JP2000279785A - Scraper for agitator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate the retainment of viscous material due to a scraping blade and to improve agitation efficiency. SOLUTION: By rotating a vessel 1 housing viscous material, the viscous material in the vessel 1 is subjected to rotary flowing so as to be agitated. The direction of rotation of the vessel 1 is reversed between the forward and backward directions to switch the rotary flowing direction of the viscous material between the forward and backward directions. By flow resistance of the viscous material associated with the switching of the rotary flowing direction of the viscous material between the forward and backward directions, the scraping blade 16 is oscillated, thereby oscillating and making variable the abutted position thereof to the inner wall surface of the vessel 1.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a stirrer for stirring a viscous substance, and more particularly to a scraper for a viscous substance attached to an inner wall surface of a container.

[0002]

2. Description of the Related Art For example, there is a stirrer for stirring a viscous substance such as ink, grease, and kneaded food in order to equalize or mix the viscosity of the viscous substance. This type of stirrer has a container for accommodating a viscous substance, and a stirrer for mixing the viscous substance in the container. This stirrer has a configuration in which a container is formed in a cylindrical shape, and a stirring blade is appropriately rotated in the container.

[0003] In this type of stirring device, the container is formed in a cylindrical shape. However, since the stirring blade is not in contact with the inner wall surface of the container, particularly in the case of a viscous substance having a high viscosity, the inside of the container is hardly used. It adheres to the wall to form a passive layer, and stirring is not sufficiently performed.

For this reason, the conventional stirring device is provided with a scraping device having scraping blades which come into contact with the inner wall surface of the container. This scraping device, while the stirring device is moving,
The scraping blade in contact with the inner wall surface of the container is relatively moved along the inner wall surface of the container. Then, the viscous substance to be attached to the inner wall surface of the container is moved into the movable range of the stirring blade to obtain an effective stirring state.

[0005]

However, in the above-described scraping device of the conventional stirring device, the rear side where the scraping blade relatively moves with respect to the inner wall surface of the container, that is, the back side portion of the scraping blade is formed. This becomes a dead space where the viscous material stays, and the above-mentioned portion becomes a portion where stirring and mixing cannot be performed.

Conventionally, in order to solve this problem, the stirring device is temporarily stopped, and the viscous material in the dead space is scraped off with a spatula or the like. However, such work requires a lot of stirring time, and it takes time to clean the viscous material attached to the spatula or the like, thereby lowering the stirring efficiency.

Accordingly, an object of the present invention is to provide a scraping device of a stirring device capable of improving the stirring efficiency by eliminating the accumulation of a viscous substance by a scraping blade in order to solve the above-mentioned problems.

[0008]

According to a first aspect of the present invention, there is provided a scraper for scraping a viscous material in a container for accommodating the viscous material so as to stir the viscous material. In a scraping device of a stirring device provided with a scraping blade that is attached to a stirring device that is made to abut and scrapes a viscous substance present on the inner wall surface of the container by contacting the inner wall surface of the container, A switching unit configured to rotate and rotate the viscous material by rotation, and to switch the direction of rotation of the viscous material forward / reverse by reversing the direction of rotation of the container; Variable means for oscillatingly varying the contact position of the scraping blade with the inner wall surface of the container with the flow resistance of the viscous material accompanying the switching.

A scraping device for a stirring device according to a second aspect of the present invention is the scraping device for a stirring device according to the first aspect, wherein the variable means includes: an internal gear disposed on the container;
A toothless gear formed so that the scraping blade is fixed and meshing rotation can be performed by a predetermined rotation of the internal gear with a flow resistance of the viscous material accompanying forward / reverse switching of a rotational flow direction of the viscous material; , Wherein the scraping blade is swung by the rotation of the toothless gear to change the contact position of the scraping blade with the inner wall surface of the container.

According to a third aspect of the present invention, there is provided a scraping device for a stirring device, comprising: a container for accommodating a viscous substance; and a scraping blade rotatably moving along the inner wall surface so as to contact the inner wall surface of the container. In the scraping device of the stirring device, a switching means for reversing the direction of rotation of the scraping blade in the forward and reverse directions and the reversal of the rotation direction of the scraping blade in the forward and reverse directions, the scraping is performed by using the resistance of the viscous material to the scraping blade. Variable means for oscillatingly varying the position of the take-off blade in contact with the inner wall surface of the container.

A scraping device for a stirring device according to a fourth aspect of the present invention is the scraping device for a stirring device according to the third aspect, wherein the variable means includes: an internal gear disposed on the container;
The scraping blade is swingably supported and swings around the scraping blade, and the scraping blade is fixed to the swing shaft, and is rotated in the normal or reverse direction of rotation of the scraping blade. A toothless gear formed so as to be able to mesh with the internal gear with a predetermined rotation with the resistance of the viscous material to the internal gear, wherein the rotation of the toothless gear causes the scraping blade to oscillate, It is characterized in that the contact position of the take-off blade with the inner wall surface of the container is variable.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a first embodiment of the present invention will be specifically described with reference to the drawings. FIG. 1 is a longitudinal sectional view showing a first embodiment of a scraping device of a stirring device according to the present invention,
FIG. 2 is a transverse sectional view of the scraping device of the first embodiment, and FIG. 3 is a transverse sectional view showing the operation of the scraping device of the first embodiment.

First, the stirring device according to the first embodiment will be described. As shown in FIGS. 1 and 2, the stirring device has a container 1 for storing a viscous substance W such as ink, grease, and kneaded food. The container 1 has a cylindrical shape and is supported by a plurality of (three in FIG. 2) rollers 2 so as to be rotatable. Container 1
Is performed by a driving means 4 for appropriately rotating the support shaft 3 fixed at the center of the outer bottom surface. The driving means 4 in the first embodiment comprises a motor 5, each pulley 6 attached to the rotating shaft 5a and the support shaft 3 of the motor 5, and a driving belt 7 stretched between the pulleys 6. Therefore, the rotation of the rotating shaft 5 a of the motor 5 is controlled by each pulley 6 and the drive belt 7.
The container 1 is transmitted to the support shaft 3 via the. When the container 1 rotates, the viscous material W contained in the container 1 rotates according to the rotation of the container 1.

The direction of rotation of the container 1 is switched between forward and reverse by switching means. The switching means switches the rotation of the rotating shaft 5a of the motor 5 in any direction by switching the supply current to the motor 5 forward or backward. Specifically, switching of the rotation direction of the container 1 can be performed by a changeover switch 8 connected to the motor 5. The operation of the changeover switch 8 may be performed manually or automatically (for example, the operation is switched after a predetermined time has elapsed by using a timer).

The driving means 4 includes a rotating shaft 5a of the motor 5 in addition to transmitting the rotation by the pulleys 6 and the driving belt 7.
A gear (not shown) that meshes with the support shaft 3 may be provided, and the rotation may be transmitted by the gear.

The stirring device has a stirrer 10. The stirrer 10 includes a stirring motor 11 and a stirring blade 12 connected to a rotation shaft 11 a of the stirring motor 11 and inserted into the center of the container 1. Therefore, the stirrer 10
Rotates the stirring blades 12 by rotating the stirring motor 11
Rotate within. When the stirring blade 12 rotates, the viscous material W stored in the container 1 is appropriately stirred. The stirring of the viscous material W is performed more effectively by the rotation of the container 1 and the rotation of the stirring blade 12. The rotation direction of the stirring blade 12 may be either the same as the rotation of the container 1 or the opposite direction.

The scraping device of the first embodiment provided in such a stirring device includes a support portion 15 and a scraping blade 16.
Consists of The support portion 15 has a swing shaft 15 a outside the container 1 and having a relationship parallel to the support shaft 3 serving as a rotation center of the container 1. In addition, the support portion 15 includes a swing shaft 15.
An arm 15b is provided so as to be swingable about a. The arm 15b is arranged such that its swinging end is desired in the container 1.

The scraping blade 16 is attached to the swinging end of the arm 15b of the support portion 15. The scraping blade 16 is a long plate-like body having a substantially wedge-shaped cross section, and the wedge-shaped tip portion 16 a
It is arranged so as to face the inner wall surface of the container 1 in the direction a. That is, as shown in FIG. 2 or FIG. 3, the scraping blade 16
6a is in two forms in contact with the inner wall surface of the container 1. Further, the swing of the arm 15b is restricted so as not to swing further in these two forms.

The operation of the first embodiment will be described. First, as shown in FIG. 2, when the container 1 rotates in the direction of arrow A in the figure, the viscous material W in the container 1 rotates in the direction of arrow A 'in the figure. In this case, the scraping blade 16 has a wedge-shaped tip portion 16a in contact with the inner wall surface of the container 1 as shown in FIG. Since the scraping blade 16 is pressed against the inner wall surface of the container 1 by the flow resistance of the viscous material W, this state is maintained as long as the container 1 is rotating in the direction of arrow A in the figure. Then, the scraping blade 16 scrapes the viscous material W attached to the inner wall surface of the container 1, and the viscous material W moves toward the center in the container 1.

Next, as shown in FIG. 3, when the rotation of the container 1 is reversed and switched in the direction of arrow B in the figure, the viscous material W in the container 1 rotates in the direction of arrow B 'in the figure. In this case, the scraping blade 16 swings due to the flow resistance of the viscous material W, and the wedge-shaped tip portion 16a contacts another position on the inner wall surface of the container 1. The scraping blade 16 moves the container 1 due to the flow resistance of the viscous material W.
This state is maintained as long as the container 1 is rotating in the direction of arrow B in the figure. Then, the scraping blade 16 scrapes the viscous material W attached to the inner wall surface of the container 1, and the viscous material W moves toward the center in the container 1.

As described above, in the first embodiment, the support 1
5, a scraping blade 1 which can be swung in the container 1.
6 constitutes a variable means for oscillating the contact position of the scraping blade 16 on the inner wall surface of the container 1 by the flow resistance of the viscous material W switched between normal and reverse by the switching means.

Therefore, the scraping device of the stirring device according to the first embodiment is similar to that of FIG.
The viscous material W stays in the portion P on the back side of the container 1, but the scraping blade 16 swings and moves so as to contact another position on the inner wall surface of the container 1 as shown in FIG. The dead space P is opened to allow the viscous material W to flow, and a good stirring state can be obtained. Also, in FIG. 3, a P ′ portion is newly formed on the back surface side of the scraping blade 16, but is returned to the state of FIG. 2 (switch).
Thereby, it is possible to appropriately perform stirring.

Hereinafter, a second embodiment of the present invention will be specifically described with reference to the drawings. 4 is a longitudinal sectional view showing a second embodiment of the scraping device of the stirring device according to the present invention, FIG. 5 is a transverse sectional view of the scraping device of the second embodiment, and FIG. 6 is a scraping device of the second embodiment. It is a cross-sectional view showing the operation of FIG.

The stirrer in the second embodiment is
Since the configuration is the same as that of the stirring device in the first embodiment described above, the same reference numerals are given and the description is omitted.

The scraping device according to the second embodiment, which is arranged in the stirring device, includes a support portion 20 and scraping blades 21. As shown in FIG. 5, the support portion 20 has a swing shaft 20 a inside the container 1 and having a relationship parallel to the support shaft 3 serving as the rotation center of the container 1. In addition, the support portion 20
An arm 20b is provided so as to be swingable about the swing shaft 20a. The arm 20b is formed such that its length (the length from the swing shaft 20a to the swing end) is longer than the radius forming the inner wall surface of the container 1.
The swinging end is arranged in the container 1 as desired.

The scraping blade 21 is attached to the swinging end of the arm 20b of the support 20. The scraping blade 21 forms a long plate-like body having a substantially wedge-shaped cross section, and the wedge-shaped tip portion 21 a
It is arranged so as to face the inner wall surface of the container 1 in a direction opposite to a. That is, as shown in FIG. 5 or FIG. 6, the scraping blade 21 has two forms in which the tip portion 21 a abuts along the inner wall surface of the container 1 as the arm 20 b swings. In addition, since the swing of the arm 20b is formed to be longer than the radius forming the inner wall surface of the container 1, the swing of the arm 20b is restricted so as not to swing further in these two forms. When the arm 20b swings as described above, the swing is hindered by the shaft 13 of the stirring blade 12 of the stirrer 10. Therefore, a relief portion 20c is formed in the middle of the arm 20b so as to avoid the shaft 13.

The operation of the second embodiment will be described. First, as shown in FIG. 5, when the container 1 rotates in the direction of arrow C in the figure, the viscous material W in the container 1 rotates in the direction of arrow C 'in the figure. In this case, the scraping blade 21 has a wedge-shaped tip portion 20a abutting on the inner wall surface of the container 1 as shown in FIG. Since the scraping blade 21 is pressed against the inner wall surface of the container 1 by the flow resistance of the viscous material W, this state is maintained as long as the container 1 is rotating in the direction of arrow C in the figure. Then, the scraping blade 21 scrapes the viscous material W attached to the inner wall surface of the container 1, and the viscous material W moves toward the center in the container 1.

Next, as shown in FIG. 6, when the rotation of the container 1 is reversed and switched in the direction of arrow D in the figure, the viscous material W in the container 1 rotates in the direction of arrow D 'in the figure. In this case, the scraping blade 21 swings due to the flow resistance of the viscous material W, and the wedge-shaped tip 21a contacts another position on the inner wall surface of the container 1. The scraping blade 21 moves the container 1 due to the flow resistance of the viscous material W.
This state is maintained as long as the container 1 is rotating in the direction of arrow D in the figure. Then, the scraping blade 21 scrapes the viscous material W attached to the inner wall surface of the container 1, and the viscous material W moves toward the center in the container 1.

As described above, in the second embodiment, the support 2
Scraping blade 2 which is made to be able to swing inside the container 1 by 0
1 is a variable means for oscillating the contact position of the scraping blade 21 on the inner wall surface of the container 1 by the flow resistance of the viscous material W switched between normal and reverse by the switching means.

Therefore, the scraping device of the stirring device in the second embodiment is similar to that of FIG.
The viscous material W stays in the portion P on the back side of the container 1. However, as shown in FIG. 6, the scraping blade 21 swings and moves so as to come into contact with another position on the inner wall surface of the container 1. The dead space P is opened to allow the viscous material W to flow, and a good stirring state can be obtained. Also, in FIG. 6, a P ′ portion is newly formed on the back surface side of the scraping blade 21, but is returned to the state of FIG. 5 (switching).
Thereby, it is possible to appropriately perform stirring.

Hereinafter, a third embodiment of the present invention will be specifically described with reference to the drawings. 7 is a longitudinal sectional view showing a third embodiment of the scraping device of the stirring device according to the present invention, FIG. 8 is a transverse sectional view of the scraping device of the third embodiment, and FIG. 9 is a scraping device of the third embodiment. It is a cross-sectional view showing the operation of FIG.

The stirring device according to the third embodiment includes:
Since the configuration is the same as that of the stirring device in the first embodiment described above, the same reference numerals are given and the description of the same portions is omitted.

In this stirring device, the container 1 is rotatable with a support shaft 3 fixed at the center of the outer bottom surface thereof, and is driven to rotate by a driving means 4. The driving means 4 in the third embodiment is composed of a motor 5, a pulley 6 attached to the rotating shaft 5a of the motor 5 and the outer peripheral surface of the container 1, and a driving belt 7 wound between the pulleys 6. Become. therefore,
The rotation of the rotating shaft 5a of the motor 5 is transmitted to the container 1 via each pulley 6 and the drive belt 7, and the container 1 rotates.
When the container 1 rotates, the viscous material W stored in the container 1 becomes
It rotates according to the rotation of the container 1.

The driving means 4 is provided with a rotating shaft 5a of the motor 5 in addition to transmitting the rotation by the pulleys 6 and the driving belt 7.
A gear (not shown) that meshes with each other may be provided on the outer peripheral surface of the container 1 and the rotation may be transmitted by the gear. Further, as the driving unit 4 in the third embodiment, the driving unit 4 in the above-described first embodiment may be used. Conversely, the driving means 4 in the third embodiment may be used as the driving means 4 in the first and second embodiments.

The scraping device according to the third embodiment provided in such a stirring device includes a scraping blade 26 and an internal gear 2.
7 and a toothless gear 28.

The scraping blade 26 is supported by the support 25. The support portion 25 is formed as desired within the container 1 from outside the container 1 regardless of the rotation of the container 1. At the end of the support portion 25, a swing shaft 25a, which is parallel to the support shaft 3 serving as the rotation center of the container 1, is rotatably supported. The swing shaft 25a is arranged in the container 1 as desired.

The scraping blade 26 is attached to the swing shaft 25a. The scraping blade 26 has a long plate-like body having a substantially wedge-shaped cross section, and has a wedge-shaped tip portion 26a.
Are arranged along the inner wall surface of the container 1. That is, the scraping blade 26 rotates with the rotation of the swing shaft 25a as shown in FIG. 8 or FIG.
Swings and comes into contact with the inner wall surface of the container 1 in two forms. In addition, since the inner wall surface of the container 1 is within the rotation radius of the tip portion 26a of the scraping blade 26, the tip portion 26a of the scraping blade 26 is prevented from swinging further in the above two forms. Be regulated.

The internal gear 27 is provided along the inner wall surface of the container 1. The internal gear 27 rotates together with the container 1 by the rotation of the container 1. Also, the internal gear 27 is
This portion is not related to the storage of the viscous material W in the container 1, and is provided on the lid 1a that closes the container 1 in the third embodiment.

The toothless gear 28 is fixed to a swing shaft 25a of the support 25. The toothless gear 28 is formed so as to be able to mesh with the internal gear 27. However, when the scraping blade 26 has its tip 26 a in contact with the inner wall surface of the container 1, the internal gear 27 is The teeth for meshing with the tooth gear 27 are missing. That is, the toothless gear 28 meshes with the internal gear 27 only when the scraping blade 26 rotates about the swing shaft 25a.

The operation of the third embodiment will be described. First, as shown in FIG. 8, when the container 1 rotates in the direction of the arrow E in the figure, the viscous material W in the container 1 rotates in the direction of the arrow E 'in the figure. In this case, the scraping blade 26 abuts on the inner wall surface of the container 1 due to the flow resistance of the viscous material W, as shown in FIG. Since the scraping blade 26 is pressed against the inner wall surface of the container 1 by the flow resistance of the viscous material W, this state is maintained as long as the container 1 is rotating in the direction of the arrow E in the figure. Then, the scraping blade 26 scrapes the viscous substance W attached to the inner wall surface of the container 1, and the viscous substance W moves toward the center in the container 1.

Next, as shown in FIG. 9, when the rotation of the container 1 is reversed and switched in the direction of arrow F in the figure, the viscous material W in the container 1 rotates in the direction of arrow F 'in the figure. In this case, FIG.
In this state, the scraping blade 26 rotates so that the tip portion 26a moves away from the inner wall surface of the container 1 due to the flow resistance of the viscous material W, and the toothless gear 28 meshes with the internal gear 27 accordingly. Then, the predetermined rotation of the internal gear 27 due to the rotation of the container 1 (the direction of arrow F in FIG. 9) rotates the scraping blade 26 together with the toothless gear 28, and the tip 26a of the scraping blade 26 in FIG. Thus, it comes into contact with another position on the inner wall surface of the container 1. In this state, as shown in FIG. 9, the toothless gear 28 and the internal gear 27 are no longer meshed with each other, and the scraping blade 26 is pressed against the inner wall surface of the container 1 by the flow resistance of the viscous material W. This state is maintained as long as the container 1 is rotating in the direction of arrow F in the figure. Then, the scraping blade 26 scrapes the viscous substance W attached to the inner wall surface of the container 1, and the viscous substance W moves toward the center in the container 1.

As described above, in the third embodiment, the scraping blade 21 which can be swung in the container 1 is separated from the internal gear 27 by the flow resistance of the viscous material W which has been switched between normal and reverse directions by the switching means. A variable means that meshes with the tooth gear 28 and oscillates the position of the scraping blade 26 in contact with the inner wall surface of the container 1 is formed.

Therefore, the scraping device of the stirring device according to the third embodiment is similar to that of FIG.
The viscous material W stays in the portion P on the back side of the container 1. However, as shown in FIG. 9, the scraping blade 26 swings and moves so as to come into contact with another position on the inner wall surface of the container 1. The dead space P is opened to allow the viscous material W to flow, and a good stirring state can be obtained. Also, in FIG. 9, a portion P ′ on the back surface side of the scraping blade 26 is newly formed, but is returned to the state of FIG. 8 (switching).
Thereby, it is possible to appropriately perform stirring.

Hereinafter, a fourth embodiment of the present invention will be specifically described with reference to the drawings. FIG. 10 is a longitudinal sectional view showing a fourth embodiment of the scraping device of the stirring device according to the present invention, and FIG.
Is a cross-sectional view of the scraping device of the fourth embodiment, and FIG. 12 is a cross-sectional view showing the operation of the scraping device of the fourth embodiment.

First, the stirring device according to the fourth embodiment will be described. The stirrer, as shown in FIGS. 10 and 11,
It comprises a container 30 and a stirrer 31. The container 30 has a cylindrical shape and is appropriately fixed, and accommodates a viscous material W such as ink, grease, or kneaded food.

The stirrer 31 drives the stirring blade 32 inserted into the container 30 by the driving means 33. Drive means 3
3 includes a motor 34, each pulley 35, a drive belt 36 stretched between the pulleys 35, an internal gear 37, and a driven gear 38.

One pulley 35 is attached to the rotating shaft 34a of the motor 34. The other pulley 35
Is mounted on a support portion 41 rotatably supported by a support shaft 39 fixed along the central axis of the container 30 above the container 30. That is, the other pulley 35 rotates together with the support portion 41 about the support shaft 39.

The internal gear 37 is provided along the inner wall surface of the container 1. The internal gear 37 is a part that is not involved in storing the viscous material W in the container 1, and is provided on the lid 1 a that closes the container 1 in the fourth embodiment.

The driven gear 38 is attached to a rotation shaft 40 rotatably supported by a support portion 41 so as to be parallel to the support shaft 39, and always meshes with the internal gear 37. The stirring blade 32 is fixed to the rotating shaft 40.

Therefore, the rotation of the rotating shaft 34 a of the motor 34 is controlled by the pulley 35
Rotates, and accordingly, the stirring blade 32 rotates in the container 30. When the stirring blade 32 rotates, the viscous material W stored in the container 30 is stirred. The rotating shaft 40 to which the stirring blade 32 is fixed is driven by a driven gear 38 attached thereto.
However, it rotates by rotating while meshing with the internal teeth 37. Accordingly, the stirring blade 32 rotates about the rotation shaft 40 to assist the stirring of the viscous material W. That is, the stirring blade 32 revolves (circulates) around the support shaft 39 in the container 30 and rotates around the rotation shaft 40.

The direction in which the stirring blade 32 rotates and the direction in which the stirring blade 32 rotates (that is, the direction in which the support portion 41 rotates) are switched between forward and reverse by switching means. The switching unit switches the rotation of the rotating shaft 34a of the motor 34 in any direction by switching the supply current to the motor 34 in the forward or reverse direction. Specifically, the rotation direction of the stirring blade 32 is switched by a changeover switch 4 connected to the motor 34.
2 can be performed. The operation of the changeover switch 42 may be performed manually or automatically (for example, the operation is switched after a predetermined time elapses by using a timer).

The driving means 33 is provided with a gear (not shown) which meshes with the rotating shaft 34a of the motor 34 and the supporting portion 41, in addition to the transmission of the rotation by the pulleys 35 and the driving belt 36. The rotation may be transmitted.

The scraping device of the fourth embodiment arranged in such a stirring device mainly comprises a scraping blade 45 and a toothless gear 46.

The scraping blade 45 is supported by the support 41. The support portion 41 includes a support shaft 39 and a rotation shaft 4.
A swing shaft 47 having a relationship parallel to 0 is rotatably supported. The scraping blade 45 is attached to the swing shaft 47. The scraping blade 45 is formed in a long plate-like body having a substantially wedge-shaped cross section, and is arranged such that the wedge-shaped tip portion 45a faces along the inner wall surface of the container 30. That is,
The scraping blade 45 rotates in accordance with the rotation of the swing shaft 47 as shown in FIG. 11 or FIG. 12, and its tip portion 45 a swings and forms two forms in which it contacts along the inner wall surface of the container 30. . Further, since the inner wall surface of the container 30 is within the radius of rotation of the tip portion 45a of the scraping blade 45, the tip portion 45a of the scraping blade 45 is prevented from swinging further in the above two forms. Be regulated.

Further, the scraping blade 45 orbits in the container 30 as the support portion 41 rotates. Thereby, the scraping blade 45 can revolve around the inner wall surface with the tip end portion 45a in contact with the inner wall surface of the container 30.

The toothless gear 46 is fixed to the swing shaft 47. The toothless gear 46 is formed so as to be able to mesh with the internal gear 37.
In each state where the tip 45 abuts the inner wall surface of the container 30, teeth for meshing with the internal gear 37 are missing. That is, the toothless gear 46 is provided with the scraping blade 45.
Only meshes with the internal gear 37 when it rotates about the pivot shaft 47.

The operation of the fourth embodiment will be described. First, as shown in FIG. 11, when the supporting portion 41 rotates in the direction of arrow G in the figure, the scraping blade 45 also rotates in the direction of G. At this time, the resistance of the scraping blade 45 due to the viscous material W in the container 30 acts in the direction of arrow G ′ in the figure. The scraping blade 45 has the resistance of the viscous material W as shown in FIG.
The wedge-shaped tip portion 45a contacts the inner wall surface of the container 30. Since the scraping blade 45 is pressed against the inner wall surface of the container 30 by the resistance of the viscous material W, this state is maintained as long as the support portion 41 rotates in the direction of arrow G in the drawing. Then, the scraping blade 45 orbits along the inner wall surface of the container 30 and scrapes the viscous substance W attached to the inner wall surface at the tip end portion 45a, and the viscous substance W moves toward the center in the container 30.

Next, as shown in FIG. 12, when the rotation of the support portion 41 is reversed and switched in the direction of arrow H in the figure, the rotation direction of the scraping blade 45 also switches in the direction of H. On this occasion,
The resistance of the scraping blade 45 due to the viscous material W in the container 30 acts in the direction H ′ in the drawing. Then, the scraping blade 45 in the state shown in FIG. 11 rotates so that the tip end portion 45a thereof separates from the inner wall surface of the container 30 due to the resistance of the viscous material W, and accordingly the toothless gear 46 meshes with the internal gear 37. I do. Then, by a predetermined rotation of the support portion 41 (the direction of arrow H in FIG. 12), the scraping blade 45 rotates together with the toothless gear 46,
As shown in FIG. 12, the tip 45a of the scraping blade 45
0 abuts other positions on the inner wall surface. In this state, FIG.
As shown in FIG. 2, the meshing between the toothless gear 46 and the internal gear 37 is lost, and the scraping blade 45 is pressed against the inner wall surface of the container 30 by the resistance of the viscous material W. This state is maintained as long as the motor rotates in the H direction. Then, the scraping blade 45 scrapes the viscous substance W adhered to the inner wall surface of the container 30, and the viscous substance W
Move toward the center.

As described above, in the fourth embodiment, the support portion 4
1, the scraper blade 45, which is made oscillating and swingable, is rotated by the resistance of the viscous material W when the oscillating direction is switched between forward and reverse by the switching means. And a variable means for swinging and varying the contact position of the scraping blade 45 with the inner wall surface of the container 30.

Therefore, the scraping device of the stirring device in the fourth embodiment is different from the scraping blade 4 in FIG.
The viscous material W stays in the portion P on the back surface side of FIG.
Since the scraping blade 45 swings and moves so as to come into contact with another position on the inner wall surface of the container 30 as shown in FIG. 2, the portion P, which was the dead space in FIG. Is generated, and a good stirring state can be obtained.
Also, in FIG. 12, a portion P ′ is newly formed on the back side of the scraping blade 45, but by returning (switching) to the state of FIG. 11, it is possible to perform stirring as appropriate.

Hereinafter, a fifth embodiment of the present invention will be specifically described with reference to the drawings. FIG. 13 is a longitudinal sectional view showing a fifth embodiment of the scraping device of the stirring device according to the present invention, and FIG.
Is a cross-sectional view of the scraping device of the fifth embodiment, and FIG. 15 is a cross-sectional view showing the operation of the scraping device of the fifth embodiment.

In the stirring device according to the fifth embodiment, the same components as those in the above-described fourth embodiment are denoted by the same reference numerals.

First, the stirring device according to the fifth embodiment will be described. The stirrer, as shown in FIGS. 13 and 14,
It comprises a container 30 and a stirrer 31. The container 30 has a cylindrical shape and is appropriately fixed, and accommodates a viscous material W such as ink, grease, or kneaded food.

The stirrer 31 drives the stirring blade 32 inserted in the container 30 by the driving means 33. Drive means 3
Reference numeral 3 denotes a motor 34, pulleys 35, a drive belt 36 stretched between the pulleys 35, a fixed gear 50, and a driven gear 51.

One pulley 35 is attached to the rotating shaft 34a of the motor 34. The other pulley 35
Is mounted on a support portion 41 rotatably supported above a container 30 with respect to a support shaft 39 fixed along the central axis of the container 30. That is, the other pulley 35 rotates together with the support portion 41 about the support shaft 39.

The fixed gear 50 is fixed to the lower end of the support shaft 39. Further, the driven gear 51 is attached to the rotating shaft 40 rotatably supported by the support portion 41 so as to be parallel to the support shaft 39, and always meshes with the fixed gear 50. The stirring blade 32 is fixed to the rotating shaft 40.

Therefore, the rotation of the rotating shaft 34 a of the motor 34 is controlled by the pulley 35 and the driving belt 36 to support the supporting portion 41.
Rotates, and accordingly, the stirring blade 32 rotates in the container 30. When the stirring blade 32 rotates, the viscous material W stored in the container 30 is stirred. The rotating shaft 40 to which the stirring blade 32 is fixed has a driven gear 51 attached thereto.
Rotates around the fixed gear 50 while meshing with the fixed gear 50 fixed to the support shaft 39. Accordingly, the stirring blade 32 rotates about the rotation shaft 40 to assist the stirring of the viscous material W. That is, the stirring blade 32
Revolves around the support shaft 39 in the container 30 (circulation)
In addition, it rotates around the rotation axis 40.

The direction in which the stirring blade 32 rotates and the direction in which the stirring blade 32 rotates (that is, the direction of rotation of the support portion 41) are switched between forward and reverse by the switching means. The switching unit switches the rotation of the rotating shaft 34a of the motor 34 in any direction by switching the supply current to the motor 34 in the forward or reverse direction. Specifically, the rotation direction of the stirring blade 32 is switched by a changeover switch 4 connected to the motor 34.
2 can be performed. The operation of the changeover switch 42 may be performed manually or automatically (for example, the operation is switched after a predetermined time elapses by using a timer).

The driving means 33 is provided with a gear (not shown) that meshes with the rotating shaft 34a of the motor 34 and the supporting portion 41, in addition to the transmission of the rotation by the pulleys 35 and the driving belt 36. The rotation may be transmitted.

The scraping device according to the fifth embodiment provided in such a stirring device has a swinging blade 52 that can swing.

The scraping blade 52 is supported by the support 41. The support portion 41 includes a support shaft 39 and a rotation shaft 4.
A swing shaft 53 having a relationship parallel to 0 is rotatably supported. The swing shaft 53 is provided with an elongated arm 54 that can swing about the swing shaft 53. The arm 54 is formed so that its length (the length from the swing shaft 53 to the swing end) is longer than the radius forming the inner wall surface of the container 30. The scraping blades 52
It is attached to the swinging end of the arm 54. The scraping blade 52 forms a long plate-like body having a substantially wedge-shaped cross section, and the wedge-shaped tip portion 52 a is in a direction opposite to the swing shaft 53 and extends along the inner wall surface of the container 30. It is arranged to face. That is, as shown in FIG. 14 or FIG.
a is in two forms in contact with the inner wall surface of the container 30. Further, since the swing of the arm 54 is formed to be longer than the radius forming the inner wall surface of the container 30, the swing is restricted so as not to swing further in these two forms.
When the arm 54 swings as described above, the swing is hindered by the rotation shaft 40 of the stirring blade 32. For this reason, a relief portion 54 a is formed in the middle of the arm 54 so as to be bent so as to avoid the rotation shaft 40.

Further, the scraping blade 52 orbits in the container 30 with the rotation of the support portion 41. Thereby, the scraping blade 52 can revolve around the inner wall surface in a state where the tip portion 52a is in contact with the inner wall surface of the container 30.

The operation of the fifth embodiment will be described. First, as shown in FIG. 14, when the support portion 41 rotates in the direction of the arrow I in the figure, the scraping blade 52 also rotates in the direction I. At this time, the resistance of the scraping blade 52 due to the viscous material W in the container 30 acts in the direction of the arrow I ′ in the drawing. The scraping blade 52 has the resistance of the viscous material W as shown in FIG.
The wedge-shaped tip 52a contacts the inner wall surface of the container 30. Since the scraping blade 52 is pressed against the inner wall surface of the container 30 by the resistance of the viscous material W, this state is maintained as long as the support portion 41 rotates in the direction of the arrow I in the drawing. Then, the scraping blade 52 orbits along the inner wall surface of the container 30 and scrapes the viscous substance W attached to the inner wall surface at the tip end portion 52a, and the viscous substance W moves toward the center in the container 30.

Next, as shown in FIG. 15, when the rotation of the support portion 41 is reversed and switched in the direction of arrow J in the figure, the rotation direction of the scraping blade 52 also switches in the J direction. On this occasion,
The resistance of the scraping blade 52 due to the viscous material W in the container 30 acts in the J ′ direction in the drawing. Then, the scraping blade 52 in the state of FIG. 14 is rotated by the resistance of the viscous material W so that the tip end portion 52a is separated from the inner wall surface of the container 30 and moves to another position on the inner wall surface of the container 30 as shown in FIG. Abut In this state, since the scraping blade 52 is pressed against the inner wall surface of the container 30 by the resistance of the viscous material W as shown in FIG. 15, as long as the container 30 is rotating in the arrow J direction in the figure,
This state is maintained. And the scraping blades 52
The viscous substance W attached to the inner wall surface of the container 30 is scraped, and the viscous substance W moves toward the center in the container 30.

As described above, in the fifth embodiment, the support portion 4
1, the scraper blade 52, which is made to circulate inside the container 30 and is swingable, is brought into contact with the inner wall surface of the container 30 by the resistance of the viscous material W when the circling direction is switched between forward and reverse by the switching means. And a variable means for oscillating variable.

Therefore, the scraping device of the stirring device in the fifth embodiment is different from the scraping blade 5 in FIG.
The viscous material W stays in the portion P on the back surface side of FIG.
As shown in FIG. 5, since the scraping blade 52 swings and moves so as to abut another position on the inner wall surface of the container 30, the portion P, which was the dead space in FIG. Is generated, and a good stirring state can be obtained.
Also, in FIG. 15, a P ′ portion is newly formed on the rear surface side of the scraping blade 52. However, by returning (switching) to the state of FIG. 14, stirring can be performed as appropriate.

[0077]

As described above, the scraping device of the stirring device according to the first aspect of the present invention is capable of reciprocating a viscous material when the rotatable container containing the viscous material is rotated forward and backward. Since the contact position of the scraping blade contacting the inner wall surface of the container is oscillated by the flow, the viscous material staying in the portion on the back side of the scraping blade flows and is appropriately stirred. Thereby, the scraping effect by the scraping blade is improved, and the stirring efficiency can be appropriately improved.

According to a second aspect of the present invention, there is provided a scraping device for a stirring device according to the first aspect, wherein an internal gear is disposed on a rotating container, and the rotational flow direction of the viscous material when the container is rotated forward and reverse. Since the scraping blade is fixed to the missing tooth gear that meshes with the internal gear for a predetermined rotation due to the flow resistance of the viscous material accompanying the forward / reverse switching, the variable operation of the contact position of the scraping blade with the inner wall surface of the container Can be performed more reliably.

According to a third aspect of the present invention, in the scraping device of the stirring device, the scraper blade rotatably moving along the inner wall surface of the container so as to scrape the viscous material on the inner wall surface of the container is swingable,
The contact position of the scraping blade with the inner wall surface of the container is oscillated by the resistance of the viscous material by reversing the direction of rotation of the scraping blade. The viscous material flows and is appropriately stirred. Thereby, the scraping effect by the scraping blade is improved, and the stirring efficiency can be appropriately improved.

According to a fourth aspect of the present invention, in the scraping device of the stirring device according to the third aspect, an internal gear is provided in the container.
Since the toothless gear that meshes with the internal gear for a predetermined rotation is fixed with the resistance of the viscous material when the rotation direction of the scraping blade is reversed in the forward and reverse directions with respect to the swing shaft that enables the scraping blade to swing, The operation of varying the position of the scraping blade in contact with the inner wall surface of the container can be performed more reliably.

[Brief description of the drawings]

FIG. 1 is a longitudinal sectional view showing a first embodiment of a scraping device of a stirring device according to the present invention.

FIG. 2 is a cross-sectional view of the scraping device according to the first embodiment.

FIG. 3 is a cross-sectional view showing the operation of the scraping device of the first embodiment.

FIG. 4 is a longitudinal sectional view showing a second embodiment of the scraping device of the stirring device according to the present invention.

FIG. 5 is a cross-sectional view of the scraping device according to the second embodiment.

FIG. 6 is a cross-sectional view showing the operation of the scraping device according to the second embodiment.

FIG. 7 is a longitudinal sectional view showing a third embodiment of the scraping device of the stirring device according to the present invention.

FIG. 8 is a cross-sectional view of the scraping device according to the third embodiment.

FIG. 9 is a cross-sectional view showing the operation of the scraping device according to the third embodiment.

FIG. 10 is a longitudinal sectional view showing a fourth embodiment of the scraping device of the stirring device according to the present invention.

FIG. 11 is a cross-sectional view of a scraping device according to a fourth embodiment.

FIG. 12 is a cross-sectional view showing the operation of the scraping device according to the fourth embodiment.

FIG. 13 is a longitudinal sectional view showing a fifth embodiment of the scraping device of the stirring device according to the present invention.

FIG. 14 is a cross-sectional view of a scraping device according to a fifth embodiment.

FIG. 15 is a cross-sectional view showing the operation of the scraping device according to the fifth embodiment.

[Explanation of symbols]

1,30: Container, 10, 31, Stirrer, 16, 21, 22
6, 45, 52: scraping blade, 27, 37: internal gear, 28, 46: toothless gear, 32: stirring blade, W: viscous material.

Continued on the front page F term (reference) 4G035 AB41 AB46 4G036 AA23 4G037 DA15 EA04 EA05 4G078 AA02 AA17 AA26 AB01 AB09 BA05 CA09 DA30 DB03

Claims (4)

[Claims] 1. A stirrer configured to rotate and flow the viscous material in a container containing the viscous material so as to stir the viscous material. The viscous material is in contact with the inner wall surface of the container and exists on the inner wall surface of the container. In a scraping device of a stirrer provided with a scraping blade for scraping an object, the container is configured to rotate and flow the viscous material by rotation of the container. Switching means for switching the rotational flow direction of the material between forward and reverse, and a contact position of the scraping blade with the inner wall surface of the container with the flow resistance of the viscous material accompanying the forward / reverse switching of the rotational flow direction of the viscous material. A scraping device for a stirrer, comprising: a variable means for performing dynamic movement. 2. The variable means comprises: an internal gear disposed in the container; and the scraper blades fixed, and the flow resistance of the viscous material is changed by forward / reverse switching of a rotational flow direction of the viscous material. A toothless gear formed so as to be able to mesh and rotate by a predetermined rotation of the internal gear, wherein the rotation of the toothless gear causes the scraping blade to oscillate, and the container in the scraping blade to rotate. The scraping device of the stirring device according to claim 1, wherein a contact position with respect to the inner wall surface is variable. 3. A scraping device of a stirrer provided with a container for accommodating a viscous material and a scraper blade rotatably moving along the inner wall surface so as to abut on the inner wall surface of the container. Switching means for reversing the direction of rotation of the scraper, and a reversal of the direction of rotation of the scraper blade so that the scraper blade contacts the inner wall surface of the container with the resistance of the viscous material to the scraper blade. A scraping device for a stirrer, comprising: a variable means for oscillating the position. 4. The variable means includes: an internal gear disposed in the container; a swing shaft for swingably supporting the scraping blade and forming a rotation of the scraping blade; A toothless gear fixed to a shaft and formed so as to be able to mesh with the internal gear for a predetermined rotation with the resistance of the viscous material to the scraping blade by reversing the rotation direction of the scraping blade in the forward and reverse directions. The stirrer according to claim 3, wherein the scraping blade is swung by the rotation of the toothless gear to change a contact position of the scraping blade with the inner wall surface of the container. Scraping device.