mixing device

Abstract

To provide a mixing device that can reduce capacity of an oscillation electric motor and mixing a raw material such as powder in a short time efficiently.SOLUTION: A mixing device includes: a rotary vessel 18 for storing a raw material such as powder; a rotary mechanism for rotating the rotary vessel 18; a rotating electric motor 13 directly connected to the rotary mechanism; an oscillation mechanism for oscillating the rotary vessel 18; and an oscillation electric motor 11 directly connected to the oscillation mechanism. The rotary vessel 18 has a substantially hollow cylindrical shape. A ratio of a length L in a longitudinal direction to a diameter D of the rotary vessel 18 is substantially 1.SELECTED DRAWING: Figure 2

Description

[Technical Field]

[0001] The present invention relates to an improvement in a mixer that stirs and mixes a plurality of types of raw materials such as powders contained in a rotary container by rotating and shaking the rotary container. [Background technology]

[0002] Conventionally, there have been known mixing devices that stir and mix a plurality of types of raw materials such as powders and granules (hereinafter referred to as "raw materials such as powders"). For example, a mixing device that includes a rocking table supported by a pair of supports erected on a base, a rocking mechanism that rocks the rocking table within a predetermined angle range like a seesaw, a rotating wheel that is attached to the rocking table and rotatably mounts a rotating container, and a rotation mechanism that rotates the rotating wheel is known.

[0003] The oscillation mechanism may be configured, for example, to include a sprocket attached to one of the support shafts of the oscillation table, an oscillation motor mounted on the base, and a reduction gear also mounted on the base for reducing the rotation of the oscillation motor to a predetermined speed and transmitting it to the sprocket.

[0004] The input side of the oscillating motor and the reduction gear are drivably connected using a belt that transmits the rotation of the motor to the reduction gear, and the output side of the reduction gear and the sprocket are drivably connected using a chain with excellent mechanical strength that transmits a large driving force at low speed from the reduction gear to the oscillating table.

[0005] The rotation mechanism may be configured, for example, with bearing members arranged at a predetermined interval in the left-right direction at the front and rear positions of the oscillating table, a pair of rotating shafts rotatably attached to the bearing members and with the rotating wheels attached to both front and rear ends thereof, a rotating motor with a reduction gear attached to the oscillating table at a predetermined position between the rotating wheels, and sprockets that are drivably connected to the rotating motor using a chain and rotate the pair of rotating shafts.

[0006] When such a mixer is used to stir and mix powdery or other raw materials, the rotating wheel is rotated by the rotating motor to rotate the rotating container on the rotating wheel, and at the same time, the direction of rotation of the swinging motor is switched at regular intervals to swing the rotating container like a seesaw, thereby stirring and mixing the powdery or other raw materials in the rotating container by using the upward movement in the circumferential direction of the rotating container and the back and forth movement in the axial direction. An example of such a mixer is the mixer described in Patent Document 1 listed below.

[0007] The mixing device described in Patent Document 1 below has a technical feature in that it is equipped with an emergency stop means that can reliably prevent the rotational drive of the reduction gear device if the belt that drivably connects the oscillating motor and the reduction gear device breaks.

[0008] This emergency stop device is configured as follows: That is, it is formed with a cam member that is fastened and fixed with a bolt or the like to the end of a pulley attached to the input side of a reduction gear device that is connected to the swing motor by a belt, a recessed portion provided at a predetermined angle range on the outer circumferential surface of the cam member, and steps that the tip of the stopper member abuts on at both left and right ends of the recessed portion in the circumferential direction.

[0009] In addition, a support bracket is fastened and fixed to one corner of the support frame of the base with bolts or the like, in close proximity to the reduction gear device, and a lever body is rotatably attached by a pivot shaft between a pair of support plates fixed to the base of the support bracket by welding or the like.

[0010] When the belt that connects the oscillating motor and the reduction gear device so that they can be driven is not broken, a roller member is constantly in contact (sliding contact) with the belt from above at the tip side of the lever body, and a certain tension is applied to the belt by the weight of the lever body.

[0011] A stopper member protrudes downward from the underside of the lever body at approximately the center of its length, and when the belt is not broken, it does not come into contact with the cam member.However, if the belt breaks during the swinging operation of the swing table, the belt that was abutting the tip side of the lever body will no longer be there, and the base end of the lever body will rotate downward under its own weight around the pivot axis.

[0012] As a result, a stopper member protruding from below the lever body enters the recessed portion of the cam member and abuts against one of the step portions formed on both the left and right ends of the recessed portion in the circumferential direction, thereby preventing the drive of the reduction gear device on the input side.

[0013] This prevents the rotating container from rotating due to the weight of the powder or other raw materials contained inside, making it possible to prevent the rotating container from colliding with the reinforcing frame or other components that make up the base, which could result in damage or breakage to the mixing device or rotating container. [Prior art documents] [Patent documents]

[0014] [Patent Document 1] Patent Publication No. 2007-144351 Summary of the Invention [Problem to be solved by the invention]

[0015] However, in the mixing device described in Patent Document 1, when the rotational motion of the oscillating motor is transmitted to the rotating container (rotating drum) at a reduced speed, the oscillating motor and the reduction gear are connected by a belt, so an emergency stop device with a complex structure as described above must be provided in case the belt breaks.

[0016] Furthermore, the swing motor and the reduction gear are connected by a belt and sprockets, and the reduction gear and the swing table are connected by a chain and sprockets, which increases the number of parts, complicates the structure, and increases costs.

[0017] Therefore, the present invention aims to provide a mixing device that eliminates the need for an emergency stop device in case the belt between the oscillating motor and the reduction gear device breaks, reduces the capacity of the oscillating motor, and can mix raw materials such as powders efficiently in a short time. [Means for solving the problem]

[0018] The mixing device according to the invention of claim 1 comprises: Powders and granules a rotating mechanism for rotating the rotating container; a rotating motor directly connected to the rotating mechanism; a rocking mechanism for rocking the rotating container; and a rocking motor directly connected to the rocking mechanism. The rotation mechanism comprises a second reduction gear directly connected to a rotary motor, a rotating shaft of the second reduction gear, a coupling connected to the rotating shaft of the second reduction gear, a first rotating shaft connected to the coupling, and a rotating wheel connected to the first rotating shaft; the swing mechanism comprises a first reduction gear directly connected to the swing motor, a swing shaft connected to the first reduction gear, a swing table that swings by rotation of the swing shaft, and a support fitting and a swing wheel that swing together with the swing table; and the rotating vessel has a substantially hollow cylindrical shape, and is configured so that the ratio (L / D) of the longitudinal length L to the diameter D of the rotating vessel satisfies the condition of 0.7≦(L / D)≦1.3. It is characterized by the following.

[0020] Claim 2 The mixing device according to the invention described The method of claim 1 The rotary container has a hollow cylindrical body with a bottom and a narrowed portion connected to one end of the body, The lengthwise dimension (1 / L) of the narrowed portion is configured to satisfy the condition 0.1≦(1 / L)≦0.4. It is characterized by the following.

[0021] Claim 3 The mixing device according to the invention described in claim 1 or claim 2 The rotating container according to any one of the above items, Powder and granular materials It is characterized by having an opening that can be used for both input and output.

[0022] Claim 4 The mixing device according to the invention described above comprises the following: 3 The rotary container according to any one of the above is provided with a presser wheel for pressing down the rotary container from above. [Effects of the Invention]

[0023] According to the invention described in claim 1, parts such as chains and sprockets that connect the rotating motor and the rotating mechanism are not required, which reduces the number of parts, reduces assembly labor, lightens the weight, and reduces the cost of the device.

[0024] Furthermore, according to the invention described in claim 1, a belt connecting the swing motor and the swing mechanism is not required, so accidents such as the belt breaking can be avoided, and emergency stop means to prepare for accidents can be eliminated.

[0025] Claim 1 According to the described invention, the rocking load on the rotary vessel can be reduced, so the capacity of the rocking motor can be reduced, which contributes to the miniaturization of the entire device.

[0026] Claim 2 According to the described invention, it is possible to reduce the dead zone where raw materials such as powders are difficult to mix.

[0027] Claim 3 The described invention can contribute to the simplification and miniaturization of the device.

[0028] Claim 4 According to the described invention, the rotating container can be prevented from falling off. [Brief explanation of the drawings]

[0029] [Figure 1] FIG. 1 is a front view showing a mixing device of the present invention. [Figure 2] FIG. 1 is a side view showing a mixing device of the present invention. [Figure 3] FIG. 1 is a plan view showing a mixing device of the present invention. [Figure 4] 1 is a front view showing a state in which raw materials such as powder are charged into a rotary container constituting the mixing device of the present invention. FIG. [Figure 5] 1 is a front view showing a state in which raw materials such as powder are discharged to the outside from a rotary container constituting the mixing device of the present invention. FIG. DETAILED DESCRIPTION OF THE INVENTION

[0030] Hereinafter, the best mode for carrying out the present invention will be described with reference to Figures 1 to 5. Figure 1 is a front view showing a mixing apparatus A of the present invention, Figure 2 is a side view of the mixing apparatus A, and Figure 3 is a plan view of the mixing apparatus A. In Figures 1 to 3, reference numeral 1 denotes the base of the mixing apparatus A, which is composed of a pair of base portions 1a each having a substantially rectangular parallelepiped shape and an upright portion 1b attached to the top of each base portion 1a and having a substantially downward U-shape in side view.

[0031] Reference numeral 2 denotes connecting fittings that connect the bases 1a together, and as shown in FIG. 3, they are arranged and fixed at predetermined intervals in the longitudinal direction of the bases 1a (the vertical direction in FIG. 3).

[0032] Reference numeral 3 denotes a support base that is placed on the outside (right side of FIG. 1) of the base 1a that is placed on the right side of FIG. 1, and as shown in FIG. 3, it is composed of a foot 3a that is roughly U-shaped facing left in a plan view and that extends laterally (right side of FIG. 3) from the center position in the longitudinal direction (vertical direction of FIG. 3) of the base 1a, and a pair of support parts 3b (see FIG. 2) that are fixed in a position that straddles the base 1a of the base 1 and the upper part of the foot part 3a, as shown in FIGS. 1 and 2.

[0033] The pair of support portions 3b are composed of a back portion 3b1 arranged parallel to the front side of the upright portion 1b of the base 1 shown in Figure 2, an upper surface portion 3b2 connected to the top of the back portion 3b1 in a direction perpendicular to the back portion 3b1 (toward the front side of the paper in Figure 2), and a side portion 3b3 fixed perpendicular to both the back portion 3b1 and the upper surface portion 3b2 and toward the front side of the paper in Figure 2.

[0034] When the support portion 3b is viewed from the front side as shown in Figure 1, the side portion 3b3 of the support portion 3b has a downward U-shape, and a reinforcing portion 3c that connects the pair of left and right support portions 3b shown in Figure 2 is attached at a height position approximately 1 / 4 from the bottom in the longitudinal direction (the vertical direction in Figure 1).

[0035] 1 and 3, reference numeral 4 denotes a swing shaft that is rotatably supported by a pair of bearings 5 ​​attached to the center of the upper part of the standing part 1b of the base 1, and reference numeral 6 denotes a swing table fixed to the end of the swing shaft 4. As shown in FIG. 3, the swing table 6 is composed of a bottom frame 6a formed by framing a plurality of steel members into a rectangular shape in a plan view, and side frames 6b formed by combining a plurality of steel members, some of which are not shown, that are erected on the steel members on both sides of the bottom frame 6a (left and right positions in FIG. 3) as shown in FIGS. 1 and 2.

[0036] Reference numeral 7 denotes a pair of clamping parts fixed to a pair of upper surface parts 3b2 constituting the support base 3 by a first fixing member 8 consisting of a bolt 8a and a nut 8b, and is L-shaped when viewed from the side as shown in Figure 2, and is composed of a bottom surface part 7a and a vertical part 7b.

[0037] The pair of clamping portions 7 are fixed at their bottom surfaces 7a to a pair of upper surfaces 3b2 constituting the support base 3 by a first fixing member 8, so that they stand upright on the support base 3, forming a predetermined space, and a first reduction gear 9 is fixed in this space by a second fixing member 10.

[0038] Reference numeral 11 denotes an oscillation motor that outputs rotation to the first reduction gear device 9, and is fixed to the lower part of the first reduction gear device 9. The first reduction gear device 9 reduces the rotation of the oscillation motor 11 and outputs it, and the various gears that make up the first reduction gear device 9 change the rotation output direction from the upward direction shown in FIG. 1 to the leftward direction before outputting the rotation. The rotation output of the first reduction gear device 9 is output as rotation of the oscillation shaft 4, which serves as the rotation axis of the reduction gear device 9.

[0039] Reference numeral 12 shown in Figure 2 is a fixed base attached to the underside of the bottom frame 6a of the oscillating table 6, and as shown in Figure 3, it is made up of multiple steel members that are framed in a rectangular shape when viewed from the top, and extends in the opposite direction (to the right in Figure 2) from the mounting position of the support base 3 when viewed from the side as shown in Figure 2.

[0040] Reference numeral 13 denotes a rotary motor installed on the fixed base 12, and is fixed to, for example, a second reduction gear 14 (see FIG. 3) that reduces the rotational output of the rotary motor and outputs it. The second reduction gear 14 converts the direction of the rotational output of the rotary motor 13 from the leftward direction shown in FIG. 3 to a downward direction and outputs it.

[0041] Reference numeral 15 shown in Figures 2 and 3 denotes a coupling for transmitting the rotation of the output shaft (not shown) of the second reduction gear device 14 to the first rotating shaft 16a shown in Figure 1, which is rotatably supported on a bearing (not shown) fixed on the bottom frame 6a of the oscillating table 6, and reference numeral 17a denotes a rotating wheel attached to the first rotating shaft 16a and rotating together with the first rotating shaft 16a.

[0042] Reference numeral 16b shown in Figures 1 and 2 denotes a second rotating shaft that is rotatably supported on a bearing (not shown) fixed on the bottom frame 6a of the rocking table 6, and reference numeral 17b denotes a rotating wheel that is attached to the second rotating shaft 16b and rotates together with the second rotating shaft 16b.

[0043] Reference numeral 18 denotes a rotating container that is placed on two rotating wheels, a first rotating wheel 17a and a second rotating wheel 17b, and rotates on the rotating wheels 17a and 17b as the rotating wheel 17a rotates. The rotating container 18 is roughly composed of a hollow cylindrical body portion 18a, a roughly bowl-shaped narrowed portion 18b, and an outlet portion 18c that extends from the narrowed portion 18b in the shape of a hollow circular short cylinder.

[0044] The rotating vessel 18 is designed so that the ratio (L / D) of the diameter D of the body 18a to the length L from the right end of the body 18a to the left end of the narrowed portion 18b shown in Figure 2 is approximately 1.

[0045] Reference numeral 19 denotes a screw receiving portion fixed to the outer peripheral surface of the outlet portion 18c, and 20 denotes a conical portion formed in a substantially conical shape and provided with a substantially hollow disk-shaped mounting base 20a on the outlet portion 18c side. Reference numeral 21 denotes a mounting member for fixing the conical portion 20 to the rotary vessel 18 by screwing the mounting base 20a into the screw receiving portion 19 with the mounting base 20a abutting the outlet portion 18c.

[0046] Reference numeral 22 denotes a lid portion that closes the end opening of the conical portion 20, and is fixed to the conical portion 20 using a fastening portion 23 that is made up of a fastening ring 22a and a fastening screw 22b shown in FIG.

[0047] Reference numeral 24 denotes a pair of locking projections arranged along the circumferential surface of the body 18a of the rotary container 18, with a fixed distance maintained between the two locking projections 24. Reference numeral 25 shown in Figs. 1 and 3 denotes a swinging wheel arranged between the pair of locking projections 24, with the outer diameter of the swinging wheel 24 being smaller than the distance between the pair of locking projections 24. The swinging wheel 24 is rotatably attached via support fittings 26 to the inside of the upper part of a pair of side frames 6b of the base 1 shown in Fig. 1.

[0048] Reference numeral 27 denotes a pressure member that is attached to each of a pair of side frames 6b of the base 1 and has multiple bent portions, so that it is positioned along the periphery of the circumferential portion of the rotary container 18, and reference numeral 28 denotes a pressure wheel that is rotatably attached to the inside of the pressure member 27 by means of a mounting bracket 29.

[0049] In the present invention, the oscillating mechanism refers to the first reduction gear 9 directly connected to the oscillating motor 11, the oscillating shaft 4, the oscillating table 6, the support bracket 26, and the oscillating wheel 25, and the rotating mechanism refers to the second reduction gear 14 directly connected to the rotating motor 13, the rotating shaft (not shown), the coupling 15, the first rotating shaft 16a, and the rotating wheel 17a.

[0050] Next, the operation of the above-mentioned mixing device A will be explained with reference to Figures 4 and 5. When raw materials such as powder are charged into the rotary container 18, the conical portion 20 together with the lid portion 22 is removed from the outlet portion 18c by operating the attachment member 21 shown in Figure 2, thereby exposing the opening of the outlet portion 18c.

[0051] In this state, as shown in Fig. 4, the oscillation motor 11 is started and the rotation output in one direction is transmitted to the first reduction gear 9. The reduction gear 9 reduces the speed of the rotation of the oscillation motor 11 and converts the output direction from upward as shown in Fig. 1 to leftward, and outputs the rotation as the oscillation shaft 4.

[0052] The oscillating shaft 4 is pivotally supported by bearings 5 ​​installed on a pair of upright portions 1b, and its ends are fixed to the side frames 6b of the oscillating table 6, so that the rotational output of the oscillating shaft 4 rotates the oscillating table 6.

[0053] A first rotating shaft 16a and a second rotating shaft 16b are pivotally supported by bearings (not shown) on the bottom frame 6a of the oscillating table 6, and rotating wheels 17a and 17b are attached to the rotating shafts 16a and 16b, respectively, so that they rotate together. A rotating container 18 is placed on the rotating wheels 17a and 17b, and as the oscillating table 6 rotates, the rotating container 18 rotates in a direction such that the opening of the outlet 18c faces upward, as shown in FIG.

[0054] The rotation of the rotary container 18 is monitored by an angle detection means such as a rotary encoder connected to one of the oscillating shafts 4 via a gear, and when it detects that the rotary container 18 has rotated to a desired angle, the oscillating motor 11 is temporarily stopped.

[0055] When the rotating container 18 has rotated to an arbitrary angle, the upper part of the rotating container 18 comes into contact with the pressure wheel 28 attached to the pressure member 27 shown in FIG. 1 via the mounting bracket 29, and the rotating container 18 is clamped between the rotating wheels 17a and 17b arranged below, so that the rotating container 18 will not slide off the rocking table 6 even when the rotating container 18 is tilted.

[0056] As shown in Fig. 4, when the outlet 18c of the rotary vessel 18 faces upward, raw materials such as powder are poured into the rotary vessel 18 through the opening of the outlet 18c. After the powder or other raw materials have been poured into the rotary vessel 18, the conical portion 20 with the lid 22 attached is attached to the rotary vessel 18 by screwing the attachment member 21 into the screw receiving portion 19 with the attachment base 20a of the conical portion 20 shown in Fig. 2 abutting against the outlet 18c of the rotary vessel 18 shown in Fig. 4.

[0057] Once the opening of outlet portion 18c is closed by cone portion 18c and lid portion 22, oscillation motor 11 is started again to output rotation in the opposite direction to that described above. The rotation of oscillation motor 11 is transmitted to reduction gear device 9, where it is slowed down and then transmitted to oscillation table 6 via oscillation shaft 4. As a result, rotating wheels 17a, 17b fixed to rotating shafts 16a, 16b pivoted on bearings (not shown) on oscillation table 6 rotate, and rotating container 18 on rotating wheels 17a, 17b rotates in the direction opposite to the direction shown in FIG. 4 (the direction in which the opening of outlet portion 18c faces downward).

[0058] The rotation of the rotary container 18 is detected by an angle detection means (not shown), similar to the rotation of the rotary container 18 in the preceding stage when the raw materials such as powder are added as described above. When the angle detection means detects that the rotary container 18 has tilted, for example, 20° counterclockwise from the horizontal state shown in FIG. 2, the swing motor 11 switches the direction of its rotation output.

[0059] Thereafter, when the angle detection means detects that the rotary vessel 18 has tilted, for example, 20° clockwise from the horizontal state shown in Fig. 2, the swing motor 11 again switches its rotation output direction. By repeating the above operation, the rotary vessel 18 swings like a seesaw in an angular range of 20° clockwise and counterclockwise from the horizontal state shown in Fig. 2.

[0060] 2 and 3 is started, the rotation output of the rotation motor 13 is transmitted to the second reduction gear 14. The reduction gear 14 reduces the speed of the rotation of the rotation motor 13 and converts the output direction from the leftward direction shown in FIG. 3 to a downward direction, and outputs the rotation output.

[0061] The output of the reduction gear 14 is transmitted to the first rotating shaft 16a via the coupling 15, causing a rotating wheel 17a fixed to the rotating shaft 16a to rotate. Here, the rotating container 18 is mounted on the rotating wheel 17a and a rotating wheel 17b fixed to a second rotating shaft 16b arranged parallel to the first rotating shaft 16a, so that as the rotating wheel 17a rotates, the rotating container 18 rotates in a fixed direction on the rotating wheels 17a and 17b.

[0062] A pressure wheel 28 shown in Figure 1 is arranged near the outer periphery of the rotating container 18. When the pressure wheel 28 is in contact with the rotating container 18, the pressure wheel 28 rotates in conjunction with the rotation of the rotating container 18, assisting the rotation of the rotating container 28 and pressing down on the rotating container 18 from above to stabilize it.

[0063] In this way, while rotating by the rotating motor 11, the rotating vessel 18 is repeatedly oscillated within a predetermined angular range by the oscillating motor 7. As a result, the raw materials such as powder charged into the rotating vessel 18 are stirred up in the circumferential direction of the rotating vessel 18 by the rotation of the rotating vessel 18, and are moved back and forth along its axial direction (the left-right direction in FIG. 2) by the oscillating action, thereby allowing the raw materials to be stirred and mixed well and reliably.

[0064] In this case, in the mixer A of the present invention, the ratio (L / D) of the diameter D of the body 18a of the rotating vessel 18 to the length L from the right end of the body 18a to the left end of the narrowed portion 18b shown in FIG. 2 is about 1. Therefore, the time required for the powder or other raw material in the rotating vessel 18 to move in the axial direction of the rotating vessel 18 (the left-right direction in FIG. 2) can be shortened, and the stirring and mixing time can be shortened.

[0065] Furthermore, when the rotating container is rotated and swung, the powdered raw materials inside the rotating container generally become difficult to agitate and mix in the conical portion of the rotating container that moves downward as the container sways, but in the mixer A of the present invention, the conical portion 18c is provided only on one side of the body portion 18a (the left side in FIG. 2) and the dimension 1 in the longitudinal direction (the left-right direction in FIG. 2) of the conical portion 18c is shortened, thereby minimizing the dead zone where agitation and mixing of the powdered raw materials is poor. As a result, the powdered raw materials inside the rotating container 18 can be reliably agitated and mixed.

[0066] Furthermore, by setting the ratio (L / D) to approximately 1, the rocking load on the rotary vessel 18 can be reduced compared to when the ratio is greater than 1, and the capacity required for the rocking motor 11 can be reduced.

[0067] A ratio (L / D) of approximately 1 preferably satisfies 0.8≦(L / D)≦1.2, and shortening the dimension l in the longitudinal direction (the left-right direction in FIG. 2) of the conical portion 18c preferably satisfies 0.1≦(l / L)≦0.3, but is not limited to these. For example, 0.7≦(L / D)≦1.3 is also acceptable, or even if (l / L)≦0.4, the effects expected from the present invention can be obtained.

[0068] Furthermore, as the rotating vessel 18 oscillates, it slides slightly downward on the rotating wheels 17a, 17b. However, a pair of locking projections 24 is attached to the outer circumferential surface of the rotating vessel 18, and a rocking wheel 25 having an outer diameter smaller than the distance between the locking projections 24 is disposed between the pair of locking projections 24. Therefore, when the rotating vessel 18 slides downward, the rocking wheel 25 comes into contact with the locking projection 24 located on the upper side and rotates together with the rotation of the rotating vessel 18, thereby assisting the rotation of the rotating vessel 18 and reliably preventing the rotating vessel 18 from sliding further downward on the rotating wheels 17a, 17b and slipping off the rocking table 6.

[0069] As described above, the powdered raw materials in the rotary container 18 are stirred and mixed, and after a preset time has elapsed, the rotating motor 11 is stopped, and the swinging motor 7 is also stopped when the angle detection means detects that it has reached the horizontal position shown in Figure 2, thereby completing the stirring and mixing of the powdered raw materials.

[0070] When the swinging motor 7 is stopped, a braking force from a braking device (not shown) provided on the motor 7 acts on the motor 7 itself, preventing the rotating vessel 18 from rotating clockwise or counterclockwise due to positional deviation of the powder or other raw material inside the rotating vessel 18.

[0071] When the stirred and mixed powder or other raw materials are to be discharged from the rotary vessel 18, the clamping screw 23b of the clamping member 23 shown in FIG. 3 is operated to loosen the clamping ring 23a, thereby removing the lid portion 22 from the conical portion 20 shown in FIG. 2.

[0072] Next, using the fastening member 23, a substantially hollow cylindrical discharge adapter 30 shown in Fig. 5 is attached in place of the lid portion 22. After the discharge adapter 30 is attached, the swing motor 11 is started, and the rotary container 18 on the rotating wheels 17a, 17b attached to the swing table 6 is rotated via the reduction gear device 9 and the swing shaft 4 so that the side of the discharge adapter 30 faces downward, as shown in Fig. 5.

[0073] The rotation of the rotary vessel 18 is detected by the angle detection means described above, and when it is detected that the rotary vessel 18 has rotated to a desired angle, the swing motor 11 stops operating.

[0074] When the rotating container 18 rotates so that the discharge adapter 30 faces downward, the powder or other raw material inside the rotating container 18 is discharged to the outside through the opening of the discharge adapter 30. The tilt angle of the rotating container 18 can be rotated up to a maximum of 40°, which makes it possible to reliably discharge the powder or other raw material outside without leaving any residue inside the rotating container 18.

[0075] When the rotating container 18 has rotated up to 40°, the rotating container 18 comes into contact with the pressure wheel 28 shown in FIG. 1 and is securely clamped between the pressure wheel 28 and the rotating wheels 17a and 17b. In addition, the oscillating wheel 25 between a pair of locking protrusions 24 provided on the outer periphery of the rotating container 18 abuts against one of the locking protrusions 24 that has moved upward, so the rotating container 18 will not fall off.

[0076] It should be noted that the swing angle of the rotary container 18 and the maximum tilt angle of the rotary container 18 when discharging raw materials such as powder are merely examples, and it goes without saying that the present invention will be effective even if a different angle is set.

[0077] As explained above, in the mixing device A of the present invention, the oscillation motor 7 and the first reduction gear 9 are not connected by a belt, so there is no room for a failure such as a belt breakage, and there is no need to provide an emergency stop mechanism to prepare for a breakage failure, so the device can be constructed inexpensively.

[0078] Furthermore, since the rotating motor 11 and the second reduction gear 14, and the first reduction gear 9 and the oscillating table 6 are not connected by chains or sprockets, the number of parts can be reduced, which reduces the assembly labor, simplifies the structure, reduces weight, and makes the device more compact.

[0079] Furthermore, by setting the ratio (L / D) of the diameter D of the body 18a of the rotating vessel 18 to the length L from the end of the body 18a to the end of the narrowed portion 18b to be approximately 1, the time it takes for the powder or other raw material inside the rotating vessel 18 to move in the length L direction can be shortened, and the stirring and mixing time can be shortened.

[0080] Furthermore, the mixing device A of the present invention is configured to minimize the length of the narrowed portion 18c and not have a conical portion on the other side of the body portion 18a, thereby making it possible to reduce the so-called dead zone, where the stirring and mixing of raw materials such as powders becomes sluggish.

[0081] Furthermore, by setting the ratio (L / D) to approximately 1, the rocking load on the rotary vessel 18 can be reduced, the capacity required for the rocking motor 7 can be reduced, and the mixer can be made smaller. [Industrial Applicability]

[0082] The present invention is applicable to mixers. [Explanation of symbols]

[0083] 1 base 1a base 1b Standing section 2 Connecting fittings 3 Support stand 3a Foot 3b Support part 3b1 Back part 3b2 Top part 3b3 Side part 3c Reinforcement part 4 Oscillating shaft 5. Bearings 6. Rocking table 6a Bottom frame 6b Side frame 7 Clamping part 7a Bottom part 7b Vertical section 8 First fixing member 8a bolt 8b Nut 9 First reduction gear 10 Second fixing member 11 Oscillating motor 12 Fixed base 13 Rotating motor 14 Second reduction gear 15 Coupling 16a First rotation axis 16b Second rotation axis 17a, 17b Rotating wheels 18 Rotating Container 18a Torso 18b Narrow part 18c Exit part 19 Screw receiving part 20 Cone section 20a Mounting base 21 Mounting material 22 Lid 23 Fastening part 23a Fastening ring 23b Clamping screw 24 Locking protrusion 25 Oscillating Wheel 26 Support bracket 27 Pressing member 28 Presser wheel 29 Mounting bracket 30 Discharge adapter A Mixing device

Claims

1. A rotating container for containing powder or granular material, a rotating mechanism for rotating the rotating container, a rotating motor directly connected to the rotating mechanism, a swinging mechanism for swinging the rotating container, and a swinging motor directly connected to the swinging mechanism, wherein the rotating mechanism comprises a second reduction gear directly connected to the rotating motor, a rotating shaft of the second reduction gear, a coupling connected to the rotating shaft of the second reduction gear, a first rotating shaft connected to the coupling, and a coupling connected to the first rotating shaft. a rotating wheel, the rocking mechanism comprising a first reduction gear directly connected to the rocking motor, a rocking shaft connected to the first reduction gear, a rocking table that rocks by rotation of the rocking shaft, and a support bracket and rocking wheel that rock together with the rocking table, and the rotating container is substantially hollow cylindrical and is configured so that the ratio (L / D) of the longitudinal length L of the rotating container to the diameter D of the rotating container satisfies the condition 0.7≦(L / D)≦1.

3.

2. The rotating container is a mixing device as described in claim 1, characterized in that it has a hollow, bottomed, cylindrical body and a narrowed portion connected to one end of the body, and is configured so that the longitudinal dimension (1 / L) of the narrowed portion satisfies the condition 0.1≦(1 / L)≦0.

4.

3. 3. The mixing device according to claim 1, wherein the rotary container is provided with an opening for both feeding and discharging powder or granules.

4. 4. The mixing device according to claim 1, wherein the rotary container is provided with a presser wheel for pressing the rotary container from above.

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