JP4649246B2 - Powder supply device - Google Patents

Description

  The present invention relates to a powder supply apparatus capable of supplying powder stably and continuously.

  For example, a conventional powder supply apparatus mainly uses a feeder having screw blades to convey powder.

  However, in the conventional powder supply apparatus including the feeder having the screw blades described above, there is a possibility that the blades accumulate and accumulate over time according to, for example, the powder transport environment humidity.

  In particular, an object of the present invention is to provide a powder supply device capable of supplying powder continuously and stably.

  The powder supply apparatus of the present invention has the following characteristics.

  (1) Eccentricity having a cylindrical body into which powder can be introduced, and a bottom part comprising an inclined surface placed in a non-contact state with the lower end part of the cylindrical body and inclined downward from the central part toward the outer peripheral part. And an eccentric drive means for driving the eccentric body eccentrically with respect to a central axis thereof, wherein the eccentric drive means is at least formed along the outer periphery of the eccentric body on which the eccentric body is placed. An eccentric plate in which one or more powder outlets are formed, drive shafts respectively provided at both ends of the eccentric plate, an eccentric rotatable body connected to the other end of the drive shaft, and And an eccentric driving source connected to at least one of the rotating bodies.

  With the above apparatus configuration, the powder unraveled at the inclined bottom of the eccentric body that is eccentric can be continuously discharged from the powder outlet.

  (2) In the powder supply apparatus according to (1), the eccentric driving unit further includes a pair of sandwiching bodies that sandwich both ends of the eccentric plate so as to be movable eccentrically from the thickness direction of the eccentric plate, respectively. Have.

  While the both ends of the eccentric plate are clamped by a pair of clamps, the eccentric plate can be decentered without being displaced in the waterside direction. Thereby, since the eccentric body mounted on the eccentric body is also eccentric without moving in the horizontal direction, the powder can be guided to the powder outlet of the eccentric plate while efficiently solving the powder.

  (3) In the powder supply apparatus according to the above (1) or (2), at least one of the pair of sandwiching bodies includes a spherical body that can rotate 360 ° and a biasing force that rotatably rotates the spherical body. Force means.

  When the eccentric plate is decentered by the eccentric drive while the 360 ° rotatable spherical body reduces the friction with the eccentric plate, the biasing means prevents the two ends of the eccentric body from shaking in the vertical direction. it can. Thereby, the eccentric plate can be decentered while being stabilized in the horizontal direction. As a result, the eccentricity of the eccentric body is also stabilized in the horizontal direction, and the powder supply efficiency is improved.

  (4) In the powder supply apparatus according to any one of (1) to (3) above, a funnel-like powder that is fixed to an eccentric plate and guides the powder flowing out from the powder outlet to the lower side It has a body supply tube.

  With the funnel-shaped powder supply pipe fixed to the eccentric plate, the pulverized powder can be reliably supplied to the powder supply destination.

  (5) It has a cylindrical body into which powder can be introduced, and a bottom part which is placed in a non-contact state with the lower end part of the cylindrical body and is inclined downward from the center part toward the outer peripheral part. An eccentric body, and an eccentric driving means for driving the eccentric body with respect to a central axis thereof. The eccentric driving means mounts the eccentric body and is formed along an outer periphery of the eccentric body. Further, an eccentric plate in which at least one powder outlet is formed, a drive shaft provided at each end of the eccentric plate, and an eccentrically rotatable rotor connected to the other end of the drive shaft, respectively A powder supply apparatus comprising: an eccentric drive source connected to at least one of the rotating bodies; and a synchronization unit that synchronizes the rotations of both rotating bodies.

  Since both the rotating bodies can be more accurately synchronized and rotated by the synchronizing means, the eccentric body can be decentered stably. Thereby, the powder unraveled at the inclined bottom portion of the eccentric body can be continuously and smoothly discharged from the powder outlet.

  (6) In the powder supply apparatus according to (5), the synchronization unit includes a synchronous rotating shaft that connects the rotating member and the eccentric drive source, respectively, and a synchronous rotating member that is coupled to the two synchronous rotating shafts. And a belt-like body that synchronizes the rotation of the synchronous rotating bodies.

  By providing a synchronous rotating body on each of the synchronous rotating shafts and linking a belt-like body between the two synchronous rotating bodies, the rotations of both rotating bodies for decentering the eccentric plate can be synchronized. Thereby, eccentricity of an eccentric board can be performed stably.

  (7) In the powder supply apparatus according to the above (5) or (6), the synchronization means is further provided between the two synchronous rotators, and is a synchronous auxiliary rotator that can be rotated by movement of the belt-like member. Have

  By having a synchronous auxiliary | assistant rotary body, rotation of both synchronous rotary bodies can be synchronized more.

  According to the present invention, the powder can be continuously and stably supplied while being unwound.

  Hereinafter, the best embodiment of the present invention will be described with reference to the drawings.

Embodiment 1 FIG.
The structure of an example of the powder supply apparatus according to the present invention will be described below with reference to FIGS.

  The powder supply apparatus 100 includes a cylindrical body 10 into which the powder 30 can be introduced, a support bar 16 fixed to one end of the cylindrical body 10 and the other end fixed to the wall 60, and a lower end of the cylindrical body 10. The eccentric body 14 is mounted in a non-contact state and has a bottom portion 26 formed of an inclined surface inclined downward from the center portion toward the outer peripheral portion, and the eccentric drive for driving the eccentric body 14 eccentrically with respect to the central axis. Means.

  The eccentric drive means of the present embodiment includes an eccentric plate 40 on which the eccentric body 14 is placed and at least one powder outlet 42 formed along the outer periphery of the eccentric body 14 is formed. Eccentric drive sources provided at opposite ends of the eccentric plate 40, and clamping members that hold the both ends of the eccentric plate 40 so as to be movable eccentrically from the thickness direction of the eccentric plate 40, respectively.

  Then, fixed shafts 46a and 46b as drive shafts are provided at both ends of the eccentric plate 40, and the eccentric drive sources are provided at both ends of the eccentric plate 40 as shown in FIGS. The eccentric drive source at one end includes a rotating body 48a that can be eccentrically connected to a circumferential end of a fixed shaft 46a fixed to one end of the eccentric plate 40, and a rotation that is connected to the center of the rotating body 48a. The shaft 50a includes a motor 52 that is a rotation source that rotationally drives the rotating shaft 50a, and a support bar 18a that has one end fixed to the motor 52 and the other end fixed to the wall 60. The eccentric drive source at the other end is connected to a rotating body 48b that can be eccentrically connected to a circumferential end of a fixed shaft 46b fixed to the other end of the eccentric plate 40, and to the center of the rotating body 48b. The rotary shaft 50b and a support bar 18b that rotatably supports the rotary shaft 50b. In this embodiment, the motor that rotates the rotating body is configured to rotate one rotating body. However, if the rotating shafts 50a and 50b can be eccentrically synchronized with each other, both rotating bodies are respectively motors. You may rotate by.

  Further, the sandwiching body is preferably a rotational sandwiching body, and as shown in FIGS. 1 and 2, the rotational sandwiching body is also provided at at least both ends of the eccentric plate 40, and the rotational sandwiching body at one end is eccentric. The spherical bodies 20a and 20b that can be rotated in any direction of 360 ° sandwiched in the thickness direction of the plate 40, the storage boxes 22a and 22b on which the spherical bodies 20a and 20b are rotatably mounted, and the storage boxes 22a and 22b, respectively. The other ends of the support shafts 56a and 56b are fixed to the wall 60 of the powder supply device. In addition, the other end of the rotary sandwiching body includes spherical bodies 20c and 20d that can be rotated in any direction of 360 ° sandwiched in the thickness direction of the eccentric plate 40, and a housing for rotatably mounting the spherical bodies 20c and 20d. The boxes 22c and 22d and the support shafts 56c and 56d that support the storage boxes 22c and 22d are formed, and the other ends of the support shafts 56c and 56d are fixed to the wall 60 of the powder supply device. In FIG. 1 and FIG. 2, a pair of the rotary sandwiching bodies are arranged at both ends of the eccentric plate 40, respectively. More preferably, a pair of rotary sandwiching bodies are arranged on at least three sides of the four sides of the eccentric plate 40. If provided, the eccentric plates 40 can be more stably eccentric without shaking in the vertical direction, and more preferably, a configuration in which a pair of rotating clamps are arranged on each of the four sides of the eccentric plate 40 is desirable.

  The spherical bodies 20a, 20b, 20c, and 20d preferably have a shape with a small friction coefficient and rigidity and a small contact area with the eccentric plate 40. For example, a rigid rubber ball may be used.

  The said rotation clamping body is demonstrated still in detail using FIG. 3 and 4 show the structures of the storage boxes 22a and 22b respectively supported by the support shafts 56a and 56b of the rotary clamping body shown in FIG. As shown in FIG. 3, the storage box 22b is formed with a concave spherical surface capable of rotating the spherical body 20b, and the spherical body 22b is placed on the spherical surface. On the other hand, as shown in FIG. 4, the storage box 22a is provided with a cylindrical hollow part, and an elastic body, for example, a spring 24a is fixed to the storage box 22a as an urging means in the hollow part. Yes. The spherical body 20a is rotatably mounted on the other end of the spring 24a. In this embodiment, one urging means for the storage box is provided. However, the present invention is not limited to this. The urging means as shown in FIG. 4 is provided for each of the pair of storage boxes to be sandwiched. Also good. 3 and 4 exemplify and describe the configuration of the left rotating clamp body of FIG. 1, the configuration of the right rotating clamp body of FIG. 1 has the same configuration as that of FIGS. Yes. Further, means for adjusting the urging force by air pressure instead of the spring may be provided.

  Further, as shown in FIG. 1, the eccentric plate 40 is provided with a funnel-shaped powder supply pipe 12 that guides the powder flowing out from the powder outlet 42 downward. The powder supply pipe 12 guides the pulverized powder downward as indicated by the broken line arrow, and can continuously supply the powder smoothly.

  Next, the operation of the powder supply apparatus according to the present embodiment will be described with reference to FIGS.

  When the powder 30 is introduced into the cylindrical body 10, the motor 52 is rotated. The rotation of the motor 52 is transmitted to the rotating shaft 50a, and the rotating body 48a rotates by rotating the rotating shaft 50a. The eccentric plate 40 is eccentric through the fixed shaft 46a by the rotation of the rotating body 48a. Further, the rotating body 48b rotates through the fixed shaft 46b fixed to the eccentric plate 40 substantially simultaneously with the rotation of the rotating body 48a, thereby rotating the rotating shaft 50b. Therefore, by driving the motor 52, the rotating body 48a and the rotating body 48b can be rotated while being synchronized. Further, since the eccentric bodies 14 are supported by the spherical bodies 20a, 20b, 20c, and 20d so as to be eccentric, and the shake of the eccentric body 14 in the vertical direction is suppressed by the springs 24a and 24b, the eccentric plate 40 is stabilized and eccentric in the horizontal direction. Can do. Further, when the eccentric plate 40 is decentered, the eccentric body 14 is decentered, and the powder 30 that is dissolved while falling along the inclined surface of the bottom portion 26 of the eccentric body 14 is supplied from the powder outlet 42 to the powder supply. It is guided to the pipe 12 and supplied downward.

Embodiment 2. FIG.
The structure of the powder supply apparatus according to another example of the present invention will be described below with reference to FIGS. In addition, the same code | symbol is attached | subjected to the structure same as the powder supply apparatus of Embodiment 1, and the description is abbreviate | omitted.

  The powder supply apparatus 200 includes a cylindrical body 10 into which the powder 30 can be introduced, a support plate 36 fixed to one end of the cylindrical body 10 and the other end fixed to the wall 60, and a lower end of the cylindrical body 10. The eccentric body 14 is mounted in a non-contact state and has a bottom portion 26 formed of an inclined surface inclined downward from the center portion toward the outer peripheral portion, and the eccentric drive for driving the eccentric body 14 eccentrically with respect to the central axis. Means.

  The eccentric drive means of the present embodiment includes an eccentric plate 40 on which the eccentric body 14 is placed and at least one powder outlet 42 formed along the outer periphery of the eccentric body 14 is formed. Eccentric drive sources provided at opposite ends of the eccentric plate 40, and clamping members that hold the both ends of the eccentric plate 40 so as to be movable eccentrically from the thickness direction of the eccentric plate 40, respectively.

  Then, fixed shafts 46a and 46b, which are drive shafts respectively provided at both ends of the eccentric plate 40, are provided, and the eccentric drive sources are respectively provided at both ends of the eccentric plate 40 as shown in FIGS. An eccentric drive source provided at one end is connected to a rotating body 48a that can be eccentrically connected to a circumferential end of a fixed shaft 46a fixed to one end of the eccentric plate 40, and to the center of the rotating body 48a. The rotating shaft 50a, a motor 52 that is a rotation source for rotating the rotating shaft 50a, and a support rod 18a having one end fixed to the motor 52 and the other end fixed to the wall 60. The eccentric drive source at the other end is connected to a rotating body 48b that can be eccentrically connected to a circumferential end of a fixed shaft 46b fixed to the other end of the eccentric plate 40, and to the center of the rotating body 48b. The rotary shaft 50b and a support bar 18b that rotatably supports the rotary shaft 50b. Furthermore, a synchronizing means for synchronizing the rotations of the rotating bodies 48a and 48b is provided. The synchronizing means is a rotating shaft that functions as a synchronizing rotating shaft for connecting the rotating bodies 48a and 48b and the support rods 18a and 18b, respectively. 50a, 50b, pulleys 32a, 32b which are synchronous rotating bodies connected to the rotary shafts 50a, 50b, respectively, and a pair of synchronous auxiliary rotating bodies which assist the synchronous rotation of the pulleys 32a, 32b, idlers 34a, 34b , A pulley 32a, an idler 34a, a pulley 32b, and a belt-like body 35 spanning the idler 34b. The idlers 34a and 34b are rotatably attached to a rotating shaft 38 whose one end is fixed to the support plate 36.

  In the present embodiment, since both rotating bodies can be more accurately synchronized and rotated by the synchronization means, the eccentric body can be decentered stably. Thereby, the powder unraveled at the inclined bottom portion of the eccentric body can be continuously and smoothly discharged from the powder outlet.

  The belt-like body 35 is an elastic belt-like body, for example, a belt or a chain, preferably a timing belt, and a sprocket may be used instead of the pulleys 32a and 32b. Further, sprockets may be used in place of the idlers 34a and 34b.

  Next, the operation of the powder supply apparatus according to the present embodiment will be described with reference to FIGS.

  When the powder 30 is introduced into the cylindrical body 10, the motor 52 is rotated. The rotation of the motor 52 is transmitted to the rotating shaft 50a, and the rotating body 48a rotates by rotating the rotating shaft 50a. The eccentric plate 40 is eccentric through the fixed shaft 46a by the rotation of the rotating body 48a. On the other hand, the pulley 32a is also rotated by the rotation of the rotating shaft 50a, whereby the belt-like body 35 is moved, and the idler 34a, the pulley 32b, and the idler 34b are rotated in synchronization with the rotation of the pulley 32a. Therefore, the rotating body 48b rotates through the fixed shaft 46b fixed to the eccentric plate 40 almost simultaneously with the rotation of the rotating body 48a, and thereby the rotating shaft 50b rotates. Therefore, by driving the motor 52, the rotating body 48a and the rotating body 48b can be rotated while being synchronized. Further, since the eccentric bodies 14 are supported by the spherical bodies 20a, 20b, 20c, and 20d so as to be eccentric, and the shake of the eccentric body 14 in the vertical direction is suppressed by the springs 24a and 24b, the eccentric plate 40 is stabilized and eccentric in the horizontal direction. Can do. Further, when the eccentric plate 40 is decentered, the eccentric body 14 is decentered, and the powder 30 that is dissolved while falling along the inclined surface of the bottom portion 26 of the eccentric body 14 is supplied from the powder outlet 42 to the powder supply. It is guided to the pipe 12 and supplied downward.

  The powder supply device of the present invention can be applied to applications in which powder is continuously supplied and processed.

It is a cross-sectional schematic diagram which shows an example of a structure of the powder supply apparatus of this invention. FIG. 2 is a schematic cross-sectional view taken along line A-A ′ of FIG. 1. It is the schematic which shows an example of a structure of the rotation clamping body of this invention. It is the schematic which shows the other example of a structure of the rotation clamping body of this invention. It is a cross-sectional schematic diagram which shows an example of a structure of the powder supply apparatus of this invention. FIG. 6 is a schematic sectional view taken along line B-B ′ of FIG. 5.

Explanation of symbols

  10 cylindrical body, 12 powder supply pipe, 14 eccentric body, 16 support rod, 18a, 18b support rod, 20a, 20b, 20c, 20d spherical body, 22a, 22b, 22c, 22d storage box, 24a, 24b spring, 26 Bottom, 30 Powder, 40 Eccentric plate, 42 Powder outlet, 46a, 46b Fixed shaft, 48a, 48b Rotating body, 50a, 50b Rotating shaft, 52 Motor, 56a, 56b, 56c, 56d Support shaft, 60 Outer wall , 100 powder supply device.

Claims (10)

A cylindrical body into which powder can be introduced;
An eccentric body mounted in a non-contact state with the lower end portion of the cylindrical body and having a bottom portion formed of an inclined surface inclined downward from the center portion toward the outer peripheral portion;
An eccentric drive means for driving the eccentric body eccentrically with respect to its central axis;
Have
The eccentric drive means includes an eccentric plate on which the eccentric body is placed, and at least one powder outlet formed along the outer periphery of the eccentric body.
Drive shafts respectively provided at both ends of the eccentric plate;
An eccentric rotatable body connected to the other end of the drive shaft,
An eccentric drive source connected to at least one of the rotating bodies;
A powder supply apparatus comprising: In the powder supply apparatus according to claim 1,
Furthermore, the eccentric drive means has a pair of clamping bodies that clamp both ends of the eccentric plate so as to be movable eccentrically from the thickness direction of the eccentric plate, respectively. In the powder supply apparatus according to claim 1 or 2,
At least one of the pair of sandwiching bodies includes a spherical body that can rotate 360 ° and an urging unit that urges the spherical body to rotate. In the powder supply apparatus according to any one of claims 1 to 3,
And a funnel-shaped powder supply pipe which is fixed to an eccentric plate and guides the powder flowing out from the powder outlet. A cylindrical body into which powder can be introduced;
An eccentric body mounted in a non-contact state with the lower end portion of the cylindrical body and having a bottom portion formed of an inclined surface inclined downward from the center portion toward the outer peripheral portion;
An eccentric drive means for driving the eccentric body eccentrically with respect to its central axis;
Have
The eccentric drive means includes an eccentric plate on which the eccentric body is placed, and at least one powder outlet formed along the outer periphery of the eccentric body.
Drive shafts respectively provided at both ends of the eccentric plate;
An eccentric rotatable body connected to the other end of the drive shaft,
An eccentric drive source connected to at least one of the rotating bodies;
Synchronization means for synchronizing the rotations of both rotating bodies;
A powder supply apparatus comprising: In the powder supply apparatus according to claim 5,
The synchronization means includes
A synchronous rotating shaft for connecting the rotating body and the eccentric drive source, and
A synchronous rotating body respectively connected to both synchronous rotating shafts;
A belt-like body that synchronizes the rotation of the synchronous rotating bodies;
A powder supply apparatus comprising: In the powder supply apparatus according to claim 6,
The synchronization means further includes
A powder supply apparatus comprising a synchronous auxiliary rotating body that is provided between both synchronous rotating bodies and is rotatable by movement of the belt-like body. In the powder supply apparatus according to any one of claims 5 to 7,
Furthermore, the eccentric drive means has a pair of clamping bodies that clamp both ends of the eccentric plate so as to be movable eccentrically from the thickness direction of the eccentric plate, respectively. In the powder supply apparatus according to any one of claims 5 to 8,
At least one of the pair of sandwiching bodies includes a spherical body that can rotate 360 ° and an urging unit that urges the spherical body to rotate. In the powder supply apparatus according to any one of claims 5 to 9,
And a funnel-shaped powder supply pipe which is fixed to an eccentric plate and guides the powder flowing out from the powder outlet.

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