JP4576136B2 - Multistage shutter type weighing damper device and material supply device using the same - Google Patents

Description

  The present invention relates to a multi-stage shutter type weighing damper supply device capable of measuring and supplying a predetermined amount from a discharge port of a material storage hopper that stores granular material (for example, granular material such as synthetic resin raw material). .

  Conventionally, when a predetermined amount of granular material is measured and supplied from a discharge port of a material storage hopper that stores the granular material, a supply device suitable for supplying the predetermined amount is appropriately selected and used. It was.

  As these supply devices, for example, the granular material that is naturally dropped from the discharge port is gradually moved from the proximal end to the distal end of the rotational screw by a rotary screw provided in a pipe. There has been a screw-type supply device that is transported and supplies a predetermined amount of granular material from the front of the tube (see, for example, Patent Document 1).

There is also a flap damper type supply device that is provided with a flap damper that can be opened and closed at the discharge port, and supplies a predetermined amount of stored granular material by controlling the opening and closing time of the flap damper. (For example, refer to Patent Document 2).
JP 2000-2111725 (FIGS. 1 and 4) Japanese Patent Laid-Open No. 7-76395 (FIG. 1)

  However, these supply devices have the following problems.

  That is, in the screw-type supply device, the rotational speed of the rotary screw is changed by an inverter or the like to change the supply amount of the granular material transferred. If the maximum supply capacity amount can only be about 20 times the supply capacity amount, and if a supply amount greater than the maximum supply capacity amount is required, the rotary screw itself is changed to a large capacity one. There was a problem that work efficiency was bad.

  On the other hand, in the flap damper type supply device, the supply amount of the granular material is adjusted by changing the opening time of the flap damper, and the supply amount is discharged from zero to all within the material storage hopper. However, there is a problem that the opening and closing operations of the flap damper are likely to vary, and the supply amount cannot be finely adjusted.

  The present invention aims to solve such a problem, and measures the stored granular material without variation, and can supply a predetermined amount of granular material accurately and reliably. A weighing damper supply device is provided.

To achieve the above objective,
A multistage shutter type weighing damper supply device according to claim 1 is a multistage shutter type measurement damper supply device attached to a discharge port of a material storage hopper that stores a granular material, the discharge port, and the multistage shutter type An upper shutter having at least a first measurement hole corresponding to the discharge port and a lower shutter having a second measurement hole corresponding to the material supply port between the material supply port of the measurement damper supply device; And the discharge port and the first measuring hole are communicated with each other by a flexible tube, and the granular material discharged from the discharge port is: The second shutter has a second metering hole for metering.

In the multistage shutter-type weighing damper supply device according to a second aspect, the drive means is provided with a control means capable of controlling the reciprocating position and / or stop time of the upper shutter and the lower shutter.

The multistage shutter type weighing damper supply device according to claim 3 is provided , wherein the first metering hole of the upper shutter matches the discharge port of the material storage hopper between the upper shutter and the lower shutter. In addition, a measuring and adjusting communication pipe for filling the granular material dropped from the material storage hopper or a measuring and adjusting block forming a filling space portion is provided in a replaceable manner.

According to a fourth aspect of the present invention, there is provided the material supply apparatus according to any one of the first to third aspects, wherein the two or more multi-stage shutter type weighing damper supply apparatuses are installed above, and the material supply port of the multi-stage shutter type measurement damper apparatus is provided. Below, a weighing hopper equipped with a weight detection unit is further installed. When the granular material stored in the weighing hopper reaches a predetermined weight, the discharge damper of the weighing hopper is opened and discharged. It has a structure.

The present invention has the following effects.
According to the multi-stage shutter type weighing damper supply device of the first aspect, since the upper shutter and the lower shutter can be reciprocated by the driving means, the first metering hole of the upper shutter and the lower shutter first By adjusting the degree of polymerization with the two metering holes, various supply forms (zero supply to small amount supply to large amount supply) can be performed by one supply device.

Further, the powdered or granular material is discharged by gravity flow from the outlet of the material storage hopper, since then supplied from a material supply port and transferred to the second measuring bore of a shutter, a predetermined amount It can be supplied accurately and reliably without variation.
In addition, since the discharge port and the first measurement hole are communicated with each other by a flexible tube, the first measurement hole is always filled with the granular material regardless of the movement position of the upper shutter. It is possible to shorten the transfer time to the measuring hole and increase the working efficiency .

  According to the multi-stage shutter type weighing damper supply device according to claim 2, since the control means capable of controlling the reciprocating position and / or the stop time is provided, various supply forms (supply zero to small amount supply to large amount supply) Can be controlled automatically or manually.

According to the multi-stage shutter metering damper supply device according to claim 3, the first metering adjustment communicating pipe into the measuring hole of or since capable interposed replacing the formed weighed adjustment block the filling space portion, the first The capacity to be weighed in the measuring hole can be adjusted.

According to the material supply apparatus which concerns on Claim 4 , two or more multistage shutter type | mold measurement damper supply apparatuses are provided, and a different kind of granular material can be mixed with the same apparatus, and each apparatus is The mass is weighed and can be supplied accurately and reliably without causing a predetermined amount of variation.

  Further, the two or more kinds of granular materials mixed by the weighing hopper can be weighed by the weight detection unit, and the mixing ratio and the total weight of the mixed materials can be accurately and reliably executed.

  The present invention will be described with reference to the drawings.

  FIG. 1 is a schematic sectional view showing an embodiment of a multistage shutter type weighing damper supply device A according to the present invention.

  The multistage shutter type weighing damper supply device A is attached to the discharge port Z of the material storage hopper Y storing the granular material X, and the discharge port Z and the material supply port 10 of the multistage shutter type measurement damper supply device A are provided. Between the upper shutter 1 formed with at least the first measuring hole 11 corresponding to the discharge port Z and the lower shutter 2 formed with the second measuring hole 21 corresponding to the material supply port 10, respectively. In this structure, the individual driving means 3 and 4 are provided to be reciprocally movable.

  Here, the powder material means a material including powder, granules, fine thin pieces, short fiber pieces, and the like, but in this embodiment, a resin powder material is used.

  Hereinafter, each member will be described in detail.

  The material storage hopper Y is formed in a gradually narrower taper shape toward the lower end. When the powder material X is stored in the material storage hopper Y by a gas suction device (not shown) such as a blower, the powder material The material X is smoothly collected in the discharge port Z at the lower end.

  The multistage shutter type weighing damper supply device A of the present invention is provided at the discharge port Z of such a material storage hopper Y.

  The multistage shutter-type weighing damper supply device A shown in FIG. 1 includes an upper base material 5 and a lower base material 6 which are arranged at an upper and lower intervals, and the upper base material 5 and the lower base material are provided. An upper shutter 1 and a lower shutter 2 are slidably sandwiched between the members 6.

  An attachment hole 51 is formed in the upper base material 5 and is fixed so that the lower end of the discharge port Z passes through the attachment hole 51.

  The lower base material 6 is formed with a material supply port 10 which is a vertical position of the mounting hole 51 and extends downwardly with a cylindrical body of substantially the same diameter passing through the lower base material 6. Yes.

  The size and shape of the mounting hole 51 and the material supply port 10 are appropriately selected according to the discharge port Z of the material storage hopper Y. The mounting hole 51 and the material supply port 10 are aligned vertically. It is sufficient if it is in the positional relationship.

  The upper shutter 1 includes a first measuring hole 11 in which a through hole having the same diameter as the discharge port Z is opened.

The volume of the first measuring hole 11 is specified by the diameter of the through hole and the thickness of the upper shutter 1. For example, if the diameter of the diameter is 50 mm and the thickness is 10 mm, the volume is 6.25 cm ³ . It becomes volume.

  If the first measuring hole 11 having this volume is filled with the granular material X having a bulk density of 0.5, the first measuring hole 11 has 3 g of granular material at a time. This is a calculation that allows mass measurement of X.

  In the present embodiment, the amount of the granular material X that is mass-measured in the first measurement hole 11 (also referred to as “mass measurement value”) will be described as 3 g.

  On the other hand, the lower shutter 21 includes a second measuring hole 21 opened in a through hole having the same diameter as the material supply port 10.

  Although the 2nd measurement hole 21 shown by the present Example illustrated what was formed in the same aperture and the same volume which becomes the same quantity as the mass measurement value of the 1st measurement hole 11, at least 1st The diameter and volume of the powder material X that is mass-measured in the measuring holes 11 may be transferred.

  The upper shutter 1 and the lower shutter 2 are provided with individual driving means 3 and 4 in order to reciprocate them in the horizontal direction.

  The driving means 3 and 4 are provided with control means 7 and 8 capable of controlling the reciprocating positions and / or stop times of the upper shutter 1 and the lower shutter 2.

  The thus configured multi-stage shutter type weighing damper supply device A of the present invention operates as follows.

  2 and 3 are operation explanatory views schematically showing the operation state of the multi-stage shutter type weighing damper supply device A of the present invention shown in FIG. 1, and FIGS. 2 (a) to 2 (d) show a small amount of powder particles. FIG. 3A to FIG. 3E illustrate an operation explanatory diagram when mass-measuring a large amount of granular material, respectively.

  In addition, the same number is attached | subjected to the site | part which is common in FIG. 1, and the description is abbreviate | omitted.

  First, a case where a small amount of the granular material X is measured will be described.

  First, the discharge port Z of the material storage hopper Y is closed by the upper shutter 1 and the material supply port 10 is held closed by the lower shutter 2 (see FIG. 2A). ].

  From this state, when the upper shutter 1 is moved so that the first measuring hole 11 matches the discharge port Z of the material storage hopper Y, the granular material X in the material storage hopper Y passes through the discharge port Z. The first metering hole 11 of the upper shutter 1 is naturally dropped and filled, and the first metering hole 11 measures the 3 g mass measurement value [see FIG. 2 (b). ].

  Thus, after the mass is measured, the first measuring hole 11 can be moved by driving the driving means 3 to the position where the first measuring hole 11 is matched with the second measuring hole 21 of the lower shutter 2. The particulate material X filled in is naturally dropped and transferred to the second measuring hole 21 [see FIG. 2 (c). ].

  If the lower shutter 2 is moved by driving the driving means 4 so that the second measurement hole 21 matches the material supply port 10, the powder particles filled in the second measurement hole 21. The material X naturally falls from the material supply port 10 and is supplied to a molding apparatus or the like, and only 3 g of the granular material material X can be supplied accurately and reliably.

  In such a multi-stage shutter type weighing damper supply device A, the granular material that is naturally dropped and introduced from the material storage hopper Y simply by reciprocating the upper shutter 1 and the lower shutter 2 alternately by the driving means 3 and 4. A predetermined amount of the powder material X can be supplied from the material supply port 10 by accurately weighing X.

  In addition, the mass measurement is performed by adjusting the position (capacity and depth) of the first measurement hole 11 and the overlapping state of the first measurement hole 11 and the discharge port Z of the material storage hopper Y by the control means 7. Can be changed in multiple stages such as 1/4, 1/3, 1/2, FULL, etc., and various supply forms (supply zero-small amount supply-large amount supply) can be made into one multistage shutter type weighing damper supply device A can be done.

  Next, a case where a large amount of the granular material X is measured will be described.

  First, in the same manner as in FIGS. 2A and 2B, when the upper shutter 1 is moved so that the discharge port Z of the material storage hopper Y and the first measurement hole 11 completely match, the material storage is performed. The particulate material X in the hopper Y is naturally dropped into the first measuring hole 11 of the upper shutter 1 and filled (see FIGS. 3A and 3B). ].

  From this state, if the second measuring hole 21 is moved by driving the driving means 4 to a position matching the first measuring hole 11, the first measuring hole 11 and the second measuring hole 21 are moved. The particulate material X that is completely matched and stored in the material storage hopper Y is supplied by being naturally dropped continuously from the material supply port 10 (see FIG. 3C). ].

  At this time, if the stop time of the lower shutter 2 is controlled by a control means (such as a timer) provided in the drive means 4, the supply amount of the granular material X that is continuously supplied as the control time elapses. Can be adjusted.

  Then, when the supply amount of the granular material X approaches a predetermined amount, the continuous supply of the granular material X stops when the upper shutter 1 and / or the lower shutter 2 are moved [FIG. ), See (e). ].

  Then, if mass measurement is performed until it reaches a predetermined amount in the same manner as in FIG. 2, a large amount of the granular material X can be supplied accurately and reliably in a short time.

  FIG. 4 is a schematic cross-sectional view showing another embodiment of the multi-stage shutter type weighing damper supply device A according to the present invention, and FIGS. 5 (a) to 5 (c) are multi-stage shutter type weighing as shown in FIG. 4. FIG. 6 is an operation explanatory diagram outlining the operation state of the damper supply device A.

  In addition, the same code | symbol is attached | subjected to the site | part corresponding to FIGS. 1-3, and the description is abbreviate | omitted.

  In the multistage shutter type weighing damper supply device A, the discharge port Z of the material storage hopper Y storing the powder material X and the first measurement hole 11 are communicated with each other by a flexible pipe 9. The granular material material X discharged from is characterized in that it is metered in the second metering hole 21 of the lower shutter 2.

  This multistage shutter-type weighing damper supply device A is suitable for a case where the discharge port Z and the material supply port 11 are in a displaced positional relationship.

  That is, the particulate material X stored in the material storage hopper Y is directly filled into the first measuring hole 11 and the second measuring hole 21 of the upper shutter 1 through the discharge port Z [see FIG. . ].

  From this state, when the lower shutter 2 is moved by the driving means 4 so that the second measurement hole 21 matches the material supply port 10, the powder material X filled in the second measurement hole 21. Can be supplied accurately and reliably only by a small amount of the granular material X (for example, 3 g) which is supplied by being naturally dropped from the material supply port 10 and is mass-measured by the second measuring hole 21 [FIG. )reference. ].

  Further, the second measuring hole 21 of the lower shutter 2 is held at a position where it overlaps with the material supply port 10, and the first measuring hole 11 of the upper shutter 1 is connected to the second measuring hole 21 of the lower shutter 2. When the polymer material is polymerized, the granular material X in the material storage hopper Y is naturally dropped continuously from the material supply port 10 and supplied (see FIG. 5C). ].

  At this time, the stop time of the upper shutter 1 and the lower shutter 2 is controlled by the control means 7 and 8 (timer or the like), and the supply amount of the powder material X that is continuously supplied can be adjusted as the control time elapses. .

  Then, when the discharge amount of the granular material X approaches a predetermined amount, the continuous supply of the granular material X stops when the upper shutter 1 and / or the lower shutter 2 are moved [FIG. ), See (b). ].

  Then, if mass measurement is performed in the second measuring hole 21 until the predetermined amount is reached in the above-described manner, a large amount of the powder material X can be supplied accurately and reliably in a short time.

  In such a multistage shutter type metering damper supply device A, the discharge port Z and the first metering hole 11 of the upper shutter 1 are communicated with each other through the flexible tube 9, so that the upper shutter 1 is located at any position. The first measuring hole 11 is always filled with the granular material X from the material storage hopper Y, and the transfer time to the second measuring hole 21 can be shortened, so that the working efficiency can be improved. .

  FIG. 6 is a schematic sectional view showing still another embodiment of the multistage shutter type weighing damper supply device A according to the present invention.

  In addition, the same code | symbol is attached | subjected to the site | part corresponding to FIGS. 1-5, and the description is abbreviate | omitted.

  The multistage shutter type weighing damper supply device A is configured such that when the first weighing hole 11 is aligned with the discharge port Z of the material storage hopper Y between the upper shutter 1 and the lower shutter 2, the material storage hopper Y There is a feature in that a metering adjustment communication pipe 110 for filling the granular material material X falling from the above or a metering adjustment block (not shown) forming a filling space portion is interposed in a replaceable manner.

  In this example, a cylindrical measurement adjustment communication pipe 110 having the same inner diameter as that of the first measurement hole 11 is fixed to the lower part of the upper shutter 1 so as to be replaceable by a fixing tool. In place of the tube 110, a metering adjustment block (not shown) in which a filling space portion that penetrates the same diameter as the first metering hole 11 is formed at a block-like arbitrary position in the same manner as above. May be.

  That is, the particulate material X in the material storage hopper Y is naturally dropped and filled into the first measurement hole 11 of the upper shutter 1 through the discharge port Z. At this time, the capacity of the first measurement hole 11 is filled. In addition, the measurement adjustment communication pipe 110 is also filled, and the mass measurement value measured by the first measurement hole 11 is the volume of both the first measurement hole 11 and the measurement adjustment communication pipe 110. .

  Therefore, for example, when it is desired to change the mass measurement value of the first measurement hole 11, it is not necessary to replace the upper shutter 1 itself only by replacing the measurement adjustment communication pipe 110.

  As described above, in the present invention, the first measurement hole 11 is replaced by replacing the measurement adjustment communication pipe 110 having a different length or inner diameter, or replacing a measurement adjustment block (not shown) having a different capacity of the filling space. The capacity to be filled can be easily changed, and the mass measurement value of the first measurement hole 11 can be easily adjusted.

  FIG. 7 is a schematic sectional view showing an example of a material supply device using the multistage shutter type weighing damper supply devices A and A according to the present invention.

  In addition, the same code | symbol is attached | subjected to the site | part corresponding to FIGS. 1-6, and the description is abbreviate | omitted.

  In this material supply device B, two or more multi-stage shutter type weighing damper supply devices A and A exemplified in FIGS. 1 to 6 are provided on the upper side, and a weight detection unit B1 is provided below the material supply port 10. The weighing hopper B2 is further installed, and when the material powder X stored in the weighing hopper B2 reaches a predetermined weight, the discharge damper B3 of the weighing hopper B2 is opened and discharged. A mixer (not shown) such as a stirring blade is provided in the weighing hopper B2.

  This material supply apparatus B is suitable for mixing two or more kinds of powder material materials X1 and X2 as in the case of mixing pigments, additives and the like with raw materials such as resin pellets.

  That is, in general, in the case of the granular material X in which the additive X2 is mixed with the raw material X1, the amount of each of the additive X2 is small compared to the large amount of the raw material X1, so that the additive X2 is provided side by side. Of the two multi-stage shutter type weighing damper supply devices A and A, one material storage hopper Y1 stores a granular material X1 (hereinafter referred to as a raw material X1) as a raw material, and the other, A granular material X2 (hereinafter referred to as an additive etc. X2) serving as an additive or the like is stored.

  In this case, if the amount of both is inaccurate, the mixed finish will be inhomogeneous, so that a large amount of raw material X1 is accurately supplied to the weighing hopper B2 by a predetermined amount and a small amount. It is necessary to accurately supply the raw material X2.

  Therefore, two or more multi-stage shutter type weighing damper supply devices A and A are provided, and in the above manner, one device A accurately supplies a large amount of raw material X1 into the weighing hopper B2 and the other device. A is such that a small amount of additive X2 and the like is accurately supplied into the weighing hopper B2.

  However, it is possible to store these raw materials X1 or additives X2 in order in the material storage hopper Y of the multistage shutter type weighing damper supply device A shown in FIGS. 1 to 6 and weigh each in turn. The material supply device B of the present invention is efficient in that the mixing operation can be performed simultaneously.

  Further, the weighing hopper B2 includes a weight detection unit B1 capable of weighing the total weight of the powder material X (X1, X2) in the weighing hopper B2, so that two or more kinds of the supplied hopper B2 are mixed. The total weight of the powder material X (X1, X2) can be accurately and reliably measured, and the powder material X having the correct mixing rate and weight is discharged from the discharge damper B3.

  According to such a material supply device B, two or more multi-stage shutter type weighing damper supply devices A and A are provided, and different types of raw materials X1 and additives X2 are measured with the same devices A and A and the weighing hopper B2 Since it is supplied to the weighing hopper B2 after being weighed by each of the devices A and A, the granular material having an accurate and reliable mixing rate without a predetermined amount of variation. Material X can be supplied.

  Moreover, the total weight of the two or more mixed powder material materials X (X1, X2) supplied to the weighing hopper B2 can be accurately and reliably measured by the weight detection unit B1.

  INDUSTRIAL APPLICABILITY The present invention can be effectively used as a multistage shutter type weighing damper supply device and a material supply device that can accurately measure the stored granular material.

It is the schematic sectional drawing which showed one Example of the multistage shutter type | mold measurement damper supply apparatus A which concerns on this invention. It is operation | movement explanatory drawing which outlined the operation state of the multistage shutter type | mold measurement damper supply apparatus A of this invention shown in FIG. 1, (a)-(d) is operation | movement in the case of mass-measuring a small amount of granular material. It is explanatory drawing. It is operation | movement explanatory drawing which outlined the operation | movement state of the multistage shutter type | formula measurement damper supply apparatus A of this invention shown in FIG. 1, (a)-(e) is operation | movement in the case of mass-measuring a lot of granular material. Each explanatory drawing is illustrated. It is the schematic sectional drawing which showed the other Example of the multistage shutter type | mold measurement damper supply apparatus A which concerns on this invention. (A)-(c) is operation | movement explanatory drawing which outlined the operation state of the multistage shutter type | mold measurement damper supply apparatus A shown in FIG. It is the schematic sectional drawing which showed other Example of the multistage shutter type | formula measurement damper supply apparatus A which concerns on this invention. It is the schematic sectional drawing which showed an example of the material supply apparatus using the multistage shutter type | mold measurement damper supply apparatus A and A which concern on this invention.

Explanation of symbols

A Multistage shutter type weighing damper supply device B1 Weight detector B2 Weighing hopper B3 Discharge damper X, X1, X2 Powder material Y, Y1, Y2 Material storage hopper Z Discharge port 1 Upper shutter 10 Material supply port 11 First metering Hole 2 Lower shutter 21 Second metering hole 3 Driving means (upper shutter)
4 Driving means (lower shutter)
7 Control means (upper shutter)
8 Control means (lower shutter)
9 Flexible pipe 110 Weighing adjustment communication pipe (weighing adjustment block forming filling space)

Claims (4)

A multistage shutter-type weighing damper supply device attached to a discharge port of a material storage hopper that stores granular material ,
And the outlet, between the material supply port of the multi-stage shutter metering damper feeder, an upper shutter forming the first measuring bore in accordance with at least the outlet, the corresponding to the material supply port 2 A lower shutter formed with a measuring hole is provided so as to be reciprocally movable by a driving means , and the discharge port and the first measuring hole are communicated by a flexible pipe,
A multistage shutter-type weighing damper supply device having a structure in which the granular material discharged from the discharge port is measured by the second measurement hole of the lower shutter . In claim 1,
A multistage shutter-type weighing damper supply device in which the driving means is provided with control means capable of controlling the reciprocating position and / or stop time of the upper shutter and the lower shutter. In claim 1 or 2 ,
Between the upper shutter and the lower shutter, when the first metering hole of the upper shutter matches the outlet of the material storage hopper, the granular material dropped from the material storage hopper is filled. A multistage shutter type weighing damper supply device having a structure in which a metering adjustment communicating pipe or a metering adjustment block forming a filling space is interposed in a replaceable manner. Two or more multi-stage shutter type weighing damper supply devices according to any one of claims 1 to 3 are installed above,
Below the material supply port of the multistage shutter type weighing damper device, a weighing hopper provided with a weight detection unit is further installed, and when the granular material stored in the weighing hopper reaches a predetermined weight, A material supply device in which the discharge damper of the weighing hopper is opened and discharged.

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