阅读说明：本技术 物料给料计量装置 (Material feeding metering device ) 是由 张博文 张竹 周顺峰 徐国瑞 张祥 王兵 董银善 于 2021-10-09 设计创作，主要内容包括：本发明公开了一种物料给料计量装置,属于物料给料计量领域。包括至少一个容积目标斗和若干个微量补充斗,容积目标斗和微量补充斗上方设置有为容积目标斗和微量补充斗填装物料的旋转料仓,容积目标斗和微量补充斗的落料口处均设置有可开合的第一控制板,容积目标斗和微量补充斗的落料口下方设置有称重计量料斗,称重计量料斗上设置有第一称重传感器,称重计量料斗的落料口处设置有可开合的第二控制板,称重计量料斗的落料口下方设置有用于夹持包装袋的夹袋装置。本发明在进行物料分袋包装时,通过容积目标斗给料,并通过若干个微量补充斗内的物料对容积目标斗的给料进行相加调节,最终形成最接近目标值的重量,提高了给料的精度和速度。(The invention discloses a material feeding metering device, and belongs to the field of material feeding metering. The automatic packaging bag weighing and feeding device comprises at least one volume target hopper and a plurality of micro-supplement hoppers, wherein rotary storage bins for filling materials for the volume target hopper and the micro-supplement hoppers are arranged above the volume target hopper and the micro-supplement hoppers, openable first control plates are arranged at blanking ports of the volume target hopper and the micro-supplement hoppers, weighing and metering hoppers are arranged below blanking ports of the volume target hopper and the micro-supplement hoppers, first weighing sensors are arranged on the weighing and metering hoppers, openable second control plates are arranged at blanking ports of the weighing and metering hoppers, and bag clamping devices for clamping packaging bags are arranged below the blanking ports of the weighing and metering hoppers. When the materials are packaged in bags, the materials are fed through the volume target hopper, and the feeding of the volume target hopper is added and adjusted through the materials in the plurality of micro supplement hoppers, so that the weight closest to a target value is finally formed, and the feeding precision and speed are improved.)

1. A material feeding and metering device is characterized by comprising at least one volume target bucket and a plurality of micro supplement buckets, wherein:

the automatic packaging machine is characterized in that rotary storage bins for filling materials for the volume target hopper and the trace supplement hopper are arranged above the volume target hopper and the trace supplement hopper, openable first control plates are arranged at blanking ports of the volume target hopper and the trace supplement hopper, weighing and metering hoppers are arranged below blanking ports of the volume target hopper and the trace supplement hopper, a first weighing sensor is arranged on the weighing and metering hoppers, openable second control plates are arranged at blanking ports of the weighing and metering hoppers, and bag clamping devices for clamping packaging bags are arranged below the blanking ports of the weighing and metering hoppers;

the total weight of the materials contained in all the volume target hoppers is less than or equal to the rated weight of the packaging bag, and the total weight of the materials contained in all the volume target hoppers and all the micro supplement hoppers is greater than the rated weight of the packaging bag;

the first weighing sensor is connected with the controller, the weighing and metering hopper receives the material falling from the volume target hopper and weighs for the first time through the material in the first weighing sensor weighing hopper, the controller calculates a first difference value according to the rated weight of the packaging bag and the weight of the material weighed for the first time in the weighing hopper, the controller finds out a first combination of the micro-supplement hopper according to the first difference value, the sum of the weight of the materials contained in the first combination of the micro-supplement hopper is closest to the first difference value, a first control panel of the first combination of the micro-supplement hopper is opened, and the material is supplemented into the weighing and metering hopper through the first combination of the micro-supplement hopper.

2. The material feeding and metering device of claim 1, wherein after the materials are supplemented into the weighing and metering hopper through the first combination of the micro supplement hoppers, the second control board is opened, so that the materials in the weighing and metering hopper fall into the packaging bag;

or after materials are supplemented into the weighing and metering hopper through the first combination of the micro supplement hopper, weighing the materials in the weighing and metering hopper for the second time through the first weighing sensor; the controller calculates the second difference according to the rated weight of wrapping bag and the weight that the interior material of weighing hopper weighed for the second time, if the second difference is in the maximum allowable error range of wrapping bag, then open the second control panel for the material in the weighing hopper falls in to the wrapping bag, otherwise the controller basis the second combination of trace supplementary fill is found out to the second difference, the material weight sum that the second combination of trace supplementary fill held is closest to the second difference, opens the first control panel of the second combination of trace supplementary fill, through the second combination of trace supplementary fill is to the interior supplementary material of weighing hopper.

3. A material feeding and metering device as claimed in claim 1 or 2, wherein a receiving container is arranged below the blanking port of the micro replenishment hopper, a second weighing sensor is arranged on the receiving container, and the receiving container is connected with a driving device for driving the receiving container to unload materials.

4. A material feed metering device as set forth in claim 3, characterized in that a raw material bin is disposed above the rotary bin.

5. A material feeding and metering device as claimed in claim 4, wherein the volume target hopper, the micro replenishment hopper and the raw material bin are mounted on a main frame, one end of the first weighing sensor is arranged on the main frame, the other end of the first weighing sensor is connected with the weighing and metering hopper, one end of the second weighing sensor is arranged on the main frame, and the other end of the second weighing sensor is connected with the receiving container.

6. The material feeding and metering device as claimed in claim 1 or 2, wherein the weight of the materials contained in the plurality of micro-supplement hoppers is increased from small to large according to a set multiple, and the weight of the materials contained in the smallest micro-supplement hopper is half of the maximum allowable error range of the packaging bag; wherein the set multiple is more than one time and less than or equal to two times.

7. A material feed metering device as set forth in claim 6 wherein the plurality of micro-hoppers hold material of a weight which increases by a factor of two from as little as possible to as much as possible.

8. A material feeding and metering device as claimed in claim 1 or 2, wherein the volume target hopper and the micro-supplement hopper each comprise an inner tube and an outer tube which is positioned below the inner tube and is sleeved on the periphery of the inner tube, the inner tube and the outer tube can be adjusted in the up-down direction, and a sealing rubber ring is arranged between the inner tube and the outer tube.

9. A material feeding and metering device as claimed in claim 8, wherein the outer tube is provided with an adjusting ring which is sleeved on the adjusting post, and the adjusting post is provided with a locking bolt for locking the position of the adjusting ring.

10. A material feeding and metering device as claimed in claim 1 or 2, characterized in that a gear ring is mounted on the outer edge of the rotary bin, the gear ring is meshed with a gear on the output shaft of the motor,

or a conical cylinder is arranged in the rotary bin and is connected with the motor through a connecting plate.

11. A material feeding and metering device as claimed in claim 1 or 2, wherein a plurality of vertical material pushing and blocking plates are arranged in the rotary bin, and the bottoms of the material pushing and blocking plates are in contact with the tops of the volume target hopper and the micro supplement hopper.

12. A material feeding and metering device as claimed in claim 1 or 2, wherein an auxiliary blanking device is arranged on the rotary bin, and the auxiliary blanking device comprises a vibration motor or an air hammer.

13. A material feeding and metering device as claimed in claim 1 or 2, wherein a second flexible connecting structure is arranged between the blanking port of the weighing and metering hopper and the bag clamping device; the first control plate and the second control plate are driven by an air cylinder.

Technical Field

The invention relates to the field of material feeding and metering, in particular to a material feeding and metering device.

Background

When powdery, granular and small block materials are packaged in bags, feeding and metering are needed, the conventional feeding and metering device has the modes of spiral feeding, vibration feeding, scraper conveying feeding, gravity feeding and the like, but the feeding mode cannot realize accurate metering at present, so that the weight of each bag of products cannot be accurately controlled during bag packaging.

Disclosure of Invention

The invention provides a material feeding metering device, which improves the feeding precision and speed.

The technical scheme provided by the invention is as follows:

a material feed metering device comprising at least one volumetric target hopper and a plurality of micro-replenishment hoppers, wherein:

the automatic packaging machine is characterized in that rotary storage bins for filling materials for the volume target hopper and the trace supplement hopper are arranged above the volume target hopper and the trace supplement hopper, openable first control plates are arranged at blanking ports of the volume target hopper and the trace supplement hopper, weighing and metering hoppers are arranged below blanking ports of the volume target hopper and the trace supplement hopper, a first weighing sensor is arranged on the weighing and metering hoppers, openable second control plates are arranged at blanking ports of the weighing and metering hoppers, and bag clamping devices for clamping packaging bags are arranged below the blanking ports of the weighing and metering hoppers;

the total weight of the materials contained in all the volume target hoppers is less than or equal to the rated weight of the packaging bag, and the total weight of the materials contained in all the volume target hoppers and all the micro supplement hoppers is greater than the rated weight of the packaging bag;

the first weighing sensor is connected with the controller, the weighing and metering hopper receives the material falling from the volume target hopper and weighs for the first time through the material in the first weighing sensor weighing hopper, the controller calculates a first difference value according to the rated weight of the packaging bag and the weight of the material weighed for the first time in the weighing hopper, the controller finds out a first combination of the micro-supplement hopper according to the first difference value, the sum of the weight of the materials contained in the first combination of the micro-supplement hopper is closest to the first difference value, a first control panel of the first combination of the micro-supplement hopper is opened, and the material is supplemented into the weighing and metering hopper through the first combination of the micro-supplement hopper.

Further, after the materials are supplemented into the weighing and metering hopper through the first combination of the micro supplement hopper, the second control panel is opened, so that the materials in the weighing and metering hopper fall into the packaging bag;

or after materials are supplemented into the weighing and metering hopper through the first combination of the micro supplement hopper, weighing the materials in the weighing and metering hopper for the second time through the first weighing sensor; the controller calculates the second difference according to the rated weight of wrapping bag and the weight that the interior material of weighing hopper weighed for the second time, if the second difference is in the maximum allowable error range of wrapping bag, then open the second control panel for the material in the weighing hopper falls in to the wrapping bag, otherwise the controller basis the second combination of trace supplementary fill is found out to the second difference, the material weight sum that the second combination of trace supplementary fill held is closest to the second difference, opens the first control panel of the second combination of trace supplementary fill, through the second combination of trace supplementary fill is to the interior supplementary material of weighing hopper.

Furthermore, a receiving container is arranged below the blanking port of the micro supplement hopper, a second weighing sensor is arranged on the receiving container, and the receiving container is connected with a driving device for driving the receiving container to unload materials.

Furthermore, a raw material bin is arranged above the rotary bin.

Furthermore, the volume target hopper, the micro-supplement hopper and the raw material bin are arranged on a main frame, one end of the first weighing sensor is arranged on the main frame, the other end of the first weighing sensor is connected with the weighing and metering hopper, one end of the second weighing sensor is arranged on the main frame, and the other end of the second weighing sensor is connected with the receiving container.

Furthermore, the weight of the materials contained in the micro supplement hoppers is increased from small to large according to a set multiple, and the weight of the materials contained in the smallest micro supplement hopper is half of the maximum allowable error range of the packaging bag; wherein the set multiple is more than one time and less than or equal to two times.

Further, the weight of the materials contained in the micro-supplement hoppers is increased from small to large by two times.

Furthermore, the volume target hopper and the micro-supplement hopper both comprise inner pipes and outer pipes located below the inner pipes and sleeved on the peripheries of the inner pipes, the inner pipes and the outer pipes can be adjusted in the up-down direction, and sealing rubber rings are arranged between the inner pipes and the outer pipes.

Furthermore, the outer pipe is provided with an adjusting ring, the adjusting ring is sleeved on the adjusting column, and the adjusting column is provided with a locking bolt for locking the position of the adjusting ring.

Furthermore, a gear ring is arranged on the outer edge of the rotary bin and meshed with a gear on the output shaft of the motor,

or a conical cylinder is arranged in the rotary bin and is connected with the motor through a connecting plate.

Furthermore, a plurality of vertical material pushing and blocking plates are arranged in the rotary bin, and the bottoms of the material pushing and blocking plates are in contact with the tops of the volume target hopper and the micro supplement hopper.

Furthermore, be equipped with supplementary unloader on the rotatory feed bin, supplementary unloader includes vibrating motor or air hammer.

Further, a second flexible connecting structure is arranged between the blanking port of the weighing and metering hopper and the bag clamping device; the first control plate and the second control plate are driven by an air cylinder.

The invention has the following beneficial effects:

when the materials are packaged in bags, the materials are fed through the volume target hopper, and the feeding of the volume target hopper is added and adjusted through the materials in the plurality of micro supplement hoppers, so that the weight closest to a target value is finally formed, and the feeding precision and speed are improved.

Drawings

FIG. 1 is a front view of the material feed metering device of the present invention;

FIG. 2 is a side view of the material feed metering device of the present invention;

FIG. 3 is a top view of the material feed metering device of the present invention at the volumetric target hopper and the micro-replenishment hopper;

FIG. 4 is a top view of the material feed metering device of the present invention at a rotating bin;

FIG. 5 is a front view of the volume target bucket/micro make-up bucket;

FIG. 6 is a right side view of the volume target bucket/micro make-up bucket;

FIG. 7 is a front view of the receiving container;

fig. 8 is a side view at the receiving container.

Detailed Description

In order to make the technical problems, technical solutions and advantages of the present invention more apparent, the following detailed description is given with reference to the accompanying drawings and specific embodiments.

The embodiment of the invention provides a material feeding and metering device, which comprises at least one volume target bucket 8 and a plurality of micro-supplement buckets 9 as shown in figures 1 to 8, wherein the volume target bucket 8 and the micro-supplement buckets 9 are arranged on a main frame 1, and the material feeding and metering device comprises:

the rotary storage bin 3 for filling materials into the volume target bucket 8 and the micro-supplement bucket 9 is arranged above the volume target bucket 8 and the micro-supplement bucket 9, the first control plates 13 capable of opening and closing are arranged at the blanking openings of the volume target bucket 8 and the micro-supplement bucket 9, the first control plates 13 are driven to open and close through the air cylinders 14, and the air cylinders 14 are installed on the main frame 1 through the air cylinder supports 15.

And a weighing and metering hopper 22 is arranged below the blanking ports of the volume target hopper 8 and the micro supplement hopper 9, a first weighing sensor is arranged on the weighing and metering hopper 22, one end of the first weighing sensor is arranged on the main frame 1, and the other end of the first weighing sensor is connected with the weighing and metering hopper 22 and used for measuring the weight of materials in the weighing and metering hopper 22.

The second control panel 29 which can be opened and closed is arranged at the blanking port 23 of the weighing and metering hopper 22, the second control panel 29 is driven to be opened and closed through the air cylinder 24, and the bag clamping device 26 used for clamping the packaging bags is arranged below the blanking port 23 of the weighing and metering hopper 22.

There may be one or more, e.g., two, volume hoppers described above. The total weight of the materials contained in all the volume target hoppers 8 is less than or equal to the rated weight of the packaging bag, and the total weight of the materials contained in all the volume target hoppers 8 and all the micro supplement hoppers 9 is more than the rated weight of the packaging bag.

When the rotary material storage bin is used, materials enter the rotary material storage bin 3, the rotary material storage bin 3 rotates under the action of power, openings of the volume target hopper 8 and the micro-supplement hopper 9 are located in the rotary material storage bin 3 in the feeding process, the rotary material storage bin 3 rotates for a certain angle, for example, 90 degrees, the materials in the volume target hopper 8 and the micro-supplement hopper 9 are separated from the rotary material storage bin, and the volume target hopper 8 and the micro-supplement hopper 9 are completely filled.

In order to conveniently fill materials into the volume target hopper 8 and the trace supplement hopper 9, a plurality of vertical material pushing and blocking plates 33 are arranged in the rotary stock bin 3, and the bottoms of the material pushing and blocking plates 33 are in contact with the tops of the volume target hopper 8 and the trace supplement hopper 9. The material pushing and blocking plate 33 rotates along with the rotating bin 3, and the material is pushed by the material pushing and blocking plate 33 in the rotating bin 3. When the rotary bin 3 rotates for a certain angle, the materials are pushed above the volume target hopper 8 and the trace supplement hopper 9 by the material pushing and blocking plate 33, the materials are filled in the volume target hopper 8 and the trace supplement hopper 9, and after the rotary bin 3 rotates for a certain angle again, the materials above the volume target hopper 8 and the trace supplement hopper 9 are pushed away from the volume target hopper 8 and the trace supplement hopper 9 by the material pushing and blocking plate 33, so that the materials in the rotary bin 3 are isolated from the volume target hopper 8 and the trace supplement hopper 9, and one-time filling is completed.

The number of the material pushing striker plates 33 may be one or more, as shown in fig. 4, two material pushing striker plates 33 are arranged in parallel at a certain distance from each other.

The first control board 13 of the volume target bucket 8 is opened, so that the material in the volume target bucket 8 directly falls into the weighing hopper 22 through the blanking port of the volume target bucket 8, and the weighing hopper 22 receives the material falling from the volume target bucket 8.

The first weighing sensor is connected with the controller, the materials in the weighing hopper 22 are weighed for the first time, the controller calculates a first difference value according to the rated weight of the packaging bag and the first weighing weight of the materials in the weighing hopper 22, the controller finds out a first combination of the micro-supplement hoppers 9 according to the first difference value, the sum of the weights of the materials contained in the first combination of the micro-supplement hoppers 9 is closest to the first difference value, the first control panel 13 of the first combination of the micro-supplement hoppers 9 is opened, and the materials are supplemented into the weighing hopper 22 through the first combination of the micro-supplement hoppers 9. The difference between the material in the weighing hopper 22 and the rated weight of the packaging bag is replenished by the number closest to the replenishment difference in the combination of the weights in the micro replenishment hopper 9, and the final number of measurements is made closest to the set target value (i.e., the rated weight of the packaging bag).

Taking four micro-supplement hoppers as an example, assuming that the rated weight of a packaging bag is 10 kilograms, the material in a volume target hopper is 9.98 kilograms, the weight of the material in the micro-supplement hoppers is 0.01, 0.02, 0.04 and 0.08 kilograms respectively, and then the difference of 0.02 kilogram is directly supplemented by the material in the micro-supplement hoppers of 0.02 kilogram; if the unloading of the volume target bucket is 9.97 kilograms, the material is supplemented by the combined weight of two micro supplement buckets with the weights of 0.01 kilogram and 0.02 kilogram, and if the unloading of the volume target bucket is 9.95 kilograms, the material is supplemented by the combined weight of the micro supplement buckets with the weights of 0.01 kilogram and 0.04 kilogram.

After the bag clamping device 26 receives the bag sleeving signal, the bag clamping opening is opened, all the materials in the weighing and metering hopper 22 are sent into a packaging bag, then the next packaging link is carried out, and the like.

When the materials are packaged in bags, the materials are fed through the volume target hopper, and the feeding of the volume target hopper is added and adjusted through the materials in the plurality of micro supplement hoppers, so that the weight closest to a target value is finally formed, and the feeding precision and speed are improved.

As described above, after the materials are supplied into the weighing hopper 22 by the first combination of the micro-supply hoppers 9, the second control plate 29 is opened, so that the materials in the weighing hopper 22 fall into the package.

Or, after the materials are supplemented into the weighing hopper through the first combination of the micro-supplement hoppers, the second control board 29 is not directly opened, but the materials in the weighing hopper 22 are weighed again, and the materials are supplemented again through the micro-supplement hoppers according to the weighing result, so that the metering precision can be improved, and the method specifically comprises the following steps:

weighing the material in the weighing and metering hopper 22 for the second time through the first weighing sensor; the controller calculates a second difference value according to the rated weight of the packaging bag and the second weighing weight of the materials in the weighing hopper 22, if the second difference value is within the maximum allowable error range of the packaging bag, the second control board 29 is opened, the materials in the weighing hopper 22 fall into the packaging bag, otherwise, the controller finds out a second combination of the micro-supplement hoppers 9 according to the second difference value, the sum of the weights of the materials contained in the second combination of the micro-supplement hoppers 9 is closest to the second difference value, the first control board 13 of the second combination of the micro-supplement hoppers 9 is opened, and the materials are supplemented into the weighing hopper 22 through the second combination of the micro-supplement hoppers 9.

In order to further improve the precision, a receiving container 19 is arranged below the blanking port of the micro supplement hopper 9, a second weighing sensor 20 is arranged on the receiving container 19, the second weighing sensor 20 is arranged on a sensor support 21, one end of the sensor support 21 is arranged on the main frame 1, and the other end of the sensor support 21 is connected with the receiving container 19 and used for measuring the weight of the material in the receiving container 19.

The receiving container 19 is connected with a driving device 30 for driving the receiving container 19 to unload materials, the driving device 30 can be an air cylinder, and the air cylinder opens a partition plate 31 at the bottom of the receiving container 19 to realize unloading.

The material in the micro-supplement hopper 9 firstly falls into the receiving container 19 and is weighed by the second weighing sensor 20, and then the receiving container 19 is driven by the driving device to discharge, so that the precisely metered material falls into the weighing hopper 22.

For convenient feeding, rotatory feed bin 3 top is provided with former feed bin 2, and former feed bin 2 is installed on main frame 1. The material is poured into the raw material bin 2, and the material enters the rotary bin 3 through the raw material bin 2.

In the invention, the capacity of the volume target bucket 8 is determined according to the rated weight of the packaging bag, the weight of the materials contained in the plurality of micro supplement buckets 9 is increased progressively from small to large according to a set multiple, and the weight of the materials contained in the smallest micro supplement bucket 9 is half of the maximum allowable error range of the packaging bag; the set multiple is greater than one time and less than or equal to two times, for example, 1.8 times, 1.9 times, 2 times, and the like.

Preferably, the set multiple is two times, and the weight of the material contained in the micro-replenishment buckets is increased from small to large by two times.

The capacity of the volume target bucket 8 and the capacity of the micro-supplement bucket 9 are adjustable, the volume target bucket 8 and the micro-supplement bucket 9 respectively comprise an inner tube 10 and an outer tube 11 which is positioned below the inner tube 10 and sleeved on the periphery of the inner tube 10, and the inner tube 10 and the outer tube 11 can be adjusted in the vertical direction, so that the capacity of the volume target bucket 8 and the capacity of the micro-supplement bucket 9 are adjustable. A sealing rubber ring 12 is arranged between the inner pipe 10 and the outer pipe 11.

The outer pipe 11 is provided with an adjusting ring 16, the adjusting ring 16 is sleeved on an adjusting column 17, the adjusting column 17 is installed on the main frame 1, and the adjusting column 17 is provided with a locking bolt 18 for locking the position of the adjusting ring 16.

In order to realize the rotation of the rotating bin, a gear ring 4 is arranged on the outer edge of the rotating bin 3, a motor 5 is arranged on a two-layer platform 7 of the main frame 1, a gear 6 is arranged on an output shaft of the motor 5, and the gear 6 and the gear ring 4 are installed in an occluded mode.

Or a conical cylinder is arranged in the rotary bin 3 and is connected with the motor through a connecting plate.

The rotary bin 3 can be provided with an auxiliary blanking device 32 which comprises a vibrating motor or an air hammer, and the auxiliary rotary bin 3 is vibrated or knocked to carry out blanking, so that the phenomenon that the blanking is unsmooth due to material bonding or hardening is avoided.

A flexible connecting structure 28 is arranged between the blanking port 23 of the gravity weighing and metering hopper 22 and the bag clamping device 26, an air cylinder 25 is mounted on the flexible connecting structure 28, an air cylinder support 27 for the air cylinder 25 is mounted on the flexible connecting structure 28, and the bag clamping device 26 is mounted at the lower port of the flexible connecting structure 28.

The materials pass through the flexible connecting structure 28, and the materials in the gravity weighing hopper 22 are all conveyed into a packaging bag under the action of the air cylinder 25.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention as defined in the appended claims.