Material feeding metering device

Abstract

The present invention discloses a material feeding and metering device, belonging to the field of material feeding and metering. The device comprises at least one volume target hopper and a plurality of micro-supply hoppers, a reciprocating translational silo for filling the volume target hopper and the micro-supply hopper with materials is arranged above the volume target hopper and the micro-supply hopper, a first control panel that can be opened and closed is arranged at the material outlet of the volume target hopper and the micro-supply hopper, a weighing and metering hopper is arranged below the material outlet of the volume target hopper and the micro-supply hopper, a first weighing sensor is arranged on the weighing and metering hopper, a second control panel that can be opened and closed is arranged at the material outlet of the weighing and metering hopper, and a bag clamping device for clamping a packaging bag is arranged below the material outlet of the weighing and metering hopper. When the present invention performs bagging of materials, the material is fed through the volume target hopper, and the material in the plurality of micro-supply hoppers is added and adjusted to the material fed to the volume target hopper, and finally a weight closest to the target value is formed, thereby improving the feeding accuracy and speed.

Description

Technical Field

[0001] The invention relates to the field of material feeding metering, in particular to a material feeding metering device. Background Art

[0002] When powder, granular and small block materials are packaged in bags, feeding metering is required. Existing feeding metering devices include spiral feeding, vibration feeding, scraper conveying feeding, gravity feeding and the like. However, none of the above feeding methods can achieve accurate metering, resulting in the inability to accurately control the weight of each bag of product during bag packaging. Summary of the invention

[0003] The invention provides a material feeding metering device, which improves the feeding accuracy.

[0004] The present invention provides the following technical solutions:

[0005] A material feeding metering device comprises at least one volume target hopper and a plurality of micro-supply hoppers, wherein:

[0006] A reciprocating translational silo for filling materials for the volume target hopper and the micro-supply hopper is arranged above the volume target hopper and the micro-supply hopper, a first control panel that can be opened and closed is arranged at the material outlet of the volume target hopper and the micro-supply hopper, a weighing and metering hopper is arranged below the material outlet of the volume target hopper and the micro-supply hopper, a first weighing sensor is arranged on the weighing and metering hopper, a second control panel that can be opened and closed is arranged at the material outlet of the weighing and metering hopper, and a bag clamping device for clamping a packaging bag is arranged below the material outlet of the weighing and metering hopper;

[0007] The total weight of materials contained in all volume target buckets is less than or equal to the rated weight of the packaging bag, and the total weight of materials contained in all volume target buckets and all micro-replenishment buckets is greater than the rated weight of the packaging bag;

[0008] The first weighing sensor is connected to the controller, the weighing and metering hopper receives the material dropped from the volume target hopper and performs the first weighing of the material in the weighing and metering hopper through the first weighing sensor, the controller calculates the first difference according to the rated weight of the packaging bag and the weight of the material in the weighing and metering hopper weighed for the first time, the controller finds the first combination of micro-replenishing hoppers according to the first difference, the sum of the weights of the materials contained in the first combination of micro-replenishing hoppers is closest to the first difference, the first control panel of the first combination of micro-replenishing hoppers is opened, and the material is replenished into the weighing and metering hopper through the first combination of micro-replenishing hoppers.

[0009] Furthermore, after the material is replenished into the weighing and metering hopper through the first combination of the micro-replenishing hopper, the second control panel is opened to allow the material in the weighing and metering hopper to fall into the packaging bag;

[0010] Alternatively, after the material is replenished into the weighing and metering hopper through the first combination of the micro-replenishing hoppers, the material in the weighing and metering hopper is weighed for a second time through the first weighing sensor; the controller calculates a second difference based on the rated weight of the packaging bag and the weight of the material in the weighing and metering hopper weighed for the second time. If the second difference is within the maximum allowable error range of the packaging bag, the second control panel is opened to allow the material in the weighing and metering hopper to fall into the packaging bag. Otherwise, the controller finds the second combination of micro-replenishing hoppers based on the second difference, the sum of the weights of the materials contained in the second combination of micro-replenishing hoppers is closest to the second difference, the first control panel of the second combination of micro-replenishing hoppers is opened, and the material is replenished into the weighing and metering hopper through the second combination of the micro-replenishing hoppers.

[0011] Furthermore, a receiving container is provided below the discharge port of the micro-replenishment hopper, a second weighing sensor is provided on the receiving container, and the receiving container is connected to a driving device for driving the receiving container to discharge materials.

[0012] Furthermore, a raw material bin is arranged above the reciprocating translational bin, and the raw material bin and the reciprocating translational bin are connected via a first soft connection structure.

[0013] Furthermore, the volume target hopper, micro-replenishment hopper and raw material bin are installed on the main frame, one end of the first weighing sensor is set on the main frame, and the other end is connected to the weighing and metering hopper, and one end of the second weighing sensor is set on the main frame, and the other end is connected to the receiving container.

[0014] Furthermore, the weight of the materials contained in the several micro-replenishing buckets increases from small to large according to a set multiple, and the weight of the material contained in the smallest micro-replenishing bucket is half of the maximum allowable error range of the packaging bag; wherein the set multiple is greater than one and less than or equal to two.

[0015] Furthermore, the weight of the materials contained in the plurality of micro-replenishment buckets increases by two times from small to large.

[0016] Furthermore, the volume target bucket and the micro-replenishment bucket both include an inner tube and an outer tube located below the inner tube and sleeved on the outer circumference of the inner tube. The inner tube and the outer tube can be adjusted in the up and down directions, and a sealing rubber ring is provided between the inner tube and the outer tube.

[0017] Furthermore, an adjusting ring is provided on the outer tube, and the adjusting ring is sleeved on the adjusting column, and a locking bolt for locking the position of the adjusting ring is provided on the adjusting column.

[0018] Furthermore, the reciprocating translation silo is installed on a slideway via a pulley, and reciprocates along the slideway under the drive of a cylinder.

[0019] Furthermore, a second soft connection structure is provided between the material discharge port of the weighing and metering hopper and the bag clamping device; and the first control board and the second control board are driven by a cylinder.

[0020] The present invention has the following beneficial effects:

[0021] When the present invention performs bag packaging of materials, materials are fed through a volume target bucket, and the materials in a plurality of micro-supplement buckets are added and adjusted to the feeding of the volume target bucket, and finally a weight closest to the target value is formed, thereby improving the accuracy and speed of feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a front view of the material feeding and metering device of the present invention;

[0023] Figure 2 It is a side view of the material feeding and metering device of the present invention;

[0024] Figure 3 It is a top view of the material feeding and metering device of the present invention;

[0025] Figure 4 This is the front view of the volume target bucket / micro-replenishment bucket;

[0026] Figure 5 It is the right view of the volume target bucket / micro-replenishment bucket;

[0027] Figure 6 This is a schematic diagram of the receiving container. DETAILED DESCRIPTION

[0028] In order to make the technical problems, technical solutions and advantages to be solved by the present invention more clear, a detailed description will be given below with reference to the accompanying drawings and specific embodiments.

[0029] The embodiment of the present invention provides a material feeding metering device, such as Figure 1-6 As shown, it includes at least one volume target bucket 9 and a plurality of micro-replenishment buckets 10, and the volume target bucket 9 and the micro-replenishment bucket 10 are installed on the main frame 1, wherein:

[0030] A reciprocating translational silo 4 for filling materials for the volume target hopper 9 and the micro-replenishing hopper 10 is arranged above the volume target hopper 9 and the micro-replenishing hopper 10, and a first control panel 14 that can be opened and closed is arranged at the material outlet of the volume target hopper 9 and the micro-replenishing hopper 10. The first control panel 14 is driven to open and close by a cylinder 15, and the cylinder 15 is installed on the main frame 1 through a cylinder bracket 16.

[0031] A weighing and metering hopper 23 is arranged below the drop opening of the volume target hopper 9 and the micro-replenishment hopper 10. A first weighing sensor is arranged on the weighing and metering hopper 23. One end of the first weighing sensor is arranged on the main frame 1, and the other end is connected to the weighing and metering hopper 23 for measuring the weight of the material in the weighing and metering hopper 23.

[0032] A second control panel 30 that can be opened and closed is provided at the discharge port 24 of the weighing and metering hopper 23 . The second control panel 30 is driven to open and close by the cylinder 25 . A bag clamping device 27 for clamping the packaging bag is provided below the discharge port 24 of the weighing and metering hopper 23 .

[0033] The aforementioned volume target bucket may be one or more, for example, two, etc. The attached drawings of the present invention take one volume target bucket as an example for explanation. The total weight of the materials contained in all volume target buckets 9 is less than or equal to the rated weight of the packaging bag, and the total weight of the materials contained in all volume target buckets 9 and all micro-replenishment buckets 10 is greater than the rated weight of the packaging bag.

[0034] When the present invention is in use, the material enters the reciprocating translation silo 4, and the reciprocating translation silo 4 is translated to the top of the volume target bucket 9 and the micro-supply bucket 10 under the action of power, and the material is filled from the reciprocating translation silo 4 into the volume target bucket 9 and the micro-supply bucket 10. When the volume target bucket 9 and the micro-supply bucket 10 are filled with the material, the reciprocating translation silo 4 is moved away under the action of power, and the material in the reciprocating translation silo 4 is separated from the volume target bucket 9 and the micro-supply bucket 10. The reciprocating translation silo 4 translates for one cycle, and the volume target bucket 9 and the micro-supply bucket 10 are filled once.

[0035] The first control panel 14 of the volume target bucket 9 is opened, so that the material in the volume target bucket 9 directly falls into the weighing and metering hopper 23 through the drop opening of the volume target bucket 9 , and the weighing and metering hopper 23 receives the material falling from the volume target bucket 9 .

[0036] The first weighing sensor is connected to the controller, and the material in the weighing and metering hopper 23 is weighed for the first time through the first weighing sensor. The controller calculates the first difference according to the rated weight of the packaging bag and the weight of the material in the weighing and metering hopper 23 weighed for the first time. The controller finds the first combination of the micro-replenishing hopper 10 according to the first difference, and the sum of the weights of the materials contained in the first combination of the micro-replenishing hopper 10 is closest to the first difference. The first control panel 14 of the first combination of the micro-replenishing hopper 10 is opened, and the material is replenished into the weighing and metering hopper 23 through the first combination of the micro-replenishing hopper 10. The difference between the material in the weighing and metering hopper 23 and the rated weight of the packaging bag is replenished by the number of the combination of each weight in the micro-replenishing hopper 10 that is closest to the difference, so that the final measurement number is closest to the set target value (i.e., the rated weight of the packaging bag).

[0037] Taking four micro-replenishment buckets as an example, assuming that the rated weight of the packaging bag is 10 kg, the volume target bucket contains 9.98 kg of material, and the weights of the materials in the micro-replenishment buckets are 0.01, 0.02, 0.04, and 0.08 kg, respectively. Then the difference of 0.02 kg is directly made up by the 0.02 kg material in the micro-replenishment bucket; if the volume target bucket contains 9.97 kg of material, then the material is made up by the combined weight of two micro-replenishment buckets weighing 0.01 kg and 0.02 kg; if the volume target bucket contains 9.95 kg of material, then the material is made up by the combined weight of two micro-replenishment buckets weighing 0.01 kg and 0.04 kg.

[0038] After the bag clamping device 27 receives the bagging signal, the bag clamping port is opened, the second control panel 30 is opened, and all the materials in the weighing and metering hopper 23 are sent to the packaging bag, and then enter the next packaging link, and so on.

[0039] When the present invention performs bagging of materials, materials are fed through a volume target bucket, and the materials in a plurality of micro-supplement buckets are added and adjusted to the feeding of the volume target bucket, and finally a weight closest to the target value is formed, thereby improving the accuracy and speed of feeding.

[0040] As described above, after the material is replenished into the weighing and metering hopper 23 through the first combination of the micro-replenishing hopper 10, the second control panel 30 can be opened to allow the material in the weighing and metering hopper 23 to fall into the packaging bag.

[0041] Alternatively, after the material is replenished into the weighing and metering hopper through the first combination of the micro-replenishing hopper, the second control panel 30 is not opened directly, but the material in the weighing and metering hopper 23 is weighed again, and the material is replenished again through the micro-replenishing hopper according to the weighing result, so that the metering accuracy can be improved, as follows:

[0042] The material in the weighing and metering hopper 23 is weighed for the second time through the first weighing sensor; the controller calculates the second difference according to the rated weight of the packaging bag and the weight of the material in the weighing and metering hopper 23 weighed for the second time. If the second difference is within the maximum allowable error range of the packaging bag, the second control panel is opened to allow the material in the weighing and metering hopper 23 to fall into the packaging bag. Otherwise, the controller finds the second combination of micro-replenishing hoppers 10 according to the second difference, and the sum of the weights of the materials contained in the second combination of micro-replenishing hoppers 10 is closest to the second difference. The first control panel 14 of the second combination of micro-replenishing hoppers 10 is opened to replenish the material into the weighing and metering hopper 23 through the second combination of micro-replenishing hoppers 10.

[0043] To further improve the accuracy, a receiving container 20 is arranged below the drop port of the micro-replenishing hopper 10, and a second weighing sensor 21 is arranged on the receiving container 20. The second weighing sensor 21 is installed on a sensor bracket 22. One end of the sensor bracket 22 is arranged on the main frame 1, and the other end is connected to the receiving container 20 for measuring the weight of the material in the receiving container 20.

[0044] The receiving container 20 is connected to a driving device for driving the receiving container 20 to unload. The driving device may be, for example, a cylinder or a motor. The cylinder or the motor controls the receiving container 20 to rotate 180 degrees to achieve unloading.

[0045] The material in the micro-replenishment hopper 10 first falls into the receiving container 20 and is weighed by the second weighing sensor 21 , and then the receiving container 20 is driven by the driving device to unload the material, so that the accurately measured material falls into the weighing and metering hopper 23 .

[0046] To facilitate feeding, a raw material bin 2 is provided above the reciprocating translation bin 4 . The raw material bin 2 is mounted on the main frame 1 . The raw material bin 2 and the reciprocating translation bin 4 are connected via a first soft connection structure 3 .

[0047] The material is poured into the raw material bin 2 , and the material passes through the raw material bin 2 and the first soft connection structure 3 into the reciprocating translation bin 4 .

[0048] In the present invention, the capacity of the volume target bucket 9 is determined according to the rated weight of the packaging bag, and the weight of the materials contained in the several micro-replenishment buckets 10 increases from small to large according to the set multiples, and the weight of the material contained in the smallest micro-replenishment bucket 10 is half of the maximum allowable error range of the packaging bag; wherein the set multiple is greater than one times and less than or equal to two times, for example, 1.8 times, 1.9 times, 2 times, etc.

[0049] Preferably, the multiple is set to be two times, and the weight of the materials contained in the plurality of micro-replenishment buckets increases by two times from small to large.

[0050] The volume target bucket 9 and the micro-replenishment bucket 10 of the present invention are adjustable in capacity. Both the volume target bucket 9 and the micro-replenishment bucket 10 include an inner tube 11 and an outer tube 12 located below the inner tube 11 and sleeved on the outer periphery of the inner tube 11. The inner tube 11 and the outer tube 12 can be adjusted in the up and down directions to achieve adjustable capacity of the volume target bucket 9 and the micro-replenishment bucket 10. A sealing rubber ring 13 is provided between the inner tube 11 and the outer tube 12.

[0051] An adjusting ring 17 is provided on the outer tube 12 . The adjusting ring 17 is sleeved on an adjusting column 18 . The adjusting column 18 is mounted on the main frame 1 . A locking bolt 19 for locking the position of the adjusting ring 17 is provided on the adjusting column 18 .

[0052] In order to realize the translation of the reciprocating translation silo, the reciprocating translation silo 4 is installed on the slideway 6 through the pulley 5, and reciprocates along the slideway under the drive of the cylinder 8, and the cylinder 8 is installed on the main frame 1 through the cylinder bracket 7.

[0053] A second flexible connection structure 29 is provided between the discharge port 24 of the weighing and metering hopper 23 and the bag clamping device 27 , on which a cylinder 26 is mounted, and the cylinder 26 is mounted on the second flexible connection structure 29 by a cylinder bracket 28 , and a bag clamping device 27 is installed at the lower port of the second flexible connection structure 29 .

[0054] The material passes through the second flexible connection structure 29 , and under the action of the cylinder 26 , all the material in the gravity weighing metering hopper 23 is delivered to the packaging bag.

[0055] The above is a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the scope of protection of the present invention.

Claims

1. A material feeding metering device, characterized in that: It includes at least one volume target hopper and a plurality of micro-replenishment hoppers, wherein: A reciprocating translational silo for filling materials for the volume target hopper and the micro-supply hopper is arranged above the volume target hopper and the micro-supply hopper, a first control panel that can be opened and closed is arranged at the material outlet of the volume target hopper and the micro-supply hopper, a weighing and metering hopper is arranged below the material outlet of the volume target hopper and the micro-supply hopper, a first weighing sensor is arranged on the weighing and metering hopper, a second control panel that can be opened and closed is arranged at the material outlet of the weighing and metering hopper, and a bag clamping device for clamping a packaging bag is arranged below the material outlet of the weighing and metering hopper; The total weight of materials contained in all volume target buckets is less than or equal to the rated weight of the packaging bag, and the total weight of materials contained in all volume target buckets and all micro-replenishment buckets is greater than the rated weight of the packaging bag; The first weighing sensor is connected to the controller, the weighing and metering hopper receives the material dropped from the volume target hopper and performs the first weighing of the material in the weighing and metering hopper through the first weighing sensor, the controller calculates the first difference according to the rated weight of the packaging bag and the weight of the material in the weighing and metering hopper weighed for the first time, the controller finds the first combination of micro-replenishing hoppers according to the first difference, the sum of the weights of the materials contained in the first combination of micro-replenishing hoppers is closest to the first difference, the first control panel of the first combination of micro-replenishing hoppers is opened, and the material is replenished into the weighing and metering hopper through the first combination of micro-replenishing hoppers; After the material is replenished into the weighing and metering hopper through the first combination of the micro-replenishing hoppers, the material in the weighing and metering hopper is weighed for the second time through the first weighing sensor; the controller calculates the second difference according to the rated weight of the packaging bag and the weight of the material in the weighing and metering hopper weighed for the second time, and if the second difference is within the maximum allowable error range of the packaging bag, the second control panel is opened to allow the material in the weighing and metering hopper to fall into the packaging bag; otherwise, the controller finds the second combination of the micro-replenishing hoppers according to the second difference, the sum of the weights of the materials contained in the second combination of the micro-replenishing hoppers is closest to the second difference, the first control panel of the second combination of the micro-replenishing hoppers is opened, and the material is replenished into the weighing and metering hopper through the second combination of the micro-replenishing hoppers; The reciprocating translation silo is installed on a slideway through a pulley, and reciprocates along the slideway under the drive of a cylinder.

2. The material feeding metering device according to claim 1, characterized in that: A receiving container is arranged below the discharge port of the micro-replenishment hopper, the receiving container is located above the weighing and metering hopper, a second weighing sensor is arranged on the receiving container, and the receiving container is connected to a driving device for driving the receiving container to discharge materials.

3. The material feeding metering device according to claim 2, characterized in that: A raw material bin is arranged above the reciprocating translation bin, and the raw material bin and the reciprocating translation bin are connected via a first soft connection structure.

4. The material feeding metering device according to claim 3, characterized in that: The volume target hopper, micro-replenishment hopper and raw material bin are installed on the main frame, one end of the first weighing sensor is set on the main frame, and the other end is connected to the weighing and metering hopper, and one end of the second weighing sensor is set on the main frame, and the other end is connected to the receiving container.

5. The material feeding metering device according to claim 1, characterized in that: The weight of the materials contained in the several micro-replenishment buckets increases from small to large according to a set multiple, and the weight of the materials contained in the smallest micro-replenishment bucket is half of the maximum allowable error range of the packaging bag; wherein the set multiple is greater than one and less than or equal to two.

6. The material feeding metering device according to claim 5, characterized in that: The weight of the materials contained in the plurality of micro-replenishment buckets increases by two times from small to large.

7. The material feeding metering device according to claim 1, characterized in that: The volume target bucket and the micro-replenishment bucket both include an inner tube and an outer tube located below the inner tube and sleeved on the outer periphery of the inner tube. The inner tube and the outer tube can be adjusted in the up and down directions, and a sealing rubber ring is provided between the inner tube and the outer tube.

8. The material feeding metering device according to claim 7, characterized in that: The outer tube 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.

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