CN210437480U

CN210437480U - High-speed accurate racking machine

Info

Publication number: CN210437480U
Application number: CN201921086601.3U
Authority: CN
Inventors: 李正辉; 李豪刚; 李宝婕; 李国清
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-07-10
Filing date: 2019-07-10
Publication date: 2020-05-01
Anticipated expiration: 2029-07-10

Abstract

The utility model discloses a high-speed accurate racking machine, which comprises a plurality of weighing units and a plurality of loading units, wherein each weighing unit comprises a feeding mechanism and a weighing mechanism; the feeding mechanism comprises a charging hopper and a plurality of spiral feeding rods with different sizes; the weighing mechanism comprises a weighing hopper and a weighing module, and the weighing hopper is arranged below a feeding port of the feeding mechanism; the material loading unit is positioned below the weighing unit and comprises a material bag for packaging materials; the middle transition hopper is arranged between the weighing hoppers and the material bag, the feed openings of the weighing hoppers extend into the upper opening of the middle transition hopper, and the discharging control mechanism for controlling the opening and the closing of the feed openings is arranged on the weighing hoppers. The utility model discloses precision, rate of accuracy, stability and the production efficiency of partial shipment material have been improved greatly to will bring huge social in many-sided energy saving and consumption reduction, material resources of using manpower sparingly, environmental protection safety etc..

Description

High-speed accurate racking machine

Technical Field

The utility model relates to a material partial shipment equipment, concretely relates to high-speed accurate racking machine.

Background

In production and life, the powdered materials, such as industrial raw materials, foods, medicines and the like, are frequently required to be subpackaged. The partial shipment of material is accomplished by the partial shipment equipment, and at the partial shipment in-process, the material carries out quantitative partial shipment according to the weight usually, and consequently the weight accuracy and the stability of partial shipment are the important index of aassessment partial shipment equipment performance, especially in the drug production field, not only will carry out strict control on the preparation technology of medicine, produce the medicine of quality passing through, owing to have strict requirement to the medicine quantity, still will guarantee that the weight of medicine after the partial shipment bagging-off accords with the precision of regulation.

In the existing subpackaging equipment, a spiral feeder is generally adopted as a feeding mechanism to push materials to a weighing device or a material bag; wherein, based on the blade size parameter and the helix angle of the hob in the screw feeder, can obtain the material volume of the propelling movement forward that corresponds when its unit angle of rotation, the density of the material of reunion propelling movement can learn the turned angle of hob and the relation of the weight of the material of propelling movement forward, and then adjusts the single feed volume of hob according to the bagging-off weight of regulation, realizes the partial shipment. For example, the utility model with the authorization notice number of CN 207208616U discloses a screw rod type bulk traditional Chinese medicine sorting device. What above-mentioned partial shipment equipment adopted is that "volumetric method" carries out quantitative partial shipment, and its not enough of existence lies in, because the density of material can receive the influence of environmental factor such as air humidity and material mesh number, screw rod rotational speed pressure, consequently can lead to according to fixed volume partial shipment material time, has undulant change to lead to weight to appear great fluctuation because of the density of material, and the weight precision and the stability of the material of partial shipment are all not good.

In order to make the weight of the materials of the subpackage more accurate, a weighing method is adopted to subpackage the materials in the prior art, the subpackage equipment also adopts a spiral feeder as a feeding mechanism, the materials in the subpackage process are weighed in real time, and the feeding is stopped when the materials of the subpackage reach the set weight. For example, the utility model with the publication number CN 204730919U discloses "a weighing apparatus", which obtains a higher weight accuracy, but still has the disadvantages: the split charging equipment is only provided with one screw rod, so that the weighing efficiency and the weighing accuracy are difficult to be considered simultaneously, namely when the adopted screw rod has larger blades, the weighing efficiency is high (feeding is fast), but a small amount of material is difficult to be accurately pushed out, and the conveying amount of the material is difficult to be accurately controlled at the last moment of split charging and weighing; on the contrary, when the screw rod is used and has smaller blades, although the material with lighter weight can be more accurately pushed out, the weighing efficiency is lower.

In order to solve the problem, the utility model discloses a "feeding device is weighed to two spiral quick accuracy that grant publication number is CN 203845039U", the device adopts big helical screw and little helical screw to carry out the pay-off, and quick pay-off is accomplished to big helical screw, stops when being close to weighing the terminal point, accomplishes the accurate interpolation and the weighing of surplus material by little helical screw, has guaranteed speed and degree of accuracy simultaneously. However, the following disadvantages still exist: the device during operation carries the material on one side and weighs, and the partial shipment is accomplished to the back material that finishes of weighing, because the transport of the in-process material of weighing need experience fast and two stages at a slow speed, consequently the time of accomplishing the partial shipment of once weighing is longer, and production efficiency is not high.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the problem that above-mentioned exists, provide a high-speed accurate racking machine, this racking machine not only the precision of weighing is high, and stability is good, and has improved efficiency greatly.

The purpose of the utility model is realized through the following technical scheme:

a high-speed accurate racking machine comprises a weighing unit for weighing materials and a charging unit for bagging the weighed materials;

the device comprises a plurality of weighing units, a weighing unit and a control unit, wherein each weighing unit comprises a feeding mechanism and a weighing mechanism; the feeding mechanism comprises a charging hopper for charging and a plurality of spiral feeding rods which are arranged at the lower part of the charging hopper and have different sizes; the weighing mechanism comprises a weighing hopper and a weighing module for measuring the weight of the weighing hopper and the weight of materials in the hopper, and the weighing hopper is arranged below a feeding port of the feeding mechanism;

the loading unit is positioned below the weighing unit and comprises a material bag for packaging materials and a bag opening mechanism for supporting the material bag and opening the opening of the material bag;

a middle transition hopper is arranged between the weighing hoppers and the material bag, the feed openings of the weighing hoppers extend into the upper opening of the middle transition hopper, and the weighing hoppers are provided with discharge control mechanisms for controlling the opening and closing of the feed openings; the opening of the material bag is opposite to the discharge hole of the middle transition hopper.

The working principle of the high-speed accurate racking machine is as follows:

the during operation, the material is carried to the charging hopper in advance, during the partial shipment, the spiral feeding rod begins to rotate, and to the direction propelling movement material of pay-off mouth, with material propelling movement to the weighing hopper on, the real-time weighing hopper of weighing module is weighed to feed back weight data to backstage control system, compare the weight data who obtains with predetermined weight by backstage control system, and control a plurality of (two or more) spiral feeding rod's rotation, make the weight of material be close to the weight of regulation gradually. Assuming that the weight of the material weighing is 1000g, three spiral feeding rods are arranged in the feeding mechanism and correspond to pushing weight levels of 100g, 10g and 1g respectively, and the maximum error values are 10g, 1g and 0.1g respectively; the method comprises the following steps that firstly, 100g of spiral feeding rods push the materials, then 10g of spiral feeding rods push the materials, when the real-time weight difference of weight targets is smaller than or equal to 10g, 1g of spiral feeding rods are selected, and the weight difference is gradually reduced until the weight difference is smaller than 0.1 g; in the weighing process, the spiral feeding rods with large order of magnitude are used for pushing firstly, and then the spiral feeding rods with small order of magnitude are used for pushing gradually, so that high weighing efficiency is guaranteed, the weighing error can be reduced gradually, the weight of the weighed materials is further close to the specified weight, and the qualified rate of the packaged materials is improved. After weighing, the material enters the middle transition hopper through the feed opening of the weighing hopper, and then falls into the material bag through the discharge opening of the middle transition hopper, so that the material bag is packaged and other treatment processes.

Specifically, in the process of weighing the material, the material needs to be pushed by a multi-stage screw to obtain accurate weighing degree, so that the time consumption of the weighing process is long; the weighed materials are directly poured into the material bag below from the weighing hopper through the middle transition hopper, the time consumption is short, and the sealing of the material bag can be quickly finished, so that when one-time subpackaging is finished, the weighing unit can finish the weighing of the next material after a long time, and the next material is already waiting below the middle transition hopper; that is, the length of the weighing time is a main factor that limits the efficiency of the dispensing to be difficult to improve in each packaging work. Therefore, in order to ensure that the weighing time is not a limiting factor of the subpackaging efficiency, a plurality of weighing units can be arranged according to the requirements of actual conditions; for example, when the number of the weighing units is two, the first weighing unit and the second weighing unit simultaneously perform weighing work, when the first weighing unit puts the weighed materials into the material bag, the next batch of materials are immediately weighed, and after the material bag below is replaced (the first weighing unit does not finish weighing yet), the second weighing unit can put the weighed materials into the next replaced material bag and then weigh the next batch of materials; after the next material bag is replaced, replacing the first weighing unit to put the weighed materials into the material bag; like this, first weighing unit and second weigh the unit and throw the material in turn, reducible material bag's latency improves the efficiency of partial shipment effectively. Furthermore, in the practical application process, the weighing units with corresponding quantity can be set according to the time of specific material bag replacement (sealing and transportation), and the weighing units weigh and feed time, so that the time of waiting for weighing by the weighing units is reduced as much as possible, namely, before or while the material bags are replaced, the weighing units also finish weighing work, and the material bags which are replaced can be directly bagged without waiting.

By arranging the middle transition hopper, when the weighing module finishes the measurement of the weighing hopper, the materials in the middle transition hopper can be discharged into the middle transition hopper for bagging; wherein, before the bagging-off or in-process, feeding mechanism can carry out next work of weighing again with material propelling movement to weighing on fighting, need not to wait to last bagging-off work and accomplish, can improve the efficiency of partial shipment by several times like this.

The utility model discloses a preferred scheme, wherein, the feeding mechanism is the volume metering type feeding mechanism that adopts the volume method to carry out primary metering, and the volume metering type feeding mechanism also comprises a feeding driving motor that provides feeding power for the spiral feeding rod; in a single feeding operation of the spiral feeding rod, the total angle of the rotation of the spiral feeding rod driven by the feeding driving motor is equal to the target weight value of the primary metering divided by the material density and then divided by the volume of the conveyed material when the spiral feeding rod rotates by a unit angle; the spiral feeding rod is obliquely arranged at the lower end of the charging hopper, and one end provided with the feeding port is higher than one end connected with the feeding driving motor. The above-mentioned benefit that sets up to the slope lies in, can ensure that the material only just sees off from the pay-off mouth under the drive of spiral pay-off pole, can avoid authorizing the problem that exists in the utility model discloses a "weighing equipment" that bulletin number is CN 204730919U effectively: because the screw rod is horizontally arranged, when the material moves along with the blades to the feeding port, only the material across the feeding port can fall down under the action of the gravity of the material under normal conditions; however, in the actual use process, because the materials are powder or granular and are stacked in the screw rod, the rigidity of the materials is very low, the materials (not required for weighing) which are close to the feeding port but do not span the feeding port are easy to collapse and fall down along with the materials (required for weighing) which span the feeding port in front, and thus errors exist in the weight of the materials. In this preferred scheme, the slope of pay-off mouth sets up, and the gravity of material self makes it stop on the screw feeding pole all the time (stride the material of pay-off mouth except), is close to the pay-off mouth like this but not striding the material (the non-needs of weighing) of pay-off mouth and can not drop down along with the place ahead strides the material (the needs of weighing) of pay-off mouth to can not influence the weighing precision of material.

The utility model discloses a preferred scheme, wherein, the feeding mechanism still includes the pay-off complementary unit that is used for stirring the material in the charging hopper, and this pay-off complementary unit includes stirring rod and the stirring driving motor that drives stirring rod and rotate; the stirring rod is arranged above the spiral feeding rod. Through above-mentioned structure, can stir the material in the charging hopper for the material is in not hard up state, and the material of being convenient for falls on the screw feeding rod, thereby guarantees screw feeding rod pivoted propelling movement volume at every turn.

The utility model discloses a preferred scheme, wherein, the weighing unit is three, and wherein, three screw feeding rod is arranged along vertical direction, and the distance that is located the pay-off mouth of the screw feeding rod of top to the charging hopper is than the distance that is located the pay-off mouth of the screw feeding rod of below to the charging hopper far away.

The utility model discloses a preferred scheme, wherein, weighing unit is three, and wherein, three spiral feed rod is arranged along the horizontally direction.

The utility model discloses a preferred scheme, wherein, it is three to weigh the unit, and wherein, three spiral pay-off pole is triangle-shaped and arranges.

The utility model discloses a preferred scheme, wherein, still including the bagging-off actuating mechanism who is used for transition hopper or/and material bag to do vertical lift removal in the middle of the drive.

Preferably, still including being used for driving in the middle of transition hopper and making vertical lift removal's bagging-off actuating mechanism, before the bagging-off, the discharge gate of middle transition hopper is located the bottom of material bag inner chamber, and when material got into the material bag through middle transition hopper, along with piling up of material, bagging-off actuating mechanism drove in the middle of transition hopper up-moving gradually. Generally, in the existing bagging process, a material bag is placed below a middle transition hopper, and a discharge port of the material bag is aligned with the material bag; wherein, because the discharge gate of middle transition hopper has the take the altitude apart from the bottom of material bag, at the in-process of unloading, powder or graininess material get into in the material bag with the uniform velocity, replace the air in the material bag and come out, wherein, the air that the replacement was come out can collide on the material that is going into the material bag down, thereby can produce great raise dust, so not only can pollute peripheral environment, and can cause the waste of material, more importantly can cause the weight of bagging-off material unstable, it is not accurate, to the product loading degree of accuracy requirement high as the medicine, influence such as standard article is very big. In the optimization, the bagging driving mechanism is arranged, before bagging, the bagging driving mechanism drives the middle transition hopper to move downwards to be close to the material bag to be bagged, and the gap between the discharge hole of the middle transition hopper and the bottom of the material bag is reduced as much as possible; in the in-process of bagging-off, along with piling up of material, transition hopper up removal in the middle of bagging-off actuating mechanism slowly drives, and the discharge gate that keeps middle transition hopper simultaneously does not need too big with the clearance of the bottom of material bag, and then has avoided the raise dust effectively. The optimal scheme is not the traditional 'soup raising and boiling stopping' technology, but the 'kettle bottom firewood pumping' technology, and can really solve the technical problem which is not solved all the time.

Preferably, the lower end of the middle transition hopper is provided with an opening and closing structure for controlling the opening and closing of the middle transition hopper; the middle transition hopper moves up and down under the driving of the bagging driving mechanism, and when the middle transition hopper rises to the highest point, the bottom of the inner cavity of the middle transition hopper reaches the discharge opening of the weighing hopper; in the process that the middle transition hopper moves from the highest point to the lowest point, the bottom of the inner cavity of the middle transition hopper is gradually far away from the feed opening of the weighing hopper to provide a containing space for materials released from the feed opening; when the middle transition hopper descends to the lowest point, the discharge hole of the middle transition hopper reaches the bottom of the inner cavity of the material bag; in the process that the middle transition hopper gradually moves from the lowest point to the highest point, the opening and closing structure is opened, so that the materials are gradually released into the material bag; when the middle transition hopper rises to the highest point, all the materials of the middle transition hopper are released into the material bag, then the opening and closing structure is closed, and at the moment, the bottom of the inner cavity of the middle transition hopper returns to the feed opening of the weighing hopper.

Preferably, the lower end of the middle transition hopper is provided with a material guide pipe, and the lower port of the material guide pipe is the material outlet; an inner support piece for supporting materials is arranged in the material guide pipe, a supporting driving mechanism for driving the inner support piece to move up and down in the material guide pipe is arranged above the inner support piece, and the supporting driving mechanism comprises a supporting driving piece and a driving rod arranged between the driving end of the supporting driving piece and the inner support piece; the opening and closing structure comprises an inner support piece and a blanking section, wherein the inner support piece is provided with a conical bearing surface which is declined towards the outer side, and the circumferential side surface of the inner support piece is attached to the inner wall of the material guide pipe; the blanking section is connected to the bottom end of the material guide pipe, and the diameter of the inner cavity of the blanking section is larger than that of the inner cavity of the material guide pipe. When the inner supporting piece is positioned in the blanking section, a blanking gap is arranged between the inner supporting piece and the blanking section; before the materials of the bearing hopper enter the middle transition hopper, the bearing driving piece drives the inner support piece to move to the top of the material guide pipe, after the materials enter the middle transition hopper, the materials at the bottom end are supported on the inner support piece, and the bearing driving piece drives the inner support piece to move downwards so that the printing materials above enter the material guide pipe and move downwards; before bagging, the inner supporting piece supports the material to move downwards to the discharge port of the material guide pipe, and the bagging driving mechanism drives the discharge port of the middle transition hopper to reach the bottom of the inner cavity of the material bag.

Further, bagging-off actuating mechanism includes lift driving motor and lift drive assembly, lift drive assembly includes lead screw and screw-nut, screw-nut connects on lift driving motor's output shaft, lift driving motor fixes in the frame of equipment, the lead screw passes through crane and middle transition hopper fixed connection. In addition, the lifting transmission assembly can also be composed of a gear rack transmission assembly.

Preferably, still including being used for driving animal material bag and making vertical lift removal's bagging-off actuating mechanism, before the bagging-off, the discharge gate of middle transition hopper is located the bottom of material bag inner chamber, and when the material got into the material bag through middle transition hopper, along with piling up of material, bagging-off actuating mechanism driven material bag down moved gradually. Before bagging, the bagging driving mechanism drives the material bag to be bagged to be upward close to the discharge hole of the middle transition hopper, so that a gap between the discharge hole of the middle transition hopper and the bottom of the material bag is reduced as much as possible; in the bagging process, along with the accumulation of materials, the bagging driving mechanism slowly drives the animal material bag to move downwards, and meanwhile, the gap between the discharge hole of the middle transition hopper and the bottom of the material bag is kept not too large, so that dust raising is effectively avoided.

Further, bagging-off actuating mechanism includes lift driving motor and lift drive assembly, lift drive assembly includes lead screw and screw-nut, lift driving motor fixes in the frame of equipment, screw-nut passes through crane and material bag fixed connection. In addition, the lifting transmission assembly can also be composed of a gear rack transmission assembly.

The utility model discloses a preferred scheme, wherein, still include the dust collecting device that is used for collecting the raise dust that produces in the process of feeding, this dust collecting device includes the dust bag that is used for collecting the raise dust, is used for leading the raise dust into the dust collecting pipe of dust bag and is used for drawing the raise dust into the air exhauster in the dust bag;

wherein, the dust collecting bag is densely provided with air outlet holes for filtering dust discharged from the material container; the dust collecting pipe comprises a main inlet pipe and a branch inlet pipe, and the exhaust fan is arranged on the main inlet pipe; one end of the main inlet pipe is communicated with the dust collection bag, and the other end of the main inlet pipe is communicated with the branch pipes; the branch advances the pipe and is a plurality of, and a plurality of branch advances the pipe and extends to in different material container respectively. Specifically, the dust bag can be through the dust collecting tube with divide the pipe to communicate with different material container respectively (for example, weigh the container that the hopper, middle transition hopper, material bag etc. can accept the material), at the in-process of feeding, can take out the raise dust that produces in the material container to the dust collecting bag in through the air exhauster to prevent that the raise dust from diffusing in the external environment.

Preferably, a pipeline switch is arranged on the branch inlet pipe.

The utility model discloses a preferred scheme, wherein, discharge control mechanism carries out the driving piece that opens and shuts including setting up at the unloading valve and the drive unloading valve of the lower extreme of weighing the fill.

The utility model discloses a preferred scheme, wherein, weighing module is weighing sensor, can adopt sensors such as photoelectric type, fluid pressure type or electromagnetic force formula.

The utility model discloses a preferred scheme, wherein, be equipped with the residual broken arch device that prevents material residual and arch on weighing hopper or/and the middle transition hopper, this residual broken arch device includes dwang, a plurality of scraper that sets up on the dwang and drives the rotatory rotation drive mechanism of dwang, this rotation drive mechanism includes the rotation driving motor; the rotating rod is arranged in the weighing hopper or the middle transition hopper, and the scraper is positioned at the part, which is in the shape of a circular truncated cone, of the lower part of the weighing hopper or the middle transition hopper and is close to or in contact with the surface of the part, which is in the shape of a circular truncated cone. During operation, under the drive of the rotation driving mechanism, the rotating rod drives the scraper to rotate, so that residual materials on the surfaces of the weighing hopper and the middle transition hopper, which are in the shape of a circular truncated cone, are scraped, the materials in the weighing hopper and the middle transition hopper are completely discharged, and the weighing accuracy is further ensured.

Further, the weighing hopper and the middle transition hopper respectively comprise a cylindrical upper part and a lower part in a round table shape.

Preferably, the scrapers are provided in plurality and uniformly distributed along the circumferential direction; along the direction of dwang pivoted, the scraper sets up by the slope forward. Generally, because the scraper is positioned in the lower part of the weighing hopper or the middle transition hopper, which is in a truncated cone shape, and because the lower part of the truncated cone shape is inverted, the opening of the lower end is small; in the vertical direction, the size of the upper end of the scraper is larger than that of the lower end, and in the rotating process, the material scraped at the upper end of the scraper is far more than that scraped at the lower end, so that the outlet of the lower end in the shape of a circular truncated cone is easily blocked, and the falling of the material is not facilitated. For this reason, incline forward the scraper toward pivoted direction in this embodiment, the scraper of rotation in-process can produce the decurrent effort to the material, is favorable to not only pushing down the material of scraping like this, avoids the material of scraping to remain on the scraper, and the material that lies in the top is scraped earlier to the great upper end of size moreover for the material of top drops earlier and goes out than the material of below, thereby can not take place the phenomenon of blocking up.

Furthermore, the scraper and the weighing hopper or the part corresponding to the inner wall of the part in the shape of a circular truncated cone at the lower part of the middle transition hopper are arranged into a sawtooth structure, and the sawtooth structures on the plurality of scrapers are staggered. Through setting up the sawtooth structure, when the scraper was along being the partial inner wall of round platform shape, the sawtooth can be scraped the material and dispersed, and then down the propelling movement with the material.

The utility model discloses a preferred scheme, wherein, be equipped with the gradual change helical blade that is used for assisting the material to move down on the dwang, this gradual change helical blade encircles on the dwang along the extending direction of dwang, and lie in the upper portion of weighing hopper and middle transition hopper;

the gradual change helical blade is formed by connecting a plurality of helical gradual change sections end to end, and each helical gradual change section comprises three blade sections; wherein each blade segment is provided with an inflection point, and the inflection point is the point farthest from the rotating rod; a close point is arranged between two adjacent blade segments, and the included angle between the two adjacent close points is 120 degrees in vertical projection; the blade section extends outwards from one approach point to be far away from the rotating rod, and extends inwards to be close to the rotating rod to return to the other approach point after reaching the inflection point; the direction of extending outwards and the direction of extending inwards are the direction of the comprehensive action among the radial direction, the axial direction and the circumferential direction of the rotating rod. That is, in one spiral transition, from bottom to top, a near point a, a near point B, and a near point C are provided, respectively, and in vertical projection, an angle between the near point a and the near point B (near point C) is 120 °. Specifically, the gradual change helical blade is different from the traditional equidistant helical blade, and in the helical gradual change section, from the approach point, other parts are separated from the rotating rod by a certain distance, so that a gap for passing materials is reserved between the helical gradual change section and the rotating rod, and the materials can enter the hopper conveniently; in the axial direction, gradual change helical blade encircles in the outside of dwang, and under the drive that rotates driving motor, the dwang drives gradual change helical blade and rotates to promote partial material and down remove, not only can make partial material shift away from in weighing fill and the middle transition hopper fast like this, but also can break away the material of piling up in fighting, prevent to take place to block up.

Preferably, a reinforcing strip for reinforcing the strength of the gradual spiral blade is arranged between the inflection point and the rotating rod.

Compared with the prior art, the utility model following beneficial effect has:

1. the utility model discloses a high-speed accurate racking machine can enough weigh the material with higher efficiency, can also ensure the degree of accuracy of weighing, increases substantially the qualification rate of packing material.

2. The utility model discloses in, can set up a plurality of weighing unit according to actual need, form a wheel flow alternating partial shipment mode, can further improve the efficiency of partial shipment.

3. In feeding mechanism, the spiral feed rod is equipped with a plurality ofly, and corresponds a plurality of weight grades respectively, weighs in grades, can reduce the error of weighing and improve the efficiency of weighing by furthest.

4. Through adopting the volumetric method to carry out elementary measurement in feeding mechanism, make the utility model discloses become the accurate quantitative partial shipment technique that forms by the scientific combination of the measurement technique of volumetric method and the weighing technique of weight method, the high precision of dress volume that not only can ensure the partial shipment material reaches more than ten thousandths, and stability is very good, the error rate also is less than more than ten thousandths, make present trade product disqualification rate reduce the level to several ten thousandths by several percent level, its precision has improved more than 100 times, the precision of partial shipment material has been improved greatly, the rate of accuracy, stability and production efficiency, thereby will be at energy saving and consumption reduction, use manpower and materials sparingly, environmental protection safety etc. many-sided huge social that brings.

Drawings

Fig. 1-2 are schematic views of three-dimensional structures at two different viewing angles of the high-speed precise racking machine of the present invention.

Fig. 3 is a schematic perspective view of the feeding mechanism in fig. 1.

Fig. 4 is a schematic side view of the feeding mechanism of the present invention.

Fig. 5 is a schematic perspective view of the weighing mechanism in fig. 1.

Fig. 6 is a schematic perspective view of the intermediate transition hopper and bagging drive mechanism of fig. 1.

FIG. 7 is a schematic view of the dust collector and the material container of the present invention.

Fig. 8-9 are two side views of the intermediate transition hopper of fig. 1 during bagging, wherein fig. 8 is a side view before bagging and fig. 9 is a side view during bagging.

Fig. 10 is an enlarged view of Y in fig. 8.

Fig. 11 is an enlarged view of Z in fig. 9.

Fig. 12 is a front view of another embodiment of the intermediate transition hopper and the weighing hopper of the present invention.

Fig. 13 is a schematic perspective view of another embodiment of the middle transition hopper and the weighing hopper of the present invention.

FIG. 14 is a schematic front view of the middle transition hopper, the rotating rod, the scraper and the gradual change helical blade of the present invention,

FIG. 15 is a schematic top view of the intermediate transition hopper, turning bar and progressive spiral vanes of FIG. 14,

fig. 16 is a top view of the intermediate transition hopper, turning bars and scrapers of the present invention.

Fig. 17 is a schematic perspective view of a scraper according to the present invention.

Fig. 18 is a side view of an intermediate transition hopper and bagging drive mechanism in accordance with the invention.

Detailed Description

In order to make those skilled in the art understand the technical solution of the present invention well, the present invention will be further described below with reference to the following examples and drawings, but the embodiments of the present invention are not limited thereto.

Example 1

Referring to fig. 1 to 6, the high-speed precise racking machine in the embodiment includes a weighing unit for weighing a material and a charging unit for bagging the weighed material; the weighing device comprises two weighing units, wherein a feeding mechanism A is arranged above the weighing units; each weighing unit comprises a primary metering feeding mechanism B and a weighing mechanism C, the feeding mechanism B comprises a charging hopper 1 for charging and three spiral feeding rods 2 which are arranged at the lower part of the charging hopper 1 and have different sizes, and a discharging hopper 12 for conveying materials downwards is arranged at a feeding port of the charging hopper 1; the weighing mechanism C comprises a weighing hopper 3 and a weighing module 4 for measuring the weight of the weighing hopper 3 and the material in the hopper, and the weighing hopper 3 is arranged below the blanking hopper 12; the loading unit is positioned below the weighing unit and comprises a material bag D for packaging materials and a bag opening mechanism for supporting the material bag D and opening the opening of the material bag D; a middle transition hopper 5 is arranged between the weighing hoppers 3 and the material bag D, the feed openings of the two weighing hoppers 3 extend into the upper opening of the middle transition hopper 5, and a discharge control mechanism for controlling the opening and closing of the feed openings is arranged on the weighing hoppers 3; the opening of the material bag D is opposite to the discharge hole of the middle transition hopper 5.

Referring to fig. 3-4, the feeding mechanism B is a volumetric feeding mechanism that performs primary metering by a volumetric method, and the volumetric feeding mechanism further includes a feeding driving motor 6 that provides feeding power to the screw feeding rod 2. That is, the feeding mechanism B sets a target weight of feeding when feeding, which is calculated according to a volumetric method, specifically, controlled by controlling the rotation angle of the screw feeding rod 2; in the single feeding operation of the spiral feeding rod 2, the total angle of the rotation of the spiral feeding rod 2 driven by the feeding driving motor 6 is equal to the target weight value of the primary metering divided by the material density and then divided by the volume of the materials conveyed when the spiral feeding rod rotates by a unit angle. Therefore, the utility model discloses a high-speed accurate racking machine is weighing time-sharing and is elementary volume method measurement and final weight method measurement, and wherein, the effect of elementary volume method measurement lies in, carries the material that is close to target weight fast, and the part that a small amount of remaining is not enough at last is calculated by the weight method and is guaranteed the precision to both improve the efficiency of pay-off, can ensure the accuracy of weight again. The spiral feeding rod 2 is obliquely arranged at the lower end of the charging hopper 1, and one end provided with a feeding port is higher than one end connected with the feeding driving motor 6. The above-mentioned up advantage that sets up aslope lies in, can ensure that the material only drops from the pay-off mouth under the drive of screw feed rod 2, can avoid authorizing the problem that exists in the utility model discloses a "weighing equipment" that bulletin number is CN 204730919U effectively: because the screw rod is horizontally arranged, when the material moves the feeding port along with the blades, only the material crossing the feeding port can fall off under the action of the self-acting force under the normal condition; however, in the actual use process, because the material is powdery and is located in the screw rod in a pile, the rigidity of the material is very low, the material (not required for weighing) which is close to the feeding port but is not stretched to the feeding port is easy to collapse along with the material (required for weighing) stretched to the feeding port in front, and thus, the weight of the material has an error. In this preference, the slope of pay-off mouth sets up, and the gravity of material self makes it stop on spiral pay-off pole 2 all the time (stride the material of pay-off mouth except), is close to the pay-off mouth like this but not striding the material (the non-needs of weighing) of pay-off mouth and can not drop down along with the place ahead strides the material (the needs of weighing) of pay-off mouth to can not influence the weighing mass of material.

The number of the weighing units is three, wherein the three spiral feeding rods 2 are arranged in a triangular shape. In addition, the three screw feed rods 2 may be arranged in a horizontal direction or in a vertical direction.

Referring to fig. 3, the feeding mechanism B further includes a feeding auxiliary mechanism for stirring the material in the charging hopper 1, and the feeding auxiliary mechanism includes a stirring rod 13 and a stirring driving motor 14 for driving the stirring rod 13 to rotate; the stirring rod 13 is arranged above the screw feeding rod 2. Through above-mentioned structure, can stir the material in the charging hopper 1 for the material is in not hard up state, and the material of being convenient for falls on the screw feeding rod 2, thereby guarantees screw feeding rod 2 pivoted propelling movement volume at every turn.

Referring to fig. 1-2 and 8-9, the high-speed precise racking machine in this embodiment further includes a bagging driving mechanism for driving the middle transition hopper 5 to move vertically, the bagging driving mechanism includes a lifting driving motor 7 and a lifting transmission assembly, the lifting transmission assembly includes a lead screw and a lead screw nut, the lead screw nut is connected to an output shaft of the lifting driving motor 7, the lifting driving motor 7 is fixed on a frame of the equipment, and the lead screw is fixedly connected with the middle transition hopper 5 through a lifting frame 8. Generally, in the existing bagging process, a material bag D is placed below a middle transition hopper 5, and a discharge hole of the material bag D is aligned with the material bag D; wherein, because the discharge gate of middle transition hopper 5 has the take the altitude apart from material bag D's bottom, at the in-process of unloading, during powdered material constant speed gets into material bag D, replace the air in material bag D out, wherein, the air that the replacement was come out can collide on the material that is getting into material bag D down, thereby can grow great raise dust, can pollute peripheral environment like this not only, and can cause the waste of material, more importantly can cause the weight of bagging-off material not to pass, the influence is very big. In the present optimization, by providing the bagging driving mechanism, before bagging, the bagging driving mechanism drives the middle transition hopper 5 to move downward to be close to the material bag D to be bagged, so as to reduce the gap between the discharge port of the middle transition hopper 5 and the bottom of the material bag D as much as possible, as shown in fig. 8; in the in-process of bagging-off, along with piling up of material, transition hopper 5 up removed in the middle of bagging-off actuating mechanism slowly drives, like fig. 9, keeps simultaneously that the discharge gate of middle transition hopper 5 and the clearance of the bottom of material bag D are not too big, and then has avoided the raise dust effectively. In order to facilitate bagging, the bottom of the middle transition hopper 5 is provided with a material guide pipe 5-1 extending downwards, so that materials can be guided into the material bag D conveniently, when the middle transition hopper 5 is lifted, the material guide pipe 5-1 moves up and down in the material bag D, and the lower end opening of the material guide pipe 5-1 forms a discharge opening of the middle transition hopper 5.

Referring to fig. 6 to 7, the high-speed precise racking machine in the embodiment further includes a dust collecting device for collecting the flying dust generated during the charging process, the dust collecting device includes a dust bag 23 for collecting the flying dust, a dust collecting pipe for guiding the flying dust into the dust bag 23, and an exhaust fan 24 for drawing the flying dust into the dust bag 23; wherein, the dust collecting bag 23 is densely provided with air outlet holes for filtering dust discharged from the material container; the dust collecting pipe comprises a main inlet pipe 25 and a branch inlet pipe 26, and the exhaust fan 24 is arranged on the main inlet pipe 25; one end of the main inlet pipe 25 is communicated with the dust collection bag 23, and the other end is communicated with a plurality of branch inlet pipes 26; the branch inlet pipes 26 are multiple, and the multiple branch inlet pipes 26 respectively extend into different material containers. Specifically, the dust collecting bag 23 can be respectively communicated with different material containers through the dust collecting pipe and the branch inlet pipe 26 (for example, the weighing hopper 3, the middle transition hopper 5, the material bag D, and the like can accept materials), and in the charging process in the embodiment, the dust generated in the weighing hopper 3, the middle transition hopper 5, and the material bag D can be pumped into the dust collecting bag 23 through the exhaust fan 24, so that the dust is prevented from being diffused in the external environment.

The branch inlet pipe 26 is provided with a pipeline switch, and in the corresponding occasion, the pipeline switch is opened to communicate the corresponding material container and the dust collecting bag 23.

The upper opening of the middle transition hopper 5 is provided with a cover plate 9, and the cover plate 9 is provided with two stretching holes 9-1 and a dust collecting hole 9-2; the feed opening of the weighing hopper 3 extends into the intermediate transition hopper 5 through the extension hole 9-1 of the cover plate 9.

Referring to fig. 8-9, in the present embodiment, the lower end of the intermediate transition hopper 5 has an opening and closing structure for controlling the opening and closing of the intermediate transition hopper; the middle transition hopper 5 can move up and down under the driving of the bagging driving mechanism, when the middle transition hopper 5 rises to the highest point, the bottom of the middle transition hopper 5 reaches the feed opening of the weighing hopper 3, referring to fig. 8, in the process that the middle transition hopper 5 moves from the highest point to the lowest point, the bottom of the middle transition hopper 5 is gradually far away from the feed opening of the weighing hopper 3 to provide a containing space for materials released from the feed opening; when the intermediate transition hopper 5 descends to the lowest point, the discharge hole of the intermediate transition hopper 5 reaches the bottom of the inner cavity of the material bag D, see fig. 9; in the process that the middle transition hopper 5 gradually moves from the lowest point to the highest point, the opening and closing structure is opened and gradually releases materials into the material bag D, when the middle transition hopper 5 rises to the highest point, all the materials in the middle transition hopper 5 are released into the material bag D, after all the materials are completely discharged, the discharge hole is closed, at the moment, the bottom of the middle transition hopper 5 reaches the discharge hole of the weighing hopper 3 again to prepare for next material transfer, and the operation is circulated. Based on the scheme, the middle transition hopper 5 plays a role in starting and stopping, in the process of transferring the materials from the weighing hopper 3 to the middle transition hopper 5, the materials gradually move upwards from the bottom of the middle transition hopper 5, so that dust caused by the materials falling from top to bottom is avoided, after the materials are transferred to the middle transition hopper 5, the discharge port of the middle transition hopper 5 just reaches the bottom of the material bag D, namely the middle transition hopper 5 at the moment is ready to transfer the materials to the material bag D, and after the middle transition hopper 5 transfers all the materials to the material bag D, the bottom of the middle transition hopper 5 reaches the discharge port of the weighing hopper 3 at the moment, namely the middle transition hopper 5 is ready to receive the materials of the weighing hopper 3 at the moment, and the lifting motion of the middle transition hopper 5 is utilized to transfer the materials from the weighing hopper 3 to the middle transition hopper 5 to the material bag D to realize no time in the process of transferring the materials to the material bag D from the weighing hopper 3 to the middle transition hopper 5 The seam butt joint has saved the time of waiting, makes the partial shipment efficiency maximize of material when avoiding the raise dust.

Referring to fig. 8-10, a material guiding pipe 5-1 is arranged at the lower end of the middle transition hopper 5, and the lower end of the material guiding pipe 5-1 is the discharging hole; an inner support member 20 for supporting materials is arranged in the material guide pipe 5-1, a supporting driving mechanism for driving the inner support member 20 to move up and down in the material guide pipe 5-1 is arranged above the inner support member 20, and the supporting driving mechanism comprises a supporting driving cylinder 21 and a driving rod 22 arranged between a telescopic rod of the supporting driving cylinder 21 and the inner support member 20; the opening and closing structure comprises the inner support piece 20 and a blanking section 5-2, wherein a conical bearing surface which is downwards inclined towards the outer side is arranged on the inner support piece 20, and the circumferential side surface of the bearing surface is attached to the inner wall of the material guide pipe 5-1; the blanking section 5-2 is positioned at the bottom end of the material guide pipe 5-1, and the diameter of the inner cavity of the blanking section is larger than that of the inner cavity of the material guide pipe 5-1; before the materials of the bearing hopper 4 enter the middle transition hopper 5, the bearing driving cylinder 21 drives the inner support member 20 to move to the top of the material guide pipe 5-1, so that after the materials of the bearing hopper 4 enter the middle transition hopper 5, the materials at the bottom end are supported on the inner support member 20, the bearing driving cylinder 21 drives the inner support member 20 to move downwards, the printing materials above enter the material guide pipe 5-1 and move downwards, the height between the material guide pipe and a material bag is reduced, and dust raising is prevented; before bagging, the inner supporting piece 20 supports the materials to move downwards to the tail end of the material guide pipe 5-1 and stays above the blanking section 5-2, and meanwhile, under the driving of a bagging driving mechanism, the middle transition hopper 5 moves towards the bottom of the inner cavity of the material bag until the blanking section 5-2 moves to the bottom of the inner cavity of the material bag, so that the input height of the materials is further reduced, the generation of raised dust is reduced to the maximum extent, and dust-free packaging is realized. Then the bearing driving cylinder 21 continues to drive the inner support member 20 to move downwards to enable the inner support member to enter the blanking section 5-2, and as the diameter of the inner cavity of the blanking section 5-2 is larger than that of the inner cavity of the guide pipe 5-1, a blanking gap exists between the inner support member 20 and the blanking section 5-2, and the inner support member 20 is provided with a conical bearing surface which inclines downwards towards the outer side, materials above the bearing surface can fall into a material bag from the blanking gap due to lack of blocking and limiting of the guide pipe 5-1.

Referring to fig. 5, the discharging control mechanism includes a discharging valve 10 disposed at the lower end of the weighing hopper 3 and an opening and closing driving cylinder 11 for driving the discharging valve 10 to open and close. The opening and closing structure of the lower end of the intermediate transition hopper 5 may be the same as the unloading control mechanism, or may be an electromagnetic valve or the like, as long as the opening can be controlled to be opened and closed, or may be implemented with reference to the prior art.

The weighing module 4 is a weighing sensor and can adopt photoelectric, hydraulic or electromagnetic sensors and the like.

Referring to fig. 1-2, in the present embodiment, the loading unit further includes an instant bag making device E for making a material bag D on site, which includes a rolling conveying mechanism for conveying a bag film, a bag forming guiding mechanism F for guiding the bag film into a cylindrical shape, a sealing mechanism G for sealing the cylindrical bag film, and a sealing mechanism H for sealing the cylindrical bag film.

The roll material is conveyed into a bag forming guide mechanism F by adopting a field bag making mode, the planar material is bent into a cylindrical bag blank, meanwhile, the edge sealing mechanism H is utilized to carry out heat bonding on the interface, the cylindrical bag blank is sleeved on a cylindrical barrel I, and gradually conveyed downwards, a material guide pipe 5-1 in a middle transition hopper 5 is arranged at the inner side of the cylinder I, a sealing mechanism G for sealing the bag bottom and the bag opening is arranged at the lower part of the cylinder I, the bag bottom is firstly sealed in a heating mode, then the material is charged, the sealing is carried out after the charging is finished (meanwhile, the bag bottom of the next bag is also thermally sealed), and the filled material bags D are cut by a bag cutting mechanism (not shown in the figures, which can be implemented according to the prior art, for example, the bag cutting can be implemented by a cutting motion with two oppositely arranged cutters), so as to implement a bag-making and filling process. The bottom of the cylindrical barrel I forms the bag opening mechanism, so that the bagged material bag D is supported and opened by the bottom of the cylindrical barrel I, and the whole material bag D is hung at the lower part of the cylindrical barrel I.

And if a bag which is made in advance is adopted as a charging bag, the bag can be conveyed to a charging station through a conveying line, then the bag is picked up through a mechanical arm and is opened, and the bag can be opened by adopting symmetrically arranged suction heads which are adsorbed on two sides of the opening part of the bag and are opened.

Referring to fig. 1 to 6, the working principle of the high-speed precise racking machine in the embodiment is as follows:

the during operation, the material is carried to charging hopper 1 in advance, during the partial shipment, spiral feeding rod 2 begins to rotate, and to the direction propelling movement material of pay-off mouth, with material propelling movement to weighing hopper 3 on, weighing module 4 weighs to weighing hopper 3 in real time, and with weight data feedback to backstage control system, compare the weight data who obtains with predetermined weight by backstage control system, and the rotation of three spiral feeding rod 2 of control, make the weight of material be close to the weight of regulation gradually. Assuming that the weight specified by material weighing is 1000g, three spiral metering feeding rods 2 are arranged in the metering feeding mechanism B, the three spiral metering feeding rods correspond to 100g, 10g and 1g of pushing weight levels respectively, and the maximum error values are 10g, 1g and 0.1g respectively; the method comprises the following steps that firstly, 100g of spiral feeding rod 2 is used for pushing, then 10g of spiral feeding rod 2 is used for pushing, when the real-time weight difference of the weight target is smaller than or equal to 10g, 1g of spiral feeding rod 2 is selected, and the weight difference is gradually reduced until the weight difference is smaller than 0.1 g; in the weighing process, the spiral feeding rod 2 with large order of magnitude is used for pushing firstly, and then the spiral feeding rod 2 with small order of magnitude is used for pushing gradually, so that the higher weighing efficiency is ensured, the weighing error can be reduced gradually, the weight of the weighed material is further close to the specified weight, and the qualified rate of the packaged material is improved. After weighing, the material enters the middle transition hopper 5 through the feed opening of the weighing hopper 3, and then falls into the material bag D through the discharge opening of the middle transition hopper 5, so as to perform processing technologies such as packaging and the like on the material bag D.

Specifically, in the process of weighing the material, the material needs to be pushed by a multi-stage screw to obtain accurate weighing degree, so that the time consumption of the weighing process is long; the weighed materials are directly poured into the material bag D below from the weighing hopper 3 through the middle transition hopper 5, the time consumption is short, and the sealing of the material bag D can be quickly finished, so that when one-time subpackaging is finished, the weighing unit can finish the weighing of the next material after a long time, and the next material is already waiting below the middle transition hopper 5; that is, the length of the weighing time is a main factor that limits the efficiency of the dispensing to be difficult to improve in each packaging work. Therefore, in order to make the weighing time not to be a limiting factor of the subpackaging efficiency, for example, two weighing units can be arranged according to the needs of actual conditions, the first weighing unit and the second weighing unit simultaneously perform weighing work, when the first weighing unit puts the weighed materials into the material bag D, the next batch of materials is weighed immediately, after the material bag D below is replaced (the first weighing unit does not complete weighing yet), the second weighing unit can put the weighed materials into the next replaced material bag D, and then the next batch of materials is weighed; when the next material bag D is replaced, replacing the first weighing unit to put the weighed materials into the material bag D; like this, first weighing unit and second weigh the unit and throw the material in turn, reducible material bag D's latency improves the efficiency of partial shipment effectively. Furthermore, in the practical application process, the time of changing (sealing and transporting) the material bags D can be determined according to the specific time, the weighing units with corresponding quantity are arranged in combination with the weighing and feeding time of the weighing units, the time of waiting for the weighing units to weigh the material bags D is reduced as much as possible, namely, the weighing units finish the weighing work before or at the same time of the material bags D being changed, and the changed material bags D can be directly bagged without waiting.

By arranging the middle transition hopper 5, when the weighing module 4 finishes the measurement of the weighing hopper 3, the materials in the middle transition hopper can be discharged into the middle transition hopper 5 for bagging; wherein, before the bagging-off or in-process, feeding mechanism B can carry out next work of weighing again with material propelling movement to weighing fill 3 on, need not to wait to the completion of last bagging-off work, can obviously improve the efficiency of partial shipment like this.

Example 2

Different from the embodiment 1, the high-speed precise racking machine in the embodiment further comprises a bagging driving mechanism for driving the animal material bags to vertically lift and move, wherein the bagging driving mechanism comprises a lifting driving motor and a lifting transmission assembly; the lifting transmission assembly comprises a screw rod and a screw rod nut, the lifting driving motor is fixed on the rack of the equipment, and the screw rod nut is fixedly connected with the material bag through the lifting frame. In addition, the lifting transmission assembly can also be composed of a gear rack transmission assembly. Before bagging, the bagging driving mechanism drives the material bag to be bagged to be upward close to the discharge hole of the middle transition hopper, so that a gap between the discharge hole of the middle transition hopper and the bottom of the material bag is reduced as much as possible; in the bagging process, along with the accumulation of materials, the bagging driving mechanism slowly drives the animal material bag to move downwards, and meanwhile, the gap between the discharge hole of the middle transition hopper and the bottom of the material bag is kept not too large, so that dust raising is effectively avoided.

Example 3

In this embodiment, be equipped with the vibrating device that prevents the material remaining when unloading on weighing hopper and the middle transition hopper. The vibrating device can be composed of a vibrator or a vibrating hammer, the materials are easy to remain in the weighing hopper and the middle transition hopper through the conical part, and the materials are prevented from remaining on the inner walls of the weighing hopper and the middle transition hopper during discharging through vibration.

Example 4

Referring to fig. 12-17, in the present embodiment, the weighing hoppers 3 and the intermediate transition hopper 5 are provided with a residual arch breaking device for preventing the residual and arch formation of the material, the residual arch breaking device includes a rotating rod 15, a plurality of scrapers 16 disposed on the rotating rod 15, and a rotation driving mechanism for driving the rotating rod 15 to rotate, the rotation driving mechanism includes a rotation driving motor 17 and a belt transmission structure, the belt transmission structure includes two belt wheels and a belt wound between the belt wheels, and the belt wheels are respectively fixed on an output shaft of the rotation driving motor 17 and the rotating rod 15. The rotating rod 15 is arranged in the weighing hopper 3 and the intermediate transition hopper 5, and the scraper 16 is positioned at the part, which is in the shape of a truncated cone, of the lower part of the weighing hopper 3 and the intermediate transition hopper 5 and is close to the surface of the part which is in the shape of a truncated cone. Further, in the present embodiment, the weighing hoppers 3 and the intermediate transition hopper 5 each include an upper portion having a cylindrical shape and a lower portion having a truncated cone shape. During operation, under the drive of the rotation driving mechanism, the rotating rod 15 drives the scraper 16 to rotate, so that residual materials on the surfaces of the weighing hoppers 3 and the middle transition hoppers 5, which are in the shape of a circular truncated cone, are scraped, the materials in the weighing hoppers 3 and the middle transition hoppers 5 are completely discharged, and the weighing accuracy is further ensured.

The number of the scrapers 16 is 3, and the scrapers are uniformly distributed along the circumferential direction; the scraper 16 is disposed obliquely forward in the direction in which the rotating lever 15 rotates. Generally, since the scrapers 16 are located in the lower portions of the weighing hoppers 3 and the intermediate transition hoppers 5 in the shape of a circular truncated cone, and since the lower portions in the shape of a circular truncated cone are inverted, the openings at the lower ends are small; in the vertical direction, the size of the upper end of the scraper 16 is larger than that of the lower end, and in the rotating process, the material scraped at the upper end of the scraper 16 is far more than that scraped at the lower end, so that the outlet of the lower end in the shape of a circular truncated cone is easily blocked, and the falling of the material is not facilitated. For this reason, incline forward scraper 16 toward the pivoted direction in this embodiment, the scraper 16 of rotation in-process can produce the decurrent effort to the material, is favorable to not only pushing down the material of scraping like this, avoids the material of scraping to remain on scraper 16, and the material that lies in the top is scraped earlier to the great upper end of size moreover for the material of top drops earlier than the material of below, thereby avoids taking place the phenomenon of blocking up.

Furthermore, the parts of the scrapers 16 corresponding to the inner walls of the cone-shaped parts at the lower parts of the middle transition hoppers 5 (weighing hoppers 3) are arranged into saw-toothed structures, the saw-toothed structures on the scrapers 16 are staggered with each other, and the saw-toothed structures on the scrapers 16 are overlapped together in the circumferential direction to form a complete scraper without saw teeth. By arranging the sawtooth structure, when the scraper 16 moves along the inner wall of the circular truncated cone-shaped part, the sawtooth can scrape the materials away to avoid the fed materials from forming a cluster, and if the scraper with a complete and unnotched edge is adopted, the materials are easy to accumulate into a cluster when being scraped; because the sawtooth structures of the scrapers 16 are staggered, and the sawtooth structures of the scrapers 16 can form a complete non-notched edge after being overlapped together along the circumferential direction, the materials cannot be omitted.

The rotating rod 15 is provided with a gradually-changing helical blade 18 for assisting materials to move downwards, and the gradually-changing helical blade 18 surrounds the rotating rod 15 along the extending direction of the rotating rod 15 and is positioned in the upper parts of the weighing hoppers 3 and the middle transition hopper 5;

the gradual change helical blade 18 is formed by connecting a plurality of helical gradual change sections end to end, and each helical gradual change section comprises three blade sections; wherein, each blade segment is provided with an inflection point X which is the point farthest from the rotating rod; a close point is arranged between two adjacent blade segments, and the included angle between the two adjacent close points is 120 degrees in vertical projection; the blade section extends outwards from one approach point to be far away from the rotating rod 15, and extends inwards to be close to the rotating rod to return to the other approach point after reaching the inflection point X; the outward extending direction and the inward extending direction are directions in which the rotating rod 15 is integrated in the radial direction, the axial direction, and the circumferential direction. That is, in one spiral transition, from bottom to top, a near point a, a near point B, and a near point C are provided, respectively, and in vertical projection, an angle between the near point a and the near point B (near point C) is 120 °. Specifically, the gradually-changing helical blade 18 is different from a traditional equidistant helical blade, and in the spiral gradually-changing section, from a point close to the point, other parts are separated from the rotating rod 15 by a certain distance, so that a gap for passing materials is reserved between the spiral gradually-changing section and the rotating rod 15, and the materials can enter the hopper conveniently; in the axial direction, gradual change helical blade 18 encircles in the outside of dwang 15, and under the drive of rotating driving motor 17, dwang 15 drives gradual change helical blade 18 and rotates to promote partial material and move down, not only can make partial material shift away in can following weighing fill 3 and middle transition hopper 5 fast like this, but also can break the accumulational material in the fill, prevent to take place to block up.

Further, a reinforcing strip 19 for reinforcing the strength of the gradual change helical blade 18 is arranged between the inflection point X and the rotating rod.

Example 5

Referring to fig. 18, unlike embodiment 1, the bagging driving mechanism in this embodiment includes a lifting driving motor 7 and a lifting transmission assembly, the lifting transmission assembly includes a lifting gear and a lifting rack that are engaged with each other, the lifting gear is fixed on an output shaft of the lifting driving motor 7, the lifting driving motor 7 is fixed on a lifting frame 8, and the lifting frame 8 is fixedly connected with the intermediate hopper 5; the lifting rack is fixed on a fixing frame, and the fixing frame is fixed on a rack of the equipment.

The above is the preferred embodiment of the present invention, but the embodiment of the present invention is not limited by the above, and any other changes, modifications, substitutions, combinations, and simplifications which do not depart from the spirit and principle of the present invention should be equivalent replacement modes, and all are included in the scope of the present invention.

Claims

1. A high-speed accurate racking machine is characterized by comprising a weighing unit for weighing materials and a charging unit for bagging the weighed materials;

2. The high-speed precise racking machine according to claim 1, wherein said feeding mechanism is a volumetric feeding mechanism for performing primary metering by a volumetric method, and further comprising a feeding driving motor for providing feeding power to the screw feeding rod; in the single feeding operation of the spiral feeding rod, the total rotating angle of the spiral feeding rod driven by the feeding driving motor is equal to the target weight value of the primary metering divided by the material density and then divided by the volume of the conveyed material when the spiral feeding rod rotates by a unit angle.

3. The high-speed precision racking machine according to claim 2, wherein said screw feed rod is obliquely disposed at a lower end of the hopper, and an end provided with the feed port is higher than an end connected to the feed driving motor.

4. The high-speed precision racking machine according to claim 1 or 2, wherein said feeding mechanism further comprises a feeding assist mechanism for agitating the material in the hopper, the feeding assist mechanism comprising an agitating bar and an agitation driving motor for driving the agitating bar to rotate; the stirring rod is arranged above the spiral feeding rod.

5. The high-speed precise racking machine according to claim 1, further comprising a bagging driving mechanism for driving the intermediate transition hopper to vertically move up and down, wherein before bagging, the discharge port of the intermediate transition hopper is located at the bottom of the inner cavity of the material bag, and when the material passes through the intermediate transition hopper and enters the material bag, the bagging driving mechanism gradually drives the intermediate transition hopper to move up along with the accumulation of the material.

6. The high-speed precise racking machine according to claim 5, wherein the lower end of said intermediate transition hopper is provided with an opening and closing structure for controlling the opening and closing of said intermediate transition hopper; the middle transition hopper moves up and down under the driving of the bagging driving mechanism, and when the middle transition hopper rises to the highest point, the bottom of the inner cavity of the middle transition hopper reaches the discharge opening of the weighing hopper; in the process that the middle transition hopper moves from the highest point to the lowest point, the bottom of the inner cavity of the middle transition hopper is gradually far away from the feed opening of the weighing hopper to provide a containing space for materials released from the feed opening; when the middle transition hopper descends to the lowest point, the discharge hole of the middle transition hopper reaches the bottom of the inner cavity of the material bag; in the process that the middle transition hopper gradually moves from the lowest point to the highest point, the opening and closing structure is opened, so that the materials are gradually released into the material bag; when the middle transition hopper rises to the highest point, all the materials of the middle transition hopper are released into the material bag, then the opening and closing structure is closed, and at the moment, the bottom of the inner cavity of the middle transition hopper returns to the feed opening of the weighing hopper.

7. The high-speed precise racking machine according to claim 6, wherein a material guiding pipe is arranged at the lower end of the intermediate transition hopper, and the lower port of the material guiding pipe is the material outlet; an inner support piece for supporting materials is arranged in the material guide pipe, a supporting driving mechanism for driving the inner support piece to move up and down in the material guide pipe is arranged above the inner support piece, and the supporting driving mechanism comprises a supporting driving piece and a driving rod arranged between the driving end of the supporting driving piece and the inner support piece; the opening and closing structure comprises an inner support piece and a blanking section, wherein the inner support piece is provided with a conical bearing surface which is declined towards the outer side, and the circumferential side surface of the inner support piece is attached to the inner wall of the material guide pipe; the blanking section is connected to the bottom end of the material guide pipe, and the diameter of the inner cavity of the blanking section is larger than that of the inner cavity of the material guide pipe; when the inner supporting piece is positioned in the blanking section, a blanking gap is arranged between the inner supporting piece and the blanking section;

before the materials of the bearing hopper enter the middle transition hopper, the bearing driving piece drives the inner support piece to move to the top of the material guide pipe, after the materials enter the middle transition hopper, the materials at the bottom end are supported on the inner support piece, and the bearing driving piece drives the inner support piece to move downwards so that the printing materials above enter the material guide pipe and move downwards; before bagging, the inner supporting piece supports the material to move downwards to the discharge port of the material guide pipe, and the bagging driving mechanism drives the discharge port of the middle transition hopper to reach the bottom of the inner cavity of the material bag.

8. The high-speed accurate racking machine according to claim 6, wherein said bagging drive mechanism comprises a lift drive motor and a lift transmission assembly, said lift transmission assembly comprises a lift gear and a lift rack which are engaged with each other, said lift gear is fixed on an output shaft of said lift drive motor, said lift drive motor is fixed on a lift rack, said lift rack is fixedly connected with the intermediate hopper; the lifting rack is fixed on a fixing frame, and the fixing frame is fixed on a rack of the equipment.

9. The high-speed precise racking machine according to claim 1, further comprising a bagging driving mechanism for driving the animal material bags to move vertically, wherein before bagging, the discharge port of the intermediate transition hopper is located at the bottom of the inner cavity of the material bag, and when the material enters the material bags through the intermediate transition hopper, the bagging driving mechanism gradually drives the material bags to move downwards along with the accumulation of the material.

10. The high-speed accurate racking machine according to claim 1, further comprising a dust collecting device for collecting fugitive dust generated during charging, the dust collecting device comprising a dust bag for collecting fugitive dust, a dust collecting pipe for guiding fugitive dust into the dust bag, and an exhaust fan for drawing fugitive dust into the dust bag;

wherein, the dust collecting bag is densely provided with air outlet holes for filtering dust discharged from the material container; the dust collecting pipe comprises a main inlet pipe and a branch inlet pipe, and the exhaust fan is arranged on the main inlet pipe; one end of the main inlet pipe is communicated with the dust collection bag, and the other end of the main inlet pipe is communicated with the branch pipes; the branch advances the pipe and is a plurality of, and a plurality of branch advances the pipe and extends to in different material container respectively.

11. The high-speed accurate racking machine according to claim 1, wherein said discharge control mechanism comprises a discharge valve disposed at the lower end of the weighing hopper and an opening and closing driving member for driving the discharge valve to open and close.

12. The high-speed precise racking machine according to claim 1, wherein said weighing hopper or/and intermediate transition hopper is provided with a vibration device for preventing material residue during unloading.

13. The high-speed precise racking machine according to claim 1, wherein a residual arch breaking device for preventing materials from remaining and arching is arranged on the weighing hopper or/and the intermediate transition hopper, the residual arch breaking device comprises a rotating rod, a plurality of scrapers arranged on the rotating rod and a rotary driving mechanism for driving the rotating rod to rotate, and the rotary driving mechanism comprises a rotary driving motor; the rotating rod is arranged in the weighing hopper or the middle transition hopper, and the scraper is positioned at the part, which is in the shape of a circular truncated cone, of the lower part of the weighing hopper or the middle transition hopper and is close to or in contact with the surface of the part, which is in the shape of a circular truncated cone.

14. The high-speed precision racking machine according to claim 13, wherein said scraper is provided in plurality and uniformly distributed along a circumferential direction; along the direction of dwang pivoted, the scraper sets up by the slope forward.

15. The high-speed precise racking machine according to claim 13 or 14, wherein the scraper is provided with a saw-toothed structure corresponding to the inner wall of the circular truncated cone-shaped part at the lower part of the weighing hopper or the middle transition hopper, and the saw-toothed structures on the plurality of scrapers are staggered with each other.

16. The high-speed precise racking machine according to claim 13, wherein the rotating rod is provided with a gradual-change helical blade for assisting the material to move downwards, the gradual-change helical blade surrounds the rotating rod along the extending direction of the rotating rod, and is positioned in the upper parts of the weighing hopper and the middle transition hopper;

the gradual change helical blade is formed by connecting a plurality of helical gradual change sections end to end, and each helical gradual change section comprises three blade sections; wherein each blade segment is provided with an inflection point; a close point is arranged between two adjacent blade segments, and the included angle between the two adjacent close points is 120 degrees in vertical projection; the blade section extends outwards from one approach point to be far away from the rotating rod, and extends inwards to be close to the rotating rod to return to the other approach point after reaching the inflection point; the direction of extending outwards and the direction of extending inwards are the direction of the comprehensive action among the radial direction, the axial direction and the circumferential direction of the rotating rod.

17. The high-speed precise racking machine according to claim 16, wherein a reinforcing bar for reinforcing the strength of the gradual-change helical blade is arranged between the inflection point and the rotating rod.