CN113401380A - Discharging device for quantitative powder packaging - Google Patents
Discharging device for quantitative powder packaging Download PDFInfo
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- CN113401380A CN113401380A CN202110740965.4A CN202110740965A CN113401380A CN 113401380 A CN113401380 A CN 113401380A CN 202110740965 A CN202110740965 A CN 202110740965A CN 113401380 A CN113401380 A CN 113401380A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/04—Methods of, or means for, filling the material into the containers or receptacles
- B65B1/10—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders
- B65B1/12—Methods of, or means for, filling the material into the containers or receptacles by rotary feeders of screw type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65B—MACHINES, APPARATUS OR DEVICES FOR, OR METHODS OF, PACKAGING ARTICLES OR MATERIALS; UNPACKING
- B65B1/00—Packaging fluent solid material, e.g. powders, granular or loose fibrous material, loose masses of small articles, in individual containers or receptacles, e.g. bags, sacks, boxes, cartons, cans, or jars
- B65B1/30—Devices or methods for controlling or determining the quantity or quality or the material fed or filled
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- Basic Packing Technique (AREA)
- Supply Of Fluid Materials To The Packaging Location (AREA)
Abstract
The invention discloses a discharging device for quantitative powder packaging, which relates to the technical field of metal powder preparation and comprises the following components: the feeding rod extends in the vertical direction and can rotate, and a spiral feeding groove is formed in the outer side wall of the feeding rod; the sleeve body mechanism is sleeved outside the feeding rod and is provided with a first constant-diameter section and an accommodating section positioned above the first constant-diameter section, the inner wall of the first constant-diameter section abuts against the outer side wall of the feeding rod, and the accommodating section and the feeding rod are provided with accommodating spaces for accommodating powder; the tray that extends along the horizontal direction, its and feed rod looks fixed connection, and be located the below of feed rod, the projection of feed rod in vertical direction is located the projection of tray in vertical direction, has the clearance between the lower terminal surface of tray and feed rod. This application can be solved screw feed rod when quantitative packing by rotating the problem that metal powder still can flow after the stall to improve the precision that metal powder quantitative weighed.
Description
Technical Field
The invention relates to the technical field of metal powder preparation, in particular to a discharging device for quantitative powder packaging.
Background
In recent years, with the rapid development of the field of 3D printing, the 3D printing powder consumable is the most important part of the 3D printing industry chain and is also the most valuable part. The development of metal powder consumables plays a crucial role in the development of the overall system. As a forming raw material, the characteristics of powder directly influence whether a 3D printing forming process can be stably and efficiently carried out, and the shape, the dimensional precision, the structure and the mechanical property of a formed part are decisively influenced. For example, particle size matching of metal powders directly affects the suitability of the printing process; the sphericity of the particles is improved, the satellite ball ratio is reduced, the good fluidity of the powder can be ensured, and the stability of the printing process is improved; the oxygen content, the inclusion ratio and the hollow sphere ratio of the alloy powder are reduced, and the formation of internal defects of the printing piece tissues can be reduced. Thus, the metal powder material is the starting point and source of the entire 3D print forming process.
With the continuous development of science and technology, the packaging of finished metal powder basically gets rid of the era of manual operation and packaging by a steel shovel, automatic equipment continuously replaces manual work to do boring work, an automatic quantitative packaging machine is suitable for quantitative packaging equipment of uniform materials, a metering mode of real-time weighing is adopted, the metering precision is realized by microcomputer control, keyboard operation, fast and slow feeding, the functions of automatic quantification, automatic filling, automatic adjustment of metering errors and the like are realized, and the packaging machine is suitable for conventional common powder-shaped or powder-shaped materials. However, when the existing automatic quantitative packaging machine is used for quantitatively packaging metal powder, the problems that the precision of quantitative packaging is low and the like exist, and the existing automatic quantitative packaging machine cannot be well adapted to the metal powder.
Disclosure of Invention
As for metal powder, it has the particle diameter little, density is big, the shape is approximate spherical characteristic, the applicant finds that when finished product ration packing, the powder can flow from clearance department and spiral feed rod and fall into in the plastic tank when not carrying out spiral feeding, leads to measurement accuracy mistake, has a large amount of dusts to leak simultaneously, and dust safety has hidden danger, also is not convenient for carry out powder packing in succession, influences the quality and the efficiency of product packing, the feeding and the stopping of control powder that can not be effectual. In addition, the applicant also finds that when the metal powder is subjected to experimental quantitative packaging by using the existing quantitative packaging equipment, due to the good flowability of the metal powder, the metal powder flows out of the storage bin to the plastic tank below through the spiral part of the feeding rod when the spiral feeding rod is not rotated, the flow of the metal powder cannot be effectively controlled, and the weighing precision of the metal powder is not high enough. That is to say, still can continue to flow out metal powder after the weight in the plastic tank reaches metal powder and weighs the requirement, do not receive the spiral feed rod rotation with non-pivoted control, this has brought certain difficulty for accurate quantitative weighing of product metal powder.
In order to overcome the above defects in the prior art, an embodiment of the present invention provides a discharging device for quantitative powder packaging, which can solve the problem that metal powder still flows out after a spiral feeding rod rotates to stop rotating during quantitative packaging, thereby improving the precision of quantitative weighing of metal powder.
The specific technical scheme of the embodiment of the invention is as follows:
a discharging device for quantitative powder packaging comprises:
the feeding rod extends in the vertical direction and can rotate, and a spiral feeding groove is formed in the outer side wall of the feeding rod;
the sleeve body mechanism is sleeved outside the feeding rod and is provided with a first constant-diameter section and an accommodating section positioned above the first constant-diameter section, the inner wall of the first constant-diameter section is close to the outer side wall of the feeding rod, and the accommodating section and the feeding rod are provided with accommodating spaces for accommodating powder;
the tray extends along the horizontal direction, is fixedly connected with the feeding rod and is positioned below the feeding rod, the projection of the feeding rod in the vertical direction is positioned in the projection of the tray in the vertical direction, and a gap is formed between the tray and the lower end surface of the feeding rod.
Preferably, the discharging device for quantitative packaging of powder comprises: the middle part of the tray is provided with an opening, the adjusting piece penetrates through the opening of the tray and is fixed with the tray, and the upper end of the adjusting piece is screwed into the middle part of the lower end of the feeding rod and is fixed with the feeding rod.
Preferably, the central area of the upper end surface of the tray is concave relative to the peripheral area.
Preferably, the sheath mechanism comprises: an inner sleeve; the bin is arranged above the inner sleeve; the outer sleeve mechanism is connected with the inner sleeve and the storage bin; the lower end of the inner sleeve is the first constant-diameter section; the accommodating section comprises the upper end of the inner sleeve and the bin.
Preferably, the upper end of the inner sleeve is a gradually expanding section from bottom to top and a second constant diameter section positioned above the gradually expanding section; the lower end of the bin is provided with an outer edge extending outwards in the circumferential direction; the outer sleeve mechanism comprises an outer sleeve, a first bolt and a second bolt, the outer sleeve is sleeved outside the outer edge of the storage bin and the gradual expansion section and the second constant diameter section of the inner sleeve, the upper end of the outer sleeve is provided with an inner edge extending inwards in the circumferential direction, the lower end face of the inner edge is abutted against the upper end face of the outer edge of the storage bin, and the first bolt penetrates into the outer edge and the inner edge along the vertical direction to enable the outer edge and the inner edge to be fixedly connected; and the second bolt penetrates through the outer sleeve along the radial direction and props against the outer side wall of the gradually expanding section of the inner sleeve.
Preferably, the second bolts are a plurality of bolts circumferentially distributed around the axis of the outer sleeve.
Preferably, the outer sleeve mechanism further comprises a third bolt penetrating into the outer sleeve in the radial direction and abutting against the outer side wall of the second constant-diameter section of the inner sleeve.
Preferably, the discharging device for quantitative packaging of powder further comprises: the upper end of the discharge bin is a tapered section from top to bottom, the upper end of the tapered section of the discharge bin is provided with an inner edge extending inwards in the circumferential direction, and the inner edge of the discharge bin forms an opening; the tray is positioned in the reducing section of the discharging bin; the diameter of the opening is larger than the outer diameter of the first constant-diameter section; the upper end surface of the discharging bin is equal to or higher than the lower end surface of the first constant-diameter section.
Preferably, a plurality of first nuts are fixed on the outer side wall of the first constant diameter section, and the plurality of first nuts are located at the same height; a fourth bolt is screwed into the first nut, and the fourth bolt extends along the radial direction; a discharge bin upper cover is sleeved outside the first constant-diameter section and arranged on the fourth bolt; the inner edge of the discharging bin is welded with a fifth bolt extending in the vertical direction, the fifth bolt penetrates through a through hole of the upper cover of the bin, and the upper end of the fifth bolt is screwed into a second nut to abut against the upper cover of the bin.
Preferably, the distance between the lower end surface of the feeding rod and the tray is 15mm-20 mm; the distance between the upper cover of the discharging bin and the upper end surface of the discharging bin is 20-40 mm; the rotating speed of the feeding rod is less than or equal to 300 r/min; the outer diameter of the tray is between 20mm and 30mm larger than the outer diameter of the first constant diameter section.
The technical scheme of the invention has the following remarkable beneficial effects:
according to the discharging device, metal powder is placed in the accommodating section, the metal powder in the accommodating section can be conveyed downwards only through the spiral feeding groove in the outer side wall of the feeding rod through rotation of the feeding rod, the outer side wall of the feeding rod is close to the inner wall of the first constant-diameter section, and downward leakage of the metal powder from the space between the outer side wall of the feeding rod and the inner wall of the first constant-diameter section is greatly reduced; after metal powder flowed from the spiral feed chute of feed rod lower extreme, metal powder can drop on the tray, because the tray rotates along with the feed rod, under the effect of centrifugal force, the metal powder after piling up the take the altitude all can be thrown away by the tray. After the metal powder of feed rod output reached the ration, feed rod stall, the metal powder that continues to flow from the spiral feed chute of feed rod under the action of gravity can continue to fall on the tray, according to piling up the principle, metal powder piles up always and highly will stop flowing when touchhing the lower extreme of feed rod and first constant diameter section, thereby metal powder's flow has been controlled like this, the lower problem of the metal powder weighing precision of output has been solved, still can continue to flow metal powder after metal powder has reached the weight that needs the output, do not receive the feed rod rotation and do not rotate the problem of control.
Specific embodiments of the present invention are disclosed in detail with reference to the following description and drawings, indicating the manner in which the principles of the invention may be employed. It should be understood that the embodiments of the invention are not so limited in scope. Features that are described and/or illustrated with respect to one embodiment may be used in the same way or in a similar way in one or more other embodiments, in combination with or instead of the features of the other embodiments.
Drawings
The drawings described herein are for illustration purposes only and are not intended to limit the scope of the present disclosure in any way. In addition, the shapes, the proportional sizes, and the like of the respective members in the drawings are merely schematic for facilitating the understanding of the present invention, and do not specifically limit the shapes, the proportional sizes, and the like of the respective members of the present invention. Those skilled in the art, having the benefit of the teachings of this invention, may choose from the various possible shapes and proportional sizes to implement the invention as a matter of case.
FIG. 1 is a schematic perspective view of a discharge device for quantitatively packaging powder according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view of a discharging device for quantitatively packaging powder in an embodiment of the present invention;
FIG. 3 is an enlarged view of a portion of FIG. 2;
FIG. 4 is a bottom view of an embodiment of the present invention for a powder portion package;
fig. 5 is a top view of a powder portion package according to an embodiment of the present invention.
Reference numerals of the above figures:
1. a feed rod; 2. a storage bin; 3. an outer jacket mechanism; 31. a jacket; 32. a first bolt; 33. a second bolt; 34. a third bolt; 4. an inner sleeve; 41. a first constant diameter section; 42. a gradual expansion section; 43. a second constant diameter section; 5. an adjustment member; 6. the discharging bin is covered; 7. a discharging bin; 8. a tray; 9. an elastic sleeve; 10. packaging the container; 11. a fourth bolt; 12. and a fifth bolt.
Detailed Description
The details of the present invention can be more clearly understood in conjunction with the accompanying drawings and the description of the embodiments of the present invention. However, the specific embodiments of the present invention described herein are for the purpose of illustration only and are not to be construed as limiting the invention in any way. Any possible variations based on the present invention may be conceived by the skilled person in the light of the teachings of the present invention, and these should be considered to fall within the scope of the present invention. It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "mounted," "connected," and "connected" are to be construed broadly and may include, for example, mechanical or electrical connections, communications between two elements, direct connections, indirect connections through intermediaries, and the like. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein in the description of the present application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
In order to solve the problem that the metal powder still flows out after the spiral feeding rod rotates to stop rotating during quantitative packaging, so as to improve the precision of quantitative weighing of the metal powder, a discharging device for quantitative packaging of powder is provided in the present application, fig. 1 is a schematic perspective view of the discharging device for quantitative packaging of powder in an embodiment of the present invention, fig. 2 is a sectional view of the discharging device for quantitative packaging of powder in an embodiment of the present invention, fig. 3 is a partially enlarged view in fig. 2, fig. 4 is a bottom view of the discharging device for quantitative packaging of powder in an embodiment of the present invention, fig. 5 is a top view of the discharging device for quantitative packaging of powder in an embodiment of the present invention, and as shown in fig. 1 to fig. 5, the discharging device for quantitative packaging of powder may include: the feeding rod 1 extends in the vertical direction and can rotate, and a spiral feeding groove is formed in the outer side wall of the feeding rod 1; the sleeve body mechanism is sleeved outside the feeding rod 1 and is provided with a first constant-diameter section 41 and an accommodating section positioned above the first constant-diameter section 41, the inner wall of the first constant-diameter section 41 is abutted against the outer side wall of the feeding rod 1, and the accommodating section and the feeding rod 1 are provided with an accommodating space for accommodating powder; tray 8 along horizontal direction extension, it is connected with feed rod 1 looks fixed connection, and is located the below of feed rod 1, and feed rod 1 projection on vertical direction is located tray 8 projection on vertical direction, has the clearance between the lower terminal surface of tray 8 and feed rod 1.
According to the discharging device, metal powder is placed in the accommodating section, the metal powder in the accommodating section can be conveyed downwards only through the spiral feeding groove in the outer side wall of the feeding rod 1 through rotation of the feeding rod 1, the outer side wall of the feeding rod 1 is close to the inner wall of the first constant-diameter section 41, and downward leakage of the metal powder from the space between the outer side wall of the feeding rod 1 and the inner wall of the first constant-diameter section 41 is greatly reduced; after metal powder flowed from the spiral feed chute of feed rod 1 lower extreme, metal powder can drop on tray 8, because tray 8 rotates along with feed rod 1, under the effect of centrifugal force, all can be thrown away by tray 8 to the metal powder after piling up the take the altitude. After the metal powder of 1 output of feed rod reached the ration, feed rod 1 stall, the metal powder that continues to flow from the spiral feed chute of feed rod 1 under the action of gravity can continue to fall on tray 8, according to piling up the principle, metal powder piles up always highly and will stop flowing when touchhing the lower extreme of feed rod 1 and first constant diameter section 41, thereby metal powder's flow has been controlled like this, the lower problem of the metal powder weighing precision of output has been solved, still can continue flowing metal powder after metal powder has reached the weight that needs the output, do not receive feed rod 1 to rotate and do not rotate the problem of control.
In order to better understand the discharge device for the quantitative packaging of powder in the present application, it will be further explained and illustrated below. As shown in fig. 1 to 3, the discharging device for quantitatively packaging powder includes: a feeding rod 1, a sleeve body mechanism and a tray 8. The feed rod 1 extends substantially vertically, and the upper end of the feed rod 1 can be in driving connection with a motor, in particular a rotating shaft with a seal. The feeding rod 1 is driven to rotate by the rotation of the motor, so that the feeding rod rotates around the center of the feeding rod. The feed rod 1 may be cylindrical, a spiral feed chute is formed in at least the outer side wall of the lower end of the feed rod 1, and powder is conveyed downwards from the spiral feed chute by rotation of the feed rod 1. When the feed rod 1 is rotated to convey the metal powder, the rotation speed of the feed rod 1 is 300R/MIN or less.
As shown in fig. 1 to 3, the sheath mechanism is sleeved outside the feeding rod 1. The jacket body mechanism has a first constant diameter section 41 and a receiving section located above the first constant diameter section 41. The first constant diameter section 41 may be located at the lowermost end of the jacket body means. The receiving section and the feed rod 1 have a receiving space for receiving the powder. The powder may be a metal powder. The inner wall of the first constant-diameter section 41 is close to the outer side wall of the feeding rod 1, and due to the characteristics of small particle size, high density and approximately spherical shape of the metal powder, the possibility that the metal powder leaks downwards between the inner wall of the first constant-diameter section 41 and the outer side wall of the feeding rod 1 can be effectively reduced no matter the feeding rod 1 rotates or does not rotate, and therefore the quantitative packaging precision is improved to the first degree. The first constant diameter section 41 specifically means that the inner diameters of the sections are all equal.
As shown in fig. 1 to 3, the sheath mechanism may include: an inner sleeve 4; the bin 2 is arranged above the inner sleeve 4; an outer sleeve mechanism 3 connecting the inner sleeve 4 and the storage bin 2. The lower end of the inner sleeve 4 is a first constant diameter section 41. The containing section comprises the upper end of the inner sleeve 4 and the bin 2. When the product powder is quantitatively packaged by using the discharging device in the application, the product powder is firstly filled in the bin 2, and a small amount of product powder enters the accommodating section at the upper end of the inner sleeve 4 to prepare to enter the spiral feeding groove of the feeding rod 1. The sleeve body mechanism is split into the inner sleeve 4 and the bin 2, so that the installation is convenient, otherwise, the volume and the length of a single part are overlarge, and the relative height between the lower end of the inner sleeve 4 and the lower end of the feeding rod 1 is not easy to adjust. Can be provided with observable transparent part on the feed bin 2, it can be made by organic glass, and transparent part has the trend of extending along vertical direction, and remaining powder condition in the feed bin 2 can be known to outside people through transparent part.
When the feed rod 1 is rotated to convey the metal powder, the inner wall of the silo 2 needs mirror polishing, and the precision RA is less than 0.16 UM. The silo 2 is made of steel plate, and the wall thickness thereof can be larger than 2MM so as to ensure enough strength and can store 300KG at one time.
As shown in fig. 2 to 3, the upper end of the inner sleeve 4 is a diverging section 42 from bottom to top and a second constant diameter section 43 located above the diverging section 42. The diverging section 42 is used to form a receiving space to form a partial receiving section. The taper of the diverging section 42 may be between 45 and 60 degrees. The lower end of the silo 2 has an outer edge which extends outwards in the circumferential direction. The outer jacket mechanism 3 includes an outer jacket 31 and first and second bolts 32 and 33. The outer sleeve 31 is sleeved outside the outer edge of the silo 2 and the divergent section 42 and the second constant-diameter section 43 of the inner sleeve 4, and the upper end of the outer sleeve 31 is provided with an inner edge extending inwards in the circumferential direction. The lower end surface of the inner edge is abutted against the upper end surface of the outer edge of the storage bin 2 so as to realize relative sealing.
As shown in fig. 3, a first bolt 32 is vertically penetrated through the outer and inner edges to fixedly couple the two. The first bolts 32 may be plural and distributed circumferentially around the axis of the outer sleeve 31. The upper end of the second constant diameter section 43 of the inner sleeve 4 can be abutted against the outer edge of the storage bin 2, and in order to ensure the sealing property, an annular groove can be formed in the upper end face of the second constant diameter section 43 of the inner sleeve 4, and a sealing ring is arranged in the annular groove.
As shown in fig. 3, the second bolt 33 penetrates the outer sleeve 31 in the radial direction and abuts against the outer side wall of the diverging section 42 of the inner sleeve 4. Because the second bolt 33 abuts against the outer side wall of the divergent section 42 of the inner sleeve 4, the screwing degree of the second bolt 33 can be adjusted through the taper of the divergent section 42, and the locking between the outer edge of the storage bin 2 and the inner sleeve 4 is realized by combining with the inner edge of the outer sleeve 31. The second bolts 33 may be plural and distributed circumferentially around the axis of the outer sleeve 31. When locking between the outer edge of the silo 2 and the inner sleeve 4 is not required, the height of the inner sleeve 4 in the vertical direction can be adjusted by the screwing degree of the second bolt 33.
As shown in fig. 3, the inner diameter of the second constant diameter section 43 of the inner sleeve 4 is larger than the inner diameter of the lower end of the silo 2, so that the entering spiral feeding chute has a buffer area, which can make the falling powder loose in a larger space, so as to enter the spiral feeding chute and avoid the powder from being extruded by the upper part and being stuck at the lower end of the silo 2 and not falling downwards.
As shown in fig. 3, the outer sleeve mechanism 3 further comprises a third bolt 34, and the third bolt 34 penetrates the outer sleeve 31 in the radial direction and abuts against the outer side wall of the second constant diameter section 43 of the inner sleeve 4. The third bolt 34 is mainly used for realizing the fixed locking between the outer sleeve 31 and the inner sleeve 4 and avoiding the shaking between the outer sleeve 31 and the inner sleeve. Likewise, the third bolts 34 may be plural, and are circumferentially distributed around the axis of the outer sleeve 31. Of course, the inner diameter of the outer sleeve 31 may be equal to the outer diameter of the second constant diameter section 43 of the inner sleeve 4 and the outer diameter of the outer edge of the silo 2, so that the stability may be improved.
As shown in fig. 2 and 3, the tray 8 extends in a horizontal direction, is fixedly connected to the feed rod 1, and is located below the feed rod 1. The projection of the feed rod 1 in the vertical direction is located in the projection of the tray 8 in the vertical direction, and when metal powder flows out from the spiral feed chute at the lower end of the feed rod 1, the metal powder can fall on the tray 8. Have the clearance between the lower terminal surface of tray 8 and feed rod 1, because tray 8 rotates along with feed rod 1, under the effect of centrifugal force, pile up the metal powder after the take the altitude and all can be thrown away by tray 8, drop down after through above-mentioned clearance and get into to packaging container 10. After the metal powder of 1 output of feed rod reached the ration, feed rod 1 stall, metal powder that continues to flow from the spiral feed chute of feed rod 1 under the action of gravity can continue to fall on tray 8, according to piling up the principle, metal powder piles up the size that highly reaches the clearance always and will stop flowing when will touch feed rod 1 and the lower extreme of first constant diameter section 41, thereby metal powder's flow has been controlled, the lower problem of the metal powder precision of weighing of output has been solved, still can continue to flow metal powder after metal powder has reached the weight that needs the output, do not receive feed rod 1 rotation and the problem of not rotating control. As a practical matter, the projection of the tray 8 is generally circular, and the center of the tray 8 is connected to the center of the feeding rod 1, so as to ensure that the tray 8 and the feeding rod 1 rotate coaxially, thereby ensuring that the centrifugal force at the edge of the tray 8 is equal.
As shown in fig. 2 and 3, the central region of the upper end surface of the tray 8 is recessed relative to the peripheral region. The powder accumulated on the tray 8 does not easily collapse and fall off when the feed rod 1 is not rotated, so that the accuracy of quantitative packaging is affected. When the feed bar 1 is rotated to convey the metal powder, the edge of the tray 8 is inclined upward at an angle of between 30 and 45 degrees with respect to the horizontal direction.
As shown in fig. 2 and 3, the discharging device for quantitative packaging of powder may include: adjusting part 5, the middle part of tray 8 has the trompil, and adjusting part 5 passes the trompil of tray 8 and is fixed mutually with tray 8, and the middle part of feed rod 1 lower extreme is twisted in to the upper end of adjusting part 5 and is fixed mutually with feed rod 1. Particularly, have the external screw thread on the regulating part 5, its cover is equipped with 3 nuts, and after regulating part 5 twisted the middle part of 1 lower extreme of feed rod, a nut can upwards be screwed up in order to support the lower terminal surface of 1 of feed rod to realize regulating part 5's firm fixed, can not take place random rotation. Be used for setting up tray 8 between 2 nuts in addition, when screwing up between two nuts, can fix tray 8. By adjusting the height of the two nuts, the height of the tray 8 can be adjusted. When the feeding rod 1 rotates to convey the metal powder, the distance between the lower end surface of the feeding rod 1 and the tray 8 is 15MM-20MM, so that the metal powder can be always accumulated to reach the size of a gap to touch the lower ends of the feeding rod 1 and the first constant-diameter section 41 after the feeding rod 1 stops rotating, and the metal powder in the spiral feeding groove of the feeding rod 1 stops flowing out.
As shown in fig. 1 to 3, the discharging device for quantitatively packaging powder further includes: the discharging bin 7 is arranged below the feeding rod 1. The upper end of the discharging bin 7 is a tapered section from top to bottom, and as feasible, the taper of the tapered section needs to be less than or equal to 30 degrees to ensure the smooth falling of the powder on the inner wall. The upper end of the tapered section of the discharge bin 7 has an inner edge extending inwards in the circumferential direction, and the inner edge of the discharge bin 7 forms an opening. The diameter of the opening is larger than the outer diameter of the first constant diameter section 41, so that the powder output downwards by the feeding rod 1 can fall into the discharging bin 7 through the opening. Tray 8 is located the convergent section of play feed bin 7, and the powder that throws away from tray 8 all drops downwards along the convergent section in the convergent section that is collected, the problem that the powder flies upward can not appear. The upper end surface of the discharge bin 7 is equal to or higher than the lower end surface of the first constant diameter section 41, so that the powder thrown from the tray 8 is difficult to float out of the discharge bin 7 through the opening. When the feeding rod 1 rotates to convey the metal powder, the outer diameter of the tray 8 is larger than the outer diameter of the first constant-diameter section 41 by between 20MM and 30MM, so that after the feeding rod 1 stops rotating, the metal powder on the tray 8 can be always accumulated to reach the size of a gap to touch the lower ends of the feeding rod 1 and the first constant-diameter section 41, and the metal powder in the spiral feeding groove of the feeding rod 1 stops flowing out.
As shown in fig. 2 to 3, a plurality of first nuts are fixed to an outer side wall of the first constant diameter section 41, and the plurality of first nuts are located at the same height. The first nut has a fourth bolt 11 screwed therein, the fourth bolt 11 extending in a radial direction. The first constant diameter section 41 outer sleeve 31 is provided with a discharge bin upper cover 6, and the feed bin 2 upper cover is arranged on the fourth bolt 11. The first nut is used for supporting the discharging bin upper cover 6. The welding has the fifth bolt 12 that extends along vertical direction on the inner edge of play feed bin 7, and during the through-hole of feed bin 2 upper cover was worn to establish by fifth bolt 12, the second nut was twisted in order to support feed bin 2 upper cover to the upper end of fifth bolt 12. The height of the screwed second nut can be used for conveniently adjusting the distance between the discharge bin upper cover 6 and the discharge bin 7 so as to adapt to different types of powder. Go out feed bin upper cover 6 can form certain sheltering from to the opening of going out feed bin 7 to reduce the possibility that the powder flies upward to appear. When the feeding rod 1 rotates to convey the metal powder, the distance between the discharging bin upper cover 6 and the upper end face of the discharging bin 7 is between 20MM and 40 MM.
As shown in fig. 1 and 2, the lower end of the discharge bin 7 and a packaging container 10 for quantitatively receiving the powder can be connected by an elastic sleeve 9. The upper end of the elastic sleeve 9 is fixed at the lower end outlet of the discharging bin 7, for example, fixed at the lower end of the discharging bin 7 through a hoop. The lower end of the elastic sleeve 9 can be mounted at any time on the port of the packaging container 10, and can also be removed at any time, for example, the upper end of the packaging container 10 is provided with a thread, so that the elastic sleeve 9 can be clamped at the inlet of the packaging container 10 through elasticity. A packaging container 10. The lower end of the packaging container 10 is placed flat on an electronic scale to achieve quantitative packaging. And the elastic fixing mode is adopted, so that the sealing is reliable. Also effectively solved like this when the unloading is rotated to feed rod 1, the fine powder of powder can fly upward from packaging container 10 and spill over the problem, has stopped the potential safety hazard of dust, and the powder that falls down simultaneously is kept apart with air circumstance, has promoted the quality and the packing efficiency of product. By means of the continuously repeatable placement of the packaging containers 10, the stability and continuity of the packaging is ensured until the complete packaging of the powder in the silo 2 is completed.
The elastic sleeve 9 can be made of rubber, the thickness of the elastic sleeve is 0.5MM to 1MM, the diameter size of the elastic sleeve is 5MM to 10MM smaller than the diameter of the lower end of the packaging container 10 and the discharging bin 7, and the height of the elastic sleeve is 50MM to 100MM larger than the distance between the packaging container 10 and the discharging bin 7, so that when weighing is lowered, the rubber sleeve can be lowered to ensure the weighing precision.
A discharging device for powder ration packing in this application has following advantage and beneficial effect:
the sleeve body mechanism in the application is designed in a mode that the inner sleeve 4 and the outer sleeve 31 are combined, the center of the inner sleeve 4 can be adjusted, and the inner sleeve and the feeding rod 1 are coaxial. Meanwhile, the tray 8 is designed, when the feeding is stopped, the powder flows out of the feeding rod 1 and falls onto the tray 8, and the powder stops flowing after being accumulated to a certain degree; the powder is thrown out according to the centrifugal action when the feeding is started, the powder weighing precision can be controlled to be less than 1 percent, and the problem that the powder can continuously flow out from the feeding rod 1 after the powder weighing requirement is met is solved.
All there is the assorted sealing connection of design in each junction in this application, goes out feed bin 7 and packaging container 10 connected mode and adopts elastic sleeve 9, can install packaging container 10 at any time on, adopts the elastic fixation mode, and is sealed reliable, solves when feed rod 1 rotates the unloading, and the fine powder of powder can fly upward the problem that comes out from packaging container 10, stops the dust potential safety hazard. Meanwhile, the isolation of the falling powder from the air environment is ensured, the product quality and the packaging efficiency are improved, the plastic cans can be continuously and repeatedly placed, and the stability and the continuity of packaging are ensured.
The device is independent in structural design, simple to mount and dismount, convenient to operate, simple in process flow, high in safety, simple and practical in device part design, convenient to clean, especially suitable for producing relatively universal metal powder, such as stainless steel, high-temperature alloy, die steel, nickel-based alloy, high-melting-point metal (niobium, molybdenum, chromium, platinum and the like), especially metal 3D printing powder, the sphericity psi of microscopic particles is more than or equal to 85%, the powder fluidity is less than or equal to 20S/50G, and the quantitative packaging of the metal powder with the granularity of 15UM-53UM has very high precision.
All articles and references disclosed, including patent applications and publications, are hereby incorporated by reference for all purposes. The term "consisting essentially of …" describing a combination shall include the identified element, ingredient, component or step as well as other elements, ingredients, components or steps that do not materially affect the basic novel characteristics of the combination. The use of the terms "comprising" or "including" to describe combinations of elements, components, or steps herein also contemplates embodiments that consist essentially of such elements, components, or steps. By using the term "may" herein, it is intended to indicate that any of the described attributes that "may" include are optional. A plurality of elements, components, parts or steps can be provided by a single integrated element, component, part or step. Alternatively, a single integrated element, component, part or step may be divided into separate plural elements, components, parts or steps. The disclosure of "a" or "an" to describe an element, ingredient, component or step is not intended to foreclose other elements, ingredients, components or steps.
The embodiments in the present specification are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.
Claims (10)
1. A discharging device for quantitative powder packaging is characterized by comprising:
the feeding rod extends in the vertical direction and can rotate, and a spiral feeding groove is formed in the outer side wall of the feeding rod;
the sleeve body mechanism is sleeved outside the feeding rod and is provided with a first constant-diameter section and an accommodating section positioned above the first constant-diameter section, the inner wall of the first constant-diameter section is close to the outer side wall of the feeding rod, and the accommodating section and the feeding rod are provided with accommodating spaces for accommodating powder;
the tray extends along the horizontal direction, is fixedly connected with the feeding rod and is positioned below the feeding rod, the projection of the feeding rod in the vertical direction is positioned in the projection of the tray in the vertical direction, and a gap is formed between the tray and the lower end surface of the feeding rod.
2. The discharging device for quantitative powder packaging of claim 1, wherein the discharging device for quantitative powder packaging comprises: the middle part of the tray is provided with an opening, the adjusting piece penetrates through the opening of the tray and is fixed with the tray, and the upper end of the adjusting piece is screwed into the middle part of the lower end of the feeding rod and is fixed with the feeding rod.
3. The discharging device for quantitatively packaging powders as claimed in claim 1, wherein the tray has an upper end surface with a central region which is recessed with respect to a peripheral region.
4. The discharging device for quantitative powder packaging of claim 1, wherein the sheath mechanism comprises: an inner sleeve; the bin is arranged above the inner sleeve; the outer sleeve mechanism is connected with the inner sleeve and the storage bin; the lower end of the inner sleeve is the first constant-diameter section; the accommodating section comprises the upper end of the inner sleeve and the bin.
5. The discharging device for quantitatively packaging powder as claimed in claim 4, wherein the upper end of the inner sleeve is a gradually expanding section from bottom to top and a second constant diameter section located above the gradually expanding section; the lower end of the bin is provided with an outer edge extending outwards in the circumferential direction; the outer sleeve mechanism comprises an outer sleeve, a first bolt and a second bolt, the outer sleeve is sleeved outside the outer edge of the storage bin and the gradual expansion section and the second constant diameter section of the inner sleeve, the upper end of the outer sleeve is provided with an inner edge extending inwards in the circumferential direction, the lower end face of the inner edge is abutted against the upper end face of the outer edge of the storage bin, and the first bolt penetrates into the outer edge and the inner edge along the vertical direction to enable the outer edge and the inner edge to be fixedly connected; and the second bolt penetrates through the outer sleeve along the radial direction and props against the outer side wall of the gradually expanding section of the inner sleeve.
6. The dispensing device for powder dose packaging of claim 5, wherein said second plurality of bolts is circumferentially distributed about the axis of said outer sleeve.
7. The dispensing device of claim 5, wherein the outer sleeve means further comprises a third bolt that penetrates the outer sleeve in a radial direction and abuts against an outer sidewall of the second constant diameter section of the inner sleeve.
8. The discharging device for quantitative powder packaging of claim 1, further comprising: the upper end of the discharge bin is a tapered section from top to bottom, the upper end of the tapered section of the discharge bin is provided with an inner edge extending inwards in the circumferential direction, and the inner edge of the discharge bin forms an opening; the tray is positioned in the reducing section of the discharging bin; the diameter of the opening is larger than the outer diameter of the first constant-diameter section; the upper end surface of the discharging bin is equal to or higher than the lower end surface of the first constant-diameter section.
9. The discharging device for quantitative powder packaging of claim 8, wherein a plurality of first nuts are fixed on the outer side wall of the first constant diameter section, and the first nuts are located at the same height; a fourth bolt is screwed into the first nut, and the fourth bolt extends along the radial direction; a discharge bin upper cover is sleeved outside the first constant-diameter section and arranged on the fourth bolt; the inner edge of the discharging bin is welded with a fifth bolt extending in the vertical direction, the fifth bolt penetrates through a through hole of the upper cover of the bin, and the upper end of the fifth bolt is screwed into a second nut to abut against the upper cover of the bin.
10. The discharging device for quantitative powder packaging of claim 9, wherein the distance between the lower end surface of the feeding rod and the tray is 15mm-20 mm; the distance between the upper cover of the discharging bin and the upper end surface of the discharging bin is 20-40 mm; the rotating speed of the feeding rod is less than or equal to 300 r/min; the outer diameter of the tray is between 20mm and 30mm larger than the outer diameter of the first constant diameter section.
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| CN202110740965.4A CN113401380B (en) | 2021-06-30 | 2021-06-30 | Discharging device for quantitative powder packaging |
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