Airflow split charging and metering device of strip packaging machine

Abstract

The invention discloses an airflow sub-packaging metering device of a strip packaging machine, which relates to the technical field of medical sub-packaging equipment and comprises an airflow hopper, a metering transmission assembly, a metering assembly, a material taking assembly and a blanking pipe, the airflow hopper is installed on the main machine through the fixing frame assembly and internally used for storing materials. The metering transmission assembly is installed on the fixing frame assembly and located below the airflow hopper. The metering assembly is erected on the metering transmission assembly, the metering transmission assembly is used for driving the metering assembly to move, and the metering assembly is used for sucking and transferring materials; the material taking assembly communicates with the bottom of the airflow hopper through a hose and is used for facilitating material suction of the metering assembly. The discharging pipe communicates with the material taking assembly and is used for feeding the materials sucked by the metering assembly into the carton bag. Through the arrangement, the filling quantity precision and the filling speed during filling of the strip packaging machine can be improved.

Description

Technical Field

[0001] The invention relates to the technical field of medical packaging equipment, and in particular to an airflow packaging metering device for a strip packing machine. Background Art

[0002] The strip packing machine is a device that uses flexible packaging materials to pack powders, granules, and other contents in strips. It has the functions of online bag making, metering, filling, and forming and sealing. When filling powder, the existing strip packing machine mostly adopts the screw metering method. The principle of the screw metering method is that the material is pushed from the feed port to the discharge port by the rotation of the screw in the fixed cavity. The volume of the material output per revolution is fixed, thereby achieving quantitative filling. The screw metering accuracy mainly depends on the screw pitch, diameter, rotation speed and material density stability. The filling weight is determined by the number of revolutions of the feeding screw, which will be affected by the properties of the powder itself. Powder leakage or powder compaction without feeding is prone to occur during the filling process, affecting the filling accuracy, and the fastest filling speed of the equipment will not exceed 45 cuts / minute. When existing strip packing machines are filling granules, they mostly use the measuring cup slider to measure. The basic principle of measuring cup measurement is the volumetric value principle. The material is filled in a measuring cup (or "measuring cup cavity") with a preset fixed volume, and the filling is completed by gravity or mechanical push. The single filling amount = measuring cup volume × material density. The accuracy depends on the processing accuracy of the measuring cup and the stability of the material density. The filling weight is determined by the volume of the measuring cup. When measuring, the measuring cup is filled by the weight of the granules themselves, and the scraper scrapes it flat. Affected by the properties of the granules themselves, it is easy for the material to be filled in the measuring cup below 1g, and there are cavities inside, which affects the filling accuracy, and the fastest filling speed of the equipment will not exceed 45 cuts / minute.

[0003] The main defects of the screw metering method are: (1) Strong dependence on material properties: If the material density fluctuates (such as agglomeration due to moisture or particle breakage), the actual loading amount is likely to deviate from the theoretical value and requires frequent calibration. Viscous materials may adhere to the screw or the inner wall of the chamber, resulting in residue and metering errors. (2) Mechanical wear and maintenance costs: After long-term use, the gap between the screw and the chamber increases due to wear, reducing the metering accuracy and requiring regular replacement of parts. Disassembly and cleaning are complicated, especially when handling different materials, which is prone to cross-contamination. A quick-disassembly structure or self-cleaning function needs to be designed. (3) Conflict between speed and accuracy: High-speed rotation is prone to material extrusion heating or uneven filling, requiring a balance between efficiency and accuracy.

[0004] The main defects of the measuring cup type are as follows: (1) Limited material adaptability: It has strict requirements for the fluidity of the material. Poor fluidity (such as fine powder and easily caking materials) is likely to cause uneven filling or residue, and the error can reach more than ±5%. When the particle shape is irregular (such as the tablet tilting and jamming) or the density is uneven, the actual filling volume fluctuates significantly. (2) Precision is strongly related to density: If the material density changes (such as being affected by moisture or batch differences), it is necessary to manually replace the measuring cup or adjust the filling parameters, and automatic compensation cannot be achieved. Fine powder is prone to stratification during vibration filling, resulting in differences in filling volume within the same batch. (3) Limitations of the mechanical structure: When running at high speed, friction between the scraping mechanism and the measuring cup may generate debris (posing a pollution risk to the pharmaceutical and food industries). The volume of the measuring cup is fixed, and it is difficult to measure small doses (such as less than 1 g). Customized micro measuring cups are required, which are costly.

[0005] Therefore, how to improve the filling accuracy and filling speed of the strip packing machine during filling is a technical problem that those skilled in the art need to solve currently. Summary of the Invention

[0006] The object of the present invention is to provide an air flow dispensing and metering device for a strip packing machine, which can improve the filling accuracy and filling speed of the strip packing machine during filling.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] An air flow dispensing and metering device for a strip packing machine, comprising:

[0009] An air flow hopper, which is installed on the main machine through a fixed frame assembly and is used for storing materials inside;

[0010] A metering transmission assembly, which is installed on the fixed frame assembly and is located below the air flow hopper;

[0011] A metering assembly, which is mounted on the metering transmission assembly. The metering transmission assembly is used to drive the metering assembly to move, and the metering assembly is used to suck and transfer materials;

[0012] A material taking assembly, which is connected to the bottom of the air flow hopper through a hose and is used to facilitate the metering assembly to suck materials;

[0013] A blanking pipe, which is connected to the material taking assembly and is used to introduce the materials sucked by the metering assembly into the strip package.

[0014] Preferably, the fixed frame assembly includes: two support arms and a fixed frame bottom plate. The two support arms are respectively installed on both sides of the metering transmission assembly. The air flow hopper is mounted on the upper side of the support arms. The two support arms are vertically installed on the fixed frame bottom plate, and the fixed frame bottom plate is installed on the top of the main machine.

[0015] Preferably, the side wall of the airflow hopper is provided with a first material level sensor and a second material level sensor, the first material level sensor is used to prevent the material in the airflow hopper from overflowing, and the second material level sensor is used to prevent the material in the airflow hopper from being too little, and the bottom of the airflow hopper is fixedly connected to a powder suction pipe fixing block, and a plurality of suction pipes are evenly distributed on the lower side of the powder suction pipe fixing block, and the suction pipes are used to connect to the hose.

[0016] Preferably, the metering transmission assembly comprises:

[0017] Two sets of horizontal guide frames, the horizontal guide frames include two horizontal guide seats and a horizontal guide shaft arranged between the two horizontal guide seats, and the horizontal guide seats are installed on the inner side of the support arm;

[0018] Two front and rear motion bases are movably mounted on the horizontal guide shaft, respectively, and the metering assembly is mounted between the two front and rear motion bases;

[0019] The front and rear transmission shafts are rotatably installed between the two arms, and the front and rear main swing arms are installed at both ends of the front and rear transmission shafts. The front and rear main swing arms are connected to the transition joint mounting plates installed on the front and rear motion bases through the front and rear connecting rods;

[0020] The first servo motor is installed on the bottom plate of the fixing frame through a first motor support seat, and the movable end of the first servo motor is drivingly connected to the front and rear transmission shafts.

[0021] Preferably, the metering transmission assembly further comprises:

[0022] A vertical guide shaft is arranged on the forward and backward motion base, and the vertical guide shaft is perpendicular to the horizontal guide shaft;

[0023] The metering component mounting seat is movably sleeved on the vertical guide shaft, and the metering component is installed between the two front and rear motion bases through the metering component mounting seat. A guide groove parallel to the horizontal guide shaft is provided on the side of the metering component mounting seat away from the metering component;

[0024] The eccentric shaft of the swing rod has an eccentric shaft section at one end thereof, the eccentric shaft section is inserted into the guide groove, the eccentric shaft of the swing rod is installed on the support arm through a bearing, and the eccentric shaft of the swing rod is passed through the strip hole of the front and rear motion base;

[0025] The upper and lower transmission shafts are rotatably installed between the two arms, and the ends of the upper and lower transmission shafts are installed with upper and lower secondary swing rods, and one end of the upper and lower secondary swing rods is connected to the upper and lower tertiary swing rods installed at the ends of the eccentric shafts of the swing rods through the upper and lower secondary connecting rods;

[0026] The second servo motor is installed on the bottom plate of the fixed frame through the second motor support seat. The movable end of the second servo motor is provided with an upper and lower main swing rod. The ends of the upper and lower main swing rods are transmission connected with the other ends of the upper and lower secondary swing rods through upper and lower primary connecting rods.

[0027] Preferably, the metering assembly includes:

[0028] A fixed horizontal plate for the metering die, which is a plate-like structure, and its two ends are connected to the metering assembly mounting seat through metering positioning pins and metering positioning screws;

[0029] A number of metering dies are evenly and spacedly inserted into the fixed horizontal plate for the metering die;

[0030] An outer fixed vertical plate is installed on the lower side of the fixed horizontal plate for the metering die and is located on one side of the metering die;

[0031] An inner fixed vertical plate is installed on the lower side of the fixed horizontal plate for the metering die and is located on the other side of the metering die. An arched groove is provided at the position corresponding to the metering die on the inner fixed vertical plate, and the arched groove is used for the connection between the air pipe and the metering die.

[0032] Preferably, the material taking assembly includes:

[0033] A material taking base plate, which is a plate-like structure, and its two ends are installed on the main machine through material taking mounting blocks;

[0034] A number of material taking blocks are spaced and evenly arranged on the material taking base plate. A blanking hole is provided in the middle of the material taking block. A blanking pipe is installed on the lower side of the material taking block and is communicated with the blanking hole. Material taking holes are respectively provided on both sides of the blanking hole. A material taking elbow pipe communicated with the material taking hole is also provided on the lower side of the material taking block, and the material taking elbow pipe is communicated with a flexible pipe.

[0035] Preferably, the metering die includes:

[0036] A die base, inside which two mutually parallel material suction cavities are provided. A material suction port communicated with the material suction cavity is provided at the bottom end of the die base, and the material suction port can cooperate with the material taking hole to suck materials;

[0037] Two metering plungers are respectively inserted into the material suction cavities for sucking materials from the material taking holes.

[0038] Preferably, the metering die further includes:

[0039] An adjusting stud is threadedly connected to the middle of the die base;

[0040] An adjusting base plate is sleeved on the outer periphery of the adjusting stud and is threadedly connected thereto. The adjusting base plate is fixedly connected to the top end of the metering plunger.

[0041] Preferably, a material taking upper gasket made of polytetrafluoroethylene is laid on the upper side of the material taking block to prevent the metering die from colliding with the material taking block;

[0042] The material taking elbow pipe and the flexible pipe are in interference fit to ensure the airtightness during the material taking process.

[0043] Compared with the above background art, the airflow sub-packaging and metering device provided by the present invention has the following beneficial effects:

[0044] A relatively large cavity is provided inside the airflow hopper, and the inside can hold the materials to be packaged. A material taking assembly is provided below the airflow hopper, and the material taking assembly is also connected to the opening at the bottom of the airflow hopper through a hose. That is to say, the materials can be discharged from the airflow hopper through the hose to the material taking assembly, and the material taking assembly is also connected with a blanking pipe, and the blanking pipe can be directly communicated with the strip package to be filled; at the same time, a metering assembly is provided above the material taking assembly, and the metering assembly can accurately suck a quantitative amount of materials from the material taking assembly and then transfer them to the blanking pipe for release under the drive of the metering transmission assembly, and then repeat the steps of sucking and releasing, so as to complete the quantitative sub-packaging of the strip package; in this way, the sub-packaging of the materials can be completed accurately and quickly. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention, and for those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0046] Figure 1 Schematic installation structure diagram of the airflow sub-packaging and metering device provided by the embodiment of the present invention;

[0047] Figure 2 Schematic structure diagram of the airflow sub-packaging and metering device provided by the embodiment of the present invention;

[0048] Figure 3 Schematic structure diagram of the fixing frame assembly provided by the embodiment of the present invention;

[0049] Figure 4 Schematic structure diagram of the airflow hopper provided by the embodiment of the present invention;

[0050] Figure 5 Schematic structure diagram of the metering transmission assembly provided by the embodiment of the present invention;

[0051] Figure 6 Partial schematic structure diagram of the metering transmission assembly provided by the embodiment of the present invention;

[0052] Figure 7 Top view of the metering transmission assembly provided by the embodiment of the present invention;

[0053] Figure 8 For Figure 6 Another perspective structure diagram;

[0054] Figure 9 is Figure 7 a sectional view of;

[0055] Figure 10 is Figure 6 a sectional view;

[0056] Figure 11 is a schematic structural view of the metering assembly provided by the embodiment of the present invention;

[0057] Figure 12 is Figure 11 a structural view from another angle;

[0058] Figure 13 is a schematic structural view of the metering mold provided by the embodiment of the present invention;

[0059] Figure 14 is a schematic structural view of the cooperation of the air flow hopper, the material taking assembly and the metering mold provided by the embodiment of the present invention;

[0060] Figure 15 is a schematic structural view of the material taking assembly provided by the embodiment of the present invention;

[0061] Figure 16 is a sectional view of the metering mold provided by the embodiment of the present invention;

[0062] Figure 17 is a schematic view of the first state of the metering mold and the material taking assembly provided by the embodiment of the present invention;

[0063] Figure 18 is a schematic view of the second state of the metering mold and the material taking assembly provided by the embodiment of the present invention.

[0064] Wherein:

[0065] 01 - main machine;

[0066] 1 - air flow hopper, 101 - first level sensor, 102 - second level sensor, 103 - powder suction pipe fixing block, 104 - material suction pipe, 105 - hose;

[0067] 2 - Metering drive assembly, 201 - First servo motor, 2011 - First motor support base, 2012 - Motor adjustment plate, 202 - Motor pulley, 203 - Transmission shaft pulley, 204 - Front and rear transmission shafts, 205 - Front and rear main swing rods, 206 - Front and rear connecting rods, 207 - Transition joint mounting plate, 208 - Front and rear motion bases, 2081 - Slot, 209 - Horizontal guide base, 210 - Horizontal guide shaft, 211 - Second servo motor, 2111 - Second motor support base, 212 - Upper and lower main swing rods, 213 - Upper and lower first - stage connecting rods, 214 - Upper and lower second - stage swing rods, 215 - Upper and lower transmission shafts, 216 - Upper and lower second - stage connecting rods, 217 - Upper and lower third - stage swing rods, 218 - Swing rod eccentric shaft, 219 - Vertical guide shaft, 220 - Metering assembly mounting seat;

[0068] 3 - Metering assembly, 301 - Fixed horizontal plate, 302 - Outer fixed vertical plate, 303 - Inner fixed vertical plate, 3031 - Arch - shaped groove, 304 - Metering die, 3041 - Adjusting stud, 3042 - Adjusting base plate, 3043 - Metering plunger, 30431 - Plunger body, 30432 - Sintered mesh filter element, 3044 - Die base, 30441 - Suction port, 3045 - Adjusting stud spacer, 3046 - Quick - connect air joint;

[0069] 4 - Material - taking assembly, 401 - Material - taking elbow, 402 - Material - taking block, 4021 - Discharge hole, 4022 - Material - taking hole, 403 - Gasket on material - taking block, 404 - Material - taking base plate, 405 - Material - taking mounting block;

[0070] 5 - Discharge pipe;

[0071] 6 - Fixed - frame assembly, 601 - Arm, 602 - Fixed - frame bottom plate. Detailed implementation mode

[0072] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0073] In order to enable those skilled in the art in this technical field to better understand the solution of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific implementation modes.

[0074] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by terms such as "upper", "lower", "front", "rear", "left" and "right" is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the indicated position or element must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation of the present invention.

[0075] The object of the present invention is to provide an air-flow dispensing and metering device for a strip-packaging machine, which can improve the filling accuracy and filling speed during the filling of the strip-packaging machine.

[0076] To achieve the above object, the present invention provides the following technical solutions:

[0077] Please refer to Figures 1 to 18 , this embodiment provides an air-flow dispensing and metering device for a strip-packaging machine, including: an air-flow hopper 1, a metering drive assembly 2, a metering assembly 3, a material-taking assembly 4 and a blanking pipe 5; the air-flow hopper 1 is installed on the main machine 01 through a fixed-frame assembly 6, and its interior is used for storing materials; the metering drive assembly 2 is installed on the fixed-frame assembly 6 and is located below the air-flow hopper 1; the metering assembly 3 is erected on the metering drive assembly 2, the metering drive assembly 2 is used to drive the metering assembly 3 to move, and the metering assembly 3 is used to suck and transfer materials; the material-taking assembly 4 is communicated with the bottom of the air-flow hopper 1 through a hose 105 for facilitating the metering assembly 3 to suck materials; the blanking pipe 5 is communicated with the material-taking assembly 4 for feeding the materials sucked by the metering assembly 3 into the strip-pack.

[0078] Specifically, a relatively large cavity is provided inside the air-flow hopper 1, which can hold the materials to be packaged. A material-taking assembly 4 is provided below the air-flow hopper 1, and the material-taking assembly 4 is also connected to the opening at the bottom of the air-flow hopper 1 through a hose 105. That is to say, the materials can be discharged from the air-flow hopper 1 through the hose 105 to the material-taking assembly 4, and the material-taking assembly 4 is also connected to a blanking pipe 5, and the blanking pipe 5 can be directly communicated with the strip-pack to be filled; at the same time, a metering assembly 3 is provided above the material-taking assembly 4. The metering assembly 3 can accurately suck a fixed amount of materials from the material-taking assembly 4 and then transfer them to the blanking pipe 5 for release under the drive of the metering drive assembly 2, and then repeat the steps of sucking and releasing, so as to complete the quantitative packaging of the strip-pack; in this way, the packaging of the materials can be completed accurately and quickly.

[0079] Preferably, the fixed-frame assembly 6 includes: two support arms 601 and a fixed-frame bottom plate 602. The two support arms 601 are respectively installed on both sides of the metering drive assembly 2, the air-flow hopper 1 is erected on the upper side of the support arms 601, the two support arms 601 are vertically installed on the fixed-frame bottom plate 602, and the fixed-frame bottom plate 602 is installed on the top of the main machine 01.

[0080] Specifically, as shown in Figure 1 andFigure 3 As shown in the figure, the metering drive assembly 2 and the metering assembly 3 are arranged between two arms 601, and the air flow hopper 1 is supported on the upper ends of the two arms 601 through two support rods. The two arms 601 are installed on the fixed frame bottom plate 602 through bolts at the bottom, and the fixed frame bottom plate 602 is fixed on the top of the main machine 01 of the strip packing machine through bolts at the bottom.

[0081] Preferably, the side wall of the air flow hopper 1 is provided with a first level sensor 101 and a second level sensor 102. The first level sensor 101 is used to prevent the material in the air flow hopper 1 from overflowing, and the second level sensor 102 is used to prevent the material in the air flow hopper 1 from being too little. The bottom of the air flow hopper 1 is fixedly connected with a powder suction pipe fixing block 103, and a plurality of material suction pipes 104 are evenly distributed on the lower side of the powder suction pipe fixing block 103. The material suction pipes 104 are used to connect the flexible pipe 105.

[0082] As Figure 4 shown in the figure, the air flow hopper 1 is a funnel-shaped structure with a square cross-section, and it can be supported on two arm members 601 through two parallel support rods; it can be understood that in this embodiment, in order to facilitate the operator to timely judge the remaining amount of the material in the air flow hopper 1, the first level sensor 101 and the second level sensor 102 are respectively arranged at appropriate height positions on the side wall of the air flow hopper 1. Among them, the first level sensor 101 is arranged at a higher position, that is, near the top opening of the air flow hopper 1. When the first level sensor 101 detects the material, it can remind the operator that the material in the air flow hopper 1 has been fully stored, and the material can be prevented from overflowing from the air flow hopper 1; the second level sensor 102 is arranged at a lower position, that is, near the bottom opening of the air flow hopper 1. When the second level sensor 102 detects the material, it can remind the operator that the material in the air flow hopper 1 is about to be finished packaging, that is, the material in the air flow hopper 1 is about to be consumed, and the operator can be reminded to replenish the material in time.

[0083] A plurality of groups of material suction pipes 104 are installed at the bottom opening of the air flow hopper 1 through the powder suction pipe fixing block 103. The arrangement of the material suction pipes 104 facilitates the installation and connection of the flexible pipe 105 between the air flow hopper 1 and the material taking assembly 4; moreover, the arrangement of a plurality of groups of material suction pipes 104 can simultaneously package multiple strip packages, so that the packaging efficiency can be improved.

[0084] Preferably, the metering drive assembly 2 includes: two groups of horizontal guide frames, two front and rear moving bases 208, a front and rear transmission shaft 204, and a first servo motor 201; each group of horizontal guide frames includes two horizontal guide seats 209 and a horizontal guide shaft 210 disposed between the two horizontal guide seats 209, and the horizontal guide seats 209 are installed on the inner side of the support arm 601; the two front and rear moving bases 208 are respectively movably installed on the horizontal guide shaft 210, and the metering assembly 3 is erected between the two front and rear moving bases 208; the front and rear transmission shaft 204 is rotatably installed between the two support arms 601, and front and rear main swing rods 205 are installed at both ends of the front and rear transmission shaft 204, and the front and rear main swing rods 205 are connected to a transition joint mounting plate 207 installed on the front and rear moving base 208 through front and rear connecting rods 206; the first servo motor 201 is installed on the fixed frame bottom plate 602 through a first motor support seat 2011, and the movable end of the first servo motor 201 is in transmission connection with the front and rear transmission shaft 204.

[0085] Specifically, as Figures 5 to 9 shown, four horizontal guide seats 209 are fixed to the inner side of the support arm 601 in pairs through bolts, and the horizontal guide shaft 210 is inserted between the two horizontal guide seats 209 to form a horizontal guide frame. The two front and rear moving bases 208 are respectively sleeved on the horizontal guide shafts 210 on the left and right sides, so that the front and rear moving bases 208 can only perform horizontal movement. The transition joint mounting plate 207 is fixed to the front and rear moving base 208 through bolts. Through the front and rear connecting rods 206 and the front and rear main swing rods 205, the front and rear main swing rods 205 rotate synchronously with the front and rear transmission shaft 204. A transmission shaft pulley 203 is fixedly installed on the front and rear transmission shaft 204. At the same time, a first servo motor 201 is installed through a first motor support seat 2011 at the position corresponding to the transmission shaft pulley 203. The first servo motor 201 is installed on a motor adjustment plate 2012, and the motor adjustment plate 2012 is installed on the first motor support seat 2011. At the same time, a motor pulley 202 is installed at the movable end of the first servo motor 201, and the motor pulley 202 can be in transmission connection with the transmission shaft pulley 203 through a synchronous belt. When there is a deviation in the positions of the motor pulley 202 and the transmission shaft pulley 203, resulting in inappropriate tightness of the synchronous belt, the position of the motor adjustment plate 2012 can be adjusted to ensure the tension of the synchronous belt; in this way, the first servo motor 201 can be used to drive the metering assembly 3 to perform horizontal movement back and forth.

[0086] Preferably, the metering drive assembly 2 further includes: a vertical guide shaft 219, a metering assembly mounting base 220, a swing rod eccentric shaft 218, an upper and lower transmission shaft 215, and a second servo motor 211; the vertical guide shaft 219 is disposed on the front and rear movement base 208, and the vertical guide shaft 219 is perpendicular to the horizontal guide shaft 210; the metering assembly mounting base 220 is movably sleeved on the vertical guide shaft 219, and the metering assembly 3 is mounted between the two front and rear movement bases 208 through the metering assembly mounting base 220. A guide groove parallel to the horizontal guide shaft 210 is provided on the side of the metering assembly mounting base 220 facing away from the metering assembly 3; one end of the swing rod eccentric shaft 218 is provided with an eccentric shaft section, and the eccentric shaft section is inserted into the guide groove. The swing rod eccentric shaft 218 is mounted on the support arm 601 through a bearing, and the swing rod eccentric shaft 218 passes through the strip hole 2081 of the front and rear movement base 208; the upper and lower transmission shaft 215 is rotatably mounted between the two support arms 601, and upper and lower secondary swing rods 214 are mounted at the ends of the upper and lower transmission shaft 215. One end of the upper and lower secondary swing rods 214 is connected to an upper and lower tertiary swing rod 217 mounted at the end of the swing rod eccentric shaft 218 through an upper and lower secondary connecting rod 216; the second servo motor 211 is mounted on the fixed frame bottom plate 602 through a second motor support base 2111. An upper and lower main swing rod 212 is provided at the movable end of the second servo motor 211. The end of the upper and lower main swing rod 212 is drivingly connected to the other end of the upper and lower secondary swing rods 214 through an upper and lower primary connecting rod 213.

[0087] In this embodiment, two vertical guide shafts 219 are respectively vertically inserted into the middle parts of both sides of the front and rear movement base 208. The metering assembly mounting base 220 is movably sleeved on the vertical guide shafts 219, so that the metering assembly mounting base 220 can only perform vertical movement; in this embodiment, the second servo motor 211 is mounted on the fixed frame bottom plate 602 through the second motor support base 2111. The upper and lower main swing rod 212 is connected to the movable end of the second servo motor 211 through a key and a bolt to transmit the swinging movement of the second servo motor 211. The upper and lower main swing rod 212 and the bottom end of the upper and lower secondary swing rods 214 are connected through an upper and lower primary connecting rod 213. The middle parts of the upper and lower secondary swing rods 214 are fixed to both ends of the upper and lower transmission shaft 215 through bolts; however, it should be noted that since only one second servo motor 211 is provided, one of the upper and lower secondary swing rods 214 is only drivingly connected to the upper and lower secondary connecting rod 216 and is not connected to the second servo motor 211. However, the upper and lower transmission shaft 215 can drive the two upper and lower main swing rods 212 to act synchronously; the top end of the upper and lower secondary swing rods 214 is connected to the upper and lower tertiary swing rod 217 through an upper and lower secondary connecting rod 216. The swing rod eccentric shaft 218 passes through the support arm 601 and the strip hole 2081 of the front and rear movement base 208 in sequence and is inserted into the guide groove of the metering assembly mounting base 220, and the end inserted into the guide groove is set as an eccentric shaft structure, specifically as Figure 10As shown in the figure, that is to say, when the swing rod eccentric shaft 218 rotates, the metering component mounting seat 220 will move up and down under the action of the eccentric shaft structure. Due to the setting of the vertical guide shaft 219, the metering component mounting seat 220 will perform vertical movement along its axis. It should be noted that since the metering component 3 will also perform horizontal movement back and forth, therefore, the guide groove also extends in the horizontal direction like the strip-shaped hole 2081 of the front and back movement base 208, so that the metering component 3 can perform horizontal movement back and forth and vertical movement under the drive of the metering transmission component 2.

[0088] Specifically, as Figure 10 shown, the metering component 3 is installed on the metering component mounting seat 220 through bolts, and then the front, back, up and down movements of the metering component 3 can be completed by controlling the swinging movements of the first servo motor 201 and the second servo motor 211.

[0089] Preferably, the metering component 3 includes: a fixed horizontal plate 301, a plurality of metering molds 304, an outer fixed vertical plate 302 and an inner fixed vertical plate 303; the fixed horizontal plate 301 is a plate-like structure, and its two end parts are connected to the metering component mounting seat 220 through metering positioning pins and metering positioning screws; a plurality of metering molds 304 are evenly and spacedly inserted into the fixed horizontal plate 301, the outer fixed vertical plate 302 is installed on the lower side of the fixed horizontal plate 301 and is located on one side of the metering mold 304; the inner fixed vertical plate 303 is installed on the lower side of the fixed horizontal plate 301 and is located on the other side of the metering mold 304. An arched groove 3031 is provided at the position of the inner fixed vertical plate 303 corresponding to the metering mold 304, and the arched groove 3031 is used for the connection between the air pipe and the metering mold 304.

[0090] Please refer to Figure 11 and Figure 12 , in this embodiment, in order to improve the sub-packaging efficiency, multiple groups of metering molds 304 for transporting materials are provided in the metering component 3, and these are evenly inserted into the fixed horizontal plate 301 at a certain interval. The two ends of the fixed horizontal plate 301 are installed on the metering component mounting seat 220 through metering positioning pins and metering positioning screws. At the same time, in order to enhance the strength of the mold fixed horizontal plate 301 and prevent it from bending and deforming, an outer fixed vertical plate 302 and an inner fixed vertical plate 303 are respectively provided on its lower side. The outer fixed vertical plate 302 and the inner fixed vertical plate 303 can also play a role in restricting the metering mold 304. At the same time, in order to facilitate the connection between the metering mold 304 and the gas source, a U-shaped arched groove 3031 is provided at each position of the inner fixed vertical plate 303 corresponding to the metering mold 304, and the air pipe connected to the metering mold 304 can just be clamped in the arched groove 3031.

[0091] Preferably, the material taking assembly 4 includes: a material taking base plate 404 and a plurality of material taking blocks 402; the material taking base plate 404 is a plate-like structure, and its two ends are installed on the main machine 01 through the material taking mounting blocks 405; a plurality of material taking blocks 402 are arranged on the material taking base plate 404 at intervals and evenly, a blanking hole 4021 is arranged in the middle of the material taking block 402, the blanking pipe 5 is installed on the lower side of the material taking block 402 and is communicated with the blanking hole 4021, material taking holes 4022 are respectively arranged on both sides of the blanking hole 4021, a material taking elbow pipe 401 communicated with the material taking hole 4022 is further arranged on the lower side of the material taking block 402, and the material taking elbow pipe 401 is communicated with the flexible pipe 105.

[0092] As Figure 15 and Figure 16 shown, in this embodiment, a plurality of material taking blocks 402 are installed on the main machine 01 through the material taking base plate 404 and the material taking mounting blocks 405. Each material taking block 402 is provided with three holes with the same spacing. The middle one is the blanking hole 4021. The blanking pipe 5 is communicated below the blanking hole 4021. Each time the material sucked by the metering die 304 will be released at the blanking hole 4021 and enter the strip package through the blanking pipe 5. The holes at both sides of the blanking hole 4021 are the material taking holes 4022. The lower side of the material taking hole 4022 is communicated with a material taking elbow pipe 401. The material taking elbow pipe 401 is further communicated with the suction pipe 104 below the air flow hopper 1 through the flexible pipe 105. That is to say, the material is introduced into the material taking hole 4022 through the flexible pipe 105 to facilitate the suction of the metering die 304; thus arranged, by setting two material taking holes 4022, the material packaging efficiency can be improved as much as possible.

[0093] Preferably, the metering die 304 includes: a die base 3044 and two metering plungers 3043; the die base 3044 has two mutually parallel suction cavities arranged inside, a suction port 30441 communicated with the suction cavities is arranged at the bottom end of the die base 3044, and the suction port 30441 can cooperate with the material taking hole 4022 to suck the material; two metering plungers 3043 are respectively inserted into the suction cavities for sucking the material from the material taking hole 4022.

[0094] Specifically as Figure 13 and Figure 14 shown, the die base 3044 is a square structure as a whole. Two suction cavities for installing the metering plungers 3043 are vertically arranged inside it. The lower end of the suction cavity is the suction port 30441. It should be noted that the spacing between the two suction ports 30441 is equal to the spacing between the material taking hole 4022 and the blanking hole 4021 on the material taking block 402; a connecting convex block for facilitating installation on the fixed cross plate 301 is arranged on one side of the die base 3044, and a quick-connect air joint 3046 communicated with the metering plunger 3043 is installed on the other side, so that it is convenient for the operator to quickly connect the metering die 304 and the air source.

[0095] Further, the metering die 304 further includes: an adjusting stud 3041 and an adjusting substrate 3042; the adjusting stud 3041 is threadedly connected to the middle of the die base 3044; the adjusting substrate 3042 is sleeved on the outer periphery of the adjusting stud 3041 and is threadedly connected thereto, and the adjusting substrate 3042 is fixedly connected to the top end of the metering plunger 3043.

[0096] That is to say, the metering die 304 is composed of an adjusting stud 3041, an adjusting substrate 3042, a metering plunger 3043, a die base 3044, an adjusting stud spacer 3045, and a quick-connect air joint 3046.

[0097] The metering plunger 3043 is composed of a plunger main body 30431 and a metal sintered mesh filter element 30432. One end of the plunger main body 30431 is embedded in the metal sintered mesh filter element 30432, and internal threads are tapped at the other end of the plunger main body 30431; an outer thread is provided on the circumferential portion of the middle section of the adjusting stud 3041, and it can be connected to the threaded hole in the middle of the adjusting substrate 3042 through threads. A square hole is opened in the middle of the upper end of the die base 3044, and the adjusting stud spacer 3045 is placed in the middle square hole. The adjusting stud 3041 is threadedly screwed into the middle position of the die base 3044 and inserted into the adjusting stud spacer 3045. There is a threaded hole in the middle of the adjusting stud spacer 3045, and the adjusting stud 3041 is fixed in the adjusting stud spacer 3045 through a setscrew so that it can only perform rotational movement; one end of the metering plunger 3043 is inserted into the suction cavity of the die base 3044, and the other end is connected to the adjusting substrate 3042 through a bolt; by rotating the adjusting stud 3041, the metering plunger 3043 can move up and down in the suction cavity of the die base 3044, thereby changing the filling cavity of the metering die 304, and thus the total amount of material sucked by the metering die 304 each time can be adjusted.

[0098] Preferably, a metering block upper gasket 403 made of polytetrafluoroethylene is laid on the upper side of the material taking block 402 to prevent the metering die 304 from colliding with the material taking block 402; the material taking elbow 401 and the hose 105 are in interference fit to ensure the airtightness during the material taking process.

[0099] In this embodiment, the material taking elbow 401 and the hose 105 are in interference fit, which can ensure the airtightness during the sub-packaging process and prevent the leakage of materials; the material taking elbow 401 and the material taking block 402 are in interference fit plus a sealing ring, and the material taking elbow 401 can rotate in the material taking block 402, which is convenient for connecting with the hose 105; the metering block upper gasket 403 is made of polytetrafluoroethylene and is fixed to the material taking block 402 through bolts. Avoid hard contact with the metering assembly 3.

[0100] In summary, this embodiment provides a gas flow packaging and metering device for a strip packaging machine, which includes a gas flow hopper 1, a metering drive assembly 2, a metering assembly 3, a material taking assembly 4, a blanking pipe 5, and a device fixing frame; a plurality of groups of material suction pipes 104 are provided at the bottom end of the gas flow hopper 1, and these material suction pipes 104 are all connected to the material taking block 402 through hoses 105. It should be noted that in this embodiment, the numbers of the material suction pipes 104, the material taking blocks 402, and the metering molds 304 correspond one by one; in this embodiment, the metering mold 304 in the metering assembly 3 can perform horizontal movement back and forth and vertical movement in the metering drive assembly 2. The actions of the metering mold 304 are mainly used for sucking and releasing materials. The specific process is as follows: As Figure 17 and Figure 18 shown, on the left and right sides of the blanking hole 4021 on the material taking block 402 in this embodiment are respectively a material taking hole 4022(A) and a material taking hole 4022(B). The metering mold 304 has two position states compared with the material taking block 402. The first is Figure 17 shown. At this time, the metering mold 304 moves to the left. At this time, the suction port 30441(I) on the left side of the metering mold 304 is aligned with the material taking hole 4022(A), and the suction port 30441(II) on the right side of the metering mold 304 is aligned with the blanking hole 4021(C); then the metering drive assembly 2 controls the metering mold 304 to move downward and insert into the material taking hole 4022(A). The suction port 30441(I) is connected to vacuum to suck materials through the material taking hole 4022(A). The materials enter the cavity of the suction port 30441(I). If there are materials in the cavity of the suction port 30441(II), the materials will be discharged through compressed air and discharged into the strip package through the blanking hole 4021(C); then the metering drive assembly 2 controls the metering mold 304 to move upward and then move to the right. At this time, the suction port 30441(I) is aligned with the blanking hole 4021(C), and the suction port 30441(II) is aligned with the material taking hole 4022(B); then, the metering drive assembly 2 controls the metering mold 304 to move downward and insert into the material taking hole 4022(B). The suction port 30441(I) is connected to compressed air to discharge materials, which are discharged into the strip package through the blanking hole 4021(C). The suction port 30441(II) is connected to vacuum to suck materials through the material taking hole 4022(B). The materials enter the cavity of the suction port 30441(II); repeating this process can perform the metering and filling of powders / granules. With such a setting, the packaging of multiple strip packages can be carried out continuously, thereby improving the packaging efficiency. Moreover, in this embodiment, the accuracy of packaging can be improved by sucking materials with the metering mold 304.

[0101] It should be noted that in this specification, relational terms such as first and second are only used to distinguish one entity from several other entities, and do not necessarily require or imply any actual relationship or order between these entities.

[0102] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments, and the same or similar parts among the various embodiments can be referred to each other.

[0103] The above has introduced the embodiments provided by the present invention in detail. Specific examples are used herein to elaborate on the principles and implementation manners of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art of the present technology, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the present invention.

Claims

1. An air flow dispensing and metering device for a strip packing machine, characterized in that, include: The airflow hopper is installed on the main machine through a fixing frame assembly, and the inside of the hopper is used to store materials; A metering transmission assembly is mounted on the fixing frame assembly and is located below the airflow hopper; A metering component is mounted on the metering transmission component, the metering transmission component is used to drive the metering component to move, and the metering component is used to absorb and transport materials; A material taking component is connected to the bottom of the air flow hopper through a hose, and is used to facilitate the metering component to absorb materials; The material discharge pipe is connected to the material taking component and is used to pass the material sucked by the metering component into the strip bag.

2. The strip-packaging machine air flow sub-packaging and metering device according to claim 1, wherein The fixed frame assembly includes: two support arms and a fixed frame bottom plate, the two support arms are respectively installed on both sides of the metering transmission assembly, the airflow hopper is mounted on the upper side of the support arms, the two support arms are vertically installed on the fixed frame bottom plate, and the fixed frame bottom plate is installed on the top of the main machine.

3. The strip-packing machine air flow sub-packaging and metering device according to claim 2, wherein The side wall of the airflow hopper is provided with a first material level sensor and a second material level sensor, the first material level sensor is used to prevent the material in the airflow hopper from overflowing, and the second material level sensor is used to prevent the material in the airflow hopper from being too little, and the bottom of the airflow hopper is fixedly connected to a powder suction pipe fixing block, and a plurality of suction pipes are evenly distributed on the lower side of the powder suction pipe fixing block, and the suction pipe is used to connect the hose.

4. The airflow sub-packaging and metering device of the strip-packaging machine according to claim 3, characterized in that, The metering transmission assembly comprises: Two sets of horizontal guide frames, each of which comprises two horizontal guide seats and a horizontal guide shaft disposed between the two horizontal guide seats, and each of which is mounted on the inner side of the support arm; Two forward and backward motion bases are respectively movably mounted on the horizontal guide shaft, and the metering assembly is mounted between the two forward and backward motion bases; Front and rear transmission shafts are rotatably mounted between the two support arms, and front and rear main swing arms are mounted on both ends of the front and rear transmission shafts. The front and rear main swing arms are connected to transition joint mounting plates mounted on the front and rear motion bases through front and rear connecting rods; The first servo motor is installed on the bottom plate of the fixing frame through a first motor support seat, and the movable end of the first servo motor is drivingly connected to the front and rear transmission shafts.

5. The airflow sub-packaging and metering device of the strip-packaging machine according to claim 4, characterized in that, The metering transmission assembly also includes: A vertical guide shaft, disposed on the forward and backward motion base, and the vertical guide shaft is perpendicular to the horizontal guide shaft; A metering assembly mounting seat, movably sleeved on the vertical guide shaft, the metering assembly is mounted between the two forward and backward motion bases through the metering assembly mounting seat, and a guide groove parallel to the horizontal guide shaft is provided on a side of the metering assembly mounting seat away from the metering assembly; The eccentric shaft of the swing rod has an eccentric shaft section at one end thereof, the eccentric shaft section is inserted into the guide groove, the eccentric shaft of the swing rod is installed on the support arm through a bearing, and the eccentric shaft of the swing rod is passed through the strip hole of the forward and backward motion base; An upper and lower transmission shaft is rotatably installed between the two supporting arms, and an upper and lower secondary swing rod is installed at the end of the upper and lower transmission shaft, and one end of the upper and lower secondary swing rod is connected to an upper and lower tertiary swing rod installed at the end of the eccentric shaft of the swing rod through an upper and lower secondary connecting rod; The second servo motor is mounted on the bottom plate of the fixed frame through a second motor support seat. An upper and lower main swing rod is arranged at the movable end of the second servo motor. The end of the upper and lower main swing rod is drivingly connected to the other end of the upper and lower secondary swing rod through an upper and lower primary connecting rod.

6. The strip-packaging machine air flow dispensing and metering device according to claim 5, characterized in that, The metering assembly includes: A metering die fixing cross plate, which is a plate-like structure. Its two ends are connected to the metering assembly mounting seat through metering positioning pins and metering positioning screws; A plurality of metering dies, which are evenly and spacedly inserted into the metering die fixing cross plate; An outer fixed vertical plate, which is mounted on the lower side of the metering die fixing cross plate and is located on one side of the metering die; An inner fixed vertical plate, which is mounted on the lower side of the metering die fixing cross plate and is located on the other side of the metering die. An arched groove is provided at the position of the inner fixed vertical plate corresponding to the metering die. The arched groove is used for the connection of the air pipe and the metering die.

7. The strip-packing machine air flow sub-packaging and metering device according to claim 6, characterized in that, The material taking assembly includes: A material taking base plate, which is a plate-like structure. Its two ends are mounted on the main machine through material taking mounting blocks; A plurality of material taking blocks, which are spaced and evenly arranged on the material taking base plate. A material discharging hole is provided in the middle of the material taking block. The material discharging pipe is mounted on the lower side of the material taking block and is communicated with the material discharging hole. Material taking holes are respectively provided on both sides of the material discharging hole. A material taking elbow pipe communicated with the material taking hole is also provided on the lower side of the material taking block. The material taking elbow pipe is communicated with the flexible pipe.

8. The airflow sub-packaging and metering device of the strip-packaging machine according to claim 7, characterized in that, The metering die includes: A die base, in which two mutually parallel material suction cavities are arranged. A material suction port communicated with the material suction cavity is provided at the bottom end of the die base. The material suction port can cooperate with the material taking hole to suck materials; Two metering plungers, which are respectively inserted into the material suction cavities to suck materials from the material taking hole.

9. The airflow sub-packaging metering device of the strip-packaging machine according to claim 8, characterized in that, The metering die further includes: An adjusting stud, which is threadedly connected to the middle of the die base; An adjusting base plate, which is sleeved on the outer periphery of the adjusting stud and is threadedly connected to it. The adjusting base plate is fixedly connected to the top end of the metering plunger.

10. The airstream sub-packaging and metering device of a strip-packaging machine according to claim 8, characterized in that, A material taking block upper gasket made of polytetrafluoroethylene is laid on the upper side of the material taking block to prevent the metering die from colliding with the material taking block; The material taking elbow pipe and the flexible pipe are in interference fit to ensure the airtightness during the material taking process.

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