A material supply mechanism

Abstract

The present invention relates to the technical field of packaging, and particularly to a material supply mechanism. A material supply mechanism includes a second conveying unit, and the second conveying unit includes a material temporary storage platform for temporarily storing materials. At least one side of the material temporary storage platform is provided with a material discharging plate; at the upper surface of the material temporary storage platform, a scraping plate is arranged which can push the materials out of the upper surface and into the material discharging plate; the material discharging plate can perform a lateral opening and closing action to form a blanking opening convenient for blanking. A material buffer bin with an upward-facing bin opening for receiving materials is arranged directly below the blanking opening. The bin cavity of the material buffer bin and the lower plate surface of the material discharging plate cooperate to form a receiving cavity for accommodating materials; openings are provided at both ends of the material buffer bin, and a first pushing unit for pushing the materials out of the material buffer bin acting on the head of the materials is arranged at one of the openings, and the other opening constitutes the discharge port of the material buffer bin. This structure can provide structural support for the orderly entry of materials into the next process.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and particularly to a material supply mechanism. Background Art

[0002] Currently, all nut packaging is intensive manual or semi-manual operation, without guarantee in terms of safety, hygiene and accuracy, with a high rework rate and large secondary waste. Specifically: on the one hand, pure manual or semi-manual operation causes high labor intensity for employees, easy fatigue, negative emotions, and is prone to errors; on the other hand, manually taking consumables, using foolproof auxiliary equipment, manually opening bags, sealing, packing, reworking, and even transporting back and forth between workstations are all in the same space, which is prone to congestion, resulting in low overall work efficiency and low packaging accuracy. Based on this, the present application provides a novel material supply mechanism, which can be used as part of an automated production line, thus providing a basic guarantee for the automated production of nuts and various soft packages. Summary of the Invention

[0003] The object of the present invention is to overcome the above-mentioned deficiencies of the prior art, and provide a structurally reasonable and practical material supply mechanism, which can be used as part of an automated production line, and can orderly and efficiently send the materials in the previous process to the next process, with the advantages of high automation degree and precise and stable movement.

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

[0005] A material supply mechanism includes a second conveying unit. The second conveying unit includes a material temporary storage platform for temporarily storing materials, and at least one side of the material temporary storage platform is provided with a material placing plate; a scraping plate capable of pushing the materials out of the upper surface of the material temporary storage platform and falling onto the material placing plate is arranged at the upper surface of the material temporary storage platform; the material placing plate can perform a horizontal opening and closing action to form a material dropping opening convenient for material dropping, and a material buffer bin with an upward opening for receiving materials is arranged directly below the material dropping opening. The bin cavity of the material buffer bin and the lower plate surface of the material placing plate jointly form a receiving cavity for accommodating materials; openings are provided at both ends of the material buffer bin, and a first pushing unit for pushing the materials out of the material buffer bin by acting on the head of the materials is arranged at one of the openings, and the other opening constitutes the discharge port of the material buffer bin.

[0006] The advantages of the present invention are as follows:

[0007] (1) In the present invention, the materials are first located on the material temporary storage platform, and the scraping plate scrapes the materials onto the material placing plate. When there is no material in the material buffer bin, the material placing plate moves, enabling the materials to fall into the material buffer bin, and then the first pushing unit pushes the materials out of the material buffer bin. This structure can provide structural support for the orderly entry of materials into the next process.

[0008] (2) The first material shaping unit shapes the material in the material buffer bin to facilitate the material to enter the packaging bag better.

[0009] (3) The movable plate is arc-shaped or has a certain angle with the horizontal direction, so that the material to be shaped can be well wrapped.

[0010] (4) Two material buffer bins, as well as the material discharge plate and material temporary storage platform installed on the material buffer bins, can realize the rotation distribution and temporary storage of materials in an orderly manner, thereby greatly improving the material sorting, distribution and feeding efficiency.

[0011] (5) The auxiliary material-dropping component in this solution is a blowing part, which faces the material buffer bin. On the one hand, it can accelerate the material to enter the buffer bin; on the other hand, it can also make the material sink quickly in the buffer bin, thus achieving multiple goals at one stroke.

[0012] (6) The first conveying unit provides the second conveying unit with relatively orderly materials. After the second photoelectric component detects the arrival of the materials, it drives the scraper to distribute the materials to the buffer bins on both sides in an orderly manner. At the same time, when the first photoelectric detection component detects that the distance between adjacent materials is too small, the control mechanism controls the start of the unloading component. The unloading component can use a compressed air nozzle to blow the materials off, or a cylinder to push the materials off.

[0013] (7) The stopper can ensure that the soft bag is in the correct state required for filling behind the first conveyor belt.

[0014] (8) The material diverting conveying unit is arranged at the front end of the first conveying unit. When the mechanism behind the device has no material demand, the material diverting conveying unit diverts the material for conveying and does not flow into the first conveying unit.

[0015] (9) The purpose of setting the curved plate or inclined plate is to better guide the material.

[0016] It should be noted that the present invention mainly protects the structural support for ensuring that materials enter the next process in an orderly manner, but does not protect the software part thereof. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is the overall diagram of the system.

[0018] Figure 2 This is a three-dimensional diagram of the material supply mechanism.

[0019] Figure 3 It is a three-dimensional view of the material diverting and conveying unit.

[0020] Figure 4 It is a three-dimensional diagram of the first conveying unit.

[0021] Figure 5 is a three-dimensional diagram of the second conveying unit.

[0022] Figure 6 and Figure 7 are cross-sectional views at the second conveying unit and the first material shaping unit.

[0023] Figure 8 is a perspective view of the packaging bag supply mechanism.

[0024] Figure 9 is a bottom view of the bag bin.

[0025] Figure 10 is a perspective view of the bag transporting mechanism and the finished product output mechanism on the bag transporting mechanism.

[0026] Figure 11A 、 Figure 11B and Figure 11C are cross-sectional views of the pushing and feeding mechanism.

[0027] Figure 12 is a structural diagram of the first guide groove.

[0028] Figure 13 is a structural diagram of the second pushing unit.

[0029] Figure 14 is a structural diagram of the bag opening and filling mechanism, the bag transporting mechanism, and the first flapping unit.

[0030] Figure 15 、 Figure 16 and Figure 17 are structural diagrams of the bag opening and discharging unit.

[0031] Figure 18 is a perspective view of the bract-like body.

[0032] Figure 19 is a schematic perspective structural diagram of the bag supporting plate.

[0033] Figure 20 is a schematic diagram of the layout position of the shaping mechanism.

[0034] Figure 21 Structural diagram of the first flapping unit.

[0035] Figure 22 and Figure 23 are structural diagrams of the shaping mechanism.

[0036] Figure 24 、 Figure 25 and Figure 26 are structural diagrams of the horizontal shaping part.

[0037] Figure 27 and Figure 28 are structural diagrams of the vertical shaping part.

[0038] Figure 29Schematic three-dimensional structure diagram of the crease assembly.

[0039] Figure 30 and Figure 31 Structural diagram of the sealing mechanism.

[0040] Figure 32 Schematic three-dimensional installation state diagram of the bag pressing unit and the heat insulation block.

[0041] Figure 33 Institutional diagram of a partial sealing unit.

[0042] The meanings of the reference symbols in the figure are as follows:

[0043] 1 - Material supply mechanism 10 - General support frame

[0044] 100 - Material turning and conveying unit 101 - Main conveyor belt 102 - Paddle assembly 1021 - First rotating pin

[0045] 1022 - Partition board 1023 - Steering paddle 1024 - Second rotating pin 1025 - Arc groove

[0046] 103 - First steering drive 1031 - Steering support 1032 - Steering power unit 104 - Arc plate

[0047] 110 - First conveying unit 111 - First conveyor belt 112 - First photoelectric detection component

[0048] 113 - Discharging assembly 114 - Stop piece 1151 - First baffle 1152 - Second baffle 1153 - Third baffle

[0049] 120 - Second conveying unit 121 - First material buffer bin 122 - Second material buffer bin

[0050] 123 - Scraping component 1231 - Scraping plate 1232 - Scraping drive 124 - Second photoelectric detection component

[0051] 125 - Feeding plate 126 - Material temporary storage platform 127 - Auxiliary blanking component

[0052] 130 - First material shaping unit 131 - First shaping drive 132 - First shaping moving plate

[0053] 140 - First pusher unit

[0054] 2 - Packaging bag supply mechanism

[0055] 210 - Bag bin 2101 - Bin panel 2102 - Arc frame 2103 - Bag blocking piece

[0056] 220 - First suction bag unit 2201 - First suction cup 2202 - First suction bag drive

[0057] 2203 - Suction cup connecting piece

[0058] 230 - Third photoelectric detection component

[0059] 3 - Bag conveying mechanism 300 - Second conveyor belt 301 - Second conveyor drive 302 - Side support plate

[0060] 303 - Partition board 304 - Bag bottom baffle 305 - Bag supporting plate

[0061] 3110 - Bag head 3111 - Bag bottom

[0062] 4 - Transfer and pushing mechanism 410 - Feeding and turning unit 4101 - First guide groove 4102 - Second turning drive

[0063] 4103 - Second guide groove 4014 - Transition channel

[0064] 420 - Second pushing unit 4201 - Push rod

[0065] 4202 - Contact component 42021 - Pushing piece 42022 - Protrusion 421 - Material blocking part

[0066] 5 - Bag opening and filling mechanism 500 - Second suction cup unit

[0067] 501 - Second suction cup group 5011 - Suction cup connecting rod

[0068] 502 - Second suction cup drive 5021 - Rotating disk 5022 - Suction cup rotating power component

[0069] 5023 - First rotating shaft 5024 - Second rotating shaft 5025 - Bag opening guide rail

[0070] 5026 - Front end connecting rod 5027 - Rear end connecting rod

[0071] 504 - First elastic component

[0072] 510 - Bag supporting and discharging unit 511 - First bivalve body 512 - Second bivalve body 5110 - Detection hole

[0073] 513 - Rotating drive 514 - Power rod

[0074] 6 - Shaping mechanism 600 - First flapping unit 601 - Flapping cylinder 602 - Flapping plate

[0075] 610 - Second flapping unit

[0076] 620 - First bag mouth shaping unit 6210 - Horizontal shaping component 6211 - Horizontal shaping support plate

[0077] 6212 - Horizontal shaping part 62121 - First rotating rod 62122 - Second rotating rod 62123 - Fixed seat

[0078] 62124 - Horizontal shaping plate 62125 - Horizontal shaping drive

[0079] 6220 - Vertical shaping component 6221 - Vertical support plate

[0080] 62221 - First support plate 62222 - Second guide rod 62223 - Third support plate

[0081] 62224 - Fourth guide rod

[0082] 6223 - Moving plate

[0083] 6224 - Vertical shaping drive 62241 - Circular turntable 62242 - Ring power component

[0084] 62243 - Third rotating shaft 62244 - Fourth rotating shaft 62245 - Bent connecting rod

[0085] 6225 - First vertical shaping plate 6226 - Second vertical shaping plate

[0086] 6230 - Shaping distance drive

[0087] 6240 - Crease component 6241 - Crease drive 6242 - Crease block

[0088] 62421 - Crease connecting block 62422 - Crease straight plate 62423 - Crease inclined plate

[0089] 630 - Shaping blow air pipe

[0090] 7 - Sealing mechanism 710 - Pressing bag and sealing component 711 - Heat insulation block 712 - Sealing unit

[0091] 7121 - Sealing block 7122 - Heating element 7123 - High temperature resistant rubber plate 7124 - High temperature anti - sticking adhesive tape

[0092] 7125 - Temperature measuring element

[0093] 713 - Pressing bag unit 7131 - Pressing bag transition plate group 7132 - Pressing bag straight plate 7133 - Pressing bag inclined plate

[0094] 720 - Sealing drive 730 - Sealing fixed plate

[0095] 741 - Sliding bearing 742 - Position adjusting plate 743 - Handle 744 - Position adjusting guide shaft

[0096] 745 - Adjusting lead screw

[0097] 8 - Finished product output mechanism 81 - Feeding baffle 82 - Feeding drive mechanism

[0098] 9 - Control mechanism 10 - Support frame Detailed implementation mode

[0099] As Figures 1 - 32 shown, the entire system of the present invention includes a general support frame 10 and a material supply mechanism 1 fixed on the general support frame 10 to supply the materials to be packaged;

[0100] A packaging bag supply mechanism 2 for realizing the supply function of packaging bags;

[0101] A bag transporting mechanism 3 for moving the packaging bags at different workstations;

[0102] A conveying and pushing mechanism 4 for conveying the materials falling from the material supply mechanism and pushing the materials into the packaging bags;

[0103] An opening and filling mechanism 5 for opening the packaging bags and putting the materials into them;

[0104] A shaping mechanism 6 for shaping the opening of the packaging bag to prepare for sealing;

[0105] A sealing mechanism 7 for sealing the packaging bags;

[0106] A finished product output mechanism 8 for outputting the finished products to the next process.

[0107] A control mechanism 9 for obtaining the signals of the sensors in the device and controlling all the driving operations;

[0108] After the material supply mechanism 1 and the packaging bag supply mechanism 2 supply materials and packaging bags respectively, the materials are put into the packaging bags through the opening and filling mechanism 5. Subsequently, the packaging bags are first shaped by the shaping mechanism 6, then sealed by the sealing mechanism 7, and finally output to the next process through the finished product output mechanism 8. The above-mentioned travel path of the packaging bags is completely realized by the bag transporting mechanism 3 with an inclined transport surface. To ensure the above-mentioned motion functions, as Figure 1 shown, the entire bag transporting mechanism 3 can be regarded as a road, extending along the processing directions of the packaging bag supply mechanism 2, the shaping mechanism 6, the sealing mechanism 7 and the finished product output mechanism 8, so as to play the function of orderly connecting and transporting the materials at each process, and further ensuring the continuity, efficiency and fast rhythm of the overall processing structure.

[0109] For better understanding of the specific structure of the present invention, the following describes each mechanism in detail:

[0110] 1. Material supply mechanism

[0111] As Figures 2 - 7 shown, the material supply mechanism 1 includes a material turning and conveying unit 100, a first conveying unit 110, a second conveying unit 120, a first material shaping unit 130, and a first pusher unit 140. The material turning and conveying unit 100 is arranged at the front end of the first conveying unit 110. When there is no material demand from the mechanism behind the device, the material turning and conveying unit 100 turns and conveys the material, and the material will not flow onto the first conveying unit 110.

[0112] As Figure 3 shown, the material turning and conveying unit 100 includes a main conveyor belt 101, a baffle plate assembly 102, and a first turning drive 103 for driving the turning of the turning baffle 1023. The width of the main conveyor belt 101 is greater than the width of the first conveyor belt 111 in the first conveying unit 110. The first turning drive 103 includes a turning support 1031 fixed on the turning baffle plates on both sides of the main conveyor belt 101. Turning baffle plates are arranged on both sides of the main conveyor belt 101. A turning power part 1032 is arranged on the turning support 1031. The baffle plate assembly 102 includes a first rotating pin 1021, a partition plate 1022, a turning baffle 1023, and a second rotating pin 1024. One end side of the turning baffle 1023 is connected to the partition plate 1022 through the first rotating pin 1021. The driving end of the turning power part 1032 is connected to the second rotating pin 1024. The second rotating pin 1024 is arranged at a position near the middle of the turning baffle 1023. An arc-shaped groove 1025 for guiding the second rotating pin 1024 is arranged on the turning support 1031. The second rotating pin 1024 drives the turning baffle 1023 to rotate with the first rotating pin 1021 as the rotation axis and the second rotating pin 1024 as the acting point. The partition plate 1022 for diverting the output end of the main conveyor belt 101 is arranged in the middle of the width direction of the main conveyor belt 101. The turning baffle 1023 includes two working positions during the movement. The first working position is that the end of the turning baffle 1023 far from the partition plate 1022 leans against the left turning baffle plate, so that the material enters the material recovery box and blocks the material from entering the second conveying unit and flowing into the next process of the device. The second working position is that the end of the turning baffle 1023 far from the partition plate 1022 leans against the right turning baffle plate, and the material enters the second conveying unit while blocking the material from entering the material recovery box.

[0113] In order to better guide the material, an arc-shaped plate 104 or an inclined plate is arranged on the side of the main conveyor belt 101 before the material passes through the baffle plate assembly 102.

[0114] As shown Figure 4 As shown, the first conveying unit 110 includes a first conveyor belt 111. Along the moving direction of the material, a first photoelectric detection component 112 and a discharging component 113 are sequentially arranged on the side of the first conveyor belt 111. When there is too much material on the first conveyor belt 111, the first photoelectric detection component 112 includes two adjacent photoelectric sensors. When the triggering time interval between the two photoelectric sensors is lower than the set value, the discharging component 113 behind the first photoelectric detection component 112 starts to work, picks out the corresponding excess material on the first conveyor belt 111 from the current queue, and pushes or blows it into the side material recovery box through a preset material dropping port on the first conveyor belt 111, so as to maintain the uniform interval of the materials in the transportation queue. Except for the discharging component 113, baffles are arranged at other positions on both sides of the first conveyor belt 111 to effectively prevent the materials from falling off the first conveyor belt 111. The discharging component 113 can adopt a compressed air nozzle to blow the materials down, or can be arranged as a cylinder, a crank-slider or even a screw-slider and other similar material pushing structures, as long as it can realize the function of pushing the materials. A baffle 114 for lying down the upright objects is arranged above the first conveyor belt 111. In this solution, the baffle 114 is supported by the baffles on both sides. The reason for setting the baffle 114 is that during normal material transportation, such as the nut soft packages described in the present invention, the materials are usually fed in a lying state with the bag mouths facing the same side; however, affected by many factors such as the impact between materials, the vibration of the belt surface of the conveyor belt, and the random replacement of the bags by the sampling personnel after temporary bag taking for inspection, the materials may be forced to be in an upright state; the setting of the baffle 114 can make the materials that are too high due to being upright be knocked back to the lying state by the baffle 114 at a specific height, so as to ensure that the material temporary storage platform at the next working station can receive the materials normally. To ensure the controllability of material transportation, the rotation speeds of the main conveyor belt 101 and the first conveyor belt 111 are adjustable.

[0115] As shown Figure 5As shown, the second conveying unit includes a material temporary storage platform, a first material buffer bin and a second material buffer bin arranged on both sides of the material temporary storage platform, a scraper assembly, and a second photoelectric detection assembly. The scraper assembly includes a scraper plate and a scraper drive. After the material is conveyed by the first conveyor belt 111, it enters the material temporary storage platform. The scraper drive drives the scraper plate to move left and right, and alternately transfers the material on the material temporary storage platform to the discharge plates located on both sides of the material temporary storage platform. The material plate drive connected to the control mechanism 9 will drive the discharge plate to open, so that the material falls into the material buffer bin. The retractable discharge plates at the upper end surfaces of the first material buffer bin and the second material buffer bin and the reciprocating motion of the aforementioned scraper plates can all be achieved through software control. Of course, in actual operation, sensing devices such as sensors can also be arranged as appropriate to achieve the above-mentioned material dropping effect. The scraper plate includes two stations, one of which is flush with the first baffle 1151 near the first material buffer bin, and the other is flush with the second baffle near the second material buffer bin. During the switching process between the first station and the second station, the scraper plate can push the materials originally located on the material temporary storage platform to the discharge plate arranged on the buffer bin, and then the materials fall into the first material buffer bin and the second material buffer bin under their own weight or external force through the opening and closing action of the discharge plate. It is worth noting that when the scraper plate reciprocates left and right, the discharge plate is always in an extended covering state or a closed state; only when the shaped materials in the two buffer bins are pushed out by the first pushing unit, and the first pushing unit and the first shaping moving plate are reset, the discharge plate is opened to discharge the materials on the discharge plate into the corresponding buffer bin. After that, the discharge plate is covered again, and the first shaping moving plate works, thereby performing shaping operations on the materials located in the corresponding buffer bin. Only after the materials in the two buffer bins have been shaped, the first pusher unit meets the pushing conditions. Of course, in actual operation, the first pusher unit can also be designed as a single-rod double-group pusher structure, that is, the materials in the two buffer bins can be independently shaped by two groups of pushers working independently, which is obviously not as efficient as the first pusher unit of the present invention, and will not be described here.

[0116] The height of the temporary material storage platform is not lower than the discharge plates on both sides, so that the scraper plate can easily scrape the material onto the discharge plates. Optimized, in order to better allow the material to fall from the discharge plates into the material buffer bin, a bracket is provided on the outer side of the material buffer bin, and an auxiliary material drop component located directly above the discharge plate is fixed on the bracket. In this solution, the auxiliary material drop component is a blowing part, which faces the material buffer bin and can accelerate the sinking of the material in the material buffer bin.

[0117] like Figure 6As shown in the figure, the first material shaping unit 130 includes a first shaping drive 131 and a first shaping moving plate 132. The first shaping moving plate 132 is the side wall of the first material buffer bin and the second material buffer bin. The side wall is located on the side in the length direction of the material. The first shaping drive 131 drives the corresponding side wall to move back and forth, so as to squeeze the material to make it slender. Optimally, the first shaping moving plate 132 is arc-shaped or has a certain angle with the horizontal direction, so as to better fit the material. The first shaping moving plates 132 in the first material buffer bin and the second material buffer bin squeeze the material to make the material as slender as possible within the allowable range, which is convenient for the material to be stuffed into the packaging bag in the later process.

[0118] As Figure 5 and Figure 7 shown in the figure, the first material pushing unit 140 is arranged at the end of the first material buffer bin and the second material buffer bin in the direction of the material. The first material pushing unit 140 pushes the material at the bottom of the material buffer bin into the receiving and turning unit 410 of the material pushing mechanism 4.

[0119] The working process of the material supply mechanism 1 is as follows:

[0120] S11. When the device is started, the control mechanism 9 controls the first steering drive 103 to work, so that the steering flap 1023 is located at the second working position. The material moves from the material steering and conveying unit 100 to the first conveying unit 110. The first photoelectric detection component 112 on the side of the first conveying unit 110 detects the feeding speed. When the distance between two adjacent materials is too close, that is, the distance between adjacent materials is too close, the two photoelectric sensors in the first photoelectric detection component 112 transmit signals to the control mechanism 9, and the unloading component 113 acts to make the excess material break away from the transportation queue of the first conveyor belt 111 and move into the material recycling box. In addition, when the distance between two adjacent materials is too close, no matter whether there is material in the material buffer bin, the two feeding plates and the material temporary storage platform, the excess material must be removed; and if there is material in the material buffer bin, the two feeding plates and the material temporary storage platform, the first conveyor belt should stop working immediately. After the material at the material temporary storage platform is "digested", that is, enters the next process, the first conveyor belt will re-feed the material to the material temporary storage platform.

[0121] S12. The control mechanism 9 obtains the signal of the first photoelectric detection component 112. That is, after detecting the incoming material on the first conveying unit 110 and detecting that there is material falling onto the material temporary storage platform through the second photoelectric detection component, the control mechanism 9 controls the scraping drive to make the scraping plate move back and forth between the first station and the second station. When the material is placed on the discharging plate of the corresponding material buffer bin, the control mechanism 9 judges whether the material in the corresponding material buffer bin is discharged. After discharging, the control mechanism 9 controls the discharging plate to be located at the first station, so that the material enters the corresponding material buffer bin, and then switches to the second station.

[0122] S13. After the material enters the corresponding material buffer bin, the first material shaping unit 130 shapes the material. The control mechanism 9 judges whether the material is needed in the material pushing and conveying mechanism 4. When the material is needed, the control mechanism 9 controls the first material pushing unit 140 to push the material into the material pushing and conveying mechanism 4.

[0123] 2. Packaging bag supply mechanism

[0124] Such as Figure 8 And Figure 9As shown in the figure, the packaging bag supply mechanism 2 includes a bag bin 210 and a first bag suction unit 220. The bag bin 210 includes a bin panel 2101 at the bottom of the bag bin 210 and an arc-shaped frame 2102 that supports multiple packaging bags, that is, a plurality of packaging bags can be placed simultaneously. In this solution, the bag bin 210 and the first bag suction unit 220 are arranged opposite to each other vertically. One side of the arc-shaped frame 2102 is different in height from the opposite side, which is caused by the inherent structural differences of the packaging bags: to ensure the volume, the bottom of the packaging bag is usually a foldable structure, so that the bag cavity can be automatically expanded after the material enters; the foldable structure of the bag bottom will make the thickness of the bag bottom significantly thicker than the thickness of the bag mouth when the bag body is in the unopened state, that is, there is a thickness difference between the bag bottom and the bag mouth. When multiple unopened bag bodies are stacked in the same direction, the above thickness difference will be more obvious. When the arc-shaped frame 2102 of the present invention is adopted, it is obviously more conducive to achieving the purpose of reliably accommodating the packaging bags with the above-mentioned thickness difference. More specifically, the arc-shaped frame 2102 has a box-shaped structure with an upward opening, and the height of the outer end box wall of the arc-shaped frame 2102 for contacting the bottom of the packaging bag is higher than the height of the inner end box wall for contacting the head of the packaging bag; in the horizontal projection in the direction perpendicular to the length of the packaging bag belt, the circular arc line formed by the projection of the outer end box wall and the circular arc line formed by the projection of the inner end box wall form concentric circles. The packaging bag is made of soft material and is placed horizontally in the bag bin 210. An out-bag hole is provided on the bin panel 2101, and the packaging bag can pass through under the adsorption force. When the packaging bag leaning against the inner side of the bin panel 2101 is sucked out from the out-bag hole, the adjacent packaging bags are closely attached to the bin panel 2101 under the gravity of the packaging bag behind. Optimally, the out-bag hole is located at the bottom of the box of the bag bin, so that the bottom of the box of the bag bin forms a bin panel for out-bag; a bag blocking piece 2103 is arranged along the circumference of the out-bag hole of the out-bag hole, and each bag blocking piece 2103 is hinged and fixed to the bin panel 2101 through a hinge shaft perpendicular to the surface of the bin panel. The bag blocking piece 2103 is used to adjust the size of the out-bag hole and hang the packaging bag at the out-bag hole to prevent it from falling automatically.

[0125] The first bag suction unit 220 includes a first suction cup 2201 and a first bag suction drive 2202. Both the first suction cup 2201 and the bag bin 210 are multiple and have the same number. The multiple first suction cups 2201 are connected to the first bag suction drive 2202 through a suction cup connecting piece 2203. In this solution, there are 2 first suction cups 2201.

[0126] A negative pressure tube is arranged on the first suction cup 2201, and the negative pressure tube is connected to the corresponding negative pressure supply part. The controlled end of whether the negative pressure supply part is turned on is connected to the control mechanism.

[0127] Optimally, in order to detect whether the bag is taken successfully, the packaging bag supply mechanism 2 further includes a third photoelectric detection component 230, and the third photoelectric detection component 230 and the first bag suction drive 2202 are respectively connected to the corresponding ports of the control mechanism.

[0128] The bag bin 210 is arranged on the side of the side support plate 302 of the bag transport mechanism 3 through the support portion. In this embodiment, the first bag suction unit 220 is respectively arranged on the side support plates 302 on both sides of the bag transport mechanism 3, and the first suction cup 2201 passes through the corresponding side support plate 302, thereby sucking the first and last ends of the unified packaging bag.

[0129] 3. Bag transport mechanism

[0130] like Figure 10 As shown, the bag transport mechanism 3 includes a second conveyor belt 300, a second conveyor drive 301, a side support plate 302 and a plurality of partition plates 303. The plurality of partition plates 303 are arranged in sequence and at intervals perpendicular to the second conveyor belt 300 and form an array of partitions with the second conveyor belt 300. The side support plates 302 are located on both sides of the second conveyor belt 300 and are parallel to the second conveyor belt 300. The width of the partition plates 303 is smaller than the width of the second conveyor belt 300 and is arranged away from the side of the subsequent processing mechanism. The side support plates 302 on the side of the conveyor belt close to the subsequent processing mechanism press the second conveyor belt 300, so that the damaged materials will not fall under the second conveyor belt 300. Optimally, there is a gap between the side support plates 302 at the lower side of the belt surface and the bag bottom baffle 304 for debris to fall. The first suction cup 2201, under the action of the first bag suction drive 2202, sucks the packaging bag in the bag bin 210 into the partition room of the bag transport mechanism 3. The side support plate 302 serves as a support for both ends of the packaging bag during the transportation of the packaging bag, and plays a role in positioning the packaging bag in the up and down directions, so that the center of the packaging bag after filling can be consistent with the center required by the shaping mechanism 6, the sealing mechanism 7, the bag opening mechanism 5 and other workstations. The second conveying drive 301 drives the second conveyor belt 300 to rotate and transport the packaging bag to the next workstation. The bag bottom baffle 304 is vertically arranged on the side of the partition plate 303, and is used to block the bottom of the packaging bag. In order to facilitate the viewing of other structures in the figure, most of the bag bottom baffle 304 is hidden. As shown in the figure, Figure 19 As shown, a bag holding drive for driving the bag holding plate 305 to move up and down is provided below the side support plate 302, and the bag holding plate 305 is located at the bag bottom 3111. When the bag opening and filling mechanism 5 clamps the bag head 3110 of the packaging bag to a certain height, the bag holding drive drives the bag holding plate 305 to lift upward, so that the packaging bag is always parallel to the second conveyor belt 300. In the non-driven state, the bag holding plate 305 is flush with the surface of the side support plate 302.

[0131] In this way, during the bag opening process, the central axis of the packaging bag is always parallel to the second conveyor belt 300. Since the folded packaging bag is nearly perpendicular to the side support plate 302 at the bottom during the opening process, the packaging bag is in an inclined state on the second conveyor belt 300. With the closed-loop material transportation of the second conveyor belt 300, the partition space of the bag transporting mechanism 3 continuously circulates among the packaging bag supply mechanism 2, the material transferring and pushing mechanism 4, the bag opening and filling mechanism 5, the shaping mechanism 6, the sealing mechanism 7, and the finished product output mechanism 8, thereby achieving the feeding effect.

[0132] Due to the inclined state of the second conveyor belt 300, firstly, it is convenient for the transfer, pushing, and filling of flexible packaging materials. Secondly, in the inclined state, the packaging bag relies on its own gravity to make the bag bottom 3111 and the longitudinal bottom surface fully contact the bag supporting plate 305 and the side support plate 302, so that it can be accurately positioned and transported within the partition space. This structure is simpler in mechanical structure, higher in efficiency, and better in automatic alignment effect than other ways of transporting packaging bags. The lateral distance of the partition space is slightly larger than the lateral width dimension of the bag, so that the bag can be automatically aligned under the action of gravity within the inclined partition space. However, there are also certain problems with the above structure, that is, under the bag opening action of the bag opening and filling mechanism 5, the bag mouth of the packaging bag will be forced to tilt upwards, and then the material will enter the packaging bag under the pushing action of the material transferring and pushing mechanism 4; however, in actual operation, people find that when the bag body of the packaging bag is not in the same plane as the pushing path of the material transferring and pushing mechanism 4, the bottom part of the packaging bag will bend, making the material unable to directly reach the bottom, thus affecting the feeding state. The present invention solves the above problems by providing a reserved hole on the side support plate 302 at the position of the bag opening and filling mechanism 5 through which the bag supporting plate 305 can extend, and relying on the bag supporting plate 305 to solve the above problems. Whenever the bag opening and filling mechanism 5 opens the bag mouth of the packaging bag, the bag supporting plate 305 synchronously rises through the reserved hole as shown in Figure 10 so as to push the bag bottom of the packaging bag to lift synchronously with the bag mouth; in this way, it can be ensured that the pushing path of the material transferring and pushing mechanism 4 is basically flush with the bag length direction of the packaging bag each time, which also ensures that the material can be pushed to the bottom in one go, and the operation is extremely flexible and efficient.

[0133] In addition, due to the processing technology of the bag body, the bottom edge of the bag body is usually in the form of a hard folded corner after hot pressing. The above-mentioned hard folded corner-shaped bottom edge of the bag body does not affect the cooperation state between the bag body and the second conveyor belt 300 when the bag body is in the unopened state. However, when the material is pushed into the packaging bag and shaped, the bottom of the packaging bag is pressed and expanded. At this time, the hard folded corner-shaped bottom edge of the bag body warps downward and presses against the side support plate 302, resulting in the bag body being unable to present the required fitting transportation state. Therefore, in the present invention, a reserved gap is preset between the bottom baffle 304 and the side support plate 302. Once the bottom edge of the packaging bag filled with materials warps downward, it will naturally fall into the reserved gap, so as to ensure that the bottom side of the packaging bag filled with materials can always correctly adhere to the second conveyor belt 300, and at the same time, it also functions to drop sundries, thereby ensuring the working reliability and efficiency of the overall bag transportation process.

[0134] The working process of the cooperation between the packaging bag supply mechanism 2 and the bag transportation mechanism 3 is as follows:

[0135] S21. Place the packaging bag into the bag bin 210. Due to the action of gravity, the lowermost packaging bag in the arc-shaped frame 2102 presses against the bin panel 2101.

[0136] S22. The control mechanism 9 controls the first bag suction drive 2202 to work. The first suction cup 2201 sucks the innermost packaging bag out of the hole in the bin panel 2101 into the corresponding partition room through negative pressure. The third photoelectric detection component 230 detects whether the bag is taken successfully. When the bag is taken successfully, go to step S23. If the bag is not taken successfully, when the control mechanism 9 controls the corresponding partition room to run through all subsequent workstations, the corresponding workstations do not work.

[0137] S23. When the first suction cup 2201 moves in the direction away from the bag bin 210, that is, when it contracts downward, when it reaches the set position, the negative pressure supply part stops supplying negative pressure. Under the action of gravity, the packaging bag falls from the first suction cup 2201 into the partition room.

[0138] S24. The control mechanism 9 obtains the signal of the positioning photoelectric detection position and controls the bag transportation mechanism 3 to work to make the packaging bag enter the next process.

[0139] 4. Material transfer and pushing mechanism

[0140] As shown in FIG. 11- Figure 13 The material transfer and pushing mechanism 4 includes a material receiving and turning unit 410 and a second material pushing unit 420.

[0141] The material receiving and turning unit 410 includes a first guide groove 4101, a second turning drive 4102 for driving the first guide groove 4101 to turn, a second guide groove 4103 and a transition channel. The first guide groove 4101 has two working positions under the action of the second turning drive 4102. The first working position is to dock with the outlet of the material buffer bin, so as to receive the material pushed out by the corresponding material buffer bin through the first pusher unit 140. The second working position is that the first guide groove 4101 and the second guide groove 4103 form an annular cavity. In this embodiment, the annular cavity is cylindrical. The rotating shaft of the first guide groove 4101 is close to the transition channel, and the input end of the transition channel is close to the output end of the cavity. The transition channel is the total output of the material transfer and pushing mechanism 4, which is convenient for connecting with the next process.

[0142] The first guide groove 4101 obtains the material at the front end and moves from the first working position to the second working position, so that the material may automatically fall out under the action of gravity. On the one hand, the second guide groove 4103 can prevent the material from flying out during the rotation of the first guide groove 4101. On the other hand, the second guide groove 4103 can cooperate with the first guide groove 4101 to form an annular cavity, so that the material becomes an external shape state adapted to this cavity, and this annular cavity can also provide a guiding channel for pushing the material.

[0143] The second pusher unit 420 includes a push rod 4201, a contact component 4202 fixed at the end of the push rod 4201 and a push rod drive. The push rod 4201 moves back and forth in the length direction of the second guide groove 4103. Optimally, in order to reduce the damage of the material caused by a large impact and effectively improve the working efficiency of the material transfer and pushing, under the action of the push rod drive, the speed of the push rod 4201 from the start of extension to the return process is successively divided into the initial average speed, the middle average speed, the end static holding average speed, and the return average speed, and the return average speed ≥ the initial average speed ≥ the middle average speed > the end static holding average speed, so that the material will not be deformed or damaged due to excessive speed when it just contacts the second pusher unit 420. Especially for soft-packaged materials, the initial average speed is the high-speed operation before the material contacts the second pusher unit 420, the middle average speed is the anti-breakage working mode after the material contacts the second pusher unit 420, the end static holding average speed can ensure that the material is fully compacted in the packaging bag, and the return average speed is for the second pusher unit 420 to return at high speed after the pushing is completed to improve the working efficiency.

[0144] In order to determine where to start different speeds, three induction switches are sequentially arranged on the main support frame 10 on the side of the push rod 4201 along the length direction of the push rod 4201. When the push rod 4201 makes a specified linear motion, the induction switches will be triggered in sequence, so that the push rod 4201 is controlled to jump from the previous average speed to the next average speed. During the return process of the push rod 4201, until it touches the first induction switch in the return process, the return average speed is maintained until it reaches the initial state. Optimally, the driving device of the second pushing unit 420 is provided with a pushing resistance threshold. When the pushing resistance of the driving device is greater than the threshold, it indicates that the material is stuck in the cavity. After the control mechanism 9 obtains the signal corresponding to the driving device resistance being greater than the threshold (for example, the power is greater than the threshold), the control mechanism 9 activates the alarm device and stops all mechanisms from working to protect the stuck material, avoid excessive squeezing and damage of the material, and avoid damage to the mechanical structure.

[0145] The contact assembly 4202 in the second pushing unit 420 includes a pushing piece 42021 and a protrusion 42022, and the bottom of the pushing piece 42021 is fixed to the push rod 4201 through a connecting plate. In the above scheme, the pushing piece 42021 as a whole presents a wide-mouthed groove shape with a gradually increasing size from the groove bottom to the groove mouth, which facilitates the fixing of the pushing piece 42021 and the protrusion 42022; at the same time, the protrusion 42022 is fixed to the bottom of the inner concave arc surface of the pushing piece 42021 by threaded fitting, bonding or even welding. In the preferred scheme, the protrusion 42022 should be fixed to the push rod 4201 by threaded fitting, so that the protrusion 42022 can be replaced in time when it is worn. When the material is a soft bag, the wide-mouthed groove-shaped pusher sheet 42021 can rely on its arc-shaped contact surface to cling to the surface of the material. Compared with the flat contact, the arc-shaped contact surface can play a certain gathering function, thereby preventing the shaped material from deforming again. At the same time, on the one hand, the protrusion 42022 can prevent the material from forming a vacuum area between the contact surface of the material and the pusher sheet 42021 when the push rod 4201 retreats under the above-mentioned gathering effect, causing the material to be adsorbed on the pusher sheet 42021; on the other hand, when the material is a soft packaging bag, the protrusion 42022 pushes the top of the gas-containing soft packaging, which can cause the top of the material to be folded back into the packaging bag. Compared with the flat-pressed packaging bag, the upper end surface of the packaging bag is less likely to rebound when this method is used, and the volume of the entire material in the packaging bag is smaller, which is more conducive to the subsequent sealing operation of the packaging bag. The entire contact component 4202 is connected to the push rod 4201 through a connecting plate, so that the contact component 4202 can be replaced according to different materials to ensure its flexibility of use and wider application.

[0146] When the detection component in the bag opening and filling mechanism detects that the packaging bag is not opened, the material can continue to enter the next process, and the material can also be stopped from continuing to fall by the material blocking portion 421 arranged on the side of the second guide groove.

[0147] In this embodiment, the material conveying and pushing mechanism 4 includes two groups, which are respectively used to convey and push the materials in the first material buffer bin 121 and the second material buffer bin 122.

[0148] The process of the material conveying and pushing mechanism 4 is as follows:

[0149] S41. The control mechanism 9 controls the first guide groove 4101 to be in the first working position. The material is discharged from the material buffer bin, and then the second steering drive 4102 is controlled to rotate to the second working position.

[0150] S42. The push rod 4201 of the second material pushing unit 420 moves towards the material, pushes the material out of the cavity formed by the first guide groove 4101 and the second guide groove 4103, and falls into the packaging bag opened by the bag opening and filling mechanism 5.

[0151] 5. Bag opening and filling mechanism

[0152] As Figures 14 - 18 shown, the bag opening mechanism includes a second suction cup unit 500 and a bag opening and discharging unit.

[0153] The second suction cup unit 500 includes a second suction cup group 501 and a second suction cup drive 502. The second suction cup group 501 includes two suction cups, which are respectively located at the openings on both sides of the packaging bag. The second suction cup drive 502 drives the two suction cups of the second suction cup group 501 to adsorb both sides of the packaging bag simultaneously, and then move in opposite directions, thereby opening the packaging bag.

[0154] The bag opening and discharging unit 510 includes a first bivalve body 511 and a second bivalve body 512 that can be closed, a bag opening and discharging support plate, and a rotation drive 513. When the first bivalve body 511 and the second bivalve body 512 are in the initial state, it is the closed working position, and the first bivalve body 511 and the second bivalve body 512 are respectively placed on both sides of the bag mouth of the packaging bag; when the first bivalve body 511 and the second bivalve body 512 are in the working state, it is the open working position, and the first bivalve body 511 and the second bivalve body 512 generate a hinged action towards each other until the tips of the first bivalve body 511 and the second bivalve body 512 are both inserted into the bag mouth of the preliminarily opened packaging bag. At this time, the gap formed between the first bivalve body 511 and the second bivalve body 512 constitutes a blanking gap for material dropping.

[0155] As Figure 18As shown, the first bivalve body 511 and the second bivalve body 512 both include a tongue with an arc-shaped plate-like outer shape. When the first bivalve body 511 and the second bivalve body 512 are in the working state, the arc surfaces of the tongues of the two groups of bivalve bodies face each other to enclose the blanking gap; an installation plate is arranged at the arc back of the tongue parallel to the axis of the tongue. The installation plate is provided with a hinge hole and a force hole with parallel axes, and the force hole is arranged between the hinge hole and the tongue. It is hinged on the bag-opening and blanking support plate through the hinge hole. The rotation drive 513 is connected to the force hole through a pull rod, so as to drive the first bivalve body 511 and the second bivalve body 512 to rotate around the hinge hole, so that the two are replaced between the starting position and the closing position.

[0156] The rotation drive 513 includes a bivalve body power component and a power rod 514. The power rod 514 is hinged to the force hole, and two power rods 514 hinged to the first bivalve body 511 and the second bivalve body 512 are connected to each bivalve body power component.

[0157] The second suction cup unit 500 includes a front connecting rod and a rear connecting rod located on both sides of the packaging bag and used to fix the suction cups. A bag-opening guide rail 5025 is arranged on the bag-opening support plate. The guiding direction of the bag-opening guide rail 5025 is perpendicular to the bag surface of the packaging bag. The front connecting rod 5026 and the rear connecting rod 5027 move back and forth on the corresponding bag-opening guide rail 5025 under the action of the second suction cup drive 502. The second suction cup drive 502 includes a rotating disk 5021, a suction cup rotation power component 5022 that drives the rotating disk 5021 to rotate, a first rotating shaft 5023 and a second rotating shaft 5024 fixed on the periphery of the rotation. The connection line of the first rotating shaft 5023 and the second rotating shaft 5024 passes through the center of the rotating disk 5021. The first rotating shaft 5023 and the second rotating shaft 5024 are respectively connected through a rotating shaft connecting rod, and the rotating shaft connecting rod is connected to the corresponding front connecting rod 5026 and rear connecting rod 5027.

[0158] When the first bivalve body 511 and the second bivalve body 512 are in the starting position, the outer sides of the bottoms of the first bivalve body 511 and the second bivalve body 512 are located inside the packaging bag. In order to prevent the second suction cup unit 500 from being damaged when the second suction cup unit 500 abuts against the corresponding bivalve body against the packaging bag, a first elastic member 504 is fixed on the connecting rod at the bag opening support plate, and the first elastic member 504 is closer to the corresponding bivalve body than the suction cup of the second suction cup unit 500. The function of the first elastic member 504 is that after the bivalve body presses the packaging bag, it can cooperate with the bivalve body to jointly clamp the front or rear bag opening of the packaging bag in opposite directions, so as to prevent the packaging bag from slipping during material filling and protect the packaging bag. When the bivalve body is in the starting position, the outer wall of the bivalve body presses the packaging bag against the first elastic member 504. The second suction cup unit 500 is located above the first elastic member 504 on the same side. Optimally, in order to detect whether the packaging bag is opened, the first bivalve body 511 and the second bivalve body 512 are provided with detection holes 5110 on the contact surface with the packaging bag, and a negative pressure detection component is arranged on the air pipe line in the second suction cup unit 500. As long as one side of the negative pressure detection components corresponding to the suction cup units on the left and right sides of the packaging bag fails to reach the set value, it means that the packaging bag is not opened. The signal that the packaging bag corresponding to this partition is not opened is sent to the subsequent control mechanism 9, then the material pushing mechanism 4, the shaping mechanism 6, and the sealing mechanism 7 do not act at the corresponding partition, and the packaging bag and the material in this partition are recycled to the material recycling area.

[0159] The working steps of the bag opening and filling mechanism 5 are as follows:

[0160] S51. When the second suction cup unit 500 moves closer to the middle, the bag opening of the packaging bag moves upward, and at the same time, the bag supporting unit supports the bag tail and moves upward synchronously, and it is ensured that the packaging bag is always flush with the second conveyor belt 300; after the two opposite suction cups in the second suction cup unit 500 are completely attached to the corresponding surface of the packaging bag, the two suction cups in the second suction cup unit 500 move in opposite directions to suck open the packaging bag; when the two suction cups reach the set distance, the control mechanism 9 controls the bivalve body in the bag opening and discharging unit to move from the closed position to the starting position;

[0161] S52. The two suction cups continue to move in the reverse direction until they reach the position, and then each bivalve body starts to move to the starting position; after the bivalve body is in the starting position, on the one hand, the bivalve body presses the bag opening of the packaging bag against the first elastic member 504, so as to fix the bag opening of the packaging bag; on the other hand, the detection hole 5110 of the bivalve body is just located at the opposite side of the corresponding suction cup, that is, the detection hole 5110 and the suction surface of the suction cup are just separated by the bag surface of the packaging bag;

[0162] S53. The control mechanism 9 obtains the negative pressure value of the suction cup through the negative pressure detection components on both sides. As long as the negative pressure value on one side fails to reach the set value, it indicates that the bag mouth on one side of the packaging bag is not opened. When the control mechanism 9 controls the movement of the partition room to the shaping mechanism 6 and the sealing mechanism 7, the shaping mechanism 6 and the sealing mechanism do not work, or the push rod 4201 can also be controlled not to work. If the negative pressure values on both sides reach the set value, then proceed to step S54.

[0163] S54. The control mechanism 9 controls the push rod 4201 in the material transfer and pushing mechanism 4 to work, so that the material enters the packaging bag through the blanking gap formed by the two groups of conchoidal bodies; then the push rod 4201 returns, leaving the material in the bag cavity of the packaging bag, completing the bagging process.

[0164] When the push rod 4201 returns, in fact, the two groups of conchoidal bodies have begun to gradually reset, that is, from the working position to the closed position; at this time, the clamping state between the corresponding conchoidal body and the first elastic member 504 disappears, and the packaging bag returns to the unconstrained state. Therefore, under the action of the frictional force of the push rod 4201, the packaging bag filled with materials will actually be driven to move upward. At this time, it is necessary to rely on the subsequent first flapping unit 600 to perform the functions of exhausting, preliminary shaping, and pressing out the bag to prevent the filled bag from being lifted by the push rod 4201.

[0165] 6. Shaping mechanism

[0166] As Figure 14 、 Figures 20 - 29 shown, the shaping mechanism 6 includes a first flapping unit 600, a second flapping unit 610, and a first bag mouth shaping unit 620.

[0167] As Figure 14 、 Figure 20 and Figure 21 shown, the first flapping unit 600 is arranged at the bag opening and feeding unit in the bag opening mechanism. The first flapping unit 600 is provided with a flapping cylinder 601 and a flap 602 fixed to the driving end of the cylinder. The flap 602 flaps the bulging packaging bag filled with materials. On the one hand, it plays a shaping function to ensure the aesthetic appearance of the finished packaging bag filled with materials; on the other hand, the packaging bag filled with materials is pressed back onto the conveyor belt surface to ensure the position positioning effect of the packaging bag relative to the partition room.

[0168] The second flapping unit 610 has the same structure as the first flapping unit 600 and is arranged at the front end of the first bag mouth shaping unit 620.

[0169] Both the first flapping unit 600 and the second flapping unit 610 can be provided, or either one can be selected.

[0170] The first bag mouth shaping unit 620 includes a transverse shaping component 6210, a longitudinal shaping component 6220, a shaping mounting plate for fixing the transverse shaping component 6210 and the longitudinal shaping component 6220, a shaping distance drive 6230 for driving the shaping mounting plate to adjust the distance from the bag mouth, and a crease component 6240.

[0171] As Figures 24 - 26 shown, the transverse shaping component 6210 includes a transverse shaping support plate 6211, transverse shaping parts 6212 symmetrically arranged left and right on the transverse shaping support plate 6211, and a transverse shaping drive 62125. The right side of the transverse shaping part 6212 includes a first rotating rod 62121, a second rotating rod 62122, a fixed seat 62123 of the transverse shaping plate 62124, and the transverse shaping plate 62124. The first rotating rod 62121 includes three rotating shafts along the length direction. The upper rotating shaft is connected to the transverse shaping drive 62125, and the middle upper rotating shaft is rotatably connected to the transverse shaping support plate 6211. In the above solution, the fixed seat 62123 is a "7"-shaped connecting piece, and the first rotating rod 62121 is hinged at the corner of the "7"-shaped connecting piece. The second rotating rod 62122 includes 2 rotating shafts. The upper end rotating shaft is rotatably connected to the transverse shaping support plate 6211, and the lower end rotating shaft is hinged to the transverse end of the "7"-shaped connecting piece. The transverse shaping plate 62124 is fixed on the vertical end of the "7"-shaped connecting piece. Specifically, under the action of the transverse shaping drive 62125, the mirror-symmetric transverse shaping parts 6212 form a planar four-bar linkage mechanism composed of the first rotating rod 62121, the second rotating rod 62122, the transverse shaping support plate 6211, and the horizontal part of the fixed seat 62123. When the two symmetric transverse shaping plates 62124 are always vertically downward, they move back and forth in the approaching and separating directions. Since the transverse shaping drive 62125 is a floating structure, that is, it is only hinged to the two groups of first rotating rods 62121 at both ends and has no other fixed structure; therefore, when the two transverse shaping plates 62124 move towards each other, according to the resistance sizes feedback from both sides of the packaging bag to the transverse shaping plates 62124, the transverse shaping drive 62125 will have an adaptive left and right offset, so as to automatically correct errors such as the size error of the packaging bag, the shape error of the packaging bag after filling, and the position error between the partitions, ensuring the best shaping effect. A plurality of mounting holes are arranged along the length direction on the vertical part of the fixed seat 62123, and waist-shaped holes are correspondingly arranged on the transverse shaping plate 62124, which can be adjusted or replaced according to the shaping size requirements. The height of the transverse shaping plate 62124 on the "7"-shaped connecting piece is adjustable, so as to be applicable to different packaging bags. Since two groups of transverse shaping components are arranged on the transverse shaping support plate 6211, the function of simultaneously shaping two packaging bags can be realized, significantly improving the actual shaping efficiency.

[0172] As shown Figures 26 - 27 in the figure, the longitudinal shaping component 6220 includes a vertical support plate 6221, a rectangular moving part, a plate moving part, and a longitudinal shaping drive 6224. The rectangular moving part includes a rectangular frame, which includes a first support plate 62221 and a second guide rod 62222 perpendicular to each other, a third support plate 62223 parallel to the first support plate 62221 and perpendicular to the second guide rod 62222, and a fourth guide rod 62224 parallel to the second guide rod 62222 and perpendicular to the third support plate 62223. A first longitudinal shaping plate 6225 is fixed on the first support plate 62221. The plate moving part includes a moving plate 6223 that moves back and forth on the second guide rod 62222. A second longitudinal shaping plate 6226 that can move towards and away from the first longitudinal shaping plate 6225 is arranged on the moving plate 6223. The longitudinal shaping drive 6224 is arranged on the vertical support plate 6221 and is respectively connected to the third support plate 62223 and the moving plate 6223. The longitudinal shaping drive 6224 drives the third support plate 62223 and the moving plate 6223 to move towards and away from each other, so as to realize the opening and closing functions of the first longitudinal shaping plate 6225 and the second longitudinal shaping plate 6226 in the packaging bag. In this solution, the longitudinal shaping drive 6224 is an annular steering drive, and the annular steering drive rotates back and forth to realize the synchronous movement towards and away from each other of the third support plate 62223 and the moving plate 6223. The principle of the annular steering drive is the same as that of the second suction cup drive 502. Specifically: The annular steering drive includes a circular turntable, an annular power component that drives the circular turntable to rotate, a third rotating shaft and a fourth rotating shaft fixed on the periphery of the circular turntable. The connection line of the third rotating shaft and the fourth rotating shaft passes through the center of the circular turntable. The third rotating shaft and the fourth rotating shaft are respectively connected by connecting rods, and the connecting rods are connected to the corresponding third support plate 62223 and the moving plate 6223. In order to shape two packaging bags at the same time, corresponding first longitudinal shaping plates 6225 and second longitudinal shaping plates 6226 are respectively arranged on both sides of the first support plate 62221 and the moving plate 6223. Both ends of the moving plate 6223 are sleeved on the second guide rod 62222 and a fourth guide rod 62224 parallel to the second guide rod 62222. In other words: Figure 28 taking... as an example, during actual operation, the longitudinal shaping drive 6224 makes a turning motion, and can apply thrust to the third support plate 62223 and the moving plate 6223 through each transmission shaft; when the third support plate 62223 receives the thrust, it generates Figure 28The upward movement in [description] drives the first support plate 62221 to move upward through the second guide rod 62222 and the fourth guide rod 62224; at the same time, due to the action of the transmission shaft, the moving plate 6223 slides downward along the second guide rod 62222 and the fourth guide rod 62224. In this way, the moving plate 6223 fixed with the second longitudinal shaping plate 6226 moves downward, while the first support plate 62221 fixed with the first longitudinal shaping plate 6225 moves upward, enabling the corresponding second longitudinal shaping plate 6226 and the first longitudinal shaping plate 6225 to perform synchronous approaching and separating actions. When the first longitudinal shaping plate 6225 and the second longitudinal shaping plate 6226 are inserted into the inner sides of the bag openings on the front and back sides of the packaging bag, their separating action can expand the bag opening, facilitating the transverse shaping plate 62124 to move toward each other from the left and right sides of the packaging bag, i.e., the narrow sides, to smooth the sides of the packaging bag; while their approaching action releases the bag opening and resets it to ensure that the current packaging bag can move normally to the subsequent process.

[0173] When taking the first longitudinal shaping plate 6225 and the second longitudinal shaping plate 6226 as a set of shaping plate groups, two sets of shaping plate groups are arranged on the rectangular frame in this solution, enabling a set of devices to shape two packaging bags simultaneously. The shaping blowing pipe 630 is installed on the longitudinal shaping plate. Before the longitudinal shaping plate is inserted into the packaging bag, air is blown into the packaging bag to fully expand it, and the longitudinal shaping plate equipped with the shaping blowing pipe 630 can be replaced according to the different sizes of the packaging bags.

[0174] The movement directions of the shaping distance drive 6230, the transverse shaping drive 62125, and the longitudinal shaping drive 6224 are perpendicular to each other in pairs, forming a three-dimensional movement.

[0175] Such as Figure 22 And Figure 29As shown, the crease assembly 6240 includes a crease driver 6241 and crease blocks 6242 respectively located on the front and back sides of the packaging bag, that is, on the two long sides. Second elastic members are provided on the adjacent surfaces of the two groups of crease blocks 6242, thereby improving the crease effect. After the aforementioned horizontal shaping assembly 6210 and vertical shaping assembly 6220 move into place, the two groups of crease blocks 6242 act in opposite directions under the action of the crease driver 6241, so as to obliquely clamp the front and back sides of the upper part of the middle of the packaging bag. Then, the horizontal shaping assembly 6210 and the vertical shaping assembly 6220 perform a pulling-away action, and the bag mouth of the packaging bag is shaped, and at the same time, the curved and smooth bag shoulders are exposed. The crease block 6242 includes a crease connecting block, a crease straight plate fixed on the crease connecting block, and a crease inclined plate fixed at the lower end of the crease straight plate. When the crease straight plate acts on the packaging bag to generate a crease, the crease inclined plate is obliquely attached to the bag surface of the packaging bag, increasing the contact surface with the packaging bag, thereby optimizing the crease effect. Of course, the position of the crease assembly can be adjusted adaptively according to the requirements of the packaging bag, that is, the crease height can be adjusted to meet the processing requirements of different packaging bags.

[0176] The working process of the shaping mechanism 6 is as follows:

[0177] S61. The control mechanism 9 controls the first flapping unit 600 to work, and performs the first shaping on the packaging bag just filled with the material;

[0178] S62. The control mechanism 9 controls the second flapping unit 610 to work, and performs the second shaping on the packaging bag just filled with the material;

[0179] S63. The control mechanism 9 controls the shaping distance driver 6230 to make the shaping plates in the horizontal shaping assembly 6210 and the vertical shaping assembly 6220 located at the corresponding positions of the packaging bag to be shaped; specifically, the horizontal shaping plate 62124 is located on the left and right sides of the bag mouth, and both the first vertical shaping plate 6225 and the second vertical shaping plate 6226 extend into the packaging bag to be shaped. While the shaping distance driver 6230 is working, the shaping air blowing pipe 630 on the vertical shaping plate blows air into the packaging bag, so that the packaging bag fully expands. At this time, the horizontal shaping plate 62124 is in the maximum opening state, and the opening distance of the vertical shaping plate is smaller than the opening size of the packaging bag;

[0180] S64. The control mechanism 9 controls the transverse shaping drive 62125 in the transverse shaping component 6210 to operate, causing the two groups of transverse shaping plates 62124 to move towards each other and synchronously squeeze the left and right sides of the packaging bag inward; during this process, the control mechanism 9 delays the control of the longitudinal shaping drive 6224 in the longitudinal shaping component 6220 to operate, causing the first longitudinal shaping plate 6225 and the second longitudinal shaping plate 6226 to move towards each other; that is: when the two groups of transverse shaping plates 62124 move towards each other, the first longitudinal shaping plate 6225 and the second longitudinal shaping plate 6226 then move towards each other. From the top-down view of the bag opening, the above components cooperate to change the cross-section of the packaging bag opening from the original wide-mouth square cross-section to a flat double "M" shape cross-section.

[0181] S65. The control mechanism 9 controls the crease component 6240 to operate. The crease component 6240 presses the packaging bag. While the crease component 6240 presses the bag opening, the shaping distance drive 6230 pulls out the longitudinal shaping plate and the transverse shaping plates 62124 from inside the packaging bag.

[0182] 7. Sealing mechanism

[0183] As Figures 30 - 32 shown, the sealing mechanism 7 includes the bag-pressing and sealing components 710 located on both sides of the packaging bag, the sealing drive 720, and the sealing fixed plate 730 that supports the sealing drive 720. The bag-pressing and sealing components 710 include the heat-insulating block 711 fixed on the driving end of the sealing drive 720, the sealing unit 712 and the bag-pressing unit 713 fixedly arranged up and down on the heat-insulating block 711. The sealing unit 712 includes the sealing block 7121, the heating element 7122 arranged inside the sealing block 7121, and the high-temperature resistant rubber plate 7123 fixed on the sealing surface of the sealing block 7121. In addition, referring to Figure 33 shown, the sealing mechanism further includes the high-temperature anti-sticking adhesive tape 7124. The high-temperature anti-sticking adhesive tape 7124 covers the outside of the high-temperature resistant rubber plate 7123, which on the one hand plays the role of fixing the high-temperature resistant rubber plate 7123, and on the other hand can also prevent the packaging bag from directly contacting the sealing block during the heat-sealing process, resulting in the bonding and scalding of the packaging bag. It should be noted that along the entire length direction of the sealing block 7121, the high-temperature resistant rubber plate 7123 is higher than the sealing plane of the sealing block 7121. Because the high-temperature resistant rubber plate 7123 itself has compressibility, under the action of the sealing pressure, it can automatically fit according to the thickness of different areas of the bag. At the same time, in order to control the temperature of the sealing block 7121, a temperature measuring element 7125 is also provided on the sealing block 7121 to adjust the working power of the heating element 7122.

[0184] The bag pressing unit 713 includes a bag pressing transition plate group 7131, a bag pressing straight plate 7132, and a bag pressing inclined plate 7133. One end of the bag pressing transition plate group 7131 is fixed on the heat insulation block 711, and the other end is connected to the pressing plate straight plate. The pressing plate inclined plate is arranged below the bag pressing straight plate 7132 and closely adheres to the outer side wall of the packaging bag after bag pressing. The length of the bag pressing transition plate group 7131 is adjustable, that is, the distance between the bag pressing straight plate 7132 and the inclined plate to the heat insulation block 711 is adjustable, so that the bag pressing straight plate 7132 and the bag pressing inclined plate 7133 are applicable to different packaging bags containing materials. The bag pressing unit 713 is used to achieve exhaust before sealing and ensure smooth sealing, ensuring that the front and back of the bag mouth are not misaligned. The bag pressing unit is replaceable to adapt to packaging bags with different amounts of internal materials.

[0185] To adapt to different packaging bags and different sealing heights, the sealing mechanism 7 further includes a sealing position adjustment component for adjusting the position of the sealing fixed plate 730. The sealing position adjustment component includes a position adjustment plate 742. The position adjustment plate 742 is slidably fitted at the sliding bearing 741 on the total support frame 10 through a position adjustment guide shaft 744, and the top of the position adjustment guide shaft 744 is fixed on the sealing fixed plate 730. At the same time, an adjustment screw rod 745 is rotatably fitted on the position adjustment plate 742, and one end of the adjustment screw rod 745 located outside the position adjustment plate 742 forms an operating end and is provided with a handle 743 for easy operation. One end of the adjustment screw rod located inside the position adjustment plate 742 extends axially and forms a threaded fit with the total support frame 10. In this way, whenever the handle 743 is rotated, the adjustment screw rod 745 generates a screw rod slider action relative to the total support frame 10, and then the position adjustment plate 742 generates an approaching and separating action relative to the total support frame. The action of the position adjustment plate 742 can drive the sealing fixed plate 730 to generate a lifting action, and then complete the online adjustment function of the entire sealing mechanism 7.

[0186] The working process of the sealing mechanism 7 is as follows:

[0187] S71. By adjusting the handle 743, control the position of the bag pressing and sealing component 710; the control mechanism 9 controls the heating element 7122 to work, and according to the temperature measuring element 7125, the working time and power of the heating element 7122 are maintained at different temperature states according to different packaging bag attributes; at the same time, the control mechanism 9 controls the first flapping unit 600 located at the sealing mechanism 7 to work, flap and shape the packaging bag to ensure that the part to be sealed of the packaging bag is in the correct position, facilitating subsequent sealing operations;

[0188] S72. After the control mechanism 9 obtains that the packaging bag to be sealed has reached between the two sealing blocks 7121, the control mechanism 9 controls the sealing drive 720 to work. Under the action of the sealing drive 720, each heat insulation block 711 and the sealing unit 712 move in the same direction to achieve the sealing operation. At the same time, the two groups of cooperating bag pressing units 713 perform synchronous opposite actions to perform the functions of patting and shaping.

[0189] After the patting and shaping and the subsequent heat sealing operation are completed, the sealed packaging bag enters the finished product output mechanism.

[0190] 8. Finished product output mechanism

[0191] As Figure 10 shown, the finished product output mechanism 8 includes a discharge baffle 81 and a discharge drive mechanism 82 for driving the discharge baffle 81 to move up and down. The discharge baffle 81 is located on the lower side of the inclined second conveyor belt 300 and is below the side baffle in this solution. According to the signal detected by the front end corresponding to whether the packaging bag is opened, the control mechanism 9 controls the discharge drive mechanism 82 to drive the discharge baffle 81 to move up and down. When the discharge baffle 81 moves downward, one of the non-finished products or the finished products slides down from above the discharge baffle 81 through the partition. When the discharge baffle 81 moves upward, the other is output from the end of the rotating second conveyor belt 300. Here, it can be selected that the finished product falls, or it can be selected that the non-finished product falls, that is, only the finished product and the non-finished product need to be output through different channels. In this solution, the finished product falls through the discharge baffle 81, and the packaging bag without filled material is output along the end of the second conveyor belt 300.

[0192] The above-mentioned mechanisms can work independently or in combination as needed, and all belong to the technical solutions described in this application.

[0193] The above is only a preferred embodiment of the present invention, and it is not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A material supply mechanism, characterized in that: It includes a second conveying unit (120), and the second conveying unit (120) includes a material temporary storage platform (126) for temporarily storing materials. At least one side of the material temporary storage platform (126) is provided with a blanking plate (125); a scraping plate (1231) capable of pushing the materials out of the upper surface and falling onto the blanking plate (125) is arranged at the upper surface of the material temporary storage platform (126); the blanking plate (125) can perform a horizontal opening and closing action to form a blanking port convenient for material dropping. A material buffer bin with an upward-facing bin opening for receiving materials is arranged directly below the blanking port. The bin cavity of the material buffer bin and the lower plate surface of the blanking plate (125) cooperate to form a receiving cavity for accommodating materials; openings are provided at both ends of the material buffer bin, and a first pushing unit (140) that pushes the materials out of the material buffer bin by acting on the head of the materials is arranged at one of the openings, and the other opening constitutes the discharge port of the material buffer bin; The cross-sectional shape of the material buffer bin is in a "U" shape, and a first material shaping unit (130) is arranged on one side of the material buffer bin; the first material shaping unit (130) includes a first shaping drive (131) and a first shaping moving plate (132). The front surface of the first shaping moving plate (132) is in the shape of an arc plate adapted to the contour of the side wall of the material buffer bin; in the cross-section of the material buffer bin, the circle formed by the arc segment of the front surface of the first shaping moving plate (132) and the circle formed by the bottom arc surface of the material buffer bin are concentric with each other; the first shaping drive (131) is arranged outside the material buffer bin, and the power arm of the first shaping drive (131) passes through the material buffer bin and is fixedly connected to the back surface of the first shaping moving plate (132), so as to drive the first shaping moving plate (132) to perform a reciprocating linear motion along the direction perpendicular to the axis of the material buffer bin, playing a role in extruding and shaping the materials into a slender shape; There are two groups of the material buffer bins and they are respectively arranged on both sides of the material temporary storage platform (126). The surface of the scraping plate (1231) is perpendicular to the upper surface of the material temporary storage platform (126) and constitutes the symmetry plane of the two groups of material buffer bins; the scraping plate (1231) is driven by a scraping drive (1232) to generate a reciprocating linear pushing action; the pushing direction of the first pushing unit (140) is perpendicular to the action direction of the scraping plate (1231).

2. A material supply mechanism according to claim 1, characterized in that, a bracket is provided on the outer side surface of the material buffer bin, and an auxiliary blanking component (127) which is located directly above the blanking plate (125) and is used to assist the materials to accelerate and fall into the material buffer bin is fixed on the bracket.

3. A material supply mechanism according to claim 1, characterized in that, At the front end of the second conveying unit (120), there is a first conveying unit (110) for conveying materials onto the material temporary storage platform (126). The first conveying unit (110) includes a first conveyor belt (111). On both sides of the first conveyor belt (111) along the moving direction of the materials, there are baffles. At the opening of the side of the baffle, there is also a first photoelectric detection component (112) for detecting the feeding speed of the materials, a discharging component (113), and a blanking port. The driving mechanisms of the first photoelectric detection component (112) and the discharging component (113) are connected to the control mechanism (9).

4. A material supply mechanism according to claim 3, characterized in that, above the baffle near the second conveying unit (120), there is a blocking member (114) for laying the upright materials flat.

5. A material supply mechanism according to claim 3, characterized in that, at the front end of the first conveying unit (110), there is also a material turning and conveying unit (100). The material turning and conveying unit (100) includes a main conveyor belt (101), a baffle plate assembly (102), and a first turning drive (103). The width of the main conveyor belt (101) is greater than the width of the first conveyor belt (111). On both sides of the main conveyor belt (101), there are turning baffles. The first turning drive (103) drives the turning baffle (1023) in the baffle plate assembly (102) to turn. The turning baffle (1023) has two working positions. The first working position is that one end of the turning baffle (1023) leans against the left turning baffle, so that the materials enter the material recovery box and block the materials from entering the second conveying unit (120) and flowing into the next process of the device. The second working position is that one end of the turning baffle (1023) leans against the right turning baffle, and the materials enter the second conveying unit (120) while blocking the materials from entering the material recovery box.

6. A material supply mechanism according to claim 5, characterized in that, the baffle plate assembly (102) includes a first rotating pin (1021), a turning baffle (1023), and a second rotating pin (1024). One side of one end of the turning baffle (1023) is connected to the partition plate (1022) through the first rotating pin (1021). The driving end of the turning power part (1032) is connected to the second rotating pin (1024). The second rotating pin (1024) is arranged at a position near the middle of the turning baffle (1023). An arc-shaped groove (1025) for guiding the second rotating pin (1024) is arranged on the turning support (1031). The second rotating pin (1024) drives the turning baffle (1023) to rotate with the first rotating pin (1021) as the rotation axis and the second rotating pin (1024) as the acting point, so that the turning baffle (1023) rotates.

7. A material supply mechanism according to claim 5, characterized in that, the turning baffle located before the baffle plate assembly (102) is an arc-shaped plate (104) or an inclined plate.

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