A fully automatic packaging production line for counting and bagging macadamia nuts

Abstract

The present invention particularly relates to a full-automatic packaging production line for counting and bagging macadamia nuts, including a counting device and a bagging device; the counting device includes a drum feeder, a conveyor belt and a hopper, the discharge port of the drum feeder is communicated with the feeding end of the conveyor belt, the drum feeder arranges a number of macadamia nuts on the conveyor belt in sequence, and a counting sensor is provided at the discharge end of the conveyor belt; the bagging device includes a turntable mechanism, a packaging bag feeding mechanism, a bag opening mechanism, a bag sealing mechanism and a finished product discharging mechanism, the turntable mechanism includes a turntable and a multi-station intermittent rotary workbench, the intermittent rotary workbench drives the turntable to rotate, and a plurality of clamping mechanisms are arranged on the turntable along its circumferential direction in sequence, the clamping mechanisms clamp the packaging bags, and a packaging bag feeding station, a bag opening station, a macadamia nut feeding station, a bag sealing station and a finished product discharging station are arranged along the circumferential direction of the turntable in sequence; the hopper is driven by a first driving mechanism to reciprocate between the discharge end of the conveyor belt and the packaging bag at the macadamia nut feeding station.

Description

Technical Field

[0001] The present invention belongs to a full-automatic packaging production line for nuts, and particularly relates to a full-automatic packaging production line for counting and bagging macadamia nuts. Background Art

[0002] With the rise of e-commerce brands, the output and sales volume of macadamia nuts, known as the "king of dried fruits", have been continuously increasing, and the market prospect is broad. Macadamia nuts are spherical nuts with relatively regular shapes. When packaging, it is generally necessary to count and measure to complete bagging with a fixed number of nuts. The counting methods include traditional manual counting, that is, workers manually count; or mechanical device counting, that is, using a fixed mechanism for counting according to the properties of the materials; or computer combination scale counting, that is, using the principle of combined weighing for counting; or machine vision counting, that is, a camera captures images and a chip completes real-time image processing for counting. After counting, packaging is carried out. The packaging methods include traditional manual packaging; or using a single-station packaging machine for packaging.

[0003] The existing counting methods and packaging methods for macadamia nuts have the following defects:

[0004] 1. Manual counting and packaging: The production efficiency is low, the labor intensity of workers is high, and it is not suitable for large-scale packaging production;

[0005] 2. Mechanical device counting: It is easy to have missing phenomena, and it is difficult to detect and adjust when missing phenomena occur;

[0006] 3. Computer combination scale counting: Due to the uneven quality of macadamia nuts, using the weighing method for counting will produce certain errors;

[0007] 4. Machine vision counting: It needs to be equipped with a set of complex systems, the cost is expensive, and the cost performance is low for small-number packaging;

[0008] 5. Single-station packaging machine packaging: After completing multiple packaging processes on a single station, the finished products can be output. The degree of automation is low, the working beat is long, and the working efficiency is low.

[0009] With the improvement of people's living standards, the market demand for macadamia nuts is constantly rising. The research on counting and packaging macadamia nuts has very important practical application value. Summary of the Invention

[0010] To solve the problem of incompatibility among high efficiency, high precision and low cost in the existing macadamia nut counting and packaging technology, the present invention provides a full-automatic packaging production line for counting and bagging macadamia nuts.

[0011] To solve the above technical problems, the technical solution adopted by the present invention is as follows. An automatic packaging production line for counting and bagging macadamia nuts includes a counting device and a bagging device. The counting device is arranged on the side of the bagging device;

[0012] The counting device includes a drum feeder, a conveyor belt, and a hopper. The discharge port of the drum feeder is communicated with the feeding end of the conveyor belt. The drum feeder is used to arrange a number of macadamia nuts on the conveyor belt in sequence. A counting sensor is arranged at the discharge end of the conveyor belt. The hopper is arranged on the side of the discharge end of the conveyor belt;

[0013] The bagging device includes a turntable mechanism, a packaging bag feeding mechanism, a bag opening mechanism, a bag sealing mechanism, and a finished product discharging mechanism. The turntable mechanism includes a turntable and a multi-station intermittent rotary worktable. The intermittent rotary worktable is used to drive the turntable to rotate. A plurality of clamping mechanisms are arranged on the turntable along its circumferential direction in sequence. The clamping mechanisms are used to clamp the packaging bags. A packaging bag feeding station, a bag opening station, a macadamia nut feeding station, a bag sealing station, and a finished product discharging station are arranged on the turntable along its circumferential direction in sequence;

[0014] The packaging bag feeding mechanism is arranged at the packaging bag feeding station. The bag opening mechanism is arranged between the bag opening station and the macadamia nut feeding station. The bag sealing mechanism is arranged at the bag sealing station. The finished product discharging mechanism is arranged at the finished product discharging station. The hopper is driven by a first driving mechanism to reciprocate between the discharge end of the conveyor belt and the packaging bag at the macadamia nut feeding station.

[0015] Preferably, the bag opening mechanism includes an opening structure and a bag expanding structure. The opening structure is arranged at the bag opening station. The bag expanding structure is arranged between the bag opening station and the macadamia nut feeding station. The opening structure is used to open the bag mouth of the packaging bag from the outside at the bag opening station. The bag expanding structure is used to expand the packaging bag from the inside of the bag mouth. When a set number of macadamia nuts in the hopper are loaded into the packaging bag at the macadamia nut feeding station, the bag expanding structure resets to the bag opening station. The bag expanding structure keeps the packaging bag expanded until the hopper puts a fixed amount of macadamia nuts into the packaging bag. The opening structure and the bag expanding structure cooperate skillfully to ensure that the bag mouth of the package is opened conveniently and stably.

[0016] Furthermore, the opening structure includes a first cylinder, a slide bar, a first bracket, a first cam, a first roller, and left and right inserts arranged on both sides of the bag opening of the packaging bag. The turntable mechanism also includes a main shaft, which is vertically arranged and connected to the turntable via a clutch. The intermittent rotary table is connected to the main shaft. The slide bar is arranged to slide vertically within the main shaft. The output end of the first cylinder is connected to the bottom end of the slide bar. The first cam is sleeved on the outer circumference of the slide bar. The first cam is fixedly arranged. The first bracket is fixedly connected to the top end of the slide bar. The first roller is arranged on the first bracket. The first roller cooperates with the first cam and drives the left and right inserts to move closer to or away from each other through the first connecting rod assembly. The opening structure is cleverly designed, and the clutch realizes the rotation and reset of the opening structure. It is simple, reliable, and stable in operation.

[0017] Furthermore, the opening structure includes a second drive mechanism, a second bracket, and left and right suction cups positioned on either side of the bag opening. The second bracket is positioned at the bag-opening station, and the second drive mechanism is mounted on the second bracket. The second drive mechanism drives the left and right suction cups toward or away from each other via a second linkage assembly. The opening structure is ingeniously designed: the left and right suction cups contact the bag opening and then move away from each other to open the bag opening. The left and right inserts are then inserted into the bag opening to open it. This simple, reliable, and stable operation ensures smooth operation.

[0018] Preferably, the clamping mechanism includes a left clamping jaw, a right clamping jaw, and a third roller. The left clamping jaw and the right clamping jaw are respectively rotatably mounted on a turntable, and the left clamping jaw and the right clamping jaw rotate toward or away from each other along the circumference of the turntable. A third cam is mounted on the main shaft, and the third cam is fixedly mounted. The third roller cooperates with the third cam and drives the left clamping jaw and the right clamping jaw to rotate toward or away from each other along the circumference of the turntable via a third connecting rod assembly. In other words, the left clamping jaw and the right clamping jaw are driven to move toward or away from each other. When the left clamping jaw and the right clamping jaw approach each other, the bag opening of the packaging bag becomes loose, facilitating the opening of the packaging bag by the opening structure from the outside and the opening structure to open the packaging bag from the inside.

[0019] Furthermore, the left and right grippers have identical structures, each comprising a fixed finger, a movable finger, and a shifting block. The fixed finger is rotatably mounted on a turntable, while the movable finger is positioned opposite the fixed finger. A spring is provided between the movable and fixed fingers. Both the bag loading station and the finished product unloading station are equipped with an opening mechanism. The opening mechanism at the finished product unloading station serves as the finished product unloading mechanism. The opening mechanism is used to shift the shifting block, which, via a sixth connecting rod assembly, drives the movable finger away from the fixed finger to release the bag. The left and right grippers have simple structures, with the fixed and movable fingers working together to achieve gripping and release, making operation easy.

[0020] Preferably, the packaging bag feeding mechanism includes a silo, a bag-taking suction cup, bag-taking clamping jaws, a fourth support, and a fourth driving mechanism. The packaging bags are stacked in the silo from bottom to top. The bag-taking suction cup is arranged below the silo in a liftable manner. The bag-taking suction cup rises until it sucks a packaging bag and then descends and resets. The fourth driving mechanism drives the bag-taking clamping jaws to move between the bag-taking suction cup and the clamping mechanism at the packaging bag feeding station through a cam-linkage assembly. The fourth support is arranged at the packaging bag feeding station, and the cam-linkage assembly is arranged on the fourth support. The structure of the packaging bag feeding mechanism is simple and the cost is low.

[0021] Preferably, the bag-sealing mechanism includes a fifth support, a fifth driving mechanism, a left heat-sealing pressing plate, and a right heat-sealing pressing plate. The fifth support is arranged at the bag-sealing station. The fifth driving mechanism drives the left heat-sealing pressing plate and the right heat-sealing pressing plate to move closer to each other or move away from each other through a fifth linkage assembly. The structure of the bag-sealing mechanism is simple and the cost is low.

[0022] Preferably, the drum feeder includes a rotatably arranged toothed drum. A plurality of grooves are sequentially formed on the outer periphery of the toothed drum along its rotation direction. Each groove is used to accommodate a macadamia nut. An outer cover is arranged outside the outer periphery of the toothed drum. A feed inlet is formed above the outer cover, and a discharge outlet is formed below the outer cover. The discharge outlet of the outer cover is located above the feed end of the conveyor belt. Ensure that the macadamia nuts are arranged on the conveyor belt in sequence, and then combine with the counting sensor to ensure accurate counting of the macadamia nuts.

[0023] Preferably, the turntable mechanism, the packaging bag feeding mechanism, the bag-stretching mechanism, the bag-sealing mechanism, and the finished product discharging mechanism are integrally arranged on the workbench. The overall layout of this full-automatic packaging production line is reasonable and compact, occupies a small area, and is convenient for overall relocation.

[0024] Beneficial effects:

[0025] 1. For the full-automatic packaging production line for counting and bagging macadamia nuts of the present invention, the combination of the drum feeder and the counting sensor makes the counting process controllable while accurately counting, automatically controls the number of nuts bagged, and avoids missing or leaking. The turntable mechanism, the packaging bag feeding mechanism, the bag-stretching mechanism, the bag-sealing mechanism, and the finished product discharging mechanism cooperate skillfully to realize the automatic feeding of packaging bags. The counting device and the bagging device cooperate to realize the automatic counting and bagging of macadamia nuts by this full-automatic packaging production line;

[0026] 2. For the full-automatic packaging production line for counting and bagging macadamia nuts of the present invention, the overall layout is reasonable and compact. Especially the setting of the turntable mechanism greatly saves the working space, and at the same time has high packaging efficiency and packaging stability;

[0027] 3. The fully automatic packaging production line for counting and bagging macadamia nuts of the present invention adopts a mechanical transmission structure for the turntable mechanism, the packaging bag feeding mechanism, the bag opening mechanism, the bag sealing mechanism and the finished product discharging mechanism, which has a simple and reliable structure, stable operation and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention, and those of ordinary skill in the art can obtain other drawings according to these drawings without creative efforts.

[0029] Figure 1 is a three-dimensional structural schematic diagram of the fully automatic packaging production line for counting and bagging macadamia nuts of the present invention;

[0030] Figure 2 is a top view schematic diagram of the fully automatic packaging production line for counting and bagging macadamia nuts of the present invention;

[0031] Figure 3 is a three-dimensional structural schematic diagram of the counting device of the fully automatic packaging production line of the present invention;

[0032] Figure 4 is a three-dimensional structural schematic diagram of the bagging device of the fully automatic packaging production line of the present invention;

[0033] Figure 5 is a cross-sectional view schematic diagram of the turntable mechanism of the fully automatic packaging production line of the present invention;

[0034] Figure 6 is a three-dimensional structural schematic diagram of the clamping mechanism and the clip opening mechanism of the fully automatic packaging production line of the present invention;

[0035] Figure 7 is a three-dimensional structural schematic diagram of the clamping mechanism of the fully automatic packaging production line of the present invention;

[0036] Figure 8 is a three-dimensional structural schematic diagram of the packaging bag feeding mechanism of the fully automatic packaging production line of the present invention;

[0037] Figure 9 is a three-dimensional structural schematic diagram of the bag opening mechanism of the fully automatic packaging production line of the present invention;

[0038] Figure 10 is a three-dimensional structural schematic diagram of the bag sealing mechanism of the fully automatic packaging production line of the present invention;

[0039] In the figure: 1. Counting device; 11. Drum feeder; 111. Tooth drum; 112. Groove; 113. Outer cover; 12. Conveyor belt; 13. Hopper; 14. Counting sensor; 15. First driving mechanism; 2. Bagging device; 21. Turntable mechanism; 211. Turntable; 212. Intermittent rotary worktable; 213. Main shaft; 214. Clutch; 22. Packaging bag loading mechanism; 221. Bin; 222. Bag-taking suction cup; 223. Bag-taking gripper; 224. Fourth bracket; 225. Fourth driving mechanism; 226. Cam-link assembly; 23. Bag-opening mechanism; 231. Opening structure; 2311. Second driving mechanism; 2312. Second bracket; 2313. Left suction cup; 2314. Right suction cup; 2315. Second link assembly; 232. Mouth-supporting structure; 2321. First cylinder; 2322. Slide bar; 2323. First bracket; 2324. First cam; 2325. First roller; 2326. Left insert piece; 2327. Right insert piece; 2328. First link assembly; 24. Bag-sealing mechanism; 241. Fifth bracket; 242. Fifth driving mechanism; 243. Left heat-sealing pressure plate; 244. Right heat-sealing pressure plate; 245. Fifth link assembly; 25. Finished product discharging mechanism; 26. Clamping mechanism; 261. Left gripper; 262. Right gripper; 2621. Fixed finger; 2622. Movable finger; 2623. Dial block; 2624. Sixth link assembly; 263. Third roller; 264. Third cam; 265. Third link assembly; 27. Clamping-opening mechanism; 271. Swing block; 272. Third bracket; 273. Swing block cylinder; 274. Seventh link assembly; S1. Packaging bag loading station; S2. Bag-opening station; S3. Macadamia nut loading station; S4. Bag-sealing station; S5. Finished product discharging station. Detailed implementation manners

[0040] 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. The following description of at least one exemplary embodiment is actually only illustrative and in no way restrictive of the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts belong to the scope of protection of the present invention.

[0041] Embodiment

[0042] As Figures 1 to 10As shown in the figure, a fully automatic packaging production line for counting and bagging macadamia nuts includes a counting device 1 and a bagging device 2. The counting device 1 is arranged on the side of the bagging device 2. The counting device 1 includes a drum feeder 11, a conveyor belt 12, and a hopper 13. The discharge port of the drum feeder 11 is communicated with the feeding end of the conveyor belt 12. The drum feeder 11 is used to arrange a number of macadamia nuts on the conveyor belt 12 in sequence. A counting sensor 14 is arranged at the discharge end of the conveyor belt 12. In this embodiment, the counting sensor 14 is a transmissive photoelectric sensor. The hopper 13 is arranged on the side of the discharge end of the conveyor belt 12. The bagging device 2 includes a turntable mechanism 21, a packaging bag feeding mechanism 22, a bag opening mechanism 23, a bag sealing mechanism 24, and a finished product discharging mechanism 25. The turntable mechanism 21 includes a turntable 211 and a multi-station intermittent rotary workbench 212. In this embodiment, the intermittent rotary workbench 212 is an eight-station intermittent rotary workbench. The intermittent rotary workbench 212 is used to drive the turntable 211 to rotate. A plurality of clamping mechanisms 26 are arranged on the turntable 211 along its circumferential direction. The clamping mechanisms 26 are used to clamp the packaging bags. A packaging bag feeding station S1, a bag opening station S2, a macadamia nut feeding station S3, a bag sealing station S4, and a finished product discharging station S5 are arranged on the turntable 211 along its circumferential direction in sequence. The packaging bag feeding mechanism 22 is arranged at the packaging bag feeding station S1. The bag opening mechanism 23 is arranged between the bag opening station S2 and the macadamia nut feeding station S3. The bag sealing mechanism 24 is arranged at the bag sealing station S4. The finished product discharging mechanism 25 is arranged at the finished product discharging station S5. The hopper 13 is driven by a first driving mechanism 15 to reciprocate between the discharge end of the conveyor belt 12 and the packaging bag at the macadamia nut feeding station S3. In this embodiment, the first driving mechanism 15 includes a rotary cylinder, and a discharge valve is arranged in the hopper 13.

[0043] In order to ensure that the bag mouth of the packaging bag is opened so that the quantitative macadamia nuts in the hopper 13 can be accurately filled into the packaging bag. In this embodiment, as Figure 4 , Figure 5 , Figure 7 and Figure 9As shown, the bag opening mechanism 23 includes an opening structure 231 and a bag mouth expanding structure 232. The opening structure 231 is arranged at the bag opening station S2, and the bag mouth expanding structure 232 is arranged between the bag opening station S2 and the macadamia nut feeding station S3. The opening structure 231 is used to open the bag mouth of the packaging bag from the outside at the bag opening station S2, and the bag mouth expanding structure 232 is used to expand the packaging bag from the inside of the bag mouth. When the set number of macadamia nuts in the hopper 13 are loaded into the packaging bag at the macadamia nut feeding station S3, the bag mouth expanding structure 232 resets to the bag opening station S2. That is, in this embodiment, the opening structure 231 opens the bag mouth of the packaging bag from the outside at the bag opening station S2, and then the bag mouth expanding structure 232 expands the packaging bag from the inside of the bag mouth, and the bag mouth expanding structure 232 keeps the packaging bag expanded until the set number of macadamia nuts in the hopper 13 are loaded into the packaging bag at the macadamia nut feeding station S3, and then the bag mouth expanding structure 232 resets to the bag opening station S2. Specifically, in this embodiment, the bag mouth expanding structure 232 includes a first cylinder 2321, a slide rod 2322, a first bracket 2323, a first cam 2324, a first roller 2325, and a left insert piece 2326 and a right insert piece 2327 arranged on both sides of the bag mouth of the packaging bag. The turntable mechanism 21 also includes a main shaft 213, and the main shaft 213 is arranged vertically. The main shaft 213 is connected to the turntable 211 through a clutch 214, and the clutch 214 enables the turntable 211 to remain stationary when the bag mouth expanding structure 232 rotates and resets. The clutch 214 in this embodiment is a one-way roller overrunning clutch. The intermittent rotary workbench 212 is connected to the main shaft 213. The slide rod 2322 is slidably arranged in the main shaft 213 in the vertical direction. In this embodiment, the slide rod 2322 is connected to the main shaft 213 through a flat key. The output end of the first cylinder 2321 is connected to the bottom end of the slide rod 2322. The first cam 2324 is sleeved on the outer periphery of the slide rod 2322, and the first cam 2324 is fixedly arranged. The first bracket 2323 is fixedly connected to the top end of the slide rod 2322. The first roller 2325 is arranged on the first bracket 2323. The first roller 2325 cooperates with the first cam 2324 and drives the left insert piece 2326 and the right insert piece 2327 to move closer to or away from each other through a first link assembly 2328. At the bag opening station S2, the left insert piece 2326 and the right insert piece 2327 move closer to each other to facilitate insertion into the bag mouth of the packaging bag. During the process from the bag opening station S2 to the macadamia nut feeding station S3, the left insert piece 2326 and the right insert piece 2327 move away from each other until the bag mouth is expanded;Specifically, in this embodiment, the opening structure 231 includes a second drive mechanism 2311, a second bracket 2312, and left and right suction cups 2313 and 2314 disposed on either side of the bag opening. The second bracket 2312 is disposed at the bag opening station S2, and the second drive mechanism 2311 is disposed on the second bracket 2312. The second drive mechanism 2311 drives the left and right suction cups 2313 and 2314 to move toward or away from each other via a second connecting rod assembly 2315. The left and right suction cups 2313 and 2314 contact the bag opening and then move away from each other to suck the bag opening open. The left and right inserts 2326 and 2327 are then inserted into the bag opening to open it. The clever coordination between the opening structure 231 and the opening-opening structure 232 ensures convenient and stable opening of the bag opening.

[0044] In order to ensure that the clamping mechanism 26 firmly clamps the packaging bag, in this embodiment, Figures 4 to 7As shown, the clamping mechanism 26 includes a left jaw 261, a right jaw 262 and a third roller 263. The left jaw 261 and the right jaw 262 are respectively rotatably arranged on the turntable 211, and the left jaw 261 and the right jaw 262 rotate closer to or away from each other along the circumferential direction of the turntable 211. A third cam 264 is sleeved on the main shaft 213, and the third cam 264 is fixedly arranged. The third roller 263 cooperates with the third cam 264 and drives the left jaw 261 and the right jaw 262 to rotate closer to or away from each other along the circumferential direction of the turntable 211 through a third link assembly 265. When the left jaw 261 and the right jaw 262 approach each other, the mouth of the packaging bag becomes loose, facilitating the opening structure 231 to open the mouth of the packaging bag from the outside, and the mouth-opening structure 232 to expand the packaging bag from the inside of the mouth of the packaging bag. At the same time, it also avoids pulling the packaging bag off the clamping mechanism 26 during mouth-opening; further, in this embodiment, the left jaw 261 and the right jaw 262 have the same structure, and both include a fixed finger 2621, a movable finger 2622 and a dial block 2623. The fixed finger 2621 is rotatably arranged on the turntable 211, the movable finger 2622 is arranged opposite to the fixed finger 2621, and a spring is arranged between the movable finger 2622 and the fixed finger 2621. Clamping release mechanisms 27 are arranged at both the packaging bag loading station S1 and the finished product unloading station S5. The clamping release mechanism 27 at the finished product unloading station S5 serves as the finished product unloading mechanism 25. The clamping release mechanism 27 is used to toggle the dial block 2623, and the dial block 2623 drives the movable finger 2622 to move away from the fixed finger 2621 through a sixth link assembly 2624 to release the packaging bag; further, in this embodiment, the clamping release mechanism 27 includes a swing block 271, a third bracket 272 and a swing block cylinder 273. The third brackets 272 are arranged at both the packaging bag loading station S1 and the finished product unloading station S5. The swing block 271 is swingably arranged on the third bracket 272. The swing block cylinder 273 drives the swing block 271 to swing through a seventh link assembly 274 to toggle the dial block 2623, and the dial block 2623 then drives the movable finger 2622 to move away from the fixed finger 2621 through the sixth link assembly 2624 to release the packaging bag, and the movable finger 2622 is then reset to the clamping state under the action of the spring.

[0045] In order to ensure the stable and accurate loading of the packaging bag while reducing costs, in this embodiment, as Figure 4 and Figure 8As shown, the packaging bag loading mechanism 22 includes a bin 221, a bag-taking suction cup 222, a bag-taking gripper 223, a fourth support 224, and a fourth driving mechanism 225. The packaging bags are stacked in the bin 221 from bottom to top. The bag-taking suction cup 222 is arranged below the bin 221 in a liftable manner. The bag-taking suction cup 222 rises until it sucks a packaging bag and then descends to reset. The fourth driving mechanism 225 drives the bag-taking gripper 223 to move between the bag-taking suction cup 222 and the clamping mechanism 26 at the packaging bag loading station S1 through a cam-linkage assembly 226. The fourth support 224 is arranged at the packaging bag loading station S1, and the cam-linkage assembly 226 is arranged on the fourth support 224.

[0046] In order to ensure stable and reliable bag sealing while reducing costs, in this embodiment, as Figure 4 and Figure 10 shown, the bag sealing mechanism 24 includes a fifth support 241, a fifth driving mechanism 242, a left heat-sealing pressing plate 243, and a right heat-sealing pressing plate 244. The fifth support 241 is arranged at the bag sealing station S4. The fifth driving mechanism 242 drives the left heat-sealing pressing plate 243 and the right heat-sealing pressing plate 244 to move closer to each other or move away from each other through a fifth linkage assembly 245.

[0047] In order to ensure accurate counting of macadamia nuts, in this embodiment, as Figure 3 shown, the drum feeder 11 includes a rotatably arranged toothed drum 111. A plurality of grooves 112 are sequentially formed on the outer periphery of the toothed drum 111 along its rotation direction. Each groove 112 is used to accommodate a macadamia nut. An outer cover 113 is arranged outside the outer periphery of the toothed drum 111. An inlet is formed above the outer cover 113, and an outlet is formed below the outer cover 113. The outlet of the outer cover 113 is located above the inlet end of the conveyor belt 12, ensuring that the macadamia nuts are sequentially arranged on the conveyor belt 12. Combined with the counting sensor 14, the accurate counting of macadamia nuts is ensured.

[0048] As Figure 1 and Figure 2 shown, the turntable mechanism 21, the packaging bag loading mechanism 22, the bag stretching mechanism 23, the bag sealing mechanism 24, and the finished product unloading mechanism 25 of this embodiment are integrally arranged on the workbench. The overall layout of this fully automatic packaging production line is reasonable and compact, occupying a small area and being convenient for overall relocation.

[0049] The working principle is as follows:

[0050] First, the bag-taking suction cup 222 rises until it sucks a packaging bag from the bottom of the hopper 221 and then descends to reset. The fourth driving mechanism 225 then drives the bag-taking clamping claw 223 to clamp a packaging bag from the bag-taking suction cup 222 through the cam connecting rod assembly 226. At this time, the turntable 211 pauses, and the clamping mechanism 27 drives the left clamping claw 261 and the right clamping claw 262 to open. The cam connecting rod assembly 226 continues to drive the bag-taking clamping claw 223 to insert the packaging bag into the left clamping claw 261 and the right clamping claw 262 at the packaging bag loading station S1. The clamping mechanism 27 resets again, and the left clamping claw 261 and the right clamping claw 262 are respectively reset to the clamping state under the action of the spring to clamp the packaging bag; the intermittent rotary table 212 then drives the turntable 211 to rotate clockwise until the turntable 211 drives the packaging bag Move to the bag opening station S2, at this time the turntable 211 pauses, the second driving mechanism 2311 drives the left suction cup 2313 and the right suction cup 2314 to fit the two sides of the bag opening of the packaging bag through the second connecting rod assembly 2315, and then move away from each other to suck the bag opening open, the first cylinder 2321 then drives the slide bar 2322 to descend, driving the left insert piece 2326 and the right insert piece 2327 to insert into the bag opening, the intermittent rotary table 212 drives the turntable 211 to continue to rotate clockwise, at this time the first roller 2325 cooperates with the first cam 2324 and drives the left insert piece 2326 and the right insert piece 2327 to move away from each other to open the bag opening, until the packaging bag rotates with the turntable 211 to the macadamia nut feeding station S3, at this time the bag opening remains open and the turntable 211 pauses;

[0051] At the same time, batches of macadamia nuts are fed into the feeding port of the outer cover 113, and as the gear drum 111 rotates, each groove 112 on the gear drum 111 takes away one macadamia nut in turn, and then arranged on the conveyor belt 12 in turn from the discharge port of the outer cover 113. The conveyor belt 12 transports the macadamia nuts to the hopper 13, and after being counted by the counting sensor 14, a fixed amount of macadamia nuts is input into the hopper 13. The first driving mechanism 15 then drives the hopper 13 to move above the packaging bag at the macadamia nut loading station S3. At this time, the valve of the hopper 13 is opened to input a fixed amount of macadamia nuts into the packaging bag in the expanded state. The hopper 13 is reset again, and at the same time, the first cylinder 2321 drives the slide bar 2322 to rise, driving the left insert 2326 and the right insert 2327 to separate from the bag mouth. The clutch 214 is separated from the turntable 211, and the intermittent rotary table 212 drives the main shaft 213 to rotate counterclockwise until the expansion structure 232 is reset;

[0052] Then, the clutch 214 is linked with the turntable 211, and the intermittent rotary table 212 drives the turntable 211 to continue rotating clockwise until the turntable 211 drives the packaging bag to move to the sealing station. At this time, the turntable 211 pauses, and the fifth driving mechanism 242 drives the left heat sealing plate 243 and the right heat sealing plate 244 through the fifth connecting rod assembly 245 to fit the bag opening of the heat-sealed packaging bag and then reset. The intermittent rotary table 212 drives the turntable 211 to continue rotating clockwise until the turntable 211 drives the packaging bag to move to the finished product unloading station S5. At this time, the turntable 211 pauses, and the clamping mechanism 27 drives the left clamping jaw 261 and the right clamping jaw 262 to open and release the packaging bag for unloading. The above actions are repeated to realize the continuous operation of the fully automatic packaging production line.

[0053] Among them, when the turntable 211 drives the packaging bag to move from the packaging bag loading station S1 to the bag opening station S2, the third roller 263 cooperates with the third cam 264 and drives the left clamping jaw 261 and the right clamping jaw 262 to rotate closer to each other through the third connecting rod assembly 265, so that the bag opening of the packaging bag becomes loose, making it easier for the left suction cup 2313 and the right suction cup 2314 to open the bag opening of the packaging bag from the outside, and the left insert 2326 and the right insert 2327 to open the bag opening of the packaging bag from the inside, and ensure that the bag opening is tight. The packaging bag will not separate from the left clamping jaw 261 and the right clamping jaw 262; when the turntable 211 drives the packaging bag to move from the bag opening station S2 to the macadamia nut loading station S3, the left clamping jaw 261 and the right clamping jaw 262 remain close to each other. When the turntable 211 drives the packaging bag to move to the bag sealing station S4, the third roller 263 cooperates with the third cam 264 and drives the left clamping jaw 261 and the right clamping jaw 262 away from each other through the third connecting rod assembly 265 until the bag opening is flattened, preparing for the heat-sealed bag opening.

[0054] The above are only preferred specific embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with this technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solutions and inventive concepts of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. An automatic packaging production line for counting and bagging macadamia nuts, characterized in that: It includes a counting device (1) and a bagging device (2), and the counting device (1) is arranged on the side of the bagging device (2); The counting device (1) includes a drum feeder (11), a conveyor belt (12) and a hopper (13). The discharge port of the drum feeder (11) is communicated with the feeding end of the conveyor belt (12). The drum feeder (11) is used to arrange a number of macadamia nuts on the conveyor belt (12) in sequence. A counting sensor (14) is arranged at the discharge end of the conveyor belt (12), and the hopper (13) is arranged on the side of the discharge end of the conveyor belt (12); The bagging device (2) includes a turntable mechanism (21), a packaging bag feeding mechanism (22), a bag opening mechanism (23), a bag sealing mechanism (24) and a finished product discharging mechanism (25). The turntable mechanism (21) includes a turntable (211) and a multi-station intermittent rotary workbench (212). The intermittent rotary workbench (212) is used to drive the turntable (211) to rotate. A plurality of clamping mechanisms (26) are arranged on the turntable (211) in sequence along its circumferential direction. The clamping mechanism (26) is used to clamp the packaging bag. A packaging bag feeding station (S1), a bag opening station (S2), a macadamia nut feeding station (S3), a bag sealing station (S4) and a finished product discharging station (S5) are arranged in sequence along the circumferential direction of the turntable (211); The packaging bag feeding mechanism (22) is arranged at the packaging bag feeding station (S1), the bag opening mechanism (23) is arranged between the bag opening station (S2) and the macadamia nut feeding station (S3), the bag sealing mechanism (24) is arranged at the bag sealing station (S4), the finished product discharging mechanism (25) is arranged at the finished product discharging station (S5), and the hopper (13) is driven by a first driving mechanism (15) to reciprocate between the discharge end of the conveyor belt (12) and the packaging bag at the macadamia nut feeding station (S3); The bag opening mechanism (23) includes an opening structure (231) and a mouth expanding structure (232); The bag-opening structure (232) includes a first cylinder (2321), a sliding rod (2322), a first bracket (2323), a first cam (2324), a first roller (2325), and a left insert piece (2326) and a right insert piece (2327) arranged on both sides of the bag mouth of the packaging bag. The turntable mechanism (21) further includes a main shaft (213). The main shaft (213) is vertically arranged. The main shaft (213) is connected to the turntable (211) through a clutch (214). The intermittent rotary worktable (212) is connected to the main shaft (213). The sliding rod (2322) is slidably arranged in the main shaft (213) in the vertical direction. The sliding rod (2322) is connected to the main shaft (213) through a flat key. The output end of the first cylinder (2321) is connected to the bottom end of the sliding rod (2322). The first cam (2324) is sleeved on the outer periphery of the sliding rod (2322). The first cam (2324) is fixedly arranged. The first bracket (2323) is fixedly connected to the top end of the sliding rod (2322). The first roller (2325) is arranged on the first bracket (2323). The first roller (2325) cooperates with the first cam (2324) and drives the left insert piece (2326) and the right insert piece (2327) to move closer to or away from each other through a first connecting rod assembly (2328).

2. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 1, wherein: The opening structure (231) is arranged at the bag-opening station (S2). The bag-opening structure (232) is arranged between the bag-opening station (S2) and the macadamia nut feeding station (S3). The opening structure (231) is used to open the bag mouth of the packaging bag from the outside at the bag-opening station (S2). The bag-opening structure (232) is used to expand the packaging bag from the inside of the bag mouth of the packaging bag. When a set number of macadamia nuts in the hopper (13) are loaded into the packaging bag at the macadamia nut feeding station (S3), the bag-opening structure (232) resets to the bag-opening station (S2).

3. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 1 or 2, characterized in that: The opening structure (231) includes a second driving mechanism (2311), a second bracket (2312), and a left suction cup (2313) and a right suction cup (2314) arranged on both sides of the bag mouth of the packaging bag. The second bracket (2312) is arranged at the bag-opening station (S2). The second driving mechanism (2311) is arranged on the second bracket (2312). The second driving mechanism (2311) drives the left suction cup (2313) and the right suction cup (2314) to move closer to or away from each other through a second connecting rod assembly (2315).

4. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 3, characterized in that: The clamping mechanism (26) comprises a left clamping jaw (261), a right clamping jaw (262) and a third roller (263). The left clamping jaw (261) and the right clamping jaw (262) are respectively rotatably arranged on the turntable (211), and the left clamping jaw (261) and the right clamping jaw (262) rotate closer to or farther from each other along the circumference of the turntable (211). A third cam (264) is sleeved on the main shaft (213), and the third cam (264) is fixedly arranged. The third roller (263) cooperates with the third cam (264) and drives the left clamping jaw (261) and the right clamping jaw (262) to rotate closer to or farther from each other along the circumference of the turntable (211) through a third connecting rod assembly (265).

5. The fully automatic packaging production line for counting and bagging macadamia nuts according to claim 4, characterized in that: The left clamp (261) and the right clamp (262) have the same structure, both including a fixed finger (2621), a movable finger (2622) and a shifting block (2623), the fixed finger (2621) is rotatably arranged on the turntable (211), the movable finger (2622) is arranged opposite to the fixed finger (2621), a spring is arranged between the movable finger (2622) and the fixed finger (2621), and an opening clamp mechanism (27) is provided at the packaging bag loading station (S1) and the finished product unloading station (S5), the opening clamp mechanism (27) at the finished product unloading station (S5) serves as the finished product unloading mechanism (25), the opening clamp mechanism (27) is used to shift the shifting block (2623), and the shifting block (2623) drives the movable finger (2622) to move away from the fixed finger (2621) through the sixth connecting rod assembly (2624) to release the packaging bag.

6. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 5, characterized in that: The packaging bag feeding mechanism (22) comprises a hopper (221), a bag taking suction cup (222), a bag taking clamp (223), a fourth bracket (224) and a fourth driving mechanism (225). The packaging bags are stacked in the hopper (221) from bottom to top. The bag taking suction cup (222) is arranged below the hopper (221) in a liftable manner. The bag taking suction cup (222) rises until it sucks up a packaging bag and then falls back to its original position. The fourth driving mechanism (225) drives the bag taking clamp (223) to move between the bag taking suction cup (222) and the clamping mechanism (26) at the packaging bag feeding station (S1) through a cam connecting rod assembly (226). The fourth bracket (224) is arranged at the packaging bag feeding station (S1), and the cam connecting rod assembly (226) is arranged on the fourth bracket (224).

7. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 1, characterized in that: The bag sealing mechanism (24) includes a fifth bracket (241), a fifth driving mechanism (242), a left heat sealing plate (243) and a right heat sealing plate (244); the fifth bracket (241) is arranged at the bag sealing station (S4); the fifth driving mechanism (242) drives the left heat sealing plate (243) and the right heat sealing plate (244) to move closer to each other or away from each other through a fifth connecting rod assembly (245).

8. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 1, characterized in that: The drum feeder (11) includes a rotatably arranged toothed drum (111). A plurality of grooves (112) are sequentially formed in the outer periphery of the toothed drum (111) along its rotation direction. Each groove (112) is used to accommodate a macadamia nut. An outer cover (113) is provided outside the outer periphery of the toothed drum (111). A feed inlet is formed above the outer cover (113), and a discharge outlet is formed below the outer cover (113). The discharge outlet of the outer cover (113) is located above the feed end of the conveyor belt (12).

9. The fully automatic packaging production line for macadamia nut counting and bagging according to claim 1, characterized in that: The turntable mechanism (21), the packaging bag loading mechanism (22), the bag opening mechanism (23), the bag sealing mechanism (24) and the finished product discharging mechanism (25) are integrally arranged on the workbench.

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