Grain weighing, bagging and sewing machine

Abstract

The utility model relates to the field of grain packaging, and discloses a grain weighing, bagging and sewing machine which comprises an installation frame, a conveying belt is arranged in the installation frame, a hopper used for adding grains is fixedly connected to the top of the installation frame, an electromagnetic valve is arranged in a discharging port of the hopper, and a feeding port of the electromagnetic valve is connected with the conveying belt. Weighing sensors are fixedly connected to the inner wall of the top of the mounting frame, the tops of the two weighing sensors are fixedly connected with the same weighing hopper, the bottom of the weighing hopper fixedly communicates with a discharging pipe, and the two sides of the discharging pipe are fixedly connected with covers. Compared with the prior art, the bag sewing machine has the advantages that before the bag sewing machine body sews a packaging bag, the bag opening of the packaging bag can be extruded, folded and flattened, so that the bag openings on the two sides of the packaging bag are attached and flattened to be laid on the base, the influence on the bag sewing quality is avoided, the packaging bag can be automatically clamped and fixed, and the production efficiency is improved. And people do not need to hold packaging bags with hands for bagging, so that the bagging efficiency is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of grain packaging, in particular to a grain weighing, bagging and bag sewing machine. Background Art

[0002] Cereals encompass a broad range of crops, including rice, wheat, millet, soybeans, and other grains. These crops, primarily consisting of seeds and fruits, are a traditional staple food for many Asian peoples. In the field of grain processing and packaging, a grain weighing, bagging, and bag sewing machine plays a crucial role. It efficiently completes a series of operations, including quantitative weighing, bagging, and bag sewing, significantly improving production efficiency, reducing labor intensity, and ensuring accurate and consistent packaging.

[0003] However, there are still some shortcomings in the grain weighing, bagging and sewing machines in the technology. When the bag sewing machine sews the packaging bags, it is inconvenient to squeeze, fold and flatten the packaging bags, which makes the bag openings on both sides of the packaging bags easy to open and wrinkles easily occur, affecting the quality of the sewing bags. Moreover, when the grains are weighed and bagged, it is inconvenient to automatically clamp and fix the packaging bags. People need to hold the packaging bags and put them on the outside of the baler's discharge port for bagging, which affects the efficiency of weighing and bagging. Therefore, we proposed a grain weighing, bagging and sewing machine to solve the above problems. Utility Model Content

[0004] The purpose of the utility model is to provide a grain weighing, bagging and bag sewing machine, which can squeeze, fold and flatten the bag openings of the packaging bags before the bag sewing machine body sews the packaging bags, so that the bag openings on both sides of the packaging bags are attached and flattened on the base, avoiding affecting the quality of the sewing bags, and can automatically clamp and fix the packaging bags, eliminating the need for people to hold the packaging bags by hand for bagging, thereby improving the efficiency of bagging.

[0005] The above-mentioned technical objectives of the present utility model are achieved through the following technical solutions: a grain weighing, bagging and bag sewing machine, comprising a mounting frame, a conveyor belt is provided in the mounting frame, a hopper for adding grain is fixedly connected to the top of the mounting frame, an electromagnetic valve is provided in the discharge port of the hopper, a weighing sensor is fixedly connected to the top inner wall of the top of the mounting frame, the tops of two weighing sensors are fixedly connected to the same weighing hopper, the bottom of the weighing hopper is fixedly connected to a discharge pipe, both sides of the discharge pipe are fixedly connected to a cover body, a gate mechanism is provided between the two cover bodies and the discharge pipe, a clamping mechanism for clamping the packaging bag is provided between the two cover bodies and the discharge pipe, a pushing mechanism for pushing the packaging bag downward is provided between the discharge pipe and the two cover bodies, a base is fixedly connected to the inner wall of the rear side of the mounting frame, the top of the base is fixedly connected to the bag sewing machine body, and an extrusion, folding and flattening mechanism for squeezing, folding and flattening the bag opening of the packaging bag is provided between the base and the mounting frame.

[0006] The present invention is further configured as follows: two fixing brackets are fixedly connected to the top inner wall of the mounting bracket, and two weighing sensors are respectively fixedly connected to the bottom inner walls of the corresponding fixing brackets.

[0007] By adopting the above technical solution, it is convenient to install and fix the weighing sensor.

[0008] The utility model is further configured as follows: the gate mechanism includes an upper cylinder fixedly connected to one side of the cover body, a baffle fixedly connected to the output shaft of the upper cylinder, the two baffles are slidably sleeved in the discharge pipe, the two baffles abut each other, rectangular openings are opened on both sides of the discharge pipe, the two baffles are slidably sleeved in the corresponding rectangular openings, the clamping mechanism includes an upper rack fixedly connected to the bottom of the baffle, a gear rotatably connected to the inner wall of the rear side of the cover body, and a lower rack slidably connected in the cover body, the lower rack and the upper rack are both meshed with the gear, the bottom of the lower rack is fixedly connected to a connecting frame, and one side of the connecting frame is fixedly connected to a splint for clamping the packaging bag.

[0009] By adopting the above technical solution, the solenoid valve is opened, and the grains in the hopper fall into the weighing hopper. The weighing hopper can be weighed through two weighing sensors. When the weight requirement of the bagged grains is reached, the weighing sensor sends a signal to the controller, and the controller closes the solenoid valve. When the weighing is completed, the packaging bag is put on the outside of the discharge pipe, and the two upper cylinders drive the two baffles to move away from each other without blocking the discharge pipe. At the same time, the outward movement of the baffle drives the outward movement of the upper rack, and the upper rack drives the outward rotation of the gear. The two gears drive the two lower racks and the connecting frame. The packaging bag is clamped and fixed by the inward movement of the splint, and there is no need for manual bagging. When the grains in the weighing hopper fall completely, the weighing sensor restores the original value. The weighing sensor sends a signal to the controller, and the controller reversely starts the two upper cylinders, so that the two baffles approach each other and abut, thereby blocking the discharge pipe and opening the solenoid valve at the same time to continue weighing the grains. At the same time, through the transmission of the gears, the inward movement of the two baffles will drive the two splints to move outward without clamping the packaging bag, and the grain can be bagged in the next bag.

[0010] The utility model is further configured as follows: a long hole is opened at the bottom of the cover body, and the two connecting frames are respectively slidably sleeved in the corresponding long holes.

[0011] By adopting the above technical solution, the connecting frame can be guided to make its movement more stable.

[0012] The utility model is further configured as follows: the ejection mechanism includes a lower cylinder fixedly connected to the bottom of the cover body, the output shafts of the two lower cylinders are fixedly connected to piston rods, the bottom ends of the two piston rods are fixedly connected to the same ejection frame, and the ejection frame is slidably sleeved on the outside of the discharge pipe.

[0013] By adopting the above technical solution, the lower cylinders are started forward and reversely. The two lower cylinders first drive the push-out frame to move downward to push the packaging bag downward to make it separate from the discharge pipe, so as to avoid the situation where the conveyor belt is stuck when transporting the packaging bag. Then the two lower cylinders drive the push-out frame to move upward and reset, waiting for the next packaging bag to be bagged with grains.

[0014] The utility model is further configured as follows: the extrusion, folding and flattening mechanism includes two transverse screw rods rotatably connected to the inner walls of the front and rear sides of the mounting frame and a servo motor fixedly connected to the front side of the mounting frame, the output shaft of the servo motor is fixedly connected to the front end of the corresponding transverse screw rod, the rear ends of the two transverse screw rods are fixedly connected to sprockets, the two sprockets are transmission-connected with the same chain, the outer sides of the two transverse screw rods are threadedly sleeved with a movable plate, the bottom of the movable plate is fixedly connected to a mounting block, and the side of the two mounting blocks close to each other is rotatably connected to a roller.

[0015] By adopting the above technical solution, the servo motor is started, and the two lateral screw rods are driven to rotate synchronously under the transmission of the two sprockets and the chain. The two lateral screw rods drive the two movable plates, the two mounting blocks and the roller to move backward. Under the backward movement of the roller and the restriction of the base, the bag openings on both sides of the packaging bag can be squeezed and fitted first. As the roller continues to move backward, the bag openings of the packaging bag can be folded backward to the top of the base. As the roller continues to move backward, the folded bag openings of the packaging bag are rolled and flattened, and then the bag openings on both sides of the packaging bag can be squeezed, fitted and flattened and laid on the base to avoid the bag openings from opening and wrinkles affecting the quality of the bag sewing. Then, the bag sewing operation is performed on the bag openings of the packaging bag through the bag sewing machine body.

[0016] The utility model is further configured as follows: two limit rods are fixedly connected to the front and rear inner walls of the mounting frame, and two movable plates are respectively slidably sleeved on the outer sides of the corresponding limit rods.

[0017] By adopting the above technical solution, the movable plate can be guided and limited, making its movement more stable.

[0018] The beneficial effects of the utility model are:

[0019] 1. The utility model puts the packaging bag on the outside of the discharge pipe, and drives the two baffles to move away from each other through the two upper cylinders without blocking the discharge pipe. At the same time, the outward movement of the baffle drives the outward movement of the upper rack, and the upper rack drives the outward rotation of the gear. The two gears drive the two lower racks, the connecting frame and the clamping plate to move inward to clamp and fix the packaging bag, and there is no need for manual bagging. When the grains in the weighing bucket fall completely, the two upper cylinders are started in the reverse direction, so that the two baffles are close to each other and abut against each other, thereby blocking the discharge pipe. At the same time, through the transmission of the gears, the inward movement of the two baffles will drive the two clamping plates to move outward without clamping the packaging bag, and the grain can be bagged in the next packaging bag.

[0020] 2. The utility model starts the lower cylinders forward and backward. The two lower cylinders first drive the push-out frame downward to push the packaging bag downward to make it separate from the discharge pipe, so as to avoid the situation where the conveyor belt is stuck when transporting the packaging bag. Then the two lower cylinders drive the push-out frame to move upward and reset, waiting for the next packaging bag to be bagged with grains.

[0021] 3. The utility model starts the servo motor, which drives the synchronous rotation of two transverse screws under the transmission of two sprockets and chains. The two transverse screws drive the two movable plates, two mounting blocks and the rearward movement of the roller. Under the rearward movement of the roller and the restriction of the base, the bag openings on both sides of the packaging bag can be squeezed and fitted first. As the roller continues to move backward, the bag openings of the packaging bag can be folded backward to the top of the base. As the roller continues to move backward, the folded bag openings of the packaging bag are rolled and flattened, and then the bag openings on both sides of the packaging bag can be squeezed and fitted and flattened on the base, so as to avoid the bag openings from opening and wrinkles that affect the quality of the sewn bag. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0023] Figure 1 This is a first-perspective stereoscopic diagram of a grain weighing, bagging and bag sewing machine proposed in the utility model;

[0024] Figure 2 This is a second perspective diagram of a grain weighing, bagging and bag sewing machine proposed in the utility model;

[0025] Figure 3 for Figure 2 Schematic diagram of the structure of part A;

[0026] Figure 4 This is a cross-sectional view of a grain weighing, bagging and bag sewing machine proposed in the utility model;

[0027] Figure 5 for Figure 4 Schematic diagram of the structure of part B;

[0028] Figure 6 This is a partial rear view of a grain weighing, bagging and bag sewing machine proposed in the utility model;

[0029] Figure 7 This is a three-dimensional diagram of the squeezing, folding and flattening mechanism of a grain weighing, bagging and sewing machine proposed in the utility model.

[0030] In the figure, 1. mounting frame; 2. conveyor belt; 3. servo motor; 4. weighing hopper; 5. hopper; 6. fixing frame; 7. cover; 8. upper cylinder; 9. connecting frame; 10. clamping plate; 11. weighing sensor; 12. discharge pipe; 13. lower cylinder; 14. ejection frame; 15. baffle; 16. upper rack; 17. lower rack; 18. long hole; 19. gear; 20. solenoid valve; 21. base; 22. bag sewing machine body; 23. limit rod; 24. moving plate; 25. mounting block; 26. transverse screw rod; 27. roller; 28. sprocket; 29. ​​chain. DETAILED DESCRIPTION

[0031] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0032] See also Figure 1 — Figure 7 The utility model provides a grain weighing, bagging and bag sewing machine, comprising a mounting frame 1, a conveyor belt 2 is provided in the mounting frame 1, a hopper 5 for adding grains is fixedly connected to the top of the mounting frame 1, a solenoid valve 20 is provided in the discharge port of the hopper 5, a weighing sensor 11 is fixedly connected to the inner wall of the top of the mounting frame 1, the tops of the two weighing sensors 11 are fixedly connected to the same weighing hopper 4, the bottom of the weighing hopper 4 is fixedly connected to a discharge pipe 12, both sides of the discharge pipe 12 are fixedly connected to a cover body 7, a gate mechanism is provided between the two cover bodies 7 and the discharge pipe 12, and the two cover bodies A clamping mechanism for clamping the packaging bag is provided between 7 and the discharge pipe 12, and a pushing mechanism for pushing the packaging bag downward is provided between the discharge pipe 12 and the two cover bodies 7. A base 21 is fixedly connected to the inner wall of the rear side of the mounting frame 1, and a bag sewing machine body 22 is fixedly connected to the top of the base 21. The bag sewing machine body 22 usually adopts the principle of a sewing machine to sew the bag opening with a needle and thread. This is a known prior art and is not described in detail in this article. An extrusion, folding and flattening mechanism for squeezing, folding and flattening the bag opening of the packaging bag is provided between the base 21 and the mounting frame 1.

[0033] Specifically, two fixing brackets 6 are fixedly connected to the top inner wall of the mounting bracket 1 , and two weighing sensors 11 are fixedly connected to the bottom inner walls of the corresponding fixing brackets 6 .

[0034] Specifically, the gate mechanism includes an upper cylinder 8 fixedly connected to one side of the cover body 7, and a baffle 15 is fixedly connected to the output shaft of the upper cylinder 8. The two baffles 15 are slidably sleeved in the discharge pipe 12, and the two baffles 15 abut against each other.

[0035] Specifically, rectangular openings are provided on both sides of the discharge pipe 12 , and two baffles 15 are slidably sleeved in the corresponding rectangular openings.

[0036] Specifically, in order to facilitate the automatic clamping and fixing of the packaging bags, the clamping mechanism includes an upper rack 16 fixedly connected to the bottom of the baffle 15, a gear 19 rotatably connected to the inner wall of the rear side of the cover body 7, and a lower rack 17 slidably connected to the cover body 7. The lower rack 17 and the upper rack 16 are both engaged with the gear 19. The bottom of the lower rack 17 is fixedly connected to the connecting frame 9, and one side of the connecting frame 9 is fixedly connected to a splint 10 for clamping the packaging bags.

[0037] Specifically, a long hole 18 is opened at the bottom of the cover body 7, and the two connecting frames 9 are slidably mounted in the corresponding long holes 18 respectively.

[0038] Specifically, in order to allow the packaging bag to move downward out of the discharge pipe 12 and avoid the situation where the conveyor belt 2 gets stuck when transporting the packaging bag, the ejection mechanism includes a lower cylinder 13 fixedly connected to the bottom of the cover body 7, and the output shafts of the two lower cylinders 13 are fixedly connected to piston rods, and the bottom ends of the two piston rods are fixedly connected to the same ejection frame 14.

[0039] Specifically, the ejection frame 14 is slidably sleeved on the outer side of the discharge pipe 12 .

[0040] Specifically, the extrusion, folding and flattening mechanism includes two transverse screw rods 26 rotatably connected to the inner walls of the front and rear sides of the mounting frame 1 and a servo motor 3 fixedly connected to the front side of the mounting frame 1. The output shaft of the servo motor 3 is fixedly connected to the front end of the corresponding transverse screw rod 26. The rear ends of the two transverse screw rods 26 are fixedly connected to sprockets 28. The two sprockets 28 are connected to the same chain 29 for transmission. The outer sides of the two transverse screw rods 26 are threaded with a movable plate 24. The bottom of the movable plate 24 is fixedly connected to a mounting block 25. The side of the two mounting blocks 25 close to each other is rotatably connected to a roller 27.

[0041] Specifically, two limiting rods 23 are fixedly connected to the front and rear inner walls of the mounting frame 1 , and two movable plates 24 are slidably sleeved on the outer sides of the corresponding limiting rods 23 .

[0042] When the present invention is in use, the solenoid valve 20 is opened, so that the grains in the hopper 5 fall into the weighing hopper 4, and the weighing hopper 4 can be weighed by the two weighing sensors 11. When the weight requirement of the bagged grains is reached, the weighing sensor 11 sends a signal to the controller (not shown in the figure), and the controller closes the solenoid valve 20. When the weighing is completed, the packaging bag is put on the outside of the discharge pipe 12 and abuts against the bottom of the push-out frame 14, and then the two upper cylinders 8 are started. The two upper cylinders 8 drive the two baffles 15 to move away from each other without blocking the discharge pipe 12. At the same time, the outward movement of the baffles 15 drives the outward movement of the upper rack 16, and the upper rack 16 drives the outward rotation of the gear 19. The two gears 19 drive the two lower racks 17, the connecting frame 9 and the clamping plate 10 to move inward to clamp and fix the packaging bag without manual operation. When the grains in the weighing hopper 4 fall completely, the weighing sensor 11 returns to its original value. At this time, the weighing sensor 11 sends a signal to the controller, and the controller reversely starts the two upper cylinders 8, so that the two baffles 15 are close to each other and abut against each other, thereby blocking the discharge pipe 12. At the same time, the solenoid valve 20 is opened, and the grain weighing operation can continue. At the same time, through the transmission of the gear 19, the two baffles 15 move inward and will drive the two splints 10 to move outward without clamping the packaging bag. Then the lower cylinder 13 is started forward and reverse. The two lower cylinders 13 first drive the push-out frame 14 to move downward and push the packaging bag downward to make it out of the discharge pipe 12, so as to avoid the situation where the conveyor belt 2 is stuck when transporting the packaging bag. Then the two lower cylinders 13 drive the push-out frame 14 to move upward and reset, waiting for the next packaging bag to be bagged.

[0043] The packaging bag filled with grains can be transported to the front side of the base 21 through the conveyor belt 2 and is located at the rear side of the roller 27. The servo motor 3 is started, and the two sprockets 28 and the chain 29 drive the synchronous rotation of the two transverse screw rods 26. The two transverse screw rods 26 drive the two movable plates 24, the two mounting blocks 25 and the roller 27 to move backward. Under the backward movement of the roller 27 and the restriction of the base 21, the two sides of the bag opening of the packaging bag can be squeezed and fitted first. As the roller 27 continues to move backward, the bag opening of the packaging bag can be folded backward to the top of the base 21. As the roller 27 continues to move backward, the folded bag opening of the packaging bag is rolled and flattened, and then the bag openings on both sides of the packaging bag can be squeezed and fitted and flattened and laid on the base to avoid the bag opening from opening and wrinkling, which affects the quality of the bag sewing. Then, the bag opening of the packaging bag is sewn by the bag sewing machine body 22 (the bag sewing machine body 22 usually adopts the principle of a sewing machine to sew the bag opening together with a needle and thread).

Claims

1. A grain weighing, bagging and bag sewing machine, characterized in that: The invention comprises a mounting frame (1), wherein a conveyor belt (2) is arranged in the mounting frame (1), a hopper (5) for adding grains is fixedly connected to the top of the mounting frame (1), a solenoid valve (20) is arranged in the discharge port of the hopper (5), a weighing sensor (11) is fixedly connected to the inner wall of the top of the mounting frame (1), the tops of two weighing sensors (11) are fixedly connected to the same weighing hopper (4), the bottom of the weighing hopper (4) is fixedly connected to a discharge pipe (12), both sides of the discharge pipe (12) are fixedly connected to a cover body (7), and the two covers (7) are fixedly connected to the top of the weighing hopper (4). A gate mechanism is provided between the discharging pipe (12), a clamping mechanism for clamping the packaging bag is provided between the two covers (7) and the discharging pipe (12), a pushing mechanism for pushing the packaging bag downward is provided between the discharging pipe (12) and the two covers (7), a base (21) is fixedly connected to the inner wall of the rear side of the mounting frame (1), a bag sewing machine body (22) is fixedly connected to the top of the base (21), and an extrusion, folding and flattening mechanism for extruding, folding and flattening the bag opening of the packaging bag is provided between the base (21) and the mounting frame (1).

2. A grain weighing, bagging and bag sewing machine according to claim 1, characterized in that: Two fixing frames (6) are fixedly connected to the top inner wall of the mounting frame (1), and two weighing sensors (11) are respectively fixedly connected to the bottom inner walls of the corresponding fixing frames (6).

3. The grain weighing, bagging and bag sewing machine according to claim 1, characterized in that: The gate mechanism comprises an upper cylinder (8) fixedly connected to one side of the cover body (7); a baffle (15) is fixedly connected to the output shaft of the upper cylinder (8); the two baffles (15) are both slidably sleeved in the discharge pipe (12), and the two baffles (15) abut against each other.

4. A grain weighing, bagging and bag sewing machine according to claim 3, characterized in that: Rectangular openings are provided on both sides of the discharge pipe (12), and two baffles (15) are respectively slidably sleeved in the corresponding rectangular openings.

5. The grain weighing, bagging and bag sewing machine according to claim 3, characterized in that: The clamping mechanism comprises an upper rack (16) fixedly connected to the bottom of the baffle (15), a gear (19) rotatably connected to the inner wall of the rear side of the cover body (7), and a lower rack (17) slidably connected to the cover body (7), the lower rack (17) and the upper rack (16) are both engaged with the gear (19), the bottom of the lower rack (17) is fixedly connected to a connecting frame (9), and one side of the connecting frame (9) is fixedly connected to a clamping plate (10) for clamping the packaging bag.

6. A grain weighing, bagging and bag sewing machine according to claim 5, characterized in that: The bottom of the cover body (7) is provided with an elongated hole (18), and the two connecting frames (9) are respectively slidably sleeved in the corresponding elongated holes (18).

7. The grain weighing, bagging and bag sewing machine according to claim 1, characterized in that: The ejection mechanism comprises a lower cylinder (13) fixedly connected to the bottom of the cover body (7), the output shafts of the two lower cylinders (13) are fixedly connected to piston rods, and the bottom ends of the two piston rods are fixedly connected to the same ejection frame (14).

8. The grain weighing, bagging and bag sewing machine according to claim 7, characterized in that: The ejection frame (14) is slidably sleeved on the outer side of the discharge pipe (12).

9. The grain weighing, bagging and bag sewing machine according to claim 1, characterized in that: The extrusion, folding and flattening mechanism comprises two transverse screw rods (26) rotatably connected to the inner walls of the front and rear sides of the mounting frame (1) and a servo motor (3) fixedly connected to the front side of the mounting frame (1); the output shaft of the servo motor (3) is fixedly connected to the front end of the corresponding transverse screw rod (26); the rear ends of the two transverse screw rods (26) are fixedly connected to sprockets (28); the two sprockets (28) are connected to the same chain (29); the outer sides of the two transverse screw rods (26) are threadedly sleeved with a movable plate (24); the bottom of the movable plate (24) is fixedly connected to a mounting block (25); and the sides of the two mounting blocks (25) close to each other are rotatably connected to a roller (27).

10. The grain weighing, bagging and bag sewing machine according to claim 9, characterized in that: Two limiting rods (23) are fixedly connected to the front and rear inner walls of the mounting frame (1), and two movable plates (24) are respectively slidably sleeved on the outer sides of the corresponding limiting rods (23).

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