Weighing packaging machine with high-precision powder amount control function

Abstract

The utility model relates to the technical field of packaging machines, in particular to a weighing packaging machine with a high-precision powder amount control function, which comprises a base, one side of the top of the base is connected with a material tank through a rack, a rotating shaft is rotatably connected in the material tank, the top of the rotating shaft is connected with a driving motor, and the driving motor is fixed at the top of the material tank. A spiral blade is installed on the side face, close to the lower end, of the rotating shaft, the edge of the spiral blade is in clearance fit with the inner wall of the material tank, and a fixing frame is arranged at the bottom of the material tank and arranged outside the material tank in a sleeving mode. The movable frame and the fixed frame can be connected together through the connecting rods, and the movable frame is limited, so that when powder is packaged, under the gravity effect of the powder, the pressing block on the top of each connecting rod synchronously applies pressure to the corresponding weighing sensor, weighing is accurate, and the using effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packaging machines, in particular to a weighing packaging machine with a high-precision powder quantity control function. Background Art

[0002] Powder packaging machine is a special equipment necessary for the production of bagged cement, dry mortar, putty powder and other powdered materials. It is used to complete the automatic packaging of cement, dry mortar, putty powder and other powdered materials with good flowability.

[0003] When packaging, the existing powder packaging machine generally needs to clamp and fix the opening of the packaging bag through a clamping mechanism, and then convey the powder into the packaging bag through the feeding mechanism. However, since the clamping mechanism and the feeding mechanism will generate friction with the packaging bag, and the weighing mechanism generally has only one weighing sensor, the weighing is not accurate enough, there will be a large error, and the packaging effect is poor. In addition, after weighing, the powder will be conveyed to the sealing machine through a conveyor belt for sealing. However, since there is no mechanism to limit the opening of the packaging bag, the opening of the packaging bag is easily bent by gravity during sealing, affecting the sealing. To this end, we propose a weighing packaging machine with high-precision powder quantity control function. Utility Model Content

[0004] The purpose of the utility model is to solve the above-mentioned shortcomings in the prior art and to propose a weighing packaging machine with a high-precision powder quantity control function.

[0005] In order to achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a weighing packaging machine with a high-precision powder quantity control function is designed, including a base, a top side of the base is connected to a material tank through a frame, a rotating shaft is rotatably connected inside the material tank, a driving motor is connected to the top of the rotating shaft, the driving motor is fixed to the top of the material tank, and the bottom of the rotating shaft extends into the discharge pipe of the material tank, a spiral blade is installed on the side of the rotating shaft close to the lower end, and the edge of the spiral blade is in clearance with the inner wall of the material tank;

[0006] A fixed frame is provided at the bottom of the material tank, and the fixed frame is sleeved on the outside of the material tank, and the top of the fixed frame is fixed to the bottom of the frame through a fixed plate, and a movable frame is provided below the fixed frame, and connecting rods are vertically installed at the four corners of the top of the movable frame, and the top of the connecting rod slides through the fixed frame, and a pressure block is installed on one side of the top of the connecting rod, and a plurality of weighing sensors are installed on the top edge of the fixed frame, and the weighing sensors are located below the corresponding pressure blocks, and the top of the weighing sensor 1 is in contact with the bottom of the pressure block;

[0007] Two clamping plates are symmetrically arranged at the bottom of the movable frame, and the two ends of one of the clamping plates are fixed to the bottom of the movable frame through the second fixing rod, and the two ends of the other clamping plate are rotatably connected to the bottom of the movable frame through the first fixing rod, and a telescopic mechanism is installed on the side of each second fixing rod, and one end of the telescopic mechanism is rotatably connected to the side of the second fixing rod;

[0008] A belt conveyor is installed at the bottom of the base, and a sealing machine is installed on the top side of the base. Several pairs of brackets are installed on both sides of the belt conveyor. The brackets are located between the sealing machine and the material tank. The brackets are arranged in an "L" shape, and the proximal ends of each pair of brackets extend above the belt conveyor. A through groove is opened on the top of each bracket, and a connecting block is provided inside each through groove. The bottom of the connecting block is rotatably connected to a limiting wheel, and one side of the limiting wheel extends to the outside of the bracket.

[0009] Preferably, the adjacent sides of the two clamps are provided with open grooves, and when the side surfaces of the two clamps are against each other, a circular cavity is formed between the two open grooves, and the discharge pipe at the bottom of the material tank passes through the circular cavity.

[0010] Preferably, a spiral guide strip is installed on the side of each limiting wheel.

[0011] Preferably, a guide rod is provided inside the through slot, the guide rod slides through the corresponding connecting block, and both ends of the guide rod are fixed at the ends of the through slot.

[0012] Preferably, a spring is installed at one end of each guide rod, one end of the spring is fixed to the end of the through slot, and the other end of the spring is fixed to one side of the connecting block.

[0013] Preferably, an electric control valve is installed on the bottom side of the discharge pipe.

[0014] Preferably, a screw feeder is installed on one side of the base, and the discharge port of the screw feeder is connected to the side of the material tank.

[0015] Preferably, a control cabinet is installed on one side of the top of the base through a fixing frame, and a controller in the control cabinet is respectively connected to the driving motor, the telescopic mechanism and the weighing sensor through wires.

[0016] The design scheme proposed by the utility model has the following beneficial effects during application:

[0017] 1. The movable frame can be connected to the fixed frame through multiple connecting rods, and the movable frame can be limited, so that when the powder is packaged, under the action of the gravity of the powder, the pressure block on the top of each connecting rod will simultaneously apply pressure to the corresponding weighing sensor, so that the weighing is accurate and the use effect is improved.

[0018] 2. The limiting wheel can be used to limit the opening of the packaging bag after the powder is packaged to prevent the opening of the packaging bag from bending under the action of gravity and improve the sealing effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the structure of the utility model;

[0020] Figure 2 This is a schematic diagram of the support structure of the utility model;

[0021] Figure 3 It is a schematic diagram of the fixed frame and the movable frame structure of the utility model;

[0022] Figure 4 This is a side sectional view of the material tank structure of the utility model;

[0023] Figure 5 It is a side view of the support and sealing machine structure of the utility model.

[0024] In the figure: 1. base; 2. frame; 3. screw feeder; 4. drive motor; 5. material tank; 6. sealing machine; 7. bracket; 8. limit wheel; 9. pressure block; 10. fixed frame; 11. telescopic mechanism; 12. clamping plate; 13. belt conveyor; 14. spring; 15. through groove; 16. connecting block; 17. guide rod; 18. spiral guide strip; 19. weighing sensor; 20. first fixed rod; 21. second fixed rod; 22. movable frame; 23. connecting rod; 24. rotating shaft; 25. spiral blade; 26. control cabinet; 27. opening groove; 28. electric control valve; 29. ​​discharge pipe. DETAILED DESCRIPTION

[0025] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0026] Reference Figure 1-Figure 5 A weighing and packaging machine with high-precision powder quantity control function includes a base 1, a control cabinet 26 is installed on one side of the base 1 through a fixing frame, and a controller is arranged in the control cabinet 26, which is a control mainboard or a PLC logic controller.

[0027] A material tank 5 is connected to one side of the top of the base 1 through a frame 2, and a rotating shaft 24 is rotatably connected inside the material tank 5. A driving motor 4 is connected to the top of the rotating shaft 24, and the driving motor 4 is connected to the controller through a wire. The driving motor 4 is fixed to the top of the material tank 5, and the bottom of the rotating shaft 24 extends into a discharge pipe 29 of the material tank 5. A spiral blade 25 is installed on the side of the rotating shaft 24 near the lower end, and the edge of the spiral blade 25 is in clearance with the inner wall of the material tank 5. In actual use, the driving motor 4 can be controlled to rotate by the controller, and the driving motor 4 drives the spiral blade 25 to rotate through the rotating shaft 24 to discharge the powder in the material tank 5 from the discharge pipe 29.

[0028] It should be noted that an electric control valve 28 is installed on the material processing port at the bottom of the material tank 5. The electric control valve 28 is connected to the controller through a wire. The controller can control the opening and closing of the discharge pipe 29 through the electric control valve 28.

[0029] like Figure 1 and Figure 3 As shown, a fixed frame 10 is provided at the bottom of the material tank 5, and the fixed frame 10 is sleeved on the outside of the material tank 5, and the top of the fixed frame 10 is fixed to the bottom of the frame 2 through a fixed plate, and a movable frame 22 is provided below the fixed frame 10, and connecting rods 23 are vertically installed at the four corners of the top of the movable frame 22, and the top of the connecting rod 23 slides through the fixed frame 10, and a pressing block 9 is installed on one side of the top of the connecting rod 23, and two clamping plates 12 are symmetrically provided at the bottom of the movable frame 22, and the two ends of one of the clamping plates 12 are fixed to the bottom of the movable frame 22 through a second fixing rod 21, and the two ends of the other clamping plate 12 are passed through The first fixed rod 20 is rotatably connected to the bottom of the movable frame 22, and a telescopic mechanism 11 is installed on the side of each second fixed rod 21. One end of the telescopic mechanism 11 is rotatably connected to the side of the second fixed rod 21. The telescopic mechanism 11 is an electric push rod or a hydraulic rod, and the telescopic mechanism 11 is connected to the controller through a wire. In actual use, the staff can put the packaging bag on the discharge pipe 29, and then control the telescopic mechanism 11 to extend through the controller. The telescopic mechanism 11 drives one of the clamps 12 to move, clamp the packaging bag and fix it on the discharge pipe 29, thereby completing the fixation of the packaging bag.

[0030] It should be noted that if Figure 3 As shown, the two clamping plates 12 are provided with open grooves 27 on their adjacent sides. When the sides of the two clamping plates 12 are against each other, a circular cavity is formed between the two open grooves 27. A discharge pipe 29 at the bottom of the material tank 5 passes through the circular cavity. The circular cavity is used to accommodate the discharge pipe 29, and there is a gap between the discharge pipe 29 and the inner wall of the packaging bag, so that the discharge pipe 29 will not hinder the clamping and fixing of the packaging bag by the clamping plates 12, and there will not be a large friction between the discharge pipe 29 and the packaging bag, so that it will not have a large impact on the weighing result.

[0031] like Figure 3 As shown, a plurality of weighing sensors 19 are installed on the top edge of the fixed frame 10. The weighing sensors 19 are located below the corresponding pressing blocks 9, and the top of the weighing sensors 19 is in contact with the bottom of the pressing blocks 9. In actual use, the weighing sensors 19 are connected to the controller through wires. In actual use, when the powder is discharged from the discharge pipe 29 into the packaging bag, the splint 12 moves downward due to the gravity of the powder, so that the pressing blocks 9 apply pressure to the weighing sensors 19. The weighing sensors 19 transmit the detected data to the controller. When the specified weight is reached, the controller turns off the drive motor 4 and the electric control valve 28 to stop discharging, and the discharge amount is precisely controlled.

[0032] like Figure 1 As shown, a belt conveyor 13 is installed at the bottom of the base 1. In actual use, when the powder in the packaging bag reaches a preset weight, the controller can control the telescopic mechanism 11 to extend so that the two clamping plates 12 are separated, and the packaging bag falls on the belt conveyor 13 under the action of gravity and is transported by the belt conveyor 13.

[0033] like Figure 1 As shown, a sealing machine 6 is installed on the supporting side of the base 1, and the weighed packaging bags will be moved to the sealing machine 6 for sealing under the conveyance of the belt conveyor 13.

[0034] like Figure 1 and Figure 2 As shown, a plurality of pairs of brackets 7 are installed on both sides of the belt conveyor 13, and the brackets 7 are located between the sealing machine 6 and the material tank 5. The brackets 7 are arranged in an "L" shape, and the proximal ends of each pair of brackets 7 extend above the belt conveyor 13, and a through slot 15 is opened on the top of each bracket 7, and a connecting block 16 is arranged inside each through slot 15, and a guide rod 17 is arranged inside the through slot 15, and the guide rod 17 slides through the corresponding connecting block 16, and the two ends of the guide rod 17 are fixed to the ends of the through slot 15, and the connecting block 16 can be limited under the action of the guide rod 17, and the connecting block 16 will not fall off from the through slot 15.

[0035] like Figure 2 and Figure 5 As shown, the bottom of the connecting block 16 is rotatably connected to the limiting wheel 8, and one side of the limiting wheel 8 extends to the outside of the bracket 7. During the transportation of the packaging bag, the top of the packaging bag moves between the two limiting wheels 8. The top of the packaging bag can be limited by the limiting wheel 8 to prevent the top of the packaging bag from bending and affecting the subsequent sealing process.

[0036] It should be noted that if Figure 2As shown, a spring 14 is installed at one end of each guide rod 17, one end of the spring 14 is fixed to the end of the through slot 15, and the other end of the spring 14 is fixed to one side of the connecting block 16. In actual use, the elastic force of the spring 14 can make the adjacent sides of each pair of limiting wheels 8 connect with the opening of the packaging bag, thereby limiting the opening of the packaging bag.

[0037] Specifically, during the actual use of the present invention, the staff puts the packaging bag on the discharge pipe 29, and then controls the telescopic mechanism 11 to work through the controller. The telescopic mechanism 11 contracts and drives one of the clamps 12 to move, so that the two clamps 12 side surfaces are abutted against each other, clamping and fixing the packaging bag. Then the controller controls the electric control valve 28 to open, and at the same time controls the drive motor 4 to work. The drive motor 4 drives the spiral blade 25 to rotate, and discharges the powder in the material tank 5 from the discharge pipe 29 to the packaging bag. During the discharge process, the gravity of the powder is transmitted to the clamp 12 through the packaging bag, so that the movable frame 22 moves downward, and the movable frame 22 drives the connecting rod 23 to move downward, so that the pressing block 9 is pressed against the packing bag. The weighing sensor 19 applies pressure, and the weighing sensor 19 transmits the detected data to the controller. When the powder in the packaging bag reaches the preset value, the controller turns off the drive motor 4 and the electric control valve 28, stops unloading, and simultaneously controls the telescopic mechanism 11 to extend, so that the two clamping plates 12 are separated. The packaging bag falls on the belt conveyor 13 under the action of gravity, and is transported to the sealing machine 6 through the belt conveyor 13. During the transportation process, the adjacent sides of each pair of limiting wheels 8 will contact the two sides of the packaging bag opening to limit the packaging bag opening to prevent the packaging bag opening from being bent due to the influence of gravity. Under the action of the limiting wheels 8, the packaging bag opening is moved into the sealing machine 6 for sealing to complete the packaging.

[0038] Furthermore, if Figure 2 As shown, a spiral guide bar 18 is installed on the side of each limiting wheel 8. When the limiting wheel 8 limits the packaging bag, the movement of the packaging bag will drive the limiting wheel 8 to rotate. In this way, when the spiral guide bar 18 rotates, it will apply an upward force to the opening of the packaging bag, making the opening of the packaging bag flat and improving the sealing effect.

[0039] Furthermore, if Figure 1 As shown, a screw feeder 3 is installed on one side of the base 1, and the discharge port of the screw feeder 3 is connected to the side of the material tank 5. The staff can convey the powder into the material tank 5 through the screw feeder 3, and the feeding is convenient.

[0040] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be included in the protection scope of the present invention.

Claims

1. A weighing and packaging machine with high-precision powder quantity control function, comprising a base (1), characterized in that: A material tank (5) is connected to one side of the top of the base (1) through a frame (2), a rotating shaft (24) is rotatably connected inside the material tank (5), a driving motor (4) is connected to the top of the rotating shaft (24), the driving motor (4) is fixed to the top of the material tank (5), and the bottom of the rotating shaft (24) extends into a discharge pipe (29) of the material tank (5), a spiral blade (25) is installed on the side of the rotating shaft (24) close to the lower end, and the edge of the spiral blade (25) is in clearance with the inner wall of the material tank (5); A fixed frame (10) is provided at the bottom of the material tank (5), the fixed frame (10) is sleeved on the outside of the material tank (5), and the top of the fixed frame (10) is fixed to the bottom of the frame (2) through a fixed plate, and a movable frame (22) is provided below the fixed frame (10), and connecting rods (23) are vertically installed at the four corners of the top of the movable frame (22), the top of the connecting rod (23) slides through the fixed frame (10), and a pressure block (9) is installed on one side of the top of the connecting rod (23), and a plurality of weighing sensors (19) are installed on the top edge of the fixed frame (10), and the weighing sensors (19) are located below the corresponding pressure blocks (9), and the top of the weighing sensors (19) is in contact with the bottom of the pressure blocks (9); Two clamping plates (12) are symmetrically arranged at the bottom of the movable frame (22), and the two ends of one of the clamping plates (12) are fixed to the bottom of the movable frame (22) through a second fixing rod (21), and the two ends of the other clamping plate (12) are rotatably connected to the bottom of the movable frame (22) through a first fixing rod (20), and a telescopic mechanism (11) is installed on the side of each second fixing rod (21), and one end of the telescopic mechanism (11) is rotatably connected to the side of the second fixing rod (21); A belt conveyor (13) is installed at the bottom of the base (1), a sealing machine (6) is installed on the upper side of the base (1), and a plurality of pairs of brackets (7) are installed on both sides of the belt conveyor (13). The brackets (7) are located between the sealing machine (6) and the material tank (5). The brackets (7) are arranged in an "L" shape, and the adjacent ends of each pair of brackets (7) extend above the belt conveyor (13). A through groove (15) is opened at the top of each bracket (7), and a connecting block (16) is provided inside each through groove (15). The bottom of the connecting block (16) is rotatably connected to a limiting wheel (8), and one side of the limiting wheel (8) extends to the outside of the bracket (7).

2. The weighing packaging machine with high-precision powder quantity control function according to claim 1, characterized in that: The adjacent sides of the two clamping plates (12) are both provided with open grooves (27). When the sides of the two clamping plates (12) are butted against each other, a circular cavity is formed between the two open grooves (27), and a discharge pipe (29) at the bottom of the material tank (5) passes through the circular cavity.

3. The weighing packaging machine with high-precision powder quantity control function according to claim 1, characterized in that: A spiral guide strip (18) is installed on the side of each limiting wheel (8).

4. The weighing packaging machine with high-precision powder quantity control function according to claim 1, characterized in that: A guide rod (17) is provided inside the through slot (15). The guide rod (17) slides through the corresponding connecting block (16), and both ends of the guide rod (17) are fixed to the ends of the through slot (15).

5. The weighing packaging machine with high-precision powder quantity control function according to claim 4, characterized in that: A spring (14) is installed at one end of each guide rod (17), one end of the spring (14) is fixed to the end of the through slot (15), and the other end of the spring (14) is fixed to one side of the connecting block (16).

6. The weighing packaging machine with high-precision powder quantity control function according to claim 1, characterized in that: An electric control valve (28) is installed on the side of the bottom of the discharge pipe (29).

7. The weighing packaging machine with high-precision powder quantity control function according to claim 1, characterized in that: A screw feeder (3) is installed on one side of the base (1), and a discharge port of the screw feeder (3) is connected to the side of the material tank (5).

8. The weighing packaging machine with high-precision powder quantity control function according to claim 1, characterized in that: A control cabinet (26) is installed on one side of the top of the base (1) via a fixing frame, and a controller in the control cabinet (26) is respectively connected to the drive motor (4), the telescopic mechanism (11) and the weighing sensor (19) via wires.

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