A powder material packaging machine

Abstract

The present invention relates to a powder material packaging machine, comprising a frame, a bag holding and conveying device being provided at the front end of the frame, a weighing sensor being provided on the frame, the weighing sensor being connected to the bag holding and conveying device, a filling device being provided at the rear end of the frame, the filling device being provided with a feed port and a discharge port, the feed port being connected to a silo for storing materials, the bag holding and conveying device being provided with a feeding nozzle, the rear end of the feeding nozzle being connected to the discharge port, the filling device comprising an impeller box, the feed port being arranged at the top of the impeller box, the discharge port being arranged at the side wall of the bottom surface of the impeller box, an impeller being provided at the inner bottom surface of the impeller box, a drive shaft being provided at the bottom of the impeller, the bottom end of the drive shaft extending out of the impeller box and connected to a drive mechanism, at least one air inlet being further provided on the side wall of the impeller box, the outer end of the air inlet being connected to a compressed air source, a control valve being provided between the discharge port and the feeding nozzle, the control valve being connected to the weighing sensor through a controller; the present invention can still maintain good weight accuracy when filling powder materials at high speed.

Description

Technical Field

[0001] The invention relates to the technical field of powdery material filling, in particular to a powdery material packaging machine. Background Art

[0002] Powdered materials such as cement and flour need to be packaged in bags in the final production process. Generally, the materials are filled into the bags. However, different materials have different fluidity. Some loose powdered materials have poor fluidity and are prone to bridging and clogging during filling, resulting in low packaging efficiency and poor weight accuracy of each bag. Chinese patent CN109367905A discloses "an automatic lifting device for cement packaging machine". It works by hanging the bag on the feeding nozzle for filling. When the set weight is reached, the filling stops, and then the tipping device flips the bag filled with cement forward to make it fall to the conveyor chain below. The conveyor chain then transfers it to the subsequent processing process; this operation method has the following problems: 1. The posture and position of the overturned packaging bags at the upper end of the conveyor chain are not fixed, some are vertical, and some are horizontal, which is not conducive to the positioning of the automated equipment in the subsequent process. Manual assistance is often required to correct the posture and position, which increases labor costs; 2. The top seal of the packaging bag after this process is not tight, which is generally a pre-sealing process. The overturning action can easily cause some materials to splash out of the seal and cause pollution to the environment, and the subsequent ultrasonic sealing process cannot normally handle and seal the inverted packaging bags, which are usually also corrected with manual assistance. Summary of the Invention

[0003] The purpose of the present invention is to solve the problems existing in the above-mentioned prior art and provide a powder material packaging machine to improve the filling speed and packaging weight accuracy. After filling, the packaging bag is placed on the conveyor chain in a unique posture.

[0004] The specific solution of the present invention is: a powder material packaging machine, including a frame, a bag holding and conveying device is installed at the front end of the frame, a weighing sensor is provided on the frame, the weighing sensor is connected to the bag holding and conveying device, and a filling device is installed at the rear end of the frame, the filling device is provided with a feed port and a discharge port, the feed port is connected to a silo for storing materials, the bag holding and conveying device is provided with a feeding nozzle, the rear end of the feeding nozzle is connected to the discharge port, the filling device includes an impeller box, the feed port is arranged at the top of the impeller box, the discharge port is arranged at the side wall of the bottom surface of the impeller box, an impeller is installed on the bottom surface of the impeller box, a drive shaft is installed at the bottom of the impeller, the bottom end of the drive shaft extends out of the impeller box to connect to the drive mechanism, and the side wall of the impeller box is also provided with at least one air inlet, the outer end of the air inlet is connected to a compressed air source, a control valve is installed between the discharge port and the feeding nozzle, and the control valve is connected to the weighing sensor through a controller.

[0005] The control valve described in the present invention includes a fixed bracket, a hose is installed in the fixed bracket, the hose passes through the front and rear ends of the fixed bracket, one end of the hose is connected to the discharge port, a support plate is provided at each end of the left and right ends of the fixed bracket, each support plate is provided with a connecting shaft, a vertical clamping rod is provided at the inner end of the connecting shaft, and the outer end of the connecting shaft is connected to the actuator. The actuator is actuated to move the two clamping rods toward the middle to clamp the hose to achieve material interception.

[0006] A guide bracket is arranged between the two support plates of the present invention. A guide groove is arranged in the guide bracket. One end of the clamping rod is positioned in the guide groove.

[0007] The actuator of the present invention adopts a cylinder.

[0008] The hose of the present invention adopts a silicone sleeve.

[0009] The impeller of the present invention comprises a chassis, which is fixedly connected to the driving shaft, and a plurality of blades are evenly distributed on the top of the chassis.

[0010] The bag holding and conveying device described in the present invention includes a support frame, the top of the support frame is provided with the feeding nozzle, the support frame is provided with a bag pressing mechanism above the feeding nozzle, and a bag holding frame is provided below the feeding nozzle, two sets of connecting rod mechanisms are symmetrically provided on both sides of the support frame, the connecting rod mechanisms are connected to the bag holding frame, a horizontal push drive mechanism is installed on the support frame, the output end of the horizontal push drive mechanism is connected to the bag holding frame, a saddle is installed at the lower end of the bag holding frame, the saddle is used to support the bottom of the packaging bag, the inner end of the saddle is hinged to the bag holding frame, and a flipping drive mechanism is installed on the bag holding frame, which is connected to the saddle; when unloading, the horizontal push drive mechanism first pushes the bag holding frame outward to separate from the feeding nozzle, and then the flipping drive mechanism drives the saddle to flip downward by a certain angle so that the packaging bag falls vertically onto the conveying device below.

[0011] The connecting rod mechanism described in the present invention includes two support plates A and two support plates B. The support plates A are symmetrically arranged on both sides of the upper end of the bag holding frame, and the support plates B are symmetrically arranged at the lower end of the support frame. A connecting rod A is hinged between the inner end of the support plate A and the bottom of the support frame, and a connecting rod B is hinged between the outer end of the support plate A and the outer end of the support plate B. The support plates A, support plates B, connecting rod A, and connecting rod B constitute a four-bar linkage mechanism.

[0012] The weighing sensor described in the present invention is installed on the top of the frame. The weighing sensor is connected to the support frame through a pull rod. A set of connecting components are installed at the top and four corners of the bottom of the support frame. The connecting components include a fixed block A and a fixed block B. The fixed block A is fixedly connected to the support frame, and the fixed block B is fixedly connected to the frame. The fixed block A and the fixed block B are connected by a spring plate.

[0013] The bag holding rack of the present invention is provided with a mounting groove arranged in a vertical direction, a mounting plate is installed in the mounting groove, two bearing seats are provided at the front end of the mounting plate, a rotating shaft is installed in the two bearing seats, the inner end of the saddle is fixedly connected to the rotating shaft, and the height of the mounting plate can be adjusted up and down in the mounting groove.

[0014] The bag holding rack of the present invention is also provided with a give way groove, which is parallel to the mounting groove. The flipping drive mechanism includes a motor, which is installed at the rear end of the mounting seat. The output shaft of the motor is equipped with a rocker A, and one end of the rotating shaft is equipped with a rocker B. The inner end of the rocker B passes through the give way groove and is hinged to a connecting rod, and the bottom end of the connecting rod is hinged to the rocker A.

[0015] The bag pressing mechanism of the present invention comprises a bracket arranged on the top of the support frame, a cylinder is installed on the bracket, a piston rod of the cylinder is vertically downward and is equipped with a pressing block, and the pressing block is directly facing the feeding nozzle.

[0016] The support frame of the present invention is provided with a U-shaped lever below the feeding nozzle, both ends of the lever are rotatably connected to the support frame, one end of the lever is provided with a signal plate, and a proximity switch is provided on the support frame corresponding to the signal plate.

[0017] The working principle of the present invention is as follows: the feed port of the impeller box is connected to the silo for storing materials, and a discharge valve is arranged in the middle. During filling, the top of the packaging bag is hung on the feed nozzle, the packaging bag is pressed by the bag pressing mechanism, and the bottom of the packaging bag is supported by the saddle. The material enters the impeller box and is mixed with the compressed gas, and then is hit into the feed nozzle by the high-speed rotating impeller, and then falls into the packaging bag. The weight increases continuously during the filling process. When the weighing sensor senses that the weight of the material in the packaging bag reaches the set value, the controller closes the control valve and the discharge valve to stop discharging, the bag pressing mechanism retracts, and the push drive mechanism pushes the bag support frame outward to separate the packaging bag from the feed nozzle, and then the flip drive mechanism flips the saddle downward. The packaging bag falls vertically onto the conveying mechanism under the action of its own weight.

[0018] Compared with the prior art, the present invention has the following advantages: 1. The impeller box has a larger feeding area and a larger discharging area. The material is mixed with the compressed gas and then punched out by the high-speed rotating impeller, which improves the filling speed and does not cause bridging or clogging of the material; 2. By setting the filling weighing mechanism and the control valve electronic control feedback, when the weight in the packaging bag is about to reach the weight value, the control valve can be activated by a single-side cylinder to reduce the cross-sectional area of the silicone sleeve by half, thereby reducing the flow rate of the material, and the valve is closed when the weight is reached, which can ensure weight accuracy under the premise of high-speed filling; 3. Through horizontal pushing and vertical falling, each bag is ensured to be on the conveyor chain in the same posture and position, which is convenient for automatic positioning of the subsequent process, without the need for manual auxiliary correction, saving labor costs; 4. It is convenient for the ultrasonic sealing device to perform automatic sealing operation, and the material in the bag will not splash out from the seal before operation, avoiding pollution to the environment; 5. The saddle position can be adjusted up and down to adapt to packaging bags of different sizes. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 is a stereoscopic view a of the present invention;

[0020] Figure 2 FIG. b is a perspective view of the present invention without the front cover;

[0021] Figure 3 It is a front view of the present invention;

[0022] Figure 4 is a front view of the filling device of the present invention;

[0023] Figure 5 yes Figure 4 AA view;

[0024] Figure 6 yes Figure 5 A top view of

[0025] Figure 7 yes Figure 4 BB view;

[0026] Figure 8 is a three-dimensional view of the control valve of the present invention;

[0027] Figure 9 FIG. 1 is a perspective view of a bag-carrying and conveying device according to the present invention;

[0028] Figure 10 is a three-dimensional view b of the bag-carrying and conveying device of the present invention;

[0029] Figure 11 This is a front view of the bag-carrying and conveying device of the present invention;

[0030] Figure 12 yes Figure 11 Left view of;

[0031] Figure 13 yes Figure 12 AA view;

[0032] In the figure: 1-frame, 2-controller, 3-filling device, 301-impeller box, 302-drive shaft, 303-drive mechanism, 304-air inlet, 305-feed port, 306-discharge port, 307-control valve, 371-fixed bracket, 372-guide bracket, 373-support plate, 374-clamping rod, 375-cylinder, 376-silicone sleeve, 377-vent, 308-impeller, 381-chassis, 382-blade, 4-front cover, 5-limit block, 6-transverse support rod, 7-longitudinal support rod, 8-bag conveying device, 801-support frame, 802- Cylinder, 803-feeding nozzle, 804-shift rod, 805-signal board, 806-proximity switch, 807-bag holder, 808-mounting slot, 809-support plate A, 810-connecting rod B, 811-connecting rod A, 812-mounting plate, 813-saddle, 814-rotating shaft, 815-support plate B, 816-cylinder, 817-motor, 818-yield slot, 819-rocker A, 820-connecting rod, 821-rocker B, 822-fixed block A, 823-fixed block B, 824-spring plate, 9-dust collection pipe, 10-pull rod, 11-weighing sensor, 12-packaging bag. DETAILED DESCRIPTION

[0033] See also Figure 1-8 , this embodiment includes a frame 1, a bag-carrying and conveying device 8 is installed at the front end of the frame 1, a weighing sensor 11 is provided on the frame 1, the weighing sensor 11 is connected to the bag-carrying and conveying device 8, a filling device 3 is installed at the rear end of the frame 1, the filling device 3 is provided with a feed port 305 and a discharge port 306, the feed port 305 is connected to the silo for storing materials, the bag-carrying and conveying device 8 is provided with a feeding nozzle 803, a front cover 4 is provided on the frame 1 above the feeding nozzle 803, the frame 1 is provided with a dust collecting pipe 9 behind the bag-carrying and conveying device 8, the top of the dust collecting pipe 9 extends to the front cover 4, the bottom of the dust collecting pipe is connected to the exhaust fan, and the rear end of the feeding nozzle 803 is connected to the discharge port 3 06 connection, the filling device 3 includes an impeller box 301, the feed port 305 is arranged at the top of the impeller box 301, the discharge port 306 is arranged on the side wall of the bottom surface of the impeller box 301, the inner bottom surface of the impeller box 301 is provided with an impeller 308, the bottom of the impeller 308 is provided with a drive shaft 302, the bottom end of the drive shaft 302 extends out of the impeller box 301 to connect the drive mechanism 303, the side wall of the impeller box 301 is evenly distributed with four air inlet holes 304, the outer end of the air inlet hole 30 is connected to the compressed air source, a control valve 307 is installed between the discharge port 306 and the feed nozzle 803, and the control valve 307 is connected to the weighing sensor 11 through the controller 2.

[0034] See also Figure 8The control valve 307 described in this embodiment includes a fixed bracket 371, and a silicone sleeve 376 is installed in the fixed bracket 371. The silicone sleeve 376 runs through the front and rear ends of the fixed bracket 371, and one end of the silicone sleeve 376 is connected to the discharge port 306. A support plate 373 is provided at each end of the left and right ends of the fixed bracket 371. Each support plate 373 is provided with a connecting shaft, and a vertical clamping rod 374 is provided at the inner end of the connecting shaft. The outer end of the connecting shaft is connected to the actuator. The actuator is actuated to move the two clamping rods 374 toward the middle to clamp the silicone sleeve 376 to achieve material interception.

[0035] In this embodiment, a vent hole 377 is provided on the bottom surface of the fixed bracket 371. One end of the vent hole 377 is connected to the silicone sleeve 376, and the outer end of the vent hole 377 is connected to the pulse compressed air source. During operation, the pulse air source is mixed with the material to improve the fluidity of the material.

[0036] In this embodiment, a guide bracket 372 is installed between the two support plates 373. A guide groove is provided in the guide bracket 372, and one end of the clamping rod 374 is positioned in the guide groove.

[0037] The actuator described in this embodiment adopts cylinder 375.

[0038] The impeller in this embodiment includes a chassis 381 , which is fixedly connected to the drive shaft 302 , and three blades 382 are evenly distributed on the top of the chassis 381 .

[0039] See also Figure 9-13 This embodiment includes a support frame 801, a feeding nozzle 803 is provided on the top of the support frame 801, a bag pressing mechanism is provided above the feeding nozzle 803, and a bag holding frame 807 is provided below the feeding nozzle 803. Two sets of connecting rod mechanisms are symmetrically provided on both sides of the support frame 801, and the connecting rod mechanisms are connected to the bag holding frame 807. A horizontal push drive mechanism is installed on the support frame 801, and the output end of the horizontal push drive mechanism is connected to the bag holding frame 807. A saddle 813 is installed at the lower end of the bag holding frame 807. The saddle 813 is used to support the bottom of the packaging bag. The inner end of the saddle 813 is hinged to the bag holding frame 807, and a flip drive mechanism is installed on the bag holding frame 807. Structure, the flipping drive mechanism is connected to the saddle 813; when unloading, the horizontal push drive mechanism first pushes the bag holding rack 807 outward to separate from the feeding nozzle 803, and then the flipping drive mechanism drives the saddle 813 to flip downward by a certain angle so that the packaging bag falls vertically to the conveying device below. Two longitudinal support rods 7 extending forward are provided on both sides of the frame 1, and the two longitudinal support rods 7 are provided with mounting grooves arranged along the length direction. Transverse support rods 6 are installed in the mounting grooves, and a limit block 5 is installed at each opposite end of the two transverse support rods 6. The limit block 5 is used to limit the horizontal movement distance of the bag holding rack 807.

[0040] The connecting rod mechanism described in this embodiment includes two support plates A809 and two support plates B815. The support plates A809 are symmetrically arranged on both sides of the upper end of the bag holding frame 807, and the support plates B815 are symmetrically arranged at the lower end of the support frame 801. A connecting rod A811 is hinged between the inner end of the support plate A809 and the bottom of the support frame 801, and a connecting rod B810 is hinged between the outer end of the support plate A809 and the outer end of the support plate B815. The support plates A809, the support plates B815, the connecting rod A811, and the connecting rod B810 constitute a four-bar linkage mechanism.

[0041] The weighing sensor 11 described in this embodiment is installed on the top of the frame 1. The weighing sensor 11 is connected to the support frame 801 through a pull rod 10. A set of connecting components are installed at the top and bottom corners of the support frame 801. The connecting components include a fixed block A822 and a fixed block B823. The fixed block A822 is fixedly connected to the support frame 801, and the fixed block B823 is fixedly connected to the frame 1. The fixed block A822 and the fixed block B823 are connected by a spring plate 824.

[0042] The horizontal push drive mechanism of this embodiment includes a mounting base arranged on the support frame 801, and a cylinder 816 is installed on the mounting base. The output end of the cylinder 816 is hinged to the connecting rod A811.

[0043] The bag holding rack 807 described in this embodiment is provided with a mounting groove 808 arranged in the vertical direction, and a mounting plate 812 is installed in the mounting groove 808. Two bearing seats are provided at the front end of the mounting plate 812, and a rotating shaft 814 is installed in the two bearing seats. The inner end of the saddle 813 is fixedly connected to the rotating shaft 814. The height of the mounting plate 812 can be adjusted up and down in the mounting groove 808 and is fixed by four bolts.

[0044] The bag holding rack 807 of this embodiment is also provided with a clearance groove 818, which is parallel to the mounting groove 808. The flipping drive mechanism includes a motor 817, which is mounted at the rear end of the mounting plate. The output shaft of the motor 817 is equipped with a rocker A819, and one end of the rotating shaft 814 is equipped with a rocker B821. The inner end of the rocker B821 passes through the clearance groove 818 and is hinged to a connecting rod 820, and the bottom end of the connecting rod 820 is hinged to the rocker A819.

[0045] The bag pressing mechanism described in this embodiment includes a bracket arranged on the top of the support frame 801, and a cylinder 802 is installed on the bracket. The piston rod of the cylinder 802 is vertically downward and is equipped with a pressing block, which is opposite to the feeding nozzle 803.

[0046] In this embodiment, a U-shaped lever 804 is installed on the support frame 801 below the feeding nozzle 803. Both ends of the lever 804 are rotatably connected to the support frame 801. One end of the lever 804 is equipped with a signal plate 805. A proximity switch 806 is installed on the support frame 801 corresponding to the signal plate 805. When the packaging bag is hung on the feeding nozzle 803, it drives the lever 804 to rotate. The proximity switch 806 senses the signal plate 805, triggering a signal sent to the controller 2 to enable the equipment to perform the filling action.

Claims

1. A powder material packaging machine, comprising a frame, a bag-carrying and conveying device mounted at the front end of the frame, a weighing sensor mounted on the frame, the weighing sensor connected to the bag-carrying and conveying device, and a filling device mounted at the rear end of the frame, characterized in that: The filling device is provided with a feed port and a discharge port, the feed port is connected to a silo for storing materials, the bag holding and conveying device is provided with a feeding nozzle, the rear end of the feeding nozzle is connected to the discharge port, the filling device includes an impeller box, the feed port is arranged on the top of the impeller box, the discharge port is arranged on the side wall of the bottom surface of the impeller box, the bottom surface of the impeller box is provided with an impeller, the bottom of the impeller is provided with a drive shaft, the bottom end of the drive shaft extends out of the impeller box to connect to the drive mechanism, the side wall of the impeller box is also provided with at least one air inlet, the outer end of the air inlet is connected to a compressed air source, a control valve is provided between the discharge port and the feeding nozzle, and the control valve is connected to the weighing sensor through a controller; The bag holding and conveying device includes a support frame, the top of the support frame is provided with the feeding nozzle, the support frame is provided with a bag pressing mechanism above the feeding nozzle, and a bag holding frame is provided below the feeding nozzle. Two sets of connecting rod mechanisms are symmetrically provided on both sides of the support frame, and the connecting rod mechanisms are connected to the bag holding frame. A horizontal push driving mechanism is installed on the support frame, and the output end of the horizontal push driving mechanism is connected to the bag holding frame. A saddle is installed at the lower end of the bag holding frame, and the saddle is used to support the bottom of the packaging bag. The inner end of the saddle is hinged to the bag holding frame, and a flip driving mechanism is installed on the bag holding frame, which is connected to the saddle. When unloading, the horizontal push driving mechanism first pushes the bag holding frame outward to separate from the feeding nozzle, and then the flip driving mechanism drives the saddle to flip downward by a certain angle so that the packaging bag falls vertically onto the conveying device below; The bag holding frame is provided with a mounting groove arranged in a vertical direction, a mounting plate is installed in the mounting groove, two bearing seats are provided at the front end of the mounting plate, a rotating shaft is installed in the two bearing seats, the inner end of the saddle is fixedly connected to the rotating shaft, and the height of the mounting plate can be adjusted up and down in the mounting groove; The bag holding rack is further provided with a clearance groove, which is parallel to the mounting groove. The flip driving mechanism includes a motor, which is mounted at the rear end of the mounting seat. The output shaft of the motor is equipped with a rocker A. One end of the rotating shaft is equipped with a rocker B. The inner end of the rocker B passes through the clearance groove and is hinged to a connecting rod. The bottom end of the connecting rod is hinged to the rocker A. The connecting rod mechanism includes two support plates A and two support plates B. The support plates A are symmetrically arranged on both sides of the upper end of the bag holding frame, and the support plates B are symmetrically arranged at the lower end of the support frame. A connecting rod A is hinged between the inner end of the support plate A and the bottom of the support frame, and a connecting rod B is hinged between the outer end of the support plate A and the outer end of the support plate B. The support plates A, support plates B, connecting rod A, and connecting rod B constitute a four-bar linkage mechanism.

2. A powder material packaging machine according to claim 1, characterized in that: The control valve includes a fixed bracket, a hose is installed in the fixed bracket, the hose passes through the front and rear ends of the fixed bracket, one end of the hose is connected to the discharge port, a support plate is provided on the left and right ends of the fixed bracket, each support plate is provided with a connecting shaft, a vertical clamping rod is provided at the inner end of the connecting shaft, and the outer end of the connecting shaft is connected to the actuator. The actuator is actuated to move the two clamping rods toward the middle to clamp the hose to achieve material interception.

3. A powder material packaging machine according to claim 2, characterized in that: A guide bracket is arranged between the two support plates, a guide groove is arranged in the guide bracket, and one end of the clamping rod is positioned in the guide groove.

4. The powder material packaging machine according to claim 1, characterized in that: The weighing sensor is installed on the top of the frame and is connected to the support frame through a pull rod. A set of connecting components are installed at the top and four corners of the bottom of the support frame. The connecting components include a fixed block A and a fixed block B. The fixed block A is fixedly connected to the support frame, and the fixed block B is fixedly connected to the frame. The fixed block A and the fixed block B are connected by a spring plate.

5. The powder material packaging machine according to claim 1, characterized in that: The bag pressing mechanism includes a bracket arranged on the top of the support frame, a cylinder is installed on the bracket, a piston rod of the cylinder is vertically downward and is equipped with a pressing block, and the pressing block is directly facing the feeding nozzle.

6. The powder material packaging machine according to claim 1, characterized in that: A U-shaped lever is installed on the support frame below the feeding nozzle, and both ends of the lever are rotatably connected to the support frame. A signal plate is installed at one end of the lever, and a proximity switch is installed at the corresponding signal plate on the support frame.

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