Automatic weighing device

Abstract

The utility model relates to an automatic weighing device in the mechanical field, which comprises a fixed disc, an electronic scale is arranged on the fixed disc, a blanking hopper is arranged above the electronic scale, and an electronic switch valve is arranged at a discharge port of the blanking hopper; the fixed disc is fixedly connected with a rotating disc through a vertical rotating shaft, the rotating shaft is connected with a stepping motor, a plurality of U-shaped open grooves are evenly formed in the rotating disc in the circumferential direction, matched U-shaped frames are fixed to the peripheries of the open grooves, clamping blocks matched with each other are arranged on the two opposite side walls of each U-shaped frame, and the fixed disc is matched with a feeding conveyor and a discharging conveyor. The discharging end of the feeding conveyor is located on the fixing disc, and the feeding end of the discharging conveyor is located on the fixing disc. According to the automatic weighing device, efficient and continuous automatic weighing operation can be achieved, feeding and discharging are convenient, the automation degree is high, the labor cost is low, and the production efficiency and the weighing accuracy are improved.

Description

Technical Field

[0001] The utility model belongs to the field of machinery, and in particular relates to an automatic weighing device. Background Art

[0002] In factory product processing, some materials (such as charcoal and silica fume) require weighing during the production or packaging process. Electronic scales are commonly used for this purpose. However, this weighing process is often performed manually, resulting in high labor costs, high labor intensity, low continuity, and low production efficiency, making it unsuitable for modern, efficient production. Therefore, an automatic weighing device is needed to address these technical issues. Utility Model Content

[0003] In order to solve the above-mentioned defects in the prior art, the present invention provides an automatic weighing device, comprising a fixed plate, an electronic scale is provided on the fixed plate, a lower hopper is provided above the electronic scale, and an electronic switch valve is provided at the discharge port of the lower hopper; a vertical rotating shaft is provided at the center of the fixed plate, the rotating shaft is rotatably connected to the fixed plate through a bearing, the lower end of the rotating shaft is located below the fixed plate and is connected to a stepping motor, the upper end of the rotating shaft passes through the fixed plate and is fixedly connected to a turntable, the lower surface of the turntable is higher than the upper surface of the electronic scale, a plurality of U-shaped opening grooves are evenly provided on the turntable along the circumference, a matching U-shaped frame is fixed to the periphery of the opening groove, and two opposite side walls of the U-shaped frame are provided with mutually matching clamping blocks, and the clamping blocks are connected to the corresponding side walls of the U-shaped frame through a horizontal telescopic rod;

[0004] The fixed plate is equipped with a feed conveyor and a discharge conveyor. The discharge end of the feed conveyor is located on the fixed plate, and the conveying surface of the feed conveyor is flush with the upper surface of the electronic scale; the feed end of the discharge conveyor is located on the fixed plate, and the conveying surface of the discharge conveyor is flush with the upper surface of the electronic scale.

[0005] A stepper motor drives the turntable to rotate intermittently. When the turntable stops, one open slot is always located at the discharge end of the feed conveyor, one open slot is located at the feed end of the discharge conveyor, and one open slot is located above the electronic scale. At this time, the feed conveyor transports an empty box to the corresponding open slot. The two clamps in the slot, driven by a horizontal telescopic rod, move toward each other to clamp the empty box. The stepper motor then rotates again. When the empty box reaches the electronic scale, the clamps release their grip and the empty box is placed on the electronic scale. The discharge hopper unloads the material until it reaches the set weight. The electric switch valve closes, and the clamps once again clamp the filled box and rotate with the turntable again. When the filled box reaches the feed end of the discharge belt conveyor, the clamps release their grip again, and the filled box is placed on the discharge conveyor for transportation. In this process, empty boxes are continuously transported to the electronic scale and filled boxes are continuously transported away, achieving efficient and continuous automatic weighing operation.

[0006] Preferably, a bevel gear 1 is fixed on the rotating shaft below the fixed disk, the bevel gear 1 is meshed with a bevel gear 2, and the bevel gear 2 is connected to the stepping motor.

[0007] Preferably, the horizontal telescopic rod is an electric push rod, wherein a first wire channel is provided within the rotating shaft, and a second wire channel is provided within the U-shaped frame. The second wire channel is connected to the first wire channel via a wire tube. A main wire is provided within the first wire channel, the lower end of which is connected to an external power source via a conductive slip ring. The upper end of the main wire is connected to multiple branch wires, which are respectively passed through corresponding wire tubes and the second wire channel before being connected to the electric push rod. This arrangement ensures that the normal extension and retraction of each electric push rod is not affected while the turntable rotates.

[0008] Preferably, a controller is provided on the fixed plate, and the stepper motor, horizontal telescopic rod, feed conveyor, discharge conveyor, electronic scale, and electric switch valve are all electrically connected to the controller. This improves the degree of automation. The control principle of the controller and the connection with each component are all prior art and will not be further described here.

[0009] The present invention also includes other components that enable the normal operation of an automatic weighing device, such as a control component for a feed conveyor, a control component for a discharge conveyor, a control component for an electric push rod, a control component for a stepper motor, and a control component for an electric switch valve, all of which are conventional technical means in the art. In addition, devices or components not limited to the present invention, such as electric push rods, stepper motors, belt conveyors, electronic scales, electric switch valves, etc., all adopt conventional technical means and conventional equipment in the art.

[0010] The beneficial effects of the utility model include: realizing efficient and continuous automatic weighing operation, convenient loading and unloading, high degree of automation, low labor cost, and improving production efficiency and weighing accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 This is a schematic structural diagram of an automatic weighing device in an embodiment of the present utility model;

[0013] Figure 2 for Figure 1 Cross-sectional view at AA in the middle.

[0014] In the figure: 1. Fixed plate; 2. Turntable; 3. Feed conveyor; 4. Discharge conveyor; 5. U-shaped frame; 6. Clamping block; 7. Horizontal telescopic rod; 8. Wire tube; 9. Rotating shaft; 10. Electronic scale; 11. Box; 12. Bevel gear 1; 13. Bevel gear 2; 14. Stepper motor; 15. Conductive slip ring; 16. Wire channel 1. DETAILED DESCRIPTION

[0015] The present invention is described below in conjunction with the accompanying drawings and specific embodiments of the present invention. The description herein is intended only to explain the present invention and is not intended to limit the present invention. Based on the embodiments of the present invention, any modifications, equivalent substitutions, improvements, etc. made by those skilled in the art without creative work to all other embodiments obtained based on the embodiments of the present invention shall be included within the scope of protection of the present invention.

[0016] Example

[0017] like Figure 1-2 As shown, the utility model provides an automatic weighing device, including a fixed plate 1, which is fixed to the ground by a column, an electronic scale 10 is provided on the fixed plate 1, a lower hopper is provided above the electronic scale 10, and an electronic switch valve is provided at the discharge port of the lower hopper; a vertical rotating shaft 9 is provided in the center of the fixed plate 1, and the rotating shaft 9 is rotatably connected to the fixed plate 1 through a bearing, the lower end of the rotating shaft 9 is located below the fixed plate 1 and is connected to a stepping motor 14, the upper end of the rotating shaft 9 passes through the fixed plate 1 and is fixedly connected to a turntable 2, the lower surface of the turntable 2 is higher than the upper surface of the electronic scale 10, a plurality of U-shaped opening grooves are evenly provided on the turntable 2 along the circumference, and a matching U-shaped frame 5 is fixed to the periphery of the opening groove, and two opposite side walls of the U-shaped frame are provided with mutually matching clamping blocks 6, and the clamping blocks 6 are connected to the corresponding U-shaped frame side walls through a horizontal telescopic rod 7;

[0018] The fixed plate 1 is equipped with a feed conveyor 3 and a discharge conveyor 4, both of which are belt conveyors; the discharge end of the feed conveyor 3 is located on the fixed plate 1, and the conveying surface of the feed conveyor 3 is flush with the upper surface of the electronic scale 10; the feed end of the discharge conveyor 4 is located on the fixed plate 1, and the conveying surface of the discharge conveyor 4 is flush with the upper surface of the electronic scale 10.

[0019] A bevel gear 12 is fixed on the rotating shaft 9 below the fixed disk 1 . The bevel gear 12 is meshed with a bevel gear 2 13 . The bevel gear 2 13 is connected to a stepping motor 14 .

[0020] The horizontal telescopic rod 7 is an electric push rod. A wire channel 16 is provided within the rotating shaft 9, and a wire channel 2 is provided within the U-shaped frame. This wire channel 2 communicates with wire channel 16 via a wire conduit 8. A main wire is provided within wire channel 16, the lower end of which is connected to an external power source via a conductive slip ring 15. Multiple branch wires are connected to the upper end of the main wire. These branch wires pass through corresponding wire conduits 8 and wire channel 2 before connecting to the electric push rods. This arrangement allows the normal extension and retraction of the electric push rods to continue while the turntable 2 rotates.

[0021] The fixed plate 1 is provided with a controller, to which the stepper motor 14, horizontal telescopic rod 7, infeed conveyor 3, outfeed conveyor 4, electronic scale 10, and electric on / off valve are all electrically connected. This improves the level of automation. The control principles of the controller and the connections between the various components are conventional and will not be further described here.

[0022] Working principle: The stepper motor 14 drives the turntable 2 to rotate intermittently. When the turntable 2 stops rotating, there is always an open slot located at the discharge end of the feed conveyor 3, an open slot is located at the feed end of the discharging conveyor 4, and an open slot is located above the electronic scale 10. At this time, the feed conveyor 3 transports an empty box 11 to the corresponding open slot, and the two clamping blocks 6 of the open slot move toward each other under the action of the horizontal telescopic rod 7 to clamp the empty box 11. Then the stepper motor 14 rotates again. When the empty box 11 is transported to the top of the electronic scale 10, the clamping block 6 releases the clamping block, and the empty box 11 is placed on the electronic scale 10. The discharge hopper unloads the material until the set weight is reached, and the electric switch valve is closed. The clamping block 6 clamps the box 11 filled with material again and rotates with the turntable 2 again. When the box 11 full of material is transported to the feed end of the discharging belt conveyor, the clamping block 6 releases the clamping block again, and the box 11 full of material is placed on the discharging conveyor 4 and transported away. In the above process, empty boxes 11 are continuously transported to the electronic scale 10, and boxes 11 filled with materials are continuously transported away, thereby achieving efficient and continuous automatic weighing operations.

[0023] While the embodiments of the present invention have been described above, the foregoing description is intended to be illustrative, non-exhaustive, and not limited to the disclosed embodiments. Numerous modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. An automatic weighing device comprising a fixed plate, an electronic scale mounted on the fixed plate, a hopper mounted above the electronic scale, and an electronic switch valve mounted at the discharge port of the hopper; characterized in that: A vertical rotating shaft is provided at the center of the fixed disk, and the rotating shaft is rotatably connected to the fixed disk through a bearing. The lower end of the rotating shaft is located below the fixed disk and is connected to a stepping motor. The upper end of the rotating shaft passes through the fixed disk and is fixedly connected to a turntable. The lower surface of the turntable is higher than the upper surface of the electronic scale. A plurality of U-shaped opening grooves are evenly provided on the turntable along the circumference. A matching U-shaped frame is fixed to the periphery of the opening groove. Mutually matching clamping blocks are provided on two opposite side walls of the U-shaped frame. The clamping blocks are connected to the corresponding side walls of the U-shaped frame through a horizontal telescopic rod. The fixed plate is equipped with a feed conveyor and a discharge conveyor. The discharge end of the feed conveyor is located on the fixed plate, and the conveying surface of the feed conveyor is flush with the upper surface of the electronic scale; the feed end of the discharge conveyor is located on the fixed plate, and the conveying surface of the discharge conveyor is flush with the upper surface of the electronic scale.

2. An automatic weighing device according to claim 1, characterized in that: A bevel gear 1 is fixed on the rotating shaft below the fixed disk, the bevel gear 1 is meshed with a bevel gear 2, and the bevel gear 2 is connected to the stepping motor.

3. An automatic weighing device according to claim 2, characterized in that: The horizontal telescopic rod is an electric push rod, a wire channel 1 is provided in the rotating shaft, a wire channel 2 is provided in the U-shaped frame, the wire channel 2 is connected to the wire channel 1 through a wire tube, a main wire is provided in the wire channel 1, the lower end of the main wire is connected to an external power supply through a conductive slip ring, the upper end of the main wire is connected to a plurality of branch wires, and the plurality of branch wires respectively pass through the corresponding wire tubes and wire channel 2 and are connected to the electric push rod.

4. The automatic weighing device according to claim 1, characterized in that: The fixed plate is provided with a controller, and the stepping motor, the horizontal telescopic rod, the feeding conveyor, the discharging conveyor, and the electric switch valve are all electrically connected to the controller.

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