A high-precision quantitative packaging equipment and control system for the production of Chinese herbal medicine slices

Abstract

The present invention provides a high-precision quantitative packaging equipment and a control system for the production of Chinese herbal medicine slices, which belongs to the technical field of filling and packaging equipment. It includes a feeding mechanism, a distribution mechanism and a packaging mechanism. The distribution mechanism includes: a plurality of sub-hoppers are arranged between a first receiving hopper and a second receiving hopper, and are evenly spaced and arranged in a circle and at least two layers are provided. The number of sub-hoppers in the two adjacent layers is the same and staggered. The bottom of the first receiving hopper is provided with a first discharge pipe connected to the uppermost sub-hopper; the sub-hoppers are provided with a discharge port connected to the second receiving hopper, and the bottoms of the sub-hoppers above the lowermost sub-hopper are provided with a diversion port. When the material in the upper sub-hopper is overweight, the material is mixed in the two lower sub-hoppers. When the material in the sub-hopper cannot be combined and matched for a long time, the material is fed back into the feeding hopper to improve the efficiency of the sub-hopper combination matching a combination that meets the nominal net content range, thereby improving the filling and packaging efficiency of the device.

Description

Technical Field

[0001] The invention relates to the technical field of filling and packaging equipment, and in particular to high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices and a control system thereof. Background Art

[0002] Chinese herbal medicine slices are Chinese herbal medicines that have been processed according to the theory and processing methods of traditional Chinese medicine and can be directly used in clinical Chinese medicine. At present, a large number of companies have processed a large number of Chinese herbal medicine slices through various processing equipment, and then packaged and sealed the slices according to the accurate weight for sale.

[0003] The patent with authorization announcement number CN210942334U discloses a Chinese herbal medicine packaging machine, including a distribution mechanism, a collection bin is provided at the bottom of the distribution mechanism, a packaging mechanism is provided at the bottom of the collection bin, the packaging mechanism includes a first roller, a packaging roll is sleeved on the circumferential surface of the first roller, and the pulled-out part of the packaging roll is clamped by an electric clamping finger, and the electric clamping finger controls the pulling-out part to move upward; the Chinese herbal medicine packaging machine also includes a suction mechanism, two groups of suction mechanisms simultaneously adsorb the bag surfaces on both sides of the pulling-out part and pull them outward to form a bag opening, and the bag opening is opposite to the discharge port of the collection bin; the Chinese herbal medicine packaging machine also includes a top edge sealing mechanism, a bottom edge sealing mechanism and a cutting mechanism, and the cutting mechanism is used to cut the pulling-out part to form a packaging bag.

[0004] In the current technology, materials are intermittently put into multiple weighing buckets, the materials in each weighing bucket are combined, and the combination method closest to the set weight is selected, and the materials in the target weighing bucket are put into the packaging mechanism below to be packaged into products. However, the weight of the products packaged in this way varies greatly, and it is easy for the net weight of the contents to not meet the standard and need to be removed for recycling, or the net weight of the contents exceeds the standard, causing the packaging bag to swell and break, etc., which affects the production stability of the product and increases the workload of the staff. Summary of the invention

[0005] In view of the above problems in the prior art, the present invention provides a high-precision quantitative packaging device for the production of Chinese herbal medicine slices and a control system thereof.

[0006] In order to achieve the above-mentioned object of the invention, the technical solution adopted by the present invention is as follows:

[0007] In a first aspect, a high-precision quantitative packaging device for the production of Chinese herbal medicine slices is provided, comprising a feeding mechanism, a dispensing mechanism and a packaging mechanism.

[0008] The feeding mechanism includes a feeding hopper and a material elevator, the upper and lower openings of the feeding hopper, and the feeding end of the material elevator is connected to the lower opening of the feeding hopper;

[0009] The distribution mechanism includes a first receiving hopper, a second receiving hopper, and a plurality of sub-hoppers. The first receiving hopper is arranged directly below the discharge end of the material elevator, the second receiving hopper is located directly below the first receiving hopper, and the plurality of sub-hoppers are arranged between the first receiving hopper and the second receiving hopper. A plurality of sub-hoppers are evenly spaced along the circumference of the first receiving hopper. A first discharge pipe corresponding to and connected to the uppermost sub-hopper is arranged at the bottom of the first receiving hopper, and a first electronic valve is arranged on the first discharge pipe.

[0010] The material distribution hoppers are provided with at least two layers in the vertical direction, the number of the material distribution hoppers in each layer is the same, the material distribution hoppers in the two adjacent layers are staggered, the material distribution hoppers are provided with a discharge port controlled by a second electronic valve on one side of the axis of the first receiving hopper, the bottoms of the material distribution hoppers above the lowest material distribution hopper are provided with a diversion port, and a third electronic valve for opening and closing the diversion port is provided, the upper opening of the second receiving hopper is located directly below the upper discharge port of the material distribution hopper, and the lower opening of the second receiving hopper is connected to the packaging mechanism;

[0011] The material distribution hopper is provided with a weighing sensor for weighing the weight of the material in the hopper itself;

[0012] The packaging mechanism is used for packaging the materials discharged from the lower opening of the second receiving hopper.

[0013] Furthermore, a discharge channel is connected to one side of the lower opening of the second material receiving hopper, a flap is rotatably connected inside the second material receiving hopper, a second driving member is provided on the outside of the second material receiving hopper, the second driving member is connected to the movable end of the flap, and the flap is driven to rotate by the second driving member to switch open / close the lower opening of the second material receiving hopper and the discharge channel, and the other end of the discharge channel is externally connected to the feeding hopper.

[0014] Furthermore, the inner bottom wall of the distribution hopper and the edge away from the axis of the first receiving hopper are provided with a guiding arc surface extending to the discharge port.

[0015] Furthermore, the bottom of the material distribution hopper is provided with a rounded arc surface that is concentrically matched with the guide arc surface. The third electronic valve includes an arc-shaped baffle and a first driving component. The inner arc surface of the arc-shaped baffle fits the rounded arc surface. Both sides of the arc-shaped baffle are fixedly connected with brackets, and the brackets are rotatably connected to the material distribution hopper. The first driving component is used to drive the bracket and the arc-shaped baffle to rotate with the axis of the rounded arc surface as the rotation center.

[0016] Furthermore, an auxiliary discharge blowing assembly is provided in the material distribution hopper, and the auxiliary discharge blowing assembly includes a plurality of blowing nozzles arranged horizontally on the inner wall of the material distribution hopper close to the axis of the first receiving hopper. One end of the blowing nozzle extends out of the material distribution hopper and is connected to an external air source, and the other end is directed toward the higher edge of the arc surface in the material distribution hopper.

[0017] Furthermore, the second electronic valve includes an electric push rod and a gate. The gate is slidably arranged above the discharge port of the dividing hopper. The electric push rod is fixed on the outer wall of the dividing hopper. The piston rod of the electric push rod is fixedly connected to the gate. The electric push rod drives the gate to rise and fall vertically relative to the dividing hopper to open and close the discharge port.

[0018] Furthermore, a guide plate is provided above the opening of the sub-hoppers other than the uppermost sub-hoppers and between adjacent sub-hoppers, and the upper surface of the guide plate extends from the middle of the gap between the sub-hoppers on both sides to the upper openings of the sub-hoppers on both sides.

[0019] Furthermore, a stirring assembly is provided in the first material receiving hopper, and a mounting box is fixedly provided at the top opening of the first material receiving hopper. The stirring assembly includes a rotating shaft coaxially arranged in the first material receiving hopper, the top end of the rotating shaft extends into the mounting box and is rotatably connected to the mounting box, and a plurality of stirring blades are fixedly provided at the bottom of the rotating shaft at evenly spaced intervals along its circumference. A driving rod is horizontally rotatably connected to the side wall of the first material receiving hopper, one end of the driving rod extends into the mounting box and is transmission-connected to the rotating shaft, and the other end is connected to a driving motor.

[0020] In a second aspect, a control system for a high-precision quantitative packaging device for the production of Chinese herbal medicine slices is provided, which is applied to a high-precision quantitative packaging device for the production of Chinese herbal medicine slices as provided in the first aspect, comprising a collection module, a processing module and an execution module, wherein the collection module comprises a weighing sensor arranged on each material distribution hopper of each layer from top to bottom, and the weighing sensors of each layer are electrically connected to the processing module;

[0021] The weighing sensor is used to collect the weight data of the material in the distribution hopper and send a numerical signal containing the weight data value to the processing module;

[0022] The processing module receives the numerical signal sent by each weighing sensor, and after confirming that the material in the uppermost hopper is empty based on the numerical signal, sends a signal to the execution module to control the first receiving hopper to refill the material to the hopper;

[0023] When it is confirmed that the material in the middle hopper of the upper layer is overweight, a signal is sent to the execution module to control the hopper of this part to open the diversion port to distribute the material to the two middle hoppers of the next layer;

[0024] When it is confirmed that the weight of the material in any diverter hopper has not changed within a preset time, a signal is sent to the execution module to control the diverter hopper of this part to open the discharge port, and control the second receiving hopper to connect to the discharge channel.

[0025] Furthermore, the execution module includes first electronic valves arranged on the first receiving hopper, second electronic valves arranged on the respective material distribution hoppers, third electronic valves arranged on the respective material distribution hoppers, and a second driving member arranged on the second receiving hopper, and the first electronic valves, the second electronic valves, the third electronic valves, and the second driving member are all electrically connected to the processing module;

[0026] After confirming that the material in the uppermost hopper is empty, the first receiving hopper is controlled to refill the material to the hopper, including:

[0027] When the weight data value in the numerical signal sent by the weighing sensor on the uppermost material distribution hopper is less than the preset first set value, the processing module sends a feeding signal to the first electronic valve on the first receiving hopper corresponding to the first target material distribution hoppers corresponding to the weighing sensors of the part, and the first electronic valve opens the first discharge pipe in response to the feeding signal;

[0028] When it is confirmed that the material in the middle hopper of the upper layer is overweight, the hopper of this part is controlled to open the diversion port to distribute the material to the two middle hoppers of the next layer, including:

[0029] When the weight data value in the numerical signal sent by the several weighing sensors in the upper layer is greater than the preset second set value, the processing module sends a diversion signal to the third electronic valves on the several second target material distribution hoppers corresponding to the several weighing sensors in the part, and the third electronic valve opens the diversion port on the material distribution hopper in response to the diversion signal;

[0030] When confirming that the weight of the material in any diverter hopper has not changed within the first preset time, control the diverter hopper of this part to open the discharge port, and control the second receiving hopper to connect to the discharge channel, including:

[0031] When the weight data values ​​in multiple numerical signals continuously sent by the weighing sensor on any distributing hopper within the first preset time period are the same, the processing module sends a discharge signal to the second electronic valves on several third target distributing hoppers corresponding to the several weighing sensors in this part and the second driving member on the second receiving hopper, and the second electronic valve opens the discharge port on the distributing hopper in response to the discharge signal, and the second driving member drives the flap to rotate in response to the discharge signal to open the discharge channel and close the lower opening of the second receiving hopper.

[0032] The beneficial effects of the present invention are as follows: by adopting a multi-layer dividing hopper, when the material in the upper dividing hopper is overweight, the material can be evenly distributed in the two lower dividing hoppers; when the material in the dividing hopper cannot be combined and matched for a long time, the material in this part of the dividing hopper is discharged and returned to the feeding hopper, and the material in the dividing hopper is updated in time, thereby improving the efficiency of combining the dividing hoppers to match a combination that meets the nominal net content range, thereby improving the filling and packaging efficiency of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 This is a schematic diagram of the overall structure of the high-precision quantitative packaging equipment of Example 1 of the present application;

[0034] Figure 2 This is a schematic diagram of the overall structure of the distribution mechanism of Example 1 of the present application;

[0035] Figure 3 for Figure 2 A magnified schematic diagram of part A;

[0036] Figure 4 This is a schematic diagram of a partial cross-sectional state of the first material receiving hopper in Example 1 of the present application;

[0037] Figure 5 This is an overall schematic diagram of some of the material distribution hoppers in Example 1 of the present application;

[0038] Figure 6 This is a schematic diagram of the open state of the bottom diversion port of the distribution hopper of Example 1 of the present application;

[0039] Figure 7 This is a partial cross-sectional schematic diagram of the second material receiving hopper in Example 1 of the present application;

[0040] Figure 8 This is a logical control diagram of the control system of Example 2 of the present application.

[0041] Among them, 1. feeding mechanism; 11. feeding hopper; 12. material elevator; 2. distribution mechanism; 21. first receiving hopper; 211. first discharge pipe; 212. first electronic valve; 22. second receiving hopper; 221. discharge channel; 222. flap; 223. second driving member; 23. distribution hopper; 231. discharge port; 232. second electronic valve; 2321. electric push rod; 2322. gate; 233. diversion port; 234. third electronic valve; 2341. arc baffle; 2342. first driving member; 2343. bracket; 24. guide plate; 3. packaging mechanism; 4. air blowing nozzle; 5. stirring assembly; 51. installation box; 52. rotating shaft; 53. stirring blade; 54. driving rod; 55. driving motor; 6. weighing sensor. DETAILED DESCRIPTION

[0042] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0043] Example 1

[0044] The embodiment of the present invention provides a high-precision quantitative packaging device for the production of Chinese herbal medicine slices, referring to Figure 1, including a feeding mechanism 1, a distribution mechanism 2 and a packaging mechanism 3, and the feeding mechanism 1, the distribution mechanism 2 and the packaging mechanism 3 share a unified metal frame. The feeding mechanism 1 includes a feeding hopper 11 and a material elevator 12, and the feeding hopper 11 has upper and lower openings. The material elevator 12 in the embodiment of the present application adopts a chain plate conveyor belt combined with a bucket elevator, and the chain plate conveyor belt is connected to the feeding end of the bucket elevator. The feeding end of the chain plate conveyor belt extends to the lower opening of the material feeding hopper 11. The bucket elevator lifts the material and sends it out from the discharging end of the bucket elevator.

[0045] Reference Figure 2 The distribution mechanism 2 includes a first receiving hopper 21, at least two layers of sub-hoppers 23 and a second receiving hopper 22 arranged from top to bottom. The first receiving hopper 21 and the second receiving hopper 22 are coaxially arranged, and each layer of sub-hoppers 23 has a plurality of sub-hoppers 23, and the plurality of sub-hoppers 23 are evenly spaced along the circumference of the first receiving hopper 21, and the number of sub-hoppers 23 in two adjacent layers is the same and the positions are staggered.

[0046] Reference Figure 4 The top of the first receiving hopper 21 is located directly below the discharge end of the bucket elevator in the material elevator 12, and the bottom of the first receiving hopper 21 is connected to multiple first discharge pipes 211 for discharging materials. Each first discharge pipe 211 is directly opposite to the upper opening of a sub-hopper 23 in the top layer, and each first discharge pipe 211 is installed with a first electronic valve 212 to open and close the first discharge pipe 211 by electronic control.

[0047] Reference Figure 5 , each of the sub-hoppers 23 is provided with a discharge port 231 at the bottom of one side facing the first material receiving axis, and a second discharge pipe for guiding is connected to the outside of the discharge hopper, and one end of the second discharge pipe away from the discharge hopper is located directly above the second receiving hopper 22, and a second electronic valve 232 is provided on the sub-hopper 23 to control the opening and closing of the discharge port 231 by electronic control. In the embodiment of the present application, the second electronic valve 232 includes an electric push rod 2321 and a gate 2322, and the gate 2322 is slidably connected to the outer wall outside the discharge port 231 of the sub-hopper 23, and the electric push rod 2321 is fixedly installed on the outer wall of the sub-hopper 23 by screws, and the piston rod of the electric push rod 2321 is fixedly connected to the gate 2322, and the piston rod of the electric push rod 2321 is extended and retracted to push the gate 2322 to vertically rise and fall relative to the sub-hopper 23, thereby opening / closing the discharge port 231.

[0048] Reference Figure 2 , 3Each sub-hopper 23 is fixedly connected to the frame through an independent weighing sensor 6, and each weighing sensor 6 can weigh the weight of the material in the corresponding sub-hopper 23. In the embodiment of the present application, the inner bottom wall of the sub-hopper 23 and the edge away from the axis of the first receiving hopper 21 are provided with a guide arc surface extending to the discharge port 231, so that the material in the sub-hopper 23 can naturally flow to the discharge port 231 under the action of gravity, thereby improving the discharge efficiency of the material in the sub-hopper 23. And the bottom of the sub-hopper 23 is provided with a fillet arc surface concentrically matched with the guide arc surface, so that the sub-hopper 23 can maintain a thin wall and lightweight equipment.

[0049] Reference Figure 6 In the sub-hoppers 23 located in other layers except the bottom layer, a diversion port 233 is opened through the bottom of the sub-hopper 23, and the diversion port 233 corresponds to the upper openings of the two sub-hoppers 23 in the lower layer. A third electronic valve 234 is also provided at the bottom of the sub-hopper 23 for opening and closing the diversion port 233 by electronic control. In the embodiment of the present application, the third electronic valve 234 includes an arc-shaped baffle 2341 and a first driving member 2342. The inner arc surface of the arc-shaped baffle 2341 fits the rounded arc surface. Both sides of the arc-shaped baffle 2341 are fixedly connected with brackets 2343. The end of the bracket 2343 away from the arc-shaped baffle 2341 is rotatably connected to the distribution hopper 23. The first driving member 2342 can adopt a servo motor. The servo motor is fixedly installed on the outer wall of the distribution hopper 23 by screws. The output shaft of the servo motor is connected to the rotating shaft 52 of the bracket 2343 by means of not limited to toothed belt drive, chain drive, belt drive, etc., thereby driving the arc-shaped baffle 2341 to slide along the arc surface at the bottom of the distribution hopper 23 to open / close the diversion port 233.

[0050] In order to avoid waste caused by the material in the dividing hoppers 23 falling out from the gap between the two dividing hoppers 23 when the material in the lower dividing hoppers 23 is mixed, in the embodiment of the present application, a guide plate 24 is further provided above the opening of the dividing hoppers 23 other than the uppermost dividing hopper 23 and between adjacent dividing hoppers 23, and the upper surface of the guide plate 24 extends from the middle of the gap between the dividing hoppers 23 on both sides to the upper opening of the dividing hoppers 23 on both sides, so that the gap between the dividing hoppers 23 is blocked by the guide plate 24.

[0051] Reference Figure 7 The lower opening of the second material receiving hopper 22 is connected to the feeding end of the packaging mechanism 3. In the embodiment of the present application, the packaging mechanism 3 can adopt existing equipment structures such as a filling and packaging machine and an automatic bagging machine. After a certain amount of material is dropped downward from the second material receiving hopper 22, the packaging and packaging work is automatically performed through photoelectric sensing.

[0052] In order to ensure that the material in the first receiving hopper 21 can be discharged smoothly through the first discharge pipe 211, in the embodiment of the present application, a stirring assembly 5 is provided in the first receiving hopper 21, and the stirring assembly 5 includes a rotating shaft 52, a stirring blade 53, a driving rod 54 and a driving motor 55. A mounting box 51 is fixedly connected to the middle of the opening of the first receiving hopper 21 through a connecting rod, and at least two connecting rods are provided and fixedly mounted at the opening of the first receiving hopper 21. The top of the rotating shaft 52 extends into the mounting box 51 and is rotatably connected to the mounting box 51, and the bottom of the rotating shaft 52 extends to the bottom of the first receiving hopper 21, and is fixedly connected to the stirring blade 53 as a whole. The stirring blade 53 is evenly spaced along the circumference of the rotating shaft 52. The driving rod 54 is located directly below a connecting rod, one end of the driving rod 54 extends into the installation box 51, and is connected to the rotating shaft 52 through a bevel gear or a worm gear, and the other end of the driving rod 54 is connected to the output shaft of the driving motor 55 through a coupling, a gear, etc., and the driving motor 55 is fixedly installed on the outer wall of the first receiving hopper 21 through screws. The stirring blade 53 adopts a slender rod body, and the driving motor 55 drives the rotating shaft 52 to rotate, so that the stirring blade 53 breaks the arched material in the first receiving hopper 21, thereby improving the material discharge efficiency.

[0053] In order to improve the material discharge effect in the sub-hopper 23, in the embodiment of the present application, an auxiliary discharge blowing assembly is provided in each sub-hopper 23, and the auxiliary discharge blowing assembly includes a plurality of blowing nozzles 4 arranged horizontally on the inner side wall of the sub-hopper 23 near the axis of the first receiving hopper 21, one end of the blowing nozzle 4 extends out of the sub-hopper 23 and is connected to an external air source, and the other end faces the higher edge of the guiding arc surface in the sub-hopper 23. The blowing nozzle 4 blows air into the sub-hopper 23, and through the guiding effect of the guiding arc surface at the bottom of the sub-hopper 23, the airflow can be guided toward the discharge port 231 of the sub-hopper 23, so that the material can be quickly blown out of the sub-hopper 23 to the discharge port 231, thereby improving the discharge efficiency of the material in the sub-hopper 23.

[0054] Example 2

[0055] Based on the same inventive concept, the embodiment of the present invention also provides a control system for a high-precision quantitative packaging device for the production of Chinese herbal medicine slices, which is applied to a high-precision quantitative packaging device for the production of Chinese herbal medicine slices provided in Example 1 of the present application, referring to Figure 8, including a collection module, a processing module and an execution module. Among them, the collection module includes a weighing sensor 6 arranged on each material distribution hopper 23 of each layer from top to bottom, and the weighing sensors 6 of different layer heights are classified and marked. The processing module can be a computer, and the execution module includes each first electronic valve 212 arranged on the first receiving hopper 21, a second electronic valve 232 arranged on each material distribution hopper 23, a third electronic valve 234 arranged on each material distribution hopper 23, and a second driving member 223 arranged on the second receiving hopper 22. Each weighing sensor 6 in the collection module and the first electronic valve 212, the second electronic valve 232, the third electronic valve 234 and the second driving member 223 in the execution module are all electrically connected to the processing module.

[0056] The weighing sensor 6 is used to collect the weight data of the material in the distributing hopper 23 where the weighing sensor 6 is located, and send a numerical signal containing the weight data value to the processing module.

[0057] The processing module receives the numerical signal sent by each weighing sensor 6 and classifies and marks it according to the layer number where the weighing sensor 6 corresponds to the distribution hopper 23 . The processing module can arrange and combine the weighing sensors 6, and add the weight data of the materials measured in at least one weighing sensor 6 on the distributing hopper 23. When it is confirmed that the weight value obtained by the addition is within the first preset range value set manually, it is confirmed that the total amount of materials in this part of the distributing hoppers 23 meets the net content requirement of a bag of products. This part of the distributing hoppers 23 is the fourth target distributing hopper, thereby sending a signal to the second electronic valve 232 on the fourth target distributing hopper and the second driving member 223 on the second receiving hopper 22, so that the second driving motor 55 drives the flap 222 to rotate to close the discharge channel 221 and open the lower opening of the second receiving hopper 22, and then the electric push rod 2321 in the second electronic valve 232 on the corresponding distributing hopper 23 pulls the gate 2322 up to open the discharge port 231, and the material falls from the fourth target distributing hopper into the second receiving hopper 22, and after being concentrated, falls into the packaging mechanism 3 for automatic bagging.

[0058] In the embodiment of the present application, the processing module is also based on the weight data value measured by the received weighing sensor 6 on the top layer. When the weight data value in the numerical signal sent by the weighing sensors 6 of several sub-hoppers 23 in the sub-hoppers 23 on the top layer is less than the preset first set value, it is confirmed that the material in this part of the sub-hoppers 23 is empty, and this part of the sub-hoppers 23 is the first target sub-hopper, and a refill signal is sent to the first electronic valve 212 on the first receiving hopper 21 corresponding to the weighing sensor 6 of the first target sub-hopper. The first electronic valve 212 opens the first discharge pipe 211 for a period of time in response to the refill signal, thereby instantly refilling the first target sub-hopper on the top layer, so that each sub-hopper 23 on the top layer can quickly participate in the intelligent material quality arrangement and combination and discharging work, thereby improving the combination and discharging efficiency.

[0059] In the embodiment of the present application, the processing module is also based on the weight data values ​​measured by the weighing sensors 6 on the other layers of the sub-hoppers 23 except the bottom layer of the sub-hoppers 23. When it is confirmed that the weight data values ​​measured by the weighing sensors 6 corresponding to the sub-hoppers 23 on the other layers except the bottom layer of the sub-hoppers 23 are greater than the preset second set value, it is confirmed that the materials in the part of the sub-hoppers 23 are overweight, and the part of the sub-hoppers 23 are the second target sub-hoppers. The second set value should be greater than the maximum value of the first preset range value. At this time, the materials in the second target sub-hopper cannot be combined with other sub-hoppers 23 and the nominal weight of the materials in the single bag product cannot be combined alone. At this time, the processing module sends a diversion signal to the third electronic valve 234 corresponding to the second target sub-hopper. The first driving member 2342 in the third electronic valve 234 drives the bracket 2343 to rotate in response to the diversion signal, so that the arc baffle 2341 slides away from the diversion port 233 at the bottom of the sub-hopper 23, thereby opening the diversion port 233 on the second target sub-hopper. The material falls from the second target sub-hopper diversion port 233 and evenly falls into the two sub-hoppers 23 on the lower layer. When the weight of the material in the two sub-hoppers 23 does not exceed the maximum value of the first preset range value, it can continue to participate in the intelligent weight combination arrangement, so that the processing module can quickly combine and screen out the sub-hopper 23 combination that meets the first preset range value, thereby improving the material combination efficiency.

[0060] When the weight of the material in the two lower hoppers 23 still exceeds the maximum value of the first preset range after diversion once, the material can continue to be diverted and evenly distributed to the hopper 23 at the lower level. When the overweight hopper 23 is the lowest hopper 23, the material is stored in the hopper 23 and continues to be maintained.

[0061] In an embodiment of the present application, the processing module is also based on the weight data values ​​periodically measured by the weighing sensors 6 on all the sub-hoppers 23 within a continuous period of time. When the weight data values ​​in multiple continuous numerical signals sent by the weighing sensor 6 on any sub-hopper 23 within the first preset time period are the same, it is confirmed that the weight of the material in this part of the sub-hoppers 23 has not changed within the first preset time period, and this part of the sub-hoppers 23 is the third target sub-hopper. This situation occurs when the weight of the material in the sub-hopper 23 located at the bottom layer exceeds the maximum value of the first preset range value, or the weight of the material in the sub-hopper 23 is so small that it cannot be combined with the weight of the material in other sub-hoppers 23 to form a combination that meets the first preset range value for a long time. At this time, the processing module sends a discharge signal to the second electronic valve 232 on the third target material distribution hopper and the second driving member 223 on the second material receiving hopper 22. The second electronic valve 232 opens the discharge port 231 on the third target material distribution hopper in response to the discharge signal. The second driving member 223 drives the flap 222 to rotate in response to the discharge signal to open the discharge channel 221 and close the lower opening of the second material receiving hopper 22.

[0062] It should be understood by those skilled in the art that, although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments once those skilled in the art are aware of the basic inventive concepts. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. A high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices, characterized in that: It comprises a feeding mechanism (1), a distributing mechanism (2) and a packaging mechanism (3); The feeding mechanism (1) comprises a feeding hopper (11) and a material elevator (12), wherein the feeding end of the material elevator (12) is connected to the lower opening of the feeding hopper (11); The distribution mechanism (2) comprises a first material receiving hopper (21), a second material receiving hopper (22), and a plurality of material distribution hoppers (23); the first material receiving hopper (21) is arranged directly below the material discharge end of the material hoist (12); the second material receiving hopper (22) is located directly below the first material receiving hopper (21); the plurality of material distribution hoppers (23) are arranged between the first material receiving hopper (21) and the second material receiving hopper (22); a plurality of material distribution hoppers (23) are evenly spaced along the circumference of the first material receiving hopper (21); a first material discharge pipe (211) corresponding to and connected to the uppermost material distribution hopper (23) is arranged at the bottom of the first material receiving hopper (21); a first electronic valve (212) is arranged on the first material discharge pipe (211); The material distribution hopper (23) is provided with at least two layers in the vertical direction, the number of the material distribution hoppers (23) in each layer is the same, and the material distribution hoppers (23) in two adjacent layers are staggered, and the material distribution hopper (23) is provided with a discharge port (231) controlled by a second electronic valve (232) on one side of the material distribution hopper (23) close to the axis of the first receiving hopper (21), and the bottom of the material distribution hopper (23) above the lowest layer is provided with a diversion port (233), and a third electronic valve (234) for opening and closing the diversion port (233), the upper opening of the second receiving hopper (22) is located directly below the discharge port (231) of the material distribution hopper (23), and the lower opening of the second receiving hopper (22) is connected to the packaging mechanism (3); One side of the lower opening of the second material receiving hopper (22) is connected to a discharge channel (221), the other end of the discharge channel (221) is externally connected to the feeding hopper (11), and a flap (222) is rotatably connected inside the second material receiving hopper (22); A guide plate (24) is further provided between adjacent material distribution hoppers (23) other than the uppermost material distribution hopper (23), and the upper surface of the guide plate (24) extends from the middle of the gap between the material distribution hoppers (23) on both sides to the upper openings of the material distribution hoppers (23) on both sides; The quantitative packaging equipment is based on a control system, the control system comprising a collection module, a processing module and an execution module, the collection module comprising a weighing sensor (6) arranged on each material distribution hopper (23) of each layer from top to bottom, and the weighing sensor (6) of each layer is electrically connected to the processing module; The weighing sensor (6) is used to collect weight data of the material in the distribution hopper (23); The processing module receives the numerical signal sent by each of the weighing sensors (6), confirms that the uppermost material distribution hopper (23) is the first target material distribution hopper based on the numerical signal, and sends a signal to the execution module to control the first receiving hopper (21) to refill the first target material distribution hopper; Confirm that the sub-hoppers (23) of the other layers except the sub-hopper (23) of the bottom layer with overweight materials are the second target sub-hoppers, and send a signal to the execution module to control the second target sub-hopper to open the diversion port (233) to distribute the materials to the two sub-hoppers (23) of the next layer; Confirm that the distribution hopper (23) whose material weight has not changed within a preset time period is the third target distribution hopper, send a signal to the execution module to control the third target distribution hopper to open the discharge port (231), and control the second receiving hopper (22) to connect to the discharge channel (221).

2. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 1, characterized in that: A second driving member (223) is disposed outside the second receiving hopper (22), and the second driving member (223) is connected to the movable end of the flap (222). The flap (222) is driven to rotate by the second driving member (223) to switch to open or close the lower opening of the second receiving hopper (22) and the discharge channel (221).

3. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 2, characterized in that: The inner bottom wall of the material distribution hopper (23) and the edge away from the axis of the first material receiving hopper (21) are both provided with a guiding arc surface extending to the discharge port (231).

4. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 3, characterized in that: The bottom of the material distribution hopper (23) is provided with a rounded arc surface that is concentrically matched with the guide arc surface. The third electronic valve (234) includes an arc-shaped baffle (2341) and a first driving member (2342). The inner arc surface of the arc-shaped baffle (2341) fits the rounded arc surface. Both sides of the arc-shaped baffle (2341) are fixedly connected with brackets (2343). The bracket (2343) is rotatably connected to the material distribution hopper (23). The first driving member (2342) is used to drive the bracket (2343) and the arc-shaped baffle (2341) to rotate with the axis of the rounded arc surface as the center of the rotating shaft (52).

5. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 3, characterized in that: The sub-hopper (23) is provided with an auxiliary discharge blowing assembly, which comprises a plurality of horizontally arranged blowing nozzles (4) arranged on the inner wall of the sub-hopper (23) close to the axis of the first receiving hopper (21), one end of the blowing nozzle (4) extends out of the sub-hopper (23) and is connected to an external air source, and the other end is directed toward the higher edge of the arc surface in the sub-hopper (23).

6. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 2, characterized in that: The second electronic valve (232) includes an electric push rod (2321) and a gate (2322); the gate (2322) is slidably arranged above the discharge port (231) of the distribution hopper (23); the electric push rod (2321) is fixed on the outer wall of the distribution hopper (23); the piston rod of the electric push rod (2321) is fixedly connected to the gate (2322); the electric push rod (2321) is used to drive the gate (2322) to vertically rise and fall relative to the distribution hopper (23) to open and close the discharge port (231).

7. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 2, characterized in that: A stirring assembly (5) is arranged in the first material receiving hopper (21), and a mounting box (51) is fixedly arranged at the top opening of the first material receiving hopper (21). The stirring assembly (5) comprises a rotating shaft (52) coaxially arranged in the first material receiving hopper (21), the top end of the rotating shaft (52) extends into the mounting box (51) and is rotatably connected to the mounting box (51), and a plurality of stirring blades (53) are fixedly arranged at even intervals along the circumference of the rotating shaft (52), and a driving rod (54) is horizontally rotatably connected to the side wall of the first material receiving hopper (21), one end of the driving rod (54) extends into the mounting box (51) and is transmission-connected to the rotating shaft (52), and the other end is connected to a driving motor (55).

8. The high-precision quantitative packaging equipment for the production of Chinese herbal medicine slices according to claim 1, characterized in that: The execution module comprises first electronic valves (212) arranged on the first receiving hopper (21), second electronic valves (232) arranged on the respective material distribution hoppers (23), and a second driving member (223) arranged on the second receiving hopper (22); the first electronic valves (212), the second electronic valves (232), the third electronic valves (234), and the second driving member (223) are all electrically connected to the processing module; Confirming that the uppermost material-discharging hopper (23) is the first target material-discharging hopper, and controlling the first receiving hopper (21) to replenish material to the first target material-discharging hopper, including: When the weight data value in the numerical signal sent by the weighing sensor (6) on the uppermost material distribution hopper (23) is less than a preset first set value, the processing module sends a material replenishment signal to the first electronic valve (212) on the first receiving hopper (21) corresponding to the weighing sensor (6) of the first target material distribution hopper, and the first electronic valve (212) opens the first discharge pipe (211) in response to the material replenishment signal; Confirming that the sub-hoppers (23) of the other layers except the sub-hopper (23) of the lowest layer with overweight materials are the second target sub-hoppers, and controlling the second target sub-hopper to open the diversion port (233) to distribute the materials to the two sub-hoppers (23) of the next layer, including: When the weight data values ​​in the numerical signals sent by a plurality of weighing sensors (6) in the layers other than the bottom layer are greater than a preset second set value, the processing module sends a diversion signal to the third electronic valve (234) corresponding to the second target material diversion hopper, and the third electronic valve (234) opens the diversion port (233) on the second target material diversion hopper in response to the diversion signal; Confirming that the material distribution hopper (23) whose material weight has not changed within a preset time period is the third target distribution hopper, controlling the third target distribution hopper to open a discharge port (231), and controlling the second receiving hopper (22) to communicate with a discharge channel (221), including: When the weight data values ​​in the multiple numerical signals continuously sent by the weighing sensor (6) on any distributing hopper (23) within a first preset time period are the same, the processing module sends a discharge signal to the second electronic valve (232) on the third target distributing hopper and the second driving member (223) on the second receiving hopper (22), and the second electronic valve (232) opens the discharge port (231) on the distributing hopper (23) in response to the discharge signal, and the second driving member (223) drives the flap (222) to rotate in response to the discharge signal to open the discharge channel (221) and close the lower opening of the second receiving hopper (22).

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