Conveyor mechanism of vertical medicine box packaging equipment and its control method

Abstract

The present invention provides a conveying mechanism and a control method thereof for a vertical medicine box packaging device, including a buffer conveying platform. The buffer conveying platform further includes a surrounding track above the conveyor belt. The surrounding track forms an interface part communicating with the inlet and the outlet, an arc-shaped channel arc-shapedly connecting between the ends of two adjacent conveyor belts, and a straight channel parallel to the conveyor belt and connecting between the interface part and the arc-shaped channel or between two arc-shaped channels. Moreover, an unloading opening communicating with the arc-shaped channel and close to the inlet is formed on the outer circle of the surrounding track, and a guiding edge for preventing the vertical medicine box is formed on the upper side of the unloading opening to prompt the dumped vertical medicine box to expose from the unloading opening. The conveying mechanism and the control method thereof for the vertical medicine box packaging device provided by the present invention solve the problem that the dumped vertical medicine boxes are likely to block the conveying channel at the arc-shaped channel, and achieve the purpose of improving the production operation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of traditional Chinese medicine pill packaging equipment, and particularly to a conveying mechanism and a control method thereof for a vertical medicine box packaging equipment. Background Art

[0002] When traditional Chinese medicine pills are loaded into boxes on packaging equipment, the medicine boxes are generally arranged vertically. On the one hand, this facilitates the loading of pills into the boxes. On the other hand, it can increase the number of medicine boxes on the conveying line, thereby improving the production efficiency of the packaging equipment. Due to the space limitation of the packaging workshop, the distance between each working station of the packaging equipment is limited, and most of the working stations of the packaging equipment operate intermittently. In order to buffer the medicine boxes within the limited conveying distance between adjacent working stations, a serpentine buffer mechanism is usually set up to form a buffer spacing between adjacent medicine boxes, so as to better meet the requirements of intermittent operation.

[0003] However, as the buffer spacing is formed between adjacent medicine boxes, the stability of the vertical medicine boxes also decreases. Under the influence of unstable conveying force, shaking and other factors, the medicine boxes are extremely prone to tipping over. Especially at the turning section of the serpentine buffer mechanism, the tipping medicine boxes will get stuck, resulting in the blockage of the conveying channel and the inability to carry out normal packaging operations. Summary of the Invention

[0004] In view of the above problems, the present invention is proposed to provide a conveying mechanism and a control method thereof for a vertical medicine box packaging equipment that can overcome or at least partially solve the above problems, and can solve the problem that the tipping vertical medicine boxes are prone to block the conveying channel at the arc channel, so as to achieve the purpose of improving the production operation efficiency.

[0005] Specifically, the present invention provides a conveying mechanism for a vertical medicine box packaging equipment. The vertical medicine box packaging equipment includes a pill loading station, a capping station, and a hot melting station arranged in sequence. A first conveying mechanism is connected between the pill loading station and the capping station, and a second conveying mechanism is connected between the capping station and the hot melting station. The first conveying mechanism includes:

[0006] A first main conveyor belt configured to be connected between the pill loading station and the capping station;

[0007] A buffer conveying platform is provided. The buffer conveying platform is located on one side of the first main conveyor belt and forms an inlet and an outlet that are respectively connected to both ends of the first main conveyor belt. The buffer conveying platform includes at least two co-planar and parallel conveyor belts that alternate in the bandwidth direction, and the conveying directions of two adjacent conveyor belts are opposite to each other. The buffer conveying platform further includes an enclosing track above the conveyor belts. The enclosing track forms an interface part that communicates with the inlet and the outlet, an arc channel that is arc-shaped and connected between the ends of two adjacent conveyor belts, and a straight channel that is parallel to the conveyor belts and connected between the interface part and the arc channel or between two arc channels. And,

[0008] An unloading opening that communicates with the arc channel and is close to the inlet is formed on the outer circle of the enclosing track. A guiding edge for preventing the vertical medicine box is formed on the upper side of the unloading opening to cause the tilted vertical medicine box to be exposed from the unloading opening.

[0009] Optionally, the unloading opening is opposite to the straight channel close to the inlet, and the opening width of the unloading opening is greater than the width of the straight channel. And, a flexible tongue is connected to the side of the unloading opening away from the inlet, and the tongue and the edge of the unloading opening enclose an unloading window that is smaller than the width of the straight channel.

[0010] Optionally, the conveying mechanism further includes a telescopic driving mechanism and a strain sensor connected to the tongue. The telescopic driving mechanism is configured to drive the tongue to expand and contract within the unloading opening, and the strain sensor is configured to detect the deformation amount of the tongue to control the expansion and contraction of the tongue according to the deformation amount.

[0011] Optionally, the second conveying mechanism includes:

[0012] A second main conveyor belt configured to convey the vertical medicine box between the capping station and the hot melting station;

[0013] A sorting mechanism located at one end of the second main conveyor belt close to the capping station. The sorting mechanism includes a defective product bin and a pushing mechanism that are relatively distributed on both sides of the second main conveyor belt. The top of the defective product bin is open and lower than the belt surface of the second main conveyor belt. The pushing mechanism includes a detection probe and a pneumatic push rod arranged in sequence along the conveying direction of the second main conveyor belt. The detection probe is configured to detect the height of the pills in the vertical medicine box, and the pneumatic push rod is configured to push the vertical medicine box on the second main conveyor belt into the defective product bin.

[0014] Optionally, the second main conveyor belt includes:

[0015] The rear section of the capping station, the rear section of the capping station is a conveyor belt structure and extends backward to be exposed, so as to convey the vertical medicine box backward;

[0016] The front section of the hot-melting station, the front section of the hot-melting station is a conveyor belt structure and extends and is exposed from the front section. The front section of the hot-melting station and the rear section of the capping station are arranged staggeredly left and right, so as to receive the vertical medicine box sent out from the rear section of the capping station and convey it backward;

[0017] The dislocation track, the dislocation track forms a front section channel arranged in parallel on the rear section of the capping station and a rear section channel arranged in parallel on the front section of the hot-melting station. The front section channel is spaced in front of the rear section channel, and is arc-transitionally connected to an inclined diagonal channel between the rear end of the front section channel and the front section of the rear section channel.

[0018] Optionally, the hot-melting station includes:

[0019] The working conveyor belt, the working conveyor belt includes the front section of the hot-melting station and an integrally arranged working conveying section behind it, so as to convey the vertical medicine box through the hot-melting station;

[0020] The strip-shaped track, the strip-shaped track is connected to one side of the rear end of the dislocation track far away from the rear section of the capping station; and

[0021] One side of the working conveyor belt close to the rear section of the capping station in the strip-shaped track is an open space.

[0022] The present invention provides a control method for a conveying mechanism, including:

[0023] Obtain the deformation amplitude of the tongue piece;

[0024] In response to the deformation amplitude of the tongue piece not being lower than the first amplitude threshold, control the telescopic driving mechanism so that the tongue piece is pulled out a set distance from the unloading opening.

[0025] Optionally, after controlling the telescopic driving mechanism so that the tongue piece is pulled out a set distance from the unloading opening, it further includes:

[0026] In response to the tongue piece staying for a first set time after being pulled out the set distance, control the telescopic driving mechanism to cause the tongue piece to return to the starting position;

[0027] In response to the deformation amplitude of the tongue piece not being lower than the second amplitude threshold before the tongue piece reaches the starting position, control the telescopic driving mechanism so that the tongue piece is pulled out from the unloading opening.

[0028] The present invention also provides a control method for a conveying mechanism, including:

[0029] Detect the height of the pills in the vertical medicine box;

[0030] In response to the height of the pills not being higher than the set material level, control the pneumatic push rod to push outwards, so as to push the vertical medicine box into the defective product bin and count it;

[0031] In response to the number of times the pneumatic push rod is pushed out within the second set time being not less than the first set threshold, control the first conveying mechanism to stop.

[0032] Optionally, the control method further includes:

[0033] In response to the number of times the pneumatic push rod is pushed out within the second set time being not less than the second set threshold, and the conveying speed of the first conveying mechanism not being lower than the speed threshold; then control the first conveying mechanism to decelerate;

[0034] Judge whether the first conveying mechanism decelerates within the second set time,

[0035] If so, use the deceleration moment of the first conveying mechanism as the starting moment of the second set time and re-time;

[0036] Wherein, the first set threshold is greater than the second set threshold.

[0037] In a conveying mechanism of the present invention, by setting a retaining track and forming a discharge opening on the outer circle of the retaining track that communicates with the arc-shaped channel and is close to the inlet. When the vertical medicine box is tilted, the tilted vertical medicine box is exposed from the discharge opening under the action of the conveyor belt and falls from the conveyor belt, solving the problem that the tilted vertical medicine box is prone to block the conveying channel at the arc-shaped channel, and achieving the purpose of improving the production operation efficiency.

[0038] Furthermore, a guiding edge for preventing the vertical medicine box is formed on the upper side of the discharge opening. The non-tilted vertical medicine box can be conveyed backward through the guiding edge, preventing the non-tilted vertical medicine box from also being exposed from the discharge opening.

[0039] In a control method of a conveying mechanism of the present invention, by setting a first amplitude threshold, the first amplitude threshold is the lowest deformation amount when the tilted vertical medicine box abuts on the tongue piece. When the deformation amount of the tongue piece is not less than the first amplitude threshold, it indicates that a vertical medicine box has been tilted, and the telescopic drive mechanism will control the tongue piece to be pulled out of the discharge opening, so that the tilted vertical medicine box is exposed from the discharge opening. By setting the first amplitude threshold, it can accurately detect whether there is a tilted vertical medicine box, thereby effectively preventing the conveying channel from being blocked.

[0040] In another control method of the conveying mechanism of the invention, a vertical medicine box with a pill height not higher than the set material level is pushed into the defective product bin and counted once. When the number of times the pneumatic push rod is pushed out within the second set time is not less than the first set threshold, the first conveying mechanism is controlled to stop. While detecting defective products, when the number of defective products appears too many times within a certain time, shutdown inspection can be carried out, which is beneficial to improving the product quality, controlling the finished product rate, and improving the production efficiency.

[0041] From the following detailed description of specific embodiments of the present invention in conjunction with the accompanying drawings, those skilled in the art will become more clear about the above and other objects, advantages and features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0042] Some specific embodiments of the present invention will be described in detail hereinafter with reference to the accompanying drawings in an exemplary but not restrictive manner. The same reference numerals in the drawings denote the same or similar components or parts. Those skilled in the art should understand that these drawings are not necessarily drawn to scale. In the drawings:

[0043] Figure 1 is an overall schematic structural diagram of the conveying mechanism according to an embodiment of the present invention;

[0044] Figure 2 is Figure 1 an enlarged schematic structural diagram of part A of

[0045] Figure 3 is a flowchart of the control method of the conveying mechanism according to an embodiment of the present invention;

[0046] Figure 4 is a flowchart of the control method of the conveying mechanism according to another embodiment of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0047] The following will refer to Figures 1 to 4 to describe the conveying mechanism and its control method of the vertical medicine box packaging equipment according to the embodiments of the present invention. In the description of this embodiment, it should be understood that the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include at least one of such features, that is, including one or more of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined. When a certain feature "includes or contains" a certain or certain features it covers, unless otherwise specifically described, this indicates that other features are not excluded and other features may be further included.

[0048] Unless otherwise clearly defined or limited, terms such as "set", "install", "connect", "link", "fix", "couple", etc. should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or integrated; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two components or the interaction relationship between two components, unless otherwise clearly defined. Those of ordinary skill in the art should be able to understand the specific meanings of the above terms in the present invention according to specific circumstances.

[0049] In addition, in the description of this embodiment, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through additional features therebetween. That is, in the description of this embodiment, the first feature being "above", "over", and "on top of" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "beneath", or "under" the second feature may be that the first feature is directly below or obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0050] In the description of this embodiment, the description referring to terms such as "one embodiment", "some embodiments", "schematic embodiments", "examples", "specific examples", or "some examples", etc. means that the specific features, structures, materials, or characteristics described in connection with that embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic descriptions of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in a suitable manner in any one or more embodiments or examples.

[0051] As Figure 1 shown and referring to Figure 2 , an embodiment of the present invention provides a conveying mechanism for a vertical medicine box packaging device. The vertical medicine box packaging device includes a pill loading station 1, a capping station 2, and a hot melt station 3 arranged in sequence. A first conveying mechanism is connected between the pill loading station 1 and the capping station 2, and a second conveying mechanism is connected between the capping station 2 and the hot melt station 3. After the vertical medicine box is loaded with pills at the pill loading station 1, it is conveyed from the pill loading station 1 to the capping station 2 through the first conveying mechanism for capping. After the vertical medicine box is capped, it is conveyed to the hot melt station 3 through the second conveying mechanism, and a labeling operation is performed on the side wall of the vertical medicine box.

[0052] The first conveying mechanism includes a first main conveyor belt 11 and a buffer conveying platform. The first main conveyor belt 11 is connected between the shot loading station 1 and the capping station 2. The buffer conveying platform is located on one side of the first main conveyor belt 11, and a guiding inlet 121 and a guiding outlet 122 for connecting the first main conveyor belt 11 are respectively formed at both ends of the first main conveyor belt 11.

[0053] The buffer conveying platform includes at least two coplanar and parallel conveyor belts 15 arranged alternately in the bandwidth direction, and the conveying directions of two adjacent conveyor belts 15 are opposite to each other. The buffer conveying platform further includes a surrounding track above the conveyor belts 15. The surrounding track forms an interface part communicating with the guiding inlet 121 and the guiding outlet 122, an arc-shaped channel 17 arc-shapedly connecting between the ends of two adjacent conveyor belts 15, and a straight channel 16 parallel to the conveyor belts 15 and connecting between the interface part and the arc-shaped channel 17 or between two arc-shaped channels 17. The surrounding track is integrally in a snake-shaped structure. The vertical medicine box is conveyed forward along the straight channel 16 on the conveyor belt 15 and moves onto the adjacent conveyor belt 15 by relying on the conveyor belt 15 and the surrounding track at the arc-shaped track.

[0054] An unloading opening 18 communicating with the arc-shaped channel 17 and close to the guiding inlet 121 is formed on the outer circle of the surrounding track. A guiding edge 19 for preventing the vertical medicine box is formed on the upper side of the unloading opening 18 to prompt the tilted vertical medicine box to be exposed from the unloading opening 18.

[0055] In the embodiment of the present invention, under normal circumstances, the vertical medicine box enters from the guiding inlet 121 and is conveyed out from the guiding outlet 122 under the action of the conveyor belt 15 and the surrounding track. When the vertical medicine box is tilted, the tilted vertical medicine box is exposed from the unloading opening 18 under the action of the conveyor belt 15 and drops from the conveyor belt 15, solving the problem that the tilted vertical medicine box is easy to block the conveying channel at the arc-shaped channel, and achieving the purpose of improving the production operation efficiency.

[0056] Furthermore, a guiding edge 19 for preventing the vertical medicine box is formed on the upper side of the unloading opening 18, and the non-tilted vertical medicine box can be conveyed backward through the guiding edge 19 to prevent the non-tilted vertical medicine box from being exposed from the unloading opening 18 either.

[0057] In some embodiments of the present invention, such as Figure 1As shown in the figure, a box pushing mechanism 13 is provided at the inlet 121. The box pushing mechanism 13 includes a first electric push rod and a box pushing plate. The first electric push rod is fixed to the side wall of the mounting frame of the first main conveyor belt 11 through a mounting plate. The box pushing plate is arranged at the output end of the first electric push rod, and the output end of the first electric push rod faces the inlet 121 horizontally. The vertical medicine box is pushed from the first main conveyor belt 11 into the buffer platform 12 through the box pushing mechanism 13. A box taking mechanism 14 is provided at the outlet 122. The box taking mechanism 14 is a suction cup type manipulator structure, and the vertical medicine box is lifted from the buffer platform 12 to the first main conveyor belt 11 through the box taking mechanism 14.

[0058] In some embodiments of the present invention, as Figure 1 shown, the discharge opening 18 is opposite to the straight channel 16 near the inlet 121, and the opening width of the discharge opening 18 is greater than the width of the straight channel 16. And, a flexible tongue 4 is connected to the side of the discharge opening 18 away from the inlet 121. The tongue 4 and the edge of the discharge opening 18 enclose a discharge window smaller than the width of the straight channel 16. For example, the tongue 4 is a cardboard or a metal sheet.

[0059] In this example of the present invention, during the conveying process, some of the vertical medicine boxes will tilt and lean against the side wall of the arc channel 17. The tilted medicine boxes will not cause blockage of the conveying channel, but will also be exposed from the discharge opening 18. Therefore, a flexible tongue 4 is connected to the side of the discharge opening 18 away from the inlet 121. When the tilted vertical medicine box abuts against the tongue 4, the tongue 4 will undergo a large deformation. At this time, the tongue 4 is moved away to expose the tilted vertical medicine box. When the tilted vertical medicine box abuts against the tongue 4, the deformation of the tongue 4 is small. At this time, the tongue 4 does not need to be moved away, and the width of the discharge window is smaller than the width of the vertical medicine box, so that the tilted vertical medicine box cannot be exposed through the discharge window and will continue to be conveyed forward. The provided tongue 4 can prevent the tilted vertical medicine box from being exposed from the discharge opening 18 and falling from the conveyor belt 15, while allowing the tilted vertical medicine box to be exposed from the discharge opening 18 and fall from the conveyor belt 15.

[0060] In some embodiments of the present invention, as Figure 1 and Figure 2 shown, the conveying mechanism further includes a telescopic driving mechanism connected to the tongue 4 and a strain sensor 53. The telescopic driving mechanism is configured to drive the tongue 4 to expand and contract in the discharge opening 18, and the strain sensor 53 is configured to detect the deformation amount of the tongue 4 to control the expansion and contraction of the tongue 4 according to the deformation amount.

[0061] In this embodiment of the present invention, the strain sensor 53 senses the amount of deformation of the tongue piece 4 and transmits the signal to the telescopic driving mechanism. The telescopic driving mechanism drives the tongue piece 4 to telescopically move within the unloading opening 18, so as to achieve the effect of exposing the toppled vertical medicine box from the unloading opening 18 and shielding the inclined vertical medicine box. By automatically detecting the amount of deformation of the tongue piece 4 and automatically controlling the telescopic movement of the tongue piece 4, the control of exposing the toppled medicine box and shielding the inclined medicine box becomes more automated, saving time and effort.

[0062] In some embodiments of the present invention, as Figure 1 shown, the telescopic driving mechanism is a cylinder 51. The cylinder 51 is fixedly connected above one side of the unloading opening 18 through a fixing plate 52, and the fixing plate 52 is arranged on the side wall of the arc-shaped channel 17. The output end of the cylinder 51 is fixedly connected to the side wall of the tongue piece 4. The output end of the cylinder 51 is horizontally arranged and faces the unloading opening 18. The structure of the cylinder 51 is simple and the cost is relatively low. Of course, the telescopic driving mechanism can also be a hydraulic cylinder or a linear motor.

[0063] In some embodiments of the present invention, as Figure 1 shown, the second conveying mechanism includes a second main conveyor belt 21 and a sorting mechanism. The second main conveyor belt 21 is configured to convey vertical medicine boxes between the capping station 2 and the hot-melt station 3. The sorting mechanism is located at one end of the second main conveyor belt 21 close to the capping station 2. The sorting mechanism includes a defective product bin 22 and a pushing mechanism that are distributed oppositely on both sides of the second main conveyor belt 21. The top of the defective product bin 22 is open and lower than the belt surface of the second main conveyor belt 21. The pushing mechanism includes a detection probe 23 and a pneumatic push rod 24 that are arranged in sequence along the transmission direction of the second main conveyor belt 21. The detection probe 23 is configured to detect the height of the pills in the vertical medicine box, and the pneumatic push rod 24 is configured to push the vertical medicine box on the second main conveyor belt 21 into the defective product bin 22.

[0064] In this embodiment of the present invention, the detection probe 23 can judge the height of the pills in the vertical medicine box, determine the vertical medicine box with the pill height lower than the set height as unqualified, and transmit the signal to the pneumatic push rod 24. The pneumatic push rod 24 pushes the unqualified vertical medicine box into the defective product bin 22 to ensure the quality of the finished product. In this embodiment, the whole process adopts automatic detection and sorting, which is relatively intelligent and has a high production efficiency.

[0065] In some embodiments of the present invention, the detection probe 23 is an ultrasonic sensor. The ultrasonic sensor judges whether the height of the pills in the medicine box reaches the standard according to the received reflection signal. The transmitting end of the ultrasonic sensor is aligned with the set height of the pills on the medicine box. When the height of the pills in the medicine box is lower than the set height, the reflection signal received by the ultrasonic sensor is relatively strong. When the height of the pills in the medicine box is not lower than the set height, the reflection signal received by the ultrasonic sensor is relatively weak.

[0066] In some embodiments of the present invention, as Figure 1 shown, the second main conveyor belt 21 includes a rear section 211 of the capping station, a front section 212 of the hot-melting station, and a dislocation track 213. The rear section 211 of the capping station is a conveyor belt structure and extends backward and is exposed, prompting the vertical medicine box to be conveyed backward. The front section 212 of the hot-melting station is a conveyor belt structure and extends and is exposed from the front section. The front section 212 of the hot-melting station and the rear section 211 of the capping station are arranged staggeredly left and right, for receiving the vertical medicine box sent out from the rear section 211 of the capping station and conveying it backward.

[0067] The dislocation track 213 forms a front section passage arranged in parallel on the rear section 211 of the capping station and a rear section passage arranged in parallel on the front section 212 of the hot-melting station. The front section passage is spaced in front of the rear section passage, and there is an arc-shaped transition connection between the rear end of the front section passage and the front section of the rear section passage to an inclined diagonal passage.

[0068] In this embodiment of the present invention, in order to reduce the occupied space of the equipment, the conveyor belts at the junction of the capping station 2 and the hot-melting station 3 are arranged side by side and staggeredly, and by setting the dislocation track 213, the vertical medicine box is conveyed from the capping station 2 to the hot-melting station 3 along the dislocation track 213, and the structure is relatively simple.

[0069] In some embodiments of the present invention, as Figure 1 shown, the hot-melting station 3 includes an operation conveyor belt 7 and a strip-shaped track 6. The operation conveyor belt 7 includes the front section 212 of the hot-melting station and an operation conveying section integrally arranged behind it, prompting the vertical medicine box to be conveyed through the hot-melting station 3. The strip-shaped track 6 is connected to one side of the rear end of the dislocation track 213 away from the rear section 211 of the capping station.

[0070] In this embodiment of the present invention, when performing a labeling operation on the vertical medicine box, a certain thrust will be applied to the labeling side of the vertical medicine box, and the thrust can be manual or machine. By setting the strip-shaped track 6, when labeling, the vertical medicine box abuts against the strip-shaped track 6, facilitating the labeling operation and at the same time playing a role in preventing the vertical medicine box from tipping over or falling off the operation conveyor belt 7.

[0071] Furthermore, the side of the operation conveyor belt 7 close to the rear section 211 of the capping station and near the strip-shaped track 6 is an open space without obstruction, facilitating labeling.

[0072] As Figure 3 shown, an embodiment of the present invention provides a control method for a conveying mechanism in some of the above embodiments, including:

[0073] Obtaining the deformation amplitude of the tongue piece 4;

[0074] In response to the deformation amplitude of the tongue piece 4 being not lower than the first amplitude threshold, controlling the telescopic drive mechanism to pull out the tongue piece 4 from the unloading opening 18 by a set distance.

[0075] In this embodiment of the present invention, by setting a first amplitude threshold, the first amplitude threshold is the minimum deformation amount when the inverted vertical medicine box abuts against the tongue piece 4. When the deformation amount of the tongue piece 4 is not lower than the first amplitude threshold, it indicates that a vertical medicine box has been inverted. The telescopic drive mechanism will control the tongue piece 4 to be pulled out of the unloading opening 18, so that the inverted vertical medicine box is exposed from the unloading opening 18. Through the first amplitude threshold, it is possible to accurately detect whether there is an inverted vertical medicine box, thereby effectively preventing the conveying channel from being blocked.

[0076] In some embodiments of the present invention, the control method further includes, after controlling the telescopic drive mechanism to pull the tongue piece 4 out of the unloading opening 18 by a set distance, further including:

[0077] In response to the tongue piece 4 staying for a first set time after being pulled out by the set distance, controlling the telescopic drive mechanism to prompt the tongue piece 4 to return to the starting position;

[0078] In response to the deformation amplitude of the tongue piece 4 not being lower than a second amplitude threshold before the tongue piece 4 reaches the starting position, controlling the telescopic drive mechanism to pull the tongue piece 4 out of the unloading opening 18.

[0079] In this example of the present invention, after the tongue piece 4 is pulled out for the first set time, the tongue piece 4 is controlled to return to the starting position to detect again whether there is an inverted vertical medicine box. The set first set time is to make the inverted medicine box completely exposed from the unloading opening 18.

[0080] During the process of the tongue piece 4 returning to the starting position, if the tongue piece 4 deforms again, it is because there are continuously inverted vertical medicine boxes. When the deformation amount of the tongue piece 4 is not lower than the second amplitude threshold, the second amplitude threshold is the deformation amount that occurs when the tongue piece 4 abuts against another inverted vertical medicine box during the process of returning to the starting position. The telescopic drive mechanism controls the tongue piece 4 to be pulled out of the unloading opening 18 again, and controls the tongue piece 4 to return to the starting position after being pulled out for the first set time, and repeats the cycle until the tongue piece 4 returns to the starting position. By setting the second amplitude threshold, the tongue piece 4 can also detect an inverted vertical medicine box before reaching the starting position and expose it from the unloading opening 18, so as to comprehensively and accurately prevent the inverted vertical medicine box from blocking the conveyor belt 15.

[0081] As Figure 4 shown, the embodiment of the present invention also provides a control method for a conveying mechanism, including:

[0082] Detecting the height of the pills in the vertical medicine box;

[0083] In response to the pill height not being higher than the set material level, controlling the pneumatic push rod 24 to push outwards to push the vertical medicine box into the defective product bin 22 and count it;

[0084] In response to the number of times the pneumatic push rod 24 is pushed out within the second set time being not less than the first set threshold, control the first conveying mechanism to stop.

[0085] In this example of the present invention, a vertical medicine box with a pill height not higher than the set material level is pushed into the defective product bin 22 and counted once. When the number of times the pneumatic push rod 24 is pushed out within the second set time is not less than the first set threshold, control the first conveying mechanism to stop. When detecting defective products, if the number of defective products appears too many times within a certain time, it may be that the conveying mechanism fails, and it can be stopped for inspection, which is beneficial to improving the product quality, controlling the finished product rate, and improving the production efficiency.

[0086] In some embodiments of the present invention, the control method further includes:

[0087] In response to the number of times the pneumatic push rod 24 is pushed out within the second set time being not less than the second set threshold, and the conveying speed of the first conveying mechanism being not lower than the speed threshold, then control the first conveying mechanism to decelerate;

[0088] Judge whether the first conveying mechanism decelerates within the second set time,

[0089] If so, use the deceleration moment of the first conveying mechanism as the starting moment of the second set time, and re-time;

[0090] Wherein, the first set threshold is greater than the second set threshold.

[0091] In this embodiment of the present invention, when the number of times the pneumatic push rod 24 is pushed out within the second set time is not less than the second set threshold but less than the first set threshold, and the conveying speed of the first conveying mechanism is not lower than the speed threshold, the defective product rate can be reduced by reducing the conveying speed of the conveyor belt of the first conveying mechanism, without the need for stopping for inspection, thus improving the production efficiency.

[0092] Furthermore, judge whether the first conveying mechanism decelerates. If so, use the deceleration moment of the first conveying mechanism as the starting moment of the second set time, and re-detect the number of times the pneumatic push rod 24 is pushed out and the conveying speed of the first conveying mechanism within the second set time, to ensure the smooth progress of production.

[0093] So far, those skilled in the art should recognize that although multiple exemplary embodiments of the present invention have been shown and described in detail herein, still, many other variations or modifications that conform to the principles of the present invention can be directly determined or derived based on the content disclosed in the present invention without departing from the spirit and scope of the present invention. Therefore, the scope of the present invention should be understood and determined to cover all these other variations or modifications.

Claims

1. A conveying mechanism of a vertical medicine box packaging device, the vertical medicine box packaging device includes a pill filling station, a capping station and a hot melting station arranged in sequence, a first conveying mechanism is connected between the pill filling station and the capping station, and a second conveying mechanism is connected between the capping station and the hot melting station, characterized in that, The first conveying mechanism includes: A first main conveyor belt configured to be connected between the pill loading station and the capping station; A buffer conveying platform on one side of the first main conveyor belt, forming an inlet and an outlet respectively connecting the two ends of the first main conveyor belt; the buffer conveying platform includes at least two co-planar and parallel conveyor belts arranged alternately in the bandwidth direction, and the conveying directions of two adjacent conveyor belts are opposite to each other; the buffer conveying platform further includes an enclosing track above the conveyor belts, the enclosing track forms an interface portion communicating with the inlet and the outlet, an arc-shaped channel arc-shapedly connecting between the ends of two adjacent conveyor belts, and a straight channel parallel to the conveyor belts and connecting between the interface portion and the arc-shaped channel or between two arc-shaped channels; and, An unloading opening is formed on the outer circle of the enclosing track and communicates with the arc-shaped channel and is close to the inlet, and a guiding edge for preventing the vertical medicine box is formed on the upper side of the unloading opening to prompt the dumped vertical medicine box to be exposed from the unloading opening; The unloading opening is opposite to the straight channel close to the inlet, and the opening width of the unloading opening is greater than the width of the straight channel; and, a flexible tongue is connected to the side of the unloading opening away from the inlet, and the tongue and the edge of the unloading opening enclose an unloading window smaller than the width of the straight channel; The conveying mechanism further includes a telescopic driving mechanism and a strain sensor connected to the tongue, the telescopic driving mechanism is configured to drive the tongue to stretch and retract in the unloading opening, and the strain sensor is configured to detect the deformation amount of the tongue to control the stretching and retracting of the tongue according to the deformation amount.

2. The conveying mechanism according to claim 1, wherein The second conveying mechanism includes: A second main conveyor belt configured to convey the vertical medicine box between the capping station and the hot melting station; A sorting mechanism located at one end of the second main conveyor belt close to the capping station, the sorting mechanism includes a defective product bin and a pushing mechanism distributed oppositely on both sides of the second main conveyor belt, the top of the defective product bin is open and lower than the belt surface of the second main conveyor belt, the pushing mechanism includes a detection probe and a pneumatic push rod arranged in sequence along the conveying direction of the second main conveyor belt, the detection probe is configured to detect the height of the pills in the vertical medicine box, and the pneumatic push rod is configured to push the vertical medicine box on the second main conveyor belt into the defective product bin.

3. The conveying mechanism according to claim 2, wherein The second main conveyor belt includes: The post-capping station section, which is a conveyor belt structure and extends backward and is exposed, to prompt the vertical medicine box to be conveyed backward; The pre-hot melting station section, which is a conveyor belt structure and extends and is exposed from the front section, the pre-hot melting station section is arranged in a left-right staggered manner with the post-capping station section, to receive the vertical medicine box sent out from the post-capping station section and convey it backward; The misaligned track forms a front-section channel that is arranged in parallel at the rear section of the capping station and a rear-section channel that is arranged in parallel at the front section of the hot-melt station. The front-section channel is spaced in front of the rear-section channel and is arc-transitionally connected to an inclined diagonal channel between the rear end of the front-section channel and the front section of the rear-section channel.

4. The conveying mechanism according to claim 3, wherein The hot-melt station includes: An operation conveyor belt, which includes the front section of the hot-melt station and an integrally arranged operation conveying section behind it, for promoting the conveyance of the vertical medicine box through the hot-melt station; A strip-shaped track, which is connected to one side of the rear end of the misaligned track away from the rear section of the capping station; and The side of the operation conveyor belt close to the rear section of the capping station and near the strip-shaped track is an open space.

5. A control method for the conveying mechanism as described in claim 1, characterized in that, Includes: Obtaining the deformation amplitude of the tongue piece; In response to the deformation amplitude of the tongue piece being not less than the first amplitude threshold, controlling the telescopic driving mechanism to pull out the tongue piece from the unloading opening by a set distance.

6. The control method according to claim 5, wherein After controlling the telescopic driving mechanism to pull out the tongue piece from the unloading opening by a set distance, it further includes: In response to the tongue piece staying for a first set time after being pulled out by the set distance, controlling the telescopic driving mechanism to prompt the tongue piece to return to the starting position; In response to the deformation amplitude of the tongue piece being not less than the second amplitude threshold before the tongue piece reaches the starting position, controlling the telescopic driving mechanism to pull out the tongue piece from the unloading opening.

7. A control method for the conveying mechanism as described in claim 2, characterized in that, Includes: Detecting the height of the pills in the vertical medicine box; In response to the pill height being not higher than the set material level, controlling the pneumatic push rod to push outwards to push the vertical medicine box into the defective product bin and count it; In response to the number of times the pneumatic push rod is pushed out being not less than the first set threshold within the second set time, controlling the first conveying mechanism to stop.

8. The control method according to claim 7, characterized in that The control method further includes: In response to the number of times the pneumatic push rod is pushed out being not less than the second set threshold within the second set time, and the conveying speed of the first conveying mechanism being not less than the speed threshold; then controlling the first conveying mechanism to decelerate; Judging whether the first conveying mechanism decelerates within the second set time, If so, using the deceleration moment of the first conveying mechanism as the starting moment of the second set time to re-time; Wherein, the first set threshold is greater than the second set threshold.

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