Ton bag packaging machine and control system thereof

Abstract

The invention relates to the technical field of agricultural machinery, in particular to a ton bag packaging machine and a control system thereof, and the system comprises an information acquisition module which is used for acquiring material information, equipment operation information and ton bag information; the grade dividing module is used for dividing material volume grades; the layering analysis module is used for analyzing the layering thickness of the material; the performance evaluation module is used for evaluating the performance of the ton bag; the fall analysis module is used for analyzing the minimum fall of the materials; the optimization module is used for optimizing the analysis process of the minimum fall of the materials according to the obtained material density and the response time of the lifting platform; the control module is used for controlling the height of the lifting platform and the conveying speed of the cloth belt; and the damage analysis module is used for adjusting the control process of the height of the lifting platform in the next monitoring period according to the material damage rate obtained in the monitoring period. The material filling uniformity of the ton bag packaging machine is improved, and the packaging efficiency of the ton bag packaging machine is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of agricultural machinery, and in particular to a ton bag packaging machine and a control system thereof. Background Art

[0002] At present, potatoes and other tuber crops are generally packed in bulk using ribbons or ton bags. The ton bags need to be filled manually. During the filling process, manual pouring operations are very arbitrary and can easily cause bumps and scratches during unloading. Damage to the potato skin can cause lesions and rot, reduce quality, and increase production costs.

[0003] Chinese patent publication number CN103274067A discloses a ton bag packaging machine, including a mounting column, a mounting platform is provided on the mounting column, a metering scale is provided on the mounting platform, a weighing platform is provided between the mounting platform and the metering scale, a material bin is provided at the upper end of the metering scale, a plug-in plate type pneumatic grading feeding mechanism is provided at the lower end of the material bin, a weighing bucket is provided at the lower end of the plug-in plate type pneumatic grading feeding mechanism, and the lower end of the weighing bucket is a discharging end, a sealing bag clamping mechanism is provided on the weighing platform, and heavy-duty stretching cylinders are provided at the four corners of the weighing platform, and the output shaft of the heavy-duty stretching cylinder passes through the weighing platform and the mounting platform and is connected to a hook machine The structure is installed on a mounting platform, and an automatic bag-removing hook mechanism is provided under the hook mechanism installation platform; a ton bag blowing machine is provided on one side of the installation platform; the present invention is reasonably designed and can meet the needs of packaging machines with large tonnage and small tonnage packaging at the same time, has strong compatibility, and can adjust the packaging tonnage and capacity of the equipment according to more actual needs to meet actual needs, and at the same time, can have a bag blowing function, and can blow open the bag mouth of the packaging bag well, is easy to operate, saves time and effort, is suitable for production, and improves production efficiency; it can be seen that the ton bag packaging machine cannot achieve uniformity of material filling, and there is a problem of low packaging efficiency of the ton bag packaging machine. Summary of the invention

[0004] To this end, the present invention provides a ton bag packaging machine control system to overcome the problem of low packaging efficiency of the ton bag packaging machine in the prior art.

[0005] To achieve the above object, the present invention provides a control system for a ton bag packaging machine, the system comprising:

[0006] Information acquisition module, used to obtain material information, equipment operation information and ton bag information;

[0007] A grade classification module is used to classify the material volume grades according to the obtained material volume;

[0008] Layered analysis module, used to analyze the layer thickness of materials according to the results of the material volume level division;

[0009] A performance evaluation module, for analyzing the capacity index of a ton bag according to the obtained ton bag capacity, for analyzing the strength index of a ton bag according to the obtained ton bag strength, and for evaluating the performance of the ton bag according to the analysis results of the capacity index of the ton bag and the strength index of the ton bag;

[0010] The drop analysis module is used to analyze the minimum drop of materials based on the analysis results of material layer thickness and the evaluation results of ton bag performance;

[0011] A control module, used to control the height of the lifting platform according to the obtained analysis results of the material surface height and the minimum drop of the material, and also used to control the conveying speed of the cloth belt according to the obtained analysis results of the material lifting platform height and the layer thickness of the material;

[0012] The damage analysis module is used to adjust the control process of the lifting platform height in the next monitoring period according to the damage rate of the material obtained during the monitoring period.

[0013] Furthermore, the layered analysis module analyzes the layered thickness of the material according to the classification result of the material volume level, wherein:

[0014] When the volume level of the material is level one, the layered analysis module sets the layer thickness of the material to H1, and sets H1=h0;

[0015] When the volume level of the material is level 2, the layered analysis module sets the layer thickness of the material to H2, and sets H2=h0+h1×(s0-s1) / s0;

[0016] When the volume level of the material is level three, the layered analysis module sets the layer thickness of the material to H3, and sets H3=h0+h1+h2×(s0-s2) / s2;

[0017] Among them, h0 is the preset layer thickness, h1 is the first preset adjustment thickness, and h2 is the second preset adjustment thickness.

[0018] Furthermore, the performance evaluation module is provided with a ton bag analysis unit and a performance evaluation unit, the ton bag analysis unit is used to compare the acquired ton bag capacity c0 with the preset capacity c1, and analyze the ton bag capacity index according to the comparison result, wherein:

[0019] When c0≤c1, the ton bag analysis unit determines that the capacity of the ton bag is normal, and sets the ton bag capacity index to N1, setting N1=1;

[0020] When c0>c1, the ton bag analysis unit determines that the capacity of the ton bag is abnormal, and sets the ton bag capacity index to N2, setting N2=1-sin[(c0-c1) / (c1+c0)];

[0021] The ton bag analysis unit compares the acquired ton bag strength t0 with the preset strength t1, and analyzes the ton bag strength index according to the comparison result, wherein:

[0022] When t0≤t1, the ton bag analysis unit determines that the strength of the ton bag is abnormal, and sets the ton bag strength index to Q1, setting Q1=1-ln[(t1-t0) / t1+1];

[0023] When t0>t1, the ton bag analysis unit determines that the strength of the ton bag is normal, and sets the ton bag strength index to Q2, setting Q2=1;

[0024] The performance evaluation unit is used to evaluate the performance of the ton bag according to the analysis results of the ton bag capacity index and the ton bag strength index, wherein:

[0025] When w1×Nn+w2×Qq≤A, the performance evaluation unit determines that the performance of the ton bag is abnormal;

[0026] When w1×Nn+w2×Qq>A, the performance evaluation unit determines that the performance of the ton bag is normal;

[0027] Among them, w1 is the capacity weight, w2 is the strength weight, Nn is the analysis result of the ton bag capacity index, n=1,2, Qq is the analysis result of the ton bag strength index, q=1,2, and A is the preset performance index.

[0028] Furthermore, the drop analysis module analyzes the minimum drop of the material according to the analysis results of the material layer thickness and the evaluation results of the ton bag performance, wherein:

[0029] When the performance of the ton bag is normal, if Hh≤H0, the drop analysis module sets the minimum drop of the material to K1, and sets K1=k0; if Hh>H0, the drop analysis module sets the minimum drop of the material to K2, and sets K2=k0×[1-α×(Hh-H0) / H0];

[0030] When the performance of the ton bag is abnormal, if Hh≤H0, the drop analysis module sets the minimum drop of the material to K3, and sets K3=k0×exp(-△A / A); if Hh>H0, the drop analysis module sets the minimum drop of the material to K4, and sets K4=k0×exp(-△A / A)×[1-α×(Hh-H0) / H0];

[0031] Among them, when Kk≤K0, the value of Kk is KO, Kk is the analysis result of the material layer thickness, K0 is the preset drop threshold, k0 is the preset material drop, α is the preset adjustment coefficient, and H0 is the preset thickness threshold.

[0032] Further, an optimization module is used to optimize the analysis process of the minimum drop of the material according to the obtained material density and the response time of the lifting platform; the optimization module includes a first optimization unit and a second optimization unit, the first optimization unit is used to compare the obtained material density j0 with the preset density j1, and optimize the analysis process of the minimum drop of the material according to the comparison result, wherein:

[0033] When j0≤j1, the first optimization unit determines that the material density is normal and does not perform optimization;

[0034] When j0>j1, the first optimization unit determines that the material density is abnormal, and optimizes the analysis process of the minimum material drop, and sets the optimized preset material drop as k0', setting:

[0035] k0'=k0×{1-{exp{sin[(j0-j1) / (j0+j1)]}-1} / 2}.

[0036] Furthermore, the second optimization unit is used to compare the obtained lifting platform response time y0 with the preset response time y1, and perform secondary optimization on the analysis process of the minimum drop of the material according to the comparison result, wherein:

[0037] When y0≤y1, the second optimization unit determines that the response time of the lifting platform is normal and does not perform optimization;

[0038] When y0>y1, the second optimization unit determines that the response time of the lifting platform is abnormal, and performs secondary optimization on the analysis process of the minimum drop of the material, and sets the optimized preset density as y1', setting y1'=y1×[1-β×(y0-y1) / (y0+y1)];

[0039] Among them, β is the preset optimization coefficient.

[0040] Furthermore, the control module is provided with a first control unit and a second control unit, wherein the first control unit is used to control the height of the lifting platform according to the analysis result of the acquired material surface height r0 and the minimum drop of the material, wherein:

[0041] When r1-r0<Kk, the first control unit controls the lifting platform to descend, and sets the descending height to Kk-r1+r0;

[0042] When r1-r0=Kk, the first control unit does not control the lifting platform;

[0043] When r1-r0>Kk, the first control unit controls the lifting platform to rise, and sets the rising height to r1-r0-Kk;

[0044] Among them, r0 is the height of the material belt outlet, Kk is the analysis result of the minimum drop of the material, k = 1, 2, 3, 4.

[0045] Furthermore, the second control unit is used to control the conveying speed of the fabric belt according to the obtained lifting platform height g0 and the layer thickness Hh of the material, wherein:

[0046] When x1×Hh≤r1-g0-Kk<(x1+1)×Hh, the second control unit determines that the material is in the x1th layer of material filling, and controls the conveying speed of the fabric belt to be V, setting V=v0-x1×v1;

[0047] When x1×Hh>r1-g0-Kk or r1-g0-Kk≥(x1+1)×Hh, the second control unit determines that the material is not in the x-th layer of material filling;

[0048] When V≤V0, the value of V is V0, V0 is the preset transmission speed threshold, h=1,2,3, v0 is the preset transmission speed, and v1 is the preset adjustment speed.

[0049] Furthermore, the damage analysis module compares the material damage rate p0 obtained during the monitoring period with the preset damage rate p1, and adjusts the control process of the cloth belt transmission speed in the next monitoring period according to the comparison result, wherein:

[0050] When p0≤p1, the damage analysis module determines that the damage rate of the material in the current monitoring period is normal and does not make any adjustments;

[0051] When p0>p1, the damage analysis module determines that the damage rate of the material in the current monitoring period is abnormal, and adjusts the control process of the cloth belt transmission speed in the next monitoring period, and sets the updated preset adjustment speed to v1', setting:

[0052] v1'=v1×{1-γ×(p0-p1) / (p0+p1)×ln[(p0-p1) / (p0+p1)+2]};

[0053] Among them, γ is the preset adjustment coefficient.

[0054] On the other hand, the present invention also provides a ton bag packaging machine, characterized in that it includes:

[0055] A main frame is used to install functional components. A winch is provided at one end of the main frame. The winch is used to adjust the height of the lifting platform. A lifting platform is provided above the winch. The lifting platform is used to support ton bags. A ton bag hanger is provided above the lifting platform. The ton bag hanger is used to support and fix ton bags. A hydraulic cylinder for moving the cloth belt is provided between the lifting platform and the ton bag hanger. The hydraulic cylinder for moving the cloth belt is used to move the cloth belt left and right. A cloth belt is provided above the end of the main frame opposite to the winch. The cloth belt is used to transport materials. A lifting screen is provided below one end of the cloth belt. The lifting screen is used to lift materials. A power distribution box is provided below one end of the lifting screen. The power distribution box is used to provide power. A controller is provided in the power distribution box. The controller is used to control the height of the lifting platform and the material conveying speed of the cloth belt. A hydraulic station is provided between the main frame and the cloth belt. The hydraulic station is used to provide power.

[0056] Compared with the prior art, the beneficial effects of the present invention are that the grading module improves the accuracy of material density grading by setting a preset density, thereby improving the accuracy of material layer thickness analysis; the stratification analysis module improves the accuracy of material layer thickness analysis by setting a preset layer thickness and a preset adjustment thickness, thereby improving the accuracy of material minimum drop analysis; the performance evaluation module improves the accuracy of ton bag capacity index and ton bag strength index analysis by setting a preset capacity and a preset strength, and improves the accuracy of ton bag performance evaluation by setting a preset weight and a preset performance index, thereby improving the accuracy of material minimum drop analysis; the drop analysis module improves the accuracy of material minimum drop analysis by setting a preset material drop, a preset drop threshold, a preset drop adjustment value, a preset adjustment coefficient and a preset thickness threshold, thereby improving the lifting platform The accuracy of height and cloth belt transmission speed control is improved. The optimization module reduces the influence of excessive material density on the material minimum drop analysis process by setting a preset density, so as to improve the accuracy of material minimum drop analysis. The preset response time and the preset optimization coefficient are set to reduce the influence of too long response time of the lifting platform on the material minimum drop analysis process, so as to improve the accuracy of material minimum drop analysis. The control module improves the accuracy of cloth belt transmission speed control by setting a preset transmission speed threshold, a preset transmission speed and a preset adjustment speed, thereby improving the uniformity of material filling of the ton bag packaging machine and improving the packaging efficiency of the ton bag packaging machine. The damage analysis module improves the accuracy of cloth belt transmission speed control by setting a preset damage rate and a preset adjustment coefficient, thereby improving the uniformity of material filling of the ton bag packaging machine and improving the packaging efficiency of the ton bag packaging machine. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 It is a schematic diagram of the structure of the control system of the ton bag packaging machine in this embodiment.

[0058] Figure 2 Schematic diagram of the structure of the performance evaluation module of this embodiment.

[0059] Figure 3 This is a schematic diagram of the structure of the optimization module in this embodiment.

[0060] Figure 4 Schematic diagram of the structure of the control module of this embodiment.

[0061] Figure 5 It is a structural schematic diagram of the side of the ton bag packaging machine of this embodiment.

[0062] Figure 6 It is a structural schematic diagram of the front side of the ton bag packaging machine of this embodiment.

[0063] Figure 7 It is a structural schematic diagram of the lifting platform of this embodiment.

[0064] Figure 8 It is a structural schematic diagram of the ton bag hanger of this embodiment.

[0065] Fig. 9 Schematic diagram of the structure of the cloth belt in this embodiment.

[0066] Fig.10 It is a structural schematic diagram of the front side of the lifting screen in this embodiment.

[0067] Fig.11 It is a schematic structural diagram of the side surface of the lifting screen in this embodiment. DETAILED DESCRIPTION

[0068] In order to make the objects and advantages of the present invention more clearly understood, the present invention is further described below in conjunction with embodiments; it should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0069] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the protection scope of the present invention.

[0070] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected" and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0071] See also Figure 1As shown, it is a schematic diagram of the structure of the control system of the ton bag packaging machine in this embodiment, and the system includes:

[0072] An information acquisition module is used to acquire material information, equipment operation information and ton bag information; the material information includes material volume and material density; the equipment operation information includes the height of the lifting platform, the height of the material belt discharge port and the response time of the lifting platform; the ton bag information includes the capacity of the ton bag, the strength of the ton bag and the surface height of the material in the ton bag, and the strength of the ton bag is the load capacity of the ton bag; in this embodiment, no specific limitation is made on the acquisition method of material information, equipment operation information and ton bag information, and those skilled in the art can freely set it, as long as the acquisition requirements of material information, equipment operation information and ton bag information are met, wherein the material volume and material density can be acquired by sampling and analysis, the height of the lifting platform, the height of the material belt discharge port and the material surface height can be acquired by a laser rangefinder, and the ground can be used as a height reference, and the response time of the lifting platform, the capacity of the ton bag and the strength of the ton bag can be acquired through interaction; the material in this embodiment is potato;

[0073] A grade classification module, used to classify the material volume grades according to the acquired material volume, and the grade classification module is connected to the information acquisition module;

[0074] A layered analysis module, used to analyze the layered thickness of the material according to the classification result of the material volume level, and the layered analysis module is connected to the level classification module;

[0075] A performance evaluation module, used for analyzing the ton bag capacity index according to the acquired ton bag capacity, and also for analyzing the ton bag strength index according to the acquired ton bag strength, and evaluating the performance of the ton bag according to the analysis results of the ton bag capacity index and the ton bag strength index, the performance evaluation module being connected to the information acquisition module;

[0076] The drop analysis module is used to analyze the minimum drop of the material according to the analysis results of the material layer thickness and the evaluation results of the ton bag performance. The minimum drop of the material is to protect the integrity of the material, avoid damage, reduce dust generation or ensure the normal operation of the process equipment. The minimum drop height allowed when the material is transferred from one height to another. The drop analysis module is connected with the layer analysis module and the performance evaluation module;

[0077] An optimization module, used for optimizing the analysis process of the minimum drop of the material according to the acquired material density and the response time of the lifting platform, and the optimization module is connected with the drop analysis module;

[0078] A control module, used to control the height of the lifting platform according to the obtained analysis results of the material surface height and the minimum drop of the material, and also used to control the conveying speed of the cloth belt according to the obtained analysis results of the material lifting platform height and the layer thickness of the material, and the control module is connected to the drop analysis module;

[0079] The damage analysis module is used to adjust the control process of the lifting platform height in the next monitoring period according to the damage rate of the material obtained during the monitoring period. The damage analysis module is connected to the control module; the damage rate of the material in this embodiment is the ratio of the mass of the damaged material to the mass of the material. In this embodiment, there is no specific limitation on the method for obtaining the material damage rate. Technical personnel in this field can set it freely, and it only needs to meet the requirements for obtaining the material damage rate, wherein the material damage rate can be obtained through interaction; in this embodiment, there is no specific limitation on the setting of the monitoring period, and technical personnel in this field can set it freely, and it only needs to meet the setting requirements of the monitoring period, wherein the monitoring period can be set to 20 days, 30 days, etc.

[0080] See also Figure 2 As shown, it is a schematic diagram of the structure of the performance evaluation module of this embodiment, and the performance evaluation module includes:

[0081] A ton bag analysis unit, used to analyze the ton bag capacity index according to the obtained ton bag capacity, and also used to analyze the ton bag strength index according to the obtained ton bag strength;

[0082] The performance evaluation unit is used to evaluate the performance of the ton bag according to the analysis results of the ton bag capacity index and the ton bag strength index. The performance evaluation unit is connected to the ton bag analysis unit.

[0083] See also Figure 3 As shown, it is a schematic diagram of the structure of the optimization module of this embodiment, and the optimization module includes:

[0084] The first optimization unit is used to optimize the analysis process of the minimum drop of the material according to the obtained material density;

[0085] The second optimization unit is used to perform secondary optimization on the analysis process of the minimum drop of materials according to the acquired lifting platform response time, and the second optimization unit is connected to the first optimization unit.

[0086] See also Figure 4 As shown, it is a schematic diagram of the structure of the control module of this embodiment, and the control module includes:

[0087] A first control unit is used to control the height of the lifting platform according to the analysis result of the obtained material surface height and the minimum drop of the material;

[0088] The second control unit controls the conveying speed of the cloth belt according to the obtained analysis results of the lifting platform height and the layer thickness of the material, and the second control unit is connected to the first control unit.

[0089] Specifically, the ton bag packaging machine control system described in this embodiment is applied to the packaging of potatoes by the ton bag packaging machine. The material density levels are divided and the layer thickness of the material is analyzed according to the division results. The minimum drop of the material is analyzed in combination with the evaluation results of the ton bag performance. The ton bag packaging machine is controlled according to the analysis results of the minimum drop, thereby improving the uniformity of material filling of the ton bag packaging machine and improving the packaging efficiency of the ton bag packaging machine.

[0090] Specifically, the grade classification module compares the obtained material volume s0 with each preset volume, and classifies the material volume grades according to the comparison results, wherein:

[0091] When s0<s1, the grade classification module determines that the material volume grade is level one;

[0092] When s1≤s0≤s2, the grade classification module determines that the material volume grade is level 2;

[0093] When s0>s2, the grade classification module determines that the material volume grade is grade three;

[0094] Wherein, s1 is a first preset volume, s2 is a second preset volume, and s1<s2.

[0095] Specifically, the grading module improves the accuracy of material density grading by setting a preset density, thereby improving the accuracy of material layer thickness analysis, thereby improving the accuracy of material minimum drop analysis, and ultimately improving the uniformity of material filling in the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine. In this embodiment, there is no specific limitation on the setting of the preset density, and technical personnel in this field can set it freely as long as the setting requirements of the preset density are met. Among them, the optimal value of s1 is 50 cubic centimeters, and the optimal value of s2 is 100 cubic centimeters.

[0096] Specifically, the layered analysis module analyzes the layered thickness of the material according to the classification result of the material volume level, wherein:

[0097] When the volume level of the material is level one, the layered analysis module sets the layer thickness of the material to H1, and sets H1=h0;

[0098] When the volume level of the material is level 2, the layered analysis module sets the layer thickness of the material to H2, and sets H2=h0+h1×(s0-s1) / s0;

[0099] When the volume level of the material is level three, the layered analysis module sets the layer thickness of the material to H3, and sets H3=h0+h1+h2×(s0-s2) / s2;

[0100] Among them, h0 is the preset layer thickness, h1 is the first preset adjustment thickness, h2 is the second preset adjustment thickness, and h1<h2.

[0101] Specifically, the stratification analysis module improves the accuracy of material stratification thickness analysis by setting preset stratification thickness and preset adjustment thickness, thereby improving the accuracy of material minimum drop analysis, and ultimately improving the uniformity of material filling of the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine; in this embodiment, there is no specific limitation on the setting of preset stratification thickness and preset adjustment thickness, and technical personnel in this field can set them freely, as long as the setting requirements of preset stratification thickness and preset adjustment thickness are met, among which the best value of h1 is 20 cm, the best value of h2 is 6 cm, and the best value of h2 is 8 cm.

[0102] Specifically, the ton bag analysis unit compares the acquired ton bag capacity c0 with the preset capacity c1, and analyzes the ton bag capacity index according to the comparison result, wherein:

[0103] When c0≤c1, the ton bag analysis unit determines that the capacity of the ton bag is normal, and sets the ton bag capacity index to N1, setting N1=1;

[0104] When c0>c1, the ton bag analysis unit determines that the capacity of the ton bag is abnormal, and sets the ton bag capacity index to N2, setting N2=1-sin[(c0-c1) / (c1+c0)];

[0105] The ton bag analysis unit compares the acquired ton bag strength t0 with the preset strength t1, and analyzes the ton bag strength index according to the comparison result, wherein:

[0106] When t0≤t1, the ton bag analysis unit determines that the strength of the ton bag is abnormal, and sets the ton bag strength index to Q1, setting Q1=1-ln[(t1-t0) / t1+1];

[0107] When t0>t1, the big bag analysis unit determines that the strength of the big bag is normal, and sets the big bag strength index to Q2, setting Q2=1.

[0108] Specifically, the ton bag analysis unit improves the accuracy of the ton bag capacity index and ton bag strength index analysis by setting the preset capacity and preset strength, thereby improving the accuracy of the ton bag performance evaluation, thereby improving the accuracy of the material minimum drop analysis, and ultimately improving the uniformity of material filling of the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine. In this embodiment, there is no specific limitation on the setting of the preset layer thickness and the preset adjustment thickness, and technical personnel in this field can set them freely, as long as the setting requirements of the preset layer thickness and the preset adjustment thickness are met. Among them, the optimal value of c1 is 1.5 cubic meters, and the optimal value of t1 is 1200 kilograms.

[0109] Specifically, the performance evaluation unit evaluates the performance of the ton bag according to the analysis results of the ton bag capacity index and the ton bag strength index, wherein:

[0110] When w1×Nn+w2×Qq≤A, the performance evaluation unit determines that the performance of the ton bag is abnormal;

[0111] When w1×Nn+w2×Qq>A, the performance evaluation unit determines that the performance of the ton bag is normal;

[0112] Among them, w1 is the capacity weight, w2 is the strength weight, Nn is the analysis result of the ton bag capacity index, n=1,2, Qq is the analysis result of the ton bag strength index, q=1,2, A is the preset performance index, 0.6<A<1, w1<w2, w1+w2=1.

[0113] Specifically, the performance evaluation unit improves the accuracy of the ton bag performance evaluation by setting preset weights and preset performance indexes, thereby improving the accuracy of the material minimum drop analysis, and ultimately improving the uniformity of material filling in the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine. In this embodiment, there is no specific limitation on the setting of preset weights and preset performance indexes, and technical personnel in this field can set them freely as long as the setting requirements of the preset weights and preset performance indexes are met. Among them, the optimal value of w1 is 0.4, the optimal value of w2 is 0.6, and the optimal value of A is 0.7.

[0114] Specifically, the drop analysis module analyzes the minimum drop of the material according to the analysis results of the material layer thickness and the evaluation results of the ton bag performance, wherein:

[0115] When the performance of the ton bag is normal, if Hh≤H0, the drop analysis module sets the minimum drop of the material to K1, and sets K1=k0; if Hh>H0, the drop analysis module sets the minimum drop of the material to K2, and sets K2=k0×[1-α×(Hh-H0) / H0];

[0116] When the performance of the ton bag is abnormal, if Hh≤H0, the drop analysis module sets the minimum drop of the material to K3, and sets K3=k0×exp(-△A / A); if Hh>H0, the drop analysis module sets the minimum drop of the material to K4, and sets K4=k0×exp(-△A / A)×[1-α×(Hh-H0) / H0];

[0117] Among them, when Kk≤K0, the value of Kk is KO, Kk is the analysis result of the material layer thickness, K0 is the preset drop threshold, k0 is the preset material drop, α is the preset adjustment coefficient, △A=A-w1×Nn+w2×Qq, and H0 is the preset thickness threshold.

[0118] Specifically, the drop analysis module improves the accuracy of the material minimum drop analysis by setting a preset material drop, a preset drop threshold, a preset drop adjustment value, a preset adjustment coefficient and a preset thickness threshold, thereby improving the accuracy of the control of the lifting platform height and the cloth belt transmission speed, and ultimately improving the uniformity of material filling of the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine; in this embodiment, there is no specific limitation on the setting of the preset material drop, the preset drop threshold, the preset drop adjustment value, the preset adjustment coefficient and the preset thickness threshold, and technical personnel in this field can set them freely, as long as the setting requirements of the preset material drop, the preset drop threshold, the preset drop adjustment value, the preset adjustment coefficient and the preset thickness threshold are met. Among them, the optimal value of K0 is 30 cm, the optimal value of k0 is 50 cm, the optimal value of α is 0.68, and the optimal value of H0 is 25 cm.

[0119] Specifically, the first optimization unit compares the obtained material density j0 with the preset density j1, and optimizes the analysis process of the minimum drop of the material according to the comparison result, wherein:

[0120] When j0≤j1, the first optimization unit determines that the material density is normal and does not perform optimization;

[0121] When j0>j1, the first optimization unit determines that the material density is abnormal, and optimizes the analysis process of the minimum material drop, and sets the optimized preset material drop as k0', setting:

[0122] k0'=k0×{1-{exp{sin[(j0-j1) / (j0+j1)]}-1} / 2}.

[0123] Specifically, the first optimization unit sets a preset density to reduce the impact of excessive material density on the material minimum drop analysis process, so as to improve the accuracy of the material minimum drop analysis, thereby improving the accuracy of the control of the lifting platform height and the cloth belt transmission speed, and ultimately improving the uniformity of material filling in the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine. In this embodiment, the setting of the preset density is not specifically limited, and technical personnel in this field can set it freely, as long as the setting requirements of the preset density are met. Among them, the optimal value of j1 is 1.1 g / cubic centimeter.

[0124] Specifically, the second optimization unit compares the obtained lifting platform response time y0 with the preset response time y1, and performs secondary optimization on the analysis process of the minimum drop of the material according to the comparison result, wherein:

[0125] When y0≤y1, the second optimization unit determines that the response time of the lifting platform is normal and does not perform optimization;

[0126] When y0>y1, the second optimization unit determines that the response time of the lifting platform is abnormal, and performs secondary optimization on the analysis process of the minimum drop of the material, and sets the optimized preset density as y1', setting y1'=y1×[1-β×(y0-y1) / (y0+y1)];

[0127] Wherein, β is a preset optimization coefficient, 0<β<0.7.

[0128] Specifically, the second optimization unit reduces the impact of the long response time of the lifting platform on the material minimum drop analysis process by setting a preset response time and a preset optimization coefficient, so as to improve the accuracy of the material minimum drop analysis, thereby improving the accuracy of the control of the lifting platform height and the cloth belt transmission speed, and ultimately improving the uniformity of material filling of the ton bag packaging machine and the packaging efficiency of the ton bag packaging machine. In this embodiment, there is no specific limitation on the setting of the preset response time and the preset optimization coefficient, and technical personnel in this field can set them freely, as long as the setting requirements of the preset response time and the preset optimization coefficient are met. Among them, the optimal value of y1 is 1.5s, and the optimal value of β is 0.56.

[0129] Specifically, the first control unit controls the height of the lifting platform according to the analysis results of the obtained material surface height r0 and the minimum drop of the material, wherein:

[0130] When r1-r0<Kk, the first control unit controls the lifting platform to descend, and sets the descending height to Kk-r1+r0;

[0131] When r1-r0=Kk, the first control unit does not control the lifting platform;

[0132] When r1-r0>Kk, the first control unit controls the lifting platform to rise, and sets the rising height to r1-r0-Kk;

[0133] Among them, r0 is the height of the material belt outlet, Kk is the analysis result of the minimum drop of the material, k = 1, 2, 3, 4.

[0134] Specifically, the second control unit controls the conveying speed of the fabric belt according to the acquired lifting platform height g0 and the layer thickness Hh of the material, wherein:

[0135] When x1×Hh≤r1-g0-Kk<(x1+1)×Hh, the second control unit determines that the material is in the x1th layer of material filling, and controls the conveying speed of the fabric belt to be V, setting V=v0-x1×v1;

[0136] When x1×Hh>r1-g0-Kk or r1-g0-Kk≥(x1+1)×Hh, the second control unit determines that the material is not in the x-th layer of material filling;

[0137] Among them, when V≤V0, the value of V is V0, V0 is the preset transmission speed threshold, x1 is the solution of the inequality x1×Hh≤r1-g0-Kk<(x1+1)×Hh, h=1,2,3, v0 is the preset transmission speed, and v1 is the preset adjustment speed.

[0138] Specifically, the second control unit improves the accuracy of the control of the cloth belt conveying speed by setting a preset conveying speed threshold, a preset conveying speed and a preset adjustment speed, thereby improving the uniformity of the material filling of the ton bag packaging machine and improving the packaging efficiency of the ton bag packaging machine; in this embodiment, there is no specific limitation on the setting of the preset conveying speed threshold, the preset conveying speed and the preset adjustment speed, and those skilled in the art can set them freely, as long as the setting requirements of the preset conveying speed threshold, the preset conveying speed and the preset adjustment speed are met, among which the best value of v0 is 22m / s, the best value of v1 is 10m / s, and the best value of V0 is 15m / s.

[0139] Specifically, the damage analysis module compares the material damage rate p0 obtained during the monitoring period with the preset damage rate p1, and adjusts the control process of the cloth belt transmission speed in the next monitoring period according to the comparison result, wherein:

[0140] When p0≤p1, the damage analysis module determines that the damage rate of the material in the current monitoring period is normal and does not make any adjustments;

[0141] When p0>p1, the damage analysis module determines that the damage rate of the material in the current monitoring period is abnormal, and adjusts the control process of the cloth belt transmission speed in the next monitoring period, and sets the updated preset adjustment speed to v1', setting:

[0142] v1'=v1×{1-γ×(p0-p1) / (p0+p1)×ln[(p0-p1) / (p0+p1)+2]};

[0143] Wherein, γ is a preset adjustment coefficient, 0.5<γ<0.8.

[0144] Specifically, the damage analysis module improves the accuracy of the control of the cloth belt transmission speed by setting a preset breakage rate and a preset adjustment coefficient, thereby improving the uniformity of material filling of the ton bag packaging machine and improving the packaging efficiency of the ton bag packaging machine; in this embodiment, there is no specific limitation on the setting of the preset breakage rate and the preset adjustment coefficient, and technical personnel in this field can set them freely, as long as the setting requirements of the preset breakage rate and the preset adjustment coefficient are met, among which the optimal value of p1 is 0.08, and the optimal value of γ is 0.73.

[0145] See also Figure 5-6 As shown, the ton bag packaging machine of this embodiment includes:

[0146] A main frame (1) is used to install functional components such as a lifting platform (3) and a lifting screen (5). A winch (2) is provided at one end of the main frame. The winch (2) is used to adjust the height of the lifting platform (3). A lifting platform (3) is provided above the winch (2). The lifting platform (3) is used to support ton bags. A ton bag hanger (4) is provided above the lifting platform (3). The ton bag hanger (4) is used to support and fix the ton bags. A fabric belt moving hydraulic cylinder (7) is provided between the lifting platform (3) and the ton bag hanger (4). The fabric belt moving hydraulic cylinder (7) is used to move the fabric belt (6) left and right. The main frame (1) and the winch are connected to each other. (2) A cloth belt (6) is provided above the opposite end, and the cloth belt (6) is used to convey materials. A lifting screen (5) is provided below one end of the cloth belt (6), and the lifting screen (5) is used to lift materials. A power distribution box (9) is provided below one end of the lifting screen (5), and the power distribution box (9) is used to provide power. A controller (not shown in the figure) is also provided in the power distribution box (9), and the controller is used to control the height of the lifting platform (3) and the material conveying speed of the cloth belt (6). A hydraulic station (8) is provided between the main frame (1) and the cloth belt (6), and the hydraulic station (8) is used to provide power.

[0147] See also Figure 7 As shown, it is a schematic diagram of the structure of the lifting platform of this embodiment, and the lifting platform includes:

[0148] A lifting platform (31) is used to support ton bags. A pulley mounting plate (32) is provided at one end of the lifting platform (31). The pulley mounting plate (32) is used to mount a pulley (33) and a positioning wheel (34). A pulley (33) is provided below the pulley mounting plate (32). The pulley (33) is used to ensure stable operation of the lifting platform. A positioning wheel (34) is provided below the pulley (33). The positioning wheel (34) is used to ensure stable operation of the lifting platform.

[0149] See also Figure 8 As shown, it is a schematic diagram of the structure of the ton bag hanger of this embodiment, and the ton bag hanger includes:

[0150] The ton bag rack rotating shaft (41) is used for installing a bag hanging hook. A bag hanging hook (42) is provided on one side of the ton bag rack rotating shaft (41). The bag hanging hook (42) is used for installing a ton bag hanging ear.

[0151] See also Fig. 9 As shown, it is a schematic diagram of the structure of the cloth belt of this embodiment, and the cloth belt includes:

[0152] A cloth belt main frame (51) is provided with a PVC conveyor belt (55) below the main frame. The PVC conveyor belt (55) is used to convey materials. A driving roller (53) is provided below one end of the PVC conveyor belt (55). The driving roller (53) is used to provide power for the PVC conveyor belt (55). An anti-collision flexible finger comb (56) is provided at one end of the driving roller (53). The anti-collision flexible finger comb (56) is used to protect materials. A cloth belt moving hydraulic cylinder mounting plate (52) is provided below the anti-collision flexible finger comb (56). The cloth belt moving hydraulic cylinder mounting plate (52) is used to install the cloth belt moving hydraulic cylinder. A redirecting roller (54) is provided at the end of the PVC conveyor belt (55) opposite to the driving roller (53). The redirecting roller (54) is used to change the running direction of the PVC conveyor belt (55).

[0153] See also Figure 10-11 As shown, it is a schematic diagram of the structure of the lifting screen of this embodiment, and the lifting screen includes:

[0154] A guide wheel (63) is used to support the lifting screen assembly (66). The lifting screen assembly (66) is provided above the guide wheel (63). The lifting screen assembly (66) is used to protect the material. A coupling (67) is provided on one side of the lifting screen assembly (66). The coupling (67) is used to transmit power. A motor reducer (68) is provided on one side of the coupling (67). The motor reducer (68) is used to provide power to the driving wheel (62). The guide wheel (63) ) is provided with an upper supporting wheel (64) on one side, the upper supporting wheel (64) is used to support the lifting screen assembly (66), a lower supporting wheel (65) is provided above the upper supporting wheel (64), the lower supporting wheel (65) is used to support the lifting screen assembly (66), a transmission shaft (61) is provided on one side of the lower supporting wheel (65), the transmission shaft (61) is used to transmit power, and a driving wheel (62) is provided below the transmission shaft (61), the driving wheel (62) is used to drive the cloth screen to operate.

[0155] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A control system for a ton bag packaging machine, characterized in that: include, Information acquisition module, used to obtain material information, equipment operation information and ton bag information; A grade classification module is used to classify the material volume grades according to the obtained material volume; Layered analysis module, used to analyze the layer thickness of materials according to the results of the material volume level division; A performance evaluation module, for analyzing the capacity index of a ton bag according to the obtained ton bag capacity, for analyzing the strength index of a ton bag according to the obtained ton bag strength, and for evaluating the performance of the ton bag according to the analysis results of the capacity index of the ton bag and the strength index of the ton bag; The drop analysis module is used to analyze the minimum drop of materials based on the analysis results of material layer thickness and the evaluation results of ton bag performance; A control module, used to control the height of the lifting platform according to the obtained analysis results of the material surface height and the minimum drop of the material, and also used to control the conveying speed of the cloth belt according to the obtained analysis results of the material lifting platform height and the layer thickness of the material; The damage analysis module is used to adjust the control process of the lifting platform height in the next monitoring period according to the damage rate of the material obtained during the monitoring period.

2. The control system of the ton bag packaging machine according to claim 1 is characterized in that: The layered analysis module analyzes the layered thickness of the material according to the classification result of the material volume level, wherein: When the volume level of the material is level one, the layered analysis module sets the layer thickness of the material to H1, and sets H1=h0; When the volume level of the material is level 2, the layered analysis module sets the layer thickness of the material to H2, and sets H2=h0+h1×(s0-s1) / s0; When the volume level of the material is level three, the layered analysis module sets the layer thickness of the material to H3, and sets H3=h0+h1+h2×(s0-s2) / s2; Among them, h0 is the preset layer thickness, h1 is the first preset adjustment thickness, and h2 is the second preset adjustment thickness.

3. The control system of the ton bag packaging machine according to claim 2 is characterized in that: The performance evaluation module is provided with a ton bag analysis unit and a performance evaluation unit. The ton bag analysis unit is used to compare the acquired ton bag capacity c0 with the preset capacity c1, and analyze the ton bag capacity index according to the comparison result, wherein: When c0≤c1, the ton bag analysis unit determines that the capacity of the ton bag is normal, and sets the ton bag capacity index to N1, setting N1=1; When c0>c1, the ton bag analysis unit determines that the capacity of the ton bag is abnormal, and sets the ton bag capacity index to N2, setting N2=1-sin[(c0-c1) / (c1+c0)]; The ton bag analysis unit compares the acquired ton bag strength t0 with the preset strength t1, and analyzes the ton bag strength index according to the comparison result, wherein: When t0≤t1, the ton bag analysis unit determines that the strength of the ton bag is abnormal, and sets the ton bag strength index to Q1, setting Q1=1-ln[(t1-t0) / t1+1]; When t0>t1, the ton bag analysis unit determines that the strength of the ton bag is normal, and sets the ton bag strength index to Q2, setting Q2=1; The performance evaluation unit is used to evaluate the performance of the ton bag according to the analysis results of the ton bag capacity index and the ton bag strength index, wherein: When w1×Nn+w2×Qq≤A, the performance evaluation unit determines that the performance of the ton bag is abnormal; When w1×Nn+w2×Qq>A, the performance evaluation unit determines that the performance of the ton bag is normal; Among them, w1 is the capacity weight, w2 is the strength weight, Nn is the analysis result of the ton bag capacity index, n=1,2, Qq is the analysis result of the ton bag strength index, q=1,2, and A is the preset performance index.

4. The control system of the ton bag packaging machine according to claim 3 is characterized in that: The drop analysis module analyzes the minimum drop of the material according to the analysis results of the material layer thickness and the evaluation results of the ton bag performance, where: When the performance of the ton bag is normal, if Hh≤H0, the drop analysis module sets the minimum drop of the material to K1, and sets K1=k0; if Hh>H0, the drop analysis module sets the minimum drop of the material to K2, and sets K2=k0×[1-α×(Hh-H0) / H0]; When the performance of the ton bag is abnormal, if Hh≤H0, the drop analysis module sets the minimum drop of the material to K3, and sets K3=k0×exp(-△A / A); if Hh>H0, the drop analysis module sets the minimum drop of the material to K4, and sets K4=k0×exp(-△A / A)×[1-α×(Hh-H0) / H0]; Among them, when Kk≤K0, the value of Kk is KO, Kk is the analysis result of the material layer thickness, K0 is the preset drop threshold, k0 is the preset material drop, α is the preset adjustment coefficient, and H0 is the preset thickness threshold.

5. The control system of the ton bag packaging machine according to claim 1, characterized in that: It also includes an optimization module, which is used to optimize the analysis process of the minimum drop of the material according to the obtained material density and the response time of the lifting platform; the optimization module includes a first optimization unit and a second optimization unit, the first optimization unit is used to compare the obtained material density j0 with the preset density j1, and optimize the analysis process of the minimum drop of the material according to the comparison result, wherein: When j0≤j1, the first optimization unit determines that the material density is normal and does not perform optimization; When j0>j1, the first optimization unit determines that the material density is abnormal, and optimizes the analysis process of the minimum material drop, and sets the optimized preset material drop as k0', setting: k0'=k0×{1-{exp{sin[(j0-j1) / (j0+j1)]}-1} / 2}.

6. The control system of the ton bag packaging machine according to claim 5, characterized in that: The second optimization unit is used to compare the obtained lifting platform response time y0 with the preset response time y1, and perform secondary optimization on the analysis process of the minimum drop of the material according to the comparison result, wherein: When y0≤y1, the second optimization unit determines that the response time of the lifting platform is normal and does not perform optimization; When y0>y1, the second optimization unit determines that the response time of the lifting platform is abnormal, and performs secondary optimization on the analysis process of the minimum drop of the material, and sets the optimized preset density as y1', setting y1'=y1×[1-β×(y0-y1) / (y0+y1)]; Among them, β is the preset optimization coefficient.

7. The control system of the ton bag packaging machine according to claim 4, characterized in that: The control module is provided with a first control unit and a second control unit, wherein the first control unit is used to control the height of the lifting platform according to the analysis result of the obtained material surface height r0 and the minimum drop of the material, wherein: When r1-r0<Kk, the first control unit controls the lifting platform to descend, and sets the descending height to Kk-r1+r0; When r1-r0=Kk, the first control unit does not control the lifting platform to rise and fall; When r1-r0>Kk, the first control unit controls the lifting platform to rise, and sets the rising height to r1-r0-Kk; Among them, r0 is the height of the cloth belt outlet, Kk is the analysis result of the minimum drop of the material, k = 1, 2, 3, 4.

8. The control system of the ton bag packaging machine according to claim 7, characterized in that: The second control unit is used to control the conveying speed of the fabric belt according to the obtained lifting platform height g0 and the layer thickness Hh of the material, wherein: When x1×Hh≤r1-g0-Kk<(x1+1)×Hh, the second control unit determines that the material is in the x1th layer of material filling, and controls the conveying speed of the fabric belt to be V, setting V=v0-x1×v1; When x1×Hh>r1-g0-Kk or r1-g0-Kk≥(x1+1)×Hh, the second control unit determines that the material is not in the x-th layer of material filling; Among them, when V≤V0, the value of V is V0, V0 is the preset transmission speed threshold, h=1,2,3, v0 is the preset transmission speed, and v1 is the preset adjustment speed.

9. The control system of the ton bag packaging machine according to claim 8, characterized in that: The damage analysis module compares the material damage rate p0 obtained during the monitoring period with the preset damage rate p1, and adjusts the control process of the cloth belt transmission speed in the next monitoring period according to the comparison result, wherein: When p0≤p1, the damage analysis module determines that the damage rate of the material in the current monitoring period is normal and does not make any adjustments; When p0>p1, the damage analysis module determines that the damage rate of the material in the current monitoring period is abnormal, and adjusts the control process of the cloth belt conveying speed in the next monitoring period, and sets the updated preset adjustment speed to v1', setting: v1'=v1×{1-γ×(p0-p1) / (p0+p1)×ln[(p0-p1) / (p0+p1)+2]}; Among them, γ is the preset adjustment coefficient.

10. A ton bag packaging machine, applied to the ton bag packaging machine control system according to any one of claims 1 to 9, characterized in that: include, A main frame is used to install functional components. A winch is provided at one end of the main frame. The winch is used to adjust the height of the lifting platform. A lifting platform is provided above the winch. The lifting platform is used to support ton bags. A ton bag hanger is provided above the lifting platform. The ton bag hanger is used to support and fix ton bags. A hydraulic cylinder for moving the cloth belt is provided between the lifting platform and the ton bag hanger. The hydraulic cylinder for moving the cloth belt is used to move the cloth belt left and right. A cloth belt is provided above the end of the main frame opposite to the winch. The cloth belt is used to transport materials. A lifting screen is provided below one end of the cloth belt. The lifting screen is used to lift materials. A power distribution box is provided below one end of the lifting screen. The power distribution box is used to provide power. A controller is provided in the power distribution box. The controller is used to control the height of the lifting platform and the material conveying speed of the cloth belt. A hydraulic station is provided between the main frame and the cloth belt. The hydraulic station is used to provide power.

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