Automatic leaf screening method

Abstract

The present invention discloses an automatic leaf screening method, comprising the steps of: placing leaves on an automatic feeding device and transporting the leaves to a preset position by the automatic feeding device; weighing the leaves by an automatic weighing device and recording the weight of each leaf as M1, M2, ..., M n ; Screening and judging, judging the blade weight M1, M2...M n Is the weight in M min ‑M max If yes, the blade is transported to the designated storage bin; if not, the blade is returned to step A; grouping is continued to determine whether the remaining blade weight is within the weight range of the storage bin, and the weight within the M min ‑M max The blades between the two are sent to the storage bin with a specified weight range, with each Z blade forming a group. This method saves time and manpower, improves work efficiency, reduces the error rate, and improves the yield rate.

Description

Technical field

[0001] The present invention relates to the field of blades, and in particular to an automatic blade screening method. [Background Technology]

[0002] In order to ensure the reliability of the fan during use, the processed fan blades need to be screened to ensure that the weight difference between any two blades in each group of blades does not exceed △m. In the existing technology, when weighing the blades, the processed blades need to be weighed manually using a scale and the weighed blades are placed in a storage bin of specified specifications. In order to ensure the accuracy of the blade weight, a second weighing is required. Manual weighing not only requires workers to operate, but also wastes a lot of time and reduces the efficiency of weighing and screening. At the same time, due to the influence of subjective consciousness, manual weighing may lead to incorrect blade grouping, resulting in blades with a weight difference greater than △m in the same set of blades, reducing the yield rate, thereby affecting the use effect of the fan and even causing safety accidents.

[0003] Therefore, the present invention is proposed just to solve the above-mentioned technical problems. [Summary of the invention]

[0004] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a method for automatic blade screening, which saves time and manpower, improves work efficiency, and also reduces the error rate and improves the yield rate.

[0005] The present invention is achieved through the following technical solutions:

[0006] A method for automatically screening leaves, setting the range value of leaf weight to M min -M max , set up n storage bins, each storage bin is numbered 1, 2...n, and M min -M max The blades are divided into n intervals in the order of number. The allowable blade weight difference in each interval is ±△m. The blade weight range that can be stored in each storage bin is recorded as m1±△m, m2±△m…m n ±△m,M min =m1-△m,M max =m1+(2n-1)△m, the maximum storage capacity of each storage bin is Z, including the following steps:

[0007] A. Loading: Place the blades on the automatic loading equipment and transport them to the preset position through the automatic loading equipment;

[0008] B. Weighing: Weigh the blades using an automatic weighing device and record the weight of each blade as M1, M2…M n ;

[0009] C. Screening and judging: judging the blade weight M1, M2…M n Is it at weight M? min -M max If yes, the blade is transported to the storage bin; if not, the blade is returned to the step before A;

[0010] D. Grouping, continue to determine which storage bin the weight of the blades transported to the storage bin is within, and group the weight of the blades in step C within the weight range of M. min -M max The blades between them are sent to the storage bin of the specified weight range, with each Z blades forming a group.

[0011] After step D, step E is further provided for placing snow pear paper, with a piece of snow pear paper being placed between every two leaves in each group of leaves.

[0012] After step E, step F of placing cardboard is further provided, in which cardboard is placed on each set of leaves by an automatic card issuing machine.

[0013] After step F, step G is further provided for packaging, in which the packaging film on the outer surface of the blade is edge-sealed and heat-shrunk by a heat shrink packaging machine to complete the packaging.

[0014] After step G, step H is further provided for an automatic stacking process, in which the packaged blades are stacked by an automatic stacking device.

[0015] The m1, m2...m n are the median values ​​of the blade weight range that can be stored in the 1st, 2nd…nth storage bins, and m n =m n-1 +△m(n>1).

[0016] The value range of △m is 0-1.5g.

[0017] The maximum storage capacity Z≥3.

[0018] In step A, the automatic loading equipment includes a feeding mechanism for transporting blades and a lifting mechanism for adjusting the height of the remaining blades after the automatic weighing equipment grabs the blades.

[0019] Compared with the prior art, the present invention has the following advantages:

[0020] 1. When the present invention is used, workers place the processed blades on the automatic loading device. After the blades are placed, the automatic loading device is started and the blades are transported to the preset position. Each blade is weighed by the automatic weighing device, and the weight of the weighed blades is recorded as M1, M2...M nBy judging the weight of each blade, the leaves that meet the conditions are screened out. The leaves that do not meet the weight conditions are sent to the other side by a conveyor belt and collected by workers. For the leaves that meet the conditions, it is judged again which storage bin the blade weight belongs to, and the blade is sent to the corresponding storage bin. When the number of blades in the storage bin reaches the maximum storage capacity Z, the next step can be carried out. The present invention can save workers' time and improve screening efficiency. At the same time, the leaves are weighed by automatic weighing equipment to ensure that the quality of each group of blades does not exceed the specified difference, reduce the error rate, and improve the yield rate.

[0021] 2. The present invention conveys each group of leaves to a heat shrink packaging machine via a conveyor belt. At this time, the leaves are located between the upper and lower layers of packaging film. The packaging film is first edge-sealed and cut by the heat shrink packaging machine, and then heat-shrunk by the shrinking furnace. At this time, the leaves are packaged. The integrated weighing, screening and packaging of the leaves saves time and workers, greatly improving work efficiency.

[0022] 3. When the present invention is in use, the maximum storage capacity Z of the storage bin is pre-set. The maximum storage capacity Z of the storage bin is the number of blades required for a set of fan assemblies. In the present invention, Z≥3, that is, each group of blades is not less than three, which can be adjusted according to actual order requirements. Whenever the number of blades in the storage bin reaches the maximum capacity, the group of blades is transported to the next step through the conveyor belt. The operation is simple, saves time and workers, and improves work efficiency. The operation is performed through a pre-set program, which reduces the error rate and improves the yield rate.

Brief Description of the Drawings

[0023] Figure 1 This is one of the flow diagrams of the present invention;

[0024] Figure 2 This is the second schematic flow chart of the present invention. [Specific implementation method]

[0025] The present invention will be further described below in conjunction with the accompanying drawings:

[0026] like Figure 1 As shown in the figure, a method for automatic leaf screening is used to set the range of leaf weight to M. min -M max g, set up n storage bins, each storage bin is numbered 1, 2...n, and M min -M max g is divided into n intervals in order of number. The allowable blade weight difference in each interval is ±△m. The blade weight range that can be stored in each storage bin is recorded as m1±△mg, m2±△mg…m n ±△mg,M min =m1-△mg,Mmax =m1+(2n-1)△mg, the maximum storage capacity of each storage bin is Z, including the following steps:

[0027] A. Loading: Place the blades on the automatic loading equipment and transport them to the preset position through the automatic loading equipment;

[0028] B. Weighing: Weigh the blades using an automatic weighing device and record the weight of each blade as M1, M2…M n g;

[0029] C. Screening and judging: judging the blade weight M1, M2…M n Is g at weight M? min -M max g, if yes, the blade is transported to the storage bin; if no, the blade is returned to step A;

[0030] D. Grouping, continue to determine which storage bin the weight of the blades transported to the storage bin is within, and group the weight of the blades in step C within the weight range of M. min -M max The blades between g are sent to the storage bin of the specified weight range, and each Z blades form a group.

[0031] When the present invention is used, workers place the processed blades on the automatic loading device. After the blades are placed, the automatic loading device is started and the blades are transported to the preset position. Each blade is weighed by the automatic weighing device, and the weight of the weighed blades is recorded as M1, M2...M n g. By judging the weight of each blade, the leaves that meet the conditions are screened out. The leaves that do not meet the weight conditions are sent to the other side through the conveyor belt and collected by workers. For the leaves that meet the conditions, it is judged again which storage bin the blade weight belongs to, and the blade is sent to the corresponding storage bin. When the number of blades in the storage bin reaches the maximum storage capacity Z, the next step can be carried out. The present invention can save workers' time and improve screening efficiency. At the same time, the leaves are weighed by automatic weighing equipment to ensure that the quality of each group of blades does not exceed the specified difference, reduce the error rate, and improve the yield rate.

[0032] In addition, the storage bin includes two movable rods connected to the work frame and capable of moving in opposite directions. The free ends of the two movable rods are provided with clamping blocks for facilitating the passage of blades and for supporting the blades. A storage space for accommodating the blades is formed between the movable rods and the clamping blocks. A reset member for facilitating the reset of the movable rods is provided between the movable rods and the work frame. When a blade that meets the requirements needs to be placed in the storage bin, the conveyor belt first transports the blade to the bottom of the storage bin, and the pushing mechanism pushes the blade upward. The blade contacts the clamping blocks, causing the movable rods to move to both sides. After the blade enters the storage space formed between the movable rods and the clamping blocks, the elastic reset member between the movable rods and the work frame drives the movable rods back to their initial position and clamps the blades together with the clamping blocks. In order to facilitate the blades to open the movable rods through the clamping blocks, the clamping blocks are arranged in the shape of a right triangle, and the hypotenuses of the two clamping blocks are arranged downwardly relative to each other.

[0033] like Figure 2 As shown, after step D, there is a step E of placing snow pear paper, with a piece of snow pear paper placed between every two leaves in each set of leaves. After the leaves are weighed, for each set of leaves that meet the requirements, a piece of snow pear paper is placed between every two leaves to prevent wear between the leaves.

[0034] like Figure 2 As shown, after step E, there is further provided step F of placing paper jams, in which paper jams are placed on each set of leaves by an automatic card issuing machine. Placing paper jams on the leaves by the automatic card issuing machine can not only prevent the leaves from being scratched, but also can be used as an instruction manual.

[0035] like Figure 2 As shown, after step F, step G is also performed, in which the packaging film on the outer surface of the leaves is edge-sealed and heat-shrunk by a heat shrink packaging machine to complete the packaging. Each group of leaves is transported to the heat shrink packaging machine via a conveyor belt. At this time, the leaves are located between the upper and lower layers of packaging film. The heat shrink packaging machine first seals and cuts the packaging film, and then heat shrinks the packaging film in a shrink oven. At this point, the leaves are packaged. The integrated weighing, screening, and packaging of the leaves saves time and labor, greatly improving work efficiency.

[0036] like Figure 2 As shown, after step G, there is also a step H of automatic stacking process, in which the packaged blades are stacked by automatic stacking equipment. Stacking the packaged blades according to the preset program not only saves workers and reduces their labor intensity, but also saves time and improves work efficiency. In addition, the use of automatic stacking equipment can make the products more compact and neat when stacking, reducing the occupied space and reducing safety hazards.

[0037] The m1, m2...m ng is the median value of the blade weight range that can be stored in the 1st, 2nd...nth storage bins, and m n =m n-1 +△m (n>1). Ensure that the maximum weight difference between any two blades in each storage bin is within 2△mg, thereby ensuring the reliability of the fan group.

[0038] The value range of Δm is 0-1.5g, that is, the weight difference between any two blades in each set of blades ranges from 0-3g, and when the weight difference is 0-2g, the fan using this set of blades has the best effect.

[0039] The maximum storage capacity Z is ≥ 3. When the present invention is in use, the maximum storage capacity Z of the storage bin is pre-set. The maximum storage capacity Z of the storage bin is the number of blades required for a set of fan assemblies. In the present invention, Z ≥ 3, that is, each set of blades must have no fewer than three blades. This can be adjusted based on actual order requirements. Whenever the number of blades in the storage bin reaches the maximum capacity, the set of blades is transported to the next step via a conveyor belt. This simplifies operation, saves time and labor, and improves work efficiency. The pre-set procedure reduces the error rate and improves the yield rate.

[0040] In step A, the automatic loading equipment includes a feeding mechanism for transporting blades and a lifting mechanism for adjusting the height of the remaining blades after the automatic weighing device grabs them. The feeding mechanism delivers the blades to the designated position, and the lifting mechanism then adjusts the blade height. Each time a blade is grabbed by the automatic weighing device, the lifting mechanism rises once, allowing the automatic weighing device to grab another blade for weighing. This makes operation convenient and saves labor.

Claims

1. A method for automatic leaf screening, characterized by: The range value of blade weight is set to Mmin-Mmax, and n storage bins are set. Each storage bin is numbered 1, 2...n in sequence. Mmin-Mmax is evenly divided into n intervals in the order of numbers. The allowable blade weight difference in each interval is ±△m. The blade weight range that can be stored in each storage bin is recorded as m1±△m, m2±△m...mn±△m, Mmin=m1-△m, Mmax=m1+(2n-1)△m, and the value range of △m is 0-1.5g; the maximum storage capacity of each storage bin is Z, and the storage bin includes two movable rods connected to the workbench and capable of back-moving. The free ends of the two movable rods are provided with a blade that is convenient for the blade to pass through and is used to support the blade The clamping block has an accommodating space for accommodating the blades, and a reset piece is provided between the movable rod and the working frame to facilitate the reset of the movable rod. When the blades that meet the conditions need to be placed in the storage bin, the conveyor belt first transports the blades to the bottom of the storage bin, and pushes the blades upward through the pushing mechanism. The blades contact the clamping block and make the movable rod move to both sides. After the blades enter the accommodating space formed between the movable rod and the clamping block, the elastic reset piece between the movable rod and the working frame will drive the movable rod back to the initial position and clamp the blade together with the clamping block. In order to facilitate the blade to open the movable rod through the clamping block, the clamping block is arranged as a right triangle, and the hypotenuses of the two clamping blocks are arranged downward relative to each other, including the following steps: A. Loading: Place the blades on the automatic loading equipment and transport them to the preset position through the automatic loading equipment; B. Weighing: Weigh the blades using an automatic weighing device and record the weight of each blade as M1, M2…Mn; C. Screening and judging whether the blade weights M1, M2, ..., Mn are within the weight range Mmin - Mmax. If so, the blade is transported to the storage bin; if not, the blade is returned to step A. D. Grouping: Continue to determine which storage bin's weight range the blades delivered to are within, and deliver the blades with a weight between Mmin and Mmax in step C to the storage bin within the specified weight range, with each Z blades forming a group; In step A, the automatic loading equipment includes a feeding mechanism for transporting blades and a lifting mechanism for adjusting the height of the remaining blades after the automatic weighing equipment grabs the blades.

2. The automatic leaf screening method according to claim 1, characterized in that: After step D, step E is further provided for placing snow pear paper, with a piece of snow pear paper being placed between every two leaves in each group of leaves.

3. The automatic leaf screening method according to claim 2, characterized in that: After step E, step F of placing cardboard is further provided, in which cardboard is placed on each set of leaves by an automatic card issuing machine.

4. The automatic leaf screening method according to claim 3, characterized in that: After step F, step G is further provided for packaging, in which the packaging film on the outer surface of the blade is edge-sealed and heat-shrunk by a heat shrink packaging machine to complete the packaging.

5. The automatic leaf screening method according to claim 4, characterized in that: After step G, step H is further provided for an automatic stacking process, in which the packaged blades are stacked by an automatic stacking device.

6. The automatic leaf screening method according to claim 1, characterized in that: The m1, m2...mn are respectively the middle values ​​of the weight range of blades that can be stored in the 1st, 2nd...nth storage bins, and mn=mn-1+Δm (n>1).

7. The automatic leaf screening method according to claim 1, characterized in that: The maximum storage capacity Z≥3.

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