Bag making machine and material defect positioning method and device thereof

Abstract

The invention discloses a bag making machine and a material defect positioning method and device thereof, and relates to the technical field of bag making machines. The bag making machine comprises an image collecting device, a feeding mechanism, a storage mechanism and a cutter mechanism, the storage mechanism comprises a floating guide roller rotating along a fixed shaft, and materials are conveyed to the cutter mechanism through the feeding mechanism and the storage mechanism in sequence. The material defect positioning method of the bag making machine comprises the following steps: acquiring material image information at a feeding mechanism in real time based on an image acquisition device; when it is determined that the material at the current feeding mechanism is the defective material according to the image information, the current rotation angle of the fixed shaft is obtained; according to the current rotation angle, the current total length of the materials located between the feeding mechanism and the cutter mechanism is determined; and determining the position of the defective material according to the current total length. Defective materials are accurately positioned, material waste can be prevented, and the reliability of the bag making machine in the production process is improved.

Description

Technical Field

[0001] The embodiments of the present invention relate to the technical field of bag making machines, and in particular to a bag making machine and a material defect locating method and device thereof. Background Art

[0002] Bag making machines play an important role in the packaging industry, and are used to produce various types of bags and packaging materials using materials. In the bag making process, if the materials have defects such as missing prints, knife lines, ink spots, burrs, dirt, holes, foreign objects, mosquitoes and wrinkles in the previous process, the finished bags will be of unqualified quality. Therefore, it is very important to accurately locate the defective materials to ensure that the produced bags meet the quality standards.

[0003] In the prior art, in order to avoid positioning errors of defective materials, the detection station and the rejection station in the bag-making machine are usually set close to each other, but this setting method limits the range of positioning the defective materials. When the detection station and the rejection station in the bag-making machine are far apart, the floating structure device in the bag-making machine will cause the distance between the detection station and the rejection station to change in real time, thereby affecting the precise positioning of the defective materials. Manual screening of defective materials is still required, which seriously limits the degree of automation and efficiency of the production process. Summary of the invention

[0004] The present invention provides a bag making machine and a material defect positioning method and device thereof, so as to realize accurate positioning of defective materials and improve the stability and reliability of the production process of the bag making machine.

[0005] A first aspect of the present invention provides a material defect positioning method for a bag making machine, wherein the bag making machine at least comprises an image acquisition device, a feeding mechanism, a storage mechanism and a cutting mechanism, wherein the image acquisition device is arranged at the feeding mechanism, the storage mechanism is located between the feeding mechanism and the cutting mechanism, the storage mechanism at least comprises a floating guide roller rotating along a fixed axis, and the material is sequentially transmitted to the cutting mechanism through the feeding mechanism and the storage mechanism, and the material defect positioning method for the bag making machine comprises:

[0006] Acquire material image information at the feeding mechanism in real time based on the image acquisition device;

[0007] When it is determined according to the current material image information that the material currently at the feeding mechanism is a defective material, obtaining the current rotation angle of the fixed axis;

[0008] Determining the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft;

[0009] The position of the defective material is determined according to the current total length.

[0010] Optionally, determining the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft includes:

[0011] Determining the current real-time length of the material in the material storage mechanism according to the current rotation angle of the fixed shaft;

[0012] Obtaining a first fixed length of the material between the feeding mechanism and the material storage mechanism, and a second fixed length between the material storage mechanism and the cutting mechanism;

[0013] The current total length of the material is determined according to the first fixed length, the second fixed length and the current real-time length.

[0014] Optionally, the material storage mechanism further comprises a first fixed guide roller and a second fixed guide roller, and the first fixed guide roller, the floating guide roller and the second fixed guide roller are sequentially arranged along the material transmission path;

[0015] Determining the current real-time length of the material in the material storage mechanism according to the current rotation angle of the fixed shaft includes:

[0016] Obtaining a first horizontal distance and a first vertical distance between the center of the first fixed guide roller and the center of the fixed shaft, a second horizontal distance and a second vertical distance between the center of the second fixed guide roller and the center of the fixed shaft, a third horizontal distance between the center of the floating guide roller and the center of the fixed shaft, a first diameter of the first fixed guide roller, a second diameter of the second fixed guide roller, and a third diameter of the floating guide roller;

[0017] The current real-time length of the material in the storage mechanism is determined based on the current rotation angle of the fixed axis, the first horizontal distance, the second horizontal distance, the third horizontal distance, the first vertical distance, the second vertical distance, the first diameter, the second diameter, and the third diameter.

[0018] Optionally, the cutter mechanism is used to cut the material into storage bags of a first preset length;

[0019] Determining the position of the defective material according to the current total length includes:

[0020] Determining a cutting sequence number of the defective material according to the current total length and the first preset length;

[0021] The storage bag to which the defective material belongs is determined according to the cutting sequence number.

[0022] Optionally, the material defect locating method of the bag making machine further includes:

[0023] After determining the defective material, counting the number of cutting times of the cutting mechanism;

[0024] When the number of cuts is equal to the cutting sequence number, it is determined that the storage bag currently being cut includes the defective material, and the storage bag including the defective material is removed.

[0025] Optionally, the bag making machine further comprises a waste rejection mechanism;

[0026] Removing the storage bag containing the defective material comprises:

[0027] The waste rejection mechanism is controlled to reject the storage bag containing the defective material.

[0028] Optionally, the fixed shaft is provided with an absolute value encoder which rotates coaxially with the fixed shaft;

[0029] Get the current rotation angle of the fixed axis, including:

[0030] Obtaining a code value of the absolute value encoder;

[0031] The current rotation angle of the fixed axis is determined according to the encoding value.

[0032] Optionally, after acquiring the material image information at the feeding mechanism in real time based on the image acquisition device, the method further includes:

[0033] Get standard image information of materials;

[0034] According to the current material image information and the standard image information, determining whether the material currently at the feeding mechanism is a defective material;

[0035] If yes, the step of obtaining the current rotation angle of the fixed axis is performed.

[0036] The second aspect of the present invention provides a material defect positioning device for a bag making machine, the bag making machine at least comprises an image acquisition device, a feeding mechanism, a storage mechanism and a cutting mechanism, the image acquisition device is arranged at the feeding mechanism, the storage mechanism is located between the feeding mechanism and the cutting mechanism, the storage mechanism at least comprises a floating guide roller rotating along a fixed axis, the material is sequentially transmitted to the cutting mechanism through the feeding mechanism and the storage mechanism, the material defect positioning device for the bag making machine comprises:

[0037] A graphic information acquisition module, used for acquiring material image information at the feeding mechanism in real time based on the image acquisition device;

[0038] A rotation angle acquisition module, used for acquiring the current rotation angle of the fixed axis when it is determined that the material currently at the feeding mechanism is a defective material according to the current material image information;

[0039] A current total length determination module, used to determine the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft;

[0040] The defective material position determination module is used to determine the position of the defective material according to the current total length.

[0041] A third aspect of the present invention provides a bag making machine, which comprises at least an image acquisition device, a feeding mechanism, a material storage mechanism, a cutting mechanism and a controller;

[0042] The image acquisition device is arranged at the feeding mechanism, the storage mechanism is located between the feeding mechanism and the cutting mechanism, the storage mechanism at least comprises a floating guide roller rotating along a fixed axis, and the material is sequentially transmitted to the cutting mechanism through the feeding mechanism and the storage mechanism;

[0043] The controller is used to execute the material defect locating method of the bag making machine as described above.

[0044] The technical solution of the present invention acquires the material image information at the feeding mechanism in real time based on the image acquisition device, so that the controller in the bag making machine can timely identify the defective material in the material by analyzing the grayscale information and depth information in the material image information, and timely perform the subsequent processing steps. When the material at the current feeding mechanism is determined to be a defective material according to the current material image information, the current rotation angle of the fixed shaft is acquired, so that the displacement of the floating guide roller can be determined according to the current rotation angle of the fixed shaft, so that the floating length of the material in the storage mechanism can be determined, and the current total length of the material between the feeding mechanism and the cutting mechanism can be determined by combining the floating length of the material in the storage mechanism with the fixed length of the material between the feeding mechanism and the cutting mechanism. At the same time, according to the current total length of the material between the feeding mechanism and the cutting mechanism, the actual length of the defective material from the cutting mechanism can be determined, so that in the process of cutting the material by the cutting mechanism, it can be determined whether the cut material is a defective material according to the length of the material cut by the cutting mechanism, and when it is determined that the cut material is a defective material, the defective material can be removed in time, thereby realizing accurate positioning and removal of the defective material, improving the product quality of the bag making machine and reducing the scrap rate; in addition, the accurate removal of defective materials can avoid the waste of normal materials, thereby improving the production efficiency and yield rate of the bag making machine, and improving the stability and reliability of the production process of the bag making machine.

[0045] It should be understood that the contents described in this section are not intended to identify the key or important features of the embodiments of the present invention, nor are they intended to limit the scope of the present invention. Other features of the present invention will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] Figure 1 It is a structural schematic diagram of a bag making machine provided in Embodiment 1 of the present invention;

[0048] Figure 2 It is a structural schematic diagram of a material storage mechanism provided in Embodiment 1 of the present invention;

[0049] Figure 3 It is a schematic flow chart of a material defect location method for a bag making machine provided in the second embodiment of the present invention;

[0050] Figure 4 It is a schematic flow chart of a material defect location method for a bag making machine provided in Embodiment 3 of the present invention;

[0051] Figure 5 It is a schematic flow chart of a material defect location method for a bag making machine provided in a fourth embodiment of the present invention;

[0052] Figure 6 It is a structural schematic diagram of a material defect locating device for a bag making machine provided in a fifth embodiment of the present invention;

[0053] Figure 7 It is a structural schematic diagram of a controller of a bag making machine provided in Example 6 of the present invention. DETAILED DESCRIPTION

[0054] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0055] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchanged where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0056] Embodiment 1

[0057] Figure 1 Schematic diagram of the structure of a bag making machine provided in the first embodiment of the present invention. Figure 1 As shown, the bag making machine at least includes an image acquisition device 1, a feeding mechanism 2, a storage mechanism 3 and a cutter mechanism 4. The image acquisition device 1 is arranged at the feeding mechanism 2, and the storage mechanism 3 is located between the feeding mechanism 2 and the cutter mechanism 4. The storage mechanism 3 at least includes a floating guide roller rotating along a fixed axis, and the material is sequentially transmitted to the cutter mechanism 4 through the feeding mechanism 2 and the storage mechanism 3.

[0058] The image acquisition device 1 can be specifically understood as a device for acquiring image information of a material, and by analyzing and processing the image information acquired by the image acquisition device 1, it can be determined whether the material has defects. Optionally, the image acquisition device 1 may include at least one camera, that is, the image acquisition device 1 may include one or more cameras, and the camera is used to capture an image of the material, and an image processing algorithm is used to detect and locate defective materials in the material.

[0059] The feeding mechanism 2 can be specifically understood as a component responsible for controlling the material transfer to ensure that the material can be smoothly transferred from the feeding mechanism 2 to the cutting mechanism 4 via the storage mechanism 3. Optionally, the feeding mechanism 2 may include a feeding roller, which can stably control the flow of the material to ensure the continuity and efficiency of the bag making machine production process.

[0060] The material storage mechanism 3 can be specifically understood as a component that stores materials and acts as a buffer. The material storage mechanism 3 can cope with possible fluctuations or temporary pauses in the production process of the bag making machine to ensure that the materials can be stably transferred from the feeding mechanism 2 to the cutting mechanism 4. Figure 2As shown, the storage mechanism 3 at least includes a floating guide roller 302 rotating along the fixed axis 301. When the floating guide roller 302 rotates along the fixed axis 301, the material inside the storage mechanism 3 will move accordingly. By adjusting the rotation angle of the floating guide roller 302, the material stacking condition inside the storage mechanism 3 can be adjusted to achieve storage and buffering of the material, thereby improving the production efficiency and stability of the bag making machine.

[0061] The cutting mechanism 4 can be specifically understood as a mechanism for cutting materials into finished storage bags. Optionally, the cutting mechanism 4 can include components such as blades, a knife seat, and a transmission device to achieve precise cutting of materials according to preset size and shape requirements to form finished storage bags.

[0062] Optionally, the bag making machine may further include a waste kicking mechanism 5, which is connected to the rear of the cutter mechanism 4 and is used to remove the storage bag containing defective materials. Exemplarily, the waste kicking mechanism 5 may include components such as a pneumatic device and a transmission device or a manipulator. When it is determined that the storage bag currently cut by the cutter mechanism 4 contains defective materials, the waste kicking mechanism 5 will generate airflow through the pneumatic device to quickly remove the storage bag containing defective materials from the production line. Alternatively, the waste kicking mechanism 5 can quickly and accurately grab and remove the storage bag containing defective materials through the manipulator to ensure the product quality and production fluency of the bag making machine.

[0063] Optionally, the bag making machine may further include a cutter sensing sensor 6, which is located between the material storage mechanism 3 and the cutter mechanism 4. The cutter sensor 6 is used to monitor the position and state of the material to sense the position where the cutter mechanism 4 needs to cut, thereby guiding the cutter mechanism 4 to perform a cutting operation. Through the detection and feedback of the cutter sensor 6, the bag making machine can achieve accurate material cutting.

[0064] Optionally, the bag making machine may further include a material receiving mechanism 7, which is arranged in front of the cutting mechanism 4. Exemplarily, the material receiving mechanism 7 may include components such as a material receiving roller. The material receiving mechanism 7 is used to receive the material transmitted from the material storage mechanism 3 and accurately transmit it to the position of the cutting mechanism 4 so that the cutting mechanism 4 can cut the material, thereby ensuring that the bag making machine realizes a continuous and efficient production process, thereby improving production efficiency and product quality.

[0065] Optionally, an absolute encoder that rotates coaxially with the fixed shaft 301 is also provided on the fixed shaft 301 of the storage mechanism 3. It can be understood that the floating guide roller 302 in the storage mechanism 3 will rotate along the fixed shaft 301 in real time, causing the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4 to change in real time. Therefore, in order to accurately locate the defective material and remove it, it is necessary to determine the current rotation angle of the fixed shaft 301 according to the encoding value of the absolute encoder, so that the current real-time length of the material in the storage mechanism 3 can be determined according to the current rotation angle of the fixed shaft 301, so that the current total length of the material can be determined according to the current real-time length of the material, and the position of the defective material can be determined according to the current total length of the material, so that the storage bag containing the defective material can be removed by accurately controlling the cutting mechanism 4, thereby improving the stability and reliability of the bag making machine production process.

[0066] Optionally, the bag making machine may further include a controller, which is used to execute the material defect positioning method of the bag making machine provided in an embodiment of the present invention. The material positioning defect positioning method may include acquiring material image information at the feeding mechanism 2 in real time based on the image acquisition device 1, and when it is determined that the material at the current feeding mechanism 2 is a defective material based on the current material image information, acquiring the current rotation angle of the fixed axis 301, and determining the current total length of the material located between the feeding mechanism 2 and the cutting mechanism 4 based on the current rotation angle of the fixed axis 301, and determining the position of the defective material based on the current total length, and based on the position of the defective material, when the storage bag currently cut by the cutting mechanism 4 includes defective materials, controlling the waste kicking mechanism 5 to remove the storage bag including the defective material.

[0067] It can be understood that the controller in the bag making machine can execute the material defect location method for the bag making machine provided in the embodiment of the present invention, and has functional modules and beneficial effects corresponding to the execution method. For technical details not described in detail in this embodiment, please refer to the material defect location method for the bag making machine described in the embodiment below.

[0068] Embodiment 2

[0069] Figure 3 : is a flow chart of a material defect location method for a bag making machine provided by the second embodiment of the present invention. This embodiment is applicable to the situation of locating material defects in the production process of the bag making machine. The bag making machine includes a controller. The method can be executed by a material defect location device of the bag making machine. The device can be implemented by software and / or hardware and can generally be integrated in the controller. Figure 1 and Figure 3 As shown, the material defect positioning method of the bag making machine may include:

[0070] S101. Acquire material image information at a feeding mechanism in real time based on an image acquisition device.

[0071] The image acquisition device 1 may include one or more cameras. Specifically, the image of the material at the feeding mechanism 2 is captured by the camera to obtain the image information of the material at the feeding mechanism 2 in real time. The camera may continuously capture multiple images to ensure full coverage of the material area at the feeding mechanism 2. After the image acquisition device 1 completes the capturing, the material image information will be sent to the image processing unit in the controller. The image processing unit will process the received material image information, including analyzing the grayscale information, depth information and other features in the image to identify possible defects in the material. Among them, the possible defects in the material may include: foreign matter that should not exist in the material, such as metal pieces, plastic fragments, etc.; damage, cracks or tears on the surface or edge of the material; stains, oil stains or other contaminants on the surface of the material; irregular shape of the material, deformation or distortion; uneven color of the material or inconsistent with the standard, etc. By analyzing the grayscale information and depth information in the material image information, the controller in the bag making machine can timely identify defective materials in the material and perform subsequent processing steps in a timely manner.

[0072] Optionally, after acquiring the material image information at the feeding mechanism 2 in real time based on the image acquisition device 1, it also includes: acquiring standard image information of the material; judging whether the material at the current feeding mechanism 2 is a defective material based on the current material image information and the standard image information; if so, executing the step of acquiring the current rotation angle of the fixed axis.

[0073] Among them, the standard image information can be specifically understood as the image information of the pre-set material without defects. The standard image information represents the appearance of the material in an ideal state and is used as a reference for comparison. Specifically, the image processing unit in the controller will compare the current material image information with the standard image information. By analyzing the grayscale information and depth information and other features of the two, the controller in the bag making machine can determine whether the material at the current feeding mechanism 2 is defective. If, after comparative analysis, it is determined that the material at the current feeding mechanism 2 is a defective material, the following steps can be performed, namely, obtaining the current rotation angle of the fixed axis 301, which provides a basis for the subsequent precise positioning and removal of defective materials. On the contrary, if, after comparative analysis, it is determined that the material at the current feeding mechanism 2 is not defective, the cutting mechanism can be normally controlled to cut the material.

[0074] S102. When it is determined that the material at the current feeding mechanism is a defective material according to the current material image information, the current rotation angle of the fixed axis is obtained.

[0075] It can be understood that the floating guide roller 302 in the storage mechanism 3 will rotate along the fixed axis 301 in real time, causing the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4 to change in real time. Therefore, in order to accurately locate the defective material and remove it, it is necessary to obtain the current rotation angle of the fixed axis 301 when determining that the material at the feeding mechanism is a defective material, so as to determine the current total length of the material between the defective material and the material at the cutting mechanism 4, so that when the cutting mechanism cuts the material, it can be determined whether the cut material is a defective material, and when the cut material is a defective material, the defective material can be removed.

[0076] Optionally, an absolute encoder coaxially rotating with the fixed shaft 301 is provided on the fixed shaft 301; obtaining the current rotation angle of the fixed shaft 301 includes: obtaining a code value of the absolute encoder; and determining the current rotation angle of the fixed shaft 301 according to the code value.

[0077] The absolute encoder can be specifically understood as a sensor for measuring the absolute position of the fixed shaft 301. The absolute encoder rotates coaxially with the fixed shaft 301 and outputs a specific code value to indicate the current absolute position of the fixed shaft 301. This allows the current rotation angle of the fixed shaft 301 to be determined, providing a basis for determining the current total length of the material. The absolute encoder can accurately determine the rotation angle of the fixed shaft, and because it uses an absolute encoder, there is no need for complex zeroing steps, and the bag making machine controller can obtain the rotation angle information of the fixed shaft in real time.

[0078] S103, determining the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft.

[0079] Specifically, after determining the current rotation angle of the fixed shaft 301 according to the code value of the absolute encoder, the displacement of the floating guide roller 302 in the storage mechanism 3 can be calculated according to the current rotation angle of the fixed shaft 301, so that the floating length of the material in the storage mechanism 3 can be determined according to the displacement of the floating guide roller 302. The floating length of the material in the storage mechanism 3 is the change in the actual length of the material inside the storage mechanism 3 as the floating guide roller 302 rotates. After determining the floating length of the material in the storage mechanism 3, the floating length of the material in the storage mechanism 3 is combined with the fixed length of the material between the feeding mechanism 2 and the storage mechanism 3 to determine the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4, so that the storage bag containing defective materials can be removed by accurately controlling the cutting mechanism 4, thereby improving the stability and reliability of the production process of the bag making machine.

[0080] S104. Determine the position of the defective material according to the current total length.

[0081] Specifically, according to the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4, the actual length of the defective material from the cutting mechanism 4 can be determined. By combining the actual length with the length of the material cut by the cutting mechanism 4 each time, the number of times the cutting mechanism 4 cuts the defective material can be determined, so that the defective material can be accurately located, so that the defective material can be removed in time, improving the product quality of the bag making machine and reducing the scrap rate. At the same time, by accurately removing defective materials, unnecessary removal actions can be reduced, avoiding the waste of normal materials, thereby improving the production efficiency and yield rate of the bag making machine.

[0082] In this embodiment, by acquiring the material image information at the feeding mechanism in real time based on the image acquisition device, the controller in the bag making machine can timely identify defective materials in the material by analyzing the grayscale information and depth information in the material image information, and timely perform subsequent processing steps. When the material at the current feeding mechanism is determined to be defective material according to the current material image information, the current rotation angle of the fixed shaft is obtained, so that the displacement of the floating guide roller can be determined according to the current rotation angle of the fixed shaft, so that the floating length of the material in the storage mechanism can be determined, and the current total length of the material between the feeding mechanism and the cutting mechanism can be determined by combining the floating length of the material in the storage mechanism with the fixed length of the material between the feeding mechanism and the cutting mechanism. At the same time, according to the current total length of the material between the feeding mechanism and the cutting mechanism, the actual length of the defective material from the cutting mechanism can be determined, so that in the process of cutting the material by the cutting mechanism, it can be determined whether the cut material is a defective material according to the length of the material cut by the cutting mechanism, and when it is determined that the cut material is a defective material, the defective material can be removed in time, thereby realizing accurate positioning and removal of the defective material, improving the product quality of the bag making machine and reducing the scrap rate; in addition, the accurate removal of defective materials can avoid the waste of normal materials, thereby improving the production efficiency and yield rate of the bag making machine, and improving the stability and reliability of the production process of the bag making machine.

[0083] Embodiment 3

[0084] Figure 4 is a flow chart of a material defect location method for a bag making machine provided in the third embodiment of the present invention. Based on the above embodiment, this embodiment describes in detail a method for determining the total length of the material between the feeding mechanism and the cutting mechanism. Accordingly, Figure 4 As shown, the material defect location method of the bag making machine of this embodiment may include:

[0085] S201. Acquire material image information at a feeding mechanism in real time based on an image acquisition device.

[0086] S202. When it is determined that the material at the current feeding mechanism is a defective material according to the current material image information, the current rotation angle of the fixed axis is obtained.

[0087] S203: Determine the current real-time length of the material in the material storage mechanism according to the current rotation angle of the fixed shaft.

[0088] Specifically, according to the current rotation angle of the fixed shaft 301 and based on the geometric relationship between the floating guide roller 302 and the fixed shaft 301, the displacement of the floating guide roller 302 in the storage mechanism 3 can be calculated, so that the floating amount of the material in the storage mechanism 3 can be determined according to the displacement of the floating guide roller 302. By combining the floating amount with the reference length of the material in the storage mechanism 3 when the floating guide roller 302 is in the reference position, the current real-time length of the material in the storage mechanism 3 can be determined, thereby providing a basis for determining the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4.

[0089] Optional, such as Figure 2 As shown, the material storage mechanism 3 further includes a first fixed guide roller 303 and a second fixed guide roller 304. The first fixed guide roller 303, the floating guide roller 302 and the second fixed guide roller 304 are sequentially arranged along the material transmission path.

[0090] Among them, the first fixed guide roller 303 and the second fixed guide roller 304 are mechanisms in the storage mechanism 3 that play the role of guiding and supporting materials. The first fixed guide roller 303 and the second fixed guide roller 304 together with the floating guide roller 302 constitute the material transmission path in the storage mechanism 3, ensuring that the material can maintain a stable direction and position during the transmission process in the storage mechanism 3, and stably transmit along a certain trajectory, thereby reducing the deviation and confusion during the material transportation process. In addition, by rotating the floating guide roller 302 along the fixed axis 301, the material accumulation in the storage mechanism 3 can be adjusted, so that the material is evenly distributed in the storage mechanism 3, avoiding excessive or insufficient accumulation, and ensuring the smoothness and stability of the material transportation process. Among them, by determining the arc length r1 of the first fixed guide roller 303, the arc length r2 of the floating guide roller 302, the arc length r3 of the second fixed guide roller 304, the tangent length d1 between the first fixed guide roller 303 and the floating guide roller 302, and the tangent length d2 between the second fixed guide roller 304 and the floating guide roller 302, the current real-time length of the material located in the storage mechanism 3 can be determined.

[0091] It is understandable that the material storage mechanism 3 may include two upper and lower material transmission paths, namely, the first transmission path 01 and the second transmission path 02. When the first transmission path 01 and the second transmission path 02 are combined, they have the same length, and when the image acquisition mechanism 1 is located on one side of the material transmission path, it can only obtain the image information of the material on the upper material transmission path, namely, the first transmission path 01. Therefore, by driving the current real-time length of the material in the first transmission path 01, the current total length of the material between the feeding mechanism and the cutting mechanism can be accurately determined. The method for determining the current real-time length of the material in the second transmission path 02 is similar to the method for determining the current real-time length of the material in the first transmission path 01. The similarities can be referred to the method for determining the current real-time length of the material in the first transmission path, and will not be repeated here.

[0092] Optional, continue to refer to Figure 2 , according to the current rotation angle of the fixed shaft 301, determining the current real-time length of the material located in the storage mechanism 3, including: obtaining the first horizontal distance W1 and the first vertical distance H1 between the center of the first fixed guide roller 303 and the center of the fixed shaft 301, the second horizontal distance W2 and the second vertical distance H2 between the center of the second fixed guide roller 304 and the center of the fixed shaft 301, the third horizontal distance W3 between the center of the floating guide roller 302 and the center of the fixed shaft 301, the first diameter of the first fixed guide roller 303, the second diameter of the second fixed guide roller 304, and the third diameter of the floating guide roller 302; according to the current rotation angle α of the fixed shaft 301, the first horizontal distance W1, the second horizontal distance W2, the third horizontal distance W3, the first vertical distance H1, the second vertical distance H2, the first diameter, the second diameter, and the third diameter, determining the current real-time length of the material located in the storage mechanism 3.

[0093] Specifically, according to the first diameter of the first fixed guide roller 303, the arc length r1 of the material around the first fixed guide roller 303 can be determined; according to the second diameter of the second fixed guide roller 304, the arc length r3 of the material around the second fixed guide roller 304 can be determined; according to the third diameter of the floating guide roller 302, the arc length r2 of the material around the floating guide roller 302 can be determined.

[0094] If a coordinate system is established with the center of the fixed shaft 301 as the origin, the third vertical distance between the center of the floating guide roller 302 and the center of the fixed shaft 301 can be determined based on the sine function (sin) according to the current rotation angle α of the fixed shaft 301. The ordinate y1 of the center of the floating guide roller 302 can be determined based on the third vertical distance. The third horizontal distance W3 between the center of the floating guide roller 302 and the center of the fixed shaft 301 is the abscissa x1 of the center of the floating guide roller 302. The third horizontal distance W4 between the center of the first fixed guide roller 303 and the center of the fixed shaft 301 is the abscissa x1 of the center of the floating guide roller 302. The horizontal distance W1 can determine the horizontal coordinate x2 of the first fixed guide roller 303, and the vertical coordinate y2 of the first fixed guide roller 303 can be determined according to the first vertical distance H1 between the center of the first fixed guide roller 303 and the center of the fixed shaft 301; the horizontal coordinate x3 of the second fixed guide roller 304 can be determined according to the second horizontal distance W2 between the center of the second fixed guide roller 304 and the center of the fixed shaft 301, and the vertical coordinate y3 of the second fixed guide roller 304 can be determined according to the second vertical distance H2 between the center of the second fixed guide roller 304 and the center of the fixed shaft 301. Thus, the coordinate positions of the floating guide roller 302, the first fixed guide roller 303, and the second fixed guide roller 304 in the coordinate system can be determined respectively, and based on the coordinate positions of the three, the first tangent length d1 between the first fixed guide roller 303 and the floating guide roller 302 and the second tangent length d2 between the second fixed guide roller 304 and the floating guide roller 302 can be determined; the sum of the arc length r1 of the first fixed guide roller 303, the arc length r2 of the floating guide roller 302, the arc length r3 of the second fixed guide roller 304, the first tangent length d1, and the second tangent length d2 is the current real-time length of the material in the storage mechanism 3. After determining the current real-time length of the material in the storage mechanism 3, it can provide a basis for determining the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4, thereby facilitating the improvement of the stability and reliability of the production process of the bag making machine.

[0095] S204, obtaining a first fixed length of the material between the feeding mechanism and the material storage mechanism, and a second fixed length between the material storage mechanism and the cutting mechanism.

[0096] For details, please refer to Figure 1, the material length between the feeding mechanism 2 and the storage mechanism 3 is a fixed value, namely, the first fixed length L1, and the material length between the storage mechanism 3 and the cutting mechanism 4 is also a fixed value, namely, the second fixed length L2. After the bag making machine is installed, the first fixed length L1 and the second fixed length L2 are measured by corresponding measuring means, and the measurement results are stored in the corresponding memory. When the material length needs to be calculated, the controller can call the first fixed length L1 and the second fixed length L2 stored in the memory to obtain the first fixed length L1 and the second fixed length L2.

[0097] S205. Determine the current total length of the material according to the first fixed length, the second fixed length and the current real-time length.

[0098] Specifically, after determining the first fixed length L1, the second fixed length L2, and the current real-time length, the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4 can be determined by determining the sum of the first fixed length L1, the second fixed length L2, and the current real-time length, thereby being able to determine the actual length of the defective material from the cutting mechanism 4, so that the controller can accurately control the waste kicking mechanism 5 to accurately remove the defective material according to the actual length, thereby avoiding the waste of normal materials, and at the same time improving the product quality of the bag making machine and reducing the scrap rate.

[0099] S206. Determine the position of the defective material according to the current total length.

[0100] In this embodiment, after obtaining the current rotation angle of the fixed shaft, the current real-time length of the material located in the storage mechanism is accurately determined according to the current rotation angle of the fixed shaft, the first horizontal distance and the first vertical distance between the center of the first fixed guide roller and the center of the fixed shaft, the second horizontal distance and the second vertical distance between the center of the second fixed guide roller and the center of the fixed shaft, the third horizontal distance between the center of the floating guide roller and the center of the fixed shaft, the first diameter of the first fixed guide roller, the second diameter of the second fixed guide roller, and the third diameter of the floating guide roller 302; the current total length of the material can be accurately determined by the first fixed length of the material between the feeding mechanism and the storage mechanism, the second fixed length between the storage mechanism and the cutting mechanism, and the determined current real-time length of the material in the storage mechanism, so that the position of the defective material can be accurately located, so that the controller can accurately control the waste kicking mechanism to accurately remove the defective material, thereby avoiding the waste of normal materials, and at the same time improving the product quality of the bag making machine and reducing the scrap rate.

[0101] Embodiment 4

[0102] Figure 5is a flow chart of a material defect location method for a bag making machine provided in a fourth embodiment of the present invention. Based on the above embodiments, this embodiment describes in detail a method for determining and removing a storage bag containing defective materials. Accordingly, Figure 5 As shown, the material defect location method of the bag making machine of this embodiment may include:

[0103] S301. Acquire material image information at a feeding mechanism in real time based on an image acquisition device.

[0104] S302. When it is determined that the material at the current feeding mechanism is a defective material according to the current material image information, the current rotation angle of the fixed axis is obtained.

[0105] S303: Determine the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft.

[0106] The cutter mechanism 4 is used to cut the material into storage bags of a first preset length.

[0107] Specifically, the cutting mechanism 4 can cut the material into storage bags of a first preset length through the blade, and the cutting sequence number of the defective material can be determined according to the first preset length and the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4.

[0108] S304: Determine the removal sequence number of the defective material according to the current total length and the first preset length.

[0109] Specifically, when the current total length of the material between the feeding mechanism 2 and the cutting mechanism 4 is S, the first preset length of the storage bag is K, and the cutting sequence number of the defective material is N, the relationship among S, K and N can be: It can be understood that by calculating the ratio of the current total length of the material S to the first preset length of the storage bag K and rounding up the ratio, it can be determined that the cutter mechanism 4 cuts off the storage bag containing defective materials during the Nth cutting, thereby accurately controlling the timing of the waste kicking mechanism 5 to remove the defective materials. When the result is not an integer, N needs to be rounded up to the nearest integer. For example, when S K When the value of is 3.2 or 3.5, N should be 4 to ensure that the cutter mechanism 4 cuts off the storage bag containing defective materials during the Nth cutting, thereby achieving accurate removal of defective materials, thereby improving the product quality of the bag making machine and reducing the scrap rate.

[0110] S305. Determine the storage bag to which the defective material belongs according to the cutting sequence number.

[0111] Specifically, according to the cutting sequence number N, it can be determined that the cutting mechanism 4 cuts off the storage bag to which the defective material belongs during the Nth cutting, so that the kicking mechanism 5 can be accurately controlled to remove the storage bag to which the defective material belongs during the Nth cutting by the cutting mechanism 4, thereby improving the stability and reliability of the bag making machine production process.

[0112] S306: After the defective material is determined, the number of cutting times of the cutter mechanism is counted.

[0113] Specifically, when it is determined that the material at the current feeding mechanism is a defective material based on the current material image information, the cutting times of the cutter mechanism 4 can be counted by the counter arranged on the cutter mechanism 4, so that when the cutting times of the cutter mechanism 4 reaches the cutting sequence number, the storage bag including the defective material can be removed, avoiding the defective material from being removed too early or too late, thereby improving production efficiency and product quality.

[0114] S307: When the number of cuts is equal to the cutting sequence number, it is determined that the currently cut storage bag includes defective materials, and the storage bag including the defective materials is removed.

[0115] Specifically, when the number of cutting times of the cutting mechanism 4 is equal to the cutting sequence number N, it can be considered that the storage bag currently cut by the cutting mechanism 4 includes defective materials. At this time, the controller in the bag making machine will control the waste kicking mechanism 5 to remove the storage bag including the defective materials, thereby realizing the precise positioning and removal of the storage bag including the defective materials, thereby improving the product quality produced by the bag making machine, reducing the scrap rate, and avoiding the waste of normal materials, thereby improving the production efficiency and yield rate of the bag making machine.

[0116] Optional, continue to refer to Figure 1 The bag making machine also includes a waste rejection mechanism 5; the storage bag containing defective materials is rejected, including: controlling the waste rejection mechanism 5 to reject the storage bag containing defective materials.

[0117] Exemplarily, the kicking mechanism 5 may include a pneumatic device and a transmission device. When it is determined that the storage bag currently cut by the cutting mechanism 4 includes defective materials, the controller will control the kicking mechanism 5 to generate airflow through the pneumatic device to quickly remove the storage bag including the defective material from the production line, thereby achieving accurate positioning and removal of the storage bag including the defective material, so as to ensure the product quality and production smoothness of the bag making machine.

[0118] In this embodiment, the current total length of the material between the feeding mechanism and the cutting mechanism and the first preset length of the storage bag are determined to determine the cutting sequence number of the defective material, so that according to the cutting sequence number, it can be determined that when the number of cuttings by the cutting mechanism is equal to the cutting sequence number, the storage bag cut off is the storage bag to which the defective material belongs. At the same time, after determining the defective material, by counting the number of cuttings by the cutting mechanism, it can be determined that the current cut storage bag includes the defective material when the number of cuttings is equal to the cutting sequence number, and the waste rejection mechanism can be controlled to reject the storage bag including the defective material, thereby achieving accurate positioning and rejection of the storage bag including the defective material, thereby improving the product quality of the bag making machine, reducing the scrap rate, and avoiding the waste of normal materials, and improving the stability and reliability of the production process of the bag making machine.

[0119] Embodiment 5

[0120] Figure 6 : is a schematic diagram of the structure of a material defect locating device for a bag making machine provided in the fifth embodiment of the present invention. The device can implement the material defect locating method for a bag making machine provided in the embodiment of the present invention. The device can be implemented by software and / or hardware, and can generally be integrated into the controller of the bag making machine. Figure 6 As shown, the device includes: a graphic information acquisition module 401, a rotation angle acquisition module 402, a current total length determination module 403 and a defective material position determination module 404. The specific structure of the device is as follows:

[0121] The graphic information acquisition module 401 is used to acquire the material image information at the feeding mechanism in real time based on the image acquisition device.

[0122] The rotation angle acquisition module 402 is used to acquire the current rotation angle of the fixed axis when it is determined that the material at the current feeding mechanism is a defective material according to the current material image information.

[0123] The current total length determination module 403 is used to determine the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft.

[0124] The defective material position determination module 404 is used to determine the position of the defective material according to the current total length.

[0125] In an optional embodiment of the present invention, the current total length determination module 403 can also be used to: determine the current real-time length of the material located in the storage mechanism based on the current rotation angle of the fixed axis; obtain the first fixed length of the material between the feeding mechanism and the storage mechanism, and the second fixed length between the storage mechanism and the cutting mechanism; determine the current total length of the material based on the first fixed length, the second fixed length and the current real-time length.

[0126] In an optional embodiment of the present invention, the storage mechanism also includes a first fixed guide roller and a second fixed guide roller, and the first fixed guide roller, the floating guide roller and the second fixed guide roller are arranged in sequence along the material transmission path, and the current total length determination module 403 can also be used to: obtain the first horizontal distance and the first vertical distance between the center of the first fixed guide roller and the center of the fixed shaft, the second horizontal distance and the second vertical distance between the center of the second fixed guide roller and the center of the fixed shaft, the third horizontal distance between the center of the floating guide roller and the center of the fixed shaft, the first diameter of the first fixed guide roller, the second diameter of the second fixed guide roller, and the third diameter of the floating guide roller; determine the current real-time length of the material located in the storage mechanism according to the current rotation angle of the fixed shaft, the first horizontal distance, the second horizontal distance, the third horizontal distance, the first vertical distance, the second vertical distance, the first diameter, the second diameter, and the third diameter.

[0127] In an optional embodiment of the present invention, the cutting mechanism is used to cut the material into storage bags of a first preset length, and the defective material position determination module 404 can also be used to: determine the cutting number of the defective material based on the current total length and the first preset length; and determine the storage bag to which the defective material belongs based on the cutting number.

[0128] In an optional embodiment of the present invention, the defective material position determination module 404 can also be used to: after determining the defective material, count the number of cutting times of the cutting knife mechanism; when the number of cutting times is equal to the cutting sequence number, determine that the current cutting storage bag includes defective materials, and remove the storage bag including the defective materials.

[0129] In an optional embodiment of the present invention, the bag making machine further includes a waste rejection mechanism, and the defective material position determination module 404 can also be used to control the waste rejection mechanism to reject the storage bag including the defective material.

[0130] In an optional embodiment of the present invention, an absolute encoder rotating coaxially with the fixed shaft is provided on the fixed shaft, and the rotation angle acquisition module 402 can also be used to: obtain the code value of the absolute encoder; and determine the current rotation angle of the fixed shaft according to the code value.

[0131] In an optional embodiment of the present invention, the graphic information acquisition module 401 can also be used to: obtain standard image information of the material; determine whether the material at the current feeding mechanism is a defective material based on the current material image information and the standard image information; if so, execute the step of obtaining the current rotation angle of the fixed axis.

[0132] The material defect locating device for the bag making machine can execute the material defect locating method for the bag making machine provided in any embodiment of the present invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details not described in detail in this embodiment, please refer to the material defect locating method based on the bag making machine provided in any embodiment of the present invention.

[0133] Since the material defect locating device for the bag-making machine described above is a device that can execute the material defect locating method for the bag-making machine in the embodiment of the present invention, based on the material defect locating method for the bag-making machine described in the embodiment of the present invention, the technical personnel in this field can understand the specific implementation of the material defect locating device for the bag-making machine in this embodiment and its various variations, so how the material defect locating device for the bag-making machine implements the material defect locating method for the bag-making machine in the embodiment of the present invention will not be described in detail here. As long as the technical personnel in this field implement the device used by the material defect locating method for the bag-making machine in the embodiment of the present invention, it belongs to the scope of protection of this application.

[0134] Embodiment 6

[0135] Figure 7 The schematic diagram of the structure of the controller of the material defect location method of the bag making machine which can be used to implement the embodiment of the present invention is shown. The controller can take various forms to adapt to the environment and requirements inside the bag making machine, such as industrial computers, industrial controllers, industrial intelligent terminals, industrial embedded systems and industrial control units, which are specially designed to monitor and adjust the operation of the bag making machine to ensure the stability and reliability of the production process of the bag making machine. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present invention described and / or required herein.

[0136] like Figure 7 As shown, the controller 10 includes at least one processor 11, and a memory connected to the at least one processor 11, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., wherein the memory stores a computer program that can be executed by at least one processor, and the processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or the computer program loaded from the storage unit 18 to the random access memory (RAM) 13. In the RAM 13, various programs and data required for the operation of the controller 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0137] A number of components in the controller 10 are connected to the I / O interface 15, including: an input unit 16, such as a control button of the bag-making machine, an operation panel, etc.; an output unit 17, such as a display screen, a sound prompt system, etc. of the bag-making machine; a storage unit 18, such as a hard disk, a flash memory, etc. of the bag-making machine; and a communication unit 19, such as a communication module of the bag-making machine, a Wi-Fi device, etc. The communication unit 19 allows the controller 10 to exchange information / data with other devices through, for example, an internal network and / or a communication system of the bag-making machine.

[0138] The processor 11 may be a variety of general and / or special processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 executes the various methods and processes described above, such as a material defect location method for a bag making machine.

[0139] In some embodiments, the material defect location method for a bag making machine may be implemented as a computer program, which is tangibly contained in a computer-readable storage medium, such as a storage unit. In some embodiments, part or all of the computer program may be loaded and / or installed on the bag making machine of the above embodiment via a ROM and / or a communication unit. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the material defect location method for the bag making machine described above may be executed. Alternatively, in other embodiments, the processor 11 may be configured to execute the material defect location method for the bag making machine in any other appropriate manner (e.g., by means of firmware).

[0140] Optionally, a material defect positioning method for a bag making machine may include: acquiring material image information at a feeding mechanism in real time based on an image acquisition device; when determining that the material at the current feeding mechanism is a defective material based on the current material image information, acquiring the current rotation angle of the fixed axis; determining the current total length of the material between the feeding mechanism and the cutting mechanism based on the current rotation angle of the fixed axis; and determining the position of the defective material based on the current total length.

[0141] Various implementations of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field programmable gate arrays (FPGAs), application specific integrated circuits (ASICs), application specific standard products (ASSPs), systems on chips (SOCs), load programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various implementations can include: being implemented in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which can be a special purpose or general purpose programmable processor that can receive data and instructions from a storage system, at least one input device, and at least one output device, and transmit data and instructions to the storage system, the at least one input device, and the at least one output device.

[0142] Computer programs for implementing the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, so that when the computer program is executed by the processor, the functions / operations specified in the flow chart and / or block diagram are implemented. The computer program may be executed entirely on the machine, partially on the machine, partially on the machine and partially on a remote machine as a stand-alone software package, or entirely on a remote machine or server.

[0143] In the context of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in combination with an instruction execution system, device or equipment. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, devices or equipment, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. A more specific example of a machine-readable storage medium may include an electrical connection based on one or more lines, a portable computer disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.

[0144] To provide interaction with a user, the systems and techniques described herein may be implemented on a controller having: a bag making machine display device (e.g., a display screen of a bag making machine) for displaying information to a user; and a bag making machine input unit (e.g., a control button or operation panel of a bag making machine), through which a user may provide input to the controller. Other types of devices may also be used to provide interaction with a user; for example, the feedback provided to the user may be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from a user may be received in any form (including acoustic input, voice input, or tactile input).

[0145] The systems and techniques described herein may be implemented in a computing system that includes backend components (e.g., as a data server), or a computing system that includes middleware components (e.g., an application server), or a computing system that includes frontend components (e.g., a user computer with a graphical user interface or a web browser through which a user can interact with implementations of the systems and techniques described herein), or a computing system that includes any combination of such backend components, middleware components, or frontend components. The components of the system may be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include: a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0146] A computing system may include a client and a server. The client and the server are generally remote from each other and usually interact through a communication network. The client and server relationship is generated by computer programs running on the corresponding computers and having a client-server relationship with each other. The server may be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system to solve the defects of difficult management and weak business scalability in traditional physical hosts and VPS services.

[0147] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution disclosed in the present invention can be achieved, and this document does not limit this.

[0148] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A material defect location method for a bag making machine, characterized in that: The bag making machine at least comprises an image acquisition device, a feeding mechanism, a storage mechanism and a cutting mechanism, wherein the image acquisition device is arranged at the feeding mechanism, the storage mechanism is located between the feeding mechanism and the cutting mechanism, the storage mechanism at least comprises a floating guide roller rotating along a fixed axis, the material is sequentially transmitted to the cutting mechanism through the feeding mechanism and the storage mechanism, and the material defect positioning method of the bag making machine comprises: Acquire material image information at the feeding mechanism in real time based on the image acquisition device; When it is determined according to the current material image information that the material currently at the feeding mechanism is a defective material, obtaining the current rotation angle of the fixed axis; Determining the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft; The position of the defective material is determined according to the current total length.

2. The material defect location method of the bag making machine according to claim 1 is characterized in that: Determining the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft includes: Determining the current real-time length of the material in the material storage mechanism according to the current rotation angle of the fixed shaft; Obtaining a first fixed length of the material between the feeding mechanism and the material storage mechanism, and a second fixed length between the material storage mechanism and the cutting mechanism; The current total length of the material is determined according to the first fixed length, the second fixed length and the current real-time length.

3. The material defect location method of the bag making machine according to claim 2 is characterized in that: The material storage mechanism further comprises a first fixed guide roller and a second fixed guide roller, wherein the first fixed guide roller, the floating guide roller and the second fixed guide roller are sequentially arranged along the material transmission path; Determining the current real-time length of the material in the material storage mechanism according to the current rotation angle of the fixed shaft includes: Obtaining a first horizontal distance and a first vertical distance between the center of the first fixed guide roller and the center of the fixed shaft, a second horizontal distance and a second vertical distance between the center of the second fixed guide roller and the center of the fixed shaft, a third horizontal distance between the center of the floating guide roller and the center of the fixed shaft, a first diameter of the first fixed guide roller, a second diameter of the second fixed guide roller, and a third diameter of the floating guide roller; The current real-time length of the material in the storage mechanism is determined based on the current rotation angle of the fixed axis, the first horizontal distance, the second horizontal distance, the third horizontal distance, the first vertical distance, the second vertical distance, the first diameter, the second diameter, and the third diameter.

4. The material defect location method of the bag making machine according to claim 1, characterized in that: The cutting mechanism is used to cut the material into storage bags of a first preset length; Determining the position of the defective material according to the current total length includes: Determining a cutting sequence number of the defective material according to the current total length and the first preset length; The storage bag to which the defective material belongs is determined according to the cutting sequence number.

5. The material defect location method of the bag making machine according to claim 4, characterized in that: Also includes: After determining the defective material, counting the number of cutting times of the cutting mechanism; When the number of cuts is equal to the cutting sequence number, it is determined that the storage bag currently being cut includes the defective material, and the storage bag including the defective material is removed.

6. The material defect location method of the bag making machine according to claim 5, characterized in that: The bag making machine also includes a waste rejection mechanism; Removing the storage bag containing the defective material comprises: The waste rejection mechanism is controlled to reject the storage bag containing the defective material.

7. The material defect location method of the bag making machine according to claim 1, characterized in that: The fixed shaft is provided with an absolute value encoder which rotates coaxially with the fixed shaft; Get the current rotation angle of the fixed axis, including: Obtaining the encoding value of the absolute value encoder; The current rotation angle of the fixed axis is determined according to the encoding value.

8. The material defect location method of the bag making machine according to claim 1, characterized in that: After acquiring the material image information at the feeding mechanism in real time based on the image acquisition device, the method further includes: Get standard image information of materials; According to the current material image information and the standard image information, determining whether the material currently at the feeding mechanism is a defective material; If yes, the step of obtaining the current rotation angle of the fixed axis is performed.

9. A material defect locating device for a bag making machine, characterized in that: The bag making machine at least comprises an image acquisition device, a feeding mechanism, a storage mechanism and a cutting mechanism, wherein the image acquisition device is arranged at the feeding mechanism, the storage mechanism is located between the feeding mechanism and the cutting mechanism, the storage mechanism at least comprises a floating guide roller rotating along a fixed axis, the material is sequentially transmitted to the cutting mechanism through the feeding mechanism and the storage mechanism, and the material defect locating device of the bag making machine comprises: A graphic information acquisition module, used for acquiring material image information at the feeding mechanism in real time based on the image acquisition device; A rotation angle acquisition module, used for acquiring the current rotation angle of the fixed axis when it is determined that the material currently at the feeding mechanism is a defective material according to the current material image information; A current total length determination module, used to determine the current total length of the material between the feeding mechanism and the cutting mechanism according to the current rotation angle of the fixed shaft; The defective material position determination module is used to determine the position of the defective material according to the current total length.

10. A bag making machine, characterized in that: At least includes: an image acquisition device, a feeding mechanism, a storage mechanism, a cutting mechanism and a controller; The image acquisition device is arranged at the feeding mechanism, the storage mechanism is located between the feeding mechanism and the cutting mechanism, the storage mechanism at least comprises a floating guide roller rotating along a fixed axis, and the material is sequentially transmitted to the cutting mechanism through the feeding mechanism and the storage mechanism; The controller is used to execute the material defect locating method for a bag making machine as described in any one of claims 1-8.

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