Bag body forming apparatus

Abstract

The utility model relates to the field of bag making machine discloses the braid detection mechanism of bag body forming equipment, including frame, the frame installation sheet material conveying device and controller, sheet material conveying device sends sheet material to wear braid stay position, braid detection stay position and bag mouth inner folding stay position in proper order along the direction of conveyance, and the both sides of frame all are provided with wear braid device, braid detection device, bag mouth inner folding device, and braid detection device includes detection component, when sheet material stays in braid detection stay position, detection component detects the fixed condition of braid and sheet material through visual inspection or relative sheet material's displacement, and will detect signal delivery to controller, the utility model through setting independent braid detection stay position, completes braid fixed condition detection under the sheet material stationary state, avoids the speed interference, vibration interference when dynamic detection, and greatly promotes detection accuracy.

Description

Technical Field

[0001] This utility model relates to the field of bag making machines, and in particular to a webbing detection mechanism for bag forming equipment. Background Technology

[0002] In the production of tote bags, webbing, used as handles, is typically fixed to the sheet material in a U-shape. The sheet material then undergoes folding and shaping processes to form the bag body. The quality of the webbing's attachment to the sheet material directly affects the bag's performance and appearance.

[0003] In existing technologies, the fixing and inspection of webbing and sheet material are typically carried out using the following methods: manual sampling, which is not only inefficient but also difficult to guarantee the comprehensiveness and accuracy of the inspection, and is prone to missed detections; some equipment with detection functions performs dynamic inspection during the sheet material conveying process, after the webbing is threaded, the detection device inspects the webbing during the bag conveying process. However, the detection accuracy is difficult to guarantee due to factors such as conveying speed and equipment vibration. Most methods can only detect the presence of webbing; under high-speed equipment operation, the position of the webbing is difficult to clearly detect, and if the bag opening is folded inward after inspection, the fixing end of the webbing is hidden in the fold, making it impossible to subsequently inspect the webbing's adhesion position. If quality problems occur in the bag, they will not be detected, affecting the quality of the finished bag.

[0004] Therefore, there is an urgent need for a webbing inspection mechanism that can automatically detect defects during the bag forming process, after the webbing is fixed and before it is folded inward, and can control whether subsequent processes participate in the work based on the inspection results, so as to promptly remedy unqualified webbing and reduce the scrap rate. Utility Model Content

[0005] This utility model addresses the shortcomings of existing technologies by providing a webbing detection mechanism for bag forming equipment.

[0006] The present invention solves the above-mentioned technical problems through the following technical solution:

[0007] The webbing inspection mechanism of the bag forming equipment includes a frame, on which a sheet material conveying device and a controller are installed. The sheet material conveying device sequentially feeds the sheet material to the webbing insertion stop position, the webbing inspection stop position, and the bag opening inward fold stop position along the conveying direction. At the webbing insertion stop position, the webbing inspection stop position, and the bag opening inward fold stop position, webbing insertion device, webbing inspection device, and bag opening inward fold stop position are respectively provided on both sides of the sheet material along the length extension direction. The webbing insertion device is used to fix the ends of a webbing with a width of L into the sheet material in a U-shape, ensuring the webbing is in a detectable fixed state. The webbing inspection device includes a detection component, which is electrically connected to the controller and transmits the detection signal to the controller. The controller processes the detection signal and issues corresponding instructions; these instructions include real-time alarm, separate conveying of unqualified bags, and differentiated processing, etc. These methods are common practices in the field and will not be elaborated upon here. The bag opening inward folding device is used to fold the folding pieces on both sides of the sheet material inward along its length extension direction and hide the end of the webbing between the folding pieces and the sheet material, so that the webbing fixation status is in a state that is detectable; therefore, this utility model sets a webbing detection device between the bag opening inward folding device and the webbing threading device, rather than performing the detection after the folding is completed or the bag body is fully formed.

[0008] When the sheet material stops at the webbing detection stopping position, the detection component moves relative to the sheet material so that the detection range includes the detection line. The extension direction of the detection line is the same as the extension direction of the sheet material width. There are detection points A and B on the left and right sides of the intersection of one end of the webbing and the detection line, respectively. There are detection points D and E on the left and right sides of the intersection of the other end of the webbing and the detection line, respectively. The detection component detects at least one of detection points A and B and one of detection points D and E. The detection component determines whether there is webbing on both sides of the sheet material based on whether all the preset detection points are detected.

[0009] Alternatively, when the sheet material stops at the webbing detection stop position, the detection component visually inspects whether there are webbings on both sides of the sheet material. One end of the webbing protrudes from the sheet material with sequentially connected edges E, F, G, and H; the other end protrudes from the sheet material with sequentially connected edges J, K, M, and N. The detection component visually inspects at least two of edges E, F, G, and H, or at least two detection points on edges E, F, G, and H, and at least two of edges J, K, M, and N, or at least two detection points on edges J, K, M, and N, to determine whether there are webbings on both sides. By setting up a detection step at a specific stop position, rather than performing detection during the conveying process, the stop detection method ensures the reliability of the detection results. Defective products are promptly intercepted and manually re-secured with the webbing. Folding the bag opening on the side with defective webbing avoids subsequent ineffective processing and the generation of waste.

[0010] If the detection component can detect both ends of the webbing, there are detection points A, B, D and E on the same detection line in sequence. Detection points A and B are located at one end of the webbing, and detection points D and E are located at the other end of the webbing. The distance between detection points A and B is S1, and the distance between detection points D and E is S2.

[0011] The controller compares the differences between S1 and the webbing width L, and S2 and the webbing width L, with preset threshold differences. If one of these differences is greater than or equal to the threshold difference, or if one of detection points A, B, D, or E is missing, the webbing fixation on that side of the bag is deemed unqualified; otherwise, the webbing fixation on that side of the bag is deemed qualified. Through an algorithm comparing the detection point spacing with the webbing width, the missing or skewed webbing fixation issues are quantified, achieving objective, accurate, and automatic judgment.

[0012] Preferably, the skew angles at both ends of the webbing are α=arccos(L / S1) and β=arccos(L / S2). α and β are the skew angles at which the webbing ends adhere to the bag body material, respectively, to calculate whether the skew angle is within the preset range, resulting in accurate results.

[0013] Preferably, the controller compares the distance between detection points D and B, or the distance between detection points A and E. If the distance does not meet the preset value, the controller determines that the webbing on that side of the bag is not properly fixed; otherwise, the controller determines that the webbing on that side of the bag is properly fixed.

[0014] Preferably, the detection component is a non-contact sensor, connected to a power source that drives its reciprocating motion along the conveying direction. The displacement direction of the detection component is the same as or opposite to the conveying direction of the sheet material conveying device, moving from one end of the webbing to the other. The webbing detection device can be a thickness sensor, an optical sensor, or a laser sensor. The detection component can perform localized detection using certain sensing methods, but it does not come into contact with the webbing or sheet material, thus avoiding interference with the webbing adhesion during the detection process.

[0015] Preferably, the detection component is a visual inspection device. The detection component determines that the webbing on this side of the bag is properly fixed by visually inspecting the width of any two opposite edges among edge E, edge F, edge G, and edge H, or the angle between the inner and outer edges F and H, as well as the width of any two opposite edges among edge J, edge K, edge M, and edge N, or the angle between the inner and outer edges K and N.

[0016] Alternatively, the detection component can determine the suitability of the webbing fixation on that side of the bag by visually inspecting the shapes formed by edges E, F, G, H, J, K, M, and N. The visual inspection device can perform inspection by taking a picture and scanning, capturing a panoramic view of the webbing fixed to the sheet material in a static state. It can quickly acquire overall image information of the webbing fixation, has a wide detection range, and can simultaneously identify multiple problems such as webbing position, skewness, and missing pieces. It is adaptable to the inspection needs of different types of webbing, thus enabling accurate measurement and judgment.

[0017] Preferably, when the controller determines that the webbing on one side of the bag body is not properly fixed according to the detection signal, the bag opening inward folding device does not participate in the work on that side of the bag body, or both bag opening inward folding devices on both sides stop the folding work of the bag body. When the controller determines that the webbing on both sides of the bag body is properly fixed according to the detection signal, the sheet material conveying device sends the sheet material to the bag opening inward folding stopping position, and the bag opening inward folding device folds the folding sheets on both sides inward.

[0018] Preferably, the webbing detection device includes a slide rail and a slider, the detection component is connected to the slider, and the slider is connected to the detection power source and reciprocates on the slide rail.

[0019] Preferably, the webbing inspection device includes a sheet material support platform, and further includes a sheet material positioning component that holds the sheet material on the support platform. The cooperation between the sheet material support platform and the sheet material positioning component ensures that the sheet material remains flat and fixed during the inspection process, preventing sheet material displacement.

[0020] Preferably, the sheet positioning component is a pressing component above the sheet support platform, and the pressing component is connected to a lifting power source that drives it to rise and fall. Alternatively, the sheet positioning component is a negative pressure adsorption hole provided on the sheet support platform or a negative pressure adsorption component provided below the sheet support platform, and the negative pressure adsorption hole and the negative pressure adsorption component are connected to a negative pressure source.

[0021] This utility model, by adopting the above technical solution, has significant technical effects:

[0022] This invention, by setting an independent webbing detection stop position, completes the webbing fixation detection while the sheet material is stationary, completely avoiding speed and vibration interference during dynamic detection and significantly improving detection accuracy. Simultaneously, the detection directly links to subsequent processes, eliminating the need for defective products to enter the inner folding process, reducing unnecessary operations and material waste, and improving overall production efficiency. Utilizing algorithms for detection allows for multi-dimensional judgment of whether the webbing is fixed to the sheet material, whether the fixation is skewed, and whether the fixation position is accurate, thereby improving bag quality. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of the ribbon testing mechanism of this utility model;

[0024] Figure 2 This is a schematic diagram of the structure of the webbing threading device, webbing detection device, and bag opening inward folding device of this utility model connected together;

[0025] Figure 3 yes Figure 1 A magnified view of part C;

[0026] Figure 4 This is a schematic diagram of the structure for fixing the webbing on the visual inspection fold.

[0027] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Sheet material; 11. Folded edge piece; 2. Webbing threading device; 3. Webbing detection device; 31. Detection component; 32. Detection line; 33. Detection power source; 34. Slide rail; 35. Slider; 36. Sheet material support platform; 37. Pressing component; 38. Lifting power source; 4. Bag opening inward folding device; 5. Webbing; 511. Detection point A; 512. Detection point B; 521. Detection point D; 522. Detection point E; 53. Edge E; 54. Edge F; 55. Edge G; 56. Edge H; 57. Edge J; 58. Edge K; 59. Edge M; 50. Edge N. Detailed Implementation

[0028] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. Example

[0029] The webbing inspection mechanism of the bag forming equipment, such as Figure 1-2As shown, the webbing detection mechanism of the bag forming equipment includes a frame, on which a sheet material conveying device and a controller are installed. The sheet material conveying device sequentially feeds the sheet material 1 to the webbing insertion stopping position, the webbing detection stopping position, and the bag opening inward folding stopping position along the conveying direction. At the webbing insertion stopping position, the webbing detection stopping position, and the bag opening inward folding stopping position, the frame is equipped with a webbing insertion device 2, a webbing detection device 3, and a bag opening inward folding device 4 on both sides of the sheet material 1 along its length extension direction. These devices on both sides are for processing both sides of the bag body separately. After the bag body is formed, webbing is fixed on both surfaces. The webbing insertion device 2 is used to insert a webbing of width L... The webbing 5 is fixed to the sheet material 1 with U-shaped ends, making the fixed state of the webbing 5 detectable. The webbing detection device 3 includes a detection component 31, which is electrically connected to the controller and transmits the detection signal to the controller. The controller processes the detection signal and issues corresponding instructions. The bag opening folding device 4 is used to fold the folding pieces 11 on both sides of the sheet material 1 inward along its length extension direction and hide the ends of the webbing 5 between the folding pieces 11 and the sheet material 1, making the fixed state of the webbing 5 detectable. The webbing 5 and the sheet material 1 are usually fixed by adhesive, but other conventional fixing methods in the art are not excluded. The sheet material conveying device can pick up the sheet material 1 by suction or clamping, and then move along the conveying direction to sequentially send the sheet material to the webbing insertion stop position, the webbing detection stop position, and the bag opening folding stop position. The sheet material conveying device can use lifting motion to suspend and convey the sheet material 1, and then process it on the corresponding platform, or it can be conveyed directly on the processing plane. The sheet material conveying device can also use conventional conveying methods in the art, such as pushing the sheet material 1. The bag opening inward folding device 4 typically folds the bag opening inward by lifting and folding the folding piece 11 inward, or by swinging the folding piece in an arc shape. Its action involves folding the folding piece 11 inward and hiding the fixed portion of the webbing 5 and the sheet material 1 between the folding piece 11 and the sheet material 1. Since how the sheet material 1 is fed and how the bag opening is folded inward are not the focus of this invention, they are not limited here. The controller can be a module added to the main computer of the equipment, whose output signals can control the movement of various machine components. Alternatively, a separate computing and control device can be specifically set up for the webbing detection device 3. This is prior art in the field and is not limited here.

[0030] As one implementation method, such as Figure 3As shown, when the sheet material 1 is stopped at the webbing detection stopping position, the detection component 31 is displaced relative to the sheet material 1 so that the detection range includes the detection line 32. The extension direction of the detection line 32 is the same as the extension direction of the width of the sheet material 1. At the intersection of one end of the webbing 5 and the detection line 32, there are detection points A511 and B512 on the left and right sides respectively. At the intersection of the other end of the webbing 5 and the detection line 32, there are detection points D521 and E522 on the left and right sides respectively. The detection component 31 detects at least one of the detection points A511 and B512 and one of the detection points D521 and E522. The detection component 31 determines whether there are webbing 5 on both sides of the sheet material 1 based on whether all the preset detection points are detected.

[0031] As one type of detection method that does not require movement of the detection component 31, such as Figure 4 As shown, the detection component 31 is a vision inspection device. The detection component 31 directly captures the webbing fixation status by taking a picture after the sheet material stops, and can also simultaneously detect other states of the sheet material. When the sheet material 1 is at the webbing detection stop position, the detection component 31 visually detects whether there are webbing 5 on both sides of the sheet material 1. One end of the webbing 5 protruding from the sheet material 1 has sequentially connected edges E53, F54, G55, and H56, and the other end of the webbing 5 protruding from the sheet material 1 has sequentially connected edges J57, K58, M59, and N50. The detection component 31 determines whether there are webbing 5 on both sides by visually detecting at least two of the edges E53, F54, G55, and H56, or at least two detection points on the edges E53, F54, G55, and H56, and at least two of the edges J57, K58, M59, and N50, or at least two detection points on the edges J57, K58, M59, and N50. The principle is that if two points on different edges or the edges themselves are detected at each end of the webbing 5, the presence of the webbing can be determined.

[0032] If the detection component 31 can detect both ends of the webbing 5, it has detection points A511, B512, D521, and E522 sequentially on the same detection line 32. Among them, detection points A511 and B512 are located at one end of the webbing 5, and detection points D521 and E522 are located at the other end of the webbing 5. The distance between detection points A511 and B512 is S1, and the distance between detection points D521 and E522 is S2.

[0033] The controller compares the difference between S1 and the width L of webbing 5, and S2 and the width L of webbing 5, and compares the difference with a preset threshold difference. If one of them is greater than or equal to the threshold difference, or if one of the detection points A511, B512, D521, and E522 is missing, the controller determines that the webbing 5 on that side of the bag is not properly fixed. Otherwise, the controller determines that the webbing 5 on that side of the bag is properly fixed.

[0034] As an auxiliary algorithm, the skew angles at both ends of the webbing 5 are α=arccos(L / S1) and β=arccos(L / S2). α and β are the magnitudes of the skew angles between the webbing ends and the bag body material, respectively. If there is no skew, both α and β are 0; if α and β are not 0, the webbing fixation is judged according to the preset angle values. Quantifying the skew condition of the webbing ends into angle values ​​facilitates numerical judgment and statistical analysis. This calculation is based on the acquired S1 and S2 data, requiring no additional detection hardware and can be implemented based on existing detection data, resulting in low system cost.

[0035] As an auxiliary algorithm, the controller compares the distance between detection points D521 and B512, or the distance between detection points A511 and E522. If the distance does not meet the preset value, it determines that the webbing 5 on that side of the bag is not properly fixed; otherwise, it determines that the webbing 5 on that side of the bag is properly fixed. By comparing the distance between the detection points with the preset distance, the positional deviation of the webbing fixation is quantified, achieving precise judgment. For example, if the difference between the distance between detection points A511 and E522 and the preset value is outside the acceptable range, it indicates that at least one end of the webbing is incorrectly attached.

[0036] As a detection method requiring the movement of the detection component 31 to acquire global information about the webbing, the detection component 31 is a non-contact sensor. The detection component 31 is connected to a detection power source 33 that drives it to reciprocate along the conveying direction. The displacement direction of the detection component 31 is the same as or opposite to the conveying direction of the sheet material 1 conveying device, moving from one end of the webbing to the other. The webbing detection device 3 is a thickness sensor, an optical sensor, or a laser sensor.

[0037] The detection component 31 is a visual inspection device. The detection component 31 determines that the webbing 5 on that side of the bag body is properly fixed by visually inspecting the width of any two opposite edges among edges E53, F54, G55, and H56, or the included angle between the inner and outer edges F54 and H56, and the width of any two opposite edges among edges J57, K58, M59, and N50, or the included angle between the inner and outer edges K58 and N50. Alternatively, the detection component 31 determines that the webbing 5 on that side of the bag body is properly fixed by visually inspecting the shapes formed by edges E53, F54, G55, H56, J57, K58, M59, and N50.

[0038] When the controller determines that the webbing 5 on one side of the bag body is not properly fixed according to the detection signal, the bag opening inward folding device 4 will not participate in the work on that side of the bag body, or both bag opening inward folding devices 4 on both sides will stop the folding work of the bag body. When the controller determines that the webbing 5 on both sides of the bag body is properly fixed according to the detection signal, the sheet material conveying device will send the sheet material 1 to the bag opening inward folding stopping position, and fold the folding pieces 11 on both sides inward through the bag opening inward folding device 4.

[0039] The webbing detection device 3 includes a slide rail 34 and a slider 35. The detection component 31 is connected to the slider 35, and the slider 35 is connected to the detection power source 33 and reciprocates on the slide rail 34.

[0040] The webbing detection device 3 can operate without additional webbing sheet positioning components. After the sheet material conveying device delivers the sheet material to the appropriate position, the webbing detection device 3 can be raised and lowered to suspend the sheet material in the air for detection, or the sheet material conveying device can lower the sheet material onto the sheet material support platform 36 for detection. As another preferred embodiment, the webbing detection device 3 includes a sheet material support platform 36, and further includes a sheet material positioning component that holds the sheet material 1 on the sheet material support platform 36. The sheet material positioning component fixes the sheet material on the sheet material support platform 36, preventing sheet material displacement and making the detection more accurate. One embodiment of the sheet material positioning component is as follows: Figure 1As shown, the sheet material positioning component is a pressing component 37 above the sheet material support platform 36. The pressing component 37 is connected to a lifting power source 38 that drives its lifting and lowering. The lifting power source drives the pressing component to rise and fall. When the sheet material is being conveyed, the pressing component rises to avoid obstruction, and the pressing component presses the sheet material from above, ensuring reliable positioning and effectively preventing the sheet material from tilting or moving during the inspection process. In the stationary state, the sheet material is stably positioned and supported, and the relative positional relationship between the inspection component and the sheet material is fixed, resulting in high inspection accuracy. During inspection, the pressing component descends to press, and its action is coordinated with the sheet material conveying cycle, without affecting production. As another embodiment of the sheet material positioning component, the sheet material positioning component is a negative pressure adsorption hole provided on the sheet material support platform 36 or a negative pressure adsorption component provided below the sheet material support platform 36. The negative pressure adsorption hole and the negative pressure adsorption component are connected to a negative pressure source.

[0041] The webbing threading device 2 is a conventional device in the art that allows the sheet material 1 with pre-drilled loop holes to pass through the webbing and press the webbing onto the sheet material 1 when the sheet material is laid flat. The sheet material 1 can be pre-glued or glued on the webbing. Its structure is a conventional setting in the art and will not be described in detail here. As a preferred embodiment, the webbing threading device 2 includes an outward-folding pusher for pushing the webbing 5 outward. After the webbing 5 passes through the loop holes from bottom to top, the outward-folding pusher pushes outward so that the fixed position of the webbing 5 and the sheet material 1 is located on the folded edge 11 of the sheet material 1 that needs to be folded inward.

[0042] In the description of this utility model, it should be understood that the terms "center," "length," "width," "thickness," "upper," "lower," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined with "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified.

[0043] In summary, the above description is only a preferred embodiment of the present utility model. All equivalent changes and modifications made within the scope of the patent application of the present utility model shall fall within the scope of the patent of the present utility model.

Claims

1. A webbing detection mechanism for a bag forming equipment, comprising a frame, wherein the frame is equipped with a sheet material conveying device and a controller, characterized in that: The sheet material conveying device sequentially delivers the sheet material (1) to the webbing insertion stop position, the webbing detection stop position, and the bag opening fold-in stop position along the conveying direction. The frame is equipped with a webbing insertion device (2), a webbing detection device (3), and a bag opening fold-in stop position on both sides of the sheet material (1) along the length extension direction. The webbing insertion device (2) is used to fix the two ends of the webbing (5) with a width of L into the sheet material (1) in a U-shape. The fixed condition is in a detectable state. The webbing detection device (3) includes a detection component (31). The detection component (31) is electrically connected to the controller and transmits the detection signal to the controller. The controller processes the detection signal and makes corresponding instructions. The bag opening folding device (4) is used to fold the folding pieces (11) on both sides of the length extension direction of the sheet material (1) inward and hide the end of the webbing (5) between the folding pieces (11) and the sheet material (1), so that the fixed condition of the webbing (5) is in an undetectable state. When the sheet material (1) is stopped at the webbing detection stopping position, the detection component (31) is displaced relative to the sheet material (1) so that the detection range includes the detection line (32). The extension direction of the detection line (32) is the same as the extension direction of the width of the sheet material (1). At the intersection of one end of the webbing (5) and the detection line (32), there are detection points A (511) and B (512) on the left and right respectively. At the intersection of the other end of the webbing (5) and the detection line (32), there are detection points D (521) and E (522) on the left and right respectively. The detection component (31) detects at least one of the detection points A (511) and B (512) and one of the detection points D (521) and E (522). Alternatively, when the sheet material (1) is stopped at the webbing detection stop position, the detection component (31) visually detects whether there are webbing (5) on both sides of the sheet material (1). One end of the webbing (5) is exposed on the sheet material (1) with sequentially connected edges E (53), F (54), G (55), and H (56). The other end of the webbing (5) is exposed on the sheet material (1) with sequentially connected edges J (57), K (58), M (59), and N (50).

2. The webbing detection mechanism of the bag forming equipment according to claim 1, characterized in that: If the detection component (31) can detect both ends of the webbing (5), on the same detection line (32), there are detection points A (511), B (512), D (521), and E (522) in sequence. Among them, detection points A (511) and B (512) are located at one end of the webbing (5), and detection points D (521) and E (522) are located at the other end of the webbing (5). The distance between detection points A (511) and B (512) is S1, and the distance between detection points D (521) and E (522) is S2.

3. The webbing detection mechanism of the bag forming equipment according to claim 2, characterized in that: The skew angles at both ends of the webbing (5) are α=arccos(L / S1) and β=arccos(L / S2).

4. The webbing detection mechanism of the bag forming equipment according to claim 1, characterized in that: The detection component (31) is a non-contact sensor. The detection component (31) is connected to a detection power source (33) that drives it to reciprocate along the conveying direction. The displacement direction of the detection component (31) is the same as or opposite to the conveying direction of the sheet material (1) sheet material conveying device, and it is displaced from one end of the webbing to the other end.

5. The webbing detection mechanism of the bag forming equipment according to claim 2, characterized in that: The detection component (31) is a visual inspection device.

6. The webbing detection mechanism of the bag forming equipment according to claim 4, characterized in that: The webbing detection device (3) includes a slide rail (34) and a slider (35). The detection component (31) is connected to the slider (35), and the slider (35) is connected to the detection power source (33) and reciprocates on the slide rail (34).

7. The webbing detection mechanism of the bag forming equipment according to claim 2, characterized in that: The webbing detection device (3) includes a sheet material support platform (36), and the webbing detection device (3) is also provided with a sheet material positioning component for holding the sheet material (1) on the sheet material support platform (36).

8. The webbing detection mechanism of the bag forming equipment according to claim 7, characterized in that: The sheet positioning component is a pressing component (37) above the sheet support platform (36), and the pressing component (37) is connected to a lifting power source (38) that drives it to rise and fall. Alternatively, the sheet positioning component is a negative pressure adsorption hole provided on the sheet support platform (36) or a negative pressure adsorption component provided below the sheet support platform (36), and the negative pressure adsorption hole and the negative pressure adsorption component are connected to a negative pressure source.

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