Winding packaging method and winding packaging equipment

Abstract

The invention provides a winding packaging method and winding packaging equipment, and the winding packaging method comprises the steps that the demand quantity of a packaging material is obtained through measurement, and in the process of winding the packaging material on the outer surface of a cargo, the packaging material output speed of a packaging material roll is adjusted according to the demand quantity of the packaging material. In the winding and packaging process, the fluctuation amplitude of the tension generated by a packaging material is reduced, so that the packaging quality is improved.

Description

Technical Field

[0001] This invention relates to the field of packaging machine technology, and in particular to a wrapping method and wrapping equipment. Background Technology

[0002] In industrial production, goods typically require packaging. Packaging methods include bundling with strapping or wrapping with packaging materials (usually conventional materials like film and paper). When wrapping goods with packaging materials, the non-circular shape of the goods leads to a mismatch between the supply and usage of packaging materials. This results in uneven tension during wrapping, affecting packaging quality. For example, when wrapping goods with a rectangular cross-section, the tension is higher at the corners and lower on the sidewalls. The large fluctuations in tension due to the goods' outline contribute to reduced packaging quality. Therefore, designing a technology to improve packaging quality is the technical problem this invention aims to solve. Summary of the Invention

[0003] This invention provides a wrapping method and wrapping equipment that reduces the fluctuation range of tension generated by the packaging material during the wrapping process, thereby improving the quality of the packaging.

[0004] This invention provides a wrapping method, comprising: By measuring the required amount of packaging material, the speed at which the packaging material roll is output is adjusted according to the required amount of packaging material during the process of wrapping the packaging material around the outer surface of the goods.

[0005] In one embodiment of this application, the required amount of packaging material is obtained by measurement, specifically as follows: The output speed of the packaging roll is adjusted by measuring the instantaneous speed of the outer surface of the goods corresponding to the part covered by the packaging material.

[0006] In one embodiment of this application, the instantaneous velocity of the outer surface of the goods corresponding to the portion covered by the packaging material, as measured, is specifically as follows: Measure and calculate the distance r between the outer surface of the goods corresponding to the part covered by the packaging material and the rotation center of the wrapping equipment. t And based on the rotational angular velocity ω of the goods relative to the packaging roll. t Calculate the instantaneous velocity v of the part of the cargo's outer surface corresponding to the area covered by the packaging material. t Based on the calculated v t To adjust the speed at which the packaging material is output by the packaging material mechanism.

[0007] In one embodiment of this application, the distance r between the outer surface of the goods corresponding to the portion covered by the packaging material and the rotation center of the wrapping equipment is measured and calculated. t Specifically: The distance Δr between the outer surface of the goods and the corresponding part of the packaging material is measured using a rangefinder. t And according to formula r t =r0-Δr t Calculate r t Where r0 is the distance between the rangefinder and the center of rotation.

[0008] In one embodiment of this application, the distance r between the outer surface of the goods corresponding to the portion covered by the packaging material and the rotation center of the wrapping equipment is measured and calculated. t Specifically: The distance L from the center of rotation to the corresponding sidewall of the goods is calculated by measuring the dimensions of the outer contour of the goods; the distance r from the center of rotation of the wrapping equipment to the part of the outer surface of the goods that covers the packaging material is calculated based on the rotation angle α of the goods relative to the packaging material roll. t .

[0009] In one embodiment of this application, the instantaneous velocity of the outer surface of the goods corresponding to the portion covered by the packaging material, as measured, is specifically as follows: The instantaneous velocity of the outer surface of the goods corresponding to the part covered by the packaging material is directly measured.

[0010] In one embodiment of this application, the required amount of packaging material is obtained by measurement, specifically as follows: The instantaneous speed of the packaging material output from the wrapping equipment is directly measured, and the output speed of the packaging material roll is adjusted according to the measured instantaneous speed of the packaging material.

[0011] In one embodiment of this application, the required amount of packaging material is obtained by measurement, specifically as follows: By measuring the dimensions of the cargo's outer contour, the distance L from the center of rotation to the corresponding vertical angle of the cargo is calculated. This is based on the angular velocity ω of the cargo relative to the packaging roll. t Calculate the required amount of packaging materials.

[0012] In one embodiment of this application, the required amount of packaging material is obtained by measurement, specifically as follows: The required amount of packaging material for wrapping the corresponding sidewalls of the cargo is determined by measuring the relative position of the cargo and the packaging material roll.

[0013] This application also provides a wrapping device for implementing the above-described wrapping method, comprising: A packaging material supply mechanism, the packaging material supply mechanism including an unwinding motor configured to unwind a packaging material roll, and the packaging material supply mechanism configured to output packaging material outward; A packaging material application mechanism, configured to wrap the packaging material output by the packaging material supply mechanism around the outside of the goods; A measuring component is configured to measure changes in position relative to the goods; the packaging material supply mechanism is configured to remain stationary relative to the measuring component. A controller is connected to both the measuring component and the unwinding motor, and the controller is configured to adjust the speed of the unwinding motor based on the measurement values ​​of the measuring component.

[0014] This application also provides a wrapping device for implementing the above-described wrapping method, comprising: A packaging material supply mechanism, the packaging material supply mechanism including an unwinding motor configured to unwind a packaging material roll, and the packaging material supply mechanism configured to output packaging material outward; A packaging material application mechanism, configured to wrap the packaging material output by the packaging material supply mechanism around the outside of the goods; A measuring component, the measuring component being configured to measure the speed of the packaging material output by the packaging material supply mechanism, or the measuring component being configured to measure the instantaneous speed of the outer surface of the goods corresponding to the portion covered by the packaging material; The packaging material supply mechanism and the measuring component are configured to remain stationary relative to each other. A controller is connected to both the measuring component and the unwinding motor, and the controller is configured to adjust the speed of the unwinding motor based on the measurement values ​​of the measuring component.

[0015] By measuring the required amount of packaging material during the wrapping process, the output speed of the packaging material roll is dynamically adjusted according to the different positions of the goods relative to the packaging material roll during the wrapping process. This meets the requirements of the packaging material used in the actual wrapping process, and reduces the fluctuation range of the tension generated by the packaging material during the wrapping process, thereby improving the packaging quality.

[0016] The measuring components measure the relative positional changes of the goods, the output speed of the packaging material, or the instantaneous speed of the outer surface of the goods corresponding to the part covered by the packaging material. Based on the measurement values ​​of the measuring components, the speed of the unwinding motor is dynamically adjusted so that the amount of packaging material output from the packaging roll can match the amount of packaging material required by the corresponding side wall of the goods, reducing the fluctuation range of the tension generated by the packaging material and thus improving the quality of packaging.

[0017] In one embodiment of this application, the wrapping equipment further includes: A packaging material temporary storage mechanism, wherein a temporary storage space is formed in the packaging material temporary storage mechanism, and the temporary storage space is configured to temporarily store the packaging materials output by the packaging material supply mechanism; The packaging material storage mechanism is configured to receive packaging materials output by the packaging material supply mechanism and output the packaging materials to the packaging material using mechanism; In addition, the packaging material temporary storage mechanism is configured to reduce the amount of packaging material stored in the temporary storage space when the amount of packaging material used by the packaging material using mechanism is greater than the amount of packaging material output by the packaging material supply mechanism; the packaging material temporary storage mechanism is also configured to increase the amount of packaging material stored in the temporary storage space when the amount of packaging material used by the packaging material using mechanism is less than the amount of packaging material output by the packaging material supply mechanism.

[0018] By adding a packaging material storage mechanism, a temporary storage space is formed within the mechanism to store a certain amount of packaging material. Packaging materials supplied by the packaging material supply mechanism pass through the storage mechanism, with some of the materials stored in the storage space. The packaging materials are then guided out and transported to the packaging material user, where they are wrapped around the outside of the goods. Due to the influence of the outer shape of the goods, tension fluctuations can easily occur in the packaging materials during the wrapping process. The packaging material storage mechanism can dynamically adjust the amount of packaging materials stored in the storage space according to the difference in usage between the packaging material user and the packaging material supply mechanism. That is, when the usage exceeds the supply, the storage mechanism releases the stored packaging materials to make up for the shortfall; when the usage is less than the supply, the storage mechanism stores the excess packaging materials.

[0019] The temporary storage space allows for dynamic adjustment of the supply and usage of packaging materials, further offsetting instantaneous changes in usage caused by irregularities in the cargo's outer contour. This prevents sudden increases or decreases in tension due to supply-demand imbalances, ensuring the packaging materials maintain a relatively stable tension during the wrapping process. Because tension fluctuations are reduced, the wrapping tightness of the packaging materials on the cargo surface is more uniform. For non-circular goods such as rectangular items, the packaging materials will not be overstretched or even damaged at the corners due to excessive tension, nor will they become loose or wrinkled on the sidewalls due to insufficient tension, thus improving the overall quality of the wrapping packaging. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the structure of an embodiment of the wrapping equipment of the present invention; Figure 2 for Figure 1 A magnified view of a portion of region A in the middle; Figure 3 This is a schematic diagram of another embodiment of the wrapping equipment of the present invention; Figure 4 for Figure 3 A magnified view of a portion of region B in the middle; Figure 5 This is one of the assembly diagrams of the packaging material supply mechanism and the packaging material temporary storage mechanism in the embodiment of the wrapping equipment of the present invention; Figure 6 This is the second assembly diagram of the packaging material supply mechanism and the packaging material temporary storage mechanism in the embodiment of the wrapping equipment of the present invention; Figure 7 This is the third assembly diagram of the packaging material supply mechanism and the packaging material temporary storage mechanism in the embodiment of the wrapping equipment of the present invention; Figure 8 This is one of the structural schematic diagrams of the tension control component in an embodiment of the wrapping equipment of the present invention; Figure 9 This is a second schematic diagram of the tension control component in an embodiment of the wrapping equipment of the present invention; Figure 10 This is one of the reference figures showing the wrapping equipment of the present invention in use. Figure 11 This is the second reference figure showing the wrapping equipment in use in an embodiment of the present invention; Figure 12 This is reference figure three, showing the wrapping equipment of the present invention in use. Figure 13 This is reference figure four, showing the wrapping equipment of the present invention in use. Attached Figure Description

[0021] 1. Packaging material supply mechanism; 11. Unwinding shaft; 12. Unwinding motor; 13. Unwinding roller; 14. Measuring components; 2. Packaging material application mechanism; 21. Support frame; 22. Rotating frame; 23. First rotary drive motor; 24. Rotating base; 25. Second rotary drive motor; 3. Packaging material temporary storage mechanism; 31. Mounting bracket; 32. Buffer assembly; 33. Slide rail; 34. Tension control component; 30. Temporary storage space; 311. Rotary shaft; 312. Rotary arm; 313. Connecting arm; 320. Buffer roller assembly; 321. Buffer frame; 322. Buffer roller; 323. Limit switch; 341. Cylinder; 342. Air pressure stabilizing device; 3421. Gas supply source; 3422. Inlet pressure regulating valve; 3423. Outlet pressure regulating valve; 100. Goods; 200. Packaging Material Rolls. Detailed Implementation

[0022] The present invention will now be described in detail with reference to the accompanying drawings.

[0023] Example 1, as Figure 1 and Figure 2 As shown, in one embodiment of this application, the wrapping equipment includes: A packaging material supply mechanism 1, which is configured to output packaging materials externally; Packaging material application mechanism 2, which is configured to wrap the packaging material output by the packaging material supply mechanism 1 around the outside of the goods 100; Packaging material temporary storage mechanism 3, wherein a temporary storage space 30 is formed in the packaging material temporary storage mechanism 3, wherein the temporary storage space 30 is configured to temporarily store the packaging materials output by the packaging material supply mechanism 1; The packaging material storage mechanism 3 is configured to receive the packaging materials output by the packaging material supply mechanism 1 and output the packaging materials to the packaging material use mechanism 2; In addition, the packaging material temporary storage mechanism 3 is configured to reduce the amount of packaging material stored in the temporary storage space 30 when the amount of packaging material used by the packaging material using mechanism 2 is greater than the amount of packaging material output by the packaging material supply mechanism 1; the packaging material temporary storage mechanism 3 is also configured to increase the amount of packaging material stored in the temporary storage space 30 when the amount of packaging material used by the packaging material using mechanism 2 is less than the amount of packaging material output by the packaging material supply mechanism 1.

[0024] Specifically, the stretch wrapping equipment includes a packaging material supply mechanism 1 and a packaging material application mechanism 2. The packaging material supply mechanism 1 continuously conveys the packaging material, while the packaging material application mechanism 2 wraps the packaging material around the outside of the goods 100. The specific structural forms of the packaging material supply mechanism 1 and the packaging material application mechanism 2 can adopt the corresponding structural configurations in conventional stretch wrapping equipment, and are not limited here.

[0025] The wrapping equipment provided in this application is also additionally equipped with a packaging material storage mechanism 3. The packaging material output by the packaging material supply mechanism 1 first enters the packaging material storage mechanism 3, and then the packaging material is transported to the packaging material use mechanism 2 after passing through the packaging material storage mechanism 3.

[0026] The temporary storage space 30 formed in the packaging material temporary storage mechanism 3 can store a certain amount of packaging materials, and the length of the packaging materials stored in the temporary storage space 30 can be no less than 0.5 times the minimum side length of the goods 100.

[0027] During use, the packaging material application mechanism 2 wraps the packaging material around the outer periphery of the goods 100. Taking the cross-section of the goods 100 as rectangular and the packaging material as a packaging film as an example, the usage process of the packaging material temporary storage mechanism 3 will be explained.

[0028] During the wrapping process, the goods 100 and the packaging material roll 200 of the packaging material supply mechanism 1 rotate relative to each other. When the edges of the goods 100 come into contact with the packaging material, the wrapping path at the edges changes abruptly (the linear velocity at the contact point increases instantaneously), causing a sudden increase in the amount of packaging material used. At this time, the amount of packaging material supplied by the packaging material supply mechanism 1 cannot match the amount of packaging material used in time. The packaging material stored in the temporary storage space 30 can supplement the output, and the amount of packaging material stored in the temporary storage space 30 decreases to compensate for the difference between the amount of packaging material used and the amount of packaging material supplied in a timely manner.

[0029] As the goods 100 and the packaging roll 200 continue to rotate relative to each other, the edges of the packaging material will gradually move away from the packaging roll 200, and the packaging material will gradually approach the side wall surface of the goods 100 to be wrapped. During this process, the amount of packaging material used by the packaging material using mechanism 2 gradually decreases. During the process of the continuous decrease in the amount of packaging material used, there is a stage where the amount of packaging material supplied by the packaging material supply mechanism 1 is greater than the amount of packaging material used. During this stage, the excess packaging material supplied by the packaging material supply mechanism 1 will be stored in the temporary storage space 30.

[0030] In this way, after the next corner of the goods 100 comes into contact with the packaging material, the newly contacted corner will increase the speed at which the packaging material moves, and will again compensate the packaging material outward through the temporary storage space 30.

[0031] During the continuous wrapping of goods 100, different edges alternately contact the packaging material, causing the packaging material demand to change alternately. As the packaging material demand changes, the temporary storage space 30 of the packaging material storage mechanism 3 can compensate for the change in packaging material demand. This can prevent the packaging material from being overstretched or understretched, thereby more effectively reducing the tension variation of the packaging material and improving the quality of wrapping.

[0032] In one embodiment, the packaging material application mechanism 2 can adopt the winding structure in conventional cantilever winding packaging equipment or pallet winding packaging equipment.

[0033] For example: Figure 1 and Figure 2 As shown, the packaging material application mechanism 2 adopts the winding structure of a cantilever winding packaging equipment. Specifically, the packaging material application mechanism 2 includes a support frame 21, a rotating frame 22, and a first rotating drive motor 23. The rotating frame 22 is rotatably mounted on the support frame 21, and the first rotating drive motor 23 is configured to drive the rotating frame 22 to rotate. The packaging material supply mechanism 1 and the packaging material temporary storage mechanism 3 are mounted on the rotating frame 22. The rotating frame 22 is configured to rotate around the goods 100 so that the packaging material is wound onto the goods 100.

[0034] Specifically, the support frame 21 is fixedly installed on the foundation of the packaging plant as a support structure, and the rotating frame 22 is rotatably mounted on the support frame 21 through a rotating connection structure such as the rotating shaft 311. The first rotating drive motor 23 drives the rotating frame 22 to rotate around the rotation center on the support frame 21.

[0035] The packaging material supply mechanism 1 and the packaging material temporary storage mechanism 3 are mounted on the rotating frame 22. During the rotation of the rotating frame 22, the packaging material supply mechanism 1 and the packaging material temporary storage mechanism 3 will rotate around the rotation center and around the outer periphery of the goods 100.

[0036] For example: Figure 3 and Figure 4 As shown, the packaging material application mechanism 2 adopts the winding structure of a cantilever winding packaging equipment. Specifically, the packaging material application mechanism 2 includes a rotating seat 24 and a second rotary drive motor 25. The second rotary drive motor 25 is configured to drive the rotating seat 24 to rotate. The packaging material supply mechanism 1 and the packaging material temporary storage mechanism 3 are arranged on one side of the rotating seat 24. The rotating seat 24 is configured to drive the goods 100 to rotate so that the packaging material is wound onto the goods 100.

[0037] Specifically, the rotating seat 24 is used to carry the goods 100 and drive the goods 100 to rotate around the rotation center. The packaging material supply mechanism 1 and the packaging material temporary storage mechanism 3 are arranged on one side of the rotating seat 24 and do not rotate with the rotating seat 24.

[0038] In another embodiment, the packaging material application mechanism 2 can adopt the film supply structure of a cantilever wrapping device or a pallet wrapping device in conventional technology.

[0039] For example, the packaging material supply mechanism 1 includes an unwinding shaft 11 and an unwinding motor 12. The unwinding shaft 11 is configured to support the packaging material roll 200, and the unwinding motor 12 is configured to drive the packaging material roll 200 on the unwinding shaft 11 to unwind and output the packaging material.

[0040] Specifically, taking packaging film as an example, the packaging film roll 200 is mounted on the unwinding shaft 11. Driven by the unwinding motor 12, the packaging film (packaging material) output by the packaging roll 200 is pulled outward to achieve unwinding. The unwound packaging material enters the packaging material storage mechanism 3.

[0041] In practical use, the unwinding motor 12 can directly drive the unwinding shaft 11 to rotate and achieve unwinding. Specifically, during the process of the packaging material being wrapped around the outside of the goods 100, the unwinding motor 12 synchronously drives the unwinding shaft 11 to rotate and achieve the unwinding process of the packaging material roll 200. Alternatively, the packaging material supply mechanism 1 also includes an unwinding roller 13, and the unwinding motor 12 is configured to drive the unwinding roller 13 to rotate. Specifically, the outer periphery of the unwinding roller 13 is wrapped with a rubber sleeve to increase the friction between it and the packaging material. In this way, the unwinding motor 12 drives the unwinding roller 13 to rotate, and the unwinding roller 13 pulls the packaging material to move, so that the packaging material roll 200 can rotate on the unwinding shaft 11 to achieve the unwinding process. The specific structural configuration of the packaging material supply mechanism 1 for achieving the unwinding of the packaging material roll 200 is not limited here.

[0042] In one embodiment of this application, such as Figures 5-7 As shown, the packaging material temporary storage mechanism 3 includes: a mounting bracket 31 and a buffer component 32; The buffer assembly 32 includes two sets of buffer roller groups 320. Each set of buffer roller groups 320 includes a buffer frame 321 and at least one buffer roller 322. The buffer roller 322 is rotatably mounted on the buffer frame 321. The temporary storage space 30 is formed between the two sets of buffer roller groups 320, and the two buffer racks 321 can slide relative to each other on the mounting bracket 31.

[0043] Specifically, the mounting bracket 31 is equipped with two sets of buffer roller groups 320 that can be relatively close to or far apart. The distance between the two sets of buffer roller groups 320 can effectively store a sufficient amount of packaging material to meet the changing requirements of the amount of packaging material used when wrapping goods 100.

[0044] Furthermore, the mounting bracket 31 is provided with a slide rail 33, and at least one of the buffer racks 321 is slidably mounted on the slide rail.

[0045] Specifically, the slide rail 33 provided on the mounting bracket 31 can meet the requirements for guiding the sliding of the buffer rack 321, ensuring that the buffer rack 321 can slide smoothly. As needed, one buffer rack 321 can be fixedly mounted on the mounting bracket 31, and the other buffer rack 321 can be slidably mounted on the mounting bracket 31 via the slide rail 33; or, both buffer racks 321 can be slidably mounted on the mounting bracket 31 via the slide rail 33.

[0046] Furthermore, multiple buffer rollers 322 are arranged side by side on the buffer rack 321; A temporary storage space 30 is formed between the two sets of buffer rollers 320 to guide the packaging material to meander around the buffer rollers 322.

[0047] Specifically, in order to effectively reduce the overall volume of the packaging material storage mechanism 3 while ensuring that the packaging material storage mechanism 3 can store a sufficient amount of packaging material in the storage space 30, multiple buffer rollers 322 can be configured in each buffer roller group 320. The packaging material can alternately travel on the buffer rollers 322 in the two buffer roller groups 320 to effectively increase the storage capacity of the packaging material.

[0048] In one embodiment, the buffer assembly 32 includes a tension control component 34 configured to adjust the distance between the two buffer racks 321 according to the tension of the packaging material.

[0049] Specifically, the tension control component 34 can apply an external force to the sliding buffer frame 321 so that the buffer frame 321 can slide relative to the required amount of packaging material. The tension control component 34 adjusts the force on the buffer frame 321 to match the tension generated when the packaging material is wrapped, so as to achieve tension control of the output packaging material.

[0050] In actual use, the tension control component 34 can take various structural forms. In some embodiments, the tension control component 34 is a magnetic damper connected to the buffer rack 321. The magnetic damper can apply a relatively constant resistance to the buffer rack 321. Under the action of the magnetic damper, the packaging material storage mechanism 3 has the function of adjusting the tension of the output packaging material, so that the tension of the output packaging material is maintained within a reasonable fluctuation range, thereby reducing the fluctuation range of the tension.

[0051] In some embodiments, the tension control component 34 is a return spring connected to the buffer rack 321. Specifically, the return spring can apply a relatively constant spring force to the buffer rack 321. Under the action of the return spring, the packaging material temporary storage mechanism 3 has the function of adjusting the tension of the output packaging material, so that the tension of the output packaging material is maintained within a reasonable fluctuation range, thereby reducing the fluctuation range of tension.

[0052] In some embodiments, a limit switch 323 is provided on one side of the sliding buffer rack 321 to form a switch for controlling the movement stroke of the buffer rack 321. The limit switch 323 is arranged at the position where the distance between the two buffer racks 321 is the greatest. When the buffer racks 321 move away from each other, the limit switch 323 corresponding to the buffer rack 321 is triggered, and the limit switch 323 sends a signal to the controller, which will reduce the speed of the unwinding motor 12.

[0053] In some embodiments, such as Figure 8As shown, the tension control component 34 includes a cylinder 341; the tension control component 34 also includes a pressure stabilizing device 342, which is connected to the cylinder 341 and is configured to stabilize the pressure inside the cylinder 341; the cylinder 341 is connected to the buffer frame 321.

[0054] Specifically, the tension control component 34 includes a cylinder 341 and a pressure stabilizing device 342. The pressure stabilizing device 342 maintains the air pressure within the cylinder 341 within a set pressure range, thus allowing the cylinder 341 to apply a relatively stable thrust to the buffer rack 321. During the packaging material output process, when the packaging material supply from the packaging material roll 200 does not match the packaging material usage, the packaging material section located between the packaging material usage mechanism 2 and the goods 100 will experience tension changes, thereby causing the buffer rack 321 to move. Because the air pressure within the cylinder 341 remains basically stable under the action of the pressure stabilizing device 342, the distance the buffer rack 321 moves allows the packaging material tension to return to the set tension range.

[0055] Furthermore, the physical manifestation of the pressure stabilizing device 342 can take many different structural forms. For example: Figure 8 As shown, the air pressure stabilizing device 342 includes an air storage tank, and the cylinder 341 is connected to the air storage tank.

[0056] Specifically, cylinder 341 can be a single-acting cylinder, and the gas volume of the gas tank is much larger than the gas volume of cylinder 341. This way, when cylinder 341 extends or retracts due to the external force of the buffer frame 321, the gas pressure inside cylinder 341 can be maintained relatively constant under the action of the gas tank. Specifically, when the piston rod of cylinder 341 extends, gas from the gas tank is added to the cylinder body of cylinder 341; when the piston rod retracts, gas in cylinder 341 leaks out into the gas tank. The change in gas volume in cylinder 341 has a relatively small impact on the gas pressure inside the gas tank, thus maintaining a relatively constant gas pressure inside cylinder 341 is achieved through the gas tank. The volume ratio of the gas tank to cylinder 341 can be set according to the tension variation of the packaging material and is not limited here.

[0057] Furthermore, the gas storage tank is also connected to a gas supply source 34201 via a control valve. The gas supply source 34201 can replenish gas into the gas storage tank when the pressure decreases. The gas supply source 34201 can be an air pump. The control valve includes an inlet pressure control valve 34202, which is connected between the gas supply source 34201 and the gas storage tank to control the filling pressure in the tank. Furthermore, the control valve also includes an exhaust pressure control valve 34203, which can open when it is necessary to reduce the pressure in the gas storage tank to release gas. The inlet pressure control valve 34202 and the exhaust pressure control valve 34203 can be proportional valves or pressure regulating valves.

[0058] Or, such as Figure 9 As shown, the air pressure stabilizing device 342 includes an air supply source 3421, an inlet pressure regulating valve 3422, and an outlet pressure regulating valve 3423. The air supply source 3421 is connected to the cylinder 341 through the inlet pressure regulating valve 3422, and the outlet pressure regulating valve 3423 is connected to the cylinder 341. Specifically, the air supply source 3421 supplies air to the cylinder 341 through the inlet pressure regulating valve 3422. When the air pressure inside the cylinder 341 is greater than a set value, the gas inside the cylinder 341 is discharged to the outside through the outlet pressure regulating valve 3423 to maintain the air pressure inside the cylinder 341 in a basically constant state.

[0059] In some embodiments, the tension control component 34 is connected between the two buffer racks 321.

[0060] Specifically, the tension control component 34 is directly connected between the two buffer frames 321. Taking cylinder 341 as an example, the piston rod of cylinder 341 is connected to one of the buffer frames 321, and the cylinder body of cylinder 341 is connected to the other buffer frame 321.

[0061] In some embodiments, such as Figure 7 As shown, the mounting bracket 31 is provided with a rotatable shaft 311, and a rotating arm 312 is provided on the shaft 311. Connecting arms 313 are respectively hinged to both ends of the rotating arm 312. The shaft 311 is located between two buffer frames 321, and the connecting arm 313 is hinged to the corresponding buffer frame 321. The tension control component 34 is connected to one of the buffer frames 321.

[0062] Specifically, the tension control component 34 is hinged to one of the buffer frames 321, and the two buffer frames 321 are connected by a connecting arm 313 and a rotating arm 312 to allow the two buffer frames 321 to move closer or further apart.

[0063] Example 2, as Figures 1-4As shown, another embodiment of the present application provides a wrapping device comprising: A packaging material supply mechanism 1 is configured to output packaging material; the packaging material supply mechanism 1 includes an unwinding shaft 11 and an unwinding motor 12, the unwinding shaft 11 is configured to support a packaging material roll 200, and the unwinding motor 12 is configured to drive the packaging material roll 200 on the unwinding shaft 11 to unwind and output the packaging material.

[0064] Packaging material application mechanism 2 is configured to wrap the packaging material output by the packaging material supply mechanism 1 around the outside of the goods 100.

[0065] Among them, such as Figure 1 and Figure 2 As shown, the packaging material application mechanism 2 includes a support frame 21, a rotating frame 22, and a first rotary drive motor 23. The rotating frame 22 is provided with an output guide roller and is rotatably mounted on the support frame 21. The first rotary drive motor 23 is configured to drive the rotating frame 22 to rotate. The packaging material supply mechanism 1 is mounted on the rotating frame 22. The rotating frame 22 is configured to rotate around the goods 100 so that the packaging material is guided out via the output guide roller and wound onto the goods 100. The measuring component 14 is mounted on the rotating frame 22 so that the rotating frame 22 rotates.

[0066] In addition, such as Figure 3 and Figure 4 As shown, the packaging material application mechanism 2 includes a rotating seat 24 and a second rotary drive motor 25. The second rotary drive motor 25 is configured to drive the rotating seat 24 to rotate. The packaging material supply mechanism 1 is arranged on one side of the rotating seat 24. The rotating seat 24 is configured to drive the goods 100 to rotate so that the packaging material is wrapped around the goods 100. The measuring component 14 is arranged on one side of the rotating seat 24.

[0067] In one embodiment of this application, in order to dynamically control the unwinding speed and thus control the tension of the packaging material wrapped around the goods 100, such as... Figure 2 and Figure 4 As shown, the wrapping equipment also includes a measuring component 14, which performs corresponding measurements and dynamically adjusts the speed of the unwinding motor 12 based on the measured values. The measuring component 14 remains stationary relative to the packaging roll 200, but can rotate relative to the goods 100. Thus, during the wrapping of the goods 100, the measuring component 14 changes position relative to the goods 100 to detect different measurement parameters.

[0068] Specifically, the wrapping equipment is typically equipped with a controller to control the operation of the relevant electrical components. The controller is electrically connected to at least the unwinding motor 12 and the measuring component 14. The controller dynamically adjusts the speed of the unwinding motor 12 based on the values ​​measured by the measuring component 14.

[0069] There are various forms of specific parameters that the measuring component 14 can measure. For example, the measuring component 14 can measure the change in its relative position with respect to the goods 100, or the measuring component 14 can measure the speed of the packaging material output by the packaging material supply mechanism 1, or the measuring component 14 can measure the instantaneous speed of the outer surface of the goods 100 corresponding to the part covered by the packaging material.

[0070] The following examples, in conjunction with the accompanying drawings, illustrate the points.

[0071] In one embodiment, such as Figure 10 As shown, the measuring component 14 is configured to measure the distance to the cargo 100 to trigger the unwinding motor 12 to adjust its speed.

[0072] Specifically, during use, as the goods 100 rotates relative to the packaging roll 200, the measuring component 14 also rotates relative to the goods 100. The measuring component 14 is used to detect the distance to the surface of the goods 100 in real time and transmit the distance signal to the controller, which triggers the unwinding motor 12 to adjust the speed according to the distance change.

[0073] Taking the example where the goods 100 remain stationary while the measuring component 14 and the packaging material supply mechanism 1 rotate, during the process of wrapping the packaging material around the goods 100, the measuring component 14 rotates relative to the goods 100. During this rotation, the measuring component 14 can detect the distance Δr between the corresponding portion and the outer surface of the goods 100. t Furthermore, the distance detected by the measuring component 14 is in a dynamic process of rotation, thereby enabling the real-time acquisition of the distance value between the cargo 100 and the measuring component 14.

[0074] Since the distance r0 between the measuring component 14 and its own center of rotation is constant, the distance r0 between the corresponding winding portion and the surface of the cargo 100 can be calculated by measuring the distance between the measuring component 14 and the winding portion. t Meanwhile, the angular velocity of the measuring component 14 relative to the cargo 100 is known. Thus, the instantaneous velocity of the winding part can be calculated based on the angular velocity of the rotation and the calculated distance of the winding part from the center of rotation. The speed of the unwinding motor 12 can be dynamically adjusted based on the calculated instantaneous velocity.

[0075] The physical manifestation of the measuring component 14 can be a device used in conventional technologies such as a rangefinder for measuring distance.

[0076] In one embodiment, such as Figure 1 As shown, the measuring component 14 is configured to measure the dimensions of the outer contour of the cargo 100 to trigger the unwinding motor 12 to adjust its rotational speed.

[0077] Specifically, during use, as the goods 100 rotates relative to the measuring component 14, the length and width of the goods 100's vertical projection are different. During the rotation and winding process, the length of the packaging material required for different side walls is different. By measuring the outer contour dimensions of the goods 100, the speed of the unwinding motor 12 can be adjusted to meet the packaging material requirements of the corresponding side wall of the goods 100 when the goods 100 rotates relative to the packaging material roll 200 to the corresponding side wall in the winding and packaging state.

[0078] The specific adjustment process is as follows: after the outer contour dimensions of the goods 100 are obtained by measurement, the distance of each side wall of the goods 100 from the rotation center can be calculated. Then, based on the relative rotation angle of the goods 100 with respect to the packaging roll 200, the distance between the rotation center and the corresponding position of the side wall of the goods 100 is calculated. Based on the rotational angular velocity of the goods 100 with respect to the packaging roll 200, the instantaneous velocity of the outer surface of the goods 100 corresponding to the part covering the packaging material is calculated. This instantaneous velocity is used as the required amount of packaging material for the unwinding motor 12 to adjust its speed.

[0079] Or, such as Figure 3 As shown, during the process of the packaging material being wound around the surface of the goods 100, the goods 100 rotates relative to the packaging material roll 200. Typically, the packaging material is supported by the corresponding upright corners of the goods 100 so that it wraps around the corresponding sidewall. As the goods 100 continues to rotate, when the packaging material wraps around another sidewall, the other upright corner of the goods 100 will support the packaging material. Therefore, the required amount of packaging material for the corresponding sidewall of the goods 100 can be obtained by measuring the relative position of the goods 100 and the packaging material roll 200, based on the measured dimensions of the outer contour of the goods 100. For example, taking the goods 100 as a cuboid, its vertical projection is a rectangle. During the rotation of the goods 100 relative to the packaging material roll 200, when the sidewall containing the long side of the goods 100 is in a wrapped packaging state, the speed of the unwinding motor 12 is adjusted so that the unwinding speed of the unwinding motor 12 meets the packaging material requirements of the sidewall containing the long side of the goods 100. When the goods 100 rotates to the side wall where the short side is located and is in a wrapped packaging state, the speed of the unwinding motor 12 is readjusted to meet the packaging material requirements of the side wall where the short side of the goods 100 is located. During the process of unwinding and feeding the corresponding side wall of the goods 100, the speed of the unwinding motor 12 can be uniformly used to supply the packaging material outward.

[0080] The physical entity representing the measuring component 14 can be a conventional measuring device such as an image acquisition device or a rangefinder, and there are no restrictions on this.

[0081] In one embodiment, the measuring component 14 can be a speed measuring device, which can directly measure the instantaneous speed of the packaging material output from the packaging material supply mechanism 1, or the measuring component 14 can directly measure the instantaneous speed of the outer surface of the goods 100 corresponding to the portion covered by the packaging material.

[0082] Specifically, such as Figure 11 As shown, the measuring component 14 can directly measure the instantaneous speed of the packaging material output from the packaging material supply mechanism 1. The instantaneous speed output by the packaging material supply mechanism 1 is the dynamic packaging material demand during the wrapping process of the goods 100. The rotational speed of the unwinding motor 12 is adjusted according to the instantaneous speed of the packaging material output by the packaging material supply mechanism 1 as measured by the measuring component 14. The measuring component 14 is aligned with the part of the packaging material output from the packaging material supply mechanism 1 to measure the instantaneous speed of the packaging material output.

[0083] Or, such as Figure 12 As shown, the measuring component 14 can directly measure the instantaneous speed of the outer surface of the goods 100 corresponding to the portion covered by the packaging material. The measuring component 14 is aligned with the rotation center to measure the instantaneous speed of the outer surface of the goods 100 corresponding to the portion covered by the packaging material, and the rotational speed of the unwinding motor 12 is adjusted according to the measured instantaneous speed.

[0084] Example 3: Based on Example 2 above, this application also provides a wrapping method, including: By measuring the required amount of packaging material, the winding packaging equipment adjusts the output speed of the packaging material roll according to the required amount of packaging material during the process of winding the packaging material onto the outer surface of the goods.

[0085] Specifically, the required amount of packaging material for goods during wrapping is measured or calculated by measuring components. Then, during the wrapping process, the speed of the unwinding motor is adjusted according to the relative position changes between the goods and the packaging material roll, thereby adjusting the output speed of the packaging material.

[0086] In one embodiment, the required amount of packaging material is obtained by measurement, specifically: The wrapping equipment adjusts the output speed of the wrapping material roll by measuring the instantaneous speed of the outer surface of the goods corresponding to the part covered by the wrapping material.

[0087] Specifically, as the goods rotate relative to the packaging roll, the amount of packaging material required varies depending on the position the goods rotate to. By measuring the instantaneous speed of the outer surface of the goods corresponding to the part covered by the packaging material through the measuring components, the rotation of the unwinding motor can be adjusted according to this instantaneous speed, thereby adjusting the speed at which the packaging roll outputs the packaging material.

[0088] Specifically, this involves measuring and calculating the distance r between the outer surface of the goods, corresponding to the portion covered by the packaging material, and the rotation center of the wrapping equipment.t And based on the rotational angular velocity ω of the goods relative to the packaging roll. t Calculate the instantaneous velocity v of the part of the cargo's outer surface corresponding to the area covered by the packaging material. t Based on the calculated v t To adjust the speed at which the packaging material is output by the packaging material mechanism.

[0089] Specifically, by measuring the distance between the corresponding part of the outer surface of the goods covered by the packaging material and the center of rotation, the distance r between the corresponding part of the outer surface of the goods covered by the packaging material and the center of rotation can be calculated. t Based on the rotational angular velocity ω of the goods relative to the packaging roll t Calculate the instantaneous velocity v of the part of the cargo's outer surface corresponding to the area covered by the packaging material. t .

[0090] The distance r between the outer surface of the goods and the part covered by the packaging material and the rotation center of the wrapping equipment is measured and calculated. t Specifically, the measuring component is a rangefinder, which measures the distance Δr between the rangefinder and the corresponding part of the outer surface of the goods covered by the packaging material. t And according to formula r t = r0-Δr t Calculate r t Where r0 is the distance between the rangefinder and the center of rotation.

[0091] Specifically, the distance between the rangefinder and the center of rotation is fixed. As the goods rotate relative to the rangefinder, the rangefinder measures the distance between itself and the surface of the goods in the direction of the center of rotation, thereby calculating the distance between the outer surface of the goods and the part covered by the packaging material from the center of rotation of the wrapping equipment.

[0092] The specific process is as follows: Measure and calculate the distance r between the outer surface of the goods corresponding to the part covered by the packaging material and the rotation center of the wrapping equipment. t And based on the rotational angular velocity ω of the goods relative to the packaging roll. t And according to formula v t =ω t ×r t Calculate the instantaneous velocity v of the part of the cargo's outer surface corresponding to the area covered by the packaging material. t Based on the calculated v t To adjust the speed at which the packaging material is output by the packaging material mechanism.

[0093] The measuring component measures the distance towards the center of rotation. By measuring the distance between the measuring component and the surface of the goods, the distance r from the point on the outer surface of the goods corresponding to the area covered by the packaging material to the center of rotation of the wrapping equipment can be calculated. t Then, based on the rotational angular velocity ω of the goods relative to the packaging roll... tAccording to formula v t =ω t ×r t Calculate the instantaneous velocity v of the outer surface of the cargo corresponding to the part covered by the packaging material. t .

[0094] The distance between the measuring component and the rotation center remains constant, and r0 is the distance between the rangefinder and the rotation center. The point where the line connecting the measuring component and the rotation center intersects the outer surface of the goods represents the distance to the corresponding packaging material covering part of the goods' outer surface. The measuring component can directly measure the distance Δr between itself and the corresponding packaging material covering part of the goods' outer surface. t The distance Δr between the measuring component and the corresponding area of ​​the packaging material covering the outer surface of the goods is measured. t And according to formula r t =r0-Δr t Calculate r t .

[0095] In another embodiment, such as Figure 13 As shown, in order to dynamically control the unwinding speed and thus the tension of the packaging material wrapped around the goods, the measuring component can measure the dimensions of the outer contour of the goods to calculate the distance from the center of rotation to the corresponding sidewall of the goods. Then, based on the rotation angle and rotation speed of the goods relative to the packaging material roll, the instantaneous speed of the outer surface of the goods corresponding to the part covering the packaging material is calculated, and the rotation of the unwinding motor is adjusted accordingly.

[0096] Taking an image acquisition device as an example, the measuring component can remain stationary relative to the goods during use. For instance, the image acquisition device can be positioned above the wrapping area formed by the wrapping equipment (it can be installed on top of the support frame of the wrapping equipment). The image acquisition device takes pictures of the goods within the wrapping area to acquire images of the goods. Through image recognition, the side length of the goods and the distance of the corresponding side of the goods from the wrapping center can be obtained. During the wrapping process, the goods and the packaging roll rotate relative to each other. Based on the distance of the outer surface of the goods corresponding to the part covered by the packaging material from the wrapping center, and the current angular velocity of the relative rotation, the instantaneous velocity of the outer surface of the goods corresponding to the part covered by the packaging material can be calculated.

[0097] Specific wrapping methods include: during the process of wrapping the packaging material around the outer surface of the goods by the wrapping equipment, the wrapping equipment adjusts the output speed of the packaging material roll by measuring and calculating the instantaneous speed of the outer surface of the goods corresponding to the part covered by the packaging material.

[0098] Specifically, the dimensions of the outer contour of the goods are measured using an image acquisition device to calculate the distance L from the rotation center to the corresponding sidewall of the goods; based on the rotation angle α of the goods relative to the packaging roll, the distance r from the rotation center of the wrapping equipment to the part of the goods' outer surface corresponding to the area covered by the packaging material is calculated. t .

[0099] Specifically, since an image of the goods is captured by an image acquisition device, the relative position of the image acquisition device and the rotation center is determined, and the position of the rotation center remains stationary. When the goods rotate relative to the packaging roll, the part where the line connecting the packaging output position and the rotation center intersects the side wall of the goods is the part covered by the packaging material. The distance of this part from the rotation center can be calculated using the captured image. Furthermore, the rotational angular velocity of the goods relative to the packaging roll is known. Thus, based on the rotation angle α and the distance L from the rotation center to the corresponding side wall of the goods, the distance r of the outer surface of the goods corresponding to the part covered by the packaging material from the rotation center of the wrapping equipment can be calculated. t .

[0100] In another embodiment of this application, such as Figure 11 and Figure 12 As shown, in order to dynamically control the unwinding speed and thus control the tension of the packaging material wrapped around the outside of the goods, the packaging material supply mechanism also includes a speed sensor.

[0101] The speed sensor is configured to measure the instantaneous speed of the packaging material output by the packaging material supply mechanism; or, the speed sensor is configured to measure the instantaneous speed of the outer surface of the goods corresponding to the portion covered by the packaging material.

[0102] Specifically, such as Figure 11 As shown, the speed sensor can directly measure the instantaneous speed of the packaging material output from the packaging material supply mechanism. Since the instantaneous speed of the packaging material output from the packaging material supply mechanism matches the demand during the winding of goods, the speed of the unwinding motor can be adjusted according to the instantaneous speed of the packaging material output to match the dynamic changes in the demand for packaging material during the winding and packaging process.

[0103] Similarly, such as Figure 12 As shown, the speed sensor can also directly measure the instantaneous speed of the corresponding part of the outer surface of the goods. Specifically, the speed sensor measures the speed in the direction of the rotation center. The speed sensor measures the instantaneous speed of the corresponding part during the rotation of the goods. The instantaneous speed of this part is the instantaneous speed of the part of the outer surface of the goods corresponding to the covering material. The speed of the unwinding motor can be adjusted according to the measured instantaneous speed.

[0104] In another embodiment of this application, such as Figure 10 As shown, the required amount of packaging materials is obtained through measurement, specifically: By measuring the dimensions of the cargo's outer contour, the distance L from the center of rotation to the corresponding vertical angle of the cargo is calculated. This is based on the angular velocity ω of the cargo relative to the packaging roll. t Calculate the required amount of packaging materials.

[0105] Specifically, as the packaging material is wrapped around the surface of the goods, the goods rotate relative to the packaging material roll. Usually, the corresponding upright corners of the goods support the packaging material so that the packaging material wraps around the corresponding side wall. As the goods continue to rotate, when the packaging material wraps around another side wall, the other upright corner of the goods will support the packaging material. Therefore, the distance from the center of rotation to the corresponding upright corner of the goods can be calculated by measuring the dimensions of the outer contour of the goods. The required amount of packaging material can be calculated by using the distance between the upright corner and the center of rotation, combined with the rotational angular velocity of the goods relative to the packaging material roll.

[0106] In another embodiment of this application, the required amount of packaging material is obtained by measurement, specifically by measuring the relative position of the goods and the packaging material roll to obtain the required amount of packaging material for wrapping the corresponding sidewalls of the goods.

[0107] Specifically, as the goods rotate relative to the packaging roll, the corresponding upright corners of the goods support the packaging so that the packaging wraps around the corresponding sidewalls. As the goods continue to rotate, when the packaging wraps around another sidewall, the other upright corner of the goods will support the packaging. Therefore, the distance from the center of rotation of different upright corners of the goods can be calculated by measuring the dimensions of the outer contour of the goods. Then, based on the relative position of the goods and the packaging roll, the required amount of packaging material for the corresponding sidewalls of the goods can be obtained.

[0108] For example, taking the goods as a cuboid, the vertical projection of the goods is rectangular. During the rotation of the goods relative to the packaging material roll, when the long side of the goods is in a wrapped packaging state, the speed of the unwinding motor is adjusted to ensure that the unwinding speed meets the packaging material requirements of the long side of the goods. When the goods rotate to the point where the short side is in a wrapped packaging state, the speed of the unwinding motor is adjusted again to meet the packaging material requirements of the short side of the goods. During the unwinding and feeding process of the corresponding side of the goods, the speed of the unwinding motor can be uniformly supplied with packaging material.

[0109] Based on the above embodiments, the wrapping equipment in this embodiment may further include the packaging material storage mechanism described in Embodiment 1. During use, the packaging material storage mechanism, in conjunction with the measuring component, allows the measuring component to dynamically adjust the speed of the unwinding motor by measuring the distance to the goods. Simultaneously, the packaging material storage mechanism can compensate for changes in the tension of the packaging material by outwardly conveying or buffering packaging material at multiple unwinding points. While the controller adjusts the unwinding motor speed using the measuring component, there is a certain lag. However, by using the packaging material storage mechanism to dynamically compensate for the difference between the amount of packaging material used and the amount supplied based on the tension, the variation in packaging material tension can be better reduced.

Claims

1. A wrapping method, characterized in that, include: By measuring the required amount of packaging material, the speed at which the packaging roll is output is adjusted according to the required amount of packaging material during the process of wrapping the packaging material around the outer surface of the goods.

2. The wrapping method according to claim 1, characterized in that, The required quantity of packaging materials is determined by measurement, specifically: The output speed of the packaging roll is adjusted by measuring the instantaneous speed of the outer surface of the goods corresponding to the part covered by the packaging material.

3. The wrapping method according to claim 2, characterized in that, The instantaneous velocity of the outer surface of the goods corresponding to the area covered by the packaging material, as measured, is specifically as follows: Measure and calculate the distance r from the outer surface of the goods corresponding to the part covered by the packaging material to the center of the winding rotation. t And based on the rotational angular velocity ω of the goods relative to the packaging roll. t Calculate the instantaneous velocity v of the outer surface of the goods corresponding to the part covered by the packaging material. t Based on the calculated v t To adjust the speed at which the packaging material is output by the packaging material mechanism.

4. The wrapping method according to claim 3, characterized in that, The distance r between the outer surface of the goods, corresponding to the part covered by the packaging material, and the center of the winding rotation is measured and calculated. t Specifically: The distance Δr between the outer surface of the goods and the corresponding part of the packaging material is measured using a rangefinder. t And according to formula r t = r0-Δr t Calculate r t Where r0 is the distance between the rangefinder and the center of rotation.

5. The wrapping method according to claim 3, characterized in that, The distance r between the outer surface of the goods, corresponding to the part covered by the packaging material, and the center of the winding rotation is measured and calculated. t Specifically: The distance L from the center of rotation to the corresponding sidewall of the cargo is calculated by measuring the dimensions of the cargo's outer contour; the distance r from the outer surface of the cargo corresponding to the portion covered by the packaging material to the winding rotation center is calculated based on the rotation angle α of the cargo relative to the packaging material roll. t .

6. The wrapping method according to claim 2, characterized in that, The instantaneous velocity of the outer surface of the goods corresponding to the area covered by the packaging material, as measured, is specifically as follows: The instantaneous velocity of the outer surface of the goods corresponding to the part covered by the packaging material is directly measured.

7. The wrapping method according to claim 1, characterized in that, The required quantity of packaging materials is determined by measurement, specifically: The instantaneous speed of the packaging material output from the wrapping equipment is directly measured, and the output speed of the packaging material roll is adjusted according to the measured instantaneous speed of the packaging material.

8. The wrapping method according to claim 1, characterized in that, The required quantity of packaging materials is determined by measurement, specifically: By measuring the dimensions of the cargo's outer contour, the distance L from the center of rotation to the corresponding vertical angle of the cargo is calculated. This is based on the angular velocity ω of the cargo relative to the packaging roll. t Calculate the required amount of packaging materials.

9. The wrapping method according to claim 1, characterized in that, The required quantity of packaging materials is determined by measurement, specifically: The required amount of packaging material for wrapping the corresponding sidewalls of the cargo is determined by measuring the relative position of the cargo and the packaging material roll.

10. A wrapping device for implementing the wrapping method as described in any one of claims 1-9, characterized in that, include: A packaging material supply mechanism, the packaging material supply mechanism including an unwinding motor configured to unwind a packaging material roll, and the packaging material supply mechanism configured to output packaging material outward; A packaging material application mechanism, configured to wrap the packaging material output by the packaging material supply mechanism around the outside of the goods; A measuring component is configured to measure changes in position relative to the goods; the packaging material supply mechanism is configured to remain stationary relative to the measuring component. A controller is connected to both the measuring component and the unwinding motor, and the controller is configured to adjust the speed of the unwinding motor based on the measurement values ​​of the measuring component.

11. A wrapping device for implementing the wrapping method as described in any one of claims 1-9, characterized in that, include: A packaging material supply mechanism, the packaging material supply mechanism including an unwinding motor configured to unwind a packaging material roll, and the packaging material supply mechanism configured to output packaging material outward; A packaging material application mechanism, configured to wrap the packaging material output by the packaging material supply mechanism around the outside of the goods; A measuring component, the measuring component being configured to measure the speed of the packaging material output by the packaging material supply mechanism, or the measuring component being configured to measure the instantaneous speed of the outer surface of the goods corresponding to the portion covered by the packaging material; The packaging material supply mechanism and the measuring component are configured to remain stationary relative to each other. A controller is connected to both the measuring component and the unwinding motor, and the controller is configured to adjust the speed of the unwinding motor based on the measurement values ​​of the measuring component.

12. The wrapping equipment according to claim 10 or 11, characterized in that, Also includes: A packaging material temporary storage mechanism, wherein a temporary storage space is formed in the packaging material temporary storage mechanism, and the temporary storage space is configured to temporarily store the packaging materials output by the packaging material supply mechanism; The packaging material storage mechanism is configured to receive packaging materials output by the packaging material supply mechanism and output the packaging materials to the packaging material using mechanism; In addition, the packaging material temporary storage mechanism is configured to reduce the amount of packaging material stored in the temporary storage space when the amount of packaging material used by the packaging material using mechanism is greater than the amount of packaging material output by the packaging material supply mechanism; the packaging material temporary storage mechanism is also configured to increase the amount of packaging material stored in the temporary storage space when the amount of packaging material used by the packaging material using mechanism is less than the amount of packaging material output by the packaging material supply mechanism.

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