A pinch roller power mechanism and a driving method of the pinch roller power mechanism

Abstract

The application discloses a clamping roller power mechanism and a driving method thereof, and is applied to the technical field of winding machine equipment. The clamping roller power mechanism comprises a roller conveying structure and a clamping roller structure. The clamping roller structure is arranged below the roller conveying structure and comprises a driving roller, a driven roller and a power component. The driving roller and the driven roller pass through the upper surface of the roller conveying structure. The clamping roller power mechanism and the driving method thereof can realize the clamping and rotating actions of products of multiple types of diameters and meet the winding and packaging of the main machine for products of multiple types.

Description

Technical Field

[0001] This invention belongs to the technical field of winding machine equipment, and specifically relates to a clamping roller power mechanism and a driving method for the clamping roller power mechanism. Background Technology

[0002] With the development of industrial technology, the daily operations of the packaging industry have shifted from manual labor to mechanization. In the process of winding and wrapping finished packing straps, the traditional method involves using cylinders to drive active rollers and passive pressure rollers in a telescopic motion. Because the cylinder stroke is fixed, each positioning can only position products of one type and diameter, and cannot accommodate products with multiple diameter specifications. For example, attached... Figure 1 As shown, in the traditional method, the cylinder 3 is set below the clamping roller power mechanism 2 (that is, the cylinder 3 is fixed below the mounting frame 4). When the material runs to the packaging positioning position through the roller conveyor structure, the control cylinder pushes the active roller and the passive roller out from below the roller conveyor structure to clamp the material and package it. This method cannot meet the wrapping and packaging of various types of products produced by the main machine and has poor adaptability to different types of products.

[0003] Therefore, existing technologies need to be improved and developed. Summary of the Invention

[0004] The purpose of this application is to provide a clamping roller power mechanism and a driving method for the clamping roller power mechanism, which can realize the clamping or releasing action of products with multiple diameters, and meet the needs of the host machine for wrapping and packaging multiple types of products.

[0005] In a first aspect, this application provides a clamping roller power mechanism, which is installed on a wrapping machine to package materials, including a roller conveying structure and a clamping roller structure.

[0006] The roller conveying structure includes a conveying area and a winding area set on the mounting frame. A first drive roller is set on the conveying area. The winding area includes a cavity area and a dwell receiving area. A second drive roller is set on the dwell receiving area, which is parallel to the first drive roller and has a length shorter than the first drive roller. The cavity area is located between the second drive roller and the mounting frame.

[0007] The clamping roller structure is located below the winding area and includes a power unit, an active roller located in the dwell receiving area, and a passive roller located in the cavity area. The active roller and the passive roller protrude from the upper surface of the roller conveying structure and move along the axial direction of the first transmission roller and the second transmission roller respectively under the drive of the power unit.

[0008] This application provides a clamping roller power mechanism, including a roller conveying structure and a clamping roller structure. The roller conveying structure is mounted on the mounting frame of a stretch wrapping machine and is used for conveying materials. The roller conveying structure includes a conveying zone and a winding zone. A first drive roller is provided on the conveying zone, and materials are conveyed along the rolling direction of the first drive roller. The winding zone includes a cavity zone and a dwelling and receiving zone. The dwelling and receiving zone is used to receive materials conveyed from the conveying zone and provides support to the materials when they leave the conveying zone. A second drive roller is provided in the dwelling and receiving zone, parallel to the first drive roller and shorter in length than the first drive roller. The rolling direction of the second drive roller is the same as that of the first drive roller, providing a force for the material to displace along the rolling direction and preventing the material from not completely entering the dwelling and receiving zone from the conveying zone. The cavity zone is used to house the C-shaped wrapping ring used by the stretch wrapping machine to convey the packaging film. The packaging film is connected to the material through the C-shaped wrapping ring to package the material. The cavity zone is located between the second drive roller and the mounting frame to prevent interference between the second drive roller and the C-shaped wrapping ring. The clamping roller structure is positioned below the winding area to avoid interference with the roller conveying structure. It includes a power unit, an active roller in the dwell receiving area, and a passive roller in the cavity area. The active and passive rollers protrude from the upper surface of the roller conveying structure and move axially along the first and second drive rollers under the drive of the power unit to clamp or release different types of materials. Therefore, the clamping roller power mechanism proposed in this application can realize the clamping or releasing action of products with multiple diameters, satisfying the winding and packaging needs of various types of products in the main machine.

[0009] Furthermore, at least two active rollers and two passive rollers are provided.

[0010] By setting at least two active rollers and two passive rollers, there are at least four contact points with the material when the clamping roller structure clamps the material, providing stable support force to the material.

[0011] Furthermore, the power components include a servo motor, a first drive cylinder, and a second drive cylinder;

[0012] The servo motor is connected to the drive roller to drive the drive roller to rotate;

[0013] The first drive cylinder is connected to the drive roller to drive the drive roller to move along the axial direction of the second transmission roller;

[0014] At least two second drive electric cylinders are provided, each connected to a different driven roller, and each drive the two driven rollers to move along the axial direction of the first drive roller.

[0015] To flexibly adapt to the production needs of packaging materials of different types and sizes, the power mechanism connecting the active roller and the passive roller includes a servo motor, a first drive cylinder, and a second drive cylinder. The servo motor is connected to the active roller and drives it to rotate. When clamping materials, the active roller can push the materials to rotate, making it easier for the packaging film to wrap the materials and achieve packaging. The first drive cylinder is connected to the active roller and drives it to move along the axial direction of the second drive roller, so that the active roller can approach the passive roller and cooperate with the passive roller to clamp the materials. At least two second drive cylinders are provided, each connected to two passive rollers, to improve the flexibility of the clamping rollers and better adapt to materials of different sizes. The two second drive cylinders drive the two passive rollers to move along the axial direction of the first drive roller, so that the passive rollers can approach the active roller and cooperate with the active roller to clamp the materials.

[0016] Furthermore, the clamping roller structure also includes a connecting rod for connecting two active rollers. A servo motor is mounted on the connecting rod and connected to the two active rollers to drive the active rollers to rotate.

[0017] By incorporating a connecting rod into the clamping roller structure, which connects two active rollers, and mounting a servo motor on the connecting rod and connecting it to the two active rollers, it is possible to simultaneously drive the two active rollers to rotate synchronously using a single servo motor. This simplifies the power components of the clamping roller and improves the driving effect.

[0018] Furthermore, a first drive electric cylinder is provided and connected to a connecting rod. The first drive electric cylinder drives the two active rollers to run simultaneously through the connecting rod.

[0019] Furthermore, a spring assembly is provided at the connection point between the first drive electric cylinder and the connecting rod;

[0020] The spring assembly includes a spring and a contact plate. The contact plate contacts the connecting rod, and the spring is connected to the contact plate. The spring assembly plays a buffering role when the material rotates.

[0021] Furthermore, the mounting bracket is also provided with a first guide rail and a second guide rail. There are two first guide rails and two second guide rails respectively, and the two second guide rails are located between the two first guide rails. The two second guide rails are arranged side by side with the two first guide rails respectively. Both the first guide rails and the second guide rails are arranged along the axial direction of the first transmission roller and the second transmission roller.

[0022] Furthermore, two first sliding grooves are respectively provided at both ends of the connecting rod facing the mounting frame. The two first sliding grooves contact the two first guide rails, so that the drive roller runs on the first guide rails.

[0023] The passive roller is provided with a connecting rod plate at the bottom. Two second sliding grooves are provided at both ends of the connecting rod plate facing the mounting frame. The two second sliding grooves are respectively connected to two parallel first guide rails and second guide rails, so that the passive roller runs on the first guide rails and second guide rails.

[0024] Secondly, this application provides a driving method for a clamping roller power mechanism, wherein the clamping roller power mechanism is any of the clamping roller power mechanisms described above, and the driving method includes: acquiring the real-time position of the material being conveyed on the roller conveyor structure and the positioning position of the material being packaged;

[0025] The active and / or passive rollers are controlled according to the real-time position and the positioning position to clamp the material to the positioning position for packaging.

[0026] Furthermore, the step of controlling the movement of the active roller and / or passive roller based on the real-time position and the positioning position to control the active roller and passive roller to clamp the material to the positioning position for packaging includes:

[0027] When the real-time position corresponds to the receiving area, when the material passes through the active roller, the active roller is controlled to move towards the passive roller until the material contacts the passive roller. The active roller and the passive roller are then controlled to cooperate to clamp the material and move it to the positioning position for packaging.

[0028] When the real-time position corresponds to the cavity area, the passive roller is controlled to move towards the active roller as the material passes through it.

[0029] After the material has fully entered the receiving area, the active roller is controlled to move towards the passive roller until the active roller contacts the material. The active roller and the passive roller are then controlled to clamp the material and move it to the positioning position for packaging.

[0030] Beneficial Effects: As described above, the clamping roller power mechanism and driving method provided in this application include a roller conveying structure and a clamping roller structure. The roller conveying structure is mounted on the mounting frame of a wrapping machine and is used to convey materials. The roller conveying structure includes a conveying area and a winding area. A first drive roller is provided on the conveying area, and the material is conveyed along the rolling direction of the first drive roller. The winding area includes a cavity area and a dwell receiving area. The dwell receiving area is used to receive the material conveyed from the conveying area and provides support to the material when it leaves the conveying area. A second drive roller is provided in the dwell receiving area, parallel to the first drive roller and shorter in length than the first drive roller. The rolling direction of the second drive roller is the same as that of the first drive roller, which can provide a force for the material to displace along the rolling direction, preventing the material from not completely entering the dwell receiving area from the conveying area. The cavity area is used to house the C-shaped wrapping ring used to convey the packaging film on the wrapping machine. The packaging film is connected to the material through the C-shaped wrapping ring to package the material. The cavity area is located between the second drive roller and the mounting frame to prevent interference between the second drive roller and the C-shaped winding ring. The clamping roller structure is positioned below the winding area to avoid interference with the roller conveying structure. It includes a power unit, an active roller located in the dwell receiving area, and a passive roller located in the cavity area. The active and passive rollers protrude from the upper surface of the roller conveying structure and move axially along the first and second drive rollers under the drive of the power unit to clamp or release different types of materials. Therefore, the clamping roller power mechanism proposed in this application can realize the clamping or releasing actions of products with multiple diameters, satisfying the winding and packaging needs of various types of products in the main unit. Attached Figure Description

[0031] Figure 1 This is a schematic diagram of the clamping roller power mechanism in the prior art.

[0032] Figure 2 This is a schematic diagram of a clamping roller power mechanism provided in an embodiment of this application.

[0033] Figure 3 An exploded view of a clamping roller power mechanism provided in an embodiment of this application.

[0034] Figure 4 This is a schematic diagram of the roller conveying structure provided in an embodiment of this application.

[0035] Figure 5 This is a top view of the clamping roller structure provided in an embodiment of this application.

[0036] Figure 6 This is a perspective view of the clamping roller structure provided in an embodiment of this application.

[0037] Labeling Explanation: 1. Stretch wrapping machine; 2. Clamping roller power mechanism; 3. Cylinder; 4. Mounting frame; 5. C-shaped winding ring; 6. Material; 21. Roller conveyor structure; 22. Clamping roller structure; 211. Conveying area; 212. Winding area; 213. First drive roller; 214. Second drive roller; 215. Cavity area; 216. Dwelling and receiving area; 23. Power component; 231. First drive cylinder; 232. Second drive cylinder; 233. Servo motor; 221. Active roller; 222. Passive roller; 223. Connecting rod; 2231. Sprocket; 24. Spring assembly; 241. Spring; 242. Contact plate; 25. First guide rail; 26. Second guide rail; 251. First chute; 261. Second chute; 27. Connecting rod plate. Detailed Implementation

[0038] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0039] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0040] In the following text, terms indicating direction, such as "axial direction," "above," and "below," will all be followed by... Figure 1 The orientation shown is the standard.

[0041] like Figure 1 As shown, in the traditional process of wrapping material 6, the clamping roller power mechanism 2 is mounted on the mounting frame 4 of the wrapping machine 1. The power component 23 is a cylinder 3, which is located on the lower surface of the mounting frame 4 and connected to the active roller 221 and passive roller 222 on the upper surface of the mounting frame 4. When the material 6 reaches the packaging positioning position, the cylinder 3 drives the active roller 221 and passive roller 222 to move upward, protruding out of the roller conveying structure 21 to clamp the material 6, so as to facilitate the packaging of the material 6. This method can only clamp materials 6 of one size, which is not flexible and cannot meet the wrapping needs of various types of products produced by the main machine. In order to solve this problem, this application proposes a clamping roller power mechanism 2.

[0042] like Figure 2 , Figure 4 As shown, a clamping roller power mechanism 2 of the present invention is installed on a wrapping machine 1 to package materials 6, and includes a roller conveying structure 21 and a clamping roller structure 22.

[0043] The roller conveying structure 21 includes a conveying area 211 and a winding area 212 disposed on the mounting frame 4. A first drive roller 213 is disposed on the conveying area 211. The winding area 212 includes a cavity area 215 and a dwell receiving area 216. A second drive roller 214 is disposed in the dwell receiving area 216, which is parallel to the first drive roller 213 and has a shorter length than the first drive roller 213. The cavity area 215 is located between the second drive roller 214 and the mounting frame 4.

[0044] The clamping roller structure 22 is located below the winding area 212 and includes a power unit 23, an active roller 221 located in the dwell receiving area 216, and a passive roller 222 located in the cavity area 215. The active roller 221 and the passive roller 222 protrude from the upper surface of the roller conveying structure 21 and move along the axial direction of the first transmission roller 213 and the second transmission roller 214 under the drive of the power unit 23, respectively.

[0045] In specific applications, the clamping roller power mechanism 2 is mounted on the stretch wrapping machine 1. The stretch wrapping machine 1 receives the tubular packing tape material 6 from the main machine after winding and wraps it with film for easy transportation. The stretch wrapping machine 1 is equipped with a mounting frame 4, and the clamping roller power mechanism 2 is mounted on this mounting frame 4. Adjacent to the clamping roller power mechanism 2 is a C-shaped winding ring 5 for conveying the packing film (see...). Figure 1 The packaging film is connected to the material 6 via the C-shaped wrapping ring 5 to wrap and package the material 6.

[0046] The roller conveyor structure 21 is mounted on the mounting frame 4 and connected to the unloading device of the main unit. After the material 6 is wound by the main unit, it is fed into the roller conveyor structure 21 through the unloading device. The roller conveyor structure 21 has a conveying area 211 and a winding area 212. The conveying area 211 is provided with a first conveying roller, and the winding area 212 is provided with a second conveying roller. The second conveying roller is arranged parallel to the first conveying roller, and the size of the second conveying roller is smaller than that of the first conveying roller, so that the winding area 212 includes at least a dwell receiving area 216 with the second conveying roller and a cavity area 215 formed by the second conveying roller and the mounting frame 4. The C-shaped winding ring 5 is set in the cavity area 215 to avoid interference with the roller conveyor structure 21. In practical applications, material 6 is conveyed from conveying area 211 to winding area 212 for wrapping. However, winding area 212 has a cavity area 215. When material 6 moves from conveying area 211 to winding area 212, if there is a contact area between material 6 and cavity area 215, material 6 will lack some support and thrust for continued displacement during transportation. At this time, clamping roller structure 22 is needed to push it towards the dwell receiving area 216 where the second conveying roller is located, so that material 6 can completely enter winding area 212 from conveying area 211, avoiding the material from staying between conveying area and winding area 212 due to insufficient conveying power during the conveying process, which would affect the packaging process.

[0047] To facilitate the clamping roller structure 22 in pushing the material 6 into the dwell receiving area 216, the clamping roller structure 22 can be positioned below the winding area 212. It includes a power unit 23, an active roller 221 positioned in the dwell receiving area 216, and a passive roller 222 positioned in the cavity area 215. The active roller 221 and passive roller 222 protrude from the upper surface of the roller conveying structure 21 and are respectively connected to the power unit 23, possessing independent operating capability. When the material 6 passes through the cavity area 215, the power unit 23 is controlled to drive the passive roller 222 to move along the axial direction of the first conveying roller, causing the material 6 to enter the dwell receiving area 216. When the material 6 does not pass through the cavity area 215 and directly enters the dwell receiving area 216 of the winding area 212 from the conveying area 211, the power unit 23 is controlled to drive the active roller 221 to move along the axial direction of the second conveying roller, causing the material 6 to contact the passive roller 222, and the passive roller 222 clamps the material 6 for packaging.

[0048] In some specific implementations, the materials 6 produced by the main unit vary in type and size, typically ranging from 430mm to 610mm in diameter. When materials 6 of different sizes enter the winding area 212 from the conveying area 211, their entry positions will differ. When material 6 enters the cavity area 215, the position of material 6 is adjusted by driving the passive roller 222 to ensure smooth entry into the winding area 212. Then, the driving roller 221, in conjunction with the passive roller 222, clamps the material 6 and moves it to the pre-set packaging position for packaging. Similarly, before material 6 passes through the cavity area 215, after it has fully entered the receiving area 216, the driving roller 221 pushes the material 6 towards the passive roller 222, which, in conjunction with the passive roller 222, clamps the material 6 and moves it to the pre-set packaging position for packaging. During this process, since the active roller 221 and the passive roller 222 run along the axial direction of the first conveyor roller and the second conveyor roller, the stopping position of the active roller 221 and the passive roller 222 can be arbitrarily controlled during the stroke of the power unit 23, so that the clamping roller structure 22 can flexibly clamp materials 6 of different sizes to meet the wrapping and packaging of various types of products of the main unit.

[0049] In some preferred embodiments, at least two active rollers 221 and at least two passive rollers 222 are provided.

[0050] In specific applications, please refer to Figure 3 After material 6 enters the winding area 212, the active roller 221 and the passive roller 222 need to work together to tighten and clamp the material 6 for packaging. In order to ensure that the material 6 is stably clamped, at least two active rollers 221 and two passive rollers 222 are provided. When clamping the material 6, there are at least four contact points with the material 6 to ensure the stability of the material 6 during packaging and to avoid the material being driven away from the packaging position by the second conveyor roller, which would result in unqualified processing. In some preferred embodiments, the two active rollers 221 and the two passive rollers 222 are arranged side by side on a straight line. In order to ensure that the passive rollers 222 do not interfere with the C-shaped winding ring 5 in the cavity area 215, the distance between the two passive rollers 222 is greater than the distance between the two active rollers 221, and the active rollers 221 and the passive rollers 222 form a trapezoidal shape.

[0051] In some preferred embodiments, the power unit 23 includes a servo motor 233, a first drive cylinder 231, and a second drive cylinder 232;

[0052] Servo motor 233 is connected to drive roller 221 to rotate;

[0053] The first drive cylinder 231 is connected to the drive roller 221 to drive the drive roller 221 to move along the axial direction of the second transmission roller 214;

[0054] At least two second drive cylinders 232 are provided, each connected to a passive roller 222, and each drive the passive roller 222 to move along the axial direction of the first drive roller 213.

[0055] In specific applications, please refer to Figure 5 , Figure 6 To make the clamping roller structure 22 more flexible, a servo motor 233 can be installed in the power unit 23. The first drive cylinder 231 and the second drive cylinder 232 are connected to drive the active roller 221 and the passive roller 222 separately. The servo motor 233 is connected to the active roller 221 and drives the active roller 221 to rotate. When the active roller 221 clamps the material 6, it can push the material 6 to rotate, which facilitates the wrapping film to wrap the material 6 and achieve packaging. The first drive cylinder 231 is connected to the active roller 221 and drives the active roller 221 to move along the axial direction of the second transmission roller 214, so that the active roller 221 can approach the passive roller 222 and cooperate with the passive roller 222 to clamp the material 6. At least two second drive cylinders 232 are provided, which are respectively connected to two passive rollers 222 to improve the flexibility of the passive rollers 222 and better adapt to materials 6 of different sizes. The two second drive cylinders 232 respectively drive the two passive rollers 222 to move along the axial direction of the first transmission roller 213, so that the passive rollers 222 can approach the active roller 221 and cooperate with the active roller 221 to clamp the material 6. The ends of the first drive cylinder 231 and the second drive cylinder 232 that are connected to the connecting rod 223 and the passive roller 222, respectively, can be made of flexible material to ensure that they do not jam when driving the active roller 221 and the passive roller 222. In practical applications, the first drive cylinder 231 and the second drive cylinder 232 can be replaced by a combination of components or independent components with the same driving function, such as a servo motor 233 and a linear screw.

[0056] In some specific embodiments, when material 6 enters cavity area 215 from conveying area 211, the passive roller 222 on the side closer to material 6 can be controlled to run first, pushing material 6 towards the holding area 216. At this time, material 6 will run at an inclined angle close to active roller 221. After material 6 leaves cavity area 215 and enters holding area 216, the first drive cylinder 231 drives active roller 221 to contact material 6 and push material 6 to the positioning position. At the same time, the second drive cylinder drives passive roller 222 on the side farther from material 6 to run along the first conveying roller. Together with the other two active rollers 221 and passive roller 222, material 6 is clamped and limited within the positioning position. Then, the servo motor 233 is controlled to drive active roller 221 to rotate, causing material 6 to rotate at the positioning position, which facilitates the wrapping film to wrap around the entire material 6, thus realizing the packaging of material 6.

[0057] In some preferred embodiments, the clamping roller structure 22 further includes a connecting rod 223 for connecting two active rollers 221. A servo motor 233 is mounted on the connecting rod 223 and connected to the two active rollers 221 to drive the active rollers 221 to rotate.

[0058] In specific applications, in order to enable the two active rollers 221 to operate synchronously under the drive of a servo motor 233, a connecting rod 223 can be set in the clamping roller structure 22. The connecting rod 223 is used to connect the two active rollers 221. In practical applications, sprockets 2231 are fitted on both active rollers 221 and the servo motor 233. The sprockets 2231 are connected by a chain (not shown in the figure). The servo motor 233 drives the sprockets 2231 connected to the servo motor 233 to rotate, and drives the two active rollers 221 to rotate synchronously through chain transmission.

[0059] In some preferred embodiments, a first drive cylinder 231 is provided and connected to a connecting rod 223. The first drive cylinder 231 drives two drive rollers 221 to run simultaneously through the connecting rod 223.

[0060] In specific applications, a first drive electric cylinder 231 is provided and connected to the connecting rod 223. By pushing the connecting rod 223, the drive roller 221 can be driven to run synchronously, which can effectively simplify the power component 23 of the clamping roller.

[0061] In some preferred embodiments, a spring assembly 24 is provided at the position where the first drive electric cylinder 231 is connected to the connecting rod 223;

[0062] The spring assembly 24 includes a spring 241 and a contact plate 242. The contact plate 242 contacts the connecting rod 223, and the spring 241 is connected to the contact plate 242. The spring assembly 24 plays a buffering role when the material 6 rotates.

[0063] In specific applications, the spring assembly 24 mainly includes a spring 241 and a contact plate 242. One end of the spring 241 is connected to the first drive cylinder 231, and the other end is connected to the contact plate 242. The contact plate 242 is connected to the connecting rod 223. This connection method can achieve a buffering effect. In some preferred embodiments, in order to make the connection between the two ends of the spring 24 and the first drive cylinder 231 and the contact plate 242 more stable, the spring assembly 24 can also include a connecting rod and a second contact plate (not labeled in the figure). The spring is sleeved on the connecting rod and connected to the second contact plate 242. The second contact plate is connected to the first drive cylinder 231. When the spring is compressed, due to the limiting effect of the connecting rod, it can only undergo axial deformation and cannot undergo radial deformation, which is more conducive to the spring assembly 24 achieving a buffering effect.

[0064] In specific applications, the first drive cylinder 231 drives the connecting rod 223 to operate, thereby driving the active roller 221 to clamp or release the material 6. While the active roller 221 clamps the material 6, in order to better wrap the packaging film around the material 6, the servo motor 233 on the connecting rod 223 drives the active roller 221 to rotate, causing the material 6 to rotate. During the rotation of the material 6, relative pressure is applied to the active roller 221 and the first drive cylinder 231 connected to the active roller 221, which can easily lead to the first drive cylinder 231 being damaged. To solve this problem, a spring assembly 24 can be installed at the connection position between the first drive cylinder 231 and the connecting rod 223. The spring assembly 24 includes at least a spring 241 and a contact plate 242. The spring 241 is connected to the contact plate 242, and the contact plate 242 is fixed to the lower surface of the connecting rod 223 and located on the side of the servo motor 233 to avoid interference between the contact plate 242 and the servo motor 233. Thus, when the material 6 applies pressure to the drive roller 221 and the connecting rod 223, the connecting rod 223 deforms in the direction of the first drive cylinder 231, thereby pushing the contact plate 242 to compress the spring 241, achieving a buffering effect and preventing the material 6 from directly pressing on the first drive cylinder 231 and damaging it.

[0065] In some preferred embodiments, the mounting bracket 4 is further provided with a first guide rail 25 and a second guide rail 26. There are two first guide rails 25 and two second guide rails 26 respectively, and the two second guide rails 26 are disposed between the two first guide rails 25. The two second guide rails 26 are arranged side by side with the two first guide rails 25. The first guide rails 25 and the second guide rails 26 are both arranged along the axial direction of the first transmission roller 213 and the second transmission roller 214.

[0066] In practical applications, to ensure that the active roller 221 and passive roller 222 can move better along the first drive roller 213 and the second drive roller 214, a first guide rail 25 and a second guide rail 26 can be provided on the mounting frame 4. Two first guide rails 25 are arranged along the axial direction of the first drive roller 213. In actual applications, both ends of the connecting rod 223 are positioned on the first guide rail 25 to reduce the sliding friction of the connecting rod 223 on the mounting frame 4, preventing the first drive cylinder 231 from slipping or jamming when driving the connecting rod 223 to drive the active roller 221. Two second guide rails 26 are arranged along the axial direction of the second drive roller 214 and are respectively positioned below the two passive rollers 222, reducing the sliding friction of the passive rollers 222 on the mounting frame 4, preventing the second drive cylinder 232 from slipping or jamming when driving the passive rollers 222. In some specific configurations, two second guide rails 26 are positioned between two first guide rails 25, with each second guide rail 26 arranged side-by-side with the first guide rails 25. In other words, the first guide rails 25 are positioned on the sides of the second guide rails 26, ensuring that each second guide rail 26 has a first guide rail 25 on its side. The passive roller 222 is then connected to both the first guide rails 25 and the second guide rollers, thereby improving the installation stability of the passive roller 222.

[0067] In some preferred embodiments, the two ends of the connecting rod 223 are respectively provided with two first sliding grooves 251 facing the mounting frame 4, and the two first sliding grooves 251 contact the two first guide rails 25, so that the drive roller 221 runs on the first guide rails 25.

[0068] The passive roller 222 has a connecting plate 27 at its bottom. The two ends of the connecting plate 27 are respectively provided with two second slide grooves 261 facing the mounting frame 4. The two second slide grooves 261 are respectively connected to two parallel first guide rails 25 and second guide rails 26, so that the passive roller 222 runs on the first guide rails 25 and second guide rails 26.

[0069] In a specific implementation, the connecting rod 223 has two first sliding grooves 251 at both ends facing the mounting frame 4. The two first sliding grooves 251 contact the two first guide rails 25, allowing the connecting rod 223 to drive the active roller 221 more smoothly under the push of the first drive cylinder 231. Since one passive roller 222 can be connected to the first guide rail 25 and the second guide rail 26 simultaneously, a connecting rod plate 27 can be provided at the bottom of the passive roller 222 for easy installation. The connecting rod plate 27 has two second sliding grooves 261 at both ends facing the mounting frame 4. The connecting rod plate 27 is mounted on the first guide rail 25 and the second guide rail 26 through the two second sliding grooves 261, ensuring the smooth operation of the passive roller 222 while also ensuring the stability of the passive roller 222 installation. When the active roller 221 pushes the material 6 to contact the passive roller 222, the passive roller 222 will not be deformed by impact.

[0070] As can be seen from the above, the clamping roller power mechanism provided in this application includes a roller conveying structure 21 and a clamping roller structure 22. The roller conveying structure 21 is mounted on the mounting frame 4 of the wrapping machine 1 and is used to convey material 6. The roller conveying structure 21 includes a conveying area 211 and a winding area 212. A first drive roller 213 is provided on the conveying area 211, and material 6 is conveyed along the rolling direction of the first drive roller 213. The winding area 212 includes a cavity area 215 and a dwell receiving area 216. The dwell receiving area 216 is used to receive material 6 conveyed from the conveying area 211 and provides support force to material 6 when material 6 leaves the conveying area 211. The receiving area 216 is equipped with a second drive roller 214, which is parallel to the first drive roller 213 and shorter in length than the first drive roller 213. The rolling direction of the second drive roller 214 is the same as that of the first drive roller 213, providing a force to displace the material 6 along the rolling direction and preventing the material 6 from failing to completely enter the receiving area 216 from the conveying area 211. The cavity area 215 is used to house the C-shaped wrapping ring 5 on the wrapping machine 1, which is used to convey the packing film. The packing film is connected to the material 6 through the C-shaped wrapping ring 5 to pack the material 6. The cavity area 215 is located between the second drive roller 214 and the mounting frame 4 to prevent interference between the second drive roller 214 and the C-shaped wrapping ring 5. The clamping roller structure 22 is positioned below the winding area 212 to avoid interference with the roller conveying structure 21. It includes a power unit 23, an active roller 221 located in the dwell receiving area 216, and a passive roller 222 located in the cavity area 215. The active roller 221 and passive roller 222 protrude from the upper surface of the roller conveying structure 21 and move axially along the first transmission roller 213 and the second transmission roller 214 under the drive of the power unit to clamp or release different types of materials 6. Therefore, the clamping roller power mechanism 2 proposed in this application can realize the clamping or releasing action of products with multiple diameters, satisfying the winding and packaging needs of various types of products in the main machine.

[0071] This application provides a driving method for a clamping roller power mechanism 2, wherein the clamping roller power mechanism 2 is any of the clamping roller power mechanisms 2 mentioned above, and the driving method includes:

[0072] The real-time position of material 6 being conveyed on the roller conveyor structure 21 and the positioning position of material 6 being packaged are obtained.

[0073] The active roller 221 and / or passive roller 222 are controlled to move according to the real-time position and the positioning position, so as to control the active roller 221 and passive roller 222 to clamp the material 6 to the positioning position for packaging.

[0074] In specific applications, sensors can be installed on the wrapping machine 1 to monitor the position of material 6 on the roller conveyor structure 21 in real time. The sensors are electrically connected to a back-end server, and the power component 23 in the clamping roller power mechanism 2 is electrically connected to the back-end server. The sensors transmit the real-time position of material 6 to the back-end server. The positioning position is a fixed position on the clamping roller structure 22, which is pre-input by the user and stored in the back-end server. Based on the received real-time position and positioning position, the back-end server controls the active roller 221 and / or passive roller 222 to clamp the material 6 entering the winding area 212 to the positioning position for winding.

[0075] In some specific real-time methods, the steps of controlling the action of the active roller 221 and / or the passive roller 222 to clamp the material 6 to the positioning position for packaging, based on the real-time position and the positioning position, include:

[0076] When the real-time position corresponds to the receiving area 216, when the material 6 passes through the active roller 221, the active roller 221 is controlled to move towards the passive roller 222 until the material 6 contacts the passive roller 222. Then, the active roller 221 and the passive roller 222 are controlled to cooperate to clamp the material 6 and move it to the positioning position for packaging.

[0077] When the real-time position corresponds to the cavity area 215, when the material 6 passes through the passive roller 222, control the passive roller 222 to move towards the active roller.

[0078] After the material 6 has completely entered the receiving area 216, the active roller 221 is controlled to move towards the passive roller 222 until the active roller 221 contacts the material 6. The active roller 221 and the passive roller 222 are then controlled to clamp the material 6 and move it to the positioning position for packaging.

[0079] In specific applications, the control of the active roller 221 and passive roller 222 based on the real-time position and the positioning position is divided into two types. One type is where the real-time position of material 6 corresponds to the cavity area 215. This means that when material 6 enters the winding area 212 from the conveying area 211, it enters from the side where the cavity area 215 is located. At this time, because there is no support from the second drive roller 214 below material 6 entering the cavity area 215, it is difficult to maintain stability during operation. Therefore, when material 6 passes the passive roller 222, the back-end server can control the two passive rollers 222 to push material 6 towards the dwell receiving area. At this time, material 6 is pushed horizontally by the first conveying roller and vertically by the passive roller 222. Under the combined action of these two forces, material 6 enters the dwell receiving area 216 at an angle. When material 6 has completely entered the dwell receiving area 216, the active roller 221 is controlled to run and clamp material 6 with the passive roller 222 to the positioning position for packaging. Alternatively, when material 6 passes the passive roller 222, the backend server can control one passive roller 222 to push material 6 at an angle into the receiving area, and then control the active roller 221 to move, cooperating with the passive roller 222 in contact with material 6 to move material 6 to the positioning position. During this process, the other passive roller 222 is simultaneously driven to move to the positioning position and clamp the passive roller 222 at the positioning position. Another scenario is that when the real-time position of material 6 corresponds to the dwell receiving area 216, it means that material 6 enters from the side of the dwell receiving area 216 when it enters the winding area 212 from the conveying area 211. After material 6 has completely entered the dwell receiving area 216, the active roller 221 is driven to push material 6 towards the passive roller 222, cooperating with the passive roller 222 to clamp material 6 and move it to the positioning position for packaging. In practical applications, when material 6 moves to the positioning position, the servo motor is turned on, driving the active roller 221 to rotate, thereby rotating material 6 so that the packaging film can better wrap the entire material 6.

[0080] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0081] The above descriptions are merely some embodiments of the present invention. Those skilled in the art can make various modifications and improvements without departing from the inventive concept of the present invention, and these all fall within the scope of protection of the present invention.

Claims

1. A clamping roller power mechanism for packaging materials (6) on a stretch wrapping machine (1), characterized in that, It includes a roller conveying structure (21) and a clamping roller structure (22); The roller conveying structure (21) includes a conveying area (211) and a winding area (212) disposed on the mounting frame (4). A first drive roller (213) is disposed on the conveying area (211). The winding area (212) includes a cavity area (215) and a dwell receiving area (216). A second drive roller (214) is disposed on the dwell receiving area (216) and is parallel to the first drive roller (213) and has a length dimension shorter than the first drive roller (213). The cavity area (215) is located between the second drive roller (214) and the mounting frame (4). The clamping roller structure (22) is located below the winding area (212) and includes a power unit (23), an active roller (221) located in the dwell receiving area (216) and a passive roller (222) located in the cavity area (215). The active roller (221) and the passive roller (222) protrude from the upper surface of the roller conveying structure (21) and move along the axial direction of the first transmission roller (213) and the second transmission roller (214) respectively under the drive of the power unit (23). The mounting bracket (4) is also provided with a first guide rail (25) and a second guide rail (26). There are two first guide rails (25) and two second guide rails (26), and the two second guide rails (26) are arranged between the two first guide rails (25). The two second guide rails (26) are arranged side by side with the two first guide rails (25). The first guide rails (25) and the second guide rails (26) are both arranged along the axial direction of the first transmission roller (213) and the second transmission roller (214). The power unit (23) includes at least a servo motor (233), which is connected to the drive roller (221) to drive the drive roller (221) to rotate; The clamping roller structure (22) further includes a connecting rod (223), which is used to connect the two active rollers (221). The servo motor (233) is mounted on the connecting rod (223) and connected to the two active rollers (221) to drive the active rollers (221) to rotate. The two ends of the connecting rod (223) are respectively provided with two first sliding grooves (251) facing the mounting frame (4). The two first sliding grooves (251) respectively contact the two first guide rails (25) so that the active rollers (221) run on the first guide rails (25). The passive roller (222) is provided with a connecting rod plate (27) at its bottom. The connecting rod plate (27) has two second slide grooves (261) at both ends facing the mounting frame (4). The two second slide grooves (261) are respectively connected to the first guide rail (25) and the second guide rail (26) arranged side by side, so that the passive roller (222) runs on the first guide rail (25) and the second guide rail (26). At least two active rollers (221) and two passive rollers (222) are provided respectively; the power unit (23) further includes a first drive cylinder (231) and a second drive cylinder (232); the first drive cylinder (231) is connected to the active roller (221) to drive the active roller (221) to move along the axial direction of the second transmission roller (214); At least two second drive cylinders (232) are provided, which are respectively connected to two passive rollers (222) and respectively drive the two passive rollers (222) to move along the axial direction of the first transmission roller (213); The second drive cylinder (232) is used to control the passive roller (222) on the side closer to the material (6) to run when the material (6) enters the cavity area (215) from the conveying area (211) to push the material (6) to the dwell receiving area (216). The first drive cylinder (231) is used to drive the active roller 221 to contact the material (6) after the material (6) leaves the cavity area (215) and enters the dwell receiving area (216) to push the material (6) to the positioning position. At the same time, the second drive cylinder (232) is also used to drive the passive roller (222) on the side farther from the material (6) to run along the first conveying roller, and cooperate with the other two active rollers (221) and the passive roller (222) to clamp the material (6) and limit the material (6) within the positioning position.

2. The clamping roller power mechanism according to claim 1, characterized in that, The first drive electric cylinder (231) is provided and connected to the connecting rod (223). The first drive electric cylinder (231) drives the two drive rollers (221) to run simultaneously through the connecting rod (223).

3. The clamping roller power mechanism according to claim 2, characterized in that, A spring assembly (24) is provided at the position where the first drive electric cylinder (231) is connected to the connecting rod (223); The spring assembly (24) includes a spring (241) and a contact plate (242). The contact plate (242) contacts the connecting rod (223), and the spring (241) is connected to the contact plate (242). The spring assembly (24) plays a buffering role when the material (6) rotates.

4. A driving method for a clamping roller power mechanism, characterized in that, The clamping roller power mechanism (2) is the clamping roller power mechanism (2) according to any one of claims 1-3, and the driving method includes: obtaining the real-time position of the material (6) being conveyed on the roller conveying structure (21) and the positioning position of the material (6) being packaged; The active roller (221) and / or passive roller (222) are controlled to move according to the real-time position and the positioning position, so as to control the active roller (221) and the passive roller (222) to clamp the material (6) to the positioning position for packaging.

5. The driving method for a clamping roller power mechanism according to claim 4, characterized in that, The step of controlling the active roller (221) and / or the passive roller (222) to move according to the real-time position and the positioning position, so as to control the active roller (221) and the passive roller (222) to clamp the material (6) to the positioning position for packaging, includes: When the real-time position corresponds to the holding area (216), when the material (6) passes through the active roller (221), the active roller (221) is controlled to move towards the passive roller (222) until the material (6) contacts the passive roller (222). The active roller (221) and the passive roller (222) are then controlled to cooperate to clamp the material (6) and move it to the positioning position for packaging. When the real-time position corresponds to the cavity area (215), when the material (6) passes through the passive roller (222), the passive roller (222) is controlled to move towards the active roller (221); After the material (6) has completely entered the holding area (216), the active roller (221) is controlled to move towards the passive roller (222) until the active roller (221) contacts the material (6). The active roller (221) and the passive roller (222) are then controlled to clamp the material (6) and move it to the positioning position for packaging.

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