Roll changing and receiving device

Abstract

The application provides a roll changing and material receiving device, which comprises a mounting seat, a driving shaft, a compression roller, an overrunning clutch and a compression roller driver. The driving shaft is rotatably connected to the mounting seat. The compression roller is provided with a mounting channel. The overrunning clutch is arranged in the mounting channel and comprises an inner ring and an outer ring. The inner ring is fixed to the driving shaft, and the outer ring is fixed to the compression roller. The compression roller driver is mounted on the mounting seat and is in driving connection with the driving shaft. The compression roller driver is used to drive the driving shaft to rotate. In the roll changing and material receiving device provided by the application, the compression roller driver is used to drive the driving shaft to rotate. The driving shaft and the compression roller are connected through the overrunning clutch. When the driving shaft rotates, the compression roller can rotate through the overrunning clutch. Thus, the speed difference between the linear speed of the outer shaft surface of the compression roller and the conveying speed of the material belt can be reduced or eliminated. The excessive tension of the material belt caused by the compression roller contacting the material belt can be reduced or eliminated. Thus, the problem of belt breakage during the joint of the material belt can be avoided.

Description

Technical Field

[0001] This application relates to the field of material roll replacement technology, and in particular to a material roll replacement and receiving device. Background Technology

[0002] In related technologies, when a roll-changing device joins one roll of material with another, it uses a pressure roller to drive the material roll to join. However, due to the large speed difference between the linear velocity of the outer shaft surface of the pressure roller and the conveying speed of the material roll, the tension of the material roll suddenly increases when the pressure roller contacts the material roll, making the material roll prone to breakage. Utility Model Content

[0003] This application provides a roll-changing and splicing device to solve the problem of belt breakage that easily occurs when the pressure roller drives the material belt to join.

[0004] This application provides a roll-changing and feeding device, which includes a mounting base, a drive shaft, a pressure roller, an overrunning clutch, and a pressure roller driver. The drive shaft is rotatably connected to the mounting base. The pressure roller is provided with an installation channel. The overrunning clutch is disposed within the installation channel and includes an inner ring and an outer ring. The inner ring is fixed to the drive shaft, and the outer ring is fixed to the pressure roller. The pressure roller driver is mounted on the mounting base and is drively connected to the drive shaft, and the pressure roller driver is used to drive the drive shaft to rotate.

[0005] In some embodiments, the number of overrunning clutches is set to one, and the overrunning clutch is disposed at the end or middle of the pressure roller; or, the number of overrunning clutches is set to two, and the two overrunning clutches are respectively disposed at the two ends of the pressure roller.

[0006] In some embodiments, the mounting channel is provided through both ends of the pressure roller along the axial direction of the pressure roller, and the drive shaft extends from one end of the pressure roller to the other end of the pressure roller.

[0007] In some embodiments, the roll changing and feeding device further includes a blind end, which is disposed in the mounting channel and near the end of the pressure roller. The blind end is fixedly connected to the pressure roller, and a first mounting groove is provided on the blind end, with the outer ring fixed in the first mounting groove.

[0008] In some embodiments, the roll changing and feeding device further includes a flange seat, the flange seat being fixed in the first mounting groove, the flange seat being provided with a second mounting groove, and the outer ring being fixed in the second mounting groove.

[0009] In some embodiments, the roll changing and receiving device further includes a connecting seat, which is fixedly connected to the mounting base, and the pressure roller driver is fixedly connected to the connecting seat.

[0010] In some embodiments, the roll changing and receiving device further includes a lifting structure, the mounting base being detachably mounted on the lifting structure, and the lifting structure being used to move the mounting base closer to or away from the roll.

[0011] In some embodiments, the roll-changing and feeding device further includes a feeding driver, the mounting base is movably disposed relative to the lifting structure, and the feeding driver is used to drive the mounting base to move between a first position and a second position relative to the lifting structure, the second position being located on the side of the first position closer to the roll.

[0012] In some embodiments, the roll-changing and receiving device further includes a cutting structure mounted on the lifting structure. The cutting structure includes a cutting blade, a cutting driver, and a protective cover. The cutting driver is used to drive the cutting blade to move relative to the lifting structure between a first cutting position and a second cutting position. When the cutting blade is in the first cutting position, the cutting blade is separated from the material strip, and the protective cover is at least partially located on the side of the cutting blade near the material strip. When the cutting blade is in the second cutting position, the cutting blade is outside the protective cover and is used to cut the material strip.

[0013] In some embodiments, the mounting base includes a first base and a second base, with the first base and the second base forming a mounting hole, the drive shaft passing through the mounting hole, and the first base and the second base being detachably fixed together.

[0014] In the roll changing and feeding device provided in this application, the pressure roller driver is used to drive the drive shaft to rotate. The drive shaft and the pressure roller are linked by an overrunning clutch. When the drive shaft rotates, it can drive the pressure roller to rotate through the overrunning clutch, thereby reducing or eliminating the speed difference between the linear speed of the outer shaft surface of the pressure roller and the conveying speed of the material belt. This reduces or eliminates the excessive tension of the material belt when the pressure roller contacts the material belt, thereby avoiding the problem of belt breakage during splicing. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0016] Figure 1This is a schematic diagram of the roll changing and feeding device provided in the embodiments of this application.

[0017] Figure 2 This is a schematic diagram of the structure of the roll changing and splicing device provided in the embodiments of this application after removing part of the structure, from a first perspective.

[0018] Figure 3 yes Figure 2 A cross-sectional view of the roll changing and feeding device.

[0019] Figure 4 This is a schematic diagram of the rewinding and splicing device provided in this application embodiment after removing part of its structure, viewed from a second perspective.

[0020] Figure 5 This is a schematic diagram of the rewinding and splicing device provided in the embodiments of this application after removing part of its structure, viewed from a third-person perspective.

[0021] Figure 6 This is a schematic diagram of the structure of the roll changing and feeding device provided in this application when the pressure roller drives the material strip to join.

[0022] Figure 7 yes Figure 1 A magnified view of a portion of the image.

[0023] Key reference numerals in the attached drawings: 100 for changing rolls and receiving material; 10 for mounting base; 101 for first base; 102 for second base; 103 for mounting hole; 11 for bearing; 111 for bearing cover; 12 for connecting base; 20 for drive shaft; 30 for pressure roller; 301 for mounting channel; 31 for end cap; 311 for first mounting groove; 312 for first fixing hole; 32 for flange seat; 321 for second mounting groove; 322 for second fixing hole; 40 for overrunning clutch; 41 for inner ring; 42 for outer ring; 50 for pressure roller driver; 60 for lifting structure; 71 for receiving material driver; 72 for slide rail structure; 73 for fixing base; 80 for cutting structure; 81 for cutting blade; 82 for cutting driver; 83 for protective cover; 90 for rotating bracket; 91 for first roll; 92 for second roll; 93 for material strip.

[0024] The following detailed description, in conjunction with the accompanying drawings, will further illustrate this application. Detailed Implementation

[0025] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.

[0026] In this document, references to "embodiment" or "implementation" mean that a particular feature, structure, or characteristic described in connection with an embodiment or implementation may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0027] It should be noted that the terminology in the specification, claims, and accompanying drawings of this application is for describing specific embodiments only and is not intended to limit this application. The terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish different objects, not to describe a specific order. The term "and / or" as used in this application refers to any combination and all possible combinations of one or more of the associated listed items, and includes such combinations.

[0028] Please refer to the following: Figure 1 , Figure 2 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the roll changing and receiving device 100 provided in the embodiments of this application. Figure 2 This is a schematic diagram of the roll-changing and feeding device 100 provided in this embodiment of the application after removing part of its structure, viewed from a first perspective. Figure 3 yes Figure 2 A cross-sectional view of the roll-changing and splicing device 100. In this embodiment, the roll-changing and splicing device 100 includes a rotating bracket 90, a first roll 91, and a second roll 92. The first roll 91 and the second roll 92 are respectively mounted on the rotating bracket 90. The rotating bracket 90 is used to drive the first roll 91 and the second roll 92 to rotate, so that the positions of the first roll 91 and the second roll 92 can be interchanged. A strip 93 is disposed on the first roll 91 and / or the second roll 92. The strip 93 can be a strip used in the lithium battery industry, and the strip 93 can be a negative electrode sheet, a positive electrode sheet, a separator, etc. In some embodiments, the strip 93 can also be a strip from other fields and industries, which is not specifically limited in this application.

[0029] For example, the roll-changing and splicing device 100 can be configured as a winding device. A first roll 91 and a second roll 92 are used to receive the strip 93. The roll-changing and splicing device 100 is used to wind the strip 93 onto the first roll 91 and the second roll 92. After the winding diameter of one of the first roll 91 and the second roll 92 reaches a preset diameter (i.e., the roll is fully wound with strip), the roll-changing and splicing device 100 is used to attach the strip 93 to the other of the first roll 91 and the second roll 92, and cut the strip 93 so that the strip 93 can be wound onto the other of the first roll 91 and the second roll 92, thereby achieving continuous winding of the strip 93, avoiding production interruptions during roll changing, and improving production efficiency.

[0030] In some embodiments, the rewinding and splicing device 100 can also be configured as an unwinding device. A first roll 91 and a second roll 92 are respectively wound with a strip 93. The rewinding and splicing device 100 is used to release the strip 93 from the first roll 91 and the second roll 92. When the strip 93 on one of the first roll 91 and the second roll 92 is about to be completely released, the rewinding and splicing device 100 is used to attach the strip 93 from the other roll of the first roll 91 and the second roll 92 to the roll with the strip 93 about to be completely released, and cut the strip 93, so that the strip 93 can be continuously released, avoiding production interruptions during the rewinding process and improving production efficiency.

[0031] In related technologies, when a roll-changing device joins one roll of material with another, it uses a pressure roller to drive the material roll into contact. However, due to the large speed difference between the linear velocity of the outer shaft surface of the pressure roller and the conveying speed of the material roll, the material roll is subjected to the frictional force of the pressure roller when it comes into contact with the material roll. This causes the tension of the material roll to suddenly increase, making the material roll prone to breakage. This negatively impacts the continuous operation of the production line and reduces production efficiency.

[0032] In this embodiment, the roll-changing and feeding device 100 further includes a mounting base 10, a drive shaft 20, a pressure roller 30, an overrunning clutch 40, and a pressure roller driver 50. The drive shaft 20 is rotatably connected to the mounting base 10. The pressure roller 30 has an installation channel 301. The overrunning clutch 40 is disposed within the installation channel 301. The overrunning clutch 40 includes an inner ring 41 and an outer ring 42. The inner ring 41 is fixedly connected to the drive shaft 20. The outer ring 42 is fixedly connected to the pressure roller 30. The pressure roller driver 50 is mounted on the mounting base 10 and is drively connected to the drive shaft 20. The pressure roller driver 50 drives the drive shaft 20 to rotate, thereby driving the pressure roller 30 to rotate via the overrunning clutch 40. In this embodiment, the pressure roller driver 50 is used to drive the drive shaft 20 to rotate. The drive shaft 20 and the pressure roller 30 are linked by an overrunning clutch 40. When the drive shaft 20 rotates, it can drive the pressure roller 30 to rotate through the overrunning clutch 40, thereby reducing or eliminating the speed difference between the linear speed of the outer shaft surface of the pressure roller 30 and the conveying speed of the material belt 93. This reduces or eliminates the phenomenon of excessive tension in the material belt 93 when the pressure roller 30 contacts it, thereby avoiding the problem of belt breakage during the connection of the material belt 93. This improves the stability and reliability of the roll changing and splicing device 100, enabling the production line to operate reliably and continuously, and improving production efficiency.

[0033] Skilled technicians should understand that Figure 1 and Figure 2 This is merely an example of a rewind splicing device 100 and does not constitute a limitation on the rewind splicing device 100. Furthermore, the rewind splicing device 100 may include, but is not limited to, other types of devices. Figure 1 and Figure 2 The device may include more or fewer components, or a combination of certain components, or different components. For example, the roll changing and splicing device 100 may also include a controller, a frame, etc.

[0034] The overrunning clutch 40 is capable of unidirectional rotation and overrunning rotation. The outer ring 42 of the overrunning clutch 40 is rotatable relative to the inner ring 41 in a first direction, and the outer ring 42 is relatively fixed relative to the inner ring 41 in a second direction. The first direction and the second direction are set opposite to each other. When the pressure roller driver 50 drives the drive shaft 20 to rotate in the first direction, the pressure roller 30, due to inertia, tends to rotate in the second direction relative to the drive shaft 20. This causes the outer ring 42 of the overrunning clutch 40 to tend to rotate in the second direction relative to the inner ring 41. At this time, the inner ring 41 of the overrunning clutch 40 is fixed relative to the outer ring 42, and the overrunning clutch 40 is in a unidirectional rotation state. This causes the drive shaft 20 to drive the pressure roller 30 to rotate in the first direction through the overrunning clutch 40, thereby increasing the rotational speed of the pressure roller 30. This reduces or eliminates the speed difference between the linear velocity of the outer shaft surface of the pressure roller 30 and the conveying speed of the material belt 93, matching the linear velocity of the pressure roller 30 with the conveying speed of the material belt. This reduces the risk of belt breakage of the material belt 93 and reduces or eliminates the wrinkling phenomenon of the material belt 93 located upstream of the pressure roller 30 due to reduced tension. This improves the quality of the material belt 93 and enhances the quality and yield of the products produced on the production line.

[0035] In this embodiment, the pressure roller driver 50 is used to drive the pressure roller 30 to a preset rotational speed. When the pressure roller 30 rotates at the preset speed, the linear velocity of the outer axial surface of the pressure roller 30 is less than the conveying speed of the material belt 93. After the pressure roller 30 contacts the material belt 93, the material belt 93 drives the pressure roller 30 to rotate by friction, making the rotational speed of the pressure roller 30 greater than the rotational speed of the drive shaft 20. At this time, the pressure roller 30 rotates relative to the drive shaft 20 in the first direction, and the rotational speed of the outer ring 42 of the overrunning clutch 40 in the first direction is greater than the rotational speed of the inner ring 41 in the first direction. At this time, the outer ring 42 of the overrunning clutch 40 rotates relative to the inner ring 41 in the first direction, and the overrunning clutch 40 is in an overrunning rotation state, thereby cutting off the transmission link between the pressure roller 30 and the drive shaft 20. This avoids the problem of the pressure roller 30 driving the pressure roller driver 50 to rotate too fast through the drive shaft 20, and also avoids the problem of the pressure roller driver 50 reversing, thereby avoiding the problem of the pressure roller driver 50 burning out, extending the service life of the roll changing and receiving device 100, and reducing maintenance costs. The preset rotation speed can be set according to factors such as the material of the strip 93 and the maximum tension it can withstand; however, no specific limitation is made in this application.

[0036] The pressure roller driver 50 is equipped with a speed detection structure. After the speed detection structure determines that the speed of the pressure roller 30 has reached the preset speed, the roll changing and feeding device 100 controls the pressure roller driver 50 to stop power output, so that the outer ring 42 of the overrunning clutch 40 rotates relative to the inner ring 41 in the first direction, thereby cutting off the transmission link between the pressure roller 30 and the drive shaft 20. The pressure roller driver 50 drives the pressure roller 30 to accelerate to the preset speed. When the pressure roller 30 contacts the material belt 93, it can also prevent the linear velocity of the outer shaft surface of the pressure roller 30 from exceeding the conveying speed of the material belt 93, thereby preventing the material belt 93 from applying a torque in the second direction to the pressure roller 30 through friction. This prevents the pressure roller driver 50 from being damaged due to excessive load or reverse rotation, and allows the roll changing and feeding device 100 to reduce the accuracy of determining the speed of the pressure roller 30 and reduce the difficulty of determining the speed of the pressure roller 30. In some embodiments, when the pressure roller 30 rotates at a preset speed, the linear velocity of the outer axial surface of the pressure roller 30 can also be equal to the conveying speed of the material belt 93, so as to eliminate the speed difference between the linear velocity of the outer axial surface of the pressure roller 30 and the conveying speed of the material belt 93 when the pressure roller 30 contacts the material belt 93, and avoid the material belt 93 from breaking or wrinkling.

[0037] The roll changing and receiving device 100 also includes a bearing 11. The bearing 11 is mounted on the mounting base 10. The drive shaft 20 passes through the bearing 11. The bearing 11 is located on the side of the overrunning clutch 40 away from the pressure roller 30. The bearing 11 serves to support the drive shaft 20, reduce friction between the drive shaft 20 and the mounting base 10, and position the drive shaft 20 to improve the coaxiality between the drive shaft 20 and the pressure roller driver 50. This prevents the pressure roller driver 50 from becoming unstable or damaged due to misalignment with the drive shaft 20, thus extending the service life of the pressure roller driver 50.

[0038] Please refer to the following: Figure 2 , Figure 3 , Figure 4 and Figure 5 , Figure 4 This is a schematic diagram of the roll-changing and feeding device 100 provided in this embodiment of the application after removing part of its structure, viewed from a second perspective. Figure 5This is a structural schematic diagram of the roll changing and receiving device 100 provided in this application embodiment, after removing part of its structure, from a third-person perspective. The mounting base 10 includes a first base 101 and a second base 102. The first base 101 and the second base 102 enclose a mounting hole 103. The drive shaft 20 passes through the mounting hole 103. The first base 101 and the second base 102 are detachably and fixedly connected together. The roll changing and receiving device 100 also includes a frame, which is used to install and fix the rotating bracket 90, the mounting base 10, the lifting structure 60 (see below), and other structures. In this application embodiment, by setting the first base 101 and the second base 102, when the user needs to disassemble the pressure roller 30, the pressure roller 30 can be removed as a whole by removing the first base 101 from the second base 102, avoiding the need to remove the mounting base 10 as a whole from the frame, thus reducing the difficulty of disassembling and assembling the pressure roller 30.

[0039] The roll-changing and receiving device 100 also includes a fixing member for detachably fixing the first seat 101 and the second seat 102 together. The fixing member can be configured as a screw, and the first seat 101 and the second seat 102 are respectively provided with threaded holes that engage with the threaded fastener. In some embodiments, the first seat 101 and the second seat 102 can also be fixedly connected by other means, such as by a snap-fit ​​connection.

[0040] In some embodiments, the roll changing and receiving device 100 further includes a bearing cover 111. The bearing cover 111 is fixedly connected to the first seat 101 and / or the second seat 102 in the mounting base 10 to restrict the movement of the bearing 11 in the mounting hole 103 along the axial direction of the drive shaft 20, so that the bearing 11 is firmly fixed in the mounting hole 103, and to protect the side of the bearing 11, preventing external impurities from falling onto the bearing 11, reducing the wear of the bearing 11, and extending the service life of the bearing 11.

[0041] In this embodiment, the mounting channel 301 extends through both ends of the pressure roller 30 along its axial direction. The drive shaft 20 extends from one end of the pressure roller 30 to the other end. It is understood that the pressure roller 30 has a long shaft structure, and its middle section will bend towards the ground relative to its two ends under gravity. In this embodiment, the drive shaft 20 extends from one end of the pressure roller 30 through the other end, which improves the support provided by the drive shaft 20 to the pressure roller 30, reduces the degree of downward bending of the middle section of the pressure roller 30 under gravity, and ensures that all positions of the pressure roller 30 along its axial direction maintain contact with the material belt 93, avoiding any lack of contact.

[0042] In some embodiments, the mounting channel 301 may not penetrate the pressure roller 30. Two mounting channels 301 are provided. Mounting channels 301 are respectively provided at both ends of the pressure roller 30 along the axial direction of the pressure roller 30. Two drive shafts 20 are provided, and the two drive shafts 20 are respectively inserted into the two mounting channels 301.

[0043] In this embodiment, two overrunning clutches 40 are provided. The two overrunning clutches 40 are respectively provided at the two ends of the pressure roller 30. In this way, by providing overrunning clutches 40 at both ends of the pressure roller 30, when the pressure roller driver 50 drives the pressure roller 30 to rotate through the drive shaft 20 and the overrunning clutches 40, the forces at both ends of the pressure roller 30 can be balanced, thereby improving the smoothness of the pressure roller 30 during rotation.

[0044] In some embodiments, the number of overrunning clutches 40 can be set to one to reduce the manufacturing cost of the roll changing and feeding device 100. In some embodiments, the overrunning clutch 40 can be located at one end of the pressure roller 30, and the other end of the pressure roller 30 can be connected to the drive shaft 20 via a bearing. In some embodiments, the overrunning clutch 40 can also be located in the middle of the pressure roller 30 to improve the balance of the pressure roller 30 during rotation and prevent vibration during rotation. Alternatively, both ends of the pressure roller 30 can be connected to the drive shaft 20 via bearings, or the pressure roller 30 and the drive shaft 20 can be connected by only one overrunning clutch 40.

[0045] The roll changing and receiving device 100 also includes a blind end 31. The blind end 31 is disposed within the mounting channel 301 and is located near the end of the pressure roller 30. The blind end 31 is fixedly connected to the pressure roller 30, and a first mounting groove 311 is provided on the blind end 31. The outer ring 42 of the overrunning clutch 40 is fixed in the first mounting groove 311. Since the pressure roller 30 is arranged in a long shaft shape, the processing of the pressure roller 30 is relatively difficult. In this embodiment, the overrunning clutch 40 and the pressure roller 30 are connected by the blind end 31, which can avoid the overall processing of the pressure roller 30, simplify the processing and assembly difficulty of the overrunning clutch 40, and reduce the processing and assembly cost of the roll changing and receiving device 100. In addition, the blind end 31 can also block the end of the pressure roller 30 to prevent external debris from entering the mounting channel 301 from the end of the pressure roller 30.

[0046] In some embodiments, the roll changing and receiving device 100 further includes a flange seat 32. The flange seat 32 is fixed in a first mounting groove 311. A second mounting groove 321 is provided on the flange seat 32. The outer ring 42 of the overrunning clutch 40 is fixed in the second mounting groove 321, so as to be fixed in the first mounting groove 311 by the flange seat 32. The shape of the flange seat 32 is adapted to the shape of the first mounting groove 311, so that the flange seat 32 is firmly fixed in the first mounting groove 311, avoiding the problem of loosening between the flange seat 32 and the end cap 31. The overrunning clutch 40 and the pressure roller 30 are connected by the end cap 31 and the flange seat 32, which can avoid the integral machining of the pressure roller 30, simplify the machining and assembly difficulty of the overrunning clutch 40, and reduce the machining and assembly cost of the roll changing and receiving device 100. A keyway structure can be provided between the outer ring 42 and the flange seat 32 to restrict the rotation of the outer ring 42 in the second mounting groove 321 along the axial direction of the drive shaft 20. In this embodiment, by setting the end cap 31 and the flange seat 32, the keyway structure can be avoided by directly machining on the pressure roller 30, thereby reducing the machining difficulty of the pressure roller 30.

[0047] The roll changing and feeding device 100 also includes fasteners (not shown). A first fixing hole 312 is provided on the end cap 31. A second fixing hole 322 is provided on the flange seat 32. The first fixing hole 312 and the second fixing hole 322 are respectively used for threaded engagement with the fasteners. The flange seat 32 and the end cap 31 are detachably fixed together by the fasteners. When the overrunning clutch 40 needs to be replaced, the user can loosen the fasteners and remove the flange seat 32 and the overrunning clutch 40, thereby avoiding the need to replace the entire pressure roller 30 and reducing the maintenance cost of the roll changing and feeding device 100.

[0048] The end cap 31 is provided with a first clearance hole. The first clearance hole is provided on the bottom wall of the first mounting groove 311 and extends through the end cap 31. The flange seat 32 is provided with a second clearance hole. The second clearance hole is provided on the bottom wall of the second mounting groove 321 and extends through the flange seat 32. The drive shaft 20 passes through the first clearance hole and the second clearance hole.

[0049] In some embodiments, the roll changing and feeding device 100 further includes a connecting seat 12. The connecting seat 12 is detachably fixedly connected to the mounting seat 10. The pressure roller driver 50 is fixedly connected to the connecting seat 12. The connecting seat 12 is used to fix the pressure roller driver 50 relative to the mounting seat 10. The fixed position of the connecting seat 12 relative to the mounting seat 10 is adjustable to adjust the concentricity between the pressure roller driver 50 and the drive shaft 20, avoiding misalignment between the pressure roller driver 50 and the drive shaft 20. This prevents significant vibration of the pressure roller driver 50 during operation and avoids problems such as breakage of the drive shaft 20 or damage to the pressure roller driver 50 due to vibration, thereby extending the service life of the pressure roller driver 50. The connecting seat 12 is L-shaped. One end of the connecting seat 12 is fixedly connected to the mounting seat 10, and the other end of the connecting seat 12 is fixedly connected to the pressure roller driver 50.

[0050] In this embodiment, the pressure roller 30 is suitable for conveying the belt 93 at a high speed. When the belt 93 is conveying at high speed, if the speed difference between the linear velocity of the outer axial surface of the pressure roller 30 and the conveying speed of the belt 93 is too large when the pressure roller 30 contacts the belt 93, the tension of the belt 93 will be too high, leading to belt breakage. In this embodiment, the pressure roller 30 is driven to rotate by the pressure roller driver 50 to reduce or eliminate the speed difference between the linear velocity of the outer axial surface of the pressure roller 30 and the conveying speed of the belt 93 when the pressure roller 30 contacts the belt 93, thereby preventing belt breakage.

[0051] In some embodiments, when the material belt 93 is in a low-speed conveying state, and the pressure roller 30 is in a relatively stationary state before contacting the material belt 93, when the pressure roller 30 contacts the material belt 93, since the speed difference between the linear velocity of the outer shaft surface of the pressure roller 30 and the conveying speed of the material belt 93 is small, the force exerted by the pressure roller 30 on the material belt 93 is less than the maximum tension that the material belt 93 can withstand. Therefore, when the pressure roller 30 splices the material belt 93, it will not cause the material belt 93 to break. In this embodiment, the first seat 101 and the second seat 102 are detachably connected, and the connecting seat 12 is detachably connected to the mounting seat 10. When the material belt 93 is in a low-speed conveying state and the pressure roller 30 needs to be replaced, the user can easily remove the pressure roller 30 and the pressure roller driver 50 from the mounting seat 10 by removing the second seat 102 and the connecting seat 12. The disassembly and assembly of the pressure roller 30 is easy, thus allowing the user to easily replace the pressure roller 30 with a regular pressure roller without the pressure roller driver 50 according to actual production needs. In this embodiment, the pressure roller 30 is detachably fixed by the first seat 101 and the second seat 102, and the pressure roller driver 50 is detachably fixed by the connecting seat 12. This broadens the application range of the roll changing and splicing device 100, making it compatible with both high-speed and low-speed conveying material belts. This avoids the user having to replace the entire roll changing and splicing device 100 in different application scenarios, reducing the layout cost of the production line. The speed dividing line between low-speed conveying and high-speed conveying can be specifically determined based on factors such as the material of the belt 93 and the maximum tension that the belt 93 can withstand, and is not specifically limited in this application.

[0052] Please refer to the following: Figure 1 , Figure 2 , Figure 4 and Figure 6 , Figure 6 This is a schematic diagram of the structure of the roll changing and feeding device 100 provided in this application embodiment when the pressure roller 30 drives the material strip 93 to engage. The roll changing and feeding device 100 also includes a lifting structure 60. The mounting base 10 is detachably mounted on the lifting structure 60. The lifting structure 60 is used to move the mounting base 10 closer to or away from the material roll. The material roll is either a first material roll 91 or a second material roll 92, as described in this application. Figure 1 and Figure 6 The following description uses the second roll 92 as an example. When the roll-changing and feeding device 100 feeds the strip 93, the lifting structure 60 drives the mounting base 10, along with the pressure roller 30, pressure roller driver 50, and other structures on the mounting base 10, to move towards the roll. At the same time, the pressure roller driver 50 drives the pressure roller 30 to rotate. After the strip 93 is engaged with the roll, the lifting structure 60 drives the mounting base 10 to move away from the roll so that the mounting base 10 can be reset to facilitate the next feeding of the strip 93.

[0053] The roll-changing and splicing device 100 also includes a splicing driver 71. The mounting base 10 is movably disposed relative to the lifting structure 60. The splicing driver 71 drives the mounting base 10 to move between a first position and a second position relative to the lifting structure 60. The second position is located on the side of the first position closer to the roll. In this embodiment, when the strip 93 is spliced, the lifting structure 60 drives the mounting base 10 to move to a preset position at a preset distance from the roll. After the mounting base 10 moves to the preset position, the splicing driver 71 drives the mounting base 10 to move from the first position to the second position. When the mounting base 10 is in the first position, the strip 93 is spaced at a preset distance from the roll; when the mounting base 10 is in the second position, the strip 93 is in contact with the roll, thereby engaging the strip 93 onto the roll. In this embodiment, the lifting structure 60 moves the mounting base 10 to a preset position, and then the receiving driver 71 drives the mounting base 10, along with the pressure roller 30 and the material belt 93, to contact the material roll. On the one hand, this reduces the driving stroke of the receiving driver 71, thereby reducing the overall structural size of the receiving driver 71. On the other hand, when the pressure roller 30 drives the material belt 93 to contact the material roll, the moving distance of the pressure roller 30 can be reduced, thereby reducing the speed fluctuation of the material belt 93, stabilizing the transmission speed of the material belt 93, and avoiding problems such as wrinkles, damage, and belt breakage during material contact. In some embodiments, after the lifting structure 60 moves the mounting base 10 to the preset position, it pauses for a preset time to allow the material belt 93 to drive the pressure roller 30 to rotate, so that the linear velocity of the outer axial surface of the pressure roller 30 is consistent with the conveying speed of the material belt 93.

[0054] The roll-changing and receiving device 100 also includes a slide rail structure 72 and a fixed base 73. The fixed base is connected to the lifting structure 60. The receiving driver 71 and the slide rail structure 72 are fixed to the fixed base 73. The slide rail structure 72 includes a slide rail and a slider slidably connected to the slide rail. The mounting base 10 is fixedly connected to the slider, and the slide rail is fixedly connected to the fixed base 73. The output end of the receiving driver 71 is connected to the slider to drive the mounting base 10 to move relative to the lifting structure 60 through the slider and the slide rail.

[0055] Please refer to the following: Figure 1 , Figure 2 and Figure 7 , Figure 7 yes Figure 1 The enlarged view shows a portion of the image. The roll-changing and receiving device 100 also includes a cutting structure 80. The cutting structure 80 is mounted on the lifting structure 60. The cutting structure 80 is used to cut the strip 93 after the pressure roller 30 completes the joining of the strip 93 with the roll, so that the strip 93 can be continuously conveyed and the production line can be stopped.

[0056] The cutting structure 80 includes a cutting blade 81, a cutting driver 82, and a protective cover 83. The cutting blade 81, cutting driver 82, and protective cover 83 are respectively mounted on the lifting structure 60. The cutting driver 82 drives the cutting blade 81 to move relative to the lifting structure 60 between a first cutting position and a second cutting position. When the cutting blade 81 is in the first cutting position, the cutting blade 81 is separated from the material belt 93, and the protective cover 83 is at least partially located on the side of the cutting blade 81 closest to the material belt 93. The protective cover 83 protects and isolates the cutting blade 81, preventing accidental contact between the cutting blade 81 and the material belt 93 due to factors such as conveying fluctuations of the material belt 93 or vibrations of the lifting structure 60, and preventing the cutting blade 81 from accidentally scratching the material belt 93. When the cutting blade 81 is in the second cutting position, the cutting blade 81 is outside the protective cover 83 and is used to cut the material belt 93.

[0057] The end of the protective cover 83 furthest from the conveyor belt 93 is connected to the lifting structure 60, while the end of the protective cover 83 closest to the conveyor belt 93 is movable relative to the lifting structure 60. The end of the protective cover 83 closest to the conveyor belt 93 can rotate around the end furthest from the conveyor belt 93 as a fulcrum. When the cutting driver 82 drives the cutting blade 81 to rotate from the first cutting position to the second cutting position, the cutting blade 81 can push open the end of the protective cover 83 closest to the conveyor belt 93, allowing the cutting edge of the cutting blade 81 to move outside the protective cover 83. When the cutting driver 82 drives the cutting blade 81 to rotate from the second cutting position to the first cutting position, the end of the protective cover 83 closest to the conveyor belt 93 can return to its original position, thus isolating the cutting edge of the cutting blade 81 from the conveyor belt 93.

[0058] In some embodiments, the roll-changing and splicing device 100 further includes a controller. The controller is used to acquire and control parameters such as the rotational speed of the pressure roller 30, the conveying speed of the strip 93, and the tension of the strip 93. The controller is also used to control the rotational speed of the pressure roller 30 to match the conveying speed of the strip 93 according to the above parameters when the roll-changing and splicing device 100 is splicing, and to accurately control the acceleration time and shutdown time of the pressure roller driver 50, so that the strip 93 can be smoothly joined with the roll, avoiding strip breakage, and improving the automation and intelligence of the strip splicing process.

[0059] The above are merely specific embodiments of this application, but the scope of protection of this application is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in this application, and these modifications or substitutions should all be covered within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A roll-changing and feeding device (100), characterized in that, include: Mounting base (10); A drive shaft (20) is rotatably connected to the mounting base (10); Pressure roller (30), wherein the pressure roller (30) is provided with an installation channel (301); An overrunning clutch (40) is disposed in the mounting channel (301). The overrunning clutch (40) includes an inner ring (41) and an outer ring (42). The inner ring (41) is fixed to the drive shaft (20), and the outer ring (42) is fixed to the pressure roller (30). A pressure roller driver (50) is mounted on the mounting base (10) and is connected to the drive shaft (20) for driving the drive shaft (20) to rotate.

2. The roll changing and feeding device (100) according to claim 1, characterized in that, The number of overrunning clutches (40) is set to one, and the overrunning clutches (40) are located at the end or middle of the pressure roller (30); or, the number of overrunning clutches (40) is set to two, and the two overrunning clutches (40) are respectively located at the two ends of the pressure roller (30).

3. The roll-changing and feeding device (100) according to claim 1 or 2, characterized in that, The mounting channel (301) is provided to pass through both ends of the pressure roller (30) along the axial direction of the pressure roller (30), and the drive shaft (20) extends from one end of the pressure roller (30) to the other end of the pressure roller (30).

4. The roll-changing and feeding device (100) according to claim 1, characterized in that, The roll changing and receiving device (100) also includes a plug (31), which is disposed in the installation channel (301) and near the end of the pressure roller (30). The plug (31) is fixedly connected to the pressure roller (30), and a first installation groove (311) is provided on the plug (31). The outer ring (42) is fixed in the first installation groove (311).

5. The roll changing and feeding device (100) according to claim 4, characterized in that, The roll changing and receiving device (100) further includes a flange seat (32), which is fixed in the first mounting groove (311). A second mounting groove (321) is provided on the flange seat (32), and the outer ring (42) is fixed in the second mounting groove (321).

6. The roll-changing and feeding device (100) according to claim 1, characterized in that, The roll changing and receiving device (100) also includes a connecting seat (12), which is fixedly connected to the mounting seat (10), and the pressure roller driver (50) is fixedly connected to the connecting seat (12).

7. The roll changing and feeding device (100) according to claim 1, characterized in that, The roll changing and receiving device (100) also includes a lifting structure (60), and the mounting base (10) is detachably mounted on the lifting structure (60). The lifting structure (60) is used to move the mounting base (10) closer to or away from the roll.

8. The roll-changing and feeding device (100) according to claim 7, characterized in that, The roll changing and receiving device (100) further includes a receiving driver (71). The mounting base (10) is movably disposed relative to the lifting structure (60). The receiving driver (71) is used to drive the mounting base (10) to move relative to the lifting structure (60) between a first position and a second position. The second position is located on the side of the first position closer to the roll.

9. The roll-changing and feeding device (100) according to claim 7, characterized in that, The roll-changing and receiving device (100) further includes a cutting structure (80), which is mounted on the lifting structure (60). The cutting structure (80) includes a cutting blade (81), a cutting driver (82), and a protective cover (83). The cutting driver (82) is used to drive the cutting blade (81) to move relative to the lifting structure (60) between a first cutting position and a second cutting position. When the cutting blade (81) is in the first cutting position, the cutting blade (81) is separated from the material strip (93), and the protective cover (83) is at least partially located on the side of the cutting blade (81) close to the material strip (93). When the cutting blade (81) is in the second cutting position, the cutting blade (81) is outside the protective cover (83) and is used to cut the material strip (93).

10. The roll-changing and feeding device (100) according to claim 1, characterized in that, The mounting base (10) includes a first base (101) and a second base (102), and a mounting hole (103) is formed between the first base (101) and the second base (102). The drive shaft (20) passes through the mounting hole (103), and the first base (101) and the second base (102) are detachably fixed together.

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