Connecting structure of color coated plate and coating roller

Abstract

The application relates to the field of color-coated plate processing applications, in particular to a color-coated plate connecting structure and a coating roller, wherein the connecting structure mainly comprises a mounting plate which is vertically arranged and used for being fixed with a mounting surface; two color-coated plates which are arranged on the two sides of the mounting plate, one side of the color-coated plate close to the mounting plate is vertically bent to form a connecting part, the surface of the connecting part is not coated with a coating layer, the connecting part is used for abutting against the mounting plate, and the connecting part of the color-coated plate and the abutting surface of the mounting plate are at least partially welded and fixed; and a clamping sleeve which is sleeved outside the connecting parts of the two color-coated plates and covers the abutting part of the connecting part and the mounting plate. The application has the effect of guaranteeing the connection stability of the color-coated plate.

Description

Technical Field

[0001] This application relates to the field of color-coated sheet processing applications, and in particular to a connection structure for color-coated sheets and a coating roller. Background Technology

[0002] Color-coated steel sheet is a type of steel sheet with a colored coating on its surface; it is also called pre-painted steel sheet or coated steel sheet. With the continuous development of color-coated steel sheets, they can be found in industries such as home appliances, decoration, medical care, and construction. In the construction industry, color-coated steel sheets are mainly used for surface decoration of building walls and roofs.

[0003] When using color-coated steel sheets as roof surface decoration structures, the limited production size of steel sheets inevitably leads to connection issues. Traditional connection methods for color-coated steel sheets mainly include overlapping, crimping, and interlocking. However, none of these connection methods can completely prevent the risk of water leakage. Therefore, welding is a better method. Welding is generally done by bending the edge of the color steel sheet and welding it against the installation strip on the roof. However, when welding color-coated steel sheets, the coating at the welding position can make welding difficult or result in insufficient strength after welding. Summary of the Invention

[0004] To ensure the connection stability of color-coated steel sheets, this application provides a connection structure for color-coated steel sheets and a coating roller.

[0005] The first aspect of this application provides a connection structure for color-coated steel sheets, which adopts the following technical solution: A connection structure for color-coated steel sheets includes: Mounting plate, vertically set, for fixing to the mounting surface; Two color-coated steel sheets are arranged on both sides of the mounting plate. The side of each color-coated steel sheet closest to the mounting plate is vertically bent to form a connecting part. The surface of the connecting part is not coated and is used to abut against the mounting plate. The connecting part of the color-coated steel sheet is at least partially welded to the abutting surface of the mounting plate. A sleeve is fitted onto the outside of the connecting part of the two color-coated plates, covering the abutting part between the connecting part and the mounting plate.

[0006] By adopting the above technical solution, the connecting part of the two color-coated plates is not coated and is welded to the mounting plate to achieve the connection and fixation between the two color-coated plates. Then, by using a ferrule to cover the abutting part between the connecting part and the mounting part, the sealing of the connecting part of the two color-coated plates can be further guaranteed, preventing rainwater and other dirt from entering.

[0007] Optionally, both sides of the mounting plate are formed with protruding pillars; The connecting parts of the color-coated plates are all formed with grooves. When the connecting parts abut against the mounting plate, the protrusions are inserted into the grooves.

[0008] By adopting the above technical solution, when connecting the mounting plate and the color-coated plate, the mutual cooperation of the protrusion and the groove can achieve accurate positioning of the color-coated plate and the mounting plate, which facilitates welding and improves the connection stability of the mounting plate and the color-coated plate. After the mounting plate and the color-coated plate are welded, when the ferrule is put on, the ferrule clamps again on the connecting part of the color-coated plate and the mounting plate that are abutting each other, so that even if the connecting part of the mounting plate and the color-coated plate is not welded properly, the mounting plate and the color-coated plate can still maintain a stable relative connection.

[0009] Optionally, the card slot of the sleeve is at least wider at the top than the width of the part where the two color-coated plates abut against the mounting plate; The upper end of the color-coated sheet connecting part protrudes from the upper end of the mounting plate, and the part of the color-coated sheet protruding from the mounting plate is formed with a slot that penetrates the color-coated sheet. A pin is fixed in the middle of the top surface of the slot of the sleeve along the width of the slot, and the pin forms a gap with the side wall of the slot of the sleeve that is not less than the thickness of the color-coated plate. When the ferrule is fitted onto the upper side of the connecting part of the two color-coated plates, the part of the connecting part protruding from the mounting plate can be elastically deformed and inserted between the insert post and the slot of the ferrule until the insert post is inserted into the slot, thereby preventing the color-coated plates from detaching from the ferrule.

[0010] By adopting the above technical solution, since the upper end of the connecting part protrudes from the upper end of the mounting plate, and the upper groove width of the slot is greater than the groove width of the connecting part and the mounting plate abutting part, the part of the connecting part of the two color-coated plates that protrudes from the mounting plate can form a certain amount of elastic deformation by its own elastic deformation, tending to move away from each other. Thus, when the sleeve is placed between the connecting part of the welded color-coated plate and the mounting plate, the upper end of the connecting part can bend towards the gap on both sides of the insertion post by its own deformation capacity and rise from the gap until the end of the insertion post corresponds to the slot of the connecting part. At this time, the connecting part loses the force that causes it to deform and will immediately reset, and the insertion post will be inserted into the slot, thereby limiting the relative position of the sleeve and the two color-coated plates and preventing the sleeve from detaching from the two color-coated plates.

[0011] Optionally, the card slot of the sleeve has protruding inserts on both sides, and a gap of not less than the thickness of two color-coated plates is formed between the inserts. The upper end of the color-coated sheet connecting part protrudes from the upper end of the mounting plate, and the part of the color-coated sheet protruding from the mounting plate is formed with a slot that penetrates the color-coated sheet. When the sleeve is fitted onto the upper side of the connecting part of the two color-coated plates, the part of the connecting part protruding from the mounting plate is elastically deformed and inserted into the gap between the two pins until the pins are inserted into the slots, thereby preventing the color-coated plates from detaching from the sleeve.

[0012] By adopting the above technical solution, since the upper end of the connecting part protrudes from the upper end of the mounting plate, the part of the connecting part of the two color-coated plates that protrudes from the mounting plate can form a certain amount of elastic deformation by its own elastic deformation, tending to move closer to each other. Thus, when the ferrule is placed between the connecting part of the welded color-coated plate and the mounting plate, the upper end of the connecting part can bend towards the gap between the two prongs by its own deformation capacity and rise from the gap until the end of the first prong corresponds to the slot of the connecting part. At this time, the connecting part loses the force that causes it to deform and will immediately reset, and the prong will be inserted into the slot, thereby limiting the relative position of the ferrule and the two color-coated plates and preventing the ferrule from detaching from the two color-coated plates.

[0013] Optionally, each of the inserts has a guide slope formed on its lower side so that the upper side of the connector enters the gap along the guide slope.

[0014] By adopting the above technical solution, when the upper side of the connecting part abuts against the guide slope, the guide slope can push the upper side of the connecting part of the color-coated plate to bend in an intermittent direction, so that the upper side of the connecting part of the color-coated plate is inserted into the corresponding gap of the slot.

[0015] The first aspect of this application provides a coating roller, which adopts the following technical solution: A coating roller, comprising: Roller shaft; Two coating sleeves are coaxially fitted onto the roller shaft, with a gap between the two coating sleeves; A coating ring, located between two coating sleeves, is coaxially and detachably sleeved on the roller shaft, and the outer diameter of the coating ring is the same as the outer diameter of the coating sleeve.

[0016] By adopting the above technical solution, when forming a color-coated sheet with overall coating, the coating sleeve and the coating ring are used to form a coating roller to achieve overall coating of the steel sheet. When it is necessary to form a color-coated sheet with no coating in some areas, the coating ring can be removed. At this time, when coating is performed again, the part of the color-coated sheet corresponding to the coating ring cannot be coated, so as to facilitate subsequent bending and welding operations.

[0017] Optionally, the roller shaft is formed with an elongated groove along its axial direction; A sliding plate is radially movable within the long groove along the roller shaft, and two locking elements are protruding from the outer side of the sliding plate. The inner peripheral wall of the coated sleeve is formed with a locking groove for cooperating with the locking component; The roller is also provided with a retaining element, which can keep the locking element in a locked position with the locking groove.

[0018] By adopting the above technical solution, when disassembling the coating ring, the sliding plate is pressed down, causing the sliding plate to drive each locking component to disengage from the locking groove. At this time, the coating sleeve can be removed and the coating ring can be disassembled. After the coating ring is disassembled, the coating sleeve is put back on the roller shaft, so that the locking groove of the coating sleeve corresponds to the locking component. Then, the sliding plate is moved to make the locking component fit with the locking groove. Then, the retaining component keeps the locking component and the locking groove in place, thus completing the fixation of the coating sleeve and the roller shaft, thereby realizing the disassembly of the coating ring.

[0019] Optionally, both coating sleeves have annular grooves and receiving grooves formed at their proximal ends. The annular grooves are coaxially arranged with the coating sleeves and are connected to the receiving grooves. A further feature is provided between the two coating sleeves: A rotating shaft, which reciprocates along the axial direction of the coating sleeve, is disposed within a storage groove. The ring belt is fixed to the rotating shaft at one end, and both sides of the ring belt are formed with insert edges for fitting into the ring groove. When the shaft rotates forward, it can drive the ring belt to unwind, so that the insert edges on both sides of the ring belt enter the ring groove from the receiving groove, until the ring belt is joined end to end in the ring groove to form a coated ring; when the shaft rotates in reverse, it can drive the ring belt to rewind, so that the insert edges on both sides of the ring belt enter the receiving groove from the ring groove.

[0020] By adopting the above technical solution, as the rotating shaft rotates forward, the belt will also unwind synchronously with the rotation of the roller shaft, allowing the inserts on both sides of the belt to enter the ring groove. Then, as the rotating shaft continues to unwind, the inserts on both sides of the belt continue to move along the ring groove until the beginning and end of the belt meet in the ring groove, forming a coating ring, which can then be used for overall coating of the color-coated sheet. Conversely, as the rotating shaft rotates in the opposite direction, the belt will also wind synchronously with the rotation of the shaft, allowing the inserts on both sides of the belt to enter the receiving groove along the ring groove until the belt is completely removed from the ring groove. During coating, the gap between adjacent coating sleeves cannot be coated, facilitating subsequent bending and welding of the color-coated sheet.

[0021] Optional, also includes: A miniature electric cylinder is fixed to the near ends of two coated sleeves. The telescopic rod of the miniature electric cylinder extends to abut against the ring belt at the connection between the receiving groove and the ring groove, so as to restrict the winding or unwinding of the ring belt.

[0022] By adopting the above technical solution, after the rotating shaft completes winding or unwinding, the telescopic rod of the miniature electric cylinder extends and can abut against the ring belt at the connection between the receiving groove and the ring groove, thus preventing the ring belt from moving.

[0023] Optional, also includes: A miniature motor, fixed inside any coated sleeve, is used to drive the shaft to rotate.

[0024] By adopting the above technical solution, the micro motor drives the rotating shaft to rotate, thereby realizing the winding or unwinding of the belt.

[0025] In summary, this application includes at least one of the following beneficial technical effects: 1. The connecting part of the two color-coated plates is not coated and is welded to the mounting plate to achieve the connection and fixation between the two color-coated plates. Then, a ferrule is placed on the outside of the mounting part of the two color-coated plates to cover the abutting part between the connecting part and the mounting part, which can further ensure the sealing of the connecting part of the two color-coated plates and prevent rainwater and other dirt from entering.

[0026] 2. When connecting the mounting plate and the color-coated plate, the cooperation between the protrusion and the groove enables accurate positioning of the color-coated plate and the mounting plate, facilitating welding and improving the connection stability between the mounting plate and the color-coated plate. After the mounting plate and the color-coated plate are welded, when the ferrule is then fitted, the ferrule clamps again onto the connecting part of the color-coated plate and the mounting plate, so that even if the connecting part of the mounting plate and the color-coated plate is poorly welded, the mounting plate and the color-coated plate can still maintain a stable relative connection. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the overall structure in Embodiment 1 of the connection structure of the color-coated steel sheet in this application; Figure 2 This is a schematic diagram of the overall structure in Embodiment 2 of the connection structure of the color-coated steel sheet in this application; Figure 3 yes Figure 2 Enlarged diagram of section A in the middle; Figure 4 This is a schematic diagram of the slot structure in Embodiment 3 of the connection structure of the color-coated sheet in this application; Figure 5 This is a schematic diagram of the slot structure in Embodiment 4 of the connection structure of the color-coated sheet in this application; Figure 6 This is a schematic diagram of the overall structure of Embodiment 1 of the coating roller in this application; Figure 7 This is a cross-sectional schematic diagram of the coating sleeve in Embodiment 1 of the coating roller in this application; Figure 8 This is a schematic diagram of the coating sleeve in Embodiment 2 of the coating roller in this application; Figure 9 This is a schematic diagram of the coating ring structure in Embodiment 2 of the coating roller in this application.

[0028] Explanation of reference numerals in the attached drawings: 1. Mounting plate; 11. Connecting plate; 12. Protruding post; 2. Color-coated sheet; 21. Connecting part; 22. Groove; 23. Slot; 3. Slip sleeve; 31. Narrowed opening; 32. Slot; 33. Insert post; 4. Roller; 41. Long groove; 42. Slide plate; 421. Locking element; 43. Holding element; 5. Coating sleeve; 51. Locking groove; 52. Ring groove; 53. Storage groove; 54. Connecting groove; 6. Coating ring; 61. Insertion edge; 62. Ring band; 621. Contact arc surface; 7. Shaft; 71. Miniature motor; 8. Miniature electric cylinder. Detailed Implementation

[0029] The following is a detailed description of the scheme of this application with reference to the accompanying drawings.

[0030] The first aspect of this application discloses a connection structure for color-coated steel sheets.

[0031] Example 1: Reference Figure 1 A connection structure for color-coated steel sheets includes a mounting plate 1, a color-coated steel sheet 2, and a retainer 3.

[0032] The mounting plate 1 is vertically arranged, and a horizontally arranged connecting plate 11 is integrally formed on the lower side of the mounting plate 1. The connecting plate 11 is used to fix it to the mounting surface. Specifically, bolts or screws can be inserted through the connecting plate 11 to fix the mounting plate 1 to the mounting surface.

[0033] Mounting plate 1 is used to connect with color-coated plate 2. Color-coated plate 2 is arranged on both sides of mounting plate 1, and the side of color-coated plate 2 closest to mounting plate 1 is bent upward to form a connecting part 21. The connecting part 21 is not coated. The connecting part 21 abuts against mounting plate 1, and the contact surface between the connecting part 21 and mounting plate 1 is fully or partially welded to achieve the connection and fixation between color-coated plate 2 and mounting plate 1.

[0034] The sleeve 3 has a rectangular structure. The lower middle part of the sleeve 3 forms a constricted part 31, and the inside of the sleeve 3 forms a slot 32. The lower side of the sleeve 3 is open. After the connecting part 21 of the color-coated plate 2 is welded to the mounting plate 1, the sleeve 3 is sleeved on the outside of the connecting part 21 of the two color-coated plates 2. The constricted part 31 of the sleeve 3 can clamp the connecting part 21 of the two color-coated plates 2, thus completing the fixation of the two color-coated plates 2 and the sleeve 3. This allows the sleeve 3 to cover the abutting part of the connecting part 21 of the two color-coated plates 2 and the mounting plate 1, protecting the abutting part of the two color-coated plates 2 and the mounting plate 1.

[0035] Furthermore, to improve the connection between the color-coated sheet 2 and the sleeve 3, after the sleeve 3 is placed on the outside of the two color-coated sheets 2, the sleeve 3 can be welded and fixed to the two color-coated sheets 2 again.

[0036] The implementation principle of the connection structure of the color-coated steel sheet in Embodiment 1 of this application is as follows: the connection part 21 of the two color-coated steel sheets 2 is not coated, and it is welded to the mounting plate 1 to achieve the connection and fixation between the two color-coated steel sheets 2. Then, the sleeve 3 is sleeved on the outside of the connection part 21 of the two color-coated steel sheets 2 to cover the abutting part of the connection part 21 and the mounting plate 1, which can further ensure the sealing of the connection part 21 of the two color-coated steel sheets 2 and prevent rainwater and other dirt from entering.

[0037] Example 2, Reference Figure 2 and Figure 3 A connection structure for color-coated steel sheets, which differs from that in Example 1, is as follows: Both sides of the mounting plate 1 are horizontally formed with protruding posts 12, and the connecting parts 21 of the color-coated plate 2 are all formed with grooves 22. When the connecting parts 21 of the color-coated plate 2 are welded to the mounting plate 1, the protruding posts 12 are inserted into the grooves 22 to ensure the relative positioning of the color-coated plate 2 and the mounting plate 1.

[0038] The advantage of this embodiment is that, when connecting the mounting plate 1 and the color-coated plate 2, the mutual cooperation of the protrusion 12 and the groove 22 can achieve accurate positioning of the color-coated plate 2 and the mounting plate 1, which facilitates welding and improves the connection stability of the mounting plate 1 and the color-coated plate 2. After the mounting plate 1 and the color-coated plate 2 are welded, the sleeve 3 is fitted. The sleeve 3 can clamp the connecting part 21 of the color-coated plate 2 and the mounting plate 1 that are abutting each other, so that even if the connecting part 21 of the mounting plate 1 and the color-coated plate 2 develops a false weld due to long-term operation, the mounting plate 1 and the color-coated plate 2 can still maintain a stable relative connection.

[0039] Example 3, Reference Figure 4 A connection structure for color-coated steel sheets, which differs from that in Embodiment 1 or Embodiment 2, is as follows: The upper width of the slot 32 is greater than the width of the part where the two color-coated plates 2 abut against the mounting plate 1. The upper end of the connecting part 21 of the color-coated plate 2 protrudes from the upper end of the mounting plate 1, and the part of the connecting part 21 of the color-coated plate 2 that protrudes from the mounting plate 1 is formed with a slot 23 that passes through the connecting part 21.

[0040] A pin 33 is fixed in the middle of the top surface of the slot 32 along the width of the slot. A gap of not less than the thickness of the color-coated plate 2 is formed between the two ends of the pin 33 and the two walls of the slot 32. Guide slopes are formed on the lower sides of both ends of the pin 33. The guide slopes are inclined upward from the middle of the pin 33 toward its two ends.

[0041] When the sleeve 3 is fitted onto the upper side of the connecting part 21 of the two color-coated plates 2, the part of the connecting part 21 of the two color-coated plates 2 protruding from the mounting plate 1 will respectively abut against the two guide slopes on the lower side of the insert post 33, causing the upper end of the connecting part 21 of the two color-coated plates 2 to bend in opposite directions until the upper end of the connecting part 21 of the color-coated plates 2 is inserted between the slots 32 of the insert post 33. Then the sleeve 3 continues to move downward. When the slot 23 of the connecting part 21 of the color-coated plates 2 corresponds to the insert post 33, the color-coated plates 2 deform and reset, and the insert post 33 can be inserted into the slot 23 to prevent the color-coated plates 2 from detaching from the sleeve 3.

[0042] The implementation principle of a connection structure for a color-coated steel sheet according to an embodiment of this application is as follows: Since the upper end of the connecting part 21 protrudes from the upper end of the mounting plate 1, and the upper groove width of the slot 32 is greater than the groove width of the connecting part 21 and the mounting plate 1, the part of the connecting part 21 of the two color-coated plates 2 that protrudes from the mounting plate 1 can undergo elastic deformation to tend to move away from each other and form a certain amount of elastic deformation. Thus, when the sleeve 3 is placed between the connecting part 21 of the welded color-coated plate 2 and the mounting plate 1, the upper end of the connecting part 21 can bend towards the gap on both sides of the insertion post 33 and rise from the gap until the end of the insertion post 33 corresponds to the slot 23 of the connecting part 21. At this time, the connecting part 21 loses the force that causes it to deform and will immediately reset, and the insertion post 33 will be inserted into the slot 23, thereby limiting the relative position of the sleeve 3 and the two color-coated plates 2 and preventing the sleeve 3 from detaching from the two color-coated plates 2.

[0043] Example 4, Reference Figure 5 A connection structure for color-coated steel sheets, which differs from that in Embodiment 1 or 2, is as follows: Both sides of the slot 32 have protruding inserts 33 along the width direction on the upper part of the slot. A gap of not less than the sum of the thicknesses of the two color-coated plates 2 is formed between the two inserts 33. The lower side of the near end of the two inserts 33 is formed with a guide slope. The guide slope is set upward from the opposite end of the two inserts 33 to the near end of the two inserts 33.

[0044] The upper end of the connecting part 21 of the color-coated plate 2 protrudes from the upper end of the mounting plate 1, and the part of the color-coated plate 2 protruding from the mounting plate 1 is formed with a slot 23 that penetrates the color-coated plate 2. When the sleeve 3 is sleeved on the upper side of the connecting part 21 of the two color-coated plates 2, the upper end of the connecting part 21 of the color-coated plate 2 will abut against the guide slope of the insertion post 33. Then, with the guidance of the guide slope and the elastic deformation capability of the connecting part 21 of the color-coated plate 2, the upper end of the connecting part 21 of the color-coated plate 2 will be inserted between the two insertion posts 33. When the slot 23 of the connecting part 21 of the color-coated plate 2 corresponds to the insertion post 33, the upper end of the connecting part 21 of the color-coated plate 2 will be reset through elastic deformation, and the insertion post 33 will be directly inserted into the slot 23, restricting the color-coated plate 2 from detaching from the sleeve 3.

[0045] The implementation principle of the connection structure of the color-coated steel sheet in this application embodiment is as follows: Since the upper end of the connecting part 21 protrudes from the upper end of the mounting plate 1, the part of the connecting part 21 of the two color-coated steel sheets 2 that protrudes from the mounting plate 1 can form a certain amount of elastic deformation by its own elastic deformation, tending to move closer to each other. Thus, when the sleeve 3 is placed between the connecting part 21 of the welded color-coated steel sheet 2 and the mounting plate 1, the upper end of the connecting part 21 can bend towards the near ends of the two inserts 33 by its own deformation ability, so that the connecting part 21 can rise relative to the sleeve 3 until the end of the insert 33 corresponds to the slot 23 of the connecting part 21. The connecting part 21 loses the force that causes it to deform and will immediately reset, and the insert 33 will be inserted into the slot 23. This restricts the relative position of the sleeve 3 and the two color-coated steel sheets 2, prevents the sleeve 3 from detaching from the two color-coated steel sheets 2, and achieves a tight connection between the sleeve 3 and the two color-coated steel sheets 2.

[0046] The second aspect of this application discloses a coating roller for producing the color-coated sheet 2 described in the above embodiments.

[0047] Example 1, Reference Figure 6 and Figure 7 A coating roller includes a roller shaft 4 and a coating cylinder disposed on the roller shaft 4. The coating cylinder mainly includes a coating sleeve 5 and a coating ring 6.

[0048] There are two coating sleeves 5, which are coaxially sleeved on the roller shaft 4, and a gap is formed between the two coating sleeves 5.

[0049] Specifically, the peripheral wall of the roller 4 is formed with a long groove 41 along its axial direction. The depth direction of the long groove 41 is set radially along the roller 4, and the length of the long groove 41 is greater than the length of the coating roller. The long groove 41 contains a sliding plate 42 with the same length direction as it, and the length of the sliding plate 42 is the same as the length of the long groove 41. The sliding plate 42 slides in the long groove 41 along the depth direction. On the outside of the sliding plate 42, that is, on the side of the sliding plate 42 away from the long groove 41, two locking members 421 are protruding. The two locking members 421 are set corresponding to the two coating sleeves 5. The inner peripheral wall of the two coating sleeves 5 is formed with locking grooves 51. The sliding plate slides away from the direction of the roller 4, so that the locking members 421 can be inserted into the locking grooves 51. The roller 4 is also provided with a retaining member 43, which is used to fix the relative position of the locking members 421 and the locking grooves 51 when they are engaged.

[0050] Furthermore, the retaining member 43 can be a push spring, which is fixed between the long groove 41 and the slide plate 42. Under normal conditions, the push spring can push the slide plate 42 away from the long groove 41 to keep the locking member 421 inserted in the locking groove 51. When it is necessary to release the locking member 421 from the locking groove 51, the slide plate 42 can be pressed directly, and the sliding plate 42 can drive the locking member 421 to move synchronously to the locking groove 51 that is released from the coating sleeve 5.

[0051] In addition, the retainer 43 can also be a bolt. The bolt is arranged radially along the roller shaft 4 at one end of the long groove 41. The end of the bolt is rotatably connected to the bottom surface of the long groove 41, and the bolt is threadedly connected to the slide plate 42. By rotating the bolt, the slide plate 42 can be driven to slide along the depth direction of the long groove 41, so that the locking member 421 can be kept inserted into or disengaged from the locking groove 51 of the coating sleeve 5.

[0052] Both coating sleeves 5 have coaxially formed annular grooves 52 at their proximal ends. A coating ring 6 is placed between the two coating sleeves 5, and both sides of the coating ring 6 have formed insert edges 61. The insert edges 61 of the coating ring 6 are inserted into the annular grooves 52 of the two coating sleeves 5, thus connecting the coating ring 6 to the coating sleeves 5 and maintaining their coaxial arrangement. Furthermore, the diameter of the coating ring 6 is the same as the diameter of the coating sleeves 5. That is, the integral coating roller formed by the coating ring 6 and the coating sleeves 5 can complete the overall coating of the color-coated sheet 2. After removing the coating ring 6, the coating sleeves 5, in conjunction with the roller shaft 4, can leave the position on the color-coated sheet 2 corresponding to the coating ring 6 uncoated, facilitating welding of the uncoated portion of the color-coated sheet 2 during subsequent processing.

[0053] In summary, the principle of this application embodiment is as follows: when forming a color-coated sheet 2 with overall coating, the coating sleeve 5 and the coating ring 6 are used to form a coating roller to achieve overall coating of the steel sheet; when it is necessary to form a color-coated sheet 2 with no coating on some parts, the coating ring 6 can be removed. At this time, when coating is performed again, the part of the color-coated sheet 2 corresponding to the coating ring 6 cannot be coated, so as to facilitate subsequent bending and welding operations.

[0054] Example 2, Reference Figure 8 and Figure 9 A coating roller includes a roller shaft 4 and a coating cylinder disposed on the roller shaft 4. The coating cylinder mainly includes a coating sleeve 5 and a coating ring 6.

[0055] There are two coating sleeves 5, which are coaxially fitted onto the roller shaft 4, with a gap between them. A coating ring 6 is coaxially placed between the two coating sleeves 5.

[0056] Specifically, a receiving groove 53 is formed at the near ends of the two coating sleeves 5. The receiving groove 53 is located on one side of the circumference of the roller 4. A rotating shaft 7 is also rotatably arranged in the gap between the two coating sleeves 5. The axis of the rotating shaft 7 is the same as the axis of the roller 4, and the rotating shaft 7 is located in the receiving groove 53. A micro motor 71 is fixed at one end of the coating sleeve 5 corresponding to the roller 4. The micro motor 71 can drive the rotating shaft 7 to rotate in both directions.

[0057] A ring band 62 is also provided between the two coating sleeves 5. One end of the ring band 62 is fixed to the rotating shaft 7. Insertion edges 61 are formed on both sides of the ring band 62. Ring grooves 52 are also formed at the near ends of the two coating sleeves 5. The ring grooves 52 are coaxially arranged with the coating ring 6. A connecting groove 54 is formed on the coating sleeve 5 at the position between the receiving groove 53 and the ring groove 52. The connecting groove 54 connects the ring groove 52 and the receiving groove 53. The insertion edges 61 on both sides of the ring band 62 can be inserted into the ring groove 52 and the connecting groove 54.

[0058] As the rotating shaft 7 rotates clockwise, the ring belt 62 will also unwind synchronously with the rotation of the roller shaft 4, allowing the insert edges 61 on both sides of the ring belt 62 to enter the annular groove 52 through the connecting groove 54. Then, as the rotating shaft 7 continues to unwind, the insert edges 61 on both sides of the ring belt 62 continue to move along the annular groove 52 until the beginning and end of the ring belt 62 meet in the annular groove 52, forming a coating ring 6, which can then be used for overall coating of the color-coated sheet 2. Conversely, as the rotating shaft 7 rotates counterclockwise, the ring belt 62 will also rewind synchronously with the rotation of the rotating shaft 7, allowing the insert edges 61 on both sides of the ring belt 62 to enter the connecting groove 54 from the annular groove 52, until the ring belt 62 completely detaches from the annular groove 52. During coating, the gap between adjacent coating sleeves 5 cannot be coated, facilitating subsequent bending and welding of the color-coated sheet 2.

[0059] Furthermore, a miniature electric cylinder 8 is fixed at the proximal end of the adjacent coating sleeve 5. The telescopic rod of the miniature electric cylinder 8 can extend into the connecting groove 54. When the rotating shaft 7 completes the winding or unwinding of the ring belt 62, the telescopic rod of the miniature electric cylinder 8 extends and can abut against the ring belt 62, thereby restricting the movement of the ring belt 62.

[0060] Furthermore, the first end of the ring band 62 is formed with a contact arc surface 621, and magnetic suction plates are fixed to the contact arc surface 621 and the part that connects the first and last ends of the contact arc surface 621. When the ring band 62 is connected end to end in the ring groove 52, the adsorption of the magnetic suction plates can ensure that the ring band 62 is tightly abutted.

[0061] In summary, the principle of this embodiment is as follows: When coating the entire color-coated sheet 2, the micro motor 71 drives the rotating shaft 7 to rotate clockwise, and the ring belt 62 will also be unwound synchronously with the rotation of the roller shaft 4, so that the insert edges 61 on both sides of the ring belt 62 enter the ring groove 52 through the connecting groove 54. Then, as the rotating shaft 7 continues to roll, the ring belt 62 continues to be unwound until the beginning and end of the ring belt 62 will meet in the ring groove 52 to form the coating ring 6. Then, the micro electric cylinder 8 drives the telescopic rod to extend and press the ring belt 62 at the position of the connecting groove 54, which can restrict the ring belt 62 from moving and ensure the formation of the coating ring 6. Thus, the coating can be applied to the outer peripheral surface of the coating sleeve 5 and the coating ring 6, and then the substrate can be coated by the coating sleeve 5 and the coating ring 6 to achieve the overall coating of the color-coated sheet 2.

[0062] When coating the entire color-coated sheet 2, the telescopic rod of the micro electric cylinder 8 first retracts, and the micro motor 71 drives the rotating shaft 7 to rotate in the opposite direction, winding up the ring belt 62. This causes the insert edges 61 on both sides of the ring belt 62 to enter the connecting groove 54 from the ring groove 52 and be wound onto the rotating shaft 7 with the receiving groove 53. When the ring belt 62 is completely separated from the ring groove 52, the telescopic rod is extended by the micro electric cylinder 8, and the ring belt 62 is tightened again at the position of the connecting groove 54, which can restrict the ring belt 62 from moving and ensure that the coating ring 6 does not enter the ring groove 52. At this time, the coating can only be applied to the surface of the coating sleeve 5. The substrate is then coated through the coating sleeve 5. The gap part of the coating sleeve 5 cannot be coated, thus forming a color-coated sheet 2 with some uncoated parts, so that the color-coated sheet 2 can be bent and welded in the uncoated parts in the subsequent process.

[0063] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A coating roller, characterized in that, include: Roller (4); Two coating sleeves (5) are coaxially sleeved on the roller shaft (4), and a gap is formed between the two coating sleeves (5); A coating ring (6) is located between two coating sleeves and is coaxially and detachably sleeved on the roller shaft (4). The outer diameter of the coating ring (6) is the same as the outer diameter of the coating sleeve (5). Both coating sleeves (5) have annular grooves (52) and storage grooves (53) formed at their adjacent ends. The annular grooves (52) are coaxially arranged with the coating sleeves (5) and the annular grooves (52) are connected to the storage grooves (53). A further feature is provided between the two coating sleeves (5): The rotating shaft (7) is disposed in the receiving groove (53) and reciprocates along the axial direction of the coating sleeve (5). The ring (62) is wrapped and fixed at one end to the rotating shaft (7). Both sides of the ring (62) are formed with insert edges (61) for fitting with the ring groove (52). When the rotating shaft (7) rotates forward, it can drive the ring belt (62) to unwind, so that the insert edges (61) on both sides of the ring belt (62) enter the ring groove (52) from the receiving groove (53) until the ring belt (62) is connected end to end in the ring groove (52) to form a coated ring (6); when the rotating shaft (7) rotates in reverse, it can drive the ring belt (62) to rewind, so that the insert edges (61) on both sides of the ring belt (62) enter the receiving groove (53) from the ring groove (52).

2. The coating roller according to claim 1, characterized in that: The roller (4) has a long groove (41) formed along its axial direction; A slide plate (42) is provided radially within the long groove (41) along the roller shaft (4), and two locking elements (421) are protruding from the outer side of the slide plate (42). The inner peripheral wall of the coated sleeve (5) is formed with a locking groove (51) for cooperating with the locking member (421); The roller (4) is also provided with a retainer (43) which can keep the locking member (421) engaged with the locking groove (51).

3. The coating roller according to claim 1, characterized in that, Also includes: A miniature electric cylinder (8) is fixed to the near ends of two coated sleeves (5). The telescopic rod of the miniature electric cylinder (8) extends and can press against the ring belt (62) in the connecting groove (54) between the receiving groove (53) and the ring groove (52) to restrict the winding or unwinding of the ring belt (62).

4. The coating roller according to claim 3, characterized in that, Also includes: A micro motor (71) is fixed inside any of the coated sleeves (5) and is used to drive the rotating shaft (7) to rotate.

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