A high temperature steel coil inner ring label device

Abstract

The utility model discloses a high temperature steel roll inner circle label device, including mechanical arm, laser engraving device, water cooling machine and air cooling device, laser engraving device fixed mounting on the free end end portion of mechanical arm, laser engraving device includes the outer box, and laser engraving device outer sleeve inherent water cooling box, the clearance between water cooling box with laser engraving device forms the closed water cooling chamber, water cooling chamber with water cooling machine circulation intercommunication, air cooling device is connected with cold -blast pipe, and cold -blast pipe is inserted into the outer box with laser lens is close to. The utility model is based on the integrality cooling of the outer box of laser engraving device, still carries out the targeted local cooling to the laser lens of being seriously affected by high temperature simultaneously, greatly reduces the temperature of laser engraving device and the laser lens in the outer box, realizes the label of steel roll inner circle.

Description

Technical Field

[0001] This utility model relates to the technical field of steel coil labeling equipment, and in particular to a labeling device for the inner ring of a high-temperature steel coil. Background Technology

[0002] At the end of a hot-rolled steel production line, the surface temperature of the steel coil remains as high as 500-700℃ after being formed by the coiler. To achieve quality traceability and prevent cross-selling, permanent markings need to be engraved on both the inner and outer rings of the steel coil. Traditionally, manual labeling is the primary method. However, this method is no longer suitable for the permanent marking requirements under high temperature, high humidity, and high friction conditions due to defects such as easy label peeling, fading, and insufficient temperature resistance. It is gradually being replaced by laser engraving technology. Currently, mature laser engraving solutions are mainly for the outer ring of the steel coil. High-power pulsed lasers are used to ablate clear, traceable characters and QR codes on the outer surface of the steel coil, and the process is relatively mature. Compared to the outer ring, the inner ring is wrapped by multiple layers of strip steel, with a very short heat dissipation path and a surface temperature exceeding 600℃. In this high-temperature environment, the thermal lensing effect causes the focal point of the laser engraving components to drift or even burst, resulting in inconsistent and fluctuating ablation depths and significantly reduced label quality. This makes it impossible to apply the same laser engraving technology to the inner ring of the steel coil, creating a gap in the industry. Utility Model Content

[0003] The purpose of this invention is to provide a labeling device for the inner ring of a high-temperature steel coil.

[0004] The technical solution to achieve the purpose of this utility model is: a labeling device for the inner ring of a high-temperature steel coil, comprising a robotic arm, a laser engraving device, a water chiller, and an air cooling device. The laser engraving device is fixedly installed on the free end of the robotic arm. The laser engraving device has an outer casing, and a laser lens is disposed inside the outer casing. A laser lens window is provided on the bottom surface of the outer casing. A water cooling box is disposed outside the laser engraving device. A laser clearance hole is provided on the bottom surface of the water cooling box. The laser lens, the laser lens window, and the laser clearance hole... The positioning holes are arranged sequentially from the inside to the outside, and the three are positioned opposite each other with the same center line. The gap between the water-cooled box and the laser marking device forms a closed water-cooled chamber. The water-cooled chamber has a water inlet and a water outlet. The water inlet of the water-cooled chamber is connected to the water chiller through an inlet pipe, and the water outlet of the water-cooled chamber is connected to the water chiller through an outlet pipe. The air-cooling device is located outside the laser marking device. The air-cooling device is connected to a cold air duct, which extends into the outer box and is close to the laser lens.

[0005] Furthermore, a movable baffle is installed on the laser lens window. This movable baffle is connected to a driving mechanism, which drives the opening and closing of the laser lens window. Through the movable baffle and the driving mechanism, the laser lens window can be flexibly opened or closed to adapt to different working states. In the non-working state, the driving mechanism drives the movable baffle to block the laser lens window, keeping it closed. During operation, the driving mechanism drives the movable baffle away from the laser lens window, keeping it open. This design ensures that the laser lens window can be closed in non-working states, except during normal laser printing operation, protecting the laser lens from accidental physical damage, high-temperature damage, and dust contamination.

[0006] Furthermore, the water-cooled box includes two right-angled halves. Each right-angled half has a right-angled side extending inwards along a vertical edge, and the two straight sides along its length extend inwards along a sloping edge. The two right-angled halves are fixed together to form a square-column-shaped water-cooled box. The laser clearance hole is located on one of the right-angled halves at a corresponding position. Each of the two right-angled halves and the outer casing forms a closed water-cooling chamber. The two water-cooling chambers are connected by a central water pipe, forming the water-cooling cavity. The water-cooled box can be a single-piece tubular structure or it can be formed by two right-angled halves. Compared to a single-piece tube structure, the structure formed by two right-angled halves is easier to install. Furthermore, with this structure, the right-angled halves embrace the outer casing from the outside. The vertical and inclined edges on the right-angled halves do not affect their installation; these edges can be integrally formed with the halves. No subsequent fixing connections are needed between the vertical edges and the right-angled halves, or between the inclined edges and the right-angled halves, resulting in better structural stability. Additionally, with the inclined edges, each of the two right-angled halves and the outer casing can form a closed water-cooling chamber. Water inside the water-cooling chamber will not overflow from the junction of the two right-angled halves, resulting in better sealing. Moreover, with the two water-cooling chambers connected by a central water pipe, the water-cooling path within the chamber is longer, leading to a higher heat exchange rate and better cooling effect.

[0007] Furthermore, several unidirectional right-angled partitions are installed on the right-angled inner surface of the right-angled half-body. These partitions are spaced apart along the length of the right-angled half-body. Each partition has one end fixed to the inclined edge and the other end free. Adjacent partitions are fixed to different inclined edges. After the two right-angled half-bodies are installed on the outer casing, the right-angled partitions fit snugly against the outer surface of the outer casing. The partitions divide the corresponding water-cooling chambers into winding channels, significantly extending the water-cooling path and improving the heat exchange rate. Moreover, the right-angled half-body has higher structural strength after the partitions are installed, making it less prone to expansion and bulging due to high water pressure. Expansion and bulging of the right-angled half-body would compress and tighten around the outer casing, hindering disassembly of the outer casing and maintenance of the laser lens.

[0008] Furthermore, the two right-angled halves are locked together by bolts. This arrangement facilitates easy assembly and disassembly.

[0009] Furthermore, a blower head is installed at the end of the cold air duct.

[0010] Furthermore, both the inlet pipe and the outlet pipe are strapped to the robotic arm. This design prevents the inlet and outlet pipes from being pulled and broken during the operation of the robotic arm.

[0011] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. On one hand, by installing a water-cooling box outside the outer casing of the laser marking device, a water-cooling chamber is formed between the water-cooling box and the laser marking device. Cooling water is then sent into the water-cooling chamber using a water chiller to water-cool the entire outer casing of the laser marking device. On the other hand, by installing an air-cooling device and extending the cold air pipe connected to the air-cooling device into the outer casing and close to the laser lens, the air-cooling device generates heat dissipation air to air-cool the laser lens. This utility model relates to a high-temperature steel coil inner ring labeling device. In addition to overall cooling of the outer casing of the laser engraving device, it also provides targeted localized cooling of the laser lens, which is severely affected by high temperatures. This combination of overall and targeted localized cooling significantly reduces the temperature of the laser engraving device and the laser lens within the outer casing, achieving efficient heat dissipation. This reduces the impact of the high temperature of the inner ring of the steel coil on the laser engraving device and the laser lens within the outer casing, preventing the laser lens within the laser engraving device from drifting or even cracking due to high-temperature focusing. This allows the laser engraving device to operate normally within the inner ring of the steel coil, performing laser engraving on the inner ring and enabling labeling.

[0012] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. Compared to air cooling, it uses a water-cooled box encased outside the outer casing. When using water cooling to dissipate heat from the outer casing, the cooling water directly contacts the outer casing, carrying away its heat. This results in higher cooling efficiency. Furthermore, the water-cooled box, being encased outside the outer casing, provides a larger cooling surface area, ensuring effective and more uniform cooling for all parts of the outer casing. After this encapsulated cooling system, the outer casing already exhibits good heat dissipation. In this context, further air cooling is used to locally cool the laser lens, further improving heat dissipation for components susceptible to high temperatures and significantly reducing the impact of the high temperature of the inner ring of the steel coil on the laser marking device. The installation conditions inside the outer casing are limited. When the laser lens is cooled by air cooling inside the outer casing, the structural design is more convenient. Moreover, air cooling can also create positive pressure inside the outer casing. The laminar air curtain formed in the laser lens window and the laser clearance hole can block the splashing of oxide scale during operation, protecting the outer casing from damage caused by the splashing of oxide scale during operation.

[0013] This utility model's labeling device for the inner ring of high-temperature steel coils also includes a robotic arm. The water-cooling box is fixedly installed on the end of the robotic arm, allowing the laser engraving on the inner ring of the steel coil to be moved and operated. This avoids close-range manual work on the inner ring of the high-temperature steel coil, greatly reducing the risk of high-temperature operations.

[0014] This utility model relates to a high-temperature steel coil inner ring labeling device. The robotic arm, the water-cooled box, and the air-cooling device are combined to enable the laser marking device to implement constant temperature control, avoid the thermal lens effect that causes focus drift, and truly realize the "high-temperature usable, automatic operation" steel coil inner ring laser labeling function. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the label device on the inner ring of the high-temperature steel coil of this utility model; Figure 2 This is a cross-sectional structural diagram of the laser engraving device, air-cooling device, and water-cooling box of the label device on the inner ring of the high-temperature steel coil in the working state of this utility model. Figure 3 This utility model relates to a laser engraving device for a labeling device on the inner ring of a high-temperature steel coil and a water-cooled box. Figure 2 Schematic diagram of the cross-sectional structure along line AA; Figure 4 This utility model relates to a laser engraving device for a labeling device on the inner ring of a high-temperature steel coil and a water-cooled box. Figure 2 Schematic diagram of the cross-sectional structure of the middle BB line; Figure 5 This utility model relates to a laser engraving device for a labeling device on the inner ring of a high-temperature steel coil and a water-cooled box. Figure 2 Schematic diagram of the cross-sectional structure of the middle CC line; Figure 6 This is a three-dimensional structural diagram of the right-angled half of the water-cooled box for the label device on the inner ring of the high-temperature steel coil of this utility model; Figure 7 This is a schematic diagram of the structure of the water-cooled box of the label device on the inner ring of the high-temperature steel coil after the two right-angled halves are unfolded into a plane. The arrows in the figure indicate the water flow path. Figure 8 This is a cross-sectional structural diagram of the laser engraving device, air-cooling device, and water-cooling box of the labeling device on the inner ring of the high-temperature steel coil in the non-working state of this utility model. Detailed Implementation

[0016] The preferred embodiment of the labeling device on the inner ring of the high-temperature steel coil of this utility model will be described in detail below with reference to the accompanying drawings: like Figures 1 to 8 As shown, a labeling device for the inner ring of a high-temperature steel coil includes a robotic arm 1, a laser engraving device 2, a water chiller 3, and an air cooling device 4. The laser engraving device 2 is fixedly mounted on the free end of the robotic arm 1. The laser engraving device 2 has an outer casing 20, inside which a laser lens 21 is disposed. The bottom surface of the outer casing 20 has a laser lens window 22. The laser engraving device 2 is fitted with a water cooling box 5. The bottom surface of the water cooling box 5 has a laser clearance hole 50. The laser lens 21, the laser lens window 22, and the laser clearance hole 50 are arranged sequentially from the inside to the outside. The optical lens window 22 and the laser clearance hole 50 are arranged opposite each other and have the same center line. The gap between the water-cooled box 5 and the laser marking device 2 forms a closed water-cooled chamber 6. The water-cooled chamber 6 has a water inlet 61 and a water outlet 62. The water inlet 61 of the water-cooled chamber 6 is connected to the water chiller 3 through a water inlet pipe 71. The water outlet 62 of the water-cooled chamber 6 is connected to the water chiller 3 through a water outlet pipe 72. The air-cooling device 4 is located outside the laser marking device 2. The air-cooling device 4 is connected to a cold air pipe 41. The cold air pipe 41 extends into the outer casing 20 and is close to the laser lens 21.

[0017] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. The robotic arm 1 is used for movement at any position. The laser lens 21 inside the outer casing 20 of the laser engraving device 2 serves as a focusing component for laser engraving. The laser lens window 22 provides clearance for the laser path, allowing the laser to exit. The water-cooled box 5 is used to cool the outer casing 20 of the laser engraving device 2. The laser engraving device 2 is fixedly mounted on the free end of the robotic arm 1. The water-cooled box 5 and its inner casing 20 can be moved by the robotic arm 1. The laser clearance hole 50 on the bottom surface of the water-cooled box 5 provides clearance for the laser path, allowing the laser to exit. The water-cooled chamber 6 provides a cavity for cooling water. The water chiller 3 provides cooling water. The air-cooling device 4 generates cooling air.

[0018] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. During operation, the robotic arm 1 moves, causing the laser engraving device 2 to extend into the inner ring of the steel coil. The laser engraving device 2 is activated, and the laser light passes through the laser lens 21, exiting through the laser lens window 22 and the laser clearance hole 50, and striking the inner ring of the steel coil to apply a label. After labeling, the robotic arm 1 drives the laser engraving device 2 to retract from the inner ring of the steel coil.

[0019] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. During operation, the water chiller 3 is activated, cooling water. The cooled water is then fed into the water-cooling chamber 6 through the inlet pipe 71 and the inlet 61, cooling the entire outer casing 20 of the laser marking device 2. The cooled water in the water-cooling chamber 6 is then returned to the water chiller 3 through the outlet pipe 72 and the outlet 62. This cycle continues, water-cooling the entire casing of the laser marking device 2. Simultaneously, the air-cooling device 4 is activated, generating cooling air. This cooling air is sent into the outer casing 20 through the cold air pipe 41, air-cooling the nearby laser lens 21.

[0020] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. On one hand, by installing a water-cooled box 5 over the outer casing 20 of the laser marking device 2, a water-cooled chamber 6 is formed between the water-cooled box 5 and the laser marking device 2. Then, the water chiller 3 sends cooling water into the water-cooled chamber 6 to water-cool the entire outer casing 20 of the laser marking device 2. On the other hand, by setting up an air-cooling device 4 and extending the cold air pipe 41 connected to the air-cooling device 4 into the outer casing 20 and close to the laser lens 21, the air-cooling device 4 generates heat dissipation air to air-cool the laser lens 21. This utility model relates to a high-temperature steel coil inner ring labeling device. In addition to overall cooling of the outer casing 20 of the laser engraving device 2, it also provides targeted local cooling of the laser lens 21, which is severely affected by high temperatures. This combination of overall and targeted local cooling significantly reduces the temperature of the laser engraving device 2 and the laser lens 21 within the outer casing 20, achieving efficient heat dissipation. This reduces the impact of the high temperature of the inner ring of the steel coil on the laser engraving device 2 and the laser lens 21 within the outer casing 20, preventing the laser lens 21 from drifting or even cracking due to high-temperature focus. This allows the laser engraving device 2 to operate normally within the inner ring of the steel coil, performing laser engraving on the inner ring and enabling labeling.

[0021] This utility model relates to a labeling device for the inner ring of a high-temperature steel coil. Compared to air cooling, this device uses a water-cooled box 5 encased outside the outer casing 20. When using water cooling to dissipate heat from the outer casing 20, the cooling water directly contacts the outer casing 20, carrying away its heat and resulting in higher cooling efficiency. Furthermore, the water-cooled box 5, being encased outside the outer casing 20, provides a large cooling surface area, ensuring effective and uniform cooling of all parts of the outer casing 20. After this encapsulated cooling of the outer casing 20, the interior of the outer casing 20 already has good heat dissipation. Under these conditions, further air cooling is used to locally cool the laser lens 21, further improving heat dissipation for components susceptible to high temperatures and significantly reducing the impact of the high temperature of the inner ring of the steel coil on the laser marking device 2. With limited installation conditions inside the outer casing 20, the structure is more convenient when air cooling is used inside the outer casing 20 to cool the laser lens 21. Furthermore, air cooling can create positive pressure inside the outer casing 20, and the laminar air curtain formed inside the laser lens window 22 and the laser clearance hole 50 can block the splashing of oxide scale during operation, protecting the outer casing 20 from damage caused by the splashing of oxide scale during operation.

[0022] The labeling device for the inner ring of the high-temperature steel coil of this utility model also includes a robotic arm 1, on which the water-cooled box 5 is fixedly installed. The robotic arm 1 moves to operate the laser engraving on the inner ring of the steel coil, avoiding close-range manual operation on the inner ring of the high-temperature steel coil and greatly reducing the risk of high-temperature operation.

[0023] This utility model relates to a high-temperature steel coil inner ring labeling device. The robotic arm 1, the water-cooled box 5, and the air-cooling device 4 are combined to enable the laser marking device 2 to implement constant temperature control, avoid the thermal lens effect that causes focus drift, and truly realize the "high-temperature usable, automatic operation" steel coil inner ring laser labeling function.

[0024] In this invention, a labeling device for the inner ring of a high-temperature steel coil is preferably provided. A movable baffle 220 is installed on the laser lens window 22. The movable baffle 220 is connected to a driving mechanism 221, which drives the opening and closing of the laser lens window 22. Through the movable baffle 220 and the driving mechanism 221, the laser lens window 22 can be flexibly opened or closed by switching the movable baffle 220 on and off, adapting to different working states. In the non-working state, the driving mechanism 221 drives the movable baffle 220, causing it to block the laser lens window 22, thus closing the window. Figure 8 As shown; during operation, the drive mechanism 221 drives the movable baffle 220, causing the movable baffle 220 to move away from the laser lens window 22, thus opening the laser lens window 22. Figure 2 As shown. This configuration allows the laser lens window 22 to be closed during non-operational periods, except when the laser printing is in normal operation, protecting the laser lens 21 from accidental physical damage, high-temperature damage, and dust contamination. The drive mechanism 221 can be a cylinder or a motor.

[0025] The labeling device on the inner ring of the high-temperature steel coil of this utility model preferably includes a water-cooled box 5 comprising two right-angled halves 51. Each right-angled half 51 has a right-angled side extending inwards with a vertical edge 52 at its end, and two straight sides extending inwards with inclined edges 53 along their length. The two right-angled halves 51 are fixedly enclosed to form a square column-shaped water-cooled box 5. The laser clearance hole 50 is located on one of the right-angled halves 51 at a corresponding position. Each of the two right-angled halves 51 and the outer box 20 forms a closed water-cooled chamber 510. The two water-cooled chambers 510 are connected by a central water pipe 54, forming the water-cooled cavity 6. The water-cooled box 5 can be a single-piece tube structure or can be formed by two right-angled halves 51 enclosed together. Compared to a single-piece tube structure, the structure formed by two right-angled halves 51 is easier to install. Furthermore, in this structure, the right-angled halves 51 hug the outer casing 20 from the outside. The vertical edge 52 and the inclined edge 53 on the right-angled halves 51 do not affect their installation. The vertical edge 52 and the inclined edge 53 can be integrally formed with the right-angled halves 51. This eliminates the need for subsequent fixing connections between the vertical edge 52 and the right-angled halves 51, and between the inclined edge 53 and the right-angled halves 51, while also improving structural stability. In addition, after the inclined edge 53 is set, each of the two right-angled halves 51 and the outer casing 20 can form a closed water-cooled chamber 510. The water in the water-cooled box 5 will not overflow from the joint of the two right-angled halves 51, and the sealing effect of the water-cooled chamber 6 is better. Moreover, after the two water-cooled chambers 510 are connected by the middle water pipe 54, the water-cooling path in the water-cooled chamber 6 is longer, the heat exchange rate is higher, and the cooling effect is better.

[0026] In this utility model, a labeling device for the inner ring of a high-temperature steel coil is preferably provided, wherein a plurality of right-angled partitions 55 in the same direction are installed on the right-angled inner surface of the right-angled half 51. The right-angled partitions 55 are arranged at intervals along the length direction of the right-angled half 51. One end of each right-angled partition 55 is connected and fixed to the inclined edge 53, and the other end is a free end. Adjacent right-angled partitions 55 are connected and fixed to different inclined edges 53. After the two right-angled halves 51 are installed on the outer casing 20, the right-angled partition 55 is attached to the outer surface of the outer casing 20. The right-angled partition 55 divides the corresponding water-cooling chambers 510 to form a bypass channel, which greatly extends the water-cooling path and improves the heat exchange rate. Moreover, after the right-angled partition 55 is set, the structural strength of the right-angled halves 51 is higher. The right-angled halves 51 are not easy to expand or bulge due to high water pressure. The expanded or bulging right-angled halves 51 squeeze and hug the outer casing 20 more tightly, which is not conducive to the disassembly of the outer casing 20 and the maintenance of the laser lens 21.

[0027] In this utility model, the labeling device on the inner ring of a high-temperature steel coil is preferably secured between the two right-angled halves 51 by bolts 511. This design allows for easy assembly and disassembly.

[0028] In this invention, a labeling device for the inner ring of a high-temperature steel coil is preferably provided with a blower head 42 installed at the end of the cold air duct 41.

[0029] In this invention, the labeling device on the inner ring of a high-temperature steel coil preferably has both the inlet pipe 71 and the outlet pipe 72 bound to the robotic arm 1. This arrangement prevents the inlet pipe 71 and the outlet pipe 72 from being pulled and broken during the operation of the robotic arm 1.

[0030] The labeling device for the inner ring of the high-temperature steel coil of this utility model preferably has a hollow structure in which the robotic arm 1 can be conveniently installed with pipes, cables, etc.

[0031] The labeling device for the inner ring of high-temperature steel coils of this utility model includes existing structures such as the robotic arm 1, the laser engraving device 2, the water chiller 3, and the air cooling device 4. Therefore, this utility model will not elaborate further on these components.

[0032] For those skilled in the art to which this utility model pertains, several simple deductions or substitutions can be made without departing from the concept of this utility model, and all such deductions or substitutions should be considered to fall within the protection scope of this utility model.

Claims

1. A labeling device for the inner ring of a high-temperature steel coil, characterized in that: The system includes a robotic arm, a laser marking device, a water chiller, and an air cooling device. The laser marking device is fixedly mounted on the free end of the robotic arm. The laser marking device has an outer casing, inside which a laser lens is housed. The bottom surface of the outer casing has a laser lens window. A water cooling box surrounds the laser marking device, and the bottom surface of the water cooling box has a laser clearance hole. The laser lens, the laser lens window, and the laser clearance hole are arranged sequentially from the inside out. The three components—the water-cooled box, the laser marking device, and the laser clearance hole—are positioned opposite each other and share the same center line. The gap between the water-cooled box and the laser marking device forms a closed water-cooled chamber. The water-cooled chamber has an inlet and an outlet. The inlet of the water-cooled chamber is connected to the water chiller via an inlet pipe, and the outlet of the water-cooled chamber is connected to the water chiller via an outlet pipe. The air-cooling device is located outside the laser marking device and is connected to a cold air duct. The cold air duct extends into the outer casing and is close to the laser lens.

2. The labeling device on the inner ring of a high-temperature steel coil according to claim 1, characterized in that: A movable baffle is installed on the laser lens window. The movable baffle is connected to a driving mechanism and is driven by the driving mechanism to open and close the laser lens window.

3. The labeling device on the inner ring of a high-temperature steel coil according to claim 1, characterized in that: The water-cooled box includes two right-angled halves. The right-angled side at the end of each right-angled half extends vertically inward to the inside of the right angle. The two straight sides along the length of the right-angled half extend obliquely inward to the inside of the right angle. The two right-angled halves are enclosed and fixed to form a square column-shaped water-cooled box. The laser clearance hole is located on one of the right-angled halves at the corresponding position. Each of the two right-angled halves and the outer box body forms a closed water-cooled chamber. The two water-cooled chambers are connected by a middle water pipe to form the water-cooled cavity.

4. The labeling device on the inner ring of a high-temperature steel coil according to claim 3, characterized in that: Several right-angled partitions in the same direction are installed on the right-angled inner surface of the right-angled half. The right-angled partitions are arranged at intervals along the length direction of the right-angled half. One end of each right-angled partition is fixedly connected to the inclined edge, and the other end is a free end. Adjacent right-angled partitions are fixedly connected to different inclined edges.

5. The labeling device on the inner ring of a high-temperature steel coil according to claim 3, characterized in that: The two right-angled halves are locked together by bolts.

6. The labeling device on the inner ring of a high-temperature steel coil according to claim 1, characterized in that: The end of the cold air duct is equipped with a blower.

7. The labeling device on the inner ring of a high-temperature steel coil according to claim 1, characterized in that: Both the inlet pipe and the outlet pipe are attached to the robotic arm.

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