Annealing device for tinplate processing

Abstract

The utility model discloses a tinplate processing's annealing device belongs to metal material heat treatment technical field, including annealing furnace, telescopic push rod, sliding rod and shell, and the lower extreme of sliding rod is rotatably connected with the support ring through the pivot in shell, and the inside of shell is equipped with clamping mechanism, and clamping mechanism includes the cross bar of the inside wall of shell, the operating rod of rotatory connection on cross bar, the clamping piece of sliding connection on operating rod and the drive groove of opening in the inside wall of shell, still includes the circulation mechanism of communication with the inside wall of annealing furnace, and circulation mechanism includes annular air duct, support block, supply tank, conveying pipe and external connection pipe. The utility model has realized the automation of the steel coil from the furnace taking out, has avoided the safety risk of manual operation, has improved production continuity, and through setting circulation mechanism, has forcedly guided the uniform circulation of protective atmosphere in the furnace, has solved the problem of uneven heating, has guaranteed annealing quality, has promoted the consistency of product performance.

Description

Technical Field

[0001] This utility model relates to the field of heat treatment technology for metallic materials, and in particular to an annealing apparatus for tinplate processing. Background Technology

[0002] Tinplate, or electroplated tin sheet, is a packaging material with excellent deep-drawing properties, strength, and corrosion resistance. These properties largely depend on the quality of the annealing process, which is a key heat treatment step to eliminate cold-rolling hardening and obtain the desired microstructure and properties. It is usually carried out in a bell-type annealing furnace filled with a protective atmosphere.

[0003] In the traditional annealing process, after the steel coil has completed the heating and holding stage, it needs to be removed from the annealing furnace at a temperature of several hundred degrees Celsius for the subsequent cooling process. Currently, this operation still relies heavily on manual labor or simple overhead cranes on many production lines. Operators need to approach the high-temperature furnace opening and manually use hooks or clamps. This not only exposes workers directly to high-temperature radiation and potential mechanical injury risks, resulting in extremely high labor intensity, but also takes a long time and requires interrupting the continuous operation of the production line, leading to low overall production efficiency.

[0004] In addition, to prevent high-temperature oxidation, the annealing process needs to be carried out in a protective atmosphere. However, ensuring that the atmosphere and temperature are evenly distributed in the huge furnace space, especially between the layers of stacked steel coils, is another problem that determines the quality of annealing. In large bell-type annealing furnaces, the heated gas will naturally flow upward due to the decrease in density, causing heat and protective atmosphere to tend to accumulate at the top of the furnace and the upper part of the steel coil, while the temperature at the bottom of the furnace and the inner side of the steel coil is relatively low, and the gas exchange is not sufficient. This non-uniformity directly leads to insufficient annealing or over-annealing of different parts of the same batch or even the same steel coil, ultimately causing fluctuations in the mechanical properties of tinplate and affecting the product qualification rate.

[0005] Therefore, this utility model proposes an annealing device for tinplate processing to solve the problems of low automation, high safety risks, and uneven heating in the furnace affecting product quality in the existing technology. Utility Model Content

[0006] In view of the problems existing in the annealing equipment for tinplate processing, such as low automation, high operational safety risks due to workers having to manually pick up and put down steel coils from the high-temperature furnace, and uneven distribution of heat and protective atmosphere in the furnace seriously affecting the annealing quality of the product, this utility model aims to provide an annealing equipment for tinplate processing with an improved structure that can effectively solve the above problems.

[0007] This utility model provides an annealing device for tinplate processing, including: an annealing furnace and a support plate disposed on one side of the annealing furnace, the inner wall of the support plate having a sliding groove; as well as a telescopic push rod, a sliding rod, a housing, and a clamping mechanism disposed within the housing.

[0008] The clamping mechanism includes a crossbar pivotally connected to the inner wall of the housing, an operating rod rotatably connected to the crossbar, a clamping element slidably connected to the outer wall of the operating rod, and a drive groove formed in the inner wall of the housing.

[0009] Furthermore, the body of the telescopic push rod is fixedly connected to the inner wall of the support plate, the outer wall of the sliding rod is slidably connected to the sliding groove, and the output end of the sliding rod is fixedly connected to the telescopic push rod. The outer shell is rotatably connected to the lower end of the sliding rod through a rotating shaft and a support ring. The drive groove is used to guide and position the sliding of the clamping component. Through the cooperation of the drive groove and the clamping component, efficient and stable clamping of the steel coil is achieved.

[0010] Preferably, the annealing device for tinplate processing also includes a fixing rod, which is slidably connected to the inner wall of the support plate. One end of the fixing rod can be selectively inserted into the outer shell. This structure locks the outer shell, thereby increasing the stability of the operation and ensuring the accuracy of the clamping process.

[0011] Preferably, the clamping member and the inner wall of the housing form a wedge-shaped sliding structure through the guiding engagement of the drive groove. This structural design allows the clamping member to generate a huge radial tightening force while sliding along its axis under the drive of the operating lever, thereby accommodating steel coils of different sizes and providing reliable clamping force.

[0012] Preferably, the annealing device for tinplate processing also includes a circulation mechanism, which includes an annular air guide pipe connected to the inner wall of the annealing furnace. The annular air guide pipe can blow the protective atmosphere evenly onto the steel coil to form forced convection, thereby effectively improving the temperature field and atmosphere field distribution inside the furnace.

[0013] Preferably, the circulation mechanism further includes multiple support blocks fixedly connected to the bottom of the annealing furnace, with a gas storage tank and a supply tank fixedly connected to the top of the support blocks, providing a stable installation foundation and gas source storage for the entire circulation.

[0014] Preferably, the inner wall of the gas storage tank is connected to the inner wall of the annealing furnace through a delivery pipe. This structure is specifically designed to initially supply gas into the annealing furnace and quickly establish the initial protective atmosphere environment.

[0015] Preferably, the inner wall of the supply tank is connected to an annular air guide pipe, and it is also connected to an external air source through an external pipe. The inner wall of the external pipe is also equipped with a valve. The combined structure realizes the continuous replenishment and control of the protective atmosphere.

[0016] Preferably, the outer surface of the annular air duct is equipped with a switch valve. By adjusting the switch valve, the gas circulation rate entering the annealing furnace can be controlled to adapt to the needs of different annealing processes and achieve refined process management.

[0017] This utility model has the following beneficial effects: 1. This utility model solves the problem in the prior art that requires manual handling of steel coils in high-temperature annealing furnaces, which leads to the risk of workers being burned by high temperatures and mechanical injuries, and affects the continuity of production, by setting up an automated handling mechanism consisting of a telescopic push rod, a sliding rod, a rotating shaft, and a clamping mechanism including a housing and clamping parts. It achieves the goals of improving the level of production automation, ensuring the safety of operators, and increasing production efficiency.

[0018] 2. This utility model solves the problem in the prior art of uneven heating of the steel coil caused by excessively high temperature and atmosphere concentration at the top of the furnace due to natural convection by setting an annular air guide pipe connected to the circulation mechanism in the annealing furnace, thereby forcibly guiding the protective atmosphere to form a uniform circulation convection in the furnace. This achieves the goal of ensuring uniform and stable annealing quality of the steel coil and improving the consistency of the final tinplate product performance. Attached Figure Description

[0019] Figure 1 This is a front perspective view of the annealing device for tinplate processing proposed in this utility model. Figure 2 This is a partial structural diagram of the annealing device for tinplate processing proposed in this utility model. Figure 3 This is a partial structural schematic diagram of the annealing device for tinplate processing proposed in this utility model. Figure 4 This is a cross-sectional view of the outer casing of the annealing device for tinplate processing proposed in this utility model. Figure 5 This is a partial structural schematic diagram of the annealing device for tinplate processing proposed in this utility model.

[0020] Legend: 1. Support plate; 2. Circulation mechanism; 201. Annealing furnace; 202. Support block; 203. Gas storage tank; 204. Conveying pipe; 205. Supply tank; 206. External pipe; 207. Valve; 208. Annular air guide pipe; 209. Switch valve; 3. Slide groove; 4. Telescopic push rod; 5. Sliding rod; 6. Rotating shaft; 7. Support ring; 8. Housing; 9. Crossbar; 10. Operating lever; 11. Clamping element; 12. Drive groove; 13. Fixing rod. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.

[0022] Example: Please refer to Figures 1 to 5 This utility model provides an annealing device for tinplate processing, which aims to solve the problems of low automation of existing annealing devices leading to high operational risks, and uneven heat distribution in the furnace affecting product quality.

[0023] Please refer to Figure 1 , Figure 2 and Figure 4 As shown, the annealing device for tinplate processing includes an annealing furnace 201, an automatic pick-and-place mechanism and a set of circulation mechanism 2 set on one side of the annealing furnace 201. The basic frame of the automatic pick-and-place mechanism is a support plate 1. A groove 3 is opened on the inner wall of the support plate 1. The body of the telescopic push rod 4 is fixedly connected to the inner wall of the support plate 1. The output end of the telescopic push rod 4 is fixedly connected to a sliding rod 5. The outer wall of the sliding rod 5 is slidably connected to the groove 3. By activating the telescopic push rod 4, the sliding rod 5 can be driven to make a stable reciprocating linear motion along the groove 3. At the lower end of the sliding rod 5; A housing 8 for accommodating the steel coil is rotatably connected to a pivot 6 and a support ring 7. This structure allows the housing 8 to both translate with the sliding rod 5 and rotate around the center line of the pivot 6. To clamp and release the steel coil, a clamping mechanism is installed inside the housing 8. A crossbar 9 is pivotally connected to the inner wall of the housing 8, and an operating rod 10 is rotatably connected to the crossbar 9. The clamping element 11 is slidably connected to the outer wall of the operating rod 10. Simultaneously, a drive groove 12 is provided on the inner wall of the housing 8. The drive groove 12 guides and positions the sliding of the clamping element 11. When the operating rod 10 is rotated... At time 0, the clamping member 11 moves under the drive of the operating lever 10 and is constrained by the drive groove 12. The clamping member 11 and the inner wall of the outer shell 8 form a wedge-shaped slip structure through the guide cooperation of the drive groove 12, thereby causing the clamping member 11 to tighten radially to firmly clamp or release the steel coil. In addition, the device also includes a fixing rod 13, which is slidably connected to the inner wall of the support plate 1. One end can be selectively inserted into the outer shell 8 to lock the position of the outer shell 8 when docking or picking up and putting down the steel coil, so as to increase the stability of the operation and prevent it from shaking or shifting.

[0024] Please refer to Figure 2 , Figure 3 and Figure 5The circulation mechanism 2 includes an annular air guide pipe 208, which is installed on the inner wall of the annealing furnace 201 and serves as a gas distribution channel to uniformly guide the protective atmosphere to the steel coil to be processed in the furnace. In order to realize the gas supply and circulation, the circulation mechanism 2 also includes multiple support blocks 202 fixedly connected to the bottom of the annealing furnace 201. The support blocks 202 are fixedly connected to the top of the gas storage tank 203 and the supply tank 205. The inner wall of the gas storage tank 203 is connected to the inner wall of the annealing furnace 201 through the delivery pipe 204 for initially supplying gas into the annealing furnace 201. The inner wall of the supply tank 205 is connected to the annular air guide pipe 208.

[0025] Please refer to Figure 3 and Figure 4 Meanwhile, the supply tank 205 is also connected to an external gas source through an external pipe 206 to replenish gas in the annealing device. A valve 207 is installed on the inner wall of the external pipe 206 to control the amount of external gas replenishment. A switch valve 209 is also installed on the outer surface of the annular air guide pipe 208 to regulate the gas flow rate entering the annealing furnace 201 through the annular air guide pipe 208. This structure, which combines the gas storage tank 203, the supply tank 205 and the annular air guide pipe 208, ensures that the protective atmosphere in the annealing furnace 201 can be forcibly and evenly guided to various areas of the steel coil to form a stable circulating airflow, thereby solving the problem of uneven heating caused by the accumulation of heat and gas at the top.

[0026] Please refer to Figure 1 and Figure 4 The device also includes a fixing rod 13, which is slidably connected to the inner wall of the support plate 1. The structural shape of one end of the fixing rod 13 is adapted to the mating groove of the outer wall of the outer shell 8. Before or during the clamping and docking of the steel coil, the fixing rod 13 can be driven and inserted into the outer shell 8. In this way, the outer shell 8 is rigidly locked, effectively preventing the outer shell 8 from shaking or shifting due to uneven force or inertia.

[0027] Please refer to Figure 3 and Figure 4 The drive groove 12 on the inner wall of the outer shell 8 is a wedge-shaped groove. The outer contour of the clamping member 11 matches the drive groove 12. When the operating lever 10 drives the clamping member 11 to slide along its axial direction, the clamping member 11 will move along the trajectory of the drive groove 12 at the same time. The clamping member 11 and the inner wall of the outer shell 8 form a wedge-shaped sliding structure through the guiding cooperation of the drive groove 12. This structure can efficiently convert the small rotational torque or axial thrust applied by the operating lever 10 into a huge radial clamping force of the clamping member 11, thereby achieving a firm clamping of steel coils of different sizes.

[0028] Please refer to Figure 2 and Figure 5The valve 207 installed on the external pipe 206 is preferably an electrically controlled proportional valve, which can adjust the gas flow rate from the external gas source to the supply tank 205 according to the control signal. At the same time, the switch valve 209 installed on the annular air guide pipe 208 is also preferably an electrically controlled regulating valve, which can control the gas circulation rate entering the annealing furnace 201. The two work together to realize the automation of the atmosphere concentration and circulation intensity in the furnace.

[0029] Working principle: During use, since the sliding groove 3 on the inner wall of the support plate 1 is fixedly connected to the telescopic push rod 4, and the output end of the telescopic push rod 4 is fixed to the sliding rod 5, and the outer wall of the sliding rod 5 is slidably connected to the sliding groove 3, starting the telescopic push rod 4 can drive the sliding rod 5 to move stably along the sliding groove 3, providing a power basis for feeding materials. Since the bottom end of the sliding rod 5 is connected to the support ring 7 through the rotating shaft 6, the inner wall of the support ring 7 is fixed to the outer shell 8, and the outer wall of the operating rod 10, which is rotatably connected to the crossbar 9 inside the outer shell 8, slides a clamping part 11. Therefore, rotating the operating rod 10 can drive the clamping part 11 to slide along the inner wall of the outer shell 8, and continuously tighten due to the characteristics of the wedge-shaped slope, cooperating with the drive groove 12. The positioning can firmly clamp the steel coil to be annealed. At this time, the telescopic push rod 4 drives the sliding rod 5 to move, which can drive the steel coil clamped by the clamping part 11 to be automatically taken out from the annealing furnace 201. The outer shell 8 can be rotated by the rotating shaft 6 to place the heated steel coil on the base behind, without the need for manual handling. At the same time, the fixed rod 13 sliding on the outer wall of the outer shell 8 slides along the inner wall of the support plate 1 and can be inserted into the outer shell 8 to prevent it from shifting in the future, enhancing the stability when clamping the steel coil, avoiding the safety risk of manual contact with the high temperature area, and eliminating the need to stop the machine for manual operation, effectively improving the continuity of production and meeting the automation requirements of the annealing process. When using the circulation mechanism 2, since multiple support blocks 202 are fixedly connected to the bottom of the annealing furnace 201, and the top of the support blocks 202 simultaneously fixes the gas storage tank 203 and the supply tank 205, the support blocks 202 can stably support the two tanks and ensure their relative positions with the annealing furnace 201 are fixed, laying the foundation for airflow circulation. Because the inner wall of the gas storage tank 203 is connected to the conveying pipe 204, and the other end of the conveying pipe 204 is connected to the inner wall of the annealing furnace 201, the hydrogen in the gas storage tank 203 can be initially sent into the annealing furnace 201 through the conveying pipe 204. At the same time, the inner wall of the supply tank 205 is connected to the outer pipe 206 and the annular air guide pipe 208. The valve 207 on the inner wall of 206 can control the amount of external hydrogen supply, and the switch valve 209 on the outer surface of the annular air guide duct 208 can adjust the airflow delivery rate. The annular air guide duct 208 is connected to the inner wall of the annealing furnace 201. Therefore, the supply tank 205 can evenly supply air to the annealing furnace 201 through the annular air guide duct 208. After the hydrogen is sent in through the annular air guide duct 208, it will be guided by the annular air guide duct 208 to the area around each layer of tinplate coil, forming a stable circulating airflow. This avoids the problem of heat and hydrogen accumulating at the top in traditional equipment, thereby ensuring uniform heating of the inner and outer sides of the coil and improving the consistency of the tinplate material properties after annealing.

Claims

1. An annealing apparatus for tinplate processing, comprising an annealing furnace (201), wherein a support plate (1) is connected to one side of the annealing furnace (201), and a groove (3) is provided on the inner wall of the support plate (1). Its features are, The device further includes: a telescopic push rod (4), a sliding rod (5), and a housing (8). The outer surface of the telescopic push rod (4) is fixedly connected to the inner wall of the support plate (1). The outer wall of the sliding rod (5) is slidably connected to the slide groove (3), and the sliding rod (5) is fixedly connected to the output end of the telescopic push rod (4). The housing (8) is rotatably connected to the lower end of the sliding rod (5) through a rotating shaft (6) and a support ring (7). The clamping mechanism inside the outer casing (8) includes: a crossbar (9), an operating rod (10), and a clamping member (11). The crossbar (9) is pivotally connected to the inner wall of the outer casing (8). The operating rod (10) is rotatably connected to the crossbar (9). The clamping member (11) is slidably connected to the outer wall of the operating rod (10). The driving groove (12) is opened on the inner wall of the outer casing (8) and is used to guide and position the sliding of the clamping member (11).

2. The annealing apparatus for tinplate processing according to claim 1, characterized in that, The device also includes a fixing rod (13) which is slidably connected to the inner wall of the support plate (1). One end of the fixing rod (13) can be selectively inserted into the outer shell (8) to increase the stability of the operation.

3. The annealing apparatus for tinplate processing according to claim 1, characterized in that, The clamping member (11) and the inner wall of the outer shell (8) form a wedge-shaped slip structure through the guiding engagement of the drive groove (12), so that the clamping member (11) will be radially tightened when sliding along the operating rod (10).

4. The annealing apparatus for tinplate processing according to claim 1, characterized in that, The device also includes a circulation mechanism (2), which includes an annular air duct (208) communicating with the inner wall of the annealing furnace (201).

5. The annealing apparatus for tinplate processing according to claim 4, characterized in that, The circulation mechanism (2) also includes a plurality of support blocks (202) fixedly connected to the bottom of the annealing furnace (201), and the top of the support block (202) is fixedly connected to a gas storage tank (203) and a supply tank (205).

6. The annealing apparatus for tinplate processing according to claim 5, characterized in that, The inner wall of the gas storage tank (203) is connected to the inner wall of the annealing furnace (201) through a delivery pipe (204) for supplying gas into the annealing furnace (201).

7. The annealing apparatus for tinplate processing according to claim 5, characterized in that, The inner wall of the supply tank (205) is connected to the annular air guide pipe (208), and the supply tank (205) is also connected to an external air source through an external pipe (206). A valve (207) is provided on the inner wall of the external pipe (206).

8. The annealing apparatus for tinplate processing according to claim 4, characterized in that, The outer surface of the annular air guide pipe (208) is provided with a switch valve (209), and the gas flow rate entering the annealing furnace (201) through the annular air guide pipe (208) is controlled.

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