Annealing device

Abstract

The utility model discloses an annealing device which is characterized in that an annealing furnace is arranged on a frame, a plurality of passing rollers, a tension roller and a floating assembly are arranged on the incoming material side of the annealing furnace, a flattening roller and a traction assembly are arranged on the discharging side of the annealing furnace, and a heating module is arranged in the annealing furnace; a plurality of horizontal first heating assemblies and a plurality of horizontal second heating assemblies are arranged on a cover body of the heating module, a lifting structure is connected to the cover body, and the height of the heating module can be adjusted through the lifting structure. The heating module with the adjustable height is arranged in the annealing furnace, so that the thin film is heated more uniformly, local overheating or supercooling is avoided, the uniformity of annealing stability is ensured, the annealing effect is improved, the internal stress of the thin film is eliminated more thoroughly, and the dimensional stability of the thin film is ensured.

Description

Technical Field

[0001] This utility model relates to the field of thin film processing technology, and in particular to an annealing apparatus. Background Technology

[0002] Annealing equipment is used in PI film (polyimide film) production lines to eliminate internal stress in the film and improve its tensile strength.

[0003] Existing annealing equipment often suffers from uneven annealing temperatures and localized overheating, which can lead to incomplete stress relief in the PI film, resulting in significant residual stress and affecting the dimensional stability of the PI film, making it prone to deformation. Furthermore, existing annealing equipment is inconvenient to disassemble and reassemble; maintenance and component replacement require disassembling the entire furnace structure, which is difficult, time-consuming, and costly. Utility Model Content

[0004] In response to the shortcomings of the existing annealing devices, the applicant provides a structurally sound annealing device that provides uniform annealing temperature, avoids localized overheating, facilitates maintenance, shortens maintenance time, and reduces maintenance costs.

[0005] The technical solution adopted in this utility model is as follows:

[0006] An annealing apparatus includes an annealing furnace mounted on a frame. The incoming side of the annealing furnace is equipped with several guide rollers, tension rollers, and a floating assembly. The outgoing side of the annealing furnace is equipped with flattening rollers and a traction assembly. A heating module is installed inside the annealing furnace. The heating module's cover is equipped with several sets of horizontal first heating components and several sets of horizontal second heating components. A lifting structure is connected to the cover, allowing the height of the heating module to be adjusted.

[0007] As a further improvement to the above technical solution:

[0008] The lifting structure includes a screw and a handwheel assembly. One end of the screw is connected to the cover, and the other end of the screw is connected to the handwheel assembly. Rotating the handwheel assembly can drive the cover and each group of first heating components and second heating components to rise and fall through the screw.

[0009] The lifting structure includes an adjusting rod and a positioning assembly. One end of the adjusting rod is connected to the cover. Several positioning holes are opened on the rod. The positioning assembly includes a positioning seat and a positioning pin. The adjusting rod is movably inserted into the positioning seat, and the positioning pin is inserted into the corresponding positioning hole to position the adjusting rod.

[0010] Inside the annealing furnace, a set of heating modules is set above and below the path through which the thin film travels, with the two sets of heating modules arranged back to back.

[0011] The first heating component and the second heating component are orthogonal, and the second heating component is spaced apart on the side of the first heating component away from the film; the second heating component is disposed above the two ends of the axial direction of the several groups of first heating components; each group of first heating components includes several parallel first heating tubes, which are spaced apart and connected at both ends by first connecting pieces; each group of second heating components includes several parallel second heating tubes, which are spaced apart and connected at both ends by second connecting pieces.

[0012] Lifting structures are connected to the opposite sides of the cover; or lifting structures are installed at the four corners of the cover.

[0013] A protective surface extends from the side of the cover facing the film; a reflective layer is provided on the side of the cover facing the film.

[0014] The handwheel assembly is equipped with a displacement display; the handwheel assembly includes a handwheel body, an outer cover is provided on the outside of the handwheel body, a spacer is fixed at the bottom of the handwheel body, and a float is provided at the top of the handwheel body.

[0015] The annealing furnace has inlet and outlet ports on its left and right sides, respectively. Inspection doors are set on the front and rear sides of the annealing furnace and in front of the heating module. Several temperature measuring instruments are installed on each inspection door. The annealing furnace is equipped with air ducts, and the air circulates in the furnace cavity through the operation of the circulating fan.

[0016] Tension rollers are installed on the discharge side of the annealing furnace, and the tension rollers are arranged between the flattening rollers and the traction assembly; the tension rollers on the receiving side of the annealing furnace are arranged between two adjacent guide rollers, and the floating assembly is arranged between two other adjacent guide rollers. The floating assembly includes a floating roller and a counterweight; the traction assembly includes a traction roller and a drive motor, and the drive motor is connected to the traction roller.

[0017] The beneficial effects of this utility model are as follows:

[0018] The annealing furnace of this invention is equipped with a height-adjustable heating module. According to the heating requirements of different film thicknesses, the heating distance of the heating module is adjusted to make the film heat more evenly, avoid local overheating or undercooling, ensure the stability and uniformity of annealing, improve the annealing effect, eliminate internal stress of the film more thoroughly, ensure the dimensional stability of the film, improve the crystallinity and thermal stability of the film, and improve the surface smoothness. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a partial cross-sectional view of the heating module.

[0021] Figure 3 This is a bottom view of the heating module.

[0022] Figure 4 for Figure 2 Enlarged view of point A in the middle.

[0023] Figure 5 This is a schematic diagram of another embodiment of the heating module.

[0024] In the diagram: 1. Frame; 2. Annealing furnace; 21. Inlet / outlet; 22. Inspection door; 23. Thermometer; 3. Heating module; 31. First heating assembly; 311. First heating tube; 312. First connecting piece; 32. Second heating assembly; 321. Second heating tube; 322. Second connecting piece; 33. Cover; 331. Protective surface; 34. Screw; 35. Connector; 36. Handwheel assembly; 361. Handwheel body; 362. Outer cover; 363. Spacer ring; 364. Float plate; 37. Displacement indicator; 38. Adjusting rod; 381. Positioning hole; 39. Positioning assembly; 391. Positioning seat; 392. Positioning pin; 4. Air duct; 5. Through roller; 6. Tension roller; 7. Floating assembly; 71. Floating roller; 72. Counterweight; 8. Flattening roller; 9. Traction assembly; 91. Traction roller; 92. Drive motor;

[0025] 100. Film. Detailed Implementation

[0026] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0027] like Figure 1 As shown, this utility model provides an annealing device for use in a PI film production line. Its frame 1 is equipped with an annealing furnace 2, several guide rollers 5, tension rollers 6, a floating assembly 7, a flattening roller 8, and a traction assembly 9. The guide rollers 5, tension rollers 6, and floating assembly 7 are arranged on the receiving side of the annealing furnace 2. The tension rollers 6 are arranged between two adjacent guide rollers 5, and the floating assembly 7 is arranged between two other adjacent guide rollers 5. The floating assembly 7 includes a floating roller 71 and a counterweight 72. The flattening roller 8, traction assembly 9, and several guide rollers 5 are arranged on the discharge side of the annealing furnace 2. The traction assembly 9 is arranged between the flattening roller 8 and the guide rollers 5. The traction assembly 9 includes a traction roller 91 and a drive motor 92. The drive motor 92 is connected to the traction roller 91, and the drive motor 92 drives the traction roller 91 to rotate, pulling the film 100 forward. In other embodiments, a tension roller 6 can also be provided on the discharge side of the annealing furnace 2. The tension roller 6 is arranged between the flattening roller 8 and the traction component 9 to balance the tension of the film 100 from the discharge side. The tension rollers 6 on the feeding side and the discharge side cooperate to balance the tension from both sides of the film 100, realize multiple tension adjustments, and adjust the tension of the film 100 in a timely manner to ensure the flatness of the winding.

[0028] The annealing furnace 2 is equipped with a heating module 3, which is used to heat the film 100. The annealing furnace 2 has an air duct 4, which, through the operation of a circulating fan, circulates air within the furnace cavity, resulting in a more uniform temperature field and preventing localized overheating or undercooling. This ensures uniform heating of the film 100 during annealing and improves the annealing effect. The annealing furnace 2 has inlet and outlet ports 21 on its left and right sides, through which the film 100 is fed and discharged. Inspection doors 22 are located on the front and rear sides of the annealing furnace 2, directly opposite the heating module 3. Each inspection door 22 is equipped with several temperature sensors 23, which are connected to the control system and provide real-time temperature feedback. The control system dynamically adjusts the heating power of the heating module 3 in real-time based on the real-time temperature using a PID algorithm, improving temperature uniformity. The inspection door 22 is a quick-opening door, through which the heating module 3 and the temperature measuring instrument 23 can be replaced, which facilitates maintenance, shortens maintenance time, and reduces maintenance costs.

[0029] like Figure 1 As shown, in the annealing furnace 2, a set of heating modules 3 are respectively set above and below the path through which the film 100 travels. The two sets of heating modules 3 are set back to back and heat the film 100 from the top and bottom sides respectively, which improves the uniformity of heating, improves the stability and uniformity, and avoids local overheating or overcooling.

[0030] like Figures 2 to 4 As shown, the heating module 3 is provided with several sets of horizontal first heating components 31 and several sets of horizontal second heating components 32. The first heating components 31 and second heating components 32 are orthogonal, and the second heating components 32 are spaced apart on the side of the first heating components 31 away from the film 100. The second heating components 32 are positioned above the axial ends of the several sets of first heating components 31, which can provide temperature compensation to the ends of the first heating components 31, making the temperature field distribution more uniform. Each set of first heating components 31 includes several parallel first heating tubes 311, which are spaced apart and connected at both ends by first connecting pieces 312. Each set of second heating components 32 includes several parallel second heating tubes 321, which are spaced apart and connected at both ends by second connecting pieces 322. The first heating components 31 and second heating components 32 adopt a modular structure, and each heating tube is detachably connected to the connecting piece, which facilitates quick replacement of the heating tubes, reduces maintenance difficulty and time, and reduces maintenance costs.

[0031] Several sets of first heating components 31 and several sets of second heating components 32 are fixedly connected to the cover 33. The opposite sides of the cover 33 are respectively connected to one end of a screw 34 via connectors 35. The other end of the screw 34 is connected to a handwheel assembly 36. A displacement display 37 is provided on the handwheel assembly 36. Rotating the handwheel assembly 36, via the screw 34, can drive the cover 33 and each set of first heating components 31 and second heating components 32 to rise and fall, thereby adjusting the distance between the heating surface of the heating module 3 and the film surface of the thin film 100, improving the heating effect and heating uniformity, and improving the annealing effect. The displacement display 37 can display the rising and falling displacement value of the heating module 3. Figure 4 As shown, a protective surface 331 extends from the side of the cover 33 facing the film 100. The protective surface 331 is closer to the film 100 than the first heating component 31, protecting the film 100 and preventing direct contact between the heating component and the film 100. A reflective layer is provided on the side of the cover 33 facing the film 100, which can reflect heat from the film 100, reduce heat loss, and improve heating effect and heating uniformity.

[0032] like Figure 4 As shown, the handwheel assembly 36 includes a handwheel body 361, an outer cover 362 is provided on the outside of the handwheel body 361, a spacer 363 is fixed at the bottom of the handwheel body 361, a float plate 364 is provided at the top of the handwheel body 361, and a displacement display 37 is mounted on the float plate 364 and located on the side of the handwheel body 361 away from the film 100.

[0033] In this embodiment, the lifting structure of the heating module 3 adopts a structure in which a screw 34 and a handwheel assembly 36 cooperate. For example... Figure 5 As shown, in other embodiments, the lifting structure of the heating module 3 can also adopt a structure in which the adjusting rod 38 and the positioning component 39 cooperate; one end of the adjusting rod 38 is connected to the cover 33, and a plurality of positioning holes 381 are opened axially at intervals on the rod part of the adjusting rod 38; the positioning component 39 includes a positioning seat 391 and a positioning pin 392. The positioning seat 391 is fixed on the box of the annealing furnace 2, and the adjusting rod 38 is inserted into the positioning seat 391 so as to move up and down. After the adjusting rod 38 is adjusted to the specified position, the positioning pin 392 is inserted into the positioning hole 381 corresponding to the adjusting rod 38 to position the adjusting rod 38.

[0034] In the above embodiment, lifting structures (screws 34, handwheel assembly 36) are provided on opposite sides of the cover 33 of the heating module 3 to adjust the height of the heating module 3 from both sides. In other embodiments, lifting structures can also be provided at the four corners of the cover 33 to adjust the height of the heating module 3 from the four corners, achieving higher adjustment precision.

[0035] In actual use, the film 100 passes through roller 5, tension roller 6, guide roller 5, floating component 7, and guide roller 5 in sequence before being fed into annealing furnace 2. After being heated and annealed in annealing furnace 2, it is sent out and passed through flattening roller 8, traction component 9, and guide roller 5 in sequence to the winding process for winding.

[0036] The annealing furnace 2 of this invention is equipped with a height-adjustable heating module 3. According to the heating requirements of different film thicknesses of the film 100, the heating distance of the heating module 3 is adjusted to make the film 100 heat more evenly, avoid local overheating or undercooling, ensure the uniformity of annealing stability, improve the annealing effect, eliminate the internal stress of the film 100 more thoroughly, ensure the dimensional stability of the film 100, improve the crystallinity and thermal stability of the film 100, and improve the surface smoothness.

[0037] The above description is an explanation of the present utility model and not a limitation thereof. The present utility model can be modified in any form without departing from its spirit.

Claims

1. An annealing apparatus, wherein an annealing furnace (2) is mounted on a frame (1), and a plurality of feed rollers (5), tension rollers (6) and a floating assembly (7) are mounted on the receiving side of the annealing furnace (2), and a flattening roller (8) and a traction assembly (9) are mounted on the discharge side of the annealing furnace (2), characterized in that: The annealing furnace (2) is equipped with a heating module (3). The heating module (3) has several sets of horizontal first heating components (31) and several sets of horizontal second heating components (32) on its cover (33). The cover (33) is connected to a lifting structure, which can adjust the height of the heating module (3).

2. The annealing apparatus according to claim 1, characterized in that: The lifting structure includes a screw (34) and a handwheel assembly (36). The cover (33) is connected to one end of the screw (34), and the other end of the screw (34) is connected to the handwheel assembly (36). Rotating the handwheel assembly (36) can drive the cover (33) and each group of first heating components (31) and second heating components (32) to rise and fall through the screw (34).

3. The annealing apparatus according to claim 1, characterized in that: The lifting structure includes an adjusting rod (38) and a positioning component (39). One end of the adjusting rod (38) is connected to the cover (33). Several positioning holes (381) are opened on the rod part of the adjusting rod (38). The positioning component (39) includes a positioning seat (391) and a positioning pin (392). The adjusting rod (38) is movably inserted into the positioning seat (391), and the positioning pin (392) is inserted into the corresponding positioning hole (381) to position the adjusting rod (38).

4. The annealing apparatus according to claim 1, characterized in that: Inside the annealing furnace (2), a set of heating modules (3) are respectively set above and below the path through which the thin film (100) travels, and the two sets of heating modules (3) are set back to back.

5. The annealing apparatus according to claim 1, characterized in that: The first heating component (31) and the second heating component (32) are orthogonal. The second heating component (32) is spaced apart on the side of the first heating component (31) away from the film (100). The second heating component (32) is disposed above the two ends of the axial direction of the several groups of first heating components (31). Each group of first heating components (31) includes several parallel first heating tubes (311). The several first heating tubes (311) are spaced apart and their two ends are connected by first connecting pieces (312). The group of second heating components (32) includes several parallel second heating tubes (321). The several second heating tubes (321) are spaced apart and their two ends are connected by second connecting pieces (322).

6. The annealing apparatus according to claim 1, characterized in that: Lifting structures are connected to the opposite sides of the cover (33); Alternatively, lifting structures can be installed at the four corners of the cover (33).

7. The annealing apparatus according to claim 1, characterized in that: A protective surface (331) extends out from the side of the cover (33) facing the film (100); a reflective layer is provided on the side of the cover (33) facing the film (100).

8. The annealing apparatus according to claim 1, characterized in that: The handwheel assembly (36) is provided with a displacement display (37); the handwheel assembly (36) includes a handwheel body (361), an outer cover (362) is provided on the outside of the handwheel body (361), a spacer (363) is fixed at the bottom of the handwheel body (361), and a float plate (364) is provided on the top of the handwheel body (361).

9. The annealing apparatus according to claim 1, characterized in that: The annealing furnace (2) has inlet and outlet ports (21) on the left and right sides respectively. Inspection doors (22) are set on the front and back sides of the annealing furnace (2) and opposite the heating module (3). Several temperature measuring instruments (23) are set on each inspection door (22). The annealing furnace (2) is equipped with air duct (4). The air duct (4) allows the air in the furnace cavity of the annealing furnace (2) to flow through the operation of the circulating fan.

10. The annealing apparatus according to claim 1, characterized in that: Tension roller (6) is provided on the discharge side of the annealing furnace (2), and tension roller (6) is arranged between flattening roller (8) and traction assembly (9); tension roller (6) on the receiving side of the annealing furnace (2) is arranged between two adjacent passing rollers (5), and floating assembly (7) is arranged between two other adjacent passing rollers (5). Floating assembly (7) includes floating roller (71) and counterweight (72); traction assembly (9) includes traction roller (91) and drive motor (92), and drive motor (92) is connected to traction roller (91).

Images