A heat-reducing device for the drive shaft of a horizontal stretching machine oven

Abstract

This utility model relates to the field of PI film production technology and discloses a heat consumption reduction device for the transmission shaft of a horizontal stretching machine oven. The device includes an oven, with a transmission component fixedly installed at the right end of the oven. A first mounting groove is provided on the right end of the inner wall of the oven, and a connecting shaft is rotatably mounted on the right inner wall of the first mounting groove. An auxiliary mechanism is provided on the oven, including a sealing plate and a top plate. A second mounting groove is provided on the right surface of the oven. Through the "rigid interlocking seal" (outer side) of the sealing plate, the second mounting groove, and the annular sealing groove, combined with the "elastic compression seal" (inner side) of the top plate, the sealing gasket, and the spring, a "double barrier" is formed. The elasticity of the spring can automatically compensate for the wear of the sealing gasket, sealing the gap between the connecting shaft and the side wall of the oven, preventing continuous leakage of high-temperature airflow, reducing the energy replenishment frequency of the heating system, lowering equipment energy consumption and operating costs, and ensuring the production effect of the PI film.

Description

Technical Field

[0001] This utility model relates to the field of PI film production technology, specifically a heat-reducing device for the drive shaft of a horizontal stretching machine oven. Background Technology

[0002] PI film, or polyimide film, is a high-performance polymer film with outstanding comprehensive properties, known as the "golden film." Its core advantages are reflected in multiple dimensions: outstanding high-temperature resistance, with a long-term operating temperature of over 260℃ and a short-term temperature resistance exceeding 400℃; at the same time, it has excellent low-temperature resistance, insulation, mechanical strength, and chemical stability, and can maintain stable performance even in extreme environments. It is an important basic material supporting the development of high-end manufacturing industry.

[0003] In the heating and stretching process of PI film production, the oven is the core equipment. It needs to maintain a precise and stable high-temperature environment to ensure the quality of PI film forming. Multiple sets of drive shafts are arranged at the bottom of the oven. As a key component for the continuous conveying of PI film, the drive shafts need to penetrate the side wall of the oven to realize power transmission. Therefore, gaps are easily formed at the connection between the shaft and the oven wall. High-temperature airflow continuously leaks out through the gaps, causing a large amount of heat loss. This requires the heating system to frequently replenish energy to maintain the set temperature, significantly increasing equipment energy consumption and production operating costs. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] To address the shortcomings of existing technologies, this utility model provides a heat loss reduction device for the drive shaft of a horizontal stretching machine oven. This device solves the problem that gaps easily form at the connection between the shaft and the oven wall, allowing high-temperature airflow to continuously leak out through the gaps, resulting in significant heat loss. This causes the heating system to frequently replenish energy to maintain the set temperature, significantly increasing equipment energy consumption and production operating costs.

[0006] (II) Technical Solution

[0007] To achieve the above objectives, this utility model provides the following technical solution: a heat-reducing device for the transmission shaft of a horizontal stretching machine oven, comprising an oven, a transmission component fixedly installed at the right end of the oven, a first mounting groove being provided at the right end of the inner wall of the oven, and a connecting shaft being rotatably installed on the right inner wall of the first mounting groove;

[0008] An auxiliary mechanism is installed on the oven and includes a sealing plate and a top plate. A second mounting groove is provided on the right surface of the oven. The right end of the connecting shaft rotates through the second mounting groove. The sealing plate is fixedly installed inside the second mounting groove. An annular sealing groove is provided on the right surface of the connecting shaft corresponding to the position of the sealing plate. The inner ring of the left surface of the sealing plate is inserted into the annular sealing groove. The left end of the rotating shaft on the transmission assembly rotates through the right surface of the connecting shaft. The rotating shaft on the transmission assembly is fixedly connected to the connecting shaft. An mounting cylinder is installed inside the first mounting groove. The top plate is slidably installed inside the left end of the mounting cylinder. A sealing gasket is installed on the left end of the top plate. Both the top plate and the sealing gasket are in rotatable contact with the outer surface of the connecting shaft.

[0009] Preferably, the auxiliary mechanism further includes an annular plate and a spring. The annular plate is fixedly installed on the right end of the inner wall of the mounting cylinder, and the spring is fixedly installed on the left surface of the annular plate. The left end of the spring is fixedly connected to the top plate, and the spring is sleeved on the outer surface of the connecting shaft. The annular plate is in rotatable contact with the outer surface of the connecting shaft.

[0010] Preferably, the left surface of the top plate is provided with four guide grooves, and guide rods are slidably inserted into the interior of each of the four guide grooves.

[0011] Preferably, the left ends of the four guide rods are fixedly connected to a mounting plate, and an annular groove is formed on the inner arc surface of the mounting plate corresponding to the convex ring position of the sealing gasket.

[0012] Preferably, the left surface of the mounting plate is threaded with three first fixing bolts.

[0013] Preferably, the right surface of the sealing plate is threaded with three second fixing bolts.

[0014] Preferably, the sealing plate consists of three annular plates of different sizes, with the largest annular plate located on the right side and the other two annular plates located on the left surface of the largest annular plate and coaxial with the largest annular plate.

[0015] Preferably, a drive shaft is fixedly connected to the left end of the connecting shaft.

[0016] (III) Beneficial Effects

[0017] Compared with the prior art, this utility model provides a heat loss reduction device for the drive shaft of a horizontal stretching machine oven, which has the following beneficial effects:

[0018] 1. The heat loss reduction device for the drive shaft of the horizontal stretching machine oven forms a "double barrier" by combining the "rigid interlocking seal" (outer side) of the sealing plate, the second mounting groove, and the annular sealing groove with the "elastic compression seal" (inner side) of the top plate, the sealing gasket, and the spring. The elasticity of the spring can automatically compensate for the wear of the sealing gasket, seal the gap between the connecting shaft and the side wall of the oven, prevent the continuous leakage of high-temperature airflow, reduce the energy replenishment frequency of the heating system, reduce equipment energy consumption and operating costs, and ensure the production effect of PI film. Attached Figure Description

[0019] Figure 1 This is a top view schematic diagram of the overall structure of the heat loss reduction device for the drive shaft of the horizontal stretching machine oven of this utility model;

[0020] Figure 2 This is a top-view cross-sectional view of the internal structure of the heat dissipation device for the drive shaft of the horizontal stretching machine oven of this utility model;

[0021] Figure 3 for Figure 2 Enlarged structural diagram at point A in the middle;

[0022] Figure 4 This is a top view of the internal cross-section of the mounting cylinder of this utility model.

[0023] Figure 5 This is a cross-sectional view of the sealing plate of this utility model.

[0024] In the diagram: 1. Oven; 2. Transmission assembly; 3. First mounting groove; 4. Connecting shaft; 5. Sealing plate; 6. Top plate; 7. Second mounting groove; 8. Annular sealing groove; 9. Mounting cylinder; 10. Sealing gasket; 11. Annular plate; 12. Spring; 13. Guide groove; 14. Guide rod; 15. Mounting plate; 16. Annular groove; 17. First fixing bolt; 18. Second fixing bolt; 19. Transmission shaft. Detailed Implementation

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

[0026] Please see Figure 1-5 This utility model provides a new technical solution: a heat consumption reduction device for the transmission shaft of a horizontal stretching machine oven, including an oven 1, a transmission component 2 fixedly installed on the right end of the oven 1, a first mounting groove 3 opened on the right end of the inner wall of the oven 1, and a connecting shaft 4 rotatably installed on the right inner wall of the first mounting groove 3.

[0027] An auxiliary mechanism is installed on the oven 1. The auxiliary mechanism includes a sealing plate 5 and a top plate 6. A second mounting groove 7 is provided on the right surface of the oven 1. The right end of the connecting shaft 4 rotates through the interior of the second mounting groove 7. The sealing plate 5 is fixedly installed inside the second mounting groove 7. An annular sealing groove 8 is provided on the right surface of the connecting shaft 4 corresponding to the position of the sealing plate 5. The inner ring of the left surface of the sealing plate 5 is inserted into the interior of the annular sealing groove 8. The left end of the rotating shaft on the transmission assembly 2 rotates through the right surface of the connecting shaft 4. The rotating shaft on the transmission assembly 2 is fixedly connected to the connecting shaft 4. An mounting cylinder 9 is installed inside the first mounting groove 3. The top plate 6 is slidably installed inside the left end of the mounting cylinder 9. A sealing gasket 10 is installed on the left end of the top plate 6. Both the top plate 6 and the sealing gasket 10 are in rotatable contact with the outer surface of the connecting shaft 4.

[0028] Furthermore, the auxiliary mechanism also includes an annular plate 11 and a spring 12. The annular plate 11 is fixedly installed on the right end of the inner wall of the mounting cylinder 9, and the spring 12 is fixedly installed on the left surface of the annular plate 11. The left end of the spring 12 is fixedly connected to the top plate 6, and the spring 12 is sleeved on the outer surface of the connecting shaft 4. The annular plate 11 and the outer surface of the connecting shaft 4 are in rotatable contact.

[0029] Furthermore, the "rigid fitting seal" (outer side) of the sealing plate 5, the second mounting groove 7, and the annular sealing groove 8, combined with the "elastic compression seal" (inner side) of the top plate 6, the sealing gasket 10, and the spring 12, forms a "double barrier" inside and outside. The elasticity of the spring 12 can automatically compensate for the wear of the sealing gasket 10, seal the gap between the connecting shaft 4 and the side wall of the oven, prevent the continuous leakage of high-temperature airflow, reduce the energy replenishment frequency of the heating system, reduce equipment energy consumption and operating costs, and ensure the production effect of PI film.

[0030] Furthermore, four guide grooves 13 are provided on the left surface of the top plate 6, and guide rods 14 are slidably inserted into the interior of each of the four guide grooves 13.

[0031] Furthermore, the left ends of the four guide rods 14 are fixedly connected to mounting plates 15, and annular grooves 16 are provided on the inner arc surface of the mounting plates 15 corresponding to the convex ring position of the sealing gasket 10.

[0032] Furthermore, three first fixing bolts 17 are threaded onto the left surface of the mounting plate 15.

[0033] Furthermore, three second fixing bolts 18 are threaded onto the right surface of the sealing plate 5.

[0034] Furthermore, the sealing plate 5 consists of three annular plates of different sizes, with the largest annular plate located on the right side and the other two annular plates located on the left surface of the largest annular plate and coaxial with the largest annular plate.

[0035] Furthermore, a drive shaft 19 is fixedly connected to the left end of the connecting shaft 4.

[0036] Furthermore, the sealing plate 5 is fixed to the second mounting groove 7 on the right surface of the oven 1 by three second fixing bolts 18, and its left inner ring is precisely inserted into the annular sealing groove 8 on the right surface of the connecting shaft 4, forming a "groove-plate" sealing structure between the connecting shaft 4 and the outer wall of the oven, blocking the heat leakage path of the outer gap. The mounting cylinder 9 is fixed in the first mounting groove 3 at the right end of the inner wall of the oven 1. The spring 12 between the annular plate 11 (fixed to the right end of the inner wall of the mounting cylinder 9) and the top plate 6 (sliding on the left end of the mounting cylinder 9) is in a pre-compressed state, pushing the top plate 6. The plate 6 moves to the left, so that the top plate 6 and the sealing gasket 10 on the left side are tightly attached to the outer surface of the connecting shaft 4, forming an "elastic compression" sealing structure between the connecting shaft 4 and the inner wall of the oven. The four guide grooves 13 on the left surface of the top plate 6 are slidably engaged with the guide rod 14. The left end of the guide rod 14 is connected to the mounting plate 15. The mounting plate 15 is fixedly installed on the inner wall of the oven 1 by three first fixing bolts 17, ensuring that the top plate 6 only slides axially (without radial displacement), maintaining the stable contact between the sealing gasket 10 and the connecting shaft 4, thereby reducing the heat consumption of the horizontal stretching machine oven.

[0037] Structural Description:

[0038] Oven 1: The main high-temperature working body of the device, providing a stable high-temperature environment for heating and stretching PI film. The transmission component 2 is fixed at the right end, and the first mounting groove 3 is opened at the right end of the inner wall, which is the mounting base for the connecting shaft 4 and auxiliary mechanism, ensuring the stability of the overall structure.

[0039] Transmission component 2: It is fixed at the right end of the oven 1. Its right end of the rotating shaft can be connected to the motor, and its left end of the rotating shaft passes through to the right surface of the connecting shaft 4 and is fixed thereto. It can transmit power to the connecting shaft 4, thereby driving the transmission shaft 19 to rotate and realize the PI film transmission.

[0040] First mounting groove 3: It is opened at the right end of the inner wall of oven 1, and is used to install and fix the mounting cylinder 9, provide rotational mounting space for connecting shaft 4, and provide assembly positions for components such as top plate 6 and spring 12 in auxiliary mechanism, so as to ensure the orderly arrangement of inner sealing structure.

[0041] Connecting shaft 4: Rotatably mounted on the right inner wall of the first mounting groove 3, with its right end extending through to the second mounting groove 7, and its left end connected to the drive shaft 19. An annular sealing groove 8 is opened on its outer surface, which can transmit the power of the transmission assembly 2.

[0042] Sealing plate 5: It is an auxiliary mechanism, consisting of three coaxial ring plates of different sizes. It is installed in the second mounting groove 7 by three second fixing bolts 18. The inner ring of the left surface is inserted with an annular sealing groove 8, which can seal the gap between the connecting shaft 4 and the outer wall of the oven 1 to prevent heat from escaping.

[0043] Top plate 6: An auxiliary mechanism component, which is slidably mounted inside the left end of the mounting cylinder 9. The left end is equipped with a sealing gasket 10, which rotates and contacts the outer surface of the connecting shaft 4. Under the thrust of the spring 12, it can drive the sealing gasket 10 to tightly adhere to the connecting shaft 4, forming an inner elastic seal.

[0044] The second mounting groove 7 is located on the right surface of the oven 1, providing a dedicated mounting space for the sealing plate 5. This ensures that the sealing plate 5 can accurately fit with the annular sealing groove 8 of the connecting shaft 4, while also ensuring the structural stability of the sealing plate 5 after installation and improving the sealing effect.

[0045] Annular sealing groove 8: It is opened on the right surface of the connecting shaft 4 at the position corresponding to the sealing plate 5, so that the inner ring of the left surface of the sealing plate 5 can be inserted to form a "groove-plate" mating structure, which increases the sealing contact area and effectively blocks the heat overflow channel between the connecting shaft 4 and the outside of the oven 1.

[0046] Mounting cylinder 9: Installed inside the first mounting groove 3, it provides sliding guide space for the top plate 6, and can also fix the annular plate 11, so that the spring 12 has a stable mounting base, ensuring the orderly assembly and normal operation of the inner sealing components of the auxiliary mechanism;

[0047] Sealing gasket 10: Installed on the left end of the top plate 6, it rotates and contacts the outer surface of the connecting shaft 4. It is pushed by the top plate 6 to fit tightly against the connecting shaft 4, which can fill the tiny gap between the connecting shaft 4 and the top plate 6, enhance the inner sealing effect, and further reduce heat leakage.

[0048] Annular plate 11: A component of the auxiliary mechanism, fixed to the right end of the inner wall of the mounting cylinder 9, with a spring 12 mounted on its left surface, which rotatably contacts the outer surface of the connecting shaft 4, providing stable support for the spring 12 and ensuring that the spring 12 can apply continuous thrust to the top plate 6;

[0049] Spring 12: An auxiliary mechanism component, sleeved on the outer surface of the connecting shaft 4, with the annular plate 11 and the top plate 6 connected at both ends respectively. It is in a pre-compressed state and can apply a continuous elastic thrust to the top plate 6, so that the sealing gasket 10 is always in close contact with the connecting shaft 4, and can also compensate for gap changes.

[0050] Guide groove 13: Four grooves are formed on the left surface of the top plate 6. They allow the guide rod 14 to slide and insert into the top plate 6, which can limit the movement direction of the top plate 6, ensure that the top plate 6 slides only along the axial direction, avoid its radial displacement, and ensure that the sealing gasket 10 and the connecting shaft 4 fit stably.

[0051] Guide rod 14: There are four rods in total. They are slidably inserted into the guide groove 13 and connected to the mounting plate 15 at the left end. They can work with the guide groove 13 to limit the movement trajectory of the top plate 6, prevent the top plate 6 from radially shifting due to vibration, and ensure the sealing stability of the inner sealing structure.

[0052] Mounting plate 15: The left end is fixed to the inner wall of the oven 1 at the position corresponding to the first mounting groove 3 by three first fixing bolts 17. The right end is connected to four guide rods 14. The inner arc surface has an annular groove 16, which can fix the guide rods 14 and provide stable support for the guide rods 14. At the same time, the annular groove 16 can be adapted to the convex ring of the sealing gasket 10 to assist in fixing the sealing gasket 10.

[0053] Annular groove 16: It is formed on the inner arc surface of the mounting plate 15 corresponding to the convex ring of the sealing gasket 10. It can accommodate the convex ring of the sealing gasket 10, and plays a role in positioning and fixing the sealing gasket 10, preventing the sealing gasket 10 from shifting during operation and ensuring stable sealing effect.

[0054] First fixing bolt 17: There are three in total. They are threaded on the left surface of the mounting plate 15 and can fix the mounting plate 15 to the inner wall of the oven 1 at the position corresponding to the first mounting groove 3, so that the guide rod 14 remains stable, thereby ensuring the guiding effect of the guide rod 14 on the top plate 6, and at the same time, it is convenient to disassemble the mounting plate 15 to replace the sealing gasket 10.

[0055] The second fixing bolt 18 consists of three bolts threaded onto the right surface of the sealing plate 5. These bolts securely fix the sealing plate 5 within the second mounting groove 7, preventing it from loosening during device operation and ensuring a stable fit between the sealing plate 5 and the annular sealing groove 8, thus maintaining the outer sealing effect.

[0056] Drive shaft 19: Fixed to the left end of connecting shaft 4, located inside oven 1, it can receive the power transmitted by connecting shaft 4 and realize the smooth transmission of PI film inside the oven. It is the key component that converts the power of transmission assembly 2 into PI film transmission action.

[0057] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A heat-reducing device for the drive shaft of a horizontal stretching machine oven, comprising an oven (1), wherein a transmission assembly (2) is fixedly installed at the right end of the oven (1), characterized in that: The oven (1) has a first mounting groove (3) on the right end of its inner wall, and a connecting shaft (4) is rotatably mounted on the right inner wall of the first mounting groove (3). The auxiliary mechanism is set on the oven (1). The auxiliary mechanism includes a sealing plate (5) and a top plate (6). A second mounting groove (7) is opened on the right surface of the oven (1). The right end of the connecting shaft (4) rotates through the inside of the second mounting groove (7). The sealing plate (5) is fixedly installed inside the second mounting groove (7). An annular sealing groove (8) is opened on the right surface of the connecting shaft (4) corresponding to the position of the sealing plate (5). The inner ring of the left surface of the sealing plate (5) is inserted into the inside of the annular sealing groove (8). The left end of the rotating shaft on the transmission assembly (2) rotates through the right surface of the connecting shaft (4). The rotating shaft on the transmission assembly (2) is fixedly connected to the connecting shaft (4). An mounting cylinder (9) is installed inside the first mounting groove (3). The top plate (6) is slidably installed inside the left end of the mounting cylinder (9). A sealing gasket (10) is installed on the left end of the top plate (6). The top plate (6) and the sealing gasket (10) are both in rotational contact with the outer surface of the connecting shaft (4).

2. The heat loss reduction device for the drive shaft of a horizontal stretching machine oven according to claim 1, characterized in that: The auxiliary mechanism also includes an annular plate (11) and a spring (12). The annular plate (11) is fixedly installed on the right end of the inner wall of the mounting cylinder (9), and the spring (12) is fixedly installed on the left surface of the annular plate (11). The left end of the spring (12) is fixedly connected to the top plate (6). The spring (12) is sleeved on the outer surface of the connecting shaft (4), and the annular plate (11) and the outer surface of the connecting shaft (4) are in rotational contact.

3. The heat loss reduction device for the drive shaft of a horizontal stretching machine oven according to claim 1, characterized in that: The top plate (6) has four guide grooves (13) on its left surface, and guide rods (14) are slidably inserted into the interior of each of the four guide grooves (13).

4. The heat loss reduction device for the drive shaft of a horizontal drawing machine oven according to claim 3, characterized in that: The left ends of the four guide rods (14) are fixedly connected to the mounting plate (15), and an annular groove (16) is provided on the inner arc surface of the mounting plate (15) corresponding to the convex ring position of the sealing gasket (10).

5. The heat loss reduction device for the drive shaft of a horizontal stretching machine oven according to claim 4, characterized in that: The left surface of the mounting plate (15) is threaded with three first fixing bolts (17).

6. The heat loss reduction device for the drive shaft of a horizontal stretching machine oven according to claim 1, characterized in that: The right surface of the sealing plate (5) is threaded with three second fixing bolts (18).

7. The heat loss reduction device for the drive shaft of a horizontal drawing machine oven according to claim 1, characterized in that: The sealing plate (5) consists of three annular plates of different sizes, with the largest annular plate located on the right side and the other two annular plates located on the left surface of the largest annular plate and coaxial with the largest annular plate.

8. The heat loss reduction device for the drive shaft of a horizontal drawing machine oven according to claim 1, characterized in that: The left end of the connecting shaft (4) is fixedly connected to the transmission shaft (19).

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