A sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine

Abstract

This utility model discloses a sealing device for the main drive shaft of the leveling disc in a ZJ118 cigarette machine, including a leveling disc mounting base, a drive shaft body, and a leveling disc assembly. A universal coupling is connected to one end of the drive shaft body to transmit power to the drive shaft body. The other end of the drive shaft body extends into the leveling disc mounting base and is poweredly connected to the leveling disc assembly. The drive shaft body includes a dust cover, a connecting flange, a drive gear, and a flange sleeve. The dust cover has a circular cup structure with a connecting hole on its bottom surface. The female end of the universal coupling extends into the dust cover. The connecting flange is located at the bottom of the dust cover. The female end, dust cover, and connecting flange are connected as a whole by screws. The connecting flange is keyed to the drive gear. A first sealing component is provided at the port of the connecting flange. This utility model prevents oil leakage during use.

Description

Technical Field

[0001] This utility model relates to the field of sealing technology, specifically to a sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine. Background Technology

[0002] The leveling disc is a crucial component in the weight control system of modern cigarette machines. Its stability plays a vital role in controlling cigarette weight. The main drive coupling of the leveling disc in the original ZJ118 machine mainly consists of a flange connecting seat, a skeleton oil seal, a pressure cap, and screws. The flange end of the flange connecting seat is connected to the drive shaft of the leveling disc assembly. After long-term use, we found that the connection device of the main drive coupling of the ZJ118 leveling disc has a design flaw. The main flaws are: the flange connecting seat rotates at a high speed of 2667 r / min, and the lip of the skeleton oil seal that it is in contact with is prone to wear. At the same time, the surface of the flange connecting seat will also be worn. When oil leakage occurs in this part, it is easy to seep from the back of the bottom plate of the leveling disc assembly onto the spiral coil returner, resulting in oily cigarette smoke. When oil leakage occurs, due to the large number of disassembly parts, it requires 2-3 repairmen to spend 1.5 hours working together to complete the task, which seriously affects normal production. Therefore, in order to avoid oil leakage, this utility model is proposed. Utility Model Content

[0003] The purpose of this utility model is to provide a sealing device for the main drive shaft of the leveling disc of the ZJ118 cigarette machine to prevent oil leakage during use.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0005] A sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine includes a leveling disc mounting base, a drive shaft body, and a leveling disc assembly. One end of the drive shaft body is connected to a universal coupling, which transmits power to the drive shaft body through the universal coupling. The other end of the drive shaft body extends into the leveling disc mounting base and is poweredly connected to the leveling disc assembly.

[0006] The drive shaft body includes a dust cover, a connecting flange, a drive gear, and a flange sleeve. The dust cover has a circular cup structure with a connecting hole on its bottom surface. The female end of the universal coupling extends into the dust cover. The connecting flange is located at the bottom of the dust cover. The female end, the dust cover, and the connecting flange are connected as a whole by screws. The connecting flange is keyed to the drive gear. A first sealing component is provided at the port of the connecting flange. The drive gear extends into the flange sleeve. A second sealing component is provided in the gap between the boss of the connecting flange and the inner hole of the flange sleeve. The flange sleeve is connected to the leveling plate mounting base by screws.

[0007] Furthermore, the dust cover is equipped with a pipe clamp, which secures the corrugated sleeve to the dust cover.

[0008] Furthermore, the first sealing assembly includes a first end screw, a sealing washer, an O-ring rubber seal, and a sealing end cap. The O-ring rubber seal is provided on the outer circle of the sealing end cap, and the sealing end cap is located at the port of the connecting flange. The first end screw passes through the sealing washer and the sealing end cap to connect the two to the shaft end of the drive gear.

[0009] Furthermore, the inner wall of the port of the connecting flange and the shaft end of the drive gear are both provided with keyways, and the two keyways are connected by a first key body.

[0010] Furthermore, the second sealing component is a skeleton sealing ring, which is fitted onto the boss of the connecting flange and positioned in the gap between the boss of the connecting flange and the inner hole of the flange sleeve.

[0011] Furthermore, it also includes an axial positioning snap ring, a first bearing, a second bearing, and a boss connecting sleeve. Both ends of the drive gear are provided with bosses. One boss is provided with a first bearing, and the other boss is provided with an axial positioning snap ring and a second bearing. A boss connecting sleeve is fitted on the outer periphery of the second bearing. A sealing washer is provided at the port of the boss connecting sleeve. The second end screw passes through the sealing washer and the boss connecting sleeve to connect the gear to the other shaft end of the drive gear. The boss connecting sleeve is connected to the gear key of the leveling plate assembly through a second key body.

[0012] Furthermore, the boss of the connecting flange is mirror-finished to give the surface roughness of the connecting flange a value of 0.1µm, and the height of the circumferential mating surface of the boss of the connecting flange is 2-3mm greater than the thickness of the skeleton sealing ring.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention provides a first sealing assembly at the port of the connecting flange. The first sealing assembly includes a first end screw, a sealing washer, an O-ring rubber seal, and a sealing end cap. These components work together to form a double sealing device, providing an internal seal for the connecting flange and preventing internal oil leakage. Simultaneously, a skeleton seal is designed on the outer surface of the connecting flange. The inner hole of the skeleton seal mates with the connecting flange, and its outer surface mates with the inner hole of the flange sleeve, preventing external oil leakage from the connecting flange. These internal and external sealing measures prevent lubricating oil from leaking to one end of the connecting flange. Furthermore, the boss of the connecting flange is mirror-finished, and the height of the boss is designed to be 1-3mm greater than the thickness of the skeleton seal. This allows for axial fine adjustment of the installation position of the skeleton oil seal, avoiding worn mating surfaces and extending the service life of the flange connecting seat. The mirror-finishing of the mating surfaces forms a thin film, effectively sealing the surface and reducing the wear cycle of the skeleton oil seal, thus extending its service life. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the structure of this utility model.

[0016] Figure 2 This is a disassembly diagram of the present invention.

[0017] Figure 3 This is a physical structural diagram of the present invention.

[0018] Figure 4 for Figure 2 A schematic diagram of the explosion of point A.

[0019] Figure 5 This is a schematic diagram showing the wear of the flange boss.

[0020] In the diagram, 1-universal coupling, 2-drive shaft body, 3-leveling disc mounting base, 4-leveling disc assembly, 5-female end, 6-pipe clamp, 7-dust cover, 8-first end screw, 9-sealing washer, 10-O-ring seal, 11-sealing end cover, 12-connecting flange, 13-skeleton seal, 14-first bearing, 15-first key, 16-drive gear, 17-positioning snap ring, 18-second bearing, 19-second key, 20-bore connecting sleeve, 21-sealing washer, 22-second end screw. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can typically be arranged and designed in various different configurations.

[0022] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0023] In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] refer to Figure 1-3 As shown, this utility model provides a sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine, including a leveling disc mounting base 3, a drive shaft body 2, and a leveling disc assembly 4. One end of the drive shaft body 2 is connected to a universal coupling 1 so that power is transmitted to the drive shaft body 2 through the universal coupling 1. The other end of the drive shaft body 2 extends into the leveling disc mounting base 3 and is poweredly connected to the leveling disc assembly 4. Furthermore, this power connection can be achieved by a key connection.

[0025] refer to Figure 4As shown, the drive shaft body 2 includes a dust cover 7, a connecting flange 12, a drive gear 16, and a flange sleeve 24. The dust cover 7 has a circular cup structure and a connecting hole on its bottom surface. The female end 5 of the universal coupling 1 extends into the dust cover 7. The connecting flange 12 is located at the bottom of the dust cover 7. The female end 5, the dust cover 7, and the connecting flange 12 are connected by screws to form a whole. The connecting flange 12 is keyed to the drive gear 16. Specifically, the inner wall of the port of the connecting flange 12 and the shaft end of the drive gear 16 are both provided with keyways, and the two keyways are connected by a first key body 15. A first sealing assembly is provided at the port of the connecting flange 12 to provide an internal seal for the connecting flange 12 and prevent internal oil leakage. The drive gear 16 extends into the flange sleeve 24. A second sealing assembly is provided at the gap between the boss of the connecting flange 12 and the inner hole of the flange sleeve 24 to prevent external oil leakage from the connecting flange. The flange sleeve 24 is connected to the leveling plate mounting base 3 by screws.

[0026] In some embodiments, the dust cover 7 is provided with a pipe clamp 6, which fixes the corrugated sleeve 25 to the dust cover 7. The other end of the corrugated sleeve 25 is also connected to the universal coupling 1 by a clamp. This arrangement prevents the entry of smoke and dust.

[0027] The first sealing assembly includes a first end screw 8, a sealing washer 9, an O-ring rubber seal 10, and a sealing end cap 11. The sealing washer 9 has a specification of 7x13x1, and the O-ring rubber seal 10 has a specification of 19.2x3.0. The O-ring rubber seal 10 is provided on the outer circle of the sealing end cap 11, and the sealing end cap 11 is located at the port of the connecting flange 12. The first end screw 8 passes through the sealing washer 9 and the sealing end cap 11 to connect them to the shaft end of the drive gear 16. The first end screw 8, the sealing washer 9, the O-ring rubber seal 10, and the sealing end cap 11 work together to form a double sealing device, providing an internal sealing function for the connecting flange 12.

[0028] The second sealing component is a skeleton sealing ring 13. The skeleton sealing ring 13 is fitted onto the boss of the connecting flange 12 and positioned within the gap between the boss of the connecting flange 12 and the inner hole of the flange sleeve 24. In actual use, the connecting flange 12 rotates at speeds as high as 2667 r / min. Figure 5As shown in the box, the upper skeleton oil seal lip is prone to wear, causing the shaft end diameter to decrease. This results in the oil seal failing to seal properly during subsequent replacements, requiring frequent replacements. To overcome this problem, the boss of the connecting flange 12 is mirror-finished, giving it a surface roughness of 0.1µm. This allows a thin film to form between the connecting flange 12 and the skeleton sealing ring 13 during installation. Furthermore, the height of the circumferential mating surface of the boss of the connecting flange 12 is 2-3mm greater than the thickness of the skeleton sealing ring 13 (this can be achieved by reducing the chamfer at the boss port). This allows the skeleton sealing ring 13 to move axially along the connecting flange 12, thus avoiding the worn outer surface of the boss on the connecting flange 12, thereby extending the service life of the flange connector.

[0029] In addition, the device also includes an axial positioning snap ring 17, a first bearing 14, a second bearing 18, and a boss connecting sleeve 20. It should be noted that both ends of the drive gear 16 are provided with bosses and a shaft end is provided at the center of the boss. The first bearing 14 is provided on one of the bosses, and the axial positioning snap ring 17 and the second bearing 18 are provided on the other boss. The boss connecting sleeve 20 is sleeved on the outer periphery of the second bearing 18. A sealing washer 21 is provided at the port of the boss connecting sleeve 20. The sealing washer 21 here also serves to prevent oil leakage of the device. The second end screw 22 passes through the sealing washer 21 and the boss connecting sleeve 20 to connect to the other shaft end of the drive gear 16. The boss connecting sleeve 20 is connected to the gear key of the leveling plate assembly 4 through the second key body 19.

[0030] Although the present invention has been described herein with reference to several illustrative embodiments, it should be understood that those skilled in the art can devise many other modifications and implementations that fall within the scope and spirit of the principles disclosed herein. More specifically, various modifications and improvements can be made to the components or layout of the subject matter arrangement within the scope of the disclosure, drawings, and claims. Besides modifications and improvements to the components or layout, other uses will be apparent to those skilled in the art.

Claims

1. A sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine, characterized in that: It includes a leveling plate mounting base (3), a drive shaft body (2), and a leveling plate assembly (4). One end of the drive shaft body (2) is connected to a universal coupling (1) so that power is transmitted to the drive shaft body (2) through the universal coupling (1). The other end of the drive shaft body (2) extends into the leveling plate mounting base (3) and is poweredly connected to the leveling plate assembly (4). The drive shaft body (2) includes a dust cover (7), a connecting flange (12), a drive gear (16), and a flange sleeve (24). The dust cover (7) is a circular cup structure with a connecting hole on its bottom surface. The female end (5) of the universal coupling (1) extends into the dust cover (7). The connecting flange (12) is located at the bottom of the dust cover (7). The female end (5), the dust cover (7), and the connecting flange (12) are connected by screws to form a whole. The connecting flange (12) is keyed to the drive gear (16). A first sealing component is provided at the port of the connecting flange (12). The drive gear (16) extends into the flange sleeve (24). A second sealing component is provided at the gap between the boss of the connecting flange (12) and the inner hole of the flange sleeve (24). The flange sleeve (24) is connected to the leveling plate mounting seat (3) by screws.

2. The sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine according to claim 1, characterized in that: The dust cover (7) is provided with a pipe clamp (6), and the corrugated sleeve (25) is fixed to the dust cover (7) by the pipe clamp (6).

3. The sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine according to claim 1, characterized in that: The first sealing assembly includes a first end screw (8), a sealing washer (9), an O-ring rubber seal (10), and a sealing end cap (11). The O-ring rubber seal (10) is provided on the outer circle of the sealing end cap (11), and the sealing end cap (11) is located at the port of the connecting flange (12). The first end screw (8) passes through the sealing washer (9) and the sealing end cap (11) to connect the two to the shaft end of the drive gear (16).

4. The sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine according to claim 1, characterized in that: The inner wall of the port of the connecting flange (12) and the shaft end of the drive gear (16) are both provided with keyways, and the two keyways are connected by the first key body (15).

5. The sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine according to claim 1, characterized in that: The second sealing component is a skeleton sealing ring (13), which is fitted onto the boss of the connecting flange (12) and positioned in the gap between the boss of the connecting flange (12) and the inner hole of the flange sleeve (24).

6. The sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine according to claim 1, characterized in that: It also includes an axial positioning snap ring (17), a first bearing (14), a second bearing (18), and a boss connecting sleeve (20). Both ends of the drive gear (16) are provided with bosses. One of the bosses is provided with a first bearing (14), and the other boss is provided with an axial positioning snap ring (17) and a second bearing (18). The second bearing (18) is fitted with a boss connecting sleeve (20) on its outer periphery. A sealing washer (21) is provided at the port of the boss connecting sleeve (20). The second end screw (22) passes through the sealing washer (21) and the boss connecting sleeve (20) to connect it to the other shaft end of the drive gear (16). The boss connecting sleeve (20) is connected to the gear key of the leveling plate assembly (4) through the second key body (19).

7. The sealing device for the main drive shaft of the leveling disc of a ZJ118 cigarette machine according to claim 5, characterized in that: The boss of the connecting flange (12) is mirror-finished so that the surface roughness of the connecting flange (12) is 0.1um, and the height of the circumferential mating surface of the boss of the connecting flange (12) is 2-3mm greater than the thickness of the skeleton sealing ring (13).

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