Space-adjustable plastic liner rotating device and aging furnace

Abstract

The utility model relates to a spacing-adjustable plastic liner rotating device and an aging oven, a fixed seat is provided with a fixed rubber-coated roller and a movable rubber-coated roller which are parallel to each other, a bracket is coaxially arranged below the movable rubber-coated roller, and an adjusting screw rod penetrates through the middle part of the bracket close to two ends along the radial direction; the same side ends of the two adjusting lead screws are connected with the output ends of the corresponding transmission devices respectively, the input ends of the two transmission devices are connected with the same rotating shaft, the rotating shaft drives the two adjusting lead screws to rotate synchronously through the transmission devices, the nuts arranged on the two adjusting lead screws in a sleeving mode drive the support to move horizontally, and therefore the movable rubber covered roller on the top of the support moves horizontally. Plastic inner containers with different diameters can be placed by adjusting the distance between the movable rubber-coated roller and the fixed rubber-coated roller, one rotating shaft drives the two separated adjusting lead screws to rotate synchronously and drives the movable rubber-coated roller to move horizontally, the moving distance is accurate and controllable, and the plastic inner containers with different diameters can be placed in the plastic inner containers with different diameters. And the parallelism between the fixed rubber covered roller and the movable rubber covered roller is ensured.

Description

Technical Field

[0001] This utility model relates to the field of aging furnace technology, specifically to a rotating device for an adjustable-spacing plastic inner liner and an aging furnace. Background Technology

[0002] The heat treatment of plastic cylinder liners in an aging furnace refers to a heat treatment process in which plastic cylinder liners, formed by rotational molding or blow molding, are placed at a high temperature or room temperature to maintain their shape, size, and properties changing over time. This phenomenon of subtle changes over time is called aging. Generally, after aging, hardness and strength increase, while internal stress decreases. The aging process requires placing the plastic liners in the aging furnace for a certain period of time. The plastic liners need to be rotated continuously in the aging furnace to prevent deformation. This requires a specific plastic liner rotating device. In order to accommodate bottle-shaped or tubular plastic liners of different diameters, the rotating device needs to be able to adjust the spacing between the support rollers to achieve universal load-bearing capacity for plastic liners of different diameters. Currently, the commonly used method is to adjust the spacing through a detachable mechanism. Adjustment requires removing the fixing bolts, adjusting the spacing, and then tightening the bolts again. This method of adjustment and installation is cumbersome, the distance adjustment is inaccurate, and the parallelism between the support rollers needs to be recalibrated each time. The adjustment is very inconvenient, time-consuming, and labor-intensive. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a plastic inner liner rotating device and aging furnace with adjustable spacing, so as to solve the problems of cumbersome adjustment of the spacing of the rollers supporting the plastic inner liner, inaccurate adjustment distance, and the need to recalibrate the parallelism between the supporting rollers each time.

[0004] To solve the above-mentioned technical problems, the technical solution adopted by this utility model is as follows:

[0005] A rotating device for an adjustable-pitch plastic liner includes a fixed base. Parallel fixed and movable rubber-coated rollers are mounted on the fixed base. Both the fixed and movable rollers are rotatably mounted in bearing seats at both ends. Driven by a drive device, the fixed and movable rollers rotate synchronously. The bearing seats at both ends of the fixed roller are fixed to the fixed base. A bracket is coaxially mounted below the movable roller, with both ends fixedly connected to the bearing seats at both ends of the movable roller. The bracket is movably connected to the fixed base, and its middle section, near both ends, radially penetrates through... There are two adjusting screws arranged in parallel. A nut is fixed on the bracket at the through-hole of the adjusting screw, and the adjusting screw passes through the nut. Two transmission devices are fixed on the fixed base at the positions corresponding to the two adjusting screws. The same side end of the two adjusting screws is connected to the output end of the corresponding transmission device. The input end of the two transmission devices is connected to the same rotating shaft. The outer end of the rotating shaft is coaxially connected to the adjusting handwheel. Rotating the adjusting handwheel causes the rotating shaft to drive the two adjusting screws to rotate synchronously through the transmission devices. The nuts sleeved on the two adjusting screws drive the bracket to move horizontally, realizing the horizontal movement of the rubber-coated roller at the top of the bracket.

[0006] In a preferred embodiment, the transmission device includes a housing, inside which are arranged a driving bevel gear and a driven bevel gear that are perpendicular to each other in the axial direction. The tooth surfaces of the driving bevel gear and the driven bevel gear mesh with each other. The driving bevel gear is sleeved on the rotating shaft, and the driven bevel gear is sleeved on one end of the corresponding adjusting screw.

[0007] In a preferred embodiment, the drive device is structured as follows: a first sprocket is fitted on the outer end of one side of the fixed rubber-coated roller, a second sprocket is fitted on the outer end of the same side of the movable rubber-coated roller, a third sprocket is provided on the fixed base, the third sprocket is connected to the motor, the first sprocket, the second sprocket and the third sprocket are arranged in sequence, and a closed chain is fitted on the first sprocket and the third sprocket located on both sides and the second sprocket located in the middle.

[0008] In one preferred embodiment, a horizontal chain pressure plate is provided above the second sprocket, the chain at the top of the second sprocket passes under the plane of the chain pressure plate, and the vertical side of the chain pressure plate extends and is fixed on the bearing seat corresponding to the movable rubber-coated roller.

[0009] In a preferred embodiment, the two end sidewalls of the support at the bottom of the movable rubber-coated roller are respectively close to the opposite inner side of the fixed seat. The two sidewalls of the fixed seat are provided with elongated holes along the horizontal radial direction at opposite ends of the support. Fixing bolts that pass through the elongated holes are respectively provided on the opposite end sidewalls of the support.

[0010] This utility model also provides an aging furnace, which has a plastic inner liner rotating device with adjustable spacing of any of the structures described above.

[0011] The beneficial effects of this utility model are as follows: the adjustable spacing plastic inner liner rotating device is used in the aging furnace. The plastic inner liner is supported by parallel fixed and movable rubber-coating rollers. By adjusting the spacing between the movable and fixed rubber-coating rollers, plastic inner liners of different diameters can be placed. A rotating shaft drives two separate adjusting screws to rotate synchronously, which in turn drives the movable rubber-coating roller to move. This not only makes the moving distance precise and controllable, but also ensures the parallelism between the fixed and movable rubber-coating rollers. The synchronous rotation of the fixed and movable rubber-coating rollers is driven by a chain. The second sprocket at the outer end of the movable rubber-coating roller is located in the middle, while the first sprockets at the outer ends of the fixed rubber-coating rollers on both sides and the third sprocket on the fixed base remain stationary. The chain is sleeved on the first and third sprockets on both sides, and the second sprocket on the movable rubber-coating roller is located in the middle of the chain. This structure ensures that when the motor drives the third sprocket to rotate, thereby driving the chain, the chain can make the fixed rubber-coating roller connected to the first sprocket and the movable rubber-coating roller connected to the second sprocket rotate synchronously. At the same time, it eliminates the need to replace or disassemble the chain when adjusting the roller spacing, which reduces the workload of workers and greatly improves work efficiency. Attached Figure Description

[0012] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings, wherein:

[0013] Fig. 1 This is a schematic diagram of the structure of this utility model;

[0014] Fig. 2 This is a schematic diagram of the structural principle of the transmission device in this utility model;

[0015] Figs. 1-2 Explanation of reference numerals in the attached diagram: 1. Fixed base; 2. Elongated hole; 3. Fixing bolt; 4. Bracket; 5. Transmission device; 6. Rotating shaft; 7. Fixed rubber-coated roller; 8. Moving rubber-coated roller; 9. Adjusting screw; 10. Chain pressure plate; 11. First sprocket; 12. Chain; 13. Adjusting handwheel; 14. Driving bevel gear; 15. Driven bevel gear; 16. Second sprocket; 17. Third sprocket. Detailed Implementation

[0016] The present invention will now be described in detail with reference to the accompanying drawings and specific embodiments.

[0017] This utility model provides an aging furnace and a rotating device for an adjustable-gap plastic inner liner inside the furnace. See [link to relevant documentation]. Figs. 1-2As shown, the device includes a fixed base 1, on which are mounted parallel fixed rubber-coating rollers 7 and movable rubber-coating rollers 8. Both the fixed and movable rubber-coating rollers 7 and 8 are rotatably mounted in bearing seats at both ends. Driven by a drive device, the fixed and movable rubber-coating rollers 7 and 8 can rotate synchronously. The bearing seats at both ends of the fixed rubber-coating roller 7 are fixed to the fixed base 1. A bracket 4 is coaxially mounted below the movable rubber-coating roller 8, with both ends of the bracket 4 fixedly connected to the bearing seats at both ends of the movable rubber-coating roller 8. The bracket 4 is movably connected to the fixed base 1. Adjusting screws 9 are radially threaded through the middle of the bracket 4 near both ends. The lead screws 9 are arranged in parallel. A nut is fixed on the bracket 4 at the through-hole of the lead screw 9. The lead screw 9 is inserted into the nut. Two transmission devices 5 are fixed on the fixed base 1 at the positions corresponding to the two lead screws 9. The same side end of the two lead screws 9 is connected to the output end of the corresponding transmission device 5. The input end of the two transmission devices 5 is connected to the same rotating shaft 6. The outer end of the rotating shaft 6 is coaxially connected to the adjusting handwheel 13. When the adjusting handwheel 13 is rotated, the rotating shaft 6 drives the two lead screws 9 to rotate synchronously through the transmission device 5. The nuts sleeved on the two lead screws 9 drive the bracket 4 to move, thereby realizing the translation of the movable rubber-coated roller 8 at the top of the bracket 4.

[0018] In operation, the plastic inner liner is placed coaxially on the fixed coating roller 7 and the movable coating roller 8. The fixed coating roller 7 and the movable coating roller 8 rotate synchronously, allowing the plastic inner liner to rotate continuously in one direction, resulting in more even heating. One fixed coating roller 7 remains stationary, while the movable coating roller 8 can be adjusted radially to accommodate plastic inner liners of different diameters. To ensure more precise positioning of the movable coating roller 8, two parallel adjusting screws 9 are installed at the bottom of the movable coating roller 8 along the direction of movement. When the two adjusting screws 9 rotate synchronously, they drive the bracket 4 and the movable coating roller 8 to move via corresponding nuts fitted on them. Through the two adjusting screws 9, the movable coating roller 8 can remain parallel to the fixed coating roller 7, providing more even support for the plastic inner liner. The two adjusting screws 9 are driven by a rotating shaft 6 to achieve synchronous rotation. The forward and reverse adjustment handwheel 13 allows the movable coating roller 8 to move closer to or away from the fixed coating roller 7.

[0019] In this embodiment, the transmission device 5 includes a housing, within which are disposed a driving bevel gear 14 and a driven bevel gear 15, which are perpendicular to each other in axis. The tooth surfaces of the driving bevel gear 14 and the driven bevel gear 15 mesh. The driving bevel gear 14 is sleeved on the rotating shaft 6, and the driven bevel gear 15 is sleeved on one end of the corresponding adjusting screw 9. The meshing of the driving bevel gear 14 and the driven bevel gear 15 can change the direction of rotation, resulting in high power transmission efficiency.

[0020] In this embodiment, the drive device is structured as follows: a first sprocket 11 is fitted onto the outer end of one side of the fixed rubber-coating roller 7, a second sprocket 16 is fitted onto the outer end of the same side of the movable rubber-coating roller 8, and a third sprocket 17 is provided on the fixed base 1. The third sprocket 17 is connected to the motor. The first sprocket 11, the second sprocket 16, and the third sprocket 17 are arranged sequentially. A closed chain 12 is fitted onto the first sprocket 11 and the third sprocket 17 located on both sides and the second sprocket 16 located in the middle. The chain 12 is fitted onto the fixed first sprocket 11 and the third sprocket 17 located on both sides. When the second sprocket 16 in the middle moves with the movable rubber-coating roller 8, it can also remain within the middle of the chain 12. In addition, the chain 12 can also drive the fixed rubber-coating roller 7 and the movable rubber-coating roller 8 to rotate synchronously through the first sprocket 11 and the second sprocket 16.

[0021] In this embodiment, a horizontal chain pressure plate 10 is provided above the second sprocket 16. The chain 12 at the top of the second sprocket 16 passes under the plane of the chain pressure plate 10, and the vertical side of the chain pressure plate 10 extends and is fixed to the bearing seat corresponding to the movable rubber-coated roller 8. The second sprocket 16 is located in the middle. When the chain 12 rotates, it is easy to jump off due to insufficient tension. Covering the top of the chain 12 with the chain pressure plate 10 will reduce this phenomenon.

[0022] In this embodiment, the two end sidewalls of the support 4 at the bottom of the movable rubber-coated roller 8 are respectively close to the opposite inner sidewalls of the fixed base 1. The two sidewalls of the fixed base 1 have elongated holes 2 along the horizontal radial direction at opposite ends of the support 4. Fixing bolts 3, which pass through the elongated holes 2, are respectively provided on the opposite end sidewalls of the support 4. When the movable rubber-coated roller 8 needs to be moved, the fixing bolts 3 in the elongated holes 2 at both ends are loosened, and then the adjusting handwheel 13 is rotated. After the movable rubber-coated roller 8 is adjusted to the correct position, the fixing bolts 3 at both ends are tightened to fix the support 4 at the bottom of the movable rubber-coated roller 8.

[0023] The aging furnace described in this utility model includes the adjustable-spacing plastic inner liner rotating device. Properly distributing the plastic inner liner support devices within the aging furnace improves the heat treatment efficiency of the plastic inner liner.

[0024] The working process of this utility model is as follows:

[0025] according to Figs. 1-2 As shown, the plastic inner liner support device is set inside the aging furnace. To adjust the movable rubber-coated roller 8, it is necessary to loosen the fixing bolts 3 at both ends of the bottom bracket 4 of the movable rubber-coated roller 8, rotate the adjusting handwheel 13, and the rotating shaft 6 drives the two adjusting screws 9 to rotate synchronously through the transmission device 5. The bracket 4 and the movable rubber-coated roller 8 are moved horizontally, and the movable rubber-coated roller 8 can remain parallel to the fixed rubber-coated roller 7. After the adjustment is in place, tighten the bolts 3 to complete the horizontal movement of the movable rubber-coated roller 8.

[0026] The cylindrical plastic inner liner is placed coaxially onto the fixed coating roller 7 and the movable coating roller 8. The aging furnace starts heating, and the chain 12 drives the fixed coating roller 7 and the movable coating roller 8 to rotate synchronously, so that the plastic inner liner can undergo heat treatment.

[0027] The above embodiments are merely illustrative of the principles and effects of this utility model, as well as some of its applications, and are not intended to limit this utility model. It should be noted that those skilled in the art can make various modifications and improvements without departing from the inventive concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A rotating device for a plastic inner liner with adjustable spacing, characterized in that, Includes a fixed base (1), on which are mounted parallel fixed rubber-coating rollers (7) and movable rubber-coating rollers (8). Both the fixed rubber-coating rollers (7) and movable rubber-coating rollers (8) are rotatably mounted in bearing seats at both ends. The fixed rubber-coating rollers (7) and movable rubber-coating rollers (8) can rotate synchronously under the drive of the drive device. The bearing seats at both ends of the fixed rubber-coating rollers (7) are fixed on the fixed base (1). A bracket (4) is coaxially mounted below the movable rubber-coating rollers (8). The two ends of the bracket (4) are fixedly connected to the bearing seats at both ends of the movable rubber-coating rollers (8). The bracket (4) is movably connected to the fixed base (1). Adjusting screws (9) are radially inserted through the middle of the bracket (4) near both ends. The two adjusting screws (9) The two screws are arranged in parallel. A nut is fixed on the bracket (4) at the through-hole of the adjusting screw (9). The adjusting screw (9) is inserted into the nut. Two transmission devices (5) are fixed on the fixed seat (1) at the positions corresponding to the two adjusting screws (9). The same side end of the two adjusting screws (9) is connected to the output end of the corresponding transmission device (5). The input end of the two transmission devices (5) is connected to the same rotating shaft (6). The outer end of the rotating shaft (6) is coaxially connected to the adjusting handwheel (13). When the adjusting handwheel (13) is rotated, the rotating shaft (6) drives the two adjusting screws (9) to rotate synchronously through the transmission device (5). The nuts on the two adjusting screws (9) drive the bracket (4) to translate, so as to realize the translation of the moving rubber-coated roller (8) at the top of the bracket (4).

2. The adjustable-spacing plastic inner liner rotating device according to claim 1, characterized in that, The transmission device (5) includes a housing, inside which are arranged an axially perpendicular driving bevel gear (14) and a driven bevel gear (15). The tooth surfaces of the driving bevel gear (14) and the driven bevel gear (15) mesh with each other. The driving bevel gear (14) is sleeved on the rotating shaft (6), and the driven bevel gear (15) is sleeved on one end of the corresponding adjusting screw (9).

3. The adjustable-gap plastic inner liner rotating device according to claim 1 or 2, characterized in that, The structure of the drive device is as follows: a first sprocket (11) is sleeved on the outer end of one side of the fixed rubber-coated roller (7), a second sprocket (16) is sleeved on the outer end of the same side of the movable rubber-coated roller (8), a third sprocket (17) is provided on the fixed seat (1), the third sprocket (17) is connected to the motor, the first sprocket (11), the second sprocket (16) and the third sprocket (17) are arranged in sequence, and a closed chain (12) is sleeved on the first sprocket (11) and the third sprocket (17) located on both sides and the second sprocket (16) located in the middle.

4. The adjustable-gap plastic inner liner rotating device according to claim 3, characterized in that, A horizontal chain pressure plate (10) is provided above the second sprocket (16). The chain (12) at the top of the second sprocket (16) passes under the plane of the chain pressure plate (10). The vertical side of the chain pressure plate (10) is fixed on the bearing seat corresponding to the movable rubber-coated roller (8).

5. The adjustable-gap plastic inner liner rotating device according to claim 1 or 2, characterized in that, The two side walls of the support (4) at the bottom of the movable rubber-coated roller (8) are respectively close to the opposite inner side of the fixed seat (1). The two side walls of the fixed seat (1) are provided with elongated holes (2) along the horizontal radial direction at opposite ends of the support (4). The two side walls of the support (4) are respectively provided with fixing bolts (3) that pass through the elongated holes (2).

6. An aging furnace, characterized in that, The device includes the adjustable plastic liner rotating device according to any one of claims 1-5.

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