A polyester film unwinding reel adjustable mechanism

Abstract

This utility model relates to an adjustable mechanism for a polyester film unwinding drum, including a collar frame, a drum body, and an inner wall support mechanism. A drum body is rotatably installed within each of the two collar frames. The inner wall support mechanism is installed on the surface of the drum body and is used to support the contact of the inner walls of unwinding drums with different inner diameters. The two drum bodies are positioned on opposite sides of a take-up drum. Three sleeves on one side of the drum body are inserted into the take-up drum. By holding the handle and using a tool to rotate the adjustment part, the threaded rod is driven to rotate. The rotation of the threaded rod within the drum body drives the drive ring to move closer to the sleeve frame, causing the three push rods to swing, thereby pushing the three push tubes to move synchronously. The push tubes move within the sleeve frame, which guides the movement of the push tubes. Simultaneously, the three sleeve frames are sealed to prevent dust from entering the drum body and protect the threaded rod. The sleeve ends are provided with arc-shaped seats, which can deform and fit more tightly against the inner wall of the unwinding drum, increasing friction.

Description

Technical Field

[0001] This utility model relates to the field of unwinding technology, specifically to an adjustable mechanism for unwinding polyester film. Background Technology

[0002] In the production, processing and use of polyester film, the unwinding drum is one of the key pieces of equipment, responsible for smoothly and continuously unwinding the rolled polyester film. The inner diameter of the unwinding drum varies depending on factors such as the manufacturing process and material thickness. Traditional unwinding drum mechanisms often can only provide support for a fixed inner diameter and cannot adapt to unwinding drums with different inner diameters.

[0003] For example, the authorized patent document with application number CN202122885887.5 discloses a wide polyester film sheet winding machine. The motor is fixedly connected to a horizontal plate and a fixed plate. The other end of the rotating shaft is provided with a rotating structure for placing multiple winding drums. The rotating structure is provided with an installation structure for easy disassembly and installation of the winding drums. In the above structure, when winding and unwinding the unwinding drum, it is impossible to support drums with different inner diameters. That is, the unwinding drum mechanism mentioned above can often only provide support for a fixed inner diameter and cannot adapt to unwinding drums with different inner diameters. This may lead to problems such as drum shaking and eccentricity during the unwinding process, affecting the stability of unwinding and the quality of the film. Therefore, we need to provide an adjustable polyester film unwinding drum mechanism. Utility Model Content

[0004] The purpose of this utility model is to provide an adjustable mechanism for polyester film unwinding drum. An inner wall support mechanism is set inside the drum, and the push tube is driven to extend and retract by the adjustment component. It can accurately adapt to winding drums with different inner diameters, which significantly improves the versatility of the equipment. The rubber arc-shaped seat of the contact part is tightly fitted with the inner wall of the winding drum. Its high friction characteristics can effectively prevent the winding drum from slipping or deviating during rotation, thus solving the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution: an adjustable polyester film unwinding mechanism, comprising: The components include a collar frame, a barrel body, and an inner wall support mechanism. The barrel body is rotatably installed inside both collar frames. The inner wall support mechanism is installed on the surface of the barrel body and is used to provide abutment support against the inner wall of the unwinding drum with different inner diameters. The inner wall support mechanism includes a sleeve, a push tube, an adjusting component, and a contact part. The three sleeves are all fixed to one side of the barrel body, and the push tube is slidably installed inside. An adjusting component for synchronous expansion or contraction of the three push tubes is installed inside the barrel body. Each of the three push tubes has a contact part at one opposite end, and the contact part is detachably installed at the end of the push tube.

[0006] Preferably, the adjusting component includes a threaded rod, a drive ring, a push rod, and a reserved groove. The threaded rod is rotatably installed inside the barrel, and the drive ring is threaded on its surface. Each of the three push tubes has a push rod hinged to one side, and one end of each of the three push rods is hinged to a groove on the surface of the drive ring. The surface of the barrel has a reserved groove for the movement of the push rod, and the reserved groove is connected to the sleeve frame.

[0007] Preferably, the contact part includes a socket, a column and an abutment plate, the end of the push tube is provided with a socket for threaded installation of the column, and an abutment plate is fixedly installed at one end of the column.

[0008] Preferably, an arc-shaped seat is fixedly installed on the side of the contact plate away from the column, the arc-shaped seat is configured as an adhesive layer seat, and an adhesive layer ring is fixedly installed on the surface of the column.

[0009] Preferably, one end of the threaded rod passes through one side of the barrel and is fixedly installed with an adjustment part, and a handrail is fixedly installed on one side of the barrel.

[0010] Preferably, a rubber sleeve is fixedly installed on the surface of the barrel for contact with the external drive wheel to drive the barrel to rotate.

[0011] Preferably, it also includes an adjustment mechanism for adjusting the two collar frames to move closer to or further apart from each other.

[0012] Compared with the prior art, the beneficial effects of this utility model are: This utility model features an inner wall support mechanism within the barrel. By adjusting the push tube to extend and retract, it can precisely adapt to winding drums with different inner diameters, effectively solving the problem of the narrow applicability of traditional fixed-size support devices and significantly improving the versatility of the equipment. The rubber arc-shaped seat at the contact part fits tightly against the inner wall of the winding drum, and its high friction characteristics can effectively prevent the winding drum from slipping or shifting during rotation. Attached Figure Description

[0013] Figure 1 This is a three-dimensional structural schematic diagram of the present invention; Figure 2 This is an exploded perspective view of the structure of this utility model; Figure 3 This is a perspective view of the rubber sleeve separated from the barrel body of this utility model; Figure 4 This is a three-dimensional sectional view of the barrel body of this utility model; Figure 5 This is a three-dimensional separation diagram of the contact part of this utility model.

[0014] In the diagram: 1. Ring frame; 2. Barrel body; 3. Inner wall support mechanism; 31. Sleeve frame; 32. Push tube; 33. Adjusting component; 331. Threaded rod; 332. Drive ring; 333. Push rod; 334. Reserved groove; 34. Contact part; 341. Insertion hole; 342. Column; 343. Abutment plate; 4. Arc-shaped seat; 5. Rubber layer ring; 6. Rubber sleeve. Detailed Implementation

[0015] 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.

[0016] Please see Figure 1-5 This utility model provides a technical solution: an adjustable polyester film unwinding mechanism, comprising: The components include a collar frame 1, a barrel body 2, and an inner wall support mechanism 3. The barrel body 2 is rotatably installed inside both collar frames 1. The inner wall support mechanism 3 is installed on the surface of the barrel body 2 and is used to provide resistance to the inner wall of the unwinding drum with different inner diameters. The inner wall support mechanism 3 includes a sleeve 31, a push tube 32, an adjusting component 33, and a contact part 34. The three sleeves 31 are all fixed on one side of the barrel body 2, and the push tube 32 is slidably installed inside. The barrel body 2 is equipped with an adjusting component 33 for the synchronous expansion or contraction of the three push tubes 32. The three push tubes 32 are provided with a contact part 34 at opposite ends. The contact part 34 is detachably installed at the end of the push tube 32. Specifically, an inner wall support mechanism 3 is provided inside the barrel 2 to support winding drums of different inner diameters. A contact part 34 is provided to fit against the inner wall of the winding drum. The rubber arc-shaped seat 4 in the contact part 34 increases the friction between it and the winding drum. At the same time, the rubber arc-shaped seat 4 can be easily replaced and is suitable for use with winding drums of different lengths.

[0017] The adjusting component 33 includes a threaded rod 331, a drive ring 332, a push rod 333, and a reserved groove 334. The threaded rod 331 is rotatably installed inside the barrel body 2, and the drive ring 332 is threaded on its surface. Each of the three push tubes 32 is hinged to one side with a push rod 333, and one end of each of the three push rods 333 is hinged to a groove on the surface of the drive ring 332. A reserved groove 334 for the movement of the push rods 333 is opened on the surface of the barrel body 2, and the reserved groove 334 is connected to the sleeve frame 31. Furthermore, by rotating the threaded rod 331 through the operating adjustment unit, the drive ring 332 moves axially along the threaded rod 331, thereby causing the push rod 333 to swing and push the push tube 32 to slide synchronously within the sleeve frame 31. The synchronous adjustment of the three push tubes 32 is achieved through a single power input, ensuring uniform support for the inner wall of the unwinding drum. The reserved groove 334 provides space for the push rod 333 to move, while the sleeve frame 31 is sealed to prevent dust from entering the drum 2 and protect the transmission components.

[0018] The contact part 34 includes a socket 341, a column 342 and a contact plate 343. The end of the push tube 32 is provided with a socket 341 for threaded installation of the column 342, and the contact plate 343 is fixedly installed at one end of the column 342. It is worth noting that the rotating contact plate 343 drives the column 342 to rotate, and the column 342 is disassembled or installed by engaging with the insertion hole 341 through the thread. The contact part 34 can be quickly replaced, which facilitates the maintenance of the worn arc-shaped seat 4. The threaded connection provides a stable mechanical fixation to ensure that the contact plate 343 does not loosen during operation.

[0019] An arc-shaped seat 4 is fixedly installed on the side of the contact plate 343 away from the column 342. The arc-shaped seat 4 is set as an adhesive layer seat. An adhesive layer ring 5 is fixedly installed on the surface of the column 342. It should be noted that the arc-shaped seat 4 undergoes elastic deformation when it comes into contact with the inner wall of the unwinding drum, which increases the contact area; the rubber ring 5 is pressed against the inner wall of the insertion hole 341 when the column 342 is installed, and the arc-shaped seat 4 achieves a tight fit with the inner wall of different inner diameters through deformation, and the rubber material increases friction to prevent slippage; the rubber ring 5 provides a seal to prevent dust from entering the threaded connection part and extend the service life.

[0020] One end of the threaded rod 331 passes through one side of the barrel body 2 and is fixedly installed with an adjustment part, and a handrail is fixedly installed on one side of the barrel body 2; Furthermore, the operator holds the handle and fixes the barrel 2, and uses a tool to rotate the adjustment part to drive the threaded rod 331 to rotate. The ergonomic design improves the ease of operation. The coordinated design of the handle and the adjustment part allows a single person to complete the adjustment of the support mechanism, improving work efficiency.

[0021] A rubber sleeve 6 is fixedly installed on the surface of the barrel 2 for contacting with the external drive wheel to drive the barrel 2 to rotate. The external drive wheel contacts the rubber sleeve 6 and transmits torque. The rubber sleeve 6 drives the drum 2 to rotate through the cooperation of the slot and the block. The rubber sleeve 6 provides flexible transmission to reduce vibration and noise. The inner wall of the rubber sleeve 6 has a slot that matches the block on the surface of the drum 2 to ensure that the rubber sleeve 6 and the drum 2 move synchronously. The mechanical locking of the slot and the block ensures reliable power transmission, avoids slippage, and achieves stable rotation of the unwinding drum.

[0022] It also includes an adjustment mechanism, which is used to adjust the two collar frames 1 to move closer to or further apart from each other; In this application, the adjustment mechanism includes a base plate, a groove, a slide rod, a support plate, and a limiting bolt. The groove is opened inside the base plate, and a slide rod is fixedly installed inside. Both collar frames 1 slide on the slide rod, and a support plate is fixedly installed on the collar frame 1. A limiting bolt is installed in the thread of the support plate. The bottom of the limiting bolt abuts against the top of the base plate to fix the collar frame 1. The distance between the two collar frames 1 can be adjusted. Furthermore, the collar frame 1 and the barrel body 2 are rotatably connected by bearings.

[0023] The threaded connections involved in this application all have a self-locking function and are coated with an anti-rust coating, which is a conventional technical means in this field. At the same time, the threaded connections...

[0024] This device places two barrels 2 on either side of the take-up drum. Three sleeves on one side of each barrel 2 are inserted into the take-up drum. By holding the handle and using a tool to rotate the adjusting part, the threaded rod 331 rotates. The rotation of the threaded rod 331 within the barrel 2 causes the drive ring 332 to move closer to the sleeve frame 31, causing the three push rods 333 to swing. This, in turn, pushes the three push tubes 32 to move synchronously. The push tubes 32 move within the sleeve frame 31, which guides the movement of the push tubes 32. Simultaneously, the three sleeve frames 31 are sealed together to prevent dust from entering the barrel 2 and to protect the threaded rod 331. The sleeve ends are equipped with arc-shaped seats 4, which are deformable and fit more tightly against the inner wall of the unwinding drum, increasing friction. 4. Installed on the contact plate 343, the column 342 can be rotated by rotating the contact plate 343. The column 342 is threaded into the insertion hole 341. The contact plate 343 can be replaced. During installation, the column 342 is threaded into the insertion hole 341. The rubber ring 5 on the surface of the column 342 will squeeze the end of the sleeve to provide a sealing effect. A rubber sleeve 6 is installed on the outer surface of the barrel 2. The rubber sleeve 6 is in contact with the external drive wheel to realize the rotation of the barrel 2 in the collar frame 1, thereby driving the winding drum to rotate and wind up the polyester film. The inner wall of the rubber sleeve 6 is provided with a groove that matches the locking block on the surface of the barrel 2 to ensure that the rubber sleeve 6 and the barrel 2 move synchronously. The distance between the two collar frames 1 can be adjusted by the adjustment mechanism to adapt to winding drums of different lengths.

[0025] 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. An adjustable mechanism for unwinding a polyester film roll, characterized in that, include: The ring frame (1), the barrel (2), and the inner wall support mechanism (3) are provided. The barrel (2) is rotatably installed in both ring frames (1). The inner wall support mechanism (3) is installed on the surface of the barrel (2) and is used to support the inner wall of the unwinding drum with different inner diameters. The inner wall support mechanism (3) includes a sleeve (31), a push tube (32), an adjusting component (33), and a contact part (34). The three sleeves (31) are all fixed on one side of the barrel (2), and the push tube (32) is slidably installed inside. The barrel (2) is equipped with an adjusting component (33) for the synchronous expansion or contraction of the three push tubes (32). The three push tubes (32) are provided with a contact part (34) at opposite ends. The contact part (34) is detachably installed at the end of the push tube (32).

2. The adjustable polyester film unwinding mechanism according to claim 1, characterized in that: The adjusting component (33) includes a threaded rod (331), a drive ring (332), a push rod (333), and a reserved groove (334). The threaded rod (331) is rotatably installed inside the barrel body (2), and the drive ring (332) is threaded on its surface. Each of the three push tubes (32) is hinged to a push rod (333) on one side. One end of each of the three push rods (333) is hinged to a groove on the surface of the drive ring (332). A reserved groove (334) for the movement of the push rod (333) is opened on the surface of the barrel body (2). The reserved groove (334) is connected to the sleeve frame (31).

3. The adjustable polyester film unwinding mechanism according to claim 1, characterized in that: The contact part (34) includes a socket (341), a column (342) and a contact plate (343). The end of the push tube (32) is provided with a socket (341) for threaded installation of the column (342), and a contact plate (343) is fixedly installed at one end of the column (342).

4. The adjustable polyester film unwinding mechanism according to claim 3, characterized in that: An arc-shaped seat (4) is fixedly installed on the side of the contact plate (343) away from the column (342). The arc-shaped seat (4) is configured as an adhesive layer seat. An adhesive layer ring (5) is fixedly installed on the surface of the column (342).

5. The adjustable polyester film unwinding mechanism according to claim 2, characterized in that: One end of the threaded rod (331) passes through one side of the barrel body (2) and is fixedly installed with an adjustment part, and a handrail is fixedly installed on one side of the barrel body (2).

6. The adjustable polyester film unwinding mechanism according to claim 1, characterized in that: A rubber sleeve (6) is fixedly installed on the surface of the barrel (2) for fitting with the external drive wheel and driving the barrel (2) to rotate.

7. The adjustable polyester film unwinding mechanism according to claim 1, characterized in that: It also includes an adjustment mechanism for adjusting the two collar frames (1) to move closer to or further apart from each other.

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