Leveling mechanism

Abstract

The utility model belongs to the technical field of PET (polyethylene terephthalate) film processing, and discloses a leveling mechanism which comprises a rack, a winding roller and an unwinding roller, the winding roller and the unwinding roller are rotatably connected to two sides of the rack respectively, and a motor for driving the winding roller to rotate is fixedly connected onto the rack. A first leveling roller and a second leveling roller which are adjustable in distance are arranged in the middle of the rack, movable blocks are rotationally connected to the two sides of the first leveling roller and the two sides of the second leveling roller correspondingly, and limiting blocks are fixedly connected to the two sides of the movable blocks correspondingly. According to the leveling mechanism provided by the utility model, the first leveling roller with a fixed reference is matched with the adjustable second leveling roller driven by the electric push rod, and an inclined plane self-locking structure of the locking assembly is combined, so that the PET films with different thicknesses can be accurately leveled, and in addition, due to the design of one-key type quick disassembly and assembly, the leveling efficiency is greatly improved. The problem that a traditional leveling mechanism is tedious to maintain due to bolt fixation is solved.

Description

Technical Field

[0001] This utility model relates to the field of PET film processing technology, and more specifically, to a leveling mechanism. Background Technology

[0002] In PET film slitting, laminating and packaging material production lines, the leveling mechanism is the core equipment for eliminating film wrinkles and ensuring the flatness of the roll. Its key function is achieved by applying controllable pressure to the film through a pair of horizontally set leveling rollers. The first leveling roller with a fixed reference and the second leveling roller with an adjustable height work together to adapt to the leveling requirements of films of different thicknesses by adjusting the roller spacing. In order to ensure leveling accuracy, the leveling rollers need to have extremely high surface smoothness and form and position tolerances. However, after long-term operation, the roller surface is prone to wear or contamination, and regular disassembly, maintenance or replacement is required.

[0003] The leveling rollers of existing leveling mechanisms are generally designed to be directly locked to the frame with rigid bolts. When the roller body needs to be disassembled, the operator must use tools to disassemble multiple bolt connections one by one. The operation is too cumbersome and complicated. Moreover, the bolts used for a long time under high load often rust and strip, which further increases the difficulty of disassembly. Frequent disassembly and assembly will also cause deformation and wear at the mounting hole position, resulting in deterioration of the positioning accuracy after the roller body is repeatedly installed.

[0004] In view of this, we propose a leveling mechanism. Utility Model Content

[0005] 1. Technical problems to be solved

[0006] The purpose of this utility model is to provide a leveling mechanism to solve the problem mentioned in the background art that the traditional leveling mechanism is very inconvenient when replacing and maintaining the leveling roller.

[0007] 2. Technical Solution

[0008] A leveling mechanism includes a frame and a take-up roller and an unwind roller rotatably connected to both sides of the frame. A motor for driving the take-up roller to rotate is fixedly connected to the frame. A first leveling roller and a second leveling roller with adjustable spacing are provided in the middle of the frame. Movable blocks are rotatably connected to both sides of the first leveling roller and the second leveling roller. Limit blocks are fixedly connected to both sides of the movable blocks. Limiting grooves for sliding of the limit blocks are provided on the frame. An adjustment component and a locking component are provided on the frame.

[0009] An adjustment component is used to adjust the distance between the first leveling roller and the second leveling roller so that the device can be adapted to PET films of different thicknesses.

[0010] The locking assembly is used to limit and fix the adjusting assembly to the limiting blocks on both sides of the second leveling roller.

[0011] Preferably, the adjustment assembly includes a mounting bracket fixedly connected to the frame, a movable plate slidably connected to the mounting bracket, an electric push rod fixedly connected to the mounting bracket, the extended end of the electric push rod being fixedly connected to the movable plate, and locking components provided at both ends of the movable plate.

[0012] Preferably, two slide rods are fixedly connected to the top of the movable plate, and both slide rods pass through the mounting frame.

[0013] Preferably, the locking assembly includes a locking rod fixedly connected to the movable plate, two locking heads elastically connected to the locking rod, and a locking plate fixedly connected to the movable block. The locking plate has a locking groove adapted to the size of the locking rod. A limiting ring is fixedly connected to the locking rod, and the distance between the limiting ring and the locking head is the same as the thickness of the locking plate.

[0014] Preferably, the bottom of the locking head is sloped, and the locking rod has a movable groove for the locking head to move under pressure.

[0015] Preferably, both sides of the locking head are fixedly connected to sliders, the movable groove is provided with a groove that matches the size of the slider, and the two locking heads are elastically connected by a spring.

[0016] Preferably, the first leveling roller is located below the second leveling roller, the top of the limiting groove is open, and the first leveling roller is located at the bottom of the limiting groove, so that the topmost roller surface of the first leveling roller forms a leveling reference surface, so as to adjust the roller spacing by adjusting the height of the second leveling roller in conjunction with the adjusting component.

[0017] 3. Beneficial effects

[0018] Compared with existing technologies, the advantages of this utility model are:

[0019] 1. This utility model fixes the first leveling roller at the bottom of the limiting groove, and its top roller surface forms a stable leveling reference surface. With the help of the adjustment component, the height of the second leveling roller can be precisely controlled. The distance between the two rollers can be flexibly adjusted to adapt to PET films of different thicknesses. This eliminates the problem of reference surface movement that may be caused by the adjustment of the two rollers, and also enables the device to adapt to more PET films of various thicknesses.

[0020] 2. The electric push rod drive of this utility model enables precise adjustment of the roller spacing. Combined with the locking component, it can ensure that the adjusted position is firmly locked. The operation is simple and quick, greatly improving the efficiency of replacing and maintaining the leveling roller.

[0021] 3. This utility model, through the inclined surface of the locking head and the built-in spring, can achieve automatic locking when the locking rod is inserted into the locking groove. Furthermore, the locking head and the limiting ring effectively prevent loosening caused by vibration, thus improving the stability of the device during use. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a three-dimensional structural diagram of the present invention from another angle;

[0024] Figure 3 This is a cross-sectional schematic diagram of the frame of this utility model;

[0025] Figure 4 This is an exploded view of the locking rod and locking plate of this utility model;

[0026] Figure 5 This is a cross-sectional view of the locking rod of this utility model.

[0027] The following are the labels in the diagram: 1. Frame; 11. Take-up roller; 12. Unwind roller; 13. First leveling roller; 14. Second leveling roller; 15. Movable block; 16. Limiting block; 17. Limiting groove; 18. Motor; 2. Adjustment assembly; 21. Mounting frame; 22. Movable plate; 23. Slide rod; 24. Electric push rod; 3. Locking assembly; 31. Locking rod; 32. Locking head; 33. Locking plate; 331. Locking groove; 34. Movable groove; 35. Slider; 36. Slide groove; 37. Spring; 38. Limiting ring. Detailed Implementation

[0028] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0029] In the description of this utility model, "multiple" means two or more, unless otherwise explicitly specified.

[0030] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within 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.

[0031] Please see Figure 1-5 This utility model provides a technical solution:

[0032] A leveling mechanism includes a frame 1 and a take-up roller 11 and an unwind roller 12 rotatably connected to both sides of the frame 1. A motor 18 for driving the take-up roller 11 to rotate is fixedly connected to the frame 1. A first leveling roller 13 and a second leveling roller 14 with adjustable spacing are arranged in the middle of the frame 1. Movable blocks 15 are rotatably connected to both sides of the first leveling roller 13 and the second leveling roller 14. Limiting blocks 16 are fixedly connected to both sides of the movable blocks 15. Limiting grooves for sliding of the limiting blocks 16 are provided on the frame 1. 17. The frame 1 is provided with an adjustment component 2 and a locking component 3; the adjustment component 2 is used to adjust the distance between the first leveling roller 13 and the second leveling roller 14 so that the device can adapt to PET films of different thicknesses; the locking component 3 is used to limit and fix the adjustment component 2 and the limiting blocks 16 on both sides of the second leveling roller 14. Simply put, during operation, the take-up roller 11 can take up the PET film released by the unwinding roller 12, and the PET film can be flattened by the two leveling rollers in the middle of the frame 1.

[0033] Specifically, the adjustment assembly 2 includes a mounting frame 21 fixedly connected to the frame 1, a movable plate 22 slidably connected to the mounting frame 21, an electric push rod 24 fixedly connected to the mounting frame 21, the extended end of the electric push rod 24 fixedly connected to the movable plate 22, and locking assemblies 3 provided at both ends of the movable plate 22. With this configuration, the electric push rod 24 directly drives the movable plate 22 to stably rise and fall on the mounting frame 21, providing a precise and easy-to-operate control method for adjusting the height of the second leveling roller 14. At the same time, the movable plate 22 serves as a connection point to support the locking assembly 3 to fix the position of the second leveling roller 14.

[0034] Furthermore, two slide rods 23 are fixedly connected to the top of the movable plate 22. Both slide rods 23 are set through the mounting frame 21. This arrangement provides a stable and reliable linear guide for the up and down movement of the movable plate 22 through the connection between the slide rods 23 and the mounting frame 21, effectively preventing swaying or shaking during the adjustment process and ensuring the smoothness and accuracy of height adjustment.

[0035] In addition, the locking assembly 3 includes a locking rod 31 fixedly connected to the movable plate 22, two locking heads 32 elastically connected to the locking rod 31, and a locking plate 33 fixedly connected to the movable block 15. The locking plate 33 has a locking groove 331 that matches the size of the locking rod 31. A limiting ring 38 is fixedly connected to the locking rod 31. The distance between the limiting ring 38 and the locking head 32 is the same as the thickness of the locking plate 33. With this configuration, the locking rod 31 is inserted into the locking groove 331 to achieve connection, and the elastic locking head 32 achieves automatic locking. At the same time, the limiting ring 38 ensures that the locking plate 33 is firmly clamped between the limiting ring 38 and the locking head 32 when locking, effectively preventing axial movement and loosening of the connection caused by equipment vibration, and further enhancing the stability and accuracy of the device.

[0036] Secondly, the bottom of the locking head 32 is set with an inclined surface, and the locking rod 31 is provided with a movable groove 34 for the locking head 32 to move under pressure. This design allows the locking head 32 to be automatically retracted into the movable groove 34 when it contacts the edge of the groove during the insertion of the locking groove 331, so that the locking rod 31 can slide smoothly into place. Once the locking rod 31 is fully inserted, the locking head 32 will quickly pop out under the action of the spring 37 and lock into the inner wall of the locking groove 331, achieving efficient and convenient automatic locking.

[0037] Furthermore, sliders 35 are fixedly connected to both sides of the locking head 32. A sliding groove 36 adapted to the size of the slider 35 is opened in the movable groove 34. The two locking heads 32 are elastically connected by springs 37. This setting can ensure the stability of the movement of the locking block and prevent it from jamming or deviating. The setting of springs 37 ensures that the locking heads 32 can retract stably and cooperatively when pressed, and provide sufficient and consistent elastic restoring force to achieve locking after the pressure is released.

[0038] In addition, the first leveling roller 13 is located below the second leveling roller 14, with the top opening of the limiting groove 17 and the first leveling roller 13 located at the bottom of the limiting groove 17. This makes the topmost roller surface of the first leveling roller 13 form a leveling reference surface, which is used to adjust the height of the second leveling roller 14 in conjunction with the adjusting component 2 to adjust the roller spacing. With this configuration, the first leveling roller 13 is fixed to the bottom of the limiting groove 17, making its top roller surface a stable and accurate leveling reference surface. The roller spacing can be changed simply by adjusting the height of the second leveling roller 14, reducing the problem of errors caused by asynchronous adjustment of the two rollers or unstable reference. This allows films of different thicknesses to obtain a stable and accurate leveling effect, simplifying the operation and improving the leveling quality.

[0039] Working principle:

[0040] When the equipment is running, the PET film is drawn out by the unwinding roller and first enters and passes through the gap formed between the first leveling roller fixed below and the second leveling roller that has been precisely adjusted and locked in place above. Under the action of the locking component and the adjusting component, the second leveling roller maintains the set height and stable parallelism. When the film passes through this precisely controlled gap, it is subjected to appropriate and uniform pressure applied by the two rollers to perform a leveling operation. The leveled film is drawn out and wound and collected by the motor-driven winding roller.

[0041] When disassembling the leveling roller, press the two locking heads on the same locking rod to release the locking heads from the locking plate. Then, raise the extended end of the electric push rod to move the two locking rods out of the locking groove. Then, remove the first leveling roller and the second leveling roller from the limiting groove.

[0042] When installing the leveling roller, the movable plate synchronously drives the locking rods fixed at both ends to move downwards. The bottom of the locking rod aligns with the locking plate on the movable block, pressing the locking rod into the locking groove. During the insertion process, the inclined surface at the bottom of the locking head is pressed, pushing the locking head to overcome the spring force and retract along the slide groove into the movable groove through the slider until the locking rod is fully in place. At this time, the locking head loses its constraint and pops outward under the action of the spring, locking the inner wall of the locking groove to achieve automatic locking. At the same time, the limit ring and the locking head tightly clamp the locking plate to prevent axial movement.

[0043] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A leveling mechanism, characterized in that: The machine includes a frame (1) and a take-up roller (11) and an unwind roller (12) rotatably connected to both sides of the frame (1). A motor (18) for driving the take-up roller (11) to rotate is fixedly connected to the frame (1). A first leveling roller (13) and a second leveling roller (14) with adjustable spacing are provided in the middle of the frame (1). Movable blocks (15) are rotatably connected to both sides of the first leveling roller (13) and the second leveling roller (14). Limiting blocks (16) are fixedly connected to both sides of the movable blocks (15). A limiting groove (17) for sliding of the limiting blocks (16) is provided on the frame (1). An adjustment component (2) and a locking component (3) are provided on the frame (1). Adjustment component (2), which is used to adjust the distance between the first leveling roller (13) and the second leveling roller (14) so ​​that the device can be adapted to PET films of different thicknesses; The locking assembly (3) is used to limit and fix the adjusting assembly (2) to the limiting blocks (16) on both sides of the second leveling roller (14).

2. The leveling mechanism according to claim 1, characterized in that: The adjustment component (2) includes a mounting bracket (21) fixedly connected to the frame (1), a movable plate (22) slidably connected to the mounting bracket (21), an electric push rod (24) fixedly connected to the mounting bracket (21), the extended end of the electric push rod (24) being fixedly connected to the movable plate (22), and locking components (3) provided at both ends of the movable plate (22).

3. A leveling mechanism according to claim 2, characterized in that: The top of the movable plate (22) is fixedly connected to two slide rods (23), both of which pass through the mounting frame (21).

4. A leveling mechanism according to claim 2, characterized in that: The locking assembly (3) includes a locking rod (31) fixedly connected to the movable plate (22), two locking heads (32) elastically connected to the locking rod (31), and a locking plate (33) fixedly connected to the movable block (15). The locking plate (33) has a locking groove (331) adapted to the size of the locking rod (31). A limiting ring (38) is fixedly connected to the locking rod (31). The distance between the limiting ring (38) and the locking head (32) is the same as the thickness of the locking plate (33).

5. A leveling mechanism according to claim 4, characterized in that: The bottom of the locking head (32) is inclined, and the locking rod (31) is provided with a movable groove (34) for the locking head (32) to move under pressure.

6. A leveling mechanism according to claim 5, characterized in that: Both sides of the locking head (32) are fixedly connected to sliders (35), and the movable groove (34) is provided with a sliding groove (36) that matches the size of the slider (35). The two locking heads (32) are elastically connected by springs (37).

7. A leveling mechanism according to claim 1, characterized in that: The first leveling roller (13) is located below the second leveling roller (14), and the top opening of the limiting groove (17) is provided. The first leveling roller (13) is located at the bottom of the limiting groove (17), so that the topmost roller surface of the first leveling roller (13) forms a leveling reference surface, so as to cooperate with the adjustment component (2) to adjust the height of the second leveling roller (14) to adjust the roller spacing.

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