Corrugating device for a blown film machine with a regulating mechanism
By introducing an adjustment mechanism into the embossing device of the blown film machine, the problems of unstable mold entry pressure and inability to adjust the pattern depth were solved, achieving stable and adjustable mold entry pressure and pattern depth adjustment, thus improving the quality of the finished plastic film.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- LANGFANG ZHONGFENG MECHANICAL TECH CO LTD
- Filing Date
- 2025-06-06
- Publication Date
- 2026-06-09
AI Technical Summary
In existing blown film embossing devices, the air pressure fluctuations of the cylinder-controlled pressure roller and anilox roller cause unstable mold entry pressure, resulting in uneven depth of plastic film patterns, and the pressure cannot be adjusted as needed.
An adjustment mechanism is adopted, which consists of a slider bearing seat, an adjustment clamp, and a screw to finely adjust the distance between the pressure roller and the anilox roller, ensuring stable mold entry pressure and adjustable pattern depth.
This technology allows for adjustment of the depth of patterns or pits on the plastic film as needed, while maintaining a stable injection pressure, thus improving the quality of the finished product.
Smart Images
Figure CN224335046U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to a blown film machine component, specifically a blown film machine embossing device with an adjustment mechanism. Background Technology
[0002] Chinese utility model patent CN203888204U discloses an embossing device for a blown film machine. It includes two or more sets of pressure rollers and anilox rollers. In each set, the anilox roller is rotatably mounted at the bottom end of a longitudinal groove on the frame. Both ends of the pressure roller in each set are mounted in the longitudinal groove of the frame via movable bearing seats, which are connected to the bottom end of the piston rod of a cylinder. The pressure rollers and anilox rollers are positioned vertically opposite each other. Driven by the cylinder, the movable bearing seats can cause the pressure rollers to contact or separate from the anilox rollers. During operation, the plastic film blown by the blown film machine passes between the pressure rollers and the anilox rollers. Then, the controller controls the cylinder to drive the pressure rollers down onto the surface of the anilox rollers, thus embossing the plastic film using this set of pressure rollers and anilox rollers, producing an embossed plastic film.
[0003] However, the aforementioned device has certain drawbacks: Using a cylinder to control the contact between the pressure roller and the anilox roller to apply molding pressure to the plastic film, the cylinder pressure typically fluctuates naturally during actual operation due to factors such as the characteristics of the air supply, pipeline resistance, and dynamic response. This natural fluctuation affects the cylinder's positioning accuracy, thus making it impossible to guarantee a stable and consistent molding pressure on the plastic film. Fluctuations in molding pressure result in uneven depth of patterns or pits embossed on the plastic film, leading to a poor feel and lower quality of the finished product.
[0004] Based on this, an embossing device for a blown film machine was designed, which adjusts the pressure roller and the anilox roller from being vertically aligned to being horizontally side by side: the position of the anilox roller is relatively fixed, and the pressure roller is assembled in the longitudinal groove of the frame through a slider-type bearing seat. When the pressure roller moves to the bottom of the longitudinal groove, the pressure roller and the anilox roller are set horizontally side by side. Instead of using a drive component (cylinder) to apply downward pressure to the pressure roller to provide the mold entry pressure, the frame provides lateral support to limit the horizontal position of the pressure roller, so that the axial distance between the pressure roller and the anilox roller is always fixed, ensuring that a stable mold entry pressure can always be applied to the plastic film.
[0005] However, the above device still has certain defects: the distance between the axis of the pressure roller and the anilox roller is always fixed. Although this ensures a relatively stable mold entry pressure, the mold entry pressure cannot be adjusted as needed, which means that the depth of the patterns or pits pressed on the plastic film cannot be adjusted as needed. Utility Model Content
[0006] To address the aforementioned shortcomings in the existing technology, this utility model aims to provide a blown film embossing device with an adjustment mechanism, so as to achieve the purpose of adjusting the depth of patterns or pits on the plastic film.
[0007] To achieve the above objectives, the technical solution adopted by this utility model is as follows: A blown film machine embossing device with an adjustment mechanism includes a frame and at least one set of embossing components mounted on the frame. The embossing components include a movable pressure roller and an embossing roller. The two ends of the movable pressure roller are mounted in the longitudinal groove of the frame through slider-type bearing seats. The two ends of the embossing roller are rotatably mounted on one side of the longitudinal groove. The device also includes a driving component for controlling the slider-type bearing seats to rise and fall in the longitudinal groove. During embossing, the movable pressure roller and the embossing roller are arranged horizontally side by side.
[0008] An adjustment mechanism is provided between the bearing housing and the longitudinal slide groove. The adjustment mechanism includes an adjustment clamp block movably disposed on one side of the longitudinal slide groove. The bearing housing is disposed between the adjustment clamp block and the other side of the longitudinal slide groove. The adjustment mechanism also includes a stroke component. The stroke component includes a fixed part fixed on the frame and an adjustment part slidably disposed on the fixed part in the horizontal direction. The side of the adjustment clamp block away from the bearing housing abuts against the adjustment part. The horizontal position of the adjustment clamp block is changed by changing the position of the adjustment part.
[0009] As a limitation of this utility model: the fixing part includes a fixing block fixed on the frame, and the adjusting part includes a screw threaded through the fixing block in a horizontal direction.
[0010] As a limitation of this utility model: the end of the screw away from the adjusting clamp is provided with a screwing part for rotating the screw.
[0011] As a limitation of this utility model: two or more fixing blocks are provided along the thickness direction of the bearing seat, and each fixing block is provided with a screw and a screwing part.
[0012] As a limitation of this utility model: the adjusting clamp is arranged longitudinally and parallel to the longitudinal slide groove.
[0013] As a limitation of this utility model: the fixing blocks are arranged longitudinally, and each fixing block has two or more longitudinally arranged screws threaded through it.
[0014] As a limitation of this utility model: the adjusting clamp has a longitudinally arranged guide protrusion or guide recess on the side facing the bearing seat, and the bearing seat has a longitudinally arranged guide recess or guide protrusion on the side facing the adjusting clamp.
[0015] As a limitation of this utility model: the driving component includes a cylinder mounted on the frame, and the piston rod of the cylinder extends into the top of the longitudinal slide groove and is connected to the slider-type bearing seat.
[0016] As a limitation of this utility model: the outer peripheral surface of the embossing roller has a textured surface or a raised dot pattern, and the outer peripheral surface of the movable pressure roller is a rubber layer.
[0017] By adopting the above technical solution, the beneficial effects achieved by this utility model compared with the prior art are as follows:
[0018] This invention features an adjustment mechanism between the bearing housing and the longitudinal slide groove. The sliding bearing housing is slidably positioned between the longitudinal slide groove and the adjusting clamp of the adjustment mechanism. The horizontal position of the adjusting clamp is finely adjusted by the stroke component, thereby finely adjusting the horizontal position of the adjusting bearing housing. Since the movable pressure roller and the embossing roller are arranged side by side, when the horizontal position of the bearing housing is finely adjusted, the distance between the movable pressure roller and the embossing roller is also finely adjusted, thereby achieving the adjustment of the mold entry pressure and thus achieving the purpose of adjusting the depth of the pattern or pit on the plastic film. Since the above adjustments are all fine adjustments, it is possible to adjust the relatively stable mold entry pressure while ensuring that the mold entry pressure is relatively stable.
[0019] In summary, this utility model achieves adjustment of the mold entry pressure through an adjustment mechanism, thereby enabling adjustment of the depth of patterns or pits on the plastic film, and is suitable for embossing in blown film machines. Attached Figure Description
[0020] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.
[0021] Figure 1 This is a schematic diagram of the structure of an embodiment of the present utility model;
[0022] Figure 2 This is a structural schematic diagram from another angle of an embodiment of the present utility model;
[0023] Figure 3 for Figure 2 Enlarged view of part A in the middle.
[0024] In the diagram: 1-frame, 2-longitudinal chute, 3-movable pressure roller, 4-embossing roller, 5-bearing seat, 6-cylinder, 7-adjusting clamp, 8-fixed block, 9-screw, 10-twisting part. Detailed Implementation
[0025] The preferred embodiments of the present invention will be described below with reference to the accompanying drawings. It should be understood that the blown film embossing device with an adjustment mechanism described herein is a preferred embodiment and is only used for illustration and explanation of the present invention, and does not constitute a limitation thereof.
[0026] The directional terms or positional relationships used in this utility model, such as "up," "down," "left," and "right," are based on the positional relationships in the accompanying drawings of this utility model. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or component must have a specific orientation, or that it must be constructed and operated in a specific orientation. Therefore, they should not be construed as limiting the content protected by this utility model.
[0027] This implementation example Figures 1-3 The image shows an embossing device for a blown film machine with an adjustment mechanism, comprising a frame 1 and at least one embossing assembly mounted on the frame 1. The frame 1 is a conventional plate structure, comprising two mirror-symmetrical plates, each plate having a longitudinal groove 2, the two longitudinal grooves 2 being mirror-symmetrical. The embossing assembly includes a movable pressure roller 3 and an embossing roller 4, both of which are conventional structures. The movable pressure roller 3 has a rubber layer covering its outer surface, while the embossing roller 4 is made of metal and has a textured surface or raised dots on its outer surface.
[0028] Furthermore, both ends of the movable pressure roller 3 are mounted in the two longitudinal grooves 2 of the frame 1 via sliding block bearing seats 5, and both ends of the embossing roller 4 are rotatably mounted on the two plates of the frame 1 via bearing seats 5, and are located on one side of the bottom of the longitudinal grooves 2. This embodiment also includes a drive component for controlling the lifting and lowering of the sliding block bearing seats 5 in the longitudinal grooves 2. In this embodiment, the drive component is a cylinder 6, but other linear actuators can also be selected depending on the situation, such as linear motors, electric telescopic rods, motor-screw coupling structures, etc. Figure 1 , Figure 2 As shown, cylinder 6 is mounted on frame 1 via a mounting plate, located at the top of longitudinal slide groove 2, with the piston rod of cylinder 6 extending vertically downwards into longitudinal slide groove 2 from the top. The piston rod of cylinder 6 is connected to slider-type bearing seat 5. By controlling the extension and retraction of cylinder 6, the slider-type bearing seat 5 can be raised and lowered within longitudinal slide groove 2, thereby controlling the raising and lowering of movable pressure roller 3. In actual operation, by controlling the movable pressure roller 3 to rise, it separates from the embossing roller 4, allowing for film threading; by controlling the movable pressure roller 3 to descend to the bottom of longitudinal slide groove 2, it contacts the embossing roller 4 and is at the same horizontal height, i.e., the movable pressure roller 3 and embossing roller 4 are horizontally arranged side-by-side, allowing for embossing of the plastic film.
[0029] In this embodiment, an adjustment mechanism is provided between the bearing seat 5 and the longitudinal slide groove 2. The adjustment mechanism includes an adjustment clamp 7 movably disposed on one side of the longitudinal slide groove 2. The adjustment clamp 7 is arranged longitudinally and parallel to the longitudinal slide groove 2. The bearing seat 5 is disposed between the adjustment clamp 7 and the other side of the longitudinal slide groove 2. The adjustment clamp 7 and the longitudinal slide groove 2 work together to achieve the horizontal positioning of the bearing seat 5. It can be considered that the adjustment clamp 7 and the longitudinal slide groove 2 together form a track for the sliding of the bearing seat 5. Therefore, a longitudinally arranged guide protrusion is formed on the side of the adjustment clamp 7 facing the bearing seat 5, and a longitudinally arranged guide recess is formed on the side of the bearing seat 5 facing the adjustment clamp 7, which matches the guide protrusion. Similarly, due to the longitudinal slide groove 2, a structure symmetrical to the guide protrusion, resembling a "protrusion," is also formed on the side of the bearing seat 5 away from the adjustment clamp 7. A recess matching the above-mentioned "protrusion" is also formed, allowing the bearing seat 5 to slide up and down between the adjustment clamp 7 and the longitudinal slide groove 2. Of course, recessed structures can be provided on the adjusting clamp 7 and the frame 1 to replace the above-mentioned guide protrusions, and protruding structures can be provided on both sides of the bearing seat 5 to replace the above-mentioned guide recesses, as long as the guide can slide up and down.
[0030] The adjustment mechanism also includes a travel component for adjusting the horizontal position of the adjustment clamp 7. For example... Figure 3As shown, the stroke component includes a fixed part fixed to the frame 1, and an adjusting part slidably disposed on the fixed part in the horizontal direction. The side of the adjusting clamp 7 away from the bearing seat 5 abuts against the adjusting part. The horizontal position of the adjusting clamp 7 is changed by changing the position of the adjusting part. Specifically, the fixed part in this embodiment includes a fixing block 8 fixed to the frame 1. The fixing block 8 is arranged longitudinally and one is provided on each side of the plate of the frame 1 along the thickness direction of the bearing seat 5. Fixing through holes are opened at corresponding positions of the fixing block 8 and the plate of the frame 1. The fixing block 8 is fixed to the frame 1 by passing threaded fasteners (not shown in the figure) through the fixing through holes. Two fixing blocks 8 can make the position of the adjusting clamp 7 more stable. When the number of fixing blocks 8 is greater than 2, multiple fixing blocks 8 are connected and fixedly disposed on the frame 1 by fasteners. The adjusting part in this embodiment includes a screw 9 threaded through the fixing block 8 in a horizontal direction. Each fixing block 8 has three longitudinally arranged screws 9 threaded through it. The number of screws 9 can be adjusted as needed, but should be at least two to ensure the structural stability of the adjusting clamp 7. Each screw 9 has a turning part 10 for rotating it at the end furthest from the adjusting clamp 7. In this embodiment, the turning part 10 is a cylindrical turning head fixed to the end of the screw 9. The position of the screw 9 is changed by manually rotating the turning part 10. In other embodiments, the turning part 10 can also be configured as an electrically driven structure, such as driving the screw 9 to rotate via a motor. The adjusting mechanism can also use other direct drive mechanisms, such as linear motors, electric telescopic rods, or a motor-screw coupling structure, as long as the horizontal position of the adjusting clamp 7 can be changed through the adjusting mechanism.
[0031] Please refer to Figure 3 When it is necessary to change the depth of the pattern or pitting embossed on the plastic film using this embodiment, screw 9 is turned, causing it to rotate relative to the fixed block 8 and move left or right. The adjusting clamp 7 then moves left or right accordingly. When the adjusting clamp 7 moves to the left, the left limit position of the bearing seat 5 shifts to the left, causing the left limit position of the movable pressure roller 3 to shift to the left. This increases the distance between the movable pressure roller 3 and the embossing roller 4, reduces the force between them, and decreases the mold entry pressure. At this time, the pattern or pitting embossed on the plastic film is shallower. Conversely, when the adjusting clamp 7 moves to the right, the left limit position of the bearing seat 5 shifts to the right, causing the left limit position of the movable pressure roller 3 to shift to the right. This decreases the distance between the movable pressure roller 3 and the embossing roller 4, increases the force between them, and increases the mold entry pressure. At this time, the pattern or pitting embossed on the plastic film is deeper. Since the above positional changes are all fine adjustments, they do not affect the longitudinal stability of the bearing seat 5. It is important to note that when tightening, try to ensure that multiple screws 9 are tightened synchronously, and the amount of tightening of screws 9 should be controlled based on the measuring tools or the operator's experience.
Claims
1. A blown film machine embossing device with an adjusting mechanism, comprising a frame and at least one embossing assembly mounted on the frame, the embossing assembly including a movable pressure roller and an embossing roller, the movable pressure roller having both ends mounted in a longitudinal groove of the frame via sliding bearing seats, the embossing roller having both ends rotatably mounted on one side of the longitudinal groove, and further comprising a driving component for controlling the sliding bearing seats to rise and fall in the longitudinal groove, wherein during embossing operation, the movable pressure roller and the embossing roller are arranged horizontally side by side, characterized in that: An adjustment mechanism is provided between the bearing housing and the longitudinal slide groove. The adjustment mechanism includes an adjustment clamp block movably disposed on one side of the longitudinal slide groove. The bearing housing is disposed between the adjustment clamp block and the other side of the longitudinal slide groove. The adjustment mechanism also includes a stroke component. The stroke component includes a fixed part fixed on the frame and an adjustment part slidably disposed on the fixed part in the horizontal direction. The side of the adjustment clamp block away from the bearing housing abuts against the adjustment part. The horizontal position of the adjustment clamp block is changed by changing the position of the adjustment part.
2. The blown film embossing device with an adjusting mechanism according to claim 1, characterized in that: The fixing part includes a fixing block fixed on the frame, and the adjusting part includes a screw threaded through the fixing block in a horizontal direction.
3. The blown film embossing device with an adjusting mechanism according to claim 2, characterized in that: The end of the screw away from the adjusting clamp is provided with a screwing part for rotating the screw.
4. The blown film embossing device with an adjusting mechanism according to claim 3, characterized in that: Two or more fixing blocks are provided along the thickness direction of the bearing seat, and each fixing block is provided with a screw and a screwing part.
5. The blown film embossing device with an adjusting mechanism according to claim 4, characterized in that: The adjusting clamp is set longitudinally and parallel to the longitudinal slide groove.
6. The blown film embossing device with an adjusting mechanism according to claim 5, characterized in that: The fixing blocks are arranged longitudinally, and each fixing block has two or more longitudinally arranged screws threaded through it.
7. The blown film embossing device with an adjusting mechanism according to any one of claims 1 to 6, characterized in that: The adjusting clamp has a longitudinally arranged guide protrusion or guide recess on the side facing the bearing housing, and the bearing housing has a longitudinally arranged guide recess or guide protrusion on the side facing the adjusting clamp.
8. The blown film embossing device with an adjusting mechanism according to claim 7, characterized in that: The drive unit includes a cylinder mounted on the frame, with the piston rod of the cylinder extending from the top of a longitudinal groove and connected to a slider-type bearing housing.
9. The blown film embossing device with an adjusting mechanism according to claim 8, characterized in that: The outer surface of the embossing roller has a textured surface or a raised dot pattern, while the outer surface of the movable pressure roller is a rubber layer.