Guiding device for plastic bag film blowing production

Abstract

The invention provides a plastic bag film blowing production guiding device which structurally comprises a guiding pipe, connecting rods are movably connected to the top and the bottom of the guiding pipe in an inserted mode, the end, away from the guiding pipe, of each connecting rod is in threaded connection with a ball head rod, and a ball head of each ball head rod is movably connected with a ball head seat; an adjusting air cylinder, a first supporting rod and a second supporting rod are matched to adjust the working distance between every two adjacent mounting rings, a limiting spring is stretched or compressed, movement of the guide pipes close to the middles or the edges of the mounting rings is completed, and guide of plastic films with different inner diameter sizes is adapted; in the process that the rotating ring rotates at the bottom of the mounting ring or the distance between the rotating ring and the mounting ring is changed, the guide pipe is arranged to be close to the central area of the mounting ring or away from the central area, and the guide distance adjustment of boundary dimension adaptive guide and process requirements of the equipment for film blowing production of plastic bags with different sizes is completed.

Description

Technical Field

[0001] This invention relates to the field of plastic blown film production, and more specifically to a guiding device for plastic bag blown film production. Background Technology

[0002] The production of plastic bags involves a process of blowing film, cutting, winding, slitting, unwinding, and bag making. During the blowing operation, guiding equipment is needed at the blowing point of the blowing machine to guide the blown plastic film and control the shape, size, and trajectory of the film bubble.

[0003] Currently, common guiding equipment adopts a fixed-size guide ring or a fixed-assembly guide rod structure. These guiding components are usually arranged horizontally and provide support and guidance on the outside of the blown film bubble. During the blown film extrusion and machine adjustment process, workers need to adjust the guide rod or guide ring according to the size of the blown film bubble to adapt to the size of the bubble and provide guidance and support for the bubble during subsequent blown film production. The position of the guide ring and guide rod usually cannot be adjusted or changed during production, which requires a high level of technical skill from workers in adjusting the equipment before production.

[0004] The inventor proposes a guiding device for plastic bag blown film production, which adopts an inclined guide tube and anti-friction sleeve. Compared with the common horizontal design, the inclined guide tube can provide guidance and support for the film bubble in both horizontal and vertical directions. At the same time, the designed spacing adjustment function can meet the guidance and conveying distance requirements of film bubbles of different sizes. Summary of the Invention

[0005] 1. The problem the invention aims to solve: The present invention provides a guiding device for plastic bag blown film production, which solves the technical problem mentioned in the background art that the guiding components in the existing film bubble blowing and guiding operation are inconvenient to adjust.

[0006] 2. Technical Solution: To achieve the above objectives, the technical solution provided by the present invention is: a guiding device for plastic bag blown film production, comprising the following structure: A guide tube, wherein a connecting rod is movably inserted into both the top and bottom of the guide tube, and a ball head rod is threadedly connected to the end of the connecting rod away from the guide tube, and a ball head seat is movably connected to the ball head of the ball head rod; Multiple mounting rings are arranged from bottom to top. The bottom of the mounting ring is movably connected to the top of the rotating ring. The top of the mounting ring is fixedly connected to the outside of the ball head seat, and the bottom of the rotating ring is fixedly connected to the outside of the ball head seat.

[0007] Furthermore, limit springs are snapped into the inner sides of the top and bottom of the guide tube, and damping sleeves are fitted around the outside of the limit springs. The two limit springs are snapped into the bottom of the connecting rod at the ends of the guide tube, and anti-friction sleeves are fixed to the outside of the guide tube.

[0008] Furthermore, the multiple guide tubes are arranged in a ring array around the center of the mounting ring, and the guide ring is in an inclined assembly posture on its vertical projection plane. The guide tubes in the ring array are arranged between the mounting ring and the rotating ring, and the angle difference in the horizontal projection of adjacent ring array guide tubes is within 5°-30°.

[0009] Furthermore, slide seats are fixedly provided at both ends of the mounting ring, a guide seat is fixedly provided at the front end of the mounting ring, a guide shaft is fixedly provided at the middle of the guide seat, an adjusting motor is fixedly provided at the rear end of the mounting ring, and a flat gear is fixedly provided at the bottom output end of the adjusting motor.

[0010] Dust covers are added to the external area of ​​the adjusting motor and the corresponding gear ring of the mounting ring to prevent dust and debris generated by the meshing of the flat gear and the gear ring from threatening the diaphragm bubble.

[0011] The adjustment motors configured on the multiple mounting rings are coordinated and managed through the PLC control terminal.

[0012] Furthermore, a toothed ring is fixed at the bottom of the rotating ring, and a toothed groove is provided on the rear side of the toothed ring for meshing with a flat gear.

[0013] Furthermore, an assembly ring is fixedly provided in the middle of the mounting ring, a limiting hole is provided on the outside of the assembly ring, a docking ring is movably sleeved on the bottom of the assembly ring, the bottom of the docking ring is fixedly connected to the top of the rotating ring, and a plurality of limiting pins with matching limiting holes are inserted into the top of the docking ring.

[0014] Furthermore, it also includes a frame, the bottom of which is fixedly connected to the bottom of the mounting ring located at the lowest point. The bottom and top of the frame are respectively provided with a feed hole and a discharge hole. Slide rods are fixedly provided at the left and right ends and the front end of the frame. The outside of the slide rods located at the left and right ends of the frame is movably sleeved with the middle of the slide seat, and the outside of the slide rods located at the front of the frame is movably sleeved with the middle of the guide seat.

[0015] Furthermore, a guide frame is fixedly provided at the front of the frame, and multiple guide holes for cooperating with the guide shaft are opened on the outside of the guide frame. An adjusting cylinder is fixedly provided at the bottom of the frame, and the top output end of the adjusting cylinder is fixedly connected to the front of the guide shaft. Multiple first support rods and second support rods are movably provided on the front and rear sides of the inner wall of the guide frame, and the multiple first support rods and second support rods are movably connected to form a scissor lifting structure. The middle part of the first support rod is movably sleeved with the outside of the guide shaft, and the middle part of the second support rod is movably sleeved with the outside of the guide shaft.

[0016] 3. Beneficial effects: Compared with the prior art, the technical solution provided by this invention has the following advantages: This invention provides a guiding device for plastic bag blown film production. An adjusting cylinder, a first support rod, and a second support rod work together to adjust the working distance between adjacent mounting rings. A limiting spring stretches or compresses, allowing the guide tube to move closer to the center or edge of the mounting ring. This adapts to guide plastic films of different inner diameters. As the rotating ring rotates at the bottom of the mounting ring or the distance between the rotating ring and the mounting ring changes, the guide tube is positioned closer to or further away from the center area of ​​the mounting ring. This completes the device's adaptation to the external dimensions and process requirements of blown film production for plastic bags of different sizes.

[0017] The parts of the device not covered herein are the same as or can be implemented using existing technologies. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a top view of the guide tube structure of the present invention; Figure 3 This is a schematic diagram of the guide frame structure of the present invention; Figure 4 This is a half-sectional schematic diagram of the guide tube structure of the present invention; Figure 5 For the present invention Figure 4 Enlarged view of the structure at point A in the middle; Figure 6 This is a schematic diagram of the assembly of the guide shaft and guide bracket of the present invention; Figure 7 For the present invention Figure 6 Enlarged view of the structure at point B; Figure 8 This is a schematic diagram of the regulating motor structure of the present invention; Figure 9 For the present invention Figure 8 Enlarged view of the structure at point C; Figure 10This is a half-sectional schematic diagram of the mounting ring structure of the present invention; Figure 11 This is a half-sectional schematic diagram of the assembly ring structure of the present invention; Figure 12 For the present invention Figure 11 Enlarged view of the structure at point D.

[0019] Figure label: Guide tube-1; Limiting spring-11; Anti-friction sleeve-12; Connecting rod-2; Ball joint-21; Ball joint seat-22; Mounting ring-3; slide block-31; guide seat-32; guide shaft-33; adjusting motor-34; spur gear-35; Rotary ring-4; Toothed ring-41; Assembly ring-5; Limiting hole-51; Docking ring-6; Limit pin-61; Frame-7; Feed port-71; Discharge port-72; Slide bar-73; Guide frame-8; guide hole-81; adjusting cylinder-82; first support rod-83; second support rod-84. Detailed Implementation

[0020] To facilitate understanding of the present invention, a more complete description of the invention will be given below with reference to the accompanying drawings, which illustrate several embodiments of the invention. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that the disclosure of the invention will be more thorough and complete.

[0021] It should be noted that when an element is referred to as being "fixed to" another element, it can be directly on the other element or there may be an intervening element; when an element is referred to as being "connected to" another element, it can be directly connected to the other element or there may be an intervening element; the terms "vertical," "horizontal," "left," "right," and similar expressions used in this document are for illustrative purposes only.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains; the terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to limit the invention; the term "and / or" as used herein includes any and all combinations of one or more of the associated listed items. Example

[0023] Reference Figure 1-12 A guiding device for plastic bag blown film production includes the following structure: The guide tube 1 has a connecting rod 2 movably inserted into both its top and bottom. The end of the connecting rod 2 away from the guide tube 1 is threaded with a ball head rod 21, and a ball head seat 22 is movably connected to the ball head of the ball head rod 21. Multiple mounting rings 3 are arranged from bottom to top. The bottom of the mounting ring 3 is movably connected to the top of the rotating ring 4. The top of the mounting ring 3 is fixedly connected to the outside of the ball head seat 22. The bottom of the rotating ring 4 is fixedly connected to the outside of the ball head seat 22.

[0024] In this embodiment, limit springs 11 are snapped into the inner sides of the top and bottom of the guide tube 1. A damping sleeve is provided on the outside of the limit springs 11. The ends of the two limit springs 11 are snapped into the bottom of the connecting rod 2. An anti-friction sleeve 12 is fixed on the outside of the guide tube 1.

[0025] In the assembly design of the guide tube 1 and the connecting rod 2, the guide tube 1 and the connecting rod 2 are connected by the limiting spring 11. During the process of the rotating ring 4 rotating at the bottom of the mounting ring 3 or the distance between the rotating ring 4 and the mounting ring 3 changing, the guide tube 1 is set to be close to or away from the center area of ​​the mounting ring 3, so as to meet the needs of this equipment for blowing film production of plastic bags with different inner diameters.

[0026] In this embodiment, multiple guide tubes 1 are arranged in a ring array around the center of the mounting ring 3, and the guide ring is in an inclined assembly posture on the vertical projection surface. The ring array of guide tubes 1 is set between the mounting ring 3 and the rotating ring 4, and the angle difference in the horizontal projection of adjacent ring array of guide tubes 1 is within 5°-30°.

[0027] The top and bottom of the guide tube 1 are respectively assembled between the mounting ring 3 and the rotating ring 4 via the connecting rod 2, the ball head rod 21 and the ball head seat 22. The guide tubes are arranged in a ring array and there is an angle between adjacent guide tubes 1. Multiple sets of guide tubes 1 are distributed from bottom to top in the middle of the frame 7. A regular polygonal structure is formed in the stage from the feed hole 71 to the discharge hole 72, which constrains and guides the plastic film in the blown film guiding process.

[0028] Compared to the horizontally positioned guide tube 1 and anti-friction sleeve 12 in the current design, this device has a larger constraint range in the vertical direction. In the prior art, the constraint and guidance of the plastic film is in the horizontal direction, while the constraint range of this solution is in both the horizontal and vertical directions outside the curved surface of the plastic film, and has a more complete constraint and guidance effect.

[0029] In this embodiment, slide seats 31 are fixed at both ends of the mounting ring 3, guide seats 32 are fixed at the front end of the mounting ring 3, guide shafts 33 are fixed at the middle of the guide seats 32, adjustment motors 34 are fixed at the rear end of the mounting ring 3, flat gears 35 are fixed at the bottom output end of the adjustment motors 34, and toothed rings 41 are fixed at the bottom of the rotating ring 4. Toothed grooves that mesh with flat gears 35 are opened on the rear side of the toothed rings 41.

[0030] The guide seat 32, slide seat 31 and slide rod 73 cooperate to complete the lifting and moving guide of the mounting ring 3 in the middle of the frame 7. The adjusting motor 34 drives the flat gear 35 to rotate. The flat gear 35 cooperates with the gear ring 41 to complete the design of the rotating ring 4 being rotatable below the mounting ring 3.

[0031] The guide shaft 33 cooperates with the first support rod 83 and the second support rod 84. Under the push of the adjusting cylinder 82, the guide shaft 33 can move up and down in the guide hole 81 of the guide frame 8. Since the bottom mounting ring 3 is fixedly assembled under the frame 7, the adjacent spacing of multiple mounting rings 3 can be increased or decreased.

[0032] The working distance between the mounting ring 3 and the rotating ring 4 and the adjacent mounting ring 3 changes, and the limiting spring 11 is stretched or compressed, so that the guide tube 1 moves closer to the middle or edge of the mounting ring 3, and the guide tube 1 and the anti-friction sleeve 12 guide and adapt the plastic bag blowing film in the vertical direction.

[0033] In this embodiment, an assembly ring 5 is fixedly provided in the middle of the mounting ring 3. A limiting hole 51 is provided on the outside of the assembly ring 5. A docking ring 6 is movably sleeved on the bottom of the assembly ring 5. The bottom of the docking ring 6 is fixedly connected to the top of the rotating ring 4. A plurality of limiting pins 61 that cooperate with the limiting hole 51 are inserted into the top of the docking ring 6.

[0034] The limiting hole 51 of the assembly ring 5 and the limiting pin 61 of the docking ring 6 cooperate to complete the rotatable assembly design of the rotating ring 4 at the bottom of the mounting ring 3. The limiting hole 51 and the limiting pin 61 limit the rotatable range of the rotating ring 4 under the mounting ring 3. Together with the toothed groove design at the rear of the toothed ring 41, it prevents the rotating ring 4 from rotating to a large angle under the mounting ring 3, which could cause the connecting rod 2 to disengage from the guide tube 1 or the limiting spring 11 to be overstretched.

[0035] During the rotation of the rotating ring 4, the ball head seat 22 cooperates with the ball head rod 21 to complete the movement of the guide tube 1 and the anti-friction sleeve 12 toward the center or edge of the mounting ring 3, which is suitable for blown film production of plastic bags of different sizes.

[0036] In this embodiment, a frame 7 is also included. The bottom of the frame 7 is fixedly connected to the bottom of the mounting ring 3 located at the bottommost point. The bottom and top of the frame 7 are respectively provided with a feed hole 71 and a discharge hole 72. Slide rods 73 are fixedly provided at the left and right ends and the front end of the frame 7. The outside of the slide rods 73 located at the left and right ends of the frame 7 is movably sleeved with the middle of the slide block 31, and the outside of the slide rod 73 located at the front of the frame 7 is movably sleeved with the middle of the guide seat 32.

[0037] The design of the feed hole 71 and the discharge hole 72 completes the material belt feeding and discharging design in the plastic bag blown film production.

[0038] In this embodiment, a guide frame 8 is fixedly provided at the front of the frame 7. Multiple guide holes 81 that cooperate with the guide shaft 33 are opened on the outside of the guide frame 8. An adjusting cylinder 82 is fixedly provided at the bottom of the frame 7. The top output end of the adjusting cylinder 82 is fixedly connected to the front of the guide shaft 33. Multiple first support rods 83 and second support rods 84 are movably provided on the front and rear sides of the inner wall of the guide frame 8, respectively. The multiple first support rods 83 and second support rods 84 are movably connected up and down to form a scissor lifting structure. The middle part of the first support rod 83 is movably sleeved with the outside of the guide shaft 33, and the middle part of the second support rod 84 is movably sleeved with the outside of the guide shaft 33.

[0039] The adjusting cylinder 82, the first support rod 83, and the second support rod 84 work together to adjust the working distance between adjacent mounting rings 3.

[0040] In this embodiment: The adjusting cylinder 82, the first support rod 83, and the second support rod 84 work together to adjust the working distance between adjacent mounting rings 3. The limit spring 11 is stretched or compressed to move the guide tube 1 closer to the center or edge of the mounting ring 3, adapting to guide plastic films of different inner diameters. The adjusting motor 34 drives the spur gear 35 to rotate. The spur gear 35 works with the gear ring 41 to complete the rotation of the rotating ring 4 at the bottom of the mounting ring 3 or the change in the distance between the rotating ring 4 and the mounting ring 3. This completes the setting of the guide tube 1 closer to or away from the center area of ​​the mounting ring 3, meeting the guidance requirements of the blown film production of plastic bags with different inner diameters. This completes the adjustment of the guide distance for the external dimensions and process requirements of blown film production of plastic bags of different sizes.

[0041] The above-described embodiments are merely illustrative of certain implementations of the present invention, and are described in a relatively specific and detailed manner. However, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements are all within the scope of protection of the present invention. Therefore, the scope of protection of the present invention should be determined by the appended claims.

Claims

1. A guiding device for plastic bag blown film production, characterized in that: Includes the following structure: The guide tube (1) has a connecting rod (2) movably inserted into both the top and bottom of the guide tube (1). The end of the connecting rod (2) away from the guide tube (1) is threaded with a ball head rod (21), and a ball head seat (22) is movably connected to the ball head of the ball head rod (21). Multiple mounting rings (3) are arranged from bottom to top. The bottom of the mounting ring (3) is movably connected to the top of the rotating ring (4). The top of the mounting ring (3) is fixedly connected to the outside of the ball head seat (22). The bottom of the rotating ring (4) is fixedly connected to the outside of the ball head seat (22).

2. The guiding device for blown film production of plastic bags according to claim 1, characterized in that: The top and bottom inner sides of the guide tube (1) are both fitted with limit springs (11), and the outside of the limit springs (11) is fitted with a damping sleeve. The ends of the two limit springs (11) facing the guide tube (1) are fitted with the bottom of the connecting rod (2). The outside of the guide tube (1) is fixed with an anti-friction sleeve (12).

3. The guiding device for blown film production of plastic bags according to claim 1, characterized in that: Multiple guide tubes (1) are arranged in a ring array around the center of the mounting ring (3), and the guide ring is tilted on the vertical projection plane. The guide tubes (1) are arranged in a ring array between the mounting ring (3) and the rotating ring (4). The angle difference between the horizontal projections of adjacent guide tubes (1) is within 5°-30°.

4. The guiding device for blown film production of plastic bags according to claim 1, characterized in that: The mounting ring (3) has slide seats (31) fixed at both ends of the left and right sides, a guide seat (32) fixed at the front end of the mounting ring (3), a guide shaft (33) fixed at the middle of the guide seat (32), an adjustment motor (34) fixed at the rear end of the mounting ring (3), and a flat gear (35) fixed at the bottom output end of the adjustment motor (34).

5. The guiding device for blown film production of plastic bags according to claim 1, characterized in that: The bottom of the rotating ring (4) is fixed with a toothed ring (41), and the rear side of the toothed ring (41) is provided with a tooth groove that meshes with the flat gear (35).

6. The guiding device for blown film production of plastic bags according to claim 1, characterized in that: An assembly ring (5) is fixedly provided in the middle of the mounting ring (3). A limiting hole (51) is opened on the outside of the assembly ring (5). A docking ring (6) is movably sleeved on the bottom of the assembly ring (5). The bottom of the docking ring (6) is fixedly connected to the top of the rotating ring (4). A plurality of limiting pins (61) with matching limiting holes (51) are inserted into the top of the docking ring (6).

7. The guiding device for blown film production of plastic bags according to claim 1, characterized in that: It also includes a frame (7), the bottom of which is fixedly connected to the bottom of the mounting ring (3) located at the bottommost point. The bottom and top of the frame (7) are respectively provided with a feed hole (71) and a discharge hole (72). The left and right ends and the front end of the frame (7) are all fixedly provided with slide rods (73). The outside of the slide rods (73) located at the left and right ends of the frame (7) is movably sleeved with the middle of the slide seat (31). The outside of the slide rods (73) located at the front of the frame (7) is movably sleeved with the middle of the guide seat (32).

8. The guiding device for blown film production of plastic bags according to claim 7, characterized in that: The front of the frame (7) is fixedly provided with a guide frame (8). The guide frame (8) has multiple guide holes (81) for cooperating with the guide shaft (33) on its outside. The bottom of the frame (7) is fixedly provided with an adjusting cylinder (82). The top output end of the adjusting cylinder (82) is fixedly connected to the front of the guide shaft (33). Multiple first support rods (83) and second support rods (84) are movably provided on the front and rear sides of the inner wall of the guide frame (8). The multiple first support rods (83) and second support rods (84) are movably connected up and down to form a scissor lifting structure. The middle part of the first support rod (83) is movably sleeved with the outside of the guide shaft (33), and the middle part of the second support rod (84) is movably sleeved with the outside of the guide shaft (33).

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