Anti-wrinkle plastic film forming equipment

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The synchronous deflection design of the flip mechanism and the rolling frame solves the problems of severe wrinkles and wear in plastic film forming equipment, achieving efficient production and quality improvement.

CN119526744BActive Publication Date: 2025-09-30WUHAN NEW ZHONGDE PLASTIC MASCH CO LTD

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Patent Information

Application Number: CN202510021846.1
Authority / Receiving Office: CN · China
Patent Type: Patents(China)
Current Assignee / Owner
Filing Date: 2025-01-07
Publication Date: 2025-09-30
Estimated Expiration: 2045-01-07

AI Technical Summary

Technical Problem

Existing plastic film forming equipment is prone to wrinkles during the production process, the herringbone frame is inconvenient to adjust and suffers severe wear, resulting in low production efficiency and an inability to effectively avoid wrinkles and bubbles.

Method used

The coordinated design of the flip mechanism and the rolling frame realizes the synchronous deflection and flipping of the rolling frame. The adjustment groove and the level detection mechanism ensure the angle consistency and levelness of the rolling frame, thus avoiding uneven pressure on the film and uneven wear of the roller.

Benefits of technology

It effectively avoids wrinkles and bubbles during the film forming process, improves production efficiency, reduces downtime, and improves film quality and production efficiency.

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Abstract

The present invention belongs to the technical field of plastic film forming equipment, and specifically relates to an anti-wrinkle plastic film forming equipment. The equipment comprises a first support frame, in which a film blowing machine die head is fixedly installed, the film blowing machine die head being used to extrude a tubular film; a second support frame is fixedly installed on the top of the first support frame, the second support frame being provided with a pair of rolling frames, the rolling frames being used to support and stretch the tubular film; a flipping mechanism is fixedly installed in the second support frame, the flipping mechanism being connected to the rolling frames, the flipping mechanism being used to control the rotation and flipping of the rolling frames; the present invention ensures that the angles of the two rolling frames remain consistent, thereby avoiding problems such as bubbles, wrinkles, and bending caused by inconsistent pressure on the tubular film, while also avoiding the problem of long-term shutdown for rolling frame replacement, thereby improving production efficiency; the present invention can quickly adjust the opening between the rolling frames, further reducing wrinkle problems during the film forming process.

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Description

Technical Field

[0001] The invention belongs to the technical field of plastic film forming equipment, and in particular relates to an anti-wrinkle plastic film forming equipment. Background Art

[0002] Plastic film forming equipment is a machine used to process plastic raw materials into thin film. It includes various types, such as blown film machines and cast film machines. Film blowing machines are one type of plastic film forming equipment, primarily used to produce thermoplastic films such as polyethylene. Their operating principle is to heat and melt plastic pellets, extruding the molten material into a thin film tube. This tube is then inflated with gas, and cooled to produce the desired film thickness and width. During this process, parameters such as feed speed, temperature, and airflow must be carefully controlled to ensure film quality and uniformity.

[0003] Chinese patent application number 202410295129.3 discloses a method for blow molding of polyethylene antistatic film. The equipment involved in the method includes an extrusion structure, a film blowing structure and a blow molding cover covering the film blowing die head connected in sequence, and also includes a film outlet, a positioning component, a thickness detection component 1, a thickness adjustment component 1, a cooling component, a multi-layer component, a thickness detection component 2, a thickness adjustment component 2 and a cooling component. The present invention detects the thickness from the outside of the film by using a thickness detection component 1, and detects the thickness from the inside of the film by using a thickness detection component 2. Local thickness adjustment is performed from the outside of the film by using a thickness adjustment component 1, and local thickness adjustment is performed from the inside of the film by using a thickness adjustment component 2. Gathering cooling is performed from the outside of the film by using a cooling component, and air supply cooling is performed from the inside of the film by using a cooling component. The method has consistent operation, strong controllability and a wide range, and realizes the automation and efficiency of polyethylene antistatic film blow molding, ensuring the blow molding effect.

[0004] In the process of preparing plastic film by blown film molding, the herringbone frame has a great impact on the generation of film wrinkles. The top and bottom openings of the herringbone frame need to be kept at a suitable angle according to the different needs of the film to ensure uniform air flow speed, uniform cooling and uniform pressure on the film, thereby reducing the generation of wrinkles. However, the adjustment method of the herringbone frame is usually single, and the deflection angle cannot be guaranteed to be synchronized, resulting in quality problems. At the same time, after a long period of use, the roller on the top of the herringbone frame is prone to severe wear and tear. At this time, it is necessary to stop the machine for replacement, resulting in long maintenance time and low production efficiency. In addition, how to quickly adjust the angle of the herringbone frame to avoid wrinkles is also an important research direction for improving film production quality. Summary of the Invention

[0005] In order to solve the shortcomings of the existing technology, the present invention provides an anti-wrinkle plastic film forming equipment. The present invention realizes the synchronous deflection of a pair of rolling frames, thereby ensuring that the angles of the two rolling frames are always consistent, avoiding the generation of bubbles, wrinkles and bending caused by inconsistent pressure on the tubular film, and at the same time, the two rolling frames can be flipped, thereby avoiding the problem of long-term shutdown to replace the rolling frames, and improving production efficiency; the present invention can quickly adjust the opening between the rolling frames, thereby improving production quality and further reducing the wrinkle problem in the film forming process; the present invention can always ensure that the two rolling frames remain horizontal, avoiding the subsequent film stretching that causes film distortion or wrinkles and other problems, and at the same time, will not affect the flipping operation of the flipping mechanism.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A wrinkle-proof plastic film forming device includes a first support frame, in which a film blowing machine die head is fixedly installed, and the film blowing machine die head is used to extrude a tubular film; a second support frame is fixedly installed on the top of the first support frame, and a pair of rolling frames are provided in the second support frame, and the rolling frames are used to support and stretch the tubular film; a flip mechanism is fixedly installed in the second support frame, and the flip mechanism is connected to the rolling frames, and the flip mechanism is used to control the rotation and flipping of the rolling frames; a roller mechanism is installed on the top of the second support frame, and the roller mechanism is used to flatten and pull the tubular film.

[0008] Furthermore, the rolling frame includes a support frame, which includes two support plates, and the middle parts between the two support plates are fixedly connected by a fixing rod; a plurality of rollers are connected to the two support plates for common rotation, and the plurality of rollers are evenly arranged at equal distances; an adjustment groove is fixedly provided on the outer side of one of the support plates, and rotation holes are opened at both ends of the adjustment groove, and a screw rod is connected to the two rotation holes for common rotation, and an adjustment motor is fixedly installed on the outer side of one end of the adjustment groove, and the output end of the adjustment motor is fixedly connected to one end of the screw rod.

[0009] Furthermore, the flipping mechanism includes a gear box, the bottom of the gear box is fixedly provided with a supporting foot, and the supporting foot is fixedly connected to the second supporting frame; a driven gear is provided on both sides of the interior of the gear box, and a driving gear is provided between the two driven gears, and the driven gears are meshed with the driving gear; a first rotating shaft is fixedly connected to the driving gear, and first rotating holes are correspondingly opened on both sides of the gear box, and the two ends of the first rotating shaft pass through the corresponding first rotating holes and are rotatably connected to them; a transmission motor is fixedly installed on the outer wall of the gear box through a bracket, and the output end of the transmission motor is fixedly connected to one end of the first rotating shaft.

[0010] Furthermore, a second rotating shaft is fixedly connected to the driven gear, and second rotating holes are correspondingly opened on both sides of the gear box, and both ends of the second rotating shaft pass through the corresponding second rotating holes and are rotatably connected thereto;

[0011] One end of the second rotating shaft extends into the corresponding adjusting slot and is slidably connected to the adjusting slot; a threaded hole is formed at one end of the second rotating shaft located inside the adjusting slot, and the threaded hole is threadedly connected to the corresponding screw rod.

[0012] Furthermore, the number of teeth of the driven gear is greater than the number of teeth of the driving gear.

[0013] Furthermore, the roller mechanism includes an active roller and a driven roller, and fixed shafts are fixed at both ends of the active roller; an adjustment mechanism is installed on the top of the second support frame, and the adjustment mechanism includes two mounting plates symmetrically fixed at both ends of the top of the second support frame, and a second rotating hole is opened through the mounting plate, and the fixed shafts at both ends of the active roller pass through the corresponding second rotating holes and are rotatably connected to the second rotating holes; a second motor is fixedly installed on the outer side of the mounting plate, and the output end of the second motor is fixedly connected to the fixed shaft of the active roller.

[0014] Furthermore, a sliding groove is provided through the mounting plate, the driven roller is rotatably connected to the rotating shaft, and both ends of the rotating shaft respectively pass through the corresponding sliding grooves and are slidably connected to the sliding grooves; both ends of the rotating shaft are fixedly connected to a transmission plate, one end of the mounting plate is fixedly connected to a base plate, an electric telescopic rod is fixedly installed on the base plate, and one end of the electric telescopic rod is fixedly connected to the corresponding transmission plate.

[0015] Furthermore, a pair of the rolling frames are provided with a horizontal detection mechanism on the side away from the flipping mechanism, and the horizontal detection mechanism includes a horizontal trough body, and one end of the support plate away from the flipping mechanism is fixedly connected to a second fixed rod, and the second fixed rod is fixed with a slider; the two sliders are located inside the horizontal trough body and are slidably connected to the horizontal trough body; the horizontal trough body is fixed with a liquid level on the side away from the rolling frame.

[0016] Furthermore, the first support frame includes a base, and the film blowing machine die head is fixedly installed on the base; support rods are fixedly provided around the base, and the upper ends of the four support rods are fixedly connected to a square frame;

[0017] The second support frame includes a three-dimensional frame and an intermediate rod. The four sides of the square frame are fixedly connected to the three-dimensional frame through the intermediate rod. The roller mechanism is installed on the top of the three-dimensional frame.

[0018] The present invention also claims protection for a method for forming a film using the above-mentioned wrinkle-resistant plastic film forming device, comprising the following steps:

[0019] S1. When the angles of a pair of rolling frames need to be adjusted, the transmission motor is controlled so that the angles of the pair of rolling frames change at the same speed.

[0020] S2. When the bottom opening between the pair of rolling frames is too large, the adjusting motor is first controlled to position the end of the second rotating shaft above the adjusting slot, and then the transmission motor is controlled to change the angle of the pair of rolling frames so that the bottom opening between the pair of rolling frames changes faster than the top opening;

[0021] S3. When the top opening between the pair of rolling frames is too large, the adjusting motor is first controlled to position the end of the second rotating shaft below the adjusting slot, and then the transmission motor is controlled to change the angle of the pair of rolling frames so that the bottom opening between the pair of rolling frames changes at a slower rate than the top opening.

[0022] S4. When the rollers at the top of the pair of rolling frames are severely worn, the adjusting motor is controlled to position the end of the second rotating shaft above the adjusting slot. The transmission motor is then controlled to flip the pair of rolling frames. After flipping, the adjusting motor is then used to coordinate and control the rolling frames to maintain their previous angles.

[0023] S5. Use the liquid level of the level detection mechanism to detect whether the two rolling frames are in the same horizontal state, and control the adjustment motor to keep the pair of rolling frames level.

[0024] Compared with the prior art, the present invention has the following beneficial effects:

[0025] (1) The present invention realizes the synchronous deflection of a pair of rolling frames through the cooperation of the flipping mechanism and the rolling frame, thereby ensuring that the angles of the two rolling frames are always consistent, avoiding the problems of bubbles, wrinkles and bending caused by inconsistent pressure on the tubular film, and at the same time, it can also flip the two rolling frames, so that the roller with severe wear on the upper end of the rolling frame is replaced to the bottom and the roller with lighter wear on the lower end of the rolling frame is replaced to the top, thereby avoiding the problem of long-term shutdown to replace the rolling frames and improving production efficiency; specifically, when it is necessary to adjust the angle of a pair of rolling frames, the driving gear is rotated by controlling the transmission motor, and the two driven gears are engaged with each other, so that the two driven gears are rotated in opposite directions synchronously at the same speed; because the second rotating shaft is provided with a threaded hole at one end located inside the adjustment groove and the threaded hole is threadedly connected to the corresponding lead screw, when the driven gear rotates, the adjustment groove Since the limit of the screw rod will follow the rotation, the support frame fixedly connected to the adjusting groove will follow the rotation to make the pair of rolling frames deflect synchronously, thereby ensuring that the angles of the two rolling frames are always consistent, avoiding the occurrence of bubbles, wrinkles and bending caused by inconsistent pressure on the tubular film; at the same time, when the roller at the top of a pair of rolling frames is severely worn, the screw rod is first rotated by controlling the adjusting motor, and due to the limit of the adjusting groove, the end of the second rotating shaft is slid on the adjusting groove, so that the end of the second rotating shaft is located above the adjusting groove; then the pair of rolling frames are flipped by controlling the transmission motor, and after flipping, the rolling frames are kept at the previous angle by cooperating with the control of the adjusting motor, so that the roller with severe wear on the upper end of the rolling frame is replaced to the bottom and the roller with lighter wear on the lower end of the rolling frame is replaced to the top, thereby avoiding the problem of long-term shutdown to replace the rolling frame and improving production efficiency.

[0026] (2) The present invention realizes different angle adjustments of the rolling racks through the structural design of the adjustment groove, so that the opening between the rolling racks can be quickly adjusted, thereby improving production quality and further reducing the wrinkle problem in the film forming process; specifically, when the bottom opening between a pair of rolling racks is too large, the adjustment motor is first controlled to make the end of the second rotating shaft be located above the adjustment groove, and then the transmission motor is controlled to change the angle of the pair of rolling racks, so that the opening change speed of the bottom between the pair of rolling racks is greater than the opening change speed of the top, thereby quickly adjusting the opening between the rolling racks; when the top opening between the pair of rolling racks is too large, the adjustment motor is first controlled to make the end of the second rotating shaft be located below the adjustment groove, and then the transmission motor is controlled to change the angle of the pair of rolling racks, so that the opening change speed of the bottom between the pair of rolling racks is less than the opening change speed of the top, thereby quickly adjusting the opening between the rolling racks, comprehensively realizing different angle adjustments of the rolling racks, so that the opening between the rolling racks can be quickly adjusted, thereby improving production quality and further reducing the wrinkle problem in the film forming process.

[0027] (3) The present invention can ensure that the two rolling frames always remain horizontal through the cooperation of the adjustment groove and the horizontal detection mechanism, thereby avoiding problems such as film distortion or wrinkles caused by subsequent film stretching. At the same time, it will not affect the flipping operation of the flipping mechanism. Specifically, when the two rolling frames are not in a horizontal state, the liquid level will display the status. At this time, the pair of rolling frames can be kept horizontal by controlling one of the adjustment motors. At the same time, when the flipping mechanism performs the flipping operation, since the two sliders are located inside the horizontal groove body and are slidably connected to the horizontal groove body, the sliders will adaptively slide inside the horizontal groove body during the flipping process, so that the problem of jamming will not occur. After the flipping is completed, the horizontal groove body at the opposite end is still in a horizontal state, and horizontal detection can still be performed. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a schematic diagram of the overall structure of an anti-wrinkle plastic film forming device of the present invention;

[0029] Figure 2 This is a schematic diagram of the dispersed structure of an anti-wrinkle plastic film forming device of the present invention;

[0030] Figure 3 This is a schematic structural diagram of a roller mechanism and an adjustment mechanism of an anti-wrinkle plastic film forming device of the present invention;

[0031] Figure 4 This is a schematic diagram of the dispersed structure of the roller mechanism of an anti-wrinkle plastic film forming device of the present invention;

[0032] Figure 5 This is a schematic structural diagram of a rolling frame and a turning mechanism of an anti-wrinkle plastic film forming device of the present invention;

[0033] Figure 6 This is a schematic diagram of the partial structure of a horizontal trough of an anti-wrinkle plastic film forming device of the present invention;

[0034] Figure 7 This is a schematic diagram of a partially dispersed structure of an anti-wrinkle plastic film forming device of the present invention;

[0035] Figure 8 This is a schematic diagram of the partial structure of an adjustment tank of an anti-wrinkle plastic film forming device of the present invention;

[0036] Figure 9 This is a schematic diagram of the dispersed structure of the turnover mechanism of an anti-wrinkle plastic film forming device of the present invention.

[0037] The reference numerals are as follows:

[0038] First support frame 100; base 110; support rod 120; frame 130; film blowing machine die head 200; second support frame 300; three-dimensional frame 310; intermediate rod 320; roller mechanism 400; active roller 410; fixed shaft 411; driven roller 420; rotating shaft 421; transmission plate 422; rolling frame 500; support frame 510; support plate 511; fixed rod 512; roller 520; second fixed rod 530; slider 531; adjustment slot 540; adjustment motor 541 ; Screw-542; Rotating hole-543; Flipping mechanism-600; Gear box-610; Support foot-611; Second rotating hole-612; First rotating hole-613; Driven gear-620; Second rotating shaft-621; Threaded hole-622; Driving gear-630; First rotating shaft-631; Transmission motor-640; Adjustment mechanism-700; Mounting plate-710; Base plate-720; Sliding groove-730; Electric telescopic rod-740; Second motor-750; Second rotating hole-760; Horizontal trough-800; Liquid level-810. DETAILED DESCRIPTION

[0039] In order to make the purpose, technical solutions and advantages of the present invention clearer, the present invention is further described in detail below in conjunction with the embodiments. Of course, the specific embodiments described here are only used to explain the present invention and are not used to limit the present invention.

[0040] Although the steps in the present invention are arranged with numbers, they are not intended to limit the order of the steps. Unless the order of the steps is clearly stated or the execution of a step requires other steps as a basis, the relative order of the steps can be adjusted. It is understood that the term "and / or" used herein refers to and covers any and all possible combinations of one or more of the associated listed items.

[0041] Example

[0042] like Figures 1 to 9 As shown, a wrinkle-proof plastic film forming device includes a first support frame 100, in which a film blowing machine die head 200 is fixedly installed, and the film blowing machine die head 200 is used to extrude a tubular film; a second support frame 300 is fixedly installed on the top of the first support frame 100, and a pair of rolling frames 500 are provided in the second support frame 300, and the rolling frames 500 are used to support and stretch the tubular film; a flipping mechanism 600 is fixedly installed in the second support frame 300, and the flipping mechanism 600 is connected to the rolling frames 500, and the flipping mechanism 600 is used to control the rotation and flipping of the rolling frames 500; a roller mechanism 400 is installed on the top of the second support frame 300, and the roller mechanism 400 is used to flatten and pull the tubular film.

[0043] The present invention realizes the synchronous deflection of a pair of rolling frames 500 through the cooperation of the flipping mechanism 600 and the rolling frame 500, thereby ensuring that the angles of the two rolling frames 500 are always consistent, avoiding the generation of bubbles, wrinkles and bending problems caused by inconsistent pressure on the tubular film, and at the same time, it can also flip the two rolling frames 500, so that the roller 520 with severe wear on the upper end of the rolling frame 500 is replaced to the bottom and the roller 520 with lighter wear on the lower end of the rolling frame 500 is replaced to the top, thereby avoiding the problem of long-term shutdown for replacing the rolling frame 500 and improving production efficiency; the flipping mechanism 600 and the rolling frame 500 will be described in detail later.

[0044] It is worth noting that the power equipment such as the film blowing machine die head 200 of the present invention are all powered by an external power supply, and the film blowing machine die head 200 is a prior art, and the feeding equipment such as the screw extrusion equipment connected thereto is also conventional technology, which will not be described in detail here.

[0045] Furthermore, the rolling frame 500 includes a support frame 510, and the support frame 510 includes two support plates 511, and the middle part between the two support plates 511 is fixedly connected by a fixing rod 512; a plurality of rollers 520 are connected to the two support plates 511 for common rotation, and the plurality of rollers 520 are evenly arranged at equal distances; an adjustment groove 540 is fixedly provided on the outer side of one of the support plates 511, and a rotating hole 543 is opened at both ends of the adjustment groove 540, and a screw rod 542 is connected to the two rotating holes 543 for common rotation, and an adjustment motor 541 is fixedly installed on the outer side of one end of the adjustment groove 540, and the output end of the adjustment motor 541 is fixedly connected to one end of the screw rod 542.

[0046] Furthermore, the flipping mechanism 600 includes a gear box 610, and a supporting foot 611 is fixedly provided at the bottom of the gear box 610, and the supporting foot 611 is fixedly connected to the second support frame 300; a driven gear 620 is provided on both sides of the interior of the gear box 610, and a driving gear 630 is provided between the two driven gears 620, and the driven gears 620 are meshed with the driving gear 630; a first rotating shaft 631 is fixedly connected to the driving gear 630, and first rotating holes 613 are correspondingly opened on both sides of the gear box 610, and the two ends of the first rotating shaft 631 pass through the corresponding first rotating holes 613 and are rotatably connected thereto; a transmission motor 640 is fixedly installed on the outer wall of the gear box 610 through a bracket, and the output end of the transmission motor 640 is fixedly connected to one end of the first rotating shaft 631.

[0047] It is worth noting that the transmission motor 640 and the adjustment motor 541 of the present invention are both stepper motors, which can rotate at a fixed angle and can rotate forward or reverse. They are existing mature technologies and will not be described in detail here.

[0048] Furthermore, a second rotating shaft 621 is fixedly connected to the driven gear 620, and second rotating holes 612 are correspondingly opened on both sides of the gear box 610. Both ends of the second rotating shaft 621 pass through the corresponding second rotating holes 612 and are rotatably connected thereto;

[0049] One end of the second rotating shaft 621 extends into the corresponding adjustment slot 540 and is slidably connected to the adjustment slot 540 ; a threaded hole 622 is formed at one end of the second rotating shaft 621 located inside the adjustment slot 540 and the threaded hole 622 is threadedly connected to the corresponding screw rod 542 .

[0050] When the angle of a pair of rolling frames 500 needs to be adjusted, the present invention controls the transmission motor 640 to rotate the driving gear 630, and through the meshing of the driven gear 620, the two driven gears 620 are rotated synchronously in opposite directions at the same speed; because the second rotating shaft 621 is provided with a threaded hole 622 at one end located inside the adjusting groove 540, and the threaded hole 622 is threadedly connected to the corresponding screw rod 542, when the driven gear 620 rotates, the adjusting groove 540 will rotate accordingly due to the limitation of the screw rod 542, thereby achieving the support frame 510 fixedly connected to the adjusting groove 540 to rotate accordingly, so as to synchronize the deflection of the pair of rolling frames 500, thereby ensuring that the angles of the two rolling frames 500 are always consistent, avoiding bubbles, wrinkles and bending caused by inconsistent pressure on the tubular film. Problems such as these arise; at the same time, when the roller 520 at the top of a pair of rolling frames 500 is severely worn, the screw rod 542 is first rotated by controlling the adjusting motor 541. Due to the limitation of the adjusting slot 540, the end of the second rotating shaft 621 is slid on the adjusting slot 540, so that the end of the second rotating shaft 621 is located above the adjusting slot 540; and then the pair of rolling frames 500 are flipped by controlling the transmission motor 640. After flipping, the adjusting motor 541 is then used to cooperate with the control to keep the rolling frames 500 at their previous angles, so that the roller 520 with severe wear at the upper end of the rolling frame 500 is replaced to the bottom and the roller 520 with lighter wear at the lower end of the rolling frame 500 is replaced to the top, thereby avoiding the problem of long-term shutdown to replace the rolling frames 500 and improving production efficiency.

[0051] It is worth noting that, in the process of flipping a pair of rolling racks 500, the purpose of sliding the end of the second rotating shaft 621 on the adjustment groove 540 to ensure that the end of the second rotating shaft 621 is located above the adjustment groove 540 is to avoid collision and interference between the subsequent rolling racks 500 when flipping; and, the present invention does not further limit the structural dimensions of the adjustment groove 540, which can be flexibly adjusted according to actual conditions, and will not be described in detail here.

[0052] Furthermore, the number of teeth of the driven gear 620 is greater than the number of teeth of the driving gear 630. This design facilitates precise adjustment of the rotation angle of the rolling frame 500.

[0053] Furthermore, the roller mechanism 400 includes an active roller 410 and a driven roller 420, and fixed shafts 411 are fixed at both ends of the active roller 410; an adjustment mechanism 700 is installed on the top of the second support frame 300, and the adjustment mechanism 700 includes two mounting plates 710 symmetrically fixed at both ends of the top of the second support frame 300, and a second rotating hole 760 is opened through the mounting plate 710, and the fixed shafts 411 at both ends of the active roller 410 pass through the corresponding second rotating holes 760 and are rotatably connected to the second rotating holes 760; a second motor 750 is fixedly installed on the outer side of the mounting plate 710, and the output end of the second motor 750 is fixedly connected to the fixed shaft 411 of the active roller 410.

[0054] Furthermore, a sliding groove 730 is provided through the mounting plate 710, the driven roller 420 is rotatably connected to the rotating shaft 421, and the two ends of the rotating shaft 421 respectively pass through the corresponding sliding grooves 730 and are slidably connected to the sliding grooves 730; the two ends of the rotating shaft 421 are fixedly connected to the transmission plate 422, one end of the mounting plate 710 is fixedly connected to the base plate 720, and an electric telescopic rod 740 is fixedly installed on the base plate 720, and one end of the electric telescopic rod 740 is fixedly connected to the corresponding transmission plate 422.

[0055] The tubular film of the present invention is flattened and pulled between the active roller 410 and the driven roller 420 through the rotation of the active roller 410; at the same time, the adjustment mechanism 700 of the present invention can quickly adjust the gap between the active roller 410 and the driven roller 420 by controlling the electric telescopic rod 740, thereby facilitating and quickly controlling the thickness and molding quality of the film.

[0056] Furthermore, a pair of the rolling frames 500 are provided with a horizontal detection mechanism on one side away from the flipping mechanism 600, and the horizontal detection mechanism includes a horizontal trough 800, and one end of the support plate 511 away from the flipping mechanism 600 is fixedly connected to a second fixed rod 530, and the second fixed rod 530 is fixed with a slider 531; the two sliders 531 are located inside the horizontal trough 800 and are slidably connected to the horizontal trough 800; a liquid level 810 is fixed on the side of the horizontal trough 800 away from the rolling frame 500.

[0057] The present invention cooperates with the adjustment groove 540 and the horizontal detection mechanism to ensure that the two rolling racks 500 always remain horizontal, avoiding problems such as film distortion or wrinkles caused by subsequent film stretching, and at the same time, will not affect the flipping operation of the flipping mechanism 600; specifically, when the two rolling racks 500 are not in a horizontal state, the liquid level 810 will display the status. At this time, the pair of rolling racks 500 can be kept horizontal by controlling one of the adjustment motors 541; at the same time, when the flipping mechanism 600 performs a flipping operation, since the two sliders 531 are located inside the horizontal groove body 800 and are slidably connected to the horizontal groove body 800, the sliders 531 will adaptively slide inside the horizontal groove body 800 during the flipping process, so that the problem of jamming will not occur. Until the flipping is completed, the horizontal groove body 800 at the opposite end is still in a horizontal state, and horizontal detection can still be performed.

[0058] Furthermore, the first support frame 100 includes a base 110, and the film blowing machine die head 200 is fixedly installed on the base 110; support rods 120 are fixedly provided around the base 110, and the upper ends of the four support rods 120 are fixedly connected to a square frame 130;

[0059] The second support frame 300 includes a three-dimensional frame 310 and an intermediate rod 320. The four sides of the square frame 130 are fixedly connected to the three-dimensional frame 310 via the intermediate rod 320. The roller mechanism 400 is installed on the top of the three-dimensional frame 310. The first support frame 100 and the second support frame 300 facilitate the fixing of components and the transmission of the film.

[0060] A method for forming a film using the above-mentioned wrinkle-resistant plastic film forming device comprises the following steps:

[0061] S1. When the angles of the pair of rolling frames 500 need to be adjusted, the transmission motor 640 is controlled to change the angles of the pair of rolling frames 500 at the same speed.

[0062] S2. When the bottom opening between the pair of rolling frames 500 is too large, the adjustment motor 541 is first controlled to position the end of the second rotating shaft 621 above the adjustment slot 540. Then, the transmission motor 640 is controlled to adjust the angle of the pair of rolling frames 500 so that the bottom opening between the pair of rolling frames 500 changes faster than the top opening.

[0063] S3. When the top opening between the pair of rolling frames 500 is too large, the adjusting motor 541 is first controlled to position the end of the second rotating shaft 621 below the adjusting slot 540. Then, the transmission motor 640 is controlled to adjust the angle of the pair of rolling frames 500 so that the bottom opening between the pair of rolling frames 500 changes at a slower rate than the top opening.

[0064] S4. When the roller 520 at the top between the pair of rolling frames 500 is severely worn, the adjusting motor 541 is controlled to position the end of the second rotating shaft 621 above the adjusting slot 540. The transmission motor 640 is then controlled to flip the pair of rolling frames 500. After flipping, the adjusting motor 541 is then used to coordinate control to maintain the previous angle of the rolling frames 500.

[0065] S5. The liquid level meter 810 of the level detection mechanism detects whether the two rolling frames 500 are in the same horizontal state, and the motor 541 is controlled to adjust the pair of rolling frames 500 to maintain the horizontal state.

[0066] The present invention realizes different angle adjustments of the rolling racks 500 through the structural design of the adjustment slot 540, so that the opening between the rolling racks 500 can be quickly adjusted, thereby improving production quality and further reducing the wrinkle problem in the film forming process; specifically, when the opening at the bottom between a pair of rolling racks 500 is too large, the end of the second rotating shaft 621 is first positioned above the adjustment slot 540 by controlling the adjustment motor 541, and then the pair of rolling racks 500 are changed in angle by controlling the transmission motor 640, so that the speed of changing the opening at the bottom between the pair of rolling racks 500 is greater than the speed of changing the opening at the top, thereby quickly adjusting the rolling racks. 500; when the opening at the top between a pair of rolling racks 500 is too large, the end of the second rotating shaft 621 is first located below the adjusting slot 540 by controlling the adjusting motor 541, and then the pair of rolling racks 500 are changed in angle by controlling the transmission motor 640, so that the opening at the bottom between the pair of rolling racks 500 changes at a speed less than the opening at the top, thereby quickly adjusting the opening between the rolling racks 500, and comprehensively realizing different angle adjustments of the rolling racks 500, so that the opening between the rolling racks 500 can be quickly adjusted, thereby improving production quality and further reducing wrinkle problems in the film forming process.

[0067] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this field, several improvements and changes can be made without departing from the creative concept of the present invention, which all fall within the scope of protection of the present invention.

Claims

1. A wrinkle-proof plastic film forming device, characterized in that: The invention comprises a first support frame (100), wherein a film blowing machine die head (200) is fixedly installed in the first support frame (100), and the film blowing machine die head (200) is used for extruding a tubular film; a second support frame (300) is fixedly installed on the top of the first support frame (100), and a pair of rolling frames (500) are provided in the second support frame (300), and the rolling frames (500) are used for supporting and stretching the tubular film; a turning mechanism (600) is fixedly installed in the second support frame (300), and the turning mechanism (600) is connected to the rolling frames (500), and the turning mechanism (600) is used to control the rotation and turning of the rolling frames (500); a roller mechanism (400) is installed on the top of the second support frame (300), and the roller mechanism (400) is used to flatten and pull the tubular film; The flip mechanism (600) comprises a gear box (610), the bottom of which is fixedly provided with a supporting foot (611), and the supporting foot (611) is fixedly connected to the second supporting frame (300); a driven gear (620) is provided on both sides of the interior of the gear box (610), and a driving gear (630) is provided between the two driven gears (620), and the driven gears (620) are meshed with the driving gear (630); a first rotating shaft (631) is fixedly connected to the driving gear (630), and first rotating holes (613) are correspondingly opened on both sides of the gear box (610), and both ends of the first rotating shaft (631) pass through the corresponding first rotating holes (613) and are rotatably connected thereto; a transmission motor (640) is fixedly installed on the outer wall of the gear box (610) through a bracket, and the output end of the transmission motor (640) is fixedly connected to one end of the first rotating shaft (631).

2. The wrinkle-resistant plastic film forming device according to claim 1, characterized in that: The rolling frame (500) comprises a support frame (510), the support frame (510) comprises two support plates (511), the middle portion between the two support plates (511) is fixedly connected via a fixing rod (512); a plurality of rollers (520) are rotatably connected between the two support plates (511), and the plurality of rollers (520) are evenly arranged at equal distances; an adjustment slot (540) is fixedly provided on the outer side of one of the support plates (511), rotation holes (543) are provided through both ends of the adjustment slot (540), and screw rods (542) are rotatably connected to the two rotation holes (543); an adjustment motor (541) is fixedly installed on the outer side of one end of the adjustment slot (540), and the output end of the adjustment motor (541) is fixedly connected to one end of the screw rod (542).

3. The wrinkle-resistant plastic film forming device according to claim 2, characterized in that: The driven gear (620) is fixedly connected to a second rotating shaft (621), and second rotating holes (612) are correspondingly opened on both sides of the gear box (610), and both ends of the second rotating shaft (621) pass through the corresponding second rotating holes (612) and are rotatably connected thereto; One end of the second rotating shaft (621) extends into the corresponding adjustment groove (540) and is slidably connected to the adjustment groove (540); a threaded hole (622) is formed on one end of the second rotating shaft (621) located inside the adjustment groove (540), and the threaded hole (622) is threadedly connected to the corresponding screw rod (542).

4. The wrinkle-resistant plastic film forming device according to claim 3, characterized in that: The number of teeth of the driven gear (620) is greater than the number of teeth of the driving gear (630).

5. The wrinkle-resistant plastic film forming device according to claim 4, characterized in that: The roller mechanism (400) comprises an active roller (410) and a driven roller (420), and fixed shafts (411) are fixedly provided at both ends of the active roller (410); an adjustment mechanism (700) is installed on the top of the second support frame (300), and the adjustment mechanism (700) comprises two mounting plates (710) symmetrically fixed at both ends of the top of the second support frame (300), and second rotation holes (760) are opened through the mounting plates (710), and the fixed shafts (411) at both ends of the active roller (410) pass through the corresponding second rotation holes (760) and are rotationally connected to the second rotation holes (760); a second motor (750) is fixedly installed on the outer side surface of the mounting plate (710), and the output end of the second motor (750) is fixedly connected to the fixed shaft (411) of the active roller (410).

6. The wrinkle-resistant plastic film forming device according to claim 5, characterized in that: A sliding groove (730) is provided through the mounting plate (710), the driven roller (420) is rotatably connected to the rotating shaft (421), and both ends of the rotating shaft (421) respectively pass through the corresponding sliding grooves (730) and are slidably connected to the sliding grooves (730); both ends of the rotating shaft (421) are fixedly connected to a transmission plate (422), one end of the mounting plate (710) is fixedly connected to a base plate (720), an electric telescopic rod (740) is fixedly installed on the base plate (720), and one end of the electric telescopic rod (740) is fixedly connected to the corresponding transmission plate (422).

7. The wrinkle-resistant plastic film forming device according to claim 6, characterized in that: A horizontal detection mechanism is provided on a side of a pair of the rolling frames (500) away from the flipping mechanism (600), the horizontal detection mechanism comprising a horizontal trough (800), one end of a support plate (511) away from the flipping mechanism (600) being fixedly connected to a second fixing rod (530), and a slider (531) being fixed to the second fixing rod (530); the two sliders (531) are located inside the horizontal trough (800) and are slidably connected to the horizontal trough (800); a liquid level (810) is fixedly provided on a side of the horizontal trough (800) away from the rolling frame (500).

8. The wrinkle-resistant plastic film forming device according to claim 1, characterized in that: The first support frame (100) includes a base (110), and the film blowing machine die head (200) is fixedly installed on the base (110); support rods (120) are fixedly provided around the base (110), and the upper ends of the four support rods (120) are fixedly connected to a square frame (130); The second support frame (300) comprises a three-dimensional frame (310) and an intermediate rod (320); the four sides of the square frame (130) are fixedly connected to the three-dimensional frame (310) via the intermediate rod (320); and the roller mechanism (400) is installed on the top of the three-dimensional frame (310).

9. A method for forming a film using the wrinkle-resistant plastic film forming device according to claim 8, characterized in that: The steps include: S1. When the angles of the pair of rolling frames (500) need to be adjusted, the transmission motor (640) is controlled so that the pair of rolling frames (500) change their angles at the same speed; S2. When the bottom opening between the pair of rolling frames (500) is too large, the end of the second rotating shaft (621) is first positioned above the adjusting slot (540) by controlling the adjusting motor (541), and then the angle of the pair of rolling frames (500) is changed by controlling the transmission motor (640), so that the speed of change of the bottom opening between the pair of rolling frames (500) is greater than the speed of change of the top opening; S3, when the opening at the top between the pair of rolling frames (500) is too large, firstly, the end of the second rotating shaft (621) is positioned below the adjusting slot (540) by controlling the adjusting motor (541), and then, the angle of the pair of rolling frames (500) is changed by controlling the transmission motor (640), so that the speed of change of the opening at the bottom between the pair of rolling frames (500) is slower than the speed of change of the opening at the top; S4. When the roller (520) at the top between the pair of rolling frames (500) is severely worn, the adjusting motor (541) is controlled to position the end of the second rotating shaft (621) above the adjusting slot (540), and then the transmission motor (640) is controlled to flip the pair of rolling frames (500). After flipping, the adjusting motor (541) is used to coordinate and control the rolling frames (500) to maintain the previous angle. S5. Using the liquid level meter (810) of the level detection mechanism to detect whether the two rolling frames (500) are in the same horizontal state, the pair of rolling frames (500) are kept horizontal by controlling the regulating motor (541).