Extrusion blow molding method production equipment for plastic film processing and processing method
By introducing lifting structure, expansion structure, edge inspection sensor and tension structure into plastic film processing equipment, the operation difficulty and maintenance obstacles caused by the height fixation of the membrane frame are solved, and the uniformity and flatness of the film are achieved, ensuring the production process stability and quality in.
Patent Information
- Application Number
- CN202411534143.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-31
- Publication Date
- 2024-12-13
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
The height of the membrane frame in existing plastic film processing equipment is fixed, which makes it difficult for staff to introduce the membrane during preliminary production, which increases the difficulty of operation, and requires additional measures to overcome height obstacles during daily maintenance.
An extrusion blow molding production equipment including lifting structure, expansion structure, edge detection sensor and tension structure was designed. The membrane frame height is adjusted by synchronous rotation through the servo motor drive transmission screw, and the pneumatic push rod and half gear are used to adjust the human body. The angle of the lever, the film position is detected and corrected in real time through the edge detection sensor and the deviation correction roller, and the film tension is maintained within a suitable range by using compression springs and tension rollers.
It realizes flexible adjustment of the height of the membrane frame, reduces the difficulty of initial film introduction operation, facilitates daily maintenance, improves the uniformity and flatness of the film, reduces uneven thickness and product waste, and ensures the stability of the film during the transmission process. and quality.
Smart Images
Figure CN119116312A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of plastic film processing, in particular to an extrusion blow molding production device and a processing method for plastic film processing. Background Art
[0002] Plastic film is a plastic product made of polymer synthetic materials. Its surface is flat, smooth and soft. It is widely used in packaging in food, medicine, chemical and other industries. Extrusion blow molding equipment used for plastic film processing is the main production tool for plastic film. It adopts a continuous production method and can efficiently produce a large amount of plastic film. At the same time, the automated control system can realize continuous feeding, processing and output, greatly improving production efficiency and output.
[0003] After searching, the Chinese patent application number 202211508502.6 discloses a temperature-controllable extrusion blow molding device for plastic film processing; it includes a base, an extruder, a preheating device, a cooling and molding device, and a winding device; the raw material is placed in a preheating tank, the preheating tank is located at the feed port of the extruder, a plurality of heating rods are provided, and are evenly distributed inside the preheating tube, the raw material is preheated by the heating rod, the screw rod is driven to rotate by the driving assembly, and the raw material is stirred to improve the preheating effect, and the raw material is driven to enter the feed port of the extruder at the same time, the raw material extruded by the extruder is blow-molded by the cooling and molding device, and the formed film is wound by the winding device to complete the processing. Since the raw material is preheated before entering the extruder, the extruder can heat the raw material to a molten state faster, improve the fluidity of the raw material, and make the raw material more uniform, thereby achieving the purpose of improving the extrusion quality of the raw material; The above patent still has the following shortcomings: it is not convenient to adjust the height of the film frame. Since the film frame is fixed in size and is set too high, it is inconvenient for the staff to perform film guiding operations on the molten plastic during the initial production of the plastic film, which increases the difficulty of operating the device. At the same time, when performing daily maintenance on the equipment, additional measures need to be taken to overcome the obstacles caused by the fixed height. Summary of the invention
[0004] The purpose of the present invention is to solve the problem that it is inconvenient to adjust the height of the film frame in the prior art. Since the film frame is fixed in size and is set too high, it is inconvenient for the staff to perform film guiding operations on the molten plastic during the initial production of the plastic film, which increases the difficulty of operating the device. At the same time, when performing daily maintenance on the equipment, additional measures need to be taken to overcome the obstacles caused by the fixed height. A kind of extrusion blow molding production equipment and processing method for plastic film processing is proposed.
[0005] In order to achieve the above object, the present invention adopts the following technical solutions: An extrusion blow molding production equipment for processing plastic film, comprising a base plate, and also comprising: An extruder is arranged on one side of the top of the bottom plate, and a film tube mold is arranged on one side of the extruder, a high-pressure air duct is connected to one side of the bottom end of the film tube mold, and a cooling air ring is connected to the top of the film tube mold; A winding frame is arranged on the other side of the top of the bottom plate, and a winding motor is installed on one side of the top of the winding frame; A film frame is arranged at the top of the bottom plate, and a movable plate is arranged inside the film frame, side frames are fixed on both sides of the bottom end of the movable plate, traction rollers are rotatably connected on both sides of the top end of the movable plate, and a herringbone frame is arranged at the bottom end of the movable plate; A lifting structure is arranged between the film frame and the movable plate, wherein the lifting structure includes a transmission screw rotatably connected to the inside of the film frame, a ball bearing installed between the transmission screw and the film frame, a movable seat sliding inside the film frame and threadedly connected to the transmission screw, a connecting cover sleeved on the outside of the film frame and connected to the movable seat, and a transmission assembly arranged at the top of the transmission screw; The expansion structure is arranged on both sides of the herringbone frame and is used to adjust the opening and closing angle of the herringbone frame; An edge detection sensor is arranged at the top end of one side of the moving plate, and the edge detection sensor is connected to the connecting cover; A connecting frame is arranged at the bottom end of one side of the connecting cover shell, a top correction structure is arranged on one side of the connecting frame, a tensioning structure is arranged on one side of the connecting frame, and both ends of the tensioning structure are provided with limit frames connected to the connecting frame.
[0006] As a preferred technical solution of the present application, the transmission assembly includes a driving wheel fixed to the top of the transmission screw, an auxiliary transmission wheel installed at the top of two groups of driving wheels, a servo motor installed at the top of the inner top of the film frame, a main transmission wheel installed at the top of the film frame and connected to the output end of the servo motor, and an auxiliary wheel arranged on the outside of the main transmission wheel and rotatably connected to the film frame.
[0007] As a preferred technical solution of the present application, the auxiliary transmission wheel is connected to the main transmission wheel via a synchronous belt, and the transmission screw extends to the top of the film frame and is connected to the driving wheel.
[0008] As a preferred technical solution of the present application, the connection cover shell and the movable plate are welded into an integrated structure, and the connection cover shell and the membrane frame form a sliding structure.
[0009] As a preferred technical solution of the present application, the expansion structure includes a flip frame installed at the bottom end of the movable plate and connected to the herringbone frame, a connecting plate installed on one side of the herringbone frame, a second pneumatic push rod rotatably connected to one side of the connecting plate and connected to the movable plate, a slide groove fixed on both sides of the herringbone frame, a slider slidably connected inside the slide groove, a rocker arm rotatably connected to one side of the slider, and a half gear fixed on one side of the rocker arm and rotatably connected to the side frame.
[0010] As a preferred technical solution of the present application, the half gears are symmetrically distributed on the vertical center line of the herringbone frame, and two adjacent groups of the half gears are meshedly connected.
[0011] As a preferred technical solution of the present application, the correcting structure includes a rotating seat fixed at the top of one side of the connecting frame, a first pneumatic push rod installed on both sides of the rotating seat and rotatably connected to the connecting frame, a movable frame rotatably connected to the top of the first pneumatic push rod, and a correcting roller rotatably connected to the inside of the top of the movable frame. The tensioning structure includes a fixed frame fixed on one side of the connecting frame, a screw sliding inside the fixed frame, an adjusting bolt threadedly connected to one end of the screw, a pushing frame fixed at the other end of the screw, a tensioning roller rotatably connected to the inside of the pushing frame, and a compression spring installed between the pushing frame and the fixed frame.
[0012] As a preferred technical solution of the present application, the movable frame forms a rotating structure with the rotating seat and the connecting frame, and the pushing frame forms a telescopic structure with the fixed frame through a compression spring.
[0013] As a preferred technical solution of the present application, the extruder includes a gearbox fixed to one side of the top end of the base plate, an inner shell installed on one side of the film frame, a spiral blade shaft rotatably connected to the inside of the inner shell and connected to the output end of the gearbox, a heating shell sleeved on the outside of the inner shell, a feed port fixed to the top end of one side of the inner shell, and a drive motor installed at the input end of the gearbox.
[0014] The present application also discloses a processing method of an extrusion blow molding method for processing a plastic film, comprising the following steps: S1: Debugging and assembly: Place the device at the designated location, connect the high-pressure air duct to the factory compressed air pipeline, use the lifting structure to lower the height of the moving plate, and perform maintenance and cleaning on the various components inside the membrane frame; S2: Plastic extrusion: Pour the processed plastic particles into the inside of the feed port, so that the plastic particles fall into the inner shell, start the drive motor to drive the spiral blade shaft to rotate through the gearbox, stir the plastic particles, and at the same time, the heating shell heats the inner shell to melt the plastic particles, and the melted plastic is extruded through the opening on one side of the inner shell and enters the inside of the film tube mold; S3: Film drawing operation: by blowing high-pressure air into the inside of the film tube blank mold, the melted plastic forms a film bubble inside the film tube blank mold, the height of the moving plate is lowered by the lifting structure, and the film bubble is manually drawn through the herringbone frame, the traction roller, the edge detection sensor, the deviation correction structure, the tensioning structure, the limit frame and the winding frame in sequence, so as to continuously process the plastic film; S4: Film bubble treatment: After the traction is completed, the movable plate is moved to a suitable height, and sufficient space is reserved. The plastic film is pulled through the winding frame and the limit frame, so that the film bubble passes through the cooling air ring for cooling. At the same time, the herringbone frame stabilizes the film bubble, reduces its swing and shaking during the rising process, and gradually flattens it to improve the flatness and tightness of the film; S5: Film processing: The film bubble is guided by the traction roller, and the air inside the film bubble is squeezed to form a plastic film. At the same time, the edge detection sensor detects the position of the plastic film. When deviation occurs, the plastic film is corrected by the correction structure, and the plastic film is tensioned by the tensioning structure and the limit frame to improve the flatness of the plastic film. S6: Film winding: Cut off the defective film bubbles produced during the film drawing operation, and wind the complete plastic film on the outside of the winding roller. Install the winding roller inside the winding frame, and use the winding motor to drive the winding roller to rotate to wind the plastic film.
[0015] Compared with the prior art, the present invention provides an extrusion blow molding production equipment for plastic film processing, which has the following beneficial effects: 1. The extrusion blow molding production equipment for plastic film processing drives four sets of transmission screws to rotate synchronously through the servo motor through the main transmission wheel and the driving wheel, so that the moving seat drives the moving plate to move up and down through the connecting cover to adjust the height of the moving plate for film guiding or maintenance. The height adjustment function is realized, which is convenient for lowering the height in the early stage of film production to facilitate film guiding operation of the extruded plastic, and at the same time, the height is lowered to facilitate the staff to perform daily maintenance on the device; 2. The extrusion blow molding production equipment for processing plastic film uses the second pneumatic push rod to pull a group of herringbone frames to rotate around the flip frame through the connecting plate, and at the same time, the semi-gear drives another group of herringbone frames to flip through the rocker arm and the slider, thereby realizing the adjustment of the herringbone frames, facilitating the automatic adjustment of the angle of the herringbone frames, helping to improve the uniformity of the film, reducing the uneven thickness of the film, and allowing the device to adapt to the production needs of plastic films of different thicknesses, widths and specifications; 3. The extrusion blow molding production equipment for processing plastic film detects the movement of the film through the edge detection sensor, so that the controller controls the first pneumatic push rod to push the mobile frame to rotate around the rotating seat according to the direction of the deviation, so that the correction roller is tilted, so as to correct the position of the film, realize the mobile correction, and facilitate the real-time detection and correction of the film that is deviated during the transmission process, so as to ensure that the film can be stably transmitted along the predetermined path, avoiding waste and product quality problems in the production process; 4. The extrusion blow molding production equipment for plastic film processing uses a compression spring to push the push frame and the tension roller to move, bend the moving path of the film, and keep the film taut. At the same time, when the tension is too large, the compression spring shrinks due to the reaction, reducing the tension of the film, so that the tension on the surface of the film is within a certain range, realizing film tension, effectively preventing wrinkles and accumulation caused by relaxation of the film during transportation, and maintaining good flatness and stability of the film. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 This is one of the structural schematic diagrams of an extrusion blow molding production equipment for plastic film processing proposed by the present invention; Figure 2 This is a second structural schematic diagram of an extrusion blow molding production equipment for plastic film processing proposed by the present invention; Figure 3 A schematic diagram of a three-dimensional cross-sectional structure of an extruder in an extrusion blow molding production device for processing plastic film proposed by the present invention; Figure 4 A schematic diagram of the three-dimensional structure of a film frame in an extrusion blow molding production device for plastic film processing proposed by the present invention; Figure 5 A schematic diagram of a three-dimensional cross-sectional structure of a film frame in an extrusion blow molding production device for processing plastic film proposed by the present invention; Figure 6 A schematic diagram of a three-dimensional cross-sectional structure of a lifting structure in an extrusion blow molding production device for processing plastic film proposed by the present invention; Figure 7 A three-dimensional schematic diagram of an expansion structure in an extrusion blow molding production device for plastic film processing proposed by the present invention; Figure 8 Extrusion blow molding production equipment for plastic film processing proposed by the present invention Figure 7 Schematic diagram of the structure of part A; Fig. 9 A three-dimensional structural schematic diagram of a deviation-correcting structure in an extrusion blow molding production device for plastic film processing proposed by the present invention; Fig.10This is a three-dimensional structural schematic diagram of a tensioning structure in an extrusion blow molding production equipment for plastic film processing proposed by the present invention.
[0017] In the figure: 1. Bottom plate; 2. Gearbox; 3. Film frame; 4. Lifting structure; 401. Transmission screw; 402. Auxiliary transmission wheel; 403. Servo motor; 404. Main transmission wheel; 405. Auxiliary wheel; 406. Driving wheel; 407. Moving seat; 408. Connecting cover; 409. Ball bearing; 5. Moving plate; 6. Edge detection sensor; 7. Correction structure; 701. Correction roller; 702. First pneumatic push rod; 703. Rotating seat; 704. Moving frame; 8. Tensioning structure; 801. Tensioning roller; 802. Push frame; 803. Screw; 804. Fixed frame ;805, adjusting bolt;806, compression spring;9, expansion structure;901, connecting plate;902, second pneumatic push rod;903, turning frame;904, half gear;905, rocker arm;906, slide groove;907, slider;10, limit frame;11, winding motor;12, winding frame;13, high-pressure air duct;14, mold for film tube blank;15, cooling air ring;16, feed port;17, heating shell;18, spiral blade shaft;19, inner shell;20, driving motor;21, connecting frame;22, herringbone frame;23, side frame;24, traction roller. DETAILED DESCRIPTION
[0018] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making creative work are within the scope of protection of the present invention.
[0019] like Figures 1 to 10 As shown, an embodiment of the present invention provides an extrusion blow molding production device for processing plastic film, comprising a base plate 1, and further comprising: An extruder is arranged on one side of the top of the bottom plate 1, and a film tube mold 14 is arranged on one side of the extruder, a high-pressure air duct 13 is connected to one side of the bottom of the film tube mold 14, and a cooling air ring 15 is connected to the top of the film tube mold 14; the plastic particles are melted by the extruder so that the film tube mold 14 can blow the plastic liquid into a plastic film; The winding frame 12 is arranged on the other side of the top of the bottom plate 1, and a winding motor 11 is installed on one side of the top of the winding frame 12, so as to automatically wind up the film and pull the film to move; The film frame 3 is arranged at the top of the bottom plate 1, and a movable plate 5 is arranged inside the film frame 3, side frames 23 are fixed on both sides of the bottom end of the movable plate 5, traction rollers 24 are rotatably connected to both sides of the top end of the movable plate 5, and a herringbone frame 22 is arranged at the bottom end of the movable plate 5; The lifting structure 4 is arranged between the film frame 3 and the movable plate 5, wherein the lifting structure 4 includes a transmission screw 401 rotatably connected to the inside of the film frame 3, a ball bearing 409 installed between the transmission screw 401 and the film frame 3, a movable seat 407 sliding inside the film frame 3 and threadedly connected to the transmission screw 401, a connecting cover 408 sleeved on the outside of the film frame 3 and connected to the movable seat 407, and a transmission assembly arranged at the top of the transmission screw 401; the height of the movable plate 5 is adjusted by the lifting structure 4, and the height of the entire device is adjusted to facilitate the staff to perform daily maintenance on the device; The expansion structure 9 is arranged on both sides of the herringbone frame 22, and is used to adjust the opening and closing angle of the herringbone frame 22; allowing the device to adapt to the production requirements of plastic films of different thicknesses, widths and specifications; The edge detection sensor 6 is arranged at the top of one side of the moving plate 5, and the edge detection sensor 6 is connected to the connecting cover 408; the edge detection sensor 6 monitors the film position in real time, so as to adjust the film using the correction structure 7; The connecting frame 21 is arranged at the bottom end of one side of the connecting cover shell 408, and the top end of the connecting frame 21 is provided with a correcting structure 7. A tensioning structure 8 is provided on one side of the connecting frame 21, and both ends of the tensioning structure 8 are provided with limit frames 10 connected to the connecting frame 21; the correcting structure 7 ensures that the film can be stably transmitted along a predetermined path, and the tensioning structure 8 tensions the film to prevent wrinkles, accumulation and other problems caused by relaxation of the film during transportation.
[0020] like Figure 5 and Figure 6 As shown, in one embodiment: the transmission assembly includes a driving wheel 406 fixed to the top of a transmission screw 401, an auxiliary transmission wheel 402 installed at the top of two groups of driving wheels 406, a servo motor 403 installed at the top of the inner part of the film frame 3, a main transmission wheel 404 installed at the top of the film frame 3 and connected to the output end of the servo motor 403, and an auxiliary wheel 405 arranged on the outside of the main transmission wheel 404 and rotatably connected to the film frame 3; the main transmission wheel 404 is driven by the servo motor 403 through a synchronous belt to drive the auxiliary transmission wheels 402 and the driving wheel 406 on both sides to rotate, so that the four groups of transmission screws 401 simultaneously drive the moving seat 407 to move up and down to adjust the height of the moving plate 5 for film guiding or maintenance.
[0021] like Figure 5 and Figure 6As shown, in one embodiment: the auxiliary transmission wheel 402 is connected to the main transmission wheel 404 through a synchronous belt, and the transmission screw 401 extends to the top of the film frame 3 and is connected to the driving wheel 406; when in use, the main transmission wheel 404 drives the auxiliary transmission wheels 402 and the driving wheel 406 on the left and right sides to rotate through the synchronous belt.
[0022] like Figure 5 and Figure 6 As shown, in one embodiment: the connecting cover 408 and the movable plate 5 are welded into an integrated structure, and the connecting cover 408 and the film frame 3 form a sliding structure; by sliding the connecting cover 408 on the outside of the film frame 3, the movable plate 5 can be lifted and lowered smoothly without shaking.
[0023] like Figure 7 and Figure 8 As shown, in one embodiment: the expansion structure 9 includes a flip frame 903 installed at the bottom end of the moving plate 5 and connected to the herringbone frame 22, a connecting plate 901 installed on one side of the herringbone frame 22, a second pneumatic push rod 902 rotatably connected to one side of the connecting plate 901 and connected to the moving plate 5, a slide 906 fixed on both sides of the herringbone frame 22, a slider 907 slidably connected inside the slide 906, a rocker arm 905 rotatably connected to one side of the slider 907, and a half gear 904 fixed on one side of the rocker arm 905 and rotatably connected to the side frame 23; the second pneumatic push rod 902 is contracted to pull a group of herringbone frames 22 to rotate, and at the same time, as the herringbone frames 22 move, the half gear 904 and the rocker arm 905 cooperate with the slider 907 to slide inside the slide 906, so that the left and right groups of herringbone frames 22 are synchronously flipped, so that the herringbone frames 22 can process film bubbles of different sizes.
[0024] like Figure 7 and Figure 8 As shown, in one embodiment: the half gears 904 are symmetrically distributed on the vertical center line of the herringbone frame 22, and two adjacent groups of half gears 904 are meshedly connected; through the meshing connection of the left and right groups of half gears 904, the left and right groups of herringbone frames 22 are driven to flip at the same time.
[0025] like Fig. 9 and Fig.10As shown, in one embodiment: the deviation correction structure 7 includes a rotating seat 703 fixed to the top of one side of the connecting frame 21, a first pneumatic push rod 702 installed on both sides of the rotating seat 703 and rotatably connected to the connecting frame 21, a mobile frame 704 rotatably connected to the top of the first pneumatic push rod 702, and a deviation correction roller 701 rotatably connected to the inside of the top of the mobile frame 704, and the tensioning structure 8 includes a fixed frame 804 fixed to one side of the connecting frame 21, a screw 803 sliding inside the fixed frame 804, an adjusting bolt 805 threadedly connected to one end of the screw 803, and a screw 806 fixed to the screw 806. The push frame 802 at the other end of the rod 803, the tensioning roller 801 rotatably connected to the inside of the push frame 802, and the compression spring 806 installed between the push frame 802 and the fixed frame 804; by controlling the first pneumatic push rod 702 to contract or extend, the movable frame 704 is driven to rotate around the rotating seat 703, so that the deviation correction roller 701 is tilted, which is convenient for real-time detection and correction of the film that has deviated during the transmission process. The compressed compression spring 806 pushes the push frame 802 and the tensioning roller 801 to move, so that the film remains in a taut state and maintains a good flatness and stability of the film.
[0026] like Fig. 9 and Fig.10 As shown, in one embodiment: the movable frame 704 forms a rotating structure with the rotating seat 703 and the connecting frame 21, and the pushing frame 802 forms a telescopic structure with the fixed frame 804 through the compression spring 806; the movable frame 704 rotates around the rotating seat 703 to facilitate the adjustment of the angle of the deviation correction roller 701.
[0027] like Figure 3 As shown, in one embodiment: the extruder is fixed to a gearbox 2 on one side of the top of the base plate 1, an inner shell 19 is installed on one side of the film frame 3, a spiral blade shaft 18 is rotatably connected to the inside of the inner shell 19 and connected to the output end of the gearbox 2, a heating shell 17 is sleeved on the outside of the inner shell 19, a feed port 16 is fixed to the top of one side of the inner shell 19, and a drive motor 20 is installed at the input end of the gearbox 2.
[0028] Specifically, when the extrusion blow molding production equipment for plastic film processing is used: the whole set of equipment is placed at a designated location, and the high-pressure air duct 13 is ensured to be connected to the compressed air pipeline of the factory. Subsequently, the height of the movable plate 5 is lowered by means of the lifting structure 4 so as to perform comprehensive and detailed maintenance and cleaning of the core components inside the film frame 3 to ensure that the equipment is in the best working condition. The pre-treated plastic particles are slowly poured into the feed port 16, and the particles naturally slide into the inner shell 19. The drive motor 20 is started to make the gearbox 2 drive the spiral blade shaft 18 to rotate at a high speed, effectively stirring the plastic particles. At the same time, the heating shell 17 evenly heats the inner shell 19, so that the plastic particles melt rapidly and are squeezed out from the opening on one side of the inner shell 19 into the receiving area of the film tube mold 14. High-pressure air is injected into the high-pressure air duct 13, and the air pressure is used to make the melted plastic form a stable film bubble in the inner cavity of the film tube mold 14. The height of the movable plate 5 is lowered by means of the lifting structure 4 so as to manually pull the film bubble so that it can smoothly pass through the herringbone frame 22, the pulling roller 24, the edge detection sensor 6, the deviation correction structure 7, the tensioning structure 8, the limit frame 10 and the winding frame 12 in sequence. The processing unit adjusts the movable plate 5 to an appropriate height after completing the traction, and reserves sufficient space for the subsequent processing of the film bubble. The film bubble is pulled through the cooling air ring 15 by the winding frame 12 for rapid cooling. At the same time, the herringbone frame 22 reduces the swing and shaking of the film bubble, and gradually flattens it, significantly improving the flatness and tightness of the film. The film bubble is accurately guided by the guiding mechanism of the traction roller 24, and the internal air is expelled by squeezing to make the film more compact. The edge detection sensor 6 monitors the film position in real time. Once an offset is found, the deviation correction structure 7 is started to make adjustments. In addition, the tensioning structure 8 and the tensioning mechanism of the limit frame 10 work together to further improve the flatness of the film, cut off the defective film bubbles generated during the film guiding process, and tightly wind the complete plastic film on the winding roller. The winding roller is installed inside the winding frame 12, and the winding motor 11 drive system is started to drive the winding roller to rotate at a uniform speed, and the winding of the plastic film is efficiently completed, and the processing of the plastic film is completed; When adjusting the height, the servo motor 403 is started to drive the main transmission wheel 404 to rotate, and the main transmission wheel 404 drives the left and right auxiliary transmission wheels 402 to rotate through the synchronous belt and drives the two sets of driving wheels 406 to rotate. At the same time, the driving wheel 406 drives the adjacent driving wheels 406 to rotate through the transmission belt, so that the four sets of transmission screws 401 rotate at the same time, and then the moving seat 407 converts the rotational motion into a lifting motion through the thread on the surface of the transmission screw 401, so that the moving seat 407 drives the moving plate 5 to move up and down through the connecting cover 408 to adjust the height of the moving plate 5, so as to facilitate film guiding or maintenance, and reduce the friction between the transmission screw 401 and the film frame 3 through the ball bearing 409, and limit the path of the synchronous belt through the auxiliary wheel 405, so as to increase the contact area between the synchronous belt and the main transmission wheel 404, and ensure the transmission of power, so that the main transmission wheel 404 drives the two sets of auxiliary transmission wheels 402 to rotate at the same time; When adjusting the angle of the herringbone frame 22, the second pneumatic push rod 902 is started to contract, so that the second pneumatic push rod 902 pulls a group of herringbone frames 22 to rotate around the flip frame 903 through the connecting plate 901. At the same time, as the herringbone frame 22 moves, a group of half gears 904 drags the slider 907 through the rocker arm 905 to slide inside the slide groove 906, and the half gears 904 rotate with the movement of the herringbone frame 22. Then, by using the meshing of the teeth, one group of half gears 904 drives another group of half gears 904 to rotate synchronously. At the same time, the other group of half gears 904 pushes the slider 907 to slide inside the slide groove 906, thereby driving another group of herringbone frames 22 to flip, so that the left and right groups of herringbone frames 22 are synchronously flipped and adjusted in the process of contraction of the second pneumatic push rod 902, so that the herringbone frames 22 can process film bubbles of different sizes; During the movement of the film, the edge detection sensor 6 detects the movement of the film. When the edge detection sensor 6 detects that the film position is offset, the data is fed back to the controller, so that the controller controls a group of first pneumatic push rods 702 to contract or extend according to the direction of the offset, so that the first pneumatic push rods 702 drive the moving frame 704 to rotate around the rotating seat 703, so that the deviation correction roller 701 is tilted, so as to correct the position of the film. When the edge detection sensor 6 detects that the film position is normal, the controller controls the first pneumatic push rods 702 to reset, so that the deviation correction roller 701 is placed horizontally; When the film moves between the two sets of limit frames 10, the compressed compression spring 806 pushes the push frame 802 and the tensioning roller 801 to move, so that the tensioning roller 801 bends the moving path of the film and applies a thrust to the surface of the film to keep the film in a taut state. At the same time, when the tension is too large, the film can react to the compression spring 806 through the push frame 802 to reduce the tension of the film, so that the tension on the surface of the film is within a certain range, thereby ensuring the quality of the film. The screw 803 slides inside the fixed frame 804 to guide the movement of the push frame 802, so that the tensioning roller 801 is not easy to shake. The push frame 802 is pulled toward the fixed frame 804 by rotating the adjusting bolt 805, so that the fixed frame 804 squeezes the compression spring 806 to adjust the elastic force of the compression spring 806.
[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.
Claims
1. An extrusion blow molding production equipment for processing plastic film, comprising a base plate (1), characterized in that: Also includes: An extruder is arranged on one side of the top of the bottom plate (1), and a film tube mold (14) is arranged on one side of the extruder, a high-pressure air duct (13) is connected to one side of the bottom end of the film tube mold (14), and a cooling air ring (15) is connected to the top end of the film tube mold (14); A winding frame (12) is arranged on the other side of the top of the bottom plate (1), and a winding motor (11) is installed on one side of the top of the winding frame (12); A film frame (3) is arranged at the top of the bottom plate (1), and a movable plate (5) is arranged inside the film frame (3), side frames (23) are fixed on both sides of the bottom end of the movable plate (5), traction rollers (24) are rotatably connected on both sides of the top end of the movable plate (5), and a herringbone frame (22) is arranged at the bottom end of the movable plate (5); A lifting structure (4) is arranged between the film frame (3) and the movable plate (5), wherein the lifting structure (4) comprises a transmission screw (401) rotatably connected to the inside of the film frame (3), a ball bearing (409) installed between the transmission screw (401) and the film frame (3), a movable seat (407) sliding inside the film frame (3) and threadedly connected to the transmission screw (401), a connecting cover (408) sleeved on the outside of the film frame (3) and connected to the movable seat (407), and a transmission assembly arranged at the top of the transmission screw (401); An expansion structure (9) is arranged on both sides of the herringbone frame (22) and is used to adjust the opening and closing angle of the herringbone frame (22); An edge detection sensor (6) is arranged at the top end of one side of the movable plate (5), and the edge detection sensor (6) is connected to the connecting cover (408); A connecting frame (21) is arranged at the bottom end of one side of the connecting cover (408), a top end correction structure (7) is provided on one side of the connecting frame (21), a tensioning structure (8) is provided on one side of the connecting frame (21), and both ends of the tensioning structure (8) are provided with limit frames (10) connected to the connecting frame (21).
2. The extrusion blow molding production equipment for plastic film processing according to claim 1, characterized in that: The transmission assembly comprises a driving wheel (406) fixed to the top of a driving screw (401), an auxiliary driving wheel (402) mounted on the top of two sets of driving wheels (406), a servo motor (403) mounted on the top of the inner side of the film frame (3), a main driving wheel (404) mounted on the top of the film frame (3) and connected to the output end of the servo motor (403), and an auxiliary wheel (405) arranged on the outside of the main driving wheel (404) and rotatably connected to the film frame (3).
3. The extrusion blow molding production equipment for plastic film processing according to claim 2, characterized in that: The auxiliary transmission wheel (402) is connected to the main transmission wheel (404) via a synchronous belt, and the transmission screw (401) extends to the top end of the film frame (3) and is connected to the driving wheel (406).
4. The extrusion blow molding production equipment for plastic film processing according to claim 2, characterized in that: The connection cover (408) and the movable plate (5) form a welded integrated structure, and the connection cover (408) and the membrane frame (3) form a sliding structure.
5. The extrusion blow molding production equipment for plastic film processing according to claim 1, characterized in that: The expansion structure (9) comprises a flip frame (903) mounted on the bottom end of the moving plate (5) and connected to the herringbone frame (22), a connecting plate (901) mounted on one side of the herringbone frame (22), a second pneumatic push rod (902) rotatably connected to one side of the connecting plate (901) and connected to the moving plate (5), a slide groove (906) fixed on both sides of the herringbone frame (22), a slider (907) slidably connected inside the slide groove (906), a rocker arm (905) rotatably connected to one side of the slider (907), and a half gear (904) fixed on one side of the rocker arm (905) and rotatably connected to the side frame (23).
6. The extrusion blow molding production equipment for plastic film processing according to claim 5, characterized in that: The half gears (904) are symmetrically distributed on the vertical center line of the herringbone frame (22), and two adjacent groups of the half gears (904) are meshedly connected.
7. The extrusion blow molding production equipment for plastic film processing according to claim 1, characterized in that: The deflection correction structure (7) comprises a rotating seat (703) fixed at the top of one side of the connecting frame (21), a first pneumatic push rod (702) installed on both sides of the rotating seat (703) and rotatably connected to the connecting frame (21), a moving frame (704) rotatably connected to the top of the first pneumatic push rod (702), and a deflection correction roller (701) rotatably connected inside the top of the moving frame (704); the tensioning structure (8) comprises a fixed frame (804) fixed at one side of the connecting frame (21), a screw (803) sliding inside the fixed frame (804), an adjusting bolt (805) threadedly connected to one end of the screw (803), a pushing frame (802) fixed at the other end of the screw (803), a tensioning roller (801) rotatably connected inside the pushing frame (802), and a compression spring (806) installed between the pushing frame (802) and the fixed frame (804).
8. The extrusion blow molding production equipment for plastic film processing according to claim 7, characterized in that: The movable frame (704) forms a rotating structure with the rotating seat (703) and the connecting frame (21), and the pushing frame (802) forms a telescopic structure with the fixed frame (804) through the compression spring (806).
9. The extrusion blow molding production equipment for plastic film processing according to claim 1, characterized in that: The extruder comprises a gearbox (2) fixed to one side of the top end of the bottom plate (1), an inner shell (19) mounted on one side of the film frame (3), a spiral blade shaft (18) rotatably connected to the inside of the inner shell (19) and connected to the output end of the gearbox (2), a heating shell (17) sleeved on the outside of the inner shell (19), a feed port (16) fixed to the top end of one side of the inner shell (19), and a drive motor (20) mounted on the input end of the gearbox (2).
10. The extrusion blow molding method for processing a plastic film according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1: Debugging and assembling: placing the device at the designated location, connecting the high-pressure air duct (13) to the factory compressed air pipeline, and using the lifting structure (4) to lower the height of the moving plate (5), and performing maintenance and cleaning on the various components inside the membrane frame (3); S2: Plastic extrusion: Pour the processed plastic particles into the inside of the feed port (16) so that the plastic particles fall into the inner shell (19), start the drive motor (20) to drive the spiral blade shaft (18) to rotate through the gearbox (2), stir the plastic particles, and at the same time, the heating shell (17) heats the inner shell (19) to melt the plastic particles, and the melted plastic is extruded through the opening on one side of the inner shell (19) and enters the inside of the film tube mold (14); S3: film drawing operation: high-pressure air is blown into the film tube mold (14) to form a film bubble inside the film tube mold (14) by melting the plastic, and the height of the movable plate (5) is lowered by using the lifting structure (4). The film bubble is manually drawn and processed to pass through the herringbone frame (22), the traction roller (24), the edge detection sensor (6), the deviation correction structure (7), the tensioning structure (8), the limit frame (10) and the winding frame (12) in sequence, so as to continuously process the plastic film; S4: film bubble treatment: after the traction is completed, the movable plate (5) is moved to a suitable height, leaving enough space, and the plastic film is pulled by the winding frame (12) and the limiting frame (10), so that the film bubble passes through the cooling air ring (15) for cooling, and at the same time, the herringbone frame (22) stabilizes the film bubble, reduces its swing and shaking during the rising process, and gradually flattens it to improve the flatness and tightness of the film; S5: film processing: the film bubble is guided by the traction roller (24), and the air inside the film bubble is squeezed out to form a plastic film. At the same time, the edge detection sensor (6) detects the position of the plastic film. When a deviation occurs, the plastic film is corrected by the correction structure (7), and the plastic film is tensioned by the tensioning structure (8) and the limit frame (10) to improve the flatness of the plastic film. S6: Film winding: The defective film bubbles generated during the film drawing operation are cut off, and the complete plastic film is wound around the outside of the winding roller, and the winding roller is installed inside the winding frame (12). The winding motor (11) is used to drive the winding roller to rotate and wind the plastic film.