A film wall thickness detection device

Abstract

The invention discloses a film wall thickness detection device, comprising a frame, a film thickness detection mechanism, a flattening roller, a first driving mechanism, a second driving mechanism and a controller. The film thickness detection mechanism, the first threaded roller, the second threaded roller, the first driving mechanism cooperate with the second driving mechanism in the invention. When the film has abnormal thickness during the winding process, the controller controls the piston rod of the electric push rod to extend, thereby causing the first threaded roller to move upward and press on the lower surface of the film, and at the same time causing the second threaded roller to move downward and press on the upper surface of the film, thereby causing the wrinkled part in the middle of the film to be pulled and unfolded, and at the same time controlling the rotation of the rotating shaft of the motor, thereby driving the first threaded roller and the second threaded roller to rotate, the threads at both ends of the first threaded roller and the threads at both ends of the second threaded roller flatten the bottom edge wrinkles of the film and the top edge wrinkles of the film to both sides of the film, and the whole process does not need to stop the receiving roller, thereby ensuring the film production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of film wall thickness detection, in particular to a film wall thickness detection device. Background Art

[0002] As a functional material, film has been widely used in packaging, agriculture, industry and many other fields. Film can be divided into polyethylene film, polypropylene film, polyvinyl chloride film and polyester film according to different raw materials, and can be divided into blown film, cast film and calendered film according to different molding methods. CPP blown film is polypropylene blown film, which has a wide range of applications in the market. Since the thickness of the film reflects its pressure tolerance and weight, it is an important quality inspection indicator. Therefore, in the process of processing CPP blown film, in order to ensure that its quality meets the standards, one of the processes is to test the thickness of CPP blown film.

[0003] The Chinese patent with the announcement number CN113310418B discloses a wall thickness detection device for CPP blown film, including a base, a fixed plate is horizontally fixed on the top of the base through brackets on both sides of the base, and the two sides of the fixed plate are respectively fixed with limit rods vertically through connecting blocks, and a slider is slid on the limit rod, and a support plate is horizontally fixed between the two sliders on the slider through a fixed block, the support plate is between the base and the fixed plate, and a detection plate is arranged on the support plate, and a plurality of infrared detectors are arranged on the detection plate, and arc-shaped rotation is arranged on both sides of each infrared detector. shaped expansion piece, a spring piece is arranged between the expansion piece and the detection plate, a contact block corresponding to the expansion piece is rotatably arranged on the infrared detector, an axis block is fixed on the contact block, a cylinder is arranged on the detection plate corresponding to the axis block, an axis roller is arranged at the bottom of the fixed plate, motors are respectively fixed on both sides of the fixed plate through stabilizing blocks, and a rotating rod is fixed on the output end of the motor, and the rotating rod is slidably connected with the slider, a hydraulic rod is fixed upward on the fixed block, and a pressure roller is fixed on the output end of the hydraulic rod; the film is transmitted on the axis roller on the fixed plate, and the thickness of the passing film is detected by several infrared detectors at the same time.

[0004] The wall thickness detection device of the above-mentioned film, when detecting abnormal film thickness, lights up the alarm light corresponding to the infrared detector, and at the same time, starts the cylinders on the left and right of the infrared detector which detects abnormal film thickness, drives the shaft block and the contact block to rotate, pushes out the expansion sheet, and expands the film at the abnormal thickness to eliminate wrinkles and conduct re-detection, thus solving the problem of wrinkling or uneven end surface of the film when the winder pulls the film during the film production process due to the pulling speed, tension or uneven thickness of the film.

[0005] However, in actual use, due to the reasons such as the pulling speed, tension or uneven thickness of the film when the film is pulled by the winder, not only wrinkles will appear, but also the edges of the film will be folded upward or downward when the film is rolled up. The wall thickness detection device of the film is unable to eliminate the upward or downward folds on the edges of the film.

[0006] Moreover, when eliminating wrinkles, the hydraulic rod drives the pressure roller to press the film onto the detection plate, and at the same time, the motor drives the rotating rod, so that the slider drives the support plate to descend. At the same time, the alarm light corresponding to the infrared detector that detects abnormal film thickness lights up, and at the same time, the cylinders on the left and right of the infrared detector that detects abnormal film thickness are started, driving the shaft block and the contact block to rotate, and pushing out the expansion sheet, so that the film at the abnormal thickness is expanded to eliminate wrinkles. This process is to avoid the film being torn apart by the traction force of the winder after the hydraulic rod drives the pressure roller to press the film onto the detection plate, and the winder needs to be stopped, thereby reducing the film production efficiency.

[0007] Therefore, a film wall thickness detection device is proposed. Summary of the invention

[0008] An object of the present invention is to provide a thin film wall thickness detection device, so as to solve or at least alleviate one or more of the above-mentioned problems and other problems existing in the prior art.

[0009] To achieve the above object, the present invention provides the following technical solution: a film wall thickness detection device, comprising:

[0010] A frame, wherein the frame is arranged between the film blowing machine and the film receiving roller;

[0011] A film thickness detection mechanism, the film thickness detection mechanism is arranged on the frame, and the film thickness detection mechanism is used to measure the film thickness in real time;

[0012] A flattening roller, the flattening roller is rotatably mounted on the frame, the flattening roller comprises a first threaded roller and a second threaded roller, the first threaded roller is used to flatten the wrinkles on the lower surface of the film, and the second threaded roller is used to flatten the wrinkles on the upper surface of the film;

[0013] A first driving mechanism, the first driving mechanism is arranged on one side of the frame, and the first driving mechanism is used to drive the first thread roller and the second thread roller to rotate;

[0014] a second driving mechanism, the second driving mechanism being arranged at the other side of the frame, the second driving mechanism being used for driving the first threaded roller to move upwards and press against the lower surface of the film, and driving the second threaded roller to move downwards and press against the upper surface of the film;

[0015] A controller is fixedly mounted on the frame, the film thickness detection mechanism transmits the detected film thickness signal to the controller, and the first driving mechanism and the second driving mechanism are both controlled by the controller.

[0016] In a film wall thickness detection device according to the present invention, optionally, the frame includes a base and a vertical plate, two vertical plates are provided, and the two vertical plates are symmetrically fixedly installed on the top of the base;

[0017] The film thickness detection mechanisms are provided with two, and the two film thickness detection mechanisms are respectively arranged at the feed port and the discharge port of the frame, and the two film thickness detection mechanisms each include a detection plate, and the detection plate is fixedly installed between the two vertical plates, and a plurality of thickness detection sensors for detecting the film thickness are fixedly installed at equal intervals at the bottom of the detection plate;

[0018] The second driving mechanism includes two mounting plates and an electric push rod, wherein one of the mounting plates is rotatably mounted on one side of one of the vertical plates, and the other mounting plate is rotatably mounted on one side of the other vertical plate. Both ends of the mounting plates are rotatably mounted with rotating shafts through bearings. Two arc-shaped slide grooves are provided on the vertical plates, and the two rotating shafts are slidably arranged in the two arc-shaped slide grooves respectively. Disassembly and assembly mechanisms are arranged at both ends of the rotating shafts. The first threaded roller is fixedly mounted between one group of two opposite disassembly and assembly mechanisms, and the second threaded roller is fixedly mounted between another group of two opposite disassembly and assembly mechanisms. An upper hinge seat is fixedly connected to the bottom of one end of one of the mounting plates. The lifting of the ...

[0019] The first driving mechanism comprises a motor, a first synchronous wheel, a second synchronous wheel, a third synchronous wheel and a fourth synchronous wheel, the motor is fixedly mounted on the top of the base, the first synchronous wheel is fixedly connected to the rotating shaft of the motor, the second synchronous wheel and the third synchronous wheel are both fixedly sleeved on the rotating shaft at one end of the first threaded roller, the fourth synchronous wheel is fixedly sleeved on the rotating shaft at one end of the second threaded roller, the first synchronous wheel and the second synchronous wheel are connected by a first synchronous belt transmission, the third synchronous wheel and the fourth synchronous wheel are connected by a second synchronous belt transmission, and a traction tensioning mechanism for maintaining the tension of the first synchronous belt is provided on one side of the vertical plate;

[0020] The thickness detection sensor is electrically connected to a signal input terminal of the controller, and both the motor and the electric push rod are controlled by the controller.

[0021] In a film wall thickness detection device according to the present invention, optionally, the disassembly and assembly mechanism includes a sleeve, one end of the sleeve is open, the end of the sleeve away from its opening is slidably sleeved on the end of the rotating shaft away from the mounting plate, the end of the sleeve away from the mounting plate is formed with a flange, an annular block is fixedly connected to the rotating shaft, the outer wall of the annular block is in sliding contact with the inner wall of the arc-shaped slide groove, the outer wall of the sleeve is sleeved with a locking spring, one end of the locking spring abuts against the bottom of the flange, and the other end of the locking spring abuts against the top of the annular block, a slot is provided on the inner wall of the opening of the sleeve, the end of the leveling roller is fixedly connected to a limiting block, and after the open end of the sleeve is sleeved on the end of the leveling roller, the limiting block is inserted into the slot.

[0022] In a film wall thickness detection device according to the present invention, optionally, a flat groove is formed at one end of the rotating shaft away from the mounting plate, and a flat cut is formed at one end of the sleeve away from the flange, and the flat cut is slidably engaged in the flat groove.

[0023] In a film wall thickness detection device according to the present invention, optionally, a stopper for preventing the sleeve from detaching from the rotating shaft is fixedly mounted on one end of the rotating shaft away from the mounting plate by bolts.

[0024] In a film wall thickness detection device according to the present invention, optionally, the traction and tensioning mechanism comprises a mounting seat, a mounting block, an L-shaped plate, a tensioning synchronous wheel, a mounting cylinder and a connecting rod, the mounting seat is fixedly mounted on one side of the vertical plate, the mounting block is fixedly mounted on the top of the mounting seat, one side of the mounting block is provided with a mounting hole, the mounting cylinder is detachably sleeved in the mounting hole, a slider is slidably arranged inside the mounting cylinder, one side of the slider is fixedly connected to one end of the connecting rod, the other end of the connecting rod slides through the mounting cylinder and is fixedly connected to one side of the L-shaped plate, the tensioning synchronous wheel is rotatably connected to the inner side of the L-shaped plate, the tensioning synchronous wheel is transmission-connected to the first synchronous belt, a tensioning spring is sleeved on the connecting rod, one end of the tensioning spring abuts against one side of the slider, and the other end of the tensioning spring abuts against the inner wall of one end of the mounting cylinder.

[0025] In a film wall thickness detection device according to the present invention, optionally, a guide rod is fixedly connected to one side of the L-shaped plate, a guide hole is opened on one side of the mounting block, and one end of the guide rod is slidably inserted into the guide hole.

[0026] In a film wall thickness detection device according to the present invention, optionally, a plurality of locking holes are equidistantly provided on the top of the mounting tube, a handle screw is threadedly mounted on the top of the mounting block, and the lower end of the handle screw can be inserted into the locking hole.

[0027] In a film wall thickness detection device according to the present invention, optionally, an alarm light and a speaker are fixedly installed on the top of the controller. When the thickness detection sensor located at the material discharge port of the frame detects that the thickness of the film is still abnormal, the controller controls the alarm light to emit a warning light, and controls the speaker to emit an alarm sound.

[0028] In a film wall thickness detection device according to the present invention, optionally, rollers and height-adjustable feet are installed at the four bottom corners of the base.

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] The present invention provides a film thickness detection mechanism, a first threaded roller, a second threaded roller, a first driving mechanism and a second driving mechanism. When the film has an abnormal thickness during the winding process, the controller controls the piston rod of the electric push rod to extend, thereby causing the first threaded roller to move upward and press on the lower surface of the film, and at the same time causing the second threaded roller to move downward and press on the upper surface of the film, thereby causing the wrinkled part in the middle of the film to be pulled and unfolded, and at the same time controlling the rotation shaft of the motor to rotate, thereby driving the first threaded roller and the second threaded roller to rotate, the threads at both ends of the first threaded roller and the threads at both ends of the second threaded roller flatten the wrinkles at the bottom edge of the film and the wrinkles at the top edge of the film to both sides of the film, and the whole process does not need to stop the receiving roller, thereby ensuring the film production efficiency;

[0031] The disassembly and assembly mechanism is set up to facilitate the installation and disassembly of the leveling roller, and the operation is convenient and quick;

[0032] The traction and tensioning mechanism provided can ensure that the first synchronous belt is always in a tensioned state when the mounting plate rotates, thereby preventing the first synchronous belt from being separated from the first synchronous wheel and the second synchronous wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] Figure 1 It is a structural schematic diagram of a film wall thickness detection device of the present invention;

[0034] Figure 2 It is a structural schematic diagram of another viewing angle of the film wall thickness detection device of the present invention;

[0035] Figure 3 It is a structural schematic diagram of a frame of a film wall thickness detection device of the present invention;

[0036] Figure 4 It is a partial structural schematic diagram of the film wall thickness detection device of the present invention;

[0037] Figure 5 It is a structural schematic diagram of the disassembly and assembly mechanism of the film wall thickness detection device of the present invention;

[0038] Figure 6 It is a structural schematic diagram of the leveling roller of the film wall thickness detection device of the present invention;

[0039] Figure 7 for Figure 2 A schematic diagram of the enlarged structure of part A;

[0040] Figure 8 It is a structural schematic diagram of the driving mechanism of the film wall thickness detection device of the present invention;

[0041] Fig. 9 It is a schematic cross-sectional structure diagram of the tension adjustment mechanism of the film wall thickness detection device of the present invention;

[0042] Fig.10 It is a schematic structural diagram of the distribution state of the first thread roller and the second thread roller of the film wall thickness detection device of the present invention when the film is normally rolled up;

[0043] Fig.11 It is a structural schematic diagram of the distribution state of the first thread roller and the second thread roller when the film wall thickness detection device of the present invention detects abnormal film thickness.

[0044] In the figure: 1, base; 101, vertical plate; 102, arc-shaped slide; 103, height-adjustable foot; 104, roller;

[0045] 2. Film thickness detection mechanism; 201. Detection plate; 202. Thickness detection sensor;

[0046] 3. Leveling roller; 301. First thread roller; 302. Second thread roller; 303. Limiting block;

[0047] 4. First driving mechanism; 401. Motor; 402. First synchronous wheel; 403. Second synchronous wheel; 404. Third synchronous wheel; 405. Fourth synchronous wheel; 406. First synchronous belt; 407. Second synchronous belt;

[0048] 5. Second driving mechanism; 501. Mounting plate; 502. Rotating shaft; 5021. Flat cut groove; 5022. Stopper; 5023. Ring block; 503. Electric push rod; 504. Lower rotating block; 505. Lower articulated seat; 506. Upper rotating block; 507. Upper articulated seat;

[0049] 6. Disassembly and assembly mechanism; 601. Sleeve; 6011. Flanging; 6012. Slot; 6013. Flat cut; 602. Locking spring.

[0050] 7. Controller; 701. Warning light; 702. Speaker;

[0051] 8. Traction tensioning mechanism; 801. Mounting seat; 802. Mounting block; 803. L-shaped plate; 804. Tensioning synchronous wheel; 805. Mounting cylinder; 8051. Locking hole; 806. Connecting rod; 807. Sliding block; 808. Tensioning spring; 809. Guide rod; 810. Handle screw. DETAILED DESCRIPTION

[0052] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Example 1

[0053] See also Figures 1 to 11 This embodiment provides a film wall thickness detection device, including: a frame, a film thickness detection mechanism 2, a leveling roller 3, a first driving mechanism 4, a second driving mechanism 5 and a controller 7.

[0054] Wherein, the frame is arranged between the film blowing machine and the film receiving roller;

[0055] Wherein, the film thickness detection mechanism 2 is arranged on the frame, and the film thickness detection mechanism 2 is used to measure the film thickness in real time;

[0056] The flattening roller 3 is rotatably mounted on the frame, and includes a first threaded roller 301 and a second threaded roller 302. The first threaded roller 301 is used to flatten the wrinkles on the lower surface of the film, and the second threaded roller 302 is used to flatten the wrinkles on the upper surface of the film.

[0057] The first driving mechanism 4 is arranged on one side of the frame, and the first driving mechanism 4 is used to drive the first thread roller 301 and the second thread roller 302 to rotate;

[0058] The second driving mechanism 5 is arranged on the other side of the frame, and is used to drive the first threaded roller 301 to move upward and press on the lower surface of the film, and at the same time drive the second threaded roller 302 to move downward and press on the upper surface of the film;

[0059] The controller 7 is fixedly mounted on the frame, the film thickness detection mechanism 2 transmits the detected film thickness signal to the controller 7 , and the first driving mechanism 4 and the second driving mechanism 5 are both controlled by the controller 7 .

[0060] In this embodiment, the rack includes a base 1 and a vertical plate 101. Two vertical plates 101 are provided. The two vertical plates 101 are symmetrically fixed on the top of the base 1. In order to facilitate the movement of the rack to meet the detection needs, rollers 104 and height-adjustable feet 103 are installed at the four corners of the bottom of the base 1. By setting the height-adjustable feet 103, the rack can be stabilized on the ground after the position adjustment of the rack is completed, so that the rollers 104 are suspended.

[0061] Among them, in this embodiment, two film thickness detection mechanisms 2 are provided, and the two film thickness detection mechanisms 2 are respectively arranged at the feed port and the discharge port of the frame, and the two film thickness detection mechanisms 2 include a detection plate 201, and the detection plate 201 is fixedly installed between the two vertical plates 101. A plurality of thickness detection sensors 202 for detecting the thickness of the film are fixedly installed at equal intervals on the bottom of the detection plate 201. The film thickness detection mechanism 2 arranged at the feed port of the frame can detect the thickness of the transmitted film, so as to facilitate the processing of the film with abnormal thickness. The film thickness detection mechanism 2 arranged at the discharge port of the frame can re-inspect the processed film.

[0062] Specifically, in this embodiment, the second driving mechanism 5 includes two mounting plates 501 and an electric push rod 503, one of the mounting plates 501 is rotatably mounted on one side of one of the vertical plates 101, and the other mounting plate 501 is rotatably mounted on one side of the other vertical plate 101, and both ends of the mounting plate 501 are rotatably mounted with a rotating shaft 502 through a bearing, two arc-shaped slide grooves 102 are provided on the vertical plate 101, and the two rotating shafts 502 are respectively slidably arranged in the two arc-shaped slide grooves 102, and both ends of the rotating shaft 502 are provided with a disassembly mechanism 6, the first threaded roller 301 is fixedly installed between one group of two opposite disassembly mechanisms 6, and the second threaded roller 302 is fixedly installed between the other group of two opposite disassembly mechanisms 6, and the bottom of one end of one of the mounting plates 501 is fixedly connected with an upper hinge seat 507, and the vertical plate 101 is provided with a plurality of rotating shafts 502, and the rotating shafts 502 are ... A lower hinge seat 505 is fixedly connected to one side of the plate 101, a lower rotating block 504 is rotatably connected to the lower hinge seat 505, an upper rotating block 506 is rotatably connected to the upper hinge seat 507, the bottom of the electric push rod 503 is fixedly connected to the top of the lower rotating block 504, the piston rod end of the electric push rod 503 is fixedly connected to the bottom of the upper rotating block 506, and the piston rod of the electric push rod 503 is controlled to extend, so that the end of the mounting plate 501 close to the first threaded roller 301 moves upward, driving the first threaded roller 301 to move upward and press on the lower surface of the film, and at the same time, the end of the mounting plate 501 away from the first threaded roller 301 moves downward, so that the second threaded roller 302 presses on the upper surface of the film, and the thread rotation directions at both ends of the first threaded roller 301 and the thread rotation directions at both ends of the second threaded roller 302 are oppositely set;

[0063] In this embodiment, the first driving mechanism 4 includes a motor 401, a first synchronous wheel 402, a second synchronous wheel 403, a third synchronous wheel 404 and a fourth synchronous wheel 405. The motor 401 is fixedly installed on the top of the base 1, the first synchronous wheel 402 is fixedly connected to the rotating shaft of the motor 401, the second synchronous wheel 403 and the third synchronous wheel 404 are both fixedly sleeved on the rotating shaft 502 at one end of the first threaded roller 301, and the fourth synchronous wheel 405 is fixedly sleeved on the rotating shaft 502 at one end of the second threaded roller 302. The first synchronous wheel 402 and the second synchronous wheel 403 are connected by a first synchronous belt 406, and the third synchronous wheel 404 and the fourth synchronous wheel 405 are connected by a second synchronous belt 407. A traction tensioning mechanism 8 for maintaining the tension of the first synchronous belt 406 is provided on one side of the vertical plate 101. The thickness detection sensor 202 is electrically connected to the signal input end of the controller 7. The motor 401 and the electric push rod 503 are both controlled by the controller 7.

[0064] By adopting the above technical scheme, when in use, the film flowing out of the blow molding machine is passed through between the first threaded roller 301 and the second threaded roller 302 and then wound onto the winding roller for winding operation. When the thickness detection sensor 202 at the machine feed port detects that the film thickness is abnormal, the controller 7 controls the piston rod of the electric push rod 503 to extend, thereby causing the first threaded roller 301 to move upward and press on the lower surface of the film, and at the same time causing the second threaded roller 302 to move downward and press on the upper surface of the film, thereby causing the wrinkled part in the middle of the film to be pulled and unfolded, and at the same time controlling the rotation shaft of the motor 401 to rotate, thereby driving the first threaded roller 301 and the second threaded roller 302 to rotate, and the threads at both ends of the first threaded roller 301 and the threads at both ends of the second threaded roller 302 flatten the wrinkles on the bottom edge of the film and the wrinkles on the top edge of the film to both sides of the film, and the whole process does not require the winding roller to be stopped, thereby ensuring the film production efficiency.

[0065] In this embodiment, in order to facilitate the disassembly and assembly of the leveling roller 3, the disassembly and assembly mechanism 6 includes a sleeve 601, one end of the sleeve 601 is open, and the end of the sleeve 601 away from the opening is slidably sleeved on the end of the rotating shaft 502 away from the mounting plate 501. In order to ensure that the sleeve 601 can rotate with the rotating shaft 502, a flat cut groove 5021 is provided at the end of the rotating shaft 502 away from the mounting plate 501, and a flat cut 6013 is provided at the end of the sleeve 601 away from the flange 6011. The flat cut 6013 is slidably engaged with the flat cut groove 5021. The sleeve 601 can slide along the axial direction of the rotating shaft 502 through the provided flat cut 6013 and the flat cut groove 5021, while preventing the sleeve 601 from rotating relative to the rotating shaft 502. The end of the sleeve 601 away from the mounting plate 501 is formed with a flange 6011, and an annular block 5023 is fixedly connected to the rotating shaft 502. The outer wall of 5023 is in sliding contact with the inner wall of the arc-shaped slide groove 102, and a locking spring 602 is sleeved on the outer wall of the sleeve 601. One end of the locking spring 602 abuts against the bottom of the flange 6011, and the other end of the locking spring 602 abuts against the top of the annular block 5023. A slot 6012 is provided on the inner wall of the opening of the sleeve 601. The end of the leveling roller 3 is fixedly connected to the limit block 303. After the open end of the sleeve 601 is sleeved on the end of the leveling roller 3, the limit block 303 is inserted in the slot 6012. By adopting the above technical solution, when the leveling roller 3 needs to be installed, the sleeve 601 is pressed in the direction close to the annular block 5023, and then one end of the leveling roller 3 is placed at the same height as the sleeve 601, and then the sleeve 601 is released. At this time, the sleeve 601 is sleeved on one end of the leveling roller 3 under the elastic force of the locking spring 602, and at the same time, the limit block 303 is inserted in the slot 6012.

[0066] Furthermore, in this embodiment, in order to prevent the sleeve 601 from detaching from the rotating shaft 502 when the leveling roller 3 is not installed, a stopper 5022 is fixedly installed at one end of the rotating shaft 502 away from the mounting plate 501 by bolts to prevent the sleeve 601 from detaching from the rotating shaft 502.

[0067] Among them, in this embodiment, in order to ensure that the first synchronous belt 406 can always maintain a tensioned state during the rotation of the mounting plate 501, and prevent the first synchronous belt 406 from detaching from the first synchronous wheel 402 and the second synchronous wheel 403, the traction tensioning mechanism 8 includes a mounting seat 801, a mounting block 802, an L-shaped plate 803, a tensioning synchronous wheel 804, a mounting cylinder 805 and a connecting rod 806. The mounting seat 801 is fixedly mounted on one side of the vertical plate 101, and the mounting block 802 is fixedly mounted on the top of the mounting seat 801. A mounting hole is opened on one side of the mounting block 802, and the mounting cylinder 805 can be detachably sleeved in the mounting hole. Among them, in order to facilitate the installation of the mounting cylinder 805, a plurality of locking holes 8051 are equidistantly opened on the top of the mounting cylinder 805, and a handle screw 810 is threadedly installed on the top of the mounting block 802, and the lower end of the handle screw 810 can be inserted into the locking hole In 8051, a slider 807 is slidably provided inside the mounting cylinder 805, one side of the slider 807 is fixedly connected to one end of the connecting rod 806, and the other end of the connecting rod 806 slides through the mounting cylinder 805 and is fixedly connected to one side of the L-shaped plate 803, the tensioning synchronous wheel 804 is rotatably connected to the inner side of the L-shaped plate 803, the tensioning synchronous wheel 804 is transmission-connected to the first synchronous belt 406, a tensioning spring 808 is sleeved on the connecting rod 806, one end of the tensioning spring 808 abuts against one side of the slider 807, and the other end of the tensioning spring 808 abuts against the inner wall of one end of the mounting cylinder 805, in order to ensure that the tensioning synchronous wheel 804 can move smoothly along the axial direction of the mounting cylinder 805, a guide rod 809 is fixedly connected to one side of the L-shaped plate 803, and a guide hole is opened on one side of the mounting block 802, and one end of the guide rod 809 is slidably inserted into the guide hole.

[0068] By adopting the above technical solution, when the distance between the first synchronous wheel 402 and the second synchronous wheel 403 becomes smaller due to the rotation of the mounting plate 501, the tensioning synchronous wheel 804 moves in the direction away from the first synchronous wheel 402 under the elastic force of the tensioning spring 808. When the mounting plate 501 rotates so that the distance between the first synchronous wheel 402 and the second synchronous wheel 403 increases, the tensioning synchronous wheel 804 moves in the direction close to the first synchronous wheel 402 under the tension of the first synchronous belt 406.

[0069] It is worth noting that the controller 7 can use the S7-200 ultra-miniaturized PLC controller, and the thickness detection sensor 202 can use the thickness detection sensor of model ZTMS08, which is mainly used to measure the thickness of thin film sheets and can meet the use requirements of this embodiment.

[0070] In this embodiment, an alarm light 701 and a speaker 702 are fixedly installed on the top of the controller 7. When the thickness detection sensor 202 located at the outlet of the frame detects that the thickness of the film is still abnormal, the controller 7 controls the alarm light 701 to emit a warning light and controls the speaker 702 to emit an alarm sound.

[0071] Working principle: When in use, the film flowing out of the blow molding machine is passed through between the first thread roller 301 and the second thread roller 302 and then wound onto the winding roller for winding. When the thickness detection sensor 202 at the machine feed port detects that the film thickness is abnormal, the controller 7 controls the piston rod of the electric push rod 503 to extend, thereby causing the first thread roller 301 to move upward and press on the lower surface of the film, and at the same time causing the second thread roller 302 to move downward and press on the upper surface of the film, thereby causing the wrinkled part in the middle of the film to be pulled and unfolded, and at the same time controlling the rotation shaft of the motor 401 to rotate, thereby driving the first thread roller 301 and the second thread roller 302 to rotate, and the threads at both ends of the first thread roller 301 and The threads at both ends of the second threaded roller 302 flatten the wrinkles on the bottom edge of the film and the wrinkles on the top edge of the film to both sides of the film, and then the processed film continues to move toward the direction of the receiving roller under the traction of the receiving roller. When it moves to the discharge port of the frame, the thickness detection sensor 202 at the discharge port of the frame re-inspects the film after thickness abnormality treatment. If the thickness is still abnormal, it is considered that the abnormal film thickness is not caused by wrinkles, and the abnormal film casting of the blow molding machine may cause the abnormal film thickness. At this time, the controller 7 controls the alarm light 701 to emit a warning light, and at the same time controls the speaker 702 to emit an alarm sound to alert the staff and remind the staff to deal with it in time.

[0072] Parts not involved in the present invention are the same as the prior art or can be implemented by the prior art. Although the embodiments of the present invention have been shown and described, it is understood by those skilled in the art that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A film wall thickness detection device, characterized in that: include: A frame, wherein the frame is arranged between the film blowing machine and the film receiving roller; A film thickness detection mechanism (2), the film thickness detection mechanism (2) being arranged on the frame, and the film thickness detection mechanism (2) being used for real-time measurement of the film thickness; a flattening roller (3), the flattening roller (3) being rotatably mounted on the frame, the flattening roller (3) comprising a first threaded roller (301) and a second threaded roller (302), the first threaded roller (301) being used to flatten wrinkles on the lower surface of the film, and the second threaded roller (302) being used to flatten wrinkles on the upper surface of the film; a first driving mechanism (4), the first driving mechanism (4) being arranged on one side of the frame, the first driving mechanism (4) being used to drive the first threaded roller (301) and the second threaded roller (302) to rotate; a second driving mechanism (5), the second driving mechanism (5) being arranged on the other side of the frame, the second driving mechanism (5) being used to drive the first threaded roller (301) to move upwards and press against the lower surface of the film, and at the same time drive the second threaded roller (302) to move downwards and press against the upper surface of the film; A controller (7), the controller (7) being fixedly mounted on the frame, the film thickness detection mechanism (2) transmitting a detected film thickness signal to the controller (7), and the first drive mechanism (4) and the second drive mechanism (5) being both controlled by the controller (7); The frame comprises a base (1) and a vertical plate (101), two vertical plates (101) are provided, and the two vertical plates (101) are symmetrically fixedly mounted on the top of the base (1); Two film thickness detection mechanisms (2) are provided, and the two film thickness detection mechanisms (2) are respectively provided at the feed port and the discharge port of the frame, and the two film thickness detection mechanisms (2) each comprise a detection plate (201), the detection plate (201) being fixedly mounted between the two vertical plates (101), and a plurality of thickness detection sensors (202) for detecting the film thickness are fixedly mounted at equal intervals on the bottom of the detection plate (201); The second driving mechanism (5) comprises two mounting plates (501) and an electric push rod (503), wherein one of the mounting plates (501) is rotatably mounted on one side of one of the vertical plates (101), and the other mounting plate (501) is rotatably mounted on one side of the other vertical plate (101), and both ends of the mounting plates (501) are rotatably mounted with a rotating shaft (502) via a bearing, and two arc-shaped slide grooves (102) are provided on the vertical plate (101), and the two rotating shafts (502) are respectively slidably arranged in the two arc-shaped slide grooves (102), and both ends of the rotating shaft (502) are provided with a disassembly mechanism (6), the first threaded roller (301) is fixedly mounted between one group of two opposite disassembly mechanisms (6), and the second threaded roller (302) is fixedly mounted between another group of two opposite disassembly mechanisms (6), and an upper hinge seat (507) is fixedly connected to the bottom of one end of one of the mounting plates (501), A lower hinged seat (505) is fixedly connected to one side of the vertical plate (101), a lower rotating block (504) is rotatably connected to the lower hinged seat (505), an upper rotating block (506) is rotatably connected to the upper hinged seat (507), the bottom of the electric push rod (503) is fixedly connected to the top of the lower rotating block (504), the piston rod end of the electric push rod (503) is fixedly connected to the bottom of the upper rotating block (506), and by controlling the extension of the piston rod of the electric push rod (503), the end of the mounting plate (501) close to the first threaded roller (301) is moved upward, driving the first threaded roller (301) to move upward and press on the lower surface of the film, and at the same time, the end of the mounting plate (501) away from the first threaded roller (301) is moved downward, so that the second threaded roller (302) is pressed on the upper surface of the film, and the thread rotation directions of the two ends of the first threaded roller (301) and the two ends of the second threaded roller (302) are opposite. The first driving mechanism (4) comprises a motor (401), a first synchronous wheel (402), a second synchronous wheel (403), a third synchronous wheel (404) and a fourth synchronous wheel (405); the motor (401) is fixedly mounted on the top of the base (1); the first synchronous wheel (402) is fixedly connected to the rotating shaft of the motor (401); the second synchronous wheel (403) and the third synchronous wheel (404) are both fixedly sleeved on the rotating shaft (502) at one end of the first threaded roller (301). The fourth synchronous wheel (405) is fixedly sleeved on the rotating shaft (502) at one end of the second threaded roller (302), the first synchronous wheel (402) and the second synchronous wheel (403) are connected to each other through a first synchronous belt (406), the third synchronous wheel (404) and the fourth synchronous wheel (405) are connected to each other through a second synchronous belt (407), and a traction tensioning mechanism (8) for maintaining the tension of the first synchronous belt (406) is provided on one side of the vertical plate (101); The thickness detection sensor (202) is electrically connected to a signal input terminal of the controller (7), and the motor (401) and the electric push rod (503) are both controlled by the controller (7); The disassembly and assembly mechanism (6) comprises a sleeve (601), one end of the sleeve (601) is open, the end of the sleeve (601) away from the opening is slidably sleeved on the end of the rotating shaft (502) away from the mounting plate (501), the end of the sleeve (601) away from the mounting plate (501) is formed with a flange (6011), an annular block (5023) is fixedly connected to the rotating shaft (502), the outer wall of the annular block (5023) is in sliding contact with the inner wall of the arc-shaped sliding groove (102), and the sleeve ( The outer wall of the sleeve (601) is provided with a locking spring (602), one end of the locking spring (602) is against the bottom of the flange (6011), and the other end of the locking spring (602) is against the top of the annular block (5023); a slot (6012) is provided on the inner wall of the opening of the sleeve (601), the end of the leveling roller (3) is fixedly connected to the limit block (303), and after the open end of the sleeve (601) is sleeved on the end of the leveling roller (3), the limit block (303) is inserted into the slot (6012); A flat groove (5021) is formed at one end of the rotating shaft (502) away from the mounting plate (501), a flat cutout (6013) is formed at one end of the sleeve (601) away from the flange (6011), the flat cutout (6013) is slidably engaged with the flat groove (5021), and a stopper (5022) is fixedly mounted on one end of the rotating shaft (502) away from the mounting plate (501) by means of bolts to prevent the sleeve (601) from being separated from the rotating shaft (502); The traction tensioning mechanism (8) comprises a mounting seat (801), a mounting block (802), an L-shaped plate (803), a tensioning synchronous wheel (804), a mounting cylinder (805) and a connecting rod (806); the mounting seat (801) is fixedly mounted on one side of the vertical plate (101); the mounting block (802) is fixedly mounted on the top of the mounting seat (801); a mounting hole is provided on one side of the mounting block (802); the mounting cylinder (805) is detachably mounted in the mounting hole; a slider (807) is slidably arranged inside the mounting cylinder (805); one side of the slider (807) is in contact with the vertical plate (101); One end of the connecting rod (806) is fixedly connected, and the other end of the connecting rod (806) slides through the installation tube (805) and is fixedly connected to one side of the L-shaped plate (803), the tensioning synchronous wheel (804) is rotatably connected to the inner side of the L-shaped plate (803), the tensioning synchronous wheel (804) is transmission-connected to the first synchronous belt (406), and a tensioning spring (808) is sleeved on the connecting rod (806), one end of the tensioning spring (808) abuts against one side of the slider (807), and the other end of the tensioning spring (808) abuts against the inner wall of one end of the installation tube (805); A guide rod (809) is fixedly connected to one side of the L-shaped plate (803), a guide hole is provided on one side of the mounting block (802), one end of the guide rod (809) is slidably inserted into the guide hole, a plurality of locking holes (8051) are equidistantly provided on the top of the mounting tube (805), a handle screw (810) is threadedly mounted on the top of the mounting block (802), and the lower end of the handle screw (810) can be inserted into the locking hole (8051).

2. A film wall thickness detection device according to claim 1, characterized in that: An alarm light (701) and a loudspeaker (702) are fixedly mounted on the top of the controller (7); when the thickness detection sensor (202) located at the material outlet of the rack detects that the thickness of the film is still abnormal, the controller (7) controls the alarm light (701) to emit a warning light and controls the loudspeaker (702) to emit an alarm sound.

3. A film wall thickness detection device according to claim 1, characterized in that: Rollers (104) and height-adjustable feet (103) are installed at the four corners of the bottom of the base (1).

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