A plastic film surface flatness detection device

Abstract

The present invention discloses a device for detecting the surface flatness of a plastic film, comprising: a mounting plate, connecting plates are fixedly mounted at both ends of the mounting plate, mounting rods and winding mechanisms are respectively rotatably mounted on two groups of connecting plates in a damping manner, a first side baffle is threadedly mounted on one end of the mounting rod, the outer surface of the mounting rod can be fitted with a plastic film cylinder, the head end of the plastic film wound on the plastic film cylinder can be stretched and extended and clamped in the winding mechanism, an L-shaped plate is fixedly mounted on the rear side of the mounting plate, two groups of supporting mechanisms are fixedly mounted on the lower surface of the top of the L-shaped plate, the supporting mechanism can apply supporting force to the plastic film between the mounting rod and the winding mechanism, and a marking mechanism is rotatably mounted on the mounting plate. The present application uses the design of the marking mechanism to mark and divide the uneven stages of the plastic film surface, so that the staff can intuitively find the uneven sections of the plastic film and detect them, which is convenient for collecting bad data for process optimization and improvement.

Description

Technical Field

[0001] The invention relates to the technical field of plastic film processing detection, in particular to a plastic film surface flatness detection device. Background Art

[0002] Plastic film is made of polyvinyl chloride, polyethylene, polypropylene, polystyrene and other resins, used for packaging and as a coating layer. Plastic film is widely used in food packaging, medicine, chemical industry and other fields due to its good transparency, convenience and low price. Among them, food packaging accounts for the largest proportion, such as beverage packaging, frozen food packaging, steamed food packaging, fast food packaging, etc. These products have brought great convenience to people's lives. Today's applications have certain requirements for the flatness of plastic film, so before the plastic film leaves the factory, the surface flatness of the plastic film will be tested.

[0003] For example, the patent with the national authorized patent announcement number CN116147544B discloses a plastic film surface flatness detection device, including a detection device, one side of the detection device is provided with an adjustment device, a fixing device and a placement device in sequence, and a convergence device is provided on the side of the detection device away from the adjustment device. The present invention collects and compares the plastic film image between the adjustment device and the fixing device through a high-definition camera device 2, and then uses a roller 1 at the top of two rolling blocks to facilitate friction with the bottom of the plastic film, thereby pulling the plastic film to both sides under the action of friction; at the same time, the mutual cooperation of the electric slider 1 and the electric slider 2 at the bottom can change the angle and position of the roller 1 to adapt to each overlapping area; at the same time, the clamping device at the top of the slide rail 4 will assist the adjustment device to adjust the plastic film, thereby solving the problem of misidentification caused by overlapping plastic films in the prior art in flatness detection, thereby affecting the detection accuracy.

[0004] However, the above-mentioned plastic film surface flatness detection device cannot mark the uneven surface of the plastic film when detecting the flatness of the plastic film surface, which will cause the production personnel to be unable to know the specific location of the unevenness on the plastic film, making it difficult to repair and adjust the production equipment parameters of the plastic film to improve it. Summary of the invention

[0005] The object of the present invention is to provide a plastic film surface flatness detection device to solve the problem that the existing plastic film surface flatness detection device proposed in the above background technology cannot mark the uneven surface of the plastic film when detecting the flatness of the plastic film surface, which will cause the production personnel to be unable to know the specific location of the unevenness on the plastic film, making it difficult to repair and adjust the production equipment parameters of the plastic film to improve it.

[0006] To achieve the above object, the present invention provides the following technical solutions:

[0007] A plastic film surface flatness detection device comprises: a mounting plate, connecting plates are fixedly mounted at both ends of the mounting plate, mounting rods and winding mechanisms are respectively mounted on two groups of connecting plates in a damping rotation manner, a first side baffle is threadedly mounted on one end of the mounting rod, a plastic film cylinder can be sleeved on the outer surface of the mounting rod, and the head end of the plastic film wound on the plastic film cylinder can be stretched and extended and clamped in the winding mechanism, wherein:

[0008] An L-shaped plate is fixedly installed on the rear side of the mounting plate, and two sets of supporting mechanisms are fixedly installed on the lower surface of the top of the L-shaped plate. The supporting mechanisms can apply supporting force to the plastic film between the mounting rod and the winding mechanism, so that the plastic film can be pushed downward to form a trapezoidal shape, and the plastic film can be horizontal between the two sets of supporting mechanisms;

[0009] A marking mechanism is rotatably mounted on the mounting plate, and the marking mechanism can be driven to flip over to touch the upper surface of the plastic film that is supported by the supporting mechanism to be horizontal and draw lines.

[0010] The above-mentioned plastic film surface flatness detection device, wherein: a laser detection sensor is fixedly installed on the lower surface of the mounting plate, and the laser detection sensor is located between two sets of top support mechanisms. When the laser detection sensor detects a defect, the marking mechanism can synchronously flip and draw a line to mark the defect area on the surface of the plastic film.

[0011] The above-mentioned plastic film surface flatness detection device, wherein: the signal transmitting end of the laser detection sensor is connected to the signal receiving end of the controller, and the control output end of the controller is electrically connected to the electrical control end of the marking mechanism.

[0012] The above-mentioned plastic film surface flatness detection device, wherein: the winding mechanism includes a motor electrically connected to the controller, the motor is fixedly mounted on one side of the connecting plate, the output shaft of the motor passes through the connecting plate and is fixedly mounted with a winding drum, an arc-shaped clamping plate is rotatably mounted on the outer surface of the winding drum, and the arc-shaped clamping plate can clamp the head end of the plastic film between the winding drum and the arc-shaped clamping plate;

[0013] Among them, the surface of the winding drum is provided with an arc-shaped groove, and a convex tooth is fixedly installed on the side surface of the arc-shaped clamping plate facing the arc-shaped groove. The convex tooth can be flipped along with the arc-shaped clamping plate to fit into the arc-shaped groove on the surface of the winding drum.

[0014] The above-mentioned plastic film surface flatness detection device, wherein: the arc-shaped clamping plate and one end of the winding drum are provided with an insertion interface, a pin can be inserted into the insertion interface in a damping manner, a second side baffle is fixedly installed on the outer surface of the pin, and the arc-shaped clamping plate can be fixedly closed in the arc-shaped groove on the surface of the winding drum through the insertion of the pin.

[0015] The above-mentioned plastic film surface flatness detection device, wherein: the supporting mechanism includes a top plate, the top plate is fixedly mounted on the lower surface of the top of the L-shaped plate, the lower surface of the top plate is rotatably mounted with a first electric push rod and a supporting plate, one end of the piston rod of the first electric push rod is rotatably mounted in the first docking plate, the first docking plate is fixedly mounted on one end of the supporting plate, and the other end of the supporting plate is rotatably mounted with a supporting column;

[0016] The supporting plate and supporting column can be pushed by the first electric push rod to flip to a vertical state, so that the two groups of supporting columns can touch the upper surface of the plastic film, so that the plastic film between the two groups of supporting columns can be supported to a horizontal state.

[0017] The above-mentioned plastic film surface flatness detection device, wherein: the marking mechanism includes a second electric push rod, the second electric push rod is rotatably installed in the second docking plate, the second docking plate is fixedly installed on the lower surface of the mounting plate, one end of the piston rod of the second electric push rod is rotatably installed with a Y-shaped rod, the upper surface of the Y-shaped rod is fixedly installed with a rotating disk, the rotating disk is rotatably installed in the third docking plate, the third docking plate is fixedly installed on one side of the mounting plate, and one end of the Y-shaped rod is disassembled and inserted with a marking pen.

[0018] The above-mentioned plastic film surface flatness detection device, wherein: a butterfly bolt is threadedly installed on the outer surface of the Y-shaped rod, and the threaded part of the butterfly bolt can be threaded and pressed on the outer surface of the marker pen.

[0019] The above-mentioned plastic film surface flatness detection device, wherein: the second electric push rod can push the Y-shaped rod to flip through the rotating disk, so that the Y-shaped rod can be driven to flip to a vertical state, and the vertical Y-shaped rod can drive the marker pen to contact the horizontal plastic film surface.

[0020] The above-mentioned plastic film surface flatness detection device, wherein: the second electric push rod and the laser detection sensor are both controlled by a controller.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] 1. Through the design of the mounting plate, the connecting plate, the winding mechanism, the supporting mechanism, the marking mechanism and the laser detection sensor, when detecting the surface flatness of the plastic film, the plastic film tube can be inserted and sleeved on the outer surface of the mounting rod, and then the first side baffle plate can be threadedly installed into the mounting rod to fix the plastic film tube inside, and then the staff can pull the head end of the plastic film to make the plastic film pass through the lower end of the supporting mechanism and be clamped inside by the winding mechanism, and then the two groups of supporting mechanisms can be started to flip open to the lower end synchronously, so that the two groups of supporting mechanisms can be synchronously pressed against the surface of the plastic film below, and the plastic film can be supported into a trapezoidal shape, so that the plastic film between the two groups of supporting mechanisms can be clamped inside. The plastic film between the structures is in a horizontal state for the laser detection sensor to detect its flatness, and the segments supported by the supporting mechanism to be horizontal can avoid wrinkles in the plastic film during the detection process. Then the reeling mechanism can be started to pull and rotate the plastic film tube mounted on the outer surface of the mounting rod, so that the plastic film on the outer surface of the plastic film tube can be continuously stretched and reeled to the outer surface of the reeling mechanism, and at the same time, the flatness of the surface of the plastic film is continuously detected by the laser detection sensor. The laser detection sensor will continuously emit a beam of laser to the surface of the plastic film through the laser diode, forming a light spot on the surface of the plastic film, and the reflected light of the light spot will enter the laser again In the detection sensor, if the surface of the plastic film is uneven, the angle of the reflected light will change. There is a position sensitive detector (PSD) or charge coupled device (CCD) inside the laser detection sensor, which can detect the position change of the reflected light. According to the position change of the reflected light, the detection data is transmitted to the controller, and the controller can make a judgment based on the set flatness threshold. If the threshold of the surface flatness of the plastic film exceeds the set value, the controller will control the marking mechanism through the electronic control end, so that the marking mechanism can be pushed to flip to a vertical state flush with the surface, and the marking end of the marking mechanism can contact the surface of the plastic film to draw lines. After the uneven areas are divided and the threshold of the flatness of the plastic film is within the set value, the controller will control the marking mechanism to pull back and flip, so that the marking end is out of contact with the plastic film. After the roll of plastic film is completely inspected, it can be removed from the outer surface of the winding mechanism and unfolded. The markings of the marking mechanism can allow the staff to intuitively find the uneven sections of the plastic film and deal with them, making it convenient for the staff to collect data for process optimization and improvement. In addition, through marking and division, it is easier to understand the bottlenecks and problems in the production process, make targeted improvements, continuously optimize the production process, and improve production efficiency and product quality.

[0023] 2. Through the design of the arc-shaped clamping plate, the winding drum, the convex teeth and the pins, during the flatness inspection of the plastic film, the arc-shaped clamping plate can be turned over from the outer surface of the winding drum, and then the head end of the plastic film can be placed into the arc-shaped groove on the winding drum and the arc-shaped clamping plate cover can be fitted into the arc-shaped groove. The convex teeth on the surface of the arc-shaped clamping plate can also touch the surface of the plastic film, so that the plastic film can be clamped between the winding drum and the arc-shaped clamping plate. Then, the pin at one end of the second side baffle can be inserted into the plug-in interface opened on one side of the winding drum and the arc-shaped clamping plate, so that the arc-shaped clamping plate can be locked in the arc-shaped groove of the winding drum to be spliced ​​into a cylindrical shape. In addition, in the process of clamping the plastic film, the staff does not need to use any tools, so that the staff can operate faster, save time, clamp the plastic film faster, and complete the work faster.

[0024] Then, during the inspection process, the motor can be started to drive the winding drum and the arc clamp to rotate, so as to pull and reel the surface of the plastic film drum, and at the same time, the laser detection sensor can continuously detect its flatness.

[0025] 3. Through the design of the first electric push rod, the first docking plate, the top support plate and the top support column, the first electric push rod can be started after the head end of the plastic film is clamped in the winding drum, so that the first electric push rod pushes the first docking plate at one end of the top support plate through the piston rod, and the top support plate can drive the top support column at the lower end to rotate vertically, and the two groups of top support columns can support the plastic film between the mounting rod and the winding drum into a trapezoidal shape, so that the plastic film between the top support columns is in a horizontal state, and the support of the two groups of top support columns can avoid wrinkles in the process of winding the plastic film, and the height of the plastic film supported into a horizontal state can be touched by the flipping of the marking mechanism;

[0026] When not in use, the first electric push rod can retract the top support plate and the top support column to increase the distance between the L-shaped plate and the mounting plate, providing workers with a larger operating space when connecting the plastic film, thereby improving the workers' flexibility in the process of connecting the plastic film. When there is enough space to connect the plastic film, the workers can better observe and adjust the connection position, reducing the probability of misoperation and connection errors.

[0027] 4. Through the design of butterfly bolts, the second electric push rod, the Y-shaped rod and the marker pen, the laser detection sensor will continuously detect the flatness of the plastic film surface during the process of the motor driving the reel to reel up the plastic film; the laser detection sensor will emit a laser beam through the laser diode, and this laser beam will be vertically shot at the surface of the plastic film. When the laser beam hits the surface of the plastic film, it will be reflected back, and the reflected laser beam will return to the receiver inside the laser detection sensor. The photoelectric receiver in the laser detection sensor will receive the reflected laser, and according to the reflection angle and optical path change of the laser beam, it can detect the position of the laser reflection point. By analyzing the position and change of the reflected light, the sensor can calculate the distance from the sensor to the surface of the plastic film, which is the so-called displacement, and the laser detection sensor sends the measured distance data to the controller, which can receive this data in real time. The controller will process and analyze the received displacement data. It can calculate the height change and flatness of the plastic film surface by comparing multiple measurement data. The controller can judge the flatness of the plastic film based on the processed data. If the surface height variation exceeds the preset tolerance range, the controller will determine that the plastic film is uneven. Then the controller will start the second electric push rod through the electric control end to push the Y-shaped rod to rotate in the third docking plate through the rotating disk until the Y-shaped rod is pushed and rotated to a vertical state and then stop. The Y-shaped rod rotated to a vertical state will drive the laser pen on the top to rotate to a vertical state, and at the same time make the pen tip contact the surface of the plastic film between the top support pillars, so that the marker pen can be used when unevenness occurs. Lines are drawn on the flat surface of the plastic film until the threshold of the flatness of the plastic film is within the set value. The controller will then control the second electric push rod to pull the Y-shaped rod, so that the Y-shaped rod drives the marker to flip and tilt, that is, to detach from the surface of the plastic film. After a roll of plastic film is completely inspected, it can be removed from the outer surface of the winding drum and unfolded. The segments marked by the marker are uneven segments, which can allow the staff to intuitively find the uneven segments of the plastic film and inspect them, so that they can collect data for process optimization and improvement;

[0028] When replacing the marker pen, the staff can rotate the butterfly bolt to release the threaded part from the pressure on the marker pen, and then pull it out to replace the new marker pen, and tighten the butterfly bolt to fix the marker pen in the Y-shaped rod, thus completing the purpose of replacing the marker pen, and the replacement process is convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a schematic structural diagram of a device for detecting the surface flatness of a plastic film according to the present invention;

[0030] Figure 2 It is a schematic diagram of the L-shaped plate structure of the present invention;

[0031] Figure 3 It is a schematic diagram of the structure of the first side baffle and the second side baffle of the present invention;

[0032] Figure 4 It is a schematic diagram of the overall structure of the device for detecting the surface flatness of a plastic film according to the present invention;

[0033] Figure 5 It is a structural schematic diagram of the winding mechanism of the present invention;

[0034] Figure 6 It is a schematic diagram of the structure of the top support mechanism of the present invention;

[0035] Figure 7 It is a schematic diagram of the structure of the marking mechanism of the present invention being flipped to a vertical state;

[0036] Figure 8 It is a schematic structural diagram of a marking pen and a butterfly bolt of the present invention.

[0037] In the figure: 1. Mounting plate; 101. Connecting plate; 102. Mounting rod; 103. First side baffle; 104. L-shaped plate; 2. Second docking plate; 201. Third docking plate; 3. Winding mechanism; 301. Plug interface; 302. Winding drum; 303. Arc-shaped clamping plate; 304. Protruding teeth; 305. Motor; 306. Second side baffle; 307. Pin; 4. Support mechanism; 401. Top plate; 402. First electric push rod; 403. First docking plate; 404. Support plate; 405. Support column; 5. Marking mechanism; 501. Butterfly bolt; 502. Second electric push rod; 503. Rotating disk; 504. Y-shaped rod; 505. Marking pen; 6. Laser detection sensor. DETAILED DESCRIPTION

[0038] 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.

[0039] See also Figure 1-Figure 8 , this embodiment provides the following technical solutions:

[0040] like Figure 1-Figure 3As shown, a plastic film surface flatness detection device comprises: a mounting plate 1, connecting plates 101 are fixedly mounted at both ends of the mounting plate 1, mounting rods 102 and winding mechanisms 3 are respectively mounted on two sets of connecting plates 101 in a damping rotation manner, a first side baffle 103 is threadedly mounted on one end of the mounting rod 102, the outer surface of the mounting rod 102 can be fitted with a plastic film cylinder, and the head end of the plastic film wound on the plastic film cylinder can be stretched and extended and clamped in the winding mechanism 3;

[0041] An L-shaped plate 104 is fixedly installed on the rear side of the mounting plate 1, and two sets of supporting mechanisms 4 are fixedly installed on the lower surface of the top of the L-shaped plate 104. The supporting mechanisms 4 can apply a supporting force to the plastic film between the mounting rod 102 and the winding mechanism 3, so that the plastic film can be pushed downward to form a trapezoidal shape, and the plastic film can be horizontal between the two sets of supporting mechanisms 4;

[0042] Among them, a marking mechanism 5 is rotatably installed on the mounting plate 1, and the marking mechanism 5 can be driven to flip to touch the upper surface of the plastic film supported by the supporting mechanism 4 to be horizontal and draw a line.

[0043] A laser detection sensor 6 is fixedly mounted on the lower surface of the mounting plate 1 and is located between the two sets of top support mechanisms 4. When the laser detection sensor 6 detects defects or unevenness, the marking mechanism 5 can synchronously flip and draw lines on the surface of the plastic film to mark the defect or unevenness area.

[0044] The signal transmitting end of the laser detection sensor 6 is connected to the signal receiving end of the controller, and the control output end of the controller is electrically connected to the electric control end of the marking mechanism 5;

[0045] The laser detection sensor 6 may be a laser scanning sensor of model LT-9011M or LT-9501H, and the controller may be a controller of model LK-G3001V.

[0046] Through the design of the mounting plate 1, the connecting plate 101, the winding mechanism 3, the supporting mechanism 4, the marking mechanism 5 and the laser detection sensor 6, when detecting the surface flatness of the plastic film, the plastic film tube can be inserted into the outer surface of the mounting rod 102, and then the first side baffle 103 can be threadedly installed into the mounting rod 102 to confine the plastic film tube inside. Then the staff can pull the head end of the plastic film to be pulled through the lower end of the supporting mechanism 4 and clamped inside by the winding mechanism 3, and then the two groups of supporting mechanisms 4 can be started to flip downward synchronously, so that the two groups of supporting mechanisms 4 can be synchronously touched on the surface of the plastic film below, and the plastic film can be supported into a trapezoid. , so that the plastic film between the two groups of supporting mechanisms 4 is horizontal for the laser detection sensor 6 to detect its flatness, and the segment supported by the supporting mechanism 4 to be horizontal can avoid wrinkles in the process of detection of the plastic film, and then the winding mechanism 3 can be started to pull and rotate the plastic film tube mounted on the outer surface of the mounting rod 102, so that the plastic film on the outer surface of the plastic film tube can be continuously stretched and rolled to the outer surface of the winding mechanism 3, and at the same time, the laser detection sensor 6 continuously detects the flatness of the surface of the plastic film. The laser detection sensor 6 will continuously emit a beam of laser to the surface of the plastic film through the laser diode, forming a light spot on the surface of the plastic film. The reflected light will enter the laser detection sensor 6 again. If the surface of the plastic film is uneven, the angle of the reflected light will change. There is a position sensitive detector (PSD) or charge coupled device (CCD) inside the laser detection sensor 6, which can detect the position change of the reflected light. According to the position change of the reflected light, the height data is transmitted to the controller, and the controller can make a judgment based on the set flatness threshold. If the threshold of the flatness of the surface plastic film exceeds the set value, the controller will control the marking mechanism 5 through the electronic control end, so that the marking mechanism 5 can be pushed and flipped to a vertical state flush with the surface, so that the marking end of the marking mechanism 5 can contact the surface of the plastic film. Lines are drawn on the surface to divide the uneven or defective areas. When the threshold of the flatness of the plastic film is within the set value, the controller will control the marking mechanism 5 to pull back and flip, so that the marked end is out of contact with the plastic film. After the roll of plastic film is completely inspected, it can be removed from the outer surface of the winding mechanism 3 and unfolded. The marks of the marking mechanism 5 can be used by the staff to intuitively find the uneven sections of the plastic film and inspect them, so as to collect data for process optimization and improvement. In addition, through the marking division, it is easier to find bottlenecks and problems in the production process, make targeted improvements, continuously optimize the production process, and improve production efficiency and product quality.

[0047] like Figure 4-Figure 5As shown, the winding mechanism 3 includes a motor 305 electrically connected to the controller, the motor 305 is fixedly mounted on one side of the connecting plate 101, the output shaft of the motor 305 passes through the connecting plate 101 and is fixedly mounted with a winding drum 302, an arc-shaped clamping plate 303 is rotatably mounted on the outer surface of the winding drum 302, and the arc-shaped clamping plate 303 can clamp the head end of the plastic film between the winding drum 302 and the arc-shaped clamping plate 303;

[0048] The surface of the winding drum 302 is provided with an arc groove, and a convex tooth 304 is fixedly installed on the side of the arc clamping plate 303 facing the arc groove. The convex tooth 304 can be turned over with the arc clamping plate 303 to fit into the arc groove on the surface of the winding drum 302.

[0049] An insertion port 301 is provided at one end of the arc-shaped clamping plate 303 and the winding drum 302, and a pin 307 can be inserted into the insertion port 301 in a damping manner. A second side baffle 306 is fixedly installed on the outer surface of the pin 307, and the arc-shaped clamping plate 303 can be fixedly closed in the arc-shaped groove on the surface of the winding drum 302 by the insertion of the pin 307.

[0050] Through the design of the arc clamping plate 303, the winding drum 302, the convex teeth 304 and the pin 307, during the flatness inspection of the plastic film, the arc clamping plate 303 can be flipped away from the outer surface of the winding drum 302, and then the head end of the plastic film can be placed into the arc groove of the winding drum 302 and the arc clamping plate 303 can be covered and fit into the arc groove. The convex teeth 304 on the surface of the arc clamping plate 303 will also touch the surface of the plastic film, so that the plastic film can be clamped on the winding drum. The pin 307 at one end of the second side baffle 306 can then be inserted into the plug-in interface 301 opened on one side of the winding drum 302 and the curved clamping plate 303, so that the curved clamping plate 303 can be locked in the groove of the winding drum 302 to be spliced ​​into a cylindrical shape. In the process of clamping the plastic film, the staff does not need to use any tools, so that the staff can operate faster, save time, clamp the plastic film faster, and complete the work faster.

[0051] Then, during the detection process, the motor 305 is started to drive the winding drum 302 and the arc clamping plate 303 to rotate, so as to pull and reel the surface of the plastic film drum, and at the same time, the laser detection sensor 6 continuously detects the flatness of the plastic film.

[0052] like Figure 6As shown, the supporting mechanism 4 includes a top plate 401, which is fixedly mounted on the lower surface of the top of the L-shaped plate 104, and a first electric push rod 402 and a supporting plate 404 are rotatably mounted on the lower surface of the top plate 401, one end of the piston rod of the first electric push rod 402 is rotatably mounted in the first docking plate 403, the first docking plate 403 is fixedly mounted on one end of the supporting plate 404, and a supporting column 405 is rotatably mounted on the other end of the supporting plate 404;

[0053] Among them, the supporting plate 404 and the supporting column 405 can be pushed by the first electric push rod 402 to flip to a vertical state, so that the two groups of supporting columns 405 can touch the upper surface of the plastic film, so that the plastic film between the two groups of supporting columns 405 can be supported to a horizontal state.

[0054] Through the design of the first electric push rod 402, the first docking plate 403, the top support plate 404 and the top support column 405, the first electric push rod 402 can be started after the starting end of the plastic film is clamped in the winding drum 302, so that the first electric push rod 402 pushes the first docking plate 403 at one end of the top support plate 404 through the piston rod, and the top support plate 404 can drive the top support column 405 at the lower end to rotate vertically, and the two groups of top support columns 405 can support the plastic film between the mounting rod 102 and the winding drum 302 into a trapezoidal shape, so that the plastic film between the top support columns 405 is in a horizontal state, and the support of the two groups of top support columns 405 can prevent the plastic film from wrinkling during the winding process, and the height of the plastic film supported into a horizontal state can be touched by the flipping of the marking mechanism 5;

[0055] When not in use, the first electric push rod 402 can retract the top support plate 404 and the top support column 405 to increase the distance between the L-shaped plate 104 and the mounting plate 1, providing workers with a larger operating space when connecting the plastic film, thereby improving the workers' flexibility in the process of connecting the plastic film. When there is enough space to connect the plastic film, the workers can better observe and adjust the connection position, reducing the probability of misoperation and connection errors.

[0056] like Figure 7-Figure 8 As shown, the marking mechanism 5 includes a second electric push rod 502, which is rotatably installed in the second docking plate 2, and the second docking plate 2 is fixedly installed on the lower surface of the mounting plate 1. A Y-shaped rod 504 is rotatably installed on one end of the piston rod of the second electric push rod 502, and a rotating disk 503 is fixedly installed on the upper surface of the Y-shaped rod 504. The rotating disk 503 is rotatably installed in the third docking plate 201, and the third docking plate 201 is fixedly installed at one end of the mounting plate 1. A marking pen 505 is installed on one end of the Y-shaped rod 504 for removal and insertion.

[0057] A butterfly bolt 501 is threadedly installed on the outer surface of the Y-shaped rod 504 , and the threaded portion of the butterfly bolt 501 can be threadedly pressed on the outer surface of the marker pen 505 .

[0058] The second electric push rod 502 can push the Y-shaped rod 504 to flip through the rotating disk 503, so that the Y-shaped rod 504 can be driven to flip to a vertical state, and the vertical Y-shaped rod 504 can drive the marker 505 to contact the horizontal surface of the plastic film.

[0059] The second electric push rod 502 and the laser detection sensor 6 are both controlled by the controller.

[0060] Through the design of the butterfly bolt 501, the second electric push rod 502, the Y-shaped rod 504 and the marking pen 505, the laser detection sensor 6 will continuously detect the flatness of the surface of the plastic film when the motor 305 drives the winding drum 302 to reel up the plastic film;

[0061] The laser detection sensor 6 will emit a laser beam through the laser diode. This laser beam will be vertically directed to the surface of the plastic film. When the laser beam hits the surface of the plastic film, it will be reflected back. The reflected laser beam will return to the receiver inside the laser detection sensor 6. The photoelectric receiver in the laser detection sensor 6 will receive the reflected laser. According to the reflection angle and optical path change of the laser beam, it can detect the position of the laser reflection point. By analyzing the position and change of the reflected light, the sensor can calculate the distance from the sensor to the surface of the plastic film, which is the so-called displacement. The laser detection sensor 6 sends the measured distance data to the controller, which can receive this data in real time. The controller will process and analyze the received displacement data. It can calculate the height change and flatness of the plastic film surface by comparing multiple measurement data. According to the processed data, the controller can judge the flatness of the plastic film. If the surface height change exceeds the preset tolerance range, the controller will determine that the plastic film is uneven. The controller then activates the second electric push rod 502 through the electric control end to push the Y-shaped rod 504 to rotate in the third docking plate 201 through the rotating disk 503 until the Y-shaped rod 504 is pushed to rotate to a vertical state and then stops. The Y-shaped rod 504 rotated to a vertical state will drive the top laser pen 505 to rotate to a vertical state, and at the same time make the pen tip contact the surface of the plastic film between the top support pillars 405, so that the marker pen 505 can draw lines on the uneven surface of the plastic film until the threshold of the flatness of the plastic film is reached. When the value is within the set value, the controller will control the second electric push rod 502 to pull the Y-shaped rod 504, so that the Y-shaped rod 504 drives the marking pen 505 to flip and tilt, that is, to leave the surface of the plastic film, until a roll of plastic film is completely inspected and it can be removed from the outer surface of the winding drum 302 and unfolded, and the segment marked by the marking pen 505 is the uneven segment, which can allow the staff to intuitively find the uneven segment of the plastic film and inspect it, so that it can collect data for process optimization and improvement;

[0062] When replacing the marker pen, the staff can rotate the butterfly bolt 501 to disengage the threaded portion from the pressure on the marker pen 505, and then pull it out to replace it with a new marker pen 505, and tighten the butterfly bolt 501 to fix the marker pen in the Y-shaped rod 504, thereby completing the purpose of replacing the marker pen 505, and the replacement process is convenient.

[0063] The working steps of this scheme are summarized and sorted out according to the above technical scheme: when testing the surface flatness of the plastic film, the plastic film tube can be inserted into the outer surface of the mounting rod 102, and then the first side baffle 103 can be threadedly installed into the mounting rod 102 to fix the plastic film tube inside, and then the staff can pull the head end of the plastic film out, place the head end of the plastic film into the groove of the winding drum 302 and fit the arc-shaped clamping plate 303 into the groove, and the convex teeth 304 on the surface of the arc-shaped clamping plate 303 will also touch the surface of the plastic film, so that the plastic film can be clamped between the winding drum 302 and the arc-shaped clamping plate 303, and then the pin 307 at one end of the second side baffle 306 can be inserted into the winding drum 302 and the arc-shaped clamping plate 30 The arc clamping plate 303 can be locked in the groove of the winding drum 302 in the plug interface 301 opened on one side thereof to be spliced ​​into a cylindrical shape, and then the two groups of first electric push rods 402 can be started, so that the first electric push rods 402 push the first docking plate 403 at one end of the supporting plate 404 through the piston rod, so that the supporting plate 404 can drive the supporting column 405 at the lower end to rotate vertically, and the two groups of supporting columns 405 can support the plastic film between the mounting rod 102 and the winding drum 302 into a trapezoidal shape, so that the plastic film between the supporting columns 405 is in a horizontal state, and the supporting of the two groups of supporting columns 405 can prevent the plastic film from wrinkling during the winding process, and then the motor 305 can be started to drive the winding drum 302 and the arc clamping plate 303 to rotate, To pull and reel the surface of the plastic film tube, and at the same time, the laser detection sensor 6 continuously detects its flatness. The laser detection sensor 6 will emit a laser beam through the laser diode. This laser beam will be vertically shot to the surface of the plastic film. When the laser beam hits the surface of the plastic film, it will be reflected back. The reflected laser beam will return to the receiver inside the laser detection sensor 6. The photoelectric receiver in the laser detection sensor 6 will receive the reflected laser. According to the reflection angle and optical path change of the laser beam, it can detect the position of the laser reflection point. By analyzing the position and change of the reflected light, the sensor can calculate the distance from the sensor to the surface of the plastic film. This is the so-called displacement, and the laser detection sensor 6 will measure The distance data received is sent to the controller, which can receive this data in real time. The controller will process and analyze the received displacement data. It can calculate the height change and flatness of the plastic film surface by comparing multiple measurement data. According to the processed data, the controller can judge the flatness of the plastic film. If the surface height change exceeds the preset tolerance range, the controller will determine that the plastic film is uneven. Then the controller will start the second electric push rod 502 through the electric control end to push the Y-shaped rod 504 to rotate in the third docking plate 201 through the rotating disk 503 until the Y-shaped rod 504 is pushed to rotate to a vertical state and then stop. The Y-shaped rod 504 rotated to a vertical state will drive the laser pen 505 on the top to rotate to a vertical state.At the same time, the pen tip is in contact with the surface of the plastic film between the top support pillars 405, so that the marker pen 505 can draw lines on the uneven surface of the plastic film. When drawing lines, the marker pen 505 may form a small concave pressure on the surface of the plastic film. The detection data can be filtered and processed by using an algorithm to remove abnormal data caused by the top pressure of the marker pen 505, thereby improving the accuracy of the detection result. After a roll of plastic film is completely detected, it can be removed from the outer surface of the winding drum 302 and unfolded. The segment marked by the marker pen 505 is the uneven segment, which allows the staff to intuitively find the uneven segment of the plastic film and detect it, so that data can be collected for process optimization and improvement.

[0064] In summary: the device can mark and divide the uneven stages of the plastic film surface, allowing staff to intuitively find and inspect the uneven sections of the plastic film, facilitating the collection of defect data for process optimization and improvement, and making it easier to discover bottlenecks and problems in the production process, make targeted improvements, continuously optimize the production process, and improve production efficiency and product quality.

[0065] 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 plastic film surface flatness detection device, characterized in that: include: A mounting plate (1), wherein both ends of the mounting plate (1) are fixedly mounted with connecting plates (101), and mounting rods (102) and a winding mechanism (3) are respectively mounted on two sets of the connecting plates (101) in a damping rotation manner, and a first side baffle (103) is threadedly mounted on one end of the mounting rod (102), and the outer surface of the mounting rod (102) can be sleeved with a plastic film cylinder, and the head end of the plastic film wound on the plastic film cylinder can be stretched and extended and clamped in the winding mechanism (3), wherein: An L-shaped plate (104) is fixedly mounted on the rear side of the mounting plate (1), and two groups of supporting mechanisms (4) are fixedly mounted on the lower surface of the top of the L-shaped plate (104). The supporting mechanisms (4) are capable of applying a supporting force to the plastic film between the mounting rod (102) and the winding mechanism (3), so that the plastic film can be pushed downward to form a trapezoidal shape, and the plastic film can be in a horizontal state between the two groups of supporting mechanisms (4); A marking mechanism (5) is rotatably mounted on the mounting plate (1), and the marking mechanism (5) can be driven to flip to contact the upper surface of the plastic film that is supported in a horizontal state by the supporting mechanism (4) and draw a line; A laser detection sensor (6) is fixedly mounted on the lower surface of the mounting plate (1), and the laser detection sensor (6) is located between the two sets of supporting mechanisms (4). When the laser detection sensor (6) detects a defect, the marking mechanism (5) can be synchronously turned over to draw a line on the surface of the plastic film to mark the defect area; The signal transmitting end of the laser detection sensor (6) is connected to the signal receiving end of the controller, and the control output end of the controller is electrically connected to the electrical control end of the marking mechanism (5); The winding mechanism (3) comprises a motor (305) electrically connected to the controller, the motor (305) being fixedly mounted on one side of the connecting plate (101), the output shaft of the motor (305) passing through the connecting plate (101) and being fixedly mounted with a winding drum (302), an arc-shaped clamping plate (303) being rotatably mounted on the outer surface of the winding drum (302), the arc-shaped clamping plate (303) being capable of clamping the head end of the plastic film between the winding drum (302) and the arc-shaped clamping plate (303); The surface of the winding drum (302) is provided with an arc-shaped groove, and a convex tooth (304) is fixedly mounted on a side surface of the arc-shaped clamping plate (303) facing the arc-shaped groove, and the convex tooth (304) can be turned over along with the arc-shaped clamping plate (303) to fit into the arc-shaped groove on the surface of the winding drum (302); The arc-shaped clamping plate (303) and one end of the winding drum (302) are provided with an insertion interface (301), a pin (307) can be inserted into the insertion interface (301) in a damping manner, a second side baffle (306) is fixedly mounted on the outer surface of the pin (307), and the arc-shaped clamping plate (303) can be fixedly closed in the arc-shaped groove on the surface of the winding drum (302) by the insertion of the pin (307); The supporting mechanism (4) comprises a top plate (401), the top plate (401) being fixedly mounted on the lower surface of the top of the L-shaped plate (104), a first electric push rod (402) and a supporting plate (404) being rotatably mounted on the lower surface of the top plate (401), one end of the piston rod of the first electric push rod (402) being rotatably mounted in a first docking plate (403), the first docking plate (403) being fixedly mounted on one end of the supporting plate (404), and a supporting column (405) being rotatably mounted on the other end of the supporting plate (404); The supporting plate (404) and supporting pillars (405) can be pushed by the first electric push rod (402) to flip to a vertical state, so that the two groups of supporting pillars (405) can touch the upper surface of the plastic film, so that the plastic film between the two groups of supporting pillars (405) can be supported to a horizontal state; The marking mechanism (5) comprises a second electric push rod (502), the second electric push rod (502) being rotatably mounted in a second docking plate (2), the second docking plate (2) being fixedly mounted on the lower surface of the mounting plate (1), a Y-shaped rod (504) being rotatably mounted on one end of the piston rod of the second electric push rod (502), a rotating disk (503) being fixedly mounted on the upper surface of the Y-shaped rod (504), the rotating disk (503) being rotatably mounted in a third docking plate (201), the third docking plate (201) being fixedly mounted on a side surface of the mounting plate (1), and a marking pen (505) being removably mounted on one end of the Y-shaped rod (504); A butterfly bolt (501) is threadedly mounted on the outer surface of the Y-shaped rod (504), and the threaded portion of the butterfly bolt (501) can be threadedly pressed against the outer surface of the marker pen (505); The second electric push rod (502) can push the Y-shaped rod (504) to flip through the rotating disk (503), so that the Y-shaped rod (504) can be driven to flip to a vertical state, and the vertical Y-shaped rod (504) can drive the marking pen (505) to contact the horizontal surface of the plastic film.

2. A plastic film surface flatness detection device according to claim 1, characterized in that: The second electric push rod (502) and the laser detection sensor (6) are both controlled by a controller.

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