Laser measuring device for detecting thickness of paper

Abstract

The invention discloses a laser measuring device for detecting the thickness of paper, and the device comprises a cabinet which is internally provided with an H-shaped frame at the bottom end; the frame shell is arranged at the bottom end in the cabinet, and a sliding groove is formed in the right side of the frame shell; the servo motor is arranged on the top surface of the frame shell; the screw rod penetrates through and is rotationally mounted at the top end in the frame shell; the ring frame is mounted on the outer wall of the screw rod in a sliding manner; the vibration reduction assembly is arranged on the right side of the frame shell; the U-shaped plate is fixed on the bottom surface of the right side of the ring frame; the photosensitive plate is fixed on the left side of the inner wall of the U-shaped plate; the laser head penetrates through and is fixed on the right side of the inner wall of the U-shaped plate; the batten abuts against the surface of sampling detection paper, so that the problem that the sampling detection paper deviates on the H-shaped frame, and consequently the paper thickness measuring effect is poor through laser detection is solved.

Description

Technical Field

[0001] This invention belongs to the field of laser measurement, specifically relating to a laser measurement device for detecting the thickness of paper. Background Technology

[0002] The laser thickness measurement device for testing paper uses infrared laser to detect the thickness of sampled paper, ensuring that the product meets strict quality standards. Real-time data feedback helps operators dynamically adjust production processes (such as pressure, temperature, and coating amount), thereby effectively reducing thickness fluctuations, preventing batch defects, and reducing raw material waste. Ultimately, while ensuring stable product quality, it also optimizes the production process and controls costs.

[0003] Patent CN212082293U discloses a corrugated paper thickness measuring device, including a frame, an adsorption component, a driving component, and a CCD camera. The adsorption component is slidably mounted on the frame and can adsorb corrugated paper located on the top layer of the corrugated paper stack. The driving component is mounted on the frame and can drive the adsorption component to move up and down relative to the frame. The CCD camera is mounted on the frame and is used to collect the thickness dimensional information of the corrugated paper adsorbed by the adsorption component and transmit it to a computer for thickness calculation. This patent can measure the thickness of a single corrugated paper in a corrugated paper stack with high measurement efficiency and reliable measurement results.

[0004] During the process of detecting the thickness of the test paper, the sampled test paper shifts in the H-shaped frame, resulting in poor laser thickness measurement. At the same time, the photosensitive plate and laser head move downwards too far, leading to inaccurate detection by the photosensitive plate and laser head. Furthermore, the surface of the sampled test paper has wrinkles, which in turn leads to poor detection results from the equipment. Summary of the Invention

[0005] The purpose of this invention is to provide a laser measuring device for detecting the thickness of paper, so as to solve the problem that the sampled paper is misaligned in the H-shaped frame, resulting in poor laser measurement of paper thickness.

[0006] To achieve the above objectives, the present invention provides a laser measuring device for detecting the thickness of paper, comprising: a cabinet, wherein an H-shaped frame is provided at the bottom of the cabinet; The frame is located at the bottom of the cabinet interior, and a sliding groove is provided on the right side of the frame. A servo motor is mounted on the top surface of the frame. A screw, which is rotatably mounted inside the top of the frame housing; A ring frame, which is slidably mounted on the outer wall of the screw; Vibration damping assembly, wherein the vibration damping assembly is disposed on the right side of the frame shell; U-shaped plate, the U-shaped plate being fixed to the bottom right side of the ring frame; A photosensitive plate, which is fixed to the left side of the inner wall of the U-shaped plate; A laser head, which penetrates and is fixed to the right side of the inner wall of the U-shaped plate; A wide plate, which is fixed to the top of the inside of the U-shaped plate; Two U-shaped rods are slidably mounted on the top surface of the wide plate, passing through it. The strips are respectively fixed to the bottom surfaces of the two U-shaped rods; Springs, which are respectively disposed between the top surface of the strip and the bottom surface of the wide plate; The wide plate drives the U-shaped rod to move downwards, and the U-shaped rod drives the strip plate to move downwards. During the downward movement of the strip plate, the strip plate comes into contact with the surface of the sampling test paper. The strip plate slides upwards in the wide plate, and the spring on the strip plate is compressed. Under the action of the spring force, the strip plate presses against the surface of the test paper.

[0007] In one or more embodiments of the present invention, the bottom surface of the cabinet is provided with four support feet, the left side of the front of the cabinet is equipped with a control console, and the right side of the front of the cabinet is hinged with a cabinet door.

[0008] In one or more embodiments of the present invention, the outer wall of the screw is provided with a non-self-locking threaded groove, the inner wall of the ring frame meshes with the outer wall of the threaded groove of the screw, the outer wall of the ring frame slides in contact with the inner wall of the sliding groove of the frame, and a square opening is provided on the top surface of the ring frame.

[0009] In one or more embodiments of the present invention, the vibration damping assembly includes: a U-shaped frame, a corner bracket, a concave plate, and a rubber roller. The U-shaped frame is fixed to the right side of the frame and is located inside the square opening of the ring frame. The corner bracket is fixed to the bottom surface of the ring frame. The concave plate is fixed to the left side of the corner bracket. The rubber roller is rotatably mounted on the inner wall of the concave plate, and the outer wall of the rubber roller is in rolling contact with the right side of the U-shaped frame.

[0010] In one or more embodiments of the present invention, the frame is located on the left side of the H-shaped frame, the right side of the photosensitive plate is aligned with the left side of the laser head, and the wide plate is located above the H-shaped frame.

[0011] In one or more embodiments of the present invention, a limiting device is provided on the top surface of the wide plate, the limiting device being used to limit the downward movement distance of the ring frame; The top surface of the limiting device is provided with an anti-loosening device, which is used to straighten the surface of the sampling test paper.

[0012] In one or more embodiments of the present invention, the limiting device includes: two strip plates, the two strip plates being fixed to the top surface of the wide plate, and the two strip plates being located on the front and back sides of the ring frame, respectively; T-shaped rods, which are respectively fixed to the left and right sides of the two strip plates; Four grooved frames are fixed in pairs on the left and right sides of the H-shaped frame, and a sliding groove is opened at the front and back of each of the four grooved frames. Two concave plates are respectively fixed to the top surface of the four groove frames; The outer wall of the T-shaped rod slides in contact with the inner wall of the groove of the four groove frames; The T-shaped rod slides downward in the groove of the recessed frame, and the groove of the recessed frame limits the movement of the T-shaped rod. The four grooves of the recessed frame are used to limit the downward movement distance of each T-shaped rod.

[0013] In one or more embodiments of the present invention, a metal plate is fixed in the middle of the top surface of each of the two strip plates, and two vertical rods are fixed through and fixed to the top surface of each of the two concave plates. Two magnetic blocks are fixed to the bottom surface of the four vertical rods. The two magnetic blocks are located above the two metal plates. The strip plates drive the metal plates to move upward. The metal plates and the magnetic blocks make contact below, and power is supplied to the magnetic blocks. The magnetic blocks generate magnetic force and attract the metal plates.

[0014] In one or more embodiments of the present invention, the anti-loosening device includes: four L-shaped groove plates, the four L-shaped groove plates being fixed in pairs on both sides of the top surface of the metal plate; Two round rods are respectively inserted through and rotatably mounted on one side of four L-shaped slot plates that are close to each other; The U-shaped arc frame is fixed to the outer wall of the two round rods respectively; Circular rollers are rotatably mounted on the left and right sides of the inner walls of the two U-shaped arc frames, respectively. The U-shaped arc frame drives the circular roller to move downwards, and the circular roller contacts the surface of the sampling test paper. Under the action of extrusion force, the circular roller rolls on the surface of the sampling test paper, and the circular rod rotates in the L-shaped groove plate. The circular roller is used to flatten the surface of the test paper.

[0015] In one or more embodiments of the present invention, an arc plate is fixed to one side of each of the two U-shaped arc frames that are far apart from each other, an arc-shaped spring is fixed to the outer wall of each of the two arc plates, and a plate is fixed to one end of each of the two arc springs that is far away from the two arc plates. The top surface of the two plates is fixedly connected to the bottom surface of the wide plate. The arc plate drives the arc spring to rotate, and the arc spring is restricted by the plate, causing the arc spring to deform.

[0016] Compared with the prior art, the beneficial effects of the present invention are: (1) The present invention uses a cabinet, an H-shaped frame, a frame, a servo motor, a screw, a ring frame, a vibration damping component, a U-shaped plate, a photosensitive plate, a laser head, a wide plate, a U-shaped rod, and a strip plate in conjunction with a spring. The wide plate drives the U-shaped rod to move downward, and the U-shaped rod drives the strip plate to move downward. During the downward movement of the strip plate, the strip plate comes into contact with the surface of the sampling test paper. The strip plate slides upward in the wide plate, and the spring on the strip plate is compressed. Under the action of the spring force, the strip plate presses against the surface of the sampling test paper to prevent the sampling test paper from shifting in the H-shaped frame and causing poor laser detection of paper thickness.

[0017] (2) By setting a limiting device, the present invention enables the strip plate, T-shaped rod and groove frame to cooperate with the concave plate. The T-shaped rod slides downward in the groove of the groove frame. The groove of the groove frame limits the T-shaped rod to prevent the photosensitive plate and laser head from moving too deep downward, which would cause inaccurate detection by the photosensitive plate and laser head.

[0018] (3) By setting a limiting device, the present invention enables the metal plate and the vertical rod to cooperate with the magnetic block. The strip plate drives the metal plate to move upward, and the metal plate and the magnetic block make contact below. Power is supplied to the magnetic block, the magnetic block generates magnetic force, and the magnetic block attracts the metal plate, preventing the operator from accidentally starting the equipment and causing the strip plate to crush the operator.

[0019] (4) By setting the anti-loosening device, the L-shaped groove plate, the round rod and the U-shaped arc frame cooperate with the round roller. The U-shaped arc frame drives the round roller to move downward. The round roller contacts the surface of the sampling test paper. Under the action of the extrusion force, the round roller rolls on the surface of the sampling test paper, the round rod rotates in the L-shaped groove plate, and the round roller straightens the surface of the sampling test paper, preventing wrinkles on the surface of the sampling test paper from causing poor equipment detection effect.

[0020] (5) By setting the anti-loosening device, the arc plate and the arc-shaped spring piece cooperate with the plate. The arc plate drives the arc-shaped spring piece to rotate. The arc-shaped spring piece is restricted by the plate and deforms. This prevents the U-shaped arc frame from being difficult to reset, which would result in poor straightening of the test paper surface. Attached Figure Description

[0021] Figure 1 This is an overall view of one embodiment of the present invention; Figure 2 This is a diagram of internal components in one embodiment of the present invention; Figure 3 This is a cross-sectional view of the cabinet in one embodiment of the present invention; Figure 4 This is a cross-sectional view of the cabinet in one embodiment of the present invention; Figure 5 This is a diagram of a limiting device in one embodiment of the present invention; Figure 6 As shown in one embodiment of the present invention Figure 5 A magnified view of a section at point A in the middle; Figure 7 This is a diagram of an anti-loosening device in one embodiment of the present invention; Figure 8 This is a bottom view of the anti-loosening device in one embodiment of the present invention.

[0022] Explanation of key figure labels: 1. Cabinet; 2. H-shaped frame; 3. Frame shell; 4. Servo motor; 5. Screw; 6. Ring frame; 7. Vibration damping component; 701. U-shaped strip frame; 702. Corner frame; 703. Concave plate; 704. Rubber roller; 8. U-shaped plate; 9. Photosensitive plate; 10. Laser head; 11. Wide plate; 12. U-shaped rod; 13. Strip plate; 14. Spring; 15. Limiting device; 151. Strip plate; 152. T-shaped rod; 153. Groove frame; 154. Concave plate; 155. Metal plate; 156. Vertical rod; 157. Magnetic block; 16. Anti-loosening device; 161. L-shaped groove plate; 162. Round rod; 163. U-shaped arc frame; 164. Round roller; 165. Arc plate; 166. Arc-shaped spring; 167. Sheet plate. Detailed Implementation

[0023] The specific embodiments of the present invention will now be described in detail with reference to the accompanying drawings, but it should be understood that the scope of protection of the present invention is not limited to the specific embodiments.

[0024] like Figure 1-8 As shown, a laser measuring device for detecting the thickness of paper includes: a cabinet 1, four support feet on the bottom surface of the cabinet 1, a control console installed on the left side of the front of the cabinet 1, a cabinet door hinged to the right side of the front of the cabinet 1, and an H-shaped frame 2 installed at the bottom of the inside of the cabinet 1. The frame 3 is located at the bottom of the cabinet 1. The frame 3 has a sliding groove on its right side and is located on the left side of the H-shaped frame 2. Servo motor 4 is mounted on the top surface of the frame 3; Screw 5, screw 5 is installed through and rotatably inside the top of the frame 3; Ring frame 6 is slidably mounted on the outer wall of screw 5. The outer wall of screw 5 is provided with a non-self-locking threaded groove. The inner wall of ring frame 6 meshes with the outer wall of the threaded groove of screw 5. The outer wall of ring frame 6 slides in contact with the inner wall of the sliding groove of frame shell 3. A square opening is provided on the top surface of ring frame 6. Vibration damping component 7 is located on the right side of frame shell 3. Vibration damping component 7 includes: U-shaped strip frame 701, corner frame 702, concave plate 703 and rubber roller 704. U-shaped strip frame 701 is fixed on the right side of frame shell 3 and is located inside the square opening of ring frame 6. Corner frame 702 is fixed on the bottom surface of ring frame 6. Concave plate 703 is fixed on the left side of corner frame 702. Rubber roller 704 is rotatably installed on the inner wall of concave plate 703 and the outer wall of rubber roller 704 is in rolling contact with the right side of U-shaped strip frame 701. U-shaped plate 8, U-shaped plate 8 is fixed to the bottom right side of ring frame 6; Photosensitive plate 9 is fixed to the left side of the inner wall of U-shaped plate 8; Laser head 10 is inserted through and fixed to the right side of the inner wall of U-shaped plate 8, and the right side of photosensitive plate 9 is aligned with the left side of laser head 10. Wide plate 11 is fixed inside the top of U-shaped plate 8 and is located above H-shaped frame 2; Two U-shaped rods 12 are inserted through and slidably mounted on the top surface of the wide plate 11; Strip 13 is fixed to the bottom surface of the two U-shaped rods 12 respectively; Spring 14 is respectively disposed between the top surface of strip 13 and the bottom surface of wide plate 11; The strip 13 presses against the surface of the detection paper by the elastic force of the spring 14; When using this device, the operator opens the cabinet door on cabinet 1, places the sampled test paper on top of the H-shaped frame 2, closes the cabinet door, and starts the servo motor 4 via the control console. The shaft of the servo motor 4 begins to rotate in both directions, driving the screw 5 to rotate in both directions. Constrained by the sliding groove of the frame 3, the ring frame 6 moves up and down in the threaded groove of the screw 5. The ring frame 6 slides up and down in the sliding groove of the frame 3, driving the reduction... The vibrating assembly 7 moves up and down reciprocally, the ring frame 6 moves up and down reciprocally on the U-shaped frame 701, the ring frame 6 drives the corner frame 702 to move up and down reciprocally, the corner frame 702 drives the concave plate 703 to move up and down reciprocally, the concave plate 703 drives the rubber roller 704 to move up and down reciprocally, the rubber roller 704 rolls on the surface of the U-shaped frame 701, and the friction reduces the vibration of the ring frame 6 during movement. During the downward movement of the ring frame 6, the ring frame 6 drives the U-shaped plate 8 to move downward, and the U-shaped plate 8 drives the photosensitive plate 9. Moving downwards, the U-shaped plate 8 drives the laser head 10 downwards. The photosensitive plate 9 and the laser head 10 move above the sampling test paper. The operator starts the laser head 10 through the control panel. The laser head 10 emits infrared laser. The photosensitive plate 9 receives the infrared laser emitted by the laser head 10, indicating that the thickness of the sampling test paper meets the requirements. When the infrared laser received by the photosensitive plate 9 is blocked by the sampling test paper, it indicates that the thickness of the sampling test paper does not meet the requirements. At the same time, the U-shaped plate 8 drives the wide plate 11 downwards, the wide plate 11 drives the U-shaped rod 12 downwards, and the U-shaped rod 12 drives the strip 13 downwards. During the downward movement, the strip 13 contacts the surface of the sampling test paper. The strip 13 slides upwards in the wide plate 11. The spring 14 on the strip 13 is compressed. Under the elastic force of the spring 14, the strip 13 presses against the surface of the sampling test paper, thus avoiding the problem of poor laser measurement of paper thickness caused by the sampling test paper shifting in the H-shaped frame 2 when the laser measuring device detects the thickness of the test paper. A limiting device 15 is provided on the top surface of the wide plate 11. The limiting device 15 is used to limit the downward movement distance of the ring frame 6. An anti-loosening device 16 is provided on the top surface of the limiting device 15. The anti-loosening device 16 is used to straighten the surface of the sampling test paper.

[0025] The limiting device 15 includes two strip plates 151, which are fixed to the top surface of the wide plate 11 and are located on the front and back of the ring frame 6 respectively. T-shaped rod 152, T-shaped rod 152 is fixed on the left and right sides of the two strip plates 151 respectively; Four grooved frames 153 are fixed in pairs on the left and right sides of the H-shaped frame 2, and a sliding groove is opened at the front and back of each of the four grooved frames 153. Two concave plates 154 are fixed to the top surface of the four groove frames 153 respectively; The outer wall of the T-shaped rod 152 makes sliding contact with the inner wall of the groove of the four groove frames 153; The grooves of the four recessed frames 153 are used to limit the downward movement distance of each T-shaped bar 152; While the U-shaped plate 8 drives the wide plate 11 to move downward, the wide plate 11 drives the strip plate 151 to move downward, and the strip plate 151 drives the T-shaped rod 152 to move downward. The H-shaped frame 2 supports the groove frame 153, and the groove frame 153 supports the concave plate 154. The T-shaped rod 152 slides downward in the groove of the groove frame 153. The groove of the groove frame 153 limits the T-shaped rod 152, restricting the downward movement distance of the T-shaped rod 152. This avoids the problem of inaccurate detection by the photosensitive plate 9 and the laser head 10 when the laser measuring device detects the thickness of the paper, as the photosensitive plate 9 and the laser head 10 move downward too deeply.

[0026] A metal plate 155 is fixed in the middle of the top surface of each of the two strip plates 151. Two vertical rods 156 are fixed through the top surface of each of the two concave plates 154. Two magnetic blocks 157 are fixed on the bottom surface of the four vertical rods 156. The two magnetic blocks 157 are located above the two metal plates 155. As the strip plate 151 moves downwards, driving the T-shaped rod 152 downwards, the strip plate 151 also moves the metal plate 155 downwards. The concave plate 154 supports the vertical rod 156, and the vertical rod 156 supports the magnetic block 157. The operator turns off the power to the magnetic block 157 via the control panel, causing the magnetic block 157 to lose its magnetism. When the ring frame 6 moves upwards, the strip plate 151 moves the metal plate 155 upwards, and the metal plate 155 contacts the bottom of the magnetic block 157. The operator then supplies power to the magnetic block 157 via the control panel, causing the magnetic block 157 to generate magnetic force and attract the metal plate 155. This avoids the problem of the operator accidentally starting the equipment and injuring the operator due to the strip plate 13 when the laser measuring device is used to detect the thickness of the test paper.

[0027] The anti-loosening device 16 includes: four L-shaped groove plates 161, which are fixed in pairs on both sides of the top surface of the metal plate 155. Two round rods 162 are respectively installed through and rotatably mounted on one side of the four L-shaped slot plates 161 that are close to each other; U-shaped arc frame 163, which is fixed to the outer wall of the two round rods 162 respectively; The circular roller 164 is rotatably installed on the left and right sides of the inner wall of the two U-shaped arc frames 163 respectively; The 164 circular roller is used to flatten the surface of the test paper; While the strip plate 151 drives the metal plate 155 downward, the metal plate 155 drives the L-shaped groove plate 161 downward, the L-shaped groove plate 161 drives the round rod 162 downward, the round rod 162 drives the U-shaped arc frame 163 downward, the U-shaped arc frame 163 drives the round roller 164 downward, the round roller 164 contacts the surface of the sampling test paper, and under the action of the squeezing force, the round roller 164 rolls on the surface of the sampling test paper, the round rod 162 rotates in the L-shaped groove plate 161, the two U-shaped arc frames 163 rotate into a figure-eight shape, and the round roller 164 straightens the surface of the sampling test paper, thereby avoiding the problem of poor equipment detection effect caused by wrinkles on the surface of the sampling test paper when the laser measuring device detects the thickness of the test paper.

[0028] Two U-shaped arc frames 163 are respectively fixed with an arc plate 165 on the side away from each other. An arc-shaped spring piece 166 is respectively fixed on the outer wall of the two arc plates 165. A plate 167 is respectively fixed at the end of the two arc plates 166 away from the two arc plates 165. The top surface of the two plates 167 is fixedly connected to the bottom surface of the wide plate 11. As the round rod 162 rotates within the L-shaped groove plate 161, it drives the U-shaped arc frame 163 to rotate. The U-shaped arc frame 163 then drives the arc plate 165 to rotate, which in turn drives the arc-shaped spring piece 166 to rotate. The arc-shaped spring piece 166 is constrained by the plate 167, causing it to deform. Under the elastic force of the arc-shaped spring piece 166, when the ring frame 6 moves upward, the round rod 162 resets within the U-shaped arc frame 163. This avoids the problem of poor surface straightening of the test paper caused by the inconvenience of resetting the U-shaped arc frame 163 when the laser measuring device is detecting the thickness of the test paper.

[0029] Working principle: Open the cabinet door on cabinet 1, place the sampled test paper on top of the H-shaped frame 2, close the cabinet door, the servo motor 4 drives the screw 5 to rotate reciprocally. Under the constraint of the sliding groove of the frame 3, the ring frame 6 moves up and down in the threaded groove of the screw 5. The ring frame 6 slides up and down in the sliding groove of the frame 3. The ring frame 6 drives the vibration damping component 7 to move up and down. The ring frame 6 moves up and down on the U-shaped frame 701. The ring frame 6 drives the corner frame 702 to move up and down. The corner frame 702 drives the concave plate 703 to move up and down. The concave plate 703 drives the rubber roller 704 to move up and down. The rubber roller 704 rolls on the surface of the U-shaped frame 701. Under the action of friction, the vibration of the ring frame 6 during movement is reduced. The ring frame 6 drives the U-shaped frame 701 to move up and down. The U-shaped plate 8 moves downward, which in turn moves the photosensitive plate 9 downward. The U-shaped plate 8 then moves the laser head 10 downward. When the photosensitive plate 9 and the laser head 10 move above the sampling test paper, the photosensitive plate 9 receives the infrared laser emitted by the laser head 10, indicating that the thickness of the sampling test paper meets the requirements. When the infrared laser received by the photosensitive plate 9 is blocked by the sampling test paper, it indicates that the thickness of the sampling test paper does not meet the requirements. The U-shaped plate 8 moves the wide plate 11 downward, which in turn moves the U-shaped rod 12 downward. The U-shaped rod 12 moves the strip plate 13 downward, and the strip plate 13 contacts the surface of the sampling test paper. The strip plate 13 slides upward within the wide plate 11, and the spring 14 on the strip plate 13 is compressed. Under the elastic force of the spring 14, the strip plate 13 presses against the surface of the sampling test paper. The wide plate 11 drives the strip plate 151 to move downward, the strip plate 151 drives the T-shaped rod 152 to move downward, the T-shaped rod 152 slides downward in the groove of the groove frame 153, and the groove of the groove frame 153 limits the T-shaped rod 152. The strip plate 151 drives the metal plate 155 to move downwards. The concave plate 154 supports the vertical rod 156, and the vertical rod 156 supports the magnetic block 157. When the power supply on the magnetic block 157 is turned off, the magnetic block 157 loses its magnetism. The strip plate 151 drives the metal plate 155 to move upwards. The metal plate 155 and the magnetic block 157 make contact from below. Power is supplied to the magnetic block 157, and the magnetic block 157 generates magnetic force, attracting the metal plate 155. Metal plate 155 drives L-shaped groove plate 161 to move downward, L-shaped groove plate 161 drives round rod 162 to move downward, round rod 162 drives U-shaped arc frame 163 to move downward, U-shaped arc frame 163 drives round roller 164 to move downward, round roller 164 contacts the surface of sampling test paper, under the action of extrusion force, round roller 164 rolls on the surface of sampling test paper, round rod 162 rotates in L-shaped groove plate 161, two U-shaped arc frames 163 rotate to a figure-eight shape, round roller 164 straightens the surface of sampling test paper; The round rod 162 drives the U-shaped arc frame 163 to rotate, the U-shaped arc frame 163 drives the arc plate 165 to rotate, the arc plate 165 drives the arc-shaped spring piece 166 to rotate, the arc-shaped spring piece 166 is restricted by the plate 167, and the arc-shaped spring piece 166 deforms.

[0030] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered in all respects as exemplary and non-limiting, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0031] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A laser measuring device for detecting the thickness of paper, characterized in that, include: Cabinet (1), with an H-shaped frame (2) installed at the bottom of the cabinet (1); The frame (3) is located at the bottom of the cabinet (1), and a sliding groove is provided on the right side of the frame (3); Servo motor (4), the servo motor (4) is disposed on the top surface of the frame (3); Screw (5), which is installed through and rotatably inside the top of the frame (3); Ring frame (6), which is slidably mounted on the outer wall of screw (5); Vibration damping component (7), the vibration damping component (7) is disposed on the right side of the frame shell (3); U-shaped plate (8), the U-shaped plate (8) is fixed to the bottom right side of the ring frame (6); Photosensitive plate (9), the photosensitive plate (9) is fixed to the left side of the inner wall of the U-shaped plate (8); Laser head (10), the laser head (10) penetrates and is fixed to the right side of the inner wall of the U-shaped plate (8); A wide plate (11) is fixed to the top of the inside of the U-shaped plate (8); Two U-shaped rods (12) are inserted through and slidably mounted on the top surface of the wide plate (11); Strip (13), the strip (13) is fixed to the bottom surface of two U-shaped rods (12); Springs (14) are respectively disposed between the top surface of the strip (13) and the bottom surface of the wide plate (11); The strip (13) presses the surface of the test paper by the elastic force of the spring (14).

2. The laser measuring device for detecting the thickness of paper according to claim 1, characterized in that, The cabinet (1) has four support feet on its bottom surface, a control console is installed on the left side of the front of the cabinet (1), and a cabinet door is hinged to the right side of the front of the cabinet (1).

3. The laser measuring device for detecting the thickness of paper according to claim 2, characterized in that, The screw (5) has a non-self-locking threaded groove on its outer wall. The inner wall of the ring frame (6) meshes with the outer wall of the threaded groove of the screw (5). The outer wall of the ring frame (6) slides in contact with the inner wall of the sliding groove of the frame shell (3). The top surface of the ring frame (6) has a square opening.

4. The laser measuring device for detecting the thickness of paper according to claim 3, characterized in that, The vibration damping assembly (7) includes: a U-shaped frame (701), a corner frame (702), a concave plate (703), and a rubber roller (704). The U-shaped frame (701) is fixed on the right side of the frame (3) and is located inside the square opening of the ring frame (6). The corner frame (702) is fixed on the bottom surface of the ring frame (6). The concave plate (703) is fixed on the left side of the corner frame (702). The rubber roller (704) is rotatably mounted on the inner wall of the concave plate (703). The outer wall of the rubber roller (704) is in rolling contact with the right side of the U-shaped frame (701).

5. The laser measuring device for detecting the thickness of paper according to claim 4, characterized in that, The frame (3) is located on the left side of the H-shaped frame (2), the right side of the photosensitive plate (9) is aligned with the left side of the laser head (10), and the wide plate (11) is located above the H-shaped frame (2).

6. The laser measuring device for detecting the thickness of paper according to claim 5, characterized in that, The top surface of the wide plate (11) is provided with a limiting device (15), which is used to limit the downward movement distance of the ring frame (6); The top surface of the limiting device (15) is provided with an anti-loosening device (16), which is used to straighten the surface of the sampling test paper.

7. The laser measuring device for detecting the thickness of paper according to claim 6, characterized in that, The limiting device (15) includes: two strip plates (151), the two strip plates (151) are fixed on the top surface of the wide plate (11), and the two strip plates (151) are located on the front and back of the ring frame (6) respectively; T-shaped rods (152) are fixed to the left and right sides of the two strip plates (151), respectively; Four grooved frames (153) are fixed in pairs on the left and right sides of the H-shaped frame (2), and a sliding groove is opened at the front and back of each of the four grooved frames (153). Two concave plates (154) are respectively fixed on the top surface of four groove frames (153); The outer wall of the T-shaped rod (152) slides in contact with the inner wall of the groove of the four groove frames (153); The grooves of the four groove frames (153) are used to limit the downward movement distance of each T-bar (152).

8. The laser measuring device for detecting the thickness of paper according to claim 7, characterized in that, A metal plate (155) is fixed in the middle of the top surface of each of the two strip plates (151). Two vertical rods (156) are fixed through the top surface of each of the two concave plates (154). Two magnetic blocks (157) are fixed on the bottom surface of the four vertical rods (156). The two magnetic blocks (157) are located above the two metal plates (155).

9. A laser measuring device for detecting the thickness of paper according to claim 8, characterized in that, The anti-loosening device (16) includes: four L-shaped groove plates (161), and the four L-shaped groove plates (161) are fixed in pairs on both sides of the top surface of the metal plate (155); Two round rods (162) are respectively installed through and rotatably mounted on one side of four L-shaped slot plates (161) that are close to each other; U-shaped arc frame (163), the U-shaped arc frame (163) is fixed on the outer wall of two round rods (162); Circular rollers (164) are rotatably mounted on the left and right sides of the inner walls of the two U-shaped arc frames (163); The circular roller (164) is used to flatten the surface of the test paper.

10. A laser measuring device for detecting the thickness of paper according to claim 9, characterized in that, An arc plate (165) is fixed to one side of each of the two U-shaped arc frames (163) that are far apart from each other. An arc-shaped spring piece (166) is fixed to the outer wall of each of the two arc plates (165). A plate (167) is fixed to one end of each of the two arc plates (166) that is far away from the two arc plates (165). The top surface of the two plates (167) is fixedly connected to the bottom surface of the wide plate (11).

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