Printing machine accessory laser detection device

Abstract

The invention discloses a printing machine accessory laser detection device, and relates to the technical field of printing machine accessory production, the printing machine accessory laser detection device comprises a tool substrate and a laser detection assembly, the laser detection assembly is arranged below the tool substrate, and the laser detection assembly comprises an air cylinder fixed to the back end of the tool substrate through a bolt; a connecting plate is fixedly connected to the telescopic end of the air cylinder, a lifting rod is fixedly connected to the bottom of the tail end of the connecting plate, gear rings are fixed to the middle of the lifting rod in the radial direction at equal intervals, and a prism is fixedly installed at the tail end of the lifting rod. According to the non-contact measurement scheme based on the laser displacement sensor, the laser displacement sensor is responsible for measuring the position of the inner wall of the roller, the prism is used for changing the direction of the laser, the upper computer software is responsible for data processing and display, and compared with a traditional laser coaxial displacement meter, the laser displacement sensor is lower in cost and more accurate in measurement. Physical contact with the inner wall of the roller is not needed in the whole measurement process, and contact damage is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of printing machine accessories production, in particular to a laser detection device for printing machine accessories. Background Art

[0002] In the field of printing machinery manufacturing, the precise measurement of the inner diameter of the roller is directly related to core performance indicators such as printing pressure uniformity and overprint accuracy.

[0003] The measurement technologies currently used in the industry have the following significant defects: (1) Although mechanical contact measurement (such as micrometers and pneumatic measuring instruments) can achieve an accuracy of ±5μm, the physical contact between the measuring head and the inner wall of the roller can easily cause scratches on the chrome plating, and single-point measurement takes up to 3-5 minutes per piece; (2) Existing non-contact solutions such as laser coaxial displacement meters avoid contact damage, but their complex optical path system leads to high equipment costs; (3) Traditional methods cannot simultaneously achieve 360° full-circle roundness detection, and multiple clamping and positioning are required, resulting in large cumulative errors. Summary of the Invention

[0004] The object of the present invention is to provide a laser detection device for printing machine accessories to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a laser detection device for printing machine accessories, comprising a tooling base plate and a laser detection assembly, wherein a laser detection assembly is arranged below the tooling base plate, and the laser detection assembly comprises a cylinder bolted to the back end of the tooling base plate, the telescopic end of the cylinder is fixedly connected to a connecting plate, and the bottom end of the connecting plate is fixedly connected to a lifting rod, a gear ring is fixed at equal radial intervals in the middle of the lifting rod, and a prism is fixedly installed at the end of the lifting rod, laser displacement sensors are fixedly installed on both sides of the lifting rod, and both laser displacement sensors are electrically connected to the host computer through signal cables.

[0006] Furthermore, the two laser displacement sensors are arranged side by side and vertically illuminate the two sides of the prism, and the laser light emitted by the two laser displacement sensors is bent ninety degrees and illuminates the two sides of the inner wall of the drum.

[0007] Furthermore, a mounting plate is fixedly mounted on one end of the tooling base plate, and a motor is fixed by bolts on the bottom of the mounting plate.

[0008] Furthermore, the rotating end of the motor is fixedly connected to a driving pulley, and an outer sleeve of the driving pulley is provided with a synchronous belt.

[0009] Furthermore, the synchronous belt is rotated to transmit power to a driven pulley at one end away from the driving pulley, and the driven pulley is rotatably mounted on the other end of the tooling base plate through a bottom slewing bearing.

[0010] Furthermore, a sleeve is coaxially connected to the bottom of the driven pulley, and the inner diameter of the sleeve is larger than the outer diameter of the lifting rod.

[0011] Furthermore, the sleeve is transmission-connected to one end away from the driven pulley with a U-shaped plate, and guide grooves are symmetrically provided on both sides of the top of the U-shaped plate.

[0012] Furthermore, a linkage assembly is provided inside the U-shaped plate recess, and the linkage assembly includes a bidirectional screw rod rotatably mounted on the inner wall of the U-shaped plate recess, and the spiral directions on both sides of the bidirectional screw rod are opposite.

[0013] Furthermore, the linkage assembly also includes a gear coaxially fixed to the middle of the bidirectional screw, and the outer edge teeth of the gear are engaged with the gear ring radially arranged in the middle of the lifting rod.

[0014] Furthermore, the linkage assembly also includes a sliding sleeve threadedly connected to both sides of the bidirectional screw rod, the top of the sliding sleeve is fixedly connected to a guide rod, and the guide rods on both sides slide and cooperate with the corresponding guide grooves respectively, the bottom end of the sliding sleeve is fixedly connected to a centering splint, and the "V"-shaped notches of the centering splints on both sides are relatively arranged to cooperate with the outer wall of the roller for centering.

[0015] The present invention provides a laser detection device for printing machine accessories, which has the following beneficial effects:

[0016] 1. This application is a non-contact measurement solution based on a laser displacement sensor, in which the laser displacement sensor is responsible for measuring the position of the inner wall of the drum, the prism is used to change the direction of the laser, and the host computer software is responsible for data processing and display. Compared with traditional laser coaxial displacement meters, laser displacement sensors are not only lower in cost, but also do not require physical contact with the inner wall of the drum during the entire measurement process, thereby avoiding contact damage.

[0017] 2. When the present application is in use, the stroke of the lower lifting rod driven by the cylinder is linked with the centering clamp on the outer wall of the drum. While driving the prism at the end of the lifting rod to penetrate into the interior of the drum accessory to be inspected to measure its inner diameter, the engagement of the outer edge teeth of the gear with the radially arranged gear ring in the middle of the lifting rod drives the sleeves on the two-way screws on both sides to close toward each other, thereby achieving centering clamping of the outer wall of the drum.

[0018] 3. When the present application is in use, due to the structural setting that the inner diameter of the sleeve is larger than the outer diameter of the lifting rod, when the rotating end of the motor is rotated to the driven pulley through the synchronous belt, the rotation of the U-shaped plate does not interfere with the lifting rod, so that the roller accessory clamped by the centering clamps on both sides of the U-shaped plate recess can rotate under the drive of the motor. During this period, the prism and the two laser displacement sensors cooperating with it remain stationary, and the inner diameter roundness data of the roller accessory can be dynamically acquired. Through multi-beam synchronous scanning and adaptive prism compensation technology, the equipment cost is reduced while supporting dynamic roundness analysis, which better reflects the circumferential uniformity of the roller accessory. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Schematic diagram of the overall structure of the device of the present invention;

[0020] Figure 2 It is a schematic cross-sectional structural diagram of the device of the present invention;

[0021] Figure 3 This is a schematic diagram of the cross-sectional structure of the U-shaped plate of the present invention;

[0022] Figure 4 This is a schematic diagram of the structure of the laser detection component of the present invention;

[0023] Figure 5 This is a schematic diagram of the linkage assembly structure of the present invention;

[0024] Figure 6 Schematic diagram of light refraction of the laser displacement sensor of the present invention.

[0025] In the figure: 1. Tooling base plate; 2. Laser detection assembly; 201. Cylinder; 202. Connecting plate; 203. Lifting rod; 204. Ring gear; 205. Prism; 206. Laser displacement sensor; 3. Mounting plate; 4. Motor; 5. Driving pulley; 6. Synchronous belt; 7. Driven pulley; 8. Slewing bearing; 9. Sleeve; 10. U-shaped plate; 11. Guide groove; 12. Linkage assembly; 1201. Bidirectional screw; 1202. Gear; 1203. Sleeve; 1204. Guide rod; 1205. Centering splint. DETAILED DESCRIPTION

[0026] The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0027] See also Figures 3 and 4 The present invention provides a technical solution: a laser detection device for printing machine accessories, comprising a tooling base plate 1 and a laser detection assembly 2, wherein the laser detection assembly 2 is provided below the tooling base plate 1, and the laser detection assembly 2 comprises a cylinder 201 fixed to the back end of the tooling base plate 1 by bolts, the telescopic end of the cylinder 201 is fixedly connected to a connecting plate 202, and the bottom end of the connecting plate 202 is fixedly connected to a lifting rod 203, a gear ring 204 is fixedly fixed at a radially equal interval in the middle of the lifting rod 203, and a prism 205 is fixedly installed at the end of the lifting rod 203, laser displacement sensors 206 are fixedly installed on both sides of the lifting rod 203, and the two laser displacement sensors 206 are electrically connected to a host computer through a signal cable, the two laser displacement sensors 206 are arranged side by side and vertically illuminate the two sides of the prism 205, and the laser light emitted by the two laser displacement sensors 206 is bent ninety degrees to illuminate the two sides of the inner wall of the cylinder;

[0028] The specific operation is as follows: the lifting rod 203 continues to descend, driving the prism 205 at its end to penetrate into the interior of the roller accessory to be inspected, and the two laser displacement sensors 206 are vertically irradiated on both sides of the prism 205 side by side, and then the laser light emitted by the two laser displacement sensors 206 is bent ninety degrees and irradiated on both sides of the inner wall of the roller, and the A value and B value collected by the two laser displacement sensors 206 are added to the fixed C value to obtain the inner diameter of the roller. The present application is a non-contact measurement solution based on the laser displacement sensor 206, wherein the laser displacement sensor 206 is responsible for measuring the position of the inner wall of the roller, the prism 205 is used to change the direction of the laser, and the upper computer software is responsible for data processing and display. Compared with the traditional laser coaxial displacement meter, the laser displacement sensor 206 is not only lower in cost, but also does not require physical contact with the inner wall of the roller during the entire measurement process, thereby avoiding contact damage;

[0029] See also Figures 1 to 2 , a mounting plate 3 is fixedly mounted on one end of the tooling base plate 1, and a motor 4 is fixed to the bottom of the mounting plate 3 with bolts, a driving pulley 5 is fixedly connected to the rotating end of the motor 4, and a synchronous belt 6 is provided on the outer sleeve of the driving pulley 5, and the synchronous belt 6 rotates away from the driving pulley 5 at one end thereof, and the driven pulley 7 is rotatably mounted on the other end of the tooling base plate 1 through a bottom slewing bearing 8, a sleeve 9 is coaxially connected to the bottom of the driven pulley 7, and the inner diameter of the sleeve 9 is larger than the outer diameter of the lifting rod 203;

[0030] The specific operation is as follows: due to the structural setting that the inner diameter of the sleeve 9 is larger than the outer diameter of the lifting rod 203, when the rotating end of the motor 4 is rotated and transmitted to the driven pulley 7 through the synchronous belt 6, the rotation of the U-shaped plate 10 does not interfere with the lifting rod 203, so that the roller accessory clamped by the centering clamps 1205 on both sides inside the recess of the U-shaped plate 10 can rotate under the drive of the motor 4. Here, the prism 205 and the two laser displacement sensors 206 cooperating with it remain stationary, and the inner diameter roundness data of the roller accessory can be dynamically acquired. Through multi-beam synchronous scanning and adaptive prism 205 compensation technology, the equipment cost is reduced while supporting dynamic roundness analysis, which better reflects the circumferential uniformity of the roller accessory.

[0031] See also Figures 5 and 6The sleeve 9 is connected to the driven pulley 7 at one end thereof in a transmission manner with a U-shaped plate 10, and guide grooves 11 are symmetrically provided on both sides of the top of the U-shaped plate 10. A linkage assembly 12 is provided inside the notch of the U-shaped plate 10. The linkage assembly 12 includes a bidirectional screw rod 1201 rotatably mounted on the inner wall of the notch of the U-shaped plate 10, and the spiral directions of the two sides of the bidirectional screw rod 1201 are opposite. The linkage assembly 12 also includes a gear 1202 coaxially fixed to the middle of the bidirectional screw rod 1201, and the outer edge of the gear 1202 is fixed to the middle of the bidirectional screw rod 1201. The gear teeth are meshed with the gear ring 204 radially arranged in the middle of the lifting rod 203. The linkage assembly 12 also includes a sleeve 1203 threadedly connected to both sides of the bidirectional screw rod 1201. The top of the sleeve 1203 is fixedly connected to a guide rod 1204, and the guide rods 1204 on both sides are respectively slidably matched with the corresponding guide grooves 11. The bottom of the sleeve 1203 is fixedly connected to a centering splint 1205, and the "V"-shaped notches of the centering splints 1205 on both sides are oppositely arranged to cooperate with the outer wall of the drum for centering.

[0032] The specific operation is as follows: the roller accessory to be tested is placed between the "V"-shaped notches of the centering splints 1205 on both sides, the cylinder 201 is activated and the lifting rod 203 is pulled through the connecting plate 202, so that the lifting rod 203 is lowered along the axial direction of the sleeve 9. During the descending process of the lifting rod 203, the gear ring 204 radially arranged in the middle is meshed with the outer edge teeth of the gear 1202, thereby driving the coaxial bidirectional screw rods 1201 on both sides of the gear 1202 to rotate synchronously. Since the spiral directions of the two sides of the bidirectional screw rod 1201 are opposite, the sliding sleeves 1203 on the bidirectional screw rods 1201 on both sides drive the centering splint 1 205 are closed towards each other, and finally the centering clamping of the outer wall of the drum is achieved through the "V"-shaped notches relatively set on the centering splints 1205 on both sides. The present application drives the stroke of the lower lifting rod 203 driven by the cylinder 201 to be linked with the centering splint 1205 on the outer wall of the drum. While driving the prism 205 at the end of the lifting rod 203 to penetrate into the interior of the drum accessory to be inspected to measure its inner diameter, it also drives the sleeves 1203 on the two-way screw rods 1201 on both sides to close towards each other through the engagement of the outer edge teeth of the gear 1202 and the radially set gear ring 204 in the middle of the lifting rod 203, thereby achieving the centering clamping of the outer wall of the drum.

[0033] In summary, when using the laser detection device for printing machine accessories:

[0034] First, place the roller accessory to be tested between the "V"-shaped notches of the centering splints 1205 on both sides, activate the cylinder 201 and pull the lifting rod 203 through the connecting plate 202, so that the lifting rod 203 descends along the axial direction of the sleeve 9. During the descending process of the lifting rod 203, the gear ring 204 radially arranged in the middle engages with the outer edge teeth of the gear 1202, thereby driving the coaxial bidirectional screw rods 1201 on both sides of the gear 1202 to rotate synchronously. Since the spiral directions of the two sides of the bidirectional screw rod 1201 are opposite, the sliding sleeves 1203 on the bidirectional screw rods 1201 on both sides drive the centering splint 120 5 are closed towards each other, and finally the centering clamping of the outer wall of the drum is achieved through the "V"-shaped notches arranged oppositely on the centering clamps 1205 on both sides. In this application, the stroke of the lower lifting rod 203 driven by the cylinder 201 is linked with the centering clamps 1205 on the outer wall of the drum. While driving the prism 205 at the end of the lifting rod 203 to penetrate into the interior of the drum component to be inspected to measure its inner diameter, the outer edge teeth of the gear 1202 and the gear ring 204 radially arranged in the middle of the lifting rod 203 are engaged, driving the sleeves 1203 on the two-way screw rods 1201 on both sides to close towards each other, thereby achieving the centering clamping of the outer wall of the drum;

[0035] Secondly, the lifting rod 203 continues to descend, driving the prism 205 at its end to penetrate into the interior of the roller accessory to be inspected. The two laser displacement sensors 206 are vertically irradiated side by side on both sides of the prism 205, and then the laser light emitted by the two laser displacement sensors 206 is bent ninety degrees and irradiated on both sides of the inner wall of the roller. The A value and B value collected by the two laser displacement sensors 206 are added to the fixed C value to obtain the inner diameter of the roller. The present application is a non-contact measurement solution based on the laser displacement sensor 206, wherein the laser displacement sensor 206 is responsible for measuring the position of the inner wall of the roller, the prism 205 is used to change the direction of the laser, and the upper computer software is responsible for data processing and display. Compared with the traditional laser coaxial displacement meter, the laser displacement sensor 206 is not only lower in cost, but also does not require physical contact with the inner wall of the roller during the entire measurement process, thereby avoiding contact damage;

[0036] Finally, due to the structural setting that the inner diameter of the sleeve 9 is larger than the outer diameter of the lifting rod 203, when the rotating end of the motor 4 is rotated and transmitted to the driven pulley 7 through the synchronous belt 6, the rotation of the U-shaped plate 10 does not interfere with the lifting rod 203, so that the roller accessory clamped by the centering clamps 1205 on both sides inside the recess of the U-shaped plate 10 can rotate under the drive of the motor 4. Here, the prism 205 and the two laser displacement sensors 206 cooperating with it remain stationary, and the inner diameter roundness data of the roller accessory can be dynamically acquired. Through multi-beam synchronous scanning and adaptive prism 205 compensation technology, the equipment cost is reduced while supporting dynamic roundness analysis, which better reflects the circumferential uniformity of the roller accessory.

[0037] It should be noted that, in this article, the terms "comprises", "includes" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or apparatus that includes a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements that are inherent to such process, method, article or apparatus.

[0038] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only used to help understand the method of the present invention and its core ideas. The above are only preferred implementation methods of the present invention. It should be pointed out that due to the limitations of textual expression, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of the present invention, they can make several improvements, modifications or changes, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of the present invention.

Claims

1. A laser detection device for printing machine accessories, comprising a tooling substrate (1) and a laser detection component (2), characterized in that: A laser detection assembly (2) is provided below the tooling base plate (1), and the laser detection assembly (2) comprises a cylinder (201) fixed to the back end of the tooling base plate (1) by bolts, the telescopic end of the cylinder (201) is fixedly connected to a connecting plate (202), and the bottom of the end of the connecting plate (202) is fixedly connected to a lifting rod (203), a gear ring (204) is fixedly provided at radially equal intervals in the middle of the lifting rod (203), and a prism (205) is fixedly installed at the end of the lifting rod (203), and laser displacement sensors (206) are fixedly installed on both sides of the lifting rod (203), and both laser displacement sensors (206) are electrically connected to a host computer via a signal cable.

2. The laser detection device for printing machine accessories according to claim 1, characterized in that: The two laser displacement sensors (206) are arranged side by side and vertically illuminate the two sides of the prism (205), and the laser light emitted by the two laser displacement sensors (206) is bent at ninety degrees and illuminates the two sides of the inner wall of the drum.

3. The laser detection device for printing machine accessories according to claim 2, characterized in that: A mounting plate (3) is fixedly mounted on one end of the tooling base plate (1), and a motor (4) is fixed to the bottom of the mounting plate (3) with bolts.

4. The laser detection device for printing machine accessories according to claim 3, characterized in that: The rotating end of the motor (4) is fixedly connected to a driving pulley (5), and the outer sleeve of the driving pulley (5) is provided with a synchronous belt (6).

5. The laser detection device for printing machine accessories according to claim 4, characterized in that: The synchronous belt (6) is rotated away from one end of the driving pulley (5) to transmit power to a driven pulley (7), and the driven pulley (7) is rotatably mounted on the other end of the tooling base plate (1) via a bottom slewing bearing (8).

6. The laser detection device for printing machine accessories according to claim 5, characterized in that: The bottom of the driven pulley (7) is coaxially connected to a sleeve (9), and the inner diameter of the sleeve (9) is larger than the outer diameter of the lifting rod (203).

7. The laser detection device for printing machine accessories according to claim 6, characterized in that: The sleeve (9) is transmission-connected to one end thereof away from the driven pulley (7) with a U-shaped plate (10), and guide grooves (11) are symmetrically provided on both sides of the top end of the U-shaped plate (10).

8. The laser detection device for printing machine accessories according to claim 7, characterized in that: A linkage assembly (12) is provided inside the notch of the U-shaped plate (10), and the linkage assembly (12) comprises a bidirectional screw rod (1201) rotatably mounted on the inner wall of the notch of the U-shaped plate (10), wherein the spiral directions of the two sides of the bidirectional screw rod (1201) are opposite.

9. The laser detection device for printing machine accessories according to claim 8, characterized in that: The linkage assembly (12) further comprises a gear (1202) coaxially fixed to the middle of the bidirectional screw rod (1201), and the outer edge teeth of the gear (1202) mesh with the gear ring (204) radially arranged in the middle of the lifting rod (203).

10. The laser detection device for printing machine accessories according to claim 9, characterized in that: The linkage assembly (12) further comprises a sleeve (1203) threadedly connected to both sides of the bidirectional screw rod (1201); a guide rod (1204) is fixedly connected to the top of the sleeve (1203); and the guide rods (1204) on both sides are respectively slidably engaged with the corresponding guide grooves (11); a centering splint (1205) is fixedly connected to the bottom end of the sleeve (1203); and the "V"-shaped notches of the centering splints (1205) on both sides are arranged opposite to each other and are engaged with the outer wall of the roller for centering.

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