Printer roller concentricity detection device and method

Abstract

The application relates to the technical field of concentricity detection, and provides a printer roller shaft concentricity detection device and method.The printer roller shaft concentricity detection device comprises a first mounting seat, a plurality of groups of printer roller shaft driving and limiting mechanisms arranged on the first mounting seat, each group of printer roller shaft driving and limiting mechanisms comprising two rotating driving rollers and one rotatable supporting roller sleeve, the three are parallel in pairs, the arrangement directions of the two rotating driving rollers in different groups of printer roller shaft driving and limiting mechanisms are different, the rotatable supporting roller sleeve can be close to or away from the corresponding two rotating driving rollers in the same group, a rotary driving device is in transmission connection with the rotating driving rollers, and a micrometer is used for contacting a to-be-detected printer roller shaft limited by the printer roller shaft driving and limiting mechanism, and the device can realize efficient detection of the concentricity of the printer roller shaft.

Description

Technical Field

[0001] This application relates to the field of concentricity detection technology, and more specifically, to a printer roller concentricity detection device and method. Background Technology

[0002] In printing equipment, the rollers are the core components responsible for paper transport, toner fixing, and image transfer. Whether it's the photosensitive drum, developing roller, or fixing roller, their concentricity accuracy directly affects print quality, such as color registration accuracy, image distortion, and paper jam rate. If the roller concentricity is off, it can lead to blurred images and periodic stripes, or even roller vibration, accelerated wear, and a significant shortened printer lifespan.

[0003] Therefore, strict concentricity testing is a key process in the manufacturing and assembly of printer rollers to ensure the printing quality of finished products.

[0004] Currently, the roller concentricity detection devices commonly used in the industry have a relatively simple structure. Existing detection devices typically only have a fixed roller placement position, and a set of rotating drive rollers support and drive the roller to be tested to rotate. This single-station design has obvious limitations in actual operation: only one printer roller can be loaded at a time during the detection process, and after the detection is completed, the machine must be stopped to unload and re-clamp the next one. The loading and unloading time is long, resulting in low overall detection efficiency and making it difficult to meet the cycle time requirements of mass production.

[0005] Furthermore, existing devices employ a relatively simplistic placement of the rollers, typically relying solely on their own gravity for horizontal support on the rotating drive rollers for rotation detection. This method can only simulate the roller's operation under a specific force direction (i.e., gravity vertically downwards). However, during actual printer operation, the rollers are subjected to a combination of forces from springs, opposing rollers, and paper tension, resulting in a non-constant force posture. Because existing devices cannot simulate or adjust the roller's placement under different force orientations, the detection results cannot fully reflect the roller's concentricity performance under actual operating conditions. In other words, they cannot investigate the impact of different force orientations on the roller's dynamic concentricity deviation, leading to a disconnect between the detection data and actual performance. Summary of the Invention

[0006] In view of this, this application provides a printer roller concentricity detection device to solve the technical problems of low detection efficiency and inability to perform printer roller concentricity detection under various placement postures in the prior art.

[0007] This application provides a printer roller concentricity detection device, wherein the printer roller concentricity detection device includes: First mounting base; Multiple sets of printer roller drive limiting mechanisms are set on the first mounting base. The printer roller drive limiting mechanism can limit the printer roller to be tested. Each set of printer roller drive limiting mechanism includes two rotating drive rollers and one rotatable support roller sleeve. The two rotating drive rollers and one rotatable support roller sleeve are parallel to each other. The arrangement direction of the two rotating drive rollers in different sets of printer roller drive limiting mechanisms is different. The rotatable support roller sleeve can move closer to or further away from the corresponding two rotating drive rollers in the same set. A rotary drive device is connected to the rotary drive roller to drive two rotary drive rollers in the same group of printer roller shaft drive limit mechanism to rotate in the same direction. A dial indicator, wherein the measuring rod of the dial indicator is used to contact the printer roller shaft under test, which is limited by the printer roller shaft drive limit mechanism.

[0008] Furthermore, the printer roller concentricity detection device includes a clamp mounting rod, the axis of which is parallel to the axis of the rotating drive roller, and multiple sets of printer roller drive limiting mechanisms are arranged sequentially around the axis of the clamp mounting rod. A dial indicator clamp corresponding to the number and position of the multiple sets of printer roller drive limiting mechanisms is provided on the clamp mounting rod around its axis.

[0009] Furthermore, the printer roller concentricity detection device includes a linear telescopic drive mechanism, which includes a drive unit and the clamp mounting rod. The drive unit can drive the clamp mounting rod to perform linear reciprocating motion along its axis.

[0010] Furthermore, the linear telescopic drive mechanism is a transverse cylinder, the drive unit is the cylinder body of the transverse cylinder, and the clamp mounting rod is the piston rod of the transverse cylinder.

[0011] Furthermore, the dial indicator fixture includes a fixed clamping plate and a movable clamping plate disposed on the fixture mounting rod. The first end of the movable clamping plate is hinged to the fixture mounting rod via a hinge shaft. A torsion spring is disposed on the hinge shaft, and the torsion spring generates an elastic force that causes the second end of the movable clamping plate to move toward the fixed clamping plate.

[0012] Furthermore, the rotary drive device includes a power source and a drive gear connected to the power source. Each of the rotary drive rollers is coaxially connected to a driven gear. The driven gears corresponding to each of the rotary drive rollers are arranged around the drive gear, and each driven gear corresponding to each of the rotary drive rollers meshes with the drive gear.

[0013] Furthermore, the power source is an electric motor.

[0014] Furthermore, the first mounting base includes a first base plate and a first and a second upright plate connected to the first base plate. Each group of printer roller shaft drive limiting mechanisms includes a number of movable shafts consistent with the number of rotatable support roller sleeves. Each rotatable support roller sleeve is rotatably fitted onto a corresponding movable shaft. The first upright plate has a first long groove corresponding to each movable shaft, and the second upright plate has a second long groove corresponding to each movable shaft. The first end of the movable shaft has a first screw portion, and the other end of the movable shaft has a second screw portion. The first screw portion passes through the corresponding first long groove, and a first locking nut is installed on the first screw portion. The second screw portion passes through the corresponding second long groove, and a second locking nut is installed on the second screw portion. When the movable shaft moves along the first and second long grooves, the movable shaft approaches or moves away from the two corresponding rotating drive rollers in the same group.

[0015] Furthermore, the printer roller concentricity detection device includes a second mounting base, and a hinge block is provided below one end of the first mounting base. The hinge block is hinged to the second mounting base. The printer roller concentricity detection device includes a lifting support device provided on the second mounting base. The lifting support device supports the lower surface of the other end of the first mounting base. When the lifting support device moves up and down, it can keep the first mounting base in a horizontal position.

[0016] In addition, the present invention also provides a method for detecting the concentricity of a printer roller, wherein the method is implemented using the above-mentioned printer roller concentricity detection device, and the method includes a first test mode, a second test mode and a third test mode. The first test mode includes the following steps: a1. Place a printer roller shaft to be tested on the two rotating drive rollers of each group of printer roller shaft drive limit mechanisms, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft to be tested. a2. Install dial indicators on each dial indicator fixture, and make the measuring rod of each dial indicator abut against the corresponding roller shaft of the printer to be tested; a3. The rotary drive device drives the two rotary drive rollers in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of each dial indicator. a4. The linear telescopic drive mechanism drives the fixture mounting rod to move, thereby changing the measurement point of each dial indicator on the roller shaft of the printer to be tested along the axial direction of the fixture mounting rod. Each time the measurement point is changed, the measurement data result of each dial indicator is read. The second test mode includes the following steps: b1. Place a printer roller shaft to be tested on the two rotating drive rollers of a set of printer roller shaft drive limit mechanisms, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft to be tested. b2. Install a dial indicator on the dial indicator fixture of the corresponding printer roller shaft to be tested, and make the measuring rod of the dial indicator abut against the corresponding printer roller shaft to be tested. b3. The rotary drive device drives the two rotary drive rollers in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of the dial indicator. b4. Place the printer roller shaft under test on the two rotating drive rollers of each group of printer roller shaft drive limit mechanism in turn, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft under test. Then repeat steps b2 and b3. The third test mode includes the following steps: c1. Place a printer roller shaft to be tested on the two rotating drive rollers of each group of printer roller shaft drive limit mechanisms, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft to be tested. c2. Install dial indicators on each dial indicator fixture, and make the measuring rod of each dial indicator abut against the corresponding roller shaft of the printer to be tested; c3. The rotary drive device drives the two rotary drive rollers in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of each dial indicator. c4. The lifting support device moves up and down to change the tilt angle of the first mounting base. Each time the tilt angle of the first mounting base is changed, the measurement data of each dial indicator is read.

[0017] The beneficial effects of the printer roller concentricity detection device provided by the present invention are as follows: Compared to existing technologies, the printer roller concentricity detection device provided by this invention has multiple sets of printer roller drive limiting mechanisms. Firstly, each set of these mechanisms can limit one printer roller to be tested, allowing the device to simultaneously detect the concentricity of multiple rollers, achieving efficient detection. Secondly, the two rotating drive rollers in different sets of these mechanisms are arranged in different directions. Therefore, when the same printer roller is limited by different sets of these mechanisms, it can be positioned and limited on different mechanisms under varying force conditions, enabling detection of the same roller under multiple force postures. Measuring the concentricity of printer rollers helps to explore the influence of different force orientations on the concentricity deviation of the printer roller under test, making the test data closer to the concentricity of the printer roller under test in actual use. For example, in one set of printer roller drive limiting mechanisms, the two rotating drive rollers are arranged in the horizontal direction, and the printer roller under test in this set of printer roller drive limiting mechanisms is supported vertically downward by gravity on the two rotating drive rollers. In another set of printer roller drive limiting mechanisms, the two rotating drive rollers are arranged in a direction that is inclined at an angle to the horizontal direction. Then, the printer roller under test in the other set of printer roller drive limiting mechanisms is supported on the two rotating drive rollers with an upward or downward pressure under the pressure of the rotatable support roller sleeve. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this application, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 This is a perspective view of a printer roller concentricity detection device according to an embodiment of this application; Figure 2 for Figure 1 Enlarged view of point A in the middle; Figure 3 for Figure 1 Enlarged view of point B in the middle; Figure 4 for Figure 1 Enlarged view of point C in the middle; Figure 5 This is a front view of a printer roller concentricity detection device according to an embodiment of this application; Figure 6 for Figure 5 Enlarged view of point D in the middle; Figure 7This is a partial cross-sectional perspective view of a printer roller concentricity detection device according to an embodiment of this application.

[0020] Explanation of reference numerals in the attached figures: 1-Rotating drive roller; 2-Rottenable support roller sleeve; 3-Dial indicator; 4-Printer roller shaft to be tested; 5-Clamp mounting rod; 6-Drive unit; 7-Fixed clamping plate; 8-Modible clamping plate; 9-Hinge shaft; 10-Drive gear; 11-Driven gear; 12-Motor; 13-First locking nut; 14-Second locking nut; 15-Mounting shaft; 16-Second mounting seat; 17-Hinge block; 100-First mounting seat; 101-First base plate; 102-First upright plate; 103-Second upright plate; 104-First long groove; 105-Second long groove; 200-Moving shaft; 201-First screw part; 202-Second screw part; 300-Lifting top support device; 301-Arc-surface top support part. Detailed Implementation

[0021] To facilitate understanding of this application, a more complete description will be provided below with reference to the accompanying drawings. One or more embodiments of this application are exemplarily shown in the drawings to provide a more accurate and thorough understanding of the technical solutions disclosed herein. However, it should be understood that this application can be implemented in many different forms and is not limited to the embodiments described below.

[0022] In the accompanying drawings of this application, the same or similar reference numerals correspond to the same or similar components. In the description of this application, it should be understood that if terms such as "upper," "lower," "left," "right," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, they are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the terms used to describe positional relationships in the drawings are only for illustrative purposes and should not be construed as limiting this application. For those skilled in the art, the specific meaning of the above terms can be understood according to the specific circumstances.

[0023] Furthermore, if the embodiments of this application involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, features defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, if "and / or" or "and / or" appears throughout the text, its meaning includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously.

[0024] Furthermore, the technical solutions of the various embodiments can be combined with each other, but only if they are based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed in this application.

[0025] See Figures 1 to 7 This application provides a printer roller concentricity detection device, wherein the printer roller concentricity detection device includes: First mounting base 100; Multiple sets of printer roller drive limiting mechanisms are provided on the first mounting base 100. The printer roller drive limiting mechanism can limit the printer roller 4 under test. Each set of printer roller drive limiting mechanism includes two rotating drive rollers 1 and one rotatable support roller sleeve 2. The two rotating drive rollers 1 and the rotatable support roller sleeve 2 are parallel to each other. The arrangement direction of the two rotating drive rollers 1 in different sets of printer roller drive limiting mechanisms is different. For example, the two rotating drive rollers 1 in one set of printer roller drive limiting mechanism are arranged in the horizontal direction, while the two rotating drive rollers 1 in another set of printer roller drive limiting mechanism are arranged in a direction with an angle to the horizontal direction. The rotatable support roller sleeve 2 can approach or move away from the corresponding two rotating drive rollers 1 in the same set. When the printer roller 4 under test contacts and abuts against the two rotating drive rollers 1, the corresponding rotatable support roller sleeve 2 approaches the printer roller 4 under test, which can limit the printer roller 4 under test between the two rotating drive rollers 1 and the rotatable support roller sleeve 2. A rotary drive device is connected to the rotary drive roller 1 to drive the two rotary drive rollers 1 in the same group of printer roller shaft drive limit mechanism to rotate in the same direction. When the printer roller shaft 4 under test is supported on the two rotary drive rollers 1, the two rotary drive rollers 1 can drive the printer roller shaft 4 under test to rotate through friction. Dial indicator 3, the measuring rod of dial indicator 3 is used to contact the printer roller 4 under test, which is limited by the printer roller drive limit mechanism.

[0026] Because the printer roller concentricity detection device provided by this invention has multiple sets of printer roller drive limiting mechanisms, on the one hand, each set of printer roller drive limiting mechanisms can limit one printer roller 4 to be tested, so that the printer roller concentricity detection device can simultaneously perform concentricity detection on multiple printer roller 4 to be tested, achieving efficient detection. On the other hand, the arrangement directions of the two rotating drive rollers 1 in different sets of printer roller drive limiting mechanisms are different. Therefore, when the same printer roller 4 to be tested is limited by different sets of printer roller drive limiting mechanisms, it can be placed and limited on different printer roller drive limiting mechanisms under different force conditions, so as to detect the same printer roller 4 to be tested under various force postures. The concentricity of the test printer roller 4 helps to explore the influence of different force orientations on the concentricity deviation of the test printer roller 4, making the test data closer to the concentricity of the test printer roller 4 in actual use. For example, in one set of printer roller drive limiting mechanisms, the two rotating drive rollers 1 are arranged in the horizontal direction, and the test printer roller 4 in this set of printer roller drive limiting mechanisms is supported vertically downward by gravity on the two rotating drive rollers 1. In another set of printer roller drive limiting mechanisms, the two rotating drive rollers 1 are arranged in a direction that is inclined at an angle to the horizontal direction. Then, the test printer roller 4 in the other set of printer roller drive limiting mechanisms is supported on the two rotating drive rollers 1 with an upward or downward pressure under the pressure of the rotatable support roller sleeve 2.

[0027] According to one embodiment of the present invention, the printer roller concentricity detection device includes a clamp mounting rod 5, the axis of the clamp mounting rod 5 is parallel to the axis of the rotating drive roller, multiple sets of printer roller drive limiting mechanisms are arranged sequentially around the axis of the clamp mounting rod 5, and a dial indicator clamp corresponding to the number and position of the multiple sets of printer roller drive limiting mechanisms is provided on the clamp mounting rod 5 around its axis.

[0028] According to one embodiment of this application, the printer roller concentricity detection device includes a linear telescopic drive mechanism. The linear telescopic drive mechanism includes a drive unit 6 and a clamp mounting rod 5. The drive unit 6 can drive the clamp mounting rod 5 to perform linear reciprocating motion along its axis. When the linear telescopic drive mechanism drives the clamp mounting rod 5 to move, it can change the measurement points of each dial indicator 3 on the printer roller 4 to be tested along the axial direction of the clamp mounting rod 5, so as to measure the concentricity data of different axial positions of the printer roller 4 to be tested.

[0029] According to a specific embodiment of this application, the linear telescopic drive mechanism is a transverse cylinder, the drive part 6 is the cylinder body of the transverse cylinder, and the clamp mounting rod 5 is the piston rod of the transverse cylinder.

[0030] In other embodiments, the linear telescopic drive mechanism may also be a hydraulic cylinder or an electric guide rail.

[0031] According to a specific embodiment of this application, the dial indicator clamp includes a fixed clamping plate 7 and a movable clamping plate 8 disposed on the clamp mounting rod 5. The first end of the movable clamping plate 8 is hinged to the clamp mounting rod 5 via a hinge shaft 9. A torsion spring (not shown) is disposed on the hinge shaft 9. The torsion spring generates an elastic force that causes the second end of the movable clamping plate 8 to move toward the fixed clamping plate 7, so that the circular body of the dial indicator 3 can be clamped and fixed between the fixed clamping plate 7 and the movable clamping plate 8.

[0032] According to a specific embodiment of this application, the rotary drive device includes a power source and a drive gear 10 connected to the power source. Each rotary drive roller 1 is coaxially connected to a driven gear 11. The driven gear 11 corresponding to each rotary drive roller 1 is arranged around the drive gear 10, and the driven gear 11 corresponding to each rotary drive roller 1 meshes with the drive gear 10.

[0033] According to a preferred embodiment of this application, the printer roller concentricity detection device provided in this application has at least 3 sets of printer roller drive limiting mechanisms, such as 5 sets. Preferably, the arrangement direction of the two rotating drive rollers 1 in each set of printer roller drive limiting mechanisms is distributed on the five sides of the same pentagon. At this time, the clamp mounting rod 5 is adapted to be a rod structure with a pentagonal cross section.

[0034] According to one embodiment of this application, the power source is an electric motor 12.

[0035] According to one embodiment of this application, the first mounting base 100 includes a first base plate 101 and a first upright plate 102 and a second upright plate 103 connected to the first base plate 101. Each set of printer roller drive limiting mechanisms includes a number of movable shafts 200 equal to the number of rotatable support roller sleeves 2. Each rotatable support roller sleeve 2 is rotatably mounted on a corresponding movable shaft 200. The first upright plate 102 has a first elongated groove 104 corresponding to each movable shaft 200, and the second upright plate 103 has a second elongated groove 105 corresponding to each movable shaft 200. The first end of the movable shaft 200 has a first screw portion 201, and the other end of the movable shaft 200 has a second screw portion 202. The first screw portion 201 passes through the corresponding first long groove 104, and a first locking nut 13 is installed on the first screw portion 201. The second screw portion 202 passes through the corresponding second long groove 105, and a second locking nut 14 is installed on the second screw portion 202. When the movable shaft 200 moves along the first long groove 104 and the second long groove 105, the movable shaft 200 moves closer to or away from the two corresponding rotating drive rollers 1 in the same group.

[0036] According to a specific embodiment of this application, the output shaft of the motor 12 is rotatably connected to the drive gear 10 through the first vertical plate 102, the clamp mounting rod 5 is telescopically connected to the second vertical plate 103, the motor 12 and the transverse cylinder are supported on the first base plate 101, each rotation drive roller 1 is mounted on the mounting shaft 15 (fixed or integrally formed), one end of the mounting shaft 15 is rotatably connected to the first vertical plate 102, the other end of the mounting shaft 15 is rotatably connected to the second vertical plate 103, and the driven gear 11 is mounted on the mounting shaft 15 (fixed or integrally formed).

[0037] According to one embodiment of this application, the printer roller concentricity detection device includes a second mounting base 16. A hinge block 17 is provided below one end of a first mounting base 100. The hinge block 17 is hinged to the second mounting base 16. The printer roller concentricity detection device includes a lifting support device 300 provided on the second mounting base 16. The lifting support device 300 supports the lower surface of the other end of the first mounting base 100. When the lifting support device 300 moves up and down, it can keep the first mounting base 100 in a horizontal position. The lifting support device 300 can be a lifting cylinder or a lifting hydraulic cylinder. Taking the lifting support device 300 as a lifting cylinder as an example, preferably, the upper end of the piston rod of the lifting cylinder has an arc-shaped support portion 301, which supports the lower surface of the other end of the first mounting base 100.

[0038] In addition, this application also provides a printer roller concentricity detection method, wherein the printer roller concentricity detection method is implemented using the above-mentioned printer roller concentricity detection device, and the printer roller concentricity detection method includes a first test mode, a second test mode and a third test mode; The first test mode includes the following steps: a1. Place a printer roller 4 to be tested on the two rotating drive rollers 1 of each group of printer roller drive limit mechanisms, and make the corresponding rotatable support roller sleeve 2 press against the corresponding printer roller 4 to be tested. a2. Install dial indicator 3 on each dial indicator fixture, so that the measuring rod of each dial indicator 3 abuts against the corresponding roller shaft 4 of the printer to be tested. a3. The rotary drive device drives the two rotary drive rollers 1 in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of each dial indicator 3. a4. The linear telescopic drive mechanism drives the clamp mounting rod 5 to move, so as to change the measurement point of each dial indicator 3 on the roller shaft 4 of the printer to be tested along the axial direction of the clamp mounting rod 5. Each time the measurement point is changed, the measurement data result of each dial indicator 3 is read. The second testing mode includes the following steps: b1. Place a printer roller 4 to be tested on two rotating drive rollers 1 of a set of printer roller drive limit mechanisms, and make the corresponding rotatable support roller sleeve 2 press against the corresponding printer roller 4 to be tested. b2. Install dial indicator 3 on the dial indicator fixture of the corresponding printer roller 4 to be tested, so that the measuring rod of dial indicator 3 is against the corresponding printer roller 4 to be tested. b3. The rotary drive device drives the two rotary drive rollers 1 in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of the dial indicator 3. b4. Place the printer roller 4 to be tested on the two rotating drive rollers 1 of each group of printer roller drive limit mechanisms in turn, and make the corresponding rotatable support roller sleeve 2 press against the corresponding printer roller 4 to be tested, and then repeat steps b2 and b3. The third testing mode includes the following steps: c1. Place a printer roller 4 to be tested on the two rotating drive rollers 1 of each group of printer roller drive limit mechanisms, and make the corresponding rotatable support roller sleeve 2 press against the corresponding printer roller 4 to be tested. c2. Install dial indicator 3 on each dial indicator fixture, so that the measuring rod of each dial indicator 3 abuts against the corresponding roller shaft 4 of the printer to be tested. c3. The rotary drive device drives the two rotary drive rollers 1 in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of each dial indicator 3. c4. The lifting support device 300 moves up and down to change the tilt angle of the first mounting base 100. Each time the tilt angle of the first mounting base 100 is changed, the measurement data results of each dial gauge 3 are read.

[0039] It is understandable that measuring the concentricity of the printer roller 4 under test using a dial indicator 3 is existing technology, and will not be described in detail here.

[0040] It should be noted that the above embodiments only illustrate preferred embodiments of this application, and their descriptions are relatively specific and detailed, but they should not be construed as limiting this application. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of this application, such as combining different features in various embodiments, and these should all fall within the protection scope of this application.

Claims

1. A printer roller concentricity detection device, characterized in that, The printer roller concentricity detection device includes: First mounting base; Multiple sets of printer roller drive limiting mechanisms are set on the first mounting base. The printer roller drive limiting mechanism can limit the printer roller to be tested. Each set of printer roller drive limiting mechanism includes two rotating drive rollers and one rotatable support roller sleeve. The two rotating drive rollers and one rotatable support roller sleeve are parallel to each other. The arrangement direction of the two rotating drive rollers in different sets of printer roller drive limiting mechanisms is different. The rotatable support roller sleeve can move closer to or further away from the corresponding two rotating drive rollers in the same set. A rotary drive device is connected to the rotary drive roller to drive two rotary drive rollers in the same group of printer roller shaft drive limit mechanism to rotate in the same direction. A dial indicator, wherein the measuring rod of the dial indicator is used to contact the printer roller shaft under test, which is limited by the printer roller shaft drive limit mechanism.

2. The printer roller concentricity detection device according to claim 1, characterized in that, The printer roller concentricity detection device includes a clamp mounting rod, the axis of which is parallel to the axis of the rotating drive roller. Multiple sets of printer roller drive limiting mechanisms are arranged sequentially around the axis of the clamp mounting rod. A dial indicator clamp corresponding to the number and position of the multiple sets of printer roller drive limiting mechanisms is provided on the clamp mounting rod around its axis.

3. The printer roller concentricity detection device according to claim 2, characterized in that, The printer roller concentricity detection device includes a linear telescopic drive mechanism, which includes a drive unit and the clamp mounting rod. The drive unit can drive the clamp mounting rod to perform linear reciprocating motion along its axis.

4. The printer roller concentricity detection device according to claim 3, characterized in that, The linear telescopic drive mechanism is a transverse cylinder, the drive unit is the cylinder body of the transverse cylinder, and the clamp mounting rod is the piston rod of the transverse cylinder.

5. The printer roller concentricity detection device according to claim 2, characterized in that, The dial indicator fixture includes a fixed clamping plate and a movable clamping plate disposed on the fixture mounting rod. The first end of the movable clamping plate is hinged to the fixture mounting rod via a hinge shaft. A torsion spring is disposed on the hinge shaft, and the torsion spring generates an elastic force that causes the second end of the movable clamping plate to move toward the fixed clamping plate.

6. The printer roller concentricity detection device according to claim 1, characterized in that, The rotary drive device includes a power source and a drive gear connected to the power source. Each of the rotary drive rollers is coaxially connected to a driven gear. The driven gears corresponding to each of the rotary drive rollers are arranged around the drive gear, and each driven gear corresponding to each of the rotary drive rollers meshes with the drive gear.

7. The printer roller concentricity detection device according to claim 6, characterized in that, The power source is an electric motor.

8. The printer roller concentricity detection device according to claim 1, characterized in that, The first mounting base includes a first base plate and a first and a second upright plate connected to the first base plate. Each group of printer roller shaft drive limiting mechanisms includes a number of movable shafts consistent with the number of rotatable support roller sleeves. Each rotatable support roller sleeve is rotatably fitted onto a corresponding movable shaft. The first upright plate has a first elongated groove corresponding to each movable shaft, and the second upright plate has a second elongated groove corresponding to each movable shaft. The first end of each movable shaft has a first screw portion, and the other end of each movable shaft has a second screw portion. The first screw portion passes through the corresponding first elongated groove, and a first locking nut is installed on the first screw portion. The second screw portion passes through the corresponding second elongated groove, and a second locking nut is installed on the second screw portion. When the movable shaft moves along the first and second elongated grooves, the movable shaft approaches or moves away from the two corresponding rotating drive rollers in the same group.

9. The printer roller concentricity detection device according to claim 3, characterized in that, The printer roller concentricity detection device includes a second mounting base. A hinge block is provided below one end of the first mounting base. The hinge block is hinged to the second mounting base. The printer roller concentricity detection device includes a lifting support device provided on the second mounting base. The lifting support device supports the lower surface of the other end of the first mounting base. When the lifting support device moves up and down, it can keep the first mounting base in a horizontal position.

10. A method for detecting the concentricity of a printer roller, characterized in that, The printer roller concentricity detection method is implemented using the printer roller concentricity detection device as described in claim 9, and the printer roller concentricity detection method includes a first test mode, a second test mode, and a third test mode; The first test mode includes the following steps: a1. Place a printer roller shaft to be tested on the two rotating drive rollers of each group of printer roller shaft drive limit mechanisms, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft to be tested. a2. Install dial indicators on each dial indicator fixture, and make the measuring rod of each dial indicator abut against the corresponding roller shaft of the printer to be tested; a3. The rotary drive device drives the two rotary drive rollers in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of each dial indicator. a4. The linear telescopic drive mechanism drives the fixture mounting rod to move, thereby changing the measurement point of each dial indicator on the roller shaft of the printer to be tested along the axial direction of the fixture mounting rod. Each time the measurement point is changed, the measurement data result of each dial indicator is read. The second test mode includes the following steps: b1. Place a printer roller shaft to be tested on the two rotating drive rollers of a set of printer roller shaft drive limit mechanisms, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft to be tested. b2. Install a dial indicator on the dial indicator fixture of the corresponding printer roller shaft to be tested, and make the measuring rod of the dial indicator abut against the corresponding printer roller shaft to be tested. b3. The rotary drive device drives the two rotary drive rollers in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of the dial indicator. b4. Place the printer roller shaft under test on the two rotating drive rollers of each group of printer roller shaft drive limit mechanism in turn, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft under test. Then repeat steps b2 and b3. The third test mode includes the following steps: c1. Place a printer roller shaft to be tested on the two rotating drive rollers of each group of printer roller shaft drive limit mechanisms, and make the corresponding rotatable support roller sleeve press against the corresponding printer roller shaft to be tested. c2. Install dial indicators on each dial indicator fixture, and make the measuring rod of each dial indicator abut against the corresponding roller shaft of the printer to be tested; c3. The rotary drive device drives the two rotary drive rollers in the limit mechanism of each group of printer rollers to rotate in the same direction, and reads the measurement data results of each dial indicator. c4. The lifting support device moves up and down to change the tilt angle of the first mounting base. Each time the tilt angle of the first mounting base is changed, the measurement data of each dial indicator is read.

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