Ink-jet printer conduction band deviation rectifying device

Abstract

The utility model relates to an ink-jet printer conduction band deviation rectifying device which comprises a first rack side plate, a second rack side plate, a driving roller, a driven roller, a deviation rectifying driving assembly, a deviation rectifying roller and a conduction band. The first rack side plate and the second rack side plate are symmetrically arranged; the driving roller is rotationally mounted between the first rack side plate and the second rack side plate; the driven roller is rotationally mounted between the first rack side plate and the second rack side plate; the deviation rectifying driving assembly is arranged on the first rack side plate; one end of the deviation rectifying roller is hinged to the second rack side plate, and the other end is connected with the deviation rectifying driving assembly; the driving roller, the driven roller and the deviation rectifying roller are sleeved with the guide belt. One end of the deviation rectifying roller is hinged to the second rack side plate, the other end of the deviation rectifying roller is connected with the deviation rectifying driving assembly, and when the deviation rectifying driving assembly drives one end of the deviation rectifying roller to move front and back, the relative magnitude of the supporting tension force of the two ends of the deviation rectifying roller on the guide belt can be changed, so that the guide belt moves left and right, the deviation rectifying effect is achieved, and operation is convenient.

Description

Technical Field

[0001] This utility model belongs to the field of printer technology, and in particular relates to a tape guide correction device for inkjet printers. Background Technology

[0002] In a belt-type inkjet printer, the printing medium (such as fabric) is transported by a guide belt during inkjet printing, which is driven forward by a drive roller and a driven roller. However, the guide belt cannot guarantee straight-line movement during its movement; over time, it will deviate left or right, causing the printed image to also shift left or right. Currently, most belt-type inkjet printers on the market use manual belt correction, which is inconvenient, inefficient, and unable to precisely control the amount of deviation. Utility Model Content

[0003] The main objective of this invention is to provide a tape guide correction device for inkjet printers, which can effectively solve the problems in the background art.

[0004] To achieve the above objectives, this utility model provides the following technical solution:

[0005] An inkjet printer guide belt correction device, comprising

[0006] The first and second frame side plates are symmetrically arranged;

[0007] The drive roller is rotatably mounted between the first frame side plate and the second frame side plate;

[0008] The driven roller is rotatably mounted between the first frame side plate and the second frame side plate, at the same height as the driving roller;

[0009] The alignment drive assembly is mounted on the side plate of the first frame.

[0010] The correction roller is hinged at one end to the side plate of the second frame and connected to the correction drive assembly at the other end. It is driven to move back and forth by the correction drive assembly. The active roller, the driven roller and the correction roller form a "V" shape structure.

[0011] The guide belt is sleeved on the outside of the drive roller, driven roller and correction roller.

[0012] Preferably, a first movable groove is provided on the side plate of the first frame, and the end of the correction roller extends out from the first movable groove;

[0013] The correction drive component includes

[0014] A lead screw stepper motor is fixed to the outside of the side plate of the first frame;

[0015] The hinged link is connected to the side plate of the first frame via a pin in the middle. The hinged link can rotate around the pin. The bottom of the hinged link is threaded to the lead screw of the lead screw stepper motor, and the top is hinged to the end of the correction roller.

[0016] Preferably, the lead screw stepper motor includes a stepper motor and a lead screw, the lead screw is connected to the output shaft of the stepper motor via a coupling, a threaded block is threadedly connected to the lead screw, and a connecting rod is fixedly inserted through the threaded block;

[0017] The bottom of the hinged connecting rod has a first through hole, the connecting rod passes through the first through hole, the top of the hinged connecting rod has a second through hole, and the end of the straightening roller passes through the second through hole.

[0018] Preferably, a mounting groove is provided on the side plate of the first frame, a mounting plate is fixed on the mounting groove, a first linear displacement sensor is fixed on the mounting plate, and the telescopic rod of the first linear displacement sensor abuts against the side of the guide belt.

[0019] A second linear displacement sensor is provided on the outer side of the first frame side plate. One end of the second linear displacement sensor is hinged to the first frame side plate, and the other end is hinged to the end of the correction roller.

[0020] Preferably, a base is fixed on the mounting plate, and a slider is slidably mounted on the base. The slider is fixedly connected to the telescopic rod of the first linear displacement sensor.

[0021] A roller is rotatably mounted on the top of the slider, and the roller abuts against the side of the guide belt.

[0022] Preferably, a support rod is fixed to the outer side of the second frame side plate;

[0023] A second movable groove is provided on the side plate of the second frame above the support rod;

[0024] The other end of the correction roller extends out of the second moving groove and is connected to the support rod via a universal joint.

[0025] This utility model provides a tape guide correction device for an inkjet printer, which has the following beneficial effects:

[0026] 1. One end of the correction roller of this utility model is hinged to the side plate of the second frame, and the other end is connected to the correction drive assembly. When the correction drive assembly drives one end of the correction roller to move back and forth, the relative magnitude of the tension force of the two ends of the correction roller on the guide belt can be changed, thereby moving the guide belt left and right to achieve the correction effect. It is easy to operate.

[0027] 2. When the lead screw stepper motor starts, the rotation of the lead screw can drive the bottom of the hinged connecting rod to move back and forth, thereby driving the hinged connecting rod to rotate around the pin shaft. In turn, the top of the hinged connecting rod drives the straightening roller to move back and forth, thus correcting the belt deviation. Compared with traditional manual deviation correction, it saves time and effort.

[0028] 2. The first linear displacement sensor can obtain the positive and negative offset of the guide belt based on the extension length of its telescopic rod, and transmits the positive and negative offset to the PLC. The PLC controls the stepper motor to rotate in both directions based on the positive and negative offset, thereby controlling the forward and backward movement of the correction roller to correct the deviation. When the correction roller moves forward and backward, the second linear displacement sensor can obtain the position of the correction roller based on the extension length of its telescopic rod, and transmit the position to the PLC. The PLC controls the number of rotations of the stepper motor based on the PID algorithm, thereby controlling the forward and backward movement distance of the correction roller. Through the above settings, automated deviation correction can be achieved, and the offset can be precisely controlled. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the structure of the inkjet printer guide belt correction device of this utility model. Figure 1 ;

[0030] Figure 2 This is a cross-sectional view of the inkjet printer guide belt correction device of this utility model;

[0031] Figure 3 This is a schematic diagram of the connection of the moving end of the correction roller of this utility model;

[0032] Figure 4 This is a schematic diagram of the installation of the first linear displacement sensor of this utility model;

[0033] Figure 5 This is a schematic diagram of the structure of the inkjet printer guide belt correction device of this utility model. Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the connection of the hinged end of the correction roller of this utility model.

[0035] In the diagram: 1. First frame side plate; 2. Second frame side plate; 3. Driving roller; 4. Driven roller; 5. Correction drive assembly; 51. Lead screw stepper motor; 511. Stepper motor; 512. Lead screw; 513. Coupling; 52. Hinge connecting rod; 521. First through hole; 522. Second through hole; 53. Pin; 54. Threaded block; 55. Connecting rod; 6. Correction roller; 7. Guide belt; 8. Mounting plate; 9. First linear displacement sensor; 10. Second linear displacement sensor; 11. First moving groove; 12. Mounting groove; 13. Base; 14. Slider; 15. Roller; 16. Support rod; 17. Second moving groove; 18. Universal joint. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0037] The technical solution of this utility model will be clearly and completely described below with reference to the embodiments. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0038] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0039] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the stated features. In the description of this utility model, "a plurality of" means two or more, unless otherwise explicitly specified. Furthermore, the terms "installed," "connected," and "linked" should be interpreted broadly; for example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0040] Example

[0041] Reference Figure 1 , Figure 2 An inkjet printer guide belt correction device, comprising:

[0042] The first frame side plate 1 and the second frame side plate 2 are symmetrically arranged;

[0043] The drive roller 3 is rotatably mounted between the first frame side plate 1 and the second frame side plate 2;

[0044] The driven roller 4 is rotatably mounted between the first frame side plate 1 and the second frame side plate 2, at the same height as the driving roller 3;

[0045] The correction drive assembly 5 is mounted on the first frame side plate 1;

[0046] The correction roller 6 is hinged at one end to the second frame side plate 2 and connected to the correction drive assembly 5 at the other end. It is driven to move back and forth by the correction drive assembly 5. The active roller 3, the driven roller 4 and the correction roller 6 form a "V" shape structure.

[0047] The guide belt 7 is sleeved outside the drive roller 3, driven roller 4 and correction roller 6.

[0048] In this invention, the driving roller 3 and the driven roller 4 are arranged one in front of the other. The driving roller 3, the driven roller 4 and the correction roller 6 form a "V" shape structure to support and tension the guide belt 7. Under normal working conditions, the tension on the left and right sides of the guide belt 7 is relatively balanced, and the guide belt 7 will not shift left or right. However, after running for a long time, due to the influence of certain factors, when the balance at both ends is broken, the guide belt 7 will shift left or right, and under the action of friction, it will shift towards the end with less tension. At this time, it is necessary to correct the deviation of the guide belt 7.

[0049] One end of the correction roller 6 of this utility model is hinged to the side plate 2 of the second frame, and the other end is connected to the correction drive assembly 5. When the correction drive assembly 5 drives one end of the correction roller 6 to move back and forth, the relative magnitude of the tension force of the two ends of the correction roller 6 on the guide belt 7 can be changed, thereby causing the guide belt 7 to move left and right to achieve the correction effect. It is easy to operate.

[0050] The following explanation is based on specific circumstances:

[0051] In this embodiment, the driven roller 4 is in front, the driving roller 3 is behind, and the correction roller 6 is located on the side close to the driven roller 4. For ease of explanation, the end of the correction roller 6 connected to the correction drive assembly 5 is called the moving end, and the end of the correction roller 6 hinged to the second frame side plate 2 is called the hinge end. When the correction drive assembly 5 drives the moving end of the correction roller 6 to move forward, the supporting tension of the moving end of the correction roller 6 on the guide belt 7 gradually increases, while when the correction drive assembly 5 drives the moving end of the correction roller 6 to move backward, the supporting tension of the moving end of the correction roller 6 on the guide belt 7 gradually decreases.

[0052] Specifically, if the guide belt 7 deviates from the moving end of the correction roller 6 during the use of the inkjet printer, the correction drive component 5 can drive the moving end of the correction roller 6 to move forward, so that the supporting tension of the moving end of the correction roller 6 on the guide belt 7 gradually increases, and thus the supporting tension of the moving end of the correction roller 6 is greater than the supporting tension of the hinge end of the correction roller 6. At this time, during operation, the guide belt 7 will move towards the end with the smaller supporting tension, that is, towards the hinge end of the correction roller 6, to achieve the correction effect.

[0053] Similarly, if the guide belt 7 deviates from the hinge end of the correction roller 6 during use of the inkjet printer, the moving end of the correction roller 6 can be driven to move backward by the correction drive component 5. This will gradually reduce the support tension of the moving end of the correction roller 6 on the guide belt 7, making the support tension of the moving end of the correction roller 6 less than the support tension of the hinge end of the correction roller 6. During operation, the guide belt 7 will move towards the end with the smaller support tension, that is, towards the moving end of the correction roller 6, thus achieving the correction effect.

[0054] In a specific implementation plan, refer to Figure 1 , Figure 3 A specific structure of the correction drive component 5 is provided:

[0055] A first movable groove 11 is provided on the first frame side plate 1, and the end of the correction roller 6 passes through the first movable groove 11;

[0056] The correction drive component 5 includes

[0057] The lead screw stepper motor 51 is fixed on the outside of the first frame side plate 1;

[0058] The hinged connecting rod 52 is connected to the first frame side plate 1 through the pin 53 in the middle. The hinged connecting rod 52 can rotate around the pin 53. The bottom of the hinged connecting rod 52 is threaded to the lead screw of the lead screw stepper motor 51, and the top is hinged to the end of the correction roller 6.

[0059] When the lead screw stepper motor 51 starts, the rotation of the lead screw can drive the bottom of the hinged connecting rod 52 to move back and forth, thereby driving the hinged connecting rod 52 to rotate around the pin shaft 53. In turn, the top of the hinged connecting rod 52 drives the correction roller 6 to move back and forth, thus correcting the guide belt 7. Compared with traditional manual correction, it saves time and effort.

[0060] In one specific implementation, more specifically, the lead screw stepper motor 51 includes a stepper motor 511 and a lead screw 512. The lead screw 512 is connected to the output shaft of the stepper motor 511 via a coupling 513. A threaded block 54 is threadedly connected to the lead screw 512, and a connecting rod 55 is fixedly passed through the threaded block 54.

[0061] The bottom of the hinged connecting rod 52 has a first through hole 521, and the connecting rod 55 passes through the first through hole 521, so that the bottom of the hinged connecting rod 52 is hinged to the connecting rod 55. The top of the hinged connecting rod 52 has a second through hole 522, and the end of the straightening roller 6 passes through the second through hole 522, so that the top of the hinged connecting rod 52 is hinged to the straightening roller 6.

[0062] In a specific implementation plan, refer to Figure 3 The first frame side plate 1 has an installation groove 12, and an installation plate 8 is fixed on the installation groove 12. A first linear displacement sensor 9 is fixed on the installation plate 8, and the telescopic rod of the first linear displacement sensor 9 abuts against the side of the guide belt 7.

[0063] A second linear displacement sensor 10 is provided on the outer side of the first frame side plate 1. One end of the second linear displacement sensor 10 is hinged to the first frame side plate 1, and the other end is hinged to the end of the correction roller 6.

[0064] This embodiment can be controlled by a PLC system. The first linear displacement sensor 9 can obtain the positive and negative offset of the guide belt 7 based on the extension length of its telescopic rod, and transmit the positive and negative offset to the PLC. The PLC controls the stepper motor 511 to rotate forward and backward based on the positive and negative offset, thereby controlling the moving end of the correction roller 6 to move back and forth for correction. When the moving end of the correction roller 6 moves back and forth, the second linear displacement sensor 10 can obtain the position of the moving end of the correction roller 6 based on the extension length of its telescopic rod, and transmit the position to the PLC. The PLC controls the number of rotations of the stepper motor 511 based on the PID algorithm, thereby controlling the distance the moving end of the correction roller 6 moves back and forth. Through the above settings, automated correction and precise control of the offset can be achieved.

[0065] In a specific implementation plan, refer to Figure 4 A base 13 is fixed on the mounting plate 8, and a slider 14 is slidably mounted on the base 13. The slider 14 is fixedly connected to the telescopic rod of the first linear displacement sensor 9.

[0066] A roller 15 is rotatably mounted on the top of the slider 14, and the roller 15 abuts against the side of the guide belt 7.

[0067] In this embodiment, the telescopic rod of the first linear displacement sensor 9 does not directly contact the guide belt 7, but rather contacts the guide belt 7 through the roller 15. The roller 15 can rotate, which reduces friction on the guide belt 7 and prevents wear on the guide belt 7.

[0068] In a specific implementation plan, refer to Figure 5, Figure 6 A support rod 16 is fixed to the outer side of the second frame side plate 2;

[0069] A second moving groove 17 is provided on the second frame side plate 2 above the support rod 16;

[0070] The other end of the correction roller 6 extends out of the second moving groove 17 and is connected to the support rod 16 via a universal joint 18.

[0071] In this embodiment, the universal joint 18 is specifically a gas spring ball joint. The universal joint 18 flexibly connects the correction roller 6 and the support rod 16 to adapt to the angle change of the correction roller 6 when the moving end of the correction roller 6 moves back and forth.

[0072] The above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. A tape guide correction device for an inkjet printer, characterized in that: include The first and second frame side plates are symmetrically arranged; The drive roller is rotatably mounted between the first frame side plate and the second frame side plate; The driven roller is rotatably mounted between the first frame side plate and the second frame side plate, at the same height as the driving roller; The alignment drive assembly is mounted on the side plate of the first frame. The correction roller is hinged at one end to the side plate of the second frame and connected to the correction drive assembly at the other end. It is driven to move back and forth by the correction drive assembly. The active roller, the driven roller and the correction roller form a "V" shaped structure. The guide belt is sleeved on the outside of the drive roller, driven roller and correction roller.

2. The inkjet printer guide belt correction device according to claim 1, characterized in that: A first movable groove is provided on the side plate of the first frame, and the end of the correction roller extends out of the first movable groove; the correction drive assembly includes A lead screw stepper motor is fixed to the outside of the side plate of the first frame; The hinged link is connected to the side plate of the first frame via a pin in the middle. The hinged link can rotate around the pin. The bottom of the hinged link is threaded to the lead screw of the lead screw stepper motor, and the top is hinged to the end of the correction roller.

3. The inkjet printer guide belt correction device according to claim 2, characterized in that: The lead screw stepper motor includes a stepper motor and a lead screw. The lead screw is connected to the output shaft of the stepper motor via a coupling. A threaded block is threaded onto the lead screw, and a connecting rod is fixedly threaded onto the threaded block. The bottom of the hinged connecting rod has a first through hole, the connecting rod passes through the first through hole, the top of the hinged connecting rod has a second through hole, and the end of the straightening roller passes through the second through hole.

4. The inkjet printer guide belt correction device according to claim 1, characterized in that: The first frame has a mounting groove on its side plate, a mounting plate is fixed on the mounting groove, and a first linear displacement sensor is fixed on the mounting plate. The telescopic rod of the first linear displacement sensor abuts against the side of the guide belt. A second linear displacement sensor is provided on the outer side of the first frame side plate. One end of the second linear displacement sensor is hinged to the first frame side plate, and the other end is hinged to the end of the correction roller.

5. The inkjet printer guide belt correction device according to claim 4, characterized in that: A base is fixed on the mounting plate, and a slider is slidably mounted on the base. The slider is fixedly connected to the telescopic rod of the first linear displacement sensor. A roller is rotatably mounted on the top of the slider, and the roller abuts against the side of the guide belt.

6. The inkjet printer guide belt correction device according to claim 1, characterized in that: A support rod is fixed to the outer side of the second frame side plate; A second movable groove is provided on the side plate of the second frame above the support rod; The other end of the correction roller extends out of the second moving groove and is connected to the support rod via a universal joint.

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