TWI775694B - Capping system and controlling method thereof - Google Patents

Abstract

The disclosure is related to a capping system and a controlling method thereof for capping a nozzle on a sliding part. The sliding part includes a positioning groove penetrating the bottom surface thereof. The capping system includes a base, a platform, a driving element, an arm and a sensor. The platform includes a capping portion and a positioning column, and is spatially corresponding to the nozzle and the positioning groove, respectively. The arm is disposed on the base and connected to the driving element. When the driving element drives the platform to move, the arm is rotated at a rotation angle correspondingly. When the platform is in the initial position, the rotation angle of the arm is zero, and the arm is detected by the sensor. At a capping position, the positioning column penetrates the positioning groove, the capping portion seals the nozzle, and the rotation angle is at a first angle value. At an abutting position, the positioning column abuts against the sliding part, and the rotation angle is at a second angle value. By changing the rotation angle of the arm, it is allowed to determine that the positioning column and the positioning groove are misaligned or aligned with each other.

Description

Head system and control method thereof

This case is about a head system of a print head, especially a head system and its control method, which can automatically adjust the position of the head to ensure that the head device can completely seal the print head.

In recent years, the requirements for printing quality of inkjet printers have been increasing day by day. Although ink dots are getting smaller as resolution increases, inkjet printers still need to meet the demands of high-speed printing. In this case, the cleaning of the spray head is significantly more important. The main function of the cleaning mechanism (Clean System) is to clean and protect the nozzles to maintain the printing quality of the inkjet printer.

When the nozzle of the inkjet printer needs to be cleaned, the ink cart moves to the Capping Position of the ink stack according to the signal of the grating sensor. At this time, the ink stack is lifted to completely seal the nozzle of the print head, and the cleaning mechanism starts to work and A negative pressure is formed at the sealing part, the ink is drawn out, and the nozzle is flushed with ink. After rinsing, the ink stack descends, the scraper bounces up, scrapes off the remaining ink from the nozzle, and then the ink cart is reset and the cleaning is completed.

However, if the ink cart moves to an incorrect ink stack position due to various external factors during cleaning, when the ink stack is lifted, some nozzle holes may not be covered in the ink stack, resulting in the inability to completely seal the print head nozzles. Negative pressure, incomplete ink extraction, and the cleaning result at this time is a failure. On the contrary, it will cause more serious nozzle blockage.

Therefore, how to develop a head system and a control method thereof to ensure that a slider such as an ink cart can be moved to the correct head position of the head system, so that when the pallet of the head system is lifted, the nozzles on the slider can be completely sealed , and solving the problems faced by the prior art is an urgent problem to be solved in this field.

The purpose of this case is to provide a head system and its control method. By converting the displacement distance of the pallet of the head system relative to the sliding member into a corresponding angle, the head system is controlled to automatically confirm the position of the head relative to the sliding member. Furthermore, the confirmation procedure of the head position of the head system relative to the nozzle on the slider can ensure that the nozzle on the slider moves to the correct head position of the head system, so that the cover sealing part on the pallet of the head system is lifted. It can completely seal the nozzle on the sliding part. Because the head system can automatically adjust and set the position of the nozzle on the sliding part relative to the cover sealing part, the problem caused by the subjective judgment of the head position is eliminated, and the accuracy of the head operation is ensured. When the head operation is combined with the cleaning system of the printer, the automatic adjustment of the position of the head can ensure that the nozzles of the nozzles on the slide are covered by the cover sealing part of the pallet, avoiding the emptying of air into the nozzle holes, which helps To extend the life of the nozzle.

Another object of this case is to provide a head system and a control method thereof. By controlling the displacement distance of the slider, the alignment efficiency of the positioning column of the head system and the positioning groove of the slider is effectively improved, and the confirmation procedure of the head position is simplified at the same time. On the other hand, through the design of the positioning column and the positioning groove, the compensation distance can be further used to correct the position of the nozzle of the sliding piece relative to the cover sealing part of the head system, further improving the accuracy and efficiency of the head operation.

In order to achieve the aforementioned purpose, the present application provides a head system for capping the spray head, the spray head is carried on a sliding member, the sliding member slides in a first direction, the sliding member includes a positioning groove running through a bottom surface of the sliding member, and the sealing head system Includes base, stack, drive, arm, and sensor. The stack is set at The base includes a cover sealing portion and a positioning column, the cover sealing portion is spatially opposite to the spray head, and the positioning column is spatially opposite to the positioning groove. The driving part is arranged on the base, and the assembled driving platform moves in the second direction. The support arm is arranged on the base, and the first end of the support arm is connected to the driving member. When the driving member drives the pallet to move in the second direction, the driving member drives the support arm to rotate by a corresponding rotation angle. The sensor is arranged on the base and is spatially opposite to the second end of the support arm, wherein when the platform is far away from the slider and is in an initial position, the rotation angle of the support arm is zero, and the second end of the support arm touches the sensor device. The driving part drives the pallet to move toward the sliding part, and the sliding part is located at the head position relative to the pallet; the positioning column penetrates the positioning groove; The driving element drives the pallet to move toward the sliding element, and the sliding element is located in an interference position relative to the pallet, the positioning column and the positioning groove are dislocated, the top of the positioning column abuts the bottom surface of the sliding element, the cover sealing part and the nozzle are separated from each other, and the rotating The angle is a second angle value, and the second angle value is greater than zero and less than the first angle value.

In order to achieve the aforementioned purpose, the present application further provides a method for controlling a head system, comprising the steps of: (S1) providing a head system to cover and seal the spray head, the spray head is carried on a sliding member, and the sliding member slides in a first direction, The sliding member includes a positioning groove running through the bottom surface of the sliding member, and the head system includes a base, a pallet, a driving member, a support arm and a sensor, wherein the pallet is arranged on the base, and includes a cover sealing portion and a positioning column. The sealing part is relative to the spray head in space, and the positioning column is relative to the positioning groove in space; the driving part is arranged on the base, and the assembled driving platform moves in a second direction; the support arm is arranged on the base, and the support arm The first end is connected to the driving member, and when the driving member drives the pallet to move in the second direction, the driving member drives the support arm to rotate by a corresponding rotation angle; end, wherein when the pallet is far away from the slider and is in an initial position, the rotation angle of the support arm is zero, and the second end of the support arm touches the sensor; wherein the driving part drives the pallet to move toward the slider, and the slider is relatively The stack is located at the head position, the positioning column penetrates the positioning groove, the cover sealing part seals the nozzle, and the rotation angle is a first angle The driving member drives the pallet to move toward the sliding member, and the sliding member is located in an interference position relative to the pallet, the positioning column and the positioning groove are dislocated, the top of the positioning column abuts the bottom surface of the sliding member, and the cover seal portion and the spray head are separated from each other, the rotation angle is a second angle value, and the second angle value is greater than zero and less than the first angle value; (S2) the driving member receives a first control command to drive the stack to move toward the sliding member, so as to rotate the support arm The angle is increased by the first angle value or the second angle value; (S3) the driving member receives a second control command to drive the stack to leave the sliding member, so that the rotation angle of the support arm is reduced by a third angle value, wherein the third angle value is less than The first angle value is greater than or equal to the second angle value; and (S4) the sensor detects whether the second end of the support arm touches the sensor, and when the second end of the support arm touches the sensor, it is determined that the positioning post and the positioning The grooves are misaligned with each other, and when the second end of the support arm does not touch the sensor, it is determined that the positioning post is aligned with the positioning groove.

1: Printer

10a, 10b: Ink cartridge

11a, 11b: nozzle

2: Head system

20: Pallet

21a, 21b: lid sealing part

22a, 22b: Positioning post

23: Drivers

24: Arm

241: First End

242: Second End

25: Perceptron

26: Pedestal

3: Inkjet system

30: Slider

30a: Bottom surface

31a, 31b: Positioning grooves

40: Slide rail

9: Frame

θ1: first angle value

θ2: second angle value

θ3: Avoidance angle value

W1: first width

W2: Second width

D: difference distance

S1~S7: Steps

X, Y, Z: axis

FIG. 1 is a schematic diagram showing the structure of the printer including the head system according to the embodiment of the present application.

FIG. 2 is a schematic diagram showing the structure of the head system and its corresponding printer nozzle from the top view of the embodiment of the present application.

FIG. 3 is a schematic diagram showing the structure of the head system and its corresponding printer nozzle in the embodiment of the present application from a lower perspective.

FIG. 4 is a flow chart showing the control method of the head system according to the embodiment of the present application.

FIG. 5 is a side view showing the operation of the head system of the embodiment of the present application in the initial position.

Fig. 6 shows the corresponding relationship between the head system in Fig. 5 and the nozzle of the slider when the head system is operated at the initial position.

FIG. 7 shows another corresponding relationship between the head system in FIG. 5 and the nozzle of the slider when the head system is operated at the initial position.

FIG. 8 is a side view showing the head system of the embodiment of the present application when it is operated at the head position.

Fig. 9 shows the corresponding relationship between the head system in Fig. 8 and the nozzle of the slider when the head system is operated at the head position.

FIG. 10 is a side view showing the head system of the embodiment of the present invention when it is operating in the interference position.

FIG. 11 shows the corresponding relationship between the head system and the nozzle of the slider when the head system is operated in the interference position in FIG. 10 .

Fig. 12 shows the corresponding relationship between the head system of the embodiment of the present application and the nozzle after the head position is reset to a third angle value.

FIG. 13 shows a corresponding relationship between the positioning column of the head system and the positioning groove of the slider according to the embodiment of the present invention.

FIG. 14 shows another corresponding relationship between the positioning column of the head system and the positioning groove of the slider according to the embodiment of the present invention.

FIG. 15 shows an exemplary corresponding relationship of the positioning column penetrating the positioning groove of the slider of the head system according to the embodiment of the present invention.

FIG. 16 shows the corresponding relationship between the positioning groove and the positioning column after the sliding member moves a compensation distance in FIG. 15 .

FIG. 17 shows a second exemplary correspondence between the positioning grooves of the locating column passing through the sliding member of the head system according to the embodiment of the present invention.

FIG. 18 shows the corresponding relationship between the positioning grooves and the positioning posts after the slider moves a compensation distance in FIG. 17 .

FIG. 19 shows a third exemplary corresponding relationship of the positioning column penetrating the positioning groove of the sliding member of the head system according to the embodiment of the present invention.

FIG. 20 shows the corresponding relationship between the positioning grooves and the positioning posts after the slider moves a compensation distance in FIG. 19 .

Some typical embodiments embodying the features and advantages of the present case will be described in detail in the description of the latter paragraph. It should be understood that this case can have various changes in different aspects, all of which do not depart from the scope of this case, and the descriptions and drawings therein are essentially for illustration purposes, rather than for limiting this case. For example, if the following content of the present disclosure describes that a first feature is disposed on or above a second feature, it means that it includes an embodiment in which the first feature and the second feature are in direct contact, Also included are embodiments in which additional features may be placed between the first and second features, so that the first and second features may not be in direct contact. Additionally, repeated reference symbols and/or labels may be used in different embodiments of the present disclosure. These repetitions are for the purpose of simplicity and clarity, and are not intended to limit the relationships between the various embodiments and/or the appearance structures. Furthermore, for convenience in describing the relationship of one component or feature to another (plural) component or (plural) feature in the drawings, spatially relative terms such as "under", "under", "Lower", "upper", "upper" and similar terms, and the like. In addition to the orientation depicted in the figures, spatially relative terms are used to encompass different orientations of the device in use or operation. The device may also be otherwise oriented (eg, rotated 90 degrees or at other orientations) and the description of the spatially relative terms used interpreted accordingly. Also, when an element is referred to as being "connected" or "coupled to" another element, it can be directly connected or coupled to the other element or intervening elements may be present. Notwithstanding that the numerical ranges and parameters of the broad scope of the disclosure are approximations, the numerical values are set forth as precisely as possible in the specific examples. Additionally, it is to be understood that although terms such as "first," "second," "third," etc. may be used in the scope of the claim to describe various components, these groups Components should not be limited by these terms, and these components correspondingly described in the embodiments are represented by different component symbols. These terms are used to distinguish different components. For example, a first component could be termed a second component, and similarly, a second component could be termed a first component without departing from the scope of the embodiments. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items. Except in operating/working examples, or unless expressly stated otherwise, all numerical ranges, amounts, values, and percentages disclosed herein (eg, those percentages for angles, time durations, temperatures, operating conditions, amount ratios, and the like) etc.) should be understood to be modified by the terms "about" or "substantially" in all examples. Accordingly, unless indicated to the contrary, the numerical parameters set forth in the present disclosure and the appended claims are approximations that may vary as desired. For example, each numerical parameter should be construed in light of at least the number of significant digits stated and by applying ordinary rounding principles. A range may be expressed herein as from one endpoint to the other or between the two endpoints. All ranges disclosed herein include endpoints unless otherwise specified.

FIG. 1 is a schematic diagram showing the structure of the printer including the head system according to the embodiment of the present application. FIG. 2 is a schematic diagram showing the structure of the head system and its corresponding printer nozzle from the top view of the embodiment of the present application. FIG. 3 is a schematic diagram showing the structure of the head system and its corresponding printer nozzle in the embodiment of the present application from a lower perspective. FIG. 4 is a flow chart showing the control method of the head system according to the embodiment of the present application. In this embodiment, the head sealing system 2 is applied to, for example, the ink jet system 3 of the printer 1 , for sealing at least one of the jet heads 11 a and 11 b of the ink jet system 3 to perform the cleaning process. It should be emphasized that the head system 2 of the present case is not limited to the ink jet system 3 of the printer 1, and the nozzles that can be capped by the head system 2 of the present case are all applicable to the technology of the present case.

First, as shown in step S1 , the head system 2 of the present application is, for example, constructed on the frame 9 of the printer 1 to correspond to at least one nozzle 11 a and 11 b on the inkjet system 3 . In this embodiment, at least one of the nozzles 11 a and 11 b is, for example, the printing heads of the ink cartridges 10 a and 10 b , and is carried on a sliding member 30 . Slider 30 For example, it is an ink carriage seat, and the ink carriage seat is slidably arranged on a slide rail 40 . The sliding member 30 can slide in a first direction such as the X-axis direction. The at least one spray head 11a, 11b includes, for example, a plurality of spray heads 11a, 11b arranged side by side along the X-axis direction, and exposed on the bottom surface 30a of the sliding member 30. In this embodiment, the sliding member 30 includes at least one positioning groove 31 a, 31 b that penetrates through the bottom surface 30 a of the sliding member 30 . For example, at least one positioning groove 31a, 31b is disposed between the plurality of spray heads 11a, 11b, and the plurality of positioning grooves 31a, 31b are arranged along the Y axis, for example. In this embodiment, the head system 2 includes a base 26 , a pallet 20 , a driving member 23 , an arm 24 and a sensor 25 . The stacking platform 20 is, for example, an ink stack, which is arranged on the base 26 and includes at least one cover sealing portion 21a, 21b and at least one positioning column 22a, 22b. The at least one cover sealing portion 21a, 21b is spatially opposite to at least one For a shower head 11a, 11b, at least one positioning column 22a, 22b is spatially relative to at least one positioning groove 31a, 31b. For example, the at least one positioning post 22a, 22b is arranged along the Y axis, and the height of the at least one positioning post 22a, 22b on the pallet 20 is higher than the height of the at least one capping portion 21a, 21b on the pallet 20. It should be noted that the number and corresponding arrangement positions of at least one nozzle 11a, 11b, at least one cover portion 21a, 21b, at least one positioning post 22a, 22b, and at least one positioning groove 31a, 31b can be adjusted according to actual application requirements. In the following description, the corresponding relationship between the nozzles 11b, the cover parts 21b, the positioning posts 22a, and the positioning grooves 31a is mainly used to illustrate the corresponding relationship with each other. The number and the corresponding arrangement relationship of the positioning posts 22a, 22b and one less positioning groove 31a, 31b will be described first.

In the present embodiment, the driving member 23 is, for example, a stepper motor, which is disposed on the side of the base 26 and is connected to the platform 20 through a gear set (not shown), so as to assemble the driving platform 20 on the Z axis, for example. move in a second direction. The support arm 24 is disposed on the other side of the base 26, and a first end 241 of the support arm 24 is connected to the driving member 23. When the driving member 23 drives the pallet 20 to move in the second direction (Z-axis direction), the driving The member 23 also drives the support arm 24 to rotate by a corresponding rotation angle. For example, the first end 241 of the support arm 24 can be directly connected to the rotating shaft of the driving member 23 or connected through a gear set (not shown), which is not limited in this case. in addition, In this embodiment, the sensor 25 is disposed on the side of the base 26 and is spatially opposite to a second end 242 of the support arm 24 .

In this embodiment, when the driving member 23 of the head system 2 drives the nozzles 11a and 11b of the platform 20 corresponding to the sliding member 30 to move in the second direction (Z-axis direction), the head system 2 can at least perform the initial position operation, Head position operation and interference position operation, etc. FIG. 5 is a side view showing the operation of the head system of the embodiment of the present application in the initial position. Fig. 6 shows the corresponding relationship between the head system in Fig. 5 and the nozzle of the slider when the head system is operated at the initial position. FIG. 7 shows another corresponding relationship between the head system in FIG. 5 and the nozzle of the slider when the head system is operated at the initial position. FIG. 8 is a side view showing the head system of the embodiment of the present application when it is operated at the head position. Fig. 9 shows the corresponding relationship between the head system in Fig. 8 and the nozzle of the slider when the head system is operated at the head position. FIG. 10 is a side view showing the head system of the embodiment of the present invention when it is operating in the interference position. FIG. 11 shows the corresponding relationship between the head system and the nozzle of the slider when the head system is operated in the interference position in FIG. 10 . Fig. 12 shows the corresponding relationship between the head system of the embodiment of the present application and the nozzle after the head position is reset to a third angle value. Refer to Figures 1 to 12. In this embodiment, as shown in FIG. 5 , when the platform 20 is away from the slider 30 and is at an initial position, the rotation angle of the support arm 24 is zero, and the second end 242 of the support arm 24 is located at the sensor 25 . In the touch area of , the sensor 25 can be touched. When the pallet 20 is away from the slider 30 and is at the initial position, the positioning posts 22a on the pallet 20 of the head system 2 can be aligned with the corresponding positioning grooves 31a on the slider 30, for example, as shown in FIG. 6 . At this time, the driving member 23 is allowed to drive the pallet 20 to move in the second direction (Z-axis direction), and the positioning posts 22a are allowed to penetrate the corresponding positioning grooves 31a to further complete the head position operation for ink suction cleaning, As shown in Figures 8 and 9. Alternatively, when the pallet 20 is away from the slider 30 and is at the initial position, the positioning posts 22a on the pallet 20 of the head system 2 can be arranged in a dislocation arrangement with the corresponding positioning grooves 31a on the slider 30, as shown in FIG. 7 Show. At this time, when the driving member 23 drives the pallet 20 to move in the second direction (Z-axis direction), the positioning posts 22a cannot penetrate the corresponding positioning grooves 31a, The positioning post 22a is stopped by the interference of the bottom surface 30a of the sliding member 30, and further realizes an interference position operation, as shown in FIG. 10 and FIG. 11 .

Next, as shown in step S2, when the driving member 23 receives a first control command to drive the platform 20 to move toward the sliding member 30 along the second direction (Z-axis direction), the positioning posts 22a are aligned with the corresponding positioning grooves 31a The misalignment or misalignment will affect the result of the pallet 20 moving toward the slider 30 . In this embodiment, when the driving member 23 drives the platform 20 to move toward the sliding member 30, and the positioning column 22a and the corresponding positioning groove 31a are aligned with each other, that is, the sliding member 30 is located at a head relative to the platform 20. position, at least one positioning post 22a can penetrate through at least one positioning groove 31a, and at least one cover sealing portion 21b seals at least one spray head 11b. At this time, the rotation angle of the support arm 24 is a first angle value θ1, such as 60°, as shown in FIG. 8 . In this embodiment, when the driving member 23 drives the platform 20 to move toward the sliding member 30, and the positioning posts 22a and the corresponding positioning grooves 31a are arranged in dislocation, that is, the sliding member 30 is located at an interference position relative to the platform 20. , the top end of at least one positioning post 22 a will abut against the bottom surface 30 a of the sliding member 30 . At this time, the at least one capping portion 21b and the at least one spray head 11b are separated from each other, and the rotation angle of the support arm 24 is a second angle θ2, such as 35°, as shown in FIG. 10 . In this embodiment, the second angle value θ2 is greater than zero and smaller than the first angle value θ1. In other words, when the driving member 23 receives the first control command and drives the stacker 20 to move toward the sliding member 30 in the second direction (Z-axis direction), the rotation angle of the support arm 24 is increased by the first angle value θ1 or the second angle value theta2. In addition, before step S2 is executed, a preprocessing step is further included, so that the driving member 23 drives the platform 20 away from the sliding member 30 , the platform 20 is reset to the initial position, and the rotation angle of the support arm 24 is zero. Of course, this case is not limited to this.

Then, as shown in step S3, the driving member 23 receives a second control command to drive the platform 20 away from the sliding member 30, so as to reduce the rotation angle of the support arm 24 by a third angle value, eg, 45°. The third angle value is, for example, smaller than the first angle value θ1 (eg, 60°) and greater than or equal to the second angle value θ2 (eg, 35°). If the slider 30 is at the interference position with respect to the pallet 20 and the operation of step S3 is performed, the support arm The rotation angle of 24 will reset to its original position, as shown in Figure 5. At this time, the second end 242 of the support arm 24 falls within the sensing area of the sensor 25 , so the sensor 25 can be touched. Conversely, if the slider 30 is positioned at the head position relative to the pallet 20 and the operation of step S3 is performed, the rotation angle of the support arm 24 will be reset to an avoidance angle value θ3 (eg 15°), as shown in FIG. 12 . At this time, the second end 242 of the support arm 24 does not fall within the sensing area of the sensor 25 , that is, the second end 242 of the support arm 24 will not touch the sensor 25 .

Therefore, in step S4, the sensor 25 detects whether the second end 242 of the support arm 24 touches the sensor 25 to determine that the positioning column 22a of the head system 2 and the positioning groove 31a corresponding to the sliding member 30 are displaced from each other (as shown in Fig. 7), or the positioning column 22a of the head system 2 is aligned with the corresponding positioning groove 31a on the slider 30 (as shown in Fig. 6). In this embodiment, if it is confirmed that the positioning column 22a of the head system 2 is aligned with the corresponding positioning groove 31a on the sliding member 30, the position of the sliding member 30 in the first direction (X-axis direction) can be recorded, so that the position of the sliding member 30 can be recorded. The header position is provided as a reference for subsequent header jobs. Of course, this case is not limited to this. Furthermore, the positioning posts 22a and the corresponding positioning grooves 31a are aligned with each other, that is, it is ensured that at least one nozzle 11a, 11b on the slider 30 moves to the correct head position of the head system 2, so that the pallet of the head system 2 is moved to the correct position of the head system 2. When the cover sealing parts 21a and 21b on the 20 are lifted up, they can completely seal the nozzles 11a and 11b on the sliding part 30, so as to eliminate the problem of subjective judgment of the position of the sealing head, ensure the accuracy of the sealing head operation, and ensure the printing head on the sliding part 30. The nozzles 11a and 11b are both covered by the cover sealing parts 21a and 21b of the pallet 20, which prevents evacuated air from entering the nozzle holes and helps prolong the service life of the nozzles 11a and 11b.

On the other hand, if it is determined in step S4 that the at least one positioning post 22a and the at least one positioning groove 31a are displaced from each other, the sliding member 30 can be controlled to move a displacement distance, as shown in step S5, to further execute the positioning post 22a Alignment with the corresponding positioning groove 31a. Fig. 13 shows a corresponding relationship between the positioning column of the head system and the positioning groove of the slider according to the embodiment of the present invention. FIG. 14 shows another corresponding relationship between the positioning column of the head system and the positioning groove of the slider according to the embodiment of the present invention. For the aid of positioning the post 22a and the corresponding The positioning groove 31a completes the positioning operation. In this embodiment, the positioning column 22a has a T-shaped horizontal cross section, which provides sufficient structural strength to avoid deformation when the top of the positioning column 22a interferes with the sliding member 30 . In addition, the top end of the positioning post 22a may have a chamfered structure, for example. Of course, this case is not limited to this. It should be noted that, in this embodiment, at least one positioning groove 31a has a first width W1 in the first direction (X-axis direction), and at least one positioning post 22a has a first width W1 in the first direction (X-axis direction) A second width W2, the first width W1 is greater than the second width W2, and a difference distance D is formed, such as 0.5 mm, and the displacement distance is less than or equal to the difference distance D, so that the sliding member 30 can be prevented from missing the positioning column due to the excessive displacement distance 22a is aligned with the positioning groove 31a. In other words, when the head system 2 confirms the position of the head, by controlling the displacement distance of the sliding member 30 and repeating steps S2 and S3, the alignment operation of the positioning post 22a and the corresponding positioning groove 31a can be realized.

In this embodiment, after the alignment operation of the positioning post 22a and the corresponding positioning groove 31a is realized, the control method further includes step S6, in which the sliding member 30 is controlled to move a compensation distance, wherein the compensation distance is the difference of the difference distance D. quarter. FIG. 15 shows a first exemplary correspondence between the positioning grooves of the locating column passing through the sliding member of the head system according to the embodiment of the present invention. FIG. 16 shows the corresponding relationship between the positioning groove and the positioning column after the sliding member moves a compensation distance in FIG. 15 . In this embodiment, when the positioning post 22a penetrates through the center of the corresponding positioning groove 31a, the positioning post 22a maintains a distance of, for example, about D from both sides of the corresponding positioning groove 31a in the first direction (X-axis direction). /2, as shown in Figure 15. After the compensation operation in step S6 is performed, the sliding member 30 recovers the compensation distance against the first direction (reverse X-axis direction) to D/4, then the positioning post 22a is in the first direction (X-axis direction) with the corresponding positioning groove 31a The distances between the two sides of the slide 30 are kept at a distance of D/4 and 3D/4, respectively, so as to ensure that the nozzles of the upper spray heads 11 a of the sliding 30 pieces can be covered by the cover sealing portion 21 a of the pallet 20 .

FIG. 17 shows a second exemplary correspondence between the positioning grooves of the locating column passing through the sliding member of the head system according to the embodiment of the present invention. Fig. 18 shows after the slider moves a compensation distance in Fig. 17 The corresponding relationship between the positioning groove and the positioning column. In this embodiment, when the positioning post 22a penetrates along the right side of the corresponding positioning groove 31a, the positioning post 22a maintains, for example, a distance of about D from the left side of the corresponding positioning groove 31a in the first direction (X-axis direction). , as shown in Figure 17. After performing the compensation operation in step S6, the compensation distance of the sliding member 30 along the first direction (X-axis direction) is D/4, then the positioning post 22a is in the first direction (X-axis direction) with the corresponding positioning groove 31a. For example, the distances between the two sides are kept at D/2 and D/2, respectively, so as to ensure that the nozzles of the upper spray heads 11 a of the sliding 30 pieces can be covered by the cover sealing portion 21 a of the pallet 20 .

FIG. 19 shows a third exemplary corresponding relationship of the positioning column penetrating the positioning groove of the sliding member of the head system according to the embodiment of the present invention. FIG. 20 shows the corresponding relationship between the positioning grooves and the positioning posts after the slider moves a compensation distance in FIG. 19 . In this embodiment, when the positioning post 22a penetrates along the left side of the corresponding positioning groove 31a, the positioning post 22a maintains, for example, a distance of about D from the right side of the corresponding positioning groove 31a in the first direction (X-axis direction). , as shown in Figure 19. After the compensation operation in step S6 is performed, the sliding member 30 recovers the compensation distance against the first direction (reverse X-axis direction) to D/4, then the positioning post 22a is in the first direction (X-axis direction) with the corresponding positioning groove 31a The distances between the two sides of the slide 30 are kept at a distance of 3D/4 and D/4, respectively, so as to ensure that the nozzles of the upper spray head 11a of the sliding 30 pieces can be covered by the cover sealing portion 21a of the pallet 20 . As can be seen from the above, through the compensation operation in step S6, the distance between the positioning column 22a and the two sides of the corresponding positioning groove 31a can be controlled between D/4 and 3D/4, and the sliding member 30 can be further corrected by using the compensation distance. The position of the nozzle 11a relative to the cover sealing portion 21a of the head system 2 further improves the accuracy and efficiency of the head operation. Of course, in other embodiments, step S6 may be omitted, and the present case is not limited thereto.

In this embodiment, after the alignment operation of the positioning post 22a and the corresponding positioning groove 31a is realized, the control method further includes step S7 recording the position of the sliding member 30 in the first direction (X-axis direction), and updating the sliding member 30 The position of the head relative to the pallet 20 is provided to provide the position of the head as a reference for subsequent head operations. Of course, this case is not limited to this.

To sum up, this case provides a head system and its control method. By converting the displacement distance of the pallet of the head system relative to the sliding member into a corresponding angle, the head system is controlled to automatically confirm the position of the head relative to the sliding member. Furthermore, the confirmation procedure of the head position of the head system relative to the nozzle on the slider can ensure that the nozzle on the slider moves to the correct head position of the head system, so that the cover sealing part on the pallet of the head system is lifted. It can completely seal the nozzle on the sliding part. Because the head system can automatically adjust and set the position of the nozzle on the sliding part relative to the cover sealing part, the problem caused by the subjective judgment of the head position is eliminated, and the accuracy of the head operation is ensured. When the head operation is combined with the cleaning system of the printer, the automatic adjustment of the position of the head can ensure that the nozzles of the nozzles on the slide are covered by the cover sealing part of the pallet, avoiding the emptying of air into the nozzle holes, which helps To extend the life of the nozzle. Furthermore, in this case, by controlling the displacement distance of the sliding member, the alignment efficiency of the positioning column of the head system and the positioning groove of the sliding member is effectively improved, and the confirmation procedure of the position of the head is simplified at the same time. On the other hand, through the design of the positioning column and the positioning groove, the compensation distance can be further used to correct the position of the nozzle of the sliding member relative to the cover sealing portion of the head system, further improving the accuracy and efficiency of the head operation.

This case can be modified by a person who is familiar with this technology, and all kinds of modifications can be made without departing from the protection of the scope of the patent application attached.

1: Printer

10a, 10b: Ink cartridge

2: Head system

20: Pallet

21a, 21b: lid sealing part

22a, 22b: Positioning post

23: Drivers

24: Arm

241: First End

242: Second End

25: Perceptron

26: Pedestal

3: Inkjet system

30: Slider

40: Slide rail

X, Y, Z: axis

Claims (12)

A head sealing system for covering at least one spray head, the at least one spray head is carried on a sliding member, the sliding member slides in a first direction, the sliding member includes at least one positioning groove penetrating a bottom surface of the sliding member , the head system includes: a base; a pallet, which is arranged on the base and includes at least one cover and at least one positioning column, and the at least one cover is spatially relative to the at least one spray head , the at least one positioning post is spatially relative to the at least one positioning groove; a driving member is arranged on the base, and is assembled to drive the stack to move in a second direction; an arm is arranged on the base a seat, and a first end of the support arm is connected to the drive member, when the drive member drives the stack to move in the second direction, the drive member drives the support arm to rotate by a corresponding rotation angle; and a sensor , arranged on the base, relative to a second end of the support arm in space, wherein when the platform is away from the slider and is located at an initial position, the rotation angle of the support arm is zero, and the support The second end of the arm triggers the sensor; wherein the driving element drives the pallet to move toward the sliding element, and the sliding element is located at a head position relative to the pallet, and the at least one positioning post penetrates through the at least one positioning element a groove, the at least one cover sealing part seals the at least one spray head, and the rotation angle is a first angle value; or wherein the driving member drives the platform to move toward the sliding member, and the sliding member is opposite to the stacking platform In an interference position, the at least one positioning post and the at least one positioning groove are misaligned, the top of the at least one positioning post abuts against the bottom surface of the sliding member, the at least one cover sealing portion and the at least one spray head are separated from each other, the The rotation angle is a second angle value, and the second angle value is greater than zero and less than the first angle value. The head system according to claim 1, wherein the driving member is a step motor, the print head is a printing head, the sliding member is an ink carriage, the stacking platform is an ink stack, and the sliding member is slidably disposed on the A slide rail is driven to slide in the first direction. The head system of claim 1, wherein the at least one positioning post has a T-shaped horizontal cross section, and the top of the at least one positioning post has a chamfered structure. The head system of claim 1, wherein the at least one positioning groove has a first width in the first direction, the at least one positioning post has a second width in the first direction, and the first The width is greater than the second width and forms a difference distance, wherein when the sliding member is located at the interference position relative to the pallet, the sliding member moves a displacement distance to execute the at least one positioning groove and the at least one positioning post The alignment is performed to confirm that the sliding member is located at the head position relative to the pallet, wherein the displacement distance is equal to or less than the difference distance. The head system of claim 1, wherein a height of the at least one positioning post on the pallet is higher than a height of the at least one capping portion on the pallet. A control method for a head system, comprising the steps of: (S1) providing a head system for capping at least one spray head, the at least one spray head is carried on a sliding member, the sliding member slides in a first direction, the The slider includes at least one positioning groove running through a bottom surface of the slider, the head system includes a base, a pallet, a drive, an arm and a sensor, wherein the pallet is arranged on the base and at least one cover sealing portion and at least one positioning column, the at least one cover sealing portion is spatially relative to the at least one spray head, and the at least one positioning column is spatially relative to the at least one positioning groove; the drive The supporting arm is set on the base, and a first end of the supporting arm is connected to the driving member, and is driven by the driving member When the pallet moves in the second direction, the driving member drives the supporting arm pair Should be rotated by a rotation angle; the sensor is arranged on the base, relative to a second end of the support arm in space, wherein when the stack is away from the slider and is in an initial position, the support arm The rotation angle is zero, and the second end of the support arm touches the sensor; wherein the driving member drives the stacker to move toward the sliding member, and the sliding member is located at a head position relative to the stacker, the at least A positioning column penetrates the at least one positioning groove, the at least one cover sealing portion seals the at least one spray head, and the rotation angle is a first angle value; or wherein the driving member drives the platform to move toward the sliding member, and The sliding member is located at an interference position relative to the platform, the at least one positioning post and the at least one positioning groove are misaligned, the top of the at least one positioning post abuts against the bottom surface of the sliding member, and the at least one cover sealing portion is in contact with the bottom surface of the sliding member. The at least one spray head is separated from each other, the rotation angle is a second angle value, and the second angle value is greater than zero and less than the first angle value; (S2) the driving member receives a first control command to drive the stack to move toward the sliding member, so that the rotation angle of the support arm is increased by the first angle value or the second angle value; (S3) the driving member receives a second control command to drive the pallet away from the sliding member, so that the The rotation angle of the support arm is reduced by a third angle value, wherein the third angle value is smaller than the first angle value and greater than or equal to the second angle value; and (S4) the sensor detects the angle of the support arm Whether the second end touches the sensor, wherein when the second end of the support arm touches the sensor, it is determined that the at least one positioning post and the at least one positioning groove are misaligned with each other, wherein the second end of the support arm is not When the sensor is triggered, it is determined that the at least one positioning post is aligned with the at least one positioning groove. The control method according to claim 6, wherein in the step (S4), if it is determined that the at least one positioning post and the at least one positioning groove are misaligned with each other, the control method further comprises the step (S5) that the sliding member moves a displacement distance, wherein the at least one positioning groove has a first width in the first direction, the to At least one positioning post has a second width in the first direction, the first width is greater than the second width, and a difference distance is formed, and the displacement distance is less than or equal to the difference distance; and repeat the steps ( S2) and this step (S3). The control method according to claim 7, wherein in the step (S4), if it is determined that the at least one positioning post is aligned with the at least one positioning groove, the control method further comprises the step (S6) of the sliding member moving a compensation distance, where the compensation distance is a quarter of the difference distance. The control method according to claim 6, wherein in the step (S4), if it is determined that the at least one positioning post is aligned with the at least one positioning groove, the control method further comprises the step (S7) of recording the sliding member in the The position in the first direction is updated, and the position of the head of the slider relative to the pallet is updated. The control method as claimed in claim 6, wherein the step (S2) further comprises a preprocessing step (S2') the driving member drives the pallet away from the sliding member, the pallet is reset to the initial position, and the support arm The rotation angle of is zero. The control method according to claim 6, wherein the driving member is a step motor, the print head is a printing head, the sliding member is an ink carriage, the stacking platform is an ink stack, and the sliding member is slidably disposed on a The slide rail is driven to slide in the first direction. The control method of claim 6, wherein the at least one positioning column has a T-shaped horizontal cross section, wherein the top of the at least one positioning column has a chamfered structure, and wherein the at least one positioning column is on the pallet The height is higher than the height of the at least one cover sealing portion on the pallet.

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