A new type of ink-jet printer nozzle adjustable device

Abstract

This utility model relates to a novel adjustable printhead device for an inkjet printer, comprising a printhead frame and a printhead body. The printhead frame includes a frame, connecting arms, a horizontal profile, a vertical seat, and a printhead holder. The frame is located above the horizontal profile and includes two vertical profiles. Two connecting arms are fixedly connected to both ends of the horizontal profile and slidably connected to the two vertical profiles. The frame is provided with a first drive mechanism for driving the connecting arms to move back and forth along the vertical profiles. The vertical seat is slidably connected to the horizontal profile, and the connecting arms are provided with a second drive mechanism for driving the vertical seat to move left and right along the horizontal profile. The printhead holder is slidably connected to the vertical seat, and the vertical seat is provided with a third drive mechanism for driving the printhead holder to move up and down. The printhead body is mounted on the printhead holder. This utility model significantly improves the adaptability of the printhead to packaging materials of different shapes, sizes, and conveying positions.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printer technology, and in particular to a novel adjustable inkjet printer nozzle device. Background Technology

[0002] An inkjet printer is an industrial device that uses software control to print letters, numbers, Chinese characters, and icons onto product surfaces in a non-contact manner. It is widely used in food, beverage, building materials, wire and cable, pharmaceutical, chemical, and electronics industries. Its core working principle involves placing the printhead above the packaging transport mechanism. As the packaging moves continuously with the transport mechanism, the ink sprayed from the printhead adheres to the surface of the packaging, thus completing the coding operation. Existing inkjet printer printheads are typically mounted on printhead brackets or similar support devices for support and fixation, and adjustments are mostly manual. This makes rapid response difficult in complex production scenarios (such as mixed production lines with multiple batches and specifications of products). Furthermore, manual adjustment is prone to printhead position deviations due to human error, thus affecting coding accuracy and consistency. Utility Model Content

[0003] This invention proposes a novel automatic adjustment device for the printhead position of an inkjet printer, which solves the aforementioned problems existing in the use of existing technologies.

[0004] The technical solution of this utility model is implemented as follows: A novel adjustable inkjet printer nozzle device includes a nozzle frame and a nozzle body. The nozzle frame includes a frame, connecting arms, a horizontal profile, a vertical seat, and a nozzle holder. The frame is located above the horizontal profile and includes two parallel vertical profiles. The length of the vertical profiles extends forward and backward, and the length of the horizontal profiles extends left and right. Two connecting arms are provided and fixedly connected to both ends of the horizontal profile. The two connecting arms are also slidably connected to the two vertical profiles. The frame is provided with a first driving mechanism for driving the connecting arms to move forward and backward along the vertical profiles. The vertical seat is slidably connected to the horizontal profile. The connecting arms are provided with a second driving mechanism for driving the vertical seat to move left and right along the horizontal profile. The nozzle holder is slidably connected to the vertical seat. The vertical seat is provided with a third driving mechanism for driving the nozzle holder to move up and down. The nozzle body is disposed on the nozzle holder.

[0005] Preferably, a rotating shaft is rotatably connected to the nozzle holder, the nozzle body is fixedly connected to the rotating shaft, and a fourth driving mechanism for driving the rotating shaft to rotate is provided on the nozzle holder.

[0006] Preferably, the fourth drive mechanism includes a brake servo motor, an active synchronous pulley, a passive synchronous pulley, and a synchronous belt. The brake servo motor is fixed on the nozzle base, the active synchronous pulley is fixedly connected to the output shaft of the brake servo motor, the passive synchronous pulley is fixedly connected to the rotating shaft, and the synchronous belt is fitted onto the active synchronous pulley and the passive synchronous pulley.

[0007] Preferably, a shaft tube clamp is fixedly connected to the rear side of the nozzle body. The shaft tube clamp has a connection port for the rotating shaft to pass through and a clamping gap extending from the connection port out of the shaft tube clamp. The shaft tube clamp is provided with a locking screw in the clamping gap.

[0008] Preferably, the connecting arm slidingly connected to the longitudinal profile, the vertical seat slidingly connected to the transverse profile, and the nozzle seat slidingly connected to the vertical seat all adopt a guide rail slider structure for sliding connection.

[0009] Preferably, the first drive mechanism, the second drive mechanism, and the third drive mechanism all use a motor, a lead screw connected to the output shaft of the motor, and a nut seat threaded onto the lead screw for driving operations.

[0010] In summary, the beneficial effects of this utility model are as follows:

[0011] 1. This utility model, through a multi-stage linkage structure consisting of a frame, connecting arm, horizontal profile, vertical seat, and printhead seat, combined with first, second, and third drive mechanisms, achieves automatic adjustment of the printhead body in three directions: front-back, left-right, and up-down. This significantly improves the printhead's adaptability to packaging materials of different shapes, sizes, and conveying positions, making it particularly suitable for mixed-line production of multiple batches and specifications of products, thus improving coding efficiency and consistency.

[0012] 2. This utility model adds a rotating shaft and a fourth drive mechanism to the printhead holder, allowing the printhead body to adjust its angle as it rotates along the shaft. Traditional printhead holders lack dynamic control over the printhead's posture, resulting in poor ink adhesion when dealing with curved, sloping, or textured packaging materials. With this solution, the tilt angle of the printhead body can be adjusted in real time according to actual needs, ensuring uniform ink coverage of the target surface, effectively solving problems such as blurry, offset, or even failed coding, and significantly improving coding accuracy and product quality. Attached Figure Description

[0013] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, 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 utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0015] Figure 2 for Figure 1 A structural diagram from another angle;

[0016] Figure 3 This is a schematic diagram showing the specific structure of the nozzle body located on the nozzle seat in this utility model;

[0017] Figure 4 This is a schematic diagram of the structure of the nozzle body and the rotating shaft in this utility model.

[0018] In the diagram: 1. Nozzle body; 11. Shaft tube clamp; 111. Connecting port; 112. Clamping gap; 12. Locking screw; 2. Frame; 21. Longitudinal profile; 22. Connecting profile; 23. Connecting plate; 3. Connecting arm; 4. Transverse profile; 5. Vertical seat; 6. Nozzle seat; 61. Rotary shaft mounting plate; 71. Rotary shaft; 72. Brake servo motor; 73. Active synchronous pulley; 74. Passive synchronous pulley; 75. Synchronous belt; 81. First guide rail; 82. First slider; 83. Second guide rail; 84. Second slider; 85. Third guide rail; 86. Third slider; 91. First motor; 92. First lead screw; 93. First nut seat; 94. Second motor; 95. Second lead screw; 96. Second nut seat; 97. Third motor; 98. Third lead screw; 99. Third nut seat. Detailed Implementation

[0019] The following will refer to the appendix in the embodiments of this utility model. Figure 1-4 The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some embodiments of this utility model, and 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.

[0020] Example:

[0021] like Figures 1 to 4As shown, this utility model discloses a novel adjustable inkjet printer nozzle device, including a nozzle frame and a nozzle body 1. The nozzle frame includes a frame 2, a connecting arm 3, a horizontal profile 4, a vertical seat 5, and a nozzle seat 6. The frame 2 is located above the horizontal profile 4. During operation, the frame 2 is fixed above the product to be printed. The frame 2 includes two parallel vertical profiles 21 and a connecting profile 22 connecting the two vertical profiles 21. Connecting plates 23 are fixedly connected to the four corners of the frame 2. It should be noted that the longitudinal profile 21 extends forward and backward in the length direction, while the transverse profile 4 extends left and right in the length direction. There are two connecting arms 3, which are fixedly connected to both ends of the transverse profile 4. The two connecting arms 3 are also slidably connected to the two longitudinal profiles 21. The frame 2 is provided with a first drive mechanism for driving the connecting arms 3 to move forward and backward along the longitudinal profile 21. In addition, the vertical seat 5 is slidably connected to the transverse profile 4. The connecting arm 3 is provided with a second drive mechanism for driving the vertical seat 5 to move left and right along the transverse profile 4. The nozzle seat 6 is slidably connected to the vertical seat 5. The vertical seat 5 is provided with a third drive mechanism for driving the nozzle seat 6 to move up and down. The nozzle body 1 is set on the nozzle seat 6. Its position can be automatically adjusted in three directions (forward, backward, left and right, and up and down) by the above-mentioned drive mechanisms to adapt to packaging materials of different sizes or shapes.

[0022] In this utility model, the nozzle holder 6 includes a rotating shaft mounting plate 61, on which a rotating shaft 71 is rotatably connected. The nozzle body 1 is fixedly connected to the rotating shaft 71. The nozzle holder 6 is provided with a fourth driving mechanism for driving the rotating shaft 71 to rotate. It should be noted that the rotating shaft mounting plate 61 and the fourth driving mechanism will not interfere with the rotation of the nozzle body 1 within a certain angle range on the front side, thus meeting the usage requirements.

[0023] Specifically, the fourth drive mechanism includes a brake servo motor 72, an active synchronous pulley 73, a passive synchronous pulley 74, and a synchronous belt 75. The brake servo motor 72 is fixed on the nozzle base 6, the active synchronous pulley 73 is fixedly connected to the output shaft of the brake servo motor 72, the passive synchronous pulley 74 is fixedly connected to the rotating shaft 71, and the synchronous belt 75 is fitted on the active synchronous pulley 73 and the passive synchronous pulley 74. When the brake servo motor 72 starts, the active synchronous pulley 73 drives the passive synchronous pulley 74 to rotate through the synchronous belt 75, thereby driving the rotating shaft 71 to rotate and adjust the tilt angle of the nozzle body 1. The brake servo motor 72 is existing technology. It is a special type of motor that integrates a mechanical braking device on the basis of a common servo motor. Its core function is to lock the motor shaft through the synergistic action of the brake coil and the brake pad when the motor stops running, so as to prevent position displacement caused by external force or gravity.

[0024] The specific structure of the nozzle body 1 fixedly connected to the rotating shaft 71 is as follows: a shaft tube clamp 11 is fixedly connected to the rear side of the nozzle body 1, and the shaft tube clamp 11 has a connection port 111 for the rotating shaft 71 to pass through and a clamping gap 112 extending from the connection port 111 out of the shaft tube clamp 11. The shaft tube clamp 11 is provided with a locking screw 12 on the clamping gap 112. By tightening the locking screw 12, the relative position of the rotating shaft 71 and the nozzle body 1 can be fixed to prevent loosening during operation.

[0025] In this utility model, the connecting arm 3 is slidably connected to the longitudinal profile 21, the vertical seat 5 is slidably connected to the transverse profile 4, and the nozzle seat 6 is slidably connected to the vertical seat 5, all using a guide rail and slider structure for sliding connection. Specifically: a first guide rail 81 is fixedly connected to the longitudinal profile 21 in a front-to-back direction, and a first slider 82 is fixedly connected to the connecting arm 3 and slidably mounted on the first guide rail 81; a second guide rail 83 is fixedly connected to the transverse profile 4 in a left-to-right direction, and a second slider 84 is fixedly connected to the vertical seat 5 and slidably mounted on the second guide rail 83; a third guide rail 85 is fixedly connected to the vertical seat 5 in a vertical direction, and a third slider 86 is fixedly connected to the nozzle seat 6 and slidably mounted on the third guide rail 85.

[0026] In this utility model, the first drive mechanism, the second drive mechanism, and the third drive mechanism all employ a motor, a lead screw connected to the motor output shaft, and a nut seat threaded onto the lead screw for driving operation. Specifically:

[0027] The first drive mechanism includes: a first motor 91 fixedly connected to the connecting plate 23; a first lead screw 92 rotatably connected to the connecting plate 23 and connected to the output shaft of the first motor 91; and a first nut seat 93 fixed to the connecting arm 3 and threadedly engaged with the first lead screw 92. The first motor 91 drives the first lead screw 92, which in turn drives the first nut seat 93, causing the connecting arm 3 to move back and forth along the first guide rail 81. It should be noted that to ensure synchronous rotation of the first motors 91 in both drive mechanisms (i.e., maintaining consistency when driving the two connecting arms 3 along the first guide rail 81), the models, installation positions, and transmission paths of the first motors, first lead screws, and first nut seats in both drive mechanisms must be completely symmetrical. Then, one first motor can be designated as the master motor, and its movement is directly controlled by commands from the host computer. The other first motor receives real-time speed / angle data from the master motor and adjusts its output using a PID algorithm to ensure synchronization with the master motor. A high-speed industrial communication protocol is used to transmit master-slave data, reducing signal delay. Furthermore, a high-precision encoder (such as an absolute encoder or an incremental encoder) can be installed on the end of each motor shaft to detect the motor speed and angle in real time. A linear displacement sensor (such as an optical scale or magnetic scale) is installed on the nut seat to directly measure the movement position of the transverse profile. The motor speed is adjusted by a PID control algorithm to keep the speed error between the two motors within the allowable range. Based on the angle feedback from the encoder and the linear position of the displacement sensor, the actual movement of the transverse profile is calculated, and the motor output is adjusted to compensate for the error. The first motor is a servo motor. The above technologies are common knowledge to those skilled in the art. In addition, those skilled in the art can also use other existing technologies to ensure the synchronization of the two first drive mechanisms, which will not be elaborated here.

[0028] The second drive mechanism includes: a second motor 94 fixed on the connecting arm 3, a second lead screw 95 rotatably connected to the connecting arm 3 and connected to the output shaft of the second motor 94, and a second nut seat 96 fixed on the vertical seat 5 and threadedly engaged with the second lead screw 95. The second motor 94 drives the second lead screw 95 to drive the second nut seat 96, so that the vertical seat 5 moves left and right along the second guide rail 83.

[0029] The third drive mechanism includes: a third motor 97 fixed on the vertical seat 5, a third lead screw 98 rotatably connected to the vertical seat 5 and connected to the output shaft of the third motor 97, and a third nut seat 99 fixed on the nozzle seat 6 and threaded onto the third lead screw 98. The third motor 97 drives the third lead screw 98 to drive the third nut seat 99, so that the nozzle seat 6 moves up and down along the third guide rail 85.

[0030] It should also be noted that the terms used in this utility model, such as "front", "rear", "vertical", "horizontal", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model 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, they should not be construed as limiting the scope of protection of this utility model.

[0031] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A novel adjustable printhead device for inkjet printers, characterized in that: The device includes a nozzle holder and a nozzle body. The nozzle holder includes a frame, connecting arms, a horizontal profile, a vertical seat, and a nozzle base. The frame is located above the horizontal profile and includes two parallel vertical profiles. The vertical profiles extend forward and backward along their length, while the horizontal profiles extend left and right along their length. Two connecting arms are provided and fixedly connected to both ends of the horizontal profile. The two connecting arms are also slidably connected to the two vertical profiles. The frame has a first drive mechanism for driving the connecting arms to move forward and backward along the vertical profiles. The vertical seat is slidably connected to the horizontal profile. The connecting arms have a second drive mechanism for driving the vertical seat to move left and right along the horizontal profile. The nozzle base is slidably connected to the vertical seat. The vertical seat has a third drive mechanism for driving the nozzle base to move up and down. The nozzle body is mounted on the nozzle base.

2. The novel adjustable inkjet printer nozzle device according to claim 1, characterized in that: A rotating shaft is rotatably connected to the nozzle holder, and the nozzle body is fixedly connected to the rotating shaft. A fourth driving mechanism for driving the rotating shaft to rotate is provided on the nozzle holder.

3. The novel adjustable inkjet printer nozzle device according to claim 2, characterized in that: The fourth drive mechanism includes a brake servo motor, an active synchronous pulley, a passive synchronous pulley, and a synchronous belt. The brake servo motor is fixed on the nozzle base, the active synchronous pulley is fixedly connected to the output shaft of the brake servo motor, the passive synchronous pulley is fixedly connected to the rotating shaft, and the synchronous belt is fitted onto the active synchronous pulley and the passive synchronous pulley.

4. The novel adjustable inkjet printer nozzle device according to claim 3, characterized in that: A shaft tube clamp is fixedly connected to the rear side of the nozzle body. The shaft tube clamp has a connection port for the rotating shaft to pass through and a clamping gap through the connection port. The shaft tube clamp is provided with a locking screw in the clamping gap.

5. The novel adjustable inkjet printer nozzle device according to claim 1, characterized in that: The connecting arm is slidably connected to the longitudinal profile, the vertical seat is slidably connected to the transverse profile, and the nozzle seat is slidably connected to the vertical seat, all using a guide rail slider structure for sliding connection.

6. The novel adjustable inkjet printer nozzle device according to claim 1, characterized in that: The first drive mechanism, the second drive mechanism, and the third drive mechanism all use a motor, a lead screw connected to the output shaft of the motor, and a nut seat threaded onto the lead screw for driving.

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