A coding machine ink line adjustment mechanism

Abstract

This application relates to an ink line adjustment mechanism for an inkjet printer, belonging to the technical field of inkjet printing equipment. It includes a cover plate, an ink line adjustment frame for adjusting the position of the ink line, and an eccentric shaft for driving the ink line adjustment frame to adjust its horizontal position. The nozzle is mounted on the ink line adjustment frame, which is assembled on the cover plate. The eccentric shaft passes through the ink line adjustment frame and is rotatably mounted on the cover plate. This application drives the ink line adjustment frame to move horizontally via the eccentric shaft, causing the nozzle to move synchronously. This allows the ink line to be adjusted to the symmetrical plane of the charging slot, solving the problem in the prior art where the ink line cannot be adjusted horizontally, resulting in the ink line being difficult to position in the symmetrical plane of the charging slot. This reduces ink droplet charging data deviation and improves ink droplet deflection accuracy and printing quality.

Description

Technical Field

[0001] This application relates to the technical field of inkjet printing equipment, and in particular to an ink line adjustment mechanism for an inkjet printer. Background Technology

[0002] Inkjet printers are devices that use a non-contact method to print patterns, text, and numbers on the surface of various objects. Specifically, ink is ejected at high speed from the nozzle under pressure from the supply pump, broken into uniform droplets by the action of piezoelectric crystals, and the droplets are charged as they pass through the charging tank. They are then deflected by the deflection plate and fall onto the product surface to form the code. The uncharged droplets are recycled by the recycling tube for reuse.

[0003] In the actual operation of inkjet printers, the charging slot is generally designed to have strict planar symmetry along the direction of ink line flight. This characteristic often makes it difficult to adjust the position of the charging slot relative to the ink line. Simultaneously, to align the ink line with the recovery port of the recovery tube, the nozzle position needs to be adjusted. In existing technology, nozzle position adjustment is achieved by a cam driving the nozzle to rotate horizontally around a fixed axis, thereby adjusting the nozzle's horizontal angle to keep the ink line parallel to both sides of the charging slot, ultimately adjusting the ink line position to the recovery port.

[0004] Regarding the aforementioned technologies, since the nozzle position adjustment is based on a fixed rotating shaft, the ink line is made parallel to both sides of the charging slot by rotating a cam. When the adjusted ink line is not within the symmetrical plane of the charging slot, the existing structure cannot achieve horizontal translational adjustment of the ink line, making it difficult for the ink line to be within the symmetrical plane of the charging slot. This leads to deviations in ink droplet charging data, affects deflection accuracy, and ultimately reduces coding quality. Utility Model Content

[0005] In view of the shortcomings of the existing technology, one of the objectives of this utility model is to provide an ink line adjustment mechanism for a coding machine.

[0006] This application provides an ink line adjustment mechanism for an inkjet printer, which adopts the following technical solution: The ink line adjustment mechanism of the inkjet printer includes a cover plate, an ink line adjustment frame for adjusting the position of the ink line, and an eccentric shaft for driving the ink line adjustment frame to adjust its position in the horizontal direction. The nozzle is mounted on the ink line adjustment frame, the ink line adjustment frame is assembled on the cover plate, and the eccentric shaft passes through the ink line adjustment frame and is rotatably mounted on the cover plate.

[0007] By adopting the above technical solution, the ink line adjustment mechanism of the inkjet printer directly drives the ink line adjustment frame to move horizontally through the rotation of the eccentric shaft, thereby causing the nozzle to move synchronously to adjust the ink line position. This design effectively solves the problem in existing technologies where the ink line cannot be translated and adjusted relative to the center line of the charging tank, ensuring that the ink line is precisely positioned within the symmetrical plane of the charging tank, thus reducing the deviation of ink droplet charging data, improving ink droplet deflection accuracy, and ultimately improving the coding quality.

[0008] Preferably, the eccentric shaft includes a base shaft section and an eccentric shaft section, the eccentric shaft section is fixed on the base shaft section, and the axis of the eccentric shaft section and the axis of the base shaft section do not coincide; a first mounting hole is provided on the cover plate, and a shaft hole is provided on the ink line adjustment frame; the base shaft section is rotatably installed in the first mounting hole, and the eccentric shaft section is rotatably installed in the shaft hole.

[0009] By adopting the above technical solution, the fixed connection between the base shaft segment and the eccentric shaft segment and the axis offset design realize the precise conversion of the eccentric shaft rotational motion to the ink line adjustment frame translational motion. When the base shaft segment rotates stably in the first mounting hole of the cover plate, the eccentric circumferential motion of the eccentric shaft segment can smoothly drive the adjustment frame to move in the horizontal direction through the fit and cooperation with the shaft hole of the ink line adjustment frame. This allows the operator to achieve precise control of the ink line position by controlling the rotation of the eccentric shaft, effectively solving the problems of insufficient adjustment accuracy and difficulty in aligning the ink line with the symmetrical plane of the charging slot in the existing technology.

[0010] Preferably, the eccentric shaft further includes an adjustment section for rotating the eccentric shaft by the tool, the adjustment section being fixed at one end of the eccentric shaft section away from the base shaft section.

[0011] By adopting the above technical solution, an adjustment section is set at the end of the eccentric shaft, providing operators with a convenient and reliable force application point. This facilitates the rotation of the eccentric shaft using common tools, making the adjustment process more labor-saving and efficient, and avoiding operational difficulties or uneven force application caused by unreasonable design of the adjustment part. At the same time, it makes the rotation angle of the eccentric shaft easier to control, thereby improving the accuracy of ink line adjustment.

[0012] Preferably, the ink line adjusting bracket has an arc-shaped through hole, the arc-shaped through hole is arc-shaped, and the arc-shaped through hole is configured with the eccentric shaft segment as the center. The arc-shaped through hole is provided with a first locking screw for locking the ink line adjusting bracket.

[0013] By adopting the above technical solution, the arc-shaped through hole on the ink line adjustment frame is set with the eccentric shaft section as the center. Together with the first locking screw, it forms a structure that combines adjustment flexibility and fixed stability. When the ink line adjustment frame moves horizontally under the drive of the eccentric shaft, the first locking screw slides smoothly along the arc path of the arc-shaped through hole. This does not hinder the adjustment process, and the trajectory constraint of the through hole ensures the accuracy of the adjustment direction, preventing the ink line adjustment frame from shifting or getting stuck during movement. After the ink line is adjusted to the symmetrical plane of the charging slot, tightening the first locking screw can fix the ink line adjustment frame in the target position, effectively resisting the positional changes caused by equipment vibration or external force interference, and ensuring that the ink line is in a precise state for a long time.

[0014] Preferably, both the eccentric shaft and the ink line adjustment bracket are made of wear-resistant materials.

[0015] By adopting the above technical solution, the eccentric shaft and ink line adjustment bracket are made of wear-resistant materials, which can effectively resist the frictional wear generated during long-term operation of the eccentric shaft and ink line adjustment bracket. This avoids gaps or shape deformation on the contact surface due to frequent adjustments, thereby maintaining the stability of the fit between the eccentric shaft and ink line adjustment bracket. At the same time, it reduces the maintenance frequency and cost caused by component wear, ensuring the continuous and stable operation of the inkjet printer.

[0016] Preferably, it also includes an eccentric cam, which comprises a base cylinder and an eccentric cylinder. The eccentric cylinder is fixed on the base cylinder, and the axis of the eccentric cylinder does not coincide with the axis of the base cylinder. The cover plate has an oblong hole, and the ink line adjusting bracket has a through hole. The base cylinder is assembled in the oblong hole, and the base cylinder can slide or rotate in the oblong hole. The eccentric cylinder is rotatably installed in the through hole.

[0017] By adopting the above technical solution, the axial offset design of the base cylinder and the eccentric cylinder, combined with the waist-shaped hole of the cover plate and the through hole of the ink line adjustment frame, can achieve smooth translation adjustment by sliding the base cylinder in the waist-shaped hole when the ink line adjustment frame moves horizontally, and can also complete the angle adjustment by rotating the eccentric cam to drive the ink line adjustment frame to rotate around the eccentric shaft. This design enables the adjustment mechanism to have both translation and angle adjustment functions, expanding the dimensions of ink line adjustment.

[0018] Preferably, the ink line adjusting frame is provided with a nozzle fixing frame, and the nozzle fixing frame has a second mounting hole along the ink line flight direction, and the nozzle is fixedly installed in the second mounting hole.

[0019] By adopting the above technical solution, the nozzle fixing bracket on the ink line adjusting frame fixes the nozzle through the second mounting hole set along the ink line flight direction. By utilizing the cooperation between the inner wall of the second mounting hole and the outer wall of the nozzle, the axial stability of the nozzle after installation is ensured, avoiding axial movement caused by factors such as vibration during the spraying process. At the same time, the guiding effect of the second mounting hole constrains the spraying direction of the nozzle.

[0020] Preferably, the nozzle holder has a third mounting hole along the radial direction of the nozzle and a fourth mounting hole on the outer periphery of the nozzle. A second locking screw is provided in the third mounting hole, and the second locking screw passes through the third mounting hole and extends into the fourth mounting hole.

[0021] By adopting the above technical solution, the nozzle holder forms a radial locking structure by using the third mounting hole and the second locking screw arranged radially, together with the fourth mounting hole on the outer periphery of the nozzle. When the nozzle is adjusted to the preset position, the tightened second locking screw can apply a stable radial locking force to the nozzle, fixing the nozzle in the second mounting hole, ensuring that the nozzle's spray angle and position remain stable for a long time, thereby ensuring that the ink line always flies along the preset trajectory.

[0022] In summary, this application includes at least one of the following beneficial technical effects: 1. The ink line adjustment mechanism of the inkjet printer directly drives the ink line adjustment frame to move horizontally through the rotation of the eccentric shaft, thereby causing the nozzle to move synchronously to adjust the ink line position. This design effectively solves the problem in existing technologies where the ink line cannot be adjusted relative to the center line of the charging tank, allowing the ink line to be precisely positioned within the symmetrical plane of the charging tank. This ensures the ink line is in the ideal working position, thereby reducing the deviation of ink droplet charging data, improving ink droplet deflection accuracy, and ultimately improving the coding quality. 2. The fixed connection and axis offset design between the base shaft segment and the eccentric shaft segment realizes the precise conversion of the eccentric shaft rotational motion to the ink line adjustment frame translational motion. When the base shaft segment rotates stably in the first mounting hole of the cover plate, the eccentric circumferential motion of the eccentric shaft segment can smoothly drive the adjustment frame to move horizontally through the fit and cooperation with the shaft hole of the ink line adjustment frame. This allows the operator to achieve precise control of the ink line position by controlling the rotation of the eccentric shaft, effectively solving the problems of insufficient adjustment accuracy and difficulty in aligning the ink line with the symmetrical plane of the charging slot in the existing technology. 3. An adjustment section is provided at the end of the eccentric shaft section, providing operators with a convenient and reliable force application point. This facilitates rotation of the eccentric shaft using common tools, making the adjustment process more labor-saving and efficient, and avoiding operational difficulties or uneven force application caused by unreasonable adjustment part design. At the same time, it makes the rotation angle of the eccentric shaft easier to control, thereby improving the accuracy of ink line adjustment. Attached Figure Description

[0023] Figure 1This is a top view of an embodiment of the present application illustrating the ink line adjustment mechanism of a coding machine; Figure 2 This embodiment of the application is an exploded view showing the ink line adjustment mechanism of the inkjet printer; Figure 3 for Figure 2 The enlarged view in section A is a structural schematic diagram showing the eccentric shaft and eccentric cam.

[0024] Reference numerals: 1. Charging slot; 2. Nozzle; 3. Cover plate; 4. Ink line adjustment bracket; 5. Eccentric shaft; 51. Base shaft section; 52. Eccentric shaft section; 53. Adjustment section; 6. First mounting hole; 7. Shaft hole; 8. Arc-shaped through hole; 9. First locking screw; 10. Eccentric cam; 101. Base cylinder; 102. Eccentric cylinder; 11. Waist-shaped hole; 12. Through hole; 13. Nozzle fixing bracket; 14. Second mounting hole; 15. Third mounting hole; 16. Fourth mounting hole; 17. Second locking screw. Detailed Implementation

[0025] The following is in conjunction with the appendix Figure 1 - Appendix Figure 3 This application will be described in further detail.

[0026] This application discloses an ink line adjustment mechanism for an inkjet printer.

[0027] Reference Figure 1 and Figure 2 An ink line adjustment mechanism for an inkjet printer includes a cover plate 3, an ink line adjustment frame 4 for adjusting the position of the ink line, and an eccentric shaft 5 for driving the ink line adjustment frame 4 to adjust its position horizontally. A nozzle 2 is mounted on the ink line adjustment frame 4, which is mounted on the cover plate 3. The eccentric shaft 5 passes through the ink line adjustment frame 4 and is rotatably mounted on the cover plate 3. When the position of the ink line needs to be adjusted horizontally, the rotation of the eccentric shaft 5 through the ink line adjustment frame 4 and rotatably mounted on the cover plate 3 causes the ink line adjustment frame 4 to move horizontally, thereby causing the nozzle 2 mounted on the ink line adjustment frame 4 to move synchronously, gradually adjusting the ink line ejected by the nozzle 2 to the symmetrical plane of the charging slot 1.

[0028] Specifically, refer to Figure 2 and Figure 3The eccentric shaft 5 includes a base shaft section 51 and an eccentric shaft section 52. The eccentric shaft section 52 is rigidly fixed to the base shaft section 51. The base shaft section 51 and the eccentric shaft section 52 rotate synchronously, and the axes of the eccentric shaft section 52 and the base shaft section 51 do not coincide. A first mounting hole 6 is provided on the cover plate 3, and a shaft hole 7 is provided on the ink line adjustment frame 4. The base shaft section 51 is rotatably installed in the first mounting hole 6. The outer periphery of the base shaft section 51 is precisely fitted with the first mounting hole 6 on the cover plate 3. This fit ensures that the base shaft section 51 can rotate in the first mounting hole 6, and also prevents the eccentric shaft 5 from shaking during rotation through stable radial support. The eccentric shaft section 52 is rotatably installed in the shaft hole 7. The inner wall of the shaft hole 7 is in contact with the outer wall of the eccentric shaft section 52. The eccentric movement of the eccentric shaft section 52 is transmitted to the ink line adjustment frame 4 through the shaft hole 7. When the base shaft section 51 rotates around its own axis within the first mounting hole 6, the eccentric shaft section 52 will follow suit with eccentric circular motion, forcing the ink line adjustment bracket 4 to move in the horizontal direction.

[0029] Furthermore, the eccentric shaft 5 also includes an adjustment section 53 for the tool to rotate the eccentric shaft 5. The adjustment section 53 is fixed at one end of the eccentric shaft section 52 away from the base shaft section 51, and the end of the adjustment section 53 away from the eccentric shaft section 52 is hexagonal.

[0030] Reference Figure 1 and Figure 2 The ink line adjustment frame 4 has an arc-shaped through hole 8, which is arranged with the eccentric shaft segment 52 as the center. A first locking screw 9 for locking the ink line adjustment frame 4 is located inside the arc-shaped through hole 8. The screw portion of the first locking screw 9 passes through the arc-shaped through hole 8 and is screwed onto the cover plate 3. When the ink line adjustment frame 4 moves horizontally under the drive of the eccentric shaft 5, the first locking screw 9 slides along the arc path of the arc-shaped through hole 8. At this time, the first locking screw 9 is in a loose state and does not affect the movement of the ink line adjustment frame 4. When the ink line position is adjusted to the symmetrical plane of the charging slot 1, the first locking screw 9 is tightened. The head of the first locking screw 9 will be tightly pressed against the surface of the ink line adjustment frame 4. Through the combined action of friction and thread locking force, the ink line adjustment frame 4 is fixed in the current position, preventing the ink line position from shifting due to equipment vibration or external forces.

[0031] Both the eccentric shaft 5 and the ink line adjustment bracket 4 are made of wear-resistant material. This wear-resistant material effectively resists frictional wear generated during long-term rotation and translation of the eccentric shaft 5 and the ink line adjustment bracket 4, preventing gaps from appearing on the contact surface due to frequent adjustments and affecting the stability of the ink line position. Preferably, the eccentric shaft 5 and the ink line adjustment bracket 4 are made of the same metal material. Using the same metal material enhances wear resistance through its inherent hardness, and ensures that the deformation trends of the eccentric shaft 5 and the ink line adjustment bracket 4 remain consistent when the ambient temperature changes, further guaranteeing the stability of the fit clearance and thus extending the service life of the overall mechanism.

[0032] Reference Figure 2 and Figure 3 The ink line adjustment mechanism of the inkjet printer disclosed in this application embodiment also includes an eccentric cam 10. The eccentric cam 10 includes a base cylinder 101 and an eccentric cylinder 102. The eccentric cylinder 102 is fixed on the base cylinder 101, and the axis of the eccentric cylinder 102 does not coincide with the axis of the base cylinder 101. The cover plate 3 has an oblong hole 11, and the ink line adjustment frame 4 has a through hole 12. The base cylinder 101 is assembled in the oblong hole 11, and the base cylinder 101 can slide or rotate in the oblong hole 11. The eccentric cylinder 102 is rotatably installed in the through hole 12. When the ink line adjusting frame 4 is adjusted horizontally, the base cylinder 101 in the waist-shaped hole 11 moves within the waist-shaped hole 11 as the ink line adjusting frame 4 moves. Since the eccentric cylinder 102 is embedded in the through hole 12, it drives the ink line adjusting frame 4 to complete the horizontal adjustment. When the ink line adjusting frame 4 is adjusted at an angle, the eccentric cam 10 is rotated to adjust the angle of the ink line adjusting frame 4 with the eccentric shaft 5 as the axis of rotation.

[0033] Reference Figure 1 and Figure 2 The ink line adjustment bracket 4 is equipped with a nozzle fixing bracket 13. The nozzle fixing bracket 13 has a second mounting hole 14 along the ink line flight direction, and the nozzle 2 is fixedly installed in the second mounting hole 14. The second mounting hole 14 passes through the nozzle fixing bracket 13 along the ink line flight direction. The inner wall of the second mounting hole 14 matches the outer wall of the nozzle 2, which not only ensures the axial stability of the nozzle 2 after installation, but also guides the nozzle 2 to ensure that the spray direction strictly follows the ink line flight path, preventing the ink line from deviating from the preset trajectory due to the tilt of the nozzle 2.

[0034] The nozzle holder 13 has a third mounting hole 15 radially arranged around the nozzle 2, and a fourth mounting hole 16 is provided on the outer periphery of the nozzle 2. A second locking screw 17 is provided in the third mounting hole 15, passing through the third mounting hole 15 and extending into the fourth mounting hole 16. When the nozzle 2 is inserted into the second mounting hole 14 and adjusted to the preset position, the second locking screw 17 is screwed in from the third mounting hole 15. The screw of the second locking screw 17 will gradually extend into the fourth mounting hole 16. As the second locking screw 17 is tightened, the screw of the second locking screw 17, through its engagement with the fourth mounting hole 16, generates a radial locking force on the nozzle 2, fixing the nozzle 2 in the second mounting hole 14. This prevents the nozzle 2 from rotating circumferentially due to vibration during spraying, ensuring the long-term stability of the spray angle and position of the nozzle 2.

[0035] The implementation principle of this application embodiment is as follows: When the ink line position needs to be adjusted, first loosen the first locking screw 9 in the arc-shaped through hole 8 on the ink line adjustment bracket 4. Use a tool to engage the hexagonal head of the adjustment section 53 of the eccentric shaft 5. Rotate the hexagonal head to rotate the eccentric shaft 5. The base shaft section 51 then rotates in the first mounting hole 6 of the cover plate 3, driving the eccentric shaft section 52 to perform eccentric circular motion. The eccentric shaft section 52, by engaging with the shaft hole 7 on the ink line adjustment bracket 4, forces the ink line adjustment bracket 4 to move horizontally. At the same time, the base cylinder 101 of the eccentric cam 10 moves with the ink line adjustment bracket 4 in the oblong hole 11 of the cover plate 3, and the eccentric cylinder 102 rotates synchronously in the through hole 12 of the ink line adjustment bracket 4.

[0036] If angle adjustment is required, rotate the eccentric cam 10 so that the ink line adjustment bracket 4 can be finely adjusted around the eccentric shaft 5. During the adjustment process, loosen the first locking screw 9 so that the first locking screw 9 can slide along the arc-shaped through hole 8 without obstructing the adjustment. After the ink line position is adjusted to the symmetrical plane of the charging slot 1, tighten the first locking screw 9 to fix the ink line adjustment bracket 4.

[0037] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. An ink line adjustment mechanism for an inkjet printer, the mechanism comprising: It includes a cover plate (3), an ink line adjustment frame (4) for adjusting the position of the ink line, and an eccentric shaft (5) for driving the ink line adjustment frame (4) to adjust its position in the horizontal direction. The nozzle (2) is mounted on the ink line adjustment frame (4), which is assembled on the cover plate (3). The eccentric shaft (5) passes through the ink line adjustment frame (4) and is rotatably mounted on the cover plate (3).

2. The inkjet printer ribbon adjustment mechanism of claim 1, wherein, The eccentric shaft (5) includes a base shaft section (51) and an eccentric shaft section (52). The eccentric shaft section (52) is fixed on the base shaft section (51), and the axis of the eccentric shaft section (52) and the axis of the base shaft section (51) do not coincide. The cover plate (3) is provided with a first mounting hole (6), and the ink line adjusting bracket (4) is provided with a shaft hole (7). The base shaft section (51) is rotatably installed in the first mounting hole (6), and the eccentric shaft section (52) is rotatably installed in the shaft hole (7).

3. The inkjet printer ribbon adjustment mechanism of claim 2, wherein, The eccentric shaft (5) further includes an adjustment section (53) for the tool to rotate the eccentric shaft (5), the adjustment section (53) being fixed at one end of the eccentric shaft section (52) away from the base shaft section (51).

4. The inkjet printer ribbon adjustment mechanism of claim 2, wherein, The ink line adjustment frame (4) is provided with an arc-shaped through hole (8). The arc-shaped through hole (8) is arc-shaped and is configured with the eccentric shaft (5) as the center. The arc-shaped through hole (8) is provided with a first locking screw (9) for locking the ink line adjustment frame (4).

5. The inkjet printer ribbon adjustment mechanism of claim 1, wherein, Both the eccentric shaft (5) and the ink line adjustment bracket (4) are made of wear-resistant materials.

6. The inkjet printer ribbon adjustment mechanism of claim 1, wherein, It also includes an eccentric cam (10), which has a base cylinder (101) and an eccentric cylinder (102). The eccentric cylinder (102) is fixed on the base cylinder (101), and the axis of the eccentric cylinder (102) does not coincide with the axis of the base cylinder (101). The cover plate (3) has a waist-shaped hole (11), and the ink line adjusting bracket (4) has a through hole (12). The base cylinder (101) is assembled in the waist-shaped hole (11), and the base cylinder (101) can slide or rotate in the waist-shaped hole (11). The eccentric cylinder (102) is rotatably installed in the through hole (12).

7. The inkjet printer ribbon adjustment mechanism of claim 1, wherein The ink line adjustment frame (4) is provided with a nozzle fixing frame (13), and the nozzle fixing frame (13) has a second mounting hole (14) along the ink line flight direction, and the nozzle (2) is fixedly installed in the second mounting hole (14).

8. The inkjet printer ribbon adjustment mechanism of claim 7, wherein, The nozzle holder (13) has a third mounting hole (15) radially along the nozzle (2), and a fourth mounting hole (16) is provided on the outer periphery of the nozzle (2). A second locking screw (17) is provided in the third mounting hole (15), and the second locking screw (17) passes through the third mounting hole (15) and extends into the fourth mounting hole (16).

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