Spray head of inkjet printer

Abstract

The utility model discloses a spray head of an inkjet printer, which comprises a spray head and a connecting pipe, the spray head is provided with a clamping device for fixing the connecting pipe, the clamping device comprises a clamping jaw, a mounting seat, a sliding block, a fixing rod and a limiting mechanism, and the problems that when the spray head is used for coping with inkjet printers with different powers, the connecting pipes with different inner diameters need to be replaced, and the replacement is inconvenient are solved. The problems that connecting pipes on existing sprayers are all glued, the connecting pipes are directly pulled out when needing to be replaced, the connecting pipes are glued after being replaced, the sprayers are damaged to a certain extent when the connecting pipes are replaced in the mode for a long time, solidified glue on the sprayers and the connecting pipes needs to be cleaned regularly, and the operation is troublesome are solved.

Description

Technical Field

[0001] This utility model relates to the field of inkjet printer technology, and in particular to a printhead for an inkjet printer. Background Technology

[0002] Modern inkjet printers have a connecting tube on the printhead that connects the printhead to the ink delivery tube. The inner diameter of this connecting tube is usually fixed. This means that if the power of the inkjet printer is increased and the printer is running at high speed, ink interruption may occur if the inner diameter of the connecting tube is small. Conversely, if the printer is handling delicate items, the power is reduced, and if the inner diameter is larger, excess ink will be squeezed out of the printhead.

[0003] Therefore, when dealing with inkjet printers with different power levels, it is necessary to replace the connecting tubes with different inner diameters. However, the connecting tubes on the existing printheads are all glued on. When you need to replace the connecting tube, you just pull it off and glue it back on after the replacement is completed. Using this method to replace the connecting tube in the long term not only damages the printhead, but also requires regular cleaning of the hardened glue on the printhead and connecting tube, which is quite troublesome. Utility Model Content

[0004] This application provides a printhead for an inkjet printer that solves the problem of needing to replace the connecting tube on the printhead to accommodate different power levels of the inkjet printer. The existing adhesive method not only damages the printhead after prolonged use, but also requires regular cleaning of the hardened adhesive on the printhead and connecting tube.

[0005] This application provides a printhead for an inkjet printer, including a printhead and a connecting tube. The printhead is equipped with a clamping device for fixing the connecting tube. The clamping device includes grippers, a mounting base, a slider, a fixing rod, and a limiting mechanism. The mounting base is mounted on the printhead, and the fixing rod is mounted at the center of the mounting base. A plurality of grippers are connected to the mounting base and are arranged in a ring. The slider slides on the fixing rod, and the grippers are connected to the slider. The slider and the printhead are equipped with a limiting mechanism.

[0006] Furthermore, the mounting base has a cavity, the slider is located inside the cavity, the mounting base has a movable groove, and the gripper is located in the movable groove.

[0007] Furthermore, a connecting rod is fixedly connected to the mounting base, the gripper is rotatably connected to the connecting rod, a bracket is provided on each side of the gripper, the bracket is fixedly connected to the slider, a limit rod is fixedly connected to the bracket, and a waist-shaped groove is provided on the gripper, the limit rod slides in the waist-shaped groove.

[0008] Furthermore, one end of the gripper is provided with an inclined surface, a protrusion is fixedly connected to the connecting tube, and one end of the protrusion is provided with an inclined surface, the inclined surface one and the inclined surface two cooperate with each other.

[0009] Furthermore, a positioning rod is fixedly connected to the mounting base, and a positioning hole that mates with the positioning rod is provided on the connecting pipe.

[0010] Furthermore, a spring is installed between the slider and the mounting base, and the spring is sleeved on the fixing rod.

[0011] Furthermore, the limiting mechanism includes a connecting plate, a rotating block, a handle, and a locking block. One end of the connecting plate is fixedly connected to the slider. A sliding groove is provided on the mounting base. The rotating block is located in the sliding groove. One end of the rotating block is rotatably connected to the other end of the connecting plate. The handle is fixedly connected to the other end of the rotating block. A locking block is fixedly connected to the nozzle.

[0012] In summary, the beneficial effects of the printhead of a printing machine in this application are as follows: the limiting mechanism drives the slider to slide on the fixed rod, which in turn drives the ring-shaped grippers to open and close synchronously, realizing the rapid clamping and release of the connecting tube. Compared with the traditional adhesive method, there is no need to wait for the glue to solidify or clean up the residual glue. The operator only needs to align the positioning hole on the connecting tube with the positioning rod and place it on the mounting base. Then, pull down the rotating block so that the grippers clamp the connecting tube. After that, rotate the rotating block to lock the handle on the rotating block into the locking block to fix the grippers and realize the clamping of the connecting tube. This greatly improves the replacement efficiency of the connecting tube, directly eliminates the sampling adhesive method, and avoids glue residue and glue damage to the printhead. Attached Figure Description

[0013] Figure 1 A perspective view of the utility model;

[0014] Figure 2 This is a schematic diagram of the structure of the clamping device of the utility model;

[0015] Figure 3 This is a cross-sectional view of the clamping device of the utility model;

[0016] Figure 4 This is a partial structural schematic diagram of the utility model;

[0017] Figure 5 This is a schematic diagram of the clamping state of the utility model clamping device.

[0018] Reference numerals: 1. Nozzle; 2. Connecting pipe; 3. Clamping device; 301. Gripper; 302. Mounting base; 303. Slider; 304. Fixing rod; 305. Limiting mechanism; 4. Cavity; 5. Movable groove; 6. Connecting rod; 7. Bracket; 8. Limiting rod; 9. Waist-shaped groove; 10. Protrusion; 11. Positioning rod; 12. Positioning hole; 13. Spring; 14. Connecting plate; 15. Rotating block; 16. Handle; 17. Locking block; 18. Slide groove. Detailed Implementation

[0019] The following description is merely a preferred embodiment of this utility model, and the scope of protection is not limited to this embodiment. All technical solutions falling within the scope of this utility model should be considered within the protection scope of this utility model. It should also be noted that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.

[0020] like Figures 1 to 5 As shown, a printhead for an inkjet printer includes a printhead 1 and a connecting tube 2. A clamping device 3 for fixing the connecting tube 2 is installed on the printhead 1. The connecting tube 2 can be replaced only with a different inner diameter, while the other parameters and shape remain unchanged.

[0021] The clamping device 3 includes grippers 301, a mounting base 302, a slider 303, a fixing rod 304, and a limiting mechanism 305. The mounting base 302 is fixedly connected to the device. The fixing rod 304 is located at the center of the mounting base 302. The outer ring of the fixing rod 304 is fixedly connected to the mounting base 302, and the bottom of the fixing rod 304 is fixedly connected to the printhead 1. An ink passage hole is opened at the center of the fixing rod 304. Several grippers 301 are provided on the mounting base 302, with the grippers 301 centered on the center of the mounting base 302. The origin is arranged in a ring shape. The gripper 301 is rotatably connected to the mounting base 302. A cavity 4 is provided in the mounting base 302. The slider 303 slides on the fixed rod 304 and is located in the cavity 4. One end of the gripper 301 is installed on the slider 303. The mounting base 302 has a number of movable slots 5 corresponding to the number of grippers 301. The grippers 301 can move in the movable slots 5. A limiting mechanism 305 for limiting the movement of the grippers 301 is installed on the slider 303 and the nozzle 1.

[0022] Furthermore, such as Figure 2 , Figure 3As shown, several connecting rods 6 are fixedly connected to the mounting base 302. The gripper 301 is mounted on the connecting rods 6 and rotates around the connecting rods 6. One end of the gripper 301 extends out of the movable groove 5, and the other end of the gripper 301 is located in the cavity 4. A bracket 7 is provided on both sides of the end of the gripper 301 located in the cavity 4. The bracket 7 is fixedly connected to the slider 303. A limiting rod 8 is fixedly connected between the two brackets 7. A waist-shaped groove 9 is provided on the end of the gripper 301 located in the cavity 4. The limiting rod 8 slides in the waist-shaped groove 9. When the slider 303 moves downward, it will drive the gripper 301 to rotate around the connecting rod 6. The design of the waist-shaped groove 9 and the limiting rod 8 can not only increase the range of motion of the gripper 301, but also ensure that the gripper 301 will not get stuck during rotation.

[0023] Furthermore, such as Figure 2 , Figure 4 and Figure 5 As shown, several positioning rods 11 are provided on the mounting base 302. The positioning rods 11 are arranged in a ring with the center of the mounting base 302 as the origin. The bottom of the connecting tube 2 is provided with positioning holes 12 corresponding to the positioning rods 11. The connecting tube 2 can be directly lowered after aligning the positioning holes 12 with the positioning rods 11. The positioning rods 11 play a limiting role for the connecting tube 2. An inclined surface 1 is provided on the end of the gripper 301 that extends out of the movable groove 5. A number of protrusions 10 corresponding to the number of grippers 301 are fixedly connected to the connecting rod 6. An inclined surface 2 is provided on one end of the protrusion 10. The inclined surface 1 and the inclined surface 2 cooperate. When the gripper 301 is pressed down, the inclined surface 1 on the gripper 301 will abut against the inclined surface 2 on the protrusion 10, thereby fixing the connecting tube 2.

[0024] Furthermore, such as Figure 1 , Figure 3 and Figure 5As shown, the limiting mechanism 305 includes a connecting plate 14, a rotating block 15, a handle 16, and a locking block 17. One end of the connecting plate 14 is fixedly connected to the slider 303. A groove 18 is provided on the mounting base 302. The other end of the connecting plate 14 extends from the groove 18 to the outside of the mounting base 302, and the connecting plate 14 slides within the groove 18. One end of the rotating block 15 is rotatably connected to the end of the connecting plate 14 extending from the mounting base 302. The other end of the rotating block 15 is fixedly connected to the handle 16. A locking block 17 is fixedly connected to the nozzle 1. The locking block 17 is located below the end of the connecting plate 14 extending from the mounting base 302. A spring 13 is provided between block 303 and mounting base 302. One end of spring 13 is fixedly connected to slider 303, and the other end of spring 13 is fixedly connected to mounting base 302. Spring 13 is sleeved on fixed rod 304. Pulling rotating block 15 will drive slider 303 to move downward. During the downward sliding movement, all clamps will rotate simultaneously. When the inclined surface one on clamp 301 and the inclined surface two on protrusion 10 are in contact, rotating rotating block 15 will move handle 16 to below locking block 17. Under the action of spring 13, handle 16 will be blocked by locking block 17, thereby achieving the function of fixing clamp 301.

[0025] Working principle of the utility model: The positioning hole 12 at the bottom of the connecting tube 2 is aligned with the positioning rod 11 on the mounting base 302. The connecting tube 2 is lowered vertically, and the positioning rod 11 is inserted into the positioning hole 12 to complete the axial limit, ensuring that the connecting tube 2 and the fixed rod 304 (ink passage hole) are coaxial, thus preventing the ink channel from shifting. The rotating block 15 of the limiting mechanism 305 is pulled, and the rotating block 15 pulls the slider 303 downward along the fixed rod 304 through the connecting plate 14. At this time, the spring 13 is compressed. When the slider 303 moves down, it drives the limiting mechanism 304 through the brackets 7 on both sides. The positioning rod 8 moves downward, and the limiting rod 8 slides in the waist-shaped groove 9 at one end of the cavity 4 of the gripper 301. Due to the guiding effect of the waist-shaped groove 9, the gripper 301 rotates inward with the connecting rod 6 as the rotation point. One end of the movable groove 5 (with inclined surface one) gradually approaches the outer wall of the connecting pipe 2. When the gripper 301 continues to rotate until the inclined surface one is in contact with the inclined surface two of the protrusion 10 on the connecting rod 6, the inner end of the gripper 301 clamps the outer wall of the connecting pipe 2. At this time, the cooperation between the inclined surface one and the inclined surface two forms a mechanical self-locking, ensuring stable clamping force.

Claims

1. A printhead for an inkjet printer, comprising a printhead (1) and a connecting pipe (2), characterized in that, The nozzle (1) is equipped with a clamping device (3) for fixing the connecting pipe (2). The clamping device (3) includes a jaw (301), a mounting base (302), a slider (303), a fixing rod (304), and a limiting mechanism (305). The mounting base (302) is mounted on the nozzle (1), and the fixing rod (304) is mounted at the center of the mounting base (302). A plurality of jaws (301) are connected to the mounting base (302), and the jaws (301) are arranged in a ring. The slider (303) slides on the fixing rod (304). The jaws (301) are connected to the slider (303). The limiting mechanism (305) is installed on the slider (303) and the nozzle (1).

2. The printhead of a large-format printer according to claim 1, characterized in that, The mounting base (302) has a cavity (4) inside, the slider (303) is located inside the cavity (4), the mounting base (302) has a movable groove (5) inside, and the gripper (301) is located inside the movable groove (5).

3. The printhead of a large-format printer according to claim 2, characterized in that, A connecting rod (6) is fixedly connected to the mounting base (302), and the gripper (301) is rotatably connected to the connecting rod (6). A bracket (7) is provided on each side of the gripper (301), and the bracket (7) is fixedly connected to the slider (303). A limiting rod (8) is fixedly connected to the bracket (7). A waist-shaped groove (9) is provided on the gripper (301), and the limiting rod (8) slides in the waist-shaped groove (9).

4. The printhead of a large-format printer according to claim 1, characterized in that, One end of the gripper (301) is provided with an inclined surface, and a protrusion (10) is fixedly connected to the connecting pipe (2). One end of the protrusion (10) is provided with an inclined surface, and the inclined surface one and the inclined surface two cooperate with each other.

5. The printhead of a large-format printer according to claim 1, characterized in that, A positioning rod (11) is fixedly connected to the mounting base (302), and a positioning hole (12) that cooperates with the positioning rod (11) is provided on the connecting pipe (2).

6. The printhead of a large-format printer according to claim 5, characterized in that, A spring (13) is installed between the slider (303) and the mounting base (302), and the spring (13) is sleeved on the fixing rod (304).

7. The printhead of a large-format printer according to claim 6, characterized in that, The limiting mechanism (305) includes a connecting plate (14), a rotating block (15), a handle (16), and a locking block (17). One end of the connecting plate (14) is fixedly connected to the slider (303). The mounting base (302) has a sliding groove (18). The rotating block (15) is located in the sliding groove (18). One end of the rotating block (15) is rotatably connected to the other end of the connecting plate (14). The handle (16) is fixedly connected to the other end of the rotating block (15). The nozzle (1) is fixedly connected to the locking block (17).

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