Mechanism for mounting and adjusting spray heads of inkjet printer

[0039] A specific embodiment of the present invention will be described in detail below with reference to the drawings.

[0040] Such as Figure 2-5 As shown, the nozzle installation and adjustment mechanism of the inkjet printer of the present invention includes a bottom plate 1 and an adjustment mechanism 4. The bottom plate 1 is provided with nozzle mounting holes 11, 12, and both ends of the nozzle mounting hole 11 are provided with positioning cylindrical pins 111, 112. One end of the nozzles 2 and 3 is provided with a V-shaped positioning notch, and the other end is provided with an L-shaped positioning notch. The V-shaped and L-shaped notches of the nozzle 2 are respectively matched with the positioning cylindrical pins 111 and 112 provided on the bottom plate 1, and the nozzle 2 is fixedly installed at the nozzle installation hole 11; the nozzle 3 is installed at the through hole 61 of the mounting plate 6, and the nozzle 3 is matched with the V-shaped and L-shaped notches of the nozzle 3 through the positioning cylindrical pins 611, 612 on the mounting plate 6 3 Fixedly mounted on the mounting plate 6, the size of the mounting plate 6 is smaller than the nozzle mounting hole 12, so that the nozzle 3 can move with the mounting plate 6 at the nozzle mounting hole 12; the mounting plate 6 is connected with the adjusting mechanism 4 through the adjusting mechanism 4. The movement of the nozzle 3 is controlled to adjust the relative position between the nozzle heads 2 and 3 in the transverse direction and the longitudinal direction and the deflection angle between the nozzle heads 2 and 3. In this embodiment, only two nozzle mounting holes are provided on the bottom plate 1, and the number of nozzles and adjustment mechanisms on the bottom plate 1 can be selected according to actual needs. In this embodiment, a reinforcing plate 5 is also provided at the bottom of the bottom plate 1.

[0041] Such as image 3 , 6 As shown in, 7 and 10, a fixing block 41 is installed on the bottom plate 1, and the fixing block 41 is connected with the bottom plate 1 through the holes 413 and 414 on the fixing block 41, and the adjusting mechanism 4 is installed on the fixing block 41. The adjustment mechanism 4 includes a transverse adjustment device, a longitudinal adjustment device and a leveling device. The transverse adjustment device includes an adjustment block 42, a guide rail 411, a first adjustment differential head 426 and a first elastic pin 427. The guide rail 411 is set at the length of the fixed block 41 On one side of the direction, the adjusting block 42 is erected on the guide rail 411 through a sliding block 421, and can slide along the guide rail 411; the top of the fixed block 41 is provided with two pins 412, 415 in the longitudinal direction, and the adjusting block 42 passes through the two pins The through holes 425 corresponding to 412 and 415 are sleeved on the fixed block 41. There is a gap between the through holes 425 and the pins 412 and 415. A first adjusting differential head 426 and a first elastic pin are provided on both sides of the front end of the adjusting block 42 427. The first adjusting differential head 426 is pressed against the positioning cylinder pin 415 on the fixed block 41, and the first elastic pin 427 is pressed against the positioning cylinder 412 pin on the fixed block 41. When the first adjusting differential head 426 is adjusted When the first adjusting differential head 426 pushes the fixed block 41, the fixed block 41 is fixed and the adjusting block 42 slides relative to the fixed block 41, thereby driving the nozzle 3 connected with the leveling device to move, so that the nozzle 3 is in X The axial position is adjusted to ensure that the nozzle 3 and the nozzle 2 are connected end to end. When the first adjusting differential head 426 pushes the fixed block 41, the first elastic pin 427 always acts on the adjusting block 42 to make it move in the opposite direction. Therefore, when the position of the nozzle 3 on the X axis is adjusted excessively, Rotate the first adjusting differential head 426 in the reverse direction, and the nozzle 3 can automatically return to its position.

[0042] The top surface of the adjusting block 42 is provided with a first positioning post 423, a second positioning post 424 and a sliding groove 422 which are respectively connected to the longitudinal adjustment device and the leveling device, such as image 3 , 8 As shown in and 11, the longitudinal adjustment device includes a slider 43, a second adjusting differential head 433, and a second elastic pin 434. The slider 43 is provided with a through hole 431 corresponding to the first positioning post 423, passing through the first positioning post 423 is matched with the through hole 431 on the slider 43. The slider 43 is sleeved on the first positioning post 423 on the adjusting block 42 and is accommodated in the sliding groove 422. The size of the sliding groove 422 matches the slider 43, so that The slider 43 can only move along the chute 422 provided in the longitudinal direction of the adjustment block 42. There is a gap between the through hole 431 on the slider 43 and the first positioning post 423, so that the slider 43 and the adjustment block 42 can move relatively , The front end of the slider 43 is provided with a second adjusting differential head 433, the back end of the slider 45 is provided with a second elastic pin 434, the end surfaces of the second adjusting differential head 433 and the second elastic pin 434 are respectively pressed against The first positioning post 423 on the adjusting block 42 adjusts the second adjusting differential head 433. When the second adjusting differential head 433 pushes the adjusting block 42, the adjusting block 42 is fixed and the slider 43 moves along the sliding groove 422. Move longitudinally to adjust the longitudinal distance between the nozzle 3 and the nozzle 2.

[0043] Such as image 3 , 7 As shown in and 9, the leveling device includes a nozzle connecting plate 44, a third adjusting differential head 444 and a third elastic pin 445. The nozzle connecting plate 44 and the positioning pin 62 and the through hole 64 provided on the top surface of the mounting plate 6 pass through The nozzle connection plate 44 is provided with a through hole 442 corresponding to the second positioning post 424 and a through hole 441 corresponding to the positioning pin 432 on the top surface of the slider 43, which are fixedly connected by screws. The positioning pin 432 on the 43 is matched with the through hole 441 on the nozzle connecting plate 44. The nozzle connecting plate 44 is sleeved on the sliding block 43 and the adjusting block 42. A third adjusting differential head 444 is provided on both sides of the front end of the nozzle connecting plate 44. And the third elastic pin 445, the third adjusting differential head 444 and the third elastic pin 445 are respectively pressed against the two ends of the slider 43. When the third adjusting differential head 444 is adjusted, the nozzle connecting plate 44 can be wound around the slider. The positioning cylindrical pin 432 on the 43 rotates to realize the adjustment of the angular position of the nozzle 3 and ensure that the nozzle 3 and the nozzle 2 are completely parallel. Since the differential head 444 pushes the slider 43, the elastic pin 445 always acts on the slider 43 to make it reversely rotate. Therefore, when the position of the nozzle 3 is adjusted excessively, the differential head 444 is rotated reversely. , Nozzle 3 can rotate automatically. After adjusting the angular position of the nozzle 3, the locking screw 451 on the pressing block 45 penetrates the through hole 443 on the nozzle connecting plate and the through hole 429 on the adjusting block 42 to fix the connecting plate 44 on the adjusting block 42, thereby Fix the angular position of the nozzle 3. There is a disc spring on the locking screw 451, which can be self-locking. When adjusting the differential head, when it reaches a certain required position, loosen the differential head. Even if there is no locking screw, it will not be affected by the spring. The function makes the position of the nozzle change, that is, when adjusting, which position needs to be adjusted, which position can be reached, and the position will not change without external force. After adjusting the Y-axis and X-axis positions of the nozzle 3, the adjusting block 42 and the fixing block 41 are locked by the locking screw 428, thereby fixing the positions of the nozzle 3 in the Y-axis and X-axis.

[0044] The above-mentioned elastic pin that plays the role of returning can also be a spring. In the present invention, a positioning pin is arranged between the horizontal adjustment device, the longitudinal adjustment device and the leveling device, which can effectively prevent deviation from occurring during the locking process. Improve its adjustment accuracy. The mounting plate 6 of the movable nozzle 3 of the present invention is inserted into the mounting hole 12 of the bottom plate from bottom to top. The mounting plate 6 is also provided with a process hole 63 to facilitate the removal of the movable nozzle 3 when the nozzle fails, only the nozzle and its mounting plate need to be removed , The adjustment part on it basically does not move, when the nozzle is installed again, no adjustment is needed or only slight adjustment can meet the required requirements. While reducing labor intensity, it saves adjustment time and makes maintenance easier.

[0045] It should be pointed out that any modification made according to the specific embodiments of the present invention does not depart from the spirit of the present invention and the scope of the claims.