Laser detection device and method for ink-jet distance of ink-jet printing head

Abstract

The invention discloses a laser detection device and method for the ink-jet distance of an ink-jet printing head, and relates to the field of ink-jet printing, the laser detection device comprises a mounting frame, an adjusting pipe is fixedly connected to the mounting frame, an adjusting column is slidably connected in the adjusting pipe, and an adjusting block slidably connected with the adjusting pipe is fixedly connected to the outer surface of the adjusting column. According to the laser detection device and method for the ink-jet distance of the ink-jet printing head, the laser detection adjusting mechanism is matched with the adjusting driving mechanism, the ink-jet distance of the ink-jet printing head can be adjusted according to the height change of a jet-printed object, and the ink-jet distance of the ink-jet printing head can be adjusted according to the height change of the jet-printed object. The hydraulic adjusting mode that the distance between the printing head body and the surface of the object is accurately adjusted effectively reduces the influence of vibration and inertia of mechanical adjustment on adjustment of the printing head body, it is ensured that the position of the printing head body can be timely and stably adjusted according to the change of the distance of the object, and therefore the printing effect of the printing head body on the object is remarkably improved.

Description

TECHNICAL FIELD

[0001] The present application relates to inkjet printing technology, in particular to a laser detection device and method for inkjet distance of an inkjet printhead. BACKGROUND

[0002] In the field of inkjet printing technology, the distance control between the printhead body and the surface of the printed object is one of the key factors affecting the printing quality. A suitable inkjet distance can ensure that the ink droplets are accurately sprayed onto the surface of the object to form clear and uniform patterns or characters. However, an improper distance may cause a series of problems such as ink droplet splashing, pattern blurring, color unevenness, and seriously affect the printing effect.

[0003] In traditional inkjet printing equipment, the adjustment method for the distance between the printhead body and the surface of the object is relatively limited. Some equipment adopts a fixed distance setting, that is, the distance between the printhead body and the surface of the object is fixed after the equipment is installed and adjusted. However, in actual production process, the height of the printed object on the conveying line often varies. This fixed distance setting cannot adapt to the change of the object height, resulting in unstable printing quality. For example, when the object height increases, the distance between the printhead body and the surface of the object is too close, and the ink droplets may splash due to excessive spraying force. When the object height decreases, the distance between the printhead body and the surface of the object is too far, and the ink droplets may not accurately reach the surface of the object, causing pattern loss.

[0004] In order to solve the above problems, some equipment adopts a mechanical adjustment method to adjust the distance between the printhead body and the surface of the object. Common mechanical adjustment methods include manual adjustment screw, gear transmission, etc. Manual adjustment screw requires the operator to manually rotate the screw to change the position of the printhead body according to the change of the object height. This method not only has low adjustment efficiency, but also has difficulty in ensuring the adjustment accuracy, and is easily affected by the operator's experience and subjective factors. Although the gear transmission adjustment method improves the automation degree of adjustment to a certain extent, there are mechanical gaps and vibrations in the gear transmission process, which will interfere with the adjustment of the printhead body, resulting in unstable adjustment process, affecting the accuracy of the position of the printhead body, and further affecting the printing quality.

[0005] In addition, during the inkjet printing process, impurities and dust on the surface of the object also have adverse effects on the printing quality. These impurities and dust may adhere to the surface of the object, change the characteristics of the surface of the object, affect the adhesion and drying of the ink droplets, and cause defects in the pattern. At the same time, impurities and dust may also interfere with the measurement of the distance of the object by the laser detection device, making the detection result inaccurate, and further affecting the accuracy of the distance adjustment of the printhead body. However, most of the existing inkjet printing equipment lacks effective cleaning mechanism for impurities and dust on the surface of the object, and cannot timely remove the pollutants on the surface of the object, thereby limiting the further improvement of the printing quality.

[0006] In summary, the existing inkjet printing technology has many deficiencies in the adjustment of the inkjet distance of the printhead body, the cleaning of the surface of the object and the heat dissipation of the laser detection device, and an inkjet printing head inkjet distance detection device and method capable of accurately adjusting the distance between the printhead body and the surface of the object, effectively cleaning the impurities and dust on the surface of the object and having good heat dissipation function are urgently needed to improve the quality and stability of inkjet printing. SUMMARY

[0007] The purpose of the present application is to provide a laser detection device and method for the inkjet distance of an inkjet printhead to solve the above-mentioned deficiencies in the prior art.

[0008] In order to achieve the above-mentioned purpose, the present application provides the following technical scheme: a laser detection device for the inkjet distance of an inkjet printhead, comprising a mounting frame, a adjusting pipe fixedly connected to the mounting frame, an adjusting column slidably connected in the adjusting pipe, an adjusting block fixedly connected to the outer surface of the adjusting column and slidably connected with the adjusting pipe, and a printhead body fixedly connected to the bottom of the adjusting column through a connecting plate and a bolt.

[0009] The outer surface of the adjusting pipe is drivingly connected with a laser detection adjusting mechanism connected with the mounting frame, and the laser detection adjusting mechanism adjusts the distance between the printhead body and the surface of the printing object according to the height change of the printing object.

[0010] Further, the laser detection adjusting mechanism comprises two adjusting boxes fixedly connected with the mounting frame, the outer surface of each adjusting box is fixedly connected with a connecting pipe fixedly connected with the adjusting pipe, each adjusting box is rotatably connected with an adjusting screw rod, the screw directions of the two adjusting screw rods are opposite, the outer surface of the adjusting screw rod is threadedly connected with a transmission plate, the transmission plate is slidably connected with a guide rod fixedly connected with the adjusting box, and the top of the transmission plate is fixedly connected with an extrusion plate slidably connected with the adjusting box through a transmission rod.

[0011] The adjusting screw rod is drivingly connected with an adjusting drive mechanism connected with the mounting frame, and the adjusting drive mechanism is used to drive the adjusting screw rod to rotate.

[0012] Further, the adjusting drive mechanism comprises a transmission box fixedly connected with the adjusting box, the transmission box is rotatably connected with the adjusting screw rod, one side of the transmission box is fixedly connected with a servo motor, the output end of the servo motor is fixedly connected with a rotating shaft rotatably connected with the transmission box through a shaft coupling, the outer surface of the rotating shaft is fixedly sleeved with a first bevel gear, the outer surface of the first bevel gear is meshingly connected with a second bevel gear fixedly sleeved with the adjusting screw rod, the input end of the servo motor is electrically connected with a laser detection device body connected with the mounting frame, and the laser detection device body is fixedly connected with the mounting frame through a mounting mechanism.

[0013] Further, the installation mechanism comprises an installation frame fixedly connected with the mounting frame, a two-way threaded rod is threadedly connected in the installation frame, a transmission block is threadedly connected with the outer surface of the two-way threaded rod, a guide rod fixedly connected with the installation frame is slidably connected on the transmission block, a clamping box is fixedly connected to the bottom of the transmission block, a cleaning mechanism connected with the mounting frame is fixedly connected to one side of the clamping box, and the cleaning mechanism is used for cleaning the surface of the printed object.

[0014] Further, the cleaning mechanism comprises a first absorption pipe fixedly connected with the mounting frame, a second absorption pipe is fixedly connected to the bottom end of the first absorption pipe, a plurality of absorption covers are fixedly connected to the outer surface of the second absorption pipe, an absorption box is fixedly connected to the outer surface of the first absorption pipe through a pipeline, a fan is fixedly connected in the absorption box, a plurality of filter screens are fixedly connected in the absorption box, an exhaust pipe is fixedly connected to one side of the absorption box, and the exhaust pipe is connected with the clamping box.

[0015] Further, one end of the exhaust pipe is fixedly connected with a wind distribution pipe, a hose fixedly connected with the clamping box is fixedly connected to the outer surface of the wind distribution pipe, and a plurality of air blowing holes are formed in the outer surface of the clamping box.

[0016] Further, a rubber pad is fixedly connected to one side of the clamping box.

[0017] The method of the laser detection device for the ink jet distance of the ink jet print head comprises the following steps:

[0018] Step one, fix the mounting frame on the conveying line of the ink jet printing, install the print head body, and install the laser detection device body on the mounting frame;

[0019] Step two, adjust each device on the mounting frame to a stable working state;

[0020] Step three, start the device on the mounting frame and perform ink jet printing work.

[0021] Compared with the prior art, the laser detection device and method for the ink jet distance of the ink jet print head provided by the present application have the following beneficial effects:

[0022] (1) By cooperating with the laser detection adjustment mechanism and the adjustment drive mechanism, the distance between the print head body and the surface of the object can be accurately adjusted according to the height change of the printed object. When the distance between the object and the laser detection device body changes, the servo motor rotates forward and reverse under the control of the PLC program and accurately controls the angle. Through the rotating shaft and bevel gear transmission, the two adjustment threaded rods rotate in the opposite direction, driving the extrusion plate to move, and the hydraulic pressure is used to make the adjustment block move slowly and steadily, thereby driving the adjustment column and the print head body to move. This hydraulic adjustment method effectively reduces the impact of mechanical adjustment vibration and inertia on the adjustment of the print head body, ensuring that the print head body can adjust its position in a timely and stable manner according to the change in the distance of the object, thereby significantly improving the printing effect of the print head body on the object.

[0023] (2) The installation mechanism uses a two-way threaded rod to drive the transmission block and the clamping box, which can conveniently clamp and fix the main body of the laser detection device to achieve portable installation. The cleaning mechanism works through the fan to absorb and clean impurities and dust on the surface of the object through the absorption tube and the absorption cover to prevent impurities from affecting the laser detection accuracy and inkjet printing effect. At the same time, the inhaled dust is filtered through the filter plate to reduce air pollution. The filtered gas enters the clamping box through the exhaust pipe, the air distribution pipe and the hose, and is discharged from the blowing hole to blow heat to the surface of the laser detection device to reduce the impact of heat on it. The device integrates installation, cleaning and heat dissipation functions, which not only improves the printing quality but also extends the service life of the laser detection device body. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments described in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0025] Figure 1 This is a first stereoscopic diagram of the external structure of the present invention;

[0026] Figure 2 This is a second stereoscopic view of the external structure of the present invention;

[0027] Figure 3 This is a third perspective view of the external structure of the present invention;

[0028] Figure 4 This is a front view of the internal structure of the present invention;

[0029] Figure 5 For the present invention Figure 2 A magnified view of middle A;

[0030] Figure 6 For the present invention Figure 4 Magnified view of B.

[0031] Explanation of reference signs:

[0032] 1, mounting frame; 2, adjusting pipe; 3, adjusting column; 4, adjusting block; 5, print head body; 11, adjusting box; 12, connecting pipe; 13, adjusting threaded rod; 14, transmission plate; 15, extrusion plate; 21, transmission box; 22, servo motor; 23, rotating shaft; 24, first bevel gear; 25, second bevel gear; 26, laser detection device body; 31, mounting frame; 32, bidirectional threaded rod; 33, transmission block; 34, clamping box; 41, first absorption pipe; 42, second absorption pipe; 43, absorption cover; 44, absorption box; 45, fan; 46, filter screen plate; 47, exhaust pipe; 51, air distribution pipe; 52, hose. DETAILED DESCRIPTION

[0033] In order for those skilled in the art to better understand the technical solutions of the present application, the present application will be further described in detail below with reference to the drawings.

[0034] Example one

[0035] Please refer to Figures 1 to 6 As shown in the figure, the laser detection device for ink-jet printing head ink-jet distance includes a mounting frame 1, the mounting frame 1 is fixedly connected with an adjusting pipe 2, the adjusting pipe 2 is slidably connected with an adjusting column 3, the outer surface of the adjusting column 3 is fixedly connected with an adjusting block 4 which is slidably connected with the adjusting pipe 2, and the bottom of the adjusting column 3 is fixedly connected with a print head body 5 through a bolt and a connecting plate;

[0036] The outer surface of the adjusting pipe 2 is drivingly connected with a laser detection adjusting mechanism connected with the mounting frame 1, which adjusts the distance between the print head body 5 and the surface of the printing object according to the height change of the printing object.

[0037] The laser detection adjusting mechanism includes two adjusting boxes 11 fixedly connected with the mounting frame 1, the outer surface of the adjusting box 11 is fixedly connected with a connecting pipe 12 fixedly connected with the adjusting pipe 2, the two adjusting boxes 11 are rotatably connected with adjusting threaded rods 13, the two adjusting threaded rods 13 are oppositely threaded, the outer surface of the adjusting threaded rod 13 is threadedly connected with a transmission plate 14, the transmission plate 14 is slidably connected with a guide rod fixedly connected with the adjusting box 11, and the top of the transmission plate 14 is fixedly connected with an extrusion plate 15 slidably connected with the adjusting box 11 through a transmission rod;

[0038] The adjusting threaded rod 13 is drivingly connected with an adjusting drive mechanism connected with the mounting frame 1, which is used to drive the adjusting threaded rod 13 to rotate.

[0039] The adjusting drive mechanism includes a transmission box 21 fixedly connected to the adjusting box 11, the transmission box 21 is rotatably connected to the adjusting threaded rod 13, and a servo motor 22 is fixedly connected to one side of the transmission box 21. The servo motor 22 is controlled by a PLC programming program, and can control the servo motor 22 to rotate forward and backward and rotate at an angle. The output end of the servo motor 22 is fixedly connected to a rotating shaft 23 rotatably connected to the transmission box 21 through a coupling, and the outer surface of the rotating shaft 23 is fixedly sleeved with a first bevel gear 24, and the outer surface of the first bevel gear 24 is meshed with a second bevel gear 25 fixedly sleeved with the adjusting threaded rod 13. The input end of the servo motor 22 is electrically connected to a laser detection device body 26 connected to the mounting bracket 1. The laser detection device body 26 is a prior art and is mainly used to measure the distance change between the laser detection device and the object, so it will not be described in detail here. The laser detection device body 26 is fixedly connected to the mounting bracket 1 through a mounting mechanism.

[0040] By fixing the mounting bracket 1 on the conveyor line that requires inkjet printing, and then installing the laser detection device body 26 on the mounting mechanism, when the distance between the conveyed object and the laser detection device body 26 changes, it means that the printing distance between the print head body 5 and the object has changed. At this time, according to the change in the detected distance, the servo motor 22 is driven to rotate, and the servo motor 22 drives the rotating shaft 23 to rotate. The rotating shaft 23 drives the first bevel gear 24 to rotate, and the first bevel gear 24 drives the two second bevel gears 25 to rotate in opposite directions. When the detected distance becomes shorter, the servo motor 22 rotates forward, driving the upper adjusting threaded rod 13 to rotate forward, and driving the lower adjusting threaded rod 13 to rotate reversely. At this time, the upper adjusting threaded rod 13 drives the transmission plate 14 and the extrusion plate 15 to move upward, and the lower adjusting threaded rod 15 drives upward. The threaded rod 13 drives the transmission plate 14 and the extrusion plate 15 to move upward, and the extrusion plate 15 squeezes the liquid in the upper regulating box 11 into the regulating tube 2 through the connecting pipe 12. At the same time, the extrusion plate 15 in the lower regulating box 11 moves upward, and the space in the lower regulating box 11 is released, so that the regulating block 4 is slowly moved and adjusted under the action of hydraulic pressure, thereby driving the regulating block 4 to move and adjust stably. Then, according to the detected distance, the rotation angle and number of rotations of the servo motor 22 are controlled, and then the regulating block 4 drives the regulating column 3 to move downward, and the regulating column 3 drives the print head body 5 to move, so that the print head body 5 can be timely and stably adjusted according to the distance change of the object. At the same time, through the adjustment of the hydraulic pressure, the vibration and inertia of the mechanical adjustment on the adjustment of the print head body 5 are effectively reduced, and the printing effect of the print head body 5 on the object is further improved.

[0041] Example 2

[0042] Based on Example 1, please refer to Figure 2 、 Figure 4、 Figure 5 and Figure 6 As shown in the figure, the mounting mechanism comprises a mounting frame 31 fixedly connected with the mounting frame 1, a two-way threaded rod 32 threadedly connected in the mounting frame 31, a transmission block 33 threadedly fitted on the outer surface of the two-way threaded rod 32, a guide rod fixedly connected with the mounting frame 31 and slidably connected on the transmission block 33, a clamping box 34 fixedly connected at the bottom of the transmission block 33, and a cleaning mechanism fixedly connected with the mounting frame 1 at one side of the clamping box 34, which is used for cleaning the surface of the printed object.

[0043] The cleaning mechanism comprises a first absorption pipe 41 fixedly connected with the mounting frame 1, a second absorption pipe 42 fixedly connected at the bottom end of the first absorption pipe 41, a plurality of absorption covers 43 fixedly connected on the outer surface of the second absorption pipe 42, an absorption box 44 fixedly connected on the outer surface of the first absorption pipe 41 through a pipeline, a fan 45 fixedly connected in the absorption box 44, a plurality of filter screens 46 fixedly connected in the absorption box 44, and an exhaust pipe 47 fixedly connected at one side of the absorption box 44 and connected with the clamping box 34.

[0044] One end of the exhaust pipe 47 is fixedly connected with a wind distribution pipe 51, the outer surface of the wind distribution pipe 51 is fixedly connected with a hose 52 fixedly connected with the clamping box 34, a plurality of air blowing holes are formed on the outer surface of the clamping box 34, and a rubber pad is fixedly connected at one side of the clamping box 34.

[0045] By placing the laser detection device body 26 between the two clamping boxes 34, then rotating the two-way threaded rod 32, the two-way threaded rod 32 drives the two transmission blocks 33 and the two clamping boxes 34 to move closer to each other, and the two clamping boxes 34 clamp and fix the laser detection device body 26, achieving portable installation of the laser detection device body 26. During work, first, the fan 45 in the absorption box 44 is started, and then the absorption box 44 starts to suck air through the first absorption pipe 41 to the second absorption pipe 42, the second absorption pipe 42 absorbs and cleans the impurities and dust on the surface of the object through the absorption cover 43, preventing the impurities on the surface of the object from affecting the detection accuracy of the laser detection device body 26, and preventing the impurities and dust from affecting the subsequent inkjet printing of the object, further improving the effect of inkjet printing of the object. The inhaled dust is filtered through the filter screen 46, reducing the pollution of dust and impurities to the air, the filtered gas is discharged into the wind distribution pipe 51 through the exhaust pipe 47, then the wind distribution pipe 51 sends the wind into the clamping box 34 through the hose 52, and then the wind is discharged through the plurality of air blowing holes on the clamping box 34, the air blowing holes blow air on the surface of the laser detection device body 26 to achieve real-time heat dissipation of the surface of the laser detection device body 26, reducing the influence of heat on the laser detection device body 26, and further improving the service life of the laser detection device body 26.

[0046] The method of laser detection device for ink-jet printing head ink-jet distance comprises the following steps:

[0047] Step one, fix the installation frame 1 on the conveying line of ink-jet printing, and install the printing head body 5, and install the laser detection device body 26 on the installation frame 1;

[0048] Step two, adjust the equipment on the installation frame 1 to the stable working state;

[0049] Step three, start the device on the installation frame 1 to carry out ink-jet printing work.

[0050] Working principle: when in use, fix the installation frame 1 on the conveying line of ink-jet printing, then install the laser detection device body 26 on the installation mechanism, when the distance between the conveyed article and the laser detection device body 26 changes, it means that the printing distance between the printing head body 5 and the article changes, then according to the detected distance change, drive the servo motor 22 to rotate, the servo motor 22 drives the rotating shaft 23 to rotate, the rotating shaft 23 drives the first bevel gear 24 to rotate, the first bevel gear 24 drives the two second bevel gears 25 to rotate in opposite directions, when the detected distance shortens, the servo motor 22 rotates in the forward direction, drives the upper adjusting screw rod 13 to rotate in the forward direction, and drives the lower adjusting screw rod 13 to rotate in the reverse direction, at this time, the upper adjusting screw rod 13 drives the transmission plate 14 and the extrusion plate 15 to move upwards, the lower adjusting screw rod 13 drives the transmission plate 14 and the extrusion plate 15 to move upwards, the extrusion plate 15 extrudes the liquid in the upper adjusting box 11 to the adjusting pipe 2 through the connecting pipe 12, and at the same time, the extrusion plate 15 in the lower adjusting box 11 moves upwards, releases the space in the lower adjusting box 11, and the adjusting block 4 slowly moves under the action of hydraulic pressure, so that the adjusting block 4 moves stably, then according to the detected distance, control the rotation angle and rotation number of the servo motor 22, then the adjusting block 4 drives the adjusting column 3 to move downwards, and the adjusting column 3 drives the printing head body 5 to move, so that the printing head body 5 can be stably adjusted in time according to the distance change of the article, and at the same time, through the hydraulic adjustment, the influence of mechanical adjustment vibration and inertia on the adjustment of the printing head body 5 is effectively reduced, and the printing effect of the printing head body 5 on the article is further improved.

[0051] The above only describes certain exemplary embodiments of the present application by way of illustration, and it is needless to say that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present application. Therefore, the above drawings and description are illustrative in nature and should not be understood as limiting the scope of protection of the claims of the present application.

Claims

1. A laser detection device for inkjet print head inkjet distance, characterized in that: include: A mounting frame (1), wherein an adjustment tube (2) is fixedly connected to the mounting frame (1), an adjustment column (3) is slidably connected inside the adjustment tube (2), an adjustment block (4) slidably connected to the adjustment tube (2) is fixedly connected to the outer surface of the adjustment column (3), and the bottom of the adjustment column (3) is fixedly connected to a print head body (5) via a bolt and a connecting plate; The outer surface of the adjustment tube (2) is connected to a laser detection adjustment mechanism connected to the mounting frame (1), and the laser detection adjustment mechanism adjusts the distance between the print head body (5) and the surface of the printed object according to the height change of the printed object.

2. The laser detection device for inkjet print head inkjet distance according to claim 1, characterized in that: The laser detection adjustment mechanism comprises two adjustment boxes (11) fixedly connected to the mounting frame (1), the outer surfaces of the adjustment boxes (11) are fixedly connected to connecting pipes (12) fixedly connected to the adjustment pipe (2), the two adjustment boxes (11) are rotatably connected to adjustment threaded rods (13), the thread directions of the two adjustment threaded rods (13) are opposite, the outer surfaces of the adjustment threaded rods (13) are threadedly matched with transmission plates (14), the transmission plates (14) are slidably connected to guide rods fixedly connected to the adjustment boxes (11), and the top of the transmission plates (14) is fixedly connected to an extrusion plate (15) slidably connected to the adjustment boxes (11) through the transmission rods; The adjusting threaded rod (13) is transmission-connected to an adjusting drive mechanism connected to the mounting frame (1), and the adjusting drive mechanism is used to drive the adjusting threaded rod (13) to rotate.

3. The laser detection device for inkjet print head inkjet distance according to claim 2, characterized in that: The adjustment drive mechanism comprises a transmission box (21) fixedly connected to the adjustment box (11), the transmission box (21) being rotatably connected to the adjustment threaded rod (13), a servo motor (22) being fixedly connected to one side of the transmission box (21), an output end of the servo motor (22) being fixedly connected to a rotating shaft (23) rotatably connected to the transmission box (21) via a coupling, a first bevel gear (24) being fixedly sleeved on the outer surface of the rotating shaft (23), a second bevel gear (25) being fixedly sleeved on the outer surface of the first bevel gear (24), and an input end of the servo motor (22) being electrically connected to a laser detection device body (26) connected to the mounting frame (1), and the laser detection device body (26) being fixedly connected to the mounting frame (1) via a mounting mechanism.

4. The laser detection device for inkjet print head inkjet distance according to claim 3, characterized in that: The mounting mechanism comprises a mounting frame (31) fixedly connected to the mounting frame (1); the mounting frame (31) is internally threadedly connected to a bidirectional threaded rod (32); the outer surface of the bidirectional threaded rod (32) is threadedly matched with a transmission block (33); the transmission block (33) is slidably connected to a guide rod fixedly connected to the mounting frame (31); the bottom of the transmission block (33) is fixedly connected to a clamping box (34); one side of the clamping box (34) is fixedly connected to a cleaning mechanism connected to the mounting frame (1); the cleaning mechanism is used to clean the surface of the printed object.

5. The laser detection device for inkjet print head inkjet distance according to claim 4, characterized in that: The cleaning mechanism comprises a first absorption tube (41) fixedly connected to the mounting frame (1); the bottom end of the first absorption tube (41) is fixedly connected to a second absorption tube (42); the outer surface of the second absorption tube (42) is fixedly connected to a plurality of absorption covers (43); the outer surface of the first absorption tube (41) is fixedly connected to an absorption box (44) through a pipeline; a fan (45) is fixedly connected inside the absorption box (44); a plurality of filter screens (46) are fixedly connected inside the absorption box (44); an exhaust pipe (47) is fixedly connected to one side of the absorption box (44); and the exhaust pipe (47) is connected to the clamping box (34).

6. The laser detection device for inkjet print head inkjet distance according to claim 5, characterized in that: One end of the exhaust pipe (47) is fixedly connected to an air distribution pipe (51), the outer surface of the air distribution pipe (51) is fixedly connected to a hose (52) fixedly connected to the clamping box (34), and the outer surface of the clamping box (34) is provided with a plurality of blowing holes.

7. The laser detection device for inkjet print head inkjet distance according to claim 4, characterized in that: A rubber pad is fixedly connected to one side of the clamping box (34).

8. The method of the laser detection device for inkjet print head inkjet distance according to any one of claims 1 to 7, characterized in that: The following steps are involved: Step 1: Fix the mounting frame (1) on the inkjet printing conveyor line, install the print head body (5), and install the laser detection device body (26) on the mounting frame (1); Step 2: Adjust each device on the mounting frame (1) to adjust it to a stable working state; Step 3: Start the device on the mounting frame (1) to perform inkjet printing.

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