Display screen glue dam forming method and device applying ink-jet printing
Through inkjet printing technology, the glue dam is sprayed layer by layer on the display screen using vision modules and ijp nozzles, which solves the problems of complex mold design and difficulty in tolerance control, and realizes efficient and low-cost rubber dam forming, simplifying product replacement The molding process improves molding accuracy and production efficiency.
Patent Information
- Application Number
- CN202411019871.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-07-29
- Publication Date
- 2024-12-20
AI Technical Summary
In the existing display screen rubber dam forming process, the mold design is complex and the tolerance control is difficult, resulting in low molding accuracy and limited service life of the mold. Replacing products requires redesigning the processing mold, which increases production costs.
Using inkjet printing technology, data is collected through visual modules, three-dimensional models are established, sprayed spray paths, and glue dams are sprayed layer by layer with ijp nozzles, combined with UV light source curing, avoiding mold design and mold release processes, and realizing the actual product size. Perform molding.
It reduces production costs, improves molding accuracy and production efficiency, simplifies the product replacement process, avoids the impact of mold consistency on molding accuracy, and does not require frequent mold replacement.
Smart Images
Figure CN119169221A_ABST
Abstract
Description
Technical Field
[0001] The invention relates to the technical field of display screen production, and in particular to a display screen glue dam molding method and molding equipment using inkjet printing. Background Art
[0002] The display screen MODING process is completed by the mold spraying process. For example, the glue dam of the mobile phone display screen is formed by first processing the glue type in the mold, then pressing and spraying water with the product, and then removing from the mold after curing to form a glue dam 1. Figure 1 , Figure 2 As shown. Due to the shape tolerance of the product, the glue dam cast from the mold has a position deviation from the product. If the product is replaced, the mold needs to be redesigned and processed. Another point is that the mold tolerance control has an impact on the shape of the glue dam. After a single mold has been used for a certain period of time, the release layer is reduced and the mold needs to be re-coated with a release layer. The mold has a limited service life. After curing, some glue will remain in the mold during the release process, resulting in unqualified product glue shape. The residual glue in the mold also needs to be cleaned, resulting in a high cost of repeated use. Summary of the invention
[0003] In order to solve the above problems, the object of the present invention is to provide a display screen glue dam forming method and forming equipment using inkjet printing.
[0004] The present invention is implemented by the following method: A method for forming a display screen glue dam using inkjet printing, comprising the following steps: Step 1: Data collection: Use the visual module to collect data on the product that needs to be sprayed with glue dam to obtain point cloud data, and splice the obtained point cloud data to form a data point cloud model of the product that needs to be sprayed with glue dam; Step 2: Process the data and mesh the data point cloud model to complete the reverse modeling of the product that needs to be sprayed with glue dam, and generate a meshed three-dimensional information model of the product that needs to be sprayed with glue dam; Step 3: Establishing a three-dimensional model of the glue dam, calculating the specific spraying position and the contour height of the glue dam in the gridded three-dimensional information model, and establishing the three-dimensional model of the glue dam on the gridded three-dimensional information model according to the spraying position and the contour height of the glue dam obtained by the above calculation; Step 4: Calculate the spraying path, analyze and slice the three-dimensional model of the glue dam to obtain the graphic area of each layer, and calculate and plan the spraying path of each layer of slices; Step 5: spraying the glue dam. The ijp nozzle executes the spraying path to spray layer by layer on the product that needs to be sprayed with the glue dam to form the glue dam.
[0005] Preferably, in step 1, when collecting point cloud data information of the product that needs to be sprayed with glue dam, the visual module simultaneously scans and obtains the actual position information of the product, and calculates the position deviation data between the actual position information of the product that needs to be sprayed with glue dam and the standard placement position information.
[0006] Preferably, in step 4, when calculating and planning the spraying path, the spraying path is corrected in combination with the position deviation data of the product to obtain the actual spraying path; in step 5, the ijp nozzle performs the glue spraying dam action according to the actual spraying path.
[0007] Preferably, in step 1, before collecting point cloud data information of the product that needs to be sprayed with glue dam, the image of the standard product is first captured through a visual module to obtain the point cloud data of the standard product, the point cloud data of the standard product is spliced to form a data point cloud model of the standard product, and the point cloud model of the standard product is gridded to complete the reverse modeling of the standard product and generate a three-dimensional glue dam model of the standard product.
[0008] Preferably, in step 3, the three-dimensional glue dam model is corrected based on the three-dimensional glue dam model of the standard product to obtain the three-dimensional glue dam model of the actual spraying, and in step 4, the three-dimensional glue dam model of the actual spraying is analyzed and sliced.
[0009] Preferably, before spraying the glue dam in step 5, the surface of the product to be sprayed with the glue dam is cleaned to improve the adhesion of the glue.
[0010] Preferably, in step 5, the ijp nozzle performs trial spraying on the ink viewing device before performing glue dam spraying, and observes the flight trajectory of the ink droplets sprayed from the ijp nozzle through the high-speed camera of the ink viewing device, and automatically measures the speed and volume of the inkjet dots, thereby judging the matching state and stability between the control board voltage and pulse waveform of the ijp nozzle and the ink, so as to adjust the inkjet state of the ijp nozzle.
[0011] Preferably, in step 5, a UV light source is used to follow-cure the glue during the process of spraying the glue dam by the ijp nozzle, and the ijp nozzle is a multi-nozzle nozzle.
[0012] A display screen glue dam forming device comprises a multi-axis moving component, a visual module and a carrier for placing products, and an IJP nozzle installed on the multi-axis moving component. The device uses a display screen glue dam forming method using inkjet printing as described above to spray glue dams on products that require spraying glue dams.
[0013] Preferably, it also includes: an ink observation device, adjacent to the carrier, for observing the state of glue sprayed by the ijp nozzle; a plasma cleaning device, arranged on the multi-axis moving component, for cleaning the surface of the product; and a nozzle cleaning device, arranged under the multi-axis moving component, for cleaning the ijp nozzle.
[0014] The beneficial effects of the present invention are as follows: the present invention provides a method for forming a display screen glue dam using inkjet printing. Compared with the prior art, the present invention has at least the following technical effects: 1. Scan the product through a visual module, perform three-dimensional modeling and calculation to establish a glue dam model to be sprayed, slice the glue dam model to calculate the spraying path, and spray glue layer by layer by the ijp nozzle to print out the glue dam of the display screen. Compared with the traditional use of mold casting, this molding method does not need to design a mold, and can perform glue dam spray molding according to the actual size of the current product each time, which can effectively avoid the influence of product tolerance, and there is no influence of mold consistency on molding accuracy, which helps to reduce production costs. Product change only requires visual software to recalculate the contour, and then the software calculates the slice processing, without redesigning and processing the mold, and the change is simple, easy to use, and low cost. 2. Collect and generate a three-dimensional model of a standard product, which is used to correct the established three-dimensional model of the glue dam, which helps to improve the molding accuracy of the product glue dam. 3. Clean the product that needs to be sprayed with a glue dam before spraying, which can improve the adhesion of the product surface to the glue, so that the glue dam and the product fit more firmly. 4. Before spraying the glue dam, the ijp nozzle is tested first. The spraying status of the ijp nozzle is observed by the high-speed camera of the ink viewing device, so as to judge the matching status and stability between the control board voltage, pulse waveform and ink of the ijp nozzle, so as to adjust the inkjet status of the ijp nozzle in time and put it in the best ink supply state, which is helpful to improve the molding accuracy of the glue dam.
[0015] The present invention provides a display screen glue dam forming device. Compared with the prior art, the present invention has at least the following technical effects: 1. The display screen glue dam forming method is used to form the glue dam, and there is no need to use a mold to assist in casting the glue dam, thereby eliminating the mold design and manufacturing steps, and there is no need for demolding, etc., the production efficiency is significantly improved, and the production of different types of products only requires rescanning and calculating the contour of the product, the production line conversion is simple, and it helps to reduce equipment procurement costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0016] Figure 1 It is a schematic diagram of the glue dam structure of a flat display screen.
[0017] Figure 2 It is a schematic diagram of the glue dam structure of a curved display screen.
[0018] Figure 3 The present invention is a schematic flow chart of a method for forming a display screen glue dam by inkjet printing.
[0019] Figure 4 It is a structural schematic diagram of a display screen glue dam forming device of the present invention.
[0020] Explanation of the accompanying figures: 1. Glue dam; 2. Visual module; 3. IJP nozzle; 4. Multi-axis moving component; 5. Carrier; 6. Ink viewing device; 7. Plasma cleaning device; 8. Nozzle cleaning device. DETAILED DESCRIPTION
[0021] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.
[0022] See also Figures 1 to 4 A method for forming a display screen adhesive dam using inkjet printing comprises the following steps: Step 1: Data collection: collect data of the product that needs to be sprayed with glue dam through the visual module 2 to obtain point cloud data, and splice the obtained point cloud data to form a data point cloud model of the product that needs to be sprayed with glue dam; Step 2: Process the data and mesh the data point cloud model to complete the reverse modeling of the product that needs to be sprayed with glue dam, and generate a meshed three-dimensional information model of the product that needs to be sprayed with glue dam; Step 3: Establishing a three-dimensional model of the glue dam, calculating the specific spraying position and the contour height of the glue dam in the gridded three-dimensional information model, and establishing the three-dimensional model of the glue dam on the gridded three-dimensional information model according to the spraying position and the contour height of the glue dam obtained by the above calculation; Step 4: Calculate the spraying path, analyze and slice the three-dimensional model of the glue dam to obtain the graphic area of each layer, and calculate and plan the spraying path of each layer of slices; Step 5, spraying the glue dam, the ijp nozzle 3 executes the spraying path to spray layer by layer on the product that needs to be sprayed with the glue dam to form the glue dam. The product is scanned by the visual module 2, and a three-dimensional modeling calculation is performed to establish a glue dam model to be sprayed, and the glue dam model is sliced to calculate the spraying path. The ijp nozzle 3 sprays glue layer by layer to print out the glue dam of the display screen. Compared with the traditional use of mold casting, this molding method does not need to design a mold, and can be molded according to the actual size of the current product each time. The influence of product tolerance on the molding accuracy of the glue dam can be effectively avoided, and there is no influence of mold consistency on the molding accuracy, which helps to reduce the cost of use. The product change only needs the visual software to recalculate the contour, and then the software calculates the slice processing, without redesigning and processing the mold, and the change is simple, easy to use, and low cost. Preferably, the visual module 2 can be a 3D line scan camera, or a CCD camera, or a laser scanner, etc., but not limited to this. For example, if the height of the glue dam is 1.2mm, then a slice is performed every 0.01mm, for a total of 120 layers. Software is used for modeling and calculating slices. The preferred software may be Autodesk Fusion, or other modeling software, but it is not limited thereto. Ijp is inkjet printing technology, and ijp nozzle is an inkjet printing nozzle, which is usually a combined nozzle with multiple nozzles. In step 3, the specific spraying position and the contour height of the glue dam in the gridded three-dimensional information model are calculated, that is, according to the width of the glue dam required by the process, the distance between the glue dam and the edge of the product, and the height to be reached by the product after the glue dam is applied, and the specific spatial positions of the product to be sprayed are calculated according to the process requirements on the gridded three-dimensional information model of the product to be sprayed with the glue dam.
[0023] See also Figures 1 to 4Preferably, in step 1, when the visual module 2 collects the point cloud data information of the product that needs to be sprayed with glue dam, it also scans and obtains the actual position information of the product, and calculates the position deviation data of the actual position information of the product that needs to be sprayed with glue dam and the standard placement (i.e., the placement position of the standard product); in step 4, when calculating and planning the spraying path, the spraying path is corrected in combination with the position deviation data of the product that needs to be sprayed with glue dam to obtain the actual spraying path; in step 5, the ijp nozzle 3 performs the action of spraying glue dam according to the actual spraying path. It is helpful to improve the molding accuracy of the glue dam of the product (mainly correcting the X, Y axis and R axis directions, correcting XY is compensated by the mechanism Y axis and X axis, and the angle of the R axis is first image corrected by the software algorithm and then sent to the actuator (multi-axis moving component 4 and ijp nozzle 3) for angle compensation), and the three-dimensional coordinate data of the actual product is compared with the three-dimensional coordinate data of the standard product placement position, and the deviation data is obtained by comparison, and then corrected. The difference of the position deviation data is obtained by subtracting the three-dimensional coordinate data of each point from the three-dimensional coordinate data of the standard product, and the difference may be a positive number or a negative number. For example: the position information of point A of the standard product is recorded as point A0 (X0=50, Y0=80, Z0=100), and the position information of point A of the actual product is scanned and recorded as point A1 (X1=51, Y1=78, Z1=99). The actual deviation value is (X=1, Y=-2, Z=-1) when the two are subtracted. According to this information, the position of the nozzle at the spraying point can be adjusted (the nozzle X displacement plus one, the Y displacement minus two, the Z displacement minus one), and so on. Multiple points are obtained on the product to be sprayed, and the deviation data of multiple points are compared with the corresponding points of the standard placement position information of the standard product in turn. The deviation data of multiple points are corrected in turn, and the actual spraying path can be calculated and corrected. The standard placement position is obtained when the standard product is scanned by a 3D line scanning camera.
[0024] See also Figures 1 to 4Preferably, in step 1, before collecting the point cloud data information of the product that needs to be sprayed with glue dam, the standard product is first imaged through the visual module 2 (which can be a 3D line scan camera) to obtain the point cloud data of the standard product, the point cloud data of the standard product is spliced to form a data point cloud model of the standard product, and the point cloud model of the standard product is gridded to complete the reverse modeling of the standard product and generate a three-dimensional glue dam model of the standard product. In step 3, the three-dimensional model of the glue dam is corrected based on the three-dimensional glue dam model of the standard product to obtain the three-dimensional model of the glue dam actually sprayed, and in step 4, the three-dimensional model of the glue dam actually sprayed is analyzed and sliced. The three-dimensional model of the glue dam of the standard product is collected and generated, which is used to correct the established three-dimensional model of the glue dam, which helps to improve the molding accuracy of the product glue dam. Referring to the calculation and correction of the position deviation data between the actual position information and the standard placement position information of the above-mentioned product, the standard product is scanned by a 3D line scan camera, and the three-dimensional model of the standard product is obtained by the above-mentioned software for calculation and modeling.
[0025] See also Figures 1 to 4 Preferably, before spraying the glue dam in step 5, the surface of the product to be sprayed with the glue dam is cleaned to improve the adhesion of the glue, so that the glue dam and the product are more firmly attached.
[0026] See also Figures 1 to 4 Preferably, in step 5, the ijp nozzle 3 is first sprayed on the ink viewing device 6 before spraying the glue dam, and the flight trajectory of the ink droplets ejected from the ijp nozzle 3 is observed by the high-speed camera of the ink viewing device 6, and the speed and volume of the inkjet ink dots are automatically measured, so as to judge the matching state and stability between the control board voltage and pulse waveform of the ijp nozzle 3 and the ink, so as to adjust the inkjet state of the ijp nozzle 3. It is helpful to further improve the molding accuracy of the glue dam. Test judgment: When observing the flight trajectory of the ink droplets, check whether there are satellite points, tailing state, scattered spraying, and oblique spraying. When grayscale printing, observe whether several levels of grayscale ink droplets are added to the same ink droplet. For multi-row nozzle nozzles, observe whether the inkjet speed of the front and rear rows of nozzles is consistent. Whether the inkjet control board matches the nozzle and the ink. Whether there is an error in the inkjet control board data. By modifying the nozzle parameters such as nozzle voltage, pulse waveform, ignition frequency, etc., the ink droplet observation system analyzes the ink droplet state, thereby providing more suitable nozzle drive parameters for the printing device. The ink here is the glue.
[0027] See also Figures 1 to 4Preferably, in step 5, a UV light source is used to follow the curing of the glue during the process of spraying the glue dam with the ijp nozzle, and the ijp nozzle 3 is a multi-nozzle nozzle. In order to ensure that the shape of each layer of glue is stable and to avoid overflow affecting the overall appearance of the glue shape, a UV lamp is used for follow-up curing. Due to the thickness of the glue, multiple layers of printing are required to be repeated, and the change of the glue shape can be accurately controlled with the solidification. The purpose is to improve the control of the glue shape on the vertical surface and adapt to the special-shaped structure of the glue shape of the product (for example, the design and production of the mold for the glue dam of the curved screen is more difficult, so the effect of the present invention on the molding of the glue dam of the curved screen is better, which can save more production costs). Because the single nozzle and single-row nozzle have the following disadvantages: 1. The amount of glue is insufficient, and gaps and lines appear in the printed pattern; 2. After repeated stacking of this printing method, the flatness of the colloid surface is poor; 3. This phenomenon cannot be avoided during the actual debugging process, so the single nozzle spraying method is not feasible. Using double-column nozzles CD: 1. The amount of glue is significantly increased. From the effect of 10 repeated overlapping printings, jagged lines appear on the edge; 2. After 130 stackings, the appearance effect is basically satisfactory and the feasibility is high. Therefore, the glue dam spraying and forming can be carried out by using the method of synchronous spraying of multiple nozzles.
[0028] See also Figures 2 to 4 A display screen glue dam forming device comprises a multi-axis moving component 4, a visual module 2, a platform 5 for placing a product, and an ijp nozzle 3 mounted on the multi-axis moving component 4, and uses a display screen glue dam forming method using inkjet printing as described above to spray glue dams on products that need to be sprayed with glue dams. The ijp nozzle 3 is connected to an ink supply system.
[0029] See also Figure 4, preferably, it also includes: an ink viewing device 6, adjacent to the carrier 5, for observing the state of the glue sprayed by the ijp nozzle 3; a plasma cleaning device 7, arranged on the multi-axis moving component 4, for cleaning the surface of the product; a nozzle cleaning device 8, arranged under the multi-axis moving component 4, for cleaning the ijp nozzle 3. The UV light source is fixed to the multi-axis moving component 4, which can achieve follow-up curing. The ink viewing device 6, the plasma cleaning device 7, the ijp nozzle 3, the carrier 5 and the multi-axis moving component 4 and the nozzle cleaning device 8 are existing equipment and will not be described in detail. Plasma principle: Under a certain pressure, the radio frequency power supply generates high-energy disordered plasma in the vacuum cavity, and then the plasma bombards the surface of the cleaned product to achieve the purpose of cleaning. Plasma is a state of existence of matter. Usually, matter exists in three states: solid, liquid, and gas, but in some special cases, there is a fourth state, such as matter in the ionosphere in the earth's atmosphere. The structure of the plasma cleaning machine is mainly divided into three major parts, namely the control unit, the vacuum cavity and the vacuum pump. The following substances exist in the plasma state: electrons in high-speed motion, neutral atoms, molecules, and atomic clusters in an activated state, ionized atoms and molecules, unreacted molecules and atoms, etc., but the substance as a whole still maintains an electrically neutral state.
[0030] The present invention has the following working principle: First, a standard product is placed on the carrier 5 and scanned by the visual module 2, and then three-dimensional modeling is performed through the software to establish a three-dimensional glue dam model of the standard product; then, the product to be sprayed with the glue dam is placed, and the visual module 2 is used to scan and a gridded three-dimensional information model of the product is established by the software, and the specific spraying position of the gridded three-dimensional information model is calculated, and the position deviation data from the standard placement position is calculated, and then a three-dimensional model of the glue dam is established on the gridded three-dimensional model to form a virtual three-dimensional model of the completed glue dam; then, the difference between the three-dimensional glue dam model and the three-dimensional glue dam model is calculated by the software, and the three-dimensional glue dam model is modeled. Correction is performed to generate a three-dimensional model of the actual glue dam to be sprayed; then, the software slices and analyzes the three-dimensional model of the actual glue dam to be sprayed, obtains the graphic area of each layer, and calculates and plans the spraying path of each slice; before the ijp nozzle 3 is sprayed, the nozzle is cleaned in the nozzle cleaning device 8 as needed, and then a test spray is performed in the ink viewing device 6 to calibrate the parameters of the ijp nozzle 3, and the surface of the product to be sprayed with the glue dam is cleaned by the plasma cleaning device 7; then the ijp nozzle 3 sprays glue layer by layer according to the calculated spraying path, and follows the curing through the UV light source until the glue dam is generated.
[0031] It should be noted that the above is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions under the concept of the present invention belong to the protection scope of the present invention.
[0032] It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications without departing from the principle of the present invention should also be regarded as within the scope of protection of the present invention.
Claims
1. A method for forming a display screen adhesive dam using inkjet printing, characterized in that: The following steps are involved: Step 1: Data collection: collect data of products that need to be sprayed with glue dams through the visual module to obtain point cloud data, and splice the obtained point cloud data to form a data point cloud model of the products that need to be sprayed with glue dams; Step 2: Process the data, mesh the data point cloud model to complete the reverse modeling of the product that needs to be sprayed with glue dam, and generate a meshed three-dimensional information model of the product that needs to be sprayed with glue dam; Step 3: Establishing a three-dimensional model of the glue dam, calculating the specific spraying position and the contour height of the glue dam in the gridded three-dimensional information model, and establishing the three-dimensional model of the glue dam on the gridded three-dimensional information model according to the spraying position and the contour height of the glue dam obtained by the above calculation; Step 4: Calculate the spraying path, analyze and slice the three-dimensional model of the glue dam to obtain the graphic area of each layer, and calculate and plan the spraying path of each layer of slices; Step 5: spraying the glue dam. The ijp nozzle executes the spraying path to spray layer by layer on the product that needs to be sprayed with the glue dam to form the glue dam.
2. The method for forming a display screen glue dam by inkjet printing according to claim 1, characterized in that: In step 1, when the visual module collects the point cloud data information of the product that needs to be sprayed with glue dam, it also scans and obtains the actual position information of the product, and calculates the position deviation data between the actual position information of the product that needs to be sprayed with glue dam and the standard placement position information.
3. The method for forming a display screen glue dam by inkjet printing according to claim 2, characterized in that: In step 4, when calculating and planning the spraying path, the spraying path is corrected in combination with the position deviation data of the product that needs to be sprayed with glue dam to obtain the actual spraying path; in step 5, the ijp nozzle executes the action of spraying glue dam according to the actual spraying path.
4. The method for forming a display screen glue dam by inkjet printing according to claim 1, characterized in that: In step 1, before collecting point cloud data information of the product that needs to be sprayed with glue dam, first use the visual module to collect images of the standard product to obtain the point cloud data of the standard product, splice the point cloud data of the standard product to form a data point cloud model of the standard product, and grid the point cloud model of the standard product to complete the reverse modeling of the standard product and generate a three-dimensional glue dam model of the standard product.
5. The method for forming a display screen glue dam by inkjet printing according to claim 4, characterized in that: In step 3, the three-dimensional glue dam model is corrected based on the three-dimensional glue dam model of the standard product to obtain the three-dimensional glue dam model of the actual spraying, and in step 4, the three-dimensional glue dam model of the actual spraying is analyzed and sliced.
6. The method for forming a display screen glue dam using inkjet printing according to claim 1, characterized in that: Before spraying the glue dam in step 5, clean the surface of the product to be sprayed with the glue dam to improve the adhesion of the glue.
7. The method for forming a display screen glue dam by inkjet printing according to claim 1, characterized in that: In step 5, the ijp nozzle performs trial spraying on the ink viewing device before spraying the glue dam, and observes the flight trajectory of the ink droplets ejected from the ijp nozzle through the high-speed camera of the ink viewing device, and automatically measures the inkjet ink point speed and volume, so as to judge the matching state and stability between the control board voltage and pulse waveform of the ijp nozzle and the ink, so as to adjust the inkjet state of the ijp nozzle.
8. The method for forming a display screen glue dam by inkjet printing according to claim 1, characterized in that: In step 5, a UV light source is used to follow-cure the glue during the process of spraying the glue dam by the ijp nozzle, and the ijp nozzle is a multi-nozzle nozzle.
9. A display screen glue dam forming device, comprising a multi-axis moving component, a visual module and a carrier for placing products, and an ijp nozzle installed on the multi-axis moving component, characterized in that: The glue dam is sprayed on the product requiring spraying of the glue dam using the method for forming the display screen glue dam by inkjet printing as described in any one of claims 1 to 8.
10. The display screen glue dam forming device according to claim 9, characterized in that: Also includes: The ink viewing device is adjacent to the stage and is used to observe the glue state sprayed by the ijp nozzle; The plasma cleaning device is provided on the multi-axis moving assembly and is used to clean the surface of the product; The nozzle cleaning device is arranged under the multi-axis moving assembly and is used for cleaning the ijp nozzle.