High-precision dispensing and laminating method and machine for shielding case

Abstract

The invention discloses a high-precision dispensing and laminating method and machine for a shielding case, and the method comprises the steps: carrying out the automatic alignment of a dispensing needle head, and grabbing a shielding case main body and a COC product; compensating the movement of the shielding case main body, and performing mapping position alignment by using the first mounting image and the second mounting image to obtain mapping position alignment information; a dispensing path image of the COC product is obtained, and dispensing is conducted on the COC product according to the dispensing path image; and after dispensing is completed, the shielding case body and the COC product are attached according to the mapping position alignment information, a shielding case mounting mode is obtained, and the next shielding case body is mounted according to the shielding case mounting mode. The automatic needle aligning mechanism is arranged, the dispensing needle head sensor is searched twice, the average value is calculated, the real-time space coordinates are obtained, calibration is carried out according to the deviation value, the dispensing precision is improved, the movement of the shielding cover is compensated, the attaching error caused by the error of a machine table is avoided, and the attaching precision is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of dispensing for shielding covers, and particularly relates to a high-precision dispensing and bonding method and machine for shielding covers. Background Art

[0002] When performing dispensing and mounting of COC products on a shielding cover, first, the shielding cover needs to be grasped. A vacuum chuck or a mechanical fixture of a dispensing machine is used to accurately pick up the shielding cover to ensure that the shielding cover does not shift, tilt or get damaged during the picking process. Then, the shielding cover is accurately aligned with the position where glue has been dispensed on the COC product. Then, the suction head or fixture of the mounter is slowly lowered, and the shielding cover is accurately placed on the COC product, and gently pressed or a certain pressure is applied to make the two closely fit.

[0003] During the mounting process, multiple complex operations need to be completed, which reduces the dispensing accuracy of the existing dispensing machine, thereby resulting in a decrease in product yield. Summary of the Invention

[0004] When the existing dispensing machine mounts a shielding cover, multiple complex operations need to be completed, and the mounting accuracy is low, resulting in a decrease in product yield.

[0005] In view of the above problems, a high-precision dispensing and bonding method and machine for shielding covers are proposed. By setting an automatic needle alignment mechanism, the dispensing needle sensor is searched twice and the average value is obtained to acquire the real-time spatial coordinates, and calibration is performed according to the offset value, thereby improving the dispensing accuracy. By compensating for the movement of the shielding cover, the bonding error caused by the error of the machine itself is avoided, and the bonding accuracy is improved. By setting the machine to automatically switch the shielding cover mounting mode, the problem of low efficiency and accuracy caused by manual switching is avoided, and the bonding accuracy is further improved.

[0006] In a first aspect, a high-precision dispensing and bonding method for a shielding cover includes:

[0007] Step 100: Automatically align the dispensing needle to obtain the current spatial coordinates of the dispensing needle. If the offset value of the current spatial coordinates is less than a specified threshold, grasp the shielding cover body and the COC product;

[0008] Step 200: Compensate for the movement of the shielding cover body, move the shielding cover body to the lower camera photographing position for photographing to obtain a first mounting image of the shielding cover body, move the COC product to the upper camera photographing position for photographing to obtain a second mounting image of the COC product, and perform mapping position alignment using the first mounting image and the second mounting image to obtain mapping position alignment information;

[0009] Step 300: Move the COC product to the upper camera photographing position again for photographing, obtain the dispensing path image of the COC product, and perform dispensing on the COC product according to the dispensing path image;

[0010] Step 400: After dispensing is completed, fit the shielding cover main body and the COC product according to the mapping position alignment information, obtain the shielding cover mounting mode, and mount the next shielding cover main body according to the shielding cover mounting mode.

[0011] Combined with the high-precision dispensing and fitting method of the shielding cover described in the first aspect of the present invention, in the first possible implementation manner, the step 100 includes:

[0012] Step 110: Move the dispensing needle head at the first speed for the first time, search for the position of the needle alignment sensor, and obtain the first spatial coordinates of the dispensing needle head when the needle alignment sensor is found;

[0013] Step 120: Move the dispensing needle head at the second speed again, search for the position of the needle alignment sensor, and obtain the second spatial coordinates of the dispensing needle head when the needle alignment sensor is found, where the second speed is less than the first speed;

[0014] Step 130: Calculate the average value of the first spatial coordinates and the second spatial coordinates to obtain the real-time spatial coordinates of the dispensing needle head.

[0015] Combined with the first possible implementation manner of the first aspect of the present invention, in the second possible implementation manner, the step 100 further includes:

[0016] Step 140: Compare the real-time spatial coordinates with the reference spatial coordinates;

[0017] Step 150: If the offset value between the real-time spatial coordinates and the reference spatial coordinates is less than the specified threshold, do not correct the dispensing needle head.

[0018] Combined with the first possible implementation manner of the first aspect of the present invention, in the third possible implementation manner, the step 100 further includes:

[0019] Step 160: Compare the real-time spatial coordinates with the reference spatial coordinates;

[0020] Step 170: If the offset value between the real-time spatial coordinates and the reference spatial coordinates is greater than the specified threshold, correct the dispensing needle head so that the offset value of the spatial coordinates of the dispensing needle head is less than the specified threshold.

[0021] Combined with the high-precision dispensing and fitting method of the shielding cover described in the first aspect of the present invention, in the fourth possible implementation manner, the step 200 includes:

[0022] Step 210: Obtain the movement compensation value of the shielding cover body in the x direction, the movement compensation value in the y direction, and the movement compensation value of the grasping position.

[0023] Step 220: Compensate the movement of the shielding cover body according to the movement compensation value in the x direction, the movement compensation value in the y direction, and the movement compensation value of the grasping position.

[0024] Combined with the high-precision dispensing and bonding method of the shielding cover described in the first aspect of the present invention, in the fifth possible implementation manner, the step 400 includes:

[0025] Step 410: If the shielding cover mounting mode is the upper shielding cover mode or the lower shielding cover mode, automatically keep the current parameter file and the dispensing template unchanged.

[0026] Step 420: If the shielding cover mounting mode is the switching mode between the two, automatically switch the current parameter file and the dispensing template to the parameter file and the dispensing template corresponding to the next shielding cover.

[0027] In the second aspect, a high-precision dispensing and bonding machine for a shielding cover adopts the high-precision dispensing and bonding method of the shielding cover described in the first aspect, and includes:

[0028] An automatic needle alignment mechanism for automatically aligning the dispensing needle according to the instruction of the control host and obtaining the current spatial coordinates of the dispensing needle.

[0029] A grasping mechanism for respectively grasping and moving the shielding cover body to a specified position according to the instruction of the control host.

[0030] A shielding cover feeding mechanism for moving the shielding cover body to a specified position according to the instruction of the control host.

[0031] A COC product feeding mechanism for moving the COC product to a specified position according to the instruction of the control host.

[0032] A first image acquisition device for acquiring a first mounting image of the shielding cover body according to the instruction of the control host.

[0033] A second image acquisition device for acquiring a second mounting image and a dispensing path image of the COC product according to the instruction of the control host.

[0034] A dispensing mechanism for dispensing the COC product according to the instruction of the control host and the dispensing path image.

[0035] Control host; used to output control instructions to each actuator according to the parameter file and the dispensing template, set the shielding cover mounting mode, perform mapping position alignment using the first mounting image and the second mounting image, and obtain mapping position alignment information

[0036] Combined with the high-precision dispensing and bonding machine for the shielding cover described in the second aspect of the present invention, in the first possible implementation manner, the automatic needle alignment mechanism includes:

[0037] Search device;

[0038] The control host includes a calculation module;

[0039] The search device is used to first move the dispensing needle head at a first speed to search for the position of the needle alignment sensor, obtain the first spatial coordinates of the dispensing needle head when the needle alignment sensor is found, then move the dispensing needle head at a second speed to search for the position of the needle alignment sensor, and obtain the second spatial coordinates of the dispensing needle head when the needle alignment sensor is found, where the second speed is less than the first speed;

[0040] The calculation module is used to calculate the average value of the first spatial coordinates and the second spatial coordinates to obtain the real-time spatial coordinates of the dispensing needle head.

[0041] Combined with the first possible implementation manner of the first aspect of the present invention, in the second possible implementation manner, the control host further includes:

[0042] The first comparison module compares the real-time spatial coordinates with the reference spatial coordinates. If the offset value between the real-time spatial coordinates and the reference spatial coordinates is less than the specified threshold, the dispensing needle head is not corrected.

[0043] Combined with the first possible implementation manner of the first aspect of the present invention, in the third possible implementation manner, the control host further includes:

[0044] The second comparison module is used to compare the real-time spatial coordinates with the reference spatial coordinates. If the offset value between the real-time spatial coordinates and the reference spatial coordinates is greater than the specified threshold, the dispensing needle head is corrected so that the offset value of the spatial coordinates of the dispensing needle head is less than the specified threshold.

[0045] Implementing the high-precision dispensing and bonding method and machine for the shielding cover of the present invention, by setting up an automatic needle alignment mechanism, searching for the dispensing needle head sensor twice and calculating the average value to obtain the real-time spatial coordinates, and calibrating according to the offset value, the dispensing accuracy is improved. By compensating for the movement of the shielding cover, the bonding error caused by the error of the machine itself is avoided, and the bonding accuracy is improved. By setting the machine to automatically switch the shielding cover mounting mode, the problem of low efficiency and accuracy caused by manual switching is avoided, and the bonding accuracy is further improved. Brief Description of the Drawings

[0046] To more clearly illustrate the solutions in this application, the following will give a brief introduction to the drawings required for the description of the embodiments of this application. Obviously, the drawings in the following description are some embodiments of this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0047] Figure 1 is a flowchart of an embodiment of a high-precision dispensing and bonding method for a shielding cover in this application;

[0048] Figure 2 is Figure 1 a flowchart of a specific implementation of step 100 in;

[0049] Figure 3 is Figure 2 a flowchart of a specific implementation after step 120 in;

[0050] Figure 4 is Figure 2 a flowchart of another specific implementation after step 120 in;

[0051] Figure 5 is Figure 1 a flowchart of a specific implementation of step 200 in;

[0052] Figure 6 is Figure 1 a flowchart of a specific implementation of step 400 in;

[0053] Figure 7 is a schematic diagram of the module structure of a high-precision dispensing and bonding device for a shielding cover in this application. Detailed Description of the Embodiments

[0054] The following will clearly and completely describe the technical solutions in the present invention in conjunction with the drawings in the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, other embodiments obtained by those of ordinary skill in the art without creative efforts all fall within the protection scope of the present invention.

[0055] Referring to "embodiment" herein means that the specific features, structures or characteristics described in conjunction with the embodiment may be included in at least one embodiment of this application. The phrase appearing in various positions in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment mutually exclusive with other embodiments. Those skilled in the art explicitly and implicitly understand that the embodiments described herein can be combined with other embodiments.

[0056] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this application belongs; the terms used in the description of the application herein are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" and any variations thereof in the description and claims of this application and the above drawings are intended to cover non-exclusive inclusion.

[0057] In addition, the terms "first" and "second" are used only for descriptive purposes and cannot be construed as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of this application, "a plurality of" means two or more unless otherwise specifically defined.

[0058] When the existing dispensing machine mounts the shielding cover, it needs to complete multiple complex operations, and the mounting accuracy is low, resulting in a decrease in the product yield.

[0059] In view of the above problems, a high-precision dispensing and bonding method and machine for a shielding cover are proposed.

[0060] In a first aspect, a high-precision dispensing and bonding method for a shielding cover, as Figure 1 , Figure 1 is a flowchart of an embodiment of a high-precision dispensing and bonding method for a shielding cover of this application; it includes:

[0061] Step 100: Automatically align the dispensing needle, obtain the current spatial coordinates of the dispensing needle, and if the offset value of the current spatial coordinates is less than the specified threshold, grasp the shielding cover body and the COC product.

[0062] In a preferred embodiment, as Figure 2 , Figure 2 is Figure 1 a flowchart of a specific implementation manner of step 100 in

[0063] In this embodiment, by searching for the position of the needle alignment sensor, the spatial coordinates of the dispensing needle head are determined. When the needle needs to be replaced or bent and needle alignment is required, after the machine is powered on, press the reset button to make the machine return to the initial posture, and then press the automatic needle alignment button to correct the deviation of the needle head. After the deviation is corrected, click the initialization button to enter the ready state and wait for manual feeding to be completed.

[0064] In a preferred embodiment, as Figure 3 , Figure 3 is Figure 2 a flowchart of a specific implementation after step 120 in

[0065] In a preferred embodiment, as Figure 4 , Figure 4 is Figure 2 a flowchart of another specific implementation after step 120 in

[0066] In this embodiment, the deviation value refers to the maximum allowable deviation value of the needle head relative to the needle head reference position in the XYZ directions after needle alignment is completed. This embodiment realizes the precise correction of the deviation of the dispensing position after the needle is accidentally distorted and the customer replaces the needle. In the prior art, when the needle of the machine is distorted, manual correction is required, which is time-consuming and laborious.

[0067] In this embodiment, the deviation value includes the maximum deviation value in the x direction (1.0 mm), the maximum deviation value in the y direction (1.0 mm), and the maximum deviation value in the z direction (2.0 mm). The first needle alignment speed can be 10. mm / s, and the second needle alignment speed can be 5.0 mm / s.

[0068] Step 200: Compensate for the movement of the shielding cover body, move the shielding cover body to the lower camera photographing position for photographing to obtain the first mounting image of the shielding cover body, move the COC product to the upper camera photographing position for photographing to obtain the second mounting image of the COC product, and use the first mounting image and the second mounting image for mapping position alignment to obtain the mapping position alignment information.

[0069] In a preferred embodiment, as Figure 5 , Figure 5 is Figure 1Flowchart of a specific implementation of step 200; step 200 includes: step 210, obtaining the movement compensation value in the x direction, the movement compensation value in the y direction, and the movement compensation value of the grasping position of the shield body; step 220, compensating for the movement of the shield body according to the movement compensation value in the x direction, the movement compensation value in the y direction, and the movement compensation value of the grasping position.

[0070] In a specific embodiment, the movement compensation value in the x direction can be 3.150 mm, the movement compensation value in the y direction is -0.150 mm, and the movement compensation value of the grasping position is -1.000 mm.

[0071] Step 300, move the COC product to the upper camera photographing position again for photographing, obtain the dispensing path image of the COC product, and perform dispensing on the COC product according to the dispensing path image.

[0072] In the implementation mode of the present application, the moving positions of the COC product feeding mechanism / flat x-axis motor include the manual feeding position, the COC vision detection position, the shield placement position, the dispensing position, the waste glue position, the needle alignment position, and the height measurement position. The data can be modified by double-clicking the corresponding position parameter box.

[0073] The moving positions of the COC product feeding mechanism / flat Y-axis motor include the manual feeding position, the COC vision detection position, the shield placement position, the dispensing position, the waste glue position, the needle alignment position, and the height measurement position. The data can be modified by double-clicking the corresponding position parameter box.

[0074] The moving positions of the Y-axis motor of the shield feeding mechanism include the feeding position and the grasping position. The data can be modified by double-clicking the corresponding position parameter box.

[0075] The moving positions of the X-axis motor of the shield feeding mechanism include the grasping position, the shield vision position, the waiting position, the height measurement position, the dispensing position, the shield placement position, the waste glue position, and the needle alignment position. The data can be modified by double-clicking the corresponding position parameter box.

[0076] The moving positions of the motor of the dispensing mechanism include the waiting position, the dispensing position, the waste glue position, and the needle alignment position. The data can be modified by double-clicking the corresponding position parameter box.

[0077] The moving positions of the motor of the shield grasping mechanism include the waiting position, the shield grasping position, the vision detection position, and the shield placement position. The data can be modified by double-clicking the corresponding position parameter box.

[0078] Step 400, after dispensing, fit the shield body and the COC product according to the mapped position alignment information, obtain the shield mounting mode, and mount the next shield body according to the shield mounting mode.

[0079] In a preferred embodiment, asFigure 6 , Figure 6 is Figure 1 a flowchart of a specific implementation manner of step 400; step 400 includes: step 410, if the shielding cover mounting mode is the upper shielding cover mode or the lower shielding cover mode, automatically keep the current parameter file and the dispensing template unchanged; step 420, if the shielding cover mounting mode is the switching mode between the two, automatically switch the current parameter file and the dispensing template to the parameter file and the dispensing template corresponding to the next shielding cover. By setting up an automatic needle alignment mechanism, searching for the dispensing needle sensor twice and taking the average value to obtain the real-time spatial coordinates, and calibrating according to the offset value, the dispensing accuracy is improved. By compensating for the movement of the shielding cover, the fitting error caused by the machine tool itself is avoided, and the fitting accuracy is improved. By setting the machine tool to automatically switch the shielding cover mounting mode, the problem of low efficiency and accuracy caused by manual switching is avoided, and the fitting accuracy is further improved.

[0080] In a second aspect, a high-precision dispensing and fitting machine tool for a shielding cover, such as Figure 7 , Figure 7 is a schematic module structure diagram of a high-precision dispensing and fitting device for a shielding cover of the present application. Adopting the high-precision dispensing and fitting method for a shielding cover in the first aspect, it includes: an automatic needle alignment mechanism for automatically aligning the dispensing needle according to the instruction of the control host to obtain the current spatial coordinates of the dispensing needle; a grasping mechanism for respectively grasping and moving the shielding cover body to a specified position according to the instruction of the control host; a shielding cover feeding mechanism for moving the shielding cover body to a specified position according to the instruction of the control host; a COC product feeding mechanism for moving the COC product to a specified position according to the instruction of the control host; a first image acquisition device (upward camera) for acquiring a first mounting image of the shielding cover body according to the instruction of the control host; a second image acquisition device (downward camera) for acquiring a second mounting image of the COC product and a dispensing path image according to the instruction of the control host; a dispensing mechanism for dispensing the COC product according to the instruction of the control host and the dispensing path image; a control host; for outputting control instructions to each actuator according to the parameter file and the dispensing template, setting the shielding cover mounting mode, and performing mapping position alignment by using the first mounting image and the second mounting image to obtain mapping position alignment information

[0081] Further, the automatic needle alignment mechanism includes a searching device; the control host includes a calculation module; the searching device is used to first move the dispensing needle at a first speed to search for the position of the needle alignment sensor and obtain the first spatial coordinates of the dispensing needle when the needle alignment sensor is found, and then move the dispensing needle at a second speed to search for the position of the needle alignment sensor and obtain the second spatial coordinates of the dispensing needle when the needle alignment sensor is found, where the second speed is less than the first speed; the calculation module is used to take the average value of the first spatial coordinates and the second spatial coordinates to obtain the real-time spatial coordinates of the dispensing needle.

[0082] Further, the control host further includes: a first comparison module that compares the real-time spatial coordinates with the reference spatial coordinates. If the offset value between the real-time spatial coordinates and the reference spatial coordinates is less than a specified threshold, the dispensing needle head is not corrected.

[0083] Further, the control host further includes: a second comparison module that is used to compare the real-time spatial coordinates with the reference spatial coordinates. If the offset value between the real-time spatial coordinates and the reference spatial coordinates is greater than a specified threshold, the dispensing needle head is corrected so that the offset value of the spatial coordinates of the dispensing needle head is less than the specified threshold.

[0084] Implementing a high-precision dispensing and bonding method and machine for a shielding cover according to the present invention, by setting up an automatic needle alignment mechanism, searching for the dispensing needle head sensor twice and taking the average value to obtain the real-time spatial coordinates, and performing calibration according to the offset value, the dispensing accuracy is improved. By compensating for the movement of the shielding cover, the bonding error caused by the error of the machine itself is avoided, and the bonding accuracy is improved. By setting the machine to automatically switch the shielding cover mounting mode, the problem of low efficiency and accuracy caused by manual switching is avoided, and the bonding accuracy is further improved.

[0085] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A high-precision glue dispensing method for a shielding cover, characterized by comprising: Step 100, automatically aligning the dispensing needle, obtaining the current spatial coordinates of the dispensing needle, and if the offset value of the current spatial coordinates is less than a specified threshold, grabbing the shielding cover body and the COC product; Step 200, compensating for the movement of the shield cover body, moving the shield cover body to the lower camera photographing position to take a photo, obtaining a first mounting image of the shield cover body, moving the COC product to the upper camera photographing position to take a photo, obtaining a second mounting image of the COC product, and using the first mounting image and the second mounting image to perform mapping position alignment to obtain mapping position alignment information; Step 300: Move the COC product to the upper camera photographing position again to take a photo, obtain a dispensing path image of the COC product, and dispense glue to the COC product according to the dispensing path image; Step 400: After the dispensing is completed, the shielding cover body and the COC product are bonded according to the mapping position alignment information, a shielding cover mounting mode is obtained, and the next shielding cover body is mounted according to the shielding cover mounting mode.

2. The high-precision glue dispensing method for the shielding cover according to claim 1, characterized in that: The step 100 comprises: Step 110, moving the dispensing needle at a first speed for the first time, searching for the position of the needle alignment sensor, and obtaining the first spatial coordinates of the dispensing needle when the needle alignment sensor is found; Step 120, moving the dispensing needle again at a second speed, searching for the needle alignment sensor position, and obtaining the second spatial coordinates of the dispensing needle when the needle alignment sensor is found, wherein the second speed is less than the first speed; Step 130, averaging the first spatial coordinate and the second spatial coordinate to obtain the real-time spatial coordinate of the dispensing needle.

3. The high-precision glue dispensing and bonding method of the shielding cover according to claim 2, characterized in that: The step 100 further includes: Step 140, comparing the real-time space coordinates with the reference space coordinates; Step 150: If the offset value between the real-time space coordinate and the reference space coordinate is smaller than a specified threshold, the dispensing needle is not calibrated.

4. The high-precision glue-dispensing bonding method for a shielding cover according to claim 2, characterized in that: The step 100 further includes: Step 160, comparing the real-time space coordinates with the reference space coordinates; Step 170: If the offset value between the real-time spatial coordinate and the reference spatial coordinate is greater than a specified threshold, the dispensing needle is calibrated to make the offset value of the spatial coordinate of the dispensing needle less than the specified threshold.

5. The high-precision glue dispensing and bonding method of a shielding cover according to claim 1, characterized in that: The step 200 comprises: Step 210, obtaining the movement compensation value of the shielding cover body in the x-direction, the movement compensation value in the y-direction, and the movement compensation value of the grabbing position; Step 220 : Compensate the movement of the shielding cover body according to the movement compensation value in the x direction, the movement compensation value in the y direction, and the movement compensation value of the grabbing position.

6. The high-precision glue dispensing bonding method of the shielding cover according to claim 1, characterized in that: The step 400 includes: Step 410: If the shielding cover mounting mode is the upper shielding cover mode or the lower shielding cover mode, the current parameter file and the dispensing template are automatically kept unchanged; Step 420: If the shield cover mounting mode is a switching mode between the two, the current parameter file and the dispensing template are automatically switched to the parameter file and the dispensing template corresponding to the next shield cover.

7. A high-precision glue dispensing and bonding machine for a shielding cover, using the high-precision glue dispensing and bonding method for a shielding cover according to any one of claims 1 to 6, characterized in that: include: An automatic needle alignment mechanism, used to automatically align the dispensing needle according to the command of the control host and obtain the current spatial coordinates of the dispensing needle; The grabbing mechanism is used to grab and move the shielding cover body to a designated position according to the command of the control host; The shielding cover feeding mechanism is used to move the shielding cover body to a specified position according to the instruction of the control host; COC product feeding mechanism, used to move COC products to designated positions according to the instructions of the control host; A first image acquisition device, used for acquiring a first mounting image of the shielding cover body according to an instruction of a control host; A second image acquisition device, used to acquire a second mounting image and a dispensing path image of the COC product according to an instruction of the control host; A dispensing mechanism, used for dispensing the COC product according to the instructions of the control host and the dispensing path image; Control host; used to output control instructions to each actuator according to the parameter file and the dispensing template, set the shield cover mounting mode, use the first mounting image and the second mounting image to perform mapping position alignment, and obtain mapping position alignment information.

8. The high-precision glue dispensing and bonding machine for the shielding cover according to claim 7, characterized in that: The automatic needle alignment mechanism comprises: Search device; The control host includes a computing module; The search device is used to first move the dispensing needle at a first speed, search for the position of the needle sensor, and obtain the first spatial coordinates of the dispensing needle when the needle sensor is found, and then move the dispensing needle at a second speed again, search for the position of the needle sensor, and obtain the second spatial coordinates of the dispensing needle when the needle sensor is found, wherein the second speed is less than the first speed; The calculation module is used to average the first spatial coordinate and the second spatial coordinate to obtain the real-time spatial coordinate of the dispensing needle.

9. The high-precision glue dispensing and bonding machine for the shielding cover according to claim 8, characterized in that: The control host also includes: The first comparison module compares the real-time space coordinates with the reference space coordinates. If the offset value between the real-time space coordinates and the reference space coordinates is less than a specified threshold, the dispensing needle is not corrected.

10. The high-precision glue dispensing and bonding machine for the shielding cover according to claim 8, characterized in that: The control host also includes: The second comparison module is used to compare the real-time spatial coordinates with the reference spatial coordinates. If the offset value between the real-time spatial coordinates and the reference spatial coordinates is greater than a specified threshold, the dispensing needle is corrected to make the offset value of the spatial coordinates of the dispensing needle less than the specified threshold.

Images