CN110694855A - Single-CCD-based dispensing needle correction method and device - Google Patents
Single-CCD-based dispensing needle correction method and device Download PDFInfo
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- CN110694855A CN110694855A CN201810752535.2A CN201810752535A CN110694855A CN 110694855 A CN110694855 A CN 110694855A CN 201810752535 A CN201810752535 A CN 201810752535A CN 110694855 A CN110694855 A CN 110694855A
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- dispensing
- needle head
- ccd
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C5/00—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work
- B05C5/02—Apparatus in which liquid or other fluent material is projected, poured or allowed to flow on to the surface of the work the liquid or other fluent material being discharged through an outlet orifice by pressure, e.g. from an outlet device in contact or almost in contact, with the work
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C—APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05C11/00—Component parts, details or accessories not specifically provided for in groups B05C1/00 - B05C9/00
- B05C11/10—Storage, supply or control of liquid or other fluent material; Recovery of excess liquid or other fluent material
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- Application Of Or Painting With Fluid Materials (AREA)
Abstract
The invention discloses a single CCD-based dispensing needle head correction method and a single CCD-based dispensing needle head correction device. The method comprises S1, collecting the initial XY coordinate value of the preset dispensing needle by CCD; s2: the CCD collects the real-time XY coordinate value of the glue needle head of the target point; s3: calculating the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value; s4: and compensating the correction value to the dispensing operation position in the dispensing operation process of the target point dispensing needle head. The device comprises a CCD, a control unit (2) and a driving unit. The beneficial effects are as follows: therefore, XY position correction can be performed on the replaced dispensing needle head with high precision and high efficiency, the time for correcting a new dispensing needle head is shortened, and the production efficiency is improved.
Description
Technical Field
The invention relates to a correction method and a correction device, in particular to a single-CCD-based dispensing needle head correction method and a single-CCD-based dispensing needle head correction device.
Background
With the progress of science and technology, the demand of the dispensing process in various industries is gradually changed to be more refined, which is represented by smaller point diameter and line diameter and higher requirements on the consistency of the width, thickness, edge resolution and the like of the dispensing adhesive tape, so that the precision of the dispensing equipment needs to be further improved. Meanwhile, in the scheme of dispensing equipment, each module needs efficient cooperation to improve dispensing efficiency. In the dispensing process, the dispensing needle head is periodically replaced, and the position of the dispensing needle head needs to be repositioned after the dispensing needle head is replaced. In the conventional method, the XY-direction calibration dispensing needle is mainly used to move the dispensing needle to the dispensing platform so that the dispensing needle and the dispensing platform maintain a certain dispensing height, the dispensing needle dispenses and moves the camera to a dispensing position, and the XY-direction compensation is realized by correcting the deviation between the central point of the camera and the dispensing point. In the operation process, due to the existence of errors in the contact dispensing process, when the needle head is periodically replaced, the repeated dependence on the dispensing correction can cause certain deviation of the dispensing needle head in the XY direction calibration, and the consistency of high-precision dispensing can not be realized; meanwhile, in the XY direction needle head correction of the traditional method, the step of dispensing needs to be repeated, the efficiency is low, and the requirement of high-efficiency dispensing cannot be met.
Disclosure of Invention
One of the technical problems to be solved by the present invention is to provide a single CCD-based dispensing needle correction method for XY position correction of a replaced dispensing needle with high accuracy and high efficiency, which comprises the following steps:
s1, collecting the initial XY coordinate value of the preset dispensing needle by the CCD;
s2: the CCD collects the real-time XY coordinate value of the glue needle head of the target point;
s3: calculating the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value;
s4: and compensating the correction value to the dispensing operation position in the dispensing operation process of the target point dispensing needle head.
In the method for correcting a dispensing needle head based on a single CCD, the step S4 includes:
s4.1: receiving and calculating the correction value to form a corresponding control signal;
s4.2: executing the control signal to drive the motor to rotate;
s4.3: and the motor adjusts the position of the target point glue needle head, so that the correction value is compensated to the glue dispensing operation position in the glue dispensing operation process of the target point glue needle head.
In the method for correcting a dispensing needle head based on a single CCD, the steps S2 and S3 further include step S2.1: and acquiring a distance H1 between the end part of the preset dispensing needle head and a correction contact switch in the Z-axis direction, acquiring a distance H2 between the end part of the target point dispensing needle head and the correction contact switch in the Z-axis direction, and compensating the height difference to the Z-axis height of the target point dispensing needle head in the dispensing operation process of the target point dispensing needle head if the height difference exists between H1 and H2.
In the method for correcting a dispensing needle head based on a single CCD, the step S1 is preceded by a step S0 of performing main camera static correction and X, Y direction pixel correction of the CCD.
The second technical problem to be solved by the present invention is to provide a single CCD-based dispensing needle correction device capable of performing XY position correction on a replaced dispensing needle with high accuracy and high efficiency, which comprises:
CCD: the system is used for collecting an initial XY coordinate value of a preset dispensing needle head or collecting a real-time XY coordinate value of a target dispensing needle head;
a control unit: the system is used for calculating the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value;
a drive unit: and the correction value is compensated to the dispensing operation position in the dispensing operation process of the target point dispensing needle head.
In the single CCD-based dispensing needle head correction device of the present invention, the driving unit includes:
a motion controller: the device is used for receiving and calculating the correction value to form a corresponding control signal;
a driver: for executing the control signal;
a motor: the driver drives the motor to rotate, and the motor is used for adjusting the position of the target point glue needle head, so that the correction value is compensated to the glue dispensing operation position in the glue dispensing operation process of the target point glue needle head.
In the single-CCD-based dispensing pinhead correction device of the invention, the single-CCD-based dispensing pinhead correction device further comprises a correction contact switch connected with the control unit.
In the single CCD-based dispensing needle head correction device, the control unit is an industrial personal computer.
The single CCD-based dispensing pinhead correction method and the single CCD-based dispensing pinhead correction device have the advantages that: after a new dispensing needle head (namely a target point dispensing needle head) is replaced, the CCD collects a real-time XY coordinate value of the target point dispensing needle head, the control unit calculates the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value, and the correction value is compensated to a dispensing operation position in the dispensing operation process of the target point dispensing needle head; therefore, XY position correction can be performed on the replaced dispensing needle head with high precision and high efficiency, the time for correcting a new dispensing needle head is shortened, and the production efficiency is improved.
Drawings
FIG. 1 is a schematic flow chart illustrating an embodiment of a single CCD-based method for calibrating a dispensing tip according to the present invention;
FIG. 2 is a block diagram of a single CCD-based dispensing needle calibration device according to an embodiment of the present invention;
in the figure:
1-CCD; 2-a control unit; 3-a motion controller; 4-a driver; 5-motor.
Detailed Description
In order that the objects, aspects and advantages of the invention will become more apparent, the various embodiments described hereinafter refer to the accompanying drawings which form a part hereof, and in which are shown by way of illustration various embodiments in which the invention may be practiced. It is to be understood that other embodiments may be utilized and structural and functional modifications may be made to the embodiments set forth herein without departing from the scope and spirit of the present invention.
As shown in fig. 1, the method for calibrating a dispensing needle based on a single CCD of this embodiment includes: single CCD means a single CCD, i.e. 1 CCD; a ccd (charge Coupled device) is a charge Coupled device image sensor; it is made of a semiconductor material with high light sensitivity, and can convert light into electric charge, and convert the electric charge into digital signal by means of A/D converter chip, and the digital signal is compressed and stored by flash memory or built-in hard disk card in the camera, so that it can easily transmit data to computer, and can modify image according to the requirements by means of computer processing means; the CCD of this embodiment includes an XY coordinate camera, an XY coordinate camera lens, an XY coordinate camera light source, and an XY light source mounting block.
The single-CCD-based dispensing pinhead correction method comprises the following steps:
s1, CCD collects the initial XY coordinate value of the preset dispensing needle, such as (X)1,Y1)；
S2: the CCD collects real-time XY coordinate values of the glue head of the target point, such as (X)2,Y2) The target point glue needle head is a new glue needle head to be replaced;
s3: calculating real-time XY coordinate values (X)2,Y2) With initial XY coordinate value (X)1,Y1) Forming a correction value;
s4: and compensating the correction value to the dispensing operation position in the dispensing operation process of the target point dispensing needle head.
Initial XY coordinate value (X)1,Y1) For example, the end point of a rectangle (the intersection point of adjacent length and width), during dispensing, if the dispensing track is the rectangle, the initial XY coordinate value (X) of the dispensing needle head is preset1,Y1) And dispensing along four sides of the rectangle to form a dispensing track with the same shape as the rectangle as a starting point. Replacing the preset dispensing needle head with a target dispensing needle head, and real-time XY coordinate value (X) of the target dispensing needle head after replacement2,Y2) If (X)2,Y2) Is a point outside the rectangle: if not (X)2,Y2) Is corrected by (X)2,Y2) Dispensing is carried out for the starting point, and the dispensing track dispensed at the moment does not accord with the rectangle; when the dispensing needle head is replaced periodically, the repeated dependence on the dispensing correction may cause a certain deviation of the dispensing needle head in the XY direction calibration, and the consistency of high-precision dispensing cannot be realized; meanwhile, the traditional method is used for correcting the XY direction needle headThe step of dispensing needs to be repeated, the efficiency is low, and the requirement of high-efficiency dispensing cannot be met. In this embodiment, the glue needle is at the target point by (X)2,Y2) In the process of dispensing operation as a starting point, the correction value is compensated to the position of dispensing operation, and the deviation in the X direction and the Y direction is supplemented in turn, so that the dispensing track dispensed by the target point dispensing needle head is consistent with the rectangle.
Further, step S4 includes:
s4.1: receiving and calculating a correction value to form a corresponding control signal;
s4.2: executing a control signal to drive the motor to rotate;
s4.3: the motor adjusts the position of the target point glue needle head, so that the correction value is compensated to the position of the glue dispensing operation in the process of carrying out glue dispensing operation on the target point glue needle head.
The step S2.1 is also included between the steps S2 and S3: acquiring a distance H1 between the end part of the preset dispensing needle head and the correction contact switch in the Z-axis direction, acquiring a distance H2 between the end part of the target dispensing needle head and the correction contact switch in the Z-axis direction, and compensating the height difference to the Z-axis height of the target dispensing needle head in the dispensing operation process of the target dispensing needle head if the height difference exists between H1 and H2. The height is set to be 0.5 mm, for example, and the significance of the height setting is that the target point glue needle head rises to a safe distance after touching the correction contact switch, so that the subsequent glue dispensing operation is facilitated; h1 is, for example, 2 mm, H2 is, for example, 5 mm, and the height difference between H1 and H2 is-3 mm, the height position of the target point glue head in the Z axis is recorded, so that the difference of-3 mm is compensated to the Z axis glue dispensing height during the actual glue dispensing operation. Of course, in some embodiments, the set height may also be 1 millimeter; h1 is, for example, 3 mm, H2 is, for example, 1 mm, and the height difference between H1 and H2 is 2 mm, the height position of the target point glue head in the Z axis is recorded, so that the difference of 2 mm is compensated to the Z axis glue dispensing height during the actual glue dispensing operation. Therefore, the Z-axis direction position correction can be carried out on the target point glue needle head, the distance between the end part of the new glue needle head and the correction contact switch is a certain value after the new glue needle head is replaced every time, the height stability of the end part of the new glue needle head can be guaranteed after the height compensation, the subsequent glue dispensing operation is facilitated, and the glue dispensing precision and the glue dispensing quality are improved. There is no height difference between H1 and H2, so the height of the target point glue needle in the Z-axis direction does not need to be adjusted.
Step S1 is preceded by step S0 of performing main camera static correction and X, Y direction pixel correction of the CCD.
And (3) static correction of the main camera: opening software for resetting, selecting a camera correction option in position correction, firstly clicking a 'main camera (static state)' button to correct a main camera pixel, moving the camera to a position where the scale of the caliper is most clear, clicking 'photographing', selecting a proper distance by using a rectangular frame tool box, inputting an actual distance, and clicking a 'correction' button.
X, Y directional pixel correction: clicking a button of a main camera (XY direction pinhead correction) to correct X, Y direction pixels, selecting a standard correction block for calibration, adjusting the camera to the clearest position of a pinhead in the correction process, clicking a rectangular frame to select a proper distance, inputting an actual distance, and clicking a correction button.
As shown in fig. 2, the single CCD-based dispensing tip calibration apparatus of the present embodiment includes:
CCD 1: the system is used for collecting an initial XY coordinate value of a preset dispensing needle head or collecting a real-time XY coordinate value of a target dispensing needle head;
the control unit 2: the control unit 2 is preferably an industrial personal computer and is used for calculating the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value;
a drive unit: the correction value is compensated to the position of the dispensing operation in the process of dispensing operation of the target point dispensing needle head.
Further, the driving unit includes:
a motion controller 3: for receiving and calculating correction values to form corresponding control signals
The driver 4: for executing the control signal;
a motor 5: the driver 4 drives the motor 5 to rotate, and the motor 5 is used for adjusting the position of the target point glue needle head, so that the correction value is compensated to the position of glue dispensing operation in the process of glue dispensing operation of the target point glue needle head.
The single CCD-based dispensing pinhead correction device further comprises a correction contact switch connected with the control unit 2.
The control unit 2 collects the distance H1 of the end part distance correction contact switch of the preset dispensing needle head in the Z-axis direction, the control unit 2 collects the distance H2 of the end part distance correction contact switch of the target dispensing needle head in the Z-axis direction, and the height difference exists between the H1 and the H2, so that the height difference is compensated to the Z-axis height of the target dispensing needle head in the dispensing operation process of the target dispensing needle head.
The single CCD-based dispensing needle correction method and device have the advantages that: after a new dispensing needle head (namely a target point dispensing needle head) is replaced, the CCD collects the real-time XY coordinate value of the target point dispensing needle head, the control unit calculates the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value, and the correction value is compensated to the dispensing operation position in the dispensing operation process of the target point dispensing needle head; therefore, XY position automatic correction can be performed on the new dispensing needle head with high precision and high efficiency, the time for correcting the new dispensing needle head is reduced, and the production efficiency is improved.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (8)
1. A single CCD-based dispensing needle calibration method is characterized by comprising the following steps:
s1, collecting the initial XY coordinate value of the preset dispensing needle by the CCD;
s2: the CCD collects the real-time XY coordinate value of the glue needle head of the target point;
s3: calculating the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value;
s4: and compensating the correction value to the dispensing operation position in the dispensing operation process of the target point dispensing needle head.
2. The single-CCD based dispensing tip calibration method according to claim 1, wherein the step S4 includes:
s4.1: receiving and calculating the correction value to form a corresponding control signal;
s4.2: executing the control signal to drive the motor to rotate;
s4.3: and the motor adjusts the position of the target point glue needle head, so that the correction value is compensated to the glue dispensing operation position in the glue dispensing operation process of the target point glue needle head.
3. The single-CCD-based dispensing tip calibration method according to claim 1 or 2, further comprising a step S2.1 between the steps S2 and S3: and acquiring a distance H1 between the end part of the preset dispensing needle head and a correction contact switch in the Z-axis direction, acquiring a distance H2 between the end part of the target point dispensing needle head and the correction contact switch in the Z-axis direction, and compensating the height difference to the Z-axis height of the target point dispensing needle head in the dispensing operation process of the target point dispensing needle head if the height difference exists between H1 and H2.
4. The single CCD-based needle-dispensing correction method of claim 1, wherein the step S1 is preceded by a step S0 of performing main camera static correction and X, Y direction pixel correction of the CCD.
5. The utility model provides a some adhesive needle correcting unit based on single CCD, its characterized in that includes:
CCD (1): the system is used for collecting an initial XY coordinate value of a preset dispensing needle head or collecting a real-time XY coordinate value of a target dispensing needle head;
control unit (2): the system is used for calculating the deviation distance between the real-time XY coordinate value and the initial XY coordinate value to form a correction value;
a drive unit: and the correction value is compensated to the dispensing operation position in the dispensing operation process of the target point dispensing needle head.
6. The single CCD-based dispensing tip calibration device according to claim 5, wherein the driving unit comprises:
motion controller (3): the device is used for receiving and calculating the correction value to form a corresponding control signal;
driver (4): for executing the control signal;
electric machine (5): the driver (4) drives the motor (5) to rotate, and the motor (5) is used for adjusting the position of the target point glue needle head, so that the correction value is compensated to the glue dispensing operation position in the glue dispensing operation process of the target point glue needle head.
7. The single-CCD-based dispensing tip calibration device according to claim 5, further comprising a calibration touch switch connected to the control unit (2).
8. The single CCD-based dispensing needle correction device according to claim 5, wherein the control unit (2) is an industrial personal computer.
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| CN201810752535.2A CN110694855A (en) | 2018-07-10 | 2018-07-10 | Single-CCD-based dispensing needle correction method and device |
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| CN201810752535.2A CN110694855A (en) | 2018-07-10 | 2018-07-10 | Single-CCD-based dispensing needle correction method and device |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111751373A (en) * | 2020-07-03 | 2020-10-09 | 深圳市轴心自控技术有限公司 | Glue hanging prevention detection method for glue dispensing equipment |
| CN112756194A (en) * | 2020-12-24 | 2021-05-07 | 联合汽车电子有限公司 | Dispensing needle position calibration system and calibration method thereof |
| CN114509035A (en) * | 2022-04-19 | 2022-05-17 | 江苏高凯精密流体技术股份有限公司 | Dispensing needle TCP measuring method and device |
| CN114798321A (en) * | 2022-03-29 | 2022-07-29 | 南通科瑞恩智能装备有限公司 | Three-dimensional calibration method, device, equipment and medium for needle head of dispenser |
| CN116351666A (en) * | 2023-04-24 | 2023-06-30 | 歌尔股份有限公司 | Dispensing method and dispensing equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111751373A (en) * | 2020-07-03 | 2020-10-09 | 深圳市轴心自控技术有限公司 | Glue hanging prevention detection method for glue dispensing equipment |
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| CN116351666B (en) * | 2023-04-24 | 2024-04-30 | 歌尔股份有限公司 | Dispensing method and dispensing equipment |
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Application publication date: 20200117 |