Piezoelectric valve mechanism and piezoelectric valve glue output dynamic adjustment method

Abstract

The application discloses a piezoelectric valve mechanism and a piezoelectric valve glue output dynamic adjustment method. The piezoelectric valve mechanism comprises a controller, a piezoelectric valve body, an industrial computer and an IO bus. The controller is electrically connected with the piezoelectric valve body. A plurality of glue amount patterns are pre-stored in the controller. The industrial computer is connected with the controller through the IO bus to establish an IO communication connection. The industrial computer can send a trigger signal to the controller to trigger the start-stop control of the piezoelectric valve body by the controller. The industrial computer can also send a pattern selection signal to the controller to control the controller to call any glue amount pattern, so that the piezoelectric valve body executes the glue dispensing action corresponding to the current glue amount pattern. The application does not require the industrial computer to process an analog signal, can respond faster and save an analog output, and dynamically adjusts the glue amount pattern for the glue dispensing action of each glue dispensing point, effectively realizing the precise control of the glue output of each glue dispensing point.

Description

Technical Field

[0001] This invention relates to the field of dynamic dispensing technology, and more particularly to a piezoelectric valve mechanism and a method for dynamically adjusting the dispensing volume of the piezoelectric valve. Background Technology

[0002] Due to the emerging technology of DLED dispensing, multiple dispensing lines may intersect during dispensing. If the dispensing volume remains constant when drawing the lines, the amount of adhesive at the intersections will be significantly more than elsewhere. Current solutions use an analog signal to instruct the controller to adjust the interval time proportionally to regulate the adhesive volume. However, this method only adjusts the distance between two dispensing points, not the amount of adhesive at a single dispensing point, resulting in uneven adhesive lines. Furthermore, it requires an analog signal from the industrial control computer, increasing costs. Summary of the Invention

[0003] The purpose of this invention is to provide a piezoelectric valve mechanism and a method for dynamically adjusting the dispensing volume of the piezoelectric valve. The controller pre-stores multiple dispensing volume patterns, and an industrial control computer establishes an I / O communication connection with the controller via an I / O bus. The industrial control computer triggers the controller to control the start and stop of the piezoelectric valve body and calls any dispensing volume pattern, thereby controlling the piezoelectric valve body to perform the dispensing action corresponding to the current dispensing volume pattern. On the one hand, it eliminates the need for the industrial control computer to process analog signals, allowing for faster response and saving one analog output channel; on the other hand, by dynamically adjusting the dispensing volume pattern to dynamically adjust the dispensing action for each dispensing point, it effectively achieves precise control of the dispensing volume at each dispensing point.

[0004] To achieve the above objectives, this invention discloses a piezoelectric valve mechanism, comprising a controller, a piezoelectric valve body, an industrial computer, and an I / O bus. The controller is electrically connected to the piezoelectric valve body. The controller pre-stores multiple dispensing patterns. The controller has a first I / O interface, and the industrial computer has a second I / O interface. One end of the I / O bus is connected to the first I / O interface, and the other end is connected to the second I / O interface. The industrial computer establishes an I / O communication connection with the controller through the I / O bus. The industrial computer can send a trigger signal to the controller to trigger the controller to control the start and stop of the piezoelectric valve body. The industrial computer can also send a pattern selection signal to the controller to control the controller to call any dispensing pattern, thereby controlling the piezoelectric valve body to perform the dispensing action corresponding to the current dispensing pattern.

[0005] Preferably, the industrial control computer can also adjust the glue quantity parameters for each glue quantity pattern.

[0006] Specifically, the glue quantity parameters include the impact pin stroke parameter, the interval time parameter, the descent time parameter, the glue dispensing time parameter, and the rise time parameter.

[0007] Accordingly, the present invention also discloses a method for dynamically adjusting the dispensing amount of a piezoelectric valve, applied to the piezoelectric valve mechanism described above. The method for dynamically adjusting the dispensing amount of the piezoelectric valve includes the following steps:

[0008] S1. Send a mode selection signal to the controller via the industrial control computer;

[0009] S2. The controller loads the corresponding glue quantity pattern according to the current style selection signal;

[0010] S3. Send a trigger signal to the controller via the industrial control computer;

[0011] S4. The controller drives the piezoelectric valve body to perform the dispensing action corresponding to the current glue quantity pattern according to the current trigger signal, so as to complete the dispensing operation on the current glue point.

[0012] Preferably, the method for dynamically adjusting the dispensing amount of the piezoelectric valve further includes:

[0013] S5. After completing the dispensing operation on the current dispensing point, a pause trigger signal is sent to the controller via the industrial control computer;

[0014] S6. The controller pauses the driving of the piezoelectric valve body according to the current pause trigger signal;

[0015] S7. Repeat steps S1 to S6 until the dispensing operation for all points to be dispensed is completed.

[0016] Preferably, the adhesive dot to be applied is the intersection of two adhesive lines.

[0017] Preferably, the glue amount pattern is selected manually to match the glue dots to be applied.

[0018] Preferably, an image recognition algorithm is used to automatically select the glue amount pattern that is suitable for the glue dots to be applied.

[0019] Accordingly, the present invention also discloses a computer-readable storage medium for storing a computer program, which, when executed by a processor, implements the piezoelectric valve dispensing dynamic adjustment method as described above.

[0020] Compared with the prior art, the controller of the present invention has multiple glue quantity patterns pre-stored in its internal storage, and the industrial control computer establishes an IO communication connection with the controller through the IO bus. The industrial control computer triggers the controller to start and stop the piezoelectric valve body and calls any glue quantity pattern, thereby controlling the piezoelectric valve body to perform the dispensing action corresponding to the current glue quantity pattern. On the one hand, it does not require the industrial control computer to process analog signals, which can respond faster and save one analog output. On the other hand, it can dynamically adjust the glue quantity pattern to dynamically adjust the dispensing action for each glue point, effectively achieving precise control of the glue quantity dispensing at each glue point. Attached Figure Description

[0021] Figure 1 This is a flowchart of the dynamic adjustment method for the dispensing amount of the piezoelectric valve according to the present invention;

[0022] Figure 2 This is a schematic diagram of the piezoelectric valve mechanism of the present invention;

[0023] Figure 3 This is a schematic diagram showing the relationship between the impact pin stroke parameters, descent time parameters, glue dispensing time parameters, and rise time parameters of the present invention.

[0024] Figure 4 This is a schematic diagram of the structure of the adhesive dots to be applied according to the present invention. Detailed Implementation

[0025] To illustrate the technical content, structural features, objectives, and effects of the present invention in detail, the following description is provided in conjunction with the embodiments and accompanying drawings.

[0026] Please see Figures 1-4 As shown, the dynamic dispensing method for the piezoelectric valve in this embodiment is applied to a piezoelectric valve mechanism, which includes a controller 1, a piezoelectric valve body 2, an industrial computer 3, and an I / O bus 4. The controller 1 is electrically connected to the piezoelectric valve body 2. Multiple dispensing patterns are pre-stored in the controller 1. The controller 1 has a first I / O interface 11, and the industrial computer 3 has a second I / O interface 31. One end of the I / O bus 4 is connected to the first I / O interface 11, and the other end is connected to the second I / O interface 31. The industrial computer 3 establishes an I / O communication connection with the controller 1 through the I / O bus 4. It can be understood that the I / O communication connection is a communication connection method that transmits specific information by establishing high and low voltage levels.

[0027] The industrial control computer 3 can send a trigger signal to the controller 1 to trigger the controller 1 to control the start and stop of the piezoelectric valve body 2. The industrial control computer 3 can also send a style selection signal to the controller 1 to control the controller 1 to call any glue quantity style, thereby controlling the piezoelectric valve body 2 to perform the dispensing action corresponding to the current glue quantity style.

[0028] Preferably, the industrial control computer 3 can also adjust the glue quantity parameters for each glue quantity pattern.

[0029] Specifically, the glue quantity parameters include the impact pin stroke parameter, the interval time parameter, the descent time parameter, the glue dispensing time parameter, and the rise time parameter.

[0030] It is understood that the parameters of the firing pin stroke, interval time, descent time, dispensing time, and rise time in each glue quantity pattern can be independently modified and adjusted. This invention allows for the adjustment of one or more of these parameters after loading the glue quantity pattern, making the glue quantity pattern more suitable for the current glue point 51. Of course, a new glue quantity pattern can also be created after parameter adjustment for subsequent use.

[0031] The parameters of the firing pin stroke, intermittent time, descent time, dispensing time, and rise time are important parameters for the dispensing volume of the piezoelectric valve. The parameters that actually affect the dispensing volume at a single point are the firing pin stroke, descent time, dispensing time, and rise time. In other preferred methods, only these four parameters can be modified; these will not be elaborated upon here. Figure 4 A schematic diagram showing the relationship between the impact pin stroke parameters, descent time parameters, dispensing time parameters, and rise time parameters is presented.

[0032] The method for dynamically adjusting the dispensing amount of the piezoelectric valve includes the following steps:

[0033] S1. Send a pattern selection signal to controller 1 via industrial computer 3;

[0034] S2. The controller 1 loads the corresponding glue quantity pattern according to the current style selection signal;

[0035] S3. A trigger signal is sent to the controller 1 via the industrial control computer 3;

[0036] S4. The controller 1 drives the piezoelectric valve body 2 to perform the dispensing action corresponding to the current glue quantity pattern according to the current trigger signal, so as to complete the dispensing operation on the current glue point 51.

[0037] Preferably, the method for dynamically adjusting the dispensing amount of the piezoelectric valve further includes:

[0038] S5. After completing the dispensing operation on the current dispensing point 51, a pause trigger signal is sent to the controller 1 through the industrial control computer 3.

[0039] S6. The controller 1 pauses the driving of the piezoelectric valve body 2 according to the current pause trigger signal;

[0040] S7. Repeat steps S1 to S6 until the dispensing operation for all points 51 to be dispensed is completed.

[0041] Preferably, the glue point 51 to be applied is the intersection of two glue lines 5. Figure 4A schematic diagram is shown of the adhesive dots 51 formed by the intersection of multiple dispensing lines 5.

[0042] Preferably, manually selecting the glue amount pattern that is suitable for the glue dots 51 is suitable for situations where the number of glue dots 51 is small.

[0043] Preferably, the method of automatically selecting the glue amount pattern that is suitable for the glue dots 51 to be applied by the image recognition algorithm is suitable for situations where there are a large number of glue dots 51 to be applied.

[0044] Combination Figures 1-4 The controller 1 of this invention has multiple glue quantity patterns pre-stored, and the industrial control computer 3 establishes an IO communication connection with the controller 1 through the IO bus 4. The industrial control computer 3 triggers the controller 1 to control the start and stop of the piezoelectric valve body 2, and controls the controller 1 to call any glue quantity pattern, thereby controlling the piezoelectric valve body 2 to perform the dispensing action corresponding to the current glue quantity pattern. On the one hand, it does not require the industrial control computer 3 to process analog signals, which can respond faster and save one analog output. On the other hand, it can dynamically adjust the glue quantity pattern to dynamically adjust the dispensing action for each glue point 51 to be dispensed, effectively realizing precise control of the glue dispensing amount of each glue point 51 to be dispensed.

[0045] The above-disclosed embodiments are merely preferred embodiments of the present invention and should not be construed as limiting the scope of the present invention. Therefore, any equivalent variations made in accordance with the claims of the present invention are still within the scope of the present invention.

Claims

1. A piezoelectric valve mechanism, characterized in that: The device includes a controller, a piezoelectric valve body, an industrial computer, and an I / O bus. The controller is electrically connected to the piezoelectric valve body. The controller has multiple glue dispensing patterns pre-stored within it. The controller has a first I / O interface, and the industrial computer has a second I / O interface. One end of the I / O bus is connected to the first I / O interface, and the other end is connected to the second I / O interface. The industrial computer establishes an I / O communication connection with the controller through the I / O bus. The industrial computer can send a trigger signal to the controller to trigger the controller to start and stop the piezoelectric valve body. The industrial computer can also send a pattern selection signal to the controller to control the controller to call any glue dispensing pattern, thereby controlling the piezoelectric valve body to perform the dispensing action corresponding to the current glue dispensing pattern. The industrial control computer can also adjust the glue quantity parameters for each glue quantity pattern; The glue quantity parameters include the impact pin stroke parameter, the interval time parameter, the descent time parameter, the glue dispensing time parameter, and the rise time parameter.

2. A method for dynamically adjusting the dispensing amount of a piezoelectric valve, applied to the piezoelectric valve mechanism as described in claim 1, characterized in that, The method for dynamically adjusting the dispensing amount of the piezoelectric valve includes the following steps: S1. Send a mode selection signal to the controller via the industrial control computer; S2. The controller loads the corresponding glue quantity pattern according to the current style selection signal; S3. Send a trigger signal to the controller via the industrial control computer; S4. The controller drives the piezoelectric valve body to perform the dispensing action corresponding to the current glue quantity pattern according to the current trigger signal, so as to complete the dispensing operation on the current glue point.

3. The method for dynamically adjusting the dispensing amount of the piezoelectric valve as described in claim 2, characterized in that, The method for dynamically adjusting the dispensing amount of the piezoelectric valve further includes: S5. After completing the dispensing operation on the current dispensing point, a pause trigger signal is sent to the controller via the industrial control computer; S6. The controller pauses the driving of the piezoelectric valve body according to the current pause trigger signal; S7. Repeat steps S1 to S6 until the dispensing operation for all points to be dispensed is completed.

4. The method for dynamically adjusting the dispensing amount of the piezoelectric valve as described in claim 2, characterized in that, The glue dot to be applied is the intersection of two glue lines.

5. The method for dynamically adjusting the dispensing amount of the piezoelectric valve as described in claim 2, characterized in that, The amount of adhesive used is manually selected to match the amount of adhesive to be applied.

6. The method for dynamically adjusting the dispensing amount of the piezoelectric valve as described in claim 2, characterized in that, The image recognition algorithm automatically selects the appropriate glue amount pattern for the glue dots to be applied.

7. A computer-readable storage medium for storing a computer program, characterized in that: When the program is executed by the processor, it implements the method for dynamically adjusting the dispensing amount of the piezoelectric valve as described in any one of claims 2 to 6.

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