Z-Motion dispensing method for preventing needle from gluing

Abstract

The invention discloses a Z-Motion dispensing method for preventing a needle from gluing, which comprises the following dispensing steps: step 1, a dispensing needle moves downwards to move to a hole to be dispensed, and a certain distance is reserved between the dispensing needle and a dispensing hole; 2, a dispensing needle starts to discharge glue, meanwhile, the dispensing needle starts to move upwards at a constant speed, the dispensing time is set, the dispensing needle is always kept not to be covered by the glue, and glue adhesion is kept not interrupted; 3, after the dispensing needle head moves upwards by a certain distance, the dispensing needle head stops dispensing; the situation that the glue amount is abnormal under the continuous operation condition due to the fact that glue is accumulated in holes and submerges a needle point due to the fact that the permeation process needs a long time is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of glue dispensing for filling dot-shaped gaps, and in particular to a Z-Motion glue dispensing method for preventing a needle from sticking glue. Background Art

[0002] The current mainstream dispensing method is to fix the Z axis at the set dispensing height position for dispensing, and then lift the Z axis after dispensing. Since the glue needs to penetrate in the gap when it is injected into the hole, the penetration process takes a long time, which will cause the glue to accumulate in the hole and the glue will not cover the needle tip. In this way, the Z axis will lift up the glue after dispensing, which will cause abnormal glue amount in continuous operation. Summary of the invention

[0003] In order to solve the defects in the prior art, the present invention provides a Z-Motion glue dispensing method for preventing the needle from sticking to the glue.

[0004] In order to solve the above technical problems, the present invention provides the following technical solutions: The present invention provides a Z-Motion glue dispensing method for preventing needle glue from sticking, comprising the following glue dispensing steps: Step 1: Move the dispensing needle downward to the hole where dispensing is required, leaving a certain distance between the dispensing needle and the dispensing hole; Step 2: The dispensing needle starts to discharge glue and moves upward at a constant speed. Set the dispensing time to ensure that the dispensing needle is not covered by glue and the glue adhesion is not interrupted. Step 3: After the dispensing needle moves upward for a certain distance, the dispensing needle stops dispensing.

[0005] As a preferred technical solution of the present invention, in step 2, the Z-axis lifting speed = set Z-Motion height / glue discharge time (time is dynamic).

[0006] As a preferred technical solution of the present invention, the end height of the glue discharge in step 2 is set according to the maximum height of the glue after accumulation and molding.

[0007] As a preferred technical solution of the present invention, in step 2, when the amount of glue is large, the maximum height of glue accumulation is set to 1.3 mm.

[0008] As a preferred technical solution of the present invention, when the Z-Motion mode in step 2 is a fixed Z-motion height parameter, the speed is unknown and varies with the glue discharge time.

[0009] As a preferred technical solution of the present invention, when the maximum height in step 2 is set to 1.3 mm, the glue discharge time is set according to the size of the point-shaped gap diameter, and the Z-axis lifting speed can be obtained.

[0010] As a preferred technical solution of the present invention, when the lifting speed is fixed in step 2, the lifting height is taken as an unknown parameter.

[0011] As a preferred technical solution of the present invention, in step 2, the Z-motion height = the set Z-Motion speed * the glue discharge time (the time is dynamic).

[0012] As a preferred technical solution of the present invention, in step 2, the glue discharge time is set according to the size of the point-shaped gap diameter, and then the lifting speed is set to obtain the lifting height.

[0013] As a preferred technical solution of the present invention, the initial dispensing height of the dispensing needle in step 1 is set to 0.1 mm.

[0014] The beneficial effects of the present invention are: This Z-Motion dispensing method prevents the needle from sticking to the glue. When dispensing glue, the dispensing needle moves downward so that the dispensing needle moves to the hole where glue is required to be dispensed, and a height distance of 0.1mm is left between the dispensing needle and the dispensing hole; the dispensing needle starts to dispense glue, and at the same time, the dispensing needle starts to move upward at a uniform speed at a Z-axis lifting speed = set Z-Motion height / glue dispensing time (time is dynamic), and the dispensing time is set to always keep the dispensing needle from being covered by glue and keep the glue adhesion uninterrupted; after the dispensing needle moves upward for a certain distance, the dispensing needle stops dispensing glue at the same time, avoiding the penetration process that takes a long time, causing glue to accumulate in the hole and the glue to cover the needle tip, so that the Z-axis lifting will bring up the glue after dispensing, and abnormal glue amount will be caused under continuous operation. DETAILED DESCRIPTION

[0015] The following is a description of the preferred embodiments of the present invention. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0016] Embodiment: A Z-Motion dispensing method for preventing needle sticking includes the following dispensing steps: Step 1: Move the dispensing needle downward to the hole where dispensing is required, leaving a certain distance between the dispensing needle and the dispensing hole; Step 2: The dispensing needle starts to discharge glue and moves upward at a constant speed. Set the dispensing time to ensure that the dispensing needle is not covered by glue and the glue adhesion is not interrupted. Step 3: After the dispensing needle moves upward for a certain distance, the dispensing needle stops dispensing.

[0017] Among them, the Z-axis lifting speed in the step 2 = set Z-Motion height / glue discharge time (time is dynamic), the end glue discharge height in the step 2 is set according to the maximum height after the glue is deposited and formed, and the maximum glue accumulation height in the step 2 is set to 1.3mm when the amount of glue is large. When the Z-Motion mode in the step 2 is a fixed Z-motion height parameter, the speed is unknown and changes with the glue discharge time. When the maximum height in the step 2 is set to 1.3mm, the glue discharge time is set according to the size of the point gap diameter, and the Z-axis lifting speed can be obtained.

[0018] Among them, when the lifting speed is fixed in step 2, the lifting height is taken as an unknown parameter, and the Z-motion height in step 2 = set Z-Motion speed * glue discharge time (time is dynamic). In step 2, the glue discharge time is set according to the size of the point gap diameter, and then the lifting speed is set to obtain the lifting height.

[0019] The initial dispensing height of the dispensing needle in step 1 is set to 0.1 mm, which provides a reserved distance for dispensing and prevents the initial dispensing glue from covering the needle tip.

[0020] During operation, this Z-Motion dispensing method prevents the needle from sticking to the glue. When dispensing glue, the dispensing needle moves downward so that the dispensing needle moves to the hole where glue is required to be dispensed, and a height distance of 0.1mm is left between the dispensing needle and the dispensing hole; the dispensing needle starts to dispense glue, and at the same time, the dispensing needle starts to move upward at a uniform speed at a Z-axis lifting speed = set Z-Motion height / glue dispensing time (time is dynamic), and the dispensing time is set to always keep the dispensing needle from being covered by glue and keep the glue adhesion uninterrupted; after the dispensing needle moves upward for a certain distance, the dispensing needle stops dispensing glue at the same time, avoiding the penetration process that takes a long time, causing glue to accumulate in the hole and the glue to cover the needle tip, so that the Z-axis lifting will bring up the glue after the glue is dispensed, and abnormal glue amount will be caused under continuous operation.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A Z-Motion dispensing method for preventing needle glue from sticking, characterized in that: The dispensing steps include the following: Step 1: Move the dispensing needle downward to the hole where dispensing is required, leaving a certain distance between the dispensing needle and the dispensing hole; Step 2: The dispensing needle starts to discharge glue and moves upward at a constant speed. Set the dispensing time to ensure that the dispensing needle is not covered by glue and the glue adhesion is not interrupted. Step 3: After the dispensing needle moves upward a certain distance, the dispensing needle stops dispensing.

2. A Z-Motion dispensing method for preventing needle sticking according to claim 1, characterized in that: In step 2, the Z-axis lifting speed = set Z-Motion height / glue discharge time (time is dynamic).

3. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 2, characterized in that: The end height of the glue discharge in step 2 is set according to the maximum height of the glue after accumulation and molding.

4. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 3, characterized in that: In step 2, when the amount of glue is large, the maximum height of glue accumulation is set to 1.3 mm.

5. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 4, characterized in that: When the Z-Motion mode in step 2 is a fixed Z-motion height parameter, the speed is unknown and varies with the glue discharge time.

6. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 5, characterized in that: When the maximum height in step 2 is set to 1.3 mm, the glue discharge time is set according to the diameter of the point-shaped gap, and the Z-axis lifting speed can be obtained.

7. A Z-Motion dispensing method for preventing needle from sticking to glue according to claim 6, characterized in that: When the lifting speed is fixed in step 2, the lifting height is taken as an unknown parameter.

8. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 7, characterized in that: In step 2, Z-motion height = set Z-motion speed * glue discharge time (time is dynamic).

9. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 8, characterized in that: In step 2, the glue discharge time is set according to the diameter of the point-shaped gap, and then the lifting speed is set to obtain the lifting height.

10. A Z-Motion dispensing method for preventing needle glue from sticking to the needle according to claim 1, characterized in that: The initial dispensing height of the dispensing needle in step 1 is set to 0.1 mm.