Dispensing head positioning device and dispensing machine assembly

Abstract

The embodiment of the utility model provides a dispensing head positioning device and a dispensing machine assembly. The positioning device comprises a moving part and a transmission part, the moving part is arranged on the transmission part and can move up and down in the Z direction, and the moving part is provided with a transparent area; the Z-axis sensor is positioned below the moving part; the visual camera is located below the moving part and is arranged opposite to the transparent area; and under the condition that the dispensing head moves to be in contact with the transparent area and triggers the Z-axis sensor, the Z-axis sensor identifies the Z-direction position of the dispensing head, and the visual camera identifies the X-direction position and the Y-direction position of the dispensing head.

Description

Technical Field

[0001] The embodiments of the present application relate to the field of position identification technology, and more specifically, to a dispensing head positioning device and a dispensing machine assembly. Background Art

[0002] Currently, Z-axis tool setting, laser beam or dual vision are commonly used to calibrate the position of the dispensing head.

[0003] Among them, the tool setting instrument can only calibrate the Z-axis height deviation of the dispensing head, and cannot directly calibrate the XY value; in addition, the use of the opposing laser method and the dual vision method can only calibrate the XYZ value of the contact needle, and cannot calibrate the position of the non-contact dispensing nozzle.

[0004] In view of this, it is necessary to provide a new technical solution to solve the above technical problems. Utility Model Content

[0005] The purpose of this application is to provide a new technical solution for a dispensing head positioning device and a dispensing machine assembly.

[0006] In a first aspect, the present application provides a dispensing head positioning device. The dispensing head positioning device comprises:

[0007] A moving part and a transmission part, wherein the moving part is arranged on the transmission part and can move up and down along the Z direction, and the moving part has a transparent area;

[0008] A Z-axis sensor, located below the moving component;

[0009] A visual camera is located below the moving component and is arranged opposite to the transparent area;

[0010] When the dispensing head moves to contact the transparent area and triggers the Z-axis sensor, the Z-axis sensor identifies the Z-axis position of the dispensing head, and the visual camera identifies the X-axis position and the Y-axis position of the dispensing head.

[0011] Optionally, the movable component includes a fixed plate and a transparent plate, the fixed plate is provided with a mounting hole, and the transparent plate is arranged in the mounting hole to form the transparent area.

[0012] Optionally, the transmission component comprises: a slide rail assembly and a slider assembly, wherein the slider assembly is arranged on the slide rail assembly, and the slider assembly can move up and down along the slide rail assembly;

[0013] The moving component is fixedly connected to the slider assembly.

[0014] Optionally, the moving component includes a first fixing plate, a second fixing plate and a third fixing plate;

[0015] The second fixing plate and the third fixing plate are arranged opposite to each other in the X direction and are respectively connected to the first fixing plate;

[0016] The second fixing plate is fixedly connected to the slider assembly at a side facing away from the third fixing plate, and / or

[0017] The third fixing plate is fixedly connected to the slider assembly at a side facing away from the second fixing plate.

[0018] Optionally, a mounting seat is further included, and the transmission component is arranged on the mounting seat.

[0019] Optionally, an elastic component is further included, one end of which is connected to the moving component, and the other end of which is fixed on the mounting seat.

[0020] Optionally, in an initial state, the elastic component is in a compressed state due to the gravity of the moving component; the bottom of the moving component is in contact with the Z-axis sensor and does not trigger the Z-axis sensor:

[0021] Wherein, the Z-axis sensor is triggered after the dispensing head contacts the transparent area.

[0022] Optionally, an annular light source is further included, and the annular light source is located between the transparent area and the visual camera.

[0023] Optionally, the Z-axis sensor is a Z-direction displacement sensor or a Z-direction contact switch.

[0024] In a second aspect, the embodiment of the present application further provides a glue dispensing machine assembly. The glue dispensing machine assembly includes a glue dispensing machine and a glue dispensing head positioning device as described in the first aspect, wherein the glue dispensing machine is located above the moving component.

[0025] According to an embodiment of the present application, the dispensing head positioning device can identify both the XYZ position of the contact needle and the XYZ position of the non-contact nozzle. Specifically, by combining the Z-axis sensor with the visual camera and the transparent area that can move up and down along the Z direction, when the dispensing head moves to contact the transparent area (i.e., the needle), the Z-axis sensor will identify the Z-axis position of the dispensing head, and the visual camera will identify the X-axis position and Y-axis position of the dispensing head.

[0026] Other features and advantages of the present specification will become apparent from the following detailed description of exemplary embodiments of the present specification with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the specification and, together with the description, serve to explain the principles of the specification.

[0028] Figure 1 The structure of the dispensing head positioning device provided in the embodiment of the present application is shown as follows: Figure 1 .

[0029] Figure 2 The structure of the dispensing head positioning device provided in the embodiment of the present application is shown as follows: Figure 2 .

[0030] Description of reference numerals:

[0031] 1. Moving part; 11. Fixed plate; 12. Transparent plate; 111. First fixed plate; 112. Second fixed plate; 113. Third fixed plate;

[0032] 2. Transmission component; 21. First slide rail assembly; 22. Second slide rail assembly; 23. First slider assembly; 24. Second slider assembly;

[0033] 3. Z-axis sensor;

[0034] 4. Visual camera;

[0035] 5. Elastic components;

[0036] 6. Ring light source;

[0037] 7. Mounting seat. DETAILED DESCRIPTION

[0038] Various exemplary embodiments of the present application will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present application.

[0039] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the present application, its application, or uses.

[0040] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0041] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0042] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0043] An embodiment of the present application provides a dispensing head positioning device, which can identify and position the XYZ position of a contact needle as well as the XYZ position of a non-contact nozzle, thereby solving the problem that existing methods are incompatible with contact needle position recognition and non-contact nozzle position recognition.

[0044] The dispensing head can be a contact needle or a non-contact nozzle. A contact needle generally refers to a device or tool with a small tip or contact point, which is used to physically contact the object or sample to be measured for measurement, detection or operation. For example, the needle can be a dispensing machine needle, a precision drill bit or a precision measuring probe.

[0045] A non-contact nozzle is a nozzle that does not come into direct contact with the object being sprayed during use, and sprays liquid, gas or other media to the target area through high-speed airflow or other non-contact forces. For example, the nozzle can be a dispensing machine nozzle or a laser solder ball welding nozzle.

[0046] Reference Figure 1 and Figure 2 The dispensing head positioning device includes: a moving part 1 and a transmission part 2, wherein the moving part 1 is arranged on the transmission part 2 and can move up and down along the Z direction, and the moving part 1 has a transparent area; a Z-axis sensor 3 is located below the moving part 1; and a visual camera 4 is located below the moving part 1 and is arranged opposite to the transparent area.

[0047] When the dispensing head moves to contact the transparent area and triggers the Z-axis sensor 3, the Z-axis sensor 3 identifies the Z-axis position of the dispensing head, and the visual camera 4 identifies the X-axis position and the Y-axis position of the dispensing head.

[0048] In the embodiment of the present application, the dispensing head positioning device mainly includes a moving part 1, a transmission part 2, a Z-axis sensor 3 and a visual camera 4. The Z-axis sensor 3 is combined with the visual camera 4, and combined with a transparent area that can move up and down along the Z direction. When the dispensing head moves to contact the transparent area (i.e., the needle), the Z-axis sensor 3 will identify the Z-axis position of the dispensing head, and the visual camera 4 will identify the X-axis position and Y-axis position of the dispensing head.

[0049] Specifically, the moving part 1 is arranged on the transmission part 2 and can move up and down along the Z direction (i.e., the direction perpendicular to the ground) to trigger the Z-axis sensor 3 arranged below it. The moving part 1 is provided with a transparent area, and this transparent area allows the visual camera 4 below to capture the dispensing head contacting the area.

[0050] The Z-axis sensor 3 is located below the moving part 1. When the moving part 1 moves along the Z direction, the Z-axis sensor 3 will be triggered. The Z-axis sensor 3 is used to detect the Z-axis position (ie, height) of the dispensing head when it contacts the transparent area.

[0051] Optionally, the Z-axis sensor 3 may just be in contact with the moving part 1, but the Z-axis sensor 3 is not triggered. The Z-axis sensor 3 is triggered only after the dispensing head is in contact with the transparent area, and the Z-axis sensor 3 can output the Z-axis position of the dispensing head after being triggered.

[0052] Alternatively, the Z-axis sensor 3 is not in contact with the moving part 1, in which case the moving part 1 will not trigger the Z-axis sensor 3. When the dispensing head contacts the transparent area and the moving part 1 moves downward, the moving part 1 will trigger the Z-axis sensor 3, and the Z-axis sensor 3 can output the Z-axis position of the dispensing head after being triggered.

[0053] The visual camera 4 is also located below the moving part 1 and is arranged opposite to the transparent area. When the dispensing head contacts the transparent area on the moving part 1, the visual camera 4 can capture the image of the dispensing head through the transparent area. By processing the image, the visual camera 4 can identify the X-axis position and the Y-axis position (i.e., the position on the horizontal plane) of the dispensing head.

[0054] In a specific embodiment, the entire identification process is as follows:

[0055] The dispensing head is placed near the dispensing head positioning device, and the dispensing head is moved in a certain manner to contact the transparent area.

[0056] When the dispensing head contacts the transparent area, the moving component 1 triggers the Z-axis sensor 3, and the Z-axis sensor 3 is triggered and records the Z-axis position of the dispensing head.

[0057] At the same time, the visual camera 4 captures the image of the dispensing head through the transparent area, and identifies the X-direction and Y-direction positions of the dispensing head through image processing technology.

[0058] Therefore, the dispensing head positioning device provided in the embodiment of the present application can accurately determine the three-dimensional position of the dispensing head, which is very useful for application scenarios that require high-precision positioning (such as automatic dispensing machines, spraying equipment, etc.).

[0059] In an optional embodiment, when the dispensing head positioning device is combined with a computer, the position of the dispensing head can be corrected. For example, the computer includes a storage unit and a data processing unit, the storage unit pre-stores the standard XYZ position of the dispensing head, and the data processing unit compares the actual XYZ position of the dispensing head identified by the positioning device with the pre-stored standard XYZ position to determine the deviation value of the dispensing head position, and corrects the dispensing head position according to the deviation value.

[0060] In one embodiment, referring to Figure 2 The moving component 1 includes a fixed plate 11 and a transparent plate 12. The fixed plate 11 is provided with a mounting hole, and the transparent plate 12 is arranged in the mounting hole to form the transparent area.

[0061] In this embodiment, the fixing plate 11 is the basic structure of the entire moving component 1 to ensure that the transparent plate 12 can be stably fixed and can be moved along the Z direction when necessary.

[0062] The fixing plate 11 is provided with a mounting hole, the size and shape of which need to match those of the transparent plate 12 to ensure that the transparent plate 12 can be tightly mounted in the mounting hole.

[0063] Specifically, when the moving component 1 moves along the Z direction, the fixed plate 11 drives the transparent plate 12 to move together. The presence of the transparent plate 12 allows the visual camera 4 below to observe the dispensing head through it.

[0064] When the dispensing head contacts the transparent plate 12, the Z-axis sensor 3 is triggered and records the Z-axis position of the dispensing head. At the same time, the visual camera 4 captures the image of the dispensing head through the transparent plate 12 and identifies the X-axis and Y-axis positions of the dispensing head through image processing technology.

[0065] In an optional embodiment, the entire movable component 1 is a transparent area. In this case, it is not necessary to divide the movable component 1 into the fixed plate 11 and the transparent plate 12.

[0066] In one embodiment, referring to Figure 1 The transmission component 2 includes: a slide rail assembly and a slider assembly, the slider assembly is arranged on the slide rail assembly, and the slider assembly can move up and down along the slide rail assembly; the moving component 1 is fixedly connected to the slider assembly.

[0067] In this embodiment, the slide rail assembly provides a path along which the moving part 1 slides. The slider assembly is mounted on the slide rail assembly and can move linearly along the slide rail assembly. The moving part 1 (including the fixed plate 11 and the transparent plate 12) is connected to the slider assembly by a fixed connection method. This connection method can be bolts, pins, welding or other reliable connection methods to ensure that the moving part 1 can remain stable when the slider assembly moves.

[0068] When the moving part 1 needs to be moved, the slider assembly of the transmission part 2 moves linearly on the slide rail assembly. Since the moving part 1 is fixedly connected to the slider assembly, the moving part 1 will also move therewith.

[0069] In a specific embodiment, referring to Figure 1The transmission component 2 includes a first slide rail assembly 21, a second slide rail assembly 22, a first slider assembly 23 and a second slider assembly 24. The first slider assembly 23 is arranged on the first slide rail assembly 21, and the second slider assembly 24 is arranged on the second slide rail assembly 22. The first slide rail assembly 21 and the second slide rail assembly 22 are arranged opposite to each other in the X direction.

[0070] One side of the moving component 1 is connected to the first slider assembly 23, and the other side of the moving component 1 is connected to the second slider assembly 24, so that the moving component 1 can ensure smooth movement when moving along the Z direction.

[0071] In one embodiment, referring to Figure 2 , the moving component 1 includes a first fixing plate 111, a second fixing plate 112 and a third fixing plate 113;

[0072] The second fixing plate 112 and the third fixing plate 113 are arranged opposite to each other in the X direction and are respectively connected to the first fixing plate 111;

[0073] The second fixing plate 112 is fixedly connected to the slider assembly at a side facing away from the third fixing plate 113, and / or

[0074] The third fixing plate 113 is fixedly connected to the slider assembly at a side facing away from the second fixing plate 112 .

[0075] In this embodiment, the first fixing plate 111 is the base part of the moving part 1, and the first fixing plate 11 provides connection and support for other fixing plates. The second fixing plate 112 and the third fixing plate 113 are arranged opposite to each other in the X direction (i.e., the horizontal direction) and are connected to the first fixing plate 111. This design makes the moving part 1 more stable in structure, capable of withstanding greater forces and maintaining its shape.

[0076] The specific size, shape and material of the second fixing plate 112 and the third fixing plate 113 can be adjusted according to actual needs to meet different application scenarios and load requirements.

[0077] The side of the second fixing plate 112 facing away from the third fixing plate 113 is fixedly connected to the slider assembly, and / or the side of the third fixing plate 113 facing away from the second fixing plate 112 is fixedly connected to the slider assembly. This connection method ensures that when the slider assembly moves on the slide rail assembly, the moving component 1 can move accurately therewith. The fixed connection method can be bolt connection, welding or other reliable connection methods to ensure the firmness and stability of the connection.

[0078] In one embodiment, referring to Figure 2The first fixing plate 111 is provided with a mounting hole, and a transparent plate 12 is arranged in the mounting hole to form the transparent area.

[0079] In this specific embodiment, the transparent plate 12 is installed in the installation hole of the first fixing plate 111 to form a transparent observation area. This transparent area allows the visual camera 4 to observe the dispensing head above the moving component 1 through it.

[0080] In one embodiment, referring to Figure 1 and Figure 2 The positioning device also includes a mounting seat 7, and the transmission component 2 is arranged on the mounting seat 7.

[0081] In this embodiment, the positioning device also includes a mounting base 7, and the transmission component 2 is arranged on the mounting base 7. The mounting base 7 provides a stable support platform for the transmission component 2, ensuring that the transmission component 2 can operate stably and reliably, and reducing the influence of factors such as vibration and impact on the recognition accuracy and stability.

[0082] In one embodiment, referring to Figure 1 and Figure 2 The positioning device also includes an elastic component 5, one end of which is connected to the moving component 1, and the other end is fixed on the mounting seat 7.

[0083] In this embodiment, the elastic component 5 is generally used to provide damping, buffering or balance of the holding force. In this positioning device, one end of the elastic component 5 is connected to the moving component 1, and the other end is fixed to the mounting seat 7 to ensure that the moving component 1 is more stable during the movement and can provide a certain degree of self-adaptation when needed. The elastic component 5 can be a spring, a rubber pad, an air pressure or hydraulic cylinder, etc. The specific selection depends on the application scenario, load requirements, movement accuracy and other factors of the positioning device.

[0084] In one embodiment, referring to Figure 1 and Figure 2 , in the initial state, the elastic component 5 is in a compressed state due to the gravity of the moving component 1; the bottom of the moving component 1 is in contact with the Z-axis sensor 3 and does not trigger the Z-axis sensor 3;

[0085] The Z-axis sensor 3 is triggered after the dispensing head contacts the transparent area.

[0086] Specifically, in the initial state, the elastic component 5 is in a compressed state due to the gravity of the moving component 1 , that is, before the dispensing head contacts the transparent area, the elastic component 5 has been partially compressed by the weight of the moving component 1 .

[0087] Before the dispensing head contacts the transparent area, the bottom of the moving part contacts the Z-axis sensor 3, but the sensor has not been triggered yet, which means that the initial position of the moving part 1 is close to or slightly pressing on the Z-axis sensor 3, but has not reached the force or displacement that triggers the sensor.

[0088] After the dispensing head contacts the transparent area, the moving component 1 moves along the Z direction, and the elastic component 5 continues to be compressed. At this time, the bottom of the moving component triggers the Z-axis sensor 3, and the Z-axis sensor 3 identifies the Z-axis position of the dispensing head after being triggered.

[0089] In one embodiment, referring to Figure 1 The positioning device also includes an annular light source 6, which is located between the transparent area and the visual camera 4.

[0090] In this embodiment, the positioning device further includes an annular light source 6 for improving the quality of images captured by the visual camera 4 .

[0091] Specifically, the annular light source 6 is generally used to provide uniform and concentrated illumination to enhance the quality and clarity of the image captured by the visual camera 4. In this positioning device, the annular light source 6 is located between the transparent area and the visual camera 4 to ensure that the target object is evenly illuminated, thereby improving the recognition and positioning capabilities of the visual camera 4 to the target features.

[0092] In a specific embodiment, the visual camera 4 includes a FA lens.

[0093] In one embodiment, the Z-axis sensor 3 is a Z-direction displacement sensor or a Z-direction contact switch.

[0094] In this embodiment, the Z-axis sensor 3 is a trigger-type Z-axis sensor, and the Z-axis sensor 3 may be a Z-direction displacement sensor or a Z-direction contact switch.

[0095] For example, the Z-axis sensor 3 is a Z-direction contact switch, specifically a contact high-precision switch. When the dispensing head moves to contact the transparent area and the moving part 1 moves to contact the switch contact, the moving part 1 triggers the switch, thereby determining the dispensing head position on the Z axis.

[0096] It should be noted that the Z-axis sensor 3 includes but is not limited to a Z-axis contact switch or a Z-axis displacement sensor, and the Z-axis sensor 3 may also be other types of trigger sensors.

[0097] The embodiment of the present application further provides a glue dispensing machine assembly. The glue dispensing machine assembly comprises a glue dispensing machine and a glue dispensing head positioning device as described above, wherein the glue dispensing machine is located above the moving component 1 .

[0098] In this embodiment, the glue dispensing machine is combined with the positioning device to ensure the accuracy and stability of glue dispensing.

[0099] The above embodiments focus on the differences between the various embodiments. As long as the different optimization features between the various embodiments are not contradictory, they can be combined to form a better embodiment. Considering the simplicity of the text, they will not be repeated here.

[0100] Although some specific embodiments of the present application have been described in detail by way of example, it should be understood by those skilled in the art that the above examples are only for illustration, not for limiting the scope of the present application. It should be understood by those skilled in the art that the above embodiments may be modified without departing from the scope and spirit of the present application. The scope of the present application is defined by the appended claims.

Claims

1. A dispensing head positioning device, characterized in that: include: A moving component (1) and a transmission component (2), wherein the moving component (1) is arranged on the transmission component (2) and can move up and down in the Z direction, and the moving component (1) has a transparent area; A Z-axis sensor (3), located below the moving component (1); A visual camera (4), located below the moving component (1) and arranged opposite to the transparent area; When the dispensing head moves to contact the transparent area and triggers the Z-axis sensor (3), the Z-axis sensor (3) identifies the Z-axis position of the dispensing head, and the visual camera (4) identifies the X-axis position and Y-axis position of the dispensing head.

2. The dispensing head positioning device according to claim 1, characterized in that: The moving component (1) comprises a fixed plate (11) and a transparent plate (12); the fixed plate (11) is provided with a mounting hole, and the transparent plate (12) is arranged in the mounting hole to form the transparent area.

3. The dispensing head positioning device according to claim 1 or 2, characterized in that: The transmission component (2) comprises: a slide rail assembly and a slider assembly, wherein the slider assembly is arranged on the slide rail assembly, and the slider assembly can move up and down along the slide rail assembly; The moving component (1) is fixedly connected to the slider assembly.

4. The dispensing head positioning device according to claim 3, characterized in that: The moving component (1) comprises a first fixing plate (111), a second fixing plate (112) and a third fixing plate (113); The second fixing plate (112) and the third fixing plate (113) are arranged opposite to each other in the X direction and are respectively connected to the first fixing plate (111); The second fixing plate (112) is fixedly connected to the slider assembly at a side facing away from the third fixing plate (113), and / or The third fixing plate (113) is fixedly connected to the slider assembly at a side facing away from the second fixing plate (112).

5. The dispensing head positioning device according to claim 4, characterized in that: The first fixing plate (111) is provided with a mounting hole, and a transparent plate (12) is arranged in the mounting hole to form the transparent area.

6. The dispensing head positioning device according to claim 1, characterized in that: It also comprises a mounting seat (7), and the transmission component (2) is arranged on the mounting seat (7).

7. The dispensing head positioning device according to claim 6, characterized in that: It also comprises an elastic component (5), one end of which is connected to the moving component (1) and the other end of which is fixed on the mounting seat (7).

8. The dispensing head positioning device according to claim 7, characterized in that: In the initial state, the elastic component (5) is in a compressed state due to the gravity of the moving component (1); the bottom of the moving component (1) is in contact with the Z-axis sensor (3) and does not trigger the Z-axis sensor (3); Wherein, the Z-axis sensor (3) is triggered after the dispensing head contacts the transparent area.

9. The dispensing head positioning device according to claim 1, characterized in that: It also includes an annular light source (6), which is located between the transparent area and the visual camera (4).

10. The dispensing head positioning device according to claim 1, characterized in that: The Z-axis sensor (3) is a Z-direction displacement sensor or a Z-direction contact switch.

11. A glue dispensing machine assembly, characterized in that: It comprises a glue dispensing machine and a glue dispensing head positioning device as described in any one of claims 1 to 10, wherein the glue dispensing machine is located above the moving component (1).

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