Dispensing device

Abstract

This invention provides a dispensing device, including a fixed frame, a vertical frame, a horizontal frame, and a dispensing cylinder. A tracking wheel is mounted on the fixed frame, and a tracking track is mounted on the horizontal frame. The tracking wheel abuts against the tracking track laterally. A tension spring is mounted on the fixed frame, which laterally pulls the horizontal frame. By setting the tracking wheel and tracking track, a horizontal movement is added to the existing vertical movement of the dispensing head. On the one hand, compared to direct dispensing, the oblique disengagement helps to detach the formed glue dot more quickly, ensuring the quality of the glue dot formation. On the other hand, the inclined dispensing cylinder provides sufficient space above the dispensing head, allowing a detection camera to be directly mounted above the dispensing head for real-time detection, shortening the dispensing cycle time and greatly improving dispensing efficiency.

Description

Technical Field

[0001] This invention relates to packaging mechanisms, and more particularly to a dispensing device. Background Technology

[0002] In the assembly and packaging of discrete components, the dispensing operation is a critical process. Solder paste is usually placed at designated locations using a dispensing head. To ensure the quality of subsequent packaging, there are certain requirements for the size and shape of the solder paste dots.

[0003] In existing technologies, dispensing operations involve a vertically moving dispensing mechanism driving the dispensing head up and down to form a glue dot and then lifting it off the dot. To ensure the glue dot forms the desired circular shape, stable dispensing and rapid detachment are necessary during the lifting and detachment process. Furthermore, the time taken for both the dispensing drop and the lifting / detachment during the dispensing process also affects the packaging efficiency of discrete devices.

[0004] In addition, in order to detect the quality of glue dot formation during dispensing, the existing technology usually involves dispensing formation, dispensing head retraction, camera taking pictures for visual inspection, and dispensing head reset to dispensing at the next position. This requires a process of moving the camera between two glue dots for visual inspection, which greatly reduces the efficiency of dispensing and encapsulation. Summary of the Invention

[0005] The technical problem to be solved by the present invention is that the existing straight up-and-down dispensing method is not conducive to glue dot formation, and the dispensing cycle time is long and the encapsulation efficiency is low. The present invention provides a dispensing device to solve the above problems.

[0006] The technical solution adopted by the present invention to solve its technical problem is as follows: a dispensing device, comprising a fixed frame, a vertical frame, a horizontal frame, and a dispensing cylinder mounted on the horizontal frame; the vertical frame is slidably mounted on the fixed frame vertically, and the horizontal frame is slidably mounted on the vertical frame horizontally; a tracking wheel is provided on the fixed frame, and a tracking track is provided on the horizontal frame; the tracking wheel abuts against the tracking track horizontally; a tension spring is provided on the fixed frame, and the tension spring horizontally pulls the horizontal frame; the tracking track is vertical at the top and inclined towards the tracking wheel at the bottom; the dispensing cylinder is inclined, and the inclination direction of the dispensing cylinder is the same as the lower inclination direction of the tracking track.

[0007] Furthermore: a dispensing head is provided at the bottom of the dispensing cylinder, and a detection camera is provided on the vertical frame, with the detection camera positioned directly above the dispensing head.

[0008] Furthermore: the fixed frame is provided with a vertical lead screw, a vertical nut mounted on the vertical lead screw, and a vertical drive motor. The vertical drive motor drives the vertical lead screw to rotate, thereby causing the vertical nut to move in the vertical direction. The vertical frame is fixedly connected to the vertical nut.

[0009] Furthermore: a horizontal guide rail is horizontally arranged on the vertical frame, a horizontal slider is slidably installed on the horizontal guide rail, and the horizontal frame is fixedly arranged on the horizontal slider.

[0010] The beneficial effects of this invention are that the dispensing device of this invention, by setting a tracking wheel and a tracking track, adds lateral movement to the existing technology of vertical movement of the dispensing head. On the one hand, compared with the dispensing operation, the oblique disengagement can help to detach the formed glue dot more quickly, ensuring the quality of glue dot formation. On the other hand, the inclined dispensing cylinder leaves enough space above the dispensing head, which can directly set a detection camera above the dispensing head for real-time detection, shortening the dispensing cycle time and greatly improving dispensing efficiency. Attached Figure Description

[0011] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0012] Figure 1 , Figure 2 and Figure 3 This is a schematic diagram of the structure of a dispensing device according to the present invention.

[0013] In the diagram: 1. Fixed frame; 2. Vertical frame; 3. Horizontal frame; 4. Dispensing cylinder; 5. Tracking wheel; 6. Tracking track; 7. Tension spring; 8. Dispensing head; 9. Detection camera; 10. Vertical lead screw; 11. Vertical nut; 12. Horizontal guide rail; 13. Horizontal slider. Detailed Implementation

[0014] Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the invention, and should not be construed as limiting the invention. Rather, embodiments of the invention include all variations, modifications, and equivalents falling within the spirit and scope of the appended claims.

[0015] In the description of this invention, it should be understood that the terms "center," "longitudinal," "lateral," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "axial," "radial," and "circumferential" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this invention and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0016] Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances. Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0017] Any process or method description in the flowchart or otherwise herein can be understood as representing a module, segment, or portion of code comprising one or more executable instructions for implementing a particular logical function or process, and the scope of the preferred embodiments of the invention includes additional implementations in which functions may be performed not in the order shown or discussed, including substantially simultaneously or in reverse order depending on the functions involved, as will be understood by those skilled in the art to which embodiments of the invention pertain.

[0018] like Figures 1 to 3 As shown, the present invention provides a dispensing device, including a fixed frame 1, a vertical frame 2, a horizontal frame 3, and a dispensing cylinder 4 mounted on the horizontal frame 3. The vertical frame 2 is slidably mounted vertically on the fixed frame 1, and the horizontal frame 3 is slidably mounted horizontally on the vertical frame 2. A tracking wheel 5 is provided on the fixed frame 1, and a tracking track 6 is provided on the horizontal frame 3. The tracking wheel 5 abuts against the tracking track 6 horizontally. A tension spring 7 is provided on the fixed frame 1, and the tension spring 7 pulls the horizontal frame 3 horizontally. The tracking track 6 is vertical at the top and inclined towards the tracking wheel 5 at the bottom. The dispensing cylinder 4 is inclined, and the inclination direction of the dispensing cylinder 4 is the same as the inclination direction of the lower part of the tracking track 6.

[0019] The dispensing device designed in this patent features a vertical frame 2 that moves vertically on a fixed frame 1, driving the horizontal frame 3 and dispensing cylinder 4 to move vertically as well. This forms the basis for the dispensing operation's downward dispensing and upward release actions. Simultaneously, the horizontal frame 3 reciprocates horizontally relative to the vertical frame 2. The presence of the tension spring 7 keeps the tracking wheel 5 constantly in contact with the tracking track 6. The shape of the tracking track 6 horizontally restricts the lateral position of the horizontal frame 3 at different vertical heights. This combined action allows the dispensing cylinder 4 to achieve vertical dispensing and oblique release. Specifically, the tracking track 6 is shaped with its upper part vertical and its lower part inclined towards the tracking wheel 5. When the dispensing tube 4 extends downwards to dispense glue, the tracking wheel 5 abuts against the upper vertical area of ​​the tracking track 6. At this time, the horizontal frame 3 does not move horizontally, and the dispensing tube 4 is in a vertical downward dispensing motion mode. When the dispensing tube 4 moves upwards, that is, when it leaves the dispensing point, the tracking wheel 5 abuts against the lower inclined area of ​​the tracking track 6. At this time, the horizontal frame 3 shifts horizontally. Combined with the horizontal frame 3 being driven vertically by the vertical frame 2, the overall motion trajectory of the dispensing tube 4 is an oblique motion. The dispensing tube 4 can quickly leave the dispensing area, which on the one hand facilitates glue dot formation and optimizes the subsequent packaging effect, and on the other hand, shortens the dispensing and detachment cycle time, directly improving packaging efficiency and increasing the number of packages per unit time.

[0020] The bottom of the dispensing cylinder 4 is provided with a dispensing head 8, and the vertical frame 2 is provided with a detection camera 9, which is located directly above the dispensing head 8.

[0021] In the existing vertically positioned direct-acting dispensing method, since the dispensing cylinder 4 is vertically positioned directly below the drive device, the inspection camera 9 for detecting the packaging process is generally positioned to the side of the dispensing cylinder 4 to avoid the position of the dispensing cylinder 4. During the packaging process, dispensing is usually done first, and after dispensing, the camera is moved to the top of the glue dot to take a picture for inspection. After confirmation, it moves to the next dispensing position.

[0022] In this application, due to the inclined setting of the dispensing cylinder 4, a certain space is left above the dispensing head 8. A detection camera 9 is set directly above the dispensing head 8. This detection camera is set above the vertical frame 2 and does not move with the horizontal frame 3. It is always directly above the glue dot of the dispensing head 8. In this way, when the dispensing head 8 finishes dispensing, since the dispensing cylinder 4 is dispensing at an angle during the dispensing process, the dispensing head 8 will also shift from the position of the glue dot that was just dispensed during the dispensing process. The detection camera 9 located directly above the glue dot will take a picture and detect it in time. If it passes the test, it can enter the next dispensing station to continue the dispensing operation.

[0023] In this design, the dispensing process is completed when the dispensing cylinder 4 moves obliquely and exits the detection camera 9, which can then be used for detection. This avoids the need for separate alignment and photography detection in existing technologies, reducing the cycle time by about half and directly doubling the packaging efficiency.

[0024] The fixed frame 1 is equipped with a vertical lead screw 10, a vertical nut 11 mounted on the vertical lead screw 10, and a vertical drive motor. The vertical drive motor drives the vertical lead screw 10 to rotate, thereby causing the vertical nut 11 to move vertically. The vertical frame 2 is fixedly connected to the vertical nut 11. By controlling the rotation of the vertical drive motor, the vertical nut 11 can be driven to move vertically as designed, thereby reliably driving the vertical movement of the vertical frame 2, achieving automated control.

[0025] A horizontal guide rail 12 is horizontally arranged on the vertical frame 2, and a horizontal slider 13 is slidably mounted on the horizontal guide rail 12. The horizontal frame 3 is fixedly mounted on the horizontal slider 13. The horizontal frame 3 achieves the function of horizontal movement by sliding the horizontal slider 13 on the horizontal guide rail 12, which greatly improves the reliability of the movement and ensures the movement accuracy of the dispensing cylinder 4 in the oblique direction.

[0026] In the description of this specification, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the invention. In this specification, illustrative expressions of the terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0027] Based on the above-described preferred embodiments of the present invention, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the inventive concept. The technical scope of this invention is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A dispensing device, characterized in that: It includes a fixed frame (1), a vertical frame (2), a horizontal frame (3), and a dispensing cylinder (4) mounted on the horizontal frame (3). The vertical frame (2) is slidably mounted on the fixed frame (1) in a vertical direction, and the horizontal frame (3) is slidably mounted on the vertical frame (2) in a horizontal direction. The fixed frame (1) is provided with a tracking wheel (5), the transverse frame (3) is provided with a tracking track (6), the tracking wheel (5) abuts against the tracking track (6) in the transverse direction, and the fixed frame (1) is provided with a tension spring (7), the tension spring (7) pulls the transverse frame (3) in the transverse direction. The tracking track (6) is vertical at the top and inclined towards the tracking wheel (5) at the bottom. The dispensing cylinder (4) is inclined and the inclination direction of the dispensing cylinder (4) is the same as the inclination direction of the bottom of the tracking track (6).

2. The dispensing device as described in claim 1, characterized in that: The bottom of the dispensing cylinder (4) is provided with a dispensing head (8), and the vertical frame (2) is provided with a detection camera (9), which is located directly above the dispensing head (8).

3. The dispensing device as described in claim 2, characterized in that: The fixed frame (1) is provided with a vertical lead screw (10), a vertical nut (11) installed on the vertical lead screw (10) and a vertical drive motor. The vertical drive motor drives the vertical lead screw (10) to rotate, thereby driving the vertical nut (11) to move in the vertical direction. The vertical frame (2) is fixedly connected to the vertical nut (11).

4. The dispensing device as described in claim 3, characterized in that: A horizontal guide rail (12) is horizontally arranged on the vertical frame (2), and a horizontal slider (13) is slidably installed on the horizontal guide rail (12). The horizontal frame (3) is fixedly arranged on the horizontal slider (13).

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