Needle-rotatable dispensing mechanism based on conductive adhesive application and four-axis dispensing machine

Abstract

The utility model discloses a needle head rotatable dispensing mechanism based on conductive adhesive application and a four-axis dispensing machine, the needle head rotatable dispensing mechanism comprises a back plate, the upper part of the back plate is provided with a screw valve motor, and an adhesive supply barrel supplies adhesive to the screw valve motor; a support is installed on the back plate located below the screw valve motor, the downward output end of the screw valve motor extends downwards into the support, a rotating assembly is rotationally installed on the lower portion of the support, a needle head is installed at the bottom end of the rotating assembly, and colloid output downwards by the screw valve motor penetrates through the rotating assembly and then is output through the needle head; the rotating assembly is driven by driving power to horizontally rotate; in actual use, the angle of the needle head can be flexibly adjusted by driving power through the rotating assembly according to the requirement of a dispensing path, so that the matching between the glue discharging path of the needle head and the dispensing path is effectively ensured, and the needle head is particularly suitable for conductive glue application using a special-shaped needle head.

Description

Technical Field

[0001] This utility model relates to the field of dispensing machine technology, and in particular to a needle-rotatable dispensing mechanism and a four-axis dispensing machine based on conductive adhesive application. Background Technology

[0002] Conductive adhesives are commonly used in electronic packaging, printed circuit boards, sensors, solar cells, LED lighting, automotive electronics, and other fields. They can also be used in the fabrication and connection of wires, meeting the requirements of circuit boards for high conductivity, corrosion resistance, and high temperature resistance.

[0003] In the prior art, the shape of the needle valve outlet for dispensing conductive adhesive is usually irregular, such as triangle, rectangle, etc., which causes the molding path after dispensing to not be completely matched with the preset path. For example, when dispensing adhesive, the corners often form arcs or bevels, which cannot meet the requirements for dispensing adhesive on precision parts. Utility Model Content

[0004] To address the aforementioned issues, this application provides a reasonably structured needle-rotatable dispensing mechanism and a four-axis dispensing machine for conductive adhesive applications. This effectively ensures the matching of the dispensing path with the needle tip, making it particularly suitable for conductive adhesive applications using irregularly shaped needles.

[0005] The technical solution adopted in this utility model is as follows:

[0006] A rotatable dispensing mechanism for conductive adhesive applications includes a back plate. A screw valve motor is mounted on the upper part of the back plate, and an adhesive supply tank supplies adhesive to the screw valve motor. A support is mounted on the back plate below the screw valve motor. The downward-facing output end of the screw valve motor extends downward into the support. A rotating assembly is rotatably mounted on the lower part of the support. A needle is mounted at the bottom of the rotating assembly. The adhesive output downward by the screw valve motor passes through the rotating assembly and is output through the needle. The rotating assembly is driven to rotate horizontally.

[0007] As a further improvement to the above technical solution:

[0008] The rotating assembly has the following structure: a rotating seat is rotatably mounted on the lower part of the inner hole of the support via a bearing; a glue hole is opened through the upper and lower rotating seat; a glue nozzle at the lower end of the screw valve motor is fitted into the upper opening of the glue hole; a sealing ring is installed between the glue nozzle and the inner wall of the glue hole; and a needle is installed on the rotating seat located at the lower opening of the glue hole.

[0009] The upper opening of the glue hole is set as a countersunk hole with a larger diameter. An annular groove for accommodating the sealing ring is opened on the circumferential wall of the countersunk hole. The glue outlet of the screw valve motor is installed downward into the countersunk hole. Two sealing rings are arranged at intervals above and below.

[0010] The rotating seat extends downward from the center of the bottom surface to form a convex shaft portion. The needle is fitted onto the bottom end of the convex shaft portion and is fixed to the convex shaft portion by a retainer.

[0011] A rotating plate is installed on the bottom surface of the rotating base, and the edge of the rotating plate extends outward to form a sensing part; a sensor is installed on the back plate located below the support, and the sensing part rotates with the rotating plate to the sensor, which detects the sensor.

[0012] The sensor is a photoelectric switch, which is sensed and set as the zero position of the rotation component when the sensing part is rotated to the photoelectric switch.

[0013] The rotating base is driven to rotate horizontally by a driving force, which includes a transmission mechanism connected by a servo motor.

[0014] The transmission mechanism is a belt drive mechanism. The driving wheel in the belt drive mechanism is installed at the output end of the servo motor, and the driven wheel is mounted on the rotating seat located below the support. The driving wheel and the driven wheel are wound together with a belt.

[0015] The nozzle of the needle has a polygonal shape, including but not limited to triangular and rectangular structures.

[0016] A four-axis dispensing machine includes a needle-rotatable dispensing mechanism as described above, wherein a back plate is mounted on an external XYZ three-axis drive device in the needle-rotatable dispensing mechanism.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] In practical use, this invention can flexibly adjust the angle of the needle by means of a rotating component, according to the requirements of the dispensing path, thereby effectively ensuring the matching of the dispensing needle with the dispensing path, and is especially suitable for conductive adhesive applications using irregularly shaped needles.

[0019] This utility model also has the following advantages:

[0020] The support mounted on the back plate provides stable and reliable structural support for the connection between the screw valve motor and the rotating component. While enabling and satisfying the rotation of the rotating component and the needle, it also helps to ensure smooth and unobstructed dispensing. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of this utility model.

[0022] Figure 2 This is an exploded view of the present invention.

[0023] Figure 3 This is a cross-sectional view of the rotating component of this utility model.

[0024] Figure 4 This is a schematic diagram showing the state of the present invention in use.

[0025] The components include: 1. Screw valve motor; 2. Back plate; 3. Glue supply tank; 4. Servo motor; 5. Transmission mechanism; 6. Needle; 7. Sensor; 8. Support; 9. Rotating assembly;

[0026] 60. Fixture;

[0027] 70. Rotating plate; 71. Support plate; 701. Sensing unit;

[0028] 91. Bearing; 92. Sealing ring; 93. Rotating seat; 94. Driven wheel; 931. Chamfered shaft; 932. Glue hole. Detailed Implementation

[0029] The specific embodiments of this utility model are described below with reference to the accompanying drawings.

[0030] like Figure 1 , Figure 2 and Figure 3 As shown, this embodiment of a needle-rotatable dispensing mechanism for conductive adhesive applications includes a back plate 2. A screw valve motor 1 is mounted on the upper part of the back plate 2, and adhesive is supplied to the screw valve motor 1 by a glue supply tank 3. A support 8 is mounted on the back plate 2 below the screw valve motor 1. The downward-facing output end of the screw valve motor 1 extends downward into the support 8. A rotating assembly 9 is rotatably mounted on the lower part of the support 8. A needle 6 is mounted on the bottom end of the rotating assembly 9. The adhesive output downward by the screw valve motor 1 passes through the rotating assembly 9 and is output through the needle 6. The rotating assembly 9 is driven to rotate horizontally by a driving force.

[0031] In practical use, the angle of the needle 6 can be flexibly adjusted by the drive power through the rotating component 9 according to the requirements of the dispensing path, so as to effectively ensure the matching of the dispensing of the needle 6 with the dispensing path.

[0032] In this embodiment, the support 8 installed on the back plate 2 provides a stable and reliable structural support for the connection between the screw valve motor 1 and the rotating component 9. While realizing and satisfying the rotation of the rotating component 9 and the needle 6, it helps to ensure the smooth and unobstructed dispensing.

[0033] The rotating assembly 9 has the following structure: it includes a rotating seat 93 rotatably mounted on the lower part of the inner hole of the support 8 via a bearing 91, and a glue hole 932 is opened through the rotating seat 93. The glue nozzle at the lower end of the screw valve motor 1 is fitted into the upper opening of the glue hole 932. A sealing ring 92 is installed between the glue nozzle and the inner wall of the glue hole 932 to ensure a sealing effect. A needle 6 is installed on the rotating seat 93 located at the lower opening of the glue hole 932.

[0034] In this embodiment, the screw valve motor 1 transmits the adhesive to the lower rotating seat 93 via the lower dispensing nozzle, and finally outputs it through the needle 6.

[0035] When the rotating seat 93 rotates, the sealing ring 92 between its glue hole 932 and the glue nozzle ensures a seal and maintains smooth glue dispensing.

[0036] The upper opening of the glue hole 932 is set as a countersunk hole with a larger diameter. An annular groove for accommodating the sealing ring 92 is opened on the circumferential wall of the countersunk hole. The glue outlet of the screw valve motor 1 is installed downward into the countersunk hole. Two sealing rings 92 are arranged at intervals above and below.

[0037] The rotating seat 93 extends downward from the center of the bottom surface to form a convex shaft portion 931. The needle 6 is fitted onto the bottom end of the convex shaft portion 931 and is fixed to the convex shaft portion 931 by a retainer 60.

[0038] In this embodiment, the retainer 60 is typically a cylindrical structure with a tapered end. The retainer 60 is threadedly locked to the convex shaft portion 931, and the tapered end limits the end of the needle 6 between the retainer 60 and the convex shaft portion 931, thereby realizing the installation of the needle 6.

[0039] A rotating plate 70 is mounted on the bottom surface of the rotating base 93, and the edge of the rotating plate 70 extends outward to form a sensing part 701; a sensor 7 is mounted on the back plate 2 located below the support 8 via the support plate 71. The sensing part 701 rotates with the rotating plate 70 to the sensor 7, and is detected by the sensor 7.

[0040] In this embodiment, after the needle 6 rotates in the horizontal plane with the rotating component 9, the actual position can be fed back by the sensing part 701 through the sensor 7.

[0041] Sensor 7 is a photoelectric switch. When the sensing unit 701 rotates to the photoelectric switch, it is sensed and set to the zero position of the rotation component 9.

[0042] The rotating base 93 is driven to rotate horizontally by a driving force, which includes a transmission mechanism 5 connected to the servo motor 4.

[0043] The transmission mechanism 5 is a belt and synchronous belt transmission mechanism. The driving wheel in the belt transmission mechanism 5 is installed at the output end of the servo motor 4. The driven wheel 94 is mounted on the rotating seat 93 located below the support 8. The driving wheel and the driven wheel 94 are wrapped together with a belt.

[0044] The nozzle of needle 6 has a polygonal shape, including but not limited to triangular and rectangular structures.

[0045] The four-axis dispensing machine of this embodiment includes a needle-rotatable dispensing mechanism as described above, wherein the back plate 2 of the needle-rotatable dispensing mechanism is mounted on an external XYZ three-axis drive device.

[0046] The method of using this utility model is as follows:

[0047] When dispensing adhesive along the dispensing path, for example Figure 4 The rectangular path shown is illustrated using a triangular cross-section of needle 6 as an example. As shown at point A, on conventional three-axis dispensing machines, the adhesive dispensed by needle 6 cannot effectively cover the corners of the path, leaving gaps. However, as shown at point B, during the dispensing process, the synchronous rotation of needle 6 aligns one corner of needle 6 with a corner of the path, effectively and completely covering the preset dispensing path. This is particularly suitable for fine dispensing scenarios involving conductive adhesives.

[0048] This invention can effectively ensure the matching of the dispensing path with the needle tip, and is especially suitable for conductive adhesive applications using irregularly shaped needles.

[0049] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0050] The above description is an explanation of the present utility model and not a limitation thereof. The scope of the present utility model is defined by the claims. Within the protection scope of the present utility model, any form of modification may be made.

Claims

1. A needle-rotatable dispensing mechanism for conductive adhesive applications, comprising a back plate (2), a screw valve motor (1) mounted on the upper part of the back plate (2), and adhesive being supplied to the screw valve motor (1) by a glue supply tank (3); characterized in that: A support (8) is installed on the back plate (2) located below the screw valve motor (1). The downward-facing output end of the screw valve motor (1) extends downward into the support (8). A rotating assembly (9) is rotatably installed on the lower part of the support (8). A needle (6) is installed at the bottom of the rotating assembly (9). The colloid output downward by the screw valve motor (1) passes through the rotating assembly (9) and is output through the needle (6). The rotating assembly (9) is driven to rotate horizontally by the driving power.

2. The rotatable dispensing mechanism for conductive adhesive applications as described in claim 1, characterized in that: The structure of the rotating assembly (9) is as follows: it includes a rotating seat (93) rotatably mounted on the lower part of the inner hole of the support (8) via a bearing (91), and a glue hole (932) is opened through the rotating seat (93) from top to bottom. The glue nozzle at the lower end of the screw valve motor (1) is fitted into the upper opening of the glue hole (932), and a sealing ring (92) is installed between the glue nozzle and the inner wall of the glue hole (932). A needle (6) is installed on the rotating seat (93) located at the lower opening of the glue hole (932).

3. The rotatable dispensing mechanism for conductive adhesive applications as described in claim 2, characterized in that: The upper opening of the glue hole (932) is set as a countersunk hole, and an annular groove for accommodating the sealing ring (92) is opened on the circumferential wall of the countersunk hole. The glue outlet of the screw valve motor (1) is installed downward into the countersunk hole; two sealing rings (92) are arranged at intervals above and below.

4. The rotatable dispensing mechanism for conductive adhesive applications as described in claim 2, characterized in that: The rotating seat (93) extends downward from the center of the bottom surface to form a convex shaft (931). The needle (6) is fitted onto the bottom end of the convex shaft (931) and is fixed to the convex shaft (931) by a retainer (60).

5. A rotatable dispensing mechanism for a needle based on conductive adhesive application as described in claim 2, characterized in that: The rotating base (93) is equipped with a rotating plate (70) on its bottom surface. The edge of the rotating plate (70) extends outward to form a sensing part (701). A sensor (7) is installed on the back plate (2) located below the support (8) via the support plate (71). The sensing part (701) rotates with the rotating plate (70) to the sensor (7) and is detected by the sensor (7).

6. The rotatable dispensing mechanism for conductive adhesive applications as described in claim 5, characterized in that: The sensor (7) is a photoelectric switch. When the sensing part (701) rotates to the photoelectric switch, it is sensed and set to the zero position of the rotation component (9).

7. A rotatable dispensing mechanism for a needle based on conductive adhesive application as described in claim 2, characterized in that: The rotating seat (93) is driven to rotate horizontally by a driving force, which includes a transmission mechanism (5) powered by a servo motor (4).

8. A rotatable dispensing mechanism for conductive adhesive applications as described in claim 7, characterized in that: The transmission mechanism (5) is a belt drive mechanism. The driving wheel in the belt drive mechanism (5) is installed at the output end of the servo motor (4). The driven wheel (94) is mounted on the rotating seat (93) located below the support (8). The driving wheel and the driven wheel (94) are wrapped together with a belt.

9. A rotatable dispensing mechanism for conductive adhesive applications as described in claim 1, characterized in that: The nozzle of the needle (6) has a polygonal shape, including but not limited to triangular and rectangular structures.

10. A four-axis dispensing machine, characterized in that: The rotatable dispensing mechanism includes any one of claims 1-9, wherein the back plate (2) of the rotatable dispensing mechanism is mounted on an external XYZ three-axis drive device.

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