Quantitative dispensing device for PCB (Printed Circuit Board)

Abstract

The utility model relates to the technical field of PCBs (printed circuit boards), and discloses a quantitative dispensing device for PCBs, which comprises a glue gun, a spring and a movable cylinder are sleeved on the glue gun, one end of the spring is fixed on the glue gun, the other end of the spring is fixed on the movable cylinder, the movable cylinder and the glue gun are relatively fixed along the circumferential direction, and the movable cylinder is fixed on the glue gun. The lower end of the movable cylinder is in threaded connection with a cover ring. Compared with the prior art, the glue dispensing device has the following advantages and effects that a glue dispensing position is covered by the cover ring during glue dispensing, a glue solution is extruded to the glue dispensing position by the glue gun, and the glue solution is uniformly extruded and spread by the lower end of the glue gun, so that the glue solution is uniformly distributed and is firmly adhered.

Description

Technical Field

[0001] The utility model relates to the technical field of PCB circuit boards, in particular to a quantitative glue dispensing device for PCB circuit boards. Background Art

[0002] PCBs, also known as printed circuit boards (PCBs), are important electronic components that support and electrically connect electronic components. PCBs require glue dispensing during manufacturing. During high-volume glue dispensing, large drops of glue are squeezed from the glue gun onto the circuit board. Due to the inherent viscosity of the glue, it does not spread automatically, but remains on the board in a droplet-like shape. When components to be bonded are placed on the board, the glue is squeezed out, which can easily cause the glue to overflow the dispensing area and cause uneven glue distribution, resulting in a weak bond. Utility Model Content

[0003] The utility model aims to provide a quantitative glue dispensing device for a PCB circuit board, which has the effect of automatically spreading glue evenly during glue dispensing.

[0004] The above technical purpose of the present utility model is achieved through the following technical solutions: a quantitative dispensing device for a PCB circuit board, comprising a glue gun, the glue gun being provided with a spring and a movable cylinder, one end of the spring being fixed to the glue gun, and the other end of the spring being fixed to the movable cylinder, the movable cylinder and the glue gun being relatively fixed in the circumferential direction and being able to slide relative to each other in the axial direction, and the lower end of the movable cylinder being threadedly connected to a cover ring.

[0005] By adopting the above technical solution, when dispensing glue, the glue gun descends close to the circuit board, and the movable cylinder descends with the glue gun until the cover ring on the movable cylinder is pressed against the glue dispensing position on the circuit board. The glue gun continues to descend and moves relative to the movable cylinder. The glue squeezed out by the glue gun first drips to the glue dispensing position in the middle of the cover ring. The glue gun then descends a certain distance, and the lower end of the glue gun contacts the glue in the cover ring and squeezes and spreads it evenly.

[0006] The cover ring is threadedly connected to the lower end of the movable cylinder, which is convenient for disassembly and replacement of cover rings of different specifications.

[0007] The present invention is further configured as follows: the cover ring comprises an upper ring body and a lower ring body, and the upper ring body is threadedly connected to the lower end of the movable cylinder.

[0008] The present invention is further configured as follows: the upper ring body and the lower ring body are integrally formed.

[0009] The present invention is further configured as follows: the glue gun includes a gun body and a circle of steps fixed to the outer wall of the gun body; the spring is located inside the movable cylinder; the upper end of the spring is fixed to the movable cylinder; and the lower end of the spring is fixed to the step.

[0010] By adopting the above technical solution, the movable cylinder plays a role in protecting the spring.

[0011] The present invention is further configured as follows: an inner edge is formed on the upper end of the movable cylinder, and the outer wall diameter of the step is larger than the inner wall diameter of the inner edge.

[0012] By adopting the above technical solution, the movable cylinder is prevented from being separated from the glue gun.

[0013] The present invention is further configured as follows: a limiting groove is provided on the outer wall of the glue gun along the axial direction; the movable cylinder is provided with a limiting member, and an end portion of the limiting member is embedded in the limiting groove.

[0014] By adopting the above technical solution, the movable cylinder can move in the axial direction relative to the glue gun, but cannot rotate in the circumferential direction relative to the glue gun.

[0015] The present invention is further configured as follows: the limiting member is a bolt, and the bolt is threadedly connected to the movable cylinder.

[0016] The present invention is further configured as follows: the bolts are arranged along the radial direction of the movable cylinder.

[0017] The present invention is further configured as follows: a countersunk hole is provided on the outer wall of the movable cylinder, and the bolt head is located in the countersunk hole.

[0018] The present invention is further configured to include a lifting and adjusting component for driving the glue gun to move up and down.

[0019] By adopting the above technical solution, the lifting and adjusting assembly is used to drive the glue gun to rise and fall.

[0020] The beneficial effects of the utility model are as follows: when dispensing glue, the utility model covers the glue dispensing position through the cover ring, and then uses the glue gun to squeeze the glue liquid to the glue dispensing position, and spreads the glue liquid evenly through the lower end of the glue gun, so that the glue liquid is evenly distributed and the bonding is firm. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0022] Figure 1 It is a structural diagram of the present utility model.

[0023] Figure 2 It is a schematic diagram of the cross-sectional structure of the glue gun of the present utility model.

[0024] Figure 3 It is an enlarged view of point A of the present utility model.

[0025] Figure 4 It is an enlarged view of point B of the present utility model.

[0026] Figure 5 It is an enlarged view of point C of the present invention.

[0027] In the figure, 1. glue gun; 11. gun body; 12. step; 13. limit groove; 2. spring; 3. movable cylinder; 31. inner edge; 32. countersunk hole; 4. cover ring; 41. upper ring body; 42. lower ring body; 5. limit piece. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions of the present invention in conjunction with specific embodiments. Obviously, the embodiments described are only some of the embodiments of the present invention, and not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0029] A quantitative dispensing device for PCB circuit boards, such as Figures 1 to 5 As shown, the glue gun 1 includes a spring 2 and a movable cylinder 3. The glue gun 1 includes a gun body 11 and a circle of steps 12 fixed to the outer wall of the gun body 11. The spring 2 is located inside the movable cylinder 3, with the upper end of the spring 2 fixed to the movable cylinder 3 and the lower end fixed to the step 12. The upper end of the movable cylinder 3 is formed with an inner edge 31, and the outer wall diameter of the step 12 is larger than the inner wall diameter of the inner edge 31. A limiting groove 13 is provided in the outer wall of the glue gun 1 along the axial direction, and the movable cylinder 3 is provided with a limiting member 5, the end of which is embedded in the limiting groove 13. The limiting member 5 is a bolt, which is arranged radially along the movable cylinder 3 and is threadedly connected to the movable cylinder 3. A countersunk hole 32 is provided on the outer wall of the movable cylinder 3, and the head of the bolt is located in the countersunk hole 32.

[0030] The lower end of the movable cylinder 3 is threadedly connected to a cover ring 4, which includes an upper ring body 41 and a lower ring body 42. The upper ring body 41 is threadedly connected to the lower end of the movable cylinder 3, and the upper ring body 41 and the lower ring body 42 are integrally formed.

[0031] The quantitative dispensing device for PCB circuit boards further includes a lifting and adjusting component for driving the glue gun 1 to move up and down, and the lifting and adjusting component is a cylinder.

Claims

1. A quantitative dispensing device for a PCB circuit board, comprising a glue gun (1), characterized in that: The glue gun (1) is provided with a spring (2) and a movable cylinder (3), one end of the spring (2) is fixed to the glue gun (1), and the other end of the spring (2) is fixed to the movable cylinder (3), the movable cylinder (3) and the glue gun (1) are relatively fixed in the circumferential direction and can slide relative to each other in the axial direction, and the lower end of the movable cylinder (3) is threadedly connected to a cover ring (4).

2. A quantitative dispensing device for a PCB circuit board according to claim 1, characterized in that: The cover ring (4) comprises an upper ring body (41) and a lower ring body (42); the upper ring body (41) is threadedly connected to the lower end of the movable cylinder (3).

3. A quantitative dispensing device for a PCB circuit board according to claim 2, characterized in that: The upper ring body (41) and the lower ring body (42) are integrally formed.

4. The quantitative dispensing device for a PCB circuit board according to claim 1, characterized in that: The glue gun (1) comprises a gun body (11) and a circle of steps (12) fixed to the outer wall of the gun body (11); the spring (2) is located inside the movable cylinder (3); the upper end of the spring (2) is fixed to the movable cylinder (3), and the lower end is fixed to the step (12).

5. A quantitative dispensing device for a PCB circuit board according to claim 4, characterized in that: The upper end of the movable cylinder (3) is formed with an inner edge (31), and the outer wall diameter of the step (12) is larger than the inner wall diameter of the inner edge (31).

6. The quantitative dispensing device for a PCB circuit board according to claim 1, characterized in that: The outer wall of the glue gun (1) is provided with a limiting groove (13) along the axial direction, and the movable cylinder (3) is provided with a limiting member (5), and the end of the limiting member (5) is embedded in the limiting groove (13).

7. A quantitative dispensing device for a PCB circuit board according to claim 6, characterized in that: The limiting member (5) is a bolt, and the bolt is threadedly connected to the movable cylinder (3).

8. The quantitative dispensing device for a PCB circuit board according to claim 7, characterized in that: The bolts are arranged radially along the movable cylinder (3).

9. The quantitative dispensing device for a PCB circuit board according to claim 8, characterized in that: The outer wall of the movable cylinder (3) is provided with a countersunk hole (32), and the bolt head is located in the countersunk hole (32).

10. The quantitative dispensing device for a PCB circuit board according to claim 1, characterized in that: It also includes a lifting and adjusting component for driving the glue gun (1) to rise and fall.

Images