UV furnace for dispensing and curing circuit board

Abstract

The utility model provides a UV furnace for dispensing and curing a circuit board, and belongs to the technical field of UV furnaces. Comprising a UV furnace body; the adjusting frame is arranged at the feeding position of the UV furnace body and used for adjusting a circuit board before dispensing; the parallel part is arranged on the adjusting frame and is used for adjusting the circuit board to be parallel; the uniformizing part is arranged in the adjusting frame and used for adjusting the distance of the circuit board to be uniform; and the soft rope is detachably arranged on the uniformizing part and is used for controlling the moving distance of the circuit board. According to the utility model, the parallel part and the uniform part are arranged, so that the distance between the circuit boards is adjusted before the circuit boards enter the UV furnace, the circuit boards are ensured to uniformly enter the UV furnace, and then the distance between the circuit boards can be adjusted according to actual requirements by adjusting the distance of the soft rope, so that the ultraviolet irradiation is ensured to be uniform, and the moisture-proof and anti-corrosion effects of the coating of the circuit boards are not influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of UV ovens, in particular to a UV oven used for glue dispensing and curing of circuit boards. Background Art

[0002] During circuit board processing, it needs to be glued. Gluing of circuit boards is to protect the weak components of PCB. Gluing of circuit boards is a process to protect products. Applying UV glue allows the product to have functions such as pasting, potting, insulation, fixation, and smooth surface. After gluing, a UV oven is needed to quickly solidify the colloid. UV oven is also called UV curing oven. Here "UV" is the abbreviation of ultraviolet rays. Curing refers to the process of converting a substance from low molecules to high molecules. UV oven curing is a device that can emit ultraviolet rays. The glue is solidified by a polymerization reaction after irradiating the UV glue.

[0003] At present, during the use of existing UV ovens, multiple groups of circuit boards are operated simultaneously. Since the circuit boards are placed at different conveyor times, the distances between the circuit boards are unequal. After entering the UV oven, the ultraviolet radiation is uneven, resulting in inconsistent thickness of the circuit board coating. Some areas of the circuit board are even not covered by the coating, affecting the moisture-proof and anti-corrosion effect of the circuit board coating. Therefore, the present application provides a UV oven for circuit board dispensing and curing to meet the needs. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a UV furnace for dispensing and curing circuit boards to solve the problem of uniform distance of the existing circuit boards entering the UV furnace.

[0005] In order to solve the above technical problems, the utility model provides the following technical solutions:

[0006] A UV oven for glue dispensing and curing of circuit boards, comprising: a UV oven body; an adjustment frame, arranged at the feeding place of the UV oven body, used to adjust the circuit board before glue dispensing; a parallel part, arranged on the adjustment frame, used to adjust the parallelism of the circuit board; a uniform part, arranged in the adjustment frame, used to adjust the uniform distance of the circuit board; a soft rope, detachably arranged on the uniform part, used to control the moving distance of the circuit board.

[0007] It also includes: an infrared sensor, which is arranged in the adjusting frame and close to the feeding position of the adjusting frame and is used for sensing the circuit board.

[0008] It also includes: a cylinder, which is arranged on the top of the adjusting frame, and the output end of the cylinder extends to the inner cavity of the adjusting frame and is connected to the uniform part, so as to drive the uniform part to rise and fall.

[0009] The parallel part includes: a stepper motor, which is arranged on one side of the adjustment frame and is used to provide power for the circuit board to be parallel; two parallel bars, which are movably arranged in the adjustment frame and correspondingly arranged, and are used to move the circuit board; a bidirectional lead screw, which is arranged in the adjustment frame and is used to drive the parallel bars to move; and two sliders, which are threadedly sleeved on the bidirectional lead screw and are used to be connected to the parallel bars.

[0010] The threads on the surface of the bidirectional lead screw rotate in opposite directions, and one side of the bidirectional lead screw is connected to the output end of the stepping motor.

[0011] The uniformity part includes: a lifting frame, which is movably arranged in the adjustment frame and is used to provide a placement space; a sliding rod, which is arranged in the lifting frame and is used to provide a sliding path; a uniformity plate, which is movably arranged at the bottom of the sliding rod and is used to adjust the distance between circuit boards; a plurality of moving blocks, which are slidably sleeved on the sliding rod, and the soft rope is located on one side of the moving block and is used to drive the uniformity plate to move; a threaded rod, which is arranged in the lifting frame and is located on one side of the sliding rod and is used to drive the moving block; a connecting block, which is threadedly sleeved on the threaded rod, and one side of the connecting block is connected to the moving block and is used to drive the moving block to move synchronously; a servo motor, which is arranged on one side of the lifting frame and is used to provide power to the threaded rod.

[0012] It also includes: a control panel, which is arranged on the adjustment frame and is used to control the adjustment of the circuit board before dispensing glue.

[0013] Compared with the prior art, the utility model has at least the following beneficial effects:

[0014] In the above scheme, by setting the parallel part and the uniform part, the distance between the circuit boards can be adjusted before they enter the UV furnace to ensure that they enter the UV furnace evenly. By adjusting the distance of the soft rope, the distance between the circuit boards can be adjusted according to actual needs to ensure that the ultraviolet irradiation is uniform and will not affect the moisture-proof and anti-corrosion effect of the circuit board coating. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated herein and constitute a part of the specification, illustrate embodiments of the present disclosure and, together with the description, further serve to explain the principles of the present disclosure and to enable those skilled in the relevant art to make and use the present disclosure.

[0016] Figure 1 This is a schematic diagram of the three-dimensional structure of a UV oven used for dispensing and curing circuit boards;

[0017] Figure 2 The left side diagram is used for adjusting the frame structure;

[0018] Figure 3 A schematic diagram of a sliding rod structure;

[0019] Figure 4 It is a schematic diagram of the lifting frame structure.

[0020] [Reference Signs]

[0021] 1. UV furnace body; 2. Adjustment frame; 3. Infrared sensor; 4. Control panel; 5. Cylinder; 6. Parallel part; 7. Uniform part; 8. Soft rope; 61. Stepper motor; 62. Slider; 63. Parallel strip; 64. Bidirectional screw rod; 71. Lifting frame; 72. Moving block; 73. Sliding rod; 74. Servo motor; 75. Uniform plate; 76. Connecting block; 77. Threaded rod.

[0022] As shown in the figure, in order to clearly implement the structure of the embodiment of the utility model, specific structures and devices are marked in the figure, but this is only for illustrative purposes and is not intended to limit the utility model to the specific structure, device and environment. According to specific needs, ordinary technicians in this field can adjust or modify these devices and environments, and the adjustments or modifications made are still included in the scope of the attached claims. DETAILED DESCRIPTION

[0023] The following is a detailed description of a UV oven for curing glue dispensed on circuit boards provided by the utility model in combination with the accompanying drawings and specific embodiments. At the same time, it is explained here that in order to make the embodiments more detailed, the following embodiments are the best and preferred embodiments, and those skilled in the art may also adopt other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments, and are not intended to specifically limit the utility model.

[0024] like Figure 1 and Figure 2 As shown, an embodiment of the utility model provides a UV oven for dispensing and curing of circuit boards, comprising: a UV oven body 1; an adjustment frame 2, arranged at the feed position of the UV oven body 1, for adjusting the circuit board before dispensing; a parallel portion 6, arranged on the adjustment frame 2, for adjusting the parallelism of the circuit board; a uniform portion 7, arranged in the adjustment frame 2, for adjusting the uniform distance of the circuit board; a soft rope 8, detachably arranged on the uniform portion 7, for controlling the moving distance of the circuit board.

[0025] The purpose of setting the parallel portion 6 is to adjust the circuit boards to a uniform horizontal line, which helps to ensure the consistency and reliability of the circuit boards and reduce rework or scrap caused by uneven curing. The purpose of setting the uniform portion 7 is to keep the distance between the circuit boards uniform, thereby ensuring uniform ultraviolet irradiation, avoiding local non-irradiation, and improving the processing effect.

[0026] like Figure 1As shown, it also includes: an infrared sensor 3, which is arranged in the adjusting frame 2, and the infrared sensor 3 is close to the feeding position of the adjusting frame 2, and is used to sense the circuit board.

[0027] The purpose of setting up the infrared sensor 3 is to detect the circuit boards and ensure that the distance between the circuit boards is adjusted horizontally after the last circuit board enters the adjustment frame 2, so as to avoid starting the adjustment operation before the circuit board is completely entered into the adjustment frame 2.

[0028] like Figure 2 As shown, it also includes: a cylinder 5, which is arranged on the top of the adjustment frame 2, and the output end of the cylinder 5 extends to the inner cavity of the adjustment frame 2 and is connected to the uniform part 7, so as to drive the uniform part 7 to rise and fall.

[0029] By setting the cylinder 5, the output end of the cylinder 5 extends to the inner cavity of the adjustment frame 2 and is connected to the lifting frame 71. Under the influence of external current, the cylinder 5 extends, thereby driving the lifting frame 71 to move synchronously.

[0030] like Figure 2 As shown, the parallel part 6 includes: a stepper motor 61, which is arranged on one side of the adjustment frame 2 and is used to provide power for the circuit board to be parallel; two parallel bars 63, which are movably arranged in the adjustment frame 2 and are correspondingly arranged for moving the circuit board; a bidirectional lead screw 64, which is arranged in the adjustment frame 2 and is used to drive the parallel bars 63 to move; two sliders 62, which are threadedly sleeved on the bidirectional lead screw 64 and are used to connect with the parallel bars 63.

[0031] By setting a stepper motor 61, the output end of the stepper motor 61 and the bidirectional lead screw 64 are fixed. When the stepper motor 61 is operated by an external current, the output end of the stepper motor 61 generates rotational power, which drives the bidirectional lead screw 64 to generate synchronous movement, providing a power source for the rotation of the bidirectional lead screw 64.

[0032] like Figure 2 As shown, the threads on the surface of the bidirectional lead screw 64 rotate in opposite directions, and one side of the bidirectional lead screw 64 is connected to the output end of the stepping motor 61 .

[0033] By setting up the bidirectional screw rod 64, when the stepping motor 61 drives the bidirectional screw rod 64 to move synchronously, since the threads on the surface of the bidirectional screw rod 64 rotate in opposite directions, the bidirectional screw rod 64 drives the two sliders 62 to move inward or outward, thereby facilitating subsequent operations.

[0034] like Figure 2 and Figure 4As shown, the uniform portion 7 includes: a lifting frame 71, which is movably arranged in the adjustment frame 2 and is used to provide a placement space; a slide bar 73, which is arranged in the lifting frame 71 and is used to provide a sliding path; a uniform plate 75, which is movably arranged at the bottom of the slide bar 73 and is used to adjust the distance between the circuit boards; a plurality of moving blocks 72, which are slidably sleeved on the slide bar 73, and the soft rope 8 is located on one side of the moving block 72, and is used to drive the uniform plate 75 to move; a threaded rod 77, which is arranged in the lifting frame 71 and is located on one side of the slide bar 73, and is used to drive the moving block 72; a connecting block 76, which is threadedly sleeved on the threaded rod 77, and one side of the connecting block 76 is connected to the moving block 72, and is used to drive the moving block 72 to move synchronously; a servo motor 74, which is arranged on one side of the lifting frame 71 and is used to provide power for the threaded rod 77.

[0035] The circuit board group enters the adjustment frame 2, first through the parallel part 6, the circuit board group is kept at the same level, by setting the servo motor 74, the servo motor 74 rotates, drives the threaded rod 77 to rotate, so that the connecting block 76 moves, the connecting block 76 and the moving block 72 are fixedly connected, so that the moving block 72 moves synchronously with the connecting block 76, and the moving block 72 and the uniform plate 75 are fixedly connected, so that the uniform plate 75 moves synchronously with the moving block 72. At the same time, the two moving blocks 72 are connected by a soft rope 8, one side of the soft rope 8 is fixedly connected to the lifting frame 71, and the moving block 72 moves. When moving, the soft rope 8 is used to make the first moving block 72 move a certain distance, then stop moving forward and move in place. The second moving block 72 is restricted by the soft rope 8 and moves the same distance and then moves in place. This is repeated until the last moving block 72 reaches the specified distance, so that the uniform plates 75 that are in contact with each other are unfolded and the distance is the same. After the uniform plates 75 are unfolded, the lifting frame 71 controlled by the cylinder 5 is accurately inserted between the circuit board groups, so as to separate the circuit boards. The circuit boards are in contact with the uniform plates 75, so that the distance between the circuit boards is the same.

[0036] The connecting block 76 is connected to the threaded rod 77 by threads to form a thread pair. When the threaded rod 77 rotates, the connecting block 76 moves axially along the threaded rod 77 under the action of the thread pair. The connecting block 76 and the moving block 72 are fixedly connected so that the moving block 72 moves synchronously with the connecting block 76. When the first moving block 72 stops moving forward due to the pulling force of the soft rope 8, the thread pair between it and the threaded rod 77 is not separated, but enters a static friction state. At this time, although the first moving block 72 no longer moves forward along the axial direction of the threaded rod 77, the threaded rod 77 continues to rotate without encountering additional resistance, because it only needs to overcome the static friction force inside the thread pair; the role of the soft rope 8 is to limit the travel of the moving block 72, so that it stops moving forward after moving a certain distance. When the first moving block 72 stops moving, the soft rope 8 applies a pulling force to it in the opposite direction of the rotation of the threaded rod 77. This pulling force is balanced with the static friction force inside the thread pair, so that the first moving block 72 remains relatively stationary. The pulling force applied by the soft rope 8 acts indirectly on the thread pair through the moving block 72, rather than directly on the threaded rod 77, so it will not directly prevent the rotation of the threaded rod 77; the servo motor 74, as a power source, continuously provides sufficient torque to drive the threaded rod 77 to rotate. As long as the torque output by the motor is greater than the various resistances encountered by the threaded rod 77 during the rotation process (including the friction force of the thread pair, the inertia force of the moving block 72 and the uniform plate 75, the pulling force of the soft rope 8 on the moving block 72, etc.), the threaded rod 77 can keep rotating.

[0037] A buckle or hook is provided on one side of the moving block 72 away from the threaded rod 77, and the soft rope 8 is connected by the buckle or hook, such as tying, buckling and winding, to fix the soft rope 8. One side of the soft rope 8 is connected to the lifting frame 71, and the other side of the soft rope 8 is connected to the moving block 72. The length of the soft rope 8 between the two moving blocks 72 is the same. When the moving blocks 72 move synchronously, the soft rope 8 is driven to stretch. After the soft rope 8 is unfolded, it will remain in a tensioned state, thereby ensuring that the distance between the two moving blocks 72 after movement is always consistent, so that the distance between the uniform plate 75 after movement is always consistent, thereby ensuring that the distance between the circuit boards is the same; the length of the soft rope 8 pre-set and fixed between the two moving blocks 72 plays a key role. When the distance between the circuit boards needs to be adjusted, by adjusting the length of the soft rope 8, the difference in the final stopping positions of the two moving blocks 72 in the process of following the rotation of the threaded rod 77 is essentially determined, thereby accurately controlling the unfolding distance of the uniform plate 75, ensuring that the distance between the circuit boards can be accurately adjusted as needed, thereby avoiding that after the threaded rod 77 rotates, the uniform plate 75 is driven to move continuously with the cooperation of the connecting block 76 and the moving block 72, causing multiple uniform plates 75 to contact each other, affecting the adjustment of the circuit boards.

[0038] like Figure 1 As shown, it also includes: a control panel 4, which is arranged on the adjustment frame 2 and is used to control the adjustment of the circuit board before dispensing.

[0039] The purpose of setting up the control panel 4 is to input the required data in advance, eliminating the need for subsequent adjustments by personnel, thereby saving time. The control panel 4 always displays the operation of adjusting the circuit board. When the circuit board needs to be adjusted according to actual requirements, only the adjusted data needs to be input into the control panel 4, thereby reducing the operation process.

[0040] The technical solution provided by the utility model is to use the control panel 4 to start the infrared sensor 3 and the stepper motor 61, place the circuit board at the conveying place of the UV furnace body 1, and after the infrared sensor 3 detects that the last circuit board in each group enters the adjustment frame 2, the stepper motor 61 drives the bidirectional screw rod 64 to rotate, so that the slider 62 moves inward, drives the parallel bars 63 to move inward, and after the circuit boards are located in the same horizontal line, the parallel bars 63 are reset; use the control panel 4 to start the cylinder 5 and the servo motor 74, and the servo motor 74 drives the threaded rod 77 to rotate, so that the connecting block 76 moves to the left, drives the moving block 72 to move to the left, and moves the uniform plate 75, and the cylinder 5 extends to drive the lifting frame 71 to move downward, so that the uniform plate 75 is located between the circuit board groups, and with the cooperation of the soft rope 8, the distance between the circuit boards is ensured to be uniform.

[0041] The present invention covers any substitution, modification, equivalent method and scheme made on the essence and scope of the present invention. In order to make the public have a thorough understanding of the present invention, specific details are described in detail in the above preferred embodiments of the present invention, and those skilled in the art can fully understand the present invention without the description of these details. In addition, in order to avoid unnecessary confusion about the essence of the present invention, well-known methods, processes, procedures, components and circuits are not described in detail.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A UV oven for curing glue for circuit boards, characterized in that: include: UV oven body (1); An adjustment frame (2) is arranged at the feeding position of the UV furnace body (1) and is used for adjusting the circuit board before dispensing; A parallel portion (6) is arranged on the adjustment frame (2) and is used to adjust the parallelism of the circuit board; A uniform portion (7) is arranged in the adjustment frame (2) and is used to adjust the distance between the circuit boards to be uniform; A soft rope (8) is detachably arranged on the uniform portion (7) and is used to control the moving distance of the circuit board.

2. The UV oven for curing printed circuit boards according to claim 1, characterized in that: Also includes: An infrared sensor (3) is arranged in the regulating frame (2), and the infrared sensor (3) is close to the feeding position of the regulating frame (2), and is used for sensing the circuit board.

3. The UV oven for curing circuit board glue according to claim 1, characterized in that: Also includes: The cylinder (5) is arranged on the top of the regulating frame (2), and the output end of the cylinder (5) extends to the inner cavity of the regulating frame (2) and is connected to the uniform portion (7), so as to drive the uniform portion (7) to rise and fall.

4. The UV oven for curing glue for circuit boards according to claim 1, characterized in that: The parallel portion (6) comprises: A stepping motor (61) is arranged on one side of the adjustment frame (2) and is used to provide power in parallel with the circuit board; Two parallel bars (63) are movably arranged in the adjustment frame (2) and are correspondingly arranged for moving the circuit board; A bidirectional screw rod (64) is arranged in the adjustment frame (2) and is used to drive the parallel bars (63) to move; Two sliding blocks (62) are threadedly sleeved on the bidirectional screw rod (64) and are used to be connected to the parallel bars (63).

5. The UV oven for curing glue for circuit boards according to claim 4, characterized in that: The threads on the surface of the bidirectional lead screw (64) rotate in opposite directions, and one side of the bidirectional lead screw (64) is connected to the output end of the stepping motor (61).

6. The UV oven for curing printed circuit boards according to claim 1, characterized in that: The uniform portion (7) comprises: A lifting frame (71) movably arranged in the adjustment frame (2) and used to provide a placement space; A sliding rod (73) is arranged in the lifting frame (71) and is used to provide a sliding path; A uniform plate (75) movably arranged at the bottom of the slide bar (73) and used for adjusting the distance between the circuit boards; A plurality of moving blocks (72) are slidably sleeved on the sliding rod (73), and the soft rope (8) is located on one side of the moving block (72) and is used to drive the uniform plate (75) to move; A threaded rod (77) is arranged in the lifting frame (71) and is located on one side of the sliding rod (73), and is used to drive the moving block (72); a connecting block (76) threadably sleeved on the threaded rod (77), and one side of the connecting block (76) being connected to the moving block (72) for driving the moving block (72) to move synchronously; A servo motor (74) is arranged on one side of the lifting frame (71) and is used to provide power to the threaded rod (77).

7. The UV oven for curing glue for circuit boards according to claim 6, characterized in that: Also includes: A control panel (4) is arranged on the adjustment frame (2) and is used to control the adjustment of the circuit board before glue dispensing.

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