Cooling device for PCB solder joints

Abstract

The utility model relates to welding head device technical field especially discloses cooling device for PCB board welding head, the cross -shaped sliding seat sliding connection is inside U -shaped support seat, two L shaped push rod all rotate and connect inside cross -shaped sliding seat, the U -shaped support seat outer surface is provided with two arc -shaped heat dissipation clamping blocks, two arc -shaped heat dissipation clamping blocks set up hollow, have opened liquid inlet by screwing feed block cover in advance, inject the coolant, when the arc -shaped heat dissipation clamping block aligns and clamps and is pasted in the welding head body surface, owing to its adopt the material of strong heat -absorbing, heat -conducting capacity, can quickly absorb the heat of welding head body, the coolant also participates cooling process, realizes the cooling cooling of welding head, and the clamping of two arc -shaped heat dissipation clamping blocks ensures the stability that welding head body placed, and the idle state of device appears the automatic completion heat dissipation treatment, and the heat dissipation mode of direct pasting, and heat transfer path is shorter, and cooling efficiency is higher.

Description

Technical Field

[0001] This utility model relates to the technical field of welding head devices, and in particular to a cooling device for PCB board welding heads. Background Technology

[0002] In the PCB soldering process, the performance and stability of the soldering head play a decisive role in the soldering quality. As electronic devices develop towards miniaturization and high performance, the requirements for PCB soldering precision and efficiency are increasing. This causes the soldering head to generate a large amount of heat during operation. After prolonged processing, the soldering head needs to be cooled down. Excessive temperature not only affects the lifespan of the soldering head, causing premature wear and deformation, reducing soldering accuracy and reliability, but may also cause thermal damage to surrounding electronic components, affecting the overall performance of the PCB. Current soldering equipment typically requires the following technologies in practical applications:

[0003] 1. Precise temperature control: The welding head must be able to precisely control the temperature to adapt to the requirements of different welding materials and processes. For example, for welding some high-precision electronic components, the temperature deviation must be controlled within a very small range, otherwise it may lead to component damage or poor welding.

[0004] 2. Reliable clamping of welding objects: For welding objects such as PCB boards, stable clamps are used to prevent displacement during the welding process. At the same time, the clamps should be adaptable to welding objects of different sizes and shapes.

[0005] Automation and intelligent technologies: The welding process can be automated through programming, including welding path planning, welding speed control, and welding time setting, thereby improving production efficiency and the consistency of welding quality.

[0006] Currently, there are various methods for cooling the welding head of PCB board welding equipment. Some equipment uses air cooling or water cooling to cool the welding head, but these methods are usually operated manually by the processing operator. For example, after processing is completed, the manual air cooling device is moved to the welding head position to dissipate heat, or auxiliary parts with heat dissipation function are directly taken and attached to the welding head to dissipate heat.

[0007] However, the above method has a prominent structural problem: it lacks an automatic cooling function. Relying on manual operation makes the cooling process inefficient and susceptible to human factors. It cannot form an efficient and coordinated integrated system with the welding equipment. For example, manually moving the air-cooling device to the welding head position is difficult to ensure accurate positioning every time, and the operation speed is slow, which will prolong the single welding cycle. Taking the heat dissipation auxiliary parts to attach to the welding head for heat dissipation also has problems such as inconsistent operation and inaccurate time control, which affects the overall production efficiency and product quality stability. Utility Model Content

[0008] To address the shortcomings of existing technologies, this utility model provides a cooling device for PCB board welding heads. It solves the problems of lacking automatic heat dissipation functions, relying on manual operation which makes the cooling process inefficient and susceptible to human factors, and unable to form an efficient and coordinated integrated system with the welding device. For example, manually moving the air-cooling device to the welding head position is difficult to ensure accurate positioning every time, and the operation speed is slow, which will prolong the single welding cycle. Taking heat dissipation auxiliary components to attach to the welding head for heat dissipation also has problems such as inconsistent operation and inaccurate time control, which affect the overall production efficiency and product quality stability.

[0009] To achieve the above objectives, this utility model provides the following technical solution:

[0010] A cooling device for PCB board soldering heads includes a U-shaped support base. The U-shaped support base contains a sliding clamping mechanism, which includes a cross-shaped sliding seat and two L-shaped pushing rods. The cross-shaped sliding seat is slidably connected inside the U-shaped support base, and the two L-shaped pushing rods are rotatably connected inside the cross-shaped sliding seat. Two arc-shaped heat dissipation blocks are provided on the outer surface of the U-shaped support base, and the two L-shaped pushing rods are rotatably connected to the outer surfaces of the two arc-shaped heat dissipation blocks respectively. A limiting mechanism is provided inside the U-shaped support base to limit the movement trajectory of the two arc-shaped heat dissipation blocks. The limiting mechanism includes two sets of limiting links, both sets of limiting links are rotatably connected inside the U-shaped support base and rotatably connected to the outer surfaces of the two arc-shaped heat dissipation blocks respectively. A drive screw is rotatably connected inside the U-shaped support base, and the cross-shaped sliding seat is threaded to the outer surface of the drive screw. A stepper motor is fixedly connected to the outer surface of the U-shaped support base.

[0011] Preferably, the drive screw is disposed on the outer surface of the stepper motor, and the two arc-shaped heat dissipation clamps are threaded with feed covers inside.

[0012] Preferably, a limit switch is fixedly connected to the inner surface of the U-shaped support, and the cross-shaped sliding seat and the limit switch are on the same horizontal line.

[0013] Preferably, the upper end of the U-shaped support is fixedly connected to a first sliding support, and a lifting connecting seat is slidably connected to the outer surface of the first sliding support.

[0014] Preferably, a welding head body is fixedly connected to the inner surface of the lifting connecting seat, the two arc-shaped heat dissipation clamps are adapted to the welding head body, and a second sliding support is slidably connected to the end of the first sliding support away from the lifting connecting seat.

[0015] Preferably, the lower end of the second sliding support is fixedly connected to the main body of the welding device, and a set of circuit board positioning blocks are slidably connected inside the main body of the welding device.

[0016] Preferably, a set of the circuit board positioning blocks are all fixedly connected to a rectangular slider at their lower ends, and the set of rectangular sliders are all slidably connected inside the main body of the welding device.

[0017] Preferably, a set of springs is fixedly connected to the upper end of the main body of the welding device, and a set of circuit board positioning blocks are respectively fixedly connected to the outer surface of the set of springs.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. The two arc-shaped heat dissipation clamps are hollow. The inlet has been opened beforehand by screwing on the feed cover and coolant has been injected. When the arc-shaped heat dissipation clamps are aligned, clamped and attached to the surface of the welding head body, the heat from the welding head body can be quickly absorbed due to the use of a material with strong heat absorption and conduction capabilities. The coolant also participates in the cooling process, achieving cooling and temperature reduction of the welding head. At the same time, the clamping of the two arc-shaped heat dissipation clamps ensures the stability of the welding head body. When the device is idle, it automatically completes heat dissipation. Moreover, the direct contact heat dissipation method has a shorter heat transfer path and higher cooling efficiency.

[0020] Second, during the clamping and cooling operation, the cross-shaped sliding seat is driven to slide. When the cross-shaped sliding seat moves and contacts the limit switch that is on the same horizontal line, the sliding motion of the cross-shaped sliding seat will cause the contact to move, thereby cutting off the circuit that controls the start of welding processing. This ensures the stability of the device when it is idle and prevents the device from being accidentally started. Attached Figure Description

[0021] The above description is only an overview of the technical solution of this utility model. In order to better understand the technical means of this utility model and to implement it in accordance with the contents of the specification, the preferred embodiments of this utility model are described in detail below with reference to the accompanying drawings.

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is an exploded view of the U-shaped support base connection of this utility model;

[0024] Figure 3 This is an exploded view of the circuit board positioning block connection of this utility model;

[0025] Figure 4 This is an exploded view of the arc-shaped heat dissipation clamp of this utility model.

[0026] Legend: 11. U-shaped support; 12. Cross-shaped sliding seat; 13. L-shaped push rod; 14. Arc-shaped heat dissipation clamp; 15. Limiting link; 16. Drive screw; 17. Stepper motor; 18. Feed cover; 19. Limit switch; 21. First sliding support; 22. Lifting connecting seat; 23. Welding head body; 24. Second sliding support; 25. Welding device body; 26. Circuit board positioning block; 27. Rectangular slider; 28. Spring. Detailed Implementation

[0027] This application provides a cooling device for PCB board soldering heads, effectively solving the problems of inefficient cooling processes due to the lack of automated cooling and reliance on manual operation, which is susceptible to human error and cannot form a highly efficient integrated system with the soldering device. For example, manually moving the air-cooling device to the soldering head position is difficult to ensure accurate positioning every time, and the operation speed is slow, which prolongs the single soldering cycle. Similarly, attaching the heat dissipation auxiliary components to the soldering head for heat dissipation also suffers from inconsistent operation and inaccurate time control, affecting overall production efficiency and product quality stability. The arc-shaped heat dissipation clamps are hollow, and the inlet has been pre-opened by screwing on the feed cover to inject coolant. When the arc-shaped heat dissipation clamps are aligned, clamped, and attached to the surface of the welding head body, the heat from the welding head body can be quickly absorbed due to the use of a material with strong heat absorption and thermal conductivity. The coolant also participates in the cooling process, achieving cooling and temperature reduction of the welding head. At the same time, the clamping of the two arc-shaped heat dissipation clamps ensures the stability of the welding head body. When the device is idle, it automatically completes heat dissipation. Moreover, the direct contact heat dissipation method results in a shorter heat transfer path and higher cooling efficiency.

[0028] Example

[0029] like Figure 1 , Figure 2 , Figure 3 and Figure 4As shown, the technical solution in this application embodiment effectively solves the problems of lacking automatic cooling function, relying on manual operation which makes the cooling process inefficient and susceptible to human factors, and unable to form an efficient and coordinated integrated system with the welding device. For example, manually moving the air-cooling device to the welding head position is difficult to guarantee accurate positioning every time, and the operation speed is slow, which will prolong the single welding cycle. Taking the heat dissipation auxiliary parts to attach to the welding head for heat dissipation also has problems such as inconsistent operation and inaccurate time control, which affect the overall production efficiency and product quality stability. The overall idea is as follows: a cooling device for PCB board welding head, including a U-shaped support base 11, with a sliding clamping pushing mechanism inside the U-shaped support base 11, pushing... The mechanism includes a cross-shaped sliding seat 12 and two L-shaped push rods 13. The cross-shaped sliding seat 12 is slidably connected inside a U-shaped support seat 11, and the two L-shaped push rods 13 are rotatably connected inside the cross-shaped sliding seat 12. Two arc-shaped heat dissipation clamps 14 are provided on the outer surface of the U-shaped support seat 11, and the two L-shaped push rods 13 are rotatably connected to the outer surfaces of the two arc-shaped heat dissipation clamps 14 respectively. A limiting mechanism for restricting the movement trajectory of the two arc-shaped heat dissipation clamps 14 is provided inside the U-shaped support seat 11. The limiting mechanism includes two sets of limiting connecting rods 15, both sets of limiting connecting rods 15 are rotatably connected inside the U-shaped support seat 11, and the two sets of limiting connecting rods 15 are rotatably connected to the outer surfaces of the two arc-shaped heat dissipation clamps 14 respectively. The U-shaped support seat 11 is rotatably connected to... A drive screw 16 and a cross-shaped sliding seat 12 are threadedly connected to the outer surface of the drive screw 16. A stepper motor 17 is fixedly connected to the outer surface of the U-shaped support 11. The drive screw 16 is located on the outer surface of the stepper motor 17. When the stepper motor 17 is started, the drive screw 16 is rotated through the output shaft of the stepper motor 17. When the drive screw 16 rotates, it will drive the cross-shaped sliding seat 12 threaded on its surface to slide. The cross-shaped sliding seat 12 slides inside the U-shaped support 11. When the cross-shaped sliding seat 12 slides, it will push two L-shaped push rods 13 outward to slide. There are two arc-shaped heat dissipation clamps 14 rotating on the surface of the two L-shaped push rods 13. During the process of the two L-shaped push rods 13 pushing the arc-shaped heat dissipation clamps 14 to slide, the U-shaped support 11 rotates... Two sets of limiting linkages 15 rotate on the surfaces of two arc-shaped heat dissipation clamps 14. The limiting linkages 15 push the two arc-shaped heat dissipation clamps 14 to achieve a near-center sliding clamping action. The two arc-shaped heat dissipation clamps 14 are hollow. By screwing on two feed covers 18, the liquid inlets of the arc-shaped heat dissipation clamps 14 are blocked, allowing coolant to be injected into them. After the welding head body 23 is displaced and reset after processing, the two arc-shaped heat dissipation clamps 14 align and clamp the welding head body 23 to its surface. The two arc-shaped heat dissipation clamps 14 are made of a material with strong heat absorption and conductivity for cooling and temperature reduction. The clamping action of the two arc-shaped heat dissipation clamps 14 also ensures the stability of the welding head body 23.Heat dissipation is only necessary when the device is about to be idle for an extended period, i.e., when the welding head is not needed temporarily. The coolant injected into the arc-shaped heat dissipation clamp 14 can achieve the heat dissipation requirement again through natural cooling, or its cooling effect can be quickly restored by replacing the coolant.

[0030] Both arc-shaped heat dissipation clamps 14 have feed covers 18 threaded inside. A limit switch 19 is fixedly connected to the inner surface of the U-shaped support 11. The cross-shaped sliding seat 12 and the limit switch 19 are on the same horizontal line. During the clamping and cooling operation, the cross-shaped sliding seat 12 is driven to slide. During the sliding process, the cross-shaped sliding seat 12 will move and contact the limit switch 19 on the same horizontal line. The sliding motion of the cross-shaped sliding seat 12 will collide with the contact to cut off the circuit for starting the welding process, ensuring the stability of the welding device when it is idle and preventing the device from being accidentally started.

[0031] A first sliding support 21 is fixedly connected to the upper end of the U-shaped support 11. A lifting connecting seat 22 is slidably connected to the outer surface of the first sliding support 21. A welding head body 23 is fixedly connected to the inner surface of the lifting connecting seat 22. Two arc-shaped heat dissipation clamps 14 are adapted to the welding head body 23. A second sliding support 24 is slidably connected to the end of the first sliding support 21 away from the lifting connecting seat 22. A welding device body 25 is fixedly connected to the lower end of the second sliding support 24. A set of circuit board positioning blocks 26 is slidably connected inside the welding device body 25. A rectangular slider 27 is fixedly connected to the lower end of each set of circuit board positioning blocks 26. The set of rectangular sliders 27 are all slidably connected inside the welding device body 25. A set of springs 28 is fixedly connected to the upper end of the welding device body 25. The set of circuit board positioning blocks 26 are respectively fixedly connected to the outer surface of the set of springs 28. During the welding operation, the printed circuit board (i.e., PCB board) is pressed and placed on the set of springs 28. The surfaces of the circuit board positioning blocks 26 and the surfaces of the circuit board positioning blocks 26 near the center of the limiting link 15 are inclined surfaces. When the printed circuit board presses a set of circuit board positioning blocks 26, they slide outward and open. When the circuit board positioning blocks 26 slide outward, they push the spring 28 to contract. During the pressing process, the printed circuit board is clamped and positioned by the horizontal surface of the circuit board positioning blocks 26. The circuit board positioning blocks 26 slide in the welding device body 25 by the rectangular slider 27 installed at the lower end. The second sliding support 24 installed at the upper end of the welding device body 25 provides support for the sliding of the first sliding support 21. The sliding first sliding support 21 and the sliding lifting connecting seat 22 realize dual-axis controllable movement. The lifting connecting seat 22 slides and drives the welding head body 23 to approach the printed circuit board. The welding head body 23 is connected to an external heating device. The solder wire of the welding head body 23 is melted by the heating of the welding head body 23 to perform welding processing on the printed circuit board.

[0032] To address the problems existing in the prior art, this utility model provides a cooling device for PCB board soldering heads. Two arc-shaped heat dissipation clamps 14 are hollow, and the inlet has been opened in advance by screwing on the feed cover 18 to inject coolant. When the arc-shaped heat dissipation clamps 14 are aligned, clamped, and attached to the surface of the soldering head body 23, the heat from the soldering head body 23 can be quickly absorbed due to the use of a material with strong heat absorption and thermal conductivity. The coolant also participates in the cooling process, achieving cooling and temperature reduction of the soldering head. At the same time, the clamping of the two arc-shaped heat dissipation clamps 14 ensures the stability of the soldering head body 23. The device automatically completes heat dissipation when idle, and the direct contact heat dissipation method results in a shorter heat transfer path and higher cooling efficiency.

[0033] Working principle:

[0034] The first step involves pressing the printed circuit board (PCB) onto the surface of a set of PCB positioning blocks 26. Since the surface of the PCB positioning blocks 26 near the center of the limiting link 15 is inclined, pressing the PCB causes the PCB positioning blocks 26 to slide outwards and open, simultaneously pushing the spring 28 to contract. During this process, the PCB positioning blocks 26 clamp and position the PCB using their horizontal surfaces, ensuring the stability of the PCB during soldering. The PCB positioning blocks 26 slide within the main body 25 of the soldering device via a rectangular slider 27 mounted at their lower end, achieving position adjustment. The second sliding support 24 mounted at the upper end of the main body 25 of the soldering device provides support for the sliding of the first sliding support 21. The slidable first sliding support 21, in conjunction with the slidable lifting connecting seat 22, enables dual-axis controllable movement. The operator can adjust the first sliding support 21 and the lifting connecting seat 22 according to the position of the PCB, bringing the soldering head body 23 closer to the PCB. The soldering head body 23 is connected to an external heating device, ready for soldering. The soldering device is then activated, and the soldering head body 23 is heated to melt the solder wire, thus soldering the PCB.

[0035] In the second step, after welding is completed, the welding head body 23 is displaced and reset. At this time, the stepper motor 17 is started, and the output shaft of the stepper motor 17 drives the drive screw 16 to rotate. Since the cross-shaped sliding seat 12 is threadedly connected to the outer surface of the drive screw 16, when the drive screw 16 rotates, it drives the cross-shaped sliding seat 12 to slide inside the U-shaped support seat 11. During the sliding process, the cross-shaped sliding seat 12 pushes the two L-shaped push rods 13 outward to slide. The L-shaped push rods 13 push the arc-shaped heat dissipation clamp 14 connected to them to slide. At the same time, the two sets of limiting connecting rods 15 rotating inside the U-shaped support seat 11 also rotate on the surface of the arc-shaped heat dissipation clamp 14. Through the limiting action of the two limiting connecting rods 15, the two arc-shaped heat dissipation clamps 14 produce a near-center sliding clamping action. The two arc-shaped heat dissipation clamps 14 are hollow and have been pre-tightened by screwing. The feed cover 18 opens the liquid inlet and injects coolant. When the arc-shaped heat dissipation clamp 14 is aligned, clamped, and attached to the surface of the welding head body 23, it can quickly absorb the heat of the welding head body 23 due to its high heat absorption and thermal conductivity. The coolant also participates in the cooling process, achieving cooling and temperature reduction of the welding head. At the same time, the clamping of the two arc-shaped heat dissipation clamps 14 ensures the stability of the welding head body 23. During the clamping and cooling operation, the cross-shaped sliding seat 12 is driven to slide. When the cross-shaped sliding seat 12 moves and contacts the limit switch 19 which is on the same horizontal line, the sliding motion of the cross-shaped sliding seat 12 causes the contact to move, thereby cutting off the circuit that controls the start of welding processing, ensuring the stability of the device when it is idle and preventing the device from being accidentally started.

[0036] Finally, it should be noted that the above embodiments are merely examples for clearly illustrating the present invention and are not intended to limit the implementation. Those skilled in the art can make other variations or modifications based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A cooling device for PCB board soldering heads, comprising a U-shaped support base (11), wherein the U-shaped support base (11) is provided with a sliding clamping pushing mechanism, the pushing mechanism comprising a cross-shaped sliding seat (12) and two L-shaped pushing rods (13), the cross-shaped sliding seat (12) being slidably connected inside the U-shaped support base (11), and the two L-shaped pushing rods (13) being rotatably connected inside the cross-shaped sliding seat (12), characterized in that, The outer surface of the U-shaped support base (11) is provided with two arc-shaped heat dissipation clamps (14). The two L-shaped push rods (13) are respectively rotatably connected to the outer surface of the two arc-shaped heat dissipation clamps (14). The U-shaped support base (11) is provided with a limiting mechanism for limiting the movement trajectory of the two arc-shaped heat dissipation clamps (14). The limiting mechanism includes two sets of limiting connecting rods (15). The two sets of limiting connecting rods (15) are rotatably connected to the inside of the U-shaped support base (11). The two sets of limiting connecting rods (15) are respectively rotatably connected to the outer surface of the two arc-shaped heat dissipation clamps (14). The U-shaped support base (11) is rotatably connected with a drive screw (16). The cross-shaped sliding seat (12) is threadedly connected to the outer surface of the drive screw (16). A stepper motor (17) is fixedly connected to the outer surface of the U-shaped support (11).

2. The cooling device for a PCB solder joint according to claim 1, wherein The drive screw (16) is disposed on the outer surface of the stepper motor (17); Both of the arc-shaped heat dissipation clamps (14) have feed baffles (18) threaded inside.

3. The cooling device for a PCB solder joint according to claim 2, wherein A limit switch (19) is fixedly connected to the inner surface of the U-shaped support (11); The cross-shaped sliding seat (12) and the limit switch (19) are on the same horizontal line.

4. The cooling device for a PCB solder joint according to claim 3, wherein The upper end of the U-shaped support (11) is fixedly connected to a first sliding support (21); The first sliding support (21) has a lifting connecting seat (22) slidably connected to its outer surface.

5. The cooling device for a PCB solder joint according to claim 4, wherein The inner surface of the lifting connecting seat (22) is fixedly connected to the welding head body (23), and the two arc-shaped heat dissipation clamps (14) are adapted to the welding head body (23); The first sliding support (21) is slidably connected to a second sliding support (24) at the end away from the lifting connecting seat (22).

6. The cooling device for a PCB solder joint according to claim 5, wherein The lower end of the second sliding support (24) is fixedly connected to the main body (25) of the welding device; The welding device body (25) has a set of circuit board positioning blocks (26) slidably connected inside.

7. The cooling device for PCB board soldering joints as described in claim 6, characterized in that, A rectangular slider (27) is fixedly connected to the lower end of each of the circuit board positioning blocks (26); Among them, a group of rectangular sliders (27) are all slidably connected inside the main body (25) of the welding device.

8. The cooling device for a PCB solder joint according to claim 7, wherein A set of springs (28) is fixedly connected to the upper end of the main body (25) of the welding device; Among them, a set of circuit board positioning blocks (26) are fixedly connected to the outer surface of a set of springs (28).

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