Automatic tin soldering machine for welding pressure sensor

Abstract

The utility model relates to the technical field of automatic tin soldering, in particular to an automatic tin soldering machine for welding a pressure sensor. Comprising an automatic tin soldering machine body base, a bearing plate, a wire clamp, a wire conveying mechanism, a welding gun push-pull mechanism, a wire feeding mechanism, a visual system and a welding control system. A wire clamp is designed to fix a fixed-length and flexible wire and prevent deformation, a double-layer replaceable bearing plate clamping groove is designed to accurately position a sensor and the wire clamp, an electric clamping jaw is matched with the clamping clamp to stably convey the wire, an electromagnet push-pull mechanism accurately controls a welding gun to advance and retreat, and a visual system detects the position of a welding spot in real time to ensure the welding quality. The wire feeding device effectively solves the problem that wire feeding is difficult when a fixed-length and flexible wire is automatically welded, eliminates the problem that manual welding quality is unstable, remarkably improves welding efficiency and consistency, and is suitable for the scene that a large batch of small workpieces are automatically welded through the fixed-length and flexible wire.

Description

Technical Field

[0001] This utility model relates to the field of automatic soldering technology, specifically to an automatic soldering machine for soldering pressure sensors. Background Technology

[0002] Pressure sensors are widely used in industrial weighing, automation control, medical equipment, and other fields. The stability and reliability of their signal transmission are highly dependent on the welding quality. Traditional manual welding suffers from low efficiency and poor consistency, while automatic soldering machines can significantly improve welding accuracy and production efficiency, meeting the manufacturing requirements of high-precision sensors.

[0003] However, since the wires are pre-cut to a fixed length and are flexible and easily swayed, the pressure sensor pin spacing is small, and soldering requires ensuring uniform solder amount and wetting at each solder joint. Furthermore, the sensor is a sensitive element and is susceptible to damage from high temperatures, necessitating precise control of the soldering iron temperature. Therefore, we propose an automatic soldering machine for soldering pressure sensors to address these existing problems. Utility Model Content

[0004] This invention proposes an automatic soldering machine for welding pressure sensors. By designing a specialized fixture, it ensures the stability of a fixed-length, flexible wire during the welding process, thus solving the problems of low efficiency and poor consistency inherent in traditional manual soldering. The technical solution adopted by this invention is as follows:

[0005] The overall installation method of an automatic soldering machine for welding pressure sensors is as follows:

[0006] An automatic soldering machine for welding pressure sensors includes an automatic soldering machine body base (1), a support plate (2), a wire clamp (3), a wire transport mechanism (4), a welding torch push-pull mechanism (5), a wire feeding mechanism (6), a vision system (7), and a welding control system (8). The support plate (2) is divided into upper and lower layers. The lower layer is fixed to the automatic soldering machine body base (1), and the upper layer is replaceable. It is provided with several slots for positioning the pressure sensor and the wire clamp (3). The wire transport mechanism (4) is fixedly connected to a vertical plate (9), which is connected to a side plate (10). The welding torch push-pull mechanism (5) and the vision system (7) are fixedly connected to the side plate (10). The wire feeding mechanism (6) is fixed to the top of the automatic soldering machine body base (1) via a horizontal plate (11).

[0007] The wire clamp (3) is provided with three wire slots, each slot fixing a wire. The front end of the clamp has a height difference of 0.5mm, which is used to flatten the front end of the wire, prevent the wire from deforming, and ensure the stability of the electric gripper (401) during the wire feeding process.

[0008] The welding torch push-pull mechanism (5) includes a push-pull mechanism adapter plate (501), an electromagnet push-pull switch (502), a movable slider (503), a linear guide rail (504), a slider adapter plate (505), a push-pull moving plate (506), and a welding torch fixing plate (507). The welding torch push-pull mechanism (5) is fixedly connected to the side plate (10) through the push-pull mechanism adapter plate (501). The electromagnet push-pull switch (502) and the linear guide rail (504) are fixed to the upper and lower parts of the push-pull mechanism adapter plate (501). The movable slider (503) is connected to the linear guide rail (504). The slider adapter plate (505) is fixedly connected to the movable slider (503). The upper end of the push-pull moving plate (506) is connected to the electromagnet push-pull switch (502), the rear end is fixedly connected to the slider adapter plate (505), and the front end is fixedly connected to the welding torch fixing plate (507) to fix the welding torch (802).

[0009] The wire transport mechanism (4) includes an electric gripper (401) and a welding torch (801) with their relative positions fixed. A clamping fixture (402) is fixedly connected to the bottom end of the electric gripper (401). The clamping fixture is provided at a certain angle for clamping the wire clamp (3).

[0010] The wire feeding mechanism (6) includes a wire feeder (601) fixed on the top of the automatic soldering machine body base (1), a wire feeding clamp (602) fixedly connected to the soldering gun fixing plate (507), and the end of the wire feeding tube (603) perpendicular to the wire clamp (3).

[0011] The vision system (7) includes a vision adapter plate (701) fixedly connected to the side plate (10), an industrial camera (702) and a ring light source (703) fixedly connected to the vision adapter plate (701), and a fixed height difference between the adapter plate (701) and the support plate (2). The welding control system (8) includes a welding control cabinet (801) placed next to the base (1) of the automatic soldering machine body, and a welding torch (802) fixed between the welding torch fixing plate (507) and the push-pull moving plate (506).

[0012] The working technology of an automatic soldering machine for welding pressure sensors is as follows:

[0013] After the automatic soldering machine is installed, it is used for on-site soldering of pressure sensors. The operating steps are as follows:

[0014] 1. Check all components of the automatic soldering machine, including the soldering gun push-pull mechanism, wire feeding mechanism, vision system, etc., to ensure that they are securely installed and not loose. Connect the power supply, start the welding control system, and check whether the welding power supply, industrial camera, ring light source and other equipment are working properly.

[0015] 2. Load the solder wire into the wire feeding tube of the wire feeding mechanism to ensure smooth wire feeding.

[0016] 3. Place the pressure sensor to be welded into the corresponding slot on the upper part of the support plate, ensuring accurate positioning. Install the wire clamp at the designated position on the support plate and use its three wire slots to secure the wire to be welded, ensuring that the front end of the wire is flattened to prevent deformation.

[0017] 4. Raise the Y-axis, start the vision system, and the industrial camera will automatically focus to detect the position of the wire clamp and solder joint. Adjust the brightness and height of the ring light source through the control system to optimize the image clarity until the pressure sensor solder joint is clearly captured, ensuring accurate welding position.

[0018] 5. The electric gripper of the wire transport mechanism clamps the wire clamp and transports the wire to the welding position. The electric gripper remains stable to ensure the wire is aligned with the welding torch.

[0019] 6. The electromagnet push-pull switch of the welding torch push-pull mechanism actuates, pushing the push-pull moving plate along the linear guide rail, bringing the welding torch closer to the welding point. The wire feeding mechanism's wire feeding clamp delivers the solder wire from the wire feeding tube to the welding point, and the welding torch is energized to heat up, completing the welding. After welding is completed, the electromagnet push-pull switch resets, and the welding torch returns to its initial position.

[0020] 7. By moving along the X and Y axes, repeat the previous steps to weld the next pressure sensor until a set of workpieces is completed. After welding one set, switch to the next set of support plates with the wire clamps and workpieces already installed, and begin the next round of welding.

[0021] Compared with the prior art, the beneficial effects of this utility model are as follows: An automatic soldering machine for welding pressure sensors has the following advantages:

[0022] 1. A special clamp is designed for wires that have been pre-cut to a fixed length and are flexible and easy to swing. The inner end of the wire clamp has three slots, and the front part has a height difference of 0.5mm to flatten the front end of the wire, prevent the flexible wire from deforming, ensure that the electric gripper feeds the wire stably and without deviation, and avoid misalignment or poor soldering caused by the flexibility of the wire.

[0023] 2. The support plate adopts a double-layer design, the upper layer is replaceable, and the slot precisely positions the wire clamp and sensor to ensure consistent welding position.

[0024] 3. The electric gripper, in conjunction with the clamping fixture, stably grasps the wire, reducing manual operation time. An electromagnet push-pull switch, combined with a linear guide rail, precisely controls the welding torch's advance and retreat, ensuring consistent welding. The wire feed tube feeds the wire horizontally, moving synchronously with the welding torch, increasing welding speed. Compared to manual welding, both efficiency and quality are improved.

[0025] 4. Automatically detects solder joint quality, identifies problems such as cold solder joints and missing solder joints and issues alarms, improves yield rate, reduces rework, and lowers manual quality inspection costs. Attached Figure Description

[0026] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0027] Figure 1 A three-dimensional view of the overall structure of an automatic soldering machine for welding pressure sensors;

[0028] Figure 2 This is a schematic diagram of the wire clamp and the wire holding method of this utility model;

[0029] Figure 3 This is a top view of the support plate of this utility model;

[0030] Figure 4 This is a front view schematic diagram of the support plate of this utility model;

[0031] Figure 5 This is a schematic diagram of the welding torch push-pull mechanism of this utility model;

[0032] Figure 6 This is a schematic diagram of the wire transport mechanism and wire feeding mechanism of this utility model;

[0033] Figure 7 This is a schematic diagram of the vision system of this utility model.

[0034] In the figure: Automatic soldering machine body base (1); support plate (2); wire clamp (3); wire transport mechanism (4); electric gripper (401); clamping fixture (402); welding torch push-pull mechanism (5); push-pull mechanism adapter plate (501); electromagnet push-pull switch (502); moving slider (503); linear guide rail (504); slider adapter plate (505); push-pull moving plate (506); welding torch fixing plate (507); wire feeding mechanism (6); wire feeder (601); wire feeding clamp (602); wire feeding tube (603); vision system (7); vision adapter plate (701); industrial camera (702); ring light source (703); welding control system (8); welding control cabinet (801); welding torch (802); vertical plate (9); side plate (10); horizontal plate (11). Detailed Implementation

[0035] The present invention will be further described below with reference to specific preferred embodiments:

[0036] An automatic soldering machine for welding pressure sensors includes an automatic soldering machine body base (1), a support plate (2), a wire clamp (3), a wire transport mechanism (4), a welding torch push-pull mechanism (5), a wire feeding mechanism (6), a vision system (7), and a welding control system (8), a vertical plate (9), a side plate (10), and a horizontal plate (11), as shown. Figure 1 As shown.

[0037] The support plate (2) consists of two layers, the lower layer of which is fixed to the base (1) of the automatic soldering machine body, and the upper layer is replaceable. It is equipped with several slots for positioning the pressure sensor and the wire clamp (3), such as... Figure 3 , Figure 4 As shown; the wire transport mechanism (4) is fixedly connected to the vertical plate (9), and the vertical plate (9) is connected to the side plate (10); the welding gun push-pull mechanism (5) and the vision system (7) are fixedly connected to the side plate (10); the wire feeding mechanism (6) is fixed to the top of the automatic soldering machine body base (1) through the horizontal plate (11).

[0038] The wire clamp (3) has three wire slots, each slot fixing one wire. The front end of the clamp has a 0.5mm height difference to flatten the front end of the wire, preventing deformation and ensuring the stability of the electric gripper (401) during wire feeding. Figure 2 As shown.

[0039] The welding torch push-pull mechanism (5) includes a push-pull mechanism adapter plate (501), an electromagnet push-pull switch (502), a movable slider (503), a linear guide rail (504), a slider adapter plate (505), a push-pull moving plate (506), and a welding torch fixing plate (507). The welding torch push-pull mechanism (5) is fixedly connected to the side plate (10) through the push-pull mechanism adapter plate (501). The electromagnet push-pull switch (502) and the linear guide rail (504) are fixed to the upper and lower parts of the push-pull mechanism adapter plate (501). The movable slider (503) is connected to the linear guide rail (504). The slider adapter plate (505) is fixedly connected to the movable slider (503). The upper end of the push-pull moving plate (506) is connected to the electromagnet push-pull switch (502), the rear end is fixedly connected to the slider adapter plate (505), and the front end is fixedly connected to the welding torch fixing plate (507) to fix the welding torch (802). Figure 5 As shown.

[0040] The wire transport mechanism (4) includes an electric gripper (401) fixed in relative position to the soldering gun (801), a clamping fixture (402) fixedly connected to the bottom end of the electric gripper (401), and the clamping fixture is provided at a certain angle for clamping the wire clamp (3). The wire feeding mechanism (6) includes a wire feeder (601) fixed to the top of the automatic soldering machine body base (1), a wire feeding fixture (602) fixedly connected to the soldering gun fixing plate (507), and the end of the wire feeding tube (603) perpendicular to the wire clamp (3). Figure 6 As shown.

[0041] The vision system (7) includes a vision adapter plate (701) fixedly connected to a side plate (10), an industrial camera (702) and a ring light source (703) fixedly connected to the vision adapter plate (701), and a fixed height difference between the adapter plate (701) and the support plate (2). Figure 7 As shown. The welding control system (8) includes a welding control cabinet (801) placed next to the base (1) of the automatic soldering machine body, and a welding torch (802) fixed between the welding torch fixing plate (507) and the push-pull moving plate (506).

[0042] The working technology of an automatic soldering machine for welding pressure sensors is as follows:

[0043] After the automatic soldering machine is installed, it is used for on-site soldering of pressure sensors. The operating steps are as follows:

[0044] 1. Check all components of the automatic soldering machine, including the soldering gun push-pull mechanism, wire feeding mechanism, vision system, etc., to ensure that they are securely installed and not loose. Connect the power supply, start the welding control system, and check whether the welding power supply, industrial camera, ring light source and other equipment are working properly.

[0045] 2. Load the solder wire into the wire feeding tube of the wire feeding mechanism to ensure smooth wire feeding.

[0046] 3. Place the pressure sensor to be welded into the corresponding slot on the upper part of the support plate, ensuring accurate positioning. Install the wire clamp at the designated position on the support plate and use its three wire slots to secure the wire to be welded, ensuring that the front end of the wire is flattened to prevent deformation.

[0047] 4. Raise the Y-axis, start the vision system, and the industrial camera will automatically focus to detect the position of the wire clamp and solder joint. Adjust the brightness and height of the ring light source through the control system to optimize the image clarity until the pressure sensor solder joint is clearly captured, ensuring accurate welding position.

[0048] 5. The electric gripper of the wire transport mechanism clamps the wire clamp and transports the wire to the welding position. The electric gripper remains stable to ensure the wire is aligned with the welding torch.

[0049] 6. The electromagnet push-pull switch of the welding torch push-pull mechanism actuates, pushing the push-pull moving plate along the linear guide rail, bringing the welding torch closer to the welding point. The wire feeding mechanism's wire feeding clamp delivers the solder wire from the wire feeding tube to the welding point, and the welding torch is energized to heat up, completing the welding. After welding is completed, the electromagnet push-pull switch resets, and the welding torch returns to its initial position.

[0050] 7. By moving along the X and Y axes, repeat the previous steps to weld the next pressure sensor until a set of workpieces is completed. After welding one set, switch to the next set of support plates with the wire clamps and workpieces already installed, and begin the next round of welding.

[0051] By combining the above control method with the device of this invention and applying it to the field of automated soldering technology, the automated soldering operation of small sensors using fixed-length and flexible wires can be efficiently realized. This invention uses a dedicated wire clamp to fix the wire, and a double-layer support plate slot design to position the wire clamp and the workpiece. Combined with a high-precision vision positioning system, it meets the soldering requirements of pressure sensors. Compared with traditional manual soldering methods, it effectively avoids the risk of burns caused by the solderer coming into contact with a high-temperature soldering iron, eliminates the problem of unstable quality in manual soldering, and significantly improves soldering efficiency and product consistency. Its modular design can be quickly adapted to the soldering processes of various small workpiece production lines, reducing labor costs while ensuring soldering quality. It has significant economic benefits and practical value, and is suitable for automated soldering scenarios of small workpieces using fixed-length and flexible wires in large quantities.

Claims

1. An automatic soldering machine for welding pressure sensors, comprising an automatic soldering machine body base (1), a support plate (2), a wire clamp (3), a wire transport mechanism (4), a welding torch push-pull mechanism (5), a wire feeding mechanism (6), a vision system (7), and a welding control system (8), characterized in that, The support plate (2) is divided into upper and lower layers. The lower layer is fixed to the automatic soldering machine body base (1), and the upper layer is replaceable. It is provided with several slots for positioning the pressure sensor and the wire clamp (3). The wire transport mechanism (4) is fixedly connected to the vertical plate (9), and the vertical plate (9) is connected to the side plate (10). The soldering gun push-pull mechanism (5) and the vision system (7) are fixedly connected to the side plate (10). The wire feeding mechanism (6) is fixed to the top of the automatic soldering machine body base (1) through the horizontal plate (11).

2. An automatic soldering machine for welding pressure sensors according to claim 1, characterized in that: The wire clamp (3) is provided with three wire slots and has a height difference at the front end for fixing the wire.

3. An automatic soldering machine for welding pressure sensors according to claim 1, characterized in that: The welding torch push-pull mechanism (5) includes a push-pull mechanism adapter plate (501), an electromagnet push-pull switch (502), a movable slider (503), a linear guide rail (504), a slider adapter plate (505), a push-pull moving plate (506), and a welding torch fixing plate (507). The welding torch push-pull mechanism (5) is fixedly connected to the side plate (10) through the push-pull mechanism adapter plate (501). The electromagnet push-pull switch (502) and the linear guide rail (504) are fixed on the upper and lower parts of the push-pull mechanism adapter plate (501). The movable slider (503) is connected to the linear guide rail (504). The slider adapter plate (505) is fixedly connected to the movable slider (503). The upper end of the push-pull moving plate (506) is connected to the electromagnet push-pull switch (502). The rear end is fixedly connected to the slider adapter plate (505). The front end is fixedly connected to the welding torch fixing plate (507) to fix the welding torch (802).

4. An automatic soldering machine for welding pressure sensors according to claim 1, characterized in that: The wire transport mechanism (4) includes an electric gripper (401) and a welding torch (802) with their relative positions fixed. A clamping fixture (402) is fixedly connected to the bottom end of the electric gripper (401). The clamping fixture is provided with an angle for clamping the wire clamp (3).

5. An automatic soldering machine for welding pressure sensors according to claim 1, characterized in that: The wire feeding mechanism (6) includes a wire feeding clamp (601) fixedly connected to a welding gun fixing plate (507), and the end of the wire feeding tube (602) is perpendicular to the wire clamp (3).

6. An automatic soldering machine for welding pressure sensors according to claim 1, characterized in that: The vision system (7) includes a vision adapter plate (701) fixedly connected to a side plate (10), an industrial camera (702) and a ring light source (703) fixedly connected to the vision adapter plate (701), and the position height difference between the adapter plate (701) and the support plate (2) is fixed.

Images