Automatic soldering machine for relay

Abstract

The utility model discloses an automatic tin soldering machine for a relay, which comprises a rack, and the rack is provided with a feeding mechanism, a tin soldering mechanism, a tin soldering mechanism, a tin soldering mechanism, a tin soldering mechanism and a tin soldering mechanism, the liquid pumping mechanism comprises a supply container and a peristaltic pump, the supply container is used for containing scaling powder, and the peristaltic pump is connected with the supply container to pump the scaling powder into the supply container; the tin furnace mechanism comprises a tin cup and a tin bath, the tin cup is located in the tin bath and connected with a first lifting air cylinder, and a liquid level detection probe is arranged above the tin bath; the washing mechanism comprises a cleaning water tank; the cooling and blow-drying device comprises an air knife which is connected with an air blower; the transfer mechanical arm comprises a portal frame, the portal frame is located above the machine frame, a three-axis moving module and a clamping jaw are arranged on the portal frame, the clamping jaw is installed on the three-axis moving module, and automatic high-precision soldering tin feeding can be achieved.

Description

Technical Field

[0001] The utility model belongs to the technical field of relay soldering equipment, and more specifically relates to an automatic soldering machine for relays. Background Art

[0002] Due to product process requirements, it is necessary to solder the sampling points of the dynamic and static pieces of the product to facilitate welding the sampling points with the sampling lines or the sampling points with the circuit boards in subsequent production to ensure that there will be no cold solder joints, loose soldering, or short circuits on the circuit boards.

[0003] Currently, manual soldering is used. Manual soldering may produce the following problems, which may lead to insufficient production and unstable quality:

[0004] 1. The soldering height is not enough, which will lead to cold soldering and weak soldering during the subsequent production of the circuit board;

[0005] 2. The solder height is too high, which will cause a short circuit in the subsequent production of the circuit board;

[0006] 3. The soldering time is too long, which will cause the copper sheet to change color due to high temperature and the appearance will be poor;

[0007] 4. Since soldering is a high-temperature operation, there is a risk of high-temperature burns if the operator is not focused while working. Utility Model Content

[0008] In response to the shortcomings of the existing technology, the utility model provides an automatic soldering equipment, which includes a loading mechanism that can be used for various models of products, a liquid pumping mechanism that can always keep the flux at the same height, a transfer robot that can move quickly and position with high precision, a tin furnace mechanism that can ensure the consistency of the tin surface, a water washing mechanism that can clean chemical residues, and a cooling and drying device that can quickly blow away water stains.

[0009] To achieve the above-mentioned purpose, the present invention provides the following technical solution: an automatic soldering machine for relays, comprising a frame, on which are arranged:

[0010] A loading mechanism, which includes a fixed fixture for positioning the product;

[0011] The pumping mechanism includes a supply container and a peristaltic pump. The supply container is used to contain soldering flux. The peristaltic pump is connected to the supply container to pump the soldering flux into the supply container.

[0012] The tin furnace mechanism includes a tin cup and a tin bath. The tin cup is located in the tin bath and is connected to a first lifting cylinder. A liquid level detection probe is provided above the tin bath.

[0013] A water washing mechanism, comprising a washing tank;

[0014] A cooling and drying device, comprising an air knife connected to a blower;

[0015] The transfer robot comprises a gantry, which is located above the frame. The gantry is provided with a three-axis moving module and a clamping claw, which is installed on the three-axis moving module.

[0016] Furthermore, the feeding mechanism also includes a safety grating, which is arranged in front of the fixed fixture.

[0017] Furthermore, a fixing seat is provided below the fixing fixture, and the fixing fixture is detachably connected to the fixing seat.

[0018] Furthermore, the supply container includes a receiving tank and an overflow tank, the overflow tank surrounds the outside of the receiving tank, and the receiving tank is higher than the overflow tank, and the peristaltic pump is connected to the receiving tank.

[0019] Furthermore, the tin furnace mechanism also includes a scraper connected to a linear drive assembly, and the scraper is located above the tin cup.

[0020] Furthermore, a waste slag trough is provided on the side of the tin bath.

[0021] Furthermore, the linear drive assembly is connected to a second lifting cylinder.

[0022] Furthermore, a first heating rod and a first temperature sensor are provided in the tin bath.

[0023] Furthermore, an exhaust hood is provided above the tin bath.

[0024] Furthermore, the three-axis mobile module includes a Z-axis linear module, an X-axis linear module and a Y-axis linear module. The Y-axis linear module includes two Y-axis linear guides, which are fixed on the gantry. The Y-axis linear guides are provided with synchronous wheels and synchronous belts. The X-axis linear module is connected to the synchronous belt and is slidably connected to the Y-axis linear guide. The synchronous wheels on the two Y-axis linear guides are linked through a transmission shaft. The Z-axis linear module is connected to the X-axis linear module, and the clamp is connected to the Z-axis linear module.

[0025] Compared with the prior art, the beneficial effects of the present invention are:

[0026] 1. The use of a pump mechanism can ensure the height of the flux and reduce the pollution of chemical residues to the environment;

[0027] 2. The tin furnace mechanism can ensure the height of solder and the duration of soldering, greatly improving product quality and reducing the rate of unsatisfactory results;

[0028] 3. Temperature-controlled water cleaning can prevent residues from adhering to the product and causing poor appearance;

[0029] 4. Can quickly dry with negative ion air to prevent copper parts from being oxidized;

[0030] 5. Improve production efficiency and ensure product quality while preventing work-related injuries. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 This is a three-dimensional structural diagram of an automatic soldering machine for relays;

[0032] Figure 2 A three-dimensional structural diagram of the automatic soldering machine without the transfer robot;

[0033] Figure 3 This is a three-dimensional structural diagram of the transfer robot;

[0034] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0035] Figure 5 This is a three-dimensional structural diagram of the feeding mechanism;

[0036] Figure 6 A three-dimensional structural diagram of a supply container;

[0037] Figure 7 is a side view of a supply container;

[0038] Figure 8 It is a three-dimensional structural diagram of the tin furnace mechanism;

[0039] Figure 9 It is a side view of the tin furnace mechanism;

[0040] Figure 10 A three-dimensional structural diagram of the tin furnace mechanism with the exhaust hood removed;

[0041] Figure 11 is a cross-sectional view of the tin bath;

[0042] Figure 12 A three-dimensional structural diagram of a cleaning sink;

[0043] Figure 13 It is a three-dimensional structural diagram of the cooling and drying device;

[0044] Figure 14 It is a cross-sectional view of the cooling and drying device.

[0045] Figure numerals: 1, feeding mechanism; 11, safety grating; 12, fixing seat; 13, fixing fixture; 14, positioning hole; 15, lifting support rod; 2, pumping mechanism; 21, supply container; 211, receiving tank; 212, overflow tank; 22, raw material barrel; 23, peristaltic pump; 3, tin furnace mechanism; 311, tin cup; 3111, first lifting cylinder; 312, tin bath; 3121, first heating rod; 3122, first temperature sensor; 321, scraper; 322, linear cylinder; 3221, second lifting cylinder; 33, waste residue tank; 34, Exhaust hood; 35. Liquid level detection probe; 4. Water washing mechanism; 41. Cleaning sink; 42. Water cup; 421. Third lifting cylinder; 5. Cooling and drying device; 51. Air knife; 511. Shaft; 52. Water collecting tank; 53. Support column; 6. Transfer robot; 61. Servo motor; 62. Y-axis linear module; 621. Linear guide; 622. Synchronous wheel; 623. Synchronous belt; 63. X-axis linear module; 64. Z-axis linear module; 65. Gripper; 66. Drive shaft; 7. Output conveyor belt; 8. Product; 9. Rack; 91. Workbench. DETAILED DESCRIPTION

[0046] Reference Figures 1 to 14 The embodiment of the automatic soldering machine for relays of the utility model is further described.

[0047] In the description of the present invention, it should be noted that, for directional words, such as the terms "center", "horizontal (X)", "longitudinal (Y)", "vertical (Z)", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating directions and positional relationships are based on the directions or positional relationships shown in the accompanying drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and cannot be understood as limiting the specific protection scope of the present invention.

[0048] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features. Therefore, the terms "first" and "second" may explicitly or implicitly refer to one or more of these features. In the description of this utility model, "several" and "a number" mean two or more, unless otherwise specifically defined.

[0049] An automatic soldering machine for relays, comprising a frame 9, on which are arranged:

[0050] A feeding mechanism 1 comprising a fixing fixture 13 for positioning the product 8;

[0051] The pump mechanism 2 includes a supply container 21 and a peristaltic pump 23. The supply container 21 is used to contain soldering flux. The peristaltic pump 23 is connected to the supply container 21 to pump the soldering flux into the supply container 21.

[0052] The tin furnace mechanism 3 includes a tin cup 311 and a tin bath 312. The tin cup 311 is located in the tin bath 312 and is connected to a first lifting cylinder 3111. A liquid level detection probe 35 is provided above the tin bath 312 for detecting the height of the tin surface in the tin bath 312 so as to replenish the tin solution when it is insufficient.

[0053] A water washing mechanism 4, comprising a washing water tank 41;

[0054] A cooling and drying device 5, comprising an air knife 51, which is connected to a blower;

[0055] The transfer robot 6 includes a gantry, which is located above the frame 9. The gantry is provided with a three-axis moving module and a clamping claw 65, and the clamping claw 65 is installed on the three-axis moving module.

[0056] like Figure 2 As shown, in this embodiment, a workbench 91 is provided above the frame 9, and the loading mechanism 1, the liquid pumping mechanism 2, the tin furnace mechanism 3, the water washing mechanism 4 and the cooling and drying device 5 are arranged in sequence on the workbench 91. The moving range of the transfer robot 6 can cover the above mechanisms, that is, the transfer robot 6 can transfer the product 8 to any of the above mechanisms.

[0057] like Figure 5 As shown, in one embodiment, the feeding mechanism 1 further includes a safety light curtain 11 , which is arranged in front of the fixing fixture 13 .

[0058] The safety grating 11 can be fixed on the frame 9 or fixed to the main body of the feeding mechanism 1. It can prevent people from accidentally intruding and causing danger during the operation of the soldering machine, ensure the personal safety of the operator and avoid work-related injuries.

[0059] Preferably, a fixing seat 12 is provided below the fixing jig 13 , and the fixing jig 13 and the fixing seat 12 are detachably connected.

[0060] In one embodiment, positioning holes 14 are provided on the fixing seat 12 and the fixing jig 13, and positioning pins are inserted into the positioning holes 14. The fixing jig 13 and the fixing seat 12 can be aligned and fixed by the positioning pins. After the positioning pins are pulled out, different fixing jigs 13 can be replaced. That is, when processing different models of products 8, different fixing jigs 13 can be replaced, so that multiple products 8 can be used interchangeably.

[0061] And as Figure 5 As shown, a lifting rod 15 is preferably provided below the fixing seat 12, which can adjust the height position of the fixing fixture 13 according to actual needs. The lifting rod 15 can be a screw and barrel matching structure.

[0062] In one embodiment, the supply container 21 includes a receiving tank 211 and an overflow tank 212 . The overflow tank 212 surrounds the outside of the receiving tank 211 , and the receiving tank 211 is higher than the overflow tank 212 . The peristaltic pump 23 is connected to the receiving tank 211 .

[0063] like Figure 7 As shown, the outside of the supply container 21 is provided with a flux raw material barrel 22, which is connected to the receiving tank 211 through a peristaltic pump 23. The flux is pumped into the receiving tank 211 through the peristaltic pump 23 to fill the receiving tank 211 with flux. The precise peristaltic pump 23 can always ensure the liquid level height and the liquid level does not fluctuate. Excess flux can be recovered through the outside and the overflow tank 212.

[0064] like Figure 6 As shown, the supply container 21 is made entirely of PP material to avoid corrosion by the flux.

[0065] like Figure 10 As shown, in one embodiment, the tin furnace mechanism 3 further includes a scraper 321 , the scraper 321 is connected to a linear drive assembly, and the scraper 321 is located above the tin cup 311 .

[0066] In this embodiment, the tin bath 312 is filled with tin solution. The action of the first lifting cylinder 3111 can make the tin cup 311 completely immersed in the tin bath 312 to hold the tin solution. The tin cup 311 scoops up the tin to ensure the uniform height during soldering and avoid burns to other parts of the body.

[0067] The linear drive component can be a linear cylinder 322 or a linear motor. For example, the linear cylinder 322 Figure 10 As shown, the length direction of the entire tin bath 312 and the tin cup 311 extends along the X direction, and the linear cylinder 322 is arranged along the X direction, which drives the scraper 321 to reciprocate and can scrape off the oxide layer on the surface of the tin cup 311.

[0068] like Figure 10 As shown, a waste slag trough 33 is preferably provided on the side of the tin bath 312 . At this time, the waste slag trough 33 is located at the end of the tin bath 312 in the X direction, and the oxide layer scraped off by the scraper 321 is transferred to the waste slag trough 33 .

[0069] like Figure 8-10 As shown, the linear drive assembly is preferably connected to a second lifting cylinder 3221.

[0070] The second lifting cylinder 3221 can control and adjust the height of the linear cylinder 322 and the scraper 321 , thereby adjusting the thickness of the oxide layer scraped off from the tin cup 311 by the scraper 321 .

[0071] like Figure 11 As shown, preferably, a first heating rod 3121 and a first temperature sensor 3122 are provided in the tin bath 312 .

[0072] The tin solution in the tin bath 312 is heated by the first heating rod 3121 and cooperates with the first temperature sensor 3122 to keep the tin solution within a certain temperature range. The shell of the tin bath 312 is preferably a hollow shell, which can effectively achieve the purpose of heat insulation.

[0073] like Figure 8 and 9 As shown, an exhaust hood 34 is preferably provided above the tin bath 312 . The exhaust hood 34 has a negative pressure, which can extract harmful gases to avoid occupational diseases.

[0074] like Figure 12 As shown, in one embodiment, the structure of the cleaning water tank 41 is basically the same as that of the tin tank 312, a water cup 42 is provided inside it, and the water cup 42 is connected to the third lifting cylinder 421, and a second heating rod and a second temperature sensor are provided in the cleaning water tank 41.

[0075] Clean water is filled into the cleaning tank 41, and the water cup 42 is raised and lowered in the cleaning tank 41 by the third lifting cylinder 421 to be filled with water. The product 8 enters the water cup 42 to clean chemical residues, and the cooperation of the second heating rod and the second temperature sensor can maintain the temperature of the clean water.

[0076] like Figure 13 and 14 As shown, in one embodiment, a water collecting trough 52 is provided in front of the wind knife 51, and the water stains blown away by the wind knife 51 fall into the water collecting trough 52, wherein a support column 53 is provided below the wind knife 51, and the wind knife 51 and the support column 53 are connected by an axis 511, and an axis hole and an opening passing through the axis hole and the outside are provided on the support column 53, and a locking screw is provided at the opening, and the axis 511 of the wind knife 51 can be fixed to the support column 53 by the locking screw, and then the angle of the wind knife 51 can be adjusted according to the different products 8 to control the angle of the blown wind, wherein the wind adopts negative ion wind.

[0077] Preferably, an output conveyor belt 7 is provided after the cooling and drying device 5 , and the processed products 8 are placed on the output conveyor belt 7 and transferred to the next process.

[0078] like Figure 3 and 4As shown, in one embodiment, the three-axis moving module includes a Z-axis linear module 64, an X-axis linear module 63 and a Y-axis linear module 62, and the Y-axis linear module 62 includes two Y-axis linear guides 621, the Y-axis linear guide 621 is fixed on the gantry, and a synchronous wheel 622 and a synchronous belt 623 are provided on the Y-axis linear guide 621. The X-axis linear module 63 is connected to the synchronous belt 623 and is slidably connected to the Y-axis linear guide 621. The synchronous wheels 622 on the two Y-axis linear guides 621 are linked through a transmission shaft 66, the Z-axis linear module 64 is connected to the X-axis linear module 63, and the clamp 65 is connected to the Z-axis linear module 64.

[0079] The gantry spans the entire workbench 91, and the synchronous belt 623 is stretched by the synchronous wheel 622, one of which is connected to the servo motor 61. When the servo motor 61 is in motion, the two synchronous belts 623 are moved simultaneously through the transmission shaft 66, thereby controlling the X-axis linear module 63 to move along the Y-axis linear guide 621. This avoids jitter, rail gnawing and other problems caused by the asynchronous response of the two servo motors 61 when working. Compared with linear bearings, the linear guide 621 has a higher load and runs more smoothly; the Z-axis linear module 64 can be moved along the X-direction through the X-axis linear module 63, and the Z-axis linear module 64 can drive the clamp 65 to move up and down along the Z direction, wherein the clamp 65 and the Z-axis linear module 64 are detachably connected, that is, different clamps 65 can be replaced according to different products 8.

[0080] The working process is as follows:

[0081] S1. First, replace the corresponding clamp 65 and the fixing fixture 13 according to the model of the product 8, adjust the angle of the air knife 51, and set the time and height of the soldering of the product 8 by the manipulator in advance;

[0082] S2. Place the product 8 on the fixed fixture 13;

[0083] S3. Use the transfer robot 6 to grab the product 8 on the fixed fixture 13 and move it to the pump mechanism 2. The peristaltic pump 23 in the pump mechanism 2 keeps the holding tank 211 full of flux and the liquid level stable. Here, the product 8 contacts and adheres to the flux, and the excess flux flows into the overflow tank 212 for storage.

[0084] S4. The transfer robot 6 transfers the product 8 to the tin furnace mechanism 3. Here, the tin cup 311 is filled with tin solution from the tin tank 312 and raised. The scraper 321, driven by the linear cylinder 322, scrapes off the oxide layer on the surface of the tin cup 311. Here, the product 8 contacts the tin solution and is soldered. By initially setting the action of the transfer robot 6, the soldering time and height can be controlled to ensure uniformity for all products 8. Harmful gases generated during the process are extracted and treated by the exhaust hood 34 to keep the air on site clean.

[0085] S4. The transfer robot 6 transfers the product 8 to the water washing mechanism 4. Here, the water cup 42 scoops clean water from the washing tank 41 and lifts it up. The product 8 is washed in contact with the clean water to prevent residue from adhering to the product 8 and causing poor appearance of the product 8.

[0086] S5, the transfer robot 6 transfers the product 8 to the cooling and drying device 5, where the product 8 is placed in the water collection tank 52, and the negative ion wind blown by the wind knife 51 dries the water stains on the surface of the product 8 to prevent poor oxidation of the copper parts;

[0087] S6, the transfer robot 6 transfers the product 8 to the output conveyor belt 7 to enter the next process.

[0088] The above description is merely a preferred embodiment of the present invention. The scope of protection of the present invention is not limited to the above embodiment. All technical solutions based on the concept of the present invention are within the scope of protection of the present invention. It should be noted that for those skilled in the art, certain improvements and modifications that do not depart from the principles of the present invention should also be considered within the scope of protection of the present invention.

Claims

1. An automatic soldering machine for relays, characterized in that: The invention comprises a frame, on which are arranged: A feeding mechanism, which includes a fixed fixture for positioning the product; A pump mechanism includes a supply container and a peristaltic pump, wherein the supply container is used to contain soldering flux, and the peristaltic pump is connected to the supply container to pump the soldering flux into the supply container; A tin furnace mechanism, comprising a tin cup and a tin tank, wherein the tin cup is located in the tin tank, the tin cup is connected to a first lifting cylinder, and a liquid level detection probe is arranged above the tin tank; A water washing mechanism, which includes a washing sink; A cooling and drying device, comprising an air knife connected to a blower; The transfer robot comprises a gantry, which is located above a frame. A three-axis moving module and a clamp are arranged on the gantry, and the clamp is mounted on the three-axis moving module.

2. The automatic soldering machine for relays according to claim 1, characterized in that: The feeding mechanism also includes a safety grating, which is arranged in front of the fixed fixture.

3. The automatic soldering machine for relays according to claim 2, characterized in that: A fixing seat is arranged below the fixing fixture, and the fixing fixture is detachably connected to the fixing seat.

4. The automatic soldering machine for relays according to claim 1, characterized in that: The supply container comprises a containing tank and an overflow tank, wherein the overflow tank surrounds the outside of the containing tank and the containing tank is higher than the overflow tank, and the peristaltic pump is connected to the containing tank.

5. The automatic soldering machine for relays according to claim 1, characterized in that: The tin furnace mechanism also includes a scraper, which is connected to a linear drive assembly and is located above the tin cup.

6. The automatic soldering machine for relays according to claim 5, characterized in that: A waste slag tank is arranged on the side of the tin tank.

7. The automatic soldering machine for relays according to claim 6, characterized in that: The linear drive assembly is connected to a second lifting cylinder.

8. The automatic soldering machine for relays according to claim 7, characterized in that: A first heating rod and a first temperature sensor are arranged in the tin bath.

9. The automatic soldering machine for relays according to claim 8, characterized in that: An exhaust hood is arranged above the tin bath.

10. The automatic soldering machine for relays according to claim 1, characterized in that: The three-axis mobile module includes a Z-axis linear module, an X-axis linear module and a Y-axis linear module. The Y-axis linear module includes two Y-axis linear guides, the Y-axis linear guides are fixed on the gantry, and a synchronous wheel and a synchronous belt are arranged on the Y-axis linear guide. The X-axis linear module is connected to the synchronous belt and is slidably connected to the Y-axis linear guide. The synchronous wheels on the two Y-axis linear guides are linked by a transmission shaft. The Z-axis linear module is connected to the X-axis linear module, and the clamp is connected to the Z-axis linear module.

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