Automatic tin soldering machine and tin soldering method thereof

Abstract

The invention discloses an automatic soldering machine and a soldering method thereof and relates to the field of soldering processing. The tin soldering method comprises the steps that for each welding spot of a workpiece to be subjected to tin soldering, a preset tin soldering task on the welding spot is obtained, the tin soldering task comprises tin soldering process parameters, and the tin soldering process parameters at least comprise the welding spot position, the welding temperature and the tin wire feeding mode; the current temperature of a soldering iron set unit is obtained through a soldering station system, and when the current temperature of the soldering iron set unit reaches the welding temperature of the welding spot, the soldering iron set unit is controlled to move to the position of the welding spot; and a tin wire feeding unit is controlled to provide tin wires for the welding spots according to the tin wire feeding mode, and the soldering station system heats a soldering iron set unit according to the welding temperature so as to complete welding of each welding spot of the workpiece to be subjected to tin soldering.

Description

Technical Field

[0001] The invention relates to the field of solder processing, and in particular to an automatic soldering machine and a soldering method thereof. Background Art

[0002] In the current common automatic soldering machine operation, the automatic soldering machine's motion control system and soldering station heating system are two completely independent units, and there is no data or status interaction between them. Therefore, during the soldering operation, the temperature of the solder is fixed, and the soldering operation of one or several solder joints is completed at the same temperature from the beginning to the end. This soldering mode is often prone to undesirable phenomena such as the pads of some solder joints falling off and cold solder joints. For example, some large solder joints have insufficient molten tin due to insufficient temperature, resulting in cold solder joints, and some small solder joints have their pads burned and fall off due to excessively high temperatures. Therefore, when a certain fixed temperature value is set, the soldering operation can often only select solder joints with similar size, shape, and solder amount in a batch.

[0003] If the solder joints in the same workpiece vary greatly in size, shape, and solder quantity, they may need to be completed in several batches at different soldering temperatures. This results in very limited objects that can be soldered in the same batch of soldering operations, and soldering operations require frequent batch changes to change different soldering process parameters to complete the desired soldering operations. Summary of the invention

[0004] The main technical problem solved by the present invention is to provide an automatic soldering machine and a soldering method thereof which can more freely solder each soldering point according to preset soldering process parameters.

[0005] According to a first aspect, an embodiment provides a soldering method, comprising:

[0006] For each soldering point of the workpiece to be soldered:

[0007] Acquire a soldering task preset on the soldering point, wherein the soldering task includes soldering process parameters, and the soldering process parameters include at least soldering point position, soldering temperature and solder wire feeding method;

[0008] Using the soldering station system to obtain the current temperature of the soldering iron assembly unit, when the current temperature of the soldering iron assembly unit reaches the soldering temperature of the soldering point, controlling the soldering iron assembly unit to move to the soldering point position;

[0009] The tin wire feeding unit is controlled to provide tin wire to the soldering point according to the tin wire feeding method, and the soldering station system heats the soldering iron group unit according to the welding temperature to complete the welding of each soldering point of the workpiece to be soldered.

[0010] In one embodiment, the tin wire feeding method includes the number of tin feeding sections, tin feeding speed, pre-tin feeding length, tin feeding length, tin feeding delay, tin return speed and tin return length;

[0011] The number of tin feeding sections indicates the number of times each soldering point needs to be soldered; the tin feeding speed indicates the speed at which the tin wire enters each soldering point during each soldering; the pre-tin feeding length indicates the length of the tin wire fed into the soldering iron assembly unit before each soldering of each soldering point; the tin feeding length indicates the length of the tin wire entering each soldering point during each soldering; the tin feeding delay indicates the waiting time for tin feeding before each soldering of each soldering point; the tin return speed indicates the speed at which the tin wire is retracted from each soldering point after soldering is completed; the tin return length indicates the length of the tin wire retracted from each soldering point after soldering is completed.

[0012] In one embodiment, the soldering process parameters further include soldering mode, soldering iron feeding mode and auxiliary soldering; the soldering mode includes spot welding or pull welding; the soldering iron feeding mode includes vertical feeding or tilted setting angle feeding; the auxiliary soldering includes vertical shaking and left and right shaking;

[0013] Acquire the soldering mode and the soldering iron feeding method, and control the soldering iron group unit to solder the soldering point according to the soldering mode and the soldering iron feeding method;

[0014] When the soldering task includes auxiliary soldering, after controlling the tin wire feeding unit to complete the second-stage tin feeding and / or the third-stage tin feeding, the soldering iron group unit is controlled to shake the tin according to the auxiliary solder.

[0015] In one embodiment, the soldering method further comprises:

[0016] The soldering station system is used to obtain the current temperature of the soldering iron assembly unit in a cyclic manner at intervals of set time. When the current temperature of the soldering iron assembly unit is abnormal, the soldering station system is used to control the soldering iron assembly unit to stop working and lift the soldering iron assembly unit away from the component to be soldered.

[0017] In one embodiment, the soldering method further comprises:

[0018] When completing the soldering task of one or more consecutive soldering points, if no soldering task of the soldering point is obtained within the set time, the soldering station system is controlled to enter the standby state or the shutdown state to stop the heating of the soldering iron group unit.

[0019] According to the second aspect, an automatic soldering machine is provided in one embodiment, comprising:

[0020] A tin wire feeding unit is used to provide tin wire to each soldering point;

[0021] A soldering iron assembly unit, used for heating the tin wire provided by the tin wire feeding unit to solder the workpiece to be soldered;

[0022] A soldering station system, connected to the soldering iron assembly unit, and used to control the heating temperature of the soldering iron assembly unit;

[0023] A motion control system, connecting the soldering station system, the tin wire feeding unit and the soldering iron assembly unit;

[0024] For each soldering point on the workpiece to be soldered,

[0025] The motion control system obtains a preset soldering task on the soldering point, wherein the soldering task includes soldering process parameters, and the soldering process parameters include at least a soldering point position, a soldering temperature, and a tin wire feeding method; the motion control system controls the soldering iron group unit to move to the soldering point position, and the motion control system also controls the tin wire feeding unit to provide tin wire to the soldering point according to the tin wire feeding method, and sends the welding temperature to the soldering station system, and the soldering station system heats the soldering iron group unit according to the welding temperature to complete the welding of each solder point of the workpiece to be soldered.

[0026] In one embodiment, the tin wire feeding method includes the number of tin feeding sections, tin feeding speed, pre-tin feeding length, tin feeding length, tin feeding delay, tin return speed and tin return length;

[0027] The number of tin feeding sections indicates the number of times each soldering point needs to be soldered; the tin feeding speed indicates the speed at which the tin wire enters each soldering point during each soldering; the pre-tin feeding length indicates the length of the tin wire fed into the soldering iron assembly unit before each soldering of each soldering point; the tin feeding length indicates the length of the tin wire entering each soldering point during each soldering; the tin feeding delay indicates the waiting time for tin feeding before each soldering of each soldering point; the tin return speed indicates the speed at which the tin wire is retracted from each soldering point after soldering is completed; the tin return length indicates the length of the tin wire retracted from each soldering point after soldering is completed.

[0028] In one embodiment, the soldering process parameters further include soldering mode, soldering iron feeding mode and auxiliary soldering; the soldering mode includes spot welding or pull welding; the soldering iron feeding mode includes vertical feeding or tilted setting angle feeding; the auxiliary soldering includes vertical shaking and left and right shaking;

[0029] Acquire the soldering mode and the soldering iron feeding method, and control the soldering iron group unit to solder the soldering point according to the soldering mode and the soldering iron feeding method;

[0030] When the soldering task includes auxiliary soldering, after controlling the tin wire feeding unit to complete the second-stage tin feeding and / or the third-stage tin feeding, the soldering iron group unit is controlled to shake the tin according to the auxiliary solder.

[0031] In one embodiment, the motion control system uses the soldering station system to obtain the current temperature of the soldering iron assembly unit in a cyclic manner at set intervals. When the current temperature of the soldering iron assembly unit is abnormal, the motion control system uses the soldering station system to control the soldering iron assembly unit to stop working and lift the soldering iron assembly unit away from the component to be soldered.

[0032] In one embodiment, when the motion control system completes the welding task of one or more consecutive solder points, if no soldering task of the solder point is obtained within a set time, the soldering station system is controlled to enter a standby state or a shutdown state to stop the heating of the soldering iron group unit.

[0033] According to the automatic soldering machine and soldering method of the above-mentioned embodiment, before each soldering, soldering is performed according to the soldering process parameters in the preset soldering task for each soldering point. Before entering the soldering of each soldering point, ensure that the current temperature of the soldering iron group unit reaches the soldering temperature of the soldering point, thereby solving a series of soldering problems caused by inappropriate temperature, such as cold soldering, pad shedding, and tin blocking caused by too high or too low soldering temperature at different soldering points. In addition, the preset soldering process parameters also include a tin wire feeding method, so that when soldering each soldering point, in addition to the welding temperature, the tin wire feeding method can also be set according to the different requirements of the soldering point, ensuring that the setting freedom during the welding process of each soldering point in the workpiece to be soldered is higher, more able to meet the actual engineering situation, and can ensure that each soldering point can be accurately welded. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 A schematic diagram of the structure of an automatic soldering machine in an embodiment;

[0035] Figure 2 Schematic diagram of the feeding method of the soldering iron of an automatic soldering machine in an embodiment Figure 1 ;

[0036] Figure 3 Schematic diagram of the feeding method of the soldering iron of an automatic soldering machine in an embodiment Figure 2 ;

[0037] Figure 4 A schematic diagram of vertical tin shaking of an automatic soldering machine in an embodiment;

[0038] Figure 5 A schematic diagram of an automatic soldering machine shaking tin left and right in an embodiment;

[0039] Figure 6A schematic diagram of abnormal temperature determination of an automatic soldering machine in an embodiment;

[0040] Figure 7 FIG. 4 is a flow chart of a soldering method in another embodiment. DETAILED DESCRIPTION

[0041] The present invention is further described in detail below by specific embodiments in conjunction with the accompanying drawings. Wherein similar elements in different embodiments adopt associated similar element numbers. In the following embodiments, many detailed descriptions are for making the present application better understood. However, those skilled in the art can easily recognize that some features can be omitted in different situations, or can be replaced by other elements, materials, methods. In some cases, some operations related to the present application are not shown or described in the specification, this is to avoid the core part of the present application being overwhelmed by too much description, and for those skilled in the art, it is not necessary to describe these related operations in detail, and they can fully understand the related operations according to the description in the specification and the general technical knowledge in the art.

[0042] In addition, the features, operations or characteristics described in the specification can be combined in any appropriate manner to form various implementations. At the same time, the steps or actions in the method description can also be interchanged or adjusted in a manner that is obvious to those skilled in the art. Therefore, the various sequences in the specification and the drawings are only for the purpose of clearly describing a certain embodiment and are not meant to be a required sequence, unless otherwise specified that a certain sequence must be followed.

[0043] The serial numbers of the components in this document, such as "first", "second", etc., are only used to distinguish the objects described and do not have any order or technical meaning. The "connection" and "coupling" mentioned in this application, unless otherwise specified, include direct and indirect connections (couplings).

[0044] In order to solve the problem that the soldering temperature and soldering method cannot be adjusted when the automatic soldering machine is operating at different soldering points, which leads to the problem that some soldering points have pads falling off, components being burned, and cold soldering due to different temperatures and soldering methods. The present application provides an automatic soldering machine and a soldering method thereof, which utilizes a motion controller and a soldering station system for coordinated control, and provides set soldering process parameters for each soldering point, thereby ensuring that each soldering point on the workpiece to be soldered can be completely soldered, which is described in detail below.

[0045] Please refer to Figure 1 In one embodiment, an automatic soldering machine 10 is provided, including a solder wire feeding unit 11, a soldering iron group unit 12, a soldering station system 13 and a motion control system 14.

[0046] In one embodiment, the motion control system 14 and the soldering station system 13 (i.e., the soldering iron heating system) are connected at the physical layer using an RS485 (2-wire) connector, and the communication protocol uses the MODBUS-RTU protocol for communication. During the communication process of the automatic soldering machine 10, the motion control system 14 serves as the master station and the soldering station system 13 serves as the slave station. The motion control system 14 collects data items such as the current temperature, current set temperature, current set temperature unit, current power on / off state, and current error state of the soldering station system 13 in an interval cycle. The motion control system 14 controls data items such as the heating temperature, temperature unit setting, power on / off, and standby of the soldering station system 13.

[0047] In one embodiment, the motion control system 14 controls the tin wire feeding unit 11 to provide tin wire to each solder joint of the component to be soldered at a fixed time, speed and quantity, wherein the tin wire feeding unit 11 has the function of detecting whether the current solder (tin wire) is sufficient, and feeds back the detection result signal to the motion control system 14 in real time (detecting the tin wire in the form of a tin wire sensor).

[0048] In one embodiment, the soldering station system 13 controls the connection to the soldering iron assembly unit 12, and performs identification, diagnosis and heating control on the soldering iron assembly unit 12. The soldering iron assembly unit 12 is placed on an axis controlled by a motion control system 14. When soldering the component to be soldered, the soldering iron assembly unit 12 follows the movement of the axis and is applied to the solder point to heat the solder wire, the solder pad of the solder point and the pin of the component.

[0049] In one embodiment, for each soldering point on the workpiece to be soldered, a preset soldering task for each soldering point is written into the motion control system 14, and the soldering process parameters of each soldering point are written into the soldering task, and the soldering process parameters include soldering point position, welding temperature, tin wire feeding mode, soldering mode, soldering iron feeding mode and auxiliary solder. When the motion control system 14 solders each soldering point, the motion control system 14 controls the tin wire feeding unit 11 to provide solder to the soldering point according to the tin wire feeding mode, heats the soldering iron assembly unit 12 according to the welding temperature, and controls the soldering iron assembly unit 12 to move to the soldering point position after reaching the welding temperature of each soldering point for welding. During the welding process, the soldering point is welded according to the soldering mode and the soldering iron feeding mode. If there is auxiliary solder in the welding process of the soldering point, the motion control system 14 controls the tin wire feeding unit 11 to weld the soldering point according to the auxiliary solder.

[0050] It should be noted that auxiliary soldering is tin shaking and tilting feeding, which is completed by the motion control system 14 controlling the coordinated movement of each axis. During the tin shaking process, the tin wire feeding unit 11 may also be triggered to feed tin to the soldering point, that is, feeding while shaking.

[0051] In one embodiment, the tin wire feeding method includes the number of tin feeding sections, the tin feeding speed, the pre-tin feeding length, the tin feeding length, the tin feeding delay, the tin return speed and the tin return length.

[0052] In one embodiment, the number of tin feeding stages indicates the number of times each soldering point needs to be soldered, for example, the soldering point is continuously fed with tin for one stage, two stages, and three stages, etc. The specific number of times each soldering point needs to be soldered can be set according to the position and requirements of the soldering point.

[0053] It should be noted that when the soldering task written in the motion control system 14 includes auxiliary soldering, since the auxiliary soldering is completed after the motion control system 14 controls the tin wire feeding unit 11 to complete the second-stage tin feeding and / or the third-stage tin feeding, the motion control system 14 starts to shake the soldering iron group unit 12 up and down or left and right, so that the molten tin merges with the soldering pad to achieve the ideal soldering effect.

[0054] In one embodiment, the tin feeding speed refers to the speed at which the tin wire enters each soldering point during each soldering, usually in millimeters per second (mm / s). This parameter affects the stability of tin feeding and the filling amount of tin.

[0055] In one embodiment, the pre-tinning length refers to the length of the soldering iron tip in the soldering iron assembly unit 12 before each soldering of each soldering point, and the unit is usually millimeter (mm). It is to ensure that the soldering iron tip has a larger contact area with the soldering pad and the component pin, so that the heat transfer is faster and better.

[0056] In one embodiment, the tin feeding length refers to the length of the tin wire entering each solder joint during each soldering, in millimeters (mm). If a solder joint includes two stages of tin feeding, it is to increase the amount of tin in the solder joint and ensure the firmness of the solder joint. If a solder joint includes three stages of tin feeding, it is for supplementation or finishing.

[0057] In one embodiment, the tin feeding delay indicates the waiting time for tin feeding of each solder joint before each soldering, in seconds (s), with a resolution of 0.1 seconds. If a solder joint includes two-stage tin feeding, it is to ensure that the tin point has time to be melted and cover the solder joint. If a solder joint includes three-stage tin feeding, it is to prevent excessive tin feeding in a single time in the two-stage tin feeding stage, resulting in insufficient heat of the soldering iron group unit and causing welding quality problems.

[0058] In one embodiment, the tin return speed refers to the speed at which the tin wire is retracted from each solder joint after soldering is completed, and the unit is millimeter per second (mm / s). A reasonable tin return speed helps to avoid solder joint wire drawing or excess tin wire residue.

[0059] In one embodiment, the tin return length refers to the length of the tin wire retracted from each soldering point after soldering is completed, and the unit is millimeter (mm). The tin return is to prevent the tin wire at the forefront and the static part close to the soldering iron tip from being melted away unintentionally and fused to the soldering point, causing the undesirable phenomenon of excessive tin or tin accumulation.

[0060] In one embodiment, the soldering mode includes spot welding or pull welding. Spot welding is performed by fixing the soldering iron tip on one soldering point, and pull welding is performed by moving the soldering iron tip on a plurality of soldering points in a continuous track.

[0061] Please refer to Figure 2 In one embodiment, the soldering iron feeding method includes vertical feeding or feeding at an inclined set angle. When the pins of the component to be soldered are irregularly deformed such as bending, the vertical descent of the soldering iron will be blocked by the deformed pins of the component to be soldered and cannot be dropped to the pad, resulting in the molten tin being unable to flow onto the pad. Even if it flows onto the pad, it cannot fuse with the molten tin because the pad has no heat, thereby causing false soldering and cold soldering. In the present application, when the solder joints of the component to be soldered cannot be soldered in the case of vertical feeding, the motion control system 14 controls the soldering iron group unit 12 to feed at an inclined set angle.

[0062] Please refer to Figure 3 In one embodiment, the setting angle can be set to a feeding method of 1 to 89 degrees, such as angle a in the figure, which can avoid the phenomenon of false welding and cold welding caused by the vertical feeding method. Among them, the plane where angle a is located can be any plane that rotates 360 degrees around the central axis and is at a vertical angle to the plane where the pad is located, that is, the feeding route of the soldering iron group unit 12 can be any straight line that rotates 360 degrees around the central axis and is 1 to 89 degrees to the pad.

[0063] Please refer to Figure 4 and Figure 5 In one embodiment, when the fluidity of the hot-melt tin on the solder joint of the soldering component is not strong, it will cause the solder pad to be incomplete or the solder joint to be cold, and other poor soldering problems. The automatic soldering machine 10 provided by the present application provides an auxiliary solder that can perform tin shaking after the tin wire is fed, thereby solving the poor soldering problem caused by the weak fluidity of the tin. Among them, the auxiliary solder includes such as Figure 4 Vertical tin shaking as shown and Figure 5 The left and right tin shaking shown in the figure should be set accordingly according to the differences of each soldering point.

[0064] In one embodiment, after the preset soldering process parameters of each soldering point are determined in the motion control system 14, the motion control system 14 generates corresponding process tasks according to the preset soldering process parameters, and controls the soldering station system 13, the soldering iron group unit 12 and the tin wire feeding unit 11 to perform the corresponding tasks. Before the welding work starts, the motion control system 14 obtains the current temperature of the soldering iron group unit 12 from the soldering station system 13, and determines whether the current temperature meets the preset welding conditions, that is, whether the current temperature meets the welding temperature of the soldering point. If not, the motion control system 14 triggers the soldering station system 13 to adjust the temperature of the soldering iron group unit 12 until the current temperature meets the welding temperature. Based on this, when the user presets the soldering process parameters, different soldering temperatures can be set for each soldering point, which solves the problem that the soldering machines on the market cannot set different soldering temperatures for different soldering points, causing some soldering points to be detached from the pads due to too high or too low temperatures, components to be burned or cold soldered, etc.

[0065] Please refer to Figure 6 In one embodiment, during the operation of the automatic soldering machine 10, when the motion control system 14 determines that the current temperature of the soldering iron assembly unit 12 is abnormal or other hardware failures or a manual triggering pause occurs, the motion control system 14 lifts the soldering iron assembly unit 12 still on the soldering pad to protect the soldering pad and the components to be soldered from being burned. When the abnormality is resolved and the user triggers the continuation of the soldering task, the automatic soldering machine 10 performs the subsequent soldering tasks along the tasks before the abnormality.

[0066] In one embodiment, after finishing the soldering task of one or more consecutive soldering points, if the motion control system 14 does not obtain the soldering task of the soldering point within the set time, the motion control system 14 makes a judgment according to the standby and shutdown conditions of the automatic soldering machine 10 preset by the user. If the standby condition is met, the soldering station system 13 is triggered to enter the standby state; if the shutdown condition is met, the soldering station system 13 is triggered to turn off the soldering iron heating function. Until the next soldering task comes, the motion control system 14 will trigger the soldering iron group unit 12 to adjust the temperature of the soldering iron tip to the welding temperature in the soldering process parameters set by the user. Based on this, after the last continuous soldering task is completed and the soldering station system 13 enters the standby or shutdown state, until the next soldering task comes, the automatic soldering machine 10 reduces the temperature of the soldering iron group unit 12 or turns off the soldering station system 13 to cool the soldering iron group unit 12 to a normal temperature state, so that the oxidation degree of the soldering iron group unit 12 is reduced and the life is extended.

[0067] Please refer to Figure 7 In another embodiment, a soldering method is provided, comprising the following steps:

[0068] Step S100: obtaining preset soldering process parameters on each soldering point of the component to be soldered.

[0069] In one embodiment, the tin wire feeding method includes the number of tin feeding sections, tin feeding speed, pre-tin feeding length, tin feeding length, tin feeding delay, tin return speed and tin return length. The number of tin feeding sections indicates the number of times each soldering point needs to be soldered; the tin feeding speed indicates the speed at which the tin wire enters each soldering point during each soldering; the pre-tin feeding length indicates the length of the tin wire fed into each soldering point before each soldering; the tin feeding length indicates the length of the tin wire fed into each soldering point during each soldering; the tin feeding delay indicates the waiting time for tin feeding before each soldering; the tin return speed indicates the speed at which the tin wire is withdrawn from each soldering point after soldering is completed; and the tin return length indicates the length of the tin wire withdrawn from each soldering point after soldering is completed.

[0070] In one embodiment, the soldering mode includes spot welding or pull welding. Spot welding is performed by fixing the soldering iron tip on one soldering point, and pull welding is performed by moving the soldering iron tip on a plurality of soldering points in a continuous track.

[0071] In one embodiment, the soldering iron feeding method includes vertical feeding or feeding at an inclined set angle. When the pins of the component to be soldered are irregularly deformed such as bending, the vertical descent of the soldering iron will be blocked by the deformed pins of the component to be soldered and cannot be dropped to the pad, resulting in the molten tin being unable to flow onto the pad. Even if it flows onto the pad, it cannot fuse with the molten tin because the pad has no heat, thereby causing false soldering and cold soldering. In the present application, when the solder joints of the component to be soldered cannot be soldered in the case of vertical feeding, the motion control system 14 controls the soldering iron group unit 12 to feed at an inclined set angle.

[0072] In one embodiment, when the fluidity of the hot-melt tin on the solder joint of the component to be soldered is not strong, it will cause the solder pad to be incomplete or the solder joint to be cold, and other poor soldering problems. The automatic soldering machine 10 provided by the present application provides an auxiliary solder that can perform tin shaking after the tin wire is fed, thereby solving the problem of poor soldering caused by the weak fluidity of tin. Among them, the auxiliary solder includes vertical tin shaking and left and right tin shaking, which are set accordingly according to the differences of each solder joint.

[0073] Step S200: When the current temperature of the soldering iron assembly unit reaches the soldering temperature of the soldering point, the soldering iron assembly unit is controlled to move to the soldering point position.

[0074] Step S300: Control the tin wire feeding unit to provide tin wire to the solder joint according to the tin wire feeding method, and the soldering station system heats the soldering iron group unit according to the soldering temperature.

[0075] In one embodiment, for each soldering point on the workpiece to be soldered, the preset soldering process parameters of each soldering point are written into the motion control system 14. When the motion control system 14 solders each soldering point, the motion control system 14 controls the tin wire feeding unit 11 to provide solder to the soldering point according to the tin wire feeding method, heats the soldering iron assembly unit 12 according to the welding temperature, and controls the soldering iron assembly unit 12 to move to the soldering point position after reaching the welding temperature of each soldering point for welding. During the welding process, the soldering point is welded according to the soldering mode and the soldering iron feeding method. If there is auxiliary solder in the welding process of the soldering point, the motion control system 14 controls the tin wire feeding unit 11 to weld the soldering point according to the auxiliary solder, thereby completing the welding of each soldering point.

[0076] Step S400: determining the current temperature of the soldering iron assembly unit.

[0077] In one embodiment, during the operation of the automatic soldering machine 10, when the motion control system 14 determines that the current temperature of the soldering iron assembly unit 12 is abnormal or other hardware failures occur, or when a pause is triggered manually, the motion control system 14 lifts the soldering iron assembly unit 12 that is still on the soldering pad to protect the soldering pad and the components to be soldered from being burned. When the abnormality is resolved, the user triggers the continuation of the soldering task, and the automatic soldering machine 10 performs subsequent soldering tasks along the tasks before the abnormality.

[0078] Step S500: After completing the soldering task of one or more consecutive soldering points, if no soldering task of the soldering point is obtained within a set time, the soldering station system is controlled to enter a standby state or a shutdown state.

[0079] In one embodiment, after one or more continuous soldering tasks are completed, when the motion control system 14 does not obtain the soldering task of the solder joint within the set time, the motion control system 14 makes a judgment based on the standby and shutdown conditions of the automatic soldering machine 10 preset by the user. If the standby conditions are met, the soldering station system 13 is triggered to enter the standby state; if the shutdown conditions are met, the soldering station system 13 is triggered to turn off the soldering iron heating function. Until the next soldering task comes, the motion control system 14 will trigger the soldering iron group unit 12 to adjust the temperature of the soldering iron tip to the welding temperature in the soldering process parameters set by the user. Based on this, after the last continuous soldering task is completed and the soldering station system 13 enters the standby or shutdown state, until the next soldering task comes, the automatic soldering machine 10 reduces the temperature of the soldering iron group unit 12 or turns off the soldering station system 13 to cool the soldering iron group unit 12 to a normal temperature state, so that the oxidation degree of the soldering iron group unit 12 is reduced and the life is extended.

[0080] Those skilled in the art will appreciate that all or part of the functions of the various methods in the above-mentioned embodiments can be implemented by hardware or by computer programs. When all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can be stored in a computer-readable storage medium, and the storage medium can include: read-only memory, random access memory, disk, optical disk, hard disk, etc., and the program is executed by a computer to implement the above-mentioned functions. For example, the program is stored in the memory of the device, and when the program in the memory is executed by the processor, all or part of the above-mentioned functions can be implemented. In addition, when all or part of the functions in the above-mentioned embodiments are implemented by computer programs, the program can also be stored in a storage medium such as a server, another computer, disk, optical disk, flash disk or mobile hard disk, and can be downloaded or copied and saved in the memory of the local device, or the system of the local device is updated, and when the program in the memory is executed by the processor, all or part of the functions in the above-mentioned embodiments can be implemented.

[0081] The above specific examples are used to illustrate the present invention, which are only used to help understand the present invention and are not used to limit the present invention. For those skilled in the art to which the present invention belongs, some simple deductions, modifications or substitutions can be made according to the idea of ​​the present invention.

Claims

1. A soldering method, characterized in that: include: For each soldering point of the workpiece to be soldered: Acquire a soldering task preset on the soldering point, wherein the soldering task includes soldering process parameters, and the soldering process parameters include at least soldering point position, soldering temperature and solder wire feeding method; Using the soldering station system to obtain the current temperature of the soldering iron assembly unit, when the current temperature of the soldering iron assembly unit reaches the soldering temperature of the soldering point, controlling the soldering iron assembly unit to move to the soldering point position; The tin wire feeding unit is controlled to provide tin wire to the soldering point according to the tin wire feeding method, and the soldering station system heats the soldering iron group unit according to the welding temperature to complete the welding of each soldering point of the workpiece to be soldered.

2. The soldering method according to claim 1, wherein: The tin wire feeding method includes the number of tin feeding sections, tin feeding speed, pre-tin feeding length, tin feeding length, tin feeding delay, tin return speed and tin return length; The number of tin feeding sections indicates the number of times each soldering point needs to be soldered; the tin feeding speed indicates the speed at which the tin wire enters each soldering point during each soldering; the pre-tin feeding length indicates the length of the tin wire fed into the soldering iron assembly unit before each soldering of each soldering point; the tin feeding length indicates the length of the tin wire entering each soldering point during each soldering; the tin feeding delay indicates the waiting time for tin feeding before each soldering of each soldering point; the tin return speed indicates the speed at which the tin wire is retracted from each soldering point after soldering is completed; the tin return length indicates the length of the tin wire retracted from each soldering point after soldering is completed.

3. The soldering method according to claim 2, characterized in that: The soldering process parameters also include soldering mode, soldering iron feeding mode and auxiliary soldering; the soldering mode includes spot welding or pull welding; the soldering iron feeding mode includes vertical feeding or tilted setting angle feeding; the auxiliary soldering includes vertical shaking and left and right shaking; Acquire the soldering mode and the soldering iron feeding method, and control the soldering iron group unit to solder the soldering point according to the soldering mode and the soldering iron feeding method; When the soldering task includes auxiliary soldering, after controlling the tin wire feeding unit to complete the second-stage tin feeding and / or the third-stage tin feeding, the soldering iron group unit is controlled to shake the tin according to the auxiliary solder.

4. The soldering method according to claim 1, wherein: The soldering method further comprises: The soldering station system is used to obtain the current temperature of the soldering iron assembly unit in a cyclic manner at intervals of set time. When the current temperature of the soldering iron assembly unit is abnormal, the soldering station system is used to control the soldering iron assembly unit to stop working and lift the soldering iron assembly unit away from the component to be soldered.

5. The soldering method according to claim 1, wherein: The soldering method further comprises: When completing the soldering task of one or more consecutive soldering points, if no soldering task of the soldering point is obtained within the set time, the soldering station system is controlled to enter the standby state or the shutdown state to stop the heating of the soldering iron group unit.

6. An automatic soldering machine, characterized in that: include: A tin wire feeding unit is used to provide tin wire to each soldering point; A soldering iron assembly unit, used for heating the tin wire provided by the tin wire feeding unit to solder the workpiece to be soldered; A soldering station system, connected to the soldering iron assembly unit, and used to control the heating temperature of the soldering iron assembly unit; A motion control system, connecting the soldering station system, the tin wire feeding unit and the soldering iron assembly unit; For each soldering point on the workpiece to be soldered, The motion control system obtains a preset soldering task on the soldering point, wherein the soldering task includes soldering process parameters, and the soldering process parameters include at least a soldering point position, a soldering temperature, and a tin wire feeding method; the motion control system controls the soldering iron group unit to move to the soldering point position, and the motion control system also controls the tin wire feeding unit to provide tin wire to the soldering point according to the tin wire feeding method, and sends the welding temperature to the soldering station system, and the soldering station system heats the soldering iron group unit according to the welding temperature to complete the welding of each solder point of the workpiece to be soldered.

7. The automatic soldering machine according to claim 6, characterized in that: The tin wire feeding method includes the number of tin feeding sections, tin feeding speed, pre-tin feeding length, tin feeding length, tin feeding delay, tin return speed and tin return length; The number of tin feeding sections indicates the number of times each soldering point needs to be soldered; the tin feeding speed indicates the speed at which the tin wire enters each soldering point during each soldering; the pre-tin feeding length indicates the length of the tin wire fed into the soldering iron assembly unit before each soldering of each soldering point; the tin feeding length indicates the length of the tin wire entering each soldering point during each soldering; the tin feeding delay indicates the waiting time for tin feeding before each soldering of each soldering point; the tin return speed indicates the speed at which the tin wire is retracted from each soldering point after soldering is completed; the tin return length indicates the length of the tin wire retracted from each soldering point after soldering is completed.

8. The automatic soldering machine according to claim 7, characterized in that: The soldering process parameters also include soldering mode, soldering iron feeding mode and auxiliary soldering; the soldering mode includes spot welding or pull welding; the soldering iron feeding mode includes vertical feeding or tilted setting angle feeding; the auxiliary soldering includes vertical shaking and left and right shaking; Acquire the soldering mode and the soldering iron feeding method, and control the soldering iron group unit to solder the soldering point according to the soldering mode and the soldering iron feeding method; When the soldering task includes auxiliary soldering, after controlling the tin wire feeding unit to complete the second-stage tin feeding and / or the third-stage tin feeding, the soldering iron group unit is controlled to shake the tin according to the auxiliary solder.

9. The automatic soldering machine according to claim 6, characterized in that: The motion control system uses the soldering station system to obtain the current temperature of the soldering iron group unit in a cyclic manner at set intervals. When the current temperature of the soldering iron group unit is abnormal, the motion control system uses the soldering station system to control the soldering iron group unit to stop working and lift the soldering iron group unit away from the component to be soldered.

10. The automatic soldering machine according to claim 6, characterized in that: When the motion control system completes the welding task of one or more consecutive welding points, if no soldering task of the welding point is obtained within a set time, the soldering station system is controlled to enter a standby state or a shutdown state to stop the heating of the soldering iron group unit.

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