TW200932416A - Stitch pulse welding apparatus - Google Patents

Abstract

The invention provides a stitch pulse welding device which can beforehand confirm the shape of a welding seam and can form the shape of the welding seam being wanted. The stitch pulse welding device (1) produces an electric arc under a state when a welding torch is stopped according to a preset welding condition, the electric arc is stopped after welding time, the welding torch moves repeatedly in the welding direction and begins to be ignited until moving away from the electric arc with a prescriptive moving distance, then the electric arc is produced again, a welding mark, namely squamous epithelium formed in one production of the electric arc is coincided, and the welding seam is formed on a workpiece. The stitch pulse welding device is provided with a welding condition database part (21) which in advance stores the data of corresponding relation between the welding condition (Tc) and a squamous epithelium diameter value (Sr), a squamous epithelium diameter calculation part (22), which takes the welding condition (Tc) as input and calculates the squamous epithelium diameter value (Sr) by the welding condition database part (21), and a display treatment part (24) which displays the shape information (Yd) of the welding seam on the display part (41) of an operation unit (TP).

Description

200932416 六❹, invention description: [Technical field to which the invention belongs] $ Ming is about - the kind of the base material that will be caused to the base material of the thin plate can be suppressed to the minimum... Simultaneously, pulse welding H μ material Pins [Prior Art] The so-called stitch pulse welding method refers to the control of the twisting during welding: the influence of the heat caused by the pinching is suppressed to a minimum; degree; ^ Connection method: for example, Japanese Patent Laid-Open No. 6_55268 The welding method for the purpose of automation of sheet metal welding. According to this article ‘=the welding method of the road, compared with the thin plate welding, ^ the appearance after the connection, and reduce the amount of distortion caused by welding. The means at 3 = 3 is to 'fire the arc in a state where the welder is stopped so that the weld is heard, after the set point has passed, the arc is stopped and the welder is moved to the vicinity of the outer edge of the melt. The arc starts again. Next, refer to the fifth figure to explain this prior art. The operator 自动 automatically enters the electric product for the finished product W. The actuator M is provided with a plurality of servo motors (not shown) in which the upper arm 53 and the lower arm 5 are driven to rotate both. Arc: Installed at the tip end of the upper arm 53 of the operator Μ. Wiring 57 丨 】 】 】 】 】 】 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴 轴Generally, the length Ew is about 15 mm. However, in order to match the groove shape and welding conditions of the welded portion, the operator can also use the teach pendant TP to lengthen the s: Ew to a desired length. Further, the inside of the guide cable 52 is provided with a ring (C〇llmer) for guiding the welding line 57. The cable 52 is connected to the arc welder T. The cable 52 is supplied to the arc welding H T from the power of the welding power source wp and from the gas compression cylinder 58. The body of the hole is used as a means of riding. The teaching suspension system TP is used for (4) to determine the action of the device, the necessary conditions for the pulse welding of the needle, the movement speed, the movement interval, and the τ ρ 3 it Γ t The system operation S is set to set the above various conditions. The machine control hard-working RC performs the welding operation of the operator M. The machine control device R C includes a main control unit, an operation control unit, a driver (not shown), and the like. The operator is based on the training sequence taught by the teaching pendant, and is operated by the bottle driver.

^, - 叙 Μ ,, motor and output motion control signal, so that the operator M is rotated. The servo motor of the operator M is provided with the position of the leading end of the arc welding device τ of the encoder. In the machine i welding section, stitch welding is performed when the welding, moving, and cold parts described below are repeated. 200932416 Next, refer to the sixth figure to illustrate the pin pulse welding.

From 煜=t ί from the apex of the electric arc welder 突出. At the end of the welding of the shielding gas G, the welding is set at a constant flow rate from the arcing == electric welding between the tip end of the welding line 57 and the finished product = arc Α. Finished product wji, weld line 57 due to melting pool Y. After the arc A paint pq L / exhibition king J bath 电弧, the arc A stops, and the welding time indicated is shown in the sixth figure _ after the arc is stopped. The cooling time of the electric power is maintained, and the condition of the welding is maintained. 4 4 When the valve is stopped, the operator and the arc welding device τ are only blown out of the shielding gas. Hyun is essentially solidified by cooling of the 蒦5 蒦 oxygen body G. (4) Figure (4) shows that the arc welder is moved to the next weld = state = after the cooling time has elapsed, the lower edge of the electric arc welder is moved in the direction of the weld. Thereby, the arc welder τ shifts :: the arc that deviates from the preset movement interval 再 reopening t) is pre-mosquito. The moving interval is the same as the moving distance of the outer peripheral edge of the weld line 57 from the beginning of the arc to the @ dent γ of the molten pool Y, and the moving distance is the same as that of the first, and (4) no arc starting point. The arc remanufactured L newly forms the molten pool Y at the end of the weld mark γ', and is welded; in this case, in the stitch pulse welding device 1, the state in which the crucible and the arc are alternately welded is alternately repeated. Cooling and moving. 1 = 疋' Let the welds overlap and form the bubbles on the finished product: Fruit 200932416 Next, see Figure 7 for welding bubbles. To illustrate the formation of the seventh figure in the post-weld construction, the riding at the last splicing Sc. Further, a weld mark Sc which is formed in the direction from the start point P1 of the moving interval from the arc arc start point P1 is formed. Even at the electric starting point P2, the same welding mark Sc is formed. Thus, the welding re-starting point P3 is also formed in the order of the welding bubble B. '艮The result of overlapping into scaly ❹ ❹ As the appearance of the scaly welded blister and the improvement of the product:::: is a lifting and receiving technique, but it is impossible to predict welding. ..., and, by the above, the shape of the welding bubble which is actually welded after the teaching. If the appearance is poor, it will repeat === the shape of the welding bubble, that is, the so-called trial error for the condition. Also ^. In order to be able to weld _ shape 1 to be a great teaching work [invention] You; hairpin is to provide a kind of needle pulse welding device, that is, = 彳 彳 | 面 面 面 面 面 面 面 面 面 面 , , , , , , , , , , , , The shape of the bubble is taken' to obtain the shape of the desired solder bubble. In order to solve the above problems, according to the present invention, the needle chat pulse welding skirt is based on the use of the operation of the first section of the account; = current, welding voltage and tandem time of the welding stop ΐ · · 订 产生 产生 产生 订 订 订 订 订 于 于 于After the arc is stopped, the welder is repeatedly moved away from the arc starting point by a predetermined movement interval along the welding inlet direction, and the known joint formed by the use of the primary arc is scaly. Thereby a soldering bubble is formed on the finished product. The needle 200932416 foot/pulse rod connection device has a welding condition database for the correspondence between the drum memory welding condition and the welding mark, and the welding condition based on the operation means '(4) The welding member database calculates the diameter The difference between the two parts and the display processing unit that contains the shape information of the welding bubble of at least the diameter is not known. [Embodiment] As shown in the first figure, the stitch pulse welding of the present embodiment: the machine control device RC and the structure of the operation means ❹ 四 (4) are not the same as those of the conventional technique shown in the fifth figure; f ^, the operator M, the welding power source WP, the gas compression cylinder 58, and the like shown in the fifth figure are omitted. In the following, it is said that the composition is this. The main part of the machine control device Rc and the teaching suspension system (4) device RC for the operation of the control of the welding action. The machine control device RC includes a main control unit 3, an operation control unit, a motion command unit 12, (4) 4, a CPU 6 as a central calculation processing unit, a main controller j, a welding control unit 13, and a servo. Drivers (not shown), ^ :冱 are connected to each other by bus bars (not shown). The motion control unit; performs trajectory calculation of HM, etc., and uses the calculation result as the drive signal command unit 12. The drive command unit 12 outputs a servo control for controlling the rotation of the sleeper motor, a memory program, various parameters, and the like. The teaching suspension system τρ, which is a means for the production of the bee, has a setting unit 42 that displays various conditions such as the display unit 4 of each of the cameras and the movement target position of the illusion device. Various conditions and the like by the setting unit 42 are input to the machine control device rc. The main control unit 3 includes a teaching processing unit 20 that memorizes the welding conditions of the 200932416 input from the setting unit 42. As the stitch pulse welding J, the welding current, the welding voltage, the relay, and the moving cold potassium time are input from the setting unit 42. The teaching processing unit 20 memorizes the loose welding conditions Tc (welding current, welding voltage, and welding time 'j), the movement interval Mp, and the cooling time Ct. ❹ ❹ The main control unit 3 is provided in advance The diameter difference 4 of the diameter of the weld mark, the movement interval calculation unit 25, the total number of the weld marks of the bubble shape generation unit 23, and the display processing unit hard disk 4 memorize the welding condition database 2 The welding conditions of the welding conditions (the welding current, the welding voltage, and the welding time at the top of the welding condition) are related to the welding mark. The condition database 21 is controlled by an experiment in advance. As shown in the second figure, the 'welding condition database 21' is a material accumulated by the method of recording the diameter of the weld mark by changing the welding current and the welding voltage in the actual welding %. The thickness of the σσ, the material and diameter of the weld line, etc., more specifically 'for example, the welding environment where the thickness of the finished product is 1 mm, •, '疋 iron, and its diameter is 〇6111111 Will weld = solid, in 0.2 seconds 'make the welding current and welding voltage change widely H has recorded the welding formed by the use of a needle pulse welding 'fixed welding time to 〇.3 seconds, again at 66 JI. When the voltage is changed, the welding marks (10)nηΑ-series are recorded and the accumulated data is pre-memorized to the hard disk 4 as the welding library 21. Of course, in ί = lmm, the welding line is iron, The diameter is a welding condition database of 〇.8mm environment and memorizes it. 3 Next, the operation of the pin pulse welding device is explained. 9 200932416 As a necessary condition for pin pulse welding, welding current, voltage, moving speed, The movement interval, the splicing time, and the cooling time = setting unit 42 of the teaching suspension system 被 are input. Thus, these conditions can be used to calculate the straight 彳 t & weld bubble shape and weld The total number of traces Bn. First, the calculation method of the straight # Sr of the weld mark will be described. The diameter calculation unit 22 is based on the welding condition of the input welding condition Tc and the welding time: The condition database 2 ❹ , the diameter of the joint Sr. The welding condition database 2 疋 shown in the second figure selects the representative welding current value and the welding voltage value = the obtained database. These values are in the main The control unit 3 (four) is expanded by ^ = ^. Therefore, for example, even the intermediate value of the welding time G.3 seconds, the welding splicing voltage value of 15 V, etc. is regarded as the welding 庐 s. 匕1 in, 'θ based on approximation The curve can also calculate the straightness r of the weld mark. The diameter Sr of the weld mark of the nose is stored in the hard disk 4. Next, the calculation method of the bubble shape will be described. ΜΡ, the part i3 is based on the diameter Sr of the weld mark and the movement interval. The predicted bubble shape when viewed on the side of the secret 15 is generated in a two-dimensional plane, and in the f-dimensional::H first 'generates a hypothetical two-dimensional plane Hr. It is the arc at the starting position. The definition is determined as the welding direction λ, . ^ rn generates the pull of Sr, and you generate the predicted bubble shape Bd. When you split Hcr, you can imagine The forecast is as follows: one or more than ten. 200932416 The plane data is memorized on the hard disk 4. In the above example, although the movement interval Mp is input from the setting unit 42, the overlap of the weld marks may be input. The rate Lr is substituted for the movement interval Mp. That is, the movement interval Mp may be calculated based on the overlap ratio Lr of the weld mark and the diameter Sr of the weld mark. Referring to the fourth figure, the movement interval may be described with respect to the overlap ratio of the input weld mark. As shown in the fourth figure, the overlap ratio Lr of the weld mark is a ratio at which the weld mark and the next weld mark overlap each other. The movement interval calculation unit 25 can calculate the movement interval Mp by the following formula: The movement interval Mp = The diameter Sr- of the weld mark (the diameter of the weld mark Sr X the overlap ratio Lr of the weld mark Lr) The calculated movement interval Mp is stored in the hard disk 4. Further, the total number of weld marks can be calculated. First, the total amount calculation unit 26 calculates the welding length. The welding start position and the welding end position are taught in advance. Therefore, the welding length between the welding start position and the end position can be easily calculated. At the same time, the total number of weld marks Bn can be calculated by the following formula: The total number of weld marks Bn = weld length / movement interval +1 The above "+ 1" means that at the end of the weld, because the calculation results in the remaining Welding can be performed at the end of welding even if the moving interval is not reached. The total number Bn of weld marks is memorized on the hard disk 4 〇 Next, the display processing unit 24 will be described. When the instruction is input from the setting unit 42, the display processing unit 24 records the diameter Sr of the weld mark stored in the shape information and the hard spot 4, the total number Bn of weld marks, the overlap ratio Lr of the weld mark, the movement interval Mp, and The pre-11 200932416 shape Bd is displayed on the display unit 41. As the shape information, it is preferable that all of the above information may be displayed as any one or plural * outside, and the indication from the setting unit 42 may be set in the welding condition for the stitch pulse. Input. As described above, since the shape history of the welding bubble can be predicted before the welding construction, a trial operation for forming a desired welding bubble is not required. That is, this is enough to reduce the man-hours required for the teaching of welding.

Further, since the shape of the predicted welding bubble can be visually confirmed and added to the above effect, the shape of the welding bubble can be easily recognized. By "representing the overlap ratio of the weld marks instead of the movement interval, it is possible to imagine the ideal weld bubble appearance and to add it to the above effect", and the man-hour required for the teaching of welding can be reduced. Further, since the total number of weld marks forming the welding bubbles can be calculated and added to the above effects, the appearance of the welding bubbles after the welding can be easily imagined. In addition, since any one or a plurality of or all of the diameter, the total number, the overlap ratio, the movement interval, and the predicted bubble shape can be displayed as the shape information of the welding bubble, it can be more easily imagined. The appearance of the welding bubble after welding. BRIEF DESCRIPTION OF THE DRAWINGS The first figure is a block diagram of a stitch pulse welding apparatus according to an embodiment of the present invention; the second figure is a diagram showing a database of welding conditions; and FIG. 3 is a diagram for explaining a state in which a predicted bubble shape is generated. The fourth diagram is a schematic diagram for explaining the overlap ratio of the weld marks; the fifth diagram is a schematic diagram showing the conventional stitch pulse welding device; and the sixth diagram is a schematic diagram for explaining the pulse welding of the stitches; 12 200932416 The seventh figure is a schematic diagram for explaining the welding bubbles formed after the welding construction. [Main component symbol description] I Pin pulse welding device 3 Main control unit 4 Hard disk

5 RAM

6 CPU II Motion Control

12 drive command unit 13 welding control unit 20 teaching processing unit 21 welding condition database 22 diameter calculation unit 23 bubble shape generation unit 24 display processing unit 25 movement interval calculation unit 26 total calculation unit 41 display unit 42 setting unit 52 cable 53 upper arm 54 Lower arm 55 Wrist 56 Winding shaft 57 Welding line

A 58 gas compression cylinder arc 13 200932416 b welding bubble Bd prediction bubble shape Bn total number of weld marks Cr circle

Ct Cooling time DB welding conditions Dr Welding direction Ew length G shielding gas ® Hr two-dimensional plane

Lr weld mark overlap rate Μ operator Μρ movement interval Ρ1 arc start point Ρ2 arc restart point Ρ3 arc restart point Ρ1~Ρη division point RC machine control unit ® Sc weld mark

Sp moving speed Sr welding mark diameter T arc welding machine Tc welding condition TP teaching suspension system W finished product WP welding power source Y melting pool Y' welding mark

Claims (1)

200932416 VII. The scope of application for patents: 1. A stitch pulse welding dream. 3. ^ ^ Set the splicing current, the welding includes the welding condition of the state of the welder stopped by the operation means, and the electric singer is stopped afterwards. Then, repeating the welding time is repeated from the arc start point in the row direction only by the === the welder moves along the welding re-starting point and re-generates the electric power to move the welding mark to the arc to form an overlap of 3 welds. The secondary arc is characterized in that the aforementioned stitch pulse H is mounted to form a welding bubble, and the welding condition database and the corresponding relationship of the diameters of the box joints are described as the splicing conditions and the shape of the welding. The stitching_welding device of the present invention, wherein the stitching pulse welding device further includes: generating the aforementioned bubble shape including the aforementioned blister foam from the predicted bubble shape of the welding bubble in the two-dimensional plane from the diameter of the H and the moving interval The axis stack ratio is ΓΓ.重' The relocation interval calculation unit that sets the weld mark in place of the movement interval, and when the overlap ratio is set, 15 200932416 automatically calculates the movement interval based on the weight ratio and the diameter. 4. The stitch pulse welding device of claim i or 2, characterized in that: the stitch pulse welding device further includes: ^ a total number calculating unit that calculates the welding bubble based on the diameter and the movement interval The total number of the weld marks is the same as that of the above-mentioned operation means. π 贝 〇 〇 外 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 申请 ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; ; Before and how