A welding control device and control method

Abstract

The application discloses a welding control device and a control method, which comprise a main cylinder, a containing cavity arranged in the main cylinder, the main cylinder comprising a first cylinder body, a second cylinder body and an end cover, the first cylinder body being capable of moving left and right, a sliding rod being slidably connected to the inner wall of the first cylinder body, the sliding rod comprising a sliding block, the sliding block dividing the containing cavity in the main cylinder into a first cavity and a second cavity, the first cylinder body being provided with a first channel and a second channel, the first channel being communicated with the first cavity, the second channel being communicated with the second cavity, and the first channel and the second channel being connected with a third valve body through an air pipe; the first cylinder body is fixedly installed with the second cylinder body, the right end of the sliding rod extends out of the right end of the second cylinder body, and the right end of the sliding rod is fixedly installed with an electrode. The application provides a welding control device and a control method, and improves the welding quality and the service life of the electrode.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of welding equipment, more particularly, to a welding control device and a control method. BACKGROUND

[0002] At present, the electrode of electric welding will be worn out during continuous use, and the main reason of wear is the contact wear between the electrode and the workpiece. After wear, when the electrode reaches the original welding position, it will have a distance difference with the workpiece to be welded, which is easy to cause the phenomenon that the electrode cannot contact the workpiece to be welded, so it is necessary to check the wear of the electrode in time to avoid affecting the product quality. However, this checking method cannot guarantee the welding quality in real time, and there are deficiencies. SUMMARY

[0003] The purpose of the present application is to overcome the deficiencies of the prior art, and to provide a welding control device and a control method to improve the welding quality and the service life of the electrode.

[0004] In order to achieve the above purpose, the present application adopts the following technical scheme: a welding control device, comprising a main cylinder, a containing cavity is arranged in the main cylinder, the main cylinder comprises a first cylinder body, a second cylinder body and an end cover, the first cylinder body can move left and right, a sliding rod is slidably connected to the inner wall of the first cylinder body, the sliding rod comprises a sliding block, the sliding block divides the containing cavity in the main cylinder into a first cavity and a second cavity, the first cylinder body is provided with a first channel and a second channel, the first channel is in communication with the first cavity, the second channel is in communication with the second cavity, and the first channel and the second channel are connected with a third valve body through an air pipe; the first cylinder body is fixedly installed with the second cylinder body, the right end of the sliding rod extends out of the right end of the second cylinder body, and the right end of the sliding rod is fixedly installed with an electrode; the first cylinder body is installed with the end cover, the end cover is installed with a first valve body, the first valve body is a one-way valve, and the fluid inflow end of the first valve body is in communication with the first cavity; an elastic component is installed on the inner wall of the second cylinder body, the elastic component is located on the right side of the sliding block, when the sliding block is located at the limit position on the right side in the main cylinder, the right end surface of the sliding block abuts against the left end surface of the elastic component, the second channel keeps in communication with the second cavity, the first channel is disconnected with the second channel, the second channel is in communication with the outside atmosphere, the air pressure in the first cavity is greater than that in the second cavity, and the air pressure in the first cavity reaches the critical opening pressure of the first valve body.

[0005] The present application is further provided that the sliding block is gap-fitted with the inner peripheral wall of the first cylinder body.

[0006] The present application is further provided that the elastic component is a sponge pad.

[0007] The present application is further provided that the end cover is provided with a first hole, the first hole is in communication with the first cavity, and the first hole is connected with an air inlet device.

[0008] The application is further provided with that when the slider is at the right limit position in the main cylinder, the slider compresses the elastic component with the second cylinder body, and the compression direction of the elastic component is along the moving direction of the slider.

[0009] The application is further provided with that when the slider moves left from the right limit position in the main cylinder, the first valve body discharges the gas in the first cavity to the outside when the gas pressure in the first cavity is greater than the first valve body starting pressure.

[0010] The application is further provided with that when the slider moves left from the right limit position in the main cylinder, the first channel and the second channel are communicated through the third valve body to balance the gas pressure of the first cavity and the second cavity.

[0011] The application is further provided with that after the slider moves left from the right limit position in the main cylinder, the first channel and the second channel are disconnected through the third valve body.

[0012] The application adopts the following technical scheme: a control method of a welding control device, an electrode is used to weld a welding part one, and the method comprises the following steps:

[0013] ①The first cavity is filled with air, the second channel is communicated with the outside air through the third valve body, the slider moves right to the limit position in the main cylinder due to the pressure difference between the left and right sides of the slider, and the slider abuts against and compresses the elastic component;

[0014] ②The first cavity stops filling with air, the main cylinder moves right, the electrode approaches the welding part one, the first channel is communicated with the second channel, and the first cavity and the second cavity are balanced in pressure;

[0015] ③The main cylinder continues to move right, the electrode abuts against the welding part one, and the welding part one generates an acting force on the electrode to make the slider slide left;

[0016] ④The slider continues to slide left, the first channel and the second channel are disconnected through the third valve body, and the gas pressure in the first cavity increases as the slider continues to slide left, thereby slowing down the slider;

[0017] ⑤The main cylinder stops moving, the slider stops moving, and the welding part one and the electrode are kept abutting under the action of the gas pressure of the first cavity.

[0018] In summary, the application has the following beneficial effects:

[0019] 1.The electrode is controlled to move, so that the same acting force is maintained when the electrode abuts against the welding part one each time, the welding quality is improved, and the phenomenon that the electrode and the welding part one cannot contact due to electrode wear is avoided, thereby reducing welding waste and improving the yield.

[0020] 2. When the slider starts to move, it needs to overcome static friction. The elastic force of the elastic component provides the force for the slider to start moving, which reduces the force between the welding component and the electrode, reduces electrode wear, and improves the service life of the electrode. Attached Figure Description

[0021] Figure 1 Cross-sectional view of the embodiment Figure 1 ;

[0022] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0023] Figure 3 for Figure 2 Cross-sectional view along the NN direction;

[0024] Figure 4 Cross-sectional view of the embodiment Figure 2 .

[0025] Reference numerals: First cylinder 1, First cavity 11, Second cavity 12, First channel 13, Second channel 14, Extension channel 141, First sensor 15, Second sensor 16, Second cylinder 2, Elastic component 21, End cap 3, First hole 31, Second hole 32, Drive component 4, First valve body 41, Flow stabilizer 42, Second valve body 43, Third valve body 5, Slide rod 6, Slider 61, Extension block 62, Groove 621, Pad layer 622, Collar 7, Fastener 71, Bottom sleeve 711, Electrode 8, End 81, Welding component one 9, Welding component two 91. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figures 1-4 As shown, this embodiment discloses a welding control device, including a main cylinder with a cavity inside. The main cylinder includes a first cylinder body 1, a second cylinder body 2, and an end cap 3. The first cylinder body 1 is a cylindrical structure with both ends extending through it axially. The end cap 3 is fixedly installed on the left end of the first cylinder body 1, closing the left opening of the first cylinder body 1. The second cylinder body 2 is fixedly installed on the right end of the first cylinder body 1, closing the right opening of the first cylinder body 1. The second cylinder body 2 is a cylindrical structure with an open left end and a closed right end. The left opening of the second cylinder body 2 is connected to the right opening of the first cylinder body 1.

[0028] likeFigure 1 As shown, the first cylinder 1 and the second cylinder 2 are coaxial, and the inner diameter of the second cylinder 2 is larger than the inner diameter of the first cylinder 1. An elastic component 21 is installed on the inner wall of the second cylinder 2. The elastic component 21 is annular and is a sponge pad with a large number of small holes inside. The elastic component 21 is coaxially arranged with the second cylinder 2.

[0029] The first cylinder 1 can move left and right. Specifically, a drive component 4 is installed on the left end of the end cover 3. The drive component 4 is an electric cylinder, and the output end of the drive component 4 is fixed to the left end of the end cover 3.

[0030] A sliding rod 6 is slidably connected to the inner wall of the first cylinder 1. The sliding rod 6 passes through the second cylinder 2 and the elastic component 21. The second cylinder 2 and the sliding rod 6 are in clearance fit. The right end of the sliding rod 6 extends out of the right end of the second cylinder 2. The sliding rod 6 includes a slider 61, and the outer peripheral wall of the slider 61 is in clearance fit with the inner peripheral wall of the first cylinder 1.

[0031] The slider 61 divides the cavity inside the main cylinder into a first cavity 11 and a second cavity 12, which are located on the left and right sides of the slider 61. The size of the areas of the first cavity 11 and the second cavity 12 changes as the slider 61 moves left and right. The first cavity 11 is formed by the first cylinder 1, the slider 61, and the end cap 3, while the second cavity 12 is formed by the slider 61, the first cylinder 1, and the second cylinder 2.

[0032] The first cylinder 1 is provided with a first channel 13 and a second channel 14, which both extend through the top of the first cylinder 1. The first channel 13 is connected to the first cavity 11, and the second channel 14 is connected to the second cavity 12. The second channel 14 includes an extension channel 141, which is horizontally oriented and extends through the right end face of the first cylinder 1 to the right side, connecting to the second cavity 12. The first channel 13 and the second channel 14 are connected by a third valve body 5 via a gas pipe. The third valve body 5 is a solenoid valve. By controlling the third valve body 5, the first channel 13 and the second channel 14 can be disconnected or connected, or the second channel 14 can be directly connected to the outside, thereby discharging the gas in the second cavity 12 to the outside atmosphere through the second channel 14.

[0033] like Figure 1 As shown, the end cap 3 is provided with a first channel 31, which is connected to the first cavity 11. The first channel 31 is connected to a second valve body 43 and a flow stabilizer 42 in sequence through an air pipe. The second valve body 43 is connected to an air intake device. The second valve body 43 controls the gas to enter the first cavity 11, and the flow stabilizer 42 controls the gas pressure of the gas entering the first cavity 11.

[0034] The end cover 3 is further provided with a second channel 32, and a first valve body 41 is installed in the second channel 32. The first valve body 41 is a one-way valve, and a fluid flow inlet of the first valve body 41 is communicated with the first cavity 11. When the air pressure in the first cavity 11 is higher than the opening pressure of the first valve body 41, the gas in the first cavity 11 is discharged to the outside through the first valve body 41.

[0035] As shown in Figure 1 , the sliding rod 6 is fixedly installed with an electrode 8 at the right end. Specifically, the sliding rod 6 includes an extension block 62 at the right end, as shown in Figure 3 , the upper end of the extension block 62 is provided with a groove 621, and the groove 621 is installed with a pad 622, which is an insulating pad. As shown in Figure 2 , the sliding rod 6 is installed with a sleeve ring 7, the sleeve ring 7 is installed with a fastener 71, the bottom of the fastener 71 is installed with a bottom sleeve 711, and the bottom sleeve 711 is an insulating sleeve. The electrode 8 is placed on the upper end of the pad 622, the left end of the electrode 8 abuts against the pad 622, and the upper end of the electrode 8 is pressed tightly by the fastener 71. As shown in Figure 1 , Figure 2 , the electrode 8 is arranged in pairs, and after the welding component one 9 abuts against the welding component two 91, it is placed between the left and right electrodes 8, and the welding points are welded by the electrodes 8. The left and right electrodes 8 are respectively controlled by the respective welding control devices.

[0036] As shown in Figure 4 , the elastic component 21 is located to the right of the sliding block 61. When the sliding block 61 is located at the limit position on the right side of the main cylinder, the right end surface of the sliding block 61 abuts against the left end surface of the elastic component 21, the second channel 14 is communicated with the second cavity 12, the first channel 13 is disconnected with the second channel 14, and the second channel 14 is communicated with the atmosphere. The air pressure in the first cavity 11 is greater than that in the second cavity 12, and the air pressure in the first cavity 11 reaches the critical opening pressure of the first valve body 41. The sliding block 61 moves to the right through the pressure difference between the first cavity 11 and the second cavity 12.

[0037] When the sliding block 61 is located at the limit position on the right side of the main cylinder, the sliding block 61 compresses the elastic component 21 together with the second cylinder body 2, and the compression direction of the elastic component 21 is along the moving direction of the sliding block 61. When the sliding block 61 is located at the limit position on the right side of the main cylinder, the first cylinder body 1 moves to the right, the electrode 8 includes an end portion 81, after the end portion 81 abuts against the welding component one 9, the first cylinder body 1 continues to approach the welding component one 9, at this time, the sliding block 61 slides to the left along the inner wall of the first cylinder body 1. Since the sliding block 61 needs to overcome the static friction force when starting to move, the elastic force of the elastic component 21 provides a force for the sliding block 61 to start to move, reduces the force between the welding component one 9 and the end portion 81, and reduces the abrasion of the end portion 81.

[0038] When the slider 61 moves left from the right limit position of the main cylinder, the first valve body 41 will discharge the gas in the first cavity 11 to the outside to prevent the pressure in the first cavity 11 from increasing after compression, thereby reducing the friction between the welding component 9 and the end portion 81.

[0039] When the slider 61 moves left from the right limit position of the main cylinder, the first channel 13 and the second channel 14 are connected through the third valve body 5. Since the elastic component 21 is a sponge, the gas in the first cavity 11 can enter the elastic component 21 and form pressure on the right end surface of the slider 61, and the first cavity 11 and the second cavity 12 are in pressure balance, thereby reducing the pressure difference between the left and right sides of the slider 61. The friction between the welding component 9 and the end portion 81 only needs to provide sliding friction resistance to the slide rod 6 to realize the movement of the slide rod 6, further reducing the friction between the welding component 9 and the end portion 81, thereby reducing the wear of the end portion 81 and prolonging the service life.

[0040] After the slider 61 moves left from the right limit position of the main cylinder, the first channel 13 and the second channel 14 are disconnected through the third valve body 5. As the slider 61 continues to move left, a pressure difference is generated between the first cavity 11 and the second cavity 12, thereby slowing down the movement speed of the slider 61. When the first cylinder 1 stops moving, the slider 61 also immediately stops moving, and the gas pressure in the first cavity 11 is maintained at the opening threshold value of the first valve body 41. By replacing the first valve body 41 and adjusting its opening threshold pressure, the gas pressure in the first cavity 11 can be adjusted to control the friction between the welding component 9 and the end portion 81, thereby reducing the wear of the two.

[0041] The first cylinder 1 is provided with a first sensor 15 and a second sensor 16 at the bottom to sense the position of the slider 61. The first sensor 15 is located to the left of the second sensor 16. During the process of the slider 61 moving to the right limit position of the main cylinder, the second sensor 16 senses the slider 61. As the slider 61 continues to move, the slider 61 moves away from the sensing position of the second sensor 16. After the slider 61 moves left from the right limit position of the main cylinder, the slider 61 immediately enters the sensing position of the second sensor 16.

[0042] A control method for controlling the above welding control device, the specific steps are as follows:

[0043] ①The first cavity 11 is filled with gas, the second channel 14 is connected to the outside atmosphere through the third valve body 5, a pressure difference is formed between the left and right sides of the slider 61, the slider 61 moves to the right limit position in the main cylinder, the slider 61 abuts and compresses the elastic component 21, and the second sensor 16 senses the slider 61. At this time, the gas pressure in the first cavity 11 is the critical pressure value for opening the first valve body 41.

[0044] 2. Close the second valve body 43, stop the air inflow in the first cavity 11, the main cylinder moves to the right, the end 81 of the electrode 8 approaches the welding component 9, and the welding component 9 is fixed by the fixing device. The first channel 13 and the second channel 14 are connected through the third valve body 5.

[0045] 3. The main cylinder continues to move to the right, the welding component 9 abuts against the end 81, and the welding component 9 generates a force on the end 81, which makes the slider 61 slide to the left. Since the first channel 13 and the second channel 14 are connected through the third valve body 5, the first cavity 11 and the second cavity 12 are in air pressure balance, thereby reducing the pressure difference between the left and right sides of the slider 61, reducing the force between the welding component 9 and the end 81, and thereby reducing the wear of the end 81 and prolonging the service life.

[0046] 4. The slider 61 slides to the left to leave the sensing position of the second inductor 16 and reaches the sensing position of the first inductor 15. The first channel 13 and the second channel 14 are disconnected through the third valve body 5. As the slider 61 continues to slide to the left, the air pressure in the first cavity 11 increases, thereby slowing down the movement of the slider 61.

[0047] 5. The main cylinder stops moving, and the slider 61 stops moving. The slider 61 is under the air pressure of the first cavity 11 to ensure that the force between the welding component 9 and the end 81 is consistent during each welding, thereby improving the welding quality.

[0048] The above only describes the preferred embodiments of the present application, and the protection scope of the present application is not limited to the above-mentioned embodiments. Any technical solutions falling within the concept of the present application shall fall within the protection scope of the present application. It should be noted that for ordinary technical personnel in the technical field, some improvements and decorations without departing from the principles of the present application shall also be considered as the protection scope of the present application.

Claims

1. A welding control device characterized by comprising: The utility model provides a kind of air pressure control device, including main cylinder, the cavity is equipped in the main cylinder, the main cylinder includes first cylinder (1), second cylinder (2), end cover (3), the first cylinder (1) can move left and right, the inner wall of the first cylinder (1) is slidably connected with slide rod (6), the slide rod (6) includes sliding block (61), the sliding block (61) divides the cavity in the main cylinder and forms first cavity (11), second cavity (12), the first cylinder (1) is equipped with first passage (13), second passage (14), the first passage (13) is communicated with the first cavity (11), the second passage (14) is communicated with the second cavity (12), the first passage (13) and second passage (14) are connected with third valve body (5) by trachea; The first cylinder (1) is fixedly installed with the second cylinder (2), the right end of the slide rod (6) protrudes from the right end of the second cylinder (2), and the electrode (8) is fixedly installed at the right end of the slide rod (6); The first cylinder (1) is installed with the end cover (3), the end cover (3) is installed with the first valve body (41), the first valve body (41) is a one-way valve, and the fluid inflow end of the first valve body (41) is communicated with the first cavity (11); The inner wall of the second cylinder (2) is installed with an elastic component (21), the elastic component (21) is located on the right side of the sliding block (61), when the sliding block (61) is located at the right limit position in the main cylinder, the right end surface of the sliding block (61) abuts against the left end surface of the elastic component (21), the second passage (14) is communicated with the second cavity (12), the first passage (13) is disconnected with the second passage (14), and the second passage (14) is communicated with the outside atmosphere, the air pressure in the first cavity (11) is greater than the air pressure in the second cavity (12), and the air pressure in the first cavity (11) reaches the critical opening pressure of the first valve body (41).

2. A welding control device according to claim 1, wherein The outer peripheral wall of the sliding block (61) is gap-fitted with the inner peripheral wall of the first cylinder (1).

3. A welding control device according to claim 1, wherein The elastic component (21) is a sponge pad.

4. The welding control device of claim 1, wherein, The end cover (3) is provided with a first hole (31), the first hole (31) is communicated with the first cavity (11), and the first hole (31) is circumscribed with an air inlet device.

5. The welding control device of claim 1, wherein, When the sliding block (61) is located at the right limit position in the main cylinder, the sliding block (61) and the second cylinder (2) compress the elastic component (21), and the compression direction of the elastic component (21) is along the moving direction of the sliding block (61).

6. A welding control device according to claim 1, wherein When the sliding block (61) moves left from the right limit position in the main cylinder, when the air pressure in the first cavity (11) is greater than the starting pressure of the first valve body (41), the first valve body (41) discharges the gas in the first cavity (11) to the outside.

7. The welding control device of claim 1, wherein, When the sliding block (61) moves left from the right limit position in the main cylinder, the first passage (13) and the second passage (14) are communicated through the third valve body (5) to balance the air pressure of the first cavity (11) and the second cavity (12).

8. The welding control device of claim 1, wherein, The first channel (13) and the second channel (14) are disconnected by the third valve body (5) after the slider (61) moves left from the right limit position in the main cylinder.

9. A control method for a welding control device according to any one of claims 1 to 8, the electrode (8) being used to weld a welding part (9), characterized in that, The method comprises the following steps: ①Air is introduced into the first cavity (11), the second channel (14) is connected with the atmosphere through the third valve body (5), the slider (61) moves right to the limit position in the main cylinder due to the pressure difference between the left and right sides of the slider (61), and the slider (61) abuts against and compresses the elastic component (21); ②Air introduction into the first cavity (11) is stopped, the main cylinder moves right, the electrode (8) approaches the welding component (9), the first channel (13) is connected with the second channel (14), and the first cavity (11) and the second cavity (12) are balanced in pressure; ③The main cylinder continues to move right, the electrode (8) abuts against the welding component (9), the welding component (9) generates an acting force on the electrode (8), and the slider (61) slides left; ④The slider (61) continues to slide left, the first channel (13) and the second channel (14) are disconnected by the third valve body (5), the pressure in the first cavity (11) increases as the slider (61) continues to slide left, and thus the movement of the slider (61) is slowed down; ⑤The main cylinder stops moving, the slider (61) stops moving, and the welding component (9) and the electrode (8) abut against each other under the action of the pressure in the first cavity (11).

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