A welding device

Abstract

The utility model embodiment provides a kind of welding device, it is related to pipe fitting welding equipment technical field.Welding device includes frame body, clamping assembly, welding assembly, driving part and control circuit.Clamping assembly is installed to frame body and can rotate around first axis relative to frame body, clamping assembly is used to fix the piece to be welded, driving part is installed to frame body and is connected with clamping assembly, driving part is used to drive clamping assembly to rotate around first axis.Welding assembly is installed to frame body, and welding assembly is used to weld the piece to be welded on clamping assembly, control circuit is used to control driving part to drive clamping assembly to rotate first angle and then reverse second angle and then stop.Control circuit can control driving part to drive clamping assembly to rotate first angle and then reverse second angle and then stop, can realize automatic welding, without manual one hand rotating turntable, one hand holds welding torch and welds, liberates manual labor, can also improve welding efficiency, guarantee the stability of the welding quality of flange pipe fitting whole.

Description

Technical Field

[0001] This utility model relates to the field of pipe welding equipment technology, and more specifically, to a welding device. Background Technology

[0002] Flange welding is mainly used to improve the strength, stability and sealing of connection points, especially in applications involving high pressure, high temperature, corrosive media and those requiring high reliability.

[0003] When welding flanges, the relevant technology requires manual operation, with one hand rotating the turntable and the other holding the welding gun. This results in high labor intensity, low efficiency, and inconsistent welding quality. Utility Model Content

[0004] The purpose of this invention is to provide a welding device that can reduce manual labor in welding, improve welding efficiency, and ensure the stability of welding quality.

[0005] The embodiments of this utility model can be implemented as follows:

[0006] In a first aspect, this utility model provides a welding apparatus, comprising:

[0007] Frame;

[0008] A clamping assembly is mounted on the frame and can rotate relative to the frame about a first axis. The clamping assembly is used to fix the workpiece to be welded.

[0009] A driving component, which is mounted on the frame and connected to the clamping assembly, is used to drive the clamping assembly to rotate about a first axis.

[0010] Welding assembly, the welding assembly is installed on the frame, the welding assembly is used to weld the workpiece to be welded on the clamping assembly;

[0011] The control circuit is used to control the drive component to rotate the clamping assembly forward by a first angle, then reverse by a second angle, and then stop the machine.

[0012] In an optional embodiment, the clamping assembly is provided with a sensing element, and the control circuit includes a sensing switch disposed on the frame. The sensing switch is used to detect the sensing element. The control circuit includes a first circuit unit and a second circuit unit electrically connected. The first circuit unit is used to control the drive unit to drive the clamping assembly to rotate forward by a first angle before the sensing switch detects the sensing element for the second time. The second circuit unit is used to control the drive unit to drive the clamping assembly to rotate backward by a second angle and then stop the machine when the sensing switch detects the sensing element for the second time.

[0013] In an optional embodiment, the control circuit further includes a power supply. The first circuit unit includes a first line and a second line. A sensor switch, a first control switch and a first start contactor are sequentially arranged on the first line. The two ends of the first line are connected to the power supply and ground, respectively. After the first start contactor is energized, it is used to send a rotation signal in the forward direction to the driving component. When the sensor switch detects the sensed component, the sensor switch is disconnected.

[0014] The second circuit includes a first end and a second end that are opposite to and electrically connected to the first circuit. The first end is located between the power supply and the inductive switch, and the second end is located between the first control switch and the first starting contactor. The second circuit is provided with a normally open auxiliary contact, which closes when current passes through the first starting contactor.

[0015] In an optional implementation, the first circuit unit further includes a third line and a first branch;

[0016] The second circuit is also equipped with a normally closed switch, and the normally closed switch is closer to the power supply than the normally open auxiliary contact.

[0017] The third circuit has a first connection point and a second connection point. The first connection point is electrically connected to the first circuit and is located between the inductive switch and the first control switch. The second connection point is electrically connected to the second circuit and is located between the normally closed switch and the normally open auxiliary contact.

[0018] The two ends of the first branch are connected to the second line and ground respectively. The first branch is located on the side of the normally open auxiliary contact away from the normally closed switch. A energizing delay relay is installed on the first branch, and the energizing delay relay is linked with the normally closed switch.

[0019] When the inductive switch detects the sensed object for the first time, the inductive switch opens, and the normally closed switch opens after a first preset time. After the first preset time, the sensed object passes the inductive switch.

[0020] In an optional implementation, the second circuit unit includes a fourth line and a second branch;

[0021] The fourth circuit is equipped with a second control switch, a normally closed auxiliary contact, a normally open switch and a second starting contactor in sequence. The two ends of the fourth circuit are connected to the power supply and ground respectively. The normally closed auxiliary contact and the normally open auxiliary contact are linked. After the second starting contactor is energized, it is used to send a reverse rotation signal to the driving component.

[0022] The third line also has a third connection point, which is electrically connected to the fourth line and is located between the second control switch and the normally closed auxiliary contact.

[0023] The two ends of the second branch are connected to the second line and ground respectively. The second branch is located on the side of the normally open auxiliary contact away from the normally closed switch. A power-off delay relay is installed on the second branch, and the power-off delay relay is linked with the normally open switch.

[0024] If the inductive switch detects the sensed object for the second time, the inductive switch will open, the normally closed switch will close, the normally open switch will close after a second preset time, and the normally open switch will open after a third preset time.

[0025] In an optional embodiment, the control circuit further includes an emergency stop switch, which is disposed on the first line, with the first end located between the emergency stop switch and the inductive switch.

[0026] And / or the inductive switch is a magnetic inductive switch, and the sensed element is a magnetic element.

[0027] In an optional implementation, the control circuit is communicatively connected to the welding assembly, which can be started when the clamping assembly starts rotating forward.

[0028] In an optional embodiment, the clamping assembly is mounted on the frame via a drive member that can swing relative to the frame about a second axis, with the first axis and the second axis forming an angle.

[0029] In an optional embodiment, the welding assembly includes a welding frame and a welding torch mounted on the welding frame, the welding torch being movable on the welding frame in a horizontal and / or vertical direction.

[0030] In an optional embodiment, the welding frame includes a connecting seat, a first rod, a second rod, and a third rod. The connecting seat is mounted on the frame body. The first rod is connected to the connecting seat and extends along a first direction. The second rod is movably connected to the first rod and extends along a second direction. The third rod is connected to the second rod and can move relative to the second rod in the second direction and / or the vertical direction. The third rod extends along the vertical direction. The welding torch is movably connected to the third rod. The first direction and the second direction form an angle. The vertical direction is perpendicular to the first direction and the second direction. The first direction is parallel to the first axis.

[0031] And / or the welding torch can rotate relative to the welding frame about a third axis, which is parallel to the first axis.

[0032] The beneficial effects provided by this utility model embodiment include: The welding device provided by this utility model embodiment includes a frame, a clamping assembly, a welding assembly, a driving component, and a control circuit. The clamping assembly is installed on the frame and can rotate relative to the frame around a first axis. The clamping assembly is used to fix the workpiece to be welded. The driving component is installed on the frame and connected to the clamping assembly, and is used to drive the clamping assembly to rotate around the first axis. The welding assembly is installed on the frame and is used to weld the workpiece to be welded on the clamping assembly. The control circuit is used to control the driving component to drive the clamping assembly to rotate forward by a first angle, then reverse by a second angle, and then stop. The control circuit can control the driving component to drive the clamping assembly to rotate forward by a first angle, then reverse by a second angle, and then stop, enabling automatic welding. This eliminates the need for manual labor, requiring one hand to rotate the turntable and the other to hold the welding torch, thus freeing up manual labor, improving welding efficiency, and ensuring the overall welding quality of the flange fittings is stable. Attached Figure Description

[0033] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this utility model and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0034] Figure 1 This is a schematic diagram of the welding apparatus provided in this embodiment from a first-view perspective;

[0035] Figure 2 This is a schematic diagram of the control circuit provided in this embodiment;

[0036] Figure 3 This is a schematic diagram of the welding apparatus provided in this embodiment from a second perspective;

[0037] Figure 4 for Figure 3 A magnified view of a portion of the image.

[0038] Icons: 1-Welding device; 100-Frame; 200-Clamping assembly; 210-Sensed component; 300-Driver; 400-Welding assembly; 410-Welding frame; 411-First rod; 4111-First connecting hole; 412-Second rod; 4121-First connecting tooth; 413-Third rod; 4131-Second connecting tooth; 414-Connecting seat; 415-Connector; 416-Welding torch; 420-Adjusting assembly; 421-First fastening component; 4211-First fastening part; 4212-Second fastening part; 4213-First fastener; 422-Second fastening component; 4221-Third fastening part; 4222-Fourth fastening part; 4223-Second fastener; 423-First adjusting component; 4231-First mating gear; 424-Second adjusting component; 4241-Second mating gear; 500 - Control box; 510- Interlocking switch; 520- Forward / Reverse switch; 530- Speed ​​adjustment switch; 600- Control circuit; 610- First circuit; 611- Inductive switch; 612- First control switch; 613- First starting contactor; 614- Emergency stop switch; 620- Second circuit; 621- First terminal; 622- Second terminal; 623- Normally open auxiliary contact; 624- Normally closed switch; 630- Third circuit; 631- First connection point; 632- Second connection point; 633- Third connection point; 640- Fourth circuit; 641- Second control switch; 642- Normally closed auxiliary contact; 643- Normally open switch; 644- Second starting contactor; 650- First branch; 651- Power-on delay relay; 660- Second branch; 661- Power-off delay relay; 670- Power supply; 2- Parts to be welded. Detailed Implementation

[0039] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0040] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0041] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0042] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," or "outer" are used to indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship in which the utility model product is usually placed during use, they are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0043] Furthermore, the terms "first" and "second" are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0044] It should be noted that, where there is no conflict, the features in the embodiments of this utility model can be combined with each other.

[0045] The following describes in detail, with reference to the accompanying drawings, the specific structure of a welding device 1 provided by this utility model and its corresponding technical effects.

[0046] Please refer to Figures 1-3 The welding device 1 provided in this embodiment includes a frame 100, a clamping assembly 200, a welding assembly 400, a driving component 300, and a control circuit 600. The clamping assembly 200 is mounted on the frame 100 and can rotate relative to the frame 100 about a first axis. The clamping assembly 200 is used to fix the workpiece 2 to be welded. The driving component 300 is mounted on the frame 100 and connected to the clamping assembly 200. The driving component 300 is used to drive the clamping assembly 200 to rotate about the first axis.

[0047] The welding assembly 400 is installed on the frame 100. The welding assembly 400 is used to weld the workpiece 2 to be welded on the clamping assembly 200. The control circuit 600 is used to control the drive unit 300 to drive the clamping assembly 200 to rotate forward by a first angle, then reverse by a second angle, and then stop.

[0048] It should be noted that the component to be welded 2 in this embodiment can be understood as a flange pipe fitting, which can be a flange bend. The clamping assembly 200 is used to clamp or release the flange pipe fitting.

[0049] The welding device 1 provided in this embodiment can pre-clamp the flange fittings using the clamping assembly 200, aligning the welding torch 416 of the welding assembly 400 with the gap to be welded on the flange fittings. The control circuit 600 can control the clamping assembly 200 to control the drive component 300 to rotate the clamping assembly 200. During the rotation of the clamping assembly 200, the welding assembly 400 can weld the gap to be welded on the flange fittings clamped on the clamping assembly 200. Since the control circuit 600 can control the drive component 300 to rotate the clamping assembly 200 forward by a first angle and then reverse by a second angle before stopping, automatic welding can be achieved. This eliminates the need for manual labor, such as one hand rotating the turntable and the other holding the welding torch 416, thus freeing up manual labor, improving welding efficiency, and ensuring the stability of the overall welding quality of the flange fittings.

[0050] In this embodiment, the first angle is greater than 360°.

[0051] The clamping assembly 200 is fixedly equipped with the sensing element 210, that is, the sensing element 210 can rotate with the clamping assembly 200. The control circuit 600 includes a sensing switch 611 disposed on the frame 100. The sensing switch 611 is used to detect the sensing element 210. The control circuit 600 also includes a first circuit unit and a second circuit unit electrically connected. The first circuit unit is used to control the drive unit 300 to drive the clamping assembly 200 to rotate forward before the sensing switch 611 senses the sensing element 210 for the second time. The second circuit unit is used to control the drive unit 300 to drive the clamping assembly 200 to rotate in reverse by a second angle and then stop when the sensing switch 611 senses the sensing element 210 for the second time.

[0052] In detail, with Figure 3 For reference, the inductive switch 611 is located above the clamping assembly 200, and in the initial state, the sensed element 210 is located to the right of the inductive switch 611. Optionally, clockwise rotation of the clamping assembly 200 can be understood as the clamping assembly 200 rotating in a clockwise direction, and counterclockwise rotation can be understood as the counterclockwise direction.

[0053] When the inductive switch 611 senses the sensing element 210 for the first time, the first circuit unit still sends a rotation signal to the driving component 300 to control the clamping assembly 200 to rotate clockwise, thereby controlling the clamping assembly 200 to drive the workpiece 2 to be welded to rotate clockwise. When the inductive switch 611 senses the sensing element 210 for the second time, the second circuit unit sends a rotation signal to the driving component 300 to control the clamping assembly 200 to rotate. That is, before the clamping assembly 200 rotates counterclockwise, the rotation stroke of the clamping assembly 200 is the arc length of the sensing element 210 and the inductive switch 611 in the clockwise direction at the beginning and end of the rotation, plus one complete revolution. In other words, the flange fitting can complete more than one revolution of welding during the welding process, ensuring that the starting and ending positions of the flange fitting welding have a certain length of overlap, and ensuring that the weld at the starting and ending arcs is fully formed.

[0054] In this embodiment, when the inductive switch 611 senses the sensed component 210 for the second time, the second circuit unit can send a rotation signal to the drive component 300 in reverse direction for a first preset time. At this time, the clamping assembly 200 stops rotating after rotating in the opposite direction for a first preset time. After rotating in the opposite direction for a second angle, the clamping assembly 200 can be reset to a certain extent. The entire welding cycle is completed, realizing automatic welding. There is no need for manual labor to rotate the turntable with one hand and hold the welding gun 416 with the other hand, which liberates manual labor, improves welding efficiency, and ensures the stability of the overall welding quality of the flange fitting.

[0055] The second angle of reversal can be understood as the rotation angle from the start of the reverse rotation of the clamping assembly 200 driven by the driving component 300 to the point when the clamping assembly 200 stops rotating.

[0056] It should be noted that in this embodiment, the detection of the sensed component 210 by the induction switch 611 can be understood as the sensed component 210 passing under the induction switch 611 during the rotation of the clamping assembly 200. In this embodiment, the induction switch 611 and the clamping assembly 200 are spaced apart.

[0057] After rotating clockwise for more than one full turn and then counterclockwise for a second angle, the clamping assembly 200 can be reset.

[0058] The clamping assembly 200 includes a chuck and multiple jaws disposed on the chuck. The multiple jaws can move closer to each other or further apart to clamp or release the workpiece 2 to be welded. It should be noted that the clamping assembly 200 is a conventional structure of the flange pipe fitting welding device 1. Therefore, there are no restrictions on the clamping structure of the clamping assembly 200, as long as it can clamp the flange pipe fitting.

[0059] In detail, in this embodiment, the control circuit 600 further includes a power supply 670. The first circuit unit includes a first line 610 and a second line 620. A sensor switch 611, a first control switch 612, and a first start contactor 613 are sequentially arranged on the first line 610. The two ends of the first line 610 are connected to the power supply 670 and ground, respectively. After the first start contactor 613 is energized, it sends a forward rotation signal to the driving component 300. When the sensor switch 611 detects the sensed component 210, the sensor switch 611 opens. It can be understood that when the sensor switch 611 does not detect the sensed component 210, the sensor switch 611 closes.

[0060] The second line 620 includes a first end 621 and a second end 622 that are opposite to and electrically connected to the first line 610. The first end 621 is located between the power supply 670 and the inductive switch 611, and the second end 622 is located between the first control switch 612 and the first start contactor 613. The second line 620 is provided with a normally open auxiliary contact 623, which closes when current passes through the first start contactor 613.

[0061] It should be noted that the first control switch 612 in this embodiment can be understood as a start switch. The first control switch 612 can be set on the frame 100 so that the user can control the drive component 300 to drive the clamping component 200 to move. In this embodiment, the first control switch 612 is a jog switch.

[0062] When the first control switch 612 is pressed, the first circuit 610 is turned on, and the current from the power supply 670 can flow to the ground through the induction switch 611, the first control switch 612 and the first starting contactor 613. After the current passes through the first starting contactor 613, the normally open auxiliary contact 623 closes. After the first control switch 612 is released, the first circuit 610 is turned off. At this time, the current can flow through the second circuit 620 and then through the first starting contactor 613 to maintain the forward rotation of the clamping assembly 200.

[0063] In other words, in this embodiment, the current from the power supply 670 can flow to the ground after passing through the inductive switch 611, the first control switch 612, and the first starting contactor 613. After the current passes through the first starting contactor 613, the normally open auxiliary contact 623 closes. When the inductive switch 611 detects the sensed object 210 for the first time, the inductive switch 611 opens. At this time, because the normally open auxiliary contact 623 is closed, the current from the power supply 670 can flow through the second line 620 and then through the first starting contactor 613 to maintain the forward rotation of the clamping assembly 200.

[0064] Optionally, the first circuit unit further includes a third line 630 and a first branch 650. The second line 620 is also provided with a normally closed switch 624, and the normally closed switch 624 is closer to the power supply 670 than the normally open auxiliary contact 623. The third line 630 has a first connection point 631 and a second connection point 632. The first connection point 631 is electrically connected to the first line 610 and is located between the induction switch 611 and the first control switch 612. The second connection point 632 is electrically connected to the second line 620 and is located between the normally closed switch 624 and the normally open auxiliary contact 623.

[0065] The two ends of the first branch 650 are connected to the second line 620 and ground respectively. The first branch 650 is located on the side of the normally open auxiliary contact 623 away from the normally closed switch 624. A power-on delay relay 651 is provided on the first branch 650. The power-on delay relay 651 is linked with the normally closed switch 624.

[0066] Optionally, the normally closed switch 624 mentioned above can be understood as the execution end of the energized time delay relay 651, that is, the normally closed switch 624 can be understood as the linkage contact of the energized time delay relay 651.

[0067] When the induction switch 611 detects the sensed object 210 for the first time, the induction switch 611 is opened, and the normally closed switch 624 is opened after a first preset time. After the first preset time, the sensed object 210 passes the induction switch 611.

[0068] Understandably, due to the linkage between the energized delay relay 651 and the normally closed switch 624 on the first branch 650, when the induction switch 611 detects the sensed object 210 for the first time, the induction switch 611 opens. Even if the current flowing out of the power supply 670 cannot pass through the induction switch 611 and enter the first connection point 631 and the second connection point 632 of the third line 630, and then flow through the normally open auxiliary contact 623 to the second end 622 of the second line 620 and to the first starting contactor 613, the current flowing out of the power supply 670 can still pass through the second line 620 and flow to the first starting contactor 613 within the first preset time. Within the second preset time after the induction switch 611 first senses the sensed object 210, the second line 620 can act as a bridge, so that the current can continue to flow through the first starting contactor 613 to maintain the forward rotation state of the clamping assembly 200.

[0069] After a first preset time, the normally closed switch 624 opens. At this time, the sensed element 210 has passed the induction switch 611, and the induction switch 611 closes. The current flowing from the power supply 670 can then pass through the induction switch 611, enter the first connection point 631 and the second connection point 632 of the third circuit 630, and then flow through the normally open auxiliary contact 623 to the second terminal 622 of the second circuit 620, to the first starting contactor 613, and finally to the ground. At this time, because the current passing through the normally open auxiliary contact 623 will continue to flow into the energizing delay relay 651 of the first branch 650, the normally closed switch 624 remains open.

[0070] In detail, the second circuit unit includes a fourth line 640 and a second branch 660. The fourth line 640 is sequentially equipped with a second control switch 641, a normally closed auxiliary contact 642, a normally open switch 643, and a second starting contactor 644. The two ends of the fourth line 640 are connected to a power supply 670 and ground, respectively. The normally closed auxiliary contact 642 is linked with the normally open auxiliary contact 623. That is, when the normally open auxiliary contact 623 is closed, the normally closed auxiliary contact 642 is open, and when the normally open auxiliary contact 623 is open, the normally closed auxiliary contact 642 is closed.

[0071] When the second starting contactor 644 is energized, it is used to send a reverse rotation signal to the drive unit 300.

[0072] The third line 630 also has a third connection point 633, which is electrically connected to the fourth line 640 and is located between the second control switch 641 and the normally closed auxiliary contact 642.

[0073] The two ends of the second branch 660 are connected to the second line 620 and ground respectively. The second branch 660 is located on the side of the normally open auxiliary contact 623 away from the normally closed switch 624. A power-off delay relay 661 is installed on the second branch 660. The power-off delay relay 661 is linked with the normally open switch 643.

[0074] Optionally, the normally open switch 643 mentioned above can be understood as the execution end of the power-off delay relay 661, that is, the normally open switch 643 can be understood as the linkage contact of the power-off delay relay 661.

[0075] Understandably, after the power-off delay relay 661 on the second branch 660 is de-energized for a second preset time, the normally open switch 643 closes. Since the normally open switch 643 is normally open, it will reopen after a third preset time.

[0076] When the inductive switch 611 detects the sensed object 210 for the second time, the inductive switch 611 opens, the normally closed switch 624 closes, and the normally open switch 643 closes after a second preset time and opens again after a third preset time.

[0077] Understandably, when the inductive switch 611 detects the sensed object 210 for the second time, the inductive switch 611 opens. Since the normally closed switch 624 remains open, the current flowing from the power supply 670 cannot pass through the first starting contactor 613 when the inductive switch 611 is open. At this time, the normally open auxiliary contact 623 opens, and the normally closed auxiliary contact 642 closes. After the first branch 650 is de-energized, the normally closed switch 624 closes again, and the normally open switch 643 also closes after the power-off delay relay 661 has been de-energized for the second preset time. At this point, the current flowing from the power supply 670 can flow through the first line 610, through the normally closed switch 624, and then through the third line 630 to the third connection point 633, until it reaches the fourth line 640, passes through the normally closed auxiliary contact 642, and then through the second starting contactor 644, where it flows to the ground. Since the normally open switch 643 opens after the third preset time, the current continuously flowing through the second starting contactor 644 also opens after the third preset time.

[0078] Therefore, when the inductive switch 611 detects the sensed component 210 for the second time, and after the power-off delay relay 661 on the second branch 660 is de-energized for a second preset time, the normally open switch 643 remains closed for a third preset time. This allows the clamping assembly 200 to continue rotating forward for the second preset time before controlling the drive component 300 to reverse the clamping assembly 200 for a third preset time. After the clamping assembly 200 has moved for the third preset time, the normally open switch 643 will return to the open state. Therefore, the current will not continue to pass through the second starting contactor 644, and the drive component 300 will stop working, thus completing the welding cycle of the component 2 to be welded.

[0079] Optionally, in this embodiment, the control circuit is communicatively connected to the welding assembly 400. The welding assembly 400 can be started when the clamping assembly 200 starts to rotate, so that when the clamping assembly 200 starts to rotate, the welding assembly 400 starts at the same time, so that the welding work and the rotation of the clamping assembly 200 can be carried out almost synchronously, without the need for manual step-by-step control of the opening of the welding assembly 400 and the clamping assembly 200.

[0080] Optionally, in some embodiments, the welding assembly 400 can be turned off when the clamping assembly 200 stops rotating forward. That is, after the first control switch 612 is pressed, the welding assembly 400 can be turned on when the current begins to pass through the first start contactor 613. After the induction switch 611 senses the sensed part 210 for the second time, the current flowing from the power supply 670 cannot pass through the first start contactor 613. At this time, the welding assembly 400 is also turned off, completing the welding cycle.

[0081] In some other embodiments, the welding assembly 400 can also be shut off when the clamping assembly 200 stops reversing, that is, the welding assembly 400 can be shut off and the welding cycle is completed when the current cannot pass through the second starting contactor 644.

[0082] Optionally, in this embodiment, the aforementioned inductive switch 611 is a magnetic inductive switch 611, and the sensed element 210 is a magnetic element. Of course, in some other embodiments, the inductive switch 611 may also be other types of proximity switches, and the sensed element 210 may not be limited to magnetic elements.

[0083] In detail, in this embodiment, the control circuit also includes an emergency stop switch 614, which is disposed on the first line 610. The first end 621 of the second line 620 is located between the emergency stop switch 614 and the inductive switch 611. The emergency stop switch 614 is provided to facilitate the operator to control the welding device 1 to brake in an emergency.

[0084] Optionally, in some embodiments, the first control switch 612 and the second control switch 641 described above are linked switches 510, which can be opened and closed simultaneously.

[0085] In this embodiment, the welding device 1 also includes a control box 500 mounted on the frame 100, and the aforementioned control circuit 600 is installed inside the control box 500. Alternatively, the control circuit 600 can be integrated into a circuit board and installed inside the control box 500, while the aforementioned first control switch 612 can be located on the external panel of the control box 500. That is, the first control switch 612 is mounted on the frame 100 via the control box 500. Of course, an emergency stop switch 614 can also be installed on the external panel of the control box 500.

[0086] Please refer to Figure 3 Optionally, a forward / reverse switch 520, a linkage switch 510, and a speed adjustment switch 530 can also be installed on the external panel of the control box 500. Understandably, the panel can communicate with the aforementioned drive unit 300. The forward / reverse switch 520 can control the forward or reverse rotation of the drive unit 300 and the clamping assembly 200. When the linkage switch 510 is pressed, the drive unit 300 can be activated to rotate the clamping assembly 200, while simultaneously starting the welding assembly 400. The speed adjustment switch 530 can be understood as adjusting the rotation speed of the clamping assembly 200 driven by the drive unit 300.

[0087] Optionally, in this embodiment, the drive component 300 may include a motor and a transmission assembly. The transmission assembly may be a gearbox, where the power of the motor can be transmitted to the clamping assembly 200 through the gearbox to drive the clamping assembly 200 to rotate. The motor may also be a variable frequency motor, which allows for easy control of the motor's output speed, facilitating the operator to adjust the speed of the clamping assembly 200.

[0088] Please refer to Figure 1 and Figure 3 Optionally, in this embodiment, the clamping assembly 200 is mounted on the frame 100 via a driving member 300. The driving member 300 can swing relative to the frame 100 around a second axis. The first axis and the second axis form an angle, that is, the driving member 300 can swing relative to the frame 100 around the second axis. It can be understood that since the driving member 300 can drive the clamping assembly 200 to pitch and swing around the second axis, the attitude of the clamping assembly 200 can be adjusted so that the workpiece 2 to be welded can be welded on the clamping assembly 200 under different attitudes.

[0089] It should be noted that the drive component 300 has connecting shafts on both sides along the second axis. The axis of the connecting shaft is coaxial with the second axis. The connecting shaft is rotatably connected to the frame 100. A worm gear can be sleeved on the connecting shaft. The welding device 1 also includes a worm gear connected to the worm gear drive. A rotating handle can be provided on the worm gear to facilitate the operator to rotate the worm gear to adjust the posture of the clamping assembly 200. Moreover, since the worm gear has a self-locking characteristic, it can also ensure the stability of the posture of the clamping assembly 200 after adjustment.

[0090] Please refer to Figures 3-4 Optionally, the welding assembly 400 includes a welding frame 410 and a welding torch 416 mounted on the welding frame 410. The welding torch 416 can move on the welding frame 410 in the horizontal and / or vertical directions to facilitate the adjustment of the position of the welding torch 416, thereby facilitating the operator to adjust the position of the welding torch 416 to align it with the gap to be welded on the flange fitting.

[0091] Of course, in order to facilitate the operator to adjust the posture of the welding torch 416, the welding torch 416 can also rotate relative to the welding frame 410 around the third axis, which is parallel to the first axis.

[0092] The welding frame 410 may include a connecting seat 414, a first rod 411, a second rod 412, and a third rod 413. The connecting seat 414 is installed on the frame body 100. The first rod 411 is connected to the connecting seat 414 and extends along a first direction. The second rod 412 is movably connected to the first rod 411 and extends along a second direction. The third rod 412 is connected to the second rod 412 in the second direction and can move relative to the second rod 412 in the second direction and / or in the vertical direction. The third rod 413 extends along the vertical direction. The welding torch 416 is movably connected to the third rod 413. The first direction and the second direction form an angle. The vertical direction is perpendicular to the first direction and the second direction. The first direction is parallel to the first axis.

[0093] In detail, the welding assembly 400 also includes a connector 415, and the welding torch 416 is connected to the third member 413 through the connector 415. The welding torch 416 can rotate relative to the connector 415 about the third axis.

[0094] Of course, in order to ensure the stability of the position and posture of the welding torch 416 during welding, in an optional embodiment, the first rod 411 is provided with a first connecting hole 4111 extending in a first direction, and the second rod 412 moves on the first rod 411 through the first connecting hole 4111. The second rod 412 and the first rod 411 can be locked or unlocked by threaded fasteners.

[0095] Please refer to Figure 4 In detail, in this embodiment, the second rod 412 is provided with a plurality of first connecting teeth 4121 spaced apart along the second direction, and the third rod 413 is provided with a plurality of second connecting teeth 4131 spaced apart along the vertical direction. The welding assembly 400 also includes an adjustment assembly 420, which includes a first fastening member 421, a second fastening member 422, a first adjusting member 423 and a second adjusting member 424. The first fastening member 421 and the second fastening member 422 are fixedly connected.

[0096] The first fastening member 421 is sleeved on the second rod member 412 and exposes the first connecting tooth 4121. The first adjusting member 423 is connected to the first fastening member 421 and can rotate relative to the first fastening member 421. The first adjusting member 423 is provided with a first mating gear 4231 that meshes with the first connecting tooth 4121.

[0097] The second fastening member 422 is sleeved on the third rod member 413 and exposes the second connecting tooth 4131. The second adjusting member 424 is connected to the second fastening member 422 and can rotate relative to the second fastening member 422. The second adjusting member 424 is provided with a second mating gear 4241 that meshes with the second connecting tooth 4131.

[0098] Therefore, the third rod 413 can be moved in the second direction by rotating the first adjusting member 423, and the third rod 413 can be moved in the vertical direction by rotating the second adjusting member 424.

[0099] In detail, the first fastening member 421 includes a first fastening part 4211, a second fastening part 4212, and a first fastener 4213. The first fastening part 4211 and the second fastening part 4212 are fastened to each other on the second rod 412 and can be fastened or unfastened by the first fastener 4213. After the first fastening part 4211 and the second fastening part 4212 are fastened, the first connecting tooth 4121 on the second rod 412 is exposed. The first fastener 4213 is a threaded fastener, that is, the tightness of the first fastening part 4211 and the second fastening part 4212 fastened on the second rod 412 can be adjusted by the threaded fastener, so that the first fastening member 421 and the second rod 412 can be locked or unlocked.

[0100] Similarly, the second fastening member 422 includes a third fastening part 4221, a fourth fastening part 4222, and a second fastener 4223. The third fastening part 4221 and the fourth fastening part 4222 are fastened to each other on the third rod 413 and can be fastened or unfastened by the second fastener 4223. After the third fastening part 4221 and the fourth fastening part 4222 are fastened, the second connecting tooth 4131 on the third rod 413 is exposed. The second fastener 4223 is a threaded fastener, that is, the tightness of the third fastening part 4221 and the fourth fastening part 4222 fastening on the third rod 413 can be adjusted by the threaded fastener, so that the third rod 413 and the second fastening member 422 can be locked or unlocked.

[0101] Optionally, the connector 415 is sleeved on the third member 413, and the connector 415 can be locked and unlocked with the third member 413 by means of threaded fasteners.

[0102] Of course, since the welding torch 416 can rotate relative to the connecting member 415 around the third axis, the welding torch 416 is hinged to the connecting member 415, and the welding torch 416 can also be locked and unlocked to the connecting member 415 by threaded fasteners.

[0103] Of course, in other embodiments, the second rod 412 and the first rod 411 can be moved not only through the first connecting hole 4111, nor can they be locked or unlocked only through threaded fasteners, as long as the second rod 412 can be movably connected to the first rod 411. Similarly, the second rod 412 and the third rod 413 can be connected not only through the adjustment component mentioned above, as long as the third rod 413 can be movably connected to the second rod 412. This is a conventional structure in the field of welding brackets, and the specific structure of the welding bracket 410 is not limited here.

[0104] In summary, the welding device 1 provided in this embodiment of the present invention includes a frame 100, a clamping assembly 200, a welding assembly 400, a driving component 300, and a control circuit 600. The clamping assembly 200 is mounted on the frame 100 and can rotate relative to the frame 100 around a first axis. The clamping assembly 200 is used to fix and clamp the workpiece 2 to be welded. The driving component 300 is mounted on the frame 100 and connected to the clamping assembly 200. The driving component 300 is used to drive the clamping assembly 200 to rotate around the first axis. The welding assembly 400 is mounted on the frame 100 and is used to weld the workpiece 2 to be welded on the clamping assembly 200. The control circuit 600 is used to control the driving component 300 to drive the clamping assembly 200 to rotate clockwise by a first angle, then counterclockwise by a second angle, and then stop the machine. The control circuit 600 can control the drive component 300 to drive the clamping assembly 200 to rotate forward by a first angle, then reverse by a second angle, and then stop. This enables automatic welding, eliminating the need for manual labor to rotate the turntable with one hand and hold the welding gun 416 with the other. This frees up manual labor, improves welding efficiency, and ensures the stability of the overall welding quality of the flange fittings.

[0105] The above description is only a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this utility model should be included within the protection scope of this utility model.

Claims

1. A welding apparatus, characterized in that, include: Frame (100); A clamping assembly (200) is mounted on the frame (100) and can rotate relative to the frame (100) about a first axis. The clamping assembly (200) is used to fix the workpiece (2) to be welded. A driving component (300) is mounted on the frame (100) and connected to the clamping assembly (200) for driving the clamping assembly (200) to rotate about the first axis; A welding assembly (400) is mounted on the frame (100) and is used to weld the workpiece (2) to be welded on the clamping assembly (200). The control circuit (600) is used to control the drive unit (300) to drive the clamping assembly (200) to rotate forward by a first angle, then reverse by a second angle, and then stop.

2. The welding apparatus according to claim 1, characterized in that: The clamping assembly (200) is provided with a sensing element (210), and the control circuit (600) includes a sensing switch (611) disposed on the frame (100). The sensing switch (611) is used to detect the sensing element (210). The control circuit (600) includes a first circuit unit and a second circuit unit electrically connected. The first circuit unit is used to control the drive unit (300) to drive the clamping assembly (200) to rotate forward by a first angle before the sensing switch (611) senses the sensing element (210) for the second time. The second circuit unit is used to control the drive unit (300) to drive the clamping assembly (200) to rotate backward by a second angle and then stop the machine when the sensing switch (611) senses the sensing element (210) for the second time.

3. The welding apparatus according to claim 2, characterized in that: The control circuit (600) also includes a power supply (670). The first circuit unit includes a first line (610) and a second line (620). The first line (610) is sequentially provided with the induction switch (611), the first control switch (612), and the first start contactor (613). The two ends of the first line (610) are respectively connected to the power supply (670) and ground. After the first start contactor (613) is energized, it is used to send a rotation signal in the forward direction to the drive (300). When the induction switch (611) detects the sensed component (210), the induction switch (611) is disconnected. The second line (620) includes a first end (621) and a second end (622) that are opposite to and electrically connected to the first line (610). The first end (621) is located between the power supply (670) and the inductive switch (611), and the second end (622) is located between the first control switch (612) and the first start contactor (613). The second line (620) is provided with a normally open auxiliary contact (623), which closes when current passes through the first start contactor (613).

4. The welding apparatus according to claim 3, characterized in that: The first circuit unit further includes a third line (630) and a first branch (650); The second line (620) is also provided with a normally closed switch (624) and the normally closed switch (624) is close to the power supply (670) relative to the normally open auxiliary contact (623). The third line (630) has a first connection point (631) and a second connection point (632). The first connection point (631) is electrically connected to the first line (610) and is located between the inductive switch (611) and the first control switch (612). The second connection point (632) is electrically connected to the second line (620) and is located between the normally closed switch (624) and the normally open auxiliary contact (623). The two ends of the first branch (650) are respectively connected to the second line (620) and ground. The first branch (650) is located on the side of the normally open auxiliary contact (623) away from the normally closed switch (624). A power-on delay relay (651) is provided on the first branch (650). The power-on delay relay (651) is linked with the normally closed switch (624). When the inductive switch (611) detects the sensed object (210) for the first time, the inductive switch (611) is opened, and the normally closed switch (624) is opened after a first preset time. After the first preset time, the sensed object (210) passes the inductive switch (611).

5. The welding apparatus according to claim 4, characterized in that: The second circuit unit includes a fourth line (640) and a second branch (660). The fourth circuit (640) is sequentially provided with a second control switch (641), a normally closed auxiliary contact (642), a normally open switch (643), and a second starting contactor (644). The two ends of the fourth circuit (640) are respectively connected to the power supply (670) and ground. The normally closed auxiliary contact (642) is linked with the normally open auxiliary contact (623). After the second starting contactor (644) is energized, it is used to send a reverse rotation signal to the driving component (300). The third line (630) also has a third connection point (633), which is electrically connected to the fourth line (640) and located between the second control switch (641) and the normally closed auxiliary contact (642); The two ends of the second branch (660) are respectively connected to the second line (620) and ground. The second branch (660) is located on the side of the normally open auxiliary contact (623) away from the normally closed switch (624). A power-off delay relay (661) is provided on the second branch (660). The power-off delay relay (661) is linked with the normally open switch (643). When the inductive switch (611) detects the sensed object (210) for the second time, the inductive switch (611) is opened, the normally closed switch (624) is closed, the normally open switch (643) is closed at a second preset time, and the normally open switch (643) is opened after a third preset time.

6. The welding apparatus according to claim 3, characterized in that: The control circuit (600) further includes an emergency stop switch (614), which is disposed on the first line (610), and the first end (621) is located between the emergency stop switch (614) and the inductive switch (611). And / or the inductive switch (611) is a magnetic inductive switch (611), and the sensed element (210) is a magnetic element.

7. The welding apparatus according to claim 1, characterized in that: The control circuit (600) is communicatively connected to the welding assembly (400), which can be started when the clamping assembly (200) starts to rotate forward.

8. The welding apparatus according to claim 1, characterized in that: The clamping assembly (200) is mounted on the frame (100) via the drive member (300), and the drive member (300) can swing relative to the frame (100) about a second axis, the first axis and the second axis forming an angle.

9. The welding apparatus according to claim 1, characterized in that: The welding assembly (400) includes a welding frame (410) and a welding torch (416) mounted on the welding frame (410), the welding torch (416) being movable on the welding frame (410) in a horizontal and / or vertical direction.

10. The welding apparatus according to claim 9, characterized in that: The welding frame (410) includes a connecting seat (414), a first rod (411), a second rod (412), and a third rod (413). The connecting seat (414) is installed on the frame body (100). The first rod (411) is connected to the connecting seat (414) and extends along a first direction. The second rod (412) is movably connected to the first rod (411) and extends along a second direction. The third rod (413) is connected to the second rod (412) and can move relative to the second rod (412) in the second direction and / or the vertical direction. The third rod (413) extends along the vertical direction. The welding torch (416) is movably connected to the third rod (413). The first direction and the second direction form an angle. The vertical direction is perpendicular to the first direction and the second direction. The first direction is parallel to the first axis. And / or the welding torch (416) can rotate relative to the welding frame (410) about a third axis, which is parallel to the first axis.

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