Multi-point welding mechanism and welding robot

Abstract

The utility model discloses a multi-point welding mechanism and a welding robot, and relates to the technical field of new energy automobile manufacturing. The multi-point welding mechanism comprises a supporting part, a plurality of welding parts and a first driving part; the welding parts are arranged on the supporting part at intervals, the first ends of the welding parts are connected with two welding guns which are oppositely arranged at intervals, a welding space is formed between the two welding guns, at least one welding gun is rotationally connected with the welding parts, and the first driving part is arranged on the welding parts and connected with the at least one welding gun; the first driving part drives the welding guns to rotate relative to the first end of the welding part, so that the two welding guns get close to or away from the welding space. The problems that in the prior art, due to the fact that spot welding guns are independently installed on robots, more robots need to be deployed under the condition that the same welding workload is handled, the equipment cost is greatly increased, and when a single robot is connected with a plurality of spot welding guns for switching operation, only one-time switching operation can be guaranteed to correspond to one welding spot for welding, and the welding efficiency is high are solved. And the welding efficiency is low.

Description

Technical Field

[0001] The present application relates to the technical field of new energy vehicle manufacturing, and in particular to a multi-spot welding mechanism and a welding robot. Background Art

[0002] In the production of new energy vehicles, resistance spot welding is a commonly used connection process in the production of body frames. The commonly used welding equipment in the process is a spot welding gun. After the stamped sheet metal parts are positioned and clamped, two or more sheet metal parts are welded together by a spot welding gun to assemble the required body frame.

[0003] In the prior art, spot welding guns are usually independently installed on corresponding robots for use. Multiple robots are set up at welding stations to achieve welding at different positions, or two or more spot welding guns are connected to a single robot at the same time, and welding of welding points at different positions is achieved by switching the spot welding guns.

[0004] However, the inventors have found that there are deficiencies in the prior art. Since the spot welding guns in the prior art are independently installed on the robot, more robots need to be deployed to handle the same welding workload, which greatly increases the equipment cost. In addition, when a single robot is connected to multiple spot welding guns for switching operations, it can only ensure that one switching operation corresponds to one welding point for welding, resulting in low welding efficiency. Utility Model Content

[0005] The purpose of the embodiments of the present application is to provide a multi-spot welding mechanism and a welding robot, so as to solve the problem that the spot welding guns in the prior art are independently installed on the robot, so more robots need to be deployed to handle the same welding workload, which greatly increases the equipment cost, and when a single robot is connected to multiple spot welding guns for switching operations, it can only ensure that one switching operation corresponds to one welding point for welding, resulting in low welding efficiency.

[0006] In order to solve the above technical problems, the embodiments of the present application provide the following technical solutions:

[0007] The first aspect of the present application provides a multi-spot welding mechanism, comprising

[0008] Supporting part;

[0009] A plurality of welding parts, wherein the plurality of welding parts are arranged on the support part at intervals, a first end of each welding part is connected to two welding guns arranged at intervals and opposite to each other, a welding space is formed between the two welding guns, and at least one welding gun is rotatably connected to the welding part;

[0010] a first driving part, the first driving part being arranged on the welding part and connected to at least one welding gun;

[0011] The first driving part drives the welding gun to rotate relative to the first end of the welding part, so that the two welding guns are close to or away from the welding space.

[0012] In some embodiments, in the aforementioned multi-spot welding mechanism, a plurality of welding parts are horizontally spaced apart and arranged on the support part.

[0013] In some embodiments, in the aforementioned multi-spot welding mechanism, the second end of at least one welding portion is slidably connected to the supporting portion; and the second driving portion is disposed on the supporting portion and connected to the second end of at least one welding portion.

[0014] In some embodiments, the aforementioned multi-spot welding mechanism, wherein the welding part includes a first welding part and a second welding part, the first welding part and the second welding part are horizontally spaced apart and arranged on the supporting part, the second end of the first welding part is fixedly connected to the supporting part, and the second end of the second welding part is slidably connected to the supporting part; the supporting part is provided with a slide rail; the second end of the second welding part is provided with a slider, the slider is slidably connected to the slide rail and connected to the second driving part.

[0015] In some embodiments, the aforementioned multi-spot welding mechanism further includes: a rotating seat, the rotating seat is arranged corresponding to the welding part, the first end of the rotating seat is rotatably connected to the second end of the welding part; the second end of at least one rotating seat is slidably connected to the support part.

[0016] In some embodiments, the aforementioned multi-spot welding mechanism, wherein the two welding guns connected to the first end of each welding part include a fixed welding gun and a rotating welding gun, the fixed welding gun is fixedly connected to the welding part, and the rotating welding gun is rotatably connected to the welding part; the welding part includes a first frame, the fixed welding gun is fixedly connected to the first frame, the rotating welding gun includes a second frame, the second frame is rotatably connected to the first frame and is at least partially embedded in the first frame; the second driving part includes a cylinder and a cylinder push rod, the cylinder is arranged on the first frame, one end of the cylinder push rod is connected to the cylinder, and the other end is connected to the second frame.

[0017] In some embodiments, the aforementioned multi-spot welding mechanism, wherein the welding gun is bent, the bent welding gun includes a vertical first rod segment and a horizontal second rod segment, the two first rod segments of the two welding guns are arranged in parallel, the two second rod segments of the two welding guns are spaced and arranged opposite to each other, and a welding space is formed between the two second rod segments; wherein the first end of the first rod segment is connected to the welding part, the second end of the first rod segment is connected to the first end of the second rod segment, and the second end of the second rod segment is a welding end for welding.

[0018] In some embodiments, the aforementioned multi-spot welding mechanism, wherein the first rod segment includes a first shaft rod and a second shaft rod; the first end of the first shaft rod is connected to the welding portion, the second end of the second shaft rod is connected to the second rod segment, the second end of the first shaft rod is provided with a first inner cavity, and the first end of the second shaft rod is at least partially connected to the side wall of the first inner cavity in a telescopic manner.

[0019] In some embodiments, the aforementioned multi-spot welding mechanism, wherein the second rod segment includes a third shaft rod and a fourth shaft rod; the first end of the third shaft rod is connected to the first rod segment, the second end of the third shaft rod is provided with a second inner cavity, the first end of the fourth shaft rod is telescopically connected to the side wall of the second inner cavity, and the second end of the fourth shaft rod is a welding end; the side of the second inner cavity away from the fourth shaft rod is the cavity bottom, and an internal compression spring is provided between the cavity bottom and the first end of the fourth shaft rod.

[0020] A second aspect of the present application provides a welding robot, comprising:

[0021] Robot body;

[0022] The aforementioned multi-spot welding mechanism;

[0023] The robot body is connected to the supporting part of the multi-spot welding mechanism.

[0024] By means of the above technical solution, the multi-spot welding mechanism and welding robot of the utility model have at least the following advantages:

[0025] The present application provides a multi-spot welding mechanism and a welding robot, the multi-spot welding mechanism includes a support part, a plurality of welding parts and a first driving part. The plurality of welding parts are arranged on the support part at intervals, the first end of the welding part is connected to two welding guns arranged at intervals and opposite to each other, a welding space is formed between the two welding guns, at least one welding gun is rotatably connected to the welding part, the first driving part is arranged on the welding part and connected to at least one welding gun; wherein the first driving part drives the welding gun to rotate relative to the first end of the welding part, so that the two welding guns are close to or away from the welding space. The plurality of welding parts provided in the present application can perform welding operations on multiple welding points at the same time, and only one welding robot and one mechanism need to be deployed to realize welding of multiple points, and there is no need to switch the welding gun, which greatly saves equipment costs and improves welding work efficiency. At the same time, when welding is required, the workpiece is placed in the welding space formed between the two welding guns, so that the two surfaces of the workpiece can be welded at the same time, further improving the efficiency of welding operations. Through the application of the utility model, the problem that the spot welding guns in the prior art are independently installed on the robot, so more robots need to be deployed to handle the same welding workload, which greatly increases the equipment cost, and when a single robot is connected to multiple spot welding guns for switching operations, it can only ensure that one switching operation corresponds to one welding point for welding, resulting in low welding efficiency is solved. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the detailed description below with reference to the accompanying drawings, the above and other purposes, features and advantages of the exemplary embodiments of the present application will become easy to understand. In the accompanying drawings, several embodiments of the present application are shown in an exemplary and non-limiting manner, and the same or corresponding reference numerals represent the same or corresponding parts, wherein:

[0027] Figure 1 The isometric structural diagram of a multi-spot welding mechanism provided by an embodiment of the utility model is schematically shown;

[0028] Figure 2 The schematic diagram of the main axis structure of another multi-spot welding mechanism provided by the embodiment of the utility model is shown schematically;

[0029] Figure 3 The schematic diagram of the partial isometric structure of a welding chamber of a multi-spot welding mechanism provided by an embodiment of the utility model is shown schematically;

[0030] Figure 4 A side structural diagram of another multi-spot welding mechanism provided by an embodiment of the utility model is schematically shown.

[0031] Description of Figure Numbers:

[0032] 1. Support part; 11. Slide rail;

[0033] 2. welding part; 21. welding gun; 22. welding space; 23. first welding part; 24. second welding part; 25. first frame; 211. first rod section; 212. second rod section; 213. fixed welding gun; 214. rotating welding gun; 241. slider; 2141. second frame;

[0034] 3. First driving unit; 31. Cylinder; 32. Cylinder push rod;

[0035] 4. Second driving unit. DETAILED DESCRIPTION

[0036] The following is a further detailed description of the implementation methods of the present application in conjunction with the accompanying drawings and examples. The detailed descriptions of the following examples and the accompanying drawings are used to exemplarily illustrate the principles of the present application, but cannot be used to limit the scope of the present application. The present application can be implemented in many different forms and is not limited to the specific embodiments disclosed herein, but includes all technical solutions that fall within the scope of the claims.

[0037] It should be noted that, in the description of this application, unless otherwise specified, the meaning of "multiple" is greater than or equal to two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating the orientation or positional relationship, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application. When the absolute position of the object being described changes, the relative positional relationship may also change accordingly.

[0038] In addition, the words "first", "second" and similar words used in this application do not indicate any order, quantity or importance, but are only used to distinguish different parts. "Vertical" does not mean vertical in the strict sense, but is within the tolerance range. "Parallel" does not mean parallel in the strict sense, but is within the tolerance range. "Include" or "comprising" and similar words mean that the elements before the word include the elements listed after the word, and do not exclude the possibility of including other elements.

[0039] It should also be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances. All terms used in this application have the same meaning as understood by ordinary technicians in the field to which this application belongs, unless otherwise specifically defined. It should also be understood that terms defined in general dictionaries, such as general dictionaries, should be interpreted as having a meaning consistent with their meaning in the context of the relevant technology, and should not be interpreted in an idealized or extremely formal sense, unless explicitly defined here.

[0040] Technologies, methods, and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the technologies, methods, and equipment should be considered part of the specification.

[0041] Embodiment 1

[0042] like Figure 1As shown, the first aspect of the present application provides a multi-spot welding mechanism, which includes a supporting portion 1, a plurality of welding portions 2 and a first driving portion 3; the plurality of welding portions 2 are arranged on the supporting portion 1 at intervals, the first end of the welding portion 2 is connected to two welding guns that are spaced and opposite to each other, a welding space 22 is formed between the two welding guns, at least one welding gun is rotatably connected to the welding portion 2, and the first driving portion 3 is arranged on the welding portion 2 and connected to at least one welding gun; wherein the first driving portion 3 drives the welding gun to rotate relative to the first end of the welding portion 2, so that the two welding guns are close to or away from the welding space 22.

[0043] Specifically, the support part 1 can be a structure such as a bracket or a support pedestal, which is used to provide a support position and a support area to support the welding part 2. In order to cooperate with the welding robot, the support part 1 needs to be provided with a corresponding structure that is easy to install. The specific structure depends on the needs. Note that the installation structure does not interfere with the normal operation of the welding part 2 and the welding gun thereon. Furthermore, for the sake of aesthetics and dust prevention of the mechanism, structures such as an accordion cover or a dust cover can be provided on the outside of the support part 1. Note that the installation and setting should not affect the normal operation of the welding part 2 and the welding gun thereon. Therefore, the above structure can effectively prevent dust from falling into the interior of the mechanism, and also improve the overall aesthetics of the mechanism.

[0044] The present application is provided with a plurality of welding parts 2, the specific number is not limited, and is determined according to the number of welding points that the multi-point welding mechanism of the present application wants to process simultaneously in one welding operation. The plurality of welding parts 2 are arranged on the support part 1 at intervals, maintaining a safe distance between each welding part 2, and will not interfere with each other's work. Whether to space them horizontally or in other trajectories depends on actual needs. For example, it is feasible to set all welding parts 2 to be spaced in a straight line, or to require a certain welding part 2 to be arranged in a certain curved trajectory relative to other welding parts 2, or to set several welding parts 2 to maintain a certain curved trajectory.

[0045] The function of the welding part 2 is to connect and bear the support part 1 and the welding gun. It can be various mechanical structures, frames, connectors, connecting blocks, etc., and the specific form is not limited. The first end of each welding part 2 is connected to two welding guns that are spaced and relatively arranged. The welding gun can be in the shape of an L-shaped rod, or it can be in the shape of a bent rod. The bending direction keeps the two welding guns bent toward each other, or it can be two horizontal rods arranged relatively to each other, so that a welding space 22 is formed between the two welding guns in the above structure. When the workpiece to be welded is placed in the welding space 22, the two welding guns can weld the front and back sides of the workpiece at the same time, so that the welding guns of several welding parts 2 can weld the front and back sides of the workpiece at the same time, realizing the high-efficiency welding operation of this application. It should be noted that the welding gun can also be replaced with automatic equipment such as a stud welding gun or a glue gun, so as to achieve the purpose of reducing process costs and increasing efficiency.

[0046] According to the welding points required, two welding guns can be set for each welding part 2 and not weld at the same time. In one case, one welding gun welds and the other welding gun can press against the unwelded side of the workpiece to play a role in positioning and providing support.

[0047] At least one welding gun is rotatably connected to the welding part 2, and the rotation is realized by the first driving part 3. The form of the rotatable connection can be a bearing connection, a pin shaft and a pin hole connection, a hinge, etc. The specific rotatable connection form is not limited, as long as the rotatable connection between the welding gun and the welding part 2 can be realized. The first driving part 3 can be a driving device such as a hydraulic cylinder, a pneumatic cylinder, a servo motor, etc., and the drive is realized by a push rod, a guide column, a connecting rod, a gear, a screw, etc., and the specific form is not limited.

[0048] In one embodiment in which at least one welding gun is rotatably connected to the welding part 2, one welding gun is kept fixed, and one of the welding guns is driven to rotate relative to the first end of the welding part 2, so that the two welding guns are moved closer to or farther away from the welding space 22, that is, closer to and farther away from the workpiece being processed. Welding is performed when they are close, and welding is stopped when they are farther away. The workpiece is transported away during this time. In another embodiment, the first drive part 3 simultaneously drives the two welding guns to rotate relative to the first end of the welding part 2, so that the two welding guns are moved closer to or farther away from the welding space 22.

[0049] It should be noted that, during the welding process, in order to achieve welding at different welding points, welding at different positions can be achieved by externally adjusting the position of the workpiece to be welded without changing the preset position of the welding space 22 of the present application.

[0050] The present application provides a multi-spot welding mechanism, which includes a support part 1, a plurality of welding parts 2 and a first driving part 3. The plurality of welding parts 2 are arranged on the support part 1 at intervals, and the first end of the welding part 2 is connected to two welding guns arranged at intervals and opposite to each other, and a welding space 22 is formed between the two welding guns. At least one welding gun is rotatably connected to the welding part 2, and the first driving part 3 is arranged on the welding part 2 and connected to at least one welding gun; wherein the first driving part 3 drives the welding gun to rotate relative to the first end of the welding part 2, so that the two welding guns are close to or away from the welding space 22. The plurality of welding parts 2 provided in the present application can perform welding operations on multiple welding points at the same time, and only one welding robot and one mechanism need to be deployed to realize welding of multiple points, and there is no need to switch the welding gun, which greatly saves equipment costs and improves welding work efficiency. At the same time, when welding is required, the workpiece is placed in the welding space 22 formed between the two welding guns, so that the two surfaces of the workpiece can be welded at the same time, further improving the efficiency of the welding operation. Through the application of the utility model, the problem that the spot welding guns in the prior art are independently installed on the robot, so more robots need to be deployed to handle the same welding workload, which greatly increases the equipment cost, and when a single robot is connected to multiple spot welding guns for switching operations, it can only ensure that one switching operation corresponds to one welding point for welding, resulting in low welding efficiency is solved.

[0051] In some embodiments, a plurality of welding portions 2 are horizontally spaced apart and arranged on the supporting portion 1 .

[0052] Specifically, in order to improve the positioning and welding synchronization of the welding part 2 and the welding gun connected thereto during welding, and also to facilitate the manufacture and processing of the multi-point welding mechanism of the present application, the present application sets a plurality of welding parts 2 which are horizontally and spaced apart on the support part 1, so that when welding the workpiece to be welded, the welding guns of the horizontally spaced welding parts 2 can simultaneously contact and position one side of the workpiece to be welded, and the other side is similar, thereby improving the positioning and welding synchronization of the welding work. At the same time, the uniformly arranged welding parts 2 are more convenient for the installation and placement of the mechanism, saving manpower and material costs.

[0053] In some embodiments, the second end of at least one welding portion 2 is slidably connected to the supporting portion 1 ; the second driving portion 4 is disposed on the supporting portion 1 and connected to the second end of at least one welding portion 2 .

[0054] Specifically, in order to enable the multi-point welding mechanism of the present application to adjust the position according to different welding points and enhance the flexibility of the mechanism, the present application sets the second end of at least one welding part 2 to be slidably connected to the support part 1, so that any number of welding can be achieved by sliding on the support part 1, and the welding gun of the welding part 2 can be adjusted to correspond to different welding points. The sliding connection method can be that a sliding block is set on the welding part 2 to slide relative to the guide rail on the support part 1, or a pulley is set on the welding part 2 to slide relative to the slide groove on the support part 1, etc. The specific sliding connection method is not limited. The second end of the welding part 2 that needs to slide is connected to the second drive part 4, and the second drive part 4 can be driven by a servo motor to drive the screw connected to the second end of the welding part 2, or it can be driven by a pneumatic cylinder connected to the guide column, and the specific form is not limited.

[0055] In one specific embodiment of the second driving part 4, the second driving part 4 includes a servo motor, a small pulley, a belt, a large pulley and a lead screw, the servo motor is arranged on the support part 1, the servo motor is connected to the bearing of the small pulley, the belt connects the small pulley and the large pulley, the lead screw is passed through the slide groove, the large pulley is connected to the first end bearing of the lead screw, and the second end of the lead screw is connected to the second end of the welding part 2. When driving, the servo motor drives the small pulley to rotate, thereby driving the large pulley connected to the belt to rotate, the large pulley drives the lead screw to rotate, and the welding part 2 is displaced under the drive of the lead screw, thereby realizing the sliding of the welding part 2 relative to the support part 1.

[0056] like Figure 2 As shown, in some embodiments, the welding part 2 includes a first welding part 23 and a second welding part 24, and the first welding part 23 and the second welding part 24 are horizontally spaced apart and arranged on the support part 1, the second end of the first welding part 23 is fixedly connected to the support part 1, and the second end of the second welding part 24 is slidably connected to the support part 1; the support part 1 is provided with a slide rail 11; the second end of the second welding part 24 is provided with a slider 241, and the slider 241 is slidably connected to the slide rail 11 and connected to the second driving part 4.

[0057] Specifically, the present application sets two welding parts 2 in some embodiments, and one of the two welding parts 2 is a fixed first welding part 23, and the other is a second welding part 24 slidably connected to the support part 1, and the second welding part 24 is slidably connected to the slide rail 11 set on the support part 1 through a slider 241 set at its second end. When welding operation is required, the position of the first welding part 23 can be located first, and two fixed preset welding points can be determined. When the welding point needs to be adjusted, the second welding part 24 can be slid to correspond to the new welding position. It should be noted that during the welding process, in order to achieve welding of different welding points, the position of the second welding part 24 can be adjusted while the position of the workpiece to be welded is adjusted externally to achieve welding of different positions.

[0058] In some embodiments, it also includes: a rotating seat, the rotating seat is correspondingly arranged with the welding part 2, the first end of the rotating seat is rotatably connected with the second end of the welding part 2; the second end of at least one rotating seat is slidably connected with the supporting part 1.

[0059] Specifically, in order to enable the multi-point welding mechanism of the present application to adjust the position according to different welding points and enhance the flexibility of the mechanism, on the basis of enabling the second welding part 24 to slide relative to the support part 1, the present application further provides a rotating seat, which is arranged corresponding to the welding part 2, and the first end of the rotating seat is rotatably connected to the second end of the welding part 2; the second end of at least one rotating seat is slidably connected to the support part 1. The rotating seat can be in the form of an articulated seat, a pin support, etc., and the first welding part 23 or the second welding part 24 can be driven to rotate in the horizontal direction in which it is set, and rotate to a certain angle, so that the corresponding four welding guns on it can be welded corresponding to the adjusted new welding points.

[0060] like Figure 3 As shown, in some embodiments, the welding gun is bent, and the bent welding gun includes a vertical first rod segment 211 and a horizontal second rod segment 212, the two first rod segments 211 of the two welding guns are arranged in parallel, the two second rod segments 212 of the two welding guns are spaced and arranged opposite to each other, and a welding space 22 is formed between the two second rod segments 212; wherein, the first end of the first rod segment 211 is connected to the welding part 2, the second end of the first rod segment 211 is connected to the first end of the second rod segment 212, and the second end of the second rod segment 212 is a welding end for welding.

[0061] Specifically, in order to increase the welding space 22 provided by the present application, so as to facilitate welding operations on workpieces of different sizes to be welded, the welding gun of the present application is bent, thereby increasing the volume of the welding space 22 formed between the two welding guns. And the bent welding gun includes a vertical first rod segment 211 and a horizontal second rod segment 212, the two first rod segments 211 of the two welding guns are arranged in parallel, the two second rod segments 212 of the two welding guns are spaced and arranged relative to each other, and the welding space 22 is formed between the two second rod segments 212. The longer the length of the first rod segment 211, the larger the volume of the welding space 22. It should be noted that the welding space 22 only determines the accommodation space when the workpiece is placed for welding in the multi-point welding mechanism of the present application, and the welding position still depends on the welding end of the second rod segment 212 that is relatively arranged. Therefore, the lengths of the first rod segment 211 and the second rod segment 212 are set according to actual needs to ensure the stability of the mechanism during welding operations, while considering the driving cost of the first driving unit 3.

[0062] In some embodiments, the first rod segment 211 includes a first shaft and a second shaft; the first end of the first shaft is connected to the welding portion 2, the second end of the second shaft is connected to the second rod segment 212, the second end of the first shaft is provided with a first inner cavity, and the first end of the second shaft is at least partially connected to the side wall of the first inner cavity in a telescopic manner.

[0063] Specifically, in order to enable the multi-point welding mechanism of the present application to adjust the position according to different welding points and enhance the flexibility of the mechanism, the first rod segment 211 of the present application is retractable, specifically, the first rod segment 211 includes a first shaft and a second shaft, the first end of the first shaft is connected to the welding part 2, the second end of the second shaft is connected to the second rod segment 212, the second end of the first shaft is provided with a first inner cavity, and the first end of the second shaft is at least partially connected to the side wall of the first inner cavity in a retractable manner. The first shaft and the second shaft can be set in the form of a sleeve-type telescopic rod, or a gear can be set at the first end of the second shaft, and a rack can be set in the first inner cavity to achieve telescopic expansion and contraction through the cooperation of the gear and rack, or a multi-stage connecting rod can be set in the first inner cavity to achieve telescopic expansion and contraction, and the specific form is not limited. Through the retractable setting of the first rod segment 211, the ability of the present application to adjust the position of the welding gun for different welding points is further realized.

[0064] In some embodiments, the second rod segment 212 includes a third shaft and a fourth shaft; the first end of the third shaft is connected to the first rod segment 211, the second end of the third shaft is provided with a second inner cavity, the first end of the fourth shaft is telescopically connected to the side wall of the second inner cavity, and the second end of the fourth shaft is a welding end; the side of the second inner cavity away from the fourth shaft is the cavity bottom, and an internal compression spring is provided between the cavity bottom and the first end of the fourth shaft.

[0065] Specifically, in order to enable the multi-point welding mechanism of the present application to provide a buffer and form a suitable push force when the welding end of the welding gun contacts the workpiece for welding, the present application provides elastic force in the horizontal second rod segment 212 through the telescopic cooperation of the fourth shaft rod and the third shaft rod, and through the built-in compression spring set between the bottom of the second inner cavity on the side away from the fourth shaft rod and the first end of the fourth shaft rod. When the welding end contacts the workpiece for welding, the built-in spring applies elastic force to the third shaft rod in the opposite direction, so that a buffer is formed between the entire second rod segment 212 and the workpiece during welding, reducing the pressure applied to the workpiece surface by the welding end, thereby forming a suitable push force to protect the workpiece; when the welding end is away from the workpiece, the built-in spring pulls the fourth shaft rod to help the second rod segment 212 quickly move away from the workpiece, thereby reducing the stagnation time of the welding gun resetting when welding is not required, and also ensuring that the workpiece completed this time can be quickly taken out of the welding space 22 after welding is completed, and then the next workpiece to be welded can enter the welding space 22 more quickly, thereby speeding up the working rhythm of the mechanism of the welding operation and improving the work efficiency of the welding operation.

[0066] like Figure 4 As shown, in some embodiments, the two welding guns connected to the first end of each welding part 2 include a fixed welding gun 213 and a rotating welding gun 214, the fixed welding gun 213 is fixedly connected to the welding part 2, and the rotating welding gun 214 is rotatably connected to the welding part 2; the welding part 2 includes a first frame 25, the fixed welding gun 213 is fixedly connected to the first frame 25, and the rotating welding gun 214 includes a second frame 2141, the second frame 2141 is rotatably connected to the first frame 25 and is at least partially embedded in the first frame 25; the second driving part 4 includes a cylinder 31 and a cylinder push rod 32, the cylinder 31 is arranged on the first frame 25, one end of the cylinder push rod 32 is connected to the cylinder 31, and the other end is connected to the second frame 2141.

[0067] Specifically, one of the two welding guns connected to the first end of each welding portion 2 of the present application is a fixed welding gun 213 and the other is a rotating welding gun 214. The cylinder 31 drives the cylinder top rod 32 to connect the second frame 2141 connected to the rotating welding gun 214, so that the two welding guns can move closer to and farther from the welding space 22. The welding portion 2 includes a first frame 25, the fixed welding gun 213 is fixedly connected to the first frame 25, and the rotating welding gun 214 includes a second frame 2141, the second frame 2141 is rotatably connected to the first frame 25 and at least partially embedded in the first frame 25, the rotational connection between the second frame 2141 and the first frame 25 can be a pin hole pin shaft or hinge connection, and the second frame 2141 is at least partially embedded in the first frame 25 to save the space required for the structure and improve the tightness of the connection while preventing the two frames from colliding and interfering with the normal rotation of the rotating welding gun 214.

[0068] The cylinder 31 is disposed on the first frame 25 and is fixedly supported by a connecting structure, ensuring that the cylinder push rod 32 can stably output a driving force to the second frame 2141 , so that the second frame 2141 rotates relative to the first frame 25 .

[0069] Embodiment 2

[0070] A second aspect of the present application provides a welding robot, comprising a robot body and the above-mentioned multi-spot welding mechanism, wherein the robot body is connected to a support portion 1 of the multi-spot welding mechanism.

[0071] Specifically, the specific structure of the multi-spot welding mechanism refers to the first embodiment and will not be described in detail here.

[0072] The robot body can be clamped and set with the support part 1 of the multi-spot welding mechanism, and the clamping is achieved by the mechanical structure set on the robot body and the corresponding connection with the support part 1; the support part 1 can also be provided with a mounting support, and the robot can be provided with a mounting head, and the mounting head is bolted to the mounting support to achieve the cooperation between the two; it can also be a magnetic suction structure to achieve the suction connection of the support part 1.

[0073] A welding robot provided by the present application includes a multi-spot welding mechanism. The welding parts 2 provided by the multi-spot welding mechanism in the welding robot of the present application can perform welding operations on multiple welding points at the same time. In actual operation, only one welding robot and one mechanism need to be deployed to realize welding of multiple points, and there is no need to switch the welding gun. Compared with the robot with an independent installation of electric welding guns provided by the prior art, or compared with the robot with a switching electric welding gun provided by the prior art for welding operations, the equipment cost is greatly saved and the welding work efficiency is improved. At the same time, when the workpiece needs to be welded, it is placed in the welding space 22 formed between the two welding guns, and the two surfaces of the workpiece can be welded at the same time, which further improves the efficiency of the welding operation of the welding robot. Through the application of the utility model, the problem that the spot welding gun in the prior art is independently installed on the robot, so more robots need to be deployed when handling the same welding workload, which greatly increases the equipment cost, and when a single robot is connected to multiple spot welding guns for switching operations, it can only ensure that one switching operation corresponds to one welding point for welding, and the welding efficiency is low.

[0074] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.

Claims

1. A multi-spot welding mechanism, characterized in that: include: Support portion (1); A plurality of welding parts (2), wherein the plurality of welding parts (2) are arranged at intervals on the support part (1), a first end of each welding part (2) is connected to two welding guns which are arranged at intervals and opposite to each other, a welding space (22) is formed between the two welding guns, and at least one welding gun is rotatably connected to the welding part (2); A first driving part (3), the first driving part (3) is arranged on the welding part (2) and connected to at least one of the welding guns; The first driving part (3) drives the welding gun to rotate relative to the first end of the welding part (2), so that the two welding guns are moved closer to or farther away from the welding space (22).

2. The multi-spot welding mechanism according to claim 1, characterized in that: A plurality of welding portions (2) are arranged horizontally at intervals on the supporting portion (1).

3. The multi-spot welding mechanism according to claim 2, characterized in that: The second end of at least one of the welding parts (2) is slidably connected to the supporting part (1); The second driving part (4) is arranged on the supporting part (1) and is connected to the second end of at least one of the welding parts (2).

4. The multi-spot welding mechanism according to claim 3, characterized in that: The welding portion (2) comprises a first welding portion (23) and a second welding portion (24); the first welding portion (23) and the second welding portion (24) are arranged horizontally and spaced apart on the support portion (1); the second end of the first welding portion (23) is fixedly connected to the support portion (1), and the second end of the second welding portion (24) is slidably connected to the support portion (1); The support portion (1) is provided with a slide rail (11); A sliding block (241) is provided at the second end of the second welding portion (24), and the sliding block (241) is slidably connected to the slide rail (11) and is connected to the second driving portion (4).

5. The multi-spot welding mechanism according to claim 3, characterized in that: Also includes: a rotating seat, the rotating seat being arranged corresponding to the welding portion (2), the first end of the rotating seat being rotatably connected to the second end of the welding portion (2); The second end of at least one of the rotating seats is slidably connected to the supporting portion (1).

6. The multi-spot welding mechanism according to any one of claims 1 to 5, characterized in that: The welding gun is in a bent shape, comprising a vertical first rod segment (211) and a horizontal second rod segment (212), the two first rod segments (211) of the two welding guns are arranged in parallel, the two second rod segments (212) of the two welding guns are spaced apart and arranged opposite to each other, and the welding space (22) is formed between the two second rod segments (212); Wherein, the first end of the first rod segment (211) is connected to the welding portion (2), the second end of the first rod segment (211) is connected to the first end of the second rod segment (212), and the second end of the second rod segment (212) is a welding end used for welding.

7. The multi-spot welding mechanism according to claim 6, characterized in that: The first rod section (211) comprises a first shaft and a second shaft; The first end of the first shaft rod is connected to the welding portion (2), the second end of the second shaft rod is connected to the second rod segment (212), the second end of the first shaft rod is provided with a first inner cavity, and the first end of the second shaft rod is at least partially connected to the side wall of the first inner cavity in a telescopic manner.

8. The multi-spot welding mechanism according to claim 6, characterized in that: The second rod section (212) includes a third shaft rod and a fourth shaft rod; The first end of the third shaft is connected to the first rod segment (211), the second end of the third shaft is provided with a second inner cavity, the first end of the fourth shaft is telescopically connected to the side wall of the second inner cavity, and the second end of the fourth shaft is the welding end; A side of the second inner cavity away from the fourth shaft rod is a cavity bottom, and an internal compression spring is arranged between the cavity bottom and the first end of the fourth shaft rod.

9. The multi-spot welding mechanism according to any one of claims 1 to 5, characterized in that: The two welding guns connected to the first end of each welding portion (2) include a fixed welding gun (213) and a rotating welding gun (214), wherein the fixed welding gun (213) is fixedly connected to the welding portion (2), and the rotating welding gun (214) is rotatably connected to the welding portion (2); The welding portion (2) comprises a first frame (25), the fixed welding gun (213) is fixedly connected to the first frame (25), and the rotating welding gun (214) comprises a second frame (2141), the second frame (2141) is rotatably connected to the first frame (25) and is at least partially embedded in the first frame (25); The first driving part (3) comprises a cylinder (31) and a cylinder push rod (32); the cylinder (31) is arranged on the first frame (25); one end of the cylinder push rod (32) is connected to the cylinder (31), and the other end is connected to the second frame (2141).

10. A welding robot, characterized in that: include: Robot body; The multi-spot welding mechanism according to any one of claims 1 to 9; The robot body is connected to the support part (1) of the multi-spot welding mechanism.

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