Automatic welding device for net rack
By designing an automatic welding device for space frames, and utilizing the limiting design of placement plates, inserts, and protruding columns, the problems of uneven welds and butt joint deviations during the welding process were solved, achieving efficient and precise welding operations and improving the welding quality and efficiency of space frames.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI LITING STEEL STRUCTURE ENGINEERING CO LTD
- Filing Date
- 2026-04-09
- Publication Date
- 2026-05-19
AI Technical Summary
Existing space frame welding equipment suffers from quality problems such as uneven welds, butt joint deviations, and discontinuous welds during the welding process. Furthermore, traditional positioning and limiting tooling has poor adaptability and cumbersome disassembly and assembly processes, which affect welding efficiency.
An automatic welding device for space frames was designed. Through the precise fit between the placement plate and the welding ball head, the cooperation between the insertion rod and the fixing rod, and the limiting design of the protruding column, the welding ball head is ensured to rotate within the preset trajectory to avoid deviation. Combined with the buffering effect of the spring and the connecting block, convenient welding operation is achieved.
It improves the forming quality of the welded space frame, reduces welding defects, lowers the difficulty of operation, increases welding efficiency, and ensures welding accuracy and smoothness.
Smart Images
Figure CN122058081A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of welding processing technology, specifically to an automatic welding device for space frames. Background Technology
[0002] Automatic welding equipment for space frames is a specialized automated equipment for the production of steel space frames. It mainly performs standardized welding operations on core connection parts such as space frame members and cones, end plates, and bolt ball joints. It can adapt to the welding needs of space frame members of different specifications, such as straight members and diagonal members. It can accurately complete key processes such as butt welding of the two ends of members to the connectors and intersecting line welding of ball joints to multiple members. It is a core piece of equipment to solve problems such as the large number of welding parts in space frames, the high precision requirements of butt welding, and the uneven weld seams that are easy to occur in manual welding. It is widely used in the batch processing of building space frame members.
[0003] Patent application CN202510694268.8 discloses a welding device for ball joints of a space frame structure, including a welding table. An arc-shaped positioning groove for placing ball joints is provided through the upper end of the welding table. The ball joints can rotate laterally and longitudinally within the arc-shaped positioning groove to adjust the welding point position. A side plate is fixedly provided on one side of the welding table. An clearance opening is provided through the side plate. An angle adjustment clamping mechanism is provided on the side plate. The angle adjustment clamping mechanism includes a bearing plate. Clamping arc plates are rotatably installed on both sides of the bearing plate. The clamping arc plates are used to clamp and fix the rods. One end of the bottom of the bearing plate is rotatably engaged with a movable plate.
[0004] In the welding process of the lower chord ball joint, due to the special connection structure at the joint and the strict requirements for welding alignment, manual operation is not only difficult to accurately control the welding position and angle, but also prone to quality problems such as uneven weld formation, butt joint deviation, and discontinuous weld. In addition, traditional positioning and limiting tooling has poor adaptability and the disassembly and assembly process is cumbersome and complicated. Changing to tooling adapted to different specifications of lower chord ball joints is time-consuming and laborious. Frequent tooling adjustments will also increase auxiliary operation time, which greatly restricts the progress of the overall welding process and leads to low work efficiency. Therefore, we propose an automatic welding device for space frame. Summary of the Invention
[0005] In view of the shortcomings of the prior art, the present invention provides an automatic welding device for space frames to solve the problems mentioned in the background art.
[0006] To achieve the above objectives, the present invention provides the following technical solution: an automatic welding device for a space frame, comprising a base, a connecting column, an adjusting component, and a welding component. The bottom of the connecting column is fixedly connected to the top of the base. The adjusting component is sleeved on the outer surface of the connecting column. The welding component is fixedly connected to the end of the adjusting component away from the connecting column. The adjusting component is driven to move vertically via the connecting column. The device also includes a connecting frame. The connecting frame is fixedly connected to the outer surface of the connecting column. The connecting frame is Y-shaped. A placement groove is provided at the fork of the connecting frame. A welded ball head is provided inside the placement groove. An arc-shaped rod and a connecting rod are provided at the top of the connecting frame. The inner wall of the placement groove is fixedly connected with a placement plate one and a placement plate two. The placement plate one and the placement plate two are adapted to and in contact with the outer surface of the welding ball head. The placement plate one and the placement plate two are the same size and shape and protrude from the surface of the connecting frame. There is a gap between the placement plate one and the placement plate two so as not to affect the rotation of the welding ball head.
[0007] Preferably, a first protrusion is fixedly connected to the top of the connecting frame, and two second protrusions are fixedly connected to the inner wall of the placement groove.
[0008] Preferably, a fixed rod is movably inserted inside the arc-shaped rod, and the end of the fixed rod away from the arc-shaped rod is fixedly connected to the surface of the connecting frame. A plug rod is movably inserted at the top of the fixed rod, and the top of the fixed rod is in contact with the surface of the arc-shaped rod to avoid affecting the rotation of the welding ball head.
[0009] Preferably, two sets of support plates are fixedly connected to the outer surface of the fixed rod, and the tops of the two sets of support plates are in contact with the outer surface of the arc-shaped rod to support the arc-shaped rod.
[0010] Preferably, the outer surface of the arc-shaped rod has an insertion hole, and the protruding post passes through the insertion hole and contacts the inner wall of the insertion hole. The protruding post is used to assist in limiting the arc-shaped rod.
[0011] Preferably, a spring is fixedly connected to the outer surface of the arc-shaped rod, and a connecting block is fixedly connected to the end of the spring away from the arc-shaped rod. A slot is opened on the surface of the connecting block, and a rotating rod is rotatably connected inside the slot. The rotating rod protrudes from the connecting block, and the top of the connecting block is arc-shaped.
[0012] Preferably, the connecting rod is disposed on the top of the connecting frame, and a limiting rod is movably inserted into the bottom of the connecting rod. The limiting rod has two openings on its surface, and the two protruding posts pass through the two openings respectively, and are fixedly connected to the limiting rod through the openings.
[0013] Preferably, the connecting rod is in contact with the surface of the arc-shaped rod, and a second limiting rod is fixedly connected to the outer surface of the connecting rod. The second limiting rod is arranged parallel to the first limiting rod, and the second limiting rod cooperates with the first limiting rod to limit the welding ball head.
[0014] Compared with the prior art, the present invention provides an automatic welding device for space frames, which has the following advantages: 1. This invention achieves precise fit between placement plate one and placement plate two and the outer surface of the welding ball head. The reserved gap ensures the normal rotation of the welding ball head while preventing its deviation. The cooperation between the insertion rod and the fixing rod, the auxiliary limiting of the protruding post one, and the scraping assistance of the connecting block further fix the position of the welding ball head, preventing it from shifting during the welding process. This keeps the welding ball head within the preset trajectory, avoiding welding deviations caused by the displacement of the welding ball head, ensuring accurate welding position, significantly improving the forming quality of the welded space frame, and reducing welding defects.
[0015] 2. This invention eliminates the need for complex tools when installing the arc-shaped rod. It allows for quick and easy fixing via the insertion hole and the engagement of the protruding post. The limiting design of the insertion rod and the fixing rod further facilitates the installation and disassembly of the arc-shaped rod. The placement of the welding ball head, combined with the support of placement plates one and two, allows for flexible rotation of the welding ball head without additional adjustments or repeated disassembly and adjustment. The entire operation process is streamlined, reducing the difficulty for operators and minimizing preparation time. Furthermore, the scraping function of the connecting block further enhances the smoothness of operation.
[0016] 3. This invention, through the structural design of the connecting frame, can both be fixed to the connecting column and provide placement space for the welding ball head; the adaptive design of placement plate one and placement plate two perfectly fits the outer surface of the welding ball head, ensuring tight contact without affecting the normal rotation of the welding ball head; the limiting function of protruding column one and protruding column two prevents component misalignment and jamming, reducing frictional wear between components. For example, the shape of the placement groove is adapted to the welding ball head, and the position of the connecting block and the arc-shaped rod are adapted, reducing the failure rate.
[0017] 4. The present invention provides support and positioning for the welding ball head by setting placement plate one and placement plate two protruding from the surface of the connecting frame; the arc design of the connecting block and the buffering effect of the spring can not only avoid damage to the components by collision, but also adapt to welding requirements at different angles; the elastic effect of the spring can automatically adjust according to the rotation angle of the welding ball head to ensure that it is always in close contact with the welding ball head, further improving the positioning accuracy. Attached Figure Description
[0018] Figure 1 This is a schematic diagram of the structure of the present invention. Figure 1 ; Figure 2 This is a schematic diagram of the structure of the present invention. Figure 2 ; Figure 3 This is a schematic diagram of the connecting frame of the present invention. Figure 1 ; Figure 4 This is a schematic diagram of the connecting frame of the present invention. Figure 2 ; Figure 5This is a perspective view of the connecting frame of the present invention; Figure 6 This is a schematic diagram of the arc-shaped rod of the present invention. Figure 1 ; Figure 7 This is a schematic diagram of the arc-shaped rod of the present invention. Figure 2 ; Figure 8 For the present invention Figure 7 Enlarged diagram of A in the middle; Figure 9 This is a schematic diagram of the connecting rod of the present invention.
[0019] In the diagram: 1. Base; 2. Connecting column; 3. Adjustment component; 4. Welding component; 5. Connecting frame; 501. Placement slot; 502. Placement plate one; 503. Placement plate two; 504. Protruding column one; 505. Protruding column two; 51. Welding ball head; 52. Arc rod; 521. Fixing rod; 522. Insert rod; 523. Support plate; 524. Connecting block; 5241. Slot; 5242. Rotating rod; 5243. Spring; 525. Insertion hole; 53. Connecting rod; 531. Limiting rod one; 532. Opening; 533. Limiting rod two. Detailed Implementation
[0020] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0021] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the invention, and should not be construed as limiting the invention.
[0022] In this invention, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.
[0023] Example 1, please refer to Figure 1-8The present invention provides a technical solution: an automatic welding device for a space frame, comprising a base 1, a connecting column 2, an adjusting component 3, and a welding component 4. The bottom of the connecting column 2 is fixedly connected to the top of the base 1. The adjusting component 3 is sleeved on the outer surface of the connecting column 2. The welding component 4 is fixedly connected to the end of the adjusting component 3 away from the connecting column 2. The adjusting component 3 is driven to move vertically through the connecting column 2. The device also includes a connecting frame 5: the connecting frame 5 is fixedly connected to the outer surface of the connecting column 2. The connecting frame 5 is Y-shaped. A placement groove 501 is provided at the fork of the connecting frame 5. A welding ball head 51 is provided inside the placement groove 501. An arc-shaped rod 52 and a connecting rod 53 are provided on the top of the connecting frame 5. When welding the lower chord ball joints of a space frame, the rationality of the fixing method must be carefully considered. A cumbersome and complex fixing method can negatively impact the overall welding operation. Firstly, the tedious fixing process consumes a significant amount of time and requires additional fixing components. These components directly obstruct other welding areas around the lower chord ball joint, preventing operators from welding surrounding points normally. Repeated disassembly and adjustment of fixing components are necessary to continue construction, severely affecting the continuity and smoothness of the welding operation. Secondly, a cumbersome fixing method hinders the subsequent welding of other ball joints. The installation and disassembly of fixing components not only increases the manual workload but may also cause the already welded lower chord ball joint to shift or damage the equipment's limiting structure due to improper operation during disassembly. This hinders the precise positioning and welding of subsequent ball joints, reducing overall welding efficiency, affecting the stability of welding quality, and increasing the probability of rework.
[0024] The inner wall of the placement groove 501 is fixedly connected to a placement plate 502 and a placement plate 503. The placement plates 502 and 503 are adapted to and in contact with the outer surface of the welding ball head 51. The placement plates 502 and 503 are the same size and shape and protrude from the surface of the connecting frame 5. There is a gap between the placement plates 502 and 503 to avoid affecting the rotation of the welding ball head 51. A protruding post 504 is fixedly connected to the top of the connecting frame 5, and two protruding posts 505 are fixedly connected to the inner wall of the placement groove 501. A fixing rod 521 is movably inserted into the arc-shaped rod 52. The end of the fixing rod 521 away from the arc-shaped rod 52 is fixedly connected to the surface of the connecting frame 5. An insert rod 522 is movably inserted into the top of the fixing rod 521. The top of the fixing rod 521 fits against the surface of the arc-shaped rod 52 to avoid affecting the rotation of the welding ball head 51. Two sets of support plates 523 are fixedly connected to the outer surface of the fixed rod 521. The tops of both sets of support plates 523 are in contact with the outer surface of the arc-shaped rod 52 to support the arc-shaped rod 52. An insertion hole 525 is provided on the outer surface of the arc-shaped rod 52. A protruding post 504 penetrates the insertion hole 525 and contacts the inner wall of the insertion hole 525. The protruding post 504 is used to assist in limiting the arc-shaped rod 52. Before the welding operation begins, the operator first places the welding ball head 51 between the placement plate 502 and the second placement plate 503 of the connecting frame 5, and adjusts the position of the welding ball head 51 so that its outer surface is fully in contact with the placement plate 502 and the second placement plate 503. The placement plate 502 and the second placement plate 503 are the same size and shape and protrude from the surface of the connecting frame 5. A reasonable gap is reserved between them to ensure that the welding ball head 51 can rotate flexibly without shifting, providing a basis for subsequent welding accuracy. After the welding ball head 51 is placed in place, the operator controls the welding component 4 to move vertically along the connecting column 2 through the adjustment component 3, and adjusts the welding component 4 to a suitable welding height and position. After the adjustment is completed, the equipment can be started to weld the space frame.
[0025] Before placing the welding ball head 51 into the placement plate 502 and placement plate 503, the arc-shaped rod 52 must be installed and fixed. The operator aligns the arc-shaped rod 52 with the protrusion 504 fixed on the top of the connecting frame 5 through the insertion hole 525 on its outer surface, and inserts the protrusion 504 into the insertion hole 525, ensuring that the protrusion 504 is in close contact with the inner wall of the insertion hole 525. The protrusion 504 can play an auxiliary limiting role for the arc-shaped rod 52, preventing the arc-shaped rod 52 from shifting laterally. Simultaneously, the arc-shaped rod 52 is fitted onto the outer surface of the fixing rod 521, allowing the arc-shaped rod 52 and the fixing rod 521 to be movably inserted. The end of the fixing rod 521 away from the arc-shaped rod 52 is fixedly connected to the surface of the connecting frame 5, and the tops of the two sets of support plates 523 fixedly connected to the outer surface of the fixing rod 521 are in close contact with the outer surface of the arc-shaped rod 52, which can provide stable support for the arc-shaped rod 52 and prevent the arc-shaped rod 52 from shaking during the welding process. After the arc-shaped rod 52 is installed in place, insert the plug rod 522 into the top of the fixing rod 521 to complete the overall fixation of the arc-shaped rod 52.
[0026] During welding, the operator can rotate the welding ball head 51 clockwise to weld the connection between the space frame and the welding ball head 51. During this process, the pre-reserved gaps between the insertion rod 522 and the placement plates 502 and 503 effectively limit the rotation angle of the welding ball head 51, preventing excessive rotation or displacement, ensuring precise welding position, guaranteeing welding accuracy, and preventing welding deviations that could affect the stability of the space frame structure.
[0027] After the first welding point of the welding ball head 51 is completed, the operator only needs to pull out the plug rod 522 to release the limit on the arc rod 52, and then rotate the arc rod 52 along the arc trajectory to adjust the position of the welding ball head 51 so that the welding component 4 can be aligned with the second welding point of the welding ball head 51. After the adjustment is in place, the second welding operation can be carried out. The operation is convenient and efficient, effectively improving the efficiency of space frame welding, while ensuring that the welding accuracy of each welding point is consistent.
[0028] A spring 5243 is fixedly connected to the outer surface of the arc-shaped rod 52. A connecting block 524 is fixedly connected to the end of the spring 5243 away from the arc-shaped rod 52. A slot 5241 is formed on the surface of the connecting block 5244, and a rotating rod 5242 is rotatably connected inside the slot 5241. The rotating rod 5242 protrudes from the connecting block 524, and the top of the connecting block 524 is arc-shaped. When the operator presses the connecting block 524, the connecting block 524 deflects under the elastic action of the spring 5243 until the top of the connecting block 524 is in contact with the outer surface of the welding ball head 51. At this time, the rotating rod 5242 rotatably connected inside the slot 5241 on the surface of the connecting block 524 also contacts the surface of the welding ball head 51, cooperating with the insertion rod 522 to further limit the deflection angle of the welding ball head 51 and prevent the welding ball head 51 from shifting during the welding process. In addition, the friction between the rotating rod 5242 and the welding ball head 51 can be increased by rotating the rotating rod 5242, further ensuring welding accuracy and ensuring stable and efficient welding operations.
[0029] Example 2, based on Example 1, please refer to... Figure 9 This invention provides a technical solution: a connecting rod 53 is disposed on the top of a connecting frame 5, and a limiting rod 531 is movably inserted into the bottom of the connecting rod 53. Two openings 532 are formed on the surface of the limiting rod 531, and two protruding posts 505 pass through the two openings 532 respectively, and are fixedly connected to the limiting rod 531 through the openings 532. The connecting rod 53 contacts the surface of the arc-shaped rod 52, and a limiting rod 533 is fixedly connected to the outer surface of the connecting rod 53. The limiting rod 533 is parallel to the limiting rod 531, and the limiting rod 533 cooperates with the limiting rod 531 to limit the welding ball head 51. After welding the second welding point, the operator can rotate the limiting rod 531 clockwise by 90°, and then rotate it counterclockwise by 90° according to the direction of the arc-shaped rod 52 to adjust the position of the welding ball head 51, align it with the third welding point, and prepare to carry out the third welding operation. At this point, the connecting rod 53 is inserted into the limiting rod 531. The limiting rod 531 is fixedly connected to the protruding post 505 on the connecting frame 5 through the opening 532 on its surface, thus achieving a stable fixation between the limiting rod 531 and the connecting frame 5. After the connecting rod 53 is inserted into place, its surface is in close contact with the arc-shaped rod 52, preventing any shaking and achieving stable positioning of the connecting rod 53. When welding the adjusted welding ball head 51, the operator can start the welding operation by rotating the welding ball head 51 counterclockwise. During this process, the limiting rod 533 fixed on the outer surface of the connecting rod 53 cooperates with the limiting rod 531 to effectively limit the rotation angle and position of the welding ball head 51, further ensuring the welding accuracy of the third welding point. After the third welding point is completed, the operator can easily remove the connecting rod 53 from the limiting rod 531. The operation is simple and does not affect the welding operation of other welding points, further improving the overall welding efficiency.
[0030] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic welding device for a space frame, comprising a base (1), a connecting column (2), an adjusting component (3), and a welding component (4), wherein the bottom of the connecting column (2) is fixedly connected to the top of the base (1), the adjusting component (3) is sleeved on the outer surface of the connecting column (2), and the welding component (4) is fixedly connected to the end of the adjusting component (3) away from the connecting column (2), wherein the adjusting component (3) is driven to move vertically via the connecting column (2), characterized in that, It also includes the connecting frame (5): The connecting frame (5) is fixedly connected to the outer surface of the connecting column (2). The connecting frame (5) is Y-shaped. The connecting frame (5) has a placement groove (501) at the fork. The placement groove (501) is provided with a welding ball head (51). The top of the connecting frame (5) is provided with an arc rod (52) and a connecting rod (53). The inner wall of the placement groove (501) is fixedly connected with a placement plate one (502) and a placement plate two (503). The placement plate one (502) and the placement plate two (503) are adapted to and in contact with the outer surface of the welding ball head (51). The placement plate one (502) and the placement plate two (503) are the same size and shape and protrude from the surface of the connecting frame (5). There is a gap between the placement plate one (502) and the placement plate two (503) so as not to affect the rotation of the welding ball head (51).
2. The automatic welding device for space frames according to claim 1, characterized in that: The top of the connecting frame (5) is fixedly connected to a protruding post one (504), and the inner wall of the placement groove (501) is fixedly connected to two protruding posts two (505).
3. The automatic welding device for space frames according to claim 2, characterized in that: A fixed rod (521) is movably inserted inside the arc-shaped rod (52). The end of the fixed rod (521) away from the arc-shaped rod (52) is fixedly connected to the surface of the connecting frame (5). A plug rod (522) is movably inserted at the top of the fixed rod (521). The top of the fixed rod (521) is in contact with the surface of the arc-shaped rod (52) to avoid affecting the rotation of the welding ball head (51).
4. The automatic welding device for space frames according to claim 3, characterized in that: Two sets of support plates (523) are fixedly connected to the outer surface of the fixed rod (521). The tops of the two sets of support plates (523) are in contact with the outer surface of the arc rod (52) to support the arc rod (52).
5. The automatic welding device for space frames according to claim 4, characterized in that: The outer surface of the arc-shaped rod (52) is provided with a socket (525), and the first protrusion (504) penetrates the socket (525) and contacts the inner wall of the socket (525). The first protrusion (504) is used to assist in limiting the arc-shaped rod (52).
6. The automatic welding device for space frames according to claim 5, characterized in that: A spring (5243) is fixedly connected to the outer surface of the arc-shaped rod (52). A connecting block (524) is fixedly connected to one end of the spring (5243) away from the arc-shaped rod (52). A slot (5241) is provided on the surface of the connecting block (524). A rotating rod (5242) is rotatably connected inside the slot (5241). The rotating rod (5242) protrudes from the connecting block (524). The top of the connecting block (524) is arc-shaped.
7. The automatic welding device for space frames according to claim 6, characterized in that: The connecting rod (53) is located on the top of the connecting frame (5). The bottom of the connecting rod (53) is movably inserted into a limiting rod (531). The limiting rod (531) has two openings (532) on its surface. The two protruding pillars (505) pass through the two openings (532) respectively and are fixedly connected to the limiting rod (531) through the openings (532).
8. The automatic welding device for space frames according to claim 7, characterized in that: The connecting rod (53) is in contact with the surface of the arc rod (52). The outer surface of the connecting rod (53) is fixedly connected to the second limiting rod (533). The second limiting rod (533) is arranged parallel to the first limiting rod (531). The second limiting rod (533) and the first limiting rod (531) cooperate to limit the welding ball head (51).