A double-column large frame welding machine for processing three-wheel motorcycles
Patent Information
- Application Number
- CN202611055013.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2026-07-16
- Publication Date
- 2026-09-25
AI Technical Summary
[0003]本申请提出了一种三轮摩托车加工双柱式大架焊机，具备可有效保持工件端面的接触压力，确保焊接时的熔核不易向下发生流动，对于工件焊接质量较高的优点，用以解决现有的双柱式焊机对于工件端面施加的接触压力是相对固定的，进而在接触端面高温熔化并形成熔核的过程中，因工件端面的高温熔化，使其之间的接触压力会随之变小并产生间隙，致使熔核具有向下流动的趋势并导致上层焊缝变薄、而下层焊缝变厚，极大地影响了该双柱式焊机对于工件的焊接质量，并在承受较大程度的交变载荷时易发生断裂的问题
1、本申请提供的一种三轮摩托车加工双柱式大架焊机，对于驱动组件上的焊接组件通过弹性连杆弹性连接的设置，当两组焊接组件上所卡接的工件端面相互挤压接触时，持续移动驱动组件以带动两组焊接组件相互挤压而压缩弹性连杆，并在工件的接触端面因高温熔化而形成熔核时，在弹性连杆的弹力作用下，可迫使驱动组件及其上的另一组焊接组件向左侧发生移动以保持工件端面之间的接触压力，使其之间不会产生间隙并确保熔核不易向下发生流动，进而有效提高了该双柱式大架焊机对于工件的焊接质量，焊缝不会出现上层薄而下层厚的问题。
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Figure CN122807423A_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of welding equipment technology, and in particular to a double-column frame welding machine for processing three-wheeled motorcycles. Background Technology
[0002] A double-column welding machine is a general term for welding equipment that uses two columns for horizontal support. The design of the double-column structure can effectively ensure the coaxiality of the workpiece during welding. At the same time, based on the principle of resistance hot melt welding, the two electrodes apply stable pressure to the contact end face of the workpiece and generate controllable contact resistance. Then, during the process of current flow, a high-temperature melting contact area is generated on the contact end face and a weld nugget is formed to complete the high-quality welding of tubular parts. However, the contact pressure applied to the workpiece end face by the existing dual-column welding machine is relatively fixed. As the contact end face melts at high temperature and forms a weld nugget, the contact pressure between them decreases due to the high temperature melting of the workpiece end face, and gaps are generated. This causes the weld nugget to flow downward, resulting in the upper weld layer becoming thinner and the lower weld layer becoming thicker. This greatly affects the welding quality of the workpiece by the dual-column welding machine and makes it prone to breakage under a large degree of alternating load, posing a significant safety hazard and exhibiting poor stability and reliability. Summary of the Invention
[0003] This application proposes a dual-column frame welding machine for three-wheeled motorcycles, which effectively maintains the contact pressure on the workpiece end face, ensuring that the weld nugget does not easily flow downwards during welding, resulting in higher welding quality. This addresses the problem that existing dual-column welding machines apply a relatively fixed contact pressure to the workpiece end face, leading to a decrease in contact pressure and gaps during the high-temperature melting and formation of the weld nugget. This causes the weld nugget to flow downwards, resulting in a thinner upper weld and a thicker lower weld, which greatly affects the welding quality of the workpiece and makes it prone to breakage under large alternating loads.
[0004] To achieve the above objectives, this application adopts the following technical solution: a double-column frame welding machine for three-wheeled motorcycles, comprising a guide rail fixedly mounted on a support base by bolts, wherein a set of mounting straight grooves connecting to the top of the guide rail are respectively opened inside both sides of the guide rail, and a set of straight teeth are fixedly installed at the bottom of both sides of the guide rail, and a slot is opened at the outer end of both sides of the guide rail; a set of welding components for clamping and welding workpieces is fixedly installed on the left side of the guide rail, the welding components including a lower clamping plate and an upper clamping plate fixed together by bolts, the lower clamping plate and the upper clamping plate being electrically connected to a DC power supply system to form a welding current loop, thereby, while clamping the workpiece, DC power can be applied to the workpiece through the lower clamping plate and the upper clamping plate to generate a high-temperature melting contact area and form a weld nugget on its contact end face, and a drive component is slidably connected to the right side of the guide rail, and another set of welding components is slidably connected to the right side of the top of the drive component, and the drive component and the welding component are elastically connected by an elastic connecting rod fixedly installed on one side of the top of the drive component; When the workpiece end faces clamped on the two sets of welding components are pressed and contacted with each other, the continuously moving drive component drives the two sets of welding components to press against each other and compress the elastic connecting rod, so that it stores a certain amount of elastic potential energy. When the contact end face of the workpiece melts at high temperature and forms a molten nugget, under the elastic force of the elastic connecting rod, the drive component and the other set of welding components on it can be forced to move to the left to maintain the contact pressure between the end faces of the workpiece, so that no gap is generated between them and the molten nugget does not easily flow downward. This effectively improves the welding quality of the workpiece by the double column frame welding machine, and the weld will not have the phenomenon of thin upper layer and thick lower layer. It is also less likely to break under a large degree of alternating load.
[0005] Furthermore, the drive assembly includes a sliding frame movably sleeved on the side end of the guide rail. A linkage shaft is movably sleeved inside the sliding frame, and a drive wheel that meshes with a spur gear is provided on the outer surface of the linkage shaft and inside the sliding frame. Thus, during the left and right rotation of the linkage shaft, the sliding frame can be forced to move left and right along the trajectory of the guide rail under the meshing transmission of the drive wheel and the spur gear.
[0006] Furthermore, the drive wheel is movably sleeved on the outer surface of the linkage shaft, and the two ends of the drive wheel are provided with first inclined surfaces. At the same time, a set of snap-fit bushings are provided on the outer surface of the linkage shaft and on both sides of the drive wheel. The snap-fit bushings are provided with limiting strips inside to form a sliding sleeve with the linkage shaft, and are elastically connected to it through an elastic element that is movably sleeved on the outer surface of the linkage shaft. Under the elastic force of the elastic element, the two sets of snap-fit bushings tend to move towards each other to fix the drive wheel in the middle. The inner end of the snap-fit bushing is provided with a second inclined surface that cooperates with the first inclined surface. Initially, under the elastic force of the elastic element, the first inclined plane and the second inclined plane cooperate with each other to form a complete transmission component between the linkage shaft, the snap-fit bushing and the drive wheel, and can synchronously drive the drive wheel to rotate during the rotation of the linkage shaft. When the end faces of the workpieces are pressed and contacted, with the continuous rotation of the linkage shaft, the first and second inclined surfaces cooperate to force the snap-fit sleeve to move outward and compress the elastic element. This converts the rotational torque of the linkage shaft into the axial pressure of the snap-fit sleeve and applies it to the elastic element to effectively maintain the contact pressure between the end faces of the two workpieces. This prevents the contact end faces from becoming too narrow and the weld strength from deteriorating due to excessive pressure during the high-temperature melting and formation of the weld nugget.
[0007] Furthermore, a slider is movably sleeved in the middle of the outer surface of the linkage shaft and slidably connected inside the slot. Initially, under the elastic force of the elastic element, the inner end of the slider does not contact the outer end of the locking sleeve. However, as the locking sleeve moves outward and compresses the elastic element, the inner end of the slider can come into contact with the outer end of the locking sleeve, thereby increasing the rotational friction of the linkage shaft to prevent the drive wheel from rotating back, and effectively avoiding the problem of the sliding frame and its structure moving to the right under the elastic force of the elastic link.
[0008] Furthermore, the bottom end of the first inclined surface on both sides of the drive wheel is set as the first plane, and the top end of the second inclined surface on the snap-fit bushing is set as the second plane. Thus, when the first plane and the second plane come into contact, the influence of the inclined plane component force between the first inclined surface and the second inclined surface is offset by the plane contact, which further prevents the drive wheel from rotating and effectively improves the stability and reliability when the slider contacts the end face of the snap-fit bushing.
[0009] Furthermore, the height difference of the first inclined plane is greater than the initial distance between the left end of the snap-fit bushing and the right end of the slider, thereby ensuring that when the first plane and the second plane make extrusion contact, the snap-fit bushing can generate sufficient extrusion friction on the slider to prevent the drive wheel from rotating.
[0010] Furthermore, when the welding is completed and the locking state of the drive assembly needs to be released, the linkage shaft is reversed while the sliding frame is pressed, so that the first plane and the second plane are separated from each other. Under the elastic force of the elastic element, the snap-fit sleeve is forced to return to the initial position, causing the slider and the snap-fit sleeve to separate from each other. Then, during the continuous reversal of the linkage shaft, the drive assembly and its structure are driven back to the initial position by the meshing transmission between the drive wheel and the spur gear.
[0011] The beneficial effects of this invention are as follows: 1. This application provides a double-column frame welding machine for three-wheeled motorcycles. The welding components on the drive assembly are elastically connected via elastic connecting rods. When the workpiece end faces clamped on the two sets of welding components are pressed against each other, the drive assembly is continuously moved to cause the two sets of welding components to press against each other and compress the elastic connecting rods. When a weld nugget is formed on the contact end face of the workpiece due to high-temperature melting, the elastic force of the connecting rods forces the drive assembly and the other set of welding components on it to move to the left to maintain the contact pressure between the workpiece end faces, preventing gaps and ensuring the weld nugget does not easily flow downwards. This effectively improves the welding quality of the workpiece by the double-column frame welding machine, preventing the weld from having a thin upper layer and a thick lower layer.
[0012] 2. The double-column frame welding machine for three-wheeled motorcycles provided in this application, with the setting of the drive wheel and its linkage structure, when the end faces of the workpieces are pressed and contacted each other, with the continuous rotation of the linkage shaft, under the cooperation of the first inclined surface and the second inclined surface, can force the clamping bushing to move outward and compress the elastic element. In this way, the rotational torque of the linkage shaft can be converted into the axial pressure of the clamping bushing and applied to the elastic element to effectively maintain the contact pressure between the end faces of the two workpieces. This prevents the contact end faces from narrowing the weld and deteriorating the welding strength due to excessive pressure during the process of high-temperature melting and forming a weld nugget.
[0013] 3. The double-column frame welding machine for three-wheeled motorcycles provided in this application has a specific fit between the snap-fit bushing and the slider. As the snap-fit bushing moves outward and compresses the elastic element, the inner end of the slider can make extrusion contact with the outer end of the snap-fit bushing. The contact between the first and second planes cancels out the influence of the inclined plane component force between the first and second inclined planes, effectively increasing the rotational friction of the linkage shaft and preventing the drive wheel from rotating, which would otherwise reduce the contact pressure between the two workpiece end faces, increase the weld gap, and worsen the welding quality. Attached Figure Description
[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort: Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is a schematic diagram of the structure of the guide rail of the present invention; Figure 3 This is a schematic diagram of the structure of the driving component of the present invention; Figure 4This is a schematic diagram of the sliding frame of the present invention; Figure 5 This is a schematic diagram of the installation of the linkage shaft and its structure according to the present invention; Figure 6 This is a schematic diagram of the drive wheel structure of the present invention; Figure 7 This is a schematic diagram of the snap-fit bushing structure of the present invention.
[0015] In the diagram: 1-Guide rail, 2-Welding assembly, 3-Drive assembly, 4-Mounting straight groove, 5-Straight tooth, 6-Slot, 7-Sliding frame, 8-Lower clamping plate, 9-Elastic connecting rod, 10-Upper clamping plate, 11-Linkage shaft, 12-Slider, 13-Drive wheel, 14-First inclined surface, 15-Snap-fit bushing, 16-Elastic element, 17-Second inclined surface, 18-First plane, 19-Second plane, 20-Limiting clip. Detailed Implementation
[0016] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0017] like Figure 1 , Figure 2 As shown, a double-column frame welding machine for three-wheeled motorcycles includes a guide rail 1 fixedly mounted on a support base by bolts. A set of mounting grooves 4 extending to the top of each side of the guide rail 1 are respectively opened inside. A set of straight teeth 5 are fixedly installed at the bottom of each side of the guide rail 1. A slot 6 is opened at the outer end of each side of the guide rail 1. A welding assembly 2 for clamping and welding workpieces is fixedly installed on the left side of the guide rail 1. The welding assembly 2 includes a lower clamping plate 8 and an upper clamping plate 10 fixed together by bolts. The lower clamping plate 8 and the upper clamping plate 10 are electrically connected to a DC power supply system to form a welding current loop. While clamping the workpiece, DC power can be applied to the workpiece through the lower clamping plate 8 and the upper clamping plate 10 to generate a high-temperature melting contact area and form a weld nugget on its contact surface. A drive assembly 3 is slidably connected to the right side of the guide rail 1. Figure 3 As shown, another set of welding components 2 is slidably connected to the right side of the top of the drive component 3, and the drive component 3 and the welding components 2 are elastically connected by an elastic connecting rod 9 fixedly installed on one side of the top of the drive component 3. When the workpiece end faces clamped on the two sets of welding components 2 are pressed and contacted with each other, the continuously moving drive component 3 drives the two sets of welding components 2 to press and compress the elastic connecting rod 9, so that it stores a certain elastic potential energy. When the contact end face of the workpiece melts at high temperature and forms a molten nugget, under the elastic force of the elastic connecting rod 9, the drive component 3 and the other set of welding components 2 on it can be forced to move to the left to maintain the contact pressure between the end faces of the workpiece, so that no gap is generated between them and the molten nugget is not easy to flow downward. This effectively improves the welding quality of the workpiece by the double column frame welding machine, and the weld will not have the phenomenon of thin upper layer and thick lower layer. It is also less likely to break under a large degree of alternating load.
[0018] like Figure 1 , Figure 2 as well as Figure 4 As shown, in this technical solution, the drive assembly 3 includes a sliding frame 7 movably sleeved on the side end of the guide rail 1. A linkage shaft 11 is movably sleeved inside the sliding frame 7. A drive wheel 13 that meshes with the spur gear 5 is provided on the outer surface of the linkage shaft 11 and inside the sliding frame 7. Thus, during the left and right rotation of the linkage shaft 11, the sliding frame 7 can be forced to move left and right along the trajectory of the guide rail 1 under the meshing transmission of the drive wheel 13 and the spur gear 5.
[0019] like Figures 5-7 As shown, in this technical solution, the drive wheel 13 is movably sleeved on the outer surface of the linkage shaft 11, and the two ends of the drive wheel 13 are provided with first inclined surfaces 14. At the same time, a set of snap-fit bushings 15 are respectively provided on the outer surface of the linkage shaft 11 and on both sides of the drive wheel 13. The snap-fit bushings 15 are provided with limiting strips 20 inside, which form a sliding sleeve with the linkage shaft 11, and are elastically connected to it through elastic members 16 movably sleeved on the outer surface of the linkage shaft 11. Under the elastic force of the elastic members 16, the two sets of snap-fit bushings 15 have a tendency to move towards each other to fix the drive wheel 13 in the middle. The inner end of the snap-fit bushings 15 is provided with a second inclined surface 17 that cooperates with the first inclined surface 14. Initially, under the elastic force of the elastic element 16, the first inclined surface 14 and the second inclined surface 17 cooperate with each other to form a complete transmission component between the linkage shaft 11, the snap-fit bushing 15 and the drive wheel 13, and can synchronously drive the drive wheel 13 to rotate during the rotation of the linkage shaft 11. When the end faces of the workpieces are pressed and contacted, with the continuous rotation of the linkage shaft 11, the first inclined surface 14 and the second inclined surface 17 can force the snap-fit sleeve 15 to move outward and compress the elastic element 16. In this way, the rotational torque of the linkage shaft 11 can be converted into the axial pressure of the snap-fit sleeve 15 and applied to the elastic element 16 to effectively maintain the contact pressure between the end faces of the two workpieces. This prevents the weld from becoming narrower and the welding strength from deteriorating due to excessive pressure during the process of high-temperature melting and forming a weld nugget.
[0020] like Figure 2 , Figure 3 as well as Figure 5 As shown, in this technical solution, a slider 12 is movably sleeved in the middle of the outer surface of the linkage shaft 11 and slidably connected in the slot 6. Initially, under the elastic force of the elastic element 16, the inner end of the slider 12 does not contact the outer end of the snap-fit sleeve 15. However, as the snap-fit sleeve 15 moves outward and compresses the elastic element 16, the inner end of the slider 12 can come into contact with the outer end of the snap-fit sleeve 15, thereby increasing the rotational friction of the linkage shaft 11 to prevent the drive wheel 13 from rotating, and effectively avoiding the problem of the sliding frame 7 and its structure moving to the right under the elastic force of the elastic link 9.
[0021] like Figure 6 , Figure 7 As shown, in this technical solution, the bottom end of the first inclined surface 14 on both sides of the drive wheel 13 is set as the first plane 18, and the top end of the second inclined surface 17 on the snap-fit bushing 15 is set as the second plane 19. When the first plane 18 and the second plane 19 come into contact, the influence of the inclined plane component force between the first inclined surface 14 and the second inclined surface 17 is offset by the plane contact, which further prevents the drive wheel 13 from rotating and effectively improves the stability and reliability when the slider 12 contacts the end face of the snap-fit bushing 15.
[0022] like Figures 5-7 As shown, in this technical solution, the height difference of the first inclined plane 14 is greater than the initial distance between the left end of the snap-fit sleeve 15 and the right end of the slider 12, thereby ensuring that when the first plane 18 and the second plane 19 make extrusion contact, the snap-fit sleeve 15 can generate sufficient extrusion friction on the slider 12 to prevent the drive wheel 13 from rotating.
[0023] In this technical solution, when the welding is completed and the locking state of the drive assembly 3 needs to be released, the linkage shaft 11 is reversed while the sliding frame 7 is pressed, so that the first plane 18 and the second plane 19 are separated from each other. Under the elastic force of the elastic element 16, the snap-fit sleeve 15 is forced to return to the initial position, causing the slider 12 and the snap-fit sleeve 15 to separate from each other. Then, during the continuous reverse rotation of the linkage shaft 11, under the meshing transmission between the drive wheel 13 and the spur tooth 5, the drive assembly 3 and its structure are driven to return to the initial position.
[0024] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims
1. A welding machine for processing three-wheeled motorcycles with a double-column frame, comprising a guide rail (1), characterized in that: The guide slide rail (1) has a set of mounting grooves (4) that connect to its top on both sides. A set of straight teeth (5) are fixedly installed at the bottom of the guide slide rail (1) on both sides. At the same time, a slot (6) is opened at the outer end of the guide slide rail (1) on both sides. A set of welding components (2) is fixedly installed on the left side of the guide slide rail (1). The welding components (2) include a lower clamping plate (8) and an upper clamping plate (10) that are fixed together by bolts. A drive component (3) is slidably connected to the right side of the guide slide rail (1). Another set of welding components (2) is slidably connected to the right side of the top of the drive component (3). The drive component (3) and the welding component (2) are elastically connected by an elastic connecting rod (9) fixedly installed on one side of the top of the drive component (3).
2. The welding machine for a double-column frame in the processing of three-wheeled motorcycles according to claim 1, characterized in that, The drive assembly (3) includes a sliding frame (7) movably sleeved on the side end of the guide rail (1), a linkage shaft (11) movably sleeved inside the sliding frame (7), and a drive wheel (13) meshing with a spur gear (5) is provided on the outer surface of the linkage shaft (11) and inside the sliding frame (7).
3. The welding machine for a double-column frame in the processing of three-wheeled motorcycles according to claim 2, characterized in that, The drive wheel (13) is movably sleeved on the outer surface of the linkage shaft (11), and the two ends of the drive wheel (13) are provided with a first inclined surface (14). At the same time, a set of snap-fit bushings (15) are provided on the outer surface of the linkage shaft (11) and on both sides of the drive wheel (13). The snap-fit bushing (15) is provided with a limiting strip (20) inside, which forms a sliding sleeve with the linkage shaft (11), and forms an elastic connection with it through an elastic element (16) movably sleeved on the outer surface of the linkage shaft (11). The inner end of the snap-fit bushing (15) is provided with a second inclined surface (17) that cooperates with the first inclined surface (14).
4. The welding machine for a double-column frame in the processing of three-wheeled motorcycles according to claim 3, characterized in that, The middle part of the outer surface of the linkage shaft (11) is movably sleeved with a slider (12) that is slidably connected inside the slot (6). Initially, under the elastic force of the elastic element (16), the inner end of the slider (12) does not contact the outer end of the clamping sleeve (15).
5. The welding machine for a double-column frame in the processing of three-wheeled motorcycles according to claim 4, characterized in that, The bottom end of the first inclined surface (14) on both sides of the drive wheel (13) is set as the first plane (18), and the top end of the second inclined surface (17) on the snap-fit bushing (15) is set as the second plane (19). When the first plane (18) and the second plane (19) come into contact, the influence of the inclined plane component force between the first inclined surface (14) and the second inclined surface (17) is offset by the plane contact.
6. The double-column frame welding machine for three-wheeled motorcycle processing according to claim 3, characterized in that, The height difference of the first inclined plane (14) is greater than the initial distance between the left end of the snap-fit sleeve (15) and the right end of the slider (12).
7. The welding machine for a double-column frame in the processing of three-wheeled motorcycles according to claim 5, characterized in that, When the welding is completed and the locking state of the drive assembly (3) needs to be released, while pressing the sliding frame (7), the linkage shaft (11) is reversed, so that the first plane (18) and the second plane (19) are separated from each other. Under the elastic force of the elastic element (16), the snap-fit sleeve (15) is forced to return to the initial position, causing the slider (12) and the snap-fit sleeve (15) to separate from each other. Then, during the continuous reverse rotation of the linkage shaft (11), under the meshing transmission between the drive wheel (13) and the spur tooth (5), the drive assembly (3) and its structure are driven back to the initial position.