Automatic nut welding device for guide rail support

Abstract

The invention discloses an automatic nut welding device for a guide rail support. The automatic nut welding device comprises a workbench, a feeding system, a positioning mechanism, a centering rotating mechanism and a welding device. A welding station and a feeding station are arranged on the workbench in a spaced mode. The feeding system is installed on the side portion of the workbench and used for conveying the guide rail supports to be welded to the feeding station and pushing the guide rail supports to the welding station one by one. The positioning mechanism is arranged on the side portion of the welding station and used for positioning the support in the welding process. The centering rotating mechanism is arranged on the upper portion of the welding station, and the welding device is arranged on the side portion of the welding station. The automatic welding device has the beneficial effects that automatic feeding of the supports and the nuts is achieved through the feeding system, meanwhile, the nuts are aligned with penetrating holes of the supports through the centering rotating mechanism, and therefore the nuts can be accurately welded through the welding device. Compared with a traditional mode, the full-automatic welding process of the guide rail support can be achieved, and therefore the welding efficiency and the welding quality of the guide rail support are effectively improved.

Description

Technical Field

[0001] The present application relates to the technical field of automobile parts processing, and in particular to an automatic nut welding device for a guide rail bracket. Background Art

[0002] like Figure 1 and Figure 2 Figure 1 shows the structure of a conventional automotive guide rail bracket. Guide rail bracket 100 primarily comprises a bracket 110 and a nut 120. Bracket 110 is L-shaped, with one side of bracket 110 serving as a mounting portion 111. Flanged flanges 113 are provided on either side of mounting portion 111, and a through-hole 112 is provided in the center of mounting portion 111. Nut 120 is a custom-made weld nut with protruding welds 122 at the four corners of one end and an unthreaded center hole 121 in the center.

[0003] In order to ensure the installation accuracy of the guide rail bracket, when producing the guide rail bracket, it is often necessary to first spot-weld the nut 120 to the mounting portion 111 of the bracket 110 through the welding portions 122 at the four corners so that the center hole 121 of the nut 120 is aligned with the through-hole 112. Then, the center hole 121 of the nut 120 is tapped using the mounting portion 111 of the bracket 110 as a reference. This ensures that the bolt can be smoothly screwed into the nut 120 when the guide rail bracket is installed. For the spot welding connection between the bracket 110 and the nut 120, the existing technology often uses manual welding or semi-automatic welding, which not only affects the welding quality of the guide rail bracket, but also affects the production efficiency of the guide rail bracket. Summary of the Invention

[0004] One of the purposes of the present application is to provide a guide rail bracket automatic nut welding device that can solve at least one of the defects in the above-mentioned background technology.

[0005] In order to achieve at least one of the above-mentioned purposes, the technical solution adopted in the present application is: an automatic nut welding device for a guide rail bracket, comprising a workbench, a feeding system, a positioning mechanism, a centering rotation mechanism and a welding device; welding stations and feeding stations are arranged at intervals on the workbench; the feeding system is installed on the side of the workbench to transport the guide rail bracket to be welded to the feeding station and push it to the welding station one by one; the positioning mechanism is arranged on the side of the welding station to position the bracket during the welding process; the centering rotation mechanism is arranged on the side of the welding station to position the bracket The welding device is arranged on the upper part of the welding station, and the welding process includes a first process and a second process; wherein, in the first process: the centering rotation mechanism drives the nut in the guide rail bracket to be welded to be aligned with the through-hole of the bracket, and at this time the welding device welds the two welding parts of the side wall of the nut parallel to the upper flange of the bracket; in the second process: the centering rotation mechanism maintains the alignment of the nut and the through-hole and drives the guide rail bracket to rotate 180° by driving the nut, and then the welding device welds the remaining two welding parts of the nut in the guide rail bracket.

[0006] Preferably, the centering rotation mechanism includes a fourth telescopic device, a second rotating device and a retraction assembly; the fourth telescopic device is fixedly arranged and connected to the second rotating device through an output end, the retraction assembly is installed at the output end of the second rotating device, and the fourth telescopic device is suitable for driving the retraction assembly to move axially; the end of the retraction assembly forms a retraction opening for centering and clamping the nut, and the center of the retraction opening is aligned with the through-hole on the bracket; when performing the first process, the nut falls into the retraction opening whose opening size is larger than the cross-sectional size of the nut, and then the retraction assembly is driven by the second rotating device to retract and drive the nut to align with the through-hole; when performing the second process, the retraction assembly keeps the nut retracted and drives the guide rail bracket to rotate 180° under the drive of the second rotating device.

[0007] Preferably, the second rotating device is installed on the output end of the fourth telescopic device through a connecting frame; the retraction assembly includes a traction plate, a guide plate and four retraction blocks; the four retraction blocks are arranged around to form the retraction opening, the connecting frame extends to the output end of the second rotating device and cooperates with the guide plate through a clutch structure; the retraction block cooperates with the guide plate through a guide structure, the traction plate is connected to the output end of the second rotating device and cooperates with the retraction block through a traction structure; when performing the first process, the traction plate rotates under the drive of the second rotating device, at which time the guide plate remains stationary under the restriction of the clutch structure, and then the retraction block is gradually retracted by the traction structure and the guide structure until the cross-section of the retraction opening is a square corresponding to the cross-sectional size of the nut; when performing the second process, the retraction block maintains the retraction clamping of the nut, at which time the traction plate drives the guide plate to break away from the restriction of the clutch structure and rotate 180 degrees synchronously under the drive of the second rotating device.

[0008] Preferably, the upper end of the retracting block is provided with a radially extending traction seat, the upper end surface of the traction seat is provided with a guide pin with a circular cross-section, and the lower end surface of the traction seat is provided with a traction block with a rectangular cross-section; the guide plate is provided above the traction seat, and the guide plate is provided with four guide grooves distributed equidistantly along the circumference, and the guide grooves cooperate with the corresponding guide pins to form the guide structure; the traction plate is provided below the traction seat, and the traction seat is provided with four traction grooves distributed equidistantly along the circumference, and the traction grooves cooperate with the corresponding traction blocks to form the traction structure; wherein, the traction groove is not parallel to the extension direction of the guide groove.

[0009] Preferably, the connecting frame is provided with a support seat at the output end of the second rotating device, and the support seat is located above the guide plate; the clutch structure includes a clutch block, a second spring and a clutch slot; the clutch block is elastically slidably installed along the axial direction of the guide plate by the second spring, and the clutch slot is provided on the support seat; when the clutch block cooperates with the clutch slot under the elastic force of the second spring, the guide plate is restricted; when the clutch block passes over the clutch slot under the drive of the traction plate, the restriction of the guide plate is released.

[0010] Preferably, the support seat and the guide plate are matched with each other through a plurality of clutch structures arranged along the circumferential direction, and the setting position of each clutch structure is at a different distance from the center of the guide plate; there are two clutch slots corresponding to the clutch structure, and the two clutch slots are arranged 180° apart in the circumferential direction of the support seat; when the welding process is carried out, the traction plate always rotates along the first direction; wherein, when the first process is carried out, the clutch block cooperates with one of the clutch slots, and when the second process is carried out, the clutch block rotates 180° along the first direction with the guide plate and then cooperates with the other clutch slot; after completing the welding process, the traction plate rotates along the second direction opposite to the first direction, so that the retracting block gradually opens from the retracted state, and at this time, the guide plate remains stationary under the action of the clutch structure.

[0011] Preferably, the folding assembly also includes a pressure block located in the folding mouth, and the pressure block is axially elastically slidably installed on the guide plate; the pressure block is suitable for applying pressure to the nut against the bracket during the welding process; an electromagnet is also provided in the pressure block, and the electromagnet is suitable for adsorbing the nut to the center of the folding mouth by the magnetic force generated by power before the first process; the electromagnet is suitable for keeping the power off during the welding process.

[0012] Preferably, the loading station is formed by a first limit plate and a second limit plate arranged in parallel on the workbench, and the extension direction of the loading station is toward the welding station; the loading system includes a first loading device, a second loading device, a first pushing mechanism and a second pushing mechanism; the loading end of the first loading device is connected to the end of the loading station away from the welding station and conveys the bracket to the loading station; the loading end of the second loading device is connected to the middle side of the loading station and conveys the nuts to the loading station; the second pushing mechanism is installed at the loading end of the second loading device, and is used to push the nuts conveyed by the second loading device to the mounting part of the bracket in sequence; the first pushing mechanism is installed on the workbench and the driving end is located at the end of the loading station close to the welding part, and is used to push the bracket with the nuts placed on it to the welding station in sequence.

[0013] Preferably, the first pushing mechanism includes a first telescopic device and a first rotating device; the first telescopic device is fixedly arranged, and the first rotating device is installed at the driving end of the first telescopic device, and the first rotating device is suitable for rotating the first push plate installed at the driving end to between the two brackets closest to the welding station, and then the first push plate is driven by the first telescopic device to push the bracket closest to the welding station to the welding station; the second pushing mechanism includes a second telescopic device and a third telescopic device; the second telescopic device is fixedly arranged horizontally, and the third telescopic device is vertically installed at the driving end of the second telescopic device; the third telescopic device is suitable for inserting the first insertion rod installed at the driving end into the center hole of the rear nut of the two nuts closest to the loading station, and then the first insertion rod is driven by the second telescopic device to push the nut closest to the loading station to the bracket of the loading station.

[0014] Preferably, the positioning mechanism includes a fifth telescopic device, a sixth telescopic device and a seventh telescopic device; the fifth telescopic device and the sixth telescopic device are horizontally arranged on both sides of the welding station, and the fifth telescopic device and the sixth telescopic device respectively drive the second push plate and the third push plate installed at the driving end to move toward or away from each other, thereby clamping or releasing the bracket located at the welding station; the seventh telescopic device is vertically installed under the workbench, and the seventh telescopic device is suitable for driving the second insertion rod installed at the driving end to extend into the through hole of the bracket located at the welding station during the welding process.

[0015] Compared with the prior art, the present invention has the following advantages:

[0016] The feeding system automatically loads the bracket and nut, while the centering rotation mechanism aligns the nut with the bracket's perforation, allowing the welding device to accurately weld the nut. Compared to traditional methods, this application can achieve a fully automated welding process for the guide rail bracket, thereby effectively improving the welding efficiency and quality of the guide rail bracket. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the combined structure of the bracket and nut that constitute the guide rail bracket in this application.

[0018] Figure 2 This is a schematic diagram of the structure of the guide rail bracket in this application.

[0019] Figure 3 This is a schematic diagram of the overall structure of this application.

[0020] Figure 4 This is a schematic diagram of the coordination structure of the feeding system and the positioning mechanism with the workbench in this application.

[0021] Figure 5 Schematic diagram of the structure of the workbench in this application.

[0022] Figure 6 This is a schematic diagram of the coordination structure between the feeding system and the workbench in this application.

[0023] Figure 7 This is a structural diagram of the first pushing mechanism in this application.

[0024] Figure 8 This is a schematic diagram of the local state of the first pushing mechanism starting to push materials in this application.

[0025] Figure 9 This is a schematic diagram of the partial state of the first pushing mechanism in this application completing pushing.

[0026] Figure 10 This is a schematic structural diagram of the second pushing mechanism in this application.

[0027] Figure 11 This is a schematic diagram of the position of the nut when placed on the bracket in this application.

[0028] Figure 12 This is a structural diagram of the centering rotation mechanism in this application.

[0029] Figure 13 This is a schematic diagram of the disassembled state of the folding component and the second rotating device in this application.

[0030] Figure 14 This is a structural diagram of the folding block in this application when it is fully folded.

[0031] Figure 15 This is a schematic diagram of the decomposed state of the guide plate in this application.

[0032] Figure 16 This is a schematic diagram of the state when the folding component in this application opens the folding mouth.

[0033] Figure 17 This is a schematic diagram of the state when the folding component in this application folds the folding mouth.

[0034] Figure 18 This is a schematic diagram of the partial cross-sectional structure of the folding component in this application.

[0035] Figure 19 This is a schematic diagram of the installation structure of the positioning mechanism and the workbench in this application.

[0036] In the figure: guide rail bracket 100, bracket 110, mounting portion 111, flange 113, through-hole 112, nut 120, center hole 121, welding portion 122, workbench 2, first limiting plate 21, first loading port 211, second loading port 212, second limiting plate 22, loading station 210, welding station 220, avoidance groove 221, loading system 3, first loading device 31, second loading device 32, first pushing mechanism 33, first telescopic device 331, first mounting plate 3311, first rotating device 332, first pushing plate 3321, second pushing mechanism 34, second telescopic device 341, second mounting plate 3411, third telescopic device 342, first insertion rod 3421, first cutting device 35, second cutting device 36, centering rotation Mechanism 4, fourth telescopic device 41, connecting frame 42, connecting seat 421, supporting seat 422, clutch groove 4220, connecting plate 423, second rotating device 43, folding assembly 44, folding block 441, folding mouth 4410, traction seat 4411, guide pin 4412, traction block 4413, traction plate 442, traction groove 4420, extension frame 4421, guide plate 443, guide groove 4430, guide sleeve 4431, mounting sleeve 4432, first spring 444, pressure block 445, pressure rod 4451, clutch block 446, second spring 447, positioning mechanism 5, fifth telescopic device 51, second push plate 511, sixth telescopic device 52, third push plate 521, seventh telescopic device 53, second insertion rod 531, welding device 6, frame 700. DETAILED DESCRIPTION

[0037] Below, the present application is further described in conjunction with specific implementation methods. It should be noted that, in the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" and the like are intended to mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms should not be understood as necessarily referring to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification.

[0038] In the description of this application, it should be noted that for directional words, such as the terms "center", "horizontal", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and so on, indicating the orientation and position relationship are based on the orientation or position relationship shown in the accompanying drawings, which is only for the convenience of describing this application and simplifying the description, and does 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 cannot be understood as limiting the specific scope of protection of this application.

[0039] It should be noted that the terms "first", "second", etc. in the description and claims of this application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence.

[0040] In this application, unless otherwise expressly specified or limited, terms such as "mounted," "connected," "connect," and "fixed" should be understood in a broad sense. For example, they may refer to connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components or interaction between two components. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0041] In this application, unless otherwise expressly specified or limited, a first feature being "above" or "below" a second feature may include the first and second features being in direct contact, or may include the first and second features being in contact not directly but through another feature between them. Moreover, a first feature being "above," "above," and "above" a second feature may include the first feature being directly above or obliquely above the second feature, or may simply mean that the first feature is higher in level than the second feature. A first feature being "below," "below," and "below" a second feature may include the first feature being directly below or obliquely below the second feature, or may simply mean that the first feature is lower in level than the second feature.

[0042] The terms "comprises" and "having" and any variations thereof in the specification and claims of this application are intended to cover non-exclusive inclusions. For example, a process, method, system, product or apparatus that includes a series of steps or units is not necessarily limited to those steps or units expressly listed, but may include other steps or units not expressly listed or inherent to such process, method, product or apparatus.

[0043] One of the preferred embodiments of this application is as follows: Figure 3As shown, an automatic nut welding device for a guide rail bracket includes a workbench 2 mounted on a frame 700, a loading system 3, a positioning mechanism 5, a centering and rotating mechanism 4, and a welding device 6. A welding station 220 and a loading station 210 are spaced apart on the workbench 2. The loading system 3 is mounted on the side of the workbench 2 to transport the guide rail brackets 100 to be welded to the loading station 210 and push them one by one to the welding station 220. The positioning mechanism 5 is mounted on the side of the welding station 220 to position the bracket 110 during the welding process; the centering and rotating mechanism 4 is mounted above the welding station 220, and the welding device 6 is mounted on the side of the welding station 220.

[0044] The entire welding process includes a first process and a second process; wherein, in the first process: the positioning mechanism 5 can first position and clamp the bracket 110 in the guide rail bracket 100 to be welded in the welding station 220, and then drive the nut 120 in the guide rail bracket 100 to be welded to be aligned with the through hole 112 of the bracket 110 through the centering rotation mechanism 4. At this time, not only the center hole 121 of the nut 120 coincides with the axis of the through hole 112 of the bracket 110, but the side of the nut 120 also remains parallel to the flange 113 on the side of the bracket 110. Finally, the welding device 6 can weld the two welding parts 122 of the side wall of the nut 120 parallel to the flange 113 on the bracket 110.

[0045] Second process: After completing the first process, the positioning mechanism 5 can first loosen the clamping of the bracket 110. During this process, after the welding portion 122 of the nut 120 cools down for a certain period of time, it can be fixed to the mounting portion 111 of the bracket 110. Then, the centering rotation mechanism 4 can maintain the alignment of the nut 120 and the through-hole 112 and drive the nut 120 to rotate the guide rail bracket 100 180 degrees, thereby aligning the two unwelded welding portions 122 with the welding device 6. Then, the welding device 6 can weld the remaining two welding portions 122 of the nut 120 in the guide rail bracket 100.

[0046] Compared to the traditional method, the present application realizes automatic loading of the bracket 110 and the nut 120 through the loading system 3, and simultaneously aligns the nut 120 with the through-hole 112 of the bracket 110 through the centering rotation mechanism 4, so that the welding device 6 can accurately weld the nut 120. Thus, while realizing fully automatic welding of the guide rail bracket 100, it can also effectively improve the welding efficiency and welding quality of the guide rail bracket 100.

[0047] It should be noted that the workbench 2, the feeding system 3, the positioning mechanism 5, the centering rotation mechanism 4 and the welding device 6 can be installed in a unified frame 700, or there can be multiple frames 700, with different functional components installed in different frames 700. Figure 3As shown, due to the obstruction of the centering rotation mechanism 4, the welding device 6 can only extend the welding head to the welding portion 122 of the nut 120 in an inclined posture for welding. The specific structure and working principle of the welding device 6 are well known to those skilled in the art. The welding device 6 can be equipped with two welding heads to weld the two welding portions 122 simultaneously, or it can be equipped with a single welding head that can be moved to achieve sequential welding of the two welding portions 122 on the same side. The specific welding head arrangement can be selected according to actual needs.

[0048] In this embodiment, Figures 4 to 6 As shown, a first limiting plate 21 and a second limiting plate 22 are arranged in parallel on the workbench 2. The first limiting plate 21 and the second limiting plate 22 are spaced apart to form a loading station 210. The loading station 210 extends toward the welding station 220. A first loading port 211 is formed at the end of the loading station 210 away from the welding station 220. The second limiting plate 22 is divided into two spaced sections. The spaced area between the two second limiting plates 22 on one side of the middle of the loading station 210 forms a second loading port 212. The loading system 3 includes a first loading device 31, a second loading device 32, a first pushing mechanism 33, and a second pushing mechanism 34. The loading end of the first loading device 31 is connected to the first loading port 211 for conveying the bracket 110 toward the loading station 210. The loading end of the second loading device 32 is connected to the second loading port 212 for conveying the nut 120 toward the loading station 210. The second pushing mechanism 34 is mounted on the loading end of the second loading device 32 and is used to sequentially push the nuts 120 delivered by the second loading device 32 to the mounting portion 111 of the bracket 110. The first pushing mechanism 33 is mounted on the workbench 2 with its driving end located at the end of the loading station 210 near the welding portion 122 and is used to sequentially push the bracket 110 with the nuts 120 placed thereon to the welding station 220.

[0049] It is understandable that both the first loading device 31 and the second loading device 32 use a vibrating loading tray. The specific structure and working principle are well known to those skilled in the art and will not be elaborated on in detail here. Since the guide rail bracket 100 needs to rotate 180° around the axis of the perforation 112 during the second process, and the center of the perforation 112 is offset from the structural center of the bracket 110 in the top view, it is necessary to ensure that the welding station 220 has sufficient range for the bracket 110 to rotate, that is, a gap needs to be maintained between the welding station 220 and the loading station 210. However, in the loading station 210, multiple brackets 110 are close together, so in order to ensure that the guide rail bracket 100 in the welding station 220 can be welded smoothly, the brackets 110 with nuts 120 placed in the loading station 210 need to be sent to the welding station 220 one by one.

[0050] At the same time, during the welding of the guide rail bracket 100, the bracket 110 and nut 120 at the loading station 210 need to be stopped to ensure that they do not interfere with the welding of the guide rail bracket 100 at the welding station 220. There are various ways to stop the conveyance of the bracket 110 and nut 120, including directly stopping the first loading device 31 and the second loading device 32, or providing an additional pause device to pause the conveyance of the bracket 110 and nut 120.

[0051] It should be noted that in order to stop the conveying of the brackets 110 and nuts 120 by stopping the first and second feeding devices 31, 32, the first and second feeding devices 31, 32 need to be started and stopped once during each welding process of the guide rail bracket 100. Because the first and second feeding devices 31, 32 have a large starting load, frequent starting and stopping may cause the first and second feeding devices 31, 32 to malfunction; therefore, in this embodiment, an additional pause device is preferably provided to pause the conveying of the brackets 110 and nuts 120.

[0052] Specifically, such as Figure 4 and Figure 6 As shown, the feeding system 3 further includes a first stopper 35 and a second stopper 36. The first stopper 35 is mounted on the feeding end of the second feeding device 32 and can stop the nuts 120 being conveyed from the feeding end of the second feeding device 32. The second stopper 36 is mounted on the workbench 2 and is located on one side of the feeding station 210. The second stopper 36 can stop the brackets 110 being conveyed from the feeding station 210.

[0053] It should be known that the first cut-off device 35 and the second cut-off device 36 only hinder the movement of the nut 120 and the bracket 110, which makes the loading ends of the first loading device 31 and the second loading device 32 unable to continue filling after filling the corresponding brackets 110 and nuts 120, but the first loading device 31 and the second loading device 32 can continue to work.

[0054] Specifically, there are many ways to install the first pushing mechanism 33. For ease of understanding, a detailed description will be given below using one specific example. Figures 7 to 9 As shown, the first pushing mechanism 33 includes a first telescopic device 331 and a first rotating device 332. The first telescopic device 331 is fixed to the workbench 2, and the driving end of the first telescopic device 331 is installed with a first mounting plate 3311. The first rotating device 332 can be fixedly installed on the first mounting plate 3311, and the driving end of the first rotating device 332 is installed with a first pushing plate 3321. When it is necessary to load the material to the welding station 220, as shown in FIG. Figure 8As shown, the first push plate 3321 can be driven away from the bracket 110 by the rotation of the first rotating device 332, and the rotation plane of the first push plate 3321 is perpendicular to the movement path of the bracket 110. Then, the bracket 110 with the nut 120 placed thereon can be driven by the first loading device 31 to move toward the welding station 220 until the rotation plane of the first push plate 3321 is located between the two brackets 110 closest to the welding station 220. Then, the first push plate 3321 can be driven by the rotation of the first rotating device 332 to rotate between the two brackets 110. Then, as shown in FIG. Figure 9 As shown, the first telescopic device 331 drives the first mounting plate 3311 to drive the first rotating device 332 to move parallel to the direction of the loading station 210, and then the first push plate 3321 can push the bracket 110 closest to the welding station 220 to the welding station 220.

[0055] It should be noted that while the first push plate 3321 is pushing the bracket 110 with the nut 120 placed thereon toward the welding station 220, the second stopper 36 can stop the bracket 110 in the loading station 210. Since the bracket 110 is stopped, the first stopper 35 also needs to stop the nut 120 to prevent multiple nuts 120 from being placed on the same bracket 110.

[0056] It is understood that the specific structures and operating principles of the first telescopic device 331, the first rotating device 332, the first blocking device 35, and the second blocking device 36 are well known to those skilled in the art. Common examples of the first telescopic device 331 include pneumatic cylinders, hydraulic cylinders, and linear motors, with pneumatic cylinders being preferred in this embodiment. Common examples of the first rotating device 332 include motors, rotary cylinders, and rotary hydraulic cylinders, with motors being preferred in this embodiment. Common examples of the first blocking device 35 and the second blocking device 36 include pneumatic cylinders, hydraulic cylinders, and linear motors, with pneumatic cylinders being preferred in this embodiment.

[0057] Specifically, the workbench 2 is provided with an open slot (not shown) in the middle of the loading station 210. The second stopper 36 is fixedly mounted on the lower portion of the workbench 2 and engages the open slot via a driving rod (not shown). When the bracket 110 needs to be paused, the second stopper 36 can drive the rod through the open slot and engage with the through-hole 112 on the bracket 110 to achieve the stop. Accordingly, since the upper portion of the loading end of the second loading device 32 is an open structure, the first stopper 35 can be fixedly mounted on the upper portion of the loading end of the second loading device 32, with the driving rod facing downward. When the bracket 110 is paused, the first stopper 35 can drive the rod to engage with the center hole 121 of the nut 120 at the corresponding position to achieve the stop.

[0058] Specifically, there are many ways to install the second pushing mechanism 34. For ease of understanding, a detailed description will be given below using one specific example. Figure 10 As shown, the second pushing mechanism 34 includes a second telescopic device 341 and a third telescopic device 342. The second telescopic device 341 is fixedly mounted horizontally below the loading end of the second loading device 32. The driving end of the second telescopic device 341 is fixedly mounted to a second mounting plate 3411. The third telescopic device 342 is vertically mounted to the second mounting plate 3411. The upward-facing driving end of the third telescopic device 342 is mounted to a first insertion rod 3421. The installation position of the second pushing mechanism 34 is closer to the loading station 210 relative to the first shut-off device 35. When it is necessary to place the nut 120 on the bracket 110, the first stop device 35 first stops the nut 120, and then the third telescopic device 342 drives the first insertion rod 3421 upward to insert into the center hole 121 of the rear nut 120 of the two nuts 120 closest to the loading station 210, and then the second telescopic device 341 will drive the second mounting plate 3411 to drive the third telescopic device 342 to push the nut 120 closest to the loading station 210 to the bracket 110 of the loading station 210 through the first insertion rod 3421.

[0059] It is understandable that the specific structure and working principle of the second telescopic device 341 and the third telescopic device 342 are well known to those skilled in the art and will not be elaborated on in detail here. Common second telescopic devices 341 and third telescopic devices 342 include air cylinders, hydraulic cylinders, and linear motors. In this embodiment, air cylinders are preferably used. The specific structure of the third telescopic device 342 is substantially consistent with the structure of the first cut-off device 35 and the second cut-off device 36. It should be noted that in order to ensure that the first insertion rod 3421 at the driving end of the third telescopic device 342 can be smoothly plugged into the center hole 121 of the nut 120 and drive the nut 120 to move, an open groove for the first insertion rod 3421 to pass through is provided at the bottom of the feeding end of the second feeding device 32 along the extension direction.

[0060] It should be noted that when the nut 120 is transported to the bracket 110, the center hole 121 of the nut 120 is not aligned with the through hole 112 on the bracket 110. In addition, during the process of transporting the bracket 110 with the nut 120 to the welding station 220, the nut 120 may move relative to the bracket 110, causing the position of the nut 120 on the bracket 110 to deviate from the through hole 112 on the mounting portion 111. An example of the position of the nut 120 on the mounting portion 111 of the bracket 110 is as follows: Figure 11As shown in (1). Therefore, in the subsequent welding process, it is necessary to drive the nut 120 from the position deviating from the through-hole 112 to the center hole 121 to align with the through-hole 112 through the centering rotation mechanism 4, and the side of the nut 120 is parallel to the flange 113 of the side of the mounting portion 111, that is, Figure 11 As shown in (2).

[0061] In this embodiment, there are many specific structures of the centering rotation mechanism 4 that can achieve the above functions. For the sake of easy understanding, the following will be described in detail using one specific structure. Figure 12 and Figure 13 As shown, the centering rotation mechanism 4 includes a fourth telescopic device 41, a second rotation device 43, and a retraction assembly 44. The fourth telescopic device 41 is vertically fixedly mounted on the frame 700, the second rotation device 43 is vertically arranged and mounted on the output end of the fourth telescopic device 41, and the retraction assembly 44 is mounted on the output end of the second rotation device 43. The end of the retraction assembly 44 forms a retraction opening 4410 for centering and clamping the nut 120. The center of the retraction opening 4410 is aligned with the through-hole 112 on the bracket 110.

[0062] Initially, in order to ensure that the bracket 110 with the nut 120 placed thereon, that is, the guide rail bracket 100 to be welded can smoothly enter the welding station 220, the fourth telescopic device 41 can drive the second rotating device 43 to drive the folding assembly 44 to move vertically upward; at the same time, the second rotating device 43 can drive the folding assembly 44 to open the folding opening 4410 to an opening size larger than the cross-sectional size of the nut 120.

[0063] During the first process, the fourth telescopic device 41 first causes the second rotating device 43 to drive the retraction assembly 44 to move downward until the height of the port is lower than the upper end surface of the nut 120, so that the nut 120 falls into the retraction opening 4410, the opening size of which is larger than the cross-sectional size of the nut 120. Then, the retraction assembly 44, driven by the second rotating device 43, retracts the retraction opening 4410. During the retraction process, the nut 120 can be driven to move toward the position of the through-hole 112 of the mounting portion 111 until the center hole 121 of the nut 120 is aligned with the through-hole 112. After completing the first process, during the second process, the second rotating device 43 can drive the retraction assembly 44 to maintain the retraction of the nut 120 and drive the partially welded guide rail bracket 100 to rotate 180 degrees.

[0064] It can be understood that the specific structure and working principle of the fourth telescopic device 41 and the second rotating device 43 are well-known technologies to those skilled in the art, so they will not be elaborated in detail here; the common fourth telescopic device 41 includes a cylinder, a hydraulic cylinder and a linear motor, etc., and a cylinder is preferably used in this embodiment; the common second rotating device 43 includes a motor, a rotary cylinder and a rotary hydraulic cylinder, and a motor is preferably used in this embodiment.

[0065] In this embodiment, there are many specific structures of the folding component 44 that can achieve the above functions. For the sake of easy understanding, the following will be described in detail using one of the structures. Figures 13 to 17 As shown, the second rotating device 43 is mounted to the output end of the fourth telescopic device 41 via a connecting frame 42. The retraction assembly 44 includes a traction plate 442, a guide plate 443, and four retraction blocks 441. The four retraction blocks 441 are arranged around a folding opening 4410. The connecting frame 42 extends to the output end of the second rotating device 43 and engages with the guide plate 443 via a clutch mechanism. The retraction blocks 441 and the guide plate 443 engage via a guide mechanism. The traction plate 442 is connected to the output end of the second rotating device 43 and engages with the retraction blocks 441 via a traction mechanism.

[0066] During the first process, the traction plate 442 rotates under the drive of the second rotating device 43. At this time, the guide plate 443 remains stationary under the restraint of the clutch structure, that is, the clutch structure is in an engaged state. The retraction block 441 then gradually retracts through the traction structure and the guide structure until the cross-section of the retraction opening 4410 is a square corresponding to the cross-sectional dimensions of the nut 120. During the second process, the retraction block 441 maintains its grip on the nut 120. At this time, the traction plate 442, driven by the second rotating device 43, drives the guide plate 443 to disengage the restraint of the clutch structure and rotate 180° synchronously, that is, the clutch structure is in a free state.

[0067] Specifically, such as Figures 14 to 17As shown, the four retracting blocks 441 can be folded together to form a columnar structure. A single retracting block 441 is fan-shaped, and the inner end of each retracting block 441 is provided with a flat retracting surface. The retracting surface forms a retracting opening 4410 with a square cross-section. Each retracting block 441 is provided with a radially extending traction seat 4411 at its upper end. A guide pin 4412 with a circular cross-section is provided on the upper end of each retracting block 4411. A traction block 4413 with a rectangular cross-section is provided on the lower end of each retracting block 4411. A guide plate 443 is provided above the traction seat 4411. Four guide slots 4430 are equidistantly spaced along the circumference of the guide plate 4430. These slots 4430 cooperate with corresponding guide pins 4412 to form a guide structure. The traction plate 442 is annularly disposed below the traction seat 4411. The traction seat 4411 is provided with four traction grooves 4420 equidistantly distributed along the circumference. The traction grooves 4420 cooperate with corresponding traction blocks 4413 to form a traction structure. The traction grooves 4420 and the guide grooves 4430 extend in a non-parallel direction.

[0068] For ease of understanding, the specific working process of the folding component 44 will be described in detail below.

[0069] Initially, if Figure 16 As shown, the gathering opening 4410 formed by the four gathering blocks 441 is in an open state, the traction block 4413 is located in the middle or first end of the traction groove 4420, and the guide pin 4412 is located in the middle or first end of the guide groove 4430.

[0070] When the first process is carried out, Figure 16 and Figure 17 As shown, the traction plate 442 is driven by the second rotating device 43 to rotate in the first direction. Figure 17 For example, the first direction is clockwise. During this process, the guide plate 443 is in a stationary state under the bite of the clutch structure, and the traction block 4413 slides relatively toward the second end along the traction groove 4420, and the guide pin 4412 slides relatively toward the second end along the guide groove 4430; until Figure 17 As shown, the traction block 4413 is located at the second end of the traction groove 4420, and the guide pin 4412 is located at the second end of the guide groove 4430; at this time, the closing mouth 4410 is closed into a square cross-section and the nut 120 is aligned and clamped to facilitate the welding device 6 to perform the first welding on the nut 120.

[0071] After completing the first process, the traction plate 442 continues to rotate in the first direction driven by the second rotating device 43. At this time, since the traction block 4413 is located at the second end of the traction groove 4420, and the guide pin 4412 is located at the second end of the guide groove 4430, the traction block 4413 and the guide pin 4412 cannot continue to slide relative to each other, so that the traction plate 442 is transmitted to the guide plate 443 by the driving force of the second rotating device 43, and then the contact clutch structure restricts the guide plate 443, so that the guide plate 443 drives the partially welded guide rail bracket 100 to rotate 180° with the traction plate 442 and the retraction block 441, so that the welding device 6 can perform a second welding on the nut 120.

[0072] It is understandable that, since the traction plate 442 is installed below the guide plate 443, and the traction plate 442 needs to be connected to the second rotating device 43 for driving; Figure 13 As shown, an extension frame 4421 can be provided on the side of the traction plate 442 , one end of the extension frame 4421 is connected to the traction plate 442 , and the other end extends to the top of the guide plate 443 to be drivingly connected to the second rotating device 43 .

[0073] Specifically, in order to facilitate the setting of the clutch structure, such as Figure 13 As shown, the connecting frame 42 includes a connecting seat 421, a support seat 422 and a plurality of connecting plates 423; the connecting seat 421 is fixedly installed at the output end of the fourth telescopic device 41, the support seat 422 is annular and is located at the output end of the second rotating device 43 and is connected to the guide plate 443 through a clutch structure, and the support seat 422 and the connecting seat 421 are connected through a plurality of connecting plates 423.

[0074] Specifically, such as Figure 15 and Figure 18 As shown, the support seat 422 is located above the guide plate 443. The guide plate 443 is provided with an axially extending mounting sleeve 4432 on the end surface thereof near the support seat 422. The clutch structure includes a clutch block 446, a second spring 447, and a clutch slot 4220. The clutch block 446 is elastically slidably mounted within the mounting sleeve 4432 by the second spring 447. The clutch slot 4220 is provided in the support seat 422. When the clutch block 446 engages with the clutch slot 4220 under the elastic force of the second spring 447, the guide plate 443 is restrained, and the clutch structure is now in an engaged state. When the clutch block 446, driven by the traction plate 442, passes over the clutch slot 4220, the restraint of the guide plate 443 is released, and the clutch structure is now in a free state.

[0075] It should be known that the clutch slot 4220 is an arc-shaped slot, and at least the position where the clutch block 446 cooperates with the clutch slot 4220 is arc-shaped. The clutch block 446 can be a cylinder with a hemispherical front end, or a spherical shape.

[0076] It should be noted that the installation of the mounting sleeve 4432 may interfere with the extension frame 4421 and affect the rotation of the traction plate 442. Therefore, the specific number of extension frames 4421 installed on the traction plate 442 can be set according to the angle of rotation of the traction plate 442 in the first process. Figure 16 and Figure 17 As shown, during the first process, the traction plate 442 rotates from position A to position B. If the corresponding central angle between A and B is less than 90°, then the maximum number of extension brackets 4421 required is four. In this case, the installation position of the mounting sleeve 4432 only needs to ensure that it does not interfere with the rotation of the traction plate 442. For example, if the corresponding central angle between A and B is 45°, and the number of extension brackets 4421 required is four, then when installing the mounting sleeve 4432, it is sufficient to ensure that the angle between the mounting sleeve 4432 and the extension bracket 4421 in the direction opposite to the first direction is greater than 45°.

[0077] It is understood that to ensure that the guide plate 443 is constrained and stabilized by the clutch structure during the first process, the support base 422 and the guide plate 443 are engaged by multiple clutch structures arranged at equal intervals along the circumference. If the number of clutch structures is greater than two, the distance from the center of the guide plate 443 to each clutch structure is different.

[0078] It should be known that, based on the setting of the clutch structure, after completing the welding of the current guide rail bracket 100, in order to smoothly weld the next guide rail bracket 100, the closing mouth 4410 needs to be opened again. The closing mouth 4410 can be reopened by the closing block 441 being driven by the guide structure and the traction structure to rotate 180° in the first direction to the initial position. At this time, the guide plate 443 will be restricted by the clutch structure again, and then rotated by the second rotating device 43 in the second direction opposite to the first direction to open the closing mouth 4410. The above-mentioned way of reopening the closing mouth 4410 will form an idle stroke, thereby reducing the welding efficiency of the guide rail bracket 100. Therefore, the way of reopening the closing mouth 4410 can be optimized by improving the arrangement of the clutch structure.

[0079] Specifically, a single clutch structure corresponds to two clutch slots 4220, which are spaced 180° apart along the circumference of the support base 422. During the welding process, the traction plate 442 always rotates in a first direction. During the first process, the clutch block 446 engages with one of the clutch slots 4220. During the second process, the clutch block 446 rotates 180° along the first direction with the guide plate 443 before engaging with the other clutch slot 4220. At this point, the guide plate 443 is restrained again. After the welding process is completed, the traction plate 442 can be rotated in a second direction, opposite the first direction, by a set angle, so that the retraction block 441 gradually opens from the retracted state. At this point, the guide plate 443 remains stationary due to the clutch structure.

[0080] In this embodiment, Figure 13 、 Figure 15 and Figure 18 As shown, a guide sleeve 4431 is axially extended from the center of the lower end of the guide plate 443. The retraction assembly 44 also includes a pressure block 445 and a first spring 444 located within the retraction opening 4410. The pressure block 445 is axially slidably connected to the guide sleeve 4431 via a pressure rod 4451. The first spring 444 is sleeved on the pressure rod 4451 and connected to the pressure block 445 and the guide sleeve 4431, respectively. Alternatively, the first spring 444 is located within the guide sleeve 4431 and connected to the guide sleeve 4431 and the pressure rod 4451, respectively, to achieve an axial elastic sliding connection between the pressure block 445 and the guide plate 443. The cross-sectional dimensions of the pressure block 445 are slightly smaller than the cross-sectional dimensions of the retraction opening 4410 when it is in the retracted state. Therefore, during the welding process, the pressure block 445, under the action of the first spring 444, can apply pressure to the nut 120 against the bracket 110, thereby improving the welding quality between the nut 120 and the bracket 110.

[0081] It should be noted that the opening size of the gathering opening 4410 is limited by the size between the gathering block 441 and the bracket 110 and cannot cover the entire mounting portion 111. When the guide rail bracket 100 to be welded is loaded into the welding station 220, the nut 120 may approach the side of the mounting portion 111 of the bracket 110, that is, the nut 120 may be located outside the coverage of the opened gathering opening 4410. Therefore, during the welding process, the nut 120 needs to be pre-positioned so that it is located within the coverage of the gathering opening 4410 to facilitate the subsequent welding process.

[0082] There are various ways to adjust the position of the nut 120 before welding. For ease of understanding, one method will be described in detail below. Specifically, an electromagnet can be installed in the pressure block 445. Before the first process begins, the electromagnet generates a magnetic force by applying power to attract the nut 120 to the center of the closing opening 4410. During the welding process, the electromagnet can remain de-energized.

[0083] In this embodiment, in order to ensure the welding position of the guide rail bracket 100, the nut 120 and the bracket 110 need to be positioned and clamped at the welding station 220; wherein, the nut 120 is positioned and clamped by the above-mentioned centering rotation mechanism 4; the bracket 110 is positioned and clamped by the positioning mechanism 5; there are multiple specific structures of the positioning mechanism 5. For the sake of easy understanding, one of the specific structures will be described in detail below.

[0084] Specifically, such as Figure 4 and Figure 19 As shown, the positioning mechanism 5 includes a fifth telescopic device 51, a sixth telescopic device 52, and a seventh telescopic device 53. The fifth telescopic device 51 and the sixth telescopic device 52 are horizontally arranged on both sides of the welding station 220. The fifth telescopic device 51 and the sixth telescopic device 52 respectively drive the second push plate 511 and the third push plate 521 installed at the driving end to move toward or away from each other, thereby clamping or releasing the bracket 110 located at the welding station 220; the seventh telescopic device 53 is vertically installed below the workbench 2. During the welding process, the seventh telescopic device 53 can drive the second insertion rod 531 installed at the driving end to extend into the through hole 112 of the bracket 110 located at the welding station 220.

[0085] It can be understood that when the first process is carried out, the fifth telescopic device 51 and the sixth telescopic device 52 respectively drive the second push plate 511 and the third push plate 521 to move toward each other, thereby clamping the bracket 110 located at the welding station 220; at the same time, the seventh telescopic device 53 can drive the second insertion rod 531 to be plugged into the through hole 112 of the bracket 110 to achieve positioning. During the second process, the second insertion rod 531 can also position the rotation of the guide rail bracket 100. The specific structure and working principle of the fifth telescopic device 51, the sixth telescopic device 52 and the seventh telescopic device 53 are well-known technologies for those skilled in the art, so they will not be elaborated here. Common fifth telescopic devices 51, sixth telescopic devices 52 and seventh telescopic devices 53 include cylinders, hydraulic cylinders and linear motors, etc. In this embodiment, cylinders are preferably used. In order to facilitate the smooth plugging of the second insertion rod 531 with the through hole 112 on the bracket 110, as shown Figure 5As shown, the workbench 2 is provided with an avoidance groove 221 at the position of the welding station 220 , and the second insertion rod 531 can pass through the avoidance groove 221 and be plugged into the through hole 112 on the bracket 110 .

[0086] The above describes the basic principles, main features, and advantages of the present application. Those skilled in the art should understand that the present application is not limited to the above-described embodiments. The above-described embodiments and the specification merely illustrate the principles of the present application. Various changes and improvements may be made to the present application without departing from the spirit and scope of the present application. These changes and improvements fall within the scope of the present application for which protection is sought. The scope of protection claimed by the present application is defined by the appended claims and their equivalents.

Claims

1. A guide rail bracket automatic nut welding device, characterized in that: include: Workbench; welding stations and loading stations are arranged at intervals on the workbench; A loading system is installed on the side of the workbench to transport the guide rail brackets to be welded to the loading station and push them one by one to the welding station; Positioning mechanism; the positioning mechanism is arranged on the side of the welding station to position the bracket during the welding process; Centering and rotating mechanism; the centering and rotating mechanism is arranged on the upper part of the welding station; as well as welding equipment; The welding device is arranged on the side of the welding station; The welding process includes a first process and a second process; In the first process, the centering rotation mechanism drives the nut in the guide rail bracket to be welded to be aligned with the through hole of the bracket, and the welding device welds the two welding portions of the side wall of the nut parallel to the upper flange of the bracket; The second process: the centering rotation mechanism keeps the nut aligned with the perforation and drives the guide rail bracket to rotate 180 degrees by driving the nut, and then the welding device welds the two remaining welding parts of the nut in the guide rail bracket.

2. The guide rail bracket automatic nut welding device according to claim 1, characterized in that: The centering rotation mechanism comprises: Telescopic device; the telescopic device is fixedly arranged; Rotating device; the rotating device is connected to the output end of the telescopic device; and A retracting assembly; the retracting assembly is mounted at the output end of the rotating device, and the telescopic device is adapted to drive the retracting assembly to move axially; a retracting opening is formed at the end of the retracting assembly for centering and clamping the nut, and the center of the retracting opening is aligned with the through-hole on the bracket; When the first process is performed, the nut falls into the gathering opening whose opening size is larger than the cross-sectional size of the nut, and then the gathering component is gathered under the drive of the rotating device and drives the nut to be aligned with the through hole; When the second process is performed, the retracting assembly keeps retracting the nut and drives the guide rail bracket to rotate 180 degrees under the driving of the rotating device.

3. The guide rail bracket automatic nut welding device according to claim 2, characterized in that: The second rotating device is installed at the output end of the fourth telescopic device through a connecting frame; the folding assembly includes: Four gathering blocks; the four gathering blocks are arranged around to form the gathering opening; guide plate; the connecting frame extends to the output end of the second rotating device and cooperates with the guide plate through a clutch structure; the retracting block cooperates with the guide plate through a guide structure; and A traction plate; the traction plate is connected to the output end of the second rotating device and cooperates with the retracting block through a traction structure; During the first process, the traction plate rotates under the drive of the second rotating device, while the guide plate remains stationary under the restriction of the clutch structure, and the retraction block is gradually retracted by the traction structure and the guide structure until the cross-section of the retraction opening is a square corresponding to the cross-section size of the nut; When the second process is carried out, the retraction block keeps retraction and clamping of the nut. At this time, the traction plate, driven by the second rotating device, drives the guide plate to break away from the restriction of the clutch structure and rotate synchronously by 180 degrees.

4. The guide rail bracket automatic nut welding device according to claim 3, characterized in that: The upper end of the retracting block is provided with a radially extending traction seat, the upper end surface of the traction seat is provided with a guide pin with a circular cross section, and the lower end surface of the traction seat is provided with a traction block with a rectangular cross section; The guide plate is arranged above the traction seat, and is provided with four guide grooves equidistantly distributed along the circumference, and the guide grooves cooperate with the corresponding guide pins to form the guide structure; The traction plate is arranged below the traction seat, and the traction seat is provided with four traction grooves distributed equidistantly along the circumference, and the traction grooves cooperate with the corresponding traction blocks to form the traction structure; Wherein, the extension directions of the traction groove and the guide groove are not parallel.

5. The guide rail bracket automatic nut welding device according to claim 3, characterized in that: The connecting frame is provided with a support seat at the output end of the second rotating device, and the support seat is located above the guide plate; The clutch structure includes a clutch block, a second spring and a clutch slot; the clutch block is elastically slidably installed along the axial direction of the guide plate through the second spring, and the clutch slot is provided on the support seat; When the clutch block is engaged with the clutch slot under the elastic force of the second spring, the guide plate is restricted; When the clutch block passes over the clutch slot under the driving of the traction plate, the restriction of the guide plate is released.

6. The guide rail bracket automatic nut welding device according to claim 5, characterized in that: The support seat and the guide plate are matched with each other through a plurality of clutch structures arranged along the circumferential direction, and the distances between the arrangement position of each clutch structure and the center of the guide plate are different; The clutch structure corresponds to two clutch grooves, and the two clutch grooves are arranged 180° apart in the circumferential direction of the support seat; When the welding process is performed, the traction plate always rotates in the first direction; wherein, during the first process, the clutch block cooperates with one of the clutch slots, and during the second process, the clutch block rotates 180° along the first direction with the guide plate and then cooperates with the other clutch slot; After the welding process is completed, the traction plate rotates in a second direction opposite to the first direction, so that the folding block gradually opens from the folded state. At this time, the guide plate remains stationary under the action of the clutch structure.

7. The guide rail bracket automatic nut welding device according to claim 3, characterized in that: The retraction assembly further comprises a pressure block located in the retraction opening, the pressure block being axially elastically slidably mounted on the guide plate; the pressure block being adapted to exert pressure on the nut to press against the bracket during the welding process; An electromagnet is also provided in the pressing block, and the electromagnet is suitable for adsorbing the nut to the center of the closing opening by the magnetic force generated by power before the first process; the electromagnet is suitable for keeping the power off during the welding process.

8. The guide rail bracket automatic nut welding device according to any one of claims 1 to 7, characterized in that: The workbench is provided with a first limiting plate and a second limiting plate arranged in parallel to form the loading station, and the extending direction of the loading station is toward the welding station; The feeding system comprises: A first loading device; a loading end of the first loading device is connected to an end of the loading station away from the welding station and transports the bracket to the loading station; A second feeding device; a feeding end of the second feeding device is connected to one side of the middle portion of the feeding station and delivers nuts to the feeding station; The second pushing mechanism is installed at the feeding end of the second feeding device, and is used to push the nuts delivered by the second feeding device to the mounting portion of the bracket in sequence; and The first pushing mechanism is installed on the workbench and the driving end is located at one end of the loading station close to the welding part, which is used to push the bracket with the nut placed on it to the welding station in sequence.

9. The guide rail bracket automatic nut welding device according to claim 8, characterized in that: The first pushing mechanism includes a first telescopic device and a first rotating device; the first telescopic device is fixedly arranged, and the first rotating device is installed at the driving end of the first telescopic device. The first rotating device is suitable for rotating the first push plate installed at the driving end to between the two brackets closest to the welding station, and then the first push plate is driven by the first telescopic device to push the bracket closest to the welding station to the welding station; The second pushing mechanism includes a second telescopic device and a third telescopic device; the second telescopic device is fixed horizontally, and the third telescopic device is vertically installed on the driving end of the second telescopic device; the third telescopic device is suitable for inserting the first insertion rod installed on the driving end into the center hole of the rear nut of the two nuts closest to the loading station, and then the first insertion rod is driven by the second telescopic device to push the nut closest to the loading station onto the bracket of the loading station.

10. The guide rail bracket automatic nut welding device according to claim 1, characterized in that: The positioning mechanism includes a fifth telescopic device, a sixth telescopic device and a seventh telescopic device; The fifth telescopic device and the sixth telescopic device are horizontally arranged on both sides of the welding station, and the fifth telescopic device and the sixth telescopic device respectively drive the second push plate and the third push plate installed at the driving end to move toward or away from each other, thereby clamping or releasing the bracket located at the welding station; The seventh telescopic device is vertically installed below the workbench, and the seventh telescopic device is suitable for driving the second insertion rod installed at the driving end to extend into the through hole of the bracket located at the welding station during the welding process.

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