A rivet mechanism for a riveting device and a riveting device

Abstract

The application provides a rivet mechanism of a riveting device and the riveting device, wherein the rivet mechanism comprises an execution mechanism, a rivet nose mechanism and a rivet feeding mechanism. The rivet feeding mechanism comprises a rivet feeding assembly, a rivet limiting assembly and a transmission assembly. The transmission assembly comprises a first belt passage accommodating a rivet belt. The two sides of the first belt passage are provided with a toothed nail driving wheel and a guide block. The outlet is provided with a first baffle. The first baffle comprises a stripping part extending towards the first belt passage and a guide part extending away from the first belt passage. The transmission assembly ensures that the rivet belt can be stably separated from the toothed nail driving wheel through the stripping part of the first baffle, reduces the risk of belt jamming of the rivet belt in the transmission assembly, and at the same time, the guide part of the first baffle can limit the movement track of the rivet belt after being transmitted out, thereby improving the transmission stability of the rivet belt. In addition, the guide part of the first baffle can better guide the installation of the rivet belt, thereby improving the installation efficiency in the process of replacing the rivet belt. Therefore, the operation stability of the rivet mechanism in the riveting process and the efficiency of replacing the rivet belt are greatly improved.

Description

Technical Field

[0001] This application relates to the field of riveting device technology, and in particular to a rivet mechanism for a riveting device and a riveting device. Background Technology

[0002] A riveting device is a tool that performs self-piercing riveting (SPR) technology. It is a common manufacturing device in the automotive industry, and its core function is to securely connect two or more metal parts together using rivets. This process involves applying sufficient pressure to the rivet, causing it to penetrate the parts to be joined and form a mechanical locking structure, thereby achieving a strong mechanical connection.

[0003] Currently, riveting devices include those that feed rivets into the rivet nose mechanism via a rivet feed rail and high-pressure gas; another method is to supply rivets to the rivet nose mechanism using a rivet band.

[0004] Among them, the method of using a rivet feeding track has a high rivet feeding efficiency and can continuously feed rivets. However, its structure is complex, and during long-term processing, the high-speed moving rivets are prone to damage to the rivet nose mechanism. In addition, the stability of the posture control of the high-speed moving rivets is also a challenge.

[0005] While using rivet straps for rivet feeding can better control the rivet transmission posture and cause less damage to the rivet nose mechanism, the rivet straps are inconvenient to install, cannot be used for continuous processing for a long time, and the rivet strap feeding process is less stable, which can easily lead to rivet jamming or missing rivets. Summary of the Invention

[0006] The purpose of this application is to address the problems of poor operational stability and low efficiency in replacing rivet strips in existing riveting devices when the rivet mechanism uses a rivet strip feeding method. Therefore, this application provides a rivet mechanism and a riveting device. Through the cooperation of a rivet limiting component and a transmission component, the rivet strip can move stably and accurately between the rivet nose mechanism and the actuator. Simultaneously, the transmission component, by incorporating a first stop plate, serves two purposes: firstly, the release portion of the first stop plate ensures that the rivet strip can stably disengage from the toothed rivet drive wheel, reducing the risk of the rivet strip jamming in the transmission component; secondly, the guide portion of the first stop plate restricts the movement trajectory of the rivet strip after transmission, preventing the rivet strip from accumulating or tangling above the transmission component, thus affecting the transmission stability of the rivet strip. Furthermore, the guide portion of the first stop plate can better guide the installation of the rivet strip, improving the installation efficiency during rivet strip replacement.

[0007] This application provides a rivet mechanism for a riveting device, including: An actuator, including an actuator rod and a drive assembly that is drively connected to the actuator rod; A rivet nose mechanism is provided corresponding to the end of the actuator rod; The nail feeding mechanism includes a nail feeding assembly, a nail limiting assembly, and a transmission assembly; The pin limiting assembly is disposed between the rivet nose mechanism and the actuator, and the pin supply assembly and the transmission assembly are located on both sides of the pin limiting assembly; A rivet band is provided between the rivet supply assembly and the transmission assembly, and the rivet band passes through the rivet limiting assembly. The transmission assembly includes a first conveyor channel for receiving the rivet belt. One side of the first conveyor channel is configured as a toothed drive wheel for driving the rivet belt to move within the first conveyor channel; the other side is configured as a guide block for limiting the movement path of the rivet belt. The exit of the first conveyor channel is provided with a first baffle; the first baffle includes a peeling portion extending toward the first conveyor channel and a guide portion extending away from the first conveyor channel; the guide portion guides the rivet strip outward.

[0008] By adopting the above technical solution, the toothed drive wheels and guide blocks on both sides of the first conveyor channel can work together to make the rivet belt move stably in the first conveyor channel, and the guide blocks can limit the movement of the rivet belt to prevent it from disengaging from the toothed drive wheels and causing unstable transmission of the rivet belt.

[0009] On the other hand, since the toothed drive wheel relies on the toothed pins to transmit the rivet belt, when the rivet belt is transmitted to the outlet of the first conveyor channel, the peeling part of the first baffle can guide the rivet belt to peel off from the toothed pins of the toothed drive wheel, thereby avoiding the rivet belt from getting stuck with the toothed pins, which would cause the rivet belt to rotate further with the toothed drive wheel and cause the rivet belt and the toothed drive wheel to jam.

[0010] Meanwhile, the guide portion of the first baffle guides the rivet band outwards, thereby preventing the rivet band from being pulled inwards and increasing the risk of jamming between the rivet band and the toothed drive wheel. This ensures the stability and reliability of the transmission assembly for the rivet band.

[0011] In some embodiments, a mounting plate is provided on the side of the guide block opposite to the first conveyor channel, and the height of the mounting plate exceeds the top of the guide block; The peeling portion of the first baffle is spaced apart from the top of the guide block and forms a first tape outlet, and a tape-blocking space is formed between the first baffle and the mounting plate.

[0012] By employing the above technical solution, when the rivet band is subjected to a reverse pulling force, the blocking space can prevent the rivet band from intruding into the internal space between the first baffle and the toothed drive wheel, thus preventing the toothed drive wheel from jamming. Furthermore, the blocking space can be directly filled by the rivet band, thereby forming a locking force, effectively preventing the rivet band from retracting and increasing the stability of the transmission component against risks.

[0013] In some embodiments, the nail feeding mechanism further includes a tape cutting assembly disposed above the transmission assembly; The tape cutting assembly includes a tape feed port, a movable cutter disposed at the upper end of the tape feed port, and a tape stopper disposed at the lower end of the tape feed port; wherein, the blocking surface of the tape stopper is guided to the lower end of the tape feed port. The distance between the tape feed port and the first baffle is less than a first threshold, and the guide portion of the first baffle guides the tape stop plate.

[0014] By employing the above technical solution, excess rivet strips can be cut off using the cutting assembly, preventing excessively long rivet strips from interfering with normal riveting operations. Furthermore, the distance between the feed opening and the first stop plate is less than a first threshold value, and the guide portion of the first stop plate guides the rivet strip to the stop plate. This ensures that when the rivet strip is cut by the movable cutter, the rigidity of the rivet strip itself prevents it from falling out of the feed opening, thus maintaining the stability of the riveting process. Moreover, the stop plate located at the lower end of the feed opening further restricts the rivet strip's detachment in the event of accidental disengagement, allowing it to re-enter the feed opening under the guidance of the first stop plate and the stop plate, maintaining the stability of the riveting process.

[0015] In some embodiments, the first threshold is positively correlated with the stiffness of the rivet band; The first threshold is set to 5~10cm.

[0016] In some embodiments, the toothed drive wheel is provided with two rows of circumferentially arranged toothed pins, the distance between the two rows of toothed pins is greater than the width of the guide block, and the guide block is staggered from the two rows of toothed pins.

[0017] By adopting the above technical solution, the direct connection between the guide block and the toothed drive wheel is avoided, which would cause excessive friction of the rivet belt in the first conveyor channel, thereby affecting the transmission efficiency of the toothed drive wheel.

[0018] In some embodiments, the rivet nose mechanism includes a tapping channel for restricting the movement posture of the rivet; The pin-limiting assembly includes a base, and a pressing mechanism and a positioning mechanism disposed on the base; The base is provided with a second conveyor channel, and the second conveyor channel extends through the top of the tapping pipe opening; The positioning mechanism includes a rotatably mounted positioning rod, a first limiting block and a second limiting block that restrict the rotation of the positioning rod, and a sensor that detects the presence of the positioning rod. The positioning rod includes one end configured as a rotating end and rotatably mounted on the base, and the other end configured as a positioning end and extending into the second conveyor channel; An extension portion is provided on one side of the positioning rod, and the first limiting block and the second limiting block are provided on both sides of the extension portion, and the presence sensor is provided at the end of the extension portion; so that the positioning rod can switch between a first state and a second state. When the positioning rod is in the first state, the positioning end extends between the tapping pipe and the actuator rod to guide the rivets on the rivet band. The rivets on the rivet band can push the positioning rod, causing the positioning rod to switch from a first state to a second state; When the positioning rod is in the second state, the positioning end positions the rivet on the rivet band between the tapping pipe and the actuator rod, and the extension of the positioning rod triggers the presence sensor.

[0019] By adopting the above technical solution, the rivets on the rivet strip can be accurately controlled between the tapping channel and the actuator rod under the limiting action of the positioning mechanism, ensuring the accuracy of the riveting process. On the other hand, the positioning mechanism can prevent rivets from being missed in the rivet strip, or prevent the actuator from firing dry when there are missing rivets in the rivet strip.

[0020] In some embodiments, the pressing mechanism includes a pressing block movably disposed on the base, and a driving member for driving the pressing block to press against the second conveyor channel; The pressing block is used to press against the rivet strip in the second conveyor channel and prevent the rivet strip from retracting.

[0021] In some embodiments, the driving member is configured as an elastic member, and the pressing block continuously applies an elastic force, wherein the abutting end of the pressing block includes a first side and a second side disposed opposite to each other; The first side faces the entrance of the second conveyor channel, and the second side faces away from the entrance of the second conveyor channel; The first side is inclined toward the second conveyor channel to avoid obstructing the movement of the rivet band; The second side is positioned perpendicular to or away from the second conveyor channel to restrict the reverse movement of the rivet band.

[0022] By adopting the above technical solution, the pressing mechanism can ensure the stability of the rivet band position during the riveting process and prevent the rivet band from retracting under the impact of the actuator rod, thereby increasing the stability of the riveting process. At the same time, the inclined design of the first side prevents the pressing block of the pressing mechanism from excessively obstructing the normal movement of the rivet band.

[0023] In some embodiments, the nail feeding assembly includes a rotatably disposed nail feeding disc and a fixedly disposed guide tube; One end of the guide tube is positioned corresponding to the nail feeding disc, and the other end is positioned towards the nail limiting component; The nail feeder can be equipped with a rivet band, and the rivet band is continuously supplied to the nail limiting assembly through the guide tube.

[0024] This application also provides a riveting device, including a base and a C-type clamp fixedly disposed on the base. One end of the C-type clamp is provided with a lower die, and the other end is provided with a riveting mechanism as described in any of the above embodiments.

[0025] By adopting the above technical solution, in the rivet mechanism, the toothed drive wheels and guide blocks on both sides of the first conveyor channel can cooperate to make the rivet belt move stably in the first conveyor channel, and under the limiting effect of the guide block, it is ensured that the rivet belt is not easy to detach from the toothed drive wheel, which would cause the rivet belt transmission to be unstable.

[0026] On the other hand, since the toothed drive wheel relies on the toothed pins to transmit the rivet belt, when the rivet belt is transmitted to the outlet of the first conveyor channel, the peeling part of the first baffle can guide the rivet belt to peel off from the toothed pins of the toothed drive wheel, thereby avoiding the rivet belt from getting stuck with the toothed pins, which would cause the rivet belt to rotate further with the toothed drive wheel and cause the rivet belt and the toothed drive wheel to jam.

[0027] Simultaneously, the guide portion of the first baffle guides the rivet band outwards, thereby preventing the rivet band from being pulled inwards and increasing the risk of jamming between the rivet band and the toothed drive wheel. This ensures the stability and reliability of the transmission assembly's transmission of the rivet band, and improves the overall stability and reliability of the riveting device's operation. Attached Figure Description

[0028] Figure 1 This is a schematic diagram of the structure of a riveting device according to an embodiment of this application; Figure 2 This is a schematic diagram of the structure of a riveting device for removing the base according to an embodiment of this application; Figure 3 This is a partial structural schematic diagram of the rivet mechanism of a riveting device according to an embodiment of this application; Figure 4 This is a partial structural schematic diagram of the transmission component of a rivet mechanism according to an embodiment of this application, during the process of conveying the rivet belt. Figure 5 This is a partial structural diagram of the transmission component of a riveting mechanism according to an embodiment of this application, without the rivet band. Figure 6 This is a schematic diagram of the cutting assembly of a rivet mechanism according to an embodiment of this application; Figure 7 This is a schematic diagram of the internal structure of a rivet mechanism limiting component according to an embodiment of this application.

[0029] Explanation of reference numerals in the attached figures: 1. Riveting mechanism; 10. Implementing agency; 11. Actuating lever; 12. Drive assembly; 20. Nose-riving mechanism; 30. Nail supply mechanism; 31. Nail supply assembly; 311. Nail feeder; 312. Guide tube; 32. Nail-limiting components; 301. Base; 302. Pressing mechanism; 321. Pressing block; 322. Driving component; a. First side; b. Second side; 303. Positioning mechanism; 323. Positioning rod; 324. First limiting block; 325. Second limiting block; 326. Presence sensor; 327. Extension; 33. Transmission components; 331. First conveyor channel; 332. Toothed drive wheel; 333. Guide block; 334. First baffle; 335. Peeling section; 336. Guide section; 337. Mounting plate; 338. Belt-blocking space; 339. Toothed pin; 34. Strip cutting assembly; 341. Belt feed inlet; 342. Belt stop plate; 343. Movable cutter; 2. Base; 3. C-clamps; 4. Lower mold; 5. Rivet strap. Detailed Implementation

[0030] The following specific embodiments illustrate the implementation of this application. Those skilled in the art can easily understand other advantages and effects of this application from the content disclosed in this specification. Although the description of this application will be presented in conjunction with some embodiments, this does not mean that the features of this application are limited to this embodiment. On the contrary, the purpose of describing the application in conjunction with embodiments is to cover other options or modifications that may be derived based on the claims of this application. To provide a thorough understanding of this application, many specific details will be included in the following description. This application may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this application, some specific details will be omitted in the description. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this application can be combined with each other.

[0031] It should be noted that in this specification, similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0032] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0033] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0034] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.

[0035] Please see Figure 1 , Figure 1 This is a schematic diagram of the structure of a riveting device according to an embodiment of this application.

[0036] like Figure 1As shown, this application embodiment also provides a riveting device, including a base 2, a C-type clamp 3 fixedly disposed on the base 2, and a rivet mechanism 1 for the riveting device; wherein, one end of the C-type clamp 3 is provided with a lower die 4, and the other end is provided with the rivet mechanism 1.

[0037] During the riveting process, the parts to be connected are first placed between the lower mold 4 and the riveting mechanism 1, and then the riveting process is completed by the riveting mechanism 1.

[0038] Please see Figures 2 to 7 , Figure 2 This is a schematic diagram of a riveting device for removing the base according to an embodiment of this application. Figure 3 This is a partial structural schematic diagram of the rivet mechanism of a riveting device according to an embodiment of this application. Figure 4 This is a partial structural diagram of the transmission assembly of a riveting mechanism according to an embodiment of this application, showing the process of conveying the rivet belt. Figure 5 This is a partial structural diagram of the transmission component of a riveting mechanism according to an embodiment of this application, without the rivet band. Figure 6 This is a schematic diagram of the cutting strip assembly of a riveting mechanism according to an embodiment of this application. Figure 7 This is a schematic diagram of the internal structure of a rivet mechanism limiting component according to an embodiment of this application.

[0039] like Figures 2-7 As shown, a rivet mechanism 1 for a riveting device according to an embodiment of this application includes: The actuator 10 includes an actuator 11 and a drive assembly 12 that is pulsatorically connected to the actuator 11; The rivet mechanism 20 is provided at the end of the actuator 11; The nail feeding mechanism 30 includes a nail feeding component 31, a nail limiting component 32, and a transmission component 33; The pin limiting assembly 32 is disposed between the riveting nose mechanism 20 and the actuator 10, and the pin supply assembly 31 and the transmission assembly 33 are located on both sides of the pin limiting assembly 32. A rivet band 5 is provided between the rivet feeding assembly 31 and the transmission assembly 33, and the rivet band 5 passes through the rivet limiting assembly 32; The transmission assembly 33 includes a first conveyor channel 331 for accommodating the rivet belt 5. One side of the first conveyor channel 331 is provided with a toothed drive wheel 332 for driving the rivet belt 5 to move within the first conveyor channel 331; the other side is provided with a guide block 333 for limiting the movement path of the rivet belt 5. The outlet of the first conveyor channel 331 is provided with a first baffle 334; the first baffle 334 includes a peeling portion 335 extending toward the first conveyor channel 331 and a guide portion 336 extending away from the first conveyor channel 331; the guide portion 336 guides the rivet band 5 outward.

[0040] It should be noted that rivet tape 5 is an industrial consumable that arranges multiple rivets at a fixed interval and fixes them on a strip-shaped carrier (such as tape, metal tape or plastic tape), which facilitates continuous rivet picking, feeding and riveting by riveting equipment.

[0041] Furthermore, the strip-shaped carrier of the rivet band 5 can be made of plastic; and the rivet band 5 is wound into a spiral shape for conveying and supplying. Additionally, the rivet band 5 has positioning holes on both sides relative to the rivet for positioning and transmission.

[0042] Therefore, in the first conveyor channel 331, the tooth 339 of the toothed drive wheel 332 can be embedded in the positioning hole of the rivet belt 5, and the movement distance and speed of the rivet belt 5 can be precisely controlled by rotation; at the same time, the guide block 333 can prevent the rivet belt 5 from falling off or deviating from the transmission cooperation with the toothed drive wheel 332 during the movement, thereby ensuring that the toothed drive wheel 332 can make the rivet belt 5 move stably in the first conveyor channel 331; However, it should be noted that when the rivet belt 5 is transmitted to the outlet of the first conveyor channel 331, the positioning hole of the rivet belt 5 and the toothed nail 339 may become stuck and difficult to separate, which will cause the toothed nail drive wheel 332 to drive the rivet belt 5 to rotate further, causing the rivet belt 5 to jam the transmission component 33 and affecting the stability of the transmission component 33.

[0043] In the prior art, the jamming problem can be solved by increasing the fitting clearance between the tooth 339 of the toothed drive wheel 332 and the positioning hole. However, increasing the fitting clearance reduces the limiting effect of the toothed drive wheel 332 on the rivet band 5, making the rivet band 5 prone to loosening, thereby affecting the fixing effect of the limiting component on the rivet band 5, and thus affecting the riveting quality of the rivet.

[0044] Therefore, in this embodiment, a first baffle 334 is provided at the outlet of the first conveyor channel 331. The peeling portion 335 of the first baffle 334 can guide the rivet belt 5 to peel off from the toothed pins 339 of the toothed drive wheel 332, thereby preventing the rivet belt 5 from getting stuck with the toothed pins 339. This would prevent the rivet belt 5 from further rotating with the toothed drive wheel 332 and causing the rivet belt 5 and the toothed drive wheel 332 to jam. At the same time, the guide portion 336 of the first baffle 334 guides the rivet belt 5 outward, thereby avoiding the risk of the rivet belt 5 and the toothed drive wheel 332 jamming when the rivet belt 5 is subjected to an inward pulling force. This ensures the stability and reliability of the transmission of the rivet belt 5 by the transmission assembly 33.

[0045] Furthermore, in one embodiment, a mounting plate 337 is provided on the side of the guide block 333 away from the first conveyor channel 331, and the height of the mounting plate 337 exceeds the top of the guide block 333. The peeling portion 335 of the first baffle 334 is spaced apart from the top of the guide block 333 and forms a first tape outlet, and a tape-blocking space 338 is formed between the first baffle 334 and the mounting plate 337.

[0046] In a common application scenario, when the rivet band 5 is fully loaded onto the rivet feeding assembly 31, its significant weight necessitates a large pull-back force from the rivet feeding assembly 31 to ensure the rivet band 5 is placed as flat as possible within the rivet limiting assembly 32, thus guaranteeing the accuracy and reliability of the riveting process. However, as the rivet band 5 is used more, its weight on the rivet feeding assembly 31 decreases significantly. If the pull-back force of the rivet feeding assembly 31 is not adjusted promptly, it can easily lead to excessive pull-back force on the rivet band 5, exceeding the driving force of the toothed rivet drive wheel 332, resulting in a noticeable or rapid pull-back of the rivet band 5.

[0047] Therefore, when the rivet band 5 is subjected to a reverse pulling force, the blocking space 338 can prevent the rivet band 5 from intruding into the internal space between the first baffle 334 and the toothed drive wheel 332, thus preventing the toothed drive wheel 332 from jamming. Furthermore, the blocking space 338 can be directly filled by the rivet band 5, thereby forming a locking force, effectively preventing the rivet band 5 from retracting, and increasing the stability of the transmission component 33 against risks.

[0048] Furthermore, it should be noted that as the length of the rivet band 5 increases, its haphazard placement can interfere with normal riveting operations.

[0049] Therefore, in one embodiment, the nail feeding mechanism 30 further includes a tape cutting assembly 34 disposed above the transmission assembly 33; The tape cutting assembly 34 includes a tape feed port 341, a movable cutter 343 disposed at the upper end of the tape feed port 341, and a tape stopper 342 disposed at the lower end of the tape feed port 341; wherein, the blocking surface of the tape stopper 342 guides the lower end of the tape feed port 341. The distance between the tape feed port 341 and the first baffle 334 is less than the first threshold, and the guide portion 336 of the first baffle 334 guides the tape stop plate 342.

[0050] The excess rivet band 5 can be cut off by the cutting band assembly 34, thus preventing the excessively long rivet band 5 from interfering with normal riveting work.

[0051] It should be noted that when the movable cutter 343 of the tape cutting assembly 34 cuts off more than the rivet band 5, the rivet band 5 may detach from the tape feed opening 341 under its own gravity, causing the tape cutting assembly 34 to fail. Therefore, the distance between the tape feed opening 341 and the first baffle 334 is less than a first threshold value, so that the rivet band 5 can be supported within the tape feed opening 341 by its own rigidity, maintaining the stability of the tape cutting assembly 34.

[0052] Furthermore, if the rivet band 5 is subjected to a pull-back force or other vibrations, the rivet band 5 may detach from the feed port 341 under the combined action of gravity and pull-back force.

[0053] Therefore, in this embodiment, a belt stop plate 342 is further provided at the lower end of the belt feed port 341. When the rivet belt 5 accidentally falls out of the belt feed port 341, it restricts the rivet belt 5 from falling further. It also allows the rivet belt 5 to be re-engaged into the belt feed port 341 under the drive of the transmission component 33 and under the guidance of the guide portion 336 of the first baffle 334 and the belt stop plate 342, thus maintaining the stability of the belt cutting component 34.

[0054] In one embodiment, the first threshold is positively correlated with the stiffness of the rivet band 5, and the first threshold is set to 5~10cm to prevent the rivet band 5 from falling off from the feed port 341.

[0055] Therefore, in one embodiment, the toothed drive wheel 332 is provided with two rows of circumferentially arranged toothed pins 339, the distance between the two rows of toothed pins 339 is greater than the width of the guide block 333, and the guide block 333 is staggered from the two rows of toothed pins 339.

[0056] On the one hand, it avoids direct contact between the guide block 333 and the tooth 339 of the tooth drive wheel 332, which would cause excessive friction in the first conveyor belt 5 within the first conveyor belt channel 331, thereby affecting the transmission efficiency of the tooth drive wheel 332.

[0057] On the other hand, the distance between the guide block 333 and the toothed drive wheel 332 can be reduced so that the guide block 333 can interlock with the toothed pins 339 on the toothed drive wheel 332, thereby making it impossible for the toothed pins 339 to detach from the toothed drive wheel 332, thus maximizing the reliability and stability of the transmission process.

[0058] It should be noted that the rivet band 5 is prone to plastic deformation, which causes the rivet band 5 to be naturally curved when it is statically placed, making it difficult to place the rivet band 5 flat and accurately on the rivet nose mechanism 20 and the actuator 10.

[0059] Therefore, in one embodiment, the rivet nose mechanism 20 includes a tapping channel for restricting the movement posture of the rivet; The nail limiting assembly 32 includes a base 301, and a pressing mechanism 302 and a positioning mechanism 303 disposed on the base 301; The base 301 is provided with a second conveyor channel, which extends above the tapping pipe opening; The positioning mechanism 303 includes a rotatably mounted positioning rod 323, a first limiting block 324 and a second limiting block 325 that restrict the rotation of the positioning rod 323, and a sensor 326 that detects the presence of the positioning rod 323. The positioning rod 323 includes one end configured as a rotating end and rotatably mounted on the base 301, and the other end configured as a positioning end and extending into the second conveyor channel; An extension portion 327 is provided on one side of the positioning rod 323, and a first limiting block 324 and a second limiting block 325 are provided on both sides of the extension portion 327. A sensor 326 is provided at the end of the extension portion 327, so that the positioning rod 323 can switch between a first state and a second state. When the positioning rod 323 is in the first state, the positioning end extends between the tapping pipe and the actuator 11 to guide the rivets on the rivet band 5. The rivets on the rivet band 5 can push the positioning rod 323, causing the positioning rod 323 to switch from the first state to the second state; When the positioning rod 323 is in the second state, the positioning end positions the rivet on the rivet band 5 between the tapping pipe and the actuator rod 11, and the extension 327 of the positioning rod 323 triggers the presence sensor 326.

[0060] Thus, the pressing mechanism 302 allows the rivet band 5 to be placed flat between the tapping pipe and the actuator 11, ensuring the normal posture of the rivets on the rivet band 5. At the same time, the rivets on the rivet band 5 can be accurately positioned between the tapping pipe and the actuator 11 under the limiting action of the positioning mechanism 303, and are directly opposite the actuator 11 and the tapping pipe, ensuring the accuracy and reliability of the riveting process.

[0061] Furthermore, the positioning rod 323 of the positioning mechanism 303 can prevent the rivet strip 5 carrying rivets from passing through the second conveyor channel, thereby preventing rivets on the rivet strip 5 from being missed. Further, when a rivet strip 5 is missing a rivet, the positioning rod 323 of the positioning mechanism 303 cannot trigger the presence sensor 326, requiring the transmission assembly 33 to further drive the rivet strip 5. This prevents the rivet strip 5 in the missing rivet area from staying between the tapping channel and the actuator rod 11, thus preventing the actuator 10 from performing dry tapping.

[0062] It should be noted that since the rivet band 5 is often naturally curved when it is statically placed, it is necessary to pull the rivet band 5 from both ends in order to flatten it. At the same time, the pressing block 321 is used to further flatten the rivet band 5. However, when the tension on both sides of the rivet band 5 is uneven, and when the actuator 11 is riveting, it is easy to directly impact the rivet band 5, causing the rivet band 5 to pull back. This will affect the positioning function of the rivet band 5 on the rivet, and ultimately affect the riveting effect.

[0063] Therefore, in one embodiment, the pressing mechanism 302 includes a pressing block 321 movably disposed on the base 301, and a driving member 322 for driving the pressing block 321 to press against the second conveyor channel; The pressing block 321 is used to press against the rivet strip 5 in the second conveyor channel and prevent the rivet strip 5 from retracting.

[0064] Therefore, the pressure block 321 can effectively prevent the rivet band 5 from retracting, thereby improving the stability and reliability of the riveting process of the riveting device.

[0065] In one embodiment, the drive member 322 is configured as an elastic member (e.g., a spring, elastic rubber, etc.), and the pressing block 321 continuously applies an elastic force. The abutting end of the pressing block 321 includes a first side a and a second side b disposed opposite to each other. The first side a faces the entrance of the second conveyor channel, and the second side b faces away from the entrance of the second conveyor channel; The first side a is inclined toward the second conveyor channel to form a guide surface in order to avoid obstructing the movement of the rivet band 5; The second side b is positioned perpendicular to or away from the second conveyor channel, forming a stop portion of the pressure block 321 to restrict the reverse movement of the rivet band 5.

[0066] The pressing mechanism 302 ensures the stability of the rivet band 5 position during the riveting process and prevents the rivet band 5 from retracting under the impact of the actuator rod 11, thereby increasing the stability of the riveting process. Simultaneously, the inclined arrangement of the first side a prevents the pressing block 321 of the pressing mechanism 302 from excessively obstructing the normal movement of the rivet band.

[0067] In one embodiment, the nail feeding assembly 31 includes a rotatably disposed nail feeding disk 311 and a fixedly disposed guide tube 312; One end of the guide tube 312 is set to correspond to the nail feeding plate 311, and the other end is set to face the nail limiting component 32; The nail feeder 311 can be equipped with a rivet band 5, and the rivet band 5 is continuously supplied to the nail limiting assembly 32 through the guide tube 312.

[0068] Furthermore, the rivet feeder 311 can pull the rivet band 5 to ensure that the rivet band 5 can be placed flat between the tapping pipe and the actuator 11.

[0069] In one embodiment, the pulling force of the nail feeder 311 decreases synchronously as the weight of the loaded rivet belt 5 decreases.

[0070] In one embodiment, the pulling force of the nail feed disc 311 and the driving force of the toothed nail drive wheel 332 are balanced and greater than a second threshold. The setting of the second threshold allows the rivet band 5 to be flattened or straightened under the action of the nail feed disc 311 and the toothed nail drive wheel 332.

[0071] Obviously, those skilled in the art can make various modifications and variations to this application without departing from the spirit and scope of this application. Therefore, if such modifications and variations fall within the scope of the claims of this application and their equivalents, this application also intends to include such modifications and variations.

Claims

1. A rivet mechanism for a riveting device, characterized in that, include: An actuator, including an actuator rod and a drive assembly that is drively connected to the actuator rod; A rivet nose mechanism is provided corresponding to the end of the actuator rod; The nail feeding mechanism includes a nail feeding assembly, a nail limiting assembly, and a transmission assembly; The pin limiting assembly is disposed between the rivet nose mechanism and the actuator, and the pin supply assembly and the transmission assembly are located on both sides of the pin limiting assembly; A rivet band is provided between the rivet supply assembly and the transmission assembly, and the rivet band passes through the rivet limiting assembly. The transmission assembly includes a first conveyor channel for receiving the rivet belt. One side of the first conveyor channel is configured as a toothed drive wheel for driving the rivet belt to move within the first conveyor channel; the other side is configured as a guide block for limiting the movement path of the rivet belt. The exit of the first conveyor channel is provided with a first baffle; the first baffle includes a peeling portion extending toward the first conveyor channel and a guide portion extending away from the first conveyor channel; the guide portion guides the rivet strip outward; A mounting plate is provided on the side of the guide block opposite to the first conveyor channel, and the height of the mounting plate exceeds the top of the guide block; The peeling portion of the first baffle is spaced apart from the top of the guide block and forms a first tape outlet, and a tape-blocking space is formed between the first baffle and the mounting plate; The nail feeding mechanism also includes a tape cutting assembly disposed above the transmission assembly; The tape cutting assembly includes a tape feed port, a movable cutter disposed at the upper end of the tape feed port, and a tape stopper disposed at the lower end of the tape feed port; wherein, the blocking surface of the tape stopper is guided to the lower end of the tape feed port. The distance between the tape feed opening and the first baffle is less than a first threshold, and the guide portion of the first baffle guides the tape stop plate; the first threshold is positively correlated with the stiffness of the rivet tape; The first threshold is set to 5~10cm; The toothed drive wheel is provided with two rows of circumferentially arranged toothed pins. The distance between the two rows of toothed pins is greater than the width of the guide block, and the guide block is staggered relative to the two rows of toothed pins.

2. The rivet mechanism for a riveting device as described in claim 1, characterized in that, The rivet nose mechanism includes a tapping channel for restricting the movement posture of the rivet; The pin-limiting assembly includes a base, and a pressing mechanism and a positioning mechanism disposed on the base; The base is provided with a second conveyor channel, and the second conveyor channel extends through the top of the tapping pipe opening; The positioning mechanism includes a rotatably mounted positioning rod, a first limiting block and a second limiting block that restrict the rotation of the positioning rod, and a sensor that detects the presence of the positioning rod. The positioning rod includes one end configured as a rotating end and rotatably mounted on the base, and the other end configured as a positioning end and extending into the second conveyor channel; An extension portion is provided on one side of the positioning rod, and the first limiting block and the second limiting block are provided on both sides of the extension portion, so that the positioning rod can switch between a first state and a second state; and the presence sensor is provided at the end of the extension portion; when the positioning rod is in the first state, the positioning end extends to the space between the tapping pipe and the actuator rod to guide the rivet on the rivet band. The rivets on the rivet band can push the positioning rod, causing the positioning rod to switch from a first state to a second state; When the positioning rod is in the second state, the positioning end positions the rivet on the rivet band between the tapping pipe and the actuator rod, and the extension of the positioning rod triggers the presence sensor.

3. A rivet mechanism for a riveting device as described in claim 2, characterized in that: The pressing mechanism includes a pressing block movably disposed on the base, and a driving member that drives the pressing block to press against the second conveyor channel; The pressing block is used to press against the rivet strip in the second conveyor channel and prevent the rivet strip from retracting.

4. A rivet mechanism for a riveting device as described in claim 3, characterized in that, The driving component is configured as an elastic component, which continuously applies an elastic force to the pressing block. The abutting end of the pressing block includes a first side and a second side disposed opposite to each other. The first side faces the entrance of the second conveyor channel, and the second side faces away from the entrance of the second conveyor channel; The first side is inclined toward the second conveyor channel to avoid obstructing the movement of the rivet band; The second side is positioned perpendicular to or away from the second conveyor channel to restrict the reverse movement of the rivet band.

5. A rivet mechanism for a riveting device as described in claim 1, characterized in that, The nail feeding assembly includes a rotatably mounted nail feeding disc and a fixedly mounted guide tube; One end of the guide tube is positioned corresponding to the nail feeding disc, and the other end is positioned towards the nail limiting component; The nail feeder can be equipped with a rivet band, and the rivet band is continuously supplied to the nail limiting assembly through the guide tube.

6. A riveting device, characterized in that: The device includes a base and a C-shaped clamp fixedly disposed on the base. One end of the C-shaped clamp is provided with a lower mold, and the other end is provided with a riveting mechanism as described in any one of claims 1 to 5.

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