A limit mechanism for a riveting device

Abstract

This application provides a nail-limiting mechanism for a riveting device, belonging to the field of riveting device technology. Addressing the problem of poor nail-feeding stability in existing riveting devices using rivet strips, this application provides a nail-limiting mechanism for a riveting device, including a base, a front-end conveyor channel, and a positioning component disposed on the base. The positioning component includes a positioning rod rotatably disposed on the base and a presence sensor. The positioning rod can switch between a first state and a second state. In the first state, the positioning rod extends into the front-end conveyor channel to guide rivets on the rivet strip. Rivets on the rivet strip can push the positioning rod, causing it to switch from the first state to the second state. In the second state, the positioning rod blocks and positions the rivets on the rivet strip, and triggers the presence sensor. This application achieves rivet positioning through the cooperation of the front-end conveyor channel and the positioning rod, and through the cooperation of the positioning rod and the presence sensor, it avoids missed or dry riveting, thereby improving the stability of the nail-feeding process.

Description

Technical Field

[0001] This application relates to the field of riveting device technology, and in particular to a pin limiting mechanism for riveting devices. 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 can easily damage 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 a rivet belt for rivet feeding can better control the rivet transmission posture and cause less damage to the rivet nose mechanism, the rivet belt feeding process is less stable and prone to problems such as misalignment or missing rivets. Utility Model Content

[0006] The purpose of this application is to solve the problem of poor stability in the rivet feeding process when using a rivet belt in existing riveting devices. Therefore, this application provides a rivet limiting mechanism for a riveting device, which achieves rivet positioning by cooperating with a positioning rod through a front-end conveyor channel, and avoids missed or dry rivet feeding by cooperating with a presence sensor through the positioning rod, thereby improving the stability of the rivet feeding process.

[0007] This application provides a pin limiting mechanism for a riveting device. The riveting device includes an actuator, a rivet nose mechanism, a pin feeding mechanism, and a transmission mechanism. A rivet band is provided between the pin feeding mechanism and the transmission mechanism, and the rivet band passes through the space between the actuator and the rivet nose mechanism.

[0008] The pin limiting mechanism is used to be disposed between the actuator and the rivet nose mechanism, and the pin limiting mechanism includes a base, the base is provided with a front end conveyor channel for the rivet band to pass through, the actuator can extend into the front end conveyor channel and feed the rivets on the rivet band one by one into the rivet nose mechanism;

[0009] The pin limiting mechanism further includes a positioning component disposed on the base. The positioning component includes a positioning rod rotatably disposed on the base and a presence sensor. The positioning rod can switch between a first state and a second state.

[0010] When the positioning rod is in the first state, the positioning rod extends into the front end conveyor channel to guide the rivets on the rivet band.

[0011] 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;

[0012] When the positioning rod is in the second state, the positioning rod blocks and positions the rivets on the rivet band, and the positioning rod triggers the presence sensor.

[0013] By adopting the above technical solution, the rivets on the rivet belt can be accurately positioned under the action of the positioning rod of the positioning component, that is, positioned at the riveting position of the actuator and the rivet nose mechanism in the front conveyor channel, thereby improving the accuracy and stability of the rivet feeding process, and ensuring the accuracy and stability of the riveting process. On the other hand, the positioning rod of the positioning component, in conjunction with the presence sensor, can prevent rivets from being missed in the rivet belt, or prevent the actuator from firing dry when there are missing rivets in the rivet belt, further improving the stability of the rivet feeding process.

[0014] In some embodiments, the positioning component further includes a first limiting block and a second limiting block that restrict the rotation of the positioning rod, wherein the first limiting block causes the positioning rod to be in the first state and the second limiting block causes the positioning rod to be in the second state;

[0015] One end of the positioning rod is configured as a rotating end and is rotatably mounted on the base, while the other end is configured as a positioning end and extends into the front conveyor channel;

[0016] The positioning rod has an extension portion extending from one side, the first limiting block and the second limiting block are disposed on both sides of the extension portion, and the presence sensor is disposed at the end of the extension portion.

[0017] By adopting the above technical solution, the stability of the positioning rod rotation is improved, enabling it to be accurately positioned in the first or second state, thereby improving the positioning stability of the positioning rod for the rivet and the stability of its cooperation with the presence sensor.

[0018] In some embodiments, the pin limiting mechanism further includes a pressing component disposed on the base, the pressing component including a pressing block movably disposed on the base, and a driving member for driving the pressing block to press against the front end conveyor channel;

[0019] The pressing block is used to press against the rivet strip in the front conveyor channel and prevent the rivet strip from retracting.

[0020] By adopting the above technical solution, the pressing component 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, thereby improving the stability of the riveting process.

[0021] In some embodiments, the abutting end of the pressing block includes a first side and a second side disposed opposite to each other;

[0022] The first side faces the inlet of the front conveyor channel, and the second side faces away from the inlet of the front conveyor channel;

[0023] The first side is inclined toward the front conveyor channel to form a guide surface to avoid obstructing the movement of the rivet band;

[0024] The second side is positioned perpendicular to or away from the front feed channel, forming a check portion of the pressure block to restrict the reverse movement of the rivet band.

[0025] By adopting the above technical solution, the inclined setting of the first side avoids the pressing block of the pressing component from excessively hindering the normal movement of the rivet strip.

[0026] In some embodiments, the drive member is configured as an elastic member and continuously applies an elastic force to the pressing block.

[0027] In some embodiments, the drive element is configured as a spring.

[0028] In some embodiments, the base includes a first base portion and a second base portion spaced apart, the positioning component is disposed on the first base portion, the pressing component is disposed on the second base portion, and the bottom of the first base portion and the second base portion are formed with the front end conveyor channel of a first length.

[0029] In some embodiments, the first base portion is provided with a limiting groove adapted to the rotation path of the positioning rod to limit the positioning rod from deviating from its rotation path. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a riveting device according to an embodiment of this application;

[0031] 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;

[0032] Figure 3 This is a partial structural schematic diagram of a riveting device according to an embodiment of this application;

[0033] Figure 4 This is a partial structural schematic diagram of the transmission mechanism for a riveting device in an embodiment of this application, during the process of conveying the rivet belt.

[0034] Figure 5 This is a partial structural diagram of a transmission mechanism for a riveting device according to an embodiment of this application, without the rivet band.

[0035] Figure 6 This is a schematic diagram of the structure of a tape cutting mechanism for a riveting device according to an embodiment of this application;

[0036] Figure 7 This is a schematic diagram of the internal structure of a pin-limiting mechanism for a riveting device according to an embodiment of this application.

[0037] Explanation of reference numerals in the attached figures:

[0038] 1. Riveting module;

[0039] 10. Implementing agency;

[0040] 11. Actuating lever; 12. Drive assembly;

[0041] 20. Nose-riving mechanism;

[0042] 31. Nail supply mechanism;

[0043] 311. Nail feeder; 312. Guide tube;

[0044] 32. Nail-limiting mechanism;

[0045] 301. Base;

[0046] 302. Pressing component; 321. Pressing block; 322. Driving component; a. First side; b. Second side;

[0047] 303. Positioning component; 323. Positioning rod; 324. First limiting block; 325. Second limiting block; 326. Presence sensor; 327. Extension;

[0048] 33. Transmission mechanism;

[0049] 330. Housing; 331. Rear end 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;

[0050] 34. Cutting mechanism;

[0051] 341. Belt feed inlet; 342. Belt stop plate; 343. Movable cutter;

[0052] 2. Base; 3. C-clamps; 4. Lower mold; 5. Rivet strap. Detailed Implementation

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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.

[0057] This mechanism is applied to riveting devices. To make the purpose, technical solution and advantages of this application clearer, the embodiments of this application will be described in further detail below in conjunction with its application environment (i.e., in conjunction with riveting devices) and the accompanying drawings.

[0058] 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.

[0059] like Figure 1 As shown, this application embodiment provides a riveting device, including a base 2, a C-type clamp 3 fixedly disposed on the base 2, and a riveting module 1 for the riveting device; wherein, one end of the C-type clamp 3 is provided with a lower mold 4, and the other end is provided with the riveting module 1.

[0060] During the riveting process, the parts to be connected are first placed between the lower mold 4 and the riveting module 1, and then the riveting process is completed through the riveting module 1.

[0061] Please see Figures 2 to 7 , Figure 2 This is a schematic diagram of the structure of a riveting device for removing the base 2 according to an embodiment of this application. Figure 3 This is a partial structural diagram of a riveting device according to an embodiment of this application. Figure 4 This is a partial structural diagram of the transmission mechanism 33 for a riveting device in an embodiment of this application, showing the process of conveying the rivet belt. Figure 5 This is a partial structural diagram of a transmission mechanism 33 for a riveting device according to an embodiment of this application, without the rivet band. Figure 6 This is a schematic diagram of the structure of a tape cutting mechanism 34 for a riveting device according to an embodiment of this application. Figure 7 This is a schematic diagram of the internal structure of a pin-limiting mechanism 32 for a riveting device according to an embodiment of this application.

[0062] like Figures 2-7 As shown in the figure, a riveting device according to an embodiment of this application includes a riveting module 1 comprising:

[0063] The actuator 10 preferably includes an actuator rod 11 and a drive assembly 12 that is pulsatorically connected to the actuator rod 11;

[0064] The rivet nose mechanism 20 preferably includes a tapping channel for restricting the movement posture of the rivet, and is provided corresponding to the end of the actuator 11;

[0065] Nail feeding mechanism 31 and transmission mechanism 33.

[0066] The rivet feeding mechanism 31 and the transmission mechanism 33 are used to set the rivet band 5, and the rivet band 5 passes between the actuator 10 and the rivet nose mechanism 20.

[0067] It is understandable that one end of the rivet band 5 is connected to the rivet feeding mechanism 31, for example, wrapped around the rivet feeding mechanism 31, and the other end is connected to the transmission mechanism 33. The transmission mechanism 33 (connected to the driving component) drives the rivet band 5 to pass between the actuator 10 and the rivet nose mechanism 20. Furthermore, the actuator 10 can feed the rivets on the rivet band one by one into the rivet nose mechanism 20 to achieve riveting.

[0068] In one embodiment, the transmission mechanism 33 includes a rear-end conveyor channel 331 for accommodating the rivet belt 5. A toothed drive wheel 332 is provided on one side of the rear-end conveyor channel 331 to drive the rivet belt 5 to move within the rear-end conveyor channel 331; a guide block 333 is provided on the other side to restrict the movement path of the rivet belt 5.

[0069] The outlet of the rear conveyor channel 331 is provided with a first baffle 334; the first baffle 334 includes a peeling part 335 extending toward the rear conveyor channel 331, the peeling part 335 is used to guide the rivet belt 5 to peel off the tooth of the tooth drive wheel 332.

[0070] In one embodiment, the first baffle 334 further includes a guide portion 336 extending away from the rear end conveyor channel 331; the guide portion 336 guides the rivet band 5 outward.

[0071] 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.

[0072] Furthermore, the strip-shaped carrier of the rivet band 5 can be a plastic strip, and the rivet band 5 is typically 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.

[0073] Therefore, in the rear 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 rear conveyor channel 331.

[0074] However, it should be noted that when the rivet belt 5 is transmitted to the outlet of the rear conveyor channel 331, the positioning hole of the rivet belt 5 and the toothed nail 339 may become stuck and difficult to separate. This causes the toothed nail drive wheel 332 to drive the rivet belt 5 to rotate further, which causes the rivet belt 5 to jam the transmission mechanism 33 and affect the stability of the transmission mechanism 33.

[0075] 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 and transmission effect of the rivet band 5, and ultimately affecting the riveting quality of the rivet.

[0076] Therefore, in this embodiment, a first baffle 334 is provided at the outlet of the rear conveyor channel 331. The peeling portion 335 of the first baffle 334 can guide the rivet belt 5 to peel off from the toothed nail 339 of the toothed drive wheel 332, thereby preventing the rivet belt 5 from getting stuck with the toothed nail 339, which would cause the rivet belt 5 to further rotate with the toothed drive wheel 332 and cause the rivet belt 5 and the toothed drive wheel 332 to jam. Furthermore, 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 mechanism 33 in transmitting the rivet belt 5.

[0077] In one embodiment, a mounting plate 337 is provided on the side of the guide block 333 away from the rear conveyor channel 331, and the height of the mounting plate 337 exceeds the top of the guide block 333.

[0078] 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.

[0079] 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 mechanism 33 against risks.

[0080] 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.

[0081] This method 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 rear conveyor channel 331 of the rivet belt 5, thereby affecting the transmission efficiency of the tooth drive wheel 332.

[0082] 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, that is, embedded between the two rows of toothed pins 339, so that the rivet belt 5 cannot detach from the toothed drive wheel 332, thus maximizing the reliability and stability of the transmission process.

[0083] In one embodiment, the transmission mechanism 33 further includes a housing 330, the opposite ends of which are provided with openings adapted to the rear conveyor channel 331, and a mounting plate 337 is hinged to one side of the housing 330.

[0084] The housing 330 and the mounting plate 337 form an installation space. The toothed drive wheel 332 and the guide block 333 are both located in the installation space. The toothed drive wheel 332 is fixedly installed to the housing 330, and the guide block 333 is fixedly installed to the mounting plate 337. This allows for quick operation by opening the mounting plate 337 when there is a problem with the rivet belt 5 in the rear conveyor channel 331 or when the rivet belt 5 needs to be replaced, thus improving the convenience of maintenance and replacement.

[0085] In one embodiment, the mounting plate 337 is locked to the housing 330 by a locking element (e.g., a bolt), thereby improving the positional stability of the guide block 333 relative to the toothed drive wheel 332, i.e., the stability of the rear conveyor channel 331, and ensuring the stability of the riveting process.

[0086] It should be noted that as the length of the rivet band 5 increases, its haphazard placement can interfere with normal riveting operations.

[0087] Therefore, in one embodiment, the riveting device is further provided with a strip cutting mechanism 34.

[0088] The cutting mechanism 34 is located above the outlet of the transmission mechanism 33, so as to cut the empty rivet strip 5 transmitted by the transmission mechanism 33 in a timely manner, and avoid the excessively long rivet strip 5 from interfering with the normal riveting work.

[0089] The tape cutting mechanism 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 stop plate 342 disposed at the lower end of the tape feed port 341; wherein, the blocking surface of the tape stop plate 342 guides the lower end of the tape feed port 341.

[0090] In one embodiment, the distance between the conveyor belt opening 341 and the outlet of the transmission mechanism 33 is less than a first threshold, which is positively correlated with the stiffness of the rivet belt 5. Preferably, the first threshold is set to 5-10 cm.

[0091] When the transmission mechanism 33 includes the first baffle 334, that is, 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.

[0092] It should be noted that when the movable cutter 343 of the cutting mechanism 34 cuts off more than the rivet strip 5, the rivet strip 5 may detach from the feed opening 341 under its own gravity, causing the cutting mechanism 34 to fail. Therefore, the distance between the feed opening 341 and the first baffle 334 is made less than a first threshold value, so that the rivet strip 5 can be supported within the feed opening 341 by its own rigidity, maintaining the stability of the cutting mechanism 34.

[0093] 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.

[0094] Therefore, 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 mechanism 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 mechanism 34.

[0095] In one embodiment, the cutting edge of the movable cutter 343 is inclined relative to the conveyor opening 341, that is, the movable cutter 343 cuts into the rivet band 5 in a point or line contact manner, thereby reducing cutting resistance, improving cutting efficiency, and extending tool life.

[0096] In one embodiment, the tape cutting mechanism 34 further includes a mounting base 340, the opposite ends of which are formed with a tape feeding port 341.

[0097] A guide groove is formed above the mounting base 340, and the movable cutter 343 is disposed in the guide groove to improve its movement stability.

[0098] A baffle plate 342 extends downward from below the mounting base 340.

[0099] In one embodiment, the movable cutter 343 is connected to a cylinder, and the movable cutter 343 is detachably connected to the piston rod of the cylinder. Using a cylinder to drive the movable cutter 343 results in a smaller size, lighter weight, and easier installation.

[0100] Furthermore, the mounting base 340 is connected to the cylinder.

[0101] It should be noted that although the displacement of the rivet band 5 can be controlled by the transmission mechanism 33, control errors and errors in the rivet band 5 itself are unavoidable, which may cause misalignment and damage to the rivet nose mechanism 20. At the same time, there may also be phenomena such as missed riveting and empty riveting, which will affect the stability of the riveting process.

[0102] Therefore, in one embodiment, the riveting device is provided with a pin limiting mechanism 32, which is disposed between the actuator 10 and the rivet nose mechanism 20.

[0103] The rivet limiting mechanism 32 includes a base 301, which is provided with a front-end conveyor channel for the rivet band to pass through. The actuator 10 can extend into the front-end conveyor channel and feed the rivets on the rivet band one by one into the rivet nose mechanism 20.

[0104] Understandably, at this time, the rivet feeding mechanism 31 and the transmission mechanism 33 are located on both sides of the rivet limiting mechanism 32, so that the rivet belt 5 can pass through the front end conveyor channel and the rivets on the rivet belt 5 pass through the riveting position one by one.

[0105] The pin limiting mechanism 32 also includes a positioning component 303 disposed on the base 301. The positioning component 303 includes a positioning rod 323 rotatably disposed on the base 301, and a sensor 326 for detecting the presence of the positioning rod 323.

[0106] Positioning rod 323 can switch between the first state and the second state.

[0107] When the positioning rod 323 is in the first state, the positioning rod 323 extends into the front conveyor channel to guide the rivets on the rivet belt 5.

[0108] 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;

[0109] When the positioning rod 323 is in the second state, the positioning rod 323 blocks and positions the rivet on the rivet band 5, and the positioning rod 323 triggers the presence sensor 326, thereby determining whether there is a rivet and whether the rivet position is accurate by whether it is triggered at the riveting position, thus avoiding misalignment, missed riveting or empty riveting.

[0110] The sensor 326 may be, but is not limited to, a micro switch, a piezoelectric sensor, a strain sensor, an infrared sensor, a microwave sensor, an ultrasonic sensor, etc., as long as it can trigger the positioning rod 323 to move to the set position, thereby providing a basis for those skilled in the art to control the actuator 10, transmission mechanism 33, etc. of the riveting device.

[0111] In one embodiment, the positioning component 303 further includes a first limiting block 324 and a second limiting block 325 that restrict the rotation of the positioning rod 323. The first limiting block 324 causes the positioning rod 323 to be in a first state, and the second limiting block 325 causes the positioning rod 323 to be in a second state.

[0112] One end of the positioning rod 323 is configured as a rotating end and is rotatably mounted on the base 301, while the other end is configured as a positioning end and extends into the front conveyor channel.

[0113] An extension portion 327 is provided on one side of the positioning rod 323. A first limiting block 324 and a second limiting block 325 are provided on both sides of the extension portion 327, and a sensor 326 is provided at the end of the extension portion 327.

[0114] Furthermore, when the actuator 10 is equipped with an actuator rod 11 and the rivet nose mechanism 20 is equipped with a tapping channel, the front conveyor channel passes through the top of the tapping pipe opening, and the actuator rod 11 drives the rivet on the rivet band 5 located in the front conveyor channel into the tapping channel.

[0115] 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.

[0116] 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;

[0117] 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.

[0118] Thus, the rivets on the rivet band 5 can be accurately positioned between the tapping channel and the actuator 11 under the limiting action of the positioning component 303, and are directly opposite the actuator 11 and the tapping channel, so as to ensure the accuracy and reliability of the riveting process.

[0119] Furthermore, the positioning rod 323 of the positioning component 303 can prevent the rivet strip 5 carrying rivets from passing through the front conveyor channel, thereby preventing rivets on the rivet strip 5 from being missed. Further, when the rivet strip 5 is missing a rivet, the positioning rod 323 of the positioning component 303 cannot trigger the presence sensor 326, requiring the transmission mechanism 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.

[0120] It should be noted that the rivet band 5 is prone to plastic deformation, which causes it to naturally bend when statically placed, making it difficult to place it flat and accurately on the rivet nose mechanism 20 and the actuator 10. Therefore, in order to flatten the rivet band 5, it is necessary to pull the rivet band 5 from both ends through the rivet feeding mechanism 31 and the transmission mechanism 33. However, when the tension on both sides of the rivet band 5 is uneven, and when riveting is performed on the actuator 11, the rivet band 5 is easily directly impacted, causing the rivet band 5 to pull back. This affects the positioning function of the rivet band 5 on the rivet, ultimately affecting the riveting effect.

[0121] Therefore, in one embodiment, the nail limiting mechanism 32 further includes a pressing component 302 disposed on the base 301.

[0122] The pressing assembly 302 includes a pressing block 321 movably disposed on the base 301, and a driving member 322 that drives the pressing block 321 to press against the front conveyor channel;

[0123] The pressing block 321 is used to press against the rivet strip 5 in the front conveyor channel and prevent the rivet strip 5 from retracting.

[0124] Therefore, by pressing the block 321, the rivet band 5 can be further flattened on the one hand, and the rivet band 5 can be effectively prevented from shrinking back on the other hand, so as to improve the stability and reliability of the riveting process of the riveting device.

[0125] In one embodiment, the abutting end of the pressing block 321 includes a first side a and a second side b disposed opposite to each other;

[0126] The first side a faces the entrance of the front conveyor channel, and the second side b faces away from the entrance of the front conveyor channel.

[0127] The first side a is inclined toward the front conveyor channel to form a guide surface to avoid obstructing the movement of the rivet belt 5;

[0128] The second side b is positioned perpendicular to or away from the front conveyor channel, forming a stop block 321 to restrict the reverse movement of the rivet band 5.

[0129] The pressing component 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 component 302 from excessively obstructing the normal movement of the rivet band.

[0130] In one embodiment, the drive member 322 is configured as an elastic member (e.g., a spring, elastic rubber, etc.) and continuously applies an elastic force to the pressure block 321.

[0131] Preferably, the driving element 322 is a spring.

[0132] In one embodiment, the base 301 includes a first base portion and a second base portion spaced apart. A positioning component 303 is disposed on the first base portion, and a pressing component 302 is disposed on the second base portion. A front end conveying channel of a first length is formed at the bottom of the first base portion and the second base portion, thereby improving the flatness of the rivet band 5 through the front end conveying channel of the first length.

[0133] Preferably, the first base portion is provided with a limiting groove adapted to the rotation path of the positioning rod 323, so as to limit the positioning rod 323 from deviating from its rotation path.

[0134] In one embodiment, the nail feeding mechanism 31 includes a rotatably disposed nail feeding disk 311 and a fixedly disposed guide tube 312;

[0135] 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 mechanism 32;

[0136] The nail feeder 311 can be equipped with a rivet band 5, and the rivet band 5 is continuously supplied to the nail limiting mechanism 32 through the guide tube 312.

[0137] 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.

[0138] 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 pin-limiting mechanism for a riveting device, the riveting device comprising an actuating mechanism, a rivet nose mechanism, a pin-feeding mechanism, and a transmission mechanism, wherein a rivet band is disposed between the pin-feeding mechanism and the transmission mechanism, and the rivet band passes through the space between the actuating mechanism and the rivet nose mechanism; characterized in that, The pin limiting mechanism is used to be disposed between the actuator and the rivet nose mechanism, and the pin limiting mechanism includes a base, the base is provided with a front end conveyor channel for the rivet band to pass through, the actuator can extend into the front end conveyor channel and feed the rivets on the rivet band one by one into the rivet nose mechanism; The pin limiting mechanism further includes a positioning component disposed on the base. The positioning component includes a positioning rod rotatably disposed on the base and a presence sensor. The positioning rod can switch between a first state and a second state. When the positioning rod is in the first state, the positioning rod extends into the front end conveyor channel 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 rod blocks and positions the rivets on the rivet band, and the positioning rod triggers the presence sensor.

2. The pin-limiting mechanism for a riveting device as described in claim 1, characterized in that: The positioning component further includes a first limiting block and a second limiting block that restrict the rotation of the positioning rod. The first limiting block causes the positioning rod to be in the first state, and the second limiting block causes the positioning rod to be in the second state. One end of the positioning rod is configured as a rotating end and is rotatably mounted on the base, while the other end is configured as a positioning end and extends into the front conveyor channel; The positioning rod has an extension portion extending from one side, the first limiting block and the second limiting block are disposed on both sides of the extension portion, and the presence sensor is disposed at the end of the extension portion.

3. The pin-limiting mechanism for a riveting device as described in claim 1, characterized in that: The pin limiting mechanism further includes a pressing component disposed on the base, the pressing component including a pressing block movably disposed on the base, and a driving member for driving the pressing block to press against the front end conveyor channel; The pressing block is used to press against the rivet strip in the front conveyor channel and prevent the rivet strip from retracting.

4. A pin-limiting mechanism for a riveting device as described in claim 3, characterized in that, 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 inlet of the front conveyor channel, and the second side faces away from the inlet of the front conveyor channel; The first side is inclined toward the front conveyor channel to form a guide surface to avoid obstructing the movement of the rivet band; The second side is positioned perpendicular to or away from the front feed channel, forming a check portion of the pressure block to restrict the reverse movement of the rivet band.

5. A pin-limiting mechanism for a riveting device as described in claim 3, characterized in that, The driving component is configured as an elastic component and continuously applies an elastic force to the pressing block.

6. A pin-limiting mechanism for a riveting device as described in claim 5, characterized in that, The driving component is a spring.

7. A pin-limiting mechanism for a riveting device as described in any one of claims 3-6, characterized in that, The base includes a first base portion and a second base portion spaced apart. The positioning component is disposed on the first base portion, and the pressing component is disposed on the second base portion. The bottom of the first base portion and the second base portion are formed with the front end conveyor channel of a first length.

8. A pin-limiting mechanism for a riveting device as described in claim 7, characterized in that, The first base portion is provided with a limiting groove adapted to the rotation path of the positioning rod to limit the positioning rod from deviating from its rotation path.

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