Rivet feeding mechanism and riveting gun

Abstract

The utility model discloses a rivet feeding mechanism and a riveting gun. The rivet feeding mechanism comprises a fixed frame, a movable frame, an upper chuck, a lower chuck and a connecting rod, the fixing frame is suitable for being assembled on a riveting gun body, and a guide groove is formed in the fixing frame. The movable frame is arranged on the fixed frame in a sliding mode, and a driving mechanism used for driving the movable frame to move in the axial direction of the riveting gun body is arranged on the fixed frame. Each of the upper chuck and the lower chuck comprises a clamping end and a tooth-shaped end which are oppositely arranged; the tooth-shaped ends of the upper chuck and the lower chuck are meshed with each other and are rotationally connected to the movable frame respectively; one end of the connecting rod is fixed on the upper chuck, and the other end of the connecting rod is arranged in the guide groove; and the guide groove is suitable for guiding and limiting the second end of the connecting rod, so that the clamping ends of the upper chuck and the lower chuck are opened and closed under the driving of the driving mechanism. A spring is not needed, the structure of the nailing mechanism is optimized, the stability of the nailing mechanism is improved, the service life of the nailing mechanism is prolonged, and the use cost is effectively reduced.

Description

Technical Field

[0001] This utility model relates to the field of riveting equipment technology, specifically to a riveting mechanism and a rivet gun. Background Technology

[0002] Rivet guns are used for fastening and riveting various metal sheets, pipes, and other materials in the manufacturing industry. By incorporating a rivet insertion mechanism into the rivet gun, manual insertion of the rivet into the nozzle is eliminated, thus improving work efficiency.

[0003] In the prior art, the feeding mechanism includes upper and lower clamps for holding rivets, and the feeding mechanism often uses springs to achieve the closure of the upper and lower clamps. Specifically, Chinese patent document CN208146850U describes a rivet feeding mechanism for an automatic rivet machine. In this document, an elastic element drives the upper swing arm (i.e., the upper clamp) and the lower swing arm (i.e., the lower clamp) to move closer to each other.

[0004] However, elastic components like springs are prone to fatigue failure due to frequent expansion and contraction over time, which can lead to the upper and lower chucks failing to close effectively, thus preventing them from holding the rivets securely. Therefore, existing feeding mechanisms have a short service life and high costs. Utility Model Content

[0005] This utility model proposes a rivet loading mechanism and a rivet gun to solve the technical problem that the existing loading mechanism drives the upper and lower clamps to close by an elastic element, which has a short service life and is prone to fatigue failure.

[0006] On the one hand, the present utility model discloses an upper nailing mechanism, which includes a fixed frame, a movable frame, an upper clamp, a lower clamp, and a connecting rod;

[0007] The fixing bracket is adapted to be mounted on the rivet gun body, and the fixing bracket is provided with a guide groove;

[0008] The movable frame is slidably mounted on the fixed frame, and the fixed frame is provided with a drive mechanism for driving the movable frame to move along the axial direction of the rivet gun body;

[0009] Both the upper chuck and the lower chuck include a clamping end and a toothed end arranged opposite to each other; the toothed ends of the upper chuck and the lower chuck mesh with each other and are rotatably connected to the movable frame respectively;

[0010] The first end of the connecting rod is fixed to the upper clamp, and the second end of the connecting rod is placed in the guide groove. The guide groove is adapted to guide and limit the second end of the connecting rod, so that the clamping ends of the upper and lower clamps open and close under the drive of the drive mechanism. The second end of the connecting rod is driven to move within the guide groove by the drive mechanism to realize the opening and closing of the upper and lower clamps. This eliminates the need for a spring, optimizes the structure of the upper nailing mechanism, improves its stability and service life, and effectively reduces operating costs.

[0011] Furthermore, a rotating component is rotatably provided at the second end of the connecting rod, and the rotating component is placed within the guide groove; the guide groove is adapted to guide and limit the rotating component. This design allows the second end of the connecting rod to move smoothly within the guide groove via the rotating component.

[0012] Furthermore, the guide groove includes a first section, a second section, and a third section distributed sequentially along the axial direction of the rivet gun body;

[0013] The first segment, the second segment, and the third segment are all on the same plane; the first segment and the third segment are arranged in parallel and both extend along the axial direction of the rivet gun body;

[0014] The two ends of the second segment are connected to the first segment and the third segment, respectively;

[0015] The angle between the first segment and the second segment is an obtuse angle. This scheme is used to achieve the opening and closing of the upper and lower clamps.

[0016] Furthermore, the fixing frame includes a mounting bracket, a slider, and a guide plate;

[0017] The mounting bracket is adapted to be mounted on the rivet gun body, and the drive mechanism is mounted on the mounting bracket;

[0018] Both the slider and the guide plate are mounted on the mounting frame; the slider is located between the guide plate and the mounting frame;

[0019] The movable frame is slidably disposed on the slide groove of the slider and located between the slider and the guide plate; the connecting rod is placed between the guide plate and the movable frame;

[0020] The guide groove is formed on the guide plate. This design allows the movable frame to slide smoothly.

[0021] Furthermore, the movable frame includes a sliding rod and a limiting cover plate;

[0022] The slide bar is slidably connected to the slide groove of the slider, and the slide bar is located between the slider and the connecting rod;

[0023] The limiting cover plate is bolted to the slide bar, and the limiting cover plate is adapted to prevent the slider from disengaging from the slide bar;

[0024] The mounting bracket has a maintenance hole adapted to expose the bolt. This design facilitates maintenance of the connection between the limiting cover and the sliding rod.

[0025] Furthermore, the movable frame also includes a connecting frame;

[0026] The connecting frame is fixed to the end of the slide rod away from the fixed frame; the connecting frame is provided with a connecting shaft; the toothed ends of the upper clamp and the lower clamp are respectively rotatably mounted on the slide rod through the corresponding connecting shafts;

[0027] The drive mechanism is adapted to drive the connecting frame to move along the axial direction of the rivet gun body. The above scheme allows the upper and lower chucks to be mounted on the slide rod via the connecting frame.

[0028] Furthermore, when the clamping ends of the upper clamp and the lower clamp are closed, they form a receiving cavity.

[0029] The receiving cavity is open at one end and closed at the other end; the receiving cavity is adapted to receive the head of the rivet;

[0030] The upper clamp is provided with a receiving tube; one end of the receiving tube is the rivet inlet end, which is adapted to be connected to the outlet end of the feeding mechanism to receive rivets; the other end of the receiving tube is adapted to be connected to the receiving cavity.

[0031] The receiving tube has a discharge port, which is adapted to allow the shank of the rivet to pass through. This design ensures that the upper and lower clamps effectively accommodate the head of the rivet.

[0032] Furthermore, the receiving cavity includes a conical section, a large-diameter section, and a small-diameter section;

[0033] The small-diameter end of the tapered section is closed, and the large-diameter end of the tapered section is connected to one end of the small-diameter section through the large-diameter section, while the other end of the small-diameter section is open; the large-diameter section is adapted to accommodate the head cap of the rivet. This design prevents the rivet head from accidentally detaching from the receiving cavity.

[0034] Furthermore, the mounting bracket is provided with weight-reducing grooves. This design reduces the load on the user's arms.

[0035] On the other hand, this utility model also discloses a rivet gun, including a rivet gun body, a feeding mechanism and the rivet mounting mechanism;

[0036] The upper nailing mechanism is mounted on the rivet gun body;

[0037] The rivet feeding end of the rivet feeding mechanism is connected to the discharge end of the feeding mechanism, and the feeding mechanism is adapted to supply rivets to the rivet feeding mechanism.

[0038] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0039] The second end of the connecting rod is driven by the drive mechanism to move in the guide groove to realize the opening and closing of the upper and lower clamps. No spring is needed. The structure of the upper nailing mechanism has been optimized to improve the stability and service life of the upper nailing mechanism and effectively reduce the cost of use.

[0040] By adding a limiting cover plate to prevent the slide bar from separating from the slider, the stability of the structure is improved;

[0041] By adding a maintenance hole, the connection between the limit cover and the slide bar can be maintained.

[0042] The above description of the disclosed content and the following description of the embodiments are intended to demonstrate and explain the spirit and principles of this utility model, and to provide a further explanation of the scope of the patent application of this utility model. Attached Figure Description

[0043] The specific embodiments of this utility model will be further described in detail below with reference to the accompanying drawings.

[0044] Figure 1 This is a schematic diagram (a) of the feeding mechanism assembled on the rivet gun body in this utility model.

[0045] Figure 2 This is a schematic diagram (a) of the feeding mechanism in this utility model;

[0046] Figure 3 This is a schematic diagram (a) of the fixed frame, movable frame and drive mechanism in this utility model;

[0047] Figure 4 This is a schematic diagram (II) of the fixed frame, movable frame and drive mechanism in this utility model;

[0048] Figure 5 This is a partial structural diagram of the movable frame and slider in this utility model;

[0049] Figure 6 This is a schematic diagram of the guide plate in this utility model;

[0050] Figure 7 This is a partial structural diagram of the upper clamp, lower clamp, and movable frame in this utility model;

[0051] Figure 8 This is a schematic diagram of the upper clamp and connecting rod in this utility model;

[0052] Figure 9 This is a schematic diagram of the lower chuck in this utility model;

[0053] Figure 10 This is a schematic diagram showing the rivet placed inside the lower clamp in this utility model;

[0054] Figure 11 This is a schematic diagram (II) of the feeding mechanism assembled on the rivet gun body in this utility model.

[0055] Figure 12 This is a schematic diagram (III) of the feeding mechanism assembled on the rivet gun body in this utility model.

[0056] Figure 13 This is a schematic diagram (IV) of the feeding mechanism assembled on the rivet gun body in this utility model.

[0057] Figure 14 This is a schematic diagram (II) of the feeding mechanism in this utility model;

[0058] Figure 15 This is a schematic diagram of the rivet gun in this utility model.

[0059] Explanation of icon numbers:

[0060] 1. Fixed frame; 11. Mounting frame; 111. Maintenance hole; 112. Weight reduction groove; 12. Slider; 13. Guide plate; 131. Guide groove; 131a. First section; 131b. Second section; 131c. Third section; 2. Movable frame; 21. Slide rod; 22. Limiting cover plate; 23. Connecting frame; 24. Connecting shaft; 3. Upper clamp; 31. Receiving tube; 311. Discharge port; 4. Lower clamp; 41a. Conical section; 41b. Large diameter section; 41c. Small diameter section; 5. Connecting rod; 51. Rotating component; 6. Drive mechanism; 7. Rivet gun body; 8. Feeding mechanism; 81. Discharge port; 9. Rivet. Detailed Implementation

[0061] The following specific embodiments illustrate the implementation of this utility model. Those skilled in the art can easily understand other advantages and effects of this utility model from the content disclosed in this specification. Although the description of this utility model will be presented in conjunction with preferred embodiments, this does not mean that the features of this utility model are limited to this embodiment. On the contrary, the purpose of describing the utility model in conjunction with the embodiments is to cover other options or modifications that may be derived based on the claims of this utility model. To provide a deep understanding of this utility model, many specific details will be included in the following description. This utility model may also be implemented without using these details. Furthermore, to avoid confusion or obscuring the focus of this utility model, some specific details will be omitted in the description. It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0062] In the description of this embodiment, it should be noted that the terms "upper", "lower", "inner", "bottom", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing the utility model 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 the utility model.

[0063] The terms “first”, “second”, etc., are used only to distinguish descriptions and should not be interpreted as indicating or implying relative importance.

[0064] In the description of this embodiment, it should also be noted that, unless otherwise explicitly specified and limited, the terms "provided with," "set up," "connected," and "linked" 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 of two components. Those skilled in the art can understand the specific meaning of the above terms in this embodiment based on the specific circumstances.

[0065] On one hand, this application discloses a rivet loading mechanism. This rivet loading mechanism is adapted to be mounted on the rivet gun body 7. The rivet loading mechanism is used to insert the shank of the rivet 9 into the nozzle of the rivet gun body 7.

[0066] Please see Figures 1-2As shown, the rivet-mounting mechanism includes a fixed frame 1, a movable frame 2, an upper clamp 3, a lower clamp 4, a connecting rod 5, and a drive mechanism 6. The fixed frame 1 is adapted to be mounted on the rivet gun body 7. A guide groove 131 is provided on the fixed frame 1. The movable frame 2 is slidably mounted on the fixed frame 1. The drive mechanism 6 is provided on the fixed frame 1. The telescopic end of the drive mechanism 6 is adapted to drive the movable frame 2 to move along the axial direction of the rivet gun body 7. The axial direction of the rivet gun body 7 is the same as the axial direction of the rivet gun nozzle.

[0067] Both the upper chuck 3 and the lower chuck 4 include clamping ends and toothed ends arranged opposite to each other. The toothed ends of both the upper chuck 3 and the lower chuck 4 are provided with toothed structures (such as...). Figure 7 (As shown). The toothed ends of the upper chuck 3 and the lower chuck 4 mesh with each other and are rotatably connected to the movable frame 2. The first end of the connecting rod 5 is fixed to the upper chuck 3. The second end of the connecting rod 5 is placed in the guide groove 131. The guide groove 131 is adapted to guide and limit the second end of the connecting rod 5 so that the clamping ends of the upper chuck 3 and the lower chuck 4 open and close under the drive of the drive mechanism 6.

[0068] When the drive mechanism 6 drives the movable frame 2 to move along the axial direction of the rivet gun body 7, the movable frame 2 drives the upper chuck 3 and the lower chuck 4 to move along the axial direction of the rivet gun body 7. During this time, the upper chuck 3 drives the connecting rod 5 to move along the axial direction of the rivet gun body 7. The second end of the connecting rod 5 is designed to cooperate with the guide groove 131. Under the guidance and limiting effect of the guide groove 131, the second end of the connecting rod 5 drives the upper chuck 3 to rotate. The upper chuck 3 then drives the lower chuck 4 to rotate through its toothed end, thereby realizing the opening and closing of the clamping ends of the upper chuck 3 and the lower chuck 4.

[0069] This invention eliminates the need for springs. The second end of the connecting rod 5 is driven by the drive mechanism 6 to move within the guide groove 131, thereby opening and closing the upper clamp 3 and the lower clamp 4. This optimizes the structure of the upper nailing mechanism, improves its stability and service life, and effectively reduces operating costs.

[0070] Please see Figures 3-4 As shown, the mounting bracket 1 includes a mounting frame 11, a slider 12, and a guide plate 13. The mounting frame 11 is adapted to be mounted on the rivet gun body 7. Both the slider 12 and the guide plate 13 are mounted on the mounting frame 11. The slider 12 is located between the guide plate 13 and the mounting frame 11. A groove is formed on the slider 12. The movable frame 2 is slidably disposed on the groove of the slider 12 and is located between the slider 12 and the guide plate 13. A connecting rod 5 is placed between the guide plate 13 and the movable frame 2. A guide groove 131 is formed on the guide plate 13.

[0071] In this embodiment, the axial direction of the rivet gun body 7 is arranged along the front-to-back direction. The nozzle of the rivet gun body 7 is located at the front end of the rivet gun body 7. The mounting bracket 11, the slide groove of the slider 12, the guide plate 13, and the movable frame 2 all extend along the axial direction of the rivet gun body 7 (i.e., along the front-to-back direction). The mounting bracket 11 is "U" shaped. Both ends of the mounting bracket 11 are fitted onto the rivet gun body 7 by corresponding clamps. The guide plate 13 is placed between the mounting bracket 11 and the rivet gun body 7. The slider 12 is fixed on the mounting bracket 11 and located between the two clamps. Both the front and rear ends of the mounting bracket 11 have through holes for the movable frame 2 to pass through. The front end of the movable frame 2 is the end away from the mounting bracket 11. The drive mechanism 6 is arranged on the mounting bracket 11, and the drive end of the drive mechanism 6 is connected to the front end of the movable frame 2. The upper chuck 3 and the lower chuck 4 are arranged at the front end of the movable frame 2. The first end of the connecting rod 5 (i.e. the front end of the connecting rod 5) is fixed on the upper clamp 3, and the second end of the connecting rod 5 (i.e. the rear end of the connecting rod 5) is placed in the guide groove 131.

[0072] Preferably, the drive mechanism 6 is a cylinder. The fixed end of the cylinder is fixed to the mounting bracket 11, and the drive end of the cylinder is connected to the front end of the movable frame 2 to drive the movable frame 2 to move in the front-back direction.

[0073] Further, please refer to Figure 2 As shown, in order to reduce the weight of the rivet mounting mechanism, a weight-reducing groove 112 is provided on the mounting bracket 1, thereby effectively reducing the load on the user's arm. In this embodiment, the weight-reducing groove 112 is provided on the mounting bracket 11 and is located on the side of the mounting bracket 11 closer to the rivet gun body 7.

[0074] Please see Figures 3-5 As shown, the movable frame 2 includes a slide rod 21 and a limiting cover plate 22. The slide rod 21 is slidably connected to the slide groove of the slider 12. The slide rod 21 is located between the slider 12 and the connecting rod 5. The limiting cover plate 22 is bolted to the slide rod 21. The limiting cover plate 22 is adapted to prevent the slider 12 from disengaging from the slide rod 21. A maintenance hole 111 is provided on the mounting frame 11, which is adapted to expose the bolt so that the user can tighten the bolt between the slide rod 21 and the limiting cover plate 22, or remove the bolt between the slide rod 21 and the limiting cover plate 22.

[0075] In this embodiment, the limiting cover plate 22 is disposed on the side of the slide rod 21 away from the slider 12. The limiting cover plate 22 has limiting protrusions at both the front and rear ends to prevent the slider 12 from accidentally disengaging from the slide rod 21.

[0076] Further, please refer to Figures 3-4 As shown, the movable frame 2 also includes a connecting frame 23. The connecting frame 23 is fixed to the end of the slide rod 21 away from the mounting frame 11. A connecting shaft 24 is provided on the connecting frame 23. The toothed ends of the upper clamp 3 and the lower clamp 4 are rotatably mounted on the slide rod 21 through the corresponding connecting shafts 24.

[0077] In this embodiment, the connecting frame 23 is fixed to the front end of the slide rod 21. The driving end of the driving mechanism 6 is connected to the connecting frame 23 to drive the connecting frame 23 to move along the axial direction (i.e., along the front-to-back direction) of the rivet gun body 7. The connecting shaft 24 extends along the front-to-back direction. There are two connecting shafts 24, which are arranged vertically and horizontally. The upper chuck 3 and the lower chuck 4 are respectively mounted on the corresponding connecting shafts 24, so that the upper chuck 3 is positioned above the lower chuck 4.

[0078] Please see Figures 7-9 As shown, the upper chuck 3 has an upper receiving groove on its clamping end, and the lower chuck 4 has a lower receiving groove on its clamping end. When the clamping ends of the upper chuck 3 and the lower chuck 4 are closed, they form a receiving cavity. One end of the receiving cavity is open, and the other end is closed. The receiving cavity is suitable for accommodating the head of the rivet 9.

[0079] In this embodiment, the rear end of the receiving cavity is open, and the front end is closed. For details, please refer to [link / reference needed]. Figures 9-10 As shown, the receiving cavity includes a tapered section 41a, a large-diameter section 41b, and a small-diameter section 41c. The small-diameter end (i.e., the front end) of the tapered section 41a is closed. The large-diameter end (i.e., the rear end) of the tapered section 41a is connected to the front end of the small-diameter section 41c via the large-diameter section 41b. The rear end of the small-diameter section 41c is open and adapted to be aligned with the nozzle of the rivet gun body 7. The large-diameter section 41b is adapted to receive the head cap of the rivet 9.

[0080] Furthermore, the upper clamp 3 is provided with a receiving tube 31. One end of the receiving tube 31 is the rivet inlet end, which is adapted to connect to the outlet end of the feeding mechanism 8 to receive the rivet 9. The other end of the receiving tube 31 is adapted to communicate with the receiving cavity. A discharge port 311 is provided on the receiving tube 31, which is adapted for the shank of the rivet 9 to pass through.

[0081] In this embodiment, the receiving tube 31 is located at the upper end of the upper clamp 3. The discharge port 311 is opened at the bottom of the receiving tube 31. When the rivet 9 is placed inside the receiving tube 31, the shank of the rivet 9 passes through the discharge port 311 and is placed outside the upper clamp 3, so that the head of the rivet 9 is suspended inside the receiving tube 31. The head of the rivet 9 suspended inside the receiving tube 31 falls into the receiving cavity under its own weight.

[0082] Furthermore, in order to ensure that the shank of the rivet 9 can pass through the material outlet 311, the length of the material outlet 311 is greater than or equal to the length of the shank of the rivet 9.

[0083] Please see Figure 2 and Figure 8 As shown, a rotating component 51 is rotatably mounted on the second end of the connecting rod 5. The rotating component 51 is placed within the guide groove 131. The guide groove 131 is adapted to guide and limit the rotating component 51.

[0084] In this embodiment, the rotating component 51 is a roller or a bearing wheel. The rotating component 51 is adapted to roll in the guide groove 131 so that the second end of the connecting rod 5 can move smoothly in the guide groove 131 through the rotating component 51.

[0085] Further, please refer to Figure 3 and Figure 6 As shown, the guide groove 131 includes a first section 131a, a second section 131b, and a third section 131c, which are sequentially distributed along the axial direction of the rivet gun body 7. The first section 131a, the second section 131b, and the third section 131c are all on the same plane. The first section 131a and the third section 131c are arranged parallel to each other and both extend along the axial direction of the rivet gun body 7. The two ends of the second section 131b are connected to the first section 131a and the third section 131c, respectively; the included angle between the first section 131a and the second section 131b is an obtuse angle.

[0086] In this embodiment, the first segment 131a, the second segment 131b, and the third segment 131c are arranged sequentially from front to back. All three segments are located on the same vertical plane. The first segment 131a and the third segment 131c are arranged parallel to each other vertically and extend in the front-to-back direction. That is, the projection of the axis of the rivet gun body 7 nozzle onto this vertical plane is parallel to both the first segment 131a and the third segment 131c. The first segment 131a is located below the third segment 131c. The rear end of the first segment 131a is connected to the front end of the second segment 131b, and the rear end of the second segment 131b is connected to the front end of the third segment 131c.

[0087] Preferably, the angle between the first segment 131a and the second segment 131b is 163° to 168°. The angle between the second segment 131b and the third segment 131c is 163° to 168°.

[0088] Furthermore, the connection between the first segment 131a and the second segment 131b is rounded, and the connection between the second segment 131b and the third segment 131c is also rounded, so that the fit between the rotating part 51 and the guide groove 131 is smoother.

[0089] On the other hand, this application discloses a rivet gun. The rivet gun includes a rivet gun body 7, a feeding mechanism 8, and a rivet feeding mechanism. The rivet feeding mechanism is mounted on the rivet gun body 7. The feed end of the rivet feeding mechanism is connected to the discharge end of the feeding mechanism 8, and the feeding mechanism 8 is adapted to supply rivets 9 to the rivet feeding mechanism.

[0090] In this embodiment, the feeding mechanism 8 is prior art. The feeding mechanism 8 is provided with a discharge port 81, which is connected to the nail inlet end of the receiving tube 31 via a pipe. Existing Chinese patent document CN 108356202 A describes a fully automatic riveting machine and its control method. This document describes the feeding mechanism in detail, so it will not be repeated here.

[0091] In this embodiment, the rivet gun body 7 is a pneumatic rivet gun body. The rivet gun body 7 is equipped with an air vent, and the rivet gun body 7's ejection end is equipped with a rivet core waste recovery pipe (not shown in the accompanying drawings). The rivet gun body 7 is prior art and will not be described in detail.

[0092] The working principle of the rivet gun in this embodiment is as follows:

[0093] When the rivet gun is turned on, the rivet core waste recycling tube continues to suck air. The rotating part 51 is located at the front end of the first section 131a, and the clamping ends of the upper chuck 3 and the lower chuck 4 are in a closed state.

[0094] The rivet 9 in the feeding mechanism 8 is conveyed to the receiving tube 31 through a pipe; the shank of the rivet 9 passes through the discharge port 311 and is placed outside the upper clamp 3, so that the head of the rivet 9 is suspended in the receiving tube 31; the head of the rivet 9 suspended in the receiving tube 31 falls into the receiving cavity under its own weight. At this time, the head of the rivet 9 is placed in the receiving cavity, and the shank of the rivet 9 is aligned with the nozzle of the rivet gun body 7 (e.g., Figure 1 (As shown).

[0095] Subsequently, the drive mechanism 6 drives the movable frame 2 to move backward, and the movable frame 2 drives the rotating part 51 to move backward through the connecting rod 5.

[0096] When the rotating part 51 moves from the front end of the first section 131a to the front end of the second section 131b, the clamping ends of the upper chuck 3 and the lower chuck 4 are always in a closed state, causing the rivet 9 in the receiving cavity to be inserted into the nozzle of the rivet gun body 7 (e.g. Figure 11 (As shown).

[0097] When the rotating component 51 moves from the front end of the second segment 131b to the front end of the third segment 131c, under the guidance and limitation of the guide groove 131, the rotating component 51 drives the front end of the connecting rod 5 to move, thereby causing the upper chuck 3 to rotate around the connecting shaft 24, and thus causing the lower chuck 4, which meshes with the upper chuck 3, to rotate, that is, the clamping ends of the upper chuck 3 and the lower chuck 4 separate (e.g., Figure 12 (As shown); at this time, the rivets 9 inside the nozzle of the rivet gun body 7 are always attracted to the nozzle by the suction action of the rivet core waste recycling tube.

[0098] When the rotating part 51 moves from the front end of the third section 131c to the rear end of the third section 131c, the upper chuck 3 and the lower chuck 4 move backward, and the clamping ends of the upper chuck 3 and the lower chuck 4 are always in a separated state (e.g., Figure 13 (As shown).

[0099] Afterwards, the user controls the rivet gun body 7 to rivet using the trigger. After riveting is completed, the rivet core inside the rivet gun body 7 is discharged to the outside of the rivet gun body 7 through the rivet core waste collection tube under the suction action of the rivet core waste collection tube. At the same time, the drive mechanism 6 drives the movable frame 2 to reset forward, so that the rotating part 51 is reset to the front end of the first section 131a and the clamping ends of the upper chuck 3 and the lower chuck 4 are in a closed state.

[0100] In summary, this utility model uses a drive mechanism to drive the second end of the connecting rod to move within the guide groove, thereby opening and closing the upper and lower clamps. This eliminates the need for springs, significantly reducing the failure rate. The structure of the upper nailing mechanism has been optimized, improving its stability and service life, and effectively reducing operating costs. The addition of a limiting cover plate prevents the slide bar from separating from the slider, improving structural stability. Furthermore, a maintenance hole is added to facilitate maintenance of the connection between the limiting cover plate and the slide bar.

[0101] The above embodiments are merely illustrative of the principles and effects of this utility model and are not intended to limit the scope of this utility model. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this utility model. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this utility model should still be covered by the claims of this utility model.

Claims

1. A nailing mechanism, characterized in that, include: Fixed frame (1), movable frame (2), upper clamp (3), lower clamp (4) and connecting rod (5); The fixing frame (1) is adapted to be mounted on the rivet gun body (7), and the fixing frame (1) is provided with a guide groove (131). The movable frame (2) is slidably mounted on the fixed frame (1), and the fixed frame (1) is provided with a drive mechanism (6) for driving the movable frame (2) to move along the axial direction of the rivet gun body (7). The upper chuck (3) and the lower chuck (4) each include a clamping end and a toothed end arranged opposite to each other; the toothed ends of the upper chuck (3) and the lower chuck (4) mesh with each other and are rotatably connected to the movable frame (2); The first end of the connecting rod (5) is fixed on the upper clamp (3), and the second end of the connecting rod (5) is placed in the guide groove (131). The guide groove (131) is adapted to guide and limit the second end of the connecting rod (5) so that the clamping ends of the upper clamp (3) and the lower clamp (4) open and close under the drive of the drive mechanism (6).

2. The tacking mechanism of claim 1, wherein, The second end of the connecting rod (5) is rotatably provided with a rotating component (51), which is placed in the guide groove (131); the guide groove (131) is adapted to guide and limit the rotating component (51).

3. The tacking mechanism of claim 1, wherein, The guide groove (131) includes a first section (131a), a second section (131b) and a third section (131c) distributed sequentially along the axial direction of the rivet gun body (7). The first segment (131a), the second segment (131b) and the third segment (131c) are all on the same plane; the first segment (131a) and the third segment (131c) are arranged in parallel and both extend along the axial direction of the rivet gun body (7); The two ends of the second segment (131b) are connected to the first segment (131a) and the third segment (131c), respectively; The angle between the first segment (131a) and the second segment (131b) is an obtuse angle.

4. The tacking mechanism of claim 1, wherein, The fixing frame (1) includes: mounting frame (11), slider (12) and guide plate (13); The mounting bracket (11) is adapted to be mounted on the rivet gun body (7), and the drive mechanism (6) is mounted on the mounting bracket (11); The slider (12) and the guide plate (13) are both mounted on the mounting frame (11); the slider (12) is located between the guide plate (13) and the mounting frame (11); The movable frame (2) is slidably disposed on the slide groove of the slider (12) and located between the slider (12) and the guide plate (13); the connecting rod (5) is placed between the guide plate (13) and the movable frame (2); The guide groove (131) is formed on the guide plate (13).

5. The tacking mechanism of claim 4, wherein, The movable frame (2) includes: a slide bar (21) and a limiting cover plate (22); The slide rod (21) is slidably connected to the slide groove of the slider (12), and the slide rod (21) is located between the slider (12) and the connecting rod (5); The limiting cover plate (22) is bolted to the slide bar (21), and the limiting cover plate (22) is adapted to prevent the slider (12) from disengaging from the slide bar (21); The mounting bracket (11) has a maintenance hole (111) that is adapted to expose the bolt.

6. The tacking mechanism of claim 5, wherein, The movable frame (2) also includes: a connecting frame (23); The connecting frame (23) is fixed to one end of the slide rod (21) away from the fixed frame (1); the connecting frame (23) is provided with a connecting shaft (24); the toothed ends of the upper clamp (3) and the lower clamp (4) are respectively rotatably mounted on the slide rod (21) through the corresponding connecting shaft (24); The drive mechanism (6) is adapted to drive the connecting frame (23) to move along the axial direction of the rivet gun body (7).

7. The nailing mechanism according to claim 1, characterized in that, When the clamping ends of the upper clamp (3) and the lower clamp (4) are closed, they enclose and form a receiving cavity; One end of the receiving cavity is open and the other end is closed; the receiving cavity is adapted to receive the head of the rivet (9); The upper clamp (3) is provided with a receiving tube (31); one end of the receiving tube (31) is the rivet inlet end, which is adapted to be connected to the outlet end of the feeding mechanism (8) to receive the rivet (9); the other end of the receiving tube (31) is adapted to be connected to the receiving cavity; The receiving tube (31) is provided with a material outlet (311): the material outlet (311) is adapted for the rod of the rivet (9) to pass through.

8. The tacking mechanism of claim 7, wherein, The receiving cavity includes: a conical section (41a), a large-diameter section (41b), and a small-diameter section (41c). The small-diameter end of the tapered section (41a) is closed, and the large-diameter end of the tapered section (41a) is connected to one end of the small-diameter section (41c) through the large-diameter section (41b), and the other end of the small-diameter section (41c) is open; the large-diameter section (41b) is adapted to accommodate the head brim of the rivet (9).

9. The tacking mechanism of claim 1, wherein, The fixing frame (1) is provided with a weight reduction groove (112).

10. A rivet gun, characterized in that, include: The rivet gun body (7), the feeding mechanism (8), and the rivet mounting mechanism as described in any one of claims 1 to 9; The upper nailing mechanism is mounted on the rivet gun body (7); The feed end of the upper nailing mechanism is connected to the discharge end of the feeding mechanism (8), and the feeding mechanism (8) is adapted to supply rivets (9) to the upper nailing mechanism.

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