Rivet nozzle for rivet gun and rivet gun

Abstract

A rivet nozzle (10) for a rivet gun, and a rivet gun. The rivet nozzle comprises a rivet nozzle body (1), wherein a blocking member (2) is provided on the side wall of the rivet nozzle body (1), one end of the blocking member (2) extends into a rivet feeding hole (11) of the rivet nozzle body (1), and a reset member (3) is provided at the other end of the blocking member (2). By means of the automatically resettable blocking member (2), the rivet nozzle (10) for a rivet gun enables the blocking member (2) to clamp a rivet when the rivet is inserted through the rivet feeding hole (11) of the rivet nozzle (10), which eliminates the need to worry about the rivet falling out and the need to hold the rivet by hands before blind riveting, thereby facilitating blind riveting operation.

Description

Riveting nozzle and riveting gun for riveting gun

[0001] The present application claims priority to the Chinese patent application No. 202422339649.8, filed on September 25, 2024, and entitled "Riveting nozzle and riveting gun for riveting gun", the content of which is incorporated herein by reference in its entirety. TECHNICAL FIELD

[0002] The present application relates to, but is not limited to, the field of riveting electric tools. BACKGROUND

[0003] The riveting nozzle hole of the riveting electric tool gun head is only a rivet free passing hole, and the broken tail needle cannot be limited by the riveting nozzle before and after riveting. Before riveting, if the riveting gun head is downward, the rivet will fall off in a free state after being inserted into the riveting nozzle, and the user needs to hold it all the time to keep the rivet from falling off. Such a riveting nozzle is not conducive to use in high altitude or some special occasions. After riveting, the tail needle also falls off freely forward or backward according to the state of the gun body, which is also not conducive to the collection of the discarded tail needle. SUMMARY

[0004] In a first aspect, the present application provides a riveting nozzle for a riveting gun, comprising: a riveting nozzle body, a side wall of the riveting nozzle body is provided with a blocking piece, one end of the blocking piece extends into a rivet hole of the riveting nozzle body, and the other end of the blocking piece is provided with a reset piece.

[0005] Optionally, one end of the blocking piece located in the rivet hole of the riveting nozzle body is a vertical surface or a first inclined surface extending towards the rear end of the rivet hole.

[0006] Optionally, one end of the blocking piece located in the rivet hole of the riveting nozzle body is a second inclined surface inclined inward.

[0007] Optionally, the reset piece is arranged on the circumferential side of the riveting nozzle body, and the reset piece is elastically connected to the other end of the blocking piece.

[0008] Optionally, the reset piece is an O-ring, the other end of the blocking piece extends out of the riveting nozzle body, and the O-ring is sleeved on the end of the blocking piece extending out of the riveting nozzle body.

[0009] Optionally, the end of the blocking piece located at one end of the outer side wall of the riveting nozzle body is provided with a clamping groove, and the O-ring is sleeved in the clamping groove.

[0010] Optionally, the blocking piece is two, and the two blocking pieces are symmetrically arranged on the side wall of the riveting nozzle body.

[0011] In a second aspect, the present application also provides a rivet gun comprising a transmission mechanism, a riveting assembly, a clamping jaw and a clamping jaw sleeve, and further comprising: the riveting nose for the rivet gun according to any one of the above inventive content, the transmission mechanism being in transmission connection with the riveting assembly, the riveting assembly being in transmission connection with the clamping jaw sleeve, the clamping jaw sleeve being sleeved on the clamping jaw, and the riveting nose body being arranged at the front end of the clamping jaw.

[0012] Optionally, the rivet gun further comprises a sleeve, the sleeve being sleeved on the outside of the clamping jaw sleeve, and the riveting nose body being movably connected with the sleeve.

[0013] Optionally, the blocking piece is arranged on the side wall of the riveting nose body outside the front end of the sleeve; or, the front end surface of the sleeve is provided with a step which is sunken inwardly, and the blocking piece is arranged on the side wall of the riveting nose body inside the sunken step.

[0014] In a third aspect, the present application also provides a riveting nose for a rivet gun, comprising: a riveting nose body, the riveting nose body being formed with a rivet feeding hole which penetrates through the riveting nose body in the axial direction, the rivet feeding hole having a rivet feeding opening and a rivet outlet opening which are opposite to each other; a blocking piece, the blocking piece comprising a blocking portion and a connecting portion which are connected with each other, and the blocking piece being arranged in the riveting nose body, at least part of the blocking portion extending into the rivet feeding hole; and a restoring member, the restoring member being connected with the connecting portion to provide a restoring force to the blocking piece, and to adjust the length of the blocking portion extending into the rivet feeding hole; the restoring member being configured to allow the blocking piece to have a tendency to move in a direction away from the rivet feeding hole under the action of an external force; and the restoring member being configured to allow the blocking piece to have a tendency to move in a direction extending into the rivet feeding hole by the restoring force after the external force disappears, so that the blocking piece can block the passage between the rivet feeding opening and the rivet outlet opening.

[0015] Optionally, the blocking piece has at least two, each of the blocking pieces comprising a blocking portion and a connecting portion which are connected with each other, and each of the blocking pieces being arranged in the riveting nose body and being spaced apart around the circumference of the riveting nose body, at least part of each of the blocking portions extending into the rivet feeding hole, and each of the connecting portions being connected with the restoring member; wherein the restoring member is configured to allow all of the blocking pieces to have a tendency to move in a direction away from each other under the action of an external force; and the restoring member is configured to allow all of the blocking pieces to have a tendency to move in a direction approaching to each other by the restoring force after the external force disappears, so that all of the blocking pieces approach to each other and abut.

[0016] Optionally, the blocking portion has a blocking surface which faces the rivet outlet opening, the blocking surface being perpendicular to the central axis of the rivet feeding hole, and the blocking surface being a flat surface or a concave-convex surface.

[0017] Optionally, the blocking portion has a blocking surface which faces the rivet outlet opening, the blocking surface being a flat surface and being arranged obliquely with respect to the central axis of the rivet feeding hole.

[0018] Optionally, the axial distance between the blocking surface and the rivet outlet gradually increases from the edge of the rivet inlet to the central axis of the rivet inlet, and the blocking surface and the longitudinal section of the rivet holder body form a first included angle a, the first included angle a satisfies: 0 degrees < a ≤ 15 degrees; or, the axial distance between the blocking surface and the rivet outlet gradually decreases from the edge of the rivet inlet to the central axis of the rivet inlet, and the blocking surface and the longitudinal section of the rivet holder body form a second included angle β, the second included angle β satisfies: 0 degrees < β ≤ 60 degrees.

[0019] Optionally, the connecting portion is located outside the rivet holder body and connected with the reset member, the rivet holder body is provided with a mounting through hole penetrating through the side wall thereof, and the blocking portion is slidingly fitted in the mounting through hole.

[0020] Optionally, the extension direction of the mounting through hole is vertically arranged or obliquely arranged relative to the central axis of the rivet inlet.

[0021] Optionally, the reset member is an elastic member, and the elastic member is used to provide the blocking member with an elastic force in the direction of moving towards each other.

[0022] Optionally, the reset member is an O-shaped ring, the outer circumferential side of the connecting portion opposite to the blocking portion is provided with a clamping groove, the clamping groove extends around the circumference of the rivet inlet, and the O-shaped ring is arranged on the outer circumference of the rivet holder body and at least partially located in the clamping groove.

[0023] Optionally, the connecting portion is in an arc shape extending along the circumference of the rivet holder body, and the connecting portion is matched with the outer side surface of the rivet holder body.

[0024] Optionally, the rivet inlet has a rivet inlet and a rivet outlet arranged opposite to each other, the outer circumference of the rivet holder body is provided with a butt joint portion, the butt joint portion is arranged on the side of the blocking member close to the rivet outlet, and is used to be connected with the outer sleeve.

[0025] Optionally, the blocking portion has a guide surface facing the rivet outlet, and the axial distance between the guide surface and the rivet inlet gradually increases from the edge of the rivet inlet to the central axis of the rivet inlet.

[0026] Optionally, the rivet inlet is used to provide a movement channel for the rivet, the reset member is configured to allow the blocking member to have a tendency to move in the direction of exiting the rivet inlet under the action of the external force of the tail portion of the rivet, and after the tail portion of the rivet is inserted, the blocking member can clamp the tail portion of the rivet under the action of the reset force.

[0027] In a fourth aspect, the present application also provides a rivet gun, comprising: a shell, a mounting space is formed in the shell, a transmission mechanism and a rivet assembly are arranged in the mounting space and are connected in transmission; an outer sleeve connected with the shell; and a rivet holder as described in any one of the above technical solutions; wherein the outer sleeve is arranged on the outer circumferential side of the rivet holder body and is connected with the rivet holder body.

[0028] Optionally, the rivet inlet hole has a rivet inlet opening and a rivet outlet opening opposite to each other, the mounting ring is arranged on the outer periphery of the rivet holder body close to the rivet inlet opening, the side of the mounting ring opposite to the rivet inlet opening is provided with a butt joint part, the sleeve is internally provided with a through hole, and a matching ring is protruded on the hole wall of the sleeve and connected with the butt joint part; and the end surface of the mounting ring opposite to the rivet inlet opening is abutted on the end surface of the sleeve opposite to the shell. BRIEF DESCRIPTION OF DRAWINGS

[0029] Fig. 1 is a structural perspective view of the rivet holder body and the blocking piece in the embodiment;

[0030] Fig. 2 is an exploded view of the rivet holder for the rivet gun in the embodiment;

[0031] Fig. 3 is a sectional view I of the rivet holder body and the blocking piece in the embodiment;

[0032] Fig. 4 is a sectional view II of the rivet holder body and the blocking piece in the embodiment;

[0033] Fig. 5 is a structural perspective view of the rivet holder for the rivet gun in the embodiment;

[0034] Fig. 6 is a structural perspective view II of the rivet holder for the rivet gun in the embodiment;

[0035] Fig. 7 is a sectional view I of the rivet holder for the rivet gun in the embodiment;

[0036] Fig. 8 is a sectional view II of the rivet holder for the rivet gun in the embodiment;

[0037] Fig. 9 is a structural view I of the rivet holder for the rivet gun in the embodiment in use;

[0038] Fig. 10 is a structural view II of the rivet holder for the rivet gun in the embodiment in use;

[0039] Fig. 11 is a structural view III of the rivet holder for the rivet gun in the embodiment in use;

[0040] Fig. 12 is an enlarged view of A in Fig. 8;

[0041] Fig. 13 is a sectional view III of the rivet holder for the rivet gun in the embodiment;

[0042] Fig. 14 is a sectional view IV of the rivet holder for the rivet gun in the embodiment;

[0043] Fig. 15 is a sectional view V of the rivet holder for the rivet gun in the embodiment;

[0044] Fig. 16 is a sectional view of the rivet gun in the embodiment;

[0045] Fig. 17 is a partial sectional view of the rivet gun in the embodiment. Embodiment of the application

[0046] In order to describe the technical content, structural features, purposes and effects of the technical solutions in detail, the following will be described in detail in combination with specific embodiments and with reference to the drawings.

[0047] The rivet gun is suitable for fastening and riveting in manufacturing industries of various metal plates, pipes and the like, and is widely used in the riveting of electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, decoration and the like. The rivet gun is a tool for installing and fixing rivets, and is usually used for the connection of metals or other materials.

[0048] When the rivet gun is used for riveting, the tail of the rivet will be broken, and the broken tail is usually the tail of the core rod of the rivet, which will be extruded into the gun body and discharged from the tail of the gun. The riveting hole of the riveting gun nose of the existing rivet gun is only used as a rivet hole for the rivet to pass freely, especially after riveting, the broken tail cannot be blocked from moving towards the front end of the riveting gun nose, thereby resulting in low working efficiency of the rivet gun.

[0049] There is a riveting electric tool which adds a structure capable of clamping the tail of the rivet in the riveting nose, which can prevent the tail from falling off after the rivet is inserted; however, when the tail breaks, the tail needle will still be clamped in the riveting nose position, and the broken tail needle needs to be manually pulled out or inserted into the riveting nose, so that the next rivet can be smoothly inserted; this brings great trouble to the riveting work and greatly affects the riveting efficiency.

[0050] As shown in FIGS. 1 to 4, the present embodiment provides a rivet gun nose, which comprises a nose body 1, and a blocking piece 2 is arranged on the side wall of the nose body 1, one end of the blocking piece 2 extends into the rivet hole of the nose body 1, and the other end of the blocking piece is provided with a reset piece (which will be described below). In the present embodiment, the special blocking piece 2 structure is arranged on the nose body, so that when the rivet is inserted, the blocking piece 2 moves outward along the installation direction of the blocking piece under the push of the rivet, until the rivet is inserted to the position, and the blocking piece tightens the rivet under the action of the reset piece, thereby avoiding the situation that the rivet falls off after being inserted. In the riveting process, the clamping jaw moves backward with the tail needle of the rivet, breaks the rivet, and continuously moves backward until the tail needle passes through the blocking piece and moves to the rear end of the blocking piece. At this time, after the breaking action is completed, the tail needle moves forward, and during the movement process, the tail needle will first contact the blocking piece and be blocked by the blocking piece. At this time, the tail needle will be intercepted and will not be pushed out of the blocking piece. After the rivet gun is reset, the clamping jaw will release the tail needle, and the tail needle will be blocked and retained in the guide pipe by the rivet gun nose. Through circulation, the tail needle will be impacted by the impact force generated by the broken tail needle after the next riveting and will be hit into the rear-end rivet collecting barrel, thereby completing the collection of the tail needle.

[0051] As shown in FIGS. 5-8, the rivet gun nose 10 provided by the present application includes a nose body 1, a blocking member 2 and a reset member 3.

[0052] The nose body 1 is formed with a rivet insertion hole 11 extending through the nose body 1 along the axial direction of the nose body 1, the rivet insertion hole 11 has a rivet insertion opening 111 and a rivet outlet opening 112 opposite to each other. The blocking member 2 includes a blocking portion 21 and a connecting portion 22 connected to each other, and is arranged in the nose body 1, at least a part of the blocking portion 21 extends into the rivet insertion hole 11. The reset member 3 is connected to the connecting portion 22 to provide a reset force to the blocking member 2, and adjusts the length of the blocking portion 21 extending into the rivet insertion hole 11. The reset member 3 is configured to allow the blocking member 2 to have a tendency to move in a direction away from the rivet insertion hole 11 under the action of an external force. The reset member 3 is configured to allow the blocking member 2 to have a tendency to move in a direction extending into the rivet insertion hole 11 by the reset force after the external force disappears, so that the blocking member 2 can block the passage between the rivet insertion opening 111 and the rivet outlet opening 112.

[0053] In the specific use process, the rivet insertion hole 11 has a rivet insertion opening 111 and a rivet outlet opening 112 opposite to each other, a rivet enters the rivet insertion hole from the rivet insertion opening 111, and the tail of the rivet is pressed against the blocking member 2 during the insertion process, so that the blocking member 2 moves in a direction away from the rivet insertion hole 11. At the same time, the tail of the rivet is clamped by the blocking member 2 by the reset force of the reset member 3, so as to avoid the situation that the rivet falls off, as shown in FIG. 9. Thus, for some working conditions of the rivet gun, the rivet nose is pulled down during the use of the rivet gun, and the situation that the rivet falls off after being inserted into the rivet nose does not occur. The tail of the rivet is clamped by the blocking member 2 by the reset force of the reset member 3, which ensures that the rivet can be locked after being inserted to prevent it from falling off, so that the user can use it in any occasion without worrying about the clamping problem of the rivet.

[0054] Referring to FIGS. 10 and 11, during the pull riveting process, the pull riveting assembly 202 grabs the tail of the rivet and moves it in a direction close to the rivet outlet opening 112, and continues to move in a direction close to the rivet outlet opening 112 after the tail of the rivet is broken, until the tail of the rivet is separated from the blocking member 2. At this time, the blocking member 2 moves in a direction extending into the rivet insertion hole 11 under the action of the reset force of the reset member 3, so that the blocking portion 21 of the blocking member 2 can block the passage between the rivet insertion opening 111 and the rivet outlet opening 112, to seal the rivet insertion hole 11, and avoid the tail of the rivet moving towards the rivet insertion opening 111 through the blocking member 2. In other words, the blocking portion 21 can block the tail of the rivet from moving towards the rivet insertion opening 111 of the rivet gun nose 10, which ensures that the next rivet can be normally riveted, and thus is conducive to improving the working efficiency of the rivet gun.

[0055] As shown in FIG. 3 and FIG. 7, in the present embodiment, the side of the blocking piece 2 located in the rivet insertion hole 11 of the rivet setting head body 1 and away from the rivet insertion end is a vertical surface 2111 or a first inclined surface 211 (e.g., the blocking surface 211 in FIG. 14 and the blocking surface 211 in FIG. 16) extending obliquely toward the rear end of the rivet insertion hole 11. By providing the vertical surface or the first inclined surface extending outward, the broken rivet can be effectively blocked after breaking, and the tail of the rivet is pushed out of the blocking piece, thereby causing the subsequent rivet insertion to be blocked. In addition, in the present embodiment, the side of the blocking piece 2 located in the rivet insertion hole 11 of the rivet setting head body 1 and close to the rivet insertion end is a second inclined surface 2121 inclined inward. The provision of the second inclined surface 2121 effectively facilitates the insertion of the rivet. When the rivet is inserted, the end of the rivet abuts against the second inclined surface 2121, and under the combined action of the force and the second inclined surface, the blocking piece is retracted along the installation direction, and the rivet can be smoothly inserted into place.

[0056] In one embodiment, as shown in FIG. 5-FIG. 8 and FIG. 12, the rivet insertion hole 11 has a rivet insertion opening 111 and a rivet ejection opening 112 opposite to each other, and the blocking portion 21 has a blocking surface 211 facing the rivet ejection opening 112, the blocking surface 211 being a flat surface and being perpendicular to the central axis C of the rivet insertion hole 11. With the above design, the blocking surface 211 is a flat surface and is perpendicular to the central axis C, which can provide uniform blocking effect and ensure that the rivet is reliably intercepted when passing through the rivet insertion hole 11. At the same time, the flat and vertical blocking surface 211 simplifies the processing technology and is easy to be accurately processed by a numerical control machine tool. In addition, it can also avoid the tail of the rivet being pushed out of the blocking piece and moving toward the rivet insertion opening 111, thereby causing the subsequent rivet to be blocked and unable to work normally.

[0057] In another embodiment, as shown in FIG. 13, the rivet insertion hole 11 has a rivet insertion opening 111 and a rivet ejection opening 112 opposite to each other, and the blocking portion 21 has a blocking surface 211 facing the rivet ejection opening 112, the blocking surface 211 being perpendicular to the central axis C of the rivet insertion hole 11, and the blocking surface 211 being a concave-convex surface. With the above design, the concave-convex structure on the blocking surface 211 can form an additional clamping or buffering effect, preventing the rivet from rebounding back to the rivet insertion opening 111 side under the impact force. In addition, the concave-convex surface can disperse the force of the rivet on the blocking surface 211, avoiding the force being concentrated at a certain point, thereby reducing the wear of the blocking surface 211. In addition, it can also avoid the tail of the rivet being pushed out of the blocking piece and moving toward the rivet insertion opening 111, thereby causing the subsequent rivet to be blocked and unable to work normally.

[0058] In the present embodiment, the part of the blocking surface 211 close to the central axis C extends toward the rivet ejection opening 112 of the rivet insertion hole 11 to constitute a convex part of the concave-convex surface. For example, a sawtooth structure or a wave structure is formed on the blocking surface 211 to constitute the concave-convex surface.

[0059] In another embodiment, as shown in FIG. 14 and FIG. 15, the insertion hole 11 has an insertion opening 111 and an ejection opening 112 opposite to each other, and the blocking part 21 has a blocking surface 211 facing the ejection opening 112, the blocking surface 211 is a flat surface and is arranged obliquely relative to the central axis C of the insertion hole 11. In this embodiment, the oblique blocking surface 211 can exert a component force on the tail of the rivet to promote the tail of the rivet to move in a specific direction (usually along the central axis C) without being prone to jamming.

[0060] For example, as shown in FIG. 14, the axial distance between the blocking surface 211 and the ejection opening 112 gradually increases from the edge of the insertion hole 11 to the central axis C of the insertion hole 11, and the blocking surface 211 forms a first included angle a with the longitudinal section of the rivet setting body 1, and the first included angle a satisfies: 0 degrees < a ≤ 15 degrees, which ensures that the degree of inclination of the blocking surface 211 is relatively gentle. It should be noted that the longitudinal section of the rivet setting body 1 refers to the section perpendicular to the central axis C of the insertion hole 11.

[0061] Alternatively, as shown in FIG. 15, the axial distance between the blocking surface 211 and the ejection opening 112 gradually decreases from the edge of the insertion hole 11 to the central axis C of the insertion hole 11, and the blocking surface 211 forms a second included angle β with the longitudinal section of the rivet setting body 1, and the second included angle β satisfies: 0 degrees < β ≤ 60 degrees.

[0062] Through the above arrangement, the included angle between the blocking surface 211 and the hole wall of the insertion hole 11 can be relatively large, which can avoid the included angle between the blocking surface 211 and the hole wall of the insertion hole 11 being relatively small and causing the tail of the rivet to jam. Moreover, the blocking surface 211 has the above-mentioned inclination angle and corresponding inclination direction, which can better exert a component force on the tail of the rivet to promote the tail of the rivet to move in a specific direction (usually along the central axis C) without being prone to jamming.

[0063] As shown in FIG. 3 and FIG. 4, the reset part 3 is arranged on the side of the rivet setting body 1, and the reset part 3 is elastically connected to the other end of the blocking part 2. In the embodiment, the reset part 3 is an O-ring 31, the other end of the blocking part 2 extends out of the rivet setting body 1, and the O-ring 31 is sleeved on the end of the blocking part 2 extending out of the rivet setting body 1; and in this embodiment, the end of the blocking part 2 extending out of the rivet setting body 1 is provided with a clamping groove 221, and the O-ring 31 is fixed to the end of the blocking part 2 by being sleeved in the clamping groove 221; when the rivet is inserted, the blocking part 2 retracts, and the O-ring 31 expands outward; after the rivet setting is completed, the blocking part 2 resets under the action of the O-ring 31 to block the insertion hole 11 of the rivet setting body 1. Of course, in different embodiments, the reset part 3 can also be an elastic ring, a steel wire ring, a reset spring or other components that can reset the blocking part 2 after retraction.

[0064] The reset member 3 is an elastic member, which provides an elastic force to the blocking member 2 in a direction of approaching each other, so that the adjustment of the blocking member 2 is more simple and convenient.

[0065] For example, the reset member 3 is an O-ring, the outer circumferential side of the connecting portion 22 opposite to the blocking portion 21 is provided with a clamping groove 221 extending around the circumference of the rivet hole 11, the O-ring is arranged on the outer circumference of the rivet body 1 and at least partially located in the clamping groove 221, the O-ring as the reset member 3 can provide stable and uniform elastic reset force, and the flexible material thereof can avoid impact or wear on the blocking member 2 caused by rigid reset member. In addition, the clamping groove 221 partially embeds the O-ring therein, which provides physical constraint to prevent the O-ring from dislocation due to external force or vibration.

[0066] In addition, the connecting portion 22 is in an arc shape extending along the circumference of the rivet body 1, the connecting portion 22 is matched with the outer side surface of the rivet body 1, and the clamping groove 221 extends around the circumference of the rivet hole 11 and penetrates through the connecting portion 22, so as to increase the contact area of the O-ring and the clamping groove 221 and better prevent the O-ring from dislocation due to external force or vibration.

[0067] In other embodiments, the reset member 3 includes a reset ring, the reset ring is sleeved on the outer circumference of the rivet body 1 and fixedly connected to the outer circumference of the rivet body 1 through a connecting member, there is a gap between the reset ring and the outer circumference of the rivet body 1, a spring is arranged on the inner wall of the reset ring, one end of the spring opposite to the reset ring is connected to the connecting portion 22 and in a compressed state.

[0068] In some embodiments of the present application, the rivet hole 11 has a rivet inlet 111 and a rivet outlet 112 opposite to each other, the outer circumference of the rivet body 1 is provided with a butt joint portion 13, the butt joint portion 13 is arranged on the side of the blocking member 2 close to the rivet outlet 112 and used for connecting with an outer sleeve 203 (see Figure 16) to realize detachable connection therebetween. For example, the above-mentioned butt joint portion 13 is an external thread, and the above-mentioned outer sleeve 203 is provided with an internal thread matched with the external thread for connection. Alternatively, the above-mentioned butt joint portion 13 is a clamping hook, and correspondingly, the outer sleeve 203 is provided with a clamping hole, and the clamping hook and the clamping hole are connected together in clamping manner.

[0069] Optionally, the rivet insertion hole 11 has a rivet insertion opening 111 and a rivet exit opening 112 opposite to each other, and the rivet setting body 1 is provided with a mounting ring 14 near the outer periphery of the rivet insertion opening 111, and the mounting ring 14 is provided with an anti-slip part configured to prevent the rivet setting body 1 from loosening when the rivet setting body 1 is mounted to the outer sleeve 203 (see Figure 16). For example, the longitudinal section of the mounting ring 14 is hexagonal or pentagonal in shape, which is convenient for being clamped by a wrench and mounted to the outer sleeve 203, and can withstand the torque force applied by the wrench, and is used to rotate the rivet setting body 1 to achieve fastening or loosening. Alternatively, the anti-slip part is a rough surface (such as anti-slip lines, locking grooves or torque grooves, etc.) provided on the outer periphery of the mounting ring 14 to increase the friction force when the user manually installs it, which is convenient for the user to grip and rotate, and avoids the rivet setting body 1 from falling off from the user's hand during installation.

[0070] Please continue to refer to Figures 7-8 and 12, the rivet insertion hole 11 has a rivet insertion opening 111 and a rivet exit opening 112 opposite to each other, and the blocking part 21 has a guide surface 212 facing the rivet exit opening 112, and the axial distance between the guide surface 212 and the rivet insertion opening 111 gradually increases from the edge of the rivet insertion hole 11 to the center axis C of the rivet insertion hole 11, thereby facilitating the insertion of the tail of the rivet.

[0071] In the above embodiment, the blocking piece 2 is provided in two, and the two blocking pieces 2 are symmetrically arranged on the side wall of the rivet setting body 1; the arrangement of the two blocking pieces 2 can achieve the purpose of saving space while achieving the purpose of clamping the rivet and blocking the rivet insertion hole 11.

[0072] Each blocking piece 2 includes a blocking part 21 and a connecting part 22 connected to each other, and is arranged through the rivet setting body 1 and spaced apart in the circumferential direction of the rivet setting body 1, and at least part of each blocking part 21 extends into the rivet insertion hole 11. The return member 3 is connected to each connecting part 22 to provide a return force to the blocking piece 2. The return member 3 is configured to allow all the blocking pieces 2 to have a tendency to move away from each other under the action of an external force (such as the force applied by the tail of the rivet to the blocking piece 2 during the insertion of the rivet) to make the blocking part 21 exit the rivet insertion hole 11. The return member 3 is configured to make all the blocking pieces 2 have a tendency to move towards each other after the external force disappears through the return force, so that all the blocking pieces 2 move towards each other and abut.

[0073] For example, the blocking member 2 is switchable between a working state and a blocking state. In the blocking state, the blocking portions 21 are located within the rivet insertion hole 11 and are close to each other to form a block in the passage between the rivet insertion opening 111 and the rivet outlet opening 112 of the rivet insertion hole 11, so as to prevent the tail of the rivet from moving through the blocking portions 21 towards the rivet insertion opening 111. It should be noted that in the longitudinal section (a section perpendicular to the central axis C of the rivet insertion hole 11) of the riveting tip body 1 and in the blocking state, the blocking portions 21 can only block part of the rivet insertion hole 11 of the riveting tip body 1, as long as the tail of the rivet cannot freely move from the remaining area of the rivet insertion hole 11 which is not blocked. That is, the area of the remaining area of the rivet insertion hole 11 which is not blocked is smaller than the area of the tail of the rivet.

[0074] In the working state, the reset member 3 is configured to allow the blocking member 2 to have a tendency to move away from each other under the action of an external force. In a specific use process, the tail of the rivet will first enter the rivet insertion opening 111 of the rivet insertion hole 11, and the above-mentioned external force can be generated by the tail of the rivet pressing the blocking member 2 when the rivet is inserted into the rivet insertion hole 11. For example, when the reset member 3 is an elastic member, the blocking member 2 can move away from each other under the action of the external force to overcome the elastic force of the elastic member, and gradually exit the rivet insertion hole 11 to ensure that the tail of the rivet can smoothly enter.

[0075] In the blocking state, the reset member 3 is configured to provide a reset force to the blocking member 2, and the reset force is used to make the blocking member 2 have a tendency to move towards each other, so that the blocking member 2 automatically switches from the working state to the blocking state. For example, when the reset member 3 is an elastic member, the above-mentioned reset force is the elastic force of the elastic member, and the blocking member 2 moves towards each other under the action of the elastic force to extend into or insert into the rivet insertion hole 11 to block the tail of the broken rivet.

[0076] In summary, the reset force provided by the reset member 3 can ensure that the blocking member 2 automatically returns to the blocking state after the external force is removed or disappears, reducing the need for manual operation and improving the degree of automation and work efficiency. At the same time, it reduces the risk caused by human factors. Therefore, it improves the accuracy and safety of rivet insertion, especially in high-speed or automated operation, which can ensure that each rivet can enter the working position in sequence. In addition, the blocking member 2 can move towards each other under the action of an external force to exit the rivet insertion hole 11, so that the tail of the rivet can be smoothly inserted and clamped by the blocking member 2 under the action of the reset member 3. For example, the rivet insertion hole 11 has a central axis C.

[0077] Of course, in other embodiments of the present application, the blocking piece 2 can also be only one, when the rivet enters the rivet hole 11 and contacts the blocking piece 2, the reset piece 3 is configured to allow the blocking piece 2 to have a tendency to move in the direction of exiting the rivet hole 11 under the action of external force, thereby making the channel of the rivet hole 11 open for the rivet to pass through. After the rivet is completed, the reset piece 3 is configured to make the blocking piece 2 have a tendency to move in the direction of extending into the rivet hole 11 by the reset force after the external force disappears, so that the blocking piece 2 can block the channel between the rivet hole 111 and the rivet hole 112.

[0078] Please continue to refer to FIGS. 5-8, the blocking piece 2 has two. Two blocking pieces 2 can quickly move away to provide enough space for the tail of the rivet to pass through, and can quickly reset to clamp the tail of the rivet under the action of the reset force of the reset piece 3. At the same time, the double-blocking piece 2 structure uniformly disperses the force of the rivet to the two sides of the rivet body 1 arranged in the radial direction, avoiding damage to the single-sided blocking piece 2 due to excessive force. Thus, the stability of the feeding system can be improved, and the position of the rivet in subsequent work can be ensured to be accurate, and the assembly quality will not be affected by loosening.

[0079] In addition, the two blocking pieces 2 can be dynamically adjusted according to the diameter or shape of the tail of the rivet, allowing them to move away or close together to adapt to rivets of different sizes, which is beneficial to provide the application range of the rivet gun, without the need to frequently replace or adjust parts, and improve the versatility and operation efficiency of the rivet gun.

[0080] In combination with FIGS. 1-6, the connecting part 22 is located outside the rivet body 1 and connected with the reset piece 3, and the sidewall of the rivet body 1 is provided with a mounting through hole 12 penetrating through it, and the blocking part 21 is slidingly fitted in the mounting through hole 12, thereby realizing the assembly of the blocking piece 2 and ensuring that the installation of the blocking piece 2 is relatively simple and convenient. By using the above mode, the free adjustment of the blocking piece 2 can also be realized, ensuring that it can quickly respond to the switching between the working state and the blocking state. In addition, it can effectively avoid the shaking or misalignment of the blocking piece 2 during movement, ensuring that it always moves along the predetermined path.

[0081] Based on the above embodiments, the extension direction of the mounting through hole 12 is arranged vertically or obliquely relative to the central axis C of the rivet insertion hole 11. When the extension direction of the mounting through hole 12 is arranged vertically relative to the central axis C of the rivet insertion hole 11, the manufacturing process of the mounting through hole 12 can be ensured to be relatively simple. When the extension direction of the mounting through hole 12 is arranged obliquely relative to the central axis C of the rivet insertion hole 11, the blocking piece 2 can be obliquely slid out of or into the rivet insertion hole 11 of the riveting chuck body 1, avoiding the radial direction of the rivet insertion hole 11, which is beneficial to reduce the space required by the riveting chuck 10 in the radial direction, so that the size of the riveting chuck 10 can be further reduced, so that the riveting gun is small and portable. In addition, the oblique sliding can provide a certain lateral clamping force on the hole wall of the mounting through hole 12 when the blocking piece 2 enters the rivet insertion hole 11, so that the fixation of the tail of the rivet is more firm. It can also be understood that at least part of the blocking portion 21 of the blocking piece 2 is used in sliding cooperation with the mounting through hole 12.

[0082] As shown in FIGS. 16 and 17, the present embodiment also provides a riveting gun, which comprises a transmission mechanism 201, a riveting assembly 202, a clamping jaw 2023 and a clamping jaw sleeve 2022, and further comprises the riveting chuck of the above-mentioned embodiments, the transmission mechanism 201 is in transmission connection with the riveting assembly 202, the riveting assembly 202 is in transmission connection with the clamping jaw sleeve 2022, the clamping jaw sleeve 2022 is sleeved on the side of the clamping jaw, and the riveting chuck body 1 is arranged at the front end of the clamping jaw 2023. In the present embodiment, the riveting chuck body 1 is arranged at the front end of the clamping jaw 2023, so that after the rivet is inserted, the blocking piece clamps the rivet to prevent the rivet from falling off, and the rivet passing through the rivet insertion hole 11 can be grabbed by the clamping jaw. Under the action of the transmission mechanism 201, the riveting assembly 202 and the clamping jaw sleeve 2022, the clamping jaw 2023 grabs the rivet to realize rivet pulling operation, and the tail needle after the rivet is broken is blocked in the channel by the blocking piece. In the present embodiment, the riveting assembly 202 comprises a lead screw nut and a lead screw in transmission connection with the transmission mechanism, the lead screw nut is sleeved on the lead screw, and the front end of the lead screw can be directly connected with the rear end of the clamping jaw sleeve or connected with the clamping jaw sleeve through a connecting rod. When the transmission mechanism works, it drives the lead screw nut to rotate, thereby driving the lead screw to move backward. During the movement, the clamping jaw sleeve is pulled backward to move, thereby forcing the jaw plates of the clamping jaw to gradually close and tightly bite the rivet, so as to realize rivet pulling operation. After the rivet pulling operation is completed, the driving mechanism is rotated to make the lead screw rotate through the transmission mechanism, thereby driving the clamping jaw sleeve to reset. Under the action of the reset spring, the clamping jaw is reset to prepare for the next rivet pulling operation.

[0083] As shown in FIGS. 16 and 17, in order to avoid fixing the riveting chuck body, the present embodiment further comprises a sleeve 203, which is sleeved on the outside of the clamping jaw sleeve 2022. The sleeve 203 can be fixedly connected with the shell of the riveting gun, and the riveting chuck body 1 is movably and detachably connected with the sleeve 203. Specifically, the riveting chuck body 1 can be connected with the sleeve 203 in a manner of interference fit, clamp, thread and the like. In the present embodiment, the riveting chuck body 1 is connected with the sleeve 203 in a threaded manner.

[0084] In the embodiment, the blocking piece 2 can be arranged on the side wall of the rivet body 1 outside the front end of the sleeve; or, by arranging a step 206 which is inwardly sunken on the front end surface of the sleeve 203, the blocking piece 2 is arranged on the side wall of the rivet body 1 inside the sunken step.

[0085] In combination with FIGS. 6, 16 and 17, the rivet gun provided in the application comprises a shell 20, a sleeve 203 and a rivet gun rivet 10. The shell 20 is formed with a mounting space 20a inside, and the transmission mechanism 201 and the rivet assembly 202 are arranged in the mounting space 20a and are transmissionally connected. The sleeve 203 is connected with the shell 20. And the rivet gun rivet 10 as recorded in any of the technical solutions above. Wherein, the sleeve 203 is arranged on the outer circumferential side of the rivet body 1 and is connected with the rivet body 1.

[0086] Since the rivet gun rivet in the rivet gun provided in the application and the rivet gun rivet as recorded in any of the technical solutions above have the same structure, both can solve the same technical problems and achieve the same technical effects.

[0087] The insertion hole 11 has the insertion port 111 and the ejection port 112 which are oppositely arranged. The mounting ring 14 is arranged on the outer periphery of the rivet body 1 close to the insertion port 111. The abutting portion 13 is arranged on the side of the mounting ring 14 which is away from the insertion port 111. The through hole is arranged in the sleeve 203. The adapter ring is protruded on the hole wall of the sleeve 203 and is connected with the abutting portion 13. The end surface of the mounting ring 14 which is away from the insertion port 111 is abutted on the end surface of the sleeve 203 which is away from the shell 20, so as to realize the axial positioning of the rivet body 1 during installation.

[0088] Wherein, the rivet assembly 202 comprises the rivet mechanism 2021 and the jaw sleeve 2022 which are transmissionally connected. The jaw sleeve 2022 is sleeved on the circumferential side of the jaw 2023. The rivet body 1 is arranged on the front end of the jaw 2023 (close to one end of the insertion hole 11). In the specific use process, after the rivet is inserted, the blocking portion 21 of the blocking piece 2 clamps the tail of the rivet to avoid the rivet from falling. The tail of the rivet passes through the blocking portion 21 and is grabbed by the jaw arranged on the side of the ejection port 112. Under the joint action of the transmission mechanism 201, the rivet mechanism 2021 and the jaw sleeve 2022, the jaw 2023 grabs the rivet to realize the rivet operation. The tail after the rivet is broken is broken and is blocked in the channel between the blocking piece 2 and the ejection port 112 by the blocking piece 2, so as to effectively avoid the situation that the subsequent insertion is blocked.

[0089] In summary, the rivet gun nose is specially configured, i.e. a blocking piece 2 is arranged on the side wall of the rivet gun nose body 1, so that the blocking piece 2 can clamp the rivet when the rivet is inserted into the rivet hole 11, thus the rivet does not need to be manually held during riveting, and the rivet gun riveting operation is facilitated, especially for high-altitude and special occasions. In addition, after the rivet is broken, the tail needle is blocked by the blocking piece of the rivet gun nose and stays in the guide pipe, and during the continuous riveting operation, the newly generated tail needle knocks the end of the previous tail needle, so that the previous tail needle is hit into the rivet collecting barrel, thus the effect of automatic collection of the rivet can be achieved.

[0090] In the specific use process, the rivet hole has a rivet inlet and a rivet outlet opposite to each other, and the rivet enters the rivet hole from the rivet inlet. When the rivet gun is used for riveting, the tail of the rivet will extrude the blocking piece during insertion into the rivet hole, so that the blocking piece moves in the direction of exiting the rivet hole, and at the same time, the tail of the rivet is clamped by the blocking piece under the resetting force of the resetting piece, so as to avoid the situation that the rivet falls off.

[0091] During the riveting process, the riveting assembly moves the tail of the rivet in the direction close to the rivet outlet, and continues to move in the direction close to the rivet outlet after the tail of the rivet is broken, until the tail of the rivet is separated from the blocking piece. At this time, the blocking piece moves in the direction of extending into the rivet hole under the resetting force of the resetting piece, so that the blocking part of the blocking piece can block the channel between the rivet inlet and the rivet outlet, so as to block the rivet hole and prevent the tail of the rivet from moving through the blocking piece towards the rivet inlet of the rivet gun nose. In other words, the blocking part can block the tail of the rivet from moving towards the rivet inlet of the rivet gun nose, so as to ensure that the next rivet can be normally riveted, thereby improving the working efficiency of the rivet gun.

[0092] It should be noted that although the above embodiments have been described in this paper, the patent protection scope of the present application is not limited thereby. Therefore, based on the innovative idea of the present application, the changes and modifications of the embodiments described in this paper, or the equivalent structure or equivalent process transformation made by using the contents of the present application specification and drawings, directly or indirectly, apply the above technical solutions to other related technical fields, are all included in the patent protection scope of the present application.

[0093] Reference signs in the drawings:

[0094] 1, rivet gun nose body; 11, rivet hole; 2, blocking piece; 2111, vertical surface; 2121, second inclined surface; 221, clamping groove; 31, O-ring; 201, transmission mechanism; 202, riveting assembly; 2023, clamping jaw; 2022, clamping jaw sleeve; 203, outer sleeve; 206, step; C, center axis;

[0095] 111, pin inlet; 112, pin outlet; 12, mounting through hole; 13, abutting portion; 14, mounting ring; 21, blocking portion; 211, blocking surface; 212, guide surface; 22, connecting portion; 3, reset member; 10, rivet gun rivet nose; 20, housing; 20a, mounting space; 2021, pull rivet mechanism.

Claims

1. A nosepiece for a rivet gun, comprising: The rivet body is provided with a blocking piece, one end of the blocking piece extends into the rivet body, and the other end of the blocking piece is provided with a reset piece.

2. The rivet gun nosepiece of claim 1 wherein, One end of the blocking piece in the rivet body is a vertical surface away from the rivet end.

3. The rivet gun nosepiece of claim 1 wherein, One end of the blocking piece in the rivet body is a first inclined surface away from the rivet end.

4. The rivet gun nosepiece of any one of claims 1-3, wherein, One end of the blocking piece in the rivet body is a second inclined surface away from the rivet end.

5. The rivet gun nosepiece of any one of claims 1-4, wherein, The reset piece is arranged on the side of the rivet body, and the reset piece is elastically connected to the other end of the blocking piece.

6. The rivet gun nosepiece of any one of claims 1-5, wherein, The reset piece is an O-shaped ring, and the other end of the blocking piece extends out of the rivet body, and the O-shaped ring is sleeved on the end of the blocking piece extending out of the rivet body.

7. The rivet gun nosepiece of claim 6 wherein, The end of the blocking piece on one end of the outer wall of the rivet body is provided with a clamping groove, and the O-shaped ring is sleeved in the clamping groove.

8. The rivet gun nosepiece of any one of claims 1-7, wherein, The blocking piece is two, and the two blocking pieces are symmetrically arranged on the side wall of the rivet body.

9. A rivet gun comprising a drive mechanism, a pull rivet assembly, a collet and a collet sleeve, further comprising: The rivet gun rivet of any one of claims 1-8, the transmission mechanism is in transmission connection with the rivet gun assembly, the rivet gun assembly is in transmission connection with the jaw sleeve, the jaw sleeve is sleeved on the side of the jaw, and the rivet body is arranged on the front end of the jaw.

10. The rivet gun of claim 9, wherein, Further comprising a sleeve, the sleeve is sleeved on the outside of the jaw sleeve, and the rivet body is movably and detachably connected with the sleeve.

11. The rivet gun of claim 10, wherein, The blocking piece is arranged on the side wall of the rivet body outside the front end of the sleeve.

12. The rivet gun of claim 10, wherein, The front end surface of the sleeve is provided with a step sunken inward, and the blocking piece is arranged on the side wall of the rivet body in the sunken step.

13. A rivet gun rivet, comprising: a rivet body, a rivet hole penetrating through the rivet body in the axial direction is formed in the rivet body, and the rivet hole has a rivet inlet and a rivet outlet opposite to each other; a blocking piece, the blocking piece comprises a blocking part and a connecting part connected with each other, and the blocking piece is arranged in the rivet body, and at least part of the blocking part extends into the rivet hole; a reset piece, the reset piece is connected with the connecting part to provide a reset force to the blocking piece, and the length of the blocking piece extending into the rivet hole is adjusted; the reset piece is configured to allow the blocking piece to have a tendency to move in the direction of exiting the rivet hole under the action of an external force; the reset piece is configured to allow the blocking piece to have a tendency to move in the direction of extending into the rivet hole through the reset force after the external force disappears, so that the blocking piece can block the passage between the rivet inlet and the rivet outlet.

14. The rivet gun nosepiece of claim 13 wherein, the blocking piece has at least two, each blocking piece comprises a blocking part and a connecting part connected with each other, and each blocking piece is arranged in the rivet body and is arranged at intervals around the circumference of the rivet body, at least part of each blocking part extends into the rivet hole, and each connecting part is connected with the reset piece; wherein, the reset piece is configured to allow all the blocking pieces to have a tendency to move in the direction of moving away from each other under the action of an external force; the reset piece is configured to allow all the blocking pieces to have a tendency to move in the direction of moving close to each other through the reset force after the external force disappears, so that all the blocking pieces move close to each other and abut.

15. The rivet gun nosepiece of claim 13 wherein, The blocking part has a blocking surface facing the ejection opening, the blocking surface is perpendicular to the central axis of the insertion hole, and the blocking surface is a flat surface or a concave-convex surface.

16. The rivet gun nosepiece of claim 13 wherein, The blocking part has a blocking surface facing the ejection opening, the blocking surface is a flat surface, and the blocking surface is arranged obliquely relative to the central axis of the insertion hole.

17. The rivet gun nosepiece of claim 16 wherein, From the edge of the insertion hole to the central axis of the insertion hole, the axial distance between the blocking surface and the ejection opening gradually increases, the blocking surface and the longitudinal section of the riveting nozzle body form a first included angle α, and the first included angle α satisfies: 0 degrees < α ≤ 15 degrees; or From the edge of the insertion hole to the central axis of the insertion hole, the axial distance between the blocking surface and the ejection opening gradually decreases, the blocking surface and the longitudinal section of the riveting nozzle body form a second included angle β, and the second included angle β satisfies: 0 degrees < β ≤ 60 degrees.

18. The rivet gun nosepiece of claim 13 wherein, The connecting part is located outside the riveting nozzle body and is connected with the reset member, the riveting nozzle body is provided with a mounting through hole penetrating through the side wall thereof, and the blocking part is slidingly fitted in the mounting through hole.

19. The rivet gun nosepiece of claim 18 wherein, The extension direction of the mounting through hole is arranged perpendicularly or obliquely relative to the central axis of the insertion hole.

20. The rivet gun nosepiece of claim 13 wherein, The reset member is an elastic member, and the elastic member is used to provide the blocking member with an elastic force in the direction of moving towards each other.

21. The rivet gun nosepiece of claim 13 wherein, The reset member is an O-shaped ring, the outer circumferential side of the connecting part, which faces away from the blocking part, is provided with a clamping groove, the clamping groove extends around the circumference of the insertion hole, the O-shaped ring is arranged on the outer circumference of the riveting nozzle body and is at least partially located in the clamping groove.

22. The rivet gun nosepiece of claim 13 wherein, The connecting part is in the shape of an arc extending along the circumference of the riveting nozzle body, and the connecting part is matched with the outer side surface of the riveting nozzle body.

23. The rivet gun nosepiece of claim 13 wherein, The outer circumference of the riveting nozzle body is provided with a butt joint part, the butt joint part is arranged on the side of the blocking member close to the ejection opening, and the butt joint part is used to be connected with the outer sleeve.

24. The rivet gun nosepiece of claim 13 wherein, The blocking part has a guiding surface facing the insertion opening, and from the edge of the insertion hole to the central axis of the insertion hole, the axial distance between the guiding surface and the insertion opening gradually increases.

25. The rivet gun nosepiece of claim 13 wherein, The insertion hole is used to provide a movement channel for a rivet, the reset member is configured to allow the blocking member to have a tendency to move in the direction of exiting the insertion hole under the action of an external force of the tail of the rivet, and after the tail of the rivet is inserted, the blocking member can clamp the tail of the rivet under the action of the reset force.

26. A rivet gun, comprising: a housing, a mounting space is formed in the housing, a transmission mechanism and a rivet assembly are arranged in the mounting space and are connected in transmission; an outer sleeve connected with the housing; and a riveting nozzle according to any one of claims 13 to 25; wherein the outer sleeve is arranged on the outer circumferential side of the riveting nozzle body and is connected with the riveting nozzle body. The insertion hole has an insertion opening and an ejection opening arranged opposite to each other, the riveting nozzle body is provided with a mounting ring on the outer circumference close to the insertion opening, the side of the mounting ring facing away from the insertion opening is provided with a butt joint part, the outer sleeve is provided with a through hole, and a matching ring is protrudingly arranged on the hole wall of the outer sleeve, the matching ring is connected with the butt joint part; 27. The rivet gun of claim 26, wherein, ​ The end surface of the mounting ring, which faces away from the nail inlet, abuts against the end surface of the outer sleeve, which faces away from the housing.

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