CN115921750A - Novel automatic riveter rifle body - Google Patents

Abstract

The invention relates to a novel automatic rivet gun body, which comprises: the upper nail base is provided with a first upper nail through hole and a second upper nail through hole; one end of the upper nail base, which is positioned in the axial direction of the second upper nail through hole, is provided with an upper nail assembly which conveys the rivet positioned in the second upper nail through hole to the other end and movably clamps the rivet; a gun head assembly used for receiving and clamping the rivet conveyed by the upper nail assembly is arranged at the other end of the upper nail base, which is positioned in the axial direction of the second upper nail through hole; the upper nail assembly is provided with a snapping assembly which snaps the rivet clamped by the upper nail assembly and sucks the snapped rivet; the invention has high nailing efficiency, reliable use, stability and labor saving.

Description

Novel automatic riveter rifle body

Technical Field

The utility model discloses riveter technical field, more specifically says, it relates to a novel automatic riveter rifle body.

Background

The rivet gun is used for fastening and riveting various metal plates, pipes and other manufacturing industries, and is widely used for riveting electromechanical and light industrial products such as automobiles, aviation, railways, refrigeration, elevators, switches, instruments, furniture, decoration and the like at present. The rivet gun is developed for overcoming the defects that a nut is easy to melt and an internal thread is easy to slip when a metal thin plate and a thin pipe are welded, and the like.

The existing riveting gun has two main types, one is that a rivet is manually placed at a gun head to be clamped, and then the rivet is broken (such as patent No. CN 20756672U, riveting gun); the other method is to put the rivet into the gun head through a binding component capable of sliding back and forth to clamp the rivet, and then to break the rivet. The manual nail placing efficiency is low, the nail is placed through the binding part, the defect that the manual nail placing efficiency is low is overcome, however, due to the fact that the binding part slides forwards and backwards, the plate needing to be riveted is easy to impact when the nail is placed (the plate is not suitable for being used by a manipulator), large inertia vibration is generated in the moment of forward and backward sliding switching, the plate is easy to hold and is not firm, and the hand is sour and soft when the plate is used for a short time.

Patent No. CN115502320A, an automatic rivet gun body, although can realize automatic nailing, it needs to suck away the broken rivet tail with the help of an external vacuum pump, and it needs to select a cylinder with a longer stroke, and the structure is to be optimized.

Disclosure of Invention

Aiming at the defects in the prior art, the invention aims to provide a novel automatic riveter gun body which has the advantages of high nailing efficiency, reliable use, stability, labor saving, compact structure and no need of an external vacuum pump.

The technical purpose of the invention is realized by the following technical scheme:

a novel automatic riveter rifle body, includes: the upper nail base is provided with a first upper nail through hole and a second upper nail through hole; one end of the upper nail base, which is positioned in the axial direction of the second upper nail through hole, is provided with an upper nail assembly which conveys the rivet positioned in the second upper nail through hole to the other end and movably clamps the rivet; a gun head assembly used for receiving and clamping the rivet conveyed by the upper nail assembly is arranged at the other end of the upper nail base, which is positioned in the axial direction of the second upper nail through hole; and the upper nail component is provided with a snapping component which snaps the rivet clamped by the upper nail component and sucks the snapped rivet.

Optionally, the upper nail assembly comprises: the device comprises a first cylinder body, a first piston, a second cylinder body, a second piston and a nail sucking pipe; one end of the first piston is positioned in the first cylinder body and is in sliding connection with the first cylinder body; one end of the second cylinder body is positioned in the first piston and is in sliding connection with the first piston; one end of the second piston is positioned in the second cylinder body and is connected with the second cylinder body in a sliding manner; one end of the nail suction pipe is positioned in the second piston and is connected with the second piston in a sliding way; one end of the first cylinder body is fixedly connected with the snapping assembly, and the other end of the first cylinder body is fixedly connected with one end of the upper nail base; one end of the first piston, which is close to the upper nail base, is detachably provided with a guide nozzle; one end of the second piston, which is close to the upper nail base, is detachably provided with a connecting shaft; a gun head claw sleeve is detachably arranged on the connecting shaft; a claw cavity is formed in the claw sleeve of the gun head; a clamping jaw is movably arranged in the clamping jaw cavity; a T-shaped through hole is formed in the connecting shaft; the T-shaped through hole is communicated with the jaw cavity; a top cylinder is movably arranged in the jaw cavity; a top barrel spring is movably arranged in the T-shaped through hole; one end of the top barrel spring abuts against the inner wall of the T-shaped through hole, and the other end of the top barrel spring abuts against the top barrel; the top cylinder abuts against the clamping jaw; the outer wall of the clamping jaw tightly abuts against the clamping jaw cavity; the nail suction pipe is communicated with the T-shaped through hole; the nail suction pipe is detachably connected with the snapping assembly.

Optionally, the first piston divides the inner space of the first cylinder into a first cavity and a second cavity; the second piston divides the inner space of the second cylinder into a third cavity and a fourth cavity; one end of the second cylinder body is provided with a sub air inlet for guiding the compressed air positioned in the first cavity into the third cavity; when the volume of the first cavity is minimum, the compressed gas in the first cavity cannot be guided into the third cavity through the sub air inlet.

Optionally, a first inclined plane facilitating the opening of the jaw is arranged at one end of the guide nozzle, and a guide arc surface facilitating the rivet to enter the center of the jaw is arranged at the other end of the guide nozzle; and a second inclined plane matched with the first inclined plane is arranged on the clamping jaw.

Optionally, the jaw is tapered, and a third inclined surface adapted to the taper is arranged on the inner wall of the jaw cavity.

Optionally, the snap-off assembly includes: a third cylinder body and a third piston which are provided with a fifth cavity and a sixth cavity; one end of the third piston is positioned in the fifth cavity, the other end of the third piston is positioned in the sixth cavity, and one end of the third piston is connected with the third cylinder in a sliding manner; the third cylinder body is fixedly connected with the first cylinder body; an extension rod of the third piston is detachably connected with the second cylinder body; a tail nail through hole for discharging a tail nail out of the gun body is formed in the extension rod of the third piston; an air pipe joint is arranged on the third cylinder body; the air pipe joint is sleeved at one end of an extension rod of the third piston; a Laval nozzle is arranged at the other end of the extension rod of the third piston and is positioned in the tail nail through hole; an extension rod of the third piston is provided with a vacuum suction hole; the tail nail through hole is communicated with the sixth cavity through the vacuum suction hole; the third cylinder body is provided with a special-shaped through hole for guiding compressed gas into the sixth cavity; the nail suction pipe is detachably connected with the extension rod of the third piston.

Optionally, a handle is arranged at the bottom of the first cylinder body; the handle is provided with a switch.

Optionally, the lance head assembly includes: the rivet feeding device comprises a rivet gun head, a chuck spring, a chuck nut, a rivet feeding chuck and a rubber ring; one end of the rivet gun head is fixedly connected with the upper nail base; the chuck spring is sleeved and tightly propped against the other end of the rivet gun head; the nail feeding chuck is sleeved and tightly propped against the chuck spring; one end of the chuck nut is detachably connected with the rivet gun head, and the other end of the chuck nut is clamped with the nail feeding chuck; the rubber ring is sleeved with the nail feeding chuck.

In conclusion, the invention has the following beneficial effects: 1) The nailing efficiency is high, the use is reliable, stable and labor-saving; 2) The rivet installing structure and the locking structure in the rivet loading assembly are combined into a whole, so that the gun body of the automatic rivet gun is more compact and attractive; 3) The process of binding and locking is smooth, and the reliability is guaranteed; 4) The broken tail nails cannot be scattered around, so that collection and management are facilitated; 5) The clamping force of the nail feeding chuck is adjustable, and the nail feeding chuck is suitable for rivets of different specifications.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the structure of the upper nail base in the present invention;

FIG. 3 is an exploded view of the staple feeding assembly and the snap-off assembly of the present invention;

FIG. 4 is a cross-sectional view of the present invention;

FIG. 5 is an enlarged schematic view of area A of FIG. 4;

FIG. 6 is an enlarged schematic view of region B of FIG. 4;

FIG. 7 is an enlarged schematic view of region C of FIG. 4;

FIG. 8 is a schematic view of the compressed air flow in area D of FIG. 7;

FIG. 9 is an exploded view I of the action of the present invention;

FIG. 10 is an exploded view of the action of the present invention II;

FIG. 11 is an exploded view of the action of the present invention III;

FIG. 12 is an exploded view IV of the invention;

FIG. 13 is an exploded view of the action of the present invention;

FIG. 14 is an exploded view VI of the invention;

FIG. 15 is an exploded view VII of the motion of the present invention;

FIG. 16 is an enlarged schematic view of area E of FIG. 10;

FIG. 17 is a partial schematic view of the present invention;

FIG. 18 is an exploded view of the nail cartridge of the present invention;

FIG. 19 is an exploded view of the jaws of the present invention;

FIG. 20 is a schematic view of a Laval nozzle according to the present invention.

In the figure: 1. a nail mounting base; 11. a first upper nail through hole; 12. a second upper nail through hole; 2. a nail feeding assembly; 21. a first cylinder; 211. a first cavity; 212. a second cavity; 213. a handle; 214. a switch; 22. a first piston; 221. a guide nozzle; 2211. a first inclined plane; 2212. a guiding cambered surface; 23. a second cylinder; 231. a third cavity; 232. a fourth cavity; 233. a sub-inlet aperture; 24. a second piston; 241. a connecting shaft; 2411. a T-shaped through hole; 242. a gun head claw sleeve; 2421. a jaw cavity; 24211. a third inclined plane; 243. a claw; 2431. a second inclined surface; 244. a top cylinder; 245. a top barrel spring; 25. a nail suction pipe; 3. a gun head assembly; 31. a rivet gun head; 32. a collet spring; 33. a collet nut; 34. a nail feeding chuck; 35. a rubber ring; 4. snapping the assembly; 41. a third cylinder; 411. a fifth cavity; 412. a sixth cavity; 413. a gas pipe joint; 414. a special-shaped through hole air inlet; 42. a third piston; 421. a tail nail through hole; 422. a vacuum suction hole; 43. a laval nozzle; 44. a return spring; 5. a joint assembly; 51. a first joint; 52. a second joint; 53. a third joint; 54. and a fourth joint.

Detailed Description

In order to make the objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in detail below. Several embodiments of the invention are presented in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present invention, unless otherwise explicitly stated or limited, the terms "mounted," "connected," "fixed," and the like are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations. The terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

In the present invention, unless expressly stated or limited otherwise, the recitation of a first feature "on" or "under" a second feature may include the recitation of the first and second features being in direct contact, and may also include the recitation that the first and second features are not in direct contact, but are in contact via another feature between them. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. "beneath," "under" and "beneath" a first feature includes the first feature being directly beneath and obliquely beneath the second feature, or simply indicating that the first feature is at a lesser elevation than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not intended to indicate or imply that the referenced devices or elements must be in a particular orientation, configuration, and operation, and therefore should not be construed as limiting the present invention.

The invention is described in detail below with reference to the figures and examples.

The invention provides a novel automatic rivet gun body, as shown in figures 1-2, comprising: the upper nail base 1 is provided with a first upper nail through hole 11 and a second upper nail through hole 12; an upper nail component 2 which conveys the rivet in the second upper nail through hole 12 to the other end and movably clamps is arranged at one end of the upper nail base 1 in the axial direction of the second upper nail through hole 12; a gun head assembly 3 for receiving and clamping rivets conveyed by the upper nail assembly 2 is arranged at the other end of the upper nail base 1 in the axial direction of the second upper nail through hole 12; the upper nail component 2 is provided with a snapping component 4 which snaps the rivet clamped by the upper nail component 2 and sucks the snapped rivet.

The novel automatic rivet gun body comprises four parts from left to right, a gun head assembly 3 is fixed at the left end of an upper nail base 1 through threads, the left end of an upper nail assembly 2 is fixed at the right end of the upper nail base 1 through screws, and the left end of a snapping assembly 4 is fixed at the right end of the upper nail assembly 2 through screws. The automatic rivet gun body of the invention needs to be matched with a control outer box (not shown in the attached drawing) for use, and a PLC (programmable logic controller), a human-computer interface, a nail feeding device, an air compressor, a hydraulic pump, an electromagnetic valve and other components are arranged in the control outer box, and a vacuum pump is not needed to be arranged. The air compressor on the control outer box is communicated with the joint component 5 (shown in figure 17) through a conduit; specifically, a first joint 51, a second joint 52 and a fourth joint 54 are communicated with an air compressor through a conduit and an electromagnetic valve; the third connector 53 is in communication with the hydraulic pump via a conduit and a solenoid valve. The nail feeding device on the control outer box is connected with a first upper nail through hole 11 of the upper nail base 1 through a guide pipe, the hydraulic pump on the control outer box is connected with the snapping component 4 through the guide pipe and an electromagnetic valve, and the PLC on the control outer box is electrically connected with the upper nail component 2 through a lead.

The rivet feeding device conveys the rivet into the first upper rivet through hole 11 through a guide pipe, the rivet falls into the second upper rivet through hole 12, the upper rivet assembly 2 then pushes the rivet to the gun head assembly 3, and the gun head assembly 3 is in a standby state after clamping the rivet; when the PLC receives the snapping instruction, the snapping component 4 is controlled to act to snap the rivet, and the snapped rivet is sucked away, so that the rivet is fixed on the metal plate.

According to the automatic rivet gun, the rivet is ejected out from the interior of the gun head component 3 through the rivet feeding component 2 to clamp the gun head component 3, so that the defect that the existing rivet loading component feeds the rivet from the exterior of the gun head component 3 to clamp the gun head component 3 is overcome, and the structure of the automatic rivet gun is more compact. When the automatic riveting machine is matched with a manipulator for use, the distance between the gun head assembly 3 and a metal plate can be shortened, the defect that the manipulator needs to move backwards from a reference position and reset forwards to the reference position after the gun head assembly 3 clamps a rivet is overcome, and the automatic riveting machine has the advantages of high nailing efficiency, reliability in use, stability and labor saving.

Further, the upper nail assembly 2 comprises: the device comprises a first cylinder 21, a first piston 22, a second cylinder 23, a second piston 24 and a nail sucking pipe 25; one end of the first piston 22 is located in the first cylinder 21 and is slidably connected with the first cylinder 21; one end of the second cylinder 23 is located in the first piston 22 and is connected with the first piston 22 in a sliding manner; one end of the second piston 24 is located in the second cylinder 23 and is slidably connected with the second cylinder 23; one end of the nail sucking pipe 25 is positioned in the second piston 24 and is connected with the second piston 24 in a sliding way; one end of the first cylinder 21 is fixedly connected with the snapping component 4, and the other end of the first cylinder is fixedly connected with one end of the upper nail base 1; one end of the first piston 22 close to the upper nail base 1 is detachably provided with a guide nozzle 221; a connecting shaft 241 is detachably arranged at one end of the second piston 24 close to the upper nail base 1; a gun head claw sleeve 242 is detachably arranged on the connecting shaft 241; a claw cavity 2421 is formed in the gun head claw sleeve 242; a clamping jaw 243 is movably arranged in the clamping jaw cavity 2421; a T-shaped through hole 2411 is formed in the connecting shaft 241; the T-shaped through hole 2411 is communicated with the clamping claw cavity 2421; a top cylinder 244 is movably arranged in the jaw cavity 2421; a top barrel spring 245 is movably arranged in the T-shaped through hole 2411; one end of the top cylinder spring 245 abuts against the inner wall of the T-shaped through hole 2411, and the other end abuts against the top cylinder 244; the top barrel 244 abuts against the clamping jaws 243; the outer wall of the jaw 243 abuts against the jaw cavity 2421; the nail suction pipe 25 is communicated with the T-shaped through hole 2411; the nail suction pipe 25 is detachably connected with the snapping component 4.

As shown in fig. 3-8, the main body of the upper nail assembly 2 is a first cylinder 21 and a first piston 22, and a guide nozzle 221 is connected to the left end of the first piston 22 through a thread; the guide nozzle 221 and the left end of the first piston 22 slide left and right in the second upper nail through hole 12 (as shown in fig. 5). Most of the left end of the second cylinder 23 is located in the first piston 22, and the second cylinder 23 can slide left and right in the first piston 22, that is, the first piston 22 is sleeved on the left end of the second cylinder 23. Most of the right end of the second piston 24 is located in the second cylinder 23, and the second piston 24 can slide left and right in the second cylinder 23, that is, the right end of the second piston 24 is sleeved in the second cylinder 23. A connecting shaft 241 is connected to the left end of the second piston 24 through a thread, and a T-shaped through hole 2411 (shown in fig. 5) is formed in the connecting shaft 241; the left end of the connecting shaft 241 is in threaded connection with a gun head claw sleeve 242; the jaws 243 and the top barrel 244 are movably positioned in the jaw cavities 2421; the claw 243 is composed of three separated locking blocks, when the top cylinder 244 is pressed against the claw 243 leftwards under the action of the top cylinder spring 245, the claw 243 is in a locking state, so that the tail of the rivet is locked, and when the guide nozzle 221 is pressed against the claw 243 rightwards, the claw 243 is in a loosening state, so that the tail of the rivet enters the claw 243. Most of the left end of the nail suction pipe 25 is located in the second piston 24, and the nail suction pipe 25 can slide left and right in the second piston 24, that is, the second piston 24 is sleeved on the left end of the nail suction pipe 25. The right end of the nail suction pipe 25 and the right end of the second cylinder 23 are connected with a third piston 42 in the snapping assembly 4 through threads (as shown in fig. 6), that is, the nail suction pipe 25 and the second cylinder 23 are in a relatively fixed state, and slide leftwards or rightwards simultaneously under the action of the snapping assembly 4.

The upper part assembly 2 realizes the functions of binding and locking by arranging a structure of primary and secondary pistons, namely, the first piston 22 slides leftwards (primary piston) to eject the rivet and the second piston 24 slides rightwards (secondary piston) to lock the rivet, combines the binding structure and the locking structure into a whole, makes the gun body of the automatic rivet gun more compact and beautiful, and overcomes the defects that the existing binding part is arranged outside the gun body in an externally-hung manner, and the matching use with a manipulator is not attractive and is influenced.

Further, the first piston 22 divides the inner space of the first cylinder 21 into a first cavity 211 and a second cavity 212; the second piston 24 divides the inner space of the second cylinder 23 into a third chamber 231 and a fourth chamber 232; a sub air inlet 233 for guiding the compressed air in the first cavity 211 into the third cavity 231 is formed at one end of the second cylinder 23; when the volume of the first chamber 211 is the minimum, the compressed air in the first chamber 211 cannot be introduced into the third chamber 231 through the sub air inlet 233.

As shown in fig. 10, 11 and 16, a sub air inlet hole 233 is formed at the bottom of the right end of the second cylinder 23, and the sub air inlet hole 233 connects the first cavity 211 and the third cavity 231. However, when the first piston 22 is located at the right end limit position, the first piston 22 just blocks the sub air inlet hole 233, so that the compressed air in the first cavity 211 cannot enter the third cavity 231 through the sub air inlet hole 233; when the first piston 22 gradually slides to the left, the first piston 22 no longer blocks the sub air inlet holes 233, so that the compressed air in the first cavity 211 enters the third cavity 231 through the sub air inlet holes 233, and the compressed air entering the third cavity 231 further pushes the second piston 24 to slide to the left.

The sub intake holes 233 in the present invention make the second piston 24 slide to the left with the first piston 22 later; during the process that the first piston 22 slides leftwards, the guide mouth 221 adjusts the position of the rivet, then the second piston 24 slides leftwards, so that the clamping jaws 243 (the clamping jaws 243 are in a locked state at this time) push the rivet to clamp the gun head assembly 3, then the clamping jaws 243 slide leftwards to abut against the right end of the guide mouth 221, and then the clamping jaws 243 are in an unlocked state, so that the tail of the rivet is allowed to enter the insides of the clamping jaws 243.

Further, a first inclined surface 2211 for facilitating the opening of the jaws 243 is arranged at one end of the guide nozzle 221, and a guide arc surface 2212 for facilitating the entry of the rivet into the center of the jaws 243 is arranged at the other end; a second inclined surface 2431 matched with the first inclined surface 2211 is arranged on the claw 243.

Further, the jaw 243 is tapered, and a third slope 24211 that is adapted to be tapered is provided on an inner wall of the jaw cavity 2421.

As shown in fig. 5, the right side of the guide nozzle 221 is provided with a first inclined surface 2211, and the left side is provided with a bell-mouth-shaped guide arc surface 2212; the left side of the jaw 243 is provided with a second inclined surface 2431; when the claw 243 is just abutting against the guide nozzle 221, the claw 243 is in a locked (closed) state; when the second piston 24 continues to move leftward, the jaws 243 are opened by the cooperation of the first and second inclined surfaces 2211 and 2431, and the tail end of the rivet enters the engagement holes of the jaws 243; when the second piston 24 moves rightwards in the opposite direction, the gun head claw sleeve 242 drives the claw 243 to move rightwards, because the claw 243 is conical and the third inclined surface 24211 exists, the claw 243 locks the tail end of the rivet when moving rightwards, and the tail end of the rivet is broken when moving to a certain position.

The first inclined surface 2211 and the second inclined surface 2431 in the invention are matched to reduce the resistance of the claw 243 during opening, so that the opening process of the claw 243 is smoother; the engagement of the third ramp 24211 with the tapered surface of the jaw 243 reduces the resistance of the jaw 243 to closing, so that the closing process of the jaw 243 is smoother.

Further, the snapping assembly 4 comprises: a third cylinder 41 and a third piston 42 having a fifth chamber 411 and a sixth chamber 412; one end of the third piston 42 is located in the fifth cavity 411, the other end is located in the sixth cavity 412, and one end is slidably connected to the third cylinder 41; the third cylinder 41 is fixedly connected with the first cylinder 21; the extension rod of the third piston 42 is detachably connected with the second cylinder 23; a tail nail through hole 421 for discharging a tail nail out of the gun body is formed on the extension rod of the third piston 42; an air pipe joint 413 is arranged on the third cylinder 41; the air pipe joint 413 is sleeved at one end of an extending rod of the third piston 42; a laval nozzle 43 is arranged at the other end of the extending rod of the third piston 42, and the laval nozzle 43 is positioned in the tail nail through hole 421; a vacuum suction hole 422 is formed on the extension rod of the third piston 42; the tail nail through hole 421 is communicated with the sixth cavity 412 through the vacuum suction hole 422; a special-shaped through hole for introducing compressed gas into the sixth cavity 412 is formed in the third cylinder 41; the nail sucking pipe 25 is detachably connected with the extending rod of the third piston 42.

As shown in fig. 7-8, a tail nail through hole 421 is formed in the extension rod of the third piston 42, and the left end of the extension rod of the third piston 42 is respectively in threaded connection with the second cylinder 23 and the nail suction pipe 25; the right end is sleeved by an air pipe joint 413. In this embodiment, the bottom of the third cylinder 41 has only one oil inlet, and oil is fed through the third joint 53 (as shown in fig. 17), so as to push the third piston 42 to slide rightward; when the hydraulic pump in the control box removes the oil pressure, the return spring 44 pushes the third piston 42 to slide to the left limit position. In another embodiment, two oil inlet holes may be provided at the bottom of the third cylinder 41 to realize the leftward or rightward sliding of the third piston 42.

Another innovation of the invention is: a laval nozzle 43 is sleeved on the left side of the extending rod of the third piston 42, and during the process that compressed air in the sixth cavity 412 flows into the tail nail through hole 421 through the vacuum suction hole 422, the laval nozzle 43 generates a rightward vacuum suction force to suck the rivet into the claw 243 and suck the broken tail nail into the tail nail through hole 421, and then the broken tail nail is discharged out of the gun body. The right end of the laval nozzle 43 is tapered, and a gap exists between the right end and the inner wall of the extension rod of the third piston 42 (i.e., the outer wall of the tail nail through hole 421), and compressed gas flows into the vacuum suction hole 422 from the sixth cavity 412, then strikes the outer wall of the laval nozzle 43, and further flows into the tail nail through hole 421 through the gap, so that the laval nozzle 43 generates a rightward vacuum suction force, and the principle is as shown in fig. 8; wherein the compressed air in the sixth chamber 412 is introduced through the shaped through hole (the shaped hole air inlet 414 in fig. 7 is the inner air inlet thereof, and the fourth joint 54 in fig. 17 is the outer air inlet thereof) provided at the bottom of the third cylinder 41.

The third piston 42 exerts pulling force to break the rivet, and sucks the broken rivet tail to a tail nail collecting position, so that tail nails can be conveniently collected, and the tail nails are prevented from scattering around the environment in a manner similar to a cartridge case; in addition, due to the Laval nozzle 43, a vacuum pump does not need to be installed in the control outer box, the size of the control outer box is reduced, and the equipment cost is also reduced.

Further, a handle 213 is provided at the bottom of the first cylinder 21; a switch 214 is provided on the handle 213.

The switch 214 may be a pneumatic switch or a conventional conductive switch, and is mainly used to input a snap signal to the PLC controller, and the PLC controller switches the air intake direction of the electromagnetic valve after receiving the control signal, so that the first piston 22 slides leftward. In another embodiment, a hydraulic pump (for driving the third piston 42 to slide leftward) in the control outer case may be installed at the bottom of the handle 213.

Further, the lance tip assembly 3 comprises: the rivet gun head 31, the chuck spring 32, the chuck nut 33, the nail feeding chuck 34 and the rubber ring 35; one end of the rivet gun head 31 is fixedly connected with the upper rivet base 1; the chuck spring 32 is sleeved and tightly propped against the other end of the rivet gun head 31; the nail feeding chuck 34 is sleeved and tightly propped against the chuck spring 32; one end of the chuck nut 33 is detachably connected with the rivet gun head 31, and the other end of the chuck nut is clamped with the nail feeding chuck 34; the rubber ring 35 is sleeved on the nail feeding chuck 34.

As shown in fig. 5, the right end of the rivet gun head 31 is fixed to the upper nail base 1 by a screw, the collet nut 33 is fixed to the rivet gun head 31 by a screw, and the nail feeding collet 34 is movably locked to the rivet gun head 31 by the collet nut 33. Under the action of the abutting of the collet spring 32, the nail feeding collet 34 is in a normally closed state, when the rivet is pushed leftwards by the guide nozzle 22, the rivet abuts against the inner wall of the nail feeding collet 34, and the nail collet 34 is ejected; when the rivet cap is ejected out of the interior cavity of the nail feed collet 34, the collet spring 32 presses against the nail feed collet 34, which closes the nail feed collet 34 to grip the rivet and secure the rivet to the riveter. To increase the clamping effect, a rubber ring 35 can be placed on the outer wall of the nail feeding collet 34. The nail feeding chuck 34 is similar to the claw 243 in structure and consists of 3 separate arc blocks.

The gun head assembly 3 adjusts the pressure exerted on the rivet feeding chuck 34 by the chuck spring 32 by adjusting the thread depth between the chuck nut 33 and the rivet gun head 31, so that the clamping force of the rivet feeding chuck 34 for clamping the rivet is adjusted, the rivet is easy to jack the rivet feeding chuck 34 during the rivet mounting, and the rivet is not easy to fall off during the rapid movement of the rivet gun.

The following is the operational decomposition of the present invention:

(1) Starting up, pressing a starting-up button on the control outer box, and enabling the rivet gun to be in an initial state; both first piston 22 and second piston 24 are retracted to the bottom (respective right end limit positions), and third piston 42 is reset to its left end limit position; the guide mouth 221 located at the front abuts against the catch 243, the catch 243 is actually at its right end limit, and the catch 243 is in the released state, as shown in fig. 9.

(2) The nail feeding device then feeds the rivets through the conduit into the nailing base 1 as shown in figure 9.

(3) Then, the first chamber 211 is ventilated, the first piston 22 moves to the left, but the second piston 24 does not move temporarily, so that the first piston 22 pushes the guide nozzle 221 away from the jaws 243, and the jaws 243 are in a closed state (locked state) due to the urging action of the top barrel spring 245, as shown in fig. 10.

(4) The first piston 22 pushes the guide mouth 221 to push the rivet to the left, the rivet being inserted into the guide mouth 221 due to the guiding action of the guide mouth 221; in the process that the first piston 22 slides leftwards, the sub air inlet holes 233 are exposed, and are in a ventilation state (as shown in fig. 16), compressed air in the first cavity 211 enters the third cavity 231 to push the second piston 24 to move leftwards, and pushes rivets to move leftwards through the connecting shaft 241, the top cylinder spring 245, the top cylinder 244 and the claws 243 to knock off three arc-shaped blocks of the nail feeding chuck 34; note that the jaws 243 are closed at this time because the top barrel spring 245 provides the force; as shown in fig. 11.

(5) The rivet is then driven out and gripped by the feed collet 34, as shown in figure 11.

(6) The second piston 24 continues to slide leftwards to the limit position, and after the claw 243 impacts the right end of the guide nozzle 221, the claw 243 is switched from the closed state to the released state; the vacuum suction created by the laval nozzle 43 draws the rivet to the center of the jaws 243 as shown in fig. 12.

(7) When the switch 214 is turned on, hydraulic oil of the hydraulic pump enters the third cylinder 41 to push the third piston 42 to slide rightwards, and then the third piston 42 sequentially pulls the second cylinder 23, the second piston 24, the connecting shaft 241, the gun head claw sleeve 242 and the claw 243 to slide rightwards; during the rightward sliding process, the claw 243 does not abut against the right end of the guide nozzle 221 any more, the claw 243 is switched from the release state to the closing state, and the tail of the locking rivet continues to slide rightward, so that the rivet is broken, as shown in fig. 13-14.

(8) After the rivet is snapped, the third piston 42 slides to its right end limit; the compressed gas in the first cylinder 21 is then vented in reverse.

(9) After the ventilation is reversed from the previous action, the first piston 22 and the second piston 24 slide together to the right, and when the pistons slide to their respective extreme positions, the guide nozzles 221 strongly impact the jaws 243, so that the jaws 243 open, the vacuum suction sucks away the broken rivet tail, and then the third piston 41 returns to its left extreme position, as shown in fig. 15.

(10) And (4) repeating the action (1).

In conclusion, the invention has the following beneficial effects: 1) The nailing efficiency is high, the use is reliable, stable and labor-saving; 2) The binding structure and the locking structure are combined into a whole, so that the gun body of the automatic rivet gun is more compact and beautiful; 3) The process of binding and locking is smooth, and the reliability is ensured; 4) The broken tail nails cannot be scattered around, so that the collection and management are convenient; 5) The clamping force of the nail feeding chuck is adjustable, and the nail feeding chuck is suitable for rivets of different specifications.

The above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above embodiments, and all technical solutions that belong to the idea of the present invention belong to the scope of the present invention. It should be noted that modifications and adaptations to those skilled in the art without departing from the principles of the present invention should also be considered as within the scope of the present invention.

Claims (9)

1. The utility model provides a novel automatic riveter rifle body which characterized in that includes: the upper nail base is provided with a first upper nail through hole and a second upper nail through hole; one end of the upper nail base, which is positioned in the axial direction of the second upper nail through hole, is provided with an upper nail assembly which conveys the rivet positioned in the second upper nail through hole to the other end and movably clamps the rivet; a gun head assembly used for receiving and clamping the rivet conveyed by the upper nail assembly is arranged at the other end of the upper nail base, which is positioned in the axial direction of the second upper nail through hole; and the upper nail component is provided with a snapping component which snaps the rivet clamped by the upper nail component and sucks the snapped rivet.

2. A novel automatic riveter rifle body of claim 1, characterized in that, go up the nail subassembly and include: the device comprises a first cylinder body, a first piston, a second cylinder body, a second piston and a nail sucking pipe; one end of the first piston is positioned in the first cylinder body and is in sliding connection with the first cylinder body; one end of the second cylinder body is positioned in the first piston and is in sliding connection with the first piston; one end of the second piston is positioned in the second cylinder body and is connected with the second cylinder body in a sliding manner; one end of the nail suction pipe is positioned in the second piston and is connected with the second piston in a sliding way; one end of the first cylinder body is fixedly connected with the snapping assembly, and the other end of the first cylinder body is fixedly connected with one end of the upper nail base; one end of the first piston, which is close to the upper nail base, is detachably provided with a guide nozzle; one end of the second piston, which is close to the upper nail base, is detachably provided with a connecting shaft; a gun head claw sleeve is detachably arranged on the connecting shaft; a claw cavity is formed in the claw sleeve of the gun head; a clamping jaw is movably arranged in the clamping jaw cavity; a T-shaped through hole is formed in the connecting shaft; the T-shaped through hole is communicated with the jaw cavity; a top cylinder is movably arranged in the jaw cavity; a top barrel spring is movably arranged in the T-shaped through hole; one end of the top barrel spring abuts against the inner wall of the T-shaped through hole, and the other end of the top barrel spring abuts against the top barrel; the top cylinder abuts against the clamping jaw; the outer wall of the clamping jaw abuts against the clamping jaw cavity; the nail suction pipe is communicated with the T-shaped through hole; the nail suction pipe is detachably connected with the snapping assembly.

3. A novel automatic rivet gun body as recited in claim 2, characterized in that said first piston divides the interior space of said first cylinder into a first chamber and a second chamber; the second piston divides the inner space of the second cylinder into a third cavity and a fourth cavity; one end of the second cylinder body is provided with a sub air inlet for guiding the compressed air in the first cavity into the third cavity; when the volume of the first cavity is minimum, the compressed air in the first cavity cannot be led into the third cavity through the sub air inlet hole.

4. The novel automatic riveter gun body according to claim 2, characterized in that a first inclined plane is arranged at one end of the guide nozzle to facilitate the opening of the clamping jaws, and a guide arc surface is arranged at the other end of the guide nozzle to facilitate the entering of rivets into the centers of the clamping jaws; and a second inclined plane matched with the first inclined plane is arranged on the clamping jaw.

5. A novel automatic riveter rifle body of claim 2, characterized in that, the jack catch is toper, is provided with the conical third inclined plane of adaptation on the inner wall in the jack catch chamber.

6. A novel automatic riveter gun body as claimed in claim 2 wherein said snap-off assembly includes: a third cylinder body and a third piston which are provided with a fifth cavity and a sixth cavity; one end of the third piston is positioned in the fifth cavity, the other end of the third piston is positioned in the sixth cavity, and one end of the third piston is connected with the third cylinder in a sliding manner; the third cylinder body is fixedly connected with the first cylinder body; an extension rod of the third piston is detachably connected with the second cylinder body; a tail nail through hole for discharging a tail nail out of the gun body is formed in the extension rod of the third piston; an air pipe joint is arranged on the third cylinder body; the air pipe joint is sleeved with one end of an extending rod of the third piston; a Laval nozzle is arranged at the other end of the extension rod of the third piston and is positioned in the tail nail through hole; an extension rod of the third piston is provided with a vacuum suction hole; the tail nail through hole is communicated with the sixth cavity through the vacuum suction hole; the third cylinder body is provided with a special-shaped through hole for guiding compressed gas into the sixth cavity; the nail sucking pipe is detachably connected with the extending rod of the third piston.

7. A novel automatic riveter body as recited in claim 2, wherein a handle is provided at the bottom of said first cylinder; the handle is provided with a switch.

8. A novel automatic riveter gun body as claimed in claim 1, characterized by said gun head assembly comprising: the rivet feeding device comprises a rivet gun head, a chuck spring, a chuck nut, a rivet feeding chuck and a rubber ring; one end of the rivet gun head is fixedly connected with the upper rivet base; the chuck spring is sleeved and tightly propped against the other end of the rivet gun head; the nail feeding chuck is sleeved and tightly propped against the chuck spring; one end of the chuck nut is detachably connected with the rivet gun head, and the other end of the chuck nut is clamped with the rivet feeding chuck; the rubber ring is sleeved with the nail feeding chuck.

9. A novel automatic riveter, characterized in that it comprises a gun body according to any one of claims 1-8.

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