CN221064295U - Automatic rivet feeding assembly of rivet gun and automatic rivet gun - Google Patents

Abstract

The utility model relates to a rivet feeding assembly of an automatic rivet gun and the automatic rivet gun, wherein the rivet feeding assembly comprises: a cylinder body, a linkage spring and a breaking pipe; a first piston used for pushing the guide nozzle to move and a second piston used for pushing the connecting shaft to move are slidably arranged in the cylinder body; one end of the first piston is provided with a groove for accommodating the linkage spring, and the other end of the first piston is detachably provided with a guide nozzle; the first piston is sleeved with the linkage spring and the second piston in sequence from outside to inside; the linkage spring is sleeved with the second piston; one end of the linkage spring abuts against the first piston, and the other end abuts against the second piston; the second piston is sleeved and is in sliding clamping connection with the breaking pipe; the utility model avoids the problems of motion setback and unsmooth locking action of the upper nail caused by the processing technology problem of the cylinder body, and can effectively control the action process of the primary and secondary pistons.

Description

Automatic rivet feeding assembly of rivet gun and automatic rivet gun

Technical Field

The utility model relates to the technical field of riveters, in particular to a rivet feeding assembly of an automatic riveter and the automatic riveter.

Background

The riveter 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, decorations and the like. The riveter is developed for solving the defects that nuts are easy to melt, internal threads are easy to slide and the like when metal sheets and thin pipes are welded, the internal threads are not required to be tapped during riveting, the nuts are not required to be welded, and the riveter is firm in riveting, high in efficiency and convenient and fast to use.

The publication No. CN115921750A discloses a novel automatic rivet gun body, wherein a first piston 22 and a second piston 24 respectively adopt a first cylinder body 21 with a relatively large inner diameter and a second cylinder body 23 with a relatively small inner diameter (see fig. 6). The friction forces received by the primary-secondary piston structure (the primary piston 22 is a primary piston and the secondary piston 24 is a secondary piston) are different in magnitude in the moving process, so that the secondary piston has obvious setbacks relative to the primary piston in the moving process, and the nail feeding locking action of the nail feeding assembly is not smooth; the friction force is different because the requirements of the internal surface processing technology of the cylinder bodies are relatively high, the first cylinder body 21 is relatively easy to process into a smooth state when the inner diameter is large, and the second cylinder body 23 is relatively difficult to process into a smooth state when the inner diameter is small; therefore, the rivet gun body with the structure cannot completely meet the use requirement in practical application.

Disclosure of utility model

Aiming at the defects of the prior art, the utility model aims to provide an automatic rivet gun and a rivet feeding assembly thereof, which can effectively control the action process of a primary piston and a secondary piston by enabling a first piston and a second piston to share the same cylinder body, thereby avoiding the problems of motion setback and unsmooth rivet feeding locking action caused by the processing technology problem of the cylinder body.

The technical aim of the utility model is realized by the following technical scheme:

a stapling assembly for an automatic riveter, comprising: a cylinder body, a linkage spring and a breaking pipe; a first piston used for pushing the guide nozzle to move and a second piston used for pushing the connecting shaft to move are slidably arranged in the cylinder body; one end of the first piston is provided with a groove for accommodating the linkage spring, and the other end of the first piston is detachably provided with a guide nozzle; the first piston is sleeved with the linkage spring and the second piston in sequence from outside to inside; the linkage spring is sleeved with the second piston; one end of the linkage spring abuts against the first piston, and the other end abuts against the second piston; the second piston is sleeved and is in sliding clamping connection with the breaking pipe.

Optionally, the guide nozzle is detachably connected with the first piston; the connecting shaft is detachably connected with the second piston; a nail sucking pipe is detachably arranged at one end of the connecting shaft, and a gun head claw sleeve is detachably arranged at the other end of the connecting shaft; a claw cavity is formed in the gun head claw sleeve; a claw is movably arranged in the claw cavity; a T-shaped through hole is formed in the connecting shaft; the T-shaped through hole is communicated with the clamping jaw cavity; a top cylinder is movably arranged in the claw cavity; a top cylinder spring is movably arranged in the T-shaped through hole; one end of the top cylinder spring is abutted against the inner wall of the T-shaped through hole, and the other end of the top cylinder spring is abutted against the top cylinder; the top cylinder abuts against the clamping jaw; the outer wall of the claw abuts against the claw cavity; one end of the nail sucking pipe is positioned in the breaking pipe, and the other end of the nail sucking pipe is communicated with the T-shaped through hole.

Optionally, a first inclined plane which is convenient for the jaws to open is arranged at one end of the guide nozzle, and a guide cambered surface which is convenient for the rivet to enter the center of the jaws 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 claw is conical, and a third inclined plane adapting to the conical shape is arranged on the inner wall of the claw cavity.

An automatic rivet gun body comprises the rivet feeding assembly.

Optionally, the method comprises the following steps: an upper nail base provided with a first upper nail through hole and a second upper nail through hole; the upper nail base is provided with the upper nail assembly which is positioned at one axial end of the second upper nail through hole, conveys the rivet positioned in the second upper nail through hole to the other end and movably clamps the rivet; the gun head assembly used for receiving and clamping rivets conveyed by the upper nail assembly is arranged at the other end of the upper nail base in the axial direction of the second upper nail through hole; and the upper nail assembly is provided with a breaking assembly which breaks the rivet clamped by the upper nail assembly and sucks the broken rivet.

In summary, the utility model has the following beneficial effects: not only solves the problem of motion setback of the neutron parent piston in the CN115921750A patent caused by the processing technology, but also inherits the advantages.

Drawings

FIG. 1 is a schematic view of the structure of the upper spike assembly of the present utility model;

FIG. 2 is a schematic illustration of a staple assembly in cross-section in accordance with the present utility model;

FIG. 3 is a schematic view of an automatic riveter body in cross-section according to the present utility model;

FIG. 4 is an enlarged schematic view of area A of FIG. 3;

FIG. 5 is an enlarged schematic view of region B of FIG. 3;

FIG. 6 is an enlarged schematic view of region C of FIG. 3;

FIG. 7 is a schematic view of the compressed air flow in region D of FIG. 6;

FIG. 8 is an exploded view I of the action of the upper spike assembly of the present utility model;

FIG. 9 is an exploded view II of the action of the upper spike assembly of the present utility model;

FIG. 10 is an exploded view III of the action of the upper spike assembly of the present utility model;

FIG. 11 is an exploded view IV of the action of the stapling assembly of the present utility model;

FIG. 12 is an exploded view V of the action of the upper spike assembly of the present utility model;

FIG. 13 is an exploded view VI of the action of the stapling assembly of the present utility model;

Fig. 14 is an exploded view VII of the action of the upper spike assembly of the present utility model.

In the figure: 1. a nailing base; 11. a first upper pin through hole; 12. a second upper pin through hole; 2. a stapling assembly; 21. a cylinder; 22. a linkage spring; 23. breaking the tube; 24. a first piston; 241. a groove; 242. a guide nozzle; 2421. a first inclined surface; 2422. a guide cambered surface; 25. a second piston; 26. a connecting shaft; 261. t-shaped through holes; 27. a nail sucking tube; 28. gun head claw sleeve; 281. a jaw cavity; 2811. a third inclined surface; 29. a claw; 291. a second inclined surface; 210. a top cylinder; 211. a top cylinder spring; 3. a gun head assembly; 4. and breaking the assembly.

Detailed Description

In order that the objects, features and advantages of the utility model will be readily understood, a more particular description of the utility model will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. Several embodiments of the utility model are presented in the figures. This utility model may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein.

In the present utility model, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art according to the specific circumstances. The terms "first," "second," and the like, 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 defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

In the present utility model, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature. The terms "vertical," "horizontal," "left," "right," "up," "down," and the like are used for descriptive purposes only and are not to indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the utility model.

The present utility model will be described in detail below with reference to the accompanying drawings and examples.

The present utility model provides a stapling assembly 2 for an automatic riveter, as shown in fig. 1-2, comprising: a cylinder 21, a linkage spring 22 and a breaking pipe 23; a first piston 24 for pushing the guide nozzle 242 to move and a second piston 25 for pushing the connecting shaft 26 to move are slidably arranged in the cylinder 21; a groove 241 for accommodating the linkage spring 22 is formed at one end of the first piston 24, and a guide nozzle 242 is detachably arranged at the other end; the first piston 24 is sleeved with the linkage spring 22 and the second piston 25 in sequence from outside to inside; the linkage spring 22 is sleeved with the second piston 25; one end of the linkage spring 22 abuts against the first piston 24, and the other end abuts against the second piston 25; the second piston 25 is sleeved and slidably clamped with the breaking pipe 23.

In this embodiment, the cylinder 21, the first piston 24 and the second piston 25 form a primary-secondary cylinder, and the second piston 25 is sleeved with the linkage spring 22, when compressed gas enters the cylinder 1 from the right end thereof, the compressed gas pushes the second piston 25 to slide leftwards first, and then the second piston 25 pushes the linkage spring 22 to slide leftwards, so that the linkage spring 22 pushes the first piston 24 to slide leftwards until the first piston 24 reaches the limit of the left end; when the first piston 24 reaches the left end limit, the compressed gas further pushes the second piston 25 to slide leftward until the first piston 24 is abutted, during which the linkage spring 22 is compressed in the groove 241. Because the first piston 24 and the second piston 25 share the cylinder 21, based on the existing processing conditions, the friction force between the first piston 24 and the cylinder 21 and the friction force between the second piston 25 and the cylinder 21 can be considered to be almost consistent, and under the action of the linkage spring 5, the sliding speed of the first piston 24 and the sliding speed of the second piston 25 are almost the same, so that no user perceived setback exists in the sliding process of the second piston 25, the screw feeding locking action is smooth and consistent, and the problem of motion setback of the neutron master piston in the CN115921750A patent due to the processing technology is overcome. The right end of the breaking tube 23 is in threaded connection with a piston of the breaking assembly 4 (the breaking assembly 4 is the same as the breaking assembly in the CN115921750a patent), the left end is slidably clamped with the second piston 25, and the breaking tube 23 slides in opposite directions for a preset distance and then drives the second piston 25 to slide rightward.

Further, the guide nozzle 242 is detachably connected to the first piston 24; the connecting shaft 26 is detachably connected with the second piston 25; a nail sucking pipe 27 is detachably arranged at one end of the connecting shaft 26, and a gun head claw sleeve 28 is detachably arranged at the other end; a jaw cavity 281 is formed on the gun head jaw sleeve 28; a claw 29 is movably arranged in the claw cavity 281; a T-shaped through hole 261 is formed in the connecting shaft 26; the T-shaped through hole 261 is communicated with the claw cavity 281; a top cylinder 210 is movably arranged in the claw cavity 281; a top cylinder spring 211 is movably arranged in the T-shaped through hole 261; one end of the top cylinder spring 211 abuts against the inner wall of the T-shaped through hole 261, and the other end abuts against the top cylinder 210; the top cylinder 210 abuts against the claw 29; the outer wall of the claw 29 abuts against the claw cavity 281; one end of the nail sucking pipe 27 is positioned in the breaking pipe 23, and the other end is communicated with the T-shaped through hole 261.

Further, a first inclined surface 2421 for facilitating the opening of the jaws 29 is provided at one end of the guide nozzle 242, and a guide arc surface 2422 for facilitating the rivet to enter the center of the jaws 29 is provided at the other end; a second inclined surface 291 that is adapted to the first inclined surface 2421 is provided on the claw 29.

Further, the jaw 29 is tapered, and a third inclined surface 2811 adapted to the taper is provided on an inner wall of the jaw cavity 281.

As shown in fig. 2, the rivet suction tube 27 and the snap tube 23 are both tubular in configuration, allowing the pulled rivet to pass through the interior thereof until the upper rivet assembly 2 is ejected and the automatic rivet gun body is ejected through the snap assembly 4. The structures of the guide nozzle 242, the connecting shaft 26, the gun head claw sleeve 28, the claw 29, the top cylinder 210 and the top cylinder spring 211 and the connection manner are the same as those disclosed in the CN115921750a patent, and are not related to the problem of motion setback of the master cylinder and the slave cylinder, and detailed description thereof will be omitted herein, and reference is made to the CN115921750a patent.

An automatic riveter body, comprising: an upper nail base 1 provided with a first upper nail through hole 11 and a second upper nail through hole 12; the upper nail assembly 2 which is used for conveying the rivet positioned in the second upper nail through hole 12 to the other end and is movably clamped is arranged at one axial end of the upper nail base 1 positioned in the second upper nail through hole 12; the 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 rivet loading assembly 2 is provided with a breaking assembly 4 for breaking the rivet clamped by the rivet loading assembly 2 and sucking the broken rivet.

As shown in fig. 3-7, the automatic rivet gun body of the present embodiment is different from the automatic rivet gun body disclosed in CN115921750a only in that the structure of the upper nail assembly 2 is different, and the remaining upper nail base 1, gun head assembly 3 and breaking assembly 4 are consistent with the corresponding structures disclosed in CN115921750 a; the structure of the upper nail base 1, the gun head assembly 3 and the breaking assembly 4 is irrelevant to the problem of motion setback of the primary and secondary cylinders, and the detailed description thereof will not be repeated herein, and reference can be made to the patent CN115921750 a.

The following are the action resolution of the stapling assembly or/and automatic riveter of the present utility model:

(1) Starting up, pressing a start button on the control outer box, and enabling the rivet gun to be in an initial state; both the first piston 24 and the second piston 25 retract to the bottom (the respective right extreme positions), and the stretch-breaking tube 23, which is connected to the piston of the stretch-breaking assembly 4 (i.e., the third piston 42 of CN115921750a, see fig. 7 thereof), is reset to its left extreme position; the guide mouth 242 at the left end abuts against the claw 29, the claw 29 is actually at its right end limit, and the claw 29 is in a released state as shown in fig. 8.

(2) The external rivet feeding device then feeds the rivets through the ducts into the upper base 1, as shown in fig. 8.

(3) Then, the compressed gas in the cylinder 21 switches the direction of the gas inlet and outlet, pushing the first piston 24 and the second piston 25 to move leftward, the first piston 24 pushing the guide nozzle 242 away from the claw 29, and the claw 29 is switched from the released state to the closed state (locked state) due to the abutting action of the top cylinder spring 211, as shown in fig. 9.

(4) The first piston 24 pushes the guide nozzle 242 to push the rivet leftwards, and the rivet is inserted into the guide nozzle 242 due to the guide action of the guide nozzle 242; in the process of sliding the second piston 25 leftwards, the second piston 25 pushes the rivet to move leftwards through the connecting shaft 26, the top cylinder spring 211, the top cylinder 210 and the claw 29 in sequence, and the three arc-shaped blocks of the nail feeding chuck of the gun head assembly 3 are crashed; note that the pawl 29 is closed at this point because the top cylinder spring 211 provides the force as shown in fig. 10.

(5) The rivet is then pushed out and clamped by the feed dog of the gun head assembly 3, as shown in fig. 10.

(6) The second piston 25 continues to slide leftwards to the limit position, and after the claw 29 impacts the right end of the guide nozzle 242, the claw 29 is switched from the closed state to the released state; the vacuum suction created by the laval nozzle of the snap assembly 4 pulls the rivet to the center of the jaws 29 as shown in fig. 11.

(7) The switch on the handle is buckled, the piston of the breaking assembly 4 acts rightwards, and then the breaking tube 23, the second piston 25, the connecting shaft 26, the gun head claw sleeve 28 and the claw 29 are sequentially pulled to slide rightwards; during the rightward sliding, the pawl 29 no longer abuts the right end of the guide mouth 242, the pawl 29 switches from the released state to the closed state, and the tail of the locking rivet continues to slide rightward, thereby breaking the rivet, as shown in fig. 12-13.

(8) After the rivet is pulled off, the piston of the pull-off assembly 4 slides to the right end limit position; the compressed gas in the cylinder 21 is then vented in reverse.

(9) After reverse ventilation from the previous action, the first piston 24 slides to the right, when sliding to the right limit, the guide nozzle 242 impacts strongly against the jaw 29, causing the jaw 29 to open, the vacuum suction sucks the tail of the rivet broken away, and then the piston of the first breaking assembly 4 is reset to its left limit, as shown in fig. 14.

(10) Repeating the operation (1).

In conclusion, the utility model has the beneficial effects of mainly overcoming the problem of motion setbacks of the neutron master piston in the CN115921750A patent due to the processing technology and inheriting the advantages thereof.

The above description is only a preferred embodiment of the present utility model, and the protection scope of the present utility model is not limited to the above examples, and all technical solutions belonging to the concept of the present utility model belong to the protection scope of the present utility model. It should be noted that modifications and adaptations to the present utility model may occur to one skilled in the art without departing from the principles of the present utility model and are intended to be within the scope of the present utility model.

Claims (6)

1. A stapling assembly for an automatic riveter, comprising: a cylinder body, a linkage spring and a breaking pipe; a first piston used for pushing the guide nozzle to move and a second piston used for pushing the connecting shaft to move are slidably arranged in the cylinder body; one end of the first piston is provided with a groove for accommodating the linkage spring, and the other end of the first piston is detachably provided with a guide nozzle; the first piston is sleeved with the linkage spring and the second piston in sequence from outside to inside; the linkage spring is sleeved with the second piston; one end of the linkage spring abuts against the first piston, and the other end abuts against the second piston; the second piston is sleeved and is in sliding clamping connection with the breaking pipe.

2. The automatic riveter's upper nail assembly of claim 1, wherein the guide nozzle is detachably connected to the first piston; the connecting shaft is detachably connected with the second piston; a nail sucking pipe is detachably arranged at one end of the connecting shaft, and a gun head claw sleeve is detachably arranged at the other end of the connecting shaft; a claw cavity is formed in the gun head claw sleeve; a claw is movably arranged in the claw cavity; a T-shaped through hole is formed in the connecting shaft; the T-shaped through hole is communicated with the clamping jaw cavity; a top cylinder is movably arranged in the claw cavity; a top cylinder spring is movably arranged in the T-shaped through hole; one end of the top cylinder spring is abutted against the inner wall of the T-shaped through hole, and the other end of the top cylinder spring is abutted against the top cylinder; the top cylinder abuts against the clamping jaw; the outer wall of the claw abuts against the claw cavity; one end of the nail sucking pipe is positioned in the breaking pipe, and the other end of the nail sucking pipe is communicated with the T-shaped through hole.

3. The automatic riveter's upper nail assembly according to claim 2, wherein a first inclined surface for facilitating the opening of the jaws is provided at one end of the guide nozzle, and a guide cambered surface for facilitating the entry of the rivet into the center of the jaws is provided at the other end; and a second inclined plane matched with the first inclined plane is arranged on the clamping jaw.

4. The automatic riveter's upper nail assembly according to claim 2, wherein the jaws are tapered, and a third bevel is provided on the inner wall of the jaw cavity that fits the taper.

5. An automatic riveter comprising a stapling assembly as recited in any one of claims 1-4.

6. The automatic riveter of claim 5, including: an upper nail base provided with a first upper nail through hole and a second upper nail through hole; the upper nail base is provided with the upper nail assembly which is positioned at one axial end of the second upper nail through hole, conveys the rivet positioned in the second upper nail through hole to the other end and movably clamps the rivet; the gun head assembly used for receiving and clamping rivets conveyed by the upper nail assembly is arranged at the other end of the upper nail base in the axial direction of the second upper nail through hole; and the upper nail assembly is provided with a breaking assembly which breaks the rivet clamped by the upper nail assembly and sucks the broken rivet.