A hand-held cored rivet gun

Abstract

The application provides a hand-held core-pulling rivet gun, which comprises a gun head, a rivet clamping device, a pull rod pulling device and a casing, the gun head is fixedly connected with the casing, the rivet clamping device is arranged in the casing, the front end surface of the gun head is open, the rivet clamping device is fixedly connected with the pull rod pulling device, the pull rod pulling device comprises a pull sleeve, a pull rod, a driving coil, a pulling coil and a power supply, the pull rod passes through the pull sleeve and is connected with the driving coil, the pull sleeve is fixedly connected with the pull sleeve, the driving coil is fixedly connected with the pull sleeve, the pulling coil is fixed in the casing, the driving coil and the pull sleeve can pass through the pulling coil, and the power supply provides current for the driving coil and the pulling coil. The application has simple structure, high working efficiency and low manufacturing cost, and can complete the core-pulling work of large-diameter or high-strength pull rivets.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of riveting devices, and particularly relates to a hand-held core-pulling rivet gun. BACKGROUND

[0002] A core-pulling rivet is a rivet suitable for single-side riveting, has the advantages of large connecting strength, convenient operation and use, high reliability, etc., and is often used in the connection and maintenance of non-open parts in an aircraft structure. The core-pulling rivet needs to be used with a rivet gun during riveting. At present, the rivet guns on the market mainly include a manual rivet gun, a pneumatic rivet gun and an electric rivet gun. The manual rivet gun relies on human power to complete the riveting of the core-pulling rivet, and can only pull low-strength rivets, and has great limitations. Although the pneumatic and electric rivet guns can pull high-strength rivets, they need compressed air or use a motor, and have complex structures and large use noise.

[0003] Patent CN 1686634A discloses a hand-held electric core-pulling rivet gun. It converts the rotary motion of a motor into the linear motion of pulling the rivet through a screw nut pair, the nut has a claw-shaped structure, and can tightly hold or loosen the screw under the cooperation of the clasp, to realize the functions of pulling the sleeve, pulling the rivet core and resetting the sleeve after the rivet core is broken.

[0004] Disadvantages of the prior art:

[0005] (1) The core-pulling rivet gun driven by the motor converts the rotary motion of the motor into the linear motion of pulling the rivet, and has insufficient ability to pull large-diameter or high-strength rivets due to the limitation of the torque of the motor, and has great limitations in use.

[0006] (2) The motor produces great vibration noise during rotation, and has a poor working environment.

[0007] (3) The core-pulling rivet gun driven by the motor has a complex structure, high manufacturing cost and high price. SUMMARY

[0008] The application aims to overcome the deficiencies in the prior art, and provides a hand-held core-pulling rivet gun with strong power. The application scheme can solve the problems in the prior art.

[0009] Technical solution of the application:

[0010] A hand-held core-pulling rivet gun comprises a gun head, a rivet clamping device, a pull rod pulling device and a casing, the gun head is fixedly connected with the casing, the gun head is open at its front end, the rivet clamping device is installed in the gun head, the rivet clamping device is installed before the pull rod pulling device and is fixedly connected with the pull rod pulling device, the pull rod pulling device comprises a pull sleeve, a driving coil, a pulling coil and a power supply, the pull sleeve is installed after the pull sleeve and is fixedly connected with the pull sleeve, the driving coil is installed after the pull sleeve and is fixedly connected with the pull sleeve, the pulling coil is fixed in the casing, the outer diameter of the driving coil and the pull sleeve is smaller than the inner diameter of the pulling coil, and the power supply provides current for the driving coil and the pulling coil. After being powered on, the pulling coil attracts the driving coil to move away from the gun head, drives the pull sleeve and the pull sleeve to move, makes the part of the rivet close to the gun head fixed more tightly, and the part of the pull sleeve away from the gun head moves to the right quickly, so as to break the rivet.

[0011] Further, the rivet clamping device comprises a clamping jaw, a core wedge and a pull sleeve, the rivet clamping device is installed in the rivet, the clamping jaw is a structure that can be opened and closed, one end is sleeved on the periphery of the core wedge, and one end is a free end that can be opened and closed, the core wedge is a hollow cylinder with adjustable inner diameter, one end is inserted into the clamping jaw and is installed in the pull sleeve together with the clamping jaw, the pull sleeve is provided with a through hole inside and is matched with the inner shape of the gun head outside, the clamping jaw and the core wedge are installed in the through hole, and one end of the pull sleeve away from the clamping jaw is fixedly connected with the pull rod pulling device; when the pull sleeve is close to the gun head, the clamping jaw is opened, and at this time, the rivet can be installed, when the pull sleeve is away from the gun head, the clamping jaw is closed to clamp the rivet.

[0012] Further, the clamping jaw is a three-jaw structure.

[0013] Preferably, the pull sleeve and the pull sleeve are connected through threads.

[0014] Preferably, the pull rod is a stepped cylinder, and a cylinder with a diameter larger than the inner hole diameter of the pull sleeve is arranged at one end close to the gun head, so as to drive the pull sleeve to move away from the gun head after being powered on.

[0015] Further, the current in the pulling coil and the driving coil meets the requirement that the rivet gun can break the rivet with the maximum diameter designed.

[0016] Further, the power supply is selected according to the maximum diameter of the rivet that can be assembled by the rivet gun.

[0017] Further, the hand-held core-pulling rivet gun further comprises a reset spring, the reset spring is located between the pull sleeve and the casing, and when power is off, the pull sleeve is pulled back to the original position through the reset spring.

[0018] Further, the pull rod drawing device further comprises a supporting unit, which provides support for the movement of the pull sleeve and the driving coil.

[0019] Compared with the prior art, the present application has the following advantages:

[0020] (1) The hand-held core-pulling rivet gun generates a strong magnetic field through instantaneous discharge to drive the coil to move and complete the rivet pulling work, and has greater power than the motor-driven core-pulling rivet gun, and can complete the rivet pulling work of large-diameter or high-strength rivets;

[0021] (2) The present application does not need to install a motor and a screw conversion device, and has simple structure, high working efficiency and low manufacturing cost;

[0022] (3) The present application completes the rivet pulling work in an instant, and has no noise problem caused by continuous rotation of the motor, and improves the working environment. BRIEF DESCRIPTION OF DRAWINGS

[0023] The accompanying drawings included to provide a further understanding of the embodiments of the present application and constitute a part of the specification, illustrate the embodiments of the present application and together with the text description serve to explain the principles of the present application. Obviously, the drawings in the following description only show some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor on the basis of these drawings.

[0024] Figure 1 Fig. 1 shows a structure schematic diagram of a hand-held core-pulling rivet gun according to an embodiment of the present application;

[0025] Figure 2 Fig. 2 shows a pull sleeve schematic diagram according to an embodiment of the present application.

[0026] The above drawings contain the following reference signs:

[0027] 1. gun head screw, 2. buffer pad, 3. clamping jaw, 4. core wedge, 5. pull sleeve, 6. gun head, 7. return spring, 8. machine shell, 9. pull sleeve, 10. driving coil, 11. pulling coil, 12. pull rod, 13. boss, 14. handle, 15. gun tongue, 16. electric button, 17. power supply. DETAILED DESCRIPTION

[0028] It should be noted that the embodiments and features of the embodiments in the present application can be combined with each other in the case of no conflict. The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings of the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. The description of the at least one exemplary embodiment is actually only illustrative, but not as any limitation to the present application and its application or use. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work under the premise that there is no conflict, belong to the scope of protection of the present application.

[0029] It should be noted that the terms used herein are only intended to describe specific embodiments and are not intended to limit exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form, unless the context clearly indicates otherwise, and it should also be understood that when the terms "comprise" and / or "include" are used in the specification, it means that there is a feature, step, operation, device, component and / or combination thereof.

[0030] Unless specifically stated otherwise, the relative arrangement of the components and steps illustrated in these embodiments and the numerical expressions and values set forth herein are not limiting of the scope of the application. It should be understood that the various parts of the drawings are not necessarily drawn to scale, and that, for the purpose of convenience and clarity, not all components can be shown in a given figure. Techniques, methods, and devices known to those of ordinary skill in the art can not be discussed in detail, but rather can be assumed to be known by those of ordinary skill in the art. In the examples shown and discussed herein, any specific values should be interpreted as merely illustrative of the examples, and not as a limitation of the scope of the exemplary embodiments. Thus, other examples of the exemplary embodiments can have different values. It should be noted that like reference numerals and letters refer to like items in the following drawings, and thus, once an item is defined in one drawing, it need not be discussed further in subsequent drawings.

[0031] As Figure 1As shown, according to the embodiment of the present application, a handheld core-pulling rivet gun is provided, which comprises a gun head 6, a rivet clamping device, a pull rod pulling device and a casing 8. The gun head 6 is fixedly connected with the casing 8. The front end of the gun head 6 is open. The rivet clamping device is installed inside the gun head 6. The rivet clamping device is installed before the pull rod pulling device and is fixedly connected with the pull rod pulling device. The pull rod pulling device comprises a pull sleeve 9, a driving coil 10, a pulling coil 11 and a power supply 17. The pull sleeve 9 is installed after the pull sleeve 5 and is fixedly connected with the pull sleeve 5. The driving coil 10 is installed after the pull sleeve 9 and is fixedly connected with the pull sleeve 9. The pulling coil 11 is fixed inside the casing 8. The outer diameter of the driving coil 10 and the pull sleeve 9 is smaller than the inner diameter of the pulling coil 11. The power supply 17 provides current for the driving coil 10 and the pulling coil 11. After being powered, the pulling coil 11 attracts the driving coil 10 to move away from the gun head 6, drives the pull sleeve 9 and the pull sleeve 5 to move, makes the part of the rivet close to the gun head 6 more tightly, and makes the part of the pull sleeve 5 away from the gun head 6 move quickly to the right, so as to break the rivet. Through the setting of the driving coil and the pulling coil in the pull rod pulling device, a strong pulling force is generated at the moment of power-on, so as to break the rivet. The driving coil and the pulling coil are light in weight and can be purchased from a shelf product, which is small in cost. In the working process, it is intermittent work, which reduces the noise.

[0032] Further, in one embodiment, the rivet clamping device comprises a clamping jaw 3, a core wedge 4 and a pull sleeve 5. The rivet clamping device is installed inside the rivet. The clamping jaw 3 is a structure that can be opened and closed. One end is sleeved outside the core wedge 4. One end is a free end that can be opened and closed for clamping the rivet. In one embodiment, the clamping jaw 3 is a three-jaw structure, which can clamp rivets of different diameters. The core wedge 4 is a hollow cylinder with adjustable inner diameter. One end is inserted into the inside of the clamping jaw 3 and is installed together with the clamping jaw 3 inside the pull sleeve 5. The pull sleeve 5 is internally provided with a through hole. The clamping jaw 3 and the core wedge 4 are installed inside the through hole. The external shape is matched with the internal shape of the gun head 6. The end of the pull sleeve 5 away from the gun head 6 is fixedly connected with the pull rod pulling device. In a specific embodiment, as shown, Figure 2 the end of the pull sleeve 5 away from the gun head 6 is provided with a thin-walled structure. The outer wall of the thin-walled structure is provided with threads. The pull sleeve 5 is connected with the pull sleeve 5 in the pull rod pulling device through the threads. When the pull sleeve 5 is close to the end of the gun head 6, the clamping jaw 3 and the core wedge 4 are opened. At this time, the rivet can be installed. When the end of the pull sleeve 5 away from the gun head 6, the clamping jaw 3 and the core wedge 4 are closed to clamp the rivet. Preferably, a buffer pad 2 is arranged between the pull sleeve 5 and the gun head 6 to prevent excessive impact on the gun head 6.

[0033] Preferably, in one embodiment, a gun head screw 1 is arranged outside the gun head 6. The gun head screw 1 is hollowly arranged and connected with the hole of the gun head 6, which is convenient for the installation and positioning of the rivet.

[0034] Further in one embodiment, the pull rod pulling device further comprises a supporting unit, which provides support for the movement of the pull sleeve 9 and the driving coil 10. In this embodiment, the supporting unit is a pull rod 12. Preferably, in one embodiment, the pull rod 12 is a stepped cylinder, and the inside of the pull sleeve 9 is a stepped through hole matched with the pull rod 12. A cylinder with a diameter larger than the diameter of the small inner hole of the stepped through hole of the pull sleeve is arranged at the end close to the gun head, so as to avoid the pull rod 12 from being separated from the pull sleeve 9 and the pull rod 12 from being separated during the process of moving away from the gun head.

[0035] Further in one embodiment, the current in the pulling coil 11 and the driving coil 10 meets the requirement of breaking the rivet with the maximum diameter designed by the rivet gun. In a specific design, the size of the current can be determined according to the material of the commonly used rivet, the maximum diameter of the design and the safety factor set, so as to determine the specifications of the pulling coil 11 and the driving coil 10.

[0036] Further in one embodiment, a boss 13 is arranged at the position of the pulling coil 11 corresponding to the shell 8, which is used for buffering the pulling coil 11 and avoiding the impact of the recoil force of the pulling coil on the shell and the worker.

[0037] Further in one embodiment, the specifications of the power supply 17 are determined according to the specifications of the pulling coil 11 and the driving coil 10 and the current of the pulling coil 11 and the driving coil 10. In one embodiment, the electric button 16 is electrically connected with the power supply 17, so as to realize the control of the switch of the power supply 17. The gun trigger 15 and the handle 14 are arranged to make the control of the electric button 16 simple and convenient.

[0038] Further in one embodiment, the hand-held core-pulling rivet gun further comprises a reset spring 7, which is arranged between the pull sleeve 5 and the shell. When the power is off, the pull sleeve 5 is restored to the original position by the reset spring 7, so as to facilitate the next work.

[0039] Working principle:

[0040] In the initial (power-off) state, when the pulling coil 11 is reset by the reset spring 7, the pull sleeve 5 is pushed against the buffer pad 2 by the pull rod 12 (when the pull rod 12 is pulled to the leftmost position, the pull sleeve 5 and the pull rod 12 are screwed tightly, which is convenient for disassembly and assembly. The core wedge 4 pushes the jaw 3 against the gun head screw 1. Since the end faces of the gun head screw 1, the jaw 3 and the core wedge 4 are all tapered surfaces, and the jaw 3 is composed of three petals, the jaw 3 is expanded by being pushed, so as to facilitate the placement of the rivet. Different types of rivets can be used by replacing the gun head screw 1.

[0041] In use, the operator holds the handle 14 of the rivet gun, inserts the rivet core into the gun head screw 1, inserts the front end of the rivet into the hole of the plate to be riveted, pulls the trigger 15 to press the button 16, the coil 11 is electrified, the pull rod 12 moves right, the rivet core is clamped and pulled right under the action of the hole in the left end face of the pull sleeve 5, until the rivet core is broken, and the riveting is completed.

[0042] The reset spring 7 pushes the pull sleeve 5 to the buffer pad 2, the clamping jaw 3 is topped on the gun head screw, the clamping jaw 3 is opened, a new rivet can be put in, and the riveting work is repeated.

[0043] In summary, the hand-held core-pulling rivet gun provided by the application has at least the following advantages compared with the prior art:

[0044] (1) The hand-held core-pulling rivet gun of the application drives the coil to move by generating a strong magnetic field through instantaneous discharge, and has greater power than the motor-driven core-pulling rivet gun, and can complete the core-pulling work of large-diameter or high-strength pull rivets;

[0045] (2) The application does not need to install a motor and a screw conversion device, has a simple structure, high work efficiency and low manufacturing cost;

[0046] (3) The pull riveting work is completed instantaneously, and there is no noise problem caused by the continuous rotation of the motor, and the working environment is improved.

[0047] For the convenience of description, spatial relative terms such as "above", "upper", "top", "upper", etc. can be used here to describe the spatial position relationship of one device or feature with other devices or features as shown in the drawings. It should be understood that the spatial relative terms are intended to include different orientations in use or operation in addition to the orientation of the device described in the drawings. For example, if the device in the drawing is inverted, the device described as "above" or "above" other devices or structures will be positioned "below" or "below" other devices or structures. Thus, the example term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative description used here is interpreted accordingly.

[0048] In addition, it should be noted that the use of "first", "second", etc. to define parts is only for the convenience of distinguishing the corresponding parts, and the above words have no special meaning unless otherwise stated, and therefore cannot be understood as limiting the scope of protection of the application.

[0049] The above merely describes the preferred embodiments of the present application, and is not used to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A handheld blind rivet gun, characterized in that, The device includes a gun head (6), a rivet clamping device, a pull rod pulling device, and a housing (8). The gun head (6) is fixedly connected to the housing (8). The front end face of the gun head (6) is open, and the rivet clamping device is installed inside it. The rivet clamping device is installed before the pull rod pulling device and is fixedly connected to it. The pull rod pulling device includes a pull sleeve (9), a drive coil (10), a pull coil (11), and a power supply (17). The pull sleeve (9) is installed after the pull sleeve (5) and fixedly connected to it. The drive coil (10) is installed after the pull sleeve (9). And fixedly connected to it, the pull coil (11) is fixed inside the housing (8), the outer diameter of the drive coil (10) and the pull sleeve (9) is smaller than the inner diameter of the pull coil (11), the power supply (17) provides current to the drive coil (10) and the pull coil (11); the reset spring (7) is located between the pull sleeve (5) and the housing (8), and when the power is off, the pull sleeve (5) is restored to its original position by the reset spring (7); the pull rod pulling device also includes a support unit, which provides support for the movement of the pull sleeve (9) and the drive coil (10).

2. The handheld blind rivet gun according to claim 1, characterized in that, The rivet clamping device includes a jaw (3), a core wedge (4), and a pull sleeve (5). The rivet clamping device is equipped with a rivet. The jaw (3) is an openable structure, with one end fitted around the core wedge (4) and the other end being an openable free end. The core wedge (4) is a hollow cylinder with an adjustable inner diameter, with one end inserted into the jaw (3) and installed together with the jaw (3) inside the pull sleeve (5). The pull sleeve (5) has a through hole inside, and its external shape matches the internal shape of the gun head (6). The jaw (3) and the core wedge (4) are installed in the through hole. The end of the pull sleeve (5) away from the jaw is fixedly connected to the pull rod pulling device.

3. A handheld blind rivet gun according to claim 2, characterized in that, The gripper (3) is a three-claw structure.

4. A handheld blind rivet gun according to claim 2 or 3, characterized in that, The pull sleeve (9) and the pull sleeve (5) are connected by threads.

5. A handheld blind rivet gun according to claim 1, characterized in that, The pull rod (12) is a stepped cylinder with a cylinder at one end near the gun head (6) having a diameter larger than the inner diameter of the pull sleeve (9), which is used to drive the pull sleeve (9) to move away from the gun head (6) after being powered on.

6. A handheld blind rivet gun according to claim 1, characterized in that, The current in the pull coil (11) and the drive coil (10) is sufficient to allow the rivet gun to break rivets of its designed maximum diameter.

7. A handheld blind rivet gun according to any one of claims 1 to 6, characterized in that, The power supply (17) is selected based on the maximum diameter of the rivets that the rivet gun can assemble.

Images