Riveting positioning head capable of positioning rivet in gun nozzle and riveter

Abstract

The utility model relates to the technical field of rivet pulling devices, in particular to a rivet pulling positioning head capable of positioning a rivet in a gun nozzle and a rivet pulling gun, which comprise an outer sleeve, the gun nozzle and a rivet positioning device, the rivet positioning device comprises a mounting base arranged on the outer sleeve, a sliding block connected to the mounting base in a sliding mode, a positioning block arranged on the sliding block and a positioning driving mechanism arranged on the mounting base or / and the outer sleeve and used for driving the sliding block to move, a via hole is formed in the outer side wall of the gun nozzle, and the positioning block moves into or out of an inner cavity of the gun nozzle through the via hole. The riveting device is reasonable in structural design, the rivets in the gun nozzle can be effectively and accurately positioned, the position precision and stability of the rivets are improved, the positions of the rivets in the gun nozzle are consistent, and therefore the riveting quality can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rivet devices, in particular to a rivet positioning head and a rivet gun which can locate the position of a rivet in a gun mouth. Background Art

[0002] When it is necessary to perform riveting work on a workpiece, the rivet needs to be supplied to the gun nozzle of the rivet gun so that the rivet rod is inserted into the gun nozzle and the rivet head contacts the outer end surface of the gun nozzle. In the existing patents, the Chinese patent document with application number 202021476032.6 filed by the applicant on July 23, 2020 discloses a rivet gun nailing mechanism and a rivet gun having the same. The rivet gun includes a rivet gun nailing mechanism, a gun body, a gun nozzle disposed on the gun body, and a nailing driving mechanism disposed on the gun body, wherein the nailing driving mechanism is used to drive the upper clamping nail head and the lower clamping nail head to approach or move away from the gun nozzle and to drive the upper clamping nail head and the lower clamping nail head to open or close to each other. The rivet gun of the patent document uses the rivet gun loading mechanism to load the rivet into the gun mouth, so that the rivet rod is inserted into the gun mouth; in order for the rivet rod to be smoothly inserted into the gun mouth, the inner hole diameter of the gun mouth is larger than the rivet rod diameter; after the rivet rod is inserted into the gun mouth, due to the gap between the rivet rod and the inner hole of the gun mouth, the position of each rivet sucked by negative pressure in the gun mouth is inconsistent, and there will be deviations, resulting in poor riveting quality, or even failure to complete the riveting work. Therefore, the defects are very obvious, and a solution is urgently needed. Utility Model Content

[0003] In order to solve the above technical problems, the purpose of the utility model is to provide a rivet positioning head and a rivet gun that can locate the position of the rivet in the gun nozzle.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A rivet positioning head capable of positioning a rivet in a gun nozzle comprises an outer sleeve, a gun nozzle and a rivet positioning device, wherein the gun nozzle is mounted at one end of the outer sleeve, and the rivet positioning device comprises a mounting seat mounted on the outer sleeve, a slider slidably connected to the mounting seat, a positioning block arranged on the slider, and a positioning drive mechanism mounted on the mounting seat and / or the outer sleeve and used for driving the slider to move, wherein a through hole is provided on the outer side wall of the gun nozzle, and the positioning block moves into or out of the inner cavity of the gun nozzle via the through hole.

[0006] Furthermore, the positioning drive mechanism includes a positioning drive installed on the mounting seat and / or the outer sleeve, and the output end of the positioning drive is used to drive the slider to move.

[0007] Furthermore, the positioning driver is a cylinder, a linear motor or an electromagnet.

[0008] Furthermore, the positioning drive mechanism also includes a tension spring, one end of which is connected to the slider, and the other end of which is connected to the mounting seat.

[0009] Furthermore, the sliding block is provided with an abutment block, and the output end of the positioning driver is used to abut against the abutment block.

[0010] Furthermore, the slider is provided with a hanging rod, the mounting seat is provided with a hanging hole, one end of the tension spring is hung on the hanging rod, and the other end of the tension spring is hung on the hanging hole.

[0011] Furthermore, there are multiple hanging holes, and the multiple hanging holes are arranged and distributed along the moving direction of the slider.

[0012] Furthermore, there are two tension springs, which are respectively located on two sides of the slider.

[0013] Furthermore, a positioning groove is provided at one end of the positioning block away from the sliding block.

[0014] The utility model also provides a rivet gun, comprising the rivet positioning head capable of positioning the rivet in the gun mouth.

[0015] The beneficial effects of the utility model are as follows: in actual application, after the nail rod of the rivet is inserted into the gun nozzle, the nail head of the rivet contacts the outer end surface of the gun nozzle, and the rivet is sucked onto the gun nozzle by negative pressure, and then the positioning drive mechanism drives the slider to move close to the outer sleeve, so that the positioning block moves into the gun nozzle through the through hole, until the positioning block pushes the nail rod of the rivet to contact with a side wall of the inner cavity of the gun nozzle, so as to realize the positioning of the rivet in the gun nozzle. Since the negative pressure sucks the rivet tightly in the positioned position, the positioning drive mechanism drives the slider to move away from the outer sleeve until the positioning block moves out of the inner cavity of the gun nozzle, so that the rivet gun can perform riveting work on the positioned rivet, and the positioning block can also position the next rivet. The structural design of the utility model is reasonable, and can effectively and accurately position the rivet in the gun nozzle, improve the position accuracy and stability of the rivet, and each rivet is in the same position in the gun nozzle, thereby improving the quality of riveting. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of a rivet positioning head capable of locating the position of a rivet in a gun nozzle according to the utility model.

[0017] Figure 2 It is a cross-sectional view of a pull rivet positioning head capable of positioning a rivet in a gun nozzle according to the utility model.

[0018] Figure 3 It is a three-dimensional structural schematic diagram of the rivet gun of the utility model.

[0019] Description of reference numerals:

[0020] 1. Outer sleeve; 2. Gun nozzle; 3. Rivet positioning device; 4. Mounting seat; 5. Slider; 6. Positioning block; 7. Positioning drive mechanism; 8. Through hole; 9. Positioning driver; 10. Tension spring; 11. Resistance block; 12. Hanging rod; 13. Hanging hole; 14. Positioning slot; 15. Slide slot. DETAILED DESCRIPTION

[0021] In order to facilitate the understanding of those skilled in the art, the present invention is further described below in conjunction with embodiments and drawings. The contents mentioned in the implementation modes are not intended to limit the present invention.

[0022] like Figures 1 to 3 As shown, the utility model provides a rivet positioning head capable of positioning a rivet in a gun nozzle, which comprises an outer sleeve 1, a gun nozzle 2 and a rivet positioning device 3. The gun nozzle 2 is mounted at one end of the outer sleeve 1. The rivet positioning device 3 comprises a mounting seat 4 mounted on the outer sleeve 1, a slider 5 slidably connected to the mounting seat 4, a positioning block 6 arranged on the slider 5, and a positioning drive mechanism 7 mounted on the mounting seat 4 and / or the outer sleeve 1 and used for driving the slider 5 to move. A through hole 8 is provided on the outer wall of the gun nozzle 2, and the positioning block 6 moves into or out of the inner cavity of the gun nozzle 2 via the through hole 8.

[0023] The rivet positioning head capable of positioning the rivet in the gun nozzle is applied to the rivet gun to become a part of the rivet gun. The rivet gun is connected to the negative pressure mechanism so that the rivet positioning head can generate negative pressure. In actual application, after the rivet rod is inserted into the gun nozzle 2, the rivet head contacts the outer end surface of the gun nozzle 2, and the rivet is sucked onto the gun nozzle 2 by negative pressure. Then the positioning drive mechanism 7 drives the slider 5 to move close to the outer sleeve 1, so that the positioning block 6 moves into the gun nozzle 2 through the through hole 8, until the positioning block 6 pushes the rivet rod to contact with a side wall of the inner cavity of the gun nozzle 2, so as to realize the positioning of the rivet in the gun nozzle 2. Since the negative pressure sucks the rivet tightly in the positioned position, the positioning drive mechanism 7 drives the slider 5 to move away from the outer sleeve 1 until the positioning block 6 moves out of the inner cavity of the gun nozzle 2, so that the rivet gun can perform riveting work on the positioned rivet, and the positioning block 6 can also position the next rivet. The utility model has a reasonable structural design and can effectively and accurately position the rivets in the gun nozzle 2, thereby improving the position accuracy and stability of the rivets. The position of each rivet in the gun nozzle 2 is consistent, thereby improving the quality of the pull riveting.

[0024] In this embodiment, the positioning drive mechanism 7 includes a positioning drive 9 installed on the mounting seat 4 and / or the outer sleeve 1, and the output end of the positioning drive 9 is used to drive the slider 5 to move; specifically, the positioning drive 9 is a cylinder, a linear motor or an electromagnet.

[0025] In this embodiment, the positioning drive mechanism 7 further includes a tension spring 10, one end of which is connected to the slider 5, and the other end of which is connected to the mounting seat 4; the force of the tension spring 10 is opposite to the driving force of the positioning driver 9. When in use, the tension spring 10 not only assists the slider 5 in resetting and moving, but also acts as a buffer to prevent the positioning block 6 from crushing the rivet rod.

[0026] In this embodiment, the slider 5 is provided with a resistance block 11, and the output end of the positioning driver 9 is used to resist the resistance block 11. This structural design makes the output end of the positioning driver 9 and the resistance block 11 detachably driven, omitting the connection structure between the output end of the positioning driver 9 and the resistance block 11, simplifying the structure, and facilitating disassembly and maintenance.

[0027] In another embodiment, when the positioning driver 9 drives the slider 5 to move back and forth, the output end of the positioning driver 9 is fixedly connected or hinged to the slider 5 .

[0028] In this embodiment, the slider 5 is provided with a hanging rod 12, the mounting seat 4 is provided with a hanging hole 13, one end of the tension spring 10 is hung on the hanging rod 12, and the other end of the tension spring 10 is hung on the hanging hole 13; the force of the tension spring 10 is parallel to the moving direction of the slider 5. This structural design facilitates the disassembly and assembly of the tension spring 10 and improves the stability of the tension spring 10 in use.

[0029] In this embodiment, there are multiple hanging holes 13, and the multiple hanging holes 13 are arranged and distributed along the moving direction of the slider 5. By hanging the tension spring 10 on the hanging holes 13 at different positions, the resilience of the tension spring 10 can be changed, which facilitates the adjustment of the resilience of the tension spring 10.

[0030] In this embodiment, there are two tension springs 10, and the two tension springs 10 are respectively located on both sides of the slider 5. This structural design makes the slider 5 evenly stressed, and improves the movement stability of the slider 5.

[0031] In this embodiment, a positioning groove 14 is provided at one end of the positioning block 6 away from the slider 5. Specifically, the positioning groove 14 is an arc groove or a V-shaped groove. The design of the positioning groove 14 further improves the stability and position accuracy of the rivet positioning and is not easy to crush the rivet rod.

[0032] Specifically, the mounting seat 4 is recessed with a slide groove 15, and the horizontal plate of the slider 5 is slidably set in the slide groove 15, thereby improving the movement stability of the slider 5; the slider 5 is L-shaped, and the structure of the slider 5, the mounting seat 4 and the outer sleeve 1 is compact; the positioning block 6 is set at the free end of the vertical plate of the slider 5, and the abutment block 11 is bent from the middle of the vertical plate of the slider 5 and is set obliquely; the through hole 8 is located in the middle of the gun nozzle 2 and below the outer sleeve 1, and the mounting seat 4 is sleeved on the outside of the outer sleeve 1.

[0033] The utility model also provides a rivet gun, comprising the above-mentioned rivet positioning head capable of positioning the rivet in the gun mouth. The rivet gun has all the beneficial effects of the rivet positioning head capable of positioning the rivet in the gun mouth, which will not be repeated here.

[0034] All technical features in this embodiment can be freely combined according to actual needs.

[0035] The above embodiments are preferred implementation schemes of the present invention. In addition, the present invention can also be implemented in other ways. Any obvious replacement without departing from the concept of the present technical solution is within the protection scope of the present invention.

Claims

1. A pull rivet positioning head capable of locating the position of a rivet in a gun nozzle, characterized in that: The invention comprises an outer sleeve (1), a gun nozzle (2) and a rivet positioning device (3), wherein the gun nozzle (2) is mounted on one end of the outer sleeve (1), and the rivet positioning device (3) comprises a mounting seat (4) mounted on the outer sleeve (1), a slider (5) slidably connected to the mounting seat (4), a positioning block (6) arranged on the slider (5), and a positioning driving mechanism (7) mounted on the mounting seat (4) or / and the outer sleeve (1) and used for driving the slider (5) to move. A through hole (8) is provided on the outer wall of the gun nozzle (2), and the positioning block (6) moves into or out of the inner cavity of the gun nozzle (2) through the through hole (8).

2. A pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 1, characterized in that: The positioning drive mechanism (7) comprises a positioning drive (9) mounted on the mounting seat (4) and / or the outer sleeve (1), and the output end of the positioning drive (9) is used to drive the slider (5) to move.

3. A pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 2, characterized in that: The positioning driver (9) is a cylinder, a linear motor or an electromagnet.

4. A pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 2 or 3, characterized in that: The positioning drive mechanism (7) further comprises a tension spring (10), one end of the tension spring (10) is connected to the slider (5), and the other end of the tension spring (10) is connected to the mounting seat (4).

5. A pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 4, characterized in that: The sliding block (5) is provided with a resistance block (11), and the output end of the positioning driver (9) is used for resisting against the resistance block (11).

6. A pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 4, characterized in that: The slider (5) is provided with a hanging rod (12), the mounting seat (4) is provided with a hanging hole (13), one end of the tension spring (10) is hung on the hanging rod (12), and the other end of the tension spring (10) is hung on the hanging hole (13).

7. A pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 6, characterized in that: There are a plurality of hanging holes (13), and the plurality of hanging holes (13) are arranged and distributed along the moving direction of the slider (5).

8. The pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 4, characterized in that: There are two tension springs (10), and the two tension springs (10) are respectively located on two sides of the slider (5).

9. The pull rivet positioning head capable of positioning a rivet in a gun nozzle according to claim 1, characterized in that: A positioning groove (14) is provided at one end of the positioning block (6) away from the sliding block (5).

10. A rivet gun, characterized in that: The utility model comprises a pull rivet positioning head capable of positioning a rivet in a gun nozzle as described in any one of claims 1 to 9.

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