CN211866396U

CN211866396U - Nut turns over riveter dress

Info

Publication number: CN211866396U
Application number: CN202020261036.6U
Authority: CN
Inventors: 姜习云
Original assignee: Chongqing Delongsheng Industrial Co ltd
Current assignee: Chongqing Delongsheng Industrial Co ltd
Priority date: 2020-03-05
Filing date: 2020-03-05
Publication date: 2020-11-06
Anticipated expiration: 2030-03-05

Abstract

The utility model discloses a nut rivet turning tool, which comprises a die sleeve, wherein the front end of the die sleeve is provided with an opening part, the opening part is communicated with an inner cavity arranged in the die sleeve, a prepressing die core capable of extending out of the opening part is arranged in the inner cavity, and the tail part of the prepressing die core is limited in the inner cavity; the inner cavity is internally provided with a spring, the front end of the spring abuts against the pre-pressing mold core, and the rear end of the spring abuts against the bottom of the inner cavity. The utility model discloses can realize taking the nut (like wheel nut) of metal cap disposable riveting to accomplish, and the nut can stably impress the metal cap, does not send the pressure partially, and the wearability is good simultaneously, long service life, easy maintenance.

Description

Nut turns over riveter dress

Technical Field

The utility model relates to the field of machine-building, especially, relate to a nut turns over frock of riveting.

Background

In the prior art, a plurality of nuts (particularly wheel nuts) are sleeved with a metal cap, so that the appearance is attractive, the protection performance of the nuts is improved, the nuts are prevented from rusting and corroding, and the service life of the nuts is prolonged. In the prior art, a metal cap is partially riveted on a nut in a riveting mode, and the riveting and forming of the nut are usually completed by two procedures, namely, firstly, the nut is pre-pressed into the metal cap (in order to improve the impact performance, the metal cap and the wheel nut are in interference fit, so that the wheel nut needs larger pressure to be pressed into the metal cap); and secondly, riveting and forming the pre-pressed nut and the metal cap. However, the efficiency of this two-step riveting method is too low, resulting in waste of personnel and equipment. What is more, in order to guarantee that the nut is accurately pre-pressed into the metal cap, a station must be arranged to hold the nut, so that the nut is accurately pre-pressed into the metal cap, and a stabilizing and guiding effect is provided.

Therefore, the technical personnel in the field are dedicated to develop a nut turning and riveting tool which has high nut riveting efficiency and can be formed by riveting once in one process.

SUMMERY OF THE UTILITY MODEL

In view of the above-mentioned defect of prior art, the utility model aims to solve the technical problem that a nut turns over riveting frock that riveting is efficient, one process is riveted once and is shapable is provided.

In order to achieve the purpose, the utility model provides a nut turns over and rivets frock, including the die sleeve, the die sleeve front end has seted up the opening, the opening is linked together with the inner chamber that sets up in the die sleeve, install the pre-compaction mold core that can stretch out the opening in the inner chamber, the pre-compaction mold core afterbody is spacing in the inner chamber; the inner cavity is internally provided with a spring, the front end of the spring abuts against the pre-pressing mold core, and the rear end of the spring abuts against the bottom of the inner cavity.

Preferably, the front end of the prepressing mold core is provided with a nut accommodating cavity.

Preferably, the nut accommodating cavity is conical and the diameter of the front end is larger than that of the rear end.

Preferably, a strong magnet is arranged in the pre-pressing die core at the rear end of the nut accommodating cavity.

Preferably, the diameter of the tail part of the prepressing mold core is larger than the inner diameter of the tail end of the opening part.

Preferably, a jointed alloy mold core is arranged in the opening part.

Preferably, the bottom of the die sleeve is in threaded connection with a die post, and the rear end of the spring abuts against the front end face of the die post.

Preferably, the mold pillar is internally provided with an exhaust hole leading to the inner cavity.

Preferably, the opening part comprises a first opening part section, a second opening part section and a third opening part section which are sequentially connected, wherein the inner diameter of the first opening part section is 31.5mm, the inner diameter of the third opening part section is 27.3mm, the second opening part section is a smooth cambered surface connecting the first opening part section and the third opening part section, and a fillet is arranged between the first opening part section and the second opening part section.

The utility model has the advantages that: the utility model discloses can realize taking the nut (like wheel nut) of metal cap disposable riveting to accomplish, and the nut can stably impress the metal cap, does not send the pressure partially, and the wearability is good simultaneously, long service life, easy maintenance.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention.

Fig. 2 is an enlarged schematic view of a structure at a in fig. 1.

Fig. 3 is a schematic structural diagram of a die sleeve according to an embodiment of the present invention.

Fig. 4 is a schematic structural diagram of an operating state according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and examples, wherein it is noted that, in the description of the invention, the terms "upper", "lower", "left", "right", "inner", "outer", etc. indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular manner, and therefore should not be construed as limiting the present invention. The terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

As shown in fig. 1 and 2, the nut turning and riveting tool comprises a die sleeve 2, wherein an opening part is formed in the front end of the die sleeve 2, and an attached alloy die core 12 is arranged in the opening part, so that the wear resistance of the opening part is improved. The opening part is communicated with an inner cavity 21 arranged in the die sleeve 2, the prepressing die core 1 capable of extending out of the opening part is arranged in the inner cavity 21, and the tail part of the prepressing die core 1 is limited in the inner cavity 21. In other embodiments, the movement track of the pre-pressing mold core 1 may also be limited by providing a snap or the like. The inner cavity 21 is internally provided with a spring 5, the front end of the spring 5 is propped against the prepressing die core 1, and the rear end of the spring 5 is propped against the bottom of the inner cavity 21. In this implementation is novel, need to guarantee that the length of pre-compaction mold core 1 stretches out the opening of die sleeve 2 under the normal condition of spring 5.

The front end of the prepressing die core 1 is provided with a nut accommodating cavity 11, the nut accommodating cavity 11 is conical, the diameter of the front end of the nut accommodating cavity is larger than that of the rear end of the nut accommodating cavity, so that the nut accommodating cavity can be matched with a nut 14 to be riveted, and the nut 14 is stable and not biased. Strong magnetism 4 is arranged at the rear end of the nut accommodating cavity 11 in the pre-pressing mold core 1, so that the nut 14 can be smoothly adsorbed on the pre-pressing mold core 1.

Threaded connection has die post 3 bottom the die sleeve 2 to make 5 rear ends of spring support by terminal surface before die post 3, thereby die post 3 is connected on power machinery (not shown) and is fixed this application on power machinery, and the external screw thread of 3 front ends of die post and the internal thread 10 cooperation of setting at die sleeve 2 make the utility model discloses an installation, dismantlement, maintenance are all very convenient. The inside of the mold column 3 is provided with an exhaust hole 16 leading to the inner cavity 21, which is convenient for exhausting during pre-pressing

As shown in figure 3, the opening part comprises a first opening part section, a second opening part section and a third opening part section which are sequentially connected, wherein the inner diameter phi 1 of the first opening part section is 31.5mm, the inner diameter phi 3 of the third opening part section is 27.3mm, the second opening part section is a smooth cambered surface connecting the first opening part section and the third opening part section, and a fillet 8 is arranged between the first opening part section and the second opening part section. The inner diameters of the first opening section and the second opening section are allowed to have an error of 0.05 mm. The arrangement of the inner diameter and the round angle can guide the outer edge of the metal cap to contract inwards.

The utility model discloses during the use, fix metal cap 15 in advance in 1 the place ahead of pre-compaction mold core just to locate, go up mould (not shown in the drawing) and deliver to pre-compaction mold core 1 department with nut 14, because strong magnetism 4's reason, 14 tip of nut can stably adsorb in the nut holds intracavity 11, power machine provides power, make the mould post 3 and the die sleeve 2 move left, press into metal cap 15 earlier with nut 14 in advance, mould post 3 and die sleeve 2 continue to move left again, as shown in figure 4, 14 middle parts of nut get into the opening, realize riveting the shaping to turning over of nut 14 and metal cap 15 under alloy mold core 12's the pressing down. Therefore, only one working station and one working procedure are needed to complete the rivet-turning forming of the metal cap 15 and the nut 14.

The foregoing has described in detail preferred embodiments of the present invention. It should be understood that numerous modifications and variations can be devised by those skilled in the art in light of the teachings of the present invention without undue experimentation. Therefore, the technical solutions that can be obtained by a person skilled in the art through logic analysis, reasoning or limited experiments based on the prior art according to the concepts of the present invention should be within the scope of protection defined by the claims.

Claims

1. The utility model provides a nut turns over frock of riveting which characterized by: the mould comprises a mould sleeve (2), wherein an opening part is formed in the front end of the mould sleeve (2), the opening part is communicated with an inner cavity (21) arranged in the mould sleeve (2), a prepressing mould core (1) capable of extending out of the opening part is arranged in the inner cavity (21), and the tail part of the prepressing mould core (1) is limited in the inner cavity (21); a spring (5) is arranged in the inner cavity (21), the front end of the spring (5) abuts against the pre-pressing mold core (1), and the rear end of the spring abuts against the bottom of the inner cavity (21).

2. The nut rivet turning tool according to claim 1, characterized in that: the front end of the prepressing mold core (1) is provided with a nut accommodating cavity (11).

3. The nut rivet turning tool according to claim 2, characterized in that: the nut accommodating cavity (11) is conical, and the diameter of the front end of the nut accommodating cavity is larger than that of the rear end of the nut accommodating cavity.

4. The nut rivet turning tool according to claim 2, characterized in that: and a strong magnet (4) is arranged at the rear end of the nut accommodating cavity (11) in the pre-pressing mold core (1).

5. The nut rivet turning tool according to claim 1, characterized in that: the diameter (D1) of the tail part of the prepressing die core (1) is larger than the inner diameter (D2) of the tail end of the opening part.

6. The nut rivet turning tool according to claim 1, characterized in that: an attached alloy mold core (12) is arranged in the opening part.

7. The nut rivet turning tool according to claim 1, characterized in that: the bottom of the die sleeve (2) is in threaded connection with a die column (3), and the rear end of the spring (5) abuts against the front end face of the die column (3).

8. The nut rivet turning tool according to claim 7, characterized in that: and an exhaust hole (16) leading to the inner cavity (21) is formed in the mold column (3).

9. The nut rivet turning tool according to claim 1, characterized in that: the opening part comprises a first opening part section, a second opening part section and a third opening part section which are sequentially connected, wherein the inner diameter (phi 1) of the first opening part section is 31.5mm, the inner diameter (phi 3) of the third opening part section is 27.3mm, the second opening part section is a smooth cambered surface which is connected with the first opening part section and the third opening part section, and a fillet (8) is arranged between the first opening part section and the second opening part section.