CN211331019U

CN211331019U - Stamping device for rivet nut

Info

Publication number: CN211331019U
Application number: CN201922097393.3U
Authority: CN
Inventors: 袁炜
Original assignee: KUNSHAN ESON PRECISION ENGINEERING CO LTD
Current assignee: KUNSHAN ESON PRECISION ENGINEERING CO LTD
Priority date: 2019-11-29
Filing date: 2019-11-29
Publication date: 2020-08-25
Anticipated expiration: 2029-11-29

Abstract

The utility model discloses a punching device of a rivet nut, which comprises a jacking mechanism and a limiting punch; the jacking mechanism is provided with an avoiding groove, and the notch of the avoiding groove is larger than the outer diameter of the screw of the rivet nut but smaller than the outer diameter of the screw sleeve of the rivet nut; spacing drift can be fixed a position the spiral shell head of rivet nut, relative motion can take place in order to make the screw rod sleeve pipe receive the pressure deformation with spacing drift in jack-up mechanism and realize riveting, the utility model discloses riveting process is simple, weak point consuming time, can show improvement riveting efficiency.

Description

Stamping device for rivet nut

Technical Field

The utility model relates to a rivet nut's stamping device belongs to five metals stamping die technical field.

Background

The rivet nut is a common riveting fastener product in the current market, changes the traditional mode of mounting parts on a thin plate, and is a breakthrough of the plate connection process. The common rivet nut in the prior art comprises a screw head, a screw rod and a screw rod sleeve, wherein the screw rod sleeve is in threaded connection with the screw rod, one end of the screw head is connected with a flange, and the other end of the screw head is connected with the screw rod sleeve. The rivet nut is riveted by a rivet gun through the rotation of the screw thread to generate pulling force, so that the screw sleeve of the rivet nut is locally deformed to achieve the riveting effect.

The riveting nut in the current market is riveted by a pneumatic or manual riveting gun, the riveting process is complex in operation, low in labor efficiency and high in cost, and the quality and the production efficiency of products are affected.

Disclosure of Invention

An object of the utility model is to overcome not enough among the prior art, provide a draw stamping device who rivets nut, can improve riveting efficiency.

In order to achieve the purpose, the utility model is realized by adopting the following technical scheme:

on one hand, the utility model provides a punching device of a rivet nut, which comprises a jacking mechanism and a limiting punch;

the jacking mechanism is provided with an avoiding groove, and the notch of the avoiding groove is larger than the outer diameter of the screw of the rivet nut but smaller than the outer diameter of the screw sleeve of the rivet nut; the limiting punch can be used for positioning the screw head of the rivet nut, and the jacking mechanism can move relative to the limiting punch to enable the screw sleeve to be pressed and deformed.

Furthermore, the limiting punch comprises a limiting seat and a limiting bulge connected to the limiting seat, the limiting seat can at least partially cover the flange plate of the screw head, and the shape and the size of the limiting bulge are matched with the through hole in the middle of the screw head.

Furthermore, the height of the limiting protrusion is not larger than the thickness of the workpiece to be riveted.

Furthermore, the limiting punch further comprises a punch cushion block, and the punch cushion block and the limiting protrusion are respectively arranged on two opposite side surfaces of the limiting seat.

Further, the jacking mechanism comprises a jacking sleeve and a jacking rod; the ejector rod is placed into the ejector sleeve from one end of the jacking sleeve, and forms the avoidance groove with the other end of the jacking sleeve.

Furthermore, the jacking mechanism further comprises a jacking seat and a jacking and supporting block, one end of the jacking sleeve, which is connected with the ejector rod, is fixedly connected with the jacking seat, and the other end of the jacking sleeve is connected with the jacking and supporting block in a sliding manner.

Further, the depth of the avoidance groove is not less than the length of the screw rod.

Compared with the prior art, the utility model discloses the beneficial effect who reaches is:

locate the notch of dodging the groove on the jack-up mechanism and be greater than the screw rod external diameter of rivet nut, nevertheless be less than the external diameter of the screw rod sleeve pipe of rivet nut, spacing drift can fix a position the spiral shell head of rivet nut, and jack-up mechanism can take place relative motion in order to make screw rod sleeve pipe compressive deformation realize riveting with spacing drift, and the riveting process is simple, consuming time weak point, can show improvement riveting efficiency.

Drawings

Fig. 1 is a schematic structural view of a riveting nut stamping device according to an embodiment of the present invention in an initial state;

fig. 2 is a schematic structural view of the stamping device for the blind rivet nut according to the embodiment of the present invention after the positioning of the screw head is completed;

fig. 3 is a schematic structural view of a riveting completed by the punching device for the blind rivet nut according to the embodiment of the present invention;

in the figure: 1. a workpiece; 2. pulling and riveting the nut; 3a, jacking up the sleeve; 3b, a jacking seat; 3c, a mandril; 3d, jacking up the supporting block; 3e, avoiding the groove; 4. a limiting bulge; 5. and a punch head cushion block.

Detailed Description

The present invention will be further described with reference to the accompanying drawings. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 to 3, the embodiment of the present invention provides a punching device for a blind rivet nut 2, which comprises a jacking mechanism and a limiting punch.

The spacing drift can fix a position the spiral shell head of rivet nut 2, and rivet nut 2 takes place the dislocation when avoiding the punching press, helps improving the riveting precision. An avoiding groove 3e is formed in the jacking mechanism, and the notch of the avoiding groove 3e is larger than the outer diameter of the screw of the rivet nut 2 and smaller than the outer diameter of the screw sleeve of the rivet nut 2. During punching, the screw of the rivet nut 2 is aligned to the avoiding groove 3e, the screw sleeve is supported on the periphery of the notch of the avoiding groove 3e, and the jacking mechanism and the limiting punch move relatively to promote the screw sleeve to deform under pressure to realize riveting of the workpiece 1.

The embodiment of the utility model provides a stamping device riveting process is simple, weak point consuming time, can show improvement riveting efficiency.

According to the embodiment, the limiting punch comprises a limiting seat and a limiting bulge 4 connected to the limiting seat, the limiting seat can at least partially cover a flange plate of the screw head, and the shape and the size of the limiting bulge 4 are matched with the through hole in the middle of the screw head. The limiting bulge 4 is inserted into the through hole in the middle of the screw head, so that the limiting seat is tightly attached to the flange plate of the screw head, and the screw head of the rivet nut 2 is positioned.

In order to prevent the overlong limiting bulge 4 from causing incomplete deformation of the screw sleeve, the height of the limiting bulge 4 is not more than the thickness of the workpiece 1 to be riveted. In a similar way, the depth of the avoiding groove 3e is not less than the length of the screw rod, the screw rod is pushed against the bottom of the avoiding groove 3e in the stamping process, the stamping of the screw rod sleeve is incomplete, and the riveting strength, the riveting quality and the attractiveness of the workpiece 1 are reduced.

The limiting punch further comprises a punch cushion block 5, the punch cushion block 5 and the limiting protrusion 4 are respectively arranged on two opposite side faces of the limiting seat, and the punch cushion block 5 can enhance the mechanical strength of the limiting protrusion 4.

In one embodiment, the jacking mechanism comprises a jacking sleeve 3a and a jacking rod 3 c; the jack-up pin 3c is inserted from one end of the jack-up sleeve 3a, and forms an escape groove 3e with the other end of the jack-up sleeve 3 a. The assembly structure of the jacking sleeve 3a and the jacking rod 3c is more convenient for the production and processing of the jacking mechanism.

For reinforcing the stability and the mechanical strength of jack-up mechanism, jack-up mechanism still includes jack-up seat 3b and jack-up piece 3d, and the one end that jack-up sleeve 3a links to each other with ejector pin 3c and jack-up seat 3b fixed connection, the other end and jack-up piece 3d sliding connection. The jacking-up blocks 3d can act as lateral reinforcement for the jacking-up sleeve 3 a.

The embodiment of the utility model provides a riveting method of rivet nut 2 is still provided, the method includes following step:

the method comprises the following steps: and (3) feeding the rivet nut 2: inserting a screw sleeve of the rivet nut 2 into a riveting hole of a workpiece 1 to be riveted;

step two: positioning a screw head: positioning the screw head of the rivet nut 2 by using a limiting punch;

step three: punching and riveting: the screw of the rivet nut 2 is aligned to the avoiding groove 3e of the jacking mechanism, and the screw sleeve is supported on the periphery of the notch of the avoiding groove 3e, so that the jacking mechanism and the limiting punch move relatively to promote the screw sleeve to deform under pressure, and the riveting of the workpiece 1 is realized.

For realizing improving 2 riveted degree of automation of rivet nut, to step one 2 material loading of rivet nut can realize automatic feeding with the help of vibration dish and manipulator, specifically do:

screening the rivet nuts 2 by adopting a vibrating disc so that the rivet nuts 2 can enter a preset track in a specific direction;

the materials are conveyed to a feeding station of the rivet nut 2 through a rail;

and picking up the blind rivet nut 2 at the feeding station by adopting a feeding manipulator, conveying the blind rivet nut 2 to the riveting station according to a preset motion trail, and inserting the screw sleeve into the riveting hole of the workpiece 1 to be riveted.

For the stamping riveting described in the third step, the position alignment can be realized by using a camera, a position sensor and other structural members.

The embodiment of the utility model provides a only take place relative motion through jack-up mechanism and spacing drift and make screw rod sleeve pipe compressive deformation realize riveting, riveting process is simple, weak point consuming time, can show improvement riveting efficiency.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element 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 present invention. Furthermore, the terms "first", "second", etc. 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," "second," etc. may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless otherwise specified.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, 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 meaning of the above terms in the present invention can be understood by those of ordinary skill in the art through specific situations.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be considered as the protection scope of the present invention.

Claims

1. A punching device for a rivet nut is characterized by comprising a jacking mechanism and a limiting punch;

2. The drawing device for the blind rivet nut according to claim 1, characterized in that the limiting punch comprises a limiting seat and a limiting protrusion connected to the limiting seat, the limiting seat can at least partially cover the flange of the screw head, and the shape and size of the limiting protrusion are matched with the through hole in the middle of the screw head.

3. The apparatus of claim 2, wherein the height of the stop protrusion is no greater than the thickness of the workpiece to be riveted.

4. The apparatus of claim 2, wherein the retaining punch further comprises a punch pad, and the punch pad and the retaining protrusion are disposed on opposite sides of the retaining base.

5. The apparatus of claim 1, wherein the jacking mechanism comprises a jacking sleeve and a ram; the ejector rod is placed into the ejector sleeve from one end of the jacking sleeve, and forms the avoidance groove with the other end of the jacking sleeve.

6. The apparatus according to claim 5, wherein the jacking mechanism further comprises a jacking seat and a jacking block, one end of the jacking sleeve connected with the mandril is fixedly connected with the jacking seat, and the other end of the jacking sleeve is slidably connected with the jacking block.

7. The apparatus of claim 1, wherein the depth of the relief groove is no less than the length of the screw.