CN218903364U

CN218903364U - Cold heading riveting machine

Info

Publication number: CN218903364U
Application number: CN202221316152.9U
Authority: CN
Inventors: 胡志成
Original assignee: Foshan Jiazhirun Electric Co ltd
Current assignee: Foshan Jiazhirun Electric Co ltd
Priority date: 2022-05-27
Filing date: 2022-05-27
Publication date: 2023-04-25
Anticipated expiration: 2032-05-27

Abstract

The utility model discloses a cold heading riveting machine, which comprises a workbench, wherein the workbench is provided with a bottom die, and the bottom die is used for placing a first processing station of a blank; the die is installed on the workbench in a lifting manner, the die is located above the bottom die and is provided with a first through hole, the die is provided with an ejection mechanism capable of relatively moving along the axial direction of the first through hole, one end, close to the bottom die, of the ejection mechanism is provided with a cavity surface, the first through hole is matched with the cavity surface to form a cavity, and the first through hole is matched with the first processing position in shape and size. Therefore, the utility model has the characteristics of simple structure and strong practicability, and can finish demoulding by reducing the burr amount generated during the production of the product and arranging the ejection mechanism to eject the product, thereby reducing the later processing time of the product and solving the problem that the product is difficult to demould, and further improving the production efficiency of the product.

Description

Cold heading riveting machine

Technical Field

The utility model relates to the field of cold heading rivet machine processed products, in particular to a cold heading rivet machine.

Background

When a product is machined by a traditional cold heading rivet machine, a circle of burrs are generated at the large-diameter edge of the head of the product, the burrs are removed through later polishing, and the burrs are formed because blanks are pressed into the shape of the product in the closing process of a forming die and a bottom die, and redundant materials are extruded from the edge of the die to form the burrs. Because the head of the product is in a right-angle cylindrical shape, the product is easy to block in the forming die during demolding, the forming die can be made into a cavity with a demolding angle, and meanwhile, the head of the product is made into the same demolding angle, so that the product is easy to be taken off from the forming die, but the demolding angle cannot be made too large, otherwise, the size and the like do not meet the required qualified size of the product. Therefore, the existing traditional cold heading riveting machine is inconvenient to demould and can generate a large number of burrs, so that follow-up related treatment procedures are carried on, further follow-up work is affected, and the cold heading riveting machine which is convenient to demould and can reduce the burrs of products is needed.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the cold heading riveting machine which is convenient to demold and reduces burrs of products.

According to a first aspect of the utility model, a cold heading riveting machine comprises a workbench, wherein the workbench is provided with a bottom die, and the bottom die is used for placing a first processing station of a blank; the die is arranged on the workbench in a lifting manner, is positioned above the bottom die, is provided with a first through hole, is provided with an ejection mechanism capable of relatively moving along the axial direction of the first through hole, one end of the ejection mechanism, which is close to the bottom die, is provided with a cavity surface, the first through hole is matched with the cavity surface to form a cavity, and the shape and the size of the first through hole are matched with those of the first processing station; the ejection mechanism is provided with an elastic element at one end far away from the bottom die, the elastic element contracts along with the blank pressing of the ejection mechanism, and the ejection mechanism ejects the finished product through elastic reset of the elastic element.

The cold heading riveting machine provided by the embodiment of the utility model has at least the following technical effects: when the mould presses down the product blank, the product blank props against the ejection mechanism, so that the elastic element is stressed and contracted. When the mould is pressed down to the elastic element to shrink completely, the first processing station is clamped in the first through hole, at the moment, the cavity surface, the inner wall of the first through hole and the end surface of the first processing station form a cavity with small tight clearance, so that extruded product blanks in the cavity lack larger gaps to form a large number of burrs. In the demolding process, the elastic element elastically resets to enable the ejection mechanism to eject the product to finish demolding, so that the utility model has the characteristics of simple structure and strong practicability, and the product is ejected to finish demolding by reducing the burr amount generated during production of the product and setting the ejection mechanism, thereby reducing the later processing time of the product and solving the problem that the product is difficult to be demolded, and further improving the production efficiency of the product.

According to some embodiments of the utility model, the bottom die is provided with a second through hole, and the second through hole is provided with a stripping rod which can relatively move along the axial direction of the second through hole.

According to some embodiments of the utility model, the first processing station is a cylindrical structure, and the first processing station is used for placing a blank and is clamped in the first through hole when the die is pressed down.

According to some embodiments of the utility model, the mold comprises a mold base, wherein the mold base is provided with a mounting position, and the mold is fixedly connected with the mold base through the mounting position.

According to some embodiments of the utility model, the feeding mechanism further comprises a feeding mechanism, the feeding mechanism comprises a material taking knife, a feeding pipe and a cam, the material taking knife is provided with a clamping part for clamping blanks, the feeding pipe and the bottom die are located on the same horizontal plane along the vertical direction, and the cam is used for driving the material taking knife to move relatively along the plane of the orifice of the feeding pipe.

According to some embodiments of the utility model, the die holder is provided with a thimble for pressing the blank on the gripping portion into the bottom die, the thimble and the die being located on the same horizontal plane in the vertical direction.

According to some embodiments of the utility model, the mold base further comprises a first moving part and a second moving part, wherein the first moving part is arranged on the second moving part in a manner of relatively moving along the transverse direction, the mold base is fixed on the first moving part, and the second moving part is arranged on the workbench in a manner of relatively moving along the vertical direction.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

Additional aspects and advantages of the present utility model will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings, in which:

FIG. 1 is a schematic diagram of a cold heading riveter according to an embodiment of the present utility model;

FIG. 2 is a schematic view of the cold heading riveter shown in FIG. 1 at another angle;

FIG. 3 is a schematic view of a structure of an ejector mechanism ejecting a product;

fig. 4 is a schematic view of the structure of a die-down blank.

Reference numerals:

a workbench 100, a bottom die 110, a first processing station 120, a second through hole 121 and a stripping rod 1211;

the mold 200, the first through hole 210, the ejection mechanism 220, the elastic element 221, the product 230;

mold base 300, ejector pin 310;

a material taking knife 400, a material feeding pipe 410 and a cam 420;

a first moving part 500, a second moving part 510.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

Referring to fig. 1 to 4, a cold heading rivet machine according to an embodiment of the present utility model includes a table 100, a bottom die 110, and a die 200.

As shown in fig. 1, the table 100 may have an L-shaped structure, the upper portion of the table 100 may be provided with the mold 200, and the lower portion of the table 100 may be provided with the bottom mold 110 such that the mold 200 is positioned right above the bottom mold 110, thereby facilitating the mold 200 to press down the product on the bottom mold 110. As shown in fig. 1, the bottom die 110 is provided with a cylindrical first processing station 120, the first processing station 120 and the bottom die 110 can form a boss structure, the center of the first processing station 120 is provided with a second through hole 121 with the same shape and size as the product, and the second through hole 121 is used for placing and fixing the product to be processed. As shown in fig. 1 to 3, the mold 200 is mounted on the outer sidewall of the table 100 to be relatively movable in a vertical direction along the outer sidewall of the table 100, and the mold 200 is provided with a first through hole 210, and the first through hole 210 may include an upper half of the first through hole 210 and a lower half of the first through hole 210. As shown in fig. 3, the mold 200 is provided with an ejector mechanism 220 that can relatively move along the axial direction of the first through hole 210, the ejector mechanism 220 may include an ejector portion and a shaft, the shaft is mounted in the lower half of the first through hole 210, the ejector portion is mounted in the upper half of the first through hole 210, the tail end of the shaft may be mounted with an elastic element 221, and the elastic element 221 may be an elastic element 221 having an elastic return characteristic such as a spring. The ejection portion is close to one side of die block 110 and is equipped with the die cavity face, and the die cavity face cooperates first through-hole 210 upper half inner wall and the up end of first processing station 120 to form a die cavity that closely clearance is little to be full of the die cavity when making the product blank receive the extrusion, the product blank is difficult to form a large amount of burrs from the narrow and small place in space clearance, thereby reduces the production of burr volume. It should be noted that, as shown in fig. 4, the product is located in a cavity with a small tight gap. Specifically, when the ejector mechanism 220 is pushed down, the product pushes against the ejector mechanism 220 to enable the elastic element 221 to be stressed and contracted, meanwhile, the die 200 continues to push down the cavity surface on the ejector mechanism 220 to push down the processed product, after the processing is completed, the whole die 200 slowly rises upwards, and meanwhile, the elastic element 221 is elastically reset to enable the ejector mechanism 220 to eject the die 200 to complete demoulding. Therefore, the utility model has the characteristics of simple structure and strong practicability, and the product is ejected to finish demolding by reducing the burr amount generated during the production of the product and arranging the elastic element 221 to be matched with the ejection mechanism 220, so that the later processing time of the product is reduced, the problem that the product is difficult to demold is solved, and the production efficiency of the product is improved.

In some embodiments of the present utility model, as shown in fig. 1 to 4, the first processing station 120 is provided with a second through hole 121 at the center, and the second through hole 121 faces the mold 200. The second through hole 121 is provided with a stripper rod 1211 that can relatively move along the axial direction of the second through hole 121, and the stripper rod 1211 is used for providing an upward force when the ejector mechanism 220 presses the product to be processed, so that the surface of the product, which contacts the cavity surface, can be processed and molded more quickly. The first processing station 120 and the bottom die 110 may be integrally formed, and thus the second through hole 121 may be a through hole penetrating the first processing station 120 and the bottom die 110, and the second through hole 121 facilitates the fixing of the stripper bar 1211 and ejection of the product. The second through hole 121 may be identical to the lower half of the blank in size, so that the blank may be stably placed on the first processing station 120, and further the blank may not slip out and fall off when being pressed by the die 200, resulting in product rejection. Specifically, the stripper bar 1211 may include a first cylinder and a second cylinder, the diameter of the first cylinder may be identical to the diameter of the second through hole 121, and the diameter of the second cylinder may be 3 to 5 millimeters smaller than the diameter of the second through hole 121.

In a further embodiment of the present utility model, the end surface of the ejector mechanism 220 close to the bottom die 110 is a cavity surface, which means that the end surface of the ejector mechanism 220 contacting the blank when the die 200 is pressed down is a cavity surface, the shape of the cavity surface is consistent with the shape of the finished product, and the cavity surface on the ejector mechanism 220 is driven by the die 200 to press down to process the blank into the product. As shown in fig. 4, the die 200 may be provided with a first through hole 210 having a size consistent with that of the first processing station 120, so that when the die 200 is pressed down, the first processing station 120 may be clamped in the first through hole 210, so that a cavity with a small tight gap is formed by matching a cavity surface with the inner wall of the upper half section of the first through hole 210 and the upper end surface of the first processing station 120, so that when a product blank is pressed down, the cavity is filled, and a large number of burrs are difficult to form on the product blank from a place with a small space gap, thereby reducing the generation of burrs.

In some embodiments of the present utility model, as shown in fig. 1 and 2, the feeding mechanism includes a material taking knife 400, a material feeding pipe 410 and a cam 420, wherein the material taking knife 400 may be provided with a gripping portion for fixing the blank after cutting the blank, and the gripping portion is provided with a third through hole having a size matched with the diameter of the blank, so that the material taking knife 400 fixes the blank on the third through hole after cutting the blank. The plane of the orifice of the feed pipe 410 may be located on the same horizontal plane as the plane of the knife edge of the extracting knife 400, and the extracting knife 400 may be relatively moved along the direction from the plane of the orifice of the feed pipe 410 to above the first processing station 120 by the driving of the cam 420. Through setting up the portion of gripping and getting makes the blank be difficult to drop in the transportation to ensure the pay-off efficiency of blank. It should be noted that the feed pipe 410 and the bottom die 110 are located on the same horizontal plane in the vertical direction, which means that the horizontal plane is located on the central axis of both the feed pipe 410 and the bottom die 110.

In a further embodiment of the present utility model, as shown in fig. 1 and 2, the mold base 300 includes a first moving part 500 and a second moving part 510, the first moving part 500 is relatively movably mounted on the second moving part 510 along a transverse direction, the mold base 300 is fixed on the first moving part 500, the second moving part 510 is relatively movably mounted on the table 100 along a vertical direction, the mold base 300 is provided with a thimble 310 for pressing a blank on the gripping part into the bottom mold 110, and the thimble 310 and the mold 200 reciprocate transversely through the first moving part 500, so that the thimble 310 and the mold 200 adjust positions at any time to press the bottom mold 110. Specifically, the first moving part 500 and the second moving part 510 may be connected to a transmission mechanism such as an external driving motor and a link connection, so that the first moving part 500 and the second moving part 510 relatively move in a lateral or vertical direction. Further, the first moving part 500 may be provided with a mounting hole, the first moving part 500 is mounted on the connecting rod through the mounting hole and the connecting rod by the fixing pin, and the other end of the connecting rod is connected with the motor. It should be noted that the ejector pins 310 and the mold 200 are located on the same horizontal plane in the vertical direction, which means that the horizontal plane is located on the central axis of both the ejector pins 310 and the mold 200. It should be noted that the motor and the connecting rod are not marked in the drawings of the specification.

In the description of the present specification, reference to the term "some embodiments" or the like means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the utility model. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present utility model have been shown and described, it will be understood by those of ordinary skill in the art that: many changes, modifications, substitutions and variations may be made to the embodiments without departing from the spirit and principles of the utility model, the scope of which is defined by the claims and their equivalents.

Claims

1. A cold heading riveter, characterized by comprising:

a work table (100), wherein the work table (100) is provided with a bottom die (110), and the bottom die (110) is used for placing a first processing station (120) of a blank;

the die (200) is installed on the workbench (100) in a lifting manner, the die (200) is located above the bottom die (110), the die (200) is provided with a first through hole (210), the die (200) is provided with an ejection mechanism (220) capable of relatively moving along the axial direction of the first through hole (210), one end, close to the bottom die (110), of the ejection mechanism (220) is provided with a cavity surface, the first through hole (210) is matched with the cavity surface to form a cavity, and the first through hole (210) is matched with the first processing station (120) in shape and size;

the ejector mechanism (220) is provided with an elastic element (221) at one end far away from the bottom die (110), the elastic element (221) contracts along with the blank pressing of the ejector mechanism (220), and the ejector mechanism (220) elastically resets through the elastic element (221) to eject the finished product.

2. The cold heading riveter of claim 1, wherein: the bottom die (110) is provided with a second through hole (121), and the second through hole (121) is provided with a stripping rod (1211) which can relatively move along the axial direction of the second through hole (121).

3. The cold heading riveter of claim 2, wherein: the first processing station (120) is of a cylindrical structure, and the first processing station (120) is used for placing a blank and is clamped in the first through hole (210) when the die (200) is pressed down.

4. The cold heading riveter of claim 1, wherein: the mold comprises a mold seat (300), wherein the mold seat (300) is provided with a mounting position, and the mold (200) is fixedly connected with the mold seat (300) through the mounting position.

5. The cold heading riveter of claim 1, wherein: still include feeding mechanism, feeding mechanism includes gets material sword (400), inlet pipe (410) and cam (420), it is equipped with the portion of getting that is used for pressing from both sides the blank to get material sword (400), inlet pipe (410) with die block (110) are located along the same horizontal plane of vertical direction, cam (420) are used for the drive get material sword (400) along inlet pipe (410) mouth of pipe plane relative movement.

6. The cold heading riveter of claim 5, wherein: the die seat (300) is provided with a thimble (310) for pressing the blank on the clamping part into the bottom die (110), and the thimble (310) and the die (200) are positioned on the same horizontal plane along the vertical direction.

7. The cold heading riveter of claim 6, wherein: the mold base (300) is fixed on the first moving part (500), and the second moving part (510) is mounted on the workbench (100) in a manner of relatively moving along the vertical direction.