CN214563230U

CN214563230U - Nitrogen spring type flanging ejector

Info

Publication number: CN214563230U
Application number: CN202022835799.XU
Authority: CN
Inventors: 李广平; 吴亚松
Original assignee: Wuhan Dongfeng Iem Die Components Co ltd
Current assignee: Wuhan Dongfeng Iem Die Components Co ltd
Priority date: 2020-11-30
Filing date: 2020-11-30
Publication date: 2021-11-02
Anticipated expiration: 2030-11-30

Abstract

The utility model discloses a nitrogen spring formula turn-ups ejector, include: the mounting seat is used for being fixedly connected with the die and is provided with a guide sleeve mounting hole; the guide sleeve is sleeved and fixed in the guide sleeve mounting hole; the ejection cylinder is arranged in the guide sleeve in a sliding manner and can slide up and down along the guide sleeve, and the upper end of the ejection cylinder can be connected with a material pushing plate for ejecting a workpiece; the nitrogen spring comprises a fixed part and a movable part which move relatively, the fixed part is fixedly connected with the material ejecting cylinder, and the movable part freely extends out of the lower part of the material ejecting cylinder; and the nitrogen spring top block is provided with a fixed position relative to the mould and is used for upwards supporting the movable part of the nitrogen spring. The flanging ejector adopts the nitrogen spring to provide the elastic force source, the available times and the stability are better, a larger elastic force selection space can be provided, the guide sleeve is adopted to realize the guiding function with high precision and high stability, the whole body is compact, the die space can be saved, and the die cost is reduced.

Description

Nitrogen spring type flanging ejector

Technical Field

The utility model relates to a turn-ups ejector for stamping die especially indicates a nitrogen spring formula turn-ups ejector.

Background

In a mold ejection device, a rectangular spring is often used as an elastic source ejection device, but the stability of the traditional rectangular spring is poor, and the use times are limited. And the traditional flanging ejection device is characterized in that an ejection sleeve is directly matched with a cast iron base in a sliding manner, the guiding precision is low, and the base is greatly abraded.

Disclosure of Invention

An object of the utility model is to provide a reliable and stable nitrogen spring turn-ups ejector.

In order to achieve the above object, the utility model relates to a nitrogen gas spring turn-ups ejector, include: the mounting seat is used for being fixedly connected with the die and is provided with a guide sleeve mounting hole; the guide sleeve is sleeved and fixed in the guide sleeve mounting hole; the ejection cylinder is arranged in the guide sleeve in a sliding manner and can slide up and down along the guide sleeve, and the upper end of the ejection cylinder can be connected with a material pushing plate for ejecting a workpiece; the nitrogen spring comprises a fixed part and a movable part which move relatively, the fixed part is fixedly connected with the material ejecting cylinder, and the movable part freely extends out of the lower part of the material ejecting cylinder; and the nitrogen spring top block is provided with a fixed position relative to the mould and is used for upwards supporting the movable part of the nitrogen spring. Because the lower extreme of movable part is spacing by nitrogen spring kicking block, the stiff end can drive the liftout section of thick bamboo rebound, accomplishes the lifting function.

Preferably, the flanging ejector further comprises a limiting structure for safely limiting the upward displacement end point of the ejection barrel.

Furthermore, the limiting structure comprises a limiting concave table positioned on the side surface of the material pushing barrel and a limiting pressing plate fixed on the upper part of the mounting seat and forming limiting with the limiting concave table.

Furthermore, the corresponding positions of the limiting pressure plate and the limiting concave table are respectively provided with a pin hole for installing a pin to lock the position of the ejection cylinder so as to ensure that the ejection cylinder does not shake in the transportation process.

Preferably, the fixed part of the nitrogen spring is a cylinder, and the movable part is a piston rod. Furthermore, the upper part of the cylinder is sleeved in a cylinder mounting hole formed in the ejection cylinder, and the lower part of the cylinder is fixedly mounted on a flange fixing concave platform at the lower end of the ejection cylinder through a cylinder mounting flange.

Optionally, the nitrogen spring top block is fixedly installed at the lower part of the installation seat, or is of an integral structure with the installation seat, or is arranged independently of the installation seat and can be fixedly installed on the die.

Preferably, the guide sleeve is in interference fit with the guide sleeve mounting hole.

Preferably, the lower end of the guide sleeve mounting hole is provided with an annular boss protruding inwards for limiting the lower end of the guide sleeve and preventing the guide sleeve from being taken out in the compression process of the nitrogen spring.

Preferably, the upper end of the ejector barrel is provided with a material pushing plate mounting hole for connecting a material pushing plate.

Compared with the prior art, the beneficial effects of the utility model reside in that:

1) the nitrogen spring is adopted to provide an elastic force source, the elastic force of the nitrogen spring is larger than that of a traditional rectangular spring, the available times and the stability are better, and the nitrogen spring has larger elastic force selection space.

2) The guide sleeve is arranged on the mounting seat to guide and slide the ejection cylinder, so that the guide function of high precision and high stability can be realized, the guide sleeve can be directly replaced after being worn, the mounting seat does not need to be replaced, and the maintenance cost is reduced.

3) The structure is compact, the die space can be saved, and the die cost is reduced.

Drawings

Fig. 1 is a schematic structural diagram of a nitrogen spring type flanging ejector designed in the embodiment of the present invention.

Fig. 2 is a front view structural schematic diagram of the flange ejector in fig. 1.

Fig. 3 is a sectional view taken along line a-a of fig. 2.

Fig. 4 is an exploded view of the flange ejector of fig. 1.

Fig. 5 is a schematic structural view of the flanging ejector in fig. 1, except for the mounting seat and the guide sleeve.

Fig. 6 is an exploded view of fig. 5.

Fig. 7 is a schematic diagram of the application of the flanging ejector in fig. 1 in a mold (the mold is only partially shown), in which a solid line material pushing plate is a position when the nitrogen spring is completely compressed, and a dotted line material pushing plate (located above) represents a position when the nitrogen spring is extended, i.e., material is pushed.

Fig. 8 shows another configuration of the flange ejector of fig. 1, in which the nitrogen spring top block is fixed to the mounting base.

In the above figures, the portion of the piston rod of the nitrogen spring that passes through the nitrogen spring top block represents the piston rod travel, and the piston rod does not actually pass through the nitrogen spring top block.

Wherein: the device comprises a mounting seat 10, a guide sleeve mounting hole 11, a limiting pressure plate 12, an annular boss 13, a guide sleeve 20, a material ejecting barrel 30, a material pushing plate mounting hole 31, a limiting concave table 32, a cylinder mounting hole 33, a nitrogen spring 40, a piston rod 41, a cylinder 42, a nitrogen spring ejector block 50, a cylinder mounting flange 60, a material pushing plate 70, a die 80, a screw hole 91, a pin hole 92, a screw 93 and a pin 94.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments.

As shown in fig. 1-6, the utility model discloses a nitrogen gas spring turn-ups ejector, including mount pad 10, guide pin bushing 20, liftout section of thick bamboo 30, nitrogen gas spring 40 and nitrogen gas spring kicking block 50, wherein:

the shoulders at the two sides of the mounting seat 10 are provided with a screw hole 91 and a pin hole 92 for connecting the die 80, one side of the upper part is provided with a screw hole 91 and a pin hole 92 for fixing the limiting pressure plate 12, and the middle part is provided with a guide sleeve mounting hole 11 which is through up and down.

The guide sleeve 20 is in interference fit with the guide sleeve mounting hole 11 and fixed therein. The guide sleeve 20 is used for accurate guiding, is made of copper, is convenient to replace when worn, and saves time and cost. The lower end of the guide sleeve mounting hole 11 is provided with an annular boss 13 protruding inwards for limiting the lower end of the guide sleeve 20 and preventing the guide sleeve from being brought out in the compression process of the nitrogen spring 40.

The ejector barrel 30 is slidably arranged in the guide sleeve 20 and can slide up and down along the guide sleeve 20, the upper end of the ejector barrel is provided with an ejector plate mounting hole 31 for connecting the ejector plate 70, and the ejector plate 70 can be connected through screws for ejecting.

The nitrogen spring 40 includes a fixed portion and a movable portion (herein, fixed and movable are referred to as the ejector cartridge) which are relatively movable, the fixed portion is fixedly connected to the ejector cartridge 30, and the movable portion freely protrudes from the lower portion of the ejector cartridge 30. In the present embodiment, the fixed portion of the nitrogen spring 40 is the cylinder 42, and the movable portion is the piston rod 41. The fixed portion and the movable portion of the nitrogen spring 40 can be interchanged by simply changing the mounting structure.

The upper part of the cylinder 42 is sleeved in the cylinder mounting hole 33 arranged in the ejector barrel 30, and the lower part is fixedly mounted on a flange fixing concave platform at the lower end of the ejector barrel 30 through a cylinder mounting flange 60 and a screw 93.

The nitrogen spring top block 50 has a fixed position with respect to the mold 80 for supporting the movable portion of the nitrogen spring 40 upward.

The nitrogen spring top block 50 is provided separately from the mounting seat 10 and is fixedly mounted on the mold 80, and may also be fixedly mounted on the lower portion of the mounting seat 10 (as shown in fig. 8), or may be integrally formed with the mounting seat 10.

In order to improve the safety, the flanging ejector is also provided with a limiting structure for safely limiting the upward displacement end point of the ejection barrel 30. The limiting structure specifically comprises a limiting concave table 32 and a limiting pressing plate 12, wherein the limiting concave table 32 is located on the side face of the ejection barrel 30, the limiting pressing plate 12 is installed on the upper portion of the installation seat 10 through a screw 93 and a pin 94, and the limiting pressing plate and the limiting concave table 32 form limiting from one side.

The flanging ejector can select different strokes according to different fluctuation heights of a workpiece, and the size of the elastic force is customized according to needs.

As shown in fig. 7, in use, the mounting seat 10 and the nitrogen spring ejector block 50 are respectively and fixedly mounted on a mold 80 (a lower mold in the figure), and the ejector plate 70 is mounted at the upper end of the ejector sleeve 30. When punching is performed, the material pushing plate 70 moves downwards along with the upper die, and the nitrogen spring 40 is compressed; after the punching is finished, the nitrogen spring 40 extends under the action of the elasticity of the nitrogen spring, and the lower end of the nitrogen spring is limited by the nitrogen spring jacking block 50, so that the upper end air cylinder 42 drives the material pushing plate 70 to move upwards in the extending process, and the finished piece after flanging is jacked up, so that the finished piece is smoothly demoulded.

Claims

1. The utility model provides a nitrogen gas spring turn-ups ejector which characterized in that:

the method comprises the following steps:

the mounting seat (10) is fixedly connected with the die (80), and is provided with a guide sleeve mounting hole (11);

the guide sleeve (20) is sleeved and fixed in the guide sleeve mounting hole (11);

the ejection barrel (30) is slidably matched in the guide sleeve (20) and can slide up and down along the guide sleeve (20), and the upper end of the ejection barrel can be connected with a material pushing plate (70) for ejecting a workpiece;

the nitrogen spring (40) comprises a fixed part and a movable part which move relatively, the fixed part is fixedly connected with the ejector sleeve (30), and the movable part freely extends out of the lower part of the ejector sleeve (30);

and a nitrogen spring top block (50) which has a fixed position relative to the mold (80) and is used for supporting the movable part of the nitrogen spring (40) upwards.

2. The nitrogen spring type flange ejector according to claim 1, characterized in that: the flanging ejector also comprises a limiting structure for safely limiting the upward displacement end point of the ejection barrel (30).

3. The nitrogen spring type flange ejector according to claim 2, characterized in that: the limiting structure comprises a limiting concave table (32) positioned on the side surface of the material ejection barrel (30) and a limiting pressing plate (12) which is fixed on the upper part of the mounting seat (10) and forms limiting with the limiting concave table (32).

4. The nitrogen spring type flange ejector according to claim 3, characterized in that: and the corresponding positions of the limiting pressure plate (12) and the limiting concave table (32) are respectively provided with a pin hole (92) for installing a pin (94) to lock the position of the ejection barrel (30).

5. The nitrogen spring type flange ejector according to claim 1, characterized in that: the fixed part of the nitrogen spring (40) is a cylinder (42), and the movable part is a piston rod (41).

6. The nitrogen spring type flange ejector according to claim 5, characterized in that: the upper part of the cylinder (42) is sleeved in a cylinder mounting hole (33) arranged in the material ejection barrel (30), and the lower part of the cylinder is fixedly mounted on a flange fixing concave platform at the lower end of the material ejection barrel (30) through a cylinder mounting flange (60).

7. The nitrogen spring type flanging ejector according to any one of claims 1-6, characterized in that: the nitrogen spring ejecting block (50) is fixedly arranged at the lower part of the mounting seat (10), or is integrated with the mounting seat (10) into a whole, or is independently arranged with the mounting seat (10) and can be fixedly arranged on the die (80).

8. The nitrogen spring type flanging ejector according to any one of claims 1-6, characterized in that: the guide sleeve (20) is in interference fit with the guide sleeve mounting hole (11).

9. The nitrogen spring type flanging ejector according to any one of claims 1-6, characterized in that: the lower end of the guide sleeve mounting hole (11) is provided with an annular boss (13) protruding inwards for limiting the lower end of the guide sleeve (20).

10. The nitrogen spring type flanging ejector according to any one of claims 1-6, characterized in that: the upper end of the ejector barrel (30) is provided with a material pushing plate mounting hole (31) used for connecting a material pushing plate (70).