CN113432493A

CN113432493A - Small-caliber ammunition intelligent assembly primer press-fitting mechanism with flexible self-centering function

Info

Publication number: CN113432493A
Application number: CN202110727204.5A
Authority: CN
Inventors: 万秋里; 王成恩; 肖锋
Original assignee: Shanghai Jiaotong University
Current assignee: Shanghai Jiaotong University
Priority date: 2021-06-29
Filing date: 2021-06-29
Publication date: 2021-09-24
Anticipated expiration: 2041-06-29
Also published as: CN113432493B

Abstract

A small-bore ammunition intelligence assembly primer pressure equipment mechanism with flexible self-centering function includes: the depression bar and the push rod that set up relatively, from top to bottom set gradually in shell case, primer and the fixed mounting flange between them and set up in the outside a pair of movable push pedal of fixed mounting flange and fixed planking, wherein: one end of the cartridge case is sleeved at the tail end of the pressing rod, and the other end of the cartridge case is arranged in the fixed assembly flange. The automatic bullet assembling device can realize accurate positioning of primer and a bullet shell in the automatic bullet assembling process and accurate pressing with controllable pressing force, and has the advantages of simple and reliable structure, high efficiency and strong practicability.

Description

Small-caliber ammunition intelligent assembly primer press-fitting mechanism with flexible self-centering function

Technical Field

The invention relates to a technology in the field of intelligent assembly of small-caliber ammunition, in particular to a primer press-fitting mechanism for intelligent assembly of small-caliber ammunition with a flexible self-centering function.

Background

The small-caliber ammunition is one of the most basic combat equipment special for national defense, and the existing small-caliber bullet automatic assembly technology has certain failure rate in the primer press-fitting process. The reasons include that the relative position, i.e. coaxiality, of the primer and the cartridge case cannot be well guaranteed in the press-fitting process, and the press-fitting force is not well detected and fed back in the press-fitting process.

Disclosure of Invention

Aiming at the defects in the prior art, the invention provides the small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function, which can realize the accurate positioning of the primer and the cartridge case in the automatic bullet assembly process and the controllable and accurate press-fitting force, and has the advantages of simple and reliable structure, high efficiency and strong practicability.

The invention is realized by the following technical scheme:

the invention relates to a small-caliber ammunition intelligent assembly primer press-fitting mechanism with a flexible self-centering function, which comprises: the depression bar and the push rod that set up relatively, from top to bottom set gradually in shell case, primer and the fixed mounting flange between them and set up in the outside a pair of movable push pedal of fixed mounting flange and fixed planking, wherein: one end of the cartridge case is sleeved at the tail end of the pressing rod, and the other end of the cartridge case is arranged in the fixed assembly flange.

The movable push plate comprises a limiting mechanism arranged at one end and a contact end with a return spring arranged at the other end, the contact end linked with the return spring is contacted with the fixed assembly flange, and the limiting mechanism is contacted with the fixed outer plate to realize automatic centering, and can be driven by a motor or an air cylinder.

Technical effects

The invention integrally solves the defect that the relative position, namely the coaxiality, of the primer and the cartridge case cannot be well ensured in the prior art, and solves the defect that the press-mounting force is not accurately detected and fed back in the press-mounting process of the primer; compared with the prior art, the invention effectively ensures the coaxiality of the primer and the cartridge case in the press mounting process through the thin strip-shaped fixed assembly flange and the movable push plate with the centering function; through installing the pressure sensor on the push rod, guaranteed the advance accurate detection and the feedback of pressure equipment power in the pressure equipment process, can realize more meticulous intelligent assembly.

Drawings

FIG. 1 is a top view of the overall mechanism of the present invention;

FIG. 2 is an isometric view of the overall mechanism of the present invention;

FIG. 3 is a schematic view of the cartridge case primer positioning, partial section and press-fitting process of the mechanism of the present invention;

FIGS. 4a and 4b are side and perspective views of a mounting flange for a mechanism attachment of the present invention;

FIG. 5 is a three-dimensional structural view of a mechanism mounting base of the present invention;

FIG. 6 is a schematic view of a fixed mounting flange and a movable push plate;

in the figure: the device comprises a cartridge case 1, a primer 2, a compression bar 3, a movable push plate 4, a fixed assembly flange 5, a fixed bottom plate 6, a push rod 7, a pressure sensor 8, a screw rod mechanism 9, a servo motor 10, a fixed outer plate 11, a limiting mechanism 12, a reset spring 13, a boss 14, a through hole 15 and a cylindrical inner hole 16.

Detailed Description

As shown in fig. 1, the present embodiment relates to a small-caliber ammunition intelligent assembly primer press-fitting mechanism with flexible self-centering function, which comprises: the depression bar 3 and the push rod 7 that set up relatively, from top to bottom set gradually in cartridge case 1, primer 2 and fixed assembly flange 5 between them and set up in the outside a pair of movable push pedal 4 of fixed assembly flange 5 and fixed planking 11, wherein: one end of the cartridge case 1 is sleeved at the tail end of the pressure lever 3, and the other end is arranged in the fixed assembly flange 5.

The fixing assembly flange 5 is made of elastic metal such as: 65Mn, etc., the mounting flange 5 comprises a cage structure at the upper part for positioning the cartridge case and a boss 14 at the lower part, which is provided with a through hole 15 for positioning the primer.

The cage structure is a plurality of small strips with uniform equal width.

As shown in fig. 4, the through hole 15 is coaxial with the upper cylindrical inner hole 16 of the fixed mounting flange.

The upper end and the lower end of the through hole are provided with chamfers, the chamfers at the upper end can play a role in guiding when primer is put in, and the chamfers at the lower end can play a role in guiding when the push rod is installed.

The bottom of the push rod 7 is driven by a screw mechanism 9 with a pressure sensor 8.

The push rod 7 is in clearance fit with the through hole in the fixed assembly flange, and the chamfer at the lower end of the through hole and the through hole also play a role in guiding the push rod.

The push rod 7 is driven by a servo motor, but not limited, and a force sensor is additionally arranged between the push rod and the servo motor for detecting the press-fitting force.

The movable push plate 4 comprises a limiting mechanism 12 arranged at one end and a contact end with a return spring 13 arranged at the other end, and the limiting mechanism is contacted with the fixed outer plate to realize automatic centering when the contact end linked by the return spring 13 is contacted with the fixed assembling flange 5.

The position of the limiting mechanism 12 on the movable push plate 4 is adjustable.

Before the shell case was put into, the activity push pedal was opened, and each small strip evenly opened under self elastic action on fixed mounting flange upper portion to the shell case is put into smoothly, and the back is put into to the shell case, and the action of activity push pedal is tight the small strip on fixed mounting flange upper portion of centering clamp, accomplishes the tight centering function of clamp to the shell case. The small strip subdivided at the upper part of the fixed assembly flange has about 10-wire deformation in the diameter direction in the opening and clamping process, and the deformation can ensure that the cartridge case is smoothly placed into the fixed assembly flange before being centered and clamped.

Compared with the prior art, the automatic assembly device has the advantages that the concentricity and the accurate positioning of the primer and the cartridge case in the automatic assembly primer press-fitting process of the small-caliber ammunition are effectively realized through the cooperative matching of the components, and the pressure sensor arranged on the push rod effectively realizes the controllable and accurate press-fitting force. The invention has simple and reliable structure, high efficiency and strong practicability. The stability of the small-caliber ammunition assembly system and the press-fitting precision of the primer are greatly improved.

The foregoing embodiments may be modified in many different ways by those skilled in the art without departing from the spirit and scope of the invention, which is defined by the appended claims and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Claims

1. The utility model provides a fire pressure equipment mechanism at bottom of small-bore ammunition intelligence assembly with flexible self-centering function which characterized in that includes: the depression bar and the push rod that set up relatively, from top to bottom set gradually in shell case, primer and the fixed mounting flange between them and set up in the outside a pair of movable push pedal of fixed mounting flange and fixed planking, wherein: one end of the cartridge case is sleeved at the tail end of the pressing rod, and the other end of the cartridge case is arranged in the fixed assembly flange.

2. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function according to claim 1, wherein the movable push plate comprises a limiting mechanism arranged at one end and a contact end with a return spring arranged at the other end, and the limiting mechanism is in contact with the fixed outer plate to realize automatic centering when the contact end linked with the return spring is in contact with the fixed assembly flange.

3. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function as claimed in claim 1, wherein the fixing assembly flange is made of elastic metal and comprises a cage structure positioned at the upper part for positioning the cartridge case and a boss positioned at the lower part, and the boss is provided with a through hole for positioning the primer.

4. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function as claimed in claim 3, wherein the cage structure is a plurality of small strips with uniform width.

5. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function according to claim 4, wherein the through hole is coaxial with the cylindrical inner hole at the upper part of the fixed assembly flange.

6. The intelligent assembling primer press-fitting mechanism for small-caliber ammunition with the flexible self-centering function according to claim 3, wherein chamfers are arranged at the upper end and the lower end of the through hole, the upper chamfer can play a role in guiding when a primer is put in, and the lower chamfer can play a role in guiding when a push rod is installed.

7. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function as claimed in claim 1, wherein the bottom of the push rod is driven by a screw mechanism with a pressure sensor.

8. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function as claimed in claim 1, wherein the push rod is in clearance fit with the through hole in the fixed assembly flange, and the lower end chamfer of the through hole and the through hole also play a role in guiding the push rod.

9. The small-caliber ammunition intelligent assembly primer press-fitting mechanism with the flexible self-centering function according to claim 1, wherein the position of the limiting mechanism on the movable push plate is adjustable.