CN210967315U

CN210967315U - Core rod floating mechanism

Info

Publication number: CN210967315U
Application number: CN201921160489.3U
Authority: CN
Inventors: 吕京翔; 袁天宇; 王瑶; 查光成; 李振红
Original assignee: Nanjing Kangni Precision Mechanics Co ltd
Current assignee: Nanjing Kangni Precision Mechanics Co ltd
Priority date: 2019-07-23
Filing date: 2019-07-23
Publication date: 2020-07-10
Anticipated expiration: 2029-07-23

Abstract

The utility model discloses a core bar flotation mechanism, its core bar bed hedgehopping piece is fixed in on the lower bolster through axle position bolt, and the rectangle spring sets up under the core bar bed hedgehopping piece and is located the lower bolster, and the core bar cover is established at the end department of splining the core bar, and on the core bar cover was fixed in the core bar bed hedgehopping piece, flotation ring cover was equipped with the splining on the core bar, flotation bar's one end and flotation ring were connected, and the other end stretches into core bar cover and core bar bed hedgehopping piece and rectangle spring contact. In the process of replacing the rotation stopping core rod, the mechanism only needs to remove the cutter firstly, then the inner hexagonal wrench goes deep into the core rod heightening block, the rotation stopping core rod, the floating ring and the core rod sleeve can be pulled out together by loosening 3 shaft position screws, and the installation is not completed. The whole process only needs to dismantle the cutter and does not need to dismantle the die carrier and the transmission structure thereof, and the dismounting is time-saving and labor-saving. The floating ring can give consideration to the functions of floating and ejecting in the using process, so that the forging production is more automatic and stable; the whole mechanism is compact, and the strength and the function are both considered in a small space.

Description

Core rod floating mechanism

Technical Field

The utility model belongs to the technical field of the supplementary cutting of cold forming die carrier, especially, relate to a core rod flotation mechanism.

Background

At present, all multi-station cold forming dies are mainly used for forming, and when burrs which are difficult to avoid are generated in the forming process of a workpiece, the burrs are almost cut and removed by machining equipment such as a lathe. This traditional approach is inefficient and does not meet the production cycle time of the press. Therefore, the die carrier module needs to be improved, and the motor, the transmission mechanism and the positioning mechanism are integrated in the space range of the four guide posts and the guide sleeves of the die carrier, so that the function of removing burrs by cutting is achieved. Because the mechanism needs to have the conditions of automatic production, when the mechanical arm sends the workpiece in, the effect of supporting and floating and positioning is needed, the workpiece needs to be dragged out of the machining tool before being moved out, and the mechanism is compatible with the problem that the reserved position is narrow. Meanwhile, different product types need to be dealt with during forging production, the problem that the core rod is frequently replaced exists, and if the transmission part is frequently disassembled, the transmission mechanism is damaged and deformed. Therefore, a quick-release core rod floating mechanism applicable to narrow space is needed.

Disclosure of Invention

In order to solve the existing problems, a core rod floating mechanism is provided, and comprises a lower template, an upper template, a rotation stopping core rod, a cutter and a rotation stopping pressing block; the rotation stopping pressing block is arranged on the upper template, and the cutter is sleeved on the outer ring of the rotation stopping core rod; the method is characterized in that: the core rod raising block, the rectangular spring core rod sleeve and the floating rod are also included;

the core bar block is fixed on the lower template, the rectangular spring is arranged below the core bar block and positioned in the lower template, the core bar sleeve is sleeved at the lower end of the rotation-stopping core bar, the core bar sleeve is fixed on the core bar block, the floating ring is sleeved on the rotation-stopping core bar,

one end of the floating rod is connected with the floating ring, and the other end of the floating rod extends into the core rod sleeve and the core rod heightening block to be contacted with the rectangular spring.

Furthermore, the spring support also comprises spring gaskets which are fixed at the upper end and the lower end of the rectangular spring. The spring gasket is used for enabling the elasticity of the spring to be uniformly distributed and ensuring that the floating ring ascends or descends stably.

Furthermore, the floating ring is of a tubular structure, and one end of the floating ring is provided with an annular material supporting ring; an internal spline is arranged inside the floating ring, an external spline is arranged on the outer wall of the rotation stopping core rod, and the internal spline and the external spline are connected through a spline. The spline connection avoids the relative displacement between the floating ring and the rotation stopping core rod, and the influence on the processing quality of products is avoided.

Furthermore, a protruding rotation stopping block is arranged on an external spline at one end of the rotation stopping core rod, the end of the rotation stopping core rod is arranged in a core rod sleeve, and the core rod sleeve is matched with the core rod sleeve. The end of the rotation stopping core rod is in a flower shape. The inside of the core rod sleeve is provided with a corresponding flower-shaped clamping groove. The clamping groove is clamped with the rotation stopping core rod to realize the rotation stopping function.

Further, the core rod sleeve is fixed with the core rod heightening block through three axial position screws; the core rod block is fixed on the lower template through an axial screw. The quick-release function is realized by the structure, and the core rod sleeve, the rotation stopping core rod and the floating ring can be simultaneously taken out from the die only by screwing the screws of the three axial positions. When the core rod sleeve is installed, the core rod sleeve is fixed on the core rod block by using the shaft position screw.

The utility model discloses an implementation process does:

1, a manipulator puts a workpiece into a rotation stopping core rod for positioning, the workpiece is supported by a floating ring to play the upper limit of a spring, and the workpiece is not contacted with a cutter;

2 the rotation stopping pressing block is pressed down under the operation of the upper die, and the rotation stopping pressing block contacts with the workpiece to play a role in assisting rotation stopping. Pressing down the workpiece and the floating ring together, sliding the rotation stopping core rod in the special-shaped inner cavity of the workpiece, and contacting the workpiece and the cutter to form a cutting process;

3, after cutting, lifting the rotation stopping pressing block, separating the rotation stopping pressing block from the workpiece, supporting the workpiece to be separated from the blade under the action of the floating ring, and finishing cutting;

and 4, carrying to the next station by a manipulator.

Has the advantages that:

the inner hexagonal wrench is inserted into the core rod part only after the cutter is removed, and the core rod, the floating ring and the core rod sleeve can be taken out together by loosening 3 axial screws. And the installation is vice versa. The main structure does not need to be disassembled in the whole process, and the disassembly and the assembly are trouble-saving and labor-saving. The floating ring can give consideration to the functions of floating and ejection; the whole mechanism is compact, and the strength and the function are both considered in a small space.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic structural view of the rotation stopping core rod, the core rod sleeve and the floating ring of the present invention when taken out;

fig. 3 is a top view of the present invention;

fig. 4 is a schematic structural diagram of the rotation stopping core rod and the floating ring.

Reference numerals

1-lower template, 3-rotation stopping core rod, 4-cutter 5-rotation stopping pressing block, 6-core rod raising block, 7-rectangular spring, 8-core rod sleeve, 9-floating ring, 10-floating rod, 71-spring gasket, 91-supporting ring and 31-rotation stopping block.

Detailed Description

The core rod floating mechanism comprises a pressing part fixed on an upper template 2, namely a rotation stopping pressing block 5 shown in figure 1. The structure of the rotation stopping pressing block 5 is matched with the structure at the upper end of the rotation stopping core rod 3. In this embodiment, the outer surface of the rotation stopping core rod 3 is provided with an external spline, and the rotation stopping pressing block 5 and the upper end of the rotation stopping core rod 3 are connected by the spline to prevent the rotation of the upper end of the rotation stopping core rod 3.

The cutter 4 is in a cylinder cone shape, and the rotation stopping core rod 3 is arranged on the central shaft of the cutter. The floating ring 9 comprises a tubular floating pipe and an annular fixing plate which are integrally formed. The float pipe is connected with the spline of the rotation stopping core rod 3. The bottom external spline of the rotation stopping core rod 3 is provided with a rotation stopping block 31 protruding to the periphery, the rotation stopping core rod 3 extends into the rotation stopping core rod 3 sleeve, and the internal structure of the core rod sleeve 8 is matched with the bottom structure of the rotation stopping core rod 3.

The section of the core rod heightening block 6 is in an inverted U shape. The core rod sleeve 8 is fixed at the upper end of the core rod block 6 through a shaft bolt. The rectangular spring 7 is arranged in the U-shaped groove of the core rod block 6, and the rectangular spring 7 is simultaneously positioned in the lower template 1. Spring washers 71 are provided at both upper and lower ends of the rectangular spring 7. The core rod heightening block 6 is fixed on the lower template 1 through an axial screw.

The number of the floating rods 10 is three. The upper end of the lower end of the upper end of the rectangular spring 7 is propped against the fixed plate, and the lower end of the upper end of the lower end of the upper.

In the embodiment, the core rod, the floating ring 9 and the core rod sleeve 8 can be taken out together by only removing the cutter 4 and then inserting the socket head wrench into the core rod part and loosening 3 shaft position screws, as shown in fig. 3. The utility model provides a core bar cover 8 includes an intermediate ring, 3 retainer rings of center ring edge distribution. The shaft bolt is arranged in the fixed ring. And the installation is vice versa. The main structure does not need to be disassembled in the whole process, and the disassembly and the assembly are trouble-saving and labor-saving. The floating ring 9 can give consideration to the functions of floating and ejecting; the whole mechanism is compact, and the strength and the function are both considered in a small space.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. A core rod floating mechanism comprises a lower template (1), an upper template, a rotation stopping core rod (3), a cutter (4) and a rotation stopping pressing block (5); the rotation stopping pressing block (5) is arranged on the upper template, and the cutter (4) is sleeved on the outer ring of the rotation stopping core rod (3); the method is characterized in that: the floating material device also comprises a core rod heightening block (6), a rectangular spring (7), a core rod sleeve (8), a floating material ring (9) and a floating material rod (10);

the core rod block (6) is fixed on the lower template (1), the rectangular spring (7) is arranged below the core rod block (6) and positioned in the lower template (1), the core rod sleeve (8) is sleeved at the lower end of the rotation-stopping core rod (3), the core rod sleeve (8) is fixed on the core rod block (6), the floating ring (9) is sleeved on the rotation-stopping core rod (3),

one end of the floating rod (10) is connected with the floating ring (9), and the other end of the floating rod extends into the core rod sleeve (8) and the core rod heightening block (6) to be contacted with the rectangular spring (7).

2. The core bar buoyant apparatus of claim 1, wherein: and the spring washer (71) is fixed at the upper end and the lower end of the rectangular spring (7).

3. The core bar buoyant apparatus of claim 1, wherein: the floating ring (9) is of a tubular structure, and one end of the floating ring is provided with an annular material supporting ring (91); the floating ring (9) is internally in a spline structure, the outer wall of the rotation stopping core rod (3) is in an outer spline structure, and the floating ring and the rotation stopping core rod are in spline connection.

4. The core bar buoyant apparatus of claim 1, wherein: the external spline at one end of the rotation stopping core rod (3) is provided with a convex rotation stopping block (31), the end is arranged in the core rod sleeve (8), and the core rod sleeve (8) is matched with the core rod sleeve.

5. The core bar buoyant apparatus of claim 1, wherein: the core rod sleeve (8) is fixed with the core rod heightening block (6) through three axial position screws; the core rod block (6) is fixed on the lower template (1) through an axial screw.