CN108723271B

CN108723271B - Synchronous trimming and punching method and mould for small-size parts comprising polygonal substrate

Info

Publication number: CN108723271B
Application number: CN201810421453.XA
Authority: CN
Inventors: 陈献生
Original assignee: Foshan Shunde Zhaobai Electric Appliance Co ltd
Current assignee: Foshan Shunde Zhaobai Electric Appliance Co ltd
Priority date: 2018-05-04
Filing date: 2018-05-04
Publication date: 2024-04-19
Anticipated expiration: 2038-05-04
Also published as: CN108723271A

Abstract

The utility model provides a synchronous side cut punching method and mould of small-size part that contains polygon base plate, this mould includes master mould and die, master mould and die all include the mould shell, the die head, mould core and connect the material stick, the master mould still includes a plurality of sticks and a plurality of push rod that punch, be provided with first gasket from master mould mold core to master mould rear end in order, second gasket and first spring, the front end of stick that punches is protruding from the preceding terminal surface of master mould mold core, the rear end passes first gasket butt on the second gasket, the front end butt of push rod passes second gasket and first spring cooperation at first gasket, punch and first gasket between set up first limit structure, set up second limit structure between push rod and the second gasket. According to the method, the die is adopted, and in one stamping motion of the die, the die core of the die is matched with the die core of the main die to finish blank trimming, and meanwhile, the punching rod is used for punching the blank. The die can reduce processing cost and improve production efficiency.

Description

Synchronous trimming and punching method and mould for small-size parts comprising polygonal substrate

Technical Field

The invention relates to a die on a horizontal continuous cold forging part machine, in particular to a cold forging processing die and a method capable of realizing synchronous trimming and punching of small-size parts with polygonal base plates.

Background

Conventional cold forging dies can only cut edges, and additional punching of non-main axes cannot be completed in one die. When a part with holes on a substrate is processed, the holes on the substrate are processed through a milling machine after the process of cutting off the edge of the substrate by cold forging, and the processing method has low efficiency and high processing cost, and the blank is clamped for multiple times, so that the product error is large and the product consistency is poor.

The small-size part containing the polygonal substrate has very high precision requirement due to small size, the error needs to be controlled to be several filaments, and the product requirement is difficult to meet by adopting the processing method.

Disclosure of Invention

The invention aims to provide a synchronous trimming and punching method and a mould for small-size parts with polygonal substrates, so as to reduce the processing cost of the small-size parts with polygonal substrates, improve the processing efficiency and ensure the precision and consistency of products.

In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:

A cold forging die for achieving synchronous trimming and punching of small-sized parts including polygonal base plates, the cold forging die comprising a main die (300) and a die (100), both comprising a form, a die head, a die core and a receiving bar, wherein: the main die (300) further comprises a plurality of punching rods (304) and a plurality of pushing rods (306), a first gasket (305), a second gasket (307) and a first spring (309) are sequentially arranged from the main die core (302) to the rear end (312) of the main die (300) in the main die, the front ends of the punching rods protrude from the front end face of the main die core, the rear ends penetrate through the first gasket to be abutted to the second gasket, the front ends of the pushing rods are abutted to the first gasket, the rear ends of the pushing rods penetrate through the second gasket to be matched with the first spring, a first limiting structure is arranged between the punching rods and the first gasket, and a second limiting structure is arranged between the pushing rods and the second gasket.

Preferably, the first limiting structure comprises a first round table (304') arranged at the rear end of the punching rod (304).

Preferably, the second limiting structure comprises a second round table (306') arranged on the outer wall of the rear end of the pushing rod (306).

A method for synchronously trimming and punching a small-sized part comprising a polygonal substrate, the method comprising the step of adopting the cold forging processing die; in one punching motion of the punching die, the die core of the punching die is matched with the die core of the main die to finish blank trimming, and the punching rod punches holes on the blank.

Compared with the prior art, the invention has at least the following beneficial effects:

The trimming and punching are completed in the same die, so that the precision and consistency of small-size parts can be met. Because the cold forging trimming and the punching are synchronously completed in the same die, the subsequent process of independently processing holes is saved, thereby reducing the processing cost and improving the production efficiency.

Drawings

FIG. 1 is a block diagram of a small-sized part including a polygonal substrate;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is a block diagram of a blank with broken lines showing the trim locations;

FIG. 4 is a cross-sectional view B-B of FIG. 3;

FIG. 5 is a schematic view showing a structure of a cold forging die according to an embodiment;

FIG. 6 is a schematic view of the structure of one end of the die head of the master die;

FIG. 7 is a schematic view of the structure of a first shim in a master mold;

FIG. 8 is a schematic diagram of the structure of a second shim in the master mold;

FIG. 9 is a schematic view showing a state after the jigs convey the blanks to the mold;

FIG. 10 is a schematic view of the receiving rod after clamping the blank;

FIG. 11 is a schematic view showing a state after the die and the main die are clamped;

Fig. 12 is a schematic view showing a state after the cold forging is completed with the die and the main die opened.

Detailed Description

The invention is further described below with reference to the drawings and examples.

A structure of a small-sized part 210 including a polygonal substrate, which is used as an electrode post of a battery, is shown in fig. 1 and 2. The small-sized part 210 includes a polygonal base plate 212 and a stepped cylinder 213, and the base plate 212 has two blind holes 211. It should be noted that the small-sized parts including the polygonal substrate described in the present invention are not limited to the parts shown in fig. 1 and 2, but generally refer to various small-sized parts having polygonal substrates (including but not limited to quadrangular, hexagonal, octagonal, etc.) with holes formed thereon.

The structure of the blank 200 prior to simultaneous trimming and punching is shown in fig. 3 and 4. For convenience of comparison of the states before and after trimming, the trimming position is shown by a broken line in fig. 3. Wherein two lugs 221 are symmetrically arranged at two opposite edges of the substrate and are used for matching with a clamp, so that the blank 200 is better clamped in the clamp to realize the conveying and accurate positioning of the blank 200.

Fig. 5 shows a structure of a cold forging die capable of simultaneously trimming and punching the blank 200 to obtain the small-sized part 210 having the polygonal base plate, that is, for achieving the simultaneous trimming and punching of the small-sized part having the polygonal base plate.

Referring to fig. 5, the cold forging die of the present embodiment includes a main die 300 and a die 100. The cold forging processing die is used for a horizontal continuous cold forging part machine. The figure shows a top view.

Wherein, the die 100 comprises: the die form (not shown), the die head 104, the die core 103 and the die receiving bar 101 are identical to those of the conventional die. Further, a pit 102 is provided at an end of the die core 102.

Referring to fig. 5 and 6, the master mold 300 includes: the main die shell 311, the main die head 303, the main die core 302 and the main die receiving bar 301 are the same as those of the existing die. In addition, the main die 300 further includes a plurality of punching bars 304 and a plurality of pushing bars 306, a first spacer 305, a second spacer 307 and a first spring 309 are sequentially disposed from the main die core 302 to the main die rear end 312 in the mold shell 311 of the main die 300, front ends of the plurality of punching bars 304 protrude from a front end surface of the main die core 302, rear ends of the plurality of punching bars 304 are abutted against the second spacer 307 through the first spacer 305, front ends of the plurality of pushing bars 306 are abutted against the first spacer 305, rear ends of the plurality of pushing bars 306 are matched with the first spring 309 through the second spacer 307, a first limiting structure is disposed between the punching bars 304 and the first spacer 305, and a second limiting structure is disposed between the pushing bars 306 and the second spacer 307.

The first limiting structure includes a first circular table 304' disposed at the rear end of the punching rod 304. The second limiting structure comprises a second round table 306' arranged at the rear end of the push rod 306. The first limiting structure and the second limiting structure are not limited to the circular truncated cone, and may be a quadrangular prism, a polygonal prism, or a plurality of protruding portions protruding from the outer wall of the rear end of the punching rod 304 and the outer wall of the rear end of the pushing rod 306. In fig. 5, 308 is a push plate and 310 is a sleeve.

The structure of the first gasket 305 shown in fig. 7. Wherein 313 is a via hole matching with the receiving rod 301, 314 is a blind hole matching with the pushing rod 306, and 315 is a through hole matching with the punching rod 304.

The structure of the second spacer 307 is shown in fig. 8. Wherein 316 is a via hole matching with the receiving bar 301, 317 is a through hole matching with the pushing bar 306.

The operation thereof is described below with reference to fig. 9 to 12.

First, when the die 100 and the master 300 are in the open state, as shown in fig. 9, the jig conveys the blank 200 between the die 100 and the master 300 and is kept in this state.

Next, the die 100 moves toward the master mold 300, and when the die receiving bar 101 contacts the blank 200, the blank 200 is held in place by the cooperation of the die receiving bar 101 and the master receiving bar 301, as shown in fig. 10, at which time the clamp is disengaged from the blank 200, so that the die 100 continues to move toward the master mold 300 to complete the mold clamping and forging.

The die 100 continues to move into engagement with the master die 300 as shown in fig. 11. In this process, the two receiving bars 101 and 301 are retracted after being pressed, and the die core 103 pushes the blank 200 into the main die core 302 to finish trimming the blank 200, wherein 220 denotes a rim charge cut from the blank 200. In this process, the punch bar 304 acts on the polygonal substrate of the blank to create the blind holes 211 in the substrate.

Finally, die 100 is retracted as shown in fig. 12. In this process, the die receiving bar 101 is reset by the urging of its reset spring (not shown). Meanwhile, the main die core 302, the punching bar 304, the first gasket 305, the second gasket 307, etc. are restored under the action of the first spring 309, and the main die receiving bar 301 is restored under the urging of its restoring spring (not shown), so that the manufactured small-sized part 210 is ejected from the die core. Thus, the synchronous trimming and punching of the blank 200 is completed.

With the cold forging die, the die core of the die is matched with the die core of the main die to finish trimming the blank 200 in one stamping motion of the die 100, and the punching rod 304 performs punching on the blank. Because trimming and punching are completed in the same die, the blank is not required to be clamped again for processing holes, errors caused by clamping the blank again can be avoided, and therefore the precision and consistency of small-size parts can be met. Because the cold forging trimming and the punching are synchronously completed in the same die, the subsequent process of independently processing holes is saved, thereby reducing the processing cost and improving the production efficiency.

The foregoing detailed description of the invention has been provided by way of example only to assist those skilled in the art in understanding the invention and is not to be construed as limiting the scope of the invention. Various modifications, equivalent changes, etc. which are made by those skilled in the art to the above-described embodiments under the inventive concept should be included in the scope of the present invention.

Claims

1. The utility model provides a cold forging process die for realize the synchronous side cut punching of the small-size part that contains polygonal base plate, cold forging process die includes master mould (300) and die (100), master mould and die all include mould shell, die head, mold core and connect the material stick, its characterized in that:

The main die (300) further comprises a plurality of punching rods (304) and a plurality of pushing rods (306), a first gasket (305), a second gasket (307) and a first spring (309) are sequentially arranged from the main die core (302) to the rear end (312) of the main die in the main die (300), the front ends of the punching rods protrude from the front end face of the main die core, the rear ends of the punching rods penetrate through the first gasket to be abutted against the second gasket, the front ends of the pushing rods are abutted against the first gasket, the rear ends of the pushing rods penetrate through the second gasket to be matched with the first spring, a first limiting structure is arranged between the punching rods and the first gasket, a second limiting structure is arranged between the pushing rods and the second gasket, the first limiting structure comprises a first round table (304 ') arranged at the rear end of the punching rods (304), and the second limiting structure comprises a second round table (306 ') arranged at the rear end of the pushing rods (306 ').

2. A method for simultaneous trimming and punching of small-sized parts comprising polygonal substrates, characterized in that the method comprises using the cold forging die of claim 1; and the punching rod completes punching on the blank while the die core of the punching die is matched with the die core of the main die to complete trimming of the blank.