CN-224209041-U - Die scraping device

Abstract

The utility model discloses a die scraping device which is applied to a cold header, wherein the cold header comprises a cold header bottom module and a clamp module, and is characterized in that the cold header bottom module is fixedly provided with the die scraping device, the die scraping device comprises a bracket with a mounting hole, a torsion spring fixing piece used for sleeving a torsion spring is arranged on the bracket, a scraping piece close to a die opening of the clamp module is rotatably fixed on the torsion spring fixing piece, a first positioning pin is arranged on the bracket, a second positioning pin is arranged on the scraping piece, and the torsion spring is fixedly mounted with the second positioning pin through the first positioning pin. Through add on the cold header and scrape mould device, leave impurity such as burr on the die orifice of clamp module, when whole clamp module removed, scrape impurity such as burr can be scraped to the doctor-bar of mould device to can guarantee the roughness and the outward appearance of product, improve the yields.

Inventors

• CHEN JIANLIN
• WU XUHUI
• CHEN JIAHUI

Assignees

• 思进智能成形装备股份有限公司

Dates

Publication Date

20260508

Application Date

20250521

Claims (5)

1. 1. The die scraping device is applied to a cold header, the cold header comprises a cold header bottom module (1) and a clamp module (2), and is characterized in that the cold header bottom module (1) is fixedly provided with a die scraping device, the die scraping device comprises a support (4) with a mounting hole (3), a torsion spring fixing piece (6) used for sleeving a torsion spring (5) is arranged on the support (4), a scraping piece (8) close to a die opening (7) of the clamp module (2) is rotatably fixed on the torsion spring fixing piece (6), a first locating pin (9) is arranged on the support (4), a second locating pin (10) is arranged on the scraping piece (8), and the torsion spring (5) is fixedly installed through the first locating pin (9) and the second locating pin (10).
2. 2. The doctor blade apparatus as claimed in claim 1, wherein the torsion spring holder (6) is a flat-headed perforated pin.
3. 3. The doctor blade apparatus as claimed in claim 1, wherein the torsion spring fixing member (6) is a stepped bolt.
4. 4. A doctor blade device according to claim 1, characterized in that the doctor blade (8) is L-shaped.
5. 5. The die scraping device as claimed in claim 1, wherein the die scraping device is arranged on a clamping plate (11) of the cold heading bottom module (1), and the scraping blade (8) of the die scraping device is positioned opposite to a die opening (7) of the last clamp on the clamping module (2).

Description

Die scraping device Technical Field The utility model relates to the technical field of manufacturing of cold heading forming machines, in particular to a die scraping device. Background The cold heading forming machine is forging forming equipment for thickening the top of a bar or a coiled material at room temperature, and is special equipment mainly used for mass production of fasteners such as nut bolts and the like. The working principle of the cold heading machine is that the belt wheel or the gear transmits power, the crank connecting rod, the sliding table mechanism and the like perform linear reciprocating motion, and the blank of the machined part is subjected to plastic deformation or separation by utilizing the mutual motion of the cold heading bottom module, the clamp module and the like. Taking a six-station cold header (six-die six-punch cold header) on the market as an example, 6 workpiece processing flows are usually corresponding, each station is responsible for different forming processes (such as blanking, heading, punching and the like), the workpieces are sequentially transferred by a clamp module in a die-by-die mode, each station corresponds to one processing step, and finally 1 finished workpiece is produced. The six-station cold header comprises six cold header stations which are arranged side by side left and right, each cold header station corresponds to one clamp and one bottom die, if the first cold header station corresponds to the first clamp and the first bottom die, the second cold header station corresponds to the second clamp and the second bottom die, the third cold header station corresponds to the third clamp and the third bottom die, the fourth cold header station corresponds to the fourth clamp and the fourth bottom die, the fifth cold header station corresponds to the fifth clamp and the fifth bottom die, and the sixth cold header station corresponds to the sixth clamp and the sixth bottom die. In addition, it generally adds additional auxiliary clamps, such as a "six-station seven-handle clamp" design, for product transfer. The cold upsetting bottom module and the male die or the female die in the clamp module are subjected to multiple upsetting forming, and impurities such as burrs remain at the end part of a die orifice after the male die and the female die punch blanks to be subjected to cold upsetting during cold extrusion of products, wherein the impurities such as burrs are formed by impact during cold upsetting. Particularly, after upsetting the sixth cold upsetting station and the sixth clamp, which belong to the finish machining station, products are formed finally, if impurities such as burrs and the like remain on the clamps, the impurities can be forged and pressed on the surfaces of the products, the surface roughness and the appearance of the products are affected, and the yield is reduced. Disclosure of Invention The present utility model is directed to a die scraping device, which solves the above-mentioned problems in the prior art. In order to solve the technical problems, the die scraping device is applied to a cold header, and the cold header comprises a cold header bottom module and a clamp module and is characterized in that the cold header bottom module is fixedly provided with the die scraping device, the die scraping device comprises a bracket with a mounting hole, a torsion spring fixing piece used for sleeving a torsion spring is arranged on the bracket, a scraping blade close to a die opening of the clamp module is rotatably fixed on the torsion spring fixing piece, a first positioning pin is arranged on the bracket, a second positioning pin is arranged on the scraping blade, and the torsion spring is fixedly mounted through the first positioning pin and the second positioning pin. Compared with the prior art, the cold header has the advantages that the scraping die device is additionally arranged on the cold header, when impurities such as burrs are left on the die orifice of the clamp module, and the whole clamp module moves, the scraping blade of the scraping die device can scrape the impurities such as the burrs, so that the surface roughness and the appearance of a product can be ensured, and the yield is improved. As an improvement of the utility model, the torsional spring fixing piece is a flat head belt hole pin shaft. The design is selected to be used for the purpose that the torsion spring is provided with the optical rod-shaped pin, the torsion spring is supported, the front end of the pin is provided with an opening pin for fixing the whole pin shaft, and the rear end of the pin is provided with a pin cover, so that the torsion spring dislocation is limited. As an improvement of the utility model, the torsion spring fixing piece is a step bolt. The design is selected for another implementation mode of the torsion spring fixing piece, the middle section of the step bolt is a step cylinder of a polished rod and is used for sle