US-12617059-B2 - Spray head device and sandblasting device for automobile part processing

US12617059B2US 12617059 B2US12617059 B2US 12617059B2US-12617059-B2

Abstract

The present disclosure relates to the technical field of automobile part processing, and specifically provides a spray head device and a sandblasting device for automobile part processing. The spray head device comprises a spray head body and a connecting pipe. A conical through hole is penetratingly arranged in the spray head body, one end of the conical through hole forms a discharge port, the other end of the conical through hole forms a feed port, the caliber of the feed port is greater than that of the discharge port, the connecting pipe is fixedly connected to one end of the feed port of the spray head body, and the connecting pipe is coaxially arranged with the conical through hole; the conical through hole is penetratingly provided in the spray head body.

Inventors

Jingwei NING
Wen Liu
Hongwei Cui
Kai Lin
Xiang Yan
Hang Wang
Zhiwen GUO
Chi Zhang
Pengfei Liu

Assignees

ZHEJIANG WANLI UNIVERSITY

Dates

Publication Date: 20260505
Application Date: 20221020
Priority Date: 20220707

Claims (8)

1 . A sandblasting device for automobile part processing, comprising: a sand cylinder ( 3 ), a feeding pipeline ( 4 ), and a spray head device comprising: a spray head body ( 1 ) and a connecting pipe ( 2 ), wherein a conical through hole ( 11 ) is penetratingly arranged in the spray head body ( 1 ), one end of the conical through hole ( 11 ) forms a discharge port ( 12 ), and the other end of the conical through hole ( 11 ) forms a feed port ( 13 ); a caliber of the feed port ( 13 ) is greater than that of the discharge port ( 12 ), the connecting pipe ( 2 ) is fixedly connected to the feed port ( 13 ) of the spray head body ( 1 ), the connecting pipe ( 2 ) is arranged coaxially with the conical through hole ( 11 ), and the caliber of the connecting pipe ( 2 ) is adapted to that of the feeding port ( 13 ); multiple spiral trunkings ( 14 ) are arranged at intervals on an inner wall of the conical through hole ( 11 ), the spiral trunkings ( 14 ) extend from one end of the feeding port ( 13 ) to one end of the discharging port ( 12 ), and two ends of the spiral trunkings ( 14 ) are arranged to be through the spray head body ( 1 ); and multiple injection pipes ( 15 ) are evenly spaced along a circumferential direction of a side wall of the connecting pipe ( 2 ), and the injection pipes ( 15 ) communicate with the connecting pipe ( 2 ); wherein one end of the feeding pipeline ( 4 ) is connected to the sand cylinder ( 3 ), and the other end of the feeding pipeline ( 4 ) is connected to the connecting pipe ( 2 ) of the spray head device, and microtextures ( 5 ) are provided at intervals on the inner wall of the feeding pipeline ( 4 ).
2 . The sandblasting device for automobile part processing according to claim 1 , wherein the feeding pipeline ( 4 ) comprises a main pipe ( 41 ), a branch pipe ( 42 ), and a branch joint ( 43 ), one end of the main pipe ( 41 ) being in communication with a plurality of the branch pipes ( 42 ) via the branch joint ( 43 ), and the spray head device being provided at a tail end of the branch pipe ( 42 ); and the microtexture ( 5 ) is arranged on the inner wall of the branch joint ( 43 ).
3 . The sandblasting device for automobile part processing according to claim 2 , further comprising a jig ( 8 ) for holding an automobile part, wherein the jig comprises multiple jigs ( 8 ), and each of the multiple jigs ( 8 ) are respectively provided toward the spray head device.
4 . The sandblasting device for automobile part processing according to claim 3 , further comprising a box body ( 9 ) having a top cover ( 90 ) at an upper end of the box body ( 9 ), wherein the sand cylinder ( 3 ) is mounted to the upper end of the top cover ( 90 ), the main pipe ( 41 ) penetrates through the top cover ( 90 ) and is used to extend to an interior of the box body ( 9 ), and multiple jigs ( 8 ) are provided inside the box body ( 9 ) and are respectively provided toward the spray head device.
5 . The sandblasting device for automobile part processing according to claim 1 , further comprising an air compressor apparatus ( 6 ) and a breathing line ( 7 ), wherein the air compressor apparatus ( 6 ) communicates with the connecting pipe ( 2 ) of the spray head device via the breathing line ( 7 ).
6 . The sandblasting device for automobile part processing according to claim 5 , wherein the breathing line ( 7 ) comprises a main breather pipe ( 71 ), a distributor ( 72 ), and a branch breather pipe ( 73 ), one end of the main breather pipe ( 71 ) being connected to the air compressor apparatus ( 6 ), the other end of the main breather pipe ( 71 ) being in communication with a plurality of the branch breather pipes ( 73 ) via the distributor ( 72 ), and the tail end of the branch breather pipe ( 73 ) being in communication with the injection pipe ( 15 ) of the spray head device.
7 . The sandblasting device of claim 1 , wherein the spiral trunking ( 14 ) extends in the form of a conical helix.
8 . The sandblasting device of claim 1 , wherein the side wall of the pipe ( 2 ) is provided with the plurality of mounting blocks ( 16 ) at even intervals along its circumferential direction, a communication hole ( 17 ) is penetratingly provided in each of the mounting blocks ( 16 ), one end of each communication hole ( 17 ) penetrates through the side wall of the connecting pipe ( 2 ) to communicate with the connecting pipe ( 2 ), and the mounting block ( 16 ) communicates with its respective injection pipe ( 15 ) through its respective communication hole ( 17 ); and one end of each injection pipe ( 15 ) away from the connecting pipe ( 2 ) is used for connecting with the air compressor apparatus ( 6 ).

Description

CROSS-REFERENCE TO RELATED APPLICATION This application claims priority from the Chinese patent application 202210802228.7 filed Jul. 7, 2022, the content of which is incorporated herein in the entirety by reference. TECHNICAL FIELD The present disclosure relates to the technical field of automobile part processing, and more particularly to a spray head device and a sandblasting device for automobile part processing. BACKGROUND ART The existing automobile parts need to be treated with sandblasting and coating after processing. The surface of a workpiece is cleaned and roughened by the impact of high-speed sand flow. The compressed air is used as power to form a high-speed injection beam to inject the spraying material at high speed onto the surface of the workpiece to be treated. Due to the impact and cutting action of the spraying material on the surface of the workpiece, the surface of the workpiece gets a certain degree of cleanliness and different roughnesses so that the mechanical properties of the surface of the workpiece are improved, thereby improving the fatigue resistance of the workpiece, increasing the adhesion, and facilitating the leveling and decoration of the coating in the next step. At present, a sandblasting operation for an automobile part is generally performed by fixing the automobile part by a jig in a sandblasting chamber, and then performing the sandblasting operation on the automobile part by using a sandblasting device. In the process of sandblasting automobile parts, the high-speed injection beam injects the spraying material onto the surface of the workpiece to be treated at high speed. However, the spraying material is scattered when the spraying material is sprayed out of the spray head, which results in an unsatisfactory sandblasting effect and can not fully meet the users' requirements. SUMMARY The present disclosure aims to solve at least one aspect of the above-mentioned technical problems. In order to solve the above-mentioned problems, the present disclosure proposes the following technical solution: a spray head device, comprising a spray head body and a connecting pipe, wherein a conical through hole is penetratingly arranged in the spray head body, one end of the conical through hole forms a discharge port, and the other end of the conical through hole forms a feed port; a caliber of the feed port is greater than that of the discharge port, the connecting pipe is fixedly connected to the feed port of the spray head body, the connecting pipe is arranged coaxially with the conical through hole, and the caliber of the connecting pipe is adapted to that of the feeding port;multiple spiral trunkings are arranged at intervals on an inner wall of the conical through hole, the spiral trunkings extend from one end of the feeding port to one end of the discharging port, and two ends of the spiral trunkings are arranged to be through the spray head body;the side wall of the connecting pipe is provided with a plurality of injection pipes at regular intervals in its circumferential direction, the injection pipes communicating with the connecting pipe. Compared with the prior art, an automatic sandblasting device for automobile parts provided by the present disclosure has but is not limited to the following beneficial effects. A conical through hole is penetratingly provided in the spray head body, and the spraying material enters the conical through hole from the feeding port via the connecting pipe, and is then ejected from the discharging port; since the caliber of the conical through hole becomes gradually smaller, the spraying material will accelerate, and the dispersion of the ejected spraying material can be reduced; the arrangement of the spiral trunking enables the ejected spraying material to rotate around the spiral trunking, so as to increase the ejecting speed of the spraying material, improve the impact force, and enhance the exploitative effect; two ends of the spiral trunking are arranged to be through the spray head body, so as to facilitate spraying material being ejected out to the automobile parts through the spiral trunking; multiple injection pipes are evenly spaced on the side wall of the connecting pipe, and this structure enables the airflow to flow into the conical through hole to be evenly distributed, thereby facilitating the spraying material ejected by the airflow more uniform, so as to improve the spraying effect. Preferably, the spiral trunking extends in the form of a conical helix. Preferably, the side wall of the connecting pipe is provided with a plurality of mounting blocks at uniform intervals along its circumferential direction, a communication hole is provided through the mounting block, one end of the communication hole penetrates through the side wall of the connecting pipe to communicate with the connecting pipe, and the mounting block communicates with the injection pipe via the communication hole; one end of the injection pipe away from