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一種陶瓷胚體壓制裝置的制作方法

文檔序號:39614198發布(bu)日期:2024-10-11 13:24閱讀:7來源(yuan):國知局(ju)
一種陶瓷胚體壓制裝置的制作方法

本技術(shu)主要涉及陶瓷生產,具(ju)體為一種(zhong)陶瓷胚(pei)體壓制裝置。


背景技術:

1、陶(tao)瓷是(shi)以天然(ran)粘土(tu)以及各種(zhong)天然(ran)礦物為主要原料經過粉(fen)碎混煉、成型和煅燒制(zhi)得的(de)(de)(de)(de)材料的(de)(de)(de)(de)各種(zhong)制(zhi)品,在(zai)陶(tao)瓷制(zhi)品的(de)(de)(de)(de)生產加工(gong)過程中(zhong),需(xu)要對(dui)陶(tao)瓷胚(pei)(pei)體(ti)(ti)進行(xing)壓制(zhi)成型,但是(shi)現(xian)有技(ji)(ji)術中(zhong)用于陶(tao)瓷胚(pei)(pei)體(ti)(ti)壓制(zhi)的(de)(de)(de)(de)模(mo)(mo)具在(zai)壓制(zhi)完成陶(tao)瓷后,不能(neng)夠(gou)自(zi)動(dong)對(dui)壓制(zhi)好的(de)(de)(de)(de)陶(tao)瓷進行(xing)自(zi)動(dong)脫模(mo)(mo),需(xu)要人(ren)工(gong)將陶(tao)瓷取出,增加工(gong)人(ren)工(gong)作量的(de)(de)(de)(de)同時,也(ye)容易導致(zhi)陶(tao)瓷出現(xian)損壞,因此,我們提供一種(zhong)陶(tao)瓷胚(pei)(pei)體(ti)(ti)壓制(zhi)裝置來解(jie)決(jue)現(xian)有技(ji)(ji)術中(zhong)存在(zai)的(de)(de)(de)(de)缺陷。


技術實現思路

1、本實用新(xin)型主要提供(gong)了(le)一種陶(tao)瓷胚體壓制裝置,用以解決(jue)上述(shu)背(bei)景技術(shu)中提出的技術(shu)問(wen)題。

2、本實用新型解決(jue)上述技(ji)(ji)術(shu)問題采(cai)用的(de)技(ji)(ji)術(shu)方案為(wei):

3、一種陶瓷胚體(ti)壓(ya)制裝置(zhi),包括壓(ya)制成型機(ji)體(ti),所(suo)(suo)述(shu)壓(ya)制成型機(ji)體(ti)右側前(qian)端固(gu)(gu)(gu)(gu)定(ding)開設(she)(she)有(you)(you)(you)成型槽(cao)(cao),所(suo)(suo)述(shu)成型槽(cao)(cao)內(nei)部(bu)底(di)端固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)加工(gong)(gong)臺,所(suo)(suo)述(shu)加工(gong)(gong)臺頂(ding)(ding)部(bu)前(qian)后(hou)兩側均固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)限位立柱(zhu),所(suo)(suo)述(shu)限位立柱(zhu)頂(ding)(ding)部(bu)固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)頂(ding)(ding)部(bu)支撐板(ban),所(suo)(suo)述(shu)頂(ding)(ding)部(bu)支撐板(ban)頂(ding)(ding)部(bu)固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)驅動(dong)氣缸(gang),所(suo)(suo)述(shu)頂(ding)(ding)部(bu)支撐板(ban)下方且(qie)位于限位立柱(zhu)之間(jian)設(she)(she)有(you)(you)(you)活(huo)動(dong)板(ban),所(suo)(suo)述(shu)活(huo)動(dong)板(ban)頂(ding)(ding)部(bu)前(qian)后(hou)兩側均固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)接(jie)(jie)(jie)(jie)(jie)(jie)觸傳感器,所(suo)(suo)述(shu)活(huo)動(dong)板(ban)前(qian)后(hou)兩側均固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)連(lian)(lian)(lian)桿,所(suo)(suo)述(shu)連(lian)(lian)(lian)桿上固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)限位套(tao),所(suo)(suo)述(shu)活(huo)動(dong)板(ban)底(di)部(bu)固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)沖壓(ya)件,所(suo)(suo)述(shu)加工(gong)(gong)臺頂(ding)(ding)端且(qie)位于限位立柱(zhu)之間(jian)固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)下模(mo)(mo)(mo)具,所(suo)(suo)述(shu)下模(mo)(mo)(mo)具右側固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)plc控(kong)制器,所(suo)(suo)述(shu)下模(mo)(mo)(mo)具前(qian)端底(di)部(bu)固(gu)(gu)(gu)(gu)定(ding)連(lian)(lian)(lian)接(jie)(jie)(jie)(jie)(jie)(jie)有(you)(you)(you)驅動(dong)電機(ji),所(suo)(suo)述(shu)下模(mo)(mo)(mo)具內(nei)部(bu)設(she)(she)有(you)(you)(you)受(shou)壓(ya)板(ban),所(suo)(suo)述(shu)受(shou)壓(ya)板(ban)底(di)部(bu)設(she)(she)有(you)(you)(you)自(zi)脫模(mo)(mo)(mo)機(ji)構。

4、進一步的(de)(de),所(suo)述(shu)(shu)自脫模(mo)機(ji)構包括位于下模(mo)具內(nei)部底端的(de)(de)雙(shuang)(shuang)向(xiang)螺(luo)桿(gan)(gan),所(suo)述(shu)(shu)雙(shuang)(shuang)向(xiang)螺(luo)桿(gan)(gan)外(wai)側(ce)中心處固定套設(she)有(you)(you)分割(ge)塊(kuai)(kuai),所(suo)述(shu)(shu)雙(shuang)(shuang)向(xiang)螺(luo)桿(gan)(gan)外(wai)側(ce)且(qie)位于分割(ge)塊(kuai)(kuai)兩側(ce)均套設(she)有(you)(you)內(nei)螺(luo)紋滑塊(kuai)(kuai),所(suo)述(shu)(shu)內(nei)螺(luo)紋滑塊(kuai)(kuai)頂(ding)(ding)部旋轉連接(jie)(jie)有(you)(you)交叉(cha)支(zhi)架(jia),所(suo)述(shu)(shu)交叉(cha)支(zhi)架(jia)頂(ding)(ding)部旋轉連接(jie)(jie)有(you)(you)連接(jie)(jie)耳(er),所(suo)述(shu)(shu)連接(jie)(jie)耳(er)頂(ding)(ding)部固定連接(jie)(jie)有(you)(you)受(shou)力板,所(suo)述(shu)(shu)受(shou)力板頂(ding)(ding)部固定連接(jie)(jie)有(you)(you)壓力傳感(gan)器。

5、進(jin)一(yi)步(bu)的(de),所述雙向螺(luo)桿后端(duan)通過(guo)軸承與(yu)下模具內壁旋轉連接,且所述雙向螺(luo)桿前端(duan)與(yu)驅動電機輸出端(duan)固定(ding)連接。

6、進一步的,所述內螺(luo)紋滑塊與雙向螺(luo)桿之間(jian)螺(luo)紋連接,且所述壓力傳感器和驅動電機均與plc控(kong)制器電性連接。

7、進一步的,所述(shu)活動板頂部與驅動氣缸輸出端固定(ding)連接,所述(shu)限位(wei)(wei)套(tao)滑動套(tao)設于限位(wei)(wei)立柱的外側,且(qie)所述(shu)接觸傳感器(qi)和驅動氣缸均與plc控制器(qi)電性(xing)連接。

8、進一步的(de),所(suo)述(shu)壓制成(cheng)(cheng)型(xing)(xing)(xing)(xing)機(ji)(ji)體頂(ding)部固(gu)定(ding)連接有頂(ding)板(ban),所(suo)述(shu)壓制成(cheng)(cheng)型(xing)(xing)(xing)(xing)機(ji)(ji)體底(di)部固(gu)定(ding)連接有底(di)板(ban),所(suo)述(shu)壓制成(cheng)(cheng)型(xing)(xing)(xing)(xing)機(ji)(ji)體右(you)側(ce)且(qie)位(wei)于(yu)(yu)成(cheng)(cheng)型(xing)(xing)(xing)(xing)槽(cao)后端固(gu)定(ding)連接有數(shu)顯(xian)顯(xian)示(shi)器(qi),所(suo)述(shu)數(shu)顯(xian)顯(xian)示(shi)器(qi)底(di)部固(gu)定(ding)連接有若干個等距分布的(de)操(cao)控按(an)鈕,所(suo)述(shu)壓制成(cheng)(cheng)型(xing)(xing)(xing)(xing)機(ji)(ji)體右(you)側(ce)且(qie)位(wei)于(yu)(yu)成(cheng)(cheng)型(xing)(xing)(xing)(xing)槽(cao)下(xia)方設有檢修板(ban)。

9、與現(xian)有技術相比,本實用新型的有益(yi)效(xiao)果為:

10、本實用新型通過設置(zhi)的(de)自(zi)脫模(mo)(mo)機(ji)構、驅(qu)動(dong)(dong)(dong)氣缸(gang)、接(jie)觸(chu)傳感(gan)器(qi)(qi)、驅(qu)動(dong)(dong)(dong)電(dian)機(ji)和plc控(kong)(kong)制(zhi)器(qi)(qi)配合使用,將(jiang)(jiang)(jiang)陶(tao)瓷(ci)(ci)粉末(mo)放(fang)置(zhi)在受(shou)(shou)壓(ya)(ya)(ya)板(ban)頂(ding)部(bu)(bu),然(ran)后(hou)plc控(kong)(kong)制(zhi)器(qi)(qi)啟動(dong)(dong)(dong)驅(qu)動(dong)(dong)(dong)氣缸(gang)推(tui)動(dong)(dong)(dong)活(huo)動(dong)(dong)(dong)板(ban)下(xia)移,使沖(chong)壓(ya)(ya)(ya)件進入到下(xia)模(mo)(mo)具(ju)內部(bu)(bu)并配合受(shou)(shou)壓(ya)(ya)(ya)板(ban)對(dui)(dui)陶(tao)瓷(ci)(ci)粉末(mo)進行沖(chong)壓(ya)(ya)(ya)成型,然(ran)后(hou)plc控(kong)(kong)制(zhi)器(qi)(qi)啟動(dong)(dong)(dong)驅(qu)動(dong)(dong)(dong)氣缸(gang)拉(la)動(dong)(dong)(dong)活(huo)動(dong)(dong)(dong)板(ban)上移,當接(jie)觸(chu)傳感(gan)器(qi)(qi)與(yu)頂(ding)部(bu)(bu)支撐板(ban)底部(bu)(bu)接(jie)觸(chu)時,plc控(kong)(kong)制(zhi)器(qi)(qi)控(kong)(kong)制(zhi)驅(qu)動(dong)(dong)(dong)氣缸(gang)停止,然(ran)后(hou)啟動(dong)(dong)(dong)驅(qu)動(dong)(dong)(dong)電(dian)機(ji)帶動(dong)(dong)(dong)雙(shuang)向(xiang)(xiang)螺桿旋轉,使兩個內螺紋滑塊同時向(xiang)(xiang)分(fen)割(ge)塊一(yi)側移動(dong)(dong)(dong),從(cong)(cong)而(er)通過交叉支架(jia)推(tui)動(dong)(dong)(dong)受(shou)(shou)力板(ban)上移,從(cong)(cong)而(er)將(jiang)(jiang)(jiang)受(shou)(shou)壓(ya)(ya)(ya)板(ban)推(tui)出下(xia)模(mo)(mo)具(ju)內部(bu)(bu),從(cong)(cong)而(er)實現(xian)陶(tao)瓷(ci)(ci)的(de)自(zi)動(dong)(dong)(dong)脫模(mo)(mo),然(ran)后(hou)當工作(zuo)人員(yuan)將(jiang)(jiang)(jiang)成型好(hao)的(de)陶(tao)瓷(ci)(ci)取下(xia)后(hou),壓(ya)(ya)(ya)力傳感(gan)器(qi)(qi)檢(jian)測到受(shou)(shou)壓(ya)(ya)(ya)板(ban)頂(ding)部(bu)(bu)的(de)壓(ya)(ya)(ya)力消失后(hou),此時plc控(kong)(kong)制(zhi)器(qi)(qi)控(kong)(kong)制(zhi)驅(qu)動(dong)(dong)(dong)電(dian)機(ji)反向(xiang)(xiang)轉動(dong)(dong)(dong),將(jiang)(jiang)(jiang)受(shou)(shou)壓(ya)(ya)(ya)板(ban)回位,使得(de)該(gai)陶(tao)瓷(ci)(ci)胚體壓(ya)(ya)(ya)制(zhi)裝置(zhi)使用時,能夠自(zi)動(dong)(dong)(dong)對(dui)(dui)壓(ya)(ya)(ya)制(zhi)好(hao)的(de)陶(tao)瓷(ci)(ci)進行自(zi)動(dong)(dong)(dong)脫模(mo)(mo),不(bu)需要人工將(jiang)(jiang)(jiang)陶(tao)瓷(ci)(ci)取出,減(jian)少(shao)工人工作(zuo)量,避免陶(tao)瓷(ci)(ci)出現(xian)損壞。

11、以下將(jiang)結(jie)合附圖與具體的(de)實施例(li)對(dui)本(ben)實用新型進行詳細的(de)解釋(shi)說(shuo)明(ming)。



技術特征:

1.一種陶(tao)瓷胚體(ti)(ti)壓(ya)制裝置,包括壓(ya)制成(cheng)型(xing)機體(ti)(ti)(1),其特(te)征在于:所(suo)(suo)(suo)(suo)述壓(ya)制成(cheng)型(xing)機體(ti)(ti)(1)右(you)側前端(duan)固(gu)(gu)定(ding)(ding)(ding)(ding)開設(she)有(you)(you)(you)(you)(you)成(cheng)型(xing)槽(cao)(103),所(suo)(suo)(suo)(suo)述成(cheng)型(xing)槽(cao)(103)內(nei)(nei)部(bu)(bu)底(di)端(duan)固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)加(jia)工臺(tai)(2),所(suo)(suo)(suo)(suo)述加(jia)工臺(tai)(2)頂(ding)(ding)部(bu)(bu)前后(hou)兩側均固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)限(xian)位(wei)立(li)(li)柱(201),所(suo)(suo)(suo)(suo)述限(xian)位(wei)立(li)(li)柱(201)頂(ding)(ding)部(bu)(bu)固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)頂(ding)(ding)部(bu)(bu)支撐(cheng)板(ban)(202),所(suo)(suo)(suo)(suo)述頂(ding)(ding)部(bu)(bu)支撐(cheng)板(ban)(202)頂(ding)(ding)部(bu)(bu)固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)驅動(dong)氣缸(203),所(suo)(suo)(suo)(suo)述頂(ding)(ding)部(bu)(bu)支撐(cheng)板(ban)(202)下(xia)方(fang)且(qie)位(wei)于限(xian)位(wei)立(li)(li)柱(201)之(zhi)間(jian)設(she)有(you)(you)(you)(you)(you)活(huo)動(dong)板(ban)(204),所(suo)(suo)(suo)(suo)述活(huo)動(dong)板(ban)(204)頂(ding)(ding)部(bu)(bu)前后(hou)兩側均固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)接(jie)觸傳感器(205),所(suo)(suo)(suo)(suo)述活(huo)動(dong)板(ban)(204)前后(hou)兩側均固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)連(lian)(lian)桿(gan)(gan)(207),所(suo)(suo)(suo)(suo)述連(lian)(lian)桿(gan)(gan)(207)上固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)限(xian)位(wei)套(208),所(suo)(suo)(suo)(suo)述活(huo)動(dong)板(ban)(204)底(di)部(bu)(bu)固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)沖(chong)壓(ya)件(206),所(suo)(suo)(suo)(suo)述加(jia)工臺(tai)(2)頂(ding)(ding)端(duan)且(qie)位(wei)于限(xian)位(wei)立(li)(li)柱(201)之(zhi)間(jian)固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)下(xia)模(mo)具(ju)(209),所(suo)(suo)(suo)(suo)述下(xia)模(mo)具(ju)(209)右(you)側固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)plc控(kong)制器(211),所(suo)(suo)(suo)(suo)述下(xia)模(mo)具(ju)(209)前端(duan)底(di)部(bu)(bu)固(gu)(gu)定(ding)(ding)(ding)(ding)連(lian)(lian)接(jie)有(you)(you)(you)(you)(you)驅動(dong)電機(210),所(suo)(suo)(suo)(suo)述下(xia)模(mo)具(ju)(209)內(nei)(nei)部(bu)(bu)設(she)有(you)(you)(you)(you)(you)受壓(ya)板(ban)(212),所(suo)(suo)(suo)(suo)述受壓(ya)板(ban)(212)底(di)部(bu)(bu)設(she)有(you)(you)(you)(you)(you)自(zi)脫模(mo)機構(3)。

2.根據權利(li)要求1所(suo)述(shu)的一種陶瓷(ci)胚體壓制裝置,其特征在于(yu):所(suo)述(shu)自脫模機構(gou)(3)包括位(wei)于(yu)下模具(209)內(nei)部底端的雙向(xiang)(xiang)螺桿(301),所(suo)述(shu)雙向(xiang)(xiang)螺桿(301)外(wai)(wai)側(ce)中心處(chu)固定套設有分割塊(kuai)(kuai)(302),所(suo)述(shu)雙向(xiang)(xiang)螺桿(301)外(wai)(wai)側(ce)且位(wei)于(yu)分割塊(kuai)(kuai)(302)兩側(ce)均套設有內(nei)螺紋滑塊(kuai)(kuai)(303),所(suo)述(shu)內(nei)螺紋滑塊(kuai)(kuai)(303)頂(ding)部旋轉(zhuan)連(lian)接有交叉支架(jia)(304),所(suo)述(shu)交叉支架(jia)(304)頂(ding)部旋轉(zhuan)連(lian)接有連(lian)接耳(er)(305),所(suo)述(shu)連(lian)接耳(er)(305)頂(ding)部固定連(lian)接有受(shou)力(li)板(306),所(suo)述(shu)受(shou)力(li)板(306)頂(ding)部固定連(lian)接有壓力(li)傳(chuan)感器(307)。

3.根(gen)據權利要求(qiu)2所述的一種陶瓷胚(pei)體(ti)壓制裝置,其特征在于:所述雙向螺桿(gan)(301)后(hou)端(duan)通(tong)過軸承與下模(mo)具(ju)(209)內壁旋轉連接,且所述雙向螺桿(gan)(301)前端(duan)與驅動電機(ji)(210)輸出端(duan)固(gu)定連接。

4.根據權利要(yao)求2所(suo)述(shu)(shu)(shu)的(de)一(yi)種陶瓷胚體(ti)壓制裝置,其特(te)征(zheng)在(zai)于:所(suo)述(shu)(shu)(shu)內螺(luo)紋滑塊(303)與雙向螺(luo)桿(gan)(301)之(zhi)間螺(luo)紋連接,且所(suo)述(shu)(shu)(shu)壓力傳(chuan)感器(307)和驅動(dong)電機(210)均與plc控(kong)制器(211)電性連接。

5.根據權利(li)要求1所述的一種陶瓷胚體壓制裝置,其特征在于:所述活動(dong)板(204)頂部與驅動(dong)氣缸(203)輸出(chu)端固定連接,所述限位(wei)套(208)滑(hua)動(dong)套設于限位(wei)立(li)柱(201)的外側,且所述接觸傳感器(205)和驅動(dong)氣缸(203)均與plc控(kong)制器(211)電性連接。

6.根(gen)據權利要求1所述(shu)的一種陶瓷胚體(ti)壓(ya)(ya)制(zhi)裝置(zhi),其(qi)特征在于(yu)(yu):所述(shu)壓(ya)(ya)制(zhi)成(cheng)型(xing)(xing)機(ji)體(ti)(1)頂(ding)部(bu)固定連(lian)接(jie)(jie)(jie)有頂(ding)板(ban)(102),所述(shu)壓(ya)(ya)制(zhi)成(cheng)型(xing)(xing)機(ji)體(ti)(1)底(di)部(bu)固定連(lian)接(jie)(jie)(jie)有底(di)板(ban)(101),所述(shu)壓(ya)(ya)制(zhi)成(cheng)型(xing)(xing)機(ji)體(ti)(1)右側且位于(yu)(yu)成(cheng)型(xing)(xing)槽(cao)(103)后端固定連(lian)接(jie)(jie)(jie)有數顯(xian)顯(xian)示(shi)器(104),所述(shu)數顯(xian)顯(xian)示(shi)器(104)底(di)部(bu)固定連(lian)接(jie)(jie)(jie)有若干個等(deng)距分布的操控(kong)按鈕(105),所述(shu)壓(ya)(ya)制(zhi)成(cheng)型(xing)(xing)機(ji)體(ti)(1)右側且位于(yu)(yu)成(cheng)型(xing)(xing)槽(cao)(103)下方(fang)設有檢(jian)修板(ban)(106)。


技術總結
本技術提供了一種陶瓷胚體壓制裝置,包括壓制成型機體,壓制成型機體右側前端固定開設有成型槽,成型槽內部底端固定連接有加工臺,頂部支撐板下方且位于限位立柱之間設有活動板,活動板頂部前后兩側均固定連接有接觸傳感器,活動板底部固定連接有沖壓件,加工臺頂端且位于限位立柱之間固定連接有下模具,下模具右側固定連接有PLC控制器,下模具內部設有受壓板,受壓板底部設有自脫模機構,本技術通過設置的自脫模機構、驅動氣缸、接觸傳感器、驅動電機和PLC控制器配合使用,能夠自動對壓制好的陶瓷進行自動脫模,不需要人工將陶瓷取出,減少工人工作量,避免陶瓷出現損壞。

技術研發人員:仝元東,寧君,范敬城,陳擁強,張兆華,汪志良
受保護的技術使用者:景德鎮樂華陶瓷潔具有限公司
技術研發日:20240220
技術公布日:2024/10/10
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