TW201431666A - Blowing molding method and device - Google Patents
Blowing molding method and device Download PDFInfo
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- TW201431666A TW201431666A TW102104611A TW102104611A TW201431666A TW 201431666 A TW201431666 A TW 201431666A TW 102104611 A TW102104611 A TW 102104611A TW 102104611 A TW102104611 A TW 102104611A TW 201431666 A TW201431666 A TW 201431666A
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本發明是有關於一種吹塑成形,特別是指一種吹塑成形方法與裝置。 The present invention relates to a blow molding process, and more particularly to a blow molding method and apparatus.
現有的塑膠容器通常以吹塑成形方法所製造。常見的吹塑成形方法有二種方式,第一種方式是利用一射出機先射出塑料並形成瓶胚後,將瓶胚一一存儲存於倉庫內,待要出貨前,再將瓶胚取出,並經由整列後置入一拉吹成形機的輸送裝置,對瓶胚進行加熱至成形溫度,之後,再使加熱後之瓶胚一一置入一成形模具中,並透過高壓氣體使該瓶胚吹塑成模具內壁之形狀後,即完成塑膠容器的成品。 Existing plastic containers are usually manufactured by a blow molding method. There are two common methods of blow molding. The first method is to use an injection machine to first shoot out the plastic and form the preform. Then store the preforms in the warehouse one by one, and then place the preforms before shipment. Taking out and heating the preform to a forming temperature through a conveying device arranged in a pull-blow molding machine, and then placing the heated preforms into a forming mold one by one, and passing the high-pressure gas After the preform is blown into the shape of the inner wall of the mold, the finished product of the plastic container is completed.
第二種方式是利用一射拉吹成型機,直接射出塑料並形成瓶胚後,同時將瓶胚加熱至成形溫度並搭配一成形模具,就能夠將瓶胚吹塑成具有該成形模具內壁形狀的成品。 The second way is to blow the preform into the inner wall of the forming mold by directly spraying out the plastic and forming the preform after a preforming blow molding machine, and simultaneously heating the preform to the forming temperature and using a forming mold. The finished shape.
然而,第一種的吹塑成形方法受限於該射出機的冷卻時間太長,加上瓶胚要由室溫加熱至其成形的溫度,因溫差較大,因此加熱時間長。同時,以上的兩種成形 方法均是該瓶胚一次吹塑為成品,容易因過度拉伸該瓶胚,而造成厚薄不均的現象,因此,生產產品不良率較高。 However, the first blow molding method is limited in that the cooling time of the injection machine is too long, and the preform is heated from room temperature to its forming temperature, and the heating time is long because the temperature difference is large. At the same time, the above two forms The method is that the preform is blow molded into a finished product at one time, and it is easy to excessively stretch the preform, thereby causing uneven thickness and, therefore, the production product has a high defect rate.
因此,本發明的第一目的,即在提供一種具有手把一體成型且能夠提高產能並降低不良率的吹塑成形方法。 Accordingly, it is a first object of the present invention to provide a blow molding method which has a handle integrated and which can increase productivity and reduce a defective rate.
於是,本發明一種吹塑成形方法,包含下列步驟,步驟1:設置持續運轉的一第一輸送路徑及一與該第一輸送路徑銜接的第二輸送路徑。步驟2:在該第一輸送路徑上射出塑料並注塑形成至少一瓶胚。步驟3:將該瓶胚由該第一輸送路徑移送至該第二輸送路徑後,對該瓶胚加熱。步驟4:利用一位於該第二輸送路徑上的預吹模具將該瓶胚預吹成形為一半成品。步驟5:在該第二輸送路徑上運送該半成品並對該半成品加熱,及步驟6:利用一位於該第二輸送路徑上的吹製成形模具將該半成品吹塑成形為一成品。 Thus, a blow molding method of the present invention comprises the following steps: Step 1: setting a first conveying path for continuous operation and a second conveying path for engaging the first conveying path. Step 2: Injection of plastic on the first conveying path and injection molding to form at least one preform. Step 3: After the preform is transferred from the first conveying path to the second conveying path, the preform is heated. Step 4: Pre-blowing the preform into a half finished product using a pre-blow mold located on the second conveying path. Step 5: transporting the semi-finished product on the second transport path and heating the semi-finished product, and step 6: blow molding the semi-finished product into a finished product by using a blow molding die located on the second transport path.
本發明的第二目的,即在提供一種具有手把一體成型且能夠提高產能並降低不良率的吹塑成形裝置。 A second object of the present invention is to provide a blow molding apparatus having a handle integrally formed and capable of improving productivity and reducing defective rate.
本發明一種吹塑成形裝置,包含一輸送單元、一瓶胚注塑模具、一第一加熱單元、一預吹模具、一第二加熱單元,及一吹製成形模具。 A blow molding apparatus according to the present invention comprises a conveying unit, a preform injection mold, a first heating unit, a pre-blowing mold, a second heating unit, and a blow molding mold.
該輸送單元包括持續運轉的一第一輸送路徑及一與該第一輸送路徑銜接的第二輸送路徑。該瓶胚注塑模具設置於該第一輸送路徑上且用以形成至少一瓶胚。該第一加熱單元設置於該第二輸送路徑上,且對該瓶胚加熱。 該預吹模具設置於該第二輸送路徑上且用以將該瓶胚預吹為一半成品。該第二加熱單元設置於該第二輸送路徑上且對該半成品加熱。該吹製成形模具設置於該第二輸送路徑上且用以將該半成品吹製為一成品。 The conveying unit includes a first conveying path for continuous operation and a second conveying path for engaging the first conveying path. The preform injection mold is disposed on the first conveying path and is configured to form at least one preform. The first heating unit is disposed on the second conveying path and heats the preform. The pre-blowing mold is disposed on the second conveying path and is used to pre-bloat the preform into half of the finished product. The second heating unit is disposed on the second conveying path and heats the semi-finished product. The blow molding die is disposed on the second conveying path and is used to blow the semi-finished product into a finished product.
本發明的功效在於利用該輸送單元使該瓶胚尚有餘溫時傳送該瓶胚,同時利用該第一加熱單元使該瓶胚持續被加熱,以減少與成形溫度間的差異,並利用該預吹模具先將該瓶胚預吹為該半成品,再經該吹製成形模具吹製為該成品,避免該瓶胚因一次過度拉伸而造成厚薄不均的問題,因此,能夠節省加熱作業時間、提高產能,並降低產品不良率。 The utility model has the advantages that the preform unit transmits the preform when the preform has a residual temperature, and the preform is continuously heated by the first heating unit to reduce the difference from the forming temperature, and the pre-use is utilized. The blow mold first pre-blowing the preform into the semi-finished product, and then blown into the finished product through the blow molding die, thereby avoiding the problem that the preform is unevenly caused by one over-stretching, thereby saving heating operation time. Increase production capacity and reduce product defect rate.
1‧‧‧塑料射出單元 1‧‧‧Plastic injection unit
11‧‧‧射出座 11‧‧‧ shots
12‧‧‧射出座 12‧‧‧ shots
13‧‧‧射出座 13‧‧‧ shots
2‧‧‧瓶胚注塑模具 2‧‧‧ preform injection mold
20‧‧‧鎖模機構 20‧‧‧Clamping mechanism
21‧‧‧轉盤 21‧‧‧ Turntable
3‧‧‧第一加熱單元 3‧‧‧First heating unit
4‧‧‧預吹模具 4‧‧‧Pre-blowing mould
40‧‧‧鎖模機構 40‧‧‧Clamping mechanism
5‧‧‧第二加熱單元 5‧‧‧second heating unit
6‧‧‧吹製成形模具 6‧‧‧Blow molding
60‧‧‧鎖模機構 60‧‧‧Clamping mechanism
7‧‧‧輸送單元 7‧‧‧Conveying unit
71‧‧‧第二輸送路徑 71‧‧‧Second transport path
8‧‧‧成品 8‧‧‧ finished products
80‧‧‧瓶胚 80‧‧‧ preform
81‧‧‧半成品 81‧‧‧Semi-finished products
91~97‧‧‧步驟 91~97‧‧‧Steps
本發明之其他的特徵及功效,將於參照圖式的實施方式中清楚地呈現,其中:圖1是一示意圖,說明本發明吹塑成形裝置的一第一較佳實施例;圖2是一示意圖,說明本發明的一第二較佳實施例的二射出座;圖3是一示意圖,說明本發明的一第三較佳實施例的三射出座;及圖4是一流程圖,說明本發明吹塑成形方法。 Other features and advantages of the present invention will be apparent from the embodiments of the present invention, wherein: Figure 1 is a schematic view showing a first preferred embodiment of the blow molding apparatus of the present invention; BRIEF DESCRIPTION OF THE DRAWINGS FIG. 3 is a schematic view showing a three-shot housing of a third preferred embodiment of the present invention; and FIG. 4 is a flow chart illustrating the present invention; Invented a blow molding method.
在本發明被詳細描述之前,應當注意在以下的 說明內容中,類似的元件是以相同的編號來表示。 Before the present invention is described in detail, it should be noted in the following In the description, similar elements are denoted by the same reference numerals.
參閱圖1,本發明吹塑成形裝置的一第一較佳實施例,包含一塑料射出單元1、一瓶胚注塑模具2、一輸送單元7、一第一加熱單元3、一預吹模具4、一第二加熱單元5,及一吹製成形模具6。 Referring to Figure 1, a first preferred embodiment of the blow molding apparatus of the present invention comprises a plastic injection unit 1, a preform injection mold 2, a delivery unit 7, a first heating unit 3, and a pre-blowing mold 4. A second heating unit 5 and a blow molding die 6.
該塑料射出單元1包括一用以射出塑料的射出座11,並用以形成單層瓶胚80,該塑料射出單元1為現有技術,在此不再贅述。 The plastic injection unit 1 includes an injection base 11 for projecting plastic, and is used to form a single-layer preform 80. The plastic injection unit 1 is a prior art and will not be described herein.
該瓶胚注塑模具2安裝一鎖模機構20內,該鎖模機構20具有一能夠轉動且為圓形的轉盤21,該瓶胚注塑模具2包括二互相對合的模芯及模穴(圖未示),及一分別與該等模穴相通的注澆口(圖未示),由該等模芯及模穴圍繞界定出該瓶胚的形狀,該注澆口供該射出座11的塑料注塑並形成一個以上的單層瓶胚80,該瓶胚注塑模具2為現有技術,在此不再贅述。開模後,利用該鎖模機構20的轉盤21將該等瓶胚80旋轉移動至對向。 The preform injection mold 2 is mounted in a mold clamping mechanism 20 having a rotatable and circular turntable 21, the preform injection mold 2 comprising two mutually opposing cores and cavities (Fig. Not shown, and a gate (not shown) respectively communicating with the cavity, the shape of the preform is defined by the core and the cavity, and the gate is provided for the plastic of the injection seat 11. One or more single-layer preforms 80 are injection molded and formed, and the preform injection mold 2 is prior art and will not be described herein. After the mold is opened, the preforms 80 are rotationally moved to the opposite direction by the turntable 21 of the mold clamping mechanism 20.
該輸送單元7包括一持續運轉的第一輸送路徑(圖未示)及一與該第一輸送路徑銜接的第二輸送路徑71,在本第一較佳實施例中,該第一輸送路徑是由該鎖模機構20的轉盤21持續轉動所形成的,且該第二輸送路徑71為一循環運轉的封閉矩形,該第二輸送路徑71緊鄰該轉盤21,使將該等瓶胚80能夠順利由該第一輸送路徑被傳送至該第二輸送路徑71。該第一加熱單元3、該預吹模具4、該第二加熱單元5,及該吹製成形模具6分別依序設置於該第二 輸送路徑71上。 The transport unit 7 includes a first transport path (not shown) that is continuously operated and a second transport path 71 that is coupled to the first transport path. In the first preferred embodiment, the first transport path is Formed by the continuous rotation of the turntable 21 of the clamping mechanism 20, and the second conveying path 71 is a closed rectangular operation, the second conveying path 71 is adjacent to the rotating plate 21, so that the preforms 80 can be smoothly The first conveying path is conveyed to the second conveying path 71. The first heating unit 3, the pre-blowing mold 4, the second heating unit 5, and the blow molding die 6 are respectively disposed in the second On the transport path 71.
該第一加熱單元3設置於該鎖模機構20及該預吹模具4之間,且對該第二輸送路徑71上的每一瓶胚80加熱,在本第一較佳實施例中,該第一加熱單元3為加熱燈管,但該第一加熱單元3也能夠為加熱管或加熱器。 The first heating unit 3 is disposed between the clamping mechanism 20 and the pre-blowing mold 4, and heats each preform 80 on the second conveying path 71. In the first preferred embodiment, the first heating unit 3 The first heating unit 3 is a heating tube, but the first heating unit 3 can also be a heating tube or a heater.
該預吹模具4安裝於一鎖模機構40內,且該預吹模具4包括二互相對合的模塊(圖未示)、一由該等模塊圍繞界定出的預吹模穴(圖未示),及一分別與該預吹模穴相通的孔道(圖未示)。每一瓶胚80經由該第二輸送路徑71輸送至該預吹模具4的預吹模穴內,並藉由該孔道將每一瓶胚80先預吹為一半成品81。開模後,每一半成品81由該第二輸送路徑71持續運送。 The pre-blowing die 4 is mounted in a clamping mechanism 40, and the pre-blowing die 4 includes two mutually opposing modules (not shown), and a pre-blowing cavity defined by the modules (not shown). And a hole (not shown) respectively communicating with the pre-blowing cavity. Each preform 80 is conveyed via the second conveying path 71 into a pre-blowing cavity of the pre-blowing die 4, and each preform 80 is pre-blowing into a half finished product 81 by the opening. After the mold is opened, each of the semi-finished products 81 is continuously conveyed by the second conveyance path 71.
該第二加熱單元5設置該鎖模機構40及該吹製成形模具6之間且對於該第二輸送路徑71上的每一半成品81加熱,在本第一較佳實施例中,該第二加熱單元5為加熱燈管,但該第二加熱單元5也能夠為加熱管或加熱器。 The second heating unit 5 is disposed between the clamping mechanism 40 and the blow molding die 6 and heats each semi-finished product 81 on the second conveying path 71. In the first preferred embodiment, the second The heating unit 5 is a heating tube, but the second heating unit 5 can also be a heating tube or a heater.
該吹製成形模具6安裝於一鎖模機構60內,且該吹製成形模具6包括二互相對合的模塊(圖未示)、一由該等模塊圍繞界定出的成形模穴(圖未示),及一分別與該成形模穴相通的孔道(圖未示)。每一半成品81經由該第二輸送路徑71輸送至該吹製成形模具6的成形模穴內,並藉由該孔道將每一半成品81吹製為一成品8,且該吹製成形模具6為現有技術,在此不再贅述。開模後,每一成品8經由該第二輸送路徑71排出。 The blow molding die 6 is mounted in a clamping mechanism 60, and the blow molding die 6 includes two mutually opposing modules (not shown), and a forming cavity surrounded by the modules (Fig. And a channel (not shown) respectively communicating with the forming cavity. Each half of the finished product 81 is conveyed into the forming cavity of the blow molding die 6 via the second conveying path 71, and each semi-finished product 81 is blown into a finished product 8 by the hole, and the blow molding die 6 is The prior art is not described here. After the mold is opened, each finished product 8 is discharged through the second conveying path 71.
本發明吹塑成形裝置的一第二較佳實施例,包含一塑料射出單元1、一輸送單元7、一瓶胚注塑模具2、一第一加熱單元3、一預吹模具4、一第二加熱單元5,及一吹製成形模具6。 A second preferred embodiment of the blow molding apparatus of the present invention comprises a plastic injection unit 1, a delivery unit 7, a preform injection mold 2, a first heating unit 3, a pre-blowing mold 4, and a second The heating unit 5, and a blow molding die 6.
本第二較佳實施例與該第一較佳實施例大致相同,主要差異在於:參閱圖2,本第二較佳實施例的該塑料射出單元1共包括二分別供應塑料的射出座11、12,並用以形成雙層的瓶胚80。該等射出座11、12成一夾角設置並緊鄰於該鎖模機構20的轉盤21,且該瓶胚注塑模具2對準其中一射出座11並注塑第一層塑料後,該轉盤21會逆時針轉動並帶動該瓶胚注塑模具2轉動至另一射出座12後,再注塑第二層塑料,以形成雙層的瓶胚80,該轉盤21再逆時針轉動並帶動該瓶胚80轉動至另一位置後排入該第二輸送路徑71(見圖1)。 The second preferred embodiment is substantially the same as the first preferred embodiment. The main difference is that, referring to FIG. 2, the plastic injection unit 1 of the second preferred embodiment includes two injection housings 11 respectively for supplying plastic. 12, and used to form a double layer of preforms 80. The ejection mounts 11 and 12 are disposed at an angle close to the turntable 21 of the clamping mechanism 20, and after the preform injection mold 2 is aligned with one of the injection mounts 11 and the first layer of plastic is injection molded, the turntable 21 is counterclockwise. After rotating and driving the preform injection mold 2 to another injection seat 12, a second layer of plastic is injected to form a double-layer preform 80, and the turntable 21 is rotated counterclockwise and drives the preform 80 to rotate to another After a position, it is discharged into the second conveying path 71 (see Fig. 1).
本發明吹塑成形裝置的一第三較佳實施例,包含一塑料射出單元1、一輸送單元7、一瓶胚注塑模具2、一第一加熱單元3、一預吹模具4、一第二加熱單元5,及一吹製成形模具6。 A third preferred embodiment of the blow molding apparatus of the present invention comprises a plastic injection unit 1, a delivery unit 7, a preform injection mold 2, a first heating unit 3, a pre-blowing mold 4, and a second The heating unit 5, and a blow molding die 6.
本第三較佳實施例與該第一較佳實施例大致相同,主要差異在於:參閱圖3,本第三較佳實施例的該塑料射出單元1共包括三分別供應塑料的射出座11、12、13,並用以形成三層的瓶胚80。該等射出座11、12、13呈垂直相交設置 並緊鄰於該鎖模機構20的轉盤21,且該瓶胚注塑模具2對準其中一射出座11並注塑第一層塑料後,該轉盤21會逆時針轉動並帶動該瓶胚注塑模具2轉動至另一射出座12,再注塑第二層塑料;最後,該轉盤21再次逆時針轉動並帶動該瓶胚注塑模具2轉動至另一射出座13,並注塑第三層塑料,以形成三層的瓶胚80,該轉盤21再逆時針轉動並帶動該瓶胚80轉動至另一位置後排入該第二輸送路徑71(見圖1)。 The third preferred embodiment is substantially the same as the first preferred embodiment. The main difference is that, referring to FIG. 3, the plastic injection unit 1 of the third preferred embodiment includes three injection housings 11 respectively for supplying plastic. 12, 13, and used to form a three-layer preform 80. The injection seats 11, 12, 13 are vertically intersected And adjacent to the turntable 21 of the clamping mechanism 20, and after the preform injection mold 2 is aligned with one of the injection mounts 11 and the first layer of plastic is injected, the turntable 21 rotates counterclockwise and drives the preform injection mold 2 to rotate. To the other injection base 12, a second layer of plastic is injected; finally, the turntable 21 is rotated counterclockwise again to drive the preform injection mold 2 to rotate to another injection seat 13, and a third layer of plastic is injection molded to form three layers. The preform 80 is rotated counterclockwise and the preform 80 is rotated to another position and discharged into the second conveying path 71 (see Fig. 1).
參閱圖4,本發明吹塑成形方法,包含下列步驟,並結合本發明吹塑成形裝置的第一較佳實施例加以說明。 Referring to Figure 4, the blow molding method of the present invention comprises the following steps and is described in connection with a first preferred embodiment of the blow molding apparatus of the present invention.
步驟91:設置持續運轉的一第一輸送路徑及一與該第一輸送路徑銜接的第二輸送路徑,較佳地,該第一輸送路徑由轉盤轉動所形成,且該第二輸送路徑為一循環運轉的封閉矩形。 Step 91: setting a first conveying path for continuous operation and a second conveying path for engaging with the first conveying path. Preferably, the first conveying path is formed by rotation of the turntable, and the second conveying path is A closed rectangle that runs in a loop.
步驟92:利用塑料射出單元及瓶胚注塑模具,在第一輸送路徑上注塑塑料並形成至少一瓶胚,且瓶胚為單層瓶胚。 Step 92: Using plastic injection unit and preform injection mold, plastic injection molding on the first conveying path and forming at least one preform, and the preform is a single layer preform.
步驟93:脫模後的瓶胚仍具有餘溫,並利用轉盤將該瓶胚移送至第二輸送路徑,瓶胚經過第一加熱單元時,第一加熱單元會對瓶胚加熱。 Step 93: The preform after demolding still has a residual temperature, and the preform is transferred to the second conveying path by using a turntable. When the preform passes through the first heating unit, the first heating unit heats the preform.
步驟94:被加熱後的瓶胚經由第二輸送路徑運送至預吹模具內並預吹成形為一半成品。 Step 94: The heated preform is transported into the pre-blowing mold via the second conveying path and pre-blowing into half of the finished product.
步驟95:脫模後的該半成品仍具有餘溫,並經 過第二加熱單元時,第二加熱單元會對該半成品加熱。 Step 95: The semi-finished product after demolding still has residual temperature and When the second heating unit passes, the second heating unit heats the semi-finished product.
步驟96:將被加熱後的半成品經由第二輸送路徑運送至吹製成形模具內並吹塑成形為一具有一手把的成品,在此,只要配合不同的吹製成形模具也能夠形成沒有手把的成品,例如塑膠瓶、寶特瓶、水壼等塑膠容器。 Step 96: transporting the heated semi-finished product into the blow molding die via the second conveying path and blow molding into a finished product having a handle, wherein the handle can be formed without any handle Finished products, such as plastic bottles, PET bottles, water bottles and other plastic containers.
步驟97:脫模後的成品隨著輸送單元一一排出,即完成作業。 Step 97: The finished product after demolding is discharged one by one with the conveying unit, that is, the work is completed.
綜上所述,本利用該瓶胚80尚有餘溫時,經由該第一加熱單元3持續加熱,能夠減少加熱時間及耗電量,同時容易控制該瓶胚80的溫度,並利用該預吹模具4先預吹為該半成品81後,再吹製為該成品8,利用兩段式分次拉伸該等瓶胚80,以減少一次過度拉伸該等瓶胚80所造成厚度不均的問題,因此,能夠提高成品良率,故確實能達成本發明的目的。 As described above, when the preform 80 has a residual temperature, the heating is continued by the first heating unit 3, whereby the heating time and the power consumption can be reduced, and the temperature of the preform 80 can be easily controlled, and the pre-blowing can be utilized. After the mold 4 is pre-blowed into the semi-finished product 81, it is blown into the finished product 8, and the preforms 80 are stretched in two stages to reduce the thickness unevenness caused by over-stretching the preforms 80 at a time. The problem is therefore that the yield of the finished product can be improved, so that the object of the present invention can be achieved.
惟以上所述者,僅為本發明之較佳實施例而已,當不能以此限定本發明實施之範圍,即大凡依本發明申請專利範圍及專利說明書內容所作之簡單的等效變化與修飾,皆仍屬本發明專利涵蓋之範圍內。 The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, that is, the simple equivalent changes and modifications made by the patent application scope and patent specification content of the present invention, All remain within the scope of the invention patent.
1‧‧‧塑料射出單元 1‧‧‧Plastic injection unit
11‧‧‧射出座 11‧‧‧ shots
2‧‧‧瓶胚注塑模具 2‧‧‧ preform injection mold
20‧‧‧鎖模機構 20‧‧‧Clamping mechanism
21‧‧‧轉盤 21‧‧‧ Turntable
3‧‧‧第一加熱單元 3‧‧‧First heating unit
4‧‧‧預吹模具 4‧‧‧Pre-blowing mould
40‧‧‧鎖模機構 40‧‧‧Clamping mechanism
5‧‧‧第二加熱單元 5‧‧‧second heating unit
6‧‧‧吹製成形模具 6‧‧‧Blow molding
60‧‧‧鎖模機構 60‧‧‧Clamping mechanism
7‧‧‧輸送單元 7‧‧‧Conveying unit
71‧‧‧第二輸送路徑 71‧‧‧Second transport path
8‧‧‧成品 8‧‧‧ finished products
80‧‧‧瓶胚 80‧‧‧ preform
81‧‧‧半成品 81‧‧‧Semi-finished products
Claims (10)
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TW102104611A TW201431666A (en) | 2013-02-06 | 2013-02-06 | Blowing molding method and device |
Applications Claiming Priority (1)
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TW102104611A TW201431666A (en) | 2013-02-06 | 2013-02-06 | Blowing molding method and device |
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Publication Number | Publication Date |
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TW201431666A true TW201431666A (en) | 2014-08-16 |
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Application Number | Title | Priority Date | Filing Date |
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