201247483 六、發明說明： 【發明所屬之技術領域】 本發明是關於一種飲料瓶的封蓋方法及飲料瓶自動封 盍機構，特別是一種平衡熱裝填飲料瓶封蓋冷卻後内壓力 的方法及飲料瓶封蓋裝置。 【先前技術】 現有飲料市場開發有茶飲料…等多種產品，並封裝於 飲料瓶以便於消費者選購飲用。.如茶飲料等經由自動化的 飲料自動填充機裝填、封蓋作業時，一般是採取熱填充方 式進行’亦即茶飲料在未完成降溫至室溫的狀態下，以高 於室溫的液溫即裝填於塑膠飲料瓶（如：PET材質的飲料槪 )内，接續進行飲料瓶的瓶蓋封蓋步驟後再輸出。 惟目前塑膠飲料瓶為了減少瓶子塑料用量、降低成本 之故，rfM吏塑膝飲料瓶之強度相對較薄情況了，以致前述 飲料瓶自動填充機對飲料觀進行飲料的熱裝填及封蓋等步 驟後塑膠飲料瓶一經置放而降溫至室溫狀態下，易使塑 勝飲料瓶因冷卻後瓶内氣壓降低以及飲料冷卻縮減體積， 7 Μ塑膠飲料瓶厚度較薄，而使塑膠飲料瓶收縮而產生凹 陷見象W致飲料瓶外形不佳而會影響瓶裝飲料的銷售。 為解决刖述熱裝填飲料瓶封蓋後’飲料瓶因冷卻收縮 凹^的問題’有人提出了如我國證書號數第1310751號 。。專利案所揭不的「除去真空壓力之容器結構及導致容 裔内壓为 V Μ '4- ' 法」’其概係係令該塑膠容器底壁形成 。下凸伸的凸部’於塑膠容器熱填充飲料及封蓋後利用機 、隹貝』膠今器底壁的凸部倒反為向内凸伸狀，藉此使塑 3 201247483 膠容器内壓力上昇，於塑膠容器内的飲料冷卻而縮小體積 後’使塑膠容器内壓力達到平衡，改善塑膠容器熱裝填飲 料及封蓋後’塑膠容器收縮而外形不佳的缺陷。 惟前述除去真空壓力之容器結構及導致容器内壓力上 昇的方法，雖可於封蓋後的塑膠容器内壓力達到平衡改 善塑膠容器熱裝填飲料、封蓋後，塑膠容器收縮而外形不 佳的缺陷。但是’該塑膠容器底壁形成向下凸伸的凸部為 能被推頂而倒反為向内凸伸狀之構造，其底壁厚度必須增 厚，因而不利於塑膠容器材料減量之發展趨勢。 【發明内容】 本發明之主要目的在於提供一種平衡熱裝填飲料瓶封 蓋冷卻後内壓力的方法及飲料瓶封蓋裝置，希藉此發明， 克服現有飲料瓶因減少塑料用量I而飲料瓶強度相對減少情 況下，無法抵消因熱充填冷卻形成的内壓而致外型不佳， 或為阻止飲料瓶熱充填冷卻變形，而於飲料瓶底壁設計出 可被推頂而倒反向内凸伸狀之凸部構造，使其底壁厚度增 厚而不利於塑膠容器材料減量等缺點。 為達成前揭目的，本發明所設計的平衡熱裝填飲料瓶 封蓋冷卻後内壓力的方法係包含以下步驟： 於熱裝填後塑膠飲料瓶的瓶口處提供一連通飲料瓶的 密閉空間； 通過所述密閉空間對塑膠飲料瓶注入加壓的無菌氣體 9 於密閉空間中’將瓶蓋封合於塑膠飲料瓶的瓶口，使 塑膠飲料瓶内壓力大於外部壓力，再脫離所述密閉空間送錾 4 201247483 出； 藉此，於塑膠飲料瓶冷卻，藉由塑膠飲料瓶所增壓的 内壓力回饋抵消飲料冷卻收縮的壓力差而平衡。 本發明另一設設計的飲料瓶封蓋裝置係包含： 封蓋轴，其底端具有一瓶蓋取置部； 一封蓋套筒，其内部具有-上下貫通的軸孔，所述軸 孔提供封蓋軸之瓶蓋取置部.可升降活動的氣密組設其中， 軸孔下段定義有一充氣區間，用以提供飲料瓶上端口伸入 其中’封蓋套筒設有一自外側面徑向連通充氣區間的注氣 孔’用以外接無菌空氣供氣源；以及 -環狀氣囊’係'套㈣封蓋套筒底部，所述環狀氣囊 具有一空氣注入口，所述空氣注入口係用以外接氣壓供應 源，使環狀氣囊充氣膨脹而於封蓋套筒底部處氣密的緊貼 飲料瓶外周面。 本藉由前揭平衡熱裝填飲料瓶封蓋冷卻後内壓力的方 法及飲料瓶封蓋裝置設計’其特點是：於熱裝填飲料後的 飲料瓶進行封蓋前，先對飲料航内注人高壓的無菌空氣增 壓，再進行飲料瓶的封蓋，使封蓋後飲料瓶因一併封存高 壓無菌空氣而適度的膨脹，待熱裝填飲料的飲料瓶於封蓋 後冷郃收縮而自然恢復原狀，如此即可避免飲料瓶瓶身因 冷卻收縮而產生凹陷現象，使封蓋後的飲料瓶具有較佳外 形，並藉此可在符合飲料瓶塑料使用量減少的發展趨勢下 ，在保持飲料瓶應有基本必需強度的厚度設計下，藉此平 衡熱裝填飲料瓶封蓋冷卻後内壓力的方法及飲料瓶封蓋裝 置6又计，使其能夠抵消飲料瓶因熱充填冷卻形成的内壓而 201247483 提供較佳外形飲料產品。 【實施方式】 如圖1所示，係揭示本發明平衡熱裝填飲料瓶封蓋冷 卻後内壓力的方法之一較佳實施例的流程圖，所述平衡熱 裝填飲料瓶封蓋冷卻後内壓力的方法係包含以下步驟： 於熱裝填後塑膠飲料瓶的瓶口處提供一連通飲料瓶瓶 内空間的密閉空間； 通過所述密閉空間對塑膠飲料瓶瓶内注入加壓的無菌 氣體； 於密閉空間中，將瓶蓋封合塑膠飲料瓶的瓶口，使塑 膠飲料瓶内壓力大於外部壓力而適度的膨脹’再令封蓋後 的塑膠飲料瓶脫離所述密閉空間送出，於本發明之較佳實 施例中，所述塑膠飲料瓶内壓力設定0 5psi(磅/平方英吋 )〜lpsi(磅/平方英吋）為佳； 藉此’於塑膠飲料瓶冷卻，藉由塑膠飲料瓶注入無菌 氣體所增壓的内壓力回饋抵消飲料冷卻收縮的壓力差而平 衡。 為實現前揭平衡熱裝填飲料瓶封蓋冷卻後内壓力的方 法，本發明進一步設計了一種飲料瓶封蓋裝置，如圖彳及 圖2所示，係揭示該飲料瓶封蓋裝置之一較佳實施例應用 於飲料自動填充機中之使用狀態圖，由圖中可以見及，所 述飲料瓶封蓋裝置1係裝設於飲料自動填充機的機台2上 ，所述飲料瓶封蓋裝置1係包含：一封蓋軸1 〇、一封蓋套 筒20及一環狀氣囊30，其中： 所述封蓋軸10係用於裝設在機台2的驅動裝置上， 201247483 封蓋軸10並可為驅動裝置帶動升降位移，所述封蓋轴1〇 底端具有一瓶蓋取置部11 ’用以取得瓶蓋及將瓶蓋套置於 飲料瓶的瓶口上。 所述封蓋套筒20内部具有—上下貫通的軸孔21，所 述軸孔21提供封蓋軸1〇之瓶蓋取置部μ可升降活動的 氣密組設其中，於軸孔21下段定義有—充氣區間211，用 以提供飲料瓶4上端瓶口伸入其中，封蓋套筒2〇設有一 自外側面徑向連通充氣區間211的注氣孔22，所述注氣孔 22用以外接無菌空氣供氣源。 所述環狀氣囊3〇係、套設於封蓋套筒2Q底部，用以環 套於飲料*瓦4外周面，所述環狀氣囊30具有一空氣注入 口 31 ’所述空氣注人口 31用料接氣壓供應源，使環狀 氣囊30可充氣膨脹而於封蓋套筒2〇底部處緊貼飲料瓶上 段外周面呈氣密狀態。 斤示所述封蓋套筒20底部形成一套接部23 $供壤狀I囊30套設其外周面，於環狀氣囊扣外環周 :叹有-護套24予以保護’使環狀氣囊3〇内環周面的部 为顯露於封蓋套筒2〇盥鳟奈^ k 八姜套32外，且足以在環狀氣囊 充氣㈣後可緊貼飲料觀上段外周面呈氣密狀態。 本發明飲料瓶封蓋裝置彳應用於飲料自動填充機後， 於使用時，如® 4至圖7所示，係驅動飲料瓶封蓋裝置， Γ=10向下移動’以瓶蓋取置部11下降至封蓋套筒 底轉得—瓶蓋3,接續令封蓋軸10與20-同下降， :瓶盖取置部11及其底部的觀蓋3位於封蓋套筒2〇之充 氣區間211 f· 士 a 《兄 上方，使封蓋套筒2〇底部套設於—已裝填飲 201247483 料的飲料瓶4上端外圍，另對封蓋套筒2〇底部外圍的環 狀氣囊30充氣膨脹而於封蓋套筒2Q底部處緊貼飲料瓶4 上4又外周®呈氣密狀態’而對飲料瓶提供—密閉的空間。 接續，經由封蓋套筒20的注氣孔22注入加壓的無菌 空氣至充氣區F曰 1 211以及飲料瓶4内後停止，使飲料瓶4 内的内壓力大於外部壓力而適度的膨脹再驅動封蓋軸 下降，將瓶蓋3套接封合飲料瓶4的瓶口，之後，令飲料 瓶封蓋裝置1的封蓋軸1〇以及具有環狀氣囊3〇的封蓋套 筒20上升’移出飲料瓶4，再接續另一飲料瓶的封蓋作業 〇 則述封蓋後的飲料瓶於冷卻後，是藉由飲料瓶注入無 菌氣體所增壓的内壓力回饋抵消飲料冷卻收縮的壓力差而 平衡壓力’使飲料瓶自然恢復原&，如此即可避免飲料瓶 瓶身因冷卻收縮而產生凹陷現象，使封蓋後的飲料瓶具有 較佳外形。 以上所述，僅是揭示本發明之較佳實施例，並非對本 心月作任何形式上的限制，任何所屬技術領域中具有通常 識者在不脫離本發明所提出的技術特徵的範圍内，利用 本發月所揭不技術内容所作出局部更動或修飾的等效實施 例，均仍屬於本發明技術特徵的範圍内。 【圖式簡單說明】 圖1疋本發明平衡熱裝填飲料瓶封皇冷卻後内壓力的 方法之流程圖。 圖2是本發明飲料瓶封蓋裝置之一較佳實施例應用於 飲料自動填充機的使用狀態圖。 201247483 圖3疋圖2所示飲料瓶封蓋裝置較佳實施例應用於飲 料自動填充機中的局部放大示意圖。 圖4疋圖2所示飲料瓶封蓋裝置的使用狀態圖（一）。 11 5 =圖2所示飲料瓶封蓋裝置的使用狀態圖（二）。 =圖2所不飲料瓶封蓋裝置的使用狀態圖（三）。 圖2所不飲料瓶封蓋裝置的使用狀態圖(四）。 【主要元件符號說明】 2機台 4飲料瓶 11瓶蓋取置部 21軸孔 22注氣孔 24護套 31空氣注入口 飲料瓶封蓋裝置 3瓶蓋 1〇封蓋軸 20封蓋套筒 211充氣區間 &套接部 30環狀氣囊201247483 VI. Description of the Invention: [Technical Field] The present invention relates to a method for capping a beverage bottle and an automatic sealing mechanism for a beverage bottle, and more particularly to a method for balancing the internal pressure of a hot-filled beverage bottle cap after cooling and a beverage Bottle capping device. [Prior Art] The existing beverage market has developed a variety of products such as tea beverages, and is packaged in beverage bottles for consumers to purchase. For example, when a tea beverage is filled or capped by an automated beverage automatic filling machine, it is generally carried out by means of hot filling, that is, the temperature of the tea beverage is higher than room temperature in the state where the tea beverage is not cooled down to room temperature. That is, it is filled in a plastic beverage bottle (for example, a PET beverage bottle), and then the bottle cap sealing step of the beverage bottle is followed by the output. However, in order to reduce the amount of plastic bottles and reduce the cost of plastic bottles, the strength of the rfM plastic knee bottle is relatively thin, so that the beverage bottle automatic filling machine performs hot filling and capping of the beverage on the beverage view. After the plastic beverage bottle is placed and lowered to room temperature, it is easy to make the plastic bottle lose the volume in the bottle after cooling and the volume of the beverage is reduced. The thickness of the plastic bottle is thin, and the plastic bottle shrinks. The appearance of a sag is such that the shape of the beverage bottle is poor and can affect the sale of the bottled beverage. In order to solve the problem of the beverage bottle being capped after the capping of the hot-filled beverage bottle, the problem of the shrinkage of the beverage bottle due to cooling shrinkage has been proposed, such as China's certificate number No. 1310751. . The "container structure that removes vacuum pressure and causes the internal pressure of the container to be V Μ '4- 'method", which is not disclosed in the patent case, is to form the bottom wall of the plastic container. The convex portion of the lower convex portion is inwardly convex when the plastic container is filled with the beverage and the cover is closed by the convex portion of the bottom wall of the machine and the mussel, thereby making the pressure inside the plastic container of the plastic container 201272483 Ascending, after the beverage in the plastic container is cooled and reduced in size, the pressure in the plastic container is balanced, and the plastic container is heated and filled, and the plastic container shrinks and the shape is poor. However, the above-mentioned structure for removing the vacuum pressure and the method for causing the pressure inside the container to rise can balance the pressure in the plastic container after the capping, and the defect that the plastic container shrinks and the shape is poor after the plastic container is filled with the beverage and the cap is sealed. . However, the bottom wall of the plastic container is formed with a downwardly convex portion which can be pushed up and inverted to be inwardly convex. The thickness of the bottom wall must be thickened, which is not conducive to the development trend of plastic container material reduction. . SUMMARY OF THE INVENTION The main object of the present invention is to provide a method for balancing the internal pressure of a hot-filled beverage bottle cap after cooling, and a beverage bottle capping device, which can be used to overcome the existing beverage bottle by reducing the amount of plastic I and the strength of the bottle. In the case of relative reduction, it is impossible to offset the internal pressure caused by the hot filling and cooling, and the shape is not good, or to prevent the beverage bottle from being hot-filled and cooled, and the bottom wall of the beverage bottle is designed to be pushed up and inverted. The convex structure of the protrusion shape makes the thickness of the bottom wall thicker, which is disadvantageous for the reduction of the material of the plastic container. In order to achieve the foregoing object, the method for balancing the internal pressure of the hot-filled beverage bottle cap after cooling comprises the following steps: providing a sealed space for connecting the beverage bottle at the mouth of the plastic beverage bottle after the hot filling; The sealed space injects pressurized aseptic gas into the plastic beverage bottle 9 in a sealed space, 'sealing the cap to the bottle mouth of the plastic beverage bottle, so that the pressure inside the plastic beverage bottle is greater than the external pressure, and then leaving the sealed space to send錾 4 201247483 out; thereby, the plastic beverage bottle is cooled, and the internal pressure feedback pressurized by the plastic beverage bottle counterbalances the pressure difference of the cooling contraction of the beverage. Another design of the beverage bottle capping device of the present invention comprises: a capping shaft having a capping portion at a bottom end thereof; a cap sleeve having a shaft hole vertically penetrating therein, the shaft hole Providing a capping portion of the capping shaft. A gas-tight group capable of lifting and lowering activities, wherein a lower section of the shaft hole defines an inflation section for providing a port on the beverage bottle into which the capping sleeve is provided with an outer side diameter An air supply source for externally connected to the air injection hole of the communication inflation zone; and an annular air bag 'four' cover the bottom of the sleeve, the annular air bag having an air injection port, the air injection port The annular airbag is inflated by an external pneumatic supply source and is airtightly attached to the outer peripheral surface of the beverage bottle at the bottom of the cover sleeve. The method for pre-cooling the internal pressure of the hot-filled beverage bottle cap after cooling and the design of the beverage bottle capping device are characterized in that: before the cap bottle of the hot-filled beverage is capped, the beverage is injected into the bottle. The high-pressure sterile air is pressurized, and then the cover of the beverage bottle is closed, so that the beverage bottle after the capping is properly expanded due to the high-pressure sterile air being sealed together, and the beverage bottle to be filled with the hot beverage is cooled and contracted after the capping and naturally recovers. The original shape, so as to avoid the depression of the bottle body due to cooling shrinkage, so that the bottle after the capping has a better shape, and thereby can maintain the beverage under the trend of reducing the plastic use of the beverage bottle. The bottle should have a thickness of substantially necessary strength, thereby balancing the method of cooling the internal pressure of the beverage bottle cap after cooling and the beverage bottle capping device 6 to make it possible to offset the internal pressure of the beverage bottle due to hot filling and cooling. And 201247483 provides better shape beverage products. [Embodiment] As shown in FIG. 1, a flow chart of a preferred embodiment of a method for balancing the internal pressure of a hot-filled beverage bottle cap after cooling is disclosed. The balance hot-filled beverage bottle cap is cooled after the internal pressure. The method comprises the steps of: providing a sealed space for connecting the inner space of the beverage bottle to the bottle mouth of the plastic beverage bottle after the hot filling; injecting pressurized sterile gas into the plastic beverage bottle through the sealed space; In the space, the bottle cap is sealed with the bottle mouth of the plastic beverage bottle, so that the pressure inside the plastic beverage bottle is greater than the external pressure and moderately expanded, and then the plastic beverage bottle after the capping is released from the confined space, which is more in the present invention. In a preferred embodiment, the pressure inside the plastic beverage bottle is set to 0 psi (pounds per square inch) to 1 psi (pounds per square inch); thereby cooling the plastic beverage bottle and injecting the plastic beverage bottle into the sterile container. The internal pressure feedback by the gas is balanced to counteract the pressure difference of the cooling contraction of the beverage. In order to realize the method for uncovering the internal pressure of the hot-filled beverage bottle cap after cooling, the present invention further designs a beverage bottle capping device, as shown in FIG. 2 and FIG. 2, which discloses one of the beverage bottle capping devices. A preferred embodiment is applied to a usage state diagram in a beverage automatic filling machine. As can be seen from the figure, the beverage bottle capping device 1 is mounted on a machine 2 of a beverage automatic filling machine, the beverage bottle closure The device 1 comprises: a cover shaft 1 〇, a cover sleeve 20 and an annular air bag 30, wherein: the cover shaft 10 is used for mounting on the driving device of the machine 2, 201247483 The shaft 10 can drive the lifting displacement for the driving device. The bottom end of the sealing shaft 1 has a capping portion 11' for taking the cap and placing the cap on the bottle mouth of the beverage bottle. The cover sleeve 20 has a shaft hole 21 extending through the upper and lower sides, and the shaft hole 21 provides a gas-tight assembly in which the capping portion 1 of the cap shaft 1 is movable up and down, and the lower portion of the shaft hole 21 An inflation section 211 is defined for providing the upper end of the beverage bottle 4 into which the bottle opening extends. The cover sleeve 2 is provided with a gas injection hole 22 radially communicating with the inflation section 211 from the outer side surface, and the gas injection hole 22 is externally connected. Sterile air supply. The annular airbag 3 is sleeved on the bottom of the cover sleeve 2Q for enclosing the outer peripheral surface of the beverage * tile 4. The annular airbag 30 has an air injection port 31'. The air supply source is connected to the air supply, so that the annular airbag 30 can be inflated and airtight at the bottom of the cover sleeve 2 at the outer peripheral surface of the upper portion of the beverage bottle. The bottom of the capping sleeve 20 is formed with a set of joints 23 for the outer peripheral surface of the bag-like I bag 30, and the outer ring of the annular airbag buckle: the sling-sheath 24 protects the ring The portion of the inner surface of the inner ring of the airbag 3 is exposed outside the cover sleeve 2, and is sufficient to be in an airtight state when the annular airbag is inflated (four). . The beverage bottle capping device of the present invention is applied to a beverage automatic filling machine, and when used, as shown in FIG. 4 to FIG. 7, the beverage bottle capping device is driven, and Γ=10 moves downwards to take the capping portion. 11 is lowered to the bottom of the cap sleeve, and the cap 3 is connected, and the cap shafts 10 and 20 are successively lowered. The cap take-up portion 11 and the bottom cover 3 are located in the cap sleeve 2 Section 211 f·士 a “Before the brother, the cover sleeve 2〇 is placed on the bottom of the upper end of the beverage bottle 4 that has been filled with 201247483, and the annular airbag 30 around the bottom of the cover sleeve 2〇 is inflated. Expanded to the bottom of the capping sleeve 2Q against the beverage bottle 4 4 and the outer periphery® is airtight' to provide a sealed space for the beverage bottle. Then, the pressurized aseptic air is injected into the inflation zone F曰1 211 and the beverage bottle 4 through the gas injection hole 22 of the cap sleeve 20, and then the internal pressure in the beverage bottle 4 is greater than the external pressure and moderately expanded and then driven. The capping shaft is lowered, and the cap 3 is sleeved to seal the bottle mouth of the beverage bottle 4, and then the capping shaft 1 of the beverage bottle capping device 1 and the capping sleeve 20 having the annular balloon 3〇 are raised. The beverage bottle 4 is removed, and then the sealing operation of the other beverage bottle is continued. After the capping beverage bottle is cooled, the pressure difference between the beverage and the internal pressure of the beverage bottle is used to counteract the pressure difference of the cooling contraction of the beverage. The balance pressure 'returns the beverage bottle to the original & naturally, so as to avoid the depression of the bottle body due to cooling shrinkage, so that the bottle after the cap has a better shape. The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any one of ordinary skill in the art can use the present invention without departing from the technical features of the present invention. Equivalent embodiments of the local modifications or modifications made by the technical content disclosed in the disclosure are still within the scope of the technical features of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a flow chart showing a method for balancing the internal pressure of a hot-filled beverage bottle after cooling. Fig. 2 is a view showing the state of use of a preferred embodiment of the beverage bottle capping device of the present invention applied to a beverage automatic filling machine. 201247483 Fig. 3 is a partially enlarged schematic view showing the preferred embodiment of the beverage bottle capping device shown in Fig. 2 applied to a beverage automatic filling machine. Figure 4 is a view showing the state of use of the beverage bottle capping device shown in Figure 2 (1). 11 5 = the state of use of the beverage bottle capping device shown in Figure 2 (2). = Figure 2 shows the state of use of the beverage bottle capping device (3). Figure 2 shows the state of use of the beverage bottle capping device (4). [Main component symbol description] 2 machine 4 beverage bottle 11 bottle capping portion 21 shaft hole 22 gas injection hole 24 sheath 31 air injection port beverage bottle capping device 3 bottle cap 1 〇 capping shaft 20 capping sleeve 211 Inflatable section & socket 30 annular airbag