201121766 六、發明說明： 【發明所屬之技術領域】 [0001] 本發明係有關一種射出成型機之射出終點控制方法尤 指一種能有效控制射料孔内的塑料殘留量在容許範圍内 ，以確保射出品質者。 【先前技術】 [0002]目前所使用的立式或臥式射出成型機，主要包括有機台 、夾模組件、驅動組件及射出組件四大部分。其中，驅 動組件及射出組件可相對於二個導執上水平移動。而射 〇 出組件則設有一料管，料管内同軸容置一射出軸，該射 出轴可受油壓或電動舰馬達的驅動而轉動及前後移動 [_在塑料射出成型時，射出組件的料管前端之射嘴係抵緊 於爽模組件的模具的洗口，並藉由轉馬達或電動飼服 馬達以驅動射出轴，使料管内的塑料混練推向前方而 射出轴藉由反作用力向後退一段距離後，再向前以擠廢 ❹ 料管内的塑料，使料管内的㈣以料射人夾模組件的 模具内，使塑料成型。 [0004] 098145574 在上述射出成型過程中，由於射出塑料需要很高的壓力 ’相對的會使射出軸承受很大的反作用力，因此，射出 袖必須具有很高的強度，然而製造高強度、高精度的射 出輛需要較高的花費。且該射出轴係為〜長形螺桿塑 料係在各牙峄與牙谷之間流動，而為使塑料在擠壓射出 及儲料的過程中皆能流動順暢，射出輛的直徑即不能太 小，如此一來，就限制了射出產品的尺寸，不容易射出 0982077831-0 表單編软ΑΟίοι 第3頁/共19頁 201121766 精細及微小之物件。 剛目此，創作人即設計了一種可更換射出組件之射出成塑 機a’如第7圖所示，主要包括一機台a卜機台ai的上端 設有夹模組和2、驅純㈣、儲料組件^以及射出組 件以，其中，失模組件，固定於機台al_L，驅動組件 83及儲料組件以係與夾模組件似目對移動。而如第8圖所 示’該儲料組件a4係包括—料管b，料管b内設有儲料轴 M ’以做為儲料使用’且料管b的—端以一角度延伸一凸 出部c ’凸出部c設有連通軸孔的射料㈣。而射出組件 a5係與凸出部c以可拆裝之方式連結’射出組件的一端 〇 設有射出軸d ’射出軸d係以可相對直線移動的方式容置 於射料孔dl内，且該射出組件35連接一動力源e，藉以在 儲料軸bl推壓塑料進入射料孔dl内後，每以動力源e驅動 射出轴’擠壓塑料射入夾模組件a2内。 [0006]藉此，確實可有效改良習用射出成型機的問題。惟，此 種射出成型機在射出成型的過雇中，若儲料的設定錯誤 ，而使推壓進入射料孔内的塑料比所要射入夾模組件内 的塑料還多’在射出軸撥壓塑料射入夾模組件内後，仍 ϋ 會有殘留的塑料囤積在射料孔内’而若殘留的塑料太多 且一直留存在射料孔内時，則容易讓塑料劣化，而造成 射出品質的下降。 [0007] 上述殘留塑料囤積的問題同樣會形成在料管内同軸容置 射出轴的射出成型機上，其雖然不會讓塑料劣化而影響 射出品質，但當射出成型機工作一段時間，並停止作業 後，殘留在料管前端的塑料將會因冷卻而硬化。當重啟 098145574 表單編號Α0101 第4頁/共19頁 0982077831-0 201121766 另一射出程序，並重新加熱時，由於偵測器並無法準確 偵測到殘留塑料是否完全熔化，因此，容易會在殘留塑 料的内部尚未溶化時即開始進行射出動作，而造成射出 軸的損壞，或射出後的部份產品品質不良。 [0008] 有鑑於此，為了改善上述之缺點，使射出成型機之射出 終點控制方法能有效控制射料孔内的塑料殘留量在容許 範圍内，以確保射出品質，發明人積多年的經驗及不斷 的研發改進，.遂有本發明之產生。 【發明内容】 〇 [0009] 本發明之主要目的在提供一種射出成型機之射出終點控 制方法，藉由以偵測器偵測射出軸實際射出終點位置的 值，再經由控制器的比較運算以控制射出軸向後移動的 距離，從而使射出軸實際射出終點位置能控制在預定範 圍内之步驟，俾能在每一次射出程序中，皆能射出大部 份的塑料，以降低塑料的殘留量，從而確保射出產品的 品質。 ^ [0010] 為達上述發明之目的，本發明所設之射出成型機之射出 終點控制方法，包括下列步驟：a. —設定步驟：係提供 一控制器以設定射出軸在射出起點位置的值及預定射出 終點位置的值；b. —偵測步驟：係在射出軸以一射出行 程射出塑料使成型一物件後，再以一偵測器偵測射出軸 實際射出終點位置的值；以及c. 一修正步驟：係在射出 軸實際射出終點位置的值大於預定射出終點位置的值時 ，以控制器修正射出軸向後移動的距離，並在下一模時 ，讓射出軸進行再一次射出，直到偵測器所偵測到的射 098145574 表單編號A0101 第5頁/共19頁 0982077831-0 201121766 出轴只際射出終點位置的值小於或等於預定射出終點位 置的值時’即完成控制器的修正動作。 [0011] [0012] [0013] 實施時，該射出軸的射出動作係可藉由時間的設定直接 進订射出，或藉由偵測塑料壓力以决定射出的量，或藉 由電子位置尺的量測以決定射出量的控制。其中，當射 出軸的射出動作係藉由電子位置尺的量測以決定射出量 的控制時，在設定步驟中，該控制器係同時設定一填充 階段轉保壓階段位置的值。而在修正步驟中，該射出軸 向後移動的距離=射出軸的射出行程+預定射出終點位 置的值一射出軸實際射出終點位置的值。 為便於對本發明能有更深入的瞭解，茲詳述於後： 【實施方式】 請參閱第1、2圖所示，係為一種儲料組件2與射出組件3 呈一角度配置的射出成型機1。其中，該儲料組件2包括 一料管21 ’料管21内設有一軸孔22 \供容丨納一螺旋狀的 儲料軸23 ’以做為儲料使用’且該料管21的一端連結一 轉接頭24，該轉接頭24設有一連通軸孔22的射料孔25。 而射出組件3係與轉接頭24連結’射出組件3的内部形成 一内軸孔31，以供活塞32—端的射出轴33穿入，而經由 液壓油供應系統4的推動活塞32，則可讓射出軸33在内軸 孔31中呈直線往復移動。實施時，所述的射出軸33亦可 以伺服馬達驅動。藉此，當儲料軸23旋轉以推壓塑料進 入射料孔25内後，再以液壓油供應系統4或伺服馬達驅動 射出軸33，即可將塑料射入模具内。而上述液壓油供應 系統4或伺服馬達係經由一 PLC可程式控制器5以控制射出 098145574 表單編號A0101 第6頁/共19頁 0982077831-0 201121766 轴3 3的射出行程。 [0014] 請參閱第3圖所示，係為本發明射出成型機之射出終點控 制方法之較佳實施例，主要包括一設定步驟、一偵測步 驟以及一修正步驟。如第4圖所示，係為上述設定及偵測 步驟之示意圖。其中，該設定步驟係以控制器5設定射出 軸33在射出起點位置61的值及預定射出終點位置62的值 :該偵測步驟係在射出軸33前進一射出行程63以射出塑 料使成型一物件後，再以一偵測器7偵測射出軸33實際射 出終點位置64的值；而如第5圖所示，該修正步驟係在射 〇 出軸33實際射出終點位置64的值大於預定射出終點位置 62的值時，以控制器5修正射出軸33向後移動的距離65， 並在修正後的下一模中，讓射出轴33進行再一次或多次 的射出，直到偵測器7所偵測到的射出轴33的實際射出終 點位置64的值小於或等於預定射出終點位置62的值時， 即完成控制器5的修正動作。 [0015] 實施時，所述設定步驟中的射出轴33射出起點位置61的 值=射出軸的射出行程63 +射出軸實際射出終點位置64 ❹ 的值。該射出軸33射出起點的位置61係表示塑料已推壓 進入内軸孔31内，但射出軸33尚未進行射出動作的位置 :而射出軸33的實際射出終點的位置則表示射出轴33在 射出成型過程中，向前移動到最小的位置。上述各個位 置點係以電子位置尺量測所得，該電子位置尺做為偵測 器7。 [0016] 舉例而言，控制器5針對某一產品所設定的預定射出終點 位置的值為5mm，射出軸33射出起點位置的值為50mm， 098145574 表單編號A0101 第7頁/共19頁 0982077831-0 201121766 而在射出後，偵測器7所量測到射出軸33實際射出終點位 置的值為20mm，經過控制器5的運算後，射出軸33的射出 行程即為30 mm。 [0017] 由於該射出軸33實際射出終點位置64的值比預定射出終 點位置62的值大，即需以控制器5運算修正。修正公式為 :射出軸向後移動的距離65 =射出軸的射出行程63 +預 定射出終點位置62的值一射出軸實際射出終點位置64的 值。承上例，該射出軸33的射出行程為30 mm，預定射出 終點位置的值為5mm，射出軸33實際射出終點位置的值為 20mm，因此，射出軸33向後移動的距離= 30 + 5 — 20 = 15 (mm)。亦即，經過控制器5修正後之射出軸33向後移 動的距離為15mm。而液壓油供應系統4或伺服馬達在接到 控制器5的指令後，即驅動射出軸3 3向後移動1 5mm，此時 ，偵測器7所量測到的射出軸33射出起點位置61的值為 35mm 〇 [0018] 在下一模時，射出轴33即以修正後的位置進行再一次射 出，由於射出轴33的射出行程為30 mm，再一次射出之後 ，射出軸33實際射出終點位置64的值若為5nun或小於5mm ，即完成控制器5的修正動作；但若是射出軸33實際射出 終點位置64的值仍大於5mm，控制器5即會進行再一次修 正或多次修正，直到偵測器7所偵測到的射出軸33的實際 射出終點位置64的值小於或等於預定射出終點位置62的 值為止。 實施時，該射出軸33係藉由控制器5所設定的時間進行射 出動作，所述的射出軸33亦可藉由壓力偵測器所偵測内 098145574 表單編號A0101 第8頁/共19頁 098 [0019] 201121766 〇 [0020] [0021] Q [0022] 軸孔31内的塑料壓力後，再由控制器5決定是否繼續射出 ’或藉由電子位置尺的位置量測以決定是否繼續射出。 其中’如第6圖所示，當射出軸33的射出動作係藉由電子 位置尺的量測以決定射出量的控制時’由於該射出行程 63包括一填充階段631及一保壓階段632 ’因此，在設定 步驟中，該控制器5係設定一填充階段轉保壓階段位置66 的值。而在修正步驟中，則會同時對填充階段轉保壓階 段位置66的值進行修正，以使射出轴33維持固定的射出 行裎6 3。 .... ..... 實施時’本發明亦可在應用在料管内同轴容置射出轴， 並以射出軸進行儲料及射出的射出成型機上。 如此一來，本發明即可適用在各種不同妁射出成型機， 在每一次射出程序中，皆能將射出轴33的實際射出終點 位置64控制在一定的範圍内，以射出大部份塑料，使有 效降低内轴孔31内的塑料殘留章:;，並確保#出產品的品 質。 , -/ : cii 〜 综上所述，依上文所揭示之内容;’本發明確可達到發明 之預期目的，提供一種能有效控制射料孔内的塑料殘留 量在容許範圍内’以確保射出品質之射出成型機之射出 終點控制方法，極具產業上利用之價值，爰依法提出發 明專利申請。 【圖式簡單說明】 第1圖係為應用本發明所應用之一種射出成型機在射出前 之部份剖面圖。 098145574 表單編號A0101 第9頁/共19頁 °982077831-〇 [0023] 201121766 [0024] 第2圖係為應用本發明所應用之一種射出成型機在射出後 之部份剖面圖。 [0025] 第3圖係為本發明之較佳實施例之步驟流程圖。 [0026] 第4圖係為本發明之較佳實施例之設定及偵測步驟之示意 圖。 [0027] 第5圖係為本發明之較佳實施例之修正步驟之示意圖。 [0028] 第6圖係為本發明之較佳實施例之射出行程包括一填充階 段及一保壓階段時之示意圖。 [0029] 第7圖係為習用可更換射出組件之射出成型機之侧視圖。 [0030] 第8圖係為習用可更換射出組件之射出成型機之部份剖面 圖。 【主要元件符號說明】 [0031] 射出成型機1儲料組件2 [0032] 料管21軸孔2 2 [0033] 儲料軸23轉接頭24 [0034] 射料孔25射出組件3 [0035] 内轴孔31活塞32 [0036] 射出軸33液壓油供應系統4 [0037] 控制器5射出起點位置61 [0038] 預定射出終點位置62射出行程63 [0039] 填充階段631保壓階段632 098145574 表單編號A0101 第10頁/共19頁 0982077831-0 201121766 [0040] 實際射出終點位置64射出轴向後移動的距離65 [0041] 填充階段轉保壓階段位置66偵測器7 [0042] 可更換射出組件之射出成型機a機台al [0043] 夾模組件a 2驅動組件a 3 [0044] 儲料組件a4射出組件a5 [0045] 料管b儲料軸bl [0046] 凸出部c射料孔cl 〇 [0047] 射出轴d射料孔d 1 [_] 動力源e ο201121766 VI. Description of the Invention: [Technical Field] [0001] The present invention relates to an injection end point control method for an injection molding machine, and more particularly to an effective control of the amount of plastic residue in the injection hole within an allowable range to ensure Shoot out the quality. [Prior Art] [0002] The vertical or horizontal injection molding machine currently used mainly includes an organic table, a clamping unit, a driving unit and an injection unit. The drive assembly and the injection assembly are horizontally movable relative to the two guides. The shooting and discharging assembly is provided with a material tube, and an injection shaft is coaxially accommodated in the material tube. The injection shaft can be rotated by the hydraulic pressure or the electric motor of the electric motor and moved forward and backward [_ when the plastic injection molding, the material of the injection component The nozzle at the front end of the tube abuts against the washing of the mold of the cool mold assembly, and drives the injection shaft by a rotary motor or a electric feeding motor, so that the plastic mixing in the material tube is pushed forward and the injection shaft is reacted by the reaction force. After retreating a certain distance, the plastic in the tube is squeezed forward, so that the plastic in the tube is molded into the mold of the mold clamping assembly. [0004] 098145574 In the above injection molding process, since the injection of the plastic requires a high pressure 'relatively, the injection bearing is subjected to a large reaction force, therefore, the injection sleeve must have a high strength, but the manufacture of high strength, high Accurate shots require a higher cost. Moreover, the injection shaft is a long screw plastic which flows between the gums and the valleys, and the diameter of the injection vehicle can not be too small in order to make the plastic flow smoothly during the process of extrusion injection and storage. In this way, it limits the size of the product to be shot, and it is not easy to shoot 0982077831-0. The form is softly ΑΟίοι Page 3 of 19 201121766 Fine and tiny objects. Just like this, the creator designed an injection molding machine a' of a replaceable injection assembly, as shown in Fig. 7, which mainly includes a machine table, a top of the machine ai, a clamping module and a second. (4) The material storage assembly and the injection assembly, wherein the mold loss assembly is fixed to the machine base a_L, and the drive assembly 83 and the storage assembly are moved in a direction similar to the clamp assembly. As shown in Fig. 8, the storage assembly a4 includes a material tube b, the material storage tube B is provided with a storage shaft M' for use as a storage material, and the end of the material tube b extends at an angle. The projection c' projecting portion c is provided with a projecting material (four) that communicates with the shaft hole. The injection unit a5 and the protruding portion c are detachably coupled to each other. The one end of the injection unit is provided with an injection axis d′. The emission axis d is accommodated in the injection hole d1 so as to be relatively linearly movable. The injection assembly 35 is connected to a power source e, so that after the storage shaft bl pushes the plastic into the injection hole dl, the injection shaft 'extrusion plastic is injected into the clamping assembly a2 every time the power source e drives the injection shaft e. [0006] Thereby, the problem of the conventional injection molding machine can be effectively improved. However, in the over-employment of the injection molding machine, if the setting of the storage material is wrong, the plastic pushed into the injection hole is more than the plastic to be injected into the clamping assembly. After the plastic is injected into the clamping module, there will still be residual plastic accumulated in the injection hole. If the residual plastic is too much and remains in the injection hole, the plastic is easily deteriorated. Causes a drop in the quality of the shot. [0007] The problem of the above-mentioned residual plastic hoarding is also formed on the injection molding machine in which the injection shaft is coaxially accommodated in the material tube. Although the plastic is not deteriorated and the injection quality is not affected, the injection molding machine is operated for a certain period of time, and the operation is stopped. After that, the plastic remaining on the front end of the tube will harden due to cooling. When restarting 098145574 Form No. 1010101 Page 4 / Total 19 Page 0982077831-0 201121766 Another injection program, and reheating, because the detector can not accurately detect whether the residual plastic is completely melted, it is easy to stay in the plastic When the inside of the interior is not melted, the injection operation is started, and the injection shaft is damaged, or some of the products after the injection are of poor quality. [0008] In view of the above, in order to improve the above-mentioned shortcomings, the injection end point control method of the injection molding machine can effectively control the plastic residual amount in the injection hole to be within the allowable range to ensure the injection quality, and the inventor has accumulated many years of experience and Continuous research and development improvements, and the production of the present invention. SUMMARY OF THE INVENTION [0009] The main object of the present invention is to provide an injection end point control method for an injection molding machine, by detecting the value of the actual injection end position of the injection axis by the detector, and then performing a comparison operation via the controller. Controlling the distance from the axial direction of the injection, so that the actual exit end position of the injection shaft can be controlled within a predetermined range, and most of the plastic can be injected in each injection program to reduce the residual amount of plastic. To ensure the quality of the injected product. [0010] For the purpose of the above invention, the injection end point control method of the injection molding machine of the present invention comprises the following steps: a. - setting step: providing a controller to set the value of the injection axis at the exit starting position And the value of the predetermined end position of the injection; b. - the detecting step: after the injection shaft ejects the plastic by an injection stroke to form an object, and then detects the value of the actual exit end position of the injection shaft by a detector; A correction step: when the value of the actual injection end position of the injection axis is greater than the value of the predetermined injection end position, the controller corrects the distance moved after the injection axis is moved, and in the next mode, the injection axis is again injected. Until the detector detects the shot 098145574 Form No. A0101 Page 5 / Total 19 pages 0982077831-0 201121766 When the value of the exit end position is less than or equal to the value of the predetermined exit end position, the controller is completed. Correct the action. [0013] [0013] In the implementation, the shooting action of the shooting shaft can be directly ordered by the time setting, or by detecting the plastic pressure to determine the amount of injection, or by the electronic position gauge Measurement to determine the control of the amount of shot. Here, when the injection operation of the injection shaft is controlled by the measurement of the electronic position gauge to determine the injection amount, in the setting step, the controller simultaneously sets the value of the position of the filling phase to the pressure maintaining phase. In the correction step, the distance at which the injection axis moves backward = the value of the injection stroke of the injection axis + the position of the predetermined injection end position, and the value of the actual injection end position of the injection axis. In order to facilitate a better understanding of the present invention, it will be described in detail later: [Embodiment] Please refer to the first and second figures, which is an injection molding machine in which the storage assembly 2 and the injection assembly 3 are disposed at an angle. 1. Wherein, the storage assembly 2 includes a material tube 21'. The material tube 21 is provided with a shaft hole 22, a storage shaft 23' for accommodating a spiral shape, and is used as a storage material, and one end of the material tube 21 A joint 24 is connected, and the joint 24 is provided with a shot hole 25 that communicates with the shaft hole 22. The injection assembly 3 is coupled to the adapter 24. The interior of the injection assembly 3 forms an inner shaft hole 31 for the injection shaft 33 of the piston 32-end to penetrate, and the push piston 32 of the hydraulic oil supply system 4 can be used. The injection shaft 33 is linearly reciprocated in the inner shaft hole 31. In practice, the injection shaft 33 can also be driven by a servo motor. Thereby, when the stocker shaft 23 is rotated to push the plastic into the incident hole 25, the injection shaft 33 is driven by the hydraulic oil supply system 4 or the servo motor to inject the plastic into the mold. The hydraulic oil supply system 4 or the servo motor is controlled by a PLC programmable controller 5 to control the injection stroke of the 098145574 form number A0101 page 6 / 19 page 0982077831-0 201121766 axis 3 3 . [0014] Referring to FIG. 3, it is a preferred embodiment of the injection end point control method of the injection molding machine of the present invention, which mainly comprises a setting step, a detecting step and a correcting step. As shown in Fig. 4, it is a schematic diagram of the above setting and detecting steps. The setting step is to set the value of the injection axis 33 at the exit start position 61 and the predetermined exit end position 62 by the controller 5: the detecting step is to advance the injection stroke 63 on the injection shaft 33 to project the plastic to form a shape. After the object, the detector 7 detects the value of the actual exit end position 64 of the injection shaft 33. As shown in FIG. 5, the correction step is performed at the actual exit end position 64 of the shot output shaft 33. When the value of the end position 62 is emitted, the controller 5 corrects the distance 65 at which the injection shaft 33 moves backward, and in the corrected next mode, the injection shaft 33 is again emitted one or more times until the detector 7 When the detected value of the actual exit end position 64 of the exit shaft 33 is less than or equal to the value of the predetermined exit end position 62, the correcting operation of the controller 5 is completed. [0015] In the implementation, the value of the exit axis 33 in the setting step is the value of the exit position 63 of the injection axis + the actual exit end position 64 ❹ of the injection axis. The position 61 at which the exit axis 33 emits the starting point indicates that the plastic has been pressed into the inner shaft hole 31, but the injection shaft 33 has not yet been moved. The position of the actual exit end of the injection shaft 33 indicates that the injection shaft 33 is emitting. Move forward to the minimum position during the forming process. Each of the above-mentioned position points is measured by an electronic position scale as the detector 7. [0016] For example, the value of the predetermined exit end position set by the controller 5 for a certain product is 5 mm, and the value of the exit start position of the injection shaft 33 is 50 mm, 098145574 Form No. A0101 Page 7 / Total 19 Page 0982077831- 0 201121766 After the injection, the value of the actual exit end position of the injection shaft 33 measured by the detector 7 is 20 mm. After the calculation by the controller 5, the injection stroke of the injection shaft 33 is 30 mm. [0017] Since the value of the actual exit end position 64 of the exit shaft 33 is larger than the value of the predetermined exit end position 62, the correction is calculated by the controller 5. The correction formula is: the distance 65 after the injection axial movement: the injection stroke 63 of the injection shaft + the value of the predetermined injection end position 62 and the value of the injection end position 64 of the injection axis. According to the above example, the injection stroke of the injection shaft 33 is 30 mm, the value of the predetermined exit end position is 5 mm, and the value of the actual exit end position of the injection shaft 33 is 20 mm. Therefore, the distance at which the injection shaft 33 moves backward = 30 + 5 — 20 = 15 (mm). That is, the distance by which the injection shaft 33 corrected by the controller 5 is moved backward is 15 mm. After the hydraulic oil supply system 4 or the servo motor is commanded by the controller 5, the drive injection shaft 3 3 is moved backward by 15 mm. At this time, the injection shaft 33 measured by the detector 7 is emitted from the starting position 61. The value is 35 mm 〇[0018] In the next mode, the injection shaft 33 is again injected at the corrected position, and since the injection stroke of the injection shaft 33 is 30 mm, the injection shaft 33 is actually shot at the end position 64 after another shot. If the value is 5nun or less than 5mm, the correcting action of the controller 5 is completed; however, if the value of the actual shooting end position 64 of the shooting shaft 33 is still greater than 5 mm, the controller 5 will perform another correction or multiple corrections until the detection The value of the actual exit end position 64 of the exit shaft 33 detected by the detector 7 is less than or equal to the value of the predetermined exit end position 62. In the implementation, the injection shaft 33 performs an injection operation by the time set by the controller 5, and the injection shaft 33 can also be detected by the pressure detector. 098145574 Form No. A0101 Page 8 of 19 098 [0019] 201121766 〇[0020] [0022] Q [0022] After the plastic pressure in the shaft hole 31, the controller 5 determines whether to continue to emit ' or by the position measurement of the electronic position gauge to determine whether to continue to shoot . Wherein, as shown in Fig. 6, when the injection operation of the injection shaft 33 is controlled by the measurement of the electronic position gauge to determine the amount of injection, 'since the injection stroke 63 includes a filling stage 631 and a pressure holding stage 632' Therefore, in the setting step, the controller 5 sets the value of a filling phase to the pressure maintaining phase position 66. In the correction step, the value of the fill phase transfer pressure stage position 66 is simultaneously corrected so that the injection shaft 33 maintains a fixed exit line 6.3. The present invention can also be applied to an injection molding machine in which an injection shaft is coaxially accommodated in a material tube and stored and ejected by an injection shaft. In this way, the present invention can be applied to various different injection molding machines, and in each injection program, the actual injection end position 64 of the injection shaft 33 can be controlled within a certain range to emit most of the plastic. Effectively reduce the plastic residue in the inner shaft hole 31:; and ensure the quality of the product. , -/ : cii ~ In summary, according to the above disclosure; 'the invention can achieve the intended purpose of the invention, providing an effective control of the amount of plastic residue in the injection hole within the allowable range' to ensure The injection end point control method of the injection molding machine with high quality is of great value in industrial use, and the invention patent application is filed according to law. BRIEF DESCRIPTION OF THE DRAWINGS Fig. 1 is a partial cross-sectional view of an injection molding machine to which the present invention is applied before injection. 098145574 Form No. A0101 Page 9 of 19 °982077831-〇 [0023] [0024] Fig. 2 is a partial cross-sectional view of an injection molding machine to which the present invention is applied after injection. [0025] FIG. 3 is a flow chart showing the steps of a preferred embodiment of the present invention. Figure 4 is a schematic illustration of the steps of setting and detecting a preferred embodiment of the present invention. [0027] Figure 5 is a schematic illustration of the modification steps of a preferred embodiment of the present invention. Figure 6 is a schematic illustration of the preferred embodiment of the present invention with the injection stroke including a fill phase and a hold phase. [0029] Figure 7 is a side elevational view of an injection molding machine of a conventional replaceable injection assembly. [0030] Figure 8 is a partial cross-sectional view of an injection molding machine of a conventional replaceable injection assembly. [Main component symbol description] [0031] Injection molding machine 1 storage assembly 2 [0032] Feed tube 21 shaft hole 2 2 [0033] Storage shaft 23 adapter 24 [0034] Injection hole 25 injection assembly 3 [0035] Inner shaft hole 31 piston 32 [0036] Injection shaft 33 hydraulic oil supply system 4 [0037] Controller 5 injection starting position 61 [0038] predetermined injection end position 62 injection stroke 63 [0039] Filling stage 631 holding phase 632 098145574 Form No. A0101 Page 10/19 Page 0982077831-0 201121766 [0040] The actual exit end position 64 is emitted from the axial rearward movement distance [0041] The filling phase is transferred to the dwelling phase position 66 detector 7 [0042] Replaceable Injection molding machine a shooting unit a [0043] clamping assembly a 2 driving assembly a 3 [0044] storage assembly a4 injection assembly a5 [0045] material tube b storage shaft bl [0046] projection c Injection hole cl 〇 [0047] injection axis d injection hole d 1 [_] power source e ο
098145574 表單編號A0101 第11頁/共19頁 0982077831-0098145574 Form No. A0101 Page 11 of 19 0982077831-0