200824873 '九、發明說明： -【發明所屬之技術領域】 本發明係關於一種模具結構，特別係關於一種嵌入成 型模具之結構。 【先前技術】 於電子、汽車、電機、電器、儀器、儀錶、家電及通 訊等産品中，60%〜80%之零部件都需依靠模具成型，故 ,模具結構之設計及相關工藝已成爲工業生產之重要技術。 ( 於產品嵌入成型加工過程中，需將金屬工件放入模仁 後，再對模具合模以便注射熔融之塑膠，塑膠經冷卻後形 成一嵌有金屬片之塑膠産品。 惟，於生産過程中，常因金屬工件沒放入模具中便合 模注塑，從而對模具造成損傷，不僅嚴重影響加工速度， 而且降低加工效率。 【發明内容】 《 有鑒於此，本發明提供一種防止漏放金屬工件，提高 加工速度及工作效率之模具結構。 一種模具結構，其包括一模板，於該模板中固定有一 光纖感應器。 相杈習知技術，於模具中安裝有光纖感應器，該光纖 感應器可感應金屬工件是否於合模之前已經放入模具中、。 因此，只有當金屬工件已安裝到位，模具才能正常合模， 避免對模具造成之損傷，從而提高加工速度及工作效率。 【實施方式】 6 200824873 ^ 本發明提供一種模具結構，優選實施方式係關於一種 ^ 嵌入成型模具結構。 請參見圖1，該嵌入成型模具結構包括一動模板40及 一光纖感應器30，該光纖感應器30可固定於動模板40 内。一金屬工件50可嵌置於動模板40上。 該動模板40包括一模座402、一模仁404及一鑲件 406。該模座402大致呈立方體，其中央開有一矩形模穴 4022，於該模穴4022底面中央開有一階梯狀開孔4024。 f 於該模座402之一侧壁上開有一側孔4026，該側孔4026 與階梯狀開孔4024相連通。該模仁404可嵌入該模座402 之模穴4022中，並藉由螺釘（圖未示）與模座402彼此相 對固定連接。於該模仁404中心開有一大體爲長方形槽 4042,該槽4042之底部中心開有一通孔4044,該通孔4044 之轴線與階梯狀開孔4024之軸線對齊。該鑲件406大體爲 長方形，其可嵌置於長方形槽4042中，該鑲件406用以固 定金屬工件50並成型産品之一端面。於該鑲件406中心開 ί 有一通孔4062，於裝配時，該通孔4062與模仁404之通 孔4044相互連通並且軸線相互重合。 請參見圖2,該光纖感應器30依次包括一光纖頭302、 一固定部304、一傳感線306及一光纖放大器308。固定部 304之一端與光纖頭302相連接，該固定部304之另一端 與傳感線306之前端部相連接。該傳感線306末端部分爲 兩條支路，分別與光纖放大器308相連接。該光纖頭302 呈圓柱形，其由投光部3022及受光部3024組成。從光纖 放大器308發出之光線經傳感線306傳輸至光纖頭302之 200824873 '投光部3022，該投光部3022將光線傳出並投射於金屬工 -件50上；該受光部3024接收由金屬工件50反射回之光線 並藉由傳感線306傳輸給光纖放大器308。該固定部304 呈圓柱形，其直徑大於光纖頭302及傳感線306之直徑， 該固定部304可將該光纖頭302固定於動模板40中。該光 纖感應器30之工作原理係：接通電源後，光纖放大器308 會發出投射光線，經過傳感線306傳輸從光纖頭302之投 光部3022中傳出之投射光線照射於金屬工件50上，經該 '金屬工件50表面之反射使部分光線反射至光纖頭302之受 光部3024上；再經過傳感線306之傳輸，反射光線回饋至 光纖放大器308;之後由光纖放大器308檢測光線之強弱， 若光線強度超出光纖放大器308所設定之臨界數值時，則 光纖放大器308驅動輸出電路，從而帶動負載將模具合 模、成型。 裝配時，請一併參見圖3及圖4，將所述光纖感應器 30裝入模座402之階梯狀開孔4024中，由固定部304抵 t 持固定於階梯狀開孔4024之階梯面上，光纖頭302露出於 模座402之模穴4022表面上，傳感線306從模座402侧壁 上之側孔4026中引出並接入光纖放大器308中，再接入模 具機台之控制電路（圖未標）中。將模仁404上之通孔4044 套於該光纖頭302上，並藉由螺釘固定於模穴4022中。之 後將鑲件406之通孔4062套於該光纖頭302上並嵌置於模 仁404之長方形槽4042中，所述光纖頭302之頂端不能高 於該鑲件406嵌置金屬工件50部分之表面。最後將金屬工 件50固定於鑲件406中。 8 200824873 工作時，由光纖放大器308發出之光線經傳感線306， 再經光纖頭302之投光部3022將光線投射於金屬工件50 上，光線經金屬工件50反射於受光部3024上，並藉由傳 感線306傳送回光纖放大器308。由於金屬工件50與光纖 感應器30之光纖頭302距離很近，經金屬工件50反射之 光線強度很強，故光纖放大器308可檢測到很強之光信 號，該光信號之強度若已經超出光纖放大器308驅動輸出 電路之臨界值，從而帶動負載使模具合模、成型；若鑲件 406中沒有放入金屬工件50時，光纖頭302便不能感測到 反射之光線，或者反射光線強度很弱，沒有達到光纖放大 器308驅動輸出電路之臨界值，故不能驅動負載使模具合 模、成型。 可以理解，該光纖感應器也可應用於其他類型之模具 中，如衝壓模具等。 可以理解，該光纖感應器也可安裝於另一側之模板中 對金屬工件進行感測。 可以理解，安裝於模板中之光纖感應器數量可以係兩 個或兩個以上當同時安裝有三個以上之光纖感應器時， 光纖感應器不僅可以檢測金屬工件是否已經放入模具中， 同時也可以根據每-光纖感應器接收到金屬卫件反射回之 光線強度來檢測工件是否於模具中放平整。 可以理解，該光纖感應器不僅可應用於單模穴之 中，也可應用於雙模穴之模具中、 、/、 .^ ^ M 任杈穴或兩模穴都沒 有放入金屬工件時，模具不合模，口 金屬工件時模具才能合模。 中Ρ放入 200824873 綜上所述，本發明符合發明專利要件，爰依法提 利申凊。惟’以上所述者僅為本發明之較佳實施方式，本 發明之範圍幷不以上述實施方式為限，舉凡熟習本案技藝 之人士援依本發明之精神所作之等效修飾或變化，皆應涵 蓋於以下申請專利範圍内。 【圖式簡單說明】 圖1係動模板側結構之立體分解圖； 圖2係光纖感應器結構之示意圖； 圖3係光纖感應器裝配於動模板中之立體示意圖； 圖4係光纖感應器裝配於動模板中之剖面示意圖。 【主要元件符號說明: 光纖感應器 ] 30 光纖頭 302 投光部 3022 受光部 3024 固定部 304 傳感線 306 光纖放大器 308 動模板 40 模座 402 模穴 4022 階梯狀開孔 4024 侧孔 4026 模仁 404 槽 4042 通孔 4044 鑲件 406 通孔 4062 金屬工件 50200824873 'Nine, invention description: - [Technical field to which the invention pertains] The present invention relates to a mold structure, and more particularly to a structure embedded in a mold. [Prior Art] In the products of electronics, automobiles, motors, electrical appliances, instruments, meters, home appliances and communications, 60%~80% of the parts need to be molded by the mold. Therefore, the design of the mold structure and related processes have become industrial. An important technology for production. (In the process of insert molding, the metal workpiece is placed in the mold, and then the mold is clamped to inject the molten plastic, and the plastic is cooled to form a plastic product embedded with metal sheets. However, in the production process Because the metal workpiece is not put into the mold, the mold is injection molded, thereby causing damage to the mold, which not only seriously affects the processing speed, but also reduces the processing efficiency. [In view of the above], the present invention provides a method for preventing leakage of metal workpieces. a mold structure for improving processing speed and work efficiency. A mold structure comprising a template in which a fiber optic sensor is fixed. According to a conventional technique, a fiber optic sensor is mounted in the mold, and the fiber sensor can be Whether the metal workpiece is in the mold before being clamped, therefore, only when the metal workpiece is installed, the mold can be normally clamped to avoid damage to the mold, thereby improving the processing speed and working efficiency. 6 200824873 ^ The present invention provides a mold structure, and a preferred embodiment relates to a mold The mold structure includes a movable template 40 and a fiber sensor 30. The fiber sensor 30 can be fixed in the movable template 40. A metal workpiece 50 can be embedded on the movable template 40. The movable die plate 40 includes a mold base 402, a mold core 404 and an insert member 406. The mold base 402 is substantially in the shape of a cube, and has a rectangular cavity 4022 in the center thereof, and a stepped opening is opened in the center of the bottom surface of the mold cavity 4022. The hole 4024 is provided with a side hole 4026 in a side wall of the mold base 402, and the side hole 4026 is in communication with the stepped opening 4024. The mold core 404 can be embedded in the cavity 4022 of the mold base 402, and The main body of the mold core 404 is fixedly connected to each other by a screw (not shown). The center of the mold 404 is formed with a substantially rectangular groove 4042. The bottom of the groove 4042 has a through hole 4044, and the axis of the through hole 4044. Aligned with the axis of the stepped opening 4024. The insert 406 is generally rectangular in shape and can be embedded in a rectangular slot 4042 for securing the metal workpiece 50 and forming an end face of the product. Center opening ί has a through hole 4062, when assembled, The through hole 4062 communicates with the through hole 4044 of the mold core 404 and the axes coincide with each other. Referring to FIG. 2, the optical fiber sensor 30 includes a fiber optic head 302, a fixing portion 304, a sensing line 306 and a fiber amplifier. 308. One end of the fixing portion 304 is connected to the optical fiber head 302, and the other end of the fixing portion 304 is connected to the front end portion of the sensing line 306. The end portion of the sensing line 306 is two branches, respectively, and the optical fiber amplifier 308. The fiber optic head 302 has a cylindrical shape and is composed of a light projecting portion 3022 and a light receiving portion 3024. Light emitted from the fiber amplifier 308 is transmitted through the sensing line 306 to the 200824873 'light projecting portion 3022 of the fiber optic head 302. The portion 3022 transmits and projects the light onto the metal workpiece 50; the light receiving portion 3024 receives the light reflected back from the metal workpiece 50 and transmits it to the fiber amplifier 308 through the sensing line 306. The fixing portion 304 has a cylindrical shape with a diameter larger than the diameter of the optical fiber head 302 and the sensing wire 306. The fixing portion 304 can fix the optical fiber head 302 in the movable template 40. The working principle of the optical fiber sensor 30 is that after the power is turned on, the optical fiber amplifier 308 emits a projected light, and the projected light transmitted from the light projecting portion 3022 of the optical fiber head 302 is transmitted through the sensing line 306 to the metal workpiece 50. The portion of the light reflected from the surface of the metal workpiece 50 reflects a portion of the light onto the light receiving portion 3024 of the fiber optic head 302. After being transmitted through the sensing line 306, the reflected light is fed back to the fiber amplifier 308; then the fiber amplifier 308 detects the intensity of the light. If the light intensity exceeds the critical value set by the fiber amplifier 308, the fiber amplifier 308 drives the output circuit to drive the load to mold and mold the mold. When assembling, please refer to FIG. 3 and FIG. 4 together, and the optical fiber sensor 30 is inserted into the stepped opening 4024 of the die holder 402, and is fixed to the stepped surface of the stepped opening 4024 by the fixing portion 304. The fiber optic head 302 is exposed on the surface of the cavity 4022 of the die holder 402. The sensing wire 306 is taken out from the side hole 4026 on the sidewall of the die holder 402 and connected to the fiber amplifier 308, and then controlled by the die machine. The circuit (not shown). A through hole 4044 on the mold core 404 is placed over the fiber tip 302 and fixed in the cavity 4022 by screws. Then, the through hole 4062 of the insert 406 is sleeved on the optical fiber head 302 and embedded in the rectangular groove 4042 of the mold core 404. The top end of the optical fiber head 302 cannot be higher than the metal workpiece 50 embedded in the insert 406. surface. Finally, the metal workpiece 50 is secured in the insert 406. 8 200824873 During operation, the light emitted by the fiber amplifier 308 passes through the sensing line 306, and then the light is projected onto the metal workpiece 50 through the light projecting portion 3022 of the fiber head 302. The light is reflected by the metal workpiece 50 on the light receiving portion 3024, and The fiber amplifier 308 is transmitted back to the sense line 306. Since the metal workpiece 50 is close to the fiber optic head 302 of the fiber optic sensor 30, the intensity of the light reflected by the metal workpiece 50 is strong, so the fiber amplifier 308 can detect a strong optical signal, and the intensity of the optical signal exceeds the fiber. The amplifier 308 drives the critical value of the output circuit to drive the load to mold and mold the mold. If the metal workpiece 50 is not placed in the insert 406, the fiber optic head 302 cannot sense the reflected light, or the reflected light intensity is weak. The critical value of the output circuit of the fiber amplifier 308 is not reached, so the load cannot be driven to mold and mold the mold. It can be understood that the fiber optic sensor can also be applied to other types of molds, such as stamping dies. It will be appreciated that the fiber optic sensor can also be mounted in a template on the other side to sense the metal workpiece. It can be understood that the number of fiber sensors installed in the template can be two or more. When more than three fiber sensors are installed at the same time, the fiber sensor can not only detect whether the metal workpiece has been placed in the mold, but also According to the intensity of light reflected from the metal shield received by each fiber sensor, it is detected whether the workpiece is flattened in the mold. It can be understood that the fiber optic sensor can be applied not only in a single mold hole but also in a mold of a double mold hole, and/or . When the mold is not clamped, the mold can be closed when the metal workpiece is used. The lieutenant is placed in 200824873. In summary, the present invention complies with the requirements of the invention patent and is proposed in accordance with the law. However, the above description is only a preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and those skilled in the art will be able to make equivalent modifications or variations in accordance with the spirit of the present invention. It should be covered by the following patent application. BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective exploded view of a side structure of a movable template; FIG. 2 is a schematic view showing a structure of a fiber-optic inductor; FIG. 3 is a schematic perspective view of a fiber-optic sensor assembled in a movable template; Schematic diagram of the section in the moving template. [Main component symbol description: Fiber sensor] 30 Fiber head 302 Projection unit 3022 Light receiving unit 3024 Fixed part 304 Sensing line 306 Fiber amplifier 308 Moving template 40 Mould seat 402 Moulding hole 4022 Stepped opening 4024 Side hole 4026 Mould 404 slot 4042 through hole 4044 insert 406 through hole 4062 metal workpiece 50