合模裝置是（shì）保護（hù）精密模（mó）具及保證製品（pǐn）質量（liàng）的重要部件。與（yǔ）普通的合模裝置相比，精密合模裝置的剛度（dù）要（yào）大（dà）10%～15%，而且動、定模板之間的平行度標準也要高30%～40%，一般（bān）控製在（zài）0.05～0.08mm，從而實現對於模具的（de）低壓保護及對（duì）合模（mó）力的（de）精確控製。
Mold clamping device is an important part to protect precision molds and ensure product quality. Compared with the ordinary clamping device, the stiffness of the precision clamping device is 10% ~ 15%, and the parallelism standard between the moving and fixed templates is 30% ~ 40%, which is generally controlled at 0.05 ~ 0.08mm, so as to realize the low-pressure protection of the mold and the accurate control of the clamping force.
1、精密肘杆（gǎn）裝置的合模（mó）裝（zhuāng）置
1. Clamping device of precision elbow bar device
對於傳統的肘杆裝置的合（hé）模（mó）裝置，其動、定模板之間無法獲（huò）得長期穩定的平行度，同時很難實現對精密模具的低壓保護。
For the traditional clamping device of elbow bar device, the long-term stable parallelism between moving and fixed templates can not be obtained, and it is difficult to realize the low-pressure protection of precision molds.
為克（kè）服這一缺陷，精密肘杆裝置做了（le）以（yǐ）下改進：采用高精度的（de）滾珠導軌副來導向動模板的運行，保證了動模板運行精度的穩（wěn）定性；應用了具備控製速度和閉環壓力的雙重功能的伺服閥，實現（xiàn）了對（duì）於精密模具的低壓保護；銷軸和鋼套采用了具有高耐磨性的摩擦副，進（jìn）一步穩定了動、定模板（bǎn）之間（jiān）的平行度；精密調模機構的應用實現（xiàn）了高（gāo）精度地調模，從而（ér）保證了動模板在任一位置都（dōu）能達到穩定的平行度。
In order to overcome this defect, the precision elbow bar device has been improved as follows: a high-precision ball guide rail pair is used to guide the operation of the moving formwork to ensure the stability of the operation accuracy of the moving formwork; The servo valve with dual functions of controlling speed and closed-loop pressure is applied to realize the low-pressure protection of precision die; The pin shaft and steel sleeve adopt friction pairs with high wear resistance to further stabilize the parallelism between moving and fixed formwork; The application of precision die adjustment mechanism realizes high-precision die adjustment, so as to ensure that the moving template can achieve stable parallelism at any position.
2、精密全液壓合模裝置
2. Precision full hydraulic clamping device
精密注塑（sù）的合模裝置是以全液壓合模裝置為主。傳統的合模裝置其肘杆裝（zhuāng）置的合模力通常作用在上、下(或（huò）左、右)兩側，會導致動模板中部發生受力變形，從而影（yǐng）響（xiǎng）模（mó）板的平（píng）行度，而這種全液壓（yā）合模裝置的合模（mó）油缸活塞作用於動模板的（de）中央位置，保證了動、定模板之間長期（qī）穩定的平行度。
The clamping device of precision injection molding is mainly full hydraulic clamping device. The clamping force of the elbow bar device of the traditional clamping device usually acts on the upper and lower (or left and right) sides, which will cause the stress deformation in the middle of the moving template, thus affecting the parallelism of the template. The clamping cylinder piston of the full hydraulic clamping device acts on the central position of the moving template, ensuring the long-term stable parallelism between the moving and fixed templates.
隨著應用（yòng）要求的提高，精密全液壓（yā）合模裝置也不斷進（jìn）行著改造，動模板運行的導向采用高精度的滾珠導軌副就是一個最明顯的進步，使其（qí）達到了進一步提高動、定（dìng）模板（bǎn）之間的平行度穩定性的（de）要求。
With the improvement of application requirements, the precision full hydraulic mold closing device is also constantly reformed. The most obvious progress is that the moving template is guided by the high-precision ball guide rail pair, which makes it meet the requirements of further improving the parallelism and stability between the moving and fixed templates.
3、無（wú）拉杆合（hé）模裝置
3. Non pull rod clamping device
無拉杆合模裝置由於不采用拉杆，消除（chú）了拉杆撓度對模板平行度的影響。近年來，通過對易受力變形的“C”形架進行（háng）改進，提高了動、定（dìng）模板之間平行度的精度及精度穩定性。比如（rú），米拉克龍的Freedom係（xì）列無（wú）拉杆注塑機其合模裝置呈U型結構，且僅有底下兩根拉（lā）杆，具（jù）有更高的（de）剛性。通過配置專利的平衡油缸結構，使得定模板之間的平行度更穩（wěn）定。
Because the pull rod is not used in the pull rod clamping device, the influence of the pull rod deflection on the parallelism of the formwork is eliminated. In recent years, the accuracy and accuracy stability of parallelism between moving and fixed formwork have been improved by improving the "C" frame which is easy to bear force and deformation. For example, miracron's freedom series pull rod free injection molding machine has a U-shaped clamping device with only two lower pull rods, which has higher rigidity. By configuring the patented balance oil cylinder structure, the parallelism between fixed templates is more stable.
4、分塊連體頭板
4. Block connected head plate
一般，有拉杆的合模裝置注塑機其頭（tóu）板都是采用（yòng）整塊（kuài）式結構（gòu），而這樣的結構設計往往會由於頭（tóu）板受力過大而導致整（zhěng）體變形。精（jīng）密（mì）注塑機通過采用分塊連體頭板，有效提高了頭板的剛度，從而達到減小模板因受力（lì）而對模具產生（shēng）的（de）變形撓度（dù）。這種分塊連體頭板將頭板的受力功能和安裝模具功能分開，分別由各自的塊（kuài）體承擔，並用（yòng）中心圓環體連接受力塊與（yǔ）安裝模具塊。在承受合模力的過程（chéng）中，由於中心圓環體的受力麵積小於受力塊（kuài）麵積，頭板受力（lì）產生的撓度,僅將中央中心（xīn）圓環體處所產生的（de）變形撓度傳遞給（gěi）安裝模具塊，由此可以看出,安裝模具塊因受力（lì）而產生的變形撓度區僅在中央（yāng）中心圓環體，不會對安裝模具塊整體產生撓度，從而達到提高鎖（suǒ）模精度的目的（de）。
Generally, the head plate of injection molding machine with pull rod clamping device adopts the whole block structure, and such structural design often leads to overall deformation due to excessive force on the head plate. The precision injection molding machine effectively improves the stiffness of the head plate by using the block connected head plate, so as to reduce the deformation and deflection of the formwork to the mold due to stress. The block connected head plate separates the stress function of the head plate from the function of installing the die, which is respectively borne by their respective blocks, and the central ring is used to connect the stress block and the installing die block. In the process of bearing the clamping force, since the stress area of the central ring is less than the area of the stress block, the deflection generated by the stress of the head plate only transmits the deformation deflection generated at the central ring to the installation die block. It can be seen that the deformation deflection area of the installation die block due to the stress is only in the central ring and will not produce deflection on the whole of the installation die block, So as to improve the mold locking accuracy.
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