Reasonably implement the selection of the clamping structure
To avoid the incompatibility between the subsequent adjustment of the injection molding machine and the preliminary practice, the reasonable choice of the injection molding machine should be carried out in a scientific and orderly manner before the selection and optimal adjustment of the injection molding machine structure. Combined with the basic situation of the current injection molding machine clamping, it can be roughly divided into:
Fully hydraulic. This type of injection molding machine mold clamping device mainly relies on the change of air pressure in the oil cylinder to realize the operation of the injection molding machine’s mold clamping structure. This injection molding machine’s clamping structure is more suitable for equipment with less external oil injection weight and a higher template work balance.
Toggle style. That is to say, the workers’ movement process of the injection molding machine mold closing entirely relies on the back and forth swing of the lever to complete the corresponding power transmission. Compared with other mold clamping structures of injection molding machines, the closed-mold operation of this type of structure has the highest power of work. The structure’s work speed and motion efficiency in the closed space will also change accordingly when actual work is performed. It is more suitable for mold adjustment. Equipment with a short distance between the structure and the lubrication system.
The electric structure mainly realizes the orderly adjustment between the structure of the mechanical protection device through the operation adjustment of the servo motor. The overall smoothness of the structure is higher, and the application effect in the electrical control system is more effective.
Structural improvement of the mechanical protection device
In the clamping area of the injection molding machine, there are often high temperature and high pressure operating conditions, which not only affect the production quality of plastic products, but also cause local deformation, etc., but also easily cause part of the program barrel to fix the template or squeeze and cut Dangers and other conditions significantly increase the hidden dangers of safe operation within the clamping area of the injection molding machine. In response to this problem, the critical implementation points of the mechanical protection device structure improvement method given by the technicians are:
A. The protection device within the clamping area of the injection molding machine is transformed from the originally fixed adjustment to an automatic mechanical control device. When high temperature, high pressure, and other safety hazards occur within the area during the mold clamping production process of the external injection molding machine, the autonomous precaution program in the mold clamping protection area of the injection molding machine will be automatically opened to realize the addition of the area to the operator and the plastic model. On the contrary, the parts of the protection area of the injection molding machine will be closed so that the production personnel can perform the scientific and orderly operation and flexible production.
B. The top seal adjustment method is used to protect it. During the corresponding adjustment period of the mechanical protection device, to meet the actual needs of the protection and control of the current injection molding machine clamping area, during the top seal adjustment process, the top seal adjustment device adopts a partial sealing treatment method to solve the safety of the wholly exposed part of the fixed top cover. Problem. During the improvement of the mold clamping area of the injection molding machine, the corresponding reform of the hidden danger factors of the mechanical protection device can not only overcome the problems of the traditional injection molding machine mold clamping processing level but also reduce the hidden dangers in the subsequent manipulation, and achieve the safety of the injection molding machine mold clamping production activities. Effectiveness of implementation.
Improvement of the dangerous structure of operating side mold clamping
The improvement of the mold clamping structure of the operating side injection molding machine refers to the additional adjustment of the injection molding machine mold clamping protection circuit from the perspective of the protective circuit. In the traditional mold clamping structure of the injection molding machine, the indirect power-off method is mainly adopted to protect the hidden dangers. Under regular operation, the injection molding machine can be closed for safety protection.
However, the electric hydraulic circuit part is prone to double circuits in an emergency. At this time, the protection structure of the mold clamping area of the injection molding machine not only cannot play a protective role but will become a driving force for the development of potential safety hazards, directly causing the entire mold clamping device of the injection molding machine to paralyze. By the basic situation of the current operating side mold clamping control, Paulette has implemented the injection molding machine mold clamping adjustment method implemented by the technicians, and the dangerous structure improvement adjustments given by the technicians are as follows:
A. The hydraulic safety circuit part directly adopts the two-channel oil control method to replace the cut-off short circuit. It adds a separate controller on top of the core action circuit structure to ensure that in the current transmission link of the injection molding machine mold closing program when a partial solenoid coil transmission line fails, the injection molding machine mold closing control program can immediately cut off the fault line.
B. Avoid the direct sealing adjustment of the two sets of coils without the state, which can reduce the hidden dangers of control linkage in the mold clamping power source, primary cutting device, and secondary cutting device of the injection molding machine.
C. Separately install the mold clamping coil on the primary cutting device and the mold opening coil on the main device. That is, avoid setting simultaneous adjustments for mold clamping and mold opening on the same line.
D. The pilot valve of the secondary cut-off device part should be considered between the first and second stages to realize the corresponding adjustment and safety protection of the cut-off device part.
The E-side electrical circuit device needs to adopt a centralized electrical analog signal safety protection system to control the safety of the electrical protection circuit. Among the control, a safety door is installed with the relay part, which is mainly used as the overall control structure of the line. At the same time, the secondary cut-off device needs to use the cut-off brake switch device to complete the control and management in the local area of the line.
In the specific implementation process of the improved design and adjustment of the protection device of the mold clamping area of the injection molding machine, according to the basic situation of the program model structure, starting from the basic level of the management and control of the dangerous structure of the side mold clamping, the corresponding adjustment process of the series of activities of the mold clamping area protection is continuously carried out. The core circuit part gave clear guidance and provided a relatively comprehensive guarantee basis for the coordinated implementation of mold-clamping activities.
In addition, during the improvement design of the protection device for the clamping area of the injection molding machine, whether the design factors of the various parts are coordinated with each other and whether they are in a relatively complete and reasonable state are also points that need to be analyzed in the improvement of the protection device for the clamping area of the injection molding machine. For this reason, it is also an indispensable step for technicians to comprehensively inspect the improved structure after adjusting the protective device of the injection molding machine’s clamping area.
To sum up, the research on the improvement design of the protection device of the clamping area of the injection molding machine is a theoretical summary of the continuous improvement in the practical operation of the production technology. On this basis, this article analyzes the improvement strategy of the protection device of the mold clamping area of the injection molding machine by rationally implementing the selection of the mold clamping structure, the improvement of the mechanical protection device structure, and the improvement of the dangerous structure of the operating side mold clamping. Therefore, the article’s research results provide a new perspective for the optimal adjustment of the protection device of the clamping area of the injection molding machine.
