Injection assembly structure, system comprising same and application method

Abstract

The invention relates to an injection assembly structure, a system comprising the same and an application method.The injection assembly structure comprises an injection head, a hammer handle connector and an injection rod which are sequentially connected and further comprises a built-in gas circuit penetrating through the injection head, the hammer handle connector and the injection rod, and a first hole and a second hole are formed in the surface of the injection head and the surface of the injection rod respectively; and the first hole and the second hole are communicated with the gas path. The system comprises an interactive interface, a main control system, a die casting machine, an injection assembly and an executing mechanism, the main control system acts on the executing mechanism, and the executing mechanism acts on the injection assembly. The invention further provides an application method adaptive to the master control system. According to the design of the system, software communication is adopted, and the displacement action of the injection assembly is precisely regulated and controlled by means of injection displacement control of die casting equipment. In addition, independent channels are arranged for different media respectively, corresponding execution mechanisms are arranged, accurate regulation and control of key parameters such as on-off, flow and proportion of the media are achieved in combination with an application method, and support is provided for automatic and intelligent maintenance of die-casting production.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of die casting, in particular to a structure of a pressure injection assembly, a system comprising the structure and an application method. BACKGROUND

[0002] As a high-efficiency and precise metal forming process, pressure casting can realize the efficient production of lightweight, high-strength and complex structure metal parts by injecting molten metal into a mold under high pressure, and has become an indispensable key technology in modern manufacturing industry. However, during the pressure casting production process, long-term accumulation of metal residues and modified lubricants may breed bacteria, pollute the production environment, and reduce the quality of castings. Therefore, to ensure the long-term operation of the equipment and the quality of the products, it is particularly important to regularly clean and maintain the pressure casting equipment.

[0003] Notably, the material pipe component of the pressure casting equipment has become a difficulty and pain point in the maintenance and production links of cleaning, lubrication, drying and the like due to its cylindrical structure feature with a large depth-diameter ratio. With the rapid development of industrial automation technology, mechanical arms based on servo systems have been widely used in automatic cleaning, lubrication, drying and the like of pressure casting equipment. However, the existing solutions mainly focus on the maintenance optimization of pressure casting molds, and still face many limitations when applied to the internal cleaning of the material pipe: the traditional mechanical arm cannot meet the requirements of deep pipe operation due to the stroke limitation, and needs to be customized with an extended structure; the standard nozzle is usually oversized to meet the efficient mold lubrication requirements, and needs to be replaced by a special nozzle by manual operation for maintenance in the material pipe; in addition, different specifications of the material pipe need to be programmed and debugged separately, which increases the system complexity. These limitations result in frequent manual intervention and prolonged downtime, which seriously restricts the overall production efficiency. SUMMARY

[0004] In view of the shortcomings of the prior art, the present application aims to provide a structure of a pressure injection assembly, a system comprising the structure and an application method to solve one or more problems in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solutions of the present application are as follows: A structure of a pressure injection assembly, the structure comprising a pressure injection head, a hammer handle joint and a pressure injection rod connected in sequence; the structure further comprising a gas path, the gas path being built-in and passing through the pressure injection head, the hammer handle joint and the pressure injection rod.

[0006] Further, the pressure injection head is provided with a first hole, and the pressure injection rod is provided with a second hole, and the first hole and the second hole both pass through the gas path.

[0007] A system, comprising the injection assembly structure, the system including a master control system, an injection assembly and an actuator, the master control system acting on the actuator and the injection assembly respectively, and the actuator acting on the injection assembly.

[0008] Further, the master control system includes a first PI controller, a second PI controller and a concentration measuring instrument.

[0009] Further, the actuator includes a release agent dosing pump, a compressed air flow regulating valve and a cleaning liquid dosing pump.

[0010] Further, the actuator further includes a first electrically controlled stop valve, a second electrically controlled stop valve and a third electrically controlled stop valve respectively matched with the release agent dosing pump, the compressed air flow regulating valve and the cleaning liquid dosing pump.

[0011] An application method applied to the master control system, including the following steps: Setting target parameters in the injection assembly structure of the injection molding machine through the interactive interface of the master control system, including release agent target ratio, compressed air target flow and cleaning liquid target ratio; Controlling the output of release agent, compressed air and cleaning liquid, and then mixing them to the concentration measuring instrument and then to the injection assembly; The concentration measuring instrument measures and feeds back the actual ratio parameters compared with the target parameters, including release agent actual ratio and cleaning liquid actual ratio; Controlling the output of release agent, compressed air and cleaning liquid again, and then mixing them to the concentration measuring instrument, finally realizing that the actual ratio parameters are consistent with the target parameters and keeping dynamic stability.

[0012] Further, the release agent control output is based on the first PI controller controlling the release agent dosing pump and assisted by the first electrically controlled stop valve; The compressed air control output is based on the compressed air flow regulating valve assisted by the second electrically controlled stop valve; The cleaning liquid control output is based on the second PI controller controlling the cleaning liquid dosing pump assisted by the third electrically controlled stop valve.

[0013] Further, the release agent actual ratio is fed back to the first PI controller, and the cleaning liquid actual ratio is fed back to the second PI controller.

[0014] Compared with the prior art, the beneficial technical effects of the present application are as follows: (I) Through the design of built-in gas circuit in the injection assembly, the cleaning liquid, lubricant, compressed air and other media can directly and efficiently act on the inner wall of the material pipe. This scheme ensures the use and maintenance of the material pipe during the die casting process, avoids the need to modify the mechanical arm, and significantly reduces the frequency of manual intervention.

[0015] (II) The design of the system of the present application adopts a software communication method, uses the injection displacement control function of the die casting equipment, realizes precise control of the injection assembly movement, and sets up independent paths and corresponding actuators for cleaning liquid, lubricant, compressed air and other media. Combined with the application method of the main control system, the key parameters such as the on-off, flow, ratio and duration of each medium are accurately controlled, which provides key support for the automation and intelligent maintenance of die casting production. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 A schematic diagram of the injection assembly structure, the system comprising the structure and the application method of the present application embodiment is shown.

[0017] Figure 2 A control schematic diagram of the system of the present application embodiment is shown.

[0018] Figure 3 A schematic diagram of the application method of the system of the present application embodiment is shown.

[0019] In the drawings, 1 is a material pipe, 2 is an injection head, 3 is a hammer handle joint, 4 is an injection rod, 5 is a first hole, 6 is a gas circuit, and 7 is a second hole. DETAILED DESCRIPTION

[0020] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will further describe a kind of injection assembly structure, the system comprising the structure and the application method of the present application in conjunction with drawings and specific embodiments. According to the following description, the advantages and characteristics of the present application will be clearer. It should be noted that the drawings are greatly simplified and all use non-precise proportions, only to facilitate, clearly assist in explaining the purpose of the present application embodiment. In order to make the purpose, features and advantages of the present application more obvious and easy to understand, please refer to the drawings. It should be noted that the structure, proportion, size, etc. shown in the drawings of the present application are only used to cooperate with the content disclosed in the specification, so that those skilled in the art can understand and read, and are not used to limit the conditions of the present application. Therefore, any modification of structure, change of proportion relationship or adjustment of size, which does not affect the effect and purpose that can be achieved by the present application, should still fall within the scope of the technical content disclosed by the present application.

[0021] Referring to Figure 1 The injection assembly structure of the present embodiment is movably fitted in and arranged in the material pipe 1, and comprises an injection head 2, a hammer handle joint 3 and an injection rod 4 connected in sequence. The injection head 2 is made of high-strength wear-resistant material to adapt to frequent reciprocating motion in the material pipe 1, reduce wear and tear, and prolong service life. The hammer handle joint 3 plays a key role in connecting the injection head 2 and the injection rod 4, and is designed in accordance with the principle of mechanics to effectively transmit pressure and ensure the stability of the injection process. The injection rod 4 has certain toughness and rigidity, and can ensure that it does not deform excessively while bearing a large pressure, thereby accurately transmitting the pressure to the injection head 2 and pushing the material to move in the material pipe 1.

[0022] Further, the structure further comprises an air path 6 which is built-in and penetrates through the injection head 2, the hammer handle joint 3 and the injection rod 4. The injection head 2 is provided with a first hole 5 on the surface, and the injection rod 4 is provided with a second hole 7 on the surface, and the first hole 5 and the second hole 7 are both connected to the air path 6. Through the ingenious design of the air path 6 and the first hole 5 and the second hole 7, when the cleaning liquid, the release agent, the compressed air and other media are input through the second hole 7 and output from the first hole 5 through the air path 6, the inside of the material pipe 1 can be efficiently cleaned, the residual material can be removed, the material can be prevented from accumulating and solidifying in the material pipe 1 to affect subsequent use, the release agent can be sprayed into the material pipe 1 before injection to effectively reduce the friction between the material and the inner wall of the material pipe, so that the material is smoother during the injection process and the phenomenon of blockage is reduced, and at the same time, the output of compressed air can also dry the surface of the injection head to avoid rusting due to a humid environment, prolong the overall service life of the injection assembly, and improve its working performance and reliability.

[0023] Please continue to refer to Figure 2 and Figure 3The system of the embodiment comprises the injection assembly structure described above, and the system includes a main control system, an injection assembly, and an actuator. The main control system acts on the actuator and the injection assembly respectively. Specifically, a user sets relevant target parameters to the actuator through an interactive interface of the main control system, and the actuator receives the target parameters and injects cleaning liquid, release agent, compressed air, and other media into the injection assembly. The main control system also controls the injection assembly of the die casting machine through the interactive interface, drives the injection assembly to work, and controls the displacement action of the injection assembly during maintenance and production, such as the start position, stop position, displacement speed, and repetition number. The main control system sends accurate control signals to the die casting machine by analyzing the user input instructions, so as to accurately regulate and control the motion parameters of the injection assembly. The interactive interface is a window for information interaction between the user and the main control system. The user inputs operation instructions and other information through the interactive interface and transmits the information to the main control system. The main control system processes the information accordingly, and if no new information is received, the current information setting is maintained. The die casting machine controls the motion of the injection assembly. During the die casting production process, the main control system can flexibly adjust the displacement action of the injection assembly according to the pre-set production process requirements, so as to ensure the quality and production efficiency of the die casting product.

[0024] The main control system includes a first PI controller, a second PI controller, and a concentration measuring instrument. In the embodiment, the first PI controller and the second PI controller are both proportional-integral controllers, which can obtain output through proportional and integral links based on the error between the target and the actual feedback, and continuously regulate and control to ensure that the actual proportioning always meets the target. The actuator includes a release agent quantitative pump, a compressed air flow regulating valve, and a cleaning liquid quantitative pump. The actuator also includes a first electric control stop valve, a second electric control stop valve, and a third electric control stop valve matched with the release agent quantitative pump, the compressed air flow regulating valve, and the cleaning liquid quantitative pump respectively. The release agent quantitative pump cooperates with the on-off output of the first electric control stop valve to output release agent, the compressed air flow regulating valve cooperates with the on-off output of the second electric control stop valve to output compressed air, the cleaning liquid quantitative pump cooperates with the on-off output of the third electric control stop valve to output cleaning liquid, and the concentration measuring instrument is used to monitor the concentration of the output release agent, compressed air, and cleaning liquid, that is, to monitor the concentration of the cleaning liquid, release agent, and other media injected into the injection assembly, and to feed back the data to the first PI controller and the second PI controller in real time. This system architecture design enables the entire die casting production process to be highly automated and intelligent, greatly improves the accuracy and stability of production, and reduces the errors and uncertainties caused by manual open-loop regulation. The application method of the embodiment is applied to the main control system described above and includes the following steps: Step 1: Set target parameters for injection into the structure of the injection assembly by the master control system, including the target ratio of release agent, the target flow of compressed air, and the target ratio of cleaning liquid, to ensure the efficiency and accuracy of the entire process. At the same time, the operator manually inputs the specific product model information required for this production task on the master control system interface, and the master control system automatically matches the best parameter target range corresponding to the product model to provide a basis for subsequent accurate control. For product models that are not yet archived, the user can open the debugging function and archive it after debugging according to experience.

[0025] Step 2: Control the output of release agent, compressed air, and cleaning liquid, and then mix them to the concentration measuring instrument and then to the injection assembly. The release agent control output is based on the first PI controller controlling the release agent dosing pump and assisted by the first electric control stop valve to achieve fine adjustment. The compressed air control output is based on the compressed air flow regulating valve assisted by the second electric control stop valve to achieve stable flow. The cleaning liquid control output is based on the second PI controller controlling the cleaning liquid dosing pump assisted by the third electric control stop valve to achieve fine adjustment.

[0026] Step 3: The concentration measuring instrument measures the actual ratio parameters and compares them with the target parameters, including the actual ratio of release agent and the actual ratio of cleaning liquid. The actual ratio feedback of the release agent will be directly transmitted to the first PI controller for necessary adjustment. Similarly, the actual ratio feedback of the cleaning liquid will also be transmitted to the second PI controller to ensure that its ratio is consistent with the target.

[0027] Specifically, if the concentration measuring instrument detects that the concentration of the release agent is lower than the preset value, the first PI controller increases the operating frequency of the release agent dosing pump to increase the injection amount of the release agent. Similarly, if the concentration measuring instrument detects that the concentration of the cleaning liquid is lower than the preset value, the second PI controller increases the operating frequency of the cleaning liquid dosing pump to increase the injection amount of the cleaning liquid. Conversely, if the concentration measuring instrument detects that the concentration of the medium is higher than the preset value, the corresponding operating frequency is reduced to adaptively adjust. Through the coordination of the concentration measuring instrument and the first PI controller and the second PI controller, adaptive regulation of the output ratio of release agent and cleaning liquid is achieved, and compressed air can be self-adaptively regulated by the compressed air flow regulating valve.

[0028] In addition, through the first electric control stop valve, the second electric control stop valve, and the third electric control stop valve, the injection of the corresponding medium can be quickly cut off in the case of abnormal concentration or other sudden situations, avoiding the impact of medium concentration problems on the working effect of the injection assembly and ensuring the efficiency and stability of the production process.

[0029] Step 4: Controlling the output of the release agent, compressed air and cleaning liquid again, mixing to the concentration measuring instrument, finally realizing the actual ratio parameters consistent with the target parameters, to ensure that the actual ratio parameters of each medium injected into the injection assembly is constant. Through this process, to ensure that the actual ratio and the target parameters are completely consistent, so as to realize the precise control of the whole injection assembly structure, to ensure product quality and production efficiency. Preferably, in each cycle comparison process, the system displays the deviation value of the current actual ratio and the target ratio in the form of a visual chart on the interactive interface, which is convenient for the operator to monitor in real time, and when the actual ratio and the target ratio deviation is within the allowable range, the system automatically determines that the precise control is completed, and a prompt sound is issued to inform the operator.

[0030] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, not all possible combinations of the technical features in the above-described embodiments are described, but as long as the combinations of the technical features do not contradict, they should be considered within the scope of the present disclosure.

[0031] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be pointed out that for ordinary skilled in the art, without departing from the concept of the present application, a number of modifications and improvements can be made, which are within the scope of the present application. Therefore, the scope of protection of the present application should be subject to the appended claims.

Claims

1. A shot assembly structure, characterized in that: The structure includes a shot head, a hammer handle joint and a shot rod which are connected in sequence; the structure also includes an air circuit which is built in and passes through the shot head, the hammer handle joint and the shot rod.

2. The injection assembly structure according to claim 1, wherein: A first hole is provided on the surface of the injection head, and a second hole is provided on the surface of the injection rod. Both the first hole and the second hole are connected to the gas path.

3. A system comprising an injection assembly structure according to any one of claims 1 to 2, characterized in that: The system includes a main control system, an injection assembly and an actuator. The main control system acts on the actuator and the injection assembly respectively, and the actuator acts on the injection assembly.

4. A system according to claim 3, characterized in that: The main control system includes a first PI controller, a second PI controller and a concentration measuring instrument.

5. A system according to claim 3, characterized in that: The actuator includes a release agent metering pump, a compressed air flow regulating valve and a cleaning liquid metering pump.

6. A system according to claim 5, characterized in that: The actuator further includes a first electrically controlled stop valve, a second electrically controlled stop valve and a third electrically controlled stop valve respectively coordinated with the release agent metering pump, the compressed air flow regulating valve and the cleaning liquid metering pump.

7. An application method, applied to the main control system according to any one of claims 3 to 6, characterized in that: The steps are as follows: The target parameters of the injection assembly structure of the die-casting machine are set through the interactive interface of the main control system, including the target ratio of the release agent, the target flow rate of the compressed air, and the target ratio of the cleaning fluid; Control the output of release agent, compressed air and cleaning liquid, mix them and send them to the concentration measuring instrument and then to the injection assembly; The concentration measuring instrument measures and feedbacks the actual ratio parameters and compares them with the target parameters, including the actual ratio of the release agent and the actual ratio of the cleaning liquid; The output of release agent, compressed air and cleaning fluid is controlled again, mixed and sent to the concentration measuring instrument, ultimately achieving consistency between the actual ratio parameters and the target parameters and maintaining dynamic stability.

8. An application method according to claim 7, characterized in that: The release agent control output is realized based on a first PI controller controlling a release agent metering pump and supplemented by a first electronically controlled stop valve; The compressed air control output is realized based on the compressed air flow regulating valve supplemented by the second electronically controlled stop valve; The cleaning liquid control output is achieved based on the second PI controller controlling the cleaning liquid metering pump supplemented by the third electronically controlled stop valve.

9. An application method according to claim 8, characterized in that: The actual ratio of the release agent is fed back to the first PI controller, and the actual ratio of the cleaning liquid is fed back to the second PI controller.

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