A die-casting production mold for automotive precision hardware

Abstract

The invention discloses a die-casting production mold for automobile precision hardware parts, and relates to the technical field of die-casting molds. The invention aims to solve the problem that the temperature control of a fixed mold and a movable mold by full-segment temperature control has limited temperature control accuracy and too slow response speed; the invention comprises a mold body structure arranged in a molding machine and a temperature regulating channel arranged with the same wall thickness as the mold body structure corresponding to the cavity; an error segmentation result coefficient is determined according to the real-time working state of a current mold temperature chiller, and the execution temperature and operation cycle of the current mold temperature chiller are determined according to the error segmentation result coefficient, and intelligent temperature control in the die-casting process is realized by the temperature control method of the segmented execution temperature and the operation cycle, so as to achieve the purpose of lateral differentiation comparison between temperature data for each time period during the operation of the die-casting mold, and reduce the probability of low temperature control accuracy and slow response speed caused by the temperature control method only according to the real-time temperature response of the die-casting mold.

Description

Technical Field

[0001] The invention relates to the technical field of die-casting dies, and in particular to a die-casting production die for automobile precision hardware. Background Art

[0002] Die casting mold is a tool for casting metal parts, a tool for completing the die casting process on a special die casting forging machine; it is also one of the indispensable molds in the automobile manufacturing process; the temperature control of the die casting mold is very important for the production of high-quality die castings. Uneven or inappropriate die casting mold temperature will also lead to unstable casting dimensions, deformation of ejected castings during the production process, and defects such as thermal pressure, mold sticking, surface depression, internal shrinkage and thermal bubbles. When the mold temperature varies greatly, it will have different degrees of impact on variables in the production cycle, such as filling time, cooling time and spraying time.

[0003] In combination with the above, with regard to temperature control in the die-casting process, the prior art uses a PID temperature control system to perform intelligent temperature control during the die-casting process of the mold, but there are still the following points to be improved: the full-segment temperature control leads to limited temperature control accuracy and slow response speed for the temperature control of the fixed mold and the movable mold, which is specifically manifested as: the full-segment temperature control cannot divide the control process into segments, and the proportional coefficient of the entire process is the same, making it difficult to perform horizontal differentiation comparison and analysis between the temperature data of each time period, which needs to be optimized; for this reason, this application proposes a solution. Summary of the invention

[0004] The purpose of the present invention is to provide a die-casting production mold for automobile precision hardware, which is used to solve the problem that the temperature control of the fixed mold and the movable mold by full-stage temperature control has limited temperature control accuracy and slow response speed.

[0005] The purpose of the present invention can be achieved through the following technical solutions: A die-casting production mold for automobile precision hardware, including a mold body structure arranged in a molding machine, the mold body structure includes a movable mold body and a fixed mold body connected to each other, the upper end of the movable mold body is provided with a fixed mold body connected to a lower pressing assembly of the molding machine, the lower end of the movable mold body is installed with a movable mold base plate connected to an upper top assembly of the molding machine, a cavity structure is installed between the movable mold body and the fixed mold body, and the outer side of the movable mold body and the fixed mold body corresponding to the same wall thickness of the cavity structure are provided with a temperature adjustment channel connected to a mold temperature chiller, the mold temperature chiller is externally connected to a controller, and the controller is used to control the operation of a mold temperature control system, and the mold temperature control system includes a parameter acquisition unit, an error segmentation management unit, a feedback adjustment unit and a temperature control management unit that are communicatively connected;

[0006] The parameter acquisition unit is used to obtain the temperature flow change value of the temperature adjustment channel, and the temperature flow change value includes the heat transfer oil flow rate LTq and the average temperature data T平 , and the heat transfer oil flow rate LTq and average temperature data T 平 Send to the feedback regulation unit;

[0007] The error segmentation management unit performs integrated analysis based on the working state of the mold temperature chiller to obtain the error segmentation result coefficient λ, and sends the error segmentation result coefficient λ to the feedback adjustment unit;

[0008] The feedback regulation unit numerically calculates the mold temperature chiller and temperature flow change value within the time threshold to obtain a segmented regulation instruction, and determines the temperature regulation cycle of the mold temperature chiller according to the segmented regulation instruction;

[0009] The temperature control management unit is used to execute the temperature adjustment process of the mold temperature chiller to ensure accurate temperature adjustment.

[0010] It is further configured as follows: the mold cavity structure comprises a main mold core and a side mold core that are in contact with each other, and the main mold core is provided with molding cavities that are symmetrically arranged.

[0011] It is further configured as follows: a main channel is commonly provided in the middle of the upper side of the main core and the side core, a diameter reduction zone is provided in the portion of the main channel extending to the upper side of the main core, a branch channel 1 and a branch channel 2 are symmetrically provided at the lower end of the diameter reduction zone, and the ends of the branch channel 1 and the branch channel 2 are connected to the molding cavity.

[0012] It is further configured that: the process of the parameter acquisition unit acquiring the temperature flow change value of the temperature adjustment channel is as follows: the heat transfer oil flow in the temperature adjustment channel is collected within the time threshold and marked as LTq, at least three groups of temperature sensors are arranged in the temperature adjustment channel along the axial direction, and the feedback adjustment unit is used to perform arithmetic averaging on the temperature data acquired by the temperature sensors arranged in the temperature adjustment channel within the time threshold and mark the arithmetic average result as T 平 .

[0013] It is further configured as follows: the error segmentation management unit obtains the working state of the mold temperature chiller and obtains the error segmentation result coefficient λ: if the mold temperature chiller is in working state, a conventional segmentation signal is generated and marked as λ 1 If the mold temperature chiller is not in operation, the time difference between the last time it was in the temperature adjustment state and the current time is calculated. If the time difference is less than the preset difference, a temperature adjustment pause signal λ is generated. 2 If the time difference is greater than or equal to the preset difference, a continuous temperature adjustment signal λ is generated. 3 .

[0014] It is further configured that: the feedback adjustment unit obtains the error segmentation result coefficient λ, the heat transfer oil flow LTq and the average temperature data T 平 , construct the calculation formula of segmented control instruction FTD Where a, b and c are preset proportional coefficients, and a>b>c>0;

[0015] Compare and analyze the segment control instruction FTD with the preset segment control threshold:

[0016] If the segment control instruction FTD>segment control threshold, it means that the current mold temperature chiller is in working state and λ=λ 1 , generate conventional segment control instructions and send them to the temperature control management unit;

[0017] If the segment control instruction FTD is less than the segment control threshold, it means that the current mold temperature chiller is in a non-working state and λ=λ 2 , generate a shutdown command and send it to the temperature control management unit;

[0018] If the segment control instruction FTD is within the segment control threshold, it means that the current mold temperature chiller is in a non-working state and λ = λ 3 , generate a sub-segment control instruction and send it to the temperature control management unit.

[0019] It is further configured that: the temperature control management unit sends conventional segment control instructions, shutdown instructions and re-segment control instructions to the mold temperature chiller respectively to execute relevant control actions.

[0020] The present invention has the following beneficial effects:

[0021] 1. The present invention aims at the problem that the temperature control of the fixed mold and the movable mold is limited in temperature control accuracy and too slow in response speed due to the full-segment temperature control; the error segmentation result coefficient is determined according to the real-time working state of the current mold temperature chiller, and the execution temperature and operation cycle of the current mold temperature chiller are determined by the error segmentation result coefficient, and the temperature intelligent control in the die-casting process is realized by the segmented execution temperature and operation cycle temperature control method, so as to achieve the purpose of completing the horizontal differentiation comparison between the temperature data for each time period during the operation of the die-casting mold, and reduce the probability of low temperature control accuracy and slow response speed caused by the temperature control method based only on the real-time temperature response of the die-casting mold;

[0022] 2. When the temperature control management unit receives the re-segmentation control instruction, the temperature control process of the die-casting mold is as follows: Since the mold temperature chiller is in a non-working state at this time, the mold temperature chiller is started first, and the value of the error segmentation result coefficient is determined. Combined with the heat transfer oil flow and average temperature data in the temperature control channel, the temperature control cycle for feedback adjustment of the mold temperature chiller is determined after substitution and comparison. At this time, the mold temperature chiller divides the temperature control cycle into segments according to the current temperature control cycle, and then adjusts the temperature of the temperature control channels in the die-casting mold one by one according to the temperature control cycle after segmentation, so as to ensure stable molding of die-casting hardware. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 It is a structural schematic diagram of the present invention;

[0025] Figure 2 It is a side cross-sectional schematic diagram of the present invention;

[0026] Figure 3 It is a schematic cross-sectional view of the internal structure of the present invention;

[0027] Figure 4 It is a structural schematic diagram of the cavity of the present invention;

[0028] Figure 5 A top view of the cavity of the present invention;

[0029] Figure 6 It is a system flow chart of the present invention;

[0030] Figure 7 These are the system operation steps of the present invention.

[0031] In the figure: 1. movable mold body; 2. fixed mold body; 3. cushion block; 4. movable mold base plate; 5. gate sleeve; 6. side core; 7. main core; 8. main flow channel; 9. reduction area; 10. sedimentation well; 11. branch flow channel 1; 12. gate trough 1; 13. slider; 14. inclined guide column; 15. slide trough 1; 16. slide trough 2; 17. molding cavity; 18. branch flow channel 2; 19. branch flow channel 1; 20. branch flow channel 2; 21. gate trough 2; 22. gate trough 3. DETAILED DESCRIPTION

[0032] The technical scheme of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] Embodiment 1: In order to solve the problem that the temperature control of the fixed mold and the movable mold by full-stage temperature control has limited temperature control accuracy and slow response speed, the following technical solution is proposed:

[0034] Reference Figure 1 - Figure 7 As shown, in the present embodiment, a die-casting production mold for automobile precision hardware includes a mold body structure arranged in a molding machine, the mold body structure includes a movable mold body 1 and a fixed mold body 2 connected to each other, the upper end of the movable mold body 1 is provided with a fixed mold body 2 connected to the lower pressing assembly of the molding machine, the lower end of the movable mold body 1 is provided with a movable mold base plate 4 connected to the upper top assembly of the molding machine, and a cavity structure is installed between the movable mold body 1 and the fixed mold body 2, the cavity structure includes a main core 7 and a side core 6 abutting each other, a molding cavity 17 is symmetrically arranged on the main core 7, a main flow channel 8 is jointly provided in the middle of the upper side of the main core 7 and the side core 6, a diameter reduction zone 9 is provided in the portion of the main flow channel 8 extending to the upper side of the main core 7, a branch flow channel 1 11 and a branch flow channel 2 18 are symmetrically arranged at the lower end of the diameter reduction zone 9, and the ends of the branch flow channel 1 11 and the branch flow channel 2 18 are connected to the molding cavity 17;

[0035] The outer side of the movable mold body 1 and the fixed mold body 2 corresponding to the cavity structure is provided with a temperature adjustment channel connected to a mold temperature chiller. The mold temperature chiller is externally connected to a controller, and the controller is used to control the operation of the mold temperature control system. The mold temperature control system includes a parameter acquisition unit, an error segmentation management unit, a feedback adjustment unit and a temperature control management unit that are communicatively connected.

[0036] The parameter acquisition unit is used to obtain the temperature flow change value of the temperature control channel, which includes the heat transfer oil flow rate LTq and the average temperature data T 平 The process of the parameter acquisition unit obtaining the temperature flow change value of the temperature control channel is as follows: the heat transfer oil flow in the temperature control channel is collected within the time threshold and marked as LTq, at least three groups of temperature sensors are arranged along the axial direction in the temperature control channel, and the feedback adjustment unit is used to perform arithmetic averaging on the temperature data obtained by the temperature sensors arranged in the temperature control channel within the time threshold and mark the arithmetic average result as T 平 , and the heat transfer oil flow rate LTq and average temperature data T 平 Send to the feedback regulation unit;

[0037] The error segmentation management unit combines the working status of the mold temperature chiller to perform integrated analysis to obtain the error segmentation result coefficient λ. The process is as follows: If the mold temperature chiller is in working state, a conventional segmentation signal is generated and marked as λ 1 If the mold temperature chiller is not in operation, the time difference between the last time it was in the temperature adjustment state and the current time is calculated. If the time difference is less than the preset difference, a temperature adjustment pause signal λ is generated. 2 If the time difference is greater than or equal to the preset difference, a continuous temperature adjustment signal λ is generated. 3 , and send the error segmentation result coefficient λ to the feedback adjustment unit;

[0038] The feedback regulation unit numerically calculates the temperature change value of the mold temperature chiller and the temperature flow change value within the time threshold to obtain the segmented control instruction. The feedback regulation unit obtains the error segmented result coefficient λ, the heat transfer oil flow rate LTq and the average temperature data T 平 , construct the calculation formula of segmented control instruction FTD Where a, b and c are preset proportional coefficients, and a>b>c>0;

[0039] Compare and analyze the segment control instruction FTD with the preset segment control threshold:

[0040] If the segment control instruction FTD>segment control threshold, it means that the current mold temperature chiller is in working state and λ=λ 1 , generate conventional segment control instructions and send them to the temperature control management unit;

[0041] If the segment control instruction FTD is less than the segment control threshold, it means that the current mold temperature chiller is in a non-working state and λ=λ 2 , generate a shutdown command and send it to the temperature control management unit;

[0042] If the segment control instruction FTD is within the segment control threshold, it means that the current mold temperature chiller is in a non-working state and λ = λ 3 , generate a sub-segment control instruction and send it to the temperature control management unit, and determine the temperature adjustment cycle of the mold temperature chiller according to the sub-segment control instruction.

[0043] Basic principle: First, a brief description of the die-casting process is given: before the die-casting process of automobile precision hardware is carried out, the mold structure is preheated in advance, and then the molten metal liquid of the hardware is injected into the molding cavity 17, and the molten metal liquid is injected into the molding cavity 17 through the main channel 8, the reduction zone 9 and the branch channel 1 11 and the branch channel 2 18 in turn, and the pressurization and casting processes are carried out normally. The setting position of the temperature adjustment channel is not drawn in the attached figure, and it can be understood as a surrounding channel with the same wall thickness as the cavity; at this time, the error segmentation result coefficient is determined according to the real-time working status of the current mold temperature chiller, and the execution temperature and operation cycle of the current mold temperature chiller are determined by the error segmentation result coefficient, and the temperature intelligent control in the die-casting process is realized by the segmented execution temperature and operation cycle temperature control method, so as to achieve the purpose of lateral differentiation comparison between temperature data for each time period during the operation of the die-casting mold, and reduce the probability of low temperature control accuracy and slow response speed caused by the temperature control method based only on the real-time temperature response of the die-casting mold.

[0044] The following is a detailed description of the action execution process of the mold temperature control system:

[0045] When the temperature control management unit receives the conventional segmented control instruction: this indicates that the mold temperature chiller is in normal operation, and the error segmented result coefficient value, the heat transfer oil flow rate and the average temperature data in the current temperature adjustment channel are determined, and the temperature adjustment cycle for feedback adjustment of the mold temperature chiller is determined after being substituted into the formula and compared. At this time, the mold temperature chiller divides the temperature adjustment cycle into conventional segments according to the currently obtained temperature adjustment cycle, and then adjusts the temperature of the temperature adjustment channels in the die-casting mold one by one according to the temperature adjustment cycle after the segmentation, so as to ensure the stable molding of the die-casting hardware;

[0046] When the temperature control management unit receives a shutdown command, the mold temperature chiller is in a non-operating state and no startup control is performed;

[0047] When the temperature control management unit receives the re-segmentation control instruction, since the mold temperature chiller is in a non-working state at this time, the mold temperature chiller is started first, and the error segmentation result coefficient value is determined. Combined with the heat transfer oil flow and average temperature data in the temperature adjustment channel, the temperature adjustment cycle for feedback adjustment of the mold temperature chiller is determined after substitution and comparison. At this time, the mold temperature chiller divides the temperature adjustment cycle into segments according to the current obtained temperature adjustment cycle, so as to adjust the temperature of the temperature adjustment channels in the die-casting mold one by one according to the temperature adjustment cycle after the segmentation, so as to ensure the stable molding of the die-casting hardware.

[0048] It is important to note that the temperature control process in the die-casting mold production process implemented by the present invention is similar to that in the prior art, with the difference being that the error segmentation result coefficient is determined based on the real-time working status of the current mold temperature chiller, and the execution temperature and operation cycle of the current mold temperature chiller are determined by the error segmentation result coefficient, and the temperature intelligent control in the die-casting process is achieved by a segmented execution temperature and operation cycle temperature control method, thereby achieving the purpose of lateral differentiation comparison between temperature data for each time period during the operation of the die-casting mold, and reducing the probability of low temperature control accuracy and slow response speed caused by temperature control based only on the real-time temperature response of the die-casting mold.

[0049] Embodiment 2: This embodiment further optimizes the structure based on the temperature control process in Embodiment 1:

[0050] Reference Figure 1-Figure 5 As shown, the two ends of the lower side of the movable mold body 1 are equipped with cushion blocks 3, and the lower end of the cushion blocks 3 is equipped with a movable mold base plate 4. In addition to the above structure, it also includes a slider 13 and an inclined guide column 14 arranged in the first slide groove 15 and the second slide groove 16, and other conventional structural arrangements in the field, which will not be described in detail here;

[0051] A gate sleeve 5 is installed on the main flow channel 8 at the upper end of the fixed mold body 2, and a sedimentation well 10 is arranged between the main flow channel 8 and the branch flow channel 11 symmetrically arranged at the lower part, which is used to buffer the rapid temperature change caused by the rapid impact during the injection of the molten metal;

[0052] The end of the branch channel 11 is provided with a gate groove 12 connected to the molding cavity 17, and the end of the branch channel 2 18 is also provided with a branch channel 19 and a branch channel 20 both connected to the molding cavity 17. The ends of the branch channel 19 and the branch channel 20 are also provided with a gate groove 3 22 and a gate groove 21 connected to the molding cavity 17. The setting here is also to prevent overflow during the molding process after the molten metal is injected and to reduce the direct impact of the molten metal on the molding cavity 17, so as to ensure stable temperature control in the later stage.

[0053] Embodiment 3: This embodiment combines the technical contents of Embodiment 1 and Embodiment 2 to form the following control method and principle, including the following steps:

[0054] Step 1: Before the die-casting process of automobile precision hardware, the mold structure is preheated in advance, and then the molten metal liquid of the hardware is injected into the molding cavity 17. The molten metal liquid is injected into the molding cavity 17 through the main channel 8, the reduced diameter area 9, the branch channel 1 11 and the branch channel 2 18 in sequence, and the pressurization and casting process are carried out normally;

[0055] Step 2: During the injection of molten metal into the hardware, the flow rate of the heat transfer oil in the temperature control channel is collected and marked as LTq. At least three groups of temperature sensors are arranged along the axial direction in the temperature control channel. The feedback adjustment unit is used to perform arithmetic averaging on the temperature data obtained by the temperature sensors arranged in the temperature control channel within the time threshold and mark the arithmetic average result as T 平 ;

[0056] Step 3: If the mold temperature chiller is in operation, a conventional segmented signal is generated and marked as λ 1 If the mold temperature chiller is not in operation, the time difference between the last time it was in the temperature adjustment state and the current time is calculated. If the time difference is less than the preset difference, a temperature adjustment pause signal λ is generated. 2 If the time difference is greater than or equal to the preset difference, a continuous temperature adjustment signal λ is generated. 3 ;

[0057] Step 4: According to Based on the error segmentation result coefficient λ, the heat transfer oil flow rate LTq and the average temperature data T 平 , calculate the current segment control instruction FTD, and compare and analyze it with the preset segment control threshold, and generate conventional segment control instructions, shutdown instructions and re-segment control instructions;

[0058] Step 5: Use conventional segmented control instructions, shutdown instructions and re-segmented control instructions to respectively execute the actions of the mold temperature chiller, thereby completing the periodic and detailed adjustment of the temperature in the temperature control channel, achieving higher temperature control accuracy and response speed to meet the purpose of stable molding of precision hardware.

[0059] In summary: On the one hand, the present invention determines the error segmentation result coefficient based on the real-time working state of the current mold temperature chiller, and determines the execution temperature and operation cycle of the current mold temperature chiller by the error segmentation result coefficient, and realizes the intelligent temperature control in the die-casting process by the segmented execution temperature and operation cycle temperature control method, thereby achieving the purpose of completing the lateral differentiation comparison between the temperature data for each time period during the operation of the die-casting mold, and reducing the probability of low temperature control accuracy and slow response speed caused by the temperature control method based only on the real-time temperature response of the die-casting mold;

[0060] On the other hand, in the process of segmented temperature control, since the mold temperature chiller is in a non-working state, the mold temperature chiller is started first, and the value of the error segmentation result coefficient is determined. Combined with the heat transfer oil flow and average temperature data in the temperature control channel, the temperature control cycle for feedback adjustment of the mold temperature chiller is determined after substitution and comparison. At this time, the mold temperature chiller divides the temperature control cycle into segments according to the current temperature control cycle, so as to adjust the temperature of the temperature control channels in the die-casting mold one by one according to the temperature control cycle after segmentation, so as to ensure stable molding of die-casting hardware.

[0061] The above formulas are obtained by collecting a large amount of data for software simulation and selecting a formula that is close to the actual value. The coefficients in the formula are set by technical personnel in this field according to actual conditions. The above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited to this. Any technical personnel familiar with the technical field within the technical scope disclosed by the present invention, according to the technical solution and the inventive concept of the present invention, make equivalent replacement or change, which should be covered within the protection scope of the present invention.

[0062] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0063] The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the present invention to only specific implementation methods.

Claims

1. A die-casting production mold for automobile precision hardware, comprising a mold structure arranged in a molding machine, the mold structure comprising a movable mold body (1) and a fixed mold body (2) connected to each other, characterized in that: The upper end of the movable mold body (1) is provided with a fixed mold body (2) connected to the lower pressing component of the molding machine, and the lower end of the movable mold body (1) is provided with a movable mold base plate (4) connected to the upper top component of the molding machine. A cavity structure is installed between the movable mold body (1) and the fixed mold body (2). The outer sides of the movable mold body (1) and the fixed mold body (2) corresponding to the cavity structure are provided with temperature adjustment channels connected to a mold temperature chiller at the same wall thickness. The mold temperature chiller is externally connected to a controller, and the controller is used to control the operation of the mold temperature control system. The mold temperature control system includes a parameter acquisition unit, an error segmentation management unit, a feedback adjustment unit and a temperature control management unit that are communicatively connected. The parameter acquisition unit is used to obtain the temperature flow change value of the temperature adjustment channel, and the temperature flow change value includes the heat transfer oil flow rate LTq and the average temperature data T 平 , and the heat transfer oil flow rate LTq and average temperature data T 平 Send to the feedback regulation unit; The error segmentation management unit performs integrated analysis based on the working state of the mold temperature chiller to obtain the error segmentation result coefficient λ, and sends the error segmentation result coefficient λ to the feedback adjustment unit; The feedback regulation unit numerically calculates the mold temperature chiller and temperature flow change value within the time threshold to obtain a segmented regulation instruction, and determines the temperature regulation cycle of the mold temperature chiller according to the segmented regulation instruction; The temperature control management unit is used to execute the temperature adjustment process of the mold temperature chiller to ensure accurate temperature adjustment; The feedback adjustment unit obtains the error segmentation result coefficient λ, the heat transfer oil flow LTq and the average temperature data T 平 , construct the calculation formula of segmented control instruction FTD Wherein a, b and c are preset proportional coefficients, and a>b>c>0.

2. The die-casting production mold for automobile precision hardware according to claim 1, characterized in that: The mold cavity structure comprises a main mold core (7) and a side mold core (6) that are in contact with each other, and a molding cavity (17) is symmetrically arranged on the main mold core (7).

3. The die-casting production mold for automobile precision hardware according to claim 2, characterized in that: A main flow channel (8) is provided in the middle of the upper side of the main mold core (7) and the side mold core (6); a diameter reduction zone (9) is provided in the portion of the main mold core (8) extending to the upper side of the main mold core (7); a first branch flow channel (11) and a second branch flow channel (18) are symmetrically arranged at the lower end of the diameter reduction zone (9); the ends of the first branch flow channel (11) and the second branch flow channel (18) are connected to the molding cavity (17).

4. The die-casting production mold for automobile precision hardware according to claim 1, characterized in that: The process of the parameter acquisition unit acquiring the temperature flow change value of the temperature adjustment channel is as follows: the heat transfer oil flow in the temperature adjustment channel is collected within the time threshold and marked as LTq, at least three groups of temperature sensors are arranged in the temperature adjustment channel along the axial direction, and the feedback adjustment unit is used to perform arithmetic averaging on the temperature data acquired by the temperature sensors arranged in the temperature adjustment channel within the time threshold and mark the arithmetic average result as T 平 .

5. The die-casting production mold for automobile precision hardware according to claim 4, characterized in that: The error segmentation management unit obtains the working status of the mold temperature chiller and obtains the error segmentation result coefficient λ: if the mold temperature chiller is in a working state, a conventional segmentation signal is generated and marked as λ1; if the mold temperature chiller is in a non-working state, the time difference between the last time it was in a temperature adjustment state and the current time is calculated. If the time difference is less than a preset difference, a pause temperature adjustment signal λ2 is generated; if the time difference is greater than or equal to the preset difference, a continuous temperature adjustment signal λ3 is generated.

6. The die-casting production mold for automobile precision hardware according to claim 5, characterized in that: The feedback regulation unit compares and analyzes the segment control instruction FTD with the preset segment control threshold: If the segment control instruction FTD>segment control threshold, it means that the current mold temperature chiller is in working state and λ=λ1, and a conventional segment control instruction is generated and sent to the temperature control management unit; If the segment control instruction FTD is less than the segment control threshold, it means that the current mold temperature chiller is in a non-operating state and λ=λ2, and a shutdown instruction is generated and sent to the temperature control management unit; If the segment control instruction FTD is within the segment control threshold, it means that the current mold temperature chiller is in a non-working state and λ=λ3, and a re-segment control instruction is generated and sent to the temperature control management unit.

7. The die-casting production mold for automobile precision hardware according to claim 6, characterized in that: The temperature control management unit sends conventional segment control instructions, shutdown instructions and re-segment control instructions to the mold temperature chiller to execute relevant control actions.

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