Die-casting returned material conveying equipment and system and control method
By designing a die-casting return material conveying equipment and control system, the problem of unstable furnace temperature during the waste recycling process was solved, realizing automated and continuous conveying and smelting of waste materials, and improving the efficiency and quality stability of aluminum lamp housing production.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-25
- Publication Date
- 2026-04-10
AI Technical Summary
In the current production of aluminum lamp housings, there is a disconnect between the amount of waste material fed into the furnace and the control of the furnace temperature during the waste recycling process. This leads to unstable furnace temperature, which affects the fluidity of the molten aluminum and the quality of the die-cast parts.
Design a die casting return material conveying equipment and control system. Through the structural design of the return material conveyor belt and the discharge channel, combined with temperature sensors and heating devices, the system can achieve precise control of the waste material conveying volume, time and interval, and ensure that the furnace temperature is stable within the range of 679℃~681℃.
It improves the accuracy and efficiency of waste smelting, ensures stable quality of aluminum lamp housings, realizes the automation and continuity of waste recycling, and reduces energy consumption and labor costs.
Smart Images
Figure CN121820588A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of lamp parts die casting processing, in particular to a die casting return material conveying device, system and control method. BACKGROUND
[0002] A large amount of aluminum waste such as sprue, overflow tank and waste parts will be generated in the production process of aluminum lamp shell and other die castings. In order to realize efficient utilization of resources and control of production cost, these waste materials are usually recycled and remelted in the production process of aluminum lamp shell, and then put into the die casting production cycle of aluminum lamp shell.
[0003] The traditional way of returning waste materials in the production of aluminum lamp shell is to put the waste materials into the furnace intermittently by manual operation after the waste materials are concentrated. The above-mentioned method has great difficulty in controlling the amount and timing of waste material feeding, and it is easy to cause the temperature of aluminum liquid in the furnace to fluctuate sharply due to excessive or too fast feeding at one time, which directly affects the flowability, chemical composition uniformity of aluminum liquid and internal quality of subsequent die castings, and easily produces defects such as pores and shrinkage, thereby affecting the yield and performance stability of lamp shell products.
[0004] In order to overcome the defects in the manual return operation of waste materials, conveying belts and other equipment are used on the production line to replace manual operation for continuous conveying of waste materials. However, the existing automatic conveying scheme of waste materials fails to deeply associate and cooperatively control the conveying process with the furnace temperature, and the automatic conveying is disconnected from the actual thermal state of the furnace in terms of waste material conveying amount, conveying rhythm, which still has the possibility of causing the furnace temperature to be unstable. SUMMARY
[0005] In view of the technical defects in the background art, the present application provides a die casting return material conveying device, system and control method, which solves the above-mentioned technical problems and meets the actual needs. The specific technical scheme is as follows: The present application discloses a die casting return material conveying device, which is arranged in the production line of aluminum lamp shell die casting processing, the waste material output end of the production line is connected to the material input end of the device, and the feeding end of the production line is connected to the material output end of the device, comprising: A return material conveying belt one is arranged at the material input end of the device through a connecting support frame one, and the input end thereof is connected to the waste material output end of the production line; A return material conveying belt two is connected to the output end of the return material conveying belt one through an input end and forms a butt joint section one, and the return material conveying belt two is connected to a support frame two; A discharging channel is arranged at the output end of the return material conveying belt two, and the input end thereof is connected to the output end of the return material conveying belt two, and the discharging channel is arranged in an inclined form. a furnace arranged at the material output end of the equipment and the feeding end of the production line, and the lower material channel and the input end of the furnace form a second joint section; The surface of the first return material conveying belt is provided with a plurality of partitions in equidistant intervals, and a plurality of grooves for placing materials between adjacent two partitions are formed on the surface of the inclined side of the first return material conveying belt.
[0006] As a further improvement of the present application, the length of the surface of the inclined side of the first return material conveying belt is L1, the length of the first joint section is L2, the length of the surface of the second return material conveying belt is L3, the length of the surface of the inclined side of the lower material channel is L4, and the length of the second joint section is L5.
[0007] As a further improvement of the present application, the total length of the surface of the first return material conveying belt for conveying materials is L6, the number of partitions provided on the first return material conveying belt is n, the length of the groove is L7 and L7=L6 / n, and the length of the material placed in the groove is L8 and L8
[0008] As a further improvement of the present application, the first return material conveying belt is connected to the top end of the support frame in an inclined manner, the first joint section is a path formed from high to low for conveying materials from the output end of the first return material conveying belt to the input end of the second return material conveying belt, and the input end of the first return material conveying belt is located at the low position.
[0009] As a further improvement of the present application, the second joint section is a path formed from high to low for conveying materials from the output end of the lower material channel to the input end of the furnace.
[0010] As a further improvement of the present application, the furnace is connected with a heating device, the heating device heats the furnace and maintains the furnace temperature at 679-681℃ when the furnace is working, and a temperature sensor for sensing the furnace temperature is arranged in the furnace.
[0011] The present application also discloses a die-casting return material conveying system, which is used for controlling the die-casting return material conveying equipment, and comprises: a control console for inputting a control instruction one for controlling the start and stop of the heating device and the temperature sensor, and being communicatively connected with the heating device and the temperature sensor to realize transmission of the control instruction one; a furnace temperature control unit for presetting a control instruction two for heating the furnace temperature, and being communicatively connected with the heating device to realize transmission of the control instruction two; A speed control unit generates a control instruction three for controlling the operation state of the transmission device one and the transmission device two according to the furnace temperature data fed back by the temperature sensor, and is connected with the transmission device one and the transmission device two respectively to realize the transmission of the control instruction three; A feeding control unit generates a control instruction four for controlling the waste feeding operation according to the furnace temperature data fed back by the temperature sensor, and is connected with the external waste feeding equipment to realize the transmission of the control instruction four.
[0012] The application further discloses a die casting waste feeding control method, which is executed by the control system, and comprises the following steps: S1, sending an instruction one to the heating device and the temperature sensor through the control console, so that the heating device is started and the temperature sensor senses the furnace temperature of the melting furnace; S2, the heating device heats the melting furnace to 680 DEG C, and the furnace temperature control unit is preset to have a heating rate of 2 DEG C per minute, so that the melting furnace is heated at the preset heating rate in the subsequent waste melting furnace; S3, the speed control unit sends a control instruction three to the transmission device one and the transmission device two, so that the transmission device one and the transmission device two are started; S4, the feeding control unit sends a control instruction four to the external waste feeding equipment to perform the waste feeding operation; S5, the waste is sequentially conveyed through the waste feeding belt one and the waste feeding belt two and the discharging channel, and finally falls into the melting furnace for smelting, and the speed control unit controls the running speed of the transmission device one and the transmission device two, so that the waste conveying process time is controlled to be 25-30 seconds.
[0013] As a further improvement of the application, in step S2, the furnace temperature control unit compares the real-time furnace temperature data sensed by the temperature sensor with the preset working temperature range, controls the operation of the heating device to which the control instruction two is transmitted by the furnace temperature control unit, and executes the following conditions: If the real-time furnace temperature is lower than 679 DEG C, the control instruction two instructs the heating device to increase the heating power; If the real-time furnace temperature is higher than 681 DEG C, the control instruction two instructs the heating device to reduce the heating power or suspend the heating; If the real-time furnace temperature is between 679 DEG C and 681 DEG C, the control instruction two instructs the heating device to maintain the current heating power.
[0014] As a further improvement of the application, in step S3, the speed control unit generates the control instruction three, and the way of coordinating the control of the transmission device one and the transmission device two comprises the following steps: S301, set the target transmission speed V1 of the first material return conveyor according to the waste output rate of the production line; S302, based on the target transmission speed V1 of the first material return conveyor, the number of partitions n and the length L7 of the groove, calculate and set the target transmission speed V2 of the second material return conveyor to ensure smooth transition of the material at the first docking section and prevent accumulation or flow interruption; S303, the speed control unit dynamically adjusts the running speed of the transmission device one: when the furnace temperature approaches or is lower than the lower limit of the working temperature range, reduce V1 to reduce the feed amount; when the furnace temperature is stable in the working temperature range, restore or maintain V1 to the normal feed speed.
[0015] The beneficial effects of the present application are: the die casting material return conveying equipment controls the waste conveying amount, time and interval, closely associates the waste conveying process with the smelting temperature, avoids the situation that the furnace temperature decreases too fast due to one-time excessive waste feeding, improves the accuracy of waste feeding into the smelting furnace during the aluminum lamp shell die casting process, ensures the quality stability of the waste feeding into the smelting furnace, keeps the furnace temperature more stable, realizes the automation, continuity and intelligence of the aluminum die casting waste recycling and conveying, is conducive to improving the aluminum lamp shell die casting production efficiency and ensuring the quality stability of the die casting aluminum lamp shell. BRIEF DESCRIPTION OF DRAWINGS
[0016] Figure 1 Structure diagram of the die casting material return conveying equipment Figure 1 .
[0017] Figure 2 Structure diagram of the die casting material return conveying equipment Figure 2 .
[0018] Figure 3 Schematic diagram of the first docking section.
[0019] Figure 4 Schematic diagram of the second docking section.
[0020] Figure 5 Structure diagram of the heating device and temperature sensor installed to the smelting furnace.
[0021] Figure 6 Principle diagram of the die casting material return conveying system.
[0022] Figure 7 Principle diagram of the die casting material return conveying control method.
[0023] Figure 8 Principle diagram of the furnace temperature control unit controlling the furnace temperature in step S2.
[0024] Figure 9A schematic diagram of the manner of generating control instruction three for the speed control unit in step S3 and coordinating control of the transmission device one and the transmission device two.
[0025] In the figure, 1, return material conveying belt one; 11, partition; 12, groove; 13, transmission device one; 14, support frame one; 2, return material conveying belt two; 21, support frame two; 22, transmission device two; 3, butt joint section one; 4, discharging channel; 5, furnace; 6, butt joint section two; 7, heating device; 8, temperature sensor; 101, control console; 102, furnace temperature control unit; 103, speed control unit; 104, feeding control unit. DETAILED DESCRIPTION
[0026] The embodiments of the present application will be described below in conjunction with the accompanying drawings and related embodiments: The present application discloses a kind of die casting return material conveying equipment, such as Figure 1 And Figure 2 Combination is shown, the equipment is arranged in the production flow line of aluminum lamp shell die casting processing, the waste output end of the production flow line is connected with the material input end of the equipment, the feeding end of the production flow line is connected with the material output end of the equipment, comprising: Return material conveying belt one 1 is arranged at the material input end of the equipment by connecting support frame one 14, and its input end is connected with the waste output end of the production flow line; The input end of return material conveying belt two 2 is connected with the output end of return material conveying belt one 1 and forms butt joint section one 3, and support frame two 21 is connected to return material conveying belt two 2; Discharging channel 4 is arranged at the output end of return material conveying belt two 2, and its input end is connected with the output end of return material conveying belt two 2 to form material conveying butt joint, and the discharging channel 4 is arranged in the form of inclination; Furnace 5 is arranged at the material output end of the equipment and the feeding end of the production flow line, and butt joint section two 6 is formed between the input end of the discharging channel 4 and the furnace 5; Among them, the surface of return material conveying belt one 1 is provided with a plurality of partitions 11 in the form of equidistant spacing, and a plurality of grooves 12 for placing materials between adjacent two partitions 11 are formed on the inclined side surface of return material conveying belt one 1, and return material conveying belt one 1 and return material conveying belt two 2 are driven by transmission device one 13 and transmission device two 22 respectively.
[0027] It is to be noted that the return material conveying belt one 1 is arranged at the material input end of the device through the connecting support frame one 14 and is driven by the transmission device one 13; the support frame one 14 erects the return material conveying belt one 1 at an inclined angle, so that the input end is located at a lower position to smoothly butt joint with the waste material output end of the production line for receiving the waste material; the several partitions 11 on the surface of the return material conveying belt one 1 form several groove bodies 12 on the load bearing surface of the inclined side of the return material conveying belt one 1, each groove body 12 is used to contain and convey a certain amount of waste material, and plays a role of regularizing the material and preventing the material from rolling back or scattering; the return material conveying belt two 2 is supported by the support frame two 21 and is driven by the transmission device two 22, the input end of the return material conveying belt two 2 is close to the output end of the return material conveying belt one 1 in space to form a butt joint section one 3 to realize material transfer; the discharging channel 4 receives the waste material from the return material conveying belt two 2, the discharging channel 4 is arranged in an inclined form as a whole, the internal channel is smooth to guide the waste material to slide down along the inclined surface; the furnace 5 is arranged at the material output end of the device and is butt jointed with the feed end of the die casting machine (not shown in the figure) of the aluminum lamp shell production line to supply the molten aluminum liquid to the die casting production; by controlling the conveying amount, time and interval of the waste material, the stability of the furnace temperature of the furnace 5 is maintained to ensure the product quality.
[0028] It needs to be further explained that, as Figures 2 to 4 It is to be noted that the return material conveying belt one 1 is arranged at the material input end of the device through the connecting support frame one 14 and is driven by the transmission device one 13; the support frame one 14 erects the return material conveying belt one 1 at an inclined angle, so that the input end is located at a lower position to smoothly butt joint with the waste material output end of the production line for receiving the waste material; the several partitions 11 on the surface of the return material conveying belt one 1 form several groove bodies 12 on the load bearing surface of the inclined side of the return material conveying belt one 1, each groove body 12 is used to contain and convey a certain amount of waste material, and plays a role of regularizing the material and preventing the material from rolling back or scattering; the return material conveying belt two 2 is supported by the support frame two 21 and is driven by the transmission device two 22, the input end of the return material conveying belt two 2 is close to the output end of the return material conveying belt one 1 in space to form a butt joint section one 3 to realize material transfer; the discharging channel 4 receives the waste material from the return material conveying belt two 2, the discharging channel 4 is arranged in an inclined form as a whole, the internal channel is smooth to guide the waste material to slide down along the inclined surface; the furnace 5 is arranged at the material output end of the device and is butt jointed with the feed end of the die casting machine (not shown in the figure) of the aluminum lamp shell production line to supply the molten aluminum liquid to the die casting production; by controlling the conveying amount, time and interval of the waste material, the stability of the furnace temperature of the furnace 5 is maintained to ensure the product quality.
[0029] It is to be noted that the return material conveying belt one 1 is arranged at the material input end of the device through the connecting support frame one 14 and is driven by the transmission device one 13; the support frame one 14 erects the return material conveying belt one 1 at an inclined angle, so that the input end is located at a lower position to smoothly butt joint with the waste material output end of the production line for receiving the waste material; the several partitions 11 on the surface of the return material conveying belt one 1 form several groove bodies 12 on the load bearing surface of the inclined side of the return material conveying belt one 1, each groove body 12 is used to contain and convey a certain amount of waste material, and plays a role of regularizing the material and preventing the material from rolling back or scattering; the return material conveying belt two 2 is supported by the support frame two 21 and is driven by the transmission device two 22, the input end of the return material conveying belt two 2 is close to the output end of the return material conveying belt one 1 in space to form a butt joint section one 3 to realize material transfer; the discharging channel 4 receives the waste material from the return material conveying belt two 2, the discharging channel 4 is arranged in an inclined form as a whole, the internal channel is smooth to guide the waste material to slide down along the inclined surface; the furnace 5 is arranged at the material output end of the device and is butt jointed with the feed end of the die casting machine (not shown in the figure) of the aluminum lamp shell production line to supply the molten aluminum liquid to the die casting production; by controlling the conveying amount, time and interval of the waste material, the stability of the furnace temperature of the furnace 5 is maintained to ensure the product quality.
[0030] Specifically, asFigure 2 and Figure 3 As shown in combination, the total length of the surface of the return material conveying belt one 1 for conveying material is denoted as L6, the number of partitions 11 arranged on the return material conveying belt one 1 is denoted as n, the length of the groove 12 is L7 and L7 = L6 / n, and the length of the material placed in the groove 12 is denoted as L8 and L8 < L7.
[0031] In actual work, in order to prevent the material from being blocked or interfering with each other, the actual length of the material placed in the groove 12 L8 should be less than the theoretical length of the groove 12 L7, i.e. L8 < L7, to ensure the reliability of the transmission, and the parameters of L6, L7 and L8 provide a basis for the control of the waste conveying process by the equipment, so as to better control the waste conveying to meet the needs of die casting production.
[0032] Specifically, as shown in Figure 1 and Figure 3 As shown in combination, the return material conveying belt one 1 is connected to the top end of the support frame one 14 in an inclined arrangement, the butt joint section one 3 is a path formed from high to low conveying material in the direction from the output end of the return material conveying belt one 1 to the input end of the return material conveying belt two 2, and the input end of the return material conveying belt one 1 is located at a low position.
[0033] Among them, the input end of the return material conveying belt one 1 is low, the output end is high, the butt joint section one 3 is a material downward path from the output end of the return material conveying belt one 1 to the input end of the return material conveying belt two 2, and the butt joint section two 6 is a material downward path from the output end of the discharging channel 4 to the input end of the furnace 5, so that the equipment transmission path forms a relay conveying mode from low to high and then to low, fully utilizes the terrain and gravity, and reduces energy consumption and equipment complexity.
[0034] More specifically, as shown in Figure 1 and Figure 4 As shown in combination, the butt joint section two 6 is a path formed from high to low conveying material in the direction from the output end of the discharging channel 4 to the input end of the furnace 5.
[0035] Among them, the output end of the discharging channel 4 and the feed inlet of the furnace 5 form a butt joint section two 6 with a height difference, so that the waste can fall into the furnace 5 through the butt joint section two 6 by gravity, further utilizing the terrain and gravity to adjust the transmission direction of the waste, and further meeting the needs of different die casting machines when using the equipment to provide aluminum liquid for die casting production.
[0036] It needs to be further explained that, as shown in Figure 5 The furnace 5 is connected with the heating device 7, the heating device 7 heats the furnace 5 and maintains the furnace temperature at 679℃-681℃ when the furnace 5 is working, and the furnace 5 is provided with a temperature sensor 8 for sensing the furnace temperature.
[0037] The furnace 5 is connected with a heating device 7, which is an electric resistance heater, a gas burner or the like, and is used for heating and melting the aluminum material in the furnace.
[0038] The application further discloses a die-casting return material conveying system. Figure 6 The control system is used for controlling the die-casting return material conveying device, and comprises: A control console 101 is used for inputting a control instruction one for controlling the heating device 7 and the temperature sensor 8, and is respectively connected with the heating device 7 and the temperature sensor 8 to realize transmission of the control instruction one. A furnace temperature control unit 102 is preset to form a control instruction two for heating the temperature in the furnace, and is connected with the heating device 7 to realize transmission of the control instruction two. A speed control unit 103 is used for generating a control instruction three for controlling the running states of the transmission device one 13 and the transmission device two 22 according to the temperature data in the furnace fed back by the temperature sensor 8, and is respectively connected with the transmission device one 13 and the transmission device two 22 to realize transmission of the control instruction three. A feeding control unit 104 is used for forming a control instruction four for controlling the feeding operation of the waste material according to the temperature data in the furnace fed back by the temperature sensor 8, and is connected with an external waste material feeding device to realize transmission of the control instruction four.
[0039] It should be noted that the control system includes a control console 101, a furnace temperature control unit 102, a speed control unit 103, and a feeding control unit 104. The control console 101 serves as a human-machine interface for operators to input control commands. The first control command it sends is used to start or stop the heating device 7 and the temperature sensor 8. The control console 101 is connected to the heating device 7 and the temperature sensor 8 via communication lines to transmit commands and data. The furnace temperature control unit 102 has preset temperature control logic and can generate a second control command to adjust the furnace temperature. This unit is communicatively connected to the heating device 7 and sends the second control command to the heating device 7 to adjust its heating power. The speed control unit 103 adjusts the speed based on feedback from the temperature sensor 8. The system analyzes and calculates real-time furnace temperature data to generate control command three for controlling the operation of transmission device 13 and transmission device 22. Speed control unit 103 is connected to the drivers of transmission device 13 and transmission device 22 respectively and sends control command three to coordinate the running speed of the two conveyor belts. Similarly, the feeding control unit 104 generates control command four based on the furnace temperature data fed back by temperature sensor 8 and the production cycle. This command is used to control the action of the external waste feeding equipment and determine when to feed waste onto the return material conveyor belt 1. The feeding control unit 104 is connected to the external waste feeding equipment through a communication interface. The system realizes automated and intelligent management of the conveying process and melting temperature of the die casting return material conveying equipment.
[0040] This invention also discloses a method for controlling the conveying of die-casting return material, such as... Figure 7 As shown, the method, executed by the aforementioned control system, includes the following steps: S1, The operator sends a command to the heating device and temperature sensor through the console, so that the heating device starts and heats up the furnace, and the temperature sensor senses the furnace temperature. This step is when the operator sends a start command to the heating device and temperature sensor through the console during system initialization, so that the heating device starts to heat up the furnace, and the temperature sensor starts to work, continuously senses the furnace temperature and feeds the data back to the control system. S2, the heating device heats the furnace to 680°C, and the furnace temperature control unit presets a heating rate of 2°C per minute, so that the furnace heats up in the subsequent waste melting furnace according to the preset heating rate; in this step, the heating device raises the temperature of the furnace to the target working temperature of 680°C, and the furnace temperature control unit presets a heating program with a heating rate of 2°C per minute in the subsequent waste melting process, and the heating device heats according to this preset program.
[0041] S3, the speed control unit sends control instruction three to transmission device one and transmission device two, so that the transmission device one and the transmission device two start; in this step, when the furnace temperature reaches or approaches the working range, the speed control unit sends control instruction three to the transmission device one and the transmission device two, and the return material conveying belt one and the return material conveying belt two start to run, so that the operation of the return material conveying belt one and the return material conveying belt two becomes more intelligent, avoiding the empty running of the return material conveying belt one and the return material conveying belt two, thereby reducing the energy consumption of waste material transmission; S4, the feeding control unit sends control instruction four to the external waste feeding device to perform waste feeding operation; in this step, after confirming that the conveying system has started and the furnace temperature is normal, the feeding control unit sends control instruction four to the external waste feeding device, and the external waste feeding device starts to act according to the instruction to orderly put the waste generated by the die casting production line into the input end of the return material conveying belt one; S5, the waste is conveyed in sequence through the return material conveying belt one, the return material conveying belt two and the discharging channel, and finally falls into the furnace for smelting; the running speed of the transmission device one and the transmission device two is controlled by the speed control unit, so that the waste transmission process time is controlled within 25-30 seconds; in this step, the waste is conveyed in the groove of the return material conveying belt one, transferred to the return material conveying belt two through the butt joint section one, conveyed to the output end of the return material conveying belt two, and then falls into the furnace through the discharging channel and the butt joint section two for smelting; the whole process time from entering the return material conveying belt one to falling into the furnace is controlled within 25-30 seconds by accurately controlling the running speed of the transmission device one and the transmission device two, which takes into account the conveying efficiency and the buffer of the impact on the furnace temperature.
[0042] The control method realizes the automation, continuity and intelligence of the aluminum die casting waste recycling and conveying by controlling the combination of the equipment and the system, improves the production efficiency, reduces the energy consumption and labor cost, and ensures the quality stability of the recycled material.
[0043] It should be further pointed out that, as Figure 7 and Figure 8 In step S2, the furnace temperature control unit compares the real-time furnace temperature data sensed by the temperature sensor with the preset working temperature range, controls the operation of the heating device according to the control instruction two transmitted by the furnace temperature control unit, and executes according to the following conditions: If the real-time furnace temperature is lower than 679℃, the control instruction two instructs the heating device to increase the heating power; If the real-time furnace temperature is higher than 681℃, the control instruction two instructs the heating device to reduce the heating power or suspend the heating; If the real-time furnace temperature is between 679℃ and 681℃, the control instruction two instructs the heating device to maintain the current heating power.
[0044] In the furnace temperature control unit, a preset temperature rising program is set, the temperature rising rate is set to 2℃ per minute, the heating device heats according to the preset program, the temperature of the furnace is stably raised to the target working temperature, and in the process and subsequent continuous working, the furnace temperature control unit performs closed-loop control, that is, the furnace temperature data sensed by the temperature sensor is received in real time, and compared with the preset working temperature in the range of 679℃~681℃, and the control instruction two sent to the heating device is dynamically adjusted according to the comparison result, so as to intelligently control the heating operation of the heating device on the furnace, and then the effect of self-adaptive adjustment of the furnace temperature is achieved.
[0045] Specifically, as shown in the drawings, in step S3, the speed control unit generates control instruction three, and the way of coordinating the control of the transmission device one and the transmission device two includes the following steps: Figure 7 And Figure 9 In combination with the drawings, in step S3, the speed control unit generates control instruction three, and the way of coordinating the control of the transmission device one and the transmission device two includes the following steps: S301, according to the waste output rate of the production line, the target transmission speed V1 of the return material conveyor belt one is set; wherein, according to the actual production rhythm and the waste production rate of the upstream aluminum lamp shell die-casting production line, the target transmission speed V1 of the return material conveyor belt one is set, and the setting of V1 needs to match the waste output rate to avoid blockage at the receiving end; S302, based on the target transmission speed V1 of the return material conveyor belt one, the number of partitions n and the length L7 of the groove, the target transmission speed V2 of the return material conveyor belt two is calculated and set to ensure smooth transition of the material at the butt joint section one without accumulation or flow interruption; wherein, based on the target transmission speed V1 of the return material conveyor belt one, the number of partitions n and the length L7 of the groove, the target transmission speed V2 of the return material conveyor belt two is calculated and set, the purpose is to ensure smooth transition of the material at the butt joint section one, neither because V2 is too slow to cause material accumulation at the transfer point, nor because V2 is too fast to cause material flow interruption or pulling, and V2 usually maintains a certain proportional relationship or synchronous relationship with V1; S303, the speed control unit dynamically adjusts the running speed of the transmission device one: when the furnace temperature approaches or is lower than the lower limit of the working temperature range, reduce V1 to reduce the feeding amount; when the furnace temperature is stable in the working temperature range, restore or maintain V1 to the normal feeding speed; wherein, the speed control unit adjusts the running speed of the transmission device one according to the furnace temperature data fed back by the temperature sensor, specifically: when the furnace temperature approaches or is lower than 679℃, it means that the heating capacity of the furnace is temporarily insufficient, at this time, V1 is reduced to reduce the amount of cold material entering the furnace per unit time, to help the furnace temperature recover; when the furnace temperature is stable in the working temperature range, V1 is restored or maintained at the normal feeding speed.
[0046] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.
Claims
1. A die-casting waste material conveying device, wherein the device is installed in a production line for die-casting aluminum lamp housings, the waste output end of the production line is connected to the material input end of the device, and the feed end of the production line is connected to the material output end of the device, characterized in that, include: A return material conveyor belt is installed at the material input end of the equipment via a connecting support frame, and its input end is connected to the waste output end of the production line. The second return conveyor belt has its input end connected to the output end of the first return conveyor belt to form a docking section one, and the second return conveyor belt is connected to a support frame two. The material discharge channel is located at the output end of the second return conveyor belt, and its input end is connected to the output end of the second return conveyor belt to form a material conveying dock. The material discharge channel is set in an inclined form. A furnace is installed at the material output end of the equipment and connected to the feed end of the production line, and the material discharge channel forms a second connection section with the input end of the furnace; The first and second return material conveyors are provided with a number of partitions at equal intervals on their surface, and a number of troughs for placing materials are formed on the inclined side of the first return material conveyor. The first and second return material conveyors are driven by the first and second transmission devices, respectively.
2. The die-casting return material conveying equipment according to claim 1, characterized in that, The surface length of the inclined side of the return material conveyor belt is denoted as L1, the length of the first docking section is denoted as L2, the surface length of the second return material conveyor belt is denoted as L3, the surface length of the inclined side of the discharge channel is denoted as L4, and the length of the second docking section is denoted as L5.
3. The die-casting return material conveying equipment according to claim 2, characterized in that, The total length of the surface of the return material conveyor belt used for transporting materials is denoted as L6, the number of partitions set on the return material conveyor belt is denoted as n, the length of the trough is L7 and L7=L6 / n, and the length of the material placed in the trough is denoted as L8 and L8<L7.
4. The die-casting return material conveying equipment according to claim 2, characterized in that, The first return material conveyor belt is connected to the top of the first support frame in an inclined manner. The first docking section is a path for conveying materials from high to low, formed from the output end of the first return material conveyor belt to the input end of the second return material conveyor belt. The input end of the first return material conveyor belt is located at a low position.
5. A die-casting return material conveying device according to any one of claims 2 to 4, characterized in that, The second docking section is a path for conveying materials from high to low, formed from the output end of the feeding channel to the input end of the furnace.
6. The die-casting return material conveying equipment according to claim 1, characterized in that, The furnace is connected to a heating device, which heats the furnace and maintains the furnace temperature at 679°C to 681°C during operation. The furnace is equipped with a temperature sensor that senses the furnace temperature.
7. A die-casting return material conveying system, wherein the control system is used to control the die-casting return material conveying equipment as described in any one of claims 1 to 6, characterized in that, The control system includes: The control console is used to input control commands to start and stop the heating device and the temperature sensor, and is communicatively connected to the heating device and the temperature sensor to transmit the control commands. The furnace temperature control unit is pre-programmed to generate a second control command to raise the temperature inside the furnace, and is communicatively connected with the heating device to transmit the second control command. The speed control unit generates a third control command based on the furnace temperature data fed back by the temperature sensor to control the operating status of the first and second transmission devices, and connects to the first and second transmission devices respectively to transmit the third control command. The feeding control unit generates control command four for waste feeding operation based on the furnace temperature data fed back by the temperature sensor, and connects with external waste feeding equipment to realize the transmission of control command four.
8. A method for controlling the conveying of die-casting return material, executed by the control system as described in claim 7, characterized in that, The method includes the following steps: S1, the console sends a command to the heating device and temperature sensor, causing the heating device to start and heat up the furnace, and the temperature sensor to sense the furnace temperature; S2, the heating device heats the furnace to 680°C, and the furnace temperature control unit presets the heating rate to 2°C per minute, so that the furnace is heated in the subsequent waste furnace according to the preset heating rate; S3, the speed control unit sends control command three to transmission device one and transmission device two, causing transmission device one and transmission device two to start; S4, the feeding control unit sends a control command to the external waste feeding device to perform waste feeding operation; S5, the waste material is sequentially conveyed by the first and second return conveyor belts and the unloading channel, and finally falls into the furnace for smelting. The speed control unit controls the running speed of the first and second transmission devices to keep the waste material transmission process time between 25 and 30 seconds.
9. The die-casting return material conveying control method according to claim 8, characterized in that, In step S2, the furnace temperature control unit compares the real-time furnace temperature data sensed by the temperature sensor with the preset operating temperature range, and transmits control commands to the heating device according to the following conditions: If the real-time furnace temperature is below 679℃, control command two instructs the heating device to increase the heating power; If the real-time furnace temperature is higher than 681℃, control command two instructs the heating device to reduce the heating power or stop heating. If the real-time furnace temperature is between 679℃ and 681℃, then control command two instructs the heating device to maintain the current heating power.
10. A die-casting return material conveying control method according to claim 8 or 9, characterized in that, In step S3, the speed control unit generates control command three, and the method for coordinated control of transmission device one and transmission device two, including the following steps: S301, Set the target transmission speed V1 of the return material conveyor belt one according to the waste output rate of the production line; S302, based on the target transmission speed V1 of the first return material conveyor belt, the number of partitions n and the length of the trough L7, calculate and set the target transmission speed V2 of the second return material conveyor belt to ensure that the material transitions smoothly at the docking section without accumulation or interruption of flow. S303, the speed control unit dynamically adjusts the operating speed of the transmission device one: when the furnace temperature is close to or below the lower limit of the working temperature range, V1 is reduced to reduce the feed rate; when the furnace temperature is stable within the working temperature range, V1 is restored or maintained to the normal feed rate.