Wireless interconnection type injection molding machine discharge waste gas collection system

Abstract

The utility model discloses a wireless interconnection type injection molding machine discharge waste gas collection system, which belongs to the technical field of injection molding machine auxiliary machine energy saving, and comprises a plurality of injection molding machines and a fan, a waste gas collection port is arranged beside the injection molding machines, the waste gas collection port is connected with the fan through a waste gas collection pipeline, and each injection molding machine is provided with a first PLC module and a first wireless module. A second PLC module and a second wireless module are installed on the fan control cabinet, and the PLC module and the wireless module communicate with each other through an RS485 and a Modbus; when the injection molding machine changes a mold, the fan control cabinet receives a mold changing signal sent by the injection molding machine, and the fan is started to collect discharged waste gas; and when the injection molding machine is not in the mold changing state, the fan stops working, so that the operation time of the fan is shortened, and electric energy is saved. A pneumatic air valve is installed on a pipeline for collecting discharged waste gas of each injection molding machine, the frequency of a frequency converter 46HZ corresponds to five air ports before transformation, automatic control of the air valves is achieved through programming after transformation, the frequency of the frequency converter is reduced to 35HZ and corresponds to one air port, the air pressure and the air volume are greatly increased compared with those before transformation, the operation frequency of a fan is reduced, and electric energy is saved.

Description

Technical Field

[0001] The utility model belongs to the technical field of energy saving of auxiliary machines for injection molding machines, and specifically relates to a wireless interconnection type exhaust gas collection system for the discharge of injection molding machines. Background Art

[0002] At present, the fan control mode of the original exhaust gas collection system in the second injection molding area of the interior trim factory adopts manual control. After the fan is manually turned on, it runs at a high frequency for 24 hours, resulting in a large amount of wasted electric energy.

[0003] The patent number is CN202121708324.2, which discloses an exhaust gas system for an injection molding machine. Although this system realizes the collection and purification of exhaust gas from the injection molding machine, the vacuum pump fan cannot be automatically started and stopped according to the working state of the injection molding machine, resulting in wasted electric energy. Summary of the Utility Model

[0004] In view of the above problems, the utility model provides a wireless interconnection type exhaust gas collection system for the discharge of injection molding machines, including multiple injection molding machines and a fan. An exhaust gas collection port is provided beside the injection molding machine, and the exhaust gas collection port is connected to the fan through an exhaust gas collection pipeline. A first PLC module and a first wireless module are installed on each injection molding machine, and a second PLC module and a second wireless module are installed on the fan control cabinet. The PLC module and the wireless module communicate through RS485 and Modbus; when the injection molding machine changes molds, the fan control cabinet receives the mold change signal sent by the injection molding machine, and the fan starts to collect the discharged exhaust gas; when the injection molding machine is not in the mold change state, the fan stops working, thereby reducing the running time of the fan and achieving power saving. A pneumatic air valve is installed on the pipeline for collecting the exhaust gas of each injection molding machine. Before the transformation, the frequency of the frequency converter was 46HZ corresponding to 5 air outlets. After the transformation, programming is used to realize the automatic control of the air valve, and the frequency of the frequency converter is reduced to 35HZ corresponding to one air outlet, while the air pressure and air volume are greatly increased compared with before the transformation, reducing the running frequency of the fan and achieving power saving.

[0005] The technical solution of the utility model is as follows: a wireless interconnection type exhaust gas collection system for the discharge of injection molding machines, including: multiple injection molding machines and a fan. An exhaust gas collection port is provided beside the injection molding machine, and the exhaust gas collection port is connected to the fan through an exhaust gas collection pipeline. A first PLC module and a first wireless module are installed on each injection molding machine, and a second PLC module and a second wireless module are installed on the fan control cabinet. The PLC module and the wireless module communicate through RS485 and Modbus. A pneumatic air valve is provided on the exhaust gas collection pipeline, and the number of pneumatic air valves is the same as the number of injection molding machines. A frequency converter is provided in the fan control cabinet.

[0006] Further, the frequency of the frequency converter is 35HZ.

[0007] Further, there are more than six injection molding machines, which are Haitian injection molding machines.

[0008] Further, the fan is a high-efficiency centrifugal fan.

[0009] Further, the fan control cabinet is non-standard manufactured and manually assembled.

[0010] Further, the PLC module is the Aimosun CPU224CN relay 214-1BD23 PLC module.

[0011] Further, the wireless module is the RS485-LORA-M 485 wireless module.

[0012] The beneficial effects of the present utility model are as follows:

[0013] 1. Annual power consumption before transformation = 24 hours * power consumption of the fan running for 1 hour * 365 days

[0014] = 24 * 26.5 * 365 = 232140 KWH;

[0015] 2. Annual power consumption after transformation = power consumption per die change * number of die changes per day * 365 days

[0016] = 5.828 * 10 * 365 = 21272 KWH;

[0017] 3. Income (electricity cost savings) = (annual power consumption before transformation - annual power consumption after transformation) * 0.67 yuan / KWH - spare part cost = (232140 - 21272) * 0.67 - 327.5 * 7 - 98 * 7 - 355 * 6 = 136173 yuan. Description of the Drawings

[0018] Figure 1 It is a schematic diagram of the power distribution of the fan control cabinet of the present utility model.

[0019] Figure 2 It is a schematic diagram of the power distribution of the touch screen of the fan control cabinet of the present utility model.

[0020] Figure 3 It is a schematic diagram of the overall view of the PLC of the fan control cabinet of the present utility model.

[0021] Figure 4 It is a schematic diagram of the input unit of the PLC of the fan control cabinet of the present utility model.

[0022] Figure 5 It is a schematic diagram of the output unit of the PLC of the fan control cabinet of the present utility model.

[0023] Figure 6 It is a schematic diagram of the control circuit of the fan control cabinet of the present utility model.

[0024] Figure 7Schematic diagram of the wireless module of the fan control cabinet of the present utility model.

[0025] Figure 8 Schematic diagram of the power distribution of the injection molding machine control cabinet of the present utility model.

[0026] Figure 9 Schematic diagram of the overall view of the PLC of the injection molding machine control cabinet of the present utility model.

[0027] Figure 10 Schematic diagram of the input unit of the PLC of the injection molding machine control cabinet of the present utility model.

[0028] Figure 11 Schematic diagram of the output unit of the PLC of the injection molding machine control cabinet of the present utility model.

[0029] Figure 12 Schematic diagram of the control circuit of the PLC of the injection molding machine control cabinet of the present utility model.

[0030] Figure 13 Schematic diagram of the wireless module of the injection molding machine control cabinet of the present utility model.

[0031] Figure 14 Schematic diagram of Loop 1 of the 37KW fan control cabinet of the present utility model.

[0032] Figure 15 Schematic diagram of Loop 2 of the 37KW fan control cabinet of the present utility model.

[0033] Figure 16 Schematic diagram of Loop 3 of the 37KW fan control cabinet of the present utility model.

[0034] Figure 17 Schematic diagram of Loop 4 of the 37KW fan control cabinet of the present utility model.

[0035] Figure 18 Schematic diagram of the system of the present utility model.

[0036] In the figure:

[0037] 1 Injection molding machine, 2 Fan, 3 Pneumatic air valve, 4 Exhaust gas collection port, 5 Exhaust gas collection pipeline, 101 First PLC module, 102 First wireless module, 201 Fan control cabinet, 202 Second PLC module, 203 Second wireless module. Specific implementation mode

[0038] It should be noted that in the description of the present utility model, the orientation or positional relationship indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation.

[0039] In the present utility model, unless otherwise clearly specified and defined, terms such as "set", "installed", "connected", "linked" should be understood in a broad sense. For example, "fixed" can be a fixed connection, a detachable connection, or integrated; the connection can be a mechanical connection or an electrical connection; the linkage can be a direct linkage or an indirect linkage through an intermediate medium, and can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0040] A wireless interconnected exhaust gas collection system for injection molding machines includes multiple injection molding machines 1 and a fan 2. An exhaust gas collection port 4 is provided beside the injection molding machine 1, and the exhaust gas collection port 4 is connected to the fan 2 through an exhaust gas collection pipeline 5.

[0041] A first PLC module 101 and a first wireless module 102 are installed on the injection molding machine 1, and a second PLC module 202 and a second wireless module 203 are installed on the fan control cabinet 201. The PLC module and the wireless module communicate through RS485 and Modbus.

[0042] Pneumatic air valves are provided on the exhaust gas collection pipeline, and the number of pneumatic air valves is the same as the number of injection molding machines. A frequency converter is provided inside the fan control cabinet.

[0043] The frequency of the frequency converter is 35HZ. The operating frequency of the frequency converter is reduced from 50HZ to 35HZ.

[0044] There are more than six injection molding machines 1.

[0045] Realize the automatic control of the start and stop of the fan according to the discharging state of the injection molding machine.

[0046] The injection molding machine 1 is a Haitian injection molding machine, the fan 2 is a high-efficiency centrifugal fan, the injection molding machine control cabinet (non-standard production, manual distribution board), the fan control cabinet 201 (non-standard production, manual distribution board), the PLC module is an Aimoxun CPU224CN relay 214 - 1BD23 PLC module, the wireless module is an RS485 - LORA - M 485 wireless module, and the pneumatic air valve is a Shannanli_304 stainless steel pneumatic air valve / / / φ200 (inner diameter 202 / outer diameter 252 / height 200).

[0047] Independently design and draw the electrical drawings for the energy-saving transformation of the waste gas collection system through Eplan software.

[0048] Independently assemble the control cabinets for 6 injection molding machines and the control cabinet for the fan, and install pneumatic air valves on the pipelines of each injection molding machine.

[0049] Configure the touch screen to display the working status (die change, shutdown, automatic production) of the six injection molding machines and the working status (stop, rotation) of the fan.

[0050] Write the PLC programs for the control cabinets of the injection molding machines and the fan respectively, and debug the parameters of the wireless module.

[0051] Install PLC modules and wireless modules on the control cabinets of the six injection molding machines and the fan. Through the RS485 and Modbus communication protocols, realize the communication between the injection molding machines and the fan, and the functions are as follows:

[0052] 1. When the injection molding machine retracts the platen, the air valve opens, and the fan electrical cabinet receives the die change signal sent by the injection molding machine, and the fan starts.

[0053] 2. When the injection molding machine advances the platen, the fan electrical cabinet receives the automatic production signal sent by the injection molding machine, the fan stops, and the air valve closes after a two-minute delay.

[0054] 3. When there is no platen advance signal after the retraction timer reaches 60 minutes, the fan electrical cabinet receives the shutdown signal and the fan stops. Thus, realize the automatic control of the fan start and stop, reduce the fan operation time, and achieve energy saving.

[0055] 4. Install pneumatic air valves on the pipelines for collecting the discharged waste gas of each injection molding machine. Before the transformation, the frequency of the frequency converter was 46HZ corresponding to 5 air outlets. After the transformation, programming realizes the automatic control of the air valve, and the frequency of the frequency converter is reduced to 35HZ corresponding to one air outlet, while the air pressure and air volume are greatly increased compared with before the transformation, reducing the fan operation frequency and achieving energy saving.

[0056] Install PLC modules and wireless modules on the control cabinets of the six injection molding machines and the fan. Through the RS485 and Modbus communication protocols, realize the communication between the injection molding machines and the fan: when the injection molding machine retracts the platen, the air valve opens, and the fan electrical cabinet receives the die change signal sent by the injection molding machine, and the fan starts; when the injection molding machine advances the platen, the fan electrical cabinet receives the automatic production signal sent by the injection molding machine, the fan stops, and the air valve closes after a two-minute delay; when there is no platen advance signal after the retraction timer reaches 60 minutes, the fan electrical cabinet receives the shutdown signal and the fan stops. Thus, realize the automatic control of the fan start and stop, reduce the fan operation time, and achieve energy saving.

[0057] Install a pneumatic air valve on the pipeline for collecting the exhaust gas discharged from each injection molding machine. Before the transformation, the frequency of the frequency converter was 46HZ corresponding to 5 air vents. After the transformation, programming is used to achieve the automatic control of the air valve. The frequency of the frequency converter is reduced to 35HZ corresponding to one air vent, and the air pressure and air volume are greatly increased compared with before the transformation, reducing the operating frequency of the fan and achieving power saving.

[0058] The above is only the specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, any modification, equivalent replacement, and improvement made within the spirit and principle of the present utility model shall be covered by the protection scope of the present utility model. At the same time, the content not detailedly described in this specification belongs to the prior art well known to those skilled in the art.

[0059] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or further includes elements inherent to such process, method, article or device.

Claims

1. A wireless interconnected injection molding machine discharge waste gas collection system, characterized in that: It includes multiple injection molding machines and fans. An exhaust gas collection port is arranged next to the injection molding machine. The exhaust gas collection port is connected to the fan through an exhaust gas collection pipeline. A first PLC module and a first wireless module are installed on each injection molding machine. A second PLC module and a second wireless module are installed on the fan control cabinet. The PLC module and the wireless module communicate through RS485 and Modbus. Pneumatic air valves are arranged on the exhaust gas collection pipeline. The number of pneumatic air valves is the same as the number of injection molding machines. A frequency converter is arranged in the fan control cabinet.

2. A wireless interconnected injection molding machine discharge waste gas collection system according to claim 1, characterized in that: The inverter frequency is 35HZ.

3. The wireless interconnected injection molding machine exhaust gas collection system according to claim 1, characterized in that: There are more than six injection molding machines.

4. The wireless interconnected injection molding machine discharge waste gas collection system according to claim 1, characterized in that: The fan is a high-efficiency centrifugal fan.

5. The wireless interconnected injection molding machine exhaust gas collection system according to claim 1, characterized in that: The fan control cabinet is non-standard and manually equipped.

6. The wireless interconnected injection molding machine exhaust gas collection system according to claim 1, characterized in that: The PLC module is the Aimoxun CPU224CN relay 214-1BD23PLC module.

7. The wireless interconnected injection molding machine exhaust gas collection system according to claim 1, characterized in that: The wireless module is RS485-LORA-M 485 wireless module.

Images