Injection molding machine signal detection device capable of replacing functions of drying machine

Abstract

The utility model relates to the technical field of injection molding machines (6), and discloses an injection molding machine signal detection device capable of replacing the function of a drying machine, when the injection molding machine (6) executes the operation of starting the drying machine through a controller (7), an indicator I (1) can correspondingly prompt according to the state of a heating wire starting signal; according to the detection device provided by the utility model, the communication connection between the detection device and the injection molding machine (6) can be completed through the multi-core wire (5), and the operation states of the heating wire and the fan in the drying machine can be simulated through the first indicator (1) and the second indicator (2). Thus, signal detection between the injection molding machine (6) and the drying machine module can be completed, and the light weight of the detection device can be realized, so that the detection device is convenient to carry, the use convenience of the detection device can be improved, and the detection device is more humanized.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a signal detection device for an injection molding machine that replaces the function of a dryer. Background Art

[0002] At present, injection molding machines are equipped with a variety of auxiliary machines, and the dryer is one of the auxiliary machines. It acts on the front end of the injection molding machine to dry plastic granule raw materials. The traditional dryer mainly consists of a drying barrel, heating wires and a fan. It is connected to the controller of the injection molding machine through multi-core wires and multi-hole connectors to联动 with the injection molding machine. For example, the invention application with the publication number CN111438875A discloses a similar dryer.

[0003] When the above dryer is in operation, the injection molding machine controls the fan and heating wires in the dryer to work through the controller. The airflow generated by the fan passes through the heating wires to form hot air, and the hot air enters the drying barrel to heat and dry the plastic granules in the barrel. During this process, the built-in control board of the dryer can monitor the temperature in the drying barrel through a thermocouple, and transmit the measured temperature data to the controller of the injection molding machine through multi-core wires and multi-hole connectors, so that the injection molding machine can also synchronously monitor the temperature in the drying barrel. When the temperature exceeds the threshold, the control board of the dryer can control the power supply relay to operate to cut off the operation of the heating wires and the fan (this action is abbreviated as "tripping"), so as to play a safety protection role. If the injection molding machine first detects an abnormal temperature, it can send a signal to the control board in the dryer through the controller, and then the control board cuts off the operation of the dryer through the power supply relay, thus playing a double insurance.

[0004] After the injection molding machine is assembled as a whole, in order to ensure normal communication between the auxiliary machine and the injection molding machine body, signal detection needs to be carried out on each auxiliary machine. In the dryer detection link, if the dryer body is directly used as a test prototype, not only does it occupy a large space, is difficult to install, but also cannot be carried around easily, making manual operation complicated and posing safety hazards. Therefore, there is an urgent need for a simple device for simulating the functions of a dryer equipment to detect whether the communication between the dryer and the injection molding machine is normal. Summary of the Utility Model

[0005] Aiming at the shortcomings of the prior art, the utility model provides a signal detection device for an injection molding machine that replaces the function of a dryer, which can not only complete the signal detection between the injection molding machine and the dryer module, but also achieve the lightweight of the detection equipment, and at the same time improve the convenience of use of the detection equipment.

[0006] In order to solve the above technical problems, the utility model is solved through the following technical solutions:

[0007] A signal detection device for an injection molding machine that replaces the function of a dryer includes an indicator 1 for simulating the operating state of the heating wire inside the dryer, an indicator 2 for simulating the operating state of the fan inside the dryer, and a control circuit. The indicator 1, indicator 2, and control circuit are connected to the controller of the injection molding machine via a multi-core wire with a multi-hole connector to communicate with the controller.

[0008] When the injection molding machine starts the dryer via the controller, the controller can start the control circuit via a multi-core wire, so that the control circuit connects the circuits containing indicator one and indicator two. The controller can also send heating wire start signal and fan start signal to indicator one and indicator two respectively via the multi-core wire, so that indicator one can provide a corresponding prompt based on the status of the heating wire start signal, and indicator two can provide a corresponding prompt based on the status of the fan start signal.

[0009] Using the above solution, a multi-core cable enables communication between the detection device and the injection molding machine, and indicators one and two simulate the operating status of the heating element and fan inside the dryer. This not only achieves signal detection between the injection molding machine and the dryer module, but also reduces the weight of the detection device, making it easy to carry, and improves its usability and user-friendliness.

[0010] Preferably, it also includes an over-temperature protection switch for simulating the over-temperature protection state of the dryer's built-in control board, the over-temperature protection switch being connected in series in the control circuit to realize the on / off state of the control circuit;

[0011] When the over-temperature protection switch responds to an external trigger to cut off the control circuit, the control circuit can cut off the circuit containing indicator one and indicator two, so that indicator one and indicator two stop operating.

[0012] Using the above scheme, the over-temperature protection switch can simulate the operation state of the built-in control board when the dryer is operating at an over-temperature temperature, thereby enabling the signal detection of the dryer's built-in temperature protection function.

[0013] Preferably, a temperature sensor is also included, which is connected to the controller of the injection molding machine via a multi-core wire to communicate with the controller;

[0014] When the temperature value measured by the temperature sensor is greater than the built-in threshold of the controller, the controller can control the control loop to stop operating through the multi-core wire, thereby cutting off the loop containing indicator one and indicator two, and thus stopping indicator one and indicator two from operating.

[0015] By adopting the above scheme, the detection device can simulate the scenario where the controller of the injection molding machine obtains the temperature change inside the dryer through the multi-core wire and temperature sensor. When the measured temperature value exceeds the threshold, the controller of the injection molding machine can drive the control loop to act, thereby judging whether the detection signal is normal based on the status of indicator one and indicator two.

[0016] Preferably, it also includes an indicator three connected to the controller via a multi-core wire to simulate the dryer tripping state, the indicator three being controlled by the control loop;

[0017] When the control circuit stops operating, the control circuit can connect the circuit containing indicator three to make indicator three operate, thereby indicating the tripped status.

[0018] Using the above solution, indicator three can help staff determine whether the dryer module is in a tripped state, further improving the detection capability of the detection device.

[0019] Preferably, both indicator one and indicator two are luminous indicators.

[0020] As a preferred option, indicator three is an illuminated indicator.

[0021] Using the above solution, the luminous indicators provide clear and distinct information without disturbing the surrounding environment, making them more user-friendly.

[0022] Preferably, the injection molding machine's controller is coupled with a central control panel capable of communicating with the controller.

[0023] By adopting the above solution, the central control panel allows staff to easily operate the injection molding machine and view its various parameters, further improving operational efficiency and convenience.

[0024] Preferably, the detection device is housed inside a housing, while the multi-core wire and multi-hole connector are located outside the housing.

[0025] By adopting the above solution, the housing can not only protect the circuit structure of the detection device, thereby extending its service life, but also make it convenient for staff to carry the detection device, making it more user-friendly.

[0026] This invention, by adopting the above technical solution, has significant technical advantages: The multi-core cable enables communication between the detection device and the injection molding machine, and indicators one and two simulate the operating status of the heating element and fan inside the dryer. This not only achieves signal detection between the injection molding machine and the dryer module but also enables the detection device to be lightweight and portable, while simultaneously improving its ease of use and making it more user-friendly. Attached Figure Description

[0027] Figure 1 This is a schematic diagram of the structure of this embodiment. Figure 1 ;

[0028] Figure 2 This is a circuit diagram of this embodiment;

[0029] Figure 3 This is a schematic diagram of the structure of this embodiment. Figure 2 ;

[0030] Figure 4 for Figure 3 An enlarged schematic diagram of part A shown.

[0031] The parts referred to by the numbers in the above attached diagrams are as follows: 1. Indicator 1; 2. Indicator 2; 3. Control circuit; 4. Multi-hole connector; 5. Multi-core wire; 6. Injection molding machine; 7. Controller; 8. Over-temperature protection switch; 9. Temperature sensor; 10. Indicator 3; 11. Central control panel; 12. Housing; 13. Probe hole; 14. Probe; 15. Fixture. Detailed Implementation

[0032] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments.

[0033] like Figure 1 and Figure 2 As shown, this embodiment discloses a signal detection device for an injection molding machine that replaces the function of a dryer. It includes an indicator 1 for simulating the operating state of the heating element inside the dryer, an indicator 2 for simulating the operating state of the fan inside the dryer, and a control circuit 3. Indicator 1, indicator 2, and control circuit 3 are connected to the controller 7 of the injection molding machine 6 via a multi-core wire 5 with a multi-hole connector 4 for communication. Specifically, control circuit 3 includes a relay KA. The coil of relay KA is connected to the controller 7 of the injection molding machine 6 via the multi-core wire 5 to operate according to the output signal of the controller 7. The normally open contact KA-1 of relay KA is connected in series in the circuit containing indicator 1, and the normally open contact KA-2 of relay KA is connected in series in the circuit containing indicator 2. In this embodiment, when the injection molding machine 6 starts the dryer through the controller 7, the controller 7 can start the control circuit 3 through the multi-core wire 5, so that the control circuit 3 connects the circuits where indicator 1 and indicator 2 are located. The controller 7 can also send the heating wire start signal and the fan start signal to indicator 1 and indicator 2 respectively through the multi-core wire 5, so that indicator 1 can make a corresponding prompt according to the status of the heating wire start signal, and indicator 2 can make a corresponding prompt according to the status of the fan start signal.

[0034] If indicator 1 issues a prompt, it indicates that the heating element in the simulated dryer is operating normally; otherwise, it indicates that the heating element is operating abnormally. Similarly, if indicator 2 issues a prompt, it indicates that the fan in the simulated dryer is operating normally; otherwise, it indicates that the fan is operating abnormally.

[0035] like Figure 1 and Figure 2 As shown, to simulate the working state of the built-in control board when the dryer operates at overtemperature, the detection device also includes an overtemperature protection switch 8 for simulating the overtemperature protection state of the dryer's built-in control board. The overtemperature protection switch 8 is preferably a holding rotary switch SA, which is connected in series with the coil of the relay KA to realize the switching on and off of the control circuit 3. In this embodiment, when the overtemperature protection switch 8 responds to an external trigger to cut off the control circuit 3, the control circuit 3 can cut off the circuit containing indicator 1 and indicator 2, causing indicator 1 and indicator 2 to stop operating.

[0036] like Figure 1 and Figure 2 As shown, to simulate the scenario where the controller 7 of the injection molding machine 6 obtains the operating temperature inside the dryer, the detection device also includes a temperature sensor 9. The temperature sensor 9 is preferably a thermocouple. The temperature sensor 9 is connected to the controller 7 of the injection molding machine 6 via a multi-core wire 5 to communicate with the controller 7. In this embodiment, when the temperature value measured by the temperature sensor 9 is greater than the built-in threshold of the controller 7, the controller 7 can control the control loop 3 to stop operating via the multi-core wire 5, thereby cutting off the loop containing indicator 1 and indicator 2, thus stopping indicator 1 and indicator 2 from operating.

[0037] like Figure 1 and Figure 2 As shown, to enable the detection device to have a tripping indication function, the detection device also includes an indicator 3 10 coupled to the controller 7 via a multi-core wire 5 to simulate the tripping state of the dryer. The indicator 3 10 is controlled by the control circuit 3. Specifically, the normally closed contact KA-3 of the relay KA is connected in series in the circuit containing the indicator 3 10. In this embodiment, when the control circuit 3 stops operating, the control circuit 3 can conduct the circuit containing the indicator 3 10 to make the indicator 3 10 run, thereby indicating the tripping state.

[0038] To ensure the prompting effect of each indicator, Indicator 1, Indicator 2, and Indicator 3 are all luminous indicators, preferably indicator lights.

[0039] like Figure 3 and Figure 4As shown, to protect the circuit structure of the detection device and facilitate portability, the detection device is housed within a housing 12. Indicator 1, Indicator 2, Indicator 3, and Over-temperature Protection Switch 8 are all located on the upper surface of the housing 12 for easy viewing and operation by personnel. A multi-core wire 5 and a multi-hole connector 4 extend through the side wall of the housing 12 to the outside of the housing 12 for easy insertion and removal by personnel. The temperature sensor 9 is fixed inside the housing 12 by a clamp 15, and its probe 14 extends outside the housing 12 through a probe hole 13 on the side wall of the housing 12 for easy use by personnel.

[0040] like Figure 2 As shown, in order to facilitate the operation of the injection molding machine 6 and view the parameters on the injection molding machine 6, a central control panel 11 that can communicate with the controller 7 of the injection molding machine 6 is coupled to the controller 7. The central control panel 11 is preferably a touch screen.

[0041] The specific steps for using the detection device are as follows:

[0042] (1) Connect the multi-core wire 5 on the detection device to the controller 7 of the injection molding machine 6 through the multi-hole connector 4, and switch the over-temperature protection switch 8 to the on state, thereby completing the communication connection between the detection device and the injection molding machine 6.

[0043] (2) Activate the dryer module on the central control panel 11 of the injection molding machine 6 and set the initial parameters. For example, set the drying temperature to 100℃ and the high temperature alarm temperature to 200℃ (which can be changed according to actual needs).

[0044] (3) Start the dryer module on the central control panel 11 so that the controller 7 of the injection molding machine 6 can send signals to the control circuit 3, indicator 1, indicator 2, and indicator 3 10 via the multi-core wire 5. At this time, the relay KA is energized and closes, causing the corresponding normally open contacts KA-1 and KA-2 to close, and simultaneously causing the normally closed contact KA-3 to open, thereby connecting the power supply circuits of indicator 1 and indicator 2, causing indicator 1 and indicator 2 to light up as a reminder, simulating the normal operation of the heating element and fan in the dryer. At the same time, the power supply circuit of indicator 3 10 is cut off, so that indicator 3 10 does not light up, thereby simulating the state where the dryer tripping action has not been executed.

[0045] (4) To simulate the operation scenario of the control board when it detects that the working temperature of the dryer exceeds the threshold, the over-temperature protection switch 8 is switched to the open state to cut off the control circuit 3, thereby de-energizing the relay KA. At this time, the normally open contacts KA-1 and KA-2 corresponding to the relay KA are disconnected, while the normally closed contact KA-3 is closed to cut off the power supply circuit of indicator 1 and indicator 2, and to connect the power supply circuit of indicator 3 10. Thus, indicator 1 and indicator 2 are turned off to simulate the state where the heating wire and fan in the dryer stop running. At the same time, indicator 3 10 is lit to simulate the tripped state of the dryer.

[0046] (5) To simulate the scenario where the controller 7 of the injection molding machine 6 detects that the working temperature inside the dryer exceeds the threshold through the temperature sensor 9, the probe 14 of the temperature sensor 9 is heated to above the temperature threshold. When the controller 7 of the injection molding machine 6 detects an abnormal temperature through the temperature sensor 9, it can send a signal with the opposite state to the control circuit 3, thereby de-energizing the relay KA. At this time, the normally open contacts KA-1 and KA-2 corresponding to the relay KA are disconnected, while the normally closed contact KA-3 is closed. Thus, indicator 1 and indicator 2 are turned off, while indicator 3 is lit.

[0047] (6) If the signals of each indicator are normal after following the above steps, it means that the drying module of injection molding machine 6 is functioning normally. If the display is abnormal, it needs to be repaired.

Claims

1. A signal detection device for injection molding machines that replaces the function of a dryer, characterized in that: It includes an indicator (1) for simulating the operating status of the heating wire in the dryer, an indicator (2) for simulating the operating status of the fan in the dryer, and a control circuit (3). The indicator (1), the indicator (2), and the control circuit (3) are connected to the controller (7) of the injection molding machine (6) via a multi-core wire (5) with a multi-hole connector (4) to communicate with the controller (7). When the injection molding machine (6) starts the dryer through the controller (7), the controller (7) can start the control circuit (3) through the multi-core wire (5) so that the control circuit (3) connects the circuits of indicator one (1) and indicator two (2). The controller (7) can send the heating wire start signal and the fan start signal to indicator one (1) and indicator two (2) respectively through the multi-core wire (5) so that indicator one (1) can make a corresponding prompt according to the status of the heating wire start signal, and at the same time, indicator two (2) can make a corresponding prompt according to the status of the fan start signal.

2. The injection molding machine signal detection device that replaces the function of a dryer according to claim 1, characterized in that: It also includes an over-temperature protection switch (8) for simulating the over-temperature protection state of the built-in control board of the dryer. The over-temperature protection switch (8) is connected in series with the control circuit (3) to realize the on and off of the control circuit (3). When the over-temperature protection switch (8) responds to an external trigger to cut off the control circuit (3), the control circuit (3) can cut off the circuit containing indicator one (1) and indicator two (2) so that indicator one (1) and indicator two (2) stop operating.

3. The injection molding machine signal detection device that replaces the function of a dryer according to claim 1, characterized in that: It also includes a temperature sensor (9), which is connected to the controller (7) of the injection molding machine (6) via a multi-core wire (5) to communicate with the controller (7); When the temperature value measured by the temperature sensor (9) is greater than the built-in threshold of the controller (7), the controller (7) can control the control loop (3) to stop operating through the multi-core wire (5) to cut off the loop where the indicator one (1) and the indicator two (2) are located, thereby causing the indicator one (1) and the indicator two (2) to stop operating.

4. The injection molding machine signal detection device that replaces the function of a dryer according to claim 2, characterized in that: It also includes an indicator three (10) coupled to the controller (7) via a multi-core wire (5) to simulate the dryer tripping state, the indicator three (10) being controlled by the control loop (3); When the control circuit (3) stops operating, the control circuit (3) can connect the circuit of indicator three (10) so that indicator three (10) can operate, thereby indicating the tripping status.

5. The injection molding machine signal detection device that replaces the function of a dryer according to claim 1, characterized in that: Indicator 1 (1) and Indicator 2 (2) are both light-emitting prompts.

6. The injection molding machine signal detection device that replaces the function of a dryer according to claim 4, characterized in that: Indicator 3 (10) is an illuminated indicator.

7. The injection molding machine signal detection device that replaces the function of a dryer according to claim 1, characterized in that: The injection molding machine (6) has a central control panel (11) coupled to the controller (7) and capable of communicating with the controller (7).

8. A signal detection device for an injection molding machine that replaces the function of a dryer, as described in any one of claims 1 to 7, characterized in that: The detection device is housed inside a housing (12), while the multi-core wire (5) and the multi-hole connector (4) are located outside the housing (12).

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