A method and apparatus for testing the performance of an injection molding machine relay and fuse

Abstract

The application discloses a performance test method for a relay and a fuse of an injection molding machine, and relates to the field of injection molding machines.The method defines injection molding parameters corresponding to injection molding actions, controls DO output points by a controller, and continuously switches outputs with action time or execution time as the continuous output duration and a preset interval duration as the stop output duration, so as to simulate the working conditions of the injection molding machine corresponding to the injection molding actions.In the injection molding working conditions, it is determined in real time whether the diode in the control loop is in the light-out state.If yes, the cumulative switching number of the DO output point corresponding to the current control loop at this time is obtained, it is determined in real time whether the diode in the valve loop is in the light-out state.If yes, the cumulative switching number of the DO output point corresponding to the current valve loop at this time is obtained.Thus, the application realizes the test of the number of times that the relay and the fuse can be used in the injection molding working conditions without the injection molding machine.

Description

Technical Field

[0001] This invention relates to the field of injection molding machines, and more particularly to a method and apparatus for testing the performance of relays and fuses in injection molding machines. Background Technology

[0002] Currently, there is no standalone testing device for testing the number of uses of fuses and relays based on the operating conditions of an injection molding machine. Testing is done on the injection molding machine itself, meaning the test components are mounted on the machine and run automatically to test their usage count. However, this testing method has several problems:

[0003] 1. The number of test components that can be tested simultaneously is limited by the machine configuration, making it impossible to test multiple test components of the same type on one machine;

[0004] 2. The testing cycle and testing conditions cannot be adjusted flexibly according to requirements;

[0005] 3. Testing requires the use of an injection molding machine, which is costly and uneconomical. Summary of the Invention

[0006] To avoid the problem of not being able to test multiple components of the same type on a single injection molding machine, and the inability to flexibly adjust the testing cycle and testing conditions as needed, this invention proposes a performance testing method for relays and fuses in injection molding machines, applied to a relay and fuse performance testing device, which includes:

[0007] The power supply module includes: a first power supply module, a second power supply module, and a third power supply module;

[0008] The controller, which is electrically connected to the first power module, includes: a power output terminal connected to the second power module, and multiple DO output points; the positive terminal of the power output terminal is connected to the positive terminal of the second power module; the controller is used to control the DO output points to continuously switch between output and stop output, and to accumulate the number of switching times.

[0009] Multiple control loops are provided, each corresponding to a DO output point. Each control loop includes a relay module, one end of which is connected to the corresponding DO output point, and the other end is connected to the negative terminal of the power supply output. Each relay module includes a relay and a diode. The diode in the relay module is used to indicate the fault status of the relay.

[0010] Multiple valve circuits are provided, each including a fuse module. One end of the fuse module is connected to the positive terminal of a third power supply module, and the other end is connected to the negative terminal of the third power supply module. The fuse module includes a fuse, an electrical load, a relay contact, and a diode connected in sequence. The diode in the fuse module is used to indicate the fault status of the fuse. When the diode is off, it indicates that the corresponding relay or fuse is faulty.

[0011] The method includes the following steps:

[0012] S01: Define the injection parameters corresponding to the injection action; the injection parameters are: action speed, action stroke, or execution time; obtain the action time of the corresponding injection action through the action speed and action stroke;

[0013] S02: The controller controls the DO output point to continuously switch between outputs with the action time or execution time as the continuous output duration and a preset interval as the stop output duration, and accumulates the number of switching times;

[0014] S03: During the output switching process, it is determined in real time whether the diode in the control loop is in the off state. If so, the cumulative number of switching times of the corresponding DO output point of the current control loop at this time is obtained. It is also determined in real time whether the diode in the valve loop is in the off state. If so, the cumulative number of switching times of the corresponding DO output point of the current valve loop at this time is obtained.

[0015] Furthermore, in the relay module:

[0016] One end of the relay is connected to the corresponding DO output point, and the other end is connected to the positive terminal of the diode; the negative terminal of the diode is connected to both the negative terminal of the second power module and the negative terminal of the power output terminal.

[0017] Furthermore, in the fuse module:

[0018] One end of the fuse is connected to the positive terminal of the third power module, and the other end is connected to one end of the electrical load. The other end of the electrical load is connected to one end of the relay contact. The other end of the relay contact is connected to the positive terminal of the diode, and the negative terminal of the diode is connected to the negative terminal of the third power module.

[0019] The present invention also proposes a relay and fuse performance testing device, comprising:

[0020] The power supply module includes: a first power supply module, a second power supply module, and a third power supply module;

[0021] The controller, which is electrically connected to the first power module, includes: a power output terminal connected to the second power module, and multiple DO output points; the positive terminal of the power output terminal is connected to the positive terminal of the second power module; the controller is used to control the DO output points to continuously switch between output and stop output, and to accumulate the number of switching times.

[0022] Multiple control loops are provided, each corresponding to a DO output point. Each control loop includes a relay module, one end of which is connected to the corresponding DO output point, and the other end is connected to the negative terminal of the power supply output. Each relay module includes a relay and a diode. The diode in the relay module is used to indicate the relay's fault status.

[0023] Multiple valve circuits are provided, each including a fuse module. One end of the fuse module is connected to the positive terminal of a third power supply module, and the other end is connected to the negative terminal of the third power supply module. The fuse module includes a fuse, an electrical load, a relay contact, and a diode connected in sequence. The diode in the fuse module is used to indicate the fault status of the fuse. When the diode is off, it indicates that the corresponding relay or fuse is faulty.

[0024] The controller is also used to record the cumulative number of switching operations when a relay or fuse fails.

[0025] Furthermore, the electrical load is a solenoid valve.

[0026] Compared with the prior art, the present invention has at least the following beneficial effects:

[0027] This invention simulates the working conditions of an injection molding machine by defining injection parameters corresponding to the injection molding action and controlling the DO output point to continuously switch between continuous output duration (action time or execution time) and stop output duration (preset interval). Under this injection molding condition, the invention continuously checks whether the diode in the control circuit is in the off state. If so, it obtains the cumulative switching count of the DO output point corresponding to the current control circuit at this time (i.e., the number of times the relay is used under the corresponding injection molding action). Similarly, it continuously checks whether the diode in the valve circuit is in the off state. If so, it obtains the cumulative switching count of the DO output point corresponding to the current valve circuit at this time (i.e., the number of times the fuse is used under the corresponding injection molding action). Thus, this invention achieves the test of the usable count of relays and fuses under injection molding conditions, independent of the injection molding machine itself. Attached Figure Description

[0028] Figure 1 A flowchart of a performance testing method for relays and fuses in an injection molding machine;

[0029] Figure 2 This is a structural diagram of a relay and fuse performance testing device.

[0030] In the diagram: 1. First power module; 2. Second power module; 3. Third power module; 4. Controller. Detailed Implementation

[0031] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0032] Example 1

[0033] To perform performance tests on relays and fuses independently of the injection molding machine, while still under the injection molding operation conditions, such as... Figure 1 As shown, this invention proposes a performance testing method for relays and fuses in injection molding machines, applied to a relay and fuse performance testing device, which includes:

[0034] The power supply module includes: a first power supply module, a second power supply module, and a third power supply module;

[0035] The controller, which is electrically connected to the first power module, includes: a power output terminal connected to the second power module, and multiple DO output points; the positive terminal of the power output terminal is connected to the positive terminal of the second power module; the controller is used to control the DO output points to continuously switch between output and stop output, and to accumulate the number of switching times.

[0036] Multiple control loops are provided, each corresponding to a DO output point. Each control loop includes a relay module, one end of which is connected to the corresponding DO output point, and the other end is connected to the negative terminal of the power supply output. Each relay module includes a relay and a diode. The diode in the relay module is used to indicate the fault status of the relay.

[0037] In the relay module: one end of the relay is connected to the corresponding DO output point, and the other end is connected to the positive terminal of the diode; the negative terminal of the diode is connected to both the negative terminal of the second power supply module and the negative terminal of the power output terminal.

[0038] Multiple valve circuits are provided, each including a fuse module. One end of the fuse module is connected to the positive terminal of a third power supply module, and the other end is connected to the negative terminal of the third power supply module. The fuse module includes a fuse, an electrical load, a relay contact, and a diode connected in sequence. The diode in the fuse module is used to indicate the fault status of the fuse. When the diode is off, it indicates that the corresponding relay or fuse is faulty.

[0039] In the fuse module: one end of the fuse is connected to the positive terminal of the third power supply module, and the other end is connected to one end of the electrical load. The other end of the electrical load is connected to one end of the relay contact. The other end of the relay contact is connected to the positive terminal of the diode. The negative terminal of the diode is connected to the negative terminal of the third power supply module.

[0040] It should be noted that the relay contacts in the fuse module are the contacts corresponding to the relays in the relay module. This invention can define the number of control loops by defining the number of DO output points as needed. Through the relays in each control loop, corresponding relay contacts are set in the fuse module of the valve loop. When one relay corresponds to two or more valve loops, and the fuse models are the same, the final cumulative number of fuse switching times under the injection molding operation can be taken as the average of the cumulative number of fuse switching times on the valve loop corresponding to that relay.

[0041] like Figure 2 As shown, this invention uses three DO output points (DO1, DO2, DO3) as an example for demonstration. Among them, DO1 corresponds to relay K1 in the control circuit, DO2 corresponds to relay K2 in the control circuit, and DO3 corresponds to relay K3 in the control circuit. Relay K1 corresponds to two valve circuits (fuse F1 and F2 in the valve circuit), relay K2 corresponds to two valve circuits (fuse F3 and F4 in the valve circuit), and relay K3 corresponds to one valve circuit (fuse F5 in the valve circuit).

[0042] Specifically:

[0043] Figure 2 In this circuit, DO1~K1~the diode connected to K1~and the 0V power supply connected to the negative terminal of the diode form a control loop;

[0044] Figure 2 In the third power module, V+ ~ fuse F1 ~ electrical load X connected to F1 ~ relay contact k1 connected to X ~ diode connected to k1 ~ V- power supply connected to the negative terminal of the diode, which is a valve circuit corresponding to relay K1.

[0045] Figure 2 The connection methods for other control loops and valve loops are the same as above. Figure 2 In this diagram, X represents the electrical load, k1 represents the relay contact of relay K1, k2 represents the relay contact of relay K2, and k3 represents the relay contact of relay K3.

[0046] The method includes the following steps:

[0047] S01: Define the injection parameters corresponding to the injection action; the injection parameters are: action speed, action stroke, or execution time; obtain the action time of the corresponding injection action through the action speed and action stroke;

[0048] S02: The controller controls the DO output point to continuously switch between outputs with the action time or execution time as the continuous output duration and a preset interval as the stop output duration, and accumulates the number of switching times;

[0049] S03: During the output switching process, it is determined in real time whether the diode in the control loop is in the off state. If so, the cumulative number of switching times of the corresponding DO output point of the current control loop at this time is obtained. At the same time, it is determined in real time whether the diode in the valve loop is in the off state. If so, the cumulative number of switching times of the corresponding DO output point of the current valve loop at this time is obtained.

[0050] It should be noted that this invention features multiple DO output points, allowing for switching between continuous and stopped output durations corresponding to different injection molding actions. This enables simultaneous testing of relays and fuses under various injection molding conditions using a single device (the relay and fuse performance testing device proposed in this invention). Furthermore, this invention can incorporate multiple types of relays and fuses in the control and valve circuits, thus achieving simultaneous testing of different types of relays and fuses using a single device.

[0051] It is important to note that when two or more DO output points have the same continuous output duration and stop output duration (i.e., the same injection molding operation), and the relays in the corresponding control circuits are of the same type, the final cumulative switching count of the relays under that injection molding operation can be taken as the average of the cumulative switching counts of all relays in the control circuit corresponding to the DO output points with the same output. Similarly, when the fuses in the valve circuit corresponding to the DO output points with the same output are of the same type, the final cumulative switching count of the fuses under that injection molding operation can be taken as the average of the cumulative switching counts of each fuse.

[0052] In addition, the present invention can also modify the action time of the injection molding action according to the changes in the action speed and action stroke of the injection molding action, thereby realizing flexible adjustment of the test conditions.

[0053] It should be noted that, in this invention, the cumulative number of switching times is the performance parameter of the relay or fuse. By accumulating the number of switching times, the service life (i.e., the number of times it can be used) of the corresponding tested component (relay or fuse) can be determined.

[0054] This invention simulates the working conditions of an injection molding machine by defining injection parameters corresponding to the injection molding action and controlling the DO output point to continuously switch between continuous output duration (action time or execution time) and stop output duration (preset interval). Under this injection molding condition, the invention continuously checks whether the diode in the control circuit is in the off state. If so, it obtains the cumulative switching count of the DO output point corresponding to the current control circuit at this time (i.e., the number of times the relay is used under the corresponding injection molding action). Similarly, it continuously checks whether the diode in the valve circuit is in the off state. If so, it obtains the cumulative switching count of the DO output point corresponding to the current valve circuit at this time (i.e., the number of times the fuse is used under the corresponding injection molding action). Thus, this invention achieves the test of the number of times relays and fuses can be used under injection molding conditions, independent of the injection molding machine itself.

[0055] Example 2

[0056] like Figure 2 As shown, the present invention also proposes a relay and fuse performance testing device, comprising:

[0057] The power supply module includes: a first power supply module 1, a second power supply module 2 and a third power supply module 3;

[0058] The controller 4, which is electrically connected to the first power module, includes: a power output terminal connected to the second power module 2. Figure 2 The power supply output terminal (24V / 0V) and multiple DO output points are connected; the positive terminal of the power supply output terminal (24V) is connected to the positive terminal of the second power module 2; the controller 4 is used to control the DO output points to continuously switch between output and stop output, and to accumulate the number of switching times.

[0059] Multiple control loops are provided, each corresponding to a DO output point. Each control loop includes a relay module, one end of which is connected to the corresponding DO output point, and the other end is connected to the negative terminal (0V) of the power supply output. Each relay module includes a relay and a diode; the diode in the relay module is used to indicate the relay's fault status.

[0060] Multiple valve circuits are provided, each including a fuse module. One end of the fuse module is connected to the positive terminal of the third power module 3, and the other end is connected to the negative terminal of the third power module 3. The fuse module includes a fuse, an electrical load, a relay contact, and a diode connected in sequence. The diode in the fuse module is used to indicate the fault status of the fuse. When the diode is in the off state, it indicates that the corresponding relay or fuse is faulty.

[0061] The controller 4 is also used to record the cumulative number of switching operations when a relay or fuse fails.

[0062] Figure 2 In this context, the electrical load X is a solenoid valve.

[0063] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present invention are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indication will also change accordingly.

[0064] Furthermore, in this invention, descriptions involving terms such as "first," "second," and "a" are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this invention, "a plurality of" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0065] In this invention, unless otherwise explicitly specified and limited, the terms "connection," "fixed," etc., should be interpreted broadly. For example, "fixed" can mean a fixed connection, a detachable connection, or an integral part; it can mean a mechanical connection or an electrical connection; it can mean a direct connection or an indirect connection through an intermediate medium; it can mean the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0066] Furthermore, the technical solutions of the various embodiments of the present invention can be combined with each other, but only if they are feasible for those skilled in the art. If the combination of technical solutions is contradictory or cannot be implemented, it should be considered that such combination of technical solutions does not exist and is not within the scope of protection claimed by the present invention.

Claims

1. A performance testing method for relays and fuses in injection molding machines, applied to a relay and fuse performance testing device, characterized in that, The relay and fuse performance testing device includes: The power supply module includes: a first power supply module, a second power supply module, and a third power supply module; The controller, which is electrically connected to the first power module, includes: a power output terminal connected to the second power module, and multiple DO output points; the positive terminal of the power output terminal is connected to the positive terminal of the second power module; the controller is used to control the DO output points to continuously switch between output and stop output, and to accumulate the number of switching times. Multiple control loops are provided, each corresponding to a DO output point. Each control loop includes a relay module, one end of which is connected to the corresponding DO output point, and the other end is connected to the negative terminal of the power supply output. The relay module includes a relay and a diode. The diodes in the relay module are used to indicate the fault status of the relay; Multiple valve circuits are provided, each including a fuse module. One end of the fuse module is connected to the positive terminal of a third power supply module, and the other end is connected to the negative terminal of the third power supply module. The fuse module includes a fuse, an electrical load, a relay contact, and a diode connected in sequence. The diode in the fuse module is used to indicate the fault status of the fuse. When the diode is off, it indicates that the corresponding relay or fuse is faulty. The method includes the following steps: S01: Define the injection parameters corresponding to the injection action; the injection parameters are: action speed, action stroke, or execution time; obtain the action time of the corresponding injection action through the action speed and action stroke; S02: The controller controls the DO output point to continuously switch between outputs with the action time or execution time as the continuous output duration and a preset interval as the stop output duration, and accumulates the number of switching times; S03: During the output switching process, determine in real time whether the diode in the control loop is in the off state. If so, obtain the cumulative number of switching times of the DO output point corresponding to the current control loop at this time. Also, determine in real time whether the diode in the valve loop is in the off state. If so, obtain the cumulative number of switching times of the DO output point corresponding to the current valve loop at this time.

2. The performance testing method for injection molding machine relays and fuses according to claim 1, characterized in that, In the relay module: One end of the relay is connected to the corresponding DO output point, and the other end is connected to the positive terminal of the diode; the negative terminal of the diode is connected to both the negative terminal of the second power module and the negative terminal of the power output terminal.

3. The performance testing method for injection molding machine relays and fuses according to claim 1, characterized in that, In the fuse module: One end of the fuse is connected to the positive terminal of the third power module, and the other end is connected to one end of the electrical load. The other end of the electrical load is connected to one end of the relay contact. The other end of the relay contact is connected to the positive terminal of the diode, and the negative terminal of the diode is connected to the negative terminal of the third power module.

4. A performance testing device for relays and fuses in injection molding machines, characterized in that, include: The power supply module includes: a first power supply module, a second power supply module, and a third power supply module; The controller, which is electrically connected to the first power module, includes: a power output terminal connected to the second power module, and multiple DO output points; the positive terminal of the power output terminal is connected to the positive terminal of the second power module; the controller is used to control the DO output points to continuously switch between output and stop output, and to accumulate the number of switching times. Multiple control loops are provided, each corresponding to a DO output point. Each control loop includes a relay module, one end of which is connected to the corresponding DO output point, and the other end is connected to the negative terminal of the power supply output. The relay module includes a relay and a diode. In the relay module, the diodes are used to indicate the fault status of the relay. Multiple valve circuits are provided, each including a fuse module. One end of the fuse module is connected to the positive terminal of a third power supply module, and the other end is connected to the negative terminal of the third power supply module. The fuse module includes a fuse, an electrical load, a relay contact, and a diode connected in sequence. The diode in the fuse module is used to indicate the fault status of the fuse. When the diode is off, it indicates that the corresponding relay or fuse is faulty. The controller is configured to: Define the injection parameters corresponding to the injection molding action; the injection parameters are: action speed, action stroke, or execution time; obtain the action time of the corresponding injection molding action through the action speed and action stroke. The controller controls the DO output point to continuously output for the duration of the action time or execution time and to stop output for a preset interval, and continuously switches the output and accumulates the number of switches. During the output switching process, it is determined in real time whether the diode in the control loop is in the off state. If so, the cumulative number of switching times of the corresponding DO output point of the current control loop at this time is obtained. It is also determined in real time whether the diode in the valve loop is in the off state. If so, the cumulative number of switching times of the corresponding DO output point of the current valve loop at this time is obtained.

5. The performance testing device for injection molding machine relays and fuses according to claim 4, characterized in that, The electrical load is a solenoid valve.

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