Phase sequence detection device for external power interface of injection molding machine

Abstract

The utility model relates to the technical field of injection molding machines, and discloses a phase sequence detection device for an external power interface of an injection molding machine, a phase sequence detection module (2) is arranged in a box body (1), a signal receiving end (3) of the phase sequence detection module (2) is coupled with a signal connector (5) through a signal transmission line (4), and when the signal connector (5) is in butt joint with an external power interface (7) of an injection molding machine (6), the signal connector (5) is connected with the external power interface (7). The phase sequence detection module (2) is connected with the external power supply interface (7) through a signal transmission line (4) and obtains a three-phase power supply signal in the external power supply interface (7) so as to detect the phase sequence of the three-phase power supply signal. The phase sequence detection device is used for replacing a physical auxiliary machine to detect the phase sequence condition of the external power interface (7) of the injection molding machine (6), the efficiency and convenience of phase sequence detection can be effectively improved, the light weight of the detection equipment is realized, the detection equipment is convenient to carry, and meanwhile, the safety in the detection process is effectively improved.

Description

Technical Field

[0001] The utility model relates to the technical field of injection molding machines, in particular to a phase sequence detection device for an external power supply interface of an injection molding machine. Background Art

[0002] At present, injection molding machines are equipped with a variety of auxiliary machines, all of which require the injection molding machine's own external power supply interface for power supply. As the key to connecting the auxiliary machines, the role of the external power supply interface is self-evident. Therefore, after the injection molding machine is assembled, it is necessary to test its own external power supply interface, and the main test items are the live wire phase sequence. However, the traditional detection method is to use the physical auxiliary machine external power supply interface and judge whether the phase sequence of the power supply interface is correct by the operating status of the auxiliary machine. However, the physical auxiliary machine is large in size and very bulky, which is not only not conducive to carrying, but also increases the difficulty of operation. At the same time, there are certain safety hazards. Therefore, there is an urgent need for a simple and lightweight injection molding machine external power supply interface phase sequence detection device. Utility Model Content

[0003] In view of the shortcomings of the prior art, the utility model provides a phase sequence detection device for the external power interface of an injection molding machine, which can not only reduce the detection difficulty of the external power interface of the injection molding machine, but also realize the lightweight of the detection device, thereby improving operating efficiency and convenience while ensuring safety.

[0004] In order to solve the above technical problems, the utility model is solved by the following technical solutions:

[0005] A phase sequence detection device for an external power interface of an injection molding machine comprises a box body, a phase sequence detection module is arranged in the box body, a signal receiving end of the phase sequence detection module is coupled with a signal connector via a signal transmission line, when the signal connector is connected to an external power interface of the injection molding machine, the phase sequence detection module is connected via the signal transmission line and obtains a three-phase power signal in the external power interface to detect the phase sequence of the three-phase power signal; a connection seat is arranged between the external power interface and the injection molding machine, locking grooves are arranged on both sides of the connection seat, locking mechanisms are arranged on both sides of the signal connector, and the locking mechanisms comprise a locking plate and an elastic driving mechanism for driving the locking plate to engage in the corresponding locking groove;

[0006] When the signal connector is connected to the external power connector, the elastic driving mechanism drives the locking plate to buckle into the corresponding locking groove to prevent the signal connector from being separated from the external power connector;

[0007] When the signal connector is separated from the external power interface, the elastic driving mechanism drives the two locking plates to engage with the front end of the signal connector to form a shield at the front end of the signal connector.

[0008] Adopting the above solution, by using a phase sequence detection device to replace the physical auxiliary machine to detect the phase sequence of the external power supply interface of the injection molding machine, the efficiency and convenience of phase sequence detection can be effectively improved, and the weight of the detection equipment can be reduced, thus facilitating portability. At the same time, the safety during the detection process can be effectively improved. When the signal connector on the phase sequence detection device is docked with the external power supply interface on the injection molding machine, the locking mechanism can be buckled into the locking groove through the locking plate to complete the locking of the signal connector and the external power supply interface, thus ensuring the stability of the detection process. When the signal connector is detached from the external power supply interface, the elastic driving mechanism can drive the two locking plates to bite each other to form a barrier at the front end of the signal connector, thus playing a role in protection and dust prevention, and further improving the detection accuracy and service life of the detection device.

[0009] Preferably, a driving member is provided on the locking plate to overcome the elastic force of the elastic driving mechanism in response to an external trigger and drive the locking plate out of the locking groove.

[0010] Adopting the above solution, the driving member can facilitate the detection personnel to release the locked state of the locking mechanism, further improving the operation efficiency and convenience.

[0011] Preferably, a connecting plate pivotally connected to the outside of the signal connector is provided at the tail end of the locking plate.

[0012] Adopting the above solution, the connecting plate can extend the tail end of the locking plate and stably connect it to the signal connector.

[0013] Preferably, the driving member is in the shape of a plate, which is connected to the end of the connecting plate away from the locking plate and bends away from the signal connector.

[0014] Adopting the above solution, the driving member is more convenient to be stressed, convenient for the operator to operate with one hand, and further improving the operation efficiency and convenience.

[0015] Preferably, the elastic driving mechanism is a spring hinge, and its two movable ends are respectively connected to the opposite surfaces of the driving member and the signal connector.

[0016] Adopting the above solution, the spring hinge has a simple structure, is easy to install, has a low cost, and can provide a stable and lasting elastic driving force, thus ensuring the effect of the elastic driving mechanism.

[0017] Preferably, an anti - detachment groove is formed on the covering surface of the locking plate. When the locking plate is buckled into the locking groove, the anti - detachment groove is buckled to the opening edge of the locking groove close to the external power supply interface.

[0018] Adopting the above solution, the cooperation between the locking plate and the locking groove is more stable, further improving the locking effect of the locking mechanism.

[0019] Preferably, the signal transmission line includes three live wire signal receiving lines respectively used for receiving three-phase power signals in the external power supply interface.

[0020] With the above solution, by using three live wire signal receiving lines to respectively receive three-phase power signals in the external power supply interface, it can effectively avoid signal interference when the phase sequence detection module receives three-phase signals, and further improve the use accuracy and stability of the detection device.

[0021] Preferably, the signal transmission line further includes a neutral wire signal receiving line. One end of the neutral wire signal receiving line is electrically connected to one of the live wire signal receiving lines, and the other end is integrated in the signal connector. A first indicator is provided on the neutral wire signal receiving line; when the signal connector is docked with the external power supply interface, the neutral wire signal receiving line is used to receive the neutral wire signal in the external power supply interface to determine whether the neutral wire in the external power supply interface is missing a phase, and corresponding prompts are made through the first indicator.

[0022] With the above solution, through the neutral wire signal receiving line and the first indicator, it can effectively determine whether the neutral wire in the external power supply interface is missing a phase, and further expand the detection function of the detection device.

[0023] Preferably, the signal transmission line further includes a ground wire signal receiving line. One end of the ground wire signal receiving line is electrically connected to one of the live wire signal receiving lines, and the other end is integrated in the signal connector. A second indicator is provided on the ground wire signal receiving line; when the signal connector is docked with the external power supply interface, the ground wire signal receiving line is used to receive the ground wire signal in the external power supply interface to determine whether the ground wire in the external power supply interface is missing a phase, and corresponding prompts are made through the second indicator.

[0024] With the above solution, through the ground wire signal receiving line and the second indicator, it can effectively determine whether the ground wire in the external power supply interface is missing a phase, and thus effectively expand the detection function of the detection device.

[0025] Preferably, a changeover switch is provided on the signal transmission line to turn on and off the signal transmission line in response to an external trigger.

[0026] With the above solution, by operating the changeover switch to turn on and off the signal transmission line, it can accurately control the start and stop of the detection device, and ensure power-off plugging and unplugging between the signal connector and the external power supply interface, thus ensuring safety.

[0027] Preferably, a phase sequence alarm module is coupled to the phase sequence detection module to give corresponding prompts according to the phase sequence detection situation.

[0028] With the above solution, through the phase sequence alarm module, it is convenient for the detection personnel to quickly know the phase sequence detection situation, and further improve the detection efficiency and convenience.

[0029] Due to the adoption of the above technical solutions, the utility model has remarkable technical effects: by using a phase sequence detection device to replace the physical auxiliary machine to detect the phase sequence of the external power supply interface of the injection molding machine, the efficiency and convenience of phase sequence detection can be effectively improved, and the weight of the detection device can be reduced, thus facilitating portability. At the same time, the safety during the detection process is effectively improved. When the signal connector on the phase sequence detection device is docked with the external power supply interface on the injection molding machine, the locking mechanism can be buckled into the locking groove through the locking plate to complete the locking of the signal connector and the external power supply interface, thereby ensuring the stability of the detection process. When the signal connector is separated from the external power supply interface, the elastic drive mechanism can drive the two locking plates to bite each other to form a barrier at the front end of the signal connector, thus playing a role in protection and dust prevention, and further improving the detection accuracy and service life of the detection device. Description of the Drawings

[0030] Figure 1 Schematic diagram of the structure where the two locking plates in this embodiment bite each other and block the front side of the signal connector;

[0031] Figure 2 is Figure 1 Enlarged schematic diagram of part A shown;

[0032] Figure 3 Circuit schematic diagram of this embodiment;

[0033] Figure 4 Schematic diagram of the structure when the signal connector and the external power supply interface are docked in this embodiment;

[0034] Figure 5 is Figure 4 Enlarged schematic diagram of part B shown;

[0035] Figure 6 Schematic diagram of the structure when the signal connector and the external power supply interface are separated in this embodiment;

[0036] Figure 7 is Figure 6 Enlarged schematic diagram of part C shown;

[0037] Figure 8 is Figure 5 Enlarged schematic diagram of part D shown.

[0038] The names of the parts referred to by each digital label in the above drawings are as follows: 1. Box body; 2. Phase sequence detection module; 3. Signal receiving end; 4. Signal transmission line; 5. Signal connector; 6. Injection molding machine; 7. External power supply interface; 8. Connection seat; 9. Locking groove; 10. Locking mechanism; 11. Locking plate; 12. Driving part; 13. Connecting plate; 14. Spring hinge; 15. Anti-disengagement groove; 16. Live wire signal receiving wire; 17. Neutral wire signal receiving wire; 18. Changeover switch; 19. Phase sequence alarm module; 20. Signal receiving port; 21. Live wire signal receiving contact; 22. Neutral wire signal receiving contact; 23. Ground wire signal receiving contact; 24. Circuit board; 25. Ground wire signal receiving wire; 26. Docking port. Specific embodiments

[0039] The present utility model will be further described in detail below in conjunction with the drawings and embodiments.

[0040] As Figures 1 to 8 shown, a phase sequence detection device for an external power supply interface of an injection molding machine disclosed in this embodiment includes a box body 1. A phase sequence detection module 2 integrated on a circuit board 24 is arranged in the box body 1. A signal receiving end 3 of the phase sequence detection module 2 is coupled to a signal connector 5 through a signal transmission line 4. Both the signal transmission line 4 and the signal connector 5 are located outside the box body 1 to facilitate the operation of the detection personnel. Specifically, the signal receiving end 3 includes signal receiving ports 20 respectively used for receiving three-phase power supply signals. The signal transmission line 4 includes three live wire signal receiving wires 16 respectively used for receiving three-phase power supply signals in the external power supply interface 7. One ends of the three live wire signal receiving wires 16 are respectively electrically connected to the three signal receiving ports 20, and the other ends are respectively electrically connected to three live wire signal receiving contacts 21 integrated in the signal connector 5.

[0041] In order to detect whether there is a phase loss in the neutral wire in the external power supply interface 7, a neutral wire signal receiving wire 17 is also integrated in the signal transmission line 4. One end of the neutral wire signal receiving wire 17 is electrically connected to one of the live wire signal receiving wires 16, and the other end is electrically connected to a neutral wire signal receiving contact 22 integrated in the signal connector 5. A first indicator installed on the upper surface of the box body 1 is arranged on the neutral wire signal receiving wire 17. The first indicator is preferably an indicator light B1 with a working voltage of 220V, which is connected in series to the neutral wire signal receiving wire 17. A fuse F1 is also connected in series on the neutral wire signal receiving wire 17, so as to provide overcurrent protection for the circuit.

[0042] In order to detect whether there is a phase loss in the ground wire in the external power interface 7, a ground wire signal receiving line 25 is also integrated in the signal transmission line 4, one end of the ground wire signal receiving line 25 is electrically connected to another live wire signal receiving line 16, and the other end is electrically connected to the ground wire signal receiving contact 23 integrated in the signal connector 5. The ground wire signal receiving line 25 is provided with a second indicator installed on the upper surface of the box body 1. The second indicator is preferably an indicator light B2 with a working voltage of 220V, which is connected in series to the ground wire signal receiving line 25. A fuse F2 is also connected in series to the ground wire signal receiving line 25, so as to protect the circuit.

[0043] In order to facilitate reading the detection result of the phase sequence detection module 2, a phase sequence alarm module 19 is coupled to the phase sequence detection module 2 for providing corresponding prompts according to the phase sequence detection situation, and the phase sequence alarm module 19 is installed on the upper surface of the box body 1. Among them, the specific circuit structure and working principle of the phase sequence detection module 2 and the phase sequence alarm module 19 have been disclosed in the utility model patent with announcement number CN216900725U, and will not be repeated here.

[0044] In order to complete the start and stop of the phase sequence detection device and the safe plugging and unplugging of the signal connector 5, a switching switch 18 is provided on the signal transmission line 4 for turning on and off the signal transmission line 4 in response to an external trigger. The switching switch 18 is preferably a knob switch installed on the upper surface of the box body 1, which comprises three linkage contacts respectively connected in series to the three live signal receiving lines 16, thereby realizing the on and off of the signal transmission line 4, and further realizing the start and stop of the phase sequence detection device.

[0045] When using the phase sequence detection device, first power on the injection molding machine 6, and then connect the signal connector 5 to the external power interface 7 of the injection molding machine 6, so that the three live signal receiving contacts 21, the neutral signal receiving contacts 22 and the ground signal receiving contacts 23 integrated in the signal connector 5 can be electrically connected to the three live contacts, the neutral contact and the ground contact in the external power interface 7 respectively. At this time, switch the switch 18 to the on state to connect the signal transmission line 4. In this state, the phase sequence detection module 2 can obtain the three-phase power supply signals in the external power interface 7 respectively through the three live signal receiving lines 16 in the signal transmission line 4 to detect the phase sequence of the three-phase power supply. If there is a reverse phase sequence in the phase sequence, the phase sequence alarm module 19 can make corresponding prompts to remind the detection personnel.

[0046] At the same time, the neutral line signal receiving line 17 can receive the neutral line signal in the external power interface 7 to determine whether the neutral line in the external power interface 7 is missing a phase, and the neutral line signal is obtained through the live line signal receiving line 16 connected to the neutral line signal receiving line 17. If the neutral line is missing a phase, the neutral line signal is not conductive, so that the indicator light B1 cannot be lit. On the contrary, if the neutral line is normal, the indicator light B1 is always on.

[0047] Similarly, the ground wire signal receiving wire 25 can receive the ground wire signal in the external power supply interface 7 to determine whether the ground wire in the external power supply interface 7 is out of phase. The ground wire signal is obtained through the live wire signal receiving wire 16 connected to the ground wire signal receiving wire 25. If the ground wire is out of phase, the ground wire signal is not conducted, causing the indicator light B2 not to light up. On the contrary, if the ground wire is normal, the indicator light B2 remains on.

[0048] After detecting the external signal interface, first cut off the signal transmission line 4 through the changeover switch 18 to ensure safety. Then, remove the signal connector 5 from the external signal interface.

[0049] To improve the stability during docking and the protection during idling of the signal connector 5, a square connecting seat 8 is integrally provided between the external power supply interface 7 and the injection molding machine 6. Locking grooves 9 are provided on both the upper and lower sides of the connecting seat 8. Locking mechanisms 10 are provided on both the upper and lower sides of the signal connector 5. The locking mechanism 10 includes a lock plate 11 that can be turned up and down and an elastic driving mechanism that drives the lock plate 11 to engage in the corresponding locking groove 9. A connecting plate 13 extends vertically from the end of the lock plate 11. One end of the connecting plate 13 away from the lock plate 11 is pivotally connected to the outside of the signal connector 5 and the rotation plane is vertically arranged. A driving member 12 is provided on the lock plate 11 to respond to external triggering to overcome the elastic force of the elastic driving mechanism and drive the lock plate 11 to disengage from the locking groove 9. The driving member 12 is plate-shaped, and it is connected to one end of the connecting plate 13 away from the lock plate 11 and bends away from the signal connector 5. The elastic driving mechanism is a spring hinge 14, and its two movable ends are respectively fixed to the opposite surfaces of the driving member 12 and the signal connector 5.

[0050] To improve the stability when the lock plate 11 is docked with the locking groove 9, an anti-disengagement groove 15 is provided on the covering surface of the lock plate 11. When the lock plate 11 is buckled in the locking groove 9, the anti-disengagement groove 15 is buckled on the opening edge of the locking groove 9 close to the external power supply interface 7, thereby improving the stability between the lock plate 11 and the locking groove 9.

[0051] In this embodiment, when the signal connector 5 needs to be docked with the external power supply interface 7 of the injection molding machine 6, first simultaneously press the driving members 12 on both sides of the signal connector 5 with two fingers, so that the driving members 12 overcome the elastic force of the elastic driving mechanism to drive the connecting plate 13 and the lock plate 11 to open outwards, so that the docking port 26 of the signal connector 5 is exposed. Then, insert the signal connector 5 into the external power supply interface 7 on the injection molding machine 6. After insertion, release the driving members 12, so that the elastic driving mechanism drives the lock plate 11 to be buckled in the corresponding locking groove 9 through the connecting plate 13, and at the same time make the anti-disengagement groove 15 buckle on the edge of the locking groove 9 to prevent the signal connector 5 from disengaging from the external power supply interface 7, thus completing the docking of the signal connector 5 and the external power supply interface 7. After the docking is completed, the external power supply interface 7 can be detected by the phase sequence detection device.

[0052] After the detection is completed, perform the above operation steps in reverse to remove the signal connector 5 from the external power supply interface 7. After the signal connector 5 is separated from the external power supply interface 7, release the driving members 12 on both sides of the signal connector 5, so that the two elastic driving mechanisms can simultaneously drive the two locking plates 11 to bite on the front end of the signal connector 5 through the corresponding connecting plates 13, so as to form an occlusion at the front end of the signal connector 5, thereby protecting the mating interface 26 of the signal connector 5. To ensure the protection effect, the total length of the two locking plates 11 after they are engaged with each other should be greater than or equal to the height of the mating interface 26, and the width of each locking plate 11 should be greater than or equal to the width of the mating interface 26, so as to form an effective occlusion.

Claims

1. An external power supply interface phase sequence detection device for an injection molding machine, characterized in that: The invention comprises a box body (1), wherein a phase sequence detection module (2) is arranged in the box body (1), a signal receiving end (3) of the phase sequence detection module (2) is coupled to a signal connector (5) via a signal transmission line (4), and when the signal connector (5) is connected to an external power interface (7) provided by an injection molding machine (6), the phase sequence detection module (2) is connected to and obtains a three-phase power signal in the external power interface (7) via the signal transmission line (4) to detect the phase sequence of the three-phase power signal; a connecting seat (8) is arranged between the external power interface (7) and the injection molding machine (6), locking grooves (9) are provided on both sides of the connecting seat (8), and locking mechanisms (10) are provided on both sides of the signal connector (5), and the locking mechanisms (10) comprise a locking plate (11) and an elastic driving mechanism for driving the locking plate (11) to engage in the corresponding locking groove (9); When the signal connector (5) is connected to the external power interface (7), the elastic drive mechanism drives the locking plate (11) to buckle into the corresponding locking groove (9) to prevent the signal connector (5) from being separated from the external power interface (7); When the signal connector (5) is separated from the external power interface (7), the elastic driving mechanism drives the two locking plates (11) to engage with the front end of the signal connector (5) to form a shield at the front end of the signal connector (5).

2. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 1, characterized in that: The locking plate (11) is provided with a driving member (12) which responds to an external trigger to overcome the elastic force of the elastic driving mechanism and drives the locking plate (11) to disengage from the locking groove (9).

3. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 2, characterized in that: A connecting plate (13) is provided at the rear end of the locking plate (11) and is pivotally connected to the outside of the signal connector (5).

4. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 3, characterized in that: The driving member (12) is in the shape of a plate, connected to an end of the connecting plate (13) away from the locking plate (11) and bent in a direction away from the signal connector (5).

5. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 4, wherein: The elastic driving mechanism is a spring hinge (14), two movable ends of which are respectively connected to the opposite surfaces of the driving member (12) and the signal connector (5).

6. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 1, wherein: The covering surface of the locking plate (11) is provided with an anti-slip groove (15). When the locking plate (11) is buckled in the locking groove (9), the anti-slip groove (15) is buckled in the opening edge of the locking groove (9) close to the external power interface (7).

7. An external power supply interface phase sequence detection device for an injection molding machine according to any one of claims 1 to 6, characterized in that: The signal transmission line (4) comprises three live signal receiving lines (16) respectively used for receiving three-phase power supply signals in the external power supply interface (7).

8. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 7, characterized in that: The signal transmission line (4) further comprises a neutral line signal receiving line (17), one end of which is electrically connected to one of the live line signal receiving lines (16), and the other end of which is integrated into the signal connector (5), and a first indicator is arranged on the neutral line signal receiving line (17); when the signal connector (5) is connected to the external power supply interface (7), the neutral line signal receiving line (17) is used to receive the neutral line signal in the external power supply interface (7) to determine whether the neutral line in the external power supply interface (7) is out of phase, and to give a corresponding prompt through the first indicator.

9. The phase sequence detection device for the external power supply interface of an injection molding machine according to claim 7, characterized in that: The signal transmission line (4) further includes a ground wire signal receiving line (25). One end of the ground wire signal receiving line (25) is electrically connected to one of the live wire signal receiving lines (16), and the other end is integrated into the signal connector (5). A second indicator is provided on the ground wire signal receiving line (25). When the signal connector (5) is docked with the external power supply interface (7), the ground wire signal receiving line (25) is used to receive the ground wire signal in the external power supply interface (7) to determine whether the ground wire in the external power supply interface (7) is out of phase, and corresponding prompts are given through the second indicator.

10. A phase sequence detection device for an external power supply interface of an injection molding machine according to any one of claims 1 to 6, characterized in that: A changeover switch (18) for switching on and off the signal transmission line (4) in response to an external trigger is provided on the signal transmission line (4).

11. A phase sequence detection device for an external power supply interface of an injection molding machine according to any one of claims 1 to 6, characterized in that: A phase sequence warning module (19) for giving corresponding prompts according to the phase sequence detection situation is coupled to the phase sequence detection module (2).

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