WO2022254645A1

WO2022254645A1 - Injection molding machine control panel

Info

Publication number: WO2022254645A1
Application number: PCT/JP2021/021141
Authority: WO
Inventors: 石徹白智
Original assignee: ファナック株式会社
Priority date: 2021-06-03
Filing date: 2021-06-03
Publication date: 2022-12-08

Abstract

A control panel (10, 10A-10F) for an injection molding machine (100) is equipped with: a plurality of operation buttons (12); a plurality of detection circuits (14) which each have a detection switch (20) which turns on and off in response to the operation of an operation button (12), and detect operation of the operation buttons (12); and a connection interface (16, 16D) for connecting an external switch (30), which turns on and off in response to operation of an external button (24), to one or more of the plurality of detection circuits (14).

Description

Operation panel of injection molding machine

The present invention relates to the operation panel of an injection molding machine.

A control panel for operating an injection molding machine is known (see, for example, JP-A-2008-272872).

The operation panel has multiple operation buttons operated by the operator. If an operating button fails, the operator cannot use that operating button. As a result, it becomes difficult for the operator to perform the intended operation. In addition, even if a malfunctioning operation button is to be repaired, the repair work takes time.

An object of the present invention is to solve the above-mentioned problems.

An aspect of the present invention is an operation panel for an injection molding machine, which has a plurality of operation buttons and detection switches that turn on and off in response to operation of the operation buttons, and that detects operations of the operation buttons. and a connection interface for connecting an external switch that is turned on and off according to operation of an external button to at least one of the plurality of detection circuits.

According to the aspect of the present invention, even if the operation button fails, the operator can continue to operate the injection molding machine without delay.

1 is a front view of a control panel according to an embodiment; FIG. FIG. 2 is a diagram illustrating an injection molding machine. FIG. 3 is a schematic diagram illustrating an electrical configuration of the operation panel of FIG. 1; FIG. 4 is a diagram showing a state in which the switch in FIG. 3 is turned on. FIG. 5 is a diagram showing a state in which an alternative input device is connected to the control panel of FIG. FIG. 6 is a diagram showing a state in which the external switch in FIG. 5 is turned on. FIG. 7 is a diagram showing a control panel according to modification 1 and an alternative input device connected to the control panel. FIG. 8 is a diagram showing a control panel according to modification 2 and an alternative input device connected to the control panel. FIG. 9 is a diagram showing a control panel according to modification 3 and an alternative input device connected to the control panel. FIG. 10 is a diagram showing a control panel according to modification 4, a switching device connected to the control panel, and an alternative input device connected to the control panel via the switching device. 11A and 11B are diagrams showing a control panel and a short-circuit connector according to Modification 5. FIG. FIG. 12 is a schematic diagram of a control panel according to Modification 6. As shown in FIG. FIG. 13 is a diagram showing a control panel according to modification 8 and a plurality of alternative input devices connected to the control panel.

[Embodiment]
FIG. 1 is a front view of a control panel 10 according to an embodiment. FIG. 2 is a diagram illustrating the injection molding machine 100. As shown in FIG.

The operation panel (operation panel of the injection molding machine 100) 10 is an input device provided to the operator to operate the injection molding machine 100. The operation panel 10 is connected to the control device (numerical control device) CNC of the injection molding machine 100 (see FIG. 3).

As shown in FIG. 1, the operation panel 10 has a plurality of operation buttons 12. A plurality of operation buttons 12 are buttons for an operator to operate. In the example of this embodiment, the multiple operation buttons 12 include multiple mode selection buttons (12A to 12C) and multiple drive instruction buttons (12D to 12K). Note that the arrangement of the plurality of operation buttons 12 on the operation panel 10 is not limited to the example shown in FIG. Also, the operation panel 10 may be provided with operation buttons 12 other than these operation buttons (12A to 12K).

Each of the plurality of mode selection buttons is an operation button 12 for setting the operation mode of the injection molding machine 100. The plurality of mode selection buttons (operation buttons 12) has a fully automatic mode button 12A, a semiautomatic mode button 12B, and a manual mode button 12C. The fully automatic mode button 12A is an operation button 12 for setting the operation mode of the injection molding machine 100 to the fully automatic mode. The semi-automatic mode button 12B is an operation button 12 for setting the operation mode of the injection molding machine 100 to the semi-automatic mode. The manual mode button 12C is an operation button 12 for setting the operation mode of the injection molding machine 100 to the manual mode. When the operation mode is set to the manual mode, the injection molding machine 100 operates according to each of a plurality of drive instruction buttons 12E to 12K, which will be described later, being operated.

Each of the plurality of drive instruction buttons is an operation button 12 for instructing the injection molding machine 100 to start operation. Here, the injection molding machine 100 includes a plurality of drive units. The multiple drives include, for example, a clamping device 102 , an injection device 104 and an ejector 106 . The mold clamping device 102 is a device for opening and closing (mold opening/mold closing) a mold 108 . The injection device 104 is a device that injects molding material into a mold 108 . The injection device 104 includes a cylinder 104a, a heater, and a screw 104b (the heater is not shown). The cylinder 104a is a cylindrical member. A molding material is put into the cylinder 104a. Molding material is the material of the molded article. The heater is, for example, a band heater. The heater is attached to cylinder 104a. The heater heats the cylinder 104a (the molding material in the cylinder 104a). The screw 104b is installed within the cylinder 104a. The screw 104b rotates and retracts within the cylinder 104a. A predetermined amount of molding material is thereby accumulated (metered) in the forward portion within the cylinder 104a. During weighing, the molding material is melted by shearing by the screw 104b and heating by the heater. After the metering is completed, the screw 104b advances inside the cylinder 104a. Thereby, the molten molding material is injected into the mold 108 (injection). 2, the mold 108 and the injection device 104 are separated from each other. This illustration is different from the actual ejection. When injection is performed, the mold 108 and the injection device 104 are actually connected to each other (nozzle touch). The ejection device 106 comprises one or more (two in the illustration of FIG. 2) ejector pins 106a. The ejection device 106 ejects (ejects) the ejector pin 106 a into the mold 108 . Thereby, the molded product is taken out from the mold 108 .

A plurality of drive instruction buttons (operation buttons 12) has a cycle start button 12D. The cycle start button 12D is an operation button 12 for causing the injection molding machine 100 to start a molding cycle. Here, a molding cycle is a cycle that defines a flow of operations that the injection molding machine 100 executes to produce a molded product. The molding cycle includes, for example, the operations described above (mold closing, metering, injection, mold opening, ejection, etc.). When the cycle start button 12D is operated, the injection molding machine 100 automatically executes at least one molding cycle. The number of cycles executed in response to one operation of the cycle start button 12D differs according to the operation mode of the injection molding machine 100. FIG. When the operation mode is the fully automatic mode, the molding cycle is repeated over multiple cycles. When the operating mode is semi-automatic mode, only one molding cycle is performed.

Of the plurality of drive instruction buttons 12E to 12K illustrated, the drive instruction button 12E is the operation button 12 for causing the mold clamping device 102 to open the mold. The drive instruction button 12F is an operation button 12 for causing the mold clamping device 102 to close the mold. The drive instruction button 12G is an operation button 12 for ejecting (advancing) the ejector pin 106a of the ejection device 106 toward the mold 108. As shown in FIG. The drive instruction button 12H is an operation button 12 for returning (retracting) the ejector pin 106a of the ejection device 106 after the ejection operation. The drive instruction button 12I is an operation button 12 for advancing the screw 104b of the injection device 104. As shown in FIG. The drive instruction button 12J is an operation button 12 for retracting the screw 104b of the injection device 104. As shown in FIG. The drive instruction button 12K is an operation button 12 for rotating the screw 104b of the injection device 104. As shown in FIG. Each of the plurality of drive instruction buttons 12E-12K is operated when the operation mode of the injection molding machine 100 is the manual mode. That is, when the injection molding machine 100 is in the manual mode, the operator can operate each drive section of the injection molding machine 100 separately by using each of the plurality of drive instruction buttons 12E to 12K.

FIG. 3 is a schematic diagram illustrating the electrical configuration of the operation panel 10 of FIG. In addition, in FIG. 3, each of the plurality of operation buttons 12 is not particularly distinguished except for the cycle start button 12D. For the sake of explanation, FIG. 3 also shows the control unit CNC in addition to the operation panel 10.

As shown in FIG. 3, the operation panel 10 further includes a plurality of detection circuits 14 and a connection interface 16.

Each of the plurality of detection circuits 14 is a circuit that detects whether or not the corresponding operation button 12 has been operated. A plurality of detection circuits 14 correspond to different operation buttons 12 . The number of detection circuits 14 is the same as the number of operation buttons 12 .

Each of the multiple detection circuits 14 has a signal line 18 and a detection switch 20 . Each of the multiple signal lines 18 is connected to a power supply P. As shown in FIG. In addition, in this embodiment, the power source P is provided in the controller CNC. In this regard, in the illustration of FIG. 3 , the control panel 10 further comprises a power line 22 . The power line 22 is connected to the power source P. Each of the plurality of signal lines 18 is connected to a power line 22 . Thereby, each of the plurality of signal lines 18 is connected to the power supply P. As shown in FIG.

The detection switch 20 is arranged on the signal line 18 . Hereinafter, for each of the plurality of signal lines 18, one end of the signal line 18 on the power supply line 22 side when viewed from the detection switch 20 is referred to as an "input end 18a". Also, for each of the plurality of signal lines 18, the other end opposite to the input end 18a is called an "output end 18b".

FIG. 4 is a diagram showing a state in which the detection switch 20 in FIG. 3 is turned on.

The detection switch 20 is a normally-off switch that is turned on according to the operation of the corresponding operation button 12 . While the detection switch 20 is on, the input terminal 18a and the output terminal 18b of the signal line 18 on which the detection switch 20 is arranged are electrically connected. As a result, the voltage of the power supply P is output from the output terminal 18b to the controller CNC (broken line arrow in FIG. 4). FIG. 4 illustrates a case where the cycle start button 12D is operated as an example.

The control device CNC is an electronic device (arithmetic device) equipped with a processor and memory. A predetermined program for controlling the injection molding machine 100 is stored in the memory of the controller CNC. A processor of the controller CNC controls the injection molding machine 100 by executing a predetermined program. For example, each of the mold clamping device 102, the injection device 104, and the ejection device 106 includes one or more motors as drive sources. The controller CNC controls each motor (more specifically, the amplifier that drives each motor) based on a predetermined program. Thereby, the control device CNC controls each of the mold clamping device 102 , the injection device 104 and the ejection device 106 .

Also, the controller CNC determines from which output terminal 18b of the plurality of output terminals 18b the voltage is input. Based on the determination result, the controller CNC determines which operation button 12 among the plurality of operation buttons 12 has been operated (recognizes the operation of the operation panel 10). Thereby, the control device CNC can perform control according to the operated operation button 12 . It should be noted that the configuration of the control unit CNC for realizing each of the above judgments and the above control can be applied to known techniques, so the details will be omitted.

By the way, if the operation button 12 fails, the operator cannot turn on the detection switch 20 corresponding to that operation button 12 . Therefore, for example, when the cycle start button 12D fails, the operator cannot cause the injection molding machine 100 (control device CNC) to automatically execute the molding cycle.

Moreover, the cycle start button 12D is an operation button 12 that is operated in both the fully automatic operation mode and the semi-automatic operation mode. Therefore, the cycle start button 12</b>D is likely to be operated more frequently than the other operation buttons 12 . The operation button 12 (cycle start button 12D), which is operated frequently, is prone to failure (for example, failure due to component fatigue).

Based on the above explanation, the connection interface 16 will be explained. The connection interface 16 is an interface for connecting the alternative input device 26 to the operation panel 10 . The connection interface 16 is installed on the side of the operation panel 10 in this embodiment (see FIG. 1).

The connection interface 16 corresponds to one of the plurality of operation buttons (detection circuits 14) 12. In this embodiment, the connection interface 16 corresponds to the cycle start button 12D. Therefore, in the following description, the cycle start button 12D and the detection circuit 14 corresponding to the cycle start button 12D will be described.

The connection interface 16 has a first terminal 16a and a second terminal 16b. The first terminal 16a is a terminal connected between the detection switch 20 and the power supply P. As shown in FIG. The second terminal 16b is a terminal of the signal line 18 that is connected between the detection switch 20 and the output terminal 18b. Note that the first terminal 16a is connected to the power line 22 in this embodiment. Without being limited to this, the first terminal 16a may be connected between the detection switch 20 and the input terminal 18a, for example.

FIG. 5 is a diagram showing a state in which the alternative input device 26 is connected to the operation panel 10 of FIG.

The alternative input device 26 will be described with reference to FIG. Alternate input device 26 comprises an external button 24 , an external signal line 28 and an external switch 30 .

The external button 24 is a button operated by the operator. The external signal line 28 is a signal line connected to the first terminal 16a and the second terminal 16b. The external switch 30 is arranged on the external signal line 28 . In the following description, one end of the external signal line 28 on the side of the first terminal 16a when viewed from the external switch 30 is called an "input end 28a". The other end of the external signal line 28 on the opposite side (second terminal 16b) to the input end 28a as viewed from the external switch 30 is called an "output end 28b".

FIG. 6 is a diagram showing a state in which the external switch 30 in FIG. 5 is turned on.

The external switch 30 is a normally-off switch that is turned on when the external button 24 is operated. While the external switch 30 is on, the input terminal 28a of the external signal line 28 and the output terminal 28b of the external signal line 28 are electrically connected. Then, as shown in FIG. 6, the voltage of the power supply P is input to the control device CNC via the power supply line 22, the external signal line 28, and the signal line 18 (on the side of the output end 18b) (the dashed arrow in FIG. 6). ).

The operator operates the external button 24 if the cycle start button 12D fails. Thereby, the operator can cause the injection molding machine 100 (control device CNC) to automatically execute the molding cycle.

[Modification]
Some specific examples of modifications according to the above embodiment will be described below. In addition, the same code|symbol as the said embodiment is attached|subjected to the component already demonstrated by the said embodiment. Further, explanations that overlap with the above embodiment are omitted as much as possible.

(Modification 1)
FIG. 7 is a diagram showing the operation panel 10 (10A) according to Modification 1 and the alternative input device 26 connected to the operation panel 10A.

In the embodiments (FIGS. 1 to 6), voltage can be output from the output terminal 18b regardless of whether the detection switch 20 of the detection circuit 14 or the external switch 30 of the alternative input device 26 is turned on. Here, regarding the failure of the cycle start button 12D, there is a possibility that the detection switch 20 cannot be turned off from on. In this case, there is a possibility that the molding cycle will be executed at a timing unintended by the operator.

Therefore, as shown in FIG. 7, the operation panel 10A of this modification includes a relay 32. The relay 32 has a first changeover switch 34 and a changeover control section 36 . The first switch 34 is arranged on the input side of the signal line 18 of the detection circuit 14 . The switching control unit 36 is a circuit including a coil (electromagnet). This coil produces magnetic force according to the voltage inputted. ON and OFF of the first changeover switch 34 are switched according to the magnetic force generated in the changeover control section 36 (coil). Voltage control necessary for controlling the magnetic force of the coil is performed by, for example, the control device CNC (processor of the control device CNC).

According to the operation panel 10A, by turning off the first changeover switch 34, the operation of the cycle start button 12D can be disabled. As a result, even if the state of the detection switch 20 of the detection circuit 14 cannot be switched from on to off, there is no possibility that the controller CNC will recognize an instruction not intended by the operator.

(Modification 2)
FIG. 8 is a diagram showing the operation panel 10 (10B) according to Modification 2 and the alternative input device 26 connected to the operation panel 10B.

This modification will be disclosed in relation to modification 1. As shown in FIG. 8, a second changeover switch 38 may be arranged between the second terminal 16b and the output side of the signal line 18. As shown in FIG. In this case, the switching control unit 36 may switch the second contact between on and off. Thereby, the operation to the external button 24 can be invalidated as needed.

(Modification 3)
In Modifications 1 and 2, by applying a so-called relay circuit, switching between activation and deactivation of the cycle start button 12D is realized. Without being limited to this, the operator may manually switch between enabling and disabling the cycle start button 12D. This modified example will be described below.

FIG. 9 is a diagram showing the operation panel 10 (10C) according to Modification 3 and the alternative input device 26 connected to the operation panel 10C.

The operation panel 10C includes a switching button (switching operation unit) 40 and a switching switch 42, as shown in FIG. The switching button 40 is operated by an operator. The changeover switch 42 is switched according to the operation of the changeover button 40 . Depending on the switching state, the changeover switch 42 conducts the first terminal 16a and the power supply line 22 (power supply P). Alternatively, the changeover switch 42 electrically connects the input end 18a of the signal line 18 and the power supply line 22 (power supply P).

When the first terminal 16a and the power supply line 22 (power supply P) are electrically connected through the changeover switch 42 (the solid line in FIG. 9), the external button 24 can be operated by connecting the alternative input device 26 to the connection interface 16. is valid. Further, in this case, since the input terminal 18a and the power supply P are disconnected, the operation of the cycle start button 12D is invalid.

When the input terminal 18a of the signal line 18 and the power line 22 (power source P) are electrically connected through the switch 42 (broken line in FIG. 9), the operation of the cycle start button 12D is valid. Instead, even if the alternative input device 26 is connected to the connection interface 16, the operation of the external button 24 is disabled.

(Modification 4)
FIG. 10 is a diagram showing the operation panel 10 (10D) according to Modification 4, the switching device 44 connected to the operation panel 10D, and the alternative input device 26 connected to the operation panel 10D via the switching device 44. is.

The switching button 40 and the switching switch 42 may be provided in the switching device 44 illustrated in FIG. In this case, the alternative input device 26 is connected via the switching device 44 to the connection interface 16 (16D) of the operation panel 10D. Note that the connection interface 16D differs from the connection interface 16 of the embodiment in that it includes a third terminal 16c. The third terminal 16c is connected to the input terminal 18a.

The changeover switch 42 conducts the first terminal 16a and the third terminal 16c (solid line in FIG. 10). In this case, operation of the cycle start button 12D is effective.

Also, when the changeover switch 42 is switched, the changeover switch 42 conducts the first terminal 16a and the input terminal 28a of the alternative input device 26 (broken line in FIG. 10). In this case, operation of the external button 24 is effective. In this case, it is necessary to connect the output terminal 28b of the alternative input device 26 and the second terminal 16b. This is achieved, for example, via a switching device 44, as shown in FIG.

(Modification 5)
FIG. 11 is a diagram showing an operation panel 10D and a short-circuit connector 46 according to Modification 5. As shown in FIG.

Regarding the operation panel 10D of FIG. 10, the operator may be provided with the short-circuit connector 46 illustrated in FIG. The short-circuit connector 46 is a connector device connectable to the connection interface 16D. The short-circuit connector 46 includes, for example, a first short-circuit terminal 46a and a second short-circuit terminal 46b. The first short-circuit terminal 46a is a terminal for connecting to the first terminal 16a. The second short-circuit terminal 46b is a terminal for connecting to the third terminal 16c. The first short-circuit terminal 46 a and the second short-circuit terminal 46 b are connected to each other inside the short-circuit connector 46 . Therefore, when the short-circuit connector 46 is connected to the connection interface 16</b>D, the first terminal 16 a and the third terminal 16 c are connected via the short-circuit connector 46 . In this case, operation of the cycle start button 12D is effective.

When the operator uses the external button 24, the short-circuit connector 46 is removed from the connection interface 16D. An alternative input device 26 is connected to the connection interface 16D. The alternative input device 26 is connected to the first terminal 16a and the second terminal 16b (the third terminal 16c may be left open) as in the embodiment. This enables the operation of the external button 24 .

(Modification 6)
FIG. 12 is a schematic diagram of the operation panel 10 (10E) according to Modification 6. As shown in FIG.

As shown in FIG. 12, the operation panel 10E further includes a warning section 48. The warning unit 48 is an element that warns the operator when the cycle start button 12D has been operated a specified number of times. Specifically, the warning unit 48 is, for example, a lamp that lights up. In this case, the warning unit (lamp) 48 lights up when the cycle start button 12D has been operated a specified number of times.

The number of times the cycle start button 12D is operated is counted, for example, on the control device CNC side. For example, the controller CNC counts the number of times voltage is input through the output terminal 18b as the number of operations. In this regard, the control device CNC appropriately performs necessary processing for counting as the number of operations. In addition, when the number of times of operation reaches the prescribed number, the control device CNC controls the warning section 48 to cause the warning section 48 to perform the aforementioned warning (illumination of the lamp).

For example, the manufacturer of the operation panel 10E provides the operator with specific details of the specified number of times. For example, the manufacturer of the operation panel 10E considers the fatigue rate of the parts of the cycle start button 12D and provides the operator with the number of times of operation for recommending repair and inspection of the cycle start button 12D as a specified number of times.

According to this modified example, the risk of the cycle start button 12D malfunctioning itself is reduced.

(Modification 7)
So far, an example of substituting the cycle start button 12D for the external button 24 has been described. The operation button 12 substituted by the external button 24 is not limited to the cycle start button 12D.

For example, the external button 24 may replace any one of the plurality of operation buttons 12A-12C and 12E-12K illustrated in FIG. In particular, it is preferable that the external button 24 can substitute for any one of the drive instruction buttons 12E to 12K. That is, each of the plurality of drive instruction buttons 12E to 12K is an operation button 12 that is frequently operated by the operator, for example, in each of the setup work of the injection molding machine 100 and the shutdown work of the injection molding machine 100 . If any one of the plurality of drive instruction buttons 12E to 12K fails, the operator cannot perform the setup work and the shutdown work.

Therefore, it is useful for the operator that any one of the plurality of drive instruction buttons 12E to 12K can be replaced by the external button 24. The operation button 12 to be replaced by the external button 24 can be changed by changing the signal line 18 to which the second terminal 16b of the connection interface 16 is connected. For example, the second terminal 16b of the connection interface 16 and the signal line 18 of the detection circuit 14 that detects the operation of the drive instruction button 12E are connected. In this case, by connecting the alternative input device 26 to the connection interface 16, the external button 24 substitutes for the drive instruction button 12E.

(Modification 8)
FIG. 13 is a diagram showing the operation panel 10 (10F) according to Modification 8 and a plurality of alternative input devices 26 connected to the operation panel 10F.

This modification will be disclosed in relation to Modification 7. As shown in FIG. 13 , the operation panel 10F may have multiple connection interfaces 16 . Each of the multiple connection interfaces 16 corresponds to a different operation button 12 .

It should be noted that the present invention is not limited to the above-described embodiments and modifications, and can take various configurations without departing from the gist of the present invention.

[Invention obtained from the embodiment]
Inventions that can be understood from the above-described embodiments and modifications will be described below.

A control panel (10, 10A to 10F) for an injection molding machine (100), comprising a plurality of operation buttons (12) and a detection switch (20) that turns on and off in accordance with the operation of the operation button (12). a plurality of detection circuits (14) for detecting the operation of the operation button (12); and a connection interface (16, 16D) for connecting to at least one of.

As a result, even if the operation button (12) fails, the operator can issue instructions to the control device (CNC) by operating the external button (24). Moreover, the operator who notices that the operation button (12) has failed can quickly and easily attach the substitute input device (26) to the operation panel (10, 10A-10F) on the spot.

The plurality of operation buttons (12) have drive instruction buttons (12D-12K) for instructing the injection molding machine (100) to start operation, and the operation panel (10, 10A-10F) It may have the connection interface (16) corresponding to the drive instruction buttons (12D to 12K).

The operation panel (10A, 10B) of the injection molding machine (100) includes a changeover switch (34) for enabling or disabling the operation of the operation button (12), and a and a switching control unit (36) for controlling the switching switch. Thereby, the operation button (12) can be switched between valid and invalid by the switching control section (36).

The operation panel (10C) of the injection molding machine (100) includes a changeover switch (42) for enabling or disabling the operation of the operation button (12), and an operator operating the switch (42). A switching operation unit (40) for switching the switch (42) may further be provided. This allows the operator to manually switch between valid and invalid states of the operation button (12).

The detection circuit (14) has an output end (18b) connected to a controller (CNC) of the injection molding machine (100) and an input end (18a) opposite to the output end (18b). a signal line (18), the detection switch (20) is installed on the signal line (18), and the connection interface (16D) includes a first terminal (16a) connected to a power supply P; A second terminal (16b) connected between the output terminal (18b) and the detection switch (20) of the signal line (18), and a third terminal (16c) connected to the input terminal (18a). ) and may have As a result, when the first terminal (16a) and the second terminal (16b) are connected via the external switch (30), the operation button (12) is disabled while the external button (24) is enabled. become. Further, when the first terminal (16a) and the third terminal (16c) are connected, the operation button (12) becomes effective.

The operation panel (10E) of the injection molding machine (100) may further include a warning section (48) that issues a warning when the operation button (12) has been operated a predetermined number of times.

DESCRIPTION OF SYMBOLS 10 (10A-10F)... Operation panel 12... Operation button 12D-12K... Drive instruction button 14... Detection circuit 16 (16D)... Connection interface 18... Signal line 18a... Input end 18b... Output end 20... Detection switch (switch) 24: External button 30: External switch 34: First changeover switch (changeover switch)
36... Switching control unit 40... Switching button (switching operation unit) 42... Switching switch 46... Short-circuit connector 48... Warning unit

Claims

An operation panel (10, 10A to 10F) of an injection molding machine (100),
a plurality of operation buttons (12);
a plurality of detection circuits (14) having detection switches (20) that are turned on and off in accordance with the operation of the operation button and that detect the operation of the operation button;
connection interfaces (16, 16D) for connecting an external switch (30) that is turned on and off according to the operation of an external button (24) to at least one of the plurality of detection circuits;
An injection molding machine operation panel.
A control panel for an injection molding machine according to claim 1,
The plurality of operation buttons have drive instruction buttons (12D to 12K) for instructing the injection molding machine to start operation,
The operation panel of an injection molding machine, wherein the operation panel has the connection interface corresponding to the drive instruction button.
The operation panel of the injection molding machine according to claim 1 or 2,
a changeover switch (34) for switching between enabling and disabling the operation of the operation button;
a switching control unit (36) that controls the switching switch according to the input current;
The operation panel of the injection molding machine, further comprising
The operation panel of the injection molding machine according to claim 1 or 2,
a changeover switch (42) for switching between enabling and disabling the operation of the operation button;
a switching operation unit (40) for switching the switching switch by being operated by an operator;
The operation panel of the injection molding machine, further comprising
A control panel for an injection molding machine according to claim 1 or 2,
said detection circuit having a signal line (18) having an output end (18b) connected to a controller (CNC) of an injection molding machine and an input end (18a) opposite said output end;
The detection switch is installed on the signal line,
The connection interface (16D) includes a first terminal (16a) connected to a power supply (P), and a second terminal (16b) connected between the output end of the signal line and the detection switch. , and a third terminal (16c) connected to the input end.
A control panel for an injection molding machine according to any one of claims 1 to 5,
A control panel for an injection molding machine, further comprising a warning unit (48) that warns when the number of operations of the operation button reaches a predetermined number.