CN117881519A - Management device - Google Patents

Abstract

A management device (30) of an embodiment acquires the opening/closing states of a plurality of safety doors (22), and determines whether or not to stop a peripheral device (14) that can access a mold clamping device (18) based on the acquired opening/closing states and a table stored in a storage unit (33). In the table, operation information indicating whether or not the peripheral device (14) is permitted to operate is associated with each combination mode of opening/closing states of a plurality of safety doors (22).

Description

Management device

Technical Field

The present invention relates to a management device.

Background

The injection molding machine has a mold clamping device and an injection device. The mold clamping device and the injection device are surrounded by a safety cover. For example, japanese patent application laid-open No. 2020-006633 discloses an injection molding machine surrounded by a safety cover. An opening is arranged on the safety cover, and a safety door is arranged on the opening. The injection molding machine is isolated from the outside by a safety cover when the safety door closes the opening. Thereby, user safety with respect to the injection molding machine is ensured.

Disclosure of Invention

As peripheral devices that can access a mold clamping device of an injection molding machine, there are a molded article take-out device and the like that take out a molded article from the mold clamping device. The molded article takeout device is sometimes surrounded by a safety cover. The safety cover is also provided with an opening, and a safety door is provided in the opening.

The opening/closing information of the safety door provided in the opening of the safety cover surrounding the mold clamping device is not shared with that of the safety door provided in the opening of the safety cover surrounding the molded article takeout device. Therefore, there is a concern that the peripheral device is unnecessarily stopped due to the opening of the opening that is independent of the opening provided on the safety cover for separating the peripheral device from the outside.

The present invention aims to solve the above problems.

A mode of the present invention is a management apparatus that manages a plurality of monitoring apparatuses for monitoring a dangerous state caused by access to peripheral devices that can access an injection molding machine, the management apparatus including: an acquisition unit that acquires the monitoring states detected by the plurality of monitoring devices, respectively; a storage unit that stores a table associating operation information indicating whether or not to permit operation of the peripheral device with each combination mode of the monitoring states that can be combined by the plurality of monitoring devices; a determination unit configured to determine whether to stop the peripheral device based on the respective monitor states and the table acquired by the acquisition unit; and a signal output unit that outputs a stop signal to the peripheral device when it is determined to stop the peripheral device.

According to the aspect of the present invention, the peripheral device can be stopped only on the assumption that the user can access the peripheral device, and as a result, user safety with respect to the peripheral device can be appropriately ensured while ensuring operability of the user.

Drawings

Fig. 1 shows an injection molding system of an embodiment.

Fig. 2 is a top cross-sectional view of the injection molding system along II-II of fig. 1.

Fig. 3 is a block diagram showing the structure of the injection molding system.

Fig. 4 is a block diagram showing the configuration of the management apparatus.

Fig. 5 shows a table stored in the storage unit.

Fig. 6 shows the injection molding system at the time of maintenance from the same point of view as fig. 2.

Fig. 7 is a flowchart showing a flow of management processing of the management apparatus.

Fig. 8 shows an injection molding system of modification 1.

Fig. 9 shows a table of modification 1.

Fig. 10 shows an injection molding system of modification 2.

Fig. 11 shows a table of modification 2.

Fig. 12 shows the injection molding system at the time of maintenance from the same point of view as fig. 10.

Fig. 13 is a block diagram showing a modification of the configuration of the management apparatus.

Fig. 14 shows an example of a selection screen.

Detailed Description

(embodiment)

Fig. 1 shows a structure of an injection molding system 10 according to an embodiment. Fig. 2 is a top cross-sectional view of injection molding system 10 along II-II of fig. 1. The injection molding system 10 includes an injection molding machine 12, a peripheral device 14, and a safety cover 16.

The injection molding machine 12 is an apparatus for molding a molded article. The injection molding machine 12 has a mold clamping device 18 and an injection device 20. The mold clamping device 18 is a device that performs a mold closing operation and a mold opening operation, and includes a mold 180. The injection device 20 is a device that performs an injection operation, a pressure maintaining operation, and a metering operation, and includes a nozzle 200. The nozzle 200 extends in the mold opening direction of the mold clamping device 18. The injection device 20 injects the molding material toward the mold clamping device 18 from a direction along the mold opening direction of the mold clamping device 18.

The mold closing operation is an operation of closing the metal mold 180. The mold opening operation is an operation of opening the metal mold 180. The injection operation is an operation of injecting a molding material from the nozzle 200 into the cavity of the mold 180. The pressure maintaining operation is an operation of applying pressure to the molding material injected into the cavity of the mold 180. The metering action is an action of metering the molding material.

The peripheral device 14 is a device that can access the mold clamping device 18. In the present embodiment, a molded article removing apparatus is used as the peripheral device 14. The molded article removing device removes molded articles from the mold 180. The molded article take-out device may be a robot. The peripheral device 14 is not limited to the molded article takeout apparatus. For example, the peripheral device 14 may be a mold mounting device, a mold replacing device, or a second injection device.

The mold attachment device is a device for attaching the mold 180 to the mold clamping device 18. The mold replacement device is a device that replaces the mold 180 mounted on the mold clamping device 18 with another mold. The second injection device is a different injection device than injection device 20. The second injection device injects the molding material toward the mold clamping device 18 from a direction intersecting the mold opening direction of the mold clamping device 18.

The safety shield 16 is a component that surrounds at least the injection molding machine 12. In the present embodiment, the safety cover 16 surrounds the injection molding machine 12 and the peripheral device 14. The safety cover 16 has a plurality of openings (gates), and a safety door 22 is provided for each opening. The plurality of safety doors 22 open and close the openings, respectively. An operation panel 23 is provided in the safety cover 16. The operation panel 23 is a device for operating the injection molding machine 12 and the peripheral device 14. The operation panel 23 has a touch panel, operation buttons, and the like.

In the present embodiment, the safety cover 16 has a first cover 181 that partitions the injection molding machine 12 from the outside and a second cover 182 that partitions the peripheral device 14 from the outside. The first cover 181 has a front wall, a rear wall, a right wall, and a left wall with the operation panel 23 as a front surface. The second cover 182 has a rear wall, a right wall, and a left wall with the operation panel 23 as a front surface. The right and left walls of the second cover 182 are connected to the rear wall of the first cover 181. The peripheral device 14 is disposed between the right wall and the left wall of the second cover 182.

The purge opening G1 and the front opening G2 are formed at intervals in the left-right direction at the front wall of the first cover 181. The purge opening G1 is provided in front of the injection device 20. The front opening G2 is provided in front of the mold clamping device 18. A rear opening G3 is formed in the rear wall of the first cover 181. The rear opening G3 is provided rearward of the mold clamping device 18. A sub-opening G4 is formed in the rear wall of the second cover 182. The sub-opening G4 is formed at the rear of the peripheral device 14.

Fig. 3 is a block diagram showing the structure of the injection molding system 10. In the injection molding machine 12, an open/close detection sensor 24 is provided corresponding to each of the plurality of safety doors 22. The plurality of opening/closing detection sensors 24 are monitoring devices for monitoring dangerous states caused by access to the peripheral devices 14, respectively. The plurality of opening/closing detection sensors 24 detect opening/closing of the opening of the corresponding security door 22, respectively. The plurality of open/close detection sensors 24 output detection signals to a control device 26 of the injection molding machine 12, respectively.

The control device 26 is a device that controls the injection molding machine 12. The controller 26 controls the mold clamping device 18 to cause the mold clamping device 18 to perform a mold closing operation or a mold opening operation. The control device 26 controls the injection device 20 to cause the injection device 20 to perform an injection operation, a pressure maintaining operation, or a metering operation.

The control device 28 of the peripheral 14 is connected to the control device 26 via a wired or wireless communication path. The control device 28 is a device that controls the peripheral 14. The control device 28 controls the peripheral device 14 to cause the peripheral device 14 to execute a predetermined operation. In the present embodiment, the control device 28 causes the peripheral equipment 14 (molded article takeout device) to execute a molded article takeout operation.

In the present embodiment, the control device 26 includes a management device 30. Fig. 4 is a block diagram showing the configuration of management device 30. The management device 30 manages the open/closed states of the plurality of safety doors 22. The management device 30 includes a signal processing unit 32, a storage unit 33, a display unit 34, and an input unit 35.

The signal processing unit 32 is configured by a processor such as a CPU or GPU, for example. The storage unit 33 includes volatile memory such as RAM, and nonvolatile memory such as ROM, flash memory, and hard disk. At least a part of the storage unit 33 may be provided in the processor.

The display section 34 displays information based on the signal supplied from the signal processing section 32. The display unit 34 may be provided on the operation panel 23. The display unit 34 may be a liquid crystal display. The input unit 35 outputs information input in response to a user operation to the signal processing unit 32. The input unit 35 includes the operation panel 23.

The signal processing unit 32 includes an acquisition unit 36, a determination unit 38, a signal output unit 40, and a notification unit 42. The acquisition unit 36, the determination unit 38, the signal output unit 40, and the notification unit 42 can be realized by the signal processing unit 32 executing a program stored in the storage unit 33. At least one of the acquisition unit 36, the determination unit 38, the signal output unit 40, and the notification unit 42 may be implemented by an integrated circuit such as an ASIC or FPGA. At least one of the acquisition unit 36, the determination unit 38, the signal output unit 40, and the notification unit 42 may be configured by a circuit including a discrete device.

The acquisition unit 36 acquires the opening/closing states of the plurality of safety doors 22 based on the detection signals output from the respective opening/closing detection sensors 24. The determination unit 38 determines whether to stop the peripheral device 14 based on the opening/closing state acquired by the acquisition unit 36 and the table stored in the storage unit 33. When it is determined to stop the peripheral device 14, the signal output unit 40 outputs a stop signal to the peripheral device 14. The notification unit 42 notifies the user of an abnormality when the open/close state acquired by the acquisition unit 36 does not exist in the table. For example, the notification unit 42 may cause a character or the like indicating an abnormality to be displayed on the display screen of the display unit 34, and notify the user of the abnormality. Alternatively, the notification unit 42 may output a sound indicating an abnormality from a speaker (not shown) to notify the user of the abnormality. Alternatively, the notification unit 42 may cause a light emitting unit (not shown) to emit light in a light emitting mode indicating an abnormality, and notify the user of the abnormality.

Fig. 5 shows a table stored in the storage unit 33. In the table, operation information indicating whether or not the peripheral 14 is permitted to operate is associated with each combination pattern of the opening/closing states that can be combined by the plurality of opening/closing detection sensors 24.

The purge opening G1 is irrelevant from the viewpoint of user safety for the peripheral device 14. Therefore, the purge opening G1 is not considered in the open-closed state of the opening in the table of fig. 5.

In an open/closed state in which the rear opening G3 and the sub-opening G4 are closed and the front opening G2 is opened, the peripheral device 14 is isolated from the outside (see the two-dot chain line of fig. 6). That is, user security for the peripheral 14 is ensured. In such an open/closed state of the opening, maintenance of the injection molding machine 12 can be performed. Therefore, the operation information corresponding to the opening/closing state in which the rear opening G3 and the sub-opening G4 are closed and the front opening G2 is opened indicates the allowable operation (see the second upper number in fig. 5).

In an open/closed state in which the front opening G2 and the sub-opening G4 are closed and the rear opening G3 is opened, the peripheral device 14 is isolated from the outside (refer to the two-dot chain line of fig. 2). That is, user security for the peripheral 14 is ensured. In such an open/closed state of the opening, a molded article take-out operation for taking out a molded article from the injection molding machine 12 can be performed. Therefore, the operation information corresponding to the opening-closing state in which the front opening G2 and the sub-opening G4 are closed and the rear opening G3 is opened indicates the allowable operation (see the third upper number of fig. 5).

Although not shown, the peripheral device 14 is isolated from the outside in an opening-open state in which the front opening G2, the rear opening G3, and the sub-opening G4 are closed. That is, user security for the peripheral 14 is ensured. Therefore, the operation information corresponding to the opening-closing states of the front opening G2, the rear opening G3, and the sub-opening G4 are closed indicates the allowable operation (refer to the first upper number of fig. 5).

Although not shown, the peripheral device 14 is not isolated from the outside in an opening-closing state in which the sub-opening G4 is opened. That is, user security for the peripheral 14 is not ensured. Therefore, the operation information corresponding to the opening-closing state in which the sub-opening G4 is opened indicates that the operation is not permitted (refer to the fourth from the top in fig. 5).

Next, a management method of the management device 30 will be described. Fig. 7 is a flowchart showing a flow of management processing of the management device 30. The management processing of the management device 30 is repeatedly executed at a predetermined cycle. In the flowchart of fig. 7, management processing performed in one cycle is shown.

In step S1, the acquisition unit 36 acquires the opening/closing states of the plurality of safety doors 22 based on the detection signals output from the respective opening/closing detection sensors 24. When the opening/closing states of the plurality of safety doors 22 are obtained, the management process advances to step S2.

In step S2, the determination unit 38 determines whether or not a combination pattern matching the opening/closing state acquired in step S1 exists in the table. Here, if there is no combination pattern in the table that matches the opening-closing state acquired in step S1, the management process proceeds to step S3. In contrast, if there is a combination pattern in the table that matches the opening-closing state acquired in step S1, the management process proceeds to step S4.

In step S3, the notification unit 42 notifies the user of the abnormality. When the abnormality is notified, the management processing ends.

In step S4, the determination unit 38 determines whether to stop the peripheral device 14 based on the operation information corresponding to the combination pattern matching the opening-closing state acquired in step S1. That is, when the operation information corresponding to the combination pattern matching the opening/closing state acquired in step S1 indicates the allowable operation, the determination unit 38 determines not to stop the peripheral device 14. In this case, the management processing ends. In contrast, when the operation information corresponding to the combination pattern matching the opening-closing state acquired in step S1 indicates that the operation is not permitted, the determination unit 38 determines to stop the peripheral device 14. In this case, the management process advances to step S5.

In step S5, the signal output unit 40 outputs a stop signal to the peripheral device 14, and stops the peripheral device 14 from performing a predetermined operation. In the present embodiment, the peripheral device 14 is a molded article takeout device, and the predetermined operation is a molded article takeout operation. When the stop signal is output to the peripheral device 14, the management processing ends.

As described above, in the present embodiment, the management device 30 determines whether to stop the peripheral 14 based on the table stored in the storage unit 33. In this table, operation information indicating whether or not the operation of the peripheral device 14 is permitted is associated with each combination mode of the opening-closing states that can be combined by the plurality of safety doors 22. The plurality of safety doors 22 include a safety door 22 that opens and closes an opening of a first cover 181 surrounding the mold clamping device 18, and a safety door 22 that opens and closes an opening of a second cover 182 surrounding the peripheral device 14. Therefore, the management apparatus 30 can stop the peripheral device 14 only when it is assumed that the user can access the peripheral device 14. As a result, user safety with respect to the peripheral 14 can be appropriately ensured while ensuring operability of the user.

The above-described embodiments may be modified as follows.

Modification 1

Fig. 8 shows an injection molding system 10 according to modification 1. In fig. 8, the same components as those described above are denoted by the same reference numerals. In this modification, the description repeated with the above description is omitted.

In the injection molding system 10 of modification 1, a molded article take-out device is used as the peripheral device 14. The peripheral device 14 is provided at a different installation site from the embodiment. That is, in the present modification, the peripheral device 14 is provided on the upper portion of the fixed platen of the mold clamping device 18. The peripheral device 14 (molded article take-out device) takes out the molded article from above the mold clamping device 18.

In the injection molding system 10 of modification 1, the safety cover 16 does not have the second cover 182. Therefore, there is no sub-opening G4. In the present modification, a safety door 22 for opening and closing the purge opening G1, a safety door 22 for opening and closing the front opening G2, and a safety door 22 for opening and closing the rear opening G3 are provided.

Fig. 9 shows a table of modification 1. The purge opening G1 is irrelevant from the viewpoint of user safety with respect to the peripheral device 14, as in the embodiment. Therefore, the purge opening G1 is not considered in the open-closed state of the opening in the table of fig. 9.

In an open/closed state in which the front opening G2 and the rear opening G3 are closed, the mold clamping device 18 accessed by the peripheral equipment 14 is isolated from the outside. That is, user security for the peripheral 14 is ensured. Therefore, the operation information corresponding to the opening-closing states of the front opening G2 and the rear opening G3 are closed indicates the allowable operation (refer to the first upper number of fig. 9).

In an open/close state in which at least one of the front opening G2 and the rear opening G3 is open, the mold clamping device 18 accessed by the peripheral equipment 14 is not isolated from the outside. That is, user security for the peripheral 14 is not ensured. Therefore, the operation information corresponding to the opening-closing state in which at least one of the front opening G2 and the rear opening G3 is opened indicates that the operation is not permitted (refer to the second to fourth in the upper number of fig. 9).

Using such a table, the management device 30 can determine whether to stop the peripheral 14 as in the embodiment. Thus, the management device 30 can stop the peripheral 14 only when it is assumed that the user can access the peripheral 14. As a result, user safety with respect to the peripheral 14 can be appropriately ensured while ensuring operability of the user.

Modification 2

Fig. 10 shows an injection molding system 10 according to modification 2. In fig. 10, the same components as those described above are denoted by the same reference numerals. In this modification, the description repeated with the above description is omitted.

In the injection molding system 10 of modification 2, the second injection molding machine 120 is provided separately from the injection molding machine 12. The type of the second injection molding machine 120 may be the same as or different from the type of the injection molding machine 12. However, the second injection molding machine 120 has a mold clamping device 18 and an injection device 20.

In the injection molding system 10 of modification 2, the safety cover 16 surrounds the injection molding machine 12, the second injection molding machine 120, and the peripheral device 14. In the present modification, the safety cover 16 includes a third cover 183 in addition to the first cover 181 and the second cover 182. The third cover 183 is a cover that separates the second injection molding machine 120 from the outside. An operation panel 230 is provided in the third cover 183. The third cover 183 has a front wall, a rear wall, a right wall, and a left wall with the operation panel 230 as a front surface.

The purge opening G10 and the front opening G20 are formed at intervals in the left-right direction in the front wall of the third cover 183. The purge opening G10 is provided in front of the injection device 20 in the second injection molding machine 120. The front opening G20 is provided in front of the mold clamping device 18 in the second injection molding machine 120. A rear opening G30 is formed in the rear wall of the third cover 183. The rear opening G30 is provided rearward of the mold clamping device 18 in the second injection molding machine 120.

The second cover 182 in modification 2 is disposed between the rear wall of the first cover 181 and the rear wall of the third cover 183. The second housing 182 has two sidewalls. The two side walls of the second cover 182 are connected to the rear wall of the first cover 181 and the rear wall of the third cover 183, respectively. The peripheral device 14 is disposed between the two side walls of the second cover 182.

In the above embodiment, the sub-opening G4 is formed in the rear wall of the second cover 182, but in the present modification, the second cover 182 has no rear wall, and the sub-opening G4 is formed in one of the two side walls of the second cover 182.

Fig. 11 shows a table of modification 2. From the viewpoint of user safety for the peripheral 14, the purge opening G1 and the purge opening G10 are not related to the same as the above embodiment. Therefore, in the open-closed state of the openings in the table of fig. 11, the purge opening G1 and the purge opening G10 are not considered.

Front opening_1 of fig. 11 corresponds to front opening G2 of fig. 10, and rear opening_1 of fig. 11 corresponds to rear opening G3 of fig. 10. In addition, the front opening_2 of fig. 11 corresponds to the front opening G20 of fig. 10, and the rear opening 2 of fig. 11 corresponds to the rear opening G30 of fig. 10.

In an open/closed state in which the front opening G2, the front opening G20, and the sub-opening G4 are closed, and the rear opening G3 and the rear opening G30 are opened, the peripheral device 14 is isolated from the outside (refer to the two-dot chain line of fig. 10). That is, user security for the peripheral 14 is ensured. In such an open/closed state of the opening, a molded article taking-out operation for taking out a molded article from the injection molding machine 12 and a molded article taking-out operation for taking out a molded article from the second injection molding machine 120 can be performed. Therefore, the operation information corresponding to the opening-closing states in which the front opening G2, the front opening G20, and the sub-opening G4 are closed, and the rear opening G3 and the rear opening G30 are opened indicates the allowable operation (refer to the first top of fig. 11).

In an open/closed state in which the front opening G2, the rear opening G30, and the sub-opening G4 are closed, the front opening G20 and the rear opening G3 are opened, the peripheral device 14 is isolated from the outside (refer to the two-dot chain line of fig. 12). That is, user security for the peripheral 14 is ensured. In such an open/closed state of the opening, maintenance of the second injection molding machine 120 can be performed. Therefore, the operation information corresponding to the opening-closing states in which the front opening G2, the rear opening G30, and the sub-opening G4 are closed, and in which the front opening G20 and the rear opening G3 are opened, indicates the allowable operation (see the third upper number of fig. 11).

Although not shown, the peripheral device 14 is isolated from the outside in an open/closed state in which the front opening G20, the rear opening G3, and the sub-opening G4 are closed and the front opening G2 and the rear opening G30 are opened. In such an open/closed state of the opening, maintenance of the injection molding machine 12 can be performed. Therefore, the operation information corresponding to the opening-closing states in which the front opening G20, the rear opening G3, and the sub-opening G4 are closed, and the front opening G2 and the rear opening G30 are opened, indicates the allowable operation (refer to the second upper number of fig. 11).

Although not shown, the peripheral device 14 is isolated from the outside in an open/closed state in which the rear opening G3, the rear opening G30, and the sub-opening G4 are closed and the front opening G2 and the front opening G20 are opened. In such an open/closed state, maintenance of both the injection molding machine 12 and the second injection molding machine 120 can be performed. Therefore, the operation information corresponding to the opening-closing states in which the rear opening G3, the rear opening G30, and the sub-opening G4 are closed, and the front opening G2 and the front opening G20 are opened indicates the allowable operation (refer to the fourth from the top in fig. 11).

Although not shown, the peripheral device 14 is isolated from the outside in an opening-open state in which the front opening G2, the rear opening G3, the front opening G20, the rear opening G30, and the sub-opening G4 are closed. Accordingly, the operation information corresponding to the opening-closing states of the front opening G2, the rear opening G3, the front opening G20, the rear opening G30, and the sub-opening G4 being closed indicates the allowable operation (refer to the fifth from the top in fig. 11).

In the case other than the above-described five opening-open states, the peripheral device 14 is not isolated from the outside. That is, user security for the peripheral 14 is not ensured. Therefore, the operation information corresponding to the opening-closing states other than the five opening-closing states indicates that the operation is not permitted (see sixth to eighth in the upper numbers of fig. 11).

Using such a table, the management device 30 can determine whether to stop the peripheral 14, as in the above embodiment. Thus, the management device 30 can stop the peripheral 14 only when it is assumed that the user can access the peripheral 14. As a result, user safety with respect to the peripheral 14 can be appropriately ensured while ensuring operability of the user.

Modification 3

In the storage section 33, tables may be stored for each system in which the setting positions or the number of the safety gates 22 are different. For example, the table of the injection molding system 10 of the embodiment (fig. 5), the table of the injection molding system 10 of modification 1 (fig. 9), and the table of the injection molding system 10 of modification 2 (fig. 11) can be stored in the storage unit 33. In this way, even if the type, arrangement, and the like of the peripheral 14 are changed, the user security for the peripheral 14 can be appropriately ensured.

Modification 4

In the case where a table is stored for each system, the user can be allowed to select the current system from a plurality of systems. Fig. 13 is a block diagram showing a modification of the structure of management device 30. In fig. 13, the same components as those described above are denoted by the same reference numerals. In this modification, the description repeated with the above description is omitted.

The management device 30 is newly provided with a display control unit 44. The display control unit 44 causes the display unit 34 to display a selection screen for selecting a current system from among the plurality of systems.

Fig. 14 shows an example of a selection screen. Icons CN1 to CN4 are displayed on the selection screen, and the icons CN1 to CN4 indicate the system format corresponding to the table stored in the storage unit 33. In the example shown in fig. 14, an icon CN1 represents the mode of the injection molding system 10 of the above embodiment. The icons CN2 and CN3 show the mode of the injection molding system 10 of modification 1. The icon CN4 represents the mode of the injection molding system 10 of modification 2.

The safety cover 16, the safety door 22, the peripheral device 14, and the safety barrier of the peripheral device 14 are displayed on the icons CN1 to CN4, respectively. Thus, the user can select the icon CN3 or the like corresponding to the current system using the input unit 35 while grasping the system format corresponding to the table stored in the storage unit 33 in detail. The security barrier of the peripheral device 14 is an outer frame portion of a range where the user cannot access the peripheral device 14, and is constituted by a portion of the security cover 16 and the security door 22 closing the opening.

When the icon CN3 is selected, for example, in response to a user operation, the determination unit 38 determines whether to stop the peripheral 14 based on a table corresponding to the system indicated by the selected icon CN 3. This can reduce the load required for determination as compared with the case where all tables stored for each system are referred to.

Modification 5

The notification section 42 may not be provided. If the notification unit 42 is not provided, step S3 (see fig. 7) of the management process is not executed. Even when the notification portion 42 is not provided, the same effects as those of the above-described embodiment can be obtained.

Modification 6

Instead of the control device 26 of the injection molding machine 12, the management device 30 may be provided in the control device 28 of the peripheral 14. Even if the management device 30 is provided in the control device 28 of the peripheral 14, the same effects as those of the above-described embodiment can be obtained. In this case, the opening/closing detection sensor 24 may be connected to the peripheral device 14, or the peripheral device 14 may be notified of the result of the detection of the opening/closing by itself by the injection molding machine 12.

Modification 7

The peripheral device 14 may be provided in plural. Even if a plurality of peripheral devices 14 are provided, the same effects as those of the above-described embodiment can be obtained.

Modification 8

In the case where the peripheral 14 can access the injection device 20 of the injection molding machine 12, the purge opening G1 may be added to the table. The table is the table of the embodiment (fig. 5), the table of modification 1 (fig. 9), or the table of modification 2 (fig. 11). According to this modification, the safety monitoring range can be widened. That is, the same effects as those of the above embodiment can be obtained with respect to the range of the danger of the peripheral 14.

Modification 9

As a monitoring means for monitoring a dangerous state caused by accessing the peripheral device 14, an area sensor may be employed instead of the open/close detection sensor 24. The area sensor detects the presence or absence of a person within a predetermined area. In this case, the acquisition unit 36 acquires the presence or absence of a person in each area based on the detection signals output from the plurality of area sensors. In the table, operation information indicating whether or not the operation of the peripheral 14 is permitted is associated with each combination pattern of the presence or absence of a person for a plurality of areas. In this way, the determination unit 38 can determine whether to stop the peripheral device 14 based on the status of the presence or absence of the person in each area acquired by the acquisition unit 36 and the table.

Modification 10

There may be no plurality of safety gates 22. In this case, as a monitoring device for monitoring a dangerous state caused by accessing the peripheral device 14, an opening sensor is provided instead of the opening/closing detection sensor 24. The opening sensor detects whether or not access to the opening is made based on a result of reception of the laser light irradiated from the laser light irradiation section. The acquisition unit 36 acquires the state of whether or not access to each opening is provided based on the detection signals output from the plurality of opening sensors. In the table, operation information indicating whether or not the operation of the peripheral 14 is permitted is associated with each combination pattern of whether or not access to the plurality of openings is permitted. In this way, the determination unit 38 can determine whether to stop the peripheral device 14 based on the state of whether or not access to each opening is available and the table acquired by the acquisition unit 36.

Modification 11

As a monitoring means for monitoring a dangerous state caused by accessing the peripheral device 14, at least two of the above-described opening/closing detection sensor 24, area sensor, and opening sensor may be combined. The monitoring device may be a sensor other than the opening/closing detection sensor 24, the area sensor, and the opening sensor. In this case, the acquisition unit 36 acquires the monitoring states detected by the plurality of monitoring devices. In the table, operation information indicating whether or not the operation of the peripheral 14 is permitted is associated with each combination mode of the monitoring states that can be combined by the plurality of monitoring devices. In this way, the determination unit 38 can determine whether to stop the peripheral 14 based on the respective monitoring states and tables acquired by the acquisition unit 36.

Modification 12

The above-described modifications may be arbitrarily combined within a range where no contradiction occurs.

(invention)

The following describes an invention that can be grasped from the embodiments.

The present invention is a management device (30) for managing a plurality of monitoring devices for monitoring a dangerous state caused by access to a peripheral device (14) capable of accessing an injection molding machine (12), the management device comprising: an acquisition unit (36) that acquires the monitoring states detected by the plurality of monitoring devices, respectively; a storage unit (33) that stores a table associating operation information indicating whether or not to permit operation of the peripheral device with each combination mode of the monitoring states that can be combined by a plurality of the monitoring devices; a determination unit (38) that determines whether to stop the peripheral device based on the respective monitoring states and the table acquired by the acquisition unit; and a signal output unit (40) that outputs a stop signal to the peripheral device when it is determined to stop the peripheral device.

As a result, the peripheral device can be stopped only when it is assumed that the user can access the peripheral device, and as a result, user safety with respect to the peripheral device can be appropriately ensured while ensuring operability of the user.

The acquisition unit may acquire the opening/closing states of the plurality of safety doors detected by opening/closing detection sensors (24) provided in correspondence with the plurality of safety doors (22), the table may store operation information indicating whether or not to permit operation of the peripheral device in association with each combination pattern of the opening/closing states of the plurality of opening/closing detection sensors, and the determination unit may determine whether or not to stop the peripheral device based on the opening/closing states acquired by the acquisition unit and the table. This makes it possible to stop the peripheral device only when it is assumed that the user can access the peripheral device through the opening.

The table may be stored in the storage unit for each system in which the setting positions or the number of the monitoring devices are different. Thus, even if the type, arrangement, and the like of the peripheral device are changed, user security with respect to the peripheral device can be appropriately ensured.

The management device may be provided with a display control unit (44) that causes a display device to display a selection screen for selecting a current system from among the plurality of systems, and the determination unit may determine whether to stop the peripheral device based on the table corresponding to the selected system. This can reduce the load required for determination as compared with the case where all tables stored for each system are referred to.

The determination unit may be configured to search for the combination pattern matching the monitored state, and determine to stop the peripheral device when the operation information corresponding to the combination pattern matching the monitored state indicates that the operation is not permitted. Thus, the peripheral device can be stopped only when the operation information corresponding to the combination mode indicates that the operation is not permitted.

The management device may be provided with a notification unit (42) for notifying the user of an abnormality when the combination mode is not matched with the monitoring state. This can provide an opportunity for inspection and the like.

The peripheral device may include at least one of a molded article removing device, a mold mounting device, a mold replacing device, and an injection device that injects a molding material toward a mold clamping device (18) in the injection molding machine from a direction intersecting a mold closing direction and a mold opening direction of the mold clamping device. This can appropriately ensure user safety for the molded article removing device, the mold mounting device, the mold replacing device, or the injection device.

The control device (26) of the injection molding machine may be provided with the management device. Thus, even if the control device other than the control device of the injection molding machine is not provided with the management device, the peripheral device can be stopped only when it is assumed that the user can access the peripheral device.

The control device (28) of the peripheral equipment may be provided with the management device. Thus, even if the control device of the injection molding machine does not include the management device, the peripheral device can be stopped only if it is assumed that the user can access the peripheral device.

Description of the reference numerals

10 injection molding system

12 injection molding machine

14 peripheral equipment

16 safety cover

18 mould closing device

20 injection device

22 safety door

24 open-close detection sensor

26. 28 control device

30 management device

32 signal processing unit

33 storage part

34 display unit

35 input part

36 acquisition unit

38 determination unit

40 signal output unit

42 notification part

44 shows a control section.

Claims (9)

1. A management device (30) manages a plurality of monitoring devices for monitoring a dangerous state caused by access to peripheral equipment (14) capable of accessing an injection molding machine (12),

it is characterized in that the method comprises the steps of,

the management device is provided with:

an acquisition unit (36) that acquires the monitoring states detected by the plurality of monitoring devices, respectively;

a storage unit (33) that stores a table associating operation information indicating whether or not to permit operation of the peripheral device with each combination mode of the monitoring states that can be combined by a plurality of the monitoring devices;

a determination unit (38) that determines whether to stop the peripheral device based on the respective monitoring states and the table acquired by the acquisition unit; and

and a signal output unit (40) that outputs a stop signal to the peripheral device when it is determined to stop the peripheral device.

2. The device according to claim 1, wherein,

the acquisition unit acquires the opening/closing states of a plurality of safety doors detected by opening/closing detection sensors (24) provided in correspondence with the plurality of safety doors (22),

in the table, operation information indicating whether or not the operation of the peripheral device is permitted is associated with each combination pattern of the opening-closing state that can be combined by a plurality of the opening-closing detection sensors,

the determination unit determines whether to stop the peripheral device based on the opening-closing state acquired by the acquisition unit and the table.

3. The management device according to claim 1 or 2, wherein,

in the storage section, the table is stored for each system in which the setting positions or the number of the monitoring devices are different.

4. A management device according to claim 3, wherein,

the management device is provided with a display control unit (44) which causes a display device to display a selection screen for selecting a current system from a plurality of systems,

the determination unit determines whether to stop the peripheral device based on the table corresponding to the selected system.

5. The device according to any one of claim 1 to 4, wherein,

the determination unit searches for the combination pattern matching the monitoring state, and determines to stop the peripheral device when the operation information corresponding to the combination pattern matching the monitoring state indicates that the operation is not permitted.

6. The management device according to any one of claims 1 to 5, wherein,

the management device is provided with a notification unit (42) which notifies the user of an abnormality when the combination mode that matches the monitoring state is not available.

7. The management device according to any one of claims 1 to 6, wherein,

the peripheral equipment comprises at least one of a molded article taking-out device, a mold mounting device, a mold replacing device and an injection device for injecting molding materials towards a mold clamping device (18) in the injection molding machine from a direction crossing the mold closing direction and the mold opening direction of the mold clamping device.

8. The management device according to any one of claims 1 to 7, wherein,

the control device (26) of the injection molding machine is provided with the management device.

9. The management device according to any one of claims 1 to 7, wherein,

the control device (28) of the peripheral equipment is provided with the management device.