JP3701893B2 - Unloader connection device for molding machine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an ejector connecting device for a molding machine for connecting an unloader for taking out a molded product to the molding machine.
[0002]
[Prior art]
2. Description of the Related Art Conventionally, an injection molding machine including a take-out machine (take-out robot) that can automatically take out a molded product is known, for example, in Japanese Patent Application Laid-Open No. 11-58466.
[0003]
By the way, since this kind of take-out machine is usually positioned as an optional unit of an injection molding machine, it is often retrofitted. FIG. 7 shows an injection molding machine 50 with a take-out machine 60 attached later. The unloader 60 includes a chuck portion 61 for gripping or releasing the molded product. The chuck portion 61 can be moved in the X direction, the Y direction, and the Z direction by the arm mechanism portion 62 and swivels around the attachment base 63 as a fulcrum. it can. The take-out machine 60 is attached to the upper surface of the housing 52u provided in the vicinity of the mold 51 provided in the injection molding machine 50, specifically, in the vicinity of the stationary platen that supports the stationary mold by the attachment base 63. The unloader controller unit 64 included in the unloader 60 includes an operation pendant 66 connected via a pendant cable 65, and a connection cable 67 led out from the unloader controller unit 64 via an unloader connection device 53. And connected to a molding machine controller unit built in the injection molding machine 50. In this case, the unloader connection device 53 includes a connector portion 54 attached to the housing 52f located in front of the injection molding machine 50, and can be connected by inserting a plug portion 67p at the tip of the connection cable 67 into the connector portion 54. .
[0004]
Thereby, since the operation timing of the take-out machine 60 and the injection molding machine 50 is interlocked, the operation of the take-out machine 60 is interlocked with the operation of the injection molding machine 50, and the molded product is automatically taken out. When the connection cable 67 is not connected to the connector portion 54, the dummy plug 55 is connected to the connector portion 54. Thereby, a circuit for releasing the interlock is configured on the injection molding machine 50 side.
[0005]
On the other hand, when the molded product is manually taken out, since the take-out machine 60 is not used, the interlock can be released by operating the take-off machine OFF switch provided in the operation pendant 66. Further, when the unloader 60 is not used for a long period of time or when the unloader 60 breaks down, the connection cable 67 is removed from the connector portion 54 in consideration of safety and energy saving, and the dummy plug 55 is connected. .
[0006]
[Problems to be solved by the invention]
However, the conventional unloader connection device 53 provided in the above-described injection molding machine 50 has the following problems.
[0007]
First, since power is supplied to the unloader 60 from the injection molding machine 50 side, when the connection cable 67 is connected to the connector portion 54, the unloader controller is used even when the unloader 60 is not used. Power supply for functioning the unit 64 is necessary, which involves unnecessary power consumption. On the other hand, the connection cable 67 may be removed from the connector portion 54, but each time a troublesome detaching operation is forced.
[0008]
Secondly, since the connector cable 54, the connecting cable 67 with the plug part 67p, and the dummy plug 55 are required, the number of parts increases, which is disadvantageous in terms of cost, and on the outer surface of the injection molding machine 50. Protruding parts will be present, and the appearance (commercial property) will be impaired.
[0009]
The present invention solves such problems existing in the prior art, eliminates unnecessary power consumption and troublesome attachment / detachment work, and eliminates protrusions on the outer surface to improve appearance (commercial properties). Furthermore, it is an object of the present invention to provide an ejector connecting device for a molding machine that can reduce the cost by reducing the number of parts.
[0010]
[Means for Solving the Problems and Embodiments]
In the present invention, when configuring the take-out machine connecting device 1 of the molding machine for connecting the take-out machine R for taking out a molded product to the molding machine M, the terminal block 13 is built in the molding machine M. The connection cable C derived from the unloader R is connected, and the feed line 2p is opened and closed to the feed line 2p that feeds power to the unloader R from the molding machine M of the connection line connecting the unloader R and the molding machine M. When one switch part 3 is connected and the first switch part 3 is switched to the open side to one or two or more interlocking signal lines 2a, 2c ... of the connection line, between the molding machine M and the unloader R The second switch unit 4 for releasing the interlock is connected.
[0011]
In this case, according to a preferred embodiment, the first switch unit 3 is provided in the molding machine M, and the open / close switch 11 operated by manual operation can be used, and the second switch unit 4 is connected to the molding machine M. It is possible to use relays 12a, 12c... That are built in and connected to the interlock signal lines 2a.
[0012]
As a result, if the connection cable C led out from the unloader R is connected to the terminal block 13 built in the molding machine M, and the first switch unit 3 is switched to the closed side, the connection cable C is unloaded from the molding machine M via the feed line 2p. The power is supplied to the machine R, and the relays 12a, 12c,... Are excited based on this power supply, and the molding machine M and the unloader R are connected by an interlock circuit. On the other hand, if the first switch part 3 is switched to the open side with the connection cable C connected to the terminal block 13, the power supply to the unloader R is cut off and the excitation to the relays 12a, 12c. . As a result, the circuit is switched to a circuit in which the interlock between the molding machine M and the unloader R is released.
[0013]
【Example】
Next, preferred embodiments according to the present invention will be given and described in detail with reference to the drawings.
[0014]
First, the configuration of an injection molding machine including the take-out machine connecting device 1 according to the present embodiment and a take-out machine retrofitted to the injection molding machine will be described with reference to FIGS. 2 and 3.
[0015]
FIG. 2 shows an external configuration of an injection molding machine M including a take-out machine R attached later. The injection molding machine M includes a machine base 20, and includes an injection device Mi having a hopper 21 and a heating cylinder 22 on one side of the upper surface of the machine base 20, and a mold clamping that supports a mold 23 on the other side. A device Mc is provided. Opening and closing type safety doors 24 are provided on both sides of the mold 23, and a housing 25 is provided in the vicinity of a stationary plate that supports the stationary mold of the mold 23, and a front panel portion 25 f of the housing 25 is provided. The operation unit 26 is attached. In this case, the operation unit 26 includes a display and a keyboard.
[0016]
On the other hand, the unloader R includes an attachment base 30, and supports one end side of the arm mechanism 31 on the top of the attachment base 30. As a result, the arm mechanism 31 turns around the attachment base 30 as a fulcrum. Moreover, the arm mechanism part 31 supports the chuck | zipper part 32 which grips or cancels | releases a molded article. Thereby, the chuck part 32 is moved in the X direction, the Y direction and the Z direction by the arm mechanism part 31. The attachment base 30 is attached and fixed to the upper panel portion 25u of the housing 25. Furthermore, an unloader controller unit 33 in the mounting machine R is disposed at the upper end of the mounting base 30. A pendant cable 34 is led out from the unloader controller unit 33, and an operation pendant 35 for manually operating the unloader R is connected to the tip of the pendant cable 34. As shown in FIG. 3, the operation pendant 35 includes a display 35 d and a keyboard 35 k.
[0017]
A connection cable C connected to the injection molding machine M is led out from the take-out machine controller unit 33. In this case, there is no conventional plug portion at the tip of the connection cable C. Therefore, when the plug portion is connected depending on the manufacturer or model, it is sufficient to use only the cable by cutting or the like. The leading end side of the connection cable C is guided to the inside of the machine base 20 through, for example, a hole 27 provided in the upper panel portion 25u, and is connected to the unloader according to the present embodiment disposed inside the machine base 20. 1 to the molding machine controller unit 28 (see FIG. 3).
[0018]
FIG. 3 shows a block system of a control system for the injection molding machine M and the unloader R. In the figure, 28 is a molding machine controller unit provided in the base 20 of the injection molding machine M. The molding machine controller unit 28 includes a molding machine controller main body 40, a human machine interface (HMI) 41, and a molding machine memory 42, which function as a computer processing unit. The HMI 41 is connected to the operation unit 26 attached to the front panel unit 25f. In this case, the molding machine controller main body 40 mainly functions as a programmable logic controller (PLC) that performs sequence control, and includes a CPU, a communication interface, a power supply unit 5 (see FIG. 1), and the like.
[0019]
On the other hand, the unloader controller unit 33 of the unloader R includes an unloader controller main body 45 and an unloader memory 46, which function as a computer processing unit. Further, the pendant cable 34 of the operation pendant 35 described above is connected to the unloader controller main body 45 via a connector 47. Then, the connection cable C led out from the take-out machine controller unit 33 is connected to the molding machine controller unit 28 via the take-out machine connection device 1 according to this embodiment provided in the injection molding machine M. In this case, the connection cable C includes a main connection line Lm that connects the unloader controller main body 45 and the molding machine controller main body 40, and an auxiliary line Ls that connects the connector 47 and the HMI 41.
[0020]
Next, the configuration of the unloader connection device 1 according to the present embodiment will be described with reference to FIGS.
[0021]
The unloader connection device 1 includes a terminal block 13 disposed inside the machine base 20, and the terminal block 13 includes a plurality of terminals 13 p... 13 a, 13 a, 13 b, 13 c, 13 d. , 13x. Then, each line of the connection cable C is connected to the corresponding terminals 13p... 13a, 13b, 13c, 13d. On the other hand, 2p is a power supply line that supplies power from the molding machine M to the take-out machine R, and connects between the power supply unit 5 built in the injection molding machine M and the terminals 13p, and this power supply is in the middle of the power supply line 2p. The first switch unit 3 that opens and closes the line 2p is connected. The first switch unit 3 uses the open / close switch 11 and can be disposed on the front panel unit 25f, for example, as shown in FIG. Thereby, the operator can open and close the open / close switch 11 by manual operation. The power supply line 2p is shown as a single line in the drawing, but is usually three or two.
[0022]
2a, 2b, 2c, 2d... Are interlocking signal lines that connect the corresponding input / output ports of the molding machine controller main body 40 and the HMI 41 to the terminals 13a, 13b, 13c, 13d. In the middle of the lock signal lines 2a, 2c, relays 12a, 12c,... For releasing the interlock between the molding machine M and the unloader R when the first switch unit 3 is switched to the open side are connected. These relays 12 a, 12 c... Constitute the second switch unit 4. Interlock signal lines 2a (2b), 2c (2d)... Are shown only in the two systems in the drawing, but normally, as shown in FIG. 4, "clamping interlock line", "die opening interlock" There are four or more lines of interlock signal lines 2a... Such as “use line”, “cycle start line”, “ejector advance start line”, “other interlock line”. The non-interlock signal lines 2x... That are not related to the interlock are directly connected to corresponding input / output ports in the molding machine controller main body 40 and the HMI 41 without passing through a relay (second switch unit 4).
[0023]
Next, the function of the unloader connection device 1 configured as described above will be described with reference to FIGS.
[0024]
First, when the first switch unit 3 (open / close switch 11) is switched to the closed (ON) side, the power supply line 2p is connected, so that the power supply unit 2 of the injection molding machine M is connected to the power supply line 2p, the terminal 13p, Electric power is supplied to the unloader R via the connection cable C. Further, the relays 12a, 12c... Are excited based on this power supply, the switch portions of the relays 12a, 12c... Are opened, that is, the interlock signal lines 2a, 2c. Connected by an interlock circuit.
[0025]
On the other hand, if the first switch part 3 is switched to the open (OFF) side, the power supply line 2p is cut off, so that power supply to the unloader R is stopped and excitation to the relays 12a, 12c. . As a result, the switch sections of the relays 12a, 12c,... Are closed, that is, the interlock signal lines 2a, 2c,... Are closed, and the circuit is switched to a circuit in which the interlock between the molding machine M and the unloader R is released. The relationship between the open / closed (ON-OFF) state of the first switch section 3 and the open / closed states of the interlock signal lines 2a, 2c... Is as shown in FIG.
[0026]
Therefore, when such an unloader connecting device 1 is used, the feeding or unloading of the unloading machine R can be switched by the operation of the first switch unit 3, and the injection molding machine M and the unloading machine R are interlocked with this operation. Since it is possible to perform the interlock or release thereof, unnecessary power consumption can be eliminated. In addition, since a connector cable, a connection cable with a plug part, a dummy plug, and the like are not required, troublesome mounting and dismounting operations can be eliminated, and the cost can be reduced by reducing the number of parts. In addition, since no protrusions are present on the outer surface of the injection molding machine M, it is possible to contribute to an improvement in appearance (commercial properties).
[0027]
On the other hand, the following setting process and data process can be performed by the connection configuration of the molding machine controller unit 28 and the unloader controller unit 33 described above. Hereinafter, the processing method will be described according to the flowchart shown in FIG.
[0028]
First, using the operation unit 26 of the injection molding machine M, the molding conditions of the injection molding machine M and the extraction conditions of the take-out machine R are set (step S1). In this case, since the HMI 41 and the unloader controller main body 45 are connected by the auxiliary line Ls, the HMI 41 can access not only the molding machine controller main body 40 but also the unloader controller main body 45. Therefore, both the molding conditions of the injection molding machine M and the extraction conditions of the take-out machine R can be set (changed, added, deleted) using the operation unit 26 of the injection molding machine M. Since the molding conditions of the injection molding machine M and the take-out conditions of the take-out machine R are closely related to each other, the adjustment of the conditions between the molding conditions and the take-out conditions can be realized by such setting of both conditions by the operation unit 26. Can be performed easily and quickly, and setting errors can be eliminated.
[0029]
When the setting by the operation unit 26 is completed, auxiliary setting for the unloader R is performed using the operation pendant 35 (steps S2 and S3). In this case, the auxiliary setting is mainly a correction change (fine adjustment) of the teaching (teaching) content for the unloader R. As described above, the setting process of both the molding condition and the removal condition by the operation unit 26 is realized, thereby facilitating and speeding up the setting work. However, on the other hand, the process related to the setting is performed on the unloader R side ( If the operation pendant 35) cannot be used at all, it will be extremely inconvenient in the correction change work in which fine adjustment is performed while confirming (observing) the operation of the unloader R from an appropriate position and angle. Therefore, the modification of the teaching content shown in FIG. As a result, the operator sets each of the molding conditions and take-out conditions (teaching contents) using the operation unit 26, and then holds the operation pendant 35 by hand and confirms the operation of the unloader R from an appropriate position and angle (observation). However, the correction change (fine adjustment) related to the position, speed, and timer shown in FIG. 5 can be performed more easily and with high accuracy.
[0030]
When the correction change (auxiliary setting) processing is completed, the extraction condition data that has been set and corrected is registered in the extraction machine memory 46 based on the original control in the extraction machine controller unit 33 (steps S4 and S5). Thereby, at the time of molding, the unloader R is driven and controlled based on the unloading condition data. Further, a data transfer command is output from the molding machine controller unit 28, and based on this transfer command, take-out condition data is transferred from the take-out machine R to the molding machine controller main body 40 (step S6). As a result, the molding machine controller main body 40 registers the preset molding condition data with the corresponding extraction condition data in the molding machine memory 42. That is, registration is performed by setting the molding condition data and the extraction condition data as a set. By such a processing method (registration method), problems associated with registering the molding condition data in the molding machine memory 42 and the extraction condition data in the extraction machine memory 46, for example, each time when data is reused. The troublesomeness of searching for data or performing processing such as change processing separately, as well as the reduction in work efficiency and processing errors associated with these are eliminated (step S7).
[0031]
The embodiment has been described in detail above, but the present invention is not limited to such an embodiment, and the gist of the present invention is described in detail configuration, shape, circuit configuration, exemplary items, quantity, technique, and the like. Any change, addition, or deletion can be made without departing from the scope. For example, the molding machine M and the unloader R are not limited to the examples, and can be applied to any type of molding machine and unloader that can obtain the same effect. Moreover, although the case where the 1st switch part 3 and the 2nd switch part 4 were arrange | positioned at the molding machine M side was shown, you may arrange | position at the take-out machine R side. Therefore, the connection line is basically a concept including the connection cable C.
[0032]
【The invention's effect】
As described above, the unloader connecting device of the molding machine according to the present invention has a terminal block built in the molding machine, and a connection cable derived from the unloader is connected to the terminal block, and the unloader and the molding machine are connected. A first switch unit for opening and closing the power supply line is connected to a power supply line for supplying power from the molding machine of the connection line to the unloader, and the first switch unit is connected to one or more interlocking signal lines of the connection line Since the second switch portion for releasing the interlock between the molding machine and the take-out machine is connected when the is switched to the open side, the following remarkable effects are obtained.
[0033]
(1) Power supply to or removal from the take-out machine can be switched by operating the first switch, and interlocking with this can interlock or release the injection molding machine and take-out machine. Power consumption can be eliminated.
[0034]
(2) Since a connector part, a connection cable with a plug part, a dummy plug, and the like are not required, troublesome attaching / detaching work can be eliminated, and the cost can be reduced by reducing the number of parts.
[0035]
(3) Since no protrusion exists on the outer surface of the injection molding machine, it is possible to contribute to improvement in appearance (commercial properties).
[Brief description of the drawings]
FIG. 1 is an electrical circuit diagram of an unloader connection device according to a preferred embodiment of the present invention;
FIG. 2 is an external perspective view of an injection molding machine equipped with the same take-out machine connecting device.
FIG. 3 is a block system diagram of a control system of the injection molding machine and a take-out machine retrofitted to the injection molding machine;
FIG. 4 is a table showing the relationship between the open / close state of the first switch unit and the open / close state of the interlock signal line in the unloader connection device;
FIG. 5 is a table showing items for correcting and changing the teaching contents of the unloader;
FIG. 6 is a flowchart for explaining another processing method in the injection molding machine and the take-out machine;
FIG. 7 is an external perspective view of an injection molding machine equipped with a take-out machine connecting device according to the prior art.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Unloader connection apparatus 2p Feeding line 2a ... Interlock signal line 3 1st switch part 4 2nd switch part 11 Open / close switch 12a ... Relay 13 Terminal block M Injection molding machine (molding machine)
R Unloader C Connection cable

Claims (3)

  In a take-out machine connecting device for a molding machine for connecting a take-out machine for taking out a molded product to the molding machine, a terminal block is built in the molding machine, and a connection cable led out from the take-out machine is connected to the terminal block. A first switch portion for opening and closing the power supply line is connected to a power supply line for supplying power from the molding machine to the extraction machine in a connection line connecting the unloader and the molding machine, and one or two of the connection lines A molding machine characterized in that a second switch part for releasing an interlock between the molding machine and the take-out machine when the first switch part is switched to the open side is connected to the interlock signal line. Unloader connection device.   The unloader connection device for a molding machine according to claim 1, wherein the first switch portion is an open / close switch that is provided in the molding machine and is operated by a manual operation.   The unloader connection device for a molding machine according to claim 1, wherein the second switch unit is a relay built in the molding machine and connected to the interlock signal line.

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