JP2008000791A - Wiring connector for forming apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To attain the automation of die changing by dispensing with the cutting of wiring and connecting work which is previously performed. <P>SOLUTION: This connector is provided with: a pair of feed bars 22a, 22b which have a plurality of clamping pawls 26a, 26b for holding a workpiece and with which the workpiece is continuously transported along a first to a forth forging die 12a-12d; detecting sensors 28 for detecting that the workpiece is clamped with clamping pawls 26a, 26b; a transmitting part 38 which is arranged on end part of the feed bar 22a and clamped signals from the detecting sensors 28 are fed and an output part 44 which is arranged in the noncontact state to a feed bar attaching and detaching part 30 of a transfer mechanism 24 which is provided on the side of the apparatus main part and with which a power source signal from an external power source is fed. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a wiring connector for a molding apparatus that can be applied to various molding apparatuses such as press molding, forging molding, casting molding, and die casting molding in which a mold member is provided so as to be exchangeable with another mold member.

  Conventionally, various molds, for example, molds (upper mold and lower mold) in a press molding apparatus have been replaced with other molds. This mold exchanging operation is performed by exchanging a die set, a mold, a jig, and the like that are detachably attached to the fixed base member. Conventionally, this mold exchanging operation is performed manually. I spent a lot of time.

  In order to overcome such a problem of mold exchanging work, for example, Patent Documents 1 to 6 include an exchanging apparatus that automatically performs exchanging work of mold members (molds and pallets) without human intervention. It is disclosed.

JP-A-2-24108 JP 2003-181586 A Japanese Utility Model Publication No. 8-1555 JP 2004-122206 A JP-A-6-328164 JP 2002-137136 A

  However, in the exchange apparatus such as the mold disclosed in Patent Documents 1 to 6, for example, a sensor for detecting whether or not the workpiece supplied into the apparatus has been securely clamped or a temperature for detecting the temperature of the mold. After the power supply wiring and the detection signal wiring to the detection sensor such as a sensor are cut manually, the power supply wiring and the detection signal are newly transferred between the other mold and the detection sensor. The work which electrically connects the wiring for work is needed.

  Such manual cutting and connecting work of wiring is required to perform cutting and connecting work of the wiring each time when a small amount and a wide variety of production are required by the molding apparatus, and the work of exchanging molds and the like increases. For this reason, a lot of loss time occurs, and it has become a bottleneck for achieving automation of mold replacement.

  The present invention has been made in view of the above points, and provides a wiring connector for a molding apparatus capable of achieving automation of mold replacement without requiring wiring cutting / connecting work conventionally performed. The purpose is to do.

In order to achieve the above object, the present invention is a wiring connector configured by a plurality of mold members and incorporated in a molding apparatus in which the mold members are exchangeable with other mold members,
A detection sensor provided on the mold member;
A transmission unit to which a detection signal from the detection sensor is sent; and
An output unit that is disposed in a non-contact state spaced apart from the transmission unit by a predetermined distance, and that is supplied with a power signal from an external power source;
With
The transmission unit is disposed on the mold member side to be replaced with the other mold member, and the output unit is disposed on the apparatus main body side excluding the plurality of mold members, and the transmission unit and the output unit The detection signal and the power signal are transmitted to each other. The detection sensor may be constituted by, for example, a sensor that detects whether or not the workpiece is clamped.

Furthermore, the present invention is provided interchangeably with other molding dies, and a plurality of molding dies for continuously processing and molding a workpiece,
A conveying means having a set of feed bars provided with a plurality of clamp claws for holding the workpiece, and continuously conveying the workpiece along the plurality of molding dies;
A detection sensor for detecting that the workpiece is gripped by the clamp pawl;
A transmission unit to which a clamp detection signal is sent from the detection sensor;
An output unit that is disposed in a non-contact state spaced apart from the transmission unit by a predetermined distance, and that is supplied with a power signal from an external power source;
With
The transmission section is disposed on the feed bar that is integrally carried out of the apparatus main body with the plurality of molding dies, and the output section is provided on a feed bar attaching / detaching section of a transfer mechanism provided on the apparatus main body side. The clamp detection signal and the power signal are transmitted to each other between the transmission unit and the output unit.

  In this case, the transmission unit and the output unit are provided with heat shield plates, respectively, so that the transmission unit and the output unit are suitably shielded and protected from heat generated when forming the workpiece. Is done. The heat shield is provided only on the side facing the workpiece, and the other side except for the side facing the workpiece is opened to prevent heat from being accumulated inside. It is preferable.

  According to the present invention, for example, when exchanging a mold member with another mold member, the transmission unit is disposed on the exchangeable mold member side, while the apparatus main body side excluding the exchanged mold member Since the output section is disposed in the apparatus body, the transmission section is carried out of the apparatus body integrally with the mold member, and another mold member having another transmission section is carried into the apparatus body and provided on the apparatus body side. An electrical signal is transmitted between the output unit and another transmission unit.

  As described above, in the present invention, the transmission unit is disposed on the mold member to be replaced, and the output unit is disposed on the apparatus main body side excluding the mold member to be replaced. The connection work of the electrical wiring becomes unnecessary, and the mold member can be automatically replaced.

  Further, according to the present invention, the transmission section is disposed on a feed bar that is integrally carried out of the apparatus main body with a plurality of molding dies, and the output section is fed by a transfer mechanism provided on the apparatus main body side. The clamp detection signal and the power supply signal are mutually transmitted between the transmission unit and the output unit, and the feed bar is detached from the feed bar attachment / detachment unit and the feed bar attachment / detachment unit and the feed. The mold member can be automatically exchanged by connecting to the bar.

  Automation of the replacement of the mold member can be achieved without the need for wiring cutting / connecting work that has been performed conventionally.

  A preferred embodiment of a wiring connector for a molding apparatus according to the present invention will be described below and described in detail with reference to the accompanying drawings.

  1 and 2, reference numeral 10 indicates a forging apparatus in which the wiring connector according to the embodiment of the present invention is incorporated. The forging apparatus 10 includes first to fourth forging dies 12a to 12d in which the first to fifth steps are performed.

  In this case, the forging apparatus 10 is a multi-step forging press capable of simultaneously performing multi-step stamping with a plurality of upper and lower dies composed of the first to fourth forging dies 12a to 12d. Thus, while maintaining the positioning accuracy of the upper and lower dies at the time of stamping, the entire upper die 14 and lower die 16 including the first to fourth forging dies 12a to 12d are integrated with the upper die holder 18 and the lower die holder 20. It is provided to be replaceable.

  A workpiece is sequentially conveyed from a workpiece supply station (not shown), a first step for holding the supplied workpiece, a second step for crushing the workpiece, and a workpiece crushed in the second step is formed into a schematic shape of a molded product. A desired shape is obtained by continuously performing a third step of roughing, a fourth step of finishing the shape of the workpiece into the shape of a molded product, and a fifth step of punching out burrs attached to the molded product. The molded product is obtained.

  Further, as shown in FIG. 3, the first to fourth forging dies 12a to 12d are constituted by a single upper die 14 and a single lower die 16 arranged linearly, The upper die 14 is fixed to an upper die holder 18 connected to a press ram (not shown) so as to be integrally movable up and down, and the lower die 16 is fixed to the lower die holder 20 via a clamping mechanism (not shown).

  Further, on both sides in the arrangement direction of the first to fourth forging dies 12a to 12d, a hollow rail for separating the predetermined distance from the lower die 16 and automatically feeding the workpiece continuously to each forming step. A pair of shaped feed bars 22a, 22b are arranged opposite to each other in the horizontal direction with the lower mold 16 in between.

  The pair of feed bars 22a and 22b are moved in the direction of the arrow X along the arrangement direction of the first to fourth forging dies 12a to 12d by the transfer mechanism 24 fixed to the apparatus main body (not shown), and the first to first Three axes composed of an arrow Y direction approaching or separating toward the four forging dies 12a to 12d and an arrow Z direction along the vertical direction (height direction) of the first to fourth forging dies 12a to 12d. It is provided so that it can move substantially simultaneously along the direction.

  A pair of clamp claws 26a and 26b for gripping a workpiece in each step are disposed opposite to the pair of feed bars 22a and 22b, and the pair of clamp claws 26a and 26b are first to fourth forged gold. A plurality of the molds 12a to 12d are provided in parallel and spaced apart at positions corresponding to the molds 12a to 12d. Each of the clamp claws 26a is provided with a detection sensor 28 for detecting the clamp state of the work when the work is gripped and the clamp claw 26a is pressed by the work.

  The detection sensor 28 detects that the workpiece has been securely clamped by pressing the clamp pawl 26a urged by a spring force of a spring member (not shown) against the spring force of the spring member. It is good to comprise by the proximity sensor which derives | leads out the clamp detection signal to perform toward an external control apparatus (after-mentioned).

  Both ends of the pair of feed bars 22a are sandwiched by feed bar attaching / detaching portions 30 of the transfer mechanism 24, respectively, and the pair of feed bars to the transfer mechanism 24 via the feed bar attaching / detaching portion 30 as will be described later. 22a and 22b are detachably provided. In this case, a positioning mechanism composed of a concave portion and a convex portion (not shown) is provided at both end portions of the feed bar attaching / detaching portion 30 and the feed bars 22a and 22b of the transfer mechanism 24, and is coaxially and accurately located through the positioning mechanism. Connected.

  A lead wire 34 extending along the internal passage 32 of the feed bar 22a is connected to the detection sensor 28 attached to each clamp claw 26a, and the lead wire 34 is disposed inside the feed bar 22a. It is electrically connected to the transmission unit 38 of the remote transmission mechanism 36 through a relay terminal box that is not connected.

  As shown in FIG. 4, the remote transmission mechanism 36 includes a transmission unit 38 that is electrically connected to the detection sensor 28 via a lead wire 34, an external power supply 40 and an external control device 42 via the lead wire 34. And an output unit 44 that is electrically connected to each other. The remote transmission mechanism 36 functions as a wiring connector according to the present embodiment.

  The transmission unit 38 is held by one heat shield plate 46a formed in a substantially T-shaped cross section fixed to the upper surface of one end of the feed bar 22a, and the output unit 44 feeds the transfer mechanism 24. It is fixed to the upper surface of the bar attaching / detaching portion 30 and is held by the other heat shield plate 46b formed in a substantially T-shaped cross section spaced a predetermined distance from the one heat shield plate 46a. The transmission unit 38 and the output unit 44 are suitably protected from heat generated when the first to fourth forging dies 12a to 12d are forged by the heat shield plates 46a and 46b.

  The heat shield plates 46a and 46b are provided only on the side surface (work side) facing the workpiece, respectively, and the other side surfaces except the side surface facing the workpiece are opened, so that It is possible to prevent the heat from being accumulated and the remote transmission mechanism 36 from malfunctioning. In the case of hot forging, an oxide scale is generated in the mold and the vicinity thereof, and a cooling / releasing agent is applied. The application of the cooling / releasing agent may also be used to remove oxide scale from the mold, and the remote transmission mechanism 36 is placed under severe conditions during forging. Therefore, in order to minimize the influence of heat, oxide scale, coolant (cooling water), mold release agent, etc., the transmission section 38 and the output section 44 constituting the above are each covered with a housing such as a box. It is preferable to shut off from the atmosphere. However, when the transmission unit 38 and the output unit 44 are surrounded by a housing such as a box, heat is stored in the housing due to forging conditions, and the temperature in the space of the housing rises, causing the transmission unit 38 and the output unit 44 to malfunction. There is a risk of operation. Therefore, in the present embodiment, the transmission unit 38 and the output unit 44 are not surrounded entirely, and the heat shield plates 46a and 46b are provided at least only on the workpiece side to protect the transmission unit 38 and the output unit 44. It is said. Even if the heat shield plates 46a and 46b are provided only on the workpiece side, the transmission unit 38 and the output unit 44 are provided movably by the transfer mechanism 24, so that the influence from the oxide scale and the cooling / release agent is suppressed. Because it can. Further, when the transmission unit 38 and the output unit 44 return to the initial positions, an air injection mechanism (not shown) for discharging air to the transmission unit 38 and the output unit 44 is provided, thereby providing an oxide scale and a cooling / releasing agent. It is preferable that the influence of the above can be further suppressed.

  The transmission unit 38 and the output unit 44 are each formed of a cylindrical body, and the transmission unit 38 and the output unit 44 are provided in a non-contact state separated by a predetermined distance.

  In this case, as shown in FIG. 5, a power signal for operating the detection sensor 28 attached to the clamp claw 26a is supplied from the external power source 40 to the output unit 44 and provided in a non-contact state under electromagnetic action. After the power signal is transmitted to the transmission unit 38, it is sent to the detection sensor 28. Contrary to the above, the clamp detection signal output from the detection sensor 28 is sent to the transmission unit 38, and the clamp detection signal is transmitted to the output unit 44 provided in a non-contact state under electromagnetic action. After that, it is led out to the external control device 42, and the external control device 42 confirms that the workpiece is securely gripped by the clamp claws 26a, 26b. In this way, it is possible to perform operation confirmation of various processes in forging using the remote transmission mechanism 36.

  In the mold replacement operation described later, the feed bars 22a and 22b and the transmission unit 38 are integrated with a die set (including a mold) except for the output unit 44 provided on the apparatus main body side via the transfer mechanism 24. Will be replaced. That is, by urging the transfer mechanism 24 in three axial directions to separate the feed bar attaching / detaching portion 30 from both ends of the feed bars 22a and 22b, the feed bars 22a and 22b are detached from the transfer mechanism 24 and removed. By supporting the feed bars 22a and 22b on a feed bar support (not shown) provided on the lower die holder 20, the feed bars 22a and 22b and the transmission are integrated with the upper and lower molds 14 and 16 and the upper and lower die holders 18 and 20. The part 38 can be pulled out of the forging apparatus 10 and replaced.

  The forging apparatus 10 incorporating the wiring connector according to the embodiment of the present invention is basically configured as described above. Next, according to the flowchart shown in FIG. The replacement work will be described below.

  The mold replacement operation is performed after the die set composed of the upper and lower molds 14 and 16 and the upper and lower die holders 18 and 20 existing in the apparatus main body is carried out of the apparatus main body via a transport carriage (not shown) and then illustrated. The other die set is carried in by the transfer carriage not to be exchanged.

  First, the transfer mechanism 24 fixed on the apparatus main body side is controlled on three axes, and the feed bar attaching / detaching portion 30 is moved from a pair of feed bars 22a and 22b in which a plurality of clamp claws 26a and 26b are arranged in parallel. The feed bars 22a and 22b are separated from the transfer mechanism 24 (step S1). In this case, the feed bars 22 a and 22 b removed from the feed bar attaching / detaching portion 30 of the transfer mechanism 24 are supported by a feed bar supporting portion (not shown) on the lower die holder 20. When the feed bars 22a and 22b are separated from the transfer mechanism 24, the upper and lower molds 14 and 16 and the upper and lower die holders 18 and 20 can be pulled out toward the outside of the apparatus main body.

  In the present embodiment, a transmission unit 38 that is electrically connected to the detection sensor 28 via the lead wire 34, and an output unit that is electrically connected to the external power supply 40 and the external control device 42 via the lead wire 34. 44 is provided in a non-contact state that is separated by a predetermined distance, so that it is not necessary to manually cut the wiring as in the prior art, and the cutting of the wiring can be automated. it can.

  Subsequently, pipes (not shown) respectively connected to the upper die holder 18 and the lower die holder 20 are automatically separated from each other, and a clamp mechanism (not shown) is deenergized to release the clamps of the upper die holder 18 and the upper die 14 from the press ram. Then, preparation for unloading the upper die holder 18 and the upper die 14 on the lower die 16 is made (steps S2, 3).

  Next, after the die set including the upper and lower molds 14 and 16 and the upper and lower die holders 18 and 20 is carried out of the apparatus main body using a transfer carriage (not shown), the bed surface in the apparatus main body is cleaned (step S4). Step S5).

  Subsequently, another die set is carried into the bed surface in the apparatus main body using another transfer carriage (not shown) (step S6), and the upper and lower die holders 18 and 20 are prepared for operation (steps S7 and S8).

  Subsequently, the transfer mechanism 24 is energized, and the pair of feed bars 22a and 22b supported on the front side and the rear side of the first to fourth forging dies 12a to 12d are respectively held by the feed bar attaching / detaching portion 30. The feed bars 22a and 22b are connected to the transfer mechanism 24 (step S9).

  In this case, the transmission unit 38 provided on one feed bar 22a and the output unit 44 provided on the feed bar attaching / detaching unit 30 of the transfer mechanism 24 are arranged in a non-contact state so as to be coaxially opposed to each other. Therefore, the power supply signal wiring connection from the external power supply 40 to the detection sensor 28 and the clamp detection signal wiring connection from the detection sensor 28 to the external control device 42 are automatically performed.

  Therefore, since the wiring connection of electric signals, which has been performed manually by the prior art, is automatically performed, it is possible to improve the production efficiency by suppressing the time loss due to the wiring connection at the time of die replacement.

  As described above, the upper die holder 18 is fixed to a press ram (not shown), and the upper die 14 held by the upper die holder 18 is also integrally fixed to the press ram. When the upper die holder 18 and the upper die 14 are raised integrally, the forging apparatus 10 is set in the initial state and the forging apparatus 10 is operated.

  In the present embodiment, the wiring connector incorporated in the forging apparatus 10 is described, but the present invention is not limited to this. For example, various types of molding such as a press molding apparatus, a casting apparatus, a die casting apparatus, etc. The remote transmission mechanism 36 can be applied to the apparatus.

  Furthermore, in the present embodiment, the description is based on the clamp detection sensor 28 that detects whether or not the workpiece is gripped by the pair of clamp claws 26a and 26b, but is not limited thereto. For example, the remote is connected to various sensors including a temperature sensor (not shown) that is disposed in the vicinity of the first to fourth forging dies 12a to 12d and detects the temperature of each of the first to fourth forging dies 12a to 12d. A transmission mechanism 36 can be applied.

1 is a schematic configuration perspective view of a forging apparatus in which a wiring connector according to an embodiment of the present invention is incorporated. It is a top view of the forge forming apparatus shown in FIG. It is a longitudinal cross-sectional schematic block diagram of the forge molding apparatus shown in FIG. FIG. 2 is a partially cutaway enlarged perspective view of a remote transmission mechanism provided in the forging device shown in FIG. 1. It is operation | movement explanatory drawing of the remote transmission mechanism shown in FIG. It is a flowchart which shows the exchange work of a metal mold | die.

Explanation of symbols

DESCRIPTION OF SYMBOLS 10 ... Forging molding apparatus 12a-12d ... Forging die 14 ... Upper die 16 ... Lower die 18 ... Upper die holder 20 ... Lower die holder 22a, 22b ... Feed bar 24 ... Transfer mechanism 26a, 26b ... Clamp claw 28 ... Detection sensor 30 ... Feed bar attaching / detaching part 34 ... Lead wire 36 ... Remote transmission mechanism 38 ... Transmission part 40 ... External power supply 42 ... External control device 44 ... Output part 46a, 46b ... Heat shield

Claims (5)

A wiring connector that is configured by a plurality of mold members and that is incorporated in a molding apparatus provided so that the mold members can be exchanged with other mold members,
A detection sensor provided on the mold member;
A transmission unit to which a detection signal from the detection sensor is sent; and
An output unit that is disposed in a non-contact state spaced apart from the transmission unit by a predetermined distance, and that is supplied with a power signal from an external power source;
With
The transmission unit is disposed on the mold member side to be replaced with the other mold member, and the output unit is disposed on the apparatus main body side excluding the plurality of mold members, and the transmission unit and the output unit The forming apparatus wiring connector, wherein the detection signal and the power signal are transmitted to each other. The wiring connector according to claim 1, wherein
The wiring connector for a forming apparatus, wherein the detection sensor is a sensor that detects that the workpiece is clamped. A plurality of molding dies provided so as to be exchangeable with other molding dies and continuously processing and molding a workpiece,
A conveying means having a set of feed bars provided with a plurality of clamp claws for holding the workpiece, and continuously conveying the workpiece along the plurality of molding dies;
A detection sensor for detecting that the workpiece is gripped by the clamp pawl;
A transmission unit to which a clamp detection signal is sent from the detection sensor;
An output unit that is disposed in a non-contact state spaced apart from the transmission unit by a predetermined distance, and that is supplied with a power signal from an external power source;
With
The transmission section is disposed on the feed bar that is integrally carried out of the apparatus main body with the plurality of molding dies, and the output section is provided on a feed bar attaching / detaching section of a transfer mechanism provided on the apparatus main body side. The forming apparatus wiring connector, wherein the clamp detection signal and the power signal are transmitted between the transmission unit and the output unit. In the wiring connector according to claim 1 or 3,
Each of the transmission unit and the output unit is provided with a heat shield plate, respectively. The wiring connector according to claim 4, wherein
The said heat shield is provided only in the side surface facing a workpiece | work, and other side surfaces except the side surface facing the said workpiece | work are provided in an open state, The wiring connector for shaping | molding apparatuses characterized by the above-mentioned.

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