JP2005067034A - Apparatus for replacing mold of injection molding machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus for replacing the mold of an injection molding machine which is simple in structure, can smoothly replace the mold without damaging a temperature adjustment cord connected to the mold, and shortens the downtime of the molding machine. <P>SOLUTION: The apparatus has a mold transportation stand 20 installed beside the injection molding machine 10 and a mold carrying mechanism 30 which carries a mold 14 in the molding machine 10 onto the stand 20 and carries a mold 15 for replacement on the stand 20 into the molding machine 10. The temperature adjustment cord 42 which is extended from a hot runner temperature adjusting machine 40 and connected to the mold 15 on the stand 20 is suspended from a horizontally swingable swing arm 72 located above the mechanism 30 and supported. In mold replacement, the cord 42 is moved to follow the movement of the mold not to be entangled. A temperature adjustment hose 52 extended from a mold temperature adjusting machine 50, to be easily connected to the mold 15 carried into the molding machine 10, is placed to the vicinity P of the mechanism 30 not to interfere with the stand 20 and the molding machine 10. The hose 52 is connected to the set mold 15, and the temperature adjusting machine 50 is actuated, so that the temperature of the mold 15 can be adjusted at a prescribed moldable temperature in a short time. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention unloads a mold removed from a mold mounting portion of an injection molding machine onto a mold carrier placed on the side of the injection molding machine, and replaces a replacement mold on the mold carrier with a molding machine. The present invention relates to a mold changing device for an injection molding machine that carries in to a mold mounting position of the mold, and in particular, a mold for exchanging a mold in a form in which a temperature control cord for power supply extending from a hot runner temperature controller is connected to the mold. It relates to an exchange device.

  In the injection molding machine, various molds are prepared in advance in order to produce a wide variety of products using a single facility, and this is dealt with by appropriately replacing the molds.

  Further, hot water is circulated and supplied to the hot water circulation passage in the mold for molding through a temperature control hose extending from a mold temperature controller disposed in the vicinity of the molding machine, so that the temperature of the entire mold is a predetermined temperature. The hot runner that is held at (for example, about 50 ° C.) and is a resin supply passage in the mold is also supplied with power through a temperature control cord that extends from a hot runner temperature controller disposed in the vicinity of the molding machine. Thus, it is held at a predetermined temperature (for example, about 270 ° C.), and high-precision molding is possible.

  When replacing the mold, the temperature control hose or temperature control cord is connected after the new replacement mold is carried into the molding machine, so it takes time to warm the mold to the specified temperature, and molding starts. Delay and production efficiency are very bad, so molds are exchanged with a temperature control hose and temperature control cord connected.

That is, conventionally, as shown in FIGS. 10 to 12, a mold exchanging carrier 2 is juxtaposed with the injection molding machine 1, and a hot runner temperature adjuster 7a and a mold temperature adjuster 7b installed on the floor. The replacement mold 6 (6a, 6b) connected to the two temperature control cords 8a for supplying hot runners extending from each of them and a large number (for example, eight) of temperature control hoses 8b for configuring the hot water circulation path The mold 5 (5a, 5b) in the molding machine 1 is unloaded onto the carriage 2 by the mold carry-in / out mechanism 3 placed on the mold carriage 2 and interposed between the molding machine 1 and the carriage 2 In addition, the replacement mold 6 on the carriage 2 is configured to be carried into the molding machine 1, and the replacement mold 6 is maintained at a predetermined temperature even during the mold replacement. The operation of the molding machine 1 can be started immediately after the mold replacement.
JP 10-44157 A

  However, in the above-described prior art, when the molds 5 and 6 are carried in and out by the mold carry-in / out mechanism 3, the molds 5 and 6 are prevented from being entangled or damaged by the temperature control cord 8a or the temperature control hose 8b. The temperature control cord 8a and the temperature control hose 8b are supported by the holding portions 4a and 4b that move in conjunction with the movement of.

  For this reason, in the prior art, since the mold after the mold replacement is surely held at a predetermined temperature at which molding can be performed, the downtime of the molding machine becomes very short and productivity is greatly improved. However, there is a problem that the structure of the mold exchanging apparatus becomes very complicated and the equipment cost is greatly increased.

  That is, as a result of examination by the inventors, the following has been found.

  The presence of the holding portions 4a and 4b that hold the temperature control cord 8a and the temperature control hose 8b so as not to be damaged is the biggest factor complicating the structure of the apparatus. Further, the temperature control cord 8a is a power supply cord for heating the hot runner, and the number of the temperature control cords 8a is smaller and less bulky than the temperature control hose 8b constituting the hot water circulation path. Further, when the temperature control cord 8a is removed from the replacement mold 6 during the mold replacement, it takes about 15 minutes to reheat the mold, whereas the temperature control hose 8b is removed from the mold 6. The mold can be reheated in a few minutes.

  Therefore, the inventor carries in the mold 6 by connecting only the temperature control cord 8a to the replacement mold 6 and suspending and supporting the temperature control cord 8a from above with a simple arm. If the temperature control hose 8b, which is bulky and heavy, is laid to the vicinity of the mold carry-in / out mechanism so that it can be easily connected to the mold 6 carried into the molding machine, the temperature control cord 8a It was thought that the mold could be smoothly taken in and out without being entangled, and the reheating time of the mold after replacement was only a few minutes using the mold temperature controller. And since it was confirmed that it was effective by creating a prototype, the present invention has been proposed.

  The present invention has been made on the basis of the problems of the prior art and the knowledge of the inventor described above, and its purpose is to have a simple structure and smoothly without damaging the temperature control cord connected to the mold. It is another object of the present invention to provide a mold exchanging apparatus for an injection molding machine that can change the mold and reduce the downtime of the molding machine.

In order to achieve the above object, in the mold changing apparatus for an injection molding machine according to claim 1, a mold carrier that is arranged in parallel with the injection molding machine and is movable in the front-rear direction, the molding machine and the carrier The mold exchange of the injection molding machine equipped with a mold loading / unloading mechanism for interposing the mold in the molding machine and carrying the mold on the carriage into the molding machine. In the device
A mold temperature adjuster and a hot runner temperature adjuster are installed in the vicinity of the molding machine and the carriage, and a temperature control cord for power supply extending from the hot runner temperature adjuster is disposed above the mold carry-in / out mechanism. Suspended and supported by a provided swing arm, connected to a replacement mold placed on the carriage, and a temperature control hose extending from the mold temperature controller so as not to interfere with the carriage and molding machine It was arranged so that it could be connected to a replacement mold carried into the molding machine.

  Note that the connection part between the temperature control cord and the replacement mold is opposite to the molding machine side (the connection part between the replacement mold placed on the carriage and the temperature control code is the mold transport mechanism. Therefore, it is desirable to place the replacement mold on the carriage.

  (Operation) The temperature of the hot runner in the replacement mold is also adjusted in the mold loading process in which the mold is loaded from the mold carrier into the molding machine. There is no need to adjust the temperature of the hot runner in a new mold set in the molding machine (on the mold mounting) before starting.

  In addition, the temperature control hose extending from the mold temperature controller is not connected to the mold carried into the molding machine from the mold carriage (the temperature of the carried mold is not controlled). Before starting the operation of the molding machine after the replacement, connect a temperature control hose extending from the mold temperature controller to a new mold set in the molding machine (mold mounting part), and keep the mold at a predetermined temperature. However, the temperature control hose extending from the mold temperature controller is disposed so as not to interfere with the transport table and the molding machine, and is laid, for example, near the mold carry-in / out mechanism. It is easy to pull out the end of the temperature control hose and connect it to the replacement mold, and after connecting this temperature control hose, the mold is pre-determined by adjusting the temperature for several minutes using a mold temperature controller. Therefore, the molding machine can be started in a short time after the mold replacement is completed. Kill.

  Among the temperature control cords and temperature control hoses that extend from the temperature controller, the temperature control cord is a power supply cord for heating the hot runner, and the number is less and lighter than the temperature control hose that constitutes the hot water circulation path. Therefore, the weight load acting on the swing arm that suspends and supports the temperature control cord is small, the swing arm is not required to have a very high rigidity and strength, and the temperature control cord with a small number is not entangled. Therefore, the holding bases 4a and 4b used in the prior art are not required, and the apparatus structure is simplified correspondingly.

  Further, the replacement mold on the carriage is carried into the molding machine by the mold carry-in / out mechanism, but the temperature control code connected to the exchange mold is arranged above the mold carry-in / out mechanism. The temperature control cord is supported by the swing arm and hung above the mold so that the temperature control cord does not come into contact with the mold carried into the molding machine. In addition, when the temperature control cord is pulled toward the molding machine as the mold is brought into the molding machine, the swing arm that extends in the direction crossing the carriage before the mold loading starts swings. Since the temperature control cord is made to follow (transfer) the mold, unexpected stress does not act on the temperature control cord.

  Prior to carrying the replacement mold on the carriage into the molding machine, the temperature control hose is removed from the mold in the molding machine, and then the mold is removed from the mold mounting part of the molding machine. The temperature control cord connected to the mold to be carried out is also supported by another swing arm arranged above the mold carry-in / out mechanism. Since it is held in a form that hangs down above the mold, the temperature control cord does not come into contact with the mold carried out to the carriage. In addition, when the temperature control cord is pulled toward the transport table as the mold is transported to the transport platform, the swing arm that extends along the transport platform before the start of transport of the mold crosses the transport platform. Since the temperature control code is caused to follow the unloading (movement) of the mold, unexpected stress does not act on the temperature control code.

  According to a second aspect of the present invention, in the mold exchanging device for an injection molding machine according to the first aspect, the swing arm is configured to be able to expand and contract in the longitudinal direction, and the magnitude of the tensile force acting on the temperature control cord. It was configured to expand and contract in conjunction with

  (Operation) When the mold is carried in / out between the molding machine and the carriage, if the temperature control cord connected to the mold is pulled in and out of the mold, the swing arm extends and the temperature control is performed. Since the cord is made to follow the movement of the mold in and out (movement), unexpected stress does not act on the temperature control cord.

  According to a third aspect of the present invention, in the mold changing apparatus for an injection molding machine according to the first or second aspect, the swing arm is straddled across the mold carry-in / out mechanism, and the injection molding machine and the mold carrier are separated from each other. It was supported by a formed gate-type gate and configured to swing horizontally within a range of 180 degrees from the front to the rear on the mold carrier side.

  (Operation) The swing range of the swing arm is limited to the mold carrier side only, and the swing arm does not enter the injection molding machine side, so the swing arm does not interfere with the operation of the injection molding machine.

  According to a fourth aspect of the present invention, in the mold changing apparatus for an injection molding machine according to any one of the first to third aspects, the mold carrier is arranged between the two injection molding machines arranged in parallel. Configured.

  (Function) Conventionally, one mold carrier is provided corresponding to one injection molding machine, but one unit is exchanged when either mold of two injection molding machines is replaced. The mold carrier can be used.

  According to the mold changing apparatus of the injection molding machine according to claim 1, since the mold can be adjusted to a predetermined temperature at which the mold can be molded in a short time after the mold exchange, the downtime of the molding machine can be suppressed to a short time. Thus, the production efficiency of injection molded products can be increased.

  In addition, the temperature control cord extending from the hot runner temperature controller to the mold is suspended and supported by a swing arm, so that the mold in the molding machine can be carried out on the carriage and replaced on the carriage. Since it is possible to smoothly carry the mold into the molding machine without damaging the temperature control cord, the cost of the injection molding equipment can be reduced.

  According to the second aspect, the mold in the molding machine can be unloaded onto the carriage and the replacement mold on the carriage into the molding machine more smoothly without damaging the temperature control cord. Therefore, further cost reduction of the injection molding equipment can be realized.

  According to the third aspect, since the swing arm does not interfere with the operation of the injection molding machine, smooth injection molding can be performed.

  According to the fourth aspect, since one mold carrier can be shared when exchanging the molds of two injection molding machines, the structure of the injection molding facility is simplified, and the installation space for the injection molding facility is also provided. Can also be reduced.

  Next, embodiments of the present invention will be described based on examples.

  1 to 7 show a first embodiment of the present invention, FIG. 1 is a plan view of the entire mold changing apparatus of an injection molding machine according to the first embodiment of the present invention, and FIG. 2 is a front view of the apparatus. 3 is a left side view of the apparatus, FIG. 4 is a front view of a swing arm as a main part of the apparatus, FIG. 5 is a right side view of the swing arm, and FIG. 6 is a plan view of the swing arm in an extended state. FIG. 7 is a left side view of the swing arm in the extended state.

  In these drawings, particularly in FIGS. 1 and 2, reference numeral 10 denotes a horizontal type injection in which a mold mounting portion 12 (movable platen 12 a and fixed platen 12 b) is provided facing the front-rear direction (left-right direction in FIG. 1) In the molding machine, molds 14 (movable side mold 14a and fixed side mold 14b) are mounted and fixed on the mold mounting part 12 (movable platen 12a and fixed platen 12b). Reference numeral 11 denotes a hydraulic cylinder that slides the movable platen 12a (movable side die 14a) toward and away from the fixed platen 12b (fixed side die 14b).

  Reference numeral 20 denotes a mold carrier arranged in parallel with the injection molding machine 10, and travels on the rail 22 by a driving means such as a hydraulic cylinder (not shown) to arrange the injection molding machine 10 in the longitudinal direction (left and right in FIG. 1). Direction). The mold carrier 20 includes a first mold mounting portion 24a on which the mold 14 (movable side mold 14a, fixed side mold 14b) carried out from the injection molding machine 10 is placed, and the inside of the molding machine 10 And a second mold mounting portion 24b for mounting a new mold 15 for replacement (movable side mold 15a, fixed side mold 15b) to be carried into the front and rear direction. When the mold carrier 20 travels (moves), the first mold mounting part 24a or the second mold mounting part 24b becomes a position corresponding to the mold carry-in / out mechanism 30 described later. .

  At a predetermined position between the injection molding machine 10 and the mold carrier 20, a mold carry-in / out mechanism 30 (conventional Japanese Patent Laid-Open Nos. 6-64000, 10-44157, etc.) composed of a transport roller and a push-push hook mechanism or the like is used. A known technique is provided, and the mold 14 (14a, 14b) removed from the mold mounting portion 12 (movable platen 12a, fixed platen 12b) is used as the first mold mounting portion 24a of the carriage 20. The new mold 15 (15a, 15b) for replacement on the second mold mounting portion 24b is transferred to the mold mounting portion 12 (movable platen 12a, fixed platen 12b). ) It can be loaded to the position.

  Reference numerals 40, 50 denote hot runner temperature adjusters and mold temperature adjusters installed on the floor near the mold carrier 20, and the mold 14 attached to the mold attachment portion 12 in the molding machine 10. The (movable side mold 14a, fixed side mold 14b) and these temperature adjusters 40, 50 are two temperatures that are cords for supplying power to the hot runner in the mold 14 (movable side mold 14a). The control cord 42 is connected via eight temperature control hoses 52 which are circulating hot water pipes to the hot water passage in the mold 14 (movable side mold 14a, fixed side mold 14b). That is, the temperature of the hot runner as a resin supply passage in the mold 14 (14a) is set to a constant temperature by the temperature adjuster 40, and the temperature of the entire mold 14 (14a, 14b) is set to a constant temperature by the mold temperature adjuster 50, respectively. It is managed.

  The temperature control hose 52 extending from the mold temperature controller 50 is thicker and more bulky than the temperature control cord 42, and also contains warm water and has weight, so that the molding machine 10 can be operated. From the position near the mold temperature controller 50 to the pull-out position P (see FIG. 1) near the mold carry-in / out mechanism 30 and laid out on the floor so as not to obstruct the travel of the carriage 20 and pulled out from the pull-out position P. While the end of the temperature control hose 52 is connected to the mold 14 via the connector 53, the temperature control cord 42 extending from the hot runner temperature controller 40 is less in number than the temperature control hose 52. Since it is lightweight and not bulky, it is suspended and supported by a first swing arm 72 having a simple structure carried on a gate-type gate 70 provided between the injection molding machine 10 and the mold carrier 20, and a part thereof is loosened. Like And it is connected to the mold 14 (see FIGS. 1 and 2).

  Moreover, each temperature control cord 42 and the connection (attachment / detachment) between the temperature control hose 52 and the mold 14 can be made through the connectors 43 and 53, respectively, and each temperature control hose 52 is one continuous. Each temperature adjustment cord 42 is composed of a hose, and each temperature adjustment cord 42 includes a first temperature adjustment cord 42 a extending from the hot runner temperature adjuster 40 to the vicinity of the swing arm 72 and a second temperature extension cord 42 extending from the vicinity of the swing arm 72 to the mold 14. The temperature control cord 42b is connected by connectors 44 and 54 (see FIGS. 4 and 6).

  Reference numerals 40 </ b> A and 50 </ b> A are installed on the floor surface in the vicinity of the mold carrier 20 on the opposite side of the hot runner temperature adjuster 40 and the mold temperature adjuster 50 and are used for replacement to be carried into the molding machine 10. This is a hot runner temperature adjusting machine and a mold temperature adjusting machine corresponding to a new mold 15 (movable side mold 15a, fixed side mold 15b). Since the temperature control hose 52A extending from the mold temperature controller 50A is as many as eight and has a bulky weight, a mold carry-in / out mechanism is provided so as not to obstruct the operation of the molding machine 10 and the travel of the carriage 20. The end of the temperature control hose 52A that is laid on the floor up to the drawer position P in the vicinity of 30 and pulled out from the floor can be easily attached to the mold 15 carried into the molding machine 10 via the connector 53A. ing.

  On the other hand, the temperature control cord 42A, which is light and extends from the hot runner temperature adjuster 40A and has a small number of two, is similar to the end of the temperature control cord 42 that connects the unloading mold 14 and the hot runner temperature adjuster 40. It is suspended and supported by a second swing arm 72A provided on the gate-type gate 70, and is connected to the mold 15 (15a) so that a part thereof is loosened. Each temperature adjustment cord 42A includes a first temperature adjustment cord 42a1 extending from the hot runner temperature adjuster 40A to the second swing arm 72A, and a second temperature adjustment extending from the swing arm 72A to the mold 15 (15a, 15b). The two cords 42b1 are connected by connectors 44A and 54A (see FIG. 2).

  The gate-type gate 70 is disposed so as to straddle the mold carry-in / out mechanism 30, and is provided at a position separating the injection molding machine 10 and the mold carrier 20, and driving the mold carry-in / out mechanism 30. Thus, the molds 14 and 15 are carried in and out between the injection molding machine 10 and the mold carrier 20 so as to go under the portal gate 70.

  The swing arms 72 and 72A are provided symmetrically with the mold carry-in / out mechanism 30 in between, and are respectively supported on the lower surface side of the horizontal beam 71 of the gate gate 70 so that the mold carrier 20 side is within a range of 180 degrees. Thus, the structure can swing horizontally around the rotation support shaft X (see FIG. 4) and can expand and contract in the longitudinal direction (see FIGS. 6 and 7). That is, as shown in FIGS. 4 to 6, the main body of the swing arm 72 (72A) has a housing 73 fixed and integrated on the side surface of the air cylinder 74, and a bracket 75 and a housing provided at the tip of the telescopic rod 74a of the air cylinder 74. The LM guide 76 is provided between 73, and the amount of protrusion of the telescopic rod 74a (bracket 75) to the front of the housing 73 (the total length of the swing arm) is changed by the operation of the air cylinder 74. The pressure of the air cylinder 74 is adjusted so that a predetermined urging force in the pull-in direction always acts on 74a.

  The temperature adjustment cord 42 (42A) is bound and fixed to the bracket 75 of the swing arm 72 (72A) by predetermined fixing means 78 (see FIGS. 6 and 7), and acts on the temperature adjustment cord 42b (42b1). In conjunction with the magnitude of the tensile force F (see FIGS. 6 and 7), the swing arm 72 (72A) swings in the horizontal direction and the telescopic rod 74a expands and contracts, so that excessive tensile force is controlled by temperature. The cord 42 (42A) is configured not to act. For example, when a tensile force greater than the urging force of the air cylinder 74 acts on the temperature control cord 42 (42A) between the mold 14 (15) and the bracket 75, the swing arm 72 (72A) swings or the telescopic rod 74a moves. By being stretched, the temperature adjustment cord 42 (42A) follows the movement of the mold 14 (15), the tensile force acting on the temperature adjustment cord 42 (42A) is reduced, and the temperature adjustment cord 42 (42A) It is designed not to be damaged.

  Further, the swing arm 72 (72A) that can freely swing around the rotation support shaft X is a horizontal beam 71 of the gate-type gate 70 by a rotary actuator 79 provided at the position of the rotation support shaft X of the swing arm 72 (72A). It is comprised so that it can be fixedly held in the position (position of a horizontal rocking | fluctuation range 180 degree | times) along. That is, for example, the temperature control cord 42A that connects the mold 15 carried into the molding machine 10 and the hot runner temperature controller 40A is suspended and supported by the swing arm 72A. By the operation of the rotary actuator 79, it swings to the mold carry-in / out mechanism 30 side and is locked at a position along the horizontal beam 71 of the gate-type gate 70, so that the swing arm 72A does not move and disturbs the mold exchanging work. It is supposed not to be. Further, even after the temperature control cord 42 extending from the hot runner temperature adjuster 40 is disconnected from the carried-out mold 14, the swing arm 72 is opposite to the mold carry-in / out mechanism 30 by the operation of the rotary actuator 79. Thus, the swing gate 72 is locked at a position along the horizontal beam 71 of the gate-type gate 70 so as not to obstruct the mold exchanging work.

  Next, a mold exchanging process in the molding machine 10 will be described. First, the new mold 15 for replacement is placed on the mold placing portion 24b of the carriage 20, and the hot runner temperature adjuster is provided via the temperature control cord 42A suspended and supported by the swing arm 72A. 40 and the mold 15 are connected, and the temperature of the hot runner of the mold 15 is adjusted. Next, the carriage 20 is moved so that the first mold mounting portion 24 a is positioned corresponding to the mold carry-out mechanism 30. Then, after removing the temperature control hose 52 from the mold 14 (14a, 14b) in the molding machine 10, the mold 14 is removed from the mold mounting portion 12 of the molding machine 10, and the mold 14 is carried in and out of the mold. The mechanism 30 carries it out onto the mold placing part 24a of the carriage 20.

  In this mold unloading machine, the temperature control cord 42 that is still connected to the mold 14 is supported by the swing arm 72 above the mold unloading / unloading mechanism 30 and hanging down above the mold 14. When the temperature adjustment cord 42 is pulled toward the carriage 20 as the mold 14 is carried out to the carriage 20, the swing arm 72 originally in the form along the horizontal beam 71 of the gate-type gate 70 is used. Oscillates in a direction crossing the carriage 20, and further, when a tensile force greater than the set urging force of the air cylinder 74 acts on the temperature control cord 42, the telescopic rod 74a extends, and the temperature control cord 42 is carried out of the mold 14. Since the movement is followed, unexpected stress does not act on the temperature control cord 42. Further, when the tensile force acting on the temperature adjustment cord 42 becomes equal to or less than the set urging force of the air cylinder 74, the temperature adjustment cord 42 is pulled back together with the telescopic rod 74a. There will be no obstacles to carrying out.

  When unloading of the mold 14 to the carriage 20 (first mold mounting portion 24a) is completed, the temperature control cord 42 extending from the hot runner temperature adjuster 40 is disconnected from the mold 14, and the rotary actuator 79 is disconnected. And the swing arm 72 is locked to a position on the opposite side of the mold carry-in / out mechanism 30 and along the horizontal beam 71 of the gate-type gate 70 so as not to obstruct the mold exchanging work. Then, the carriage 20 is moved so that the second mold mounting portion 24 b is positioned corresponding to the carry-in / out mechanism 30. And the metal mold | die 15 on the conveyance stand 20 (the 2nd metal mold mounting part 24b) is carried in in the molding machine 10 by the carrying in / out mechanism 30. FIG.

  In this mold carry-in machine, the temperature control cord 42A for connecting the hot runner temperature controller 40 and the mold 15 is supported by a form suspended from the upper swing arm 72A and hanging down above the mold 15. When the temperature control cord 42A is pulled toward the molding machine 10 as the mold 15 is carried into the molding machine 10, the swing arm 72A that was initially in the direction crossing the carriage 20 is a gate-type gate. Since the temperature control cord 42A is swung to the position along the horizontal beam 71 of 70 to follow the carry-in (movement) of the mold 15, unexpected stress does not act on the temperature control cord 42A. In addition, the swing arm 72A is locked at a position along the horizontal beam 71 of the gate-type gate 70 by the operation of the rotary actuator 79 and does not swing freely. There will be no hindrance to the connection work to 15 or the like.

  When the carry-in of the mold 15 into the molding machine 10 is completed, the mold 15 (15a, 15b) is attached to the mold attachment portion 12 (12a, 12b). Then, the operator grasps and pulls the end portion of the temperature control hose 52 arranged at the pull-out position P near the carry-in / out mechanism 30 and inserts it into the mold 15 (15a, 15b) via the connector 53A (see FIG. 1). To complete the die exchange. Since the hot runner of the mold 15 has already been adjusted to a predetermined temperature, the temperature of the entire mold 15 (15a, 15b) is adjusted to a predetermined moldable temperature by the mold temperature adjuster 50. Then, the molding using the mold 15 can be started.

  8 and 9 show a second embodiment of the present invention, FIG. 8 is a plan view of the whole mold changing device of the injection molding machine, and FIG. 9 is a left side view of the same device.

  In the second embodiment, a mold carrier 20 is arranged between two injection molding machines 10 and 10A arranged side by side, and either mold of the two injection molding machines 10 and 10A is exchanged. In this case, one mold carrier 20 can be shared.

  That is, in addition to the mold exchanging apparatus of the first embodiment described above, another injection molding machine 10A is arranged in parallel on the opposite side of the mold carrier 20 from the side on which the injection molding machine 10 is arranged. Then, the mold 14A (movable side mold 14a1, fixed side mold 14b1) in the injection molding machine 10A is also carried out between the injection molding machine 10A and the mold carriage 20 on the mold carriage 20. At the same time, a new mold 15A (movable mold 15a1, fixed mold 15b1) on the mold carrier 20 is transferred into the injection molding machine 10A. The same conventionally known mold carry-in / out mechanism is provided, and a gate-type gate 70A having a pair of swing arms 72, 72A is provided at a position straddling the mold carry-in / out mechanism 30A.

  The gate-type gate 70A provided with the swing arms 72, 72A has the same structure as the gate-type gate 70. The swing arm 72 includes the mold 14A (14b1) in the injection molding machine 10A and the hot runner temperature adjuster 40B. The temperature control cord 42B for connecting is suspended and supported. Further, the temperature control hose 52B extending from the mold temperature controller 50B is laid on the floor up to the pull-out position P1 in the vicinity of the mold carry-in / out mechanism 30A so as not to interfere with the operation of the molding machine 10A and the traveling of the transport table 20. The end of the temperature control hose 52A drawn out from the end is connected to the mold 14A (14a1, 14b1) in the molding machine 10A via the connector 53B.

  In addition, a new mold 15A that is carried into the molding machine 10A using the carriage 20 is placed on the mold mounting portion 24b of the carriage 20 in a form in which a temperature control cord 42C extending from the hot runner temperature regulator 40C is connected. The temperature control cord 42C is suspended and supported by the swing arm 72A. On the other hand, the temperature control hose 52C extending from the mold temperature controller 50C is laid on the floor up to the pull-out position P1 in the vicinity of the mold carry-in / out mechanism 30A so as not to interfere with the operation of the molding machine 10A and the travel of the carriage 20. The end portion of the temperature control hose 52C drawn out from it can be easily connected to the mold 15A (15a1, 15b1) carried into the molding machine 10A via the connector 53C.

  When the molds 14A and 15A are carried in and out using the mold carry-in / out mechanism 30A, the temperature control cords 42B and 42C can follow the movement of the molds 14A and 15A by the action of the swing arms 72 and 72A. Therefore, the cords 42B and 42C do not get entangled and do not obstruct the loading and unloading of the molds 14A and 15A.

  Furthermore, the molding using the mold 15 can be started in a short time by connecting the temperature control hose 52C to the mold 15A carried into the molding machine 10A and adjusting the temperature of the mold 15A.

It is a top view of the whole metal mold | die exchange apparatus of the injection molding machine which is the 1st Example of this invention. It is a front view of the same apparatus. It is a left view of the same device. It is a front view of the swing arm which is the principal part of the apparatus. It is a right view of the swing arm. It is a top view of the extension state of the swing arm. It is a left view of the extension state of the swing arm. It is a top view of the whole metal mold | die exchange apparatus of the injection molding machine which is the 2nd Example of this invention. It is a left view of the same device. It is a top view of the metal mold | die exchange apparatus of the conventional injection molding machine. It is a left view of the same mold exchanging device. It is a perspective view which shows the holding | maintenance part which supports a temperature control code | cord | chord and a temperature control hose.

Explanation of symbols

10, 10A Injection molding machine 12 (12a, 12b) Mold mounting part 14 (14a, 14b), 14A (14a1, 14b1) Mold 15 (15a, 15b), 15A (15a1, 15b1) Replacement mold 20 Mold Mold carrier 30, 30A Mold carry-in / out mechanism 40, 40A, 40B, 40C Hot runner temperature adjuster 42, 42A, 42B, 42C Temperature control code 50, 50A, 50B, 50C Mold temperature adjuster 52, 52A, 52B , 52C Temperature control hose 53, 53A, 53B, 53C Temperature control hose connector P, P1 Temperature control hose pull-out position 70 Gate-type gate 72, 72A Swing arm 74 Air cylinder 74a Telescopic rod X Swing arm rotation support shaft

Claims (4)

A mold carrier that is arranged in parallel in the injection molding machine and is movable in the front-rear direction, and is interposed between the molding machine and the carrier, and carries the mold in the molding machine onto the carrier, and on the carrier In a mold changer for an injection molding machine provided with a mold carry-in / out mechanism for carrying a replacement mold into a molding machine,
A mold temperature adjuster and a hot runner temperature adjuster are installed in the vicinity of the molding machine and the carriage, and a temperature control cord for power supply extending from the hot runner temperature adjuster is located above the mold carry-in / out mechanism. A temperature control hose that is suspended and supported by a swing arm provided on the base plate and connected to a replacement mold placed on the carriage, and extends from the mold temperature controller, interferes with the carriage and the molding machine. A mold exchanging apparatus for an injection molding machine, wherein the mold exchanging apparatus is arranged so as not to be connected to a replacement mold carried into the molding machine.   2. The injection molding machine according to claim 1, wherein the swing arm is configured to expand and contract in a longitudinal direction, and expands and contracts in association with a magnitude of a tensile force acting on the temperature control cord. Mold changer.   The swing arm straddles the mold carry-in / out mechanism, is supported by a gate-type gate that separates the injection molding machine and the mold carrier, and is 180 degrees from the front to the rear on the mold carrier side. The mold exchanging apparatus for an injection molding machine according to claim 1 or 2, wherein the mold exchanging apparatus horizontally swings within a range.   The mold changing apparatus for an injection molding machine according to any one of claims 1 to 3, wherein the mold carrier is disposed between the two injection molding machines provided side by side.

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