JP3251345B2 - Mold changing device of injection molding machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold exchanging apparatus for an injection molding machine, and more particularly to an apparatus capable of exchanging a mold with a mold heating hose connected to the mold.

[0002]

2. Description of the Related Art As a mold exchanging apparatus suitable for exchanging a mold of an injection molding machine or a press machine, Japanese Patent Publication No. 55-48 is known.
No. 535 and Japanese Patent Publication No. Sho 62-29124,
A movable trolley having a surface mold mounting portion is configured to be able to run on a rail by itself, and a guide member with a T groove is provided in each mold mounting portion,
A sprocket driven by a motor is provided at an outer end of the guide member, and a chain with a roller engaged with the sprocket and introduced into the T groove is connected to a carrier movably engaged with the guide member. A mold moving device in which a carrier is provided with an engagement arm having an engagement portion that engages with an engagement member of a mold is described.

[0003] In an injection molding machine, the mold is usually replaced while a hose for circulating hot water is connected to the mold in order to control the temperature of the mold, and the hose is maintained in a connected state even during injection molding. Therefore, Japanese Patent Publication No. 1-84848 discloses an injection molding machine in which a movable table having two mold mounting portions is installed on the opposite side of the injection molding machine (opposite to the operation panel) so as to be capable of switching positions. And a transfer device for transferring the mold between the mold-clamping chamber between the mold fixing plates and the mold mounting portion located in front of the mold-fixing plate. A unit is provided, a plurality of flexible hoses connected to each heating unit are raised upward through the inside of the pipe, and the plurality of hoses are connected to the corresponding molds. There is described an injection molding machine configured so that a mold can be transported between the mold mounting portion.

[0004]

[Problems to be Solved by the Invention]
In the injection molding machine described in Japanese Patent No. 848, the four hoses are arranged in the air with a long slack from the upper end of the pipe column to the mold, so that the arrangement of the hoses is cluttered. A part of the hose is twisted due to the change of the mold, so that the durability of the hose is apt to decrease, a large space is occupied for arranging the hose, and the heating device is fixed on the floor. However, there is a problem that the length of the hose becomes long because the hose is installed in the space. SUMMARY OF THE INVENTION It is an object of the present invention to provide a mold changing device for an injection molding machine in which a hose extending from a heating device to a mold can be disposed by effectively utilizing a chain with rollers of a mold transfer device.

[0005]

According to a first aspect of the present invention, there is provided a mold exchanging apparatus for an injection molding machine, comprising: a mold mounting portion between a pair of mold fixing plates of the injection molding machine; and a front side or a rear side of the injection molding machine. In a mold exchanging apparatus for exchanging a mold between a movable table having two mold mounting portions movably arranged in a mold clamping direction, the mold mounting portions are substantially provided with a mold. A roller conveyor for movably supporting in a horizontal direction is provided; a plurality of roller members for movably supporting the mold in a substantially horizontal direction at the same level as the roller conveyor are provided on a mold fixing plate; A guide member extending in the mold transfer direction, a guide groove formed in the guide member, a carrier movable along the guide member, and a push-pull engagement with an engagement portion of the mold provided on the carrier. An engagement member is introduced into the guide groove from an outer end of the guide groove and one end is connected to the carrier. A mold transfer device provided with a chain member with rollers and a driving means for driving the chain member forward and backward on the outer end side of the guide groove, one end of which is connected to a heating device for heating the mold. Two flexible hoses are arranged along the chain member, and inside the carrier,
Section, two merging passages and two from each of these merging passages
And the two flexible hoods are formed.
While connecting the other end of each
Female and male molds are used for the two branch passages branched from the merging passage
DOO through the flexible hose and respectively connected to, and is characterized in that it has replaceable configure while mold was connected to the mold and a heating device via a flexible hose of the six .

The link plate of the chain member is constituted by a U-shaped link plate having an inverted U-shaped cross section, and the flexible hose is guided in a hose guide passage inside the U-shaped link plate. Further, the chain member may include a plurality of U-shaped restricting portions at predetermined intervals for restricting the position of the flexible hose so as to extend along the chain member .

According to a fourth aspect of the present invention, there is provided a mold exchanging device for an injection molding machine.
2. The apparatus according to claim 1, wherein the two flexible hoses extending along the chain member include a flexible hose for supplying hot water and a flexible hose for returning hot water. According to a fifth aspect of the present invention, there is provided a mold exchanging apparatus for an injection molding machine.
In a mold exchanging device for carrying a mold in and out of a movable trolley having a mold mounting portion on one side with respect to a mold mounting portion between a pair of mold fixing plates, movement of the exchanging position from the mold mounting portion. A mold transfer path extending substantially horizontally on the mold mounting portion of the cart, a guide member having a guide groove extending in the mold transfer direction provided in the mold transfer path, and a carrier movable along the guide member; The carrier is provided with an engaging member which is pushed and pulled into engagement with the engaging portion of the mold, with a roller which is introduced into the guide groove from the outer end of the guide groove and whose forward end is connected to the carrier. A chain member is provided, driving means for driving the chain member forward and backward is provided on the outer end side of the guide groove, and two flexible hoses each having one end connected to a heating device for heating the mold are connected to the chain member. And two inside the carrier
A merging passage and two branches from each of the merging passages
A fork, and the other ends of the two flexible hoses are
Connected to each of the two merging passages, and from each merging passage.
The two branched passages are connected to the female mold and the male mold by a flexible hose.
And characterized in that to each connected through the over scan, and loading and unloading can configure mold against left mold mounting portions connecting the mold and the heating device via a flexible hose of the six Is what you do.

According to a sixth aspect of the present invention, there is provided a mold changing apparatus for an injection molding machine,
2. The apparatus according to claim 1, wherein the heating device is attached to a moving table. According to a seventh aspect of the present invention, there is provided a mold exchanging device for an injection molding machine, wherein the heating device is attached to a movable trolley in the device of the fifth aspect .

[0009]

According to the mold changing device of the injection molding machine of the first aspect, the engaging member engaged with the engaging portion of the mold by driving the chain member with the roller forward and backward by the driving means of the mold transferring device. Drive the carrier having
The mold is replaced by pushing or driving the mold. The two flexible hoses connected to the heating device were arranged along the chain member, and the mold was replaced while the one end of the hose was connected to the mold. The temperature can be adjusted appropriately, and the hoses are arranged neatly along the chain members, making them appear tidy, the space occupied by the hoses is reduced, and the hoses are partly durable without being twisted. improves. Only
Also, inside the carrier, two merging passages,
Two branch passages each branching from the junction passage are provided;
Connect the other ends of the flexible hoses to the two merging passages respectively
And the two branch passages branched from each merging passage
Connected to the female mold and male mold via flexible hoses respectively
So the arrangement of hoses near the carrier was neat
It can be something.

When the link plate of the chain member is formed of a U-shaped link plate, a hose guide passage is formed inside the link plate, and the hose is guided in the hose guide passage, the hose is not exposed to the outside. In addition, the protection and appearance of the hose can be improved. Also, in the case where a plurality of U-shaped restricting portions for regulating the position of the hose are provided on the chain member, the hose can be installed neatly along the chain member.

According to a fourth aspect of the present invention, there is provided the mold exchanging apparatus.
The two flexible hoses are a flexible hose for supplying hot water,
Since it is made of a flexible hose for returning hot water, it is possible to reliably circulate hot water to the mold.

In the mold exchanging device according to the fifth aspect, since the mold can be exchanged while the mold and the heating device are connected via the flexible hose , two molds are provided inside the carrier.
And a branch passage that branches off from each of these merged passages.
The two branch passages branched from each merged passage are female molds
And the male mold via a flexible hose, respectively,
The same operation as in the first aspect is obtained, and one mold is placed on each movable carriage, so that the movable carriage can be used in common across a plurality of injection molding machines. is there. In the mold exchanging device according to the sixth aspect , the heating device of the device according to the first aspect is attached to the moving table, so that the required length of the hose can be shortened. In the mold exchanging device according to the seventh aspect , since the heating device of the device according to the fifth aspect is attached to the movable trolley, the connection work for connecting the hose on the movable trolley side to the heating device can be omitted.

[0013]

As described above, according to the present invention, the following effects can be obtained. According to the mold changing device of the first aspect, two flexible hoses connected to the heating device are arranged along the chain member of the mold transfer device, and one end of the hose is connected to the mold. The mold is replaced while the mold is being replaced, so that the temperature of the mold can be adjusted appropriately, and the hoses are arranged neatly along the chain members, making the appearance tidy, and the space occupied by the hose is reduced The size of the hose is reduced, and the durability is improved without twisting of a part of the hose. Moreover, two merges are made inside the carrier.
A passage and a branch passage that branches into two from each of these merged passages
And the other end of two flexible hoses are merged into two
Connected to each other, and branched from each merging passage.
The branch passage is connected to the female mold and the male mold via a flexible hose.
Connected to each other, so the arrangement of hoses near the carrier
I can make my condition orderly.

When the link plate of the chain member is constituted by a U-shaped link plate, a hose guide passage is formed inside the link plate, and the hose is guided in the hose guide passage, the hose is not exposed to the outside. In addition, the protection and appearance of the hose can be improved. Also, in the case where a plurality of U-shaped restricting portions for regulating the position of the hose are provided on the chain member, the hose can be installed neatly along the chain member.

According to the die changing apparatus according to claim 4, wherein the 2
Since the flexible hose of the present invention includes a flexible hose for supplying hot water and a flexible hose for returning hot water, it is possible to reliably circulate hot water to the mold.

According to the mold exchanging apparatus according to claim 5, while the mold and the heating device are connected via a flexible hose, for exchange of the mold, also with two converging passage to the carrier
Two branch paths are provided from each of these merging paths.
The two branch passages branched from each merging passage are used as female molds.
The same effects as in claim 1 can be obtained because they are connected to the male molds via flexible hoses , respectively. In addition, since one mold is mounted on each movable cart, the movable cart is formed by a plurality of injection moldings. Since it can be commonly used across machines, equipment is economically advantageous.
According to the mold changing apparatus of the sixth aspect , the heating device of the apparatus of the first aspect is attached to the moving table, so that the required length of the hose can be shortened. According to the mold exchanging device of the seventh aspect , since the heating device of the device of the fifth aspect is attached to the movable trolley, the connection work for connecting the hose on the movable trolley side to the heating device can be omitted.

[0017]

Hereinafter, embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 3, in the injection molding machine 1, a pair of vertically oriented mold fixing plates 2 and 3 are provided to face each other, and the movable mold fixing plate 2 is fixed to the fixed side. Is guided via four guide rods 4 to the mold fixing plate 3, and the mold fixing plate 2 is configured to be movable forward and backward with respect to the mold fixing plate 3 by a hydraulic cylinder 5, One of the female mold and the male mold is fixed to the mold fixing plate 2 and the other is fixed to the mold fixing plate 3, and the raw material supplied from the hopper (not shown) is heated and melted by the heater of the injection mechanism 6. In this state, pressure is injected from the nozzle 7 into the molding cavity in the mold 10.

A mold exchanging apparatus for exchanging the mold 10 will be described. As shown in FIGS. 1 to 3, when the mold 10 is replaced, the female mold and the male mold of the mold 10 are transferred while being integrally connected. For the transfer, the opposite side of the injection molding machine 1 (the side opposite to the operation panel 8, hereinafter referred to as the front side for convenience of explanation)
A movable platform 13 having mold mounting portions 11 and 12 on the surface is disposed on a frame 14, and the movable platform 13 has four idler wheels 16 that roll on a pair of rails 15 in front and behind the frame 14. The movable table 13 has a first position (one solid line in FIG. 1) in which one of the mold mounting portions 11 is located in front of the mold mounting portion 9 between the mold fixing plates 2 and 3, and the other. The position of the mold mounting portion 12 can be switched by the hydraulic cylinder 17 over a second position located in front of the mold mounting portion 9.

Each of the mold mounting portions 11 and 12 has a mold 1
Roller conveyors 20 and 21 are provided to support the flange portions 18 at both ends of the “0” horizontally and movably in the front-rear direction. The roller conveyor 21 on the movable mold fixed platen 2 side
Are formed so as to be capable of transporting the molds 10 of various sizes, and the level of the conveying surfaces of the roller conveyors 20 and 21 is as follows.
It is configured at the same level as the lower end of the mold 10 fixed to the mold fixing plates 2 and 3. A plurality of freely rotatable rollers 22 are provided below the mold fixing plates 2 and 3, and the lower ends of the flange portions 18 of the mold 10 are provided at the front ends of the mold fixing plates 2 and 3. A pair of left and right roller conveyors 2 movably supported
3 and 24 are provided, and the level of the conveying surface of the plurality of rollers 22 and the roller conveyors 23 and 24 is set to the mold mounting units 11 and 1.
It is configured at the same level as the transport surfaces of the second roller conveyors 20 and 21.

A description will be given of the mold transfer devices 30 provided in the mold placing sections 11 and 12, respectively.
A guide member 34 having a T-groove 31 as a guide groove as shown in FIG. 5 is provided in the center of the left and right direction in the front-rear direction, and a carrier 35 movable along the guide member 34 is provided. A chain 36 with a roller is guided in the T groove 31 of the guide member 34, and the rear end of the chain 36 is connected to the leg 37 of the carrier 35 via a connecting member 39, and the front end side of the chain 36. Part is sprocket box 4
2 is engaged with a pair of sprockets 41 and is turned downward. The heating device 40 extends downward from an opening 42a at the lower end of the sprocket box 42 and is provided on the lower surface of the moving table 13.
It is connected to. An engagement arm 43 as an engagement member is pivotally attached to the carrier 35 so as to be vertically swingable. An engagement portion 44 temporarily fixed to the mold 10 is provided at a rear end of the engagement arm 43. Hole portion 43a that engages with a push-pull mechanism.
The carrier 35 is provided with a hydraulic cylinder 45 for switching the position of the engaging arm 43 up and down. The lower leg 37 of the carrier 35 is located in the wide groove 32 of the T groove 31 so that the carrier 35 is movable. Is provided with a roller 38 for supporting.

The chain 36 with rollers is formed by connecting a plurality of link plates 46 having an inverted U-shaped cross section with pins 47.
7 are provided with rollers 48 at both ends, so that end faces of adjacent link plates 46 are in contact with each other,
The roller 48 of the chain 36 is connected to the wide groove 32 of the T groove 31.
The inverted U-shaped portion at the upper portion of the link plate 46 is movably received in the vertical groove portion 33 of the T groove 31, and a hose guide passage 49 is formed inside the link plate 46. ing. As described above, since the chain 36 is guided by being engaged with the T groove 31, the die 10 can be pushed and pulled by the chain 36 via the carrier 35 and the engagement arm 43. The pair of sprockets 41 are configured to engage with rollers 48 on both sides of the chain 36.

An electric motor 50 with a speed reducer as a driving means for rotating the sprocket 41 is attached to the sprocket box 42. When the sprocket 41 is driven clockwise in FIG.
6 is driven rearward, the carrier 35 is driven rearward,
When the sprocket 41 is driven in the counterclockwise direction, the chain 36 is driven forward, and the carrier 35 is driven forward. An auxiliary guide member 51 is provided behind the guide member 34 of the mold mounting portion 11 located in front of the mold mounting portion 9, and the auxiliary guide member 51 is connected to the roller conveyor 23 via a connecting plate 52. It is fixedly supported by 24 frame plates. However, the auxiliary guide member 51 may be configured such that its front end is hingedly connected to the movable base 13 and can be switched between a horizontal position and a standing position or a hanging position by a hydraulic cylinder or the like.

The heating device 40 attached to the lower surface of the moving table 13 circulates hot water through the
The heating device 40 is supplied with water and electric power from outside through a water supply system and a power supply system (not shown), and is provided below the mold mounting portion 11 of the heating device 40. The two flexible hoses 53 and 54 connected to the hot water supply port and the hot water return port, respectively, are guided in the hose guide passage 49 of the chain 36 of the mold placing portion 11 and
Extends to the outside of the rear end. As shown in FIG. 7, the inside of the carrier 35 has a merging passage 55 that opens at the front end of the carrier 35 for supplying hot water, and a branching portion that branches off from the merging passage 55 and opens at the upper right and left portions of the carrier 35. Branching passages 56 and 57 are formed, and a merging passage 58 that opens at the front end of the carrier 35 for returning hot water, and a branch that branches off from the merging passage 58 and opens at the upper right and left portions of the carrier 35. Passages 59 and 60 are formed.

The rear end of the hot water supply hose 53 installed in the hose installation passage 49 of the chain 36 is connected to the junction passage 55, and the right branch passage 56 is fixed to the mold fixing plate 3. And a hot water supply port of a female mold or a male mold via a flexible hose 61.
7 is connected to a hot water supply port of a male mold or a female mold fixed to the mold fixing plate 2 via a flexible hose 62 and is guided in a hose guide passage 49 of the chain 36. The rear end of the hot water return hose 54 is connected to the junction passage 58, and the right branch passage 59 is connected to the female or male mold hot water return port fixed to the mold fixing plate 3 by a flexible hose 63. The left branch passage 60 is connected via a flexible hose 64 to a hot water return port of a male or female mold fixed to the mold fixing plate 2. As described above, the mold placing unit 1
The mold 10 can be replaced while the hot water supply hose 53 and the hot water return hose 54 connected to the heating device 40 are connected to the upper mold 10.

The mold mounting portion 12 of the heating device 40
Hot water supply hose 53 and hot water return hose 54 connected to the hot water supply port and the hot water return port corresponding to
Are guided in the hose guide passage 49 of the chain 36 of the mold mounting portion 12 and extend to the rear end of the carrier 35, and four passages 55 to 60 in the carrier 36 are provided in the same manner as described above. Are connected to the mold 10 via flexible hoses 61 to 64. A hydraulic pressure supply device (not shown) for supplying hydraulic pressure to the hydraulic cylinder 45 is provided near the heating device 40, and a flexible hydraulic hose 65 connected to the hydraulic cylinder 45 is connected to a hose guide in the chain 36. The hydraulic hose 65 is guided in the passage 49 and is connected to a hydraulic supply device.

Next, the operation of the above-described mold exchanging apparatus will be described. During injection molding in the injection molding machine 1, the hot water supply hose 53 and the hot water return hose 54 were connected to the mold 10 via passages 55 to 60 and four flexible hoses 61 to 64 in the carrier 35. It is kept in a state and molded while controlling the temperature. During molding using one mold 10, there is no mold 10 on the mold placement section 11 at the replacement position in front of the mold mounting section 9, and the mold on the mold placement section 12 at the standby position is not provided. In the mold 10, the temperature of the hot water supply hose 53 and the hot water return hose 54 is controlled while being connected to the heating device 40 via the passages 55 to 60 and the four flexible hoses 61 to 64 in the carrier 35. , Held in a standby state.

When the mold 10 is replaced after the completion of molding by the one mold 10, the motor 50 of the mold mounting portion 11 at the replacement position is driven to move the chain 36 forward to drive the chain. With the engagement hole 43a of the joint arm 43 engaged with the engagement portion 44, the carrier 36 is moved forward and moved onto the mold mounting portion 11, and then the rod of the hydraulic cylinder 17 is extended. When the movable table 13 is moved rightward to switch to the second position, the mold placing portion 1 which has been at the standby position until then is moved.
2 is switched to the replacement position in front of the mold mounting section 9.

Next, the motor 53 is connected to the mold 10 via the hot water supply hose 53 and the hot water return hose 54 via the passages 55 to 60 and the four flexible hoses 61 to 64 in the carrier 35. 50 is driven to move the chain 36 rearward, and the mold 1 is
While pressing 0, the mold 10 is transported to the mold mounting section 9, and thereafter, the carrier 35 is held at the transport end position and
And the heating device 40 are connected, and thereafter, injection molding is performed in the same manner as described above, with the female mold and the male mold of the mold 10 being fixed to the mold fixing plates 2 and 3 respectively.

As described above, the mold 10 can be exchanged while the mold 10 and the heating device 40 are connected, and the mold 10 and the heating device 40 are connected even after the mold 10 is carried into the mold mounting portion 9. Since the state can be maintained, the temperature of the mold 10 can be appropriately adjusted. Further, the hot water supply hose 53, the hot water return hose 54, and the hydraulic hose 65 are connected to the mold transfer device 30.
The hoses 53, 54, 65 are arranged in an orderly manner integrally with the chain 36, so that the hoses 53, 54 are not twisted, and the hoses 53, 54, 65 is not caused.

Since the heating device 40 and the hydraulic pressure supply device are attached to the movable base 13, the outer end of the chain 36 is connected to the heating device 40, and the hoses 53 and 54 are connected to the heating device 40.
The hydraulic hose 65 can also be directly connected to the hydraulic supply device. However, the heating device 40
Does not necessarily need to be attached to the moving table 13, for example, may be installed on the floor below the moving table 13. In this case, the hose 5 is used to switch the position of the moving table 13.
It is necessary to set the outer end portions of 3, 54, 65 longer. Then, the outer end of the chain 36 is
It is desirable to support it on a fixed portion such as a fixed stay.

Next, a modified example of the mold transfer device will be described. As shown in FIG. 9, at a position corresponding to the outer end of the guide member 34, the movable base 13 is provided with a guide member 70 having a curved T groove, and the chain 36A is guided by the curved T groove. The movable base 13 is provided with an inverted hydraulic cylinder 71, and a lower end of a rod 72 has a pair of sprockets 73 engaged with the rollers 48 on both sides of the chain 36A. Are rotatably provided, and the chain 36A is engaged with the pair of sprockets 73 and is turned upward in a U-shape.
The outer end of the chain A is connected to a connecting member 74 fixed to the cylinder body of the hydraulic cylinder 71 via a bolt member 75, and the hose 53, which extends from the outer end of the chain 36A,
The outer end of 54 is connected to the heating device 40. The chain 36A includes a small U-shaped link plate 76 and a large U-shaped link plate.
A hose guide passage is formed outside the small U-shaped link plate 76 and inside the large U-shaped link plate 77, and the hose 53 is provided in the hose guide passage. , 54 are guided, and, for example, a signal line connected to a temperature sensor or the like provided on the mold 10 is guided to a signal line guiding passage inside the small U-shaped link plate 76. still,
The U-shaped part of the large U-shaped link plate 77 is
Corresponds to a U-shaped restricting portion for restricting the position so as not to come off the chain 36A.

When the rod 72 of the hydraulic cylinder 71 is extended, the pair of sprockets 73 descends while rotating, so that the chain 36A is pulled back forward as shown by a chain line, and the mold 10 and the carrier 35 are connected to each other. Is driven to move forward, and when the rod 72 of the hydraulic cylinder 71 is retracted, the mold 10 and the carrier 35 are driven to move rearward, contrary to the above. In this carrier 35, a hydraulic cylinder 45 for swinging and driving the engagement arm 43 is provided.
Is vertically attached to the upper end of the carrier 35, and is configured to drive the base end of the engagement arm 43 up and down by the rod. However, the hydraulic cylinder 45 may be provided on the carrier 35 as in the above embodiment. The carrier 35
Confluence passages and branch passages to be formed are not shown.
Is the same as that of the above embodiment.

Next, a mold changing apparatus according to another embodiment will be described. As shown in FIG. 10, one mold placing portion 81 is provided on each of a plurality of mold transporting carts 80, and the mold placing portion 81 has the same configuration as the mold placing portions 11 and 12. The roller conveyors 20, 21, the guide member 34, the carrier 35, the chain 36 with rollers, the sprocket 41, the sprocket box 42, the motor 50, the hoses 53, 54 and the like are provided. ,
In addition, a plurality of self-propelled support wheels and a pair of self-propelled drive wheels are provided on the mold carrier 80 so as to be self-propelled along rails or on the floor. Note that the same reference numerals are given to the same components as those in the above-described embodiment, and description thereof will be omitted. However, a water storage tank is provided in each of the mold transport vehicles 80 as necessary, and a power supply cable is appropriately connected to the heating device of the mold transport vehicle 80 at the standby position and the replacement position.

In FIG. 10, the left die transporting cart 80
The upper mold 10 is in a standby state while being heated. After the used mold 10 is unloaded from the mold mounting section 9 onto the right mold carrier 80, the right mold carrier 80 is removed. For example, the self-propelled retreat to the right, and then the left-hand standby mold transporting trolley 80 is moved to the exchange position on the front side of the mold mounting unit 9 and stopped there. The mold 10 is carried into the mold mounting portion 9 while being connected to the heating device, and the mold carrier 80 is kept stopped during the injection molding. With this configuration, since each mold transporting cart 80 can be shared by a plurality of injection molding machines 1, the equipment is economically advantageous.

The engaging hole 43a of the engaging arm 43
Instead, a pin may be fitted to the tip of the engagement arm 43 and the engagement portion 44 of the mold 10. The roller 38 of the carrier 35 can be omitted.
The configuration of 5 can take various forms. Instead of the U-shaped link plates of the chains 36, 36A, hoses 53,
The hoses 53 and 54 may be connected to the pins and links of the chain via a continuously integrated or a plurality of metal or synthetic resin fasteners attached to the 54. Alternatively, instead of the U-shaped link plate or the fastener, a hose may be connected to the chain with a wire or a wire hook member, or the hose may be integrally fixed to the chain with an adhesive tape or the like. The hose may be connected to the chain by some means. Note that the injection molding machine is not limited to a horizontal injection molding machine, and it is needless to say that the mold exchanging device of the embodiment can be applied to a vertical injection molding machine. In the above embodiment, the roller conveyors 20, 21, 23, 24 and the like are provided for transferring the mold 10, but instead of these, a low friction sliding portion is provided, and the sliding portion is provided on the sliding portion. May be transferred by sliding the mold 10 directly, or the mold 10 may be transferred together with the support plate in a state where the mold 10 is placed on a support plate slidable on the sliding portion. You may comprise so that it may transfer.

[Brief description of the drawings]

FIG. 1 is a plan view of a main part of an injection molding machine and a mold changing apparatus according to an embodiment of the present invention .

FIG. 2 is a plan view of a part of the injection molding machine of FIG. 1 and a mold changing device.

FIG. 3 is a sectional view taken along line 3-3 of FIG. 1;

FIG. 4 is a longitudinal sectional view of a main part of a carrier and a mold.

FIG. 5 is a longitudinal sectional view of a guide rail, a chain with rollers, and a hose.

FIG. 6 is a perspective view of a mold, a carrier, a chain, and a part of a hose.

FIG. 7 is a longitudinal sectional view of a main part of a sprocket, a chain, a moving base, and the like.

FIG. 8 is a perspective view of a passage formed in the carrier.

FIG. 9 is a longitudinal sectional view of a mold transfer device according to a modification.

FIG. 10 is a plan view of a main part of an injection molding machine and a mold changing apparatus according to another embodiment.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Injection molding machine 2, 3 Die fixing board 9 Die mounting part 10 Die 11, 12 Die mounting part 13 Moving table 20, 21 Roller conveyor 22 Idling roller 30 Die transfer device 31 T groove (guide groove) 34) guide member 35 carrier 36, 36A chain with roller 40 heating device 41 sprocket 43 engaging arm 43a engaging hole 44 engaging portion 49 hose guide passage 50 motor 53 hot water supply hose (flexible hose) 54 hot water Return hose (flexible hose) 55,58 Merging passage 56,57,59,60 Branch passage 61-64 Flexible hose 71 Hydraulic cylinder 73 Sprocket 80 Moving trolley 81 Mold mounting part

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B29C 45/00-45/74 B29C 33/30

Claims (7)

(57) [Claims] 1. A mold mounting portion between a pair of mold fixing plates of an injection molding machine, and two mold mounting portions movably arranged in a mold clamping direction on a front side or a rear side of the injection molding machine. In a mold exchanging apparatus for exchanging a mold with a movable table having a, a roller conveyor for supporting a mold so as to be movable in a substantially horizontal direction is provided on each of the mold mounting portions, and a mold fixing plate is provided on the mold fixing plate. A plurality of roller members for movably supporting the mold in a substantially horizontal direction at the same level as the roller conveyor; providing a guide member extending in the mold transfer direction on each of the mold mounting portions; and a guide formed on the guide member. A groove, a carrier movable along the guide member, an engagement member provided on the carrier to be pushed and pulled into an engagement portion of a mold, and introduced into the guide groove from an outer end of the guide groove. And a chain member with a roller, one end of which is connected to the carrier. The mold transfer device and a drive means for advancing and retracting drive the chain member Te provided, one end to the heating device for heating the mold is connected 2
The flexible hose of the present and disposed along the chain member, the interior of the carrier, and two converging passage, they merge
Forming two branch passages each branching from the passage,
Connect the other ends of two flexible hoses to two merging passages respectively
And two branch passages branched from each merged passage
To the female and male molds via flexible hoses
A mold exchanging apparatus for an injection molding machine, wherein the mold can be exchanged while the mold and the heating device are connected via the six flexible hoses. 2. The link plate of the chain member is formed of a U-shaped link plate having an inverted U-shaped cross section, and the flexible hose is guided in a hose guide passage inside the U-shaped link plate. The mold changing device for an injection molding machine according to claim 1, wherein: 3. The chain member according to claim 1, wherein the chain member includes a plurality of U-shaped restricting portions at predetermined intervals for restricting the position of the flexible hose so as to extend along the chain member. Mold changing device of injection molding machine. 4. The two flexible hoses extending along the chain member include a flexible hose for supplying hot water and a flexible hose for returning hot water. Claim 1
3. A mold changing device for an injection molding machine according to claim 1. 5. A mold exchanging apparatus for carrying a mold in and out of a movable cart having a mold mounting portion on one surface with respect to a mold mounting portion between a pair of mold fixing plates of an injection molding machine. A guide member having a mold transfer path extending substantially horizontally from the mold mounting section to the mold mounting section of the movable carriage at the exchange position, and having a guide groove extending in the mold transfer direction in the mold transfer path; Is provided, a carrier movable along the guide member is provided, the carrier is provided with an engaging member that is pushably pulled into the engaging portion of the mold, and is introduced into the guide groove from the outer end of the guide groove. A chain member with a roller whose forward end is connected to the carrier is provided, and driving means for driving the chain member forward and backward at the outer end side of the guide groove is provided, and one end is connected to a heating device for heating the mold. Done 2
The flexible hose of the present and disposed along the chain member, the interior of the carrier, and two converging passage, they merge
Forming two branch passages each branching from the passage,
Connect the other ends of two flexible hoses to two merging passages respectively
And two branch passages branched from each merged passage
To the female and male molds via flexible hoses
A mold for an injection molding machine, wherein the mold can be carried in and out of a mold mounting portion while the mold and the heating device are connected via the six flexible hoses. Exchange equipment. 6. The mold changing device for an injection molding machine according to claim 1, wherein said heating device is attached to a movable table. 7. The mold changing device for an injection molding machine according to claim 5 , wherein said heating device is attached to a movable carriage.