WO1987002306A1

WO1987002306A1 - Automatic mold replacing method and apparatus therefor

Info

Publication number: WO1987002306A1
Application number: PCT/JP1986/000528
Authority: WO
Inventors: Kikuo Watanabe; Seiji Yamazaki; Masaki Muranaka
Original assignee: Fanuc Ltd
Priority date: 1985-10-18
Filing date: 1986-10-17
Publication date: 1987-04-23
Also published as: JPS6292819A

Abstract

An automatic mold replacing method and apparatus therefor which makes it possible to replace various molds rapidly, reliably and easily. Molds (30) whose outer diameters are substantially the same are assembled and put on a mold supporting stage (51) of a turn table (50), and the turn table is then rotated so that the desired mold is faced to a mold mounting portion (21). The mold is then engaged with a conveyor means (60) and transferred to the mold mounting portion. The upper and lower edge portions of the mold are urged and engaged to the corresponding mold mounting portion by a mold clamping means (70) that faces the mold. After the use of the mold, the mold is released from the urging engagement with the mold mounting portion and the conveyor means is driven to transfer the mold into the die supporting stage.

Description

Details

Technical Field The present invention relates to a method for automatically exchanging a mold and a device therefor.

Background technology.

In order to streamline the injection molding system in plastic molding and other processes, and to increase the automation and labor saving, it is necessary to improve the control of the molding machine itself. In addition, it must be rationalized as a total system including peripheral devices. One of the ways is to automatically change the molds, but the conventional automatic mold changer is a mold storage that uses an automatic warehouse. A transport unit using an automatic guided vehicle or an overhead traveling crane, and a control unit that controls these transport units, and a mold from the injection molding machine After removing the mold, transporting the mold to the mold stock section by the transfer device, storing it in the mold stock section, and then transferring the new mold to the mold stock section It was removed from the machine, transported to an injection molding machine by a transport device, and mounted. Such systems have become larger and more costly, and have generally not been widely adopted. In addition, the external dimensions of the mold to be mounted on the injection molding machine are various, and the replacement of various molds can be performed in a simple manner from installation to removal of the mold to the injection molding machine. It was difficult to be unmanned.

Disclosure of the invention

The present invention makes it possible to quickly and surely and easily replace various molds. The purpose of the present invention is to provide an automatic mold changing method and an apparatus therefor.

In order to achieve the above-mentioned object, the present invention has a rotary tape provided with a plurality of mold mounting portions arranged on a side of a mold-mold mounting portion of an injection molding machine. A mold changing machine, a mold whose outer dimensions are substantially the same in the joined state, and a mold carrier for carrying the mold in and out of the mold mounting part to the mold mounting part of the injection molding machine. It comprises a feeding means, a roller provided below the movable plate and the fixed platen of the injection molding machine, and a mold pump means provided above and below the movable plate and the fixed plate.

As described above, according to the present invention, the dies provided so that the outer dimensions are substantially the same as one another are joined to each other, and the dies are placed on the die mounting portions of the rotating table. The mold is placed, and the rotary table is turned and moved so that a required mold faces the mold mounting section. The transfer device is engaged with the mold to face the mold mounting section. The upper and lower sides of the fixed side mold and the movable side mold of the mold are opposed to the both edges, and the mold is clamped by mold clamping means. After the die is used, the die is released from the press engagement between the die and the die mounting part. Then, after the die is used, the transfer device is driven to drive the die mounting part. Since the dies are loaded into the mounting part, the dies transferred to the die mounting part always maintain the positional relationship suitable for mounting to the mounting part. The mold can be mounted and removed simply by pressing and engaging the mold by means of the mold clamp and releasing it from a direction that does not hinder mold transport. Die exchange can be performed quickly, reliably and easily. Brief description of the drawings

Fig. 1 is a partial cross-sectional side view showing an automatic mold changer for an injection molding machine for carrying out an embodiment of the present invention, Fig. 2 is a plan view showing a rotating table, Fig. 3 is a partially enlarged side view showing the interlocking mechanism between the rotating shaft and the mold shaft, and Fig. 4 is a partial cross-sectional end view of the interlocking system shown in Fig. 3. FIG. 5 is a partially enlarged cross-sectional view showing a chain connecting tool, FIG. 6 is a partially enlarged cross-sectional side view showing a connecting means, and FIG. 7 is a partially enlarged cross-sectional view of a mold clamping device. A side view, FIG. 8 is a partially enlarged front view of the mold clamping device, and FIG. 9 is a partial view for explaining the operation of the transfer device.

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Fig. 1 to Fig. 8 show an automatic mold changing machine for an injection molding machine for implementing the method of automatic mold changing according to an embodiment of the present invention. The mold changing machine 10 is arranged on the side of the fixed platen 2 and the movable platen 23 of the mold clamping unit 2 of the injection molding machine 20, that is, the injection molding machine 20 ′, The rotating table device 40 provided with the rotating table 50 and the metal 30 (in this embodiment, four dies) on the table 50 are directed toward the die mounting portion 21. And a mold clamping device 70 for attaching the mold 30 to the mounting portion 21 in a detachable manner, and a carrying device 60 for carrying out and carrying in the opposite direction. It is composed of

Each mold 30 is composed of a fixed mold 31 and a movable mold 32, and the outer dimensions of the joined molds are between the molds. The distance between the outer surfaces of the fixed-side and movable-side dies 31 and 32 is substantially equal to each other. The fixed platen 22 and the movable platen 23 when the molds are attached and removed in the mold touch state It is set slightly smaller than the distance. For this reason, various molds were manufactured by the new parent with the same outer dimensions, and in the case of existing molds, for example, they protruded outward from the main body of the mold 30. A dimension adjusting plate (not shown) is joined and fixed to the end of the mold mounting portion, that is, the end surface of the large diameter portion 31a, 32a on the mounting surface side.

On the upper surface of the rotary table 50, a plurality of mold mounting portions each having a circumferential configuration are provided, and in this embodiment, as shown in FIG. 2, an octagonal table in plan view is provided. The table 50 has four mold mounting portions 51 arranged at an angular interval of 90 degrees with respect to a rotation shaft 50a of the tape described later. Each mounting portion 51 is provided with a pair of roller rows 52, 52 that support the mold 30 in the contacted and joined state in a sliding manner and extend in parallel with each other in the table radial direction. A round bar-shaped guide member 53 immediately adjacent to the outer side of the roller row 52 is fixed on the upper surface of the table 50 by a support frame 54 with a right-angled triangle (see FIG. 1)) and form a mold transport path in cooperation with the roller row 52. The outer end portion of the guide member 53 is bent outward to facilitate the loading of the mold 30 into the transport path ぺ. Further, an L-shaped inner stopper 55 (see FIG. 2) in plan view is fixed on the upper surface of the rotary table 50 at the inner end position of the mold transfer path, and the mold is fixed. The limit switch S5, which detects the contact of the mold 30 with the stopper 55, is provided to prevent the deviation of the mold 30 from the predetermined mounting position. Re --

ing . The rotating table 50 is provided with a guide between the outermost roller on one of the pair of roller rows 52, 52 and the roller adjacent thereto. A guide hole 56 is bored, and a mold stopper 58 described later fits the guide hole 56 in a sliding position. Although only one half of the rotating table is shown in detail in FIG. 2, the other half is also configured in a circumferential manner with the half.

The machine frame 80 is an assembly of various types of square pipes and the like, and the inner part of the machine frame 80 forms a base unit 41 of the rotating tape 50 constructed as described above. ing . A plurality of thrust ball bearings 41a for supporting the table 50 in the height direction are provided on the upper surface of the peripheral portion of the base 41, and at the center thereof. Is a radial bearing that supports the rotating shaft 50a of the table 50, for example, an oilless bearing. Each of the bearings 41b is provided, and the table 50 is Even when the mold 30 of an equivalent weight is mounted, it can be smoothly rotated. The rotating shaft 50a of the table 50 has a sprocket 5Ob fixed to its lower end and a sprocket fixed to the output shaft of the motor 42. The motor 43 is connected to a module 42 via a chain 43 stretched between the motors 42a, and is driven by the motor. As a means for detecting the rotational position of the rotary table 50, for example, four projections (one of which are provided on the lower surface of the table 50) whose radial positions are different from each other. Are indicated by D1) at an angular interval of 90 degrees, and the upper surface of the base 41 is located on the same radial axis.

Four limit switches, each actuated by one projection S 1 to S 4 are arranged. Further, a guide member 44 and an air cylinder 45 are fixedly provided on one side of the machine frame 80 on the lower surface of the rotary table 50 so as to be aligned with the fc conical hole 57. A rotary stopper 46 having a conical end 46 a is fixed to a cylinder rod 45 a of the air cylinder 45 and the air cylinder is fixed. The guide member 44 is driven to move forward and backward by sliding in the guide hole 44 a of the guide member 44.

Further, as shown in FIG. 3 and FIG. 4, an interlocking mechanism is provided between the rotation shaft 46 and the mold shaft 58. Immediately, a link 47 'is rotatably connected to the other end of the link 47, one end of which is rotatably connected to the lower end of the mold stopper 58. Also, a tension spring 48 is connected to the outer end of the link 47 ′, and the mold spring 58 is moved upward through the link 47. And is held in a state of being fitted into the guide hole 56. The link 47 ′ is pivotally supported at its center by a shaft 49 fixedly mounted on a rotary tape 50, and the inner end of the link 47 ′ is connected to the rotary shaft 4. When the rotary storage collar 46 protrudes into the forward / backward path of FIG. 6 and the rotary storage collar 46 is inserted into the hole 57, the link 47 ′ is indicated by a dashed line in FIG. In this way, the inner end comes into contact with the peripheral surface of the rotary stopper collar 46 and is rotated counterclockwise to lower the mold stopper 58 via the link 47. To be moved.

The transfer device 60 is arranged in the upper layer of the machine frame 80, and is carried out by a chain or a feed screw. For example, in the case of the chain method, the frame is fixed to the upper end of one side frame of the machine frame 80. Motor 6 1, a sprocket 6 1 a fixed to the motor shaft of the motor 6 1, and a driven sprocket 6 provided at the upper end of the other side frame. Between steps 1b, a step 6c is stretched. Then, for example, a spline connection is applied to a guide rail 62 extending between the side frames of the machine frame 80 below the chain 61c and the traveling body is connected to the guide rail 62. 63 is non-rotatably and slidably supported by the rail, and the traveling body 63 is connected to the chain 61c via connecting means 64. .

The rear end of the transport means 66 having an air cylinder 65 is fixed to the traveling body 63 by a port, and a pair of mold catching means 67 is mounted on the front end of the transport means 66. It is supported by the rotation itself via the pin 66a. The rear end of the air cylinder 65 is pivotally supported via a hinge 66 b on a middle protruding wall of the conveyance means 66, and the cylinder rod 6 The tip of 5 a is pivotally connected to a pin 67 a that couples a pair of mold catching means 67, and each mold catching means 67 is provided with a cutout 67 b are formed, and the fixed side and the movable side of the mold 30 are provided on the large-diameter portions 31a and 32a of the molds 3 and 32, respectively, so as to protrude from the side surface of the transfer device 60 side. -A pair of engaging arms (one of which is indicated by reference numeral 31a ') is engaged and disengaged independently.

As shown in FIG. 5, both ends of the chain 61c are attached to the inner peripheral surface of the connecting member 61f in a forward and backward manner, and the fc rods 61d and 61e are attached. After the rods 61 d 61 e are moved forward and backward to adjust the tension of the chain 61 c, the nuts 61 19, 6 After 1 h, the adjustment position is fixed. It has become so . Then, as shown in FIG. 6, in the middle of the chain 61c, a connecting device that is integrally formed with the chain 61c and that connects the connecting means is used. The rod member 64a is interposed, and the end member 64b is slidably fitted to the front end of the rod member 64a, and is fitted to the engraved step of the end member 64b. One end of the hollow cylindrical member 64c is fixedly attached thereto, and a rod member 64a is slidably fitted into an insertion hole formed in the closed end wall. Then, the annular panel receiving member 64 d housed in the hollow cylindrical member 64 c is fitted and fixed to the rod member 64 a by welding or the like, and is also connected to the end member 64 b. The coil springs 6 4 e, 64 f interposed between the panel receiving member 64 d and between the member 64 d and the closed end wall of the cylindrical member 64 c respectively constitute the mouth member 64. It is loosely fitted in a. Further, a connecting plate 64 g is protruded from the peripheral wall of the cylindrical member 64 b so that the connecting means 64 is entirely connected to the traveling body 63 via the connecting plate 649. It is fixed with the nut.

As shown in FIG. 7 and FIG. 8, the mold clamping device 70 is provided on each of the opposed end faces of the fixed platen 22 and the movable platen 23 of the injection molding machine 20, respectively. It consists of four clamp devices that can face the large-diameter portions 31a and 32a of the fixed-side and movable-side molds 31 and 32, respectively. Since the configuration is substantially circumferential, a clamp device 70 ′ disposed opposite to the lower edge of the movable plate 23 will be described. The clamp device 70 ′ is provided with a roller row. 7 mm, and the roller row 71 is connected to the roller row 52 and the roller row 52 of the mold mounting portion 5. Adjustment In cooperation with the row of rollers 24 (Fig. 1) provided in the injection molding machine 20, the mold 30 is supported in the vertical direction when the mold is carried in and out of the mold mounting part 21. You Numeral 72 denotes a mold supporting member having a hole for supporting one end of the shaft of each roller forming the row 71, and the movable platen is formed by the ports 72a and 72a. The mold support member 72 is fixed to the mold support member 23, and has an L-shaped cross-section mold support member 72 'having a hole for supporting the other end of the roller shaft. A flat plate 72 介在 interposed between the mold supporting members 72, 72 ′ and a guide block 73 are integrally fixed by a fixed port 73 a. Furthermore, the mold supporting member 72 ′ and a flat plate

Air cylinders 7 4 and 7 4 are fixed to the bottom of 7 2 "in alignment with the guide holes 7 3 b and 7 3 b of the guide block 73. Then, the clamp member 76 is turned around the shaft 75a of the connecting member 75 via the connecting member 75 fixed to the upper end of each cylinder rod 74a. The guide hole: 73b slides through the guide hole: 73b with a certain amount of play, and the upper end of the inclined surface on the movable plate 23 side. 6 -a is screwed to the lower end of the large-diameter portion 32a of the movable mold 32, opposite to the end of the movable platen, which is related to the inclination of the ぴ -shaped engaging member 32b. The clamp device 70 'is arranged opposite to the lower edge portion of the fixed plate, and the movable plate 22 and the movable plate 22 are arranged. Clamps located opposite each upper edge of the fixed platen The device does not have a row of rollers 71. In Fig. 8, reference numerals 23a and 23a are stoppers protruding from the surface of the movable platen 23, and the unloading end position. That is, the mold 30 is placed at the mold mounting position. o 5

Keep contact.

In addition, the stop plate is also provided on the side of the fixed plate 22 in a circumferential manner, and a limit switch for detecting the contact of the mold 30 with the stop plate. A switch (not shown) is attached. ₅ below, we explain by that mold automatic exchange method in an embodiment of the present invention based on the operation of the automatic switch 1 0 for an injection molding machine having the above configuration. First, the mold 30 has the fixed mold 31 and the movable mold 0 32 joined to each other on the mold mounting portion 5 of the rotary table 50 of the mold exchanging machine 10. , And are appropriately placed by means of transportation (not shown). Next, the mold clamping mechanism is driven to move the movable platen 23 to the mold, and moved to the replacement position to position the movable platen 23. Next, the required mold 3 is set prior to the start of the injection molding cycle. 0 should be mounted on the injection molding machine 20 with the mold removed, and the motor 42 is dried once by the control device 5 (not shown). Accordingly, the rotating shaft 50a of the rotating table 50 is driven to rotate via the sprocket 42a, the chain 43 and the sprocket 50b. Then, the rotating tape 50 supported by the base 41 via the ball bearing 41a smoothly rotates, and when the rotating table 50 rotates, Each time any one of the mold mounting sections 51 faces the mold mounting section 21 of the injection molding machine 20, the limit switch S1 to S4 is attached to the corresponding mounting section. Table position table from corresponding Output Ru is supplied to the controller. By its control device, when the desired mold 3 0 is found on the basis of the output this is judged that it faces the attachment portion 2 1, 'Motor Stop the rotation of 42 and operate the air cylinder 45 as well. With the operation of the cylinder, the rotary dropper 46 integral with the cylinder rod 45 a moves upward in the guide hole 44 a of the guide member 44, and rotates. The table 50 is fitted into the conical hole 57 of the table 50, and the table 50 is securely locked at this rotation position. Then, the inner end of the link 4 7 ′ that protrudes into the advance / retreat path of the stopper 46 due to the upward movement of the rotating stopper collar 46 is pushed up. The link 47 'rotates counterclockwise in FIG. 3, and the die stopper connected to the outer end of the link 47' via the link 47 is provided. 5 is positioned by a two-dot chain line in FIG. 3 against the spring force of the tension spring 48, ie, the row of rollers 5 The mold 30 below the surface 2 The guide hole 56 is moved down to a position where it does not interfere with the mold, and as a result, the mold can be carried out.

Next, the air cylinder 65 of the transfer means 66 at the position shown in Fig. 6 is driven by the control device, and the cylinder rod 65a moves forward. Then, the pair of mold catching steps 67 rotate counterclockwise around the pin 66 a, and each of the means 67 b is engaged with the engaging arm of the mold 30 (only one of the engaging arms). And the same applies to the following.) Then, the motor 61 is driven to rotate and stretched between the sprockets 61a and 61b. The chain 61 c moves around, and the traveling body 63 connected to the chain 61 G via the connecting means 64 is directed toward the mold mounting portion 21. At the start of traveling, a rod member 64a and a panel receiving member provided so as to be able to move integrally with the chain 61c. Only 6 d starts moving immediately, while meanwhile, the end member 6 4 b integral with the traveling body 63 engaged with the mold 30 via the mold capturing means 67. The members & 4c, etc. try to stay stationary for a while, but the spring 64e interposed between the rod member 64a side and the cylindrical member 64c- side Compressed. As a result, the pulling impact force applied to the chain 61G at the start of traveling is absorbed by this relative motion, and the chain 61c cannot be forced. Is not added. Thereafter, when the compression of the spring 64 e progresses as the chain 61 c moves, the rod member 64 a through the spring 64 e is connected to the rod member 64 a side. The cylindrical member 64c side is substantially connected to the cylindrical member 64c, and the cylindrical member 64c also starts moving in the circumferential direction with the traveling direction of the traveling body 633. 9. The traveling body 63 integrated with the connecting means 64 via the connecting means 64 and thus the mold 30 engaged with the traveling body 63 via the conveying means 66 and the mold capturing means 67. The transport is opened. After that, when the chain 61c, the connecting means 64, and the traveling body 63 move to the steady state, the two coil springs 64e and 64f are connected in equilibrium. The structural members of the means 64 have a positional relationship almost equal to that of FIG.

Then, the mold 30 is guided by the guide member 53 along with the traveling of the traveling body 63, and moves on the roller row 52, and then on the side of the injection molding machine 20 ′. The roller is slid on the roller row 24 of the section and further on the roller row 71 of the mold clamping device 70, and is carried out to the mold mounting section 21. Then, when the mold 30 reaches the mold mounting position (FIG. 9), the dimensions of the mold are fixed plate 22 and movable plate. Since it is slightly smaller than the distance between 23, it is arranged close to the fixed platen 22 and the movable platen 23, and abuts the storage 23a provided on the mold mounting part 21. Then, a limit switch (not shown) attached to the storage hub 23a operates. When the unloading is stopped, the integral traveling body 63 and the integral end member 64b, the cylindrical member 64c, etc. are immediately attached to the mold 30 via the mold capturing means 67. Although the vehicle stops running, the chain 61c causes a time delay until it stops running due to the inertia of the motor 61 even if the motor 61 is stopped immediately. . However, even when the chain 61c travels during this time, the rod member 64a integrated with the chain 61c travels while compressing the spring 64e. Since the shock is absorbed, no excessive force is applied to the chain 61G. -When the control device receives the output signal from the limit switch, the air cylinder 74 of the mold clamping device 70 is actuated. Let it go. A clamp member 76 connected to the rod 74a via a connector 75 '''as the cylinder mouth pad 74a of the air cylinder 74 advances. Slides inside the guide hole 73 b of the guide block 73, and the wedge-shaped engaging portion of the mold 30 (partly at 32 b) The same applies to the following.)). As a result, the large-diameter portions 31a and 31a of the fixed mold 31 and the movable mold 32 are removed.

3 2 a is supported in the height direction by the roller row 71 of the clamp device 70, and is also gripped by the clamp member 76 so that the clamp member 7 is held. 6 Work between wedges 3 2 b Due to the action, a force is applied to press these large-diameter portions 3 la and 32 a against the fixed platen 2 and the movable platen 23, and the fixed-side mold 31 and the movable-side mold 3 2 are pressed. Are fixed to the fixed board 22 and the fixed board 23, respectively. Next, the air cylinder 65 of the transfer means 66 is driven backward, and the die catching means 67 is pinned with the retraction of the cylinder rod 65a. Rotating clockwise around 6 a, the notch 6 7 b separates from the engaging arm portion 31 a ′ of the mold 30 (FIG. 9), and the injection molding machine is used. 20 Retracted position that does not interfere with mold closing and mold opening movement.

Thereafter, when the injection molding cycle of the injection molding machine 20 using the mold 30 is completed, the mold clamping device is set to the mold closing position, and the eccentric cylinder 65 is moved forward. Drive to engage the mold 30

3 a ′ is engaged with the mold capturing means 67. Next, each air cylinder 74 of the mold clamping device 70 is moved backward, and the clamp member 76 integrated with the cylinder rod 74a is pressed. The inside of the guide hole 73b of the lock 73 retracts, and the inclined surface 76a of the tip is separated from the opposite inclined surface of the wedge-shaped "engaging member 32b of the mold 30". Then, the mold 30 is removed from the mold mounting portion 21. Then, the motor 61 is driven in reverse, and the chain 61c driven by the motor 61 is driven. The mold 30 connected via the connecting means 64, the traveling body 63, the conveying means 66 and the mold catching means 67 is connected to the mold mounting section 51 of the tape 50. At the start of the transfer, as described above, the tensile impact applied to the connecting means 64 is absorbed by the spring 64 f of the means 64. There is a short shot in the chain 1c. There is no addition. Driven by the transfer device 60, the mold 30 is turned into a row of rollers 71 of the mold clamping apparatus 70, a row of rollers 24 on the side of the injection molding machine 20, Then, it is transferred on the roller row 52 of the transport path, reaches the mold mounting portion 5 Ί, contacts the inner storage 55, and is attached to the storage 55. When the limit switch is operated, the operation of the motor 61 is stopped. The impact applied to the connecting means 64 at the end of the transfer is absorbed by the spring 64f of the means 64, so that an unreasonable force is applied to the chain 61c. I will not join. Then, in response to the carry-in end detection output from the limit switch, the air cylinder 45 is driven backward, and the cylinder rod 45 a And the rotating rotary unit 46 moves downward in the guide hole 44 a of the guide member 44 and detaches from the conical hole 57 of the rotary table 50. However, at the same time that the mold can be rotated for the next selection of the mold 30, the inner end of the rotating tongue 46 is moved with the downward movement of the rotating tongue 46. contact to have been re-emission click 4 7 'is opened in tensile Ri spline Li in g 4 8 Ba ^Ne: · force by Ri rotates at a total direction in FIG. 3, the said re down The mold storage collar 58 connected to the connector 47 via the link 47 is urged by the pulling spring 48 to provide a low Row 5 2 Protrudes above the top surface The mold 30 is brought into contact with the outside of the mold 30 carried into the mold placing portion 51 to prevent the mold 30 from deviating. As a result, the automatic replacement work of the mold 30 is completed.

In the above embodiment, the automatic mold exchange in the injection molding machine has been described. However, the present invention is not limited to this. Applicable

Claims

•-17-Scope of billing

A mold changer is arranged on the side of the mold mounting part of the injection molding machine. The rotation of the mold changer—the outer dimensions of the mold changer are joined to a plurality of mold placement parts on the tail. The molds which are substantially the same are placed on each other, and the rotary table is rotated to select a required mold, and the mold placement on which the selected molds are placed is placed. Is positioned at the position facing the above-mentioned mold mounting section, the mold clamping mechanism is driven to position the movable platen at the mold-exchange position, and the mold transport means is driven to drive the selected mold. The mold was inserted between the fixed board and the movable board by stimulating the rollers provided in the "F" section of the fixed board and the work board, and placed at the bottom of the fixed board and the movable board at the t section and below. Activate the mold clamping means to fix the mold on the fixed platen or movable platen. If the mold is to be injection molded or removed from the machine, operate the mold clamping means. Then, the dies are transferred to the die mounting part of the die changing machine emptied by the die transfer means. Fc Automatic die changing method. A rotating table having a plurality of mold mounting portions for arranging a mold which is the same as the above, a means for causing the rotating table to move to zero, and a required mold mounted thereon. Positioning means for positioning the mold stimulating section at a predetermined position facing the mold mounting section of the injection molding machine including the fixed board and the movable board from the side of the mold mounting section; An opening provided at a lower portion of the panel and a lower portion of the movable plate for slidably supporting a mold, and the required mold is cooperated with the roller to form the required mold. -is-a mold carrying means for carrying between the mold placing section and the mold attaching section, and arranged at an upper portion and a lower portion of the fixed plate and at an upper portion and a lower portion of the movable plate, respectively. The conveyed mold is transferred to the mold mounting portion by the upper and lower edges of the mold.

5. A die automatic exchanging machine, comprising: die clamping means for removably fixing the die mounting portion in 5.

3. The upper_¾] mold cleaner means comprises: a wedge-shaped engaging portion fixed to the lower peripheral portion of the mold mounting portion side end of each of the molds; The tip has a slope that can engage with the part

10 Clamp members and the upper and lower parts of the fixed plate

A guide member fixed to the upper and lower portions of the movable platen, respectively, and formed with a hole through which a corresponding one of the clamp members I is slidably passed, and 3. The metal member according to claim 2, comprising a driving member for projecting the member through a notch hole to a position where the inclined surface of the tip of the member engages with the wedge-shaped engaging portion. Type automatic exchange

4. The positioning means has a fitting hole provided in the rotary table corresponding to each of the mold mounting portions, and a rotary stopper which can be freely removed from the fitting hole. Above the rotating

A locking means for locking the 20 bull, a mold holding position for preventing the mold from being transported between the mold stimulating section and the mold mounting section, and a mold transport are allowed. A mold stopper for selectively taking any of the mold settling positions to be set, and a spring for striking the mold stop to the mold holding position.

25g and the rotation of the rotating collar in the fitting hole. -19-

5 ο

A claim comprising a link mechanism driven by the rotary stopper to make the die stopper to close the die transfer position against the biasing force of the spring. Automatic mold changing machine as described in Paragraph 2 of Item 1.

5. The upper metal transfer means includes a drive source, a transmission means that reciprocates with the operation of the drive source, and a tool for removably engaging the mold and moving the mold. A transporting means and a spring connecting the transporting means to the transmission means? 3. The automatic die changing machine according to item 2, wherein the range of m is defined by steps.

06. The above-mentioned transmission means is a chain which is arranged to be reciprocally movable, and is arranged so as to be able to move integrally with the chain, and a panel receiving member is fixed.

¾ ^{: The} splicing means consists of two sprungs arranged on both sides of the spring receiving part ′, respectively. The automatic die changing machine according to claim 5, wherein the end is engaged with the spring receiving member, and the other end is engaged with the transfer means.

Five