JPH0733616U - Mold transfer device with clamp device - Google Patents

Abstract

(57) [Abstract] [Purpose] To simplify the mold replacement work of a molding machine equipped with a clamp device that clamps the flange part on the mold loading / unloading side. [Structure] T of the mold fixing plate 2 provided on the mold carrier 7
Guide member 23 having guide groove 24 connectable to groove 4
And a chain 26 movable forward and backward in the guide groove 24 and the T groove 4, and a clamp device 5A for clamping the flange portion 8a of the die 8, which is connected to the tip end portion of the chain 26 and is connected to the guide groove 24. And a clamp device 5A movable along the T groove 4, an electric motor 29 for driving the clamp device 5A forward and backward through the chain 26, and a first connecting the clamp device 5A and the mold 8 in a detachable manner. A connection mechanism, a second connection mechanism for connecting the clamp device 5A and the chain 26 in a detachable manner, and a hydraulic supply hose 61 for supplying hydraulic pressure to the clamp device 5A were provided on the mold fixing plate 2 side. .

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to a mold transfer device with a clamp device.

[0002]

[Prior art]

 Generally, as a mold exchanging device for a press molding machine, a movable mold carrier and a mold transferring device for transferring the mold on the mold carrier between the mold fixing plates are provided on the front side of the molding machine. The provided ones are widely adopted. The mold transfer device includes a guide member having a guide groove that can be connected to the T groove of the mold fixing plate, and a drive rope that is movable in the guide groove and that includes a chain or a belt-shaped drive belt. A carriage that can be engaged with and disengaged from the flange of the mold and that is connected to the tip of the drive cable and can move along the guide groove and the T groove; and a drive that drives the carriage back and forth through the drive cable. It is known to have a mechanism. On the other hand, the mold is fixed to the plate surface of the mold fixing plate by clamping a pair of flanges in the same direction as the loading and unloading direction with one or more clamp devices, respectively. When well fixed to the board surface, a pair of flange portions oriented in the direction orthogonal to the die loading / unloading direction may be clamped by one or a plurality of clamping devices, respectively.

[0003]

[Problems to be solved by the device]

 By the way, in the case where one or more clamp devices for respectively clamping a pair of flange parts in the direction orthogonal to the mold loading / unloading direction are provided, in order to prevent the clamp device from interfering with the mold during mold replacement. However, it is necessary to remove the clamp device on the loading / unloading side of the mold, and the clamp device is relatively heavy, which makes the work very complicated. An object of the present invention is to provide a mold transfer device with a clamp device that can simplify the mold replacement work of a molding machine equipped with a clamp device that clamps a flange portion on the mold loading / unloading side.

[0004]

[Means for Solving the Problems]

 A mold transfer device with a clamp device according to claim 1, wherein the mold transfer device transfers a mold between a mold accommodating portion between a mold fixing plate of a molding machine and a mold carrier. A guide member provided on the carriage having a guide groove that can be connected to the T groove of the mold fixing plate, a drive cable that can move forward and backward in the guide groove and the T groove, and to clamp the flange portion of the mold. And a driving device for driving the clamping device forward and backward through the drive rope, the clamp device being connected to the tip of the drive rope and movable along the guide groove and the T groove. And a first connecting mechanism for connecting the clamp device and the mold in a detachable manner.

Here, as in claim 2, a hydraulic supply hose for supplying hydraulic pressure to the clamp device may be held on the drive cable, or as in claim 3, the clamp device and the drive cable. It is also possible to provide a second connecting mechanism for connecting and disconnecting with each other and to provide a hydraulic pressure supply hose for supplying hydraulic pressure to the clamp device on the mold fixing plate side.

[0006]

[Operation and effect of the device]

 In the mold transfer device with the clamp device according to claim 1, in order to firmly and accurately fix the mold to the plate surface of the mold fixing plate, the flange portion on the mold loading / unloading side is clamped by the clamping device. However, since this clamp device is connected to the tip of the drive cable, when exchanging the mold, the drive device operates the drive cable with the clamp device and the mold connected via the first connection mechanism. By moving the clamp device forward and backward along the guide groove and the T-groove via the clamp device, the mold is prevented from interfering with the mold, and the mold is held between the mold fixing plate and the mold accommodating portion and the mold transfer carriage. It can be transferred over and over. In this way, when exchanging the mold, the mold and the clamp device can be moved integrally and the mold can be replaced, and the interference between the clamp device and the mold can be prevented, so the clamp device can be manually removed from the board surface. There is no need, and die replacement work can be greatly simplified.

Here, when the hydraulic supply hose for supplying hydraulic pressure to the clamp device is held by the drive cable as in claim 2, the pipe of the hydraulic supply system to the clamp device is connected. It is possible to replace the mold as it is, and the mold replacement work can be further simplified. According to a third aspect of the present invention, a second connecting mechanism is provided for connecting the clamp device and the drive cable in a detachable manner, and a hydraulic supply hose for supplying hydraulic pressure to the clamp device is provided on the mold fixing plate side. When it is provided, the clamp device and the drive cable can be disconnected from each other via the second connecting mechanism after the die replacement, and the moving efficiency of the die carrier truck can be improved.

[0008]

【Example】

 Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, the present invention is applied to a die transfer device of a press molding machine. As shown in FIGS. 1 and 2, the lower mold fixing plate 2 and the upper mold fixing plate (not shown) of the press molding machine 1 are vertically opposed to each other, and the upper mold fixing plate is shown. A pair of T-grooves 3 in the left-right direction and a pair of T-grooves 4 in the front-rear direction are formed on the plate surfaces 2a of both mold fixing plates 2 so that they can be moved up and down through an external drive mechanism. A pair of clamp devices 5 are provided in the four T-grooves 3 and 4 so as to face each other, and the mold 8 is disposed in the mold accommodating portion 13 between the mold fixing plates 2, It is firmly and accurately fixed to a predetermined position on the board surface 2a through eight clamp devices 5 provided on the fixed board 2, respectively.

On the front side of the press molding machine 1, a pair of front and rear transport rails 6 oriented in the left-right direction are provided, and a die transport carriage 7 is provided on the transport rail 6 so as to be movable in the left-right direction, and is transported. A pair of left and right first placing portions 10 and second placing portions 11 on which the die 8 can be placed are provided on the upper portion of the carriage 7, and the die 8 is placed on both of the placing portions 10 and 11. A plurality of left and right idler rollers 12 that can be mounted movably in the front-rear direction are provided, and a mold 8 is placed between the mold accommodating part 13 and the transport carriage 7 at the center of both mounting parts 10 and 11. There is provided a pair of left and right mold transfer devices 20 that can be transferred by. Incidentally, reference numeral 14 is an intermediate roller provided on the die fixing plate 2 side. Further, reference numeral 15 is a transfer roller for moving the mold 8 forward and backward on the board surface 2a, and the transfer roller 15 moves below the board surface 2a when the mold 8 is clamped.

Next, the mold transfer device 20 will be described. The mold transfer device 20 is a mold carry-in / carry-out part of the clamp device 5 fixed to the plate surface 2 a of the lower mold fixing plate 2. The pair of clamping devices 5A on the side is transferred together with the mold 8 onto the first mounting part 10, and the mold 8 on the second mounting part 11 and the clamping device 5A are transferred onto the mold fixing plate 2. Then, the mold is replaced with the pair of clamp devices 5A on the mold carry-in / out side. Since the left and right mold transfer devices 20 have the same structure, only the left mold transfer device 20 will be described.

As shown in FIGS. 1 to 4, a pair of intermediate guides 22 having inverted T-shaped guide grooves 21 communicating with the left and right T-grooves 4 are provided on the front end surface of the mold fixing plate 2 in the forward direction. A pair of left and right guide members 23 are provided on the first mounting portion 10 from the front end portion to the rear end portion of the transport carriage 7, and the left and right guide members 23 are provided on the first mounting portion 10 so as to project toward Inverted T-shaped guide grooves 24 that can communicate with each other are formed in the guide grooves 21 of the intermediate guides 22, and a pair of left and right storage cases 25 are provided on the front side of the transport vehicle 7. A chain 26 with rollers (which corresponds to a drive cable) 26 whose tip extends into the guide grooves 21 and 24 is housed therein. The left and right sprockets 27 are It is interlockingly coupled via a shaft member 28 facing the direction, and is synchronously driven by an electric motor 29 fixed to a side portion of the right housing case 25.

The tip ends of the left and right chains 26 are detachably connected to a pair of clamp devices 5A on the die loading / unloading side via a second connection mechanism 30, and the clamp devices 5A are connected to the first connection mechanism. It is releasably connected to the flange portion 8 a of the mold 8 via 31. As shown in FIGS. 3 and 4, the clamp device 5A includes a clamp body 40, a clamp lever 42 pivotally supported by the clamp body 40 via a shaft member 41, and a force point portion 42a of the clamp lever 42. It has a general structure including a hydraulic cylinder 43 for driving the clamp to the front and a spring member (not shown) for urging the clamp lever 42 toward the unclamp side. The T-shaped leg portion 40a is formed so as to be movably mounted in the groove 4 and the guide grooves 21 and 24. The clamp device 5 other than the clamp device 5A has the same structure except for the first connecting mechanism 31 and the second connecting mechanism 30. Therefore, detailed description thereof will be omitted.

The first connecting mechanism 31 will be described. On the upper surface of the flange portion 8 a of the mold 8, a pair of connecting members L-shaped in plan view are provided at positions on both sides of the action point portion 42 b of the clamp lever 42. 51 and 52 are fixed so that the engaging portions 51a and 52a are opposed to each other at a position in the vicinity of the end of the upper surface of the mold 8 and are fixed to the action point portion 42b of the clamp lever 42. A pair of engaging recesses 53, 54 are provided which are bored upward from the lower end surface, and in which the engaging parts 51a, 52a of the connecting members 51, 52 are engaged at the time of connection. Has been.

The height of the engaging recesses 53, 54 is slightly larger than the thickness of the engaging parts 51a, 52a, so that there is a margin when engaging. The clamp device 5A and the mold 8 are detachably connected to each other through the engaging portions 51a and 52a of the connecting members 51 and 52 and the engaging recesses 53 and 54. Explaining the second connecting mechanism 30, a connecting block 55 movable along the guide grooves 21 and 24 and the T groove 4 is provided at the tip of the chain 26 with rollers, and a central concave groove 55a of the connecting block 55 is provided. 4 is rotatably supported by a connecting lever 56 via a shaft member 57 oriented in the left-right direction between a connecting position shown by a solid line in FIG. 4 and a releasing position shown by a virtual line, and a tip of the connecting lever 56. A substantially T-shaped engaging portion 56a is formed in the portion, and an engaging groove 40b capable of engaging with the engaging portion 56a is formed in the front portion of the clamp body 40.

Next, the operation of the mold transfer device 20 will be described. When the mold 8 is replaced, first, the mold 8 set in the press molding machine 1 is transferred onto the transport carriage 7, so that the first mounting portion 10 of the transport carriage 7 is positioned on the front side of the press molding machine 1. Then, the guide groove 24 is made to communicate with the guide groove 21, and the chain 26 is paid out into the guide groove 21.24 to move the tip of the chain 26 with rollers to the T groove 4 side. At this time, since the clamp device 5A of the die transfer device 20 on the side of the first mounting portion 10 is set in the press molding machine 1, the tip portion of the chain with rollers 26 and the connecting block 55 are provided in the T groove 4. Only are transferred. Next, the connecting lever 56 is rotated to the connecting position to connect the tip of the chain 26 with rollers to the clamp device 5A, and the cylinder 43 is driven to use the crank lever 42 as a fulcrum and the crank member 42 as a fulcrum. The clamp device 5A and the mold 8 are connected by rotating to the position shown by the imaginary line in the figure and engaging the engaging portions 51a, 52a of the connecting members 51, 52 with the engaging recesses 53, 54. After removing the coupling 61 of the hydraulic pressure supply hose 60 that supplies the hydraulic pressure to the clamp device 5A from the clamp device 5A, the chain 26 with rollers is wound to mount the mold 8 together with the clamp device 5A on the first mounting portion 10. Transfer to.

Next, in order to transfer the die 8 to be used next time set on the second mounting portion 11 of the transport carriage 7 onto the board surface 2a of the press molding machine 1, the second mount of the transport carriage 7 is performed. The portion 11 is positioned on the front side of the press molding machine 1, the guide groove 24 is communicated with the guide groove 21, and the chain 26 with a roller is extended to clamp the mold 8 set on the second mounting portion 11. It is transferred onto the board surface 2a together with the device 5A. At this time, the clamp device 5A of the die transfer device 20 on the second mounting portion 11 side is connected to the tip of the chain 26 with rollers via the second connecting mechanism 30 in advance and the first connecting mechanism 31 is connected. It is connected to the mold 8 to be used next time via.

After exchanging the mold 8 in this way, the connecting lever 56 is rotated to the release position to release the connection between the chain 26 with rollers and the clamp device 5A, and then the chain 26 with rollers is wound up, The hydraulic supply hose 60 is connected to the clamp device 5A via a coupling 61 provided on the front side of the fixed platen 2. However, when exchanging the die 8 next time, the die 8 to be used next is set on the side of the first placing portion 10 and the die 8 used on the side of the second placing portion 11 is transferred. It will be. In this way, even when the four sides of the flange portion 8a of the mold 8 are clamped by the pair of clamp devices 5 and 5A respectively to enhance the mounting strength and the mounting accuracy of the mold 8 on the board surface 2a, the mold loading and unloading can be carried out. By exchanging the clamp device 5A on the side with the mold 8, it is not necessary to manually reattach the clamp device 5A, and the mold replacement work can be performed efficiently.

Next, another embodiment of the mold transfer device 20 will be described. The same members as those in the embodiment are designated by the same reference numerals, and detailed description thereof will be omitted. The mold transfer device 20A provided on each of the mounting parts 10 and 11 comprises a pair of mold transfer units 70. Since these four mold transfer units 70 have the same structure, they are provided on the first mounting part 10. The mold transfer unit 70 that is used will be described. As shown in FIGS. 5 and 6, a substantially rectangular parallelepiped casing 71 is provided in a vertical direction on the front side of the carrier vehicle 7, and a driving cylinder 72 is provided in the casing 71 in the vertical direction and its piston. The rod 72a is arranged downward, and a pair of left and right sprockets 73 are rotatably attached to the lower end of the piston rod 72a of the driving cylinder 72 via a pin member 74 facing left and right. .

The base end of the half-folded chain 75 is fixed near the lower end of the cylinder main body 72b of the driving cylinder 72, and the middle part of the chain 75 is hooked on the sprocket 73 and turned outward to make a U-turn. It is bent into a substantially L-shape through the inside of 71 and is continuously extended into the guide groove 24, and its tip end is detachably connected to the clamp device 5A through the second connecting mechanism 30A, and the drive cylinder 72 is provided. Is driven, the sprocket 73 is engaged with the chain 75 and is rotated and driven in the vertical direction, and the clamp device 5A is driven by the principle of the moving pulley to double the stroke of the piston rod 72a through the chain 75. It is designed to move back and forth by a minute. In the clamp device 5A, the action point portion 42b of the clamp lever 42 is provided on the flange portion 8a of the mold 8 with the action point portion 42b having the engaging recessed portion 42c provided upward on the pivot support portion. It is engaged with an engaging plate 76 that is fixed in a protruding shape upward, and is detachably connected to the mold 8. The engagement plate 76 and the action point portion 42b correspond to the first connecting mechanism 31A. When pushing the mold 8 toward the mold accommodating portion 13 side of the mold fixing plate 2 via the first connecting mechanism 31A, the front concave portion of the engaging concave portion 42c of the action point portion 42b of the clamp lever 42 is pushed. It is pushed forward with the engagement plate 76 in contact with the wall surface, or with the rear end face of the clamp body 40 in contact with the front end face of the flange portion 8a of the mold 8.

The chain 75 is formed by alternately connecting a large number of link plates 77 each having a substantially U-shaped cross section and a pair of right and left link plates 78 having a substantially flat plate shape by pin members 79. Rollers 80 engaging with the sprocket 73 are rotatably provided in the respective portions, and in the chain 75, each roller 80 is held in the guide groove 24 by engaging with the wide engaging groove portion of the guide groove 24, and the link plate A hydraulic supply hose 81 is housed in the space formed between 77 and 78 from the base end of the chain 75 to the front end thereof, and the base end of the hydraulic supply hose 81 is connected to a hydraulic supply device (not shown). The front end of the hydraulic supply hose 81 is removably connected to the clamp device 5A via the second connecting mechanism 30A.

Explaining the second connecting mechanism 30A, a connecting block 55 that is movable along the guide grooves 21 and 24 and the T groove 4 is provided at the tip of the chain 75, and the connecting block 55 has the above-mentioned structure. Similar to the embodiment, the connecting lever 56 is rotatably supported via the shaft member 57, and the connecting lever 56 clamps by engaging the engaging portion 56a at the tip end thereof with the engaging groove 40b of the clamp body 40. A coupling 82 that is connected to the device 5A and is detachable from the clamp body 40 is provided on the rear end surface of the connection block 55. The hydraulic cylinder 43 of the clamp device 5A is connected to the hydraulic cylinder 43 via the coupling 82. Pressure oil is supplied from 81. A check valve is provided on the clamp body 40 side so that the hydraulic pressure in the hydraulic oil chamber of the hydraulic cylinder 43 does not leak when the coupling 82 is disconnected. In the mold transfer device 20A, the mold 8 is replaced in the same manner as in the above embodiment, but after the mold replacement, pressure oil is supplied to the clamp device 5A via the hydraulic pressure supply hose 81 and the flange is supplied. The hydraulic pressure supply hose 81 and the chain 75 are separated from the clamp device 5A while the portion 8a is driven to be clamped.

As the first connecting mechanism 31, the flange portion 8a is provided with a hole or groove that can be engaged with the operating point portion 42a of the clamp lever 42, so that the clamp lever 42 and the flange portion 8a are directly connected to each other. Alternatively, the clamp device 5A may be provided with a separate lever member for connection, and the lever member may be engaged with the hole or groove formed in the flange portion 8a. In the present embodiment, the pair of clamp devices 5A is provided on the loading / unloading side of the mold, but the present invention can be similarly applied to the case where one or three or more clamp devices 5A are provided. Although the present invention is applied to the mold exchanging device of the press molding machine 1 in this embodiment, the present invention can be similarly applied to a mold exchanging device of a molding machine such as an injection molding machine.

[Brief description of drawings]

FIG. 1 is a plan view of a press molding machine and a carriage.

FIG. 2 is a sectional view taken along line 2-2 of FIG.

FIG. 3 is a plan view of the vicinity of a clamp device.

FIG. 4 is a sectional view taken along line 4-4 of FIG.

FIG. 5 is a vertical cross-sectional view of the vicinity of a mold transfer device according to a modification.

FIG. 6 is a vertical cross-sectional view of the vicinity of a clamp device of a mold transfer device according to a modification.

[Explanation of symbols]

 1 Press Molding Machine 2 Mold Fixing Plate 4 T-Slot 5A Clamping Device 7 Mold Carrying Cart 8 Mold 8a Flange 13 Mold Housing 20, 20A Mold Transfer Device 23 Guide Member 24 Guide Groove 26, 75 Chain 29 Electric Motor 30, 30A Second connection mechanism 31, 31A First connection mechanism 60, 81 Hydraulic supply hose

Claims (3)

[Scope of utility model registration request] 1. A mold transfer device for transferring a mold between a mold accommodating portion of a mold fixing plate of a molding machine and a mold transfer car, wherein a T of a mold fixing plate provided on the mold transfer car is provided. A guide member having a guide groove connectable to the groove, a drive rope that can move forward and backward in the guide groove and the T groove, and a clamping device for clamping the flange portion of the mold, the tip of the drive rope. Part is connected to the guide groove and T
A clamp device movable along the groove, a drive means for driving the clamp device forward and backward through the drive rope, and a first connecting mechanism for detachably connecting the clamp device and the mold. A mold transfer device with a clamp device characterized by being provided. 2. The mold transfer device with a clamp device according to claim 1, wherein a hydraulic supply hose for supplying hydraulic pressure to the clamp device is held by a drive cable. 3. A second connecting mechanism for detachably connecting the clamp device and the drive cable, and a hydraulic pressure supply hose for supplying hydraulic pressure to the clamp device on the side of the mold fixing plate. The mold transfer device with a clamp device according to claim 1.