KR100481351B1 - Mold Exchanger of Press Machine - Google Patents

Abstract

In the vicinity of the bolster in the press main body, there existed a moving rail etc. which cause trouble.

In the press machine provided with the die lifter 8 in the bolster 4 provided in the press main body 1, the moving trolley | bogie 3 is installed in the vicinity of the press main body 1, and this moving trolley 3 top In addition, the mold support means 13 which mounts the metal mold | die 7 which needs to be replaced is provided, and it spreads between the bolster 4 and the metal mold | die support means 13 to the said metal mold support means 13, Since the intermediate moving rail 13f for entering and exiting the mold 7 is provided so that the intermediate moving rail 13f can be moved forward and backward, the intermediate moving rail 13f can be retracted and stored in the mold supporting means 13 after the mold replacement. No moving rails or the like protruding around the bolster 4 protrudes.

Description

Mold changer of press machine

The present invention relates to a mold changing apparatus of a press machine which is easy to change molds.

In a press machine which molds a workpiece using a conventional mold, the mold is replaced every time the shape of the workpiece to be molded changes.

In addition, since the mold is generally heavy, it takes a lot of time for the replacement work, which causes a decrease in the operation rate of the press machine. In order to improve such a problem, the mold exchange apparatus which can replace a metal mold | die safely in a short time conventionally is proposed and put into practical use.

For example, in Japanese Patent Application Laid-Open No. 50-87576 (Japanese Patent Application No. 53-11253), Japanese Patent Application Laid-Open No. 58-18628, Japanese Patent Application Laid-Open No. 5-33919, etc., the front of the bolster installed in the press main body is disclosed. (Or rear side), a plurality of rails that can be freely folded in the horizontal direction are installed substantially horizontally, and the molds are placed on these rails and the molds are moved to the bolster side along the rails, thereby bringing the molds onto the bolsters or forming them. After the used mold is moved on the rail, the mold is carried out.

In Japanese Unexamined Patent Publication No. 49-36190, a movable support that can be folded freely in the up and down direction or a movable support that is movable in Shanghai can be installed on the front of the bolster. It raises as much as possible, and puts a metal mold | die on this movable support, and it is comprised so that a metal mold | die may be carried in and out.

Furthermore, Japanese Patent Application Laid-open No. Hei-231119 (JP-A 7-119029) discloses a workpiece exchange stand on the side of a processing machine, and an intermediate rail (pulley roller device) between the workpiece exchange stand and the processing machine. The workpiece placed on the workpiece exchanger is pressed to the processing machine by the pressure driving means installed on the workpiece exchanger, and the workpiece is brought into the processing machine. It is configured to be coupled by a pressing coupler installed at the tip of the pressing driving means to be carried out from the processing machine onto the workpiece exchange table.

However, in the mold exchanger which installs rails which can be folded freely in the horizontal direction or the vertical direction at the front of the bolster, and exchanges the molds using these rails, the mold is taken in and out by human force. When the mold is large and heavy, it is difficult and dangerous to replace it, and even when each rail is stored along the bolster after replacing the mold, a part of the rail protrudes from the front of the bolster to the worker side, so that the rail is pressed. This may cause inconvenience in the work procedure during work or mold replacement.

In addition, in the case where the rail which can be moved to the front of the bolster is installed, the rail can be stored in the same plane as the bottom surface after the mold replacement, so that the rail does not interfere with the work, Since the movement of the mold must be carried out, there are inconveniences such as difficulty and risk in changing the mold.

On the other hand, in the workpiece exchanger provided with the workpiece exchange stand on the side of the processing machine, the intermediate rail provided between the processing machine and the workpiece exchange stand protrudes from the processing machine even after exchanging the workpiece. There is discomfort.

In addition, since the push coupler provided at the tip of the push drive device is operated by an actuator, an actuator is required on the intermediate rail, which is complicated in structure and increases work cost.

This invention is made | formed in order to improve these conventional inconveniences, Comprising: It aims at providing a low cost by simply constructing the metal mold | die exchange apparatus of the press machine in which metal mold exchange is performed safely in a short time.

In order to achieve the above object, the invention described in claim 1 is a press machine in which a die lifter is attached to a bolster provided in a press main body, and a moving cart is provided near the press main body. A mold supporting means for placing a mold to be replaced on a moving cart is provided, and an intermediate movable rail for placing and removing a mold is placed on the mold supporting means between the bolster and the mold supporting means. It is installed.

According to the above configuration, since the intermediate moving rails are retracted after the mold replacement and stored in the mold supporting means on the moving cart, the intermediate moving rails and the like do not protrude around the bolster. In addition, since the effect can be obtained by simply installing the intermediate moving rail in the mold support means on the moving cart, the configuration is simple and can be provided at low cost.

In addition, the invention described in claim 2 is provided with a mold dispensing means for dispensing a mold by moving the intermediate moving rail on the mold supporting means provided on the moving cart.

According to the above configuration, the mold dispensing means allows the mold to be withdrawn between the press main body and the mold supporting means, thereby eliminating the need to withdraw heavy molds by manpower. Exchange can be performed.

Furthermore, the invention described in claim 3 further includes a fixed body applying guide fixed to an upper portion of a mold supporting means, and a movable body applying guide pivoted up and down in front of the fixed body applying guide. In addition, the chain guide is composed of a chain with a side guide roller capable of moving back and forth toward the bolster.

With the above configuration, it is possible to reliably carry out heavy weight molds in a short time, and to store them in accordance with the mold supporting means by rotating the movable body guide downward after the mold replacement, thereby preventing work. Do not.

On the other hand, the invention described in claim 4 is provided with a mold detachment means for detachably coupling to a mold at the front end of the chain with side guide rollers, and detachment of the mold detachment means with a die lifter. It is to be carried out by the shanghai dong of the mold.

According to the above configuration, the locking operation between the locking means and the mold can be reliably carried out by the vertical movement of the mold, and since there is no need to install an actuator in the detachable means, the configuration is simple and can be provided at low cost.

In addition, the invention according to claim 5 provides a plurality of mold supporting means on a moving truck at intervals in the moving direction of the moving truck, and a work passage is provided between these mold supporting means.

According to the above configuration, the mold to be used next is placed on the mold supporting means in advance, and the mold is replaced in a short time, so that the productivity can be improved and the work passage between the mold supporting means can be improved. Since the mold replacement procedure is carried out, the workability can be greatly improved.

An embodiment of the present invention will be described with reference to the drawings.

1 is a plan view of a press machine equipped with a mold changer of the present invention, FIG. 2 is a side view of the press, FIG. 3 is a plan view of the die changer, FIG. 4 is a front view, and FIG. 5 is a drive of the intermediate moving rail. 6 is a plan view of the mold dispensing means, FIG. 7 is a sectional view taken along the line VII-VII of FIG. 6, FIG. 8 is a sectional view taken along the arrow Y direction of FIG. 6, FIG. FIG. 10 is a cross-sectional view taken along the arrow Z direction of FIG. 9, FIG. 11 is a detailed view of the mold dispensing means, FIG. 12 is a detailed view of the chain guide means, and FIG. 13 is an explanatory view of the operation of the mold detaching means.

In these drawings, reference numeral 1 denotes a press main body, and two rails 2 are provided on the bottom of the front or rear surface of the press main body 1, and the main parts of the mold exchange apparatus are provided on these rails 2. The moving trolley | bogie 3 which comprises a part is provided so that a movement is possible along the press main body 1. As shown in FIG.

The press body 1 is provided with a bolster 4 on the bed 1a, and slides above the bolster 4 in a crown 1b of the press body 1. A slide 5 which is driven up and down by a drive mechanism (not shown) is provided, and a die (upper die) 7 attached to the lower surface of the slide 5 and a die on the bolster 4 are provided. Press molding is performed between the molds (lower molds) 7 fixed by the clamper 6.

Moreover, the upper part of the said bolster 4 is provided with the pair of die lifters 8 which are moved up and down at the time of metal mold exchange in parallel to the metal mold carrying-in and carrying-out direction, and the metal mold | die on the upper surface of these die lifters 8 is carried out. A plurality of rollers 8a, which facilitate the movement of 7), are rotatably supported.

On the other hand, a traveling motor 10 is connected to a part of the plurality of wheels 9 provided below the moving trolley 3 via a chain 11 and moved by the traveling motor 10. The trolley | bogie 3 is made to move on the rail 2 frequently, and the trolley | bogie 3 is prevented on the said rail 2 by preventing the wheel 9 from being separated from a track. A pair of positioning stoppers 12 for positioning at the mold exchange position A are provided.

On the mobile trolley 3, a pair of mold supports for placing a mold 7 carried into the press main body 1 and a mold 7 'carried out in the press main body 1 upon completion of press molding are placed. The means 13 are provided separately in the moving direction of the moving trolley 3, and between these mold supporting means 13 is a working passage 15 through which an operator can pass.

The mold supporting means 13 is provided on the four support pillars 13a for supporting the four corners of the mold 7 from below, and is provided inside the support pillars 13a and is horizontally supported by the support pillars 13c. And a pair of support rails 13d, which are installed inside the support rails 13d, and which are horizontally supported by a pedestal 13e, and which are supported horizontally. The upper surface of the pillar 13a, the support rail 13d, and the intermediate | middle moving rail 13f is set slightly higher than the upper surface of the bolster 4 mentioned above.

Positioning means 13b for positioning the mold 7 are provided on the upper part of each support 13a, and each support rail 13d is provided to be parallel to the mold loading and unloading direction. In order to facilitate the movement of the mold 7, a plurality of rollers 13g are rotatably supported.

The intermediate movable rail 13f is also provided in parallel with the mold loading and unloading directions, and both sides are supported by the guide roller 13h provided on the pedestal 13e via the guide roller 13i.

The intermediate movable rail 13f is also rotatably supported by a plurality of rollers 13j on the upper portion in order to facilitate the movement of the mold 7, and these intermediate movable rails 13f are movable rail driving means. By 17, it is driven to move back and forth in the direction of the press main body 1. As shown in FIG.

The moving rail driving means 17 has a moving rail driving source 17a installed on the moving trolley 3, and has an endless chain (endless chain) 17b interposed therein with the moving rail driving source 17a. The drive shaft 17c is interlocked.

The drive shaft 17c is rotatably supported at an upper portion of the pedestal 13e so as to be perpendicular to the intermediate moving rail 13f, and pinions 17d are provided on both ends of the drive shaft 17c.

And these pinions 17d are engaged with the rack 17e provided in the lower surface of each intermediate | middle movable rail 13f, respectively, and each intermediate | middle movement is made by forward-reversing the drive shaft 17c by the said moving rail drive source 17a. While supporting the rail 13f in the bolster 4 direction, the support member 18 is fixed to the bolster 4 side for accommodating the distal end portion of each intermediate moving rail 13f from below. These supporting members 18 and the guide rails 13h support the load of the die 7 applied to the intermediate moving rails 13f.

On the other hand, between the intermediate moving rails 13f, a mold dispensing means 20 is provided. As shown in Figs. 8 to 11, the mold dispensing means 20 has the same height as the guide rail 13h for guiding the intermediate moving rail 13f, and the pair of fixed body applying guides 20a guides the same. It is provided in parallel with the rail 13h.

These fixed body applying guides 20a are formed so that the openings face the channel members, and are horizontally supported on the pedestal 20b provided in the longitudinal direction on the moving trolley 3, and between these chain guides 20a. One end of the chain 20c having a side guide roller attached thereto is retractably received in the bolster 4 direction.

The chain 20c having the side guide rollers is a structure in which a roller 20f for rolling the inside of the fixed body applying guide 20a is provided at the end of the pin 20e for connecting each link 20d. And a mold detachment means 21 shown in FIG. 10.

The mold detachable means 21 includes a support 21a attached to the tip of the chain 20c with side guide rollers and a coupling member 21c pivoted through a pin 21b on the support 21a. .

The base of the support 21a is connected to the front end of the chain 20c with the side guide rollers, and the front end portion is provided with the same roller 21d as the chain 20c with the side guide rollers.

The coupling member 21c is pushed upward by the pressing means 21e such as the coil spring coupled to the pin 21b, and is connected to the common base 7a provided with the mold 7 on the tip side. A coupling hole 21f for detachably coupling to the L-shaped coupling portion 7b provided therein and a roller 21g are provided.

The engaging portion 7b is provided in the U-shaped notched portion 7c formed on the bottom of the substantially middle portion of the common base 7a, and the roller 21g provided on the engaging member 21c is notched 7b. ), The coupling member 21c is rotated up and down about the pin 21b via the roller 21g by the shanghai copper of the common base 7a.

On the other hand, after the sprocket 20h provided on the rear end side of the fixed body applying guide 20a bypasses the proximal end of the chain 20c with the side guide rollers, as shown in FIG. 11, The chain drive source 20i provided on the moving trolley 3 is inserted in the sprocket 20h as shown in Figs. The sprocket 20h is rotated by the chain drive source 20i, and the chain 20c with the side guide roller is connected to the fixed body guide 20a. The press body 1 is capable of moving forward and backward to the bolster 4 side.

The movable body applying guide 23a constituting the chain guide means 23 is connected to the bolster 4 side end of the fixed body applying guide 20a.

The movable body applying guide 23a is a structure in which two channel members are provided so that the openings face each other in the same way as the fixed body applying guide 20a. The proximal end is attached to the pedestal 20b by the pin 23b as shown in FIG. The fixed body guide 20a and the movable body guide 23a are connected in a linear shape by pivoting and rotating in a horizontal position at a position where the tip side is formed substantially vertically about the pin 23b. The front end of the chain guide 23a is connected to the joint guide 23d fixed to the side surface of the bolster 4 by the bracket 23c.

Further, one end of the link 23e is pivoted on the lower end of the base end side of the movable body applying guide 23a, and the other end of the link 23e is pivoted at one end of the rack 23f.

The rack 23f is provided with a plurality of rollers 23g before and after, and these rollers 23g are configured to roll inside the guide rail 23h horizontally installed on the pedestal 20b, and the rack 23f. ) Is engaged with the pinion 23i.

The pinion 23i is connected to a movable guide drive source 23k via an endless chain 23j, and the pinion 23i is rotated by the movable guide drive source 23k, thereby rack 23f. And the link 23e, the movable guide 23a can be rotated from the retracted position indicated by the solid line in Fig. 12 to the use position indicated by the virtual line.

4 and 5, reference numeral 26 denotes a cable base-up in which a cable for supplying power to each drive source on the mobile trolley 3, an electric signal, a cable for transmission (not shown in the drawings), and the like are accommodated. Is displayed.

Next, the operation of the metal mold | die exchanger comprised as mentioned above is demonstrated.

The next mold 7 to be used is placed on one mold support means 13 on the moving trolley 3, and in this state, the other mold support means 13 is positioned at the mold exchange position A. FIG. The moving cart 3 is stopped and waited.

Then, when the press work is completed, the die clamper (not shown in the drawing) on the slide 5 side is removed while the slide 5 is lowered and the upper die 7 is placed on the lower die 7. The slide 5 is then raised.

Thereafter, the pinion 17d is rotated by the movable rail driving source 17a on the mold supporting means 13 side stopped at the mold exchange position A to simultaneously rotate the pair of intermediate moving rails 13f by the bolsters 4. The front end portion is engaged with the support member 18, and the pinion 23i is rotated in the movable guide drive source 23k to advance the rack 23f.

Thereby, the movable body applying guide 23a connected to the rack 23f via the link 23e is rotated upwards centering on the pin 23b, and the joint guide 23d provided with the front end at the bolster 4 side is provided. The contact is stopped at the bottom, thereby stopping in a substantially horizontal state.

Next, in this state, the sprocket 20h is rotated by the chain drive source 20i of the metal mold dispensing means 20, so that the chain 23c with the side guide roller housed in the chain case 20i is fixed. The notch part of the common base 7a on the bolster 4 is attached to the detachable means 21 attached to the front end of the chain 20c with the side guide roller through the guide 20a. When entering into (7c) as shown in FIG. 13, the roller 21g of the engagement member 21c is pressed by the inclined surface 7d of the inlet part notch, and the front-end | tip of the engagement member 21 is centered about the pin 21b. Since it is pushed down, the tip of the engaging member 21c reaches below the engaging portion 7b without interfering with the engaging portion 7b in the notched portion 7c.

Next, in this state, when the die clamper 6 on the bolster 4 side is released and the die 7 is raised by the die lifter 8 together with the common base 7a, the roller 21g as shown in Fig. 9. ), The pressing force is released, and the tip of the coupling member 21c is rotated upward by the pressing means 21e, whereby the coupling hole 21f of the coupling member 21c engages with the coupling portion 7b. .

Next, when the chain drive source 20i is rotated in this state and the chain 20c with the side guide roller is retracted, first, the common base 7a moves on the roller 8a of the die lifter 8 while pressing. The used mold 7 'is taken out in the main body 1.

Subsequently, while moving on the roller 13g of the intermediate moving rail 13d, it reaches on the support rail 13d on the moving trolley 3, and by the positioning means 13b provided on the support pillar 13a. It is positioned to a predetermined position.

When the used mold 7 'is pulled out in the press main body 1 as described above, the intermediate moving rail 13f is once retracted to its original position, and the movable body applying guide 23a is also shown by the solid line in FIG. Store in the standby position indicated.

In this state, the moving cart 3 is driven to stop the mold supporting means 13 on which the mold 7 to be used next is placed at the mold replacement position A. FIG.

Next, in the same manner as described above, the intermediate moving rail 13d is advanced to the bolster 4 side, and the movable body applying guide 23a is also rotated from the standby position to the use position.

Next, in this state, the sprocket 20h is rotated by the chain drive source 20i of the metal mold dispensing means 20, and the chain 20c with the side guide roller housed in the chain case 20i is fixed. The common base 7a coupled with the engaging member 21c of the detachable means 21 provided at the distal end of the chain 20c attached to the movable body applying guide 23a by way of the 20a is passed through the movable body applying guide 23a. It is sent to the press main body 1 with the metal mold | die 7.

At this time, since the die lifter 8 is raised, the die 7 sent into the press main body 1 moves the roller 8a of the die lifter 8 to a predetermined position.

When the die 7 is stopped at a predetermined position, when the die lifter 8 is lowered, the common base 7a is located on the upper surface of the bolster 4, and at the same time, the roller is formed on the lower surface of the notch 7c of the common base 7a. Since 21g is pushed down, the tip of the coupling member 21c is rotated downward as shown in FIG. 13 around the pin 21b, and peeled off the coupling portion 7b, so that the side guide roller is in this state. In addition to retracting the attached chain 20 to its original position, the intermediate moving rail 13d is also retracted to lower the movable body applying guide 23a to the standby position.

In the meantime, when the common base 7a is fixed by the bolster 4 side die clamper 6, the slide 5 is lowered and the upper surface of the upper die 7 is brought into contact with the bottom surface of the slide 5, thus this state. After the upper mold 7 is fixed by the die clamper on the slide 5 side, the slide 5 is raised, so that the die 7 to be used next can be attached to the press body 1.

In the above embodiment, the case where two pairs of mold supporting means 13 are provided on the moving cart 3 may be provided, but three or more pairs may be provided.

In addition, the mold supporting means 13 may be prepared in advance in plural pairs in accordance with the production form, and these may be selectively attached onto the moving trolley 3 to be provided by mold exchange.

According to the present invention, by placing the mold to be used next to the mold support means in advance, replacement of the mold can be performed in a short time, thereby improving productivity and using a working passage between the mold support means. As a result of the die replacement procedure, the workability can be greatly improved.

1 is a plan view of a press machine equipped with a metal mold exchanger according to an embodiment of the present invention.

Fig. 2 is a side view of a press machine equipped with a mold changer according to an embodiment of the present invention.

Fig. 3 is a plan view showing a mold changing apparatus of the press machine according to the embodiment of the present invention.

Fig. 4 is a front view showing a mold changing apparatus of the press machine according to the embodiment of the present invention.

Fig. 5 is a side view of the moving rail driving means provided in the metal mold exchanger of the press machine according to the embodiment of the present invention.

Fig. 6 is a plan view of a mold dispensing means of the press machine according to the embodiment of the present invention.

FIG. 7 is a cross-sectional view taken along line VII-VII of FIG. 6.

FIG. 8 is a cross-sectional view taken along the arrow Y direction of FIG. 6.

Fig. 9 is a detailed view of the mold detaching means provided in the mold exchange apparatus of the press machine according to the embodiment of the present invention.

10 is a cross-sectional view taken along the arrow Z direction of FIG. 9.

Fig. 11 is a detailed view of a mold dispensing means provided in a mold exchange apparatus of a press machine according to the embodiment of the present invention.

12 is a detailed view of the chain guide means provided in the metal mold exchanger of the press machine according to the embodiment of the present invention.

Fig. 13 is a detailed view of a mold detaching means provided in a mold exchange device of a press machine according to the embodiment of the present invention.

* Description of the symbols for the main parts of the drawings *

(1) ------------------------ press body,

(3) -------------------------- mobile bogie,

(4) ---------------------------- bolster,

(7) ------------------------------ mold,

(8) ------------------------ die lifter,

(13) --------------------- Mold supporting means,

(13f) -------------------- Intermediate rail.

Claims (5)

In the press machine equipped with the die lifter 8 in the bolster 4 provided in the press main body 1, the moving trolley | bogie 3 is provided in the vicinity of the said press main body 1, and this moving trolley | bogie 3 is carried out. In addition, the mold support means 13 which mounts the metal mold 7 which needs to be replaced is provided, and between the said bolster 4 and the metal mold | die support means 13 in the said metal mold support means 13, And an intermediate transfer rail (13f) which is attached to and pulled out of the mold (7) so as to be retractable. 2. The mold dispensing means (20) of claim 1, wherein the mold dispensing means (20) is provided on the mold supporting means (13) provided on the moving cart (3) to move the intermediate moving rail (13f) on and out of the mold (7). Mold exchange apparatus of the press machine, characterized in that. The mold dispensing means (20) according to claim 1, wherein the mold dispensing means (20) is pivotably pivoted up and down in front of the fixed body applying guide (20a) fixed to the upper part of the mold supporting means (13) and the fixed body applying guide (20a). And a chain 20c with side guide rollers capable of advancing and retracting toward the bolster 4 in the movable body applying guide 23a and the chain guides 20a and 23a. Mold changer. 2. The mold detachment means (21) according to claim 1, further comprising a mold detachment means (21) which detachably engages with the mold (7) at the tip of the chain (20c) with side guide rollers. A mold exchange apparatus for a press machine, characterized in that attachment and detachment are performed by shanghai-dong of a mold (7) moved by a die lifter (8). 2. The work passage according to claim 1, wherein a plurality of mold supporting means (13) are provided on the moving cart (3) at intervals in the moving direction of the moving cart (3), and between these mold supporting means (13). A mold exchange device for a press machine, characterized in that (15) is provided.

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