JP2005131671A - Die height adjusting device of press machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a die height adjusting device of a press machine, which adjusts a die height over the whole slide and further corrects the inclination of the slide by adjusting the die height right under a point. <P>SOLUTION: The device is provided with: a wholly driving source 20 for simultaneously driving the whole number of slide adjusting mechanisms 10; a power wholly transmitting means 20A connecting the wholly driving source and the whole number of the slide adjusting mechanisms; a 1st clutch mechanism 24 connecting/disconnecting driving force from the wholly driving source to the slide adjusting mechanisms with the power wholly transmitting means provided between the source and the mechanisms; individually driving sources 30 for individually driving the slide adjusting mechanisms; a power individually transmitting means 30A individually connecting the slide adjusting mechanisms and the individually driving sources; and a 2nd clutch mechanism connecting/disconnecting driving force from the individually driving sources to the slide adjusting mechanisms with the power individually transmitting means provided between the sources and the mechanisms. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

    The present invention relates to a die height adjusting device for a press machine configured to adjust the distance between a slide and a slide driving means by a slide adjusting mechanism interposed between the slide and a point.

    A general press machine (crank press having a straight side frame) A shown in FIG. 8 includes a bed B, a bolster C, a column D, a crown E, a slide S, and the like, and is installed between the bolster C and the slide S. A material (not shown) is set between the mold G, specifically, an upper mold U attached to the lower surface of the slide S and a lower mold L attached to the upper surface of the bolster C. By applying pressure, a product having a predetermined shape following the mold G is pressed.

  Further, in the press machine A, points P, P... Provided at a plurality of locations on the slide S are connected to slide driving means H, H. The slide adjustment mechanism J, J... Interposed between the slide drive S and the slide S is operated by a single motor (drive source) (not shown), and the distance between the slide drive means H, H. By adjusting, the die height corresponding to the mold G is adjusted.

  On the other hand, in the press machine A, each mechanism portion of the slide driving means H and the connecting portion between the slide driving means H and the point P are worn due to secular change or the like accompanying operation, so that A slight inclination may occur in the slide S due to variations in die height.

  By the way, even if the same pressing force is applied using the same mold, if the press machine to be used is different (same model, different machine), it depends on factors such as the rigidity of the press machine used and aging The inclination of the slide S varies depending on the press machine.

  Thus, there is a problem that the slide S tilts and the upper die U and the lower die L are displaced, resulting in inaccuracies in the accuracy of the press-processed product and the life of the die G being significantly reduced. In order to improve such a problem, an apparatus for correcting the tilt of the slide is provided (for example, see Patent Document 1).

The apparatus in the above document is configured to adjust the position of each point with respect to the slide and to correct the tilt of the slide by providing a driving source for each slide adjusting mechanism and operating each slide adjusting mechanism individually. doing.
JP 2001-121297 A

    By the way, in a device that adjusts the die height of the entire slide by operating all the slide adjustment mechanisms simultaneously, it is difficult to correct the tilt of the slide. On the other hand, the individual slide adjustment mechanisms are operated individually to control the slide. In the device for correcting the tilt, it is difficult to adjust the die height of the entire slide because the operation control becomes complicated, for example, the individual drive sources provided in each slide adjustment mechanism are synchronized.

  An object of the present invention is to provide a die height adjusting device for a press machine capable of adjusting the die height over the entire slide and correcting the tilt of the slide by adjusting the die height immediately below the point in view of the above situation. There is to do.

    In order to achieve the above object, a die height adjusting device for a press machine according to the invention of claim 1 includes a slide driving means for driving the slide up and down, and a plurality of points provided on the slide and connected to the slide driving means. In a die height adjusting device for a press machine, comprising a slide adjusting mechanism that is provided between a slide and a plurality of points and adjusts the distance between the slide and the slide driving means. An overall drive source for simultaneously driving all of the motors, an overall power transmission means for linking the overall drive source and the total number of slide adjustment mechanisms, and a slide adjustment mechanism from the overall drive source that is interposed in the overall power transmission means The first clutch mechanism that connects / disconnects the driving force to the actuator and the slide adjustment mechanism An individual drive source for moving, an individual power transmission means for individually linking the slide adjustment mechanism and the individual drive source, and a drive force from the individual drive source to the slide adjustment mechanism interposed between the individual power transmission means. And a second clutch mechanism for connecting / disconnecting.

  According to a second aspect of the present invention, there is provided a die height adjusting device for a press machine according to the second aspect of the invention, wherein when the slide adjusting mechanism is driven by an individual drive source in the die height adjusting device for the press machine according to the first aspect of the invention. An adjustment amount limiting means for mechanically limiting the amount is provided.

According to the die height adjusting device of the press machine related to the invention of claim 1, the first clutch mechanism is connected and the second clutch mechanism is disconnected, and the entire number of slide adjusting mechanisms are controlled by the entire drive source through the entire power transmission means. By simultaneously driving, the die height is adjusted over the entire slide. On the other hand, the second clutch mechanism is connected and the first clutch mechanism is disconnected, and the individual drive sources individually via the individual power transmission means. By individually driving the slide adjustment mechanism, the inclination in the slide is corrected.
Thus, according to the die height adjusting device of the press machine related to the invention of claim 1, the die height can be adjusted over the entire slide, and the die height just below the point is adjusted to correct the inclination of the slide. It becomes possible.

  According to the die height adjusting device of the press machine related to the invention of claim 2, when adjusting the slide height by operating the slide adjusting mechanism by the individual driving source and adjusting the die height immediately below the point, the adjustment amount is limited. By limiting the adjustment amount in the slide adjustment mechanism by means, it is possible to prevent damage to the slide adjustment mechanism, the mold, and the like due to the excessive adjustment amount.

Hereinafter, the present invention will be described in detail with reference to the drawings illustrating embodiments.
1 to 7 show an example in which a die height adjusting apparatus according to the present invention is applied to a press machine for processing a metal sheet material into a panel having a desired shape, for example, in an automobile production factory. Note that the overall configuration of the press machine is basically the same as that of the conventional press machine A shown in FIG.

  As shown in FIGS. 1 and 2, slides 3 are supported on the four corner columns (uprights) 2, 2... In the press machine 1 so as to be movable up and down. The points 5, 5... Provided at the four corners of the slide 3 are connected.

  The slide 3 is provided with four slide adjusters (slide adjustment mechanisms) 10, 10... Corresponding to the points 5, 5..., And the four points 5, 5. It is installed and installed on the slide 3.

  As shown in FIG. 3, the slide adjuster 10 includes a casing 11 fixedly installed at a predetermined position of the slide 3, and a nut member 12 supported so as to be rotatable and not movable up and down with respect to the casing 11. The point 5 is inserted through the nut member 12, and the nut member 12 is screwed into a threaded portion (screw groove) 5 s of the point 5.

  The nut member 12 is provided with a worm wheel 12H, and the drive shaft 14 of the worm gear 13 meshing with the worm wheel 12H is supported by the casing 11 and extends to the outside.

  Incidentally, the slide adjuster 10 is provided with a linear sensor 10s (see FIG. 1) for detecting the amount of movement of the point 5 relative to the slide adjuster 10, in other words, the amount of movement (height dimension) of the point 5 relative to the slide 3. It has been.

  On the other hand, as shown in FIGS. 1 and 2, the slide 3 is provided with one overall drive motor (overall drive source) 20 that drives all the slide adjusters 10 at the same time. A drive shaft 22 to which the power of the drive motor 20 is transmitted, and two gear boxes 23 and 23 that are connected to both ends of the drive shaft 22 and branch the power are provided.

  An output shaft 23A of the gear box 23 is connected to one end of a shaft 35A in a gear box 35 of an individual drive unit 31 described later and a tooth clutch 24 described later, and further, the shaft 35A of the gear box 35 is connected to the shaft 35A. The other end is connected to the drive shaft 14 of the slide adjuster 10 via a coupling 25.

  The transmission motor 21, the drive shaft 22, the output shaft 23A of the gear box 23, the shaft 35A of the gear box 35, the coupling 25, and the drive shaft 14 of the slide adjuster 10 connect the entire drive motor 20 and all the slide adjusters 10. The whole power transmission means 20A which cooperates is comprised.

  Here, the above-described tooth clutch 24 constitutes a first clutch mechanism that connects / disconnects the driving force from the entire drive motor 20 to all the slide adjusters 10 by being interposed in the entire power transmission means 20A. A clutch device that is connected / disconnected based on an electrical signal is employed.

  Incidentally, the overall power transmission means 20A is provided with an encoder 20s for detecting the operating state of the overall drive motor 20, and the encoder 20s is operated via a transmission means 26 linked to the drive shaft 22. The

  As shown in FIGS. 1 and 2, the slide 3 is provided with four individual drive motors (individual drive sources) 30 for individually driving the slide adjusters 10. This is an element constituting each of the four individual drive units 31 provided adjacent to the slide adjusters 10, 10.

  As shown in FIG. 4, the individual drive unit 31 has the individual drive motor 30 facing downward on a bracket 32 </ b> B of a frame 32 erected on the slide 3, and a drive shaft 33 extending from the individual drive motor 30 is The other end of the shaft 35A of the gear box 35 is connected to the gear box 35 fixedly installed on the slide 3 via a tooth clutch 34, which will be described later, and the slide adjuster 10 is driven via the coupling 25. It is connected to the shaft 14.

  The drive shaft 33, the output shaft 35 </ b> A of the gear box 35, the coupling 25, and the drive shaft 14 of the slide adjuster 10 constitute individual power transmission means 30 </ b> A that links the individual drive motor 30 and the slide adjuster 10.

  Here, the tooth clutch 34 described above constitutes a second clutch mechanism for connecting / disconnecting the driving force from the individual drive motor 30 to the slide adjuster 10 by being interposed in the individual power transmission means 30A. There is a clutch device that is connected / disconnected based on an electrical signal.

  On the other hand, as shown in FIGS. 4 and 5, a drive gear 41 is fixed to a drive shaft 33 extending from the individual drive motor 30, and this drive gear 41 meshes with a driven gear 42 supported on a table 32 </ b> T of the frame 32. A plate 43 having stopper claws 43s is fixed to the upper portion of the driven gear 42.

  Further, the table 32T of the frame 32 is fixedly provided with a block 44 having stopper tongues 44s engaged with the stopper claws 43s of the plate 43. The drive gear 41, the driven gear 42, the plate 43 and the block When the slide adjuster 10 is operated by the individual drive motor 30, the adjustment amount limiting means 40 that mechanically limits the adjustment amount, that is, the amount of movement of the point 5 with respect to the slide adjuster 10 is configured.

  The above-described overall drive motor (overall drive source) 20, overall power transmission means 20A and tooth clutch (first clutch mechanism) 24, individual drive motor (individual drive source) 30, individual power transmission means 30A and tooth clutch (second clutch). The die height adjusting apparatus 100 according to the present invention is configured by the clutch mechanism 34.

  Incidentally, the above-described die height adjusting apparatus 100 includes a controller (control means) (not shown). The controller controls the connection / disconnection operation of the tooth clutches 24, 34, and the preset die height dimensions. Based on various data relating to the tilt of the slide obtained by the measurement and feedback information from the linear sensor 10s, the encoder 20s, and the like, operation control of the entire drive motor 20, the individual drive motor 30, and the like is performed.

  In the press machine 1 equipped with the die height adjusting apparatus 100 having the above-described configuration, when the mold (upper mold) to be mounted on the slide 3 is replaced, first, the slide 3 from which the mold (upper mold) has been removed is moved upward. While raising to the dead point, a new mold to be replaced is set at a predetermined position of the bolster (moving bolster).

  Next, after the inclination of the slide 3 is corrected by the die height adjusting device 100 as described later, the die height of the slide 3 is adjusted by the die height adjusting device 100 as described later, and then the slide 3 is lowered by a predetermined dimension from the top dead center. After the slide 3 is brought into contact with the mold (upper mold), the mold (upper mold) is mounted on the slide 3 by a clamper (not disclosed).

  Here, in order to correct the inclination of the slide 3 by the die height adjusting device 100, it is necessary to collect the aspect of the inclination of the slide 3 as numerical data as preparation, for example, a laser range finder (not shown) placed on a bolster. ) To measure the distance to the point immediately below each point 5, 5,... On the slide 3, and based on this measured value, obtain the amount of displacement (dimension) from the reference plane immediately below each point 5, 5,. .

  Next, the tooth clutches (first clutch mechanisms) 24, 24... In the die height adjusting apparatus 100 are disconnected, while the tooth clutches (second clutch mechanisms) 34, 34... Are connected and linked to the respective slide adjusters 10. The individual drive motor 20 is controlled based on the numerical data of the amount of displacement collected in advance, and the tilt of the slide 3 is corrected by adjusting the die height immediately below the individual points 5, 5.

  At this time, as shown in FIG. 6, the tooth clutches (second clutch mechanisms) 34, 34... Interposed in the individual power transmission means 30A, 30A. The tooth clutches (first clutch mechanisms) 24, 24... Are disengaged to drive from the individual drive motor 30 that is transmitted via the transmission paths f, g, e constituting the individual power transmission means 30A. Each of the slide adjusters 10, 10... Is individually operated by force alone.

  Further, when the slide adjuster 10 is operated by the driving force from the individual drive motor 30, the plate 43 in the adjustment amount limiting means 40 described above rotates, and the stopper claw 43 s engages with the stopper tongue piece 44 s of the block 44. As a result, the amount of movement of the point 5 relative to the slide adjuster 10 is limited.

  For this reason, it is possible to prevent the point 5 from moving greatly due to a control error or the like even though the amount of displacement immediately below the point 5 due to the inclination of the slide 3 is a very small dimension of several mm units. Accordingly, it is possible to prevent the slide adjustment mechanism 10 and the mold from being damaged due to an excessive adjustment amount.

  As described above, after the inclination of the slide 3 is corrected by the die height adjusting device 100, the tooth clutches (first clutch mechanisms) 24, 24... In the die height adjusting device 100 are brought into the connected state, while the tooth clutch (second clutch mechanism). 34, 34... Are in the cut state, and the entire drive motor 30 linked to the total number of slide adjusters 10, 10... Is controlled based on the numerical data of the die height defined by the die to be replaced. , 5... Are operated to adjust the die height.

  At this time, as shown in FIG. 7, the tooth clutches (first clutch mechanisms) 24, 24... Interposed in the entire power transmission means 20A are brought into a connected state, and are interposed in the individual power transmission means 30A, 30A. .. Are disengaged so that the whole drive motor is transmitted via the transmission paths a, b, c, d, e constituting the whole power transmission means 20A. All of the slide adjusters 10, 10... Are operated simultaneously by only the driving force from 20.

  As described above, according to the die height adjusting apparatus 100 having the above-described configuration, the die height can be adjusted over the entire slide 3, and the tilt of the slide 3 is corrected by adjusting the die height immediately below the points 5, 5,. It becomes possible to do.

  Incidentally, in the above-described embodiment, when the mold is replaced, each slide adjuster 10 is individually operated to correct the inclination of the slide 3, and then all the slide adjusters 10 are simultaneously operated to operate the slides 3 of the slide 3. Although the die height is adjusted, of course, after all the slide adjusters 10 are operated simultaneously to adjust the die height of the slide 3, the individual slide adjusters 10 are individually operated to correct the inclination of the slide 3. It is also possible to take.

  Here, by using the press machine 1 having the above-described die height adjusting device 100, the machine difference between the press machine (mother machine) in the mold factory and the press machine in the production factory, that is, the same mold is obtained. It becomes possible to eliminate the quality difference that occurs between products molded by different press machines.

  That is, the press machine 1 having the above-described die height adjusting device 100 is a mother machine in a mold factory, and a slide inclination in a normal press machine installed in a production factory is measured and converted into data. Based on this measurement data When the upper die is attached to the press machine of the production factory by correcting the inclination of the slide 3 by the die height adjusting device 100 of the press machine 1 and correcting the shape of the upper die attached to the press machine 1, The quality will be reproduced without any adjustment work.

  In the above-described embodiment, the example in which the die height adjusting device according to the present invention is provided in the press machine for processing the metal sheet material is shown. However, not only the metal sheet material but also the sheet material made of resin, for example. Needless to say, the die height adjusting apparatus according to the present invention can also be applied to a press machine or the like for plastically deforming a sheet to a desired shape.

  Furthermore, in the above-described embodiment, an example in which a die height adjusting device according to the present invention is provided in a press machine having a pair of upper mold and lower mold is shown. For example, a fixed mold and a movable mold are provided. Of course, the die height adjusting apparatus according to the present invention can also be effectively applied to the horizontal press machine.

The principal part top view of the press machine which shows one Example of the die-height adjustment apparatus concerning this invention. The principal part front view of the press machine which shows one Example of the die height adjustment apparatus concerning this invention. (a) And (b) is the top view and side perspective view which show the slide adjustment mechanism in a die height adjustment apparatus. The cross-sectional side view which shows the individual drive unit in a die height adjustment apparatus. (a) And (b) is the top view and cross-sectional top view which show the individual drive unit in a die height adjustment apparatus. The conceptual diagram which shows the operation | movement aspect of a die height adjustment apparatus. The conceptual diagram which shows the operation | movement aspect of a die height adjustment apparatus. The whole front view which shows the conventional press machine notionally.

Explanation of symbols

1 ... Press machine,
3 ... slide,
4 ... slide drive means,
5 ... Point,
10 ... Slide adjuster (slide adjustment mechanism),
20: Overall drive motor (overall drive source),
20A: Overall power transmission means,
24. Tooth clutch (first clutch mechanism),
30: Individual drive motor (individual drive source),
30A: Individual power transmission means,
31 ... Individual drive unit,
34 ... Tooth clutch (second clutch mechanism),
40 ... Adjustment amount limiting means,
100: Die height adjusting device.

Claims (2)

A press machine having a slide driving means for driving a slide up and down and a plurality of points provided on the slide and connected to the slide driving means, is provided between the slide and the plurality of points. A die height adjusting device for a press machine, comprising a slide adjusting mechanism for adjusting a distance between the slide and the slide driving means.
An overall drive source for simultaneously driving all of the slide adjustment mechanisms;
An overall power transmission means for linking the overall drive source and the total number of the slide adjustment mechanisms;
A first clutch mechanism that is interposed in the overall power transmission means and that connects / disconnects a driving force from the overall drive source to the slide adjustment mechanism;
An individual drive source for individually driving the slide adjustment mechanism;
Individual power transmission means for individually linking the slide adjustment mechanism and the individual drive source;
A second clutch mechanism interposed in the individual power transmission means for connecting / disconnecting a driving force from the individual drive source to the slide adjustment mechanism;
A die height adjusting device for a press machine, comprising: 2. The die height adjustment of a press machine according to claim 1, further comprising an adjustment amount limiting means for mechanically limiting an adjustment amount in the slide adjustment mechanism when the slide adjustment mechanism is driven by the individual driving source. apparatus.

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