ES2638540T3 - Sliding lock device for machine presses - Google Patents

Abstract

A slider locking device (10) for a machine press (1) that locks a slider (2) of the machine press by locking a shaft member (11) that rotates in conjunction with a lifting operation from rotating and lowering of said slider (2), comprising: a flange member (12) mounted on and fixed to said shaft member (11) so as not to rotate with respect thereto, and comprising a flange portion (12b) which is parallel to a plane orthogonal to an axis of said shaft member (11); an annular main body member (14) fixed to a main frame (3) of said machine press (11), and comprising an opposing wall portion (26) opposing said flange portion (12b) with a some space between them; a plurality of retaining holes (15) formed in said opposing wall portion (26) of said main body member (14) parallel to said axis, and opposing said flange portion (12b); a plurality of pin members (16), each of which is installed in one of said plurality of retaining holes (15) so as to be displaceable; an auxiliary main body member (34) opposing said flange portion (12b) from a side opposite said plurality of retaining holes (15) and fixed to the main body member (14); a plurality of actuators (17) for driving said plurality of pin members (16), respectively, between an advanced position in which it is advanced towards said auxiliary main body member (34) and a retracted position in which it is withdrawn of said advanced position; and a plurality of stop engaging portions (18, 18A) formed on said flange portion (12b) at positions in a radial direction with respect to said axis that are the same as those of the pin members (16) and with fixed spaces therebetween in the circumferential direction, and a plurality of insertion openings (19, 19A) each formed as an arc between adjacent parts of the stop engaging parts (18, 18A); and adapted such that when, in order to lock said slider (2), the plurality of pin members (16) are all actuated driven towards their advanced positions by said plurality of actuators (17), at least one of them being inserted said pin members (16) in one of said insertion openings (19, 19A) and being able to stop at least one of said abutment engaging portions (18, 18A) in an end portion of said insertion opening (19 , 19A) with said pin member (16); characterized in that said slider locking device comprises: a plurality of support holes (36) which are formed in said auxiliary main body member (34) so as to allow end portions of said plurality of support members to pass through; pin (16) and wherein an end portion of the pin member (16) passing through said insertion opening (19, 19A) is inserted into said corresponding support hole (36) in such a manner as to support both ends of said pin member (16).

Description

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DESCRIPTION

Sliding lock device for machine presses

The present invention relates to a slide lock device for a machine press that is capable of stopping the machine press slide at a desired stop position or at a position in the vicinity thereof.

Sliding locking devices of various types have been implemented in practice such that, when repairs are made to a machine press, repairs to a die, the die is exchanged or the like, the downward movement of the Sliding of the press with respect to the main body of the press.

For example, the slide locking device disclosed in patent document # 1 comprises a main frame that is fixed to a main press body, a vertical screw shaft that passes through the main frame and has a coupling part in its lower end portion that can be coupled with the slide, a nut member that is rotatably supported on the main frame and threadedly engages with the screw shaft, a rotation adjustment mechanism that regulates the rotation of the shaft of screw and a rotary drive means or the like that rotatably drives the nut element and thereby causes the screw shaft to be raised and lowered.

And the sliding lock device of the servo press disclosed in patent document # 2 is a sliding locking device that can block, in any desired position, a large diameter helical gear that drives a slide to raise and lower to through an eccentric mechanism, coupling a coupling claw with the gear teeth of the helical gear.

In this slide locking device, three locking units are provided along the direction of the width of the helical gear teeth and the coupling claws that can be engaged in the groove portions between the gear teeth of the helical gear which are arranged at the lower ends of the blocking units, and these coupling claws are driven forward and backward by hydraulic actuators that are provided within the blocking units. When the slide must be locked, the helical gear is placed in a locked state and the slide is locked by operating the three locking units simultaneously and operating the three coupling claws towards their advanced positions, thereby coupling one of the claws of coupling in the groove part between the gear teeth and blocking the coupling claw with a ball locking mechanism that includes steel balls.

Patent document # 1: Patent publication open for public inspection JP Heisei 11-245100.

Patent document # 2: Patent publication open for public inspection JP 2007-245172.

Since, when the slide is locked with the slide lock device of Patent Document # 1, it is necessary to raise the screw shaft with the rotation drive means until the coupling part at the lower end of the screw shaft contact against the bottom surface of the slide, consequently the problems occur that the period of time necessary until the slide is blocked is so long, that a large space is required for installation in order to arrange a couple of devices Sliding block that are comparatively large on both sides of the slide, that the production cost is high because the structure of the locking device is complicated, and so on.

In the case of the slide device of Patent Document # 2, it is necessary to arrange the three locking units in the outer peripheral space around the helical gear and provide a construction for the union that fixes them firmly to the main frame of the press of machine In addition, a large space is required for the installation of the three locking units.

In order that the shape of the curved toothed surface of the coupling claws and the gear teeth are in linear contact when the coupling claws engage with the groove portions of the helical gear, the teeth are plastically deformed in a thorough manner of the gear concave inwards, and the quality of the settling between the helical gear and a pinion or gear that is aligned with it deteriorates, so that there is a fear of loss of durability. In addition, since this blocking unit has a complicated construction that includes two hydraulic chambers, two compression springs and a ball locking mechanism that has steel balls or the like, consequently its production cost is high. Document US2185551-A describes a security locking mechanism for a press according to the preamble of claim 1.

The objectives of the present invention are to provide a compact slide locking device, to provide a sliding lock device with which a construction for joining it to a machine press can be simplified, to provide a sliding lock device having a simple structure that is beneficial from the point of view of the cost of production, and so on.

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The invention is defined in claim 1.

With the constitution of the present invention as described in claim 1, various additional constitutions may be employed as described below.

(1) The insertion parts can be manufactured as circular arc-shaped insertion openings formed in the flange part, and the abutment coupling parts are constituted respectively by bridge wall parts that are formed between adjacent parts of the insertion openings in the form of a circular arc.

(2) In the present invention or in the (1) above, the actuators may be constituted with double-acting type fluid pressure cylinders respectively, and the pin members may be constituted by rod parts of the members of the piston rod of these fluid pressure cylinders, respectively.

(3) In the (1) above, the pin members have circular cross sections, and the end portions of the circular arc-shaped insertion openings are formed as half-cylinders to which the pin members are coupled, respectively.

(4) In the (3) above, as the plurality of pin members, six pin members are provided which are arranged in positions that divide the circumference into six equal parts; these six pin members are grouped into a first group of pin members that are arranged in positions that divide the circumference into three equal parts and a second group of pin members that are arranged in positions that divide the circumference into three parts equals; and when the six pin members are operated towards their advanced positions, three pin members of at least one of the first group of pin members and the second group of pin members pass through three of the insertion openings in circular arc shape

(5) In the (3) above, as the plurality of circular arc-shaped insertion openings, nine circular arc-shaped insertion openings are formed at intervals of 40 ° in the circumferential direction, and each of the openings of insertion in the form of a circular arc is formed in such a way that the pin member can move with respect thereto through 20 ° in the circumferential direction.

(6) In the (5) above, as the plurality of pin members, six pin members are provided; these six pin members are grouped into a first group of pin members that are arranged in positions that divide the circumference into three equal parts and a second group of pin members that are arranged in positions that divide the circumference into three parts they are also separated and with respect to the first group of pin members in a predetermined direction of rotation around the axis by the separation of 20 °; and when the six pin members are operated towards their advanced positions, three pin members of at least one of the first group of pin members and the second group of pin members pass through three of the insertion openings in circular arc shape

(7) in (1), a first detection means that detects the states when the pin members are in their retracted positions and a second detection means that detects the states when the pin members are in their advanced positions.

(8) In the present invention, the abutment coupling part may be constituted by a protruding part that protrudes a predetermined length from the flange surface of the flange part towards the retaining holes and the insertion parts may be constituted by Defined insertion spaces between adjacent pairs of the parts that protrude more toward the retaining holes than the flange surface.

(9) In the (1) or (8) above, the opposite wall part of the main body member is disposed more toward the main frame than the flange part.

In accordance with the present invention, the following advantageous effects can be obtained.

Accordingly, since the sliding lock device for a machine press according to the present invention includes the flange member that is attached to the rotating shaft member along with the operation of the slide, the main body member that is fixed to the main frame, the plurality of retention holes that are formed in the main body member, the plurality of pin members that are installed in the retention holes, the plurality of actuators that actuate the plurality of pin members between their advanced positions and retracted positions, and the plurality of abutment coupling parts formed in the flange member with fixed intervals therebetween in the circumferential direction and the plurality of insertion parts each formed between adjacent parts of the parts of Butt coupling, its overall structure is compact.

Since the flange member can be fixed in the machine press simply by attaching the tree member and also fixing the main body member to the main frame of the machine press, consequently, the assembly construction for the union to the Machine press has a simple structure. In addition, since it is arranged so that the rotation of the shaft member is blocked and the slide is thus blocked by the stopper engagement portions formed in the flange member that are received and stopped by the pin members that are they have moved to their advanced positions, the construction accordingly becomes simple, and this is advantageous from the point of view of the cost of production. Other advantageous effects obtained from the inventions of the dependent claims will be explained in detail in relation to the embodiments.

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Next, the invention will be described, by way of an example, with reference to the attached drawings, in which:

Figure 1 is an elevational view of a machine press and a slide locking device in accordance with the first embodiment of the present invention;

Figure 2 is a horizontal sectional view of the slide locking device for a machine press;

Figure 3 is a vertical sectional view of the slide locking device;

Figure 4 is a sectional view taken along lines IV-IV of Figure 3;

Figure 5 is a sectional view taken along the lines V-V of Figure 3;

Figure 6 is an explanatory figure showing a state in which a first group of pin members

they are in contact with the bridge wall parts, while a second group of pin members move towards their advanced positions;

Figure 7 is an explanatory figure showing a state in which the first group of pin members are in contact with the bridge wall parts, while the second group of pin members move towards their advanced positions;

Figure 8 is an explanatory figure showing a state in which both the first and second group of pin members move towards their advanced positions;

Fig. 9 is an explanatory figure for a second embodiment, showing a state in which a first group of pin members are in contact against the bridge wall parts, while a second group of pin members move towards their advanced positions;

Figure 10 is an explanatory figure showing a state in which the first group of pin members are in contact with the bridge wall parts, while the second group of pin members move towards their advanced positions for the second realization;

Figure 11 is an explanatory figure for the second embodiment, showing a state in which both the first

as the second group of pin members move to their advanced positions;

Figure 12 is an explanatory figure of the third embodiment, showing a state in which both the first

as the second group of pin members move to their advanced positions;

Figure 13 is an explanatory figure for the fourth embodiment, showing a state in which both the first

as the second group of pin members move to their advanced positions; Y

Figure 14 is a vertical sectional view of the main parts of a sliding lock device

according to the fifth embodiment.

Next, the invention will be explained on the basis of embodiments.

REALIZATION 1

The slider locking device for a machine press according to the present invention is a device that locks the slider of a machine press by blocking a rotating shaft member together with an operation of raising and lowering the slide of such way it can't rotate.

As shown in Figure 1, according to this embodiment, the machine press 1 is a crank press, and this machine press 1 comprises a main frame 3, a support 4, a slide 2 which is guided by the frame main 3 in order to raise and lower freely, a crankshaft 11 (this corresponds to the "tree member") that drives the slide 2 through a pair of connecting rods 5 in order to raise and lower a main gear 6 and a handwheel 7 that are fixed to the right-hand end portion of the crankshaft 11, a clutch mechanism 8, an electrically driven motor (not shown in the figures) that rotationally drives the main gear 6 by means of a plurality of gears, and so on. And a slide locking device 10 according to the present invention is attached to the left-end part of the crankshaft 11 and the main frame 3.

As shown in Figures 2 to 5, this slide locking device 10 comprises: an annular flange member 12 which is fixed on the shaft member 11 in order not to rotate with respect thereto; an annular main body member 14 that is fixed to the main frame 3 of the machine press 1; a plurality of retaining holes 15 (in this embodiment, six thereof) formed in the main body member 14; a plurality of pin members 16 (in this embodiment, six of them) adjusted in these six retaining holes 15 so that they can move therein in directions parallel to the X axis of the tree member 11; a plurality of actuators 17 (in this embodiment, six thereof) to drive these six pin members 16 between the advanced positions and the retracted positions; a plurality of stop coupling parts 18 (in this embodiment, nine thereof) formed in the flange part 12 with fixed intervals therebetween in the circumferential direction, and a plurality of insert parts 19 (in this embodiment, nine of them) each formed as an arc between adjacent parts of the abutment coupling parts 18.

The shaft member 11 has an axial extension part 11a that protrudes from the outer side of the main frame 3 of the machine press 1 outwardly to the outside a predetermined length.

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The flange member 12 comprises a prominent part 12a that is firmly fixed on the axial extension part 11a so that it cannot rotate with respect thereto, and a flange part 12b that is integrally formed with the end part outside of the prominent part 12a in the axial direction and which is also parallel to a plane orthogonal to the X axis of the shaft member 11. The thickness of the flange part 12b in the axial direction is set to a predetermined thickness (for example, from 30 to 40 mm).

The flange member 12 is limited in rotation by a key 11b in such a way that it cannot rotate in relation to the axial extension part 11a, and is also frictionally coupled to the axial extension part 11a so that it cannot move in relation thereto in the direction of the X axis by a cradle member 20 which is tightly fitted between a cuneiform groove 12c formed in the prominent part 12a and in the axial extension part 11a. The cradle member 20 is fixed by a bolt 23 to a pressure plate 22 that is in contact against the end surface of the axial extension part 11a and is fixed to the flange part 12b by a plurality of bolts 21 and is press down on the pressure plate 22 in the direction of the X axis so that it cannot exit.

The main body member 14 is an annular member that fits over the prominent part 12a with a certain clearance 24 that is left between them. The main body member 14 comprises an opposite wall part 26 which is disposed more towards the main frame 3 than the flange part 12b and which also opposes the flange part 12b with a space 25 (for example a space around 15 to 20 mm) that is left between them.

The main body member 14 has an annular fixing flange 14a that is in contact against the outer surface of the main frame 3, and, by this fixing flange 14a that is fixed to the main frame 3 by a plurality of bolts 14b, the body main 14 is fixed to the outer surface of main frame 3 of machine press 1.

In addition, the main body member 14 comprises: a fixing flange 14a; an outer circumferential side wall part 14c extending from the fixing flange 14a to a position farther out than the flange part 12b with an insignificant space remaining between it and the flange part 12b, an annular plate part 14d which is integrally formed with the outer circumferential side wall part 14c inside its base end (i.e., its end towards the main frame 3), a reinforcement wall part 14e that is integrally formed inside the outer circumferential side wall part 14c in an intermediate position in its direction of length and the opposite wall part 26 which is integrally formed between the annular plate part 14d and the reinforcement wall part 14e and which also opposes the part flange 12b from the side of the main frame 3 with a space that is left between them.

The opposite wall portion 26 has a plurality of wall portions 26a that form the retaining hole (in this embodiment, six) that are formed as rectangular columns (prisms) extending in the direction parallel to the X axis in the positions that divide the circumference centered around the X axis into a plurality of equal parts (in this embodiment, six parts).

Each of the retaining holes 15 is formed in a wall portion 26a that forms the corresponding retaining hole in order to extend parallel to the X axis and also in order to oppose the flange portion 12b. The six actuators 17 are members for actuating each of the six pin members 16 between an advanced position in which the flange part 12b is advanced and a retracted position in which it is removed from the advanced position.

In this embodiment, the actuators 17 are constructed as double-acting air cylinders, and the piston rod members 17a of these air cylinders have piston parts 17b and rod parts 17c, with the rod parts 17c of the piston rod members 17a constituting the pin members 16. The rod parts 17c are circular with cross section.

A locking plate 27 blocking up to the six cylinder holes 17d of the air cylinders 17 is disposed between the annular plate part 14d and the outer side surface of the main frame 3, and is fixed to the main body member 14 by a plurality of bolts 27a.

Each of the air cylinders 17 has an air operation chamber 28 for the forward movement defined in the cylinder hole 17d more towards the locking plate 27 than the piston part 17b, and an operation chamber of air 29 for the return movement defined in the cylinder bore 17d around the outer circumference of the rod portion 17c. The retaining hole 15 is defined by the cylinder hole 17d and by a rod insertion hole 17e which is formed in the rod side wall part of the wall portion 26a that forms the retaining hole and, when the member of pin 16 is in its retracted position, pin member 16 retracts to a state in which it does not protrude from retaining hole 15.

The air operation chamber 28 for forward movement is connected to a port 31 for the connection of the air duct through a shallow groove formed in the blocking plate 27 and an air passage 30 formed in the part of outer circumferential lateral wall 14c. And the air operation chamber 29 for

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the return movement is connected to a port 33 for the connection of the air duct through an air passage 32 formed in the outer circumferential side wall part 14c. And ports 31 and 33 of the six air cylinders 17 are connected to a source of pressurized air supply (not shown in the figures) by means of ducts or hoses. When pressurized air is supplied to the air operating chambers 28 for forward movement and the air pressure is vented from the air operating chambers 29 for the return movement, then the pin members 16 are driven into their positions. advanced; and, conversely, when the air pressure is vented from the air operating chambers 28 for forward movement and the pressurized air is supplied to the air operating chambers 29 for the return movement, then the pin members 16 are operated toward their retracted positions. However, the actuators 17 could also be constructed as double-acting oil pressure cylinders, or they could also be constructed as solenoid actuators.

A plurality of abutment engagement portions 18 (in this embodiment, nine) are formed on the flange portion 12b at positions in a radial direction with respect to the X axis which are the same as those of the pin members 16 with spaces fixed between them in the circumferential direction.

In the flange part 12b, a plurality of insertion parts 19 (in this embodiment, nine) are formed as an arc between adjacent parts of the abutment coupling portions 18.

In this embodiment, the insertion parts 19 are constituted by insertion openings 37 in the flange part 12b which are formed as circular arcs, and the abutment coupling parts 18 are constituted by bridge wall parts 38 which are formed between adjacent parts of the circular arc-shaped insertion openings 37. The circular-shaped insertion openings 37 are formed with a width in the radial direction such that the pin members 16 with insignificant clearances can be received that they leave around them and the end portions of the circular arc-shaped insertion openings 37 in the circumferential directions are formed with semi-cylindrical shapes such that the pin members 16 can be closely coupled therewith.

The circular arc-shaped insertion openings 37 are formed at intervals of 40 ° in the circumferential direction, and the circular-shaped insertion openings 37 are formed to be of a suitable size such that the pin members 16 they can move 20 ° in the circumferential direction (in other words, the circular arc-shaped insertion openings 37 can move relative to the pin members 16 to 20 °)

An auxiliary main body member 34 is provided on the outside of the flange part 21b, in order to oppose the flange part 12b on its side opposite the six retaining holes 15, and the auxiliary main body member 34 it can, for example, be fixed to the outer end surface of the main body member 14 by twelve screws 35. Six circular support holes 36 are formed in the main body auxiliary member 34 in positions that divide the circumference into six equal parts and these support holes 36 are configured so that they are able to pass the end portions of the six pin members 16.

When, during the repair of the machine press 1 or the exchange of its die, or if a problem or the like has occurred, the machine press 1 stops, and, in order to lock the slide 2 in a desired position or in a position close to it, the six pin members 16 are all driven to their advanced positions simultaneously by the six air cylinders 17, then it is possible that at least one of the pin members 16 enters one of the insertion parts 19 (i.e., circular arc-shaped insertion openings 37) and for at least one of the abutment coupling portions 18 (i.e., the bridge wall portions 38) in the end portion of this insertion part 19 to be received and stopped from the additional movement in the circumferential direction. At this time, when this at least one pin member 16 moves forward to its advanced position and enters the insertion opening in the form of a circular arc 27, the end portion of the pin member 16 enters and passes through of the corresponding support hole 36, and this is beneficial from the standpoint of resistance, since the pin member 16 is now in a state in which the two ends are supported.

As shown in Figures 6 to 8, in this embodiment, the six pin members 16 that are arranged in positions that divide the circumference into six equal parts can be grouped into a first group of pin members 16a that are arranged in some positions that divide the circumference into three equal parts and a second group of pin members 16b which are also arranged in positions that divide the circumference into three equal parts; and when the six pin members 16 are operated toward their advanced positions, the three pin members 16 of at least one of the first group of pin members 16a and the second group of pin members 16b (in this embodiment, the second group of pin members 16b) enter three of the circular arc-shaped insertion openings 37 and also enter their corresponding three support holes 36 and protrude outwardly from those support holes 36. At this time, the three remaining pin members 16, that is, the first group of pin members 16a, are in a contact state against the inner sides of the bridge wall portions 38, as shown for example in Figure 6 or in the figure 7.

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Directly after this, due to a load such as the weight of the slide 2 itself or the weight of a die or the like, the shaft member 11 rotates a small angle in the direction of forward rotation (i.e. the direction of rotation when the pressing process is performed) or in the direction of reverse rotation, and three of the abutment coupling parts 18 (ie, three of the bridge wall parts 38) come into contact and engage with the three pin members 16 of the second group of pin members 16b, such that the tree member 11 is retained in a state where rotation is prevented, and the slide 2 is locked and placed in the stopped state. When this happens, the three pin members 16 of the first group of pin members 16a also enter three other circular arc-shaped insertion openings 37 (ones other than the three circular-circular insertion openings 37 above) , and also enter the state of entering their corresponding support holes 36 (see Figure 8). In this case, the first group of pin members 16a are coupled with the end portions of their three circular arc-shaped insertion openings 37 in the direction of rotation clockwise in Figure 8, while that the second group of pin members 16b are coupled with the end portions of their three circular arc-shaped insertion openings 37 in the direction of rotation counterclockwise. Because of this, the tree member 11 is placed in a state in which it cannot rotate either forward or backward.

For each of the six pin members 16, a first proximity switch 41 (ie, a first detection means) is provided which detects the state in which the pin member 16 is in the retracted position, and a second proximity switch 42 (ie, a second detection means) that detects the state in which the pin member 16 is in the advanced position; and the detection signals of these first and second proximity switches 41 and 42 are provided to a control unit (not shown in the figures) which is used for the control related to the slide lock.

As shown in Figure 4, the first proximity switches 41 are attached to the switch union parts 41c which are normally bent from the union lugs 41b fixed by three screws 41a to the end surfaces of the side wall parts of the stem of the wall part forming the retaining hole 26, and signal lines 41d extending from these switches 41 to the control unit (not shown in the figures). The first proximity switches 41 are turned off when the pin members 16 are in their retracted positions and turn on when the pin members 16 are operated towards their advanced positions.

As shown in Figure 5, the second proximity switches 42 are attached to the switch junction portions 42c that are normally bent from the union lugs 42b fixed by four screws 42a to the end surface of the main body auxiliary member 34 and the signal lines 42d extending from these switches 42 to the control unit. The second proximity switches 42 are turned on when the pin members 16 are operated towards their advanced positions and pass through the circular arc-shaped insertion openings 37 and the support holes 36 and turn off when the pin members 16 do not protrude outward from the support holes 36.

Instead of the first and second proximity switches 41 and 42 above, it would also be acceptable to provide the use of limit switches of type contact, or photo switches that have light emitting parts and light receiving parts, or the like.

An annular fixing surface is formed in the outer circumferential part of the auxiliary main body member 34, and a cover plate 43 consisting of a thin metal plate that covers above the end surface of the auxiliary main body member 34 is fixed by a plurality of screws 43a to the annular fixing surface.

Since the main operation of the above slide lock device 10 is as explained above, the beneficial effects of the slide lock device 10 will be further explained below.

Since the insertion parts 19 are constituted by the circular arc-shaped insertion openings 37 which are formed in the flange part 12b, and the abutment coupling parts 18 are constituted by the bridge wall parts 38, in Consequently, it is possible to simplify the structure of the insertion parts 19 and the abutment coupling parts 18.

And, since the circular arc-shaped insertion openings 37 are holes within which the pin members 16 can move relatively 20 ° in the circumferential direction, and since, when the slide 2 is locked, the angle through from which the flange member 12 rotates until the bridge wall parts 38 are coupled with the pin members 16 is approximately 15 ° maximum, consequently it is possible to stop the slide 2 in a position in the vicinity of any position desired.

Since, when the pin members 16 move towards their advanced positions, the end portions of the pin members 16 enter the support holes 36 such that both ends of the pin members 16 are in a state of be supported, consequently this is advantageous from the point of

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view of the resistance of the pin members 16, and it is possible to make the diameters of the smaller pin members. Furthermore, since the actuators 17 are constructed as double-acting air cylinders and the pin members 16 are constituted by the rod parts 17c of their piston rod members 17a, consequently it is possible to construct the locking device of Slider 10 with a compact structure.

Since, when the slide 2 is locked, at least three of the pin members 16 initially enter the insertion openings in the form of a circular arc 37 and in the three support holes 36, and therefore the rotation of the member of flange 12 may be limited by these three pin members 16, consequently it is possible to reduce the diameters of the pin members 16, such that it is possible to construct the slide locking device 10 with a compact structure. Furthermore, since finally the remaining three pin members 16 also enter their corresponding insertion openings in the form of a circular arc 37 and in their corresponding three support holes 36, and therefore the shaft member 11 is put in a state if it is rotationally limited in such a way that it cannot rotate or forward or backward, consequently the slide 2 is limited in such a way that it cannot be raised or lowered, and is in a locked state in a safe manner.

Since the first and second proximity switches 41, 42 are provided which detect that the pin members 16 are in their retracted positions and are in their advanced positions, consequently it is possible to reliably detect the fact that the slide 2 is In the locked state.

Since this slide locking device 10 can be attached to the axial extension part 11a of the shaft member 11 and to the outer surface of the main frame 3 in the vicinity thereof, consequently, the construction for joining the locking device from slide 10 to machine press 1 becomes simple.

Since the slide locking device 10 includes the flange member 12, the main body member 14, the auxiliary main body member 34, the six air cylinders 17 which have a simple structure and are installed in the member of main body 14, and so on, consequently this is beneficial from the point of view of reducing the cost of production.

REALIZATION 2

This slide locking device 10 is an example in which the arrangement of the six pin members 16 is changed.

As shown in Figures 9 to 11, the six pin members 16 can be grouped into a first group of pin members 16a (three pin members) that are arranged in positions that divide the circumference into three equal parts, and a second group of pin members 16c (three pin members) that are also arranged in positions that divide the circumference into three equal parts, and that on the other hand are separated 20 ° around the axis in the direction of rotation in the opposite direction to the hands of the clock in Figure 9 with respect to the first group of pin members 16a.

When the six pin members 16 are operated toward their advanced positions, the three pin members of at least one of the first group of pin members 16a and the second group of pin members 16c (in this embodiment, the second group of pin members 16c) enter three of the circular arc-shaped insertion openings 37 and their corresponding three support holes 36 (see Figure 9 or Figure 10). After this, in a manner similar to the case of the first embodiment, the shaft member 11 rotates a small angle in the direction of forward rotation or in the direction of reverse rotation, three of the stop coupling parts 18 (is that is, the bridge wall portions 38) come into contact with and engage the second group of pin members 16c and the shaft member 11 is placed in a state of limited rotation, such that the slide 2 is locked and it is put in the stopped state. When this occurs, the first group of pin members 16a also pass through the same three circular arc-shaped insertion openings 37 and are put in the state of passing through their three support holes 36 (see figure eleven). Therefore, the first group of pin members 16a are coupled with the end portions of the three circular arc-shaped insertion openings 37 in the direction of rotation clockwise in Figure 11, while The second group of pin members 16c are coupled with the end portions of the same three circular arc-shaped insertion openings 37 in the direction of rotation counterclockwise. For this reason, the tree member 11 is placed in a state in which it cannot rotate either forward or backward.

REALIZATION 3

As shown in Figure 12, in this slide locking device 10, four pin members 16 are provided and are operated by four air cylinders 17. It should be understood that Figure 12 shows a state in which, finally, the four pin members 16 have been passed through four of the circular arc-shaped insertion openings 37 and through their four support holes 36. The pin members can be grouped into a first group of two pin members 16d which are placed on opposite sides of

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the axial extension part 11a, and a second group of two pin members 16e which are also placed on opposite sides of the axial extension part 11a.

When the slide 2 is to be locked, the first group of pin members 16d are passed through two of the circular arc-shaped insertion openings 37 and the two support holes 36 and, after the wall parts of bridge 38 have subsequently contacted these pin members 16 and have been brought into engagement therewith by a slight rotation of the tree member 11 in the direction of rotation forward or backward, the second group of pin members 16e is they pass through another pair of two circular arc-shaped insertion openings 37 and a pair of two support holes 36 that are different from the previous ones. As shown in Figure 12, the first group of pin members 16d are coupled with the end portions of their two circular arc-shaped insertion openings 37 in the direction of rotation clockwise, while the second group of pin members 16e are coupled with the end portions of their two circular arc-shaped insertion openings 37 in the direction of rotation counterclockwise. Because of this, the tree member 11 is placed in a state in which it cannot rotate either forward or backward.

REALIZATION 4

As shown in Figure 13, in this slide locking device 10, eight pin members 16 are provided and are operated by eight air cylinders 17. It should be understood that Figure 13 shows a state in which, finally, the eight pin members 16 have been passed through eight of the circular arc-shaped insertion openings 37 and through their eight support holes 36. The pin members may be grouped into a first group of pin members 16f ( four pin members) and a second group of 16g pin members (four pin members).

When the eight pin members 16f are operated towards their advanced positions, initially the first group of pin members 16f or the second group of pin members 16g are passed through four of the circular arc-shaped insertion openings 37 and four of the support holes 36, and, after four of the bridge wall portions 38 have subsequently been engaged against these four pin members 16 by slight rotation of the shaft member 11, then the four pin members 16 The remaining ones are passed through four more of the circular arc-shaped insertion openings 37 and four more of the support holes 36. In this way, the shaft member 11 is placed in a state where it cannot rotate or forward or backward.

REALIZATION 5

As shown in Figure 14, this slide lock device is an example in which, unlike the slide lock device 10 described above, a plurality of stop coupling portions 18A are provided (in this embodiment, nine ) and a plurality of insertion parts 19A (in this embodiment, nine). Each of the stopper coupling parts 18A consists of a protruding portion 50 that protrudes a predetermined distance towards the retaining holes 15 from the flange surface 12g of the flange portion 12f of the flange member 12A, and each of the insertion parts 19A consists of an insertion space 51 that is defined between a pair of adjacent projecting portions 50, more towards the retaining holes 15 than the flange surface 12g. In both end portions of the abutment coupling parts 18A in the circumferential direction, the semi-cylindrical coupling surfaces 18A that mate with the pin members 16 are defined.

It should be understood that Figure 14 is a vertical sectional view as seen from the axial direction outward, showing a cross section orthogonal to the X axis taken in a more inward position than the flange part 12f of the flange member 12A, and shows the state in which the six pin members 16 have finally engaged with six of the stop coupling parts 18A.

Next, some modified examples will be explained in which the above embodiments are partially altered.

(1) The number of insertion parts 19, 19A is not limited to nine; Any number around six to eight would also be acceptable.

(2) It is not necessary that the wall parts forming the retaining hole 26a be formed in the form of prisms; it would also be acceptable for them to be constituted by the single integral annular opposite wall part 26 having a plurality of retaining holes forming the wall parts, and for the six cylindrical holes 17d to be formed on the opposite wall part 26.

(3) It would also be possible to provide the flange member of the slide locking device, not at an end portion of the tree member, but halfway along the tree member.

(4) A machine press using the slide locking device of the present invention may be a crank press, and it could also be a crankless press to which an eccentric mechanism has been installed.

5

10

fifteen

twenty

25

30

35

Industrial applicability

The present invention provides a sliding lock device that locks the slide of a machine press.

Description of the numbers

one:

2:

3:

10:

eleven:

12:

12b:

12g:

14:

fifteen:

16:

16a:

16b, 16c: 17:

17a:

17c:

18, 18A:

19, 19a: 26:

26a:

3. 4:

36:

37:

38:

41:

42:

fifty:

51:

main frame sliding machine press

sliding lock device

crankshaft (tree member)

flange member

flange part

flange surface

main body member

retention hole

pin member

first group of pin members

second group of pin members

actuator

piston rod member

stem part

butt coupling parts

insertion parts

opposite wall part

wall part forming the retaining hole auxiliary main body member support hole

circular arc-shaped insertion opening bridge wall parts

first proximity switch (first detection means) second proximity switch (second detection means) outgoing insertion space.

Claims (10)

5 10 fifteen twenty 25 30 35 40 Four. Five fifty 55 60 65 1. A slide lock device (10) for a machine press (1) that blocks a slide (2) of the machine press blocking so as not to rotate a rotating shaft member (11) together with a machine operation raising and lowering of said slide (2), comprising: a flange member (12) mounted on and fixed to said shaft member (11) so as not to rotate with respect thereto, and comprising a flange portion (12b) that is parallel to an orthogonal plane to a axis of said tree member (11); an annular main body member (14) fixed to a main frame (3) of said machine press (11), and comprising an opposite wall part (26) that opposes said flange part (12b) with a certain space between them; a plurality of retaining holes (15) formed in said opposite wall portion (26) of said main body member (14) parallel to said axis, and opposing said flange portion (12b); a plurality of pin members (16), each of which is installed in one of said plurality of retaining holes (15) so that it can move; an auxiliary main body member (34) that opposes said flange portion (12b) from an opposite side to said plurality of retaining holes (15) and that is fixed to the main body member (14); a plurality of actuators (17) for actuating said plurality of pin members (16), respectively, between an advanced position in which said auxiliary main body member (34) is advanced and a retracted position in which it is removed of said advanced position; and a plurality of abutment coupling parts (18, 18A) formed in said flange part (12b) in positions in a radial direction with respect to said axis which are the same as those of the pin members (16) and with fixed spaces between them in the circumferential direction, and a plurality of insertion openings (19, 19A) each formed as an arc between adjacent parts of the abutment coupling parts (18, 18A); and adapted in such a way that when, in order to block said slide (2), the plurality of pin members (16) are all driven towards their advanced positions by said plurality of actuators (17), inserting at least one of said pin members (16) in one of said insertion openings (19, 19A) and being able to stop at least one of said stopper coupling parts (18, 18A) at an end portion of this insertion opening (19 , 19A) with said pin member (16); characterized in that said sliding locking device comprises: a plurality of support holes (36) that are formed in said auxiliary main body member (34) so that the end portions of said plurality of pin members (16) can pass and in which a part of end of the pin member (16) passing through said insertion opening (19, 19A) is inserted into said corresponding support hole (36) such that both ends of said pin member (16) are supported. 2. A slide locking device for a machine press according to claim 1, wherein said insertion openings (19, 19A) are circular arc-shaped insert openings (37) formed in said part of flange (12b), and said abutment coupling parts (18, 18A) are constituted, respectively, by bridge wall parts (38) that are formed between adjacent parts of said circular arc-shaped insertion openings (37 ). 3. A slide locking device for a machine press according to claim 1 or claim 2, wherein said actuators (17) are constituted with double-acting type fluid pressure cylinders, respectively, and said pin members (16) consist of rod parts (17c) of the piston rod members (17a) of these fluid pressure cylinders, respectively. 4. A slide locking device for a machine press according to claim 2, wherein said pin members (16) have circular cross sections, and end portions of said arc-shaped insert openings circular (37) that are formed as half cylinders for the coupling of the pin members (16), respectively. 5. A slide locking device for a machine press according to claim 4, wherein, as said plurality of pin members (16), six pin members are provided which are arranged in positions that divide the circumference in six equal parts; these six pin members are grouped into a first group of pin members, which are arranged in positions that divide the circle into three equal parts, and a second group of pin members, which are arranged in positions that divide the circle in three equal parts; and when said six pin members are operated towards their advanced positions, three pin members of at least one of the first group of pin members and the second group of pin members pass through three of the insertion openings in circular arc shape (37). 5 10 fifteen twenty 25 30 6. A slide locking device for a machine press according to claim 4, wherein as said plurality of circular arc-shaped insertion openings (37), nine circular arc-shaped insertion openings are formed at intervals of 40 ° in the circumferential direction, and each of the circular arc-shaped insertion openings is formed in such a way that the pin member can move relatively through the same 20 ° in the circumferential direction. 7. A slide locking device for a machine press according to claim 6, wherein, as said plurality of pin members (16), six pin members are provided; these six pin members are grouped into a first group of pin members, which are arranged in positions that divide the circle into three equal parts, and a second group of pin members, which are arranged in positions that divide the circle in three equal parts, and which on the other hand are separated with respect to said first group of pin members in a predetermined direction of rotation about said axis by said 20 ° separation; Y when said six pin members are driven towards their advanced positions, three pin members of at least one of the first group of pin members and the second group of pin members pass through three of the insertion openings in the form circular arc (37). 8. A slide locking device for a machine press according to claim 1, wherein a first detection means (41) is provided which detects the states when said pin members (16) are in their retracted positions , and a second detection means (42) that detects the states when said pin members (16) are in their advanced positions. 9. A slide locking device for a machine press according to claim 1, wherein said stop coupling part (18, 18A) is constituted by a protruding part (50) protruding a predetermined length from the flange surface (12g) of the flange part (12b) towards the retaining holes (15), and said insertion openings (19, 19A) are constituted by insertion spaces (51) defined between adjacent pairs of parts that they protrude more towards the retaining holes than said flange surface (12g). 10. A slide locking device for a machine press according to claim 1 or claim 9, wherein said opposite wall portion (26) of said main body member (14) is further disposed toward said frame main (3) than said flange part (12b).