JP7286260B2 - transfer press machine - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to a transfer press machine that presses a plurality of workpieces arranged in a horizontal row while intermittently conveying them in the horizontal direction by a transfer device.

Conventionally, this type of transfer press has a structure in which a plurality of separately removable die-supporting split blocks are arranged side by side, and the die is supported by these die-supporting split blocks (see, for example, Patent Document 1). ).

Japanese Patent Application Laid-Open No. 2003-39198 (Figs. 1 and 4)

However, in the above-described conventional transfer press, when changing the shape of a work, the difficult work of pulling out a plurality of die supporting divided blocks one by one in a narrow work space and replacing the die was forced. . Therefore, development of a transfer press machine that can easily replace dies is required.

The invention of claim 1, which has been made to solve the above problems, presses a plurality of cylindrical workpieces into the forming holes of a plurality of dies at once with a plurality of punches arranged in a horizontal row, and then presses them into a plurality of workpieces. A transfer press machine that repeats the operation of pushing out the plurality of dies above with knockout pins and moving above each adjacent die with a transfer device, comprising a laterally extending support beam and a lift above the support beam. a press machine platform having a ram that vertically penetrates the support beam, a plurality of push-up rods that move up and down in synchronism with the ram, and push up the plurality of knockout pins; and a support block supported by the support beam and having a plurality of upper and lower through holes for accommodating the plurality of dies and the plurality of knockout pins therein. , a plurality of base blocks obtained by dividing a part or the whole of the support block, each accommodating the plurality of dies and the plurality of knockout pins; and a horizontal row on the support beam. a plurality of slide bases arranged side by side to support the plurality of base blocks from below, and each of which is slidably movable between a first position and a second position in the front-rear direction; a plurality of vertical through-holes in which the knockout pins move up and down; and a plurality of base fixing portions for fixing the plurality of slide bases to the first positions.

In the invention of claim 2, the punch holder is divided in the horizontal direction corresponding to the plurality of base blocks, and a plurality of divided punches each supporting the punch and detachably attached to the ram. 2. The transfer press according to claim 1, further comprising a holder, and a pillar standing from each slide base and supporting each of the divided punch holders so as to be able to move up and down.

The invention of claim 3 is the transfer press machine of claim 1 or 2, wherein each of the slide bases can be separately removed from the press platform.

According to a fourth aspect of the present invention, the transfer device has a gripping mechanism that supports a plurality of pairs of fingers to be opened and closed by a pair of finger support rails that extend laterally on the support block and face each other in the front-rear direction. , the gripping mechanism is configured to reciprocate in a horizontal direction to grip and intermittently convey a plurality of works by the plurality of pairs of fingers, wherein the gripping mechanism corresponds to the plurality of base blocks, It is divided in a lateral direction into a plurality of divided gripping mechanisms, and each divided gripping mechanism includes a pair of divided rails divided from the pair of finger support rails, a plurality of pairs of the fingers, and the support block. 4. The transfer press according to any one of claims 1 to 3, further comprising a pair of slide engaging members attached to and laterally slidably supporting the pair of split rails. machine.

According to a fifth aspect of the present invention, each of the split gripping mechanisms is provided with a transport drive mechanism that is attached to the support block and reciprocates laterally on the pair of split rails by receiving power from a transport drive source. The transfer press machine according to claim 4.

The invention of claim 6 is the transfer press machine according to claim 5, wherein the plurality of divided gripping mechanisms include a plurality of types of divided gripping mechanisms having mutually different lateral sliding strokes of the fingers. .

According to a seventh aspect of the present invention, there are provided a plurality of rail connecting portions for connecting the split rails adjacent to each other in the lateral direction, and a transport drive mechanism for horizontally reciprocating the plurality of pairs of split rails by a common transport drive source. The transfer press machine according to claim 4, comprising:

According to the eighth aspect of the invention, the pair of split rails of part or all of the split gripping mechanism is a pair of lateral slide engagements that engage the pair of slide engagement members so as to be slidable in the lateral direction. and a pair of front-rear slide engagement rails that engage with the pair of lateral slide-engagement members so as to be slidable in the front-rear direction and support the plurality of pairs of fingers. 8. The transfer press according to any one of claims 4 to 7, further comprising an opening/closing drive mechanism that receives power from a source and moves the pair of front and rear slide engagement rails toward and away from each other. .

According to a ninth aspect of the present invention, a part or all of the plurality of divided gripping mechanisms has a front-rear slide support that supports the pair of slide engaging members so as to be movable in the front-rear direction together with the pair of divided rails. and an opening/closing drive mechanism that receives power from an opening/closing drive source and moves the pair of slide engagement members toward and away from each other. It is a transfer press machine.

The invention according to claim 10 has a plurality of spring members for urging each pair of said fingers to approach each other, and said each pair of fingers slidably contacts a workpiece or other member fitted to said punch. The transfer press machine according to any one of claims 4 to 7, which is opened and closed.

The invention of claim 11 is provided with a transfer support split block formed by detachably splitting a part of the base block and supporting the split gripping mechanism. It is a transfer press machine.

The invention of claim 12 comprises a plurality of die support division blocks which are formed by dividing the base block in the horizontal direction, each of which can be removed separately, and each of which accommodates one of the die and one of the knockout pins. The transfer support division block is provided separately from the plurality of die support division blocks, and above the transfer support division block is supported by the ram and moves up and down to move the work to the transfer support division block. 12. The transfer press according to claim 11, further comprising a dummy punch that is pressed against the upper surface to receive from the pair of fingers, temporarily hold the punch, and then transfer to the pair of fingers.

A thirteenth aspect of the invention comprises a plurality of die support division blocks which are formed by dividing the base block in the horizontal direction, each of which can be separately removed, and each of which accommodates one of the die and one of the knockout pins. 12. The transfer press according to claim 11, wherein a part of said plurality of die supporting divided blocks also serve as said transfer supporting divided blocks.

The invention according to claim 14 comprises a plurality of die support division blocks which are formed by dividing the base block in the horizontal direction, each of which is separately removable, and each of which accommodates one of the die and one of the knockout pins. A transfer press according to any one of claims 1 to 4.

In the transfer press machine of claim 1, part or all of the support block is divided into a plurality of base blocks each accommodating a plurality of dies and a plurality of knockout pins, and a plurality of slide bases capable of sliding back and forth. Therefore, when exchanging the die, the booth block can be pulled out from the press machine platform along with the slide base in the front-rear direction, and the die exchange work can be performed in a wider working space than before. As a result, the replacement work of the die can be performed more easily than before.

According to the configuration of claim 2, the base block that accommodates a plurality of dies and the divided punch holders that hold the punches can be pulled out from the press machine platform, so that it is possible to easily replace the punches together with the replacement of the dies. can be done.

According to the structure of claim 3, the base block accommodating a plurality of dies can be replaced with a new one for each slide base.

In the transfer press machine of claim 4, the gripping mechanism of the transfer device, which supports a plurality of pairs of fingers in a pair of finger support rails so as to be able to open and close, is laterally divided into a plurality of divided gripping mechanisms. It can be attached and detached separately for each mechanism. This facilitates the die replacement work including the attachment and detachment work of the transfer device.

Here, the plurality of divided rails may be connected by a rail connecting portion as in the structure of claim 7 and operated by a common driving source for transportation, or as in the structure of claim 5, the divided rails may be divided and gripped. A transport drive mechanism may be provided for operating the split rail for each mechanism. Further, in the case of the configuration of claim 5, as in the configuration of claim 6, even if a plurality of divided grasping mechanisms are included in a plurality of types of divided grasping mechanisms in which the lateral slide strokes of the fingers are different from each other. good. Specifically, when the workpiece is narrowed toward the downstream side and gradually becomes slim, the lateral slide stroke of the downstream finger is made smaller than the lateral slide stroke of the upstream finger. Accordingly, the space between adjacent fingers, between adjacent punches, and between adjacent dies can be narrowed to make the entire transfer press compact.

In addition, in the structure of Claim 5, the drive source for conveyance of the division|segmentation holding mechanism of one end part may be combined with the drive source for ram raising/lowering which drives a ram.

In order to open and close a plurality of pairs of fingers, for example, a plurality of spring members for urging each pair of fingers to approach each other are provided as in the configuration of claim 10. The slidable contact guide portion may slide laterally on the punch or the fitting member fitted to the punch to open each pair of fingers, and separate the pair of fingers from the punch or the fitting member to close. As in the configurations of claims 8 and 9, an opening/closing drive source for opening/closing the plurality of pairs of fingers may be provided.

In the transfer press of claim 11, since the transfer support split block that supports the split support mechanism can be removed from the support block, the split gripping mechanism can be removed from the transfer press along with the transfer support split block.

In the transfer presses of claims 12 and 14, the support block is divided into a plurality of die support split blocks each accommodating one die and one knockout pin, so each die support split block is replaced with a new one. can do. In addition, when the transfer support division block and the die support division block are provided separately as in claim 12, above the transfer support division block, there is a ram supported by a ram that moves up and down to transfer the workpiece. A dummy punch may be provided which is pressed against the upper surface of the support division block and received from a pair of fingers. Also, as in the transfer press machine of claim 13, a part of the plurality of die supporting divided blocks may also serve as the transfer supporting divided blocks.

Front view of a transfer press according to an embodiment of the present disclosure Side sectional view of a transfer press machine Enlarged front view of part of the transfer press Flat sectional view of transfer press machine Perspective view of multiple die sets for drawing and ironing Perspective view of die set for drawing and ironing and parts to be assembled with it Side cross-sectional view of the transport drive mechanism and the opening/closing drive mechanism Plan view of split transfer device Front view of split transfer device Front view of die set for blanking Top view of die set for blank machining Side section view of a die set for machining blanks Side view of die set pulled forward Top view of die set pulled forward

A transfer press machine 10A according to an embodiment of the present disclosure will be described below with reference to FIGS. 1 to 14. FIG. FIG. 1 shows a front view of a transfer press machine 10A of this embodiment as seen from the front. Hereinafter, the lateral direction of the transfer press machine 10A in FIG. 1 is simply referred to as "horizontal direction H1", the right side (right side in FIG. 1) when viewed from the front of the transfer press machine 10A is simply "right side", and the opposite side is simply referred to as "right side". Let's just say "left". Also, the direction orthogonal to the paper surface of FIG. 1 is simply referred to as "the front-rear direction H2".

The transfer press 10A is formed by assembling parts such as a plurality of die sets 21 and 22 to a press platform 11. As shown in FIG. The press machine platform 11 has a structure in which a support frame 12 is provided with a ram 20 that can move up and down. The support frame 12 includes a pair of side walls 12B standing from the base plate 12A and facing each other in the horizontal direction H1, a ceiling wall 12C extending between the upper ends of the pair of side walls 12B and parallel to the base plate 12A. A ram support wall 12D that spans between the rear edges of the pair of side walls 12B on the surfaces facing each other above the middle part in the vertical direction of the pair of side walls 12B, and near the lower ends of the pair of side walls 12B and a support beam 13 spanned between the positions. In the pair of side walls 12B, for example, a through window 12W penetrating in the horizontal direction H1 is formed at a position sandwiched between the ram support wall 12D and the support beam 13 from above and below.

The ram 20 is placed over the front surface of the ram support wall 12D and supported by a slide support mechanism (not shown) so as to be able to move up and down. A camshaft 15 for raising and lowering the ram 20 is spanned and rotatably supported between positions near the upper ends of the pair of side walls 12B. A pair of cams 15A, which are integrally rotatable with the camshaft 15, are vertically sandwiched between a pair of cam followers 15B supported by the ram 20. As shown in FIG.

The camshaft 15 is rotationally driven by a servomotor, which is a ram lifting drive source 14 attached to the upper right portion of the support frame 12 . Specifically, the end portion of the camshaft 15 protruding to the right side of the support frame 12 and the output rotary shaft of the servomotor, which is the ram lifting drive source 14, are connected via a pulley, a belt, or the like. A cam shaft 15 is rotationally driven by a ram lifting drive source 14 . As the camshaft 15 rotates, the ram 20 moves up and down.

A vertically extending relay shaft 16 is provided on the left side of the support frame 12 and is rotatably supported. Below the support beam 13, a bottom camshaft 17 is rotatably supported across a pair of side walls 12B. The camshaft 15 and relay shaft 16 are connected via a bevel gear 16G, and the bottom camshaft 17 and relay shaft 16 are connected via a bevel gear (not shown). In addition, the bottom camshaft 17 is provided with a plurality of cams 17A so as to be capable of rotating integrally therewith. As a result, the pair of cams 15A of the camshaft 15 and the plurality of cams 17A of the bottom camshaft 17 rotate synchronously.

As shown in FIG. 2, the support beam 13 is formed with a through hole 13A penetrating in the vertical direction at an intermediate portion in the front-rear direction H2. The through-hole 13A may be elongated in the horizontal direction H1 or slit-shaped, or may be formed in plurality in the horizontal direction H1.

As shown in FIG. 1, a pedestal plate 18 is laid on the upper surface of the support beam 13 . As shown in FIG. 3, the base plate 18 is divided, for example, corresponding to a plurality of die sets 21 and 22, each of which is detachably fixed to the support beam 13 with bolts as shown in FIG. . Above the through-holes 13A of the support beams 13 in the base plate 18, a plurality of through-holes 18A penetrating the base plate 18 in the vertical direction are arranged in a horizontal row at regular intervals (see FIG. 14). Push-up rods 19 are movably supported in the plurality of through holes 18A except for some of them. The lower ends of the push-up rods 19 are in contact with the cams 17A of the bottom camshaft 17, as shown in FIG. As a result, the push-up rods 19 move up and down in synchronization with the ram 20 . Further, the push-up rod 19 is set so that its upper surface is substantially flush with the upper surface of the base plate 18 when positioned at the top dead center, for example.

The above is the description of the structure of the press platform 11 . In the transfer press machine 10A of the present embodiment, the ram lifting drive source 14, which is the drive source for the ram 20, also serves as the drive source for the push-up rod 19, but may be provided separately. Specifically, each push-up rod 19 may be provided with a servomotor as a drive source, and the rotational output of the servomotor may be converted into linear movement of the push-up rod 19 by a ball screw mechanism, a rack and pinion mechanism, or the like. good.

Next, a plurality of die sets 21 and 22 will be explained. As shown in FIGS. 2 and 3, each of the die sets 21 and 22 includes a slide base 24 detachably fixed on the base plate 18, a pair of support columns 25 extending and retracting from the slide base 24, and a split punch holder 26 supported by a pair of struts 25 and detachably fixed to the ram 20 . Also, as shown in FIG. 3, the plurality of die sets 21 and 22 are arranged in a horizontal row, with only one die set 21 for blanking at the left end and a plurality of others (for example, three die sets). ) is a die set 22 for drawing and ironing.

The drawing and ironing die set 22 and the mechanism assembled therewith will be described in detail below, and then the blanking die set 21 and the mechanism assembled therewith will only differ in configuration from the drawing and ironing die set 22. I will explain.

As shown in FIG. 6, the slide base 24 of the die set 22 for drawing and ironing has a structure in which a bank portion 24Y protrudes upward from the rear portion of a thick plate-like bed portion 24Z that is superimposed on the upper surface of the base plate 18. None, the shape viewed from the horizontal direction H1 is substantially L-shaped. In addition, laterally elongated engagement holes 24A are formed in the front and rear surfaces of the slide base 24 near the lower end. Then, as shown in FIG. 2, the fixed block 29 is fixed to the base plate 18 with bolts B1 in a state in which the protrusions 29A of the plurality of fixed blocks 29 are engaged with the engagement holes 24A. More specifically, a projection (not shown) protrudes from the edge of the lower surface of the fixed block 29 on the side away from the projection 29A. pushed downwards by The slide base 24 is fixed to the base plate 18 by friction with the base plate 18 and contact with the fixing block 29 .

Further, a plurality of upper and lower through holes 24B are provided on the same axis as the through holes 18A of the base plate 18 at an intermediate portion of the bed portion 24Z in the front-rear direction H2. The vertical through-hole 24B has an inner diameter equal to or slightly smaller than the inner diameter of the through-hole 18A. In addition, in the transfer press machine 10A of the present embodiment, for example, five vertical through holes 24B are provided in a horizontal row. 24B is used as a guide hole for the knockout pin 35 .

As shown in FIG. 2, the knockout pin 35 is divided into a lower rod 33 and an upper rod 34. The lower rod 33 is mainly accommodated in the vertical through hole 24B and supported by the push-up rod 19 from below. ing. The lower rod 33 and the vertical through-hole 24B have the same axial length, and when the push-up rod 19 is positioned at the top dead center, the upper and lower surfaces of the lower rod 33 are aligned with the upper and lower surfaces of the bed portion 24Z. (The arrangement of the lower rod 33 at this time is called "top dead center of the lower rod 33").

An engagement groove 33M is formed at an intermediate position in the axial direction of the lower rod 33, and a shaft insertion hole 24S is formed in the inner surface of the vertical through hole 24B at a position where the lower rod 33 faces the engagement groove 33M at the top dead center. is open. The shaft insertion hole 24S extends so as to communicate between the front surface of the bed portion 24Z and the engagement groove 33M, and the engagement shaft 24R is inserted therein. A nut 24N is fixed to the opening edge of the shaft insertion hole 24S on the front surface of the bed portion 24Z, and a screw portion formed at the proximal end portion of the engaging shaft 24R is screwed into the nut 24N to engage. By engaging the tip of the joint shaft 24R with the engagement groove 33M, the lower rod 33 can be fixed at the top dead center.

Then, when the transfer press machine 10A is operated, the engagement of the engagement shaft 24R is loosened so that the engagement between the engagement shaft 24R and the engagement groove 33M is released, or the shaft insertion hole 24S is engaged. When the coupling shaft 24R is pulled out and the die set 22 is slid forward from the base plate 18 as will be described later, the engagement shaft 24R is engaged with the engagement groove 33M and the lower rod 33 is inserted into the vertical through hole 24B. Fixed.

In this embodiment, the lower rod 33 of the leftmost vertical through-hole 24B, which is not provided with the push-up rod 19, is inserted into the vertical through-hole 24B by the engaging shaft 24R even during operation of the transfer press 10A. Fixed. Further, in this embodiment, the push-up rod 19 is not provided below the vertical through-hole 24B where the use of the push-up rod 19 is not required. You may make it possible to go up and down with . Alternatively, the lower rod 33 may be removed from the unused upper and lower through holes 24B.

As shown in FIG. 6, a plurality of rail protrusions 24T are formed on the upper surface of the bed portion 24Z. The rail protrusions 24T have a laterally long rectangular cross section, extend in the front-rear direction H2, and are arranged at regular intervals in the lateral direction H1. Square grooves 24L1 are formed between adjacent rail protrusions 24T, and stepped recesses 24L2 are formed by halving the square grooves 24L1 in the width direction at both ends of the rail protrusions 24T at both ends. ing. Further, the upper and lower through-holes 24B described above are opened at the center of the upper surface of each rail protrusion 24T in the width direction.

As shown in FIG. 5, on the upper surface of the bed portion 24Z, a transfer support division block 31 is attached on the left end rail protrusion 24T, and a die support division block is attached on the other rail protrusions 24T. 32 is attached. As shown in FIG. 6, the die support split block 32 has a rectangular parallelepiped with an upper rear corner portion cut off, and has an engagement groove 32M on the lower surface with which the rail protrusion 24T just engages. , the size of which is obtained by dividing the upper surface of the bed portion 24Z into five equal parts in the horizontal direction H1, and the front-rear length thereof is substantially the same as the front-rear length of the upper surface of the bed portion 24Z. Further, the transfer support division block 31, like the die support division block 32, has a substantially rectangular parallelepiped shape as a whole and has an engagement groove 31M on its lower surface.

As shown in FIG. 5, the transfer support split block 31 and the die support split block 32 are engaged with the rail protrusions 24T in the engagement grooves 31M and 32M, and the rear ends are pressed against the embankments 24Y of the slide base 24. and positioned on the slide base 24 . As shown in FIG. 2, the transfer support split block 31 and the die support split block 32 are attached to the slide base 24 by bolts B2 passing vertically through them and a plurality of stop plates 36 applied to their outer surfaces. Fixed.

The structures of the transfer support division block 31 and the die support division block 32 will be described below on the assumption that they are fixed as described above.

As shown in FIG. 2, the die support split block 32 is formed with an upper and lower through-hole 32B coaxially with the upper and lower through-hole 24B. It is designed to be That is, the die support division block 32 functions as a die holder. The die 92 has a cylindrical shape and has a forming hole 92A inside. The upper rod 34 is supported from below by the push-up rod 19 via the lower rod 33 and moves up and down within the molding hole 92A. Further, the upper rod 34 has a flange 34F at its lower end to prevent it from coming off.

As shown in FIG. 6 , a mount 40 is fixed to the upper surface of the transfer support split block 31 . The pedestal 40 has a structure in which upper ends of a pair of opposing walls 40A that face each other in the front-rear direction H2 are connected by a ceiling wall 40B. Groove-shaped slide engagement members 41 extending in the horizontal direction H1 are fixed to the lower ends of the opposing surfaces of the pair of opposing walls 40A. , and slides by the width of the transfer support division block 31, for example. Specifically, the pair of slide engaging members 41 has a groove-shaped structure having groove openings on mutually opposing sides. The lateral slide engaging member 42 is composed of a rectangular bar-shaped slider 42A that is slidably engaged with the slide engaging member 41, and a supporting member 42B to which the slider 42A is fixed. The support member 42B has a strip portion 42C extending in the horizontal direction H1 and having a width direction facing the front-rear direction H2.

Further, as shown in FIG. 6, the total length of the horizontal slide engaging member 42 in the horizontal direction H1 is slightly shorter than the horizontal width of the slide base 24. As shown in FIG. When the pair of lateral slide engaging members 42 are positioned at the right end of the slide stroke in the lateral direction H1, the upper surface of the transfer support split block 31 and the upper surfaces of the four die support split blocks 32 on the right side thereof. overlaps with Also, when the pair of lateral slide engaging members 42 are positioned at the left end of the slide stroke in the lateral direction H1, the upper surface of the transfer support split block 31 and the upper surfaces of the three die support split blocks 32 on the right side thereof are positioned. It overlaps with the upper surface of one die support division block 32 on the left side.

As shown in FIGS. 8 and 9, a pair of strip-like front and rear slide engagement rails 46 are provided on the pair of lateral slide engagement members 42 (more specifically, on the strip portion 42C). A split rail 47 according to the present disclosure is formed from the lateral slide engagement member 42 and the front/rear slide engagement rail 46 which are superimposed. Also, the longitudinal slide engagement rail 46 and the lateral slide engagement member 42 are connected at two locations in the longitudinal direction by a pair of slide coupling units 48 so that the longitudinal slide engagement rail 46 is connected to the lateral slide engagement member 42 . and slides in the front-rear direction H2.

A plurality of finger support recesses 46A (see FIG. 7) extending in the front-rear direction H2 are formed in the pair of front-rear slide engagement rails 46 and are arranged at regular intervals in the longitudinal direction. is assembled. Further, as shown in FIG. 8, a plurality of pairs (for example, five pairs) of fingers 49 are arranged at regular intervals in the horizontal direction H1 and protrude from the pair of front and rear slide engagement rails 46 toward the sides approaching each other. None, below the space between the opposing fingers 49 is the opening of the forming hole 92A of the die 92.

The plurality of pairs of fingers 49 are slidably driven in the horizontal direction H1 by a servomotor, which is a transfer drive source 98 shown in FIG. driven.

A transport drive mechanism 100 for sliding the plurality of pairs of fingers 49 in the horizontal direction H1 by means of a transport drive source 98 is constructed as follows. That is, a round hole 31E penetrating in the front-rear direction is formed in the upper part of the transfer support division block 31, and the transport drive shaft 44S arranged in the inner central part thereof is driven by a sleeve 44T fitted in the round hole 31E. rotatably supported. One end of the transfer drive shaft 44S is connected to a rotation output portion of a servomotor serving as a transfer drive source 98 attached to the front surface of the transfer support division block 31 . In addition, a pair of pinions 44 are rotatably provided at two locations below the pair of lateral slide engaging members 42 on the transport drive shaft 44S. The pinion 44 has a structure in which a plurality of pins 44B are interposed between a pair of discs 44A that rotate integrally with the transport drive shaft 44S. The plurality of pins 44B are arranged at positions dividing an imaginary circle around the center of rotation of the disc 44A into a plurality of equal parts, and function as a plurality of teeth of the pinion 44 . A pair of racks 43 fixed to the lateral slide engaging member 42 are protruded into the circular holes 31E through slits formed in the transfer support division block 31, and pins as a plurality of teeth of the pinion 44 are inserted. It meshes with 44B. As a result, the pair of lateral slide engaging members 42 slide in the lateral direction H1 by receiving power from the transport drive source 98 . Moreover, the slide stroke is the same as the interval between the center axes of the die 92 . As a result, the drive source 98 for transport drives the pair of laterally sliding engaging members 42 and between the plurality of pairs of fingers 49 to slide in the lateral direction H1.

On the other hand, the opening/closing driving mechanism 101 for opening and closing the plurality of pairs of fingers 49 in the front-rear direction H2 by the opening/closing driving source 99 is constructed as follows. That is, the ball screw 50 extending in the front-rear direction is spanned between the pair of opposing walls 40A of the mount 40 and rotatably supported. One end of the ball screw 50 is connected to a rotation output portion of a servomotor serving as the drive source 99 for opening and closing attached to the front surface of the transfer support division block 31 . The ball screw 50 is provided with a pair of screw portions 50A and 50B whose helix directions are reversed before and after an intermediate position in the longitudinal direction. 51 are screwed together. A pair of support rails 53 extending in the horizontal direction H1 are fixed to the lower surface of the ceiling wall 40B of the pedestal 40 at positions directly above the pair of horizontal slide engaging members 42. A pair of ball nuts 51 are fixed to a pair of rail engaging members 52 slidably supported by 53 .

A pair of cam followers 54 are attached to the pair of rail engaging members 52 . The cam followers 54 have rollers 54R that rotate around a rotation shaft extending in the vertical direction. The pair of rollers 54R of the pair of cam followers 54 protrude downward from the respective rail engaging members 52 and rotate in the front-rear direction H2. are facing each other. Further, from the upper surface of the front-rear slide engaging rail 46, an engaging ridge 55 extending in the horizontal direction H1 and having a rectangular cross section projects. The engagement ridge 55 is formed by fixing a so-called key member to the front-rear slide engagement rail 46 . The engagement ridge 55 of each front-rear slide engagement rail 46 is sandwiched between the pair of rollers 54R of each rail engagement member 52 in the front-rear direction H2. As a result, the drive source 99 for opening and closing opens and closes between the pair of front and rear sliding engagement rails 46 and between the plurality of pairs of fingers 49 .

Further, the driving source 98 for carrying and the driving source 99 for opening and closing operate in synchronization with the driving source 14 for raising and lowering the ram, so that a plurality of pairs of fingers 49 intermittently move a plurality of workpieces W from the left as follows. transported to the right. After moving to the left end of the slide stroke in the lateral direction H1 in the opened state of the plural pairs of fingers 49, the plural pairs of fingers 49 are closed. At this time, a plurality of workpieces W are arranged between the plurality of pairs of fingers 49 and these workpieces W are gripped by the plurality of pairs of fingers 49 . In this state, the plurality of pairs of fingers 49 move to the right end of the slide stroke in the horizontal direction H1, and then the plurality of pairs of fingers 49 are opened to return to the initial state. Thereafter, this operation is repeated, and a plurality of works W are intermittently conveyed from left to right.

Next, the split punch holder 26 of the die set 22 for drawing and ironing will be described. The split punch holder 26 is obtained by splitting the entire punch holder 115 (see FIG. 3) of the transfer press 10A in the horizontal direction H1. The divided punch holder 26 has a general mechanism for holding the punches 91, and arranges the plurality of punches 91 in the horizontal direction H1 at regular intervals on the same axis as the dies 92 of the plurality of die supporting divided blocks 32. to hold. As shown in FIG. 2, the split punch holder 26 is bolted to the lower end of the ram 20, and as the ram 20 moves up and down, the plurality of punches 91 advance and retreat into the forming holes 92A of the plurality of dies 92. As shown in FIG. Further, as shown in FIG. 3, a dummy punch 93 is provided on the left side surface of the divided punch holder 26. As shown in FIG. The dummy punches 93 are arranged at the left end at a position away from the punches 91 at the same interval as the intervals between the punches 91 . A notch 40C (see FIG. 6) through which the dummy punch 93 passes is formed in the ceiling wall 40B of the mount 40. As shown in FIG. Furthermore, the dummy punch 93 is urged downward by an elastic member (not shown), and while the punch 91 is protruding into the forming hole 92A, the dummy punch 93 continues to press the workpiece W against the upper surface of the transfer support division block 31, When the dummy punch 91 is separated from the work W, the dummy punch 93 is also separated from the work W. Further, as shown in FIG. 3, a scraping punch 93X is provided on the right side of the split punch holder 26 of the die set 22 for drawing and ironing at the right end. Then, the work W that has been pressed is removed from the fingers 49 by the removal punch 93X as shown in FIG. 1, guided downward by the chute 93G, and collected in a collection box (not shown).

The above is the description of the die set 22 for drawing and ironing and the parts assembled therewith. Next, the structure of the die set 21 for blanking and the parts assembled therewith will be described with reference to FIGS. 10 to 12. FIG. As shown in FIGS. 10 and 11, the slide base 24 of the die set 21 for blank processing is substantially flush with the upper surfaces of the transfer support division block 31 and the die support division block 32 of the die set 22 for drawing and ironing. The right end of the slide base 24 is recessed in a stepped manner, and the dummy block 32D is assembled there. Also, as shown in FIG. 10, a die support table 85 is attached to the upper surface of the slide base 24 . The die support table 85 includes a support plate 85B that spans between upper end portions of a pair of leg portions 85A (not shown) facing each other in the front-rear direction. A slit 85S is formed at an intermediate position in the vertical direction of the support plate 85B, and a strip-shaped sheet metal V is passed through the slit 85S. Then, the metal sheet V (see FIG. 12) is intermittently fed in synchronization with the vertical motion of the ram 20 . A punching die 83 and a drawing die 84 shown in FIG. 12 are vertically stacked under the slit 85S of the support plate 85B. The upper punching die 83 is provided with a circular or oval punching hole 83A, and the lower drawing die 84 is provided with a drawing hole 84A that is one size smaller than the punching hole 83A. Further, the divided punch holder 26 holds a cylindrical punch 81 and a drawing punch 82 fitted inside thereof. When the ram 20 is lowered, the punch 81 pushes a part of the sheet metal V into the punching hole 83A of the punching die 83 to punch out a blank material. A cylindrical work W is formed by pushing it into and passing it through.

As a configuration for moving the drawing punch 82 up and down with respect to the punching punch 81, for example, the ram 20 is provided with a ball screw mechanism or a crank mechanism driven by a drive source (not shown), and the output portion of the drawing punch 82 is provided. , a seesaw-shaped lever (not shown) is provided on the side wall 12B of the support frame 12 shown in FIG. A configuration in which one end of the lever is engaged with a cam groove formed on the outer peripheral surface of the lever is conceivable.

As shown in FIG. 10, the slide base 24 of the die set 21 has an overhanging portion 24H extending leftward from the upper left end, and a servomotor serving as a transport drive source 97 of the transport drive mechanism 102 is mounted on the projecting portion 24H. are placed. Further, as shown in FIG. 11, a drive shaft 97S is connected to the rotation output portion of the transfer drive source 97, and a pair of pinions 44 are fixed to the drive shaft 97S so as to be integrally rotatable. 12, a pair of split rails 86 are slidably supported in the horizontal direction H1 below the support plate 85B of the die support table 85, and a rack (not shown) fixed to the split rails 86 is supported. and a pair of pinions 44 are in mesh. A pair of fingers 79 are supported on the split rail 86 so as to face each other. Then, the pair of fingers 79 are slidably driven in the horizontal direction H1 by the drive source 97 for transportation.

In addition, the slide stroke in the horizontal direction H1 of the pair of fingers 79 provided in the die set 21 for blank processing corresponds to the horizontal direction H1 of the plurality of pairs of fingers 49 provided in the die set 22 for drawing and ironing. It is longer than the slide stroke, and at one end of the slide stroke, the pair of fingers 79 are opposed to each other across the area directly below the drawing punch 82, and at the other end of the slide stroke, the dummy punch in the adjacent die set 22. They face each other across the region below 93 .

Furthermore, the die set 21 for blank processing does not have the opening/closing drive mechanism 101 described above, and the pair of fingers 79 are supported so as to be movable back and forth with respect to the split rail 86 and are built in the split rail 86. A pair of spring members 87 are biased toward each other. Then, the work W is pushed between the pair of fingers 79 by the drawing punch 82 , and the upper end of the work W is engaged with the stepped portion 79 D formed on the opposing surfaces of the pair of fingers 79 , so that the work W is removed from the drawing punch 82 . A workpiece W is removed and held by a pair of fingers 79 . The pair of fingers 79 hold the work W and convey the work W onto the transfer support split block 31 of the adjacent die set 22 for drawing and ironing. After being pressed onto the dividing block 31 , it returns to below the drawing punch 82 . In this manner, the work W produced from the sheet metal V is intermittently conveyed, and the work W is drawn or ironed by the punches 91 and the dies 92 of the plurality of die sets 22 for drawing and ironing. . That is, the pair of fingers 79 are opened and closed by sliding contact with the work W. As shown in FIG.

As shown in FIG. 3, a cylindrical stripper 91S for removing the work W is fitted to a part of the punches 91 of the plurality of die sets 22 for drawing and ironing the work W. . Then, for example, the stripper 91S is moved up and down with respect to the punch 91 by a drive mechanism provided on the rear surface of the slide base 24, and the workpiece W is removed from the punch 91. As shown in FIG. As for the punch 91 without the stripper 91S, the workpiece W is separated from the punch 91 by the stepped portion provided on the finger 49, similar to the stepped portion 79D of the finger 79 of the die set 21 for blanking. . It should be noted that the plurality of pairs of fingers 49 may be opened and closed by being urged by a spring member and brought into sliding contact with the stripper 91S without the open/close driving mechanism, similarly to the fingers 79. FIG.

In the above description, the die set 22 for drawing and ironing and the die set 21 for blanking are separately described. The rail 47 and the pair of split rails 86 are linearly arranged to form a pair of finger support rails 105, and the finger support rails 105 form a gripping mechanism 111 that supports a plurality of pairs of fingers 49 and 79. . The transfer device 110 having the gripping mechanism 111 extends in the entire horizontal direction H1 of the transfer press 10A. and press-worked a plurality of times.

5, the base block 94 arranged on the entire upper surface of the bed portion 24Z of the die set 22 is divided into the transfer support division block 31 and the plurality of die support divisions in the horizontal direction H1. It can also be said that the block 32 is divided into a plurality of equal parts. Further, as shown in FIG. 3, a part of the support block 95 arranged on the pedestal plate 18 and extending in the horizontal direction H1 can be regarded as being divided into a plurality of base blocks 94 and dummy blocks 32D, It can also be considered that the support block 95 is divided into a plurality of slide bases 24, a plurality of base blocks 94, and dummy blocks 32D.

In this embodiment, the support block 95 is divided, and the gripping mechanism 111 includes a split gripping mechanism 112 for the die set 21 for blanking and a split gripping mechanism for a plurality of die sets 22 for drawing and ironing. 113, the transfer device 110 can be separately attached to each die set 21, 22, and the punch 91, the die 92, etc. can be easily replaced. The die sets 21 and 22 can be pulled forward from the press platform 11 in the transfer press 10A of the present embodiment in order to facilitate replacement of the punch 91, the die 92, and the like.

That is, as shown in FIG. 4, a pair of conveyor support blocks 27 are attached to the front surface of the base plate 18 for each of the die sets 21 and 22, and the roller conveyors 28 are attached to the conveyor support blocks 27. can be done. As shown in FIG. 6, the roller conveyor 28 has a support body 28H formed by bending a sheet metal into a groove shape and extending in the front-rear direction H2. and arranged in the front-rear direction H2, and a stopper 28F protrudes from the front end of the upper surface of the support body 28H. A rear protrusion 28T protrudes rearward from the upper portion of the rear end portion of the support body 28H, and locking protrusions 28K protrude from both side surfaces of the rear protrusion 28T. On the other hand, the conveyor support block 27 has a structure in which a front opening 27W is provided by notching the center of the front surface of a box whose upper surface is open from the upper end to the middle position in the vertical direction. Then, the rear protrusion 28T of the roller conveyor 28 is inserted into the front opening 27W of the conveyor support block 27 from above, and the pair of locking protrusions 28K are engaged with the opening edges 27K on both sides of the front opening 27W from the inside, Furthermore, the lower contact surface 28M of the rear protrusion 28T of the support body 28H contacts the lower front surface of the conveyor support block 27. As shown in FIG. As a result, as shown in FIG. 13, the roller conveyor 28 is supported in a cantilever manner by the conveyor support block 27, and the upper ends of the plurality of rollers 28R of the roller conveyor 28 are arranged at the same height as the upper surface of the base plate 18. be.

Further, as shown in FIG. 14, a plurality of air ejection ports 18B are opened in a portion of the upper surface of the base plate 18 that is covered with the die sets 21 and 22, and when a valve (not shown) is opened, the base plate Compressed air is jetted from an air jetting port 18B through a flow path formed inside 18 . Thereby, an air layer is formed between the die sets 21, 22 and the base plate 18, and the die sets 21, 22 can be smoothly slid in the front-rear direction H2. Further, as shown in FIG. 3, on both sides of the die sets 21 and 22 on the upper surface of the base plate 18, the die sets 21 and 22 are restricted from moving in the lateral direction H1 and guided in the front-rear direction H2. A guide ridge 18 is provided. With the above configuration, if the fixed block 29 is removed and compressed air is jetted from the air jetting port 18B, as shown in FIGS. be able to.

The description of the configuration of the transfer press machine 10A of the present embodiment is as above. Next, the effects of this transfer press machine 10A will be described. In the transfer press machine 10A of the present embodiment, a plurality of cylindrical workpieces W are pressed into the forming holes 92A of a plurality of dies 92 at once by a plurality of punches 91 arranged in a horizontal row, and then pressed by a plurality of knockout pins. The operation of extruding above a plurality of dies 92 at 35, gripping with a plurality of pairs of fingers 49 and conveying above each adjacent die 92 is repeated.

Here, the final shape of the cylindrical work W may be a cylindrical shape, an elliptical cylindrical shape, or a square cylindrical shape. can be done. At that time, it is necessary to remove the transfer device 110 . On the other hand, the gripping mechanism 111 of the transfer device 110 of the transfer press machine 10A of the present embodiment is divided into a plurality of split gripping mechanisms 112 and 113 in the horizontal direction H1 as shown in FIG. By attaching and detaching each of the mechanisms 112 and 113, it is possible to attach and detach the gripping mechanism 111 as a whole. As a result, the die 92 can be replaced more easily than before.

Further, a part of the support block 95 below the transfer device 110 is divided into a plurality of base blocks 94 each accommodating a plurality of dies 92 and a plurality of knockout pins 35, and a plurality of dies that can slide back and forth. Since it is supported by the set 22, when replacing the die 92, the die set 22 can be pulled out from the press machine platform 11 to the outside in the front-rear direction, and the die 92 and the punch 91 can be replaced in a wider work space than before. It can be carried out. As a result, the die 92 and the punch 91 can be replaced more easily than before.

Moreover, since the base block 94 is divided into the transfer support split block 31 that supports the split gripping mechanism 113 and the plurality of die support split blocks 32 that support the die 92, the attachment/detachment work of the split gripping mechanism 113 is also simple. The die 92 can be easily replaced one by one. Also, each die support division block 32 or each transfer support division block 31 can be replaced with a new one. Furthermore, each die set 22 can be replaced with a new one.

Further, since the transfer press machine 10A of the present embodiment is provided with the transfer drive mechanisms 100, 102 for operating the split rails 47, 86 for each of the split gripping mechanisms 112, 113, the fingers 49 between the split gripping mechanisms 112, 113 are arranged. , 79 in the lateral direction H1 can be different. Further, in the above configuration example, the slide strokes in the horizontal direction H1 of the fingers 49 of the divided gripping mechanisms 113 of the die set 22 for drawing and ironing are the same, but they may be different. Specifically, for example, since the workpiece W is narrowed and gradually slimmed down toward the downstream side, the slide stroke of the finger 49 on the downstream side in the horizontal direction H1 is equivalent to the slide stroke of the finger 49 on the upstream side in the horizontal direction H1. The distance between fingers 49, punches 91, and dies 92 adjacent in the lateral direction H1 may be narrowed accordingly. By doing so, the entire transfer press machine 10A can be made compact.

[Other embodiments]
(1) In the transfer press machine 10A of the above embodiment, the transport driving mechanisms 100 and 102 are provided upstream of the split gripping mechanisms 112 and 113 in the transport direction. The drive mechanism may be arranged, or may be arranged in the intermediate portion of the divided gripping mechanism in the conveying direction.

(2) The transfer press machine 10A of the above-described embodiment includes a work producing mechanism (punching punch 81, drawing punch 82, punching die 83, drawing die 84) for producing a work W from a sheet metal V. A dedicated press having a work generating mechanism may be provided in the previous process, and the transfer press may acquire the work from the previous process without having the work generating mechanism. Also, the transfer press machine may obtain a blank material from a previous process and perform press working from the process of generating a cylindrical work.

(3) In the transfer press machine 10A of the above-described embodiment, all the split gripping mechanisms 112 and 113 are provided with a transport drive source. The ram lifting drive source 14 may also be used as the drive source.

(4) In addition, a driving source for transportation is not provided for each of the divided gripping mechanisms 112 and 113. For example, a plurality of divided rails 47 and 86 are detachably connected by the rail connecting portion and operated by a common driving source for transportation. may

(5) The opening/closing drive mechanism 101 was a ball screw mechanism, but for example, a pair of timing belts are extended in the front-rear direction H2 and fixed to a pair of front-rear slide engagement rails 46, A mechanism that rotates a pair of timing belts in opposite directions by a motor of , and a direct-acting rod of an air cylinder are connected to a pair of front and rear slide engagement rails 46, and the front and rear slide engagement rails 46 are moved by compressed air. It may be configured to be moved in the front-rear direction.

(6) The transport driving mechanisms 100 and 102 may also be ball screw mechanisms or timing belt mechanisms instead of the rack and pinion mechanisms.

(7) In the transfer press machine 10A of the above-described embodiment, the die 92 and the knockout pin 35 may also be accommodated in the transfer support split block 31, and the transfer support split block 31 may also serve as the die support split block 32. good.

(8) In the transfer press machine 10A of the above-described embodiment, the transfer drive shaft 44S and the pinion 44 are formed with splines so as to be slidable in the direction of the rotation axis, and the split rail 47 and the lateral slide engaging member 42 are arranged to be slidable. The entire split rail 47 may be configured to move in the horizontal direction H1 without being split into the front and rear slide engagement rails 46 .

Although specific examples of the technology included in the scope of claims are disclosed in the specification and drawings, the technology described in the scope of claims is not limited to these specific examples. Various modifications and changes of the examples are included, and a part of specific examples is also included.

REFERENCE SIGNS LIST 10A transfer press 11 press platform 13 support beam 19 push rod 20 ram 21, 22 die set 24 slide base 24B upper and lower through holes 26 split punch holder 31 transfer support split block 32 die support split block 35 knockout pin 41 slide engagement member 42 Horizontal slide engagement member 43 Rack 44 Pinion 46 Front/rear slide engagement rail 47, 86 Split rail 48 Slide coupling unit 49, 79 Finger 50 Ball screw 50A, 50B Screw part 51 Ball nut 52 Rail engagement member 53 Support rail 55 Engagement Matching rib 87 Spring member 81, 82, 91 Punch 83, 84, 92 Die 92A Forming hole 93 Dummy punch 94 Base block 95 Support block 97, 98 Drive source for transfer 99 Drive source for opening and closing 100, 102 Transfer drive mechanism 101 Opening and closing Drive Mechanism 105 Finger Support Rail 110 Transfer Device 111 Gripping Mechanisms 112, 113 Divided Gripping Mechanism 115 Punch Holder H1 Lateral H2 Front-Back W Work

Claims (14)

A plurality of cylindrical workpieces are pressed into the forming holes of a plurality of dies at once by a plurality of punches arranged in a horizontal row, and then pushed out above the plurality of dies by a plurality of knockout pins, and each of them is pressed by a transfer device. A transfer press machine that repeats the movement upward of the adjacent die,
a laterally extending support beam, a ram that rises and falls above the support beam, a plurality of push-up rods that vertically penetrate the support beam and rise and fall in synchronization with the ram to push up the plurality of knockout pins; a press platform having
a punch holder supported by the ram and holding the plurality of punches arranged in a horizontal row;
A transfer press comprising a support block supported by the support beam, having a plurality of upper and lower through holes, and accommodating the plurality of dies and the plurality of knockout pins inside the holes,
a plurality of base blocks obtained by dividing a part or the whole of the support block and each accommodating the plurality of dies and the plurality of knockout pins;
a plurality of slide bases arranged in a horizontal row on the support beam, supporting the plurality of base blocks from below, and capable of sliding independently between a first position and a second position in the front-rear direction;
a plurality of vertical through-holes vertically penetrating the slide base and in which the knockout pins move up and down;
A transfer press machine comprising: a plurality of base fixing parts for fixing the plurality of slide bases to the first positions. a plurality of divided punch holders, each of which is formed by dividing the punch holder in the horizontal direction corresponding to the plurality of base blocks, each of which supports the punch and is detachably attached to the ram;
2. The transfer press machine according to claim 1, further comprising a pillar that rises from each of said slide bases and supports each of said divided punch holders so that they can move up and down. 3. A transfer press according to claim 1 or 2, wherein each slide base is separately removable from the press platform. The transfer device has a gripping mechanism that supports a plurality of pairs of fingers openable and closable on a pair of finger support rails that extend laterally on the support block and face each other in the front-rear direction. and intermittently convey a plurality of workpieces by gripping them with the plurality of pairs of fingers,
the gripping mechanism is laterally divided into a plurality of divided gripping mechanisms corresponding to the plurality of base blocks;
Each of the split gripping mechanisms includes a pair of split rails split from the pair of finger support rails, a plurality of pairs of the fingers, and a pair of split rails attached to the support block. 4. The transfer press machine according to any one of claims 1 to 3, further comprising a pair of sliding engagement members that are slidably supported in a direction. 5. The method according to claim 4, wherein each of said split gripping mechanisms is provided with a transport drive mechanism attached to said support block and receiving power from a transport drive source to horizontally reciprocate said pair of split rails. transfer press machine. 6. The transfer press machine according to claim 5, wherein said plurality of divided gripping mechanisms include a plurality of types of divided gripping mechanisms having mutually different lateral slide strokes of said fingers. 5. The method according to claim 4, further comprising: a plurality of rail connecting portions for connecting the split rails adjacent to each other in the lateral direction; The transfer press machine described. The pair of split rails of part or all of the split gripping mechanism includes a pair of lateral slide engagement members that engage the pair of slide engagement members in a laterally slidable manner; a pair of front-rear slide engagement rails that engage with the lateral slide-engagement member so as to be slidable in the front-rear direction and support the plurality of pairs of fingers;
8. The transfer press according to any one of claims 4 to 7, further comprising an opening/closing drive mechanism for receiving power from an opening/closing drive source to move the pair of front/rear slide engagement rails toward and away from each other. machine. Some or all of the plurality of divided gripping mechanisms include:
a front-rear slide support portion that supports the pair of slide engagement members together with the pair of split rails so as to be movable in the front-rear direction;
8. The transfer press machine according to any one of claims 4 to 7, further comprising an opening/closing drive mechanism for receiving power from an opening/closing drive source to move the pair of slide engagement members toward and away from each other. . a plurality of spring members biasing each pair of said fingers toward each other;
8. A transfer press according to any one of claims 4 to 7, wherein each pair of fingers slides and opens and closes the workpiece and other members fitted to the punch. 11. The transfer press machine according to any one of claims 4 to 10, further comprising a transfer support split block formed by detachably splitting a part of said base block and supporting said split gripping mechanism. a plurality of die support division blocks formed by dividing the base block in the lateral direction, each of which is separately removable and which accommodates one of each of the dies and the knockout pins;
The transfer support division block is provided separately from the plurality of die support division blocks,
Above the transfer support split block, the workpiece is supported by the ram and moved up and down. 12. The transfer press machine according to claim 11, further comprising dummy punches that are transferred to the fingers of the transfer press. a plurality of die support division blocks formed by dividing the base block in the horizontal direction, each of which is separately removable and which accommodates one of each of the dies and the knockout pins; and the plurality of die support division blocks. 12. The transfer press machine according to claim 11, wherein a part of also serves as the transfer support division block. 5. Any one of claims 1 to 4, comprising a plurality of die support split blocks formed by splitting the base block in the lateral direction, each of which is separately removable and which accommodates one of each of the dies and the knockout pins. 1. A transfer press machine according to claim 1.

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