JP3204964U - Multistage forging machine - Google Patents

Abstract

[PROBLEMS] To change the direction of a molded product by 90 degrees from a first conveyor, separate and feed one by one into the second conveyor at right angles to the conveying direction, and cool the product and wash the adhered oil during the conveying. Provided is a multi-stage forging machine capable of performing A product transfer chuck for transferring a product discharged from a final die 4f to a position where a punch 6f does not interfere with the product, and a product dropped from the chuck is separated and received one by one perpendicular to the transfer direction, and the die The first conveyor 13 for conveying in the parallel direction, the first direction changing mechanism 14 for receiving the product discharged from the first conveyor and changing the direction by 90 degrees, and the direction-changed products one by one perpendicular to the conveying direction The second conveyor 15 that is separated and transported in the front-rear direction of the receiving die, and the product is allowed to pass into the liquid tank together with the second conveyor at the intermediate position in the longitudinal direction of the second conveyor to cool the product and drop the oil. A cleaning tank 26 is provided. [Selection] Figure 1

Description

  The present invention relates to a multi-stage forging machine that forcibly forms a blank stepwise from coarse to fine by a plurality of forging stations comprising a die and a punch.

  Conventionally, multistage forging machines that mold bolts, nuts, and other various parts are forcibly blanked in stages from rough to fine at multiple forging stations, each equipped with a die and punch facing each other. In general, this type of forging machine is equipped with a transfer chuck for gripping the blank and transferring it between the forging stations. By this chuck, the blank processed in the former forging station is grabbed and the forging station for the subsequent stage. It is made to send to.

  Then, as a means for taking out the final molded product (hereinafter referred to as product) without taking a dent when taking out the product from the final die of the final forging station, the product protruding from the final die is gripped by the chuck and laterally A number of concave receiving parts are arranged so that the product is transferred to the product opening position (in the rear direction) and the chuck is opened at that position to drop the product, while the dropped product is arranged immediately below the opening position. There are known products having a product conveying mechanism for receiving one by one at each concave receiving portion of a linear conveyor having no dent, and then conveying horizontally to the outer side of the forging machine by intermittent driving of the linear conveyor. . In that case, for example, the linear conveyor in the product conveying mechanism is stretched horizontally and in the conveying direction, and a large number of partition pieces are formed on the surface side of the linear conveyor so as to have a width slightly larger than the shape width of the product. Is constructed so that a large number of concave receiving portions are formed.

  By the way, in the product transport mechanism provided with the above-described linear conveyor, the products are received by each receiving portion one by one in the posture at the time of dropping with one linear conveyor, and the received products are forged. It can be sequentially conveyed out of the molding machine.

  However, due to the line layout and the structure of the multi-stage forging machine, for example, the product received by the linear conveyor has to be turned 90 degrees at the same time and sent to another linear conveyor. In the case where the product has a columnar shape, a cylindrical shape, or a headed shaft shape, even if an ordinary curve conveyor is used, the product easily rolls in a direction different from the conveying direction due to centrifugal force when the direction is changed. For this reason, there has been a problem that it is difficult to accurately change the direction of the product and the conveying direction at the same time by 90 degrees and accurately feed it to another linear conveyor or the like.

  Also, in the conventional multi-stage forging machine, when washing the forming oil remaining on the product after molding, such as oil removal or rust prevention, the product is temporarily stored by a linear conveyor or other conveyor. The product is stored in the storage unit from the transfer conveyor, and then the stored product is sent to a separate cleaning tank using another transfer means in a subsequent process, and then washed and dried in the cleaning tank. I was working. For this reason, there is a problem that the entire equipment becomes large, and the product is not immediately washed after molding by the forging machine, that is, the cleaning effect is worsened by setting a long waiting time. In addition, there is a problem that dust adheres or oily smoke is generated during the standby state.

  Therefore, in order to solve the above-described problems, the present invention changes the direction of the products received by separating them one by one perpendicularly to the transport direction without any dents on the first conveyor, by turning 90 degrees accurately. The second conveyor is arranged perpendicular to the transport direction so that it can be fed one by one, and the product is cooled while the product is being transported by the second conveyor. It is an object to provide a multistage forging machine that can effectively perform the above.

  The invention described in claim 1 of the present application is a multi-stage forging machine that forcibly forms a blank stepwise from coarse to fine by a plurality of forging stations comprising a die and a punch, and the final die of the last-stage forging station A product transfer chuck that transfers the product discharged from the punch to a position where the punch does not interfere, and a product that has been released from the product transfer chuck is separated and received one by one perpendicular to the transfer direction directly below the product transfer chuck. A first conveyor that conveys in the juxtaposed direction, a first direction changing mechanism that receives a product discharged from the first conveyor and changes the direction by 90 degrees, and a product that is turned 90 degrees by the first direction changing mechanism in the conveying direction A second conveyor that is orthogonally separated and conveyed one by one in the front-rear direction of the receiving die, and a second conveyor at the middle position in the longitudinal direction of the second conveyor. Together, characterized in that allowing the passage of the product in the liquid tank and a cleaning tank simultaneously with cooling of the product is performed with oil drop and rust product.

  The invention described in claim 2 of the present application is such that the die and punch in the remaining forging stations other than the last forging station in the multistage forging machine according to claim 1 are attached so as to be exchangeable with an arbitrary die. While it is configured so that the number of forging steps can be increased by replacement, the punch for pushing the intermediate molded product formed in the former forging station into the back side of the die on the punch side in the final forging station and the final forming The punch for use is replaceable, and the die for the final forging station is allowed to push the intermediate molded product into the back of the die by the indentation punch. The discharge passage mechanism that discharges to the punch and the knockout pin mechanism that kicks out the product from the final molding die to the punch side can be replaced. A third conveyor for separating and receiving the intermediate molded product dropped from the discharge passage mechanism one by one perpendicularly to the conveying direction and conveying the product in the direction in which the dies are juxtaposed, Second, after receiving the intermediate molded product discharged from the third conveyor and turning 90 degrees, the intermediate molded product is separated and sent to the upper side of the washing tank in the second conveyor one by one perpendicular to the conveying direction. A direction changing mechanism is provided.

  As described above, according to the multi-stage forging machine of the present invention, the product discharged from the final die of the final-stage forging station is gripped by the transfer chuck, transferred to a position where it does not interfere with the punch, and released and dropped. The first conveyor disposed immediately below the first conveyor is separated and received one by one perpendicular to the conveying direction and conveyed in the direction in which the dies are arranged side by side. It is received and held. When the received and held product is turned 90 degrees so that the orientation of the product is orthogonal to the conveying direction of the second linear conveyor at the position directly above the second conveyor by the rotation operation of the first direction changing mechanism, The products are fed onto the second conveyor, and the products are transported in an orderly manner by separating the products one by one perpendicular to the transport direction by the second conveyor. Moreover, a cleaning tank is provided at the middle position in the lengthwise direction of the second conveyor to allow the product to pass into the liquid tank together with the second conveyor to cool the product and to remove oil from the product and prevent rust. Therefore, when the product is passed through the cleaning tank by the second conveyor, it can be passed in an orderly manner in a state of being separated one by one in a direction orthogonal to the conveying direction. As a result, it is possible to quickly and surely remove oil attached to the product and prevent rust at the same time as cooling the product during conveyance, and the cleaning effect can be remarkably improved.

  In addition, the punch side of the final stage forging station is provided with a pressing punch that pushes the intermediate molded product molded in the former stage forging station into the back side of the die, and the intermediate part by the pressing punch is provided on the die side of the final stage forging station. An intermediate formed by forging from the front-side forging station to the rear-side forging station by providing a discharge passage mechanism that allows the molded product to be pushed into the back of the die and discharges the pressed intermediate formed product from the back of the die to the outside. The molded product can be taken out from the knockout pin side in the final forging station. In that case, after receiving and holding the third molded product and the intermediate molded product discharged from the terminal end of the third conveyor and turning 90 degrees, the intermediate molded product is moved in the transport direction on the upper side of the washing tank in the second conveyor. On the other hand, a second direction changing mechanism is provided that is orthogonally separated and sent one by one to the second conveyor. It is possible to perform cleaning such as oil removal and rust prevention adhering to the molded product.

  Furthermore, the die and punch of the former side forging station to the latter side forging station are replaced with the first die and punch from the blank to the intermediate molded product, and step by step from the taken intermediate molded product to the desired product. By exchanging the die for the second finish with a punch, and replacing the discharge passage mechanism on the die side of the final forging station with a knockout pin mechanism that kicks out to the punch side of the product, the total number of forging steps Can be increased almost twice. Therefore, the intermediate molded product that has been taken out is subjected to a heat treatment for removing work hardening, and then the intermediate molded product in which the work hardening has been eliminated at the fore-side forging station for finishing again continues to the product. Forging can be performed. As a result, even if the desired product has a complicated shape and high finishing accuracy, it can be forged with high accuracy.

It is a schematic plan view of the multistage forging machine according to the present invention. It is a die block side schematic front view of the same forging machine. It is a vertical side view of the discharge passage mechanism in the forging machine. It is a vertical side view of the knockout pin mechanism in the forging machine. FIG. 3 is a partially omitted plan view of the molded product transport mechanism. FIG. 3 is a partially omitted front view of the molded product transport mechanism.

  Embodiments of the present invention will be described below with reference to the drawings.

As shown in FIG. 1, the basic structure of the multistage forging machine 1 of the present invention is as follows.
A die block 3 is provided at a predetermined position of the machine base 2, and four dies 4 a to 4 f are arranged in parallel at a predetermined interval on the die block 3. On the other hand, the same number of punches 6a to 6f as the above dies are arranged on the front surface of the ram 5 that moves forward and backward to face the dies 4a to 4f. The cutting blank B is forged between 6f. In that case, since each pair of die 4a-4e and punch 6a-6f which opposes each comprises a forging station, in this forging machine 1, six forging stations will be provided, and it mentions later. The cutting blank B to be formed is molded from coarse to fine while being sequentially transferred through these forging stations to obtain, for example, a cylindrical molded product.

  On one side of the die block 3 in the machine base 2, a wire rod supply mechanism 7 that supplies the coiled wire rod A to the forging station side while straightening the coil wire rod A and a wire rod A supplied from the wire rod supply mechanism 7 are provided. And a cutter 8 that cuts to a predetermined size to form a cut blank B.

  A support frame 9 is slidably mounted on the die block 3 so as to be fitted to a guide member (not shown) provided on the die block 3. A drive rod 10 that reciprocates with a predetermined stroke in a die juxtaposition direction orthogonal to the direction is connected. As the drive rod 10 moves, the support frame 9 reciprocates once while the ram or punch is retracted by a distance equal to the distance between adjacent dies.

  Furthermore, seven transfer chucks 11 a to 11 g for transferring blanks are attached to the front surface of the support frame 9, and each chuck 11 a to 11 g grips the blank B as the support frame 9 is reciprocated by the drive rod 10. In order to move sequentially between dies.

  The chuck 11g on the rightmost side is a product transfer chuck, which grips the product S molded at the final forging station and protruded from the final die 4f, and moves outward of the final forging station as indicated by a chain line in FIG. After the product is transferred and the product S is opened and dropped at this transfer position, the product returns to the final forging station. Further, a product transport mechanism 12 described later is disposed below the product release position of the product transfer chuck 11g.

  And in this invention, in the multistage forging machine 1 basically constructed as described above, the dies 4a to 4e and the punches 6a to 6e in the remaining forging stations except the forging station at the final stage are respectively optional finishing dies. Can be replaced with a punch (not shown), that is, a first die and punch group from the cutting blank B to the intermediate molded product and a second finishing die and punch group from the intermediate molded product to the product. It is attached so that the number of forging steps can be increased almost twice by the exchange.

  Further, in the final-stage forging station, on the punch side, as shown in FIGS. 5 and 6, a press punch 6f for pushing an intermediate molded product formed in the previous-stage forging station into the back side of the die, and for final molding The punch 6f 'is provided so as to be replaceable. Similarly, on the die side of the forging station at the final stage, the intermediate molded product C is allowed to be pushed into the back side of the die by the pressing punch 6f shown in FIG. ) And a knockout pin mechanism 30 having a knockout pin 31 for kicking out the product S from the final molding die 4f shown in FIG. 4 to the punch side. And are provided to be exchangeable. Below the discharge position of the discharge passage mechanism 20, an intermediate molded product conveyance mechanism 22 described later is disposed.

  Each die or punch may be replaced individually, but it is preferable because the die block 3 and punch block can be replaced quickly and easily.

  On the other hand, as shown in FIGS. 2, 5 and 6, the product transport mechanism 12 described above separates the products S opened and dropped by the product transfer chuck 7g one by one perpendicularly to the transport direction. A first conveyor 13 that receives and conveys the product S in the direction in which the dies are juxtaposed, a first direction changing mechanism 14 that receives and holds the product S discharged from the end portion of the first conveyor 13 and rotates 90 degrees; A second conveyor 15 that receives and separates the products S that have been turned 90 degrees by the first direction changing mechanism 14 one by one perpendicular to the conveying direction and that conveys the products S in a direction orthogonal to the conveying direction of the first conveyor 13. When the product S on the first direction changing mechanism 14 is at a position just above the second conveyor 15 and the direction is changed to be orthogonal to the conveying direction of the second conveyor 15, the product S is pushed out and the second The conveyor 15 on and a dented prevent blade wheel 16 to drop one by one. Then, at the middle position in the lengthwise direction of the second conveyor, the washing tank 26 which allows the product S to pass into the liquid tank together with the second conveyor and cools the product S and simultaneously removes the oil from the product S and prevents rusting, and air blow. 27, and the product S is cooled while the product S is being transported, and at the same time the oil S, such as wire drawing oil or pressure forming oil, which has adhered to the product S is removed and washed away, and dried. ing.

  The intermediate molded product conveyance mechanism 22 is for conveying the intermediate molded product C discharged from the discharge passage mechanism 20 to the outside, and receives the intermediate molded product C discharged from the discharge passage mechanism 20 directly below the die. The third conveyor 23 transported in the juxtaposed direction and the intermediate molded product C discharged from the terminal portion of the third conveyor 23 are received and held and turned 90 degrees before the intermediate molded product C is transferred to the second conveyor 15. A second direction changing mechanism 24 is disposed on the upper side of the cleaning tank 26 and is separated and sent one by one perpendicular to the conveying direction of the second conveyor 15. In the embodiment shown in the figure, similar to the product transport mechanism 12 described above, the intermediate molded product C on the second direction changing mechanism 24 is located immediately above the second conveyor 15 and the direction thereof is the transport direction of the second conveyor 15. A dent prevention impeller 25 is provided that extrudes the intermediate molded product C when the direction is changed so as to be orthogonal, and separates and drops the intermediate molded product C one by one on the second conveyor 15 one by one.

  Although not described in detail as the first, second and third conveyors 13 and 15, it is possible to use a corrugated net conveyor by the weight of the product S that can be separated and conveyed one by one on the conveyor. This is true. In addition, for example, it may be a conveyor in which a large number of concave receiving portions are formed by standing a large number of partition pieces so as to be orthogonal to the conveying direction. Further, as the first and second direction changing mechanisms 14 and 24, belt-type ones as shown in the figure are used, and for example, a product S or an intermediate molded product C discharged from the end portions of the first conveyors 13 and 15 is used. It may be a rotary direction changing mechanism (not shown) or the like in which a large number of recess receiving portions that receive and hold are arranged radially at an equal angle to the rotation axis. Further, the first, second and third conveyors 13, 15, 23 and the first and second direction change mechanisms 14, 24 of the 90 degree turn type and the dent prevention impellers 16, 25 are respectively servo motors, etc. It is intermittently driven in synchronism with the operation of the machine by appropriate driving means.

  In FIG. 1, reference numeral 28 denotes a cooling tank for cooling and storing the replaced die block and punch block, and reference numeral 29 denotes intermediate forming after heat treatment or the like is performed in place of the forged wire A. An intermediate molded product supply device such as a feeder for supplying the product C to the forging part side of the machine base 2 again. Further, reference numeral 40 denotes a coil wire rod winder, reference numeral 41 denotes a straightening straightener, and reference numeral 42 denotes a transport conveyor dedicated to transport when the cleaning tank 26 and the air blow 27 are not used.

  Next, the operation of the multistage forging machine 1 configured as described above will be described.

  First, the cutting blank B is forcibly formed in a stepwise manner between the dies 4a to 4e and the punches 6a to 6e in the first to fifth forging stations as the ram 5 moves forward and backward. In other words, the cutting blank B is molded from coarse to fine while being sequentially transferred through these forging stations, so that, for example, a cylindrical intermediate molded product C is obtained.

  Then, the intermediate molded product C that has been forged at the first to fifth forging stations for the first time is discharged outward from the discharge passage mechanism 20 at the sixth forging station side. The discharged intermediate molded product C is received by the third conveyor 23 located immediately below it in a state orthogonal to the conveying direction and separated one by one and conveyed in the direction in which the dies are arranged side by side. Are ejected in a state of being separated one by one perpendicular to the conveying direction onto the second linear conveyor 15 via a second direction changing mechanism 24 for turning 90 ° and a dent-proof impeller 25. The The intermediate molded product C discharged onto the second linear conveyor 15 is orthogonal to the conveying direction and separated one by one, and the cleaning tank 26 provided on the terminal end side of the second linear conveyor 15 and the air blow 27, the intermediate molded product C is cooled in the washing tank 26 and the wire drawing oil or pressure forming oil adhering to the surface thereof is effectively washed and removed, and then dried by air blow to appropriately store the container. Be contained. Thereafter, the intermediate molded product C accommodated in the accommodating bowl is placed in a heat treatment chamber, and subjected to heat treatment for removing work hardening due to forging. After the heat treatment, the intermediate molded product C is conveyed to the intermediate molded product supply device 29.

    On the other hand, when a predetermined number of intermediate molded products C are formed and discharged from the intermediate molded product discharge mechanism 21, the forging is temporarily interrupted. Then, the first die and the punch group in the first to fifth forging stations for the first time are replaced with the second die and punch group for finishing, respectively. At the same time, at the final (sixth stage) forging station, as shown in FIG. 6, the discharge passage mechanism 20 for the intermediate molded product C knocks out the product S from the final molding die 4f ′ to the punch side. The mechanism 30 is replaced.

  After that, after the heat treatment is performed again, the intermediate molded product C is supplied from the intermediate molded product supply device 29 to the forging station side to reach the product S that is obtained stepwise by the finishing die and punch at each forging station. The finishing forging is performed step by step. As a result, the total number of forging steps can be almost doubled. As a result, the former side forging station for finishing again in a state where the drawn intermediate oil C, the drawn wire oil, the forging oil, and the like are removed and dried, and the heat treatment for removing the work hardening is performed to remove the work hardening. Thus, the precise forging to the product S can be continued at the rear side forging station. Therefore, even if the desired product S has a complicated shape and high finishing accuracy, it can be forged with high accuracy.

  In addition, the product S discharged from the final die 4f of the final-stage forging station is gripped by the transfer chuck, transferred to a position where it does not interfere with the punch 6f ', dropped and dropped, and a first conveyor disposed immediately below it. 13 is received by being separated one by one perpendicular to the conveying direction and conveyed in the direction in which the dies are juxtaposed, and received and held by the first direction changing mechanism 14 at the end of the first conveyor 13. Then, the received product S is rotated 90 degrees by the first direction changing mechanism 14 so that the product S is positioned right above the second conveyor 15 and the direction of the product S is orthogonal to the conveying direction of the second linear conveyor 15. When the direction is changed, the products S are fed onto the second conveyor 15 via the impeller 16 and the second conveyor 15 separates the products S one by one in an orthogonal manner to the conveying direction. Be transported. In addition, the second conveyor 15 and the product S are allowed to pass into the liquid tank at the middle position (terminal side) of the second conveyor in the longitudinal direction so that the product S is cooled and oil is removed and rust is prevented at the same time. Since the cleaning tank 26 and the air blow 27 to be performed are provided, when the product S is passed through the cleaning tank and the air blow 27 by the second conveyor 15, the product S is neatly separated in a state of being orthogonal to the transport direction one by one. Can be passed. As a result, oil dropping and rust prevention attached to the product S at the same time as cooling of the product during conveyance can be performed quickly and reliably, and the cleaning effect can be remarkably improved.

  In the embodiment shown in the figure, the linear third conveyor 23 of the intermediate product conveyance mechanism 22 is configured to communicate with the second conveyor 15 on the way to the linear second conveyor 15 of the product conveyance mechanism 12, and Since the cleaning tank 26 and the air blow 27 are provided on the terminal end side of the second conveyor 15, the use of the single cleaning tank 26 and the air blow 27 prevents the structure from becoming large. However, during the conveyance of either the intermediate molded product C or the product S, it is possible to wash and remove the drawing oil or pressure forming oil and dry it at the same time as cooling.

  In the description of the above-described embodiment, after the intermediate molded product C is taken out from the sixth forging station of the intermediate molded product C, the intermediate molded product C is subjected to washing removal and drying such as wire drawing oil and molded oil, and further, Although a description has been given of a product that has been subjected to finish forging again after performing heat treatment to remove work hardening, it is not necessarily limited to a structure in which the intermediate molded product C is taken out or subjected to heat treatment. It is not a thing.

DESCRIPTION OF SYMBOLS 1 Multistage forging machine 4a-4f Die 6a-6f Punch 13 1st conveyor 14 1st direction change mechanism 15 2nd conveyor 13 3rd conveyor 20 Discharge passage mechanism 24 2nd direction change mechanism 26 Washing tank 30 Knockout pin mechanism B Blank C Intermediate molded product S Product (final molded product)

Claims (2)

  This is a multi-stage forging machine that forms a blank in a stepwise manner from rough to fine by multiple forging stations consisting of dies and punches, and the punch does not interfere with the product discharged from the final die of the last-stage forging station. A product transfer chuck for transferring the product to a position, a first conveyor for separating and receiving the products dropped and dropped from the product transfer chuck one by one perpendicular to the transfer direction and transferring the products in the direction in which the dies are juxtaposed The first direction changing mechanism that receives the product discharged from the first conveyor and changes the direction by 90 degrees, and the products that are changed by 90 degrees by the first direction changing mechanism are separated and received one by one perpendicular to the conveying direction. Passing the product into the liquid tank together with the second conveyor at the position in the middle of the second conveyor in the longitudinal direction of the second conveyor and the longitudinal direction of the die Multistage forging molding machine characterized by comprising a cleaning tank simultaneously with cooling of the product is performed with oil drop and rust product was.   In the multi-stage forging machine, the die and punch in the remaining forging stations other than the last forging station are attached so as to be exchangeable with any die, and the number of forging steps can be increased by the exchange. On the other hand, on the punch side in the final forging station, a pressing punch for pushing the intermediate molded product formed in the preceding forging station into the back side of the die and a final forming punch are provided so as to be replaceable. On the die side of the station, a discharge passage mechanism that allows the intermediate molded product to be pushed into the back side of the die by an indentation punch, and discharges the pressed intermediate molded product to the outside from the back side of the die, and the product from the final molding die A knockout pin mechanism that kicks out to the punch side of the punch is provided in a replaceable manner, and further from the discharge passage mechanism A third conveyor that receives the intermediate molded product that has been dropped one by one perpendicularly to the conveying direction and conveys the product in the direction in which the dies are juxtaposed; and an intermediate molded product that is discharged from the third conveyor A second direction changing mechanism is provided in which the intermediate molded product is separated and sent to the upper side of the washing tank in the second conveyor one by one perpendicular to the conveying direction after receiving and turning 90 degrees. The multistage forging machine according to claim 1.

Images