JP2015085361A - Hot press molding device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a hot press molding device which can perform hot press molding to a plurality of works in parallel, and can perform secondary processing at press molding.SOLUTION: A hot press molding device 10 comprises a press metal mold 15 constituted of three or more press molds 11 to 14, and performs the mold closing or mold closing motion to one set of the press molds 13, 14 (11, 12) which do not adjoin each other, and are not locked to each other in a state that the adjacent press molds 11, 12 (13, 14) are locked to each other. The hot press molding device 10 further comprises secondary processing parts 17 which are arranged at the press molds 11, 13, and apply secondary processing to a work in a state of being mold-closed by the press molds 11, 12 (13, 14) which are locked to each other, and a secondary processing drive part 18 which drives the secondary processing part 17. The secondary processing drive part 18 is driven accompanied by the mold-opening motion of one set of the press molds 13, 14 (11, 12) which are not locked to each other.

Description

  The present invention relates to an apparatus for forming a workpiece such as a steel material by hot pressing.

  For example, one of the processing methods for automobile parts is hot press molding such as die quenching. In this molding method, after heating a workpiece such as a steel material, the workpiece is put into a press die and clamped to mold the workpiece into a predetermined shape, and the mold clamped state is maintained for a predetermined time, so that the workpiece is fixed. Heat treatment such as quenching (mainly heat treatment with cooling) is performed.

  In this hot press forming process, the bottom of the press die is clamped (clamped state) for a predetermined time (for example, several tens of seconds) in order to hold and cool the workpiece in the press die for quenching or the like. Need to hold in. During this time, since the next molding cannot be performed, the present inventors are provided with a press die composed of a plurality of press dies in order to improve productivity, and among these press dies, predetermined presses adjacent to each other. Proposing a so-called compound press molding device that enables mold clamping or mold opening by a pair of press dies that are adjacent to each other and not locked together by locking the dies together (patented) Reference 1).

  Similarly, from the viewpoint of improving productivity, there has also been proposed a press die that incorporates a secondary processing part for performing secondary processing such as drilling on a workpiece in a clamped state (patent) Reference 2).

Japanese Patent Application No. 2012-241037 JP 2005-248253 A

  By the way, recently, demands for weight reduction of automobile bodies are increasing, and high tension (high tension or super high tension) of steel sheets constituting the body is actively performed. However, when performing secondary processing such as drilling while performing the above hot press forming on this type of steel plate, there is a concern of so-called delayed fracture. Delayed fracture is a phenomenon that is particularly prominent in high-strength steel materials, and is a phenomenon that suddenly leads to fracture with virtually no plastic deformation or crack extension after a certain period of time after receiving a load. It is said to mean. Therefore, when performing hot press forming on this type of high-strength steel, it is necessary to perform secondary processing such as drilling by laser processing to avoid delayed fracture, resulting in processing costs (equipment) Cost).

  Here, in the hot press forming process described in Patent Document 2, the set of press dies is further lowered from the state in which the workpiece is clamped (press formed) with a set of press dies, and the lower side The work blade protruding upward from the bolster table that supports the press die is pressed against the work so that the work is perforated and trimmed. However, this configuration is effective only when a press die is configured with only a single set of press dies, and is configured with a plurality of press dies that can be locked to each other and is not in a locked state. It is difficult to apply to a hot press forming apparatus of a type that can perform press forming and heat treatment of a plurality of workpieces in parallel with a press mold that enables mold clamping or mold opening with a set of press dies.

  For example, it is conceivable to perform secondary processing before clamping (such as before loading into the press die), but in the case of press molding that involves heat treatment, the size and shape of the secondary processing site after heat treatment It is very difficult to predict the position and the like, and is not suitable for this kind of press molding.

  In view of the above circumstances, a problem to be solved by the present invention is a hot press capable of performing hot press forming on a plurality of workpieces in parallel and performing secondary processing during the press forming. The object is to provide a molding apparatus at low cost.

  The solution to the above problem is achieved by the hot press molding apparatus according to the present invention. That is, this press molding apparatus includes a press die composed of three or more press dies, and is adjacent to each other in a state where predetermined press dies adjacent to each other among the three or more press dies are mutually locked. A hot press molding apparatus that enables clamping or clamping of a set of press dies that are not locked to each other, and is clamped by the press dies provided in the press dies and locked to each other. A secondary processing unit for performing predetermined secondary processing on the workpiece in a state of being formed, and a secondary processing drive unit for driving the secondary processing unit, and the secondary processing drive unit is locked to each other It is characterized by the fact that it is configured to be driven in accordance with the mold opening operation of a set of press dies that are not in the above state.

  As described above, the present invention pays attention to the mold opening operation of a press die that has not conventionally had a particularly beneficial effect other than taking out the workpiece, and the energy at the time of the mold opening operation is driven for secondary processing. It is used for power. According to this, when a mold opening operation is performed between a pair of press dies that are not in a mutually locked state, the other pair of mutually locked press dies are press-molded by clamping. The workpiece is held. Therefore, the secondary work can be applied to the workpiece held between the press dies by driving the secondary work drive unit in accordance with the mold opening operation of the press mold. As a result, it is possible to perform secondary processing on a workpiece that has been press-molded and immediately after the start of cooling, in other words, a relatively high temperature workpiece. Therefore, even if secondary processing such as drilling is performed by machining, the concern of so-called delayed fracture can be eliminated and stable secondary processing quality can be obtained. Further, since this secondary processing can be performed by a secondary processing drive unit that is driven in accordance with the mold opening operation of a set of press dies, it is not necessary to prepare a power source for secondary processing separately. In addition, since the force required to drive the secondary processing part is small compared with the force required to drive the press die, even if the energy during the mold opening operation is used, it will affect the drive part of the press die. The impact is small (the problem of increased output does not occur). As mentioned above, according to the said shaping | molding apparatus, the installation (especially drive part for secondary processing) required for secondary processing can be simplified, and hot press molding and secondary processing can be performed at low cost.

  Further, in the hot press molding apparatus according to the present invention, the secondary processing drive unit is disposed so as to be able to expand and contract in accordance with the clamping or opening operation of a set of press dies that are not locked to each other. You may have a 1st drive cylinder and a 2nd drive cylinder to which a secondary process part is attached and which can be expanded-contracted using expansion or compression of the working fluid by the expansion-contraction operation | movement of a 1st drive cylinder. .

  In this way, by configuring the secondary processing drive unit with the two drive cylinders having the above-described configuration, the energy during the mold opening operation of the press mold can be smoothly used as the driving force of the secondary processing unit. Can do. Also, a very simple structure is sufficient. Therefore, it is possible to further simplify the equipment and reduce the cost. Also, with this configuration, the secondary machining part is driven not only with the mold opening operation of the press die but also with the mold clamping operation, and here it works on the workpiece that has been clamped during the mold opening operation. In addition, the operation of the secondary machining portion can be restored (or moved backward if projecting toward the workpiece). Therefore, it is possible to reliably and easily perform the drive control of the secondary processing portion while having a simple structure.

  As described above, according to the present invention, it is possible to reduce a hot press forming apparatus that can perform hot press forming on a plurality of workpieces in parallel and that can perform secondary processing during the press forming. Can be provided at cost.

It is a front view which shows the whole structure of the hot press molding apparatus which concerns on one Embodiment of this invention. It is a principal part expanded sectional view of the lock mechanism periphery provided in the hot press molding apparatus shown in FIG. It is principal part sectional drawing for demonstrating operation | movement of the hot press molding apparatus shown in FIG. It is principal part sectional drawing for demonstrating operation | movement of the hot press molding apparatus shown in FIG. It is principal part sectional drawing for demonstrating operation | movement of the hot press molding apparatus shown in FIG. It is principal part sectional drawing for demonstrating operation | movement of the hot press molding apparatus shown in FIG. It is principal part sectional drawing for demonstrating operation | movement of the hot press molding apparatus shown in FIG.

  Hereinafter, the configuration and operation of a hot press forming apparatus according to an embodiment of the present invention will be described with reference to the drawings. In the following, the steel plate is a workpiece that is subject to hot press forming, but it may be a steel material other than a steel plate, or may be other types of metal materials as long as hot press forming is possible. Of course it is good. Further, “first”, “second”, etc. of the first press die, the second press die,... Are given for convenience in order to distinguish them, and there is no particular superiority or difference in order. The same applies to other embodiments described later.

  FIG. 1 is a front view showing an overall configuration of a hot press forming apparatus 10 according to an embodiment of the present invention. As shown in FIG. 1, the press molding apparatus 10 includes a press die 15 including a plurality of (three or more) press dies 11 to 14, a press drive unit 16 that drives the press die 15, A secondary processing section 17 for performing predetermined secondary processing on the workpiece W1 (see FIG. 3 and the like) provided in the press dies 11-14 and clamped by the press dies 11-14; And a secondary machining drive unit 18 for driving the machining unit 17. Details of each component will be described below.

  The press die 15 is composed of three or more press dies. In the present embodiment, the first press die 11, the second press die 12, and the third press die 13 that are arranged side by side in the vertical direction. And the fourth press die 14. Of these, the first to third press molds 11 to 13 are movable molds, and are slidable in the vertical direction along guide posts (not shown), and are positioned below the first to third press molds 11 to 13. The fourth press die 14 is always fixed at a fixed position as a fixed die. The first press die 11 is attached to the lower surface of the movable plate 19, and the fourth press die 14 is attached to the upper surface of the base plate 20. In the present embodiment, the intermediate plate 21 is disposed between the second press die 12 and the third press die 13, and the second press die 12 and the third press die 13 are provided on both the front and back surfaces of the intermediate plate 21. Each is installed.

  Further, the pressing drive unit 16 is configured by, for example, a hydraulic cylinder and is fixed to the upper portion of the frame 22 of the hot press forming apparatus 10. The first press die 11 is connected to a press drive unit 16 (hydraulic cylinder) via a movable plate 19, so that the first press die 11, or the first press die 11 and the second press die 12, or the first press die always. The first to third press dies 11 to 13 can be slid in the vertical direction.

  A convex molding surface 14a is formed on the upper surface side (the side opposite to the base plate 20) of the fourth press die 14 serving as a fixed die. Moreover, the convex shaping | molding surface 12a is formed in the upper surface side (side opposite the intermediate | middle plate 21) of the 2nd press die 12 among the 1st-3rd press die 11-13 used as a movable type | mold. Concave molding surfaces 11b and 13b are formed on the lower surface side of the first press die 11 (the side opposite to the movable plate 19) and the lower surface side of the third press die 13 (the side opposite to the intermediate plate 21), respectively. ing. Moreover, a cooling water channel (not shown) is formed inside each of the press dies 11 to 14.

  The press die 15 is provided with a lock mechanism 23 for locking the press dies 11 to 14 adjacent to each other. The operation of each lock mechanism 23 is performed by, for example, a lock control unit (not shown). In the present embodiment, lock mechanisms 23 are provided on both the left and right sides of the width direction of the press die 15 (direction passing through the paper surface of FIG. 1). That is, the lock mechanisms 23 are provided at all four corners per set of press dies 11 and 12 (13 and 14) (in FIG. 1, the lock mechanisms 23 at two locations on the back side are shown). .

  Here, as shown in FIG. 2, each lock mechanism 23 includes a rotary shaft 24 provided on one of the adjacent press dies (for example, the first press die 11), a pin 25 extending from the rotary shaft 24, and a pin And a recess 27 that is formed in the other press die (for example, the second press die 12) and can be fitted to the lock 26. The rotating shaft 24 can be rotated by a rotation driving unit (not shown). The pin 25 can be expanded and contracted by an expansion / contraction drive unit (not shown). Then, when the press dies adjacent to each other are locked using the lock mechanism 23, first, a set of target press dies 11, 12 are placed in a clamped state. Then, from the unlocked state shown by the broken line in FIG. 2, the rotation shaft 24 is rotated counterclockwise in FIG. Is fitted in the recess 27 provided in the. Further, the pin 25 is contracted by the expansion / contraction driving part (in the direction of arrow B), the engaging part 26 is moved to the upper side in FIG. 2 and engaged with the recess 27 to lock the press dies 11 and 12 adjacent to each other. It is possible.

  The lock mechanism 23 configured as described above is a set of press dies that perform mold clamping or mold opening operations in cooperation (in the present embodiment, the first press die 11, the second press die 12, and the third press die 13). It is provided for each fourth press die 14). When any one of the lock mechanisms 23 (for example, the lock mechanism 23 between the first press die 11 and the second press die 12) is in an unlocked state, the remaining lock mechanisms 23 (for example, the third press die 13 and the like) Each lock mechanism 23 is controlled by the lock control unit so that the lock mechanism 23) with the fourth press die 14 is locked. Thereby, only one set of press dies 11, 12 (13, 14) can perform mold clamping or mold opening operation by driving of the pressing drive unit 16.

  The secondary processing drive unit 18 is configured to be driven in accordance with a mold opening operation of a set of press dies out of a locked state among the three or more press dies 11 to 14. In the present embodiment, the secondary processing drive unit 18 is disposed so as to be able to expand and contract with the clamping or opening operation of the pair of press dies 11, 12 (13, 14) that are not locked to each other. And a second drive cylinder 29 to which the secondary processing portion 17 is attached and which can be expanded and contracted using expansion or compression of the working fluid by the expansion and contraction operation of the first drive cylinder 28.

  Here, the first drive cylinder 28 includes a cylinder part 28a and a piston part 28b that is accommodated in the cylinder part 28a and that can slide in the longitudinal direction by expansion or compression of the working fluid held inside the cylinder part 28a. The In the illustrated example, the first drive cylinder 28 is disposed between the base plate 20 and the movable plate 19, and the lower end of the cylinder portion 28a is fixed to the base plate 20 and the upper end of the piston portion 28b is fixed to the movable plate 19, respectively. As a result, the movable plate 19 slides up and down in synchronization with the first to third press dies 11 to 13 as the movable die, and the piston portion 28b slides relative to the cylinder portion 28a following the movable plate 19. As a result, the first drive cylinder 28 can be expanded and contracted with the mold clamping or mold opening operation.

  In the present embodiment, the second drive cylinder 29 is connected to one of the press dies (11, 13) out of the two sets of press dies 11, 12 (13, 14) that perform mold clamping or mold opening operations in cooperation. Provided. Each of the second drive cylinders 29 and the first drive cylinders 28 can flow the internal working fluid (air in this embodiment) through the cable 30. Specifically, the working fluid inside the cylinder portion 28 a is compressed as the first driving cylinder 28 extends, and the compressed working fluid is compressed by the cylinder portion of each second driving cylinder 29 via the cable 30. 29a is supplied inside. Thereby, the piston part 29b of the 2nd drive cylinder 29 is extended. Further, the working fluid inside the cylinder portion 28 a expands as the first driving cylinder 28 contracts, so that the working fluid inside the cylinder portion 29 a of the second driving cylinder 29 passes through the cable 30. The cylinder portion 28a is supplied. Thereby, the piston part 29b of the 2nd drive cylinder 29 shrink | contracts.

  Moreover, the secondary processing part 17 is attached to the piston part 29b of the 2nd drive cylinder 29, and the drilling pin for drilling is attached in this embodiment. In addition, the corresponding other press dies (12, 14) are each formed with a fitting hole 31 that can be fitted with a piercing pin as the secondary processing portion 17, and below the fitting hole 31, there is a hole. An accommodating portion 32 is formed for accommodating the processing waste generated by the drilling with the opening pin. The processing waste accommodated in the accommodating part 32 is discharged | emitted outside by the discharge mechanism which is not shown in figure.

  Next, an aspect of hot press forming using the hot press forming apparatus 10 will be described mainly based on FIGS.

  First, as shown in FIG. 3, after the first press die 11 and the second press die 12 adjacent to each other are locked in a clamped state, the press drive unit 16 is driven to drive the first to first 3 Press dies 11 to 13 are raised together with the movable plate 19. As a result, the lower set of press dies (the third press die 13 and the fourth press die 14) that are not locked to each other starts the mold opening operation. Thus, when a predetermined gap is generated between the third press die 13 and the fourth press die 14, the first workpiece W1 heated to a predetermined temperature by a heating device (not shown) is introduced. In this state (die opening state), the secondary processing portion 17 (drilling pin) is in a state of projecting downward by driving the second drive cylinder 29.

  Next, the press drive unit 16 is driven to lower the first to third press dies 11 to 13 together with the movable plate 19. As a result, the third press die 13 and the fourth press die 14 start the clamping operation, and the first workpiece W1 introduced between them is provided with the convex molding surface 14a provided on each press die 13, 14 and the concave shape. It is press-molded into a shape following the molding surface 13b (see FIG. 4). In this state (clamping state), the first drive cylinder 28 contracts in accordance with the clamping operation of the third press die 13 and the fourth press die 14, so that the second drive is performed by the behavior of the working fluid described above. The cylinder 29 contracts, and the secondary processing portion 17 attached to the piston portion 29b moves backward. Therefore, it is possible to avoid a situation in which the secondary processing portion 17 collides with the first workpiece W1 during press molding.

  When the first workpiece W1 is press-molded in this way, the lock mechanism 23 drives the lock mechanism 23 between the third press die 13 and the fourth press die 14 and the operation of the rotary shaft 24 and the pin 25 described above causes the first work W1 to be pressed. The 3 press mold 13 and the 4th press mold 14 are locked in a state where they are clamped together. Further, the locking mechanism 23 between the first press die 11 and the second press die 12 is operated in the opposite direction by the lock control portion (the rotation shaft in the direction to release the engagement between the locking portion 26 and the recess 27). 24 and the operation of the pin 25), the locked state of the first press die 11 and the second press die 12 is released (both refer to FIG. 4).

  And cooling of the 1st work W1 is started by hold | maintaining the 1st work W1 press-molded by the 3rd press die 13 and the 4th press die 14 in the clamping state. Meanwhile, in order to press-mold the next workpiece (second workpiece W2) with the first press die 11 and the second press die 12, the die of the first press die 11 and the second press die 12 released from the locked state. Open. Specifically, by driving the pressing drive unit 16, the first press die 11 and the movable plate 19 are raised, and the first press die 11 and the second press die 12 that are not locked to each other. The opening operation starts. Thus, when a predetermined gap is generated between the first press die 11 and the second press die 12, the second work W2 heated to a predetermined temperature by a heating device (not shown) is introduced. At this time, the pin 25 and the locking portion 26 of the lock mechanism 23 are rotated to a position parallel to the horizontal direction, as shown in FIGS. 4 and 5, so that the second workpiece W2 is introduced. There is no hindrance.

  Further, by the mold opening operation, the first drive cylinder 28 extends as the movable plate 19 rises, so that the second drive cylinder 29 extends due to the behavior of the working fluid described above. As a result, the punching pin as the secondary processing portion 17 is pressed against the first workpiece W1 clamped by the third press die 13 and the fourth press die 14 to perform the drilling process (FIG. 5). The processing waste generated in the drilling process falls into the accommodating portion 32 formed below the drilling site. Accordingly, the drilling process is performed immediately after the press-worked first workpiece W1 starts to be substantially cooled.

  Next, the pressing drive unit 16 is driven to lower the first press die 11 together with the movable plate 19. As a result, the first press die 11 and the second press die 12 start the clamping operation, and the second work W2 introduced between them is provided with the convex molding surface 12a and the concave surface provided on each press die 11, 12. It is press-molded into a shape that follows the molding surface 11b (see FIG. 6). In this state (clamping state), the first driving cylinder 28 contracts in accordance with the clamping operation of the first press die 11 and the second press die 12, so that the second drive is performed by the behavior of the working fluid described above. The cylinder 29 contracts, and the secondary processing portion 17 attached to the piston portion 29b moves backward. Therefore, it is possible to avoid a situation in which the secondary processing portion 17 collides with the second workpiece W2 during press forming.

  In this way, when the press forming for the second workpiece W2 is completed by the first press die 11 and the second press die 12, this state (until the cooling of the first workpiece W1 previously press-formed is completed ( Each press die 11-14 is clamped and locked). Then, after the elapse of a predetermined time from the start of cooling (when press molding is completed), the lock control unit 23 drives the lock mechanism 23 between the third press die 13 and the fourth press die 14, and the third press die 13 and the fourth press die 14. The locked state with the press die 14 is released. Further, the locking mechanism 23 between the first press die 11 and the second press die 12 is driven, and the first press die 11 and the second press die 12 are locked while being clamped together (both in FIG. 6). reference).

  And cooling of the 2nd workpiece | work W2 is started by hold | maintaining the 2nd workpiece | work W2 press-molded with the 1st press die 11 and the 2nd press die 12 in the clamping state. Further, during the cooling, the third press die 13 and the fourth press die 14 released from the locked state in order to take out the first work W1 that has been subjected to press forming, drilling, and heat treatment (quenching) by cooling, Open the mold. Thus, when a predetermined gap is generated between the third press die 13 and the fourth press die 14, the first work W1 on the fourth press die 14 is taken out by a discharge device (robot arm or the like) not shown. Thereby, the 1st work W1 is conveyed to the next process (refer to Drawing 7). At this time, the pin 25 and the locking portion 26 of the lower lock mechanism 23 are rotated to a position parallel to the horizontal direction as shown in FIGS. 6 and 7, and therefore the first workpiece W1. It will not be a hindrance to draining.

  By repeating the above operation, press forming, heat treatment, and hole are performed at two locations (between the first press die 11 and the second press die 12 and between the third press die 13 and the fourth press die 14). Opening is performed.

  As described above, according to the hot press molding apparatus 10 according to the present invention, it is possible to perform secondary processing on the workpiece W1 (W2) that has been press-molded and immediately after the start of cooling, in other words, a relatively high-temperature workpiece W1 (W2). Therefore, even if the drilling process is performed by pressing a drilling pin, the concern of so-called delayed fracture can be eliminated and stable secondary processing quality can be obtained. Further, this secondary processing (drilling processing) can be performed by the secondary processing drive unit 18 that is driven in accordance with the mold opening operation of the pair of press dies 11, 12 (13, 14). There is no need to prepare a power source for processing. Further, since the force required for driving the secondary processing portion 17 is small compared to the force required for driving the press dies 11 to 13, even if the energy at the time of the mold opening operation is used, the drive for pressing The problem that the output of the unit 16 increases does not occur. As mentioned above, according to the said shaping | molding apparatus 10, the installation (especially the drive part 18 for secondary processing) required for secondary processing can be simplified, and hot press molding and secondary processing can be performed at low cost.

  Further, in the present embodiment, the secondary processing drive unit 18 is configured by the two drive cylinders 28 and 29 that allow the working fluid to flow with each other. The energy of time can be smoothly used as the driving force of the secondary processing portion 17. Also, a very simple structure is sufficient. Therefore, it is possible to further simplify the equipment and reduce the cost.

  In the present embodiment, the extension operation and the contraction operation (retraction operation) of the drive cylinders 28 and 29 are synchronized. In other words, when the first drive cylinder 28 interlocked with the movable plate 19 is extended. Accordingly, the second drive cylinder 29 expands, and when the first drive cylinder 28 contracts, the second drive cylinder 29 contracts accordingly. Therefore, the secondary machining portion 17 provided in the piston portion 29b. (Hole drilling pin) can be protruded and retracted without hindering press molding. Therefore, it is possible to simultaneously perform press molding and drilling with easy control.

  As mentioned above, although one Embodiment of this invention was described, this invention can also take a structure other than the above in the range which does not deviate from the meaning.

  For example, in the above-described embodiment, the case where the pressing drive unit 16 and the secondary processing drive unit 18 are provided separately is illustrated, but the secondary processing drive unit is partially used by using the pressing drive unit 16. 18 can also be configured. For example, when a hydraulic cylinder as the pressing drive unit 16 contracts during the mold opening operation, the working fluid inside the cylinder unit is supplied into the cylinder unit 29a of the second drive cylinder 29 via a pressure adjusting unit (not shown). Thus, the secondary processing drive unit 18 can be configured to extend the second drive cylinder 29. In this case, the first drive cylinder 28 is not necessary.

  Moreover, although the case where the press die 15 was comprised with the four press dies 11-14 was illustrated in the said embodiment, as long as the workpiece W1 (W2) can be press-molded in two or more places, the press die 15 is demonstrated. Can be arbitrarily configured. For example, in the press die 15 shown in FIG. 1, although not shown, the intermediate plate 21 is omitted, and a press die (fifth press die) in which the second press die 12 and the third press die 13 are integrated. You may make it provide. In this case, the first press die 11 and the fourth press die 14 are provided with molding surfaces 11b and 14a only on one of the upper and lower sides, respectively, whereas the fifth press die has convex molding surfaces on both upper and lower sides. A concave molding surface is provided.

  Of course, as long as it can be configured, the press die 15 can be composed of five or more press dies, and at this time, a part or all of the press dies excluding both ends are made like the fifth press die. It is also possible to adopt a form having molding surfaces on both upper and lower sides.

  Moreover, in the said embodiment, although the case where the drilling process using a punch pin was performed was illustrated as a secondary process with respect to the press-formed work W1 (W2), of course, when performing another kind of secondary process The present invention can also be applied to. For example, the present invention can be applied to various secondary processing drive units such as edge bending processing, trimming processing, marking processing such as engraving.

  Moreover, in the above description, the case where the plurality of press dies 11 to 14 are arranged one above the other (the case where the mold clamping or the mold opening direction is the direction along the vertical direction) is illustrated, but of course it is necessary to be limited to this. There is no. For example, the present invention can also be applied to the hot press molding apparatus 10 in which a plurality of press dies 11 to 14 are arranged so that the mold clamping or mold opening direction is the horizontal direction.

DESCRIPTION OF SYMBOLS 10 Hot press molding apparatus 11-14 Press die 11b, 13b Concave molding surface 12a, 14a Convex molding surface 15 Press die 16 Press drive part 17 Secondary processing part 18 Secondary processing drive part 19 Movable plate 20 Base plate 23 Lock mechanism 24 Rotating shaft 25 Pin 26 Locking portion 28 First drive cylinder 29 Second drive cylinder 28a, 29a Cylinder portion 28b, 29b Piston portion 30 Cable

Claims (2)

A press die comprising three or more press dies is provided, and the predetermined press dies adjacent to each other among the three or more press dies are mutually locked, and are adjacent to each other and locked to each other. A hot press molding apparatus that enables clamping or opening operation of a set of press dies,
A secondary processing unit for performing a predetermined secondary processing on the workpiece that is provided in the press die and is clamped by the press dies that are locked to each other, and a secondary that drives the secondary processing unit And further includes a machining drive unit,
The hot press forming apparatus, wherein the secondary processing drive unit is configured to be driven in accordance with a mold opening operation of a set of press dies that are not locked to each other.   The secondary processing drive unit includes a first drive cylinder disposed so as to be able to expand and contract in accordance with a clamping or opening operation of a set of press dies that are not locked to each other, and the secondary processing unit 2. A hot press forming apparatus according to claim 1, further comprising: a second drive cylinder attached to the second drive cylinder, wherein the second drive cylinder can be expanded and contracted by using expansion or compression of a working fluid by an expansion / contraction operation of the first drive cylinder.

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