JP2011092946A - Hot-press working device and hot-press working method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a hot-press working device capable of obtaining a press-worked product to which highly accurate work is applied by providing sufficient pressurizing force and of efficiently applying cutting work and quenching to a heated metal plate material as a series of steps for a short time, and to provide a hot-press working method. <P>SOLUTION: The hot-press working device includes: a lower mold base 12 and an upper mold base 13; a servo motor 11; an upper mold 3 movably supported in an approaching/separating direction to the upper mold base 13; a lower mold 2 supported by the lower mold base 12; and a cutting work means for a metal plate material. The upper mold base 13 further includes a back support 9 and a movable spacer 5. The movable spacer 5 is switchably arranged between an interposed position interposed between the back support 9 and the upper mold 3 and a detached position detached from between the back support 9 and the upper mold 3 by a movable spacer drive means 6. When the movable spacer is arranged in the interposed position, the upper mold 3 is made unretreatable toward the upper mold base 13. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a hot press working apparatus and a hot press working method for performing press forming, excision processing, and quenching as a series of steps on a metal plate that has been heated to a high temperature state. In particular, the present invention relates to a hot press working apparatus and a hot press working method capable of applying a sufficient pressing force to a steel plate and processing it with high accuracy.

  In the field of metal processing, the starting metal sheet is heated to its quenching temperature, and the high temperature metal sheet is pressed with a relatively low temperature mold, so that press molding and quenching by mold cooling are performed. A hot pressing method (hot pressing method) performed simultaneously is known. However, in many cases, it is not possible to obtain a metal product of the desired shape by simple hot pressing. Therefore, mechanical cutting such as trimming and drilling is performed on the primary molded product obtained by hot pressing. It was common to obtain a final product by applying For this reason, substantially different processing means for primary molding and final processing are required, and the time required for processing including the transfer time between processes has become longer. In addition, the excision processing after press molding was for the primary molded product whose hardness was increased by quenching at the same time as press molding, so the excision tools such as trim blades were very fragile, and the life of the excision processing tools tends to be shortened There was a problem that.

  As a measure for solving the problem of shortening the tool life in hot press processing, Patent Document 1 discloses a hot press processing method and apparatus for steel. In the processing apparatus of Patent Document 1, the lower die opposite to the upper die (movable die) is supported by floating with a die cushion so that both the upper and lower die can be moved relatively to each other even after die matching. A machining blade (22) and a trim blade (26) are provided on the side as cutting means. In hot pressing, in the process of pressing the steel material heated to the quenching temperature with the upper and lower molds, drilling and trimming with the machining blade and the trim blade are performed simultaneously, and after the drilling, the upper The die presses the lower die against the repulsive force of the die cushion, and the upper die keeps pressing the lower die at the position where the die cushion is fully contracted, thereby rapidly cooling the steel material, so that Quenched. According to the processing method of Patent Document 1, since the high-temperature steel material sandwiched between the upper and lower molds is drilled and trimmed in a substantially unhardened state before being subjected to full-scale quenching, It is said that it is possible to reduce the burden on the trim blade and prevent the shortening of the life of these cutting tools.

JP-A-2005-248253

  However, the hot press processing apparatus and method of Patent Document 1 may not be suitable for molding a large metal plate material or forming a complicated shape. Because, in the hot press processing apparatus of Patent Document 1, since the lower die is supported by the die cushion, the holding force of the lower die is weakened in the initial stage of press processing as the die cushion expands and contracts. There is. When processing a metal plate having a small size, even if the holding power of the lower die is reduced for a short time, there is often no big problem. However, when processing a large metal plate using a larger mold or when processing a complicated shape, a decrease in holding power of the lower mold may cause a decrease in pressure. That is, the hot press processing apparatus provided with the die cushion disclosed in Patent Document 1 and the hot press processing method using this apparatus perform press molding of a larger metal plate material or press processing of a more complicated shape. There is a risk that the required processing accuracy cannot be obtained.

  An object of the present invention is to provide a press-processed product that provides sufficient pressurization and is processed with high accuracy even when pressing a large metal plate material or when pressing a complicated shape. An object of the present invention is to provide a hot press working apparatus and a hot press working method that can be obtained. And it is providing the hot press processing apparatus and hot press processing method which can perform a cutting process and hardening with respect to the heated metal plate material as a series of processes efficiently in a short time.

  A hot press working apparatus of the present invention is a hot press working apparatus for clamping and pressing a heated metal plate material, and includes a first base and a second base provided so as to be relatively close to each other. A substrate driving means for driving at least one of the first and second substrates, a first mold supported so as to be movable toward and away from the first substrate, and the first mold; A second mold supported by the second base, a back support portion fixedly provided on the first base, and can be interposed between the back support and the first mold A movable spacer, an intervening position where the movable spacer is interposed between the back support portion and the first mold, and a separation from the back support portion and the first mold. Movable spacer drive for switching between two positions And a means. In the hot press working apparatus of the present invention, when the movable spacer is disposed at the intervening position, the first mold cannot be retracted toward the first base, and the first and second bases In at least one of the above, when the movable spacer is disposed at the disengagement position, the cutting means for cutting the metal plate material held between the molds when the two bases relatively approach each other. Is provided.

  In the hot press working apparatus of the present invention, since the movable spacer is in the intervening position, the first mold cannot be retracted toward the first base, and both molds are clamped when the two bases are relatively close to each other. The applied pressure is reliably transmitted to the metal plate material, and press forming (shaping) can be performed accurately and reliably. On the other hand, by switching the movable spacer from the interposition position to the disengagement position after mold clamping, a gap is formed between the back support portion and the first mold, and the first mold retreats toward the first base. It becomes possible. The base body drive means can perform the cutting process by the cutting process means on the metal plate material in the middle of quenching by further bringing the both base bodies closer to each other so as to eliminate this gap. That is, with the switching from the interposition position of the movable spacer to the disengagement position, it is possible to quickly perform mold clamping with strong pressure and excision immediately thereafter as a series of steps.

  More preferably, the substrate driving means of the hot press working apparatus of the present invention includes a servo motor. In this specification, the term “servo motor” refers to a servo actuator that can control the position of the base that supports the mold (any position between the top dead center and the bottom dead center in the reciprocating movement range), the moving direction, the moving speed, and the like. (servo actuator) means AC servo motor, DC servo motor, and stepping motor as specific examples.

  The hot press working method of the present invention includes a first base and a second base provided so as to be relatively close to and away from each other, the base driving means, the first mold and the second mold, It is a hot press working method using a hot press working apparatus provided with the back support part, the movable spacer, and the movable spacer driving means. The hot pressing method of the present invention includes a step of arranging a heated metal plate material between the first and second molds spaced apart from each other, and the movable spacer includes the back support portion and the first mold. A step of relatively approaching the first and second bases in a state of being disposed at an intervening position interposed therebetween, and clamping the metal plate with the first and second molds, and after the clamping A step of switching the movable spacer from the interposition position to the separation position; and the first and second substrates in a state where the movable spacer is disposed at the separation position where the movable spacer is separated from between the back support portion and the first mold. Are sequentially moved, and before the quenching of the metal plate held between the molds is completed, the cutting process is performed sequentially on the metal plate in the middle of quenching with the cutting means. It is characterized by.

  In the hot press working method of the present invention, the first die is attached to the first base by clamping the metal plate material with the first and second dies in a state where the movable spacer is disposed at the intervening position. Accordingly, the pressing force is reliably transmitted to the metal plate material when the two molds are clamped as the two substrates are relatively close to each other, and press molding (shaping) can be performed accurately and reliably. Next, by removing the movable spacer from the back support portion and the first mold to the separation position, a gap is formed between the back support portion and the first mold, and the first mold is It becomes possible to retract toward the first substrate. The base body drive means further brings the first and second base bodies relatively closer so as to eliminate this gap, and before the quenching of the metal plate material held between both molds is completed, Excision processing is performed on the metal plate during quenching. That is, after the movable spacer is switched from the interposition position to the disengagement position, the base body driving means can quickly perform the mold clamping by the strong pressurization and the excision immediately thereafter as a series of steps.

  More preferably, the hot pressing method of the present invention includes a step of slightly separating the first and second bases prior to switching the movable spacer from the interposition position to the separation position. This slight relative separation eliminates the high-pressure clamping state of the movable spacer between the back support portion and the first mold, and facilitates the separation of the movable spacer from the interposed position.

  As described above in detail, according to the hot press working apparatus and the hot press working method of the present invention, it is sufficient even when pressing a large metal plate material or pressing a complicated shape. It is possible to provide a hot press working apparatus and a hot press method capable of providing a press-processed product that has been processed with high accuracy by providing a pressing force. And the hot-press-working apparatus and hot-press-working method which can perform a cutting process and hardening with respect to the heated metal plate material as a series of processes efficiently in a short time can be provided.

The front view which shows the outline of the hot press processing apparatus according to one Embodiment. The front view which shows the press molding process by a hot press processing apparatus. The front view which shows the state by which the movable spacer of the hot press processing apparatus was switched to the removal position. The front view which shows the process of excising a metal plate material by the excision process means of a hot press processing apparatus. It is a figure which shows typically the relationship between the rotation angle of a servomotor, and the position of an upper mold | type base | substrate.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the hot press working apparatus of the present embodiment includes a lower mold base 12 that is a fixed base and an upper mold base 13 disposed above the lower mold base 12. The upper mold base 13 is supported by the servo motor 11 so as to be movable in the vertical direction (up and down direction shown in FIG. 1), and can approach and separate from the lower mold base 12.

  On the lower mold base 12, the lower mold 2 as a first mold or a fixed mold is fixedly installed. The lower mold 2 has a dent that opens upward in the central region, and the dent functions as the central die portion 21. An outer convex portion 22 having substantially the same shape and serving as a side wall of the central die portion 21 is formed on the left and right sides of the central die portion 21 with the central die portion 21 interposed therebetween. It has a surface shape. The left and right outer convex portions 22 form part of the lower mold 2, and each outer convex portion 22 is formed with a horizontal upper surface 22a and a vertical outer surface 22b. The horizontal upper surface 22a formed on each outer convex portion 22 of the lower mold 2 presses the metal plate material 1 as a work (processing object) together with the central die portion 21 during press forming, thereby press forming the metal plate material 1. It is a pressing surface for shaping which participates in. On the other hand, the vertical outer surface 22b formed on each outer convex portion 22 has a lower blade 4B formed on the edge between the upper surface 4a and the upper blade 4 on the upper mold 3 side described below. It cooperates and functions as a component of the excision processing means related to the trim processing of the left and right end portions of the metal plate 1.

  On the lower side of the upper mold base 13, the upper mold 3 as a second mold or a movable mold is connected and supported so as to be movable relative to the upper mold base 13 in the vertical direction. Inside the upper mold base 13, a back support portion 9 and a movable spacer 5 are disposed at a position facing the upper mold 3. The back support portion 9 is fixed to the upper surface of the upper mold base 13 and always moves integrally with the upper mold base 13. The movable spacer 5 is separated from the interposed position (see FIGS. 1 and 2) interposed between the upper mold 3 and the back support portion 9 by the movable spacer driving means 6 and between the back support portion 9 and the upper mold 3. It is configured to be movable between two positions of the detached position (see FIGS. 3 and 4).

  The movable spacer 5 shown in FIG. 1 is disposed at an intervening position interposed between the upper mold 3 and the back support portion 9 by a movable spacer driving means 6 (for example, a drive cylinder). On the other hand, the pin 10 is provided on the upper part of the upper die 3 so as to be integrated with the upper die 3, and when the movable spacer 5 is in the intervening position, the upper die base 13, the back support portion 9, and the movable spacer. 5, the pin 10, and the upper die 3 are arranged without a gap in the vertical direction, and the upper die 3 cannot be retracted toward the upper die base 13. On the other hand, the movable spacer 5 shown in FIG. 3 is moved in the horizontal direction by the movable spacer driving means 6 and is rearranged at a separation position where it does not interfere with both the back support portion 9 and the pin 10. When the movable spacer 5 is in the disengagement position as described above, a gap is formed between the back support portion 9 and the pin 10, and the upper mold 3 can be retracted toward the upper mold base 13 by the servo motor 11.

  As shown in FIG. 1, the upper mold | type 3 has the center convex part 31 from which the center area | region protrudes toward the lower surface side. On the left and right sides of the central convex portion 31, there are arranged substantially the same outer peripheral flat portions 32 having a horizontal surface, and the upper die 3 has a convex cross sectional shape as a whole. The shape of the longitudinal section from the horizontal surface of one outer peripheral flat portion 32 of the upper mold 3 to the other outer peripheral flat portion 32 through the outer periphery of the central convex portion 31 is the horizontal upper surface 22a of one outer convex portion 22 of the lower mold 2. It is formed so as to have a shape complementary to a longitudinal section extending from the center die portion 21 to the horizontal upper surface 22 a of the other outer convex portion 22. That is, the horizontal surface formed on the outer peripheral flat portion 32 of the upper mold 3 presses the metal plate 1 together with the central convex portion 31 at the time of press forming, and serves as a pressing surface for shaping involved in the press forming of the metal plate 1. Function.

  As shown in FIG. 1, a pair of left and right upper blades 4 are further provided on the lower side of the upper die base 13 as components of the cutting tool. Since both upper blades 4 are fixed to the upper mold base 13, the upper mold base 13 and the lower mold base 12 and the lower mold 2 can be approached and separated by the servo motor 11 of the driving means. On the other hand, the upper die 3 can move in the vertical direction with respect to the upper die base 13 by changing the position of the movable spacer 5 arranged inside the upper die base 13. The upper mold 3 moves relative to the outer peripheral side surface 32b in the vertical direction.

  The upper mold base 13 is controlled by the servo motor 11 of the driving means to move up and down with respect to the lower mold base 12, that is, the vertical movement amount, so that an arbitrary position between the top dead center and the bottom dead center is obtained. It is possible to stop. As the servo motor 11 in this embodiment, any one of an AC servo motor, a DC servo motor, and a stepping motor is applied.

  As shown in FIG. 2, when the upper mold base 13 is moved so that the lower mold 2 and the upper mold 3 are joined or closest to each other with the movable spacer 5 in the intervening position, the central die of the lower mold 2 is used. The center convex portion 31 of the upper mold 3 is fitted to the portion 21, and the horizontal surfaces of the left and right outer peripheral flat portions 32 of the upper mold 3 are respectively in contact with the upper surfaces 22 a of the left and right outer convex portions 22 of the lower mold 2. You can touch. At this time, the upper mold base 13, the back support portion 9, the movable spacer 5, the pin 10, and the upper mold 3 are arranged without a gap in the vertical direction. That is, since the upper mold 3 is prevented from rising in the vertical direction by the movable spacer 5, it cannot be further retracted toward the upper mold base 13. Thus, when the metal plate 1 is clamped between the lower mold 2 and the upper mold 3 with the movable spacer 5 in the intervening position, the applied pressure is reliably transmitted to the metal plate 1 and press forming is performed. (Shaping) can be performed accurately and reliably. Further, the upper blades 4 arranged on the left and right of the upper mold 3 are held at relative positions such that the lower ends thereof are above the outer peripheral flat portion 32 of the upper mold 3 by the intervention of the movable spacer 5. For this reason, it does not contact the lower blade 4 </ b> B formed on the outer convex portion 22 of the lower mold 2.

  On the other hand, as shown in FIG. 4, when the movable spacer 5 is at the disengagement position and the upper mold base 13 is moved so that the lower mold 2 and the upper mold 3 are joined or closest to each other, the back support portion 9 is moved. Since a gap corresponding to the thickness of the movable spacer 5 in the vertical direction is formed in advance between the upper mold 3 and the pin 10, the upper mold 3 can be further retracted toward the upper mold base 13. 12 and the upper mold | type base | substrate 13 can approach further relatively. As a result, the upper blades 4 arranged on the left and right of the upper die 3 can be lowered to a relative position such that the lower ends thereof are below the outer peripheral flat portion 32 of the upper die 3. When the upper blade 4 slides on the outer surface 22b of the outer convex portion 22 of the lower die 2, it is held between the lower die 2 and the upper die 3 in cooperation with the lower blade 4B. The left and right end portions (removal target portion) of the metal plate 1 are subjected to trimming (specifically, vertical cutting) along the outer surface 22b of the outer convex portion 22 of the lower mold 2 to be slid Can move.

  Next, with respect to the case where the metal plate 1 which is an iron high-tensile steel plate is hot-pressed and the left and right ends thereof are cut off, the processing method using the hot-pressing device of the embodiment is shown in FIGS. This will be described with reference to FIG.

  Prior to the start of hot pressing, the movable spacer 5 in the upper die 3 is moved between the back support portion 9 and the pin 10 integrated with the upper die 3 by the movable spacer driving means 6 as shown in FIG. It is arrange | positioned in the interposition position which interposes. The servo motor 11 separates the upper mold 3 from the lower mold 2 and keeps the upper mold base 13, the upper blade 4 and the upper mold 3 on standby. Next, the metal plate 1 is heated to a temperature of 850 to 1050 ° C. with a heating device (not shown), and the metal plate 1 in a high temperature state is conveyed at high speed from the heating device to a hot press working apparatus, as shown in FIG. Then, it is placed between the lower mold 2 and the upper mold 3 by being placed on the outer peripheral convex portion 22 of the lower mold 2. After the arrangement of the metal plate 1 is completed, the upper die base 13 is moved downward without causing any intermission and is brought relatively close to the lower die base 12, and the metal plate 1 is clamped by the lower die 2 and the upper die 3 as shown in FIG. Thus, the metal plate 1 is press-molded. At this time, the upper die 3 cannot be further retracted toward the upper die base 13 because the movable spacer 5 is interposed between the back support portion 9 and the pin 10. For this reason, the applied pressure from the upper mold 3 is reliably transmitted to the metal plate 1. Further, the vertical position of the blade surface of the upper blade 4 disposed on the left and right of the upper mold 3 is held higher than the vertical position of the outer peripheral flat portion 32 of the upper mold 3. At the time of press molding, the upper blade 4 and the lower blade 4B formed on the outer convex portion 22 of the lower mold 2 are not in contact with each other.

  By the shaping action of the upper and lower molds in this press molding process, the metal plate 1 is press-molded into a predetermined shape corresponding to the shape when the lower mold 2 and the upper mold 3 are joined. The metal plate 1 pressed by the lower mold 2 and the upper mold 3 is quenched at the same time as the press molding. On the other hand, there is no significant temperature drop in the vicinity of the left and right end portions (that is, the excision target portion) of the metal plate 1 that is sandwiched, so that no burning occurs. Therefore, at this stage, the portion sandwiched between the lower mold 2 and the upper mold 3 of the metal plate 1 is hardened by quenching prior to the left and right ends, but the left and right ends of the metal plate 1 are 600 ° C. or higher. This temperature is maintained and curing does not start.

  Subsequently, the movable spacer driving means 6 moves the movable spacer 5 from the interposed position to the detached position as shown in FIG. Prior to this, the servo motor 11 moves the upper mold 3 in the direction indicated by the arrow A in FIG. Thereby, the movable spacer driving means 6 can quickly switch the movable spacer 5 to the disengagement position with a smaller driving force. Since the movable spacer 5 is moved to the separation position, the movable spacer is interposed between the back support portion 9 that can move integrally with the upper die base 13 and the pin 10 that is integrally formed with the upper die 3. A gap corresponding to a vertical thickness of 5 is formed.

  When the movement of the movable spacer 5 to the separation position is completed, the servo motor 11 lowers the upper mold base 13 in the direction of the arrow B in FIG. 4 so that the upper mold base 13 further approaches the lower mold base 12. Since a vertical gap is formed between the upper mold base 13 and the upper mold 3 along with the movement of the movable spacer 5, the upper mold 3 can be further retracted from the upper mold base 13. As a result, the upper mold base 13 and the lower mold base 12 can be further brought closer to each other without changing the relative position of the upper mold 3 to the lower mold 2. As shown in FIG. 4, when the upper blade 4 slides on the outer surface 22 b of the outer convex portion 22 of the lower mold 2, the upper blade 4 cooperates with the lower blade 4 </ b> B between the lower mold 2 and the upper mold 3. Trimming along the outer side surface 22b of the outer convex portion 22 is performed on the left and right end portions of the metal plate 1 held under pressure. In this way, the metal plate 1 held between the lower die 2 and the upper die 3 is quickly cut by the cutting means comprising the upper blade 4 and the lower blade 4B before quenching is completed. Applied.

  In the hot press working method shown in the above embodiment, the specific drive contents of the upper mold base 3 performed by the servo motor 11 will be described with reference to FIG. FIG. 5 schematically shows the rotational angle of the servo motor 11 and the positional relationship of the upper mold base 3 corresponding thereto. FIG. 5A shows the rotation angle of the servo motor 11 and the upper mold base 12 with respect to the lower mold base 12 when the upper mold base 13 is held at the top dead center so that the upper mold 3 is separated from the lower mold 2. 13 relative positions are shown. The rotation angle of the servo motor 11 is 0 °. FIG. 5B shows the rotation angle of the servo motor 11 and the lower mold base when the metal plate 1 is sandwiched between the lower mold 2 and the upper mold 3 and pressing is started when the movable spacer 5 is in the intervening position. 12 shows the relative position of the upper mold base 13 with respect to 12. The rotation angle of the servo motor 11 at the start of press working is controlled to rotate 160 ° to 170 ° clockwise. FIG. 5C shows the rotation angle of the servo motor 11 and the upper mold substrate 12 with respect to the lower mold substrate 12 when the upper mold substrate 13 is slightly separated from the lower mold substrate 12 before the movable spacer 5 is moved to the separation position. 13 relative positions are shown. The rotation angle of the servo motor 11 is returned by 1 to 2 degrees counterclockwise with respect to the start of pressing and is stationary. FIG. 5D shows the rotation angle of the servo motor 11 and the lower mold when the upper mold base 13 is moved to the bottom dead center when the movable spacer 5 is in the detached position and the metal plate 1 is cut. The relative position of the upper mold base 13 with respect to the base 12 is shown. The rotation angle of the servo motor 11 is rotated by 180 °. As described above, when the upper mold base 13 is held at the top dead center of the movement range, the rotation angle of the servo motor 11 in this embodiment is 0 °, and when the upper mold base 13 is held at the bottom dead center of the movement range. The rotation angle is configured to be 180 °. By using the servo motor 11 as the substrate driving means, the ascent and descent speed of the upper die substrate 13 can be arbitrarily controlled, and can be accurately stopped and held at a predetermined position. In the hot press working apparatus of the present embodiment, the upper mold base 13 that holds the upper mold 3 can be arranged at any position between the top dead center and the bottom dead center by the servo motor 11. It is classified as "press machine".

  As described above, according to the hot press working apparatus of the present embodiment, by providing the movable spacer 5 and the movable spacer driving means, the pressurizing force during the press working can be reliably transmitted to the metal plate 1 and press forming is performed. (Shaping) can be performed accurately and reliably. Moreover, by adopting a unique hot press working method by driving the servo motor 11, it is possible to efficiently perform cutting and quenching as a series of steps on the heated metal plate material in a short time. .

  [Modification] In the above embodiment, the upper blade 4 is provided on the upper die 3 side, but a similar trim blade may be provided on the lower die 2 side. Moreover, although the hot press processing apparatus and method which use the upper blade 4 and the lower blade 4B as a cutting tool were demonstrated, the hot press processing apparatus and method which use the punch or piercing for drilling as a cutting tool The present invention can also be applied to.

  [Modification] In the above-described embodiment, the upper base is configured to be movable as the first base and the lower base is fixed as the second base. However, the arrangement and movement of the base are relative to each other. Therefore, the positional relationship between the top, bottom, left and right, or the mode of movement and fixation can be exchanged as appropriate.

  DESCRIPTION OF SYMBOLS 1 ... Metal plate material, 2 ... Lower mold | type, 3 ... Upper mold | type, 4 ... Upper blade (cutting process means), 4B ... Lower blade (cutting process means), 5 ... Movable spacer, 6 ... Movable spacer drive means, 9 ... Back Support part, 10 ... pin, 11 ... servo motor (base drive means), 12 lower mold base, 13 ... upper base

Claims (4)

A hot press working apparatus for clamping and pressing a heated metal plate material,
A first base and a second base provided so as to be capable of relative approach and separation;
Substrate driving means for driving at least one of the first and second substrates;
A first mold supported so as to be movable toward and away from the first base body;
A second mold supported by the second substrate;
A back support portion fixedly provided on the first base;
A movable spacer that can be interposed between the back support portion and the first mold;
Two positions: an intervening position where the movable spacer is interposed between the back support portion and the first mold, and a separation position where the movable spacer is separated from between the back support portion and the first mold. A movable spacer driving means for switching and arranging between,
When the movable spacer is disposed at the interposition position, the first mold cannot be retracted toward the first base body,
At least one of the first and second bases is cut away from the metal plate held between the molds when the bases are relatively close to each other with the movable spacer disposed at the separation position. A cutting means for processing is provided,
A hot press machine characterized by the above.   The hot press working apparatus according to claim 1, wherein the substrate driving means includes a servo motor. A hot pressing method using the apparatus according to claim 1 or 2,
Placing a heated metal plate between the spaced apart first and second molds;
The first and second molds are moved closer to each other while the movable spacer is disposed at an intervening position interposed between the back support portion and the first mold. A process of clamping a metal plate with a mold;
Switching the movable spacer from the interposition position to the disengagement position after the mold clamping;
In a state where the movable spacer is disposed at a separation position where the movable spacer is separated from the space between the back support portion and the first mold, the first and second bases are further moved closer to each other and held between the molds. Before the quenching of the metal plate material is completed, the step of cutting the metal plate material in the middle of quenching with the cutting means,
Are sequentially performed.   The hot press working method according to claim 3, wherein the first and second bases are slightly separated from each other before the movable spacer is switched from the interposition position to the separation position.

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