JP6709947B1 - Pressing device and pressing method - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a pressing device and a pressing method capable of generating a sufficient pressing force on a pressing surface even when pressing in a wide area. A press device (1) applies a pre-pressing force to a press head (100) including a press plate (110), a chamber base (120) and an elastic packing (130), a pre-pressing plate (210) that transmits the pre-pressing force, and a pre-pressing plate (210). And a preliminary pressing unit 200 including a preliminary pressing force applying mechanism 220. With the elastic packing 130 compressed and deformed by the preliminary pressing by the preliminary pressing unit 200, by introducing the pressure fluid from the pressure fluid source 400 into the chamber 10, the main pressing force to the work on the press surface is generated. It further comprises a holding means 300 which holds the movement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2 and restricts the displacement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2. [Selection diagram] Figure 1

Description

The present invention relates to a pressing device and a pressing method.

BACKGROUND ART Conventionally, a pressing device that presses a work that is an object to be pressed has been known. Patent Document 1 discloses a molding die as a press device. FIG. 7A is a cross-sectional view shown for explaining the forming die (conventional pressing device 800) described in Patent Document 1.

As shown in FIG. 7A, a conventional pressing device 800 has a pressure chamber 805 opened downward in a body 801 a of an upper die 801, and a through hole 806 that conducts the pressure chamber 805 upward. A pusher 803 is provided in the pressure chamber 805, and a piston 802 is provided in the through hole 6 so as to be vertically movable. A pressure transmission medium 804, which is an incompressible fluid, is enclosed in a space (enclosed space 810) between the piston 802 and the pusher 803. At the time of mold clamping, a load acts on the piston 802 from the press upper heating plate 809, and the load acts on the pusher 803 via the pressure transmission medium 804. The work 815 is pressed using this load.
Since the pressure transmission medium 804 is enclosed in the enclosed space 810, its volume is basically constant. Further, the function of the pressure transmission medium 804 serves as a simple “inclusion” for transmitting a force to displace (stroke) the pusher 803 in the direction of the lower die 807.

According to the conventional press device 800, since the pressure transmission medium 804 is a fluid, the load applied by the piston 802 is transmitted so as to be evenly distributed over the entire upper surface of the pusher 803. Therefore, the state of the surface pressure obtained on the press surface 811 of the pusher 803 can be made uniform.

Patent Document 2 discloses an imprint apparatus as a press apparatus. FIG. 7B is a cross-sectional view shown for explaining the imprint apparatus (another conventional press apparatus 900) described in Patent Document 2.

As shown in FIG. 7( b ), another conventional pressing device 900 includes a pressurizing chamber 930, a pressurizing chamber housing 933, a rigid member 911, and a sealing member 912 that engages with a recess formed therein. (Chamber) is formed.

According to another conventional pressing device 900, the mold 901 and the object to be molded 902 (collectively referred to as a work) are sandwiched by the rigid member 911 and the pressure receiving stage 932. At this time, the sealing member 912 is not crushed in the pressing direction D3 and is not particularly deformed. Then, by introducing a fluid from the pressurizing means 935 (pressure fluid source) into the pressurizing chamber 930, the rigid body member 911 is displaced (stroked) downward from the current state, whereby the mold 901 and the molding target 902 are formed. Can be pressurized by the rigid member 911.

Japanese Utility Model Publication No. 5-51616 International Publication No. 2013/035759

By the way, in the case of handling a work having a large area, for example, in the conventional pressing device 800, the area of the pusher 803 (the area of the pressing surface 811 in plan view) is correspondingly increased. In this case, a large pressing force corresponding to the area is generated on the pressing surface 811 by the Pascal's principle. However, the drag force that the press surface 811 receives from the work 815 at the time of pressing also increases accordingly. The reaction force is transmitted to the piston 802 via the press surface 811, the pusher 803, and the pressure transmission medium 804, and pushes the piston 802 upward, and when this happens, the pressing force generated on the press surface 811 is reduced.

However, in the conventional pressing device 800, no special device for withstanding the drag force is disclosed, and the problem of the drag force cannot be solved when pressing in a wide area. Therefore, it may not be possible to generate a sufficient pressing force on the pressing surface 811. The work 815 described in the cited document 1 assumes an object to be pressed that is deformed to a considerable extent when pressed, and in such a case, since the drag force is relatively small, the problem does not become apparent. .. However, for example, in the case of a work that includes a material having high rigidity in part or in whole, such a problem of the drag becomes obvious, and a sufficient pressing force cannot be generated on the pressing surface.

In another conventional pressing device 900, no particular device for withstanding the above-mentioned drag is disclosed, and the problem of the drag cannot be solved when pressing in a wide area. Therefore, it may not be possible to generate sufficient pressing force on the pressing surface (the lower surface of the rigid member 911).

Therefore, the present invention has been made in view of the above circumstances, and an object of the present invention is to provide a pressing device that can generate a sufficient pressing force on the pressing surface even when pressing in a wide area. Another object of the present invention is to provide a pressing method capable of generating a sufficient pressing force on the pressing surface even when pressing in a wide area.

[1] According to one aspect of the present invention, there is provided a press device that drives a press plate by fluid pressure in a chamber to press a work. This pressing device includes the "press plate" having a pressing surface serving as a work contact surface, a "chamber base" arranged to face the pressing plate, and a ring shape when viewed in plan. A press head including a "elastic packing" arranged between a plate and the chamber base, a "preliminary pressing plate" for transmitting a preliminary pressing force in a preliminary pressing direction in which the work is arranged, and A preliminary pressing unit that is disposed on the side opposite to the side on which the work is disposed as viewed from the preliminary pressing plate and that includes a "preliminary pressing force applying mechanism" that applies the preliminary pressing force to the preliminary pressing plate. ..
In this pressing apparatus, the chamber is constituted by a space surrounded by the inner surface of the pressing plate, the inner surface of the chamber base and the elastic packing. In the chamber, in the state in which the elastic packing is compressed and deformed by the preliminary pressing by the preliminary pressing unit, the pressure fluid is introduced into the chamber from the pressure fluid source, so that the main pressing force to the work on the press surface is obtained. Is configured to occur. Further, the pressing device includes a pressing means for pressing the movement of the preliminary pressing plate in the direction opposite to the preliminary pressing direction which is the opposite direction to the preliminary pressing direction.

[2] In the above-mentioned pressing apparatus, a packing groove is formed on the inner surface side of at least one of the pressing plate and the chamber base body which face each other, and the elastic packing is dropped into the packing groove so that the packing groove is formed. May be configured to engage with.

[3] In the pressing device according to the above [1] and [2], the pressing means is composed of a stopper, and a part of the stopper is brought into contact with or fixed to a predetermined fixing portion, and another part thereof is It may be configured to directly abut with the preliminary pressing plate or indirectly through a member connected to the preliminary pressing plate.

[4] In the pressing device according to [3], the stopper is fitted between the first wall of the fixing portion and the second wall of the preliminary pressing plate or a member connected to the preliminary pressing plate. It may be a wedge-shaped member, and the wedge-shaped member may have a stepwise shape in which the thickness discretely changes.

[5] In the pressing device according to the above [3], the stopper is fitted between the first wall of the fixed portion and the second wall of the preliminary pressing plate or a member connected to the preliminary pressing plate. It may be a wedge-shaped member, and the wedge-shaped member may have a tapered shape whose thickness continuously changes.

[6] In the pressing device according to the above [1] to [5], the chamber base may also serve as the preliminary pressing plate.

[7] Alternatively, in the pressing device according to the above [1] to [5], the preliminary pressing plate and the pressing plate are arranged so as to face each other so as to sandwich the work, and the press head is located below the work. It may be arranged.

[8] According to one aspect of the present invention, there is provided a pressing method for pressing a work by using a predetermined pressing device.
The predetermined press device includes a "press plate" having a press surface serving as a work contact surface, a "chamber base" arranged to face the press plate, and a ring shape when seen in a plan view. A press head including a "elastic packing" arranged between a plate and the chamber base, a "preliminary pressing plate" for transmitting a preliminary pressing force in a preliminary pressing direction in which the work is arranged, and A preliminary pressing unit including a "preliminary pressing force applying mechanism", which is arranged on the side opposite to the side where the work is arranged as viewed from the preliminary pressing plate and applies the preliminary pressing force to the preliminary pressing plate; Holding means for holding the movement of the preliminary pressing plate in the anti-preliminary pressing direction opposite to the pressing direction, wherein the chamber is surrounded by the inner surface of the pressing plate, the inner surface of the chamber base and the elastic packing. It is composed of a closed space.
This pressing method includes a preliminary pressing unit advancing step of advancing the preliminary pressing unit in the direction in which the work is arranged, and further moving the preliminary pressing unit in the direction in which the work is arranged to reserve the work. A pre-pressing step of pressing and directly or indirectly compressing and deforming the elastic packing; and enabling the pressing means while keeping the elastic packing in the compressed and deforming direction in the anti-pre-press direction of the pre-pressing plate. And a step of activating the pressing plate by driving a pressing fluid from a pressure fluid source into the chamber to generate a final pressing force for the work on the pressing surface. And a pressing step in this order.

According to the pressing apparatus and the pressing method of the present invention, it is possible to generate a sufficient pressing force on the pressing surface even when pressing in a wide area.

FIG. 3 is a diagram for explaining the press device 1 according to the first embodiment. 6 is a flowchart for explaining the pressing method according to the first embodiment. 5 is a cross-sectional view shown for explaining a preliminary pressing unit advancing step S20 to a main pressing step S50 in the pressing method according to the first embodiment. FIG. FIG. 6 is a cross-sectional view shown for explaining a press device 2 according to a second embodiment. It is a figure shown in order to demonstrate a modification. It is a figure shown in order to demonstrate a modification. FIG. 9 is a cross-sectional view shown for explaining a forming die (conventional pressing device 800) described in Patent Document 1 and an imprinting device (another conventional pressing device 900) described in Patent Document 2.

Hereinafter, embodiments of a pressing device and a pressing method according to the present invention will be described with reference to the drawings. Each drawing is a schematic diagram showing an example, and does not necessarily reflect actual dimensions, ratios, and the like strictly.

[Embodiment 1]
1. Configuration of Press Device 1 According to First Embodiment FIG. 1 is a diagram for explaining the press device 1 according to the first embodiment. FIG. 1A is a sectional view of the press device 1. FIG. 1B is a view when the elastic packing 130 is cut along the AA cutting line in FIG. 1A and viewed along the preliminary press direction D1, and the press plate 110 is also shown. .. The state of the elastic packing 130 and the press plate 110 depicted in FIG. 1A is the same as the state of the BB sectional view in FIG. 1B.

(1) Outline of Press Device 1 As shown in FIG. 1A, the press device 1 according to the first embodiment drives a press plate 110 (described later) by a fluid pressure in a chamber 10 (described later) to work W. Is a press device for pressing. The press device 1 includes a press head 100 and a preliminary pressing unit 200.

The work W is an object to be pressed. The work W may be of any type. For example, it may be a work that is subjected to a laminating process. In FIG. 1A, the work W made of the material m1, the material m2, and the adhesive a1 is illustrated. The pressing device 1 according to the first embodiment can be suitably implemented even when the material m1 is a material having high rigidity.
In the first embodiment, the work W is arranged between the press plate 110 (described later) and the table 500 that is the base.

(2) Press head 100
The press head 100 is a head for applying a pressing force to the work W to press it. The press head 100 includes a press plate 110, a chamber base 120, and an elastic packing 130.

The press plate 110 has a press surface 111 that is a surface that contacts the work W (work contact surface). Further, the press plate 110 has an “inner surface 112 of the press plate” that is a part of the chamber 10 described later on the side opposite to the press surface 111 when viewed from the press plate 110. The press plate 110 is a rigid body.
The press surface 111 is a surface that contacts the work W and presses the work W. The pressing surface 111 may have any shape. The pressing surface 111 may be a flat surface as shown in the drawing, may be a curved surface, or may be a surface provided with irregularities according to the shape above the work W.
The "press plate inner surface 112" may have any shape, but is preferably a flat surface.
When the press device 1 is applied as a laminator, a heater (not shown) may be built in the press plate 110 and/or the table 500.

The chamber substrate 120 has an “inner surface 122 of the chamber substrate” that forms a part of the chamber 10. The chamber substrate 120 is arranged to face the press plate 110 such that the “chamber substrate inner surface 122” faces the press plate inner surface 112. The “inner surface 122 of the chamber substrate” may have any shape, but it is desirable that it is a flat surface corresponding to the above example because it forms the chamber 10 together with the inner surface 112 of the press plate.
The chamber base 120 has an “outer surface 121 of the chamber base” opposite to the “inner surface 122 of the chamber base” when viewed from the chamber base 120. The chamber substrate 120 is a rigid body.
The chamber substrate 120 is provided with a fluid introduction port 125 penetrating between the outside of the chamber substrate 120 and the “inside surface 122 of the chamber substrate”, and the pressure fluid FL (described later) is introduced into the chamber 10 through the fluid introduction port 125. ) Can be introduced.

The elastic packing 130 is a member that elastically deforms when a force is applied from the outside. The shape of the cross section of the elastic packing 130 taken along a plane perpendicular to the lengthwise direction is not particularly limited, but may be circular, for example (see FIG. 1A).
Further, as shown in FIG. 1B, the elastic packing 130 has a ring shape when viewed along the preliminary pressing direction D1 (when viewed in plan). The area inside the ring corresponds to the chamber 10.
The elastic packing 130 is disposed between the press plate 110 and the chamber base 120, and blocks the movement of a substance between the inner region and the outer region of the ring.

(3) Preliminary pressing unit 200
The pre-press unit 200 is a unit that pre-presses the work W in the pre-press direction D1 and compresses and deforms the elastic packing 130. The preliminary pressing unit 200 includes a preliminary pressing plate 210 and a preliminary pressing force applying mechanism 220.

The preliminary pressing plate 210 transmits the preliminary pressing force in the preliminary pressing direction D1 which is the direction in which the workpiece W is arranged. In addition, in the press device 1 according to the first embodiment, the chamber base 120 described above also serves as the preliminary pressing plate 210.
The preliminary pressing plate 210 is a rigid body. It is desirable that the inner surface of the preliminary pressing plate 210 on the workpiece W side is a flat surface. The preliminary pressing plate 210 has a second wall 212 on the side opposite to the work W arrangement side when viewed from the preliminary pressing plate 210. The second wall 212 is a wall that comes into contact with the holding means 300 (described later).

The preliminary pressing force applying mechanism 220 is a mechanism that applies a preliminary pressing force to the preliminary pressing plate 210. The preliminary pressing force applying mechanism 220 is arranged on the side opposite to the side on which the workpiece W is arranged as viewed from the preliminary pressing plate 210.
The preliminary pressing force applying mechanism 220 is schematically shown by an appropriate member (no reference numeral) connected to the preliminary pressing plate 210 and a thick arrow in FIG. Can be applied in any configuration. For example, it may be realized by a servomotor and a ball screw or the like not shown, or may be realized by a hydraulic cylinder not shown.
The preliminary pressing force applying mechanism 220 has a function of changing the distance between the work W and the preliminary pressing plate 210 as well as the function of applying the preliminary pressing force. The head 100 may also be lifted up and down to change the clearance between the work W and the head W.

(4) Chamber 10 and Main Pressing Force Generating Mechanism The chamber 10 is constituted by the space surrounded by the inner surface 112 of the press plate, the inner surface 122 of the chamber base and the elastic packing 130 described above.
In this chamber 10, the pressure fluid FL is introduced from the pressure fluid source 400 into the chamber 10 in the state where the elastic packing 130 is compressed and deformed by the preliminary pressing by the preliminary pressing unit 200. By doing so, the main pressing force PR2 of the pressing surface 111 against the work W <<the reference numeral will be described later with reference to Fig. 3(e)>> is generated.
The pressure fluid source 400 may be composed of, for example, a fluid source (not shown) such as a compressed air source of a factory and a pressure booster (not shown) that increases the fluid pressure from the fluid source. The pressure fluid FL supplied from the pressure fluid source 400 is introduced into the chamber 10 from the fluid introduction port 125 of the chamber base 120 through a fluid passage such as the tube 490. Although the pressure fluid source 400 is arranged outside the press device 1 in FIG. 1A, the present invention is not limited to this, and the pressure fluid source 400 may be included inside the press device 1. Good.

(5) Presser means 300
When the main pressing force PR2 is generated, a large drag force from the work W side is generated. For this reason, the press device 1 is further provided with a holding means 300 so as to withstand the drag force. The holding means 300 holds the movement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2, which is the opposite direction of the preliminary pressing direction D1, and restricts the displacement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2.

The holding means 300 may be realized in any configuration. In the example shown in FIG. 1, the holding means 300 is composed of a stopper 310.
Specifically, the stopper 310 is a wedge-shaped member that is inserted between the first wall 511 of the fixing portion 510 and the second wall 212 of the preliminary pressing plate 210, and the wedge-shaped member has a thickness of It has a stepwise shape that discretely changes (a stepwise wedge-shaped member 312).
The fixed portion 510 is a fixed portion with respect to the base (table 500) and is also a rigid body portion.

In the pressing apparatus 1 according to the first embodiment, a part of the stopper 310 is in contact with a predetermined fixing portion 510 (“fixed” in modification 7 described later), and another part thereof is the preliminary pressing plate 210. It is configured to directly contact (indirectly via a member connected to the preliminary pressing plate 210 in Modification 4 described later).
In the example shown in FIG. 1, a part of the stopper 310 (a stepped step portion) is brought into contact with a predetermined fixing portion 510, and another part thereof (a portion on the side opposite to the step portion) is reserved. It is configured to directly contact the pressing plate 210.

2. Operation/Pressing Method of Press Apparatus 1 According to First Embodiment Next, the pressing method according to the first embodiment will be described with reference to FIGS. 2 and 3. Since the operation of the pressing apparatus 1 according to the first embodiment has substantially the same contents as the pressing method according to the first embodiment, the following description of the pressing method is used for the description of the operation of the pressing apparatus 1.

FIG. 2 is a flowchart for explaining the pressing method according to the first embodiment. FIG. 3 is a cross-sectional view shown for explaining the preliminary pressing unit advancing step S20 to the main pressing step S50 in the pressing method according to the first embodiment. In any of FIGS. 3A to 3E, only main parts for explanation are shown and the other parts are omitted.

(1) Outline of Pressing Method According to First Embodiment The pressing method according to the first embodiment is a method of pressing a work using a predetermined pressing device described below.
That is, the predetermined press device is a "press plate 110" having a press surface 111 which is a work contact surface, a "chamber base 120" arranged to face the press plate 110, and a ring shape when seen in a plan view. The press head 100 including the "elastic packing 130" arranged between the press plate 110 and the chamber base 120, and the preliminary pressing force PR1 <<symbol in the preliminary pressing direction D1 in which the workpiece W is arranged. Is attached to the “preliminary pressing plate 210 ”, which transmits “see FIG. 3C” below, and the side opposite to the side on which the work W is arranged as viewed from the preliminary pressing plate 210. A preliminary pressing unit 200 including a "preliminary pressing force applying mechanism 220" for applying a preliminary pressing force, and a pressing means 300 for suppressing the movement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2 which is the opposite direction to the preliminary pressing direction D1. The chamber 10 is constituted by a space surrounded by the inner surface 112 of the press plate, the inner surface 122 of the chamber base, and the elastic packing 130 (see also FIG. 1).

As shown in FIG. 2, the pressing method according to the first embodiment includes a preliminary pressing unit advancing step S20, a preliminary pressing step S30, a pressing means enabling step S40, and a main pressing step S50 in this order.
The work material supplying step S10 may be provided before the preliminary pressing unit advancing step S20. In addition, after the main pressing step S50, a pressure fluid introduction releasing step S60, a pressing means invalidating step S70, and a preliminary pressing unit retracting step S80 may be provided in this order (all steps are not shown).

(2) Details of pressing method (2-1) Work material supplying step S10
The work feeding step S10 is a step of placing the work W between the table 500 and the press head 100 and feeding the work W to the press device 1.

(2-2) Preliminary pressing unit advance process S20
FIG. 3A is a sectional view showing the preliminary pressing unit advancing step S20.
The preliminary pressing unit advancing step S20 is a step of advancing the preliminary pressing unit 200 in the direction D3 in which the workpiece W is arranged. Specifically, a state in which the front surface side and the back surface side of the work W are in contact with other members including the press surface 111, and the elastic packing 130 is not yet compressed and deformed <<The state shown in FIG. 3B in the first embodiment>> This is the step of advancing the preliminary pressing unit 200 up to.
At this time, in the press head 100, the elastic packing 130 is not compressed and deformed, and the distance between the press plate 110 and the chamber base 120 (chamber gap) is approximately G1.
In the first embodiment, since the preliminary pressing plate 210 of the preliminary pressing unit 200 also serves as the chamber base body 120 of the press head 100, the press head 100 also advances (lowers) as the preliminary pressing unit 200 advances (lowers). To do.

(2-3) Preliminary pressing step S30
FIG. 3B is a cross-sectional view showing a step of starting the preliminary pressing step S30. The lower part of FIG. 3(b) is an enlarged cross-sectional view of an essential part of an enlarged area surrounded by a chain double-dashed line C in the upper part of FIG. 3(c) to 3(e) below. The same applies to the chain line C>>. FIG. 3C is a sectional view showing a stage where the preliminary pressing step S30 is completed.
The pre-pressing step S30 is a step of further moving the pre-pressing unit 200 in the direction D3 in which the work W is arranged to pre-press the work W and directly or indirectly compress and deform the elastic packing 130.
When the preliminary pressing step S30 is performed, the elastic packing 130 is compressed and deformed by the preliminary pressing force PR1. Therefore, if the chamber gap is G1 before the start of the preliminary pressing step S30, it will be G2 (where G2<G1) after the completion of the preliminary pressing step S30.

(2-4) Presser means enabling step S40
FIG. 3D is a sectional view shown for explaining the pressing means enabling step S40.
The pressing means enabling step S40 is a step of enabling the pressing means 300 while keeping the elastic packing 130 in a compressed and deformed state to restrict the displacement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2.
Specifically, for example, while using a stopper 310 (more specifically, a step-shaped wedge-shaped member 312 whose thickness is discretely changed) as the pressing means 300, the stopper 310 is fixed to the first portion of the fixing portion 510. The pressing means 300 is activated by being fitted between the first wall 511 and the second wall 212 of the preliminary pressing plate 210. At this time, a part of the stopper 310 (stepped step portion) is brought into contact with a predetermined fixing portion 510, and another part of the stopper 310 (a portion on the side opposite to the step portion) is used as the preliminary pressing plate 210. Abut directly.
This can prevent the preliminary pressing plate 210 from moving in the anti-preliminary pressing direction D2. At this time, the chamber gap maintains about G2. The position of the pressing surface 111 in this state <<(d)>> is the origin (main pressing origin) when the main pressing is performed.
It should be noted that the power source of the preliminary pressing force applying mechanism 220 may be turned off during the period from the activation of the pressing means 300 to the execution of the main pressing step S50 to the pressure fluid introduction releasing step S60.

(2-5) Main pressing step S50
FIG. 3E is a sectional view shown for explaining the main pressing step S50.
The main pressing step S50 is a step of driving the press plate 110 by introducing the pressure fluid FL from the pressure fluid source 400 into the chamber 10 to generate the main pressing force PR2 against the work W on the press surface 111.
Specifically, the pressure fluid FL supplied from the pressure fluid source 400 is introduced into the chamber 10 from the fluid introduction port 125 of the chamber substrate 120 through the fluid passage such as the tube 490. The pressure of the pressure fluid FL can be set appropriately.
By carrying out the above steps, the main pressing force PR2 is generated, the work W is pressed in the thickness direction, and the intended purpose imposed on the pressing machine can be achieved.
At this time, the gap of the chamber is Gx (where G2≦Gx<G1).

(2-6) Post-treatment After that, in the pressure fluid introduction release step S60, the introduction of the pressure fluid FL into the chamber 10 is interrupted, and the inside of the chamber 10 is opened to the atmosphere (not shown). Next, in the pressing means invalidating step S70, the pressing means 300 is released/invalidated (not shown). Next, in the preliminary pressing unit retreating step S80, the preliminary pressing unit 200 is moved (retracted) in the direction opposite to the direction D3 in which the work W is arranged, and a clearance between the work W and a predetermined member is generated ( (Not shown). In this way, the pressed work W′ (not shown) can be taken out.

3. Effects of the pressing device 1 and the pressing method according to the first embodiment Since the pressing device 1 according to the first embodiment has the configuration as described above, the following effects can be achieved.

(1) The press device 1 according to the first embodiment includes the “holding means 300” as described above. Therefore, even when a large reaction force is generated from the side of the work W during pressing, the holding means 300 regulates the displacement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2. The movement in the anti-preliminary pressing direction D2 can be suppressed. As a result, a sufficient pressing force PR2 can be generated on the pressing surface 111 without changing the volume of the chamber 10, that is, without decreasing the fluid pressure in the chamber 10.
As described above, according to the pressing device 1 according to the first embodiment, it is possible to generate a sufficient pressing force on the pressing surface even when pressing in a wide area.

When pressing in a particularly wide area, the pressing device 1 according to the first embodiment can be preferably applied.
For example, it is assumed that the area of the chamber 10 in plan view (the area inside the ring formed by the elastic packing 130) corresponding to the size of the work W is 400 cm 2 (length 20 cm×width 20 cm). .. It is assumed that the pressure of compressed air in the factory is 0.5 MPa (5 kgw/cm2), and the air (20 kgw/cm2) that is four times this pressure by the pressure booster is used as the "pressure fluid FL". When this pressure fluid FL is introduced into the chamber 10, the force generated in the region inside the ring (and thus the main pressing force PR2 generated on the pressing surface 111) is 400×20=8000 kgw=8 tw, which is correspondingly large. Become. Therefore, the magnitude of the drag force also depends on the characteristics of the work W (for example, 8 tw).
Therefore, for example, in another conventional pressing device 900, the pressurizing chamber housing 933 cannot withstand the drag force and is pushed back upward, and the pressing force generated on the pressing surface (the lower surface of the rigid member 911) is then increased. Will be reduced.
On the other hand, according to the pressing device 1 according to the first embodiment, since the pressing means 300 as described above is provided, such a situation does not occur and a sufficient pressing force PR2 can be generated on the pressing surface 111. ..

(2) Further, in the press device 1 according to the first embodiment, the substantial stroke amount in the main pressing is extremely small. That is, based on the level of the pressing surface 111 at the time when the above-mentioned pressing means enabling step S40 is completed, the amount by which the compressed elastic packing 130 is expanded toward the original state by the introduction of the pressure fluid FL (displacement). ) Is a substantial stroke amount in the main pressing. Macroscopically speaking, this substantial stroke amount can be said to be almost zero.
In this way, in the main pressing (main pressing step S50) in which a large force is exerted, the stroke of the related members is extremely small, so that the pressing apparatus 1 according to the first embodiment is a highly safe pressing apparatus. .. Further, even if the introduction of the pressure fluid FL becomes incomplete due to some failure, the pressure in the chamber 10 only decreases, and the stroke of the pressing surface 111 in the pressing direction does not occur any more. Also in this respect, the pressing device 1 according to the first embodiment is a highly safe pressing device.
On the contrary, since the stroke required for the main pressing is extremely small, the height of the chamber 10 can be minimized, and the volume of the chamber 10 can be minimized correspondingly. Therefore, space efficiency is good, and it is possible to output a high main pressing force with smaller energy. Therefore, the pressing device 1 according to the first embodiment is a resource-saving pressing device.

(3) In addition, during the main pressing (main pressing step S50), the reaction force is held by the holding means 300/stopper 310, so during that time (time), the power of the preliminary pressing force applying mechanism 220 is reduced. (For example, a servo motor (not shown)) may be turned off. Therefore, the pressing device 1 according to the first embodiment is an energy-saving pressing device.
For example, a high output servomotor (not shown) may be used in place of the stopper 310 to output a force that opposes the above 8 tw to suppress the rise of the preliminary pressing plate 210, but during that time, a large amount of power is consumed. Need to throw in. For example, when the press machine is used as a laminator, it sometimes takes 20 to 30 minutes as the time required for the main pressing for lamination, and sometimes it takes about 1 hour in the long case. Although a large amount of electric power is consumed during this time, according to the press device 1 according to the first embodiment, the power of such a servo motor (not shown) is turned off while the stopper 310 is pressing. The energy consumption during that period can be omitted altogether.

(4) As a preferable aspect, the holding means 300 of the press device 1 is composed of a stopper 310, and a part of the stopper 310 abuts on a predetermined fixing portion 510 and another part thereof is a spare. It directly contacts the pressing plate 210.
Therefore, it is possible to reliably suppress the movement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2 with a simple configuration.

(5) As a preferred aspect, the stopper 310 of the press device 1 has a discrete change in the thickness of the stopper 310 fitted between the first wall 511 of the fixing portion 510 and the second wall 212 of the preliminary pressing plate 210. The wedge-shaped member 312 has a step-like shape. Since the stopper 310 is configured as described above, the interval between the first wall 511 and the second wall 212 may be appropriately changed stepwise in accordance with changes in specifications such as the thickness of the work W and the compression degree of the elastic packing 130. You can

(6) Further, as a preferred aspect, the preliminary pressing plate 210 also serves as the chamber base 120. For this reason, the number of members can be reduced, and the occupied space corresponding to that can be omitted, so that an economically advantageous press device can be realized.

(7) Further, in the pressing method according to the first embodiment, the preliminary pressing step S30 of compressing and deforming the elastic packing 130 and the pressing means 300 are enabled to restrict the displacement of the preliminary pressing plate 210 in the anti-preliminary pressing direction D2. The pressing means enabling step S40 and the main pressing step S50 of driving the press plate 110 by introducing the pressure fluid FL into the chamber 10 to generate the main pressing force PR2 of the press surface 111 against the work W are provided. It is supposed to be executed in this order.
Therefore, even when a large reaction force is likely to be generated from the work W side during pressing, the pressing means 300 is validated in the pressing means activating step S40. The movement to D2 can be suppressed. As a result, even in the main pressing step S50, a sufficient pressing force PR2 can be generated on the press surface 111 without changing the volume of the chamber 10, that is, without decreasing the fluid pressure in the chamber 10.
As described above, according to the pressing method of the first embodiment, it is possible to generate a sufficient pressing force on the pressing surface even when pressing in a wide area.
Since the pressing method according to the first embodiment can be performed using the pressing device 1 according to the first embodiment, the effects based on the characteristics of the pressing device 1 can be similarly obtained.

[Embodiment 2]
FIG. 4 is a cross-sectional view shown for explaining the press device 2 according to the second embodiment. In the second embodiment, components having the same basic configuration and characteristics as those of the first embodiment are denoted by the same reference numerals as those in the first embodiment or the reference numerals are omitted, and the description of those components is omitted.

The press device 2 according to the second embodiment has basically the same configuration as the press device 1 according to the first embodiment, but the press device according to the first embodiment is that the press head is arranged below the work W. Different from device 1.
That is, as shown in FIG. 4, in the pressing device 2 according to the second embodiment, the preliminary pressing plate 210 and the pressing plate 110 are arranged so as to face each other so as to sandwich the work W, and the press head 100 ′ is arranged so that It is located below. The chamber base 120′ is provided with a fluid introduction port 125. The pressure fluid FL supplied from the pressure fluid source 400 can be introduced into the chamber 10 through the fluid introduction port 125.

According to the press apparatus 2 according to the second embodiment as described above, for example, when a liquid is used as the pressure fluid, even if the liquid leaks from the chamber 10, the press head 100′ having the chamber 10 can remove the work W from the work W. Since it is arranged on the lower side, the work W above the chamber 10' is not polluted.

The press device 2 according to the second embodiment basically has the same structure as the press device 1 according to the first embodiment except that the press head 100 ′ is arranged below the work W. .. Therefore, among the effects possessed by the press device 1 according to the first embodiment, the corresponding effects are similarly exhibited.

[Modification]
Although the present invention has been described based on the above embodiment, the present invention is not limited to the above embodiment. The present invention can be implemented in various modes without departing from the spirit of the invention, and the following modifications are possible, for example.

(1) The numbers, materials, shapes, positions, sizes, etc. of the constituent elements described in the above embodiments are mere examples, and can be changed within a range that does not impair the effects of the present invention.

(2) FIG. 5 is a diagram for explaining the modified example. 5(a) shows a press head 100″ according to the first modification, FIG. 5(b) shows a press head 100′″ according to the second modification, and FIG. 5(c) shows an elastic packing 130′ according to the third modification. Shown respectively.

In each embodiment, the elastic packing 130 was disposed between the inner surface 112 of the flat press plate and the inner surface 122 of the flat chamber base body. However, the present invention is not limited to this. As shown in FIGS. 5A and 5B, a packing groove 114 is formed on the inner surface side of at least one of the press plate 110 ′ and the chamber bases 120, 120 ″ facing each other, and the elastic packing 130 is formed. However, it may be configured to be dropped into the packing groove 114 and engage with the packing groove 114 (Modification 1 and Modification 2).
By thus forming the packing groove 114 and engaging the elastic packing 130 with the packing groove 114, the sealing property of the chamber 10 can be further enhanced.
Also, as will be described later, even when the planar shape of the elastic packing is configured to be an arbitrary different shape other than a substantially square or circular shape and pressed, when the main pressing is performed, the elastic packing is pulled outward by the fluid pressure. The movement of the packing is restricted by the packing groove 114, so that the pressing can be performed while maintaining an arbitrary different shape.

Further, in each of the embodiments, the shape of the elastic packing 130 when viewed in plan is a substantially rectangular shape, but the present invention is not limited to this. For example, it may be circular. Further, an elastic packing 130' having an arbitrary shape that is adapted to the shape of the work W other than the substantially square/circular shape as shown in FIG. 5C may be used (Modification 3).
A uniform fluid pressure is received in the region inside the ring formed by the elastic packings 130 and 130', and the pressing force is evenly generated in the portion corresponding to the region inside the ring shape on the press surface 111 side. it is conceivable that. It is considered that the main pressing force also gradually decreases as it moves away from the ring in the portion corresponding to the outer region of the shape of the ring. Therefore, by appropriately setting the shapes of the elastic packings 130 and 130' according to the shape of the work W to be pressed (see the elastic packing 130' having an arbitrary different shape, etc.) It suffices to introduce a sufficient amount of pressure fluid, and the load on the pressure fluid source 400 is reduced by that amount, and energy can be saved.

(3) FIG. 6 is a diagram for explaining the modified example. FIG. 6A shows a pre-pressing unit 200′ according to Modification 4, FIG. 6B shows a tapered wedge-shaped member 314 as a holding means according to Modification 5, and FIG. The semi-fixed holding jig 316 which is the holding means of FIG.

In each of the embodiments and the modified examples, the stopper 310 serving as the pressing means 300 is in direct contact with the preliminary pressing plate 210 by using, for example, a stepwise wedge-shaped member 312 (FIGS. 1, 3, and 4). reference). However, the present invention is not limited to this.

As shown in FIG. 6A, the post 234 is introduced as the member 230 connected to the preliminary pressing plate, and the stopper 310 is fitted and inserted between the first wall 511 of the fixing portion 510 and the second wall 232 of the post 234. (Modification 4).

In addition, as shown in FIG. 6B, the stopper 310 is formed as a wedge-shaped member 314 having a tapered shape whose thickness continuously changes, and this is formed with the first wall 511 of the fixing portion 510 and the preliminary wall. It may be inserted between the pressing plate 210 (or the member 230 connected to the preliminary pressing plate such as the post 234) and the second wall 212 (232) (Modification 5).
By forming the wedge-shaped member 314 having such a taper shape, the gap between the first wall 511 and the second wall 212, 232 is changed according to the specification change such as the thickness of the work W and the compression degree of the elastic packing 130. Can also be changed arbitrarily and steplessly as appropriate.

Further, as shown in FIG. 6C, a semi-fixed holding jig 316 may be introduced as the stopper 310. For example, the semi-fixed holding jig 316 is composed of a member 317 in which a hollow hole is formed and a bolt screw 318, and a tap (screw hole) is opened in the fixing portion 510'. Then, the bolt 318 may be screwed into the tap of the fixing portion 510 while the bolt screw 318 is passed through the fixing hole, and the member 317 in which the floating hole is formed may be integrated with the fixing portion 510. Then, a part of the member 317 in which the stupid hole is formed is brought into contact with the preliminary pressing plate 210 (or the member 230 connected to the preliminary pressing plate such as the post 234) so that the preliminary pressing plate 210 is directly or It can be held indirectly (Modification 6).

(4) In each of the embodiments and the modified examples, the fluid introduction port 125 is provided in the chamber bases 120, 120', 120". However, the present invention is not limited to this. The fluid inlet 125 may be provided on the press plate 110, 110' side.

(5) In each of the embodiments and the above-described modified examples, an example in which air is used as the pressure fluid FL has been described. However, the present invention is not limited to this. For example, as the pressure fluid FL, another gas (inert gas or the like) or a liquid such as water or oil may be used.

1, 2... Press device, 10, 10'... Chamber, 100, 100', 100''... Press head, 110, 110'... Press plate, 111, 811... Press surface, 112... Inner surface of press plate, 114... Packing groove, 120, 120', 120'... Chamber base, 121... Chamber base outer surface, 122... Chamber base inner surface, 125... Fluid inlet, 130, 130'... Elastic packing, 200, 200'... Pre-pressing unit , 210... Preliminary pressing plate, 212... Second wall, 220... Preliminary pressing force applying mechanism, 230... Member connected to preliminary pressing plate, 232... Second wall, 234... Post, 300... Holding means, 310... Stopper, Reference numeral 312... Step-shaped wedge-shaped member, 314... Tapered wedge-shaped member, 316... Semi-fixed holding jig, 317... Member with stupid hole formed, 318... Bolt screw, 400... Pressure fluid source 490... Tube, 500... Table, 510... Fixing part, 511... First wall, 800... Conventional pressing device, 801... Upper mold, 801a... Body, 802... Piston, 803... Pusher, 804... Pressure transmission medium, 805... Pressure chamber, 806... Through hole, 807... Lower mold, 809... Press upper heating plate, 810... Enclosed space, 815, W, W'... Work piece, 900... Another conventional press device, 901... Mold, 902 ... Molded object, 911... Rigid member, 912... Sealing member, 930... Pressurizing chamber, 932... Pressure receiving stage, 933... Pressurizing chamber housing, 935... Pressurizing means

Claims (8)

A press device for driving a press plate by a fluid pressure in a chamber to press a work,
The "press plate" having a press surface serving as a work contact surface, the "chamber base" arranged to face the press plate, and the press plate and the chamber base having a ring shape when seen in a plan view. A press head including an "elastic packing" disposed between and,
A "preliminary pressing plate" that transmits a preliminary pressing force in a preliminary pressing direction, which is a direction in which the work is arranged, and is arranged on the side opposite to the side where the work is arranged as viewed from the preliminary pressing plate, A preliminary pressing unit including a "preliminary pressing force applying mechanism" for applying the preliminary pressing force to the pressing plate;
Equipped with
The chamber is constituted by a space surrounded by the inner surface of the press plate, the inner surface of the chamber base and the elastic packing, and the chamber is in a state in which the elastic packing is compressed and deformed by the preliminary pressing by the preliminary pressing unit. In, by introducing a pressure fluid from the pressure fluid source into the chamber, the main pressing force to the work on the press surface is generated,
Further comprising a holding means for holding the movement of the preliminary pressing plate in the opposite preliminary pressing direction which is the opposite direction to the preliminary pressing direction,
A press device characterized by the above. In the press device according to claim 1,
A packing groove is formed on the inner surface side of at least one of the press plate and the chamber base body facing each other,
The elastic packing is dropped into the packing groove and is engaged with the packing groove.
A press device characterized by the above. The press device according to claim 1 or 2,
The pressing means is composed of a stopper,
A part of the stopper abuts or is fixed to a predetermined fixing portion, and another part of the stopper abuts directly on the preliminary pressing plate or indirectly via a member connected to the preliminary pressing plate. Is configured as
A press device characterized by the above. The press device according to claim 3,
The stopper is a wedge-shaped member that is fitted between a first wall of the fixing portion and a second wall of the preliminary pressing plate or a member connected to the preliminary pressing plate,
The wedge-shaped member has a stepwise shape in which the thickness discretely changes,
A press device characterized by the above. The press device according to claim 3,
The stopper is a wedge-shaped member that is fitted between a first wall of the fixing portion and a second wall of the preliminary pressing plate or a member connected to the preliminary pressing plate,
The wedge-shaped member has a tapered shape whose thickness continuously changes,
A press device characterized by the above. The press device according to any one of claims 1 to 5,
The press device, wherein the preliminary pressing plate also serves as the chamber base body. The press device according to any one of claims 1 to 5,
The preliminary pressing plate and the pressing plate are arranged to face each other so as to sandwich the work,
The press device, wherein the press head is disposed below the work. A "press plate" having a press surface serving as a work contact surface, a "chamber base" arranged to face the press plate, and a ring shape when seen in a plan view, and the press plate and the chamber base. A press head including an "elastic packing" arranged between
A "preliminary pressing plate" that transmits a preliminary pressing force in a preliminary pressing direction, which is a direction in which the work is arranged, and is arranged on the side opposite to the side where the work is arranged as viewed from the preliminary pressing plate, A preliminary pressing unit including a "preliminary pressing force applying mechanism" for applying the preliminary pressing force to the pressing plate;
A pressing means for pressing the movement of the preliminary pressing plate in the direction opposite to the preliminary pressing direction, which is the opposite direction to the preliminary pressing direction,
A pressing method for pressing a workpiece using a pressing device, wherein the chamber is constituted by a space surrounded by an inner surface of the press plate, an inner surface of the chamber base and the elastic packing,
A preliminary pressing unit advancing step of advancing the preliminary pressing unit in the direction in which the work is arranged;
A pre-pressing step in which the pre-pressing unit is further moved in the direction in which the work is arranged to pre-press the work and directly or indirectly compressively deforms the elastic packing;
A pressing means enabling step of enabling the pressing means while keeping the elastic packing compressed and deformed to restrict the displacement of the preliminary pressing plate in the anti-preliminary pressing direction;
A main pressing step of generating a main pressing force on the work by driving the press plate by introducing a pressure fluid from a pressure fluid source into the chamber,
In this order,
A pressing method characterized by the above.

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