JP5446714B2 - Press machine - Google Patents

Description

  The present invention relates to a press apparatus for pressing a workpiece, and more particularly to a press apparatus suitable for various types of press processing of large panel materials and long pipes.

  Conventionally, as a press device for processing this type of panel material or long pipe, a large press device called “C type” or “gate type” is widely used depending on the shape of the frame (for example, patents) References 1 and 2). In order to press the upper mold from above with respect to the lower mold on the base side, these press devices are provided with driving means for pressing the upper mold at a position above the base, such as a hydraulic cylinder. A robust support arm that supports the hydraulic cylinder is erected on the base. The space for adjusting the posture of the workpiece or performing other operations is restricted by the presence of this support arm, and when large sheet metal processing or long pipe pressing is performed, this large space can be secured. It was necessary to use a press machine.

  When the press device is enlarged, it is expensive and has a disadvantage in terms of cost, and a large installation space is required, which is not efficient. Even if space can be secured, there is a limit to improvement in workability because there is a support arm.For example, when the press work is automated / roboted, the support arm becomes a hindrance and design freedom is reduced. It will decline.

JP-A-8-197291 JP-A-9-76099

  Therefore, in view of the above-described situation, the present invention intends to solve the problem that even if the workpiece is large, a space for adjusting the posture can be secured sufficiently, and the press apparatus can be downsized and reduced in cost and installed. It can contribute to space efficiency, has sufficient processing capability, has a high degree of design freedom when automating and robotizing press processing, and is suitable for various press processing of large panel materials and long pipes. The point is to provide a pressing device.

In order to solve the above-mentioned problems, the present invention enables one or both of the left and right molds facing in the horizontal direction and the mold holding member holding each mold to be slid in the horizontal direction on the upper part of the base frame. A slide guide for holding is provided, and the outer surface of the mold holding member is formed as an upward tapered surface outwardly extending downward, and has a downward tapered surface substantially parallel to the upward tapered surface. A pressing member that presses the side surface directly or through a sliding member and presses the mold and the mold holding member inward in the lateral direction along the slide guide portion is provided, and the mold holding member is formed by a longitudinally long member. In order to provide a press-molding mold as the mold on one end side thereof, and at the same time the press-molding mold is crimped to the other end side, to press and press the pressing member to balance. Set a pair of dummy molds The driving means for pulling the pressing member downwardly through the coupling member, provided at a position lower than the mold of the base frame, work space there is no support arm above the mold is opened The press device is characterized in that it is characterized in that (Claim 1).

  Here, the slide guide portion that is slidably held is positioned on the upper surface side of the mold holding member and a support plate that slidably supports the mold holding member placed on the mold holding member. It is preferable to use a restriction plate that prevents the mold holding member from being lifted.

  Further, the sliding member is formed of a flat plate having parallel inner and outer surfaces that are in contact with the outer side surface of the mold holding member and the downward taper surface of the pressing member, respectively, and the sliding is performed when the pressing member presses. It is preferable that the outer surface of the member and the downward tapered surface of the pressing member slide to move inward in the lateral direction together with the mold holding member.

  Furthermore, it is preferable that the drive means is formed by attaching a hydraulic or pneumatic cylinder that pushes down the connecting member to the inside of the base frame.

  Further, when the pressing member is pressed, the mold and the mold holding member are elastically deformed when moved inward in the lateral direction, and when the pressing force is released, the mold and the mold holding member are moved outward by an elastic restoring force. What provided the elastic member which tries to return to an open position is preferable (Claim 5).

According to the press device of the first aspect, the pressing member having the downward tapered surface substantially parallel to the upward tapered surface of the mold holding member generates a strong pressing force due to the wedge effect, and exhibits a sufficient processing capability even in a small size. In addition, since the driving means for operating the pressing member is provided at a position below the mold of the base frame, the support arm necessary for the conventional press device does not exist above the mold, and the workpiece is processed. A work space for adjusting the posture of the material is open. For this reason, for example, when pressing large panel materials and long pipes, it is not necessary to increase the size of the pressing device, and processing can be performed with a small device, contributing to cost reduction and efficient installation space. it can. In addition, since an open space without a support arm or the like is secured as a work space above the mold in this way, the degree of freedom in design is high when automating and robotizing press work. In addition, since the press molding die is provided at the end and the dummy die is attached to a symmetrical position on the opposite side of the press molding die, the structure is balanced, so that the operation is facilitated.

  According to the press device of the second aspect, the slide guide portion is positioned on the upper surface side of the mold holding member and the support plate that is slidably supported with the mold holding member placed on the mold holding member. Because it is a restriction plate that prevents the mold holding member from lifting up, it can handle large pressing forces without causing an increase in the size of the device with a simple structure, and the mold and the mold holding member can be reliably and efficiently slidably guided. Therefore, the maintenance cost can be reduced and the maintenance cost can be reduced.

  According to the press device according to claim 3, the sliding member is formed of a flat plate having parallel inner and outer surfaces that are in contact with the outer side surface of the mold holding member and the downward tapered surface of the pressing member, respectively. When pressing, the outer surface of the sliding member and the downward tapered surface of the pressing member slide to move inward in the lateral direction together with the mold holding member, so that the mold has a structure for holding the mold. Maintenance of the mold holding member is eliminated by simply replacing the sliding member having a simple structure as a consumable, and the clearance between the molds can be easily adjusted by changing the thickness of the sliding member.

  According to the press device of the fourth aspect, a hydraulic or pneumatic cylinder that pushes down the connecting member as a driving means is attached to the inside of the base frame, so that the conventional support arm can be omitted. In addition, the entire apparatus can be reduced in size, and the installation space can be made more efficient.

  According to the press device according to claim 5, when the pressing member is pressed, the mold and the mold holding member are elastically deformed when moved inward in the lateral direction, and when the pressing force is released, the mold and the mold are held. Since the elastic member for returning the member to the position opened to the outside by the elastic restoring force is provided, the opening of the mold after pressing can be speeded up and efficient pressing can be performed.

The perspective view of the principal part which shows the upper part structure of the press apparatus which concerns on this invention. The side view which similarly shows the whole structure of a press apparatus. Similarly side view. Explanatory drawing which shows the metal mold | die and mold holding | maintenance member which are slid-guided.

  Next, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

  As shown in FIGS. 1 and 2, the press device 1 of the present invention includes a left and right mold 2 facing in the lateral direction and a mold holding member 3 that holds each mold 2 on an upper portion 10 a of a base frame 10. In addition, a slide guide portion 4 that holds the mold 2 and the mold holding member 3 so as to be slidable in the lateral direction is similarly attached to the upper portion 10a and the upper surface 11 of the base frame 10.

  The mold holding member 3 is a longitudinally long member. As shown in FIG. 4A, when the mold 2 for press molding is provided on one end side and the mold 2 is crimped on the other end side. A pair of dummy molds 9 are provided for simultaneously pressing and balancing the pressure applied by the pressing member 5. As shown in FIG. 4B, it is a basic usage method in a balanced manner that the molds 2 and 2 are used at the center position of the mold holding member 3. It becomes easy to work by providing the press-molding molds 2 and 2 at the end. In this way, when used while being shifted from the center position, it is necessary to balance the dummy mold 9 by attaching it to a symmetrical position opposite to the mold 2 with respect to the center position.

  In this example, the mold 2 having a short width in the vertical direction is attached to a part of the vertically long mold holding member 3, but the mold 2 having a longer width in the vertical direction is used. About a shape and a dimension, it can set suitably according to a workpiece and a press work form. In this example, only the pair of molds 2 and 2 are provided on the opposite mold holding members 3 and 3, but it is of course possible to provide two or more pairs. Various metal materials widely used in conventional press apparatuses can be applied to the base frame, the mold, and the mold holding member.

  The slide guide portion 4 includes a support plate 40 that supports the mold holding member 3 so as to be slidable, and is positioned on the upper surface 31 side of the mold holding member 3 to lift the mold holding member 3. And a restricting plate 41 for preventing the above. In the upper part 10a of the base frame 10, the space between the molds 2 and 2 is opened in the longitudinal and longitudinal directions so that the central part where the mold 2 and the mold holding member 3 are provided can easily operate the workpiece. A wall portion 12 having a substantially U-shape in plan view is formed on the left and right sides so as to surround the pressing member 5 and the connecting member 81 located outside thereof.

  The support plate 40 is fixed to a position including a range in which the left and right mold holding members 3 move on the upper surface 11 of the central portion opened front and rear. The restricting plate 41 is fixed to the upper end surface 12a on the inner side of the front and rear walls of the substantially U-shaped wall portion 12 and protrudes inward from the upper surface 12a to abut or approach the upper surface 31 of the mold holding member 3. It is comprised from the board | plate material of the planar view substantially L-shape. In addition, the slide guide part 4 is not limited to such a structure at all, Of course, other structures may be sufficient.

  The outer side surface 30 of the mold holding member 3 is an upward tapered surface that spreads outward toward the lower side. Then, on the outer side of the mold holding member 3, the inner side surface 50 has a downward tapered surface substantially parallel to the outer surface 30 of the mold holding member 3, and the outer surface 30 of the mold holding member 3. A pressing member 5 is provided to press the mold 2 and the mold holding member 3 inward in the lateral direction along the slide guide portion 4 by pressing down directly or via the sliding member 6.

  The inner surface 50 of the pressing member 5 is provided substantially opposite to the front surface of the outer surface 30 of the mold holding member 3 and applies pressure to the entire outer surface 30 directly or through the sliding member 6. be able to. That is, the pressing member 5 is a vertically long member having a substantially wedge-shaped cross section. When the pressing member 5 is pressed downward by the driving means 7, the mold 2 and the mold holding member 3 are moved inwardly through the inner surface 50 of the downward taper. The pressing force at that time is amplified by the wedge effect, and a strong force acts on the mold 2 and the mold holding member 3 even with a relatively small driving force.

  In this example, the sliding member 6 is interposed between the outer side surface 30 of the mold holding member 3 and the inner side surface 50 of the pressing member 5, and the pressing force from the pressing member 5 is held by the pressing member 5 through the sliding member 6. It is transmitted to the member 3. The sliding member 6 is formed of a flat plate having parallel inner and outer surfaces that are in contact with the outer surface 30 of the mold holding member 3 and the inner surface 50 of the downward taper of the pressing member 5, and is pressed by the pressing member 5. The outer surface of the sliding member 6 and the inner surface 50 of the pressing member 5 slide to move inward in the lateral direction together with the mold holding member 3. FIG. 2 shows a state before pressing by the pressing member 5, and FIG. 3 shows a state at the time of pressing, and shows how the mold 2 operates by the sliding.

  By interposing the sliding member 6 as in this example, it is only necessary to replace the sliding member 6 as a consumable, and the mold holding member 3 can be used over a long period of time. Therefore, the sliding member 6 is made of a material softer than the sliding pressing member 5, and various metal materials conventionally used as a sliding member of a press apparatus can be used. In this example, the sliding member 6 and the mold holding member 3 operate integrally without sliding with each other, but may slide with the mold holding member 3. In this case, similarly to the relationship with the pressing member 5, the mold holding member 3 is a harder material. Of course, such a sliding member 6 may be omitted, and the pressing member 5 and the mold holding member 3 may be directly slid.

  As shown in FIGS. 2 and 3, driving means 7 is provided at a position below the mold 2 of the base frame 10 to pull down the pressing member 5 via the connecting member 8. In this example, a cylinder 70 of hydraulic pressure or air pressure that pushes down the connecting member 8 downward as the driving means 7 is attached to the inside of the base frame 10. More specifically, a fixing plate 80 is provided to fix the cylinder 70 in the base frame 10 and fix the left and right connecting members 8 at the tip of the cylinder rod 71 extending downward, and the left and right connecting members 8, 8. Is pushed down with the same force in a balanced manner. The drive means 7 can employ various means used in conventional press devices, and of course, a mechanical press drive means using a crank or the like in addition to the cylinder can be employed.

  Between the mold holding member 3 and the base frame 10, when the pressing member 5 is pressed, the mold 2 and the mold holding member 3 are elastically deformed when moved inward in the lateral direction, and the pressing force is released. A coil spring 13 is provided as an elastic member for returning the mold 2 and the mold holding member 3 to the position opened outward by an elastic restoring force. Specifically, as shown in FIGS. 1 to 3, a support base 14 having a size that does not interfere with the mold 2 is provided at the center of the upper surface of the base frame 10, and the support base 14 and the inner surface of the mold holding member 3 are provided. A coil spring 13 is attached to the lower part of the coil. In addition, a leaf spring, a rubber material, and other elastic members may be provided. Further, the elastic member may be omitted, and the structure may be such that the mold is opened by the driving means.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to such an Example at all. For example, in the above embodiment, both the left and right molds 2 and the mold holding member 3 are configured to be slidable inward with respect to the base frame 10, and the pressing member 5 is configured to press both inwardly. However, the present invention is not limited to this, and the left and right molds 2 and the mold holding member 3 are fixed to the base frame 10 and the other mold 2 and the mold holding member are fixed. A configuration is also possible in which only 3 is configured to be slidable, and only the mold holding member 3 configured to be slidable is pressed by the pressing member 5. In this case, only one of the connecting members 8 pulls down the pressing member 5 provided only on the left or right side. In addition, it is needless to say that various forms can be implemented without departing from the scope of the present invention.

DESCRIPTION OF SYMBOLS 1 Press apparatus 2 Metal mold | die 3 Mold holding member 4 Slide guide part 5 Pressing member 6 Sliding member 7 Driving means 8 Connecting member 9 Dummy mold 10 Base frame 10a Upper part 11 Upper surface 12 Wall part 12a Upper surface 13 Coil spring 14 Support Table 30 Outer surface 31 Upper surface 40 Support plate 41 Restriction plate 50 Inner surface 70 Cylinder 71 Cylinder rod 80 Fixing plate 81 Connecting member

Claims (5)

Provided on the upper part of the base frame is a slide guide part that holds one or both of the left and right molds facing each other and the mold holding member that holds each mold in a laterally slidable manner,
The outer side surface of the mold holding member that is slidably held is an upward tapered surface that spreads outward toward the lower side,
Having a downward tapered surface substantially parallel to the upward tapered surface, the outer surface of the mold holding member is pushed down directly or through a sliding member, and the mold and the mold holding member are moved along the slide guide portion. Provide a pressing member to press inward in the lateral direction,
The mold holding member is composed of a longitudinally long member, and a press molding mold is provided as the mold on one end side thereof, and the press molding mold is crimped to the other end side simultaneously with the press molding. A pair of dummy dies are provided to balance the pressure applied by the pressing member,
Drive means for pulling down the pressing member via the connecting member is provided at a position below the mold of the base frame ,
A press apparatus characterized in that no support arm is present above the mold and the work space is open .   The slide guide portion is a support plate that slidably supports the mold holding member placed thereon, and a restriction that is located on the upper surface side of the mold holding member and prevents the mold holding member from lifting up. The press apparatus according to claim 1, comprising a plate.   The sliding member is formed of a flat plate having parallel inner and outer surfaces that are in contact with the outer side surface of the mold holding member and the downward taper surface of the pressing member, and when the pressing member is pressed, The press apparatus according to claim 1 or 2, wherein an outer surface and a downward taper surface of the pressing member slide to move inward in the lateral direction together with the mold holding member.   The press apparatus according to any one of claims 1 to 3, wherein the driving means is configured to attach a hydraulic or air pressure cylinder that pushes down the connecting member downward in a base frame.   When the pressing member is pressed, the mold and the mold holding member are elastically deformed when moved inward in the lateral direction, and when the pressing force is released, the mold and the mold holding member are opened outward by an elastic restoring force. The press apparatus according to any one of claims 1 to 4, wherein an elastic member is provided to return the position.

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