JP5912384B2 - Press machine - Google Patents

Description

  The present invention relates to a press apparatus, and more specifically, to a press apparatus for pressing a workpiece such as plastic, resin, metal, or the like using a mold.

  A press device is a device for sandwiching a workpiece such as plastic or resin between a pair of dies and processing it into a shape similar to the shape of the pair of dies. Used in the manufacture of products in the field.

  As a known press device, for example, in Patent Document 1 given below, a pressing force is applied to a mold between a fixed frame supported by a plurality of support columns and a movable frame that is guided by the same support column and can be moved up and down. A press device is disclosed.

JP 07-276100 A

  Certainly, in the technique described in Patent Document 1, a plurality of pressure actuating bodies are embedded in the movable frame to maintain the uniformity of the pressure applied to the mold. However, in this technique, a single rod is used. Since it has a two-stage configuration in which a plurality of pressure actuating bodies are arranged on a movable frame to be moved, there is a problem that adjustment by the pressure actuating body becomes difficult when the rod is greatly displaced, and is movable. There is a problem that many uncertain factors such as absorption of the applied pressure by the frame and misalignment between the movable frame and the mold occur, and there is still a problem in the uniformity of the applied pressure applied to the mold.

  Then, an object of this invention is to provide the press apparatus with higher uniformity of the pressurization force concerning a metal mold | die.

  A press apparatus according to an aspect of the present invention that solves the above problems includes a support base, a plurality of support bars fixed to the support base, and an upper fixing base fixed to the plurality of support bars at a distance from the support base. And a movable base disposed between the support base and the upper fixed base and movable between the support base and the fixed base while being restrained by the support rod, and a movable side disposed on the upper fixed base side of the movable base A mold compression plate, a fixed-side mold compression plate disposed on the movable table side of the upper fixed table, a main rod connected to the support table side of the movable table, a connection to the support table side of the movable table, and A plurality of sub-rods arranged symmetrically with respect to a connection position of the main rod; and a drive unit for moving the main rod and the plurality of sub-rods up and down.

  As described above, according to the present invention, it is possible to provide a pressing device with higher uniformity of the pressure applied to the mold.

It is a figure which shows the outline of the press apparatus which concerns on embodiment. It is a figure which shows the outline of the fixed side type | mold compression board which concerns on embodiment. It is a figure which shows the outline of the movable side type compression board which concerns on embodiment. It is a figure at the time of seeing a movable stand from the side to which a main rod is connected in an embodiment. It is a figure explaining the guide member which concerns on embodiment. It is a figure which shows the contact of a through-hole when a movable stand deform | transforms. It is a figure explaining the guide member which concerns on embodiment. It is a figure explaining the outline of the movable part concerning an embodiment. It is a figure which shows the outline of the movable part which concerns on embodiment. It is a figure which shows the outline of the installation direction of the shaft member of the movable part which concerns on embodiment.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. However, the present invention can be implemented in many different forms, and is not limited only to the embodiments shown below.

  FIG. 1 is a diagram showing an outline of a press apparatus (hereinafter referred to as “the present apparatus”) 1 according to the present embodiment.

  As shown in the figure, the apparatus 1 includes a support base 2, a plurality of support bars 3 fixed to the support base 2, and an upper fixed position fixed to the support bases 2 at a distance from each other. A movable table 5 disposed between the support table 2 and the support table 2 and the upper fixed table 4 and movable between the support table 2 and the upper fixed table 4 while being restrained by the support rod 3; A movable side compression plate 51 disposed on the upper fixed base side, a fixed side compression plate 41 disposed on the movable base side of the upper fixed base 4, and a main rod 6 connected to the support base side of the movable base A plurality of sub rods 7 connected to the support base side of the movable base 5 and symmetrically arranged with respect to the connection position of the main rod 6, and a drive unit 8 for moving the main rod 6 and the plurality of sub rods 7 up and down; Have

  In the present apparatus 1, the support base 2 is for fixing and supporting the support bar 3, and by fixing the support bar 3, the positions of various components such as the upper fixed base 4 and the movable base 5 can be determined. it can. The material of the support base 2 is not limited as long as it has the above function, but for example, it is preferable to use a metal or an alloy such as iron, and more preferably a high strain such as S40C to S55C that is less likely to cause distortion. It is a strong carbon steel.

  Moreover, in this apparatus 1, the support bar 3 is being fixed to the support stand 2 as above-mentioned, and can fix the above-mentioned upper fixing stand 4. FIG. The number of the support bars 3 is not limited as long as the upper fixing base can be stably fixed, but for example, four is preferable. The fixing of the support bar 3 and the support base 2 is not limited as long as it can be fixed. For example, as shown in FIG. 1, the support base 2 is supported by providing a through hole through which the support bar 3 passes. While the rod 3 is penetrated, a screw groove is formed in the support rod 3, and the screw groove can be fixed firmly by using a pair of nuts 21. In addition, it is preferable that the material of the support bar 3 is a very hard material like the above-mentioned support base, for example, it is preferable to use a metal or an alloy such as iron, and more preferably S40C to High strength carbon steel such as S55C.

  In the present apparatus 1, the upper fixing base 4 is fixed to the support bar 3 at a distance from the support base 2 as described above, and the fixed-side compression plate 41 is disposed on one surface thereof. Further, one of the molds is disposed on the pressing table 41. The material of the upper fixing base 4 is preferably a very hard material as in the case of the support base 2. For example, it is preferable to use a metal or an alloy such as iron, and more preferably S40C ~ High strength carbon steel such as S55C. The fixing of the support bar 3 and the upper fixing base 4 is not limited as long as it can be fixed. For example, a through hole through which the support bar 3 penetrates is provided in the upper fixing base 4 to allow the support bar 3 to pass therethrough. On the other hand, the support rod 3 can be fixed by forming a screw groove and tightening the screw groove firmly using a pair of nuts 21.

  In the apparatus 1, a fixed-side compression plate 41 is disposed on the movable table side of the upper fixed table 4. FIG. 2 is a diagram showing an outline of the fixed side compression plate 41. The fixed-side compression plate 41 is a table for fixing one of the molds, and is fixed to the upper fixed table 4 by screw members such as bolts and nuts. The shape of the fixed side compression plate 41 is not limited, but it is preferable to match the shape of the bottom of a general mold. For example, if the bottom shape of a frequently used mold is a quadrangle, it is a quadrangle. If it is circular, it is preferably circular. Note that a heater 42 for heating the mold is preferably embedded in the fixed side compression plate 41, and the temperature can be easily adjusted by the heater 42. The material of the fixed side compression plate 41 is not limited as long as the mold can be held and the pair of molds can be stably pressurized. For example, a metal such as iron or the like It is preferable to use an alloy, and it is more preferable that the surface is subjected to treatment such as induction hardening.

  In the apparatus 1, the movable table 5 is arranged between the support table 2 and the upper fixed table 4 as described above, and is movable between the support table 2 and the upper fixed table 4 while being restrained by the support bar 3. A movable side compression plate 51 is disposed on the upper fixed base 4 side. And the metal plate etc. which are arrange | positioned in the meantime can be processed by engaging the metal mold | die arrange | positioned at this movable side type | mold compression plate 51, and the metal mold | die arrange | positioned at the fixed side type | mold compression plate 41. FIG. The material of the movable base 5 is not limited as long as the mold can be held and the pair of molds can be stably pressurized. For example, a metal or an alloy such as iron is used. It is more preferable that the material is softer than the support base 2 and the upper fixing base 4, and examples thereof include general structural rolled steel (SS material). In the present apparatus 1, the movable base 5 is made of a material that is softer than the support base 2 and the upper fixed base 4, so that the processing object sandwiched between the molds can be equally applied with pressure as described later. become able to. In addition, although it does not necessarily limit about the hardness of a material, and softness, it can judge using indices, such as Vickers hardness, for example.

  In the present apparatus 1, the movable side compression plate 51 is a table for arranging one of the molds as described above, and is disposed on the upper fixed table side of the movable table 5. An outline of the movable side compression plate 51 is shown in FIG. In the apparatus 1, the movable side compression plate 51 is configured such that an intermediate member 511 and an outer base member 512 that is harder than the intermediate member 511 are sequentially stacked on the movable base. In this way, even when a strong pressure is applied by a sub rod to a part of the movable side compression plate 51 and the movable side compression plate 51 is deformed as described later, The repulsive force for returning to the state can be obtained. The material of the intermediate member 511 is not limited as long as it has the above functions, but is a material that is softer than the movable base 5 and the outer base member 512 and that is stably restored to the original shape. It is preferable. Further, the material of the outer base member 512 is limited as long as it can hold the mold and can stably pressurize the pair of molds, like the material of the fixed side compression plate 41. Although not necessarily used, for example, a metal or an alloy such as iron is preferably used, and more preferably, the surface is subjected to a treatment such as induction hardening. Note that, similarly to the fixed-side compression plate 41, the movable-side compression plate 51 is preferably provided with a heater 513 for adjusting the mold temperature. In this case, the outer base member 512 is more preferably provided with the heater 513. In this embodiment, by providing the intermediate member 511, it can function as a repellent material, and even when the movable base 5 is deformed, it can be quickly and stably returned to the original state.

  In the present apparatus 1, the movable side compression plate 51 is fixed to the movable table 5 by screw members 514 such as bolts and nuts. However, in this embodiment, the screw member 514 is preferably provided in a region surrounded by the plurality of sub rods 7 (a region formed by connecting sub rods (preferably this center) with a straight line). More preferably, it is provided on a straight line connecting the sub rods 7. In FIG. 4, the figure at the time of seeing the movable stand 5 from the side to which the main rod 6 is connected is shown. As will be described later, in this apparatus 1, the movable table 5 and the movable table pressing table 51 may be deformed. Therefore, when the screw member 514 is placed outside the region surrounded by the sub rod 7, the movable side compression plate 51 and the movable table are arranged. 5 will be suppressed. Therefore, it is possible to cope with sufficient deformation by providing in the region surrounded by the plurality of sub rods 7, more preferably on the straight line connecting the main rod 6 and the sub rod 7, and the adjustment of the applied pressure by the sub rod 7 can be further improved. It can be done efficiently.

  Further, in the apparatus 1, the movable table 5 is movable between the support table 2 and the upper fixed table 4 while being restrained by the support bar 3 as described above. Although not limited as long as it has this function, in this embodiment, the movable base 5 is formed with through holes 52 that allow the plurality of support bars 3 to pass therethrough. It penetrates. Further, guide members 53 are arranged corresponding to the respective through holes 52 of the movable table 5. FIG. 5 is a schematic cross-sectional view for explaining the guide member 53.

  In this embodiment, the guide member 53 is used to move the movable table 5 up and down along the support bar 3. Since this apparatus 1 is based on the premise that a part of the movable table is deformed as will be described later, it is used to ensure the accuracy of the position of the movable table 5 even when this deformation occurs. is there. More specifically, if the movable base 5 is to be guided only by the through hole 52, the diameter of the through hole 52 is made substantially the same as the diameter of the support rod 3 in order to ensure the accuracy of the meshing position of the mold. On the other hand, when the movable table 5 is deformed, the direction of the through hole 52 close to the deformed position is also shifted. As a result, the edge portion in the vicinity of the through hole of the movable table 5 comes into contact with the support rod 3, and the movable table 5 stops moving in a severe case (see, for example, FIG. 6). On the other hand, if the through hole 52 is sufficiently larger than the diameter of the support rod, the accuracy of position adjustment with the mold fixed to the upper fixing base 4 will be impaired.

  Therefore, in the present embodiment, this problem is solved by providing the guide member 53 in the vicinity of the through hole 52. As described above, FIG. 5 is a schematic sectional view of the guide member. As shown in this figure, the guide member 53 includes a hollow annular member 531, a repulsive member 532 for generating a repulsive force between the hollow annular member 531 and the movable base 5, and the hollow annular member 531 and the movable base 5. And a hooking member 533 for limiting the distance. In this case, it is preferable that the repulsion member 531 and the hooking member 533 are configured as a set, and a plurality of the sets are arranged.

  In the present embodiment, the hollow annular member 531 is a member having a hollow annular portion that is approximately the same as the diameter of the support rod 3 (preferably 0.01 mm or more and 0.1 mm or less) to the extent that the support rod 3 penetrates. The support rod 3 passes through the hollow annular portion. In this case, the diameter of the through hole 52 of the movable base 5 is formed to be relatively larger than the diameter of the support bar 3 (from 3 mm to 10 mm). FIG. 7 is a schematic perspective view of the hollow annular member 531.

  In the present embodiment, the repelling member 532 is a member for generating a repulsive force between the hollow annular member 531 and the movable base 5 as described above. Although it is not necessarily limited as long as it has this effect, it is preferably a spring, more preferably a coiled spring in which the hooking member 533 can be disposed. A plurality of repulsion members 532 are evenly arranged around the hollow annular portion of the hollow annular member 531.

  In the present embodiment, the hook member 533 has a distance between the hollow annular member 531 and the movable base 5 in order to prevent the movable base 5 and the hollow annular member 531 from being separated by a repulsive force generated by the repulsive member 532. It is a member for limiting. Although the hook member 533 is not limited as long as it has this function, it is a preferable example that it is comprised with a volt | bolt and a nut. In this case, a through hole is provided in each of the movable base 5 and the hollow annular member 531, a bolt head or a nut is disposed on the opposite side of the movable annular base 5 to the hollow annular member 531, and the movable annular base 531 is opposite to the movable base 5. This can be realized by arranging a bolt head or nut on the side. Note that a plurality of hooking members 533 are preferably provided corresponding to the repulsion members 532.

  As a result, the guide member 53 can reliably slide the movable table 5 even if the movable table 5 is deformed. Specifically, referring to FIGS. 5 and 8, first, in the normal state, the hollow annular member 531 is applied with a repulsive force by the repelling member 532, while its distance is limited by the hooking member 533. This relationship is the same for all repulsion members 532 and hook members 533 in pairs (FIG. 5). However, when the movable table 5 is partially deformed, when the direction of the through hole 52 of the movable table 5 is changed, in one set of the repelling member 532 and the hooking member 533, the repelling member 532 is compressed and the hollow annular member is compressed. The distance between 531 and the movable base 5 is reduced, and the hooking member 533 is released. As a result, the hollow annular member 531 can always align the hollow annular portion with the axial direction of the support rod 3, and can reliably slide the movable base 5 up and down (FIG. 8). In this case, it is preferable that the through hole 52 of the movable base 5 be large enough not to come into contact with the support rod even in this deformation.

  In the present apparatus 1, a rod-like main rod 6 is connected to the movable table 5 on the side of the support table 2. The main rod 6 is connected to the drive unit 8, and the movable table 5 can be moved between the support table 2 and the upper fixed table 4 by the operation of the drive unit 8. The connection position of the main rod 6 is not limited, but is preferably on the support 2 side of the movable table 5 and near the center of the movable-side compression plate 51 (see, for example, FIG. 4). . This is to press the object to be processed on the movable side compression plate 51 so that force can be applied as uniformly as possible from the initial state. Specifically, it is preferable that if the mold is a quadrangle, it is the intersection of the straight line connecting the opposing vertices and its vicinity, and if it is a circle, the center point and its vicinity.

  In the apparatus 1, a plurality of rod-like sub rods 7 are connected to the movable table 5 on the support table 2 side. In the apparatus 1, the sub rod 7 assists the pressing force of the main rod 8, and is connected to the drive unit 8. Like the main rod, the sub rod 7 moves the movable table 5 and the support table 2 by the operation of the drive unit 8. It is possible to move between the fixed bases 4.

  In the present apparatus 1, the plurality of sub rods 7 are arranged symmetrically around the position where the main rod 6 is connected. By arranging the main rod 6 symmetrically about the center, it becomes possible to easily maintain the uniformity of the pressure applied to the object to be processed around the main rod 6 (see, for example, FIG. 4). The sub rod 7 is preferably arranged and connected in the region of the movable side compression plate 51 arranged on the opposite side of the movable table 5. By doing in this way, a pressurizing force can be reliably applied to a metal mold | die.

  In the present apparatus 1, the number of sub-rods 7 is not limited, but it is necessary that there are at least two or more, and preferably four as shown in the present embodiment. By using four, the movable-side compression plate 51 has a quadrangular shape that matches a general mold shape, and is placed near the apex inside the quadrangular shape, so that the pressurizing force that the mold applies to the pressurization target Can improve the uniformity.

  Further, in the present apparatus 1, the sub rod 7 has a movable portion 54 between the movable rod 5 and the sub rod 7 is connected to the movable bench 5 through the movable portion 54. FIG. 9 is a diagram showing an outline of the movable portion 54.

  In the apparatus 1, the movable portion 54 is not limited, but can adjust the connection angle between the moving direction of the sub rod 7 (the axial direction of the sub rod) and the movable base 5. A specific example will be described. The movable portion 54 according to the present embodiment includes a receiving member 541 fixed to the movable base 5 side and a receiving member 542 formed on the sub rod 7 side, as shown in the figure. And a shaft member 543 that passes through the pair of receiving members 542 and is rotatably connected. By doing so, the sub rod 7 and the movable base 5 can be rotated by a desired angle with the shaft member 543 as the axis center. In this apparatus 1, in this way, for example, when one sub rod 7 is independently driven to strongly press a part of the movable table 5, the movable table 5 is partially deformed by this pressing. However, by arranging the movable portion 54, even if this deformation occurs, the possibility of changing the moving direction of the sub rod 7 is extremely reduced, and stable vertical sliding is possible. In this case, it is preferable that the straight line connecting the main rod 6 and the sub rod 7 and the shaft member 543 are substantially perpendicular. This is because the main rod 6 is deformed by driving the sub rod 7 independently, so that the deformation can be efficiently handled. FIG. 10 shows the relationship between the shaft member 543 and the cylinder. Here, “substantially vertical” includes a complete vertical, but is a concept including an error of about 5 degrees at 90 degrees, and specifically, a range of 85 degrees to 95 degrees.

  In the present apparatus 1, the main rod 6 and the sub rod 7 are connected to the drive unit 8 as described above. As is apparent from the above description, the drive unit 8 can move the main rod 6 and the sub rod 7 up and down independently. The driving of the sub rod 7 needs to be independent of the driving of the main rod 6. However, the plurality of sub rods 7 may all have the same driving operation, but in order to further increase the uniformity of the pressure applied to the workpiece. It is preferable that each of the plurality of sub rods is driven separately. The configuration of the drive unit 8 is not limited as long as it has the above functions, but is configured by a hydraulic pump and a hydraulic cylinder connected to the hydraulic pump, and combined with the main rod 6 or the sub rod 7, The main rod 6 or the sub rod 7 is preferably slidable by driving. In this case, the main rod 6 and the sub rod 7 are provided with separate hydraulic pumps and hydraulic cylinders. Of course, when a plurality of sub rods 7 are driven independently, it is preferable that a separate hydraulic pump and hydraulic cylinder are attached to each sub rod 7. The drive unit 8 may be constituted by an electric cylinder using an electric motor or the like in addition to the hydraulic pump, and it is preferable that each of the main rod 6 and the sub rod 7 can be driven independently.

  Further, the device 1 needs to be provided with a pressure detecting device 91 for monitoring the applied pressure, and is not limited as long as it has this function, but is preferably a load cell, In this case, it is preferable to arrange between the main rod 6, the sub rod 7 and the movable table 4. By doing so, the pressure applied to each cylinder can be detected, and the uniformity of the applied pressure can be improved. In addition, as the arrangement of the pressure detecting device 91, for example, it is preferable that the pressure detecting device 91 is provided between the mold and the fixed side compression plate or between the fixed side compression plate and the upper fixed base.

  In addition, the apparatus 1 preferably includes a control unit 9 for controlling the drive unit 8. By having the control unit 10, the driving of the main rod 6 and the plurality of cylinders 8 can be adjusted based on the result of the pressure detecting device 91, and the workpiece can be accurately and easily pressurized. .

  Here, the press method using this apparatus 1 is demonstrated. First, the user installs one of the molds on the fixed side compression plate 41 of the fixed base 4 and the other mold on the movable side compression plate 51 of the movable base 5, and the material to be processed between them. Deploy. Here, the object to be processed is not particularly limited as long as it can be molded by pressing, and for example, resin, plastic, metal, and the like can be targeted.

  Next, the drive unit 8 is driven, the main rod 6 and the plurality of sub rods 7 are raised, and the fixed base 4 is slid along the support bar 3 so that the distance between the fixed base 4 and the movable base 5 is reduced. Start pressing.

  After the press is started, the user measures and observes the pressure applied to the mold by the pressure detecting device 91, and confirms whether the pressure is uniformly applied to the entire mold. For example, when there is a weak pressure part, the sub rod 7 in charge of this part is independently driven by the drive unit 8 and pressurized. As a result, it is possible to apply pressure uniformly over the entire mold. At this time, as described above with respect to the guide member 53, since the guide member 53 is used, even if one sub rod 7 is driven independently, the sliding of the movable base 5 is not hindered.

As a result, a press apparatus with higher uniformity of the pressure applied to the mold is obtained. In the present embodiment, it is described that the uniformity of the pressure applied to the mold can be achieved. Conversely, the non-uniformity of the region can be arbitrarily realized in the pressure related to the mold. That is, by using this device,
Even if there is a case where it is desired to apply a strong pressure only to a partial region of the mold, application is possible.

  The present invention has industrial applicability as a press device.

DESCRIPTION OF SYMBOLS 1 ... Press apparatus, 2 ... Support stand, 3 ... Support rod, 4 ... Upper fixed stand, 5 ... Movable stand, 6 ... Main rod, 7 ... Sub rod

Claims (4)

A support base;
A plurality of support bars fixed to the support table;
An upper fixed base fixed to the plurality of support bars at a distance from the support base;
A through-hole is formed between the support base and the upper fixing base and penetrates the support bar. The support bar passes through the through-hole and is restrained by the support bar while being fixed to the support base. A movable table movable between the tables,
A movable side compression plate disposed on the upper fixed base side of the movable base;
A fixed-side compression plate disposed on the movable table side of the upper fixed table;
A main rod connected to the support base side of the movable base;
Four sub rods connected to the support base side of the movable base and arranged symmetrically around the connection position of the main rod;
A drive unit for moving the main rod and the four sub rods up and down;
A screw member disposed in a region surrounded by the four sub rods and fixing the movable side compression plate and the movable base;
A hollow annular member through which the support rod penetrates; a repulsive member that generates a repulsive force between the hollow annular member and the movable base; and a hook member that limits a distance between the hollow annular member and the movable base. And a guide device.   The press apparatus according to claim 1, wherein the sub rod has a movable portion.   The press apparatus according to claim 1, wherein the movable side compression plate is formed by laminating an intermediate member and an outer base member harder than the intermediate member on the movable base.   The press device according to claim 1, wherein a diameter of the through hole of the movable plate is larger than a hollow diameter of the hollow annular member of the guide member.