JP5961491B2 - Press machine - Google Patents

Description

  The present invention relates to a press apparatus in which a ram is supported on a tube of a double rod cylinder.

  As seen in Patent Document 1 or Patent Document 2, the press device in which the ram is supported on the tube of both rod cylinders supports the crown by the double rod cylinder instead of the post. Both rod cylinders fix the position of the lower rod protruding downward from the tube with respect to the bed, connect the upper rod protruding upward from the tube to the crown, and restrain the positional relationship with each other. In this way, the crown only needs to restrain the positional relationship between the rod cylinders, so that the crown can be reduced in size as compared with the conventional press device. Thus, the press device in which the rams are supported on the tubes of both rod cylinders can reduce the overall height by reducing the size of the crown (Patent Documents 1 and 0033, and Patent Documents 2 and 0021).

  The press apparatus disclosed in Patent Document 1 or Patent Document 2 that can be reduced because problems such as being disassembled frequently during transportation and being unable to be installed in a factory with a low roof have occurred. Is preferred. In addition, the press device disclosed in Patent Document 1 has a configuration in which a press die is attached to the lower surface of the ram in two steps, taking advantage of the downsizing. In addition, the press device disclosed in Patent Document 2 assigns a press die to each of the upper surface and the lower surface of the ram, and applies the press die in two stages by utilizing the fact that the ram applies equal pressing pressure to each of the upper and lower sides. It has a configuration.

Japanese Patent Laid-Open No. 10-071493 JP 2012-020304 A

  The press device in which the rams are supported on the tubes of both rod cylinders has a reduced overall height by reducing the size of the crown. However, for example, the upper die of the press die is attached to the lower surface of the ram, the lower die of the press die is fixed to the bed, and the press die is inevitably necessary because of the pressing work in which the upper die is moved toward and away from the lower die. It is necessary to secure a lifting distance in which the upper mold approaches and separates from the installation height and the lower mold, and there is a limit to lowering the press device only by downsizing the crown. This still caused the following problems.

  As mentioned above, even with a press device in which the ram is supported by the tube of both rod cylinders, the overall height is still insufficiently controlled. Was necessary. Such sideways and pulling during shipping, transportation, and installation required labor and cost, which was a problem. The press device is rarely moved once installed, but if there is a factory relocation, for example, the problem of soaring labor and cost for shipping, transportation and installation reappears.

  Thus, the demand for lowering the overall height of the press device is still strong even now that a press device in which a ram is supported on the tube of both rod cylinders is provided. Therefore, in order to reduce the overall height of the press device for the purpose of reducing labor and cost for shipping, transporting and installing the press device, Patent Document 1 or Patent Document 2 having a lower overall height than the conventional press device In order to improve the disclosed press device, that is, the press device in which the ram is supported on the tube of both rod cylinders, an investigation was made.

  As a result of the study, we developed a press device in which the upper rod is connected to the crown and the lower rod is fixed in position relative to the bed. Provided on the bed with a tube receiving part, a tube abutting part that is vertically separated from the top, a fixing part at the time of use, and a fixing part at the time of transportation, and the through hole of the tube abutting part was penetrated during pressing work The lower rod of both rod cylinders is detachably fixed to the fixed part when in use, and the lower end of the tube of both rod cylinders is brought into contact with the tube abutting part during transportation work. The press device is characterized in that the lower rods of both rod cylinders through which the through-holes are inserted are detachably fixed to the fixing part during transportation.

  The press device of the present invention removably fixes the lower rod to either the in-use fixing portion or the carrying-in fixing portion of the rod receiving portion provided on the bed, that is, the lower rod cannot be moved up and down. . The lower rod is indirectly fixed to the bed via the rod receiving portion. Further, the position of the lower rod can be appropriately fixed by selecting from a fixing portion during use or a fixing portion during transportation having different heights. The pressing device of the present invention is provided at a position where the fixing portion at the time of transportation is lower than the fixing portion at the time of use. The lower rod can be re-fixed to the fixing portion during transportation, and the crown can be lowered by the difference in height between the fixing portion during use and the fixing portion during transportation.

  The rod receiving part is provided with through-holes communicating with each other in the vertical direction, and has a plurality of in-use fixing parts arranged in order from the top apart from the top and bottom. When the upper rod is used, the lower rod of both rod cylinders that have passed through the through hole of the fixed part is detachably fixed to the selected use fixing part. The height of the crown can be adjusted according to the height of the part. The intervals between the plurality of fixing portions in use may be either equal intervals or unequal intervals. In addition, when the height of the fixing portion in use is adjustable, the height of the crown can be adjusted more finely according to the adjustment of the height of the fixing portion in use.

  The rod receiving part passes the lower rod of both rod cylinders through the through hole provided in the fixing part at the time of use, and sandwiches the fixing part at the time of use with a pair of upper and lower restraints detachably attached to the lower rod, The lower rod may be fixed to the fixing portion during use. The lower rod is fixed to the in-use fixing portion so that the lower rod does not move up and down by sandwiching the in-use fixing portion with a pair of upper and lower restraints attached. The configuration of the restraining tool is not limited as long as the restraining tool can be detachably attached to the lower rod and is not displaced. The lower rod generally has a configuration in which a male screw is formed on the rod end that is reduced in diameter from the rod main body that protrudes and protrudes from the tube, and the upper restraint is a step formed on the tip of the lower rod. The annular member and the lower restraining tool that are engaged with each other from below can be configured as a female screw member that is screwed into a male screw formed below the step of the lower rod.

  Furthermore, the rod receiving portion is between the upper restraining tool mounted on the lower rod of both rod cylinders and the tube contact portion or the fixing portion in use, which is higher than the fixing portion in use where the position of the lower rod is fixed, It is preferable that the spacer is detachably interposed. Thus, the lower rod can be fixed in position stably without rattling with respect to the rod receiving portion by filling the space between the upper restraining tool and the upper tube contact portion or the fixing portion in use with the spacer. The spacer may be configured as a single unit, but in addition to the spacer that fills most of the space between the upper restraining tool and the upper tube contact portion or the fixing portion when in use, a large number that fills the gap between the space and the spacer. It is preferable to use a shim that is a thin plate.

  Also, the rod receiving part allows the lower rods of both rod cylinders to pass through the through holes provided in the tube abutting part and the fixed part during transportation, the lower end of the tube abuts on the tube abutting part, and is attached to and detached from the lower rod. It is good to fix the position of the said lower rod to the fixing part at the time of conveyance by engaging the restraint tool mounted | worn freely from the fixing part at the time of conveyance. The lower rod is fixed in position to the fixed part during transportation so that the lower end of the tube is brought into contact with the tube contact part and the attached restraint is engaged with the fixed part during transportation from below. Is done. In particular, by bringing the lower end of the tube into contact with the tube contact portion, both rod cylinders as a whole are stably positioned relative to the rod receiving portion. As described above, using the general configuration of the lower rod, the restraint is an annular member that is engaged with a step formed at the tip of the lower rod from below, or a male screw formed below the step of the lower rod. It can comprise as a female screw member screwed to.

  And it is preferable that the rod receiving part detachably interposes a spacer between a restraining tool attached to the lower rods of both rod cylinders and a fixing part at the time of transportation where the position of the lower rod is fixed. Thereby, the position of the lower rod can be stably fixed without rattling with respect to the rod receiving portion when the spacer fills the space between the restraining tool and the fixing portion during transportation. The spacer may be configured as a single unit, but in addition to the spacer that fills most of the space between the restraining tool and the fixing portion during transportation, a shim that is a large number of thin plates that fill the gap between the space and the spacer is used in combination. Configuration is good.

  Specifically, the rod receiving portion is a tube abutting portion that is the uppermost layer of a plurality of horizontal surfaces spanned between a pair of vertical surfaces, the lowermost portion of the horizontal surface is a fixing portion during transportation, and the remainder of the horizontal surface is a fixing portion when in use The configuration can be exemplified. The vertical plane and the horizontal plane are configured by a frame body or a plate body. The horizontal surface that becomes the tube contact portion, the fixing portion during use, or the fixing portion during transportation is supported at both ends by a pair of vertical surfaces, and stably supports the lower rod. When the rod receiving portion has a box structure with a horizontal plane laid over four vertical surfaces, the overall rigidity is improved and the lower rod is more stably fixed. If at least one of the four vertical surfaces is made detachable, the operation of fixing the position of the lower rod to the horizontal surface serving as the fixing portion during use or the fixing portion during transportation becomes easy.

  The press device of the present invention obtains an effect of reducing labor and cost in carrying work by lowering the height of the crown in carrying work compared to the pressing work. This is an effect that the position of the lower rod can be fixed by selecting from the fixing portion during use and the fixing portion during transportation of the rod receiving portion. Since the conventional press machine has a high crown, it has to be laid down when taken out of the manufacturing plant and loaded again into the installation plant in order to be placed on a truck or container. And costly. The press device of the present invention reduces the labor and cost for carrying work, thereby reducing the labor and cost required for installation.

  Moreover, the effect which can adjust the height of a crown according to the indoor operation | work height of a press work or an installation factory by selecting from several fixing parts at the time of use and fixing a position of a lower rod is acquired. This is an effect of using a plurality of fixing parts in use by utilizing the fact that the lower rod is detachable from the fixing part in use and the fixing part in transportation. Once installed, the press machine rarely adjusts the height of the crown, but when it is brought into the installation factory or when the factory is moved, the crown is lowered due to restrictions on the press work and the indoor height of the installation factory. It may be necessary. The press apparatus of the present invention utilizes the fact that the height of the crown can be adjusted, and as a result, labor and cost for installation are reduced.

  And, by sandwiching the fixed part in use with a pair of upper and lower restraints, the lower rod is fixed to the fixed part in use so that it does not move either up or down, so that the lower rod is lifted by raising and lowering the tube supporting the ram. It is possible to suppress or prevent rattling and to stably lift and lower the ram during press work. Further, if the upper restraint is an annular member and the lower restraint is a female screw member using the general configuration of the lower rod, the lower restraint, which is a female screw member, is tightened, and a pair of upper and lower restraints is tightened. The fixing part can be firmly sandwiched by the tool when used. Furthermore, if the lower rod is fixed to the rod receiving part by interposing a spacer in the space between the upper restraining tool and the upper tube contact part or the fixing part in use, the ram supported on the tube can be moved up and down stably. To make sure.

  Also, the lower end of the tube is brought into contact with the tube contact portion, and the restraining tool is engaged with the fixed portion during transportation from below, thereby suppressing or preventing rattling of the tube and the lower rod. The effect of fixing the position stably is obtained. In addition, if the general configuration of the lower rod is used, for example, if the restraining tool is a female screw member, it can be used in common with the lower restraining tool for fixing the position of the lower rod to the fixing portion in use as described above. Then, the lower restraining tool can be tightened, and the tube and the restraining tool can firmly and firmly sandwich the fixing portion during transportation from the tube contact portion of the rod receiving portion. Furthermore, if the position of the lower rod is fixed to the rod receiving portion by interposing a spacer in the space between the restraining tool and the fixing portion at the time of transportation, both rod cylinders can be fixed more stably to the rod receiving portion.

  In addition to being able to stably fix the position of the lower rod to the horizontal plane, the rod receiving portion configured by laying a horizontal plane between a pair of vertical surfaces includes a restraint for fixing the position of the lower rod to the fixing portion during use or the fixing portion during transportation. It is contained in a range sandwiched between a pair of vertical surfaces, and the restraint has an effect of making it difficult to receive external force. From this, the box-shaped rod receiving portion having four vertical surfaces completely encloses the restraint tool by the four vertical surfaces, and is more sufficiently protected from external force. In addition, the rod receiving portion having the box structure has an advantage that oil leaking from both rod cylinders is stored and can be given a function of not leaking to the outside.

It is a front view showing an example of the press apparatus to which this invention of the state which fixed the lower rod to the fixing part at the time of use of the upper stage was applied. It is a perspective view showing the both rod cylinder and rod receiving part of the state which fixed the lower rod to the fixed part at the time of use of the upper stage. It is a front view showing the both rod cylinder and rod receiving part of the state which fixed the lower rod to the fixed part at the time of use of the upper stage. It is a front view showing the both rod cylinder and rod receiving part of the state which removed the spacer, the shim, and the lower restraint tool. It is a perspective view showing a spacer and a shim. It is a perspective view showing a lower restraint tool. It is a perspective view showing the both rod cylinder and rod receiving part of the state which pulled up both rod cylinders upwards. It is a front view showing the both rod cylinder and the rod receiving part of the state which pulled up both rod cylinders upwards. It is a perspective view showing the upper restraint tool. It is a front view showing both the rod cylinder and the rod receiving portion in a state where both rod cylinders are lowered and the tube is brought into contact with the tube contact portion. It is a front view showing both rod cylinders and a rod receiving portion in a state where upper and lower restraining tools are attached to the lower end of the lower rod. It is a front view showing the press apparatus of this example in a state where the lower rod is engaged with the fixing portion during transportation. It is a perspective view showing the both rod cylinder and rod receiving part of the state which made the lower rod hooked to the fixing | fixed part at the time of conveyance. It is a front view showing the both rod cylinder and rod receiving part of the state which made the lower rod engage with the fixing | fixed part at the time of conveyance. It is a front view showing the press apparatus of this example of the state which fixed the lower rod to the fixed part at the time of use of the lower stage. It is a perspective view showing the both rod cylinder and rod receiving part of the state which fixed the lower rod to the fixed part at the time of use of the lower stage. It is a front view showing the both rod cylinder and rod receiving part of the state which fixed the lower rod to the fixed part at the time of use of the lower stage.

  Hereinafter, embodiments for carrying out the present invention will be described with reference to the drawings. As shown in FIG. 1, the press device 1 to which the present invention is applied has an upper rod 21 by bolting a crown connection flange 211 provided at the upper end (each figure is a cover that covers the upper rod 21 for convenience of illustration). Is connected to the crown 11, and the lower rod 22 is fixed to the rod receiving portion 3 provided on the bed 12 and fixed to the tubes 23 of the four rod cylinders 2 at the upper edge of the tube 23. The ram 13 is connected and supported by bolting the provided ram connection flange 232. Accordingly, when the lower rod 22 is extended, the tube 23 is relatively raised, and the ram 23 supported by the tube 23 is raised. Conversely, when the lower rod 22 is contracted, the tube 23 is relatively lowered, and the ram 23 supported by the tube 23 is lowered.

  In the press device 1 of this example, hook hanging flanges 121 for lifting the whole by a crane are provided at the four corners of the bed 12. Thereby, when a hook (not shown) of the crane is hooked on the hook hooking flange 121, the entire pressing device 1 is lifted by the crane regardless of the height of the ram 13. Also, except for the bed 12, hook hanging flanges 131 for lifting the crown 11, the ram 13, and both rod cylinders 2 together by a crane are provided at the four corners of the ram 13. As a result, when a crane hook (not shown) is hung on the hook hooking flange 131, both the rod cylinder 2 in which the tube 23 is connected to the ram 13 via the ram connecting flange 232 and the crown connecting flange 211 are used. The crown 11 connected to the upper rod 21 of both rod cylinders 2 moves up and down with the ram 13, and the lower rod 22 can be inserted into and removed from the rod receiving portion provided on the bed 12.

  The rod receiving portion 3 includes, in order from the top, between the left and right side plates 36, 36, the tube contact portion 31, the upper use fixing portion 32, the lower use fixing portion 33, the transport fixing portion 34, and the bottom plate. 38, with a gap between them, the back side sandwiched between the side plates 36, 36 is closed with a back plate 37, and the front side between the side plates 36, 36 is closed with a removable front plate 35. It is a box. In the rod receiving portion 3 of this example, one of the left and right side plates 36 and the back plate 37 are directed to the notches having a rectangular shape in plan view provided at the four corners of the bed 12 and fixed to the bed 12 by bolting. . In addition, the rod receiving portion 3 of the present example includes a front plate 35, a side plate 36, and a rear plate 37 that are vertical surfaces, a tube contact portion 31 that is a horizontal surface, an upper use fixing portion 32, and a lower use fixing portion. The portion 33, the transport fixing portion 34, and the bottom plate 38 are orthogonal to each other to increase the rigidity as the foundation for supporting the lower rod 22.

  The tube contact portion 31 is a planar metal plate having a through hole 311 in the center in plan view, and constitutes the upper surface of the rod receiving portion 3, and both the lower rod 22 penetrates the through hole 311 from above. The lower end surface of the tube 23 of the rod cylinder 2 is contacted and supported. The through hole 311 is equal to the outer diameter of the rod body of the lower rod 22 and has the same diameter as through holes 321, 331 and 341 described later. The tube contact portion 31 of this example is reinforced by providing a metal contact ring 312 surrounding the through hole 311 in order to resist the load of the crown 11 and the ram 13 applied via the both rod cylinders 2. The lower end surface of the tube 23 is brought into contact with the contact ring 312. The contact ring 312 has an inner diameter equal to the outer diameter of the metal fitting ring 231 surrounding the lower rod 22 projecting from the tube 23, and when the lower end surface of the tube 23 is brought into contact with the contact ring 312, the fitting ring 312 The ring 231 is fitted, and also serves to prevent the horizontal displacement of the rod cylinders 2 with respect to the rod receiving portion 3.

  The upper fixing portion 32 is a rectangular metal plate with a through hole 321 provided in the center in plan view, and the lower rod 22 of both rod cylinders 2 extending downward through the tube contact portion 31 is fixed in position. Let The through hole 321 is equal to the outer diameter of the rod body of the lower rod 22 and has the same diameter as the through hole 311 and through holes 331 and 341 described later. When the lower rod 22 is fixed to the upper fixing portion 32 when used in the upper stage, the crown 11 is at a high position, and the lifting allowance of the ram 12 is increased (see FIG. 1). The lower rod 22 has a rod end reduced in diameter from the rod main body through a step 221 pierced through the through hole 321 from above, and the upper end of the step 211 is inserted into the upper restraint 4 fitted in the through hole 321 from above. The spacer 6 and the shim 7 are interposed between the upper restraint 4 and the tube contact portion 31 and the lower restraint 5 is screwed onto the male screw 222 formed at the rod end. Then, the position is fixed to the upper use fixing portion 32 so as to be sandwiched between the upper restraining tool 4 and the lower restraining tool 5.

  The lower use fixing portion 33 is a rectangular metal plate with a through hole 331 provided in the center in plan view, and both rods extending downward through the tube contact portion 31 and the upper use fixing portion 32. The position of the lower rod 22 of the cylinder 2 is fixed. The through hole 331 is equal to the outer diameter of the rod body of the lower rod 22 and has the same diameter as the through holes 311 and 321 and a through hole 341 described later. When the lower rod 22 is fixed to the fixing portion 33 when in use at the lower stage, the crown 11 is lowered and the ascending / descending allowance of the ram 12 is reduced (see FIG. 15 described later). As described above, the lower rod 22 has a rod end reduced in diameter from the rod body through the step 221 pierced through the through hole 331 from above, and the step 211 is fitted to the upper restraint 4 fitted in the through hole 331. And the spacer 6 and the shim 7 are interposed between the upper restraint 4 and the upper use fixing portion 32, and the lower restraint is fastened to the male screw 222 formed at the end of the rod. 5 is screwed and is fixed to the lower use fixing portion 33 so as to be sandwiched between the upper restraint 4 and the lower restraint 5.

  The transport fixing part 34 is a rectangular metal plate with a through hole 341 provided in the center in plan view, and passes through the tube contact part 31, the upper fixing part 32 and the lower fixing part 33 when used. The position of the lower rod 22 of both rod cylinders 2 extending downward is fixed. The through hole 341 is equal to the outer diameter of the rod body of the lower rod 22, and when the lower rod 22 is fixed to the fixing portion 34 during transportation having the same diameter as the through holes 311, 321, 331, the crown 11 is at the lowest position, The ram 12 can be lifted and lowered (see Figure 12 below). The lower rod 22 allows the rod body to pass through the through-hole 341 from above, and the upper restraining tool 4 is externally fitted to the rod end that is reduced in diameter from the rod body via the step 221. In use, the spacer 6 and the shim 7 are interposed between the fixing portion 33 and the lower restraint 5 is screwed onto the male screw 222 formed on the rod end portion, so that the spacer 6, shim 7, The restraining tool 4 and the lower restraining tool 5 are integrally engaged with the lower fixing part 33 when in use from below to fix the position to the fixing part 34 during transportation.

  The rod receiving portion 3 in this example is a box surrounded by the front plate 35, the side plates 36, 36, the back plate 37 and the bottom plate 38, and only the front plate 35 is detachable. From now on, when changing the target for fixing the position of the lower rod 22, the operation is performed by removing the front plate 35, and when the operation for fixing the position of the lower rod 22 is completed, the front plate 35 is attached. As a result, the oil that leaks down through the lower rod 22 accumulates inside the rod receiving portion 3 and does not leak out. For example, when the lower rod 22 is fixed to the upper fixing portion 32 when used in the upper stage, if the oil receiving pan is placed on the lower fixing portion 33 when used, the oil that leaks through the lower rod 22 flows into the oil receiving pan. Accumulate and collect easily. The excess space inside the rod receiving portion 3 can also be used as a storage space for tools required for fixing the position of the lower rod 22.

  In order to transport the press device 1, an operation of moving the fixing object of the lower rod 22 from the upper fixing portion 32 in use to the fixing portion 34 in transportation will be described. As shown in FIG. 1, the press device 1 of this example fixes the position of the lower rod 22 to the upper fixing portion 32 when in use, and makes the crown 11 the highest, as shown in FIG. The ram 12 can be used for press work with maximum lifting allowance. As shown in FIGS. 2 and 3, the operation of moving the fixing object of the lower rod 22 from the upper fixing portion 32 to the fixing portion 34 at the time of transporting has extended the lower rod 22 to the maximum as seen in FIGS. 2 and 3. In the state (the state where the tube 23 is farthest from the tube contact portion 31), the front plate 35 of the rod receiving portion 3 is removed. If an oil pan or the like is placed on the lower fixing portion 33 during use, or if a tool or the like is stored in an excess space inside the rod receiving portion 3, it is removed at this stage.

  First, as shown in FIG. 4, the lower restraint 5 that is screwed into the male thread 222 at the rod end of the lower rod 22 and attached to the lower rod 22, the upper restraint 4 and the tube contact portion The spacers 6 and shims 7 interposed between the two rod cylinders 2 disposed at the four corners are sequentially removed. Even in this stage, the lower rod 22 is engaged with the upper restraint 4 fitted in the through hole 321 of the upper use fixing portion 32 from above, so that the upper use fixing portion 32 is engaged with the upper rod. It does not fall down through the door. On the other hand, both the rod cylinders 2 from which the lower restraint 5, the spacer 6 and the shim 7 are removed from the lower rod 22 are in a state where they can be lifted upward.

  As shown in FIG. 5, the spacer 6 of this example is composed of a pair of metal blocks obtained by halving a perforated cylinder that can be fitted onto the rod body of the lower rod 22. One half metal block is provided with a horizontal coupling bolt insertion hole 62 extending toward the other metal block, and the other metal block is provided with a coupling nut hole 63 communicating with the coupling bolt insertion hole 62. ing. In the spacer 6 of this example, the rod body of the lower rod 22 is sandwiched between a pair of metal blocks, and the coupling bolt 61 inserted from the coupling bolt insertion hole 62 is screwed into the coupling nut hole 63 so that the metal block is integrated. Is fitted on the lower rod 22 and is interposed between the upper restraining tool 4 and the tube contact portion 31.

  The shim 7 of this example is a pair of metal plates having a semicircular arc shape in plan view that can be fitted on the rod body of the lower rod 22. The shim 7 is basically of the same thickness, but the thickness of the shim 7 can be adjusted by laminating a combination of different thicknesses. The shim 7 whose thickness is adjusted by the number of sheets and the respective thicknesses is not required to be adjusted thereafter, and is handled in a stacked state. For example, the thickness of each shim 7 and the number of stacked layers are adjusted so that the sum of the height of the spacer 6 and the stacked height of the shims 7 is equal to the distance between the upper restraint 4 and the tube contact portion 31. As a result, when the spacer 6 and the shim 7 are interposed between the upper restraining tool 4 and the tube contact portion 31, the upper restraining tool 4 is pressed against the fixing portion 32 when used in the upper stage without any gap, and both rod cylinders The backlash of 2 can be prevented or suppressed. Although the laminated shims 7 are not joined to each other, they are sandwiched between the spacer 6 and the upper restraining tool 4, so that there is no possibility of coming off or shifting.

  The spacer 6 and the shim 7 are each provided with a pair of shims 7 which are semi-circular metal plates in plan view with respect to the lower rod 22 engaged from above with the upper use fixing part 32 by the upper restraint 4. Place the rod body of the lower rod 22 on the upper restraint 4 so that both ends meet, and then sandwich the metal block constituting the spacer 6 with the rod body of the lower rod 22 so that the respective end faces meet Then, it is placed on the shim 7 and integrated by the connecting bolt 61, and is interposed between the upper restraint 4 and the tube contact portion 31. When removing the spacer 6 and the shim 7 from the lower rod 22 (see FIG. 4), the coupling bolt 61 is pulled out to disassemble the pair of metal blocks and remove the spacer 6 from the lower rod 22, and then remove the pair of shims 7 from the lower rod. Remove from 22.

  As shown in FIG. 6, the lower restraining tool 5 in this example is formed with a female screw 51 on the inner peripheral surface and a handle hole 52 for inserting a handle for rotation operation (not shown) on the outer peripheral surface in the circumferential direction. A plurality of thick cylindrical metal blocks are provided (the handle hole 52 and the like are not shown except for FIG. 6). If the handle is stored in the excess space of the rod receiving portion 3, it will not be lost. The metal block has a structure in which a tightening bolt 53 is screwed into a tightening nut hole 55 from a tightening bolt insertion hole 54 that sandwiches a slot 56 that divides in the circumferential direction. The inner diameter of the female screw 51 can be increased by loosening the tightening bolt 53. In addition, the restraining tool 5 under this example is provided with an extrusion nut hole 57 between the tightening bolt insertion holes 54.

  The lower restraint 5 is screwed into the male screw 222 provided at the rod end of the lower rod 22 by inserting the handle into the handle hole 52 and rotating it with the tightening bolt 53 loosened and opened. And attached to the rod end. Then, for example, if the upper surface of the lower restraint 5 is brought into close contact with the upper fixing portion 32 when used, and then tightening the tightening bolt 53, the inner diameter of the female screw 51 of the lower restraint 5 is reduced. The female screw 51 meshes with the male screw 222 of the lower rod 22 and is difficult to loosen. When the lower restraint 5 is removed from the lower rod 22 (see FIG. 4), since the female screw 51 is engaged with the male screw 222 of the lower rod 22, the tightening bolt 53 screwed into the extrusion nut hole 57 is used. After pressing the end face of the opposing slot 56 and pushing open the slot 56, the fastening bolt 53 screwed into the fastening nut hole 55 is loosened to increase the inner diameter of the female screw 51, and the handle hole The handle is inserted into 52 and rotated to remove it from the male screw 222 of the lower rod 22.

  In order to remove the upper restraint 4 from the lower rod 22 from which the lower restraint 5, the spacer 6 and the shim 7 have been removed, a crown 11 is pulled by a crane (not shown) hooked on a hook hanging flange 131 provided on the ram 13. Then, the ram 13 and both rod cylinders 2 are lifted together, and the lower rod 22 is pulled upward as seen in FIGS. Thereby, the upper restraint tool 4 is released from the step 221 of the lower rod 22, and the upper restraint tool 4 can be easily taken out from the through-hole 321 of the upper fixing portion 32 in use. Then, by removing the upper restraint 4, the through holes 311, 321, 331, and 341 of the tube contact portion 31, the upper use fixing portion 32, the lower use fixing portion 33, and the transport fixing portion 34 are all communicated with the same diameter. Then, the lower rod 22 can be lowered to the through hole 341 of the fixing portion 34 during transportation (see FIG. 10 described later).

  As shown in FIG. 9, the upper restraining tool 4 in this example includes a step formed radially outward from the upper peripheral edge of the lower inner peripheral surface equal to the outer diameter of the rod end of the lower rod 22, and the lower The engaging recess 41 composed of the upper inner peripheral surface equal to the outer diameter of the rod body of the rod 22 is in the upper half, for example, the lower peripheral edge of the upper outer peripheral surface having an outer diameter larger than the through-hole 321 of the fixing portion 32 when used in the upper stage Is a metal block provided with a fitting convex portion 42 formed in a lower half of a step formed radially inward from a lower step outer peripheral surface inscribed in the through hole 321. As described above, the upper restraining tool 4 in this example has a through hole whose upper inner peripheral surface is equal to the outer diameter of the rod body of the lower rod 22 in the engaging recess 41, and the lower inner peripheral surface is the rod end of the rod 22 described above. The fitting protrusions 42 have through holes equal to the outer diameters of the respective portions and penetrate vertically.

  The upper restraint 4 is not attached to the lower rod 22 at a fixed position. For example, the upper restraint 4 is sandwiched between the step 221 of the lower rod 22 and the upper fixing portion 32 when used, and is fitted on the lower rod 22. Is attached. Specifically, the engaging recess 41 and the step 221 of the lower rod 22 with the rod end passing through the engaging protrusion 42 are fitted into the through-hole 321 provided in the upper fixing portion 32 when in use, and the engaging recess By engaging with 41, the lower rod 22 is engaged with the upper use fixing portion 32 from above while being fitted on the rod body. When removing the upper restraint tool 4 from the lower rod 22 (see FIG. 8), as described above, the lower rod 22 is lifted upward and the rod body is pulled out from the engaging recess 41 to release the restraint by the lower rod 22. By doing so, it can be easily removed from the through-hole 321 of the fixing portion 32 when used in the upper stage.

  In the press device 1 in which the upper restraint 4, the lower restraint 5, the spacer 6, and the shim 7 are removed from the lower rod 22 in this way, the lower rod 22 is inserted into the through-hole of the fixing portion 34 during transportation as seen in FIG. 10. The fitting ring 231 provided on the lower end surface of the tube 23 is fitted to the abutment ring 311 of the tube abutting portion 31, and the lower end surface of the tube 23 is abutted against the abutting ring 311. Until the crown 11, the ram 13 and the both rod cylinders 2 are lowered. In this state, the crown 11, the ram 13, and both rod cylinders 2 are supported by the rod receiving portion 3 having the tube contact portion 31 that is in contact with the tube 23 as the uppermost stage. The lower rod 22 is in a suspended state in which the rod end does not reach the bottom plate 38.

  First, the upper restraining tool 4 is externally fitted to the lower rod 22 in which the tube 23 is brought into contact with the tube contact portion 31 from the end of the rod. Then, the lower restraint 5 is screwed into the male screw 222 at the end of the rod to push up the upper restraint 4, and as shown in FIG. The step 221 of the lower rod 22 is closely engaged. As described above, when the step 221 of the lower rod 22 is closely engaged with the engagement recess 41 of the upper restraint 4, the upper restraint 4 fitted to the through-hole 321 of the upper fixing portion 32 and the tube contact with the upper restraint 4 are used. An equal length is formed between the contact portion 31 and the upper restraint 4 and the lower use fixing portion 33. After the lower restraint 5 is screwed into the male thread 222 of the lower rod 22, the fastening bolt 53 is tightened and fixed. The amount of screwing of the lower restraining tool 5 is increased by the thickness of the fixing portion 32 in use in the upper stage.

  If the spacer 6 and the shim 7 are interposed between the upper restraint 4 whose length is adjusted in this way and the lower use fixing portion 33, the fixing object of the lower rod 22 is fixed to the upper use fixing portion 32. The work to move from the fixed part 34 to the fixing part 34 during transportation is completed. Specifically, the shim 7 is placed on the upper restraint 4, and a metal block constituting the spacer 6 is placed on the shim 7 and integrated with the connecting bolt 61, as shown in FIGS. 12 to 14. As shown, the spacer 6 and the shim 7 are interposed between the upper restraint 4 and the lower use fixing portion 33. The press device 1 which has finished the work of moving the fixing object of the lower rod 22 from the fixing part 32 in the upper stage to the fixing part 34 in the transportation has no up and down allowance for the ram 13, and the total height (the height of the crown 12) is maximized. It is kept low (Fig. 1 and Fig. 12 comparative control).

  The upper restraining tool 4 is pushed up by the lower restraining tool 4 from below and is fitted onto the lower rod 22 while being engaged with the step 221 from below. The lower restraining tool 5 is attached to the male screw 222 of the lower rod 22. Since they are screwed together, there is no possibility that they will come off from the lower rod 22. Further, since the pair of metal blocks sandwiching the lower rod 22 are integrated by the connecting bolt 61, the spacer 6 is not likely to be detached from the lower rod 22. The shim 7 is merely sandwiching the lower rod 22 from the left and right, but is held between the spacer 6 and the upper restraining tool 4, so there is no possibility that the shim 7 will come off the lower rod 22. Thus, in a state where the work of moving the fixing object of the lower rod 22 from the upper use fixing part 32 to the transportation fixing part 34 is finished, the upper restraining tool 4, the lower restraining tool 5, the spacer 6 and the shim 7 are Both are stably attached to the lower rod 22.

  The double rod cylinder 2 of the press device 1 that has finished the work of moving the fixing object of the lower rod 22 from the fixing part 32 in the upper stage to the fixing part 34 in the transportation is in contact with the tube contact part 31 at the lower end surface of the tube 23. The spacers 6 which are brought into contact with the ring 311 from above and are stably mounted on the lower rod 22 are engaged from below, so that the position is stably fixed to the fixing portion 34 during transportation. In particular, since the back end of the tube 23 can be brought into contact with the contact ring 311 of the tube contact portion 31 from above to prevent the entire rod cylinder 2 from rattling, both rod cylinders 2 due to vibration are transported when the press device 1 is transported. Can be prevented from being damaged. The press device 1 is lifted by hooking a hook (not shown) of a crane on a hook-hanging flange 121 provided on the bed 12, for example, being carried out from a manufacturing factory, and carried into an installation factory.

  The press device 1 that has finished the transport operation can perform the press operation by moving the fixing object of the lower rod 22 from the transport fixing portion 34 to the upper use fixing portion 32 by the reverse procedure described above. Specifically, it is as follows. First, remove the spacer 6 and the shim 7 that are engaged with the fixing portion 34 from below from the lower rod 22, loosen the lower restraining tool 5 and remove it from the end of the rod, and remove the upper restraining tool 4 from the lower rod 22. Unplug it. Next, hook the crane hook (not shown) on the hook hooking flange 131 provided on the ram 13 to lift the crown 11, the ram 13 and both rod cylinders 2 together, and the rod end of the lower rod 22 is in contact with the tube. The upper restraint 4 is removed from the through hole 341 of the fixing part 34 during transportation by pulling up until it is positioned between the fixing part 32 and the upper part fixing part 32 during use.

  Then, the upper restraining tool 4 (to be precise, the fitting convex portion 42) previously removed from the through hole 341 of the transport fixing portion 34 is fitted into the through hole 321 provided in the upper fixing portion 32 at the time of use. After that, the crown 11, the ram 13 and the both rod cylinders 2 suspended from the crane are slowly lowered together, and the rod end of the lower rod 22 is inserted into the engaging recess 41 of the upper restraint 4 to form the step 221. Engage with the engaging recess 41. Finally, the lower restraint 5 is screwed into the male screw 222 provided at the rod end of the lower rod 22 that protrudes downward from the upper fixing portion 32 during use, and the upper restraint 4 and the tube contact portion 31 are engaged. If the spacer 6 and the shim 7 are repositioned between the two, the operation of moving the fixing object of the lower rod 22 from the fixing part 34 at the time of transportation to the fixing part 32 at the time of use is completed.

  The press device 1 of this example is provided with a lower use fixing portion 33 below the upper use fixing portion 32, as shown in FIG. 15 to FIG. If the lower rod 22 is fixed to the lower fixing portion 33 when in use, the height of the crown 12 can be suppressed and the total height suitable for an installation factory with a low ceiling can be obtained. The work of moving the fixing object of the lower rod 22 from the fixing part 34 at the time of transportation to the fixing part 33 at the time of lower use is performed by sandwiching the fixing part 33 at the time of lower use by the upper restraining tool 4 and the lower restraining tool 5. In addition to interposing the spacer 6 and the shim 7 between the restraint 4 and the upper fixing part 32 when used, the work of moving the fixing object of the lower rod 22 from the fixing part 34 when transporting to the fixing part 32 when using the upper part; Since it is the same, description is abbreviate | omitted.

1 Press device
11 Crown
12 beds
13 Ram 2 Double rod cylinder
21 Upper rod
22 Lower rod
221 steps
222 Male thread
23 tubes
231 Mating ring 3 Rod receiving part
31 Tube contact
32 Upper fixed part when used
33 Lower part fixed part when used
34 Constraints on fixed part 4 during transportation
41 Hook recess
42 Mating convex part 5 Lower restraint
51 Female thread 6 Spacer 7 Shim

Claims (7)

In a press device in which the upper rod is connected to the crown and the ram is supported by a tube of both rod cylinders in which the lower rod is fixed to the bed,
Provided with through-holes communicating with each other in the vertical direction, a tube contact portion arranged in order from the top apart in the vertical direction, a rod receiving portion having a fixing portion during use and a fixing portion during transportation, provided in the bed,
At the time of press work, the lower rod of both rod cylinders that penetrate the through hole of the tube contact part is detachably fixed to the fixed part when used,
During transportation work, the lower end of the tube of both rod cylinders is brought into contact with the tube contact part, and the lower rod of both rod cylinders that have passed through the tube contact part and the through hole of the fixed part in use is used as the fixed part during transportation. A press apparatus characterized in that the position is detachably fixed. The rod receiving portion has a plurality of through-holes communicating in the vertical direction, and has a plurality of in-use fixing portions that are arranged in order from the top apart in the vertical direction,
At the time of pressing, the lower rod of both rod cylinders through which the through-hole of the fixing portion when used is higher than the tube fixing portion when used and the fixing portion when used is detachably fixed to the selected fixing portion when used. The press apparatus according to claim 1. The rod receiving part passes the lower rod of both rod cylinders through the through hole provided in the fixing part at the time of use, and sandwiches the fixing part at the time of use with a pair of upper and lower restraints detachably attached to the lower rod, The press device according to claim 1, wherein the lower rod is fixed to the fixing portion during use. The rod receiving part has a spacer between the upper restraint mounted on the lower rods of both rod cylinders and the tube abutting part or the fixing part in use higher than the fixing part in use above the position where the lower rod is fixed. The press apparatus according to claim 3, wherein the press apparatus is detachably interposed. The rod receiving part allows the lower rod of both rod cylinders to pass through the through holes provided in the tube abutting part and the fixed part during transportation, the tube abutting part abuts the lower end of the tube, and is detachable from the lower rod. The press device according to any one of claims 1 to 4, wherein a position of the lower rod is fixed to the fixing portion during transportation by engaging the mounted restraining tool with the fixing portion during transportation from below. 6. The press apparatus according to claim 5, wherein the rod receiving portion is configured such that a spacer is detachably interposed between a restraining tool attached to a lower rod of both rod cylinders and a fixing portion at the time of transportation where the position of the lower rod is fixed. The rod receiving portion includes a plurality of horizontal planes spanning a pair of vertical surfaces, the uppermost layer of which is a tube contact portion, the lowermost layer of the horizontal plane is a fixed portion during transportation, and the remainder of the horizontal plane is a fixed portion during use. -6 press apparatus.

Images