CN220636067U - Press forming device - Google Patents

Abstract

The utility model provides a press forming device. The press forming device is provided with a mechanism for easily feeding and discharging the lower die relative to the press forming device after being lifted from the lower die set. A press molding device (100) for press molding a workpiece (W) into a predetermined shape by using an upper die (20) attached to an upper die set (10) and a lower die (40) detachably attached to a lower die set (30), wherein a guide body (60) is disposed on each of a left side surface (13) and a right side surface (14) of the upper die set (10) in a conveying direction of the workpiece (W), and a hanging jig (50) capable of being engaged with the lower die (40) is slidably movable along the guide body (60) and detachably attached to the guide body (60).

Description

Press forming device

Technical Field

The present utility model relates to a press molding apparatus.

Background

In a press molding apparatus for press-molding a workpiece into a predetermined shape by using an upper die attached to an upper die set and a lower die detachably attached to a lower die set, a structure disclosed in patent document 1 (JPB 3968701) is known as a mechanism for removing a die from the press molding apparatus at the time of maintenance or breakage of the die.

Prior art literature

Patent literature

Patent document 1: JPB3968701 (claims 1-2; paragraph 0018; FIGS. 1-2, et al)

Disclosure of Invention

Problems to be solved by the utility model

Patent document 1 discloses a mold extracting mechanism for extracting a mold from a press molding apparatus. Patent document 1 discloses a technique for moving a lower die in a lateral direction or a technique for hanging and moving a lower die after the lower die is lifted from a lower die set, but does not disclose a specific configuration. Therefore, the lower die detached from the lower die set may be pulled out while being pulled on the lower die set, and the lower die set may be damaged. Accordingly, it is desirable to propose a press molding apparatus having a specific lower die feeding and discharging mechanism for feeding and discharging a lower die to and from the press molding apparatus after being lifted from a lower die set.

Solution for solving the problem

The present utility model has been made to solve the above problems, and its object is to provide the following. That is, an object of the present utility model is to provide a press molding apparatus including a mechanism for easily feeding and discharging a lower die to and from the press molding apparatus after being lifted from a lower die set.

In order to solve the above problems, the inventors have conducted intensive studies and have devised the following configurations. Specifically, the present utility model is a press molding apparatus for press-molding a workpiece into a predetermined shape by using an upper die attached to an upper die set and a lower die detachably attached to a lower die set, wherein guide bodies are disposed on left and right sides of the upper die set in a conveying direction of the workpiece, respectively, and a hanging jig capable of slidably moving along the guide bodies and detachably engaging with the lower die is attached to each of the guide bodies.

This makes it possible to easily feed and discharge the lower die to and from the press molding apparatus after being lifted from the lower die set.

Further, the hanging jig preferably includes a 1 st member attached to each of the guide bodies and a 2 nd member engaged with the lower die, and a long hole is formed in the 1 st member, and a protrusion is provided upright on the 2 nd member, and is capable of sliding and rotating along the long hole while being inserted into the long hole.

Accordingly, even when the distance between the upper die and the lower die is minimized, the attachment of the hanging jig to the guide body and the engagement operation of the guide body to the lower die can be reliably performed, and breakage of the press molding apparatus or the like due to collision of the hanging jig can be prevented when the upper die and the lower die are brought close to each other.

Further, it is preferable that a 1 st guide groove and a 2 nd guide groove are formed in each of the guide bodies, the 1 st guide groove is provided to extend in a conveying direction of the workpiece and is opened downward, the 2 nd guide groove is provided to extend in the conveying direction of the workpiece and is opened laterally, and the 1 st slider sliding in the 1 st guide groove and the 2 nd slider sliding in the 2 nd guide groove are disposed in the hanging jig.

Therefore, the hanging fixture can be prevented from being separated from the guide body.

Further, it is preferable that a conveyor for feeding and discharging the lower die detached from the lower die set in a left-right direction with respect to the conveying direction of the workpiece is housed in the lower die set so as to be slidable in the conveying direction of the workpiece, and more preferably, an upper end surface height position of the conveyor is lower than a lower surface side height position of a top plate of a workpiece holder which is provided upright on the lower die set and holds a bottom surface of the workpiece.

Thus, the lower die detached from the lower die set can be placed on the conveyor at an arbitrary position in the press molding apparatus. In addition, the conveyor does not need to be independent, and the conveyor can be stored in the press molding device in a state that does not interfere with press molding processing when not in use.

ADVANTAGEOUS EFFECTS OF INVENTION

By adopting the structure of the press molding apparatus of the present utility model, the lower die can be easily fed into and out of the press molding apparatus after being lifted from the lower die set.

Drawings

Fig. 1 is a right side view of the press molding apparatus of the present embodiment.

Fig. 2 is a front view of fig. 1.

Fig. 3 is a right side view and a front view of the hanging jig of the present embodiment.

Fig. 4 is an enlarged perspective view of an end portion of the guide body according to the present embodiment.

Fig. 5 is a plan view of the main part of the lower die set.

Fig. 6 is a schematic right side view showing a state in which the upper die in the press molding apparatus is lowered to the bottom dead center position.

Fig. 7 is a schematic right side view showing a state in which the upper die is raised to a predetermined height position from the state shown in fig. 6.

Fig. 8 is a schematic right side view showing a state immediately before the hanging jig is attached to the press molding apparatus shown in fig. 7.

Fig. 9 is a schematic right side view showing a state in which a hanging jig of a press molding apparatus is engaged with a hanging bolt of a lower die.

Fig. 10 is a schematic right side view showing a state in which the upper die set is lifted and the lower die is suspended from the state shown in fig. 9.

Fig. 11 is a schematic right side view showing a state in which the lower die is slid along the guide body to the die delivery position.

Fig. 12 is a schematic right side view showing a state in which the conveyor is moved to the mold delivery position.

Fig. 13 is a schematic right side view showing a state in which a mold is placed on a conveyor.

Fig. 14 is a schematic right side view showing a state in which the upper die set is raised to enable the upper die and the lower die to be sent out.

Detailed Description

Embodiments of the present utility model will be specifically described below with reference to the drawings. In the present embodiment, the direction from the conveyance source (upstream side) to the conveyance destination (downstream side) in the conveyance direction of the workpiece W is the front.

As shown in fig. 1 and 2, the press molding apparatus 100 of the present embodiment includes an upper die 20 attached to an upper die set 10, a lower die 40 attached to a lower die set 30, and a pressing mechanism, not shown. The pressure mechanism of the present embodiment can adopt a known structure for bringing the upper die set 10 into contact with and separating from the lower die set 30, and therefore a detailed description of the pressure mechanism is omitted here.

An upper die 20 is detachably mounted on the lower surface 11 of the upper die set 10. A working arm of a pressing mechanism, not shown, is mounted on the upper surface 12 of the upper die set 10. Guide bodies 60 are attached to the left side surface 13 and the right side surface 14 of the upper die set 10, the guide bodies 60 being configured to hold the hanger jig 50 slidably in the conveying direction of the workpiece W, and the hanger jig 50 being configured to hold the lower die 40 in a hanging manner. The lower die 40 of the present embodiment is provided with a hanger bolt 42 screwed to the left and right sides of the lower die with respect to the conveying direction of the workpiece W.

As shown in fig. 3, the hanging jig 50 of the present embodiment includes a 1 st member 51 and a 2 nd member 52. A long hole 53 is formed in the 1 st member 51, and the long hole 53 penetrates the 1 st member 51 in the plate thickness direction and extends in the extending direction of the 1 st member 51. A grip hole 54 is formed on the upper end portion side of the 1 st member 51. A housing pin insertion hole 55 is provided between the long hole 53 and the grip hole 54. A 1 st guide piece 56 is provided upright on the upper surface of the 1 st member 51 at the widthwise center position. Further, the 2 nd guide piece 57 standing toward the inside of the press molding apparatus 100 (standing in a direction orthogonal to the standing direction of the 1 st guide piece 56) is erected on both side portions in the width direction of the grip hole 54. The 1 st guide piece 56 and the 2 nd guide piece 57 can preferably use cam followers.

The 2 nd member 52 of the present embodiment is formed to be narrower in width than the 1 st member 51 and shorter in length than the 1 st member 51. A hook 58 engageable with the hanger bolt 42 of the lower die 40 is formed at the lower end of the 2 nd member 52, and the hook 58 is opened in the front-rear direction of the work material conveying direction. Further, a shaft member 59 as a protrusion inserted (entered) into the long hole 53 of the 1 st member 51 is attached to the upper portion of the 2 nd member 52. As such a shaft member 59, a bolt can be exemplified. The shaft member 59 is erected on the 2 nd member 52 in a state penetrating the 2 nd member 52 in the plate thickness direction. The shaft member 59 is inserted into the long hole 53 and a washer disposed at an opening portion of the long hole 53 on the opposite side of the 2 nd member 52, and a nut is screwed to the tip end of the shaft member 59. Further, a 2 nd receiving pin insertion hole 52A penetrating in the plate thickness direction of the 2 nd member 52 is provided to penetrate the upper end portion side of the 2 nd member 52.

With respect to the 2 nd member 52 mounted on the long hole 53 of the 1 st member 51 by the shaft member 59 in this way, the shaft member 59 is fitted into the long hole 53 of the 1 st member 51, is slidably movable within a range in which the long hole 53 is formed, and is rotatable about the shaft member 59 as a rotation axis. That is, the 2 nd member 52 can be (rotated to) be bent with respect to the 1 st member 51 at the position of the shaft member 59. Thus, even when the hanging jig 50 collides with the structure of the press forming apparatus 100, the impact can be reduced when the hanging jig 50 is moved along the guide 60 and the hanging jig 50 is lifted by the pressure mechanism. Further, the hook portion 58 of the hanging jig 50 can be easily engaged with the hanging bolt 42 of the lower die 40. The hanging jig 50 when not in use can be fixed in a state in which the 2 nd member 52 is accommodated in the planar range of the 1 st member 51 by inserting the accommodating pin SP (the below-described drop-off preventing pin 63 formed in the same shape can also be used as the accommodating pin SP) with the 2 nd accommodating pin insertion hole 52A of the 2 nd member 52 aligned with the accommodating pin insertion hole 55 (overlapped in the plate thickness direction). Accordingly, the hanging jig 50 is preferably easy to transport.

As shown in fig. 2 and 4, the guide body 60 of the present embodiment has a 1 st guide body 61 having a cross-sectional shape formed in a groove shape (letter U-shape) and a 2 nd guide body 62 having a cross-sectional shape formed in a letter L-shape. The guide body 60 is disposed in a range including at least a planar position of the lower die 40 and a planar position at which the lower die 40 can be fed to either one of the left and right sides of the press molding apparatus 100 (upper die set 10). The 1 st guide body 61 is fixed to the side surface of the upper die set 10 by a fixing bolt B so that the opening portion thereof faces laterally outward. In addition, the 1 st guide body 61 of the present embodiment is formed such that the rising height of the lower rising portion 61B is larger than the rising height of the upper rising portion 61A. A fixing bolt B for fixing the 1 st guide body 61 to the side surface of the upper die set 10 is screwed into a screw hole 15 formed in the side surface of the upper die set 10 from the inner bottom of the 1 st guide body 61.

At least one end portion of the 1 st guide body 61 in the longitudinal direction is cut with an upper standing portion 61A extending over a desired length range. A through hole H is formed in the lower upright portion 61B facing the cut portion of the upper upright portion 61A in the vertical direction, and a release preventing pin 63 of the hanging jig 50 is provided upright in the through hole H (the storage pin SP formed in the same shape as described above may be used as the release preventing pin 63). The retaining pin 63 has a small diameter portion 63A and a large diameter portion 63B, and the small diameter portion 63A is inserted into the through hole H, whereby the retaining pin 63 is detachably erected on the lower standing portion 61B. The 1 st guide body 61 of the present embodiment is provided with a retaining pin 63 at each of both longitudinal end portions.

The 2 nd guide body 62 is disposed in a state in which the short side 62A is directed downward and the distal end surface of the long side 62B is in contact with the side surface of the upper die set 10 and with the upper surface of the upper rising portion 61A of the 1 st guide body 61. The 2 nd guide body 62 is fixed to the upper rising portion 61A of the 1 st guide body 61 by a fixing bolt B from the upper surface of the 2 nd guide body 62. The guide body 60 attached to the side surface of the upper die set 10 in this way has the 1 st guide groove 64 opening downward and the 2 nd guide groove 65 (recess of the 1 st guide body 61) opening outward in the lateral direction by the upper side rising portion 61A of the 1 st guide body 61 and the 2 nd guide body 62. Further, the 1 st guide piece 56 enters the 1 st guide groove 64, and the 2 nd guide piece 57 enters the 2 nd guide groove 65, and the 1 st guide piece 56 and the 2 nd guide piece 57 roll along the 1 st guide groove 64 and the 2 nd guide groove 65. Thus, the hanging jig 50 can slide in the left-right direction and the height direction (up-down direction) along the guide body 60 without generating unexpected positional displacement.

In the lower die set 30 of the present embodiment, the workpiece holding portions 70 that hold the bottom surface of the workpiece W are disposed at a plurality of positions along the conveying direction of the workpiece W (see fig. 1). The work material holding portion 70 of the present embodiment is formed in an inverted letter L shape rising from the lower die set 30. The workpiece holding portion 70 is provided so that the upper surface height position is aligned with the conveying height HT position of the workpiece W, and is erected at a plurality of positions in the conveying direction of the workpiece. In the present embodiment, the conveyor 80 of the lower die 40 is stored in a space formed between the work material holding portion 70 and the lower die set 30, which is disposed in the vicinity of the planar position where the lower die 40 is fed to the side surface of the press forming apparatus 100. That is, the upper end height position of the conveyor 80 is lower than the lower surface side height position of the top plate holding the bottom surface of the work material holding portion 70 (the height of the space formed between the work material holding portion 70 and the lower die set 30).

As shown in fig. 5, the conveyor 80 is fixed to the upper surface of the lower die set 30 by fixing bolts B in a state of being installed on two rails 81 arranged parallel to the conveying direction of the workpiece W. In the basic structure of the conveyor 80, a roller box 84 accommodating a plurality of conveying rollers 83 is fixed by fixing bolts B in the longitudinal direction of main body portions 82 that are bridged over two rails 81. A handle 85, a slider 86, and a stopper 87 are attached to each of both ends of the body 82 in the longitudinal direction of the present embodiment. The handle 85 of the present embodiment is formed of a bolt, and can fix the main body 82 (the conveyor 80) at a position of a positioning hole 88 as a fixing portion formed at a desired position in the longitudinal direction of the rail 81, and can be used as a grip portion when the conveyor 80 is moved. When the fixing of the conveyor 80 by the handle 85 is released, the conveyor 80 can be moved while the slider 86 is rolled or slid along the rail 81. The stopper 87 is attached to the slider 86 in a state of rising upward from the upper surface of the slider 86. The stopper 87 is used to position the lower die 40 with respect to the lower die set 30 when the lower die 40 that is in contact with each other is mounted on the lower die set 30. As described above, the conveyor 80 according to the present embodiment can be accommodated in the space formed by the lower die set 30 and the work material holding portion 70 when not needed, and can be placed only at a position in the predetermined length direction of the rail 81 when needed.

Next, a method for replacing the lower die 40 of the press molding apparatus 100 according to the present embodiment will be described. Fig. 6 shows a state in which the upper die set 10 (upper die 20) is lowered to the bottom dead center position. Here, the state shown in fig. 6 is set to the initial state. As shown in fig. 7, the operator operates a pressure mechanism (not shown) to raise the upper die set 10 to a predetermined position (a position 15cm above the bottom dead center). Next, as shown in fig. 8, the operator attaches the hanging jig 50 from the end position in the longitudinal direction of the guide body 60 as shown by arrow a in the figure, and inserts the small diameter portion 63A of the retaining pin 63 into the through hole H of the guide body 60 as shown by arrow B in the figure. Next, as shown in fig. 9, the operator slides the hanging jig 50 along the guide 60 to a position immediately above the lower die 40, and then engages the hook 58 of the hanging jig 50 with the hanging bolt 42 of the lower die 40. Since the two hanging bolts 42 are respectively erected on the left and right side surfaces of the lower die 40, the hook portion 58 on the upstream side (left side in fig. 9) in the conveying direction of the work material engages with the hanging bolt 42 on the upstream side in a state in which the opening portion is opened to the downstream side. In the same manner, the hook 58 on the downstream side in the material conveying direction engages with the hanger bolt 42 on the downstream side in a state in which the opening is opened on the upstream side.

After the hanging jig 50 is engaged with the hanging bolt 42 of the lower die 40, or before the hanging jig 50 is engaged with the hanging bolt 42 of the lower die 40, the operator releases the fixation between the lower die 40 and the lower die set 30. Next, as shown in fig. 10, the operator operates a pressure mechanism, not shown, to raise the upper die set 10 up to a predetermined height position away from the lower die set 30, and slides the upper die set along the guide 60 toward a die feeding position, which is a predetermined position shown by an arrow C. Fig. 11 is a schematic right side view showing a state in which the lower die 40 is slid along the guide 60 to a predetermined position. Next, as shown in fig. 12, the operator slides the conveyor 80 from the storage position (the planar position of the work material holding portion 70) to a position directly below the lower die 40, and inserts the handle 85 into the positioning hole 88, thereby fixing the conveyor 80 to the delivery position of the lower die 40.

Next, the operator operates the pressing mechanism, and places the lower die 40 on the conveying roller 83 of the conveyor 80 as shown in fig. 13. Then, the operator releases the engagement between the hanging bolt 42 and the hanging jig 50, and separates the hanging jig 50 from the lower die 40. Thereafter, as shown in fig. 14, the operator operates a pressure mechanism, not shown, to raise the upper die set 10 to a predetermined height position. Next, the operator slides the lower die 40 mounted on the conveyor 80 toward an extension conveyor or a die carrier, not shown, which is connected to the conveyor 80, and sends the lower die 40 from the press forming apparatus 100 in a direction D (a direction of drawing depth) in the drawing. By feeding the lower die 40 from the press molding apparatus 100 in this manner, damage to the structure of the press molding apparatus 100 such as the lower die set 30 can be prevented.

In the above steps, only the lower die 40 is sent out from the press molding apparatus 100, but the upper die 20 and the lower die 40 may be sent out from the press molding apparatus 100 at the same time. Specifically, the operator may separate the upper die set 10 from the upper die set 10 at the time of the state shown in fig. 9 or after the upper die set 10 is lowered to the bottom dead center position from the state shown in fig. 9. When the upper die 20 is separated from the upper die set 10, the upper die 20 shown in fig. 10 and thereafter is in a state indicated by a one-dot chain line. The above steps may be performed in reverse with respect to the feeding of the lower die 40 into the press molding apparatus 100, and thus a detailed description thereof will be omitted here. When the lower die 40 (or the lower die 40 and the upper die 20 stacked on the lower die 40) is mounted (placed) on the lower die set 30 of the press molding apparatus 100, the lower die 40 can be placed on the lower die set 30 in a position aligned state by bringing the widthwise end surface of the lower die 40 into contact with the inner standing surface of the stopper 87.

While the press molding apparatus 100 according to the present utility model has been described above based on the embodiments, the technical scope of the present utility model is not limited to the above embodiments. For example, in the above embodiment, the hook portion 58 of the hanging jig 50 is engaged with the hanging bolt 42 of the lower die 40, but the present utility model is not limited to this form. The hanging jig 50 may be configured to hang the lower die 40 by engaging an engagement portion (male screw portion) with a recess (screw hole into which the hanging bolt 42 is screwed) formed in the lower die 40 on the left and right side surfaces with respect to the conveying direction of the workpiece.

The guide body 60 of the present embodiment has the 1 st guide groove 64 and the 2 nd guide groove 65, and in the hanging jig 50, the 1 st guide piece 56 is inserted into the 1 st guide groove 64 and the 2 nd guide piece 57 is inserted into the 2 nd guide groove 65, but the present utility model is not limited to this configuration. As another form of the guide body 60, so-called lip channel steel can be used. When the lip groove steel is used as the guide body 60, the lip groove steel is attached in a state in which the opening portion is opened to the outside of the side surface of the upper die set 10. When the lip groove steel is used as the guide 60, only the 1 st guide piece 56 having a size matching that of the lip groove steel may be provided to the hanger jig 50. Thus, the hanging jig 50 capable of sliding and moving the guide body 60 in a state of being positioned in the up-down direction and the left-right direction can be provided at low cost. The guide 60 of the present utility model is not particularly limited as long as the hanging jig 50 can be slid along the guide 60 in the conveying direction of the workpiece.

In the present embodiment, the lower die 40 held in the lower die set 30 is hung by the hanging jig 50, but the present utility model is not limited to this configuration. After the fixation of the lower die 40 and the lower die set 30 is released, the operator may raise the lower die 40 from the lower die set 30 by a lower die lifter, not shown, housed in the lower die set 30, and then hang and hold the lower die 40 by the hanging jig 50.

In addition, various modifications of the above-described embodiments can be appropriately combined with each other.

Claims (7)

1. A press molding apparatus for press molding a workpiece into a predetermined shape by using an upper die attached to an upper die set and a lower die detachably attached to a lower die set,

guide bodies are arranged on left and right side surfaces of the upper die set relative to the conveying direction of the processed material along the conveying direction of the processed material,

a hanging jig capable of engaging with the lower die is attached to each guide body so as to be capable of sliding along the guide body and detachably.

2. The press-forming apparatus according to claim 1, wherein,

the hanging jig is provided with a 1 st component arranged on each guide body and a 2 nd component clamped with the lower die,

a long hole extending in the up-down direction is formed in the 1 st member, and a protrusion is provided upright in the 2 nd member, and the protrusion is capable of sliding and rotating along the long hole while entering the long hole.

3. The press-forming device according to claim 1 or 2, wherein,

a 1 st guide groove and a 2 nd guide groove are formed in each of the guide bodies, the 1 st guide groove extending in the conveying direction of the material to be processed and opening downward, the 2 nd guide groove extending in the conveying direction of the material to be processed and opening sideways,

the hanging jig is provided with a 1 st sliding body sliding in the 1 st guide groove and a 2 nd sliding body sliding in the 2 nd guide groove.

4. The press-forming device according to claim 1 or 2, wherein,

the lower die set is accommodated with a conveyor for feeding and discharging the lower die detached from the lower die set in a left-right direction with respect to a conveying direction of the workpiece so as to be slidable in the conveying direction of the workpiece.

5. The press-molding apparatus according to claim 3, wherein,

the lower die set is accommodated with a conveyor for feeding and discharging the lower die detached from the lower die set in a left-right direction with respect to a conveying direction of the workpiece so as to be slidable in the conveying direction of the workpiece.

6. The press-molding apparatus according to claim 4, wherein,

the height position of the upper end surface of the conveyor is lower than the height position of the lower surface side of the top plate of the processed material holding body, and the processed material holding body is vertically arranged on the lower die module to hold the bottom surface of the processed material.

7. The press-forming apparatus according to claim 5, wherein,

the height position of the upper end surface of the conveyor is lower than the height position of the lower surface side of the top plate of the processed material holding body, and the processed material holding body is vertically arranged on the lower die module to hold the bottom surface of the processed material.