JPS6110818Y2 - - Google Patents

Description

[Detailed description of the invention] Industrial field of application This invention relates to a press die changing device.

BACKGROUND ART FIG. 1 is a drawing showing a conventional example of a press die changing device, in which 1 is a press machine, 2 is a moving bolster for setting a press die 3 on the press machine, and 4 is a moving bolster 2. This is a moving rail for moving in the direction of the arrow.

Reference numeral 5 denotes a lifter device which consists of a roller 6 and a hydraulic cylinder 7 for moving the roller 6 up and down, and is installed on the upper part of the moving bolster 2. It is stored inside the moving bolster 2, and only when changing the mold,
The hydraulic cylinder 7 is extended to cause the roller 6 to protrude onto the upper surface of the moving bolster 2. 8 is a mold changing table installed on the side of the pulling position of the moving bolster 2 from the press machine 1;
9 is a carriage slidably mounted on the mold exchange table; 10 is an L-shaped hook installed at the tip of the carriage 9 for loading and unloading molds; this hook 10 is connected to an air cylinder 11 equipped on the carriage 9 It is designed to move up and down. Reference numeral 12 denotes a feed screw rotatably mounted on the mold changing table 8. The feed screw 12 is screwed into a carriage 9 slidably mounted on the mold changing table 8, and the feed screw 12 is connected to a motor (not shown). The carriage 9 is made to slide on the die changing table 8 by rotating it by the slider 1). Reference numeral 13 denotes a die exchange adapter on which a press die is placed, and a locking piece 15 having a through hole 14 that fits with the hook 10 described above is protruded from the side surface of this die exchange table adapter.

In order to exchange the press die set in the press machine 1, the press die 3 placed on the moving bolster 2 via the die exchange adapter 13 is transferred from the press machine 1 to the die exchange table 3.
A moving bolster 2 is pulled out from a press machine 1, and the moving bolster 2 is stopped on the side of a mold exchange table 8. Next, the hydraulic cylinder 7 of the lifter device 5 is extended to cause the roller 6 to protrude onto the surface of the moving bolster 2, and the hook 10, which is held movably up and down by an air cylinder 11 on a carriage 9 installed on the mold exchange table 8, is extended. is lowered, and the tip of the hook 10 is inserted into the through hole 14 of the locking piece 15 protruding from the side of the mold exchange adapter 13. In this state, the feed screw 12 is rotated by a motor (not shown) and the carriage 9 screwed with the feed screw 12 is moved in the direction of the arrow, thereby connecting the carriage 9 and the hook 10 via the hook 10. A mold exchange adapter 13 on which a press mold 3 is mounted is transferred from a moving bolster 2 onto a mold exchange table 8.

Further, the press mold that has been changed on the mold change table 8 is set into the press machine 1 by performing the reverse operation to that described above.

Problems to be Solved by the Invention However, as described above, the hook 10 attached to the carriage 9 cannot be engaged with the locking piece 15 provided on the mold exchange adapter 13 by the air cylinder 11 installed on the carriage 9. If this was done, the carriage 9 would move on the mold exchange table 8, which would make piping for supplying air to the air cylinder 11 installed on the carriage 9 difficult, which would complicate the overall structure of the device. There were flaws.

Also, in this way, the hook 10 is attached to the air cylinder 11.
If the hook 10 is fitted into the through hole 14 formed in the locking piece 15 by moving it up and down with the lever, the hook 10 must be moved in and out of the through hole 14 each time the press mold is loaded or unloaded. However, it also had the disadvantage that the mold replacement work was complicated.

In view of the above-mentioned drawbacks of the conventional method, this idea is to install a mold changing table on the side of the pulling out position of the moving bolster from the press machine for loading and unloading press molds into the press machine, and to connect the mold changing table and the moving bolster. When the press mold is configured to be movable, the hook attached to the carriage can be moved in and out of the locking piece provided on the mold exchange adapter without using a special drive device such as an air cylinder. The object of the present invention is to provide a press die changing device that has the following features.

Means for Solving the Problem This invention provides a locking piece A protruding from the mold exchange table 8 side of the mold exchange adapter 13 with a groove B with an open end extending in the moving direction of the moving bolster 2. Further, an L-shaped hook C that can engage with the groove B at the tip is fixed to the carriage 9 which is slidably mounted on the mold changing table, and the carriage 9 is attached to the moving bolster 2. A stopper D for positioning the carry-in end position of the press die 3 to be carried in is provided, and a stopper D is provided for positioning the carry-in end position of the press die 3 of the carriage 9 on the die changing table 8, that is, a position slightly retreating from the press die carry-in end position of the carriage 9, that is, the hook C and the groove B. The present invention is characterized in that a position detector E is provided to detect the position of the carriage 9 at a position that prevents interference between the carriages 9 and 9.

Embodiments The structure of this invention will be described below with reference to embodiments shown in the drawings. In the drawings, the same reference numerals as in FIGS. 1 and 2 indicate the same constituent members.

In FIGS. 3 and 4, A is a locking piece provided on the mold changing table 8 of the mold changing adapter 13 on which the press mold 3 is placed. A groove B is provided that extends in the moving direction of the moving bolster 2, which moves in the direction of the arrow along the rail 4 with the adapter 13 mounted thereon. The depth of this groove B is such that the tip of the hook C does not interfere with the groove B when the mold exchange adapter 13 is raised by the lifter 5 while the hook C, which will be described later, is engaged with the groove B. The groove width L of the groove B is set to be larger than the width l of the hook C. Note that both ends of the groove B are open.
C is an L-shaped hook fixed to the carriage 9 which is slidably mounted on the mold changing table 8, and this hook C is used to move the carriage 9 onto the mold changing table 8.
When placed at the end (left side in the diagram) of the hook C
The locking piece A of the mold exchange adapter 13 moves while the tip thereof is placed on the moving bolster 2.
It is configured so that it is located on the moving path of the groove B formed in . In other words, the groove B and the hook C are
As long as it is viewed from a plane perpendicular to the moving direction of the moving bolster 2 (FIG. 4), they are always in an engaged positional relationship.

D is a stopper provided on the moving bolster 2 to ensure positioning when transferring the mold exchange adapter 13 from the mold exchange table 8 to the moving bolster 2. For the movement stroke of the carriage 9, move the mold exchange adapter 13 to the stopper D.
Set the stroke so that it can be pressed.

E is a limit switch for detecting the position of the carriage 9. This limit switch E is used to detect the retracted position of the carriage 9 when the carriage 9 is slid in the direction of the arrow to transfer the mold exchange adapter 13 from the mold exchange table 8 to the moving bolster 2, and then the carriage 9 is slightly retracted to prevent interference between the hook C and the groove B.

In the above configuration, in order to transfer the press die 3 placed on the moving bolster 2 via the die exchange adapter 13 to the die exchange table 8 by the press die exchange device according to the invention, the moving bolster 2 is moved to the press machine 1. If you pull it out and position the moving bolster 2 to the side of the mold exchange table 8,
The hook C fixed on the carriage 9 is automatically positioned in the groove B provided in the locking piece A of the mold exchange adapter 13. Therefore, the hook C can be engaged in the groove B of the locking piece A without using a device such as an air cylinder for moving the hook C up and down. After that, the mold exchange adapter 13 is raised by the lifter 5, the feed screw 12 is rotated by the motor, and the carriage 9 is slid in the direction of the arrow _.
contacts the wall surface _B1 of the groove B, and the mold exchange adapter 13 on which the press mold 3 is mounted can be transferred from the moving bolster 2 onto the mold exchange table 8.

In addition, when transferring the press mold 3 placed on the mold exchange table 8 via the mold exchange adapter 13 to the moving bolster 2 located on the side of the mold exchange table 8, move the carriage 9 in the direction of the arrow. By sliding and pressing the side surface C ₂ of the hook C against the side wall B ₂ of the groove B, the mold exchange adapter 13 on which the press mold 3 is mounted is transferred onto the moving bolster 2. At this time, positioning is performed by bringing the mold exchange adapter 13 into contact with a stopper D provided on the moving bolster 2. After that, reverse the motor, move the carriage 9 slightly backward until the limit switch E is activated, and then press the side C ₂ of the hook C.
is separated from the side wall _B2 of the groove B, and the lifter device 5 is lowered. After that, simply slide the moving bolster 2 in the direction of the arrow, and the hook C will be automatically removed from the groove B.

In addition, when the press mold 3 is directly moved without using the mold exchange adapter 13, the locking piece A may be integrally provided on the side of the press mold 3. Alternatively, the locking piece A having the groove B may be provided on the carriage 9 side, and the hook C may be provided on the mold exchange adapter 13 or the press mold 3 side.

Effects of the invention As explained above, this invention installs a mold changing table on the side of the pulling out position of the moving bolster from the press machine to carry press molds into and out of the press machine. In a press mold changing device configured to move a press mold between moving bolsters, a locking piece protruding from the mold changing table side of the mold changing adapter has an open end extending in the moving direction of the moving bolster. In addition, an L-shaped hook that can be engaged with the groove at the tip is fixed to the carriage that is slidably mounted on the mold changing table, and the moving bolster is provided with an L-shaped hook that can be engaged with the groove. A stopper is provided for positioning the carry-in end position of the press die to be carried in, and a position on the die changing table is slightly set back from the press die carry-in end position of the carriage, that is, a position that prevents interference between the hook and the groove. Since we installed a position detector to detect the position of the carriage,
There is no need to use a drive device such as an air cylinder to engage and disengage the groove of the locking piece of the die exchange adapter with the hook of the carriage, making the structure of the press die exchange device simple and inexpensive. By providing a stopper for positioning the loading end position of the press mold on the bolster, the position of the press mold on the moving bolster can be easily and accurately set, and the position detector of the carriage can be placed on the mold changing table at the above-mentioned position. Because the press mold on the moving bolster is placed in the press machine, the carriage hook does not interfere with the press mold, and when replacing the press mold, the engagement position between the hook and the groove can be set accurately. This makes it possible to facilitate mold exchange work.

[Brief explanation of the drawing]

1 and 2 are a plan view and a sectional view showing a conventional example of a press die changing device, and FIGS. 3 and 4 are a plan view and a sectional view showing a press die changing device according to this invention. A... Locking piece, B... Concave groove, C... Hook, 1
...Press machine, 2...Moving bolster,
3...press mold, 8...mold exchange stand, 9...carriage, 13...mold exchange adapter.

Claims (1)

[Scope of utility model registration request] A mold changing table is installed on the side of the moving bolster pull-out position from the press machine for loading and unloading the press mold into the press machine, and the press mold can be moved between the mold changing table and the moving bolster. In the press mold changing device configured, a groove with an open end extending in the moving direction of the moving bolster is provided in the locking piece protruding from the mold changing table side of the mold changing adapter, and a groove on the mold changing table side is provided. An L-shaped hook that can be engaged with the above-mentioned concave groove is fixed at the tip of the carriage that is slidably attached to the moving bolster, and is used to position the carrying-in end position of the press mold carried in by the above-mentioned carriage. In addition to being equipped with a stopper, a position detector is provided on the die changing table to detect the position of the carriage at a position slightly set back from the press die loading end position of the carriage, that is, at a position that prevents interference between the hook and the groove. A press-type exchange device characterized by: