JPH04224032A - Conveyor device for carrying die - Google Patents

Abstract

PURPOSE:To efficiently carry a die into/out from plural pressing apparatuses and to improve safety and workability of pressing work. CONSTITUTION:In pressing line, plural pressing apparatuses 1 are set. In the front of the individual pressing apparatus 1, the carrying conveyor 2 is set. Plural carrying conveyors 2 are set along the pressing line. The carrying conveyor 2 arranges a first space S1 for laying the die 5 to be exchanged, which is separated from the pressing apparatus 1, and a second space S2 for laying the die 6 for exchanging. The carrying conveyor 2 is arranged as rotation able to rotational force transmitting device 3 fitted to the front edge part 1a in the pressing apparatus 1 and stood or hung down at the time of being empty condition, which the die 5 to be exchanged and the die 6 for exchanging are not laid on the carrying conveyor 2.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mold transport conveyor device for transporting molds used in a press machine.

0002

2. Description of the Related Art Conventionally, mold replacement work for press machines has been carried out using hand carts (hereinafter simply referred to as "carts").

That is, first, a replacement mold is taken out from the mold storage and placed on a trolley, and then this trolley is placed horizontally in front of the press machine. Thereafter, the mold to be replaced is removed from the press device and placed on a trolley, and the replacement mold is attached to the press device. Finally, the mold to be replaced is placed on a trolley and transported to a mold storage, and the mold to be replaced is stored in the mold storage to perform the mold exchange.

0004

[Problems to be Solved by the Invention] However, in the conventional mold replacement work using a trolley, when replacing molds of multiple press devices (for example, a press line), the above replacement work is carried out using a press. This must be done for the number of devices. Therefore, it takes a lot of time to move the cart back and forth from the mold storage to the press device, resulting in a problem that the operating efficiency of the press device is reduced. It has been proposed that rails be laid on the front floor surfaces of multiple press machines, and a trolley on which molds are placed is transported on these rails to perform mold replacement work, but in the end,
The cart had to be reciprocated between the mold storage and the press apparatus by the number of press apparatuses, and the operating efficiency of the press could not be effectively improved.

The present invention has been made against the background of the above-mentioned conventional technical problems, and makes it possible to perform mold replacement work in a short time, thereby making it possible to improve the operating efficiency of a press machine and to improve the safety of press work. The purpose of the present invention is to provide a mold conveyor device that contributes to this.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a method in which each press is installed in front of a die to be replaced, which is attached to a plurality of press devices arranged in parallel at appropriate intervals. It has a first space in which a replacement die to be removed from the apparatus is placed, and a second space in which a replacement die to be attached to each press apparatus is placed at a position adjacent to the first space at an appropriate interval. 2 spaces, and further has a mold loading/unloading section at one end in the direction in which the replaced or replacement molds are transported, and this transport conveyor is provided at the front of each press device. It is rotatably supported on the rotation shaft of the rotational force transmission device, and the first space and the second space are
The feature is that it stands up or hangs down when the space is empty.

[0007]

[Operation] After placing multiple replacement molds to be replaced on the mold loading/unloading section provided at one end of the conveyor, each replacement mold is transported and placed in the second space of the conveyor. let Next, after stopping each press device, the molds to be replaced are removed from each press device and transferred to the first space of the conveyor. Next, the replacement mold and the replacement mold are transported to position each replacement mold in its first space. Next, each replacement mold is attached to a press device. After the installation of the replacement mold is completed, the replacement mold is transported to the mold loading/unloading section.

[0008] The conveyor is rotatably supported by a rotational force transmitting device provided in the press device, and is held in a horizontal state during mold replacement work, and when there is no press work or when the press is in operation. When mold replacement is not required, that is, when there is no mold on the conveyor and the conveyor is empty, the conveyor is lowered or raised.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS. 1 to 10. In this embodiment, as shown in FIG. 1, a case is taken as an example in which the mold conveyor device K according to the present invention is installed in three press devices 1 arranged in parallel in the horizontal direction. First, the press device will be explained.

As shown in FIG. 2, the press apparatus 1 is provided with a pair of lower mold setting tables 12, 12, which are arranged on the upper surface of a bolster 11, facing each other in the left and right directions. First roller conveyors 13, 13 for conveying molds extending in the front-rear direction are provided on the opposing surfaces of the lower mold setting tables 12, 12, respectively. Each first roller conveyor 13 is provided so that it can be raised and lowered by a hydraulic device (not shown), and when lowered (when lower molds are set), it is located below (or flush with) the upper surface of lower mold setting table 12. There is. In addition, in the figure, the code 1
4 is a clamp for attaching the lower die to the lower die set table, and 15 is a press frame.

Next, the mold conveyor device according to the present invention will be explained. The mold conveyor device K is shown in FIG.
As shown in FIG. 2, three transport conveyors 2 are arranged in a straight line on the front side of each press apparatus 1, and a rotational force transmission device that connects each transport conveyor 2 and each press apparatus 1, respectively. 3, and a loading/unloading conveyor 4 (mold loading/unloading section) installed adjacent to the conveyor 2 located on the far right side.
It is equipped with

[0012] The conveyor 2 has a long rectangular frame 2 consisting of both short end side parts 21b, 21b which form a rectangle with long side parts 21a, 21a facing each other in the longitudinal direction.
1, and a plurality of rollers 22 rotatably supported on both sides 21a, 21a of this rectangular frame 21.

The rectangular frame 21 is formed such that one side located on the right side in FIG. 3 projects upwardly from the other side. As a result, the mold is transferred to the conveyor 2 while the mold is being transported.
This prevents it from falling off. Also, rectangular frame 2
A bottom plate 23 is formed at the bottom of 1. Both end side parts 21
A rotating shaft 30 extending along both side portions 21a, 21a is welded to b, 21b by passing through the side portions 21b, 21b. The rectangular frame 21 is supported by a rotating shaft 30 that is supported by a rotational force transmitting device 3, which will be described later, and a bearing section 32, which will be described later.

As shown in FIG. 2, the plurality of rollers 22 are
Both side parts 21a, 2 of the rectangular frame 21 are spaced apart from each other at equal intervals except for the part where the rotational force transmission device 3 is located.
It is rotatably supported by 1a. As shown in FIG. 3, the upper end surface 22a of each roller 22 is installed so as to be substantially flush with the upper end surface 12a of the lower die set table 12. Each roller 22 can be automatically conveyed by a drive device (for example, a chain drive, etc.) not shown.

In FIG. 2, a detection switch (not shown) (for example, a phototube switch) is provided near the left end 26 of each conveyor 2.

[0016] The detection switch is connected to each replacement mold 6, which will be described later.
is activated to stop the driving of each transport conveyor 2 when each is located in the second space S2. Thereby, each replacement mold 6 is placed in the second space S2.

Each conveyor 2 configured as described above is connected to the press device 1 via a rotating shaft 30 connected to a rotational force transmitting device 3.
are connected to each other.

The rotational force transmission device 3 is composed of a motor M and a worm reducer W, and is fixed to a base plate 31 provided on one side of the bolster 11, as shown in FIG. A motor M integrated with a worm reducer W is fixed to the upper surface of the base plate 31. On the other hand, in FIG. 4, a bearing portion 32 is fixed to the upper surface of a base plate 33 provided on the other side of the bolster 11. The rotation shaft 30 is connected to this bearing part 32, one end side part 21b of the rectangular frame 21, and the worm reducer W.
, is inserted into the other end side portion 21b of the rectangular frame 21. That is, in the worm reducer W, a midway portion of the rotating shaft 30 is coupled to an output shaft (not shown), and the bearing portion 32 is connected to the rotating shaft 3.
It supports the end of 0. The rotation shaft 30 has its both ends connected to the short sides 21b and 2 of the rectangular frame 21.
1b, one end side part 21 of the rectangular frame 21
The extending end portion protruding from b is rotatably supported by a bearing portion 32. In this way, the rotation shaft 30 extends in the longitudinal direction of the rectangular frame 21 so as to weave through the gaps between the bottom plate 23 and the plurality of rollers 22, as shown in FIG.

In the above configuration, the upper end surface 22a of each roller 22 constituting the transport conveyor 2 and the upper end surface 12a of the lower die setting table 12 are substantially flush with each other. When the rotational force transmission device 3 is driven to rotate the rotating shaft 30 clockwise from this state, the conveyor 2 rotates approximately 90 degrees clockwise about the rotating shaft 30, as shown in FIG. It rotates and hangs downward. Thereby, when the conveyor 2 is in an empty state where no molds are placed, it is possible to ensure the workability of the operator on the front side of the press apparatus 1 during operations other than mold replacement work.

Furthermore, when the rotational force transmission device is driven to rotate the rotating shaft 30 in the counterclockwise direction while the conveyor 2 is hanging down, the conveyor 2 rotates around the rotating shaft 30 as shown in FIG. 180 counterclockwise around
It rotates a degree and stands almost vertically upward. This provides a safety barrier while the press equipment is in operation.
The safety of the press operator on the front side of the press apparatus 1 can be ensured.

When the conveyor 2 is connected to the press device 1, as shown in FIG.
A right end portion of the press device 1 faces the front surface of the press device 1, and a left end portion of the press device 1 projects leftward from the left side surface of the press device 1. A gap C between the rollers 22 is located on the extension line in front of the first roller conveyors 13, 13 at the right end of the conveyor 2.
In the gap C, a second roller conveyor 27 for transporting the molds,
27 are provided. This second roller conveyor 27,2
Like the first roller conveyor 13, roller conveyor 7 is provided to be movable up and down by a hydraulic device (not shown), and is located below (or flush with) the upper end surface 22a of each roller 22 when descending. In the conveyor 2 including the second roller conveyors 27, 27, in a location located in front of the mold (double-dashed line in FIG. 2) attached to the press device 1,
A second space S where the replacement mold 6 is placed is adjacent to the first space S1 where the replacement mold 5 is placed.
2 is formed. Note that a slight gap is formed between each conveyor 2.

The loading/unloading conveyor 4 is the second roller conveyor 2.
7 is not provided, there is no need to separate the rollers 22 by the rotational force transmission device 3, and the rotational force transmission device 3 does not need to be installed on the press device 1 and can be attached to the floor via a frame (not shown). It has the same structure as the conveyor 2 except that it is installed on a surface. However, loading/unloading conveyor 4
has its right end extending to a mold storage (not shown).

Next, the mold replacement work will be explained. First, after the press work has been completed, the conveyor 2, which is in an upright state, is moved by the rotational force transmission device 3 as shown in FIG.
Upper end surface 22a of each roller 22 constituting the conveyor 2
The rotation of the conveyor 2 is adjusted so that the upper end surface 12a of the lower die set table 12 and the upper end surface 12a of the lower die set table 12 are substantially flush with each other.

Next, the replacement molds 6 taken out from the mold storage (not shown) are sequentially placed on the loading/unloading conveyor 4 in a driven state. In this case, it goes without saying that the replacement molds 6 to be used are sequentially placed on the leftmost press device 1 in FIG.

The replacement molds 6 placed one after another on the loading/unloading conveyor 4 are automatically transported toward the second space S2. When each of the replacement molds 6 is located in the second space S2, each detection switch is activated in sequence, and each of the conveyors 2
Stops driving. As a result, each replacement mold 6 is placed in the second space S2, as shown in FIG. 6.

Next, after each press device 1 is stopped, the clamps 14 of each lower die set table 12 are removed and the lower die 4 to be replaced is removed.
Cancel the set of 1. Thereafter, the rams (not shown) of each press device 1 are lowered, and the lower surfaces of the upper molds 42 to be replaced set in each ram are placed on the upper surfaces of the lower molds 41 to be replaced (Fig. (See 3). Next, the upper die 42 for each replacement and the ram are released from being set. Next, each first
The roller conveyor 13 and the second roller conveyor 27 are raised. At this time, the upper end surfaces of the first roller conveyor 13 and the second roller conveyor 27 are flush with each other.

As each first roller conveyor 13 rises, each mold 5 to be replaced, with the upper mold 52 placed on the lower mold 51, is lifted upward. At this time, the upper end surface of the first roller conveyor 13 is connected to the upper end surface 12 of the lower die set table 12.
It is located above point a and supports the mold 5 to be replaced. From this state, each mold 5 to be replaced is moved in the direction of the first space S1 and positioned in each of the first spaces S1. At this time, the upper end surface of the first roller conveyor 27
The mold 5 to be replaced is supported by being located above the upper end surface 22a of the mold 5.

Next, as shown in FIG. 7, only the second roller conveyors 27 are lowered to place the molds 5 to be replaced in the first spaces S1. Next, conveyor 2
are reversely driven to create each first space S1 and second space S
The mold 5 to be replaced and the mold 6 for replacement placed on the molds 2 and 2 are moved in the direction of the carry-in/out conveyor 4. Then, when each replacement mold 6 is located in the first space S1, the driving of each conveyor 2 is stopped. As a result, each replacement mold 6 is placed in the first space S1 as shown in FIG. 8.

Next, each second roller conveyor 27 is raised again to lift each replacement mold 6 upward. and,
Each replacement mold 6 is moved on the second roller conveyor 27 and the first roller conveyor and positioned on each lower mold setting table 12 (see FIG. 9). Thereafter, the replacement mold 6 is attached to the press apparatus 1 in the reverse manner to the method used when removing the replaceable mold 5 from the press apparatus 1.

Next, after lowering the second roller conveyor 27, each conveyor 2 is reversely driven again to automatically convey each die 5 to be replaced in the direction of the loading/unloading conveyor 4. The molds 5 to be replaced that have reached the carry-in/out conveyor 4 are sequentially stored in the mold storage, and the mold replacement work is completed.

Finally, as shown in FIG. 5, if it becomes necessary to work on the front side of the press machine 1 after the mold replacement work is completed, the rotational force transmission device 3 is driven so that the conveyor 2 is It is rotated approximately 90 degrees clockwise about the rotation shaft 30 to hang downward. As a result, the press device 1
A work space is created on the front side.

The present invention is not limited to the above-mentioned embodiments, but can be modified without departing from the gist of the present invention. For example, in this embodiment, a case is taken in which the conveyors 2 constituting the mold conveyor device K are linearly arranged on the front side of a plurality of press devices 1 arranged in parallel in the horizontal direction. However, it is not always necessary to do this, and depending on the installation state of the plurality of press devices 1, it is also possible to arrange each conveyor 2 in a curved shape.

Furthermore, in this embodiment, the conveyor 2 and conveyor 4 constituting the mold conveyor device K are provided with drive devices to enable automatic conveyance of the molds.
It is not necessarily necessary to provide a drive device. When a drive device is not provided, the molds placed on the conveyor 2 and the carry-in/out conveyor 4 are pushed by hand and conveyed.

[0034]

As explained above, according to the mold conveyor device of the present invention, in front of the molds to be replaced each mounted on a plurality of press devices arranged in parallel at appropriate intervals, It has a first space in which the replacement mold removed from each press device is placed, and a replacement mold to be attached to each press device is placed in a position adjacent to the first space at an appropriate interval. The conveyor has a second space in which the molds to be replaced or replacements are placed, and a mold carry-in/out section at one end in the direction of conveying the molds to be replaced or replaced. It is rotatably supported by the rotation shaft of the rotational force transmission device provided at the front, and stands up or hangs down when the first and second spaces are empty, making it easier to replace the mold. Not only can this be done in a short time, it can improve the operating efficiency of the press machine, but when the press machine is in operation, the conveyor acts as a safety fence to ensure the safety of the press workers, and when the press machine is stopped, the press machine Ensure a comfortable working environment for workers in front of the equipment.

[Brief explanation of the drawing]

FIG. 1 is a plan view showing a mold conveyor device according to the present invention installed in a plurality of press devices.

[Figure 2] Detailed view of part of Figure 1

[Figure 3] Figure 2 shows the view from the arrow III.

[Figure 4] View from the IV arrow in Figure 3

[Figure 5] Diagram showing the state in which the conveyor is suspended downward

[
Figure 6: Plan view showing the replacement mold placed in the second space

[Fig. 7] A plan view showing a state in which the mold to be replaced is placed in the first space.

[Fig. 8] Plan view showing a state in which the replacement mold is placed in the first space.

[Fig. 9] Plan view showing the state in which the replacement mold is attached to the press device.

[Fig. 10] A diagram showing the state in which the conveyor is erected upward.

[Explanation of symbols]

1　Press device 2 Conveyor 3. Rotational force transmission device 5 Mold to be replaced 6 Replacement mold 30 Rotation axis S1 1st space S2 2nd space

Claims (1)

[Claims] Claim 1: In front of the molds 5 to be replaced, each of which is attached to a plurality of press devices 1 arranged in parallel at appropriate intervals,
It has a first space S1 in which the mold 5 to be replaced that has been removed from each press device 1 is placed, and the replacement is installed in each press device 1 at a position adjacent to the first space S1 at an appropriate interval. Second space S where the mold 6 is placed
2, and the molds 5 and 6 for replacement or replacement.
The conveyor 2 is comprised of a conveyor 2 having a mold loading/unloading section 4 at one end in the conveying direction. 1. A mold conveyor device, which is rotatably supported by a mold transport conveyor device, and is configured to stand up or hang down when the first space S1 and the second space S2 are empty.