JPH0321769Y2 - - Google Patents

Description

[Detailed description of the invention] <<Industrial application field>> This invention is suitable for carrying workpieces such as molds, large workpieces, workpiece pallets, etc. onto workbenches such as bolsters and tables of machine tools such as press machines and machining centers. The work loading/unloading device for machine tools, which is installed in a cantilevered manner on one side of the workbench for unloading, can be switched between a horizontal position when in use and a hanging position when not in use and folded. This technology not only allows for easy switching operations, but also eliminates falling accidents when used in a horizontal position.

<<Prior Art>> There is a conventional workpiece loading/unloading device of this type described in Japanese Patent Publication No. 55-6013, which is constructed as shown in FIG. 9.

That is, a bracket 50 is fixed to the bolster side L on the mold loading/unloading side of the bolster 2 of the press machine 1, and the conveyor rail 10 is fixed to the upper part of this bracket 50.
The rail base 10a is supported by a pivot pin 51 so as to be vertically swingable, and a stopper 52 is provided at the bottom of the bracket 50.

Further, an upper end portion 53a of the support rod 53 is pivotally supported in the middle of the transport rail 10 so as to be swingable back and forth.

Then, as shown in the solid line diagram, the transport rail 10
the lower end 53b of the support rod 53.
By placing the transport rail 10 on the stopper 52, the transport rail 10 is set in the horizontal use state X.

On the other hand, as shown in the two-dot chain diagram, by lowering the lower end 53b of the support rod 53 from the stopper 52 and lowering the conveyor rail 10 vertically, the conveyor rail 10 is folded into the unused folded state Y in a hanging position. will be included.

《The problem that the idea is trying to solve》 The above conventional example has the following problems.

(a) When switching the transport rail 10 between the horizontal use state Since it is necessary to place and unload the lower end portion 53b of 53 on the stopper 52, the transport rail 10
The load is heavy on the right hand, and the user must operate the support rod 53 with his left hand in a half-bent posture, making it difficult to switch.

(b) Since the tall bracket 50 is required and the support rod 53 extends long below the transport rail 10, the loading/unloading device must be large.

(c) The lower end 53b of the support rod 53 is the stopper 52
Even if the conveyor rail 10 is placed only halfway on the mold, the conveyor rail 10 will be in a horizontal position, making it difficult to notice this in advance. There is a danger that the lower end portion 53b of the rod 53 may come off the stopper 52 and fall, causing the transport rail 10 to fall from a horizontal position to a hanging position.

(d) Also, even if the lower end 53b of the support rod 53 is correctly placed on the stopper 52, the support rod 5
3 receives a forward external force due to catching on another object, etc., the lower end 53b of the support rod 53 may easily come off the stopper 52 and fall, causing the transport rail 10 to fall from a horizontal position to a hanging position. be.

The purpose of the present invention is to facilitate the switching operation between the horizontal use state of the transport rail and the folded state where no drooping is used, to downsize the loading/unloading device, and to eliminate the risk of the transport rail falling.

<<Means for solving the problems>> In order to achieve the above object, the present invention is constructed as follows.

For example, as shown in FIGS. 1 to 8, the rail base 10a of the conveyance rail 10 can be vertically swung by the rail support device 11 on the workbench side L on the workpiece loading/unloading side of the workbench 2 of the machine tool 1. In the workpiece loading/unloading device for a machine tool, the workpiece loading/unloading device for a machine tool is configured to be switchable between a working state X in which the transport rail 10 is cantilever-supported in a horizontal position and an unused folded state Y in which it is suspended in a hanging position. As a structure of the rail support device 11, an engagement support part A is provided at the upper part of the side surface L of the workbench, and a receiving part B and a hanging part C are provided at the lower part.
A rail base 10a of the transport rail 10 is provided.
An engaged supporting part D is provided in the upper part, and a received part E and a suspended part F are provided in the lower part, and the suspended part F can be moved up and down to the hanging part C. The transport rail 10 is fitted in a manner that prevents it from coming off, and the conveyor rail 10 is raised from a hanging position to a horizontal position, and its engaged support part D is engaged with and supported by the engagement support part A from above. By causing the receiving portion E to be received by the receiving portion B provided on the side surface L of the workbench, the transport rail 10 is held in the use state X in which it is supported cantilevered in a horizontal position, and the transport rail 1
The engaged support portion D of No. 0 is disengaged upward from the engagement support portion A, and the received portion E is separated upward from the receiving portion B, and the transport rail 10 is changed from a horizontal posture to a hanging posture. Fold down the suspended part F
is configured such that the conveyor rail 10 is held in the unused folded state Y in which it is suspended in a hanging position by suspending the transport rail 10 from a hanging part C provided on the side surface L of the workbench. It is.

<<Operation>> The operation of the present invention will be explained based on FIGS. 3a, b, and c.

The switching operation from the unused folded state Y to the used state X is performed in the following procedure.

Fig. a shows the unused folded state Y in which the transport rail 10 is folded into a hanging position, and the suspended part F is suspended by the suspended part C.

First, from the unused folded state Y in figure a, hold the transport rail 10 with both hands and lift it slightly upwards as shown by the two-dot chain arrow in figure b, then as shown by the solid line arrow in figure b. The robot is raised from a vertical position to a Z position. Then, the engaged support part D swings to the upper side of the engagement support part A from the lower front.

Then, when the transport rail 10 is lowered in parallel from the raised position Z in figure b, as shown in figure c, the engaged support part D is first engaged with and supported by the engagement support part A, Next, the received portion E is received by the receiving portion B, so that the conveyance rail 10 is held in a horizontal use state.

On the other hand, the transport rail 10 is folded from the used state X shown in FIG. c to the unused folded state Y shown in FIG.

<<Effects of the invention>> Since the present invention is constructed and operates as described above, it has the following effects.

(a) When switching the transport rail, the operator can support the transport rail with both hands and perform the switching operation, and the load of the transport rail is not applied to only one hand. Moreover, the operator who performs the switching operation does not have to take a half-bent posture in order to operate the support rod, unlike the conventional example. With the above, switching operation of the operating rail becomes easy.

(b) The structure for supporting the rail base of the transport rail on the side of the workbench is housed within the space occupied by the transport rail and the side of the workbench, and does not protrude significantly to the outside, so the loading/unloading device is compact. become.

(C) The transport rail cannot be used horizontally by supporting only one of the engaged support part and the received part; it can only be used horizontally by supporting both of the above. is obtained, so
There will be no more half-hearted support. Therefore, even if an impact is applied to the transport rail in use, such as when a mold is loaded, the risk of the transport rail falling from a horizontal position to a hanging position due to the impact is prevented.

(d) When the transport rail is used horizontally, even if it receives a forward external force due to something getting caught, the engaged support part is received from the front by the side of the workbench via the engagement support part. , it will not fall off the side of the workbench, and it will be prevented from falling from a horizontal position to a vertical position.

《Example》 Figures 1 to 8 show examples of the present invention, with Figure 1 being a longitudinal side view, Figure 2 being a side view of the press machine, and Figure 3 being a diagram showing the switching operation of the conveyor rail. 3a is a diagram of the folded state when not in use, FIG. 3b is a diagram of the folded state, FIG. 3c is a diagram of the used state, FIG. 4 is an exploded perspective view of the main parts, and FIG. is a view taken along the - line in FIG. 1, FIG. 6 is a sectional view taken along the - line in FIG. 1, and FIG. 7 is a view taken along the - line in FIG.
FIG. 8 is a sectional view taken along the - line in FIG. 7.

In FIG. 2, a rail base portion 10a of a conveyance rail 10 is supported by a rail support device 11 in a vertically swingable manner on the front side of a bolster 2 of a press machine 1.

When loading and unloading the mold, the transport rail 10 is switched to the horizontal use state X, and the U groove 2 of the bolster 2
A lift-type roller conveying device 4 built into the inside a projects above the bolster upper surface 2b. And mold 5
is carried onto the roller transport device 4 from the transport rail 10, the lower mold 5a is fixed to the bolster upper surface 2b with the clamp 6, and the upper mold 5b is fixed to the lower surface of the slide 3 with the clamp 7. The mold 5 is mounted on the press machine 1. on the other hand,
During press work, the conveyor rail 10 is switched to the unused folded state Y in a hanging position so as not to get in the way of the worker. After the press work is completed, the mold 5 is transferred to the press machine 1.
When carrying out the work, the transport rail 10 is switched to the use state X again.

The conveyance rail 10 is mainly shown in FIGS. 1 and 5.
It is configured as shown in the figure. That is, a frame-shaped rail main body 12 extending back and forth along the loading/unloading direction, a plurality of conveyance rollers 13 supported at predetermined intervals in the longitudinal direction on the upper part of the rail main body 12, and a front end portion 10b of the rail main body 12. It has a mold stopper device 14 provided in the mold. The rail main body 12 is constructed by fixing a pair of side plates 15, 15 to each other with a plurality of tie rods 16, and a conveyance roller 13 is inserted between these side plates 15, 15, and the top thereof is projected above the upper surface of the side plate 15. There is. A surface connecting the protruding ends of these conveying rollers 13 forms a mold carrying-in/out surface.

Further, the rail support device 11 is constructed as shown in FIGS. 4 to 8.

As mainly shown in FIG. 4, a support metal fitting 18 constituting a side surface L of the workbench on the mold loading/unloading side is fixed at a predetermined height on the front surface of the bolster 2 with positioning pins 19 and bolts 20. This support fitting 18 is formed in an inverted U-shape in plan view, and has both side walls 2.
A through hole 23 extending in the horizontal direction at the upper part of 2 and 22.
23 is formed. An engagement support wall 24 is provided protruding from the inner opening edge of each through hole 23 from the front part to the bottom part, and the engagement support wall 24 is provided on the upward and rearward peripheral surfaces of the engagement support wall 24. A is configured. Further, a catch 26 is fixed to the lower part of the rear wall 25 of the support fitting 18 with a plurality of bolts 27, and a catch B is formed on the front surface of the catch 26. Further, an elongated hole 28 extending in the vertical direction is laterally penetrated through the lower portion of each side wall 22, and a hanging portion C is formed on the circumferential surface of this elongated hole 28.

On the other hand, at the upper part of the rail base 10a of the transport rail 10, a supported pin 31 is projected outward from each side plate 15 in correspondence with the engagement support part A, and the outer peripheral surface of the supported pin 31 is protruded outward from each side plate 15. The engaged support portion D is configured. Furthermore, at the lower end of the rail base 10a, each side plate 15 is provided to protrude rearward in correspondence with the receiving part B, and a receiving part E is formed on the rear surface. Furthermore, in the lower part of the rail base 10a,
A suspended pin 33 is inserted across the side plates 15, 15 in correspondence with the suspended portion C. Both ends of the suspended pin 33 constitute a suspended portion F, which is vertically movable and fitted into the elongated hole 28 in a manner that prevents it from coming off.

In addition, in the above embodiment, the side surface L of the workbench is configured with the support metal fitting 18, but instead of this, the bolster 2
A workbench side surface L may be formed on the front surface of the workbench.

[Brief explanation of the drawing]

1 to 8 show an embodiment of the present invention, FIG. 1 is a longitudinal side view, FIG. 2 is a side view of the press machine, and FIG. 3 is a diagram showing the switching operation of the conveyor rail, Fig. 3a is a diagram of the folded state when not in use, Fig. 3b is a diagram of the unfolded state, Fig. 3c is a diagram of the used state, Fig. 4 is an exploded perspective view of the main parts, and Fig. 5 is a diagram of the figure 1. Fig. 6 is a sectional view taken along the - line of Fig. 1, Fig. 7 is a view taken along the - line of Fig. 4,
FIG. 8 is a sectional view taken along the - line in FIG. 7, and FIG. 9 is a view corresponding to FIG. 1 showing a conventional example. DESCRIPTION OF SYMBOLS 1...Machine tool (press machine), 2...Workbench (bolster), 10...Transportation rail, 10a...Rail base, 11...Rail support device, A...Engagement support part, B...Reception Stop part, C... Hanging part, D... Engaged support part, E... Received part, F... Hanging part,
L...Side surface of workbench, X...Used state, Y...Folded state when not in use.

Claims (1)

[Claims for Utility Model Registration] A rail base 10a of a conveyor rail 10 is supported on the side L of the workbench on the workpiece loading/unloading side of the workbench 2 of the machine tool 1 by a rail support device 11 so as to be vertically swingable.
In the workpiece loading/unloading device for a machine tool configured to be switchable between a use state X in which the transport rail 10 is cantilever-supported in a horizontal position and a non-use folded state Y in which the transport rail 10 is suspended in a hanging position, the rail support device 11 is As for the structure, an engagement support part A is provided at the upper part of the side surface L of the workbench, and a receiving part B and a hanging part C are provided at the lower part, and the upper part of the rail base 10a of the transport rail 10 is provided. At the same time, an engaged support part D is provided, and a received part E and a suspended part F are provided in the lower part, and this suspended part F is movable up and down to the suspension part C and is prevented from coming off. The conveyor rail 10 is raised from a hanging position to a horizontal position, and its engaged support part D is engaged with and supported by the engagement support part A from above, and its received part E is received by the receiving part B provided on the side surface L of the workbench, so that the transport rail 10 is held in the usage state X in which it is cantilever-supported in a horizontal position, and the engaged support of the transport rail 10 is The portion D is disengaged upward from the engagement support portion A, and the received portion E is separated upward from the receiving portion B, and the transport rail 10 is folded down from a horizontal position to a hanging position to remove the received portion. The hanging part F is attached to the side surface L of the workbench.
A method for loading and unloading workpieces of a machine tool characterized in that the transport rail 10 is held in an unused folded state Y in which the transport rail 10 is suspended in a hanging position by being suspended from a hanging part C provided in the machine tool. Device.