JPH0718419Y2 - Conveyor device in press machine - Google Patents

Description

TECHNICAL FIELD The present invention relates to a conveying device in a press machine.

2. Description of the Related Art Conventionally, for example, in a transfer press machine, a transfer device that transfers a blank material along a pressing process is provided. This conveying device includes a pair of left and right elevating frames arranged on both sides of the press main body, a conveying member supported on each of the elevating frames through a carriage so as to be capable of reciprocating in the blank material conveying direction, and A plurality of blank material holders mounted between the pair of left and right conveying members at predetermined intervals, a moving device that reciprocates the carriage in the blank material conveying direction, and the elevating frame as a blank material pressing position. It is composed of an elevating device that elevates and lowers to and from the transport position. This elevating device is a cylinder device (for example, a hydraulic cylinder) that elevates and lowers a plurality of elevating rods arranged at predetermined intervals along a transport path and elevates and lowers each of these elevating rods synchronously via a rack and pinion mechanism. It consisted of and.

Further, among the elevating rods, those corresponding to the pulling-out position of the bolster truck are provided with a separate lifting / lowering cylinder device so as not to get in the way when pulling out. Therefore, at the time of exchanging the mold, the lifting cylinder device lowers the upper end of a predetermined lifting rod so that the upper end of the predetermined lifting rod is located below the pulling surface of the bolster truck.

However, according to the above-described conventional configuration, when the mold is replaced, that is, when the bolster cart is pulled out, the predetermined lifting rod is lowered by the lifting cylinder device as a whole. Since it takes time, there is a problem that it is not possible to perform mold exchange more quickly.

Then, this invention aims at providing the conveying apparatus in the press machine which can solve the said subject.

Means for Solving the Problems In order to solve the above problems, a conveying device in a press machine of the present invention includes a pair of left and right elevating frames arranged on both sides of the press machine body and a carriage on each of the elevating frames. A reciprocating member for reciprocating in the blank material conveying direction, a moving device for reciprocating the carriage in the blank material conveying direction, and the elevating frame between the blank material pressing position and the blank material conveying position. In a conveyor having an elevating device for elevating, an elevating rod having a plurality of the elevating devices arranged at predetermined intervals along a conveyance path of a blank material, and an elevating driving device for elevating and lowering each of these elevating rods Of these lifting rods, the lifting rod corresponding to the pulling-out position of the bolster cart is divided into two parts, and the divided upper part. The lifting rod is held on the bolster truck side so that it can be raised and lowered, and the divided lower lifting rod is provided with a cylinder device that raises and lowers the upper lifting rod at a predetermined height.

Operation In the above configuration, when exchanging the mold, first, the elevating drive device raises all the elevating rods to move the elevating frame to a position where it does not interfere with the drawing of the mold. Next, from this state, only the upper lifting rod is lowered by the cylinder device until its flange portion comes into contact with the bush, and is held on the bolster truck side. Then, in this state, if the bolster truck is pulled out from the press body, the working time can be shortened as compared with the conventional case where the entire lifting rod is lowered below the pulling surface of the bolster truck.

Embodiment An embodiment of the present invention will be described below with reference to FIGS. 1 and 2.

Since the gist of the present invention is an elevating device in a carrying device, this part will be described.

In FIG. 1, reference numeral 1 is an elevating frame of a conveying device arranged on both sides of a press machine body, which can be moved up and down between a press position and a conveying position of a blank material by an elevating device 2. The lifting device 2 is the lifting frame 1 described above.
A plurality of lifting rods (only one is shown) 3 that directly support
It is composed of a main cylinder device (not shown, which is an example of a lifting drive device) for lifting and lowering each of the lifting rods 3 via a rack and pinion mechanism. That is, rack teeth 4 are formed at the lower end of each elevating rod 3, pinions 5 that mesh with the rack teeth 4 are arranged on the sides of the press machine body, and rack teeth 7 that mesh with the pinions 5 are provided. The rack body 6 in which is formed is arranged in the horizontal direction, and the rack body 6 can be moved in the front-rear direction by the main cylinder device. Further, the lifting rod 3 corresponding to the pulling position of the bolster truck 9 on which the die 8 is placed is vertically divided into two parts, and the upper lifting rod 3a is attached to the bolster truck 9 side via the bush 10. It is directly held up and down. That is,
In the middle of the upper lifting rod 3a, a flange portion 11 that can contact the upper end surface of the bush 10 is formed, and at the dividing portion of the lifting rod 3, the lifting rod 3 is lowered to push the flange portion 11 into a bush. The lower end surface of the upper lifting bar 3a is positioned below the pull-out surface a of the bolster truck 9 when brought into contact with 10. And the lower lift bar further divided
An auxiliary cylinder device 12 is interposed in the middle of 3b, and an upper portion 3c of the auxiliary cylinder device 12 can be moved up and down with the lower lift bar 3b being stopped. In addition, 13 is a lower lift bar provided on the press body side.
It is a guide member for the upper portion 3c of 3b.

In the above structure, when the blank material is conveyed, as shown in FIG. 1, the auxiliary cylinder device 12 is in a stretched state,
That is, when the piston 12a is raised, the rack body 6 is horizontally reciprocated by the operation of the main cylinder device, so that all the lifting rods 3 are simultaneously raised and lowered.

Next, when exchanging the die 8, first, the main cylinder device raises all the elevating rods 3 and moves the elevating frame 1 to a position where it does not interfere with the drawing of the die 8. Next, the piston 12a of the auxiliary cylinder device 12 is lowered from this state, and the upper lifting rod 3a is lowered until the flange portion 11 thereof comes into contact with the bush 10. That is, the upper lifting rod 3a is held on the bolster truck 9 side. Then, in this state, the bolster cart 9 may be pulled out from the press body.

As described above, when the mold 8 is replaced, the auxiliary cylinder device 12 provided in the middle of the lower lifting rod 3b is actuated to slightly lower the upper lifting rod 3a and hold it on the bolster truck 9 side. As a result, the working time can be shortened as compared with the conventional case where the entire lifting bar is moved below the drawing surface of the bolster truck.

By the way, in the above embodiment, the auxiliary cylinder device is interposed in the middle of the lower lifting rod, but it may be provided at the upper end of the lower lifting rod, for example.

As described above, according to the configuration of the present invention, when the mold is replaced,
By operating the auxiliary cylinder device provided on the lower lifting rod, only the upper lifting rod is lowered a little and held on the bolster truck side. The working time can be shortened as compared with the case of moving it below the plane.

[Brief description of drawings]

The drawings show one embodiment of the present invention. FIG. 1 is a side view of a partly cutaway essential part, and FIG. 2 is a side view of the partly cutaway essential part during operation. 1 ... Lifting frame, 2 ... Lifting device, 3 ... Lifting rod,
3a …… upper lift bar, 3b …… lower lift bar, 8 …… mold, 9
…… Bolster dolly, 10 …… Bush, 11 …… Flange part, 12 …… Auxiliary cylinder device, 12a …… Piston.

Claims (1)

[Scope of utility model registration request] 1. A pair of left and right elevating frames arranged on both sides of a press body, and a conveying member provided on each of the elevating frames so as to be reciprocally movable in a conveying direction of a blank material through a carriage. A transport device having a moving device that reciprocates a carriage in a blank material transport direction and a lifting device that lifts and lowers the lifting frame between a press position and a transport position of the blank material, wherein the lifting device transports the blank material. It is composed of a plurality of lifting rods arranged at predetermined intervals along the path and a lifting drive device that raises and lowers these lifting rods in synchronization with each other, and corresponds to the pulling position of the bolster truck among these lifting rods. The lift bar is vertically divided into two parts, and the divided upper lift bar is held on the bolster truck side so that it can be moved up and down. In Fubo, conveying device in a press machine, characterized in that a cylinder device for raising and lowering with the upper lift rod at a predetermined height.