Mold conveyance trolley

1. A mold conveyance trolley comprising a trolley body and two pairs of wheels provided at the lower portion of the trolley body, and capable of propelling itself in a first direction via the two pairs of wheels and of conveying a mold, wherein:

the trolley body comprises, at both its side portions, first and second side plates disposed in vertical attitudes and oriented in a front and rear direction orthogonal to the first direction, first and second structural frames that are capable of providing rigidity in vertical planes to a front portion and a rear portion of the trolley body; and a plurality of plate members disposed in vertical attitudes and oriented in the front and rear direction, with intersecting the first and second structural frames; and wherein

each of the first and second structural frames comprises a plurality of linking members that are provided parallel to the first direction and disposed at different height positions and linked to the first and second side plates, and a plurality of steel pipe members that are fitted over each of the plurality of linking members and have a spacer function of regulating the gaps between the plurality of plate members through which the linking members penetrate, and gaps between the plate members and the first and second side plates.

2. The mold conveyance trolley according to claim 1 , wherein the plurality of plate members are a plurality of roller support plates that support a plurality of roller members for mold transfer.

3. The mold conveyance trolley according to claim 2 , wherein there are provided a horizontal base plate that connects a lower edge portions of the first and second side plates, two pairs of wheel support members to each of which a pair of front and rear wheels are installed and that are fixed to a lower surface of the horizontal base plate, and a plurality of coupling blocks that are set up on the horizontal base plate above the two pairs of wheel support members; and each of the first and second side plates is connected to the coupling blocks via the linking members and the steel pipe members, and the lower edge portions of the plurality of roller support plates are fixed to the horizontal base plate.

4. The mold conveyance trolley according to claim 3 , wherein

the first side plate, a roller support plate that opposes the first side plate with a predetermined gap therebetween, and a plurality of first roller members having lengths corresponding to the predetermined gap are constituting a first roller conveyor that is capable of transferring a mold for injection molding in the front and rear direction; and

the second side plate, a roller support plate that opposes the second side plate with a predetermined gap therebetween, and a plurality of first roller members are constituting a second roller conveyor that is capable of transferring the mold for injection molding in the front and rear direction.

5. The mold conveyance trolley according to claim 2 , wherein there are provided two pairs of wheel support members between the first and second side plates, to each of which a pair of front and rear wheels are installed, and a plurality of coupling blocks that are fixed above the two pairs of wheel support members; and wherein

the plurality of roller support plates comprise two pairs of roller support plates disposed in states to sandwich the coupling blocks; and

each of the two pairs of roller support plates is linked to the coupling block via the linking member and a plurality of steel pipe members.

6. The mold conveyance trolley according to claim 5 , wherein transfer of a mold for a press machine is enabled by two third roller conveyors, each of which comprises a plurality of second roller members fitted to the upper edge portions of a pair of roller support plates.

7. The mold conveyance trolley according to claim 1 , wherein each of the plurality of linking members is kept in a state in which tension is applied thereto.