Conveyance chain, tool change system and multiple link plates

A conveyance chain comprising:

• a plurality of link plates that are alternately coupled and that convey a plurality of tool pots, each of the plurality of tool pots holding a respective tool, wherein
• the plurality of link plates includes first inner link plates and first outer link plates, each of the first inner link plates and each of the first outer link plates including a respective rotation stop hole that stops a rotation of a given tool pot of the plurality of tool pots, and each of the first inner link plates and each of the first outer link plates further including a respective rotation permit hole that is located upstream from the corresponding rotation stop hole with respect to a conveyance direction of the conveyance chain, each of the respective rotation permit holes permitting a rotation of a given tool pot of the plurality of tool pots,
• the plurality of tool pots includes a first tool pot and a second tool pot among the plurality of tool pots,
• the first tool pot is inserted through the rotation stop hole of one of the first inner link plates and through the rotation permit hole of one of the first outer link plates, and
• adjacent to the first tool pot, the second tool pot is inserted through the rotation permit hole of one of the first inner link plates and through the rotation stop hole of one of the first outer link plates.