CN-115194098-B - Molding unit, molding machine, and molding method

CN115194098BCN 115194098 BCN115194098 BCN 115194098BCN-115194098-B

Abstract

The molding unit includes a cope flask, a drag flask that is connected to the cope flask, a flask guide member that is movably connected to the flask guide member and guides the cope flask and the drag flask, a1 st compacting member and a2 nd compacting member that are disposed so as to be capable of entering the cope flask and the drag flask, respectively, with the cope flask and the drag flask being connected to each other, a compacting cylinder that is movable relative to the cope flask and the drag flask, the compacting cylinder having a piston rod and a cylinder body that expands and contracts the piston rod, the 1 st compacting member being fixed to an end portion of the piston rod, and a compacting guide member that is a hollow rod member that is disposed inside the flask guide member and is movable.

Inventors

MIYASAKI HIROYUKI
Jin Tenggongyi

Assignees

新东工业株式会社

Dates

Publication Date: 20260505
Application Date: 20210511
Priority Date: 20210408

Claims (7)

1. A molding unit, wherein, The modeling unit is provided with: A cope flask; A drag flask that can be connected to the cope flask; A flask guide member to which the cope flask and the drag flask are movably connected, the flask guide member guiding the cope flask and the drag flask; A1 st compacting member and a2 nd compacting member disposed so as to sandwich a cope and drag flask, the cope and drag flask being connected to each other, and being capable of being respectively inserted into the cope and drag flask; a single compaction cylinder configured to be movable with respect to the cope and drag flasks, having a piston rod and a cylinder body extending and contracting the piston rod, the 1 st compaction member being fixed to an end of the piston rod, and A compaction guide member capable of fixing a relative position between the 2 nd compaction member and the cylinder main body, The flask guide member is a hollow rod member, The compaction guide member is a movable rod member disposed inside the flask guide member.
2. The molding unit of claim 1, wherein, The modeling unit is provided with: a pair of sand box guiding members including the sand box guiding members, and A pair of compaction guide members comprising the compaction guide members, The pair of flask guide members are hollow rod members respectively, The pair of compaction guide members are each a movable rod member disposed inside the corresponding flask guide member.
3. The molding unit of claim 2, wherein, The pair of flask guide members are disposed at positions symmetrical with respect to a center line passing through respective centers of the cope flask and the drag flask.
4. The molding unit according to claim 1 to 3, wherein, The compaction guide member having a tip end portion and a tip end portion, the 2 nd compaction member being fixed to the tip end portion of the compaction guide member, The molding unit further includes a fixing member, i.e., a wedge, which fixes the distal end portion of the compaction guide member to the cylinder main body.
5. A molding machine, wherein, The molding machine is provided with: The modeling unit of any one of claims 1 to 4; A flask moving portion that relatively moves the cope flask and the drag flask along the flask guide member to clamp or release the matchplate member with the cope flask and the drag flask; A conveying part for carrying in and out the pattern member between the cope flask and the drag flask, and And a transport conversion unit that rotates the transport unit.
6. The molding machine of claim 5, wherein, The molding machine further includes a slide portion that slides the drag flask with the cope flask and the drag flask separated.
7. A molding method using a molding unit, wherein The modeling unit is provided with: A cope flask; A drag flask that can be connected to the cope flask; A flask guide member to which the cope flask and the drag flask are movably connected, the flask guide member guiding the cope flask and the drag flask; A1 st compacting member and a2 nd compacting member disposed so as to sandwich a cope and drag flask, the cope and drag flask being connected to each other, and being capable of being respectively inserted into the cope and drag flask; a single compaction cylinder configured to be movable with respect to the cope and drag flasks, having a piston rod and a cylinder body extending and contracting the piston rod, the 1 st compaction member being fixed to an end of the piston rod, and A compaction guide member capable of fixing a relative position between the 2 nd compaction member and the cylinder main body, The flask guide member is a hollow rod member, The compaction guide member is a rod member which is disposed inside the flask guide member and is movable, The modeling method comprises the following steps: A step of fixing the compaction guide member to the cylinder body, and The step of compacting by the 1 st compacting member and the 2 nd compacting member is performed by extending the piston rod.

Description

Molding unit, molding machine, and molding method Technical Field The present disclosure relates to molding units, molding machines, and molding methods. Background Patent document 1 discloses a molding machine for performing mold molding by compacting sand. The molding machine includes a cope flask, a drag flask, a mold plate sandwiched between the cope flask and the drag flask, an upper compacting member inserted into the cope flask, a lower compacting member inserted into the drag flask, an upper actuator for moving the upper compacting member, a lower actuator for moving the lower compacting member, and a support frame. The upper actuator and the lower actuator are connected to the support frame. The upper actuator and the lower actuator are each, for example, a hydraulic cylinder that expands and contracts a piston rod. The upper and lower actuators are extended so that the upper and lower compacting members move toward the mold plates to compact sand in the respective molding spaces in the cope and drag flasks. Patent document 1 Japanese patent laid-open publication No. 2010-525948 The molding machine described in patent document 1 needs to be provided with an upper actuator and a lower actuator for compacting. Here, in order to reduce manufacturing costs including initial costs and the like, it is considered to reduce the number of actuators. However, in order to perform compaction with one actuator, the actuator that brings one compaction member into the cope and drag flasks requires a guide member that secures the other compaction member. In order to achieve uniform compaction, it is necessary to dispose the guide member at a position where the compacting member can be stably supported. However, the guide member is capable of stably supporting the compacting member at the same position as the position at which the weight of the cope and drag flasks can be stably supported, and thus the guide member of the compacting member interferes with the guide member for guiding the cope and drag flasks. Therefore, it is difficult to dispose the guide member of the compacting member in an appropriate position. Therefore, in order to reduce the manufacturing cost, the number of actuators is simply reduced, and there is a possibility that a mold with excellent quality cannot be manufactured. Disclosure of Invention The present disclosure provides a molding unit, a molding machine, and a molding method that can ensure molding accuracy and reduce manufacturing costs. A molding unit according to one aspect of the present disclosure includes a cope flask, a drag flask that is connectable to the cope flask, a flask guide member that movably connects the cope flask and the drag flask to the flask guide member, a 1 st compacting member and a 2 nd compacting member that are disposed so as to sandwich the cope flask and the drag flask and that are respectively movable into the cope flask and the drag flask, a compacting cylinder that is disposed so as to be movable relative to the cope flask and the drag flask and that has a piston rod and a cylinder body that expands and contracts the piston rod, and a compacting guide member that is capable of fixing a relative position between the 2 nd compacting member and the cylinder body, the flask guide member being a hollow rod member that is disposed inside the flask guide member and that is movable. With this molding unit, the 1 st compacting member is brought into the cope and drag flasks by extension of the piston rods of the compacting cylinders. Here, the compaction cylinder is configured to be movable with respect to the cope and drag flasks, and therefore, the compaction cylinder is moved in a direction opposite to the compaction direction of the 1 st compaction member due to the reaction force obtained via the 1 st compaction member. The 2 nd compacting member is fixed to the cylinder main body by the compacting guide member, and therefore, moves in a direction opposite to the compacting direction of the 1 st compacting member in accordance with the movement of the compacting cylinder. Thus, the 1 st compacting member and the 2 nd compacting member can be moved close to each other using one compacting cylinder. In this way, the molding unit can be properly compacted using one compaction cylinder. Thus, the molding unit can reduce initial costs as compared to a molding unit of a molding machine that performs compaction with two actuators. The compaction guide member is movably disposed inside the flask guide member. Thereby, the molding unit can avoid interference between the compaction guide member and the flask guide member. Therefore, for example, the molding unit may be configured such that the compaction guide member is disposed at a position where the compaction member can be stably supported, and the flask guide member is disposed at a position where the weight of the cope and drag flasks can be stably supported. Thus, the molding unit can ensure molding accuracy