Manual overturning lifting appliance for sand core

Abstract

The utility model discloses a manual sand core overturning lifting appliance which comprises a cross beam, a fixed arm and a movable arm, the fixed arm and the movable arm are respectively arranged at two ends of the cross beam, the upper end of the fixed arm is vertically and fixedly connected with one end of the cross beam, the lower end of the fixed arm is in shaft connection with a first chuck, and the upper end of the movable arm is in shaft connection with the end part of the cross beam. The end part of the cross beam is in shaft connection with a movable arm locking handle, the movable arm locking handle is in shaft connection with a chain plate, the chain plate is connected with an upper end shaft of a movable arm, a lower end shaft of the movable arm is connected with a second chuck, a locking device is arranged between the cross beam and the movable arm, and a hoisting plate is arranged at the center of the upper part of the cross beam. According to the utility model, the coring is convenient and fast, the sand core is not easy to damage, the labor intensity of workers is reduced, the production efficiency is improved, one set of lifting appliance can be suitable for coring operation of two sand cores, certain universality is realized, and the economic benefit is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of auxiliary tooling for sand core production, in particular to a manual turning hoist for sand cores. Background Art

[0002] As castings become increasingly complex and lightweight, casting workers face increasing demands for designing internal and external sand cores of varying sizes and shapes. Factory sand core processing is typically manual. After the mold is machined, the operator typically removes the core by hand. A tray with the same shape as the core is removed from the upper mold, then snaps the tray back into place. The core is then flipped over to ensure complete core removal. Manual coring is slow, labor-intensive, and prone to damage, compromising product quality. Automated coring increases production costs, placing a significant burden on the company. Furthermore, when the orientation of the core differs from the core box mold opening, a manual coring fixture is essential. This reduces labor intensity, ensures quality, and improves production efficiency. Summary of the Invention

[0003] The purpose of the utility model is to overcome the defects in the above-mentioned prior art and provide a manual sand core flip hanger to solve the problems of slow manual coring speed, high labor intensity for workers, easy damage to sand cores and poor product quality.

[0004] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a manual flip hanger for sand cores, comprising a crossbeam and a fixed arm and a movable arm respectively installed at both ends of the crossbeam, the upper end of the fixed arm is vertically fixedly connected to one end of the crossbeam, the lower end shaft of the fixed arm is connected to a first chuck, the first chuck is located on the inner side of the fixed arm, and a bearing assembly and a fixed arm rotating handle are connected to the outer side of the fixed arm and the other end of the shaft, and the first chuck is driven to rotate by the same angle by rotating the fixed arm rotating handle, the upper end of the movable arm is connected to the crossbeam end shaft, the crossbeam end is connected to the movable arm locking handle shaft, and the movable arm locking handle is connected to the chain plate shaft. The chain plate is connected to the upper end shaft of the movable arm, so that the movable arm, the crossbeam, the movable arm locking handle and the chain plate form a chain structure, and the movable arm is rotated around the axis connected to the crossbeam by pulling the movable arm locking handle. The lower end shaft of the movable arm is connected to a second chuck, and the second chuck is located on the inner side of the movable arm, and a bearing assembly and a movable arm rotating handle are connected to the outer side of the movable arm and the other end of the shaft. By rotating the movable arm rotating handle, the second chuck is driven to rotate by the same angle. A locking device is installed between the crossbeam and the movable arm, and a lifting plate is installed at the upper center of the crossbeam. Positioning guide rods are respectively provided on the fixed arm and the movable arm.

[0005] Further optimization, the locking device is a plug-in structure, including a motherboard, a daughter board and a lock. The motherboard is fixed on the beam, and the daughter board is fixed on the movable arm. When the movable arm is perpendicular to the beam, the daughter board is just inserted into the motherboard. There are holes processed at the corresponding positions of the motherboard and the daughter board, and the lock just passes through the holes to lock the daughter board and the motherboard.

[0006] Further optimization, the positioning guide rod is inserted into the rod sleeve, the rod sleeve is fixed to the lower ends of the fixed arm and the movable arm, a pin is connected to the upper part of the positioning guide rod, and a cross bar is fixed at the corresponding heights of the fixed arm and the movable arm. When the pin is overlapped on the upper side of the cross bar, the positioning guide rod is fixed to the fixed arm and the movable arm. When the pin is pulled out, the positioning guide rod moves downward along the rod sleeve to the upper end of the positioning guide rod and is stuck on the rod sleeve. At this time, the lower end of the positioning guide rod is lower than the lowest position of the sand core, and the lower end of the positioning guide rod is processed into a cone.

[0007] Further optimization is carried out, the shape of the first chuck is adapted to the shape of the sand core hanging point position, and the shape of the first chuck can adapt to two sand core hanging point positions. When the first chuck is forward, it is the first position and can adapt to the shape of the concave and convex of one of the sand core hanging point positions. When the first chuck is rotated 90 degrees along the axis, it is the second position and can adapt to the shape of the other sand core hanging point position. The second chuck has the same shape as the first chuck.

[0008] Compared with the prior art, the present invention has the following beneficial effects: coring is convenient, sand cores are not easily damaged, labor intensity of workers is reduced, production efficiency is improved, and a set of slings can be applied to coring operations of two types of sand cores, which has certain versatility and improves economic benefits. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is a schematic diagram of the structure of the manual flipping hanger for sand cores.

[0010] Figure 2 This is a schematic diagram of the cross-sectional structure of the manual flipping hanger for sand cores.

[0011] Figure 3 This is a structural diagram of the sand core manual flip hanger in the released state.

[0012] Figure 4 This is a schematic diagram of the cross-sectional structure of the sand core manual flip hanger in the locked state.

[0013] Figure 5 This is a schematic diagram of the second structure of the sand core manual flip hoist for hoisting the sand core.

[0014] Figure 6 Schematic diagram of the sand core manual flipping hanger and the sand core positioning jig.

[0015] Figure 7This is a schematic diagram of the cross-sectional structure of the sand core manual flip hanger and the sand core separated state.

[0016] Markings in the figure: 1-first chuck, 2-fixed arm turning handle, 3-positioning guide rod, 4-cross bar, 5-fixed arm, 6-lifting plate, 7-cross beam, 8-movable arm locking handle, 9-movable arm, 10-movable arm turning handle, 11-bearing assembly, 12-second chuck, 13-locking device, 14-chain plate, 15-sand core one, 16-sand core two, 17-mold. DETAILED DESCRIPTION

[0017] To make the purpose, technical solutions, and advantages of the embodiments of the present invention more clear, the technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Generally, the components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0018] like Figure 1 As shown, the utility model provides a manual flip hanger for sand cores, comprising a crossbeam 7 and a fixed arm 5 and a movable arm 9 respectively mounted at both ends of the crossbeam. The upper end of the fixed arm 5 is vertically fixedly connected to one end of the crossbeam 7, and the lower end of the fixed arm 5 is connected to a first chuck 1. The first chuck 1 is located on the side of the fixed arm 5 facing the crossbeam 7, i.e., the inner side. A bearing assembly 11 and a fixed arm handle 2 are connected to the outer side of the fixed arm 5 and the other end of the shaft. By rotating the fixed arm handle 2, the first chuck 1 is driven to rotate by the same angle, as shown in FIG. Figure 2 As shown, the upper end of the movable arm 9 is connected to the axis of the end of the crossbeam 7, the end of the crossbeam 7 is connected to the axis of the movable arm locking handle 8, the movable arm locking handle 8 is connected to the axis of the chain plate 14, and the chain plate 14 is connected to the upper end axis of the movable arm 9, so that the movable arm 9, the crossbeam 7, the movable arm locking handle 8 and the chain plate 14 form a chain structure. By pulling the movable arm locking handle 8, the movable arm 9 is rotated around the axis connected to the crossbeam 7, and the lower end axis of the movable arm 9 is connected to the second clamp 12, which is located on the side of the movable arm 9 facing the crossbeam 7, that is, on the inner side. On the outside of the movable arm 9 and the other end of the axis are connected to the bearing assembly 11 and the movable arm rotating handle 10. By rotating the movable arm rotating handle 10, the second clamp 12 is driven to rotate by the same angle. The shape of the first clamp 1 is adapted to the concave and convex shape of the sand core hanging point position, as shown in FIG. Figure 4 and Figure 6 As shown, the shape of the first chuck 1 can adapt to two sand core hanging point positions. When the first chuck 1 is forward, it is the first position and can adapt to the concave and convex shape of the sand core hanging point position of sand core 15. When the first chuck 1 is rotated 90 degrees along the axis, it is the second position and can adapt to the concave and convex shape of the sand core hanging point position of sand core 2 16. Similarly, the second chuck 12 has the same shape as the first chuck 1.

[0019] like Figure 1 and Figure 3 As shown, a lifting plate 6 is installed at the upper center of the beam 7, and a locking device 13 is installed between the beam 7 and the movable arm 9. The locking device 13 is a plug-in structure, including a motherboard, a daughterboard and a lock. The motherboard is fixed on the beam 7, and the daughterboard is fixed on the movable arm 9. When the movable arm 9 is perpendicular to the beam 7, the daughterboard is just inserted into the motherboard. Sockets are processed at the corresponding positions of the motherboard and the daughterboard, and the lock passes through the socket to lock the daughterboard and the motherboard.

[0020] like Figure 1 and Figure 5 As shown, the fixed arm 5 and the movable arm 9 are respectively provided with a positioning guide rod 3. The positioning guide rod 3 is inserted into the rod sleeve, and the rod sleeve is fixed to the lower end of the fixed arm 5 and the movable arm 9. A pin is connected to the upper part of the positioning guide rod 3, and a cross bar 4 is fixed at the corresponding height of the fixed arm 5 and the movable arm 9. When the pin is overlapped on the upper side of the cross bar 4, the positioning guide rod 3 is fixed to the fixed arm 5 and the movable arm 9. At this time, the lower end of the positioning guide rod 3 is located at the lower side of the rod sleeve; Figure 6 As shown, after the pin shaft is pulled out, the positioning guide rod 3 moves downward along the rod sleeve until the upper end of the positioning guide rod 3 is stuck on the rod sleeve. At this time, the lower end of the positioning guide rod 3 is lower than the lowest position of the sand core, and the lower ends of the two positioning guide rods 3 are just inserted into the two pin sleeves of the mold for positioning with the mold 17. This position can ensure that the sand core and the mold 17 are matched. The lower end of the positioning guide rod 3 is processed into a cone shape to facilitate insertion during positioning.

[0021] When in use, first keep the pin of the positioning guide rod 3 overlapped on the cross bar 4, that is, the initial position of the positioning guide rod 3, and pull the movable arm locking handle 8 while the locking device 13 remains open to make the movable arm 9 rotate around the axis connected to the cross beam 7 to the open position, that is, the angle between the movable arm 9 and the cross beam 7 is obtuse, and put the first chuck 1 of the fixed arm 5 into the sand core hanging point; then push the movable arm locking handle 8 in the reverse direction to make the movable arm 9 rotate around the axis connected to the cross beam 7 to the locking position, that is, the angle between the movable arm 9 and the cross beam 7 is right angles, so that the first After the second clamp 12 is placed at another sand core lifting point of the sand core, the locking device 13 is locked. At this time, the sand core hanger and the sand core are in a clamped state; then the lifting plate 6 on the upper part of the crossbeam 7 is connected to the crane to place the sand core hanging device in position, the pin shaft of the positioning guide rod 3 is released, and the positioning guide rod 3 is lowered to the upper end of the positioning guide rod 3 and is stuck on the rod sleeve, that is, the positioning guide rod 3 is positioned in the position, and the sand core is ready to be placed in the mold 17 to release the sand core. After the positioning guide rod 3 is inserted into the pin sleeve of the mold 17, the sand core is placed in the mold 17, and then, as shown in FIG. Figure 7As shown, the positioning guide rod 3 is retracted to the initial position of the positioning guide rod 3, the locking device 13 is opened, and the movable arm locking handle 8 is pulled to rotate the movable arm 9 around the axis connected to the crossbeam 7 to the open position, so that the second chuck 12 is away from the sand core, and then the first chuck 1 of the fixed arm 5 is also away from the sand core hanging point, thus completing a set of sand core mold removal-transfer-placement actions.

[0022] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. A manual sand core turning hanger, characterized by: The cam is connected to the upper end of the movable arm and the lower end of the movable arm, and the cam is connected to the lower end of the movable arm. The movable arm, crossbeam, movable arm locking handle and chain plate form a chain structure, and the movable arm is rotated around the axis connected to the crossbeam by pulling the movable arm locking handle. The lower end axis of the movable arm is connected to a second chuck, and the second chuck is located on the inner side of the movable arm. A bearing assembly and a movable arm rotating handle are connected to the outer side of the movable arm and the other end of the axis. By rotating the movable arm rotating handle, the second chuck is driven to rotate by the same angle. A locking device is installed between the crossbeam and the movable arm, and a lifting plate is installed at the upper center of the crossbeam. Positioning guide rods are respectively provided on the fixed arm and the movable arm.

2. A manual sand core turning hanger according to claim 1, characterized in that: The locking device is a plug-in structure, including a motherboard, a daughterboard and a lock. The motherboard is fixed on the crossbeam, and the daughterboard is fixed on the movable arm. When the movable arm is perpendicular to the crossbeam, the daughterboard is just inserted into the motherboard. There are holes processed at the corresponding positions of the motherboard and the daughterboard, and the lock just passes through the holes to lock the daughterboard and the motherboard.

3. The manual sand core turning hanger according to claim 1, characterized in that: The positioning guide rod is inserted into the rod sleeve, and the rod sleeve is fixed to the lower ends of the fixed arm and the movable arm. A pin is connected to the upper part of the positioning guide rod, and a cross bar is fixed at the corresponding heights of the fixed arm and the movable arm. When the pin is overlapped on the upper side of the cross bar, the positioning guide rod is fixed to the fixed arm and the movable arm. When the pin is pulled out, the positioning guide rod moves downward along the rod sleeve until the upper end of the positioning guide rod is stuck on the rod sleeve. At this time, the lower end of the positioning guide rod is lower than the lowest position of the sand core, and the lower end of the positioning guide rod is processed into a cone.

4. The manual sand core turning hanger according to claim 1, characterized in that: The shape of the first chuck is adapted to the concave and convex shape of the sand core hanging point position. The shape of the first chuck can adapt to two sand core hanging point positions. When the first chuck is forward, it is the first position and can adapt to the concave and convex shape of one of the sand core hanging point positions. When the first chuck is rotated 90 degrees along the axis, it is the second position and can adapt to the concave and convex shape of the other sand core hanging point position. The second chuck has the same shape as the first chuck.

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