Turnover hoisting device for small sand core sand mold

Abstract

A turnover hoisting device for a small sand core and sand mold belongs to the field of sand core and sand mold hoisting devices and comprises a hanging head, clamping arms and a turnover plate, the upper end of the hanging head is connected with a hanging ring, the clamping arms are arranged in the same plane in a mirror image mode, one end of each clamping arm is coaxially hinged to the hanging head, and the other end of each clamping arm is connected with a rotating shaft box. The plate surfaces of the two turnover plates are parallel and opposite to each other and are respectively connected and mounted on the rotating shaft, and the two turnover plates can correspondingly form clamping fit when the clamping arms are matched to swing and rotate; the device can be used for carrying out mechanical auxiliary transportation on small sand cores and sand molds and synchronously overturning the sand cores or the sand molds in the transportation process, is simple in structure, reliable in performance and convenient to use, and can be applied to casting production to reduce the labor intensity of workers, improve the production efficiency of products and reduce the production cost. Meanwhile, possible damage to the small sand cores and sand molds and even damage and scrapping in the carrying and overturning process can be reduced, consumption and waste of raw materials are reduced, the quality of the sand cores, the sand molds and the mold assembling quality of the sand cores and the sand molds is improved, and the quality of cast products is guaranteed.

Description

Technical Field

[0001] The utility model relates to the field of sand core and sand mold lifting devices, in particular to a reversible lifting device for small sand core and sand mold. Background Art

[0002] In current casting production, the finished sand cores and sand molds must be transported to the mold assembly station or mold assembly tooling for mold assembly and then casting of casting products. According to the structural design of the casting and the process requirements of the mold assembly, sometimes some sand cores or sand molds need to be flipped in space before the sand cores and sand molds are transported or after they are transported to the mold assembly station. Usually, this flipping operation is independent of the transportation process. In actual production, the flipping of large sand cores or sand molds is generally completed by mechanical operation with the help of special flipping equipment or flipping tools. Based on the comprehensive consideration of production factors such as cost and efficiency, the current production At present, the transportation and flipping of small sand cores and sand molds are still completed by manual handling and manual operation. Obviously, this manual handling and manual flipping operation method is very likely to cause local damage to small sand cores or sand molds, which will have a very adverse effect on the quality of the combined casting mold and the cast casting products. Once the small sand cores or sand molds are damaged and scrapped, it will also cause unnecessary waste of production raw materials and increase production input costs. At the same time, this extensive manual handling and manual flipping operation method also makes the labor intensity of workers and product production efficiency still have room and demand for further improvement and improvement. Therefore, in order to improve the production process method of the transportation and flipping of small sand cores and sand molds, it is necessary to research and develop tooling facilities for the transportation and flipping of small sand cores and sand molds in a targeted manner, improve the production method, and solve the existing technical problems. Utility Model Content

[0003] The purpose of the utility model is to provide a reversible lifting device for small sand cores and sand molds, so as to reduce the labor intensity of workers, improve product production efficiency, improve the quality of sand cores and sand molds and their assembly, and ensure the quality of casting products.

[0004] A flip lifting device for small sand core sand molds, comprising: a hanging head, a clamping arm and a flip plate; the upper end of the hanging head is connected to a suspension ring for correspondingly hanging with a hook on a lifting device, the two clamping arms are mirror-set to each other in the same plane, one end is coaxially hingedly connected to the hanging head, and the other end is respectively connected to a rotating shaft box, the rotating shafts on the two rotating shaft boxes are correspondingly arranged facing each other, the two flip plates have opposite plate surfaces, are respectively connected and installed on the rotating shafts and can rotate respectively relative to the rotating shaft boxes, and when the two clamping arms swing in coordination along the hinge axis in the setting plane, the two flip plates can form a clamping coordination in coordination.

[0005] The flip lifting device for small sand core sand molds also includes: a guide and limit mechanism for guiding the movement and limiting the structure of the clamping arm, the guide and limit mechanism is composed of two arc-shaped guide rods with corresponding structures, the arc curvature of the two arc-shaped guide rods is the same and they are respectively connected and installed on the clamping arm, a guide groove is provided on one of the arc-shaped guide rods, and a limit pin corresponding to the guide groove structure is provided on the other arc-shaped guide rod, the limit pin is inserted in the guide groove to form a guide limit cooperation, and the guide groove limits the guidance of the movement trajectory of the guide rod, so that the two clamping arms can be further dynamically limited within the setting plane, and at the same time, the limit cooperation between the end face of the guide rod and the end face of the guide groove is used to limit the maximum amplitude of the two clamping arms swinging toward each other, and when the two clamping arms swing to the limited amplitude, the rotating shafts on the two rotating shaft boxes can be kept horizontally coaxial with each other, so as to ensure that the two flip plates can cooperate with each other and rotate synchronously.

[0006] The flippable lifting device for small sand cores and sand molds is preferably provided with corresponding positioning bosses on the clamping mating surfaces on the inner sides of the two flip plates, and the positioning bosses correspond to the positioning groove structures provided on the corresponding sand cores or sand molds to be lifted. When lifting the sand cores or sand molds, the positioning bosses are fitted and embedded in the positioning grooves, which can make the clamping and suspension points of the clamping arms correspond to the center of gravity of the sand cores or sand molds, thereby ensuring the stability of the suspension and transportation. In addition, the reliability of the suspension and transportation can be enhanced through the hooking effect of the positioning bosses on the sand cores or sand molds.

[0007] The flip-over lifting device for small sand cores and sand molds preferably has the clamping mating surface on the inner side of the flip plate with an inclination angle a toward the inside, so that when the flip plate clamps the sand core or sand mold, the corresponding clamping mating surface can produce an upward supporting effect tendency on the sand core or sand mold, further improving the reliability of the suspension and transportation of the sand core or sand mold.

[0008] The beneficial effect of the utility model is that it provides a reversible lifting device for small sand cores and sand molds, which is used for mechanically assisting the transportation of small sand cores and sand molds in production, and realizing synchronous reversal of the sand cores or sand molds during the transportation process. It has a simple structure, reliable performance, and is easy to use. It is applied to the production of casting products, can effectively reduce the labor intensity of workers, and improve product production efficiency. At the same time, it replaces the staged manual transportation and manual reversal operation mode commonly used for small and medium-sized sand cores and sand molds in the prior art, and can also significantly reduce the damage and even destruction and scrapping of small sand cores and sand molds that may be caused during the transportation and reversal process. On the basis of reducing the waste of raw material consumption, it improves the quality of sand cores and sand molds and their assembly, and ensures the quality of casting products. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 This is the front view of the reversible lifting device for small sand cores and sand molds.

[0010] Figure 2 A side view of a reversible lifting device for small sand cores and molds.

[0011] Figure 3 It is a three-dimensional structural diagram of the state of the workpiece to be clamped by the reversible lifting device for small sand cores and sand molds.

[0012] Figure 4 It is a three-dimensional structural diagram of the state of a reversible lifting device for clamping and moving workpieces for small sand cores and sand molds.

[0013] Figure 5 It is a three-dimensional structural diagram of the reversible lifting device for small sand cores and sand molds after the workpiece is flipped.

[0014] Figure 6 This is a three-dimensional structural diagram of the reversible lifting device for small sand cores and sand molds after the workpiece is released.

[0015] Among them: 1 is a hanging head, 2 is a clamping arm, 3 is a flip plate, 4 is a positioning boss, 5 is a suspension ring, 6 is a rotating shaft box, 7 is an arc-shaped guide rod, 8 is a positioning groove, 9 is a handle, and 10 is a rotating sand mold. DETAILED DESCRIPTION

[0016] Furthermore, the technical solution for which protection is sought in the present utility model is described in detail in conjunction with specific embodiments and their accompanying drawings.

[0017] A reversible lifting device for small sand cores and sand molds, such as Figure 1 and Figure 2As shown, it is composed of a hanging head 1, a clamping arm 2, a flip plate 3, a suspension ring 5, a rotating shaft box 6 and an arc-shaped guide rod 7; the upper end of the hanging head 1 is connected to the suspension ring 5, one end of the two clamping arms 2 is coaxially hingedly connected to the lower end of the hanging head 1, the clamping arms 2 are mutually corresponding mirror-imaged broken-line rod bodies bent inwardly, the outer sides of the rod bodies are respectively provided with handles 9, and the other ends are respectively provided with the rotating shaft boxes 6. When the hanging head 1 is used for suspension, the mounting ends of the rotating shaft boxes 6 of the two clamping arms 2 can naturally retract inwardly; the two clamping arms 2 are provided with guide rods composed of two arc-shaped guide rods 7. The limit mechanism is a circular arc-shaped guide rod 7, which is respectively fixedly connected to the clamping arm 2. One of the circular arc-shaped guide rods 7 is provided with a limit pin, and the other is provided with a guide groove. The clamping arm 2 is guided and limited in structure through the insertion fit between the limit pin and the guide groove. The two flip plates 3 are arranged opposite to each other and are respectively connected and installed on the rotating shaft of the shaft box 6. They can rotate relative to the shaft box 6 and move towards each other to form a clamping fit. At the same time, the clamping fit surface on the inner side of the flip plate 3 has an inclination angle a toward the inside, and a positioning boss 4 is also installed on the plate surface.

[0018] Furthermore, taking the flipping and lifting of a rotating sand mold 10 as an example, the method of using the flip lifting device for a small sand core sand mold described in this embodiment is specifically described: first, the suspension ring 5 is hung on the hook of the lifting and lifting equipment, and the lifting and lifting equipment is positioned at the production station of the rotating sand mold 10. The operator holds the handle 9 to pull the two clamping arms 2 apart, and at the same time, the flip lifting device for a small sand core sand mold falls to an appropriate position, and the completed rotating sand mold 10 is placed on the two clamping arms 2 accordingly, as shown in FIG. Figure 3 As shown, the reversible lifting device for small sand core sand mold is in a state of waiting to clamp a workpiece; the reversing plate 3 is aligned with the two sides of the rotating sand mold 10 respectively, and the operator holds the handle 9 to push the two clamping arms 2 toward each other, so that the positioning boss 4 on the reversing plate 3 is matched and embedded in the positioning groove on the rotating sand mold 10, and then the lifting and hoisting equipment is controlled to rise, so that the clamping arm 2 clamps and suspends the rotating sand mold 10 under the action of gravity. At this time, Figure 4 As shown, the reversible lifting device for small sand core sand mold is in a state of clamping and moving workpieces; further, the operator controls the crane lifting equipment to move the rotating sand mold 10 to the mold assembly area. In the suspended state, the operator gently presses one end of the rotating sand mold 10 to make the rotating sand mold 10 and the reversing plate 3 clamping the rotating sand mold 10 perform a 180° reversal with the rotating shaft on the rotating shaft box 6 as the center, as shown in FIG. Figure 5 As shown, after flipping, the flippable lifting device for a small sand core sand mold is in a state after the workpiece is flipped; after the flipping is completed, the lifting and hoisting equipment is controlled to place the rotating sand mold 10 on the sand mold pallet. When the rotating sand mold 10 is returned, the clamping effect of the clamping arm 2 on the rotating sand mold 10 is naturally relaxed, and the operator can hold the handle 9 again to pull the two clamping arms 2 apart, so that the rotating sand mold 10 is completely separated from the clamping arm 2, and the movement and flipping operations of the rotating sand mold 10 are all completed. At this time, Figure 6 As shown, the reversible lifting device for small sand core sand molds is in a workpiece releasing state.

Claims

1. A reversible lifting device for small sand cores and sand molds, characterized in that: include: A hanging head (1), a clamping arm (2) and a flip plate (3); the upper end of the hanging head (1) is connected to a hanging ring (5); the two clamping arms (2) are arranged in a mirror image with each other in the same plane, one end of which is coaxially hingedly connected to the hanging head (1), and the other end of which is respectively connected to a rotating shaft box (6); the rotating shafts on the two rotating shaft boxes (6) are arranged opposite to each other; the two flip plates (3) have parallel surfaces facing each other, are respectively connected and installed on the rotating shafts and can rotate relative to the rotating shaft boxes (6); when the two clamping arms (2) swing in coordination along the hinge axis in the setting plane, the two flip plates (3) can form a clamping coordination in coordination.

2. A reversible lifting device for small sand cores and sand molds as claimed in claim 1, characterized in that: Also includes: A guide and limit mechanism for guiding the movement and limiting the structure of the clamping arm (2), the guide and limit mechanism being composed of two arc-shaped guide rods (7) having structures corresponding to each other, the arcs of the two arc-shaped guide rods (7) being the same and being respectively connected and mounted on the clamping arm (2), a guide groove being provided on one of the arc-shaped guide rods (7), and a limit pin corresponding to the guide groove structure being provided on the other of the arc-shaped guide rods (7), the limit pin being inserted in the guide groove to form a guide and limit fit.

3. A reversible lifting device for small sand cores and sand molds as claimed in claim 1 or 2, characterized in that: Positioning bosses (4) are respectively provided on the clamping mating surfaces on the inner sides of the two flip plates (3), and the positioning bosses (4) correspond to positioning groove structures provided on the corresponding hoisted sand core or sand mold.

4. A reversible lifting device for small sand cores and sand molds as claimed in claim 3, characterized in that: The clamping mating surface on the inner side of the flip plate (3) has an inclination angle a facing inwards.

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