Turnover tool for casting sand mold

Abstract

The utility model discloses a turnover tool for casting sand mould, which comprises a mounting seat, a rotating piece and a positioning piece, the mounting seat is provided with a first positioning hole, the rotating piece is rotatably arranged on the mounting seat, the casting sand mould is fixedly arranged on the rotating piece, the rotating piece is provided with a plurality of second positioning holes arranged corresponding to the first positioning hole, and the positioning piece is arranged on the mounting seat. The first positioning hole is selectively opposite to one of the multiple second positioning holes by rotating the rotating piece, the positioning piece is suitable for being arranged in the first positioning hole in a penetrating mode, and at least part of the structure of the positioning piece is suitable for extending into the corresponding second positioning hole to limit rotation of the rotating piece. Therefore, when the casting sand mold needs to be rotated, the rotating piece is driven to rotate, overturning of the casting sand mold can be achieved, operation is easy and convenient, overturning operation can be completed by a single person, meanwhile, through cooperative use of the first positioning hole, the second positioning hole and the positioning piece, accurate positioning and fixing of the overturning angle of the casting sand mold can be achieved, and the casting sand mold is convenient to use. And the positioning accuracy of the overturning angle of the casting sand mold is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of casting sand mold turnover, in particular to a turnover tool for casting sand mold. Background Art

[0002] At present, the aluminum alloy cylinder block of the engine is usually manufactured by casting. During the casting process, the casting sand mold needs to be quickly turned over and positioned to ensure that the casting is fully filled.

[0003] In the related art, the casting sand mold is usually manually flipped by using an overhead crane and a hoist. However, the casting sand mold and the casting are heavy as a whole, and usually require multiple people to flip them, which is difficult to operate manually. In addition, during the casting process, the casting sand mold needs to be flipped to a suitable angle to completely expel the gas in the casting sand mold and reduce defects such as bubbles and sand holes in the casting. However, the flipping angle of the casting sand mold is currently difficult to accurately locate, resulting in the inability to completely discharge the gas in the casting sand mold. Utility Model Content

[0004] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the purpose of the utility model is to propose a flipping tool for casting sand molds, which is provided with a rotating part specially used for fixing and installing the casting sand molds. When the casting sand molds need to be rotated, the casting sand molds can be flipped by driving the rotating part. The operation is simple and convenient, and a single person can complete the flipping operation. At the same time, a first positioning hole is provided on the mounting seat, and a plurality of second positioning holes corresponding to the first positioning holes are provided on the rotating part. When a certain angle needs to be positioned, the rotating part is rotated so that the first positioning hole is opposite to the corresponding second positioning hole, and then the positioning part is inserted into the first positioning hole and the second positioning hole in sequence, so as to facilitate the precise positioning and fixing of the flipping angle of the casting sand mold.

[0005] In order to achieve the above-mentioned purpose, the embodiment of the utility model proposes a turning tool for casting sand mold, comprising:

[0006] A mounting seat, the mounting seat having a first positioning hole;

[0007] A rotating member and a positioning member, wherein the rotating member is rotatably arranged on a mounting seat, the casting sand mold is fixedly arranged on the rotating member, the rotating member has a plurality of second positioning holes arranged corresponding to the first positioning holes, and the first positioning hole is selectively opposite to one of the plurality of second positioning holes by rotating the rotating member, the positioning member is suitable for being inserted into the first positioning hole, and at least part of the structure of the positioning member is suitable for extending into the corresponding second positioning hole to limit the rotation of the rotating member.

[0008] According to the flipping tooling of the embodiment of the utility model, a rotating part specially used for fixing and installing the casting sand mold is provided. When the casting sand mold needs to be rotated, the casting sand mold can be flipped by driving the rotating part. The operation is simple and convenient, and the flipping operation can be completed by one person. At the same time, a first positioning hole is provided on the mounting seat and a plurality of second positioning holes corresponding to the first positioning hole are provided on the rotating part. When a certain angle needs to be positioned, the rotating part is rotated to make the first positioning hole face the corresponding second positioning hole, and then the positioning part is inserted into the first positioning hole and the second positioning hole in sequence, so as to facilitate the precise positioning and fixation of the flipping angle of the casting sand mold.

[0009] According to some examples of the utility model, the mounting seat has a first mounting plate and a second mounting plate that are arranged opposite to and spaced apart from each other, the first mounting plate and the second mounting plate jointly define a first mounting space, the rotating member is rotatably arranged in the first mounting space, and at least one of the first mounting plate and the second mounting plate is provided with a first positioning hole.

[0010] According to some examples of the present utility model, the rotating member includes a first rotating positioning plate and a second rotating positioning plate that are arranged oppositely and spaced apart, the first rotating positioning plate is opposite to and spaced apart from the first mounting plate, and when the first mounting plate is provided with a first positioning hole, the first rotating positioning plate has a plurality of second positioning holes that are arranged correspondingly to the first positioning holes;

[0011] The second rotation positioning plate is opposite to and spaced from the second mounting plate, and when the second mounting plate is provided with a first positioning hole, the second rotation positioning plate has a plurality of second positioning holes arranged corresponding to the first positioning holes.

[0012] According to some examples of the utility model, the rotating part also includes a first connecting plate and a second connecting plate that are relatively and spaced apart from each other, and the first connecting plate and the second connecting plate are both fixedly connected between the first rotation positioning plate and the second rotation positioning plate to jointly define a second installation space, and the casting sand mold is fixedly arranged in the second installation space.

[0013] According to some examples of the present invention, the first connecting plate and / or the second connecting plate has weight-reducing holes.

[0014] According to some examples of the present invention, it further includes: a counterweight block, which is fixed on the first connecting plate and / or the second connecting plate.

[0015] According to some examples of the utility model, it also includes: a flip handwheel and a rotating shaft, the mounting seat has a mounting hole, the rotating shaft is passed through the mounting hole, and the rotating shaft is fixedly connected between the flip handwheel and the rotating member, and the flip handwheel is suitable for driving the rotating member to rotate through the rotating shaft.

[0016] According to some examples of the present invention, it further includes: a bearing, the bearing is fixed in the mounting hole, and the rotating shaft passes through the bearing and can rotate relative to the bearing.

[0017] According to some examples of the utility model, it also includes: a limiting member, the mounting seat also has a first limiting hole, the rotating member has a second limiting hole arranged corresponding to the first limiting hole, the limiting member is suitable for passing through the first limiting hole, and at least part of the structure of the limiting member is suitable for extending into the corresponding second limiting hole to limit the rotation of the rotating member.

[0018] According to some examples of the present invention, the positioning member is a positioning pin.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is an assembly diagram of a turning tool and a casting sand mold according to an embodiment of the utility model;

[0022] Figure 2 It is a schematic diagram of a first viewing angle of a flip tool according to an embodiment of the utility model;

[0023] Figure 3 A schematic diagram of a second viewing angle of a flip tool according to an embodiment of the utility model;

[0024] Figure 4 A cross-sectional view of a turning tool according to an embodiment of the utility model;

[0025] Figure 5 is a schematic diagram of a first mounting plate according to an embodiment of the utility model;

[0026] Figure 6 is a schematic diagram of a first rotating positioning plate according to an embodiment of the utility model;

[0027] Figure 7 is a schematic diagram of a positioning member according to an embodiment of the utility model;

[0028] Reference numerals:

[0029] Flip tooling 100;

[0030] Mounting seat 1; first positioning hole 11; first mounting plate 12; second mounting plate 13; first limiting hole 14; mounting hole 15;

[0031] Rotating member 2; second positioning hole 21; first rotation positioning plate 22; second rotation positioning plate 23; first connecting plate 24; second connecting plate 25; weight reduction hole 26; second limiting hole 27;

[0032] Positioning member 3;

[0033] Turn the hand wheel 4;

[0034] Rotation axis 5;

[0035] Support bearing 61; Power-assist bearing 62;

[0036] Limiting member 7;

[0037] Casting sand mold 200. DETAILED DESCRIPTION

[0038] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0039] The turning tool for casting sand mold proposed according to the embodiment of the utility model is described below with reference to the accompanying drawings.

[0040] It should be noted that the casting sand mold needs to be flipped, filled and vented during the casting process. Specifically, taking the aluminum alloy cylinder casting of the engine as an example, during the casting process of the aluminum alloy cylinder, it is necessary to quickly flip and position to meet the process requirements to ensure full filling.

[0041] The existing process usually uses a crane and a hoist for manual flipping. However, the casting sand mold and the casting are heavy (up to 1500KG), and usually require multiple people to flip. The surface temperature of the casting sand mold reaches more than 200°C, which is difficult to operate manually. In addition, the casting sand mold needs to be flipped to a suitable angle during the casting process. For example, during the casting process of the aluminum alloy cylinder body, the cylinder body needs to be flipped to 135°, 225°, and 180° to completely discharge the gas in the casting sand mold. However, the flipping angle of the casting sand mold is currently difficult to accurately locate, resulting in the inability to completely discharge the gas in the casting sand mold. The aluminum alloy cylinder body is usually accompanied by defects such as bubbles and sand holes.

[0042] Based on this, the present application proposes a flipping tool 100 for a casting sand mold 200, and the flipping tool 100 is provided with a rotating part 2 specifically used for fixing and installing the casting sand mold 200. When the casting sand mold 200 needs to be rotated, the casting sand mold 200 can be flipped by driving the rotating part 2 to rotate. The operation is simple and convenient, and the flipping operation can be completed by a single person. At the same time, a first positioning hole 11 is provided on the mounting seat 1, and a plurality of second positioning holes 21 corresponding to the first positioning hole 11 are provided on the rotating part 2. When a certain angle needs to be positioned, the rotating part 2 is rotated so that the first positioning hole 11 is opposite to the corresponding second positioning hole 21, and then the positioning part 3 is inserted into the first positioning hole 11 and the second positioning hole 21 in sequence, so as to facilitate the precise positioning and fixation of the flipping angle of the casting sand mold 200.

[0043] like Figure 1-Figure 7 As shown, the turning tool 100 for casting a sand mold 200 according to the embodiment of the utility model comprises: a mounting seat 1, a rotating member 2 and a positioning member 3.

[0044] Among them, reference Figure 1 and Figure 5 As shown, the mounting seat 1 has a first positioning hole 11, the rotating member 2 is rotatably disposed on the mounting seat 1, and the casting sand mold 200 is fixedly disposed on the rotating member 2. With this arrangement, the casting sand mold 200 can rotate with the rotating member 2. When the casting sand mold 200 is filled with high-temperature molten aluminum, if it is necessary to rotate the casting sand mold 200, the casting sand mold 200 can be flipped by driving the rotating member 2 to rotate. The operation is simple and convenient. Compared with the previous flipping operation by multiple people, the casting sand mold 200 in the present application can be operated by one person using the rotating member 2, which greatly simplifies the rotation operation.

[0045] Further, the rotating member 2 has a plurality of second positioning holes 21 arranged corresponding to the first positioning holes 11, and the first positioning hole 11 is selectively opposed to one of the plurality of second positioning holes 21 by rotating the rotating member 2. Specifically, the rotating member 2 is pre-arranged with a plurality of second positioning holes 21, wherein the positions of the second positioning holes 21 are positions opposite to the first positioning holes 11 when the casting sand mold 200 is rotated to a certain angle, for example, Figure 6As shown, the rotating member 2 has a position where the second positioning hole 21 is opposite to the first positioning hole 11 when the casting sand mold 200 rotates to 0°, 135°, 180°, and 225°. That is to say, when the first positioning hole 11 is opposite to the second positioning hole 21 at 0°, it means that the casting sand mold 200 is rotated to 0°, when the first positioning hole 11 is opposite to the second positioning hole 21 at 135°, it means that the casting sand mold 200 is rotated to 135°, and so on, ..., when the first positioning hole 11 is opposite to the second positioning hole 21 at 225°, it means that the casting sand mold 200 is rotated to 225°. With this arrangement, the first positioning hole 11 can be made opposite to one of the second positioning holes 21 at 0°, 135°, 180° or 225° by rotating the rotating member 2, so as to achieve precise positioning of the flipping angle of the casting sand mold 200.

[0046] Further, when the rotating member 2 is rotated so that the first positioning hole 11 is opposite to the corresponding second positioning hole 21, for example, the first positioning hole 11 is opposite to the second positioning hole 21 at an angle of 135°, Figure 1 and Figure 7 As shown, the positioning member 3 is inserted into the first positioning hole 11, and at least part of the structure of the positioning member 3 is ensured to extend into the second positioning hole 21 at 135° to limit the rotation of the rotating member 2, so that the casting sand mold 200 can be flipped to 135° and then fixed for a period of time, thereby realizing the precise positioning and fixation of the flipping angle of the casting sand mold 200.

[0047] In order to enable those skilled in the art to better understand the present solution, the following example describes in detail the working process of the flip tool 100:

[0048] First, high-temperature molten aluminum is injected into the casting sand mold 200. When the high-temperature molten aluminum fills the casting sand mold 200, the valve of the casting sand mold 200 is quickly closed to prevent the molten aluminum from flowing out. Optionally, the flip tool 100 is provided with an aluminum liquid flow-stop baffle, and the valve closing is controlled by pushing the aluminum liquid flow-stop baffle. Then, the casting sand mold 200 is moved out of the casting area and fixedly installed on the rotating part 2 of the flip tool 100. The rotating part 2 is used to quickly flip the casting sand mold 200 to the range of 135°-225°, and the rotating part 2 is reciprocated to make the casting sand mold 200 rotate 4-5 times in the range of 135°-225°, thereby ensuring that the local key parts of the casting are fully filled, solving the defect of incomplete filling of the casting, and ensuring the implementation of the casting process.

[0049] Subsequently, the casting sand mold 200 is flipped to the 135° position by using the rotating part 2, and the positioning part 3 is inserted into the first positioning hole 11 and the second positioning hole 21 corresponding to 135° in sequence, so that the casting sand mold 200 is fixed at the 135° position for 4 seconds. At this time, the flipping angle of the casting sand mold 200 is accurately positioned to ensure that the exhaust plug of the casting sand mold 200 is at the top, so that the gas generated in the casting sand mold 200 during the casting process can be discharged through the exhaust plug (the left cylinder hole of the V-shaped cylinder body) to solve the defects such as bubbles and sand holes in the casting blank.

[0050] Then, pull out the positioning piece 3 and use the rotating piece 2 to flip the casting sand mold 200 to the 225° position, and insert the positioning piece 3 into the first positioning hole 11 and the second positioning hole 21 corresponding to 225° in turn, so that the casting sand mold 200 is fixed at the 225° position for 4 seconds, so that the gas in the cylinder hole on the right side of the V-shaped cylinder block can be discharged, and then pull out the positioning piece 3 and rotate the casting sand mold 200 to the 180° position, insert the positioning piece 3 into the first positioning hole 11 and the second positioning hole 21 corresponding to 180° in turn, and discharge the remaining gas in the casting sand mold 200 through the exhaust plug. After standing still for 15 seconds, pull out the positioning piece 3 and rotate the casting sand mold 200 to the 0° position, finally insert the positioning piece 3 into the first positioning hole 11 and the second positioning hole 21 corresponding to 0° in turn, and keep the rotating piece 2 fixed until the casting in the casting sand mold 200 is cooled and formed.

[0051] It should be noted that if the casting sand mold 200 needs to be flipped to other angles, the rotating member 2 can be provided with second positioning holes 21 corresponding to the corresponding angles, which will not be explained one by one here.

[0052] According to the flipping tool 100 of the embodiment of the utility model, a rotating part 2 is provided which is specially used for fixing and installing the casting sand mold 200. When the casting sand mold 200 needs to be rotated, the casting sand mold 200 can be flipped by driving the rotating part 2. The operation is simple and convenient, and the flipping operation can be completed by one person. At the same time, a first positioning hole 11 is provided on the mounting seat 1, and a plurality of second positioning holes 21 corresponding to the first positioning hole 11 are provided on the rotating part 2. When a certain angle needs to be positioned, the rotating part 2 is rotated so that the first positioning hole 11 is opposite to the corresponding second positioning hole 21, and then the positioning part 3 is inserted into the first positioning hole 11 and the second positioning hole 21 in sequence, so as to facilitate the precise positioning and fixation of the flipping angle of the casting sand mold 200.

[0053] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 3 and Figure 5As shown, the mounting base 1 has a first mounting plate 12 and a second mounting plate 13 that are arranged opposite to and spaced apart from each other. The first mounting plate 12 and the second mounting plate 13 jointly define a first mounting space. The rotating member 2 is rotatably arranged in the first mounting space, and at least one of the first mounting plate 12 and the second mounting plate 13 is provided with a first positioning hole 11.

[0054] Specifically, the rotating member 2 is located on the first mounting plate 12 and the second mounting plate 13 to define a first mounting space. Optionally, one end of the rotating member 2 is rotatably provided on the first mounting plate 12, and the other end is rotatably provided on the second mounting plate 13, so that the rotating member 2 can rotate in the first mounting space. Further, at least one of the first mounting plate 12 and the second mounting plate 13 is provided with a first positioning hole 11, that is, only the first mounting plate 12 can be provided with the first positioning hole 11, or only the second mounting plate 13 can be provided with the first positioning hole 11, or the first The mounting plate 12 and the second mounting plate 13 are both provided with a first positioning hole 11, and the rotating member 2 is provided with a plurality of correspondingly arranged second positioning holes 21 according to the first positioning holes 11 on the first mounting plate 12 and / or the second mounting plate 13. In this way, when the first mounting plate 12 and the second mounting plate 13 are both provided with the first positioning holes 11, the two limiting members 7 are respectively inserted into the first positioning holes 11 of the first mounting plate 12 and the second mounting plate 13 and extend into the corresponding second positioning holes 21 of the rotating member 2, which is beneficial to improve the stability of the casting sand mold 200 when it is flipped to the corresponding angle and fixed.

[0055] In some embodiments of the present invention, Figure 1 , Figure 2 , Figure 3 and Figure 6 As shown, the rotating member 2 includes a first rotation positioning plate 22 and a second rotation positioning plate 23 that are arranged opposite to and spaced apart from each other. The first rotation positioning plate 22 is opposite to and spaced apart from the first mounting plate 12, and when the first mounting plate 12 is provided with a first positioning hole 11, the first rotation positioning plate 22 has a plurality of second positioning holes 21 arranged corresponding to the first positioning hole 11, and the second rotation positioning plate 23 is opposite to and spaced apart from the second mounting plate 13, and when the second mounting plate 13 is provided with a first positioning hole 11, the second rotation positioning plate 23 has a plurality of second positioning holes 21 arranged corresponding to the first positioning hole 11.

[0056] Specifically, the first rotation positioning plate 22 and the second rotation positioning plate 23 both rotate with the rotating member 2. If the first mounting plate 12 is provided with a first positioning hole 11, the first rotation positioning plate 22 has a plurality of second positioning holes 21 arranged corresponding to the first positioning hole 11. If the first mounting plate 12 is not provided with the first positioning hole 11, the first rotation positioning plate 22 is not provided with the second positioning hole 21. Similarly, if the second mounting plate 13 is provided with a first positioning hole 11, the second rotation positioning plate 23 has a plurality of second positioning holes 21 arranged corresponding to the first positioning hole 11. If the second mounting plate 13 is not provided with the first positioning hole 11, the second rotation positioning plate 23 is not provided with the second positioning hole 21. It can be understood that when the first mounting plate 12 and the second mounting plate 13 When the first positioning holes 11 are set at the same position, the first rotation positioning plate 22 and the second rotation positioning plate 23 are centrally symmetrically provided with the same number of second positioning holes 21. In this way, when the rotating member 2 is rotated to a certain angle so that the first positioning hole 11 on the first mounting plate 12 is opposite to the second positioning hole 21 on the first rotation positioning plate 22, the first positioning hole 11 on the second mounting plate 13 is also opposite to the second positioning hole 21 on the second rotation positioning plate 23. At this time, the two limiting members 7 are respectively inserted into the first positioning holes 11 of the first mounting plate 12 and the second mounting plate 13 and extend into the corresponding second positioning holes 21 of the first rotation positioning plate 22 and the second rotation positioning plate 23, which is beneficial to improve the stability of the casting sand mold 200 when it is flipped to the corresponding angle and fixed.

[0057] In some embodiments of the present invention, Figure 1-Figure 3 As shown, the rotating member 2 also includes a first connecting plate 24 and a second connecting plate 25 that are relatively and spaced apart. The first connecting plate 24 and the second connecting plate 25 are both fixedly connected between the first rotating positioning plate 22 and the second rotating positioning plate 23 to jointly define a second installation space, and the casting sand mold 200 is fixedly arranged in the second installation space.

[0058] Specifically, the rotating member 2 is constructed as a frame structure composed of a first connecting plate 24, a second connecting plate 25, a first rotating positioning plate 22 and a second rotating positioning plate 23, and the middle area of ​​the frame structure is a defined second installation space, wherein the casting sand mold 200 is fixedly arranged in the second installation space. Optionally, a positioning portion and a mounting portion are provided on the first connecting plate 24 and / or the second connecting plate 25, the positioning portion is used for cooperating with the casting sand mold 200 for positioning, and the mounting portion is used for fixing the casting sand mold 200 on the rotating member 2, thereby realizing the installation and fixation of the casting sand mold 200. When the rotating member 2 rotates, it is ensured that the casting sand mold 200 can rotate with the rotating member 2, avoiding relative movement between the rotating member 2 and the casting sand mold 200, thereby ensuring that the rotation angle of the rotating member 2 is the rotation angle of the casting sand mold 200.

[0059] In some embodiments of the present invention, Figure 1-Figure 3As shown, the first connecting plate 24 and / or the second connecting plate 25 have lightening holes 26 .

[0060] Specifically, the weight-reducing holes 26 can be set only on the first connecting plate 24, or only on the second connecting plate 25, or on both the first connecting plate 24 and the second connecting plate 25. The number of shock-absorbing holes can be one or more, and the position of the weight-reducing holes 26 is selected and set according to actual needs, so as to ensure that the mass center of the rotating part 2 coincides with the flipping center by adjusting the position and number of the weight-reducing holes 26. It should be noted that when the first connecting plate 24 and the second connecting plate 25 are provided with the weight-reducing holes 26 at the same time, the weight deviation of the first connecting plate 24 and the second connecting plate 25 is less than 1 kg. With such a setting, the effect of light rotation can be achieved, so that the operator can operate it with one hand, thereby meeting the requirement of fast flipping of the casting sand mold 200.

[0061] In some embodiments of the present invention, the present invention further comprises a counterweight block, which is fixed on the first connecting plate 24 and / or the second connecting plate 25 .

[0062] Specifically, configuration blocks can also be set on the first connecting plate 24 and / or the second connecting plate 25. For example, a counterweight block can be set only on the first connecting plate 24, or only on the second connecting plate 25, or on both the first connecting plate 24 and the second connecting plate 25. It can be understood that the position and number of the configuration blocks can be flexibly adjusted as needed, so that the overall center of gravity of the rotating part 2 and the casting sand mold 200 (containing castings inside) can be adjusted at any time by adjusting the position and number of the counterweight blocks, which is suitable for sharing by multiple products. After adjusting the counterweight, the flipping tooling 100 can still be operated by one person with one hand, meeting the needs of rapid flipping.

[0063] In some embodiments of the present invention, Figure 1-Figure 4 As shown, it also includes: a flip handwheel 4 and a rotating shaft 5. The mounting seat 1 has a mounting hole 15. The rotating shaft 5 passes through the mounting hole 15, and the rotating shaft 5 is fixedly connected between the flip handwheel 4 and the rotating member 2. The flip handwheel 4 is suitable for driving the rotating member 2 to rotate through the rotating shaft 5.

[0064] It should be noted that the existing process usually uses multiple coordinated flip casting sand molds 200, and the flipping speed is slow. If the flipping and positioning of three specific angles (135°, 225°, 180°) cannot be completed within a certain time (for example, within 5 seconds), the slow flipping speed will cause the aluminum water temperature to drop, the aluminum alloy cylinder body will not be fully filled, and the product quality will be affected.

[0065] Based on this, the present application provides a flip handwheel 4. For example, the first mounting plate 12 of the mounting seat 1 is provided with a mounting hole 15. The rotating shaft 5 is passed through the mounting hole 15 and is fixedly connected between the flip handwheel 4 and the rotating member 2. With such a configuration, the rotating shaft 5 can be driven to drive the rotating member 2 to rotate by rotating the flip handwheel 4. The operation method is simple and reliable. By providing a large-sized flip handwheel 4, the driving force can be reduced. For example, only less than 15kg of force is needed to flip an object weighing 1500kg during operation. Free and rapid flipping by a single person can be realized, so that the casting sand mold 200 can be flipped in a shorter time, which is beneficial to a fuller filling of the aluminum alloy cylinder body, thereby improving product quality.

[0066] It should be noted that the rotation center of the rotating shaft 5 coincides with the mass center of the rotating part 2 together with the casting sand mold 200 (containing the casting inside), and the smaller the turning radius, the better. Such a setting can transmit large torque while ensuring safety and reliability. At the same time, the torque can be reduced as much as possible by reducing the radius of the rotating shaft 5. Through calculation and analysis, when designing the rotating shaft 5, a rotating shaft 5 with a minimum diameter of 36mm must be selected to meet the 1500kg turnover requirement.

[0067] In some embodiments of the present invention, Figure 4 As shown, it also includes: a bearing, the bearing is fixed in the mounting hole 15, and the rotating shaft 5 passes through the bearing and can rotate relative to the bearing. Figure 4 As shown, a support bearing 61 and a booster bearing 62 are fixedly disposed in the mounting hole 15, and the rotating shaft 5 is sequentially passed through the support bearing 61 and the booster bearing 62 and fixedly connected between the flip hand wheel 4 and the rotating member 2. With such an arrangement, the support bearing 61 can support the weight of the casting sand mold 200 and reduce the radial friction caused by the weight, while the booster bearing 62 can reduce the axial friction, thereby making the rotating member 2 rotate more quickly.

[0068] In some embodiments of the present invention, Figure 1-Figure 6 As shown, it also includes: a limit member 7, the mounting seat 1 also has a first limit hole 14, the rotating member 2 has a second limit hole 27 corresponding to the first limit hole 14, the limit member 7 is suitable for passing through the first limit hole 14, and at least part of the structure of the limit member 7 is suitable for extending into the corresponding second limit hole 27 to limit the rotation of the rotating member 2.

[0069] Specifically, the first mounting plate 12 of the mounting seat 1 is provided with a first limiting hole 14, and the first rotation positioning plate 22 of the rotating member 2 is provided with a second limiting hole 27 corresponding to the first limiting hole 14. Figure 5 and Figure 6As shown, the first mounting plate 12 and the first rotation positioning plate 22 are respectively provided with four first limit holes 14 and second limit holes 27, and when the casting sand mold 200 of the rotating part 2 is rotated to 0° or 180°, the first limit holes 14 are opposite to the second limit holes 27. It can be understood that the second mounting plate 13 and the second rotation positioning plate 23 can also be provided with the first limit holes 14 and the second limit holes 27 correspondingly, which will not be repeated here.

[0070] Further, as a specific example, when the casting sand mold 200 is fixed at the 225° position for 4 seconds and the gas is discharged from the right cylinder hole of the V-shaped cylinder body, the positioning member 3 is pulled out and the casting sand mold 200 is rotated to the 180° position, and the positioning member 3 is inserted into the first positioning hole 11 and the second positioning hole 21 corresponding to 180° in sequence. At the same time, the limiting member 7 is inserted into the first limiting hole 14 and the second limiting hole 27 in sequence to ensure the stability of the fixation, and then the remaining gas in the casting sand mold 200 is discharged through the exhaust plug. After standing still for 15 seconds, the positioning member 3 and the limiting member 7 are pulled out, and the casting sand mold 200 is rotated to the 0° position. Finally, the limiting member 7 is inserted into the first limiting hole 14 and the second limiting hole 27 in sequence, and the rotating member 2 is kept fixed until the casting in the casting sand mold 200 is cooled and formed. With this arrangement, the limiting member 7 can play a fixing role in the cooling process of the casting sand mold 200, avoid relative movement of the casting sand mold 200, and ensure the reliability of the fixation.

[0071] It should be noted that if Figure 5 As shown, the first limiting hole 14 and the mounting hole 15 are non-equidistant and error-proof designs, thereby preventing the casting sand mold 200 from being placed in the wrong direction.

[0072] In some embodiments of the present invention, Figure 7 As shown, the positioning member 3 is a positioning pin.

[0073] Specifically, the positioning member 3 can be constructed as a positioning pin shaft, the positioning pin shaft has a limiting steel ball, the side wall of the positioning pin shaft has a limiting channel, the limiting steel ball can move in the limiting channel, and there is a spring between the limiting steel ball and the bottom wall of the limiting channel. When the limiting steel ball is squeezed, the limiting steel ball moves toward the inside of the positioning pin shaft. When the limiting steel ball is not squeezed, under the action of the spring, at least part of the limiting steel ball extends out of the positioning pin shaft, and the diameter of one end of the limiting hole channel away from the bottom wall of the limiting channel is smaller than the diameter of the limiting steel ball, thereby ensuring that the limiting steel ball can protrude a certain part of the positioning pin shaft while preventing the limiting steel ball from falling out of the positioning pin shaft.

[0074] With such arrangement, when the locating pin is inserted into the first locating hole 11 and the second locating hole 21 in sequence, the limiting steel ball finally abuts against the inner wall of the second locating hole 21, thereby fixing the locating pin to realize the stopping function of the rotating part 2 without causing rotation interference.

[0075] Furthermore, a 10° conical surface is provided at the joint where the positioning pin and the first positioning hole 11 are assembled. Such a configuration can ensure that the conical surface fits the first positioning hole 11, so that the positioning accuracy reaches within 0.1 mm, which is very high.

[0076] In the description of the present utility model, it is necessary to understand that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0077] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0079] Although the embodiments of the present invention have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A turning tool for casting sand mold, characterized in that: include: A mounting seat, wherein the mounting seat has a first positioning hole; A rotating member and a positioning member, wherein the rotating member is rotatably arranged on the mounting seat, the casting sand mold is fixedly arranged on the rotating member, the rotating member has a plurality of second positioning holes arranged corresponding to the first positioning holes, and the first positioning hole is selectively opposite to one of the plurality of second positioning holes by rotating the rotating member, the positioning member is suitable for being inserted into the first positioning hole, and at least part of the structure of the positioning member is suitable for extending into the corresponding second positioning hole to limit the rotation of the rotating member.

2. The turning tool according to claim 1, characterized in that: The mounting seat has a first mounting plate and a second mounting plate that are arranged opposite to and spaced apart from each other, the first mounting plate and the second mounting plate jointly define a first mounting space, the rotating member is rotatably arranged in the first mounting space, and at least one of the first mounting plate and the second mounting plate is provided with the first positioning hole.

3. The turning tool according to claim 2, characterized in that: The rotating member comprises a first rotating positioning plate and a second rotating positioning plate which are arranged oppositely and spaced apart from each other, the first rotating positioning plate being opposite to and spaced apart from the first mounting plate, and when the first mounting plate is provided with the first positioning hole, the first rotating positioning plate has a plurality of second positioning holes which are arranged correspondingly to the first positioning holes; The second rotation positioning plate is opposite to and spaced from the second mounting plate, and when the second mounting plate is provided with the first positioning hole, the second rotation positioning plate has a plurality of second positioning holes arranged corresponding to the first positioning holes.

4. The turning tool according to claim 3, characterized in that: The rotating member also includes a first connecting plate and a second connecting plate that are arranged opposite to and spaced apart from each other. The first connecting plate and the second connecting plate are both fixedly connected between the first rotating positioning plate and the second rotating positioning plate to jointly define a second installation space. The casting sand mold is fixedly arranged in the second installation space.

5. The turning tool according to claim 4, characterized in that: The first connecting plate and / or the second connecting plate has a weight-reducing hole.

6. The turning tool according to claim 5, characterized in that: Also includes: A counterweight block is fixedly mounted on the first connecting plate and / or the second connecting plate.

7. The turning tool according to any one of claims 1 to 6, characterized in that: Also includes: The flip hand wheel and the rotating shaft, the mounting seat has a mounting hole, the rotating shaft is passed through the mounting hole, and the rotating shaft is fixedly connected between the flip hand wheel and the rotating member, and the flip hand wheel is suitable for driving the rotating member to rotate through the rotating shaft.

8. The turning tool according to claim 7, characterized in that: Also includes: The bearing is fixed in the mounting hole, and the rotating shaft passes through the bearing and can rotate relative to the bearing.

9. The turning tool according to any one of claims 1 to 6, characterized in that: It also includes: a limiting member, the mounting seat also has a first limiting hole, the rotating member has a second limiting hole corresponding to the first limiting hole, the limiting member is suitable for being inserted into the first limiting hole, and at least part of the structure of the limiting member is suitable for extending into the corresponding second limiting hole to limit the rotation of the rotating member.

10. The turning tool according to claim 1, characterized in that: The positioning member is a positioning pin shaft.

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