A resin sand molding mold stripping device for large castings

Abstract

The application relates to the technical field of casting, in particular to a resin sand molding mold stripping device convenient for large casting, which has the following technical scheme: an annular track is arranged on the ground and below the horizontal plane, an inner surrounding area of the annular track is used to form a placing station for placing a mold and a sand box; a positioning assembly is slidably arranged in the annular track; and a pressing assembly is arranged on the positioning assembly, the positioning assembly is used to drive the pressing assembly to move above lugs on the periphery of the mold, and the pressing assembly is used to press the lugs of the mold to fix the mold. The application has the advantages that manual knocking on the mold is not needed for many times, the mold is not easily damaged, the whole process is fast and convenient, the stripping action can be completed only by once hoisting, the production efficiency and the overall molding quality are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of casting, in particular to a resin sand molding mold stripping device for large castings. BACKGROUND

[0002] Resin sand casting is a casting process that uses synthetic resin as a sand binder. The specific process is to mix raw sand with resin, curing agent, etc. according to a certain proportion to form resin sand, then make a model core, fill the resin sand into the mold sand box, and cure the resin through self-hardening or heating, blowing to make it irreversible Cross-linking reaction to give the mold or core the necessary strength, and form a mold and a casting cavity, and finally pour the metal liquid into the mold, cool and solidify, knock out and clean to get the casting.

[0003] At present, in the casting industry, resin sand manual molding generally uses special molding molds matched with special sand boxes, and uses a crane to lift and strip. During the lifting process of the crane, especially in the resin sand molding of medium and large castings, due to the large weight, the molding resin sand and the molding mold are tightly bonded, and the molding mold and the special sand box are often connected together and cannot be smoothly stripped. Therefore, it is necessary to continuously knock the mold around during the lifting and stripping process to assist in stripping, which damages the mold, and the manual knocking of the mold is also asymmetric, which affects the molding quality and production efficiency.

[0004] Therefore, it is necessary to provide a resin sand molding stripping device to meet the production needs of single-piece small-batch medium and large castings, and therefore it is necessary to improve the prior art.

[0005] The above information is given as background information only to assist with understanding the present disclosure, and does not determine or acknowledge whether any of the above content can be used as prior art with respect to the present disclosure. SUMMARY

[0006] The present application provides a resin sand molding mold stripping device for large castings to solve the problems in the prior art.

[0007] To achieve the above purpose, the present application provides the following technical solutions:

[0008] A resin sand molding mold stripping device for large castings, comprising:

[0009] An annular track is arranged on the ground and below the horizontal plane, and the annular track is arranged around the area to form a placing station for placing the mold and the sand box;

[0010] A positioning assembly is slidably arranged in the annular track;

[0011] And a pressing assembly is arranged on the positioning assembly, the positioning assembly is used to drive the pressing assembly to move above the lug of the mold, and the pressing assembly is used to press the lug of the mold to fix the mold.

[0012] Preferably, the positioning assembly comprises

[0013] A positioning block is arranged on the positioning assembly, and a limiting groove is arranged on the positioning block;

[0014] The top of the annular track has a limiting part protruding towards two sides respectively, and the limiting part is embedded in the limiting groove to limit the positioning block from loosening the annular track.

[0015] Preferably, the pressing assembly comprises:

[0016] A screw rod is threadedly connected to one end of the positioning assembly;

[0017] A cushion block is arranged on the positioning assembly and adjacent to the screw rod;

[0018] And a pressing block has a long hole for the screw rod to pass through, one end of the pressing block is overlapped on the cushion block, and the other end of the pressing block is used to overlap on the lug, and the screw rod is used to press the pressing block to fix.

[0019] Preferably, the positioning assembly is a plurality of groups, and the plurality of groups of the positioning assembly are arranged around the annular track.

[0020] Preferably, the positioning assembly is fixed on the annular track by a side screw.

[0021] Preferably, the positioning assembly further comprises a guide component, and the guide component comprises

[0022] A mounting seat is rotatably arranged on one side of the positioning block;

[0023] A first guide wheel is rotatably arranged on the mounting seat and rolls with the inner side of the annular track;

[0024] And a second guide wheel is rotatably arranged on the mounting seat and rolls with the outer side of the annular track.

[0025] Preferably, the positioning assembly further comprises a guide component, and the guide component comprises

[0026] A third guide wheel is rotatably arranged on the positioning member and rolls with the inner side of the annular track;

[0027] And a fourth guide wheel is rotatably arranged on the positioning member, the number of the fourth guide wheel is two, the fourth guide wheel forms a triangular layout with the third guide wheel, and the fourth guide wheel rolls with the outer side of the annular track.

[0028] Preferably, the positioning assembly further comprises a displacement component, which comprises:

[0029] a displacement motor arranged on the positioning block;

[0030] and a displacement gear connected with the output shaft of the displacement motor, the ring-shaped track is provided with meshing teeth along the length direction, and the displacement gear is engaged with the meshing teeth.

[0031] Preferably, the positioning assembly further comprises a locking component, which comprises:

[0032] a locking cylinder fixedly arranged on the positioning block;

[0033] and a locking block slidingly arranged on the positioning block and connected with the telescopic rod of the locking cylinder, the locking block is provided with locking teeth which are engaged with the meshing teeth, and the locking cylinder is used to drive the locking block to approach or move away from the ring-shaped track, so as to lock or slide the positioning block relative to the ring-shaped track.

[0034] Preferably, the bottom of the ring-shaped track is provided with a reinforcing plate embedded in the ground.

[0035] Compared with the prior art, the present application has the following beneficial effects: the resin sand molding mold stripping device for large castings provided by the present application can adjust the position of the positioning assembly on the ring-shaped track, and then press and reinforce the mold of different sizes. During the process of lifting the product or the resin sand layer, the mold can be provided with downward pressure support, so that the mold and the sand box can be smoothly separated. During this process, manual knocking of the mold is not required multiple times. On the one hand, the problem of damage to the mold caused by multiple manual knocking during the stripping process is solved. On the other hand, the whole process is fast and convenient, and the stripping action can be completed only once by lifting, which overcomes the uneven stress caused by manual knocking and optimizes the production efficiency and promotes the overall modeling quality.

[0036] The present application has other characteristics and advantages, which will be apparent from or set forth in the accompanying drawings and the following detailed description, which together serve to explain certain principles of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0037] In order to make the technical solutions in the embodiments of the present application or the prior art clearer, the accompanying drawings needed in the embodiments or prior art description will be briefly introduced. Obviously, the accompanying drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative effort based on these drawings.

[0038] Figure 1 is a structural schematic diagram of a mold starting device in the embodiment one of the present application;

[0039] Figure 2 is a structural schematic diagram of a mold and a sand box in the embodiment one of the present application;

[0040] Figure 3 is a structural schematic diagram of a ring track, a positioning assembly and a pressing assembly in the embodiment one of the present application;

[0041] Figure 4 is a structural schematic diagram of a mold starting device in the embodiment two of the present application;

[0042] Figure 5 is a structural schematic diagram of a ring track, a positioning assembly and a pressing assembly in the embodiment two of the present application;

[0043] Figure 6 is an assembly relationship schematic diagram of a positioning assembly in the embodiment two of the present application;

[0044] Figure 7 is a structural schematic diagram of a positioning block and a guide component in the embodiment three of the present application.

[0045] Reference signs:

[0046] 1, ring track; 11, reinforcing plate; 12, limiting part; 13, meshing tooth;

[0047] 2, positioning assembly; 21, positioning block; 211, limiting groove; 22, side screw; 23, displacement component; 231, displacement gear; 232, displacement motor; 24, locking component; 241, locking cylinder; 242, locking block;

[0048] 3, pressing assembly; 31, screw rod; 32, cushion block; 33, pressing block;

[0049] 4, lug;

[0050] 5, guide component; 51, mounting seat; 52, first guide wheel; 53, second guide wheel; 54, third guide wheel; 55, fourth guide wheel. DETAILED DESCRIPTION

[0051] To make the objectives, features, and advantages of this invention more apparent and understandable, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this invention.

[0052] In the description of this invention, it should be understood that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component present simultaneously. When a component is considered to be "set" on another component, it can be directly set on the other component or there may be an intermediate component present simultaneously.

[0053] Furthermore, terms such as “long,” “short,” “inner,” and “outer” indicate orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings. They are used only for the purpose of describing the present invention and are not intended to indicate or imply that the device or component referred to must have this specific orientation or operate in a specific orientational configuration. Therefore, they should not be construed as limitations of the present invention.

[0054] The following is in conjunction with the appendix Figures 1-7 The technical solution of the present invention will be further illustrated through specific embodiments.

[0055] Example 1:

[0056] Please refer to Figure 1 This invention provides a device for easily removing resin sand molding molds for large castings, including an annular track 1, a positioning component 2, and a clamping component 3.

[0057] In this design, the annular track 1 is positioned on the ground, the positioning component 2 is mounted on the annular track 1, and the clamping component 3 is mounted on the positioning component 2. In application, the size of the annular track 1 is typically larger than the mold. In this case, the mold and sandbox can be placed within the internal area formed by the annular track 1 using a hoisting method. Because the positioning component 2 is slidably mounted on the annular track 1, it can drive the clamping component 3 to adjust its position on the annular track 1. Therefore, both the clamping component 3 and the positioning component 2 are located close to the outer periphery of the mold, and in combination... Figure 2 The mold is usually provided with lugs 4 on the side. The positioning component 2 can drive the clamping component 3 to move above the lugs 4 on the side of the mold, and press down the lugs 4 through the clamping component 3 so that the mold is vertically restricted and thus fixed.

[0058] At this point, in the above scheme, in the conventional demolding process, it is usually necessary to hoist the sand box and separate the sand box and the mold by knocking the lug 4 part downward; however, in the present embodiment, because the pressing assembly 3 has a downward pressing effect, during the hoisting of the sand box, the mold is equivalent to a downward limiting pressure, so that the sand box and the mold can be separated more smoothly without the need for multiple knocking, the process is convenient and fast, time and labor are saved.

[0059] At the same time, it can be understood that because the shapes of different castings are different, the shapes of the corresponding manufacturing molds and the layout of the lugs 4 will also be different, so by adjusting the position of the positioning assembly 2 on the annular track 1, the mold lifting requirements of molds of different specifications can be well adapted, the structure is flexible to use, and the versatility is good.

[0060] Further, in order to play a guiding role, the annular track 1 is arranged in an oval closed loop in the present embodiment, and in other embodiments, it can also be arranged in a circular contour, which is not specifically limited here. In the process of setting the annular track 1, a ditch can be first set on the ground, and the annular track 1 is set inside the ditch. At this time, the annular track 1 is set on the ground and below the horizontal plane, and because the annular track 1 is arranged in a closed loop, it can form a flat area on the ground. At this time, the inner surrounding area of the annular track 1 can be used to place the mold and the sand box. For convenience of description, this area is defined as a placement station, and the mold lifting operation of the mold and the sand box is carried out at the placement station.

[0061] In addition, referring to Figure 3 In order to improve the installation stability of the annular track 1, the bottom of the annular track 1 is provided with a reinforcing plate 11 embedded in the ground. Specifically, the reinforcing plate 11 is welded and fixed with the body of the annular track 1 and extends towards the opposite sides of the annular track 1 respectively. The reinforcing plate 11 can be pre-buried below the ground by pouring concrete. At this time, the annular track 1 is horizontally arranged, so that the annular track 1 can be more firmly arranged, thereby providing sufficient supporting force.

[0062] Further, because the annular track 1 needs to bear the pulling force during mold lifting, in order to optimize the structural strength of the annular track 1, in the present embodiment, the annular track 1 mainly includes a vertical plate and a horizontal plate, wherein the reinforcing plate 11 is fixedly installed at the bottom of the vertical plate, and the horizontal plate is fixedly installed at the top of the vertical plate, forming a similar I-beam structure. At this time, the structure of the annular track 1 is relatively firm and can bear a large pulling force.

[0063] On this basis, in order to realize the sliding setting of the positioning assembly 2, the positioning assembly 2 mainly comprises a positioning block 21 in the embodiment, and a limiting groove 211 penetrating through the opposite sides is arranged on the positioning block 21, and the opening profile of the limiting groove 211 is matched with the top profile of the annular track 1.

[0064] In the embodiment, since the horizontal plate is fixedly installed at the top of the vertical plate, the top of the annular track 1 is in a T-shaped profile structure, at this time, the limiting groove 211 is also arranged in a T-shaped profile form, by embedding the top of the annular track 1 into the limiting groove 211, and the annular track 1 and the positioning block 21 are in mutual sliding abutment, on the one hand, under the guidance of the annular track 1, the positioning block 21 can slide along the length direction of the annular track 1, on the other hand, at this time, the horizontal plate forms a limiting part 12 compared with the protruding part of the vertical plate towards the two sides, the limiting part 12 is embedded into the limiting groove 211, which can limit the positioning block 21 from loosening the annular track 1, at this time, the positioning block 21 can stably slide on the annular track 1, thereby realizing the position adjustment of the positioning assembly 2.

[0065] Continuing to refer to Figure 3 , the pressing assembly 3 is arranged on the positioning block 21, specifically, the pressing assembly 3 comprises a screw rod 31, a cushion block 32 and a pressing block 33. In order to realize the downward pressing of the lug 4, first, the pressing block 33 is arranged in a strip block shape, then the cushion block 32 is placed on the positioning assembly 2, and one end of the pressing block 33 is overlapped on the cushion block 32, and the other end is overlapped on the lug 4 of the mold.

[0066] At the same time, a long hole is also arranged through the pressing block 33, the long hole extends along the length direction of the pressing block 33, at this time, the screw rod 31 is vertically arranged and penetrates through the long hole, at this time, the cushion block 32 is arranged adjacent to the screw rod 31, further, the head of the screw rod 31 is located at the upper end, and the other end of the screw rod 31 is threadedly connected with the positioning assembly 2, specifically, in the embodiment, a threaded hole can be formed at the top of the positioning block 21, then one end of the screw rod 31 is threadedly connected with the threaded hole, so as to realize the installation of the screw rod 31.

[0067] Based on the above setting, when it is needed to fix the lug 4, the screw rod 31 can be rotated to move downward until the head of the screw rod 31 presses and fixes the pressing block 33, at this time, the pressing block 33 is supported by the cushion block 32, which is equivalent to forming a lever structure, thereby pressing the lug 4 of the mold, so as to achieve the purpose of pressing the mold.

[0068] Further, referring back to Figure 1To optimize the overall fixing effect of the mold, the positioning assembly 2 can be provided in multiple groups, and the specific number of the positioning assembly 2 should be adapted to the number of the lugs 4, for example, in the embodiment, the lugs 4 on the mold are four, and therefore the number of the positioning assembly 2 is also set to four, which are arranged at the four lugs 4 one by one, at this time, the multiple groups of the positioning assembly 2 are arranged around the annular track 1 and provide multi-directional pressing effect, and the fixing effect of the mold is optimized and improved.

[0069] With reference to the foregoing Figure 3 To avoid loosening of the positioning assembly 2 during the pressing positioning process, the positioning assembly 2 is fixed on the annular track 1 by a side screw 22, specifically, a transversely arranged threaded hole can be first formed on the positioning block 21, and the side screw 22 is threadedly connected in the threaded hole, and a positioning hole opposite to the side screw 22 is formed on the annular track 1, the side screw 22 is inserted into the positioning hole to lock the positioning block 21, so that the positioning assembly 2 is not easy to loosen during the pressing positioning process, and the structural stability is optimized and improved.

[0070] The implementation principle of the embodiment is that the annular track 1 is arranged on the ground, and the positioning assembly 2 and the pressing assembly 3 are arranged on the track, on the one hand, the mold can be fixed on the ground by pressing, which is beneficial to the mutual separation of the sand box and the mold, and is fast and efficient. The possibility of damage to the mold caused by manual knocking is reduced, and the modeling quality and production efficiency are optimized and improved; on the other hand, according to different shapes and sizes of the mold structure, the position of the positioning assembly 2 on the annular track 1 can be adjusted to meet the fixing needs of different molds, which is flexible to use and has strong structural versatility.

[0071] Embodiment two:

[0072] On the basis of embodiment one, the features not explained in the embodiment are explained in embodiment one, and will not be described here again. The difference between the embodiment and embodiment one is that the positioning assembly 2 is different from that of embodiment one, wherein in the embodiment, the positioning assembly 2 not only includes the positioning block 21, but also includes the guide part 5.

[0073] With reference to the foregoing Figure 4 , Figure 5 and Figure 6The guiding component 5 comprises a mounting base 51, a first guiding wheel 52 and a second guiding wheel 53. The mounting base 51 is hingedly connected to the positioning block 21 through a rotating shaft and is located on one side of the positioning block 21. The mounting base 51 can swing relative to the positioning block 21. The first guiding wheel 52 and the second guiding wheel 53 are respectively rotatably mounted on the mounting base 51. The first guiding wheel 52 is in rolling contact with the inner side of the annular track 1. The second guiding wheel 53 is in rolling contact with the outer side of the annular track 1.

[0074] Under the action of the first guiding wheel 52 and the second guiding wheel 53, the positioning assembly 2 is provided with rolling guidance. The mounting base 51 rotatably arranged on the positioning block 21 can swing by an angle to obtain a degree of freedom when encountering an arc motion. The positioning assembly 2 moves more smoothly on the annular track 1 with less resistance and more convenient position adjustment.

[0075] Optionally, the number of the guiding components 5 can be two groups. The two groups of guiding components 5 are respectively arranged on opposite sides of the positioning block 21 along the length direction of the annular track 1. The two groups of guiding components 5 can further optimize the stability of the positioning assembly 2 when moving.

[0076] Referring to Figure 5 and Figure 6 The positioning assembly 2 further comprises a displacement component 23. The displacement component 23 comprises a displacement motor 232 and a displacement gear 231. The displacement motor 232 is fixedly mounted on the positioning block 21. The displacement gear 231 is fixedly mounted on the output shaft of the displacement motor 232. The displacement motor 232 can drive the displacement gear 231 to rotate. The annular track 1 is provided with engagement teeth 13 along the length direction. The displacement gear 231 is in engagement with the engagement teeth 13.

[0077] Based on the above structure, the displacement motor 232 is started. Under the mutual engagement of the displacement gear 231 and the engagement teeth 13, the positioning assembly 2 can be pushed to move on the annular track 1. The torque output direction and angle of the displacement motor 232 are controlled to automatically adjust the position of the positioning assembly 2. The use is more convenient and efficient. Preferably, the displacement motor 232 can be a servo motor structure to output accurate displacement motion.

[0078] In addition, the locking mode of the positioning assembly 2 and the annular track 1 is different from that in Embodiment One. In this embodiment, the positioning assembly 2 further comprises a locking component 24, which comprises a locking cylinder 241 and a locking block 242. The locking cylinder 241 is fixedly installed on the positioning block 21, and a sliding groove is formed in the positioning block 21 for sliding installation of the locking block 242. The locking block 242 is connected with the extension rod of the locking cylinder 241. One end of the sliding groove faces the meshing teeth 13, so that one end of the locking block 242 also faces the meshing teeth 13. Meanwhile, the locking block 242 is integrally connected with locking teeth that are mutually engaged with the meshing teeth 13. The locking cylinder 241 is used to drive the locking block 242 to move close to or away from the annular track 1.

[0079] On the one hand, when the locking block 242 moves close to the annular track 1, the meshing teeth 13 can be engaged with the locking teeth, so as to lock the positioning block 21 on the annular track 1, and prevent the positioning assembly 2 from sliding and deviating during use.

[0080] On the other hand, when the locking block 242 moves away from the annular track 1, the meshing teeth 13 can be disengaged from the locking teeth, so as to unlock the positioning block 21 from the annular track 1, and enable the positioning assembly 2 to be adjusted on the annular track 1. Compared with the locking mode of the side screw 22 in Embodiment One, the locking mode of the locking component 24 is more automatic and convenient to use. It can be understood that the side screw 22 in the locking scheme of Embodiment One can also be understood as another embodiment of the locking component 24.

[0081] The implementation principle of this embodiment is that the positioning assembly 2 can move more smoothly during adjustment by the guiding component 5, and the position adjustment of the positioning assembly 2 is more automatic, convenient and accurate under the automatic driving of the displacement component 23 and the locking component 24.

[0082] Embodiment Three

[0083] Referring to Figure 7 The structure of this embodiment is similar to that of Embodiment Two, and the difference between them is that the specific structure of the guiding component 5 is different. In this embodiment, the guiding component 5 comprises a third guiding wheel 54 and a fourth guiding wheel 55. The number of the fourth guiding wheel 55 is two, and the third guiding wheel 54 and the two fourth guiding wheels 55 are respectively rotationally installed at the bottom of the positioning member and are arranged in a triangular local part. The third guiding wheel 54 is in rolling cooperation with the inner side of the annular track 1, and the fourth guiding wheel 55 is in rolling cooperation with the outer side of the annular track 1.

[0084] Based on the above setting, the positioning block 21 can also be smoothly moved on the annular track 1 with an arc shape. Compared with the guiding component 5 scheme in the second embodiment, the structure of the present scheme is more simple and the manufacturing cost is lower.

[0085] Up to now, the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can still be modified, or some technical features can be replaced equivalently; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the spirit and scope of the technical solutions of the embodiments of the present application.

Claims

1. A resin sand molding mold stripping device for facilitating stripping of a large cast resin sand molding mold, characterized by, The utility model relates to a sand mold positioning device, including: Ring track (1) is arranged on the ground and is below the horizontal plane, the ring track (1) inside surrounds the area formation and places the placing station for the die and the sand box to place; Positioning assembly (2) is slidably arranged in the ring track (1); And pressing assembly (3) is arranged in the positioning assembly (2), the positioning assembly (2) is used to drive the pressing assembly (3) to move to the upper side of the lug (4) of the die, and the pressing assembly (3) is used to press down the lug (4) of the die to fix the die; The positioning assembly (2) includes: Positioning block (21), the limiting recess (211) is formed in the positioning block (21), and the pressing assembly (3) is arranged on the positioning block (21); The top of the ring track (1) has limiting portion (12) that protrudes towards two sides respectively, the limiting portion (12) is embedded in the limiting recess (211), to limit the positioning block (21) to release the ring track (1); The pressing assembly (3) includes: Screw rod (31), one end is threadedly connected with the positioning assembly (2); Pad (32) is arranged on the positioning assembly (2) and is adjacent to the screw rod (31); And pressing block (33), the inside has the long hole for the screw rod (31) to pass through, one end is overlapped on the pad (32), the other end is used to overlap on the lug (4), and the screw rod (31) is used to press down the pressing block (33) and fix.

2. The resin sand molding mold stripping device for large castings according to claim 1, characterized by The positioning assembly (2) is multiple, and multiple positioning assemblies (2) are arranged around the ring track (1).

3. The resin sand molding mold stripping device for large castings according to claim 1, characterized by The positioning assembly (2) is fixedly arranged on the ring track (1) by one side screw (22).

4. The resin bonded sand molding mold stripping device for large castings according to claim 1, characterized by The positioning assembly (2) further includes guide component (5), the guide component (5) includes: Rotatably arranged on the one side of the positioning block (21) mounting seat (51); First guide wheel (52) is rotatably arranged on the mounting seat (51) and is rolled with the inner side of the ring track (1); And second guide wheel (53) is rotatably arranged on the mounting seat (51) and is rolled with the outer side of the ring track (1).

5. The apparatus for facilitating stripping of a resin bonded sand mold for large castings of claim 1, wherein, The positioning assembly (2) further includes guide component (5), the guide component (5) includes: Third guide wheel (54) is rotatably arranged on the positioning block (21) and is rolled with the inner side of the ring track (1); And fourth guide wheel (55), the number is two, rotatably arranged on the positioning block (21) and forms triangular layout with the third guide wheel (54), and the fourth guide wheel (55) is rolled with the outer side of the ring track (1).

6. The apparatus for facilitating stripping of a resin bonded sand mold for large castings of claim 1, 4 or 5, wherein, The positioning assembly (2) further includes displacement component (23), the displacement component (23) includes: Displacement motor (232) is arranged on the positioning block (21); And displacement gear (231) is connected with the output shaft of the displacement motor (232), the ring track (1) is provided with meshing teeth (13) along the length direction, and the displacement gear (231) is engaged with the meshing teeth (13).

7. The apparatus for facilitating stripping of a resin bonded sand mold for large castings of claim 6, wherein, The positioning assembly (2) further comprises a locking component (24), which comprises: a locking cylinder (241) fixedly arranged on the positioning block (21); and a locking block (242) slidingly arranged on the positioning block (21) and connected with a telescopic rod of the locking cylinder (241), the locking block (242) being provided with locking teeth which are mutually engaged with the meshing teeth (13), the locking cylinder (241) being used to drive the locking block (242) to move close to or away from the annular track (1), so as to lock or slide the positioning block (21) relative to the annular track (1).

8. The apparatus for facilitating stripping of a resin bonded sand mold for large castings of claim 1, wherein, The bottom of the annular track (1) is provided with a reinforcing plate (11) embedded in the ground.

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