Switching mechanism and sand mold conveying system

Abstract

The utility model discloses a switching mechanism and a sand mold conveying system. The switching mechanism comprises a moving part, a positioning assembly and a pushing part. The moving part is used for moving the trolley. The positioning assembly is arranged on the moving part and used for positioning the trolley on the moving part; the pushing part is movably arranged and used for pushing out the trolley on the moving part. The sand mold conveying system comprises the switching mechanism and further comprises a pouring row guide rail and a cooling row guide rail, and the moving part is used for transferring the trolley between the pouring row guide rail and the cooling row guide rail. According to the transfer mechanism, the trolley can be effectively prevented from shaking or moving in the transfer process, the stability of sand mold transportation is enhanced, and therefore the percent of pass of castings can be increased. The utility model is applied to the technical field of casting equipment.

Description

Technical Field

[0001] The present application relates to the technical field of casting equipment, and in particular to a conversion mechanism and a sand mold conveying system. Background Art

[0002] Generally, a sand mold is a casting cavity made of raw sand, a binder, and other auxiliary materials during the casting production process. Sand molds can be used to produce castings. For example, molten metal can be poured into the sand mold to produce a casting, and then the casting can be cooled to obtain a casting product.

[0003] In the process of producing castings using sand molds, the sand molds are usually transported. For example, the sand mold transport system includes a pouring row guide rail, a cooling row guide rail, and a transfer mechanism. A trolley loaded with sand molds is movably placed on the pouring row guide rail. After the sand molds are poured, the transfer mechanism transfers the trolley loaded with sand molds from the pouring row guide rail to the cooling row guide rail to cool the castings in the sand molds.

[0004] In the related art, the conversion mechanism includes a conversion trolley, which is generally used to transport a trolley loaded with sand molds. However, wheels are provided at the bottom of the trolley, which makes the trolley easy to shake or move on the conversion trolley during the transportation process. It is unstable and will cause the shape of the molten metal in the sand mold to change due to the shaking, and even cause the molten metal in the sand mold to splash, thereby increasing the rejection rate of the casting. Utility Model Content

[0005] The present application aims to solve at least one of the above-mentioned technical problems in the prior art to a certain extent. To this end, a first embodiment of the present application provides a conversion mechanism.

[0006] The second embodiment of the present application proposes a sand mold conveying system having the above-mentioned conversion mechanism.

[0007] According to the conversion mechanism of the first aspect embodiment of the present application, it includes: a moving part, which is used to move the trolley; a positioning component, which is arranged on the moving part and is used to position the trolley on the moving part; and a pushing member, which is movably arranged and is used to push the trolley on the moving member.

[0008] Based on the above technical solution, the embodiment of the present application has at least the following beneficial effects: the conversion mechanism in the embodiment of the present application can fix the trolley on the moving part by setting a positioning component. When the trolley is transferred by the moving part, the trolley can be prevented from shaking or moving during the transfer process, thereby enhancing the stability of sand mold transportation, thereby improving the qualification rate of castings; by moving the pushing part, the pushing part can push the trolley on the moving part when it is located at different workstations, without the need to set pushing parts at multiple workstations, which can simplify the structure, facilitate the maintenance of the conversion mechanism, and reduce equipment costs.

[0009] According to the conversion mechanism of the first aspect embodiment of the present application, the movable part includes a placement surface, the trolley is placed on the placement surface of the movable part, and the positioning assembly includes a first stop part, which is movably connected to the movable part. By moving the first stop part, the first stop part can be made to protrude from the placement surface in the vertical direction to stop the trolley.

[0010] According to the conversion mechanism of the first embodiment of the present application, the first stop member is rotatably connected to the movable member, and by rotating the first stop member, the first stop member can be made to protrude vertically from the placement surface to stop the trolley.

[0011] According to the conversion mechanism of the embodiment of the first aspect of the present application, the positioning assembly further includes a first driving component, and the first driving component is connected to the first stopper to drive the first stopper to rotate.

[0012] According to the conversion mechanism of the first aspect embodiment of the present application, the positioning assembly also includes a second stop member, the first stop member is arranged on the inner side of the wheel of the trolley along the pushing direction of the trolley, and the second stop member is arranged on the outer side of the wheel along the pushing direction of the trolley.

[0013] According to the conversion mechanism of the first aspect embodiment of the present application, the pushing member is connected to the moving member so that the pushing member can move synchronously with the moving member, and the pushing member is arranged on a side close to the second stop member along the pushing direction of the trolley.

[0014] According to the conversion mechanism of the first embodiment of the present application, the pushing member is an electric push cylinder.

[0015] According to the conversion mechanism of the first aspect embodiment of the present application, the conversion mechanism also includes a conversion guide rail and a second driving component, the movable member is movably arranged on the conversion guide rail, and the second driving component is connected to the movable member to drive the movable member to move along the length direction of the conversion guide rail.

[0016] According to the conversion mechanism of the first aspect embodiment of the present application, the second driving component includes a gear, a rack and a driving motor, the movable member is connected to the rack, the rack extends along the length direction of the conversion guide rail, the gear is meshed with the rack, and the output shaft of the driving motor is connected to the gear to drive the gear to rotate, thereby driving the movable member to move along the length direction of the guide rail through the rack.

[0017] According to the sand mold conveying system of the second embodiment of the present application, it includes the above-mentioned conversion mechanism, and also includes a casting row guide rail and a cooling row guide rail, and the moving part is used to transfer the trolley between the casting row guide rail and the cooling row guide rail.

[0018] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become obvious from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The present application is further described below with reference to the accompanying drawings and embodiments;

[0020] Figure 1 This is a schematic structural diagram of the conversion mechanism in an embodiment of the present application;

[0021] Figure 2 This is another structural diagram of the conversion mechanism in the embodiment of the present application;

[0022] Figure 3 This is another structural diagram of the conversion mechanism in the embodiment of the present application;

[0023] Figure 4 This is a structural diagram of the loading part in the embodiment of the present application;

[0024] Figure 5 This is another structural diagram of the loading part in the embodiment of the present application;

[0025] Figure 6 This is a structural diagram of the sand mold conveying system in an embodiment of the present application;

[0026] Figure 7 This is another structural schematic diagram of the sand mold conveying system in an embodiment of the present application;

[0027] Figure 8 This is another structural diagram of the sand mold conveying system in an embodiment of the present application.

[0028] Figure numerals: sand mold conveying system 100, conversion mechanism 110, moving part 111, loading part 1111, pushing part 112, positioning assembly 113, first stopper 1131, telescopic cylinder 11321, fixed seat 11322, second stopper 1133, conversion guide rail 114, first station 1141, second station 1142, third station 1143, gear 1151, rack 1152, drive motor 1153, conversion tripod 116, pouring row 1211, pouring row guide rail 1212, cooling row 1221, cooling row guide rail 1222, supporting tripod 123, trolley 130, outer wheel 131; automatic molding machine 200; mold shifting mechanism 300; sand mold 400. DETAILED DESCRIPTION

[0029] This section will describe the specific embodiments of the present application in detail. The preferred embodiments of the present application are shown in the accompanying drawings. The purpose of the accompanying drawings is to supplement the description of the text part of the specification with graphics, so that people can intuitively and vividly understand each technical feature and overall technical solution of the present application, but it cannot be understood as a limitation on the scope of protection of the present application.

[0030] In the description of this application, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, they cannot be understood as limitations on this application.

[0031] In the description of this application, "several" means one or more, "many" means more than two, "greater than," "less than," and "exceed" are understood to exclude the number itself, while "above," "below," and "within" are understood to include the number itself. If used, "the second" is used solely to distinguish technical features and is not to be construed as indicating or implying relative importance, implicitly specifying the number of the indicated technical features, or implicitly specifying the order of the indicated technical features.

[0032] In the description of this application, unless otherwise clearly defined, words such as setting and connecting should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meaning of the above words in this application based on the specific content of the technical solution.

[0033] The technical solution of the present application will be further described below with reference to the embodiments and drawings.

[0034] In the embodiment of the present application, the positive direction of the X axis is right, and the negative direction of the X axis is left; the positive direction of the Y axis is front, and the negative direction of the Y axis is back; the positive direction of the Z axis is up, and the negative direction of the Z axis is down.

[0035] See also Figures 1 to 3The first embodiment of the present application provides a conversion mechanism 110, which can effectively prevent the trolley 130 from shaking or moving during the transportation process, enhance the stability of the sand mold 400 transportation, and thus improve the qualified rate of castings.

[0036] Exemplarily, the conversion mechanism 110 includes a moving member 111, a positioning assembly 113, and a pushing member 112. The moving member 111 is used to move a trolley 130. The positioning assembly 113 is disposed on the moving member 111 and is used to position the trolley 130 on the moving member 111. The pushing member 112 is movably disposed and is used to push the trolley 130 off the moving member 111. Optionally, the trolley 130 is used to load the sand mold 400.

[0037] The conversion mechanism 110 in the embodiment of the present application can fix the trolley 130 on the moving part 111 by setting a positioning component 113. When the trolley 130 is transferred by the moving part 111, the trolley 130 can be prevented from shaking or moving during the transfer process, thereby enhancing the stability of the sand mold 400 transportation, thereby improving the qualification rate of the casting; by moving the pushing member 112, the pushing member 112 can push the trolley 130 on the moving part 111 when it is located at different workstations, without setting the pushing member 112 at multiple workstations, which can simplify the structure, facilitate the maintenance of the conversion mechanism 110, and reduce equipment costs.

[0038] Optionally, in some embodiments, the movable member 111 includes a placement surface, the trolley 130 is placed on the placement surface, the positioning assembly 113 includes a first stop member 1131, and the first stop member 1131 is movably connected to the movable member 111. By moving the first stop member 1131, the first stop member 1131 can be made to protrude vertically from the placement surface to stop the trolley 130.

[0039] For example, see Figure 2 The movable member 111 is provided with a loading portion 1111 for loading the trolley 130. The placement surface of the loading portion 1111 can be the top surface of the loading portion 1111. That is, the trolley 130 is placed on the top surface of the loading portion 1111. Optionally, the loading portion 1111 can also be provided with a guide portion. The guide portion can extend in the front-to-back direction so that the pushing member 112 can push the trolley 130 along the extension direction of the guide portion. Optionally, the guide portion can be a guide rail.

[0040] Optionally, the moving member 111 is a moving trolley. Of course, the moving member 111 can also adopt other moving structures, which are not specifically limited here.

[0041] Alternatively, in some embodiments, see Figure 4 and Figure 5The first stopper 1131 is rotatably connected to the moving member 111 . By rotating the first stopper 1131 , the first stopper 1131 can be made to protrude vertically from the placement surface of the moving member 111 to stop the trolley 130 .

[0042] It is understood that when the trolley 130 needs to be positioned on the moving member 111, the first stopper 1131 can be rotated so that the first stopper 1131 protrudes vertically from the top surface of the loading portion 1111, thereby stopping the trolley 130. When the trolley 130 needs to be pushed out, the first stopper 1131 can be rotated in the opposite direction so that the first stopper 1131 is lower than or flush with the top surface of the loading portion 1111, thereby unlocking the trolley 130 and allowing it to be pushed out.

[0043] Alternatively, in other embodiments, the first stopper 1131 may be connected to the movable member 111 so as to be movable up and down. By moving the first stopper 1131 upward, the first stopper 1131 can be made to protrude vertically from the top surface of the loading portion 1111, thereby stopping the trolley 130. Of course, the first stopper 1131 may also adopt other stopper structures, which are not specifically limited herein.

[0044] Optionally, in some embodiments, the positioning assembly 113 further includes a first driving component, which is connected to the first stopping member 1131 to drive the first stopping member 1131 to rotate.

[0045] For example, see Figure 4 and Figure 5 The first driving component includes a telescopic cylinder 11321, the fixed end of the telescopic cylinder 11321 is fixedly connected to the moving part 111, the telescopic end of the telescopic cylinder 11321 is hinged to the lower end of the first stop member 1131, and the middle part of the first stop member 1131 is rotatably connected to the moving part 111. The first stop member 1131 can be driven to rotate by extending and retracting the telescopic end of the telescopic cylinder 11321.

[0046] Optionally, the first driving component further includes a fixing seat 11322 , and the fixed end of the telescopic cylinder 11321 is fixed to the loading portion 1111 of the moving member 111 through the fixing seat 11322 .

[0047] For example, the trolley 130 is provided with two sets of wheels spaced apart in the front-to-back direction (i.e., the length direction of the trolley 130), and each set of wheels includes two wheels spaced apart in the width direction of the trolley 130. The sides opposite to each other in the two sets of wheels are defined as the inner sides of the wheels, and the sides opposite to each other in the two sets of wheels are defined as the outer sides of the wheels.

[0048] Optionally, the positioning assembly 113 can be used to fix the wheels, thereby stopping the trolley 130. Of course, the positioning assembly 113 can also be used to fix the vehicle plate of the trolley 130 to stop the trolley 130, and no specific limitation is given here. The following description takes the positioning assembly 113 being used to fix the wheels as an example.

[0049] Optionally, in some embodiments, the positioning assembly 113 further includes a second stopper 1133 , the first stopper 1131 is arranged on the inner side of the wheel of the trolley 130 along the pushing direction of the trolley 130 , and the second stopper 1133 is arranged on the outer side of the wheel along the pushing direction of the trolley 130 .

[0050] Optionally, the first stopper 1131 and the second stopper 1133 may both be blocks.

[0051] It is understandable that the positioning assembly 113 can be set to one or more, as long as it can stop the trolley 130. The specific setting position and setting number of the positioning assembly 113 can be set according to actual needs and are not specifically limited here.

[0052] Optionally, in some embodiments, the pushing member 112 is connected to the moving member 111 so that the pushing member 112 can move synchronously with the moving member 111, and the pushing member 112 is arranged on a side close to the second stop member 1133 along the pushing direction of the trolley 130, so that after the first stop member 1131 is rotated to unlock the trolley 130, the pushing member 112 is pushed out of the trolley.

[0053] Optionally, the pushing member 112 is also provided on the moving member 111. For example, see Figure 2 The pushing member 112 is arranged at the rear side of the loading portion 1111 .

[0054] The pusher 112 in the related art uses an oil cylinder, and the oil cylinder is connected to a hydraulic system. However, the dust at the casting manufacturing site is very large, and the accumulation of dust over a long period of time may cause the hydraulic valve in the hydraulic system to get stuck.

[0055] Therefore, optionally, in some embodiments, the pusher 112 is an electric push cylinder. By adopting the electric push cylinder, dust at the casting manufacturing site can be prevented from affecting the operation of the pusher 112, thereby ensuring the use effect of the pusher 112 and improving the reliability of the equipment.

[0056] Alternatively, in some embodiments, see Figure 2 The conversion mechanism 110 also includes a conversion guide rail 114 and a second driving component. The moving member 111 is movably arranged on the conversion guide rail 114. The second driving component is connected to the moving member 111 to drive the moving member 111 to move along the length direction of the conversion guide rail 114.

[0057] Alternatively, in some embodiments, see Figure 1 and Figure 2 The second driving component includes a gear 1151, a rack 1152 and a driving motor 1153. The movable member 111 is connected to the rack 1152. The rack 1152 extends along the length direction of the conversion guide rail 114. The gear 1151 is meshed with the rack 1152. The output shaft of the driving motor 1153 is connected to the gear 1151 to drive the gear 1151 to rotate, thereby driving the movable member 111 to move along the length direction of the guide rail through the rack 1152.

[0058] Optionally, the conversion mechanism 110 further includes a conversion stand 116 , and the conversion guide rail 114 is installed on the top of the conversion stand 116 .

[0059] Other structures and operations of the conversion mechanism 110 according to the embodiment of the first aspect of the present application are known to ordinary technicians in this field and will not be described in detail here.

[0060] See also Figures 6 to 8 The second aspect embodiment of the present application provides a sand mold conveying system 100, the sand mold conveying system 100 includes the conversion mechanism 110 of the first aspect embodiment of the present application, and also includes a casting row guide rail 1212 and a cooling row guide rail 1222, and the moving part 111 is used to transfer the trolley 130 between the casting row guide rail 1212 and the cooling row guide rail 1222.

[0061] Optionally, the sand mold conveying system 100 also includes a supporting leg 123, and the pouring row guide rail 1212 and the cooling row guide rail 1222 are both installed on the top of the supporting leg 123, and the pouring row guide rail 1212 and the cooling row guide rail 1222 are both at the same height and parallel to the guide part on the loading part 1111 of the moving part 111, so that the pushing part 112 can push the trolley 130 on the loading part 1111 along the extension direction of the guide part to the pouring row guide rail 1212 or the cooling row guide rail 1222.

[0062] Exemplarily, the conversion mechanism 110 is symmetrically provided with two, and the two conversion mechanisms 110 are arranged on the front and rear sides of the casting row guide rail 1212 and the cooling row guide rail 1222 perpendicular to the casting row guide rail 1212 respectively. The two conversion mechanisms 110 can be named as front conversion mechanism and rear conversion mechanism, and in order to distinguish, each part of the front conversion mechanism can add the "front" prefix, and each part of the rear conversion mechanism can add the "rear" prefix. For example, the moving member 111 of the front conversion mechanism can be named as the front moving member, and the moving member 111 of the rear conversion mechanism can be named as the rear moving member. Exemplarily, Figures 1 to 3 Shown is Figure 6 Schematic diagram of the structure of the post-conversion mechanism.

[0063] Alternatively, see Figure 6and Figure 8 , the pouring row guide rail 1212 is set as one, and the cooling row guide rail 1222 can be set as two, and the two cooling row guide rails 1222 are set side by side on the same side of the pouring row guide rail 1212. Optionally, the two cooling row guide rails 1222 are set side by side on the right side of the pouring row guide rail 1212. Figure 6 A plurality of carts 130 loaded with sand molds 400 may be sequentially arranged along the length of the pouring row guide rail 1212 to form a pouring row 1211. A plurality of carts 130 loaded with sand molds 400 may also be sequentially arranged along the length of the cooling row guide rail 1222 to form a cooling row 1221.

[0064] Alternatively, see Figure 1 and Figure 6 The transfer rail 114 is provided with a first station 1141, a second station 1142, and a third station 1143 along its length. The first station 1141 is connected to the pouring row rail 1212, and the second station 1142 and the third station 1143 are respectively connected to the two cooling row rails 1222. By moving the moving member 111 along the length of the transfer rail 114, the trolley 130 can be transferred from the pouring row rail 1212 to the cooling row rail 1222.

[0065] Optionally, the side opposite to the front and rear loading parts 1111 is defined as the inner side of the loading part 1111, and the side opposite to the front and rear loading parts 1111 is defined as the outer side of the loading part 1111. Optionally, the positioning assembly 113 can be used to stop the wheels of the trolley 130 close to the outer side of the loading part 1111 (named "trolley outer wheels 131"), thereby stopping the trolley 130. Optionally, the second stopper 1133 is fixedly mounted on the outer end of the loading part 1111 to limit the trolley outer wheels 131 to prevent the trolley 130 on the moving part 111 from rolling along the outer side of the moving part 111. The first stopper 1131 is arranged on the inner side of the trolley outer wheels 131 to further limit the trolley outer wheels 131 to prevent the trolley 130 on the moving part 111 from rolling along the inner side of the moving part 111, thereby positioning the trolley 130 on the moving part 111. For example, Figure 4 and Figure 5 Shown is a structural diagram of the rear loading portion. It is understandable that the front loading portion and the rear loading portion are symmetrically arranged.

[0066] Optionally, the pushing member 112 is disposed outside the loading portion 1111 , so that the pushing member 112 can push the trolley 130 on the loading portion 1111 onto the casting row guide rail 1212 or the cooling row guide rail 1222 .

[0067] Alternatively, see Figure 6An automatic molding machine 200 is provided on the side of the pouring row guide rail 1212 away from the cooling row guide rail 1222, and the automatic molding machine 200 is used to make the sand mold 400.

[0068] Alternatively, see Figure 6 The sand mold conveying system 100 may also be provided with a mold-moving mechanism 300 for removing the sand mold 400 from the trolley 130. For example, the mold-moving mechanism 300 may be used to move the sand mold 400 from the trolley 130 to a transfer belt, which then transports the sand mold 400 to a vibrating sand shakeout machine to crush the sand mold and remove the casting. The empty trolley after removing the sand mold 400 can enter the next round of sand mold transportation. It is understood that the specific location of the mold-moving mechanism 300 can be set according to actual needs and is not specifically limited here.

[0069] The working process of the sand mold conveying system 100 in the embodiment of the present application is as follows: the sand mold 400 made by the automatic molding machine 200 is moved to the trolley 130 on the pouring row guide rail 1212, and molten metal (for example, molten iron) is poured into the sand mold 400. Then, the trolley 130 loaded with the sand mold 400 is transferred to the cooling row guide rail 1222 for cooling and molding through the front and rear two conversion mechanisms 110, and the trolley 130 with the sand mold 400 unloaded is transferred back to the pouring row guide rail 1212.

[0070] Exemplarily, the front pusher pushes the trolley 130 on the front moving member on the front first station onto the casting row guide rail 1212, and the trolley 130 on the casting row guide rail 1212 will move backward by a distance of the trolley 130, so that the trolley 130 at the rear end of the casting row guide rail 1212 will move onto the rear moving member, at this time the rear positioning assembly stops the trolley 130 on the rear moving member, and the rear second driving component drives the rear moving member and the rear pusher to move synchronously from the rear first station to the rear second station (or rear third station), the rear positioning assembly is released, and the rear pusher The moving part pushes the trolley 130 on the rear moving part to the cooling row guide rail 1222, and the trolley 130 on the cooling row guide rail 1222 will move forward a distance of a trolley 130, so that the trolley 130 at the front end of the cooling row guide rail 1222 moves to the front moving part, and the trolley 130 is positioned on the front moving part through the front positioning component. At this time, the sand mold 400 and the formed casting on the trolley 130 can be removed by the mold shifting mechanism 300, and then the empty trolley 130 is moved to the front first workstation through the front moving part, and thus a cycle is completed.

[0071] It is understandable that when the trolley 130 on one of the cooling row guide rails 1222 is in operation, the trolley 130 on the other cooling row guide rail 1222 is stationary, waiting for the casting in the sand mold 400 on the trolley 130 to cool down.

[0072] Other configurations and operations of the sand delivery system 100 according to the second aspect of the application are known to those of ordinary skill in the art and will not be described in detail here.

[0073] The above detailed description of the application has been made in conjunction with the accompanying drawings, but the application is not limited to the above-described embodiments, and various changes can be made within the knowledge of those of ordinary skill in the art without departing from the purpose of the application.

Claims

1. A conversion mechanism, characterized in that: include: A moving part, the moving part is used to move the trolley; a positioning assembly, the positioning assembly being disposed on the moving member and being used to position the trolley on the moving member; A pushing member is movably arranged and is used to push the trolley on the moving member out.

2. The conversion mechanism according to claim 1, characterized in that: The movable part includes a placement surface, the trolley is placed on the placement surface, and the positioning assembly includes a first stopper, which is movably connected to the movable part. By moving the first stopper, the first stopper can be made to protrude from the placement surface in a vertical direction to stop the trolley.

3. The conversion mechanism according to claim 2, characterized in that: The first stopper is rotatably connected to the moving member. By rotating the first stopper, the first stopper can be made to protrude vertically from the placement surface to stop the trolley.

4. The conversion mechanism according to claim 3, characterized in that: The positioning assembly further includes a first driving component connected to the first stopping member to drive the first stopping member to rotate.

5. The conversion mechanism according to claim 2, characterized in that: The positioning assembly further includes a second stopper, wherein the first stopper is arranged on the inner side of the wheel of the trolley along the pushing direction of the trolley, and the second stopper is arranged on the outer side of the wheel along the pushing direction of the trolley.

6. The conversion mechanism according to claim 5, characterized in that: The pushing member is connected to the moving member so that the pushing member can move synchronously with the moving member, and the pushing member is arranged on a side close to the second stopping member along the pushing direction of the trolley.

7. The conversion mechanism according to claim 6, characterized in that: The pushing member is an electric pushing cylinder.

8. The conversion mechanism according to claim 1, characterized in that: The conversion mechanism further includes a conversion guide rail and a second driving component. The moving member is movably arranged on the conversion guide rail. The second driving component is connected to the moving member to drive the moving member to move along the length direction of the conversion guide rail.

9. The conversion mechanism according to claim 8, characterized in that: The second driving component includes a gear, a rack and a driving motor. The movable member is connected to the rack. The rack extends along the length direction of the conversion guide rail. The gear is meshed with the rack. The output shaft of the driving motor is connected to the gear to drive the gear to rotate, thereby driving the movable member to move along the length direction of the guide rail through the rack.

10. Sand mold conveying system, characterized by: The conversion mechanism comprises the conversion mechanism according to any one of claims 1 to 9, further comprising a casting row guide rail and a cooling row guide rail, wherein the moving member is used to transfer the trolley between the casting row guide rail and the cooling row guide rail.

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