Crucible double-station positioning coring device

Abstract

The utility model discloses a double-station positioning coring device for a crucible. The two tool clamps are oppositely arranged front and back and are used for fixing a crucible mold; the rotary driving module is used for driving the tool clamps to switch positions between a sand shooting station and a loading and unloading station; the rack is arranged above the tool clamp; the inner core taking and placing mechanism is positioned above the loading and unloading station and is used for taking and placing an inner core in a crucible mold; the tool clamp is provided with a first sensor used for detecting whether the outer mold is placed in place or not and a second sensor used for detecting whether the inner core is placed in place or not. The sand shooting device is compact in layout, small in occupied space and capable of effectively reducing damage of sand grains to human bodies, and the crucible mold can be placed in place when being detected through the sensor, so that misoperation in the sand shooting process is reduced, the production efficiency of sand shooting is improved, and the production cost is reduced.

Description

[Technical field]

[0001] The utility model belongs to the technical field of crucible production equipment, in particular to a crucible double-station positioning and coring device. [Background technology]

[0002] Crucible is a very important aluminum thermite welding consumables, which needs to have high refractoriness and high density. High refractoriness can be ensured by selecting high refractoriness sand, while the high density of the crucible is closely related to the crucible molding process and molding device. Crucible is a cup-shaped structure with an opening upward, and the parts to be molded are the bottom and side walls of the crucible. Therefore, sand particles can be filled into the inner cavity of the mold to obtain a crucible. For example, a crucible automatic molding device and a molding method thereof are disclosed in Chinese Patent Publication No. CN117885180A. The scheme is provided with a double-station rotary tooling, which performs sand shooting and loading and unloading actions at the same time, but there are two problems in the scheme:

[0003] (1) Both the loading and unloading station and the sand-shooting station are provided with fixtures for fixing the crucible mold. During the manual loading process, at the loading and unloading station, the outer mold of the crucible is manually placed on the fixture, and the core-taking device places the inner core of the crucible inside the outer mold of the crucible for closing the mold. After closing the mold, the crucible mold is rotated to the sand-shooting station for sand-shooting. If the outer mold or the inner core of the crucible is not in place, the sand-shooting operation will be affected, resulting in poor crucible molding quality or failure to form, thereby reducing the molding production efficiency;

[0004] (2) The loading and unloading station and the sand-shooting station are arranged opposite to each other without any obstruction in between. Since the sand-shooting operation and the loading and unloading operation are carried out simultaneously, the sand-shooting station will generate sand dust during the sand-shooting process. When placing the crucible outer mold or taking out the crucible at the loading and unloading station manually, a large amount of dust will be inhaled, which will affect the health.

[0005] Therefore, it is necessary to provide a crucible double-station positioning and coring device to solve the above technical problems. [Contents of the utility model]

[0006] The main purpose of the utility model is to provide a crucible double-station positioning and coring device, which has a compact layout, occupies a small space, can effectively reduce the harm of sand particles to the human body, and is equipped with a sensor detection device to detect when the crucible mold is placed in place, thereby reducing misoperation in the sand shooting process, improving the production efficiency of sand shooting and reducing production costs.

[0007] The utility model achieves the above-mentioned purpose through the following technical scheme: a crucible double-station positioning and coring device, which includes two tooling fixtures arranged front and back relatively and used to fix the crucible mold, a rotating drive module driving the tooling fixture to switch positions between a sand shooting station and a loading and unloading station, a frame arranged above the tooling fixture, and an inner core picking and placing mechanism located above the loading and unloading station and used to pick and place the inner core in the crucible mold; the tooling fixture is provided with a first sensor for detecting whether the outer mold is placed in place, and a second sensor for detecting whether the inner core is placed in place.

[0008] Furthermore, the rotary drive module includes a base, a first driving member fixed on the base, a gear driven to rotate by the first driving member, a gear plate meshing with the gear, a supporting cylinder fixed above the gear plate, a rotating worktable fixed above the supporting cylinder, a limit assembly arranged on the base and the supporting cylinder and used to stop the rotating worktable and a positioning support assembly arranged between the base and the rotating worktable.

[0009] Furthermore, the tooling fixture includes a bottom positioning component for positioning the bottom of the outer mold, a rear positioning component for contour positioning the rear side of the outer mold, a left clamping component for clamping and positioning the left side of the outer mold, and a right clamping component that is spliced ​​relative to the left clamping component and clamps and positions the right side of the outer mold.

[0010] Furthermore, the bottom positioning assembly includes a mounting plate mounted on the rotating workbench and a positioning protrusion fixed on the mounting plate and capable of extending into the bottom of the outer mold for contour positioning.

[0011] Furthermore, the rear positioning assembly includes a rear positioning plate extending upward from the mounting plate and conforming to the rear side wall of the outer mold, and a receiving seat fixed to the rear positioning plate and used to place the handle of the outer mold.

[0012] Furthermore, the first sensor is arranged on the receiving seat, and the receiving seat is provided with a first V-shaped groove for positioning the handle of the inner core.

[0013] Furthermore, the left clamping assembly and the right clamping assembly have the same structure and both include a second driving member fixed on the rotating workbench, a movable plate driven by the second driving member to move left and right, and a contoured clamping plate fixed on the movable plate and arranged to conform to the outer wall of the outer mold.

[0014] Furthermore, the second sensor is disposed on the side walls of the rear positioning plate and the left and right contour clamping plates.

[0015] Furthermore, the inner core taking and placing mechanism includes a third driving member fixed on the frame, a support frame driven by the third driving member to move up and down, and a pair of lifting hooks arranged on the support frame front and back relative to each other and lifting the inner core upward and taking it out.

[0016] Furthermore, it also includes a shielding module for shielding sand particles, which is arranged on the frame and located between the sand shooting station and the loading and unloading station. The shielding module includes a fourth driving member fixed on the frame, a moving rod driven by the fourth driving member to move up and down, a first shielding plate fixed at the lower end of the moving rod, a second shielding plate fixedly installed on the frame and located above one side of the loading and unloading station, and a third shielding plate for shielding sand particles, which is arranged on the rotating workbench and located below the frame.

[0017] Compared with the prior art, the beneficial effects of the crucible double-station positioning and coring device of the utility model are:

[0018] (1) A sand-shooting station and a loading and unloading station are provided, and a rotary drive module can drive the front and rear positions of the tooling fixtures on the sand-shooting station and the loading and unloading station to be exchanged. The sand-shooting station and the loading and unloading station work simultaneously to complete the sand-shooting operation and the loading and unloading operation. The two stations cooperate in production synchronously, with high production efficiency. In addition, the sand-shooting station and the loading and unloading station are compactly arranged and occupy little space.

[0019] (2) A shielding module is provided between the sand-shooting station and the loading and unloading station. During the process of manual loading and unloading, even if the sand-shooting station is performing sand-shooting operation, there are two first shielding plates, a third shielding plate and a second shielding plate to form an enclosure to completely separate the sand-shooting station from the loading and unloading station. When sand-shooting, it can reduce the sand grains on the sand-shooting station from entering the loading and unloading station, which can effectively reduce the harm of sand grains to the human body;

[0020] (3) The fixture is provided with a first sensor for detecting whether the outer mold is in place and a second sensor for detecting whether the inner core is in place. If the outer mold or the inner core is not in place, the first sensor or the second sensor will alarm, and the staff can immediately check and confirm the cause, which can reduce misoperation during the sand shooting process and improve the production efficiency of sand shooting;

[0021] (4) The inner core taking and placing mechanism can take out the inner core of the crucible mold after the sand shooting is completed, and the taken out inner core will be replaced in the outer mold of the next new crucible mold, so the inner core can be repeatedly recycled, saving production costs.

[0022] Therefore, the crucible double-station positioning and coring device provided by this solution has a compact layout, occupies a small space, can effectively reduce the harm of sand particles to the human body, and is equipped with a sensor detection device to detect when the crucible mold is placed in place, thereby reducing misoperation in the sand shooting process, improving the production efficiency of sand shooting and reducing production costs.

Brief Description of the Drawings

[0023] Figure 1 This is a schematic diagram of the three-dimensional structure of the crucible double-station positioning and coring device according to an embodiment of the utility model;

[0024] Figure 2 This is a schematic diagram of the three-dimensional structure of the crucible double-station positioning and coring device according to an embodiment of the utility model;

[0025] Figure 3 It is a three-dimensional structural schematic diagram of the rotary drive module and the fixture of the embodiment of the utility model;

[0026] Figure 4 This is a schematic diagram of the three-dimensional structure of the rotary drive module of an embodiment of the utility model;

[0027] Figure 5 It is a three-dimensional structural schematic diagram of the tooling fixture of the embodiment of the utility model;

[0028] Figure 6 It is a three-dimensional structural schematic diagram of the bottom positioning assembly and the rear positioning assembly of the embodiment of the utility model;

[0029] Figure 7 This is a schematic diagram of the three-dimensional structure of the crucible mold of the utility model embodiment;

[0030] Figure 8 It is a three-dimensional structural schematic diagram of the inner core taking and placing mechanism of the embodiment of the utility model;

[0031] Fig. 9 This is a schematic diagram of the three-dimensional structure of the lifting hook of the embodiment of the utility model;

[0032] The numbers in the figure represent:

[0033] 100-crucible double-station positioning and coring device; 200-crucible mold, 201-outer mold, 202-inner core, 203-handle, 204-handle, 205-molding cavity;

[0034] 1- fixture, 11- bottom positioning assembly, 111- mounting plate, 112- positioning protrusion, 12- left clamping assembly, 121- second driving member, 122- moving plate, 123- contour clamping plate, 13- right clamping assembly, 14- rear positioning assembly, 141- rear positioning plate, 142- bearing seat, 143- first V-shaped groove, 15- first sensor, 16- second sensor;

[0035] 2-Sand blasting station;

[0036] 3-Loading and unloading stations;

[0037] 4-rotation drive module, 41-base, 42-first drive member, 43-gear, 44-gear plate, 45-support cylinder, 46-rotation worktable, 47-limiting assembly, 471-positioning ear, 472-fifth drive member, 473-stop pin, 48-positioning support assembly, 481-sixth drive member, 482-positioning column, 483-support column;

[0038] 5- rack;

[0039] 6-inner core taking and placing mechanism, 61-third driving member, 62-support frame, 63-lifting hook, 631-installation end, 632-action end, 633-second V-shaped groove;

[0040] 7-shielding module, 71-fourth driving member, 72-moving rod, 73-first shielding plate, 74-third shielding plate. [Specific implementation method]

[0041] Please refer to Figure 1-Figure 9 The present embodiment is a crucible double-station positioning and coring device 100, which is used to position and take and place the outer mold 201 and the inner core 202 of the crucible mold 200. The crucible double-station positioning and coring device 100 includes two fixtures 1 arranged front and back oppositely and used to fix the crucible mold 200, a rotating drive module 4 driving the fixture 1 to switch positions between the sand shooting station 2 and the loading and unloading station 3, a frame 5 arranged above the fixture 1, an inner core picking and placing mechanism 6 fixed on the frame 5 and located above the loading and unloading station 3 and for taking and placing the inner core 202 in the crucible mold 200, and a shielding module 7 arranged on the frame 5 and located between the sand shooting station 2 and the loading and unloading station 3 for shielding sand particles.

[0042] The rotary drive module 4 includes a base 41, a first driving member 42 fixed on the base 41, a gear 43 driven to rotate by the first driving member 42, a gear plate 44 meshing with the gear 43, a support cylinder 45 fixed above the gear plate 44, a rotary worktable 46 fixed above the support cylinder 45, a limit assembly 47 arranged on the base 41 and the support cylinder 45 and used to stop the rotary worktable 46, and a positioning support assembly 48 arranged between the base 41 and the rotary worktable 46.

[0043] The limiting assembly 47 includes positioning ears 471 fixed on both sides of the supporting cylinder 45 and provided with positioning holes, a fifth driving member 472 arranged on one side of the base 41, and a stop pin 473 driven by the fifth driving member 472 and extending into the positioning hole of the positioning ear 471 to stop the rotating worktable 46 from rotating; the setting of the limiting assembly 47 can stop the rotating worktable 46 from rotating, and can ensure the stability of the rotating worktable 46 and thus ensure the accuracy of the sand shooting position.

[0044] The positioning support assembly 48 includes a plurality of sixth driving members 481 disposed on the lower surface of the rotating table 46, a positioning column 482 driven by the sixth driving member 481 to move up and down, and a support column 483 disposed on the base 41 and supported up and down by the positioning column 482. Since two fixtures 1 are mounted on the rotating table 46 and are relatively heavy, the positioning support assembly 48 is capable of supporting the rotating table 46 and the two fixtures 1, and ensuring the stability of the two fixtures 1.

[0045] The driving principle of the rotary drive module 4 is as follows: after the crucible mold 200 on the loading and unloading station 3 is placed in place, the first driving member 42 drives the gear 43 to rotate and drive the crucible mold 200 on the fixture 1 to rotate to the sand shooting station 4. When it is rotated into place, the fifth driving member 472 drives the stop pin 473 to extend into the positioning hole of the positioning ear 471 to stop the rotating worktable 46. At the same time, the sixth driving member 481 drives the positioning column 482 to move downward and support on the support column 483, thereby realizing accurate positioning and support of the rotating worktable 46.

[0046] The crucible mold 200 includes an outer mold 201 and an inner core 202 whose lower end is received inside the outer mold 201 . A molding cavity 205 for molding the crucible is formed between the outer mold 201 and the inner core 202 . The outer mold 201 is a container barrel, and the crucible body is obtained after sand injection molding. The crucible body and the container barrel are solidified into an integrated structure to obtain a product crucible assembly. The obtained crucible assembly product is not only easy to take out from the jig 1, but the container barrel can also protect the crucible body; a handle 203 is provided at the upper end of the outer mold 201 for easy removal of the crucible assembly from the jig 1, and a handle 204 for easy removal of the inner core 202 is extended symmetrically from the upper end of the inner core 202. A fixing protrusion is provided at the end of the handle 203 that contacts the outer wall of the outer mold 201 to facilitate fixing the handle 203 on the barrel wall. The crucible mold 200 used in this embodiment has been described in detail in patent CN 106003389 B and will not be repeated in this embodiment.

[0047] The fixture 1 includes a bottom positioning component 11 for positioning the bottom of the outer mold 201, a rear positioning component 14 for contour positioning the rear side of the outer mold 201, a left clamping component 12 for clamping and positioning the left side of the outer mold 201, and a right clamping component 13 which is spliced ​​relative to the left clamping component 12 and clamps and positions the right side of the outer mold 201.

[0048] Since the outer mold 201 is a container barrel and its bottom is recessed inward, the bottom positioning assembly 11 includes a mounting plate 111 mounted on the rotating workbench 46 and a positioning protrusion 112 fixed on the mounting plate 111 and capable of extending into the bottom of the outer mold 201 for contour positioning. The bottom of the outer mold 201 is contoured and positioned on the positioning protrusion 112, thereby preventing the outer mold 201 from moving in a straight line forward, backward, left, and right direction.

[0049] The rear positioning assembly 14 includes a rear positioning plate 141 extending upward from the mounting plate 111 and conforming to the rear side wall of the outer mold 201, a receiving seat 142 fixed on the rear positioning plate 141 and used to place the handle 203 of the outer mold 201, and a first sensor 15 arranged on the receiving seat 142 and capable of detecting whether the outer mold 201 is in place. The receiving seat 142 is provided with a first V-shaped groove 143 for positioning the handle 203, and the first sensor 15 is in the same straight line as the first V-shaped groove 143 and the first sensor 15 is lower than the height of the first V-shaped groove 143. When the outer mold 201 is placed on the loading and unloading station 3, the bottom of the outer mold 201 is set on the positioning protrusion 112, the rear side of the outer mold 201 is conformally fitted with the rear positioning plate 141, and the left and right end surfaces of the rear positioning plate 141 just rest on the fixed protrusions of the outer mold 201, which can limit the rotation of the outer mold 201 along the vertical axis, and the handle 203 falls backward and is positioned in the first V-shaped groove 143. At this time, the handle 203 is just above the first sensor 15 and can be detected by the first sensor 15, which means that the outer mold 201 is in place; if the bottom of the outer mold 201 is not positioned well, or / and the handle 203 is not positioned in the first V-shaped groove 143, the handle 203 is not above the first sensor 15 and cannot be detected by the first sensor 15, and an alarm will be triggered to remind the staff that the outer mold 201 is not in place.

[0050] The left clamping assembly 12 and the right clamping assembly 13 have the same structure and both include a second driving member 121 fixed on the rotating worktable 46, a moving plate 122 driven by the second driving member 121 to move left and right, and a contour clamping plate 123 fixed on the moving plate 122 and arranged to conform to the outer wall of the outer mold 201. When the outer mold 201 is placed, the second driving members 121 of the left clamping assembly 12 and the right clamping assembly 13 simultaneously drive the moving plate 122 to drive the contour clamping plate 123 to clamp on the outer wall of the outer mold 201, and the rear positioning plate 141 and the left and right sides The three contoured clamping plates 123 are put together to form a cylindrical coating on the outer wall of the outer mold 201. The cylindrical coating has sufficient strength to prevent the pressurized sand from damaging the outer mold 201. After the outer mold 201 is placed in place, the inner core placement mechanism 6 places the inner core 202 into the outer mold 201 to complete the mold closing to form a molding cavity 205 of the crucible. The rear positioning plate 141 and the side walls of the contoured clamping plates 123 on the left and right sides are provided with a second sensor 16 for detecting whether the inner core 202 is placed in place. If the inner core is not placed in place, an alarm will be issued to prompt the staff to confirm the reason. The upper end of the inner core 202 extends out of the outer mold 201 and the outer periphery of the uppermost end of the inner core 202 protrudes out of the outer walls of the two contoured clamping plates 123, so that the second sensor 16 arranged on the side walls of the rear positioning plate 141 and the left and right contoured clamping plates 123 can detect the inner core 202 at the upper end; or the upper end of the inner core 202 extends out of the outer mold 201, and a sensing block is arranged at the upper end of the inner core 202, so that the second sensor 16 arranged on the side walls of the rear positioning plate 141 and the left and right contoured clamping plates 123 can detect the sensing block at the upper end and thus detect the inner core 202; the inner core can also be detected by the second sensor 16 in other ways, and the specific way is not limited.

[0051] The inner core taking and placing mechanism 6 includes a third driving member 61 fixed on the frame 5, a support frame 62 driven by the third driving member 61 to move up and down, and a pair of lifting hooks 63 arranged on the support frame 62 in front and back relative to each other and used to take out the inner core 202 upward, and the lifting hook 63 includes a vertical mounting end 631 fixed to the support frame 62 and an active end 632 for lifting the inner core 202 and in a horizontal state; when the crucible mold 200 in the fixture 9 is rotated to the loading and unloading station 3, the handle 204 of the inner core 202 is just located at the active end of the lifting hook 63 Above 632, a second V-groove 633 for holding a handle 204 for the inner core 202 is provided on the working end 632, and the third driving member 61 drives the supporting frame 62 to drive the lifting hook 63 to rise, and the handle 204 is inserted into the second V-groove 633 of the working end 632 and rises to a set position together with the lifting hook 63, so that the inner core 202 is taken out and hung at the set position, and the taken out inner core 202 will be replaced by the inner core taking and placing mechanism 6 into the outer mold 201 of the next new crucible mold 200, so that the inner core 202 can be recycled, saving production costs.

[0052] The shielding module 7 includes a fourth driving member 71 fixed on the frame 5, a moving rod 72 driven by the fourth driving member 71 to move up and down, a first shielding plate 73 fixed at the lower end of the moving rod 72 and located between the sand shooting station 2 and the loading and unloading station 3 for shielding sand particles, a second shielding plate 75 fixedly installed on the frame 5 above one side of the loading and unloading station 3, and a third shielding plate 74 arranged on the rotating workbench 46 and located below the frame 5 for shielding sand particles. In this embodiment, since the inner core picking and placing mechanism 6 is arranged in the middle position, the shielding module 7 is provided with two groups distributed on both sides of the inner core picking and placing mechanism 6, the third shielding plate 74 is located on the rotating workbench 46 on the rear side of the inner core picking and placing mechanism 6 and is located below the crossbeam of the frame 5, and the upper end of the third shielding plate 74 is located below the internal crossbeam of the frame 5 and does not interfere with the rotation of the rotating workbench 46. The two first baffles 73, the third baffle 74 and the second baffle 75 form an enclosure to completely separate the sand shooting station 2 from the loading and unloading station 3 front and back. When sand shooting, it can reduce the sand on the sand shooting station 2 from entering the loading and unloading station 3, which can effectively reduce the harm of sand to the human body.

[0053] After the outer mold 201 is placed in place on the loading and unloading station 3, the fourth driving member 71 drives the moving rod 72 to rise and drives the first baffle plate 73 to rise to a certain height, and the rotating driving module 4 drives the rotating workbench 46 to drive the fixture 1 to rotate from the bottom of the first baffle plate 73 to the sand shooting station 2. At the same time, the third baffle plate 74 rotates with the fixture 1. After the crucible mold 202 rotates to the sand shooting station, the fourth driving member 71 drives the moving rod 72 to descend and drives the first baffle plate 73 to descend into place. At this time, the two first baffle plates 73 and the third baffle plate 74 form a complete enclosure The sand shooting station 2 is separated from the loading and unloading station 3 front and back. At this time, sand shooting is carried out at the sand shooting station 2, and the inner core 202 and the formed crucible body are taken out from the loading and unloading station 3, and a new outer mold 201 is replaced. During the manual loading and unloading process, even if the sand shooting station 2 is performing sand shooting, there are two first baffle plates 73, a third baffle plate 74 and a second baffle plate 75, which form a barrier to completely separate the sand shooting station 2 from the loading and unloading station 3 front and back. When sand shooting, the sand particles on the sand shooting station 2 can be reduced from entering the loading and unloading station 3, which can effectively reduce the harm of the sand particles to the human body.

[0054] When the crucible double-station positioning and coring device 100 provided in the present solution is used, the outer mold 201 is placed on the positioning protrusion 112 of the bottom positioning component 11 manually or by a robot, the rear side of the outer mold 201 is conformed to the rear positioning plate 141, the handle 203 is tilted backward and positioned in the first V-shaped groove 143, and at the same time, the second driving member 121 of the left clamping component 12 and the right clamping component 13 simultaneously drives the moving plate 122 to drive the conforming clamping plate 123 to clamp on the outer wall of the outer mold 201, and the rear positioning plate 141 and the conforming clamping plates 123 on the left and right sides are assembled to form a cylindrical shape covering the outer mold. The outer wall of the outer mold 201, the first sensor 15 detects whether the outer mold 201 is in place. After the outer mold 201 is in place, the third driving member 61 of the inner core placing mechanism 6 drives the support frame 62 to drive the lifting hook 63 to descend and put the inner core 202 into the outer mold 201 for mold closing to obtain the molding cavity 205 of the crucible. At this time, the second sensor 16 detects and confirms whether the inner core 202 is in place. After confirming that the inner core 202 is in place, the fourth driving member 71 of the shielding module 7 drives the moving rod 72 to rise and drives the first shielding plate 73 to rise to a certain height, and the rotating driving module 4 drives the rotating workbench 4 6 drives the jig 1 to rotate from the bottom of the first baffle plate 73 to the sand-shooting station 2. At the same time, the third baffle plate 74 rotates with the jig 1. When the crucible mold 202 rotates to the sand-shooting station, the fifth driving member 472 drives the anti-rotation pin 473 to extend into the positioning hole of the positioning ear 471 to stop the rotation of the rotating worktable 46. At the same time, the sixth driving member 481 drives the positioning column 482 to move downward and support on the supporting column 483, so as to realize accurate positioning and support of the rotating worktable 46. Then the fourth driving member 71 drives the moving rod 72 to descend and drives the first baffle plate 73 to descend into place. At this time, The two first baffle plates 73, the third baffle plate 74 and the second baffle plate 75 form an enclosure to completely separate the sand shooting station 2 from the loading and unloading station 3 front and back. At this time, sand shooting is carried out at the sand shooting station 2, and the third driving member 61 of the inner core taking and placing mechanism 6 above the loading and unloading station 3 drives the support frame 62 to drive the lifting hook 63 to rise, and the handle 204 of the inner core 202 is inserted into the second V-shaped groove 633 of the action end 632 and rises to the set position together with the lifting hook 63, so that the inner core 202 is taken out and hung at the set position, and a new outer mold 201 is put back in for the next sand shooting operation.

[0055] The above are only some embodiments of the present invention. For those skilled in the art, several modifications and improvements can be made without departing from the inventive concept of the present invention, which all belong to the protection scope of the present invention.

Claims

1. A crucible double-station positioning and coring device, which is used to position and take the outer mold and inner core of the crucible mold, characterized in that: It includes two fixtures arranged front and back oppositely and used to fix the crucible mold, a rotating drive module driving the fixture to switch positions between a sand shooting station and a loading and unloading station, a frame arranged above the fixture, and an inner core picking and placing mechanism located above the loading and unloading station and used to pick and place the inner core in the crucible mold; the fixture is provided with a first sensor for detecting whether the outer mold is in place, and a second sensor for detecting whether the inner core is in place.

2. A crucible dual-station positioning and coring device as claimed in claim 1, characterized in that: The rotary drive module includes a base, a first drive member fixed on the base, a gear driven to rotate by the first drive member, a gear plate meshing with the gear, a support cylinder fixed above the gear plate, a rotary table fixed above the support cylinder, a limit assembly arranged on the base and the support cylinder and used to stop the rotary table, and a positioning support assembly arranged between the base and the rotary table.

3. A crucible double-station positioning and coring device as claimed in claim 2, characterized in that: The tooling fixture includes a bottom positioning component for positioning the bottom of the outer mold, a rear positioning component for contour positioning the rear side of the outer mold, a left clamping component for clamping and positioning the left side of the outer mold, and a right clamping component that is spliced ​​with the left clamping component and clamps and positions the right side of the outer mold.

4. A crucible dual-station positioning and coring device as claimed in claim 3, characterized in that: The bottom positioning assembly comprises a mounting plate mounted on the rotating workbench and a positioning protrusion fixed on the mounting plate and capable of extending into the bottom of the outer mold for contour positioning.

5. A crucible double-station positioning and coring device as claimed in claim 4, characterized in that: The rear positioning assembly comprises a rear positioning plate extending upward from the mounting plate and conforming to the rear side wall of the outer mold, and a receiving seat fixed on the rear positioning plate and used for placing the handle of the outer mold.

6. A crucible double-station positioning and coring device as claimed in claim 5, characterized in that: The first sensor is arranged on the receiving seat, and the receiving seat is provided with a first V-shaped groove for positioning the handle of the inner core.

7. A crucible dual-station positioning and coring device as claimed in claim 5, characterized in that: The left clamping assembly has the same structure as the right clamping assembly and both include a second driving member fixed to the rotating workbench, a movable plate driven by the second driving member to move left and right, and a contoured clamping plate fixed to the movable plate and arranged to conform to the outer wall of the outer mold.

8. A crucible dual-station positioning and coring device as claimed in claim 7, characterized in that: The second sensor is arranged on the side walls of the rear positioning plate and the left and right contour clamping plates.

9. A crucible dual-station positioning and coring device as claimed in claim 1, characterized in that: The inner core taking and placing mechanism includes a third driving member fixed on the frame, a support frame driven by the third driving member to move up and down, and a pair of lifting hooks arranged on the support frame front and back relative to each other and lifting the inner core upward and taking it out.

10. A crucible dual-station positioning and coring device as claimed in claim 2, characterized in that: It also includes a shielding module for shielding sand particles, which is arranged on the frame and located between the sand shooting station and the loading and unloading station. The shielding module includes a fourth driving member fixed on the frame, a moving rod driven by the fourth driving member to move up and down, a first shielding plate fixed at the lower end of the moving rod, a second shielding plate fixedly installed on the frame and located above one side of the loading and unloading station, and a third shielding plate for shielding sand particles, which is arranged on the rotating workbench and located below the frame.

Images