Core shooting machine driving control system and core shooting machine

Abstract

A core shooter drive control system and a core shooter, relating to the technical field of casting molding equipment, wherein the base frame is provided with two first track frames perpendicular to the extension direction of the base frame, and the two first track frames are provided with crisscross mounting frames, and the mounting frames can reciprocate between the core making station and the core taking station along the first track frames; the mold lifting system also includes a plurality of first servo motors arranged in the base frame, the output end of the first servo motor is connected to a first lead screw through a reducer, the first lead screw penetrates into the first track frame and is connected to a threaded sleeve through a thread, and a lifting block is fixed to the top of the threaded sleeve. The oil circuit layout is saved, making the lifting system more concise, and the lead screw lifting wear is small, which is simpler for inspection and maintenance, and the startup is smooth, the noise is low, the service life is long, and the core box mold can be lifted for a long time to maintain the sealing with the core shooting end.

Description

Technical Field

[0001] The invention relates to the technical field of casting molding equipment, in particular to a core shooting machine drive control system and a core shooting machine. Background Art

[0002] The socket sand core of cast pipe plays an important role in the casting process. It is mainly used to form the cavity and complex shape inside the socket of cast pipe. The socket sand core is widely used in the casting production of various pipes, such as boiler pipes, water supply and drainage pipes, etc., to meet the needs of different industries. It is an indispensable part of the casting process. Its performance and quality directly affect the overall quality and performance of the casting.

[0003] The preparation of the socket sand core requires processes such as raw material preparation, sand mixing, core making, demoulding and dipping. During core making and demoulding, a core shooting machine is required, including a core shooting end and a mold end. The mold end includes a core box mold and a track. The core box mold is moved back and forth between the bottom of the core shooting end and the coring station by a driving device. When it is at the bottom of the core shooting end, a jacking device is required to be set at the track to jack it up and fit it tightly with the core shooting end. The core sand enters the core box mold from the core shooting end to be formed. However, the existing jacking devices all adopt the form of multiple oil cylinders. However, due to the characteristics of the oil cylinder itself, the oil circuit is complicated and requires a large space. Once a certain oil cylinder leaks, is blocked or has improper pressure regulation and other faults, the lifting and lowering will be asynchronous, resulting in asynchronous lifting of the core box mold. On the one hand, it will aggravate the damage to the oil cylinder, and on the other hand, it will not fit well with the core shooting end, resulting in sand leakage during core making.

[0004] In addition, the core box mold needs to be opened and closed during core making and core removal. The existing opening and closing mold adopts a method of using an oil cylinder to drive the two molds to move, thereby driving the two-side molds to move along the guide rod. After long-term use, as the guide sleeve and the guide rod wear, there will be errors in the distance that the two molds move toward or away from each other, and the opening and closing are not correct. On the one hand, sand leakage occurs, and on the other hand, flash burrs appear on the sand core, affecting the quality of the sand core. Summary of the invention

[0005] In order to solve the above problems, the present invention provides a core shooting machine drive control system and a core shooting machine.

[0006] The technical solution of the present invention is as follows:

[0007] A core shooting machine drive control system is located below a core making station and a core taking station, and the core making station and the core taking station are arranged adjacent to each other, comprising:

[0008] The support system includes a plurality of chassis arranged side by side, wherein two first track frames perpendicular to the extension direction of the chassis are arranged on the chassis, and a crisscross-shaped mounting frame is movable on the two first track frames, wherein the mounting frame can reciprocate between the core making station and the core taking station along the first track frames, and the mounting frame includes a second track frame located on the first track frame and parallel to the first track frame and a third track frame perpendicular to the first track frame;

[0009] The core box system includes two groups of semicircular molds located on the third track frame, and the two groups of semicircular molds can move toward or away from each other along the third track frame, and a cylindrical core rod is arranged between the two groups of semicircular molds, and the cylindrical core rod can move in the vertical direction;

[0010] The driving system includes a reciprocating system, a mold lifting system, and a mold opening and closing system. The reciprocating system includes two telescopic cylinders installed on the base frame and respectively located outside the two first track frames. The output ends of the two telescopic cylinders are connected to the side of any third track frame, and can drive the mounting frame to slide along the first track frame.

[0011] The mold lifting system also includes a plurality of first servo motors arranged in the base frame, and are respectively located on one side of the intersection of the base frame and the first track frame. The output end of the first servo motor is connected to a first lead screw through a reducer, and the first lead screw is vertically upward and located at the intersection of the base frame and the first track frame. The first lead screw penetrates into the first track frame and is connected to a threaded sleeve through a thread, and a lifting block is fixed to the top of the threaded sleeve. A through groove for the threaded sleeve to pass through is correspondingly opened on the first track frame;

[0012] The mold opening and closing system includes two connecting frames installed on the second track frame and are respectively located on the outside of the third track frame. A second servo motor is installed on the side of the connecting frame, and its output end is connected to a second lead screw through a reducer. The second lead screw is arranged parallel to the third track frame, and two sections of reverse threads are provided on the outer edge surface. Threaded cylinders that respectively engage with the reverse threads are installed on the sides of the two sets of semicircular molds.

[0013] In order to make the installation frame move more smoothly along the first track frame, moving wheels are installed inside the two ends of the second track frame, and the moving wheels are located outside the third track frame and contact the first track frame.

[0014] Guide wheels are installed at both ends of the opposite sides of the two second track frames. The guide wheels are arranged in contact with the first track frame, and the axes are arranged vertically.

[0015] In order to improve the stability when lifting the mold, ensure that the center of the intersection of the second track frame and the third track frame coincides with the center of the threaded sleeve, and the distance between the center points of the two threaded sleeves along the extension direction of the first track frame is consistent with the midpoint distance between the two intersections of the second track frame and the third track frame in this direction.

[0016] In order to make the two molds more stable and guide them when moving, guide rails are arranged on the two third track frames, and a plurality of guide slide blocks slidably connected to the guide rails are installed at the bottom of the semicircular mold.

[0017] In order to support the mold opening and closing system and make it more stable, two U-shaped frames are provided at the bottom of the third track frame and are arranged vertically with the third track frame, and their vertical ends extend upward to abut against the two connecting frames.

[0018] In order to drive the cylindrical core rod to move up and down, realize the core pulling action, and facilitate the separation of the core rod from the sand core made in the mold, the driving system also includes a core rod lifting system, which includes two mounting plates connected between the second track frame and the third track frame, a third servo motor is installed below the mounting plate, and the output end of the third servo motor is connected to the third lead screw through a reducer;

[0019] The third lead screw passes through the mounting plate and is connected to the lifting seat via threads. The bottom of the cylindrical core rod is fixed to the lifting seat via a locking piece and can move up and down with the lifting seat.

[0020] In order to ensure that the lifting seat is more stable when lifting and lowering, and moves strictly in the vertical direction, a lifting guide rod is arranged at the bottom of the lifting seat, and the lifting guide rod passes through the mounting plate and the U-shaped frame and is slidably connected with the two.

[0021] The specific design of the locking piece is that a fixing frame is installed on the bottom surface of the cylindrical core rod, and the locking piece includes a locking cylinder installed on the upper end of the lifting seat, the output end of the locking cylinder faces the fixing frame and is installed with a wedge block, and a locking groove cooperating with the wedge block is opened at the fixing frame.

[0022] A core shooting machine comprises the core shooting machine driving control system.

[0023] The beneficial effects of the present invention are as follows: the present invention is a core shooting machine driving control system and a core shooting machine, which can firstly drive two groups of semicircular molds to move back and forth between a core making station and a core taking station along a first track frame by setting a telescopic cylinder, thereby meeting the requirements of sand core preparation and core taking after the preparation is completed;

[0024] Secondly, different from the existing oil cylinder lifting core box mold, this solution uses four sets of servo motors to simultaneously drive the corresponding screws to rotate, and then drive the threaded sleeve to move upward synchronously to achieve the lifting of the core box mold, saving the oil circuit layout, making the lifting system more concise, and the screw lifting wear is small, which is easier for inspection and maintenance, stable startup, low noise, long service life, and can lift the core box mold for a long time to maintain the sealing with the core shooting end;

[0025] Finally, through the design of the mold opening and closing system, a servo motor is used to drive the lead screw to rotate, and then the two molds are driven to move through two sections of reverse threads to complete the mold opening and closing. This can effectively avoid the need for the oil cylinder to be used in conjunction with the guide rod and guide sleeve, which causes the wear of the guide rod, and avoids the problem of incorrect opening and closing of the molds caused by the error in the opening and closing distance of the two molds. Compared with the oil cylinder drive, it has low energy consumption and strong reliability, makes the closure of the two molds more fitting, and improves the quality of the sand core. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] By reading the detailed description of the preferred embodiment below, the scheme and advantages of the present application will become clear to those skilled in the art. The accompanying drawings are only for the purpose of illustrating the preferred embodiment and are not to be considered as limiting the present invention.

[0027] In the attached picture:

[0028] Figure 1 It is a partial structural schematic diagram of the core making system;

[0029] Figure 2 It is a schematic diagram of the drive control system structure;

[0030] Figure 3 is a first cross-sectional view;

[0031] Figure 4 It is a schematic diagram of the structure of the mold opening and closing system;

[0032] Figure 5 This is a schematic diagram of the system structure without core box installed;

[0033] Figure 6 is a second cross-sectional view;

[0034] Figure 7 is the third sectional view;

[0035] The components represented by the reference numerals in the figure are:

[0036] 1. Core making station; 2. Coring station; 3. Support system; 31. Base frame; 32. First track frame; 33. Mounting frame; 331. Second track frame; 332. Third track frame; 333. Guide rail; 334. Guide slide block; 34. Moving wheel; 35. Guide wheel; 4. Core box system; 41. Semicircular mold; 42. Cylindrical core rod; 5. Reciprocating system; 51. Telescopic cylinder; 52. Fixed plate; 6. Mold lifting system; 61. First servo motor; 62 , first lead screw; 63, threaded sleeve; 64, lifting block; 65, through slot; 7, mold opening and closing system; 71, connecting frame; 72, second servo motor; 73, second lead screw; 74, threaded barrel; 75, U-shaped frame; 8, core rod lifting system; 81, mounting plate; 82, third servo motor; 83, third lead screw; 84, lifting seat; 85, locking piece; 851, locking cylinder; 852, wedge block; 853, locking slot; 86, lifting guide rod; 87, fixed frame. DETAILED DESCRIPTION

[0037] The exemplary embodiments of the present disclosure will be described in more detail below in conjunction with the accompanying drawings. It should be noted that these embodiments are provided to enable a more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art. The present disclosure can be implemented in various forms and should not be limited by the embodiments described herein. Figure 1-7 A core shooting machine drive control system shown in FIG. Figure 1 , located below the core making station 1 and the coring station 2, and the core making station 1 is arranged adjacent to the coring station 2, the core making station 1 is the position for sand shooting, the core shooting end and the core box system 4 in this scheme are prior art, this scheme is mainly an improved drive system, and the coring station 2 is mainly a core frame that cooperates with a mobile truss robot to take out the sand core in the core box mold, which is also prior art, so the specific design of the core making station 1 and the coring station 2 is not repeated, and the drive control system in this scheme specifically includes: a support system 3, combined with Figure 2, mainly used for supporting the core box system 4, to provide mobile support, including a plurality of base frames 31 arranged side by side, in this scheme, two base frames 31 are provided, and are arranged in parallel, and two reinforcing frames are connected between the two, and the base frame 31 is provided with two first track frames 32 perpendicular to the extension direction of the base frame 31, the two first track frames 32 are arranged at intervals, and the self-made core station 1 extends to the coring station 2, and a support frame is provided at the bottom of the end of the extension direction for supporting the first track frame 32, and the two first track frames 32 are movable The crisscross-shaped mounting frame 33 can reciprocate along the first track frame 32 between the core making station 1 and the core taking station 2. The mounting frame 33 includes a second track frame 331 located on and parallel to the first track frame 32 and a third track frame 332 perpendicular to the first track frame 32. The second track frame 331 and the first track frame 32 are in the same vertical plane, the second track frame 331 and the third track frame 332 are in the same horizontal plane, and the upper and lower end surfaces are flush. The upper end of the third track frame 332 is used for slidingly installing the core box system 4.

[0038] The movement of the mounting frame 33 is mainly driven by the reciprocating system 5 of the driving system, wherein the reciprocating system 5 includes two telescopic cylinders 51 installed on the base frame 31, and the output ends of the telescopic cylinders 51 are facing the direction of the coring station 2 and are respectively located on the outsides of the two first track frames 32, and the output ends of the two telescopic cylinders 51 are connected to the side of any third track frame 332, and a fixed plate 52 is installed on the outside of the third track frame 332, and the output end of the telescopic cylinder 51 is connected to the fixed plate 52. In this scheme, the output end of the telescopic cylinder 51 is connected to the side of a third track frame 332 away from the telescopic cylinder 51, which can drive the mounting frame 33 to slide along the first track frame 32. When the telescopic cylinder 51 is extended, the core box system 4 is pushed to move to the bottom of the coring station 2 along with the mounting frame 33, and when the telescopic cylinder 51 is retracted, the core box system 4 is driven to move to the core making station 1 along with the mounting frame 33.

[0039] It should be noted that, combined with Figure 3 , moving wheels 34 are installed inside the two ends of the second track frame 331, and the moving wheels 34 are located outside the third track frame 332 and contact the first track frame 32. There are four groups of moving wheels 34, and two groups are respectively arranged at the two ends of each second track frame 331. When the telescopic cylinder 51 drives the mounting frame 33 to move, the moving wheels 34 installed on the second track frame 331 rotate along the first track frame 32. As an option but not a limitation, the position of the sensor for sand core quality warning can be selected at the contact position between the second track frame 331 and the four groups of moving wheels 34. By comprehensively analyzing the pressure signals at all four places, the core shooting quality abnormality is constantly monitored, so that the abnormality can be found in time before coring, and the defective products can be processed by classification.

[0040] In this embodiment, the core box system 4 is also included. Specifically, Figure 2 , including two groups of semicircular molds 41 located on the third track frame 332, and the two groups can move toward or away from each other along the third track frame 332, a cylindrical core rod 42 is arranged between the two groups of semicircular molds 41, the semicircular molds 41 and the cylindrical core rod 42 are existing components, the gap between the molds and the core rod is used for forming the sand core, the specific structure is not redundantly described, and the cylindrical core rod 42 can move in the vertical direction, and the movement of the two groups of semicircular molds 41 is mainly driven by the opening and closing mold system 7 of the driving system, which specifically includes two connecting frames 71 installed on the second track frame 331, overlapped at the upper parts of the two ends of the second track frames 331, and respectively located on the third track frame 331. On the outside of the frame 332, a second servo motor 72 is installed on the side of the connecting frame 71, and the two second servo motors 72 are centrally symmetrical with respect to the cylindrical core rod 42 to ensure the balanced driving of the two groups of semicircular molds 41, and the output end thereof is connected to a second lead screw 73 through a reducer, the second lead screw 73 is arranged in parallel with the third track frame 332, and two sections of reverse threads are provided on the outer edge surface, and threaded barrels 74 respectively engaged with the reverse threads are installed on the sides of the two groups of semicircular molds 41, and the second lead screw 73 is driven to rotate by the drive of the second servo motor 72, and then the two groups of semicircular molds 41 are driven to move through the cooperation of the reverse threads and the threaded barrel 74 to realize the opening and closing of the molds.

[0041] Moreover, combined with Figure 2 and Figure 5 Two U-shaped frames 75 are provided at the bottom of the third track frame 332 and are arranged vertically with the third track frame 332 . The vertical ends of the U-shaped frames 75 extend upward and abut against the two connecting frames 71 . The two ends of the U-shaped frames 75 can support the connecting frames 71 , thereby improving the stability of the connecting frames 71 .

[0042] When the core box system 4 moves to the core making station 1 for core making, the core box system 4 needs to be lifted up so that the semicircular mold 41 fits the core shooting end. The lifting of the core box system 4 in this solution is mainly achieved by the mold lifting system 6 of the driving system, wherein, combined with Figure 3 and Figure 7The mold lifting system 6 includes a plurality of first servo motors 61 arranged in the base frame 31, and are respectively located on one side of the intersection of the base frame 31 and the first track frame 32. The output end of the first servo motor 61 is connected to a first lead screw 62 through a reducer, and the first lead screw 62 is vertically upward and located at the intersection of the base frame 31 and the first track frame 32. The first lead screw 62 penetrates into the first track frame 32 and is connected to a threaded sleeve 63 through a thread, and a lifting block 64 is fixed to the top of the threaded sleeve 63. A through groove 65 for the threaded sleeve 63 to pass through is correspondingly opened on the first track frame 32, and the threaded sleeve 63 and the through groove 65 are connected to each other. 5 are all set to be square, and the through groove 65 can limit the rotation of the threaded sleeve 63. Since the intersection of the base frame 31 and the first track frame 32 is a square area, it should be ensured that the distance between the center points of the two threaded sleeves 63 along the extension direction of the first track frame 32 is consistent with the distance between the midpoints of the two intersections of the second track frame 331 and the third track frame 332 in this direction, that is, it should be ensured that the center point of the threaded sleeve 63 and the center point of the intersection of the second track frame 331 and the third track frame 332 are on the same vertical straight line, so that when lifting, the force acts on the four intersections of the criss-cross mounting frame 33, making the lifting more stable.

[0043] Based on the above structure, guide rails 333 are arranged on the two third track frames 332, and multiple guide sliders 334 slidably connected to the guide rails 333 are installed at the bottom of the semicircular mold 41. When the second servo motor 72 drives the two groups of semicircular molds 41 to move toward or away from each other, the guide sliders 334 slide along the guide rails 333.

[0044] It should be noted that guide wheels 35 are installed at both ends of the opposite sides of the two second track frames 331. The guide wheels 35 are arranged in contact with the first track frame 32, and the axis is arranged vertically. By setting the guide wheels 35, on the one hand, when the second track frame 331 moves along the first track frame 32, the guide wheels 35 move along the side of the first track frame 32 to play a guiding role. Secondly, when the mold lifting system 6 drives the core box system 4 to move up and down, the guide wheels 35 can slide up and down along the first track frame 32, and when the second track frame 331 moves to the highest position, it still conflicts with the side of the first track frame 32, thereby limiting the second track frame 331.

[0045] In this scheme, the driving and lifting of the mandrel are also improved, wherein, Figure 5-Figure 7 , Figure 7It is a cross-sectional view when the core box system 4 is directly above the mold jacking system 6. The drive system also includes a core rod lifting system 8, which includes a mounting plate 81 connected between two second track frames 331 and the third track frame 332. The mounting plate 81 is flush with the lower end surfaces of the second track frame 331 and the third track frame 332. A third servo motor 82 is installed below the mounting plate 81, and the output end of the third servo motor 82 is connected to a third lead screw 83 through a reducer. The third lead screw is vertically arranged upward, and the third lead screw 83 passes through the mounting plate 81 and is connected to a lifting seat 84 through threads. The lifting seat 84 is a frame-shaped structure. The cylindrical core rod 42 falls on the upper end of the frame-shaped structure, and the bottom of the cylindrical core rod 42 is fixed to the lifting seat 84 by a locking piece 85, and can move up and down with the lifting seat 84. The third servo motor 82 drives the third lead screw 83 to rotate, and the lifting seat 84 is driven to move downward through the engagement of the thread, and then the cylindrical core rod 42 is driven to move downward through the locking piece 85, completing the downward pulling action of the cylindrical core rod 42, so that the cylindrical core rod 42 is separated from the manufactured sand core. Compared with the existing form of lifting the sand core upward, the bottom of the sand core can be effectively protected to prevent damage to the position of the lifting sand core.

[0046] In order to ensure the stability of the lifting seat 84 during lifting, a lifting guide rod 86 is provided at the bottom of the lifting seat 84. The lifting guide rod 86 passes through the mounting plate 81 and the U-shaped frame 75 and is slidably connected to the two. In this solution, four lifting guide rods 86 are provided, which are symmetrically arranged around the third lead screw 83 and pass through two U-shaped frames 75 respectively, so as to play a guiding and limiting role in the lifting and lowering of the lifting seat 84.

[0047] In this embodiment, a fixing frame 87 is installed on the bottom surface of the cylindrical mandrel 42, and the fixing frame 87 is L-shaped. Specifically, at least two fixing frames 87 are provided, and are arranged opposite to each other on the bottom surface of the cylindrical mandrel 42. The locking member 85 includes a locking cylinder 851 installed on the upper end of the lifting seat 84. The locking cylinder 851 is located in the lifting seat 84 of the frame-shaped structure, and is separated from the cylindrical mandrel 42 by the frame beam at the upper end. The locking cylinder 851 is arranged corresponding to the fixing frame 87. There are two of them, which are arranged opposite to each other. The output end of the locking cylinder 851 faces the fixed frame and is installed with a wedge block 852. The vertical section of the fixed frame 87 is provided with a locking groove 853 that cooperates with the wedge block 852. The locking groove 853 corresponds to the shape of the wedge block 852. The locking cylinder 851 drives the wedge block 852 to extend into the locking groove 853, and the cylindrical core rod 42 is fixed to the lifting seat 84 through the cooperation of the wedge block 852 and the locking groove 853.

[0048] Specifically, when preparing the sand core, the two semicircular molds 41 are in a closed state, and the first servo motor 61 drives the first lead screw 62 to rotate, thereby driving the threaded sleeve 63 to move upward, lifting the second track frame 331 upward, and the core box system 4 moves upward with it until it fits with the core shooting end, and the core shooting end shoots the core, and the sand core is formed in the core box system 4. The first servo motor 61 drives the threaded sleeve 63 to descend, so that the moving wheel 34 of the second track frame 331 contacts the first track frame 32, and the telescopic cylinder 51 is started to drive the core box system 4 to move with the mounting frame 33 to the coring station 2, and the third servo motor 82 is started. , driving the third lead screw 83 to rotate, and then driving the cylindrical core rod 42 to move downward along with the lifting seat 84 to separate from the sand core, starting the second servo motor 72, driving the second lead screw 73 to rotate, and driving the two sets of semicircular molds 41 to move away from each other through the thread, releasing the limit on the sand core, and lifting the sand core by the truss robot of the coring station 2 to carry out the next process, and then the second servo motor 72 drives the semicircular mold 41 to close, and the second servo motor 72 drives the cylindrical core rod 42 to reset, and the telescopic cylinder 51 drives the core box system 4 to move along with the mounting frame 33 to the threaded sleeve 63 position at the bottom of the core making station 1 to make the next sand core.

Claims

1. A core shooting machine drive control system, located below a core making station (1) and a core taking station (2), wherein the core making station (1) and the core taking station (2) are arranged adjacent to each other, characterized in that: include: The support system (3) comprises a plurality of base frames (31) arranged side by side, wherein the base frames (31) are provided with two first track frames (32) perpendicular to the extension direction of the base frames (31), and the two first track frames (32) are provided with crisscross-shaped mounting frames (33) movably, wherein the mounting frames (33) are capable of reciprocating along the first track frames (32) between the core making station (1) and the core taking station (2), and the mounting frames (33) comprise a second track frame (331) located on the first track frame (32) and parallel thereto, and a third track frame (332) perpendicular to the first track frame (32); The core box system (4) comprises two groups of semicircular molds (41) located on a third track frame (332), and the two groups of semicircular molds (41) are capable of moving toward or away from each other along the third track frame (332), and a cylindrical core rod (42) is arranged between the two groups of semicircular molds (41), and the cylindrical core rod (42) is capable of moving in a vertical direction; The driving system comprises a reciprocating system (5), a mold lifting system (6) and a mold opening and closing system (7), wherein the reciprocating system (5) comprises two telescopic cylinders (51) mounted on a base frame (31) and respectively located outside two first track frames (32), and output ends of the two telescopic cylinders (51) are connected to the side of any third track frame (332) to drive the mounting frame (33) to slide along the first track frame (32); The mold lifting system (6) includes a plurality of first servo motors (61) arranged in the base frame (31), and respectively located on one side of the intersection of the base frame (31) and the first track frame (32); the output end of the first servo motor (61) is connected to a first lead screw (62) via a reducer, and the first lead screw (62) is vertically upward and located at the intersection of the base frame (31) and the first track frame (32); the first lead screw (62) penetrates into the first track frame (32) and is connected to a threaded sleeve (63) via a thread, and a lifting block (64) is fixed to the top of the threaded sleeve (63); and a through slot (65) for the threaded sleeve (63) to pass through is correspondingly opened on the first track frame (32); The mold opening and closing system (7) comprises two connecting frames (71) mounted on the second track frame (331) and respectively located outside the third track frame (332); a second servo motor (72) is mounted on the side of the connecting frame (71); and the output end of the second servo motor (72) is connected to a second lead screw (73) via a reducer; the second lead screw (73) is arranged in parallel with the third track frame (332); and two sections of reverse threads are provided on the outer edge surface of the second lead screw (73); and threaded barrels (74) respectively meshing with the two sections of reverse threads are mounted on the side of the two sets of semicircular molds (41).

2. The core shooting machine drive control system according to claim 1, characterized in that: Moving wheels (34) are installed inside both ends of the second track frame (331), and the moving wheels (34) are located on the third track frame (332). The outer side is in contact with the first track frame (32).

3. The core shooting machine drive control system according to claim 2, characterized in that: Guide wheels (35) are installed at both ends of the opposite sides of the two second track frames (331); the guide wheels (35) are arranged in contact with the first track frame (32), and the axes of the guide wheels (35) are arranged vertically.

4. The core shooting machine drive control system according to claim 1, characterized in that: First track rack The distance between the center points of the two threaded sleeves (63) in the extension direction (32) and the second track frame in the same direction (331) is consistent with the midpoint distance between the two intersection positions of the third track frame (332).

5. The core shooting machine drive control system according to claim 1, characterized in that: The two third track frames (332) are each provided with a guide rail (333), and the bottom of the semicircular mold (41) is provided with a plurality of guide slide blocks (334) slidably connected to the guide rail (333).

6. The core shooting machine drive control system according to claim 1, characterized in that: Two U-shaped frames (75) are provided at the bottom of the third track frame (332) and are arranged vertically with the third track frame (332). The vertical ends of the U-shaped frames (75) extend upwards and abut against the two connecting frames (71).

7. The core shooting machine drive control system according to claim 6, characterized in that: The drive system further comprises a mandrel lifting system (8), the mandrel lifting system (8) comprising a mounting plate (81) connected between the two second track frames (331) and the two third track frames (332), a third servo motor (82) being mounted below the mounting plate (81), and an output end of the third servo motor (82) being connected to a third lead screw (83) via a reducer; The third lead screw (83) passes through the mounting plate (81) and is connected to a lifting seat (84) via threads. The bottom of the cylindrical core rod (42) is fixed to the lifting seat (84) via a locking member (85) and can move up and down along with the lifting seat (84).

8. The core shooting machine drive control system according to claim 7, characterized in that: A lifting guide rod (86) is provided at the bottom of the lifting seat (84), and the lifting guide rod (86) passes through the mounting plate (81) and the U-shaped frame (75) and is slidably connected to the two.

9. The core shooting machine drive control system according to claim 7, characterized in that: A fixing frame (87) is installed on the bottom surface of the cylindrical core rod (42), and the locking member (85) includes a locking cylinder (851) installed on the upper end of the lifting seat (84). The output end of the locking cylinder (851) faces the fixing frame (87) and is installed with a wedge block (852). The fixing frame (87) is provided with a locking groove (853) that cooperates with the wedge block (852).

10. A core shooting machine, characterized in that: A core shooting machine drive control system having the core shooting machine drive control system as claimed in any one of claims 1 to 9.

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