Die moving device for casting exhaust pipe

Abstract

The invention relates to the technical field of exhaust pipe casting, and discloses an exhaust pipe casting mold moving device which comprises a vehicle body frame, self-locking universal wheels are fixedly installed on the periphery of the lower end face of the vehicle body frame, support plates are fixedly installed on the left side and the right side of the upper end face of the vehicle body frame, and a workbench is slidably installed between the support plates on the left side and the right side. The lifting mechanism is arranged in an inner cavity of the vehicle body frame; the limiting mechanism is arranged on the inner side wall of the workbench; and the cooling mechanism is arranged on the upper end face of the workbench, and the cooling mechanism is used for conducting air cooling heat dissipation on the mold plate. By arranging the lifting mechanism, corresponding adaptive adjustment can be carried out according to the height of an external working table top, mold plates can be conveyed to mold plate placing plates with different heights, meanwhile, by arranging the limiting mechanism, the stability of the mold plates during transportation can be guaranteed, and the safety performance of the whole device is greatly improved.

Description

Technical Field

[0001] The invention relates to the technical field of exhaust pipe casting, in particular to a mold moving device for exhaust pipe casting. Background Art

[0002] The exhaust pipe of a car engine is connected to the cylinders, and the exhaust of each cylinder is collected and introduced into the exhaust manifold. The engine exhaust pipe has divergent pipes, and its function is to minimize exhaust resistance and avoid mutual interference between cylinders. Since the shape of the engine exhaust pipe is irregular, the casting process is mainly used in its production. In the casting production workshop, the transfer and movement of the mold plate will be involved. For example, in the mold plate cleaning process, the mold plate needs to be transferred to the cleaning workshop, and after cleaning, the mold plate needs to be transported to the production workshop; after the sand casting mold plate is dipped, it also needs a cart for transportation, and other processes, etc., will involve the turnover of the mold plate. In order to improve turnover efficiency and save labor, a cart is often used to transport the mold plate.

[0003] After searching, it is found that a mold moving device for exhaust pipe casting proposed in patent publication number CN116833394A relates to the technical field of casting mold plate moving equipment, including a chassis, a plurality of mold plate placing plates fixedly installed between four supporting frames, and a lifting mechanism respectively provided with a lifting plate and two symmetrically distributed mold plate conveying mechanisms, and a limiting mechanism is installed on the side of the mold plate conveying mechanism close to the supporting frame.

[0004] The above patent can make corresponding adaptation adjustments according to the height of the external work surface, and at the same time realize the delivery of the mold plate to the mold plate placement plate of different heights. However, it only has the function of lifting and lowering the work surface. During normal use, due to factors such as the equipment motor, the equipment will have a certain vibration amplitude. If the mold plate is not fixed, it is very easy to cause the mold plate to slip during transportation, causing damage to it, and even the high temperature of the mold plate will cause physical harm to the workers who carry it, which poses certain safety hazards. Therefore, there is an urgent need for a mold moving device for exhaust pipe casting to solve such problems. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] The object of the present invention is to provide a mold moving device for exhaust pipe casting, so as to solve the problem that the mold plate moving device proposed in the above background technology lacks the function of limiting and fixing the high-temperature mold plate.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solution: a mold moving device for exhaust pipe casting, comprising a body frame, self-locking universal wheels are fixedly installed around the lower end surface of the body frame, bracket plates are fixedly installed on the left and right sides of the upper end surface of the body frame, and a workbench is slidably installed between the bracket plates on the left and right sides, and also includes:

[0009] A lifting mechanism, the lifting mechanism is arranged in the inner cavity of the vehicle body frame, and the lifting mechanism is used to change the height of the workbench;

[0010] A mold plate, a cooling platform is fixedly installed in the middle of the upper end surface of the workbench, and the mold plate is placed on the upper end surface of the cooling platform;

[0011] A limiting mechanism, wherein the limiting mechanism is arranged on the inner side wall of the workbench and is used to clamp the mold plate;

[0012] A cooling mechanism is arranged on the upper end surface of the workbench and is used for air cooling and heat dissipation of the mold plate.

[0013] Preferably, the lifting mechanism includes a transmission rod rotatably mounted on the left and right sides of the inner cavity of the vehicle body frame, and a driving bevel gear fixedly mounted on the left and right sides of the side walls of the transmission rod; a lifting screw is rotatably mounted on the inner side wall of the bracket plate, a reversing bevel gear is fixedly mounted on the lower end surface of the lifting screw, and a lifting seat is threadedly mounted on the middle part of the side wall of the lifting screw.

[0014] Preferably, a lifting motor is fixedly installed in the middle part of the inner cavity of the vehicle body frame through a frame, the lifting motor is a dual-axis motor, the two output shaft ends of the lifting motor are respectively fixedly connected to the transmission rod, the driving bevel gear is meshed with the reversing bevel gear, the lifting screw is connected through the vehicle body frame, and the lifting seat is fixedly connected to the workbench.

[0015] Preferably, sliding rails are fixedly installed on the front and rear sides of the inner walls of the left and right bracket plates, and sliding rail seats are slidably installed in the inner cavity of the sliding rails. The sliding rail seats are fixedly installed on the side walls of the workbench, and ventilation grooves are provided on the front and rear end surfaces of the body frame. The driving bevel gears on the left and right sides are arranged in a mirror-symmetrical manner.

[0016] Preferably, the limiting mechanism includes support plates fixedly mounted on the left and right sides of the inner wall of the workbench, and bidirectional screws are rotatably mounted in the inner cavities of the support plates on the left and right sides, and movable seats are threadedly mounted on the left and right sides of the side walls of the bidirectional screw, and a transmission worm gear is fixedly mounted on the middle part of the side wall of the bidirectional screw. A limiting motor is also fixedly mounted on the side of the inner wall of the workbench close to the support plate through a frame, and a transmission worm is fixedly mounted on the output shaft end of the limiting motor, and the transmission worm is meshingly connected with the transmission worm gear, and the thread directions of the left and right ends of the bidirectional screw are opposite.

[0017] Preferably, an oblique groove is provided around the upper end surface of the workbench, an oblique column is slidably installed in the inner cavity of the oblique groove, a clamping seat is fixedly installed on the upper end surface of the oblique column, a transverse groove is provided on the upper end surface of the movable seat, and the lower end of the oblique column slides in the inner cavity of the transverse groove.

[0018] Preferably, the cooling mechanism includes an inflatable column fixedly mounted around the upper end surface of the workbench, a piston cylinder fixedly mounted on the side wall of the inflatable column, a piston block slidably mounted in the inner cavity of the piston cylinder, a piston rod fixedly mounted on the left end of the piston block, a return spring wound around the side wall of the piston rod, and two ends of the return spring fixedly connected to the piston block and the inner wall of the piston cylinder respectively.

[0019] Preferably, a cooling pipe is fixedly installed on the upper end surface of the clamping seat, and the cooling pipe is connected with the piston rod through the clamping seat. An air outlet is provided on the side wall of the piston rod, and the inner cavity of the air outlet is provided with a one-way air valve with the outlet toward the clamping seat. An air inlet is provided on the side wall of the piston block, and the inner cavity of the air inlet is provided with a one-way air valve with the outlet toward the left cavity of the piston cylinder. The inflation column is connected with the piston cylinder, and the inflation column is connected with the outside air.

[0020] Compared with the prior art, the present invention has the following beneficial effects:

[0021] 1. After the mold plate is placed on the cooling table, the invention can start the limit motor to rotate the transmission worm. Since the transmission worm is meshed with the transmission worm wheel, the transmission worm will drive the transmission worm wheel to rotate the bidirectional threaded rod. The left and right sides of the bidirectional threaded rod have opposite threads, and the moving seat is threadedly connected to the bidirectional threaded rod. When the bidirectional threaded rod rotates, under the limiting action of the oblique columns on both sides on the moving seat, the moving seats on the left and right sides will be simultaneously approached or moved away, and the oblique columns will slide in the inner cavity of the transverse groove on the moving seat, and the oblique columns will slide in the oblique grooves. At this time, the clamping seats located around the end surface of the workbench can approach each other to achieve fixed clamping of the mold plate, reducing the possibility of tilting and sliding of the mold plate during transportation, greatly improving the workers' transportation efficiency of the mold plate and improving the safety index of the workers' working scene.

[0022] 2. In the present invention, when all the clamping seats are moved toward the middle of the workbench, since the piston rod is fixedly connected to the clamping seat, the clamping seat can pull the piston rod to move the piston block to the left side of the inner cavity of the piston cylinder, compressing the return spring. At the same time, the volume of the left cavity of the piston cylinder also decreases, and the internal air pressure will be significantly increased. Finally, it can enter the inner cavity of the piston rod through the air outlet on the side wall of the piston rod, and then be ejected from the cooling pipe through the clamping seat, so that low-temperature and strong cold wind blows on the mold plate after the exhaust pipe is cast, so as to accelerate its cooling and facilitate the workers to quickly demold the exhaust pipe in the mold plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view schematic diagram of the overall structure of a mold moving device for exhaust pipe casting of the present invention;

[0024] Figure 2 It is a schematic diagram of the overall structure of a mold moving device for exhaust pipe casting according to the present invention from a top view;

[0025] Figure 3 It is a schematic diagram of a partial structure of a front view of a mold moving device for exhaust pipe casting of the present invention;

[0026] Figure 4 It is a bottom view structural diagram of a clamping mechanism of a mold moving device for exhaust pipe casting of the present invention;

[0027] Figure 5 It is a schematic diagram of the structure of the clamping mechanism of a mold moving device for exhaust pipe casting according to the present invention from a top view;

[0028] Figure 6 It is a schematic diagram of a partial structure of a top view of a mold moving device for exhaust pipe casting according to the present invention;

[0029] Figure 7 It is a schematic cross-sectional structure diagram of a piston rod of a mold moving device for exhaust pipe casting of the present invention;

[0030] Figure 8 The present invention is a kind of exhaust pipe casting mold moving device Figure 7 Schematic diagram of the enlarged structure of area A in the middle.

[0031] In the figure: 1. body frame; 11. self-locking universal wheel; 2. bracket plate; 21. slide rail; 22. slide rail seat; 3. workbench; 31. cooling table; 32. oblique groove; 33. oblique column; 4. lifting mechanism; 41. transmission rod; 42. driving bevel gear; 43. lifting screw; 44. reversing bevel gear; 45. lifting seat; 46. lifting motor; 5. mold plate; 6. limiting mechanism; 61. support plate; 62. bidirectional screw; 63. moving seat; 631. transverse groove; 64. transmission worm gear; 65. limiting motor; 66. transmission worm; 67. clamping seat; 7. cooling mechanism; 71. inflation column; 72. piston cylinder; 73. piston block; 731. air inlet; 74. piston rod; 741. air outlet; 75. reset spring; 76. cooling pipe. DETAILED DESCRIPTION

[0032] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0033] See also Figure 1-Figure 8 The present invention provides a technical solution for a mold moving device for exhaust pipe casting: a mold moving device for exhaust pipe casting, comprising a body frame 1, self-locking universal wheels 11 are fixedly installed around the lower end surface of the body frame 1, bracket plates 2 are fixedly installed on the left and right sides of the upper end surface of the body frame 1, and a workbench 3 is slidably installed between the bracket plates 2 on the left and right sides, and also includes:

[0034] A lifting mechanism 4, which is arranged in the inner cavity of the vehicle frame 1 and is used to change the height of the workbench 3;

[0035] The mold plate 5, a cooling platform 31 is fixedly installed in the middle of the upper end surface of the workbench 3, and the mold plate 5 is placed on the upper end surface of the cooling platform 31;

[0036] A limiting mechanism 6, which is arranged on the inner side wall of the workbench 3 and is used to clamp the mold plate 5;

[0037] The cooling mechanism 7 is arranged on the upper end surface of the workbench 3 , and is used for air cooling and heat dissipation of the mold plate 5 .

[0038] Further, the lifting mechanism 4 includes a transmission rod 41 rotatably mounted on the left and right sides of the inner cavity of the vehicle body frame 1, and a driving bevel gear 42 fixedly mounted on the left and right sides of the side wall of the transmission rod 41, a lifting screw 43 is rotatably mounted on the inner side wall of the bracket plate 2, a reversing bevel gear 44 is fixedly mounted on the lower end surface of the lifting screw 43, and a lifting seat 45 is threadedly mounted on the middle part of the side wall of the lifting screw 43;

[0039] A lifting motor 46 is fixedly installed in the middle of the inner cavity of the vehicle frame 1 through the frame. The lifting motor 46 is a double-shaft motor. The two output shaft ends of the lifting motor 46 are respectively fixedly connected to the transmission rod 41, the driving bevel gear 42 is meshed and connected with the reversing bevel gear 44, the lifting screw 43 is connected through the vehicle frame 1, and the lifting seat 45 is fixedly connected to the workbench 3;

[0040] Slide rails 21 are fixedly installed on the front and rear sides of the inner walls of the left and right bracket plates 2, and slide rail seats 22 are slidably installed in the inner cavity of the slide rails 21. The slide rail seats 22 are fixedly installed on the side walls of the workbench 3. Ventilation grooves are provided on the front and rear end surfaces of the vehicle body frame 1, and the driving bevel gears 42 on the left and right sides are arranged in a mirror-symmetrical manner.

[0041] It should be noted that the transmission rod 41 is rotated by starting the lifting motor 46. Since the driving bevel gears 42 on the left and right sides are arranged in a mirror-symmetrical manner, the driving bevel gear 42 is meshed and connected with the reversing bevel gear 44, and are respectively located on both sides of the reversing bevel gear 44. At this time, the driving bevel gear 42 will drive the reversing bevel gear 44 to make the lifting screws 43 on the left and right sides rotate in the same direction. The lifting seat 45 is threadedly connected to the lifting screw 43, and the slide rail seat 22 is fixedly installed on the side wall of the workbench 3. Under the limiting constraint of the slide rail 21 on the slide rail seat 22, the lifting seat 45 will move up and down on the side wall of the lifting screw 43, causing the height of the workbench 3 to change. At this time, the entire device can be adapted and adjusted accordingly according to the height of the external work surface, so as to realize the transportation of the mold plate to the mold plate placement plate at different heights, which greatly improves the versatility and adaptability of the entire device.

[0042] Further, the limiting mechanism 6 includes support plates 61 fixedly installed on the left and right sides of the inner wall of the workbench 3, and the inner cavities of the support plates 61 on the left and right sides are rotatably installed with bidirectional screws 62, and the left and right sides of the side walls of the bidirectional screw 62 are threadedly installed with moving seats 63, and the middle part of the side wall of the bidirectional screw 62 is fixedly installed with a transmission worm gear 64. The inner side wall of the workbench 3 is also fixedly installed with a limiting motor 65 through a frame on one side of the support plate 61, and the output shaft end of the limiting motor 65 is fixedly installed with a transmission worm 66, which is meshed and connected with the transmission worm gear 64, and the left and right ends of the bidirectional screw 62 have opposite thread directions;

[0043] An oblique groove 32 is provided around the upper end surface of the workbench 3, an oblique column 33 is slidably installed in the inner cavity of the oblique groove 32, a clamping seat 67 is fixedly installed on the upper end surface of the oblique column 33, a transverse groove 631 is provided on the upper end surface of the movable seat 63, and the lower end of the oblique column 33 slides in the inner cavity of the transverse groove 631.

[0044] It should be noted that after the worker places the mold plate 5 on the cooling table 31, the limit motor 65 can be started to rotate the transmission worm 66. Since the transmission worm 66 is meshed with the transmission worm wheel 64, the transmission worm 66 will drive the transmission worm wheel 64 to rotate the bidirectional threaded rod 62. The left and right sides of the bidirectional threaded rod 62 have opposite thread directions, and the movable seat 63 is threadedly connected to the bidirectional threaded rod 62. When the bidirectional threaded rod 62 rotates, under the limiting action of the oblique columns 33 on both sides on the movable seat 63, the movable seats 63 on the left and right sides will be simultaneously approached or moved away, and the oblique columns 33 can slide in the inner cavity of the transverse groove 631 on the movable seat 63, so that the oblique columns 33 slide in the oblique groove 32. At this time, the clamping seats 67 located around the upper end surface of the workbench 3 can approach each other to achieve fixed clamping of the mold plate 5, reducing the possibility of tilting and sliding of the mold plate 5 during transportation, greatly improving the workers' transportation efficiency of the mold plate 5 and improving the safety index of the workers' working scene.

[0045] Furthermore, the cooling mechanism 7 includes an inflatable column 71 fixedly mounted around the upper end surface of the workbench 3, a piston cylinder 72 fixedly mounted on the side wall of the inflatable column 71, a piston block 73 slidably mounted in the inner cavity of the piston cylinder 72, a piston rod 74 fixedly mounted on the left end of the piston block 73, a return spring 75 wound around the side wall of the piston rod 74, and two ends of the return spring 75 are fixedly connected to the piston block 73 and the inner wall of the piston cylinder 72 respectively;

[0046] A cooling pipe 76 is fixedly installed on the upper end surface of the clamping seat 67, and the cooling pipe 76 is connected with the piston rod 74 through the clamping seat 67. An air outlet 741 is opened on the side wall of the piston rod 74, and the inner cavity of the air outlet 741 is provided with a one-way air valve with the outlet toward the clamping seat 67. An air inlet 731 is opened on the side wall of the piston block 73, and the inner cavity of the air inlet 731 is provided with a one-way air valve with the outlet toward the left cavity of the piston cylinder 72. The inflation column 71 is connected with the piston cylinder 72, and the inflation column 71 is connected with the outside air.

[0047] It should be noted that when all the clamping seats 67 are close to the middle of the workbench 3, since the piston rod 74 is fixedly connected to the clamping seat 67, the clamping seat 67 can pull the piston rod 74 to move the piston block 73 to the left side of the inner cavity of the piston cylinder 72, so that the return spring 75 is compressed. At the same time, the volume of the left cavity of the piston cylinder 72 also decreases, and the internal air pressure will be significantly increased. Finally, it can enter the inner cavity of the piston rod 74 through the air outlet 741 on the side wall of the piston rod 74, and then be ejected from the cooling pipe 76 through the clamping seat 67, so that low-temperature and strong cold wind blows on the mold plate 5 after the exhaust pipe is cast, so as to accelerate its cooling and facilitate the workers to quickly demold the exhaust pipe in the mold plate 5 later.

[0048] Working principle:

[0049] During work, after the worker places the mold plate 5 on the cooling table 31, the limit motor 65 can be started to rotate the transmission worm 66. Since the transmission worm 66 is meshed and connected with the transmission worm wheel 64, the transmission worm 66 will drive the transmission worm wheel 64 to rotate the bidirectional threaded rod 62. The threads on the left and right sides of the bidirectional threaded rod 62 are in opposite directions, and the moving seat 63 is threadedly connected with the bidirectional threaded rod 62. When the bidirectional threaded rod 62 rotates, under the limiting action of the oblique columns 33 on both sides on the moving seat 63, the moving seats 63 on the left and right sides will be simultaneously approached or moved away, and the oblique columns 33 slide in the inner cavity of the transverse groove 631 on the moving seat 63, so that the oblique columns 33 slide in the oblique groove 32. At this time, the clamping seats 67 located around the upper end surface of the workbench 3 can approach each other to achieve fixed clamping of the mold plate 5, reducing the possibility of tilting and sliding of the mold plate 5 during transportation, greatly improving the workers' transportation efficiency of the mold plate 5 and improving the safety index of the workers' working scene;

[0050] When all the clamping seats 67 are close to the middle of the workbench 3, since the piston rod 74 is fixedly connected to the clamping seat 67, the clamping seat 67 can pull the piston rod 74 to move the piston block 73 to the left side of the inner cavity of the piston cylinder 72, so that the return spring 75 is compressed. At the same time, the volume of the left cavity of the piston cylinder 72 also decreases, and the internal air pressure will be significantly increased. Finally, it can enter the inner cavity of the piston rod 74 through the air outlet 741 on the side wall of the piston rod 74, and then be ejected from the cooling pipe 76 through the clamping seat 67, so that low-temperature and strong cold wind blows on the mold plate 5 after the exhaust pipe is cast, so as to accelerate its cooling and facilitate the workers to quickly demold the exhaust pipe in the mold plate 5 later;

[0051] After the worker transports the mold plate 5 to the designated position, the clamping seat 67 diffuses outward to release the restraint on the mold plate 5. At this time, the piston rod 74 will drive the piston block 73 to move toward the right side of the inner cavity of the piston cylinder 72. As the volume of the inner cavity on the left side of the piston cylinder 72 continues to increase, the internal air pressure will be significantly reduced. At this time, the standard atmospheric pressure of the outside world is significantly greater than the air pressure in the left cavity of the piston cylinder 72, that is, the outside air will enter the right cavity of the piston cylinder 72 through the inflation column 71, and then be stored in the left cavity of the piston block 73 through the air inlet 731 on the piston block 73, so as to be used for cooling the clamped mold plate 5 next time;

[0052] Before transporting the mold plate 5, the transmission rod 41 can be rotated by starting the lifting motor 46. Since the driving bevel gears 42 on the left and right sides are arranged in a mirror-symmetrical manner, the driving bevel gear 42 is meshed and connected with the reversing bevel gear 44, and are respectively located on both sides of the reversing bevel gear 44. At this time, the driving bevel gear 42 will drive the reversing bevel gear 44 to make the lifting screws 43 on the left and right sides rotate in the same direction. The lifting seat 45 is threadedly connected with the lifting screw 43, and the slide rail seat 22 is fixedly installed on the side wall of the workbench 3. Under the limiting constraint of the slide rail 21 on the slide rail seat 22, the lifting seat 45 will move up and down on the side wall of the lifting screw 43, causing the height of the workbench 3 to change. At this time, the entire device can be adapted and adjusted accordingly according to the height of the external work table surface, so as to realize the transportation of the mold plate to the mold plate placement plate at different heights, which greatly improves the versatility and adaptability of the entire device.

[0053] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0054] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A mold moving device for exhaust pipe casting, comprising a body frame (1), self-locking universal wheels (11) are fixedly installed around the lower end surface of the body frame (1), bracket plates (2) are fixedly installed on the left and right sides of the upper end surface of the body frame (1), and a workbench (3) is slidably installed between the bracket plates (2) on the left and right sides, characterized in that: Also includes: A lifting mechanism (4), the lifting mechanism (4) being arranged in the inner cavity of the vehicle body frame (1), and the lifting mechanism (4) being used to change the height of the workbench (3); A mold plate (5), a cooling platform (31) is fixedly mounted in the middle of the upper end surface of the workbench (3), and the mold plate (5) is placed on the upper end surface of the cooling platform (31); A limiting mechanism (6), wherein the limiting mechanism (6) is arranged on the inner side wall of the workbench (3), and the limiting mechanism (6) is used to clamp the mold plate (5); A cooling mechanism (7) is arranged on the upper end surface of the workbench (3), and the cooling mechanism (7) is used to perform air cooling and heat dissipation on the mold plate (5).

2. The exhaust pipe casting mold moving device according to claim 1, characterized in that: The lifting mechanism (4) comprises a transmission rod (41) rotatably mounted on the left and right sides of the inner cavity of the vehicle body frame (1), and a driving bevel gear (42) fixedly mounted on the left and right sides of the side wall of the transmission rod (41); a lifting screw (43) is rotatably mounted on the inner side wall of the bracket plate (2); a reversing bevel gear (44) is fixedly mounted on the lower end surface of the lifting screw (43); and a lifting seat (45) is threadedly mounted on the middle part of the side wall of the lifting screw (43).

3. The exhaust pipe casting mold moving device according to claim 2, characterized in that: A lifting motor (46) is fixedly installed in the middle of the inner cavity of the vehicle frame (1) through a frame. The lifting motor (46) is a double-shaft motor. The two output shaft ends of the lifting motor (46) are respectively fixedly connected to the transmission rod (41). The driving bevel gear (42) is meshedly connected to the reversing bevel gear (44). The lifting screw (43) is connected to the vehicle frame (1) through the lifting seat (45) and is fixedly connected to the workbench (3).

4. The exhaust pipe casting mold moving device according to claim 2, characterized in that: Slide rails (21) are fixedly installed on the front and rear sides of the inner walls of the left and right sides of the bracket plates (2); a slide rail seat (22) is slidably installed in the inner cavity of the slide rail (21); the slide rail seat (22) is fixedly installed on the side wall of the workbench (3); the front and rear end surfaces of the vehicle body frame (1) are both provided with ventilation grooves; and the driving bevel gears (42) located on the left and right sides are arranged in a mirror-symmetrical manner.

5. The exhaust pipe casting mold moving device according to claim 1, characterized in that: The limiting mechanism (6) comprises supporting plates (61) fixedly mounted on the left and right sides of the inner wall of the workbench (3); the inner cavities of the supporting plates (61) on the left and right sides are rotatably mounted with bidirectional screws (62); the side walls of the bidirectional screw (62) are both threadedly mounted with moving seats (63); a transmission worm gear (64) is fixedly mounted in the middle of the side wall of the bidirectional screw (62); a limiting motor (65) is also fixedly mounted on one side of the inner wall of the workbench (3) close to the supporting plate (61) through a frame; a transmission worm gear (66) is fixedly mounted on the output shaft end of the limiting motor (65); the transmission worm gear (66) is meshingly connected with the transmission worm gear (64); and the left and right ends of the bidirectional screw (62) have opposite thread directions.

6. The exhaust pipe casting mold moving device according to claim 5, characterized in that: The upper end surface of the workbench (3) is provided with an oblique groove (32) around it, the inner cavity of the oblique groove (32) is slidably mounted with an oblique column (33), the upper end surface of the oblique column (33) is fixedly mounted with a clamping seat (67), the upper end surface of the movable seat (63) is provided with a transverse groove (631), and the lower end of the oblique column (33) slides in the inner cavity of the transverse groove (631).

7. The exhaust pipe casting mold moving device according to claim 6, characterized in that: The cooling mechanism (7) comprises an inflatable column (71) fixedly mounted around the upper end surface of the workbench (3); a piston cylinder (72) is fixedly mounted on the side wall of the inflatable column (71); a piston block (73) is slidably mounted in the inner cavity of the piston cylinder (72); a piston rod (74) is fixedly mounted on the left end of the piston block (73); a return spring (75) is wound around the side wall of the piston rod (74); and the two ends of the return spring (75) are fixedly connected to the piston block (73) and the inner wall of the piston cylinder (72), respectively.

8. The exhaust pipe casting mold moving device according to claim 7, characterized in that: A cooling pipe (76) is fixedly mounted on the upper end surface of the clamping seat (67), and the cooling pipe (76) is connected to the piston rod (74) through the clamping seat (67). An air outlet (741) is provided on the side wall of the piston rod (74), and a one-way air valve with an outlet in the direction of the clamping seat (67) is provided in the inner cavity of the air outlet (741). An air inlet (731) is provided on the side wall of the piston block (73), and a one-way air valve with an outlet in the left cavity of the piston cylinder (72) is provided in the inner cavity of the air inlet (731). The inflation column (71) is connected to the piston cylinder (72), and the inflation column (71) is connected to the outside air.

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