A casting sand mold conveying line and a conveying method

Abstract

The application provides a casting sand mold conveying line and a conveying method. The conveying line seat is internally provided with a first conveying line and a second conveying line in parallel. The first conveying line and the second conveying line are provided with a transfer device at the end. The first conveying line is provided with a first buffer guide group on the side close to the transfer device. The bottom of the first buffer guide group is rotationally connected between the side close to the transfer device and the conveying line seat. The bottom of the first buffer guide group is provided with a sinking device on the side away from the transfer device. The application can slow down the inertia speed of the end of the casting sand mold, reduce the impact of the end transfer structure, and ensure the quality of the internal product.

Description

Technical Field

[0001] This invention relates to the field of casting sand mold production technology, and in particular to a casting sand mold conveying line and conveying method. Background Technology

[0002] Large components such as connecting plates, axles, and wheelsets required for rail transit need to be manufactured by casting using sand molds. During the casting process using sand molds, the components need to go through processes such as mold opening, grinding, casting, and demolding on the conveyor line.

[0003] In the foundry workshop, parallel conveyor lines and transfer devices at both ends of the conveyor lines enable sand molds to circulate and change direction between the conveyor lines. The large volume and mass of the sand molds require a large initial thrust to start them quickly, shortening the transit time of the sand molds and improving the efficiency of sand mold production and transportation. However, in the later stages of the sand mold movement, due to the high speed of the sand molds, the sand molds will cause a large impact on the end-limiting buffer structure, affecting the service life of the transfer equipment and the quality of the products inside the sand molds. Summary of the Invention

[0004] To address the aforementioned problems, this invention provides a casting sand mold conveying line and conveying method. This invention can reduce the inertial speed of the casting sand mold's end movement, thereby reducing the impact on the end transfer structure and ensuring the quality of the internal products.

[0005] To solve the above problems, the technical solution adopted by the present invention is as follows:

[0006] A casting sand mold conveying line includes a conveying line base, inside which a first conveying line and a second conveying line are arranged side by side. A transfer device is provided at the end of the first conveying line and the second conveying line. A first buffer guide group is provided on the side of the first conveying line near the transfer device. The bottom of the first buffer guide group is rotatably connected to the conveying line base on the side near the transfer device. A sinking device is provided on the bottom of the first buffer guide group away from the transfer device. After the casting sand mold has completely moved to the first buffer guide group, the sinking device controls the tilt of the first buffer guide group to slow down the inertial speed of the casting sand mold.

[0007] Preferably, the sinking device includes a guide slide rail, a guide slide block is slidably connected to the upper end of the guide slide rail, an installation positioning block is fixedly connected to the lower end of the first buffer guide group, the installation positioning block is connected to the guide slide block through a sinking rod, and a telescopic component is provided on the outside of the guide slide block for controlling the linear movement of the guide slide block.

[0008] Preferably, the guide slide is located between the mounting positioning block and the transfer device, the telescopic component is located on the side away from the transfer device, and the guide slide is provided with an elastic component on the opposite side of the telescopic component.

[0009] Preferably, the transfer device includes a set of bearing bodies and two sets of traction devices located outside the bearing bodies. The two sets of traction devices are respectively located outside the first bearing body. The bottom of the bearing body is provided with guide rails and guide wheelsets.

[0010] Preferably, the upper end of the transfer device is provided with a second buffer guide group, the second buffer guide group is rotatably connected to the transfer device on the side near the conveyor line seat, and a lifting device is provided on the side of the second buffer guide group away from the conveyor line seat.

[0011] Preferably, the lifting device is located outside the second buffer guide group, and the second buffer guide group is deflected by a predetermined angle by the lifting device. The lifting device includes a lifting positioning rod and a lifting auxiliary rod, and a predetermined angle is formed between the lifting positioning rod and the lifting auxiliary rod. An auxiliary slider is slidably connected to the upper end of the transfer device, and the auxiliary slider is rotatably connected to the end of the lifting auxiliary rod. A position control device is provided at the upper end of the transfer device to control the linear movement of the auxiliary slider.

[0012] Preferably, the positioning control device includes a positioning control screw and a guide rod. The positioning control screw passes through the auxiliary slider and is threadedly connected to it. An electrical control device is installed at the upper end of the transfer device to control the rotation of the positioning control screw.

[0013] Preferably, a positioning device is provided on the side of the second buffer guide group near the conveyor line seat. The positioning device includes a laser positioning plate. A laser emitting device is provided on the side of the first conveyor line near the second buffer guide group. A protective cover is rotatably provided on the outside of the laser positioning plate. A rotating component is fixedly provided at the bottom of the second buffer guide group to control the rotation of the protective cover.

[0014] Preferably, a protective chamber is formed between the protective cover and the second buffer guide group, the rotating assembly is a pneumatic rotating element, and the side wall of the rotating assembly is provided with an air outlet pipe facing the protective chamber.

[0015] A method for conveying foundry sand molds includes the following steps:

[0016] S1. Control the support chassis on the surface of the first conveyor line, which supports the casting sand mold, to move toward the direction of the transfer device. After the support chassis has moved completely to the surface of the first buffer guide group, control the first buffer guide group to tilt toward the first direction.

[0017] S2. After the supporting chassis is completely moved to the surface of the transfer device, the supporting chassis is moved to one side of the second conveyor line by the transfer device to complete the reversing conveying of the supporting chassis.

[0018] The beneficial effects of this invention are as follows:

[0019] By setting a first buffer guide group at the end of the first conveyor line, the inertial speed of the casting sand mold moving to the end can be reduced. While ensuring the initial moving speed of the casting sand mold and shortening the moving time, the impact of the casting sand mold on the end transfer device structure is reduced, ensuring the service life of the structure and the quality of the product. At the same time, by setting the second buffer guide group to deflect through the lifting device, the tilt angle of the second buffer guide group can be controlled, so that the deflection angle of the second buffer guide group is consistent with that of the first buffer guide group, ensuring the smooth sliding of the casting sand mold between the two. Attached Figure Description

[0020] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0021] Figure 2 For the present invention Figure 1 A top-view structural diagram;

[0022] Figure 3 For the present invention Figure 2 A schematic diagram of the AA-direction section structure;

[0023] Figure 4 For the present invention Figure 3 A magnified structural diagram at point B;

[0024] Figure 5 This is a three-dimensional structural diagram of the supporting body and the second buffer guide group of the present invention;

[0025] Figure 6 For the present invention Figure 5 A top-view structural diagram;

[0026] Figure 7 For the present invention Figure 5 Front view structural diagram;

[0027] Figure 8 For the present invention Figure 5 A schematic diagram of the side view structure;

[0028] Figure 9 This is an enlarged structural diagram at point C of the present invention;

[0029] Figure 10 This is an enlarged structural diagram of point D in the present invention.

[0030] In the diagram: 100, First conveyor line; 200, Second conveyor line; 300, Transfer device; 310, Bearing body; 320, Traction device; 400, Second buffer guide group; 410, Second bearing guide rail; 411, Second bearing rotating shaft; 500, First buffer guide group; 510, First bearing guide rail; 520, Sinking device; 521, Mounting positioning block; 522, Sinking rod; 523, Telescopic component; 524, Guide slide; 525, Guide slide rail; 526, Elastic component; 530, First bearing rotating shaft; 600, Lifting device; 610, Lifting positioning rod; 620, Lifting auxiliary rod; 630, Position control device; 700, Support chassis; 800, Positioning device; 810, Laser positioning plate; 820, Protective cover plate; 830, Rotating component; 831, Air outlet pipe. Detailed Implementation

[0031] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0032] See attached document Figure 1 - Appendix Figure 10 A casting sand mold conveying line includes a conveyor base, inside which a first conveyor line 100 and a second conveyor line 200 are arranged in parallel. A transfer device 300 is provided at the end of the first conveyor line 100 and the second conveyor line 200. The casting sand mold can be transferred between the first conveyor line 100 and the second conveyor line 200 to change the direction of movement of the casting sand mold. The first conveyor line 100 and the second conveyor line 200 are arranged in parallel, and the casting sand mold can form a material circulation between the first conveyor line 100 and the second conveyor line 200.

[0033] The casting sand mold is placed on the surface of the supporting chassis 700 for conveying. Its overall mass is large and its inertia is large during the conveying process. In order to improve the overall conveying efficiency, the initial speed of the casting sand mold is increased to shorten its movement time. However, in the later stage of movement, due to the large overall speed, it will cause a large impact on the end limiting structure, affecting the quality of the transfer device 300 and the products inside the sand mold.

[0034] To address the aforementioned issues, a first buffer guide group 500 is provided on the side of the first conveyor line 100 near the transfer device 300. The first buffer guide group 500 has a horizontal conveying state and an inclined slowing state. The first buffer guide group 500 can switch between the two states. The first buffer guide group 500 switches at an appropriate time, changing from the conveying state to the inclined slowing state, thereby reducing the movement rate of the casting sand mold end and reducing the impact on the surface limiting structure of the transfer device 300.

[0035] The bottom of the first buffer guide group 500 is rotatably connected to the conveyor line seat on the side near the transfer device 300. Specifically, the two are rotatably connected through the first bearing shaft 530. A sinking device 520 is provided on the bottom of the first buffer guide group 500 away from the transfer device 300. After the casting sand mold has completely moved to the first buffer guide group 500, the sinking device 520 controls the tilt of the first buffer guide group 500 to slow down the inertial speed of the casting sand mold. After the sinking device 520 sinks a predetermined distance, the first buffer guide group 500 forms an acute angle with the ground. At this time, the gravity of the casting sand mold can generate a component force behind its movement, which can slow down the casting sand mold as a whole. In combination with the friction force, the overall movement speed is gradually reduced, thus achieving slowing down.

[0036] The first buffer guide group 500 is equipped with a first bearing guide rail 510 at its upper end, which can reduce the resistance to the sliding of the chassis 700. The first buffer guide group 500 moves downward and tilts. The overall structure of the casting sand mold is simple to control. When the center of gravity of the first buffer guide group 500 does not exceed the position of the first bearing shaft 530, the first buffer guide group 500 can use the first bearing shaft 530 as a fulcrum. At this time, the control force required for the sinking device 520 to descend is small. When the middle position of the casting sand mold moves to the upper end of the first bearing shaft 530, the casting sand mold is supported by the first bearing shaft 530. The two sides can be in a balanced state. Adjustments are made before the casting sand mold moves to this position. The overall structure is simple to control, the structure is subjected to less impact, and the structure has a long service life.

[0037] As a preferred sinking method, the sinking device 520 includes a guide slide rail 525, with a guide slide block 524 slidably connected to the upper end of the guide slide rail 525. A mounting positioning block 521 is fixedly connected to the lower end of the first buffer guide group 500. The mounting positioning block 521 and the guide slide block 524 are connected by a sinking rod 522. A telescopic component 523 is provided on the outside of the guide slide block 524 to control the linear movement of the guide slide block 524. The first end of the sinking rod 522 is rotatably connected to the mounting positioning block 521. At this time, the telescopic component 523 can be arranged horizontally, and the vertical height of one side of the mounting positioning block 521 can be adjusted by controlling the horizontal position of the guide slide block 524. The telescopic component 523 can be selected as a hydraulic telescopic device, which can stably control and adjust the position of the guide slide block 524.

[0038] By using the aforementioned sinking method, the force of the first bearing guide rail 510 sinking can be decomposed, reducing the difficulty of the telescopic component 523 controlling the guide slide 524 in the horizontal direction; reducing the load requirement of the telescopic component 523 and improving the stability of control; at the same time, the entire device can be arranged horizontally, reducing the volume occupied by the overall structure of the sinking device 520, facilitating the installation and maintenance of the bottom structure, with minimal changes to the overall structure and a reasonable layout.

[0039] To further improve the telescopic control effect of the telescopic component 523 and ensure the stability of the first bearing guide rail 510 in the horizontal direction, the guide slide 524 is set between the mounting positioning block 521 and the transfer device 300. The sinking rod 522 is deflected towards the transfer device 300 and is inclined. At the same time, the telescopic component 523 is located on the side away from the transfer device 300. The guide slide 524 is located on the opposite side of the telescopic component 523 and is provided with an elastic component 526. The elastic component 526 is a combination of a spring and a guide block. Both are sleeved on the outside of the guide slide rail 525, which can buffer the guide slide 524, reduce the impact on the whole structure, and ensure the stability of the whole structure.

[0040] Please refer to the appendix for details. Figure 2 The transfer device 300 here includes a load-bearing body 310 and two sets of traction devices 320 located outside the load-bearing body 310. The two sets of traction devices 320 are respectively located outside the first load-bearing body 310. The bottom of the load-bearing body 310 is provided with guide rails and guide wheels. The traction devices 320 on both sides can pull the load-bearing body 310 located in the middle, allowing the load-bearing body 310 to move linearly along the guide rails below, controlling the transfer and reversal of the casting sand mold between the first conveyor line 100 and the second conveyor line 200, realizing the production and transportation of the casting sand mold. The traction device 320 can be a combination of a winding roller and a winding cable to pull the casting sand mold from two directions. Similarly, it can also be a combination of a traction chain and a traction sprocket to realize the position control of the casting sand mold.

[0041] To ensure smooth movement of the casting sand mold on the surface of the transfer device 300, a track with the same inclination angle as the first buffer guide group 500 should be set on the surface of the transfer device 300 to relay the casting sand mold; at the same time, a locking structure should be installed at the bottom of the transfer device 300 to ensure the stability of the casting sand mold on the inclined surface of the transfer device 300.

[0042] To further ensure the stability of the casting sand mold during the transfer process, a second buffer guide group 400 is installed at the upper end of the transfer device 300. This second buffer guide group 400 also has both horizontal and inclined orientations. During the movement of the casting sand mold, the second buffer guide group 400 is controlled to be in an inclined orientation, allowing the casting sand mold to move stably and preventing jamming that could impact the product. Simultaneously, during the transfer process of the transfer device 300, the second buffer guide group 400 is controlled to be in a horizontal orientation. At this time, the center of gravity of the casting sand mold is stable, and the locking structure at the edges will not be affected. To prevent impact and ensure the stability of the casting sand mold during horizontal transfer, the second buffer guide group 400 is rotatably connected to the transfer device 300 on the side near the conveyor line seat. Specifically, the second buffer guide group 400 and the transfer device 300 are rotatably connected through the second bearing shaft 411. A lifting device 600 is provided on the side of the second buffer guide group 400 away from the conveyor line seat. The lifting device 600 can control the tilt angle of the second buffer guide group 400, allowing the second buffer guide group 400 to switch between horizontal and tilted postures to ensure the stability of the overall structure.

[0043] Please refer to the appendix for details. Figure 5 - Appendix Figure 10 Preferably, the lifting device 600 is located outside the second buffer guide group 400. The lifting device 600 controls the deflection of the second buffer guide group 400 by a predetermined angle. Being located outside, the lifting device 600 utilizes leverage to assist in controlling the overall deflection of the second buffer guide group 400. The lifting device 600 includes a lifting positioning rod 610 and a lifting auxiliary rod 620, forming a predetermined angle between them. An auxiliary slider is slidably connected to the upper end of the transfer device 300, and the auxiliary slider is rotatably connected to the end of the lifting auxiliary rod 620. A position control device 630 is provided at the end to control the linear movement of the auxiliary slider. The lifting positioning rod 610 and the lifting auxiliary rod 620 can change the overall control direction to control the overall structure and facilitate the installation of the overall structure. The lifting positioning rod 610 can act as a lever from the outside to reduce the load on the overall structure. At the same time, the lifting auxiliary rod 620 can change the direction of force control, so that the position control device 630 can control the horizontal movement of the auxiliary slider, and at the same time, control the rotation of the lifting positioning rod 610 and the lifting auxiliary rod 620 to ensure the stability of the overall structure control.

[0044] It should be noted that the length of the lifting positioning rod 610 is greater than that of the lifting auxiliary rod 620, and the two form an obtuse angle of less than 180° at the lower position. During the movement of the lifting auxiliary rod 620 controlled by the auxiliary slider, the lifting auxiliary rod 620 deflects counterclockwise, while the lifting positioning rod 610 deflects clockwise. The lifting positioning rod 610 is fixedly set with the second buffer guide group 400. During the movement of the auxiliary slider, the deflection control of the second buffer guide group 400 can be realized. The overall structure is stable and can distribute the load. At the same time, a locking component can be set between the auxiliary slider and the transfer device 300 to lock the position of the auxiliary slider from the bottom. This ensures that the second buffer guide group 400 remains relatively stable during the sliding of the casting sand mold on the surface of the second buffer guide group 400, and ensures that the docking angle between the second buffer guide group 400 and the first buffer guide group 500 is consistent, ensuring that the casting sand mold can slide smoothly between the two.

[0045] The second buffer guide group 400 here has two symmetrically arranged second bearing guide rails 410 installed at its upper end, which can reduce the sliding friction between the second bearing guide rail and the casting sand mold and reduce resistance. The end of the second bearing guide rail 410 away from the first conveyor line 100 is arc-shaped, which can buffer and decelerate the moving casting sand mold. It can cooperate with the inclined second bearing guide rail 410 to reduce the inertial speed of the casting sand mold, ensure the stability of the casting sand mold movement, and reduce the impact on the transfer equipment.

[0046] As a preferred positioning method, the positioning device 630 here includes a positioning screw and a guide rod. The positioning screw passes through the auxiliary slider and is threadedly connected to it. An electrical control device is installed on the upper end of the transfer device 300 to control the rotation of the positioning screw. The positioning screw is arranged horizontally. During the rotation of the positioning screw, it can control the linear movement of the auxiliary slider. The angle is precisely controlled during the rotation of the positioning screw, ensuring the accuracy of the deflection angle of the second buffer guide group 400 on one side. At the same time, the positioning screw that has stopped rotating can lock with the auxiliary slider to ensure the stability of the overall structure of the second buffer guide group 400 in the tilted state.

[0047] Please refer to the appendix for details. Figure 5 Appendix Figure 7 and appendix Figure 9A positioning device 800 is provided on the side of the second buffer guide group 400 near the conveyor line seat. The positioning device 800 can locate the horizontal movement position and tilt angle of the second buffer guide group 400, ensuring the stability of the overall structure. The positioning device 800 includes a laser positioning plate 810. A laser emitting device is provided on the side of the first conveyor line 100 near the second buffer guide group 400. The laser emitting device emits a positioning laser towards the laser positioning plate 810. After the second buffer guide group 400 moves horizontally to the predetermined position, it is captured by the positioning device 800. During the deflection process, the position of the positioning laser end projection changes. When the positioning laser end projection position shifts to the predetermined position, the laser positioning plate 810 receives a signal. At this time, the lifting device 600 is controlled to stop lifting, and the overall structure is in a stable tilted state. After the casting sand mold has completely moved to the surface of the second buffer guide group 400, the lifting device 600 controls the second buffer guide group 400 to deflect in the opposite direction, controlling the second buffer guide group 400 to be in a horizontal state. At this time, the casting sand mold is in a stable posture, ensuring the stability of the casting sand mold during horizontal movement and transfer.

[0048] The working environment in the casting sand mold workshop is harsh and generally poor, with dust affecting the effectiveness of laser positioning. Regular cleaning of the laser positioning structure is necessary. To address this issue, a protective cover plate 820 is rotatably mounted on the outside of the laser positioning plate 810. A rotating assembly 830 is fixedly mounted at the bottom of the second buffer guide group 400 to control the rotation of the protective cover plate 820. During positioning, the rotating assembly 830 controls the rotation of the protective cover plate 820, offsetting it from the laser positioning plate 810 to allow the laser to pass through for positioning. After laser positioning is completed, the protective cover plate 820 is deflected onto the surface of the laser positioning plate 810. At this point, the protective cover plate 820 protects the laser positioning plate 810, preventing dust and sand from damaging its surface, reducing the frequency of cleaning, and extending the equipment's service life.

[0049] To further ensure the cleanliness of the laser positioning plate 810, a protective chamber is formed between the protective cover plate 820 and the second buffer guide group 400. The rotating component 830 is a pneumatic rotating element, and its side wall is provided with an air outlet pipe 831 facing the protective chamber. The rotating component 830 is connected to an external pneumatic device, which controls the deflection of the protective cover plate 820 through air pressure. At the same time, the residual air at the end can be discharged through the air outlet pipe 831 and enter the protective chamber to form a high-pressure chamber, preventing external dust from entering the internal protective chamber and ensuring the cleanliness of the surface of the laser positioning plate 810. The structure of the rotating component 830 can be selected from the existing pneumatic rotating element structure, which will not be described in detail here. The rotating component 830 is externally controlled by a switch containing a position sensing module. When the second buffer guide group 400 is about to move to the side of the first conveyor line 100, the sensing module works. After the entire structure moves to the predetermined position, the control switch is turned on, and the rotating component 830 is rotated. At the same time, a high-pressure protection is formed in the protective chamber. The entire action is automatic, reducing the control difficulty.

[0050] A method for conveying foundry sand molds includes the following steps:

[0051] S1. Control the support base 700 supporting the casting sand mold on the surface of the first conveyor line 100 to move towards the transfer device 300. After the support base 700 has completely moved to the surface of the first buffer guide group 500, control the first buffer guide group 500 to tilt in the first direction. The tilted first buffer guide group 500 can slow down the moving casting sand mold, reduce the inertia of the rear end of the casting sand mold, and reduce the impact of the casting sand mold on the transfer device 300.

[0052] At the same time, the second buffer guide group 400 is tilted towards the first conveyor line 100 by the lifting device 600. The tilted second buffer guide group 400 can be in a straight line with the tilted first buffer guide group 500, ensuring the stability of the casting sand mold sliding transition between the two.

[0053] The positioning device 800 can automatically control the horizontal movement position and tilt angle of the second buffer guide group 400, reducing the difficulty of overall deflection control and improving the efficiency of casting sand mold transfer and conveying.

[0054] S2. After the supporting chassis 700 is completely moved to the surface of the transfer device 300, the transfer device 300 controls the supporting chassis 700 to move to one side of the second conveyor line 200, completing the reversing conveying of the supporting chassis.

[0055] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A casting sand mold conveying line, comprising a conveying line base, wherein a first conveying line (100) and a second conveying line (200) are arranged side by side inside the conveying line base, and a transfer device (300) is provided at the end of the first conveying line (100) and the second conveying line (200), characterized in that: The first conveyor line (100) is provided with a first buffer guide group (500) on the side near the transfer device (300). The bottom of the first buffer guide group (500) is rotatably connected to the conveyor line seat on the side near the transfer device (300). The bottom of the first buffer guide group (500) is provided with a sinking device (520) on the side away from the transfer device (300). After the casting sand mold has completely moved to the first buffer guide group (500), the sinking device (520) controls the first buffer guide group (500) to tilt in order to slow down the inertial speed of the casting sand mold. The sinking device (520) includes a guide slide rail (525), a guide slide block (524) is slidably connected to the upper end of the guide slide rail (525), an installation positioning block (521) is fixedly connected to the lower end of the first buffer guide group (500), the installation positioning block (521) and the guide slide block (524) are connected by a sinking rod (522), and a telescopic component (523) is provided on the outside of the guide slide block (524) for controlling the linear movement of the guide slide block (524); The guide slide (524) is located between the mounting positioning block (521) and the transfer device (300), the telescopic component (523) is located on the side away from the transfer device (300), and the guide slide (524) is provided with an elastic component (526) on the opposite side of the telescopic component (523).

2. The casting sand mold conveyor line according to claim 1, characterized in that, The transfer device (300) includes a set of bearing bodies (310) and two sets of traction devices (320) located outside the bearing bodies (310). The two sets of traction devices (320) are respectively located outside the first bearing body (310). The bottom of the bearing body (310) is provided with guide rails and guide wheelsets.

3. A casting sand mold conveyor line according to claim 1, characterized in that, The upper end of the transfer device (300) is provided with a second buffer guide group (400), the second buffer guide group (400) is rotatably connected to the transfer device (300) on the side near the conveyor seat, and a lifting device (600) is provided on the side of the second buffer guide group (400) away from the conveyor seat.

4. A casting sand mold conveyor line according to claim 3, characterized in that, The lifting device (600) is located outside the second buffer guide group (400). The lifting device (600) controls the second buffer guide group (400) to deflect by a predetermined angle. The lifting device (600) includes a lifting positioning rod (610) and a lifting auxiliary rod (620). A predetermined angle is formed between the lifting positioning rod (610) and the lifting auxiliary rod (620). An auxiliary slider is slidably connected to the upper end of the transfer device (300). The auxiliary slider is rotatably connected to the end of the lifting auxiliary rod (620). A position control device (630) is provided at the upper end of the transfer device (300) to control the linear movement of the auxiliary slider.

5. A casting sand mold conveyor line according to claim 4, characterized in that, The positioning control device (630) includes a positioning control screw and a guide rod. The positioning control screw passes through the auxiliary slider and is threadedly connected to it. An electrical control device is installed on the upper end of the transfer device (300) to control the rotation of the positioning control screw.

6. A casting sand mold conveyor line according to claim 3, characterized in that, The second buffer guide group (400) is provided with a positioning device (800) on the side near the conveyor seat. The positioning device (800) includes a laser positioning plate (810). The first conveyor line (100) is provided with a laser emitting device on the side near the second buffer guide group (400). A protective cover plate (820) is rotatably provided on the outside of the laser positioning plate (810). A rotating component (830) is fixedly provided at the bottom of the second buffer guide group (400) to control the rotation of the protective cover plate (820).

7. A casting sand mold conveyor line according to claim 6, characterized in that, A protective chamber is formed between the protective cover plate (820) and the second buffer guide group (400). The rotating component (830) is a pneumatic rotating element, and the side wall of the rotating component (830) is provided with an air outlet pipe (831) facing the protective chamber.

8. A method for conveying casting sand molds, characterized in that, Using the casting sand mold conveyor line according to any one of claims 1-7 includes the following steps: S1. Control the support chassis (700) on the surface of the first conveyor line (100) to move toward the transfer device (300). After the support chassis (700) has completely moved to the surface of the first buffer guide group (500), control the first buffer guide group (500) to tilt toward the first direction. S2. After the supporting chassis (700) is completely moved to the surface of the transfer device (300), the supporting chassis (700) is moved to the side of the second conveyor line (200) by the transfer device (300) to complete the reversing conveying of the supporting chassis (700).

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