A conveying roller and a metal mold coated sand casting production line

Abstract

The application discloses a conveying roller bed, which comprises a roller bed support, a track device arranged on the roller bed support to convey an iron mold, a roller device comprising a plurality of supporting rollers for bearing the iron mold, each supporting roller being arranged on the track device along an extension direction of the track device and being rotatable about an axis thereof, and a driving device connected with the roller device and used to drive each supporting roller to rotate. Compared with the prior art, the conveying roller bed provided by the application is active conveying, the driving device drives the supporting rollers to rotate as the conveying power for conveying the iron mold, thereby avoiding strong collision and clamping members, effectively protecting the supporting rollers and the iron mold, and eliminating the need for the iron molds to abut against each other during conveying, further avoiding collision and abrasion between the iron molds. Therefore, the conveying roller bed provided by the application accelerates the production rhythm and significantly improves the efficiency of the iron mold casting production line. The application further discloses a metal mold coated sand casting production line.

Description

Technical Field

[0001] This invention relates to the field of casting technology, and more particularly to a conveyor roller conveyor and a metal mold sand-coated casting production line. Background Technology

[0002] Casting is a production method in which molten metal is poured into a mold that resembles the shape of the part, and the casting is obtained after the molten metal cools and solidifies. For mass casting production, a mold casting production line is required to meet production demands. In existing mold casting production lines, the mold is placed on a roller conveyor with rollers, and then a drive unit (hydraulic cylinder or pneumatic cylinder) pushes the mold on the rollers, causing the mold to move on the roller conveyor to achieve mold transport.

[0003] However, this conveying method relies on pushing the iron mold as the transmission power. During the process of the iron mold being pushed by the roller conveyor, it will collide violently with the stationary rollers in front of it, which can easily cause damage to the rollers and the iron mold. In some cases, the iron mold may even get stuck between adjacent rollers, thus affecting the production cycle and reducing production efficiency. Furthermore, multiple iron molds arranged on the roller conveyor need to abut against each other so that the iron mold pushed closer to the drive unit can move the iron mold in front. This not only further increases the risk of iron mold damage, but also further aggravates the problems of slow production cycle and low efficiency.

[0004] Therefore, how to improve the efficiency of iron mold casting production lines is a technical problem that needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a conveyor roller conveyor to improve the efficiency of a cast iron mold production line;

[0006] Another object of the present invention is to provide a metal mold sand casting production line having the above-mentioned conveyor rollers.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A conveyor roller conveyor, comprising:

[0009] Roller conveyor support;

[0010] Two track devices are provided, and the track devices are installed on the roller support to transport the iron mold;

[0011] The roller device includes a plurality of support rollers for carrying iron molds, each of the support rollers being arranged at intervals on the track device along the extension direction of the track device, and each of the support rollers being rotatable about its own axis.

[0012] A drive device, connected to the roller device, is used to drive each of the support rollers to rotate.

[0013] Optionally, in the above-mentioned conveyor roller conveyor, the roller device includes a first transmission unit, which is connected to each of the support rollers so that each of the support rollers rotates synchronously.

[0014] Optionally, in the above-mentioned conveyor roller conveyor, the first transmission unit includes a first sprocket set and a first chain for chain drive, each of the support rollers is provided with the first sprocket set, and each of the first sprocket sets is connected to each other through the first chain.

[0015] Optionally, in the above-mentioned conveyor roller conveyor, one of the support rollers on any one of the track devices is an active support roller, and the other support rollers are driven support rollers, and the first sprocket group includes a first sprocket and a second sprocket;

[0016] The first sprocket on any one of the driven support rollers is connected to the first sprocket on the driven support roller on its first side via a first chain drive, and the second sprocket on the driven support roller is connected to the second sprocket on the driven support roller on its second side via another first chain drive;

[0017] The first sprocket of the active support roller is connected to the drive device via a second transmission part, and the second sprocket of the active support roller is connected to the second sprocket on an adjacent driven support roller via another first chain.

[0018] Optionally, in the above-mentioned conveyor roller conveyor, the second transmission unit (410) includes a drive sprocket (411), a second sprocket assembly, and a second chain;

[0019] The drive sprocket is mounted on the drive device;

[0020] The second sprocket assembly includes two output sprockets and one input sprocket. The input sprocket is connected to the drive sprocket via a second chain. The two output sprockets are respectively connected to the two drive wheels of the track device via the second chain.

[0021] The conveyor rollers provided by the present invention have a track device for conveying iron molds installed on the roller support, and the support rollers of the track device are in contact with the iron molds for support. The support rollers are driven to rotate by a drive device, thereby pushing the iron molds to move along the extension direction of the track device.

[0022] Compared with existing technologies, the conveyor roller conveyor provided by this invention is an active conveyor system, with each support roller rotating autonomously as the power source for transporting the iron mold. Therefore, during the iron mold transport process, the moving iron mold and the rotating support rollers avoid strong collisions and jamming, effectively protecting both the support rollers and the iron mold. Furthermore, the iron molds do not need to come into contact with each other during transport, further preventing collisions and wear. Thus, the conveyor roller conveyor provided by this invention accelerates the production cycle and significantly improves the efficiency of the iron mold casting production line.

[0023] A metal mold sand casting production line includes: a conveyor roller conveyor for conveying an iron mold, the conveyor roller conveyor being used to convey the iron mold to a casting process system to complete the casting of a casting, the conveyor roller conveyor being as described in any of the preceding claims.

[0024] Optionally, in the above-mentioned metal mold sand casting production line, the casting mold process system includes: a temperature control system, a core shooter, a first double-station box-turning machine, a first single-station box-turning machine, a box-closing machine, a pressing and pouring unit, a part-removing machine, a box-opening machine, a second single-station box-turning machine, a vibrating sand-removing machine, and a second double-station box-turning machine arranged sequentially along the iron mold conveying direction.

[0025] Optionally, in the above-mentioned metal mold sand casting production line, the pressing and pouring unit includes a pressing machine and a pouring machine. Multiple pressing machines are provided, and each pressing machine is arranged at intervals along the iron mold conveying direction, and each pressing machine is connected through the conveying roller conveyor.

[0026] The casting machine moves along the direction in which the iron mold is conveyed by each of the pressing machines to pour molten metal into the iron mold on the pressing machine.

[0027] Optionally, in the above-mentioned metal mold sand casting production line, iron mold storage units for storing the iron mold are arranged at both ends of the pressing and pouring unit, and the iron mold storage unit includes the conveying rollers connected in parallel along the iron mold conveying direction;

[0028] Each of the iron mold storage units has a transfer unit at both ends, which is used to transport the iron mold to each of the iron mold storage units.

[0029] Optionally, in the above-mentioned metal mold sand casting production line, the second double-station mold turning machine is connected to the temperature control system through the conveyor roller conveyor, so that the iron mold conveyed by the second double-station mold turning machine enters the temperature control system, so that the iron mold re-enters the sand casting production process.

[0030] The metal mold sand casting production line provided by this invention, due to having the aforementioned conveyor roller conveyor, possesses all the technical effects of the aforementioned conveyor roller conveyor, which will not be elaborated upon here. Attached Figure Description

[0031] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0032] Figure 1 This is a schematic diagram of the conveyor roller conveyor disclosed in an embodiment of the present invention;

[0033] Figure 2 This is a left-side schematic diagram of the conveyor roller conveyor disclosed in an embodiment of the present invention;

[0034] Figure 3 This is a schematic diagram of the structure of the metal mold sand-coated casting production line disclosed in an embodiment of the present invention;

[0035] Figure 4 This is another structural schematic diagram of the metal mold sand-coated casting production line disclosed in an embodiment of the present invention;

[0036] Figure 5 This is another structural schematic diagram of the metal mold sand-coated casting production line disclosed in the embodiments of the present invention.

[0037] Among them, 100 represents the support frame;

[0038] 200 is a track device;

[0039] 300 is a roller device, 310 is a support roller, 320 is a first transmission part; 321 is a first sprocket group, 322 is a first chain;

[0040] 400 is the drive unit; 410 is the second transmission unit; 411 is the drive sprocket; 412 is the second chain; 420 is the second sprocket assembly; 421 is the input sprocket; and 422 is the output sprocket.

[0041] 501 is the temperature control system, 502 is the core shooter, 503 is the first double-station box-turning machine, 504 is the first single-station box-turning machine, 505 is the box-closing machine, 506 is the component picker, 507 is the box-opening machine, 508 is the second single-station box-turning machine, 509 is the vibrating sand removal machine, 510 is the second double-station box-turning machine, 511 is the pressing machine, and 512 is the casting machine.

[0042] 600 is a storage unit for iron molds;

[0043] 700 is the shuttle device, and 710 is the shuttle trolley;

[0044] 800 is a push cylinder;

[0045] 900 is a buffer cylinder. Detailed Implementation

[0046] The core of this invention is to provide a conveyor roller conveyor to improve the efficiency of iron mold casting production line;

[0047] Another core aspect of this invention is to provide a metal mold sand casting production line having the aforementioned conveyor rollers.

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0049] like Figure 1 and Figure 2 As shown, an embodiment of the present invention discloses a conveyor roller, including a roller support 100, a track device 200, a roller device 300, and a drive device 400.

[0050] Two track devices 200 are mounted on the roller support 100, with a space between them for placing the iron mold and conveying it. Each support roller 310 of the roller device 300 is fixed to one of the track devices 200 and fits against the iron mold placed on the track device 200 to support it. The support rollers 310 are spaced apart along the extension direction of the track device 200, and each support roller 310 on the track device 200 can rotate along its own axis. A drive device 400 is connected to the roller device 300 to drive each support roller 310 to rotate, allowing the iron mold on the support roller 310 to move on the track device 200, thus conveying the iron mold.

[0051] In one specific embodiment, the roller device 300 includes a first transmission part 320, which is connected to each support roller 310, so that each support roller 310 rotates synchronously during the iron mold conveying process, thereby ensuring the uniformity of the iron mold movement, improving the stability and safety of the iron mold conveying, and avoiding collision damage caused by relative movement between the iron mold and each support roller 310.

[0052] like Figure 1As shown, the first transmission unit 320 includes a first sprocket set 321 and a first chain 322. The number of first sprocket sets 321 is the same as the number of support rollers 310, so that the first sprocket sets 321 and support rollers 310 are installed in a one-to-one correspondence. Each first sprocket set 321 is interconnected via the first chain 322, thereby achieving synchronous rotation of each support roller 310. It is understandable that, for ease of maintenance of the first sprocket sets 321 and the first chain 322, both are arranged on the outside of the track device 200.

[0053] In one specific embodiment, one of the multiple support rollers 310 on any track device 200 is designated as an active support roller, while the others are passive support rollers. Furthermore, each support roller 310's first sprocket assembly 321 includes a first sprocket and a second sprocket. The first sprocket on any passive support roller is connected to the first sprocket on its first side via a first chain 322, and the second sprocket on any passive support roller is connected to the second sprocket on its second side via another first chain 322, thus achieving transmission connections between the passive support rollers. The first sprockets of the two active support rollers are connected to the drive device 400 via a second transmission part 410, and the second sprockets of each active support roller are connected to the second sprocket on an adjacent passive support roller via another first chain 322. Therefore, the drive device 400 drives the rotation of each support roller 310 on the track device 200.

[0054] Furthermore, the first transmission unit 320 adopts a chain drive method in which the first sprocket set 321 and the first chain 322 cooperate, thus having advantages such as no elastic slippage or slippage, accurate average transmission ratio, large power transmission, high reliability, and adaptability to harsh environments. Alternatively, those skilled in the art can design other transmission methods according to actual needs, which will not be listed here.

[0055] like Figure 1 and Figure 2As shown, the second transmission unit 410 also employs chain drive. The second transmission unit 410 includes a drive sprocket 411, a second sprocket assembly 420, and a second chain 412. The drive sprocket 411 is mounted on the drive device 400. The second sprocket assembly 420 includes two output sprockets 422 and one input sprocket 421, with the two output sprockets 422 and the input sprocket 421 mounted on the same shaft. The input sprocket 421 is connected to the drive sprocket 411 via the second chain 412, and the two output sprockets 422 are respectively connected to the drive wheels of the two track devices 200 via the second chain 412, thereby further improving the smoothness, reliability, and power performance of the transmission. In a specific embodiment, the drive device 400 is a servo motor.

[0056] In another specific example, the conveyor rollers provided in this embodiment are also equipped with a detection device and a control unit. The detection device sends information such as whether an iron mold is placed on the track device 200 and the position of the iron mold during the conveying process of the track device 200 to the control unit. The control unit then controls the operation of the drive device 400 based on the relevant feedback information to adjust the conveying state of the iron mold.

[0057] This invention also discloses a metal mold sand-coated casting production line with the aforementioned conveyor rollers, thereby conveying the iron mold to the casting process system during the casting production process, completing the conveying of the iron mold. Since this metal mold sand-coated casting production line has the aforementioned conveyor rollers, it possesses all the technical effects of the aforementioned conveyor rollers, which will not be elaborated upon further here.

[0058] In one specific embodiment, the casting process system includes: a temperature control system 501, a core shooter 502, a first double-station box-turning machine 503, a first single-station box-turning machine 504, a box-closing machine 505, a pressing and pouring unit, a part-removing machine 506, a box-opening machine 507, a second single-station box-turning machine 508, a vibrating sand-removing machine 509, and a second double-station box-turning machine 510 arranged sequentially along the conveying direction of the iron mold.

[0059] like Figure 3 As shown, the temperature control system 501 is equipped with a mold temperature detection device and a temperature control device. The mold temperature detection device detects the temperature of the iron mold, and based on the difference between the detection result and the preset temperature, the temperature control device heats or cools the iron mold to meet the requirements of the core shooter 502 for sand coating of the iron mold. In a specific embodiment, the temperature control system 501 is provided with multiple sets to meet the requirements of a high production cycle.

[0060] After the iron mold is heated, the upper and lower boxes of the iron mold enter the core shooter 502, thus completing the sand coating process on the upper and lower boxes of the iron mold. Furthermore, the metal mold sand casting production line provided in this embodiment is equipped with multiple core shooters 502 to meet the sand coating requirements of iron molds of different specifications. To transport iron molds of different specifications to the corresponding core shooters 502, a transfer conveyor is also provided, which transports the iron molds of various specifications from the conveyor rollers to the corresponding core shooters 502. In one specific embodiment, the metal mold sand casting production line provided in this embodiment is equipped with three types of core shooters 502, and two sets of transfer conveyors are provided for transporting iron molds to the three types of core shooters 502. This improves the applicability of the metal mold sand casting production line provided in this embodiment, enabling the simultaneous completion of casting work for different specifications of castings.

[0061] After the sand covering is completed, the upper and lower iron mold boxes enter the first double-station flipping machine 503. The first double-station flipping machine 503 simultaneously rotates the upper and lower iron mold boxes 180° to prepare for the closure of the upper and lower iron mold boxes, and at the same time checks whether the sand mold condition of the upper and lower iron mold boxes is good.

[0062] After confirming that the sand mold is in good condition, the upper and lower iron mold boxes are conveyed by the conveyor rollers to the first single-station flipping machine 504. The first single-station flipping machine 504 flips the upper iron mold box 180° and then enters the closing machine 505. The robotic arm of the closing machine 505 lifts the upper iron mold box, and the lower iron mold box continues to be conveyed to the corresponding position. Then the conveyor rollers stop conveying, and the robotic arm closes the upper and lower iron mold boxes together to complete the mold closing.

[0063] After the mold is closed, the iron mold is conveyed to the pressing and pouring unit to press and pour molten metal into the iron mold. After the molten metal in the iron mold cools and solidifies, the iron mold with the casting is conveyed to the box opener 507 via the part picker 506 and the transport stops. Then the robotic arm of the box opener 507 lifts the upper box of the iron mold, separating the upper box of the iron mold from the lower box of the iron mold. The casting is located in the lower box of the iron mold. Then the lower box of the iron mold with the casting is returned to the part picker 506. The robotic arm of the part picker 506 takes out the casting and places it in the material frame. The lower box of the iron mold returns to the conveyor roller and is arranged sequentially upstream of the upper box of the iron mold along the conveying direction.

[0064] Subsequently, the upper and lower mold boxes sequentially enter the second single-station mold flipping machine 508. The second single-station mold flipping machine 508 rotates the lower mold box 180° to prepare for cleaning the waste sand inside the mold. After the upper and lower mold boxes enter the vibratory sand removal machine 509, the vibratory sand removal machine 509 cleans the waste sand. To meet the needs of cleaning waste sand from molds of different sizes, various models of vibratory sand removal machines 509 are arranged. After the vibratory sand removal machine 509 cleans the mold, because the mold is large and complex in shape with many angles, the upper and lower mold boxes are transported to the second double-station mold flipping machine 510 to clean the waste sand in the angles. This allows workers to flip the upper and lower mold boxes for cleaning, preparing for the next casting process. In this way, the casting production of the part is completed.

[0065] like Figure 3 As shown, the clamping and pouring unit includes a clamping machine 511 and a pouring machine 512. Multiple clamping machines 511 are used to clamp the iron mold after it has been closed. Each clamping machine 511 is arranged sequentially at intervals along the iron mold conveying direction. Simultaneously, each clamping machine 511 is connected to the others via conveyor rollers. The pouring machine 512, used to pour molten metal into the iron mold, is arranged in parallel with each clamping machine 511, and the pouring machine 512 can move along the iron mold conveying direction of the clamping machines 511, thereby pouring molten metal into the iron molds on each clamping machine 511. This significantly improves the production efficiency of the metal mold sand casting production line provided in this embodiment.

[0066] like Figure 4 As shown, to improve the speed and continuity of production, iron mold storage units 600 are arranged at both ends of the clamping and pouring unit. The iron mold storage units 600 are used for temporary storage of iron molds, thus providing ample time for the clamping and pouring unit to clamp and pour the iron molds, as well as for the cooling and forming of the castings, without affecting subsequent processes, resulting in a compact and continuous overall production cycle. The iron mold storage unit 600 consists of multiple sets of parallel conveyor rollers, each set independent and unaffected by others. Furthermore, the multiple sets of parallel conveyor rollers can also store iron molds of different specifications. Iron molds in the same set of conveyor rollers have the same specifications, while iron molds in different sets have different specifications, thereby meeting the needs of the metal mold sand casting production line provided in this embodiment for casting castings of different specifications.

[0067] In one specific embodiment, a transfer device 700 is arranged at both ends of the iron mold storage unit 600. The transfer device 700 includes a conveyor roller conveyor and a transfer trolley 710 that moves on the conveyor roller conveyor. The transfer trolley 710 is provided with a space for accommodating the iron mold, and the transfer trolley 710 is also provided with a locking structure to prevent the iron mold from slipping off the transfer trolley 710. Thus, when it is necessary to input an iron mold into the iron mold storage unit 600, or to output an iron mold from the iron mold storage unit 600, the transfer trolley 710 can be moved to the corresponding position to carry and transport the iron mold. In addition, in order to quickly unload the iron mold on the transfer trolley 710, a push cylinder 800 for pushing the iron mold is installed at the unloading position of the transfer trolley 710. In one specific embodiment, the push cylinder 800 is a hydraulic cylinder, or other pushing mechanisms can be designed by those skilled in the art according to the actual situation.

[0068] To ensure that different models of vibratory sandblasting machines 509 and core shooters 502 can process corresponding models of iron molds simultaneously, thereby improving production cycle time and continuity, after the iron molds of different specifications are pressed and poured in the pressing and pouring unit, the iron molds of different specifications are transported by the transfer trolley 710 to the corresponding set of conveyor rollers. When the transfer trolley 710 at the other end of the iron mold storage unit 600 takes out the iron molds, the swing trolley 710 takes out the iron molds of different specifications alternately and places them on the conveyor rollers, so that the iron molds of different specifications are transported alternately to the corresponding models of vibratory sandblasting machines 509 and core shooters 502.

[0069] like Figure 4 As shown, after the iron mold is poured into the pressing and casting unit, the overall mass of the iron mold filled with molten metal increases, resulting in a large inertia during the transportation process. In order to avoid the iron mold causing a large impact on the shuttle trolley 710 when it is transported to the shuttle trolley 710, a buffer cylinder 900 is arranged in the direction of movement of the iron mold toward the shuttle trolley 710. The buffer cylinder 900 abuts against the iron mold to dissipate most of the inertia of the iron mold and reduce the impact force on the shuttle trolley 710.

[0070] like Figure 5 As shown, after the iron mold is cleaned by the second double-station turning machine 510, the cleaned iron mold is transported to the temperature control system 501 by the conveyor roller, so that the iron mold can re-enter the sand casting production process, thereby realizing the cyclic casting production of the iron mold in the metal mold sand casting production line provided in this embodiment.

[0071] It should be noted that the various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0072] As indicated in this application and claims, unless the context clearly indicates otherwise, the words "a," "an," "a," and / or "the" are not specifically singular and may include the plural. Generally, the terms "comprising" and "including" only indicate the inclusion of expressly identified steps and elements, which do not constitute an exclusive list, and the method or apparatus may also include other steps or elements. An element defined by the phrase "comprising an..." does not exclude the presence of other identical elements in the process, method, product, or apparatus that includes the element.

[0073] In the description of the embodiments of this application, unless otherwise stated, " / " means "or", for example, A / B can mean A or B; "and / or" in this document is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, and B existing alone. Furthermore, in the description of the embodiments of this application, "multiple" refers to two or more.

[0074] Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature.

[0075] This article uses specific examples to illustrate the principles and implementation methods of the present invention. The descriptions of the above embodiments are only for the purpose of helping to understand the core ideas of the present invention. It should be noted that those skilled in the art can make several improvements and modifications to the present invention without departing from the principles of the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A metal mold sand-coated casting production line, characterized in that, include: A conveyor roller conveyor for transporting iron molds to a casting process system to complete the casting of castings; The conveyor roller conveyor includes: Roller support (100); Two track devices (200) are provided, and the track devices (200) are mounted on the roller support (100) to transport iron molds; The roller device (300) includes a plurality of support rollers (310) for carrying the iron mold. Each of the support rollers (310) is arranged at intervals on the track device (200) along the extension direction of the track device (200), and each of the support rollers (310) can rotate about its own axis. A drive device (400) is connected to the roller device (300) and is used to drive each of the support rollers (310) to rotate; The roller device (300) includes a first transmission part (320), which is connected to each of the support rollers (310) so that each of the support rollers (310) rotates synchronously; The casting process system includes, in sequence along the iron mold conveying direction, a temperature control system (501), a core shooter (502), a first double-station box-turning machine (503), a first single-station box-turning machine (504), a box-closing machine (505), a pressing and pouring unit, a part-removing machine (506), a box-opening machine (507), a second single-station box-turning machine (508), a vibrating sand-removing machine (509), and a second double-station box-turning machine (510). The pressing and casting unit includes a pressing machine (511) and a casting machine (512). Multiple pressing machines (511) are provided, and each pressing machine (511) is arranged at intervals along the iron mold conveying direction, and each pressing machine (511) is connected through the conveying roller conveyor. The casting machine (512) moves along the iron mold conveying direction of each pressing machine (511) to pour molten metal into the iron mold on the pressing machine (511). The pressing and casting unit has iron mold storage units (600) arranged at both ends for storing the iron molds. The iron mold storage unit (600) includes the conveying rollers connected in parallel along the iron mold conveying direction. The iron mold storage unit (600) is composed of multiple sets of parallel conveying rollers. Each set of conveying rollers is independent and does not affect each other. The multiple sets of parallel conveying rollers store iron molds of different specifications. The iron molds in the same set of conveying rollers have the same specifications, while the iron molds in different sets have different specifications. Each iron mold storage unit (600) has a transfer unit (700) arranged at both ends for conveying the iron molds to each iron mold storage unit (600).

2. The metal mold sand-coated casting production line according to claim 1, characterized in that, The first transmission unit (320) includes a first sprocket set (321) and a first chain (322) for chain drive. Each of the support rollers (310) is provided with the first sprocket set (321), and each of the first sprocket sets (321) is connected to each other through the first chain (322).

3. The metal mold sand-coated casting production line according to claim 1, characterized in that, One of the support rollers (310) on any of the track devices (200) is an active support roller, and the other support rollers (310) are driven support rollers, and the first sprocket group (321) includes a first sprocket and a second sprocket; The first sprocket on any one of the driven support rollers is connected to the first sprocket on the driven support roller on its first side via a first chain (322), and the second sprocket on the driven support roller is connected to the second sprocket on the driven support roller on its second side via another first chain (322). The first sprocket of the active support roller is connected to the drive device (400) via the second transmission part (410), and the second sprocket of the active support roller is connected to the second sprocket on an adjacent driven support roller via another first chain (322).

4. The metal mold sand-coated casting production line according to claim 3, characterized in that, The second transmission unit (410) includes a drive sprocket (411), a second sprocket set (420), and a second chain (412). The drive sprocket (411) is mounted on the drive device (400); The second sprocket assembly (420) includes two output sprockets (422) and one input sprocket (421). The input sprocket (421) is connected to the drive sprocket (411) via a second chain (412). The two output sprockets (422) are respectively connected to the drive wheels of the two track devices (200) via the second chain (412).

5. The metal mold sand-coated casting production line according to claim 1, characterized in that, The second double-station turning machine (510) is connected to the temperature control system (501) through the conveyor roller, so that the iron mold conveyed by the second double-station turning machine (510) enters the temperature control system (501) and the iron mold re-enters the sand casting production process.

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