CN219238199U - Conveying roller way and metal mold sand-coated casting production line - Google Patents

Abstract

The utility model discloses a conveying roller way, which comprises the following components: a roller way bracket; the track device is arranged on the roller way bracket to convey the iron mold; the roller device comprises a plurality of supporting rollers for bearing the iron mold, wherein each supporting roller is arranged on the rail device at intervals along the extending direction of the rail device and can rotate around the axis of the supporting roller; and the driving device is connected with the roller device and is used for driving the supporting rollers to rotate. Compared with the prior art, the conveying roller way provided by the utility model is used for actively conveying, the driving device drives the supporting roller to rotate, so that the conveying roller way is used as conveying power for conveying iron molds, strong collision and clamping pieces are avoided, the supporting roller and the iron molds are effectively protected, the iron molds are not required to be mutually abutted in the conveying process, and collision and abrasion between the iron molds are further avoided. Therefore, the conveying roller way provided by the utility model accelerates the production beat and improves the efficiency of the iron mold casting production line. The utility model also discloses a metal mold sand-lined casting production line.

Description

Conveying roller way and metal mold sand-coated casting production line

Technical Field

The utility model relates to the technical field of casting, in particular to a conveying roller way and a metal mold sand-lined casting production line.

Background

Casting is a production mode of pouring molten metal into a casting mold similar to the shape of a part, and obtaining a casting after the molten metal is cooled and solidified. For mass casting production, an iron mold casting production line is required to meet the production requirements. In the existing iron mold casting production line, an iron mold is placed on a roller way with rollers, and then the iron mold on the rollers is pushed by a driving unit (an oil cylinder or an air cylinder) so that the iron mold moves on the roller way to realize the conveying of the iron mold.

However, in the conveying mode, the iron mold is pushed to serve as transmission power, the iron mold can be in strong collision with the stationary roller in front of the moving direction in the roller way pushing process, the roller and the iron mold are easy to damage, even the iron mold is clamped between the adjacent rollers, and therefore production beats are influenced, and production efficiency is reduced. And a plurality of iron molds arranged on the roller way need to be mutually abutted to push the iron mold close to the driving unit, so that the iron mold in front can be moved, thereby further causing the risk of iron mold damage and further aggravating the problems of slow production beat and low efficiency.

Therefore, how to improve the efficiency of the iron mold casting production line is a technical problem that needs to be solved by the person skilled in the art at present.

Disclosure of Invention

Therefore, the utility model aims to provide a conveying roller way so as to improve the efficiency of an iron mold casting production line;

the utility model further aims to provide a metal mold sand-lined casting production line with the conveying roller way.

In order to achieve the above object, the present utility model provides the following technical solutions:

a rollgang comprising:

a roller way bracket;

the rail devices are arranged in two and are arranged on the roller way bracket to convey the iron mold;

the roller device comprises a plurality of supporting rollers for bearing the iron mold, wherein each supporting roller is arranged on the track device at intervals along the extending direction of the track device, and each supporting roller can rotate around the axis of the supporting roller;

and the driving device is connected with the roller device and is used for driving the supporting rollers to rotate.

Optionally, in the conveying roller way, the roller device includes a first transmission portion, and the first transmission portion is connected with each supporting roller so that each supporting roller rotates synchronously.

Optionally, in the above conveying roller way, the first transmission portion includes a first sprocket set and a first chain for chain transmission, each supporting roller is provided with the first sprocket set, and each first sprocket set is connected through the first chain transmission.

Optionally, in the conveying roller way, one of the supporting rollers on any one of the track devices is a driving supporting roller, the other supporting rollers are driven supporting rollers, and the first sprocket group comprises a first sprocket and a second sprocket;

the first sprocket on any one of the driven support rollers is in transmission connection with the first sprocket on the driven support roller on the first side of the driven support roller through one first chain, and the second sprocket on the driven support roller is in transmission connection with the second sprocket on the driven support roller on the second side of the driven support roller through the other first chain;

the first sprocket of the driving support roller is in transmission connection with the driving device through a second transmission part, and the second sprocket of the driving support roller is in transmission connection with the second sprocket on the adjacent driven support roller through another first chain.

Optionally, in the conveying roller way, the second transmission part (410) comprises a driving sprocket (411), a second sprocket group and a second chain;

the driving chain wheel is arranged on the driving device;

the second chain wheel group comprises two output chain wheels and an input chain wheel, the input chain wheel is in transmission connection with the driving chain wheels through a second chain, and the two output chain wheels are in one-to-one transmission connection with the driving wheels of the track device through the second chain.

The conveying roller way provided by the utility model is characterized in that the rail device for conveying the iron mold is arranged on the roller way bracket, the supporting rollers of the rail device are attached to the iron mold for supporting, and the driving device drives the supporting rollers to rotate so as to push the iron mold to move along the extending direction of the rail device.

Compared with the prior art, the conveying roller way provided by the utility model is used for actively conveying, and each supporting roller rotates independently to serve as transmission power for conveying iron molds, so that strong collision and clamping phenomena of the advancing iron molds and the rotating supporting rollers are avoided in the process of conveying the iron molds, the supporting rollers and the iron molds are effectively protected, the iron molds do not need to be mutually abutted in the conveying process, and collision and abrasion between the iron molds are further avoided. Therefore, the conveying roller way provided by the utility model accelerates the production beat and obviously improves the efficiency of the iron mold casting production line.

A metal mold sand lined casting line comprising: a transfer table for transferring iron molds for transferring the iron molds to a casting mold process system to complete casting of a casting, the transfer table being as set forth in any one of the above.

Optionally, in the metal mold sand lined casting production line, the casting mold process system includes: and a temperature regulating system, a core shooting machine, a first double-station box turning machine, a first single-station box turning machine, a box closing machine, a compacting pouring unit, a piece taking machine, a box opening machine, a second single-station box turning machine, a vibration shakeout machine and a second double-station box turning machine are sequentially arranged along the conveying direction of the iron mold.

Optionally, in the metal mold sand-lined casting production line, the compaction casting unit includes a plurality of compaction machines and casting machines, each compaction machine is arranged at intervals along the iron mold conveying direction, and each compaction machine is connected through the conveying roller way;

the casting machine moves along the direction of conveying the iron molds by the pressing machines so as to pour metal liquid into the iron molds on the pressing machines.

Optionally, in the metal mold sand-lined casting production line, iron mold storage units for storing the iron molds are arranged at two ends of the compaction casting unit, and the iron mold storage units comprise the conveying roller tables which are mutually connected in parallel along the iron mold conveying direction;

and ferrying units are arranged at two ends of each iron mold storage unit and are used for conveying the iron molds for each iron mold storage unit.

Optionally, in the metal mold sand-lined casting production line, the second double-station box turner is connected with the temperature regulating system through the conveying roller way, so that the iron mold conveyed out by the second double-station box turner enters the temperature regulating system, and the iron mold enters the sand-lined casting production flow again.

The metal mold sand-lined casting production line provided by the utility model has all the technical effects of the conveying roller way due to the conveying roller way, and is not repeated herein

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of a conveying roller table disclosed in an embodiment of the utility model;

fig. 2 is a schematic left view of a roller conveyor disclosed in an embodiment of the present utility model;

FIG. 3 is a schematic diagram of a metal mold sand-lined casting line according to an embodiment of the present utility model;

FIG. 4 is a schematic view of another construction of a sand lined metal mold casting line according to an embodiment of the present utility model;

fig. 5 is a schematic view of another structure of a sand lined metal mold casting line according to an embodiment of the present utility model.

Wherein 100 is a bracket;

200 is a track device;

300 is a roller device, 310 is a supporting roller, 320 is a first transmission part; 321, a first sprocket set 322 is a first chain;

400 is a driving device; 410 is a second transmission part, 411 is a driving sprocket, 412 is a second chain, 420 is a second sprocket set, 421 is an input sprocket, and 422 is an output sprocket;

501 is a temperature regulating system, 502 is a core shooting machine, 503 is a first double-station box turning machine, 504 is a first single-station box turning machine, 505 is a box closing machine, 506 is a piece taking machine, 507 is a box opening machine, 508 is a second single-station box turning machine, 509 is a vibration shakeout machine, 510 is a second double-station box turning machine, 511 is a compacting machine, and 512 is a casting machine;

600 is an iron mold storage unit;

700 is a ferry device, 710 is a ferry trolley;

800 is a push cylinder;

900 is a buffer cylinder.

Detailed Description

The core of the utility model is to provide a conveying roller way to improve the efficiency of an iron mold casting production line;

the utility model further provides a metal mold sand-lined casting production line with the conveying roller way.

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

As shown in fig. 1 and 2, an embodiment of the present utility model discloses a rollgang, which includes a roller bracket 100, a rail device 200, a roller device 300, and a driving device 400.

Wherein, two rail devices 200 are installed on the roller way bracket 100, and a space for placing iron molds is arranged between the two rail devices 200 to convey the iron molds. Each supporting roller 310 of the roller device 300 is fixed to each rail device 200 to be attached to the iron mold placed on the rail device 200 to support the iron mold. The respective support rollers 310 are spaced apart along the extending direction of the rail device 200, and the support rollers 310 on the rail device 200 are rotatable along their own axes. The driving device 400 is connected with the roller device 300 to drive each supporting roller 310 to rotate, so that the iron mold on the supporting roller 310 can move on the track device 200 to realize the conveying of the iron mold.

In a specific embodiment, the roller device 300 includes a first transmission portion 320, where the first transmission portion 320 is connected to each supporting roller 310, so that in the process of conveying the iron mold, each supporting roller 310 rotates synchronously, thereby ensuring uniformity of movement of the iron mold, improving stability and safety of conveying the iron mold, and avoiding collision damage caused by relative movement between the iron mold and each supporting roller 310.

As shown in fig. 1, the first transmission part 320 includes a first sprocket set 321 and a first chain 322, and the number of the first sprocket sets 321 is the same as that of the supporting rollers 310, so that the first sprocket sets 321 are installed in one-to-one correspondence with the supporting rollers 310. And the first sprocket groups 321 are connected to each other through the first chain 322, thereby achieving synchronous rotation of the support rollers 310. It will be understood, of course, that the first sprocket set 321 and the first chain 322 are disposed on the outer side of the track device 200 for facilitating maintenance of the first sprocket set 321 and the first chain 322.

In one embodiment, one of the plurality of support rollers 310 on any one track device 200 is configured as a driving support roller, while the other support rollers 310 are driven support rollers. Also, the first sprocket group 321 of each support roller 310 includes a first sprocket and a second sprocket. And the first sprocket on any one driven support roller is in transmission connection with the first sprocket on the driven support roller on the first side of the driven support roller through a first chain 322, and the second sprocket on the driven support roller is in transmission connection with the second sprocket on the driven support roller on the second side of the driven support roller through another first chain 322, so that the transmission connection between the driven support rollers is realized. The first sprocket of the two driving support rollers is in transmission connection with the driving device 400 through the second transmission part 410, and the second sprocket of each driving support roller is in transmission connection with the second sprocket on the adjacent driven support roller through the other first chain 322. Thus, the driving device 400 is realized to drive the rotation of the respective support rollers 310 on the rail device 200.

In addition, the first transmission part 320 adopts a chain transmission mode in which the first chain wheel group 321 and the first chain 322 are matched, so that the device has the advantages of no elastic sliding and slipping phenomenon, accurate average transmission ratio, high transmission power, high reliability, adaptation to severe environments and the like. Or those skilled in the art may design other transmission modes according to actual requirements, and are not listed herein.

As shown in fig. 1 and 2, the second transmission portion 410 also employs a chain transmission. The second transmission part 410 includes a driving sprocket 411, a second sprocket group 420, and a second chain 412. Wherein the driving sprocket 411 is mounted on the driving device 400. The second sprocket set 420 includes two output sprockets 422 and an input sprocket 421, the two output sprockets 422 and the input sprocket 421 are mounted on the same shaft, the input sprocket 421 is in transmission connection with the driving sprocket 411 through a second chain 412, and the two output sprockets 422 are in transmission connection with the driving wheels of the two track devices 200 through the second chain 412 in one-to-one correspondence, so that the stability, reliability and power performance of the transmission are further improved. In a specific embodiment, the driving device 400 is a servo motor.

In another specific example, the conveying roller way provided by the embodiment is further provided with a detection device and a control unit. The detection device sends information such as whether the iron mold is placed on the track device 200, and determining the position of the iron mold in the conveying process of the track device 200 to the control unit, so that the control unit controls the operation of the driving device 400 according to the information fed back by the control unit to adjust the conveying state of the iron mold.

The utility model also discloses a metal mold sand-lined casting production line with the conveying roller way, so that in the casting production process of castings, the iron molds are conveyed to a casting mold process system to finish conveying the iron molds. The metal mold sand-lined casting production line has the conveying roller way, so that the metal mold sand-lined casting production line has all the technical effects of the conveying roller way, and is not repeated herein.

In one embodiment, a molding process system includes: a temperature regulating system 501, a core shooter 502, a first double-station box turner 503, a first single-station box turner 504, a box closing machine 505, a compaction casting unit, a piece taking machine 506, a box opening machine 507, a second single-station box turner 508, a vibration shakeout machine 509 and a second double-station box turner 510 are sequentially arranged along the conveying direction of the iron mold.

As shown in fig. 3, the temperature control system 501 is provided with a mold temperature detecting device and a temperature control device, the mold temperature detecting device detects the temperature of the iron mold, and according to the difference between the detection result and the preset temperature, the iron mold is heated or cooled by the temperature control device, so as to meet the requirement of the core shooter 502 on sand coating of the iron mold. In a specific embodiment, the temperature regulating system 501 is provided with multiple groups to meet the higher tact requirement.

After the iron mold is subjected to temperature adjustment, the upper box and the lower box of the iron mold enter the core shooter 502, so that sand coating of the upper box and the lower box of the iron mold is completed. In addition, the metal mold sand-lined casting production line provided by the embodiment is provided with a plurality of core shooters 502 so as to meet the sand-lined requirements of iron molds with different specifications. And in order to convey the iron molds with different specifications to the core shooter 502 with corresponding models, a ferry conveying part is further arranged, and the ferry conveying part conveys the iron molds with different models of the conveying roller ways to the core shooter 502 with corresponding models. In a specific embodiment, the metal mold sand lined casting production line provided in this embodiment is provided with three core shooters 502, and two sets of ferrying conveying parts for conveying iron molds to the three core shooters 502 are provided. Therefore, the applicability of the metal mold sand-lined casting production line provided by the embodiment is improved, and casting work of castings with different specifications can be synchronously completed.

The iron mold upper box and the iron mold lower box after sand coating enter the first double-station box turning machine 503, and the first double-station box turning machine 503 turns over the iron mold upper box and the iron mold lower box 180 degrees simultaneously so as to prepare the mold closing of the iron mold upper box and the iron mold lower box and check whether the sand mold conditions of the iron mold upper box and the iron mold lower box are good.

After confirming that the sand mold is good, conveying the upper iron mold box and the lower iron mold box to a first single-station box overturning machine 504 by a conveying roller way, overturning the upper iron mold box by 180 degrees by the first single-station box overturning machine 504, then entering a box closing machine 505, lifting the upper iron mold box by a mechanical arm of the box closing machine 505, stopping conveying the lower iron mold box by the conveying roller way after the lower iron mold box is continuously conveyed to a corresponding position, and closing the upper iron mold box and the lower iron mold box by the mechanical arm to complete die closing.

The die after die assembly is continuously conveyed to a compression pouring unit, molten metal is compressed and poured into the die, after the molten metal in the die is cooled and molded, the die with the casting is conveyed to a box opening machine 507 through a die taking machine 506 and is stopped in transportation, a mechanical arm of the box opening machine 507 lifts the die upper box, the die upper box is separated from the die lower box, the casting is positioned in the die lower box, the die lower box with the casting is returned to the die taking machine 506 again, the mechanical arm of the die taking machine 506 takes the casting out and places the casting in a material frame, the die lower box returns to a conveying roller way again, and the die lower box is sequentially arranged at the upstream of the die upper box along the conveying direction.

The upper iron mould box and the lower iron mould box sequentially enter a second single-station box overturning machine 508, the second single-station box overturning machine 508 overturns the lower iron mould box for 180 degrees to prepare for cleaning the waste sand in the iron mould, after the upper iron mould box and the lower iron mould box enter a vibration shakeout machine 509, the vibration shakeout machine 509 cleans the waste sand, and in order to meet the requirements of cleaning the waste sand of iron moulds of different specifications, a plurality of types of vibration shakeout machines 509 are arranged. After the shakeout machine 509 cleans the iron mold, because the iron mold has larger size, complex shape and more included angle positions, in order to clean the waste sand in the included angle, the iron mold upper box and the iron mold lower box are conveyed to the second double-station box turnover machine 510, so that the worker can clean the iron mold upper box and the iron mold lower box by turnover, and the preparation is made for the next casting process. Thus, the casting production of the casting is completed.

As shown in fig. 3, the compaction casting unit includes a compactor 511 and a casting machine 512, and the compactor 511 is used for compacting the clamped iron mold and is provided with a plurality of compacting machines. The respective presses 511 are sequentially spaced apart in the iron mold conveying direction. Meanwhile, the respective pressing machines 511 are connected through a conveying roller table. And a casting machine 512 for casting molten metal into the iron mold is arranged in parallel with each of the presses 511, and the casting machine 512 is movable in a direction in which the presses 511 convey the iron mold, thereby casting molten metal into the iron mold on each of the presses 511. Thereby obviously improving the production efficiency of the metal mold sand-lined casting production line.

As shown in fig. 4, in order to enhance the speed and consistency of the takt time, iron mold storage units 600 are disposed at both ends of the compacting and pouring unit, and the iron mold storage units 600 are used for temporarily storing iron molds, thereby providing sufficient time for compacting and pouring the iron molds by the compacting and pouring unit and cooling and forming castings without affecting the implementation of the subsequent processes, so that the overall takt time is compact and consistent. The iron mold storage unit 600 is composed of multiple groups of parallel conveying roller tables, the conveying roller tables of the groups are mutually independent and do not affect each other, in addition, the multiple groups of parallel conveying roller tables can also store iron molds of different specifications, the iron molds of the conveying roller tables of the same group are identical in specification, and the iron molds of different groups are different in specification and model, so that the requirement of casting castings of different specifications of the metal mold sand-lined casting production line provided by the embodiment is met.

In a specific embodiment, the iron mold storage unit 600 is provided with a ferrying device 700 at both ends. The ferry device 700 comprises a rollgang and a ferry trolley 710 moving on the rollgang, wherein the ferry trolley 710 is provided with a space for accommodating the iron mold, and the ferry trolley 710 is further provided with a locking structure for preventing the iron mold from sliding off the ferry trolley 710. So that the ferrying trolley 710 can be moved to a corresponding position to carry and transport the iron mold when it is required to input the iron mold into the iron mold storage unit 600 or output the iron mold on the iron mold storage unit 600. In addition, in order to quickly unload the iron molds on the ferry trolley 710, a pushing cylinder 800 for pushing the iron molds is installed at the unloading position of the ferry trolley 710, and in a specific embodiment, the pushing cylinder 800 is a hydraulic cylinder, or other pushing mechanisms are designed by those skilled in the art according to practical situations.

In order to meet the requirements of different types of vibration shakeout machines 509 and core shooters 502, iron molds of corresponding types are processed simultaneously, so that the production tact and continuity are improved. After the compaction pouring unit is compacted and poured, the iron molds with different specifications are conveyed to the conveying roller ways of the corresponding groups by the ferrying trolley 710, and when the ferrying trolley 710 at the other end of the iron mold storage unit 600 takes out the iron molds, the iron molds with different specifications are alternately taken out by the swinging trolley 710 and placed on the conveying roller ways, so that the iron molds with different specifications are alternately conveyed to the vibrating shakeout machine 509 and the core shooter 502 with corresponding models.

As shown in fig. 4, after the pouring of the iron mold by the compacting pouring unit is completed, the iron mold filled with the metal liquid has a large inertia during the conveying process due to the increase of the overall mass of the iron mold, and in order to avoid the iron mold from causing a large impact on the ferrying trolley 710 when the iron mold is conveyed to the ferrying trolley 710, a buffer cylinder 900 is arranged in the moving direction of the iron mold toward the ferrying trolley 710, and the buffer cylinder 900 abuts against the iron mold to remove most of the inertia of the iron mold, thereby reducing the impact force on the ferrying trolley 710.

As shown in fig. 5, after the second double-station box turner 510 is cleaned, the cleaned iron mold is conveyed to the temperature adjusting system 501 by the conveying roller way, so that the iron mold enters the sand-lined casting production process again, and the circular casting production of the iron mold in the metal mold sand-lined casting production line provided by the embodiment is realized.

It should be noted that, in the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described as different from other embodiments, and identical and similar parts between the embodiments are all enough to be referred to each other.

As used in this application and in the claims, the terms "a," "an," "the," and/or "the" are not specific to the singular, but may include the plural, unless the context clearly dictates otherwise. In general, the terms "comprises" and "comprising" merely indicate that the steps and elements are explicitly identified, and they do not constitute an exclusive list, as other steps or elements may be included in a method or apparatus. The inclusion of an element defined by the phrase "comprising one … …" does not exclude the presence of additional identical elements in a process, method, article, or apparatus that comprises an element.

Wherein, in the description of the embodiments of the present application, "/" means or is meant unless otherwise indicated, for example, a/B may represent a or B; "and/or" herein is merely an association relationship describing an association object, and means that three relationships may exist, for example, a and/or B may mean: a exists alone, A and B exist together, and B exists alone. In addition, in the description of the embodiments of the present application, "plurality" means two or more than two.

The terms "first" and "second" are used below for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature.

The principles and embodiments of the present utility model have been described herein with reference to specific examples, the description of which is intended only to facilitate an understanding of the core concepts of the utility model. It should be noted that it will be apparent to those skilled in the art that various modifications and adaptations of the utility model can be made without departing from the principles of the utility model and these modifications and adaptations are intended to be within the scope of the utility model as defined in the following claims.

Claims (10)

1. The utility model provides a rollgang which characterized in that includes:

a roller bed support (100);

the rail devices (200) are arranged in two, and the rail devices (200) are arranged on the roller way bracket (100) to convey iron molds;

a roller device (300) comprising a plurality of supporting rollers (310) for carrying the iron mold, wherein each supporting roller (310) is arranged on the rail device (200) at intervals along the extending direction of the rail device (200), and each supporting roller (310) can rotate around the axis of the supporting roller device;

and the driving device (400) is connected with the roller device (300) and is used for driving each supporting roller (310) to rotate.

2. A rollgang according to claim 1, characterized in that the roller means (300) comprises a first transmission (320), the first transmission (320) being connected to each of the support rollers (310) so as to rotate each of the support rollers (310) in synchronization.

3. A rollgang according to claim 2, characterized in that the first transmission part (320) comprises a first sprocket set (321) for chain transmission and a first chain (322), each of the support rollers (310) being provided with the first sprocket set (321), and each of the first sprocket sets (321) being connected to each other by the first chain (322).

4. A rollgang according to claim 3 characterized in that one of the support rollers (310) of each of the support rollers (310) on any one of the track arrangements (200) is a driving support roller, the other support rollers (310) are driven support rollers, and the first sprocket set (321) comprises a first sprocket and a second sprocket;

the first sprocket on any one of the driven support rollers is in transmission connection with the first sprocket on the driven support roller on the first side of the driven support roller through a first chain (322), and the second sprocket on the driven support roller is in transmission connection with the second sprocket on the driven support roller on the second side of the driven support roller through another first chain (322);

the first sprocket of the driving support roller is in transmission connection with the driving device (400) through a second transmission part (410), and the second sprocket of the driving support roller is in transmission connection with the second sprocket on the adjacent driven support roller through another first chain (322).

5. The rollgang according to claim 4, characterized in that the second transmission (410) comprises a drive sprocket (411), a second sprocket set (420) and a second chain (412);

the driving chain wheel (411) is arranged on the driving device (400);

the second sprocket set (420) comprises two output sprockets (422) and an input sprocket (421), the input sprocket (421) is in transmission connection with the driving sprocket (411) through one second chain (412), and the two output sprockets (422) are in transmission connection with the driving wheels of the two track devices (200) through the second chains (412) in one-to-one correspondence respectively.

6. A metal mold sand lined casting line comprising: a transfer table for transferring iron molds for transferring the iron molds to a casting mold process system to complete casting of a casting, and the transfer table being the transfer table according to any one of claims 1 to 5.

7. The sand-lined metal mold casting line of claim 6, wherein the mold process system comprises: the iron mold conveying device comprises a temperature regulating system (501), a core shooting machine (502), a first double-station box overturning machine (503), a first single-station box overturning machine (504), a box closing machine (505), a compaction casting unit, a piece taking machine (506), a box opening machine (507), a second single-station box overturning machine (508), a vibration shakeout machine (509) and a second double-station box overturning machine (510) which are sequentially arranged along the iron mold conveying direction.

8. The metal mold sand-lined casting production line according to claim 7, characterized in that the compaction casting unit comprises a compactor (511) and a casting machine (512), the compactor (511) is provided in plurality, each compactor (511) is arranged at intervals along the iron mold conveying direction, and each compactor (511) is connected through the conveying roller way;

the casting machine (512) moves along the direction in which each of the compacting machines (511) conveys the iron mold so as to pour the iron mold on the compacting machine (511) with a metal liquid.

9. The metal mold sand-lined casting line according to claim 7, characterized in that both ends of the compaction casting unit are arranged with iron mold storage units (600) for storing the iron molds, the iron mold storage units (600) comprising the conveying roller tables connected in parallel to each other in the iron mold conveying direction;

and ferrying units (700) are arranged at two ends of each iron mold storage unit (600), and the ferrying units (700) are used for conveying the iron molds for each iron mold storage unit (600).

10. The metal mold sand-lined casting production line according to any one of claims 7 to 9, characterized in that the second double-station box-turning machine (510) is connected with the temperature regulating system (501) through the conveying roller way, so that the iron mold conveyed out of the second double-station box-turning machine (510) enters the temperature regulating system (501) to enable the iron mold to enter the sand-lined casting production process again.

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