Extrusion die cooling system

Abstract

The application discloses a casting external cooling system, which comprises a trolley conveying line and a plurality of trolleys arranged in sequence on the trolley conveying line. The trolley conveying line comprises a first translation transfer trolley, a first lifting rotary device, a second translation transfer trolley and a second lifting rotary device arranged in sequence and connected through four conveying tracks to form a conveying closed loop. A group of trolley pushing devices is arranged beside each conveying track. A first mechanical arm is arranged beside the first translation transfer trolley. A secondary sand dropping treatment device and a second mechanical arm for assisting casting transfer are arranged on one side of the conveying track between the second translation transfer trolley and the second lifting rotary device. A pushing device is correspondingly arranged on the other side of the conveying track. The casting external cooling system of the application has an automatic production line, can work in a cycle, is reliable in operation, convenient in maintenance, improves production efficiency and can clean the castings twice.

Description

TECHNICAL FIELD

[0001] The application belongs to the field of casting production, and particularly relates to a casting mold external cooling system applied to a casting cooling and plane conveying logistics process. BACKGROUND

[0002] After casting, the mold external cooling system is a way for the mechanical casting workshop to cool the casting. It is often used for casting cooling after the sand treatment of the drop machine, and the casting is cooled through the trolley. The cooled casting enters the subsequent working step. However, the existing casting cooling usually adopts a long cooling line, occupies a large area, and the sand and impurities remaining on the surface of the casting cannot be further cleaned in this process. As described in Chinese patent CN 113547115 A, the casting is directly cooled outside the mold after the sand treatment of the drop machine and then enters the next working step. In order to save the land cost and make the work more efficient, people need to find a better casting mold external cooling system. SUMMARY

[0003] The purpose of the application is to provide a casting mold external cooling system with small land occupation, flexible operation, further impurity removal for the casting, high production efficiency and full automation.

[0004] The application is realized by the following technical scheme:

[0005] The casting-type external cooling system includes a trolley conveyor line and several trolleys arranged sequentially on the trolley conveyor line. The trolley conveyor line includes a first translational transfer trolley, a first lifting rotary device, a second translational transfer trolley, and a second lifting rotary device, arranged sequentially and connected by four conveyor tracks to form a closed conveying loop. Each conveyor track has a set of pusher devices (first, second, third, and fourth sets) for moving the trolleys between the translational transfer trolleys and the lifting rotary devices. Specifically, each set of pusher devices clamps the trolleys arranged in a row from both the front and rear sides of its respective conveyor track and moves only one trolley position at a time before returning to its original position, repeating the pushing process. Next to the first translational transfer trolley, a first robotic arm is provided for removing trolleys from the front conveyor line after passing through the sand removal machine. The sand-treated castings are picked up onto a trolley located on the first translational transfer trolley to begin cooling. On one side of the conveying track between the second translational transfer trolley and the second lifting rotary device, there is also a primary and secondary sand-removal treatment device and a second robotic arm for assisting in the transfer of castings. The secondary sand-removal treatment device includes a sand-removal treatment chamber and a treatment chamber feed line perpendicular to the conveying track. A pushing device is correspondingly set on the other side of the conveying track to push the castings on the trolley onto the treatment chamber feed line for feeding the secondary sand-removal treatment device. When the castings are small, the pushing device pushes them from the conveying track to the secondary sand-removal treatment device. When the castings are large, the second robotic arm picks up the castings directly from the conveying track into the sand-removal treatment chamber for processing, thereby avoiding damage to the treatment chamber feed line caused by large castings.

[0006] Preferably, a second cooling conveyor line is provided next to the secondary sand removal device to cool the castings that have undergone the secondary sand removal process.

[0007] Preferably, the processing bin feeding line includes a vibrating conveyor table, which shakes off impurities from the castings while conveying the material.

[0008] More preferably, the second cooling conveyor line is equipped with cooling plates.

[0009] Preferably, each set of trolley devices includes a main pushing mechanism located at the front end of the conveying track and a secondary pushing mechanism located at the rear end of the conveying track. The main pushing mechanism and the secondary pushing mechanism cooperate with each other on the conveying track, clamping the trolleys arranged in a row from both the front and rear sides of the conveying track and moving only one trolley position at a time, then returning to their original positions, and then repeating the pushing process.

[0010] More preferably, the main pushing mechanism and the auxiliary pushing mechanism each comprise a base and a moving block movably arranged on the base via a slide rail, and a holding rod is fixed on the moving block to hold one side of the trolley from one side. Further, the base is provided with a first rack along the advancing direction of the conveying track, and the moving block is provided with a first gear driven by a motor and capable of engaging with the first rack, and the first gear is driven by the motor to move relative to the first rack, so as to realize the advancing or retreating of the moving block with the holding rod. In the present application, the holding rods of the main pushing mechanism and the auxiliary pushing mechanism are arranged oppositely, so as to cooperatively hold the trolleys arranged in a row from the front and rear sides of the conveying track, and then one trolley is moved to the rear, the holding rod of the main pushing mechanism returns to the original position under the operation of the gear and rack driving structure, the trolley at the front side is removed by the next pushing device or the translation trolley, the holding rod of the auxiliary pushing mechanism returns to the original position under the operation of the gear and rack driving structure, and the next pushing is waited.

[0011] Further, the main pushing mechanism and the auxiliary pushing mechanism are horizontal pushing structures with the holding rods holding the trolleys from the horizontal direction or vertical pushing structures with the holding rods holding the trolleys from the vertical direction. In the present application, one of the main pushing mechanism and the auxiliary pushing mechanism is the horizontal pushing structure and the other is the vertical pushing structure at the intersection of the two conveying tracks provided with the lifting rotary device at the middle connection, so as to realize the non-interference of space, and the main pushing mechanism and the auxiliary pushing mechanism at other positions are the horizontal pushing structures with the holding rods holding the trolleys from the horizontal direction.

[0012] As a preferred, each lifting rotary device comprises a lifting base and a rotating platform arranged on the lifting base, after the trolley is pushed to the lifting rotary device, the lifting rotary device is first lowered, then rotated to rotate the trolley by 90°, and then raised, and the trolley is continuously pushed by the pushing device to move forward.

[0013] More preferably, the lifting base is provided with a vertical slide rail, and the rotating platform is movable up and down along the vertical slide rail, and specifically, the rotating platform comprises a rotating base and a rotating table arranged above the rotating base and rotatable relative to the rotating base, a vertical rack is connected to the rotating base, and a lifting gear driven by a motor and capable of engaging with the vertical rack is arranged on the lifting base, and the lifting of the rotating platform is realized through the cooperation of the lifting gear and the vertical rack; the rotating table is arranged above the rotating base via a slewing bearing, an inner tooth is arranged on the inner ring of the slewing bearing, and a rotating gear driven by a motor and capable of engaging with the inner tooth is arranged on the rotating base, and the slewing of the rotating table relative to the rotating base is realized through the cooperation of the inner tooth and the rotating gear, and the slewing angle of the lifting rotary device is 90° in the present application.

[0014] As preferred, each translation transport trolley comprises a fixed guide rail and a transport trolley arranged on the fixed guide rail, the fixed guide rail is provided with a second rack, and the bottom of the transport trolley is provided with a second gear driven by a motor and engaged with the second rack, through the cooperation of the second gear and the second rack, the transport trolley is realized to move back and forth on the fixed guide rail to transport the trolley.

[0015] As preferred, the pushing device comprises a support and a pushing cylinder arranged on the support, a pushing block is arranged on the movable end of the pushing cylinder, and a scraper and a brush are further arranged on the pushing device, which are used to push the castings on the trolley while scraping the impurities scattered on the trolley to the processing bin feeding line together, and the scraper and the brush are arranged on the lower side of the pushing block.

[0016] As preferred, the casting external mold cooling system further comprises a cooling ventilation fan and a cooling ventilation cover for accelerating the cooling of the castings.

[0017] More preferably, the motors used in each gear and rack driving structure are servo motors, which can be precisely positioned through the servo motors.

[0018] More preferably, the racks used in each gear and rack driving structure are spliced racks, which are convenient to extend according to needs.

[0019] The beneficial effects of the present application are:

[0020] The casting external mold cooling system of the present application has a simple and ingenious structure, an automatic production line, can work in a cycle, is reliable in operation, convenient to maintain, economical, reduces manual operation, greatly improves production efficiency, and the castings can be cleaned twice, reduces the difficulty of subsequent processing, greatly reduces the production cost, and has the following very prominent advantages.

[0021] 1) flexible arrangement and convenient adjustment, the number of trolleys can be set according to the cooling time;

[0022] 2) fixed transportation line, suitable for conveying in an automatic production line;

[0023] 3) the trolley conveying is more suitable for conveying high-temperature castings, which can maximize avoid the damage of high-temperature castings to the cooling line. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to facilitate the description, the present application is described in detail by the following specific embodiments and drawings.

[0025] Figure 1 is a top view structural schematic diagram of an embodiment of the present application;

[0026] Figure 2 is a reduced drawing of Figure 1 ;

[0027] Figure 3 is a reduced view of Figure 1

[0028] Figure 4 is a structural diagram of the trolley;

[0029] Figure 5 is a structural diagram of the lifting rotary device;

[0030] Figure 6 is a front view structural diagram of the vertical pushing structure of the pushing device's embracing pole from the vertical direction to embrace the trolley;

[0031] Figure 7 is a side view structural diagram of the vertical pushing structure of the pushing device's embracing pole from the vertical direction to embrace the trolley;

[0032] Figure 8 is a side view structural diagram of the horizontal pushing structure of the pushing device's embracing pole from the horizontal direction to embrace the trolley;

[0033] Figure 9 is a top view structural diagram of the horizontal pushing structure of the pushing device's embracing pole from the horizontal direction to embrace the trolley;

[0034] Figure 10 is a running structural diagram of the translation transfer trolley;

[0035] Figure 11 is a side view structural diagram of the translation transfer trolley;

[0036] Figure 12 is a structural diagram of the pushing device. Embodiment

[0037] As Figures 1-12 ​As shown, the casting-type external cooling system includes a trolley conveyor line and several trolleys 1 arranged sequentially on the trolley conveyor line. The trolley conveyor line includes a first translational transfer trolley 3, a first lifting rotary device 4, a second translational transfer trolley 5, and a second lifting rotary device 6, arranged sequentially and connected by four conveyor tracks 2 to form a conveying closed loop. Each conveyor track 2 is accompanied by a set of pusher devices 7, namely the first, second, third, and fourth sets of pusher devices 7-1, 7-2, 7-3, and 7-4, used to move the trolleys 1 between the translational transfer trolleys and the lifting rotary devices. Specifically, each set of pusher devices clamps the trolleys arranged in a row from both the front and rear sides of its respective conveyor track and moves only one trolley position at a time, then returns to its original position, and repeats the pushing process. This facilitates pushing the trolleys located at the ends from the conveyor track onto the translational transfer trolleys and lifting rotary devices, or pushing the trolleys from the translational transfer trolleys and lifting rotary devices to the next section of the conveyor. The castings are fed onto the conveyor track. Next to the first translational transfer trolley 3, a first robotic arm 8 is provided to grab the castings 10 that have been sand-treated by the sand removal machine from the front-end conveyor line and place them onto the trolley 1 located on the first translational transfer trolley 3 for cooling. On one side of the conveyor track 2 between the second translational transfer trolley 5 and the second lifting rotary device 6, there is also a primary and secondary sand removal device and a second robotic arm 14 for assisting in the transfer of castings. The secondary sand removal device includes a sand removal chamber 9 and a processing chamber feed line 11 perpendicular to the conveyor track 2. A pushing device 12 is correspondingly set on the other side of the conveyor track 2 to push the castings 10 on the trolley 1 onto the processing chamber feed line 11. When the castings are small, the pushing device pushes the castings from the conveyor track to the secondary sand removal device. When the castings are large, the second robotic arm 14 directly grabs the castings from the conveyor track and places them into the sand removal chamber 9 for processing, thereby avoiding damage to the processing chamber feed line caused by large castings.

[0038] Next to the secondary sand removal device, a second cooling conveyor line 13 is also provided for cooling the casting 10 that has undergone secondary sand removal.

[0039] The processing chamber feeding line 11 includes a vibrating conveyor table, which shakes off impurities from the castings while conveying materials.

[0040] The second cooling conveyor line 13 is equipped with cooling scales 15.

[0041] Each set of pusher devices 7 includes a main pusher mechanism located at the front end of the conveying track and a secondary pusher mechanism located at the rear end of the conveying track. The main pusher mechanism and the secondary pusher mechanism work together in front of and behind the conveying track to clamp the trolleys 1 arranged in a row from both the front and rear sides of the conveying track and move only one trolley position at a time, then return to their original positions, and repeat the pushing process.

[0042] The main pushing mechanism and the auxiliary pushing mechanism each include a base 71 and a moving block 72 movably arranged on the base 71 through a slide rail, and a holding rod 73 is fixed on the moving block 72 and can hold one side of the trolley 1. Preferably, the base 71 is provided with a first rack 74 along the advancing direction of the conveying track 2, and the moving block 72 is provided with a first gear driven by a motor and engaged with the first rack 41, and the first gear is driven by the motor to move relative to the first rack 74, so as to realize the advancing or retreating of the moving block 72 with the holding rod 73. In the present application, the holding rods 73 of the main pushing mechanism and the auxiliary pushing mechanism are oppositely arranged, so as to cooperatively hold the trolleys arranged in a row from the front and back sides of the conveying track 2, and then one trolley is moved to the rear, the holding rod of the main pushing mechanism is returned to the original position under the operation of the gear and rack driving structure, the trolley at the front side is removed by the next pushing device or the translation trolley, the holding rod of the auxiliary pushing mechanism is returned to the original position under the operation of the gear and rack driving structure, and the next pushing is waited.

[0043] Preferably, the main pushing mechanism and the auxiliary pushing mechanism are horizontal pushing structures 76 with the holding rods holding the trolleys from the horizontal direction or vertical pushing structures 77 with the holding rods holding the trolleys from the vertical direction, and one of the main pushing mechanism and the auxiliary pushing mechanism is the horizontal pushing structure and the other is the vertical pushing structure at the intersection of the two conveying tracks provided with the lifting rotary devices at the middle connection, so as to realize the non-interference of space, and the main pushing mechanism and the auxiliary pushing mechanism at other positions are the horizontal pushing structures with the holding rods holding the trolleys from the horizontal direction. In the present embodiment, the auxiliary pushing mechanism of the first group and the main pushing mechanism of the fourth group are the vertical pushing structures 77 with the holding rods holding the trolleys from the vertical direction, and the main pushing mechanism and the auxiliary pushing mechanism of other groups are the horizontal pushing structures 76 with the holding rods holding the trolleys from the horizontal direction.

[0044] Each lifting rotary device includes a lifting base 41 and a rotating platform arranged on the lifting base 41, and after the trolley 1 is pushed onto the lifting rotary device, the lifting rotary device is first lowered, then rotated to rotate the trolley by 90°, and then raised, and the trolley is continuously pushed by the pushing device 4 to move forward.

[0045] More preferably, the lifting base 41 is provided with a vertical slide rail, and the rotating platform is movable up and down along the vertical slide rail, in particular, the rotating platform comprises a rotating base 43 and a rotating table 44 which is rotatable relative to the rotating base 43 and located above the rotating base 43, a vertical rack 45 is connected to the rotating base 43, and the lifting base 41 is provided with a lifting gear 46 driven by a motor and capable of engaging with the vertical rack 45, so that the lifting of the rotating platform is realized through the cooperation of the lifting gear 46 and the vertical rack 45; the rotating table 44 is arranged above the rotating base 43 through a slewing bearing 47, an inner tooth is arranged on the inner ring of the slewing bearing 47, and a rotating gear 48 driven by a motor and capable of engaging with the inner tooth is arranged on the rotating base 43, so that the slewing of the rotating table relative to the rotating base 43 is realized through the cooperation of the inner tooth and the rotating gear 48, and in the application, the slewing angle of the lifting slewing device is 90°.

[0046] Each translation transfer trolley comprises a fixed guide rail 31 and a transfer trolley 32 arranged on the fixed guide rail 31, the fixed guide rail 31 is provided with a second rack 33, and the bottom of the transfer trolley 32 is provided with a second gear 34 driven by a motor and capable of engaging with the second rack 33, so that the transfer trolley 32 is movable back and forth on the fixed guide rail 31 to transfer the trolley through the cooperation of the second gear 34 and the second rack 33.

[0047] The pushing device 12 comprises a support 121 and a pushing cylinder 122 arranged on the support 121, the movable end of the pushing cylinder 122 is provided with a pushing block 123, and the pushing device 12 is further provided with a scraper 124 and a brush, which are arranged on the lower side of the pushing block and used for pushing the casting on the trolley while scraping the impurities scattered on the trolley to the processing bin feeding line 11 together.

[0048] The casting mold external cooling system further comprises a cooling ventilation fan and a cooling ventilation cover, which are used for accelerating the cooling of the casting.

[0049] The motors used in the above gear and rack driving structures are all servo motors, and through the servo motors, accurate positioning can be realized.

[0050] The racks used in the above gear and rack driving structures are all splicable racks, which are convenient for extension according to needs.

[0051] Working process:

[0052] The casting is grabbed by the first mechanical arm from the knock-out machine to the trolley on the first translation transfer trolley (the trolley can be located on the front and rear positions of the first translation transfer trolley, if located on the front side, it is also transferred to the entrance end of the first section of the conveying track on the left side through the first translation transfer trolley), all the trolleys on the first section of the conveying track on the left side are clamped by the first group of trolley devices, then the trolleys are moved as a whole by one trolley position, the trolley at the front end is moved to the first lifting rotary device which has no trolley before, the first lifting rotary device rotates 90° (firstly descends, then rotates, and then ascends), the trolleys on the second section of the conveying track on the lower side are clamped by the second group of trolley devices, then the trolleys are moved as a whole by one trolley position, the trolley at the front end is moved to the second translation transfer trolley, the second translation transfer trolley moves to the next working position, the trolley at the front side on the conveying track is moved to the second lifting rotary device by the third group of trolley devices, meanwhile, when the casting is small, the casting on the trolley is pushed from the conveying track to the feeding line of the processing bin of the secondary knock-out processing device by the side pushing device to be fed for secondary knock-out processing, when the casting is large, the casting is directly grabbed from the conveying track to the knock-out processing bin by the second mechanical arm to be processed, the second lifting rotary device rotates 90° to rotate the trolley back to the initial angle and return to the original position, then the trolley at the front side on the conveying track is moved to the first translation transfer trolley 1 by the fourth group of trolley devices, and the circulation work is carried out.

[0053] Specifically, each group of trolley devices clamps the trolley through main pushing and auxiliary pushing.

[0054] The control mode of the present application is automatically controlled through a controller, the control circuit of the controller can be realized through simple programming by those skilled in the art, the power supply also belongs to the common knowledge in the art, and the present application is mainly used to protect the mechanical device, so the control mode and circuit connection of the present application will not be explained in detail.

[0055] The lifting rotary device of the present application is also a lifting rotary device that can be purchased on the market, and its structure belongs to the common knowledge in the art, so the structure of the lifting rotary device will not be introduced in detail.

[0056] The casting type external cooling system of the present application has a simple and ingenious structure, an automatic production line, can work in circulation, is reliable in operation, convenient to maintain, economical, reduces manual operation, greatly improves production efficiency, and the casting can be cleaned twice, reduces the difficulty of subsequent processing, and greatly reduces the production cost, and has the following very prominent advantages.

[0057] 1) flexible arrangement and convenient adjustment, the number of trolleys can be set according to the cooling time;

[0058] 2) The transport line is fixed, and is suitable for conveying in an automatic production line;

[0059] 3) The trolley conveying is more suitable for conveying high-temperature castings, and can maximize the avoidance of damage of the high-temperature castings to the cooling line.

[0060] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, any change or replacement without creative labor should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be limited by the protection scope defined in the claims.

Claims

1. An external cooling system for a casting mold, characterized by, The trolley conveying line comprises a first translation transfer trolley, a first lifting rotary device, a second translation transfer trolley, and a second lifting rotary device which are sequentially arranged and connected by four conveying tracks to form a conveying closed loop. A group of trolley devices is arranged beside each conveying track, which are the first, second, third, and fourth groups of trolley devices, for moving the trolleys between the translation transfer trolleys and the lifting rotary devices. A first mechanical hand is arranged beside the first translation transfer trolley for grabbing the sand-treated castings from the front-end conveying line to the trolleys on the first translation transfer trolley to start cooling. A secondary sand treatment device and a second mechanical hand for assisting the transfer of the castings are arranged on one side of the conveying track between the second translation transfer trolley and the second lifting rotary device. The secondary sand treatment device comprises a sand treatment bin and a treatment bin feeding line perpendicular to the conveying track. A pushing device is correspondingly arranged on the other side of the conveying track for pushing the castings on the trolleys to the treatment bin feeding line. A second cooling conveying line is arranged beside the secondary sand treatment device for cooling the castings after the secondary sand treatment. The treatment bin feeding line comprises a vibrating conveying table for vibrating and removing impurities on the castings while conveying the materials. Each group of trolley devices comprises a main pushing mechanism at the front end of the conveying track and a secondary pushing mechanism at the rear end of the conveying track. The main pushing mechanism and the secondary pushing mechanism cooperate in front of and behind the conveying track to clamp the trolleys arranged in a row from the front and rear sides of the conveying track and move one trolley position at a time, then return to the original position, and then repeat the pushing process.

2. The mold external cooling system of claim 1, wherein The second cooling conveying line is provided with cooling scales.

3. The mold external cooling system of claim 1, wherein The main pushing mechanism and the secondary pushing mechanism each comprise a base and a moving block movably arranged on the base through a sliding rail. A holding rod is fixed to the moving block to hold one side of the trolley.

4. The mold external cooling system of claim 1, wherein Each lifting rotary device comprises a lifting base and a rotating platform arranged on the lifting base. After the trolley is pushed onto the lifting rotary device, the lifting rotary device is lowered, then rotated to rotate the trolley by 90°, and then raised to continue pushing the trolley forward by the trolley device.

5. The mold external cooling system of claim 4, wherein, The lifting base is provided with a vertical sliding rail, and the rotating platform is movable up and down along the vertical sliding rail. Specifically, the rotating platform comprises a rotating base and a rotating table arranged above the rotating base and rotatable relative to the rotating base. A vertical rack is connected to the rotating base, and a lifting gear driven by a motor and engageable with the vertical rack is arranged on the lifting base. The lifting of the rotating platform is realized by the cooperation of the lifting gear and the vertical rack. The rotating table is arranged above the rotating base through a slewing bearing. An inner tooth is arranged on the inner ring of the slewing bearing, and a rotating gear driven by a motor and engageable with the inner tooth is arranged on the rotating base. The slewing of the rotating table relative to the rotating base is realized by the cooperation of the inner tooth and the rotating gear.

6. The external cooling system of claim 1, wherein, Each translation transfer trolley comprises a fixed guide rail and a transfer trolley erected on the fixed guide rail, the fixed guide rail is provided with a second rack, the bottom of the transfer trolley is provided with a second gear driven by a motor and engaged with the second rack, and through cooperation of the second gear and the second rack, the transfer trolley is realized to move back and forth on the fixed guide rail to transfer the trolley.

7. The external cooling system of claim 1, wherein The pushing device comprises a support and a pushing cylinder arranged on the support, a pushing block is arranged on the movable end of the pushing cylinder, a scraper and a brush are further arranged on the pushing device, and the scraper and the brush are arranged on the lower side of the pushing block, so as to push the castings on the trolley and scrape the impurities scattered on the trolley to the processing bin feeding line at the same time.

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