Precoated sand paving and collecting circulating device for casting

Abstract

A precoated sand paving and collecting circulating device for casting comprises a sand feeding mechanism and a plate curtain type sand carrying mechanism, the left end of the plate curtain type sand carrying mechanism extends to the sand feeding mechanism, and the right end of the plate curtain type sand carrying mechanism is supported on a terrace; the negative pressure vacuum feeding machine is communicated with the sand feeding mechanism; the vibration type mold and sand receiving mechanism is arranged between the plate curtain type sand carrying mechanism and the left side of the front end of the casting output mechanism, the casting output mechanism is located on the left side of the precoated sand circulating and recycling mechanism, and the sand storage bin is arranged on the floor terrace and corresponds to the right side of the upper end of the precoated sand circulating and recycling mechanism. The sand storage bin receives the precoated sand output by the precoated sand circulating and recycling mechanism and supplies the received precoated sand to the negative-pressure vacuum feeding machine through a sand returning pipeline, and the position, in the pit, of the lower portion of the right end of the vibration type mold and sand receiving mechanism communicates with the lower end of the precoated sand circulating and recycling mechanism. The device has the advantages that the precoated sand can well protect the mold and the plate curtain which are arranged on the precoated sand; and high-efficiency utilization of the precoated sand is reflected, pollution is reduced, and the quality of casting parts is guaranteed.

Description

Technical Field

[0001] The utility model belongs to the technical field of casting molding equipment, and particularly relates to a sand-laying and sand-collecting circulation device for casting. Background Art

[0002] The aforementioned coated sand refers to molding sand or core sand with a solid resin film covering the surface of the sand particles. This type of sand has suitable strength properties and good fluidity.

[0003] The coating sand laying and sand collecting for casting described in this application refers to automatically laying a layer of coating sand of uniform thickness on the upper surface of the plate curtain that moves in a cycle, and the online workers place the molds for casting and forming products one by one on the surface of the coating sand on the plate curtain, and the steel ladle, iron ladle, teapot ladle or ductile iron ladle corresponding to the mold above the plate curtain pours molten steel or molten iron into the mold (called "casting" in the industry), and then forms a cycle of standing, demolding, demolding, discharging, sand collecting, and coating (sand laying) in sequence. The self-evident advantages of sand laying and sand collecting in the above process are at least: it helps to make efficient use of resources, because the repeated use of sand laying and sand collecting can significantly reduce the waste of raw materials, improve resource utilization efficiency and reduce production costs; it is beneficial to reduce environmental pollution, because recycling can reduce the discharge of waste sand, embodying environmental friendliness and meeting environmental protection requirements; it is beneficial to ensure the quality of castings, because recycling can ensure the stability of the quality of castings and reduce casting defects; it is convenient to improve production efficiency, because the recycling of coated sand can reasonably simplify the production process, reduce the preparation of sand and save the processing time of sand, thereby improving production efficiency.

[0004] Chinese patent CN208743610U recommends a "new type of coated sand production device" and CN2633467Y provides a "thermal regeneration device for coated sand for casting", etc. However, there is no relevant technical information for automatically laying (also called "laying") coated sand on a plate curtain and automatically dropping the plate curtain, that is, automatically unloading the coated sand for collection and recycling. The technical solution to be introduced below was produced in this context. Utility Model Content

[0005] The task of the utility model is to provide a coated sand laying and collecting circulation device for casting, which can realize the high-efficiency utilization of coated sand, reduce pollution to the environment, ensure the quality of castings and improve production efficiency by providing a sand feeding mechanism to automatically lay coated sand on the plate curtain and collect the coated sand removed from the plate curtain after the workpiece casting is completed and return it to the sand feeding mechanism for sand laying.

[0006] The task of the present invention is accomplished in this way: a device for circulating coated sand for casting, comprising a sand feeding mechanism and a plate curtain type sand carrying mechanism for receiving and carrying the coated sand fed by the sand feeding mechanism, the sand feeding mechanism being supported on the floor of the casting site when in use, the left end of the plate curtain type sand carrying mechanism extending to the sand feeding mechanism, and the right end also being supported on the floor of the casting site; a negative pressure vacuum loader, which is supported on the floor along with the sand feeding mechanism and is communicated with the sand feeding mechanism by a hose; a vibrating mold-joining sand receiving mechanism, a casting output mechanism, a coated sand recycling mechanism and a sand storage bin, the vibrating mold-joining sand receiving mechanism being arranged on the plate curtain type sand carrying mechanism and the casting output mechanism The front end left side of the output mechanism, and the casting output mechanism is located on the left side of the coated sand circulation and recycling mechanism and is supported on the floor. The coated sand circulation and recycling mechanism is supported in a longitudinal state in a pit opened on the floor, and the upper end of the coated sand circulation and recycling mechanism extends upward to above the upper floor. The sand storage bin is arranged on the floor at a position corresponding to the right side of the upper end of the coated sand circulation and recycling mechanism. The sand storage bin receives the coated sand output by the coated sand circulation and recycling mechanism and supplies the received coated sand to the negative pressure vacuum loader through the return sand pipeline, wherein the position below the right end of the vibration type mold and sand receiving mechanism in the pit is connected to the lower end of the coated sand circulation and recycling mechanism.

[0007] In a specific embodiment of the present invention, the sand feeding mechanism includes a sand feeding hopper support frame, a sand feeding hopper and a uniform sand guiding device. The sand feeding hopper support frame is supported on the floor of the casting site when in use. The sand feeding hopper is arranged on the top of the sand feeding hopper support frame through the sand feeding hopper fixing block. The upper part of the sand feeding hopper is configured as an open opening, and the lower part and along the length direction of the sand feeding hopper are configured with a sand feeding hopper sand outlet slot for leading out the coated sand in the sand feeding hopper cavity of the sand feeding hopper. The uniform sand guiding device is arranged along the length direction of the sand feeding hopper. the upper right side of the sand feeding hopper; the left end of the plate curtain type sand loading mechanism extends to the middle of the height direction of the sand feeding hopper support frame at a position corresponding to the bottom of the sand feeding hopper, and the coated sand from the sand outlet slot of the sand feeding hopper is received by the left end of the plate curtain type sand loading mechanism; the sand outlet slot of the sand feeding hopper is inclined toward the right side wall of the sand feeding hopper of the sand feeding hopper in the longitudinal direction of the lower part of the left side wall of the sand feeding hopper and is formed by a space with a width of 0.5-1.5 cm between the length direction and the lower part of the right side wall of the sand feeding hopper.

[0008] The cam is fixed to the upper right corner of the sand feeding hopper and the lower right corner of the sand feeding hopper, and the cam is fixed to the upper right corner of the sand feeding hopper and the lower right corner of the sand feeding hopper, and the cam is fixed to the upper right corner of the sand feeding hopper and the upper right corner of the sand feeding hopper. Its slider groove is slidably matched with the sand guide rod reciprocating slider guide rail, and the upper end of the sand guide rod is formed with a slider fixing plate bent in the direction of the reciprocating slider of the sand guide rod. The slider fixing plate is fixed to the upper side of the reciprocating slider of the sand guide rod, and the lower end of the sand guide rod extends downward in a longitudinal cantilever state to the position of the sand outlet slot of the sand feeding hopper. The sand driving and sand leveling plate is fixed to the left side of the sand guide rod in a longitudinal state and forms a vertical relationship with the left side of the sand guide rod. The bottom of the sand driving and sand leveling plate corresponds to the upper part of the sand outlet slot of the sand feeding hopper while maintaining a distance between it and the sand outlet slot of the sand feeding hopper; the driving plate acting cylinder is a rodless cylinder; the cross-sectional shape of the sand guide rod reciprocating slider guide rail is a dovetail shape, and the cross-sectional shape of the slider groove is also a dovetail shape; the rodless cylinder is a rodless cylinder working in forward and reverse directions.

[0009] In another specific embodiment of the present invention, the plate curtain type sand carrying mechanism includes a left crossbeam support frame, a right crossbeam support frame, a front crossbeam, a rear crossbeam, a plate curtain transmission active sprocket, a plate curtain transmission driven sprocket, a plate curtain and a plate curtain transmission drive device. The left crossbeam support frame is supported on the floor at a position corresponding to the bottom of the sand feeding hopper, the right crossbeam support frame corresponds to the right side of the left crossbeam support frame and is also supported on the floor, the front crossbeam and the rear crossbeam remain parallel to each other in the length direction, and the left ends of the front and rear crossbeams are supported and fixed on the top of the left support frame, while the right ends of the front and rear crossbeams are supported and fixed on the top of the right crossbeam support frame, the spacing between the opposite sides of the front and rear crossbeams is adapted to the width of the plate curtain, and the number of plate curtain transmission active sprockets are respectively fixed on the front end and The rear end is a pair of plate curtain drive sprocket shafts and is located between the opposite sides of the front and rear beams. The front and rear ends of the plate curtain drive driving sprocket shaft are respectively supported by the right ends of the front and rear beams through bearing seats, and the front end of the plate curtain drive driving sprocket shaft also extends to the front side of the front beam. The number of plate curtain drive driven sprockets is a pair of plate curtain drive driven sprocket shafts that are fixed to the front and rear ends of the plate curtain drive driven sprocket shaft and are located between the opposite sides of the front and rear beams. The front and rear ends of the plate curtain drive driven sprocket shaft are respectively supported by the left ends of the front and rear beams through bearing seats. The plate curtain is located between the front and rear beams, and the right end of the plate curtain is sleeved on a pair of plate curtain drive driving sprockets, and the left end is sleeved on a pair of plate curtain drive driven sprockets. The plate curtain transmission drive device is arranged on the right support frame of the beam and is connected to the plate curtain drive driving sprocket shaft.

[0010] In another specific embodiment of the present invention, the panel curtain is composed of a plurality of curtain pieces, a front chain link, a rear chain link and a chain link hinge shaft. A pair of curtain piece hinged ears 1 and a pair of curtain piece hinged ears 2 are respectively fixed on one side of the curtain piece facing the panel curtain cavity. The pair of curtain piece hinged ears 1 are fixed on one side of the curtain piece, and a hinged ear hole 1 corresponding to each other is opened on the pair of curtain piece hinged ears 1. The pair of curtain piece hinged ears 2 are fixed on the other side of the curtain piece in a state corresponding to the pair of curtain piece hinged ears 1, and the pair of curtain piece hinged ears 2 are fixed on the other side of the curtain piece in a state corresponding to the pair of curtain piece hinged ears 1. Each of the two curtain pieces is provided with two hinged ear holes corresponding to each other in position. The pair of curtain piece hinged ears 2 and the pair of curtain piece hinged ears 1 on each two adjacent curtain pieces are hingedly connected by the chain link hinge shaft. Each of the curtain pieces corresponds to a front chain link and a rear chain link, and the front chain link corresponds to the front end of the curtain piece, and the rear chain link corresponds to the rear end of the curtain piece. A curtain piece sealing overlapped step edge is formed on one side of the length direction of the curtain piece for preventing the coated sand from leaking from the gap between adjacent curtain pieces. The curtain piece sealing overlapped step edge is overlapped with the corresponding The upper surfaces of the edge portions of one side in the length direction of the adjacent curtain pieces coincide with each other, the chain link hinge shaft passes through the chain front link chain piece holes on a pair of chain front link chain pieces constituting the chain front link, the hinge ear hole one, the hinge ear hole two, and the chain rear link chain piece holes on a pair of chain rear link chain pieces constituting the chain rear link, and the chain link hinge shaft front limiting piece is arranged at the front end of the chain link hinge shaft at a position corresponding to the front side of the chain front link to limit the chain link hinge shaft from moving, and the chain link hinge shaft rear limiting piece is arranged at the front end of the chain link hinge shaft at a position corresponding to the front side of the chain rear link The rear side is arranged at the rear end of the chain link hinge shaft to prevent the chain link hinge shaft from moving. The chain link hinge shaft will hinge the front chain link, a pair of chain link hinge ears one, a pair of chain link hinge ears two and the rear chain link corresponding to each curtain piece to form an endless ring structure. The right ends of the front chain and the rear chain formed by the hinge of the front chain link and the rear chain link through the chain link hinge shaft are respectively placed on a pair of panel curtain transmission active sprockets, and the left ends are respectively placed on a pair of panel curtain transmission driven sprockets.

[0011] In another specific embodiment of the present invention, the panel curtain transmission drive device includes a panel curtain drive motor, a panel curtain drive reduction box, a panel curtain drive driving wheel, a panel curtain drive driven wheel and a panel curtain drive transmission belt. The panel curtain drive motor is electrically connected to the electrical control box when in use. The panel curtain drive motor and the panel curtain drive reduction box are driven and supported by the panel curtain drive reduction box together with the panel curtain drive motor on the panel curtain drive reduction box support seat, and the panel curtain drive reduction box support seat is fixed on the support seat fixing plate, and the support seat fixing plate is fixed on the right support frame of the beam, wherein the panel curtain drive reduction box output shaft of the panel curtain drive reduction box faces forward, and the panel curtain drive The driving drive wheel is fixed on the output shaft of the panel drive reduction gearbox, and the panel drive driven wheel is fixed on the front end of the panel drive driving sprocket shaft, one end of the panel drive transmission belt is sleeved on the panel drive driving wheel, and the other end is sleeved on the panel drive driven wheel; the panel drive driving wheel and the panel drive driven wheel are sprockets or pulleys, and the panel drive transmission belt is a chain or belt; a mold signal collector for collecting the signal of the mold to be cast placed on the coated sand on the surface of the panel is provided on the upper left end of the front crossbeam or the rear crossbeam, and the mold signal collector is a photoelectric switch, which is electrically connected to the electrical control box when in use.

[0012] In a more specific embodiment of the present invention, the vibrating mold and sand connecting mechanism includes a coated sand hollow grid frame, a vibration box, a spring and a vibrator, the front and rear sides of the coated sand hollow grid frame are supported on the upper end of the spring by a spring support seat, the left end of the coated sand hollow grid frame is connected with the right end of the front crossbeam and the rear crossbeam and maintains a height difference lower than the right end of the plate curtain, the right end of the coated sand hollow grid frame is connected with the front left side of the casting output mechanism, the vibration box is located below the coated sand hollow grid frame, the left end of the vibration box is fixed to the right side of the right support frame of the crossbeam, and the right end is connected to the lower left side of the lifting bucket cage, and a device for The coated sand that leaks from the coated sand hollow grid frame and enters the vibration box cavity of the vibration box is led out to the vibration box coated sand outlet of the coated sand recycling mechanism. The number of springs is distributed in a group corresponding to the front and rear sides of the vibration box, and each group has at least one pair. The lower end of the spring is positioned on the spring fixed support seat. The spring fixed support seat corresponding to the front side of the vibration box is fixed on the front side wall of the vibration box, and the spring fixed support seat corresponding to the rear side of the vibration box is fixed on the rear side wall of the vibration box. The upper end of the spring is fixed to the spring support seat. The vibration box is electrically controlled by the electrical control box when in use, and the vibrator is arranged on the front side wall or the rear side wall of the vibration box, wherein a coated sand hollow grid dust suction cover is provided above the hollow grid frame corresponding to the coated sand.

[0013] In a further specific embodiment of the present invention, the coated sand recycling mechanism includes a lifting bucket cage, a lifting bucket drive motor, a lifting bucket drive motor sprocket, a lifting bucket drive transmission chain, a lifting bucket belt roller shaft drive sprocket, a lifting bucket belt roller, a lifting bucket belt, a lifting bucket belt transition roller and a coated sand transfer device. The upper end of the lifting bucket cage extends above the floor of the upper floor, and a coated sand output cover is provided on the top of the lifting bucket cage. The coated sand output cover has a coated sand output port, which corresponds to the upper left end of the coated sand transfer device. The lower end of the lifting bucket cage is provided with a coated sand output port. The end support is constructed in the pit on the ground. The bucket driving motor is electrically controlled and connected to the electrical control box when in use. The bucket driving motor is fixed to the left side of the upper end of the bucket cage through the bucket driving motor seat. The bucket driving motor sprocket is fixed to the front end of the bucket driving motor shaft of the bucket driving motor. The bucket belt roller is arranged at the upper end of the bucket cage cavity of the bucket cage. The bucket belt roller front shaft head and the bucket belt roller rear shaft head of the bucket belt roller are rotatably supported on the front side wall and the rear side wall of the bucket cage of the bucket cage respectively, and the bucket belt roller The front axle head extends to the front of the front side wall of the bucket cage, and the bucket belt roller shaft drive sprocket is fixed on the front axle head of the bucket belt roller at a position corresponding to the right side of the bucket drive motor sprocket. One end of the bucket drive transmission chain is sleeved on the bucket drive motor sprocket, and the other end is sleeved on the bucket belt roller shaft drive sprocket. The bucket belt transition roller is arranged at the lower end of the bucket cage cavity of the bucket cage, and the bucket belt transition roller front axle head and the bucket belt transition roller rear axle head of the bucket belt transition roller are rotatably supported on the bucket cage front side wall and the bucket cage rear side respectively. The upper end of the lifting bucket belt is sleeved on the lifting bucket belt roller, and the lower end is sleeved on the lifting bucket belt transition roller. On the lifting bucket belt and on the outside of the lifting bucket belt, coated sand catching buckets are arranged in parallel with each other in a spaced state. The coated sand transfer device is arranged on the floor of the floor at a position corresponding to the position between the coated sand output port and the sand storage bin and is connected to the sand storage bin by a conveyor belt. A lifting bucket cage coated sand inlet is provided on the left side of the lower end of the lifting bucket cage, which protrudes out of the left side wall of the lifting bucket cage, and the vibration box coated sand outlet corresponds to the lifting bucket cage coated sand inlet.

[0014] In yet another specific embodiment of the present invention, a sand storage bin dust hood is provided above the sand storage bin; the right end of the vibrating mold sand receiving mechanism corresponds to the coated sand inlet of the lifting bucket cage, and a coated sand outlet dust removal hood is provided between the coated sand outlet and the left end of the coated sand transfer device. The coated sand from the coated sand outlet passes through the coated sand outlet dust removal hood and then falls to the coated sand transfer device and is sent into the sand storage bin by the conveyor belt of the coated sand transfer device.

[0015] In yet another specific embodiment of the present invention, a bucket belt tensioning roller for tightening the bucket belt is rotatably arranged in an interval state in the height direction of the bucket cage cavity of the bucket cage, and the bucket belt tensioning roller shafts of the bucket belt tensioning rollers are spaced apart and distributed in an S-shaped staggered state, and the front end and the rear end of the bucket belt tensioning roller shafts of the bucket belt tensioning rollers are rotatably supported on the bucket tensioning roller shaft support seats arranged on the front side wall of the bucket cage and the rear side wall of the bucket cage.

[0016] The technical effect of the technical solution provided by the utility model is that: the sand feeding mechanism feeds the coated sand to the plate curtain type sand loading mechanism to form a layer of coated sand with uniform thickness on the plate curtain type sand loading mechanism, and the coated sand plays a good protective role for the mold and the plate curtain placed thereon; after the casting is completed, the plate curtain type sand loading mechanism unloads the coated sand and the mold together with the casting in the mold to the vibrating mold and sand receiving mechanism, and the vibrating mold and sand receiving mechanism leads the coated sand to the coated sand circulation and reuse mechanism, and at the same time leads the mold together with the casting to the casting output mechanism, the coated sand circulation and reuse mechanism transports the coated sand to the sand storage bin and returns the sand to the negative pressure vacuum loader through the sand return pipeline of the sand storage bin, and then leads it to the sand feeding mechanism through the negative pressure vacuum loader through the hose, thereby reflecting the high-efficiency utilization of the coated sand, reducing pollution to the environment, ensuring the quality of the casting, and significantly improving production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of an embodiment of the present invention.

[0018] Figure 2 for Figure 1 The detailed structural diagram of the vibrating mold and sand receiving mechanism, casting output mechanism and coated sand recycling mechanism is shown.

[0019] Figure 3 for Figure 1 The detailed structural diagram of the plate curtain type sand loading mechanism is shown.

[0020] Figure 4 for Figure 1 and Figure 3 Detailed structural diagram of the sand feeding mechanism shown.

[0021] Figure 5 for Figure 3 Detailed structural diagram of the panel curtain shown.

[0022] Figure 6 for Figure 1 and Figure 2 A cross-sectional view of the lifting cage of the coated sand recycling mechanism is shown. DETAILED DESCRIPTION

[0023] In order to enable a clearer understanding of the technical essence and beneficial effects of the present invention, the applicant provides a detailed description in the form of embodiments below. However, the description of the embodiments does not limit the technical solution of the present invention. Any equivalent changes made based on the concept of the present invention that are merely formal and not substantial should be regarded as the scope of the technical connotation disclosed by the present invention.

[0024] In the following description, all concepts related to directionality or orientation, such as up, down, left, right, front and back, are based on the current Figure 1 The position state is used as a reference, and therefore it cannot be understood as a special limitation on the technical solution provided by the present utility model.

[0025] See Figures 1 to 4 , showing a sand feeding mechanism 1 and a plate curtain type sand carrying mechanism 2 for receiving and carrying the coated sand fed by the sand feeding mechanism 1. The sand feeding mechanism 1 is supported on the floor of the casting site when in use. The left end of the plate curtain type sand carrying mechanism 2 extends to the sand feeding mechanism 1, and the right end is also supported on the floor of the casting site; showing a negative pressure vacuum loader 3, which is supported on the above-mentioned floor along with the above-mentioned sand feeding mechanism 1 and is connected to the sand feeding mechanism 1 by a hose 31; showing a vibrating mold-joining sand receiving mechanism 4, a casting output mechanism 5, a coated sand recycling mechanism 6 and a sand storage bin 7. The vibrating mold-joining sand receiving mechanism 4 is arranged between the above-mentioned plate curtain type sand carrying mechanism 2 and the front left side of the casting output mechanism 5, and the casting output mechanism 5 is located to the left of the coated sand recycling mechanism 6 and is supported on the floor. The coated sand recycling mechanism 6 is supported in a longitudinal state in a pit 50 opened in the floor, and the upper end of the coated sand recycling mechanism 6 extends upward to above the upper floor 40 (i.e., extends upward to the second floor room). The sand storage bin 7 is provided on the floor 40 at a position corresponding to the right side of the upper end of the coated sand recycling mechanism 6. The sand storage bin 7 receives the coated sand output by the coated sand recycling mechanism 6 and supplies the received coated sand to the aforementioned negative pressure vacuum loader 3 through the sand return pipeline 71. The lower right end of the aforementioned vibrating mold-joining and sand-receiving mechanism 4 is in communication with the lower end of the aforementioned coated sand recycling mechanism 6 at a position within the aforementioned pit 50.

[0026] The aforementioned sand feeding mechanism 1 comprises a sand feeding hopper support frame 11, a sand feeding hopper 12 and a uniform sand guiding device 13. The sand feeding hopper support frame 11 is supported on the floor of the casting site in the use state. The sand feeding hopper 12 is supported by sand feeding hopper fixing blocks 123 ( Figure 4The sand feeding hopper 12 is provided at the top of the sand feeding hopper support frame 11, the upper part of the sand feeding hopper 12 is configured to be open, and the lower part and along the length direction of the sand feeding hopper 12 are configured to have a sand feeding hopper sand outlet slot 122 for leading out the coated sand in the sand feeding hopper cavity 121 of the sand feeding hopper 12, and the sand uniforming and guiding device 13 is provided on the upper right side in the length direction of the sand feeding hopper 12; the left end of the aforementioned plate curtain type sand loading mechanism 2 extends to the middle part of the height direction of the aforementioned sand feeding hopper support frame 11 at a position corresponding to the bottom of the aforementioned sand feeding hopper 12, and the coated sand from the aforementioned sand feeding hopper sand outlet slot 122 is received (obtained) by the left end of the aforementioned plate curtain type sand loading mechanism 2.

[0027] The sand hopper outlet slot 122 is formed by a 0.5-1.5 cm wide space formed between the lower longitudinal portion of the left side wall of the sand hopper 12 and the lower longitudinal portion of the right side wall. The 0.5-1.5 cm space is a preferred width, preferably 0.6-1.3 cm, more preferably 0.9-1.1 cm, and most preferably 1 cm. In this embodiment, 1 cm is selected.

[0028] Please see the key Figure 4 And combined Figure 3The above-mentioned sand uniforming and guiding device 13 includes a driving plate cylinder 131, a cylinder slider driving plate 132, a sand guide rod reciprocating sliding block guide rail 133, a sand guide rod reciprocating sliding block 134, a sand guide rod 135 and a sand driving and uniforming plate 136. The driving plate cylinder 131 is electrically controlled and connected to the electrical control box when in use. The front and rear ends of the driving plate cylinder 131 are respectively supported and fixed on a driving plate cylinder seat 1312, and the driving plate cylinder seat 1312 is fixed to the upper part of the right side wall of the sand feeding hopper 12 facing away from the above-mentioned sand feeding hopper cavity 121, the cylinder slider driving plate 132 is fixed to the driving plate cylinder slider 1311 of the driving plate cylinder 131, the sand guide rod reciprocating sliding block guide rail 133 corresponds to the upper part of the right side wall of the sand feeding hopper 12 facing the above-mentioned sand feeding hopper cavity 121, and the sand guide rod reciprocating sliding block guide rail 133 The rear end of the sand guide rod 135 is fixed to the upper edge of the rear side wall of the sand feeding hopper 12, and the front end is fixed to the upper edge of the front side wall of the sand feeding hopper 12. The sand guide rod reciprocating sliding block 134 slides with the sand guide rod reciprocating sliding block guide rail 133 through its sliding block groove 1341. The upper end of the sand guide rod 135 is formed with a sliding block fixing plate 1351 bent in the direction of the sand guide rod reciprocating sliding block 134. The sliding block fixing plate 1351 is fixed to the upper side of the sand guide rod reciprocating sliding block 134. The lower end of the sand guide rod 135 extends downward in a longitudinal cantilever state to the position of the sand feeding hopper sand outlet slot 122. The sand driving and sand uniforming plate 136 is fixed to the left side of the sand guide rod 135 in a longitudinal state, and forms a perpendicular relationship with the left side of the sand guide rod 135. The bottom of the sand driving and sand uniforming plate 136 corresponds to the upper part of the sand feeding hopper sand outlet slot 122 when a distance is maintained between it and the sand feeding hopper sand outlet slot 122.

[0029] In this embodiment, the aforementioned driving plate cylinder 131 is a rodless cylinder; the cross-sectional shape of the aforementioned sand guide rod reciprocating slider guide rail 133 is dovetail-shaped, and accordingly, the cross-sectional shape of the aforementioned slider groove 1341 is also dovetail-shaped.

[0030] In this embodiment, the aforementioned rodless cylinder is a rodless cylinder that works in forward and reverse directions.

[0031] Depend on Figure 1The negative pressure vacuum loader 3 shown introduces the recycled coated sand into the sand feeding hopper cavity 121 of the sand feeding hopper 12 through a hose 31 connected to the discharge port of the negative pressure vacuum loader 3, and the sand feeding hopper sand outlet 122 is introduced into the corresponding plate curtain type sand carrying mechanism 2 below which will be described in detail below. The sand guide rod 135 is driven by the sand guide rod 136 to move the slider 134 and the sand guide rod 135 back and forth, and the sand guide rod 135 is used to move the slider 134 and the sand guide rod 135 to move the slider 134 back and forth.

[0032] Please see the key Figure 3The above-mentioned plate curtain type sand loading mechanism 2 includes a left crossbeam support frame 21, a right crossbeam support frame 22, a front crossbeam 23, a rear crossbeam 24, a plate curtain transmission active sprocket 25, a plate curtain transmission driven sprocket 26, a plate curtain 27 and a plate curtain transmission drive device 28. The left crossbeam support frame 21 is supported on the ground at a position corresponding to the bottom of the above-mentioned sand feeding hopper 12. The right crossbeam support frame 22 corresponds to the right side of the left crossbeam support frame 21 and is also supported on the ground. The front crossbeam 23 and the rear crossbeam 24 are mutually supported. In the longitudinal direction, the front and rear are kept parallel, and the left ends of the front crossbeam 23 and the rear crossbeam 24 are supported and fixed on the top of the aforementioned left support frame 21, while the right ends of the front crossbeam 23 and the rear crossbeam 24 are supported and fixed on the top of the aforementioned right crossbeam support frame 22. The spacing between the opposite sides of the front crossbeam 23 and the rear crossbeam 24 is adapted to the width of the panel 27. The number of the panel transmission driving sprockets 25 is respectively fixed at the front and rear ends of the panel transmission driving sprocket shaft 251 and is located on the front crossbeam. 23 and a pair of opposite sides of the rear crossbeam 24, the front and rear ends of the plate curtain transmission active sprocket shaft 251 are respectively supported by the right ends of the front crossbeam 23 and the rear crossbeam 24 for rotation through the bearing seats, and the front end of the plate curtain transmission active sprocket shaft 251 also extends to the front side of the front crossbeam 23, the number of the plate curtain transmission driven sprocket 26 is respectively fixed at the front and rear ends of the plate curtain transmission driven sprocket shaft 261 and is located between the front crossbeam 23 and the rear crossbeam 24 on the opposite side, the The front and rear ends of the panel curtain drive driven sprocket shaft 261 are rotatably supported on the left ends of the front crossbeam 23 and the rear crossbeam 24 through bearing seats respectively. The panel curtain 27 is located between the aforementioned front crossbeam 23 and the rear crossbeam 24, and the right end of the panel curtain 27 is sleeved on a pair of panel curtain drive active sprockets 25, and the left end is sleeved on a pair of panel curtain drive driven sprockets 26. The panel curtain drive drive device 28 is arranged on the aforementioned crossbeam right support frame 22 and is transmission-connected to the aforementioned panel curtain drive active sprocket shaft 251.

[0033] Please see the key Figure 5The aforementioned panel curtain 27 is composed of a plurality of panel curtains 271, a front chain link 272, a rear chain link 273 and a chain link hinge shaft 274. A pair of panel curtain hinge ears 2711 and a pair of panel curtain hinge ears 2712 are fixed on the side of the panel curtain 271 facing the panel curtain 27. The pair of panel curtain hinge ears 2711 are fixed to one side of the panel curtain 271, and the pair of panel curtain hinge ears 2711 are respectively provided with a hinge ear hole 27111 corresponding to each other. The pair of panel curtain hinge ears 2712 are fixed to the other side of the panel curtain 271 in a state corresponding to the pair of panel curtain hinge ears 2711, and the pair of panel curtain hinge ears 2712 are respectively provided with a hinge ear hole 27111 corresponding to each other. Each of the two adjacent curtain pieces 271 is provided with a second hinged ear hole 27121 corresponding to each other. The pair of curtain piece hinged ears 2712 and the pair of curtain piece hinged ears 1 2711 on each of the two adjacent curtain pieces 271 are hingedly connected by the chain link hinge shaft 274. Each of the above-mentioned curtain pieces 271 corresponds to a front chain link 272 and a rear chain link 273, and the front chain link 272 corresponds to the front end of the curtain piece 271, and the rear chain link 273 corresponds to the rear end of the curtain piece 271. A curtain piece sealing overlapped step edge 2713 is formed on one side of the length direction of the curtain piece 271 for preventing the coated sand from leaking from the gap between the adjacent curtain pieces 271. The curtain piece sealing overlapped step edge 2713 The step edge 2713 coincides with the upper surface of one side edge portion of the adjacent curtain sheet 271 in the length direction, and the chain link hinge shaft 274 passes through the chain front link chain plate holes on a pair of chain front link chain plates constituting the chain front link 272, the aforementioned hinge ear hole 1 27111, the hinge ear hole 27121, and the chain rear link chain plate holes on a pair of chain rear link chain plates constituting the chain rear link 273, and the chain link hinge shaft front limiting piece is set at the front end of the chain link hinge shaft 274 at a position corresponding to the front side of the aforementioned chain front link 272 to prevent the chain link hinge shaft 274 from moving, and the chain link hinge shaft rear limiting piece is set at the front end of the chain link hinge shaft 274 at a position corresponding to the front side of the aforementioned chain rear link 2 The rear side of 73 is set at the rear end of the chain link hinge shaft 274 to prevent the chain link hinge shaft 274 from moving. The aforementioned chain link hinge shaft 274 hinges the chain front link 272, a pair of chain hinge ears 1 2711, a pair of chain hinge ears 2 2712 and the chain rear link 273 corresponding to each curtain piece 271 to form an endless ring structure. The right ends of the front chain and the rear chain formed by the hinge of the chain front link 272 and the chain rear link 273 through the aforementioned chain link hinge shaft 274 are respectively placed on a pair of panel curtain transmission active sprockets 25, and the left ends are respectively placed on a pair of panel curtain transmission driven sprockets 26.

[0034] As a preferred solution, in order to prevent the curtain 27 from forming a concave arc in the middle of its length due to the weight of the coated sand, which would cause the upper surface of the entire curtain 27 and the coated sand layer laid thereon to be inconsistent in level, curtain support strips, curtain support rollers or similar components can be rotatably arranged in a spaced manner between the front crossbeam 23 and the rear crossbeam 24 and at a position corresponding to the curtain cavity of the curtain 27. This embodiment chooses the former, that is, the curtain is supported by curtain support strips, so that Figure 1 There are four sets of curtain slat support beam fixing screws for fixing curtain slats. Each set of four curtain slat support beam fixing screws has a pair (i.e., two). For details, see Figure 1 The front side of the front crossbeam 23 shows the screws for fixing the curtain slat support beam. More specifically, curtain slat support beams for fixing the curtain slats are fixed at intervals between the opposite sides of the front crossbeam 23 and the rear crossbeam 24. The spaced curtain slat support beams, together with the front crossbeam 23 and the rear crossbeam 24, form a ladder-like shape consisting of a pair of vertical columns and spaced rungs (i.e., "stepping rods") located between the pair of vertical columns. The aforementioned curtain slats (not shown) are fixed to the middle portion of the upward side of the aforementioned curtain slat support beam in a state parallel to the longitudinal direction of the front crossbeam 23 and the rear crossbeam 24. The curtain slats can be either a single wide one or a pair of relatively narrow ones spaced apart. In short, the number of curtain slats is not limited to the above description. When the curtain 27 moves carrying the coated sand, the mold, and the casting inside the mold, it can be supported by the curtain slats and will not sag or fall.

[0035] See you next time Figure 3 The aforementioned panel curtain transmission drive device 28 includes a panel curtain drive motor 281, a panel curtain drive reduction box 282, a panel curtain drive driving wheel 283, a panel curtain drive driven wheel 284 and a panel curtain drive transmission belt 285. The panel curtain drive motor 281 is electrically connected to the electrical control box when in use. The panel curtain drive motor 281 is matched with the panel curtain drive reduction box 282 for transmission and is supported by the panel curtain drive reduction box 282 together with the panel curtain drive motor 281 on the panel curtain drive reduction box support seat 2821. The panel curtain drive reduction box support seat 2821 It is fixed on the support seat fixing plate 28211, which is fixed on the aforementioned crossbeam right support frame 22, wherein the panel curtain drive reducer output shaft 2822 of the panel curtain drive reducer 282 faces forward, the panel curtain drive driving wheel 283 is fixed on the panel curtain drive reducer output shaft 2822, and the panel curtain drive driven wheel 284 is fixed on the aforementioned panel curtain drive driving sprocket shaft 251, one end of the panel curtain drive belt 285 is sleeved on the panel curtain drive driving wheel 283, and the other end is sleeved on the panel curtain drive driven wheel 284.

[0036] In this embodiment, the aforementioned panel-driving driving pulley 283 and panel-driving driven pulley 284 are sprockets, and accordingly, the panel-driving transmission belt 285 is a chain. The applicant would like to clarify that if only formal, but not substantial, changes are made, such as using pulleys to replace the panel-driving driving and driven pulleys, or using a transmission belt to replace the chain, these should be considered equivalent technical means and still fall within the technical scope of the present invention.

[0037] Preferably, a mold signal collector 29 is installed at the upper left end of the rear crossbeam 24 to collect signals from the mold to be cast, which is placed on the coated sand on the surface of the plate curtain 27. This mold signal collector 29 is a photoelectric switch, which is electrically connected to the electrical control box when in use. If the mold signal collector 29 is installed at the upper left end of the front crossbeam 23, it should be considered an equivalent variation.

[0038] Under the operation of the aforementioned panel curtain drive motor 281, the panel curtain drive motor 281 drives the panel curtain drive reduction box 282, and the panel curtain drive reduction box output shaft 2822 of the panel curtain drive reduction box 282 drives the panel curtain drive active pulley 283, which drives the panel curtain drive driven pulley 284 through the panel curtain drive transmission belt 285, and the panel curtain drive driven pulley 284 drives the panel curtain drive active sprocket 25, so that the aforementioned front chain and rear chain, which are respectively formed by the front chain link 272 and the rear chain link 273 of the chain through circular connection (through the chain link hinge shaft), one end of which is sleeved on a pair of panel curtain drive active sprockets 25 and the other end of which is sleeved on a pair of panel curtain drive driven sprockets 26, move. The synchronous movement of the front chain and the rear chain causes the panel curtain 27 to form a transmission plane that moves (i.e., "moves") over and over again.

[0039] See Figure 1 And combined Figures 3 to 5 Since the coating sand formed by the sand feeding hopper 12 of the sand feeding mechanism 1 is fed from the upper part of the plate curtain 27, the sand layer 10 (depending on the mold for casting different products) is required by the process, the online operator can cast the casting to be cast, such as the blade of the cyclone structure used in the dust removal equipment of the steel industry, etc. ( Figure 1 When the position of the mold 20 on the sand layer 10 corresponds to the mold signal collector 29, the mold signal collector 29 feeds back the signal to the electrical control box, which sends a signal to the curtain drive motor 281 to stop working. At this time, the plate curtain drive motor 281 corresponding to the upper part of the mold 20 and suspended by the plate curtain drive motor 281 is turned off. Figure 1Molten steel (hot metal) from the illustrated ladle 30 is poured into the mold 20. Since the timer (delay time) for the curtain drive motor 281 to stop operating is set rhythmically according to process requirements and depends on the size of the casting, once the casting is complete, i.e., once the delay time has expired, the curtain drive motor 281 starts operating again. Once the mold 20, placed on the sand bed 10 by the worker, reaches a point where the mold signal collector 29 can detect a signal, the above process repeats, with the ladle 30 pouring molten steel into the mold.

[0040] In the above process, the plate curtain 27 carries the sand layer 10 together with the mold 20 that has completed the casting (the mold 20 has the completed casting) and turns from the right end of the plate curtain 27 at the position of the plate curtain drive sprocket 25. The sand layer 10 on the plate curtain 27 and the mold 20 with the casting automatically fall to the Figure 1 and Figure 2 The vibrating mold-joining and sand-receiving mechanism 4 shown in FIG. The coated sand that falls onto the vibrating mold-joining and sand-receiving mechanism 4 leaks down and is automatically supplied to the coated sand recycling mechanism 6 located to the right of the vibrating mold-joining and sand-receiving mechanism 4. The sand is then supplied to the aforementioned negative pressure vacuum loader 3 via a sand storage bin 7 located above and to the right of the coated sand recycling mechanism 6 through a sand return line 71. The aforementioned mold 20 that falls onto the vibrating mold-joining and sand-receiving mechanism 4 automatically arrives at the casting delivery mechanism 5 located between the vibrating mold-joining and sand-receiving mechanism 4 and the coated sand recycling mechanism 6. The casting delivery mechanism 5 delivers the molded product and releases it, and the mold 20 is then recycled. Since the structure and operating principle of the negative pressure vacuum loader 3 are well-known technologies widely available in the market, for example, the YE3 powder and granular material negative pressure conveying system manufactured by Jianyi Intelligent Equipment Co., Ltd. in Xinxiang City, Henan Province, China, which was sold on the market prior to the filing of this application, can preferably be used, but not limited to, and therefore the applicant will not describe it in detail.

[0041] Depend on Figure 1 and Figure 2 As shown, the vibrating mold and sand receiving mechanism 4 corresponding to the top of the pit 50 includes a coated sand hollow grid frame 41, a vibration box 42, a spring 43 and a vibrator 44. The front and rear sides of the coated sand hollow grid frame 41 are supported on the upper end of the spring 43 through a spring support seat 411. The left end of the coated sand hollow grid frame 41 is connected to the aforementioned front crossbeam 23 and rear crossbeam 24 ( Figure 3The right end of the vibrating box 42 is connected with the right end of the aforementioned plate curtain 27 and maintains a height difference lower than the plate curtain 27. The right end of the coated sand hollow grid frame 41 is connected with the left side of the front end of the aforementioned casting output mechanism 5. The vibration box 42 is located below the coated sand hollow grid frame 41. The left end of the vibration box 42 is fixed to the right side of the aforementioned crossbeam right support frame 22, and the right end is connected to the left side of the lower end of the lifting bucket cage 61. At the right end of the vibration box 42 and at a position corresponding to the left side below the aforementioned coated sand recycling mechanism 6, a device is formed for leading the coated sand that leaks (flows) from the coated sand hollow grid frame 41 and enters the vibration box cavity 421 of the vibration box 42 to the coated sand recycling machine The vibrating box coated sand outlet 422 of structure 6 has a number of springs 43, which are spaced apart in groups corresponding to the front and rear sides of the vibrating box 42, and each group has at least one pair. The lower end of the spring 43 is positioned on a spring fixed support seat 431. The spring fixed support seat 431 corresponding to the front side of the vibrating box 42 is fixed to the front side wall (i.e., the "front box wall") of the vibrating box 42, while the spring fixed support seat 431 corresponding to the rear side of the vibrating box 42 is fixed to the rear side wall (i.e., the "rear box wall") of the vibrating box 42. The upper end of the spring 43 is fixed to the aforementioned spring support seat 411. The vibrator 44, which is electrically connected to the electrical control box, is arranged on the front side wall or the rear side wall of the vibrating box 42. Among them, a coated sand hollow grille dust cover 70 is provided above the hollow grille frame 41 corresponding to the coated sand.

[0042] See Figure 6 And combined Figure 1 and Figure 2The aforementioned coated sand recycling mechanism 6 includes a lifting bucket cage 61, a lifting bucket drive motor 62, a lifting bucket drive motor sprocket 63, a lifting bucket drive transmission chain 64, a lifting bucket belt roller shaft drive sprocket 65, a lifting bucket belt roller 66, a lifting bucket belt 67, a lifting bucket belt transition roller 68 and a coated sand transfer device 69. The upper end of the lifting bucket cage 61 extends above the aforementioned upper floor 40, and a coated sand output cover 611 is provided on the top of the lifting bucket cage 61. The coated sand output cover 611 has a coated sand output port 6111, and the coated sand output port 6111 corresponds to the upper left end of the coated sand transfer device 69. The lower end support structure of the lifting bucket cage 61 In the aforementioned pit 50 built on the ground, the bucket drive motor 62 is electrically controlled and connected to the electrical control box when in use. The bucket drive motor 62 is fixed to the upper left side of the bucket cage 61 through the bucket drive motor seat 621. The bucket drive motor sprocket 63 is fixed to the front end of the bucket drive motor shaft 622 of the bucket drive motor 62. The bucket belt roller 66 is arranged at the upper end of the bucket cage cavity of the bucket cage 61. The bucket belt roller front shaft head 661 and the bucket belt roller rear shaft head of the bucket belt roller 66 are rotatably supported on the bucket cage front side wall and the bucket cage rear side wall of the bucket cage 61 respectively, and the bucket belt roller front shaft head 661 is fixed to the front left side wall of the bucket cage 61. 61 extends to the front of the front side wall of the bucket cage, and the bucket belt roller shaft driving sprocket 65 is fixed on the aforementioned bucket belt roller front shaft head 661 at a position corresponding to the right side of the bucket driving motor sprocket 63. One end of the bucket driving transmission chain 64 is sleeved on the bucket driving motor sprocket 63, and the other end is sleeved on the bucket belt roller shaft driving sprocket 65. The bucket belt transition roller 68 is arranged at the lower end of the bucket cage cavity of the bucket cage 61. The bucket belt transition roller front shaft head 681 and the bucket belt transition roller rear shaft head of the bucket belt transition roller 68 are respectively rotatably supported on the bucket cage front side wall and the bucket cage rear side wall of the bucket cage 61. The upper end of the belt 67 is sleeved on the lifting bucket belt roller 66, and the lower end is sleeved on the lifting bucket belt transition roller 68. On the lifting bucket belt 67 and on the outside of the lifting bucket belt 67, coated sand retrieval buckets 671 are arranged in parallel with each other in a spaced state. The coated sand transfer device 69 is arranged on the aforementioned floor 40 at a position corresponding to between the aforementioned coated sand output port 6111 and the sand storage bin 7 and is connected to the sand storage bin 7 by a conveyor belt. Among them, a lifting bucket cage coated sand inlet 612 is provided on the left side of the lower end of the aforementioned lifting bucket cage 61, which protrudes from the left side wall of the lifting bucket cage 61, and the aforementioned vibration box coated sand outlet 422 corresponds to the lifting bucket cage coated sand inlet 612.

[0043] A sand storage bin dust hood 72 is provided above the aforementioned sand storage bin 7; the right end of the aforementioned vibrating mold sand receiving mechanism 4 corresponds to the aforementioned lifting bucket cage coated sand inlet 612, and a coated sand outlet dust removal hood 60 is provided between the aforementioned coated sand outlet 6111 and the left end of the aforementioned coated sand transfer device 69. The coated sand from the coated sand outlet 6111 passes through the coated sand outlet dust removal hood 60 and then falls to the aforementioned coated sand transfer device 69 and is sent into the aforementioned sand storage bin 7 by the conveyor belt of the coated sand transfer device 69.

[0044] A bucket belt tensioning roller 613 for tensioning the bucket belt 67 is rotatably arranged in an interval state in the height direction of the bucket cage cavity of the above-mentioned bucket cage 61. The bucket belt tensioning roller shaft 6131 of the bucket belt tensioning roller 613 is distributed in an S-shaped staggered state and the front end and the rear end of the bucket belt tensioning roller shaft 6131 of the bucket belt tensioning roller 613 are rotatably supported on the bucket tensioning roller shaft support seat 61311 arranged on the front side wall and the rear side wall of the bucket cage 61.

[0045] Depend on Figure 1 The mold 20 shown in the figure that has completed casting and the casting automatically fall from the right end of the plate curtain 27 onto the hollow grid frame 41 of coated sand. Under the vibration of the vibrator 44, the hollow grid frame 41 of coated sand vibrates the coated sand off the mold 20 and its casting and flows downward into the vibration box cavity 421, and is introduced into the coated sand inlet 612 of the lifting bucket cage through the coated sand outlet 422 of the vibration box. Under the operation of the bucket driving motor 62 of the coated sand recycling mechanism 6, the bucket driving motor shaft 622 drives the bucket driving motor sprocket 63, which drives the bucket belt roller shaft driving sprocket 65 through the bucket driving transmission chain 64, and the bucket belt roller shaft driving sprocket 65 drives the bucket belt roller 66, and the bucket belt roller 66 drives the bucket belt 67. In the process of the bucket belt 67 moving around the bucket belt roller 66 and the bucket belt transition roller 68, the coated sand taking bucket 671 (that is, the "coated sand extraction bucket") extracts the coated sand introduced from the coated sand inlet 612 of the bucket cage and transports it to the coated sand transfer device 69 through the coated sand output port 6111 of the coated sand output cover 611 (also called the "coated sand output box") through the aforementioned coated sand output port dust removal cover 60, and is transported by the transfer conveyor belt of the coated sand transfer device 69 to the coated sand conveyor belt Figure 1 The sand storage bin 7 shown is then transported to the aforementioned negative pressure vacuum loader 3 through the sand return pipeline 71, and then supplied to the sand feeding hopper 12 of the sand feeding mechanism 1 by the aforementioned hose 31, and fed to the plate curtain 27 of the plate curtain type sand loading mechanism 2 by the sand feeding hopper sand outlet 122, so that the coated sand is recycled.

[0046] See you next time Figure 2 And combined Figure 1In the above process, after the coated sand is shaken off the coated sand hollow grid frame 41, the mold and the casting automatically fall from the right end of the coated sand hollow grid frame 41 to the casting output mechanism 5 (because the coated sand hollow grid frame 41 is slightly inclined toward the direction of the casting output mechanism 5). The casting output mechanism 5 and the right end of the coated sand hollow grid frame 41 maintain a height difference lower than the coated sand hollow grid frame 41. The front end of the casting output mechanism 5 is supported by the front bracket between the right end of the coated sand hollow grid frame 41 and the left side of the lifting bucket cage 61, while the rear end is supported on the floor by the rear bracket. Since the structure and working principle of the casting output mechanism 5 are basically the same as those of the aforementioned plate curtain type sand carrying mechanism 2, the applicant will not elaborate on them. According to professional common sense, the mold output by the casting output mechanism 5 is reused after the casting is removed, and the casting is sent to the subsequent processing step. In addition, Figure 1 Also shown is a dust extraction hood 80 corresponding to the upper side of the casting discharging mechanism 5 .

[0047] In summary, the technical solution provided by the present utility model makes up for the shortcomings of the existing technology, successfully completes the invention task, and faithfully realizes the technical effects described by the applicant in the technical effect column above.

Claims

1. A device for circulating coated sand for casting, characterized by: The invention comprises a sand feeding mechanism (1) and a plate curtain type sand carrying mechanism (2) for receiving and carrying the coated sand fed by the sand feeding mechanism (1); the sand feeding mechanism (1) is supported on the floor of the casting site when in use; the left end of the plate curtain type sand carrying mechanism (2) extends to the sand feeding mechanism (1), and the right end is also supported on the floor of the casting site; a negative pressure vacuum loader (3), the negative pressure vacuum loader (3) is supported on the floor along with the sand feeding mechanism (1) and is communicated with the sand feeding mechanism (1) by a hose (31); a vibration type mold connecting sand receiving mechanism (4), a casting conveying mechanism (5), a casting conveying mechanism (6), a casting conveying mechanism (7), a casting conveying mechanism (8), a casting conveying mechanism (9), a casting conveying mechanism (11), a casting conveying mechanism (12), a casting conveying mechanism (13), a casting conveying mechanism (14), a casting conveying mechanism (15), a casting conveying mechanism (16), a casting conveying mechanism (17), a casting conveying mechanism (18), a casting conveying mechanism (19), a casting conveying mechanism (2), a casting conveying mechanism (2), a casting conveying mechanism (1 ... The present invention relates to a casting part discharging mechanism (5), a coated sand recycling mechanism (6) and a sand storage bin (7), wherein the vibrating mold-connecting sand receiving mechanism (4) is arranged between the plate curtain type sand carrying mechanism (2) and the left side of the front end of the casting part discharging mechanism (5), and the casting part discharging mechanism (5) is located on the left side of the coated sand recycling mechanism (6) and supported on the floor, and the coated sand recycling mechanism (6) is supported in a longitudinal state in a pit (50) opened on the floor, and the upper end of the coated sand recycling mechanism (6) extends upward to above the upper floor (40), and the sand storage bin (7) is provided with a plurality of mold-connecting sand receiving mechanisms (5). A position corresponding to the right side of the upper end of the coated sand recycling mechanism (6) is set on the floor (40), and the coated sand output by the coated sand recycling mechanism (6) is received by the sand storage bin (7) and the received coated sand is supplied to the negative pressure vacuum loader (3) through the sand return pipeline (71), wherein the position below the right end of the vibrating mold and sand receiving mechanism (4) in the pit (50) is connected to the lower end of the coated sand recycling mechanism (6).

2. The device for circulating coated sand for casting according to claim 1, characterized in that: The sand feeding mechanism (1) comprises a sand feeding hopper support frame (11), a sand feeding hopper (12) and a uniform sand guiding device (13). The sand feeding hopper support frame (11) is supported on the floor of the casting site in a use state. The sand feeding hopper (12) is arranged on the top of the sand feeding hopper support frame (11) through a sand feeding hopper fixing block (123). The upper part of the sand feeding hopper (12) is configured to be open, and the lower part and along the length direction of the sand feeding hopper (12) are configured to have a sand feeding hopper sand outlet chute (122) for leading out the coated sand in the sand feeding hopper cavity (121) of the sand feeding hopper (12). The uniform sand guiding device (13) is arranged on the sand feeding hopper (12). ) in the upper right part in the longitudinal direction; the left end of the plate curtain type sand carrying mechanism (2) extends to the middle part in the height direction of the sand feeding hopper support frame (11) at a position corresponding to the lower part of the sand feeding hopper (12), and the coated sand from the sand feeding hopper sand outlet slot (122) is received by the left end of the plate curtain type sand carrying mechanism (2); the sand feeding hopper sand outlet slot (122) is formed by the lower part of the length direction of the left side wall of the sand feeding hopper of the sand feeding hopper (12) and is inclined toward the direction of the right side wall of the sand feeding hopper of the sand feeding hopper (12), and the space with a width of 0.5-1.5 cm is formed between the lower part of the length direction of the right side wall of the sand feeding hopper.

3. The device for circulating coated sand for casting according to claim 2, characterized in that: The sand-distributing and sand-distributing device (13) comprises a driving plate cylinder (131), a cylinder slider driving plate (132), a sand-distributing rod reciprocating slider guide rail (133), a sand-distributing rod reciprocating slider (134), a sand-distributing rod (135), and a sand-distributing and sand-distributing plate (136). The front end and the rear end of the driving plate cylinder (131) are each supported and fixed on a driving plate cylinder seat (1312), and the driving plate cylinder seat (1312) is fixed on the right side wall of the sand feeding hopper (12) facing away from the sand feeding hopper cavity (121). At the upper part of one side, the cylinder slider driving plate (132) is fixed to the driving plate cylinder slider (1311) of the driving plate cylinder (131), and the sand guide rod reciprocating slider guide rail (133) corresponds to the right side wall of the sand feeding hopper of the sand feeding hopper (12) toward the upper part of one side of the sand feeding hopper cavity (121), and the rear end of the sand guide rod reciprocating slider guide rail (133) is fixed to the upper edge of the rear side wall of the sand feeding hopper (12), and the front end is fixed to the upper edge of the front side wall of the sand feeding hopper (12), and the sand guide rod reciprocating slider (134) is fixed through its sliding The block groove (1341) is slidably matched with the guide rail (133) of the reciprocating slider of the sand guide rod. The upper end of the sand guide rod (135) is formed with a slider fixing plate (1351) bent toward the direction of the reciprocating slider (134) of the sand guide rod. The slider fixing plate (1351) is fixed to the upper side of the reciprocating slider (134) of the sand guide rod. The lower end of the sand guide rod (135) extends downward in a longitudinal cantilever state to the position of the sand feeding hopper sand outlet slot (122). The sand driving and sand leveling plate (136) is longitudinally connected to the sand guide rod (135). ) is fixed to the left side and forms a vertical relationship with the left side of the sand guide rod (135). The bottom of the sand driving and sand leveling plate (136) corresponds to the upper side of the sand feeding hopper sand outlet slot (122) while maintaining a distance between the bottom and the sand feeding hopper sand outlet slot (122); the driving plate action cylinder (131) is a rodless cylinder; the cross-sectional shape of the reciprocating slider guide rail (133) of the sand guide rod is dovetail-shaped, and the cross-sectional shape of the slider groove (1341) is also dovetail-shaped; the rodless cylinder is a rodless cylinder that works in both forward and reverse directions.

4. The device for circulating coated sand for casting according to claim 2, characterized in that: The plate curtain type sand carrying mechanism (2) comprises a left crossbeam support frame (21), a right crossbeam support frame (22), a front crossbeam (23), a rear crossbeam (24), a plate curtain transmission active sprocket (25), a plate curtain transmission driven sprocket (26), a plate curtain (27) and a plate curtain transmission driving device (28), wherein the left crossbeam support frame (21) is supported on the ground at a position corresponding to the lower side of the sand feeding hopper (12), the right crossbeam support frame (22) corresponds to the right side of the left crossbeam support frame (21) and is also supported on the ground, the front crossbeam (23) and the rear crossbeam ( 24) are kept parallel to each other in the longitudinal direction, and the left ends of the front cross beam (23) and the rear cross beam (24) are supported and fixed on the top of the left support frame (21), and the right ends of the front cross beam (23) and the rear cross beam (24) are supported and fixed on the top of the right cross beam support frame (22), and the spacing between the opposite sides of the front cross beam (23) and the rear cross beam (24) is adapted to the width of the plate curtain (27), and the number of the plate curtain transmission driving sprocket (25) is respectively fixed on the front end and the rear end of the plate curtain transmission driving sprocket shaft (251) and is located at the front A pair of plate curtain drive sprockets (26) are respectively fixed at the front and rear ends of the plate curtain drive driven sprocket shaft (261) and located between the opposite sides of the front cross beam (23) and the rear cross beam (24), the front end and rear end of the plate curtain drive driven sprocket shaft (251) are respectively supported by bearing seats on the right ends of the front cross beam (23) and the rear cross beam (24), and the front end of the plate curtain drive driven sprocket shaft (251) also extends to the front side of the front cross beam (23), and the number of plate curtain drive driven sprockets (26) is a pair of plate curtain drive driven sprockets (26) respectively fixed at the front and rear ends of the plate curtain drive driven sprocket shaft (261) and located between the opposite sides of the front cross beam (23) and the rear cross beam (24), The front and rear ends of the panel curtain transmission driven sprocket shaft (261) are rotatably supported on the left ends of the front crossbeam (23) and the rear crossbeam (24) respectively through bearing seats. The panel curtain (27) is located between the front crossbeam (23) and the rear crossbeam (24), and the right end of the panel curtain (27) is sleeved on a pair of panel curtain transmission active sprockets (25), while the left end is sleeved on a pair of panel curtain transmission driven sprockets (26). The panel curtain transmission drive device (28) is arranged on the right support frame (22) of the crossbeam and is transmission-connected to the panel curtain transmission active sprocket shaft (251).

5. The device for circulating coated sand for casting according to claim 4, characterized in that: The plate curtain (27) is composed of a plurality of curtain pieces (271), a front chain link (272), a rear chain link (273) and a chain link hinge shaft (274). A pair of curtain piece hinge ears (2711) and a pair of curtain piece hinge ears (2712) are fixed on one side of the curtain piece (271) facing the plate curtain cavity of the plate curtain (27). The pair of curtain piece hinge ears (2711) are fixed on one side of the curtain piece (271), and a hinge ear hole (27111) corresponding to each other is opened on the pair of curtain piece hinge ears (2711). The pair of curtain piece hinge ears (2712) are fixed on the other side of the curtain piece (271) in a state corresponding to the pair of curtain piece hinge ears (2711), and the pair of curtain piece hinge ears (2712) are fixed on the other side of the curtain piece (271) in a state corresponding to the pair of curtain piece hinge ears (2711). 712) are each provided with two hinged ear holes (27121) at positions corresponding to each other, and the pair of curtain piece hinged ears (2712) and the pair of curtain piece hinged ears (2711) on each two adjacent curtain pieces (271) are hingedly connected by the chain link hinge shaft (274), and each curtain piece (271) corresponds to a front chain link (272) and a rear chain link (273), and the front chain link (272) corresponds to the front end of the curtain piece (271), and the rear chain link (273) corresponds to the rear end of the curtain piece (271), and a curtain piece sealing overlapped step edge (2713) is formed on one side of the curtain piece (271) in the longitudinal direction for preventing the coated sand from leaking from the gap between adjacent curtain pieces (271) The curtain sheet sealing overlapping step edge (2713) coincides with the upper surface of the edge portion of one side of the length direction of the adjacent curtain sheet (271), the chain link hinge shaft (274) passes through the chain front link chain plate holes on a pair of chain front link chain plates constituting the chain front link (272), the hinge ear hole 1 (27111), the hinge ear hole 2 (27121) and the chain rear link chain plate holes on a pair of chain rear link chain plates constituting the chain rear link (273), and the chain link hinge shaft front limiting piece is set at the front end of the chain link hinge shaft (274) at a position corresponding to the front side of the chain front link (272) to prevent the chain link hinge shaft (274) from moving, and the chain link hinge shaft rear limiting piece is set at the front end of the chain link hinge shaft (274) at a position corresponding to the front side of the chain front link (272) to prevent the chain link hinge shaft (274) from moving, and the chain link hinge shaft rear limiting piece is set at the front end of the chain link hinge shaft (274) at a position corresponding to the front side of the chain rear link (27 3) is arranged at the rear end of the chain link hinge shaft (274) to prevent the chain link hinge shaft (274) from moving. The chain link hinge shaft (274) hinges the front chain link (272) of the chain corresponding to each curtain piece (271), a pair of chain piece hinge ears 1 (2711), a pair of chain piece hinge ears 2 (2712) and the rear chain link (273) of the chain to form an endless ring structure for the panel curtain (27). The right ends of the front chain and the rear chain formed by the front chain link (272) and the rear chain link (273) of the chain hinged by the chain link hinge shaft (274) are respectively placed on a pair of panel curtain transmission active sprockets (25), and the left ends are respectively placed on a pair of panel curtain transmission driven sprockets (26).

6. The device for circulating coated sand for casting according to claim 4, characterized in that: The panel curtain transmission drive device (28) includes a panel curtain drive motor (281), a panel curtain drive reduction box (282), a panel curtain drive active wheel (283), a panel curtain drive driven wheel (284) and a panel curtain drive transmission belt (285). The panel curtain drive motor (281) is electrically connected to the electrical control box in the use state. The panel curtain drive motor (281) is in transmission cooperation with the panel curtain drive reduction box (282) and is supported by the panel curtain drive reduction box (282) together with the panel curtain drive motor (281) on the panel curtain drive reduction box support seat (2821). The panel curtain drive reduction box support seat (2821) is fixed on the support seat fixing plate (28211), and the support seat fixing plate (28211) is fixed on the right support frame (22) of the crossbeam, wherein the panel curtain drive reduction box output shaft (2822) of the panel curtain drive reduction box (282) faces forward. The plate curtain drive active wheel (283) is fixed on the plate curtain drive reduction box output shaft (2822), and the plate curtain drive driven wheel (284) is fixed on the front end of the plate curtain drive active sprocket shaft (251), one end of the plate curtain drive transmission belt (285) is sleeved on the plate curtain drive active wheel (283), and the other end is sleeved on the plate curtain drive driven wheel (284); the plate curtain drive active wheel (283) and the plate curtain drive driven wheel (284) are sprockets or pulleys, and the plate curtain drive transmission belt (285) is a chain or belt; a mold signal collector (29) is provided on the upper left end of the front crossbeam (23) or the rear crossbeam (24) for collecting the signal of the mold to be cast placed on the coated sand on the surface of the plate curtain (27), and the mold signal collector (29) is a photoelectric switch, which is electrically connected to the electrical control box when in use.

7. The device for circulating coated sand for casting according to claim 4, characterized in that: The vibrating mold-joining and sand-joining mechanism (4) comprises a coated sand hollow grid frame (41), a vibration box (42), a spring (43) and a vibrator (44). The front and rear sides of the coated sand hollow grid frame (41) are supported on the upper end of the spring (43) through a spring support seat (411). The left end of the coated sand hollow grid frame (41) is connected to the right end of the front crossbeam (23) and the rear crossbeam (24), and a height difference is maintained between the left end of the coated sand hollow grid frame (41) and the right end of the plate curtain (27) and the plate curtain (27). The right end of the coated sand hollow grid frame (41) is connected to the left side of the front end of the casting output mechanism (5), and a vibration box (42) is located below the coated sand hollow grid frame (41). The left end of the vibration box (42) is fixed to the right side of the right support frame (22) of the crossbeam, and the right end is connected to the left side of the lower end of the lifting bucket cage (61). At the right end of the vibration box (42) and at a position corresponding to the left side of the lower end of the coated sand recycling mechanism (6), a device for transferring the coated sand hollow grid frame (41) to the casting output mechanism (5) is formed. ) and the coated sand that has leaked out and entered the vibration box cavity (421) of the vibration box (42) is led out to the vibration box coated sand outlet (422) of the coated sand recycling mechanism (6). The number of springs (43) is arranged in a group at intervals on the front side and the rear side of the vibration box (42), and each group has at least one pair. The lower end of the spring (43) is positioned on the spring fixed support seat (431). The spring fixed support seat (431) corresponding to the front side of the vibration box (42) is fixed on the vibration box (42). On the front side wall, a spring fixed support seat (431) corresponding to the rear side of the vibration box (42) is fixed on the rear side wall of the vibration box (42), the upper end of the spring (43) is fixed to the spring support seat (411), the vibration box (42) is electrically controlled and connected to the electrical control box when in use, and the vibrator (44) is set on the front side wall or the rear side wall of the vibration box (42), wherein a coated sand hollow grille dust cover (70) is provided above the coated sand hollow grille frame (41).

8. The device for circulating coated sand for casting according to claim 7, characterized in that: The coated sand recycling mechanism (6) comprises a lifting bucket cage (61), a lifting bucket driving motor (62), a lifting bucket driving motor sprocket (63), a lifting bucket driving transmission chain (64), a lifting bucket belt roller shaft driving sprocket (65), a lifting bucket belt roller (66), a lifting bucket belt (67), a lifting bucket belt transition roller (68) and a coated sand transfer device (69). The upper end of the lifting bucket cage (61) extends above the upper floor (40), and a coated sand output cover (611) is provided on the top of the lifting bucket cage (61). The coated sand output cover (611) has a coated sand output port (6111), and the coated sand output port (6111) corresponds to the upper left of the coated sand transfer device (69). The lower end support of the bucket cage (61) is constructed in the pit (50) on the ground. The bucket driving motor (62) is electrically controlled and connected to the electrical control box in the use state. The bucket driving motor (62) is fixed to the left side of the upper end of the bucket cage (61) through the bucket driving motor seat (621). The bucket driving motor sprocket (63) is fixed to the front end of the bucket driving motor shaft (622) of the bucket driving motor (62). The bucket belt roller (66) is arranged at the upper end of the bucket cage cavity of the bucket cage (61). The bucket belt roller front shaft head (661) and the bucket belt roller rear shaft head of the bucket belt roller (66) are respectively rotatably supported on the bucket cage front side wall and the bucket cage rear side wall of the bucket cage (61). The bucket cage is provided with a lifting bucket belt roller front shaft head (661) extending to the front side wall of the lifting bucket cage, and the bucket belt roller shaft driving sprocket (65) is fixed on the bucket belt roller front shaft head (661) at a position corresponding to the right side of the bucket driving motor sprocket (63), and one end of the bucket driving transmission chain (64) is sleeved on the bucket driving motor sprocket (63), and the other end is sleeved on the bucket belt roller shaft driving sprocket (65), and the bucket belt transition roller (68) is arranged at the lower end of the bucket cage cavity of the lifting bucket cage (61), and the bucket belt transition roller front shaft head (681) and the bucket belt transition roller rear shaft head of the bucket belt transition roller (68) are respectively rotatably supported on the lifting bucket cage (61). ) on the front side wall and the rear side wall of the lifting bucket cage, the upper end of the lifting bucket belt (67) is sleeved on the lifting bucket belt roller (66), and the lower end is sleeved on the lifting bucket belt transition roller (68), and coated sand retrieving buckets (671) are arranged on the lifting bucket belt (67) and on the outside of the lifting bucket belt (67) in a spaced state and in parallel with each other, and the coated sand transfer device (69) is arranged on the floor (40) at a position corresponding to the coated sand output port (6111) and the sand storage bin (7) and is connected to the sand storage bin (7) by a conveyor belt, wherein a lifting bucket cage coated sand inlet (612) is provided on the left side of the lower end of the lifting bucket cage (61) and protrudes from the left side wall of the lifting bucket cage (61),The vibrating box coated sand outlet (422) corresponds to the lifting bucket cage coated sand inlet (612).

9. The device for circulating coated sand for casting according to claim 8, characterized in that: A sand storage bin dust collection hood (72) is provided above the sand storage bin (7); the right end of the vibrating mold sand receiving mechanism (4) corresponds to the coated sand inlet (612) of the lifting bucket cage, and a coated sand outlet dust collection hood (60) is provided between the coated sand outlet (6111) and the left end of the coated sand transfer device (69); the coated sand from the coated sand outlet (6111) passes through the coated sand outlet dust collection hood (60) and then falls to the coated sand transfer device (69) and is sent into the sand storage bin (7) by the conveyor belt of the coated sand transfer device (69).

10. The device for circulating coated sand for casting according to claim 8, characterized in that: A bucket belt tensioning roller (613) for tightening the bucket belt (67) is rotatably arranged in an interval state in the height direction of the bucket cage cavity of the bucket cage (61), wherein the bucket belt tensioning roller shaft (6131) of the bucket belt tensioning roller (613) is spaced apart in an S-shaped staggered state, and the front end and the rear end of the bucket belt tensioning roller shaft (6131) of the bucket belt tensioning roller (613) are rotatably supported on the bucket tensioning roller shaft support seat (61311) provided on the front side wall and the rear side wall of the bucket cage (61).

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