Sand hopper feeding device

Abstract

The application discloses a sand hopper feeding device and belongs to the field of casting equipment. The sand hopper feeding device comprises a core shooter, a sand storage assembly, a suspension conveying assembly and a breaking assembly. The sand storage assembly comprises a sand storage part arranged above the sand hopper, and a sand guide part is arranged on one side of the sand storage hopper. The suspension conveying assembly is arranged on one side of the sand storage assembly. The breaking assembly comprises a closing part at the opening of the sand storage hopper, guide parts arranged on the two sides of the sand storage hopper, linkage parts arranged on the two sides of the sand storage hopper, and a giving part arranged on the bottom surface of the large hopper cover. The sand hopper feeding device can automatically break the ton bag without manual operation through the closing part composed of the large hopper cover and the small hopper cover, the cooperation of the guide parts, the linkage parts and the giving part. The suspension conveying assembly automatically sends the ton bag to the upper side of the sand storage hopper. The sand storage assembly temporarily stores sand, and the sand guide part assists sand conveying to the sand storage hopper of the core shooter. The sand supply is stable in combination with sand quantity monitoring, the problems of insufficient or excessive sand quantity are avoided, the feeding automation and the sand core quality are improved, and the dependence on manual operation is reduced.

Description

Technical Field

[0001] This invention relates to the field of casting equipment technology, and in particular to a sand hopper feeding device. Background Technology

[0002] In the core preparation process of a core shooter, the sand hopper is used to store core sand and is a key sand supply component in the sand shooting stage. Currently, the common method for feeding the sand hopper of a core shooter is to use ton bags: during operation, the bottom of the ton bag needs to be manually cut open so that the sand inside falls directly into the sand hopper of the core shooter. Since the sand hopper of the core shooter is usually installed in the upper part of the equipment to adapt to the height requirements of the sand shooting device, manual feeding requires the use of climbing tools (such as ladders or platforms) or the cooperation of multiple people to move the ton bag to the top of the sand hopper before cutting and emptying it.

[0003] The existing feeding methods have several drawbacks: Firstly, the manual tearing of the ton bags has low automation, relying entirely on manual experience to judge the tearing position and force. If the tear is too small, it can easily lead to poor core sand discharge and blockage; if the tear is too large, the core sand may splash due to excessive discharge speed, resulting in material waste. Secondly, the sand hopper of the core shooter is positioned high, making it difficult to achieve a continuous and stable supply of sand through manual feeding. When the core shooter operates at high frequency, if the manual feeding rhythm is slow, it can lead to insufficient sand in the sand hopper, causing unstable sand ejection pressure and incomplete core filling, directly affecting the core forming quality. On the other hand, if too much sand is fed, the core sand may overflow the sand hopper, increasing cleaning costs. Therefore, a sand hopper feeding device needs to be designed to solve these problems.

[0004] It should be noted that the information disclosed in this background section is only for understanding the background technology of this application concept, and therefore may include information that does not constitute prior art. Summary of the Invention

[0005] This invention provides a sand hopper feeding device to solve the problems of low automation in existing feeding methods, easy blockage or waste due to manual tearing of ton bags; and difficulty in continuous sand supply from high sand hoppers, which affects quality or increases cleaning costs.

[0006] The present invention adopts the following technical solution: a sand hopper feeding device. It includes a core shooter having a sand hopper; a sand storage assembly disposed above the sand hopper, the sand storage assembly including a sand storage section disposed above the sand hopper, and a sand guiding section disposed on one side of the sand hopper; a suspended conveying assembly disposed on one side of the sand storage assembly, the suspended conveying assembly being used for conveying ton bags; and a slicing assembly disposed on both sides of the sand hopper, the slicing assembly including a sealing section at the opening of the sand hopper, the sealing section including a large hopper cover and a small hopper cover covering the sand hopper, guiding sections disposed on both sides of the sand hopper, linkage sections disposed on both sides of the sand hopper, and a clearance section disposed on the bottom surface of the large hopper cover.

[0007] Furthermore, an upper limit sand quantity monitor is installed near the upper end of the sand storage hopper, and a lower limit sand quantity monitor is installed near the lower end of the sand storage hopper. The sand storage section includes a sand storage hopper located above the sand storage hopper. A vertically arranged sand discharge pipe is connected to the bottom end of the sand storage hopper. A valve is installed on the sand discharge pipe. The valve is electrically connected to the upper / lower limit sand quantity monitor. One end of the sand discharge pipe is connected to an inclined sand guide pipe. One end of the sand guide pipe is connected to the sand storage hopper of the core shooting machine.

[0008] Furthermore, the sand guiding section includes a fan disposed on one side of the sand storage hopper. The air outlet of the fan is connected to a branch pipe, which includes a conveying pipe one and a conveying pipe two. One end of the conveying pipe one is connected to a Y-shaped pipe, and both ends of the Y-shaped pipe are connected to an air nozzle one. The air nozzle one is inserted through the inclined high end of the sand guiding pipe and is consistent with the inclined direction of the sand guiding pipe.

[0009] Furthermore, the large hopper cover is larger than the small hopper cover, and the two fit together in their initial state. An inclined guide plate is fixed to one end of the bottom surface of the large hopper cover. One side of the guide plate is open, and waist grooves are formed on both sides of the guide plate. The waist grooves are connected to the openings of the guide plate. Horizontally arranged cylinders are fixed to both sides of the sand storage hopper. The telescopic ends of the cylinders are fixed with pulleys that extend into the openings of the guide plate. The axles of the pulleys extend into the high end of the waist grooves on both sides. The movement state of the large hopper cover is switched by the sliding of the pulleys in the waist grooves.

[0010] Furthermore, the guiding part includes L-shaped guide slides fixed on both sides of the sand storage hopper. The guide slides have L-shaped guide grooves that are consistent with their shape. The guide grooves include horizontal grooves and vertical grooves. Vertically arranged connecting rods are fixed on both sides of the large hopper cover. Sliding ends are fixed on the sides of the connecting rods. The sliding ends are located at the bottom of the vertical grooves by default.

[0011] Furthermore, the linkage includes a mounting cover fixed to both sides of the sand storage hopper. A friction wheel is provided in the bearing inside the mounting cover. Two sets of opposing friction rods are in close contact on the friction wheel. The rotation of the friction rods can cause the two sets of friction rods to move closer to or further away from each other. The two sets of friction rods are slidably connected to the inner wall of the mounting cover. A fixing sleeve is fixed to the side of each set of friction rods. A guide groove is provided on the side of the mounting cover for the fixing sleeve to slide horizontally.

[0012] A vertically arranged connecting rod is fixed on the fixed sleeve located on the side of the upper friction rod. One end of the connecting rod is fixedly connected to the side of the small bucket cover, transmitting the movement of the friction rod to the small bucket cover. An L-shaped connecting rod is movably inserted into the fixed sleeve located on the side of the lower friction rod. The connecting rod has a horizontal end and a vertical end. The vertical end is vertically movably inserted into the fixed sleeve on the side of the lower friction rod. A movable sleeve is fixed on the surface of the connecting rod. The horizontal end of the connecting rod is horizontally movably inserted through the movable sleeve. An anti-detachment component is fixed at one end of the horizontal end of the connecting rod.

[0013] Furthermore, the clearance part includes a guide cylinder fixed to the bottom surface of the large bucket cover. A movable rod is movably provided at one end of the guide cylinder. One end of the movable rod extends into the guide cylinder and is fixed with a contact member. A right-angle rod is fixed at the other end of the movable rod. A piercing member is fixed at one end of the right-angle rod. Both the large bucket cover and the small bucket cover are provided with notches for the initial placement of the piercing member. A fixing member is fixed to the inner wall of the guide cylinder near the end of the piercing member.

[0014] Furthermore, the suspended conveying assembly includes a conveying section disposed on one side of the sand storage hopper. The conveying section includes a loop conveying track supported and fixed by a support frame. Sliding grooves are provided on both sides of the conveying track. Two sets of symmetrically arranged mounting frames are fixed on the conveying track near both ends. The bottom surface of the mounting frame is provided with a sprocket. The four sets of sprockets are meshed and connected by a conveying chain. A driving component is fixed on one set of the mounting frames.

[0015] Furthermore, the conveyor chain is provided with a suspension part, which includes a chain frame fixed on the conveyor chain. The chain frame has two protruding ends, and guide wheels are movably arranged on the two protruding ends. The guide wheels are partially embedded in the sliding groove and contact the bottom surface of the inner wall of the sliding groove, providing support and guidance for the sliding of the chain frame. A connecting plate is fixed on the bottom surface of the chain frame, and a hanging rod for hanging ton bags is fixed on the connecting plate.

[0016] Furthermore, the large bucket cover has an in-situ sensor, which is electrically connected to the drive unit of the suspended conveying assembly and the cylinder.

[0017] The above-mentioned at least one technical solution adopted in this invention can achieve the following beneficial effects:

[0018] A sand hopper feeding device, through a closed section consisting of a large hopper cover and a small hopper cover, along with a guiding section, a linkage section, and a clearance section, can automatically puncture ton bags without manual operation. The puncturing component of the clearance section can precisely control the size of the puncture, avoiding core sand blockage due to an excessively small puncture or splashing due to an excessively large puncture, thus reducing material waste. The suspended conveying component can automatically transport the ton bag to the top of the sand storage hopper, replacing manual climbing for feeding. The sand storage hopper of the sand storage component can temporarily store sand, and the sand guiding section assists in the stable delivery of sand to the sand storage hopper of the core shooter. Combined with the sand quantity monitoring of the sand storage hopper, a continuous and stable sand supply can be achieved. This avoids problems such as insufficient sand quantity, unstable sand shooting pressure, and incomplete sand core filling caused by the lag in manual feeding, and also prevents core sand overflow caused by overfeeding, reducing cleaning costs, improving the automation level of feeding and the sand core forming quality, and reducing reliance on manual labor and production losses. Attached Figure Description

[0019] The accompanying drawings, which are provided to further illustrate the invention and constitute a part of this invention, are illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an undue limitation of the invention.

[0020] In the attached diagram:

[0021] Figure 1 This is an overall schematic diagram of a sand hopper feeding device according to this application;

[0022] Figure 2 for Figure 1 Schematic diagram of the core-shooting machine structure;

[0023] Figure 3 for Figure 1 Schematic diagram of the overhead conveyor assembly structure;

[0024] Figure 4 for Figure 1 A partial structural diagram;

[0025] Figure 5 for Figure 4 Enlarged view of point A;

[0026] Figure 6 for Figure 4 A partial structural diagram;

[0027] Figure 7 for Figure 6 Enlarged view of point B;

[0028] Figure 8 for Figure 6 A partial structural diagram;

[0029] Figure 9 for Figure 8 Enlarged view of point C;

[0030] Figure label:

[0031] 1. Core shooter; 11. Support base; 111. Support platform; 12. Sand hopper; 13. Clamping cylinder; 131. Sand shooting head; 14. Mold closing cylinder; 15. Moving template; 151. Guide pillar; 16. Core mold one;

[0032] 2. Sand storage assembly; 21. Sand storage hopper; 22. Valve; 23. Sand guide pipe; 24. Fan; 25. Conveying pipe one; 26. Conveying pipe two; 27. U-shaped pipe; 271. Air nozzle two;

[0033] 3. Slashing component; 31. Cylinder; 32. Large bucket lid; 33. Connecting rod; 331. Sliding end; 34. Guide plate; 341. Waist groove; 35. Pulley; 36. Guide slide; 361. Guide groove; 37. Mounting cover; 371. Guide groove; 38. Small bucket lid; 39. Connecting rod; 391. Vertical end; 310. Movable sleeve; 311. Friction rod; 312. Friction wheel; 313. Fixed sleeve; 314. Guide cylinder; 315. Movable rod; 316. Fixing component; 317. Right angle rod; 318. Piercing component; 319. Connecting rod; 320. Contact component;

[0034] 4. Suspended conveyor assembly; 41. Conveyor track; 411. Sliding chute; 42. Conveyor chain; 43. Mounting frame; 44. Sprocket; 45. Support frame; 46. Chain frame; 461. Guide wheel; 47. Connecting plate; 48. Hanging rod. Detailed Implementation

[0035] To further illustrate the technical means and effects of the present invention in achieving its intended purpose, the following detailed description of the specific implementation methods, structures, features, and effects of the present invention, in conjunction with the accompanying drawings and preferred embodiments, is provided below.

[0036] The technical solutions provided by the various embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0037] Reference Figures 1-2As shown, this invention provides a sand hopper feeding device, including a core shooter 1. The core shooter 1 includes a support base 11, and a support platform 111 is fixed on the support base 11. A sand storage hopper 12 is provided on the support platform 111, serving as a sand storage container for temporarily storing sand required for sand shooting. An upper limit sand level monitor is installed near the upper end inside the sand storage hopper 12, and a lower limit sand level monitor is installed near the lower end inside the hopper. Both are rotary paddle level switches. This type of switch determines the sand level by the contact state between the probe end and the sand. When the sand in the sand storage hopper 12 accumulates to the upper monitoring level... When the sand reaches the position of the device, the upper limit monitor triggers a signal to stop adding sand to the hopper to prevent excessive sand overflow; when the sand is consumed to the position of the lower limit monitor, the lower limit monitor triggers a signal to start the sand replenishment process, ensuring that the sand storage hopper 12 always maintains a sand reserve that meets the sand shooting requirements, providing sand quantity support for the continuous and stable operation of the core shooter 1, and monitoring the amount of sand in the sand storage hopper 12. Two sets of clamping cylinders 13 are set on the support platform 111 at one side of the sand storage hopper 12. The telescopic end of the clamping cylinder 13 is fixed with a sand shooting head 131, and the sand shooting head 131 is driven by the clamping cylinder 13 to complete the sand shooting action.

[0038] Meanwhile, movable templates 15 are fixed on the support base 11 at both sides. On the side of the two movable templates 15 that are far apart from each other, a mold closing cylinder 14 is fixed. On the side of the two movable templates 15 that are close to each other, two sets of symmetrically arranged guide pillars 151 are fixed. A core mold second (not shown in the figure) is fixed to one end of the two sets of guide pillars 151, and a core mold first 16 is movably arranged on the two sets of guide pillars 151. The core mold first 16 and the core mold second cooperate to form a complete cavity, and cooperate with the sand injection head 131 to realize the filling of sand and the forming of sand core. The telescopic end of the mold closing cylinder 14 is connected and fixed to the core mold first 16. The core mold first 16 is driven by the power of the mold closing cylinder 14 to move linearly along the guide pillar 151 to realize mold closing and mold opening.

[0039] During operation, the sand storage hopper 12 serves as a sand storage container. The upper and lower limits of the sand volume on its inner wall are monitored in real time to check the remaining sand volume. The mold closing cylinder 14 first drives the core mold 16 to move along the guide post 151 to the core mold 2 to close the mold and form a complete cavity. Then, the clamping cylinder 13 drives the sand injection head 131 to inject the sand in the sand storage hopper 12 into the cavity under high pressure. After the sand injection is completed, the mold closing cylinder 14 drives the core mold 16 to open and reset along the guide post 151, and the formed sand core can be taken out to complete one core injection cycle. The whole process is automated and precise sand core forming operation through sand volume monitoring and mold cylinder linkage.

[0040] To address the issue that the sand storage hopper 12 of the core shooter 1 is positioned relatively high, and that feeding sand into the hopper 12 via a ton bag requires manually breaking the bottom of the ton bag to allow sand to enter the hopper 12, which is inconvenient, as... Figure 4As shown, a sand storage assembly 2 is provided above the sand storage hopper 12. In actual use, the sand storage assembly 2 can be installed on the roof. The sand storage assembly 2 includes a sand storage section provided above the sand storage hopper 12. The sand storage section includes a sand storage hopper 21 provided above the sand storage hopper 12. The sand storage hopper 12 is an automatic feeding and sand replenishment assembly. A feeding hole with the same opening as the sand storage hopper 21 can be provided on the roof. The sand storage hopper 21 is used for temporary storage of sand. The bottom end of the sand storage hopper 21 is connected to a vertically arranged sand discharge pipe (not shown in the figure). The sand discharge pipe is equipped with a valve 22, which is electrically connected to the sand quantity upper / lower limit monitor to realize the automatic control of sand replenishment. The valve 22 is used to control the fall of sand in the sand storage hopper 21. An inclined sand guide pipe 23 is connected to one end of the sand discharge pipe. It is a channel component for transporting sand from the sand storage hopper 21 to the sand storage hopper 12. The inclined design is conducive to the sand sliding down with the assistance of gravity and airflow. One end of the sand guide pipe 23 is connected to the sand storage hopper 12 of the core shooter 1 to facilitate the feeding of sand into the sand storage hopper 12.

[0041] A sand guiding section is provided on one side of the sand storage hopper 21 to provide airflow power for the sand conveying in the sand guiding pipe 23 and the sand stirring in the sand storage hopper 21. The sand guiding section includes a fan 24 located on one side of the sand storage hopper 21. The outlet end of the fan 24 is connected to a branch pipe (not shown in the figure). The branch pipe includes a first conveying pipe 25 and a second conveying pipe 26. A Y-shaped pipe (not shown in the figure) is connected to one end of the first conveying pipe 25. Air nozzles are connected to both ends of the Y-shaped pipe. The first air nozzle is inserted through the inclined high end of the sand guiding pipe 23 and is positioned in conjunction with the inclined side of the sand guiding pipe 23. The airflow from the conveying pipe 25 is directed into the sand guide pipe 23, which helps the sand slide down the sand guide pipe 23, improving the conveying efficiency and reducing the number of times sand is manually poured into the sand storage hopper 12 of the core shooter 1. A loop pipe 27 is sleeved on the sand storage hopper 21 near the bottom. Multiple sets of air nozzles 271 are installed on the loop pipe 27. The air nozzles 271 extend through into the sand storage hopper 21. The airflow generated by the air nozzles 271 only stirs the sand poured into the sand storage hopper 21, preventing the sand from arching and clogging in the sand storage hopper 21.

[0042] like Figure 3As shown, a suspended conveying assembly 4 is provided on one side of the sand storage hopper 21. This is an automated conveying assembly for ton bags, replacing manual feeding and improving feeding efficiency and automation. The suspended conveying assembly 4 can be installed on the roof. It is used to sequentially convey ton bags containing sand to the top of the sand storage hopper 21. The suspended conveying assembly 4 includes a conveying section on one side of the sand storage hopper 21. The conveying section includes a loop conveying track 41 supported and fixed by a support frame 45. Sliding grooves 411 are provided on both sides of the conveying track 41. Two sets of symmetrically arranged mounting frames 43 are fixed on the conveying track 41 near both ends. The bottom bearing of the mounting frame 43 is provided with a sprocket 44. A conveying chain 42 is meshed between the four sets of sprockets 44. A drive component (not shown in the figure) is fixed on one set of mounting frames 43. The output end of the drive component passes through the mounting frame 43 and is fixedly connected to the sprocket 44 to realize the cyclic movement of the conveying chain 42.

[0043] Meanwhile, a suspension part is provided on the conveyor chain 42. The suspension part includes a chain frame 46 fixed on the conveyor chain 42. The chain frame 46 has two protruding ends, and guide wheels 461 are movably arranged on the two protruding ends. The guide wheels 461 are partially embedded in the sliding groove 411 and contact the bottom surface of the inner wall of the sliding groove, providing support and guidance for the sliding of the chain frame 46 and reducing sliding resistance. A connecting plate 47 is fixed on the bottom surface of the chain frame 46. A hanging rod 48 is fixed on the connecting plate 47, which is the hanging part of the ton bag. In actual use, the ton bag can be hung on the hanging rod 48 and automatically fed by circulating with the chain frame 46.

[0044] like Figures 5-7 As shown, tearing components 3 are provided on both sides of the sand storage hopper 21. These tearing components 3 are used to automatically tear the ton bag and simultaneously open the opening of the sand storage hopper 21, replacing manual tearing of the ton bag. The tearing components 3 include a sealing part located at the opening of the sand storage hopper 21. The sealing part includes a large hopper cover 32 and a small hopper cover 38 that cover the sand storage hopper 21. The large hopper cover 32 is larger than the small hopper cover 38, and the two are initially fitted together to seal the upper opening of the sand storage hopper 21. The bottom surface of the large hopper cover 32 is close to the opening of the sand storage hopper 21. An inclined guide plate 34 is fixed at one end. One side of the guide plate 34 is open, and waist grooves 341 are provided on both sides of the guide plate 34. The waist grooves 341 are connected to the opening of the guide plate 34. Horizontally arranged cylinders 31 are fixed on both sides of the sand storage hopper 21. The telescopic end of the cylinder 31 is fixed with a pulley 35 that extends into the opening of the guide plate 34. At the same time, the axle of the pulley 35 extends into the high end of the waist grooves 341 on both sides. The movement state of the large hopper cover 32 is switched by the sliding of the pulley 35 in the waist grooves 341.

[0045] Furthermore, guide sections are provided on both sides of the sand storage hopper 21. Each guide section includes an L-shaped guide slide 36 fixed to both sides of the sand storage hopper 21. The guide slide 36 has an L-shaped guide groove 361 that matches its shape. The L-shaped guide groove 361 provides a movement path for the large hopper cover 32, first lifting and then leveling. The guide groove 361 includes a horizontal groove and a vertical groove. Simultaneously, vertically arranged connecting rods 33 are fixed to both sides of the large hopper cover 32. Sliding ends 331 are fixed to the sides of the connecting rods 33. The movement trajectory of the large hopper cover 32 is controlled by sliding the sliding ends 331 within the guide grooves 361. 1. By default, it is located at the bottom of the vertical slide groove. When the cylinder 31 is activated, the telescopic end of the cylinder 31 pushes the large bucket cover 32 to move through the guide plate 34. At this time, the large bucket cover 32 is restricted by the vertical slide groove through the sliding end 331, causing the large bucket cover 32 to gradually move upward through the waist groove 341 of the guide plate 34. Simultaneously, the large bucket cover 32 drives the sliding end 331 to gradually slide upward from the bottom of the vertical slide groove. When the pulley 35 gradually slides to the bottom position of the waist groove 341, the sliding end 331 enters the horizontal slide groove from the vertical slide groove. With the continued drive of the cylinder 31, the large bucket cover 32 slides horizontally to the left (see reference). Figure 4 That is, the movement of the large lid 32 is restricted to a tendency to move upward first and then to the left;

[0046] To achieve synchronous unfolding of the small bucket cover 38, in order to facilitate the receiving of sand from the ton bag, such as... Figures 6-7 As shown, there are linkage parts on both sides of the sand storage hopper 21. The linkage part includes a mounting cover 37 fixed on both sides of the sand storage hopper 21. The mounting cover 37 has a bearing for a friction wheel 312. Two sets of opposing friction rods 311 are in close contact on the friction wheel 312. The rotation of the friction rods 311 can make the two sets of friction rods 311 move closer or further away from each other. Similarly, when one set of friction rods 311 moves, it can drive the other set of friction rods 311 to move synchronously. The two sets of friction rods 311 are slidably connected to the inner wall of the mounting cover 37 to restrict the friction rods 311 to only achieve linear movement. Fixing sleeves 313 are fixed on the sides of both sets of friction rods 311. At the same time, a guide groove 371 for the fixing sleeves 313 to slide horizontally is opened on the side of the mounting cover 37.

[0047] A vertically arranged connecting rod 319 is fixed to the fixing sleeve 313 on the side of the upper friction rod 311. One end of the connecting rod 319 is fixedly connected to the side of the small lid 38, transmitting the movement of the friction rod 311 to the small lid 38. At the same time, an L-shaped connecting rod 39 is movably inserted into the fixing sleeve 313 on the side of the lower friction rod 311. The connecting rod 39 has a horizontal end and a vertical end 391. The vertical end 391 is vertically movably inserted into the fixing sleeve 313 on the side of the lower friction rod 311, providing space for the lifting and lowering movement of the large lid 32 and avoiding movement interference. Meanwhile, a movable sleeve 310 is fixed to the surface of the connecting rod 33. The horizontal end of the connecting rod 39 is horizontally movably inserted through the movable sleeve 310, and an anti-detachment component (not shown in the figure) is fixed to one end of the horizontal end of the connecting rod 39.

[0048] To achieve the goal of first unfolding the large hopper cover 32 and the small hopper cover 38, and then puncturing the ton bag, as follows: Figures 8-9 As shown, a clearance portion is provided on the bottom surface of the large hopper cover 32. The clearance portion includes a guide cylinder 314 fixed to the bottom surface of the large hopper cover 32, and a movable rod 315 is movably provided at one end of the guide cylinder 314. One end of the movable rod 315 extends into the guide cylinder 314 and is fixed with a contact member 320, and the other end of the movable rod 315 is fixed with a right-angle rod 317. One end of the right-angle rod 317 is fixed with a puncturing member 318. The sharp structure realizes automatic slicing of the bottom of the ton bag. At the same time, notches (not shown in the figure) are opened on both the large hopper cover 32 and the small hopper cover 38 for the initial placement of the puncturing member 318. A fixing member 316 is fixed on the inner wall of the guide cylinder 314 near the end of the puncturing member 318. By contacting the contact member 320, the movement of the movable rod 315 is restricted, thereby enabling the puncturing member 318 to complete the slicing action.

[0049] It should be noted that in actual use, when the ton bag on the hanging rod 48 is directly above the sand storage hopper 21, the cylinder 31 is activated. The telescopic end of the cylinder 31 pushes the large hopper cover 32 to move through the guide plate 34. At this time, the large hopper cover 32 is restricted by the vertical groove through the sliding end 331, causing the large hopper cover 32 to gradually move upward through the waist groove 341 of the guide plate 34. Simultaneously, the large hopper cover 32 drives the sliding end 331 to gradually slide upward from the bottom end of the vertical groove. At this time, the puncture part 31... 8. Insert the rod into the bottom of the ton bag to achieve initial contact. Simultaneously, the connecting rod 33 drives the connecting rod 39 to move upward through the movable sleeve 310. Since the vertical end 391 of the connecting rod 39 is movably connected to the fixed sleeve 313, there will be no movement interference. When the pulley 35 gradually slides to the bottom of the waist groove 341, the sliding end 331 enters the horizontal groove from the vertical groove. With the continued drive of the cylinder 31, the large bucket cover 32 slides horizontally to the left (see reference). Figure 4At this time, the synchronous connecting rod 39 drives the friction rod 311 at the lower end to move to the left through the fixed sleeve 313, and then drives the friction rod 311 at the upper end to move to the right through the driving friction wheel 312, and transmits it to the small hopper cover 38 through the connecting rod 319, so that the large hopper cover 32 and the small hopper cover 38 can be opened to both sides, so that the opening of the sand storage hopper 21 is in the open state.

[0050] Simultaneously, when the large hopper cover 32 slides horizontally to the left, the piercing element 318 is inserted into the bottom of the ton bag, thus only driving the guide cylinder 314 to move to the left until the large hopper cover 32 and the small hopper cover 38 unfold to both sides. At this time, when the opening of the sand storage hopper 21 is larger than the width of the ton bag, the contact element 320 at one end of the movable rod 315 contacts the fixing element 316, and with the continued driving of the cylinder 31, it drives the piercing element 318 to tear open the ton bag. Since the size of the large hopper cover 32 is larger than the size of the small hopper cover 38, when the piercing element 318 moves upward and inserts into the bottom of the ton bag and tears open the ton bag, it can tear a larger opening, so that the sand in the ton bag can fall into the sand storage hopper 21 more quickly, realizing the automatic tearing of the ton bag and the efficient falling of sand, replacing manual operation, improving feeding efficiency and automation.

[0051] In practical applications, the large hopper cover 32 is equipped with an in-situ sensor, which typically uses infrared beam or ultrasonic detection principles to identify whether the ton bag has reached the preset position directly above the sand storage hopper 21. When the hanging rod 48 of the suspended conveying assembly 4 moves along the conveying track 41 with the ton bag, once the ton bag enters the detection range of the in-situ sensor and is directly above the opening of the sand storage hopper 21, the sensor will immediately send an electrical signal to the drive component (such as a motor) of the suspended conveying assembly 4. After receiving the signal, the drive component stops operating, causing the conveying chain 42 to pause its movement, ensuring that the ton bag is stably suspended in the designated position, and preventing sand from leaking out or falling outside the sand storage hopper 21 when the ton bag is subsequently torn due to positional deviation.

[0052] At the same time, the in-situ sensor sends a start signal to the cylinder 31, triggering the slashing component 3 to start working: the telescopic end of the cylinder 31 pushes the guide plate 34, causing the large bucket cover 32 and the small bucket cover 38 to unfold along a preset trajectory, and the puncturing component 318 then completes the slashing action at the bottom of the ton bag.

[0053] Working principle: When the core shooting machine 1 is working, the sand storage hopper 12 serves as a sand storage container. The upper and lower limit monitors of the sand volume on its inner wall monitor the remaining sand volume in real time, providing data for subsequent material feeding. After the core making process starts, the mold closing cylinders 14 on the two moving templates 15 first drive the first core mold 16 to move along the guide post 151 towards the second core mold until the two are precisely closed to form a complete cavity. After the cavity is closed, the two sets of clamping cylinders 13 on the support platform 111 are activated. Their telescopic ends drive the sand shooting head 131 to inject the sand in the sand storage hopper 12 into the cavity in a high-pressure form, completing the sand filling. After the sand shooting is completed, the mold closing cylinder 14 drives the first core mold 16 to reset and open along the guide post 151. The operator can then remove the formed sand core, thus completing one core shooting cycle. The entire process achieves automation and precision in sand core forming through the linkage of sand volume monitoring and mold cylinders.

[0054] When the remaining sand in sand hopper 12 falls below the lower limit monitoring threshold, it is electrically linked to valve 22 on the sand discharge pipe of sand storage component 2. Valve 22 automatically opens, and the sand temporarily stored in sand hopper 21 flows into the inclined guide pipe 23 through the discharge pipe. The guide pipe 23, with its inclined structure, allows the sand to slide down by gravity. Simultaneously, the fan 24 on one side of sand hopper 21 starts, and airflow passes through the bifurcated pipe 25 and the Y-shaped pipe guide nozzle 1. Nozzle 1 sprays air along the inclined direction of guide pipe 23, assisting the sand to slide down faster and preventing sand accumulation in guide pipe 23. Furthermore, on the U-shaped pipe 27 at the bottom of sand hopper 21, nozzle 271 sprays airflow into the hopper, creating a stirring effect on the sand and preventing the sand from clogging the discharge port due to moisture or accumulation. When the sand in sand hopper 12 reaches the upper limit monitoring threshold, valve 22 automatically closes, stopping sand replenishment and ensuring that the sand in sand hopper 12 remains within a reasonable working range.

[0055] The suspended conveying assembly 4 is fixed to the roof by a support frame 45. The drive unit drives the sprocket 44 to rotate, causing the meshing conveying chain 42 to circulate along the loop conveying track 41. The chain frame 46 moves synchronously with the conveying chain, and the guide wheel 461 at its extended end slides in the sliding groove 411, providing support and guidance for the chain frame 46. The hanging rod 48 on the connecting plate 47 below suspends the ton bags filled with sand, and the ton bags are conveyed sequentially to the top of the sand storage hopper 21. When the ton bag reaches the preset position, the position sensor on the large hopper cover 32 detects the ton bag through infrared beam or ultrasonic wave, and immediately sends a signal to the drive unit of the suspended conveying assembly 4. The drive unit stops operating, the conveying chain pauses, and the ton bag is stably suspended. At the same time, the sensor sends a start signal to the cylinder 31, triggering the cutting component 3 to work, realizing seamless linkage of ton bag arrival, conveying pause, and automatic cutting.

[0056] After cylinder 31 is started, its telescopic end pushes the guide plate 34, and pulley 35 slides in the waist grooves 341 on both sides of the guide plate 34. The connecting rods 33 on both sides of the large bucket cover 32 drive the sliding end 331 to move along the L-shaped guide groove 361 of the guide slide 36: In the initial stage, the sliding end 331 moves upward along the vertical groove, and the large bucket cover 32 rises synchronously, and the puncture piece 318 on the bottom surface inserts into the bottom of the ton bag; when pulley 35 slides to the bottom of the waist groove 341, the sliding end 331... 31 enters the horizontal chute, and cylinder 31 continues to drive the large hopper cover 32 to slide horizontally to the left. Connecting rod 33 drives connecting rod 39 through movable sleeve. Connecting rod 39 pulls the lower friction rod 311 to move to the left along the guide groove 371 of the mounting cover 37. Friction rod 311 drives the upper friction rod 311 to move to the right through friction wheel 312. The upper friction rod 311 pulls the small hopper cover 38 to unfold to the right through connecting rod 319, and the sand storage hopper 21 opens. When the opening of the sand storage hopper 21 is larger than the width of the ton bag, the movable rod 315 in the guide cylinder 314 moves with the large hopper cover 32. The contact part 320 contacts the fixed part 316, and the movable rod 315 can no longer move. Cylinder 31 continues to drive, causing the puncturing part 318 to generate a pulling force on the bottom of the ton bag, tearing open a larger opening. Sand quickly falls into the sand storage hopper 21, completing automatic feeding. No manual intervention is required throughout the process, improving feeding efficiency and safety.

[0057] After the sand in the ton bag has completely fallen into the sand storage hopper 21, the cylinder 31 extends and retracts in the opposite direction, causing the pulley 35 to slide from the bottom to the top along the waist groove 341 of the guide plate 34. The large hopper cover 32 moves in the opposite direction: the sliding end 331 first resets along the horizontal groove of the guide slide 36, and then slides down into the vertical groove until the large hopper cover 32 returns to its initial position. At the same time, the large hopper cover 32 pulls the lower friction rod 311 to move in the opposite direction through the connecting rod 39. The friction wheel 312 synchronously drives the upper friction rod 311 to reset. The connecting rod 319 pulls the small hopper cover 38 to move towards the middle. Finally, the large hopper cover 32 and the small hopper cover 38 re-fit together, sealing the opening of the sand storage hopper 21.

[0058] The puncture component 318 resets with the large hopper cover 32, detaching from the remaining portion of the ton bag. The movable rod 315 returns to its initial state within the guide cylinder 314, and the contact component 320 separates from the fixing component 316. After the position sensor detects that the large hopper cover 32 has reset, it sends a signal to the drive component of the suspended conveying assembly 4. The drive component restarts, and the conveying chain 42 continues to move the hanging rod 48, conveying the empty ton bag to the designated recycling area. At the same time, a new full-load ton bag is conveyed to the top of the sand storage hopper 21, ready for the next feeding cycle. If there is sufficient sand in the sand storage hopper 21, the sand replenishment system of the sand storage hopper 12 is also in standby mode, waiting for the next sand replenishment signal, ensuring that the entire device is ready to be put into the next round of core shooting and feeding operations at any time.

[0059] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A sand hopper feeding device, characterized in that: include Core shooter (1), which has a sand storage hopper (12); A sand storage assembly (2) is disposed above the sand storage hopper (12). The sand storage assembly (2) includes a sand storage section disposed above the sand storage hopper (12). The sand storage section includes a sand storage hopper (21) disposed above the sand storage hopper (12). A sand guiding section is provided on one side of the sand storage hopper (21). A suspended conveying assembly (4) is disposed on one side of the sand storage assembly (2), the suspended conveying assembly (4) being used for conveying ton bags; A slicing component (3) is provided on both sides of the sand storage hopper (21). The slicing component (3) includes a sealing part at the opening of the sand storage hopper (21). The sealing part includes a large hopper cover (32) and a small hopper cover (38) covering the sand storage hopper (21). Guide parts are provided on both sides of the sand storage hopper (21). Linkage parts are provided on both sides of the sand storage hopper (21). A clearance part is provided on the bottom surface of the large hopper cover (32). The linkage is used to realize the synchronous unfolding of the small bucket cover (38); The guide section includes L-shaped guide slides (36) fixed on both sides of the sand storage hopper (21). The guide slides (36) have L-shaped guide grooves (361) that are consistent with their shape. The guide grooves (361) include horizontal grooves and vertical grooves. Vertical connecting rods (33) are fixed on both sides of the large hopper cover (32). Sliding ends (331) are fixed on the sides of the connecting rods (33). The sliding ends (331) are located at the bottom of the vertical groove by default. The clearance part includes a bottom guide cylinder (314) fixed to the large bucket cover (32). A movable rod (315) is movably provided at one end of the guide cylinder (314). One end of the movable rod (315) extends into the guide cylinder (314) and is fixed with a contact member (320). A right-angle rod (317) is fixed at the other end of the movable rod (315). A piercing member (318) is fixed at one end of the right-angle rod (317). Both the large bucket cover (32) and the small bucket cover (38) are provided with notches and grooves for the initial placement of the piercing member (318). A fixing member (316) is fixed to the inner wall of the guide cylinder (314) near the end of the piercing member (318).

2. The sand hopper feeding device according to claim 1, characterized in that: A sand quantity upper limit monitor is installed inside the sand storage hopper (12) near the upper end, and a sand quantity lower limit monitor is installed inside the sand storage hopper (12) near the lower end. A vertically arranged sand discharge pipe is connected to the bottom end of the sand storage hopper (21). A valve (22) is installed on the sand discharge pipe. The valve (22) is electrically connected to the sand quantity upper / lower limit monitor. One end of the sand discharge pipe is connected to an inclined sand guide pipe (23). One end of the sand guide pipe (23) is connected to the sand storage hopper (12) of the core shooter (1).

3. The sand hopper feeding device according to claim 2, characterized in that: The sand guiding section includes a fan (24) disposed on one side of the sand storage hopper (21). The air outlet of the fan (24) is connected to a branch pipe. The branch pipe includes a first conveying pipe (25) and a second conveying pipe (26). One end of the first conveying pipe (25) is connected to a Y-shaped pipe. Both ends of the Y-shaped pipe are connected to an air nozzle. The air nozzle is inserted through the inclined high end of the sand guiding pipe (23) and is consistent with the inclined direction of the sand guiding pipe (23).

4. The sand hopper feeding device according to claim 1, characterized in that: The size of the large hopper cover (32) is larger than that of the small hopper cover (38), and the two are initially fitted together. An inclined guide plate (34) is fixed on the bottom surface of the large hopper cover (32) near one end. One side of the guide plate (34) is open. Waist grooves (341) are opened on both sides of the guide plate (34). The waist grooves (341) are connected to the opening of the guide plate (34). A horizontally arranged cylinder (31) is fixed on both sides of the sand storage hopper (21). A pulley (35) is fixed at the telescopic end of the cylinder (31) and extends into the opening of the guide plate (34). The axle of the pulley (35) extends into the high end of the waist grooves (341) on both sides. The movement state of the large hopper cover (32) is switched by the sliding of the pulley (35) in the waist grooves (341).

5. A sand hopper feeding device according to claim 4, characterized in that: The linkage includes a mounting cover (37) fixed on both sides of the sand storage hopper (21). A friction wheel (312) is provided in the bearing inside the mounting cover (37). Two sets of opposing friction rods (311) are in close contact on the friction wheel (312). The two sets of friction rods (311) can move closer or further away from each other by rotating the friction wheel (312). The two sets of friction rods (311) are slidably connected to the inner wall of the mounting cover (37). A fixing sleeve (313) is fixed on the side of each set of friction rods (311). A guide groove (371) is opened on the side of the mounting cover (37) for the fixing sleeve (313) to slide horizontally. A vertically arranged connecting rod (319) is fixed on the fixed sleeve (313) located on the side of the upper friction rod (311). One end of the connecting rod (319) is fixedly connected to the side of the small bucket cover (38) to transmit the movement of the friction rod (311) to the small bucket cover (38). An L-shaped connecting rod (39) is movably inserted into the fixed sleeve (313) located on the side of the lower friction rod (311). The connecting rod (39) has a horizontal end and a vertical end (391). The vertical end (391) is vertically movably inserted into the fixed sleeve (313) on the side of the lower friction rod (311). A movable sleeve (310) is fixed on the surface of the connecting rod (33). The horizontal end of the connecting rod (39) is horizontally movably inserted through the movable sleeve (310). One end of the horizontal end of the connecting rod (39) is fixed with an anti-detachment component.

6. A sand hopper feeding device according to claim 5, characterized in that: The suspended conveying assembly (4) includes a conveying section disposed on one side of the sand storage hopper (21). The conveying section includes a loop conveying track (41) supported and fixed by a support frame (45). The conveying track (41) has sliding grooves (411) on both sides. Two sets of symmetrically arranged mounting frames (43) are fixed on the conveying track (41) near both ends. The bottom surface of the mounting frame (43) is provided with a sprocket (44). The four sets of sprockets (44) are meshed and connected by a conveying chain (42). A driving component is fixed on one set of the mounting frame (43).

7. A sand hopper feeding device according to claim 6, characterized in that: The conveying chain (42) is provided with a suspension part, which includes a chain frame (46) fixed on the conveying chain (42). The chain frame (46) has two protruding ends, and guide wheels (461) are movably arranged on the two protruding ends. The guide wheels (461) are partially embedded in the sliding groove (411) and contact the bottom surface of the inner wall of the sliding groove (411), providing support and guidance for the sliding of the chain frame (46). A connecting plate (47) is fixed on the bottom surface of the chain frame (46), and a hanging rod (48) for hanging ton bags is fixed on the connecting plate (47).

8. A sand hopper feeding device according to claim 7, characterized in that: The large bucket cover (32) has an in-situ sensor, which is electrically connected to the drive of the suspended conveying assembly (4) and the cylinder (31).

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