A universal sand shooting plate device

Abstract

The utility model discloses a kind of general sand shooting plate devices;Including the connecting plate of being arranged at the lower end of sand shooting hopper opening and the flow guide plate being arranged in the inner cavity of sand shooting hopper and with the connecting plate parallel, several vertical columns are vertically arranged between the connecting plate and the flow guide plate, the upper end surface of connecting plate is evenly provided with several sliding through holes, and several sliding through holes are arranged in matrix, and each group of sliding through holes is coaxially provided with sand shooting nozzle, and sand shooting nozzle is coaxially provided with sand shooting through hole;Sand shooting nozzle is slidably connected with connecting plate by sliding through hole;The device can be realized by the simple up-down movement of operator to sand shooting nozzle, and the plugging and conduction of sand shooting nozzle.

Description

Technical Field

[0001] This utility model relates to the field of molding sand technology, and in particular to a universal sand-shooting plate device. Background Technology

[0002] The core-forming machine is a device that uses a hot core box process to produce coated sand cores. The core-forming machine employs a hot core box process with mold opening and closing for parting. The main structure of the core-forming machine consists of a support frame 1, a sandblasting device 2, a mold support 3, and other components. The entire mold support 3 is mounted on a base by the support frame 1. The moving mold plate moves left and right under the pushing and pulling of the mold closing mechanism to complete the mold closing. The sandblasting device 2 injects coated sand into the inner cavity of the mold after mold closing. The coated sand distributed in the inner cavity of the core solidifies during the heating process to form the core.

[0003] The sandblasting device 2 includes a vertically arranged sand cylinder 4 with openings at both ends. A sandblasting section is provided below the sand cylinder 4. The sandblasting section is used to guide the coated sand in the sand cylinder 4 into the inner cavity of the mold after mold closing. The sandblasting section includes a sand-shooting funnel 5 with openings at both the top and bottom. A connecting plate 6 is provided at the lower opening of the sand-shooting funnel 5. A plurality of sliding through holes 7 are provided on the connecting plate 6. The sliding through holes 7 are arranged in a matrix. A sand-shooting nozzle 8 is threadedly connected to the sliding through holes 7. The sand-shooting nozzle 8 is coaxially provided with a sand-shooting through hole 13. A guide plate 9 is also arranged parallel above the sand-shooting through-hole 13. The four corners of the guide plate 9 are fixedly connected to the connecting plate 6 through the column 10. The spacing between the guide plate 9 and the connecting plate 6 forms the first sand-shooting channel 11. The gap between the guide plate 9 and the inner cavity of the sand-shooting funnel 5 forms the second sand-shooting channel 12. In order to ensure that only the injection holes of different mold cavities are connected among the matrix-arranged sand-shooting through-holes 13, each group of sand-shooting through-holes 13 is coaxially and detachably connected with a plug. After the corresponding plug is plugged, the air pump connected to the upper part of the inner cavity of the sand cylinder 4 is turned on, so that a large amount of gas flows out through the sand cylinder 4, the sand-shooting funnel 5, the second sand-shooting channel 12, the first sand-shooting channel 11 and the sand-shooting through-hole 13 corresponding to the injection hole of the mold cavity. At this time, a large amount of coating abrasive flows out through the sand-shooting through-hole 13 with the gas and enters the mold cavity, completing the sand-blasting process.

[0004] However, the plug and the sand-shooting through hole 13 are usually connected by threads, and the operator needs to rotate the plug frequently. Moreover, the disassembly and installation of a single plug usually takes a long time, especially when the plug is located in the middle of the connecting plate 6. The manual rotation of the plug is not easy to implement and increases the safety hazard for the operator.

[0005] The applicant has disclosed a universal core-shooting plate device for casting core-shooting machines (CN 215657716 U), belonging to the technical field of core-shooting machine technology. This universal core-shooting plate device includes a core-shooting plate, spacers, a sand-blocking plate, and a heat-resistant rubber plate. A sand-blocking plate is positioned at the top of the core-shooting plate, and several spacers are positioned below the sand-blocking plate. These spacers are connected to the sand-blocking plate via connecting parts at their centers. A heat-resistant rubber plate is positioned at the bottom of the core-shooting plate. Multiple through-holes are spaced apart along the center line of the core-shooting plate, and multiple through holes are spaced apart along the center line of the heat-resistant rubber plate. The through holes on the heat-resistant rubber plate correspond one-to-one with the threaded holes on the core-shooting plate. A plug can be installed at the bottom of the threaded holes on the core-shooting plate. The core-shooting plate device for casting core-shooting machines provided by this invention is universally applicable to different molds, and the sealing performance during sand shooting is good after the core-shooting plate device is fitted to the mold.

[0006] However, the above-mentioned device has the following problems: multiple through holes are spaced apart on the center line of the heat-resistant rubber plate. The through holes on the heat-resistant rubber plate correspond one-to-one with the threaded holes on the injection plate. The operation time for disassembling and installing the plugs of multiple sets of threaded connections is long, which reduces work efficiency and increases the time that operators are exposed under the injection plate device, thus increasing safety hazards. Utility Model Content

[0007] The purpose of this invention is to provide a universal sand-shooting plate device that can achieve the blocking and opening of the sand-shooting nozzle by the operator simply moving the nozzle up and down, effectively reducing the operator's working time, improving work efficiency, and enhancing the safety of the shell core machine.

[0008] The present invention adopts the following technical solution: A universal sand-shooting plate device includes a connecting plate disposed on the lower end face of the opening of a sand-shooting funnel and a guide plate disposed in the inner cavity of the sand-shooting funnel and parallel to the connecting plate. Several columns are vertically arranged between the connecting plate and the guide plate. Several sliding through holes are evenly distributed on the upper end face of the connecting plate, arranged in a matrix. A sand-shooting nozzle is coaxially disposed within each set of sliding through holes, and the sand-shooting nozzle has a sand-shooting through hole coaxially disposed within it. The sand-shooting nozzle is slidably connected to the connecting plate through the sliding through holes. A sand-shooting nozzle positioning part is disposed at the upper part of each set of sand-shooting nozzles. When the sand-shooting nozzle moves upward, the upper end face of the sand-shooting through hole is tightly pressed against the guide plate, and the sand-shooting nozzle positioning part keeps the sand-shooting nozzle tightly pressed against the lower end face of the guide plate, thus sealing the sand-shooting through hole. When the sand-shooting nozzle positioning part moves downward, a gap appears between the upper opening of the sand-shooting through hole and the guide plate, and the sand-shooting nozzle positioning part maintains a set distance between the sand-shooting nozzle and the lower end of the guide plate, thus opening the sand-shooting through hole.

[0009] Furthermore, the sand-shooting nozzle positioning part includes two sets of receiving grooves evenly opened on the upper peripheral wall of the sand-shooting nozzle and a support block arranged radially in the receiving groove at the top. Each set of receiving grooves is provided with a set of guide rods, and the two ends of the guide rods are respectively fixed to the two side walls of the corresponding receiving grooves. The guide rods pass through the inner end of the support block and are rotatably connected to the support block.

[0010] Furthermore, the support block is semi-disc shaped; the upper end of the support block is arc-shaped, and the lower end of the support block is flat.

[0011] Furthermore, both sides of each set of support blocks are tightly attached to the inner side of the corresponding receiving groove.

[0012] Furthermore, when the upper end face of the jet nozzle is pressed against the lower end face of the guide plate, the inner end face of the support block is flush with the upper opening of the receiving groove.

[0013] Furthermore, a ring spring is coaxially arranged on the upper part of the sand-shooting nozzle, and the ring spring passes through the middle of the two sets of support blocks.

[0014] Furthermore, the outer side of the opening of the jet nozzle is chamfered.

[0015] Furthermore, the guide rod is arranged in a direction parallel to the diagonal of the connecting plate.

[0016] Furthermore, an observation groove parallel to the axial direction of the guide rod is provided at the opening of the lower end face of the jet nozzle.

[0017] This invention, by setting a positioning part for the sand-shooting nozzle, enables the sand-shooting nozzle to be positioned in two positions, upper and lower, replacing the original rotating thread positioning of the sand-shooting nozzle and simplifying the operation process for operators.

[0018] This invention utilizes a ring spring to convert the tension generated by the up-and-down movement of the sand-shooting nozzle into the elastic force of the ring spring, while simultaneously using the elastic force of the ring spring to maintain the sand-shooting nozzle in a set position. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the support frame of this utility model; Figure 2 This is a schematic diagram of the structure of the mold support part of this utility model; Figure 3 This is a schematic diagram of the sandblasting device of this utility model; Figure 4 This is a schematic diagram of the structure of the sand-shooting funnel of this utility model; Figure 5 This is a schematic diagram of the structure of the sand cylinder of this utility model; Figure 6 This is a schematic diagram of the connecting plate of this utility model; Figure 7This is a schematic diagram of the structure of the sand-shooting nozzle of this utility model; Figure 8 This is a schematic diagram of the structure of the column of this utility model; Figure 9 This is a schematic diagram of the guide rod of this utility model; Figure 10 This is a schematic diagram of the structure of the ring spring of this utility model; Figure 11 This is a schematic diagram of the structure of the support block of this utility model; Figure 12 This is a schematic diagram of the structure of the guide plate of this utility model.

[0020] In the diagram, 1. Support frame; 2. Sandblasting device; 3. Mold support; 4. Sand cylinder; 5. Sand blasting funnel; 6. Connecting plate; 7. Through hole; 8. Sand blasting nozzle; 9. Guide plate; 10. Column; 11. First sand blasting channel; 12. Second sand blasting channel; 13. Sand blasting through hole; 14. Receiving groove; 15. Support block; 16. Guide rod; 17. Ring spring; 18. Observation groove. Detailed Implementation

[0021] The present invention will now be described in detail with reference to the accompanying drawings and embodiments: like Figures 1 to 12 As shown, the universal sand-shooting plate device of this utility model includes a connecting plate 6 disposed on the lower end face of the opening of the sand-shooting funnel 5 and a guide plate 9 disposed in the inner cavity of the sand-shooting funnel 5 and parallel to the connecting plate 6. Several columns 10 are vertically arranged between the connecting plate 6 and the guide plate 9. Several sliding through holes 7 are evenly opened on the upper end face of the connecting plate 6. The sliding through holes 7 are arranged in a matrix. A sand-shooting nozzle 8 is coaxially disposed in each group of sliding through holes 7. The sand-shooting nozzle 8 is coaxially opened with a sand-shooting through hole 13. The sliding through hole 7 is slidably connected to the connecting plate 6. Each set of sand-shooting nozzles 8 is provided with a sand-shooting nozzle positioning part on the upper part. When the sand-shooting nozzle 8 moves upward, the upper end face of the sand-shooting through hole 13 is in close contact with the guide plate 9. The sand-shooting nozzle positioning part keeps the sand-shooting nozzle 8 in close contact with the lower end face of the guide plate 9, and the sand-shooting through hole 13 is blocked. When the sand-shooting nozzle positioning part moves downward, a gap appears between the upper opening of the sand-shooting through hole 13 and the guide plate 9. The sand-shooting nozzle positioning part keeps the sand-shooting nozzle 8 and the guide plate 9 at a set distance, and the sand-shooting through hole 13 is open.

[0022] Before sandblasting, ensure that each set of sand-shooting nozzles 8 is moved upwards and kept in close contact with the lower end face of the guide plate 9; move the sandblasting device 2 backwards to the set position, inject coated sand into the sandblasting device 2, and under the action of gravity, the coated sand flows downwards into the sand cylinder 4. After the sand cylinder 4 is filled with a certain amount, since the coated sand is only subject to gravity, a large amount of coated sand will accumulate downwards along the inner cavity of the sand-shooting funnel 5 and onto the upper end face of the guide plate 9; the operator moves the sand-shooting nozzle 8 corresponding to the injection hole in the mold cavity downwards until the sand-shooting nozzle 8 is at a set distance from the lower end face of the guide plate 9; open An air pump connected to the upper part of the inner cavity of the sand cylinder 4 causes a large amount of gas to flow out through the sand cylinder 4, the sand-shooting funnel 5, the second sand-shooting channel 12, and the first sand-shooting channel 11 along the sand-shooting through hole 13 corresponding to the injection hole in the mold cavity. At this time, the coating sand agent flows out through the sand-shooting through hole 13 with the gas and enters the mold cavity, completing the sandblasting process. After the sandblasting is completed, the air pump is turned off, and the operator moves the sand-shooting nozzle 8 corresponding to the injection hole in the mold cavity upward until the sand-shooting nozzle 8 is in close contact with the lower end face of the guide plate 9, thus completing the reset of the sand-shooting nozzle 8 and the sealing of the sand-shooting through hole 13.

[0023] In this invention, the sand-shooting nozzle positioning part includes two sets of receiving grooves 14 evenly opened on the upper peripheral wall of the sand-shooting nozzle 8 and a support block 15 arranged radially in the receiving groove 14. Each set of receiving grooves 14 is provided with a set of guide rods 16, and the two ends of the guide rods 16 are respectively fixed to the two side walls of the corresponding receiving groove 14. The guide rods 16 pass through the inner end of the support block 15 and are rotatably connected to the support block 15. When the outer end of the support block 15 rotates upward along the corresponding guide rod 16, the outer side of the support block 15 contacts and presses the lower end face of the guide plate 9. Under the drive of the reaction force, the sand-shooting nozzle 8 moves downward along the sliding through hole 7, that is, the first sand-shooting channel 11 is formed between the sand-shooting nozzle 8 and the guide plate 9. When the outer end of the support block 15 rotates downward along the corresponding guide rod 16, the outer side of the support block 15 contacts and presses the upper end face of the connecting plate 6. Under the drive of the reaction force, the sand-shooting nozzle 8 moves upward along the sliding through hole 7 until the upper end face of the sand-shooting nozzle 8 presses against the lower end face of the guide plate 9, and the upper opening of the sand-shooting through hole 13 is blocked. In this embodiment, the support block 15 is semi-disc shaped; the upper end of the support block 15 is arc-shaped, and the lower end of the support block 15 is flat.

[0024] In order to achieve a better sealing effect, in this embodiment, both sides of each set of support blocks 15 are tightly attached to the inner side of the corresponding receiving groove 14. When the upper end face of the sand-shooting nozzle 8 presses against the lower end face of the guide plate 9, the upper opening of the sand-shooting through hole 13 is blocked, and the lower end face of the support block 15 simultaneously blocks the outer opening of the receiving groove 14.

[0025] In this embodiment, when the upper end face of the sand jet nozzle 8 is pressed against the lower end face of the guide plate 9, the inner end face of the support block 15 is flush with the upper opening of the receiving groove 14.

[0026] To facilitate the rotation of the support block 15, an annular spring 17 is coaxially mounted on the upper part of the sand-shooting nozzle 8. The annular spring 17 passes through the middle of the two sets of support blocks 15. The annular spring 17 is always in a stretched state. When the annular spring 17 is below the axis of the guide rod 16, the annular spring 17 contracts inward, and the middle of the support block 15 is subjected to the tension of the annular spring 17. The support block 15 rotates downward with the corresponding guide rod 16 as the fulcrum. The outside of the support block 15 contacts and presses the upper end face of the connecting plate 6. Driven by the reaction force, the sand-shooting nozzle 8 moves upward along the sliding through hole 7 until the upper end face of the sand-shooting nozzle 8 presses against the lower end face of the guide plate 9, and the upper opening of the sand-shooting through hole 13 is blocked. At the same time, the lower end face of the support block 15 blocks the outer opening of the receiving groove 14.

[0027] When the annular spring 17 is above the axis of the guide rod 16, the annular spring 17 contracts inward, and the middle part of the support block 15 is pulled by the annular spring 17. The support block 15 rotates upward with the corresponding guide rod 16 as the fulcrum, and the outer end of the support block 15 rotates upward along the corresponding guide rod 16. The outer end of the support block 15 contacts and squeezes the lower end face of the guide plate 9. Under the drive of the reaction force, the sand injection nozzle 8 moves downward along the sliding through hole 7, that is, the first sand injection channel 11 is formed between the sand injection nozzle 8 and the guide plate 9. A large amount of gas flows out through the sand cylinder 4, the sand injection funnel 5, the second sand injection channel 12, and the first sand injection channel 11 along the sand injection through hole 13 corresponding to the injection hole in the mold cavity. At this time, the coating sand agent flows out through the sand injection through hole 13 with the gas and enters the mold cavity, completing the sandblasting process. When the operator drives the jet nozzle 8 up and down, the support block 15 contacts the lower end face of the guide plate 9 or the upper end face of the connecting plate 6 respectively. In order to enable the support block 15 to rotate due to the upward reaction force of the support block 15 or the downward reaction force of the guide plate 9; in this embodiment, the contact positions of the upper and lower ends of each support block 15 with the lower end face of the corresponding guide plate 9 and the upper end face of the connecting plate 6 are located outside the guide rod 16.

[0028] In this embodiment, the outer side of the opening of the sand-shooting nozzle 8 is chamfered.

[0029] In order to avoid interference between the support blocks 15 of adjacent sand-shooting nozzles 8 during rotation, in this embodiment, each set of guide rods 16 is arranged in a direction parallel to the diagonal of the connecting plate 6.

[0030] In order to facilitate observation of the position of the guide rod 16 in the sand jet nozzle 8, in this embodiment, an observation groove 18 parallel to the axial direction of the guide rod 16 is provided at the opening of the lower end face of the sand jet nozzle 8.

[0031] During operation, when the sand-shooting nozzle 8 is in its initial state, the annular spring 17 is below the axis of the guide rod 16. The annular spring 17 contracts inward, and the outer end of the support block 15 rotates downward along the corresponding guide rod 16. The outer end of the support block 15 contacts and presses against the upper end face of the connecting plate 6. Driven by the reaction force, the sand-shooting nozzle 8 moves upward along the sliding through hole 7 until the upper end face of the sand-shooting nozzle 8 presses against the lower end face of the guide plate 9, and the upper opening of the sand-shooting through hole 13 is blocked. At the same time, the lower end face of the support block 15 rotates to the outer opening of the receiving groove 14 to block it.

[0032] When sandblasting with the sand-shooting nozzle 8, the operator drives the nozzle downwards. Because the lower end of the support block 15 contacts the upper surface of the corresponding connecting plate 6 outside the guide rod 16, the connecting plate 6 is driven by the reaction force. The outer end of the support block 15 rotates upward along the corresponding guide rod 16 until the annular spring 17 is above the guide rod 16. The annular spring 17 retracts inward, and the sand injection nozzle 8 moves downward along the sliding through hole 7, that is, the first sand injection channel 11 is formed between the sand injection nozzle 8 and the guide plate 9.

Claims

1. A universal sand-shooting plate device, characterized in that: The device includes a connecting plate (6) located on the lower end face of the opening of the sand-shooting funnel (5) and a guide plate (9) located in the inner cavity of the sand-shooting funnel (5) and parallel to the connecting plate (6). Several columns (10) are vertically arranged between the connecting plate (6) and the guide plate (9). Several sliding through holes (7) are evenly opened on the upper end face of the connecting plate (6). The sliding through holes (7) are arranged in a matrix. A sand-shooting nozzle (8) is coaxially arranged in each group of sliding through holes (7). The sand-shooting nozzle (8) is coaxially opened with a sand-shooting through hole (13). The sand-shooting nozzle (8) passes through the sliding through hole (7). It is slidably connected to the connecting plate (6) in the upper and lower parts; each set of sand-shooting nozzles (8) is provided with a sand-shooting nozzle positioning part. When the sand-shooting nozzle (8) moves upward, the upper end face of the sand-shooting through hole (13) is in close contact with the guide plate (9). The sand-shooting nozzle positioning part keeps the sand-shooting nozzle (8) and the lower end face of the guide plate (9) in close contact, and the sand-shooting through hole (13) is blocked. When the sand-shooting nozzle positioning part moves downward, a gap appears between the upper opening of the sand-shooting through hole (13) and the guide plate (9). The sand-shooting nozzle positioning part keeps the sand-shooting nozzle (8) and the guide plate (9) at a set distance, and the sand-shooting through hole (13) is open.

2. The universal sand-shooting plate device according to claim 1, characterized in that: The sand-shooting nozzle positioning part includes two sets of receiving grooves (14) evenly opened on the upper peripheral wall of the sand-shooting nozzle (8) and a support block (15) arranged radially in the receiving groove (14) on the upper part. Each set of receiving grooves (14) is provided with a set of guide rods (16), and the two ends of the guide rods (16) are respectively fixed to the two side walls of the corresponding receiving grooves (14); the guide rods (16) pass through the inner end of the support block (15) and are rotatably connected to the support block (15).

3. The universal sand-shooting plate device according to claim 2, characterized in that: The support block (15) is semi-circular in shape; the upper end of the support block (15) is arc-shaped, and the lower end of the support block (15) is flat.

4. The universal sand-shooting plate device according to claim 3, characterized in that: Each set of support blocks (15) has its two sides tightly attached to the inner side of the corresponding receiving groove (14).

5. The universal sand-shooting plate device according to claim 3, characterized in that: When the upper end face of the jet nozzle (8) is pressed against the lower end face of the guide plate (9), the inner end face of the support block (15) is flush with the upper opening of the receiving groove (14).

6. The universal sand-shooting plate device according to claim 2, characterized in that: The upper part of the jet nozzle (8) is coaxially provided with a ring spring (17), and the ring spring (17) passes through the middle of the two sets of support blocks (15).

7. The universal sand-shooting plate device according to claim 2, characterized in that: The outer side of the opening of the sand-shooting nozzle (8) is chamfered.

8. The universal sand-shooting plate device according to claim 2, characterized in that: The guide rod (16) is arranged in a direction parallel to the diagonal of the connecting plate (6).

9. The universal sand-shooting plate device according to claim 2, characterized in that: The lower end face of the jet nozzle (8) is provided with an observation groove (18) that is parallel to the axial direction of the guide rod (16).

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