A device for preventing collision of foam stopper in a coreless molding

Abstract

The present application relates to the technical field of sand core processing, and particularly relates to a mold-free processing sand core anti-collision foam block device, which comprises a cleaning mechanism, a positioning mechanism and a gluing mechanism, the positioning mechanism comprises a foam block and a forming chill, the forming chill is attached to the side wall of the foam block, the side wall of the foam block is provided with an attached metal plate, the side wall of the attached metal plate is provided with a plurality of electromagnets, the attached metal plate and the forming chill are respectively located on the two sides of the foam block, and the electromagnets generate magnetic attraction to the forming chill. The foam block can protect the processing tool during processing, so that the processing tool is prevented from directly contacting the forming chill, the tool is effectively protected, the processing operation safety is ensured, the position is determined first, then the glue is brushed, and then the glue is accurately fixed, so that the position deviation is avoided, the glue loss caused by the position adjustment is avoided, the unstable gluing problem is avoided, and the quality of subsequent casting is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of sand core processing, in particular to a moldless processing sand core anti-collision foam block device. BACKGROUND

[0002] In the moldless processing of resin sand casting sand cores, it is often required by casting process to place a shaped chill at the position of the middle surface of the sand core. The traditional method is to divide the sand core into an upper half sand core and a lower half sand core, first make an upper half core box and a lower half core box, and then fill sand in the upper half core box and the lower half core box to make the upper half sand core and the lower half sand core respectively, and divide the shaped chill into two parts.

[0003] When the required sand core cannot be made separately, the lower half core is taken out through the lower core box, and the upper half sand core is shaped by moldless processing. During the shaping of the upper half sand core, the cutter of the machine tool is easily touched by the shaped chill, which causes damage to the cutter and increases the processing cost and reduces the overall quality. Therefore, an anti-collision device is needed to protect the cutter. SUMMARY

[0004] The purpose of the present application is to solve the problem of cutter damage in the prior art, and to provide a moldless processing sand core anti-collision foam block device.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical scheme: a moldless processing sand core anti-collision foam block device, comprising a cleaning mechanism, a positioning mechanism and a gluing mechanism, the positioning mechanism comprising a foam block and a shaped chill, the shaped chill being attached to the side wall of the foam block, the side wall of the foam block being provided with an attached metal plate, the side wall of the attached metal plate being provided with a plurality of electromagnets, the attached metal plate and the shaped chill being located on the two sides of the foam block respectively, the electromagnets generating magnetic attraction to the shaped chill, and the attached metal plate being made of memory alloy.

[0006] The gluing mechanism comprises a positioning box, the inner wall of the positioning box being fixed with a fixed capsule, the fixed capsule being made of elastic rubber material, the inside of the fixed capsule being filled with electrorheological fluid, the upper end of the gluing mechanism being fixed with a carrying frame, and the upper end of the carrying frame being provided with a glue brushing adjusting mechanism.

[0007] In the above-mentioned moldless processing sand core anti-collision foam block device, the cleaning mechanism comprises a cleaning detection box, the inner wall of the cleaning detection box is fixed with a detection capsule, the side wall of the cleaning detection box is fixed with a propelling rod, and the end of the propelling rod is fixed with a propelling plate.

[0008] In the above-mentioned mold-free processing sand core anti-collision foam block device, the upper end of the cleaning detection box is fixed with a water bucket, a water outlet pipe is inserted in the side wall of the water bucket, a valve is arranged in the water outlet pipe, and a drain pipe is inserted in the bottom of the cleaning detection box.

[0009] In the above-mentioned mold-free processing sand core anti-collision foam block device, the inside of the detection capsule is filled with electrorheological fluid, the detection capsule is made of elastic rubber material, and the push rod is an electric push rod.

[0010] In the above-mentioned mold-free processing sand core anti-collision foam block device, the glue brushing adjusting mechanism comprises a glue rack, two sets of matching mechanisms are fixed at the upper end of the glue rack, the matching mechanism comprises two mounting plates, an adjusting screw rod is threadedly connected through the side wall of each of the two mounting plates, an adjusting sliding block is threadedly connected through the side wall of each of the two adjusting screw rods, a vertical rod is fixed at the bottom of the adjusting sliding block, a sliding groove is formed at the upper end of the glue rack, the vertical rod penetrates through the sliding groove and abuts against the upper end of the mounting rack, a deformation belt is fixed on the side wall of a plurality of vertical rods, the deformation belt has an annular structure, and adjacent vertical rods are fixed with an electromagnetic plate.

[0011] In the above-mentioned mold-free processing sand core anti-collision foam block device, the end of the adjusting screw rod is rotatably connected with a driving block through a one-way bearing, a driving handle is fixed on the side wall of the driving block, a reinforcing cavity is formed at the lower part of the deformation belt, an annular adsorption disc is fixed at the bottom of the deformation belt, and the reinforcing cavity is filled with electrorheological fluid.

[0012] In the above-mentioned mold-free processing sand core anti-collision foam block device, an installation plate is fixed at the bottom of the glue rack, a spraying screw rod is threadedly connected through the side wall of the installation plate, a spraying sliding block is threadedly connected through the side wall of the spraying screw rod, a spray head is mounted at the bottom of the spraying sliding block, a glue tank is fixed at the upper end of the mounting rack, a pump body is arranged in the glue tank and connected with the spray head through a conveying pipe, a motor is fixed on the side wall of the installation plate, the output shaft of the motor is fixed with the spraying screw rod, and the spraying screw rod and the adjusting screw rod are reciprocating screw rods.

[0013] Compared with the prior art, the advantages of the present application are that:

[0014] 1. The foam block can protect the processing tool during the processing process, so that the processing tool is prevented from directly touching the forming chill, the tool is effectively protected, the processing operation safety is ensured, and the processing tool is prevented from being damaged.

[0015] 2. The consistency of the amount of glue used in the gluing process of the forming chill is ensured, so that the installation instability caused by poor gluing and pasting effect is avoided, the stability of the installation position of the forming chill is ensured, the consistency of the gluing at each position is improved, the accuracy of the installation position of the forming chill and the foam block is improved, and the casting quality is improved.

[0016] 3. The effective installation of the forming chill is realized by using the completely covered electromagnet, the position deviation is avoided, the accuracy of the installation position of the subsequent forming chill is ensured, and the overall casting quality is improved;

[0017] 4. The position is determined first, then the glue is brushed, and then the glue fixing is accurately carried out, so that the mispositioning is avoided, the loss of the glue caused by the position adjustment is avoided, the problem of unstable gluing is caused, and the quality of the subsequent casting is ensured;

[0018] 5. The glue is sprayed by using the spray head, the reciprocating movement of the spraying screw is driven by the motor, comprehensive coverage is realized, and the spraying amount of the glue has been determined, effective coverage can be realized by combining the self-flowing of the glue after spraying. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 A structure schematic view of a cleaning mechanism of a moldless processing sand core anti-collision foam block device is provided for the present application;

[0020] Figure 2 A positioning mechanism structure schematic view of a moldless processing sand core anti-collision foam block device is provided for the present application;

[0021] Figure 3 A foam block part structure schematic view of a moldless processing sand core anti-collision foam block device is provided for the present application;

[0022] Figure 4 A glue frame part structure schematic view of a moldless processing sand core anti-collision foam block device is provided for the present application;

[0023] Figure 5 A glue frame part bottom view of a moldless processing sand core anti-collision foam block device is provided for the present application.

[0024] In the figure: 1 cleaning detection box, 2 positioning box, 3 foam block, 4 forming chill, 5 attached metal plate, 6 electromagnet, 7 detection capsule, 8 advancing rod, 9 advancing plate, 10 water bucket, 11 water outlet pipe, 12 drain pipe, 13 fixed capsule, 14 carrying frame, 15 glue tank, 16 glue frame, 17 vertical rod, 18 electromagnetic plate, 19 shape change belt, 20 mounting plate, 21 adjusting screw, 22 adjusting sliding block, 23 driving block, 24 driving handle, 25 reinforcing cavity, 26 adsorption disc, 27 mounting plate, 28 spraying screw, 29 spraying sliding block, 30 spray head, 31 motor, 32 conveying pipe, 33 sliding groove. DETAILED DESCRIPTION

[0025] The following examples are for illustrative purposes only and are not intended to limit the scope of the present application.

[0026] EXAMPLE

[0027] Reference Figures 1-5 A moldless sand core anti-collision foam block device includes a cleaning mechanism, a positioning mechanism, and an adhesive application mechanism. The positioning mechanism includes a foam block 3 and a forming chill 4. The forming chill 4 is attached to the side wall of the foam block 3. The side wall of the foam block 3 abuts against a bonding metal plate 5. Multiple electromagnets 6 are installed on the side wall of the bonding metal plate 5. The bonding metal plate 5 and the forming chill 4 are located on opposite sides of the foam block 3. When the electromagnets 6 are energized, they generate magnetism to attract the forming chill 4. The bonding metal plate 5 is made of shape memory alloy. The bonding metal plate 5 can ensure that the electromagnets 6 are distributed throughout the foam block 3, thereby ensuring omnidirectional attraction of the forming chill 4, which makes it easier for the forming chill 4 to determine its installation position. The shape memory alloy design can facilitate its rapid recovery and is easy to handle foam blocks 3 of various shapes.

[0028] The gluing mechanism includes a positioning box 2, and a fixing bladder 13 is fixed to the inner wall of the positioning box 2. The fixing bladder 13 is made of elastic rubber material and is filled with electrorheological fluid. A mounting frame 14 is fixed to the upper end of the gluing mechanism, and a gluing adjustment mechanism is provided at the upper end of the mounting frame 14.

[0029] The cleaning mechanism includes a cleaning and testing box 1, with a testing chamber 7 fixed to the inner wall of the cleaning and testing box 1, a push rod 8 fixed to the side wall of the cleaning and testing box 1, and a push plate 9 fixed to the end of the push rod 8; a water bucket 10 is fixed to the upper end of the cleaning and testing box 1, and a water outlet pipe 11 is inserted into the side wall of the water bucket 10. The water bucket 10 is transparent and has scales on its surface for easy measurement of the water output. The water outlet pipe 11 is extendable for easy adjustment of the water outlet position. A valve is installed inside the water outlet pipe 11. A drain pipe 12 is inserted into the bottom of the cleaning and testing box 1; the testing chamber 7 is filled with electrorheological fluid and is made of elastic rubber material. The push rod 8 is an electric push rod. By utilizing the curing property of the electrorheological fluid when energized, the shape of the surface of the shaped chill is obtained, thereby obtaining the amount of adhesive applied and ensuring that each shaped chill 4 is uniformly glued and fixed.

[0030] The glue application adjustment mechanism includes a glue rack 16. Two sets of matching mechanisms are fixed to the upper end of the glue rack 16. The matching mechanisms include two mounting plates 20. Adjusting screws 21 are threaded through the side walls of the two mounting plates 20. Adjusting sliders 22 are threaded through the side walls of the two adjusting screws 21. A vertical rod 17 is fixed to the bottom of the adjusting slider 22. A sliding groove 33 is opened at the upper end of the glue rack 16. The vertical rod 17 passes through the sliding groove 33 and abuts against the upper end of the mounting frame 14. A deformation band 19 is fixed to the side walls of multiple vertical rods 17. The deformation band 19 has a ring structure. An electromagnetic plate 18 is fixed to adjacent vertical rods 17. The electromagnetic plate 18 is an electromagnet that can be energized to attract and form chilled iron 4, thereby realizing the self-fixation of the equipment.

[0031] The end of the adjusting screw 21 is rotatably connected to the drive block 23 via a one-way bearing. The drive handle 24 is fixed to the side wall of the drive block 23. A reinforcing cavity 25 is provided at the lower part of the deformation belt 19. An annular suction plate 26 is fixed to the bottom of the deformation belt 19. The interior of the reinforcing cavity 25 is filled with electrorheological fluid. The drive handle 24 drives the drive block 23 to deflect. The one-way bearing allows the drive block 23 to drive the adjusting screw 21 to rotate continuously in one direction without the drive block 23 needing to rotate the entire way, thereby achieving the adjustment of the adhesive width.

[0032] A mounting plate 27 is fixed to the bottom of the glue rack 16. A spraying screw 28 is threaded through the side wall of the mounting plate 27. A spraying slider 29 is threaded through the side wall of the spraying screw 28. A nozzle 30 is installed at the bottom of the spraying slider 29. A glue tank 15 is fixed to the upper end of the mounting frame 14. The glue tank 15 contains a pump body and is connected to the nozzle 30 through a delivery pipe 32. A motor 31 is fixed to the side wall of the mounting plate 27. The output shaft of the motor 31 is fixed to the spraying screw 28. Both the spraying screw 28 and the adjusting screw 21 are reciprocating screws. By utilizing the reciprocating motion characteristics of the reciprocating screws, uniform spraying and accurate position adjustment can be achieved.

[0033] In this invention, during practical application, the structural shape of the foam block 3 is determined by the installation position of the molded chill 4. The foam block 3 is then machined to match the sand core structure. The molded chill 4 is then placed inside the cleaning and testing chamber 1, with the contact surface between the molded chill 4 and the foam block 3 facing the testing chamber 7, and the other side abutting against the push plate 9. The push rod 8 is then activated, pushing the push plate 9 to move, causing the molded chill 4 to move and sink into the testing chamber 7. The testing chamber 7 deforms, encasing the sidewall of the molded chill 4, while the molded chill 4 is higher than the height of the testing chamber 7, thus exposing the upper part of the molded chill 4. Then, an electrorheological fluid is supplied to the inside of the testing chamber 7 to solidify it, thereby obtaining the surface shape of the molded chill 4. Then, the push plate 9 is energized, causing it to become magnetic and attract the molded chill 4. The push rod 8 then retracts a certain distance, creating a gap between the molded chill 4 and the solidified testing chamber 7. Then, the chamber is opened... Open the valve on the water pipe 11 to inject water into the gap until it is full, then stop injecting water. The water injection process will flush the forming chill. Record the scale of the water bucket 10 to obtain the amount of water injected. After proportionally reducing the amount of water injected, it will be the amount of glue required for the subsequent bonding of the forming chill 4 and the foam block 3. The amount of glue depends on the surface area of ​​the contact surface of the forming chill 4 and the thickness of the glue application. Therefore, under the premise of controlling the glue application thickness, the required amount of glue can be obtained stably based on the surface area, thereby ensuring the consistency of the amount of glue used in the bonding process of the forming chill 4. This avoids poor bonding and bonding results that lead to unstable installation and ensures the stability of the installation position of the forming chill 4. The improved consistency of glue application in each position can also improve the accuracy of the installation position of the forming chill 4 and the foam block 3, and improve the subsequent casting quality. Finally, open the drain pipe 12, and after power is cut off, the forming chill 4 can be released to drain the sewage. The forming chill 4 can then proceed to the next step.

[0034] Then, the metal plate 5 is bent and adjusted according to the shape of the foam block 3 so that the metal plate 5 is attached to the surface of the foam block 3. Then, the electromagnet 6 is energized so that the magnetic field of the electromagnet 6 covers all positions of the foam block 3. Then, the forming chill 4 is attached to the surface of the foam block 3 until the forming chill 4 finds the accurate installation position with the foam block 3. Then, the energizing strength of the electromagnet 6 is increased to improve the magnetic field, thereby ensuring the position of the forming chill 4, avoiding positional deviation, ensuring the accuracy of the subsequent installation position of the forming chill 4, and improving the overall casting quality.

[0035] Then, the combined foam block 3 and the forming chill 4 are inserted into the fixing bladder 13, with the forming chill 4 being inserted first and completely into the fixing bladder 13, while the foam block 3 is partially exposed. Then, the electrorheological fluid inside the fixing bladder 13 is energized to solidify it, thereby encapsulating and defining the position of the forming chill 4. Then, the energization of the electromagnet 6 is disconnected, causing it to lose its magnetism, allowing the foam block 3 to detach directly from the forming chill 4 and be removed from the fixing bladder 13. The recess formed by the fixing bladder 13 is the shape of the foam block 3, and the relative position of the forming chill 4 remains unchanged. This ensures accurate installation of the forming chill 4 when the foam block 3 is reinserted later, facilitating the application of adhesive. By first determining the position, then applying adhesive, and then accurately gluing and fixing, misalignment is avoided, as is the loss of adhesive during position adjustments, which could lead to unstable gluing and ensure the quality of subsequent casting.

[0036] After the foam block 3 is removed, the glue holder 16 can be placed in the recess. The length of the glue holder 16 matches the height of the foam block 3, so after adjusting the glue application width, it can ensure that the required glue application area of ​​the molding chill 4 is effectively covered with glue. Driving the adjusting screw 21 to rotate can adjust the spacing between the uprights 17, thereby adjusting the glue application width. At the same time, the deformation band 19 is stretched and deformed, thus encompassing the glue application area. The electromagnetic plate 18 is attracted to the surface of the molding chill 4 after being energized, effectively fixing its position and preventing changes in position. The device is self-fixed by magnetic adsorption, and the adsorption plate 26 can be attached to the surface of the molded chill 4 by pressing. When the electrorheological fluid inside the reinforcing cavity 25 is energized, the lower part of the reinforcing cavity 25 can be hardened and fixed, thus defining the glue application area. Then, the motor 31 and the pump inside the glue tank 15 are started to deliver glue. The glue is sprayed by the nozzle 30. The motor 31 drives the spraying screw 28 to move back and forth to achieve full coverage. The amount of glue sprayed is already determined. After spraying, the glue can achieve effective coverage by combining with its own flow.

[0037] Finally, the foam block 3 is put back into the recess of the fixing bag 13 so that the foam block 3 and the forming chill 4 are glued and fixed. After the fixing is completed, the whole is taken out.

[0038] Throughout the casting process, the lower half of the sand core is brought out through the lower core box, and the upper half of the sand core is formed through moldless processing. Foam block 3 and forming chill 4 are pre-placed at the core-separating surface of the lower core box, with half on the upper and half on the core-separating surface. Then, sand is filled into the frame on the upper plane of the lower core box, and the upper half of the sand core is processed into shape.

[0039] The upper sand core needs to be processed after the resin sand has hardened. During the processing, the foam block 3 can protect the processing tool and prevent it from directly contacting the forming chill 4, effectively protecting the tool and ensuring the safety of the processing operation.

[0040] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A moldless sand core anti-collision foam block device, comprising a cleaning mechanism, a positioning mechanism, and an adhesive application mechanism, characterized in that, The positioning mechanism includes a foam block (3) and a forming chill (4). The forming chill (4) is attached to the side wall of the foam block (3). The side wall of the foam block (3) abuts against a metal plate (5). Multiple electromagnets (6) are installed on the side wall of the metal plate (5). The metal plate (5) and the forming chill (4) are located on opposite sides of the foam block (3). When the electromagnets (6) are energized, they generate magnetism to attract the forming chill (4). The metal plate (5) is made of shape memory alloy. The gluing mechanism includes a positioning box (2), and a fixing bladder (13) is fixed on the inner wall of the positioning box (2). The fixing bladder (13) is made of elastic rubber material and is filled with electrorheological fluid. A mounting frame (14) is fixed at the upper end of the gluing mechanism, and a gluing adjustment mechanism is provided at the upper end of the mounting frame (14). The cleaning mechanism includes a cleaning detection box (1), a detection bladder (7) is fixed to the inner wall of the cleaning detection box (1), a push rod (8) is fixed to the side wall of the cleaning detection box (1), and a push plate (9) is fixed to the end of the push rod (8); a water bucket (10) is fixed to the upper end of the cleaning detection box (1), a water outlet pipe (11) is inserted into the side wall of the water bucket (10), a valve is provided inside the water outlet pipe (11), and a drain pipe (12) is inserted into the bottom of the cleaning detection box (1); The detection capsule (7) is filled with electrorheological fluid and is made of elastic rubber material. The push rod (8) is an electric push rod. The operating steps of this device include: Place the molded chill into the cleaning and testing chamber, with the contact surface between the molded chill and the foam block facing the testing chamber. Activate the push rod to push the push plate, causing the molded chill to move and sink into the testing chamber. When the molded chill is higher than the height of the testing chamber, energize the electrorheological fluid inside the testing chamber to solidify it and obtain the surface shape of the molded chill. The push plate generates magnetism when energized, attracting the molded chill. The push rod retracts, creating a gap between the molded chill and the testing chamber. Inject water into the gap through the water outlet pipe. Determine the amount of glue needed to bond the molded chill and the foam block according to the water volume. Then, assemble the molded chill and the foam block into a positioning mechanism. The positioning mechanism is embedded in the fixing bladder, the forming chill is completely embedded in it, and the foam block is partially exposed. The electrorheological fluid inside the fixing bladder is energized to solidify it and limit the position of the forming chill. The power supply to the electromagnet is disconnected, the foam block is removed from the side of the forming chill, and the fixing bladder forms a depression. Using the glue application adjustment mechanism on the mounting frame, glue is applied to the mating surfaces of the molded chill and foam block inside the fixation bladder according to the determined amount of glue used. Place the foam block back into the recess of the retaining bladder, glue the two together, and then remove the whole assembly to complete the assembly.

2. The anti-collision foam block device for moldless sand core processing according to claim 1, characterized in that, The glue application adjustment mechanism includes a glue rack (16), and two sets of matching mechanisms are fixed at the upper end of the glue rack (16). The matching mechanism includes two mounting plates (20). The side walls of the two mounting plates (20) are threadedly connected to adjusting screws (21). The side walls of the two adjusting screws (21) are threadedly connected to adjusting sliders (22). The bottom of the adjusting sliders (22) is fixed with a vertical rod (17). The upper end of the glue rack (16) is provided with a sliding groove (33). The vertical rod (17) passes through the sliding groove (33) and abuts against the upper end of the mounting frame (14). The side walls of multiple vertical rods (17) are jointly fixed with a deformation band (19). The deformation band (19) has a ring structure. The adjacent vertical rods (17) are all jointly fixed with an electromagnetic plate (18).

3. The anti-collision foam block device for moldless sand core processing according to claim 2, characterized in that, The end of the adjusting screw (21) is rotatably connected to the drive block (23) via a one-way bearing. The drive block (23) has a drive handle (24) fixed to its side wall. The lower part of the deformation belt (19) has a reinforcing cavity (25). The bottom of the deformation belt (19) has an annular adsorption plate (26) fixed to it. The interior of the reinforcing cavity (25) is filled with electrorheological fluid.

4. The anti-collision foam block device for moldless sand core processing according to claim 3, characterized in that, The bottom of the glue rack (16) is fixed with a mounting plate (27). A spraying screw (28) is threaded through the side wall of the mounting plate (27). A spraying slider (29) is threaded through the side wall of the spraying screw (28). A nozzle (30) is installed at the bottom of the spraying slider (29). A glue tank (15) is fixed at the upper end of the mounting frame (14). A pump body is installed inside the glue tank (15) and connected to the nozzle (30) through a delivery pipe (32). A motor (31) is fixed on the side wall of the mounting plate (27). The output shaft of the motor (31) is fixed to the spraying screw (28). Both the spraying screw (28) and the adjusting screw (21) are reciprocating screws.

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