Demoulding device of precoated sand core shooter

Abstract

The invention relates to the technical field of casting production, in particular to a precoated sand core shooter demolding device which comprises a supporting mechanism, a sand storage cavity is fixedly mounted at the top of the front end of the supporting mechanism, a sand shooting head is movably mounted at the rear end of the sand storage cavity, and the supporting mechanism comprises a synchronous positioning part and a collecting device. The synchronous positioning component comprises an alignment device, a synchronizing device and an auxiliary device, the auxiliary device is fixedly installed at the front end of the synchronizing device, the rear end of the synchronous positioning component is fixedly installed at the front end of the synchronizing device, and the synchronizing device comprises an outer end support, a first guide rail, an extension plate, a first winding wheel, a first gear, a connecting rope, a first auxiliary roller and a supporting top frame. The first guide rails are fixedly mounted at four corners of the front end of the outer-end support, and the extension plate is fixedly mounted in the center of the bottom end of the outer-end support. Through the arrangement of the supporting mechanism, the purposes that the precoated sand core shooter conducts synchronous mold cleaning and guiding type residue conveying are achieved.

Description

Technical Field

[0001] This invention relates to the field of casting production technology, specifically to a demolding device for a coated sand core shooter. Background Technology

[0002] The coated sand core shooter is a machine that uses coated sand as raw material and the principle of hot core box to make coated sand molds. The raw material for making coated sand cores is phenolic resin coated sand. Its characteristics include high production efficiency, accurate dimensions, smooth appearance, and the ability to produce castings with relatively complex internal cavities. In recent years, it has been favored by many foundry companies.

[0003] Application No. CN202011298268.X discloses a core shooter for casting. Through a set of through holes A and B, which are arranged vertically at the center, when the drive motor rotates the rotating rod, the connecting rod within the through holes A and B drives the cleaning plate to perform thorough cleaning within the hopper, enhancing the cleaning effect. To prevent the connecting rod from breaking under stress, a protective sleeve is fitted between the contact surface of the connecting rod and the rotating rod. A motor serves as the output source, driving the rotating shaft to rotate. The rotating shaft drives the connecting plate, which in turn drives the crossbar. Since the crossbar is fixedly connected to rack a, and rack a is meshed with rack b, rack b drives the cleaning head to perform linear reciprocating motion within the inner cavity of the sand-shooting cylinder, achieving the effect of cleaning residual sand from the inner wall.

[0004] Although existing technology can clean the inner cavity of the sand-shooting cylinder, when using coated sand core shooters on the market, sand residue remains on the inner wall of the mold. When sand is shot into the mold again, the sand will not be tightly adsorbed or will fall off. As a result, existing coated sand core shooters cannot achieve the purpose of synchronous mold cleaning and guided conveying of residue. Therefore, an improved device is needed to address the above problems. Summary of the Invention

[0005] To address the problems in the prior art, the present invention provides a demolding device for a coated sand core shooting machine.

[0006] The technical solution adopted by the present invention to solve its technical problem is: a demolding device for a coated sand core shooting machine, including a support mechanism, a sand storage cavity is fixedly installed at the top front end of the support mechanism, and a sand shooting head is movably installed at the rear end of the sand storage cavity through a conveying pipe. The support mechanism includes a synchronous positioning component and a collection device located below the synchronous positioning component.

[0007] The synchronization positioning component includes an auxiliary device, an alignment device, and a synchronization device arranged sequentially from left to right.

[0008] The auxiliary device includes a second mold base fixedly connected to the support mechanism. The top of the second mold base is rotatably connected to symmetrically arranged second auxiliary rollers. A mold is fixedly installed in the middle of the second mold base. Extension frames are fixedly installed on both sides of the mold. Each extension frame has a sliding groove on the side facing the alignment device. A support crossbeam is slidably connected inside the sliding groove. A connecting rope is provided between the support crossbeam and the second auxiliary rollers. Pulling the connecting rope causes the support crossbeam to slide up and down along the sliding groove. A sweeping wheel is rotatably connected inside the support crossbeam. Connectors arranged in an array are fixedly connected to the outer wall of the sweeping wheel. A cleaning brush is provided inside the connector. A first pressure sensor for detecting the deformation of the cleaning brush is provided at the connection between the cleaning brush and the connector.

[0009] The sweeping wheel has two ends that protrude through the support crossbeam, and two ends of the sweeping wheel are fixedly connected to a second gear, which meshes with a second rack fixedly connected to the second mold base.

[0010] The sand-shooting head includes a metering chamber, a second pressure sensor is fixedly connected to the inner bottom of the metering chamber, a sand-shooting tube is fixedly connected to the bottom of the metering chamber, and a sand-shooting air pipe is provided on the outer wall of the sand-shooting tube.

[0011] Preferably, the synchronization device includes an outer end bracket, a first guide rail, an extension plate, a first take-up wheel, a first gear, a connecting rope, a first auxiliary roller, and a support top frame. The first guide rail is fixedly installed at the four corners of the outer end bracket. The extension plate is fixedly installed at the bottom of the outer end bracket. The first gear is rotatably connected to a connecting frame on the end of the extension plate away from the outer end bracket via a rotating rod. The two ends of the rotating rod pass through the connecting frame and are fixedly connected to the first take-up wheel respectively. The connecting rope is fixedly connected to the outer ring of the first take-up wheel. The support top frame is symmetrically fixedly installed at the top of the extension plate, and the support top frame is located at the rear end of the first gear. The first auxiliary roller is rotatably installed inside the top of the support top frame.

[0012] Preferably, the alignment device includes a hydraulic cylinder, a first rack, a positioning ring, and a first mold base. The fixed end of the hydraulic cylinder is fixedly connected to the outer end bracket. The first mold base is fixedly installed on the telescopic end of the hydraulic cylinder. The first rack is fixedly installed at the bottom center of the first mold base. The positioning ring is fixedly installed on the rear end of the first mold base.

[0013] Preferably, the collecting device includes a push plate, a second guide rail, a first piston rod, a second piston rod, a U-shaped air cylinder, a support base, and a concentrating cavity. The support base is fixedly connected to the bottom of the support mechanism. The concentrating cavity is fixedly installed at the bottom of the front end of the support base. The U-shaped air cylinder is symmetrically fixedly installed inside the rear end of the support base. The second piston rod and the first piston rod are slidably inserted into the front end of the U-shaped air cylinder, with the second piston rod located above the first piston rod. The push plate is slidably connected to the second guide rail and is fixedly connected to the end of the first piston rod away from the U-shaped air cylinder. The second guide rail is fixedly installed on both sides inside the support base.

[0014] Preferably, the first mold base is slidably sleeved on the first guide rail, the first rack meshes with the first gear, the second mold base is fixedly installed at the front end of the first guide rail, the end of the connecting rope away from the supporting top frame is fixedly installed on the top of the supporting cross frame, and the outer end bracket and the second mold base are respectively fixedly installed on the top rear end and front end of the supporting base.

[0015] Preferably, a T-shaped locking key is fixedly installed on the front end of the second piston rod, and a rotating groove adapted to the T-shaped locking key is opened on the rear end of the positioning ring.

[0016] Preferably, the second auxiliary roller is vertically aligned with the support crossbeam, the cleaning brush on the sweeping roller is in contact with the inside of the mold, and the front end of the support crossbeam is fixedly equipped with a movable key that is slidably connected to the slide groove.

[0017] Preferably, the U-shaped air cylinder is hollow inside, and a sealed cavity is formed between the second piston rod, the U-shaped air cylinder and the first piston rod. The front end of the support base is provided with a release groove, and the release groove is vertically aligned with the inside of the central cavity.

[0018] Preferably, the support base further includes a vacuum cleaner, an alignment sealing plate, an L-shaped connecting frame, a motor, a guide sleeve, a third rack, and a third gear. The motor is fixedly installed at the bottom front end of the support base, the third gear is fixedly installed on the drive shaft of the motor, the guide sleeve is fixedly installed at both ends of the bottom of the support base near the motor, the third rack is slidably inserted into the inside of the guide sleeve, the motor is fixedly installed on the end of the third rack away from the third gear, the alignment sealing plate is fixedly installed on the top of the L-shaped connecting frame, and the vacuum cleaner is fixedly installed at the bottom inside the alignment sealing plate.

[0019] Preferably, a push-button switch is fixedly installed on the surface of the L-shaped connecting bracket near the third gear, and the push-button switch is horizontally aligned with the outer side of the support base. The vacuum cleaner is electrically connected to the push-button switch, and the third rack meshes with the third gear.

[0020] The beneficial effects of this invention are:

[0021] The technical effects and advantages of this invention are as follows:

[0022] 1. The present invention enables the first mold base to move and indirectly drive the support crossbeam to slide precisely up and down on the mold surface through the first rack. The sweeping wheel can fit in contact with the mold surface, so that the sweeping wheel can clean the sand remaining on the mold surface in a directional manner. This completes the cleaning of the inside of the mold while the first mold base is open.

[0023] 2. When the first mold base moves to the rear end, the second piston rod can indirectly drive the push plate to move to the front end inside the support base. This allows the sand that has fallen to the bottom of the support base to be pushed to the front end in a guiding manner, thereby collecting the remaining fallen sand and completing the work of guiding and collecting the remaining sand.

[0024] 3. This invention utilizes a sweeping wheel and a metering chamber. The control system detects the movement of the support crossbeam towards the top of the second mold base. Based on the value of the first pressure sensor, it can determine the specific shape of the mold in the second mold base and the required amount of molding sand. When the molding sand enters the mold through the sand injection pipe, the control system detects the descent rate of the molding sand inside the metering chamber per unit time (i.e., the change in the value of the second pressure sensor per unit time) during different time periods. If the descent rate of the molding sand inside the metering chamber is lower than the set value per unit time, it indicates that the temperature of the mold is too high. If the descent rate of the molding sand inside the metering chamber is higher than the set value per unit time, it indicates that the pressure inside the mold is insufficient. The system also adjusts the airflow ejected from the sand injection pipe according to different situations.

[0025] 4. This invention, by setting up a sweeping wheel, causes the support frame to rotate during downward movement due to the influence of the second rack and second gear. The sweeping wheel drives the cleaning brush through the connector to clean the shell core remaining in the mold. At the same time, based on the value of the first pressure sensor set at the connection between the cleaning brush and the connector, the specific shape of the shell core can be determined. By comparing the specific shape of the shell core with the previously obtained mold shape, the burr information of the shell core edge can be obtained. This allows the subsequent grinding station to grind the shell core based on the obtained burr information, thereby improving the production efficiency of the shell core. Attached Figure Description

[0026] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0027] Figure 1 This is a three-dimensional structural diagram of the main body from a frontal perspective in this invention.

[0028] Figure 2This is a three-dimensional structural diagram of the support mechanism from a frontal perspective in this invention.

[0029] Figure 3 This is a three-dimensional structural diagram of the synchronous positioning component from the front view in this invention.

[0030] Figure 4 This is a three-dimensional structural diagram of the bottom end of the alignment device in this invention.

[0031] Figure 5 This is a three-dimensional structural diagram of the synchronization device from the front view in this invention.

[0032] Figure 6 This is a three-dimensional structural diagram of the auxiliary device from the front view in this invention.

[0033] Figure 7 This is a three-dimensional structural diagram of the collecting device from the front view in this invention.

[0034] Figure 8 This is a three-dimensional structural diagram of the support base from the front view in this invention.

[0035] Figure 9 This is a three-dimensional structural diagram of the bottom end of the support base in this invention.

[0036] Figure 10 This is a schematic diagram of the sweeping wheel in this invention.

[0037] Figure 11 This is a cross-sectional view of the sand-shooting head in this invention.

[0038] In the diagram: 1. Support mechanism; 2. Shot head; 3. Sand storage chamber; 4. Synchronous positioning component; 5. Collection device; 6. Alignment device; 7. Synchronization device; 8. Auxiliary device; 9. Hydraulic cylinder; 10. First rack; 11. Positioning ring; 12. First mold base; 13. Outer end bracket; 14. First guide rail; 15. Extension plate; 16. First winding wheel; 17. First gear; 18. Connecting rope; 19. First auxiliary roller; 20. Support top frame; 21. Second auxiliary roller; 22. Extension frame; 23. Second mold. 24. Second rack; 25. Second gear; 26. Support crossbeam; 27. Sweeping wheel; 28. Mold; 29. ​​Push plate; 30. Second guide rail; 31. First piston rod; 32. Second piston rod; 33. U-shaped air cylinder; 34. Support base; 35. Centralized cavity; 36. Vacuum cleaner; 37. Alignment sealing plate; 38. L-shaped connecting frame; 39. Motor; 40. Guide sleeve; 41. Third rack; 42. Third gear; 43. Connector; 44. Metering chamber; 45. Sand injection pipe; 46. Sand injection air pipe. Detailed Implementation

[0039] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort should fall within the scope of protection of the present application.

[0040] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0041] The invention will be further described below with reference to the accompanying drawings.

[0042] Example 1

[0043] like Figure 1 , Figure 2 , Figure 3 and Figure 5 As shown, a demolding device for a coated sand core shooter according to the present invention includes a support mechanism 1, a sand storage cavity 3 is fixedly installed on the top front end of the support mechanism 1, and a sand shooting head 2 is movably installed on the rear end of the sand storage cavity 3. The support mechanism 1 includes a synchronous positioning component 4 and a collection device 5 located below the synchronous positioning component 4.

[0044] The synchronous positioning component 4 includes an auxiliary device 8, an alignment device 6, and a synchronization device 7 arranged sequentially from left to right.

[0045] The synchronization device 7 includes an outer end bracket 13, a first guide rail 14, an extension plate 15, a first take-up wheel 16, a first gear 17, a connecting rope 18, a first auxiliary roller 19, and a support top frame 20. The first guide rail 14 is fixedly installed at the four corners of the outer end bracket 13, the extension plate 15 is fixedly installed at the bottom end of the outer end bracket 13, the first gear 17 is rotatably connected to the connecting frame on the end of the extension plate 15 away from the outer end bracket 13 through a rotating rod, the two ends of the rotating rod pass through the connecting frame and are fixedly connected to the first take-up wheel 16 respectively, the connecting rope 18 is fixedly connected to the outer ring of the first take-up wheel 16, the support top frame 20 is symmetrically fixedly installed at the top of the extension plate 15, and the support top frame 20 is located at the rear end of the first gear 17, and the first auxiliary roller 19 is rotatably installed inside the top of the support top frame 20.

[0046] like Figure 4 The alignment device 6 includes a hydraulic cylinder 9, a first rack 10, a positioning ring 11, and a first mold base 12. The fixed end of the hydraulic cylinder 9 is fixedly connected to the outer end bracket 13. The first mold base 12 is fixedly installed on the telescopic end of the hydraulic cylinder 9. The first rack 10 is fixedly installed at the bottom center of the first mold base 12. The positioning ring 11 is fixedly installed on the rear end of the first mold base 12. When the first mold base 12 moves to its extreme rear position, it will not contact the connecting rope 18, thus preventing interference between the connecting rope 18 and the first mold base 12.

[0047] like Figure 6 The auxiliary device 8 includes a second auxiliary roller 21, an extension frame 22, a second mold base 23, a second rack 24, a second gear 25, a support crossbeam 26, a sweeping wheel 27, and a mold 28. The mold 28 is fixedly installed at the rear center of the second mold base 23. The second auxiliary roller 21 is symmetrically rotated and installed at the top rear end of the second mold base 23. The extension frame 22 is fixedly installed on both sides of the mold 28. The second rack 24 is fixedly installed on both sides of the rear end of the second mold base 23, and the second rack 24 is located outside the extension frame 22. The front end of the support crossbeam 26 is slidably inserted into the rear end of the extension frame 22. The sweeping wheel 27 is rotatably installed inside the support crossbeam 26, and the second gear 25 is fixedly installed on both ends of the sweeping wheel 27. By vertically aligning the second auxiliary roller 21 with the support crossbeam 26, the connecting rope 18 can pull the support crossbeam 26 to slide up and down in a straight line.

[0048] like Figure 7The collecting device 5 includes a pusher plate 29, a second guide rail 30, a first piston rod 31, a second piston rod 32, a U-shaped air cylinder 33, a support base 34, and a concentrating cavity 35. The support base 34 is fixedly connected to the bottom of the support mechanism 1. The concentrating cavity 35 is fixedly installed at the bottom of the front end of the support base 34. The U-shaped air cylinder 33 is symmetrically fixedly installed inside the rear end of the support base 34. The second piston rod 32 and the first piston rod 31 are slidably inserted into the front end of the U-shaped air cylinder 33, with the second piston rod 32 located above the first piston rod 31. The pusher plate 29 is slidably connected to the second guide rail 30. The pusher plate 29 is fixedly connected to the end of the first piston rod 31 away from the U-shaped air cylinder 33. The second guide rail 30 is fixedly installed on both sides inside the support base 34. By sliding the pusher plate 29 onto the second guide rail 30, it is possible to prevent the pusher plate 29 from tilting when moving.

[0049] The hydraulic cylinder 9 is fixedly installed at the front center of the outer end bracket 13. The first mold base 12 is slidably sleeved on the first guide rail 14. The first rack 10 meshes with the first gear 17. The second mold base 23 is fixedly installed at the front end of the first guide rail 14. The end of the connecting rope 18 away from the support top frame 20 is fixedly installed on the top of the support cross frame 26. The outer end bracket 13 and the second mold base 23 are respectively fixedly installed on the top rear end and front end of the support base 34. The flip motor 39 is fixedly installed at the rear end of the outer end bracket 13 and the front end of the second mold base 23 respectively. The flip motor 39 is fixedly installed at both ends of the support base 34, so that the flip motor 39 can be started to drive the outer end bracket 13 and the second mold base 23 to rotate as a whole.

[0050] A T-shaped locking key is fixedly installed on the front end of the second piston rod 32, and a rotating groove adapted to the T-shaped locking key is opened on the rear end of the positioning ring 11 to avoid interference between the outer end bracket 13 and the second piston rod 32 when the outer end bracket 13 rotates.

[0051] The second auxiliary roller 21 is vertically aligned with the support crossbeam 26, the surface of the sweeping roller 27 is in contact with the inside of the mold 28, the rear end of the extension frame 22 is provided with a sliding groove, and the front end of the support crossbeam 26 is fixedly installed with a movable key to ensure that the support crossbeam 26 slides up and down in a straight line.

[0052] The interior of the U-shaped air cylinder 33 is hollow, and a sealed cavity is formed between the second piston rod 32, the U-shaped air cylinder 33 and the first piston rod 31. A release groove is provided at the front end of the interior of the support base 34, and the release groove is vertically aligned with the interior of the central cavity 35, so that the sand and gravel inside the support base 34 can be transported to the interior of the central cavity 35.

[0053] In use, the hydraulic cylinder 9 is first activated to move the first mold base 12 to the front end. The outer ring of the first mold base 12 slides onto the first guide rail 14, allowing the first mold base 12 to move in a straight line. When the first mold base 12 moves to the front end, it drives the first rack 10 to move on the top of the first gear 17, which in turn drives the first winding wheel 16 to rotate. This causes the first winding wheel 16 to wind up the connecting rope 18. At this time, the connecting rope 18 drives the support crossbeam 26 to move upward with the second auxiliary roller 21 as the base point. The support crossbeam 26 moves in the groove inside the rear end of the extension frame 22 through the movable key at the front end of the support crossbeam 26, ensuring that the support crossbeam 26 moves up and down in a straight line. During the movement of the support crossbeam 26, it drives the second gear 25. Moving along the surface of the second rack 24 causes the second gear 25 to rotate. A sweeping wheel 27 is fixedly installed between the two second gears 25, so that when the second gear 25 rotates, it drives the sweeping wheel 27 to rotate simultaneously. In this embodiment, the outer surface of the sweeping wheel 27 is provided with a cleaning brush. The cleaning brush adheres to the inner wall of the mold 28, so that when the supporting crossbeam 26 rises, it drives the sweeping wheel 27 to rotate on the surface of the mold 28, thereby removing sand and gravel from the inner wall of the mold 28. Then, when the first mold base 12 moves to its extreme position at the front end, it drives the supporting crossbeam 26 to rise to its extreme position. When the supporting crossbeam 26 rises to its extreme position, it is higher than the mold 28, preventing interference between the sweeping wheel 27 and the mold 28. Then, when the first... When mold base 12 and second mold base 23 are in contact, the interior of mold 28 can be sealed. At this time, the sand injection head 2 is controlled to be in contact with the top of the first mold base 12 and the second mold base 23, so that the sand injection head 2 can communicate with the interior of mold 28, thereby injecting the sand and gravel inside the sand storage cavity 3 into the interior of mold 28 to complete the casting work of mold 28. Afterwards, after cooling for a period of time, since the second mold base 23 and the front and rear ends of the outer end support 13 are respectively fixedly installed with a tilting motor 39, by starting the tilting motor 39, the outer end support 13 and the second mold base 23 are rotated vertically downwards, so that the excess sand and gravel inside mold 28 can be poured out, causing the sand and gravel to fall to the bottom of the interior of the support base 34. Then, the tilting motor 39 is started to reverse, so that... The flipping motor 39 drives the outer end bracket 13 and the second mold base 23 to flip vertically upwards. Then, the hydraulic cylinder 9 can be restarted, moving the first mold base 12 to the rear end. This allows the first rack 10 to pass over the top of the first gear 17 again, releasing the connecting rope 18 from the first winding wheel 16. As the first mold base 12 moves to the rear end, the connecting rope 18 slowly releases the support crossbar 26, causing it to move downwards. This allows the sweeping wheel 27 to clean the inner wall of the mold 28 again, improving its cleanliness. Simultaneously, as the first mold base 12 moves to the rear end, it also drives the second piston rod 32 into the U-shaped air cylinder 33, causing the first piston rod 31 to move the push plate 29 to the front end.By having the bottom end of the push plate 29 fit against the inner bottom end of the support base 34, the push plate 29 can push the sand and gravel that falls into the support base 34 forward to the release groove inside the support base 34. The sand and gravel can then be collected in the central cavity 35 for recycling. During use, when the outer end bracket 13 and the second mold base 23 rotate as a whole, the T-shaped locking key at the front end of the second piston rod 32 engages in the rotation groove inside the rear end of the positioning ring 11, allowing the outer end bracket 13 and the second mold base 23 to rotate synchronously. Furthermore, after rotation, the outer end bracket 13 and the second mold base 23 do not affect the first mold base 12's movement of the second piston rod 32 towards the rear end, thus completing the operation.

[0054] Example 2

[0055] Based on Example 1, such as Figure 8 and Figure 9 As shown, the support base 34 also includes a vacuum cleaner 36, an alignment sealing plate 37, an L-shaped connecting frame 38, a motor 39, a guide sleeve 40, a third rack 41, and a third gear 42. The motor 39 is fixedly installed at the bottom front end of the support base 34, the third gear 42 is fixedly installed at the bottom end of the motor 39, the guide sleeve 40 is fixedly installed at both ends of the support base 34 near the bottom of the motor 39, the third rack 41 is slidably inserted into the inside of the guide sleeve 40, the motor 39 is fixedly installed on the end of the third rack 41 away from the third gear 42, the alignment sealing plate 37 is fixedly installed on the top end of the L-shaped connecting frame 38, the vacuum cleaner 36 is fixedly installed at the bottom inside of the alignment sealing plate 37, a button switch is fixedly installed on the surface of the L-shaped connecting frame 38 near the third gear 42, and the button switch is horizontally aligned with the outer side of the support base 34. The vacuum cleaner 36 is electrically connected to the button switch, and the third rack 41 meshes with the third gear 42.

[0056] In implementing this embodiment, when the outer end bracket 13 and the second mold base 23 are tilted and dumping sand and gravel, dust will be generated. The motor 39 can be started to drive the third gear 42 to rotate. Through the meshing of the third gear 42 with the two third racks 41, the third racks 41 can be driven to move towards each other, thereby driving the alignment sealing plate 37 to move towards each other until it is in contact with the surface of the first mold base 12 and the second mold base 23, preventing dust from spreading. At the same time, when the L-shaped connecting frame 38 is in contact with the surface of the support base 34, the button on the L-shaped connecting frame 38 can be triggered to open. The vacuum cleaner 36 is electrically connected to the button switch, which can start the vacuum cleaner 36. Since the vacuum cleaner 36 is located below the first mold base 12 and the second mold base 23, it can absorb the dust generated when dumping sand and gravel, thus preventing the work site from becoming dirty. Conversely, the motor 39 can be restarted, which drives the third rack 41 to move outward, thereby separating the alignment sealing plate 37 from the first mold base 12 and the second mold base 23, preventing interference between the outer end bracket 13 and the second mold base 23 and the alignment sealing plate 37 when they rotate and reset.

[0057] Example 3

[0058] Although the above embodiment can clean the inside of the mold 28 while the first mold base 12 is opening, incomplete sand injection may occur during sand injection after the first mold base 12 and the second mold base 23 are closed. This affects the structure of the produced sand core, making it loose and not compact enough. The quality of the sand core directly affects the quality of the casting product. Therefore, modifications are made to the technical solution based on Embodiment 1. The modified technical solution is as follows.

[0059] like Figure 10 and Figure 11 As shown, a demolding device for a coated sand core shooter includes a support mechanism 1. A sand storage cavity 3 is fixedly installed at the top front end of the support mechanism 1, and a sand shooting head 2 is movably installed at the rear end of the sand storage cavity 3 through a conveying pipe. The support mechanism 1 includes a synchronous positioning component 4 and a collection device 5 located below the synchronous positioning component 4.

[0060] The synchronous positioning component 4 includes an auxiliary device 8, an alignment device 6, and a synchronization device 7 arranged sequentially from left to right.

[0061] The auxiliary device 8 includes a second mold base 23 fixedly connected to the support mechanism 1. The top of the second mold base 23 is rotatably connected to symmetrically arranged second auxiliary rollers 21. A mold 28 is fixedly installed in the middle of the second mold base 23. Extension frames 22 are fixedly installed on both sides of the mold 28. The side of the extension frame 22 facing the alignment device 6 is provided with a sliding groove. A support crossbeam 26 is slidably connected inside the sliding groove. A connecting rope 18 is provided between the support crossbeam 26 and the second auxiliary rollers 21. Pulling the connecting rope 18 causes the support crossbeam 26 to slide up and down along the sliding groove. A sweeping wheel 27 is rotatably connected inside the support crossbeam 26. Connecting heads 43 arranged in an array are fixedly connected to the outer wall of the sweeping wheel 27. A cleaning brush is provided inside the connecting head 43. A first pressure sensor for detecting the deformation of the cleaning brush is provided at the connection between the cleaning brush and the connecting head 43.

[0062] The two ends of the sweeping wheel 27 extend through the support crossbeam 26, and the two ends of the sweeping wheel 27 are fixedly connected to the second gear 25. The second gear 25 meshes with the second rack 24 fixedly connected to the second mold base 23.

[0063] The sand-shooting head 2 includes a metering chamber 44, a second pressure sensor is fixedly connected to the inner bottom of the metering chamber 44, a sand-shooting tube 45 is fixedly connected to the bottom of the metering chamber 44, and a sand-shooting air pipe 46 is provided on the outer wall of the sand-shooting tube 45.

[0064] The first mold base 12 and the second mold base 23 are equipped with electric heating devices inside, and the sand-shooting pipe 45 is equipped with a stop valve inside. In the initial state, the stop valve inside the sand-shooting pipe 45 is closed, and there is no molding sand inside the metering chamber 44.

[0065] In use, the control system activates the electric heating devices inside the first mold base 12 and the second mold base 23, which heat the mold base 12 and the second mold base 23. At this time, the first mold base 12 and the second mold base 23 are in the open mold state. When the temperature of the first mold base 12 and the second mold base 23 reaches the set value, the control system controls the hydraulic cylinder 9 to extend. The extension end of the hydraulic cylinder 9 pushes the first mold base 12 to move towards the second mold base 23. During the movement of the first mold base 12, the first mold base 12 drives the first rack 10 at the bottom to move synchronously. Since the first rack 10 meshes with the first gear 17, the first gear... During the movement of the rack 10, the first gear 17 is synchronously driven to rotate. The first gear 17 drives the first take-up wheel 16 to rotate via the rotating rod. The first take-up wheel 16 winds up the connecting rope 18. Since the connecting rope 18 is fixedly connected to the top of the support frame 26 through the intermediate transfer of the first auxiliary roller 19 and the second auxiliary roller 21, and since the support frame 26 is initially located at the bottom of the second mold base 23, during the winding of the connecting rope 18 by the first take-up wheel 16, the connecting rope 18 drives the support frame 26 to move towards the top of the second mold base 23. Due to the internal sweeping wheel 27 of the support frame 26 and the second gear... 25 is fixedly connected, and the second gear 25 meshes with the second rack 24, causing the support crossbeam 26 to rotate during movement, thus causing the sweeping wheel 27 to rotate. Since the outer wall of the sweeping wheel 27 is fixedly connected with an array of staggered connectors 43, and each connector 43 contains a cleaning brush, a first pressure sensor is located at the connection point between the cleaning brush and the connector 43 to detect the deformation of the cleaning brush. Initially, the cleaning brush is in contact with the second mold base 23, so during the rotation of the sweeping wheel 27, the connecting head 43 drives the cleaning brush to rotate. The control system detects the movement of the support crossbeam 26... During the movement towards the top of the second mold base 23, the value of the first pressure sensor installed at the connection point between the cleaning brush and the connector 43 can determine the specific shape of the mold 28 in the second mold base 23. This allows the system to determine the amount of molding sand required for the sandblasting process of the mold 28 and the time required to complete the sandblasting. Simultaneously, the control system can divide the mold 28 into equidistant intervals of different sizes based on the detected shape of the mold 28. The time required for the molding sand in the mold 28 to be completely blasted is also divided into different time periods based on the different size intervals, thereby determining the amount of molding sand used in different time periods.

[0066] When the support frame 26 moves to the top of the extension frame 22, the first mold base 12 and the second mold base 23 complete the mold closing. At this time, the control system determines the amount of molding sand required for the mold 28 based on the specific shape of the mold 28 in the second mold base 23 detected by the cleaning brush. Based on the amount of molding sand required for the mold 28, the control system controls the operation of the sand conveying assembly in the sand storage cavity 3. The sand conveying assembly includes an auger. The sand conveying assembly transports the molding sand in the sand storage cavity 3 to the inside of the metering cavity 44 through the conveying pipe. Since the inside of the sand injection head 2 is equipped with a second pressure sensor, the amount of molding sand entering the metering cavity 44 can be obtained by detecting the pressure value detected by the second pressure sensor. When the pressure value detected by the second pressure sensor corresponds to the amount of molding sand required for the mold 28, the control system controls the sand conveying assembly to stop operating. After that, the control system controls the sand injection pipe 45 on the sand injection head 2 to fit with the filling port on the first mold base 12 and the second mold base 23, so that the sand injection head 2 can communicate with the inside of the mold 28.

[0067] Subsequently, the control system controls the opening and closing valve on the sand-shooting pipe 45 and the opening of the sand-shooting air pipe 46. The sand-shooting air pipe 46 is connected to an external air source, and the flow rate of the airflow ejected from the sand-shooting air pipe 46 is adjustable. At this time, the airflow ejected from the sand-shooting air pipe 46 is at the initial set value. After the opening and closing valve is opened, the molding sand inside the metering chamber 44 enters the mold 28 through the sand-shooting pipe 45. At the same time, the control system detects the descent rate of the molding sand inside the metering chamber 44 per unit time (i.e., the numerical change of the second pressure sensor per unit time) when the sand-shooting pipe 45 sprays into the mold 28 at different time periods. If the metering time is within the specified range... If the descent speed of the molding sand inside cavity 44 is lower than the set value, it indicates that the temperature of mold 28 is too high, and the molding sand has already solidified before reaching the corners of mold 28. At this time, the control system controls the electric heating devices inside mold 28 of the first mold base 12 and the second mold base 23 to reduce the operating frequency, thereby reducing the temperature inside mold 28. At the same time, the control system controls the airflow speed ejected from the sand injection pipe 46 to increase, thereby increasing the speed at which the molding sand enters the mold 28, which can impact the blocked area, allowing the molding sand to penetrate the blocked area and fill the corners of mold 28.

[0068] If the descent speed of the molding sand inside the metering cavity 44 is higher than the set value within a unit time, it indicates that the pressure inside the mold 28 is insufficient, resulting in a lower pressure environment inside the mold 28. Since the flow speed of the molding sand is proportional to the pressure difference, when there is air leakage inside the mold 28, the pressure inside the mold 28 will decrease, thereby increasing the pressure difference with the environment and accelerating the flow speed of the molding sand. At this time, the control system controls the hydraulic cylinder 9 to extend further, so that the first mold base 12 and the second mold base 23 fit more tightly, avoiding air leakage. At the same time, the control system controls the flow rate of the air jet from the sand-shooting pipe 46 proportionally according to the additional extension of the hydraulic cylinder 9, thereby ensuring the pressure between the first mold base 12 and the second mold base 23.

[0069] If the fit between the first mold base 12 and the second mold base 23 is tight enough, but the descent speed of the molding sand inside the metering cavity 44 is still higher than the set value per unit time, it indicates that the sealing ring between the first mold base 12 and the second mold base 23 is damaged, causing the mold 28 to be in a state of constant air leakage. At this time, the control system controls all devices to return to the initial position and issues an alarm to remind the staff to replace the sealing ring between the first mold base 12 and the second mold base 23.

[0070] After the molding sand is injected, the control system controls the sand injection head 2 to disengage from the first mold base 12 and the second mold base 23. Then, the control system controls the flipping motor 39 to start, causing the first mold base 12 and the second mold base 23 to rotate 180°, thereby allowing the excess molding sand inside the mold 28 to be poured out, leaving only the shell core inside the mold 28. Then, the control system controls the flipping motor 39 to drive the first mold base 12 and the second mold base 23 to rotate 180° in opposite directions, so that the tops of the first mold base 12 and the second mold base 23 are vertically upward again.

[0071] The control system then controls the hydraulic cylinder 9 to retract, which in turn moves the first mold base 12 to the rear end. This causes the first rack 10 to drive the first gear 17 to reverse, resulting in the first take-up wheel 16 releasing the connecting rope 18. The support frame 26 then moves downwards under its own weight. In this embodiment, after the first mold base 12 separates from the second mold base 23, the shell core remains in the mold 28 on the second mold base 23. During the downward movement of the support frame 26, the sweeping wheel 27 rotates due to the influence of the second rack 24 and the second gear 25. The sweeping wheel 27 drives the cleaning brush through the connector 43 to clean the shell core remaining in the mold 28. During the cleaning process, a first sensor is installed at the connection between the cleaning brush and the connector 43, and the control system detects this sensor. As the support frame 26 moves towards the top of the second mold base 23, the value of the first pressure sensor at the connection between the cleaning brush and the connector 43 can determine the specific shape of the shell core. By comparing the specific shape of the shell core with the previously obtained shape of the mold 28, the burr information of the shell core edge can be obtained. In this embodiment, the shell core removed from the mold 28 is to be conveyed by the conveying mechanism to the subsequent grinding station. The grinding station grinds the burr on the edge of the shell core. After obtaining the burr information of the shell core edge, the control system controls the clamping device to clamp the shell core onto the conveying mechanism. The conveying mechanism includes a conveyor belt. The conveying mechanism moves the shell core to the grinding station. The grinding station grinds the shell core according to the obtained burr information of the shell core edge, thereby improving the production efficiency of the shell core.

[0072] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A demolding device for a coated sand core shooter, comprising a support mechanism, wherein a sand storage cavity is fixedly installed at the top front end of the support mechanism, and a sand shooting head is movably installed at the rear end of the sand storage cavity via a conveying pipe, characterized in that: The support mechanism includes a synchronous positioning component and a collection device located below the synchronous positioning component; The synchronization positioning component includes an auxiliary device, an alignment device, and a synchronization device arranged from left to right; The auxiliary device includes a second mold base fixedly connected to the support mechanism. The top of the second mold base is rotatably connected to symmetrically arranged second auxiliary rollers. A mold is fixedly installed in the middle of the second mold base. Extension frames are fixedly installed on both sides of the mold. Each extension frame has a sliding groove on the side facing the alignment device. A support crossbar is slidably connected inside the sliding groove. A connecting rope is provided between the support crossbar and the second auxiliary rollers. Pulling the connecting rope causes the support crossbar to slide up and down along the sliding groove. A sweeping wheel is rotatably connected inside the support crossbar. Connectors arranged in an array are fixedly connected to the outer wall of the sweeping wheel. A cleaning brush is provided inside the connector. A first pressure sensor for detecting the deformation of the cleaning brush is provided at the connection between the cleaning brush and the connector. The sweeping wheel extends through the support crossbeam at both ends, and a second gear is fixedly connected to each end of the sweeping wheel. The second gear meshes with a second rack fixedly connected to the second mold base. The sand-shooting head includes a metering chamber, a second pressure sensor is fixedly connected to the inner bottom of the metering chamber, a sand-shooting tube is fixedly connected to the bottom of the metering chamber, and a sand-shooting air pipe is provided on the outer wall of the sand-shooting tube.

2. The demolding device for a coated sand core shooter according to claim 1, characterized in that: The synchronization device includes an outer end bracket, a first guide rail, an extension plate, a first take-up reel, a first gear, a connecting rope, a first auxiliary roller, and a support top frame. The first guide rail is fixedly installed at the four corners of the outer end bracket. The extension plate is fixedly installed at the bottom of the outer end bracket. The first gear is rotatably connected to a connecting frame on the end of the extension plate away from the outer end bracket via a rotating rod. The two ends of the rotating rod pass through the connecting frame and are fixedly connected to the first take-up reel respectively. The connecting rope is fixedly connected to the outer ring of the first take-up reel. The support top frame is symmetrically fixedly installed at the top of the extension plate, and the support top frame is located at the rear end of the first gear. The first auxiliary roller is rotatably installed inside the top of the support top frame.

3. The demolding device for a coated sand core shooter according to claim 1, characterized in that: The alignment device includes a hydraulic cylinder, a first rack, a positioning ring, and a first mold base. The fixed end of the hydraulic cylinder is fixedly connected to the outer end bracket. The first mold base is fixedly installed on the telescopic end of the hydraulic cylinder. The first rack is fixedly installed at the bottom center of the first mold base. The positioning ring is fixedly installed on the rear end of the first mold base.

4. The demolding device for a coated sand core shooter according to claim 1, characterized in that: The collecting device includes a pusher plate, a second guide rail, a first piston rod, a second piston rod, a U-shaped air cylinder, a support base, and a collection chamber. The support base is fixedly connected to the bottom of the support mechanism. The collection chamber is fixedly installed at the bottom of the front end of the support base. The U-shaped air cylinder is symmetrically fixedly installed inside the rear end of the support base. The second piston rod and the first piston rod are slidably inserted into the front end of the U-shaped air cylinder, with the second piston rod located above the first piston rod. The pusher plate is slidably connected to the second guide rail and is fixedly connected to the end of the first piston rod away from the U-shaped air cylinder. The second guide rail is fixedly installed on both sides inside the support base.

5. The demolding device for a coated sand core shooter according to claim 3, characterized in that: The first mold base is slidably sleeved on the first guide rail, the first rack meshes with the first gear, the second mold base is fixedly installed at the front end of the first guide rail, the end of the connecting rope away from the supporting top frame is fixedly installed on the top of the supporting cross frame, and the outer end bracket and the second mold base are respectively fixedly installed on the top rear end and front end of the supporting base.

6. The demolding device for a coated sand core shooter according to claim 4, characterized in that: A T-shaped locking key is fixedly installed on the front end of the second piston rod, and a rotating groove adapted to the T-shaped locking key is opened on the rear end of the positioning ring.

7. The demolding device for a coated sand core shooting machine according to claim 1, characterized in that: The second auxiliary roller is vertically aligned with the support crossbeam, the cleaning brush on the sweeping roller fits into the interior of the mold, and the front end of the support crossbeam is fixedly equipped with a movable key that is slidably connected to the slide groove.

8. The demolding device for a coated sand core shooter according to claim 4, characterized in that: The U-shaped air cylinder is hollow inside, and a sealed cavity is formed between the second piston rod, the U-shaped air cylinder and the first piston rod. The front end of the support base is provided with a release groove, and the release groove is vertically aligned with the inside of the central cavity.

9. A demolding device for a coated sand core shooter according to claim 4, characterized in that: The support base also includes a vacuum cleaner, an alignment sealing plate, an L-shaped connecting frame, a motor, a guide sleeve, a third rack, and a third gear. The motor is fixedly installed at the bottom front end of the support base, the third gear is fixedly installed on the drive shaft of the motor, the guide sleeve is fixedly installed at both ends of the bottom of the support base near the motor, the third rack is slidably inserted into the inside of the guide sleeve, the motor is fixedly installed on the end of the third rack away from the third gear, the alignment sealing plate is fixedly installed on the top of the L-shaped connecting frame, and the vacuum cleaner is fixedly installed at the bottom inside the alignment sealing plate.

10. A demolding device for a coated sand core shooter according to claim 9, characterized in that: A push-button switch is fixedly installed on the surface of the L-shaped connecting bracket near the third gear, and the push-button switch is horizontally aligned with the outer side of the support base. The vacuum cleaner is electrically connected to the push-button switch, and the third rack meshes with the third gear.

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