Production and casting equipment for high-wear-resistance hammerhead
By using reaction liquid to soak the sand core and sawtooth structure in the sand casting equipment, the problem of low dust generation and efficiency during the sand drop process is solved, and an efficient and low dust drop process is achieved, and the uniformity and fineness of the sand particles are ensured.
Patent Information
- Application Number
- CN202411699012.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-26
- Publication Date
- 2025-02-28
- Estimated Expiration
- Not applicable · inactive patent
AI Technical Summary
In the existing sand casting technology, a large amount of dust and smoke are generated during the sand drop process, and a dust collector is required, and the sand drop efficiency is low.
A high wear-resistant hammer head production and casting equipment is designed, and the sand core is soaked by the reaction liquid. By reacting the reaction liquid with the adhesive in the sand, the adhesive is decomposed and dust generation is reduced. At the same time, the equipment has a built-in serrated structure, which can effectively crush the sand type and form uniform and fine sand particles.
Soaking the sand core through the reaction liquid reduces dust generation, reduces dependence on the dust collector, improves sand falling efficiency, and ensures the uniformity and fineness of the sand particles through the sawtooth structure.
Smart Images
Figure CN119525474A_ABST
Abstract
Description
Technical Field
[0001] The present application relates to the technical field of sand mold demoulding, and in particular to a high wear-resistant hammer head production casting equipment. Background Art
[0002] Sand casting is a process for producing castings by using raw sand as the main molding material to make a mold. The basic raw materials for making sand molds are casting sand and sand binder. In the sand casting process, firstly, a suitable wooden pattern is made according to the shape of the casting, and then a sand mold is made with the pattern and pre-prepared molding sand. The molten metal is poured into the sand mold cavity, and after the liquid metal cools and solidifies, the sand is removed from the sand mold to remove the casting.
[0003] Sand dropping is the process of breaking the mold after the mold is poured and cooled to a certain temperature to separate the casting from the molding sand. In the prior art, sand dropping is mainly achieved by the collision between the mold and the sand dropping machine. During the sand dropping process, a large amount of dust and smoke will be generated due to the operations of mold breaking and molding sand separation. Therefore, a dust collector needs to be configured during the sand dropping process. The dust collected by the dust collector also needs to be treated secondary. Summary of the invention
[0004] In order to improve the problem of dust treatment during the sand dropping process, the present application provides a high wear-resistant hammer head production casting equipment.
[0005] The present application provides a high wear-resistant hammer head production casting equipment adopts the following technical solution:
[0006] A high wear-resistant hammer head production casting equipment, comprising a sand falling device, the sand falling device comprising:
[0007] outer shell;
[0008] Inner shell; used to provide support for the sand mold;
[0009] A cylinder fixed above the outer shell, used to provide vibration for the sand mold;
[0010] The liquid inlet pipe is fixedly arranged in the outer shell and connected to the liquid storage tank for injecting the reaction liquid.
[0011] Optionally, the outer shell is fixedly connected to the inner shell; the inner shell is connected to the outer shell via a strip-shaped through hole on the peripheral side wall; a base is fixedly connected to the bottom of the inner shell, and an annular gap is provided between the inner shell and the base; and saw teeth are provided in the annular gap.
[0012] Optionally, it also includes a liquid outlet pipe; the liquid outlet pipe is fixedly connected to the outer shell; a liquid outlet valve plate is rotatably arranged in the liquid outlet pipe.
[0013] Optionally, a connecting beam is fixedly provided in the liquid outlet pipe, and an electromagnet 1 is provided on the connecting beam, and the electromagnet 1 magnetically attracts the liquid outlet valve plate to flip.
[0014] Optionally, the cylinder comprises:
[0015] Cylinder seat; the cylinder seat is vertically slidably arranged on the top of the outer shell; the cylinder seat adjusts the height of the cylinder by vertically sliding;
[0016] A piston rod; one end of the piston rod is slidably disposed in the cylinder seat;
[0017] Air pump; the air pump transmits gas to the cylinder seat through the solenoid valve.
[0018] Optionally, a motor is provided on the outer shell, and a lead screw is fixedly connected to the motor output shaft; the cylinder seat moves by cooperating with the lead screw thread transmission.
[0019] Optionally, a trigger chamber is provided at the end of the piston rod; an abutment rod and a contact piece are movably arranged in the trigger chamber; and the abutment rod can contact the contact piece during movement.
[0020] Optionally, a connecting groove is provided in the trigger chamber, and a connecting rod is fixedly connected to the contact piece; the connecting rod is slidably arranged in the connecting groove; a contact switch three is arranged in the connecting groove, and the contact switch three is connected to the motor.
[0021] Optionally, an electromagnet 2 for magnetically adsorbing the contact piece is fixedly disposed in the trigger chamber; the electromagnet 2 is connected to a contact switch 1, and the contact switch 1 is disposed on the piston rod.
[0022] Optionally, a contact switch 2 is further provided in the connecting groove, and the contact switch 2 connects the electromagnet 1 and the air pump.
[0023] In summary, the present application includes at least one of the following beneficial technical effects:
[0024] 1. Soaking the sand core in the reaction liquid can effectively decompose the binder in the sand core on the one hand, and reduce dust generation on the other hand, so that the sand falling process no longer depends on the dust collector, and comprehensively improve the sand falling efficiency.
[0025] 2. After the sand mold is broken, the sand blocks enter the outer shell through the annular gap, and the saw teeth further break the sand blocks into sand particles; the sand falling device can effectively break the sand mold into sand particles through the inner shell and sawtooth structure, ensuring the uniformity and fineness of the sand particles.
[0026] 3. The abutment rod at the bottom end of the piston rod plays a triggering role. When the sand mold collapses and causes the overall height to decrease, the contact of the abutment rod triggers the screw to rotate and drives the cylinder to move downward as a whole to contact the sand mold again. BRIEF DESCRIPTION OF THE DRAWINGS
[0027] Figure 1 It is a cross-sectional view of the sand falling device according to an embodiment of the present application.
[0028] Figure 2 It is a schematic diagram of the structure of the liquid outlet pipe of the embodiment of the present application.
[0029] Figure 3 It is a schematic diagram of the structure of the cylinder of an embodiment of the present application.
[0030] Figure 4 yes Figure 3 A magnified schematic diagram of center A.
[0031] Figure numerals: 1. outer shell; 11. inner shell; 12. support beam; 13. strip through hole; 14. base; 15. annular gap; 16. serration; 17. liquid outlet pipe; 18. liquid outlet valve plate; 19. connecting beam; 2. liquid outlet hole; 21. float; 22. connecting block; 23. tension spring; 24. cylinder seat; 25. piston rod; 26. lead screw; 27. clamp; 28. abutment rod; 29. trigger chamber; 3. reset spring 2; 31. contact piece; 32. connecting rod; 33. connecting groove; 34. reset spring 1; 35. chamfer; 36. liquid inlet pipe; 37. float groove. DETAILED DESCRIPTION
[0032] The following is combined with Figure 1-4 This application is described in further detail.
[0033] The embodiment of the present application discloses a high wear-resistant hammer head production casting equipment. The high wear-resistant hammer head production casting equipment includes a sand dropping device. The sand dropping device includes an outer shell 1 for placing a sand mold, a liquid injection mechanism for injecting liquid into the outer shell 1, and a vibration mechanism for disintegrating the sand mold. The liquid injection mechanism injects a reaction liquid into the outer shell 1, and the reaction liquid accelerates the disintegration of the sand mold by reacting with a binder in the sand mold. In one embodiment, the binder in the sand mold uses a magnesium phosphate binder, and the reaction liquid is selected as a calcium chloride solution.
[0034] The inner shell 11 is coaxially fixed inside the outer shell 1. Preferably, a plurality of support beams 12 connected to the inner shell 11 are fixed to the inner circumference of the outer shell 1 to provide support for the inner shell 11. The inner shell 11 has a circular cross section, and a plurality of strip-shaped through holes 13 are evenly distributed along the circumference of the inner shell 11 on the outer circumference of the inner shell 11, and the strip-shaped through holes 13 are arranged vertically. Specifically, the sand mold is placed in the inner shell 11, and the inner shell 11 is used to provide support for the sand mold; the strip-shaped through holes 13 are used to connect the outer shell 1 and the inner shell 11, so that the reaction liquid enters the inner shell 11 and contacts with the sand mold.
[0035] The inner shell 11 is in the shape of a circular tube; the bottom of the inner shell 11 is connected to a base 14 through a support rod. An annular gap 15 is formed between the base 14 and the inner shell 11; the bottom end surface of the inner shell 11 and the top surface of the base 14 are respectively uniformly distributed with a plurality of saw teeth 16 along their own circumference, and the saw teeth 16 are formed on the upper end surface and the lower end surface of the annular gap 15; the crushed sand blocks pass through the annular gap 15 from the inner shell 11 into the outer shell 1, and through the extrusion effect in the inner shell 11, the sand blocks are further crushed into sand particles after contacting the saw teeth 16.
[0036] A liquid outlet pipe 17 is fixedly connected to the bottom of the outer shell 1 for discharging the reaction liquid. Two liquid outlet valve plates 18 are rotatably arranged in the liquid outlet pipe 17. Specifically, a connecting beam 19 is fixedly arranged in the liquid outlet pipe 17 along its radial direction, and liquid outlet holes 2 are located on both sides of the connecting beam 19 in the liquid outlet pipe 17. The cross section of the liquid outlet valve plate 18 is semicircular, and a hinged part rotatably connected to the connecting beam 19 is fixedly arranged on the outer peripheral surface of the liquid outlet valve plate 18. Electromagnets 1 are fixedly arranged on the vertical side walls on both sides of the connecting beam 19, and metal sheets that can be magnetically adsorbed by the electromagnets 1 are fixedly arranged on the vertical side walls of the liquid outlet valve plate 18. When the electromagnets 1 are energized, the metal sheets are adsorbed to flip the liquid outlet valve plate 18 upward, and the liquid outlet valve plate 18 is rotated to a horizontal state so that the liquid outlet pipe 17 is in a closed state.
[0037] A connecting block 22 is fixedly provided at the bottom of the connecting beam 19. The connecting block 22 has a fan-shaped longitudinal section, and the top surface of the connecting block 22 is fixedly connected to the bottom surface of the connecting beam 19. The connecting block 22 has fan-shaped surfaces arranged obliquely on both sides. The fan-shaped surfaces on both sides of the connecting block 22 are respectively fixedly provided with tension springs 23 connected to the bottom surface of the liquid outlet valve plate 18; specifically, when the electromagnet is powered off, the tension spring 23 drives the fan-shaped valve plate to flip downward, so that the outer shell 1 is in a liquid outlet state.
[0038] The vibration mechanism includes a cylinder and a control component for controlling the vertical movement of the cylinder. The cylinder includes a cylinder seat 24 and a piston rod 25 slidably connected to the cylinder seat 24. A cylinder port for accommodating the piston rod 25 is provided at the end of the cylinder seat 24. The cylinder seat 24 is connected to a solenoid valve, which is connected to an air pump; the solenoid valve is used to transport and discharge the gas in the cylinder seat 24. The cylinder seat 24 is vertically slidably arranged above the outer shell 1. Specifically, a plurality of lead screws 26 are rotatably arranged on the top of the outer shell 1, and the lead screws 26 can be symmetrically or evenly distributed on the top surface of the outer shell 1. A motor is embedded in the inner wall of the outer shell 1, and the output shaft of the motor is coaxially connected to the lead screw 26 and controls the rotation of the lead screw 26. An annular clamp 27 is fixed on the circumferential side of the cylinder seat 24, and the lead screw 26 passes through the clamp 27 and is threadedly matched with the clamp 27.
[0039] A trigger chamber 29 is formed at the end of the piston rod 25. The end of the piston rod 25 is slidably connected to an abutment rod 28 along its axial direction, and the abutment rod 28 is slidably disposed in the trigger chamber 29. A return spring 23 is fixed in the trigger chamber 29, and the return spring 23 is fixedly connected to the abutment rod 28 to push the abutment rod 28 to return downward.
[0040] Two contact pieces 31 are provided in the trigger chamber 29 for radial sliding along the piston rod 25; the two contact pieces 31 are symmetrically arranged. Connecting rods 32 are fixedly arranged on the opposite outer sides of the two contact pieces 31. A connecting groove 33 for accommodating the connecting rod 32 is provided on the inner wall of the trigger chamber 29; the connecting rod 32 is slidably arranged in the connecting groove 33. A reset spring 1 34 is fixedly arranged on the inner wall of the trigger chamber 29, and the reset spring 1 34 is fixedly connected to the contact piece 31, and is used to drive the contact piece 31 to reset in the axial direction of the trigger chamber 29. An electromagnet 2 is fixedly arranged in the connecting groove 33, and a metal sheet that can be magnetically attracted to the electromagnet 2 is fixedly arranged at the end of the connecting rod 32; when the electromagnet 2 is energized, the contact piece 31 is moved away from the axial direction of the trigger chamber 29 by attracting the metal sheet. After the abutment rod 28 moves upward, it can contact the bottom surface of the contact piece 31; the top end of the abutment rod 28 is rounded, and the bottom of the side end surface of the contact piece 31 is provided with a chamfer 35 that can abut the rounded corner of the abutment rod 28; after the abutment rod 28 presses the contact piece 31 upward, it can push the contact piece 31 to reset in the direction close to the connecting rod 32.
[0041] Specifically, when the piston rod 25 moves to the end of the stroke, the abutment rod 28 at the end of the piston rod 25 contacts the sand core and is retracted into the trigger chamber 29; at the same time, the second electromagnet is powered off, and the contact piece 31 moves toward the central axis of the trigger chamber 29 under the action of the reset spring 1 34. After the piston rod 25 moves, its top end is located between the two contact pieces 31, so that the stroke of the contact piece 31 is limited. When the piston rod 25 moves to the end of the stroke, the abutment rod 28 does not contact the sand core due to the collapse of the sand core, and the two contact pieces 31 move to the end of the stroke without being blocked by the abutment rod 28; preferably, when the two contact pieces 31 move to the end of the stroke, the two contact pieces 31 are in contact.
[0042] The contact switch 1 for controlling the second electromagnet is arranged at the top of the outer peripheral surface of the piston rod 25. Specifically, when the piston rod 25 moves downward to the end of the stroke, the contact switch 1 at the top of the piston rod 25 moves into the cylinder port, the contact switch 1 is pressed and disconnected, and the second electromagnet is powered off; after the top of the piston rod 25 moves upward, the contact switch 1 leaves the cylinder port and resets, the contact switch 1 is closed, and the second electromagnet is powered on.
[0043] Contact switch 2 and contact switch 3 are arranged in the connecting groove 33; a protrusion that can press and push contact switch 2 or contact switch 3 to close is fixed on the outer peripheral surface of the connecting shaft. During the movement of the connecting rod 32, the protrusion can contact contact switch 2 or contact switch 3. Among them, contact switch 2 is electrically connected to electromagnet 1 and the air pump. During the movement of the connecting rod 32 toward the central axis of the trigger chamber 29, the protrusion contacts contact switch 2, contact switch 2 remains in a closed state, and electromagnet 1 and the air pump are both in an energized state. If the abutting rod 28 is in a pressing state when the piston rod 25 moves to the end of the stroke, that is, the contact piece 31 contacts the abutting rod 28, then contact switch 2 remains in a closed state, and contact switch 3 remains in an open state. Otherwise, the abutting rod 28 is not in a pressing state, that is, the contact piece 31 does not contact the abutting rod 28, then contact switch 2 is disconnected, and contact switch 3 is closed; electromagnet 1 is powered off and the liquid outlet valve plate 18 is flipped downward, while the air pump is powered off and the piston rod 25 is maintained at the end of the stroke.
[0044] The motor is connected to the contact switch three through the comparator and the relay; preferably, the motor is a stepper motor. Specifically, the control switch three is connected to the comparator through a protective resistor, and the other input end of the comparator is connected to the reference voltage. The output end of the comparator is connected to the relay coil, and the motor is connected to the normally open contact of the relay. Furthermore, when the contact switch three is disconnected, the circuit of the comparator connected to the control switch three is broken, the comparator sends a low level to the relay, and the motor is powered off; after the contact switch three is closed, the comparator detects that the input voltage is higher than the reference voltage, the comparator sends a high level to the relay, the relay controls the motor to open, the motor controls the lead screw 26 to rotate, and the cylinder seat 24 is lowered.
[0045] Furthermore, after the cylinder seat 24 moves downward until the piston rod 25 contacts the sand core again, the abutment shaft is pressed upward, and the chamfer 35 of the contact piece 31 pushes the contact piece 31 to move away from the central axis of the piston rod 25, so that the contact switch 2 is closed and the contact switch 3 is disconnected; the relay controls the motor to turn off, and the air pump and the electromagnet 1 are powered on. It should be noted that after the sand falling process is completed, it is necessary to control the motor drive shaft to rotate in the opposite direction to restore the cylinder seat 24 to its initial position.
[0046] The liquid injection mechanism includes a liquid inlet pipe 36 fixedly arranged in the outer shell 1; preferably, the liquid outlet of the liquid inlet pipe 36 faces the inner shell 11. The liquid inlet pipe 36 is connected to the liquid storage tank, and a liquid inlet pump is arranged on the connecting pipeline. The liquid inlet pump is connected to the contact switch 2, and a contact switch 4 is arranged on the connection circuit between the liquid inlet pump and the contact switch 2. A float groove 37 is arranged in the outer shell 1, and a float ball 21 is arranged vertically sliding in the float groove 37; preferably, a limit plate is fixedly arranged on the side wall of the float groove 37 along its height direction to prevent the float ball 21 from detaching. The contact switch 4 is arranged at the top of the float groove 37; the float ball 21 contacts the contact switch 4 after the liquid level rises to the top of the float groove 37. The contact switch 4 is disconnected after the float ball 21 presses against the contact switch 4, otherwise the contact switch 4 is closed.
[0047] Specifically, after the contact switch 2 is closed, the liquid outlet valve plate 18 flips upward, the float 21 is at the bottom of its stroke, the contact switch 4 is in a closed state, the liquid inlet pump is powered on and injects liquid into the outer shell 1. After the float 21 rises to the top of the float tank 37 along with the liquid level of the outer shell 1, it abuts against the contact switch 4 to cut off the power of the liquid inlet pump, and the liquid inlet pump stops injecting liquid. The contact switch 2 is connected in series with the contact switch 4, so that during the liquid discharge process, the float 21 is separated from the contact switch 4, the contact switch 2 is closed but the liquid inlet pump is in a powered off state.
[0048] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.
Claims
1. A high wear-resistant hammer production casting equipment, including a sand falling device, characterized in that: The sand falling device comprises: An outer shell (1); Inner shell (11); used to provide support for the sand mold; A cylinder fixed above the outer shell (1) and used to provide vibration for the sand mold; A liquid inlet pipe (36) is fixedly arranged in the outer shell (1) and connected to the liquid storage tank for injecting the reaction liquid.
2. The high wear-resistant hammer production casting equipment according to claim 1 is characterized in that: The outer shell (1) is fixedly connected to the inner shell (11); the inner shell (11) is connected to the outer shell (1) via a strip-shaped through hole (13) on a peripheral side wall; a base (14) is fixedly connected to the bottom of the inner shell (11), and an annular gap (15) is provided between the inner shell (11) and the base (14); and saw teeth (16) are provided in the annular gap (15).
3. The high wear-resistant hammer production casting equipment according to claim 1 is characterized in that: It also comprises a liquid outlet pipe (17); the liquid outlet pipe (17) is fixedly connected to the outer shell (1); and a liquid outlet valve plate (18) is rotatably arranged in the liquid outlet pipe (17).
4. The high wear-resistant hammer production casting equipment according to claim 3 is characterized in that: A connecting beam (19) is fixedly arranged in the liquid outlet pipe (17), and an electromagnet (1) is arranged on the connecting beam (19). The electromagnet (1) magnetically attracts the liquid outlet valve plate (18) to flip over.
5. A highly wear-resistant hammer production casting equipment according to any one of claim 4, characterized in that: The cylinder comprises: A cylinder seat (24); the cylinder seat (24) is arranged on the top of the outer shell (1) in a vertically sliding manner; the cylinder seat (24) adjusts the height of the cylinder by vertically sliding; A piston rod (25); one end of the piston rod (25) is slidably disposed in the cylinder seat (24); An air pump transmits gas to the cylinder seat (24) through a solenoid valve.
6. The high wear-resistant hammer production casting equipment according to claim 5 is characterized in that: The outer shell (1) is provided with a motor, and the motor output shaft is fixedly connected with a lead screw (26); the cylinder seat (24) moves by threaded transmission cooperation with the lead screw (26).
7. The high wear-resistant hammer production casting equipment according to claim 6 is characterized in that: The end of the piston rod (25) is provided with a trigger chamber (29); an abutment rod (28) and a contact piece (31) are movably arranged in the trigger chamber (29); and the abutment rod (28) can contact the contact piece (31) during movement.
8. The high wear-resistant hammer production casting equipment according to claim 7 is characterized in that: A connecting groove (33) is provided in the trigger chamber (29); a connecting rod (32) is fixedly connected to the contact piece (31); the connecting rod (32) is slidably arranged in the connecting groove (33); a contact switch three is arranged in the connecting groove (33); and the contact switch three is connected to the motor.
9. The high wear-resistant hammer production casting equipment according to claim 7, characterized in that: The trigger chamber (29) is provided with an electromagnet 2 for magnetically adsorbing the contact piece (31); the electromagnet 2 is connected to a contact switch 1, and the contact switch 1 is arranged on the piston rod (25).
10. The high wear-resistant hammer production casting equipment according to claim 8, characterized in that: A second contact switch is also provided in the connection groove (33), and the second contact switch is connected to the first electromagnet and the air pump.