Sprue blowing machine
By designing a multi-degree-of-freedom blow-gate machine, and utilizing an industrial robotic arm and an electric push rod-driven synchronous rotating circular plate structure, the problem of traditional blowing methods failing to remove floating sand from the gate has been solved. This achieves thorough removal of floating sand without dead angles, improving casting quality and efficiency.
Patent Information
- Application Number
- CN202520614625.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-02
- Publication Date
- 2026-03-03
- Estimated Expiration
- 2035-04-02
AI Technical Summary
In the existing technology, vertically lifting air pipes cannot effectively remove loose sand from the gate and pouring channel, resulting in casting defects. In particular, when facing slopes with different inclination angles, it is impossible to achieve thorough cleaning of loose sand.
A blower for the gate was designed, which adopts a synchronous rotating circular plate structure supported by an industrial robotic arm. It combines an electric push rod and a rotary motor to drive the rigid spray pipe for multi-degree-of-freedom adjustment, realizing 360° rotation and tilting swing of the rigid spray pipe. Equipped with multi-angle blow holes, and with a high-pressure air source and electromagnetic proportional valve, it can accurately adapt to the sloping structure under the gate for thorough cleaning without dead angles.
It enables comprehensive removal of loose sand from the gate and slope, improving removal efficiency and quality, and ensuring the stability of the casting process and the quality of the finished products.
Smart Images
Figure CN223960507U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of molding sand gate cleaning device, specifically a gate blowing machine. Background Technology
[0002] The gating system is the entrance and channel for molten metal to enter the mold during pouring in metal casting operations. It is a crucial part of the molding sand mold design, affecting the molding quality and production efficiency of the cast products. A gating runner is located at the bottom of the gating system, and the bottom of the gating runner typically connects to several branch runners. If loose sand is present in the gating system and gating runner, it can cause subsequent casting defects. Current solutions involve using compressed air through an air blower to purge the gating system and gating runner, removing the attached loose sand. However, the air blower typically moves vertically up and down, while the lower part of the gating system often has slopes at different angles. A vertically moving air blower cannot effectively purge loose sand from these slopes without leaving any blind spots, thus failing to guarantee the quality of the subsequently cast products. Utility Model Content
[0003] The purpose of this invention is to provide a blower for the gate, which can adaptively swing and adjust the rigid spray pipe according to the slope with different inclination angles at the bottom of the gate, so that high-pressure gas can blow away the floating sand from the gate and the slope without dead angles, thus solving the problems in the prior art.
[0004] The technical solution adopted by this utility model to solve its technical problem is: a blower, including a gantry frame, an industrial robotic arm installed on the crossbeam of the gantry frame, a bracket installed on the output shaft of the industrial robotic arm, a first circular plate and a second circular plate that can rotate synchronously on the bracket, the first circular plate and the second circular plate are arranged coaxially, the second circular plate is located below the first circular plate, a blower tube is hinged and installed in the second circular plate, the first circular plate has a long groove that cooperates with the blower tube, the upper end of the blower tube extends upward through the long groove and is connected to a spring hose, the spring hose is connected to a high-pressure air source, an electric push rod is also installed on the first circular plate, the piston rod of the electric push rod is connected to the blower tube, the extension and retraction of the piston rod of the electric push rod can drive the blower tube to swing to different angles of inclination in the long groove. The first circular plate is mounted on a bracket via bearings. A support platform is located at the lower part of the inner ring of the bearing. An annular groove mates with the support platform is located at the bottom of the first circular plate. The first and second circular plates are fixedly connected by a vertical rod. A hole is formed inside the second circular plate for the rigid spray pipe to pass through. Two sets of hinge shafts connecting to the rigid spray pipe are located within the hole. A gear ring is also provided on the outer circumference of the second circular plate. A rotary motor is mounted at the bottom of the bracket. A drive gear meshing with the gear ring is located on the output shaft of the rotary motor. Starting the rotary motor drives the second circular plate, the first circular plate, and the internal rigid spray pipe to rotate synchronously. The piston rod end of the electric push rod is equipped with a fork. Guide grooves are formed on both sides of the upper end of the rigid spray pipe as it exits the long slot. A guide post mates with the guide groove on the inner side of the fork. The extension and retraction of the piston rod of the electric push rod moves the guide post within the guide groove, maintaining the rigid spray pipe at different angles of inclination. The outer side of the hinge shaft is located within a hole in the second circular plate, and the inner side of the hinge shaft has a guide sleeve that mates with the rigid spray tube. A lifting motor is mounted on the fork, and a lifting gear is mounted on the output shaft of the lifting motor. The rigid spray tube has a rack that meshes with the lifting gear. When the rigid spray tube is in a vertical position, the lifting motor can drive the rigid spray tube to move vertically up and down along the guide sleeve. When the piston rod of the electric push rod extends or retracts, it can drive the rigid spray tube to swing around the hinge shaft. After swinging, the rack on the rigid spray tube always meshes with the lifting gear. The outer circumference of the bottom of the rigid spray tube has a first, second, and third circumferentially arranged blowhole, wherein the first blowhole is inclined upward, the second blowhole is horizontal, and the third blowhole is inclined downward. An electromagnetic proportional valve is installed on the spring hose. The control end of the electromagnetic proportional valve is electrically connected to the control module of the industrial robotic arm. The electromagnetic proportional valve can adjust the pressure and flow rate of the sprayed gas according to a preset program.
[0005] The positive effects of this utility model are as follows: The blow gate machine of this utility model has a first circular plate and a second circular plate that can rotate synchronously installed on the support of the output shaft of the industrial robotic arm. A swingable jet pipe is hinged to the second circular plate. The first circular plate has a long groove that matches the jet pipe. The jet pipe is driven by an electric push rod to swing in the long groove. With the 360° synchronous rotation design of the first and second circular plates, it can accurately adapt to the slope structure with different inclination angles at the bottom of the gate, eliminate the cleaning blind spots caused by traditional straight up and down blowing, improve the removal efficiency and quality of floating sand in the gate, and can be applied to various complex gate structures to achieve blind-angle blowing in the gate and effectively ensure the casting quality in the subsequent production process. Attached Figure Description
[0006] Figure 1 This is a schematic diagram of the structure of this utility model;
[0007] Figure 2 This is a magnified view of the support frame and its superstructure.
[0008] Figure 3 yes Figure 2 A schematic diagram of the jetting rigid pipe swinging to an inclined state in the structure;
[0009] Figure 4 yes Figure 2 A half-section diagram of the middle structure;
[0010] Figure 5 yes Figure 2 Sectional view along line AA;
[0011] Figure 6 yes Figure 2 Sectional view along the BB direction;
[0012] Figure 7 This is a schematic diagram of the structure for mounting a lifting motor on the forklift.
[0013] Figure 8 yes Figure 7 C-axis sectional view;
[0014] Figure 9 yes Figure 7 A magnified view of part of I;
[0015] Figure 10 yes Figure 9 A schematic diagram showing the engagement of the lifting gear and rack when the central jet rigid pipe is tilted.
[0016] Figure 11 This is a schematic diagram of a blowhole at the bottom of a rigid jet tube;
[0017] Figure 12 This is a diagram showing the usage state of this utility model. Detailed Implementation
[0018] The present invention describes a blower for pouring gates, such as... Figure 1 As shown, the system includes a gantry frame 1, on which an industrial robotic arm 2 is mounted. The industrial robotic arm 2 can be an existing six-axis robotic arm, with its output axis having six degrees of freedom, enabling flexible movement in multiple directions and angles. A bracket 3 is mounted on the output axis of the industrial robotic arm 2. The bracket 3 is a rigid structure used to support subsequent components.
[0019] To achieve thorough purging of the slopes below the gate at different inclination angles, such as... Figure 2 As shown, a first circular plate 4 and a second circular plate 5 that can rotate synchronously are provided on the bracket 3. The first circular plate 4 and the second circular plate 5 are arranged coaxially, and the second circular plate 5 is located below the first circular plate 4.
[0020] A rigid jet pipe 6 is hinged and installed inside the second circular plate 5. The rigid jet pipe 6 can blow out a high-pressure airflow to remove loose sand adhering to the gate. The first circular plate 4 has an elongated groove 7 that mates with the rigid jet pipe 6. The upper end of the rigid jet pipe 6 extends upward through the elongated groove 7 and is connected to a spring hose 8. The spring hose 8 is connected to a high-pressure air source, which can be an air compressor, providing a stable supply of high-pressure gas. The spring hose 8 allows the rigid jet pipe 6 to rotate and swing, while ensuring the normal delivery of high-pressure gas inside.
[0021] To achieve the swing adjustment of the rigid spray pipe 6 on the circular plate, an electric push rod 9 is also installed on the first circular plate 4. The piston rod of the electric push rod 9 is connected to the rigid spray pipe 6. The extension and retraction of the piston rod of the electric push rod 9 can drive the rigid spray pipe 6 to swing to different angles of inclination within the elongated groove 7. This allows the rigid spray pipe 6 to be arranged perpendicular to the slope below the gate, and during the rotation of the first circular plate 4 and the second circular plate 5, the rigid spray pipe 6 can perform all-round circumferential blowing on the slope, achieving thorough cleaning of the slope without any dead angles.
[0022] Furthermore, in order to achieve the rotational mounting of the first circular plate 4 and the second circular plate 5 on the bracket 3, such as... Figure 4-6 As shown, the first circular plate 4 can be mounted on the bracket 3 via the bearing 10. The lower part of the inner ring of the bearing 10 is provided with a support platform 11, and the bottom of the first circular plate 4 is provided with an annular groove 12 that cooperates with the support platform 11. The above structure provides a mounting base for the first circular plate 4 while also allowing the first circular plate 4 to rotate freely around its own axis.
[0023] To achieve synchronous rotation of the first circular plate 4 and the second circular plate 5, the first circular plate 4 and the second circular plate 5 are fixedly connected by a vertical rod 13. To ensure that the rigid spray pipe 6 can swing around the hinge point on the second circular plate 5, a hole is opened inside the second circular plate 5 for the rigid spray pipe 6 to pass through. Two sets of hinge shafts 14 connected to the rigid spray pipe 6 are provided in the hole. When the piston rod of the electric push rod 9 extends, the rigid spray pipe 6 rotates around the hinge shaft 14, and at the same time, the upper part of the rigid spray pipe 6 moves in the elongated groove 7, so that the rigid spray pipe 6 is in different tilt angles. When the piston rod of the electric push rod 9 retracts, the rigid spray pipe 6 can rotate back to the initial vertical state.
[0024] To drive the rotation of the two circular plates, a gear ring 15 can be provided on the outer periphery of the second circular plate 5. A rotary motor 16 is installed at the bottom of the bracket 3, and a drive gear 17 that meshes with the gear ring 15 is provided on the output shaft of the rotary motor 16. When the rotary motor 16 is started, the drive gear 17 drives the gear ring 15 to rotate, thereby driving the second circular plate 5, the first circular plate 4 and the internal jet pipe 6 to rotate synchronously, achieving 360° rotation adjustment.
[0025] Furthermore, in order to achieve the connection between the piston rod of the electric push rod 9 and the upper part of the jetting hard pipe 6, the horizontal extension and retraction of the piston rod of the electric push rod 9 can realize the swing adjustment of the jetting hard pipe 6 at different tilt angles. The piston rod end of the electric push rod 9 can be provided with a fork 18. Guide grooves 19 are opened on both sides of the upper end of the jetting hard pipe 6 through the long strip groove 7. The inner side of the fork 18 is provided with a guide post 20 that cooperates with the guide groove 19. The extension and retraction of the piston rod of the electric push rod 9 can drive the guide post 20 to move in the guide groove 19 and maintain the tilt state of the jetting hard pipe 6 at different angles.
[0026] The aforementioned matching guide groove 19 and guide post 20 not only realize the hinged connection between the piston rod and the jetting hard pipe 6, but also allow the connection position to be adaptively changed when the jetting hard pipe 6 is swinging, so that the horizontally extending piston rod can drive the jetting hard pipe 6 to tilt and swing at different angles.
[0027] Furthermore, in order to achieve purging of the lower part of the gating channel, the rigid spray pipe 6 can be moved down a certain distance relative to the second circular plate 5 to enter the gating channel, such as... Figure 7-10 As shown, the outer side of the hinge shaft 14 is disposed in the hole of the second circular plate 5, and the inner side of the hinge shaft 14 is provided with a guide sleeve 25 that cooperates with the jet tube 6. The guide sleeve 25 can drive the internal jet tube 6 to swing, and at the same time allows the jet tube 6 to extend downward along the guide sleeve 25 for a certain distance.
[0028] A lifting motor 26 is mounted on the fork 18, and a lifting gear 27 is mounted on the output shaft of the lifting motor 26. The rigid spray pipe 6 is provided with a rack 28 that meshes with the lifting gear 27. When the rigid spray pipe 6 is in a vertical position, the lifting motor 26 can drive the rigid spray pipe 6 to move vertically up and down along the guide sleeve 25. When the rigid spray pipe 6 passes downward through the guide sleeve 25, it can enter the pouring channel for purging.
[0029] When the piston rod of the electric push rod 9 extends or retracts, it drives the jetting hard pipe 6 to swing around the hinge shaft 14. After swinging, the rack 28 on the jetting hard pipe 6 is always engaged with the lifting gear 27, thereby limiting the vertical height of the jetting hard pipe 6 and preventing it from falling vertically during tilt angle adjustment. The distance between the fork 18 and the jetting hard pipe 6 is small, so even if the jetting hard pipe 6 tilts, its rack 28 will still engage with the lifting gear 27, preventing the jetting hard pipe 6 from extending too far out of the guide sleeve 25 and interfering with the bottom gate.
[0030] When the tilt angle of the rigid spray pipe 6 is adjusted, the lifting motor 26 is in a stopped state, achieving relative locking of the rigid spray pipe 6 in the height direction. The extension and retraction of the piston rod of the electric push rod 9 can achieve the tilt angle adjustment of the rigid spray pipe 6. When the rigid spray pipe 6 returns to the vertical position, the piston rod of the electric push rod 9 is locked and no longer extends or retracts. The lifting motor 26 is then started, which can drive the rigid spray pipe 6 to move vertically up and down.
[0031] To further adapt to gate slope structures with different inclination angles and achieve all-round, dead-angle-free purging, such as Figure 11 As shown, the outer periphery of the bottom of the jetting hard pipe 6 can be provided with a first blowhole 21, a second blowhole 22 and a third blowhole 23 arranged in a circle. The first blowhole 21 is opened at an angle upward, the second blowhole 22 is opened horizontally, and the third blowhole 23 is opened at an angle downward. The blowholes opened in all directions can provide a wider coverage of the gate and the slope below the gate, ensuring that the floating sand in the gate is blown away cleanly, thereby ensuring the quality of the subsequent cast products.
[0032] Furthermore, an electromagnetic proportional valve 24 can be installed on the spring hose 8, and the control end of the electromagnetic proportional valve 24 is electrically connected to the control module of the industrial robotic arm 2. The control module of the industrial robotic arm 2 can send control signals to the electromagnetic proportional valve 24 according to a preset program. The electromagnetic proportional valve 24 adjusts the pressure and flow rate of the blowing gas according to the received signal to adapt to different purging requirements.
[0033] In actual use, such as Figure 12As shown, the industrial robotic arm 2 moves the rigid spray pipe 6 to a suitable position above the gate according to a preset program. Then, the piston rod of the electric push rod 9 extends, causing the rigid spray pipe 6 to swing within the elongated groove 7 to an angle matching the slope below the gate. The industrial robotic arm 2 then moves the rigid spray pipe 6 downward into the gate. The rotary motor 16 starts, causing the second circular plate 5, the first circular plate 4, and the rigid spray pipe 6 to rotate. Simultaneously, the control module of the industrial robotic arm 2 controls the electromagnetic proportional valve 24 according to a preset program to adjust the pressure and flow rate of the sprayed gas. The high-pressure gas source sprays high-pressure gas through the spring hose 8, the rigid spray pipe 6, and the first blowhole 21, the second blowhole 22, and the third blowhole 23, performing thorough cleaning of the gate and slope. After cleaning the gate on a set of molding sand, the industrial robotic arm 2 moves the rigid spray pipe 6 upward, and the next set of molding sand moves to the cleaning position to perform the cleaning operation on the next gate.
[0034] The blow gate machine of this utility model achieves multi-degree-of-freedom movement of the blow-blowing rigid pipe 6 through the coordinated action of the industrial robotic arm 2, the rotary motor 16 and the electric push rod 9. It can accurately adapt to the sloping structure at the bottom of different gates, effectively improve the removal efficiency and quality of floating sand in the gate, and ensure the quality of subsequent casting products.
[0035] The technical solution of this utility model is not limited to the scope of the embodiments described herein. All technical contents not described in detail herein are publicly known technologies.
Claims
1. A blow nozzle machine characterized by: The utility model provides an industrial robot arm, including gantry (1), industrial robot arm (2) is installed on the crossbeam of gantry (1), the output shaft of industrial robot arm (2) is installed with support (3), and the synchronous rotation first circular plate (4) and second circular plate (5) are arranged on support (3), the coaxial center of first circular plate (4) and second circular plate (5) is arranged, and second circular plate (5) is located the downside of first circular plate (4), and the blowing hard pipe (6) is hingedly installed in second circular plate (5), the long slot (7) that cooperates with blowing hard pipe (6) is set up on first circular plate (4), and the upper end of blowing hard pipe (6) is out of long slot (7) and is connected with spring hose (8), the spring hose (8) is connected with high pressure gas source, and electric push rod (9) is also installed on first circular plate (4), and the piston rod of electric push rod (9) is connected with blowing hard pipe (6), and the piston rod of electric push rod (9) telescopic can drive blowing hard pipe (6) swing in long slot (7) to different angle's inclined state.
2. A machine according to claim 1, characterised in that: The first circular plate (4) is installed on the support (3) through the bearing (10), the lower part of the inner ring of bearing (10) is provided with the supporting table (11), the bottom of the first circular plate (4) is provided with the annular groove (12) matched with the supporting table (11), the first circular plate (4) and the second circular plate (5) are fixedly connected through the vertical rod (13), the hole is set up in the inside of the second circular plate (5) and is connected with the two groups of hinged shafts (14) of blowing hard pipe (6), the outer periphery of the second circular plate (5) is also provided with the gear ring (15), the bottom of the support (3) is installed with the rotating motor (16), the output shaft of rotating motor (16) is provided with the driving gear (17) engaged with the gear ring (15), and the rotating motor (16) can drive the synchronous rotation of the second circular plate (5), the first circular plate (4) and the blowing hard pipe (6) in the inside.
3. A machine according to claim 2, wherein: The piston rod end of the electric push rod (9) is provided with the fork (18), the both sides of the upper end of blowing hard pipe (6) out of long slot (7) are provided with the guide slot (19), the inner side of fork (18) is provided with the guide column (20) matched with guide slot (19), and the piston rod of electric push rod (9) telescopic can drive guide column (20) move in guide slot (19), and maintain the different angle's inclined state of blowing hard pipe (6).
4. A machine according to claim 3, characterised in that: The outer side of the hinge shaft (14) is arranged in the hole of the second circular plate (5), the inner side of the hinge shaft (14) is provided with a guide sleeve (25) matched with the blowing hard pipe (6), a lifting motor (26) is installed on the fork (18), a lifting gear (27) is installed on the output shaft of the lifting motor (26), the blowing hard pipe (6) is provided with a rack (28) engaged with the lifting gear (27), when the blowing hard pipe (6) is in the vertical state, the lifting motor (26) is started to drive the blowing hard pipe (6) to vertically lift along the guide sleeve (25), when the piston rod of the electric push rod (9) is retracted, the blowing hard pipe (6) can swing around the hinge shaft (14), the rack (28) on the swinging blowing hard pipe (6) is always engaged with the lifting gear (27).
5. A machine according to claim 1, wherein: The outer periphery of the bottom of the blowing hard pipe (6) is provided with the first blow hole (21), the second blow hole (22) and the third blow hole (23) arranged in the circumference, wherein the first blow hole (21) is inclined upward, the second blow hole (22) is horizontally arranged, and the third blow hole (23) is inclined downward.
6. A machine according to claim 1, wherein: The spring hose (8) is provided with an electromagnetic proportional valve (24), the control end of the electromagnetic proportional valve (24) is electrically connected with the control module of the industrial robot arm (2), and the electromagnetic proportional valve (24) can adjust the pressure and flow of the blowing gas according to the preset program.