CN215786579U - Automatic sand blowing device - Google Patents

Abstract

The utility model provides an automatic sand blowing device, which belongs to the technical field of mechanical equipment and comprises a fixed frame, a moving piece, a driving device, a telescopic rod and an air knife, wherein the driving device is detachably arranged on the moving piece, and drives the moving piece to reciprocate on the fixed frame; the telescopic link includes dead lever and movable rod, the dead lever with the movable rod can relative motion, the dead lever is installed vertically on the moving member, the movable rod with air knife fixed connection. The air knife can be provided with a plurality of air nozzles and can horizontally reciprocate, the height of the air knife can be adjusted, the air quantity of the air nozzles can be controlled, and floating sand on the surface of the sand mold or in the cavity can be effectively cleaned.

Description

Automatic sand blowing device

Technical Field

The utility model belongs to the field of mechanical equipment, and particularly relates to an automatic sand blowing device.

Background

In the process flow of the casting industry, floating sand on the surface and in an inner cavity of a sand core needs to be manually cleaned after the sand core is formed and before dip coating or flow coating, particularly, in the most advanced 3D printing sand core technology at present, the sand blowing workload on the surface and in the sand core is particularly large, but the existing sand blowing process is still manual sand blowing. The advantage of manual blowing lies in can thoroughly clean up complicated psammitolite inner chamber long-pending sand floating sand, has very big help to psammitolite dip-coating flow-coating quality, but the biggest shortcoming of manual blowing sand is that the labour work load is big, and blowing sand is efficient, and dust content is high in the blowing room air moreover, and is harmful to the health, and this has greatly influenced the 3D who takes rapid prototyping as the characteristic and has printed the casting industry development. Therefore, a device capable of automatically and rapidly cleaning floating sand of the sand core is urgently needed in the rapid prototyping and casting industry.

Disclosure of Invention

The utility model overcomes the defects of the prior art and provides the automatic sand blowing device which is used for replacing manual sand blowing and releasing labor force.

In order to achieve the purpose, the technical scheme adopted by the utility model is as follows: an automatic sand blowing device comprises a fixed frame, a moving piece, a driving device, a telescopic rod and an air knife, wherein the driving device is detachably arranged on the moving piece, and drives the moving piece to reciprocate on the fixed frame; the telescopic link includes dead lever and movable rod, the dead lever with the movable rod can relative motion, the dead lever is installed vertically on the moving member, the movable rod with air knife fixed connection.

Furthermore, limit switches are further arranged at two ends of the stroke of the moving part.

In an embodiment of the utility model, two parallel optical axes are horizontally arranged above the fixed frame, an organ protection sleeve is sleeved on the two optical axes, the moving member is a box-type bearing which is matched and slidably connected with the two optical axes, and the fixed rod is vertically arranged at the top of the box-type bearing.

Furthermore, a rack parallel to the optical axis is fixedly laid on the fixed frame, and the tooth surface of the rack is opposite to the air knife; the driving device is a motor, and the motor is fixed on one side of the box-type bearing and is in fit connection with the rack through a gear.

In another embodiment of the utility model, the fixed frame is a portal frame, a mounting plate is fixed below a cross beam of the portal frame, a sliding groove with a downward opening is formed in the bottom surface of the mounting plate, the moving member is a moving plate provided with a sliding rail, the sliding rail and the sliding groove are matched and slidably connected, and the fixed rod is vertically installed at the bottom of the moving plate.

Furthermore, a rack parallel to the sliding groove is laid on the bottom surface of the mounting plate, and the tooth surface of the rack faces downwards; the driving device is a motor, and the motor is fixed on the movable plate and is in fit connection with the rack through a gear.

Furthermore, the air knife comprises at least one section bar, a plurality of positioning holes are formed in the section bar, quick-connection-pins are installed in the positioning holes to form a horizontal air nozzle, and the horizontal air nozzle can blow air horizontally.

Furthermore, the air knife is also provided with at least one vertical air nozzle capable of vertically blowing air, and an air blowing opening of the vertical air nozzle is aligned with the rack.

Further, the wind power generation device further comprises a control device, and the control device controls the driving device and the wind knife.

According to the automatic sand blowing device, the air knife can be provided with the air nozzles and horizontally reciprocate, the height of the air knife can be adjusted, the air quantity of the air nozzles can be controlled, and floating sand on the surface of a sand mold or in a cavity can be effectively cleaned. And limit switches are further arranged at two ends of the stroke of the moving part, so that the sand blowing device can be prevented from exceeding the limit. The two embodiments are provided, a proper sand blowing mode can be selected according to actual conditions for sand cleaning, a motor and rack matched movement mode is adopted, and the service life of the device in a dust environment is prolonged to the maximum extent. This sand blowing device still is equipped with vertical tuyere, clears up the superficial sand in the rack at this device operation in-process, has increased the stability of this device operation and has prolonged the life of rack.

Drawings

FIG. 1 is a front view of one embodiment of the present invention;

FIG. 2 is a side view of one embodiment of the present invention;

FIG. 3 is an enlarged view of area A of FIG. 2 in accordance with the present invention;

FIG. 4 is a perspective view of another embodiment of the present invention;

fig. 5 is a schematic view of the connection of a movable plate and a mounting plate according to another embodiment of the present invention.

Wherein, 1-a fixed frame; 11-a portal frame; 12-installation of a plate; 121-a chute; 2-a moving member; 21-a plate moving plate; 3-a drive device; 31-a drag chain; 4-air knife; 41-horizontal tuyere; 42-air pipe; 5, a telescopic rod; 6-optical axis; 7-rack.

Detailed Description

To facilitate an understanding of the utility model, the utility model will now be described more fully with reference to the accompanying drawings.

In the present invention, unless otherwise specifically defined and limited, terms are to be construed broadly, and specific meanings of the terms in the present invention may be understood by those skilled in the art according to specific situations.

The utility model provides an automatic sand blowing device which comprises a fixed frame, a moving piece, a driving device, a telescopic rod and an air knife, wherein the driving device is detachably arranged on the moving piece, and drives the moving piece to reciprocate on the fixed frame; the telescopic link includes dead lever and movable rod, the dead lever with the movable rod can relative motion, the dead lever is installed vertically on the moving member, the movable rod with air knife fixed connection. And limit switches are further arranged at two ends of the travel of the moving element, and servo zero calibration sensors are further arranged between the limit switches. The device also comprises a control device, and the control device is used for controlling the driving device and the air knife.

In one embodiment of the present invention, as shown in fig. 1 to 3, the automatic sand-blowing device includes a fixed frame 1, a moving member 2, a driving device 3, an air knife 4, and a telescopic rod 5. The fixing frame 1 is an equipment base, is a supporting structure of the whole sand blowing movement device, can be formed by welding high-strength steel, and is welded and connected with a sand blowing room steel structure at the bottom. The moving part 2 is a box-type bearing, and two parallel optical axes 6 are horizontally arranged above the fixed frame 1. The box-type bearing is in sliding connection with the two optical axes in a matching way. All be equipped with the organ protective sheath on two optical axes 6 for protect optical axis 6 and box bearing, prevent that the sand and dust from getting into to cause box bearing wearing and tearing and cause the operation card pause in the box bearing. The driving device 3 is a motor, is fixed on one side of the box-type bearing through a bolt, is preferably a servo motor, and adopts an absolute value coding mode to ensure that the air knife 4 can be accurately positioned. The optical axis is preferably a linear optical axis and is a guide mechanism for the movement of the motor. The limit switches are positioned at two ends of the optical axis 6 to prevent the box type bearing from moving out of limit. A servo zero calibration sensor is arranged at one limit outlet close to the servo absolute value encoder, and the servo absolute value encoder has accumulated errors, so that the system is provided with an automatic zero calibration point, and accurate servo positioning is guaranteed. One side of the fixed mount 1 is provided with a drag chain 31 for laying a circuit for the motor.

A rack 7 parallel to the optical axis is also fixedly laid on the fixed frame 1, and the tooth surface of the rack 7 is back to the air knife 4; the motor is connected with the rack 7 through a gear in a matching way. The telescopic rod 5 comprises a fixed rod and a movable rod, the fixed rod and the movable rod can move relatively, the fixed rod is vertically installed above the box-type bearing through a bolt, and the movable rod is fixedly connected with the air knife 4. The section bar of the air knife 4 is preferably an aluminum section bar, the arrangement mode is not limited, and the section bar can be vertically arranged, horizontally arranged or obliquely arranged. The horizontal air nozzle 41 adopts an M16 metal quick connector. The air pipe 42 is connected into the quick connector to provide compressed air for the air nozzle 41, the on-off of the compressed air is realized by a PLC control electromagnetic valve, and the electromagnetic valve is positioned behind a compressed air main valve. At least one vertical air nozzle (not shown in the figure) capable of vertically blowing air is further arranged on the air knife 4, and an air blowing opening of the vertical air nozzle is aligned with the rack 7. The automatic sand blowing device is driven by a motor in combination with a gear rack and is matched with the electromagnetic valve to control the on-off of compressed air, so that the sand blowing operation surface can be accurately controlled, the sand blowing efficiency is higher, and more energy is saved.

In another embodiment of the present invention, as shown in fig. 4-5, the fixed frame is a portal frame 11, a mounting plate 12 is fixed below a cross beam of the portal frame 11, a sliding slot 121 with a downward opening is formed in the bottom surface of the mounting plate 12, the moving member is a moving plate 21 with a sliding rail, the sliding rail and the sliding slot 121 are in sliding connection in a matching manner, and the fixed rod of the telescopic rod 5 is vertically installed at the bottom of the moving plate. The portal frame 11 is a supporting mechanism of the whole sand blowing device and is formed by welding square steel, and the bottom of the portal frame is connected with a sand blowing room through bolts. A wire groove is laid on the portal frame 11, and a servo motor movement, a sensor control circuit and a compressed air pipeline are arranged in the wire groove. The rack 7 parallel to the chute 121 is laid on the bottom surface of the mounting plate 12, and the tooth surface of the rack 7 faces downwards, so that dust and sand particles in the sand blowing process are not easy to adhere to the rack 7 to influence the transmission performance. The driving device 3 is a motor, and the motor is fixed on the movable plate 21 and is connected with the rack 7 through a gear in a matching way. The air knife 4 is also provided with at least one vertical air nozzle (not shown in the figure) capable of vertically blowing air, and the air blowing port of the vertical air nozzle is aligned with the rack.

Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes, modifications, equivalents, and improvements may be made without departing from the spirit and scope of the utility model.

Claims (9)

1. An automatic sand blowing device is characterized by comprising a fixed frame, a moving piece, a driving device, a telescopic rod and an air knife, wherein the driving device is detachably arranged on the moving piece, and drives the moving piece to reciprocate on the fixed frame; the telescopic link includes dead lever and movable rod, the dead lever with the movable rod can relative motion, the dead lever is installed vertically on the moving member, the movable rod with air knife fixed connection.

2. An automatic sand-blowing device according to claim 1, wherein limit switches are further provided at both ends of the stroke of the moving member.

3. The automatic sand blowing device according to claim 1, wherein two parallel optical axes are horizontally arranged above the fixed frame, an organ protection sleeve is sleeved on the two optical axes, the moving member is a box-type bearing which is in sliding connection with the two optical axes in a matching manner, and the fixed rod is vertically arranged at the top of the box-type bearing.

4. The automatic sand blowing device according to claim 3, wherein a rack parallel to the optical axis is further fixedly laid on the fixing frame, and the tooth surface of the rack faces away from the air knife; the driving device is a motor, and the motor is fixed on one side of the box-type bearing and is in fit connection with the rack through a gear.

5. The automatic sand blowing device according to claim 1, wherein the fixed frame is a portal frame, a mounting plate is fixed below a cross beam of the portal frame, a chute with a downward opening is formed in the bottom surface of the mounting plate, the moving member is a movable plate provided with a slide rail, the slide rail and the chute are in matched sliding connection, and the fixed rod is vertically installed at the bottom of the movable plate.

6. The automatic sand blowing device according to claim 5, wherein a rack parallel to the sliding groove is laid on the bottom surface of the mounting plate, and the tooth surface of the rack faces downwards; the driving device is a motor, and the motor is fixed on the movable plate and is in fit connection with the rack through a gear.

7. The automatic sand blowing device of claim 1, wherein the air knife comprises at least one section bar, a plurality of positioning holes are formed in the section bar, quick-plug connectors are mounted in the positioning holes to form horizontal air nozzles, and the horizontal air nozzles can blow air horizontally.

8. The automatic sand blowing device according to claim 4, wherein the air knife is further provided with at least one vertical air nozzle capable of vertically blowing air, and an air blowing port of the vertical air nozzle is aligned with the rack.

9. The automatic sand blowing device according to claim 1, further comprising a control device that controls the driving device and the air knife.

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