Automatic feeding mechanism for sand washing test

Abstract

An automatic feeding mechanism for a sand washing test comprises a feeding frame, a feeding plate and a driving mechanism, the feeding frame is vertically arranged, a rail allowing the feeding plate to be placed in and slide up and down is installed on the outer side of the feeding frame, the rail clings to the feeding frame and is vertically arranged, the upper end of the rail is in a semicircular shape bent outwards, and the driving mechanism comprises a motor and a feeding belt. The feeding belt is installed on the feeding frame and is parallel to the vertical section of the track, the feeding belt is in transmission connection with the feeding plate, a sensor for limiting the lifting stroke of the feeding plate is arranged on the feeding frame, a sand hopper is fixed to the feeding plate, when the feeding plate is located at the lower limit position, the sand hopper is in a material receiving state, and when the feeding plate is located at the upper limit position, the sand hopper is in a material receiving state. And the sand hopper is in a feeding state. The device is simple and reasonable in structure and convenient to operate, effectively solves the problems that manual operation is high in working intensity, high in error, low in working efficiency and the like, greatly reduces labor intensity, meanwhile, is accurate in testing and high in efficiency, can achieve automatic testing, and reduces testing cost.

Description

Technical Field

[0001] The utility model belongs to the technical field of sand blasting test of steel tape, and relates to an automatic feeding mechanism, in particular to an automatic feeding mechanism for sand blasting test. Background Technique

[0002] According to the steel tape industry standard QB / T2443-2011, it is required that the coating of the coated steel tape undergoes continuous sand blasting test with 20 # emery, and after the test, the scale lines, character marks, etc. on the scale surface are not eroded or fallen off. The existing sand blasting test method for the steel tape coating is as Figure 1 shown. The sand blasting test device includes a sand storage cylinder 11, a sand blasting pipe 12, a steel tape fixing bottom plate 14, a steel tape fixing block 15 and a sand collecting tray 16. Specifically, the steel tape 13 is fixed on the steel tape fixing bottom plate 14 inclined at 45°, 25 mm away from the nozzle of the sand blasting pipe 12, and undergoes sand blasting test with 20 # emery. Due to the lack of a special feeding mechanism, manual operation is adopted in actual tests. In the actual test process, the following defects are found:

[0003] 1. The feeding of emery needs to be completed by the test personnel. Moreover, when the coating of the steel tape is broken through, the test stops, and the test personnel need to weigh the fallen sand manually, resulting in high labor intensity, low work efficiency, and the need to be equipped with 2-3 testers to complete the test, which increases the test cost. In addition, human factors will also cause measurement errors and affect the test accuracy;

[0004] 2. Most of the emery exists in the form of granular, but it cannot be excluded that there will be powdery particles mixed in it. If the powder is inhaled into the body by the test personnel operating at close range during the test, it will be harmful to the health of the test personnel;

[0005] 3. The emery in the test is not reused, resulting in an increase in the test cost.

[0006] Therefore, it is necessary to develop a special automatic feeding mechanism, which can effectively reduce the working intensity of the test personnel in feeding and improve the work efficiency. Summary of the Invention

[0007] The technical problem to be solved by the utility model is to provide an automatic feeding mechanism for sand blasting test with simple and reasonable structure and convenient operation in view of the above technical status, which can effectively reduce the labor intensity and improve the work efficiency.

[0008] The technical solution adopted by the present utility model to solve the above technical problems is as follows: An automatic feeding mechanism for sand washing test, characterized in that: the automatic feeding mechanism includes a feeding frame, a feeding plate and a driving mechanism for driving the feeding plate to move up and down. The feeding frame is vertically arranged on the base. An outer side of the feeding frame is provided with a track for the feeding plate to be inserted and slide up and down. The track is closely arranged vertically to the feeding frame and the upper end is in a semicircular shape bent outward. The driving mechanism includes a motor and a feeding belt. The feeding belt is installed on the feeding frame parallel to the vertical section of the track. The feeding belt is in transmission connection with the feeding plate. A sensor for limiting the lifting stroke of the feeding plate is arranged on the feeding frame. A sand hopper is fixed on the feeding plate. When the feeding plate is in the lower limit position, the sand hopper is in a state of receiving materials. When the feeding plate is in the upper limit position, the sand hopper is in a state of feeding materials.

[0009] As an improvement, the feeding plate is strip-shaped. The length of the feeding plate corresponds to the diameter of the semicircular track at the upper end of the track. Pulley wheels cooperating with the track are installed at the upper and lower ends of the feeding plate. The feeding plate is arranged on the track in a manner that it can move up and down through the pulley wheels. The sand hopper is fixed to the middle and lower position of the outer side of the feeding plate by screws.

[0010] Furthermore, the motor is a servo motor. The motor is installed on the base and located outside the feeding frame. Sprockets for driving the conveyor belt to rotate are respectively installed at the upper and lower ends of the feeding frame. An output wheel is provided at the output end of the motor and is in transmission connection with the sprocket at the lower end of the feeding frame. A pulley wheel is connected to a side of the conveyor belt close to the feeding plate. The pulley wheel is arranged inside the track and below the lower pulley wheel of the feeding plate. The pulley wheel and the lower pulley wheel are connected through a connecting plate.

[0011] Furthermore, the sensor includes an upper limit sensor and a lower limit sensor. When the feeding plate moves up to the upper limit position, the feeding plate is at the semicircular track and the inclination angle is greater than 90°.

[0012] Still further, the inclination angle of the feeding plate is 95° - 115°.

[0013] Finally, the automatic feeding mechanism further includes a control panel. The control panel sends instructions through a PLC to control the operation of the motor. A display screen, as well as "Start" and "Stop" buttons, are provided on the control panel.

[0014] Compared with the prior art, the advantages of the present utility model are as follows: a feeding rack, a track and a feeding plate are provided. The sand hopper is installed on the feeding plate, and the feeding plate can move up and down along the track through a driving mechanism, so that the traditional manual feeding can be improved to automatic feeding, greatly reducing the labor intensity; upper and lower limit sensors are provided to limit the lifting of the feeding plate. When the feeding plate is in the lower limit position, the sand hopper is in the state of receiving materials. When the feeding plate is in the upper limit position, the sand hopper is in the state of feeding materials. And when in the feeding state, the inclination angle of the feeding plate is greater than 90°, preventing dead angles from occurring during resetting; a control panel is provided to control the operation of the motor and realize automatic feeding. The structure of the present utility model is simple and reasonable, and the operation is convenient. It effectively solves the problems of large labor intensity, high human error and low work efficiency in manual operation, greatly reduces the labor intensity, and at the same time has accurate testing and high efficiency, can realize automatic testing, and reduces the testing cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a schematic structural diagram of a traditional sand flushing test device;

[0016] Figure 2 is a schematic structural diagram of the feeding mechanism of the embodiment of the present utility model;

[0017] Figure 3 is a schematic structural diagram of the sand flushing test device of the embodiment of the present utility model in the state of receiving materials;

[0018] Figure 4 is a schematic structural diagram of the sand flushing test device of the embodiment of the present utility model in the state of feeding materials. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0019] The present utility model will be further described in detail below with reference to the embodiments of the drawings.

[0020] As shown in Figure 2 、 3 、4, an automatic feeding mechanism for sand flushing test includes a feeding rack 1, a feeding plate 4 and a driving mechanism for driving the feeding plate 4 to move up and down. The feeding rack 1 is vertically arranged on a base 7. A track 2 for the feeding plate 4 to be inserted and slide up and down is installed on the outer side of the feeding rack 1. The track 2 is vertically arranged close to the feeding rack 1 and the upper end is a semi-circular shape 21 bent outwards. The driving mechanism includes a motor 6 and a feeding belt 3. The feeding belt 3 is installed on the feeding rack 1 and is parallel to the vertical section of the track 2. The feeding belt 3 is in transmission connection with the feeding plate 4. Sensors a and b for limiting the lifting stroke of the feeding plate 4 are arranged on the feeding rack 1. A sand hopper 5 is fixed on the feeding plate 4. When the feeding plate 4 is in the lower limit position, the sand hopper 5 is in the state of receiving materials. When the feeding plate 4 is in the upper limit position, the sand hopper 5 is in the state of feeding materials.

[0021] The specific structure is as follows: The feeding plate 4 is strip-shaped, and the length of the feeding plate 4 corresponds to the diameter of the semi-circular track 21 at the upper end of the track 2. Pulley 41 and 42 which cooperate with the track 2 are installed at the upper and lower ends of the feeding plate 4. The feeding plate 4 is movably arranged on the track 2 through the pulleys 41 and 42 and can move up and down. The sand hopper 5 is fixed on the middle and lower position of the outer side surface of the feeding plate 4 by screws. The motor 6 is a servo motor. The motor 6 is installed on the base 7 and is located outside the feeding rack 1. Sprockets 31 and 32 for driving the conveyor belt 3 to rotate are respectively installed at the upper and lower ends of the feeding rack 1. An output wheel is provided at the output end of the motor 6 and is in transmission connection with the sprocket 32 at the lower end of the feeding rack 1. A pulley 43 is connected to one side of the conveyor belt 3 close to the feeding plate 4. The pulley 43 is arranged inside the track 2 and is located below the lower pulley 42 of the feeding plate 4. The pulley and the lower pulley are connected through a connecting plate 44.

[0022] The sensors a and b include the upper limit sensor a and the lower limit sensor a. When the feeding plate 4 moves up to the upper limit position, the feeding plate 4 is at the semi-circular track 21 and the inclination angle α is greater than 90°. In this embodiment, it is 100°. This can prevent dead angles from occurring when the feeding plate 4 resets, thus preventing mechanical failures of the device. The automatic feeding mechanism further includes a control panel 8. The control panel 8 sends instructions through the PLC and controls the operation of the motor 6. A display screen and "start" and "stop" buttons are provided on the control panel 8.

[0023] In addition, the sand flushing mechanism 10 is also installed on the base 7, and balance foot pads 70 are provided at the bottom of the base.

[0024] The specific operation process is as follows:

[0025] Before the test, the tape is fixedly inclined on the support plate 102 of the sand flushing mechanism 10. The feeding plate 4 is in the lower limit position (i.e., the material receiving state A). Pour 2L20 # emery into the sand hopper 5. Press the "start" button on the control panel 8. The motor 6 starts to operate, driving the sprocket 32 to rotate. The conveyor belt 3 drives the feeding plate 4 to move upward. When the feeding plate 4 moves to the upper limit position (i.e., the feeding state B), the motor 6 stops operating. The sand hopper 5 pours the emery into the sand dropping hopper 101 (at this time, the lower opening of the sand dropping hopper 101 is closed). After pouring, the control panel 8 issues an instruction, and the motor 6 rotates in reverse, driving the conveyor belt 3 to rotate counterclockwise. The feeding plate 4 moves downward, sending the sand hopper 5 back to the initial material receiving state A. Then the sand flushing mechanism 10 starts to operate, the lower opening of the sand dropping hopper 101 opens, and the emery drops for sand flushing. After the sand flushing is completed, all the emery is recovered into the sand hopper 5, and a new round of feeding is carried out. This cycle repeats until the surface of the tape is damaged.

[0026] The utility model improves the manual feeding of transmission into automatic feeding, greatly reducing the labor intensity, effectively solving the problems of large labor intensity, high human error and low work efficiency in manual operation. At the same time, the test is accurate and efficient, the automatic test can be realized, and the test cost is reduced.

[0027] The above are only the preferred embodiments of the utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the utility model, several improvements and refinements can be made, and these improvements and refinements should also be regarded as the protection scope of the utility model.

Claims

1. An automated feeding mechanism for sand flushing test, characterized in that: The automatic feeding mechanism includes a feeding rack, a feeding plate, and a driving mechanism for driving the feeding plate to move up and down. The feeding rack is vertically arranged on the base. An outer side of the feeding rack is provided with a track for the feeding plate to be inserted and slide up and down. The track is vertically arranged close to the feeding rack and has a semi-circular shape bent outward at the upper end. The driving mechanism includes a motor and a feeding belt. The feeding belt is installed on the feeding rack and is parallel to the vertical section of the track. The feeding belt is in transmission connection with the feeding plate. A sensor for limiting the lifting stroke of the feeding plate is provided on the feeding rack. A sand hopper is fixed on the feeding plate. When the feeding plate is in the lower limit position, the sand hopper is in a state of receiving materials. When the feeding plate is in the upper limit position, the sand hopper is in a state of feeding materials.

2. The automated feeding mechanism according to claim 1, wherein: The feeding plate is strip-shaped. The length of the feeding plate corresponds to the diameter of the semi-circular track at the upper end of the track. Pulley wheels cooperating with the track are installed at the upper and lower ends of the feeding plate. The feeding plate is arranged on the track to be movable up and down through the pulley wheels. The sand hopper is fixed at a middle and lower position on the outer side of the feeding plate by screws.

3. The automated feeding mechanism according to claim 2, characterized in that: The motor is a servo motor. The motor is installed on the base and is located outside the feeding rack. Sprockets for driving the conveyor belt to rotate are respectively installed at the upper and lower ends of the feeding rack. An output wheel is provided at the output end of the motor and is in transmission connection with the sprocket at the lower end of the feeding rack. A pulley wheel is connected to a side of the conveyor belt close to the feeding plate. The pulley wheel is arranged inside the track and is located below the lower pulley wheel of the feeding plate. The pulley wheel and the lower pulley wheel are connected through a connecting plate.

4. The automatic feeding mechanism according to claim 1, wherein: The sensor includes an upper limit sensor and a lower limit sensor. When the feeding plate moves up to the upper limit position, the feeding plate is at the semi-circular track and has an inclination angle greater than 90°.

5. The automated feeding mechanism according to claim 4, wherein: The inclination angle of the feeding plate is 95° - 115°.

6. The automated feeding mechanism according to any one of claims 1 to 5, characterized in that: The automatic feeding mechanism further includes a control panel. The control panel sends instructions through a PLC to control the operation of the motor. A display screen, as well as "Start" and "Stop" buttons, are provided on the control panel.

Images