Weighing stock bin mechanism of automatic material distribution system

Abstract

The utility model provides a weighing stock bin mechanism of an automatic material distribution system, which comprises a rack, and the rack is provided with a storage hopper, a blanking hopper, a belt conveyor and a weighing hopper assembly from top to bottom; the blanking hopper comprises a stirring screw rod, a screw rod driving device, a material level meter and a vibration motor; the belt conveyor comprises a conveying frame, a roller, a conveying belt, a conveying belt driving device, a material control gate and a material control gate driving device. The weighing hopper assembly comprises a sliding rail, a sliding frame, a movement driving device, a weighing sensor, a weighing hopper, a discharging gate and a discharging gate driving device. According to the utility model, automatic blanking and automatic weighing can be realized, the automation degree is high, the double stirring screws are arranged in the blanking hopper, bridging caused by stacking can be prevented, the blanking is smoother, and the weighing hopper continuously moves back and forth in a small range when receiving materials discharged from a conveying belt, so that the segregation of the materials is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of automatic material distribution, in particular to a weighing bin mechanism of an automatic material distribution system. Background Art

[0002] At present, the pressing process of refractory friction press on site generally adopts manual laying or special equipment laying. Due to the relatively harsh environment, loud noise, high labor intensity and low efficiency of manual laying, the laying application of special equipment currently has the defects of low flexibility, complex operation, and need to move equipment to replace molds.

[0003] Therefore, it is necessary to design an automatic material distribution system that integrates automatic weighing, automatic material distribution, automatic mold grinding, automatic spraying of release agent and other functions to solve the problems existing in existing manual material distribution and special equipment material distribution.

[0004] To design the above automatic material distribution system, the first difficulty is how to realize automatic weighing. Because the weight of the powder material of the friction press requires high precision, and there are certain requirements for powder material segregation, there is a certain probability that the existing powder material in the hopper will bridge due to the stacking process, and the material cannot be discharged. Utility Model Content

[0005] The utility model proposes a weighing silo mechanism of an automatic material distribution system, which solves the problems of low weighing accuracy, unsmooth material feeding and powder material segregation in the pressing link of the existing refractory friction press.

[0006] The technical solution of the utility model is achieved in this way:

[0007] The weighing silo mechanism of the automatic material distribution system includes a frame, on which a storage hopper, a lower hopper, a belt conveyor and a weighing hopper assembly are installed from top to bottom; the storage hopper and the lower hopper are both fixed on the frame, the upper end of the lower hopper is connected to the lower end of the storage hopper, and two symmetrically arranged stirring screws are rotatably arranged in the lower hopper, and the stirring screws are transmission-connected with a screw driving device for driving the stirring screws to rotate, and the two stirring screws are used to prevent material bridging, and a level device for sensing the material level is also arranged in the lower hopper, and at least one vibration motor is fixed on the outer side of the lower hopper, and a discharge port is provided at the lower end of the lower hopper; the belt conveyor includes a conveying frame horizontally fixed on the frame, and rollers are rotatably arranged at both ends of the conveying frame, and conveyor belts are arranged on the outer covers of the two rollers, and one of the rollers The conveyor belt drive device is transmission-connected to drive the rotation of the conveyor belt, and the discharge end of the conveyor frame is provided with a material control gate located above the conveyor belt. The material control gate is transmission-connected to a material control gate drive device for driving the material control gate to control the amount of material discharged from the conveyor belt. The weighing bucket assembly includes two slide rails symmetrically fixed on the frame, and the direction of the slide rails is the same as the feeding direction of the conveyor belt. A sliding frame is slidingly arranged on the slide rails, and the sliding frame is transmission-connected to a moving drive device for driving the sliding frame to move along the slide rails. A number of weighing sensors are fixed on the upper end surface of the sliding frame, and a weighing bucket is installed on the weighing sensor. The weighing bucket is located below the discharge end of the conveyor belt, and an openable and closable discharge gate is provided at the bottom of the weighing bucket. The discharge gate is transmission-connected to a discharge gate drive device for driving the discharge gate to open and close.

[0008] Furthermore, the storage hopper is a cylindrical hopper body, and the lower hopper is a hopper body that is larger at the top and smaller at the bottom.

[0009] Furthermore, the screw driving device is a reduction motor, a first sprocket is fixed on the output shaft of the reduction motor, a second sprocket matching the first sprocket is fixed at one end of the stirring screw, and the first sprocket and the second sprocket are connected by a chain transmission.

[0010] Furthermore, a plurality of unpowered rollers are arranged in the conveyor belt, the unpowered rollers are parallel to the rollers, and both ends of the unpowered rollers are rotatably connected to the conveyor frame.

[0011] Furthermore, the conveyor belt driving device is a reduction motor.

[0012] Furthermore, the material control gate is a U-shaped plate, which is fixedly connected to a rotating shaft leading to both ends, and both ends of the rotating shaft are rotatably connected to the conveying frame; the material control gate driving device includes a cylinder, the cylinder body end of the cylinder is hinged on the connecting plate, the connecting plate is fixedly connected to the conveying frame, the push rod end of the cylinder is hinged to one end of the push rod, and the other end of the push rod is fixedly connected to one end of the rotating shaft.

[0013] Furthermore, the mobile drive device includes a servo motor and a rack. The servo motor is fixedly connected to one of the slide rails via a mounting frame. A gear is fixedly connected to the output shaft of the servo motor. The rack is fixedly connected to the sliding frame, and the gear is meshed with the rack.

[0014] Furthermore, a dust shield is fixed on the discharge end of the conveyor frame, and the dust shield is arranged at an interval from the conveyor belt.

[0015] Furthermore, the discharge gate is rotatably connected to the bottom of the weighing bucket, and the discharge gate driving device is a cylinder 1, which is transmission-connected to the discharge gate for driving the discharge gate to open and close.

[0016] Furthermore, the sliding frame is fixed with a plurality of sliding blocks that cooperate with the sliding rails.

[0017] The beneficial effects of the utility model are as follows: 1. The utility model can realize automatic unloading and automatic weighing with a high degree of automation; a double stirring screw is arranged in the unloading hopper to prevent bridging caused by stacking pressure and to make unloading smoother; 2. The material level device can detect whether the position where material needs to be added is reached to realize automatic detection of material addition; 3. The vibration motor can prevent the material from sticking to the inner wall of the unloading hopper; 4. When the weighing sensor under the weighing hopper detects that the material is about to reach the specified weight, the material control gate approaches the conveyor belt to reduce the interval between the material control gate and the conveyor belt, blocking a part of the material on the conveyor belt and feeding a small amount of material to ensure that the weighing hopper weighs more accurately; 5. When the weighing hopper receives the material coming down from the conveyor belt, it moves back and forth in small amplitude to prevent material segregation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 It is a three-dimensional diagram of the utility model;

[0020] Figure 2 A three-dimensional diagram of the present invention from another angle;

[0021] Figure 3 It is a three-dimensional diagram of the lower hopper in the utility model;

[0022] Figure 4 It is a three-dimensional diagram of the belt conveyor in the utility model;

[0023] Figure 5It is a three-dimensional diagram of the central material control gate of the utility model;

[0024] Figure 6 It is a three-dimensional diagram of the weighing bucket assembly in the utility model.

[0025] Reference numerals in the figure: 1-frame, 2-storage hopper, 3-lower hopper, 4-belt conveyor, 5-weighing bucket assembly, 31-stirring screw, 32-level indicator, 33-vibration motor, 34-reduction motor, 35-first sprocket, 36-second sprocket, 40-dust shield, 41-conveyor frame, 42-roller, 43-conveyor belt, 44-unpowered roller, 45-reduction motor 1, 46-U-shaped plate, 47-cylinder, 48-connecting plate, 49-push rod, 51-slide rail, 52-slide frame, 53-weighing sensor, 54-weighing bucket, 55-servo motor, 56-rack, 57-mounting frame, 58-slider. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] Reference Figure 1-6The weighing silo mechanism of the automatic material distribution system includes a frame 1, on which a storage hopper 2, a lower hopper 3, a belt conveyor 4 and a weighing hopper assembly 5 are installed from top to bottom; the storage hopper 1 and the lower hopper 3 are both fixed on the frame 1, the upper end of the lower hopper 3 is connected to the lower end of the storage hopper 2, and two symmetrically arranged stirring screws 31 are rotatably arranged in the lower hopper 3, and the stirring screws 31 are transmission-connected with a screw driving device for driving the stirring screws to rotate, and the two stirring screws 31 are used to prevent material bridging, and a level device 32 for sensing the material level is also arranged in the lower hopper 3, at least one vibration motor 33 is fixed on the outer side of the lower hopper 3, and a discharge port is opened at the lower end of the lower hopper 3; the belt conveyor 4 includes a conveying frame 41 horizontally fixed on the frame, and rollers 42 are rotatably arranged at both ends of the conveying frame 41, and the two rollers 42 are covered with conveyor belts 43, one of the rollers 42 is transmission connected with a conveyor belt driving device for driving its rotation, the discharge end of the conveyor frame 41 is provided with a material control gate located above the conveyor belt 43, and the material control gate is transmission connected with a material control gate driving device for driving the material control gate to control the amount of material discharged from the conveyor belt; the weighing bucket assembly 5 includes two slide rails 51 symmetrically fixed on the frame, the direction of the slide rails 51 is the same as the feeding direction of the conveyor belt 43, a sliding frame 52 is slidingly arranged on the slide rails 51, the sliding frame 52 is transmission connected with a moving driving device for driving the sliding frame 52 to move along the slide rails 51, a plurality of weighing sensors 53 are fixed on the upper end surface of the sliding frame 52, a weighing bucket 54 is installed on the weighing sensor 53, the weighing bucket 54 is located below the discharge end of the conveyor belt 43, and an openable and closable discharge gate is provided at the bottom of the weighing bucket 54, and the discharge gate is transmission connected with a discharge gate driving device for driving the discharge gate to open and close.

[0028] As a further implementation scheme, the storage hopper 2 is a cylindrical hopper body, and the lower hopper 3 is a hopper body that is larger at the top and smaller at the bottom.

[0029] As a further implementation scheme, the screw driving device is a reduction motor 34, a first sprocket 35 is fixed on the output shaft of the reduction motor 34, a second sprocket 36 that cooperates with the first sprocket 35 is fixed at one end of the stirring screw 31, and the first sprocket 35 and the second sprocket 36 are connected by a chain transmission.

[0030] As a further implementation scheme, a plurality of unpowered rollers 44 are arranged in the conveyor belt 43. The unpowered rollers 44 are parallel to the rollers 42, and both ends of the unpowered rollers 44 are rotatably connected to the conveyor frame.

[0031] As a further implementation scheme, the conveyor belt driving device is a reduction motor 45.

[0032] As a further implementation scheme, the material control gate is a U-shaped plate 46, which is fixedly connected with a rotating shaft leading to both ends, and the two ends of the rotating shaft are rotatably connected to the conveying frame 41; the material control gate driving device includes a cylinder 47, the cylinder body end of the cylinder is hinged on the connecting plate 48, the connecting plate 48 is fixedly connected to the conveying frame 41, the push rod end of the cylinder 47 is hinged to one end of the push rod 49, and the other end of the push rod 49 is fixedly connected to one end of the rotating shaft.

[0033] As a further implementation scheme, the mobile drive device includes a servo motor 55 and a rack 56. The servo motor is fixedly connected to one of the slide rails 51 through a mounting frame 57. A gear is fixedly connected to the output shaft of the servo motor 55. The rack 56 is fixedly connected to the sliding frame 52, and the gear is meshed with the rack 56.

[0034] As a further implementation scheme, a dust shield 40 is fixed to the discharge end of the conveying frame 41 , and the dust shield 40 is arranged at an interval from the conveying belt 43 .

[0035] As a further implementation scheme, the discharge gate is rotatably connected to the bottom of the weighing bucket 54, and the discharge gate driving device is a cylinder 1, which is transmission-connected to the discharge gate for driving the discharge gate to open and close.

[0036] As a further embodiment, the sliding frame 52 is fixed with a plurality of sliding blocks 58 that cooperate with the sliding rails 51 .

[0037] The working principle of this utility model:

[0038] The on-site operator hoists the powdered material into the storage hopper 2, and the material enters the lower hopper 3 from the storage hopper 2, and enters the conveyor belt 43 below under the action of the stirring screw 31. The use of double stirring screws 31 can prevent the pile pressure from causing bridging, and the material discharge is smoother. The vibration motor 33 can prevent the material from sticking to the inner wall of the lower hopper 3. The level sensor 32 can detect whether the position where material needs to be added is reached, and realize automatic detection of material addition. The conveyor belt 43 transports the material forward and drops it into the weighing hopper 54. The weighing hopper 54 moves back and forth along the slide rail 51 in a small range driven by the servo motor 55. The weighing sensor 53 detects the weight of the material in the weighing bucket 54. When the material in the weighing bucket 54 is about to reach the specified weight, the cylinder pushes the U-shaped plate 46 to rotate, so that the interval between the U-shaped plate 46 and the conveyor belt 43 becomes smaller, blocking a part of the material on the conveyor belt 43, reducing the material entering the weighing bucket 54, and at the same time the speed of the conveyor belt 43 is slowed down to achieve fine control, ensuring that the weighing bucket 54 weighs more accurately. After weighing, the weighing bucket 54 moves to the end, opens the discharge gate, and allows the material in the weighing bucket to enter the next distribution bucket.

[0039] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. The weighing silo mechanism of the automatic material distribution system is characterized by: The machine comprises a frame, on which a storage hopper, a lower hopper, a belt conveyor and a weighing hopper assembly are installed from top to bottom; The storage hopper and the lower hopper are both fixed on the frame, the upper end of the lower hopper is connected to the lower end of the storage hopper, two symmetrically arranged stirring screws are arranged to rotate in the lower hopper, the stirring screws are connected to a screw driving device for driving the stirring screws to rotate, the two stirring screws are used to prevent material bridging, a level sensor for sensing the material level is also arranged in the lower hopper, at least one vibration motor is fixed on the outer side of the lower hopper, and a discharge port is opened at the lower end of the lower hopper; The belt conveyor includes a conveyor frame fixed horizontally on a frame, rollers are rotatably arranged at both ends of the conveyor frame, and conveyor belts are arranged on the outer covers of the two rollers, one of the rollers is drivingly connected to a conveyor belt driving device for driving its rotation, and a material control gate located above the conveyor belt is arranged at the discharge end of the conveyor frame, and the material control gate is drivingly connected to a material control gate driving device for driving the material control gate to control the material discharge amount of the conveyor belt; The weighing bucket assembly includes two slide rails symmetrically fixed on the frame, the direction of the slide rails is the same as the feeding direction of the conveyor belt, a sliding frame is slidably arranged on the slide rails, the sliding frame is transmission-connected with a moving drive device for driving the sliding frame to move along the slide rails, a plurality of weighing sensors are fixed on the upper end surface of the sliding frame, a weighing bucket is installed on the weighing sensor, the weighing bucket is located below the discharge end of the conveyor belt, an openable and closable discharge gate is arranged at the bottom of the weighing bucket, and the discharge gate is transmission-connected with a discharge gate drive device for driving the discharge gate to open and close.

2. The weighing silo mechanism of the automatic material distribution system according to claim 1, characterized in that: The storage hopper is a cylindrical hopper body, and the lower hopper is a hopper body that is larger at the top and smaller at the bottom.

3. The weighing silo mechanism of the automatic material distribution system according to claim 1, characterized in that: The screw driving device is a reduction motor, a first sprocket is fixed on the output shaft of the reduction motor, a second sprocket matched with the first sprocket is fixed at one end of the stirring screw, and the first sprocket and the second sprocket are connected by a chain transmission.

4. The weighing silo mechanism of the automatic material distribution system according to claim 1, characterized in that: A plurality of unpowered rollers are arranged in the conveyor belt, the unpowered rollers are parallel to the rollers, and the two ends of the unpowered rollers are rotatably connected to the conveyor frame.

5. The weighing silo mechanism of the automatic material distribution system according to claim 1, characterized in that: The conveyor belt driving device is a reduction motor 1.

6. The weighing silo mechanism of the automatic material distribution system according to claim 1, characterized in that: The material control gate is a U-shaped plate, which is fixedly connected to a rotating shaft leading to both ends, and the two ends of the rotating shaft are rotatably connected to the conveying frame; the material control gate driving device includes a cylinder, the cylinder body end of the cylinder is hinged on the connecting plate, the connecting plate is fixedly connected to the conveying frame, the push rod end of the cylinder is hinged to one end of the push rod, and the other end of the push rod is fixedly connected to one end of the rotating shaft.

7. The weighing bin mechanism of the automatic material distribution system according to claim 1, characterized in that: The mobile driving device includes a servo motor and a rack. The servo motor is fixedly connected to one of the slide rails through a mounting frame. A gear is fixedly connected to the output shaft of the servo motor. The rack is fixedly connected to the sliding frame, and the gear is meshed with the rack.

8. The weighing bin mechanism of the automatic material distribution system according to claim 1, characterized in that: A dust shield is also fixed on the discharging end of the conveying frame, and the dust shield is arranged at an interval from the conveying belt.

9. The weighing bin mechanism of the automatic material distribution system according to claim 1, characterized in that: The discharging gate is rotatably connected to the lower part of the weighing bucket, and the discharging gate driving device is a cylinder 1, which is transmission-connected to the discharging gate for driving the discharging gate to open and close.

10. The weighing bin mechanism of the automatic material distribution system according to claim 1, characterized in that: A plurality of sliding blocks matched with the sliding rails are fixed on the sliding frame.

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