Double-row automatic weighing machine

Abstract

The utility model relates to a double-row automatic weighing machine, and belongs to the technical field of weighing machines. In order to solve the defects of high manufacturing cost, large noise and large error in the prior art, the utility model provides a double-row automatic weighing machine which is low in manufacturing cost, small in noise and small in error, is matched with a filling machine for use, is mounted below the filling machine, and comprises a support frame A, a support frame B and a controller which are arranged side by side, a conveying belt is arranged on the supporting frame A, a containing plate A is arranged at one end of the supporting frame B, a containing plate B is arranged at the other end of the supporting frame B, the height of the containing plate A is larger than that of the containing plate B. A slope roller is installed on the portion, between the containing plate A and the containing plate B, of the supporting frame B. A box shifting mechanism A is installed behind the end, close to the containing plate A, of the conveying belt. A box shifting mechanism B is installed on the right face of the containing plate A. Automatic weighing mechanisms are arranged below the containing plate A and the containing plate B. The conveying belt is driven by a driving mechanism installed on the supporting frame A.

Description

Technical Field

[0001] The utility model relates to a double-row automatic weighing machine, belonging to the technical field of weighing machines. Background Art

[0002] When packaging powder products, they need to be packed into boxes first, and then put into the boxes with packaging bags. After packing, they need to be weighed, tied and sealed. At first, they were weighed and packed manually, but with the advancement of technology, mechanical packaging began. At present, double-row automatic weighing machines are generally used for packaging. Existing double-row automatic weighing machines are as follows: Figure 1 As shown, a reduction motor is used to drive the double-row sprockets to rotate through a chain and then drive the rollers to rotate, so as to achieve the purpose of conveying the empty boxes. After the empty boxes reach the designated position, the rodless cylinder moves the empty boxes to the right, and the lifting cylinder is started, so that the empty boxes are higher than the conveying roller plane, and the powder is filled and weighed. After weighing, the cylinder is dropped, the reduction motor is started, and the finished powder is conveyed. This structure uses a reduction motor to drive the chain and double-row sprockets for transmission, which has high cost and high noise, and only weighs once, resulting in large errors. Summary of the invention

[0003] The utility model aims to solve the shortcomings of the prior art such as high manufacturing cost, high noise and large weighing error, and to provide a double-row automatic weighing machine with low manufacturing cost, low noise and small error.

[0004] The utility model is realized by the following technical solutions:

[0005] A double-row automatic weighing machine is used in conjunction with a filling machine and is installed below the filling machine. It includes a support frame A, a support frame B and a controller arranged side by side. The special feature of the machine is that a conveyor belt is arranged on the support frame A, a placement plate A is arranged at one end of the support frame B, and a placement plate B is arranged at the other end of the support frame B. The height of the placement plate A is higher than that of the placement plate B. A slope roller is installed on the support frame B between the placement plates A and B. A box-shifting mechanism A is installed behind one end of the conveyor belt near the placement plate A, and a box-shifting mechanism B is installed on the right side of the placement plate A. Automatic weighing mechanisms are arranged below the placement plates A and B, and the conveyor belt is driven by a driving mechanism installed on the support frame A.

[0006] Preferably, the driving mechanism comprises a reduction motor mounted on the support frame A, a driving sprocket is mounted on the output shaft of the reduction motor, the driving sprocket forms a chain transmission with a driven sprocket mounted on the driving roller through a chain, a driving roller is mounted on one end of the support frame A close to the placement plate A, a driven roller is mounted on one end close to the placement plate B, and the conveyor belt is sleeved on the driving roller and the driven roller;

[0007] Preferably, the conveyor belt is a PU endless belt;

[0008] Preferably, the shifting box mechanism A and the shifting box mechanism B are connected together by a frame, including a fixed plate installed in the frame, a cylinder seat is installed on the fixed plate, a rotating shaft is installed on the cylinder seat, the cylinder is installed on the rotating shaft, the cylinder rod of the cylinder is fixedly installed on a rocker, the rocker is installed on the fixed plate, a stopper shaft is installed at the end of the rocker, the cylinder in the shifting box mechanism A is controlled to open and close by the solenoid valve A, and the cylinder in the shifting box mechanism B is controlled to open and close by the solenoid valve B;

[0009] Preferably, the frame is a channel frame composed of rectangular steel pipes;

[0010] Preferably, the rocker is provided with a through hole, and the cylinder rod of the cylinder passes through the through hole and is fixed on the rocker;

[0011] Preferably, a rotating hole sleeve is provided above the rocker, the rotating hole sleeve is mounted on a bearing, and the bearing is mounted on a fixed shaft of the fixed plate;

[0012] Preferably, the ramp roller comprises a plurality of free-rotating rollers installed at intervals on the support frame B, which slide forward by relying on the slope to save power;

[0013] Preferably, wheels are installed under the support frame A and the support frame B to facilitate the movement of the entire device;

[0014] Preferably, a photoelectric switch A is installed at one end of the support frame A close to the placement plate A;

[0015] Preferably, a photoelectric switch B is installed at one end of the placement plate A;

[0016] Preferably, a stop roller is installed between the slope roller and the placement plate B.

[0017] Preferably, the controller is a single chip microcomputer or a PLC, and the controller is electrically connected to the photoelectric switch A, the photoelectric switch B, the solenoid valve A and the solenoid valve B of the control cylinder, the automatic weighing mechanism, and the switch of the filler.

[0018] The double-row automatic weighing machine of the utility model transports empty boxes by means of a conveyor belt, thereby reducing production costs and use costs, having low noise, and being easy to perform re-weighing. After the first weighing is completed, the powder box generates power by means of inertia and the slope roller, and no power source is required, and moves downward to the placement plate to complete the re-weighing process. The whole process is simple and cost-saving, and the accuracy is improved by performing two measurements, thereby improving the yield rate. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 : A top view of the prior art;

[0020] Figure 2: The front view of the utility model;

[0021] Figure 3 : Figure 2 Left view of;

[0022] Figure 4 : Figure 2 A top view of

[0023] Figure 5 : Figure 2 Structural schematic diagram of the middle support frame B;

[0024] Figure 6 : Structural diagram of the box-shifting mechanism;

[0025] In the figure: 1. Support frame A, 2. Support frame B, 3. Conveyor belt, 4. Placement plate A, 5. Placement plate B, 6. Inclined roller, 7. Reducer motor, 8. Driving sprocket, 9. Driven sprocket, 10. Driving roller, 11. Driven roller, 12. Fixed plate, 12-1, Fixed shaft, 13. Cylinder seat, 14. Rotating shaft, 15. Cylinder, 16. Rocker, 16-1, Through hole, 16-2, Rotating hole sleeve, 17. Stop shaft, 18. Wheel, 19. Photoelectric switch A, 20. Photoelectric switch B, 21. Stop roller, 22. Frame, 23. Automatic weighing mechanism, 24. Carton. Implementation

[0026] The following is a specific implementation of the present invention with reference to the accompanying drawings to further illustrate the present invention.

[0027] Example 1. Figure 2-5 A double-row automatic weighing machine shown is used in conjunction with a filler and is installed below the filler, comprising a support frame A1, a support frame B2 and a controller arranged side by side, a conveyor belt 3 is provided on the support frame A1, a placement plate A4 is provided at one end of the support frame B2, a placement plate B5 is provided at the other end of the support frame B2, the height of the placement plate A4 is higher than the height of the placement plate B5, a slope roller 6 is installed on the support frame B2 between the placement plate A4 and the placement plate B5, a box shifting mechanism A is installed behind one end of the conveyor belt 3 near the placement plate A, a box shifting mechanism B is installed on the right side of the placement plate A4, an automatic weighing mechanism 23 is provided below the placement plate A4 and the placement plate B5, and the conveyor belt 3 is driven by a driving mechanism installed on the support frame A1;

[0028] Wherein, the driving mechanism includes a reduction motor 7 installed on the support frame A1, a driving sprocket 8 is installed on the output shaft of the reduction motor 7, and the driving sprocket 8 forms a chain transmission with a driven sprocket 9 installed on the driving roller through a chain, a driving roller 10 is installed at one end of the support frame A1 close to the placement plate A4, and a driven roller 11 is installed at one end close to the placement plate B5, and the conveyor belt 3 is sleeved on the driving roller 10 and the driven roller 11. When the reduction motor 7 is turned on, the driving sprocket 8 is driven to rotate, and the rotating sprocket 8 drives the driven sprocket 9 to rotate through the chain, and the driving roller 10 rotates with the driven sprocket 9, and drives the driven roller to rotate through the conveyor belt 3;

[0029] Wherein, the conveyor belt 3 is a PU endless belt;

[0030] Among them, Figure 6 The shifting mechanism A and the shifting mechanism B shown are connected together by a frame 22, and include a fixed plate 12 installed in the frame 22, a cylinder seat 13 is installed on the fixed plate 12, a rotating shaft 14 is installed on the cylinder seat 13, the cylinder 15 is installed on the rotating shaft 14, the cylinder rod of the cylinder 15 is fixedly installed on a rocker 16, the rocker 16 is installed on the fixed plate 12, and a stopper shaft 17 is installed at the end of the rocker 16 for shifting the box, the cylinder in the shifting mechanism A is controlled to open and close by the solenoid valve A, and the cylinder in the shifting mechanism B is controlled to open and close by the solenoid valve B;

[0031] Wherein, the frame 22 is a trough-shaped frame composed of rectangular steel pipes;

[0032] The rocker 16 is provided with a through hole 16-1, and the cylinder rod of the cylinder 15 passes through the through hole and is fixed on the rocker 16;

[0033] Wherein, a rotating hole sleeve 16-2 is provided above the rocker 16, and the rotating hole sleeve 16-2 is installed on a bearing, and the bearing is installed on the fixed shaft 12-1 of the fixed plate 12. When the cylinder rod of the cylinder 15 is extended, the cylinder rod drives the rocker 16 to move to the left or rearward. When the carton needs to be swung, the cylinder rod of the cylinder is retracted, driving the rocker 16 to move to the right or forward, and the stop shaft 17 pushes the carton to move to the right or forward;

[0034] The ramp roller 6 includes a plurality of freely rotating rollers installed at intervals on the support frame B2. The height of the ramp roller close to the placement plate A is higher than that of the placement plate B. When the weighed carton is on the ramp roller, it rolls down by gravity without the need for a power source, thus saving energy.

[0035] Wherein, wheels 18 are installed under the support frame A1 and the support frame B2 to facilitate the movement of the entire device;

[0036] A photoelectric switch A19 is installed at one end of the support frame A1 close to the placement plate A4;

[0037] Wherein, a photoelectric switch B20 is installed at one end of the placement plate A4;

[0038] Wherein, a blocking roller 21 is installed between the ramp roller 6 and the placement plate B5;

[0039] Among them, the automatic weighing mechanism 23 is a commonly used automatic weighing mechanism, which belongs to the existing technology. This application is just an application of the existing automatic weighing mechanism.

[0040] The controller is a single chip microcomputer or a PLC, and is electrically connected to a photoelectric switch A19, a photoelectric switch B20, a solenoid valve A and a solenoid valve B of a control cylinder, an automatic weighing mechanism 23, and a switch of a filler.

[0041] The specific working process of the utility model is as follows: an empty carton 24 is placed on the conveyor belt 3, and the reduction motor 7 is started. The reduction motor 7 drives the active sprocket 8 to rotate, and the rotating sprocket 8 drives the driven sprocket 9 to rotate through the chain, and drives the active roller 10 to rotate. The conveyor belt between the active roller 10 and the driven roller 11 rotates, driving the carton 24 to move backward. When it reaches the support frame A corresponding to the placement plate A, the indicator light of the photoelectric switch A19 is on, and the box-shifting mechanism A, the initial state of the cylinder 13 is that the cylinder rod is extended, and the cylinder rod of the cylinder 13 is started to retract, and the cylinder rod drives the rocker 16 to move in the direction close to the support frame B2, and the blocking shaft 17 pushes the carton 24 to the placement plate A. At this time, the photoelectric switch B The indicator light is on, and the filler fills the carton 24. Since an automatic weighing mechanism is installed under the placement plate A, the weight of the filler can be detected. When the set weight is reached, the box shifting mechanism B on the right side of the placement plate A4 is placed, and the initial state of the cylinder 13 is that the cylinder rod is extended. At the same time, the cylinder rod of the cylinder 13 is started to retract, and the cylinder rod drives the rocker 16 to move toward the slope roller. The stop shaft 17 pushes the carton 24 to the slope roller. Using its own gravity, the carton 24 moves downward. When it reaches the stop roller 21, the carton 24 is stopped and the carton 24 is manually placed on the placement plate B. Since an automatic weighing mechanism 23 is installed under the placement plate B, it can be reweighed to check whether the weighing is accurate. If there is no problem with the accurate weighing, packaging can be carried out.

Claims

1. A double-row automatic weighing machine, used in conjunction with a filling machine, installed below the filling machine, comprising a support frame A (1), a support frame B (2) and a controller arranged side by side, characterized in that: A conveyor belt (3) is provided on the support frame A (1), a placement plate A (4) is provided at one end of the support frame B (2), and a placement plate B (5) is provided at the other end of the support frame B (2), the placement plate A (4) is higher than the placement plate B (5), a slope roller (6) is installed on the support frame B (2) between the placement plate A (4) and the placement plate B (5), a box shifting mechanism A is installed behind one end of the conveyor belt (3) close to the placement plate A, and a box shifting mechanism B is installed on the right side of the placement plate A (4), and automatic weighing mechanisms (23) are provided below the placement plates A (4) and B (5), and the conveyor belt (3) is driven by a driving mechanism installed on the support frame A (1).

2. A double-row automatic weighing machine according to claim 1, characterized in that: The driving mechanism comprises a reduction motor (7) mounted on a support frame A (1); a driving sprocket (8) is mounted on the output shaft of the reduction motor (7); the driving sprocket (8) forms a chain drive with a driven sprocket (9) mounted on a driving roller through a chain; a driving roller (10) is mounted on one end of the support frame A (1) close to the placement plate A (4); a driven roller (11) is mounted on one end of the support frame A (1) close to the placement plate B (5); and the conveyor belt (3) is sleeved on the driving roller (10) and the driven roller (11).

3. A double-row automatic weighing machine according to claim 1 or 2, characterized in that: The shifting mechanism A and the shifting mechanism B are connected together by a frame (22), and include a fixed plate (12) installed in the frame (22), a cylinder seat (13) installed on the fixed plate (12), a rotating shaft (14) installed on the cylinder seat (13), the cylinder (15) installed on the rotating shaft (14), the cylinder rod of the cylinder (15) fixedly installed on a rocker (16), the rocker (16) installed on the fixed plate (12), a stopper shaft (17) installed at the end of the rocker (16), the cylinder in the shifting mechanism A is controlled to open and close by the solenoid valve A, and the cylinder in the shifting mechanism B is controlled to open and close by the solenoid valve B.

4. A double-row automatic weighing machine according to claim 3, characterized in that: The rocker (16) is provided with a through hole (16-1), and the cylinder rod of the cylinder (15) passes through the through hole and is fixed on the rocker (16).

5. A double-row automatic weighing machine according to claim 4, characterized in that: A rotating hole sleeve (16-2) is provided above the rocker (16), the rotating hole sleeve (16-2) is mounted on a bearing, and the bearing is mounted on a fixed shaft (12-1) of the fixed plate (12).

6. A double-row automatic weighing machine according to claim 5, characterized in that: The frame (22) is a trough-shaped frame composed of rectangular steel pipes; the conveyor belt (3) is a PU endless belt.

7. A double-row automatic weighing machine according to claim 6, characterized in that: The ramp roller (6) comprises a plurality of freely rotating rollers installed at intervals on a support frame B (2).

8. A double-row automatic weighing machine according to claim 7, characterized in that: Wheels (18) are installed at the bottom of the support frame A (1) and the support frame B (2); a photoelectric switch A (19) is installed at one end of the support frame A (1) close to the placement plate A (4); and a photoelectric switch B (20) is installed at one end of the placement plate A (4).

9. A double-row automatic weighing machine according to claim 8, characterized in that: A stop roller (21) is installed between the slope roller (6) and the placement plate B (5).

10. A double-row automatic weighing machine according to claim 9, characterized in that: The controller is a single chip microcomputer or a PLC, and is electrically connected to a photoelectric switch A (19), a photoelectric switch B (20), a solenoid valve A for controlling the air cylinder, a solenoid valve B, an automatic weighing mechanism (23), and a switch of the filling machine.

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