Patent Application
20150122554
The present invention relates to a method for achieving accurate weighing of materials through the physical deformation of a sensing device caused by a vertical pull force. The present invention mainly applies in weighing and verifying materials on a large scale with high accuracy, and belongs to the field for transporting rubbery or plastic materials.
At present, check weighing scales of carbon-steel structure are available for the production process of material transfer or check weighing of materials, such as being utilized in check weighing of formula of adhesives in manufacturing rubber tires.
The check weighing scale of carbon-steel structure is known for short weighing time. However, the accuracy of the check weighing scale is not high due to its heavy self weight and the sensors utilized with large strokes. Moreover, the deformation of the carbon-steel check weighing scale may lead to inaccurate weighing and further induce defects in formula of adhesives, and eventually affect the quality of products.
The present invention provides a method for check weighing of materials and a check weighing device thereof with the aim of solving the above-mentioned problems in the prior art. The method for check weighing of materials comprises the following steps: exerting a vertical downward force due to gravity on a weighing device; transferring the vertical downward force exerted by materials to the ball-shaped components which are arranged at ends of the suspension mechanism and connected with concave brackets through rigid parts of the weighing device; detecting the deformation of a sensing device caused by the vertical downward force exerted by the suspension mechanism so as to weigh materials; comparing prior weighing readings of materials after being proportioned with weighing readings of check weighing to accomplish the process of check weighing of materials.
One of the objects of the present invention is to solve the problem of low accuracy in weighing materials due to impacts of external environment for improving accuracy in check weighing materials.
The second object of the present invention is to adjust the way of connecting the sensing device with check weighing scale. Hence, the suspension mechanism is utilized to connect the sensing device with the check weighing device. To be specific, the ball-shaped components arranged on the suspension mechanism are adopted to connect with concave brackets arranged at ends of the sensing device in an engaged manner, so as to achieve accurate weighing of materials.
Further, another object of the present invention is to replace the main frame of the weighing device made of carbon-steel material with aluminum material to effectively overcome the shortcoming of low accuracy in weighing caused by the self weight of check weighing scale, so as to improve the weighing accuracy of the weighing device.
In order to achieve the above-identified objects, the method for check weighing materials is described as follows:
As being transferred, proportioned materials which have been weighed are driven by a main transmission device to move forward. When the induction device which is at least mounted on one side of the weighing device detects the materials, the main transmission device stops rotating and the materials exert a vertical downward force on the weighing device due to gravity.
Then the vertical downward force exerted by the materials is transferred to the ball-shaped components which are arranged at ends of the suspension mechanism and connected with the concave brackets. The deformation of the sensing device caused by the vertical downward force exerted by the suspension mechanism is detected to weigh materials. After comparison of prior weighing readings of materials after being proportioned with weighing readings of check weighing, the process of check weighing of materials is accomplished.
One end of the sensing device is fixedly connected with the truss and the other end of the sensing device is connected with the main frame of the weighing device by the suspension mechanism, so as to lower the impact caused by external environment on the accuracy of the weighing device.
Both ends of the suspension mechanism are respectively fixedly connected with the sensing device and the concave brackets on the weighing device through the ball-shaped components of the suspension mechanism in an engaged manner and the contact area between each ball-shaped component and concave bracket is equal or less than 180 degrees, so as to realize the accurate weighing of materials.
In order to achieve the above-identified objects of the present invention, the check weighing device mainly comprises:
a main transmission device comprising a main driven roller and a driving motor which is arranged inside the main driven roller and used for driving convey belts to move in a cyclic manner;
a weighing device comprising the main frame, which may be made of aluminum for reducing the self weight of the check weighing device, and the truss used for bearing vertical pulling forces or stresses caused by loads;
a suspension mechanism comprising the ball-shaped components respectively connected with one end of the weighing device and one end of the sensing device, and metal pulling cords connected with the ball-shaped components.
The main transmission device which is used for driving materials to move forward is mounted at a lateral end of the main frame of the weighing device, and the induction device which is used for detecting the position of materials is fixedly arranged on at least one side of the main frame of the weighing device.
One or more groups of the sensing devices are fixedly arranged under the main frame of the weighing device. One end of the sensing device is connected with the main frame of the weighing device through the suspension mechanism. Each concave bracket of the suspension mechanism is vertically inserted into the adjustment wire thread insert and the adjusting device which is used for preventing the metal pulling cords from deviating from orthocenter is vertically connected outside the adjustment wire thread insert in a sleeved manner, so as to ensure the metal pulling cords keeping vertically. The truss of the weighing device is respectively connected with the support legs through U-shaped brackets, so as to ensure accurate check weighing of materials.
As described in the above-mentioned basic technical solution, materials exerts vertical downward force on the weighing device due to gravity, the vertical downward force exerted by the materials is transferred to the ball-shaped components which are arranged at ends of the suspension mechanism and connected with the concave brackets. The deformation of the sensing device caused by the vertical downward force exerted by the suspension mechanism is detected to weigh materials.
In summary, the method for check weighing of materials and the check weighing device thereof has the advantages and positive results in that:
With reference to the below drawings, detailed description of the present invention is presented as follows:
As shown in the
As shown in the
During the materials transportation process, proportioned materials which have been weighed are driven by the main transmission device 30 to move forward. When the induction device 2 which is at least mounted on one side of the weighing device 40 detects the materials, the main transmission device 30 stops rotating and the materials exert a downward vertical force due to gravity on the weighing device 40.
Meanwhile, the vertical force exerted by the materials is transferred to the ball-shaped components 51 which are positioned at one end of the suspension mechanism 50 and connected with the concave brackets 6 through rigid parts of the weighing device 40. The deformation of the sensing device 40 occurs due to the downward force passing by the suspension mechanism 50 so as to weigh materials. After comparison of the weight readings of the materials after being proportioned with the check weighing readings, the process of check weighing of materials is completed.
One end of the sensing device 1 is fixedly connected with the truss 42 and the other end of the sensing device 1 is connected with the main frame 41 of the weighing device 40 through the suspension mechanism 50, so as to lower the impact caused by external environment on the accuracy of the weighing device.
Both ends of the suspension mechanism 50 are respectively fixedly connected with the sensing device 1 and the concave brackets 6 on the weighing device 40 through the ball-shaped components 51 of the suspension mechanism 50 in an engaged manner and the contact area between each ball-shaped component 51 and concave bracket 6 is equal or less than 180 degrees, so as to realize the accurate weighing of materials.
In order to achieve the above-identified objects, the check weighing device utilized mainly comprises:
a main transmission device 30 comprising the main driven roller 31 and a driving motor which is arranged inside the main driven roller 31 and used for driving convey belts to move in a cyclic manner;
a weighing device 40 comprising a main frame 41 made of aluminum for reducing the self weight of the check weighing device and the truss 42 used for bearing vertical pulling forces or stresses caused by loads;
a suspension mechanism 50, which includes the ball-shaped components 51 respectively connected with one end of the weighing device 40 and one end of the sensing device 1, and metal pulling cords 52 connected with the ball-shaped components 51, the metal pulling cords 52 being made of steel wire.
The main transmission device 30 which is used for driving materials to move forward is mounted at a lateral end of the main frame 41 of the weighing device 40, and the induction device 2 which is used for detecting the position of materials is fixedly arranged on at least one side of the main frame 41 of the weighing device 40.
One or more groups of the sensing devices 1 are fixedly arranged under the main frame 41 of the weighing device 40. One end of the sensing device 1 is connected with the main frame 41 of the weighing device 40 through the suspension mechanism 50. The concave bracket 6 of the suspension mechanism 50 is vertically inserted into the adjustment wire thread insert 53 and the adjusting device 54 which is used for preventing the metal pulling cords 52 from deviating from orthocenter is vertically connected outside the adjustment wire thread insert 53 in a sleeved manner, so as to ensure the metal pulling cords 52 being kept vertical. The truss 42 of the weighing device 40 is respectively connected with the support legs 8 through the U-shaped bracket 7, so as to ensure accurate check weighing of materials.
| Number | Date | Country | Kind |
|---|---|---|---|
| 201210124001.8 | Apr 2012 | CN | national |
| Filing Document | Filing Date | Country | Kind |
|---|---|---|---|
| PCT/CN2013/072505 | 3/12/2013 | WO | 00 |
