CN111238610B - Weighing device - Google Patents

Weighing device Download PDF

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Publication number
CN111238610B
CN111238610B CN202010124167.4A CN202010124167A CN111238610B CN 111238610 B CN111238610 B CN 111238610B CN 202010124167 A CN202010124167 A CN 202010124167A CN 111238610 B CN111238610 B CN 111238610B
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China
Prior art keywords
belt
pulley
length
belt pulley
weighing
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CN111238610A (en
Inventor
刘启明
程健
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Shanghai 100me Network Technology Co ltd
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Shanghai 100me Network Technology Co ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/003—Details; specially adapted accessories
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/006—Special taring or checking devices therefor
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01G—WEIGHING
    • G01G11/00—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers
    • G01G11/08—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge
    • G01G11/12—Apparatus for weighing a continuous stream of material during flow; Conveyor belt weighers having means for controlling the rate of feed or discharge by controlling the speed of the belt

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Auxiliary Devices For And Details Of Packaging Control (AREA)

Abstract

The invention discloses a weighing device, which comprises a weighing machine, wherein the weighing machine comprises a weighing belt, a first belt pulley, a second belt pulley, a weight detector and a first length adjusting device, the weighing belt is matched with the first belt pulley and the second belt pulley, and a weighing belt section positioned above the first belt pulley and the second belt pulley is called a first belt section; the weight detector is used for measuring the weight of the material to be measured placed on the first belt section; at least one movable pulley is present in the first pulley and the second pulley, and the first length adjustment device changes the length of the first belt segment by adjusting the movable pulley. Through the direction removal that first length controlling means control movable pulley is to being close to or keeping away from another belt pulley for the length of the first belt section of the material that awaits measuring can self-adaptation regulation be placed to the weighing machine, thereby weighing device can adapt to the demand of weighing of various article class materials, and the commonality is better.

Description

Weighing device
Technical Field
The invention relates to the technical field of measurement, in particular to a weighing device.
Background
In the prior art, the weighing device is generally composed of a weighing belt and a weight sensor, which is arranged at the bottom of the weighing belt. During weighing, the material to be measured is manually placed on the weighing belt, and after the weight sensor measures the weight of the material to be measured, the material to be measured is manually taken down.
However, in this method, the length of the weighing belt for placing the material to be measured is fixed, so that this method is only suitable for weighing a single kind of material, and the weighing effect on other kinds of materials is not good. For example, if the length of placing the weighing belt of the material that awaits measuring is shorter, short materials such as potato, potato can all be located weighing belt, and article class material such as celery, chinese yam then has some to be located weighing belt's outside, so, if the leaf dish that is located outside touches other devices, then can lead to the measuring error of long article class material great.
In summary, there is a need for a weighing apparatus for solving the technical problem that the weighing apparatus in the prior art is only suitable for weighing a single kind of material.
Disclosure of Invention
The invention provides a weighing device, which is used for solving the technical problem that the weighing device in the prior art can only be suitable for weighing a single material.
The invention provides a weighing device, comprising:
the weighing device comprises a weighing machine, and the weighing machine comprises a weighing belt, a first belt pulley, a second belt pulley, a weight detector and a first length adjusting device; the weighing belt is matched with the first belt pulley and the second belt pulley, a weighing belt section positioned above the first belt pulley and the second belt pulley is called a first belt section, and a weighing belt section positioned below the first belt pulley and the second belt pulley is called a second belt section; the weight detector is positioned below the first belt segment and used for measuring the weight of the material to be measured placed on the first belt segment; at least one movable pulley is present in the first pulley and the second pulley; the first length adjustment device changes the length of the first belt segment by adjusting the movable pulley.
According to the invention, the movable belt pulley is controlled by the first length control device to move towards the direction close to or away from the other belt pulley, so that the length of the first belt section for placing the material to be measured on the weighing machine can be adjusted in a self-adaptive manner, and thus, the weighing device can adapt to the weighing requirements of various materials and has better universality.
In one possible implementation, the first pulley and the second pulley are connected by a length lengthening device; the first length adjustment device comprises a transmission member, a first end of which is in contact with the second belt segment; the first length adjusting device drives the transmission part to move, the compression degree of the first end of the transmission part to the second belt section is changed, and the movable belt pulley is controlled to move towards or away from the other belt pulley according to the pressure difference between the pressure of the second belt section to the movable belt pulley and the pressure of the length lengthening device to the movable belt pulley.
In the above implementation, since the first pulley and the second pulley are connected by the length lengthening device, when the first length adjustment device changes the degree of compression of the second belt segment, the movable pulley of the first pulley and the second pulley can be moved by compressing the length lengthening device; in addition, in the mode, the first length adjusting device can only compress or relax the second belt section without independently controlling the movable belt pulley, so that the structure is simpler, and the cost is lower.
In a possible implementation manner, the first length adjusting device comprises a transmission component, a first end of the transmission component is in contact with the second belt segment, and a second end of the transmission component is fixedly connected with the movable belt pulley; the first length adjusting device drives the transmission part to move, the compression degree of the first end of the transmission part to the second belt section is changed, and the second end of the transmission part drives the movable belt pulley to move towards or away from the other belt pulley.
In above-mentioned implementation, through setting up first length adjustment device when changing the compression degree to the second belt section, the control movable pulley corresponds the removal, can realize the accurate adjustment to the length of first belt section with both complex modes, and the precision is higher.
In one possible implementation, the first length adjustment device further comprises a servo motor and a ball screw; the head of the ball screw is connected with the servo motor, and the tail of the ball screw is spirally connected with the transmission part; the servo motor controls the ball screw to rotate, and drives the transmission part to spirally move on the ball screw.
In above-mentioned implementation, through the above cooperation form that sets up servo motor, ball and drive disk assembly, can directly realize the compression of second belt section and the cooperative control of movable belt pulley through servo motor, and need not to carry out independent control respectively to user's operation is simpler, is convenient for realize.
In a possible implementation manner, the first length adjusting device further comprises a guide mechanism, and the transmission component is further connected with the guide mechanism in a sliding manner; the guide mechanism is used for controlling the transmission component to slide along the direction of the first belt segment when the transmission component moves spirally on the ball screw.
In above-mentioned implementation, through setting up the moving direction that guiding mechanism retrained drive disk assembly, can guarantee that drive disk assembly drives movable belt pulley and removes along the direction of being close to or keeping away from another belt pulley, so, drive disk assembly's removal can all be turned into the growth length of first belt section, improves the conversion efficiency of removal and belt section length.
In one possible implementation, the first end is provided with a driven roller, and the second belt segment is in cooperative contact with the driven roller.
In above-mentioned implementation, through set up the driven roller at drive disk assembly's first end for the second belt section can realize the contact with drive disk assembly's first end through driven roller, so, when first end changes the compression degree to the second belt section, driven roller not only can reduce the frictional force of first end and second belt section, can also make the belt pass more laborsavingly.
In one possible implementation manner, the weighing machine further comprises a first variable frequency motor; the first variable frequency motor is fixedly connected with a third belt pulley, and the third belt pulley is matched with the second belt section; and the first variable frequency motor is used for changing the rotating speed of the third belt pulley so as to change the speed of the first belt section for conveying the material to be detected.
In above-mentioned implementation, adjust the conveyer speed of weighing machine to the material that awaits measuring through setting up inverter motor, can satisfy different weighing demand and productivity demand, for example to the material that awaits measuring that packs slowly, can suitably slow down the conveyer speed of weighing machine to the material that awaits measuring, to the material that awaits measuring that packs soon, can suitably accelerate the conveyer speed of weighing machine to the material that awaits measuring.
In one possible implementation, the device further comprises a material input machine, wherein the material input machine comprises a material input belt, a fourth belt pulley, a fifth belt pulley and a second length adjusting device; the material input belt is matched with the fourth belt pulley and the fifth belt pulley, a material input belt section positioned above the fourth belt pulley and the fifth belt pulley is called a third belt section, and a material input belt section positioned below the fourth belt pulley and the fifth belt pulley is called a fourth belt section; the third belt section is used for placing and conveying the material to be detected, and the output end of the third belt section is close to the input end of the first belt section; at least one movable pulley is present in the fourth pulley and the fifth pulley; and the second length adjusting device is used for reversely changing the length of the third belt section by adjusting a movable belt pulley in the fourth belt pulley and the fifth belt pulley when the first length adjusting device changes the length of the first belt section.
In the implementation mode, the length of the third belt section is reduced while the length of the first belt section is increased, or the length of the third belt section is increased while the length of the first belt section is reduced, so that the conveying operation of the weighing machine and the material input machine on various materials can be realized in a smaller conveying space, the occupancy rate of the conveying space is saved, and the resource utilization rate of the conveying space is improved.
In a possible implementation manner, the material input machine further comprises a second variable frequency motor, the second variable frequency motor is fixedly connected with a sixth belt pulley, and the sixth belt pulley is matched with the fourth belt section; and the second variable frequency motor is used for changing the rotating speed of the sixth belt pulley so as to change the speed of the third belt section for conveying the material to be detected.
In above-mentioned implementation, through the conveying speed who adjusts the belt of weighing alone and the conveying speed of material input belt for weighing device can satisfy different productivity demands, for example when input people hand is few, when weighing speed is fast, can suitably reduce the conveying speed of material input belt, and improve the conveying speed of belt of weighing, thereby the flexibility is better, more is adapted to the weighing and the conveying demand of reality.
In a possible implementation, the apparatus further comprises a length detector or an electric cabinet; the length detector is used for controlling the first length adjusting device to change the length of the first belt section and controlling the second length adjusting device to change the length of the third belt section when detecting that the length of the first belt section is not matched with the length of the material to be detected; or, the electric cabinet is used for controlling the first length adjusting device to change the length of the first belt segment and the second length adjusting device to change the length of the third belt segment according to the instruction of the user.
In the implementation mode, the adjustment of the conveying length of the weighing machine and the material input machine can be realized in an artificial mode or an automatic mode, so that the application field is wider, and the requirements of more scenes are met.
In a possible implementation manner, a distance between an output end of the third belt segment and an input end of the first belt segment is smaller than a preset threshold, and the preset threshold is smaller than or equal to a maximum gap at which the material to be detected does not fall.
In above-mentioned implementation, through the biggest clearance between the output of control third belt section and the input of first belt section, can guarantee that the in-process material that awaits measuring at adjustment belt length can not drop to the clearance in, guarantee the security of the material that awaits measuring.
In one possible implementation manner, the device further comprises a material output machine, wherein the material output machine comprises a material output belt and a third variable frequency motor; the third variable frequency motor is fixedly connected with a seventh belt pulley, and the seventh belt pulley is matched with the material output belt; a belt section for placing and conveying materials on the material output belt is called a fifth belt section, and the input end of the fifth belt section is close to the output end of the first belt section; and the third variable frequency motor is used for changing the rotating speed of the seventh belt pulley so as to change the speed of the fifth belt segment for conveying the material to be detected.
In the implementation mode, the conveying speeds of the belts on the weighing machine, the material input machine and the material output machine are controlled independently, so that different capacity requirements and packaging requirements can be met, and the adaptability to various application scenes is improved.
In one possible implementation manner, the material input machine, the weighing machine and the material output machine are fixedly connected with the same supporting device; and the supporting device is used for controlling the first belt section, the third belt section and the fifth belt section to be positioned on the same plane.
In above-mentioned implementation, support material input machine, weighing machine and material output machine through setting up strutting arrangement, not only can guarantee the stability that the material that awaits measuring was carried, can also carry out the automatic calibration to the belt position that conveys the material that awaits measuring on each machine, avoid the artificial calibration after a certain machine is collided, improve the flexibility and the efficiency of calibration.
These and other implementations of the invention will be more readily understood from the following description of the embodiments.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of a weighing apparatus according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a weighing machine according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of another weighing machine provided in the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of another weighing machine provided in the embodiment of the present invention;
FIG. 5 is a schematic structural diagram of a first length adjustment device according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a weighing machine according to an embodiment of the present invention;
FIG. 7 is a schematic structural diagram of another weighing apparatus provided in the embodiment of the present invention;
fig. 8 is a schematic structural diagram of another weighing apparatus according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Fig. 1 is a schematic structural diagram of a weighing apparatus according to an embodiment of the present invention, and as shown in fig. 1, the apparatus includes a weighing machine 100, where the weighing machine 100 includes a weighing belt (including a first belt segment 111 and a second belt segment 112), a first belt pulley 121, a second belt pulley 122, a weight detector 130, and a first length adjustment device 140. Wherein, the weighing belt cooperates with first belt pulley 121 and second belt pulley 122, and the weighing belt section that is located first belt pulley 121 and second belt pulley 122 top is called first belt section 111, and first belt section 111 is used for placing the material that awaits measuring, and the weighing belt section that is located first belt pulley 121 and second belt pulley 122 below is called second belt section 112.
In the embodiment of the present invention, the weight detector 130 is located below the first belt segment 111, and is configured to measure the weight of the material to be measured placed on the first belt segment 111. The weight detector 130 is located below the first belt segment 111, may be located in the middle of the first belt segment 111 and the second belt segment 112, or may be located below the first belt segment 111 and the second belt segment 112, which is not limited.
In one embodiment, at least one movable pulley is present in the first pulley 121 and the second pulley 122, and the movable pulley is movable toward or away from the other pulley, so that the first length adjustment device 140 can change the length of the first belt segment by adjusting the movable pulley. For example, as shown in fig. 1, the first belt pulley 121 is a fixed belt pulley, the second belt pulley 122 is a movable belt pulley, and if the length of the first belt segment 111 is smaller than the length of the material to be measured, the first length adjustment device 140 may control the second belt pulley 122 to move away from the first belt pulley 121, so as to increase the length of the first belt segment 111 until the first belt segment 111 can completely contain the material to be measured. Or, if the length of the first belt segment 111 is greater than the length of the material to be measured, the first length adjusting device 140 may control the second belt pulley 122 to move toward the direction close to the first belt pulley 121, so as to shorten the length of the first belt segment 111, and save the occupied space of the weighing device while ensuring that the first belt segment 111 can completely contain the material to be measured.
In the embodiment of the invention, the first length control device is used for controlling the movable belt section to move so as to adaptively adjust the length of the belt for placing the material to be measured, so that the weighing requirements of the weighing device on various materials can be met, the universality of the weighing device is improved, the occupied space of the weighing device can be saved when short materials are weighed, and the utilization rate of space resources is improved.
It should be noted that the above is only an exemplary description, and does not constitute a limitation on the present solution; in specific implementation, the first pulley 121 and the second pulley 122 may be both movable pulleys, or the first pulley 121 may be a movable pulley and the second pulley 122 may be a fixed pulley, which is not limited.
For ease of understanding, the following embodiments of the present invention will be described by taking the first pulley 121 as a fixed pulley and the second pulley 122 as a movable pulley.
In one possible implementation, the weighing belt is elastic, and the first length adjustment device 140 is fixedly connected to the second pulley 122. When the first belt segment 111 needs to be lengthened, the first length adjustment device 140 can directly drive the second belt pulley 122 to move in a direction away from the first belt pulley 121, so that both the first belt segment 111 and the second belt segment 112 are elastically stretched, and the length of the first belt segment 111 is lengthened. Accordingly, when the first belt segment 111 needs to be shortened, the first length adjustment device 140 can directly drive the second belt pulley 122 to move towards the first belt pulley 121, so that the first belt segment 111 and the second belt segment 112 are both elastically compressed, and the length of the first belt segment 111 is shortened.
In this implementation manner, there are various ways to realize that the first length adjustment device 140 moves the second pulley 122, and as an example, as shown in fig. 1, the first length adjustment device 140 includes a first component a1And a second part a2First part a1And a second part a2Is fixedly connected with one end of the first component a1And the other end thereof is fixedly connected with a second pulley 122. In a specific embodiment, the second part a2Can be a fixed-length part that moves the second pulley 122 by sliding along a slideway parallel to the first pulley section 111, or a second part a2The length of the variable-length component, such as a telescopic embedded rod, a spring, a buckle, etc., may be adjusted to drive the second pulley 122 to move, without limitation.
In another possible implementation, the weighing belt has no elasticity, and the total length of the first belt segment 111 and the second belt segment 112 is fixed. In this manner, the first length adjustment device 140 may change the length of the first belt segment 111 by adjusting the length of the second belt segment 112, such as increasing the length of the first belt segment 111 by decreasing the length of the second belt segment 112 or decreasing the length of the first belt segment 111 by increasing the length of the second belt segment 112.
In particular implementations, there are a variety of ways to vary the length of the second belt segment 112, and several possible ways are given below by way of example:
example 1
Fig. 2 is a schematic structural diagram of a weighing machine 100 according to an embodiment of the present invention, as shown in fig. 2, the first pulley 121 and the second pulley 122 may be connected by a length-lengthening device, the first length-adjusting device 140 includes a transmission member 141, and a first end b of the transmission member 1411In contact with the second belt segment 112.
In a specific implementation, the first length adjustment device 140 may drive the transmission member 141 to move, so as to change the first end b of the transmission member 1411The degree of compression on the second belt segment 112, and thus the pressure of the second belt segment 112 on the second pulley 122, will also change accordingly, and there is a pressure difference between the pressure of the second belt segment 112 on the second pulley 122 and the pressure of the length-lengthening device on the second pulley 121, and the pressure difference will drive the second pulley 122 to move toward or away from the first pulley 121. For example, as shown in FIG. 2, when the first length adjustment device 140 drives the transmission member 141 to move away from the first belt segment 111In motion, the first end b1The second belt segment 112 is further compressed, so that the pressure of the second belt segment 112 on the second belt pulley 122 is correspondingly increased, the pressure difference between the pressure of the second belt segment 112 on the second belt pulley 122 and the pressure of the lengthening device on the second belt pulley is positive, and the pressure difference can drive the second belt pulley 122 to move towards the direction close to the first belt pulley 121, so that the length of the second belt segment 112 is increased, and the length of the first belt segment 111 is shortened.
The length-lengthening device may be any one or more of a telescopic nesting rod, a spring, and a buckle, and is not limited.
In example one, since the first pulley and the second pulley are connected by the length lengthening device, when the first length adjustment device changes the degree of compression of the second belt segment, the movable pulley of the first pulley and the second pulley can be moved by compressing the length lengthening device; in addition, in the mode, the first length adjusting device can only compress or relax the second belt section without independently controlling the movable belt pulley, so that the structure is simpler, and the cost is lower.
Example two
Fig. 3 is a schematic structural diagram of another weighing machine 100 according to an embodiment of the present invention, and as shown in fig. 3, the first length adjustment device 140 includes a transmission part 141, and a first end b of the transmission part 1411Is in contact with the second belt segment 112 and the second end b of the transmission member 1412A second pulley 122 is fixedly connected.
In a specific implementation, the first length adjustment device 140 can drive the transmission member 141 to move, on one hand, change the first end b of the transmission member 1411The degree of compression of the second belt segment 112, on the other hand via the second end b of the transmission member 1412The second pulley 122 is driven to move toward or away from the first pulley 121. For example, as shown in fig. 3, when the first length adjustment device 140 drives the transmission member 141 to move away from the first belt segment 111, the first end b1Further compressing the second belt segment 112 while the second end b2The second pulley 122 is driven to move toward the first pulley 121,the length of the second belt segment 112 is made longer and the length of the first belt segment 111 is made shorter.
In the above example, the first length adjusting device is arranged to control the movable belt pulley to move correspondingly while changing the compression degree of the second belt segment, so that the length of the first belt segment can be accurately adjusted in a way of matching the first belt segment and the second belt segment, and the precision is higher.
Examples one and two are examples in which the transmission member 141 is disposed inside the first belt segment 111 and the second belt segment 112, and in a specific implementation, the transmission member 141 may also be disposed outside the first belt segment 111 and the second belt segment 112, for example:
fig. 4 is a schematic structural diagram of another weighing machine 100 according to an embodiment of the present invention, and as shown in fig. 4, a transmission part 141 is disposed outside the first belt segment 111 and the second belt segment 112. In a specific implementation, when the first length adjustment device 140 drives the transmission member 141 to move toward the first pulley 121, the first end b1Further compressing the second belt segment 112 while the second end b2The second belt pulley 122 is driven to move towards the direction close to the first belt pulley 121, so that the length of the second belt segment 112 is increased and the length of the first belt segment 111 is shortened.
It should be noted that the moving direction of the transmission member 141 is not limited in the present invention, and for example, the transmission member may be moved toward or away from the first belt segment 111 as shown in fig. 2 or 3, may be moved toward or away from the first pulley 121 as shown in fig. 4, or may be moved in other directions, which is not limited in the present invention.
Fig. 5 is a schematic structural diagram of a first length adjustment device according to an embodiment of the present invention, and as shown in fig. 5, the first length adjustment device 140 may further include a servo motor 142, a ball screw 143, and a head of the ball screw 143 (e.g., c shown in fig. 5)1) Connected to the servo motor 142, the tail of the ball screw 143 (as indicated by c in FIG. 5)2) The screw-connected transmission part 141, for example, the transmission part 141 can be sleeved on the ball screw 143 through a transmission rod.
In particular embodiments, when it is desired to increase the length of the first belt segment 111In this case, the servo motor 142 can control the ball screw 143 to rotate clockwise, and the clockwise rotation of the ball screw 143 drives the transmission member 141 to move spirally on the ball screw 143 (i.e. to move rightward in fig. 5) because the transmission member 141 is spirally connected with the ball screw 143, so that the first end b of the transmission member 1411The compression of the second belt segment 112 is relieved and the second end b of the transmission member 141 is engaged2The second belt pulley 122 is driven to move away from the first belt pulley 121, so as to reduce the length of the second belt segment 112 and increase the length of the first belt segment 111.
In the embodiment of the invention, by arranging the matching form of the servo motor, the ball screw and the transmission part, the compression of the second belt section and the cooperative control of the movable belt pulley can be directly realized through the servo motor without respectively and independently controlling, so that the operation of a user is simpler and is convenient to realize.
In one possible design, as shown in FIG. 5, the first length adjustment device 140 may also not include a guide mechanism 144, and the guide mechanism 144 may slide in a direction parallel to the first belt segment 111; the transmission member 141 is slidably coupled to the guide mechanism 144. In this manner, the guide mechanism 144 can control the transmission member 141 to slide along a direction parallel to the first belt segment 111 when the transmission member 141 is spirally moved on the ball screw 143. In this kind of design, through setting up guiding mechanism restraint drive disk assembly's moving direction, can guarantee that drive disk assembly drives the second belt pulley and removes along the direction of being close to or keeping away from first belt pulley, so, drive disk assembly's removal can all be turned into the growth length of first belt section, improves the conversion efficiency of removal and belt section length.
In one possible design, as shown in FIG. 5, the first end b of the transmission member 1411May be provided with a driven roller 145 and the second belt segment 112 is brought into contact by cooperation with the driven roller 145. Thus, when the first end b of the transmission member 141 is engaged1When the degree of compression of the second belt segment 112 is increased or decreased, the driven roller 145 can roll along with the change of the length of the second belt segment 112, so that not only the first end b can be lowered1And a second belt segment112, and can also make the belt transmission more labor-saving.
In one possible design, the weighing machine 100 may further include a first variable frequency motor fixedly connected to a third belt pulley, which is engaged with the second belt segment. Wherein, first inverter motor can change the rotational speed of third belt pulley to change the conveying speed of first belt section to the material that awaits measuring. In this kind of design, adjust the conveyer speed of weighing machine to the material that awaits measuring through setting up inverter motor, can satisfy different weighing demand and productivity demand, for example to the material that awaits measuring that packs slowly, can suitably slow down the conveyer speed of weighing machine to the material that awaits measuring, to the material that awaits measuring that packs soon, can suitably accelerate the conveyer speed of weighing machine to the material that awaits measuring.
Fig. 6 is a schematic structural diagram of a weighing machine according to an embodiment of the present invention, and as shown in fig. 6, the weighing machine 100 includes a variable frequency motor 150, a first belt segment 111, a second belt segment 112, a first belt pulley 121, a second belt pulley 122, a weight detector 130, and a first length adjusting device, where the first length adjusting device includes a transmission part 141, a servo motor 142, a ball screw 143, a guide mechanism 144, and a driven roller 145. Wherein, inverter motor 150 can adjust the conveying speed of first belt section 111 to the material to be measured. In addition, in the process of conveying the material by the first belt section 111, the servo motor 142 can drive the ball screw 143 to rotate through operation, and further drive the transmission part 141 in threaded connection with the ball screw 143 to move horizontally. When the transmission member 141 translates leftward, the first end of the transmission member 141 increases the compression degree on the second belt segment 112, and the second end of the transmission member 141 drives the second belt pulley 122 to translate leftward through the driven roller 145, so that the length of the second belt segment 112 is shortened, and the length of the first belt segment 111 is extended; when the transmission member 141 translates rightward, the first end of the transmission member 141 reduces the degree of compression on the second belt segment 112, and the second end of the transmission member 141 drives the second belt pulley 122 to translate rightward through the driven roller 145, so that the length of the second belt segment 112 is extended, and the length of the first belt segment 111 is shortened, thereby adapting to the packaging requirements of different types of materials.
Fig. 7 is a schematic structural diagram of another weighing apparatus according to an embodiment of the present invention, and as shown in fig. 7, the weighing apparatus may further include a material input machine 200, where the material input machine 200 includes a material input belt (including a third belt segment 211 and a fourth belt segment 212), a fourth belt pulley 221, a fifth belt pulley 222, and a second length adjustment device. Wherein, the material input belt can be matched with the fourth belt pulley 221 and the fifth belt pulley 222, the material input belt segment above the fourth belt pulley 221 and the fifth belt pulley 222 is called a third belt segment 211, and the material input belt segment below the fourth belt pulley 221 and the fifth belt pulley 222 is called a fourth belt segment 212; the third belt segment 211 is used for placing and conveying the material to be detected; the output end of the third belt segment 211 is adjacent to the input end of the first belt segment 111.
In one embodiment, there is at least one movable pulley (e.g., the fifth pulley 222) in the fourth pulley 221 and the fifth pulley 222, and the second length adjustment device is configured to reversely change the length of the third belt segment 211 by adjusting the movable pulley in the fourth pulley 221 and the fifth pulley 222 when the first length adjustment device changes the length of the first belt segment 111. For example, when the first length adjustment device increases the length of the first belt segment 111, the second length adjustment device may control the fifth pulley 222 to move closer to the fourth pulley 221, thereby decreasing the length of the third belt segment 211; when the first length adjustment device decreases the length of the first belt segment 111, the second length adjustment device may control the fifth pulley 222 to move away from the fourth pulley 221, thereby increasing the length of the third belt segment 211.
In the embodiment of the invention, the length of the third belt section is reduced while the length of the first belt section is increased, or the length of the third belt section is increased while the length of the first belt section is reduced, so that the conveying operation of the weighing machine and the material input machine on various types of materials can be realized by a smaller conveying space, the occupancy rate of the conveying space is saved, and the resource utilization rate of the conveying space is improved.
As shown in fig. 7, the second length adjusting means includes a transmission part 241, a servo motor 242, a ball screw 243, a guide 244, and a driven roller 245, and the second length adjusting means adjusts the length of the third belt segment 211 may be performed with reference to the first length adjusting means to adjust the length of the first belt segment 111. By carrying independent servo motors for the material input machine 200 and the weighing machine 100, the self-adaptive adjustment design of the belt length on the material input machine 200 and the weighing machine 100 can be independently realized, and different product packaging requirements are met.
The upper diagram of fig. 7 is a working state diagram when the third belt section 211 on the material loading machine 200 is shortened and the first belt section 111 on the weighing machine 100 is extended, and the lower diagram of fig. 7 is a working state diagram when the third belt section 211 on the material loading machine 200 is extended and the first belt section 111 on the weighing machine 100 is shortened.
As an example, when the length of the first belt segment 111 and the length of the third belt segment 211 are correspondingly adjusted, a distance between an output end of the third belt segment 211 and an input end of the first belt segment 111 is smaller than a preset threshold, where the preset threshold is a value smaller than or equal to a maximum gap where the material to be measured does not fall. So, through the maximum clearance between the output of control third belt section and the input of first belt section, can guarantee that the in-process material that awaits measuring at adjustment belt length can not drop the clearance in, guarantee the security of the material that awaits measuring.
In one possible design, the weighing device may further include a length detector, which may be a camera or an infrared device, and the length detector may be disposed above the first belt segment 111 for detecting the length of the material to be measured placed on the first belt segment 111. When it is determined that the length of the material to be measured placed on the first belt segment 111 does not match the length of the first belt segment 111 (e.g., the length of the material to be measured is greater than the length of the first belt segment 111), the length detector may control the first length adjustment device to change (i.e., increase) the length of the first belt segment 111 and control the second length adjustment device to reversely change (i.e., decrease) the length of the third belt segment 211.
Or, as shown in fig. 7, the weighing apparatus may further include an electric cabinet 400, a length adjustment button may be disposed on the electric cabinet 400, and when it is detected that the user presses the length adjustment button on the electric cabinet 400, the electric cabinet 400 may control the first length adjustment device to change the length of the first belt segment 111 and control the second length adjustment device to change the length of the third belt segment 211 according to the instruction of the user. Wherein, the electric cabinet 400 is internally provided with a logic circuit, and after receiving the instruction of a user, the electric cabinet 400 can realize the self-adaptive adjustment design of the length of the belt for conveying materials on the material input machine 200 and the weighing machine 100 through the control of the internal logic circuit, so that the flexibility is better.
In the design, the conveying length of the weighing machine and the material input machine can be adjusted manually or automatically, so that the universality of the application field can be improved, and the requirements of more scenes can be met.
In one possible design, as shown in fig. 7, the material feeding machine 200 may further include a second variable frequency motor 250, wherein the second variable frequency motor 250 is fixedly connected to a sixth pulley, and the sixth pulley is engaged with the fourth belt segment 212. The speed of the third belt segment 211 for conveying the material to be measured can be changed by changing the rotation speed of the sixth belt pulley by the second variable frequency motor 250.
In the above-mentioned design, through the conveying speed who adjusts the belt of weighing alone and the conveying speed of material input belt for weighing device can satisfy different productivity demands, for example when input people hand is few, when weighing speed is fast, can suitably reduce the conveying speed of material input belt, and improve the conveying speed of the belt of weighing, thereby the flexibility is better, more is adapted to the weighing and the conveying demand of reality.
Fig. 8 is a schematic structural diagram of another weighing apparatus provided in an embodiment of the present invention, as shown in fig. 8, the weighing apparatus may further include a material output machine 300, the material output machine 300 includes a material output belt (including a belt segment 311 and a belt segment 312) and a third variable frequency motor 350, the material output belt is matched with the belt pulley 322 through the belt pulley 321, the material output belt segment located above the belt pulley 321 and the belt pulley 322 is the belt segment 311, and the material output belt segment located below the belt pulley 321 and the belt pulley 322 is the belt segment 312; wherein, the third variable frequency motor 350 is fixedly connected with a seventh belt pulley, and the seventh belt pulley is matched with the belt section 312. The belt segment on the material output belt for placing and conveying material is referred to as the fifth belt segment (i.e., belt segment 311), and the input end of the fifth belt segment 311 is close to the output end of the first belt segment 111. The third variable frequency motor 350 is used for changing the rotating speed of the seventh belt pulley, so as to change the speed of the fifth belt segment 311 for conveying the material to be measured.
In the embodiment of the invention, the variable frequency motor 150, the variable frequency motor 250 and the variable frequency motor 350 are respectively loaded on the weighing machine 100, the material input machine 200 and the material output machine 300, so that the independent control of the transmission speed of the belts on the weighing machine, the material input machine and the material output machine can be realized, different capacity requirements and packaging requirements can be met, and the adaptability to various application scenes can be improved.
In one possible design, as shown in fig. 8, the material input machine 200, the weighing machine 100 and the material output machine 300 can be fixedly connected to the same supporting device 500, and the supporting device 500 is used for controlling the first belt segment 111, the third belt segment 211 and the fifth belt segment 311 to be located on the same plane. So, support material input machine, weighing machine and material output machine through setting up strutting arrangement, not only can guarantee the stability that the material that awaits measuring was carried, can also carry out the automatic calibration to the belt position that conveys the material that awaits measuring on each machine, avoid the artificial calibration after a certain machine is collided, improve the flexibility and the efficiency of calibration.
It should be noted that, in the embodiment of the present invention, the material to be detected may be a leaf vegetable, or may be other materials, which is not limited.
According to the above, it can be seen that: in the above embodiment of the present invention, the weighing device includes a weighing machine, the weighing machine includes a weighing belt, a first belt pulley, a second belt pulley, a weight detector, and a first length adjusting device; the weighing belt is matched with the first belt pulley and the second belt pulley, a weighing belt section positioned above the first belt pulley and the second belt pulley is called a first belt section, and a weighing belt section positioned below the first belt pulley and the second belt pulley is called a second belt section; the weight detector is positioned below the first belt segment and used for measuring the weight of the material to be measured placed on the first belt segment; at least one movable pulley is present in the first pulley and the second pulley; the first length adjustment device changes the length of the first belt segment by adjusting the movable pulley. In the embodiment of the invention, the movable belt pulley is controlled by the first length control device to move towards the direction close to or away from the other belt pulley, so that the length of the first belt section for placing the material to be measured on the weighing machine can be adjusted in a self-adaptive manner.
It should be apparent to those skilled in the art that embodiments of the present invention may be provided as a method, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.

Claims (12)

1. A weighing device is characterized by comprising a weighing machine, wherein the weighing machine comprises a weighing belt, a first belt pulley, a second belt pulley, a weight detector and a first length adjusting device; the weighing belt is matched with the first belt pulley and the second belt pulley, a weighing belt section positioned above the first belt pulley and the second belt pulley is called a first belt section, and a weighing belt section positioned below the first belt pulley and the second belt pulley is called a second belt section; the weight detector is positioned below the first belt segment and used for measuring the weight of the material to be measured placed on the first belt segment;
at least one movable pulley is present in the first pulley and the second pulley; the first length adjusting device changes the length of the first belt section by adjusting the movable belt pulley;
the first belt pulley and the second belt pulley are connected through a length-variable device; the first length adjustment device comprises a transmission member, a first end of which is in contact with the second belt segment;
the first length adjusting device drives the transmission part to move, the compression degree of the first end of the transmission part to the second belt section is changed, and the movable belt pulley is controlled to move towards the direction close to or away from the other belt pulley according to the pressure difference between the pressure of the second belt section to the movable belt pulley and the pressure of the length lengthening device to the movable belt pulley.
2. The device of claim 1, wherein the first length adjustment device comprises a transmission member having a first end in contact with the second belt segment and a second end fixedly connected to the movable pulley;
the first length adjusting device drives the transmission part to move, the compression degree of the first end of the transmission part to the second belt section is changed, and the second end of the transmission part drives the movable belt pulley to move towards or away from the other belt pulley.
3. The apparatus of claim 2, wherein said first length adjustment means further comprises a servo motor and a ball screw; the head of the ball screw is connected with the servo motor, and the tail of the ball screw is spirally connected with the transmission part;
the servo motor controls the ball screw to rotate, and drives the transmission part to spirally move on the ball screw.
4. The device of claim 3, wherein the first length adjustment device further comprises a guide mechanism, the transmission member further slidably coupled to the guide mechanism;
the guide mechanism is used for controlling the transmission component to slide along the direction parallel to the first belt segment when the transmission component moves spirally on the ball screw.
5. A device according to claim 1 or 2, wherein the first end is provided with a driven roller, the second belt section being in co-operating contact with the driven roller.
6. The apparatus according to any one of claims 1 to 4, characterized in that the weighing machine further comprises a first variable frequency motor; the first variable frequency motor is fixedly connected with a third belt pulley, and the third belt pulley is matched with the second belt section;
and the first variable frequency motor is used for changing the rotating speed of the third belt pulley so as to change the speed of the first belt section for conveying the material to be detected.
7. The apparatus of claim 6, further comprising a material input machine, the material input machine comprising a material input belt, a fourth pulley, a fifth pulley, and a second length adjustment device; the material input belt is matched with the fourth belt pulley and the fifth belt pulley, a material input belt section positioned above the fourth belt pulley and the fifth belt pulley is called a third belt section, and a weighing belt section positioned below the fourth belt pulley and the fifth belt pulley is called a fourth belt section; the third belt section is used for placing and conveying the material to be detected, and the output end of the third belt section is close to the input end of the first belt section;
at least one movable pulley is present in the fourth pulley and the fifth pulley;
and the second length adjusting device is used for reversely changing the length of the third belt section by adjusting a movable belt pulley in the fourth belt pulley and the fifth belt pulley when the first length adjusting device changes the length of the first belt section.
8. The apparatus of claim 7, wherein the material input machine further comprises a second variable frequency motor, the second variable frequency motor is fixedly connected with a sixth pulley, and the sixth pulley is engaged with the fourth belt segment;
and the second variable frequency motor is used for changing the rotating speed of the sixth belt pulley so as to change the speed of the third belt section for conveying the material to be detected.
9. The apparatus of claim 7, further comprising a length detector or an electric cabinet;
the length detector is used for controlling the first length adjusting device to change the length of the first belt section and controlling the second length adjusting device to change the length of the third belt section when detecting that the length of the first belt section is not matched with the length of the material to be detected;
or, the electric cabinet is used for controlling the first length adjusting device to change the length of the first belt segment and the second length adjusting device to change the length of the third belt segment according to the instruction of the user.
10. The device of claim 7, wherein a distance between an output end of the third belt segment and an input end of the first belt segment is less than a preset threshold, and the preset threshold is less than or equal to a maximum gap through which the material to be measured does not fall.
11. The apparatus of claim 7, further comprising a material output machine, the material output machine comprising a material output belt and a third variable frequency motor; the third variable frequency motor is fixedly connected with a seventh belt pulley, and the seventh belt pulley is matched with the material output belt; a belt section for placing and conveying materials on the material output belt is called a fifth belt section, and the input end of the fifth belt section is close to the output end of the first belt section;
and the third variable frequency motor is used for changing the rotating speed of the seventh belt pulley so as to change the speed of the fifth belt segment for conveying the material to be detected.
12. The device of claim 11, wherein the material input machine, the weighing machine and the material output machine are fixedly connected with the same supporting device;
and the supporting device is used for controlling the first belt section, the third belt section and the fifth belt section to be positioned on the same plane.
CN202010124167.4A 2020-02-27 2020-02-27 Weighing device Active CN111238610B (en)

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