CN211887994U

CN211887994U - Weighing sorting machine

Info

Publication number: CN211887994U
Application number: CN202020315323.0U
Authority: CN
Inventors: 郑炳松; 苏剑锋; 林壮彬
Original assignee: Shantou Hongyu Machinery Co ltd
Current assignee: Shantou Hongyu Machinery Co ltd
Priority date: 2020-03-14
Filing date: 2020-03-14
Publication date: 2020-11-10
Anticipated expiration: 2030-03-14

Abstract

A weighing sorting machine comprises a first rack, a material receiving and conveying mechanism and at least one weighing sorting device; the material receiving and conveying mechanism is arranged on the first rack and provided with at least one discharge end, and each weighing and sorting device corresponds to each discharge end of the material receiving and conveying mechanism respectively; the weighing and sorting device comprises a second rack, a weighing sensor, a weighing platform, a control circuit and a sorting mechanism, wherein the weighing sensor is arranged on the second rack, the weighing platform is arranged on the upper side of the weighing sensor, the weighing platform corresponds to the position of the discharge end corresponding to the material receiving and conveying mechanism, the weighing sensor is electrically connected with the input end corresponding to the control circuit, and the sorting mechanism is electrically connected with the output end corresponding to the control circuit. The utility model discloses the process of weighing of well sorting device of weighing can not receive the interference of factors such as the vibration that connects the material conveying mechanism for the sorting device of weighing can accurately weigh, ensures the degree of accuracy of the result of weighing, thereby realizes accurate letter sorting.

Description

Weighing sorting machine

Technical Field

The utility model relates to a letter sorting equipment, concretely relates to sorting machine of weighing.

Background

Building block components, granular materials, powdery materials and the like are usually packaged into products according to a certain amount, after the products are packaged, whether the products meet specifications is often required to be checked, the products meeting the specifications are sent to the next procedure (for example, a plurality of products are packaged in a concentrated mode), and unqualified products are removed and are packaged again. And (4) checking whether the product meets the specification, usually adopting a weighing method, and judging whether the product meets the specification through weight.

At present, the weighing device is mostly arranged at the lower side of the front section of the conveying belt for weighing products, and the products are weighed and then sorted in the process of moving along the front section of the conveying belt. Since the product is weighed during movement, the weighing result is not accurate enough, and the vibration of the conveyor belt also affects the accuracy of the weighing result. Due to inaccurate weighing, the product is often judged wrongly whether to meet the specification, and the expected sorting effect is difficult to achieve.

Disclosure of Invention

The utility model aims to solve the technical problem that a sorting machine of weighing is provided, this kind of sorting machine of weighing can accurately weigh and sort the product. The technical scheme is as follows:

a weighing sorting machine is characterized by comprising a first rack, a material receiving and conveying mechanism and at least one weighing sorting device; the material receiving and conveying mechanism is arranged on the first rack and provided with at least one discharge end, and each weighing and sorting device corresponds to each discharge end of the material receiving and conveying mechanism respectively; the weighing and sorting device comprises a second rack, a weighing sensor, a weighing platform, a control circuit and a sorting mechanism, wherein the weighing sensor is arranged on the second rack, the weighing platform is arranged on the upper side of the weighing sensor, the weighing platform corresponds to the position of the discharge end corresponding to the material receiving and conveying mechanism, the weighing sensor is electrically connected with the input end corresponding to the control circuit, and the sorting mechanism is electrically connected with the output end corresponding to the control circuit.

In the weighing and sorting machine, the material receiving and conveying mechanism is used for receiving a product to be weighed and conveying the product to a weighing platform of the weighing and sorting device; the weighing sensor detects a weight signal and sends the weight signal to the control circuit, and the control circuit compares the measured weight with a preset weight reference value and outputs a control signal to the sorting mechanism according to a comparison result; the sorting mechanism acts according to the control signal, if the weight detection is qualified, the product on the weighing platform is conveyed to one side, and if the weight detection is unqualified, the product on the weighing platform is conveyed to the other side, so that the sorting of the product is realized. Because weighing sensor and weighing platform install in the second frame, mutually independent with the first frame that connects the material conveying mechanism place, consequently, the product drops the impact force on connecing the material conveying mechanism and connects the produced vibration of material conveying mechanism self operation, can not disturb weighing platform and weighing sensor for the sorting device that weighs can accurately weigh, ensures the degree of accuracy of weighing result, thereby realizes accurate letter sorting.

In the above-mentioned sorting machine of weighing, the sorting device of weighing can be provided with one or more, and is corresponding, connects the material conveying mechanism of material to have one or more discharge end.

In the preferred scheme, above-mentioned sorting machine of weighing is including two sorting device that weigh, connect material conveying mechanism to have about two discharge ends, two sorting device that weigh are in respectively and connect the left and right sides of material conveying mechanism, and two weighing platform of sorting device that weigh are corresponding with connecing two discharge end positions of material conveying mechanism respectively. After the product that needs to weigh enters into and connects on the material conveying mechanism, connect material conveying mechanism to carry the product to two weighing sorting device's weighing platform in turn, when one of them weighing sorting device weighed and sorted the preceding product, connect material conveying mechanism can carry another weighing sorting device with the following product on, can improve work efficiency like this.

In the preferred scheme, the material receiving and conveying mechanism comprises a material receiving platform, a material shifting part and a material shifting part translation mechanism capable of driving the material shifting part to translate left and right in a reciprocating mode, the material receiving platform and the material shifting part translation mechanism are both mounted on a first rack, the material shifting part is located above the material receiving platform, and the left end and/or the right end of the material receiving platform form a discharging end of the material receiving mechanism. Under the condition that the material receiving and conveying mechanism is provided with two discharging ends, the left end and the right end of the material receiving platform respectively form one discharging end, and the material shifting part is positioned between the two discharging ends; a product to be weighed falls in the middle of the material receiving platform, then the material shifting component translation mechanism drives the material shifting component to translate rightwards (or leftwards), and the product is pushed out from the discharge end of the right side (or left side) to the weighing platform of the weighing and sorting device on the right side (or left side); then, the next product to be weighed falls in the middle of the material receiving platform, the material shifting component translation mechanism drives the material shifting component to translate leftwards (or rightwards), and the product is pushed out from the discharge end on the left side (or right side) to the weighing platform of the weighing and sorting device on the left side (or right side); and the process is circulated. Under the condition that the material receiving and conveying mechanism is provided with a discharge end, the discharge end is formed by the left end or the right end of the material receiving platform, and the material shifting part is driven by the material shifting part translation mechanism to be close to or far away from the discharge end; when a product to be weighed falls on the material receiving platform, the product is positioned between the material shifting component and the discharge end, and then the material shifting component translation mechanism drives the material shifting component to translate towards the discharge end, so that the product is pushed out from the discharge end onto a weighing platform of the weighing and sorting device; and then the material shifting part translation mechanism drives the material shifting part to reversely translate and reset.

The upper surface of the material receiving platform is usually at the same height position with the upper surface of the weighing platform, so that the weighing platform is prevented from being impacted when a product enters the weighing platform. Of course, the upper surface of the material receiving platform can be slightly higher than the upper surface of the weighing platform.

In the more preferred scheme, above-mentioned group material part is cuboid group material box, and cuboid group material box has the cavity, is equipped with a plurality of through-holes on the left side wall of cuboid group material box and on the right side wall respectively, through setting up the through-hole, the air current intensity that produces when can reducing cuboid group material box translation to reduce the weighing error that produces because of the harmful effects of air current. The material shifting part can also be a material shifting rod or a material shifting plate.

In a specific scheme, the material shifting component translation mechanism comprises a first driving motor, a first synchronous belt, a first driving belt wheel and a first driven belt wheel, the first driving motor is fixedly installed on a first rack, the first driving belt wheel and the first driven belt wheel are both rotatably installed on the first rack, a power output shaft of the first driving motor is in transmission connection with the first driving belt wheel, the first driving belt wheel and the first driven belt wheel jointly tension the first synchronous belt, the first synchronous belt is provided with a first straight line section located between the first driving belt wheel and the first driven belt wheel, the first straight line section runs from left to right, and the material shifting component is connected with the first straight line section of the first synchronous belt. When the first driving motor rotates, the first driving belt wheel and the first synchronous belt drive the material shifting component to translate left and right, and the material shifting component can translate left or right by controlling the positive rotation and the negative rotation of the power output shaft of the first driving motor. Preferably, the first synchronous belt, the first driving pulley and the first driven pulley are arranged in two groups and are arranged in parallel front and back; the front first driving belt wheel and the rear first driving belt wheel are mounted on a first driving wheel shaft, the front first driven belt wheel and the rear first driven belt wheel are mounted on a first driven wheel shaft, the first driving wheel shaft and the first driven wheel shaft are rotatably mounted on a first rack, a power output shaft of a first driving motor is in transmission connection with the first driving wheel shaft, and the front end and the rear end of the material shifting component are respectively connected with first straight lines of two first synchronous belts. In order to make the material shifting part move more stably, a left-right-direction guide rail can be arranged on the first rack, and a sliding block matched with the guide rail is arranged on the material shifting part.

In addition, the material shifting component translation mechanism can also adopt a chain transmission mechanism, or an air cylinder (such as a rodless air cylinder, the cylinder body of the rodless air cylinder is fixedly arranged on the first rack and has a left-right direction, and the material shifting component is connected with a sliding block of the rodless air cylinder), or a screw/nut mechanism (the screw/nut mechanism comprises a driving motor, a screw, a nut and a guide rail, the screw is rotatably arranged on the first rack and has a left-right direction, the nut is meshed with the screw, the material shifting component is fixedly connected with the nut, the guide rail is fixedly arranged on the first rack and is parallel to the screw, and the material shifting component is provided with a sliding block matched with the guide rail.

The material receiving and conveying mechanism generally comprises a photoelectric eye, and the photoelectric eye is arranged above the material receiving platform. The photoelectric eye is used for detecting whether a product falls on the material receiving platform or not; when the photoelectric eye detects that a product falls onto the material receiving platform, the photoelectric eye outputs a signal to the control device of the material shifting component translation mechanism so as to control the action of the material shifting component translation mechanism and enable the material shifting component to make a corresponding translation action.

In the preferred scheme, the weighing and sorting machine further comprises a feeding mechanism, and the discharge end of the feeding mechanism is positioned above the material receiving and conveying mechanism. Generally, the feeding mechanism includes a feeding conveyer belt, the feeding conveyer belt includes a feeding motor, a driving feeding belt wheel, a driven feeding belt wheel and an annular feeding belt, a power output shaft of the feeding motor is in transmission connection with the driving feeding belt wheel, the driving feeding belt wheel and the driven feeding belt wheel jointly tension the annular feeding belt, and a rear end of the feeding conveyer belt is located above the material receiving and conveying mechanism (a rear end of the feeding conveyer belt constitutes a discharge end of the feeding mechanism). The rear end of the feeding conveying belt can be provided with a feeding hopper, the feeding hopper is provided with a feeding port and a discharging port, the feeding port of the feeding hopper corresponds to the rear end of the feeding conveying belt, and the discharging port of the feeding hopper corresponds to the material receiving and conveying mechanism (for example, the discharging port of the feeding hopper is positioned right above the material receiving platform).

In a preferable scheme, the sorting mechanism comprises a second driving motor, a second synchronous belt, a second driving pulley, a second driven pulley and at least one sorting deflector rod, the second driving motor is fixedly installed on the first rack, the second driving motor is electrically connected with the corresponding output end of the control circuit, the second driving pulley and the second driven pulley can be rotatably installed on the first rack, a power output shaft of the second driving motor is in transmission connection with the second driving pulley, the second driving pulley and the second driven pulley tension the second synchronous belt together, the second synchronous belt is provided with a second straight line section between the second driving pulley and the second driven pulley, and the second straight line section moves forwards and backwards; each sorting driving lever is connected with the second synchronous belt, and the sorting driving lever is located right above the weighing platform when running to the second straight line section. Install second driving motor, second driving pulley and second driven pulley etc. in first frame, make produced vibrations of self operation such as second driving motor, second driving pulley and second driven pulley, can not disturb weighing platform and weighing sensor yet for sorting device weighs accurately, ensures the degree of accuracy of weighing the result. When the second driving motor rotates, the second driving belt wheel and the second synchronous belt drive the sorting deflector rod to move. The positive rotation and the reverse rotation of the power output shaft of the second driving motor are controlled by a control circuit according to a weighing result, for example: when the weight of the product meets the requirement, the control circuit sends a control signal to enable the second driving motor to rotate forwards, so that a sorting deflector rod moves forwards from the rear side of the weighing platform along a second straight line section, and the product on the weighing platform is deflected to the front side of the weighing platform; when the weight of the product is not in accordance with the requirement (overweight or underweight), the control circuit sends a control signal to enable the second driving motor to rotate reversely, so that one sorting deflector rod moves backwards from the front side of the weighing platform along the second straight line section, and the product on the weighing platform is deflected to the rear side of the weighing platform. Preferably, the second synchronous belt, the second driving pulley and the second driven pulley are arranged in two groups and arranged side by side left and right; the left second driving belt wheel and the right second driving belt wheel are mounted on a second driving wheel shaft, the left second driven belt wheel and the right second driven belt wheel are mounted on a second driven wheel shaft, the second driving wheel shaft and the second driven wheel shaft can be rotatably mounted on the first rack, a power output shaft of a second driving motor is in transmission connection with the second driving wheel shaft, and the left end and the right end of the sorting deflector rod are respectively connected with two second synchronous belts.

In other schemes, a chain, a driving sprocket and a driven sprocket can be used to replace the second synchronous belt, the second driving pulley and the second driven pulley.

The sorting mechanism can comprise one or two sorting deflector rods. More preferably, the sorting mechanism comprises two sorting shift levers, the two sorting shift levers are distributed on the second synchronous belt at equal intervals, and the two sorting shift levers are respectively positioned on the front side and the rear side of the weighing platform. When sorting, the second driving motor only needs to drive the second synchronous belt to bypass for half a circle, the product can be dialed down to one side of the product, and the positions of the two sorting shift levers are exchanged and are in a preparation working state, so that the working efficiency is higher and the product is easier to control compared with the condition of only setting one sorting shift lever.

In a more preferable scheme, the sorting deflector rod is provided with a brush, and the brush is positioned on the lower side of the sorting deflector rod and is in contact with the upper surface of the weighing platform when the sorting deflector rod runs to the second straight line section. Due to the arrangement of the hairbrush, the weighing platform can be cleaned during sorting, so that the weighing platform is kept clean, and the weighing accuracy is favorably ensured; and the brush is comparatively soft, can not lead to the platform of weighing to take place the vibration when contacting with the platform of weighing, is favorable to the platform of weighing to keep stable.

In order to realize the classification of overweight products and overweight products so as to reprocess the products, in a more preferable scheme, the sorting mechanism further comprises a unqualified product bidirectional conveying belt, and the unqualified product bidirectional conveying belt is positioned at one side of the weighing platform (for example, at the rear side of the weighing platform) and is positioned below the weighing platform; the unqualified product bidirectional conveying belt comprises a support, a third driving motor, a third driving belt wheel, a third driven belt wheel and a third annular belt, the third driving motor is installed on the support, the third driving belt wheel and the third driven belt wheel can be rotatably installed on the support, the third driving motor is electrically connected with the corresponding output end of the control circuit, a power output shaft of the third driving motor is in transmission connection with the third driving belt wheel, and the third driving belt wheel and the third driven belt wheel tension the third annular belt together. When the product is overweight, the control circuit sends a control signal to enable the third driving motor to rotate forwards, so that the unqualified product falling onto the unqualified product bidirectional conveying belt moves to one side; when the product is short of weight, the control circuit sends a control signal to enable the third driving motor to rotate reversely, and the unqualified product falling onto the unqualified product bidirectional conveying belt moves to the other side.

The utility model discloses well weighing sensor and weighing platform install in the second frame, and the first frame mutually independent that connects the material conveying mechanism place, consequently the sorting device that weighs's weighing process can not receive the interference of factors such as the vibration that connects the material conveying mechanism for the sorting device that weighs can accurately weigh, ensures the degree of accuracy of weighing the result, thereby realizes accurate letter sorting.

Drawings

Fig. 1 is a schematic structural view (perspective view) of a preferred embodiment of the present invention;

FIG. 2 is a perspective view of the weigh sorter of FIG. 1 from another angle;

FIG. 3 is a front view of the weigh sorter of FIG. 1;

figure 4 is a left side view of the weigh sorter of figure 1.

Detailed Description

As shown in fig. 1-4, the weighing and sorting machine comprises a first frame 1, a material receiving and conveying mechanism 2 and at least one weighing and sorting device 3; the material receiving and conveying mechanism 2 is arranged on the first rack 1, the material receiving and conveying mechanism 2 is provided with at least one discharge end 21, and each weighing and sorting device 3 corresponds to each discharge end 21 of the material receiving and conveying mechanism respectively; weighing and sorting device 3 comprises a second frame 31, a weighing sensor 32, a weighing platform 33, a control circuit and a sorting mechanism, wherein the weighing sensor 32 is installed on the second frame 31, the weighing platform 33 is installed on the upper side of the weighing sensor 32, the weighing platform 33 corresponds to the position of the discharge end 21 corresponding to the material receiving and conveying mechanism 2, the weighing sensor 32 is electrically connected with the corresponding input end of the control circuit, and the sorting mechanism is electrically connected with the corresponding output end of the control circuit.

In this embodiment, the sorting machine of weighing is including two sorting device 3 of weighing, connect material conveying mechanism 2 to have about two discharge end 21, two sorting device 3 of weighing are in respectively connecing the left and right sides of material conveying mechanism 2, and two weighing platform 33 of sorting device 3 of weighing are corresponding with two discharge end 21 positions of connecing material conveying mechanism 2 respectively.

Referring to fig. 3, in this embodiment, the material receiving and conveying mechanism 2 includes a material receiving platform 22, a material shifting part 23, and a material shifting part translation mechanism capable of driving the material shifting part 23 to translate back and forth left and right, the material receiving platform 22 and the material shifting part translation mechanism are both mounted on the first frame 1, the material shifting part 23 is located above the material receiving platform 22, and the left end and the right end of the material receiving platform 22 form a discharge end 21 of the material receiving and conveying mechanism 2. The kick-off member 23 is located between the two discharge ends 21.

The upper surface of the material receiving platform 22 and the upper surface of the weighing platform 33 are at the same height position, so that the weighing platform 33 is prevented from being impacted when a product enters the weighing platform 33. In other designs, the upper surface of the material receiving platform 22 may be slightly higher than the upper surface of the weighing platform 33.

In this embodiment, the material poking part 23 is a cuboid material poking box which is provided with a cavity, and a plurality of through holes 24 are respectively arranged on the left side wall and the right side wall of the cuboid material poking box. The material shifting part translation mechanism comprises a first driving motor 25, a first synchronous belt 26, a first driving belt wheel 27 and a first driven belt wheel 28, the first driving motor 25 is fixedly installed on the first rack 1, the first driving belt wheel 27 and the first driven belt wheel 28 can be installed on the first rack 1 in a rotating mode, a power output shaft of the first driving motor 25 is in transmission connection with the first driving belt wheel 27, the first driving belt wheel 27 and the first driven belt wheel 28 tension the first synchronous belt 26 together, the first synchronous belt 26 is provided with a first straight line segment 261 between the first driving belt wheel 27 and the first driven belt wheel 28, the first straight line segment 261 runs in the left-right direction, and the material shifting part 23 is connected with the first straight line segment 261 of the first synchronous belt 26. The first frame 1 is provided with a left-right guide rail 29, and the kick-out member 23 is provided with a slide block 210 which is matched with the guide rail 29. The first synchronous belt 26, the first driving pulley 27 and the first driven pulley 28 may be provided in two sets, and arranged side by side in front and rear; the front and rear first driving pulleys 27 are mounted on a first driving wheel shaft, the front and rear first driven pulleys 28 are mounted on a first driven wheel shaft, the first driving wheel shaft and the first driven wheel shaft are rotatably mounted on the first frame 1, a power output shaft of the first driving motor 25 is in transmission connection with the first driving wheel shaft, and the front end and the rear end of the material shifting component 23 are respectively connected with the first straight line sections 261 of the two first synchronous belts 26. When the first driving motor 25 rotates, the first driving belt wheel 27 and the first synchronous belt 26 drive the material shifting component 23 to translate left and right, and the material shifting component 23 can translate left or right by controlling the positive rotation and the negative rotation of the power output shaft of the first driving motor 25.

The material receiving and conveying mechanism 2 can also comprise a photoelectric eye (not shown in the figure), and the photoelectric eye is arranged above the material receiving platform. The photoelectric eye is used for detecting whether a product falls on the material receiving platform 22; when the photoelectric eye detects that a product falls on the material receiving platform 22, the photoelectric eye outputs a signal to the control device of the material shifting component translation mechanism, so that the movement of the material shifting component translation mechanism is controlled, and the material shifting component makes a corresponding translation movement.

The weighing and sorting machine can also comprise a feeding mechanism (not shown in the figure), and the discharge end of the feeding mechanism is positioned above the material receiving and conveying mechanism. The feeding mechanism comprises a feeding conveying belt, the feeding conveying belt comprises a feeding motor, a driving feeding belt wheel, a driven feeding belt wheel and an annular feeding belt, a power output shaft of the feeding motor is in transmission connection with the driving feeding belt wheel, the driving feeding belt wheel and the driven feeding belt wheel tension the annular feeding belt together, and the rear end of the feeding conveying belt is located above the material receiving and conveying mechanism (the rear end of the feeding conveying belt forms the discharge end of the feeding mechanism). The rear end of the feeding conveying belt can be provided with a feeding hopper, the feeding hopper is provided with a feeding port and a discharging port, the feeding port of the feeding hopper corresponds to the rear end of the feeding conveying belt, and the discharging port of the feeding hopper corresponds to the material receiving and conveying mechanism (for example, the discharging port of the feeding hopper is positioned right above the material receiving platform).

Referring to fig. 4, in the present embodiment, the sorting mechanism includes a second driving motor 34, a second synchronous belt 35, a second driving pulley 36, a second driven pulley 37 and two sorting levers 38, the second driving motor 34 is fixedly mounted on the first frame 1, the second driving motor 34 is electrically connected to a corresponding output end of the control circuit, both the second driving pulley 36 and the second driven pulley 37 are rotatably mounted on the first frame 1, a power output shaft of the second driving motor 34 is in transmission connection with the second driving pulley 36, the second driving pulley 36 and the second driven pulley 37 jointly tension the second synchronous belt 35, the second synchronous belt 35 has a second straight line 351 located between the wheels of the second driving pulley 36 and the second driven pulley 37, and the second straight line 351 runs forward and backward; each sorting lever 38 is connected to the second synchronous belt 35 (two sorting levers 38 are equidistantly distributed on the second synchronous belt 35, and the two sorting levers 38 are respectively located on the front and rear sides of the weighing platform 33), and the sorting lever 38 is located directly above the weighing platform 33 when moving to the second straight line section 351. Two groups of second synchronous belts 35, second driving pulleys 36 and second driven pulleys 37 are arranged in parallel from left to right; the left second driving pulley 36 and the right second driving pulley 36 are mounted on a second driving wheel shaft 39, the left second driven pulley 37 and the right second driven pulley 37 are mounted on a second driven wheel shaft 310, the second driving wheel shaft 39 and the second driven wheel shaft 310 can be rotatably mounted on the first frame 1, a power output shaft of the second driving motor 34 is in transmission connection with the second driving wheel shaft 39, and the left end and the right end of the sorting deflector rod 38 are respectively connected with two second synchronous belts 35. When the second driving motor 34 rotates, the second driving pulley 36 and the second timing belt 35 drive the sorting lever 38 to move.

The sorting deflector 38 is provided with a brush 311, and when the sorting deflector 38 moves to the second straight section 351, the brush 311 is positioned at the lower side of the sorting deflector 38 and contacts with the upper surface of the weighing platform 33. Through setting up brush 311, can clean weighing platform 33 when sorting, make weighing platform 33 keep clean.

Referring to fig. 4, the sorting mechanism further includes a reject bi-directional conveyor belt 312, the reject bi-directional conveyor belt 312 being located on one side of the weighing platform 33 (e.g., on the rear side of the weighing platform 33) and below the weighing platform 33. The unqualified product bidirectional conveying belt 312 can comprise a support, a third driving motor, a third driving pulley, a third driven pulley and a third annular belt, the third driving motor is installed on the support, the third driving pulley and the third driven pulley can be rotatably installed on the support, the third driving motor is electrically connected with the corresponding output end of the control circuit, a power output shaft of the third driving motor is in transmission connection with the third driving pulley, and the third driving pulley and the third driven pulley tension the third annular belt together.

The following briefly describes the working principle of the weighing and sorting machine:

connect material conveying mechanism 2 to be used for receiving the product that needs to weigh, then carry it to weighing platform 33 of weighing sorting device 3 on, specifically be: the product to be weighed sent by the feeding mechanism falls on the middle position of the receiving platform 22, and then the material shifting component translation mechanism drives the material shifting component 23 to translate rightwards (or leftwards), so that the product is pushed out from the discharging end 21 on the right side (or left side) to the weighing platform 33 of the weighing and sorting device 3 on the right side (or left side); then, the next product to be weighed falls to the middle position of the receiving platform 22, the material shifting component translation mechanism drives the material shifting component 23 to translate leftwards (or rightwards), and the product is pushed out from the left (or right) discharging end 21 onto the weighing platform 33 of the left (or right) weighing and sorting device 3; and the process is circulated. The material receiving and conveying mechanism 2 alternately conveys products to the weighing platforms 33 of the two weighing and sorting devices 3, and when one weighing and sorting device 3 weighs and sorts the previous product, the material receiving and conveying mechanism 2 can convey the next product to the other weighing and sorting device 3.

The weighing sensor 32 detects a weight signal and sends the weight signal to the control circuit, and the control circuit compares the measured weight with a preset weight reference value and outputs a control signal to the sorting mechanism according to a comparison result; the sorting mechanism acts according to the control signal, if the weight detection is qualified, the product on the weighing platform 33 is sent to one side (such as the front side), and if the weight detection is unqualified, the product on the weighing platform 33 is sent to the other side (such as the rear side), so that the sorting of the product is realized. The forward rotation and reverse rotation of the power output shaft of the second drive motor 34 are controlled by a control circuit according to the weighing result, for example: when the weight of the product meets the requirement, the control circuit sends a control signal to enable the second driving motor 34 to rotate forwards, enable a sorting deflector rod 38 to move forwards from the rear side of the weighing platform 33 along the second straight line section 351, and deflect the product on the weighing platform 33 to the front side of the weighing platform 33; when the weight of the product is not satisfactory (overweight or underweighed), the control circuit sends a control signal to enable the second driving motor 34 to rotate reversely, so that a sorting deflector rod 38 moves backwards from the front side of the weighing platform 33 along the second straight line section 351, and the product on the weighing platform 33 is deflected to the rear side of the weighing platform 33. When sorting is carried out, the second driving motor 34 only needs to drive the second synchronous belt 35 to rotate for a half cycle, so that the products can be shifted to the corresponding side, and meanwhile, the positions of the two sorting shift levers 38 are exchanged and are in a preparation working state.

The principle of classifying overweight and underweight products is: when the product is overweight, the control circuit sends a control signal to enable the third driving motor to rotate forwards, so that the unqualified product falling onto the unqualified product bidirectional conveying belt 312 moves to one side; when the product is short of weight, the control circuit sends a control signal to enable the third driving motor to rotate reversely, so that the unqualified product falling onto the unqualified product bidirectional conveying belt 312 moves to the other side.

In other embodiments, the weighing and sorting machine can also be provided with only one weighing and sorting device, and correspondingly, the material receiving and conveying mechanism is provided with a discharge end. Under the condition that the material receiving and conveying mechanism is provided with a discharge end, the discharge end is formed by the left end or the right end of the material receiving platform, and the material shifting part is driven by the material shifting part translation mechanism to be close to or far away from the discharge end; when a product to be weighed falls on the material receiving platform, the product is positioned between the material shifting component and the discharge end, and then the material shifting component translation mechanism drives the material shifting component to translate towards the discharge end, so that the product is pushed out from the discharge end onto a weighing platform of the weighing and sorting device; and then the material shifting part translation mechanism drives the material shifting part to reversely translate and reset.

In other embodiments, the material shifting component translation mechanism may also adopt a chain transmission mechanism, or an air cylinder (e.g., a rodless air cylinder, a cylinder body of the rodless air cylinder is fixedly mounted on the first frame and has a left-right direction, and the material shifting component is connected with a slider of the rodless air cylinder), or a screw/nut mechanism (the screw/nut mechanism includes a driving motor, a screw, a nut, and a guide rail, the screw is rotatably mounted on the first frame and has a left-right direction, the nut is meshed with the screw, the material shifting component is fixedly connected with the nut, the guide rail is fixedly mounted on the first frame and is parallel to the screw, and the material shifting component is provided with a slider matched with the guide rail.

In other embodiments, a chain, a drive sprocket, and a driven sprocket may be used instead of the second timing belt, the second drive pulley, and the second driven pulley.

Claims

1. A weighing sorting machine is characterized by comprising a first rack, a material receiving and conveying mechanism and at least one weighing sorting device; the material receiving and conveying mechanism is arranged on the first rack and provided with at least one discharge end, and each weighing and sorting device corresponds to each discharge end of the material receiving and conveying mechanism respectively; the weighing and sorting device comprises a second rack, a weighing sensor, a weighing platform, a control circuit and a sorting mechanism, wherein the weighing sensor is arranged on the second rack, the weighing platform is arranged on the upper side of the weighing sensor, the weighing platform corresponds to the position of the discharge end corresponding to the material receiving and conveying mechanism, the weighing sensor is electrically connected with the input end corresponding to the control circuit, and the sorting mechanism is electrically connected with the output end corresponding to the control circuit.

2. The weighing and sorting machine of claim 1, wherein: the sorting machine of weighing including two sorting device of weighing, connect material conveying mechanism to have about two discharge ends, two sorting device of weighing are in respectively connecing the left and right sides of material conveying mechanism, and two sorting device of weighing's platform of weighing is corresponding with two discharge end positions of connecing material conveying mechanism respectively.

3. The weighing and sorting machine of claim 1 or 2, wherein: connect material defeated material mechanism including connect the material platform, dial the material part and can drive to dial the material part and control reciprocating translation dial the material part translation mechanism, connect the material platform and dial the material part translation mechanism and all install in first frame, dial the material part and be in and connect the material platform top, connect the left end and/or the right-hand member of material platform to constitute the discharge end that connects the material defeated material mechanism.

4. The weighing and sorting machine of claim 3, wherein: the upper surface of the material receiving platform and the upper surface of the weighing platform are in the same height position, or the upper surface of the material receiving platform is higher than the upper surface of the weighing platform.

5. The weighing and sorting machine of claim 3, wherein: the material poking component is a cuboid material poking box which is provided with a cavity, and a plurality of through holes are respectively formed in the left side wall and the right side wall of the cuboid material poking box.

6. The weighing and sorting machine of claim 3, wherein: the material shifting part translation mechanism comprises a first driving motor, a first synchronous belt, a first driving belt wheel and a first driven belt wheel, the first driving motor is fixedly installed on a first rack, the first driving belt wheel and the first driven belt wheel can be rotatably installed on the first rack, a power output shaft of the first driving motor is in transmission connection with the first driving belt wheel, the first driving belt wheel and the first driven belt wheel tension the first synchronous belt together, the first synchronous belt is provided with a first straight line section located between the first driving belt wheel and the first driven belt wheel, the first straight line section runs in the left-right direction, and the material shifting part is connected with the first straight line section of the first synchronous belt.

7. The weighing and sorting machine of claim 1 or 2, wherein: the material receiving and conveying mechanism also comprises a photoelectric eye, and the photoelectric eye is arranged above the material receiving platform;

the weighing sorting machine also comprises a feeding mechanism, and the discharge end of the feeding mechanism is positioned above the material receiving and conveying mechanism; the feeding mechanism comprises a feeding conveying belt, the feeding conveying belt comprises a feeding motor, a driving feeding belt wheel, a driven feeding belt wheel and an annular feeding belt, a power output shaft of the feeding motor is in transmission connection with the driving feeding belt wheel, the driving feeding belt wheel and the driven feeding belt wheel jointly tension the annular feeding belt, and the rear end of the feeding conveying belt forms a discharging end of the feeding mechanism.

8. The weighing and sorting machine of claim 1 or 2, wherein: the sorting mechanism comprises a second driving motor, a second synchronous belt, a second driving belt wheel, a second driven belt wheel and at least one sorting driving lever, the second driving motor is fixedly installed on the first rack, the second driving motor is electrically connected with the corresponding output end of the control circuit, the second driving belt wheel and the second driven belt wheel can be rotatably installed on the first rack, a power output shaft of the second driving motor is in transmission connection with the second driving belt wheel, the second driving belt wheel and the second driven belt wheel jointly tension the second synchronous belt, the second synchronous belt is provided with a second linear section between the second driving belt wheel and the second driven belt wheel, and the second linear section moves forwards and backwards; each sorting driving lever is connected with the second synchronous belt, and the sorting driving lever is located right above the weighing platform when running to the second straight line section.

9. The weighing sorter of claim 8, wherein: the sorting mechanism comprises two sorting deflector rods which are distributed on the second synchronous belt at equal intervals, and the two sorting deflector rods are respectively positioned on the front side and the rear side of the weighing platform;

the sorting deflector rod is provided with a brush, and the brush is positioned on the lower side of the sorting deflector rod and is in contact with the upper surface of the weighing platform when the sorting deflector rod runs to the second straight line section.

10. The weighing sorter of claim 8, wherein: the sorting mechanism further comprises an unqualified product bidirectional conveying belt, and the unqualified product bidirectional conveying belt is positioned on one side of the weighing platform and below the weighing platform; the unqualified product bidirectional conveying belt comprises a support, a third driving motor, a third driving belt wheel, a third driven belt wheel and a third annular belt, the third driving motor is installed on the support, the third driving belt wheel and the third driven belt wheel can be rotatably installed on the support, the third driving motor is electrically connected with the corresponding output end of the control circuit, a power output shaft of the third driving motor is in transmission connection with the third driving belt wheel, and the third driving belt wheel and the third driven belt wheel tension the third annular belt together.