CN213568171U

CN213568171U - Accurate weighing and blanking machine with double-layer belt material control function

Info

Publication number: CN213568171U
Application number: CN202022046591.XU
Authority: CN
Inventors: 殷秋强
Original assignee: Fujian Province Quanzhou City Jiali Machinery Technology Co ltd
Current assignee: Fujian Province Quanzhou City Jiali Machinery Technology Co ltd
Priority date: 2020-09-17
Filing date: 2020-09-17
Publication date: 2021-06-29
Anticipated expiration: 2030-09-17

Abstract

The utility model discloses a precise weighing blanking machine with double-layer belt material control, which comprises a box body, and a feeding hopper, a vibrating blanking device, a weighing device and a discharging hopper which are arranged on the box body and are matched with each other in sequence, wherein the vibrating blanking device and the weighing device are both provided with a feeding end and a discharging end; the automatic feeding device is characterized by further comprising a first belt conveyor with one-way conveying function and a second belt conveyor which is installed in the box body and can switch conveying in two directions, one end of the first belt conveyor is connected to the lower portion of the discharging end of the feeding hopper, the other end of the first belt conveyor is located above the second belt conveyor and connected with the second belt conveyor, the first end of the second belt conveyor is connected with the feeding end of the vibration discharging device in an up-and-down mode, and the second end of the second belt conveyor is connected with the feeding end of the weighing device in an up-and-down mode. The utility model discloses a blanking machine is weighed to the accuracy, and unloading control is more accurate, weighs more accurately, and the error is minimum, reduces cost of enterprise effectively and drops into, increases the performance of enterprises.

Description

Accurate weighing and blanking machine with double-layer belt material control function

Technical Field

The utility model relates to an accurate weighing equipment field of powder, granule, cubic, concretely relates to is an accurate blanking machine of weighing of double-deck belt accuse material.

Background

The material separating machines on the market are many, and are mostly used for subpackaging materials such as powder, granules, blocks and the like, for example, flour, white sugar, tea, ice blocks, jelly and the like. However, the existing material separating machine on the market is complex in structure, cannot accurately discharge materials, is difficult to unify gram weights of weighed materials, affects product packaging, causes uneven packaging size, directly affects product appearance, and increases cost input (for example, white sugar is used, each package has an error of 3-5 g, several jin of white sugar is input in one day, and several jin of white sugar is input in one month).

Accordingly, the present inventors have made extensive studies to solve the above problems and have made the present invention.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a blanking machine is weighed to accurate of double-deck belt accuse material.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

an accurate weighing blanking machine with double-layer belt material control comprises a box body, and a feeding hopper, a vibrating blanking device, a weighing device and a discharging hopper which are arranged on the box body and are sequentially matched, wherein the feeding hopper is arranged on the box body, the vibrating blanking device and the weighing device are both arranged in the box body, the discharging hopper is arranged outside the box body, and the vibrating blanking device and the weighing device are both provided with a feeding end and a discharging end; the automatic feeding device is characterized by further comprising a first belt conveyor with one-way conveying function and a second belt conveyor which is installed in the box body and can switch conveying in two directions, one end of the first belt conveyor is connected to the lower portion of the discharging end of the feeding hopper, the other end of the first belt conveyor is located above the second belt conveyor and connected with the second belt conveyor, the first end of the second belt conveyor is connected with the feeding end of the vibration discharging device in an up-and-down mode, and the second end of the second belt conveyor is connected with the feeding end of the weighing device in an up-and-down mode.

The first belt conveyor and the second belt conveyor are arranged in the box body side by side up and down, the discharge end of the first belt conveyor is positioned above the middle part of the second belt conveyor, an adjusting plate which can translate up and down and is used for scraping materials falling on the first belt conveyor is installed in the box body, and the adjusting plate is close to the feeding hopper, is positioned right above the first belt conveyor and is arranged obliquely downwards; the vibrating blanking device and the weighing device are arranged side by side and are located under the second belt conveyor, the feeding end of the vibrating blanking device is located under one end of the second belt conveyor, the feeding end of the weighing device is located under the other end of the second belt conveyor, the discharging end of the vibrating blanking device is located in the upper area of the feeding end of the weighing device, and the discharging hopper is located under the discharging end of the weighing device.

A first material guide plate which is arranged right in front of the discharge end of the first belt conveyor and guides materials to the middle of the second belt conveyor in an inclined manner is arranged in the box body; a second material guide plate is arranged in the box body, the upper part of the second material guide plate is connected with the feeding hopper, the lower part of the second material guide plate is connected with the discharge end of the first belt conveyor and inclines downwards, the upper part of the adjusting plate is close to the feeding hopper, and the lower part of the adjusting plate is close to the feeding hopper and is arranged at the blanking position of the first belt conveyor in an inclined and downward mode; the second material guide plate and the adjusting plate are arranged in an aligned mode, and the distance between the second material guide plate and the lower end portion of the adjusting plate is smaller than the distance between the second material guide plate and the upper end portion of the adjusting plate; the second material guide plate is arranged above the first belt conveyor, the upper end of the second material guide plate is connected with the feeding hopper, and the lower end of the second material guide plate is connected with the feeding end of the first belt conveyor.

The first belt conveyor comprises a first stepping motor, a first main roller, a first auxiliary roller and a first conveying belt wound on the first main roller and the first auxiliary roller for transmission, the vibration blanking device is positioned right below the first conveying belt, the first stepping motor is fixedly arranged on the box body and positioned between the first conveying belt and the vibration blanking device, and an output shaft of the first stepping motor is in transmission connection with the first main roller through a first chain wheel transmission assembly; two first material blocking pieces which are arranged in an aligned mode along the feeding direction of the first belt conveyor are further installed in the box body, the two first material blocking pieces are located on the first conveying belt, the lower end portion of the adjusting plate is located between the two first material blocking pieces, and the lower end portions of the two first material blocking pieces are bent in opposite directions and are closely attached to the first conveying belt; one end parts of the two first material blocking pieces are fixedly connected with corresponding side walls of the second material guiding plate respectively, the other ends of the two first material blocking pieces are bent oppositely to form a material outlet for gathering materials, and the material outlet extends out of the first conveying belt.

The second belt conveyor comprises a second stepping motor, a second main roller, a second auxiliary roller and a second conveying belt wound on a second main roller and the second auxiliary roller for transmission, the vibration blanking device is positioned right below the second conveying belt, the second stepping motor is fixedly arranged on the box body and is positioned right above the second conveying belt, and an output shaft of the second stepping motor is in transmission connection with the second main roller through a second chain wheel transmission assembly; two second blocking materials which are arranged in an aligned mode along the feeding direction of the second belt conveyor are installed in the box body, two ends of the two second blocking materials are flush with two ends of the second belt conveyor, the two second blocking materials are located on the second conveying belt, and the lower end portions of the two second blocking materials are bent in opposite directions and are closely attached to the second conveying belt; and two ends of the two second material blocking pieces are oppositely bent to form a material gathering port.

A first sensor for detecting the material level in the feeding hopper is arranged in the box body, the first sensor is provided with a sensing end, the sensing end of the first sensor faces the feeding hopper, a second sensor for detecting the material level in the vibration blanking device is arranged in the box body, the second sensor is positioned between the second conveying belt and the vibration blanking device, the second sensor is provided with a sensing end, and the sensing end of the second sensor faces the vibration blanking device; the vibration blanking device is characterized in that a controller is installed in the box body and located below the vibration blanking device, a touch screen is installed on the box body and connected with the controller in a two-way mode, the first inductor and the second inductor are respectively and electrically connected with corresponding output ends of the controller, the vibration blanking device is electrically connected with the corresponding output ends of the controller, and the weighing device is connected with the controller in a two-way mode.

The utility model discloses a weighing device, including box, regulation board, observation hole, regulation board, connecting piece, nut and screw, the observation hole has been seted up to the pan feeding end position that corresponds to first band conveyer's discharge end to weighing device on the box, rotate on the observation hole and install transparent dust guard, set up the bar hole that supplies the regulation board to translate from top to bottom on the regulation board, fixedly connected with downward sloping in the box and with the connection piece that the regulation board pasted, the connection piece is in directly over first band conveyer, the lower tip of connection piece is provided with the through-hole, the regulation board passes through the nut and passes the fix with screw in bar.

Install two first tensioning assembly that are in respectively on first pair roller both ends on the box, first tensioning assembly includes fixed block, first screw rod and second screw rod, first screw rod with set up side by side on the second screw rod, and a tip with box fixed connection, have the confession on the fixed block the arc notch that first pair roller tip was absorbed in, first screw rod and second screw rod are in respectively arc notch upside and downside, first screw rod with the other end of second screw rod all passes the fixed block, first screw rod with the second screw rod passes equal spiral shell is equipped with the nut in the fixed block part.

Two second tensioning assemblies respectively positioned at two ends of the second auxiliary roller are mounted on the box body, the second tensioning assemblies are the same as the first tensioning assemblies in structure, and the second tensioning assemblies are positioned under the first tensioning assemblies.

The utility model has the advantages that:

during operation, the materials are discharged onto the first belt conveyor from the feeding hopper, along with the further unidirectional feeding operation of the first belt conveyor, the materials directly fall onto the middle part of the second belt conveyor, and the materials conveyed by the first belt conveyor fall evenly and are scattered on the second belt conveyor. Through the equidirectional pay-off action of second band conveyer and first band conveyer, a large amount of materials are directly unloaded to weighing device uniformly on the second band conveyer (set up the big numerical value of weighing value in advance promptly on the weighing device), and when reacing and predetermineeing the big numerical value of weighing value, the reverse work of second band conveyer is a small section, prevents that the material from sliding into weighing device. And simultaneously, a part of the fed material of the second belt conveyor falls into the feeding end of the lower vibrating blanking device. Meanwhile, the vibration blanking device starts to vibrate, and micro material supplement is carried out on the weighing device through micro discharging during vibration of the vibration blanking device (namely, the micro value is supplemented to a preset weighing value large value). When the second sensor on the feeding end of the vibrating blanking device detects that the material reaches the blanking position, the first belt conveyor and the second belt conveyor stop working. When the weighing value of the weighing device reaches the required accurate scale value (namely the required accurate scale value is the preset weighing value large value and the supplement micro value), the vibration discharging device is controlled to stop working, the materials are automatically discharged, and the materials are discharged from the discharging hopper channel to the next procedure or directly discharged and packaged. Therefore, the accurate weighing blanking machine of the double-layer belt material control of the utility model has more accurate blanking control, more accurate weighing, smaller error and higher weighing accuracy, and effectively avoids the phenomenon of large weighing error; the investment of enterprise cost can be directly and effectively reduced, and the enterprise benefit is increased.

Drawings

For ease of illustration, the present invention is described in detail by the following detailed description and accompanying drawings.

Fig. 1 is a schematic perspective view of the present invention.

Fig. 2 is a schematic front view of the present invention (the box plate and the like of the box body are omitted in the figure).

Fig. 3 is a schematic view of another perspective structure of the present invention (the box board of the box body is omitted in the figure).

Fig. 4 is a rear view of the present invention.

Fig. 5 is a side view of the present invention.

In the figure:

a box body-1; a first material guide plate-11; a second material guide plate-12; a first material flap-13; a second dam-14; feeding into a hopper-2; a vibration blanking device-3; a weighing device-4; a discharge hopper-5; an adjusting plate-6; a first stepper motor-71; a first main drum-72; a first pair of drums-73; a first conveyor belt-74; a second stepper motor-81; a second main roller-82; a second pair of drums-83; a second conveyor belt-84; a second inductor-9; viewing port-100; fixing block-01; a first screw-02; a second screw-03.

Detailed Description

In order to further explain the technical solution of the present invention, the present invention is explained in detail by the following embodiments.

For convenience of description, the left side of the case 1 in fig. 2 is taken as the front, and the right side of the case 1 is taken as the rear.

As shown in fig. 1-5, the utility model discloses a precision of double-deck belt accuse material weighs blanking machine, including box 1, go into hopper 2, vibrations unloader 3, weighing device 4 and supply out the hopper 5 of expecting outside box 1, it installs to go into hopper 2 on box 1, vibrations unloader 3 with weighing device 4 all installs in the box 1, vibrations unloader 3 with weighing device 4 all has pan feeding end and discharge end. The automatic material feeding device is characterized by further comprising a first belt conveyor and a second belt conveyor, wherein the first belt conveyor and the second belt conveyor are installed in the box body 1 and are arranged side by side from top to bottom, the discharge end of the first belt conveyor is located above the middle of the second belt conveyor, the feeding hopper 2 is located right above the feeding end of the first belt conveyor, an adjusting plate 6 which can translate up and down and is used for leveling materials falling on the first belt conveyor is installed in the box body 1, the adjusting plate 6 is located right above the middle of the first belt conveyor, and the adjusting plate 6 is arranged downwards in an inclined manner from front to back; the vibration blanking device 3 and the weighing device 4 are located below the second belt conveyor, the weighing device 4 is located on the front side of the vibration blanking device 3, the feeding end of the vibration blanking device 3 is located under the rear end portion of the second belt conveyor and receives the discharged material of the rear end portion of the second belt conveyor, the feeding end of the weighing device 4 is located under the front end portion of the second belt conveyor and receives the discharged material of the front end portion of the second belt conveyor, the discharging end of the vibration blanking device 3 is located in the upper area of the feeding end of the weighing device 4, and the discharging hopper 5 is fixedly installed on the box body 1 and located under the discharging end of the weighing device 4. For better explanation the utility model discloses an operating process to the forward pay-off direction of first band conveyer and second band conveyer pay-off is the forward pay-off, and is reverse with the backward pay-off direction of second band conveyer pay-off. When the automatic feeding device works, the first belt conveyor feeds forwards in a single direction (namely forward feeding), the second belt conveyor feeds forwards in two directions, firstly, the materials are directly fed forwards (namely forward feeding) to the weighing device 4, and the weighing device 4 directly weighs (namely, a preset numerical value with a large weighing value is obtained). And secondly, feeding backwards (namely reverse feeding) to directly convey the residual materials of the second belt conveyor into the vibrating blanking device 3, and vibrating the vibrating blanking device 3 to add a small amount of materials (namely supplement of micro-quantity values) to the weighing device 4. Finally, the weighing value of the weighing device 4 reaches the required accurate scale value (namely, the required accurate scale value is the preset weighing value large value and the supplement micro value) through the control of different blanking amounts in the unit time of the two times, so that the phenomenon that the weighing cannot be accurate is effectively avoided. The unloading control is more accurate, weighs more accurately, and the error is littleer, and it is higher to weigh the degree of accuracy.

It should be noted that: the utility model discloses in, vibrations unloader 3, weighing device 4 and play hopper 5 and current invention patent, the vibrations unloader, weighing device and play hopper structure in the precision blanking racking machine that is suitable for card material, the strip of bridge, cubic material that patent number is CN202010525464.X discloses are the same to adopt the same position relation and the relation of connection with this invention to install and arrange, so just no longer repeated here.

The feeding hopper 2 in the utility model can also adopt the prior invention patent, the first conical hopper, the second conical hopper and the material turning device in the precision blanking racking machine which is suitable for the strip-shaped and block-shaped materials of the blocking and bridging and is disclosed by the patent number CN202010525464.X to be combined to feed the first belt conveyer.

In this embodiment, a first material guide plate 11 is installed in the box body 1; the first material guide plate 11 is located right in front of the discharge end of the first belt conveyor and guides materials obliquely to the middle of the second belt conveyor, and the main functions of the first material guide plate 11 are as follows: stopping the scattered discharging of the first belt conveyor, and simultaneously uniformly conducting the materials to the middle part of the second belt conveyor. A second material guide plate 12 is arranged in the box body 1, the upper part of the second material guide plate is connected with the feeding hopper 2, the lower part of the second material guide plate is connected with the discharging end of the first belt conveyor and inclines forwards and downwards, the upper part of the adjusting plate 6 is close to the feeding hopper 2, and the lower part of the adjusting plate is close to the feeding hopper 2 at the blanking position of the first belt conveyor and inclines backwards and downwards; such that the second guide plate 12 is arranged in alignment with the adjusting plate 6, the distance between the second guide plate 12 and the lower end of the adjusting plate 6 is smaller than the distance between the second guide plate 12 and the upper end of the adjusting plate 6; the second material guiding plate 12 is located above the first belt conveyor, where the second material guiding plate 12 is mainly used to connect the upper end of the second material guiding plate to the discharging end of the feeding hopper 2, and the lower end of the second material guiding plate to the feeding end of the first belt conveyor, so as to accelerate the uniform falling of the materials.

In this embodiment, the first belt conveyor includes a first stepping motor 71, a first main roller 72, a first auxiliary roller 73 behind the first main roller 72, and a first conveyor belt 74 wound around the first main roller 72 and the first auxiliary roller 73 for transmission, the vibration blanking device 3 is located right below the first conveyor belt 74, the first stepping motor 71 is fixedly mounted on the box 1 and located between the first conveyor belt 74 and the vibration blanking device 3, and an output shaft of the first stepping motor 71 is in transmission connection with the first main roller 72 through a first sprocket transmission assembly (i.e., the first sprocket transmission assembly adopts a gear and a chain which are conventional in the art for transmission); therefore, the transmission structure between the first stepping motor 71 and the first main roller 72 is simple, the accurate control is easy, the friction among all parts can be reduced, the electric energy loss is reduced, and the energy is saved. Two first material blocking pieces 13 which are arranged in an aligned mode along the feeding direction of the first belt conveyor are further installed in the box body 1, the two first material blocking pieces 13 are located on the first conveying belt 74, and the lower end portion of the adjusting plate 6 extends into the space between the two first material blocking pieces 13 and is located in the middle of the first material blocking pieces 13; the lower end parts of the two first material blocking pieces 13 are oppositely bent and are closely attached to the first conveying belt 74; one end parts of the two first material blocking pieces 13 are respectively fixedly connected with corresponding side walls of the second material guiding plate 12, and the other ends of the two first material blocking pieces 13 are oppositely bent to form a material outlet for gathering materials, and the material outlet extends out of the first conveying belt 74. With the above structure, the first material blocking piece 13 has two main functions, one is to avoid the material leakage from the gap between the left and right edges of the first conveyor belt 74 and the box body 1, and to avoid the influence caused by the symmetry. Secondly, the material on the first conveyer belt 74 is gathered when being guided and discharged, and the uniform and stable discharge is ensured.

In this embodiment, the second belt conveyor includes a second stepping motor 81, a second main roller 82, a second auxiliary roller 83 behind the second main roller 82, and a second conveying belt 84 wound around the second main roller and the second auxiliary roller 83 for transmission, the vibrating blanking device 3 is located under the second conveying belt 84, the second stepping motor 81 is fixedly mounted on the box 1 and located over the second conveying belt 84, and an output shaft of the second stepping motor 81 is in transmission connection with the second main roller 82 through a second sprocket transmission assembly (i.e., the second sprocket transmission assembly adopts a gear and a chain which are conventional in the art for transmission); therefore, the transmission structure between the second stepping motor 81 and the second main roller 82 is simple, the accurate control is easy, and the friction between the components can be reduced, resulting in the electric energy loss. Two second blocking materials 14 which are arranged in an aligned mode along the feeding direction of the second belt conveyor are installed in the box body 1, two ends of the two second blocking materials 14 are flush with two ends of the second belt conveyor, the two second blocking materials 14 are located on the second conveying belt 84, and the lower end portions of the two second blocking materials 14 are bent oppositely and are closely attached to the second conveying belt 84; two ends of the two second material blocking pieces 14 are oppositely bent to form a material gathering port. With the above structure, the second baffle 14 has two main functions, one is to prevent the material from leaking from the gap between the left and right edges of the second conveyor belt 84 and the box 1, and to avoid the influence caused by the symmetry. Secondly, the material on the second conveyer belt 84 is guided and gathered when the material is discharged from both ends, so that the uniform and stable discharge is ensured, and the probability of influence on weighing is avoided.

In this embodiment, install first inductor (not given in the figure) in the box 1, first inductor has the response end, the response end orientation of first inductor go into in the hopper 2, first inductor here is used for detecting the material level of going into hopper 2 interior material level (be used for the response whether have the material in going into hopper 2), need not to go into hopper 2 through artifical observation and has the material, can reduce the cost of labor, increases the performance of enterprises. Install second inductor 9 in the box 1, second inductor 9 is in second conveyer belt 84 with between the vibrations unloader 3, second inductor 9 has the response end, the response end orientation of second inductor 9 vibrations unloader 3 (vibrations unloader 3 has spiral vibration dish promptly and is in spiral vibration dish below and drive the vibrating motor of spiral vibration dish vibration), and is concrete, and the response end orientation of second inductor 9 is gone up the vibration dish towards vibrations unloader 3, and second inductor 9 here is used for detecting the material level in vibrations unloader 3 (be used for responding to vibrations unloader 3 promptly and have the vibration dish whether have the material), guarantees to cross vibration ejection of compact symmetry and carries out the feed supplement, reaches and weighs accurate effect and purpose. Need not through artifical observation, labour saving and time saving, labour saving and labor saving cost. The vibration blanking device comprises a box body 1, a controller (not shown) is installed in the box body 1, the controller is an existing PLC (programmable logic controller) in the field and is located below a vibration blanking device 3, a touch screen (not shown) is installed on the box body 1, the touch screen is obtained by existing direct purchase, the touch screen is in two-way connection with the controller, the first inductor and the second inductor 9 are respectively and electrically connected with corresponding output ends of the controller, the vibration blanking device 3 is electrically connected with the corresponding output ends of the controller, and the weighing device 4 is in two-way connection with the controller. In the foregoing, the controller and the touch screen can be installed on any side wall of the box body 1, and can be conveniently controlled to be installed according to actual needs. By adopting the structure, materials are sensed by the first sensor and the second sensor 9, the controller is changed and controlled through touch screen display and input parameters, the controller receives detection electric signals of the first sensor and the second sensor 9, the detection electric signals are fed back to the touch screen display after being processed, and the first stepping motor 71, the vibration discharging device 3 and the weighing device 4 are controlled to work correspondingly. Wherein, the controller controls the first stepping motor 71, the vibrating blanking device 3 and the weighing device 4 to work in a conventional mode in the field. Modifying the controller control via touch screen input parameters is conventional in the art.

Preferably, an observation opening 100 is formed in the box body 1 corresponding to the position from the discharge end of the first belt conveyor to the feeding end of the weighing device 4, a transparent dust-proof plate (not shown) is rotatably mounted on the observation opening 100, a strip-shaped hole for allowing the adjusting plate 6 to move up and down is formed in the adjusting plate 6, a connecting plate (not shown) which inclines downwards and is attached to the adjusting plate 6 is fixedly connected in the box body 1, the connecting plate is positioned right above the first belt conveyor, a through hole is formed in the lower end portion of the connecting plate, the adjusting plate 6 is fixed on the connecting plate through a nut and a screw penetrating through the strip-shaped hole, so that the structure is simple, the adjusting plate 6 is convenient to incline and move horizontally, the distance between the adjusting plate 6 and the first conveyor belt 74 is controllable, and the adjusting plate is more suitable for scattering or tiling different materials on the first conveyor belt 74, the first conveyor belt 74 is ensured to be capable of uniform and stable discharge. By adopting the structure, the arranged observation port 100 is convenient for observing the working condition in the box body 1. The dust guard that sets up under the condition that does not influence the observation, can block the dust, can also play the effect of protection observer safety. The translational connection of the adjustment plate 6 to the casing 1 is not limited to the above arrangement, and the arrangement is only one preferred. Can be arranged according to actual needs in a conventional mode in the field.

As a further preferable mode of this embodiment, two first tensioning assemblies respectively disposed at the left end and the right end of the first auxiliary roller 73 (i.e., a first tensioning assembly that moves back and fixes the left end and the right end of the central shaft of the first auxiliary roller 73) are mounted on the box body 1, the first tensioning assembly includes a fixed block 01, a first screw 02 and a second screw 03, the first screw 02 and the second screw 03 are disposed side by side, and one end portion of the first screw 02 and the second screw 03 is in threaded connection with the box body 1 (i.e., one end portion of the first screw 02 and one end portion of the second screw 03 are fixed by an existing common double nut or are fixed by welding), the fixed block 01 has an arc-shaped recess into which the end portion of the first auxiliary roller 73 is recessed, the first screw 02 and the second screw 03 are respectively disposed at the upper side and the lower side of the arc-shaped recess, and the other end portions of the first screw 02 and the second screw 03 both pass, nuts (not shown) are screwed on the parts of the first screw rod 02 and the second screw rod 03 which penetrate through the fixed block 01. Adopt above-mentioned structural setting, through nut and corresponding first screw rod 02 with the cooperation of second screw rod 03 is realized driving the tensioning that first pair roller 73 translation of 01 adjustment of fixed block realized first conveyer belt 74 and is relaxed, the change of first conveyer belt 74 of can also being convenient for, simple structure, convenient operation, ordinary person can both operate.

Preferably, install two second tensioning sets (pushing the second pair of roller 83's center pin left end, right-hand member move back and fixed second tensioning set) that are located respectively on the left end of second pair of roller 83 and the right both ends on box 1, the second tensioning set with first tensioning set structure is the same, second tensioning set is in under first tensioning set. Adopt above-mentioned structure setting, on the same principle, pass through second tensioning assembly and move back the center pin left end and the right-hand member of the vice roller 83 of second, realize the tensioning of second conveyer belt 84 and relax, the change of second conveyer belt 84 that can also be convenient for, simple structure, convenient operation, ordinary person can both operate.

Preferably, a plurality of driven rollers or support rods for supporting and conveying the corresponding first conveyor belt 74 and the corresponding second conveyor belt 84 are installed between the first main roller 72 and the first auxiliary roller 73 and between the second main roller 82 and the second auxiliary roller 83, so that the conveying capacity of the first conveyor belt 74 and the second conveyor belt 84 can be improved, and heavier objects (i.e., heavy objects such as ice cubes, jelly, etc.) can be conveyed. Can promote like this the utility model discloses an applicability, and then enlarge the utility model discloses an application scope. The above-described support and transmission members for the first conveyor belt 74 and the second conveyor belt 84 are not limited to driven rollers or supporting rods, but may be selected from a load-bearing device as is conventional in the art. The choice of driven rollers or support rods is only preferred.

The utility model relates to a work process of accurate blanking machine of weighing of double-deck belt accuse material as follows:

during operation, the material is by going into hopper 2 blanking to first band conveyer on, along with, first band conveyer further unilateral pay-off work, the material directly falls to the middle part of second band conveyer on, and first band conveyer transported substance falls evenly to be shed on second band conveyer like this. Through the feeding action of the second belt conveyor and the first belt conveyor in the same direction, a large amount of materials on the second belt conveyor are uniformly and directly discharged to the weighing device 4 (namely, a large weighing value is preset on the weighing device 4). When the preset weighing value is reached, the second belt conveyor reversely works for a small section to prevent the material from sliding into the weighing device 4. And simultaneously, a part of the feeding material of the second belt conveyor falls into the feeding end of the lower vibrating blanking device 3. Meanwhile, the vibration blanking device 3 starts to vibrate, and the micro discharge at the discharge end of the vibration blanking device 3 performs micro material supplement on the weighing device 4 through the vibration of the vibration blanking device 3 (namely, the micro value is supplemented to the preset weighing value with a large numerical value). When the second sensor on the feeding end of the vibrating blanking device 3 detects that the material reaches the blanking position, the controller controls the first belt conveyor and the second belt conveyor to stop working. When the weighing value of the weighing device 4 reaches the required accurate scale value (namely the required accurate scale value is the preset large weighing value and the supplement micro-value), the vibration discharging device 3 is controlled to stop working, and the materials are automatically discharged and are discharged from the discharge hopper 5 to the next procedure or directly discharged and packaged. Accomplish once accurate weighing and the ejection of compact, repeat above-mentioned process, realize repeated accurate weighing work. Therefore, the utility model relates to a blanking machine is weighed to accuracy of double-deck belt accuse material, its emergence that not only reduces the unloading inaccuracy effectively, is difficult to control has also avoided weighing the emergence of unable accuracy effectively, and unloading control is more accurate, weighs more accurately, and the error is littleer, and it is higher to weigh the degree of accuracy.

The above embodiments and drawings are not intended to limit the form and style of the present invention, and any suitable changes or modifications made by those skilled in the art should not be construed as departing from the scope of the present invention.

Claims

1. The utility model provides an accurate blanking machine of weighing of double-deck belt accuse material, includes the box and installs on the box to accept complex income hopper, vibrations unloader, weighing device and play hopper in proper order mutually, it installs to go into the hopper on the box, vibrations unloader with weighing device all is in the box, it is external that a hopper is in the box to go out, vibrations unloader with weighing device all has pan feeding end and discharge end, its characterized in that: the automatic feeding device is characterized by further comprising a first belt conveyor with one-way conveying function and a second belt conveyor which is installed in the box body and can switch conveying in two directions, one end of the first belt conveyor is connected to the lower portion of the discharging end of the feeding hopper, the other end of the first belt conveyor is located above the second belt conveyor and connected with the second belt conveyor, the first end of the second belt conveyor is connected with the feeding end of the vibration discharging device in an up-and-down mode, and the second end of the second belt conveyor is connected with the feeding end of the weighing device in an up-and-down mode.

2. The precision weighing blanking machine of claim 1, wherein the precision weighing blanking machine comprises: the first belt conveyor and the second belt conveyor are arranged in the box body side by side up and down, the discharge end of the first belt conveyor is positioned above the middle part of the second belt conveyor, an adjusting plate which can translate up and down and is used for scraping materials falling on the first belt conveyor is installed in the box body, and the adjusting plate is close to the feeding hopper, is positioned right above the first belt conveyor and is arranged obliquely downwards; the vibrating blanking device and the weighing device are arranged side by side and are located under the second belt conveyor, the feeding end of the vibrating blanking device is located under one end of the second belt conveyor, the feeding end of the weighing device is located under the other end of the second belt conveyor, the discharging end of the vibrating blanking device is located in the upper area of the feeding end of the weighing device, and the discharging hopper is located under the discharging end of the weighing device.

3. The precision weighing blanking machine of claim 2, wherein the precision weighing blanking machine comprises: a first material guide plate which is arranged right in front of the discharge end of the first belt conveyor and guides materials to the middle of the second belt conveyor in an inclined manner is arranged in the box body; a second material guide plate is arranged in the box body, the upper part of the second material guide plate is connected with the feeding hopper, the lower part of the second material guide plate is connected with the discharge end of the first belt conveyor and inclines downwards, the upper part of the adjusting plate is close to the feeding hopper, and the lower part of the adjusting plate is close to the feeding hopper and is arranged at the blanking position of the first belt conveyor in an inclined and downward mode; the second material guide plate and the adjusting plate are arranged in an aligned mode, and the distance between the second material guide plate and the lower end portion of the adjusting plate is smaller than the distance between the second material guide plate and the upper end portion of the adjusting plate; the second material guide plate is arranged above the first belt conveyor, the upper end of the second material guide plate is connected with the feeding hopper, and the lower end of the second material guide plate is connected with the feeding end of the first belt conveyor.

4. The precision weighing blanking machine of claim 3, wherein the precision weighing blanking machine comprises: the first belt conveyor comprises a first stepping motor, a first main roller, a first auxiliary roller and a first conveying belt wound on the first main roller and the first auxiliary roller for transmission, the vibration blanking device is positioned right below the first conveying belt, the first stepping motor is fixedly arranged on the box body and positioned between the first conveying belt and the vibration blanking device, and an output shaft of the first stepping motor is in transmission connection with the first main roller through a first chain wheel transmission assembly; two first material blocking pieces which are arranged in an aligned mode along the feeding direction of the first belt conveyor are further installed in the box body, the two first material blocking pieces are located on the first conveying belt, and the lower end portion of the adjusting plate extends into the space between the two first material blocking pieces and is located in the middle of the first material blocking pieces; the lower end parts of the two first material blocking pieces are oppositely bent and are closely attached to the first conveying belt; one end parts of the two first material blocking pieces are fixedly connected with corresponding side walls of the second material guiding plate respectively, the other ends of the two first material blocking pieces are bent oppositely to form a material outlet for gathering materials, and the material outlet extends out of the first conveying belt.

5. The precision weighing blanking machine of claim 4, wherein the precision weighing blanking machine comprises: the second belt conveyor comprises a second stepping motor, a second main roller, a second auxiliary roller and a second conveying belt wound on a second main roller and the second auxiliary roller for transmission, the vibration blanking device is positioned right below the second conveying belt, the second stepping motor is fixedly arranged on the box body and is positioned right above the second conveying belt, and an output shaft of the second stepping motor is in transmission connection with the second main roller through a second chain wheel transmission assembly; two second blocking materials which are arranged in an aligned mode along the feeding direction of the second belt conveyor are installed in the box body, two ends of the two second blocking materials are flush with two ends of the second belt conveyor, the two second blocking materials are located on the second conveying belt, and the lower end portions of the two second blocking materials are bent in opposite directions and are closely attached to the second conveying belt; and two ends of the two second material blocking pieces are oppositely bent to form a material gathering port.

6. The precision weighing blanking machine of claim 5, wherein the precision weighing blanking machine comprises: a first sensor for detecting the material level in the feeding hopper is arranged in the box body, the first sensor is provided with a sensing end, the sensing end of the first sensor faces the feeding hopper, a second sensor for detecting the material level in the vibration blanking device is arranged in the box body, the second sensor is positioned between the second conveying belt and the vibration blanking device, the second sensor is provided with a sensing end, and the sensing end of the second sensor faces the vibration blanking device; the vibration blanking device is characterized in that a controller is installed in the box body and located below the vibration blanking device, a touch screen is installed on the box body and connected with the controller in a two-way mode, the first inductor and the second inductor are respectively and electrically connected with corresponding output ends of the controller, the vibration blanking device is electrically connected with the corresponding output ends of the controller, and the weighing device is connected with the controller in a two-way mode.

7. The precision weighing blanking machine of claim 2, wherein the precision weighing blanking machine comprises: the utility model discloses a weighing device, including box, regulation board, observation hole, regulation board, connecting piece, nut and screw, the observation hole has been seted up to the pan feeding end position that corresponds to first band conveyer's discharge end to weighing device on the box, rotate on the observation hole and install transparent dust guard, set up the bar hole that supplies the regulation board to translate from top to bottom on the regulation board, fixedly connected with downward sloping in the box and with the connection piece that the regulation board pasted, the connection piece is in directly over first band conveyer, the lower tip of connection piece is provided with the through-hole, the regulation board passes through the nut and passes the fix with screw in bar.

8. The precision weighing blanking machine of claim 5, wherein the precision weighing blanking machine comprises: install two first tensioning assembly that are in respectively on first pair roller both ends on the box, first tensioning assembly includes fixed block, first screw rod and second screw rod, first screw rod with set up side by side on the second screw rod, and a tip with box fixed connection, have the confession on the fixed block the arc notch that first pair roller tip was absorbed in, first screw rod and second screw rod are in respectively arc notch upside and downside, first screw rod with the other end of second screw rod all passes the fixed block, first screw rod with the second screw rod passes equal spiral shell is equipped with the nut in the fixed block part.

9. The precision weighing blanking machine of claim 8, wherein the precision weighing blanking machine comprises: two second tensioning assemblies respectively positioned at two ends of the second auxiliary roller are mounted on the box body, the second tensioning assemblies are the same as the first tensioning assemblies in structure, and the second tensioning assemblies are positioned under the first tensioning assemblies.