CN111547281A

CN111547281A - Precise blanking racking machine suitable for strip-shaped and block-shaped materials of clamping and bridging

Info

Publication number: CN111547281A
Application number: CN202010525464.XA
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: 2020-06-10
Filing date: 2020-06-10
Publication date: 2020-08-18

Abstract

The invention discloses a precise blanking racking machine suitable for strip-shaped and block-shaped materials clamped and bridged, which comprises a box body and a first conical hopper arranged on the box body, wherein a vibrating blanking device and a weighing device are arranged in the box body; install the turning device in the first toper hopper, vibrations feed supplement device is including vibrations main part B and second blown down tank structure. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged effectively avoids the phenomenon of tea blockage in the feeding hopper and the phenomenon of inaccurate weighing caused by the fact that blanking amount cannot be accurately controlled.

Description

Precise blanking racking machine suitable for strip-shaped and block-shaped materials of clamping and bridging

Technical Field

The invention relates to the field of precise material distribution and packaging equipment, in particular to a precise blanking and packaging machine suitable for strip-shaped and block-shaped materials which are clamped and bridged.

Background

The tea comprises green tea, black tea and Pu' er tea, the green tea and the black tea are generally packaged by small packaging bags, and the tea packaging bags with shaping effects are attractive in packaging and easy to place. When in packaging, tea leaves are poured into a weighing mechanism of a tea packaging machine, the weighing mechanism weighs 6-8 g of tea leaves, the weighed tea leaves directly fall into a tea packaging bag of the tea packaging machine, and then the tea packaging machine is vacuumized and sealed. The Pu' er tea is prepared by pressing tea into tea cake and then packaging. Therefore, the accurate weighing of the tea leaves is very important in the packaging process of the green tea, the black tea and the Pu' er tea. However, the existing tea packaging machine has the following disadvantages: firstly, tealeaves often takes place phenomenons such as bridge, difficult unloading and ejection of compact cluster at the unloading in-process, leads to going into the hopper putty, can't last accurate unloading, inefficiency. Secondly, during the vibrating feeding process, tea leaves are directly fed into the weighing hopper at one time in a large flow, and the feeding amount is difficult to accurately control, so that the weighing hopper is inaccurate (namely 1-2 g of tea leaves are usually added). The packaging amount of the tea is increased, so that the cost investment is increased for large tea packaging enterprises, the loss is not small for the enterprises, the price of the packaged tea finished products is increased, and the competition of the enterprises is also adversely affected. Thirdly, the blanking can not be controlled according to different tea (namely the shape and the weight of the tea), so that the accurate blanking of different tea can not be used.

Therefore, the inventors of the present invention have made an intensive study on the problem that tea leaves cannot be precisely discharged, and have developed the present invention.

Disclosure of Invention

The invention aims to provide a precise blanking racking machine for strip-shaped and block-shaped materials suitable for material clamping and bridging, which not only effectively avoids the phenomenon of material blockage of tea leaves in a feeding hopper, but also effectively avoids the phenomenon of inaccurate weighing due to the fact that blanking amount cannot be precisely controlled.

In order to achieve the purpose, the invention adopts the following technical scheme:

a precise blanking racking machine suitable for strip-shaped and block-shaped materials of a blocking material and a bridging comprises a box body consisting of a rack and a plurality of plates, wherein a first conical hopper for tea leaves to enter the box body is arranged on the box body, a vibration blanking device for receiving the discharge of the first conical hopper and vibrating the discharge is arranged in the box body, a weighing device for weighing and distributing the discharge of the vibration blanking device is arranged in the box body, a discharge hopper which is arranged below the weighing device and used for discharging the weighed tea leaves outside the box body is arranged on the box body, the vibration blanking device comprises a vibration main body A, a second conical hopper for receiving the discharge of the first conical hopper, a discharge barrel which is arranged under the second conical hopper and fixedly connected with the second conical hopper and communicated with a discharge port of the second conical hopper, and the discharge barrel is a cylindrical cavity, the side wall of the discharge barrel is provided with a right opening, the discharge barrel is fixed on the vibration main body A, a gap is formed between the second conical hopper and the first conical hopper, the inner conical surface of the second conical hopper is provided with at least two material guide sheets arranged around the periphery of the lower port of the second conical hopper, and each material guide sheet is spirally arranged from high to low along the inner conical surface of the second conical hopper; correspond opening part an organic whole and be connected with the first blown down tank structure that is used for the front end and the left side ejection of compact on the play feed cylinder, install the work end that has helical blade on the box or in the first toper hopper to rotate the upender that upwards promotes and stir tealeaves through helical blade, the work end of turner by vertical stretching into to the hopper in the first toper hopper in the play feed cylinder, still including installing in the box and linking up the unloading of blown down tank structure part, and right through vibrations the vibrations feed supplement device of weighing device trace feed supplement, vibrations feed supplement device is in the right side of first blown down tank structure, vibrations feed supplement device is including vibrations main part B and fix on vibrations main part B and be used for the second blown down tank structure of the front end ejection of compact.

As a further optimization, the first discharging chute structure is provided with a vertical piece and a horizontal piece, the vertical piece of the first discharging chute structure is connected with the opening edge of the discharging barrel and extends forwards in an inclined manner from right to left, an included angle formed by the outer wall of the discharging barrel is an acute angle, and the left side edge and the rear side edge of the horizontal piece of the first discharging chute structure are respectively and tightly connected with the lower edge of the vertical piece of the first discharging chute structure and the opening edge at the bottom of the discharging barrel; be connected with right rear on the opening of play feed cylinder and buckle, and be used for drawing the material extremely side fin in the second blown down tank structure, the second blown down tank structure has the recess of orientation around the both ends mouth, the back end fixing of recess has the separation blade that is used for this tip of shutoff, the right groove wall of recess is higher than left cell wall, the left side edge of the horizontal piece of first blown down tank structure has and strides across the left cell wall of recess and stretch into kink in the recess, the horizontal piece of first blown down tank structure with interval has between the recess.

As further preferred, the bottom center of play feed cylinder arches upwards, be provided with on the bottom of play feed cylinder with erect, and above-mentioned vertical piece is connected and extends to the material piece that separates of bottom center department, be provided with on the play feed cylinder and be used for adjusting the material piece that keeps off of above-mentioned opening size, all be provided with a plurality of on the left and right sides outer wall of opening part on the play feed cylinder on to the overhead eave tile or the projection that equidistant side by side in vertical direction, it connects on the homonymy to be provided with on the material piece on the eave tile or the projection to spacing fixing of material piece will keep off the elastic webbing on the play feed cylinder, the both ends of elastic webbing are fixed keep off the material piece and be the annular, or one end is fixed on the elastic webbing keep off the material piece, and offer a plurality of confession along its length direction equidistant the button hole that eave tile or projection.

As a further optimization, the weighing device is installed in the box body, the weighing device comprises an installation frame, a first stepping motor, an infrared sensor, an eccentric wheel disc, a weighing sensor, a square weighing hopper and a lower sealing cover which is movably hinged with the left side wall and the right side wall of the weighing hopper and used for sealing a lower port of the weighing hopper, the installation frame is horizontally arranged horizontally and fixed on the box body, the weighing hopper is arranged at the front side of the installation frame, the weighing sensor is in a long strip shape and is arranged between the installation frame and the weighing hopper, the weighing hopper is installed on the installation frame in a hanging manner through the weighing sensor, the lower sealing cover is provided with an arc-shaped piece, a left connecting plate and a right connecting plate which are correspondingly connected to the left side and the right side of the arc-shaped piece, the left connecting plate is provided with a horizontal connecting rod, a horizontal bearing is sleeved on the connecting rod, and the, the power output shaft of the first stepping motor extends out of the left side wall of the weighing hopper, the bearing rolls and rubs on the outer periphery of the eccentric wheel disc to drive the lower sealing cover to open the lower port of the weighing hopper, the bearing is fixedly mounted on the power output shaft of the first stepping motor once and drives the lower sealing cover to swing upwards to open the lower port of the weighing hopper, the weighing hopper is provided with an infrared sensor which is arranged side by side with the first stepping motor, and the eccentric wheel disc is provided with a limiting hole for limiting the rotation of the eccentric wheel disc by one circle.

As further preferred, be connected with the outer piece of following of the ejection of compact of outside expansion and being convenient for better accepting first blown down tank structure and second blown down tank structure front end on the front edge of the last port of scale hopper and left side edge, the last port of scale hopper has to the straight extension that extends of mounting bracket, the spiral shell is equipped with and is vertical arranging and upper end and is used for the top to lean on the mounting bracket the extension lower surface of scale hopper plays limiting displacement avoids the bolt that the scale hopper excessively atress was put down.

Preferably, the material turning device comprises a second stepping motor and a shaft rod detachably connected to an output shaft of the second stepping motor, the helical blades are fixedly arranged on the outer surface of the shaft rod, a cross beam which is horizontally arranged and two ends of which are fixedly connected with the inner wall of the first conical hopper is arranged in the first conical hopper, the second stepping motor is fixedly arranged on the cross beam, the output shaft of the second stepping motor faces downwards vertically, and the lower end part of the shaft rod extends into the discharge cylinder through a lower port of the second conical hopper.

Preferably, a screw rod which is vertical and is positioned in the center of the bottom of the discharging barrel is arranged at the bottom of the discharging barrel, an umbrella-shaped discharging tray with a downward opening is fixedly installed on the screw rod, the outer edge of the discharging tray is positioned outside the part, corresponding to the lower port, of the second conical hopper, and spaces for tea leaves to pass through are formed between the lower port of the second conical hopper and the inner wall of the discharging barrel.

Preferably, a first sensor for sensing tea leaves in the first conical hopper is mounted in the box body, a limiting hole penetrating through the inner wall and the outer wall of the first conical hopper is formed in the first conical hopper, a transparent sheet for plugging the limiting hole is arranged on the inner wall of the conical hopper, and the sensing end of the first sensor faces the transparent sheet and penetrates through the transparent sheet to sense the tea leaves in the first conical hopper; a second sensor for discharging of the discharging hopper is mounted on the box body, and the sensing end of the second sensor faces the lower end of the discharging hopper; a controller is installed in the box body, a touch screen control panel is installed on the front portion of the box body and is in bidirectional electric control connection with the controller, the first sensor and the second sensor are respectively and electrically connected with the corresponding output end of the controller, the vibration main body A and the vibration main body B are respectively connected with the corresponding output end of the controller, and the weighing device and the material turning device are in electric control connection with the controller; the automatic feeding device is characterized by further comprising a foot switch which is arranged outside the box body and used for manually controlling the feeding of the weighing device, and the foot switch is electrically connected with the controller.

As further preferred, set up the viewing aperture of conveniently observing tealeaves unloading condition on the box, it has a transparent to correspond the activity of viewing aperture department on the box and articulate to be used for the board of sealing of shutoff viewing aperture, be provided with on the box with seal the board junction relative to the connection piece that straightly stretches into in the viewing aperture, the device has permanent magnet on the connection piece, seal be provided with on the board with permanent magnet between through magnetic attraction's magnet piece or metal block.

Preferably, a partition board is arranged in the box body, the partition board divides the inner space of the box body into an upper area and a lower area which are independent, the first conical hopper, the vibration blanking device and the weighing device are arranged in the upper area, the discharge hopper is communicated with the upper area, an air inlet hole for air inlet of the lower area is formed in the position, corresponding to the vibration main body A, on the partition board, a fan for air suction and impurity removal is installed on the partition board, corresponding to the air inlet hole, and the fan is in control connection with the controller.

The invention has the beneficial effects that:

during operation, tealeaves directly gets into in the box through first toper hopper, because install the turning device that has helical blade work end on the box or in the first toper hopper, and the spiral work end on the turning device is vertical by in the first toper hopper to stretch into to the hopper play feed cylinder in, so the turning device during operation drive spiral work end is rotatory to upwards promote and turn tealeaves through the helical rotation, can avoid first toper hopper and second toper hopper unloading to block up like this to take place. Because the inner conical surface of the second conical hopper is provided with the guide piece which is spirally arranged, when tea leaves of the first conical hopper fall onto the second conical hopper, the tea leaves at the discharge port of the second conical hopper are vibrated away from the second conical hopper firstly under the driving of vibration of the vibration main body A, and enter the discharge barrel to participate in normal feeding action. When the residual materials in the second conical hopper do rotary motion along the inner conical surface, the materials close to the material guide piece or falling on the material guide piece can move upwards along the direction of the material guide piece to form a gap around the material guide piece, and the gap is filled by new materials. Because the guide motion of guide piece and the downward motion of filling of material are two opposite directions's motion, from this, tealeaves just produces the action that a similar was rolled in second toper hopper, the promotion and the tealeaves that turn over of the last helical blade work end of cooperation stirring device have just so solved tealeaves and have taken place the phenomenon such as bridge, difficult unloading and ejection of compact armful in first toper hopper and second toper hopper to guaranteed that the feed of play feed cylinder is even, continuous, and then improved the efficiency and the precision of title material.

Simultaneously, because vibrations main part A vibration drives down the feed cylinder and gives weighing device through the even ejection of compact of first blown down tank structure, and the even ejection of compact of part gives the second blown down tank structure, so at vibrations unloading in-process, owing to vibrations main part A drives the feed cylinder and passes through first blown down tank structure and vibrations main part B and shake the ejection of compact through the second blown down tank structure together, realize a large amount of quick unloading to weighing device. When the tealeaves of unloading to weighing device reaches soon and weighs the weight, vibrations main part A stop work, vibrations main part B continues to carry out slow small amount feed supplement action through second blown down tank structure, and when the tealeaves of unloading to weighing device reached and weighs the weight, vibrations main part B also stop work. Realize the slow small amount vibrations feed supplement action of the quick vibrations ejection of compact, not only guaranteed that the feed of play feed cylinder is even, continuous, improved the efficiency and the precision of title material moreover. The problem of current tealeaves packagine machine during operation unloading volume be difficult to accurate control and lead to weighing hopper inaccurate is solved. Therefore, the precise blanking racking machine for the strip-shaped and block-shaped materials suitable for material clamping and bridging solves the problems of bridging, difficult blanking, material discharging and agglomeration of tea in blanking through the self-structure arrangement of the second conical hopper and the first discharging groove structure. The feeding and weighing are supplied through step feeding and material supplementing work, and the problem that the weighing hopper is inaccurate due to the fact that the blanking amount is difficult to accurately control during the work of the existing tea packing machine is solved.

Drawings

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

Fig. 1 is a schematic perspective view of the present invention (the connecting wire of the foot switch connecting box is omitted in the figure).

Fig. 2 is a schematic top view of the present invention (the connecting wires for connecting the foot switch to the case are omitted).

Fig. 3 is another view angle structure diagram of fig. 1 (a part of the box body is removed in the figure and the connecting line of the foot switch connecting box body is omitted).

FIG. 4 is a schematic view of the connection structure of the vibration feeding device and the vibration feeding device with the weighing device.

Fig. 5 is another view structure diagram of fig. 4.

FIG. 6 is a schematic view of the weighing apparatus according to the present invention.

FIG. 7 is a schematic view of the installation structure of the vibration blanking device and the vibration feeding device of the present invention.

In the figure:

a box body-1; a partition plate 11; a first conical hopper-2; a discharge hopper-3; a vibration main body A-41; a second conical hopper-42; a discharge barrel-43; side flap-431; a sheet of separator 432; a lead sheet-44; a first discharge chute configuration-45; vertical piece-451; a horizontal plate-452; a vibration main body B-51; second discharge chute arrangement-52; a groove-521; a flap-522; a mounting bracket-61; a first stepper motor-62; an infrared sensor-63; an eccentric wheel disc-64; -a load cell-65; -66, a weigh bin; a lower closure-67; a connecting rod-68; a bearing-69; a second stepper motor-71; -73 helical blades; a cross-beam-74; material blocking piece-8; a blanking disc-9; a first sensor-01; a second sensor-02; touch screen control panel-03; a foot switch-04; sealing plate-05.

Detailed Description

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

As shown in fig. 1-7, the precision blanking racking machine suitable for strip-shaped and block-shaped materials of material blocking and bridging of the present invention comprises a box body 1 composed of a frame and a plurality of plates, wherein a first conical hopper 2 for tea leaves to enter into the box body 1 is installed on the box body 1, a vibration blanking device for receiving the discharge of the first conical hopper 2 and for vibration discharge and a weighing device for weighing and distributing the discharge of the vibration blanking device are installed in the box body 1, a discharge hopper 3 for discharging the weighed tea leaves out of the box body 1 is installed on the box body 1, the vibration blanking device comprises a vibration main body a41, a second conical hopper 42 for receiving the discharge of the first conical hopper 2, and a discharge barrel 43 which is located under the second conical hopper 42 and is fixedly connected with the second conical hopper 42 and communicated with the lower port of the second conical hopper 42, the discharging barrel 43 is a cylindrical chamber, the side wall of the discharging barrel 43 is provided with a right opening, the discharging barrel 43 is fixed on the vibrating body A41, a gap is arranged between the second conical hopper 42 and the first conical hopper 2, three material guide sheets 44 arranged around the lower end opening of the second conical hopper 42 are welded on the inner conical surface of the second conical hopper 42, and each material guide sheet 44 is arranged along the inner conical surface of the second conical hopper 42 in a spiral shape from high to low; thus, when tea leaves fall from the first conical hopper 2 to the second conical hopper 42, the tea leaves at the discharge port (i.e. the small-end outlet) of the second conical hopper 42 are vibrated away from the second conical hopper 42 and enter the discharge barrel 43 to participate in the normal feeding action under the vibration of the vibration body a 41. While the tea leaves remaining in the second conical hopper 42 rotate along the inner conical surface, the tea leaves near the material guiding sheet 44 or falling on the material guiding sheet 44 move upward along the direction of the material guiding sheet 44 to form a gap around the material guiding sheet 44, and the gap is filled with new tea leaves. Because the guide motion of the guide piece 44 and the downward filling motion of the tea leaves are two motions in opposite directions, the tea leaves generate a rolling-like motion in the second conical hopper 42, so that the problems of bridging, difficult blanking, material discharging agglomeration and the like of the tea leaves in the first conical hopper 2 and the second conical hopper 42 are solved, the uniform and continuous feeding of the discharging barrel 43 is ensured, and the efficiency and the accuracy of material weighing are improved. Correspond opening part an organic whole and be connected with first blown down tank structure 45 that is used for the front end and the left side ejection of compact on play feed cylinder 43, install the work end that has helical blade on the box 1 or in the first toper hopper 2 to rotate the turning device who upwards promotes and stir tealeaves through helical blade, turning device's work end by vertical stretching into to the hopper in the first toper hopper 2 in the play feed cylinder 43, when realizing turning device work, drive spiral work end is rotatory, and upwards promote and stir tealeaves through the spiral rotation, just produces a similar action that rolls in tealeaves in second toper hopper 42, has just so solved tealeaves and has taken place phenomenons such as bridging, difficult unloading and ejection of compact and hold a group in first toper hopper 2 and second toper hopper 42, can avoid first toper hopper 2 and second toper hopper 42 unloading jam to take place, thereby guaranteed that play feed cylinder 43 feed is even, And the efficiency and the accuracy of material weighing are improved continuously.

The precision blanking racking machine is suitable for blanking strip-shaped and block-shaped materials which are clamped and bridged, and further comprises a vibration material supplementing device which is arranged in the box body 1, is connected with a discharging groove structure to partially feed materials and supplements trace materials to the weighing device through vibration, the vibration material supplementing device is arranged on the right side of the first discharging groove structure 45, and the vibration material supplementing device comprises a vibration main body B51 and a second discharging groove structure 52 which is fixed on a vibration main body B51 and used for discharging materials at the front end. Adopt above-mentioned structure setting, realize being driven down the feed cylinder 43 by vibrations main part A41 and give weighing device through the even ejection of compact of first blown down tank structure 45, and the second blown down tank structure 52 is given in the even ejection of compact of part, so at vibrations unloading in-process, owing to vibrations main part A41 drives feed cylinder 43 and shakes the ejection of compact through first blown down tank structure 45 and vibrations main part B51 through second blown down tank structure 52 together, realize a large amount of quick unloading to weighing device. When the tea leaves fed to the weighing device reach the weighed weight, the vibration body A41 stops working, the vibration body B51 continues to perform slow small-amount material supplementing action through the second discharge chute structure 52, and when the tea leaves fed to the weighing device reach the weighed weight, the vibration body B51 also stops working. Realize the slow small amount vibrations feed supplement action of the quick vibrations ejection of compact, not only guaranteed that the feed of play feed cylinder 43 is even, continuous, improved the efficiency and the precision of title material moreover. The problem of current tealeaves packagine machine during operation unloading volume be difficult to accurate control and lead to weighing hopper inaccurate is solved.

In the above, specifically, the vibration body a41 and the vibration body B51 both adopt the vibration body in the vibration mechanism of the double-material tea racking machine disclosed in the prior patent application No. CN201721290937.2, and are the same as the vibration body. Alternatively, a first vibration mechanism or a second vibration mechanism is disclosed in a vibration feeding mechanism capable of accurately feeding materials, and the first vibration mechanism or the second vibration mechanism is the same as the first vibration mechanism or the second vibration mechanism, which is disclosed in the prior patent application No. CN 201720517974.6. In other words, both the vibration body a41 and the vibration body B51 are existing. It should be noted that, according to the actual situation, the spiral inclination angle of the material guiding sheet 44 from high to low can be adjusted appropriately to change the amount and difficulty of the material guiding, the shape of the material guiding sheet 44 can be adjusted appropriately to change the amount and strength of the material guiding, the length of the material guiding sheet 44 can be adjusted appropriately to change the strength of the material guiding, the width of the material guiding sheet 44 can be adjusted appropriately to increase the amount and strength of the material guiding, and the rising height of the material guiding sheet 44 attached to the inner conical surface can be adjusted appropriately according to the condition of the second conical hopper 42. Furthermore, the number of the guide sheets 44 may be appropriately adjusted to vary the number and strength of the guide. In a preferred embodiment, the material guiding pieces 44 are provided in three pieces, the spiral direction of each material guiding piece 44 is generally the same, and the material guiding pieces are uniformly arranged around the inner conical surface of the second conical hopper 42 to form a spiral ascending material guiding structure, which can be appropriately adjusted according to the inner conical surface of the second conical hopper 42 to change the difficulty and strength of material guiding. In summary, the preferred structure of the material guiding sheets 44 is not intended to limit the shape, size and number, and any shape and style changes, so long as the structure does not depart from the scope of the present invention.

In this embodiment, the first discharging chute structure 45 has a vertical piece 451 and a horizontal piece 452, the vertical piece 451 of the first discharging chute structure 45 is connected with the opening edge of the discharging barrel 43 and extends forward from right to left in an inclined manner, an included angle formed by the outer wall of the discharging barrel 43 is an acute angle, and the left side edge and the rear side edge of the horizontal piece 452 of the first discharging chute structure 45 are respectively closely connected with the lower edge of the vertical piece 451 of the first discharging chute structure 45 and the opening edge at the bottom of the discharging barrel 43; the discharging barrel 43 is integrally connected with a side wing 431 which is located at the opening of the discharging barrel and is bent towards the right rear side, and the side wing 431 is mainly used for guiding materials to the inside of the second discharging groove structure, so that the opening of the discharging barrel 43 is prevented from leaking materials to the position of the second discharging groove structure. The second discharging chute structure 52 is provided with a groove 521 with two front and back facing ports, a blocking piece 522 for blocking the end part is fixed at the back end part of the groove 521, the right chute wall of the groove 521 is higher than the left chute wall, the left side edge of the horizontal piece 452 of the first discharging chute structure 45 is provided with a bending part which crosses the left chute wall of the groove 521 and extends into the groove 521, and a space is reserved between the horizontal piece 452 of the first discharging chute structure 45 and the groove 521. Specifically, the first tapered hopper 2, the second tapered hopper 42, the first discharging chute structure 45 and the second discharging chute structure 52 are all made of stainless steel, and preferably, the first tapered hopper 2, the second tapered hopper 42, the first discharging chute structure 45 and the second discharging chute structure 52 are all made of 304 stainless steel. Adopt above-mentioned structure to set up, moreover, the steam generator is simple in structure, and the molding is unique and practical, when realizing that first blown down tank structure 45 supplies with weighing device in the ejection of compact of a large amount of front ends, the partial ejection of compact of right side carries out the feed supplement for second blown down tank structure 52 structure and supplies with, realizes that second blown down tank structure 52 also can last to the front end feed supplement, and when the weighing device reaches predetermineeing the weighing value soon, carry out trace or a small amount of feed supplement by second blown down tank structure 52, and then can promote the degree of accuracy of weighing.

As a preferable mode of this embodiment, the bottom center of the discharging barrel 43 is upwardly arched, and the bottom of the discharging barrel 43 is provided with a material separating sheet 432 that is vertically arranged and connected to the vertical sheet 451 and extends to the bottom center, so that the tea falling into the discharging barrel 43 can only be uniformly discharged in a single direction to the first discharging chute structure 45 due to the blocking of the material separating sheet 432. It is used for adjusting the material piece 8 that blocks of above-mentioned opening size to be provided with on the play feed cylinder 43, material piece 8 is right trapezoid's arc piece, it all is provided with a plurality of on the left and right sides outer wall of opening part a plurality of on the vertical direction equidistant eave tile or projection (not shown in the figure) side by side to go out feed cylinder 43, be provided with on the material piece 8 and connect on the homonymy eave tile or projection to with the material piece 8 spacing fixing elastic webbing (not shown in the figure) on going out feed cylinder 43, the elastic webbing here adopts to be current, the both ends of elastic webbing are fixed material piece 8 is last and be the annular, or one end is fixed on the elastic webbing material piece 8, and has seted up a plurality of confessions along its length direction equidistant spacing hole that eave tile or projection passed. Specifically, the material blocking sheet 8 is a silica gel sheet or a non-woven fabric sheet, so that resonance can be avoided when the material discharging barrel 43 vibrates passively, and noise generated by a contact part can be avoided when the material discharging barrel 43 vibrates passively. Adopt above-mentioned structure setting, the material piece 8 that keeps off of setting can be adjusted out the feed cylinder 43 ejection of compact as required manually on the one hand and give first blown down tank structure 45, realizes that the load is controllable. On the other hand, the tea bag is adjusted according to different tea leaves and different tea products, so that the application range of the tea bag is expanded. The plurality of hook heads or the convex columns are mainly used for fixing the material blocking sheet 8 at the opening of the discharging barrel 43 and blocking the opening of the discharging barrel 43. Simultaneously, the elastic belts on the two sides of the material blocking piece 8 are matched with two different hooks or protruding columns on the same plane in a one-to-one correspondence mode, so that the material blocking piece 8 is fixed at the opening of the discharging barrel 43 to be adjusted in a vertical lifting mode (namely the shielding size of the material blocking piece 8 on the opening of the discharging barrel 43 is changed).

As another preferred embodiment, a fixing plate is disposed at the opening of the discharging barrel 43, a plurality of first holes vertically arranged side by side corresponding to a pair of parallel right-angle sides of the blocking sheet 8 are disposed on the blocking sheet 8, second holes corresponding to the first holes are disposed on the fixing plate and the side flap 431, the plurality of first holes on the blocking sheet 8 are implemented by matching with the second holes with different heights on the fixing plate and the side flap 431, and the blocking sheet 8 is adjustable at the opening of the discharging barrel 43 (i.e. the size of the opening of the discharging barrel 43 is adjusted through the blocking sheet 8), so as to adjust the discharging of the discharging barrel 43.

In this embodiment, the weighing apparatus is installed in the box 1, and the weighing apparatus includes an installation frame 61, a first stepping motor 62, an infrared sensor 63 (specifically, the infrared sensor 63 employs an existing M12 reflection laser photoelectric infrared sensor, and a visible light spot small cylindrical 12 mm laser photoelectric sensor), an eccentric wheel disk 64, a weighing sensor 65 (specifically, the weighing sensor 65 employs a single-point weighing sensor GNS-D04 manufactured by shenzhen jinuosheng limited), a square weighing hopper 66, and a lower cover 67 movably hinged to left and right side walls of the weighing hopper 66 and used for sealing a lower port of the weighing hopper 66, where the weighing hopper 66 and the lower cover 67 are made of stainless steel, and preferably, both the weighing hopper 66 and the lower cover 67 are made of 304 stainless steel. Mounting bracket 61 horizontal crouch sets up and fixes on box 1, weighing hopper 66 is in the front side of mounting bracket 61, weighing sensor 65 is rectangular shape, and be in mounting bracket 61 with between the weighing hopper 66, it is specific: weighing sensor 65's one end with mounting bracket 61 fixed connection, weighing sensor 65's the other end is connected on the rear side of weighing hopper 66, weighing hopper 66 suspends in midair through weighing sensor 65 and installs on mounting bracket 61, lower closing cap 67 has the arc piece and corresponds left connecting plate and the right connecting plate of connecting in the arc piece left and right sides, left side connecting plate is provided with the connecting rod 68 of lying, the cover is equipped with bearing 69 on the connecting rod 68, first step motor 62 sets up and installs in the back lateral wall of weighing hopper 66 crouches, and is in the below of bearing 69, the power output shaft of first step motor 62 stretches out the left side wall of weighing hopper 66, the outer periphery of eccentric wheel dish 64 bearing 69 rolling friction realizes its rotation round drive down closing cap 67 opens the lower port of weighing hopper 66 once fixed mounting on the power output shaft of first step motor 62, the lower end opening of the weighing hopper 66 is driven to swing open on the lower sealing cover 67 through the lower end opening, the infrared sensor 63 arranged side by side with the first stepping motor 62 is installed on the weighing hopper 66, and a limiting hole for limiting the rotation of the eccentric wheel disc 64 by one circle of infrared light emitted by the infrared sensor 63 is formed in the eccentric wheel disc 64. By adopting the structure, the structure is simple, the manufacture is convenient, and the acquisition is easy. When the first stepping motor 62 drives the eccentric wheel disc 64 to rotate for one circle, the eccentric wheel disc 64 is used for realizing the purpose of pushing the lower sealing cover 67 to swing upwards to open the upper stroke of the lower port of the weighing hopper 66 through the rolling friction of the bearing 69 at the outer peripheral edge, and the eccentric wheel disc 64 continues to rotate to automatically swing downwards to close the lower port of the weighing hopper 66 (namely the eccentric wheel disc 64 rotates for one circle to drive the lower sealing cover 67 to open the lower port of the weighing hopper 66 once).

In this embodiment, be connected with the outer piece of following of the ejection of compact of outside expansion and being convenient for better accepting first blown down tank structure 45 and second blown down tank structure 52 front end on the front edge of the last port of scale hopper 66 and the left side edge, the last port of scale hopper 66 has to the straight extension that extends of mounting bracket 61, the spiral shell is equipped with on mounting bracket 61 and is vertical arranging and upper end and is used for the top to lean on the screw bolt of the excessive atress lower hem of scale hopper 66 is avoided to extension lower surface limit effect. By adopting the structure, the arranged bolts avoid that the weighing hopper 66 is excessively stressed to swing downwards to weigh too heavy and crush the weighing sensor 65, so that the weighing sensor 65 is protected.

In this embodiment, the material turning device includes a second step motor 71 and a shaft rod (not shown) detachably connected to an output shaft of the second step motor 71, specifically, a sleeve body is fixed to an upper end of the shaft rod, and the sleeve body and a bolt are inserted into the sleeve body to tightly support and fix the output shaft of the second step motor 71, so that the shaft rod is detachably connected to the output shaft of the second step motor 71. The helical blades 73 are fixedly arranged on the outer surface of the shaft rod, a cross beam 74 which is horizontally arranged and two end parts of which are fixedly connected with the inner wall of the first tapered hopper 2 is arranged in the first tapered hopper 2, the second stepping motor 71 is fixedly arranged on the cross beam 74, an output shaft of the second stepping motor 71 faces downwards vertically, and the lower end part of the shaft rod extends into the discharging barrel 43 through the lower port of the second tapered hopper 42. Preferably, the shaft and the helical blade 73 both extend downward and are near the center of the bottom of the discharging cylinder 43, so that the tea leaves can be turned sufficiently to avoid bridging or overlapping. By adopting the structure, the structure is simple, the installation is convenient, the shaft lever, the helical blade 73 and the second stepping motor 71 are easy to obtain, and meanwhile, the transmission structure is simple and energy-saving. The second stepping motor 71 drives the shaft lever and the helical blades 73 to lift and turn the tea leaves, so that the problem that the tea leaves are difficult to discharge and easy to bridge is solved. Therefore, the tea leaves leaving the second conical hopper 42 can be well controlled, and can rapidly and smoothly enter the discharging barrel 43 and vibrate and move the first discharging groove structure 45 and the second discharging groove structure 52, so that normal and stable feeding movement is realized, the weighing precision is improved, and the weighing continuity, uniformity and the like are ensured.

As a further preferred embodiment, a screw rod which is vertical and is located on the bottom center of the discharging cylinder 43 is arranged on the bottom of the discharging cylinder 43, an umbrella-shaped lower tray 9 with a downward opening is fixedly installed on the screw rod, the outer edge of the lower tray 9 is located outside the part opposite to the lower port of the second conical hopper 42, and spaces for tea leaves to pass through are arranged between the lower ports of the lower tray 9 and the second conical hopper 42 and between the lower tray 9 and the inner wall of the discharging cylinder 43. Adopt above-mentioned structure setting, the unloading dish 9 of setting, the during operation is along with vibrations main part A41 drives and vibrates, and when second toper hopper 42 tealeaves fall on the quotation of unloading dish 9, because unloading dish 9 vibration automatic dispersion is opened, realize evenly carrying out the unloading along unloading dish 9, avoid second toper hopper 42 end opening exhaust tealeaves to take place to prick and pile. More be favorable to the even vibration ejection of compact, guarantee the even and stable ejection of compact of tealeaves. Through even and stable ejection of compact control of tealeaves, realize being favorable to more weighing, promote to weigh accuracy and stability. Here, it should be noted that: the vibrating material discharging device is equivalent to the fact that the discharging tray 9 is additionally arranged on the basis of the second conical hopper 42 and the material turning device, the material guiding sheet 44, the material turning device, the discharging barrel 43, the second conical hopper 42 and the discharging tray 9 are combined together to form vibrating material discharging, and the problems that certain materials are bridged and difficult to discharge are solved. The vibrating discharging device is particularly suitable for vibrating discharging of the strip-shaped tea which is light in weight and easy to hook, and has the advantages of simple structure, wide application range, convenience and flexibility in operation, practicability, reliability and the like.

In this embodiment, a first sensor 01 (specifically, the first sensor 01 is an existing infrared sensor) for sensing tea leaves in the first conical hopper 2 is installed in the box body 1, a limiting hole penetrating through the inner wall and the outer wall of the first conical hopper 2 is formed in the first conical hopper 2, a transparent sheet for plugging the limiting hole is arranged on the inner wall of the conical hopper, and a sensing end of the first sensor 01 faces the transparent sheet and senses the tea leaves in the first conical hopper 2 through the transparent sheet; a second sensor 02 (specifically, the first sensor 01 adopts an existing infrared sensor) for discharging from the discharging hopper 3 is mounted on the box body 1, and the sensing end of the second sensor 02 faces the lower end part of the discharging hopper 3; a controller (specifically, the controller is an existing common controller, namely, a conventional controller in the field) is installed in the box body 1, a touch screen control panel 03 is installed on the upper front portion of the box body 1 (namely, the touch screen control panel 03 is the existing one, is the same as a touch screen of an existing mobile phone, and has display and input functions), the touch screen control panel 03 is in bidirectional electric control connection with the controller, the first sensor 01 and the second sensor 02 are respectively and electrically connected with corresponding output ends of the controller, the vibration main body A41 and the vibration main body B51 are respectively connected with corresponding output ends of the controller, and the weighing device and the material overturning device are in electric control connection with the controller; the automatic material feeding device is characterized by further comprising a foot switch 04 (specifically, the foot switch 04 adopts a TFS-201 foot switch of the existing model) which is arranged outside the box body 1 and used for manually controlling the material feeding of the weighing device, and the foot switch 04 is electrically connected with the controller. By adopting the structure, the arranged foot switch 04 is connected with a loop through the manual foot switch 04, and the controller controls the first stepping motor 62 to drive the eccentric wheel disc 64 to rotate to work, so that the weighing and blanking are manually controlled. It should be noted here that, not only the blanking of the weighing device is controlled manually through the foot switch 04, but also the blanking is controlled manually and remotely through the wireless remote controller and the electric signal transmission to the controller in the conventional mode.

Specifically, the infrared sensor 63 is electrically connected with the controller (that is, the infrared sensor 63 is electrically connected to a corresponding input of the controller through a wire), so that in the process that the first stepping motor 62 drives the eccentric wheel disc 64 to rotate, an electric signal is generated when the infrared sensor 63 rotates the eccentric wheel disc 64 for a circle of return, the electric signal is fed back to the controller, and the controller controls the first stepping motor 62 to stop working, so that the eccentric wheel disc 64 is rotated for limiting.

In this embodiment, it is preferred, set up the viewing aperture of conveniently observing tealeaves unloading condition on the box 1, it has a transparent to correspond the activity of viewing aperture department and articulate on the box 1 to be used for the sealing plate 05 of shutoff viewing aperture, be provided with on the box 1 with seal the plate 05 junction relative to the connection piece that straightly stretches into in the viewing aperture, the device has permanent magnet on the connection piece, seal the plate 05 on be provided with and pass through magnetic attraction's magnet piece or metal block between the permanent magnet. Adopt above-mentioned structural arrangement, the sealing plate 05 of setting, the main effect has two points: firstly, be convenient for observe tealeaves unloading condition and weighing device behavior. Secondly, can block that the dust gets into in the box 1, can avoid tealeaves to bounce out from the box 1 (promptly vibration ejection of compact unloading to title material in-process bounce outside the box 1). The sealing plate 05 is also connected with a handle which is convenient to open, the sealing plate 05 is blocked on the observation port in a magnetic suction mode, and the sealing plate is ingenious in design, simple in structure and convenient to use.

As a further preferable mode of this embodiment, a partition plate 11 is disposed in the box body 1, the partition plate 11 divides the internal space of the box body 1 into an upper area and a lower area, the first conical hopper 2, the vibration discharging device and the weighing device are all disposed in the upper area, the discharging hopper 3 is communicated with the upper area, an air inlet hole for air inlet of the lower area is formed in the partition plate 11 at a position corresponding to the vibration main body a41, a fan (not shown in the figure) for air suction and impurity removal is installed in the partition plate 11 corresponding to the air inlet hole, and the fan is in control connection with the controller. Adopt above-mentioned structure to set up, the fan of setting, the during operation through with the mode of induced drafting dust, tea powder or tiny impurity etc. that probably sneak into in with tealeaves suction (getting rid of before tealeaves vibration unloading to weighing device promptly), promotes the tealeaves quality, more is favorable to guaranteeing to weigh accurately simultaneously. Dust, tea powder or fine impurities and the like removed by the fan in an air suction mode are collected in the lower area, so that centralized treatment is facilitated.

As further preferred, be in on the baffle 11 corresponding week portion of fresh air inlet in above-mentioned lower region and set up a plurality of couples (not shown in the figure), directly hang the sack through the couple to make the sack keep opening the state, dust, tea powder or tiny impurity etc. that are got rid of with the mode of induced drafting by the fan like this can directly be gone into the sack, collect convenient simple, save the trouble of clearance, be favorable to reducing artifical clearance cost and very practical.

The invention relates to a precise blanking racking machine suitable for strip and block materials of blocking and bridging, which comprises the following working processes:

(1) during operation, tea leaves are poured into the first conical hopper 2, the first sensor 01 senses the tea leaves in the first conical hopper 2, an electric signal is sent to the controller, the controller controls the second stepping motor 71 to work, the second stepping motor 71 drives the shaft rod to lift the tea leaves and turn over the tea leaves through the helical blades 73 on the shaft rod (the second stepping motor 71 can be controlled by the controller to start working according to actual needs, namely the controller can also start working through the second stepping motor 71 according to different types of the tea leaves), and meanwhile, the controller controls the vibration main body A41 and the vibration main body B51 to vibrate. In the vibration process of the vibration main body A41 and the vibration main body B51, the vibration main body A41 drives the second conical hopper 42, the discharging cylinder 43 and the first discharging groove structure 45 sequentially disperse tea leaves and uniformly scatter the tea leaves in a vibration mode, one part of the tea leaves scattered by the first discharging groove structure 45 and uniformly scattered in a vibration mode directly fall into the weighing hopper 66 from the front end of the tea leaves, the other part of the tea leaves is supplied into the second discharging groove structure 52 on the right side of the tea leaves, the vibration main body B51 drives the second discharging groove structure 52 to vibrate, the tea leaves in the second discharging groove structure 52 directly fall into the weighing hopper 66 from the front end of the tea leaves, and the tea leaves are uniformly and stably supplied to the weighing hopper 66. (it should be noted here that it is well known in the art to set the load cell 65 to weigh approximately the desired load value a1 and reach the desired load value a2 in advance on the controller by touching the display panel, and to set the load cell 65 to weigh approximately the desired load value a1 and reach the desired load value a2 on the controller).

When the load cell 65 fast weighing controller mounted on the weighing hopper 66 reaches a predetermined weighing value (i.e. approaches the desired weighing value a1), the controller controls the vibrating body A41 to stop working first, and the vibrating body B51 continues to vibrate to slowly feed a small amount of material into the weighing hopper 66. When the weighing sensor 65 weighs the tea leaves and reaches the predetermined weighing value (i.e. reaches the required weighing value a2), the controller controls the vibration main body B51 to stop working (at this time, the controller controls the second stepping motor 71 to stop working or continue working, i.e. continue turning the tea leaves or stop turning the tea leaves). At this time, the circuit is switched on through the manual pedal switch 04, the controller controls the first stepping motor 62 to drive the eccentric wheel disc 64 to rotate, the infrared sensor 63 is electrically connected with the controller (i.e. the infrared sensor 63 is electrically connected with a corresponding input of the controller through a conducting wire), so that when the first stepping motor 62 drives the eccentric wheel 64 to rotate, the eccentric wheel disc 64 is rotated for a circle by the infrared sensor 63, at the moment, the infrared sensor 63 emits infrared light to pass through the limiting hole of the eccentric wheel disc 64, when the light path is not shielded, the infrared sensor 63 breaks the loop of the block and the controller (waiting for the next time, the manual foot switch 04 is turned on, and then the controller controls the first stepping motor 62 to drive the eccentric wheel disc 64 to rotate, and the controller controls the first stepping motor 62 to stop working, so that the eccentric wheel disc 64 is rotated and limited. In the process that the first stepping motor 62 drives the eccentric wheel disc 64 to rotate for one circle, the bearing 69 on the outer peripheral edge of the eccentric wheel disc 64 realizes the rolling friction to push the lower sealing cover 67 to swing upwards to open the upper stroke of the lower port of the weighing hopper 66, and the lower sealing cover 67 automatically swings downwards to close the lower stroke of the lower port of the weighing hopper 66 along with the continuous rotation of the eccentric wheel disc 64 (namely, the eccentric wheel disc 64 drives the lower sealing cover 67 to open the lower port of the weighing hopper 66 once when rotating for one circle). The above working process is repeated, and accurate weighing and discharging at one time are realized.

Therefore, the precise blanking racking machine applicable to the strip-shaped and block-shaped materials with blocked and bridged materials can solve the problems of bridging, difficult blanking, material discharging, agglomeration and the like of tea during blanking, and the feeding and weighing are supplied through step feeding and material supplementing work, so that the problem that the material weighing hopper 66 is inaccurate due to the fact that the blanking amount is difficult to accurately control during the working of the conventional tea packaging machine is solved, stable blanking and no material blockage are realized, precise weighing (namely, the control error of the precise weighing of tea is +/-2 mg) is realized, the weighing is lower than the national standard (namely, the national standard +/-5 mg of tea packaging) is realized, and the cost investment of enterprises is favorably reduced. Meanwhile, the automatic quantitative feeding of the tea is realized, so that the labor is saved, and the weighing and packaging work efficiency is improved.

The invention relates to a precise blanking and subpackaging machine suitable for clamping and bridging strip-shaped and block-shaped materials, in particular to a precise blanking and subpackaging machine suitable for tea (namely Jinjunmei tea and the like) which is light in weight and easy to conglomerate mutually. The precise blanking split charging machine suitable for the strip-shaped and block-shaped materials of the blocking and bridging can be used for splitting Pu 'er tea, so that the discharge hopper 3 of the precise blanking split charging machine is directly connected with the packaging device to directly split charge tea (namely directly connected with Pu' er tea for packaging). It should be noted that: the precision blanking racking machine is mainly used for the racking and packaging of tea leaves and is also suitable for the racking and packaging of granular materials and powder strip-shaped materials.

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

Claims

1. The utility model provides a be suitable for accurate unloading racking machine of strip, cubic material of card material, bridge, includes the box that comprises frame and a plurality of boards, install on the box and supply tealeaves to get into the first toper hopper in the box, install in the box and accept the ejection of compact of first toper hopper and be used for the vibrations unloader ejection of compact and be used for weighing the weighing device who divides the material to the vibrations unloader ejection of compact, install on the box and be in weighing device below to be used for weighing back tealeaves and discharging hopper, its characterized in that outside the box: the vibration blanking device comprises a vibration main body A, a second conical hopper and a discharging barrel, wherein the second conical hopper is used for receiving the discharging of the first conical hopper, the discharging barrel is arranged under the second conical hopper and fixedly connected with the second conical hopper, and is communicated with a lower port of the second conical hopper, the discharging barrel is a cylindrical cavity, an opening facing right is formed in the side wall of the discharging barrel, the discharging barrel is fixed on the vibration main body A, a gap is formed between the second conical hopper and the first conical hopper, at least two material guide sheets arranged around the lower port of the second conical hopper are arranged on the inner conical surface of the second conical hopper, and each material guide sheet is arranged in a spiral manner from high to low along the inner conical surface of the second conical hopper; a first discharging groove structure for front end and left side discharging is integrally connected with the discharging barrel corresponding to the opening, a working end with a helical blade is arranged on the box body or in the first conical hopper, a turning device for lifting and turning tea upwards through the rotation of the helical blade is arranged on the box body or in the first conical hopper, the working end of the turning device vertically extends into the hopper from the first conical hopper to the discharging barrel,

still including installing in the box and linking up the unloading of blown down tank structure part to it is right through vibrations the vibrations feed supplement device of weighing device trace feed supplement, vibrations feed supplement device is in the right side of first blown down tank structure, vibrations feed supplement device is including vibrations main part B and fix on vibrations main part B and be used for the second blown down tank structure of the front end ejection of compact.

2. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 1, which is characterized in that: the first discharging groove structure is provided with a vertical piece and a horizontal piece, the vertical piece of the first discharging groove structure is connected with the opening edge of the discharging barrel and extends forwards in an inclined mode from right to left, an included angle formed by the outer wall of the discharging barrel is an acute angle, and the left side edge and the rear side edge of the horizontal piece of the first discharging groove structure are respectively and tightly connected with the lower edge of the vertical piece of the first discharging groove structure and the opening edge at the bottom of the discharging barrel; be connected with right rear on the opening of play feed cylinder and buckle, and be used for drawing the material extremely side fin in the second blown down tank structure, the second blown down tank structure has the recess of orientation around the both ends mouth, the back end fixing of recess has the separation blade that is used for this tip of shutoff, the right groove wall of recess is higher than left cell wall, the left side edge of the horizontal piece of first blown down tank structure has and strides across the left cell wall of recess and stretch into kink in the recess, the horizontal piece of first blown down tank structure with interval has between the recess.

3. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 2, which is characterized in that: the bottom center of play feed cylinder arches upwards, be provided with and erect in the bottom of play feed cylinder, and above-mentioned vertical piece is connected and is extended to the material piece that separates of bottom center department, be provided with the fender piece that is used for adjusting above-mentioned opening size on the play feed cylinder, all be provided with a plurality of on the left and right sides outer wall of opening part on the play feed cylinder on to the overhead eave tile or the projection that equidistant side by side in vertical direction, it connects on the homonymy to be provided with on the fender piece on eave tile or the projection to spacing the fixing of fender piece is in the elastic webbing on the play feed cylinder, the both ends of elastic webbing are fixed keep off the piece on and be the annular, or one end is fixed on the elastic webbing keep off the piece, and has seted up a plurality of confessions along its length direction equidistant the button hole that eave tile or projection passed.

4. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 1, which is characterized in that: the weighing device is installed in the box body and comprises an installation frame, a first stepping motor, an infrared sensor, an eccentric wheel disc, a weighing sensor, a square weighing hopper and a lower sealing cover which is movably hinged with the left side wall and the right side wall of the weighing hopper and used for sealing a lower port of the weighing hopper, the installation frame is horizontally arranged horizontally and fixed on the box body, the weighing hopper is positioned at the front side of the installation frame, the weighing sensor is in a long strip shape and positioned between the installation frame and the weighing hopper, the weighing hopper is hung and installed on the installation frame through the weighing sensor, the lower sealing cover is provided with an arc-shaped sheet, a left connecting plate and a right connecting plate which are correspondingly connected to the left side and the right side of the arc-shaped sheet, the left connecting plate is provided with a horizontal connecting rod, a bearing is sleeved on the connecting rod, and the first stepping motor is horizontally arranged and, the power output shaft of the first stepping motor extends out of the left side wall of the weighing hopper, the bearing rolls and rubs on the outer periphery of the eccentric wheel disc to drive the lower sealing cover to open the lower port of the weighing hopper, the bearing is fixedly mounted on the power output shaft of the first stepping motor once and drives the lower sealing cover to swing upwards to open the lower port of the weighing hopper, the weighing hopper is provided with an infrared sensor which is arranged side by side with the first stepping motor, and the eccentric wheel disc is provided with a limiting hole for limiting the rotation of the eccentric wheel disc by one circle.

5. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 4, which is characterized in that: the front edge of the upper port of the weighing hopper and the edge of the left side are connected with an outer edge piece which is expanded outwards and is convenient for better accepting the discharge of the front end of the first discharging groove structure and the second discharging groove structure, the upper port of the weighing hopper is provided with an extending part which extends straightly to the mounting frame, the mounting frame is provided with a bolt which is vertically arranged and the upper end part of the bolt is used for pushing against the extending part of the weighing hopper, the lower surface of the extending part of the weighing hopper plays a limiting role and avoids the weighing hopper to swing under excessive stress.

6. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 3, which is characterized in that: the material turning device comprises a second stepping motor and a shaft rod detachably connected to an output shaft of the second stepping motor, the helical blades are fixedly arranged on the outer surface of the shaft rod, a cross beam which is horizontally arranged and two ends of which are fixedly connected with the inner wall of the first tapered hopper is arranged in the first tapered hopper, the second stepping motor is fixedly installed on the cross beam, the output shaft of the second stepping motor faces downwards vertically, and the lower end part of the shaft rod extends into the discharging barrel through a lower port of the second tapered hopper.

7. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 6, which is characterized in that: be provided with one on the bottom of play feed cylinder and erect, and be in screw rod on the bottom center of play feed cylinder, fixed mounting has the lower charging tray that is umbrella-type and opening down on the screw rod, the outward flange of charging tray is in down outside the lower port part of second toper hopper, down the charging tray with the lower port of second toper hopper with down the charging tray with all have the interval that supplies tealeaves to pass through between the inner wall of play feed cylinder.

8. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 1, which is characterized in that: a first sensor for sensing tea leaves in the first conical hopper is arranged in the box body, a limiting hole penetrating through the inner wall and the outer wall of the first conical hopper is formed in the first conical hopper, a transparent sheet for plugging the limiting hole is arranged on the inner wall of the conical hopper, and the sensing end of the first sensor faces the transparent sheet and penetrates through the transparent sheet sensor to sense the tea leaves in the first conical hopper; a second sensor for discharging of the discharging hopper is mounted on the box body, and the sensing end of the second sensor faces the lower end of the discharging hopper; a controller is installed in the box body, a touch screen control panel is installed on the front portion of the box body and is in bidirectional electric control connection with the controller, the first sensor and the second sensor are respectively and electrically connected with the corresponding output end of the controller, the vibration main body A and the vibration main body B are respectively connected with the corresponding output end of the controller, and the weighing device and the material turning device are in electric control connection with the controller; the automatic feeding device is characterized by further comprising a foot switch which is arranged outside the box body and used for manually controlling the feeding of the weighing device, and the foot switch is electrically connected with the controller.

9. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 1 or 8, which is characterized in that: offer the viewing aperture of conveniently observing tealeaves unloading condition on the box, it has a transparent to correspond the activity of viewing aperture department on the box and articulate to be used for the board of sealing of shutoff viewing aperture, it is relative with the board junction that seals to be provided with on the box to the connection piece in the straight access viewing aperture, the device has permanent magnet on the connection piece, seal be provided with on the board and permanent magnet between through magnetic attraction's magnet piece or metal block.

10. The precision blanking racking machine suitable for the strip-shaped and block-shaped materials clamped and bridged according to claim 9, which is characterized in that: the box is internally provided with a partition board which divides the internal space of the box into an upper area and a lower area which are independent, the first conical hopper, the vibration blanking device and the weighing device are arranged in the upper area, the discharge hopper is communicated with the upper area, the position on the partition board corresponding to the vibration main body A is provided with an air inlet hole for supplying air to the lower area, a fan for air suction and impurity removal is arranged on the partition board corresponding to the air inlet hole, and the fan is in control connection with the controller.