CN218967334U

CN218967334U - Double-bin circulating feeder

Info

Publication number: CN218967334U
Application number: CN202320084644.8U
Authority: CN
Inventors: 白宇; 王佳佳; 贾铁柱; 刘英杰; 张明彦; 陈静; 王建敏; 李红平; 王灏宸
Original assignee: Shanxi Yunzheng Printing Factory
Current assignee: Shanxi Yunzheng Printing Factory
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-05-05
Anticipated expiration: 2033-01-29

Abstract

The utility model belongs to the technical field of object packaging equipment, and discloses a double-bin circulating feeder. The feeding machine collects information about the existence of the flexible packaging bag through a first infrared sensor, uploads the information to a controller in an electrical control cabinet, and controls the operation of an electric push rod to realize double-bin circulating feeding operation by controlling and executing a switching instruction through the electrical control cabinet; meanwhile, the worm wheel screw lifter is driven by the screw driving motor in the two bins to achieve lifting of the material plate and pick up the flexible packaging bag by matching with the negative pressure sucker mechanism to reduce the movement stroke and movement amplitude of the flexible packaging bag, so that the problem that the test paper bag deforms or is adsorbed to fall off too little is solved. In addition, the utility model is provided with a second infrared sensor for acquiring whether the flexible packaging bag reaches the preset position information and uploading the information to a controller in the electrical control cabinet, and the electrical control cabinet controls the electromagnetic valve to close the air pipe line by executing the release instruction so as to realize the accurate release of the flexible packaging bag.

Description

Double-bin circulating feeder

Technical Field

The utility model belongs to the technical field of object packaging equipment, and particularly relates to a double-bin circulating feeder.

Background

At present, sheet-shaped packaging articles such as paper or cards are filled into flexible packaging bags in two modes, one mode is that traditional manual bagging is adopted, the bagging mode is time-consuming and labor-consuming, the bagging quality is uneven easily due to mistakes, and a sampling quality inspection process is added to ensure the bagging quality; the other is to adopt bagging equipment to mechanically pack bags, wherein the common mode in the flexible packaging bag feeding process is that the flexible packaging bag is picked up by a negative pressure sucker through a material belt and is transmitted to a transfer belt to carry out the subsequent bagging process, and the operation of the material belt, the transfer belt and the negative pressure sucker is required to be kept highly uniform in the flexible packaging bag feeding process, and if any link is in a problem, the whole flexible packaging bag feeding assembly line is paralyzed.

Aiming at the bagging equipment, the utility model patent with the search notice number of CN211337916U discloses an automatic feeding device for sealing a test paper bag. The automatic feeding device for sealing the test paper bags drives the sucking disc to move up and down through the pneumatic cylinder which is vertically arranged, so that the test paper bags transmitted from the previous procedure are sucked, the guide rail drives the sucked test paper bags to be transmitted to the conveyor belt of the next procedure through the driving movement of the pneumatic cylinder, and the whole process is realized through a pneumatic control mode.

However, the feeding device still has the following two defects: firstly, the test paper absorbed by the bag taking and transporting mode not only needs to move up and down, but also needs to move transversely in the direction of a transporting belt, and as the test paper bag is absorbed and picked up by virtue of negative pressure of a sucker, in the transporting process, the movement stroke and the movement amplitude are larger, if the absorption force of the sucker is too small, the test paper bag is extremely easy to fall due to shaking caused by stroke change, and if the absorption force is too large, the test paper bag is deformed to influence the subsequent bagging process; secondly, the feeding of test paper bags is completed under the assistance of a conveyor belt, so that the problem of connection and matching of the absorption and the conveyor belt exists, and the whole feeding normal operation is influenced once the conveyor belt fails.

Therefore, for the problem existing in the current flexible packaging bag feeding, the automatic feeding device for the sealing of the test paper bag has the invisible risk of running errors, and the phenomenon that the flexible packaging bag falls off or deforms easily occurs in the transportation process of the adsorption test paper bag.

Disclosure of Invention

Aiming at the problems of running risk and poor transportation quality of the existing flexible packaging bag feeding equipment in the background technology, the utility model designs and provides a double-bin circulating feeder.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the utility model provides a two storehouse formula endless feeder, is including installing the frame and installing the drive bracket on its top install sideslip actuating mechanism on the drive bracket install negative pressure sucking disc mechanism on the sideslip actuating mechanism, negative pressure sucking disc mechanism is connected and is provided required negative pressure power for it through the pneumatic tube line be provided with the solenoid valve that is connected with the electrical control cabinet on the pneumatic tube line, the solenoid valve is used for control negative pressure sucking disc mechanism pneumatic tube line's break-make to this realizes the absorption pick-up or the release of flexible encapsulation bag install the slip chassis on the lower extreme of installing the frame install electric putter jointly through two sliding guide on the slip chassis be provided with the feed bin chassis through two push rod support electric putter be provided with the linkage block on the feed bin chassis and with electric putter's piston rod tip is connected install the side machine box body respectively on the both ends of feed bin and install the linkage block and two respectively between the side box the infrared machine box is provided with independent lift respectively on the two electric control bin sensor carries out the two on the electric control bin sensor carries out the flexible control bag and carries out the flexible control bag on the two and carries out the flexible control bag and carries out the sensor on the flexible control bag.

As further explanation and limitation of the technical scheme, the two bins are identical in structure and comprise supporting bottom plates fixedly installed between the connecting support and the side machine box body, four guide slide bars are installed on each supporting bottom plate, a material plate is arranged on each guide slide bar in a sliding mode, the first infrared sensor is installed on the material plate, four guide holes are formed in the material plate corresponding to the four guide slide bars, a plurality of blocking pieces are installed on each material plate and are used for blocking and preventing flexible packaging bags from falling, and an electric screw driving mechanism is installed between the bin underframe and each supporting bottom plate and used for driving the material plate to lift.

As further explanation and limitation of the above technical solution, the electric screw driving mechanism includes a worm screw lifter installed on the supporting base plate, the worm screw lifter is driven by a screw driving motor, the screw driving motor is installed on the bin underframe, a screw hole is provided on the material plate corresponding to the screw of the worm screw lifter, the material plate is driven by the screw driving motor to move up and down through the transmission of the worm screw lifter, and is matched with the negative pressure sucker mechanism to absorb and pick up the flexible packaging bag.

As further explanation and limitation of the technical scheme, the transverse moving driving mechanism comprises a first stepping motor and a second stepping motor which are respectively arranged on the front side and the rear side of the driving support, the first stepping motor and the second stepping motor are driven by an internal tooth belt, a guide sliding block and a suspension arm are respectively arranged on the internal tooth belt by a driving block, a guide sliding rail corresponding to the guide sliding block is arranged on the driving support, the negative pressure sucker mechanism is arranged on the end part of the suspension arm, and the first stepping motor and the second stepping motor are respectively electrically connected with an electrical control cabinet and drive the negative pressure sucker mechanism to realize transverse movement by synchronously driving the internal tooth belt.

As further explanation and limitation of the technical scheme, the negative pressure sucker mechanism comprises an electric cylinder arranged on the suspension arm, a movable bottom plate is fixedly connected to the end part of a piston rod of the electric cylinder through a mounting plate, a plurality of suckers are arranged on the movable bottom plate in an array mode, and the suckers are connected with the air compressor through air pipe lines.

As a further supplementary explanation of the above technical scheme, an adjusting screw plate is mounted on the suspension arm, a limit bolt corresponding to the movable bottom plate is arranged on the adjusting screw plate, and the limit bolt is used for adjusting the up-and-down movement stroke of the movable bottom plate.

As a further supplementary explanation of the technical scheme, the mounting machine frame is provided with a supporting support, a supporting screw corresponding to the connecting stop block is arranged on the supporting support, and the supporting screw is used for limiting the transverse moving distance of the mounting machine frame, so that the feeding positions of the two bins are adjusted.

As a further supplementary explanation of the technical scheme, two side plates are installed on each supporting bottom plate, a limiting slide rod is fixedly connected between the two side plates, two adjusting baffles are arranged on the limiting slide rod in a sliding mode, an adjusting screw is arranged between the two adjusting baffles and installed on the box body of the side machine through ball bearings, bearing installation holes with the ball bearings are formed in the box body of the side machine, adjusting slotted holes are formed in the material plate corresponding to the two side plates respectively, and the two side plates are made to be close to or far away from each other in a synchronous mode through rotation of the adjusting screw, so that the size of the flexible packaging bag contained on the material plate is adjusted.

As a further supplementary explanation of the above technical scheme, a second infrared sensor connected with the controller is installed on the driving support, the second infrared sensor is used for collecting whether the flexible packaging bag reaches the preset position information, and the electromagnetic valve is controlled to close the air pipe line by executing a release instruction sent by the controller through the electrical control cabinet, so that the flexible packaging bag is accurately released.

Compared with the existing test paper bag feeding device, the utility model has the following advantages:

1. in the design of the flexible packaging bags for absorbing, picking and transporting by the negative pressure sucker mechanism, the original continuous feeding operation mode of the conveyor belt is modified into double-bin circulation to perform feeding operation, meanwhile, the first infrared sensors are respectively arranged on the double bins, the first infrared sensors upload the information of whether the test paper on the collected bin is transmitted to the controller in the electric control cabinet, and then the electric control cabinet controls the electric push rod to drive and operate through the bin switching instruction sent by the execution controller to realize the switching between the double bins, so that the feeding design can reduce the process of connecting and matching the flexible packaging bags with the negative pressure sucker in the transfer belt and the material belt, and the risk of error of the whole feeding operation caused by non-uniform coordination and matching is avoided.

2. According to the utility model, the double bins are designed into the material plates which move up and down, and the worm wheel screw lifter is driven by the screw driving motor to realize lifting of the material plates to pick up the flexible packaging bag by matching with the negative pressure sucker mechanism, so that the movement stroke and the movement amplitude of the flexible packaging bag are reduced, and the problem that the flexible packaging bag is deformed or excessively small in absorption and falls down is solved.

3. According to the utility model, the two movable adjusting baffles are arranged on the material plate, and the two side plates are synchronously moved towards each other or away from each other by rotating the adjusting screw, so that the purpose of adjusting the size of the flexible packaging bag is achieved, and meanwhile, the design of the blocking piece is added on the material plate, so that the flexible packaging bag is prevented from falling.

4. The utility model adds the second infrared sensor to acquire whether the flexible packaging bag reaches the preset position information and upload the information to the controller in the electrical control cabinet, and then the electrical control cabinet executes the release instruction sent by the controller to control the electromagnetic valve to close the pipeline of the air pipe, thereby realizing the accurate release of the flexible packaging bag.

Drawings

FIG. 1 is a perspective view of an embodiment of the present utility model;

FIG. 2 is an assembly view of an embodiment of the present utility model;

FIG. 3 is an exploded view of an embodiment of the present utility model

FIG. 4 is an assembly view of a traversing drive mechanism, a negative pressure suction cup mechanism, and a drive bracket in an embodiment of the present utility model;

fig. 5 is an enlarged view of a portion a in fig. 4.

In the figure: the installation frame 1 is that the driving support is 2, the sliding underframe is 4, the sliding guide is 5, the bin underframe is 6, the connection support is 7, the side machine box is 8, the supporting bottom plate is 9, the guide slide bar is 10, the material plate is 11, the screw rod driving motor is 12, the worm wheel screw rod lifter is 13, the guide hole is 14, the screw hole is 15, the side plate is 16, the limit slide bar is 17, the adjusting baffle is 18, the adjusting slot hole is 19, the adjusting screw is 20, the first infrared sensor is 21, the second infrared sensor is 22, the push rod support is 23, the electric putter is 24, the piston rod is 25, the connection stop block is 26, the blocking piece is 27, the bearing mounting hole is 28, the abutting support is 29, the abutting screw rod is 30, the sideslip driving mechanism is 31, and the negative pressure sucking disc mechanism is 32.

The transverse moving driving mechanism comprises a first stepping motor 3101, a second stepping motor 3102, an internal tooth belt 3103, a driving block 3104, a guide sliding block 3105, a guide sliding rail 3106 and a suspension arm 3107.

The negative pressure sucking disc mechanism comprises an electric cylinder 3201, a mounting plate 3202, a movable bottom plate 3203, a sucking disc 3204, an adjusting screw plate 3205 and a limiting bolt 3206.

Detailed Description

In order to further illustrate the technical solution of the present utility model, the present utility model will be further described in detail by three examples with reference to fig. 1 to 5.

In a first embodiment, as shown in fig. 1 to 5, a feeder with double-bin circulation includes a mounting frame 1, and a driving support 2 mounted on the top end of the mounting frame 1, a traversing driving mechanism 31 mounted on the driving support 2, a negative pressure suction cup mechanism 32 mounted on the traversing driving mechanism 31, the negative pressure suction cup mechanism 32 connected with an air compressor through an air pipe line and providing required negative pressure power for the air compressor, an electromagnetic valve connected with an electrical control cabinet and arranged on the air pipe line, the electromagnetic valve is used for controlling on-off of the air pipe line of the negative pressure suction cup mechanism 32, so as to realize adsorption picking or release of flexible sealing bags, a sliding chassis 4 is mounted on the lower end of the mounting frame 1, a bin chassis 6 is slidingly mounted on the sliding chassis 4 through two sliding guide rails 5, an electric push rod 24 is mounted on the mounting frame 1 together through two push rod supports 23, a connection stop 26 is arranged on the bin chassis 6 and connected with the end of the air compressor, two ends of the bin chassis 24 are respectively mounted on two ends 8 of the bin chassis 6, and a lifting bracket 7 is mounted on two sides 7 and a lifting bracket 8 is mounted between the two independent brackets 8 and the lifting bracket 8. A first infrared sensor 21 is arranged on each bin, a second infrared sensor 22 connected with the controller is arranged on the driving support 2, the two first infrared sensors 21 are used for collecting information about the existence of the flexible packaging bags and uploading the information to the controller in the electrical control cabinet, and the electrical control cabinet controls the electric push rod 24 to drive the bin underframe 6 to transversely move through executing a bin switching instruction sent by the controller, so that the switching between the two bins is accurately and orderly controlled to realize the cyclic feeding operation of the flexible packaging bags; the second infrared sensor 22 is used for acquiring whether the flexible packaging bag reaches the preset position information or not, and the electromagnetic valve is controlled to close the air pipe line by the release instruction sent by the execution controller of the electrical control cabinet, so that the flexible packaging bag can be accurately released.

Preferably, as a further implementation manner of the above embodiment, the two bins have the same structure and each comprise a supporting bottom plate 9 fixedly installed between the connecting bracket 7 and the side machine box 8, four guide sliding rods 10 are installed on each supporting bottom plate 9, a material plate 11 is slidably arranged on each guide sliding rod 10, a first infrared sensor 21 is installed on each material plate 11, four guide holes 14 are formed in each material plate 11 corresponding to the four guide sliding rods 10, a plurality of blocking pieces 27 are installed on each material plate 11 and are commonly used for blocking dropping of flexible sealing bags, an electric screw rod driving mechanism is installed between each bin underframe 6 and each supporting bottom plate 9, each electric screw rod driving mechanism comprises a screw rod lifter 13 installed on the supporting bottom plate 9, each screw rod lifter 13 is driven by a screw rod driving motor 12, each screw rod driving motor 12 is installed on each bin 6, a screw rod lifter 13 corresponding to the screw rod lifter 13 is provided with a screw rod driving mechanism, and the screw rod lifter 13 is matched with a suction cup to realize suction cup 32.

Preferably, as a further implementation manner of the above embodiment, the traverse driving mechanism 31 includes a first stepping motor 3101 and a second stepping motor 3102 respectively installed on front and rear sides of the driving support 2, the first stepping motor 3101 and the second stepping motor 3102 are driven by an internal tooth belt 3103, a guide slider 3105 and a boom 3107 are respectively installed on the internal tooth belt 3103 through a driving block 3104, a guide sliding rail 3106 corresponding to the guide slider 3105 is installed on the driving support 2, the negative pressure suction cup mechanism 32 is installed on an end portion of the boom 3107, the negative pressure suction cup mechanism 32 includes an electric cylinder 3201 installed on the boom 3107, a piston rod end portion of the electric cylinder 3201 is fixedly connected with a movable bottom plate 3203 through a mounting plate 3202, a plurality of suction cups 3204 are installed on the movable bottom plate 3203, a plurality of suction cups 3204 are driven to be arranged in an array, and are connected with the air compressor through air pipe lines, an adjusting plate 3205 is installed on the boom 7, a screw hole is installed on the adjusting plate 3205, and the adjusting plate 3205 is arranged on the adjusting plate 3203 and is electrically connected with the movable bottom plate 3203 through a second bottom plate 3203, and the movable bottom plate 3203 is electrically connected with the movable bottom plate 3203 through a spacing bolt, and the movable bottom plate 3203 is electrically and the movable bottom plate is connected with the movable bottom plate 3103.

In the second embodiment, in order to meet the feeding requirements of packaging bags with different sizes. In the first embodiment, two side plates 16 are installed on each supporting bottom plate 9, a limit sliding rod 17 is fixedly connected between the two side plates 16, two adjusting baffles 18 are slidably arranged on the limit sliding rod 17, an adjusting screw 20 is arranged between the two adjusting baffles 18, the adjusting screw 20 is installed on the side machine box 8 through a ball bearing, bearing installation holes 28 with the ball bearing are formed in the side machine box 8, adjusting slotted holes 19 are respectively formed in the material plate 11 corresponding to the two side plates 16, and the adjusting screw 20 enables the two side plates 16 to be close to each other or far away from each other synchronously through rotation, so that the size of the flexible packaging bag contained in the material plate 11 is adjusted.

In the third embodiment, in the first or second embodiment, in order to conveniently adjust the movable range of the two bins below the negative pressure sucker mechanism, the effectiveness of absorbing and picking up the flexible packaging bags with different sizes is further matched, so that the flexible packaging bags are prevented from being deformed or being excessively small in absorption and falling. The installation frame 1 is provided with a supporting support 29, a supporting screw 30 corresponding to the connecting stop block 26 is arranged on the supporting support, and the supporting screw 30 is used for limiting the transverse moving distance of the installation frame 1, so that the feeding positions of the two bins are adjusted.

The operation mode and the working principle of the feeder are as follows:

before the device is used, an air compressor is started to work for a period of time, then the negative pressure requirement required by the work is met, and then a screw rod driving motor 12 drives a worm wheel screw rod lifter 13 to lift a material plate 11 of one bin, so that flexible packaging bags piled on the material plate 11 are close to a sucker 3204 on a movable bottom plate 3203; then, an electromagnetic valve controlled by an electrical control cabinet opens a gas pipeline, and the flexible packaging bags are adsorbed and picked up by utilizing a plurality of sucking discs 3204 of the array; then, the electrical control cabinet controls the first stepping motor 3101 and the second stepping motor 3102 to synchronously operate so as to transfer the flexible packaging bag from the upper part of the material plate 11 to the conveying belt of the next bagging process, and when the second infrared sensor 22 detects that the flexible packaging bag passes, the electrical control cabinet controls the electromagnetic valve to close the air pipe line, and the flexible packaging bag is released onto the conveying belt of the bagging process under the gravity of the flexible packaging bag.

When the first infrared sensor 21 collects that the material plate 11 of one bin does not have a flexible packaging bag, the electric control cabinet executes a bin switching instruction to control the electric push rod 24 to enable the piston rod 25 to be telescopically switched to the material plate 11 of the other bin, flexible packaging bag feeding operation is continued, and then a field worker supplements the empty bin, so that the feeder reciprocates, and uninterrupted assembly line operation is realized.

While the principal features and advantages of the present utility model have been shown and described, it will be apparent to those skilled in the art that the detailed description of the utility model is not limited to the details of the foregoing exemplary embodiments, but is capable of other embodiments without departing from the spirit or essential characteristics of the utility model, and the inventive concept and design concept of the utility model shall be equally included in the scope of the utility model disclosed in the appended claims. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present disclosure describes embodiments, not every embodiment is provided with a separate embodiment, and that this description is provided for clarity only, and that the disclosure is not limited to the embodiments described in detail below, and that the embodiments described in the examples may be combined as appropriate to form other embodiments that will be apparent to those skilled in the art.

Claims

1. The utility model provides a two storehouse circulations feeder, is including installing frame (1) and installing drive bracket (2) on its top install sideslip actuating mechanism (31) on drive bracket (2) install negative pressure sucking disc mechanism (32) on sideslip actuating mechanism (31), negative pressure sucking disc mechanism (32) are connected and are provided required negative pressure power for it through the gas pipe line with air compressor be provided with the solenoid valve that is connected with the electrical control cabinet on the gas pipe line, the solenoid valve is used for control the break-make of negative pressure sucking disc mechanism (32) gas pipe line to this realizes the absorption pick-up or release of flexible encapsulation bag, its characterized in that: install on the lower extreme of installing frame (1) slip chassis (4) slip through two slide rail (5) is provided with feed bin chassis (6) on slip chassis (4) install electric putter (24) jointly through two push rod supports (23) on installing frame (1) be provided with on feed bin chassis (6) and connect dog (26) and with piston rod (25) tip of electric putter (24) install side machine box (8) respectively on the both ends of feed bin chassis (6) and install linking bridge (7) in its middle part link up and be provided with the feed bin that independently goes up and down respectively between support (7) and the two side machine box (8) all install first infrared sensor (21) on every feed bin, two first infrared sensor (21) all are used for gathering flexible encapsulation bag and upload to on the controller in the electric control bin, electric control bin carries out the electric control command that the electric control bin sent through the cabinet controller and carries out and order to realize that flexible transport is carried out this flexible bag is carried out on two to change over between the feed bin (6) in order.

2. A dual-bin circulating feeder as claimed in claim 1, wherein: the structure of two feed bins is the same, and all including fixed mounting link up supporting baseplate (9) between support (7) and side machine box (8), every install four guide slide bars (10) on supporting baseplate (9), four guide slide bars (10) are gone up and are slided together and are provided with flitch (11), first infrared sensor (21) are installed on flitch (11) correspond four on flitch (11) four guiding holes (14) have been seted up to guide slide bars (10), every install a plurality of stoppers (27) on flitch (11), it is used for jointly preventing dropping of flexible encapsulation bag install electronic lead screw actuating mechanism between feed bin (6) and every supporting baseplate (9), electronic lead screw actuating mechanism is used for driving the lift of flitch (11).

3. A dual bin cycle feeder as claimed in claim 2 wherein: the electric screw rod driving mechanism comprises a worm wheel screw rod lifter (13) arranged on the supporting bottom plate (9), the worm wheel screw rod lifter (13) is driven by a screw rod driving motor (12), the screw rod driving motor (12) is arranged on the bin underframe (6), a screw hole (15) is formed in the material plate (11) corresponding to the screw rod of the worm wheel screw rod lifter (13), and the material plate (11) is driven by the screw rod driving motor (12) to move up and down through the transmission of the worm wheel screw rod lifter (13) and matched with the negative pressure sucker mechanism (32) to absorb and pick up flexible packaging bags.

4. A double-bin circulating feeder according to any one of claims 1 to 3, wherein: the transverse moving driving mechanism (31) comprises a first stepping motor (3101) and a second stepping motor (3102) which are respectively arranged on the front side and the rear side of the driving support (2), the first stepping motor (3101) and the second stepping motor (3102) are in transmission through an internal tooth belt (3103), a guide sliding block (3105) and a suspension arm (3107) are respectively arranged on the internal tooth belt (3103) through a driving block (3104), a guide sliding rail (3106) corresponding to the guide sliding block (3105) is arranged on the driving support (2), the negative pressure sucking disc mechanism (32) is arranged on the end part of the suspension arm (3107), and the first stepping motor (3101) and the second stepping motor (3102) are respectively and electrically connected with an electric control cabinet and drive the negative pressure sucking disc mechanism (32) to realize transverse movement through synchronous transmission of the internal tooth belt (3103).

5. The dual-bin circulating feeder of claim 4, wherein: negative pressure sucking disc mechanism (32) is including installing electric cylinder (3201) on davit (3107), piston rod tip of electric cylinder (3201) is through mounting panel (3202) fixedly connected with movable bottom plate (3203) install a plurality of sucking discs (3204) on movable bottom plate (3203), a plurality of sucking discs (3204) are the array and arrange, and all pass through the tracheal circuit with air compressor is connected.

6. The dual-bin circulating feeder of claim 5, wherein: an adjusting screw plate (3205) is arranged on the suspension arm (3107), a limiting bolt (3206) corresponding to the movable bottom plate (3203) is arranged on the adjusting screw plate (3205), and the limiting bolt (3206) is used for adjusting the up-and-down movement stroke of the movable bottom plate (3203).

7. The dual-bin circulating feeder of claim 6, wherein: install conflict support (29) on installing frame (1), be provided with on it with the corresponding conflict screw rod (30) of connection dog (26), conflict screw rod (30) are used for limiting the distance of installing frame (1) lateral shifting, and then adjust the feed position of two feed bins.

8. A double-bin circulating feeder according to any one of claims 2 to 3 or 5 to 7, wherein: install two curb plates (16) on every supporting baseplate (9), two fixedly connected with spacing slide bar (17) between curb plate (16) spacing slide bar (17) are gone up to slide and are provided with two regulation baffle (18), are provided with adjusting screw (20) between two regulation baffle (18), adjusting screw (20) are installed on side machine box (8) through ball bearing set up on side machine box (8) with ball bearing's bearing mounting hole (28), corresponding two on flitch (11) regulation slotted hole (19) have been seted up respectively to curb plate (16), adjusting screw (20) make two curb plate (16) are close to in opposite directions in step or keep away from through the rotation to this is adjusted hold flexible encapsulation bag's size on flitch (11).

9. The dual-bin circulating feeder of claim 8, wherein: the driving support (2) is provided with a second infrared sensor (22) connected with the controller, the second infrared sensor (22) is used for collecting whether the flexible packaging bag reaches preset position information or not, and the electromagnetic valve is controlled to close the air pipe line by executing a release instruction sent by the controller through the electrical control cabinet, so that the flexible packaging bag is accurately released.