A high-speed small-package flour centralized packaging device and its working method

Abstract

The present invention provides a high-speed small-package flour centralized packaging device and a working method thereof. A bag feeding conveyor belt is arranged at one end of the frame, and a first bag pushing structure and a second bag pushing structure are arranged on one side of the conveyor belt; a first temporary storage platform and a second temporary storage platform are arranged on the other side; a lifting platform is provided in the middle of the two temporary storage platforms; a pull plate cylinder is fixed on the upper frame of the temporary storage platform and the lifting platform, and the pull plate cylinder is connected to one of the pull plates; after the lifting platform is lowered into place, a third bag pushing structure is installed at the rear end of the lifting platform; the front end is a bag outlet. When the first bag pushing structure and the second bag pushing structure are working, they are alternately operated, closely connected with the working process of the lifting platform, and the production efficiency is improved; the two pull plates are connected by a crossbeam, and after the small-package flour bags in the first temporary storage platform are scraped to the lifting platform, the small-package flour bags in the second temporary storage platform are scraped to the lifting platform, and the work is repeated back and forth to improve the work efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of flour packaging devices, and in particular to a high-speed small-package flour centralized packaging device and a working method thereof. Background Art

[0002] The inventor has applied to the State Intellectual Property Office for two utility model patents on small-package flour centralized packaging devices, namely CN201620417422-A flour small package collection device and CN201721274622-A small-package flour centralized packaging device. The devices recorded in the two patent documents have been transformed into actual products and have achieved very good results.

[0003] In the field of flour production technology, the device structure has been innovating to make production more efficient. Summary of the invention

[0004] The invention provides a high-speed small-package flour centralized packaging device to achieve the purpose of improving packaging production efficiency.

[0005] At the same time, the present invention also provides a working method of the above-mentioned small-package flour centralized packaging device.

[0006] A high-speed small-package flour centralized packaging device comprises a frame, characterized in that a bag-feeding conveyor belt is arranged at one end of the frame, and a first bag-pushing structure and a second bag-pushing structure are arranged on one side of the conveyor belt; a first temporary storage platform and a second temporary storage platform are arranged on the other side; the far end of the conveyor belt running direction is the first bag-pushing structure, and the near end is the second bag-pushing structure; a first in-place signal switch and a second in-place signal switch are respectively installed corresponding to the first bag-pushing structure and the second bag-pushing structure; the front end of the action end of the first bag-pushing structure and the second bag-pushing structure are connected with the conveyor belt to form the first temporary storage platform and the second temporary storage platform; the middle position of the two temporary storage platforms is a lifting platform, and a lifting cylinder is connected under the lifting platform; corresponding to the lowering position and the rising position of the lifting platform, a lowering signal switch and a rising signal switch are respectively installed on the frame;

[0007] A plate pulling cylinder is fixed on the upper end frame of the temporary storage platform and the lifting platform. The plate pulling cylinder includes two plates, namely a left plate pulling plate and a right plate pulling plate, which are connected by a crossbeam in the middle. The plate pulling cylinder is connected to one of the plates; and the distance between the two plates is the width of a temporary storage platform and the lifting platform added together;

[0008] After the lifting platform is lowered into place, a third bag pushing structure is installed at the rear end of the lifting platform; the front end of the lifting platform after it is lowered into place is the bag outlet; a bag supporting structure is installed at the bag outlet; the bag supporting structure includes an outer supporting plate and an inner supporting plate; the inner supporting plate is connected to a bag supporting cylinder so that the inner supporting plate is movably fixed at the lower end of the bag outlet, and the solenoid valve connected to the bag supporting cylinder is controlled by a foot switch.

[0009] Preferably, anti-blocking bag signal switches are also installed corresponding to the first bag pushing structure and the second bag pushing structure, which are the first anti-blocking bag signal switch and the second anti-blocking bag signal switch respectively; the first in-place signal switch and the second in-place signal switch and the first anti-blocking bag signal switch and the second anti-blocking bag signal switch are diffuse reflection photoelectric switches respectively.

[0010] Preferably, a baffle is installed between the second temporary storage platform and the lifting platform. The baffle is installed on the upper frame through a hinge, and a baffle cylinder is also fixed on the frame, and the actuating end of the baffle cylinder is connected to the baffle.

[0011] Preferably, in-position signal switches are respectively fixed at two fixed positions of the baffle.

[0012] Preferably, the first bag pushing structure, the second bag pushing structure and the third bag pushing structure are of the same structure, and each group of bag pushing structures respectively includes a bag pushing cylinder, a pushing plate is connected to the action end of the bag pushing cylinder, and in the front and return positions of the piston in the bag pushing cylinder, magnetic switches are respectively arranged on the bag pushing cylinder as a push bag in-position signal switch and a push bag return signal switch; the first in-position signal switch is installed on the frame above the conveyor belt on the front side of its push plate, and the first anti-blocking bag signal switch is arranged at the front end of the first in-position signal switch, adjacent to the second in-position signal switch; the second in-position signal switch is installed above the conveyor belt on the front side of its push plate, and the second anti-blocking bag signal switch is arranged on the frame at the entrance of the flour packaging bag.

[0013] Preferably, the outer support plate extends downward in an arc shape from the upper end of the bag outlet, and the inner baffle plate also extends downward in an arc shape.

[0014] Preferably, the bag outlet is a mounting plate with an opening, the bag-supporting structure is mounted on the mounting plate, a bag-blowing cylinder is connected to the lower end of the mounting plate, and a track is formed on the frame, and the mounting plate moves within the track.

[0015] A touch screen is installed on the frame, and the touch screen is connected to a PLC controller; a conveyor belt driving motor, a switch solenoid valve of each cylinder and each signal switch are respectively connected to the PLC controller.

[0016] The working method of the above-mentioned small package flour centralized packaging device is characterized by comprising the following steps:

[0017] Step 1: Select the number of small flour bags to be packaged each time on the touch screen, record the number of bags as N, then start the centralized packaging device, put the large packaging bag on the bag support structure, step on the foot switch to control the movement of the bag support cylinder, so that the inner support plate moves to tighten the large packaging bag; at the same time, the lifting platform rises;

[0018] Step 2: After the centralized packaging device is started, the PLC controller controls the conveyor belt motor and the first in-place signal switch to work, and transmits the small package flour bag to the far end of the conveyor belt running direction. After the first in-place signal switch senses that the small package flour bag is in place, it feeds back the signal to the PLC controller. During this process, the conveyor belt keeps running, and the PLC controller controls the cylinder corresponding to the solenoid valve in the first bag pushing structure to work, pushing the small package flour to the first temporary storage platform, and then the cylinder returns to its position. During this process, the push bag in-place signal switch and the push bag return signal switch feed back signals to the PLC controller;

[0019] Step 3: After the number of small-package flour bags sensed by the first arrival signal is N, the number of flour bags stored on the first temporary storage platform is N. The PLC controller transmits a signal to activate the pull plate cylinder, and the pull plate scrapes the small-package flour bags to the lifting platform;

[0020] Step 4: After the plate pulling cylinder is completed, the PLC controls the cylinder of the lifting platform to descend. When it descends to the position, the descending position signal switch transmits a signal to the PLC controller. The PLC controller controls the cylinder in the third bag pushing structure to move, and the small flour bag is pushed from the bag outlet to the large bag. The push bag position signal switch and the push bag return signal switch send signals to the controller. After the push bag returns to the position, the lifting platform rises, and the bagging of a large flour bag is completed. Then, the next large bag is set on the bag supporting structure.

[0021] Step 5: At the same time as step 4, after the pulling plate action is completed, the second signal sensing switch works, and after sensing the small package flour bag, the second bag pushing structure works to push the small package flour bag to the second temporary storage platform; after the second signal sensing switch senses that the number of small package flour bags is N, the PLC controller transmits a signal to activate the pulling plate cylinder, so that the pulling plate scrapes the small package flour bag to the lifting platform; then repeat step 4 to complete the bagging of another large package flour bag, and then put the next large package bag on the bag supporting structure; the production is cyclical.

[0022] Preferably, in step 5, when the second bag pushing structure pushes the small-package flour bag to the second temporary storage platform, when the second signal sensing switch senses the number of the Nth bag of small-package flour or the N-1th bag of small-package flour, the PLC controller activates the baffle cylinder to pull up the baffle. After the baffle is pulled into place, the PLC controller transmits a signal to activate the pulling plate cylinder to make the pulling plate scrape the small-package flour bag to the lifting platform; then repeat step 4 to complete the bagging of another large-package flour bag, and then put the next large packaging bag on the bag supporting structure; and the production is cyclic.

[0023] Preferably, in step 2 and step 5, at the first anti-blocking bag signal and the second anti-blocking bag signal, during the operation of the first bag pushing structure and the second bag pushing structure cylinder, when small package flour bags are sensed, the PLC controller sends a signal to stop the conveyor belt.

[0024] Preferably, in steps 4 and 5, after the lifting platform is raised, the PLC controller controls the bag-blowing cylinder to work, lifts the bag-supporting structure upward, and drives the large packaging bag to move upward, and then the bag-supporting cylinder is activated to release the large packaging bag, completing the bag-blowing operation.

[0025] Beneficial effects of the present invention:

[0026] (1) The first bag pushing structure and the second bag pushing structure work alternately, which is closely connected with the working process of the lifting platform, thereby improving production efficiency;

[0027] (2) Before the first bag pushing structure and the second bag pushing structure, an anti-bag blocking signal switch is installed. When the cylinder action is not completed in the first bag pushing structure and the second bag pushing structure, the small package flour bag will not be transported forward to prevent bag blocking;

[0028] (3) The two pull plates are connected by a crossbeam. After the small-package flour bags are scraped from the first temporary storage platform to the lifting platform, the other pull plate is at the edge of the second temporary storage platform, and then the small-package flour bags in the second temporary storage platform are scraped to the lifting platform. The work is repeated back and forth, thereby improving work efficiency;

[0029] (4) The inner support plate is controlled by a foot switch to support the bag, making the bag support operation time-saving and labor-saving;

[0030] (5) The baffle structure is set to prevent the small package flour bag from being pushed to the lowered lifting platform when the second bag pushing structure pushes the small package flour to the second temporary storage platform;

[0031] (6) The bag-opening cylinder works in conjunction with the bag-supporting structure installed on the mounting plate so that the small packages of flour can be arranged tightly after entering the large package bag, which is convenient for the subsequent bag sealing operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 It is a structural schematic diagram of the present invention;

[0033] Figure 2 This is a schematic diagram of the structure after partially hiding the housing in the present invention;

[0034] Figure 3 This is a schematic diagram of the structure after partially hiding the housing in the present invention;

[0035] Figure 4 This is a schematic diagram of the structure after partially hiding the housing in the present invention;

[0036] Figure 5 This is a schematic diagram of the structure after partially hiding the housing in the present invention;

[0037] Figure 6 This is a schematic diagram of the structure after partially hiding the housing in the present invention;

[0038] Figure 7 This is a schematic diagram of the structure after partially hiding the housing in the present invention;

[0039] Figure 8 It is a structural schematic diagram of the lifting platform and the bag supporting structure in the present invention;

[0040] Fig. 9 It is a structural schematic diagram of the lifting platform and the bag supporting structure in the present invention;

[0041] In the figure: 1. conveyor belt; 2. first bag pushing structure; 3. second bag pushing structure; 3.1. second anti-blocking bag signal switch; 4. first temporary storage platform; 5. second temporary storage platform; 6. lifting platform; 6.1. lifting cylinder; 7. pull plate; 7.1. pull plate cylinder; 7.2. crossbeam; 8. third bag pushing structure; 9.1. outer support plate; 9.2. inner support plate; 9.3. bag support cylinder; 10. baffle; 10.1. baffle cylinder; 11. bag pushing cylinder; 12. push plate; 13. mounting plate; 14. bag blowing cylinder; 15. track; A. touch screen; B. gas distribution box; C. power distribution box; DETAILED DESCRIPTION

[0042] Example 1

[0043] The invention provides a high-speed small-package flour centralized packaging device, comprising a frame, and a casing is packaged on the frame; the characteristics are that a bag feeding conveyor belt 1 is arranged at one end of the frame, and a first bag pushing structure 2 and a second bag pushing structure 3 are arranged on one side of the conveyor belt; a first temporary storage platform 4 and a second temporary storage platform 5 are arranged on the other side; the far end of the running direction of the conveyor belt 1 is the first bag pushing structure 2, and the near end is the second bag pushing structure 3; a first in-place signal switch and a second in-place signal switch 3.1 are respectively installed corresponding to the first bag pushing structure and the second bag pushing structure; the front end of the action end of the first bag pushing structure 2 and the second bag pushing structure 3 are connected with the conveyor belt 1 to form the first temporary storage platform 4 and the second temporary storage platform 5; a lifting platform 6 is located in the middle of the two temporary storage platforms, and a lifting cylinder 6.1 is connected under the lifting platform; corresponding to the descending in-place position and the ascending in-place position of the lifting platform 6, a descending in-place signal switch and an ascending in-place signal switch are respectively installed on the frame; the descending in-place signal switch and the ascending in-place signal switch magnetic switches can be fixed on the frame through a bracket;

[0044] On the upper end frame of the temporary storage platform and the lifting platform 6, a plate pulling cylinder 7.1 is fixed. The plate pulling 7 includes two pieces, namely a left plate pulling and a right plate pulling, which are connected by a crossbeam 7.2 in the middle. The plate pulling cylinder 7.1 is connected to one of the plates 7; and the distance between the two plates is the width of a temporary storage platform and the lifting platform 6 added together; the plate pulling crossbeam 7.2 is on the bracket, and is guided and supported by a guide rail between the bracket and the plate pulling crossbeam 7.2;

[0045] After the lifting platform 6 is lowered to the right position, a third bag pushing structure 8 is installed at the rear end of the lifting platform; the front end of the lifting platform 6 after it is lowered to the right position is the bag outlet; a bag supporting structure is installed at the bag outlet; the bag supporting structure includes an outer supporting plate 9.1 and an inner supporting plate 9.2; the bag outlet is a mounting plate 13 with an opening, the outer supporting plate 9.1 is installed on the mounting plate 13, at the lower end of the mounting plate 13, a bag pushing cylinder 14 is connected, and a track 15 is formed on the frame, and the mounting plate 13 moves in the track 15; the inner supporting plate 9.2 is connected to the bag supporting cylinder 9.3, and the inner supporting plate is movably fixed at the lower end of the bag outlet, and the electromagnetic valve connected to the bag supporting cylinder 9.3 is controlled by a foot switch. The outer supporting plate 9.1 extends downward in an arc shape from the upper end of the bag outlet, and the inner baffle plate 9.2 also extends downward in an arc shape, and the arc formed facilitates the smooth entry of small-package flour bags into large-package flour.

[0046] Anti-blocking bag signal switches are also installed corresponding to the first bag pushing structure 2 and the second bag pushing structure 3, which are the first anti-blocking bag signal switch and the second anti-blocking bag signal switch 3.1 respectively; the first in-place signal switch and the second in-place signal switch and the first anti-blocking bag signal switch and the second anti-blocking bag signal switch 3.1 are diffuse reflection photoelectric switches respectively.

[0047] The first bag pushing structure 2, the second bag pushing structure 3 and the third bag pushing structure 8 are the same, and each group of bag pushing structures includes a bag pushing cylinder 11, and a pushing plate 12 is connected to the action end of the bag pushing cylinder 11; and in the front and back positions of the piston in the bag pushing cylinder, magnetic switches are respectively arranged on the bag pushing cylinder 11 as a bag pushing in position signal switch and a bag pushing return position signal switch; the first in position signal switch is installed on the frame above the conveyor belt on the front side of its pushing plate, and the first anti-blocking bag signal switch is arranged at the front end of the first in position signal switch, adjacent to the second in position signal switch; the second in position signal switch is installed above the conveyor belt on the front side of its pushing plate, and the second anti-blocking bag signal switch 3.1 is arranged on the frame at the entrance of the flour packaging bag.

[0048] A touch screen A is installed on the frame, and the touch screen A is connected to a PLC controller; a power distribution box B and a gas distribution box C are accommodated in the spatial structure of the frame; the conveyor belt drive motor, the switch solenoid valves of each cylinder and each signal switch are respectively connected to the PLC controller.

[0049] Example 2

[0050] On the basis of the structure of Example 1, a baffle 10 is installed between the second temporary storage platform 4 and the lifting platform 6. The baffle 10 is installed on the upper frame through a hinge, and a baffle cylinder 10.1 is also fixed on the frame, and the action end of the baffle cylinder 10.1 is connected to the baffle 10; the fixed position of the baffle 10 is divided into two places, the first place is vertically located between the first temporary storage platform 4 and the lifting platform 6, and the second place is with the hinge as the axis, and is pulled up and fixed by the action of the baffle cylinder 10.1. At the corresponding positions of the two places, in-place signal switches are fixed respectively. The in-place signal switch model is a magnetic switch, which is installed on the frame with a mounting plate.

[0051] Example 3

[0052] The working method of the above-mentioned small package flour centralized packaging device is characterized by comprising the following steps:

[0053] Step 1: After turning on the power, select the number of small flour bags to be packaged each time on the touch screen A, and record the number of bags as N. Then start the centralized packaging device, put the large packaging bag on the bag support structure, step on the foot switch to control the bag support cylinder 9.3 to move, so that the inner support plate 9.2 moves to tighten the large packaging bag; at the same time, the lifting platform 6 rises;

[0054] Step 2: After the centralized packaging device is started, the PLC controller controls the conveyor belt motor and the first in-position signal switch to work, and transmits the small package flour bag to the far end of the running direction of the conveyor belt 1. After the first in-position signal switch senses that the small package flour bag is in position, a feedback signal is sent to the PLC controller. During this process, the conveyor belt keeps running, and the PLC controller controls the corresponding solenoid valve of the bag pushing cylinder 11 in the first bag pushing structure 2 to work, and pushes the small package flour to the first temporary storage platform 4. Then the bag pushing cylinder 11 returns to its position. During this process, the bag pushing in-position signal switch and the bag pushing return signal switch feedback signals to the PLC controller;

[0055] Step 3: After the first arrival signal senses that the number of small-package flour bags is N, the number of flour bags stored on the first temporary storage platform 4 is N, and the PLC controller transmits a signal to activate the pull plate cylinder 7.1, and the pull plate 7 scrapes the small-package flour bags to the lifting platform 6;

[0056] Step 4: After the plate pulling cylinder 7.1 is completed, the PLC controls the lifting platform cylinder to descend. When it descends to the designated position, the descending position signal switch transmits a signal to the PLC controller. The PLC controller controls the bag pushing cylinder 11 in the third bag pushing structure to move, and the small flour bag is pushed from the bag outlet to the large bag. The bag pushing position signal switch and the bag pushing return position signal switch send signals to the controller. After the bag pushing returns to the designated position, the lifting platform 6 rises, and the bagging of a large flour bag is completed. Then, the next large bag is set on the bag supporting structure.

[0057] Step 5: At the same time as step 4, after the pulling plate 7 is completed, the second signal sensing switch works, and after sensing the small package flour bag, the second bag pushing structure 3 works to push the small package flour bag to the second temporary storage platform 5; after the second signal sensing switch senses that the number of small package flour bags is N, the PLC controller transmits a signal to activate the pulling plate cylinder 7.1, so that the pulling plate 7 scrapes the small package flour bag to the lifting platform 6; then repeat step 4 to complete the bagging of another large package flour bag, and then put the next large package bag on the bag supporting structure; the production is cyclic.

[0058] In the steps 2 and 5, at the first anti-blocking bag signal and the second anti-blocking bag signal 3.1, when the cylinders of the first bag pushing structure and the second bag pushing structure sense that there are small packages of flour bags during operation, the PLC controller sends a signal to stop the conveyor belt.

[0059] Example 4

[0060] Based on the steps of Example 3, the difference from the steps of Example 3 is that, in step 5: after the pulling plate 7 is moved, the second signal sensing switch works, and after sensing the small package flour bag, the second bag pushing structure works to push the small package flour bag to the second temporary storage platform 5; when the second signal sensing switch senses the number of the Nth bag of small package flour or the N-1th bag of small package flour, the PLC controller makes the baffle cylinder 10.1 work to pull up the baffle 10, and after the baffle 10 is pulled into place, the PLC controller transmits a signal to make the pulling plate cylinder 7.1 move, so that the pulling plate 7 scrapes the small package flour bag to the lifting platform 6; then repeat step 4 to complete the bagging of another large package flour bag, and then put the next large package bag on the bag supporting structure; and the production is cyclic.

[0061] Example 5

[0062] Based on the steps of Example 3 or Example 4, in Step 4 and Step 5, after the lifting platform 6 is raised, the PLC controller controls the bag-blowing cylinder 14 to work, lifts the bag-supporting structure upward, and drives the large packaging bag to move upward at the same time. Then the bag-supporting cylinder 9.3 is actuated to release the large packaging bag, which instantly plays a bag-blowing role, so that the small packages of flour in the large packaging bag are arranged tightly, which is convenient for the subsequent bag sealing operation.

Claims

1. A high-speed small-package flour centralized packaging device, comprising a frame, characterized in that: A bag feeding conveyor belt is arranged at one end of the frame, and a first bag pushing structure and a second bag pushing structure are arranged on one side of the conveyor belt; A first temporary storage platform and a second temporary storage platform are provided on the other side; The far end of the conveyor belt in the running direction is the first bag pushing structure, and the near end is the second bag pushing structure; A first in-place signal switch and a second in-place signal switch are respectively installed corresponding to the first bag pushing structure and the second bag pushing structure; At the front end of the action end of the first bag pushing structure and the second bag pushing structure, the conveyor belt is connected to form the first temporary storage platform and the second temporary storage platform; the middle position of the two temporary storage platforms is a lifting platform, and a lifting cylinder is connected under the lifting platform; corresponding to the lowering position and the raising position of the lifting platform, a lowering position signal switch and an raising position signal switch are respectively installed on the frame; A plate pulling cylinder is fixed on the upper end frame of the temporary storage platform and the lifting platform. The plate pulling cylinder includes two plates, namely a left plate pulling plate and a right plate pulling plate, which are connected by a crossbeam in the middle. The plate pulling cylinder is connected to one of the plates; and the distance between the two plates is the width of a temporary storage platform and the lifting platform added together; After the lifting platform is lowered into place, a third bag pushing structure is installed at the rear end of the lifting platform; the front end of the lifting platform after it is lowered into place is the bag outlet; a bag supporting structure is installed at the bag outlet; the bag supporting structure includes an outer supporting plate and an inner supporting plate; the inner supporting plate is connected to a bag supporting cylinder so that the inner supporting plate is movably fixed at the lower end of the bag outlet, and the solenoid valve connected to the bag supporting cylinder is controlled by a foot switch; The first bag pushing structure, the second bag pushing structure and the third bag pushing structure are identical in structure, and each group of bag pushing structures comprises a bag pushing cylinder, a pushing plate is connected to the action end of the bag pushing cylinder, and in the front in-position and return in-position positions of the piston in the bag pushing cylinder, magnetic switches are respectively arranged on the bag pushing cylinder as a bag pushing in-position signal switch and a bag pushing return signal switch; the first in-position signal switch is installed on the frame above the conveyor belt on the front side of its pushing plate, and the first anti-blocking bag signal switch is arranged at the front end of the first in-position signal switch, adjacent to the second in-position signal switch; the second in-position signal switch is installed above the conveyor belt on the front side of its pushing plate, and the second anti-blocking bag signal switch is arranged on the frame at the entrance of the flour packaging bag; The outer support plate extends downward in an arc shape from the upper end of the bag outlet, and the inner baffle also extends downward in an arc shape; two fixed positions of the baffle are respectively fixed with in-position signal switches; Anti-blocking bag signal switches are also installed corresponding to the first bag pushing structure and the second bag pushing structure, which are the first anti-blocking bag signal switch and the second anti-blocking bag signal switch respectively; the first in-place signal switch and the second in-place signal switch and the first anti-blocking bag signal switch and the second anti-blocking bag signal switch are diffuse reflection photoelectric switches respectively.

2. The high-speed small-package flour centralized packaging device according to claim 1 is characterized in that: A baffle is installed between the second temporary storage platform and the lifting platform. The baffle is installed on the upper frame through a hinge, and a baffle cylinder is also fixed on the frame. The action end of the baffle cylinder is connected to the baffle.

3. The high-speed small-package flour centralized packaging device according to claim 1 is characterized in that: The bag outlet is a mounting plate with an opening, and the bag-supporting structure is installed on the mounting plate. A bag-blowing cylinder is connected to the lower end of the mounting plate, and a track is formed on the frame, and the mounting plate moves within the track; a touch screen is installed on the frame, and the touch screen is connected to a PLC controller; the conveyor belt drive motor, the switch solenoid valves of each cylinder and each signal switch are respectively connected to the PLC controller.

4. A working method of the high-speed small-package flour centralized packaging device according to claim 1, characterized in that: The steps include: Step 1: Select the number of small flour bags to be packaged each time on the touch screen, record the number of bags as N, then start the centralized packaging device, put the large packaging bag on the bag support structure, step on the foot switch to control the movement of the bag support cylinder, so that the inner support plate moves to tighten the large packaging bag; at the same time, the lifting platform rises; Step 2: After the centralized packaging device is started, the PLC controller controls the conveyor belt motor and the first in-place signal switch to work, and transmits the small package flour bag to the far end of the conveyor belt running direction. After the first in-place signal switch senses that the small package flour bag is in place, it feeds back the signal to the PLC controller. During this process, the conveyor belt keeps running, and the PLC controller controls the cylinder corresponding to the solenoid valve in the first bag pushing structure to work, pushing the small package flour to the first temporary storage platform, and then the cylinder returns to its position. During this process, the push bag in-place signal switch and the push bag return signal switch feed back signals to the PLC controller; Step 3: After the number of small-package flour bags sensed by the first arrival signal is N, the number of flour bags stored on the first temporary storage platform is N. The PLC controller transmits a signal to activate the pull plate cylinder, and the pull plate scrapes the small-package flour bags to the lifting platform; Step 4: After the plate pulling cylinder is completed, the PLC controls the cylinder of the lifting platform to descend. When it descends to the position, the descending position signal switch transmits a signal to the PLC controller. The PLC controller controls the cylinder in the third bag pushing structure to move, and the small flour bag is pushed from the bag outlet to the large bag. The push bag position signal switch and the push bag return signal switch send signals to the controller. After the push bag returns to the position, the lifting platform rises, and the bagging of a large flour bag is completed. Then, the next large bag is set on the bag supporting structure. Step 5: At the same time as step 4, after the plate pulling action is completed, the second signal sensing switch works, and after sensing the small package flour bag, the second bag pushing structure works to push the small package flour bag to the second temporary storage platform; after the second signal sensing switch senses that the number of small package flour bags is N, the PLC controller transmits a signal to activate the plate pulling cylinder, so that the plate pulling scrapes the small package flour bag to the lifting platform; Then, step 4 is repeated to complete the bagging of another large-packaged flour bag, and then the next large packaging bag is placed on the bag-supporting structure; the production is cyclical.

5. The working method of the high-speed small-package flour centralized packaging device according to claim 4 is characterized in that: In step 5, when the second bag pushing structure pushes the small package flour bag to the second temporary storage platform, when the second signal sensing switch senses the number of the Nth bag of small package flour or the N-1th bag of small package flour, the PLC controller activates the baffle cylinder to pull up the baffle. After the baffle is pulled up into place, the PLC controller transmits a signal to activate the pull plate cylinder to make the pull plate scrape the small package flour bag to the lifting platform; Then, step 4 is repeated to complete the bagging of another large-packaged flour bag, and then the next large packaging bag is placed on the bag-supporting structure; the production is cyclical.

6. The working method of the high-speed small-package flour centralized packaging device according to claim 4 is characterized in that: In the steps 2 and 5, at the first anti-blocking bag signal and the second anti-blocking bag signal, when the cylinders of the first bag pushing structure and the second bag pushing structure are running, when small flour bags are sensed, the PLC controller sends a signal to stop the conveyor belt.

7. The working method of the high-speed small-package flour centralized packaging device according to claim 4 is characterized in that: In the steps 4 and 5, after the lifting platform is raised, the PLC controller controls the bag-blowing cylinder to work, lifts the bag-supporting structure upward, and drives the large packaging bag to move upward. Then the bag-supporting cylinder is activated to release the large packaging bag, completing the bag-blowing operation.

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