Tobacco double-sliding-frame opposite-top-cabinet uniform material spreading system and control method

Abstract

The invention belongs to the technical field of cigarette cut tobacco production line storage cabinet feeding and material spreading control, and particularly relates to a double-sliding-frame opposite-top-cabinet uniform material spreading system for cigarettes and a control method of the double-sliding-frame opposite-top-cabinet uniform material spreading system. The system comprises a top-to-top cabinet A and a top-to-top cabinet B, a sliding frame A, a sliding frame B, a sliding frame A track, a sliding frame B track, an opposite top cabinet discharging port, a material spreading trolley, a material spreading trolley A end proximity piece, a material spreading trolley B end proximity piece, a sliding frame A left terminal proximity switch, a sliding frame A right terminal proximity switch, a sliding frame B left terminal proximity switch, a sliding frame B right terminal proximity switch, a sliding frame A proximity piece, a sliding frame B proximity piece and a sliding frame A discharging port material detection photoelectric tube are included. And B, a carriage discharge port material detection photoelectric tube. According to the technical scheme, uniform mixing of material formulas in the two cabinets during reciprocating material spreading of the top cabinet is guaranteed, the empty head distance of the two cabinets and the thickness of materials at the tails of the cabinets are consistent, the quality risks of material blocking and material breaking caused by flow fluctuation of material heads and material tails during cabinet discharging are effectively avoided, and the requirements of process quality and continuous production are met.

Description

Technical Field

[0001] The invention belongs to the technical field of material feeding control of storage cabinets in a cigarette shred production line, and particularly relates to a uniform material spreading system and a control method for a double-slide top cabinet for cigarettes. Background Art

[0002] In cigarette production lines, top-mounted cabinets are widely used because they can be used simultaneously in groups of two cabinets or independently. They are particularly preferred for companies operating two production lines. Depending on process and production requirements, materials from both lines can be fed into the same top-mounted cabinet at different times, or into any single cabinet in any group. This functionality is achieved through the material infeed control method, which utilizes a dual-slide infeed system for the top-mounted cabinets. Because both slides are perpendicular to the top-mounted cabinets and located in the center of their upper sections, using different production lines (and therefore different slides) to feed the same top-mounted cabinets results in inconsistent material headroom (i.e., the distance between the materials and the center discharge port) within the same top-mounted cabinet. This makes it impossible to adjust the bottom conveyor speed when materials are discharged simultaneously, resulting in material flow fluctuations at the head and even material blockages. Furthermore, inconsistent material heights at the tail end of the same top-mounted cabinets prevent timely adjustment of the bottom conveyor speed, leading to material flow fluctuations and even material breakage. Therefore, it is urgent to design a control method and system for uniform material spreading in the top cabinet with double slides for cigarettes to ensure uniform material in the two cabinets when the top cabinets are spread back and forth, as well as consistent empty distance between the two cabinets and thickness of the material at the end of the cabinets, so as to meet the requirements of process quality and continuous production. Summary of the Invention

[0003] The purpose of the present invention is to provide a double-slide top cabinet uniform material spreading system and control method for cigarettes, to ensure the uniformity of materials in the two cabinets when the top cabinets are reciprocatingly spread, and the consistency of the empty distance between the two cabinets and the thickness of the materials at the end of the cabinets, thereby meeting the requirements of process quality and continuous production.

[0004] To achieve the above objectives, this application is implemented through the following technical solutions:

[0005] A double-slide top cabinet uniform material spreading system for cigarettes, comprising a top cabinet A, a top cabinet B, a slide A, and a slide B, wherein the slide A is slidably arranged on a slide A track, and the slide B is slidably arranged on a slide B track;

[0006] A terminal proximity switch for the top cabinet A is provided on the top cabinet A, and a terminal proximity switch for the top cabinet B is provided on the top cabinet B;

[0007] The discharge port of the top cabinet is set below the opposite side of the top cabinet A and the top cabinet B, and the material spreading trolley is set above the top cabinet A and the top cabinet B; the material spreading trolley A end approach plate is set on the left side of the material spreading trolley, and the material spreading trolley B end approach plate is set on the right side of the material spreading trolley;

[0008] A terminal proximity switch for the top cabinet A is provided on the top cabinet A, and a terminal proximity switch for the top cabinet B is provided on the top cabinet B;

[0009] The A carriage is provided with an A carriage left terminal proximity switch and an A carriage right terminal proximity switch, and the B carriage is provided with a B carriage left terminal proximity switch and a B carriage right terminal proximity switch; the A carriage is provided with an A carriage proximity plate, and the B carriage is provided with a B carriage proximity plate;

[0010] A photoelectric tube for detecting the material at the discharge port of carriage A is provided at the discharge port of carriage A, and a photoelectric tube for detecting the material at the discharge port of carriage B is provided at the discharge port of carriage B;

[0011] A paving trolley belt is provided on the paving trolley.

[0012] Furthermore, an A-slideway belt is provided on the A-slideway, and a B-slideway belt is provided on the B-slideway.

[0013] A method for controlling uniform spreading of materials on a double-slide top cabinet for cigarettes, using any of the above-mentioned spreading systems, comprises the following steps:

[0014] S1. When carriage A is selected to enter the set top cabinet, a start command is issued, and the coordinated material spreading trolley runs at the set speed to find the initial position. When the material spreading trolley approaches the top cabinet B, it stops running, and the material spreading trolley belt on the material spreading trolley starts running at the set speed toward the top cabinet A;

[0015] Slide A starts to search for cabinets at the set speed. When the discharge end of slide A reaches cabinet A, slide A stops running, and the slide belt on slide A runs toward cabinet A at the set speed.

[0016] When the photoelectric tube detecting the material at the discharge port of S2 carriage A detects that the material begins to enter the top cabinet A, the material spreading trolley starts to run toward the top cabinet A at a speed of V1, and the material begins to be spread toward the top cabinet A at a speed of V through the material spreading trolley and the material spreading trolley belt;

[0017] S3. When the material spreading trolley reaches the terminal of the top cabinet A, the material spreading trolley and the material spreading trolley belt stop running, and then the material spreading trolley belt starts to run in the opposite direction at a speed V toward the top cabinet B. When the material on the material spreading trolley belt starts to fall into the top cabinet B, the material spreading trolley starts to run in the opposite direction toward the top cabinet B at a speed V2;

[0018] S4. When the material spreading trolley reaches the top cabinet B, the material spreading trolley and the material spreading trolley belt stop running, the A slide runs toward the top cabinet A, and the material spreading trolley belt starts to run toward the top cabinet A at a speed V. After a delay of t seconds, the material spreading trolley runs toward the top cabinet A at a speed V1.

[0019] Furthermore, the belt of the material spreading trolley always runs at speed V. When the material spreading trolley runs at speed V1 to the top cabinet A, it should be ensured that when the material spreading trolley reaches the top cabinet A, the material staying on the material spreading belt when the material spreading trolley runs at speed V2 to the top cabinet B before the A slide steps forward just falls into the top cabinet A;

[0020] Similarly, when the material laying trolley is running at a speed of V2 to the top cabinet B, it should be ensured that when the material laying trolley reaches the terminal of the top cabinet B, the materials that remain on the material laying belt when the material laying trolley is running at a speed of V1 to the top cabinet A before the A slide steps forward just fall into the top cabinet B.

[0021] Furthermore, no matter when the material paving trolley reaches the terminal of the top A or B cabinet, the A slide always runs in T-second pulse steps. When the material paving trolley reaches the terminal of the top A or B cabinet, and the A slide approaching piece approaches the A slide left terminal proximity switch, the material paving trolley reaches the terminal of the top B or A cabinet again, and the A slide starts to run in reverse stepping until the A slide approaching piece approaches the A slide right terminal proximity switch, and the A slide starts to run in reverse stepping again.

[0022] Furthermore, when the material detection photoelectric tube at the discharge port of slide A detects no material and receives a cabinet change instruction, the material spreading trolley runs back and forth twice in the above mode and stops running to complete the reciprocating and uniform feeding of the top cabinet.

[0023] Further, in step S3, when the material paving trolley reaches the terminal of the top cabinet A, specifically: when the material paving trolley reaches the terminal of the top cabinet A and the approach plate of the A end of the material paving trolley approaches the approach switch of the terminal of the top cabinet A, the material paving trolley and the material paving trolley belt stop running, and the A slide steps one step toward the left end of the top cabinet with a pulse of T seconds; the material paving trolley belt delays t seconds and starts to run in reverse at a speed of V toward the top cabinet B. When the material paving trolley delays t1 seconds and the material on the material paving trolley belt starts to fall into the top cabinet B, the material paving trolley starts to run in reverse at a speed of V2 toward the top cabinet B.

[0024] Furthermore, in step S4, when the material spreading trolley reaches the top cabinet B, specifically: when the material spreading trolley reaches the terminal of the top cabinet B and the approach plate of the B end of the material spreading trolley approaches the approach switch of the terminal of the top cabinet B, the material spreading trolley and the material spreading trolley belt stop running, and the A slide steps one step toward the left end of the top cabinet with a 3-second pulse; the material spreading trolley belt delays t seconds and starts to run in reverse at a speed of V toward the top cabinet A, and the material spreading trolley also delays t seconds, and then the material spreading trolley starts to run in reverse at a speed of V1 toward the top cabinet A.

[0025] The beneficial effects of the present invention are:

[0026] The present technical solution provides a control system and method for uniformly spreading materials into double-slide top cabinets for cigarettes, ensuring uniform mixing of the material formulas in the two cabinets when the top cabinets are spread back and forth, and consistency of the empty distance between the two cabinets and the thickness of the materials at the end of the cabinets, effectively avoiding the risk of blockage and breakage caused by flow fluctuations at the head and tail of the materials when the materials are out of the cabinets, and meeting the requirements of process quality and continuous production. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the top cabinet feeding system in the double-slide top cabinet material feeding and uniform spreading control system for cigarettes of the present invention.

[0028] Description of reference numerals:

[0029] 1. Terminal proximity switch of top cabinet A; 2. Slide rail A; 3. Slide rail B; 4. Discharge port of top cabinet; 5. Approach plate at end B of material spreading trolley; 6. Terminal proximity switch of top cabinet B; 7. Top cabinet B; 8. Approach switch at right terminal of B slide; 9. Approach switch at right terminal of A slide; 10. Slide B; 11. Approach plate of B slide; 12. Slide A; 13. Material detection photoelectric tube at discharge port of B slide; 14. Approach switch at left terminal of B slide; 15. Approach plate of A slide; 16. Material detection photoelectric tube at discharge port of A slide; 17. Approach switch at left terminal of A slide; 18. Belt of material spreading trolley; 19. Material spreading trolley; 20. Approach plate at end A of material spreading trolley. DETAILED DESCRIPTION

[0030] The following describes the present invention in detail with reference to the accompanying drawings. The following embodiments are merely exemplary and can only be used to explain and illustrate the technical solutions of the present invention, and cannot be interpreted as limiting the technical solutions of the present invention.

[0031] The principle of the present invention is to use the material detection photoelectric switch installed at the discharge end of the slide to determine the travel time of the material spreading trolley and the material spreading belt of the top cabinet, and the selected feed slide to determine the initial travel direction, travel speed and delay time of the material spreading trolley and the material spreading belt at the two terminals, so as to ensure the uniformity of the materials in the two cabinets when the top cabinets are spread back and forth, as well as the consistency of the empty distance between the two cabinets and the thickness of the materials at the end of the cabinets.

[0032] like Figure 1 As shown, the present application provides a double-slide top cabinet uniform material spreading system for cigarettes, comprising top cabinet A, top cabinet B, slide A, and slide B, wherein the slide A is slidably arranged on the slide A track, and the slide B is slidably arranged on the slide B track;

[0033] A terminal proximity switch for the top cabinet A is provided on the top cabinet A, and a terminal proximity switch for the top cabinet B is provided on the top cabinet B;

[0034] The discharge port of the top cabinet is set below the opposite side of the top cabinet A and the top cabinet B, and the material spreading trolley is set above the top cabinet A and the top cabinet B; the material spreading trolley A end approach plate is set on the left side of the material spreading trolley, and the material spreading trolley B end approach plate is set on the right side of the material spreading trolley;

[0035] A terminal proximity switch for the top cabinet A is provided on the top cabinet A, and a terminal proximity switch for the top cabinet B is provided on the top cabinet B;

[0036] The A carriage is provided with an A carriage left terminal proximity switch and an A carriage right terminal proximity switch, and the B carriage is provided with a B carriage left terminal proximity switch and a B carriage right terminal proximity switch; the A carriage is provided with an A carriage proximity plate, and the B carriage is provided with a B carriage proximity plate;

[0037] A slide outlet material detection photoelectric tube is set at the A slide outlet, and a slide outlet material detection photoelectric tube is set at the B slide outlet; a paving trolley belt is set on the paving trolley.

[0038] In the present application, an A-slideway belt is provided on the A-slideway, and a B-slideway belt is provided on the B-slideway.

[0039] The present application provides a control method for uniformly spreading materials in a double-slide top cabinet for cigarettes, wherein a material detection photoelectric tube 16 for the material discharge port of the A slide 12 is installed, and a material detection photoelectric tube 13 for the material discharge port of the B slide 10 is installed to detect the time when materials enter the cabinet.

[0040] In this application, when the A slide 12 is selected to enter a certain top cabinet, a start command is issued, and the material spreading trolley 19 of the top cabinet runs at a set speed to find the initial position, and the material spreading trolley belt 18 on the material spreading trolley 19 does not run. When the material spreading trolley 19 reaches the terminal of the top cabinet B 7 for the first time and the B end approaching piece 5 approaches the terminal proximity switch 6 of the top cabinet B, the material spreading trolley 19 stops running and is in a standby preparation state, and the material spreading trolley belt 18 on the material spreading trolley 19 starts to run toward the top cabinet A at a set speed V; at the same time, the A slide 12 starts to search for the cabinet at a set speed, and the slide belt on the A slide 12 does not run. When the discharging end of the A slide 12 reaches the top cabinet A for the first time and the A slide approaching piece 15 approaches the right terminal proximity switch 9 of the A slide, the A slide 12 stops running and is in a standby preparation state, and the slide belt on the A slide 12 starts to run toward the top cabinet A at a set speed.

[0041] In this application, when the material starts to be transported to the slide blanking port through the A slide 12 belt and is detected by the material detection photoelectric tube 16 at the A slide discharge port as the material starts to enter the cabinet, the material laying trolley 19 starts to run toward the top A cabinet at a speed of V1; the material starts to be laid toward the top A cabinet at a speed of V through the material laying trolley 19 and the material laying trolley belt 18 on the material laying trolley.

[0042] In this application, when the material paving trolley arrives at the terminal of the top cabinet A and the approach plate 20 of the end of the material paving trolley approaches the terminal approach switch 1 of the top cabinet A: the material paving trolley 19 and the material paving trolley belt 18 stop running, and the A slide 12 steps one step toward the left end of the top cabinet with a pulse of T seconds; the material paving trolley belt 18 delays t seconds and starts to run in reverse at a speed of V toward the top cabinet B 7. When the material paving trolley 19 delays t1 seconds and the material on the material paving trolley belt 18 starts to fall into the top cabinet B 7, the material paving trolley 19 starts to run in reverse at a speed of V2 toward the top cabinet B 7.

[0043] In this application, when the material spreading trolley 19 reaches the terminal of the top B cabinet 7 and the B end approaching piece 5 of the material spreading trolley approaches the terminal approaching switch 6 of the top B cabinet: the material spreading trolley 19 and the material spreading trolley belt 18 stop running, and the A slide 12 steps one step toward the left end of the top A cabinet with a pulse of T seconds; the material spreading trolley belt 18 delays t seconds and starts to run in the opposite direction at a speed of V toward the top A cabinet, and the material spreading trolley 19 also delays t seconds, and then the material spreading trolley 19 starts to run in the opposite direction toward the top A cabinet at a speed of V1.

[0044] In this application, the material laying trolley belt 18 always runs at a constant speed V. When the material laying trolley 19 runs to the top cabinet A at a speed of V1, it should be ensured that when the material laying trolley 19 reaches the terminal of the top cabinet A, the material that stays on the material laying trolley belt 18 when the material laying trolley runs to the top cabinet B 7 at a speed of V2 before the A slide 12 steps forward just falls into the top cabinet A; similarly, when the material laying trolley 19 runs to the top cabinet B 7 at a speed of V2, it should be ensured that when the material laying trolley 19 reaches the terminal of the top cabinet B 7, the material that stays on the material laying trolley belt 18 when the material laying trolley runs to the top cabinet A at a speed of V1 just falls into the top cabinet B 7.

[0045] In this application, no matter when the material paving trolley 19 reaches the terminal of the top A or B cabinet, the A slide 12 always runs in T-second pulse steps. When the material paving trolley 19 reaches the terminal of the top A or B cabinet, and the A slide 12 approaching piece 15 approaches the A slide left terminal proximity switch 17, the material paving trolley 19 reaches the terminal of the top B or A cabinet again, and the A slide 12 starts to step in the reverse direction until the A slide approaching piece 15 approaches the A slide right terminal proximity switch 9, and the A slide 12 starts to step in the reverse direction again.

[0046] In this application, when the material detection photoelectric tube 16 at the discharge port of the A slide 12 detects no material and receives a cabinet change instruction, the material spreading trolley 19 runs back and forth twice in the above mode and stops running to complete the reciprocating and uniform feeding of the top cabinet.

[0047] In this application, when the B slide 10 is selected to enter a certain top cabinet, a start command is issued, and the material spreading trolley 19 of the top cabinet runs at a certain constant speed to find the initial position, and the material spreading trolley belt 18 on the material spreading trolley 19 does not run. When the material spreading trolley 19 reaches the top cabinet A terminal for the first time and the material spreading trolley A end approaching piece 20 approaches the top cabinet A terminal proximity switch 1, the material spreading trolley 19 stops running and is in a standby preparation state, and the material spreading trolley belt 18 on the material spreading trolley starts to run toward the top cabinet B 7 at a constant speed V; at the same time, the B slide 10 starts to search for the cabinet at a certain constant speed, and the slide belt on the B slide 10 does not run. When the discharging end of the B slide 10 reaches the top cabinet for the first time and the B slide approaching piece 11 approaches the B slide right terminal proximity switch 8, the B slide 10 stops running and is in a standby preparation state, and the slide belt on the B slide 10 starts to run toward the top cabinet at a certain constant speed.

[0048] In this application, when the material starts to be transported to the slide blanking port through the slide belt and is detected by the material detection photoelectric tube 13 at the B slide discharge port as the material starts to enter the cabinet, the material laying trolley 19 starts to run toward the top B cabinet 7 at a speed of V1; the material starts to be laid toward the top B cabinet 7 at a speed of V through the material laying trolley 19 and the material laying belt 18 on the material laying trolley.

[0049] In this application, when the material spreading trolley reaches the terminal of the top cabinet B and the approach plate 5 of the B end of the material spreading trolley approaches the approach switch 6 of the terminal of the top cabinet B: the material spreading trolley 19 and the material spreading trolley belt 18 stop running, and the B slide 10 steps one step toward the left end of the top cabinet with a pulse of T seconds; the material spreading trolley belt 18 delays t seconds and starts to reverse and run toward the top cabinet A at a speed of V. When the material spreading trolley 19 delays t1 seconds and the material on the material spreading trolley belt 18 starts to fall into the top cabinet A, the material spreading trolley 19 starts to run in the opposite direction toward the top cabinet A at a speed of V2.

[0050] In this application, when the material spreading trolley 19 reaches the terminal of the top cabinet A and the approach plate 20 of the A end of the material spreading trolley approaches the approach switch 1 of the terminal of the top cabinet A: the material spreading trolley 19 and the material spreading trolley belt 18 stop running, and the B slide 10 steps one step toward the left end of the top cabinet with a pulse of T seconds; the material spreading trolley belt 18 delays t seconds and starts to run in the opposite direction at a speed of V toward the top cabinet B 7, and the material spreading trolley 19 also delays t seconds and starts to run in the opposite direction at a speed of V1 toward the top cabinet B 7.

[0051] In this application, the material-laying trolley belt 18 always runs at a constant speed V. When the material-laying trolley 19 runs to the top cabinet B 7 at a speed of V1, it should be ensured that when the material-laying trolley 19 reaches the terminal of the top cabinet B 7, before the B slide 10 steps forward, the materials that stay on the material-laying trolley belt 18 when the material-laying trolley 19 spreads materials to the top cabinet A at a speed of V2 just fall into the top cabinet B 7; similarly, when the material-laying trolley 19 runs to the top cabinet A at a speed of V2, it should be ensured that when the material-laying trolley 19 reaches the terminal of the top cabinet A, before the B slide 10 steps forward, the materials that stay on the trolley's material-laying belt 18 when the material-laying trolley 19 spreads materials to the top cabinet B 7 at a speed of V1 just fall into the top cabinet A.

[0052] In this application, no matter when the material paving trolley 19 reaches the terminal of the top A or B cabinet, the B slide 10 always runs in T-second pulse steps. When the material paving trolley 19 reaches the terminal of the top A or B cabinet, and the B slide approaching piece 11 approaches the B slide left terminal proximity switch 14, the material paving trolley 19 reaches the terminal of the top B or A cabinet again, and the B slide 10 starts to step in the reverse direction until the B slide approaching piece 11 approaches the B slide right terminal proximity switch 8, and the B slide 10 starts to step in the reverse direction again.

[0053] In this application, when the material detection photoelectric tube 13 at the discharge port of the B slide 10 detects no material and receives a cabinet change instruction, the material spreading trolley 19 runs back and forth twice in the above mode and stops running to complete the reciprocating and uniform feeding of the top cabinet.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A double-slide top cabinet uniform material spreading system for cigarettes, characterized in that: It includes a top cabinet A, a top cabinet B, a slide A, and a slide B. The slide A is slidably arranged on the slide A track, and the slide B is slidably arranged on the slide B track. A terminal proximity switch for the top cabinet A is provided on the top cabinet A, and a terminal proximity switch for the top cabinet B is provided on the top cabinet B; The discharge port of the top cabinet is set below the opposite side of the top cabinet A and the top cabinet B, and the material spreading trolley is set above the top cabinet A and the top cabinet B; the material spreading trolley A end approach plate is set on the left side of the material spreading trolley, and the material spreading trolley B end approach plate is set on the right side of the material spreading trolley; A terminal proximity switch for the top cabinet A is provided on the top cabinet A, and a terminal proximity switch for the top cabinet B is provided on the top cabinet B; The A carriage is provided with an A carriage left terminal proximity switch and an A carriage right terminal proximity switch, and the B carriage is provided with a B carriage left terminal proximity switch and a B carriage right terminal proximity switch; the A carriage is provided with an A carriage proximity plate, and the B carriage is provided with a B carriage proximity plate; A photoelectric tube for detecting the material at the discharge port of carriage A is provided at the discharge port of carriage A, and a photoelectric tube for detecting the material at the discharge port of carriage B is provided at the discharge port of carriage B; A paving trolley belt is provided on the paving trolley.

2. The double-slide top cabinet uniform material spreading system for cigarettes according to claim 1 is characterized in that: The A carriage is provided with an A carriage belt, and the B carriage is provided with a B carriage belt.

3. A method for controlling uniform spreading of materials on a double-slide top cabinet for cigarettes, using the spreading system according to any one of claims 1 or 2, characterized in that: The following steps are involved: S1. When carriage A is selected to enter the set top cabinet, a start command is issued, and the coordinated material spreading trolley runs at the set speed to find the initial position. When the material spreading trolley approaches the top cabinet B, it stops running, and the material spreading trolley belt on the material spreading trolley starts running at the set speed toward the top cabinet A; Slide A starts to search for cabinets at the set speed. When the discharge end of slide A reaches cabinet A, slide A stops running, and the slide belt on slide A runs toward cabinet A at the set speed. When the photoelectric tube detecting the material at the discharge port of S2 carriage A detects that the material begins to enter the top cabinet A, the material spreading trolley starts to run toward the top cabinet A at a speed of V1, and the material begins to be spread toward the top cabinet A at a speed of V through the material spreading trolley and the material spreading trolley belt; S3. When the material spreading trolley reaches the terminal of the top cabinet A, the material spreading trolley and the material spreading trolley belt stop running, and then the material spreading trolley belt starts to run in the opposite direction at a speed V toward the top cabinet B. When the material on the material spreading trolley belt starts to fall into the top cabinet B, the material spreading trolley starts to run in the opposite direction toward the top cabinet B at a speed V2; S4. When the material spreading trolley reaches the top cabinet B, the material spreading trolley and the material spreading trolley belt stop running, the A slide runs toward the top cabinet A, and the material spreading trolley belt starts to run toward the top cabinet A at a speed V. After a delay of t seconds, the material spreading trolley runs toward the top cabinet A at a speed V1.

4. The control method for uniformly spreading materials on a double-slide top cabinet for cigarettes according to claim 3 is characterized in that: The belt of the material spreading trolley always runs at speed V. When the material spreading trolley runs at speed V1 to the top cabinet A, it should be ensured that when the material spreading trolley reaches the top cabinet A, the material staying on the material spreading belt just falls into the top cabinet A when the material spreading trolley runs at speed V2 to the top cabinet B before the A slide steps forward. Similarly, when the material laying trolley is running at a speed of V2 to the top cabinet B, it should be ensured that when the material laying trolley reaches the terminal of the top cabinet B, the materials that remain on the material laying belt when the material laying trolley is running at a speed of V1 to the top cabinet A before the A slide steps forward just fall into the top cabinet B.

5. The control method for uniformly spreading materials on a double-slide top cabinet for cigarettes according to claim 4 is characterized in that: Regardless of when the material paving trolley reaches the terminal of the top A or B cabinet, the A slide always runs in T-second pulse steps. When the material paving trolley reaches the terminal of the top A or B cabinet, and the A slide approaching piece approaches the A slide left terminal proximity switch, the material paving trolley reaches the terminal of the top B or A cabinet again, and the A slide starts to run in reverse stepping until the A slide approaching piece approaches the A slide right terminal proximity switch, and the A slide starts to run in reverse stepping again.

6. The control method for uniformly spreading materials on a double-slide top cabinet for cigarettes according to claim 4 is characterized in that: When the material detection photoelectric tube at the discharge port of slide A detects no material and receives a cabinet change instruction, the material spreading trolley will run back and forth twice in the above mode and then stop to complete the reciprocating and uniform feeding of the top cabinet.

7. The control method for uniformly spreading materials on a double-slide top cabinet for cigarettes according to claim 3 is characterized in that: In step S3, when the material paving trolley arrives at the terminal of the top cabinet A, specifically: when the material paving trolley arrives at the terminal of the top cabinet A and the approach plate of the A end of the material paving trolley approaches the approach switch of the terminal of the top cabinet A, the material paving trolley and the material paving trolley belt stop running, and the A slide steps one step toward the left end of the top cabinet with a pulse of T seconds; the material paving trolley belt delays t seconds and starts to reverse and run toward the top cabinet B at a speed of V. When the material paving trolley delays t1 seconds and the material on the material paving trolley belt starts to fall into the top cabinet B, the material paving trolley starts to run in the opposite direction toward the top cabinet B at a speed of V2.

8. The method for controlling uniform spreading of materials on a double-slide top cabinet for cigarettes according to claim 3 is characterized in that: In step S4, when the material spreading trolley arrives at the top cabinet B, specifically: when the material spreading trolley arrives at the terminal of the top cabinet B and the approach plate of the B end of the material spreading trolley approaches the approach switch of the terminal of the top cabinet B, the material spreading trolley and the material spreading trolley belt stop running, and the A slide steps one step toward the left end of the top cabinet with a 3-second pulse; the material spreading trolley belt delays t seconds and starts to run in reverse at a speed of V toward the top cabinet A, and the material spreading trolley also delays t seconds, and then the material spreading trolley starts to run in reverse at a speed of V1 toward the top cabinet A.

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