Reconstituted tobacco finished product packing device and reconstituted tobacco finished product packing method

Abstract

The present invention provides a packing device for reconstituted tobacco products; it includes a bidirectional reciprocating conveyor belt, a weighing conveyor belt, a vibrating conveyor, and a pre-pressing bale press bin; the upper end of the pre-pressing bale press bin is provided with a feeding port, and the bidirectional reciprocating conveyor belt moves horizontally in a reciprocating manner; the vibrating conveyor is fixed above the bidirectional reciprocating conveyor belt, and the weighing conveyor belt is fixed above the vibrating conveyor. The packing of tobacco materials is uniform and has a high degree of looseness, improving the quality of cigarettes produced subsequently. The present invention also provides a method for packing reconstituted tobacco products using the above device, including the following steps: the paper-making method reconstituted tobacco is transported by the weighing conveyor belt to the vibrating conveyor; when the tobacco materials enter the bidirectional reciprocating conveyor belt after passing through the vibrating conveyor, they are evenly distributed in the front-rear direction; the bidirectional reciprocating conveyor belt moves in a bidirectional reciprocating manner under the control of an external control system. It ensures that the packing of tobacco materials is uniform and has a moderate degree of looseness, realizing the control of the uniformity of finished product packing.

Description

Technical Field

[0001] The present invention relates to a control system for a reconstituted tobacco production line by the papermaking method, and particularly to a packing device for reconstituted tobacco finished products.

[0002] The present invention also relates to a method for packing reconstituted tobacco finished products. Background Art

[0003] After the reconstituted tobacco by the papermaking method is cut and dried into finished products, it will enter the finished product box for packing. In the prior art, the finished reconstituted tobacco is packed by a pre-pressing and packing system, which consists of a feeding belt conveyor, a cloth feeding mechanism, a pre-pressing machine frame, a material box, a packing machine, related electrical control units, hydraulic control units, etc. Generally, the pre-pressing and packing system has two or three material boxes, and the working principles on both sides are exactly the same, and the process is alternately repeated in a cycle.

[0004] In the production of reconstituted tobacco, when the uniformity of the reconstituted tobacco finished products in the box is poor, it will affect the change of chemical indexes during the storage process of the reconstituted tobacco, and in severe cases, it will cause quality problems such as caking of the finished products.

[0005] In the process of cigarette production, first, the reconstituted tobacco needs to be treated with leaf moistening, loosening and reconditioning to increase the temperature and humidity of the reconstituted tobacco. If the packing uniformity is poor, it will cause the reconstituted tobacco not to loosen, and will affect problems such as its reconditioning temperature and humidity. The packing uniformity of the reconstituted tobacco will directly affect the quality of cigarettes.

[0006] The existing packing devices generally set a cloth plate at the material dropping port of the feeding belt conveyor, and make the tobacco materials relatively evenly arranged on the cross-section of the material box through the reciprocating swing of the cloth plate. However, it does not consider whether the tobacco materials can reach the position of the cloth plate at the minimum action point of the cloth plate and the influence of the laying state of the tobacco materials on the feeding belt conveyor on the cloth uniformity. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a packing device for reconstituted tobacco finished products with a simple structure and convenient use.

[0008] Another technical problem to be solved by the present invention is to provide a method for packing reconstituted tobacco finished products.

[0009] To solve the above technical problems, the present invention provides a packing device for reconstituted tobacco finished products;

[0010] It includes a bidirectional reciprocating moving conveyor belt, a weighing conveyor belt, a vibrating conveyor and at least one pre-pressing and packing machine material box;

[0011] The upper end of the pre - pressing and packing machine bin is provided with a feeding port. The bidirectional reciprocating moving conveyor belt is arranged above the pre - pressing and packing machine bin. The bidirectional reciprocating moving conveyor belt reciprocates horizontally in the left - right direction. The upper belt of the bidirectional reciprocating moving conveyor belt constitutes the first conveying channel for conveying tobacco materials, and the moving track at the end of the first conveying channel passes through the feeding port at the upper end of the pre - pressing and packing machine bin.

[0012] The vibrating conveyor is fixed above the bidirectional reciprocating moving conveyor belt. The upper side of the vibrating conveyor constitutes the second conveying channel for conveying tobacco materials. The weighing conveyor belt is fixed above the vibrating conveyor. The upper belt of the weighing conveyor belt constitutes the third conveying channel for conveying tobacco materials. The end of the third conveying channel of the weighing conveyor belt extends to the upper side of the starting end of the second conveying channel of the vibrating conveyor. The end of the second conveying channel of the vibrating conveyor extends to the upper side of the first conveying channel of the bidirectional reciprocating moving conveyor belt.

[0013] As an optimization of this reconstituted tobacco finished product packing device, this reconstituted tobacco finished product packing device includes two pre - pressing and packing machine bins. The two pre - pressing and packing machine bins are arranged horizontally side by side from left to right in sequence. The feeding ports of the two pre - pressing and packing machine bins are at the same horizontal height. The moving tracks at both ends of the bidirectional reciprocating moving conveyor belt pass through the feeding ports of the two pre - pressing and packing machine bins respectively.

[0014] As an optimization of this reconstituted tobacco finished product packing device, the bidirectional reciprocating moving conveyor belt is a bidirectional reciprocating moving variable - frequency conveyor belt.

[0015] As an optimization of this reconstituted tobacco finished product packing device, the vibrating conveyor has a right - angled triangle extension at its end. The hypotenuse of the right - angled triangle extension becomes the edge at the end of the second conveying channel. The end of the second conveying channel is directly above the bidirectional reciprocating moving conveyor belt. The two ends of the hypotenuse of the right - angled triangle extension are respectively close to the two side edges in the width direction of the first conveying channel in the projection on the first conveying channel.

[0016] This reconstituted tobacco finished product packing device can monitor the instantaneous flow rate of tobacco materials by using the weighing conveyor belt. The tobacco materials are conveyed to the vibrating conveyor through the weighing conveyor belt. The vibrating conveyor makes the tobacco materials evenly distributed in the left - right direction by its own up - and - down movement and the unique convex settings on its surface. The vibrating conveyor conveys the tobacco materials to the bidirectional reciprocating moving conveyor belt, and the tobacco materials are input into the pre - pressing and packing machine bin from the feeding port through the bidirectional reciprocating moving conveyor belt.

[0017] The beneficial effects of this reconstituted tobacco finished product packing device are as follows: reasonable structure, convenient to use, the tobacco materials are evenly packed in the box and have a high degree of looseness, which improves the quality of the subsequent production of cigarettes.

[0018] To solve the above technical problems, the present invention also provides a method for packing the finished reconstituted tobacco leaves by using the above-mentioned packing device for finished reconstituted tobacco leaves, including the following steps:

[0019] a) The papermaking reconstituted tobacco leaves are transported to the vibrating conveyor by the weighing conveyor belt. The weighing conveyor belt has a weighing function and is equipped with a tobacco material instantaneous flow feedback sensor. The instantaneous flow feedback sensor outputs signals to the external control system;

[0020] b) After the tobacco material arrives at the vibrating conveyor, its own up-and-down movement and the unique convex setting on its surface are used to evenly distribute the tobacco material in the width direction. When the tobacco material enters the end of the second conveying channel of the vibrating conveyor, due to the triangular design of its outlet end, it will ensure that the tobacco material is evenly distributed in the front-back direction when entering the bidirectional reciprocating conveyor belt;

[0021] c) The bidirectional reciprocating conveyor belt moves in a bidirectional reciprocating manner under the control of the external control system. The length of the bidirectional reciprocating conveyor belt moving in the left-right direction is the same as the width of the upper opening of the corresponding pre-press packing machine bin in the left-right direction.

[0022] As an optimization of this method for packing the finished reconstituted tobacco leaves, in step c), the running speed of the conveyor belt of the bidirectional reciprocating conveyor belt remains constant. The moving strokes of the end of the bidirectional reciprocating conveyor belt in the left-right direction are successively divided into seven intervals: L1, L2, L3, L4, L5, L6, and L7. Assuming that the basic speed of the end of the bidirectional reciprocating conveyor belt reciprocating in the left-right direction is t, the speed change range of the end of the bidirectional reciprocating conveyor belt reciprocating in the left-right direction in the L1 or L7 interval is 0 to 1.15t, the speed of the end of the bidirectional reciprocating conveyor belt reciprocating in the left-right direction in the L2 or L6 interval is 1.15t, the speed change range of the end of the bidirectional reciprocating conveyor belt reciprocating in the left-right direction in the L3 or L5 interval is t to 1.15t, and the speed of the end of the bidirectional reciprocating conveyor belt reciprocating in the left-right direction in the L4 interval is t.

[0023] As an optimization of this method for packing the finished reconstituted tobacco leaves, the ratio of the length of the L1 or L7 interval to the total moving stroke is 0.025:1, the ratio of the length of the L2 or L6 interval to the total moving stroke is 0.1:1, the ratio of the length of the L3 or L5 interval to the total moving stroke is 0.025:1, and the ratio of the length of the L4 interval to the total moving stroke is 0.7:1.

[0024] After adopting such a method, it can ensure that the tobacco material is evenly distributed in two planes and two directions in the pre-press packing machine bin, the packing uniformity is good, and the looseness degree is appropriate, and finally realize the control of the packing uniformity of the finished product. Description of the Drawings

[0025] Figure 1 It is a top view of an embodiment of the packing device for the finished product of the reconstituted tobacco leaf.

[0026] Figure 2 It is a front view of the reciprocating conveyor belt moving in both directions and two pre-pressing and packing machine bins in an embodiment of the packing device for the finished product of the reconstituted tobacco leaf.

[0027] Figure 3 It is a schematic diagram of the moving track of the reciprocating conveyor belt moving in both directions during the packing process of the left pre-pressing and packing machine bin in an embodiment of the packing method for the finished product of the reconstituted tobacco leaf. Specific implementation mode

[0028] As Figures 1 to 3 shown

[0029] The packing device for the finished product of the reconstituted tobacco leaf includes a reciprocating conveyor belt 2 moving in both directions, a weighing conveyor belt 4, a vibrating conveyor 3 and two pre-pressing and packing machine bins 1.

[0030] The two pre-pressing and packing machine bins 1 are arranged horizontally from left to right in sequence. The upper end of the pre-pressing and packing machine bin 1 is provided with a feeding port 11. The feeding ports 11 of the two pre-pressing and packing machine bins 1 are at the same horizontal height. The moving tracks at both ends of the reciprocating conveyor belt 2 moving in both directions respectively pass through the feeding ports 11 of the two pre-pressing and packing machine bins 1.

[0031] The reciprocating conveyor belt 2 moving in both directions is arranged above the two pre-pressing and packing machine bins 1. The reciprocating conveyor belt 2 moves horizontally back and forth in the left-right direction. The upper belt of the reciprocating conveyor belt 2 forms a first conveying channel for conveying tobacco materials. The moving track at the end of the first conveying channel passes through the feeding port 11 at the upper end of the pre-pressing and packing machine bin 1. The reciprocating conveyor belt 2 moving in both directions is a reciprocating moving variable-frequency conveyor belt.

[0032] The vibrating conveyor 3 is fixed above the reciprocating conveyor belt 2 moving in both directions. The upper side of the vibrating conveyor 3 forms a second conveying channel for conveying tobacco materials. The weighing conveyor belt 4 is fixed above the vibrating conveyor 3. The upper belt of the weighing conveyor belt 4 forms a third conveying channel for conveying tobacco materials. The end of the third conveying channel of the weighing conveyor belt 4 extends to the upper side of the starting end of the second conveying channel of the vibrating conveyor 3. The end of the second conveying channel of the vibrating conveyor 3 extends to the upper side of the first conveying channel of the reciprocating conveyor belt 2 moving in both directions.

[0033] The vibrating conveyor 3 is a plate-type vibrating conveyor. The end of the vibrating conveyor 3 extends outward with a right-angled triangle extension 31. The hypotenuse of the right-angled triangle extension 31 becomes the edge at the end of the second conveying channel. The end of the second conveying channel is directly above the reciprocating conveyor belt 2 moving in both directions. The two ends of the hypotenuse of the right-angled triangle extension 31 are respectively close to the two side edges in the width direction of the first conveying channel in the projection on the first conveying channel.

[0034] The method for packing the reconstituted tobacco finished product using the above-mentioned packing device for the reconstituted tobacco finished product includes the following steps:

[0035] a) The papermaking method reconstituted tobacco is transported by the weighing conveyor belt 4 to the vibrating conveyor 3. The weighing conveyor belt 4 has a weighing function and is equipped with a finished product instantaneous flow feedback sensor. The instantaneous flow feedback sensor outputs a signal to the external control system, and the control system sets the movement parameters of the bidirectional reciprocating conveyor belt 2 through automatic calculation.

[0036] b) After the tobacco material arrives at the vibrating conveyor 3, its own up and down movement and the unique convex setting on its surface are used to evenly distribute the tobacco material in the left and right directions. When the tobacco material enters the end of the second conveying channel of the vibrating conveyor 3, due to the triangular design of its outlet end, it will ensure that the tobacco material is evenly distributed in the front and back directions when entering the bidirectional reciprocating conveyor belt 2.

[0037] c) Taking the packing process of the left pre-pressing and packing machine bin 1 as an example, the bidirectional reciprocating conveyor belt 2 moves in a bidirectional reciprocating manner under the control of the external control system. The length of the bidirectional reciprocating conveyor belt 2 moving in the left and right directions is the same as the width of the upper opening of the corresponding pre-pressing and packing machine bin 1 in the left and right directions.

[0038] Among them, in step c), the running speed of the conveyor belt of the bidirectional reciprocating conveyor belt 2 remains constant. The moving stroke of the end of the bidirectional reciprocating conveyor belt 2 in the left and right directions is L. The moving stroke L of the end of the bidirectional reciprocating conveyor belt 2 in the left and right directions is successively divided into seven intervals of L1, L2, L3, L4, L5, L6, and L7. Assuming that the basic speed of the end of the bidirectional reciprocating conveyor belt 2 reciprocating in the left and right directions is t (t can be 24 mm / s to 40 mm / s), the speed change range of the end of the bidirectional reciprocating conveyor belt 2 reciprocating in the left and right directions in the L1 or L7 interval is between 0 and 1.15t, the speed of the end of the bidirectional reciprocating conveyor belt 2 reciprocating in the left and right directions in the L2 or L6 interval is 1.15t, the speed change range of the end of the bidirectional reciprocating conveyor belt 2 reciprocating in the left and right directions in the L3 or L5 interval is between t and 1.15t, and the speed of the end of the bidirectional reciprocating conveyor belt 2 reciprocating in the left and right directions in the L4 interval is t.

[0039] The ratio of the length of the L1 or L7 interval to the total moving stroke L is 0.025:1, the ratio of the length of the L2 or L6 interval to the total moving stroke L is 0.1:1, the ratio of the length of the L3 or L5 interval to the total moving stroke L is 0.025:1, and the ratio of the length of the L4 interval to the total moving stroke L is 0.7:1.

[0040] Tobacco materials are different from other raw materials. Tobacco materials contain more fibers, and tobacco materials are prone to adhesion to each other, which easily causes accumulation. If the reciprocating speed of the end of the bidirectional reciprocating conveyor belt 2 in the left-right direction is always t, the tobacco materials are conveyed into the bin 1 of the pre-pressing and packing machine through the bidirectional reciprocating conveyor belt 2, and the tobacco materials are unevenly packed in the bin 1 of the pre-pressing and packing machine, and the accumulated tobacco materials cannot be loosened.

[0041] However, according to this method for packing the finished reconstituted tobacco leaves, the total moving stroke L is divided into seven intervals, and the moving speed of the bidirectional reciprocating conveyor belt 2 is different in different intervals;

[0042] Assume that the initial position of the end of the bidirectional reciprocating conveyor belt 2 is in the L4 interval, and the end of the bidirectional reciprocating conveyor belt 2 is about to move to the left. The end of the bidirectional reciprocating conveyor belt 2 moves at a speed of t in the L4 interval. When the end of the bidirectional reciprocating conveyor belt 2 enters the L3 interval, it starts to accelerate. The end of the bidirectional reciprocating conveyor belt 2 enters the L2 interval at a speed of 1.15t. After the end of the bidirectional reciprocating conveyor belt 2 enters the L1 interval, it starts to decelerate until the speed is reduced to 0. At this time, the end of the bidirectional reciprocating conveyor belt 2 moves to the leftmost stroke position;

[0043] The end of the bidirectional reciprocating conveyor belt 2 moves to the right. The end of the bidirectional reciprocating conveyor belt 2 enters the L2 interval at a speed of 1.15t. When the end of the bidirectional reciprocating conveyor belt 2 enters the L3 interval, it starts to decelerate. The end of the bidirectional reciprocating conveyor belt 2 enters the L4 interval at a speed of t. The end of the bidirectional reciprocating conveyor belt 2 moves at a speed of t in the L4 interval. When the end of the bidirectional reciprocating conveyor belt 2 enters the L5 interval, it starts to accelerate. The end of the bidirectional reciprocating conveyor belt 2 enters the L6 interval at a speed of 1.15t. After the end of the bidirectional reciprocating conveyor belt 2 enters the L7 interval, it starts to decelerate until the speed is reduced to 0. At this time, the end of the bidirectional reciprocating conveyor belt 2 moves to the rightmost stroke position;

[0044] This cycle continues until the bin 1 of the left pre-pressing and packing machine is filled with tobacco materials and the packing is completed. Similarly, tobacco materials are filled into the bin 1 of the right pre-pressing and packing machine.

[0045] The above is only one implementation mode of the present invention. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the present invention, several variations and improvements can be made, and these should also be regarded as belonging to the protection scope of the present invention.

Claims

1. A method for packing finished reconstituted tobacco products using a packing device for finished reconstituted tobacco products; The packing device for finished reconstituted tobacco products includes a bidirectional reciprocating conveyor belt, a weighing conveyor belt, a vibrating conveyor, and at least one pre-pressing and packing machine bin; The upper end of the pre-pressing and packing machine bin is provided with a feeding port. The bidirectional reciprocating conveyor belt is arranged above the pre-pressing and packing machine bin. The bidirectional reciprocating conveyor belt reciprocates horizontally in the left-right direction. The upper belt of the bidirectional reciprocating conveyor belt constitutes the first conveying channel for conveying tobacco materials. The moving track at the end of the first conveying channel passes through the feeding port at the upper end of the pre-pressing and packing machine bin; The vibrating conveyor is fixed above the bidirectional reciprocating conveyor belt. The upper side of the vibrating conveyor constitutes the second conveying channel for conveying tobacco materials. The weighing conveyor belt is fixed above the vibrating conveyor. The upper belt of the weighing conveyor belt constitutes the third conveying channel for conveying tobacco materials. The end of the third conveying channel of the weighing conveyor belt extends to the upper side of the starting end of the second conveying channel of the vibrating conveyor. The end of the second conveying channel of the vibrating conveyor extends to the upper side of the first conveying channel of the bidirectional reciprocating conveyor belt; This packing device for finished reconstituted tobacco products includes two pre-pressing and packing machine bins. The two pre-pressing and packing machine bins are arranged horizontally side by side from left to right in sequence. The feeding ports of the two pre-pressing and packing machine bins are at the same horizontal height. The moving tracks at both ends of the bidirectional reciprocating conveyor belt pass through the feeding ports of the two pre-pressing and packing machine bins respectively; The bidirectional reciprocating conveyor belt is a bidirectional reciprocating variable-frequency conveyor belt; The end of the vibrating conveyor extends outwards with a right-angled triangle extension. The hypotenuse of the right-angled triangle extension becomes the edge of the end of the second conveying channel. The end of the second conveying channel is directly above the bidirectional reciprocating conveyor belt. The two ends of the hypotenuse of the right-angled triangle extension are respectively close to the two side edges in the width direction of the first conveying channel in the projection on the first conveying channel; This method for packing finished reconstituted tobacco products using the packing device for finished reconstituted tobacco products includes the following steps: a) The paper-making reconstituted tobacco is transported to the vibrating conveyor by the weighing conveyor belt. The weighing conveyor belt has a weighing function. It is equipped with a finished product instantaneous flow feedback sensor, and the instantaneous flow feedback sensor outputs a signal to the external control system; b) After the tobacco materials arrive at the vibrating conveyor, the tobacco materials are evenly distributed in the width direction by using its own up-and-down movement and the unique convex settings on its surface. When the tobacco materials enter the end of the second conveying channel of the vibrating conveyor, due to the triangular design of its outlet end, it will ensure that the tobacco materials are evenly distributed in the front-back direction when entering the bidirectional reciprocating conveyor belt; c) The bidirectional reciprocating conveyor belt reciprocates in the left-right direction under the control of the external control system. The moving length of the bidirectional reciprocating conveyor belt in the left-right direction is the same as the width of the upper opening of the corresponding pre-pressing and packing machine bin in the left-right direction; In step c), the running speed of the conveyor belt of the reciprocating conveyor remains constant. The movement stroke of the end of the reciprocating conveyor belt in the left-right direction is sequentially divided into seven intervals: L1, L2, L3, L4, L5, L6, and L7. Assuming that the basic speed of the reciprocating movement of the end of the reciprocating conveyor belt in the left-right direction is t, the speed change range of the reciprocating movement of the end of the reciprocating conveyor belt in the left-right direction in the L1 or L7 interval is 0 to 1.15t, the speed of the reciprocating movement of the end of the reciprocating conveyor belt in the left-right direction in the L2 or L6 interval is 1.15t, the speed change range of the reciprocating movement of the end of the reciprocating conveyor belt in the left-right direction in the L3 or L5 interval is t to 1.15t, and the speed of the reciprocating movement of the end of the reciprocating conveyor belt in the left-right direction in the L4 interval is t; The ratio of the length of the L1 or L7 interval to the total movement stroke is 0.025:1, the ratio of the length of the L2 or L6 interval to the total movement stroke is 0.1:1, the ratio of the length of the L3 or L5 interval to the total movement stroke is 0.025:1, and the ratio of the length of the L4 interval to the total movement stroke is 0.7:1.

Images