Screen mesh assembly and pressing device

Abstract

The utility model belongs to the technical field of cigarette manufacturing, and discloses a screen assembly and a pressing device. The device comprises a material box, a screen part and a propelling device, an opening is formed in the side wall of the material box, a cavity is formed in the material box, the propelling device is installed on the outer side of the material box, the propelling device pushes the screen part to reciprocate in the direction perpendicular to the falling direction of tobacco leaves, the screen part penetrates through the opening and is inserted into the cross section of the cavity, the screen part comprises a filter screen, and the tobacco leaves penetrate through the filter screen. The screen parts, the openings and the propelling devices are in one-to-one correspondence; the problem that in the prior art, after tobacco leaves fall into an empty box, the consistency is poor due to the fact that the density is not uniform is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to cigarette manufacturing technical field especially, relate to a screen assembly and compression device. BACKGROUND

[0002] After the tobacco leaf passes through the steps of boxing, weighing, pre-pressing, re-weighing and re-pressing, the tobacco leaf will be packed into the tobacco leaf, and the tobacco leaf will enter the material box of the pre-pressing machine along with the conveying belt, and the tobacco leaf will fall into the empty box at the bottom of the material box from the upper side of the material box. After the tobacco leaf is filled into the material box, the pressing device at the top of the material box will push the pressing head downward, so that the pressing head is pressed on the tobacco leaf to compact the tobacco leaf.

[0003] However, when the tobacco leaf is transferred from the upper conveying belt to the lower conveying belt, the distribution of the tobacco leaf will be cone-shaped when it falls onto the lower conveying belt. After entering the empty box at the bottom of the material box, the tobacco leaf will be unevenly distributed due to the adhesion of the cone-shaped tobacco leaf. When the pressing head presses the tobacco leaf, the density of the compacted tobacco leaf will be uneven, resulting in inconsistent air permeability, which will further cause inconsistent moisture content of the tobacco leaf, reduce the consistency of the tobacco leaf, and affect the quality. SUMMARY

[0004] The utility model discloses a screen assembly and compression device, solve the problem that the consistency is poor due to the uneven density of tobacco leaf after falling into the empty box under the prior art.

[0005] To achieve this purpose, the utility model adopts the following technical scheme: the utility model provides a screen assembly, which comprises a material box, a screen part and a pushing device, the side wall of the material box is provided with an opening, a cavity is formed in the material box, the pushing device is installed outside the material box, the pushing device drives the screen part to reciprocate along the direction perpendicular to the falling direction of the tobacco leaf, the screen part is inserted into the cross section of the cavity through the opening, the screen part comprises a filter screen, the tobacco leaf passes through the filter screen, and the screen part, the opening and the pushing device are one-to-one corresponding.

[0006] Preferably, the screen part comprises a frame, the material box is a rectangular cavity, the frame is rectangular, the filter screen is installed in the frame, the pushing device comprises a motor and a gear, the motor drives the gear to rotate, a rack is formed at the lower side of the frame, and the gear is engaged with the rack.

[0007] Preferably, a grid is formed in the filter screen, and the tobacco leaf passes through the grid.

[0008] As preferably, the screen part includes at least two groups, the screen part is installed on the outer wall of the hopper along the tobacco falling direction, and the grid area gradually decreases along the tobacco falling direction.

[0009] As preferably, the screen part is provided with a partition wire, the partition wires in the screen part are parallel to each other, the tobacco passes through the gap between the partition wires, the screen part includes at least two groups, the screen part is installed on the outer wall of the hopper along the tobacco falling direction, and the partition wires on adjacent screen parts are perpendicular to each other.

[0010] As preferably, the partition wire is made of rubber.

[0011] A pressing device comprises the screen assembly, and further comprises a conveying belt, a paper box and a pressing head, the hopper is provided with an inlet on the side, the conveying belt is installed on one side of the inlet, the paper box is arranged on the lower side of the hopper, and the pressing head is installed on the top of the hopper.

[0012] Beneficial effects: The tobacco in a conical shape is dropped into the screen part in the cavity of the hopper, the screen part can scatter the falling tobacco, so that the tobacco is more uniform in the falling process, and the tobacco is more uniform in the process of falling on the bottom of the paper box; the pressing head is pressed, the pushing device draws the screen part out of the opening, the limiting is avoided, then the pressing head passes through the hopper to compact the tobacco in the paper box, the falling tobacco is more uniform due to the screen part, so that the compacted tobacco has higher sealing consistency, and the consistency of the tobacco is improved. BRIEF DESCRIPTION OF DRAWINGS

[0013] Fig. 1 is a cross-sectional view of the pressing device of the utility model;

[0014] Fig. 2 is a main view of the partition wire of the utility model;

[0015] Fig. 3 is a main view of the filter screen of the utility model.

[0016] In the drawing: 1, hopper; 11, cavity; 12, opening; 13, inlet; 2, frame; 3, partition wire; 4, paper box; 5, conveying belt; 6, pressing head; 7, gear; 8, rack; 9, filter screen. DETAILED DESCRIPTION

[0017] The utility model will be made further detailed description below combining with the drawings and examples. It can be understood that the specific examples described here are only used to explain the utility model, and not limit the utility model. In addition, it needs to be explained that, in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0018] In the description of the utility model, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral, it can be mechanical connection, or electrical connection, it can be directly connected, or indirectly connected through intermediate medium, it can be the communication inside two elements or the interaction relationship of two elements. For ordinary skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0019] In the utility model, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can include direct contact of the first and second features, or indirect contact of the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "under", "below" and "below" the second feature includes the first feature directly below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.

[0020] In the description of the embodiment, the terms "up", "down", "right", etc. orientation or position relationship is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore it cannot be understood as a limitation on the utility model. In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0021] Under the prior art, tobacco leaves need to fall from the upper conveying belt to the lower conveying belt during the conveying process of the conveying belt, and during each falling process to the lower side, due to the position of the lower conveying belt not changing for a short time, a conical accumulation will be formed on the lower conveying belt, resulting in uneven distribution of tobacco leaves into the hopper, uneven density after compaction, different water content in the final tobacco leaves and poor consistency.

[0022] In order to solve the above problems, such as Figs. 1 to 3The utility model provides a screen assembly, including material box 1, screen part and propelling device, the lateral wall of material box 1 is provided with opening 12, forms cavity 11 in material box 1, propelling device is installed in material box 1 outside, propelling device pushes screen part and reciprocates along perpendicular to tobacco leaf falling direction, screen part passes through opening 12 and is inserted in the cross section of cavity 11, screen part includes filter screen 9, tobacco leaf passes through filter screen 9, screen part, opening 12 and propelling device one to one correspondence.

[0023] Tobacco leaf will contact with screen part in the process of falling, wherein the tobacco leaf of conical accumulation is scattered by screen part, the conical aggregation of tobacco leaf is destroyed, makes tobacco leaf fall into the carton 4 of downside more evenly, finally is compacted after the head 6, makes the density of compacted tobacco leaf more uniform, makes the consistency of final tobacco leaf quality higher.

[0024] Screen part includes frame 2, material box 1 is rectangular cavity 11, frame 2 is rectangular, filter screen 9 is installed in frame 2, tobacco leaf impacts on filter screen 9, realizes again and stirs even, propelling device includes motor and gear 7, motor drives gear 7 to rotate, the downside of frame 2 is formed with rack 8, gear 7 is engaged with rack 8.

[0025] Through motor drive gear 7 forward rotation and reverse rotation, can insert and pull out screen part from opening 12, propelling device can control screen part to stretch out or retract, when the head 6 is pressed, screen part is withdrawn from cavity 11, avoids with the head 6 and appears limit, makes the head 6 can directly pass through cavity 11 and compacts the tobacco leaf in carton 4, after the head 6 rises back to the initial position, gear 7 rotates and continues to insert screen part in cavity 11, continues to scatter and stir even to tobacco leaf.

[0026] The utility model discloses that the filter screen 9 is formed with the grid, and the tobacco leaf passes through the grid, which can disperse the tobacco leaf more evenly, so that the density of the compacted tobacco leaf remains consistent.

[0027] Screen part includes at least two groups, and is installed on the outer wall of the material box 1 along the falling direction of the tobacco leaf. Along the falling direction of the tobacco leaf, the grid area gradually decreases. The multiple screen parts are arranged to stir the tobacco leaf at different positions, so that the tobacco leaf contacts the filter screen 9 with a higher area, thereby improving the uniformity of the distribution of the tobacco leaf in the carton 4, and ensuring that the final tobacco leaf remains consistent.

[0028] The screen part can further be provided with a separation wire 3, and the separation wires 3 in the screen part are parallel to each other. The tobacco leaf passes through the gap between the separation wires 3. The screen part includes at least two groups, and the separation wires 3 on the adjacent screen parts are perpendicular to each other.

[0029] The tobacco leaves pass through the partition wires 3 at different heights, the partition wires 3 can also stir the tobacco leaves, and the uniformity of the distribution of the tobacco leaves is improved.

[0030] The partition wires 3 and the filter screens 9 are made of rubber or other non-metal materials, so that the partition wires 3 and the filter screens 9 will not be rusted for a long time, and the tobacco leaves are prevented from being polluted.

[0031] The pressing device comprises a screen assembly, a conveying belt 5, a paper box 4 and a pressing head 6, the material box 1 is provided with a feeding port 13 on the side, the conveying belt 5 is installed on one side of the feeding port 13, the paper box 4 is arranged on the lower side of the material box 1, the pressing head 6 is installed on the top of the material box 1, the screen part is drawn out through the cooperation of the gear 7 and the rack 8, the pressing head 6 passes through the material box 1 and presses the tobacco leaves into the paper box 4, the tobacco leaves in the paper box 4 are compacted, then the pressing head 6 is lifted, and the pushing device continues to insert the screen part into the cavity 11.

[0032] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the implementation modes of the present application. For those skilled in the art, various obvious changes, re-adjustments and replacements can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the implementation modes. Any modification, equivalent replacement and improvement within the spirit and principle of the present application should be included in the protection scope of the present application.

Claims

1. A screen assembly characterized by, The device comprises a hopper (1), a screen part and a pushing device, the side wall of the hopper (1) is provided with an opening (12), a cavity (11) is formed in the hopper (1), the pushing device is installed outside the hopper (1), the pushing device pushes the screen part to move reciprocally along a direction perpendicular to the falling direction of tobacco leaves, the screen part is inserted on the cross section of the cavity (11) through the opening (12), the screen part comprises a filter screen (9), the tobacco leaves pass through the filter screen (9), the screen part, the opening (12) and the pushing device correspond one by one.

2. The screen assembly of claim 1, wherein, The screen part comprises a frame (2), the hopper (1) is a rectangular cavity (11), the frame (2) is rectangular, the filter screen (9) is installed in the frame (2), the pushing device comprises a motor and a gear (7), the motor drives the gear (7) to rotate, a rack (8) is formed on the lower side of the frame (2), the gear (7) is engaged with the rack (8).

3. The screen assembly of claim 2, wherein, A grid is formed in the filter screen (9), the tobacco leaves pass through the grid.

4. The screen assembly of claim 3, wherein, The screen part comprises at least two groups, the screen parts are installed on the outer wall of the hopper (1) along the falling direction of the tobacco leaves, along the falling direction of the tobacco leaves, the area of the grid gradually decreases.

5. The screen assembly of claim 2, wherein, A partition wire (3) is installed in the screen part, the partition wires (3) in the screen part are parallel to each other, the tobacco leaves pass through the gap between the partition wires (3), the screen part comprises at least two groups, the screen parts are installed on the outer wall of the hopper (1) along the falling direction of the tobacco leaves, the partition wires (3) on adjacent screen parts are perpendicular to each other.

6. The screen assembly of claim 5, wherein, The partition wire (3) is made of rubber.

7. A compression device, characterized in that The device comprises the screen assembly of claim 1, further comprising a conveyor belt (5), a carton (4) and a pressing head (6), a feeding port (13) is formed on the side of the hopper (1), the conveyor belt (5) is installed on one side of the feeding port (13), the carton (4) is arranged on the lower side of the hopper (1), the pressing head (6) is installed on the top of the hopper (1), the pressing head (6) passes through the hopper (1) to press the tobacco leaves into the carton (4).

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