Washboard and cigarette making machine

Abstract

The utility model belongs to the technical field of cigarette processing, and particularly discloses a washboard and a cigarette making machine. The twisting plate is provided with an arc-shaped twisting and connecting surface, the twisting and connecting surface is provided with a twisting and connecting area and two cigarette bearing areas located on the two opposite sides of the twisting and connecting area in the length direction of the twisting plate, two avoiding grooves are formed in the twisting and connecting surface in the length direction at intervals, the two avoiding grooves and the two cigarette bearing areas are arranged in a one-to-one correspondence mode, and the two avoiding grooves are arranged in the length direction. And each avoiding groove extends into the corresponding cigarette bearing area from the twisting and connecting area. According to the washboard and the cigarette making machine, the avoiding groove is formed in the twisting and connecting surface, so that the twisting and connecting gap can be effectively increased on the premise that the gap between the twisting and connecting drum wheel surface and the twisting and connecting surface is not changed, the cigarette rejecting rate is reduced, the product yield is improved, and the machining cost is reduced.

Description

Technical Field

[0001] The utility model relates to the field of cigarette processing, in particular to a washboard and a cigarette-making machine. Background Art

[0002] The continuous advancement of cigarette machinery manufacturing technology has led to the gradual industrialization and efficiency of cigarette manufacturing. However, how to reduce the waste rate of cigarettes in large-scale production is still a major problem facing the cigarette manufacturing industry.

[0003] The splicing gap, defined as the gap between the washboard and the splicing drum surface, is a key factor influencing cigarette rejection rates. Prior art often employs a feeler gauge or measuring rod between the splicing drum and the washboard to adjust the gap and find the optimal gap to reduce cigarette rejection rates.

[0004] Because the gap between the splicing drum and the washboard must ensure proper splicing of cigarettes, a larger gap can make splicing difficult. Therefore, the existing adjustment range of the splicing gap between the splicing drum and the washboard is limited, ranging from approximately 7.6mm to 8.2mm. Research has shown that the rejection rate of cigarettes with air leakage decreases as the splicing gap increases, while the corresponding rejection rate of cigarettes with chipped tips increases slightly within the splicing gap adjustment range of 7.6mm-10.2mm.

[0005] As can be seen from the above, the key to reducing the cigarette rejection rate lies in appropriately increasing the splicing gap. However, the adjustment range of the splicing gap caused by the existing washboard and splicing drum structure is difficult to effectively meet the demand for reducing the rejection rate. Therefore, a washboard and cigarette making machine are urgently needed to solve the above technical problems. Utility Model Content

[0006] One purpose of the utility model is to provide a scrubbing board which can reduce the rejection rate of cigarettes during splicing and improve the yield rate of cigarettes during splicing on the basis of reducing processing costs.

[0007] Another object of the present invention is to provide a cigarette making machine which can increase the adjustment range of the splicing gap, reduce the cigarette rejection rate, and improve the cigarette processing yield.

[0008] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0009] The rubbing board has an arc-shaped rubbing surface, which includes a rubbing area and two cigarette carrying areas located on opposite sides of the rubbing area along the length direction of the rubbing board. The rubbing surface is provided with two avoidance grooves spaced apart along the length direction. The two avoidance grooves are arranged in a one-to-one correspondence with the two cigarette carrying areas, and along the length direction of the rubbing board, each avoidance groove extends from the rubbing area to the inside of the corresponding cigarette carrying area.

[0010] Optionally, the avoidance groove has a depth of 1 mm to 3 mm.

[0011] Optionally, the avoidance groove has a first edge and a second edge arranged opposite to each other along the length direction, the second edge is located in the cigarette carrying area, and the distance between the first edge and the edge of the adjacent twisting area is W, and W is 0-3mm.

[0012] Optionally, the avoidance groove has a first edge and a second edge arranged opposite to each other along the length direction, the second edge is located in the cigarette supporting area, and the distance between the side edge of the cigarette supporting area away from the rubbing area and the second edge is 24mm-28mm.

[0013] Optionally, the avoidance groove passes through the washboard along the width direction of the washboard.

[0014] Optionally, the bottom surface of the avoidance groove is an arc-shaped surface that is compatible with the splicing surface.

[0015] Optionally, the two avoidance grooves are symmetrically arranged on both sides of the center line of the longitudinal direction of the splicing area.

[0016] Optionally, the width of the cigarette carrying area is L, and L is 51mm-53mm.

[0017] Optionally, the surface of the rubbing area is provided with rubbing grooves.

[0018] Beneficial effects:

[0019] The utility model proposes a rubbing board, which forms an avoidance effect for cigarettes by opening an avoidance groove on the rubbing surface of the rubbing board. It can effectively increase the rubbing gap under the premise of ensuring that the gap between the rubbing drum surface and the rubbing surface does not change, reduce the friction between the cigarettes and the rubbing drum, thereby effectively reducing the cigarette rejection rate, and at the same time avoids the problem that the gap between the rubbing drum and the rubbing board is too large and cannot be rubbed, that is, while ensuring that the gap between the rubbing drum and the rubbing surface meets the standard adjustment range, the adjustment range of the rubbing gap is increased, thereby reducing the cigarette rejection rate; at the same time, since the rubbing board is smaller and easier to disassemble, it is less difficult and less costly to directly open the avoidance groove on the rubbing board; in addition, the edge of the avoidance groove is located inside the cigarette bearing area, so that a part of the cigarette bearing area is not covered by the avoidance groove to support the cigarette, thereby ensuring the balance of the cigarette during the rubbing process, thereby avoiding the risk of cigarette breakage and bending caused by the tilting of the tobacco end of the cigarette, and further improving the product yield.

[0020] The cigarette making machine provided by the utility model, by adopting the above-mentioned rubbing plate, can ensure the normal rubbing and splicing process of cigarettes while increasing the adjustment range of the rubbing gap, reducing the cigarette rejection rate and improving the cigarette processing yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following is a brief introduction to the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 This is a front view of a washboard provided by an embodiment of the present utility model;

[0023] Figure 2 This is a schematic structural diagram of a washboard provided by an embodiment of the utility model;

[0024] Figure 3 It is a regional schematic diagram of the washboard provided in an embodiment of the utility model.

[0025] In the picture:

[0026] 1. Rub and join area;

[0027] 2. Cigarette carrying area;

[0028] 3. Avoid grooves. DETAILED DESCRIPTION

[0029] The technical solution of the present invention will be further described below with reference to the accompanying drawings and through specific implementation methods.

[0030] This embodiment provides a rubbing board to solve the problem that the adjustment range of the splicing gap caused by the existing rubbing board and splicing drum structure is difficult to effectively meet the demand for reducing the rejection rate.

[0031] like Figure 1-Figure 3 As shown, this embodiment provides a cigarette-making machine, which includes a washboard and a splicing drum. The washboard and the splicing drum cooperate to splice cigarette paper, cigarettes and filters to form cigarettes. The surface of the washboard is an arc-shaped splicing surface, and the shape of the splicing surface is adapted to the shape of the splicing drum surface to complete the splicing operation. When splicing cigarettes, the washboard and the splicing drum are spaced apart, and the cigarette can be sucked onto the surface of the splicing drum. When the splicing drum rotates to the corresponding area of the splicing surface while adsorbing the cigarette, the cigarette paper can be wrapped around the filter and the connection between the filter and the cigarette, completing the splicing. The spacing between the splicing surface and the surface of the splicing drum is approximately between 7.6mm and 8.2mm.

[0032] In this embodiment, the specific structure of the splicing drum and the matching structure between the scrubbing plate and the splicing drum can be set with reference to the existing technology. This is not the focus of improvement of the present invention and will not be described in detail here.

[0033] The splicing surface comprises a splicing zone 1 and two cigarette-carrying zones 2 located on either side of the splicing zone along the length of the washboard. The splicing zone 1 is the cigarette paper holding area, meaning it's slightly longer than the width of the filter to be spliced, allowing for splicing of the cigarette paper to the filter and the connection between the filter and the cigarette. The cigarette-carrying zone 2 extends from the splicing zone 1 to the edge of the washboard and is generally smaller than the length of the cigarette. During the actual splicing process, one end of the cigarette extends into the splicing zone 1, while the end away from the splicing zone 1 is supported by the cigarette-carrying zones 2, preventing the cigarette from tilting and causing bending or breakage.

[0034] In order to solve the problem in the prior art that the adjustment range of the splicing gap caused by the structural arrangement of the rubbing plate and the rubbing drum is difficult to effectively meet the demand for reducing the rejection rate, in this embodiment, two avoidance grooves 3 are further spaced apart on the splicing surface along the length direction of the rubbing plate. The two avoidance grooves 3 are arranged in one-to-one correspondence with the two cigarette carrying areas 2, and along the length direction of the rubbing plate, each avoidance groove 3 extends from the rubbing area 1 to the inside of the corresponding cigarette carrying area 2.

[0035] Specifically, the reason for choosing to provide a clearance groove 3 on the splicing surface rather than further adjusting the distance between the splicing drum and the washboard is that the adjustment range of the distance between the splicing drum and the washboard surface is limited, generally 7.6mm-8.2mm, and cannot exceed 10.2mm. If it exceeds 10.2mm, the rejection rate of chipped mouths will increase rapidly, and even the splicing cannot be completed. Providing a clearance groove 3 on the splicing surface, on the other hand, can increase the splicing gap while keeping the distance between the splicing drum and the washboard unchanged, thus reducing the range of adjustment of the distance between the two.

[0036] In addition, the two avoidance grooves 3 and the two cigarette supporting areas 2 are arranged in a one-to-one correspondence, which can ensure that each cigarette with an increased splicing gap is effectively supported to prevent the cigarette on any side from bending or breaking.

[0037] That is, the rubbing board provided in this embodiment forms an avoidance effect for cigarettes by opening an avoidance groove 3 on the rubbing surface of the rubbing board, and can effectively increase the rubbing gap under the premise of ensuring that the gap between the rubbing drum surface and the rubbing surface does not change, thereby reducing the friction between the cigarettes and the rubbing drum, thereby effectively reducing the cigarette rejection rate, and at the same time avoiding the problem that the gap between the rubbing drum and the rubbing board is too large and cannot be rubbed, that is, while ensuring that the gap between the rubbing drum and the rubbing surface meets the standard adjustment range, the adjustment range of the rubbing gap is increased, thereby reducing the cigarette rejection rate; at the same time, since the rubbing board is smaller and easier to disassemble, it is less difficult and less costly to directly open the avoidance groove 3 on the rubbing board; in addition, the edge of the avoidance groove 3 is located inside the cigarette supporting area 2, so that a part of the cigarette supporting area 2 is not covered by the avoidance groove 3 to support the cigarette, thereby ensuring the balance of the cigarette during the rubbing process, thereby avoiding the risk of cigarette breakage and bending caused by the tilting of the tobacco end of the cigarette, and further improving the product yield.

[0038] Optionally, the two avoidance grooves 3 are symmetrically arranged on both sides of the center line of the length direction of the splicing area 1. The symmetrical arrangement is more conducive to the splicing of double-length filter cigarettes, that is, the symmetrical positions of the avoidance grooves 3 on both sides can enable the cigarettes on both sides to obtain the same avoidance effect, thereby improving the consistency of the product and further improving the product yield.

[0039] Each avoidance groove 3 extends from the splicing area 1 to the corresponding cigarette carrying area 2. There are two specific implementation methods. One is that the avoidance groove 3 extends from the inside of the splicing area 1, and the other is that the avoidance groove 3 extends from the edge of the splicing area 1. Specifically, the avoidance groove 3 has a first edge and a second edge that are relatively arranged along the length direction. The second edge is located in the cigarette carrying area 2. The spacing between the first edge and the edge of the adjacent splicing area 1 is W, and W is 0-3mm, preferably 1.5mm-2.5mm. That is, the first edge of the avoidance groove 3 is located between the edge of the splicing area 1 and 0-3mm inside the splicing area 1. This range can ensure that the starting position of the avoidance groove 3 will not affect the splicing length of the filter and the connection between the filter and the cigarette, and also ensure that the avoidance groove 3 has sufficient width to form an avoidance effect on the cigarette. Among them, W is 1.5mm-2.5mm, which takes into account both a good splicing effect and a cigarette avoidance effect, and is an optimal value.

[0040] For example, in this embodiment, the distance D from the center line of the rubbing zone 1 along the longitudinal direction of the washboard to the edge of the rubbing zone 1 along the longitudinal direction is 34 mm. This value is suitable for a cigarette paper length of 34 mm and a filter length of 30 mm. Of course, the lengths of cigarette paper and filter are not unique, and the value of D is also not unique.

[0041] In conjunction with the above, the distance between the first edge of the avoidance groove 3 and the edge of the adjacent splicing zone 1 is 0-3 mm. For example, if D is 34 mm, then the first edge of the avoidance groove 3 is between 31 mm and 34 mm from the centerline of the splicing zone 1, preferably 32 mm. This means that the first edge of the avoidance groove 3 is located between the edge of the cigarette and the filter. Similarly, as the length of the cigarette paper and filter changes, the value of D will also change, and the numerical range of the distance between the first edge of the avoidance groove 3 and the centerline of the splicing zone 1 will also change, without specific limitation herein.

[0042] Optionally, the distance between the side edge of the cigarette carrying area 2 away from the rubbing area 1 and the second edge is in the range of 24-28mm. The distance between the side edge of the cigarette carrying area 2 away from the rubbing area 1 and the second edge refers to the width of the rubbing board on one side minus the width of the avoidance groove 3 that can carry cigarettes. If the width is too small, there will be a risk of insufficient support for the cigarettes, which will lead to the risk of the cigarettes being easily bent and broken during the rubbing process. If the width is too large, the length of the avoidance groove 3 will be insufficient while the width of the cigarette carrying area 2 remains unchanged, thereby reducing the avoidance effect on the cigarettes and failing to effectively reduce the cigarette rejection rate. Therefore, the distance between the side edge of the cigarette carrying area 2 away from the rubbing area 1 and the second edge is in the range of 24-28mm.

[0043] Optionally, the width of the cigarette holding area 2 is L, and L is 51 mm-53 mm. The range of L can ensure that after the avoidance groove 3 extends to the cigarette holding area 2, the remaining part of the cigarette holding area 2 can effectively hold cigarettes without causing the cigarettes to lose balance, while also ensuring that the size of the washboard is within a reasonable range.

[0044] Optionally, the surface of the splicing area 1 is provided with wrinkles, which is provided to ensure the splicing effect of the cigarettes. The setting of the wrinkles can be set with reference to the existing technology and will not be limited or elaborated here.

[0045] Optionally, the groove depth of the avoidance groove 3 is 1mm-3mm, preferably 2mm. When adjusting the equipment, the washboard will inevitably tilt, and the friction force on the cigarettes on the tilted side of the washboard will inevitably surge. If the groove depth of the avoidance groove 3 is less than 1mm, the cigarettes on the tilted side of the washboard will be over-squeezed by the splicing drum, causing damage to the cigarettes; and the rubbing grooves are easy to wear, and if the groove depth is too low, after the rubbing grooves are worn to a certain extent, the avoidance groove 3 will be flush with the surface of the splicing area 1, thereby losing the avoidance effect and requiring re-grooving. However, due to the limitation of the washboard thickness, the groove depth cannot be higher than 3mm. Therefore, the groove depth of the avoidance groove 3 is 1mm-3mm, preferably 2mm.

[0046] Optionally, the avoidance groove 3 extends through the washboard along its width. This arrangement allows the avoidance groove 3 to consistently avoid cigarettes during the cigarette splicing process, increasing the splicing gap and thus further reducing friction and lowering the cigarette rejection rate. Furthermore, this arrangement facilitates the processing of the washboard. If the avoidance groove 3 does not extend through the washboard along its width, it may extend partially or intermittently, as long as the avoidance groove 3 maintains its ability to provide a safe passage during filter splicing.

[0047] Optionally, the bottom surface of the avoidance groove 3 is an arc-shaped surface adapted to the splicing surface, i.e., the groove depth of each part of the avoidance groove 3 is the same. This arrangement ensures that the cigarettes do not interfere with the groove bottom during the splicing process, thereby ensuring the integrity of the cigarettes and preventing them from being damaged.

[0048] Note that the above are merely preferred embodiments of the present invention and the technical principles employed. Those skilled in the art will appreciate that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments, and substitutions are possible for those skilled in the art without departing from the scope of protection of the present invention. Therefore, while the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments and may include many other equivalent embodiments without departing from the scope of the present invention. The scope of the present invention is determined by the scope of the appended claims.

[0049] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. The terms "first position" and "second position" refer to two different positions.

[0050] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connections, detachable connections, or integral connections; mechanical connections, electrical connections; direct connections, indirect connections through an intermediate medium, and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

Claims

1. A washboard for cooperating with a splicing drum to splice cigarettes and filters, characterized in that: The rubbing board has an arc-shaped rubbing surface, the rubbing surface has a rubbing area (1) and two cigarette carrying areas (2) located on opposite sides of the rubbing area (1) along the length direction of the rubbing board, and the rubbing surface has two avoidance grooves (3) spaced apart along the length direction, the two avoidance grooves (3) are arranged in a one-to-one correspondence with the two cigarette carrying areas (2), and along the length direction of the rubbing board, each of the avoidance grooves (3) extends from the rubbing area (1) to the inside of the corresponding cigarette carrying area (2).

2. The washboard according to claim 1, wherein The groove depth of the avoidance groove (3) is 1 mm to 3 mm.

3. The washboard according to claim 1, wherein The avoidance groove (3) has a first edge and a second edge arranged opposite to each other along the length direction, the second edge is located in the cigarette carrying area (2), and the distance between the first edge and the edge of the adjacent twisting area (1) is W, and W is 0-3mm.

4. The washboard according to claim 1, wherein The avoidance groove (3) has a first edge and a second edge arranged opposite to each other along the length direction, the second edge is located in the cigarette carrying area (2), and the distance between the side edge of the cigarette carrying area (2) away from the twisting area (1) and the second edge is 24mm-28mm.

5. The washboard according to claim 1, wherein The avoidance groove (3) passes through the washboard along the width direction of the washboard.

6. The washboard according to claim 1, wherein The bottom surface of the avoidance groove (3) is an arc-shaped surface adapted to the splicing surface.

7. The washboard according to any one of claims 1 to 6, characterized in that: The two avoidance grooves (3) are symmetrically arranged on both sides of the center line of the longitudinal direction of the splicing area (1).

8. The washboard according to any one of claims 1 to 6, characterized in that: The width of the cigarette carrying area (2) is L, and L is 51mm-53mm.

9. The washboard according to any one of claims 1 to 6, characterized in that: The surface of the rubbing area (1) is provided with rubbing lines.

10. A cigarette making machine, comprising a splicing drum, characterized in that: The cigarette making machine further comprises a washboard as claimed in any one of claims 1 to 9, wherein the rubbing surface is opposite to the rubbing drum and is spaced apart from each other.

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