A production device for a variable diameter filter rod

Abstract

A production device of a variable diameter filter rod relates to the technical field of tobacco production equipment, and comprises a filter rod forming machine production line provided with a forming cavity (1), a pair of filter rod outer diameter forming rollers (2) arranged on the production line close to the outlet end of the forming cavity (1), and the filter rod outer diameter forming rollers (2) are rotatably connected with a rack, and the circumferential surfaces of the two filter rod outer diameter forming rollers (2) are provided with mutually matched outer diameter extrusion grooves (3), and the filter rod strip coming out of the forming cavity (1) is extruded and formed by the outer diameter extrusion grooves (3) between the two filter rod outer diameter forming rollers (2). The device has the advantages of simple structure, easy operation, stable production quality and high efficiency.

Description

Technical Field

[0001] This utility model relates to the technical field of tobacco production equipment, specifically to a production device for producing variable diameter filter rods for tobacco. Background Technology

[0002] In the tobacco industry, filter rods, as a crucial component of cigarettes, directly impact cigarette quality and consumer health through their filtration performance. With increasing consumer focus on health and increasingly stringent requirements from the tobacco industry to reduce tar and other harmful substances, developing filter rods with high-efficiency filtration has become a key research focus. Variable-diameter filter rods, by altering their inner or outer diameter, increase the flow path and residence time of smoke within the filter, thereby enhancing the filter's ability to trap and adsorb harmful substances. However, current variable-diameter filter rod production equipment on the market suffers from numerous problems. For example, some existing production equipment, due to its complex structure, increases the difficulty of operation during production. Furthermore, some equipment struggles to precisely control the variable diameter of the filter rod during production, leading to unstable product quality and low production efficiency. Summary of the Invention

[0003] The technical problem to be solved by this utility model is to provide a production device for variable diameter filter rods that is simple in structure, easy to operate, produces stable quality and has high efficiency.

[0004] The technical solution of this utility model is: a production device for variable diameter filter rods, including a filter rod forming machine production line with a forming cavity, a pair of filter rod outer diameter forming rollers are provided on the production line near the outlet end of the forming cavity, the filter rod outer diameter forming rollers are rotatably connected to the frame, and the circumferential surfaces of the two filter rod outer diameter forming rollers are provided with mutually cooperating outer diameter extrusion grooves, and the filter rod strips coming out of the forming cavity are extruded and formed by the outer diameter extrusion grooves between the two filter rod outer diameter forming rollers.

[0005] The technical advantages of this utility model are: simple structure, easy operation, stable production quality and high efficiency. Attached Figure Description

[0006] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the circumferential unfolded structure of the filter rod outer diameter forming roller of this utility model; Figure 3 This is a schematic diagram of the cross-sectional structure of the inner core of this utility model. Detailed Implementation

[0007] like Figure 1 , 2As shown in Figure 3, a production apparatus for variable diameter filter rods includes a filter rod forming machine production line with a forming cavity 1. A pair of filter rod outer diameter forming rollers 2 are arranged on the production line near the outlet end of the forming cavity 1. The filter rod outer diameter forming rollers 2 are rotatably connected to the machine frame. The circumferential surfaces of the two filter rod outer diameter forming rollers 2 are provided with mutually cooperating outer diameter extrusion grooves 3 whose width and depth vary regularly. The filter rod strips exiting the forming cavity 1 are then extruded and formed between the two filter rod outer diameter forming rollers 2 by the outer diameter extrusion grooves 3. After the above-mentioned extrusion by the rollers, a variable diameter filter rod with a regularly changing outer diameter can be obtained.

[0008] The outer diameter extrusion groove 3 is formed by a smooth transition and connection of several shuttle-shaped grooves.

[0009] The outer diameter extrusion groove 3 has a semi-circular cross-section. After being extruded through the outer diameter extrusion groove, the filter rod is composed of multiple smoothly transitioned spindle-shaped sections connected together. The linear velocity of the outer diameter extrusion groove is consistent with the extrusion speed of the filter rod strip exiting the forming cavity. This results in a uniform and neat external shape.

[0010] The inlet end of the forming cavity 1 is equipped with an inner hole forming device consisting of an inner core 4, a straight pull rod 5, a slide rod 6, a guide sleeve 7, a connecting rod 8, a crank 9, and a drive shaft 10. The inner core 4 is spindle-shaped and is fixed to one end of the straight pull rod 5. The other end of the straight pull rod 5 is fixed to one end of the slide rod 6. The slide rod 6 can slide linearly through the guide sleeve 7, which is fixed on the frame. The two ends of the connecting rod 8 are hinged to the other end of the slide rod 6 and one end of the crank 9, respectively. The crank 9 is fixedly connected to the drive shaft 10. The crank moves in a circular motion with the drive shaft, which drives the slide rod to move in a reciprocating linear motion along the guide sleeve through the connecting rod, thereby pulling the inner core continuously in the forming cavity to form a continuous beaded inner hole in the filter rod. The shape and length of the forming hole can be changed by changing the core with different shapes and adjusting the pulling frequency.

[0011] The cross-section of the inner core 4 is circular.

[0012] The surface of the inner core 4 is provided with several longitudinal grooves.

Claims

1. A production apparatus for variable diameter filter rods, comprising a filter rod forming machine production line with a forming cavity (1), characterized in that, A pair of filter rod outer diameter forming rollers (2) are provided on the production line near the outlet end of the forming cavity (1). The filter rod outer diameter forming rollers (2) are rotatably connected to the frame. The circumferential surfaces of the two filter rod outer diameter forming rollers (2) are provided with mutually cooperating outer diameter extrusion grooves (3). The filter rod strips coming out of the forming cavity (1) are then extruded and formed by the outer diameter extrusion grooves (3) between the two filter rod outer diameter forming rollers (2).

2. The production apparatus for variable diameter filter rods as described in claim 1, characterized in that, The outer diameter extrusion groove (3) is formed by a smooth transition of several shuttle-shaped grooves.

3. The production apparatus for variable diameter filter rods as described in claim 1 or 2, characterized in that, The cross-section of the outer diameter extrusion groove (3) is semi-circular.

4. The production apparatus for variable diameter filter rods as described in claim 1, characterized in that, The inlet end of the forming cavity (1) is provided with an inner hole forming device consisting of an inner hole core (4), a straight pull rod (5), a slide rod (6), a guide sleeve (7), a connecting rod (8), a crank (9) and a drive shaft (10). The inner hole core (4) is spindle-shaped and is fixed at one end of the straight pull rod (5). The other end of the straight pull rod (5) is fixed at one end of the slide rod (6). The slide rod (6) can slide linearly through the guide sleeve (7) fixed on the frame. The two ends of the connecting rod (8) are respectively hinged to the other end of the slide rod (6) and one end of the crank (9). The crank (9) is fixedly connected to the drive shaft (10).

5. The production apparatus for variable diameter filter rods as described in claim 4, characterized in that, The cross-section of the inner core (4) is circular.

6. The production apparatus for variable diameter filter rods as described in claim 5, characterized in that, The surface of the inner core (4) is provided with several longitudinal grooves.

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