A separating device for short rod-like material

Abstract

The utility model provides a kind of separating device for short stick material, including cutting drum, two-stage separating drum mechanism, detection drum;Two-stage separating drum mechanism includes first direct drive motor, second direct drive motor, first separating drum assembly and second separating drum assembly;First separating drum assembly includes first left separating cone drum and first right separating cone drum, and the right end surface of first left separating cone drum is obliquely attached with the left end surface of first right separating cone drum, and second separating drum assembly includes second left separating cone drum and second right separating cone drum, and the right end surface of second left separating cone drum is obliquely attached with the left end surface of second right separating cone drum;The circumference of second left separating cone drum is connected with the circumference of first left separating cone drum, and the circumference of second right separating cone drum is connected with the circumference of first right separating cone drum.The separating device can carry out two-stage axial separation and parallel handover, to avoid impact cigarette.

Description

Technical Field

[0001] This utility model relates to the field of cigarette separation equipment, specifically, to a separation device for short rod-shaped materials. Background Technology

[0002] During the cigarette manufacturing process, cigarettes cut by the cutting drum need to be axially separated by a separation drum and then sent to the inspection drum for testing. Currently, the cigarette separation drums in the receiving machine mainly use a cam structure for one-time separation and a banana shaft structure for two-time separation. However, heated cigarettes typically use a reverse-rolling process, where the heating section is in the middle and the filter section is at both ends. This causes the cam structure for one-time separation to increase the impact on the cigarettes during the high-speed rotation of the drum. Meanwhile, the banana shaft structure for two-time separation uses a bevel gear drive, and the meshing position of the gear end face requires a dust cover made of ethylene-vinyl acetate copolymer resin. This dust cover needs to be replaced regularly, resulting in high maintenance costs, and the drum structure occupies a large space, which cannot meet the production requirements of heated cigarette units.

[0003] Utility model patent application CN108016829A discloses a drum device with axial separation function, including a conveying drum with a plurality of tobacco-receiving bodies on its circumference. These bodies convey tobacco sticks input from an upstream drum to a downstream drum. The conveying drum has an internal offset mechanism corresponding to the tobacco-receiving bodies. This offset mechanism includes a swing disk, which is movably connected to each tobacco-receiving body. When the swing disk rotates, it drives the connected tobacco-receiving bodies to move axially, achieving axial separation of the tobacco sticks adsorbed on the left and right tobacco-receiving bodies by a certain distance during conveying, facilitating the installation of filters in the cut tobacco sticks. This drum device with axial separation function can quickly adjust the separation distance of tobacco sticks for different specifications, improving production efficiency. However, the disclosed structure of this drum device still uses a cam structure for one-time separation, failing to reduce the impact caused by the high-speed rotation and handover of the tobacco sticks during drum rotation. Utility Model Content

[0004] In order to achieve axial separation and parallel connection of cigarettes through the conical drum, avoid impacting the cigarettes, and reduce maintenance costs, the technical solution adopted by this utility model is: a separation device for short rod-shaped materials, including a cutting drum, a two-stage separation drum mechanism, and a detection drum; The cutting drum is used to cut the rod-shaped material and then pass it to the two-stage separating drum mechanism; The two-stage separation drum mechanism is sandwiched between the cutting drum and the detection drum, and is used to perform two axial separations on the cut rod-shaped material and transfer the separated rod-shaped material to the detection drum. The two-stage separation drum mechanism includes a first direct drive motor, a second direct drive motor, a first separation drum assembly, and a second separation drum assembly; The first separating drum assembly includes a first left separating cone drum and a first right separating cone drum. The right end face of the first left separating cone drum is inclined to fit against the left end face of the first right separating cone drum, so that each group of rod-shaped materials after cutting is axially separated for the first time as the first left separating cone drum and the first right separating cone drum rotate. The second separation drum assembly includes a second direct drive motor, a second left separation cone drum, and a second right separation cone drum, wherein the right end face of the second left separation cone drum is inclined to fit against the left end face of the second right separation cone drum. The circumferential surface of the second left separating cone drum is connected to the circumferential surface of the first left separating cone drum, and the circumferential surface of the second right separating cone drum is connected to the circumferential surface of the first right separating cone drum, so that each group of rod-shaped materials that was initially axially separated is axially separated a second time as the second left separating cone drum and the second right separating cone drum rotate.

[0005] Beneficial effects: The first separating drum assembly can perform the first axial separation of each group of rod-shaped materials after cutting, and then the second separating drum assembly can perform the second axial separation of each group of rod-shaped materials after the first axial separation, thereby shortening the distance of each axial separation and avoiding impact on the cigarette.

[0006] Based on the above, drum grooves are respectively formed on the outer peripheral surface of the first separating drum assembly and the outer peripheral surface of the second separating drum assembly. Negative pressure holes are formed in the drum grooves, and the drum grooves are used to transfer rod-shaped materials by relying on negative pressure.

[0007] Beneficial effects: By relying on negative pressure to transfer rod-shaped materials, a smooth and timely handover can be achieved.

[0008] Based on the above, the first left separating cone drum wheel includes a left eccentric valve seat, a left meshing internal gear, a left meshing external gear, a first flange shaft, and a left separating cone drum wheel rim; The left meshing external gear is mounted on the first flange shaft, the left meshing internal gear is rotatably mounted on the left eccentric valve seat, and the left separating cone drum wheel rim is mounted on the outer circumferential surface of the left meshing internal gear; The first flange shaft rotates and is eccentrically mounted inside the left eccentric valve seat, and the left meshing internal gear meshes and rotates with the left meshing external gear; The first right separation cone drum wheel includes a right eccentric valve seat, a right separation cone drum wheel rim, a right meshing internal gear, a right meshing external gear, and a first spline shaft; The right meshing external gear is mounted on the first splined shaft, the right meshing internal gear is rotatably mounted on the right eccentric valve seat, and the right separation cone drum wheel rim is mounted on the outer circumferential surface of the right meshing internal gear; The first splined shaft rotates and is eccentrically mounted inside the right eccentric valve seat, and the right meshing internal gear meshes and rotates with the right meshing external gear; The first direct drive motor is provided with a motor spindle, which is connected to the first flange shaft via a first universal coupling, and the first flange shaft is connected to the first spline shaft via a second universal coupling. The left end of the left eccentric valve seat is connected to an eccentric flange, and the left eccentric valve seat is connected to the right eccentric valve seat by connecting bolts.

[0009] Beneficial effects: The above structure enables the rod-shaped material to be axially separated by the tilted installation relationship of the first left and first right separation cone drums. At the same time, it can also ensure that the rod-shaped material does not move on the first left and first right separation cone drums.

[0010] Based on the above, the left eccentric valve seat and the right eccentric valve seat are respectively provided with interconnected negative pressure air chambers, and the negative pressure air chambers are connected to the negative pressure holes.

[0011] Beneficial effect: It can use negative pressure to smoothly transfer rod-shaped materials.

[0012] Based on the above, the left eccentric valve seat and the right eccentric valve seat are respectively provided with meshing external gear mounting grooves; the inner ends of the left eccentric valve seat and the right eccentric valve seat are respectively provided with universal joint mounting grooves.

[0013] Based on the above, the axis of the first flange shaft intersects the axis of the first spline shaft.

[0014] Based on the above, the first separation drum assembly and the second separation drum assembly have the same transmission method.

[0015] Beneficial effect: It can ensure that the outer peripheral surfaces of the first separation drum assembly and the second separation drum assembly maintain a smooth and consistent connection at all times.

[0016] Based on the above, the pitch of the cutting drum, the pitch of the two-stage separation drum mechanism, and the pitch of the detection drum are equal.

[0017] Based on the above, the two-stage separation drum mechanism and the detection drum are transmitted in parallel.

[0018] Beneficial effects: It can ensure the stability of rod-shaped materials during handover and transfer, and prevent rods from falling off.

[0019] Based on the above, the inclination angle of the interface between the first left separating cone drum and the first right separating cone drum, and the inclination angle of the interface between the second left separating cone drum and the second right separating cone drum are both α; the included angle between the first flange shaft and the first spline shaft is (180°-2α).

[0020] This utility model has substantial features and advancements compared to existing technologies. Specifically, it provides a separation device for short rod-shaped materials. By designing a first separation drum assembly and a second separation drum assembly, it achieves the separation distance of the short rod-shaped materials through secondary separation. Specifically, the first separation cone drum assembly can achieve parallel contact with the cutting drum. The second separation cone drum assembly can achieve parallel contact with the detection drum. The pitch of the first and second separation cone drum assemblies is equal to the pitch of the cutting and detection drums. The contact surfaces of the first and second separation drums have an inclination angle, and the contact between the drums is achieved through negative pressure adsorption and release, thus ensuring a smooth transfer of the cigarette.

[0021] Therefore, this separation device for short rod-shaped materials does not employ a cam structure for one-step separation. Instead, it uses a secondary separation method to reduce the impact of cigarettes during high-speed drum rotation, making it suitable for the production of heated cigarettes using a reverse-rolling process. Furthermore, compared to a banana shaft structure with secondary separation, it avoids the drawbacks of end-face bevel gear transmission, reduces maintenance costs, and has a more compact structure.

[0022] Furthermore, the device's conical drum wheel is split into two parts from the center and connected and fixed with screws, facilitating disassembly and installation. This separation device for short rod-shaped materials can achieve precise, stable, and high-speed transfer of short rod-shaped materials. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the installation position of a separation device for short rod-shaped materials provided by this utility model.

[0024] Figure 2 This is a schematic diagram of the overall structure of a separation device for short rod-shaped materials provided by this utility model.

[0025] Figure 3 This is a schematic cross-sectional view of the first separating drum assembly in a separating device for short rod-shaped materials provided by this utility model.

[0026] Figure 4 This is a schematic diagram of the left eccentric valve seat structure in a separation device for short rod-shaped materials provided by this utility model.

[0027] In the diagram: 1. Two-stage separation drum mechanism; 2. First eccentric shaft assembly; 3. Second eccentric shaft assembly; 4. Cutting drum; 5. First separation drum assembly; 6. Second separation drum assembly; 7. Detection drum; 8. First direct drive motor; 9. Second direct drive motor; 10. First left separation cone drum; 11. First right separation cone drum; 12. First splined shaft; 13. Second left separation cone drum; 14. Second right separation cone drum; 15. Second splined shaft; 16. Right meshing... 17. Right meshing internal gear; 18. Right eccentric valve seat; 19. Pressure cap; 20. Spacer; 21. Splined shaft seat; 22. Second universal coupling; 23. First flange shaft; 24. Left eccentric valve seat; 25. Left meshing internal gear; 26. Left meshing external gear; 27. Eccentric flange; 28. First universal coupling; 29. ​​Motor spindle; 30. First bearing; 31. Negative pressure air chamber; 32. Universal shaft mounting slot; 33. Meshing external gear mounting slot. Detailed Implementation

[0028] The technical solution of this utility model will be further described in detail below through specific embodiments.

[0029] Example 1 This embodiment provides a separation device for short rod-shaped materials, such as... Figure 1 , Figure 2 , Figure 3 , Figure 4 As shown, it includes a cutting drum 4, a two-stage separation drum mechanism 1, and a detection drum 7.

[0030] The cutting drum 4 is used to cut the rod-shaped material and then pass it to the two-stage separation drum mechanism 1. The two-stage separation drum mechanism 1 is sandwiched between the cutting drum 4 and the detection drum 7, and is used to perform two axial separations on the cut rod-shaped material and pass the separated rod-shaped material to the detection drum 7.

[0031] The two-stage separation drum mechanism 1 includes a first direct drive motor 8, a second direct drive motor 9, a first separation drum assembly 5, and a second separation drum assembly 6.

[0032] The first separating drum assembly 5 includes a first left separating cone drum 10 and a first right separating cone drum 11. The right end face of the first left separating cone drum 10 is inclined to fit against the left end face of the first right separating cone drum 11, so that each group of cut rod-shaped materials is axially separated for the first time as the first left separating cone drum 10 and the first right separating cone drum 11 rotate.

[0033] The second separation drum assembly 6 includes a second direct drive motor 9, a second left separation cone drum 13, and a second right separation cone drum 14. The right end face of the second left separation cone drum 13 is inclined and fits against the left end face of the second right separation cone drum 14.

[0034] The circumferential surface of the second left separating cone drum 13 is connected to the circumferential surface of the first left separating cone drum 10. The circumferential surface of the second right separating cone drum 14 is connected to the circumferential surface of the first right separating cone drum 11, so that each group of rod-shaped materials that was initially axially separated is axially separated a second time as the second left separating cone drum 13 and the second right separating cone drum 14 rotate.

[0035] Specifically, such as Figure 3 As shown, the first left separating cone drum 10 includes a left eccentric valve seat 24, a left meshing internal gear 25, a left meshing external gear 26, a first flange shaft 23, and a left separating cone drum wheel rim.

[0036] The left meshing external gear 26 is mounted on the first flange shaft 23. The left meshing internal gear 25 is rotatably mounted on the left eccentric valve seat 24, and the left separation cone drum wheel rim is mounted on the outer circumferential surface of the left meshing internal gear 25.

[0037] The first flange shaft 23 rotates and is eccentrically mounted inside the left eccentric valve seat 24, and the left meshing internal gear 25 meshes and rotates with the left meshing external gear 26.

[0038] The first right separation cone drum 11 includes a right eccentric valve seat 18, a right separation cone drum rim, a right meshing internal gear 17, a right meshing external gear 16, and a first spline shaft 12.

[0039] The right meshing external gear 16 is mounted on the first splined shaft 12. The right meshing internal gear 17 is rotatably mounted on the right eccentric valve seat 18, and the right separation cone drum wheel rim is mounted on the outer circumferential surface of the right meshing internal gear.

[0040] The first splined shaft 12 rotates and is eccentrically mounted inside the right eccentric valve seat 18, and the right meshing internal gear 17 meshes and rotates with the right meshing external gear 16.

[0041] The first direct drive motor 8 is provided with a motor spindle 29, which is connected to the first flange shaft 23 via a first universal coupling 28. The first flange shaft 23 is connected to the first spline shaft 12 via a second universal coupling 22.

[0042] The left end of the left eccentric valve seat 24 is connected to an eccentric flange 27, and the left eccentric valve seat 24 is connected to the right eccentric valve seat 18 by connecting bolts.

[0043] Specifically, in this embodiment, the first separating drum assembly and the second separating drum assembly have the same transmission method.

[0044] That is, the main shaft of the second direct drive motor is connected to the second flange shaft via a third universal coupling, and the second flange shaft is connected to the second spline shaft 15 via a fourth universal coupling.

[0045] The second flange shaft and the second spline shaft 15 form the second eccentric shaft assembly 3. The first flange shaft 23 and the first spline shaft 12 form the first eccentric shaft assembly 2.

[0046] In this embodiment, the pitch of the cutting drum 4, the pitch of the two-stage separation drum mechanism 1, and the pitch of the detection drum 7 are equal.

[0047] Specifically, the right meshing internal gear 17 is connected to the right separating cone drum wheel rim via a pressure cap 19 and screws. A splined shaft seat 21 is sleeved on the outside of the first splined shaft 12, and a spacer 20 is sleeved on the outside of the splined shaft seat 21. A first bearing 30 is provided between the right meshing internal gear 17 and the right eccentric valve seat.

[0048] Example 2 This embodiment provides a separation device for short rod-shaped materials. The main difference from Embodiment 1 is that, in this embodiment, drum grooves are respectively opened on the outer peripheral surface of the first separation drum assembly 5 and the outer peripheral surface of the second separation drum assembly 6. Negative pressure holes are opened in the drum grooves, and the drum grooves are used to transfer the rod-shaped materials by relying on negative pressure.

[0049] Negative pressure air chambers 31 are respectively opened inside the left eccentric valve seat 24 and the right eccentric valve seat 18, and the negative pressure air chambers 31 are connected to the negative pressure holes.

[0050] Example 3 This embodiment provides a separation device for short rod-shaped materials. The main difference from Embodiment 1 is that, in this embodiment: the left eccentric valve seat 24 and the right eccentric valve seat 18 each have meshing external gear mounting grooves 33. The inner ends of the left eccentric valve seat 24 and the right eccentric valve seat 18 each have universal joint mounting grooves 32. The axis of the first flange shaft 23 intersects the axis of the first spline shaft 12.

[0051] Example 4 This embodiment provides a separation device for short rod-shaped materials. The main difference from Embodiment 1 is that in this embodiment: The two-stage separating drum mechanism 1 transmits power in parallel with the detection drum 7. The inclination angle of the interface between the first left separating cone drum 10 and the first right separating cone drum 11, and the inclination angle of the interface between the second left separating cone drum 13 and the second right separating cone drum 14 are both α. The included angle between the first flange shaft 23 and the first spline shaft is (180°-2α).

[0052] Specifically, the working process of this separation device for short rod-shaped materials is as follows: Taking the cross-sectional view of the first separate drum assembly as an example, the first direct drive motor 8 drives the motor spindle 29, which is connected to the first flange shaft 23 through the first universal coupling 28, and the connection form is a spline connection.

[0053] The first flange shaft 23 drives the left meshing external gear 26 via a flat key, realizing the meshing transmission between the internal and external gears of the left meshing internal gear 25. The left meshing internal gear 25 is fixed to the first left separating cone drum 10 by screws through the left-side cover, thereby driving the first left separating cone drum 10 to rotate.

[0054] The rotation of the first right separating cone drum 11 adopts the same internal transmission structure. The first splined shaft 12 is connected to the first flanged shaft 23 through the second universal coupling 22, and drives the meshing of internal and external gears through a flat key with the splined shaft seat 21. This ensures the synchronous rotation of the first right separating cone drum 11 and the first left separating cone drum 10. The first splined shaft 12 is externally sealed with a shaft cover. This transmission takes place entirely inside the drum, resulting in a more compact structure.

[0055] The left eccentric valve seat 24 and the right eccentric valve seat 18 are fixed together by locking bolts. Both the left eccentric valve seat 24 and the right eccentric valve seat 18 contain a negative pressure chamber and a positive pressure air chamber. The first left and first right separating cone drums have negative pressure holes. Together with the left eccentric valve seat 24, the right eccentric valve seat 18, and the gas distribution valve, the transfer between the drums is achieved through the adsorption and release of negative pressure, thus ensuring a smooth transfer of the cigarette. The left eccentric valve seat 24 is fixed to the wall plate via the eccentric flange 27 to achieve its positioning. The first direct drive motor 8 is fixed to the wall plate via the motor bracket to achieve the installation positioning of the first direct drive motor.

[0056] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of this utility model and not to limit it; although the utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications can still be made to the specific implementation of this utility model or equivalent substitutions can be made to some technical features without departing from the spirit of the technical solution of this utility model, and all such modifications and substitutions should be covered within the scope of the technical solution claimed by this utility model.

Claims

1. A separation device for short rod-shaped materials, characterized in that: Includes cutting drum, two-stage separation drum mechanism, and detection drum; The cutting drum is used to cut the rod-shaped material and then pass it to the two-stage separating drum mechanism; The two-stage separation drum mechanism is sandwiched between the cutting drum and the detection drum, and is used to perform two axial separations on the cut rod-shaped material and transfer the separated rod-shaped material to the detection drum. The two-stage separation drum mechanism includes a first direct drive motor, a second direct drive motor, a first separation drum assembly, and a second separation drum assembly; The first separating drum assembly includes a first left separating cone drum and a first right separating cone drum. The right end face of the first left separating cone drum is inclined to fit against the left end face of the first right separating cone drum, so that each group of rod-shaped materials after cutting is axially separated for the first time as the first left separating cone drum and the first right separating cone drum rotate. The second separation drum assembly includes a second left separation cone drum and a second right separation cone drum, wherein the right end face of the second left separation cone drum and the left end face of the second right separation cone drum are inclined to fit together; The circumferential surface of the second left separating cone drum is connected to the circumferential surface of the first left separating cone drum, and the circumferential surface of the second right separating cone drum is connected to the circumferential surface of the first right separating cone drum, so that each group of rod-shaped materials that was initially axially separated is axially separated a second time as the second left separating cone drum and the second right separating cone drum rotate.

2. The separation device for short rod-shaped materials according to claim 1, characterized in that: Drum grooves are respectively formed on the outer peripheral surface of the first separating drum assembly and the outer peripheral surface of the second separating drum assembly. Negative pressure holes are formed in the drum grooves, and the drum grooves are used to transfer rod-shaped materials by relying on negative pressure.

3. The separation device for short rod-shaped materials according to claim 2, characterized in that: The first left separating cone drum wheel includes a left eccentric valve seat, a left meshing internal gear, a left meshing external gear, a first flange shaft, and a left separating cone drum wheel rim; The left meshing external gear is mounted on the first flange shaft, the left meshing internal gear is rotatably mounted on the left eccentric valve seat, and the left separating cone drum wheel rim is mounted on the outer circumferential surface of the left meshing internal gear; The first flange shaft rotates and is eccentrically mounted inside the left eccentric valve seat, and the left meshing internal gear meshes and rotates with the left meshing external gear; The first right separation cone drum wheel includes a right eccentric valve seat, a right separation cone drum wheel rim, a right meshing internal gear, a right meshing external gear, and a first spline shaft; The right meshing external gear is mounted on the first splined shaft, the right meshing internal gear is rotatably mounted on the right eccentric valve seat, and the right separation cone drum wheel rim is mounted on the outer circumferential surface of the right meshing internal gear; The first splined shaft rotates and is eccentrically mounted inside the right eccentric valve seat, and the right meshing internal gear meshes and rotates with the right meshing external gear; The first direct drive motor is provided with a motor spindle, which is connected to the first flange shaft via a first universal coupling, and the first flange shaft is connected to the first spline shaft via a second universal coupling. The left end of the left eccentric valve seat is connected to an eccentric flange, and the left eccentric valve seat is connected to the right eccentric valve seat by connecting bolts.

4. A separation device for short rod-shaped materials according to claim 3, characterized in that: The left eccentric valve seat and the right eccentric valve seat are respectively provided with interconnected negative pressure air chambers, and the negative pressure air chambers are connected to the negative pressure hole.

5. A separation device for short rod-shaped materials according to claim 4, characterized in that: The left eccentric valve seat and the right eccentric valve seat are respectively provided with meshing external gear mounting grooves; the inner ends of the left eccentric valve seat and the right eccentric valve seat are respectively provided with universal joint mounting grooves.

6. A separation device for short rod-shaped materials according to claim 5, characterized in that: The axis of the first flange shaft intersects the axis of the first spline shaft.

7. A separation device for short rod-shaped materials according to any one of claims 1 to 6, characterized in that: The first separation drum assembly and the second separation drum assembly have the same transmission method.

8. A separation device for short rod-shaped materials according to any one of claims 1 to 6, characterized in that: The pitch of the cutting drum, the pitch of the two-stage separation drum mechanism, and the pitch of the detection drum are equal.

9. A separation device for short rod-shaped materials according to claim 8, characterized in that: The two-stage separation drum mechanism transmits power in parallel with the detection drum.

10. A separation device for short rod-shaped materials according to claim 6, characterized in that: The inclination angle of the interface between the first left separating cone drum and the first right separating cone drum, and the inclination angle of the interface between the second left separating cone drum and the second right separating cone drum are both α; the included angle between the first flange shaft and the first spline shaft is (180°-2α).

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