Turn-around device for ultra-short bars

Abstract

The utility model provides a turn-around device for ultra-short bar stock, which comprises a discharging wheel mechanism, a cone drum wheel positioning mechanism and a cone drum wheel group mechanism, a pair of discharging wheel grooves are arranged on the discharging wheel mechanism, the cone drum wheel group mechanism comprises a pair of cone drum wheels, the pair of cone drum wheels are arranged orthogonally and are respectively driven by a frameless motor, and the pair of cone drum wheels are driven by the frameless motor. Conical drum wheel grooves are respectively formed in the conical drum wheels; the cone drum wheel positioning mechanism comprises a box body supporting frame and a pair of box bodies, hollow cavities which are communicated with one another are formed in the box bodies respectively, the bottoms of the pair of box bodies are connected through adjusting screws and clamp elastic sealing gaskets, air valves which are communicated with the hollow cavities are arranged on the pair of box bodies respectively, and the air valves are connected with the hollow cavities. And vent holes which are intermittently communicated with the air valve are formed in the cone drum wheel groove. By means of the device, it can be guaranteed that the ultra-short bars are stably conveyed in the medium-high-speed turning and conveying process, the connection position is accurate, the bar disordering and bar falling phenomena are reduced, a negative pressure source is reduced, and the dead weight of equipment is reduced.

Description

Technical Field

[0001] The utility model relates to the field of tobacco filter rod production equipment, in particular to a turning device for ultra-short rod materials. Background Art

[0002] In the production process of heated cigarettes, the heated cigarettes are cut and separated in opposite directions. In order to ensure that all cigarettes are output in the same direction, a cigarette rolling and connecting unit that can turn the cigarettes around is required. Currently, most existing cigarette rolling and connecting units use cigarette cone drums for turning, which have a relatively complex structure and mostly use bevel gear transmission structures. There are defects such as high processing costs and precision requirements. At the same time, there are parts such as gas seats and bearings inside the cone drum, which leads to high production and maintenance costs and relatively cumbersome debugging steps.

[0003] In order to simplify the equipment structure, the utility model patent with the authorization announcement number CN205385862U discloses a cigarette turning device, in which the first mounting seat is fixed on the main wall panel of the machine by screws, the second mounting seat is installed on the middle panel, the first air distribution plate is fixed on the first mounting seat, the second air distribution plate is fixed on the second mounting seat, and the air distribution plate has corresponding negative pressure chambers and compressed air holes; the first servo motor is installed on the first air distribution plate, and the second servo motor is installed on the second air distribution plate; the locking sleeve is locked on the shaft of the servo motor by the locking screw; the first cover and the second cover are respectively fixed on the first locking sleeve and the second locking sleeve, the first adjustment screw and the second adjustment screw are respectively screwed into the first cover and the second cover, and the lower end surface of the adjustment screw is against the servo motor shaft. The cigarette turning device can easily adjust the gap between the two bevel gears. At the same time, the servo motors are used to provide the power source, and the transmission does not need grease lubrication, which avoids the risk of cigarettes being contaminated by grease. However, the cigarette turning device needs to be connected to multiple negative pressure sources and has a large deadweight. Utility Model Content

[0004] In order to ensure that the ultra-short bars are stably transferred and the handover position is accurate during the high-speed turning and transfer process, reduce the phenomenon of disordered bars and dropped bars, reduce the negative pressure source, and reduce the deadweight of the equipment, the technical solution adopted by the utility model is: a turning device for ultra-short bars, characterized in that it includes a discharge wheel mechanism, a cone drum wheel positioning mechanism, and a cone drum wheel assembly mechanism, wherein the cone drum wheel assembly mechanism is installed on the cone drum wheel positioning mechanism and is located on the same side of the discharge wheel mechanism;

[0005] The discharge wheel mechanism is provided with a pair of discharge wheel grooves, the conical drum wheel assembly mechanism comprises a pair of conical drum wheels, the pair of conical drum wheels are arranged orthogonally and are respectively driven by frameless motors, and the conical drum wheels are respectively provided with conical drum wheel grooves for receiving and transferring ultra-short rods from the discharge wheel grooves;

[0006] The conical drum wheel positioning mechanism includes a box support frame and a pair of boxes, wherein the boxes are respectively provided with interconnected hollow cavities, the bottoms of the pair of boxes are connected by adjusting screws and clamped with elastic sealing gaskets, the pair of boxes are respectively provided with air valves connected to the hollow cavities, and the conical drum wheel groove is provided with air holes intermittently connected to the air valves.

[0007] Based on the above, in order to cooperate with the different numbers of grooves of the wheel grooves of the unloading wheels on both sides, ensure stable transmission, accurate handover position, and reduce phenomena such as disordered rods and dropped rods, the axial angle of a pair of the conical drum wheels is an acute angle, the pitch of a pair of the conical drum wheels is the same, the pitch circle diameters of a pair of the conical drum wheels are different, and the ratio of the number of grooves of the conical drum wheel grooves on a pair of the conical drum wheels is N: (N±1).

[0008] Based on the above, the groove number ratio of a pair of discharge wheel grooves is 1:2 or 2:1.

[0009] Based on the above, in order to facilitate the reception of ultra-short rods from the outside and to facilitate the reception of ultra-short rods after turning from one of the conical drum wheel grooves, the unloading wheel mechanism includes a unloading wheel body, a pair of the unloading wheel grooves are respectively arranged along the length direction of the unloading wheel body, and one end of the unloading wheel body is transmission-connected to a servo motor.

[0010] Based on the above, in order to facilitate installation, the frameless motor includes a housing, a motor stator fixed on the housing, a motor rotor rotatably arranged on the housing and cooperating with the motor stator, and a motor shaft connected to the motor rotor.

[0011] Based on the above, in order to facilitate installation and adapt to the inclined installation position of the cone drum wheel, a flange shaft is inserted into the motor shaft, and the cone drum wheel is connected to one end of the flange shaft through a flange plate and a gland.

[0012] Based on the above, the shell is fixed on the lower side of the box body, and the air valve is fixed on the upper side of the box body.

[0013] Based on the above, in order to utilize negative pressure transmission, the hollow cavity is connected to a negative pressure source.

[0014] Based on the above, in order to ensure stable transfer and accurate handover position, at the handover point of ultra-short bar materials, the conical drum wheel groove is parallel to the discharge wheel groove and is arranged correspondingly up and down.

[0015] The utility model has substantial characteristics and progress compared with the prior art. Specifically, the turning device for ultra-short rods provided by the utility model mainly includes a discharge wheel mechanism, a conical drum wheel assembly mechanism and a conical drum wheel positioning mechanism. One of the conical drum wheels in the conical drum wheel assembly mechanism is used to receive the directional ultra-short rods transmitted by the discharge wheel from one side, and then transmit it to another conical drum wheel, and then transmit it to the other end of the discharge wheel. Since the two conical drum wheels are arranged on the same side of the discharge wheel and rotate relative to each other at a certain angle to transmit the ultra-short rods, through the above-mentioned transmission process, the ultra-short rods are transmitted from one end of the discharge wheel to the other end, and the effect of turning left and right is achieved.

[0016] At the same time, since the two conical drums are driven by separate frameless motors, the defects of gear transmission are avoided, and the production and maintenance costs are reduced. In addition, the conical drum positioning device in the turning device for ultra-short rods is composed of a left box and a right box, with an elastic sealing pad in the middle and adjustment screws on the box, which is convenient for adjusting the positions of the two conical drums, ensuring stable transmission and accurate handover positions, and can reduce the phenomenon of disordered rods and rod drops, so that the device can be suitable for medium and high-speed turning and transmission of directional ultra-short rods. At the same time, the device adopts a casting structure and connects the hollow cavities in the left and right boxes to share a negative pressure cavity, which can reduce the negative pressure source and reduce the weight of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The utility model is a schematic diagram of the overall structure of the turning device for ultra-short bars provided by the utility model.

[0018] Figure 2 The utility model is a schematic diagram of the internal structure of the turning device for ultra-short bars provided by the utility model.

[0019] Figure 3 The utility model is a schematic diagram of the structure of a discharge wheel mechanism in a turning device for ultra-short bar materials.

[0020] Figure 4 The utility model is a schematic diagram of the structure of a cone drum mechanism in a turning device for ultra-short bars.

[0021] In the figure: 1. servo motor; 2. left unloading wheel groove; 3. unloading wheel body; 4. right unloading wheel groove; 5. right frameless motor; 6. right box; 7. right conical drum wheel; 8. right conical drum wheel groove; 9. adjustment screw; 10. elastic sealing gasket; 11. left conical drum wheel; 12. left conical drum wheel groove; 13. left frameless motor; 14. left box; 15. box support frame; 16. flange shaft; 17. left air valve; 18. connecting pin; 19. right air valve; 20. motor shaft; 21. vent hole; 22. hollow cavity; 23. motor stator; 24. motor rotor; 25. flange. DETAILED DESCRIPTION

[0022] The technical solution of the utility model is further described in detail below through specific implementation methods.

[0023] Example 1

[0024] This embodiment provides a turning device for ultra-short bars, such as Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, it comprises a discharge wheel mechanism, a cone drum wheel positioning mechanism, and a cone drum wheel assembly mechanism. The cone drum wheel assembly mechanism is installed on the cone drum wheel positioning mechanism and is located on the same side of the discharge wheel mechanism.

[0025] A pair of unloading wheel grooves are provided on the unloading wheel mechanism. For the convenience of distinction, according to the distribution position, the pair of unloading wheel grooves are respectively marked as a left unloading wheel groove 2 and a right unloading wheel groove 4.

[0026] The conical drum wheel assembly mechanism includes a pair of conical drum wheels, which are arranged orthogonally and driven by frameless motors respectively. The conical drum wheels are respectively provided with conical drum wheel grooves for receiving and transferring ultra-short rods from the discharge wheel grooves.

[0027] For the convenience of distinction, according to the distribution position, a pair of cone drum wheels are respectively recorded as left cone drum wheel 11 and right cone drum wheel 7. The cone drum wheel groove is divided into left cone drum wheel groove 12 and right cone drum wheel groove 8. The frameless motor is respectively recorded as left frameless motor 13 and right frameless motor 5.

[0028] Specifically, Figure 2 The cone drum wheel positioning mechanism shown includes a box support frame 15 and a pair of boxes. The boxes are respectively provided with interconnected hollow cavities 22. The bottoms of the pair of boxes are connected by adjusting screws 9 and clamped with elastic sealing pads 10. The pair of boxes are respectively provided with air valves connected to the hollow cavities, and the cone drum wheel groove is provided with air holes 21 intermittently connected to the air valves. For the convenience of distinction, the pair of boxes are respectively recorded as the left box 14 and the right box 6 according to the distribution position. The air valves are divided into the left air valve 17 and the right air valve 19.

[0029] In this embodiment, in order to match the different numbers of grooves of the discharge wheel grooves on both sides, ensure stable transmission, accurate handover position, and reduce the phenomenon of disordered rods and dropped rods, the axis angle of the pair of conical drum wheels is an acute angle, and the groove number ratio of the conical drum wheel grooves on the pair of conical drum wheels is N: (N+1). The groove number ratio of the pair of discharge wheel grooves is 1:2.

[0030] Specifically, Figure 3As shown, in order to facilitate receiving ultra-short bars from the outside and receiving ultra-short bars after U-turning from one of the conical drum wheel grooves, the unloading wheel mechanism includes an unloading wheel body 3. A pair of unloading wheel grooves are respectively arranged along the length direction of the unloading wheel body, and one end of the unloading wheel body is transmission-connected to a servo motor 1.

[0031] like Figure 2 As shown, for ease of installation, the frameless motor includes a housing, a motor stator 23 fixed on the housing, a motor rotor 24 rotatably disposed on the housing and cooperating with the motor stator 23 , and a motor shaft 20 connected to the motor rotor 24 .

[0032] In order to facilitate installation and adapt to the inclined installation position of the cone drum, a flange shaft 16 is inserted into the motor shaft 20. The cone drum is connected to one end of the flange shaft 16 through a flange plate 25 and a gland. The shell is fixed to the lower side of the box, and the air valve is fixed to the upper side of the box through a connecting pin 18. In order to utilize negative pressure transmission, the hollow cavity 22 and the discharge wheel groove are respectively connected to a negative pressure source.

[0033] Example 2

[0034] The present embodiment provides a turning device for ultra-short rods, which differs from Embodiment 1 in that: in the present embodiment, in order to cooperate with the different numbers of grooves of the unloading wheels on both sides, ensure stable transmission, accurate handover position, and reduce the phenomenon of disordered rods and dropped rods, the axial angle of a pair of the conical drum wheels is an acute angle, the pitch of a pair of the conical drum wheels is the same, the pitch circle diameters of a pair of the conical drum wheels are different, and the ratio of the number of grooves of the conical drum wheel grooves on the pair of the conical drum wheels is N: (N-1).

[0035] Example 3

[0036] This embodiment provides a turning device for ultra-short bars, which is different from Embodiment 1 in that, in this embodiment: the ratio of the number of grooves of a pair of discharge wheel grooves is 2:1.

[0037] Example 4

[0038] The turning device for ultra-short bars differs from Example 1 in that, in this embodiment, in order to ensure stable transfer and accurate handover position, at the ultra-short bar handover point, the conical drum wheel groove is parallel to the discharge wheel groove and is arranged correspondingly up and down.

[0039] Specifically, the utility model provides a turning device for ultra-short bars. The specific working steps are as follows: Figure 2As shown, first, one of the wheel grooves on the unloading wheel mechanism receives the ultra-short bar from the outside, adsorbs it under the action of negative pressure, and transmits it to one of the cone drum wheels in the cone drum wheel assembly mechanism during the rotation process. At this intersection, the wheel groove on the cone drum wheel is connected to the corresponding air valve through the vent hole, and the cone drum wheel adsorbs the ultra-short bar and rotates under the drive of its own frameless motor and negative pressure adsorption.

[0040] When it rotates to correspond to the wheel groove on the other cone drum, the wheel groove on the previous cone drum is disconnected from the corresponding air valve through the vent hole, and the wheel groove on the other cone drum is connected to the corresponding air valve through the vent hole, and the ultra-short rod is transferred from the previous cone drum to the wheel groove on the other cone drum under the action of negative pressure. This cone drum also absorbs the ultra-short rod and rotates under its own frameless motor drive and negative pressure adsorption.

[0041] When it rotates to correspond to another wheel groove on the discharge wheel mechanism, the vent hole on the wheel groove is disconnected from the corresponding air valve, and under the negative pressure on the discharge wheel mechanism, the ultra-short bar is transferred to another wheel groove on the discharge wheel mechanism. After three rotations, the ultra-short bar is turned around in the left and right directions on the discharge wheel mechanism.

[0042] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the utility model can still be modified or some technical features can be replaced by equivalents without departing from the spirit of the technical solution of the utility model, which should be included in the scope of the technical solution for protection of the utility model.

Claims

1. A turning device for ultra-short bars, characterized in that: It comprises a discharge wheel mechanism, a cone drum wheel positioning mechanism, and a cone drum wheel assembly mechanism, wherein the cone drum wheel assembly mechanism is installed on the cone drum wheel positioning mechanism and is located on the same side of the discharge wheel mechanism; The discharge wheel mechanism is provided with a pair of discharge wheel grooves, the conical drum wheel assembly mechanism comprises a pair of conical drum wheels, the pair of conical drum wheels are arranged orthogonally and are respectively driven by frameless motors, and the conical drum wheels are respectively provided with conical drum wheel grooves for receiving and transferring ultra-short rods from the discharge wheel grooves; The conical drum wheel positioning mechanism includes a box support frame and a pair of boxes, wherein the boxes are respectively provided with interconnected hollow cavities, the bottoms of the pair of boxes are connected by adjusting screws and clamped with elastic sealing gaskets, the pair of boxes are respectively provided with air valves connected to the hollow cavities, and the conical drum wheel groove is provided with air holes intermittently connected to the air valves.

2. The turning device for ultra-short bars according to claim 1 is characterized in that: The angle between the axes of the pair of conical drum wheels is an acute angle, and the ratio of the number of grooves of the conical drum wheels on the pair of conical drum wheels is N: (N±1).

3. The turning device for ultra-short bars according to claim 1 is characterized in that: The groove number ratio of a pair of discharge wheel grooves is 1:2 or 2:

1.

4. The turning device for ultra-short bars according to claim 1, 2 or 3, characterized in that: The unloading wheel mechanism comprises an unloading wheel body, a pair of unloading wheel grooves are respectively arranged along the length direction of the unloading wheel body, and one end of the unloading wheel body is transmission-connected with a servo motor.

5. The turning device for ultra-short bars according to claim 1 is characterized in that: The frameless motor comprises a housing, a motor stator fixed on the housing, a motor rotor rotatably arranged on the housing and matched with the motor stator, and a motor shaft connected to the motor rotor.

6. The turning device for ultra-short bars according to claim 5, characterized in that: A flange shaft is inserted into the motor shaft, and the cone drum is connected to one end of the flange shaft through a flange plate and a gland.

7. The turning device for ultra-short bars according to claim 5, characterized in that: The shell is fixed on the lower side of the box body, and the air valve is fixed on the upper side of the box body.

8. The turning device for ultra-short bars according to claim 1, 2, 3 or 5, characterized in that: The hollow cavity is externally connected to a negative pressure source.

9. The turning device for ultra-short bars according to claim 1, characterized in that: At the ultra-short bar delivery point, the conical drum wheel groove is parallel to the discharge wheel groove and is arranged correspondingly up and down.

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