Roller damping device and transparent paper packaging machine

Abstract

The utility model discloses a roller damping device and a transparent paper packaging machine, and relates to the technical field of cigarette packaging machinery, in particular to the roller damping device which comprises a supporting assembly used for coaxially and rotatably installing a roller, and an installing assembly arranged between the supporting assembly and a rack, the mounting position of the supporting assembly can be adjusted in the rotation axis direction of the roller; the outer ring of the bearing pack and the inner hole wall of the roller are coaxially and fixedly mounted; the inner ring of the bearing pack and the supporting assembly are coaxially mounted; according to the roller damping device and the transparent paper packaging machine, through the effect of the supporting assembly, the inner ring and the outer ring of the bearing set in the roller bear acting force in different directions, the acting force is parallel to the rotation axis of the roller, then the friction force between the balls in the bearing set and the inner ring and the outer ring of the bearing set is increased, and then the rotation damping of the roller is increased; meanwhile, a mounting assembly is additionally arranged, so that the damping force of the roller is adjustable.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette packaging machinery, and more specifically, to a drum damping device. In addition, the utility model also relates to a transparent paper packaging machine including the above drum damping device. Background Art

[0002] In the YB55 small pack transparent paper packaging machine in the ZB45 / ZB25 unit of the domestic cigarette industry, most of the transparent paper cigarette packs are folded by two upper and lower drums before entering the small transparent forming wheel. The upper and lower drums will rotate under the friction of the transparent paper of the cigarette pack. The higher the production speed of the equipment, the faster the rotation speed of the upper and lower drums. When the small pack transparent paper packaging machine decelerates from high-speed production operation to automatic stop and standby, the upper and lower drums will not decelerate immediately due to rotational inertia, so that the linear speed on the surfaces of the two drums is greater than the speed at which the cigarette pack passes through. This speed difference will cause rubbing on the transparent paper on the surface of the cigarette pack, resulting in poor wrapping of the transparent paper and product quality defects.

[0003] In summary, how to provide a drum damping device and a transparent paper packaging machine that can avoid the continuous rotation of the drum under the action of inertia after the packaging machine stops is an urgent problem to be solved by those skilled in the art at present. Summary of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a drum damping device. Through the action of the support component, the inner and outer rings of the bearing group in the drum bear acting forces in different directions, and the acting forces are parallel to the rotation axis of the drum. Furthermore, the friction between the balls in the bearing group and the inner and outer rings of the bearing group is increased, thereby increasing the rotational damping of the drum. At the same time, an installation component is added to make the damping force of the drum adjustable.

[0005] Another purpose of the utility model is to provide a transparent paper packaging machine including the above drum damping device, which has the same technical features and can achieve the same effects.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A drum damping device includes:

[0008] A support component, which is used for coaxially and rotatably installing a drum. An installation component is arranged between the support component and the frame so that the support component can adjust the installation position along the rotation axis direction of the drum;

[0009] Bearing set, the outer ring of the bearing set is coaxially and fixedly installed with the inner hole wall of the drum; the inner ring of the bearing set is coaxially installed with the support assembly; the drum and the support assembly can apply opposite-direction acting forces to the outer ring and the inner ring of the bearing set, and the direction of the acting force is parallel to the center line direction of the bearing set.

[0010] Preferably, the support assembly includes a support shaft in the form of a stepped shaft, and the inner ring of the bearing set abuts against the shaft shoulder of the support shaft.

[0011] Preferably, the bearing set includes a first bearing and a second bearing;

[0012] The outer ring of the first bearing is coaxially and fixedly installed with the inner hole wall of the drum, and the inner ring is coaxially and slidably installed with the support assembly;

[0013] The outer ring of the second bearing is coaxially and slidably installed with the inner hole wall of the drum, and the inner ring of the second bearing is coaxially and fixedly installed with the support assembly;

[0014] A spring is arranged between the outer ring of the first bearing and the outer ring of the second bearing, and the length direction of the spring is consistent with the center line direction of the first bearing and the second bearing.

[0015] Preferably, the support assembly includes a support shaft in the form of a stepped shaft, the inner ring of the first bearing is coaxially and slidably installed with the support shaft, and the inner ring of the second bearing is coaxially installed with the support shaft and abuts against the shaft shoulder of the support shaft;

[0016] The shaft shoulder and the spring can apply opposite-direction acting forces to the inner ring and the outer ring of the second bearing, and the direction of the acting force is parallel to the center line direction of the second bearing.

[0017] Preferably, the fit between the outer ring of the second bearing and the inner hole wall of the drum is a clearance fit or an interference fit, and the spring is a helical spring.

[0018] Preferably, the fit between the inner ring of the first bearing and the support shaft is a clearance fit or an interference fit.

[0019] Preferably, the support assembly further includes a connecting seat, a long strip-shaped hole is arranged in the connecting seat, the center line of the long strip-shaped hole is perpendicular to the rotary axis of the drum, and the length direction of the long strip-shaped hole is parallel to the rotary axis direction of the drum.

[0020] Preferably, a chute is arranged in the frame, a threaded hole is arranged in the chute, and the direction of the chute is consistent with the rotary axis direction of the drum;

[0021] The support assembly further includes a connecting seat which is slidably installed in the chute, and a locking bolt in the long strip-shaped hole is threadedly connected to the threaded hole, and the locking bolt fixes and locks the connecting seat to the frame.

[0022] A transparent paper packaging machine includes the drum damping device described in any one of the above.

[0023] The drum damping device provided by the present utility model has at least the following beneficial effects compared with the prior art:

[0024] 1. An axial force is applied to the inner ring of the bearing group through the support assembly, and an opposite-direction force is applied to the outer ring of the bearing group through the drum, so that opposite-direction forces are applied to the balls in the middle by the inner and outer rings of the bearing group, and this force is in the same direction as the rotation axis direction of the drum. Furthermore, the normal pressure between the outer and inner rings of the bearing shaft and the balls increases, and thus the friction between the outer and inner rings of the bearing group and the balls increases, increasing the rotational resistance of the bearing group, and further achieving the effect of generating damping during the rotation of the drum. Therefore, after the packaging machine stops, the drum can quickly eliminate the continuous rotation caused by inertia.

[0025] 2. At the same time, an installation assembly with an adjustable installation position is provided between the support assembly and the frame, and the adjustment direction is the rotation axis of the drum, that is, by changing the relative position relationship between the support assembly and the frame, different magnitudes of forces can be applied to the inner ring of the bearing group by the support assembly, and thus the rotational resistance of the bearing group can be changed, thereby realizing the adjustment of the magnitude of the drum rotation damping.

[0026] The transparent paper packaging machine provided by the present utility model includes the above-mentioned drum damping device and has the same beneficial effects. Description of the Drawings

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the following drawings are only the embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0028] Figure 1 It is an exploded view of the parts of the specific drum damping device provided by the present utility model;

[0029] Figure 2 It is a cross-sectional view after installation of the specific drum damping device provided by the present utility model;

[0030] Figure 3 It is a schematic diagram of the installation structure of the drum in the specific transparent paper packaging machine provided by the present utility model.

[0031] Figures 1 - 3 In:

[0032] 1. Drum; 2. Bearing set; 201. First bearing; 202. Second bearing; 3. Spring; 4. Support assembly; 401. Support shaft; 402. Connecting seat; 5. Locking bolt; 6. Frame. Specific implementation manner

[0033] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0034] The core of the present invention is to provide a drum damping device. Through the action of the support assembly, the inner ring and the outer ring of the bearing set in the drum bear acting forces in different directions, and the acting force is parallel to the rotation axis of the drum. Furthermore, the friction between the balls in the bearing set and the inner ring and the outer ring of the bearing set is increased, thereby increasing the rotational damping of the drum. At the same time, an installation assembly is added to make the damping force of the drum adjustable.

[0035] Another core of the present invention is to provide a transparent paper packaging machine including the above drum damping device, which has the same technical features and can achieve the same effects.

[0036] Please refer to Figures 1 - 3 , a drum damping device, comprising:

[0037] A support assembly 4 for coaxially rotatably mounting a drum 1. An installation assembly is provided between the support assembly 4 and a frame 6 so that the support assembly 4 can adjust its installation position along the rotation axis direction of the drum 1;

[0038] A bearing set 2, the outer ring of the bearing set 2 is coaxially and fixedly mounted on the inner hole wall of the drum 1; the inner ring of the bearing set 2 is coaxially mounted with the support assembly 4; the drum 1 and the support assembly 4 can apply acting forces in opposite directions to the outer ring and the inner ring of the bearing set 2, and the direction of the acting force is parallel to the center line direction of the bearing set 2;

[0039] When assembling the drum 1, a bearing group 2 and a support assembly 4 are used for rotational installation. Among them, the outer ring of the bearing group 2 is coaxially fixed with the drum 1 and rotates synchronously with the drum 1; the inner ring of the bearing group 2 is coaxially installed with the support assembly 4. In some embodiments, there is an interference fit between the inner ring and the support assembly 4, that is, there is no relative movement between the inner ring and the support assembly 4. When the support assembly 4 applies an axial force, the drum 1 will synchronously apply a reverse force to the outer ring of the bearing group 2. Through the transmission of the inner ring and the outer ring, that is, the balls in the bearing group 2 receive forces from opposite directions from the inner ring and the outer ring, and the direction of the force is consistent with the direction of the rotation axis of the drum 1. That is, the normal pressure between the balls and the outer ring and the inner ring increases synchronously, thereby increasing the frictional resistance between the balls and the inner ring and the outer ring, that is, increasing the resistance when the inner ring and the outer ring rotate relative to each other, making the rotation of the drum 1 have a damping feeling. When the packaging machine stops, the drum 1 can quickly stop under the damping action of the bearing group 2;

[0040] At the same time, an installation assembly with an adjustable installation position is provided between the support assembly 4 and the frame 6, and the adjustment direction of the installation position is the same as the direction in which the support assembly 4 applies a force to the inner ring of the bearing group 2. That is, by changing the installation position of the support assembly 4, the magnitude of the force applied by the support assembly 4 to the inner ring of the bearing group 2 can be changed, that is, the magnitude of the frictional force between the balls in the bearing group 2 and the outer ring and the inner ring can be changed, and further the damping magnitude when the drum 1 rotates can be changed.

[0041] It should be noted that the drum 1 rotates at a high speed during operation. Therefore, when selecting bearings for the bearing group 2, deep groove ball bearings and radial ball bearings are preferred.

[0042] In some embodiments, the support assembly 4 includes a support shaft 401 in the form of a stepped shaft, and the inner ring of the bearing group 2 abuts against the shaft shoulder of the support shaft 401;

[0043] By using a support shaft 401 in the form of a stepped shaft, the inner ring of the bearing group 2 is abutted by the shaft shoulder, and the axial force is transmitted through the shaft shoulder. Among them, a transition fit or a clearance fit is adopted between the inner ring and the support shaft 401.

[0044] In some embodiments, the bearing group 2 includes a first bearing 201 and a second bearing 202;

[0045] The outer ring of the first bearing 201 is coaxially and fixedly installed on the inner hole wall of the drum 1, and the inner ring is coaxially and slidably installed with the support assembly 4;

[0046] The outer ring of the second bearing 202 is coaxially and slidably installed on the inner hole wall of the drum 1, and the inner ring of the second bearing 202 is coaxially and fixedly installed with the support assembly 4;

[0047] A spring 3 is provided between the outer rings of the first bearing 201 and the second bearing 202, and the length direction of the spring 3 is consistent with the center line direction of the first bearing 201 and the second bearing 202;

[0048] As Figure 2 shown, two sets of bearings are used inside the bearing group 2. The first bearing 201 is used for the installation of the drum 1. That is, an interference fit is adopted between the outer ring of the first bearing 201 and the inner hole wall of the drum 1, and a transition fit or clearance fit is adopted between the inner ring and the support assembly 4; a transition fit or clearance fit is adopted between the outer ring of the second bearing 202 and the inner hole wall of the drum 1. That is, the outer ring of the second bearing 202 and the drum 1 can rotate relative to each other and slide axially. An interference fit is adopted between the inner ring of the second bearing 202 and the support assembly 4. That is, no axial relative movement can occur between the inner ring and the support assembly 4. At this time, by adjusting the installation position of the support assembly 4, the distance between the inner rings of the second bearing 202 and the first bearing 201 can be changed. When the distance between the two is reduced, the outer rings of the first bearing 201 and the second bearing 202 are affected by the spring 3. Specifically, the spring 3 is compressed and applies elastic forces to both ends, and transmits the rotational torque between the outer rings of the first bearing 201 and the second bearing 202. That is, the inner and outer rings of the second bearing 202 are subjected to opposite acting forces, so that the inner and outer rings of the second bearing 202 apply normal pressures in different directions to the middle ball bearings, thereby increasing the rotational damping of the second bearing 202. At the same time, with the help of the spring 3, torque is transmitted between the outer rings of the first bearing 201 and the second bearing 202. When the damping of the second bearing 202 increases, the rotational damping of the drum 1 increases synchronously;

[0049] And a clearance fit is adopted between the outer ring of the second bearing 202 and the inner hole wall of the drum 1. That is, the outer ring of the second bearing 202 can move relative to the drum 1 along its own axis. That is, as the installation position of the support assembly 4 changes, the compression amount of the spring 3 can be changed, that is, the elastic force generated by the spring 3 can be changed, so as to adjust the damping size;

[0050] The design of using double bearings facilitates the installation of the existing drum 1. Specifically, taking the bearing installed on the existing drum 1 as the first bearing 201, adding the spring 3 and the second bearing 202 can increase the rolling damping.

[0051] In some embodiments, the support assembly 4 includes a support shaft 401 in the form of a stepped shaft. The inner ring of the first bearing 201 is coaxially and slidably installed with the support shaft 401, and the inner ring of the second bearing 202 is coaxially installed with the support shaft 401 and abuts against the shoulder of the support shaft 401;

[0052] The shoulder and the spring 3 can apply opposite acting forces to the inner and outer rings of the second bearing 202, and the direction of the acting force is parallel to the center line direction of the second bearing 202;

[0053] The support shaft 401 is in the form of a stepped shaft, and the inner ring of the second bearing 202 is limited by its shaft shoulder to restrict the relative axial movement between the inner ring of the second bearing 202 and the support assembly 4. At this time, the inner rings of both the second bearing 202 and the first bearing 201 can adopt an interference fit or a clearance fit with the support assembly 4, which is convenient for the installation of the bearing group 2.

[0054] In some embodiments, there is an interference fit or a clearance fit between the outer ring of the second bearing 202 and the inner hole wall of the drum 1, and the spring 3 is a helical spring;

[0055] There is an interference or clearance fit between the outer ring of the second bearing 202 and the inner hole wall of the drum 1, so that there is no direct torque transmission between the drum 1 and the outer ring of the second bearing 202. The torque transmission path is that the drum 1 transmits to the outer ring of the first bearing 201, and then is transmitted to the outer ring of the second bearing 202 through the spring 3. And the spring 3 is a helical spring. When the damping of the second bearing 202 is too large and the rotational speed of the drum 1 is relatively high, it allows the spring 3 to undergo torsional deformation so that there is a rotational speed difference between the outer ring of the first bearing 201 and the outer ring of the second bearing 202. Until the rotational speed of the drum 1 drops to the set value, the rotational speed difference between the outer ring of the first bearing 201 and the outer ring of the second bearing 202 is gradually reduced until the rotational speeds of the two are the same and the spring 3 resets.

[0056] In some embodiments, there is an interference fit or a clearance fit between the inner ring of the first bearing 201 and the support shaft 401;

[0057] An interference fit or a clearance fit is adopted between the inner ring of the first bearing 201 and the support shaft 401, which can effectively ensure the coaxiality of the first bearing 201 and the second bearing 202. And when the installation position of the support assembly 4 is adjusted, it can cause an axial displacement between the support shaft 401 and the inner ring of the first bearing 201 without affecting the installation of the first bearing 201.

[0058] In some embodiments, the support assembly 4 further includes a connecting seat 402. A long strip hole is provided in the connecting seat 402. The center line of the long strip hole is perpendicular to the rotation axis of the drum 1, and the length direction of the long strip hole is parallel to the rotation axis direction of the drum 1;

[0059] The fixing method of the support assembly 4 is to set a locking bolt 5 in the long strip hole of the connecting seat 402 and thread-connect the locking bolt 5 with the frame 6, thereby locking the support assembly 4 and the frame 6. By providing the long strip hole, before the locking bolt 5 is tightened, its position can be adjusted in the long strip hole, that is, the installation position of the support assembly 4 is changed.

[0060] In some embodiments, a chute is provided in the frame 6, and a threaded hole is provided in the chute. The direction of the chute is consistent with the rotation axis direction of the drum 1;

[0061] The support assembly 4 further includes a connecting seat 402. The connecting seat 402 is slidably installed in the chute, and the locking bolt 5 in the long strip-shaped hole is threadedly connected to the threaded hole. The locking bolt 5 fixes and locks the connecting seat 402 to the frame 6;

[0062] As Figure 1 shown, a chute is provided on the frame 6 to limit the position adjustment direction of the connecting seat 402 and ensure the stable position of the connecting seat 402 during the working process.

[0063] In addition to the drum damping device disclosed in each of the above embodiments, the present invention further provides a transparent paper packaging machine including the above drum damping device. For the structures of other parts of the transparent paper packaging machine, reference may be made to the prior art and will not be elaborated herein.

[0064] The various embodiments in this specification are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. The same or similar parts among the various embodiments may be referred to each other.

[0065] The above has introduced in detail the drum damping device and the transparent paper packaging machine provided by the present invention. Specific examples are used herein to elaborate on the principle and implementation manner of the present invention. The description of the above embodiments is only used to help understand the method and its core idea of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the protection scope of the claims of the present invention.

Claims

1. A drum damping device, characterized in that, Comprising: A support assembly (4) for coaxially and rotatably mounting a drum (1), an installation assembly being provided between the support assembly (4) and a frame (6) such that the support assembly (4) can adjust its installation position along the axis of rotation of the drum (1); A bearing set (2), the outer ring of the bearing set (2) being coaxially and fixedly mounted on the inner hole wall of the drum (1); the inner ring of the bearing set (2) being coaxially mounted with the support assembly (4); the drum (1) and the support assembly (4) being capable of applying acting forces in opposite directions to the outer ring and the inner ring of the bearing set (2), the direction of the acting force being parallel to the central axis direction of the bearing set (2).

2. The drum damping device according to claim 1, characterized in that, The support assembly (4) includes a support shaft (401) in the form of a stepped shaft, and the inner ring of the bearing set (2) abuts against the shaft shoulder of the support shaft (401).

3. The drum damping device according to claim 1, characterized in that The bearing set (2) includes a first bearing (201) and a second bearing (202); The outer ring of the first bearing (201) is coaxially and fixedly mounted on the inner hole wall of the drum (1), and the inner ring is coaxially and slidably mounted with the support assembly (4); The outer ring of the second bearing (202) is coaxially and slidably mounted on the inner hole wall of the drum (1), and the inner ring of the second bearing (202) is coaxially and fixedly mounted with the support assembly (4); A spring (3) is provided between the outer ring of the first bearing (201) and the outer ring of the second bearing (202), and the length direction of the spring (3) is consistent with the central axis direction of the first bearing (201) and the second bearing (202).

4. The drum damping device according to claim 3, characterized in that The support assembly (4) includes a support shaft (401) in the form of a stepped shaft, the inner ring of the first bearing (201) is coaxially and slidably mounted with the support shaft (401), and the inner ring of the second bearing (202) is coaxially mounted with the support shaft (401) and abuts against the shaft shoulder of the support shaft (401); The shaft shoulder and the spring (3) can apply acting forces in opposite directions to the inner ring and the outer ring of the second bearing (202), and the direction of the acting force is parallel to the central axis direction of the second bearing (202).

5. The drum damping device according to claim 3, characterized in that, A clearance fit or an interference fit is provided between the outer ring of the second bearing (202) and the inner hole wall of the drum (1), and the spring (3) is a helical spring.

6. The drum damping device according to claim 4, characterized in that, A clearance fit or an interference fit is provided between the inner ring of the first bearing (201) and the support shaft (401).

7. The drum damping device according to any one of claims 1-6, characterized in that, The support assembly (4) further includes a connecting seat (402), a long strip-shaped hole being provided in the connecting seat (402), the central axis of the long strip-shaped hole being perpendicular to the axis of rotation of the drum (1), and the length direction of the long strip-shaped hole being parallel to the axis of rotation direction of the drum (1).

8. The drum damping device according to claim 7, characterized in that, A chute is provided in the frame (6), a threaded hole being provided in the chute, and the direction of the chute is consistent with the axis of rotation direction of the drum (1); The support assembly (4) further includes a connecting seat (402). The connecting seat (402) is slidably installed in the chute, and a locking bolt (5) in the long strip-shaped hole is threadedly connected to the threaded hole. The locking bolt (5) fixes and locks the connecting seat (402) to the frame (6).

9. A transparent paper wrapping machine, characterized in that, It includes the drum damping device according to any one of claims 1-8.

Images