A timing belt adjustment device for cigarette pack conveying

Abstract

This invention relates to the field of tobacco equipment technology, and more particularly to a timing belt adjustment device for tobacco pack conveying, comprising: a flange sleeve, including an outer ring and an inner sleeve, both of which are axially connected. The outer ring is used to connect to a wall plate, and the inner sleeve is rotatably inserted within the inner circumference of the outer ring, with the inner circumference of the inner sleeve being eccentrically positioned to the outer circumference; and a wheel axle, rotatably inserted within the inner circumference of the inner sleeve, for connecting a timing pulley, which in turn connects to a timing belt. By designing the flange sleeve as a rotatably adjustable split-type eccentric sleeve structure, with the outer ring connected to the wall plate and fixed in place, rotating the eccentrically positioned inner sleeve allows for vertical adjustment of the wheel axle within the inner circumference of the inner sleeve. Simultaneously, this causes the vertical positions of the timing pulley and timing belt mounted on the wheel axle to change accordingly, thereby achieving vertical adjustment of the timing belt.

Description

Technical Field

[0001] This invention relates to the field of tobacco equipment technology, and in particular to a timing belt adjustment device for tobacco pack conveying. Background Technology

[0002] The cigarette packaging machine mainly wraps cigarettes in folded inner lining paper, attaches white cardboard, and then completes the packaging work of wrapping the label paper and transparent paper. The purpose is to make the cigarettes easy to carry while keeping them moist and fragrant, extending their shelf life, and further highlighting the product grade and brand culture.

[0003] In the prior art, the tobacco pack conveying process is as follows: Figure 1 As shown, belts 2 and 3 continuously receive vertical cigarette packs 4 from the lug belt 6. When the cigarette pack 4 enters the appearance inspection box 1, the camera inside the appearance inspection box 1 will perform appearance inspection on the cigarette pack 4. Cigarette packs 4 that fail the inspection will be rejected at the cylinder 5. Qualified cigarette packs 4 will continue to be conveyed until they are received by the upper and lower synchronous belts 8. This is the entire process flow of the cigarette pack in this part. Through the process flow analysis, it can be understood that belts 2 and 3 are needed because appearance inspection and photography require as much inspection of the product surface as possible. Therefore, belts 2 and 3 are designed as narrow strips with a width of only 6mm, with two belts on each side, one long and one short, clamping the cigarette pack 4 forward. In order to ensure that the belts are always taut, belt length 7 is continuously tensioned by spring force.

[0004] In actual production, variations in the specifications of the double-channel cigarette pack cause instability in the conveying of cigarette pack 4 at the appearance inspection box 1, resulting in a 1-2mm deviation in its conveying horizontal height. For example... Figure 1 As shown by the dotted line, when a certain amount of cigarette pack 4 is transported to the junction of the upper and lower synchronous belts 8 and the belts 2 and 3, the cigarette pack 4 does not directly enter the center position of the upper and lower synchronous belts 8 due to its downward movement. Instead, the lower left corner of the cigarette pack 4 rubs against the lower synchronous belt. Since the lower synchronous belt is always rotating counterclockwise, the cigarette pack 4, which is moving forward, gains an upward force due to the wrapping angle of the lower synchronous belt and its accompanying rotation. Because the upper and lower synchronous belts 8 rotate very fast, the cigarette pack 4 is bounced upward a certain distance, which causes the upper left corner of the cigarette pack 4 to touch the upper synchronous belt. The resistance and force balance above the cigarette pack 4 is broken, directly causing the cigarette pack 4 to tilt backward and overturn.

[0005] The existing transmission designs for both upper and lower synchronous belts (8) are all fixed flange bearing structures. The transmission design structure of the upper synchronous belt is as follows: Figure 2As shown, the upper synchronous belt is mounted on the synchronous pulley 9, and the rotation of the synchronous pulley 9 drives the upper synchronous belt. The synchronous pulley 9 is fixedly mounted on the axle 10, which provides the rotational drive. The axle 10 is supported and positioned within the flange sleeve 12 by the bearing 11. The bearing 11 is fixed to the flange sleeve 12, which is then fixed to the wall plate 14 by the flange on its outer periphery through three screws 13. Although the wall plate 14 is adjustable, it is the main mounting plate for the entire output section of the cigarette packaging machine. Changes in the position of the wall plate 14 will affect all the components mounted on it. Therefore, the wall plate 14 is not suitable for adjustment at this point, making the transmission design of the upper synchronous belt a fixed, non-adjustable structure. The transmission design of the lower synchronous belt is similar and non-adjustable. Therefore, it is impossible to adjust the vertical position of the upper and lower synchronous belts 8 to prevent the cigarette pack 4 from colliding with them. The spacing between belts 2 and 3 is determined by the relative position between the bracket and the base plate. Since there are locating pins connecting the bracket and the base plate, this area cannot be adjusted from a design perspective. This results in the cigarette pack 4 sagging, which cannot be avoided through adjustment. Furthermore, the spacing between the upper and lower synchronous belts 8 and belts 2 and 3 cannot be adjusted. In addition, the elongation and wear of belts 2 and 3 are unavoidable. All these factors combined mean that the cigarette pack tipping problem in the ZB418 model remains unresolved. Summary of the Invention

[0006] In view of the above-mentioned deficiencies of the prior art, the technical problem to be solved by the present invention is to provide a timing belt adjustment device for tobacco pack conveying, which can realize the vertical adjustment of the timing belt.

[0007] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0008] This invention provides a timing belt adjustment device for cigarette pack conveying, comprising: a flange sleeve, including an outer ring and an inner sleeve, both of which are axially connected, the outer ring being used to connect to a wall plate, and the inner sleeve being rotatably inserted within the inner circumference of the outer ring, the inner circumference of the inner sleeve being eccentrically arranged with respect to the outer circumference of the inner sleeve; and a wheel axle, rotatably inserted within the inner circumference of the inner sleeve, the wheel axle being used to connect to a timing pulley, and the timing pulley being used to connect to a timing belt.

[0009] Preferably, the eccentricity between the inner circumference and the outer circumference of the inner sleeve is 1.5mm-2.5mm.

[0010] Preferably, the outer ring is provided with a plurality of connecting holes spaced apart along the circumference, the connecting holes penetrating the outer circumference and the inner circumference of the outer ring along the radial direction, the inner sleeve is provided with a plurality of adjusting holes spaced apart along the circumference, the adjusting holes penetrating the outer circumference and the inner circumference of the inner sleeve along the radial direction, and at least one connecting hole and at least one adjusting hole are detachably connected by a connector.

[0011] Preferably, both the adjusting hole and the connecting hole are threaded holes with internal threads, and the connecting piece is a screw that is threadedly connected to the threaded hole.

[0012] Preferably, the outer ring is provided with a plurality of mounting holes spaced apart along the circumference for connection to the wall panel by screws. The mounting holes penetrate the outer ring along the axial direction, and the mounting holes and the connecting holes are staggered along the circumference of the outer ring.

[0013] Preferably, the axle is supported within the inner circumference of the inner sleeve by multiple pairs of bearings.

[0014] Compared with the prior art, the present invention has significant progress:

[0015] The synchronous belt adjustment device for cigarette pack conveying of the present invention designs the flange sleeve as a rotatable and adjustable split eccentric sleeve structure. With the outer ring connected to the wall plate and fixed, the vertical position of the wheel axle passing through the inner circumference of the inner sleeve is adjusted by rotating the inner sleeve which is eccentrically set on the inner and outer circumferences. At the same time, the vertical position of the synchronous belt pulley and the synchronous belt on the wheel axle changes together, thereby realizing the vertical position adjustment of the synchronous belt. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the tobacco pack conveying process in the prior art.

[0017] Figure 2 This is a schematic diagram of the split structure of the transmission design of the upper synchronous belt in the existing technology.

[0018] Figure 3 This is a schematic diagram of the split structure of the synchronous belt adjustment device for tobacco pack conveying according to an embodiment of the present invention.

[0019] Figure 4 This is a comparative schematic diagram of the eccentric adjustment of the synchronous belt adjustment device for tobacco pack conveying according to an embodiment of the present invention.

[0020] The reference numerals in the attached figures are explained as follows:

[0021] 1. Appearance Inspection Box

[0022] 2 and 3 pairs of belts

[0023] 4 cigarette packs

[0024] 5 cylinders

[0025] 6. Leather belt with protruding lugs

[0026] 7. Belt tensioning

[0027] 8. Upper and lower timing belts

[0028] 9. Synchronous Belt Pulley

[0029] 10 wheel axles

[0030] 11 bearings

[0031] 12 Flange sleeve

[0032] 13 screws

[0033] 14 Wall panels

[0034] 100 Outer ring

[0035] 101. Inner circumference of the outer ring

[0036] 102 Outer circumference of the outer ring

[0037] 103 Connecting hole

[0038] 104 mounting holes

[0039] 200 inner sleeve

[0040] 201 Inner circumference of the inner sleeve

[0041] 202 Outer circumference of the inner sleeve

[0042] 203 Adjustment Hole

[0043] 300 wheel axle

[0044] 400 connector

[0045] 500 bearing

[0046] 600 bushing

[0047] 700 stop ring Detailed Implementation

[0048] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings. These embodiments are for illustrative purposes only and are not intended to limit the scope of the invention.

[0049] In the description of this invention, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing the invention and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the invention. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0050] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0051] Furthermore, in the description of this invention, unless otherwise stated, "a plurality of" means two or more.

[0052] like Figure 3 and Figure 4 The image shows an embodiment of the synchronous belt adjustment device for tobacco package conveying according to the present invention. This embodiment of the synchronous belt adjustment device for tobacco package conveying includes a flange sleeve and a wheel axle 300.

[0053] The flange sleeve includes an outer ring 100 and an inner sleeve 200. Both the outer ring 100 and the inner sleeve 200 are axially connected. The outer ring 100 is used to connect and fix to a fixed wall panel, thereby connecting and fixing the flange sleeve to the wall panel. The inner sleeve 200 is rotatably inserted within the inner circumference 101 of the outer ring. By rotating the inner sleeve 200, the relative position of the inner sleeve 200 and the outer ring 100 in the circumferential direction can be adjusted. After adjustment, the inner sleeve 200 is positioned within the inner circumference 101 of the outer ring and remains relatively fixed to the outer ring 100. The outer circumference 202 of the inner sleeve is adapted to the inner circumference 101 of the outer ring and can be rotated relative to each other. The center of the outer circumference 202 of the inner sleeve coincides with the center of the inner circumference 101 of the outer ring. The inner circumference 201 of the inner sleeve and the outer circumference 202 of the inner sleeve are eccentrically set. Thus, when the outer ring 100 is stationary and the inner sleeve 200 is rotated, the center of the outer circumference 202 of the inner sleeve remains coincident with the center of the inner circumference 101 of the outer ring, while the center of the inner circumference 201 of the inner sleeve is offset vertically relative to the center of the inner circumference 101 of the outer ring.

[0054] The axle 300 is rotatably inserted within the inner circumference 201 of the inner sleeve. The axle 300 connects to the timing pulley, which in turn connects to the timing belt. The axle 300 is driven to rotate, thereby rotating the timing pulley and driving the timing belt. Because the axle 300 is concentrically positioned within the inner circumference 201 of the inner sleeve, rotating the inner sleeve 200 adjusts the vertical position of the center of the inner circumference 201, causing the vertical position of the axle 300 to change synchronously. This, in turn, causes the vertical positions of the timing pulley and the timing belt to change together, thus achieving the adjustment of the timing belt's vertical position.

[0055] Therefore, the timing belt adjustment device for cigarette pack conveying in this embodiment designs the flange sleeve as a rotatable and adjustable split eccentric sleeve structure. With the outer ring 100 connected to the wall plate and fixed, the inner sleeve 200, which is eccentrically set on the inner and outer circumferences, is rotated to adjust the vertical position of the wheel axle 300 passing through the inner circumference 201 of the inner sleeve, thereby achieving the purpose of adjusting the vertical position of the timing belt.

[0056] See Figure 4 As shown in Figure 4a, this represents the state where the center of the inner circumference 201 of the inner sleeve is at its highest position above the center of the inner circumference 101 of the outer ring. At this point, the distance between the center of the inner circumference 201 and the center of the inner circumference 101 of the outer ring is the eccentricity L between the inner circumference 201 and the outer circumference 202 of the inner sleeve. The wheel axle 300 and the timing pulley and timing belt mounted on the wheel axle 300 are at their highest adjustable positions. In this state, rotating the inner sleeve 200 180° switches it to the state where the center of the inner circumference 201 is at its lowest position below the center of the inner circumference 101 of the outer ring (e.g., ...). Figure 4 As shown in Figure 4b), at this time, the distance between the center of the inner circumference 201 of the inner sleeve and the center of the inner circumference 101 of the outer sleeve is also the eccentricity L between the inner circumference 201 and the outer circumference 202 of the inner sleeve. The vertical position of the axle 300 and the timing pulley and timing belt mounted on the axle 300 are at the lowest adjustable position. According to the actual application needs, the vertical position adjustment range of the timing belt can be controlled by controlling the rotation angle of the inner sleeve 200.

[0057] In this embodiment, preferably, the eccentricity L between the inner circumference 201 and the outer circumference 202 of the inner sleeve is 1.5mm-2.5mm. More preferably, the eccentricity L between the inner circumference 201 and the outer circumference 202 of the inner sleeve is 2mm.

[0058] See Figure 1In this embodiment, preferably, the outer ring 100 is provided with a plurality of connecting holes 103 spaced apart along the circumference. The connecting holes 103 penetrate the outer circumference 102 and the inner circumference 101 of the outer ring 100 radially. The inner sleeve 200 is provided with a plurality of adjusting holes 203 spaced apart along the circumference. The adjusting holes 203 penetrate the outer circumference 202 and the inner circumference 201 of the inner sleeve 200 radially. At least one connecting hole 103 and at least one adjusting hole 203 are detachably connected by a connector 400. When it is necessary to adjust the vertical position of the timing belt, the connector 400 is removed, so that the inner sleeve 200 can be rotated. The inner sleeve 200 is rotated by a corresponding angle according to the adjustment requirements. When the inner sleeve 200 is rotated to the position, the axis of at least one connecting hole 103 should coincide with the axis of at least one adjusting hole 203, so that the inner sleeve 200 and the outer ring 100 can be reconnected and fixed by the connector 400 after being rotated to the position. The number and spacing angle of the connecting holes 103 and adjusting holes 203 determine the adjustable range of the synchronous belt's vertical position, which can be designed according to actual needs. For example, two connecting holes 103 can be provided on the outer ring 100, with the two connecting holes 103 spaced 120° apart. Correspondingly, at least two adjusting holes 203 can be provided on the inner sleeve 200. Compared to the flange sleeve 12 in the prior art, the thickness of the outer ring 100 of the flange sleeve in this embodiment is increased along the axial direction, so as to add connecting holes 103 that penetrate to the inner circumference 101 of the outer ring on the outer circumference 102 of the outer ring.

[0059] Preferably, the adjusting hole 203 on the inner sleeve 200 and the connecting hole 103 on the outer ring 100 are both threaded holes with internal threads, and the connecting piece 400 is a screw that is threadedly connected to the threaded hole. Connecting the inner sleeve 200 and the outer ring 100 with screws has the advantages of convenient assembly and disassembly and easy operation.

[0060] In this embodiment, preferably, the outer ring 100 is provided with a plurality of mounting holes 104 spaced apart along its circumference. The mounting holes 104 penetrate the outer ring 100 along its axial direction and are used to connect to the wall panel by screws, thereby achieving a connection and fixation between the outer ring 100 and the wall panel. The mounting holes 104 and the connecting holes 103 are staggered along the circumference of the outer ring 100 to avoid mutual interference. Preferably, there are three mounting holes 104, which are evenly spaced along the circumference of the outer ring 100.

[0061] In this embodiment, to accommodate the installation dimensions of the inner sleeve 200 and increase the stability of the axle 300, preferably, the axle 300 is supported within the inner circumference 201 of the inner sleeve by multiple pairs of bearings 500. Increasing the number of bearings 500 can improve the load-bearing capacity and enhance stability. More preferably, the axle 300 is supported within the inner circumference 201 of the inner sleeve by two pairs, totaling four bearings 500. Both pairs of bearings 500 are located at both ends of the axle 300, with a bushing 600 in the middle. Retaining rings 700 are provided between both ends of the bushing 600 and the adjacent bearings 500.

[0062] The tobacco pack conveyor timing belt adjustment device of this embodiment is applied to Figure 1 and Figure 2 The existing synchronous belt shown in the prior art replaces the original transmission design structure of the upper synchronous belt. The outer ring 100 of the flange sleeve of the cigarette pack conveying synchronous belt adjustment device of this embodiment is connected and fixed to the wall plate 14, and the wheel axle 300 is connected to the synchronous belt pulley 9. The upper synchronous belt installed on the synchronous belt pulley 9 can be adjusted vertically through the cigarette pack conveying synchronous belt adjustment device of this embodiment, thereby effectively solving the problem of small pack tipping that has long plagued production line production and improving the stability of cigarette pack conveying.

[0063] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and substitutions can be made without departing from the technical principles of the present invention, and these improvements and substitutions should also be considered within the scope of protection of the present invention.

Claims

1. A timing belt adjustment device for cigarette pack conveying, characterized in that, include: The flange sleeve includes an outer ring (100) and an inner sleeve (200) that are both axially connected. The outer ring (100) is used to connect with the wall panel. The inner sleeve (200) is rotatably inserted in the inner circumference (101) of the outer ring. The inner circumference (201) of the inner sleeve and the outer circumference (202) of the inner sleeve are eccentrically arranged. A wheel axle (300) is rotatably inserted within the inner circumference (201) of the inner sleeve. The wheel axle (300) is used to connect a timing pulley, and the timing pulley is used to connect a timing belt. The outer ring (100) is provided with a plurality of connecting holes (103) spaced apart along the circumference. The connecting holes (103) penetrate the outer circumference (102) and the inner circumference (101) of the outer ring (100) radially. The inner sleeve (200) is provided with a plurality of adjusting holes (203) spaced apart along the circumference. The adjusting holes (203) penetrate the outer circumference (202) and the inner circumference (201) of the inner sleeve (200) radially. At least one of the connecting holes (103) and at least one of the adjusting holes (203) are detachably connected by a connector (400).

2. The synchronous belt adjustment device for tobacco package conveying according to claim 1, characterized in that, The eccentricity between the inner circumference (201) and the outer circumference (202) of the inner sleeve is 1.5mm-2.5mm.

3. The synchronous belt adjustment device for tobacco package conveying according to claim 1, characterized in that, The adjusting hole (203) and the connecting hole (103) are both threaded holes with internal threads, and the connecting piece (400) is a screw that is threadedly connected to the threaded hole.

4. The synchronous belt adjustment device for tobacco package conveying according to claim 1, characterized in that, The outer ring (100) is provided with a plurality of mounting holes (104) spaced apart along the circumference for connecting to the wall panel by screws. The mounting holes (104) penetrate the outer ring (100) along the axial direction. The mounting holes (104) and the connecting holes (103) are staggered along the circumference of the outer ring (100).

5. The synchronous belt adjustment device for tobacco package conveying according to claim 1, characterized in that, The axle (300) is supported within the inner circumference (201) of the inner sleeve by multiple pairs of bearings (500).

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