Automatic packing machine for slitting lines

Abstract

The present application relates to steel coil packing device technical field, specifically to a kind of automatic packing machine of longitudinal shear line, including base, rotating ring and support mechanism. Base is provided with vertical plate, rotating ring is rotatably installed on vertical plate. Support mechanism includes two support pieces, support piece includes first supporting roller, first supporting roller is arranged on base along the radial direction of steel coil and can be abutted with the end surface of steel coil, first supporting roller can revolve around the rotation axis of steel coil, and the speed of first supporting roller revolving around the rotation axis of steel coil is greater than the speed of steel coil rotation. The automatic packing machine of longitudinal shear line of the present application can improve the stability of steel coil by the clamping of first supporting roller, and can use the revolution and rotation cooperation of first supporting roller to flatten and compact the packing material that has been wound on steel coil, improve the tightness of steel coil winding, and further improve the packaging quality of steel coil.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of steel coil packaging devices, in particular to an automatic packaging machine for a slitting line. BACKGROUND

[0002] As a key equipment for processing metal coil into a specific width of steel coil, the slitting line usually includes the following steps: uncoiling, flattening, slitting and coiling. In order to avoid the problems such as coil scattering and edge damage caused by vibration and collision during transportation and storage, the steel coil needs to be packaged at the offline end of the slitting line. By winding the packaging tape around the outer periphery of the steel coil, the binding force of the packaging tape is used to fix the structure of the steel coil, thereby achieving protection of the steel coil.

[0003] Traditional steel coil packaging operations are mostly completed manually: the operator manually winds the packaging tape around the steel coil and then tightens and fixes it with a tool. However, the weight of the steel coil processed by the slitting line is usually large, and manual packaging not only has high labor intensity and low efficiency, but also is difficult to adapt to the continuous production rhythm of the slitting line. More importantly, during the process of carrying and turning over the steel coil, the operator is prone to safety risks due to the shaking and sliding of the steel coil, which poses a great safety hazard.

[0004] Chinese patent CN220924601U discloses a steel coil packaging device, which includes a packaging table, a support frame, a fixed plate, a packaging ring and a support base. When the packaging ring rotates, it drives the packaging material to wind around the steel coil. The support base is connected to the packaging table, and two first drive rollers are rotatably connected to the support base. The two first drive rollers drive the steel coil to rotate under the drive of a second servo motor, so that the packaging ring packages different parts of the steel coil, thereby achieving automatic packaging of the steel coil. However, when this scheme is used, the packaging material will exert an eccentric pulling force on the steel coil during winding, causing the steel coil to shake to a certain extent during winding. The shaking of the steel coil will make the packaging material unable to closely fit the surface of the steel coil, and gaps, slackness and other problems are likely to occur during winding, which cannot form uniform and firm binding, affecting the packaging quality and making it difficult to achieve comprehensive and effective protection of the steel coil. SUMMARY

[0005] The present application provides an automatic packaging machine for a slitting line to solve the problem that the existing automatic packaging machine causes the steel coil to shake during winding, which makes the packaging material unable to closely fit the surface of the steel coil, affecting the packaging quality and making it difficult to achieve comprehensive and effective protection of the steel coil.

[0006] The application discloses an automatic packaging machine for a longitudinal shearing line.

[0007] Further, the first supporting roller is a conical roller, and the small end of the first supporting roller is located on the side of the large end close to the center axis of the steel coil in the radial direction of the steel coil.

[0008] Further, the first supporting roller comprises an upper roller body, a middle roller body and a lower roller body; the upper roller body, the middle roller body and the lower roller body are sequentially arranged coaxially in the radial direction of the steel coil, and the upper roller body is located on the side of the lower roller body close to the center axis of the steel coil in the radial direction of the steel coil; the self-rotation direction of the upper roller body is the same as that of the lower roller body, and the self-rotation direction of the middle roller body is opposite to that of the upper roller body; the first protrusion is coaxially and fixedly arranged on the upper roller body, the second protrusion is coaxially and fixedly arranged on the middle roller body, and the third protrusion is coaxially and fixedly arranged on the lower roller body; the first protrusion, the second protrusion and the third protrusion are arc protrusions; the first protrusion, the second protrusion and the third protrusion each comprise a rotating section and a friction section; the rotating section and the friction section are sequentially arranged and fixedly connected in the circumferential direction of the upper roller body; the surface of the rotating section is smooth, and the surface of the friction section is rough; in the initial state, the rotating section of the upper roller body and the rotating section of the lower roller body are in abutment with the end surface of the steel coil, and the friction section of the middle roller body is in abutment with the end surface of the steel coil.

[0009] Further, the first supporting roller further comprises a rotating shaft, the rotating shaft is installed on the base, the rotating shaft is coaxially arranged with the upper roller body and rotationally connected with the upper roller body, a first transmission member is arranged between the upper roller body and the middle roller body, the first transmission member can make the rotation direction of the middle roller body opposite to the rotation direction of the upper roller body, a second transmission member is arranged between the middle roller body and the lower roller body, the second transmission member can make the rotation direction of the lower roller body opposite to the rotation direction of the middle roller body.

[0010] Further, the supporting member further comprises a second supporting roller, the second supporting roller is arranged along the radial direction of the steel coil and can abut against the end surface of the steel coil; the structure of the second supporting roller is the same as that of the first supporting roller; in the initial state, the friction section of the upper roller body and the friction section of the lower roller body of the second supporting roller all abut against the end surface of the steel coil, and the rotating section of the roller body abuts against the end surface of the steel coil; the first supporting roller and the second supporting roller located on the same side of the steel coil in the second direction are called a supporting group; in the initial state, the first supporting roller and the second supporting roller in one of the supporting groups are away from each other along the direction of the rotation axis of the steel coil, and the first supporting roller and the second supporting roller in the other supporting group are close to each other along the direction of the rotation axis of the steel coil; two driving groups are arranged on the base, the two driving groups are located on the two sides of the steel coil in the second direction, and the driving groups and the supporting groups are one-to-one correspondingly arranged; the driving groups are used to drive the first supporting roller and the second supporting roller in the corresponding supporting group to be away from or close to each other along the direction of the rotation axis of the steel coil, and when the first supporting roller and the second supporting roller in one of the supporting groups are close to each other along the rotation axis of the steel coil, the first supporting roller and the second supporting roller in the other supporting group can be away from each other along the rotation axis of the steel coil.

[0011] Further, the driving group comprises two driving chains; the two driving chains are sequentially arranged along the direction of the rotation axis of the steel coil, the rotation axes of the two driving chains are both arranged along the second direction, and the rotation directions of the two driving chains in the same driving group are opposite; a tooth plate is arranged on the rotating shaft of the first supporting roller and the rotating shaft of the second supporting roller, the tooth plate is one-to-one correspondingly arranged with the driving chain, and the tooth plate is clamped with the corresponding driving chain.

[0012] Further, the first supporting roller and the second supporting roller in the same supporting group are connected through a connecting plate, the connecting plate is installed on the base and is movably arranged along the second direction; two arc grooves are formed in the connecting plate, the two arc grooves are coaxially arranged with the steel coil, the rotating shaft of the first supporting roller is slidably connected with one of the arc grooves, and the rotating shaft of the second supporting roller is slidably connected with the other arc groove.

[0013] Further, the two connecting plates are connected through a screw rod, the screw rod is arranged along the second direction and is screwed with the two connecting plates, and the rotation of the screw rod can make the two connecting plates close to or away from each other along the second direction.

[0014] Further, two ends of the arc groove in the direction of the rotation axis of the steel coil are respectively referred to as a head end and a tail end, the arc lines where the first protrusion, the second protrusion and the third protrusion are located are all superior arcs, and when the rotation axis slides from the head end to the tail end of the arc groove, the first protrusion, the second protrusion and the third protrusion can all rotate from the rotation section to the friction section or rotate from the friction section to the rotation section.

[0015] Further, the vertical plate is provided with a driving wheel, a driving belt and two driven wheels; the driving wheel is arranged in the first direction and rotatably mounted on the vertical plate along its own axis, the two driven wheels are both arranged in the first direction on the vertical plate and sequentially arranged along the circumferential direction of the rotating ring, and the two driven wheels are both rotatably arranged along their own axes; the driving belt is sequentially wound around the driving wheel and the two driven wheels; and the driving belt is engaged with the rotating ring.

[0016] The longitudinal shear line automatic packaging machine has the advantages that the first supporting roller can improve the stability of the steel coil, inhibit the shaking of the steel coil caused by the eccentric tension of the packaging material during the packaging process, and flatten and compact the packaging material that has been wound on the steel coil by the revolution and rotation of the first supporting roller, so that the tightness of the steel coil winding is improved, and the packaging quality of the steel coil is improved. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 FIG. 1 is a schematic diagram of the overall structure of an embodiment of the longitudinal shear line automatic packaging machine of the present application;

[0019] Figure 2 FIG. 2 is a schematic diagram of the overall structure of an embodiment of the longitudinal shear line automatic packaging machine of the present application from another perspective;

[0020] Figure 3 FIG. 3 is a side view of the overall structure of an embodiment of the longitudinal shear line automatic packaging machine of the present application;

[0021] Figure 4 FIG. 4 is a front view of the overall structure of an embodiment of the longitudinal shear line automatic packaging machine of the present application;

[0022] Figure 5 FIG. 5 is a sectional view along A-A in FIG. 4; Figure 4

[0023] Figure 6 ​Schematic view of a support mechanism of an embodiment of an automatic packaging machine for a slitting line according to the invention;

[0024] Figure 7 Sectional view of a support mechanism of an embodiment of an automatic packaging machine for a slitting line according to the invention;

[0025] Figure 8 Schematic view of a first support roller of an embodiment of an automatic packaging machine for a slitting line according to the invention;

[0026] Figure 9 Sectional view of a first support roller of an embodiment of an automatic packaging machine for a slitting line according to the invention;

[0027] Figure 10 Schematic view of a first support roller of an embodiment of an automatic packaging machine for a slitting line according to the invention; Figure 9 Enlarged view of B in the middle;

[0028] Figure 11 Schematic view of a first support roller of an embodiment of an automatic packaging machine for a slitting line according to the invention;

[0029] Figure 12 Schematic view of a housing of an embodiment of an automatic packaging machine for a slitting line according to the invention.

[0030] In the figure: 100, steel coil; 200, base; 210, vertical plate; 211, drive wheel; 212, drive belt; 213, driven wheel; 214, auxiliary wheel; 220, first motor; 230, second motor; 240, driving wheel; 250, third motor; 260, clamping wheel; 300, rotating ring; 310, baling material; 400, support mechanism; 410, first support roller; 411, upper roller body; 412, middle roller body; 413, lower roller body; 414, first protrusion; 415, second protrusion; 416, third protrusion; 417, rotating section; 418, friction section; 419, rotating shaft; 420, toothed plate; 421, first bevel gear; 422, second bevel gear; 423, third bevel gear; 424, first counter shaft; 430, second transmission member; 440, second support roller; 450, drive chain; 451, housing; 452, rack chain; 453, sprocket; 454, support shaft; 455, first gear; 456, second gear; 460, connecting plate; 461, limiting rod; 470, screw; 471, handle. DETAILED DESCRIPTION

[0031] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0032] An embodiment of the automatic packaging machine of a slitting line is shown in Figures 1 to 12 the accompanying drawings.

[0033] An automatic packaging machine of a slitting line for packaging a steel coil 100, comprising a base 200, a rotating ring 300 and a supporting mechanism 400. The base 200 is fixedly provided with a vertical plate 210, which is arranged in the vertical direction. The rotating ring 300 is rotatably mounted on the vertical plate 210 about its own axis. The axis direction of the rotating ring 300 is referred to as the first direction, which is the horizontal direction. A winding shaft is rotatably arranged on the end face of the rotating ring 300, and the winding shaft is arranged in the first direction. A packaging material 310 is wound on the winding shaft. The winding shaft can rotate synchronously with the rotating ring 300 and can rotate about its own axis. The steel coil 100 is rotatably mounted on the base 200 about its own axis. The axis direction of the steel coil 100 is referred to as the second direction, which is the horizontal direction perpendicular to the first direction. The rotating ring 300 has an opening. The steel coil 100 passes through the opening in the vertical direction and extends into the rotating ring 300. The supporting mechanism 400 comprises two supporting members, which are respectively located on both sides of the steel coil 100 in the second direction. The supporting member comprises a first supporting roller 410, which is arranged on the base 200 in the radial direction of the steel coil 100 and can abut against the end face of the steel coil 100. The first supporting roller 410 can revolve around the rotation axis of the steel coil 100, and the direction of the revolution of the first supporting roller 410 around the rotation axis of the steel coil 100 is the same as the direction of the rotation of the steel coil 100. The speed of the revolution of the first supporting roller 410 around the rotation axis of the steel coil 100 is greater than the speed of the rotation of the steel coil 100. The rotation of the steel coil 100 about its own axis can drive the first supporting roller 410 to rotate about its own axis.

[0034] In this embodiment, the base 200, the rotating ring 300 and the supporting mechanism 400 cooperate to place the steel coil 100 on the base 200 during packaging of the steel coil 100, and then the first supporting roller 410 of each supporting member abuts against the two end faces of the steel coil 100 in the second direction. The clamping of the first supporting roller 410 can improve the stability of the steel coil 100 and inhibit the shaking of the steel coil 100 caused by the eccentric tension of the packaging material 310 during packaging. It should be particularly noted that the clamping force of the first supporting roller 410 should not be too large to avoid extruding the packaging material 310. The first supporting roller 410 should only abut against the steel coil 100 without limiting the rotation of the steel coil 100.

[0035] Then the packing material 310 is installed on the winding shaft, and the free end of the packing material 310 is pulled out to be wound on the steel coil 100, ensuring that the initial winding position is in close contact. Then the rotating ring 300 is driven to rotate, and the steel coil 100 is driven to rotate, so that the packing material 310 is wound on the steel coil 100 in a spiral manner. At the same time, the first supporting roller 410 is driven to revolve around the axis of the steel coil 100, and the revolving direction of the first supporting roller 410 is the same as the rotating direction of the steel coil 100, but the revolving speed of the first supporting roller 410 is greater than the rotating speed of the steel coil 100, and when the steel coil 100 rotates around its own axis, the first supporting roller 410 can also rotate around its own axis, and the first supporting roller 410 is used to cooperate with the revolution and rotation to flatten and compress the packing material 310 that has been wound on the steel coil 100, so as to improve the tightness of the winding of the steel coil 100, and further improve the packaging quality of the steel coil 100. After the outer periphery of the steel coil 100 is uniformly wound with enough layers of the packing material 310, the packing material 310 is cut off and the end is fixed, and the automatic packaging is completed.

[0036] In further embodiments, the first supporting roller 410 is a conical roller, and the small end of the first supporting roller 410 is located on the side close to the central axis of the steel coil 100 in the radial direction of the steel coil 100.

[0037] In this embodiment, the first supporting roller 410 is set as a conical roller to adapt to the change trend of the radius of the end surface of the steel coil 100, so that the linear speed of the first supporting roller 410 at the corresponding position of the end surface of the steel coil 100 is basically consistent, and the wear of the first supporting roller 410 and the end surface of the steel coil 100 due to relative movement is reduced.

[0038] In a further embodiment, the first support roller 410 includes an upper roller body 411, a middle roller body 412, and a lower roller body 413. The upper roller body 411, middle roller body 412, and lower roller body 413 are sequentially arranged and coaxially in the radial direction of the steel coil 100. The upper roller body 411 is located above the lower roller body 413, and is positioned on the side of the lower roller body 413 closest to the central axis of the steel coil 100 in the radial direction of the steel coil 100. The rotation direction of the upper roller body 411 is the same as that of the lower roller body 413, while the rotation direction of the middle roller body 412 is opposite to that of the upper roller body 411. A first protrusion 414 is coaxially and fixedly disposed on the upper roller body 411, a second protrusion 415 is coaxially and fixedly disposed on the middle roller body 412, and a third protrusion 416 is coaxially and fixedly disposed on the lower roller body 413. The first protrusion 414, the second protrusion 415, and the third protrusion 416 are all arc-shaped protrusions. The first protrusion 414, the second protrusion 415, and the third protrusion 416 each include a rotating section 417 and a friction section 418. The rotating section 417 and the friction section 418 are arranged sequentially and fixedly connected around the circumference of the upper roller body 411. The surface of the rotating section 417 is smooth, and the surface of the friction section 418 is rough. In the initial state, in the first support roller 410, the rotating section 417 of the upper roller body 411 and the rotating section 417 of the lower roller body 413 abut against the end face of the steel coil 100, and the friction section 418 of the middle roller body 412 abuts against the end face of the steel coil 100.

[0039] In the initial state, within the first roller 410, the rotating sections 417 of the upper roller 411 and the lower roller 413 abut against the end face of the steel coil 100, while the friction section 418 of the middle roller 412 abuts against the end face of the steel coil 100. Therefore, when the steel coil 100 rotates, the frictional force between the middle roller 412 and the steel coil 100 is greater than the frictional force between the upper roller 411 and the lower roller 413 and the steel coil 100. The steel coil 100 will drive the middle roller 412 to rotate through friction. Since the revolution speed of the first roller 410 is greater than the rotation speed of the steel coil 100, the frictional force between the middle roller 412 and the steel coil 100 is greater than the frictional force between the upper roller 411 and the lower roller 413 and the steel coil 100. Figure 6 For the two first rollers 410 located on both sides of the steel coil 100 in the second direction, when the steel coil 100 rotates clockwise, the middle roller body 412 (located on the outer side) of one of the first rollers 410 will... Figure 6 The top-down view shown rotates clockwise, and the rotation directions of the upper roller 411 and lower roller 413 are opposite to the rotation direction of the middle roller 412. During the rotation of the middle roller 412, the second protrusion 415 on the middle roller 412 will rotate to the side contacting the end face of the steel coil 100, while the first protrusion 414 on the upper roller 411 and the third protrusion 416 on the lower roller 413 will gradually disengage from the end face of the steel coil 100. The middle roller 412 (located on the inner side) of the other first support roller 410 will rotate... Figure 6The middle roller body 412 rotates counterclockwise from the top view, and the rotation directions of the upper roller body 411 and the lower roller body 413 are opposite to that of the middle roller body 412, and during the rotation of the middle roller body 412, the second protrusion 415 on the middle roller body 412 will rotate to the side in contact with the end face of the steel coil 100, while the first protrusion 414 on the upper roller body 411 and the third protrusion 416 on the lower roller body 413 will gradually be separated from the end face of the steel coil 100.

[0040] The first branch roller 410 further comprises a rotating shaft 419 mounted on the base 200, the rotating shaft 419 is coaxially arranged with the upper roller body 411 and rotationally connected with the upper roller body 411, a first transmission member is arranged between the upper roller body 411 and the middle roller body 412, the first transmission member can make the rotation direction of the middle roller body 412 opposite to that of the upper roller body 411, a second transmission member 430 is arranged between the middle roller body 412 and the lower roller body 413, the second transmission member 430 can make the rotation direction of the lower roller body 413 opposite to that of the middle roller body 412, so that the rotation directions of the upper roller body 411 and the lower roller body 413 are the same.

[0041] Specifically, the first transmission member comprises a first bevel gear 421, a second bevel gear 422, a third bevel gear 423 and a first auxiliary shaft 424. The first bevel gear 421 is coaxially arranged with the upper roller body 411 and fixedly connected with the upper roller body 411, the second bevel gear 422 is coaxially arranged with the middle roller body 412 and fixedly connected with the middle roller body 412, the first auxiliary shaft 424 is perpendicular to the rotating shaft 419 and rotationally connected with the rotating shaft 419, the third bevel gear 423 is coaxially arranged with the first auxiliary shaft 424 and fixedly connected with the first auxiliary shaft 424, and the third bevel gear 423 is simultaneously meshed with the first bevel gear 421 and the second bevel gear 422.

[0042] The structure of the second transmission member 430 is the same as that of the first transmission member. Specifically, the second transmission member 430 comprises a fourth bevel gear, a fifth bevel gear, a sixth bevel gear and a second auxiliary shaft. The fourth bevel gear is coaxially arranged with the lower roller body 413 and fixedly connected with the lower roller body 413, the fifth bevel gear is coaxially arranged with the middle roller body 412 and fixedly connected with the middle roller body 412, the second auxiliary shaft is perpendicular to the rotating shaft 419 and rotationally connected with the rotating shaft 419, the sixth bevel gear is coaxially arranged with the second auxiliary shaft and fixedly connected with the second auxiliary shaft, and the sixth bevel gear is simultaneously meshed with the fourth bevel gear and the fifth bevel gear.

[0043] Taking the first transmission member as an example, when the middle roller body 412 rotates, the middle roller body 412 will drive the second bevel gear 422 on it to rotate synchronously, at this time the second bevel gear 422 is meshed with the third bevel gear 423, the third bevel gear 423 is meshed with the first bevel gear 421, so the second bevel gear 422 will drive the first bevel gear 421 to rotate through the third bevel gear 423, so that the upper roller body 411 rotates, and the rotation direction of the upper roller body 411 is opposite to that of the middle roller body 412.

[0044] In a further embodiment, the support further comprises a second supporting roller 440 arranged along the radial direction of the steel coil 100 and capable of abutting against the end surface of the steel coil 100. The second supporting roller 440 has the same structure as the first supporting roller 410. In the initial state, the friction segments 418 of the upper roller body 411 and the lower roller body 413 of the second supporting roller 440 both abut against the end surface of the steel coil 100, and the rotation segment 417 of the roller body 412 abuts against the end surface of the steel coil 100. The first supporting roller 410 and the second supporting roller 440 located on the same side of the steel coil 100 in the second direction are referred to as a supporting group, and in the initial state, the first supporting roller 410 and the second supporting roller 440 in one of the supporting groups are away from each other along the direction of the rotation axis of the steel coil 100, and the first supporting roller 410 and the second supporting roller 440 in the other supporting group are close to each other along the direction of the rotation axis of the steel coil 100.

[0045] The base 200 is provided with two driving groups, and the two driving groups are located on both sides of the steel coil 100 in the second direction. The driving groups and the supporting groups are arranged one by one. The driving groups are used to drive the first supporting roller 410 and the second supporting roller 440 in the corresponding supporting group to be away from or close to each other along the direction of the rotation axis of the steel coil 100, and when the first supporting roller 410 and the second supporting roller 440 in one of the supporting groups are close to each other along the direction of the rotation axis of the steel coil 100, the first supporting roller 410 and the second supporting roller 440 in the other supporting group can be away from each other along the direction of the rotation axis of the steel coil 100.

[0046] The driving groups comprise two driving chains 450. The two driving chains 450 are arranged in sequence along the direction of the rotation axis of the steel coil 100, and the rotation axes of the two driving chains 450 are arranged along the second direction. The rotation directions of the two driving chains 450 in the same driving group are opposite. The rotation axes 419 of the first supporting roller 410 and the second supporting roller 440 are both provided with tooth plates 420, and the tooth plates 420 are arranged one by one with the driving chains 450. The tooth plates 420 are clamped with the corresponding driving chains 450.

[0047] Specifically, the drive chain 450 comprises a housing 451, a rack chain 452 and two sprockets 453, the housing 451 is mounted on the base 200 through a support shaft 454, the housing 451 is arc-shaped and coaxially arranged with the steel coil 100. The two sprockets 453 are respectively rotationally connected with the two ends of the housing 451 in the direction of the rotation axis of the steel coil 100, and the rack chain 452 is sequentially arranged around the housing 451 and the two sprockets 453. Among the two drive chains 450 in the same drive group, the two sprockets 453 arranged adjacent to each other in the direction of the rotation axis of the steel coil 100 are respectively referred to as a first wheel and a second wheel, a first gear 455 is coaxially and fixedly arranged on the first wheel, a second gear 456 is coaxially and fixedly arranged on the second wheel, the first gear 455 is engaged with the second gear 456, and two first motors 220 are arranged on the base 200, the first wheel and the first motor 220 corresponding to each other are arranged, and the first wheel is fixedly mounted on the output end of the first motor 220 corresponding thereto.

[0048] In use, the drive group can be used to cause the first supporting roller 410 and the second supporting roller 440 in the same supporting group to revolve around the rotation axis of the steel coil 100. Referring to Figure 6 The first supporting roller 410 and the second supporting roller 440 are shown in the figure, which are examples (outer side) of the first supporting roller 410 and the second supporting roller 440 moving away from each other in the direction of the rotation axis of the steel coil 100. In use, the first motor 220 is started, the first motor 220 is started to drive the first wheel on it to rotate, and the first wheel drives the rack chain 452 on which the first wheel is arranged to rotate, and then drives the first supporting roller 410 to revolve around the rotation axis of the steel coil 100 through the engagement of the rack chain 452 and the toothed plate 420. And the rotation of the first wheel will drive the first gear 455 arranged coaxially and fixedly connected with the first wheel to rotate, and through the engagement of the first gear 455 and the second gear 456, the second wheel on the other drive chain 450 is driven to rotate, and the rotation direction of the first wheel is opposite to that of the second wheel. The rotation of the second wheel will drive the rack chain 452 on which the second wheel is arranged to rotate, and then drive the second supporting roller 440 to revolve around the rotation axis of the steel coil 100 through the engagement of the rack chain 452 and the toothed plate 420. That is, the first supporting roller 410 and the second supporting roller 440 in the same supporting group rotate in opposite directions around the rotation axis of the steel coil 100, and by adjusting the rotation direction of the first motor 220 in the two drive groups, the first supporting roller 410 and the second supporting roller 440 in one supporting group can revolve around the rotation axis of the steel coil 100, and the first supporting roller 410 and the second supporting roller 440 in the other supporting group can revolve around the rotation axis of the steel coil 100.

[0049] Furthermore, in the initial state, in the second support roller 440, the friction sections 418 of the upper roller body 411 and the lower roller body 413 abut against the end face of the steel coil 100, and the rotating section 417 of the middle roller body 412 abuts against the end face of the steel coil 100. Therefore, when the steel coil 100 rotates, the frictional force between the middle roller body 412 and the steel coil 100 is less than the frictional force between the upper roller body 411 and the lower roller body 413 and the steel coil 100. The steel coil 100 will drive the upper roller body 411 and the lower roller body 413 to rotate through friction. Since the revolution speed of the second support roller 440 is greater than the rotation speed of the steel coil 100, the frictional force between the upper roller body 411 and the lower roller body 413 and the steel coil 100 is less. Figure 6 For the two second rolls 440 located on both sides of the steel coil 100 in the second direction, the upper roll body 411 and the lower roll body 413 (located on the outer side) of one of the second rolls 440 will be... Figure 6 The top-down view shown rotates counterclockwise, and the rotation directions of the upper roller 411 and lower roller 413 are opposite to the rotation direction of the middle roller 412. During the rotation of the upper roller 411 and lower roller 413, the first protrusion 414 on the upper roller 411 and the third protrusion 416 on the lower roller 413 will rotate to the side that contacts the end face of the steel coil 100, while the second protrusion 415 on the middle roller 412 will rotate to disengage from the end face of the steel coil 100. Furthermore, when the packaged coil 310 is wound around the steel coil 100, the tension is greater on the inner and outer sides of the steel coil 100. Therefore, although the direction of the revolution of the upper roller 411 and lower roller 413 around the axis of the steel coil 100 is opposite to the direction of rotation of the steel coil 100, it is not easy for wrinkles to form on the portion of the steel coil 100 that has already been wound with the packaged coil 310.

[0050] Similarly, the upper roller body 411 and lower roller body 413 (located on the inner side) of the other second roller 440 will be... Figure 6 The top-down view shown rotates clockwise, and the rotation directions of the upper roller 411 and lower roller 413 are opposite to the rotation direction of the middle roller 412. During the rotation of the upper roller 411 and lower roller 413, the first protrusion 414 on the upper roller 411 and the third protrusion 416 on the lower roller 413 will rotate to the side that contacts the end face of the steel coil 100, while the second protrusion 415 on the middle roller 412 will rotate to disengage from the end face of the steel coil 100. Similarly, although the direction of the revolution of the upper roller 411 and lower roller 413 around the axis of the steel coil 100 is opposite to the direction of rotation of the steel coil 100, it is not easy to cause wrinkles in the portion of the steel coil 100 that has been wound and packaged as coil material 310.

[0051] After the friction section 418 of the upper roller body 411 and the friction section 418 of the lower roller body 413 of the first supporting roller 410 and the end surface of the steel coil 100 abut, the rotating section 417 of the middle roller body 412 abuts the end surface of the steel coil 100, the rotating section 417 of the upper roller body 411 and the rotating section 417 of the lower roller body 413 of the second supporting roller 440 abut the end surface of the steel coil 100, and the friction section 418 of the middle roller body 412 abuts the end surface of the steel coil 100, the two first motors 220 are driven to move reversely, and the circulation is performed, so that the reciprocating motion of the first supporting roller 410 and the second supporting roller 440 in the two supporting groups is realized, and then the first supporting roller 410 and the second supporting roller 440 in the same supporting group can alternately and uninterruptedly flatten and compress the packaged coil material 310 that has been wound on the steel coil 100, so as to improve the packaging quality of the steel coil 100; and in the process that the first supporting roller 410 and the second supporting roller 440 in the two supporting groups move away from or close to each other around the rotation axis direction of the steel coil 100, four supporting points are equivalent to supporting the steel coil 100 at different positions of the steel coil 100, and the stability of the steel coil 100 is further improved.

[0052] In a further embodiment, the first supporting roller 410 and the second supporting roller 440 in the same supporting group are connected through the connecting plate 460, the connecting plate 460 is installed on the base 200 through the limiting rod 461, and the connecting plate 460 is movably arranged in the second direction. Two arc grooves are formed in the connecting plate 460, and the two arc grooves are coaxially arranged with the steel coil 100. The rotating shaft 419 of the first supporting roller 410 is slidably connected with one of the arc grooves, and the rotating shaft 419 of the second supporting roller 440 is slidably connected with the other arc groove.

[0053] The two connecting plates 460 are connected through the screw rod 470, the screw rod 470 is arranged in the second direction and is screwed with the two connecting plates 460, and the rotation of the screw rod 470 can make the two connecting plates 460 close to or away from each other in the second direction. One end of the screw rod 470 is provided with a handle 471.

[0054] Specifically, the two connecting plates 460 are provided with threaded holes, and the rotation directions of the threads arranged in the two threaded holes are opposite.

[0055] In use, the screw rod 470 can be rotated, and the rotation of the screw rod 470 causes the screw transmission with the connecting plate 460 to take effect, so that the two connecting plates 460 can move closer to or farther away from each other in the second direction. The movement of the connecting plate 460 drives the synchronous movement of the first supporting roller 410 and the second supporting roller 440 on the connecting plate 460, and causes the toothed plate 420 to slide along the rack chain 452 arranged correspondingly to the toothed plate 420 in the second direction, so that the first supporting roller 410 and the second supporting roller 440 can contact the end surface of the steel coil 100. The two connecting plates 460 moving closer to or farther away from each other in the second direction can adapt to steel coils 100 of different sizes, thereby improving the use range of the supporting mechanism 400.

[0056] In a further embodiment, the two ends of the arc groove in the direction of the rotation axis of the steel coil 100 are referred to as the head end and the tail end, respectively. The arcs in which the first protrusion 414, the second protrusion 415, and the third protrusion 416 are located are all optimal arcs. When the rotation axis 419 slides from the head end to the tail end of the arc groove, the first protrusion 414, the second protrusion 415, and the third protrusion 416 can all rotate from the rotation section 417 to the friction section 418, or from the friction section 418 to the rotation section 417.

[0057] In this embodiment, the cooperation between the arc groove and the rotation section 417 and the friction section 418 of the first protrusion 414, the second protrusion 415, and the third protrusion 416 is limited. Taking the first supporting roller 410 as an example, in the initial state, the rotation section 417 of the upper roller body 411 and the rotation section 417 of the lower roller body 413 of the first supporting roller 410 abut against the end surface of the steel coil 100, and the friction section 418 of the roller body 412 abuts against the end surface of the steel coil 100. When the first supporting roller 410 is moved from the head end to the tail end of the arc groove on the connecting plate 460 by the rack chain 452 arranged correspondingly to the first supporting roller 410, the friction section 418 of the upper roller body 411 and the friction section 418 of the lower roller body 413 of the first supporting roller 410 abut against the end surface of the steel coil 100, and the rotation section 417 of the middle roller body 412 abuts against the end surface of the steel coil 100. The cooperation between the friction section 418 and the rotation section 417 ensures that the first supporting roller 410 can automatically switch the contact surface with the steel coil 100 during the rotation process.

[0058] In a further embodiment, the vertical plate 210 is provided with a driving wheel 211, a driving belt 212, and two driven wheels 213. The driving wheel 211 is arranged in the first direction and can be rotatably mounted on the vertical plate 210 about its own axis. The two driven wheels 213 are both arranged in the first direction on the vertical plate 210 and are sequentially arranged in the circumferential direction of the rotating ring 300. The two driven wheels 213 are both rotatably arranged about their own axes. The driving belt 212 is sequentially wound around the driving wheel 211 and the two driven wheels 213. The driving belt 212 is engaged with the rotating ring 300.

[0059] The second motor 230 is arranged on the vertical plate 210, and the driving wheel 211 is fixedly installed on the output shaft of the second motor 230.

[0060] Further, a plurality of auxiliary wheels 214 are rotatably arranged on the vertical plate 210, the plurality of auxiliary wheels 214 are arranged along the first direction, and the plurality of auxiliary wheels 214 are uniformly distributed around the circumferential direction of the rotating ring 300.

[0061] By engaging the driving belt 212 with the rotating ring 300, in use, the second motor 230 is started, the second motor 230 is started to drive the driving wheel 211 to rotate, and then drive the driving belt 212 to rotate, and the friction transmission between the driving belt 212 and the rotating ring 300 enables the rotating ring 300 to rotate.

[0062] In a further embodiment, two driving wheels 240 are rotatably arranged on the base 200, the two driving wheels 240 are arranged along the second direction, and the two driving wheels 240 are located below the steel coil 100 and in contact with the steel coil 100.

[0063] The third motor 250 is arranged on the base 200, one of the driving wheels 240 is fixedly installed on the output end of the third motor 250, and the rotating speed of the first motor 220 is greater than the rotating speed of the third motor 250.

[0064] By arranging two driving wheels 240, in use, the third motor 250 is started to drive the driving wheel 240 connected thereto to rotate, and the driving wheel 240 rotates to drive the steel coil 100 to rotate around its own axis by friction transmission. And by setting the rotating speed of the first motor 220, the speed of the first supporting roller 410 revolving around the rotating axis of the steel coil 100 is greater than the speed of the steel coil 100 rotating.

[0065] In a further embodiment, two clamping wheels 260 are arranged on the vertical plate 210, the two clamping wheels 260 are respectively located on both sides of the steel coil 100 in the second direction, and the two clamping wheels 260 are movably arranged in the second direction.

[0066] The two clamping wheels 260 are installed on the vertical plate 210 by hydraulic telescopic cylinders.

[0067] In this embodiment, two clamping wheels 260 are arranged, in use, the two clamping wheels 260 are driven by the hydraulic telescopic cylinders to move towards each other in the second direction, so that the two clamping wheels 260 respectively abut against the two end faces of the steel coil 100 in the second direction. It should be particularly noted that, in order to avoid the situation that the clamping force of the clamping wheel 260 is too large and the packing material 310 is squeezed, the clamping wheel 260 only needs to be in abutment with the steel coil 100, but does not limit the position of the steel coil 100 rotating.

[0068] In combination with the above embodiments, the specific working process is as follows:

[0069] When the steel coil 100 is packed, the steel coil 100 is placed on the base 200. The screw rod 470 is rotated, the rotation of the screw rod 470 causes the screw transmission with the connecting plate 460 to take effect, thereby enabling the two connecting plates 460 to move close to or away from each other in the second direction, the movement of the connecting plate 460 will drive the synchronous movement of the first supporting roller 410 and the second supporting roller 440 on it, and make the tooth plate 420 slide along the rack chain 452 corresponding to it in the second direction, so that the first supporting roller 410 of the two supporting members respectively abuts against the two end faces of the steel coil 100 in the second direction. Through the clamping of the first supporting roller 410, the stability of the steel coil 100 can be improved, and the shaking of the steel coil 100 caused by the eccentric tension of the packing coil material 310 during the packing process can be inhibited.

[0070] Then the packing coil material 310 is installed on the winding shaft, and the free end of the packing coil material 310 is pulled out and wound on the steel coil 100 to ensure that the initial winding position is in close contact. And use the hydraulic telescopic cylinder to drive the two clamping wheels 260 to move close to each other in the second direction, so that the two clamping wheels 260 respectively abut against the two end faces of the steel coil 100 in the second direction. Then start the second motor 230, the start of the second motor 230 will drive the driving wheel 211 to rotate, thereby driving the driving belt 212 to rotate, and using the friction transmission between the driving belt 212 and the rotating ring 300, the rotating ring 300 can rotate. And synchronously start the third motor 250 to drive the driving wheel 240 connected thereto to rotate, the rotation of the driving wheel 240 will drive the steel coil 100 to rotate around its own axis through friction transmission. The packing coil material 310 is wound on the steel coil 100 in a spiral winding manner.

[0071] Subsequently, the first motor 220 is started, referring to Figure 6As shown, taking the first supporting roller 410 and the second supporting roller 440 (the outer side) which are away from each other around the rotation axis of the steel coil 100 as an example, the first motor 220 is started to drive the first wheel to rotate, and the first wheel drives the rack chain 452 on which the first wheel is located to rotate, and then the rack chain 452 and the toothed plate 420 are engaged to drive the first supporting roller 410 to revolve around the rotation axis of the steel coil 100. And the rotation of the first wheel drives the first gear 455 coaxially arranged and fixedly connected with the first wheel to rotate, and the first gear 455 and the second gear 456 are engaged to drive the second wheel on the other driving chain 450 to rotate, and the rotation direction of the first wheel is opposite to that of the second wheel, and the rotation of the second wheel drives the rack chain 452 on which the second wheel is located to rotate, and then the rack chain 452 and the toothed plate 420 are engaged to drive the second supporting roller 440 to revolve around the rotation axis of the steel coil 100. That is, the rotation direction of the first supporting roller 410 and the second supporting roller 440 in the same supporting group around the rotation axis of the steel coil 100 is opposite, and the rotation direction of the first motor 220 is set to make the first supporting roller 410 and the second supporting roller 440 approach each other around the rotation axis of the steel coil 100 at this time. And by adjusting the rotation direction of the first motor 220 in the two driving groups, the first supporting roller 410 and the second supporting roller 440 in the other supporting group can revolve away from each other around the rotation axis of the steel coil 100 when the first supporting roller 410 and the second supporting roller 440 in one supporting group revolve towards each other around the rotation axis of the steel coil 100.

[0072] And because in the initial state, the friction sections 418 of the upper roller body 411 and the lower roller body 413 and the friction section 418 of the middle roller body 412 are in abutment with the end face of the steel coil 100 in the second supporting roller 440. Therefore, when the steel coil 100 rotates, the friction between the middle roller body 412 and the steel coil 100 is smaller than that between the upper roller body 411 and the lower roller body 413 and the steel coil 100. The steel coil 100 will drive the upper roller body 411 and the lower roller body 413 to rotate, and because the revolution speed of the second supporting roller 440 is greater than the rotation speed of the steel coil 100, the upper roller body 411 and the lower roller body 413 of the second supporting roller 440 will revolve around the rotation axis of the steel coil 100 at a speed greater than the rotation speed of the steel coil 100. Figure 6 The upper roller body 411 and the lower roller body 413 (located on the outer side) of one of the two second supporting rollers 440 located on both sides of the steel coil 100 in the second direction will revolve around the rotation axis of the steel coil 100 at a speed greater than the rotation speed of the steel coil 100, and the upper roller body 411 and the lower roller body 413 (located on the outer side) of the other second supporting roller 440 will revolve around the rotation axis of the steel coil 100 at a speed less than the rotation speed of the steel coil 100. Figure 6The first protrusion 414 on the upper roller body 411 and the third protrusion 416 on the lower roller body 413 are rotated to the side in contact with the end face of the steel coil 100, and the second protrusion 415 on the middle roller body 412 is rotated to the side away from the end face of the steel coil 100 in the rotation process of the upper roller body 411 and the lower roller body 413. When the packing coil 310 is wound on the steel coil 100, the tension near the inner coil side and the outer coil side of the steel coil 100 is larger, so although the direction of revolution of the upper roller body 411 and the lower roller body 413 around the axis of the steel coil 100 is opposite to the direction of rotation of the steel coil 100, the part of the steel coil 100 that has been wound with the packing coil 310 is not easy to wrinkle.

[0073] When the first supporting roller 410 is driven by the rack chain 452 to move from the first end of the arc slot of the connecting plate 460 to the second end, the friction sections 418 of the upper roller body 411 and the lower roller body 413 of the first supporting roller 410 are in abutment with the end face of the steel coil 100, and the rotation section 417 of the middle roller body 412 is in abutment with the end face of the steel coil 100. The friction sections 418 and the rotation section 417 are matched to ensure that the first supporting roller 410 can automatically switch the contact surface with the steel coil 100 during rotation. That is, after the friction sections 418 of the upper roller body 411 and the lower roller body 413 of the first supporting roller 410 are in abutment with the end face of the steel coil 100, and the rotation section 417 of the middle roller body 412 is in abutment with the end face of the steel coil 100, and the rotation section 417 of the upper roller body 411 and the lower roller body 413 of the second supporting roller 440 are in abutment with the end face of the steel coil 100, and the friction section 418 of the middle roller body 412 is in abutment with the end face of the steel coil 100. The two first motors 220 are driven to move in opposite directions, and the cycle is repeated, so that the reciprocating motion of the first supporting roller 410 and the second supporting roller 440 in the two supporting groups is realized, and the first supporting roller 410 and the second supporting roller 440 in the same supporting group can alternately and uninterruptedly flatten and compress the packing coil 310 that has been wound on the steel coil 100, so as to improve the packaging quality of the steel coil 100; and during the process that the first supporting roller 410 and the second supporting roller 440 in the two supporting groups move away from or close to each other around the rotation axis of the steel coil 100, four supporting points are equivalent to supporting the steel coil 100 at different positions of the steel coil 100, further improving the stability of the steel coil 100.

[0074] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An automatic packing machine for a slitting line for packing coils of steel, characterized in that: The application relates to a steel coil supporting device, which comprises a base, a rotating ring and a supporting mechanism; a vertical plate is arranged on the base and arranged in a vertical direction; the rotating ring is rotatably arranged on the vertical plate along the axis of the rotating ring; the axis direction of the rotating ring is called the first direction, and the first direction is a horizontal direction; a winding shaft is rotatably arranged on the end surface of the rotating ring and arranged in the first direction; a packing coil is arranged on the winding shaft; the winding shaft can rotate synchronously with the rotating ring and can rotate along the axis of the winding shaft; a steel coil is rotatably arranged on the base along the axis of the steel coil; the axis direction of the steel coil is called the second direction, and the second direction is a horizontal direction perpendicular to the first direction; the rotating ring is provided with an opening; the steel coil passes through the opening in the vertical direction and extends into the rotating ring; the supporting mechanism comprises two supporting pieces; the two supporting pieces are arranged on the two sides of the steel coil in the second direction; the supporting piece comprises a first supporting roller; the first supporting roller is arranged on the base along the radial direction of the steel coil and can abut against the end surface of the steel coil; the first supporting roller can revolve around the rotation axis of the steel coil; the revolving direction of the first supporting roller around the rotation axis of the steel coil is the same as the revolving direction of the steel coil; the revolving speed of the first supporting roller around the rotation axis of the steel coil is greater than the revolving speed of the steel coil; and the self-rotation of the steel coil around the axis of the steel coil can drive the first supporting roller to rotate around the axis of the first supporting roller.

2. An automatic packing machine for a slitting line as claimed in claim 1, characterized in that: The first supporting roller is a conical roller; and the small end of the first supporting roller is arranged on the side of the large end of the first supporting roller close to the central axis of the steel coil in the radial direction of the steel coil.

3. An automatic packing machine for a slitting line as claimed in claim 2, characterized in that: The first supporting roller comprises an upper roller body, a middle roller body and a lower roller body; the upper roller body, the middle roller body and the lower roller body are coaxially arranged in sequence in the radial direction of the steel coil; the upper roller body is arranged on the side of the lower roller body close to the central axis of the steel coil in the radial direction of the steel coil; the self-rotation direction of the upper roller body is the same as the self-rotation direction of the lower roller body; and the self-rotation direction of the middle roller body is opposite to the self-rotation direction of the upper roller body; a first protrusion is coaxially and fixedly arranged on the upper roller body; a second protrusion is coaxially and fixedly arranged on the middle roller body; a third protrusion is coaxially and fixedly arranged on the lower roller body; the first protrusion, the second protrusion and the third protrusion are arc-shaped protrusions; the first protrusion, the second protrusion and the third protrusion each comprise a rotating section and a friction section; the rotating section and the friction section are sequentially arranged and fixedly connected along the circumferential direction of the upper roller body; the surface of the rotating section is smooth; and the surface of the friction section is rough; in the initial state of the first supporting roller, the rotating section of the upper roller body and the rotating section of the lower roller body abut against the end surface of the steel coil; and the friction section of the middle roller body abuts against the end surface of the steel coil.

4. An automatic packing machine for a slitting line as claimed in claim 3, characterized in that: The first supporting roller further comprises a rotating shaft; the rotating shaft is arranged on the base and coaxially arranged with the upper roller body and rotatably connected with the upper roller body; a first transmission member is arranged between the upper roller body and the middle roller body; the first transmission member can make the self-rotation direction of the middle roller body opposite to the self-rotation direction of the upper roller body; a second transmission member is arranged between the middle roller body and the lower roller body; and the second transmission member can make the self-rotation direction of the lower roller body opposite to the self-rotation direction of the middle roller body.

5. An automatic packing machine for a slitting line as claimed in claim 4, characterized in that: The support further comprises a second supporting roller arranged along the radial direction of the steel coil and capable of abutting against the end face of the steel coil; the structure of the second supporting roller is the same as that of the first supporting roller; in the initial state, the friction section of the upper roller body and the friction section of the lower roller body in the second supporting roller are both in abutment with the end face of the steel coil, wherein the rotation section of the roller body is in abutment with the end face of the steel coil; the first supporting roller and the second supporting roller on the same side of the steel coil in the second direction are referred to as a supporting group; in the initial state, the first supporting roller and the second supporting roller in one of the supporting groups are away from each other along the direction of the rotation axis of the steel coil, and the first supporting roller and the second supporting roller in the other supporting group are close to each other along the direction of the rotation axis of the steel coil; two driving groups are arranged on the base, and the two driving groups are respectively located on the two sides of the steel coil in the second direction; the driving groups and the supporting groups are arranged one by one; the driving groups are used to drive the first supporting roller and the second supporting roller in the corresponding supporting group to be away from or close to each other along the direction of the rotation axis of the steel coil, and when the first supporting roller and the second supporting roller in one of the supporting groups are close to each other along the rotation axis of the steel coil, the first supporting roller and the second supporting roller in the other supporting group can be away from each other along the rotation axis of the steel coil.

6. An automatic packing machine for a slitting line as claimed in claim 5, characterized in that: The driving group comprises two driving chains; the two driving chains are sequentially arranged along the direction of the rotation axis of the steel coil, the rotation axes of the two driving chains are both arranged along the second direction, and the self-rotation directions of the two driving chains in the same driving group are opposite; the rotation axis of the first supporting roller and the rotation axis of the second supporting roller are both provided with a tooth plate, the tooth plates are arranged one by one with the driving chains, and the tooth plates are clamped with the corresponding driving chains.

7. An automatic packing machine for a slitting line as claimed in claim 5, characterized in that: The first supporting roller and the second supporting roller in the same supporting group are connected through a connecting plate, the connecting plate is mounted on the base, and the connecting plate is movably arranged along the second direction; two arc grooves are formed in the connecting plate, the two arc grooves are coaxially arranged with the steel coil, the rotation axis of the first supporting roller is slidably matched with one of the arc grooves, and the rotation axis of the second supporting roller is slidably matched with the other arc groove.

8. An automatic packing machine for a slitting line as claimed in claim 7, characterized in that: The two connecting plates are connected through a screw rod, the screw rod is arranged along the second direction and is screwed with the two connecting plates, and rotation of the screw rod can make the two connecting plates close to or away from each other along the second direction.

9. An automatic packing machine for a slitting line as claimed in claim 7, characterized in that: The two ends of the arc groove along the direction of the rotation axis of the steel coil are respectively referred to as a head end and a tail end, the arcs where the first protrusion, the second protrusion and the third protrusion are located are all optimal arcs, and when the rotation axis slides from the head end to the tail end of the arc groove, the first protrusion, the second protrusion and the third protrusion can all rotate from the rotation section to the friction section or from the friction section to the rotation section.

10. An automatic packing machine for slitting lines according to claim 1, characterized in that: The vertical plate is provided with a driving wheel, a driving belt and two driven wheels; the driving wheel is arranged along the first direction and is rotatably mounted on the vertical plate along its own axis, the two driven wheels are both arranged along the first direction of the vertical plate and sequentially arranged along the circumferential direction of the rotating ring, the two driven wheels are both rotatably arranged along their own axes, and the driving belt is sequentially arranged on the driving wheel and the two driven wheels; the driving belt is engaged with the rotating ring.

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