Double-machine-head steel coil core penetrating packaging machine and packaging method

Abstract

The invention discloses a double-machine-head steel coil core penetrating and packing machine which comprises a base assembly and a transverse moving cart assembly and further comprises a rotating frame assembly, a center frame assembly, two belt track mechanisms and two packing head assemblies, and the two belt track mechanisms and the two packing head assemblies are in bilateral symmetry relative to the center frame assembly. The belt track mechanism and the packing head assembly on the same side and the center frame assembly form a packing subsystem; each belt track mechanism comprises a large arm assembly, a swing arm air cylinder assembly and a swing belt track assembly, the large arm assemblies, the swing arm air cylinder assemblies and the packing head assembly are all connected with the rotating frame assembly, the front end and the rear end of each large arm assembly are connected with the corresponding swing belt track assembly and the corresponding swing arm air cylinder assembly respectively, and the swing belt track assemblies have the lap joint state and the separation state relative to the center frame assembly. According to the steel coil packing machine, two binding belts can be packed on a steel coil at a time, the surface of the steel coil is protected, and the packing efficiency and the packing quality are greatly improved.

Description

Technical Field

[0001] The present invention relates to the field of balers, and particularly to a double-head steel coil through-core baling machine and a baling method. Background Art

[0002] A steel coil generally refers to a strip-shaped material with a circular cross-sectional shape, rolled by a continuous rolling mill or a reversible rolling mill, and coiled into a coil shape by a coiler. There are many materials that can be made into coil materials, such as galvanized sheets, cold-rolled sheets, color-coated sheets, aluminum sheets, copper sheets, etc. The coil can generally be further machined. It can be cut into various shaped materials as needed to meet the needs of industrial production.

[0003] At present, both at home and abroad, manual through-core baling or single-head through-core baling machines are used. Manual baling has a large workload, requires multiple teams for production, has low work efficiency, and high production costs. In addition, manual through-core baling cannot guarantee stable work quality, has a poor working environment, and is prone to safety accidents; therefore, the single-head through-core baling machine has become the first choice. The disadvantages of the single-head baling machine are: First, only one steel strip can be tied each time, and the rhythm is slow, unable to meet the fast-paced production requirements; Second, if multiple steel strips need to be tied, the steel coil is rotated by a ground roller, which will damage the surface of the steel coil; Third, when baling, except for the steel strip at the baling head that will contact one surface of the steel coil, there are gaps between the other three surfaces of the steel coil and the packing belt. Therefore, after the packing line is completed, the packing belt will swing based on the side of the baling head, which not only affects the appearance but may also affect the uniformity between adjacent packing belts, thus affecting the final baling quality. Summary of the Invention

[0004] The problem to be solved by the present invention is to provide a double-head steel coil through-core baling machine, which can tie two packing belts for the steel coil at one time, protect the surface of the steel coil, greatly improve the baling efficiency and baling quality. At the same time, it can ensure the symmetry of the two packing belts, and ensure the uniformity and overall beauty of multiple packing belts, and expand the working range of the baling machine.

[0005] A double-head steel coil through-core baling machine of the present invention includes a base assembly and a transverse trolley assembly. It also includes a rotating frame assembly, a central frame assembly, two belt path mechanisms, and two baling head assemblies. The two belt path mechanisms and the two baling head assemblies are symmetric about the central frame assembly left and right. The belt path mechanism and the baling head assembly on the same side form a baling subsystem with the central frame assembly; each belt path mechanism includes a large arm assembly, a swing arm cylinder assembly, and a swinging belt path assembly. The large arm assembly, the swing arm cylinder assembly, and the baling head assembly are all connected to the rotating frame assembly. The front and rear ends of the large arm assembly are respectively connected to the swinging belt path assembly and the swing arm cylinder assembly. The swinging belt path assembly has two states of overlapping and separating relative to the central frame assembly.

[0006] Further, the base assembly includes a base, a guide rail assembly, a rack, and a limit block; the rack is fixed in the middle of the base, and two guide rail assemblies are respectively fixed at both ends of the base and are symmetric about the rack left and right. A limit block is provided in front of and behind each guide rail assembly.

[0007] Further, the transverse trolley assembly includes a frame, wheels, a transverse movement motor, a transverse movement gear, a rotation motor, a coupling, a connecting shaft, and a rotation gear; four wheels are arranged in front of and behind the left and right ends at the bottom of the frame. The transverse movement motor is fixed at the lower part of the frame. The transverse movement gear is sleeved on the motor shaft of the transverse movement motor and meshes with the rack; the rotation motor is fixed in the middle of the frame, the motor shaft is connected to the rear end of the connecting shaft through a coupling, and the rotation gear is sleeved on the front end of the connecting shaft and is connected to the rotary frame assembly.

[0008] Further, the rotary frame assembly includes a rotary frame, a slewing bearing, two propulsion cylinders, and two connecting seats; the slewing bearing is arranged in the middle behind the rotary frame, its outer ring is fixedly connected to the rotary frame, and its inner ring is fixedly connected to the mounting plate at the front of the frame. The outer ring of the slewing bearing meshes with the rotation gear; the two propulsion cylinders are symmetrically arranged about the slewing bearing left and right. Their cylinder parts are fixedly connected to the left and right ends in front of the rotary frame, and the rod parts are connected to the connecting seats. The connecting seats are connected to the packing head assembly.

[0009] Further, the center frame assembly includes a center frame and two left and right guide groove units. Each guide groove unit includes a linear guide groove and an outlet guide groove; the rear end of the center frame is fixedly connected to the middle in front of the rotary frame. Linear guide grooves and outlet guide grooves are symmetrically arranged on the left and right sides of the center frame, and the linear guide grooves and the outlet guide grooves are arranged front and rear.

[0010] Further, the packing head group includes a packing head bracket, a packing head, a guide groove, and an inlet guide groove; the packing head bracket is in the shape of "├". The rear of its horizontal plate is connected to the connecting seat, and the front of the horizontal plate is connected to the packing head. The inlet guide groove and the guide groove are respectively located in front of and behind the packing head.

[0011] Further, the packing head assembly further includes two front and rear movement guiding units, each of which includes a linear guide rail and a front and rear slider; the linear guide rail is fixed on the inner side of the boom assembly, and the front and rear sliders are fixed on the outer side of the vertical plate of the packing head bracket. The slider is slidably connected to the linear guide rail.

[0012] Further, the packing head assembly further includes a left and right movement unit, which includes a bottom plate, two upper and lower transverse cylinders, a linear guide rail, and a slider; the bottom plate is in the shape of "T". The transverse cylinders are located in front of the horizontal plate of the packing head bracket. Their cylinder parts are connected to the inner side of the vertical plate of the packing head bracket, and their rod ends are connected to the left end of the vertical plate of the bottom plate. The packing head is fixedly connected to the horizontal plate of the bottom plate; a linear guide rail is provided in front of the horizontal plate of the packing head bracket, and a slider is provided on the rear of the horizontal plate of the bottom plate. The slider is slidably connected to the linear guide rail.

[0013] Furthermore, the swing belt path assembly includes a rotating bracket, a right-angle guide groove, and a contact block. It also includes an end face pressing unit, which includes a rodless cylinder, two linear guide rails, two guide frames, two sliders, and a cylinder bracket. The rotating bracket is fixed on the outside of one side of the right-angle guide groove, and its rear end is connected to the boom assembly. The rodless cylinder is installed outside the rotating bracket. The two linear guide rails are fixed on the upper and lower surfaces of the rotating bracket. The cylinder bracket is located on the mounting surface of the rodless cylinder. One ends of the two guide frames are integrally connected through the cylinder bracket, and the other ends are connected to the contact block through cam followers. Sliders are fixedly connected to the surfaces of the guide frames relative to the linear guide rails, and the sliders are slidably connected to the linear guide rails. The center frame is provided with tracks on the front upper parts of its upper and lower plates.

[0014] The packing method of the double-head steel coil threading packing machine of the present invention specifically includes the following steps: Ⅰ. When the steel coil falls to the packing station and packing conditions are met, the swing arm cylinders on both sides work simultaneously, driving the swing belt path assemblies on both sides to rotate through the rotating shaft, coupling, and rotating bracket, so that the swing belt path assemblies are separated from the center frame assembly and perpendicular to it. Ⅱ. The transverse trolley assembly advances along the base assembly to insert the center frame assembly into the core of the steel coil. When the receiving end of the sensor receives the information from the transmitting end, the transverse trolley assembly stops moving. At this time, the center frame assembly extends out of the core of the steel coil. Ⅲ. The swing arm cylinders on both sides work simultaneously to drive the swing belt path assemblies on both sides to rotate, so that the swing belt path assemblies are lapped with the center frame assembly. Ⅳ. The rotating motor drives the rotating frame assembly to rotate to the packing set angle through the rotating gear and slewing bearing. Ⅴ. The belt feeding device feeds belts to the packing subsystems on both sides at the same time. The packing belts are fed into the packing head through the guide groove, and then back into the packing head through the outlet guide groove, linear guide groove, right-angle guide groove, inlet guide groove, and inlet guide groove. The packing head takes in the belt, and the pushing cylinder pushes the packing head forward to complete the packing by making a buckle. Ⅵ. The swing arm cylinders on both sides work simultaneously to drive the swing belt path assemblies on both sides to rotate, so that the swing belt path assemblies are separated from the center frame assembly and perpendicular to it. Ⅶ. The transverse trolley assembly retreats along the base assembly to the initial position, so that the center frame assembly leaves the core of the steel coil. At this time, the steel coil is transported away.

[0015] Among them, when only two symmetric binding belts are required for the steel coil, in step Ⅳ: the rotating frame assembly rotates until the packing subsystems on both sides are in a horizontal state.

[0016] Among them, when four evenly distributed binding belts are required for the steel coil, steps Ⅳ and Ⅴ are repeated once before step Ⅵ: the first step Ⅳ: the rotating frame assembly rotates until the packing subsystems on both sides are at 45° to the horizontal plane to complete the first packing; the second step Ⅳ: the rotating frame assembly rotates in the reverse direction until the packing subsystems on both sides are at 90° to the first packing position for the second packing.

[0017] Among them, in step V: after the belt feeding device feeds the belt and before the packing head packs and retracts the belt, the rodless cylinder operates to move the two guide frames backward to press against the front end face of the steel coil; after the packing head finishes packing, the rodless cylinder operates to move the two guide frames forward to leave the front end face of the steel coil.

[0018] Among them, in step V: when the size change of the cores of the steel coils to be packed twice before and after is relatively large, before wire feeding, the packing head is driven by the transverse movement cylinder to move left and right so that the packing head is located behind the rear end face of the steel coil.

[0019] The advantages of the double-head steel coil through-core packing machine of the present invention are as follows: First, the left and right two packing subsystems enable two bundles of belts to be packed on the steel coil at one time: 1. It is not necessary to rotate the steel coil through the ground rollers for packing multiple bundles of belts, protecting the surface of the steel coil; 2. It greatly improves the packing efficiency, saves production costs, and improves the packing quality; Second, the left and right two packing subsystems are symmetrical left and right, ensuring the symmetry of the two packing straps; Third, by pressing the front end face of the steel coil with the guide frame, the belt is basically not in a swinging state, ensuring the even distribution and overall beauty between the tying belts; Fourth, the center frame assembly directly inserts into the core of the steel coil, and the transverse movement cylinder drives the packing head to move left and right, which can be suitable for steel coils with different core sizes, expanding the working range of the packing machine. Description of the Drawings

[0020] Figure 1 is a three-dimensional view of the packing machine of the present invention (with a steel coil).

[0021] Figure 2 is a three-dimensional view of the packing machine of the present invention (without a steel coil, the belt path mechanism is closed).

[0022] Figure 3 is Figure 2 the front view of

[0023] Figure 4 is Figure 3 the top view of

[0024] Figure 5 is Figure 4 the right view of

[0025] Figure 6 is a three-dimensional view of the packing machine of the present invention (without a steel coil, the belt path mechanism is open).

[0026] Figure 7 is Figure 6 the front view of

[0027] Figure 8 is Figure 7 the top view of

[0028] Figure 9 is Figure 7 the right view of

[0029] Figure 10 It is a three-dimensional view of the base assembly.

[0030] Figure 11 It is a three-dimensional view of the transverse trolley assembly.

[0031] Figure 12 It is a three-dimensional view of the transverse trolley assembly.

[0032] Figure 13 It is the three-dimensional Figure 1 .

[0033] Figure 14 It is the three-dimensional Figure 2 .

[0034] Figure 15 It is a three-dimensional view of the center frame assembly.

[0035] Figure 16 It is a three-dimensional view of the boom assembly.

[0036] Figure 17 It is a three-dimensional view of the packing head assembly.

[0037] Figure 18 It is a rear view of the packing head assembly.

[0038] Figure 19 It is a three-dimensional view of the swing arm cylinder assembly.

[0039] Figure 20 It is a three-dimensional view of the swing conveyor assembly.

[0040] Figure 21 It is a rear view of the swing conveyor assembly.

[0041] Figure 22 It is a side view of the swing conveyor assembly.

[0042] Figure 23 It is a schematic diagram of the swing of the swing conveyor assembly. Specific embodiments

[0043] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Embodiment 1

[0045] Such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 , Figure 7 , Figure 8 , Figure 9As shown in the figure, a double-head steel coil core-piercing strapping machine of the present invention includes a base assembly 1, a transverse moving trolley assembly 2, a rotating frame assembly 3, a center frame assembly 4, two belt guide mechanisms, and two strapping head assemblies 7. The two belt guide mechanisms and the two strapping head assemblies 7 are symmetrically arranged on the left and right with respect to the center frame assembly 4. The belt guide mechanism and the strapping head assembly 7 on the same side form a strapping subsystem with the center frame assembly 4. Each belt guide mechanism includes a large arm assembly 5, a swing arm cylinder assembly 6, and a swing belt guide assembly 8. The large arm assembly 5, the swing arm cylinder assembly 6, and the strapping head assembly 7 are all connected to the rotating frame assembly 3. The front and rear ends of the large arm assembly 5 are respectively connected to the swing belt guide assembly 8 and the swing arm cylinder assembly 6. The swing belt guide assembly 8 has two states of overlapping and separating with respect to the center frame assembly 4.

[0046] The working principle of the double-head steel coil core-piercing strapping machine of the present invention is as follows: When the steel coil is transported to the front of the strapping machine, the swing cylinder assembly 6 on each side drives the swing belt guide assembly 8 to rotate to separate it from the center frame assembly 4. The transverse moving trolley assembly 2 moves forward along the base assembly 1 so that the center frame assembly 4 passes through the inner diameter of the steel coil. The swing cylinder assembly 6 on each side drives the swing belt guide assembly 8 to rotate to overlap it with the center frame assembly 4. After the wire feeding mechanism feeds the wire, the strapping head assembly 7 winds up the wire to complete the strapping. Since the two strapping subsystems on the left and right work simultaneously, the strapping machine can complete the strapping at two symmetric positions of the steel coil at the same time.

[0047] The advantages of the double-head steel coil core-piercing strapping machine of the present invention are as follows: First, two steel belts can be strapped simultaneously each time, greatly improving the strapping efficiency and saving the production cost. Second, since the two strapping subsystems on the left and right are symmetric, the symmetry of the two strapping steel belts is ensured, achieving both beauty and ensuring the strapping quality.

[0048] Embodiment 2

[0049] As Figure 2 、 Figure 6 、 Figure 10 As shown in the figure, the double-head steel coil core-piercing strapping machine of the present invention: The base assembly 1 includes a base 11, a guide rail assembly 12, a rack 13, and a limit block 14. The rack 13 is fixed in the middle of the base 11. The two guide rail assemblies 12 are respectively fixed at both ends of the base 11 and are symmetrically arranged on the left and right with respect to the rack 13. A limit block 14 is provided at the front and rear of each guide rail assembly 12.

[0050] The transverse moving trolley assembly 2 moves forward and backward through the rack 13 to realize the core-piercing of the steel coil by the center frame assembly 4. The limit block 14 is used to limit the stroke of the transverse moving trolley assembly 2.

[0051] Embodiment 3

[0052] As Figure 2 、 Figure 6 、 Figure 11 、 Figure 12As shown in the figure, the double-head steel coil through-packaging machine of the present invention: The transverse moving trolley assembly 2 includes a frame 21, wheels 22, a transverse moving motor 23, a transverse moving gear 24, a rotating motor 25, a coupling 26, a connecting shaft 27, and a rotating gear 28; Four wheels 22 are arranged at the front and rear of the left and right ends of the bottom of the frame 21. The transverse moving motor 23 is fixed at the lower part of the frame 21. The transverse moving gear 24 is sleeved on the motor shaft of the transverse moving motor 23 and meshes with the rack 13; The rotating motor 25 is fixed in the middle of the frame 21, and the motor shaft is connected to the rear end of the connecting shaft 27 through the coupling 26. The rotating gear 28 is sleeved on the front end of the connecting shaft 27 and is connected to the rotating frame assembly 3.

[0053] When the transverse moving motor 23 works, it drives the transverse moving gear 24 to rotate, realizing the forward and backward movement of the transverse moving trolley assembly 2 along the rack 13. The wheels 22 move forward and backward along the guide rail assembly 12 to provide guidance for the forward and backward movement of the transverse moving trolley assembly 2; When the rotating motor 25 works, it drives the rotating gear 28 to rotate through the coupling 26 and the connecting shaft 27, and then drives the rotating frame assembly 3 to rotate.

[0054] Embodiment 4

[0055] As Figure 2 、 Figure 6 、 Figure 11 、 Figure 12 As shown in the figure, the double-head steel coil through-packaging machine of the present invention: The transverse moving trolley assembly 2 further includes a bearing seat 29. The bearing seat 29 is fixed at the middle front part of the frame 21, and the front end of the connecting shaft 27 is matched with the bearing in the bearing seat 29.

[0056] The bearing seat 29 supports the connecting shaft 27, improving the strength of the connecting shaft 27.

[0057] Embodiment 5

[0058] As Figure 2 、 Figure 6 、 Figure 13 、 Figure 14 As shown in the figure, the double-head steel coil through-packaging machine of the present invention: The rotating frame assembly 3 includes a rotating frame 31, a slewing bearing 32, two propulsion cylinders 33, and two connecting seats 34; The slewing bearing 32 is arranged in the middle behind the rotating frame 31. Its outer ring is fixedly connected to the rotating frame 31, and its inner ring is fixedly connected to the mounting plate at the front part of the frame 21. The outer ring of the slewing bearing 32 meshes with the rotating gear 28; The two propulsion cylinders 33 are symmetrically arranged on the left and right with respect to the slewing bearing 32. Their cylinder parts are fixedly connected to the left and right ends of the front of the rotating frame 31, and their rod parts are connected to the connecting seats 34. The connecting seats 34 are connected to the packing head assembly 7.

[0059] The rotating motor 25 drives the rotating gear 28 to rotate, causing the outer ring of the slewing bearing 32 to rotate and then driving the rotating frame 31 to rotate, thereby realizing the overall rotation of the rotating frame assembly 3, the center frame assembly 4, and the left and right bundling subsystems: If multiple steel bands need to be bundled, after the rotating motor 25 drives the whole to rotate to the required position, bundling is carried out. There is no need to rotate the steel coil through the ground rollers, and the surface of the steel coil will not be damaged.

[0060] Embodiment 6

[0061] As Figure 2 、 Figure 6 、 Figure 15 shown, the double-head steel coil core-piercing bundling machine of the present invention: The center frame assembly 4 includes a center frame 41 and two left and right guide groove units. Each guide groove unit includes a linear guide groove 42 and an outlet guide groove 43; the rear end of the center frame 41 is fixedly connected to the middle of the front of the rotating frame 31. Linear guide grooves 42 and outlet guide grooves 43 are symmetrically arranged on the left and right sides of the center frame 41, and the linear guide grooves 42 and the outlet guide grooves 43 are arranged front and back.

[0062] The center frame assembly 4 is used to pass through the core of the steel coil, and the linear guide groove 42 and the outlet guide groove 43 are used to complete the guiding of the steel band conveying. The packing tape coming out of the wire feeding device passes through the packing head, the outlet guide groove 43, the linear guide groove 42, the swinging tape path assembly 8, and the boom assembly 5 and then returns to the packing head for packing and wire collection.

[0063] Embodiment 7

[0064] As Figure 2 、 Figure 6 、 Figure 15 shown, the double-head steel coil core-piercing bundling machine of the present invention: The center frame assembly 4 further includes a buffer pad 44, and the buffer pad 44 is installed at the front end of the lower part of the center frame 41.

[0065] When the swinging tape path assembly 8 is closed, the buffer pad 44 plays a role in limiting the position and also plays a role in shock absorption and buffering.

[0066] Embodiment 8

[0067] As Figure 2 、 Figure 6 、 Figure 17 、 Figure 18 shown, the double-head steel coil core-piercing bundling machine of the present invention: The packing head assembly 7 includes a packing head bracket 71, a packing head 72, a guide groove 70, and an inlet guide groove 710; the packing head bracket 71 is in the shape of "├", the back of its horizontal plate is connected to the connecting seat 34, the front of the horizontal plate is connected to the packing head 72, and the inlet guide groove 710 and the guide groove 70 are respectively located on the front and back sides of the packing head 72.

[0068] The propulsion cylinder 33 operates, driving the strapping head 72 to move back and forth through the connecting seat 34 and the strapping head bracket 71 to achieve strapping: The strapping tape enters the strapping head 72 through the guide groove 70, and then returns to the strapping head 72 again through the outlet guide groove 43, the straight guide groove 42, the right-angle guide groove 82, the inlet guide groove 54, and the inlet guide groove 710. The strapping head 72 performs strapping and wire winding.

[0069] Embodiment 9

[0070] As Figure 2 、 Figure 6 、 Figure 17 、 Figure 18 As shown in [relevant figures], the double-head steel coil through-hole strapping machine of the present invention: The strapping head assembly 7 further includes upper and lower front-and-back movement guiding units. Each front-and-back movement guiding unit includes a linear guide rail 73 and a front-and-back slider 74; The linear guide rail 73 is fixed to the inner side of the boom assembly 5, and the front-and-back slider 74 is fixed to the outer side of the vertical plate of the strapping head bracket 71. The slider 74 is slidably connected to the linear guide rail 73.

[0071] When the propulsion cylinder 33 drives the strapping head 72 to move back and forth, the slider 74 moves back and forth along the linear guide rail 73, ensuring the stability of the back-and-forth movement of the strapping head 72.

[0072] Embodiment 10

[0073] As Figure 2 、 Figure 6 、 Figure 17 、 Figure 18 As shown in [relevant figures], the double-head steel coil through-hole strapping machine of the present invention: The strapping head assembly 7 further includes a left-and-right movement unit. The left-and-right movement unit includes a bottom plate 75, upper and lower transverse cylinders 76, a linear guide rail 77, and a slider 78; The bottom plate 75 is in a "T" shape. The transverse cylinders 76 are located in front of the horizontal plate of the strapping head bracket 71. The cylinder part thereof is connected to the inner side of the vertical plate of the strapping head bracket 71, and the rod end thereof is connected to the left end of the vertical plate of the bottom plate 75. The strapping head 72 is fixedly connected to the horizontal plate of the bottom plate 75; A linear guide rail 77 is provided in front of the horizontal plate of the strapping head bracket 71, and a slider 78 is provided behind the horizontal plate of the bottom plate 75. The slider 78 is slidably connected to the linear guide rail 77.

[0074] When the transverse cylinder 76 operates, it drives the strapping head 72 to move left and right through the bottom plate 75, so that the strapping head 72 is located behind the rear end face of the steel coil. In this way, strapping can be carried out regardless of the size of the aperture of the strapping head, thereby expanding the working range of the strapping machine; At the same time, the tension can also be adjusted to avoid the tensioning wheel in the strapping head from slipping during strapping. In addition, when the transverse cylinder 76 drives the strapping head 72 to move left and right, the slider 78 moves left and right along the linear guide rail 77, ensuring the stability of the left-and-right movement of the strapping head 72.

[0075] Embodiment 11

[0076] AsFigure 2 , Figure 6 , Figure 17 , Figure 18 As shown in Figure 18 , the double-head steel coil threading and packing machine of the present invention: The packing head assembly 7 further includes a detection rod 79, and the detection rod 79 is fixed on the bottom plate 75 and extends forward.

[0077] When the central frame assembly 4 of the packing machine threads the steel coil, it is realized by the transverse movement motor 23. However, if the packing head 72 is directly pushed into contact with the steel coil, it will damage the transverse movement motor 23. Therefore, when the distance between the packing head 72 and the rear end face of the steel coil is appropriate, the transverse movement motor 23 stops working. When the packing head 72 performs packing and wire winding, the propulsion cylinder 34 pushes the packing head 72 forward. When the detection rod 79 senses that the packing head 72 contacts the steel coil, the propulsion cylinder 34 stops working. Therefore, the detection rod 79 prevents damage to the transverse movement motor 23 while ensuring packing.

[0078] Embodiment 12

[0079] As Figure 2 , Figure 6 , Figure 20 , Figure 21 , Figure 22 As shown in Figure 22 , the double-head steel coil threading and packing machine of the present invention: The swing belt path assembly 8 includes a rotating bracket 81, a right-angle guide groove 82, and a contact block 83. It further includes an end face pressing unit, and the end face pressing unit includes a rodless cylinder 84, two linear guide rails 85, two guide frames 86, two sliders 87, and a cylinder bracket 88; the rotating bracket 81 is fixed on the outside of one side of the right-angle guide groove 82, and its rear end is connected to the boom assembly 5; the rodless cylinder 84 is installed outside the rotating bracket 81, the two linear guide rails 85 are fixed on the upper and lower surfaces of the rotating bracket 81, the cylinder bracket 88 is located on the installation surface of the rodless cylinder 84, one ends of the two guide frames 86 are connected together through the cylinder bracket 88, and the other ends are connected to the contact block 83 through a cam follower; a slider 87 is fixedly connected to the surface of the guide frame 86 relative to the linear guide rail 85, and the slider 87 is slidably connected to the linear guide rail 85; the central frame 41 is provided with tracks 45 on the front upper parts of its upper and lower plates.

[0080] When the swing belt path assembly 8 is lapped with the central frame assembly 4, the rodless cylinder 84 works, and the two guide frames 86 move back and forth relative to the linear guide rails 85 through the sliders 87, driving the contact block 33 to move back and forth along the central frame 51 through the track 45, realizing the pressing and releasing of the front end face of the steel coil 11 by the guide frame 86. In this way, during packing, in addition to the steel belt at the packing head contacting the rear end face of the steel coil, the guide frame 86 also presses the front end face of the steel coil, that is, both parallel sides of the steel belt will contact the steel coil. Therefore, after the packing and wire winding are completed, the packing belt basically will not be in a swinging state, which not only ensures beauty but also ensures the even distribution between the packing belts, thereby improving the packing quality.

[0081] As Figure 16 、 Figure 19 shown, in the double-head steel coil through-hole strapping machine of the present invention: the boom assembly 5 includes a boom 51, a coupling 52, a rotating shaft 53, an inlet guide groove 54, and a sensor 55, and the swing cylinder assembly 6 includes a base 61, a swing cylinder 62, a swing arm 63, and a keyless bushing 64; the rear end of the boom 51 is fixedly connected to one end of the rotating frame 31, an inlet guide groove 54 is provided in the middle of the inner side of the boom 51, and the sensor 55 is provided on the inner side of the boom, one being a transmitting end and the other being a receiving end; the base 61 is fixedly connected to the side surface of the rotating frame 31, the front and rear ends of the middle of the cylinder part of the swing cylinder 62 are hinged to the front and rear support plates of the base 61, one end of the swing arm 63 is hinged to the rod end of the swing cylinder 62, a keyless bushing 64 is provided in the hole at the other end, the rotating shaft 53 passes through the boom 51, its rear end is fixedly connected to the keyless bushing 64, and its front end is connected to the rotating bracket 81 through the coupling 52.

[0082] When the swing cylinder 62 works, it drives the rotating shaft 53 to swing through the swing arm 63 and the keyless bushing 64, and the rotating shaft 53 drives the entire swing belt path assembly 8 to swing through the coupling 52, so as to achieve the lapping and separation from the center frame assembly 4.

[0083] Embodiment 13

[0084] As Figure 2 、 Figure 6 、 Figure 20 、 Figure 21 、 Figure 22 shown, a swing belt path mechanism of the present invention: the swing belt path assembly 8 further includes left and right pressing plates 80, and the pressing plates 80 are fixed behind the guide frame 86 and are made of flexible materials.

[0085] When the guide frame 86 presses the front end face of the steel coil, the flexible pressing plate 80 can prevent the generation of indentation and damage to the front end face of the steel coil.

[0086] Embodiment 14

[0087] As Figure 2 、 Figure 6 、 Figure 20 、 Figure 21 、 Figure 22 shown, a swing belt path mechanism of the present invention: the swing belt path assembly 8 further includes left and right guide plates 89, the guide plates 89 are fixed in front of the guide frame 86, and the gap between the left and right two guide plates 89 gradually decreases from the rodless cylinder to the contact block.

[0088] The gap between the upper and lower guide plates 89 gradually decreases, preventing the strapping belt from shaking when strapping and tightening, and ensuring that the strapping belt is stably pressed on the front end face of the steel coil.

[0089] Embodiment 15

[0090] The packing method of the double-head steel coil through-core packing machine of the present invention specifically comprises the following steps:

[0091] Ⅰ. When the steel coil 11 falls to the packing station and meets the packing conditions, the swing arm cylinders 61 on both sides work simultaneously, driving the swing belt path assemblies 8 on both sides to rotate (in the arrow direction shown in Figure a below) through the rotating shaft 53, coupling 5, and rotating bracket 81, so that the swing belt path assemblies 8 are separated from the center frame assembly 4 and are perpendicular to it (as shown in Figure b below); Figure 23 Figure 23

[0092]

[0093] Ⅱ. The transverse trolley assembly 2 advances along the base assembly 1 to insert the center frame assembly 4 into the core of the steel coil 11. When the receiving end of the sensor 55 receives the information from the transmitting end, the transverse trolley assembly 2 stops moving. At this time, the center frame assembly 4 extends out from the core of the steel coil 11;

[0094] Ⅲ. The swing arm cylinders 61 on both sides work simultaneously to drive the swing belt path assemblies 8 on both sides to rotate in the reverse direction, so that the swing belt path assemblies 8 are lapped with the center frame assembly 4;

[0095] Ⅳ. The rotating motor 25 drives the rotating frame assembly 3 to rotate to the packing set angle through the rotating gear 28 and slewing bearing 32;

[0096] Ⅴ. The belt feeding device 10 feeds belts to the packing subsystems on both sides simultaneously. The packing belts are fed into the packing head 72 through the guide groove 70, and then return to the packing head 72 through the outlet guide groove 43, straight guide groove 42, right-angle guide groove 2, inlet guide groove 52, and inlet guide groove 710; the packing head 72 winds the belts, and the pushing cylinder 34 pushes the packing head 72 forward to complete the packing by making a buckle;

[0097] Ⅵ. The swing arm cylinders 61 on both sides work simultaneously to drive the swing belt path assemblies 8 on both sides to rotate, so that the swing belt path assemblies 8 are separated from the center frame assembly 4 and are perpendicular to it;

[0098] Ⅶ. The transverse trolley assembly 2 retreats along the base assembly 1 to the initial position, so that the center frame assembly 4 leaves the core of the steel coil, and at this time, the steel coil is transported away.

[0099] The belt feeding device 10 feeds belts to the packing subsystems on both sides simultaneously, and the packing heads 72 on both sides pack simultaneously. Therefore, the packing machine completes the packing of the symmetric positions of the steel coil 11 at the same time. Therefore, the present invention realizes the full-automatic packing of the steel coil through the core and packs two binding belts at a time, greatly improving the packing efficiency and saving the production cost; at the same time, since the left and right packing subsystems are symmetric left and right, the symmetry of the two packing binding belts is ensured, achieving both beauty and ensuring the packing quality.

[0099] When the steel coil 11 falls to the packing station and meets the packing conditions, there are support members at the lower part of the steel coil 11 to support it.

[0100] Example 16

[0101] When only two symmetric binding straps are needed for the steel coil, in step Ⅳ: the rotary frame assembly 3 rotates until the packing subsystems on both sides are in a horizontal state.

[0102] Example 17

[0103] When four evenly distributed binding straps are needed for the steel coil, repeat step Ⅳ and step Ⅴ once before step Ⅵ: in the first step Ⅳ, the rotary frame assembly 3 rotates until the packing subsystems on both sides form an angle of 45° with the horizontal plane to complete the first packing; in the second step Ⅳ, the rotary frame assembly 3 rotates in the reverse direction until the packing subsystems on both sides form an angle of 90° with the first packing position for the second packing.

[0104] In this way, through two rotations of the rotary frame assembly 3, four evenly distributed binding straps can be made on the steel coil, and it is no longer necessary to rotate the steel coil through the ground rollers, which will not damage the surface of the steel coil.

[0105] Example 18

[0106] In step Ⅴ: after the belt feeding device 10 feeds the belt and before the packing head 72 packs and takes in the belt, the rodless cylinder 84 works to move the two guide frames 86 backward to press against the front end face of the steel coil 11; after the packing head 72 finishes packing, the rodless cylinder 84 works to move the two guide frames 86 forward to leave the front end face of the steel coil 11.

[0107] Before the packing head 72 packs and takes in the belt, the guide frame 86 presses against the front end face of the steel coil 11. In this way, during packing, the steel belts at the guide frame and the packing head will press against the front and rear end faces of the steel coil, that is, the two parallel sides of the steel belt will contact the steel coil. Therefore, after the packing and wire winding are completed, the packing belt will basically not swing, which not only ensures aesthetics but also ensures the even distribution between the packing belts, thus improving the packing quality. After the packing head packs, the guide frame 86 leaves the front end face of the steel coil 11, which can avoid the friction between the guide frame 86 and the front end face of the steel coil caused by the rotation of the swinging belt path assembly 8 and affect the end face quality of the steel coil.

[0108] Example 19

[0109] In step Ⅴ: when the size change of the coil centers of the steel coils to be packed twice before and after is relatively large, before wire feeding, the transverse movement cylinder 7 drives the packing head 72 to move left and right so that the packing head 72 is located behind the rear end face of the steel coil to achieve packing, thereby expanding the working range of the packing machine.

[0110] The advantages of the double-head steel coil through-core strapping machine of the present invention are as follows: First, the left and right strapping subsystems enable two strapping tapes to be strapped simultaneously at one time: 1. It is not necessary to rotate the steel coil through ground rollers for strapping multiple strapping tapes, thus protecting the surface of the steel coil; 2. It greatly improves the strapping efficiency, saves production costs, and improves the strapping quality. Second, the left and right strapping subsystems are symmetrical left and right, ensuring the symmetry of the two strapping tapes. Third, the front end face of the steel coil is pressed by the guide frame, so that the strapping tape hardly sways, ensuring the even distribution between the strapping tapes and the overall aesthetics. Fourth, the central frame assembly is directly inserted into the core of the steel coil, and the transverse movement cylinder drives the strapping head to move left and right, which can be suitable for steel coils with different core sizes, expanding the working range of the strapping machine.

[0111] In short, on the premise of not requiring the rotation of the ground rollers, the strapping machine of the present invention realizes the strapping of two strapping tapes at one time and can also realize the strapping of multiple strapping tapes, greatly improving the strapping efficiency and quality; at the same time, it meets the position requirements between the strapping tapes, ensuring both aesthetics and strapping quality, and realizing the full-automatic strapping of the steel coil through-core. In short, all inventions and creations based on the non-rotation of the ground rollers and the rotation of the strapping machine are within the protection scope of the present invention.

[0112] Of course, the strapping machine of the present invention is not limited to the number of strapping tapes described in this application. Theoretically, it can strap odd and even strapping tapes with uniform and non-uniform settings, greatly expanding the application range of the strapping machine.

Claims

1. A double-head steel coil threading and packing machine, which comprises a base assembly (1,) and a transverse trolley assembly (2), and is characterized in that: It also includes a rotary frame assembly (3), a center frame assembly (4), two belt guide mechanisms, and two packing head assemblies (7). The two belt guide mechanisms and the two packing head assemblies (7) are symmetrically arranged left and right with respect to the center frame assembly (4). The belt guide mechanism and the packing head assembly (7) on the same side form a packing subsystem with the center frame assembly (4). Each belt guide mechanism includes a large arm assembly (5), a swing arm cylinder assembly (6), and a swing belt guide assembly (8). The large arm assembly (5), the swing arm cylinder assembly (6), and the packing head assembly (7) are all connected to the rotary frame assembly (3). The front and rear ends of the large arm assembly (5) are respectively connected to the swing belt guide assembly (8) and the swing arm cylinder assembly (6). The swing belt guide assembly (8) has two states of overlapping and separating with respect to the center frame assembly (4).

2. The double-head steel coil through-hole strapping machine according to claim 1, characterized in that: The base assembly (1) includes a base (11), a guide rail assembly (12), a rack (13), and a limit block (14). The rack (13) is fixed in the middle of the base (11). The two guide rail assemblies (12) are respectively fixed at both ends of the base (11) and are symmetrically arranged left and right with respect to the rack (13). A limit block (14) is provided at the front and rear of each guide rail assembly (12).

3. The double-head steel coil through-hole strapping machine according to claim 2, characterized in that: The transverse trolley assembly (2) includes a frame (21), wheels (22), a transverse movement motor (23), a transverse movement gear (24), a rotation motor (25), a coupling (26), a connecting shaft (27), and a rotation gear (28). The four wheels (22) are arranged at the front and rear of the left and right ends at the bottom of the frame (21). The transverse movement motor (23) is fixed at the lower part of the frame (21). The transverse movement gear (24) is sleeved on the motor shaft of the transverse movement motor (23) and meshes with the rack (13). The rotation motor (25) is fixed in the middle of the frame (21). The motor shaft is connected to the rear end of the connecting shaft (27) through the coupling (26). The rotation gear (28) is sleeved on the front end of the connecting shaft (27) and is connected to the rotary frame assembly (3).

4. The double-head steel coil through-core strapping machine according to claim 3, characterized in that: The rotary frame assembly (3) includes a rotary frame (31), a slewing bearing (32), two propulsion cylinders (33), and two connecting seats (34). The slewing bearing (32) is arranged in the middle behind the rotary frame (31). Its outer ring is fixedly connected to the rotary frame (31), and its inner ring is fixedly connected to the mounting plate at the front of the frame (21). The outer ring of the slewing bearing (32) meshes with the rotation gear (28). The two propulsion cylinders (33) are symmetrically arranged left and right with respect to the slewing bearing (32). Their cylinder parts are fixedly connected to the left and right ends in front of the rotary frame (31), and the rod parts are connected to the connecting seats (34). The connecting seats (34) are connected to the packing head assembly (7).

5. The double-head steel coil core-piercing strapping machine according to claim 4, characterized in that: The center frame assembly (4) includes a center frame (41) and two left and right guide groove units. Each guide groove unit includes a linear guide groove (42) and an outlet guide groove (43). The rear end of the center frame (41) is fixedly connected to the middle in front of the rotary frame (31). The linear guide grooves (42) and the outlet guide grooves (43) are symmetrically arranged on the left and right sides of the center frame (41), and the linear guide grooves (42) and the outlet guide grooves (43) are arranged front and rear.

6. The double-head steel coil through-hole packing machine according to claim 1, characterized in that: The packing head assembly (7) includes a packing head bracket (71), a packing head (72), a guide groove (70), and an inlet guide groove (710); the packing head bracket (71) is in the shape of "├", the rear of its horizontal plate is connected to the connecting seat (34), the front of the horizontal plate is connected to the packing head (72), and the inlet guide groove (710) and the guide groove (70) are respectively located on the front and rear sides of the packing head (72).

7. The double-head steel coil through-core strapping machine according to claim 6, characterized in that: The packing head assembly (7) further includes two front-back moving guiding units, and each front-back moving guiding unit includes a linear guide rail (73) and a front-back slider (74); the linear guide rail (73) is fixed to the inner side of the boom assembly (5), the front-back slider (74) is fixed to the outer side of the vertical plate of the packing head bracket (71), and the slider (74) is slidably connected to the linear guide rail (73).

8. The double-head steel coil through-packaging machine according to claim 6, characterized in that: The packing head assembly (7) further includes a left-right moving unit, and the left-right moving unit includes a bottom plate (75), two horizontal moving cylinders (76), a linear guide rail (77), and a slider (78); the bottom plate (75) is in the shape of "T", the horizontal moving cylinders (76) are located in front of the horizontal plate of the packing head bracket (71), the cylinder part thereof is connected to the inner side of the vertical plate of the packing head bracket (71), and the rod end thereof is connected to the left end of the vertical plate of the bottom plate (75), and the packing head (72) is fixedly connected to the horizontal plate of the bottom plate (75); a linear guide rail (77) is provided on the front of the horizontal plate of the packing head bracket (71), a slider (78) is provided on the rear of the horizontal plate of the bottom plate (75), and the slider (78) is slidably connected to the linear guide rail (77).

9. The double-head steel coil through-hole strapping machine according to claim 5, characterized in that: The swinging belt path assembly (8) includes a rotating bracket (81), a right-angled guide groove (82), and a contact block (83), and it further includes an end face pressing unit, and the end face pressing unit includes a rodless cylinder (84), two linear guide rails (85), two guide frames (86), two sliders (87), and a cylinder bracket (88); the rotating bracket (81) is fixed to the outer side of one side of the right-angled guide groove (82), and its rear end is connected to the boom assembly (5); the rodless cylinder (84) is installed on the outside of the rotating bracket (81), the two linear guide rails (85) are fixed to the upper and lower surfaces of the rotating bracket (81), the cylinder bracket (88) is located on the mounting surface of the rodless cylinder (84), one ends of the two guide frames (86) are connected together through the cylinder bracket (88), and the other ends are connected to the contact block (83) through a cam follower; a slider (87) is fixedly connected to the surface of the guide frame (86) relative to the linear guide rail (85), and the slider (87) is slidably connected to the linear guide rail (85); the center frame (41) is provided with tracks (45) on the front upper parts of its upper and lower plates.

10. The packing method of the double-head steel coil through-core packing machine, and its specific steps are as follows: Ⅰ. When the steel coil falls to the packing station and meets the packing conditions, the swing arm cylinders on both sides work simultaneously, and drive the swinging belt path assemblies on both sides to rotate through the rotating shaft, coupling, and rotating bracket, so that the swinging belt path assemblies are separated from the center frame assembly and are perpendicular to it; Ⅱ. The transverse trolley assembly advances along the base assembly to insert the centering frame assembly into the core of the steel coil. When the receiving end of the sensor receives the information from the transmitting end, the transverse trolley assembly stops moving. At this time, the centering frame assembly 4 extends out from the core of the steel coil. Ⅲ. The swing arm cylinders on both sides work simultaneously to drive the swing belt path assemblies on both sides to rotate, so that the swing belt path assemblies are lapped with the centering frame assembly. Ⅳ. The rotating motor drives the rotating frame assembly to rotate to the packaging setting angle through the rotating gear and the slewing bearing. Ⅴ. The belt feeding device feeds the belt to the packaging subsystems on both sides at the same time. The packaging belt is fed into the packaging head through the guide groove and then returns to the packaging head through the outlet guide groove, the straight guide groove, the right-angle guide groove, the inlet guide groove, and the inlet guide groove. The packaging head takes in the belt, and the pushing cylinder pushes the packaging head forward to complete the buckling for packaging. Ⅵ. The swing arm cylinders on both sides work simultaneously to drive the swing belt path assemblies on both sides to rotate, so that the swing belt path assemblies are separated from the centering frame assembly and are perpendicular to it. Ⅶ. The transverse trolley assembly retreats along the base assembly to the initial position, so that the centering frame assembly leaves the core of the steel coil. At this time, the steel coil is transported away.

11. The packing method according to claim 10, characterized in that: When only two symmetric bundling belts are required for the steel coil, in step Ⅳ: the rotating frame assembly rotates until the packaging subsystems on both sides are in a horizontal state.

12. The packaging method according to claim 10, wherein: When four evenly distributed bundling belts are required for the steel coil, steps Ⅳ and Ⅴ are repeated once before step Ⅵ: In the first step Ⅳ, the rotating frame assembly rotates until the packaging subsystems on both sides form an angle of 45° with the horizontal plane to complete the first packaging; in the second step Ⅳ, the rotating frame assembly rotates in the reverse direction until the packaging subsystems on both sides form an angle of 90° with the first packaging position for the second packaging.

13. The packaging method according to claim 10, wherein: in step Ⅴ, after the belt feeding device feeds the belt and before the packaging head takes in the belt for packaging, the rodless cylinder works to move the two guide frames backward to press the front end face of the steel coil; after the packaging head completes the packaging, the rodless cylinder works to move the two guide frames forward to leave the front end face of the steel coil.

14. The packaging method according to claim 10, wherein: in step Ⅴ, when the size change of the cores of the steel coils to be packaged before and after is relatively large, before feeding the wire, the transverse cylinder drives the packaging head to move left and right so that the packaging head is located behind the rear end face of the steel coil.

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