Steel belt guiding and packing machine

Abstract

The invention relates to the technical field of packaging, in particular to a steel belt guiding and packaging machine which comprises a base, a bundling unit is installed on the base and comprises an annular guide rail and a packaging mechanism, two tensioning units which are symmetrically arranged front and back are installed on the annular guide rail, and an attaching unit is installed at the position, corresponding to the annular guide rail, of the base. The base is further provided with two gathering units which are symmetrically arranged left and right. The gathering units are used for gathering and stacking hexagonal steel pipes. The steel pipe packing device is used for packing stacked steel pipes, when the ends of steel belts are tightly attached to the stacked steel pipes and the steel belts are tightened, the steel belts can be in a straightened state, the steel belts and the annular guide rail are arranged in the middle in the left-right direction, and then the steel belts are prevented from deflecting or derailing in the axial direction of the steel pipes; and meanwhile, the problem that the bundled steel belts are too loose or too tight can be solved, and the bundling quality of the stacked steel pipes is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of packaging, and specifically to a steel belt guiding strapping machine. Background Art

[0002] A steel belt strapping machine refers to a device that straps products or packages by means of steel belt winding. It is widely used in the fields of steel pipe logistics transportation and warehousing. As Figure 6 shown, when strapping steel pipes, the steel pipes are usually stacked in a honeycomb shape, i.e., hexagonal arrangement, and then the stacked steel pipes are strapped with a steel belt to improve the stability and safety of the stacked steel pipes.

[0003] Existing steel belt strapping machines usually adopt a roller magnetic adsorption type annular guide path as the steel belt guiding mechanism. Through the combined action of magnetic attraction and mechanical guiding of the rollers and the two side plates, the steel belt is guided along a preset annular path around the outside of the stacked steel pipes. Then, the steel belt strapping machine first presses the end of the steel belt tightly against the stacked steel pipes, and then performs operations such as tightening, buckling, and cutting the steel belt to achieve the strapping of the stacked steel pipes.

[0004] The following problems exist when strapping steel pipes currently: 1. The steel belt deflects axially along the steel pipe or even derails: When pressing the end of the steel belt tightly against the stacked steel pipes and tightening the steel belt, the steel belt is in a bent and relaxed state during this process. Especially when the width of the steel belt is smaller than the distance between the two side plates, the side of the steel belt cannot be limited, and thus there may be a problem that the relaxed and bent steel belt deflects axially along the steel pipe under the action of its elasticity and even breaks away from the annular guide path, which requires stopping the machine and resetting the steel belt, reducing the strapping efficiency of the stacked steel pipes.

[0005] 2. Loose strapping: Currently, the steel belt is tightened only by top tightening. Since the steel pipes are usually stacked in a honeycomb shape, the steel belt needs to cross multiple corners of the hexagon during the tightening process. Each time it passes through a corner, the contact friction between the steel belt and the steel pipe will cause tension loss, resulting in uneven tension distribution of the steel belt corresponding to the lower side of the hexagon during the tightening process. As a result, the strapped steel belt may have problems of local over-tightening or over-loosening, affecting the strapping quality of the stacked steel pipes. Summary of the Invention

[0006] To solve the above technical problems, the present invention adopts the following technical solutions. A steel belt guiding and packing machine includes a base, on which a bundling unit is installed. The bundling unit includes an annular guide rail and a packing mechanism. Two tensioning units arranged symmetrically front and back are installed on the annular guide rail. A flattening unit is installed on the base at a position corresponding to the annular guide rail. Two gathering units arranged symmetrically left and right are also installed on the base. The gathering units are used to gather and stack steel pipes in a hexagonal shape. The tensioning unit includes arc-shaped mounting plates fixedly installed on the left and right sides of the annular guide rail through a plurality of connecting blocks. The inner arc surface of the arc-shaped mounting plate is installed with tensioning rods through a plurality of arc-shaped and evenly arranged elastic connection groups. The opposite sides of the two tensioning rods arranged left and right are in contact with each other and are both set as frustum structures. A centering and limiting group is installed on the tensioning rods. Linkage groups are installed on the opposite sides of the two arc-shaped mounting plates. The linkage groups and the tensioning rods cooperate to drive the centering and limiting group to make the steel belt and the annular guide rail centered left and right. The flattening unit includes two synchronizing groups arranged symmetrically front and back installed on the base. Two elastic pressing rods arranged symmetrically left and right are installed on the synchronizing groups. The upper ends of the elastic pressing rods are all hinged with a flattening plate. The synchronizing groups are used to drive the flattening plate to flatten the steel belt along the lower contour of the hexagon from the middle to both sides through the elastic pressing rods, so that the tension received by the steel belt is evenly distributed.

[0007] Preferably, the gathering unit includes a pressing group installed on the base. Two L-shaped transmission plates arranged symmetrically front and back are installed on the pressing group. Gathering plates are fixedly installed on the opposite sides of the upper ends of the horizontal sections of the two transmission plates. The upper ends of the two gathering plates are inclined in the direction away from each other.

[0008] Preferably, the pressing group includes two pressing plates arranged symmetrically front and back slidably installed on the base. A first synchronizing member is connected between the two pressing plates and the base. The upper end of the pressing plate is slidably connected to the vertical end of its corresponding transmission plate front and back. A pressing spring is connected between the pressing plate and the transmission plate.

[0009] Preferably, the elastic connection group includes a connecting plate fixedly installed on the arc-shaped mounting plate. The tensioning rod slides through the corresponding connecting plate left and right. A return spring is connected between the tensioning rod and its corresponding connecting plate.

[0010] Preferably, the linkage group includes an arc-shaped electric slider assembly installed on the arc-shaped mounting plate. An arc-shaped plate is installed on the side of the arc-shaped electric slider assembly away from the arc-shaped mounting plate. A plurality of linkage wedge blocks are arranged on the side of the arc-shaped plate away from the arc-shaped mounting plate. The distribution positions of the linkage wedge blocks correspond one by one to the installation positions of the tensioning rods. The opposite sides of the two tensioning rods arranged left and right are both set as hemispherical structures and are in contact with the inclined surfaces of their corresponding linkage wedge blocks. The linkage wedge blocks are fixedly connected to the corresponding arc-shaped plates through L-shaped connecting rods.

[0011] Preferably, a plurality of synchronizing link rods arranged in an arc are fixedly installed on the opposite sides of the left and right arc-shaped plates, and the synchronizing link rods are located outside the arc-shaped mounting plate.

[0012] Preferably, the centering and limiting group includes a centering and limiting plate slidably sleeved on the tensioning rod, and a plurality of top extension springs are circumferentially and uniformly arranged between the centering and limiting plate and the tensioning rod.

[0013] Preferably, circumferentially distributed slots are formed on the opposite sides of the two tensioning rods arranged left and right, and the slots are used for inserting the ends of the two tensioning rods arranged left and right together.

[0014] Preferably, a square groove is formed in the upper side of the base corresponding to the position of the annular guide rail. The synchronizing group includes a synchronizing plate. The synchronizing plates corresponding to the two synchronizing groups are both slidably installed front and back in the square groove. A second synchronizing member is jointly installed between the two synchronizing plates and the base. The upper end of the synchronizing plate is provided with a lifting plate through a plurality of multi-stage telescopic rods uniformly arranged from left to right. The multi-stage telescopic rod is an elastic telescopic structure. Two synchronizing blocks arranged symmetrically left and right are slidably installed left and right on the upper side of the lifting plate through a third synchronizing member, and the upper ends of the synchronizing blocks are fixedly connected to their corresponding elastic tightening rods.

[0015] Preferably, round rods are fixedly installed at both the left and right ends of the lifting plate, and mating plates are fixedly installed on the upper side of the base corresponding to the positions of the round rods. The upper ends of the opposite sides of the two mating plates arranged front and back are both provided with inclined surfaces that cooperate with the corresponding round rods.

[0016] The beneficial effects of the present invention are as follows: 1. When the end of the steel strip is closely attached to the stacked steel pipes and the steel strip is tightened, the present invention makes the steel strip in a straight state by setting the tensioning unit, and the tensioning unit can also make the steel strip and the annular guide rail centered left and right, so that the bundling position of the steel strip and the stacked steel pipes is accurately aligned, thereby preventing the steel strip from deflecting or derailing along the axial direction of the steel pipe, and ensuring the packing efficiency of the stacked steel pipes.

[0017] 2. The present invention makes the steel strip elastically adhere to the steel strip corresponding to the middle part of the lower contour of the hexagon by setting the flattening plate, and flattens the steel strip from the middle to both sides along the lower contour of the hexagon. During the tightening process of the steel strip, the tension received by the steel strip corresponding to the lower contour is evenly distributed, thereby preventing the problem of the steel strip being too loose or too tight after bundling. At the same time, the present invention makes the stacked steel pipes closely gathered together by setting the gathering unit, ensuring the bundling quality of the stacked steel pipes.

[0018] 3. The present invention performs secondary centering and alignment on the steel strip by setting two centering and limiting plates, thereby ensuring that the steel strip and the annular guide rail are always centered left and right, and accurately aligning the bundling position of the steel strip and the stacked steel pipes, thereby further ensuring the packing efficiency of the stacked steel pipes. Description of the Drawings

[0019] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0020] Figure 1 It is a schematic three-dimensional structure diagram of the present invention.

[0021] Figure 2 It is a schematic three-dimensional structure diagram of a partial structure of the annular guide rail and the tensioning unit of the present invention.

[0022] Figure 3 It is a state diagram when the ends of two tensioning rods arranged left and right of the present invention are inserted together.

[0023] Figure 4 It is a schematic three-dimensional structure diagram of the flattening unit and the gathering unit after removing a part of the base of the present invention.

[0024] Figure 5 It is a schematic three-dimensional structure diagram of the flattening unit after removing a part of the base of the present invention.

[0025] Figure 6 It is a state diagram when bundling the stacked steel pipes of the present invention.

[0026] Reference numerals: 1, base; 11, mating plate; 2, bundling unit; 21, annular guide rail; 22, packing mechanism; 3, tensioning unit; 31, arc-shaped mounting plate; 32, elastic connection group; 321, connecting plate; 322, return spring; 33, tensioning rod; 331, slot; 34, centering and limiting group; 341, limiting plate; 342, top extension spring; 35, linkage group; 351, arc-shaped electric slider assembly; 352, arc-shaped plate; 353, linkage wedge block; 354, L-shaped connecting rod; 355, synchronous connecting rod; 4, flattening unit; 41, synchronous group; 411, synchronous plate; 412, synchronizing member two; 413, synchronous block; 414, synchronizing member three; 415, multi-stage telescopic rod; 416, lifting plate; 417, round rod; 42, elastic abutting rod; 43, flattening plate; 5, gathering unit; 51, pressing group; 511, pressing plate; 512, synchronizing member one; 513, pressing spring; 52, transmission plate; 53, gathering plate. Detailed implementation manners

[0027] The embodiments described below are exemplary and are only used to explain the present invention and should not be construed as a limitation to the present invention. For those not specified in the embodiments regarding specific technologies or conditions, they shall be carried out according to the technologies or conditions described in the literature in this field or according to the product specifications.

[0028] Refer to Figure 1 and Figure 6, A steel strip guiding strapping machine, comprising a base 1, on which a strapping unit 2 is installed. The strapping unit 2 includes an annular guide rail 21, on which two tensioning units 3 are symmetrically arranged front and back. A flattening unit 4 is installed on the base 1 at a position corresponding to the annular guide rail 21. Two gathering units 5 are symmetrically arranged left and right on the base 1, and the gathering units 5 are used to gather and stack steel pipes in a hexagonal shape.

[0029] It should be noted that the strapping unit 2 includes a mounting frame fixedly installed in the middle of the upper end of the base 1. The annular guide rail 21 is fixedly installed on the mounting frame. The middle part of the upper end of the annular guide rail 21 is set as an open structure. A packing mechanism 22 is installed on the mounting frame. The packing mechanism 22 adopts the prior art. The packing mechanism 22 is used to feed the steel strip from the opening of the annular guide rail 21 into the annular guide rail 21. At the same time, the packing mechanism 22 can also tightly attach the end of the steel strip to the stacked steel pipes, and perform operations such as tightening, buckling and cutting the steel strip. The annular guide rail 21 adopts the prior art, which is adsorbed on the surface of the steel strip by a magnet and is guided through two side plates and bearings to realize the surrounding state of the steel strip around the stacked steel pipes during packaging. A conveying roller assembly is installed on the upper right side of the base 1, and the conveying roller assembly is used to convey the stacked steel pipes to the right.

[0030] The present invention is used for strapping the stacked steel pipes. When the end of the steel strip is tightly attached to the stacked steel pipes and the steel strip is tightened, the present invention can make the steel strip in a straight state, and make the steel strip and the annular guide rail 21 arranged centered left and right, thereby preventing the steel strip from skewing or derailing along the axial direction of the steel pipe, ensuring the packing efficiency of the stacked steel pipes. At the same time, the present invention can also flatten the steel strip from the middle to both sides along the lower contour of the hexagon, so that the tension received by the steel strip corresponding to the lower contour is evenly distributed, preventing the problem of the steel strip being too loose or too tight after strapping, and ensuring the strapping quality of the stacked steel pipes.

[0031] Specifically, first, the stacked steel pipes (in a hexagonal honeycomb shape) are conveyed into the annular guide rail 21 by an external conveying device, and the strapping position of the stacked steel pipes is aligned with the middle of the annular guide rail 21. At the same time, the packing mechanism 22 feeds the steel strip from the opening of the annular guide rail 21 into the annular guide rail 21. Then, control the two gathering units 5 to gather the stacked steel pipes. Next, control the packing mechanism 22 to tightly attach the end of the steel strip to the stacked steel pipes. During this process, the steel strip is in a tensioned and straight state under the action of the tensioning unit 3. At the same time, the tensioning unit 3 can also make the steel strip and the annular guide rail 21 arranged centered left and right, so that the strapping position of the steel strip and the stacked steel pipes is accurately aligned. Thus, when the width of the steel strip is less than the distance between the two side plates, the steel strip can be prevented from skewing or derailing along the axial direction of the steel pipe.

[0032] Control the packing mechanism 22 to tighten the steel belt again. During the tightening process of the steel belt, the steel belt remains in a straightened state under the action of the tensioning unit 3, and is arranged horizontally centered with the annular guide rail 21. When the steel belt fits against the lower side of the hexagon, control the flattening unit 4 to flatten the steel belt from the middle to both sides along the contour of the lower side of the hexagon. After the tightening of the steel belt is completed, control the packing mechanism 22 to perform operations such as buckling and cutting the steel belt. Finally, control the external conveying equipment and the conveying roller assembly to convey the palletized steel pipes to the right, and repeat the above operations to realize the packing operation of the palletized steel pipes.

[0033] Refer to Figure 1 、 Figure 4 and Figure 6 , the gathering unit 5 includes a pressurizing group 51 installed on the base 1. Two L-shaped drive plates 52 arranged symmetrically front and back are installed on the pressurizing group 51. Gathering plates 53 are fixedly installed on the opposite sides of the upper ends of the horizontal sections of the two drive plates 52, and the upper ends of the two gathering plates 53 are inclined in the direction away from each other.

[0034] Refer to Figure 1 and Figure 4 , the pressurizing group 51 includes two pressurizing plates 511 arranged symmetrically front and back and slidably installed on the base 1. A first synchronizing member 512 is connected between the two pressurizing plates 511 and the base 1. The upper end of the pressurizing plate 511 is slidably connected to the vertical end of the corresponding drive plate 52 front and back, and a pressurizing spring 513 is connected between the pressurizing plate 511 and the drive plate 52.

[0035] It should be noted that the first synchronizing member 512 includes a first synchronizing screw. Two threaded sections arranged front and back and with opposite helix directions are provided on the first synchronizing screw. Both pressurizing plates 511 are connected to their corresponding threaded sections by means of thread fitting, and the first synchronizing screw is rotatably connected to the base 1. The front end of the first synchronizing screw is fixedly connected to the output shaft of the first motor fixedly installed on the base 1. By starting the first motor to drive the first synchronizing screw to rotate, the first synchronizing screw drives the corresponding two pressurizing plates 511 to move synchronously towards each other.

[0036] The gathering unit 5 is used to gather the steel pipes after palletizing; specifically, when the external conveying device conveys the palletized steel pipes into the annular guide rail 21 and aligns the bundling position of the palletized steel pipes with the middle of the annular guide rail 21, the control synchronizer 512 drives the two pressing plates 511 to move towards each other, so that the pressing plates 511 drive the two transmission plates 52 to move towards each other through the pressing springs 513. The transmission plates 52 move to the lower horizontal section of the honeycomb-shaped, i.e., hexagonal arrangement of the steel pipe pallets and contact it. The two transmission plates 52 drive the gathering plate 53 to move synchronously and press against the inclined surface on the lower side of the hexagon. And as the two pressing plates 511 move, the pressing springs 513 are compressed. Then, under the action of the pressing springs 513, the two front and rear arranged transmission plates 52 and the gathering plate 53 can gather the palletized steel pipes towards each other, and the packing mechanism 22 presses down on the upper side of the hexagon, thereby ensuring that the steel pipes are tightly gathered together and further ensuring the bundling quality of the palletized steel pipes. When the bundling of the steel pipes is completed, the control synchronizer 512 finally drives the transmission plates 52 and the gathering plate 53 to return to the initial position in the direction away from each other through the two pressing plates 511.

[0037] Refer to Figure 1 , Figure 2 , Figure 3 and Figure 6 , the tensioning unit 3 includes arc-shaped mounting plates 31 fixedly installed on the left and right sides of the annular guide rail 21 through a plurality of connecting blocks. The inner arc surface of the arc-shaped mounting plates 31 is provided with tensioning rods 33 through a plurality of arc-shaped and evenly arranged elastic connection groups 32. The opposite sides of the two tensioning rods 33 arranged left and right are in contact with each other and are both set as frustum structures. The tensioning rods 33 are provided with centering and limiting groups 34. Linkage groups 35 are installed on the opposite sides of the two arc-shaped mounting plates 31. The linkage groups 35 cooperate with the tensioning rods 33 to drive the centering and limiting groups 34 to arrange the steel belt and the annular guide rail 21 to be centered left and right.

[0038] The tensioning unit 3 is used to keep the steel belt in a straight state; specifically, when the packing mechanism 22 controls the end of the steel belt to be closely attached to the steel pipes after palletizing, during this process, the part of the steel belt close to the packing mechanism 22 first moves towards the direction close to the steel pipes after palletizing and moves out of the annular guide rail 21. Along with the packing mechanism 22 driving the end of the steel belt to move downward, the steel belt gradually moves out of the annular guide rail 21. The steel belt can sequentially fit on the two tensioning rods 33 arranged left and right from top to bottom. Under the action of the frustum structures of the two tensioning rods 33, the opposite sides of the two tensioning rods 33 and the steel belt are centered left and right, and then the steel belt and the annular guide rail 21 are centered left and right. As the packing mechanism 22 tightens the steel belt, the steel belt is in a straight state under the action of the two tensioning rods 33 on the left and right, thereby preventing the steel belt from being in a bent and loose state and preventing the steel belt from deflecting or derailing along the axial direction of the steel pipe. The linkage group 35 is started to drive the centering and limiting group 34 through the tensioning rod 33 to perform secondary centering alignment on the steel belt, further ensuring that the steel belt is always centered left and right with the annular guide rail 21, making the bundling position of the steel belt and the palletized steel pipes accurately aligned, and further preventing the steel belt from deflecting or derailing along the axial direction of the steel pipe, and ensuring the packing efficiency of the palletized steel pipes.

[0039] When the packing mechanism 22 tightly attaches the end of the steel belt to the steel pipes after palletizing and tightens the steel belt, the control linkage group 35 is restored to the initial position. The steel belt can sequentially cooperate with the frustum structures of the two tensioning rods 33 arranged left and right from top to bottom, and drive the two tensioning rods 33 to move away from each other, so that the steel belt disengages from between the two tensioning rods 33, enabling the packing mechanism 22 to complete operations such as tightening, buckling, and cutting the steel belt.

[0040] Refer to Figure 1 、 Figure 2 and Figure 3 As shown in

[0041] Refer to Figure 1 、 Figure 2 and Figure 3, the linkage group 35 includes an arc-shaped electric slider assembly 351 mounted on the arc-shaped mounting plate 31. An arc-shaped plate 352 is mounted on the side of the arc-shaped electric slider assembly 351 away from the arc-shaped mounting plate 31. A plurality of linkage wedge blocks 353 are arranged on the side of the arc-shaped plate 352 away from the arc-shaped mounting plate 31. The distribution positions of the linkage wedge blocks 353 correspond one by one to the mounting positions of the tension rods 33. The opposite sides of the left and right tension rods 33 are both set to be hemispherical structures and are in inclined contact with the corresponding linkage wedge blocks 353. The linkage wedge blocks 353 are fixedly connected to the corresponding arc-shaped plates 352 through L-shaped connecting rods 354; a plurality of arc-shaped synchronous connecting rods 355 are fixedly installed on the opposite sides of the left and right arc-shaped plates 352 together, and the synchronous connecting rods 355 are located outside the arc-shaped mounting plate 31.

[0042] Refer to Figure 3 , on the opposite sides of the left and right tension rods 33 arranged left and right, circumferentially distributed slots 331 are provided, and the slots 331 are used to insert the ends of the left and right tension rods 33 arranged left and right together.

[0043] It should be noted that the arc-shaped electric slider assembly 351 includes an arc-shaped guide rail and a plurality of electric sliders evenly arranged in an arc. The arc-shaped guide rail is fixedly installed on the corresponding arc-shaped mounting plate 31, and the electric sliders are fixedly connected to the corresponding arc-shaped plates 352. By starting the electric sliders, the corresponding arc-shaped plates 352 are driven to move along the arc track of the arc-shaped guide rail.

[0044] The linkage group 35 and the tension rods 33 cooperate to drive the centering and limiting group 34 to make the steel belt and the annular guide rail 21 centered left and right; specifically, when the steel belt is successively attached to the left and right tension rods 33 from top to bottom, the electric sliders drive the arc-shaped plates 352 to move downward along the arc track of the arc-shaped guide rail. Under the action of the synchronous connecting rods 355, it is ensured that the left and right arc-shaped plates 352 can move synchronously. The arc-shaped plates 352 drive the linkage wedge blocks 353 to move through the L-shaped connecting rods 354. The inclined surfaces of the linkage wedge blocks 353 cooperate with the hemispherical structures of the corresponding tension rods 33 to drive the left and right tension rods 33 to move towards each other, and the tension rods 33 compress the corresponding return springs 322. Under the action of the slots 331, the ends of the left and right tension rods 33 can be inserted together. The left and right tension rods 33 drive the corresponding centering and limiting group 34 to perform secondary centering alignment on the steel belt, further ensuring that the steel belt is always centered left and right with the annular guide rail 21, and making the bundling position of the steel belt and the stacked steel pipes accurately aligned.

[0045] When the packing mechanism 22 presses the end of the steel belt tightly against the steel pipes after palletizing and tightens the steel belt, the control arc electric slider assembly 351 drives the linkage wedge block 353 to move to the initial position. Under the action of the corresponding return springs 322, the left and right tension rods 33 move away from each other to the initial position, so that the steel belt fits on the frustum structures of the left and right tension rods 33 at this time. When the packing mechanism 22 tightens the steel belt, the steel belt can first cooperate with the frustum structures of the left and right tension rods 33 on the upper side, and drive the left and right tension rods 33 on the upper side to move away from each other, so that the steel belt disengages from between the left and right tension rods 33 on the upper side. As the packing mechanism 22 tightens the steel belt, the steel belt can still be in a straightened state under the action of the remaining left and right tension rods 33 and gradually disengages from between the corresponding two tension rods 33 from top to bottom.

[0046] Refer to Figure 2 and Figure 3 The centering and limiting group 34 includes centering limit plates 341 slidably sleeved on the tension rods 33. A plurality of top extension springs 342 are circumferentially and uniformly arranged between the centering limit plates 341 and the tension rods 33.

[0047] The centering and limiting group 34 is used to always center and align the steel belt and the annular guide rail 21 left and right; specifically, when the left and right tension rods 33 move towards each other and their ends are inserted together, the two left and right arranged tension rods 33 drive the corresponding two centering limit plates 341 to move towards each other, so that the two centering limit plates 341 are closely attached to the left and right sides of the steel belt. As the two tension rods 33 move towards each other, the two centering limit plates 341 perform secondary centering and alignment on the steel belt under the action of their corresponding top extension springs 342, further ensuring that the steel belt and the annular guide rail 21 are always centered and aligned left and right, so that the bundling position of the steel belt and the palletized steel pipes is accurately aligned, thereby further ensuring the packing efficiency of the palletized steel pipes. When the left and right tension rods 33 move away from each other to the initial position under the action of the corresponding return springs 322, the tension rods 33 drive the corresponding centering limit plates 341 to move to the initial position through the top extension springs 342.

[0048] Refer to Figure 1 、 Figure 4 、 Figure 5 and Figure 6, the flattening unit 4 includes two synchronizing groups 41 symmetrically arranged front and back and mounted on the base 1. Two elastic pressing rods 42 symmetrically arranged left and right are mounted on the synchronizing group 41. The upper ends of the elastic pressing rods 42 are hinged with a flattening plate 43. The synchronizing group 41 is used to drive the flattening plate 43 to flatten the steel belt along the lower contour of the hexagon from the middle to both sides through the elastic pressing rods 42, so that the tension received by the steel belt is evenly distributed; initially, the opposite sides of the two flattening plates 43 arranged left and right are located on the left and right sides of the steel belt, and thus will not interfere with the steel belt moving out of the annular guide rail 21.

[0049] The flattening unit 4 is used to make the steel belt closely adhere to the lower contour of the hexagon; specifically, when the packing mechanism 22 tightens the steel belt and the steel belt is initially attached to the lower side of the stacked steel pipes, control the synchronizing group 41 to drive the two elastic pressing rods 42 arranged left and right to gradually approach each other, so that the opposite sides of the two flattening plates 43 arranged left and right come into contact. Then control the two synchronizing groups 41 to drive the two flattening plates 43 arranged front and back to move away from each other through the elastic pressing rods 42. At the same time, the synchronizing group 41 drives the flattening plate 43 to elastically adhere to the steel belt corresponding to the middle part of the lower side of the honeycomb-shaped (i.e., hexagonally arranged) stacked steel pipes through the elastic pressing rod 42. Thus, when the two flattening plates 43 arranged front and back move away from each other synchronously, the front and back two flattening plates 43 pull the steel belt corresponding to the horizontal plane of the lower side of the hexagon away from each other, so that the tension received by the steel belt under the action of the two flattening plates 43 is evenly distributed. When the flattening plate 43 moves to the inclined plane of the lower side of the hexagon, the flattening plate 43 flips under the hinged action of it and the elastic pressing rod 42, and the transmission plate 52 and the gathering plate 53 gather the stacked steel pipes closer to each other. As the front and back two flattening plates 43 elastically adhere to the steel belt corresponding to the lower contour of the hexagon and move away from each other synchronously, the front and back two flattening plates 43 flatten the steel belt along the lower contour of the hexagon from the middle to both sides. During the process of tightening the steel belt, the tension received by the steel belt corresponding to the lower contour is evenly distributed, thereby preventing the problem of the steel belt being too loose or too tight after bundling, ensuring the bundling quality of the stacked steel pipes. When the bundling of the stacked steel pipes is completed, control the synchronizing group 41 to drive the flattening plate 43 to return to the initial position.

[0050] Refer to Figure 4 、 Figure 5 and Figure 6, a square groove is formed in the upper side of the base 1 corresponding to the position of the annular guide rail 21. The synchronization group 41 includes a synchronization plate 411. The corresponding synchronization plates 411 of the two synchronization groups 41 are both slidably installed in the square groove in the front and rear directions. A second synchronization member 412 is jointly installed between the two synchronization plates 411 and the base 1. The upper end of the synchronization plate 411 is installed with a lifting plate 416 through a plurality of multi-stage telescopic rods 415 arranged evenly from left to right. The multi-stage telescopic rod 415 is an elastic telescopic structure. Two symmetrically arranged synchronization blocks 413 are slidably installed on the upper side of the lifting plate 416 through a third synchronization member 414 in the left and right directions, and the upper ends of the synchronization blocks 413 are fixedly connected to the corresponding elastic pressing rods 42 respectively.

[0051] Refer to Figure 4 , Figure 5 and Figure 6 , circular rods 417 are fixedly installed at both the left and right ends of the lifting plate 416. Matching plates 11 are fixedly installed on the upper side of the base 1 corresponding to the positions of the circular rods 417. The upper ends of the opposite sides of the two matching plates 11 arranged in the front and rear directions are both provided with inclined surfaces that match the corresponding circular rods 417.

[0052] It should be noted that the second synchronization member 412 includes a second synchronization screw. Two thread segments arranged in the front and rear directions and with opposite helix directions are formed on the second synchronization screw. The two synchronization plates 411 are both connected to the corresponding thread segments on the second synchronization screw through threaded cooperation, and the second synchronization screw is rotatably connected to the base 1. The front end of the second synchronization screw is fixedly connected to the output shaft of the second motor fixedly installed on the base 1. By starting the second motor to drive the second synchronization screw to rotate, the second synchronization screw drives the two synchronization plates 411 to move synchronously inward and outward.

[0053] It should be noted that the third synchronization member 414 uses an electric slider assembly to drive the two synchronization blocks 413 to move synchronously. The electric slider assembly includes a slide rail and two electric sliders. The slide rail is fixedly connected to the corresponding synchronization plate 411, and the two synchronization blocks 413 are fixedly installed on the corresponding electric sliders. By starting the two electric sliders, the two synchronization blocks 413 are driven to move synchronously inward and outward.

[0054] The synchronization group 41 is used to drive the elastic pressing rods 42 to move towards each other synchronously. The synchronization group 41 is also used to drive the flat pulling plate 43 to closely adhere to the lower side of the stacked steel pipes through the elastic pressing rods 42. Specifically, when the packing mechanism 22 tightens the steel belt and the steel belt is initially attached to the lower side of the stacked steel pipes, the synchronization member three 414 is controlled to drive the two elastic pressing rods 42 and the flat pulling plate 43 arranged left and right to move towards each other through the synchronization block 413, so that the opposite sides of the two flat pulling plates 43 arranged left and right are in contact. Then, the synchronization member two 412 is controlled to drive the two synchronization plates 411 to move away from each other. The synchronization plates 411 drive the two lifting plates 416 to move away from each other through the multi-stage telescopic rods 415. Under the combined action of the round rod 417 and the inclined surface of the mating plate 11, the lifting plate 416 moves upward and stretches the elastic telescopic end of the multi-stage telescopic rod 415. The lifting plate 416 finally drives the flat pulling plate 43 to closely adhere to the lower side of the steel belt through the synchronization block 413, and the telescopic end of the elastic pressing rod 42 can be compressed, so that the steel belt closely adheres to the steel belt corresponding to the lower horizontal plane of the hexagon. As the two lifting plates 416 continue to move away from each other, the lifting plate 416 always moves upward under the combined action of the round rod 417 and the inclined surface of the mating plate 11. Thus, when the flat pulling plate 43 moves to the position corresponding to the lower inclined surface of the hexagon, at this time, the telescopic end of the elastic pressing rod 42 can still be compressed, thereby ensuring that the steel belt closely adheres to the lower contour of the hexagon.

[0055] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative way of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A steel belt guiding strapping machine, comprising a base, on which a strapping unit is installed. The strapping unit includes an annular guide rail and a strapping mechanism, and is characterized in that, Two tensioning units are symmetrically arranged front and back on the annular guide rail. A flattening unit is installed on the base corresponding to the position of the annular guide rail. Two gathering units are symmetrically arranged left and right on the base. The gathering units are used to gather and stack steel pipes in a hexagonal shape. The tensioning unit includes arc-shaped mounting plates fixedly installed on the left and right sides of the annular guide rail through a plurality of connecting blocks. The inner arc surface of the arc-shaped mounting plate is provided with tensioning rods through a plurality of elastic connection groups arranged in an arc shape and evenly distributed. The opposite sides of the two tensioning rods arranged left and right are in contact with each other and are both set as frustum structures. A centering and limiting group is installed on the tensioning rods. Linkage groups are installed on the opposite sides of the two arc-shaped mounting plates. The linkage groups and the tensioning rods cooperate to drive the centering and limiting group to center the steel belt and the annular guide rail left and right. The flattening unit includes two synchronizing groups symmetrically arranged front and back on the base. Two elastic pressing rods symmetrically arranged left and right are installed on the synchronizing groups. The upper ends of the elastic pressing rods are hinged with flattening plates. The synchronizing groups are used to drive the flattening plates to flatten the steel belt along the lower contour of the hexagon from the middle to both sides through the elastic pressing rods, so that the tension received by the steel belt is evenly distributed.

2. The steel belt guiding strapping machine according to claim 1, characterized in that, The gathering unit includes a pressurizing group installed on the base. Two L-shaped transmission plates symmetrically arranged front and back are installed on the pressurizing group. Gathering plates are fixedly installed on the opposite sides of the upper ends of the horizontal sections of the two transmission plates. The upper ends of the two gathering plates are inclined in the direction away from each other.

3. The steel belt guiding strapping machine according to claim 2, characterized in that, The pressurizing group includes two pressurizing plates symmetrically arranged front and back and slidably installed on the base. A first synchronizing member is connected between the two pressurizing plates and the base. The upper end of the pressurizing plate is slidably connected to the vertical end of its corresponding transmission plate front and back. A pressurizing spring is connected between the pressurizing plate and the transmission plate.

4. The steel belt guiding strapping machine according to claim 1, characterized in that, The elastic connection group includes a connecting plate fixedly installed on the arc-shaped mounting plate. The tensioning rod slides through the corresponding connecting plate left and right. A return spring is connected between the tensioning rod and its corresponding connecting plate.

5. The steel belt guiding strapping machine according to claim 1, characterized in that, The linkage group includes an arc-shaped electric slider assembly installed on the arc-shaped mounting plate. An arc-shaped plate is installed on the side of the arc-shaped electric slider assembly away from the arc-shaped mounting plate. A plurality of linkage wedge blocks are arranged on the side of the arc-shaped plate away from the arc-shaped mounting plate. The distribution positions of the linkage wedge blocks correspond one by one to the installation positions of the tensioning rods. The opposite sides of the two tensioning rods arranged left and right are both set as hemispherical structures and are in contact with the inclined surfaces of their corresponding linkage wedge blocks. The linkage wedge blocks are fixedly connected to the corresponding arc-shaped plates through L-shaped connecting rods.

6. The steel belt guiding strapping machine according to claim 5, characterized in that, A plurality of arc-shaped synchronizing connecting rods are fixedly installed on the opposite sides of the two arc-shaped plates on the left and right, and the synchronizing connecting rods are located outside the arc-shaped mounting plate.

7. The steel belt guiding strapping machine according to claim 1, characterized in that, The centering and limiting group includes a centering and limiting plate slidably sleeved on the tensioning rod. A plurality of top extension springs are circumferentially and evenly arranged between the centering and limiting plate and the tensioning rod.

8. The steel belt guiding strapping machine according to claim 1, characterized in that, Circumferentially distributed slots are opened on the opposite sides of the two tensioning rods arranged left and right. The slots are used to insert the ends of the two tensioning rods arranged left and right together.

9. The steel belt guiding strapping machine according to claim 1, characterized in that, A square groove is formed in the upper side of the base corresponding to the position of the annular guide rail. The synchronous group includes a synchronous plate. The synchronous plates corresponding to the two synchronous groups are both slidably installed in the square groove in the front-back direction. A second synchronous member is jointly installed between the two synchronous plates and the base. The upper end of the synchronous plate is provided with a lifting plate through a plurality of multi-stage telescopic rods arranged uniformly from left to right. The multi-stage telescopic rod is an elastic telescopic structure. Two symmetrically arranged synchronous blocks are slidably installed on the upper side of the lifting plate through a third synchronous member, and the upper ends of the synchronous blocks are fixedly connected to their corresponding elastic pressing rods respectively.

10. The steel belt guiding strapping machine according to claim 9, characterized in that, Round rods are fixedly installed at both the left and right ends of the lifting plate. Matching plates are fixedly installed on the upper side of the base corresponding to the positions of the round rods. The upper ends of the opposite sides of the two matching plates arranged in the front-back direction are both provided with inclined surfaces matching the corresponding round rods.

Images