Adjustable horizontal rack

Abstract

The adjustable horizontal rack comprises a rack body, a lower roller and an upper roller are rotationally erected on the rack body, the distance between the lower roller and the upper roller which are arranged side by side can be adjusted through an adjusting mechanism, and each of the lower roller and the upper roller comprises a rotating shaft and a fastener; a to-be-pressed steel pipe is placed on a lower adjusting rolling wheel and erected on two second annular grooves, further, two first annular grooves abut against the steel pipe, an upper roller and a lower roller are driven to rotate, the first annular grooves and the second annular grooves rotate and press the steel pipe, the steel pipe is continuously conveyed forwards, and the steel pipe is conveyed forwards. And the round quarter arc-shaped groove and the slope surface are adaptive to steel pipes with different sizes and specifications. And the cross section of a quarter arc provides a better contact area to adapt to steel pipes with different diameters. The slope surface can be beneficial to adjusting pressure distribution and preventing deformation of the steel pipe.

Description

TECHNICAL FIELD

[0001] The utility model relates to steel pipe processing technical field, concretely relates to an adjustable horizontal rack. BACKGROUND

[0002] The adjustable horizontal rack is a core component in the roll forming machine for controlling the transverse size of the profile, which is composed of a plurality of rollers arranged symmetrically up and down, and the roller surface is processed with grooves matching the target profile. The sizing horizontal roller frame is equipped with hydraulic or screw lifting components, which are used to adjust the roller spacing and pressure. However, the existing rollers are disassembled from the horizontal rack and new adaptive rollers are installed, which not only requires a lot of manpower, but also has high operation difficulty and is prone to inaccurate installation and other problems. In addition, before and after replacing the rollers, the equipment needs to be debugged and calibrated to ensure that the new rollers can work normally after installation, which further increases the time and effort required to replace the rollers. Therefore, there is an urgent need for an adjustable horizontal rack that can complete the pressing of steel pipes of different size specifications without replacing the rollers. SUMMARY

[0003] The main purpose of the utility model is to provide an adjustable horizontal rack to solve the problem of frequent replacement of rollers in the prior art, which causes interruption of the production process and a lot of time wasted on equipment adjustment.

[0004] In order to achieve the above purpose, the utility model provides an adjustable horizontal rack, which comprises a rack, a lower roller and an upper roller rotatably arranged on the rack, and the lower roller and the upper roller arranged side by side can adjust the distance between them through an adjusting mechanism, and the lower roller and the upper roller each comprise a rotating shaft and a fastener.

[0005] The upper roller further comprises an upper fixed roller and an upper adjusting roller, the upper fixed roller is fixedly sleeved on the rotating shaft, the upper adjusting roller is fixedly arranged on the rotating shaft through the fastener, and the upper fixed roller and the upper adjusting roller are each provided with a first annular groove on the circumferential wall opposite to each other, and the cross section of the first annular groove is a circular quarter arc groove.

[0006] The lower roller further comprises a lower fixed roller and a lower adjusting roller, the lower fixed roller is fixedly sleeved on the rotating shaft, the lower adjusting roller is fixedly arranged on the rotating shaft through the fastener, and the lower fixed roller and the lower adjusting roller are each provided with a second annular groove on the circumferential wall opposite to each other, and the cross section of the second annular groove is a slope surface.

[0007] Preferably, the fastener comprises a first ring body and a second ring body, the inner ring of the first ring body is coaxially fixedly arranged with the second ring body, and a plurality of first threaded holes are arranged on one side of the circumferential wall, and each first threaded hole is screwed with a bolt.

[0008] The rotating shaft has a plurality of second threaded holes circumferentially arranged on the side of the upper adjusting roller away from the first ring groove and the side of the lower adjusting roller away from the second ring groove, the bolt is screwed with the second threaded hole, and the first threaded hole corresponds to the second threaded hole one by one.

[0009] The first ring body is clamped at the annular protruding block at one end and abuts against the side of the upper adjusting roller away from the first ring groove or the side of the lower adjusting roller away from the second ring groove at the other end.

[0010] Preferably, the fastener further comprises a plurality of grommets, the grommets are circumferentially provided with a plurality of through holes, the plurality of through holes correspond to the plurality of first threaded holes one by one, the bolt passes through the first threaded hole, the through hole and the second threaded hole in sequence, the plurality of grommets are sleeved on the rotating shaft and located between the upper adjusting roller or the lower adjusting roller and the annular protruding block, and the first ring body abuts against the grommet.

[0011] Preferably, a side wall of the first ring body is provided with a plurality of embedded holes, the plurality of embedded holes correspond to the first threaded holes one by one and are coaxially and communicatively arranged.

[0012] Preferably, the bolt is a straight bolt or a cross bolt.

[0013] Preferably, the rotating shaft is fixedly provided with a shaft key in the axial direction thereof, and the inner rings of the upper adjusting roller and the lower adjusting roller are each provided with a sliding groove in the axial direction thereof, and the shaft key is slidingly inserted into the sliding groove.

[0014] Preferably, the adjusting mechanism comprises a connecting shaft, both ends of the connecting shaft are rotatably arranged on the rack, one end of the connecting shaft is connected with the motor, the base of the motor is fixedly connected with the rack, the connecting shaft is fixedly sleeved with two spur gears, the spur gears are engaged with the rack, and the rack is slidingly arranged on the rack in the height direction of the rack.

[0015] Both ends of each rotating shaft are provided with an adjusting seat, the adjusting seat slides along the height of the rack, the adjusting seat has an embedding groove, and the embedding groove is embedded with an embedding block.

[0016] One end of the rack is fixedly connected with the embedding block, and the two racks correspond to the two embedding blocks one by one.

[0017] Preferably, the motor is connected with the connecting shaft through a speed reducer.

[0018] The above scheme has the following beneficial effects:

[0019] The to-be-pressed steel pipe is placed on the lower adjusting roller and is arranged on two second annular grooves. Further, the adjusting mechanism is driven to work. The adjusting mechanism drives the upper roller to move closer to the steel pipe, so that the two first annular grooves abut against the steel pipe. The upper roller and the lower roller are driven to rotate. The first annular groove and the second annular groove rotate and press the steel pipe, so that the steel pipe is continuously conveyed forward. The circular quarter-arc-shaped groove and the slope surface are suitable for steel pipes of different sizes. The cross section of the quarter-arc-shaped groove provides a better contact area and is suitable for steel pipes of different diameters. The slope surface can help to adjust the pressure distribution and prevent the steel pipe from being deformed. The adjusting mechanism drives the rollers to move closer to each other for rapid adjustment and is suitable for different specifications, thereby reducing downtime. BRIEF DESCRIPTION OF DRAWINGS

[0020] The utility model will be further explained in detail in combination with the drawings and specific embodiments.

[0021] Figure 1 is the front view state structure schematic diagram of the utility model;

[0022] Figure 2 is the part three-dimensional structure schematic diagram of the utility model;

[0023] Figure 3 is the three-dimensional structure schematic diagram of the section state of Figure 2

[0024] Figure 4 is the structure schematic diagram of the explosion state of Figure 2

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, rack, 2, upper roller, 21, upper fixed roller, 22, upper adjusting roller, 23, first annular groove,

[0027] 3, lower roller, 31, rotating shaft, 311, shaft key, 312, annular protruding block,

[0028] 32, fastener, 320, first ring body, 321, second ring body, 3201, first threaded hole, 323, grommet, 3231, perforation, 3211, pre-buried hole, 324, bolt,

[0029] 33, lower fixed roller,

[0030] 34, lower adjusting roller, 340, second threaded hole,

[0031] 35, second annular groove,

[0032] 4, adjusting mechanism, 41, connecting shaft, 42, motor, 43, spur gear, 44, rack, 45, adjustment seat, 451, embedded groove, 46, embedded block, 5, speed reducer. DETAILED DESCRIPTION​​

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Many specific details are set forth in the following description to provide a full understanding of the present invention. However, the present invention may also be implemented in other ways different from those described herein. Those skilled in the art can make similar extensions without departing from the spirit of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below. Example

[0034] like Figures 1-4 As shown, this embodiment provides an adjustable horizontal frame, including a frame 1. A lower roller 3 and an upper roller 2 are rotatably mounted on the frame 1. The lower roller 3 and upper roller 2, arranged side-by-side, have their distance adjustable via an adjustment mechanism 4. Both the lower roller 3 and upper roller 2 include a rotating shaft 31 and a fastener 32. Figure 1 As shown, the upper roller 2 also includes an upper fixed roller 21 and an upper adjusting roller 22. The upper fixed roller 21 is fixedly sleeved on the rotating shaft 31, and the upper adjusting roller 22 is fixedly mounted on the rotating shaft 31 by fasteners 32. Both the upper fixed roller 21 and the upper adjusting roller 22 have a first annular groove 23 on their opposite sidewall circumferences. The cross-section of the first annular groove 23 is a quarter-circular arc groove. The lower roller 3 also includes a lower fixed roller 33 and a lower adjusting roller 34. The lower fixed roller 33 is fixedly sleeved on the rotating shaft 31, and the lower adjusting roller 34 is fixedly mounted on the rotating shaft 31 by fasteners 32. Both the lower fixed roller 33 and the lower adjusting roller have a second annular groove 35 on their opposite sidewall circumferences. The cross-section of the second annular groove 35 is a sloping surface. Figure 1 As shown, the adjusting mechanism 4 includes a connecting shaft 41, with both ends of the connecting shaft 41 rotatably mounted on the frame 1. One end of the connecting shaft 41 is connected to a motor 42, and the base of the motor 42 is fixedly connected to the frame 1. Two spur gears 43 are fixedly sleeved on the connecting shaft 41, and the spur gears 43 mesh with a rack 44. Adjusting seats 45 are installed at both ends of each rotating shaft 31. The adjusting seats can be considered as bearing seats. The adjusting seats 45 slide along the height of the frame 1 and have an embedding groove 451 into which inserts 46 are embedded. One end of the rack 44 is fixedly connected to the insert 46, and the rack slides along the direction of the frame. The two racks 44 correspond one-to-one with the two inserts 46. The motor 42 is connected to the connecting shaft 41 via a reducer 5 as described in the prior art. The drive motor 42 works, and the motor 42 drives the connecting shaft 41 to rotate. The connecting shaft 41 drives the two spur gears 43 on its rod to rotate. The spur gears 43 drive the rack 44 to move up and down. The rack 44 drives the two adjusting seats 45 to rise and fall synchronously through the insert block 46.

[0035] The steel pipe to be pressed is placed on the lower adjusting roller 34 and rests on the two second annular grooves. The adjusting mechanism 4 then operates, causing the upper roller 2 to move closer to the steel pipe, bringing the two first annular grooves 23 into contact with the pipe. This drives the upper roller 2 and lower roller 3 to rotate, causing the first annular grooves 23 and second annular grooves 35 to rotate and press the steel pipe, continuously conveying it forward. The quarter-circle grooves and sloping surfaces adapt to steel pipes of different sizes. The quarter-circle cross-section provides a better contact area, accommodating steel pipes of different diameters. The sloping surface may help adjust the pressure distribution and prevent steel pipe deformation. The adjusting mechanism 4 moves the rollers closer for rapid adjustment, adapting to different specifications and reducing downtime. Figure 1 As shown, it should be noted that the steel pipe to be pressed is a pipe with a long notch, and the steel pipe is formed by bending a blank into a pipe.

[0036] like Figures 2-4 As shown, the fastener 32 includes a first ring 320 and a second ring 321, with the second ring 321 coaxially fixed to the inner ring of the first ring 320. Multiple first threaded holes 3201 are formed on one side of the first ring 320, and each first threaded hole 3201 is threaded with a bolt 324. The rotating shaft 31 has an annular protrusion 312. Multiple second threaded holes 340 are formed on the circumference of the upper adjusting roller 22 (opposite to the first annular groove 23) and the lower adjusting roller 34 (opposite to the second annular groove 35). Bolts 324 are threaded into the second threaded holes 340, and the first threaded holes 3201 and second threaded holes 340 correspond one-to-one. One end of the first ring 320 is engaged with the corner of the second ring 321 at the annular protrusion 312, and the other end of the first ring 320 abuts against the side of the upper adjusting roller 22 opposite to the first annular groove 23 or the side of the lower adjusting roller 34 opposite to the second annular groove 35. When it is necessary to fix the lower adjusting roller 34 or the upper adjusting roller 22 onto the rotating shaft 31, one end of the first ring body 320 and the corner of the second ring body 321 are engaged at the annular protrusion 312. The bolt 324 passes through the first threaded hole 3201 and the second threaded hole 340 in sequence and is screwed to both. This completes the fixing of the lower adjusting roller 34 or the upper adjusting roller 22 onto the rotating shaft 31.

[0037] like Figure 3 , Figure 4As shown, the fastener 32 also includes multiple washers 323. Each washer 323 has multiple through holes 3231 around its circumference, each through hole 3231 corresponding to a multiple first threaded hole 3201. A bolt 324 passes sequentially through the first threaded hole 3201, the through hole 3231, and the second threaded hole 340. The bolt 324 is either a slotted bolt 324 or a Phillips head bolt 324. The multiple washers 323 are fitted onto the rotating shaft 31, and are located between the upper adjusting roller 22 or the lower adjusting roller 34 and the annular protrusion 312. The first ring body 320 abuts against the washers 323. Multiple washers 323 are located between the upper adjusting roller 22 or the lower adjusting roller 34 and the annular protrusion 312. This allows for the use of different numbers of washers 323 depending on the required size of the steel pipe, thus adjusting the distance between the upper adjusting roller 22 and the upper fixed roller 21, or between the lower adjusting roller 34 and the lower fixed roller 33. Multiple pre-embedded holes 3211 are formed around the circumference of the first ring body 320. These holes correspond one-to-one with the first threaded hole 3201, and are coaxially connected. The main purpose of the pre-embedded holes 3211 is to prevent the bolts 324 from being exposed. A key 311 is fixedly installed on the rotating shaft 31 along its axial direction. Sliding grooves are formed on the inner rings of both the upper adjusting roller 22 and the lower adjusting roller 34 along their axial direction. The key 311 is slidably inserted into the sliding grooves, allowing the upper adjusting roller 22 or the lower adjusting roller 34 to move along the axial direction of the rotating shaft 31.

[0038] Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

Claims

1. An adjustable horizontal frame, comprising a frame, on which a lower roller and an upper roller are rotatably mounted, the lower roller and the upper roller arranged side by side being adjustable in distance via an adjustment mechanism, characterized in that, Both the lower roller and the upper roller include a rotating shaft and fasteners; The upper roller also includes an upper fixed roller and an upper adjusting roller. The upper fixed roller is fixedly sleeved on the rotating shaft, and the upper adjusting roller is fixedly mounted on the rotating shaft by the fastener. The upper fixed roller and the upper adjusting roller have a first annular groove on their opposite sidewall circumferences. The cross-section of the first annular groove is a quarter-circular arc groove. The lower roller also includes a lower fixed roller and a lower adjusting roller. The lower fixed roller is fixedly sleeved on the rotating shaft, and the lower adjusting roller is fixedly mounted on the rotating shaft by the fastener. The lower fixed roller and the lower adjusting roller have a second annular groove on their opposite sidewall circumferences, and the cross-section of the second annular groove is a sloping surface.

2. The adjustable horizontal frame according to claim 1, characterized in that, The fastener includes a first ring body and a second ring body. The second ring body is coaxially fixed to the inner ring of the first ring body, and a plurality of first threaded holes are opened on one side of the circumference, and a bolt is threaded into each first threaded hole. The rotating shaft has an annular protrusion. Multiple second threaded holes are opened on the circumference of the side of the upper adjusting roller facing away from the first annular groove and the side of the lower adjusting roller facing away from the second annular groove. The bolt is screwed into the second threaded holes. The first threaded hole and the second threaded hole correspond one-to-one. One end of the first ring body is engaged with the corner of the second ring body at the annular protrusion, and the other end of the first ring body abuts against the side of the upper adjusting roller away from the first annular groove or the side of the lower adjusting roller away from the second annular groove.

3. The adjustable horizontal frame according to claim 2, characterized in that, The fastener also includes multiple washers, each washer having multiple through holes around its circumference. Each of the through holes corresponds to a plurality of the first threaded holes. The bolt passes through the first threaded hole, the through hole, and the second threaded hole in sequence. The multiple washers are sleeved on the rotating shaft and located between the upper adjusting roller or the lower adjusting roller and the annular protrusion. The first ring body abuts against the washers.

4. The adjustable horizontal frame according to claim 2, characterized in that, Multiple pre-embedded holes are formed on one side wall of the first ring body. Each of the pre-embedded holes corresponds to one of the first threaded holes, and the two are coaxially connected.

5. The adjustable horizontal frame according to claim 4, characterized in that, The bolts used are slotted bolts or Phillips head bolts.

6. The adjustable horizontal frame according to claim 1, characterized in that, The rotating shaft is fixedly provided with a key along its axial direction, and the inner rings of the upper and lower adjusting rollers are provided with sliding grooves along their axial direction, with the key slidably inserted into the sliding grooves.

7. The adjustable horizontal frame according to any one of claims 1-6, characterized in that, The adjustment mechanism includes a connecting shaft, both ends of which are rotatably mounted on the frame, and one end is connected to a motor. The base of the motor is fixedly connected to the frame. Two spur gears are fixedly sleeved on the connecting shaft, and each spur gear meshes with a rack. The vertically mounted rack is slidably mounted on the frame. Each shaft has an adjustment seat installed at both ends, the adjustment seat slides along the height of the frame and has an embedding groove into which an insert is embedded; One end of the rack is fixedly connected to the insert, and the two racks correspond one-to-one with the two inserts.

8. The adjustable horizontal frame according to claim 7, characterized in that, The motor is connected to the connecting shaft via a speed reducer.

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