Coiled material uncoiling device

Abstract

The utility model discloses a coiled material uncoiling device which comprises a material frame mechanism, a feeding mechanism, a limiting mechanism and a main shaft mechanism, the feeding mechanism is connected with the material frame mechanism in a sliding mode, the limiting mechanism and the main shaft mechanism are fixedly connected with the material frame mechanism, and the limiting mechanism comprises a material pressing arm assembly and limiting roller assemblies symmetrically arranged on the two sides of the material frame mechanism. The limiting roller assembly comprises a limiting roller shaft, a first limiting roller, a second limiting roller, a first driving unit used for driving the first limiting roller to rotate in the circumferential direction of the limiting roller shaft, and a second driving unit used for driving the first limiting roller to move in the axial direction of the limiting roller shaft. The limiting mechanism comprises a third driving unit used for driving the second limiting roller to move in the axial direction of the limiting roller shaft. The material pressing arm assembly comprises a material pressing roller and a fourth driving unit used for driving the material pressing roller to rotate. According to the coiled material uncoiling device, full-automatic feeding of coiled materials and automatic adjustment of the positions of the first limiting roller and the second limiting roller are achieved, working efficiency is effectively improved, and potential safety hazards of manual operation are reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of coil material processing equipment, and in particular relates to an uncoiling device for steel and aluminum coil materials. Background Art

[0002] In the stamping industry, in order to save space and time costs, thin plate products are usually made into coils and packaged, and then the coils are unrolled and leveled in the subsequent processing. In the unrolling process of the coil, the position of the coil is usually fixed by a limit roller after the coil is loaded to prevent the coil from deviating after unrolling. However, due to the low degree of automation of ordinary unwinding mechanisms, it is often necessary to manually remove the limit roller before loading, and then install and fix the limit roller after the coil is loaded. This undoubtedly makes the unwinding operation more cumbersome, and the manual operation time is longer than that of automated production, which reduces work efficiency; it also increases the safety hazards of operators. Utility Model Content

[0003] In view of this, in order to overcome the defects of the prior art, the purpose of the utility model is to provide a coil unwinding device, which can automatically load materials and automatically adjust the position of the limiting roller according to the coil parameters, avoiding manual operation and reducing the risk of manual exposure to the outside of the machine; improving work efficiency.

[0004] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0005] A coil unwinding device comprises a material rack mechanism, a feeding mechanism, a limiting mechanism and a spindle mechanism, wherein the feeding mechanism is slidably connected to the material rack mechanism, the limiting mechanism and the spindle mechanism are both fixedly connected to the material rack mechanism, the feeding mechanism is used to automatically transfer the coil to the spindle mechanism, the limiting mechanism comprises a pressing arm assembly and limiting roller assemblies symmetrically arranged on both sides of the material rack mechanism, the pressing arm assembly is arranged above one of the limiting roller assemblies, each of the limiting roller assemblies comprises a limiting roller shaft, a first limiting roller and a second limiting roller arranged on the limiting roller shaft, a first driving unit for driving the first limiting roller to rotate along the circumferential direction of the limiting roller shaft, and a first driving unit for driving the first limiting roller A second driving unit moves axially along the axis of the limiting roller, and the limiting mechanism also includes a third driving unit for driving the second limiting roller to move axially along the axis of the limiting roller. The first limiting roller is close to the feeding mechanism. When the coil is located on the spindle mechanism, the first limiting roller is located at one end of the coil close to the feeding mechanism, and the second limiting roller is located at one end of the coil away from the feeding mechanism. The pressing arm assembly includes a pressing roller and a fourth driving unit for driving the pressing roller to rotate. During the unwinding process of the coil on the spindle mechanism, the fourth driving unit is used to drive the pressing roller to rotate relative to the coil so that the pressing roller abuts against the outer surface of the coil. The first limiting roller and the second limiting roller are used for limiting the left and right sides of the coil after it is fed to the spindle mechanism to prevent the coil from running off during the feeding process, and the first limiting roller and the second limiting roller can automatically adjust the limiting position according to the width of the coil. Furthermore, the first limiting roller can rotate under the driving action of the first driving unit, ensuring that the first limiting roller can rotate and rise when the coil is loaded to avoid the coil and avoid collision. The fourth driving unit drives the pressing roller to rotate, so that when the coil rotates on the spindle mechanism, the pressing roller also actively rotates relative to the coil. The setting of the fourth driving unit can avoid the resistance generated by the excessive coil causing the pressing roller to be unable to rotate accordingly, thereby scratching the coil and the pressing roller.

[0006] According to the preferred implementation aspects of the utility model, the limiting mechanism also includes a limiting bracket fixedly arranged on the top of the material rack mechanism, the limiting bracket includes a fixed plate and two mutually parallel limiting plates fixedly arranged on the top surface of the fixed plate, the limiting plate is perpendicular to the limiting roller shaft, the limiting roller shaft passes through the thickness direction of the two limiting plates, and one of the limiting plates is located at one end of the limiting roller shaft.

[0007] According to the preferred implementation aspects of the utility model, each of the limiting roller assemblies includes a first slide, a second slide and a first connecting rod, the first slide and the second slide can be slidably mounted on the outer circumference of the limiting roller shaft, the first slide is connected to the first limiting roller, and the second slide is connected to the second limiting roller; one end of the first connecting rod is fixedly connected to one end of the limiting roller shaft, the other end of the first connecting rod is fixedly connected to one end of the first driving unit, the other end of the first driving unit is fixedly connected to the fixed plate, one end of the second driving unit is fixedly connected to the first slide, and the other end of the second driving unit is fixedly connected to the limiting roller shaft.

[0008] According to a preferred implementation aspect of the utility model, the limiting mechanism further includes a connecting plate, the connecting plate is parallel to the limiting plate, the two limiting roller shafts both penetrate the thickness direction of the connecting plate and the two ends of the connecting plate are respectively fixedly connected to the two second slide seats; one end of the third driving unit is fixedly connected to the connecting plate, and the other end of the third driving unit is fixedly connected to the limiting bracket. The setting of the connecting plate makes the movements of the two second limiting rollers on the two limiting roller shafts synchronized, thereby making the positions of the two second limiting rollers synchronized.

[0009] According to a preferred embodiment of the present invention, the outer wall surface of the press roller is provided with a groove along its circumference, and the length of the groove is less than the length of the press roller; the press arm assembly also includes a rotating shaft, a press bracket and a fifth drive unit, the fifth drive unit is used to drive the rotating shaft to rotate, the rotating shaft passes through the thickness direction of the limit plate and the limit bracket, the rotating shaft is parallel to the limit roller shaft, one end of the rotating shaft is rotatably connected to the limit plate, the other end of the rotating shaft is fixedly connected to the press bracket, and the press roller is connected to the end of the press bracket away from the rotating shaft. The groove on the press roller is provided so that when the coil is unrolled and packaged, there is a gap between the press roller and the surface of the coil, thereby preventing the coil from scratching and wearing the press roller.

[0010] According to the preferred implementation aspects of the utility model, the press arm assembly further comprises a second connecting rod, the second connecting rod is fixedly connected to one end of the rotating shaft away from the press bracket, one end of the fifth driving unit is fixedly connected to one end of the second connecting rod, and the other end of the fifth driving unit is fixedly connected to the limit plate; a synchronous wheel is arranged at one end of the rotating shaft connected to the limit plate, an encoder is fixedly arranged on one of the two limit plates away from the press bracket, and the encoder is transmission-connected to the synchronous wheel. The encoder is arranged to detect the rotational position of the rotating shaft and the press bracket.

[0011] According to the preferred implementation aspects of the utility model, the spindle mechanism includes a core shaft, a first driver for driving the core shaft to rotate, a first transmission shaft sleeved on the outer circumference of the core shaft, a second driver for driving the first transmission shaft to rotate, a core shaft flange cover arranged at an end of the core shaft away from the first driver, a sliding sleeve sleeved on the outer circumference of the first transmission shaft, a wedge block connected to the sliding sleeve, and a tile fixedly connected to the wedge block, an inclined wedge mechanism is formed between the sliding sleeve and the wedge block, a limiting disk is arranged between one end of the first transmission shaft close to the core shaft flange cover and the core shaft flange cover, the limiting disk is fixedly sleeved on the outer circumference of the end of the core shaft close to the core shaft flange cover, a limiting block is fixedly arranged on the inner wall of the tile, and the end of the limiting block away from the tile is clamped with the limiting disk.

[0012] According to a preferred implementation aspect of the utility model, a plurality of the tiles are evenly spaced, and the plurality of the tiles are circumferentially arranged around the first transmission shaft. The length direction of the tiles is parallel to the length direction of the core shaft and perpendicular to the height direction of the material rack mechanism. The plurality of tiles are enclosed to form a main shaft body, and the main shaft body is used for the coil to be sleeved; the number of the limit blocks is equal to the number of the tiles, and a plurality of the bevel wedge mechanisms are spaced, and adjacent two sliding sleeves of two adjacent bevel wedge mechanisms are fixedly connected, and one of the sliding sleeves close to the core shaft flange cover is fixedly connected to the core shaft flange cover; the number of the wedge blocks in each of the bevel wedge mechanisms is equal to the number of the tiles.

[0013] According to a preferred implementation aspect of the utility model, the material rack mechanism includes a slide rail and a material rack body fixedly connected to one end of the slide rail, the height direction of the material rack body is perpendicular to the length direction of the slide rail, a sleeve is fixedly arranged on the material rack body, the sleeve passes through the thickness direction of the material rack body, the length direction of the sleeve is parallel to the length direction of the first transmission shaft, the first transmission shaft passes through the length direction of the sleeve and is rotatably connected to the sleeve; the loading mechanism includes a loading trolley and a material blocking rod fixedly arranged on both sides of the loading trolley, the slide rail is used for the sliding of the loading trolley; the loading trolley is used to place the coil to be loaded and adjust the height of the coil from the ground so that the axis center line of the coil coincides with the axis center line of the spindle body.

[0014] According to the preferred implementation of the utility model, it also includes a tail material rack, the tail material rack is located on one side of the limiting mechanism, one end of the tail material rack is connected to the pressing bracket, and the other end of the tail material rack is fixedly connected to the bottom of the rack body, and the tail material rack is provided with a first sensor, the first sensor is used to detect the height of the coil located on the spindle mechanism from the ground. The setting of the first sensor can detect the bottom position of the coil on the spindle mechanism in real time, and control the feeding speed of the coil according to its position height.

[0015] Compared with the prior art, the advantages of the utility model are: a coil unwinding device of the utility model realizes fully automatic loading of coils and automatic adjustment of the positions of the first limiting roller and the second limiting roller by setting a material rack mechanism, a feeding mechanism, a limiting mechanism and a main shaft mechanism. No manual installation and disassembly are required, unwinding is simpler and faster, and the safety hazard of manual exposure to the outside of the machine is reduced, while the work efficiency can be effectively improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 It is a schematic diagram of the three-dimensional structure of the coil unwinding device in the embodiment of the utility model;

[0018] Figure 2 It is a three-dimensional structural schematic diagram of the limiting mechanism in the embodiment of the utility model;

[0019] Figure 3 This is a schematic diagram of the main structure of the first slide and the first limiting roller in the embodiment of the utility model;

[0020] Figure 4 It is a three-dimensional structural diagram of the hidden components of the main shaft mechanism in the embodiment of the utility model;

[0021] Figure 5 This is a schematic cross-sectional view of the main shaft mechanism in the embodiment of the utility model;

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the material rack body in the embodiment of the utility model;

[0023] In the accompanying drawings, the reference numerals are:

[0024] Material rack mechanism-1, slide rail-11, material rack body-12, sleeve-13, feeding mechanism-2, feeding trolley-21, support platform-211, material blocking rod-22, limiting mechanism-3, limiting roller shaft-311, first limiting roller-312, second limiting roller-313, first slide seat-314, bump-K, second slide seat-315, first connecting rod-316, first drive unit-317, second drive unit-318, fixed seat-319, shaft ring-Z1, shaft cover bearing-Z2, pressing roller-321, groove-C, fourth drive unit-322, rotating shaft-323, pressing bracket-324, the first Five driving units -325, second connecting rod -326, synchronous wheel -327, encoder -328, third driving unit -33, screw -331, reducer -332, second transmission shaft -333, servo motor -334, fixed plate -341, limit plate -342, connecting plate -35, spindle mechanism -4, mandrel -411, first transmission shaft -412, mandrel flange cover -42, sleeve -431, wedge -432, tile -44, limit plate -45, limit block -46, brake pad -47, transmission sprocket -48, first driver -491, second driver -492, tail rack -5. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solution of the present invention, the following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solution in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] Reference Figures 1 to 6 A coil unwinding device of this embodiment is used for automatically feeding and unwinding coils, and includes a material rack mechanism 1, a feeding mechanism 2, a limiting mechanism 3, a spindle mechanism 4, and a tail material rack 5. The feeding mechanism 2 is slidably connected to the material rack mechanism 1, the limiting mechanism 3 and the spindle mechanism 4 are both fixedly connected to the material rack mechanism 1, the feeding mechanism 2 is used to automatically transfer the coil to the spindle mechanism 4, and the limiting mechanism 3 is used to limit the left and right sides and the side of the coil on the spindle mechanism 4 to prevent the coil from deviating.

[0027] Furthermore, if Figure 1 and Figure 6As shown, the material rack mechanism 1 includes a slide rail 11 and a material rack body 12 fixedly connected to one end of the slide rail 11, the height direction of the material rack body 12 is perpendicular to the length direction of the slide rail 11, and a sleeve 13 is fixedly arranged on the material rack body 12 to penetrate the thickness direction thereof, one end of the sleeve 13 is flush with one side of the material rack body 12, and the other end of the sleeve 13 extends outward from the other side of the material rack body 12. The feeding mechanism 2 includes a feeding trolley 21, a third driver for driving the feeding trolley 21 to move toward or away from the spindle mechanism 4, and a material stopper rod 22 fixedly arranged on both sides of the feeding trolley 21, and two material stopper rods 22 are arranged on each side of the feeding trolley 21 to limit the coil placed on the feeding trolley 21. The upper end of the loading trolley 21 includes a support 211, and the lower end of the loading trolley 21 is provided with a fourth driver, a second sensor and a third sensor. The fourth driver is connected to the support 211 and is used to drive the support 211 to rise and fall along the height direction of the loading trolley 21. In this embodiment, the second sensor is a displacement sensor, which is used to detect the lifting height of the fourth driver, and the third sensor is a magnetic switch sensor, which is used to detect the fixed point after the fourth driver is lifted and lowered, so as to control the lifting height of the support 211 as a whole, so as to adjust the height of the coil from the ground, so that the axis of the coil coincides with the axis of the main shaft body.

[0028] Furthermore, if Figure 4 and Figure 5 As shown, the spindle mechanism 4 is mainly used for unwinding the coil and feeding the coil to the next process after unwinding. The spindle mechanism 4 includes a mandrel 411, a first driver 491 for driving the mandrel 411 to rotate, a first transmission shaft 412 sleeved on the outer periphery of the mandrel 411, a second driver 492 for driving the first transmission shaft 412 to rotate, a mandrel flange cover 42 arranged at one end of the mandrel 411 away from the first driver 491, a sleeve 431 sleeved on the outer periphery of the first transmission shaft 412, a wedge block 432 connected to the sleeve 431, and a tile 44 fixedly connected to the wedge block 432, and an oblique wedge mechanism is formed between the sleeve 431 and the wedge block 432. Specifically, the present embodiment has two inclined wedge mechanisms, and three tiles 44 are evenly spaced. The three tiles 44 are arranged around the circumference of the first transmission shaft 412 and enclose a main shaft body for coiling. The length direction of the tiles 44 is parallel to the length direction of the mandrel 411 and perpendicular to the height direction of the rack body 12. Each inclined wedge mechanism includes a sliding sleeve 431 and three wedge blocks 432 equal in number to the number of tiles 44. The outer wall of each sliding sleeve 431 is evenly spaced with inclined grooves, and the inclined grooves and wedge blocks 432 are arranged one by one. The wedge blocks 432 of the two inclined wedge mechanisms located in the same length extension direction parallel to the first transmission shaft 412 are fixedly connected to the inner wall of a corresponding tile 44 at the same time. The two sliding sleeves 431 of the two inclined wedge mechanisms are fixedly connected to each other, and a sliding sleeve 431 close to the mandrel flange cover 42 is fixedly connected to the mandrel flange cover 42.

[0029] The first driver 491 is fixedly arranged at one end of the rack body 12 away from the feeding mechanism 2, the length of the mandrel 411 is greater than the length of the first transmission shaft 412, a limiting disk 45 is arranged between one end of the first transmission shaft 412 close to the mandrel flange cover 42 and the mandrel flange cover 42, and the limiting disk 45 is fixedly sleeved on the outer periphery of the end of the mandrel 411 close to the mandrel flange cover 42. The limiting disk 45 of this embodiment includes two limiting plates arranged opposite to each other, each limiting plate includes a number of blades equal to the number of tiles 44, and the blades on the two limiting plates are arranged one by one, so that there is a gap between the two corresponding blades on the two limiting plates. A limiting block 46 is fixedly arranged on the inner wall of one end of each tile 44 close to the limiting disk 45, and the end of the limiting block 46 away from the tile 44 is engaged with the gap between two blades on the two limiting plates of the limiting disk 45. Through the wedge formed between the wedge block 432 and the sleeve 431, when the first driver 491 pushes and pulls the mandrel 411, the mandrel flange cover 42 can be driven to move, and then the sleeve 431 can be driven to move. The movement of the sleeve 431 can drive the wedge block 432 to slide, and then the main shaft body formed between the three tiles 44 can expand and contract. When the main shaft body is expanded, that is, the outer diameter of the main shaft body becomes larger, the inner ring of the coil can be tightened. The setting of the limit block 46 can limit the left and right degrees of freedom of the tile 44.

[0030] The second driver 492 is fixedly arranged on the side of the material rack body 12, the length direction of the sleeve 13 is parallel to the length direction of the first transmission shaft 412, the length of the first transmission shaft 412 is greater than the length of the sleeve 13, and the first transmission shaft 412 runs through the length direction of the sleeve 13. Self-aligning roller bearings are arranged between the two ends of the sleeve 13 and the corresponding two ends of the first transmission shaft 412, so that the first transmission shaft 412 can rotate relative to the sleeve 13 under the driving action of the second driver 492, thereby rotating the coiled material. A brake pad 47 and a transmission sprocket 48 are arranged at one end of the first transmission shaft 412 close to the first driver 491, and the transmission sprocket 48 is connected to the second driver 492 through a chain transmission, so that the second driver 492 drives the first transmission shaft 412 to rotate and feed the material; a brake is arranged at the brake pad 47 to control the deceleration and stop of the first transmission shaft 412.

[0031] Furthermore, if Figure 1 and Figure 2As shown, the limiting mechanism 3 includes a material pressing arm assembly, limiting roller assemblies symmetrically arranged on both sides of the material rack mechanism 1, and a limiting bracket fixedly arranged on the top of the material rack body 12. The material pressing arm assembly is arranged above one of the limiting roller assemblies. Specifically, each limiting roller assembly includes a limiting roller shaft 311, a first slide 314 and a second slide 315 slidably sleeved on the outer periphery of the limiting roller shaft 311, a first limiting roller 312 connected to the first slide 314, a second limiting roller 313 connected to the second slide 315, a first driving unit 317 for driving the first limiting roller 312 to rotate circumferentially along the limiting roller shaft 311, and a second driving unit 318 for driving the first limiting roller 312 to move axially along the limiting roller shaft 311; the limiting mechanism 3 also includes a third driving unit 33 for driving the second limiting roller 313 to move axially along the limiting roller shaft 311. The first limiting roller 312 is close to the feeding mechanism 2. When the coil is on the spindle mechanism 4, the first limiting roller 312 is located at the end of the coil close to the feeding mechanism 2, and the second limiting roller 313 is located at the end of the coil away from the feeding mechanism 2. The limiting bracket includes a fixed plate 341 and two mutually parallel limiting plates 342 fixedly arranged on the top surface of the fixed plate 341. The limiting plates 342 are perpendicular to the limiting roller shaft 311. The limiting roller shaft 311 passes through the thickness direction of the two limiting plates 342. One of the limiting plates 342 is located at one end of the limiting roller shaft 311.

[0032] Each limiting roller assembly also includes a first connecting rod 316, one end of which is fixedly connected to one end of the limiting roller shaft 311, the other end of which is fixedly connected to one end of the first driving unit 317, and the other end of which is fixedly connected to the fixing plate 341. The first driving unit 317 of this embodiment is preferably a rotary cylinder, the pull rod of which is connected to the first connecting rod 316, and the rotary cylinder drives the pull rod to move, thereby driving the first connecting rod 316 to rotate, so that the limiting roller shaft 311 rotates. In addition, the first driving unit 317 of this embodiment has a built-in magnetic ring, and a fourth sensor is arranged outside it to detect the position of the pull rod in the first driving unit 317 to ensure the action of the first driving unit 317.

[0033] Each limiting roller shaft 311 is provided with a sliding groove along its axial direction. Figure 3As shown, each of the first slide 314 and the second slide 315 is provided with a protrusion K inside, one end of the protrusion K in the first slide 314 extends downward from the bottom surface of the first slide 314, and one end of the protrusion K in the second slide 315 also extends downward from the bottom surface of the second slide 315, and the slide groove is used for the protrusion K in the first slide 314 and the protrusion K in the second slide 315 to slide. A fixed seat 319 is fixedly provided at one end of each limiting roller shaft 311 near the limiting bracket, one end of the second driving unit 318 is fixedly connected to the first slide 314, and the other end of the second driving unit 318 is fixedly connected to the fixed seat 319. The second driving unit 318 of this embodiment is preferably a telescopic cylinder, and the pull rod of the telescopic cylinder is fixedly connected to the first slide 314. The telescopic cylinder drives its pull rod to extend and retract, thereby driving the first slide 314 to slide along the slide groove through the protrusion K inside it, so that the first limiting roller 312 slides along the length direction of the limiting roller shaft 311 to adjust the position of the first limiting roller 312. The second driving unit 318 of this embodiment has a built-in magnetic ring, and a fifth sensor is arranged on its outside to indirectly detect whether the first limiting roller 312 is in place.

[0034] Furthermore, the limiting mechanism 3 also includes a connecting plate 35 parallel to the limiting plate 342 , the two limiting rollers 311 both penetrate the thickness direction of the connecting plate 35 , and the two ends of the connecting plate 35 are fixedly connected to the two second slide seats 315 respectively. The third driving unit 33 of this embodiment includes a screw rod 331, a reducer 332, a second transmission shaft 333 and a servo motor 334. Two screw rods 331 are provided, and the screw rods 331 are correspondingly arranged with the limiting roller shaft 311. The screw rod 331 passes through the thickness direction of the connecting plate 35 and a limiting plate 342 close to the connecting plate 35. One end of the screw rod 331 is fixedly connected to the connecting plate 35, and the other end of the screw rod 331 is connected to the reducer 332. The two reducers 332 on the two screw rods 331 are connected through the second transmission shaft 333. The second transmission shaft 333 is connected to the servo motor 334. The servo motor 334 drives the second transmission shaft 333 to rotate, and then drives the connecting plate 35 to slide through the reducer 332 and the screw rod 331, and finally drives the second slide seat 315 to slide along the slide groove of the limiting roller shaft 311 through the protrusion K inside it. The connection plate 35 is provided so that the two second limiting rollers 313 on the two limiting roller shafts 311 move synchronously, and thus the positions of the two second limiting rollers 313 are synchronized. In this embodiment, a sixth sensor is also provided on the side of the second slide 315 close to the coil, which is used to detect the position of the second limiting roller 313 to ensure that the second limiting roller 313 can clamp the other end of the coil to prevent the coil from running off.

[0035] In addition, in order to ensure that the first limiting roller 312 and the second limiting roller 313 can roll with the rotation of the coil when the positions are adjusted to limit the two ends of the coil respectively, so as to prevent the first limiting roller 312 and the second limiting roller 313 from jamming the material and causing damage to the product, a self-lubricating shaft ring Z1 is arranged between the first limiting roller 312 and one end of the first slide 314 in this embodiment, and a shaft cover bearing Z2 is arranged between the first limiting roller 312 and the other end of the first slide 314 to ensure that the first limiting roller 312 can rotate relative to the first slide 314 as the coil rotates; a self-lubricating shaft ring is also arranged between the second limiting roller 313 and one end of the second slide 315, and a shaft cover bearing is also arranged between the second limiting roller 313 and the other end of the second slide 315 to ensure that the second limiting roller 313 can rotate relative to the second slide 315 as the coil rotates.

[0036] Furthermore, if Figure 1 and Figure 2 As shown, the pressing arm assembly includes a rotating shaft 323, a pressing bracket 324, a pressing roller 321, a second connecting rod 326, a fourth driving unit 322 for driving the pressing roller 321 to rotate, and a fifth driving unit 325 for driving the rotating shaft 323 to rotate. During the unwinding process of the coil on the spindle mechanism 4, the pressing roller 321 is driven to rotate relative to the coil by the fourth driving unit 322, so that the pressing roller 321 is always in contact with the outer surface of the coil.

[0037] The rotating shaft 323 penetrates the thickness direction of the limiting plate 342 and the limiting bracket, the rotating shaft 323 is parallel to the limiting roller shaft 311, one end of the rotating shaft 323 is rotatably connected to the two limiting plates 342, and the other end of the rotating shaft 323 is fixedly connected to the pressing bracket 324; the pressing roller 321 is connected to the end of the pressing bracket 324 away from the rotating shaft 323, and the length direction of the pressing bracket 324 is perpendicular to the length direction of the rotating shaft 323. The second connecting rod 326 is fixedly connected to the end of the rotating shaft 323 away from the pressing bracket 324, one end of the fifth driving unit 325 is fixedly connected to one end of the second connecting rod 326, and the other end of the fifth driving unit 325 is fixedly connected to a limiting plate 342 away from the connecting plate 35. The fifth driving unit 325 of this embodiment is also preferably a rotary cylinder, and the tension of the rotary cylinder is fixedly connected to one end of the second connecting rod 326. The rotary cylinder drives the pull rod action to drive the second connecting rod 326 to rotate, so that the rotating shaft 323 rotates, and then drives the pressing bracket 324 and the pressing roller 321 to rotate so that the pressing roller 321 is away from or close to the surface of the coil. The end of the rotating shaft 323 connected to the limit plate 342 is provided with a synchronous wheel 327, and one of the two limit plates 342 away from the pressing bracket 324 is fixedly provided with an encoder 328. The encoder 328 is connected to the synchronous wheel 327 through a chain transmission, and the encoder 328 detects the rotation position of the rotating shaft 323 and the pressing bracket 324.

[0038] In order to facilitate the unwinding and packaging of the coiled material, a groove C is provided on the outer wall surface of the pressing roller 321 along its circumference, and the length of the groove C is smaller than the length of the pressing roller 321. The arrangement of the groove C allows a gap to be provided between the pressing roller 321 and the surface of the coiled material, thereby preventing the coiled material strip from scratching and wearing the pressing roller 321 during unwinding and packaging.

[0039] Furthermore, if Figure 1 As shown, the tail material rack 5 is located on one side of the limiting mechanism 3, one end of the tail material rack 5 is connected to the pressing bracket 324, and the other end of the tail material rack 5 is fixedly connected to the bottom of the rack body 12. A first sensor is provided on the tail material rack 5 for detecting the height of the coil located on the spindle mechanism 4 from the ground to control the feeding speed of the coil.

[0040] The working process of the coil unwinding device of the utility model is as follows:

[0041] When the unwinding device is started, the loading trolley 21 carries the coil, and under the driving action of the fourth driver, the coil is lifted up, so that the axis of the coil is aligned with the axis of the main shaft body; at this time, the first driving unit 317 drives the limiting roller 311 to rotate, so as to drive the first limiting roller 312 to rotate and lift up, and the second driving unit 318 drives the first slide 314 to push outward, push the first limiting roller 312 to the outermost side, and avoid the coil; the third driving unit 33 drives the screw rod 331 to move and controls the second limiting roller 313 to move to the set position according to the parameters of the coil. Under the driving action of the third driver, when the loading trolley 21 carries the coil and penetrates the main shaft body of the main shaft mechanism 4, the sixth sensor located on the side of the second slide 315 close to the coil detects the coil, and the loading trolley 21 stops moving. The second sensor and the third sensor inside the loading trolley 21 simultaneously detect the rising height and the position after the fourth driver is raised, ensuring that the position where the loading trolley 21 stops is correct. After the loading trolley 21 is in place, the first driving unit 317 drives the first limiting roller 312 to rotate and lower, and the second driving unit 318 controls the first limiting roller 312 to retract to clamp one side of the coil. Subsequently, the first driver 491 is activated to control the mandrel 411 to retract, and at the same time drives the sleeve 431 to retract. When the sleeve 431 retracts, the tile 44 connected and fixed to the wedge block 432 will expand outward, that is, the main shaft body expands, thereby tightly stretching the inner circle of the coil; finally, the fifth driving unit 325 drives the rotating shaft 323 to rotate to drive the pressure bracket to rotate, so that the pressing roller 321 presses the surface of the coil, and then the strapping tape on the coil is pulled out of the groove C of the pressing roller 321, and the second driver 492 drives the first transmission shaft 412 to rotate to drive the main shaft body to rotate for feeding, and at the same time, the fourth driving unit 322 drives the pressing roller 321 to rotate relative to the coil to ensure that the pressing roller 321 presses the surface of the coil.

[0042] The above embodiments are only for illustrating the technical concept and features of the utility model, and their purpose is to enable people familiar with this technology to understand the content of the utility model and implement it accordingly. They cannot be used to limit the protection scope of the utility model. All equivalent changes or modifications made according to the spirit of the utility model should be included in the protection scope of the utility model.

Claims

1. A coil unwinding device, characterized in that: It includes a material rack mechanism, a feeding mechanism, a limiting mechanism and a spindle mechanism, the feeding mechanism is slidably connected to the material rack mechanism, the limiting mechanism and the spindle mechanism are fixedly connected to the material rack mechanism, the feeding mechanism is used to automatically transfer the coil to the spindle mechanism, the limiting mechanism includes a pressing arm assembly and limiting roller assemblies symmetrically arranged on both sides of the material rack mechanism, the pressing arm assembly is arranged above one of the limiting roller assemblies, each of the limiting roller assemblies includes a limiting roller shaft, a first limiting roller and a second limiting roller arranged on the limiting roller shaft, a first driving unit for driving the first limiting roller to rotate along the circumferential direction of the limiting roller shaft, and a first driving unit for driving the first limiting roller to rotate along the limiting roller shaft. The limiting mechanism further comprises a second driving unit for axially moving the limiting roller shaft, the limiting mechanism also comprises a third driving unit for driving the second limiting roller to move axially along the limiting roller shaft, the first limiting roller is close to the feeding mechanism, when the coil is located on the spindle mechanism, the first limiting roller is located at one end of the coil close to the feeding mechanism, and the second limiting roller is located at one end of the coil away from the feeding mechanism; the pressing arm assembly comprises a pressing roller and a fourth driving unit for driving the pressing roller to rotate, during the process of unwinding the coil on the spindle mechanism, the fourth driving unit is used to drive the pressing roller to rotate relative to the coil so that the pressing roller abuts against the outer surface of the coil.

2. The coil unwinding device according to claim 1, characterized in that: The limiting mechanism also includes a limiting bracket fixedly arranged on the top of the material rack mechanism, the limiting bracket includes a fixed plate and two mutually parallel limiting plates fixedly arranged on the top surface of the fixed plate, the limiting plate is perpendicular to the limiting roller shaft, the limiting roller shaft passes through the thickness direction of the two limiting plates, and one of the limiting plates is located at one end of the limiting roller shaft.

3. The coil unwinding device according to claim 2, characterized in that: Each of the limiting roller assemblies includes a first slide, a second slide and a first connecting rod, the first slide and the second slide can be slidably mounted on the outer circumference of the limiting roller shaft, the first slide is connected to the first limiting roller, and the second slide is connected to the second limiting roller; one end of the first connecting rod is fixedly connected to one end of the limiting roller shaft, the other end of the first connecting rod is fixedly connected to one end of the first driving unit, the other end of the first driving unit is fixedly connected to the fixed plate, one end of the second driving unit is fixedly connected to the first slide, and the other end of the second driving unit is fixedly connected to the limiting roller shaft.

4. The coil unwinding device according to claim 3, characterized in that: The limiting mechanism also includes a connecting plate, which is parallel to the limiting plate, and the two limiting rollers both penetrate the thickness direction of the connecting plate and the two ends of the connecting plate are respectively fixedly connected to the two second slide seats; one end of the third driving unit is fixedly connected to the connecting plate, and the other end of the third driving unit is fixedly connected to the limiting bracket.

5. The coil unwinding device according to claim 3, characterized in that: The outer wall surface of the pressure roller is provided with a groove along its circumference, and the length of the groove is smaller than the length of the pressure roller; the pressure arm assembly also includes a rotating shaft, a pressure bracket and a fifth driving unit, and the fifth driving unit is used to drive the rotating shaft to rotate, and the rotating shaft passes through the thickness direction of the limit plate and the limit bracket, and the rotating shaft is parallel to the limit roller axis, one end of the rotating shaft is rotatably connected to the limit plate, and the other end of the rotating shaft is fixedly connected to the pressure bracket, and the pressure roller is connected to the end of the pressure bracket away from the rotating shaft.

6. The coil unwinding device according to claim 5, characterized in that: The pressing arm assembly also includes a second connecting rod, which is fixedly connected to one end of the rotating shaft away from the pressing bracket, one end of the fifth driving unit is fixedly connected to one end of the second connecting rod, and the other end of the fifth driving unit is fixedly connected to the limiting plate; a synchronous wheel is provided at the end of the rotating shaft connected to the limiting plate, and an encoder is fixedly provided on one of the two limiting plates away from the pressing bracket, and the encoder is transmission-connected to the synchronous wheel.

7. The coil unwinding device according to claim 5, characterized in that: The spindle mechanism includes a core shaft, a first driver for driving the core shaft to rotate, a first transmission shaft sleeved on the outer circumference of the core shaft, a second driver for driving the first transmission shaft to rotate, a core shaft flange cover arranged at an end of the core shaft away from the first driver, a sliding sleeve sleeved on the outer circumference of the first transmission shaft, a wedge block connected to the sliding sleeve, and a tile fixedly connected to the wedge block, an inclined wedge mechanism is formed between the sliding sleeve and the wedge block, a limiting disk is arranged between an end of the first transmission shaft close to the core shaft flange cover and the core shaft flange cover, the limiting disk is fixedly sleeved on the outer circumference of the end of the core shaft close to the core shaft flange cover, a limiting block is fixedly arranged on the inner wall of the tile, and the end of the limiting block away from the tile is clamped with the limiting disk.

8. The coil unwinding device according to claim 7, characterized in that: The tiles are arranged in plurality at even intervals, and are arranged circumferentially around the first transmission shaft. The length direction of the tiles is parallel to the length direction of the core shaft and perpendicular to the height direction of the material rack mechanism. The tiles are enclosed to form a main shaft body, and the main shaft body is used for the coil to be sleeved. The number of the limit blocks is equal to the number of the tiles. The inclined wedge mechanisms are arranged in plurality at intervals, and adjacent two sliding sleeves of two adjacent inclined wedge mechanisms are fixedly connected, and one sliding sleeve close to the core shaft flange cover is fixedly connected to the core shaft flange cover. The number of the wedge blocks in each inclined wedge mechanism is equal to the number of the tiles.

9. The coil unwinding device according to claim 8, characterized in that: The material rack mechanism includes a slide rail and a material rack body fixedly connected to one end of the slide rail, the height direction of the material rack body is perpendicular to the length direction of the slide rail, a sleeve is fixedly arranged on the material rack body, the sleeve passes through the thickness direction of the material rack body, the length direction of the sleeve is parallel to the length direction of the first transmission shaft, the first transmission shaft passes through the length direction of the sleeve and is rotatably connected to the sleeve; the loading mechanism includes a loading trolley and a material blocking rod fixedly arranged on both sides of the loading trolley, the slide rail is used for the sliding of the loading trolley; the loading trolley is used to place the coil to be loaded and adjust the height of the coil from the ground so that the axis center line of the coil coincides with the axis center line of the spindle body.

10. The coil unwinding device according to claim 9, characterized in that: It also includes a tail material rack, which is located on one side of the limiting mechanism, one end of the tail material rack is connected to the pressing bracket, and the other end of the tail material rack is fixedly connected to the bottom of the rack body, and a first sensor is arranged on the tail material rack, and the first sensor is used to detect the height of the coil located on the spindle mechanism from the ground.

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