Unwinding device of cutting winding machine

Abstract

The technical scheme belongs to the technical field of cutting and winding machines, and particularly relates to an unwinding device of a cutting and winding machine, which comprises a rack, the rack is provided with an unwinding mechanism, the unwinding mechanism comprises a winding drum shaft and a feeding brake, the winding drum shaft is rotatably arranged relative to the rack, the winding drum shaft is coaxially fixed with a winding drum through a material fixing assembly, and the feeding brake is arranged on the winding drum. The feeding brake drives the winding drum shaft to rotate and is used for sending out paper materials, after an operator rolls the paper materials into a barrel-shaped winding drum and installs the winding drum on the winding drum shaft, the material fixing assembly automatically and coaxially fixes the winding drum and the winding drum shaft through a mechanical locking structure, and installation deviation is eliminated. When the feeding brake drives the winding drum shaft to rotate at a constant speed, paper materials are continuously output with constant tension, the winding drum shaft is of a double-bearing supporting structure, the radial stability is kept during high-speed rotation, the axial limiting function of the material fixing assembly is matched, radial run-out and axial deviation of a paper roll are restrained, the tension fluctuation amplitude of the paper materials in the unwinding process is reduced, and the unwinding efficiency is improved. The fracture risk is reduced.

Description

Technical Field

[0001] This technical solution relates to the field of cutting and winding machine technology, and specifically refers to an unwinding device for a cutting and winding machine. Background Technology

[0002] A cutting and winding machine is an automated device specifically designed for the efficient processing of materials such as paper (e.g., kraft paper). Through precise cutting and winding functions, it cuts wide-width raw paper to preset dimensions and then synchronously winds it into a spool by a constant tension control system, ensuring uniform cutting width and neat and tight winding.

[0003] Existing paper materials (such as kraft paper) are rolled into cylindrical paper rolls. When the unwinding device of the existing cutting equipment is changed, there is a problem of inaccurate coaxial positioning. This causes the paper roll to easily generate radial runout and axial displacement during high-speed unwinding, which in turn leads to paper tension fluctuations, edge wrinkling, or even breakage. Summary of the Invention

[0004] This technical solution aims to improve the problem of radial runout and axial displacement of the paper roll during unwinding caused by inaccurate coaxial positioning when changing paper rolls in existing cutting equipment, which in turn leads to paper breakage. It provides an unwinding device for a cutting and rewinding machine.

[0005] The purpose of this technical solution is achieved as follows:

[0006] An unwinding device for a cutting and rewinding machine includes a frame, the frame being provided with an unwinding mechanism, the unwinding mechanism including a roll shaft and a feeding brake, the roll shaft being rotatably disposed relative to the frame, the roll shaft being provided with a material fixing assembly, the material fixing assembly being used to coaxially fix a paper roll formed by winding paper material to the roll shaft, the feeding brake driving the roll shaft to rotate, thereby causing the paper roll to rotate and feed out the paper material.

[0007] With the above technical solution, when the unwinding device of a cutting and rewinding machine is in normal use, the operator rolls the paper material into a cylindrical paper roll and installs it onto the roll shaft. The fixing component automatically and coaxially fixes the paper roll and the roll shaft through a mechanical locking structure, eliminating installation deviation. When the feeding brake drives the roll shaft to rotate at a constant speed, the paper material is continuously output with constant tension. The roll shaft adopts a double bearing support structure to maintain radial stability during high-speed rotation. Combined with the axial limiting function of the fixing component, it suppresses the radial runout and axial displacement of the paper roll, reduces the tension fluctuation amplitude of the paper material during unwinding, and reduces the risk of breakage.

[0008] Preferably, the material setting assembly includes a material setting cylinder and a material setting component movably connected to the output end of the material setting cylinder. The roll shaft has a clearance groove for the material setting component to pass through, and the material setting cylinder drives the material setting component to press against the inner wall of the paper roll.

[0009] Through the technical scheme, the material fixing cylinder pushes the material fixing part located in the letting-in groove to expand radially to tightly press against the inner wall of the winding shaft, so that synchronous locking and power transmission of the rotating shaft and the winding shaft are realized.

[0010] Preferably, the rack is provided with bearing seats, the bearing seats at least include two, a bearing member is mounted inside the bearing seats, and the winding shaft has shaft rods at two axial ends, and the two shaft rods are connected to the bearing members on the two sides one by one.

[0011] Through the technical scheme, stable support is realized through the bearing seats symmetrically arranged on the two sides of the rack, the shaft rod parts at the two ends of the paper winding drum are respectively embedded into the bearing members on the two sides to form a double-point rigid positioning structure, and in the unwinding process, the rotating load is synchronously borne by the bearing on the two sides, so that the dynamic balance performance of the paper roll is improved.

[0012] Preferably, the bearing seat includes a seat body one and a seat body two, the seat body one and the seat body two are detachably connected, an installation cavity is formed by splicing the seat body one and the seat body two, and the bearing member is mounted in the installation cavity.

[0013] Through the technical scheme, the bearing seat is designed to be detachably spliced by the seat body one and the seat body two, the seat body one is easily detached, the seat body two is opened, the rotating shaft is mounted in the bearing member and placed on the upper end of the seat body two, after the seat body one and the seat body two are connected, the rotating shaft and the bearing member are limited in the installation cavity, and the paper material drum is placed for carrying.

[0014] Preferably, the output end of the feeding brake is provided with a transmission gear one, and the shaft rod is correspondingly provided with a transmission gear two which can mesh with the transmission gear one to transmit power.

[0015] Through the technical scheme, the brake drives the transmission gear one to rotate, power is directly transmitted to the transmission gear two of the rotating shaft through gear meshing, the winding shaft is precisely rotated, power transmission is ensured to have no slip, and the synchronous precision of the rotating speed is high.

[0016] Preferably, the rack is provided with a counting mechanism, and the counting mechanism includes:

[0017] A rubber wheel is arranged on the rack, the rack is provided with a support rod, and the rubber wheel movably abuts against the support rod, so that when the paper material is conveyed through the gap between the rubber wheel and the support rod, the rubber wheel abuts against the surface of the paper material and synchronously rolls;

[0018] A counter is linked with the rubber wheel to convert the paper material conveying length according to the rotating number of the rubber wheel.

[0019] Through the technical scheme, the support rod and the rubber wheel abutment provide a support basis for the rubber wheel, the rubber wheel keeps contact with the paper material through self-weight or elastic compression mechanism during the paper material advancing, the rubber wheel rotates synchronously with the paper material surface conveying and rolling, the counter detects the number of rotations of the rubber wheel and converts the real-time conveying length of the paper material in combination with the circumference of the rubber wheel, when the paper material is about to run out, the operator is reminded to replace the new paper material, the subsequent paper material is prevented from being disconnected, the tedious feeding operation needs to be repeated, and the paper material unwinding is realized real-time monitoring and accurate metering.

[0020] Preferably, a feeding roller is arranged on the rack, the feeding roller is rotatably arranged on the rack, and is used for guiding the paper material to feed along a set direction.

[0021] Through the technical scheme, in the process of conveying the paper material along the set path, the continuous rotation of the plurality of feeding rollers is guided to ensure that the paper material is continuously abutted.

[0022] Preferably, the top of the rack is provided with a carrying device, and the carrying device comprises:

[0023] The carrying crane is slidably arranged on the top of the rack;

[0024] The carrying hoist is movably arranged at the output end of the lower part of the carrying crane, and the carrying crane drives the carrying hoist to move up and down, so as to obtain and transfer the paper material reel.

[0025] Through the technical scheme, the carrying crane is slidably arranged on the top of the rack;

[0026] Preferably, the rack further comprises a movable frame slidably connected to the rack, the movable frame is provided with the unwinding mechanism and the bearing seat, and the rack is provided with a deviation rectifying mechanism, the deviation rectifying mechanism comprises:

[0027] The detection member one is arranged on the rack;

[0028] The detection member two is symmetrically arranged with the detection member one on both sides of the rack along the paper material advancing path, so that the two side edges of the paper material pass through the opposite detection ports between the detection member one and the detection member two;

[0029] The deviation correction driving member is connected to the movable frame at the driving end. When the detection member one or the detection member two detects that the paper material deviates from the set position, the deviation correction driving member drives the movable frame to move transversely, so as to change the output path of the paper material.

[0030] Through the above technical scheme, when the paper material deviates laterally during running, the detection member on the deviation side triggers a signal, and the deviation correction driving member drives the movable frame to slide transversely along the frame, and drives the whole winding shaft to slightly translate to correct the output path of the paper material, so that the paper material returns to the central position in real time. Through the closed-loop control of the dynamic monitoring of the double detection members and the linkage deviation correction of the movable frame, online automatic deviation correction during the unwinding process of the paper material is realized. The problems of paper material deviation before cutting caused by eccentricity of the winding material, tension fluctuation or mechanical error are effectively eliminated. The consistency of the cutting width and the alignment accuracy of the winding are ensured. The frequency of manual intervention and the material loss are reduced.

[0031] The technical scheme has the following prominent and beneficial technical effects compared with the prior art:

[0032] 1. The technical scheme realizes dynamic balance during high-speed rotation of the winding paper cylinder through mechanical locking automatic centering and double-bearing support structure, axial limiting and radial stable cooperative control, effectively suppresses radial jumping and axial deviation of the paper roll, maintains constant unwinding tension, and reduces the risk of breakage.

[0033] 2. The technical scheme realizes accurate metering and remaining amount reminding during the unwinding process through the elastic compression of the paper material by the rubber wheel, synchronous rotation with the paper material, real-time monitoring of the conveying length through circumference conversion, automatic counting and early warning, avoids material disconnection, and reduces repeated feeding operations caused by manual intervention.

[0034] 3. The technical scheme realizes real-time monitoring of paper material deviation through the double detection members of the deviation correction mechanism, triggers the deviation correction driving member to transversely fine-tune the position of the winding paper cylinder, and realizes real-time centering of the output path of the paper material. The deviation caused by eccentricity of the winding material and tension fluctuation is eliminated. The consistency of the cutting width and the alignment accuracy of the winding are ensured. Manual intervention and material waste are reduced. BRIEF DESCRIPTION OF DRAWINGS

[0035] Figure 1 It is a schematic diagram of the overall structure of the embodiment;

[0036] Figure 2 It is a schematic diagram of the overall structure of the embodiment; Figure 1 It is a partial enlarged schematic diagram one of the embodiment;

[0037] Figure 3 It is a partial enlarged schematic diagram two of the embodiment; Figure 1 It is a partial enlarged schematic diagram two of the embodiment;

[0038] Figure 4 It is a partial sectional view schematic diagram of the embodiment;

[0039] Figure 5The embodiment is a local structure schematic diagram. Figure 4 A local enlarged schematic view;

[0040] Figure 6 The embodiment is a local structure schematic diagram.

[0041] Reference signs: 1, frame; 2, unwinding mechanism; 21, winding shaft; 22, feeding brake; 3, feeding assembly; 31, feeding cylinder; 32, feeding piece; 4, accommodation groove; 5, bearing seat; 51, seat body one; 52, seat body two; 6, bearing piece; 7, shaft rod; 8, mounting cavity; 9, transmission gear one; 10, gear two; 11, counting mechanism; 111, rubber wheel; 112, counter; 12, support rod; 13, feeding roller; 14, carrying device; 141, carrying crane; 142, carrying sling; 15, movable frame; 16, deviation rectifying mechanism; 17, detection piece one; 18, detection piece two; 19, deviation rectifying driving piece; 100, paper material winding drum. DETAILED DESCRIPTION

[0042] The specific embodiments of the technical solution will be further described in detail below with reference to the drawings.

[0043] Embodiment:

[0044] Reference signs: Figure 1 An unwinding device of a cutting and winding machine comprises a frame 1, the frame 1 is provided with an unwinding mechanism 2, which is arranged at the front end of the frame 1, the unwinding mechanism 2 comprises a winding shaft 21 and a feeding brake 22, and further comprises a movable frame 15, which is slidably connected with the frame 1 through a pulley and slide structure, and the sliding direction is arranged in a transverse direction.

[0045] Reference signs: Figure 2 , Figure 4 and Figure 5 The winding shaft 21 is rotatably installed on the movable frame 15, the paper material winding drum 100 is formed by winding paper material into a cylindrical shape, the size and shape of the winding shaft 21 are matched with the inner cylindrical shaft hole of the paper material winding drum 100, the material of the paper material is preferably kraft paper, the winding shaft 21 penetrates through the cylindrical shaft hole and is fixed therewith, and a feeding assembly 3 is arranged inside the winding shaft 21, which comprises a feeding cylinder 31 and a feeding piece 32, the feeding piece 32 is slidably arranged relative to the winding shaft 21, the sliding direction is perpendicular to the rotating direction of the winding shaft 21, the winding shaft 21 is correspondingly provided with an accommodation groove 4 for the feeding piece 32 to pass through along the outer wall, the output end of the feeding cylinder 31 is connected with the feeding piece 32, for driving the feeding piece 32 to move outward, the feeding piece 32 can abut against the inner sidewall of the paper material winding drum 100, at this time, the winding shaft 2121 is coaxially fixed with the paper material winding drum 100, and drives the paper material winding drum 100 to rotate to stably feed out the paper material.

[0046] The specific mounting mode is provided with two bearing seats 5 through the movable frame 15, which are bolted to the upper end face of the movable frame 15, and each bearing seat 5 comprises a seat body one 51 and a seat body two 52, the seat body one 51 and the seat body two 52 are bolted to each other, the drum shaft 21 has a shaft rod 7, which is arranged at both ends of the drum shaft 21 in the axial direction, and the mounting positions of the two bearing seats 5 are matched with the two end shaft rods 7; a bearing is sleeved on the shaft rod 7, the seat body one 51 is opened to the bearing seat 5, the two end shaft rods 7 can be embedded into the two seat body twos 52 one by one, and the seat body one 51 is installed, the bearing is guided in the bearing seat 5 to rotate the shaft rod 7, so as to reduce the rotating friction.

[0047] The feeding brake 22 is mounted on the movable frame 15 and located beside the drum shaft 21, the feeding brake 22 can adopt an electromagnetic powder brake, which is used to provide power to the shaft rod 7, and a transmission gear two 10 is coaxially fixed to the end of the shaft rod 7 close to the feeding brake 22, and a transmission gear one 9 is fixed to the output end of the feeding brake 22, so that the feeding brake 22 can drive the shaft rod 7 to rotate, and then drive the drum shaft 21 to rotate.

[0048] Referring to Figure 3 , the rack 1 is provided with a carrying device 14, which is mounted at the top end of the rack 1, and the top end of the rack 1 extends towards the position of the unwinding mechanism 2, so that the position of the carrying device 14 is above the unwinding mechanism 2, the carrying device 14 comprises a carrying crane 141 and a carrying sling 142, the carrying crane 141 is slidably connected with the rack 1 through a pulley block arranged at the upper end, and the carrying sling 142 is mounted at the output end of the lower end of the carrying crane 141, the carrying sling 142 shown in the embodiment comprises two hooks, the carrying crane 141 drives the carrying sling 142 to descend, the carrying sling 142 corresponds to the two hooks sleeved on the two end shaft rods 7, the carrying crane 141 drives the carrying sling 142 to ascend, and drives the drum shaft 21 to be lifted upwards, so as to place the paper roll 100 on the movable frame 15, and reduce manual carrying.

[0049] The rack 1 is provided with a plurality of feeding rollers 13, which are arranged at intervals along the length direction of the rack 1, and the feeding is cooperatively performed by the plurality of rollers, each feeding roller 13 is connected with the rack body on both sides of the rack 1 through both ends and is rotatably arranged relative to the rack 1, the rotating axes of each feeding roller 13 are parallel to each other, and the differential speed cooperation and the spatial phase difference arrangement of the roller array are adopted to cooperatively guide the paper material to realize stable feeding along the preset angle and direction.

[0050] Referring to Figure 6The frame 1 is equipped with a correction mechanism 16, which includes a first detection element 17, a second detection element 18, and a correction drive element 19. The second detection element 18 and the first detection element 17 are symmetrically arranged on both sides of the frame 1 along the paper material travel path, and are both welded and fixed to the frame 1. The detection ports of the two detection elements face each other, forming an oblique cross monitoring area. The two feed rollers 13 guide the paper material through the space between the first detection element 17 and the second detection element 18, so that the two edges of the paper material pass through the detection ports between the two detection elements. The correction drive element 19 is installed on the frame 1, and its output end is connected to the movable frame 15. The position signal of the paper material is detected by the two detection elements. When the detection element on either side detects that the offset of the paper material edge exceeds the set threshold, the control system operates the correction drive element 19 to drive the movable frame 15 to move laterally and perform corresponding lateral displacement compensation. The dynamic angle formed by the axis of the roll shaft 2121 and the axis of the feed roller 13 is used to adjust the tension distribution of the paper material, thereby realizing real-time correction of the output path.

[0051] The frame 1 is equipped with a counting mechanism 11, located on the side of the correction mechanism 16 opposite to the unwinding mechanism 2. The counting mechanism includes a rubber wheel 111 and a counter 112. The rubber wheel 111 is made of rubber and has a certain friction. The rubber wheel 111 is rotatably connected to a cantilever bracket on the side of the frame 1, and its rotation axis is perpendicular to the paper's travel direction. The frame 1 is equipped with a support rod 12, located below the rubber wheel 111, with a gap between it and the rubber wheel 111 smaller than the paper's thickness. Both ends of the support rod are fixed to the sides of the frame 1. When the paper passes through the gap via the lower side of the adjacent feed roller 13, the rubber wheel... The roller 111 elastically presses the paper material onto the roller, and the support rod 12 provides support. The roller 111 rolls synchronously through friction. The counter 112 is mounted on the cantilever bracket on the side of the frame 1 and is coaxially connected to the spindle of the roller 111. The counter 112 can be equipped with a high-precision rotary encoder. By converting the rotation signal of the roller 111 into the paper material feeding length and recording the length, it can remind the user when the paper material on the paper roll 100 is about to run out. This avoids the need to rearrange the paper material when replenishing the paper roll due to the paper material running out, thus reducing trouble.

[0052] The specific work process of this plan is as follows:

[0053] This technical solution involves the operator rolling the paper material into a cylindrical paper roll 100 and installing it onto the roll shaft 21. The fixing assembly 3 then automatically and coaxially fixes the paper roll and the roll shaft 21 through a mechanical locking structure, eliminating installation deviations. When the feeding brake 22 drives the roll shaft 21 to rotate at a constant speed, the paper material is continuously output with a constant tension. The roll shaft 21 adopts a double bearing support structure to maintain radial stability during high-speed rotation. Combined with the axial limiting function of the fixing assembly 3, it suppresses the radial runout and axial offset of the paper roll, reduces the tension fluctuation amplitude of the paper material during unwinding, and reduces the risk of breakage.

[0054] The basic principle and main features of the technical solution and the advantages of the technical solution are shown and described above. Those skilled in the art should understand that the technical solution is not limited to the above-mentioned embodiments, and the above-mentioned embodiments and descriptions in the specification are only to illustrate the principle of the technical solution. Without departing from the spirit and scope of the technical solution, various changes and improvements can be made to the technical solution, and these changes and improvements all fall within the scope of the claimed technical solution. The scope of protection of the technical solution is defined by the appended claims and their equivalents.

Claims

1. An unwinding device for a cutting and winding machine, comprising a frame (1), characterized in that: The frame (1) is provided with an unwinding mechanism (2), which includes a roll shaft (21) and a feeding brake (22). The roll shaft (21) is rotatably arranged relative to the frame (1). The roll shaft (21) is provided with a material fixing assembly (3). The material fixing assembly (3) is used to fix the paper roll (100) formed by winding the paper material coaxially with the roll shaft (21). The feeding brake (22) drives the roll shaft (21) to rotate, so as to make the paper roll (100) rotate and feed out the paper material.

2. The unwinding device of a cutting and winding machine according to claim 1, characterized in that: The material setting assembly (3) includes a material setting cylinder (31) and a material setting component (32) movably connected to the output end of the material setting cylinder (31). The roll shaft (21) has a clearance groove (4) for the material setting component (32) to pass through. The material setting cylinder (31) drives the material setting component (32) to press against the inner wall of the paper material tube.

3. The unwinding device of a cutting and winding machine according to claim 1, characterized in that: The frame (1) is provided with bearing seats (5), and the bearing seats (5) include at least two. A bearing component (6) is installed inside the bearing seat (5). The drum shaft (21) has shafts (7) at both ends along the axial direction. The two shafts (7) are connected one-to-one to the bearing components (6) on both sides.

4. The unwinding device of a cutting and winding machine according to claim 3, characterized in that: The bearing housing (5) includes a first housing body (51) and a second housing body (52). The first housing body (51) and the second housing body (52) are detachably connected. The first housing body (51) and the second housing body (52) are spliced ​​together to form an installation cavity (8). The bearing component (6) is installed in the installation cavity (8).

5. The unwinding device of a cutting and winding machine according to claim 3, characterized in that: The output end of the feeding brake (22) is provided with a transmission gear one (9), and the shaft (7) is provided with a corresponding transmission gear two (10) that can mesh with the transmission gear one (9) for transmission.

6. The unwinding device of a cutting and winding machine according to claim 1, characterized in that: The frame (1) is provided with a counting mechanism (11), the counting mechanism (11) comprising: A rubber wheel (111) is mounted on the frame (1), and a support rod (12) is mounted on the frame (1). The rubber wheel (111) moves against the support rod (12) so that when the paper is conveyed through the gap between the rubber wheel (111) and the support rod (12), the rubber wheel (111) rolls synchronously against the surface of the paper. A counter (112) is linked to the rubber wheel (111) to calculate the paper feeding length based on the number of rotations of the rubber wheel (111).

7. The unwinding device of a cutting and winding machine according to claim 1, characterized in that: The frame (1) is provided with a feeding roller (13), which is rotatably mounted on the frame (1) and is used to guide the paper material to be fed in a set direction.

8. The unwinding device of a cutting and winding machine according to claim 1, characterized in that: The top of the frame (1) is provided with a conveying device (14), the conveying device (14) comprising: A transport crane (141) is slidably disposed along the top of the frame (1); A handling hoist (142) is movably disposed at the output end of the lower part of the handling crane (141). The handling crane (141) drives the handling hoist (142) to move up and down to acquire and transfer the paper roll (100).

9. The unwinding device of a cutting and winding machine according to claim 2, characterized in that: It also includes a movable frame (15) which is slidably connected to the frame (1). The movable frame (15) is provided with the unwinding mechanism (2) and the bearing seat (5). The frame (1) is provided with a correction mechanism (16), which includes: Test component 1 (17) is mounted on the frame (1); The second detection element (18) is symmetrically arranged with the first detection element (17) on both sides of the frame (1) along the paper material travel path, so that the two sides of the paper material pass through the detection ports between the first detection element (17) and the second detection element (18). The correction drive (19) is connected to the movable frame (15) at its drive end. When the first detector (17) or the second detector (18) detects that the paper material deviates from the set position, the correction drive (19) drives the movable frame (15) to move laterally to change the output path of the paper material.

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