Automatic paper core placing device and rewinding machine

Abstract

The present invention discloses an automatic paper core placing device and a rewinding machine, including a paper core feeding mechanism, the paper core feeding mechanism includes an obliquely arranged paper core platform, a paper core shifter with a concave upper end surface is arranged on the outer side of the lowest part of the paper core platform, a slideway with a concave upper end surface is arranged on the outer side of the paper core shifter away from the paper core platform, a channel is opened in the middle of the concave slideway, a push rod is arranged in the channel, and the push rod is driven by a pushing mechanism; the end of the paper core shifter close to the paper core platform is hinged and fixed, the end of the paper core shifter away from the paper core platform is hinged with a vertically arranged cylinder II, and the height of the hinged fixed end of the paper core shifter is higher than the end point height of the slideway close to the paper core shifter. Compared with the prior art, the present invention does not need to manually place the paper core, realizes the automation of paper core roll change, and after the paper core roll change is completed, it only needs to manually stick the paper head to the paper core, the operation is simple, the roll change time is short, the labor intensity of workers is greatly reduced, and the work efficiency is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of paper processing equipment in the papermaking industry, and particularly relates to an automatic paper core placing device and a rewinding machine. Background Art

[0002] The rewinder is a device that re-unwinds, longitudinally trims, cuts, and rewinds the wide, rough-edged, large roll of base paper produced on the paper production line into commercial paper rolls. The existing rewinder includes a paper unwinding device, a longitudinal cutting device, a paper pressing roller device, an arc roller, a top paper core device, a paper pushing roller device, front and rear bottom roller devices, a frame, a paper unloading device, a paper guide roller device, and a transmission device. Its structural form is divided into a single-roller driven single-roller rewinder, a single-roller driven double-roller rewinder, and a double-roller driven double-roller rewinder according to the number of bottom rollers and the driving mode.

[0003] In the process of rewinding the mother roll into a commercial paper roll, the roll needs to be changed continuously. At present, the order of changing rolls is: after stopping the machine, the operator inserts the paper core into the center of the two bottom rollers, and then cuts the paper with a blade. After the paper roller pushes the paper roll out, the paper head is glued to the paper core with double-sided tape, and finally the excess paper edge is cut off. This traditional roll changing method is very cumbersome to operate, prolongs the roll changing time, increases the labor intensity of the workers, and has low work efficiency. Summary of the invention

[0004] In order to solve the problem of manual handling and placement of paper cores in the prior art, the present invention provides an automatic paper core placing device and a rewinding machine, which realize automatic roll changing, simple operation, short roll changing time, greatly reduce the labor intensity of workers, and improve work efficiency.

[0005] The object of the present invention is achieved in the following manner:

[0006] An automatic paper core placing device comprises a paper core feeding mechanism 12, wherein the paper core feeding mechanism 12 comprises an obliquely arranged paper core platform 1201, a paper core shifter 1202 with a concave upper end surface is arranged on the outer side of the lowest part of the paper core platform 1201, a slideway 1205 with a concave upper end surface is arranged on the outer side of the paper core shifter 1202 away from the paper core platform 1201, a channel is opened in the middle of the concave part of the slideway 1205, a push rod 1206 is arranged in the channel, and the push rod 1206 is driven by a pushing mechanism 1207; the end of the paper core shifter 1202 close to the paper core platform 1201 is hinged and fixed, and the end of the paper core shifter 1202 away from the paper core platform 1201 is hinged with a vertically arranged cylinder II 1204, and the height of the hinged fixed end of the paper core shifter 1202 is higher than the height of the end point of the slideway 1205 close to the paper core shifter 1202.

[0007] The side of the paper feeding core mechanism 12 is provided with a paper core placing mechanism 7 installed at the bottom of the paper pushing roller mechanism 6, and the paper core placing mechanism 7 includes a paper core supporting plate 704 fixedly mounted on the outer side of the bottom of the paper pushing roller mechanism 6, and an L-shaped clamping arm 703 is fixedly mounted on the inner side edge of the paper core supporting plate 704. The paper core supporting plate 704 and the L-shaped clamping arm 703 form a semi-open drawer for placing the paper core, and the semi-open drawer is connected to the slide 1205.

[0008] The paper core placing mechanism 7 also includes a rotating arm 701 hinged on the outer side of the bottom of the paper pushing roller mechanism 6, the rotating arm 701 extends above the paper core supporting plate 704, and a clamping cylinder 702 is fixedly installed on the extended end of the rotating arm 701. The piston rod of the clamping cylinder 702 is hinged to the piston rod of the hydraulic cylinder IV603, and the other end of the hydraulic cylinder IV603 is hinged to the paper pushing roller mechanism 6; the piston rod of the hydraulic cylinder IV603 is aligned with the paper core entrance of the paper core supporting plate 704.

[0009] The pushing mechanism 1207 includes a synchronous belt and a synchronous pulley. The synchronous pulley is driven by a reduction motor. The conveying direction of the synchronous belt is parallel to the axial direction of the slideway 1205. The synchronous belt is fixedly connected to a push rod 1206 in the middle of the slideway 1205.

[0010] The upper end surface of the pit of the paper core moving device 1202 and the upper end surface of the depression of the slideway 1205 are both V-shaped.

[0011] A rewinding machine includes the automatic paper core placing device, and also includes a frame 10, a paper unwinding mechanism 1, a paper guide roller mechanism 13, a longitudinal cutting mechanism 2, front and rear bottom roller mechanisms 9, a paper pressing roller mechanism 3, a paper core top mechanism 5 and a paper pushing roller mechanism 6.

[0012] The paper pressing roller mechanism 3 includes a hydraulic cylinder II 301 fixedly mounted on the frame 10, the piston rod of the hydraulic cylinder II 301 faces downward and a crossbeam slider 302 is fixedly mounted on the end of the piston rod, a paper pressing roller 304 is fixedly mounted on the bottom of the crossbeam slider 302, a slide rail 303 is arranged from top to bottom on the side of the crossbeam slider 302, and the crossbeam slider 302 is slidably mounted on the slide rail 303.

[0013] The slide rail 303 has an inclination, and the upper end of the slide rail 303 is inclined toward the paper pushing roller mechanism 6 .

[0014] An arc roller 4 for paper feeding is arranged between the front and rear bottom roller mechanisms 9 and the longitudinal cutting mechanism 2. The arc roller 4 includes an elliptical roller I 401 and an elliptical roller II 402. The elliptical roller I 401 and the elliptical roller II 402 are respectively located on both sides of the paper.

[0015] The front and rear bottom roller mechanism 9 includes a rear bottom roller 901 and a front bottom roller 902. The center of the front bottom roller 902 is higher than the center of the rear bottom roller 901. The rear bottom roller 901 is a vacuum roller and has exhaust holes on its surface.

[0016] The paper unwinding mechanism 1 includes a rotating shaft 101 sleeved in the middle of the mother roll, and a correction mechanism is arranged at the end of the rotating shaft 101. The correction mechanism includes a hydraulic cylinder I 102 installed on the paper unwinding mechanism 1, and the piston rod of the hydraulic cylinder I 102 is hinged with a fisheye joint 103, and the fisheye joint 103 is sleeved on the rotating shaft 101.

[0017] It also includes a paper unloading mechanism 11, which includes a side plate 1101 and an arc-shaped support plate 1102. The side plate 1101 and the arc-shaped support plate 1102 form a cavity for receiving the paper roll. One end of the arc-shaped support plate 1102 close to the front and rear bottom roller mechanisms 9 is hinged with a piston rod of a hydraulic cylinder VI 1103, and the other end of the hydraulic cylinder VI 1103 is fixedly mounted on the frame 10.

[0018] The guide roller surface of the paper guide roller mechanism 13 is provided with grooves for stretching the paper, and the grooves are spirally shaped as a whole, and the grooves are spirally spread out along the axial direction of the guide roller from the radial center line of the guide roller as a starting point to both sides.

[0019] The paper core pushing mechanism 5 is respectively arranged at both ends of the paper core, and the paper core pushing mechanism 5 includes a paper core pushing roller 507 that is clamped with the end of the paper core, and an encoder 503 is installed in the end of the paper core pushing roller 507 close to the paper core, and a paper core pushing slider 502, a connecting seat I 508 and a connecting seat II 510 are sequentially sleeved outward on the outer edge of the paper core pushing roller 507 close to the end of the paper core, and the paper core pushing roller 507 is rotatably connected with the connecting seat I 508 and the connecting seat II 510 through bearings. A connecting rod 509 is fixedly connected between 8 and the connecting seat II 510, and a hydraulic cylinder II 501 parallel to the paper core is fixedly installed on the top paper core slider 502, one side of the connecting seat I 508 extends outward and is fixedly installed on the piston rod of the hydraulic cylinder II 501, and a hydraulic cylinder XII 504 perpendicular to the hydraulic cylinder II 501 is also fixedly installed on the side of the top paper core slider 502, and the top paper core slider 502 is slidably installed on the frame 10, and the hydraulic cylinder XII 504 drives the top paper core slider 502 to slide on the frame 10.

[0020] A paper cutting mechanism 8 is arranged at the lower middle part of the front and rear bottom roller mechanisms 9, and the paper cutting mechanism 8 comprises a paper cutting knife 804 of the same width as the front and rear bottom roller mechanisms 9, and the paper cutting knife 804 is located at the lower middle part of the front and rear bottom roller mechanisms 9 with the tip of the knife facing upwards, and the bottoms of both ends of the paper cutting knife 804 are respectively fixedly connected with fixed seats 802, and the bottom end of the fixed seat 802 is hinged with the piston rod of the hydraulic cylinder V801, and the other end of the hydraulic cylinder V801 is fixedly mounted on the frame 10, and the inner side surface of the fixed seat 802 is fixed with a support II807, and the outer side of the upper end of the fixed seat 802 is fixed with a support I806, and the support I806 is hinged with a cylinder I805, and the piston rod of the cylinder I805 faces upwards and is hinged with a paper pressing wheel assembly 803, and the other end of the paper pressing wheel assembly 803 is hinged on the support II807.

[0021] The paper pressing wheel assembly 803 comprises a paper pressing wheel fixing frame, a front roller and a rear roller. The front roller and the rear roller are respectively mounted on the paper pressing wheel fixing frame, and a connecting belt is sleeved on the front roller and the rear roller.

[0022] Compared with the prior art, the present invention does not require manual placement of paper cores, and realizes the automation of paper core roll replacement. After the paper core roll replacement is completed, it is only necessary to manually stick the paper head to the paper core. The operation is simple and the roll replacement time is short, which greatly reduces the labor intensity of workers and improves work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a front view of the rewinding machine of the present invention.

[0024] Figure 2 It is a top view of the rewinding machine of the present invention.

[0025] Figure 3 It is a structural schematic diagram of the paper core placing mechanism.

[0026] Figure 4 It is a structural diagram of the paper feeding core mechanism.

[0027] Figure 5 It is a structural schematic diagram of the paper pressing core mechanism.

[0028] Figure 6 It is the front view of the paper core top mechanism.

[0029] Figure 7 yes Figure 6 A-direction view.

[0030] Figure 8 yes Figure 6 B view.

[0031] Fig. 9 It is a structural schematic diagram of the paper breaking mechanism.

[0032] Fig.10 yes Fig. 9 The top view without the rear bottom roller and the front bottom roller.

[0033] Among them, 1 is the paper unwinding mechanism, 101 is the rotating shaft, 102 is the hydraulic cylinder I, 103 is the fisheye joint; 2 is the longitudinal cutting mechanism; 3 is the paper pressing roller mechanism, 301 is the hydraulic cylinder II, 302 is the beam slider, 303 is the slide rail, 304 is the paper pressing roller; 4 is the arc roller, 401 is the elliptical roller I, 402 is the elliptical roller II; 5 is the paper core pushing mechanism, 501 is the hydraulic cylinder II, 502 is the paper core pushing slider, 503 is the encoder, 504 is hydraulic cylinder XII, 505 is a clamping joint, 506 is a guide rail, 507 is a paper core roller, 508 is a connecting seat I, 509 is a connecting rod, 510 is a connecting seat II; 6 is a paper pushing roller mechanism, 601 is a pushing roller bracket, 602 is a hydraulic cylinder III, 603 is a hydraulic cylinder IV; 7 is a paper core placing mechanism, 701 is a rotating arm, 702 is a clamping cylinder, 703 is a clamping arm, 704 is a paper core supporting plate, and 705 is a hinged shaft;

[0034] 8 is a paper cutting mechanism, 801 is a hydraulic cylinder V, 802 is a fixed seat, 803 is a paper pressing wheel assembly, 804 is a paper cutting knife, 805 is a cylinder I, 806 is a support I, and 807 is a support II; 9 is a front and rear bottom roller mechanism, 901 is a rear bottom roller, and 902 is a front bottom roller;

[0035] 10 is a frame, 1001 is a column I, 1002 is a bracket I, 1003 is a supporting frame; 11 is a paper unloading mechanism, 1101 is a side plate, 1102 is an arc-shaped support plate, 1103 is a hydraulic cylinder VI; 12 is a paper feeding core mechanism, 1201 is a paper core platform, 1202 is a paper core remover, 1203 is a bracket II, 1204 is a cylinder II, 1205 is a slide, 1206 is a push rod, 1207 is a pushing mechanism, 1208 is a column II; 13 is a paper guide roller mechanism; 14 is a mother roll; 15 is a paper core. DETAILED DESCRIPTION

[0036] like Figure 1 , Figure 3 , Figure 4 As shown, an automatic paper core placing device includes a paper core feeding mechanism 12, which includes an obliquely arranged paper core platform 1201, a paper core shifter 1202 with a pit on the upper end surface (not marked in the figure) is arranged on the outer side of the lowest part of the paper core platform 1201, a slideway 1205 with a depression on the upper end surface (not marked in the figure) is arranged on the outer side of the paper core shifter 1202 away from the paper core platform 1201, a channel (not marked in the figure) is opened in the middle of the depression of the slideway 1205, and a push rod 1206 is arranged in the channel, and the push rod 1206 is driven by a pushing mechanism 1207; the end of the paper core shifter 1202 close to the paper core platform 1201 is hinged and fixed, and the end of the paper core shifter 1202 away from the paper core platform 1201 is hinged with a vertically arranged cylinder II 1204, and the height of the hinged fixed end of the paper core shifter 1202 is higher than the height of the end point of the slideway 1205 close to the paper core shifter 1202.

[0037] The paper core shifter 1202 extends along its hinged fixed end toward the paper core platform 1201, and the extended end is preferably fan-shaped, so as to block the paper core without damaging it. The push rod 1206 is located on the side of the slide 1205 away from the paper pushing roller mechanism 6, and the slide 1205 and the pushing mechanism 1207 are both fixedly mounted on the column II 1208 of the frame 10. The paper core shifter 1202 is hingedly fixed on the bracket II 1203, and the bracket II 1203 is fixedly mounted on the frame 10. The paper cores are neatly placed on the paper core platform 1201 according to the paper roll slitting specifications, and 15 to 20 sets of paper cores can be placed on the paper core platform 1201.

[0038] When the paper core feeding mechanism 12 is working, that is, when the paper core needs to be transported, the cylinder II 1204 pushes one end of the paper core shifter 1202 upward to make the paper core shifter 1202 rotate upward with its hinged fixed position as the center, until the upper surface of one end of the paper core shifter 1202 close to the paper core platform 1201 is connected with the paper core platform 1201, so that the paper core can fall into the pit of the paper core shifter 1202; then the cylinder II 1204 pulls one end of the paper core shifter 1202 downward to make the paper core shifter 1202 rotate downward with its hinged fixed position as the center, until one end of the paper core shifter 1202 close to the slide 1205 is connected with the slide 1205, so that the paper core naturally falls into the depression of the slide 1205 under the action of the height difference, and at this time the push rod 1206 is located on the outside of the paper core. Then, the pushing mechanism 1207 drives the push rod 1206 to move in the channel of the slideway 1205, thereby pushing the paper core to move toward the paper pushing roller mechanism 6.

[0039] like Figure 3 As shown, in order to receive the paper core transported by the paper core feeding mechanism 12, a paper core placing mechanism 7 installed at the bottom of the paper pushing roller mechanism 6 is provided on the side of the paper core feeding mechanism 12. The paper core placing mechanism 7 includes a paper core support plate 704 fixedly mounted on the outer side of the bottom of the paper pushing roller mechanism 6, and an L-shaped clamping arm 703 is fixedly mounted on the inner side edge of the paper core support plate 704. The paper core support plate 704 and the L-shaped clamping arm 703 form a semi-open drawer (not marked in the figure) for placing the paper core, and the semi-open drawer is connected to the slide 1205.

[0040] In order to realize automatic placement of the paper core on the front and rear bottom roller mechanisms 9, the paper core placement mechanism 7 also includes a rotating arm 701 hinged on the outer side of the bottom of the paper pushing roller mechanism 6, the rotating arm 701 extends above the paper core support plate 704, and a clamping cylinder 702 is fixedly installed at the extended end of the rotating arm 701, and the piston rod of the clamping cylinder 702 is hinged to the piston rod of the hydraulic cylinder IV 603. Figure 1 The clamping cylinder 702 is not shown, and the other end of the hydraulic cylinder IV603 is hinged on the paper pushing roller mechanism 6; the piston rod of the hydraulic cylinder IV603 is aligned with the paper core inlet of the paper core support plate 704. The rotating arm 701 and the clamping cylinder 702 together with the clamping arm 703 and the paper core support plate 704 clamp and fix the paper core.

[0041] The working process of the paper core placing mechanism 7 is as follows: the paper core naturally falls from the slideway 1205 of the paper core feeding mechanism 12 into the semi-open drawer formed by the paper core support plate 704 and the clamp arm 703, then the piston rod of the clamping cylinder 702 extends, the hydraulic cylinder IV 603 adaptively rotates with its hinge as the center, and the piston rod of the clamping cylinder 702 extends a distance until the clamping cylinder 702, the clamp arm 703, and the paper core support plate 704 just clamp and fix the paper core. When the paper pushing roller mechanism 6 drives the paper core placing mechanism 7 to the top of the front and rear bottom roller mechanisms 9, the piston rod of the clamping cylinder 702 shortens back until the paper core is out of the clamping state and naturally falls onto the front and rear bottom roller mechanisms 9.

[0042] Preferably, the pushing mechanism 1207 includes a synchronous belt (not marked in the figure) and a synchronous pulley (not marked in the figure), the synchronous pulley is driven by a reduction motor (not marked in the figure), the conveying direction of the synchronous belt is parallel to the axial direction of the slideway 1205, and the synchronous belt is fixedly connected to the push rod 1206 in the middle of the slideway 1205 by a crossbar and screws. There are two synchronous pulleys, the outer shells of the two synchronous pulleys are connected to the synchronous belt, and the driving pulleys of the two synchronous pulleys are fixedly connected to the output shaft of the reduction motor.

[0043] Preferably, the upper end surface of the pit of the paper core moving device 1202 and the upper end surface of the depression of the slideway 1205 are both V-shaped, which makes it easier for the paper core to roll naturally on the plane.

[0044] The present invention also provides a rewinding machine, such as Figure 1 As shown, it includes the automatic paper core placing device, and also includes a frame 10, a paper unloading mechanism 1, a paper guide roller mechanism 13, a longitudinal cutting mechanism 2, a front and rear bottom roller mechanism 9, a paper pressing roller mechanism 3, a paper core pushing mechanism 5 and a paper pushing roller mechanism 6. The above-mentioned paper pushing roller mechanism 6 includes a pushing roller bracket 601, the inner side surface of which is close to the paper core and is roughly arc-shaped, the top end of the pushing roller bracket 601 is hinged on the frame 10, and the middle part of the upper section thereof is hinged with a piston rod of a hydraulic cylinder III 602, and the other end of the hydraulic cylinder III 602 is fixedly mounted on the frame 10; the above-mentioned paper unloading mechanism 1, the front and rear bottom roller mechanism 9, the paper guide roller mechanism 13, the longitudinal cutting mechanism 2, and the paper pushing roller mechanism 6 are all existing technologies and will not be repeated here.

[0045] Furthermore, if Figure 5 As shown, the paper pressing roller mechanism 3 includes a hydraulic cylinder II 301 fixedly mounted on the frame 10, the piston rod of the hydraulic cylinder II 301 faces downward and a crossbeam slider 302 is fixedly mounted on the end of the piston rod, a paper pressing roller 304 is fixedly mounted on the bottom of the crossbeam slider 302, a top-down slide rail 303 is arranged on the side of the crossbeam slider 302, and the crossbeam slider 302 is slidably mounted on the slide rail 303.

[0046] In order to shift the center of gravity of the paper core inward to prevent the paper core from flying out and causing harm when rolling paper, the slide rail 303 is inclined, and the upper end of the slide rail 303 is inclined toward the paper pushing roller mechanism 6, so that the paper pressing roller 304 will apply an inward force to the paper core to change the center of gravity of the paper core.

[0047] In order to improve the stretching effect of the paper when the paper thickness is not uniform, an arc roller 4 for paper feeding is arranged between the front and rear bottom roller mechanisms 9 and the longitudinal cutting mechanism 2. The arc roller 4 includes an elliptical roller I 401 and an elliptical roller II 402. The elliptical roller I 401 and the elliptical roller II 402 are respectively located on both sides of the paper. This is because the traditional rewinding machine generally has an arc roller or uses a round roller. This structure has a good stretching effect when the paper thickness is uniform, but when the paper thickness is not uniform, the effect is very poor, the paper will be folded, the rolled paper roll will have a bite edge, and the paper roll cannot be separated after it is pushed out. The arc roller 4 of the present invention rotates with the rotation of the paper, and the irregular arc roller 4 is used to apply different stretching forces to the paper when it rotates, and the elliptical roller I 401 and the elliptical roller II 402 stretch the two sides of the paper respectively.

[0048] In order to better prevent the center of the paper core from deviating outward and flying out when the paper core is rolled, the front and rear bottom roller mechanism 9 includes a rear bottom roller 901 and a front bottom roller 902. The center of the front bottom roller 902 is higher than the center of the rear bottom roller 901. The rear bottom roller 901 is a vacuum roller and has an exhaust hole on its surface. The vacuum roller makes it easy for the paper to be attached to the rear bottom roller 901. Then the bottom roller 901 rotates to enter the inner side of the paper core, that is, Figure 1 The right side of the paper core is then stopped, and the paper head is manually glued to the inner side of the paper core, and then rewinding is performed.

[0049] In order to prevent the paper from being broken or damaged due to the different tensions of the paper on both sides when the mother roll is unrolled due to its large width, the paper unwinding mechanism 1 includes a rotating shaft 101 sleeved in the middle of the mother roll (not shown in the figure), and a deviation correction mechanism is arranged at the end of the rotating shaft 101. The deviation correction mechanism includes a hydraulic cylinder I 102 installed on the paper unwinding mechanism 1, and the piston rod of the hydraulic cylinder I 102 is hinged with a fisheye joint 103, and the fisheye part of the fisheye joint 103 is sleeved on the rotating shaft 101. The rod part of the fisheye joint 103 is horizontally opened with a hole, and a hinge shaft is passed through the hole, and the hinge shaft is hinged to the piston rod of the hydraulic cylinder I 102. When the tension of the paper at the end of the mother roll with the deviation correction mechanism is too large, the hydraulic cylinder I 102 pulls the rotating shaft 101 inward through the fisheye joint 103 to balance the tension. Conversely, the hydraulic cylinder I 102 pushes the rotating shaft 101 outward through the fisheye joint 103.

[0050] In order to facilitate automatic unloading of paper rolls, a paper unloading mechanism 11 is also included, which includes a side plate 1101 and an arc-shaped support plate 1102. The side plate 1101 and the arc-shaped support plate 1102 form a cavity for receiving the paper roll. The end of the arc-shaped support plate 1102 close to the front and rear bottom roller mechanisms 9 is hinged with a piston rod of a hydraulic cylinder VI 1103, and the other end of the hydraulic cylinder VI 1103 is fixedly mounted on the frame 10. The arc-shaped support plate 1102 is fixedly mounted on the side plate 1101, and the bottom end of the side plate 1101 is hinged on the frame 10. During operation, the paper pushing roller mechanism 6 pushes the paper roll from the front and rear bottom roller mechanisms 9, so that the paper roll enters the cavity formed by the side plate 1101 and the arc-shaped support plate 1102, and the hydraulic cylinder VI 1103 gradually retracts, driving the side plate 1101 and the arc-shaped support plate 1102 to rotate around the hinge point at the bottom end of the side plate 1101 until they touch the ground, thereby completing the paper unloading work.

[0051] In order to better stretch the paper, the guide roller surface of the paper guide roller mechanism 13 has grooves for stretching the paper. The grooves are spiral in shape, and the grooves start from the radial center line of the guide roller and spirally expand toward both sides along the axial direction of the guide roller.

[0052] In order to make it easier for the paper core to roll up without displacement in the horizontal direction and only rotate, and to adapt to the upward movement of the central axis as the thickness of the paper roll increases, such as Figure 6 , Figure 7 , Figure 8 As shown, the paper core pushing mechanism 5 is respectively arranged at both ends of the paper core. The paper core described in the present invention is a paper core tube. The paper core pushing mechanism 5 includes a paper core pushing roller 507 that is clamped with the end of the paper core. An encoder 503 is installed in the end of the paper core pushing roller 507 close to the paper core. The outer edge of the paper core pushing roller 507 close to the end of the paper core is sequentially sleeved with a paper core pushing slider 502, a connecting seat I 508 and a connecting seat II 510. The paper core pushing roller 507 is rotatably connected to the connecting seat I 508 and the connecting seat II 510 through bearings. A connecting rod 509 is fixedly connected between the connecting seat Ⅰ508 and the connecting seat Ⅱ510, and a hydraulic cylinder Ⅱ501 parallel to the paper core is fixedly installed on the top paper core slider 502, one side of the connecting seat Ⅰ508 extends outward and is fixedly installed on the piston rod of the hydraulic cylinder Ⅱ501, and a hydraulic cylinder Ⅻ504 perpendicular to the hydraulic cylinder Ⅱ501 is also fixedly installed on the side of the top paper core slider 502, and the top paper core slider 502 is slidably installed on the frame 10, and the hydraulic cylinder Ⅻ504 drives the top paper core slider 502 to slide on the frame 10.

[0053] The frame 10 includes a support frame 1003, on which a guide rail 506 is arranged, and the paper core top slider 502 is slidably mounted on the guide rail 506 through two mounting seats (not shown in the figure). The end of the paper core top roller 507 close to the paper core is a cylindrical clamping joint 505, the radial dimension of the clamping joint 505 is smaller than the radial dimension of the adjacent encoder 503 housing, the radial dimension of the clamping joint 505 is slightly smaller than the inner diameter of the paper core, and the radial dimension of the encoder 503 housing is larger than the inner diameter of the paper core, so that the clamping joint 505 extends into the center hole of the paper core during installation, and the encoder 503 housing just contacts the side wall of the paper core for clamping.

[0054] The encoder of the traditional rewinding machine is installed on the end of the rotor shaft of the rear bottom roller 901 transmission motor, and the length of the paper roll is calculated by detecting the number of rotations of the rear bottom roller 901. This method has errors in the detection data. The structure of the present invention can detect the length of the paper roll more accurately.

[0055] The working process of the paper core push mechanism 5 is as follows: first, according to the axial length of the paper core, the piston rod of the hydraulic cylinder II 501 is adjusted until it extends to a suitable position, and the paper core push roller 507 is fixed at a certain position, so that the paper core push roller 507 forms a limit on the end of the paper core to prevent the paper core from moving in the horizontal direction when the paper is rolled. Then, after the machine is turned on, the paper core rotates, and at the same time, the paper core drives the paper core push roller 507 to rotate. The encoder 503 converts the length of the paper roll according to the number of rotations of the paper core. As the thickness of the paper rolled on the paper core gradually increases, the central axis of the paper core gradually moves upward, and the paper core push roller 507 also moves upward gradually. At the same time, the piston rod of the hydraulic cylinder XII 504 gradually retracts upward, and the paper core push slider 502 slides upward along the guide rail 506, gradually reaching the maximum thickness of the rolled paper, that is, Figure 7 The position is indicated by the dotted line in .

[0056] In order to realize automatic paper breaking, a paper breaking mechanism 8 is arranged at the lower middle part of the front and rear bottom roller mechanisms 9. Fig. 9 , Fig.10 As shown, the paper cutting mechanism 8 includes a paper cutting knife 804 of the same width as the front and rear bottom roller mechanisms 9, the paper cutting knife 804 is located below the middle of the front and rear bottom roller mechanisms 9 and the tip of the knife faces upward, the bottom of both ends of the paper cutting knife 804 are respectively fixedly connected with a fixed seat 802, the bottom end of the fixed seat 802 is hinged with a piston rod of a hydraulic cylinder V801, the other end of the hydraulic cylinder V801 is fixedly mounted on the frame 10, the inner side of the fixed seat 802 is fixedly mounted with a support II807, the outer side of the upper end of the fixed seat 802 is fixedly mounted with a support I806, the support I806 is hinged with a cylinder I805, the piston rod of the cylinder I805 faces upward and is hinged with a paper pressing wheel assembly 803, the other end of the paper pressing wheel assembly 803 is hinged on the support II807. The above-mentioned paper cutting knife 804 is an arc as a whole, and its curvature is consistent with the curvature of the inner side of the rear bottom roller 901 of the rewinder.

[0057] Furthermore, if Fig. 9, Fig.10 As shown, the pressing wheel assembly 803 includes a pressing wheel fixing frame (not marked in the figure), a front roller (not marked in the figure) and a rear roller (not marked in the figure), the front roller and the rear roller are respectively mounted on the pressing wheel fixing frame, and the front roller and the rear roller are sleeved with a connecting belt (not marked in the figure). The connecting belt is used to press the paper tightly onto the rear bottom roller 901, and the paper will not be damaged.

[0058] The working process of the paper cutting mechanism 8 is as follows: when the rewinding is completed and the paper needs to be cut, the fixed seat 802 is pushed forward by the hydraulic cylinder V801, and the fixed seat 802 rotates around the hinge point of the support I806 and the roller shaft of the rear bottom roller 901. At this time, the paper cutting knife 804 rotates synchronously with the fixed seat 802 to between the rear bottom roller 901 and the front bottom roller 902 and close to the rear bottom roller 901, that is, it is located at the paper cutting position. Fig. 9 As shown, the rear end of the pressing wheel assembly 803 rotates synchronously with the fixed seat 802, and at the same time, the cylinder I 805 pulls the front end of the pressing wheel assembly 803 to rotate the pressing wheel assembly 803 around the hinge point between its rear end and the support II 807, until the connecting belt of the pressing wheel assembly 803 presses the paper on the rear bottom roller 901, and then the paper roll is quickly pushed out, that is, from Figure 1 The right side of the paper is pushed to the left side and separated from the rear bottom roller 901. At this time, the paper is cut by the paper cutting knife 804, thereby completing the paper cutting work.

[0059] The working process of the present invention is as follows:

[0060] The mother roll, i.e., the paper roll to be processed, is hung on the paper unwinding mechanism 1, the equipment is started, and set to the paper feeding mode. The paper core is sent between the rear bottom roller 901 and the front bottom roller 902 through the automatic paper core placing device and the paper pushing roller mechanism 6, and then the two ends of the paper core are respectively connected with the top paper core mechanism 5, and the top paper core mechanism 5 is adjusted. Then, the paper head of the paper sheet is pulled out (from the upper and lower sides of the paper roll) and passes through the paper guide roller mechanism 13, the longitudinal cutting mechanism 2, the arc roller 4 and the bottom of the front and rear bottom roller mechanisms 9 in sequence. When the paper sheet passes through the rear bottom roller 901 in the front and rear bottom roller mechanisms 9, it is sucked by the exhaust hole of the rear bottom roller 901, and the paper sheet is brought to the upper side of the inner side of the paper core. Then, the paper head of the paper sheet is manually glued to the paper core, the paper pressing roller mechanism 3 is started to press the paper core, and then the pneumatic upper circular knife on the longitudinal cutting mechanism 2 is adjusted to the predetermined finished paper roll degree and fixed. At this point, all auxiliary work before starting is completed.

[0061] The variable frequency speed regulating motor driving the front and rear bottom roller mechanisms 9 is turned on to drive the front and rear bottom roller mechanisms 9 to operate. The front and rear bottom roller mechanisms 9 drive the paper core to rotate counterclockwise, and the rear bottom roller 901 and the front bottom roller 902 both rotate clockwise to rewind the paper. When the diameter of the rewound paper roll reaches the specified value, the variable frequency speed regulating motor is turned off, the paper pressing roller mechanism 3 is lifted, and the hydraulic cylinder II501 of the top paper core mechanism 5 is adjusted to make the clamping joint 505 of the top paper core roller 507 detach from the paper core, and then the paper unloading mechanism 11 is turned over to the paper receiving position, the paper breaking mechanism 8 is lifted, and the paper pushing roller mechanism 6 is started to push the paper roll from the front and rear bottom roller mechanisms 9 to the paper unloading mechanism 11; then the paper feeding core mechanism 12 and the paper placing core mechanism 7 are started, and the paper core is placed in the middle of the front and rear bottom roller mechanisms 9, and the paper pushing roller mechanism 6 is retracted, and then the paper unloading mechanism 11 is turned over to place the paper roll on the ground, thus completing the complete working cycle of rewinding.

[0062] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several changes and improvements can be made without departing from the overall concept of the present invention. These should also be regarded as the scope of protection of the present invention. These will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A rewinding machine, characterized in that: The invention comprises an automatic paper core placing device, the automatic paper core placing device comprises a paper core feeding mechanism (12), the paper core feeding mechanism (12) comprises a paper core platform (1201) arranged obliquely, a paper core shifter (1202) having a concave upper end surface is arranged on the outer side of the lowest part of the paper core platform (1201), a slideway (1205) having a concave upper end surface is arranged on the outer side of the paper core shifter (1202) away from the paper core platform (1201), a channel is opened in the middle of the concave part of the slideway (1205), and the channel A push rod (1206) is arranged inside, and the push rod (1206) is driven by a pushing mechanism (1207); one end of the paper core mover (1202) close to the paper core platform (1201) is hinged and fixed, and one end of the paper core mover (1202) away from the paper core platform (1201) is hinged with a vertically arranged cylinder II (1204), and the height of the hinged fixed end of the paper core mover (1202) is higher than the height of the end point of the slideway (1205) close to the paper core mover (1202); The side of the paper feeding core mechanism (12) is provided with a paper core placing mechanism (7) installed at the bottom of the paper pushing roller mechanism (6), the paper core placing mechanism (7) comprising a paper core supporting plate (704) fixedly mounted on the outer side of the bottom of the paper pushing roller mechanism (6), an L-shaped clamping arm (703) fixedly mounted on the inner side of the paper core supporting plate (704), the paper core supporting plate (704) and the L-shaped clamping arm (703) forming a semi-open drawer for placing paper cores, and the semi-open drawer is connected to the slideway (1205); The paper core placing mechanism (7) further comprises a rotating arm (701) hingedly connected to the outer side of the bottom of the paper pushing roller mechanism (6); the rotating arm (701) extends above the paper core supporting plate (704); a clamping cylinder (702) is fixedly mounted on the extended end of the rotating arm (701); a piston rod of the clamping cylinder (702) is hingedly connected to a piston rod of a hydraulic cylinder IV (603); the other end of the hydraulic cylinder IV (603) is hingedly connected to the paper pushing roller mechanism (6); the piston rod of the hydraulic cylinder IV (603) is aligned with the paper core inlet of the paper core supporting plate (704); It also includes a frame (10), a paper unwinding mechanism (1), a paper guide roller mechanism (13), a longitudinal cutting mechanism (2), front and rear bottom roller mechanisms (9), a paper pressing roller mechanism (3), a paper core pushing mechanism (5) and a paper pushing roller mechanism (6); the paper pressing roller mechanism (3) includes a hydraulic cylinder II (301) fixedly mounted on the frame (10); the piston rod of the hydraulic cylinder II (301) faces downward and a crossbeam slider (302) is fixedly mounted on the end of the piston rod; a paper pressing roller (304) is fixedly mounted on the bottom of the crossbeam slider (302); a slide rail (303) extending from top to bottom is arranged on the side of the crossbeam slider (302); the crossbeam slider (302) is slidably mounted on the slide rail (303); the slide rail (303) has an inclination, and the upper end of the slide rail (303) is inclined toward the side of the paper pushing roller mechanism (6); The front and rear bottom roller mechanism (9) comprises a rear bottom roller (901) and a front bottom roller (902), and the center of the front bottom roller (902) is higher than the center of the rear bottom roller (901).

2. The rewinding machine according to claim 1, characterized in that: The pushing mechanism (1207) comprises a synchronous belt and a synchronous pulley, the synchronous pulley is driven by a reduction motor, the conveying direction of the synchronous belt is parallel to the axial direction of the slideway (1205), and the synchronous belt is fixedly connected to a push rod (1206) in the middle of the slideway (1205).

3. The rewinding machine according to claim 1, characterized in that: The upper end surface of the concave pit of the paper core moving device (1202) and the upper end surface of the concave depression of the slideway (1205) are both V-shaped.

4. The rewinding machine according to claim 1, characterized in that: An arc roller (4) for guiding the paper is arranged between the front and rear bottom roller mechanisms (9) and the longitudinal cutting mechanism (2), and the arc roller (4) comprises an elliptical roller I (401) and an elliptical roller II (402), and the elliptical roller I (401) and the elliptical roller II (402) are respectively located on both sides of the paper.

5. The rewinding machine according to claim 1, characterized in that: The rear bottom roller (901) is a vacuum roller and has ventilation holes on its surface.

6. The rewinding machine according to claim 1, characterized in that: The paper unwinding mechanism (1) comprises a rotating shaft (101) sleeved in the middle of the mother roll, a deviation correction mechanism is arranged at the end of the rotating shaft (101), the deviation correction mechanism comprises a hydraulic cylinder I (102) mounted on the paper unwinding mechanism (1), the piston rod of the hydraulic cylinder I (102) is hinged with a fisheye joint (103), and the fisheye joint (103) is sleeved on the rotating shaft (101).

7. The rewinding machine according to claim 1, characterized in that: The machine also comprises a paper unloading mechanism (11), the paper unloading mechanism (11) comprising a side plate (1101) and an arc-shaped support plate (1102), the side plate (1101) and the arc-shaped support plate (1102) forming a cavity for receiving a paper roll, one end of the arc-shaped support plate (1102) close to the front and rear bottom roller mechanisms (9) is hingedly connected to a piston rod of a hydraulic cylinder VI (1103), and the other end of the hydraulic cylinder VI (1103) is fixedly mounted on the frame (10).

8. The rewinding machine according to claim 1, characterized in that: The guide roller surface of the paper guide roller mechanism (13) is provided with grooves for stretching paper, the grooves are spirally shaped as a whole, and the grooves are spirally spread out along the axial direction of the guide roller from the radial center line of the guide roller as the starting point to both sides.

9. The rewinding machine according to claim 1, characterized in that: The paper core supporting mechanism (5) is respectively arranged at both ends of the paper core, and comprises a paper core supporting roller (507) clamped with the end of the paper core, an encoder (503) is installed in the end of the paper core supporting roller (507) close to the paper core, and a paper core supporting slider (502), a connecting seat I (508) and a connecting seat II (510) are sequentially sleeved on the outer edge of the paper core supporting roller (507) close to the end of the paper core. The paper core supporting roller (507) is rotatably connected with the connecting seat I (508) and the connecting seat II (510) respectively through bearings, and the connecting seat I (508) is connected to the paper core. A connecting rod (509) is fixedly connected between the paper core pushing slider (502) and the connecting seat II (510); a hydraulic cylinder II (501) parallel to the paper core is fixedly mounted on the paper core pushing slider (502); one side of the connecting seat I (508) extends outward and is fixedly mounted on the piston rod of the hydraulic cylinder II (501); a hydraulic cylinder XII (504) perpendicular to the hydraulic cylinder II (501) is also fixedly mounted on the side of the paper core pushing slider (502); the paper core pushing slider (502) is slidably mounted on the frame (10); and the hydraulic cylinder XII (504) drives the paper core pushing slider (502) to slide on the frame (10).

10. The rewinding machine according to claim 1, characterized in that: A paper cutting mechanism (8) is arranged below the middle of the front and rear bottom roller mechanisms (9), the paper cutting mechanism (8) comprising a paper cutting knife (804) having the same width as the front and rear bottom roller mechanisms (9), the paper cutting knife (804) being located below the middle of the front and rear bottom roller mechanisms (9) with the tip of the knife facing upwards, the bottoms of both ends of the paper cutting knife (804) being respectively fixedly connected to fixed seats (802), the bottoms of the fixed seats (802) being hinged to the piston rod of a hydraulic cylinder V (801), the hydraulic cylinder The other end of V (801) is fixedly mounted on the frame (10), a support II (807) is fixedly mounted on the inner side of the fixed seat (802), a support I (806) is fixedly mounted on the outer side of the upper end of the fixed seat (802), a cylinder I (805) is hingedly connected to the support I (806), a piston rod of the cylinder I (805) faces upward and is hingedly connected to a paper pressing wheel assembly (803), and the other end of the paper pressing wheel assembly (803) is hingedly connected to the support II (807).

11. The rewinding machine according to claim 10, characterized in that: The paper pressing wheel assembly (803) comprises a paper pressing wheel fixing frame, a front roller and a rear roller. The front roller and the rear roller are respectively mounted on the paper pressing wheel fixing frame. The front roller and the rear roller are sleeved with a connecting belt.

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