Telescopic expansion type winding arm structure of splitting machine

Abstract

The utility model discloses a telescopic expansion type winding arm structure of a splitting machine, and aims to provide the telescopic expansion type winding arm structure of the splitting machine, which is good in winding adaptability and stability, capable of meeting the winding requirements of various splitting working conditions and high in winding efficiency. The telescopic expansion type winding arm structure of the splitting machine effectively solves the problem that in the prior art, a winding core shaft of a winding structure is prone to slipping in the winding process. The winding device comprises two winding arms provided with winding chucks, the winding chuck on at least one winding arm is an expansion chuck, and an expansion mechanism is arranged on the winding arm where the expansion chuck is located. The expansion chuck comprises a chuck body rotationally arranged on the winding arm through a driving shaft sleeve and a plurality of expansion blocks arranged on the chuck body in a sliding mode in the radial direction of the driving shaft sleeve. The expansion mechanism comprises an expansion shaft arranged in the driving shaft sleeve in a sliding mode and an expansion driving mechanism driving the expansion shaft to move, a conical driving part is arranged on the expansion shaft, and the expansion blocks surround the conical driving part and abut against the conical driving part.

Description

TECHNICAL FIELD

[0001] The utility model relates to a slitting machine technical field, concretely relates to a slitting machine telescopic expansion winding arm structure. BACKGROUND

[0002] The slitting machine is a kind of slitting equipment for cutting wide-width material into multiple narrow-width materials.During the operation of the slitting machine, the material cut needs to be wound by a winding structure.Currently, the winding structure of the slitting machine generally includes two winding arms provided with winding chucks, and the winding arms are driven to slide by a cylinder.The winding chucks are rotatably arranged on the winding arms, and the winding chucks are driven to rotate by a motor.The winding chucks include a plurality of centrifugal expansion blocks distributed in the circumferential direction.In actual application, the winding chucks on the two winding arms clamp the winding mandrel (the winding mandrel is a hollow structure), and the winding chucks extend into the inner holes at both ends of the winding mandrel.Then, the winding chucks are driven to rotate by the motor.During this process, the centrifugal expansion blocks move outward under the action of centrifugal force and press against the inner wall of the inner hole of the winding mandrel, and the winding mandrel is driven to rotate by the friction force between the centrifugal expansion blocks and the inner hole of the winding mandrel, thereby realizing the winding of the cut material.

[0003] However, the winding structure of the slitting machine has the following disadvantages,

[0004] Firstly, when the slitting machine is in a low-speed winding condition, the rotation speed of the winding chucks driven by the motor is low, and the centrifugal force acting on the centrifugal expansion blocks is small, which makes the friction force between the centrifugal expansion blocks and the inner hole of the winding mandrel small, and thus the winding mandrel is prone to slipping during the winding process, affecting the normal winding of the slitting machine.

[0005] Secondly, when the slitting machine cuts some materials with high strength (such as kraft paper), a large tension needs to be established during the cutting process, which requires a large winding force during the winding process of the winding mandrel.Once the required winding force of the material is greater than the friction force between the centrifugal expansion blocks and the inner hole of the winding mandrel, the winding mandrel will slip.The friction force between the centrifugal expansion blocks and the inner hole of the winding mandrel in the current winding structure depends on the rotation speed of the winding chucks, which is set according to the cutting needs (generally within a certain set range) and cannot be adjusted arbitrarily according to needs.This results in the fact that during the cutting process of the slitting machine for some materials with high strength, the required winding force of the material is often greater than the friction force between the centrifugal expansion blocks and the inner hole of the winding mandrel, which causes the winding mandrel to slip during the winding process, affecting the normal winding of the slitting machine. SUMMARY

[0006] The utility model discloses a kind of expansion and contraction expansion type winding arm structures of slitting machine, including two installation winding chuck's winding arm, at least one winding chuck on winding arm is expansion chuck, expansion chuck is equipped with expansion mechanism on the winding arm,

[0007] The utility model discloses a technical scheme:

[0008] A kind of expansion and contraction expansion type winding arm structures of slitting machine, including two installation winding chuck's winding arm, at least one winding chuck on winding arm is expansion chuck, expansion chuck is equipped with expansion mechanism on the winding arm,

[0009] Expansion chuck includes chuck body and several expansion blocks, chuck body is rotatably arranged on winding arm by drive shaft sleeve, expansion blocks are slidably arranged on chuck body along the radial direction of drive shaft sleeve;

[0010] Expansion mechanism includes expansion shaft and expansion drive mechanism, expansion shaft is slidably arranged in drive shaft sleeve, expansion drive mechanism drives expansion shaft to move, expansion shaft is equipped with conical driving portion, each expansion block is around conical driving portion and abuts with conical driving portion.The expansion and contraction expansion type winding arm structure of slitting machine in the scheme has at least one winding chuck on winding arm as expansion chuck, and expansion chuck is equipped with expansion mechanism on the winding arm, so, expansion drive mechanism can drive expansion shaft and conical driving portion to move, so that each expansion block is expanded to the outside of chuck body by conical driving portion, and expansion block is tightly pressed on the inner wall of the inner hole of winding mandrel.Based on this, when slitting machine is actually used, the pressing force between expansion block and winding mandrel inner hole can be controlled by expansion drive mechanism (not affected by the speed of winding chuck), so that sufficient friction between expansion block and winding mandrel inner hole is ensured, so that it can be applied to various winding speed (including low-speed winding condition) winding condition application, and it can be applied to various different strength materials (including materials with high strength) winding condition application, with good winding adaptability and stability, can adapt to various different slitting conditions winding needs, effectively solve the problem that winding structure in prior art is prone to winding mandrel slip during winding process, and affect normal winding of slitting machine.

[0011] As preferred, the expansion driving mechanism comprises a cylinder arranged on the winding arm, a piston slidingly arranged in the cylinder, and a reset spring, the expansion shaft is rotationally connected with the piston, and the reset spring drives the piston and the expansion shaft to reset, so that the expansion shaft can move into the chuck body. In this way, the piston and the expansion shaft can be driven to move by inputting a gas source with a set pressure into the inner cavity of the cylinder, so that the expansion blocks are driven to expand out of the chuck body by the conical driving part, and the expansion blocks are tightly pressed against the inner wall of the inner hole of the winding mandrel; and the pressure of the expansion blocks tightly pressed against the inner wall of the inner hole of the winding mandrel can be controlled by controlling the pressure of the pressure gas source input into the cylinder. When the winding is completed, the pressure gas source in the cylinder can be released, the piston and the expansion shaft are driven to reset by the reset spring, so that the expansion shaft moves into the chuck body, so as to release the expansion connection between the expansion chuck and the winding mandrel.

[0012] As preferred, the chuck body and the cylinder are distributed on opposite sides of the winding arm, one end of the cylinder towards the winding arm is open, the other end of the cylinder is closed, and the piston abuts against the closed end of the cylinder under the action of the reset spring. In this way, on the one hand, it is beneficial to the actual installation and arrangement of the chuck body and the cylinder; on the other hand, the one end of the cylinder towards the winding arm is open, so that the piston can reduce the size of the cylinder in the axial direction under the same stroke (maximum stroke), which is beneficial to improve the compactness of the structure and realize smaller installation space; especially in the multi-winding station working condition (each winding station is distributed side by side), the overall winding width of the slitting machine can be effectively reduced.

[0013] As preferred, the outer side wall of the cylinder is provided with a gas supply interface in communication with the inner cavity of the cylinder, the piston is provided with a protruding part protruding towards the closed end of the cylinder, and when the protruding part of the piston abuts against the closed end of the cylinder, the part of the gas supply interface in communication with the inner cavity of the cylinder is located between the piston and the closed end of the cylinder. In this way, the gas supply interface can be arranged on the outer side wall of the cylinder without affecting the normal work of the expansion driving mechanism, and the space in the side direction of the cylinder is used to install the gas supply pipeline, so as to further reduce the installation space in the axial direction of the cylinder, especially in the multi-winding station working condition (each winding station is distributed side by side), the overall winding width of the slitting machine can be effectively reduced.

[0014] As preferred, the winding arm is provided with a shaft sleeve mounting through hole, the driving shaft sleeve is rotatably arranged in the shaft sleeve mounting through hole through a bearing, the outer wall of the cylinder body is provided with an annular boss, and the one end of the cylinder body is open and extends into the shaft sleeve mounting through hole, the annular boss is abutted on the outer side of the winding arm and connected with the winding arm through bolts. In this way, on the one hand, the installation of the cylinder body is facilitated; on the other hand, the one end of the cylinder body is open and extends into the shaft sleeve mounting through hole, not only the cylinder body can be positioned, but also part of the cylinder body structure can be accommodated in the space in the shaft sleeve mounting through hole, so that the structural compactness is further improved, and the installation space in the axial direction of the cylinder body is reduced, especially in the multiple winding station working condition (the winding stations are distributed side by side), the overall winding width of the slitting machine can be effectively reduced.

[0015] As preferred, the piston is provided with a mounting groove at the end facing the expansion shaft, the expansion shaft is provided with a bearing seat at the end facing the piston, the bearing seat is located in the mounting groove, and the bearing seat and the mounting groove are connected through a bearing. In this way, the rotation between the expansion shaft and the piston can be smoothly ensured, and the bearing seat and the bearing at the end of the expansion shaft are accommodated in the mounting groove on the piston, so that the structure is compact, and the installation space in the axial direction of the cylinder body can be reduced.

[0016] As preferred, the expansion chuck further comprises an elastic rubber sleeve sleeved outside the chuck body, each expansion block is located inside the elastic rubber sleeve, and the expansion block moves into the chuck body and abuts on the tapered driving part under the action of the elastic rubber sleeve. During the driving of each expansion block to expand out of the chuck body by the tapered driving part, each expansion block is tightly pressed against the inner wall of the inner hole of the winding mandrel through the elastic rubber sleeve, so that the friction between the expansion chuck and the inner hole of the winding mandrel can be further improved, and slipping between the expansion chuck and the winding mandrel can be avoided. On the other hand, after the expansion shaft is reset, the expansion block can move into the chuck body and abut on the tapered driving part under the action of the elastic rubber sleeve, so as to release the expansion connection between the expansion chuck and the winding mandrel.

[0017] As preferred, the winding arm where the expansion chuck is located is provided with a rotary driving mechanism, and the rotary driving mechanism comprises a chuck motor, and the chuck motor drives the driving shaft sleeve to rotate through a transmission mechanism.

[0018] As preferred, a translation driving mechanism is further included, the two winding arms are slidingly connected to the rack of the slitting machine, the translation driving mechanism corresponds to the winding arm one by one, and the translation driving mechanism drives the corresponding winding arm to move. In this way, the corresponding winding arm can be driven to move by the translation driving mechanism, so that the winding chucks on the two winding arms can clamp the winding mandrel.

[0019] As preferred, the rack of the slitting machine is provided with a rack, the rack is parallel to the sliding direction of the winding arm, the translation driving mechanism comprises a driving gear engaged with the rack and a translation motor driving the driving gear to rotate, and the translation motor and the driving gear are arranged on the winding arm.

[0020] The utility model discloses the beneficial effect is: winding adaptability and stability are good, can adapt to the winding need of various different slitting working condition, effectively solve the winding structure in the winding process of prior art and easily appear winding mandrel slip, and the problem of the normal winding of slitting machine is influenced. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a structure schematic view of a slitting machine telescopic inflation type winding arm structure of the utility model.

[0022] Figure 2 It is a side view of a slitting machine telescopic inflation type winding arm structure of the utility model.

[0023] Figure 3 It is Figure 1 It is a partial enlarged view of A in the middle.

[0024] Figure 4 It is a partial structure schematic view of a slitting machine telescopic inflation type winding arm structure in the application of the utility model in the slitting machine.

[0025] In the drawing,

[0026] Winding arm 1;

[0027] Winding chuck 2, chuck body 2.1, drive shaft sleeve 2.2, inflation block 2.3, elastic rubber sleeve 2.4;

[0028] Inflation mechanism 3, inflation shaft 3.1, conical drive part 3.2, inflation drive mechanism 3.3, cylinder body 3.4, piston 3.5, reset spring 3.6, protruding part 3.7, bearing seat 3.8, gas supply interface 3.9, annular boss 3.10;

[0029] Rotary drive mechanism 4, chuck motor 4.1, transmission mechanism 4.2;

[0030] Frame 5;

[0031] Horizontal guide rail 6;

[0032] Translation drive mechanism 7, rack 7.1, drive gear 7.2, translation motor 7.3;

[0033] Winding mandrel 8. DETAILED DESCRIPTION

[0034] Specific embodiment one, as Figures 1-4As shown in the figure, a kind of slitting machine telescopic inflation winding arm structure, including two winding arms 1 with winding chuck 2 installed.Winding chuck 2 is rotatably arranged on winding arm 1.At least one winding chuck 2 on two winding arms 1 is inflation chuck.Inflation chuck is provided with inflation mechanism 3 on winding arm 1.Inflation chuck includes chuck body 2.1 rotatably arranged on winding arm 1 by drive shaft sleeve 2.2 and a plurality of inflation blocks 2.3 rotatably arranged on chuck body 2.1 along drive shaft sleeve 2.2.Inflation mechanism 3 includes inflation shaft 3.1 rotatably arranged in drive shaft sleeve 2.2 and inflation drive mechanism 3.3 for driving inflation shaft 3.1 to move.Inflation shaft 3.1 is provided with conical driving portion 3.2, and the outer side of conical driving portion 3.2 is conical surface.Conical driving portion 3.2 extends into chuck body 2.1.Each inflation block 2.3 surrounds conical driving portion 3.2 and abuts against the outer side of conical driving portion 3.2.

[0035] The slitting machine telescopic inflation winding arm structure of the embodiment is used in specific use,

[0036] By clamping winding mandrel 8 through winding chuck 2 on two winding arms 1, winding chuck 2 extends into the inner hole of the two ends of winding mandrel 8.

[0037] Then, inflation drive mechanism 3.3 drives inflation shaft 3.1 and conical driving portion 3.2 to move, drives each inflation block 2.3 to expand outwardly from chuck body 2.1 through conical driving portion 3.2, so that inflation block 2.3 is tightly pressed on the inner wall of the inner hole of winding mandrel 8.Based on this, in actual use of the slitting machine, the inflation force between inflation block 2.3 and the inner hole of winding mandrel 8 can be controlled through inflation drive mechanism 3.3, and the inflation force between inflation block 2.3 and the inner hole of winding mandrel 8 is not affected by the rotating speed of winding chuck 2, so that sufficient friction between inflation block 2.3 and the inner hole of winding mandrel 8 can be ensured.Therefore, the slitting machine telescopic inflation winding arm structure of the embodiment can be applied to winding working conditions of various different winding speeds (including low-speed winding working conditions) and various different material strengths (including materials with high strength), has good winding adaptability and stability, can meet the winding needs of various different slitting working conditions, and can effectively solve the problem that the winding structure in the prior art is prone to slipping of winding mandrel 8 in the winding process, thereby affecting the normal winding of the slitting machine.

[0038] Specific embodiment two, as Figures 1-4 As shown in the figure, a kind of slitting machine telescopic inflation winding arm structure, including two winding arms 1 with winding chuck 2 installed.Winding chuck 2 is rotatably arranged on winding arm 1.At least one winding chuck 2 on two winding arms 1 is inflation chuck.Inflation chuck is provided with inflation mechanism 3 on winding arm 1.In the embodiment, one winding chuck 2 is arranged on each winding arm 1.

[0039] In one embodiment, as shown in Figures 1-3 , the winding chuck 2 on one of the two winding arms 1 is an expansion chuck; the winding chuck 2 on the other winding arm 1 is composed of a chuck body 2.1 which is arranged on the winding arm 1 through a driven shaft (there is no expansion block 2.3 in the chuck body 2.1). In this embodiment, the winding arm 1 on which the expansion chuck is arranged is provided with a rotary driving mechanism 4.

[0040] In another embodiment, the winding chucks 2 on the two winding arms 1 are both expansion chucks (not shown in the figure). In this embodiment, the winding arm 1 on which the expansion chuck is arranged is provided with a rotary driving mechanism 4, which can be provided on one of the two winding arms 1 or on both of the two winding arms 1.

[0041] As shown in Figure 1 , Figure 3 , the expansion chuck includes a chuck body 2.1 which is arranged on the winding arm 1 through a driving shaft sleeve 2.2 and a plurality of expansion blocks 2.3 which are slidingly arranged on the chuck body 2.1. The expansion blocks 2.3 slide along the radial direction of the driving shaft sleeve 2.2. The chuck body 2.1 and the driving shaft sleeve 2.2 are connected by bolts, or the chuck body 2.1 and the driving shaft sleeve 2.2 are connected by welding, or the chuck body 2.1 and the driving shaft sleeve 2.2 are integrally formed. In this embodiment, the chuck body 2.1 and the driving shaft sleeve 2.2 are connected by bolts; the expansion blocks 2.3 are uniformly distributed around the driving shaft sleeve 2.2 in the circumferential direction; the chuck body 2.1 is provided with a plurality of guide holes which extend in the radial direction of the driving shaft sleeve 2.2, the guide holes correspond to the expansion blocks 2.3 one by one, and the expansion blocks 2.3 are slidingly arranged in the corresponding guide holes. The chuck body 2.1 is provided with a chuck inner cavity, and the guide holes are in communication with the chuck inner cavity. The chuck inner cavity is in communication with the inner hole of the driving shaft sleeve 2.2.

[0042] As shown in Figure 1 , Figure 3 , the expansion mechanism 3 includes an expansion shaft 3.1 which is slidingly arranged in the driving shaft sleeve 2.2 and an expansion driving mechanism 3.3 which drives the expansion shaft 3.1 to move. The expansion driving mechanism 3.3 is arranged on the winding arm 1. The expansion shaft 3.1 is provided with a conical driving portion 3.2, and the outer side surface of the conical driving portion 3.2 is a conical surface. The conical driving portion 3.2 extends into the chuck inner cavity of the chuck body 2.1. The conical driving portion 3.2 is coaxially distributed with the driving shaft sleeve 2.2. The expansion shaft 3.1 is coaxially distributed with the driving shaft sleeve 2.2. Each expansion block 2.3 surrounds the conical driving portion 3.2 and abuts against the outer side surface of the conical driving portion 3.2.

[0043] As shown in Figure 1 , Figure 2 , Figure 3As shown, the rotary drive mechanism 4 includes a chuck motor 4.1. The chuck motor 4.1 is mounted on the winding arm 1. The chuck motor 4.1 is in driving connection with the drive shaft sleeve 2.2 through a transmission mechanism 4.2. The chuck motor 4.1 drives the drive shaft sleeve 2.2 to rotate through the transmission mechanism 4.2. The transmission mechanism 4.2 is a belt transmission mechanism or a gear transmission mechanism. In this embodiment, the transmission mechanism is a synchronous belt transmission mechanism.

[0044] In actual use of the slitting machine retractable and expanding winding arm structure of this embodiment,

[0045] The winding core shaft 8 is clamped by the winding chuck 2 on the two winding arms 1, and the winding chuck 2 extends into the inner hole of the two ends of the winding core shaft 8.

[0046] Then, the expanding drive mechanism 3.3 drives the expanding shaft 3.1 and the conical driving part 3.2 to move, and drives each expanding block 2.3 to expand outwardly from the chuck body 2.1 through the conical driving part 3.2, so that the expanding block 2.3 is tightly pressed against the inner wall of the inner hole of the winding core shaft 8. Based on this, in actual use of the slitting machine, the pressing force between the expanding block 2.3 and the inner hole of the winding core shaft 8 can be controlled by the expanding drive mechanism 3.3, and the pressing force between the expanding block 2.3 and the inner hole of the winding core shaft 8 is not affected by the rotating speed of the winding chuck 2, so that sufficient friction between the expanding block 2.3 and the inner hole of the winding core shaft 8 can be ensured.

[0047] Then, the drive shaft sleeve 2.2 and the expanding chuck are driven to rotate by the rotary drive mechanism 4, thereby stably driving the winding core shaft 8 to rotate, and realizing the winding of the slitted material. Therefore, the slitting machine retractable and expanding winding arm structure of this embodiment can be applied to winding working conditions of various different winding speeds (including low-speed winding working conditions) and various different material strengths (including materials with high strength), has good winding adaptability and stability, can adapt to the winding needs of various slitting working conditions, and can effectively solve the problem that the winding structure in the prior art is prone to slipping of the winding core shaft 8 in the winding process, thereby affecting the normal winding of the slitting machine.

[0048] Specifically, as shown in Figure 1 , Figure 2 A slitting machine retractable and expanding winding arm structure further includes a translation drive mechanism 7. The two winding arms 1 are slidingly connected to the frame 5 of the slitting machine. In this embodiment, the frame of the slitting machine is provided with a horizontal guide rail 6, and the horizontal guide rail 6 is provided with sliding seats corresponding to the winding arms 1. The winding arms 1 are connected to the corresponding sliding seats by bolts. The translation drive mechanism 7 corresponds to the winding arms 1 one by one, and the translation drive mechanism 7 drives the corresponding winding arms 1 to move.

[0049] In one embodiment, a rack 7.1 is arranged on the frame of the slitting machine. The rack 7.1 is parallel to the sliding direction of the winding arms 1. The translation driving mechanism 7 comprises a driving gear 7.2 engaged with the rack 7.1 and a translation motor 7.3 driving the driving gear 7.2 to rotate, and the translation motor 7.3 and the driving gear 7.2 are arranged on the winding arms 1. In this way, the driving gear 7.2 can be driven to rotate by the translation motor 7.3, so as to drive the corresponding winding arms 1 to move by the engagement between the driving gear 7.2 and the rack 7.1, so that the winding chucks 2 on the two winding arms 1 can clamp the winding mandrel 8.

[0050] In another embodiment, the translation driving mechanism 7 is a pneumatic cylinder or an electric cylinder or a linear module (not shown in the figure).

[0051] Further, as shown in Figure 1 、 Figure 3 , the expansion chuck further comprises an elastic rubber sleeve 2.4 arranged outside the chuck body 2.1. Each expansion block 2.3 is located inside the elastic rubber sleeve 2.4, and the expansion block 2.3 moves into the chuck body 2.1 and abuts against the tapered driving part 3.2 under the action of the elastic rubber sleeve 2.4. During the process of driving each expansion block 2.3 to expand outwardly from the chuck body 2.1 by the tapered driving part 3.2, each expansion block 2.3 is tightly pressed against the inner wall of the inner hole of the winding mandrel 8 through the elastic rubber sleeve 2.4, so as to further improve the friction between the expansion chuck and the inner hole of the winding mandrel 8, and avoid slipping between the expansion chuck and the winding mandrel 8. On the other hand, after the expansion shaft 3.1 is reset, the expansion block 2.3 can move into the chuck body 2.1 and abut against the tapered driving part 3.2 under the action of the elastic rubber sleeve 2.4, so as to release the expansion connection between the expansion chuck and the winding mandrel 8.

[0052] As shown in Figure 4 , in actual application, the slitting machine comprises one or more winding stations, and each winding station corresponds to a slitting machine telescopic expansion type winding arm structure. The plurality of winding stations are distributed side by side, and specifically, the winding arms 1 of the slitting machine telescopic expansion type winding arm structures of the winding stations are distributed side by side along the same straight line.

[0053] Specific embodiment three, the rest of the structure of this embodiment refers to specific embodiment two, the difference is that,

[0054] As shown in Figure 1 、 Figure 3As shown, the expansion driving mechanism 3.3 includes a cylinder 3.4 arranged on the winding arm 1, a piston 3.5 slidingly arranged in the cylinder 3.4, and a reset spring 3.6. The expansion shaft 3.1 is rotationally connected with the piston 3.5. In this embodiment, the expansion shaft 3.1 is coaxially arranged with the piston 3.5. The reset spring 3.6 drives the piston 3.5 and the expansion shaft 3.1 to reset, so that the expansion shaft 3.1 can move into the chuck body 2.1. In this way, the piston 3.5 and the expansion shaft 3.1 can be driven to move by inputting a gas source with a set pressure into the inner cavity of the cylinder 3.4, so as to drive each expansion block 2.3 to expand out of the chuck body 2.1 through the tapered driving part 3.2, so that the expansion block 2.3 is tightly pressed against the inner wall of the inner hole of the winding mandrel 8; and the pressure of the pressure gas source input into the cylinder 3.4 is controlled to control the pressing force of the expansion block 2.3 tightly pressed against the inner wall of the inner hole of the winding mandrel 8. When the winding is completed, the pressure gas source in the cylinder 3.4 can be released, and then the piston 3.5 and the expansion shaft 3.1 are driven to reset by the reset spring 3.6, so that the expansion shaft 3.1 moves into the chuck body 2.1 to release the expansion connection between the expansion chuck and the winding mandrel 8.

[0055] Further, as shown in Figure 3 The chuck body 2.1 and the cylinder 3.4 are arranged on opposite sides of the winding arm 1. One end of the cylinder 3.4 is open towards the winding arm 1, and the other end of the cylinder 3.4 is closed. The piston 3.5 is abutted against the closed end of the cylinder 3.4 under the action of the reset spring 3.6. In this way, on the one hand, it is beneficial to the actual installation and arrangement of the chuck body 2.1 and the cylinder 3.4; on the other hand, the one end of the cylinder 3.4 is open towards the winding arm 1, so that the piston 3.5 can reduce the size of the cylinder 3.4 in the axial direction under the same stroke (maximum stroke), which is beneficial to improve the compactness of the structure and realize smaller installation space. Especially in the multi-winding station working condition (each winding station is arranged side by side), the overall winding width of the slitting machine can be effectively reduced.

[0056] When the piston 3.5 is abutted against the closed end of the cylinder 3.4 under the action of the reset spring 3.6, the expansion block 2.3 moves into the chuck body 2.1 and is abutted against the tapered driving part 3.2 under the action of the elastic rubber sleeve 2.4, so as to release the expansion connection between the expansion chuck and the winding mandrel 8.

[0057] Further, as shown in Figure 3As shown, the outer wall of the cylinder 3.4 is provided with a gas supply interface 3.9 communicating with the inner cavity of the cylinder 3.4. The piston 3.5 is provided with a protruding part 3.7 protruding towards the closed end of the cylinder 3.4. When the protruding part 3.7 of the piston 3.5 abuts against the closed end of the cylinder 3.4, the part of the gas supply interface 3.9 communicating with the inner cavity of the cylinder 3.4 is located between the piston 3.5 and the closed end of the cylinder 3.4. In this way, the gas supply interface 3.9 can be arranged on the outer wall of the cylinder 3.4 without affecting the normal operation of the expansion drive mechanism 3.3, and the space in the lateral direction of the cylinder 3.4 is utilized to install the gas supply pipeline, thereby further reducing the installation space in the axial direction of the cylinder 3.4, especially in the case of multiple winding stations (the winding stations are arranged side by side), the overall winding width of the slitting machine can be effectively reduced.

[0058] Further, as shown in Figure 3 The winding arm 1 is provided with a shaft sleeve mounting through hole. The drive shaft sleeve 2.2 is rotatably arranged in the shaft sleeve mounting through hole by a bearing. The outer wall of the cylinder 3.4 is provided with an annular boss 3.10. One end of the cylinder 3.4 is open and extends into the shaft sleeve mounting through hole, the annular boss 3.10 abuts against the outer side of the winding arm 1, and the annular boss 3.10 is connected with the winding arm 1 by bolts. In this way, on the one hand, the installation of the cylinder 3.4 is facilitated; on the other hand, by extending one end of the cylinder 3.4 into the shaft sleeve mounting through hole, the cylinder 3.4 can be positioned, and the space in the shaft sleeve mounting through hole can be utilized to accommodate part of the structure of the cylinder 3.4, thereby further improving the compactness of the structure and reducing the installation space in the axial direction of the cylinder 3.4. Especially in the case of multiple winding stations (the winding stations are arranged side by side), the overall winding width of the slitting machine can be effectively reduced.

[0059] Further, as shown in Figure 3 The piston 3.5 is provided with a mounting groove towards one end of the expansion shaft 3.1. The expansion shaft 3.1 is provided with a bearing seat 3.8 towards one end of the piston 3.5. The bearing seat 3.8 is located in the mounting groove, and the bearing seat 3.8 and the mounting groove are connected by a bearing. In this way, the rotation between the expansion shaft 3.1 and the piston 3.5 can be smoothly ensured, and the bearing seat 3.8 and the bearing at one end of the expansion shaft 3.1 are accommodated by arranging the mounting groove on the piston 3.5, which is compact in structure and can reduce the installation space in the axial direction of the cylinder 3.4.

[0060] The reset spring 3.6 is sleeved on the expansion shaft 3.1, one end of the reset spring 3.6 abuts against the drive shaft sleeve 2.2, and the other end of the reset spring 3.6 abuts against the piston 3.5 or the boss of the expansion shaft 3.1. In this embodiment, the other end of the reset spring 3.6 abuts against the bearing seat 3.8.

[0061] In the fourth embodiment, the remaining structure of the fourth embodiment is the same as that of the second embodiment, and the difference is that

[0062] In this embodiment, the expansion drive mechanism 3.3 is a cylinder or an electric cylinder fixedly connected to the winding arm 1, a piston rod of the cylinder or the electric cylinder is rotationally connected with the expansion shaft 3.1, and the piston rod of the cylinder or the electric cylinder is coaxially distributed with the expansion shaft 3.1. In this way, the expansion shaft 3.1 can be directly driven to move up and down by the cylinder or the electric cylinder.

[0063] The above is only a preferred embodiment of the present application, and does not limit the present application in any way. Any simple modification, change or equivalent transformation of the above embodiment according to the technical essence of the present application still falls within the protection scope of the technical solution of the present application.

Claims

1. A telescopic and tensioning rewinding arm structure for a slitting machine, comprising two rewinding arms equipped with rewinding clamps, characterized in that, At least one take-up arm has a take-up clamp that is a tensioning clamp, and the take-up arm where the tensioning clamp is located is equipped with a tensioning mechanism. The expansion chuck includes a chuck body rotatably mounted on the take-up arm via a drive shaft sleeve and several expansion blocks slidably mounted on the chuck body radially along the drive shaft sleeve. The tensioning mechanism includes a tensioning shaft that is slidably disposed in the drive shaft sleeve and a tensioning drive mechanism that drives the tensioning shaft to move. The tensioning shaft is provided with a tapered drive part, and each tensioning block surrounds the tapered drive part and abuts against the tapered drive part.

2. The telescopic and tensioning rewinding arm structure for a slitting machine according to claim 1, characterized in that, The tensioning drive mechanism includes a cylinder mounted on the take-up arm, a piston slidably mounted in the cylinder, and a return spring. The tensioning shaft is rotatably connected to the piston, and the return spring drives the piston and tensioning shaft to return to their original positions, so that the tensioning shaft can move into the chuck body.

3. The telescopic and expanding rewind arm structure for a slitting machine according to claim 2, characterized in that, The chuck body and the cylinder are distributed on opposite sides of the take-up arm. The cylinder has an opening at one end facing the take-up arm and a closed end at the other end. The piston is pressed against the closed end of the cylinder by the action of the return spring.

4. The telescopic and expanding rewind arm structure for a slitting machine according to claim 3, characterized in that, The outer wall of the cylinder is provided with an air supply port that communicates with the inner cavity of the cylinder. The piston is provided with a protrusion that protrudes towards the closed end of the cylinder. When the protrusion of the piston abuts against the closed end of the cylinder, the part of the air supply port that communicates with the inner cavity of the cylinder is located between the piston and the closed end of the cylinder.

5. A telescopic and expanding rewind arm structure for a slitting machine according to claim 3 or 4, characterized in that, The winding arm is provided with a bushing mounting through hole, and the drive bushing is rotated in the bushing mounting through hole through a bearing. The outer wall of the cylinder is provided with an annular boss, and one end of the cylinder extends into the bushing mounting through hole. The annular boss abuts against the outer surface of the winding arm and is connected to the winding arm by bolts.

6. A telescopic expansion and tightening rewinding arm structure for a slitting machine according to claim 2, 3, or 4, characterized in that, The piston has a mounting groove at one end facing the expansion shaft, and the expansion shaft has a bearing seat at one end facing the piston. The bearing seat is located in the mounting groove, and the bearing seat and the mounting groove are connected by a bearing.

7. A telescopic and expanding rewind arm structure for a slitting machine according to claim 1, 2, 3, or 4, characterized in that, The expansion clamp also includes an elastic rubber sleeve sleeved on the outside of the clamp body, and each expansion block is located inside the elastic rubber sleeve. Under the action of the elastic rubber sleeve, the expansion blocks move into the clamp body and abut against the conical drive part.

8. A telescopic and expanding rewind arm structure for a slitting machine according to claim 1, 2, 3, or 4, characterized in that, The tightening chuck is located on the winding arm and is equipped with a rotary drive mechanism. The rotary drive mechanism includes a chuck motor, which drives the drive shaft sleeve to rotate through a transmission mechanism.

9. A telescopic and expanding rewind arm structure for a slitting machine according to claim 1, 2, 3, or 4, characterized in that, It also includes a translation drive mechanism. Two take-up arms are slidably connected to the frame of the slitting machine. The translation drive mechanism corresponds to each take-up arm and drives the corresponding take-up arm to move.

10. The telescopic and expanding rewind arm structure for a slitting machine according to claim 9, characterized in that, The frame of the slitting machine is equipped with a rack, which is parallel to the sliding direction of the take-up arm. The translation drive mechanism includes a drive gear that meshes with the rack and a translation motor that drives the drive gear to rotate. The translation motor and the drive gear are mounted on the take-up arm.

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