Winding device for tape packaging

Abstract

The invention relates to the technical field of winding equipment, and particularly discloses a winding device for winding tape packaging, which comprises a rack, a material guide mechanism and a driving source for driving a material disc to rotate, the shaft pressing assembly comprises a middle block and rotating shafts elastically hinged to the left end and the right end of the middle block, the middle block is arranged at the front end of the rotating arm and located above the material belt, limiting rings are fixedly arranged on the sides, away from each other, of the rotating shafts, and an elastic rope is connected between the middle block and the rotating arm; the bending mechanism comprises two abutting parts arranged at the front end of the rotating arm, the two abutting parts abut against the two rotating shafts correspondingly to enable the rotating shafts to rotate, the pressing shaft assembly is switched between the unfolding state and the bending state, in the unfolding state, the two rotating shafts are in a coaxial state, the pressing shaft assembly is in butt joint with and disengaged from spoke holes through switching of the unfolding state and the bending state of the pressing shaft assembly, and the spoke holes are in butt joint with the spoke holes. Therefore, the pressing shaft assembly presses the end of the material belt or is separated from the end of the material belt.

Description

Technical Field

[0001] The invention relates to the technical field of winding equipment, and in particular to a winding device for roll packaging. Background Art

[0002] On the production line, the winder can work with other equipment, such as extruders, coaters, printers, etc. After the material has been processed in the previous equipment, the winder can timely and continuously wind materials such as film, paper, cables, etc. neatly into rolls, realize the automatic connection of the production process, reduce manual intervention, improve production efficiency, and reduce labor costs. In the process of winding, through reasonable tension control and winding methods, the material can be prevented from folding, twisting, and abrasion during the storage process, ensuring that the physical properties and appearance quality of the material are not damaged, maintaining the integrity of the material, and greatly reducing the space occupied by the material, which is convenient for storage in the warehouse, and also convenient for handling and stacking during transportation, reducing storage and transportation costs.

[0003] The Chinese patent document with the authorization announcement number CN114436007B discloses a winding device, including a material tray transfer module and a supply module arranged on one side of the material tray transfer module, the supply module includes a tape conveyor roll, a paper tape conveyor roll, a cutting assembly and a conveying mechanism, the conveying mechanism has a first mounting seat, the tape conveyor roll and the paper tape conveyor roll are arranged on both sides of the conveying mechanism, the cutting assembly is arranged in the middle of the conveying mechanism, so that the conveying mechanism can stick the tape on the tape conveyor roll to the paper tape of the paper tape conveyor roll, and then cut the tape through the cutting assembly. The formed tape is pasted on the reel of the material tray transfer module, so that the reel can drive the paper tape connected to the tape and the strip material entering from one side of the reel to be wound; wherein, the material tray transfer module includes a transfer assembly, and the transfer assembly is arranged on the outer side of the reel, and is used to adjust the angle between the paper tape delivered to the reel and the strip material, and the supply module can deliver the paper tape of the paper tape delivery roll between the two strip materials to avoid direct contact between the products on the two strip materials, causing damage to the products, so as to realize automatic winding operation, which not only has high winding efficiency, but also reduces processing costs.

[0004] The existing winding device needs to fix the head end of the material tape on the material disc before winding. In order to save costs and facilitate the fixing direction, the head end of the material tape is usually glued to the barrel shaft of the material disc by tape. During the gluing process, the tape is generally glued to the head end of the material tape first, and then the head end of the material tape enters the material receiving slot. At this time, the material tape is easy to contact with the retaining ring, causing the tape to stick to the retaining ring, which needs to be torn off and pasted again, and finally stuck to the barrel shaft, which is more troublesome. In addition, the head end of the material tape is glued to the barrel shaft by the tape, so the head end of the material tape is contaminated by the tape and cannot be used. Moreover, when unwinding to the end, the last section needs a large force to be pulled away from the material disc due to the action of the tape, which can easily cause damage to the material tape. Summary of the invention

[0005] The present invention provides a winding device for roll packaging, aiming to solve the problem in the related art that after the head end of the material tape is fixed on the material tray by the adhesive tape, the last section of the material tape cannot be used normally.

[0006] A winding device for roll packaging includes a frame, a material guiding mechanism and a driving source for driving a material tray to rotate, wherein the material guiding mechanism includes: A swivel arm, rotatably mounted on the frame; The pressing shaft assembly includes a middle block and a rotating shaft elastically hinged at the left and right ends of the middle block. The middle block is arranged at the front end of the rotating arm and above the material belt. The sides of the rotating shafts that are away from each other are fixed with a limit ring. An elastic rope is connected between the middle block and the rotating arm. The bending mechanism includes two abutting parts arranged at the front end of the rotating arm, the two abutting parts respectively abut against the two rotating shafts to rotate the rotating shafts, so that the pressing shaft assembly switches between the unfolded state and the bent state. In the unfolded state, the two rotating shafts are coaxial, and the distance between the two limiting rings is greater than the thickness of the material tray. In the bent state, the distance between the left and right ends of the pressing shaft assembly is less than the width of the material receiving trough. The magnetic component is installed at the front end of the bottom of the rotating arm. Abutment rods are arranged on the left and right sides of the magnetic component. When the pressing shaft component passes under the magnetic component, the magnetic component attracts the middle block to make the two magnetically docked, and the two rotating shafts abut against the abutment rods to present a bent state; When the rotating arm moves into the material tray receiving trough, the pressing shaft assembly switches to a bent state, and finally switches to an unfolded state, so that the rotating shaft passes through the spoke hole, the inner side of the limit ring presses against the outer side of the spoke hole, and the bottom of the pressing shaft assembly presses on the material belt.

[0007] The effect is as follows: before winding, the head end of the material strip needs to be fixed on the barrel shaft. At this time, the rotating arm is located outside the material receiving trough, the head end of the material strip is located outside the rotating arm, the bending mechanism bends the pressure shaft assembly, and then the rotating arm enters the material receiving trough, the pressure shaft assembly flattens and crosses the spoke holes on both sides, so that the material strip is clamped between the pressure shaft assembly and the barrel shaft. When the material tray rotates one circle, the head end of the material strip is rolled between the material strip and the barrel shaft, and the pressure shaft assembly is attracted by the magnetic assembly, so that the pressure shaft assembly is separated from the spoke hole and bent again, so that the material tray is not in contact with the pressure shaft The components are in contact, and the material tray rotates to reel in the remaining material strip, thereby facilitating the fixation of the material strip end without affecting the subsequent reeling and use. After the reeling is completed, the rotating arm rotates upward until the abutment block is located in the upper section, and the two lower bottom plates rotate to be flush with the bottom surface, so that the magnetic force between the middle block and the magnetic block is reduced, and the elastic rope pulls the middle block to separate from the magnetic block, the pressing shaft assembly is reset, and the middle block is re-joined with the limit groove. This arrangement is convenient for resetting, and the elastic belt can be used to provide tightening force during the reeling process to make the material roll tighter.

[0008] Preferably, the rotating arm consists of a rear end arm, an upper top plate and two lower bottom plates. The upper top plate is slidably mounted on the front end of the rear end arm, and a telescopic driving source is installed between the two. A limiting groove matching the middle block is provided at the front end of the upper top plate to limit the position of the middle block. The upper top plate is controlled to slide relative to each other by the telescopic driving source, so that the rotating shaft is disengaged from the abutting part, and the rotating shaft returns to a horizontal state under the action of elasticity, so that the pressing shaft assembly is switched to the expanded state.

[0009] Preferably, the two lower bottom plates are arranged below the upper top plate and are symmetrically arranged. A channel for the material strip to pass through is formed between the upper top plate and the two lower bottom plates. The two abutting portions are respectively arranged at the front ends of the two lower bottom plates. The bending mechanism is used to drive the two lower bottom plates to bend relative to each other with one side thereof being close to the other as the axis. The two lower bottom plates rotate relative to each other to reduce their overall width so that they can enter the material receiving trough, and at the same time, the abutting portion rises and abuts against the rotating shaft, so that the pressing shaft assembly switches from the unfolded state to the bent state.

[0010] Preferably, the bending mechanism includes an abutment block fixedly mounted on the rear end of the lower base plate, a sliding shaft is fixedly mounted on the abutment block, an arc-shaped sliding groove matching the sliding shaft is provided at the front end of the rear end arm, and the bending mechanism also includes a driving mechanism for driving the sliding shaft to slide along the sliding groove, and the relative rotation of the lower base plate is controlled by sliding the sliding shaft in the sliding groove.

[0011] Preferably, the driving mechanism includes an arc-shaped slide rail fixedly mounted on the frame, the arc-shaped slide rail being coaxial with the rotation axis of the rotating arm, and when the abutment block is at the top of the arc-shaped slide rail, the top of the abutment block abuts against the top of the arc-shaped slide rail, thereby making the bottom surfaces of the two lower bottom plates flush; when the abutment block slides downward along the arc-shaped slide rail, the side surface of the abutment block abuts against the side surface of the arc-shaped slide rail, thereby making the two lower bottom plates rotate relative to each other; when the lower bottom plates are located outside the material receiving trough, the top of the abutment block abuts against the top of the arc-shaped slide rail, thereby making the two lower bottom plates form a U-shape; when the lower bottom plates enter the material receiving trough, the side surface of the abutment block abuts against the side surface of the arc-shaped slide rail, thereby making the two lower bottom plates rotate relative to each other so that the overall width of the two is reduced, thereby enabling them to enter the material receiving trough.

[0012] Preferably, a bending rod is provided at the bottom of the upper top plate. When the two lower bottom plates rotate relative to each other, the middle part of the upper surface of the material strip abuts against the bending rod, so that the cross-section of the material strip is bent. Since the material strip is relatively soft, the end of the material strip tends to droop after entering the material receiving trough, causing the middle part of the material strip to bend, thereby enhancing the strength of the material strip. When the end of the material strip enters the material receiving trough, the end of the material strip is prevented from drooping freely, and the end of the material strip tends to be horizontal. Then, the pressing shaft assembly slides down along the spoke hole and presses on the end of the material strip, thereby completing the fixation of the end of the material strip.

[0013] Preferably, the magnetic assembly includes two magnetic blocks that can attract the middle block, and the two magnetic blocks are respectively installed on the bottom surfaces of the two lower bottom plates. When the two lower bottom plates are bent relative to each other, the bottom surfaces of the magnetic blocks are flush. When the middle block is close to the magnetic block, the magnetic block attracts the middle block, so that the pressure shaft assembly is separated from the spoke hole. When the material disc rotates nearly one circle, the middle block moves under the magnetic block. Under the action of magnetic force, the middle block moves toward the magnetic block, and the rotating shaft no longer contacts the wall of the spoke hole. The middle block and the magnetic block complete magnetic docking, and the abutment rod abuts against the rotating shaft, so that the pressure shaft assembly is in a bent state, and the elastic band presses the material strip to prevent the end of the material strip from falling off.

[0014] Preferably, an ejector assembly is installed between the two lower bottom plates. When the bottom surfaces of the two lower bottom plates are flush, the ejector assembly abuts against the middle of the middle block to separate the middle block from the magnetic block, thereby facilitating the separation and resetting of the middle block.

[0015] Preferably, the ejection assembly includes two groups of V-shaped connecting rods, which are composed of two hinged connecting rods. The ends of the two connecting rods that are away from each other are hinged to the two lower base plates respectively. A push rod that can abut against the middle block is connected between the two groups of V-shaped connecting rods. When the rotating arm rotates upward until the abutment block is located in the upper section, the two lower base plates rotate until the bottom surfaces are flush, and the V-shaped connecting rod pushes the push rod to move downward relative to the bottom surface of the lower base plate, so that the push rod abuts against the middle block, reduces the magnetic force between the middle block and the magnetic block, and the elastic rope pulls the middle block to separate from the magnetic block.

[0016] Preferably, the lower base plate and the magnetic block are provided with clearance grooves, and the connecting rod is installed in the clearance grooves. The clearance grooves are provided to avoid interference between the connecting rod and the lower base plate and the magnetic block, and to facilitate assembly.

[0017] By adopting the above technical solution, the beneficial effects of the present invention are: 1. Before winding, the rotating arm is located outside the material receiving trough, and the head end of the material strip is located outside the rotating arm. The rotating arm rotates downward, and the side of the abutment block abuts against the side of the arc-shaped slide rail, so that the two lower bottom plates rotate relative to each other to reduce the overall width of the two. At the same time, the abutment portion abuts against the rotating shaft, so that the pressing shaft assembly changes from an expanded state to a bent state, and then the rotating arm enters the material receiving trough, and the pressing shaft assembly flattens and crosses the spoke holes on both sides, so that the material strip is clamped between the pressing shaft assembly and the barrel shaft. When the material tray rotates one circle, the head end of the material strip is rolled up between the material strip and the barrel shaft, and the pressing shaft assembly is attracted by the magnetic assembly, so that the pressing shaft assembly is separated from the spoke hole and bent again, so that the material tray does not contact the pressing shaft assembly, and the material tray rotates to wind up the remaining material strip. This arrangement can avoid the disadvantages of using tape to fix the end head, and can automatically fix the end head, thereby improving the winding efficiency.

[0018] 2. After winding is completed, the rotating arm rotates upward until the abutment block is located in the upper section, and the two lower bottom plates rotate until the bottom surfaces are flush. The V-shaped connecting rod pushes the push rod to move downward relative to the bottom surface of the lower bottom plate, so that the push rod abuts against the middle block, reducing the magnetic force between the middle block and the magnetic block. The elastic rope pulls the middle block to separate from the magnetic block, the pressing shaft assembly is reset, and the middle block re-docking with the limit groove. This arrangement is convenient for resetting, and the elastic belt can be used to provide tightening force during the winding process to make the material roll tighter.

[0019] 3. When the two lower bottom plates rotate relative to each other, the middle part of the material belt abuts against the bending rod, so that the cross section of the material belt is bent, thereby enhancing the strength of the material belt and preventing the free drooping of the material belt end after entering the receiving trough, so that the pressing shaft assembly can be pressed on the upper surface of the material belt after being separated from the rotating arm. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a structural schematic diagram of the present invention.

[0021] Figure 2 It is a structural schematic diagram of the operation step S1 of the present invention.

[0022] Figure 3 It is a schematic diagram of the structure of running steps S2 and S3 of the present invention.

[0023] Figure 4 It is a structural schematic diagram of running step S4 of the present invention.

[0024] Figure 5It is a structural schematic diagram of running step S5 of the present invention.

[0025] Figure 6 It is a structural schematic diagram of running step S6 of the present invention.

[0026] Figure 7 It is a schematic structural diagram of the pressure shaft assembly in the present invention.

[0027] Figure 8 It is a schematic diagram of the exploded structure of the rotating arm in the present invention.

[0028] Fig. 9 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0029] Fig.10 It is a schematic diagram of the structure of the arc-shaped slide rail in the present invention.

[0030] Fig.11 It is a schematic diagram of the structure of the magnetic block when the present invention runs step S6.

[0031] Fig.12 It is a structural schematic diagram of the connecting rod in the present invention.

[0032] Reference numerals: 1. Material tray; 11. Cylinder shaft; 12. Stop ring; 121. Spoke hole; 2. Frame; 3. Opening mechanism; 31. Telescopic cylinder; 32. Inverted cone block; 4. Material guiding mechanism; 41. Rotating arm; 412. Rear end arm; 413. Upper top plate; 4131. Limiting groove; 4132. Bending rod; 414. Telescopic driving source; 415. Lower bottom plate; 42. Pressing shaft assembly; 421. Elastic rope; 422. Intermediate block; 423. Rotating shaft; 4231. Limiting ring; 43. Bending mechanism; 431. Abutment; 432. Slide groove; 433. Arc slide rail; 434. Sliding shaft; 435. Abutment block; 44. Magnetic assembly; 441. Magnetic block; 442. Abutment rod; 45. Ejection assembly; 451. Connecting rod; 452. Push rod. DETAILED DESCRIPTION

[0033] Embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and intended to be used to explain the present invention, but should not be understood as limiting the present invention.

[0034] like Figure 1 and Figure 2As shown, the material tray 1 is usually integrally molded by plastic injection molding, and can be divided into a barrel shaft 11 and two retaining rings 12 coaxially fixedly installed on the left and right ends of the barrel shaft 11, a material receiving groove is formed between the two retaining rings 12, a driving hole is opened at the axis center of the barrel shaft 11, and fan-shaped spoke holes 121 are opened on the retaining ring 12. The side of the spoke hole 121 close to the barrel shaft 11 is flush with the outer circumference of the barrel shaft 11, and the outer circumference of the barrel shaft 11 is provided with friction patterns, which are used to increase the friction between the barrel shaft 11 and the end of the material belt to prevent the end of the material belt from falling off.

[0035] A winding device for roll packaging, comprising a frame 2, a spreading mechanism 3, a material guiding mechanism 4, a feeding mechanism (not shown in the figure) and a driving source for driving a material tray 1 to rotate, the driving source is mounted on the frame 2, the driving shaft of the driving source can be telescopic and rotatable (for example, an electric push rod and a motor, the cylinder body of the electric push rod is fixedly mounted on the output end of the motor, and the telescopic end of the electric push rod is connected to the driving shaft), when a new material tray 1 is placed at the driving shaft position, the driving shaft extends out and is inserted into the driving hole, and then the material tray 1 is controlled to rotate, when the material tray is fully wound with material tape, the driving shaft contracts and disengages from the driving hole, thereby causing the material tray 1 to fall, the feeding mechanism is mounted on the frame for conveying the material tape into the material guiding mechanism 4, and the material guiding mechanism 4 guides the material tape so that the material tape enters the material tray 1 for winding.

[0036] Since the plastic material tray 1 is easily deformed during storage and transportation, the edges of the two retaining rings 12 tend to move closer to the middle. At this time, it is necessary to set an opening mechanism 3 to open the material receiving trough to a normal width so that the material guide mechanism 4 can normally enter the material receiving trough with the end of the material belt; The stretching mechanism 3 includes a vertically arranged telescopic cylinder 31, the cylinder body of the telescopic cylinder 31 is fixedly mounted on the frame 2, and the telescopic cylinder 31 is located above the driving source, the piston rod of the telescopic cylinder 31 faces downward, and the end is fixedly connected with an inverted cone block 32, the diameter of the inverted cone block 32 is the same as the width of the material receiving trough, and the inverted cone block 32 is controlled by the telescopic cylinder 31 to descend into the material receiving trough, the inverted cone block 32 abuts against the retaining ring 12, so that the two retaining rings 12 are separated from each other, thereby stretching the retaining rings 12 to both sides, so that the material receiving trough is restored to the preset width, so that the front end of the material guiding mechanism 4 can enter the material receiving trough, when the front end of the material guiding mechanism 4 can enter the material receiving trough, the telescopic cylinder 31 controls the inverted cone block 32 to rise, so that the inverted cone block 32 is separated from the material receiving trough to avoid affecting the subsequent winding.

[0037] like Figure 1 and Figure 8As shown, the material guide mechanism 4 includes: a rotating arm 41, a pressing shaft assembly 42, a bending mechanism 43 and a magnetic assembly 44. A feeding hole that passes through the front and back is opened at the center of the rotating arm 41, and the material belt passes through the feeding hole. The rear end of the rotating arm 41 is rotatably mounted on the frame 2. A rotating driving source (such as a servo motor) is installed in the frame 2 to control the front half of the rotating arm 41 to enter or rotate out of the material receiving trough. The pressing shaft assembly 42 is installed at the front end of the rotating arm 41. The bending mechanism 43 is installed on the rotating arm 41 to control the bending degree of the pressing shaft assembly 42 so that the pressing shaft assembly 42 can enter the material receiving trough. The magnetic assembly 44 is arranged at the front end of the bottom of the rotating arm 41; Before winding, the head end of the material strip needs to be fixed on the barrel shaft 11. At this time, the rotating arm 41 is located outside the material receiving trough, and the head end of the material strip is located outside the rotating arm 41. The bending mechanism 43 bends the pressing shaft assembly 42, and then the rotating arm 41 enters the material receiving trough. The pressing shaft assembly 42 is flattened and crosses the spoke holes 121 on both sides, so that the material strip is clamped between the pressing shaft assembly 42 and the barrel shaft 11. After the material tray 1 rotates one circle, the head end of the material strip is rolled between the material strip and the barrel shaft 11, and the pressing shaft assembly 42 is attracted by the magnetic assembly 44, so that the pressing shaft assembly 42 is separated from the spoke hole 121 and bent again, so that the material tray 1 is not in contact with the pressing shaft assembly 42, and the material tray 1 rotates to wind up the remaining material strip.

[0038] like Figure 7 , Figure 8 and Fig. 9 As shown, the pressing shaft assembly 42 includes: an elastic rope 421, an intermediate block 422 and two rotating shafts 423. The intermediate block 422 is square and has a protrusion on one side. The elastic rope 421 is connected between the protrusion and the rotating arm 41. The two rotating shafts 423 are respectively hinged at the left and right ends of the intermediate block 422, and a torsion spring is provided at the hinge. A limiting ring 4231 with a diameter larger than the rotating shaft 423 is fixedly provided on one end of the rotating shaft 423 away from the intermediate block 422. The intermediate block 422 is made of ferromagnetic material (such as iron-nickel alloy). The elastic rope 421 is divided into two sections, front and rear sections. The front section is connected to the middle block 422. The front section has relatively low elasticity (for example, nylon material), and the outer surface of the front section has a coating that reduces the friction coefficient (for example, Teflon coating). The rear section has relatively high elasticity (for example, rubber). Since the elastic band is relatively long, a winding wheel is installed on the rotating arm 41, and a spiral spring is installed in the winding wheel. The elastic rope 421 is wound around the winding wheel. In the initial state, the winding wheel is used to wind the rear section around the winding wheel through the spiral spring. In the winding state, the winding wheel rotates in the opposite direction to unwind the elastic rope 421, and the rear section is stretched at the same time, so that the front section of the elastic rope 421 is wrapped around the outside of the material roll.

[0039] The pressing shaft assembly 42 has an unfolded state and a bent state. When the pressing shaft assembly 42 is in the unfolded state without external force, the torsion spring makes the two rotating shafts 423 coaxial. The distance between the two limiting rings 4231 is greater than the thickness of the material tray 1. The rotation axes of the two rotating shafts are both perpendicular to the front end face of the rotating arm 41. When in the bent state, the two rotating shafts 423 rotate the same angle relative to the middle block 422, so that the axes of the two rotating shafts 423 intersect to form a certain angle. At this time, the maximum length of the pressing shaft assembly 42 in the left-right direction is less than the width of the material receiving groove.

[0040] As Figure 7 and Figure 8 shown, the rotating arm 41 includes: a rear end arm 412, an upper top plate 413, a telescopic driving source 414, and two lower bottom plates 415. The rear end arm 412 is connected to the output end of the rotating driving source. The width of the upper top plate 413 is less than the width of the material receiving groove. The upper top plate 413 is slidably installed at the front end of the rear end arm 412, and a telescopic driving source 414 is connected between the two. A limiting groove 4131 (shown as a square protruding part and a square limiting groove 4131 in the figure) adapted to the protruding part of the middle block 422 is provided at the front end of the upper top plate 413. A limiting plate in contact with the top of the middle block 422 is provided above the limiting groove 4131. The elastic rope 421 passes through the limiting groove 4131 and is connected to the middle block 422, so as to pull the protruding part into the limiting groove 4131 through the elastic rope 421, thereby restricting the position of the middle block 422 and preventing the middle block 422 from rotating relative to the limiting groove 4131. When the protruding part is located in the limiting groove 4131, the hinge axis of the rotating shaft 423 is parallel to the length direction of the rotating arm 41. The two lower bottom plates 415 are arranged below the upper top plate 413. The lower bottom plates 415 are L-shaped and symmetrically arranged, thus forming a U shape. A channel for the material tape to pass through is surrounded between the upper top plate 413 and the two lower bottom plates 415. The front end of the lower bottom plate 415 is rounded to prevent the material tape from being scratched.

[0041] As Figure 7 、 Fig. 9 and Fig.10As shown, the bending mechanism includes an abutment portion 431, a slide groove 432, an arc-shaped slide rail 433, a sliding shaft 434 and an abutment block 435. The two abutment portions 431 are respectively arranged at the front ends of the two lower bottom plates 415 and are located below the rotation shaft 423. The two slide grooves 432 are symmetrically arranged at the front ends of the rear end arms 412. The slide grooves 432 are arc-shaped. The two abutment blocks 435 are respectively fixedly installed at the rear ends of the two lower bottom plates 415 and are symmetrical. At least two sliding shafts 434 are fixedly installed on each abutment block 435. The sliding shaft 434 is slidably installed in the slide grooves 432. , so that the lower bottom plate 415 can rotate around the edge line of its inner top end, the arc-shaped slide rail 433 is fixedly installed on the frame 2, the arc-shaped slide rail 433 is coaxial with the rotation axis of the rotating arm 41, an arc-shaped slide groove is opened in the middle of the arc-shaped slide rail 433, and the abutment block 435 is located in the arc-shaped slide groove and slides along the arc-shaped slide rail 433, the left and right side walls of the arc-shaped slide groove are symmetrically arranged, and are divided into three sections from top to bottom, the side wall of the upper section is farther from the lower bottom plate 415, the side wall of the lower section is closer to the lower bottom plate 415, and the side wall of the middle section is an inclined surface for connecting the upper and lower sections; When the abutment block 435 is located in the upper section, the top surface of the abutment block 435 abuts against the top surface of the arc-shaped slide groove of the arc-shaped slide rail 433, so that the lower bottom surfaces of the two lower bottom plates 415 are aligned; when the abutment block 435 is located in the middle section, the side surface of the abutment block 435 abuts against the side surface of the arc-shaped slide groove of the arc-shaped slide rail 433, so that the abutment block 435 and the sliding shaft 434 slide along the slide groove 432, thereby causing the two lower bottom plates 415 to gradually tilt; when the abutment block 435 is located in the lower section, the bottom surfaces of the two lower bottom plates 415 form a certain angle, and at this time, the width of the two lower bottom plates 415 in the left and right directions is smaller than the width of the material receiving trough, and at this time, the lower bottom plates 415 enter the material receiving trough.

[0042] like Fig.11 and Fig.12 As shown, the magnetic assembly 44 includes two magnetic blocks 441 and abutment rods 442. The two magnetic blocks 441 and abutment rods 442 are symmetrically arranged on the two lower bottom plates 415 in groups of two. The cross-section of the magnetic block 441 is triangular, and the two magnetic blocks 441 are arranged diagonally. When the bottom surfaces of the two lower bottom plates 415 form a certain angle and enter the material receiving chute, the bottom surfaces of the two magnetic blocks 441 are flush, and the abutment rods 442 are fixedly installed on the lower bottom plates 415, and there is a certain distance between the abutment rods 442 and the magnetic blocks 441, so that when the intermediate block 422 is magnetically docked with the magnetic block 441, the abutment rods 442 abut against the rotating shaft 423, so that the pressing shaft assembly 42 is in a bent state.

[0043] like Figure 7 , Figure 8 and Fig.12As shown, in order to enable the middle block 422 to be separated from the magnetic block 441 when the bottom surfaces of the two lower bottom plates 415 are flush, an ejection assembly 45 is installed between the two lower bottom plates 415 .

[0044] The ejector assembly 45 includes four connecting rods 451 and a push rod 452. The four connecting rods 451 are hinged at the two ends of the push rods 452 in pairs, thereby forming two groups of V-shaped connecting rods. The lower bottom plate 415 is provided with a clearance groove. The two ends of the V-shaped connecting rod are respectively hinged in the clearance grooves of the two lower bottom plates 415. When the bottom surfaces of the two lower bottom plates 415 form a certain angle and enter the material receiving trough, the push rods 452 are located in the clearance grooves, and the bottom end of the ejector assembly 45 is located at the bottom of the magnetic block 441. Therefore, at this time, the push rod 452 is not in contact with the middle block 422. When the bottom surfaces of the two lower base plates 415 are flush, the V-shaped connecting rod pushes the push rod 452 to move downward relative to the bottom surface of the lower base plate 415, so that the push rod 452 is against the middle block 422, and the magnetic force between the middle block 422 and the magnetic block 441 is reduced. At the same time, under the pulling force of the elastic rope 421, the middle block 422 is separated from the magnetic block 441, and the elastic rope 421 contracts to reset the pressing shaft assembly 42.

[0045] The working steps of the above-mentioned winding device are: S1. Install the material tray 1 on the driving end of the driving source, and the spoke holes 121 of the material tray 1 are located at a predetermined angle. The material belt passes through the feeding hole of the rotating arm 41, and the head end of the material belt exceeds the front end of the rotating arm 41 by a certain distance (the state at this time refers to Figure 2 ); S2, the telescopic cylinder 31 controls the inverted cone block 32 to descend into the receiving trough, thereby opening the retaining ring 12 and restoring the receiving trough to the preset width (the state at this time refers to Figure 3 ); S3, the rotating arm 41 rotates in the direction close to the receiving trough, and the abutment block 435 moves to the lower section, so that the bottom surfaces of the two lower bottom plates 415 form a certain angle. At the same time, the abutment portion 431 abuts against the rotating shaft 423, so that the pressing shaft assembly 42 changes from the unfolded state to the bent state, so that the width of the pressing shaft assembly 42 and the front half of the rotating arm 41 is smaller than the width of the receiving trough (reference is made to the state at this time). Figure 3 ); S4, after the rotating arm 41 moves to the material receiving trough with the pressing shaft assembly 42, the telescopic driving source 414 pushes the upper top plate 413 to slide forward until the rotating shaft 423 is separated from the abutting portion 431, and the pressing shaft assembly 42 is located between the spoke holes 121 on both sides, and the pressing shaft assembly 42 changes from a bent state to an unfolded state, the rotating shaft 423 passes through the spoke holes 121, and the limiting ring 4231 is located on the outside of the material tray 1 (the state at this time refers to Figure 4 ); S5, start the driving source, make the material tray 1 rotate slowly, the rotating shaft 423 abuts against the inner wall of the spoke hole 121, so that the middle block 422 pulls the elastic rope 421 out of the limit groove 4131, and at the same time, the pressing shaft assembly 42 slides along the inner wall of the spoke hole 121 toward the center of the material tray 1, so that the head end of the material belt is pressed between the pressing shaft assembly 42 and the barrel shaft 11 and rotates with the material tray 1 (the state at this time refers to Figure 5 ); S6. When the material tray 1 rotates nearly one circle, the middle block 422 moves to the bottom of the magnetic block 441. Under the action of the magnetic force, the middle block 422 moves toward the magnetic block 441, and the rotating shaft 423 no longer contacts the wall of the spoke hole 121. The middle block 422 and the magnetic block 441 complete the magnetic docking. The abutment rod 442 abuts against the rotating shaft 423, so that the pressing shaft assembly 42 is in a bent state, and the elastic belt presses the material belt to prevent the end of the material belt from falling off (reference to the state at this time). Figure 6 ); S7, the driving source causes the material tray 1 to rotate faster, and at the same time, the rotating arm 41 gradually rotates upward, and the front section of the elastic band presses the material belt, so that the material belt is wound tightly; S8. When the material receiving trough is full of material strips, the tail end of the material strips is cut off; S9, when the rotating arm 41 rotates upward until the contact block 435 is located at the upper section, the two lower bottom plates 415 rotate until the bottom surfaces are flush, and the V-shaped connecting rod pushes the push rod 452 to move downward relative to the bottom surface of the lower bottom plate 415, so that the push rod 452 abuts against the middle block 422, so that the magnetic force between the middle block 422 and the magnetic block 441 is reduced, and the elastic rope 421 pulls the middle block 422 to separate from the magnetic block 441, and the pressing shaft assembly 42 is reset, and the protrusion of the middle block 422 re-enters the limiting groove 4131 (the state at this time refers to Figure 2 ).

[0046] In the above working process, the end of the material strip can be easily rolled up through the pressing shaft assembly 42, and the front section of the elastic rope 421 is used to press the material strip during the winding process to make the material strip more tightly wound. After the winding is completed, the pressing shaft assembly 42 is detached and automatically reset under the action of the elastic belt, which is convenient for the next winding.

[0047] like Fig.11 and Fig.12 As shown, since the material strip is relatively soft, the end is easy to droop after entering the material receiving trough, which may cause the pressing shaft assembly 42 to be unable to press down the end of the material strip. Therefore, a bending rod 4132 is provided at the bottom of the upper top plate 413. When the two lower bottom plates 415 rotate relative to each other, the middle part of the material strip is against the bending rod 4132, so that the cross-section of the material strip is bent, thereby enhancing the strength of the material strip and preventing the end of the material strip from freely hanging down.

[0048] Although the embodiments of the present invention have been shown and described above, it is to be understood that the above embodiments are exemplary and are not to be construed as limitations of the present invention. A person skilled in the art may change, modify, replace and vary the above embodiments within the scope of the present invention.

Claims

1. A winding device for roll packaging, comprising a frame (2), a material guide mechanism (4) and a driving source for driving a material tray (1) to rotate, characterized in that: The material guiding mechanism (4) comprises: A rotating arm (41) is rotatably mounted on the frame (2); The pressing shaft assembly (42) comprises a middle block (422) and a rotating shaft (423) elastically hinged at the left and right ends of the middle block (422); the middle block (422) is arranged at the front end of the rotating arm (41) and above the material belt; a limiting ring (4231) is fixedly arranged on the side of the rotating shaft (423) away from each other; and an elastic rope (421) is connected between the middle block (422) and the rotating arm (41); The bending mechanism (43) comprises two abutting portions (431) arranged at the front end of the rotating arm (41), the two abutting portions (431) respectively abut against two rotating shafts (423) to rotate the rotating shafts (423), so that the pressing shaft assembly (42) switches between an unfolded state and a bent state. In the unfolded state, the two rotating shafts (423) are coaxial, and the distance between the two limiting rings (4231) is greater than the thickness of the material tray (1). In the bent state, the distance between the left and right ends of the pressing shaft assembly (42) is less than the width of the material receiving trough. The magnetic component (44) is mounted at the front end of the bottom of the rotating arm (41). Abutment rods (442) are arranged on the left and right sides of the magnetic component (44). When the pressing shaft component (42) passes under the magnetic component (44), the magnetic component (44) attracts the middle block (422) so that the two are magnetically connected, and the two rotating shafts (423) are abutted against the abutment rods (442) to present a bent state. When the rotating arm (41) moves into the receiving groove of the material tray (1), the pressing shaft assembly (42) switches to a bent state and finally switches to an unfolded state, so that the rotating shaft (423) passes through the spoke hole (121), the inner side of the limiting ring (4231) presses against the outer side of the spoke hole (121), and the bottom of the pressing shaft assembly (42) presses on the material belt.

2. The winding device for tape packaging according to claim 1, characterized in that: The rotating arm (41) is composed of a rear end arm (412), an upper top plate (413) and two lower bottom plates (415); the upper top plate (413) is slidably mounted on the front end of the rear end arm (412), and a telescopic driving source (414) is mounted between the two; and a limiting groove (4131) adapted to the middle block (422) is provided at the front end of the upper top plate (413), thereby limiting the position of the middle block (422).

3. The winding device for tape packaging according to claim 2, characterized in that: The two lower bottom plates (415) are arranged below the upper top plate (413) and are symmetrically arranged. A channel for the material belt to pass through is formed between the upper top plate (413) and the two lower bottom plates (415). The two abutment portions (431) are respectively arranged at the front ends of the two lower bottom plates (415). The bending mechanism (43) is used to drive the two lower bottom plates (415) to bend relative to each other with the side close to each other as the axis.

4. The winding device for tape packaging according to claim 3, characterized in that: The bending mechanism (43) comprises an abutment block (435) fixedly mounted on the rear end of the lower base plate (415); a sliding shaft (434) is fixedly mounted on the abutment block (435); a front end of the rear end arm (412) is provided with an arc-shaped sliding groove (432) matching the sliding shaft (434); and the bending mechanism (43) further comprises a driving mechanism for driving the sliding shaft (434) to slide along the sliding groove (432).

5. The winding device for tape packaging according to claim 4, characterized in that: The driving mechanism comprises an arc-shaped slide rail (433) fixedly mounted on the frame (2); the arc-shaped slide rail (433) is coaxial with the rotation axis of the rotating arm (41); when the abutment block (435) is at the top of the arc-shaped slide rail (433), the top of the abutment block (435) abuts against the top of the arc-shaped slide rail (433), thereby making the bottom surfaces of the two lower bottom plates (415) flush; when the abutment block (435) slides downward along the arc-shaped slide rail (433), the side surface of the abutment block (435) abuts against the side surface of the arc-shaped slide rail (433), thereby making the two lower bottom plates (415) rotate relative to each other.

6. The winding device for tape packaging according to claim 5, characterized in that: A bending rod (4132) is provided at the bottom of the upper top plate (413), and when the two lower bottom plates (415) rotate relative to each other, the middle of the upper surface of the material strip abuts against the bending rod (4132), so that the cross section of the material strip presents a bent shape.

7. The winding device for tape packaging according to claim 6, characterized in that: The magnetic assembly (44) comprises two magnetic blocks (441) capable of attracting the middle block (422); the two magnetic blocks (441) are respectively mounted on the bottom surfaces of the two lower bottom plates (415); when the two lower bottom plates (415) are bent relative to each other, the bottom surfaces of the magnetic blocks (441) are flush; when the middle block (422) approaches the magnetic blocks (441), the magnetic blocks (441) attract the middle block (422), so that the pressure shaft assembly (42) is separated from the spoke hole (121).

8. The winding device for tape packaging according to claim 7, characterized in that: An ejection assembly (45) is installed between the two lower bottom plates (415); when the bottom surfaces of the two lower bottom plates (415) are flush, the ejection assembly (45) abuts against the middle of the middle block (422) so that the middle block (422) is separated from the magnetic block (441).

9. The winding device for tape packaging according to claim 8, characterized in that: The ejection assembly (45) comprises two groups of V-shaped connecting rods, each of which is composed of two hinged connecting rods (451). The ends of the two connecting rods (451) that are away from each other are respectively hinged to the two lower bottom plates (415). A push rod (452) that can abut against the middle block (422) is connected between the two groups of V-shaped connecting rods.

10. The winding device for tape packaging according to claim 8, characterized in that: The lower bottom plate (415) and the magnetic block (441) are provided with clearance grooves, and the connecting rod (451) is installed in the clearance grooves.

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