A winding device for roll packaging

Abstract

The present invention relates to the technical field of winding equipment, and specifically discloses a winding device for tape packaging, which includes a frame, a material guiding mechanism, and a driving source for driving the reel to rotate. The material guiding mechanism includes: a rotating arm rotatably installed on the frame; a pressing shaft assembly including an intermediate block and rotating shafts elastically hinged to the left and right ends of the intermediate block. The intermediate block is arranged at the front end of the rotating arm and above the tape. Limiting rings are fixedly arranged on the sides of the rotating shafts away from each other. An elastic rope is connected between the intermediate block and the rotating arm; a bending mechanism includes two abutting parts arranged at the front end of the rotating arm, and the two abutting parts respectively abut against the two rotating shafts to rotate the rotating shafts, so that the pressing shaft assembly is switched between an unfolded state and a bent state. In the unfolded state, the two rotating shafts are coaxial. By switching the unfolded and bent states of the pressing shaft assembly, it is docked with and separated from the spoke hole, so that the pressing shaft assembly presses or disengages from the end of the tape.

Description

Technical Field

[0001] The present invention relates to the technical field of winding equipment, and particularly relates to a winding device for tape packaging. Background Art

[0002] On a production line, a winder can work in cooperation with other equipment, such as an extruder, a coater, a printer, etc. When the material is completed in the previous equipment, the winder can timely and continuously wind materials such as films, papers, cables, etc. into rolls neatly, realizing the automatic connection of the production process, reducing manual intervention, improving production efficiency, reducing labor costs. During the winding process, through reasonable tension control and winding methods, it is possible to avoid situations such as folding, twisting, and wear of the material during storage, ensuring that the physical properties and appearance quality of the material are not damaged, maintaining the integrity of the material, greatly reducing the space occupied by the material, facilitating storage in a warehouse, and also facilitating handling and stacking during transportation, reducing storage and transportation costs.

[0003] A Chinese patent document with the authorization announcement number CN114436007B discloses a winding device, which includes a material tray rotation module and a supply module arranged on one side of the material tray rotation module. The supply module includes a tape conveying roll, a paper tape conveying roll, a cutting component, and a conveying mechanism. The conveying mechanism has a first mounting seat. The tape conveying roll and the paper tape conveying roll are arranged on both sides of the conveying mechanism. The cutting component is arranged in the middle of the conveying mechanism, so that the conveying mechanism can paste the tape on the tape conveying roll onto the paper tape on the paper tape conveying roll, and then paste the completed tape cut by the cutting component into the winding material tray of the material tray rotation module, so that the winding material tray can drive the paper tape connected to the tape and the strip material entering from one side of the winding material tray to wind; wherein, the material tray rotation module includes a rotation component, and the rotation component is arranged outside the winding material tray and is used to adjust the angle between the paper tape and the strip material conveyed into the winding material tray. The supply module can convey the paper tape of the paper tape conveying roll between two strip materials, avoiding direct contact between the products on the two strip materials and causing damage to the products, so as to realize automatic winding operation, not only with high winding efficiency, but also reducing the processing cost.

[0004] Before the existing rewinding device rewinds, the head end of the tape needs to be fixed on the reel. Considering cost savings and the convenience of the fixing direction, usually the head end of the tape is adhered to the reel shaft of the reel through tape. During the adhesion process, the tape is generally first adhered to the head end of the tape, and then the head end of the tape enters the winding groove. At this time, the tape is likely to contact the retaining ring, causing the tape to adhere to the retaining ring and requiring it to be torn off and pasted again, and finally adhered to the reel shaft, which is rather troublesome. Moreover, the head end of the tape is adhered to the reel shaft through the tape, so the head end of the tape is contaminated by the tape and cannot be used. And when unwinding to the end, due to the effect of the tape, a relatively large force is required to pull the last section from the reel, so the tape is easily damaged. Summary of the Invention

[0005] The present invention provides a rewinding device for tape packaging, aiming to solve the problem that the last section of the tape cannot be used properly after the head end of the tape is fixed on the reel through tape in the related art.

[0006] A rewinding device for tape packaging includes a frame, a guiding mechanism, and a driving source for driving the reel to rotate. The guiding mechanism includes:

[0007] A rotating arm rotatably mounted on the frame;

[0008] A pressing shaft assembly includes an intermediate block and rotating shafts elastically hinged to the left and right ends of the intermediate block. The intermediate block is arranged at the front end of the rotating arm and above the tape. Limiting rings are fixedly arranged on the sides of the rotating shafts away from each other. An elastic rope is connected between the intermediate block and the rotating arm;

[0009] A 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 make the rotating shafts rotate, 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 reel. In the bent state, the distance between the left and right ends of the pressing shaft assembly is less than the width of the winding groove;

[0010] A magnetic component is installed at the front end of the bottom of the rotating arm. Abutting rods are arranged on the left and right sides of the magnetic component. When the pressing shaft assembly passes below the magnetic component, the magnetic component attracts the intermediate block to make magnetic docking between the two. The two rotating shafts abut against the abutting rods and present a bent state;

[0011] When the rotating arm moves into the winding groove of the reel, the pressing shaft assembly switches to the bent state and finally switches to the unfolded state, so that the rotating shafts pass through the spoke holes, the inner sides of the limiting rings abut against the outer sides of the spoke holes, and the bottom of the pressing shaft assembly presses on the tape.

[0012] The effects are as follows: Before coiling, the head end of the strip needs to be fixed on the barrel shaft. At this time, the rotating arm is outside the winding groove, and the head end of the strip is outside the rotating arm. The bending mechanism causes the pressing shaft assembly to bend. Then the rotating arm enters the winding groove, and the pressing shaft assembly flattens and passes through the spoke holes on both sides, so that the strip is clamped between the pressing shaft assembly and the barrel shaft. When the coil rotates one circle, the head end of the strip is wound by the strip between the strip and the barrel shaft, and the pressing shaft assembly is attracted by the magnetic assembly, so that the pressing shaft assembly disengages from the spoke holes and bends again, so that the coil does not contact the pressing shaft assembly. The coil rotates to wind the remaining strip, which is convenient for fixing the end of the strip and does not affect the subsequent winding and use. After the winding is completed, when the rotating arm rotates upward until the abutting block is in the upper section, the two lower bottom plates rotate to make their bottom surfaces flush, reducing the magnetic force between the middle block and the magnetic block. The elastic rope pulls the middle block and the magnetic block apart, and the pressing shaft assembly resets. The middle block is re-docked with the limiting groove. Such a setting is convenient for resetting and can use the elastic band to provide a tightening force during the winding process to make the coil more compact.

[0013] Preferably, the rotating arm is composed of a rear end arm, an upper top plate and two lower bottom plates. The upper top plate is slidably installed at the front end of the rear end arm, and a telescopic drive source is installed between the two. The front end of the upper top plate is provided with a limiting groove adapted to the middle block to limit the position of the middle block. By controlling the relative sliding of the upper top plate through the telescopic drive source, the rotating shaft disengages from the abutting part, and the rotating shaft returns to the horizontal state under the action of elasticity, so that the pressing shaft assembly switches to the unfolded state.

[0014] Preferably, the two lower bottom plates are arranged below the upper top plate and are symmetrically arranged. A channel for the strip to pass through is formed between the upper top plate and the two lower bottom plates. The two abutting parts 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 relatively with the side where they are close to each other as the axis. The relative rotation of the two lower bottom plates reduces their overall width, so that they can enter the winding groove. At the same time, the abutting part rises against the rotating shaft, so that the pressing shaft assembly switches from the unfolded state to the bent state.

[0015] Preferably, the bending mechanism includes an abutting block fixedly installed at the rear end of the lower bottom plate. A sliding shaft is fixedly installed on the abutting block. An arc-shaped sliding groove matched with the sliding shaft is arranged at the front end of the rear end arm. The bending mechanism further includes a driving mechanism for driving the sliding shaft to slide along the sliding groove, and the relative rotation of the lower bottom plate is controlled by the sliding of the sliding shaft in the sliding groove.

[0016] Preferably, the driving mechanism includes an arc-shaped slide rail fixedly installed on the frame. The arc-shaped slide rail is coaxial with the rotation axis of the rotating arm. When the abutting block is at the top of the arc-shaped slide rail, the top of the abutting block abuts against the top of the arc-shaped slide rail, so that the bottom surfaces of the two lower bottom plates are flush. When the abutting block slides downward along the arc-shaped slide rail, the side surface of the abutting block abuts against the side surface of the arc-shaped slide rail, so that the two lower bottom plates rotate relative to each other. When the lower bottom plates are outside the material receiving groove, the top of the abutting block abuts against the top of the arc-shaped slide rail, so that the two lower bottom plates form a U shape. When the lower bottom plates enter the material receiving groove, the side surface of the abutting block abuts against the side surface of the arc-shaped slide rail, so that the two lower bottom plates rotate relative to each other to reduce their overall width, so that they can enter the material receiving groove.

[0017] Preferably, a bent 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 tape abuts against the bent rod, so that the cross-section of the material tape presents a bent shape. Since the material tape is relatively soft, when the end of the material tape enters the material receiving groove, it is easy to hang down, causing the middle part of the material tape to bend, thereby enhancing the strength of the material tape. When the end of the material tape enters the material receiving groove, it avoids the free hanging of the end of the material tape, making the end of the material tape tend to be horizontal. Then, the pressing shaft assembly slides down along the spoke hole and presses on the end of the material tape, thereby completing the fixation of the end of the material tape.

[0018] Preferably, the magnetic assembly includes two magnetic blocks capable of attracting the middle block. 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 approaches the magnetic blocks, the magnetic blocks attract the middle block, causing the pressing shaft assembly to disengage from the spoke hole. When the material tray rotates nearly one circle, the middle block moves below the magnetic blocks. Under the action of magnetic force, the middle block moves towards the magnetic blocks, and the rotating shaft no longer contacts the wall of the spoke hole. The middle block and the magnetic blocks complete magnetic docking, and the abutting rod abuts against the rotating shaft, causing the pressing shaft assembly to be in a bent state, and the elastic band presses the material tape to prevent the end of the material tape from falling off.

[0019] Preferably, a top-out assembly is installed between the two lower bottom plates. When the bottom surfaces of the two lower bottom plates are flush, the top-out assembly abuts against the middle part of the middle block to disengage the middle block from the magnetic block, facilitating the reset of the middle block.

[0020] Preferably, the top-out assembly includes two groups of V-shaped connecting rods. The V-shaped connecting rods are composed of two hinged connecting rods. The mutually remote ends of the two connecting rods are respectively hinged to the two lower bottom plates. A push rod capable of abutting against the middle block is connected between the two groups of V-shaped connecting rods. When the rotating arm rotates upward until the abutting block is in the upper section, the two lower bottom plates rotate to make their bottom surfaces flush. The V-shaped connecting rods push 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 blocks, and the elastic rope pulls the middle block and the magnetic blocks apart.

[0021] 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.

[0022] By adopting the above technical solution, the beneficial effects of the present invention are as follows:

[0023] 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.

[0024] 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.

[0025] 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

[0026] Figure 1 It is a structural schematic diagram of the present invention.

[0027] Figure 2 It is a structural schematic diagram of the operation step S1 of the present invention.

[0028] Figure 3 It is a schematic diagram of the structure of running steps S2 and S3 of the present invention.

[0029] Figure 4 It is a structural schematic diagram of running step S4 of the present invention.

[0030] Figure 5It is a structural schematic diagram of running step S5 of the present invention.

[0031] Figure 6 It is a structural schematic diagram of running step S6 of the present invention.

[0032] Figure 7 It is a schematic structural diagram of the pressure shaft assembly in the present invention.

[0033] Figure 8 It is a schematic diagram of the exploded structure of the rotating arm in the present invention.

[0034] Figure 9 for Figure 3 Schematic diagram of the enlarged structure at point A in the middle.

[0035] Figure 10 It is a schematic diagram of the structure of the arc-shaped slide rail in the present invention.

[0036] Figure 11 It is a schematic diagram of the structure of the magnetic block when the present invention runs step S6.

[0037] Figure 12 It is a structural schematic diagram of the connecting rod in the present invention.

[0038] Reference numerals:

[0039] 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

[0040] 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.

[0041] like Figure 1 and Figure 2As shown in the figure, the material tray 1 is usually integrally formed by plastic injection, and can be divided into a barrel shaft 11 and two retaining rings 12 respectively and coaxially fixed at 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 provided at the center of the barrel shaft 11. Sector-shaped spoke holes 121 are provided on the retaining rings 12. One side of the spoke holes 121 close to the barrel shaft 11 is flush with the outer circumferential surface of the barrel shaft 11. And the outer circumference of the barrel shaft 11 is provided with friction lines, which are used to increase the friction between the barrel shaft 11 and the end of the material tape to prevent the end of the material tape from falling off.

[0042] A winding device for tape packaging includes a frame 2, a spreading mechanism 3, a guiding mechanism 4, a feeding mechanism (not shown in the figure), and a driving source for driving the rotation of the material tray 1. The driving source is installed 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 installed 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 position of the driving shaft, the driving shaft extends and inserts into the driving hole, and then the rotation of the material tray 1 is controlled. When the material tray is full of the wound material tape, the driving shaft contracts and disengages from the driving hole, so that the material tray 1 drops. The feeding mechanism is installed on the frame and is used to convey the material tape into the guiding mechanism 4. The guiding mechanism 4 guides the material tape so that the material tape enters the material tray 1 for winding.

[0043] Since the plastic material tray 1 is prone to deformation during storage and transportation, the edges of the two retaining rings 12 are prone to move closer to the middle. At this time, it is necessary to set up a spreading mechanism 3 to expand the material receiving groove to the normal width so that the guiding mechanism 4 can bring the end of the material tape into the material receiving groove normally;

[0044] The spreading mechanism 3 includes a vertically arranged telescopic cylinder 31. The cylinder body of the telescopic cylinder 31 is fixedly installed 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 conical block 32. The diameter of the inverted conical block 32 is the same as the width of the material receiving groove. By controlling the telescopic cylinder 31 to lower the inverted conical block 32 into the material receiving groove, the inverted conical block 32 abuts against the retaining ring 12, so that the two retaining rings 12 are separated from each other, so as to spread the retaining rings 12 to both sides, so that the material receiving groove returns to the preset width, so that the front end of the guiding mechanism 4 can enter the material receiving groove. When the front end of the guiding mechanism 4 can enter the material receiving groove, the telescopic cylinder 31 controls the inverted conical block 32 to rise, so that the inverted conical block 32 disengages from the material receiving groove to avoid affecting the subsequent winding.

[0045] As Figure 1 and Figure 8As shown in the figure, the material guiding mechanism 4 includes a rotating arm 41, a pressing shaft assembly 42, a bending mechanism 43, and a magnetic assembly 44. A feeding hole penetrating through from front to back is provided at the center of the rotating arm 41, and the strip is passed through the feeding hole. The rear end of the rotating arm 41 is rotatably installed on the frame 2. A rotating drive source (such as a servo motor) for controlling the front half of the rotating arm 41 to enter or rotate out of the material receiving groove is installed inside the frame 2. 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 groove. The magnetic assembly 44 is arranged at the front end of the bottom of the rotating arm 41;

[0046] Before winding, the head end of the strip needs to be fixed on the barrel shaft 11. At this time, the rotating arm 41 is located outside the material receiving groove, and the head end of the 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 groove. The pressing shaft assembly 42 flattens and passes through the spoke holes 121 on both sides, so that the strip is clamped between the pressing shaft assembly 42 and the barrel shaft 11. When the material disk 1 rotates one circle, the head end of the strip is wound between the strip and the barrel shaft 11 by the strip. The pressing shaft assembly 42 is attracted by the magnetic assembly 44, so that the pressing shaft assembly 42 disengages from the spoke hole 121 and bends again, so that the material disk 1 does not contact the pressing shaft assembly 42, and the material disk 1 rotates to wind the remaining strip.

[0047] As Figure 7 , Figure 8 and Figure 9 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 convex portion on one side. The elastic rope 421 is connected between the convex portion 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 that of the rotating shaft 423 is fixedly provided at the 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);

[0048] The elastic rope 421 is divided into a front section and a rear section. The front section is connected to the intermediate block 422. The front section has a smaller elasticity (such as nylon material), and the outer surface of the front section has a coating for reducing the friction coefficient (such as Teflon coating). The rear section has a larger elasticity (such as rubber). Since the elastic band is longer, a winding wheel is installed on the rotating arm 41, and a volute spring is installed inside the winding wheel. The elastic rope 421 is wound around the winding wheel. In the initial state, the rear section is wound around the winding wheel by the winding wheel through the volute spring. In the winding state, the winding wheel rotates in the reverse direction to unwind the elastic rope 421, and at the same time, the rear section is stretched, so that the front section of the elastic rope 421 surrounds the outside of the material roll.

[0049] 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.

[0050] 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 rotation 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 protrusion and a square limiting groove 4131 in the figure) adapted to the protrusion 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 protrusion 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 protrusion 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 to form a U shape. A channel for the material tape to pass through is formed 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.

[0051] As Figure 7 、 Figure 9 and Figure 10As shown, the bending mechanism includes an abutting portion 431, a chute 432, an arc-shaped slide rail 433, a sliding shaft 434, and an abutting block 435. The two abutting portions 431 are respectively arranged at the front ends of the two lower bottom plates 415 and are located below the rotating shaft 423. The two chutes 432 are symmetrically arranged on the front end of the rear arm 412 on the left and right. The chute 432 is arc-shaped. The two abutting blocks 435 are respectively fixedly installed at the rear ends of the two lower bottom plates 415 and are symmetrically arranged left and right. At least two sliding shafts 434 are fixedly installed on each abutting block 435. The sliding shaft 434 is slidably installed in the chute 432, so that the lower bottom plate 415 can rotate around the side line at the inner top end thereof. 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 chute is provided in the middle of the arc-shaped slide rail 433, and the abutting block 435 is located in the arc-shaped chute and slides along the arc-shaped slide rail 433. The left and right side walls of the arc-shaped chute are symmetrically arranged and are divided into upper, middle, and lower 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;

[0052] When the abutting block 435 is located in the upper section, the top surface of the abutting block 435 abuts against the inner top surface of the arc-shaped chute of the arc-shaped slide rail 433, so that the bottom surfaces of the two lower bottom plates 415 are aligned. When the abutting block 435 is located in the middle section, the side surface of the abutting block 435 abuts against the side surface of the arc-shaped chute of the arc-shaped slide rail 433, so that the abutting block 435 and the sliding shaft 434 slide along the chute 432, thereby gradually inclining the two lower bottom plates 415. When the abutting block 435 is located in the lower section, a certain angle is formed between the bottom surfaces of the two lower bottom plates 415, 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 groove. At this time, the lower bottom plate 415 enters the material receiving groove.

[0053] As Figure 11 and Figure 12 shown, the magnetic component 44 includes two magnetic blocks 441 and an abutting rod 442. The two magnetic blocks 441 and the abutting rod 442 are symmetrically arranged in pairs on the two lower bottom plates 415 left and right. The cross-section of the magnetic block 441 is triangular, and the two magnetic blocks 441 are arranged diagonally. When a certain angle is formed between the bottom surfaces of the two lower bottom plates 415 and they enter the material receiving groove, the bottom surfaces of the two magnetic blocks 441 are flush. The abutting rod 442 is fixedly installed on the lower bottom plate 415, and there is a certain distance between the abutting rod 442 and the magnetic block 441. Thus, when the middle block 422 is magnetically docked with the magnetic block 441, the abutting rod 442 abuts against the rotating shaft 423, so that the pressing shaft assembly 42 is in a bent state.

[0054] As Figure 7 、 Figure 8 and Figure 12As shown in the figure, in order to enable the intermediate 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.

[0055] The ejection assembly 45 includes four connecting rods 451 and a push rod 452. The four connecting rods 451 are hinged in pairs at both ends of the push rod 452 to form two sets of V-shaped linkages. Relief grooves are provided on the lower bottom plates 415. The two ends of the V-shaped linkages are respectively hinged in the relief 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 receiving groove, the push rod 452 is located in the relief groove, and the lowermost end of the ejection assembly 45 is located above the bottom surface of the magnetic block 441. Therefore, at this time, the push rod 452 does not contact the intermediate block 422. When the bottom surfaces of the two lower bottom plates 415 are flush, the V-shaped linkages push 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 intermediate block 422, reducing the magnetic force between the intermediate block 422 and the magnetic block 441. At the same time, under the tension of the elastic rope 421, the intermediate block 422 is separated from the magnetic block 441, and the elastic rope 421 contracts to reset the pressing shaft assembly 42.

[0056] The working steps of the above winding device are as follows:

[0057] S1. Install the coil reel 1 on the driving end of the driving source, and the spoke holes 121 of the coil reel 1 are located at a predetermined angle. The strip passes through the feeding hole of the rotating arm 41, and the head end of the strip extends beyond the front end of the rotating arm 41 by a certain distance (the state at this time is referred to Figure 2 );

[0058] S2. The telescopic cylinder 31 controls the conical block 32 to descend into the receiving groove, thereby expanding the retaining ring 12 and restoring the receiving groove to the preset width (the state at this time is referred to Figure 3 );

[0059] S3. The rotating arm 41 rotates towards the direction close to the receiving groove, and the abutting 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 abutting portion 431 abuts against the rotating shaft 423, causing the pressing shaft assembly 42 to change 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 less than the width of the receiving groove (the state at this time is referred to Figure 3 );

[0060] S4. After the rotating arm 41 drives the pressing shaft assembly 42 to move to the receiving groove, the telescopic driving source 414 pushes the upper top plate 413 to slide forward until the rotating shaft 423 disengages from the abutting portion 431. At the same time, the pressing shaft assembly 42 is located between the spoke holes 121 on both sides. The pressing shaft assembly 42 changes from the bent state to the unfolded state, and the rotating shaft 423 passes through the spoke hole 121, and the limiting ring 4231 is located outside the coil reel 1 (the state at this time is referred to Figure 4 );

[0061] S5. Start the drive source to slowly rotate the material tray 1. The rotating shaft 423 abuts against the inner wall of the spoke hole 121, so that the intermediate block 422 pulls the elastic rope 421 out of the limit groove 4131. At the same time, the pressing shaft assembly 42 slides along the inner wall of the spoke hole 121 towards the center of the material tray 1, so that the head end of the material tape is pressed between the pressing shaft assembly 42 and the barrel shaft 11 and rotates with the material tray 1 together (the state at this time refers to Figure 5 );

[0062] S6. When the material tray 1 rotates close to one circle, the intermediate block 422 moves below the magnetic block 441. The intermediate block 422 moves towards the magnetic block 441 under the action of magnetic force. The rotating shaft 423 no longer contacts the wall of the spoke hole 121. The intermediate block 422 completes magnetic docking with the magnetic block 441. The abutting rod 442 abuts against the rotating shaft 423, making the pressing shaft assembly 42 in a bent state. The elastic band presses the material tape to prevent the end of the material tape from falling off (the state at this time refers to Figure 6 );

[0063] S7. The drive source makes the material tray 1 rotate faster. At the same time, the rotating arm 41 gradually rotates upward. The front section of the elastic band presses the material tape, so that the material tape is wound tightly;

[0064] S8. When the material tape is full in the material collection groove, the tail end of the material tape is cut off;

[0065] S9. When the rotating arm 41 rotates upward until the abutting block 435 is located in the upper section, the two lower bottom plates 415 rotate to be flush with the bottom surface. 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 intermediate block 422, reducing the magnetic force between the intermediate block 422 and the magnetic block 441. The elastic rope 421 pulls the intermediate block 422 to separate from the magnetic block 441. The pressing shaft assembly 42 resets, and the convex part of the intermediate block 422 re-enters the limit groove 4131 (the state at this time refers to Figure 2 ).

[0066] In the above work process, the pressing shaft assembly 42 can conveniently roll up the end of the material tape. And during the winding process, the front section of the elastic rope 421 presses the material tape to make the material tape wind more tightly. After the winding is completed, the pressing shaft assembly 42 disengages and automatically resets under the action of the elastic band, which is convenient for the next winding.

[0067] Such as Figure 11 and Figure 12As shown, since the strip is relatively soft, it is easy to droop after the end enters the material receiving groove, which may cause the pressing shaft assembly 42 to be unable to press down the end of the 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 strip abuts against the bending rod 4132, so that the cross-section of the strip presents a bent shape, thereby enhancing the strength of the strip and preventing the end of the strip from drooping freely.

[0068] Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention. Those of ordinary skill in the art can make changes, modifications, substitutions, and variations to the above embodiments within the scope of the present invention.

Claims

1. A winding device for roll packaging, comprising a frame, a material guide mechanism and a driving source for driving a material tray to rotate, characterized in that: The material guiding mechanism comprises: 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, a torsion spring is arranged at the hinge, the middle block is arranged at the front end of the rotating arm and above the material belt, a limiting ring is fixedly arranged on the side where the rotating shafts are away from each other, and 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 receiving slot of the material tray, 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; The rotating arm is composed of a rear arm, an upper top plate and two lower bottom plates. The upper top plate is slidably mounted on the front end of the rear arm, and a telescopic driving source is installed between the two. A limiting groove matching the middle block is arranged at the front end of the upper top plate, thereby limiting the position of the middle block. A feeding hole that runs through the front and back is opened at the center of the rotating arm, and the material belt passes through the feeding hole; 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 the side close to each other as the axis. A bending rod is provided at the bottom of the upper top plate, and when the two lower bottom plates rotate relative to each other, the middle of the upper surface of the material strip abuts against the bending rod, so that the cross section of the material strip presents a bending shape; 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.

2. The winding device for tape packaging according to claim 1, characterized in that: The bending mechanism includes an abutment block fixedly mounted on the rear end of the lower base plate, a sliding shaft fixedly mounted on the abutment block, an arc-shaped sliding groove matching the sliding shaft is arranged 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.

3. The winding device for tape packaging according to claim 2, characterized in that: The driving mechanism includes an arc-shaped slide rail fixedly mounted on the frame, the arc-shaped slide rail is coaxial with the rotation axis of the rotating arm, 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.

4. The winding device for tape packaging according to claim 3, characterized in that: The magnetic assembly includes two magnetic blocks capable of attracting the middle block. 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 approaches the magnetic block, the magnetic block attracts the middle block, so that the pressure shaft assembly is separated from the spoke hole.

5. The winding device for tape packaging according to claim 4, characterized in that: 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 respectively hinged to the two lower bottom plates. A push rod that can resist the middle block is connected between the two groups of V-shaped connecting rods.

6. The winding device for tape packaging according to claim 4, characterized in that: The lower bottom plate and the magnetic block are provided with clearance grooves, and the connecting rods are installed in the clearance grooves.

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