A glass paper tube wrapping mechanism, wrapping apparatus and wrapping method

Abstract

The application discloses a glass paper tube wrapping mechanism, a wrapping device and a wrapping method, and the mechanism comprises a rack, a main jacking mechanism, a bottom pushing and folding mechanism, a pre-folding positioning mechanism located at a first side of the tube, and a covering and folding mechanism located at a second opposite side, wherein each mechanism is connected to an output end of the main jacking mechanism. The pre-folding positioning mechanism comprises a pre-folding piece and a pressing and holding piece, the pre-folding piece is used for pre-folding one side edge of the glass paper, and the pressing and holding piece is used for pressing and positioning the pre-folded side edge; in the state that the pressing and holding piece is kept pressing and holding, the pre-folding piece can be separated from a wrapping area or kept away from a movement path of the covering and folding mechanism; and the covering and folding mechanism is used for folding and covering the other side edge on the side edge which has been pressed and positioned. Through cooperation of pressing and keeping away, the application solves the problems of unstable positioning, easy wrinkling and edge lifting of the glass paper in pure mechanical wrapping, and has stable wrapping quality, short rhythm and low cost.

Description

Technical Field

[0001] This application relates to the field of yarn tube packaging equipment, and in particular to a cellophane yarn tube wrapping mechanism, wrapping equipment and wrapping method. Background Technology

[0002] In the textile industry, to protect the yarn and improve the stability of the yarn bobbin during transportation and subsequent processing, a layer of cellophane is usually wrapped around the outer surface of the yarn bobbin. With the increasing automation of production, the yarn bobbin wrapping process is gradually shifting from manual operation to mechanization and automation.

[0003] In existing technologies, one type of wrapping equipment uses heat sealing to wrap and fix cellophane. Although this method can achieve a certain degree of automation, it usually requires a heating and cooling process, resulting in a long wrapping cycle for a single yarn tube, making it difficult to meet the requirements of high-efficiency continuous production. At the same time, the setting of the heat sealing mechanism and its supporting control components also makes the overall structure of the equipment more complex, resulting in higher manufacturing and maintenance costs.

[0004] Another type of equipment uses a purely mechanical method to fold and wrap the cellophane. However, the existing mechanical wrapping structure is often not perfect in terms of cellophane bonding control. Especially in the process of pre-folding one side and then covering the other side, the cellophane is prone to not being tightly bonded to the outer periphery of the yarn tube due to unstable positioning of the cellophane after pre-folding and interference between the folding parts, or wrinkles and curling edges, which affect the wrapping quality and appearance consistency. Summary of the Invention

[0005] The purpose of this application is to provide a cellophane wrapping mechanism, wrapping equipment and wrapping method to solve the problems of long cycle time, complex structure and high cost when using heat sealing method in the prior art, as well as the technical problems such as unstable positioning of cellophane after pre-folding and mutual interference of folding parts when using pure mechanical method, resulting in loose fit, wrinkles and curling edges, etc., so as to achieve high-quality, high-efficiency and low-cost automated wrapping of cellophane tubes.

[0006] A cellophane tube wrapping mechanism includes: a frame, a main lifting mechanism, a bottom folding mechanism, a pre-folding positioning mechanism, and a covering and folding mechanism; the main lifting mechanism is mounted on the frame; the bottom folding mechanism is connected to the output end of the main lifting mechanism; the pre-folding positioning mechanism is connected to the output end of the main lifting mechanism and located on a first side of the cellophane tube to be wrapped; the covering and folding mechanism is connected to the output end of the main lifting mechanism and located on a second side of the cellophane tube opposite to the first side; wherein, the main lifting mechanism is used to drive the bottom folding mechanism, the pre-folding positioning mechanism, and the covering and folding mechanism to move up and down between a clearance position and a working position; the bottom folding mechanism is used to... The bottom of the cellophane below the yarn tube is folded towards the yarn tube; the pre-folding positioning mechanism includes a pre-folding component and a pressing component. The pre-folding component is used to pre-fold the first side of the cellophane towards the outer periphery of the yarn tube, and the pressing component is used to press and position the pre-folded first side. The pre-folding positioning mechanism is configured such that, while the pressing component is holding and positioning the first side of the cellophane, the pre-folding component can move to move out of the wrapping area or avoid the movement path of the overlapping folding mechanism; the overlapping folding mechanism is used to fold the second side of the cellophane towards the outer periphery of the yarn tube and cover the first side that has been pressed and positioned.

[0007] Furthermore, the pre-folded component includes a first folding plate, a first front-to-back driving device, and a first rotation driving device; the first front-to-back driving device is driven to the first folding plate to drive the first folding plate to move closer to or away from the cellophane; the first rotation driving device is driven to the first folding plate to drive the first folding plate to rotate around a first rotating axis, thereby performing the pre-folding action and the action of leaving the wrapping area or avoiding it.

[0008] Furthermore, the pressing member includes a first pressing claw, a second front-to-back driving device, and a second rotation driving device;

[0009] The second front and rear driving device is connected to the first pressure claw to drive the first pressure claw to move closer to or away from the cellophane;

[0010] The second rotary drive device is connected to the first pressure claw drive to drive the first pressure claw to rotate around the second rotating shaft to the pressing position or away from the pressing position.

[0011] Furthermore, the first rotary drive device and the second rotary drive device are cylinders, which drive the first folding plate and the first pressure claw to rotate by lifting upwards, respectively.

[0012] Furthermore, the overlay and folding mechanism includes a second folding plate, a third front and rear driving device, and a third rotary driving device;

[0013] The third front and rear driving device is driven to the second folding plate to drive the second folding plate closer to or away from the cellophane.

[0014] The third rotation drive device is connected to the second folding plate to drive the second folding plate to rotate, thereby performing the lamination action, and lifting it up to remove it from the wrapping area and resetting it after lamination is completed.

[0015] Furthermore, the bottom folding mechanism includes:

[0016] The lifting and clamping block is located in the middle; and

[0017] The first lifting and pushing block and the second lifting and pushing block are located on both sides of the lifting and pressing block, respectively;

[0018] In the initial state, the top height of the lifting and pressing block is higher than the top height of the first lifting and pushing block and the second lifting and pushing block, so that the middle part of the cellophane is first pressed towards the bottom of the yarn tube, and the two sides are then pushed upward.

[0019] Furthermore, a soft pressure block is provided at the top of the lifting and pressing block, and a lifting spring is provided below the lifting and pressing block. The lifting spring is used to provide an upward elastic preload to the lifting and pressing block.

[0020] Furthermore, it also includes a first air blowing device and / or a second air blowing device, wherein the first air blowing device is disposed adjacent to the pre-folding positioning mechanism and is used to blow airflow onto the cellophane on the first side to assist pre-folding; and the second air blowing device is disposed adjacent to the laminating and folding mechanism and is used to blow airflow onto the cellophane on the second side to assist laminating.

[0021] This application also proposes a cellophane tube wrapping device, including a cellophane tube wrapping mechanism and a tube clamping mechanism, which is installed on the frame and used to clamp and fix the tube.

[0022] A cellophane transfer mechanism, installed on the frame, is used to transport cellophane to the wrapping position below the yarn tube.

[0023] This application also proposes a method for wrapping cellophane yarn tubes, including the following steps:

[0024] Position the yarn tube and place the cellophane below the yarn tube at the wrapping position;

[0025] The main lifting mechanism is driven to rise, so that the bottom pushing and folding mechanism, the pre-folding and positioning mechanism, and the overlapping and folding mechanism are all put into the packaging working position.

[0026] The bottom folding mechanism operates, pushing and folding the bottom of the cellophane towards the yarn tube;

[0027] The pre-folding mechanism's pre-folding action folds the first side edge of the cellophane towards the outer periphery of the yarn tube;

[0028] The pressing component of the pre-folding positioning mechanism presses and positions the first side edge after pre-folding.

[0029] While the holding member is in a holding state, the pre-folded member moves in the opposite direction, detaching from the wrapping area or avoiding the wrapping path;

[0030] The folding mechanism folds the second side of the cellophane towards the outer periphery of the yarn tube and covers the first side that is being held in place, thus completing the wrapping process.

[0031] The beneficial effects of this application are as follows:

[0032] (1) This application sets up a pre-folding component and a pressing component that are independent yet cooperate with each other. After the pre-folding component completes the pre-folding action on one side of the cellophane, the pressing component immediately and continuously presses and positions the pre-folded cellophane, so that the cellophane remains stable in the subsequent processing. On this basis, the pre-folding component is configured to be able to leave the wrapping area or avoid the movement path of the laminating and folding mechanism, thereby providing sufficient clearance for the laminating action without interrupting the pressing and positioning. This design fundamentally solves the problems of positioning offset, loose bonding, and wrinkles and curling edges caused by the interference between the pre-folding component and the laminating component and the lack of effective constraint on the pre-folded cellophane in the prior art, and significantly improves the stability of the wrapping quality and the consistency of the appearance.

[0033] (2) This application adopts a purely mechanical folding and wrapping method, which does not require the setting of a heat sealing mechanism and supporting heating, cooling and temperature control components. On the one hand, it avoids the time consumed by the heating and cooling process, and the cycle time of a single package is significantly shortened, which can meet the requirements of high-efficiency continuous production. On the other hand, the overall structure is relatively simple, the manufacturing and maintenance costs are lower, and the stability and reliability of the equipment operation are also improved accordingly.

[0034] (3) The pre-folding positioning mechanism and the laminating and folding mechanism of this application are respectively arranged on both sides of the yarn tube, naturally avoiding each other in space. In terms of action sequence, they are connected in an orderly manner through the steps of "pre-folding - pressing - pre-folding part avoiding - laminating", and the motion interference between the mechanisms is effectively avoided. In particular, the pre-folding part actively detaches or avoids the pressing part while it is being pressed, so that the laminating and folding mechanism can fold the other side of the cellophane flat and cover the positioned side without obstruction, which in principle ensures the flatness and fit of the wrapping.

[0035] (4) The bottom folding mechanism of this application sets the height of the central lifting and pressing block higher than that of the two side lifting and folding blocks, so that the middle part of the cellophane is first flexibly pressed against the bottom of the yarn tube, which plays a role in pre-positioning and flattening, and then the two sides are pushed upward. This gradient action method is conducive to expelling the air between the cellophane and the yarn tube, reducing bulging and wrinkles. At the same time, the setting of soft pressing block and elastic pre-tightening force can adapt to the slight dimensional deviations of different yarn tubes and cellophane, avoiding damage to the yarn tube or cellophane caused by hard compression.

[0036] (5) This application sets up an air blowing device through the adjacent pre-folding positioning mechanism and / or the overlapping folding mechanism to blow auxiliary airflow onto the cellophane during the folding action, which can help the cellophane edge to better adhere to the surface of the folding plate or the outer periphery of the yarn tube. Especially for thinner or softer cellophane, it can effectively prevent the edge from sagging or not folding properly, further improving the wrapping success rate and appearance quality. Attached Figure Description

[0037] Figure 1 This is a schematic diagram of the structure of a cellophane tube wrapping mechanism provided in an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of the structure of a pre-folded component provided in one embodiment of this application;

[0039] Figure 3 This is a schematic diagram of the structure of a pressing member provided in an embodiment of this application;

[0040] Figure 4 This is a schematic diagram of the structure of the overlay and folding mechanism provided in one embodiment of this application;

[0041] Figure 5 This is a schematic diagram of the bottom folding mechanism provided in one embodiment of this application;

[0042] Figure 6 This is a front view schematic diagram of a cellophane tube wrapping mechanism provided in an embodiment of this application;

[0043] Figure 7 A flowchart illustrating the steps of the cellophane wrapping method provided in this application. Detailed Implementation

[0044] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be described in detail below with reference to the accompanying drawings. It should be noted that the following embodiments are only used to explain this application and do not constitute a limitation on the scope of protection of this application. All other embodiments obtained by those skilled in the art based on the following embodiments without inventive effort are within the scope of protection of this application.

[0045] Reference Figure 1This application provides a cellophane tube wrapping mechanism, including a frame 100, a main lifting mechanism 200, a bottom pushing and folding mechanism 300, a pre-folding and positioning mechanism 400, and a covering and folding mechanism 500.

[0046] The frame 100 serves as the mounting base for the entire packaging mechanism. Its specific structural form can be adapted to the production line layout, such as using a frame-type, table-type, or suspended structure. This application does not impose any restrictions on this.

[0047] like Figure 1 As shown, the main lifting mechanism 200 is mounted on the frame 100 and has an output end that can be raised and lowered vertically. The bottom folding mechanism 300, the pre-folding positioning mechanism 400, and the covering and folding mechanism 500 are all connected to the output end of the main lifting mechanism 200, so that they can rise and fall with the output end as a whole between the yielding position and the working position. The yielding position refers to the above-mentioned mechanisms being in a low position away from the yarn tube 900 to facilitate the loading and unloading of the yarn tube 900 and the feeding of the cellophane 800; the working position refers to the above-mentioned mechanisms being raised to a high position close to the yarn tube 900, capable of performing the wrapping action.

[0048] The main lifting mechanism 200 includes a lifting drive device 201 and a guide column and guide sleeve assembly 202.

[0049] The specific driving form of the lifting drive device can be a linear drive device such as a pneumatic cylinder, hydraulic cylinder, electric cylinder, or motor-screw, as long as it can achieve the above-mentioned lifting function.

[0050] like Figure 1 As shown, the pre-folding positioning mechanism 400 and the overlapping folding mechanism 500 are located on opposite sides of the yarn tube 900 to be wrapped. For ease of description, the side where the pre-folding positioning mechanism 400 is located is defined as the first side, and the side where the overlapping folding mechanism 500 is located is defined as the second side. In actual layout, for example, the pre-folding positioning mechanism 400 can be placed on the front or left side of the yarn tube 900, and the overlapping folding mechanism 500 can be placed on the rear or right side of the yarn tube 900.

[0051] The bottom folding mechanism 300 is located directly below the yarn tube 900 and is used to fold the bottom of the cellophane 800 located below the yarn tube 900 from bottom to top toward the yarn tube 900 so that it fits into the bottom area of ​​the yarn tube 900.

[0052] like Figure 2 As shown, the pre-folding positioning mechanism 400 includes a pre-folding member 410 and a holding member 420. The pre-folding member 410 is used to pre-fold the first side of the cellophane 800 towards the outer periphery of the yarn tube 900; the holding member 420 is used to apply a continuous holding force to the pre-folded first side immediately after the pre-folding action is completed, so as to keep it in position.

[0053] like Figure 3As shown, the pre-folding positioning mechanism 400, while the holding member 420 holds and positions the first side edge of the cellophane 800, allows the pre-folding member 410 to move independently away from the wrapping area or to move outside the movement path of the overlapping and folding mechanism 500. In other words, the holding and positioning function and the pre-folding execution function are relatively independent in action. After the pre-folding member 410 completes the pre-folding, the holding member 420 takes over and holds the positioning task, and the pre-folding member 410 can actively exit the wrapping area to make room for subsequent processes.

[0054] The overlapping and folding mechanism 500 is used to fold the second side of the cellophane 800 toward the outer periphery of the yarn tube 900 and make it cover the first side that has been pressed and positioned, thereby achieving the overlapping of the edges of the two layers of cellophane and completing the wrapping.

[0055] The following section provides a detailed explanation of the specific structure of each component.

[0056] Reference Figure 2 and Figure 3 The pre-folded component 410 includes a first folding plate 411, a first front and rear driving device 412, and a first rotation driving device 414.

[0057] like Figure 2 As shown, the first folding plate 411 has a working surface adapted to the outer periphery of the yarn tube 900. This working surface is preferably arc-shaped so that the cellophane 800 can be smoothly pressed against the surface of the yarn tube 900 during pre-folding. A first front-to-back drive device 412 is drivenly connected to the first folding plate 411 to drive the first folding plate 411 to move in a direction closer to or away from the cellophane 800. Specifically, the first front-to-back drive device 412 may be a cylinder, the cylinder body of which is mounted on the first rotating seat 415, and its piston rod is connected to the first folding plate 411. The first folding plate 411 is mounted on the first rotating seat via a first slide rail 416, thereby realizing front-to-back movement.

[0058] The first rotary drive device 414 is driven to connect with the first rotary seat 415 and is used to drive the first folding plate 411 to rotate around the first rotating shaft 413. This rotary motion has two functions: first, it rotates in the forward direction to perform a pre-folding action, that is, to push the first side edge upward and fold it against the outer periphery of the yarn tube 900; second, after the pressing member 420 achieves pressing and positioning, it rotates in the reverse direction or continues to rotate in the forward direction to make the first folding plate 411 disengage from the wrapping area, thereby avoiding the overlapping folding mechanism 500.

[0059] like Figure 3As shown, the pressing member 420 includes a first pressing claw 421, a second front-rear driving device 422, and a second rotation driving device 424. The second front-rear driving device 422 is drivenly connected to the first pressing claw 421 and is used to drive the first pressing claw 421 to move closer to or away from the cellophane 800. The first pressing claw 421 is mounted on the second rotating seat 425 via a second slide rail. The second rotation driving device 424 is drivenly connected to the second rotating seat and is used to drive the first pressing claw 421 to rotate around the second rotating shaft 423, so that it can rotate to the pressing position to apply a continuous pressing force to the pre-folded cellophane 800, or rotate away from the pressing position to achieve reset.

[0060] In a preferred embodiment, both the first rotary drive device 414 and the second rotary drive device 424 employ cylinders, driven by an upward lifting mechanism. Specifically, when the piston rod of the cylinder extends upward, it pushes the first or second rotating seat to rotate around the first rotating shaft 413 or the second rotating shaft 423, thereby causing the first folding plate 411 or the first pressing claw 421 to perform corresponding rotational actions. The cylinder-driven lifting method is simple in structure, has a fast response speed, and possesses good adaptability. It can buffer slight changes in resistance to prevent damage to the yarn tube 900 and the cellophane 800.

[0061] like Figure 1 As shown, the holding members 420 are preferably in two sets, respectively disposed on both sides of the pre-folded member 410 along the axial direction of the yarn tube 900. In this way, the holding members 420 can hold and position the two ends of the pre-folded cellophane 800, while the pre-folded member 410 is withdrawn from the middle area, thereby achieving spatial coordination between holding and positioning and pre-folding member avoidance.

[0062] Reference Figure 1 and Figure 4 The overlay and folding mechanism 500 includes a second folding plate 511, a third front and rear drive device 512, and a third rotary drive device 513.

[0063] The second folding plate 511 has a working surface adapted to the outer periphery of the yarn tube 900. A third front-to-back drive device 512 is driven by the second folding plate 511 to drive it closer to or further away from the cellophane 800. The second folding plate 511 is mounted on a third rotating seat 515 via a third slide rail 514. A third rotation drive device 513 is driven by the third rotating seat to drive the second folding plate 511 to rotate. This rotation has two functions: first, forward rotation to perform a covering action, i.e., pushing the second side edge towards the outer periphery of the yarn tube 900 and covering the first side edge; second, after covering, reverse rotation to lift the second folding plate 511 away from the wrapping area and reset it.

[0064] During the lamination process, since the pre-folded part 410 has been avoided in advance, the second folding plate 511 can fold the second side completely into place without obstruction and overlap it tightly with the first side, ensuring the flatness of the package.

[0065] Reference Figure 5 The bottom push-folding mechanism 300 includes a lifting and pressing block 310, a first lifting and pushing block 321, and a second lifting and pushing block 322.

[0066] The lifting and pressing block 310 is located in the middle, and the first lifting and pushing block 321 and the second lifting and pushing block 322 are located on both sides of the lifting and pressing block 310. In the initial state (i.e., before contact with the cellophane 800), the top height of the lifting and pressing block 310 is higher than the top height of the first lifting and pushing block 321 and the second lifting and pushing block 322.

[0067] This height difference creates a gradient folding effect: when the main lifting mechanism 200 drives the bottom folding mechanism 300 to rise as a whole, the lifting and pressing block 310 first contacts the middle of the cellophane 800 and flexibly presses it against the bottom of the yarn tube 900, serving as a pre-positioning and flattening function; as it continues to rise, the first lifting and folding block 321 and the second lifting and folding block 322 on both sides then contact the cellophane 800, pushing the bottom areas of the cellophane 800 upwards so that it fits against the lower sides of the yarn tube 900. This "middle first, then sides" folding method helps to expel air between the cellophane 800 and the yarn tube 900 during the folding process, reducing bulges and wrinkles.

[0068] Furthermore, the top of the lifting and clamping block 310 is provided with a soft pressure block 311, which can be made of elastic materials such as rubber, silicone, or polyurethane. This soft pressure block 311 provides flexible contact during the clamping process, preventing indentations or damage to the surfaces of the yarn tube 900 and the cellophane 800. A lifting spring 312 is provided below the lifting and clamping block 310, which provides an upward elastic preload to the lifting and clamping block 310. With this elastic preload, when the lifting and clamping block 310 reaches the bottom of the yarn tube 900, even minor dimensional deviations can be compensated for by the compression of the spring, ensuring the clamping effect while avoiding excessive pressure.

[0069] The first lifting and folding block 321 and the second lifting and folding block 322 are respectively provided with arc-shaped pressing grooves 3211 that are adapted to the outer circular contour of the yarn tube 900, so as to ensure that they can fit well with the outer circumferential curved surface of the yarn tube 900 during the folding process, and further improve the folding quality.

[0070] As a further optimization, the wrapping mechanism of this application also includes a first air blowing device 910 and / or a second air blowing device 920 (not shown in the figure). The first air blowing device is located adjacent to the pre-folding positioning mechanism 400, with its air blowing port facing the area where the cellophane 800 is located on the first side. It is used to blow airflow onto the cellophane 800 during the pre-folding process, using the airflow to assist in lifting or guiding the edge of the cellophane 800, so that it fits more smoothly against the working surface of the first folding plate 411, preventing the edge from sagging or not folding properly. The second air blowing device is located adjacent to the laminating folding mechanism 500, with its air blowing port facing the area where the cellophane 800 is located on the second side. It is used to provide a similar auxiliary airflow during the laminating process. The air supply source for the air blowing device can be a compressed air pipeline, and the start, stop, and timing of the air blowing can be controlled by a solenoid valve to coordinate with each folding action.

[0071] In addition, a silicone pad (not shown in the figure) may be provided at the bottom of the first folding plate 411. The silicone pad provides moderate cushioning and greater friction when it comes into contact with the cellophane 800 during the folding process, so that the cellophane can maintain better folding force during the pushing and folding process.

[0072] Reference Figure 1 This application also provides a cellophane tube wrapping device, which includes the cellophane tube wrapping mechanism described in any of the above embodiments, as well as a tube clamping mechanism 600 and a cellophane transfer mechanism (not shown in the figure).

[0073] A yarn tube clamping mechanism 600 is mounted on the frame 100 and is used to clamp and fix the yarn tube 900. Preferably, the yarn tube clamping mechanism 600 is an internal support type clamp, which can pass through the inner hole of the yarn tube 900 and stretch outward to keep the yarn tube 900 in a horizontal clamping state. The specific structure of the internal support type clamp can adopt a pneumatic expansion shaft or a mechanical expansion shaft commonly used in the prior art, and this application does not limit it in this regard. By adopting an internal support type clamping method, interference with the outer periphery of the yarn tube 900 can be avoided, leaving complete operating space for the wrapping action.

[0074] The yarn tube clamping mechanism 600 can also be equipped with a rotary drive device, which enables the yarn tube 900 to rotate around its own axis during the wrapping process, so as to facilitate the inspection of the wrapping quality or to cooperate with subsequent labeling and other processes after the wrapping is completed.

[0075] A cellophane transfer mechanism (not shown in the figure) is mounted on the frame 100 and is used to transport cellophane 800 from the feeding position to the wrapping position below the yarn tube 900. The cellophane transfer mechanism 700 includes a traversing module and a clamping device. The clamping device is used to hold the edge of the cellophane 800, and it can be a pneumatic gripper or a mechanical gripper; the traversing module is used to drive the clamping device to reciprocate between the feeding position and the wrapping position. The traversing module can be a conventional linear drive component such as a rodless cylinder, a synchronous belt module, or a lead screw module.

[0076] like Figure 6 As shown, the equipment may also include a labeling device. The labeling device 940, mounted on the frame 100, is used to affix labels to a localized area of ​​the outer surface of the cellophane 800 after wrapping. The labeling position can be set at any suitable location on the wrapped cellophane 800 as needed. The labeling device includes a label suction head, a rotary drive, and a linear drive. The label suction head, connected to a negative pressure air source, is used to suction the label using negative pressure; the rotary drive and linear drive work together to move the label suction head between the label-taking position and the labeling position and to adjust its posture, thereby achieving accurate label application. The introduction of the labeling device allows wrapping and labeling to be completed continuously at the same or adjacent workstations, improving production efficiency and automation levels.

[0077] Reference Figure 7 Based on the above structural description of the cellophane tube wrapping mechanism and wrapping equipment, the cellophane tube wrapping method provided in this application includes the following steps:

[0078] Step S1: Position the yarn tube 900 and place the cellophane 800 below the yarn tube 900 at the wrapping position. Specifically, the yarn tube 900 is clamped and fixed by the yarn tube clamping mechanism 600 in an internal support manner to maintain a horizontal posture; the cellophane 800 is clamped and transported from the feeding position by the cellophane transfer mechanism to the wrapping position directly below the yarn tube 900 and laid flat.

[0079] Step S2: Drive the main lifting mechanism 200 upward, causing the bottom folding mechanism 300, pre-folding positioning mechanism 400, and overlapping folding mechanism 500 to move from their yielding positions into the wrapping working positions. At this time, each mechanism is positioned around the yarn tube 900, ready to perform the wrapping action.

[0080] Step S3: The bottom folding mechanism 300 operates, folding the bottom of the cellophane 800 toward the yarn tube 900. In this step, the lifting and pressing block 310 first contacts the middle of the cellophane 800, flexibly pressing it against the bottom of the yarn tube 900, serving as a pre-positioning and flattening function; subsequently, the first lifting and folding block 321 and the second lifting and folding block 322 rise, pushing the bottom areas on both sides of the cellophane 800 upward, so that it fits against the lower sides of the yarn tube 900.

[0081] Step S4: The pre-folding component 410 of the pre-folding positioning mechanism 400 is activated, pre-folding the first side edge of the cellophane 800 towards the outer periphery of the yarn tube 900. Specifically, the first front and rear driving device 412 drives the first folding plate 411 to approach the cellophane 800, and then the first rotation driving device 414 drives the first folding plate 411 to rotate around the first rotating shaft 413, folding the first side edge upward and pressing it against the outer periphery of the yarn tube 900.

[0082] Step S5: The pressing member 420 of the pre-folding positioning mechanism 400 is activated to press and position the first side of the pre-folded cellophane 800. Specifically, the second front and rear driving device 422 drives the first pressing claw 421 to approach the yarn tube 900, and the second rotary driving device 424 drives the first pressing claw 421 to rotate around the second rotating shaft 423 to the pressing position, applying a continuous pressing force to the first side of the pre-folded cellophane 800.

[0083] Step S6: With the holding member 420 maintaining the holding position, the pre-folded member 410 reverses its movement, disengaging from the wrapping area or moving out of the lamination path. Specifically, the first rotary drive device 414 drives the first folding plate 411 to rotate in the opposite direction, causing the first folding plate 411 to leave the wrapping area, making room for the lamination folding mechanism 500 to enter and operate. During this process, the holding member 420 remains in the holding position to ensure that the first side edge does not shift or loosen.

[0084] Step S7: The overlapping and folding mechanism 500 operates, folding the second side of the cellophane 800 towards the outer periphery of the yarn tube 900 and covering it over the first side that has been pressed, thus completing the wrapping. Specifically, the third front and rear driving device 512 drives the second folding plate 511 to approach the cellophane 800, and the third rotation driving device 513 drives the second folding plate 511 to rotate, folding the second side towards the outer periphery of the yarn tube 900 and overlapping it over the first side that has been pressed and positioned, thus achieving the overlap of the two layers of edges.

[0085] After the package is completed, a reset step is performed: the second folding plate 511 of the overlapping and folding mechanism 500 is lifted up and removed from the package area and resets; after the overlapping and folding mechanism 500 is reset, the first pressure claw 421 of the pressing member 420 is lifted up and removed from the package area and resets; finally, the main lifting mechanism 200 descends, causing the bottom pushing and folding mechanism 300, the pre-folding positioning mechanism 400 and the overlapping and folding mechanism 500 to retract to the clearance position as a whole.

[0086] After the packaging is completed, labels can be affixed to the outer surface of the package. This labeling step is performed by a labeling device: the label suction head picks up the label from the label feeder, and under the coordinated drive of the rotary drive and the linear drive, the label is transferred and affixed to the outer surface of the cellophane 800 after packaging.

[0087] The above description is merely a preferred embodiment of this application and does not limit the patent scope of this application. Any equivalent structural transformations made based on the inventive concept of this application and the contents of the specification and drawings of this application, or direct / indirect applications in other related technical fields, are included within the patent protection scope of this application.

Claims

1. A cellophane yarn tube wrapping mechanism, characterized in that, include: frame; The main lifting mechanism is mounted on the frame; The bottom push-folding mechanism is connected to the output end of the main lifting mechanism; A pre-folding positioning mechanism is connected to the output end of the main lifting mechanism and is located on the first side of the yarn tube to be wrapped; as well as The overlay and folding mechanism is connected to the output end of the main lifting mechanism and is located on the second side of the yarn tube to be wrapped, opposite to the first side. The main lifting mechanism is used to drive the bottom pushing and folding mechanism, the pre-folding and positioning mechanism and the overlapping and folding mechanism to move up and down between the clearance position and the working position. The bottom folding mechanism is used to fold the bottom of the cellophane located below the yarn tube toward the yarn tube; The pre-folding and positioning mechanism includes a pre-folding component and a pressing component. The pre-folding component is used to pre-fold the first side of the cellophane towards the outer periphery of the yarn tube, and the pressing component is used to press and position the pre-folded first side. The pre-folding positioning mechanism is configured such that, while the pressing member is holding and positioning the first side edge of the cellophane, the pre-folding member can move to move out of the wrapping area or avoid the movement path of the overlay folding mechanism. The overlay and folding mechanism is used to fold the second side of the cellophane outwards and cover it over the first side that has been pressed and positioned.

2. The cellophane wrapping mechanism according to claim 1, characterized in that, The pre-folded component includes a first folding plate, a first front and rear driving device, and a first rotation driving device; The first front and rear driving device is driven to the first folding plate to drive the first folding plate to move closer to or away from the cellophane; The first rotation drive device is driven to the first folding plate to drive the first folding plate to rotate around the first pivot, thereby performing a pre-folding action and performing the action of leaving the wrapping area or avoiding it.

3. The cellophane wrapping mechanism according to claim 2, characterized in that, The pressing component includes a first pressing claw, a second front and rear driving device, and a second rotary driving device. The second front and rear driving device is connected to the first pressure claw to drive the first pressure claw to move closer to or away from the cellophane; The second rotary drive device is connected to the first pressure claw drive to drive the first pressure claw to rotate around the second rotating shaft to the pressing position or away from the pressing position.

4. The cellophane wrapping mechanism according to claim 3, characterized in that, The first rotary drive device and the second rotary drive device are cylinders, which drive the first folding plate and the first pressure claw to rotate by lifting upwards, respectively.

5. The cellophane wrapping mechanism according to claim 1, characterized in that, The overlay and folding mechanism includes a second folding plate, a third front and rear driving device, and a third rotary driving device; The third front and rear driving device is driven to the second folding plate to drive the second folding plate closer to or away from the cellophane. The third rotation drive device is connected to the second folding plate to drive the second folding plate to rotate, thereby performing the lamination action, and lifting it up to remove it from the wrapping area and resetting it after lamination is completed.

6. The cellophane wrapping mechanism according to claim 1, characterized in that, The bottom push-folding mechanism includes: The lifting and clamping block is located in the middle; and The first lifting and pushing block and the second lifting and pushing block are located on both sides of the lifting and pressing block, respectively; In the initial state, the top height of the lifting and pressing block is higher than the top height of the first lifting and pushing block and the second lifting and pushing block, so that the middle part of the cellophane is first pressed towards the bottom of the yarn tube, and the two sides are then pushed upward.

7. The cellophane wrapping mechanism according to claim 6, characterized in that, The top of the lifting and pressing block is provided with a soft pressing block, and the bottom of the lifting and pressing block is provided with a lifting spring, which is used to provide an upward elastic preload to the lifting and pressing block.

8. The cellophane wrapping mechanism according to claim 1, characterized in that, It also includes a first air blowing device and / or a second air blowing device, wherein the first air blowing device is disposed adjacent to the pre-folding positioning mechanism and is used to blow airflow onto the cellophane on the first side to assist in pre-folding; The second air blowing device is disposed adjacent to the lamination and folding mechanism and is used to blow airflow onto the cellophane on the second side to assist lamination.

9. A cellophane wrapping device, characterized in that, Includes a cellophane tube wrapping mechanism as described in any one of claims 1 to 8, and: A yarn tube clamping mechanism, mounted on the frame, is used to clamp and fix the yarn tube; A cellophane transfer mechanism, installed on the frame, is used to transport cellophane to the wrapping position below the yarn tube.

10. A method for wrapping cellophane yarn tubes, characterized in that, Using the parcel mechanism as described in any one of claims 1 to 8, or the parcel device as described in claim 9, includes the following steps: Position the yarn tube and place the cellophane below the yarn tube at the wrapping position; The main lifting mechanism is driven to rise, so that the bottom pushing and folding mechanism, the pre-folding and positioning mechanism, and the overlapping and folding mechanism are all put into the packaging working position. The bottom folding mechanism operates, pushing and folding the bottom of the cellophane towards the yarn tube; The pre-folding mechanism's pre-folding action folds the first side edge of the cellophane towards the outer periphery of the yarn tube; The pressing component of the pre-folding positioning mechanism presses and positions the first side edge after pre-folding. While the holding member is in a holding state, the pre-folded member moves in the opposite direction, detaching from the wrapping area or avoiding the wrapping path; The folding mechanism folds the second side of the cellophane towards the outer periphery of the yarn tube and covers the first side that is being held in place, thus completing the wrapping process.

Images