A stranding device for a strapping machine

Abstract

The application discloses a kind of packing tape winding machine wire dispenser, belong to packing tape field, the packing tape winding machine wire dispenser is each provided with a pair of limit roller at inlet and outlet, the surface of limit roller is provided with the limit slot compatible with the thickness of packing tape, the rotation axis of limit roller is perpendicular to the plane where packing tape is, the limit slot on the two limit rollers of same pair is collectively constituted packing tape passage, all packing tape passages are located on the same plane and transmission direction is on the same straight line, the packing tape on the wire dispenser can stably follow wire dispenser fast motion using limit roller group twice limit stabilization to packing tape, packing tape at any position on wire dispenser will not generate relative motion with wire dispenser, can make packing tape from wire dispenser output to inflatable shaft can stably and orderly be wound on inflatable shaft, realize the stability of packing tape winding, overcome the technical problems that two sides of packing tape are uneven, concave-convex fluctuation between each layer packing tape.

Description

Technical Field

[0001] This invention relates to a cable guide for a packing tape rewinder, belonging to the field of packing tape. Background Technology

[0002] Packing straps, also known as packing tape or binding straps, are long, flat strips made of plastics such as polyethylene, polyvinyl chloride, polypropylene, or polyethylene terephthalate. For ease of transport and use, packing straps are usually sold in rolls.

[0003] The production process of packaged strapping involves feeding material into an extruder, which produces multiple strips of strapping. After cooling and orientation, these strips are transferred and distributed to multiple winding machines to be wound into packaged strapping. The guide wire is a crucial component of the strapping winding machine; its function is to guide and limit the incoming strapping, affecting the tightness of the final packaged strapping winding. During winding, as the air shaft rotates, the guide wire continuously moves back and forth near the circumferential surface of the air shaft, arranging the strapping onto the air shaft of the winding machine. This results in the strapping being wound into multiple layers, each layer consisting of several parallel rows.

[0004] Cable trays in existing technologies, such as Figure 1 (As shown in the diagram, the thin arrow marked A indicates the movement direction of the cable guide itself, and the wide arrow marked B indicates the transmission direction of the packing strap.) The cable guide includes two clamping plates 91. A fixed plate 92 is clamped on one side between the two clamping plates 91, and a movable plate 93 is clamped on the other side. The fixed plate 92, the movable plate 93, and the two clamping plates 91 together form the passageway for the packing strap. A cable guide mounting part 941 is connected to one side of the cable guide, and the cable guide mounting part 941 is connected to a telescopic rod 94 that drives the cable guide to move back and forth in direction A. The height of the passageway, i.e., the distance between the two clamping plates 91, is slightly greater than the thickness of the packing strap. The width of the passageway, i.e., the distance between the fixed plate 92 and the movable plate 93, is slightly greater than the width of the packing strap. A width adjustment mechanism 931 is connected to the movable plate 93 to adjust the distance between the movable plate 93 and the fixed plate 92 to accommodate packing straps of different widths. During the cable arrangement process, the strapping moves back and forth along direction A with the cable arranger and is continuously transmitted to the air shaft under the winding action of the air shaft. The overall movement amplitude of the strapping is large and the movement speed is fast. The existing clamping plate 91, fixed plate 92, and movable plate 93 cover the length of the strapping too short, and the strapping swings with a large amplitude relative to the cable arranger, which easily causes unevenness on both sides of the rolled strapping and unevenness between the layers of strapping. Summary of the Invention

[0005] In order to overcome the shortcomings of the prior art, the present invention provides a strapping tape rewinder cable guide, which can solve the problem of the stability of the strapping tape on the high-speed moving cable guide and ensure that the strapping tape is arranged neatly.

[0006] The technical solution adopted by this invention to solve its technical problem is:

[0007] A strapping tape rewinder includes a mounting frame with a cable guide mounting section. The cable guide mounting section is used to connect a drive mechanism that drives the cable guide to move back and forth on one side. The mounting frame has a pair of freely rotatable limiting rollers connected to the inlet and outlet of the cable guide. The distance between the inlet and outlet is greater than 150mm. The circumferential surface of the limiting roller is provided with a limiting groove adapted to the thickness of the strapping tape. The rotation axis of the limiting roller is perpendicular to the plane where the strapping tape is located. The limiting grooves on the two limiting rollers belonging to the same pair together form a strapping tape channel. All the strapping tape channels are located on the same plane and the transmission direction is on the same straight line.

[0008] The inlet refers to the position on the cable tray that receives the packing tape from the upstream station (usually the tensioning mechanism), and the outlet refers to the position on the cable tray that transmits the packing tape to the downstream station (air shaft).

[0009] The strapping tape winding machine guide provided in this application sets a pair of limiting rollers at both the inlet and outlet, requiring a distance of no less than 150mm between these two pairs of limiting rollers. The limiting roller group at the inlet provides primary limiting and stabilization of the strapping tape, while the limiting roller group at the outlet provides secondary limiting and stabilization. This not only ensures that the strapping tape on the guide can stably follow the rapid movement of the guide, and that the strapping tape at any position on the guide will not move relative to the guide, but also, through the secondary limiting effect of the limiting roller group at the outlet, ensures that the strapping tape output from the guide to the air shaft can be stably and orderly wound onto the air shaft, achieving stable strapping tape winding and overcoming the technical problems of uneven sides of the strapping tape and unevenness between layers of strapping tape. In addition, the limiting groove is used to limit the thickness of the strapping tape, and a pair of limiting rollers are used to limit the width of the strapping tape. During the transmission of the strapping tape, the limiting rollers rotate freely, and the rolling friction is used instead of the sliding friction of the cable guide in the prior art, which also helps to reduce the wear of the strapping tape and the cable guide.

[0010] Furthermore, the mounting frame is a flat plate with a flat upper surface. The distance between the strapping and the flat plate is small. During the movement of the strapping driven by the cable guide, the pressure is low where the flow rate is high, which makes the strapping closer to the flat plate, suppressing the swaying of this section of strapping on the flat plate, making the strapping more stable on the cable guide, and ensuring that the strapping is tightly wound.

[0011] Furthermore, the pair of limiting rollers located at the outlet are suspended rollers, suspended outside the straightening plate. This allows for full utilization of the straightening plate's length; while ensuring the same length of the cable guide covers the packing strap, the straightening plate can be shorter, reducing the cable guide's weight and thus mitigating vibration relative to the drive mechanism, making the cable guide more stable.

[0012] Furthermore, the distance between the limiting groove of the suspended roller and the bottom of the suspended roller is 1mm-5mm. Compared to setting the limiting roller on the cable tray, which makes it difficult to balance the thinness of the flat sheet and the structural strength, suspending the limiting roller at the cable outlet makes the shape of the limiting roller easier to design and adjust. Making the remaining thickness of the suspended roller below the limiting groove thinner allows the cable tray outlet to be as close as possible to the surface of the tape, which is beneficial for the cable tray to arrange the packing tape more neatly on the air shaft.

[0013] In some embodiments, a pair of limiting rollers are provided on the straightening plate between the inlet and the outlet, serving as intermediate rollers.

[0014] Furthermore, the limiting roller is connected to the straightening plate via a movable mounting component. The movable mounting component includes a vertically torsional section and a horizontal section that are perpendicular to each other. The limiting roller is rotatably connected to the bottom of the horizontal section, and the vertically torsional section is connected to the straightening plate via a torsion spring. Under the action of the torsion spring, the limiting roller can automatically adapt to strapping of different widths, eliminating the need for manual adjustment of the spacing between the paired limiting rollers during winding. In addition, this movable mounting component is particularly suitable for use as a limiting roller at the cable exit point, further reducing wear on the strapping.

[0015] Furthermore, the lower limit of the limiting groove is flush with the upper surface of the straightening plate, so that the lower surface of the strapping is as close as possible to the straightening plate, further suppressing the strapping from swinging on the straightening plate.

[0016] To ensure the lower limit of the limiting groove is flush with the upper surface of the straightening plate, the limiting roller mounted on the straightening plate comprises a coaxial major diameter section and a minor diameter section. The circumferential surface of the minor diameter section serves as the bottom of the limiting groove, which is located below the major diameter section and above the straightening plate, forming the limiting groove. This structure prevents the limiting roller on the straightening plate from lifting the strapping, keeping the strapping as close to the straightening plate as possible, thus improving the stability of the strapping during transport.

[0017] Furthermore, the distance between two adjacent pairs of limiting rollers is within 350mm. Controlling the distance between two adjacent pairs of limiting rollers helps to ensure the limiting effect on the length of the strapping, making the strapping as straight as possible before leaving the cable guide.

[0018] Furthermore, the cable guide mounting part is a cylinder, disposed at the bottom of the straightening plate and located at the end of the straightening plate near the cable inlet. The cable guide mounting part is used to install the mechanism that drives the cable guide to move. Positioning the cable guide mounting part near the cable inlet helps to stabilize the starting part of the cable guide with the help of the driving mechanism, reduces the vibration of the starting part of the cable guide during movement, and facilitates smooth and stable cable feeding.

[0019] The beneficial effects of this invention are as follows: The strapping tape winding machine of this invention utilizes the limiting roller group at the inlet to perform primary limiting and stabilizing of the strapping tape, and the limiting roller group at the outlet to perform secondary limiting and stabilizing. This not only allows the strapping tape on the winding machine to stably follow the rapid movement of the winding machine, preventing relative movement between the strapping tape at any position on the winding machine and the winding machine, but also, through the secondary limiting action of the limiting roller group at the outlet, ensures that the strapping tape output from the winding machine to the air expansion shaft can be stably and orderly wound onto the air expansion shaft, thus achieving strapping tape winding. The stability is improved, overcoming the technical problems of uneven sides of the strapping and unevenness between layers of strapping. Each pair of limiting rollers uses limiting grooves to limit the thickness of the strapping, and the pair of limiting rollers limits the width of the strapping, so that the strapping can only move along the strapping channel and cannot twist or swing, making the strapping more stable during high-speed movement. Therefore, the strapping can be neatly arranged on the air shaft. In addition, the rolling friction is used instead of the sliding friction of the cable guide in the existing technology, which also helps to reduce the wear of the strapping and the cable guide.

[0020] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description and the accompanying drawings. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the structure of the cable rewinder in the existing technology of packing tape rewinding machine.

[0022] Figure 2 This is one of the perspective views of a cable rewinder for a packing tape rewinder provided in the embodiments of this application.

[0023] Figure 3 This is a second perspective view of a cable rewinder for a packing tape rewinder provided in an embodiment of this application.

[0024] Figure 4 This is the third perspective view of a cable rewinder for a packing tape rewinder provided in the embodiments of this application.

[0025] Figure 5 This is a schematic diagram of the structure of the three limiting rollers provided in the embodiments of this application.

[0026] Figure 6 This is a schematic diagram of the working state of the cable rewinder of the packing tape rewinder provided in the embodiments of this application.

[0027] Figure 7 This is a schematic diagram illustrating the principle of the oscillation amplitude of the packing strap.

[0028] Figure 8 This is a schematic diagram of a scale that cannot achieve the proposed solution.

[0029] Reference numerals: 1. Straightening plate; 11. Cylinder; 2. Limiting roller; 28. Large diameter section; 29. ​​Small diameter section; 3. Limiting groove; 41. Fixed mounting part; 42. Movable mounting part; 48. Torsion spring; 49. Width adjustment hole; 91. Clamping piece; 92. Fixed piece; 93. Movable piece; 931. Width adjustment mechanism; 94. Telescopic rod; 941. Cable guide mounting part. Detailed Implementation

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and should not be construed as limiting the present invention.

[0031] The following disclosure provides many different embodiments or examples for implementing different structures of the invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed.

[0032] Reference Figure 6 During the winding and packing process, in order to ensure that the same layer of the tape has several rows ( Figure 6 The middle section contains 10 rows of strapping. A cable guide is needed to continuously move the strapping back and forth near the surface of the air shaft (or a roll of strapping with several layers already wound). The strapping is constantly being fed forward and simultaneously moving back and forth with the cable guide, resulting in a large range of motion. Without restraint, it is prone to twisting and uneven arrangement, ultimately causing unevenness on both sides of the roll. Therefore, the cable guide also needs to limit the movement of the strapping. (Refer to...) Figure 7 For two packing straps of equal length and uniform rigidity, each is equipped with a cable guide ( Figure 7(Simplified into a rectangle for ease of explanation) Limiting the middle section of the strapping tape, it is easy for those skilled in the art to understand that during the reciprocating motion of the cable guide relative to the air expansion shaft along direction A, the greater the length constrained by the cable guide, the smaller the swing amplitude of the strapping tape outside the cable guide, and the greater the displacement of the section of the strapping tape farther from the cable guide during the swing. However, in existing technologies, the cable guide covers a relatively short length of the strapping tape, typically only 8cm. As the strapping tape moves with the cable guide, it easily swings relative to the cable guide, resulting in uneven tension and irregular side undulations in the wound strapping.

[0033] Reference Figure 2 (In the accompanying diagram, the thin arrow indicates the direction of movement of the cable guide itself, denoted as direction A, and the wide arrow indicates the direction of transmission of the packing tape, denoted as direction B.) Figure 4 This application discloses a cable guide for a strapping rewinder, including a mounting frame with a cable guide mounting section. The cable guide mounting section is used to connect a drive mechanism that drives the cable guide to move back and forth on one side. The mounting frame is connected to at least one pair of freely rotatable limiting rollers 2 at the cable guide's inlet and outlet. The distance between the inlet and outlet is greater than 150mm. The circumferential surface of the limiting rollers 2 is provided with limiting grooves 3 adapted to the thickness of the strapping. The rotation axis of the limiting rollers 2 is perpendicular to the plane where the strapping is located. The limiting grooves 3 on the two limiting rollers 2 belonging to the same pair together constitute the strapping channel. All strapping channels are located on the same plane and the transmission direction is on the same straight line.

[0034] The strapping tape winding machine in this embodiment utilizes a limiting roller group at the inlet to provide primary stabilization for the strapping tape, and a limiting roller group at the outlet to provide secondary stabilization. This not only ensures that the strapping tape on the winding machine moves stably and quickly with the winding machine, preventing relative movement between the strapping tape at any position on the winding machine, but also, through the secondary stabilization effect of the limiting roller group at the outlet, ensures that the strapping tape output from the winding machine to the air shaft is stably and orderly wound onto the air shaft, achieving stable strapping tape winding and overcoming the technical problems of uneven sides of the strapping tape and unevenness between layers. Each pair of limiting rollers 2 specifically uses a limiting groove 3 to limit the thickness direction of the strapping tape, and the pair of limiting rollers 2 to limit the width direction of the strapping tape. This ensures that the strapping tape can only move along the strapping tape channel under the pull of the rotating air shaft, and cannot twist or swing relative to the winding machine, making the strapping tape more stable during high-speed movement. Therefore, it can arrange the strapping tape neatly on the air shaft. During the conveying of the packing strap, the limiting roller 2 rotates freely, reducing friction by rolling, which helps to reduce wear on the packing strap and the cable guide.

[0035] It should be noted that, in this embodiment of the application, the rotation axis of the limiting roller 2 is required to be perpendicular to the plane where the packing strap is located, such as... Figure 8In the illustrated embodiment, although the circumferential surface of the limiting roller is also provided with a limiting groove adapted to the thickness of the packing strap, the rotation axis of the limiting roller is parallel to the plane where the packing strap is located, causing this form to fail to achieve the effect of this application. For example Figure 8 d. Each of the paired limiting rollers also has a limiting groove on its circumferential surface that is adapted to the thickness of the packing strap. The rotation axis of the limiting roller is parallel to the plane containing the packing strap. Since the direction of movement of the cable guide (direction A in other attached figures) is perpendicular to the transmission direction of the packing strap, therefore... Figure 8 The type of limiting roller shown in diagram d is prone to crushing the edge of the strapping, making it more susceptible to edge wear. If a different type of limiting roller is used to avoid crushing,... Figure 8 In the case of a single limiting roller, the strapping tape is prone to jumping out of the limiting roller during large movements, leading to limiting failure. In this embodiment, the rotation axis of the limiting roller 2 is perpendicular to the plane where the strapping tape is located, so it will not crush the edge of the strapping tape, and the width of the strapping tape can be adapted by adjusting the distance between the paired limiting rollers.

[0036] In some embodiments, the mounting frame can be two parallel mounting rods, with the limiting rollers 2 belonging to the same pair mounted on the two mounting rods. In some embodiments, the mounting frame can be a hanger, with all the limiting rollers 2 suspended at the bottom of the hanger. In a preferred embodiment, the mounting frame is a straightening plate 1, the upper surface of which is flat. The distance between the strapping and the straightening plate 1 is small. During the movement of the strapping driven by the cable guide, air passes through the lower surface of the strapping and the upper surface of the straightening plate 1. The pressure is low where the flow rate is high, making the strapping closer to the straightening plate 1, suppressing the strapping from swinging on the straightening plate 1, further enhancing the limiting of the strapping, and ensuring that the strapping is tightly wound.

[0037] Furthermore, the pair of limiting rollers 2 located at the outlet are suspended rollers, suspended outside the straightening plate 1. This allows for full utilization of the length of the straightening plate 1. With the same length of the cable guide covering the packing strap, the straightening plate 1 can be shorter, reducing the weight of the cable guide. This helps reduce the vibration of the cable guide relative to the drive mechanism, making the cable guide more stable during movement.

[0038] like Figure 7 As shown in the diagram, the farther the strapping is from the cable guide, the greater the displacement during the oscillation. Therefore, the closer the limiting end point of the strapping is to the air shaft, the easier it is to align the strapping neatly. For example... Figure 6 As shown, the surface of the air shaft or the tape reel is arc-shaped. It is evident that the thinner the component supporting the packing tape, the easier it is for the cable exit point of the cable guide to approach this arc surface. Figure 1The conventional cable guide shown also makes the cable outlet of the clamp 91 as thin as possible. In some embodiments, if the limiting roller 2 is set on the straightening plate 1, which serves as a mounting frame, a thin cable guide would affect the structural strength of the cable guide. In a preferred embodiment, after the limiting roller 2 is suspended outside the straightening plate 1, the limiting groove 3 can be set as low as possible on the limiting roller 2, so that the distance between the limiting groove 3 of the suspended roller and the bottom of the suspended roller is 1mm-5mm. This eliminates the need to make the straightening plate 1 thin, does not affect the structural strength of the straightening plate 1, and allows the cable outlet of the cable guide to be as close as possible to the air shaft or the tape winding, thus ensuring that the packing tape is neatly arranged.

[0039] Reference Figure 3 The limiting roller 2 at the outlet is suspended outside one end of the straightening plate 1 by a movable mounting part 42. The movable mounting part 42 includes a vertical torsion section and a horizontal section that are perpendicular to each other. The limiting roller 2 is rotatably connected to the bottom of the horizontal section, and the vertical torsion section is connected to the straightening plate 1 by a torsion spring 48. Figure 3 To facilitate the demonstration of the internal structure, one of the movable mounting components 42 is concealed. In reality, in this embodiment, two movable mounting components 42 are connected to the end of the straightening plate near the cable outlet. Each movable mounting component 42 contains a torsion spring 48, providing sufficient space for the limiting roller 2, suspended outside the straightening plate 1, to deflect. On one hand, by selecting a torsion spring with appropriate torque based on the stiffness of the strapping tape, automatic deflection can be achieved, meeting different tape width requirements. It can automatically adapt to tape widths from 7mm to 32mm without requiring manual adjustment of the distance between the paired limiting rollers. On the other hand, referring to… Figure 6 After the strapping tape leaves the cable guide, it is wound onto the air shaft. At a certain moment when it is stationary, it is equivalent to one end of the strapping tape being fixed on the air shaft (or a roll of tape that has been wound several layers), and the other end being led out from the cable guide. The cable guide is about to move relative to the air shaft. It can be seen that the limiting groove 3 pushes the side of the strapping tape so that the strapping tape moves with the cable guide. At the cable outlet, the side of the strapping tape is subjected to greater force. When the movable mounting part 42 can be twisted, during the movement, part of the force that was originally borne by the strapping tape is used to make the movable mounting part 42 wobble slightly, which plays a buffering role and can avoid wear on the side of the strapping tape to a certain extent.

[0040] Reference Figure 2 and Figure 3 The limiting roller 2 at the inlet is suspended outside one end of the straightening plate 1 or above the straightening plate 1 by a fixing mounting member 41. The fixing mounting member 41 includes a mounting part and a horizontal part connected to the mounting part. The limiting roller 2 is rotatably connected to the bottom of the horizontal part. The mounting part is bolted to the straightening plate 1, and the mounting part is provided with a width adjustment hole 49 for accommodating the bolt. Figure 3In the illustrated embodiment, only one side of the fixing mounting member 41 has a width adjustment hole 49. In a more preferred embodiment, both sides of the fixing mounting member have width adjustment holes 49. The fixing mounting member 41 is adjusted on the straightening plate 1 with the help of bolts and nuts, thereby adjusting the distance between the two pair of limiting rollers 2 to accommodate packing straps of various widths.

[0041] In some large winding machines, the drive mechanism of the cable guide is far from the air shaft, requiring the use of a longer straightening plate 1, such as... Figure 4 As shown, a limiting roller 2, hereinafter referred to as the intermediate roller, can be added to the straightening plate 1 between the inlet and outlet. This embodiment uses multiple pairs of limiting rollers 2 to limit the strapping at multiple positions in the width direction. Even in a long straightening plate 1, the strapping can be kept as close as possible to the straightening plate 1, preventing the strapping in the cable guide from swinging relative to the cable guide (and...). Figure 7 The oscillation shown here is different; it refers to the oscillation of the strapping between two adjacent pairs of limit rollers.

[0042] The greater the distance between two adjacent pairs of limiting rollers 2, the greater the mass of the packing strap between them, and the greater the inertia. During the continuous back-and-forth movement of the winding device, the heavier section of the packing strap is prone to swaying relative to the winding device. This results in the actual length of the packing strap between the two pairs of limiting rollers 2 being greater than the distance between them, making the packing strap less straight and loose. Therefore, preferably, the distance between two adjacent pairs of limiting rollers 2 is within 350mm. This helps ensure that a section of the packing strap between the two pairs of limiting rollers 2 does not sway relative to the winding device, allowing the packing strap to be as straight as possible before leaving the winding device, resulting in a tighter and neater final roll.

[0043] Reference Figure 5 The limiting roller 2 comprises a coaxial large-diameter section 28 and a small-diameter section 29, with the circumferential surface of the small-diameter section 29 serving as the bottom of the limiting groove 3. For example... Figure 5 As shown in diagram a, a small-diameter segment 29 is located between two large-diameter segments 28, forming a limiting groove 3. Figure 4 The limiting roller 2 is enclosed by the middle circle. The distance between the limiting groove 3 of the suspended roller and the bottom of the suspended roller, as mentioned above, is 1mm-5mm. Figure 5 In the limiting roller structure shown in Figure a, the thickness of the lowest large-diameter section 28 is 1mm-5mm.

[0044] The lower limit of the limiting groove 3 is flush with the upper surface of the straightening plate 1, which helps the strapping tape to fit closer to the straightening plate and keeps the strapping tape straight until it leaves the cable guide. If the intermediate roller uses... Figure 5As shown in Figure a, the lowermost large-diameter section 28 of the limiting roller will lift the packing strap, failing to meet the requirement that the lower limit of the limiting groove 3 be flush with the upper surface of the straightening plate 1. If a clearance is provided on the straightening plate 1 to accommodate the limiting roller 2 located in the middle section of the straightening plate 1, the middle part of the straightening plate 1 will become narrow, reducing the structural strength of the straightening plate 1. Therefore, the following is proposed: Figure 5 The structure shown in b is such that a smaller diameter segment 29 is located below a larger diameter segment 28 and above the straightened flat plate 1, forming a limiting groove 3, as shown in Figure b. Figure 4 The limiting roller 2 enclosed by the Chinese frame is more suitable for being directly set on the middle section of the straightening plate. It does not affect the structural strength of the straightening plate 1 and allows the limiting roller 2 to be set in the middle section of the straightening plate 1, while also making the packing strap as close as possible to the straightening plate 1.

[0045] The drive mechanism connected to the cable guide mounting part can specifically be a telescopic rod on the packing tape rewinder. The cable guide mounting part can be a cylinder 11, located at the bottom of the mounting frame, with the telescopic rod inserted into the cylinder 11 from one side to fix the cable guide. In a preferred embodiment, the cylinder 11 is located at the end of the straightening plate 1 near the cable inlet, and the drive mechanism acts as a fulcrum supporting the cable guide, which helps stabilize the starting part of the cable guide, reduces vibration of the starting part of the cable guide during movement, and facilitates smooth and stable cable feeding (packing tape entering the cable guide).

[0046] As mentioned above, by suspending the limiting roller 2 at the outlet outside the straightening plate 1, a shorter straightening plate can be used when covering the same length of packing tape. This is equivalent to reducing the torque from the cylinder to the outlet, making the center of gravity of the straightening plate 1 as close as possible to the cylinder 11, and making the drive mechanism's support for the cable guide more stable.

[0047] Similarly, in order to reduce the weight of the ribbon cable, Figure 5 Based on the limiting roller structure shown in Figure a, it is improved as follows: Figure 5 The structure shown in c has two large-diameter sections 28 that are actually two collars, with a limiting groove 3 formed between them. This limiting roller 2 is also suitable for suspension outside the straightening plate 1, and compared to... Figure 5 The structure of a Figure 5 The structure of c effectively reduces the weight of the limiting roller 2. Figure 5 The structure of 'c' is used for the cable outlet, Figure 5 The structure of 'a' is used for the inlet, so that the center of gravity of the cable guide is as close as possible to the cylinder 11, reducing the vibration of the cable guide outlet.

[0048] In addition, the above-mentioned limiting groove 3 is adapted to the thickness of the packing strap. Specifically, the vertical spacing of the limiting groove 3 is greater than the thickness of one layer of packing strap and less than the thickness of two layers of packing strap. More preferably, the vertical spacing of the limiting groove 3 is 1.2 times the thickness of the packing strap, which makes the friction between the packing strap and the limiting roller smaller and makes the packing strap as straight as possible.

[0049] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications are also considered to be within the scope of protection of the present invention.

Claims

1. A cable guide for a packing tape rewinder, comprising a mounting bracket with a cable guide mounting portion, the cable guide mounting portion being used to connect on one side a drive mechanism for driving the cable guide to reciprocate, characterized in that, The mounting frame is connected to a pair of freely rotatable limiting rollers (2) at both the inlet and outlet. The distance between the inlet and outlet is greater than 150mm. The circumferential surface of the limiting rollers (2) is provided with limiting grooves (3) adapted to the thickness of the packing strap. The rotation axis of the limiting rollers (2) is perpendicular to the plane where the packing strap is located. The limiting grooves (3) on the two limiting rollers (2) belonging to the same pair together form the packing strap channel. All the packing strap channels are located on the same plane and transmit... The conveying directions are in the same straight line; the mounting frame is a flat plate (1) with a flat upper surface; the lower limit of the limiting groove (3) is level with the upper surface of the flat plate (1); the limiting roller (2) includes a coaxial large diameter section (28) and a small diameter section (29) according to the diameter size, the circumferential surface of the small diameter section (29) serves as the bottom of the limiting groove (3), and the small diameter section (29) is located below the large diameter section (28) and above the flat plate (1) to form the limiting groove (3).

2. The cable guide for a packing tape rewinder according to claim 1, characterized in that, The pair of limiting rollers (2) located at the outlet are suspended rollers, which are suspended outside the straightening plate (1).

3. The cable guide for a packing tape rewinder according to claim 2, characterized in that, The distance between the limiting groove (3) of the suspended roller and the bottom of the suspended roller is 1mm-5mm.

4. The cable guide for a packing tape rewinder according to claim 1, characterized in that, Between the inlet and the outlet, a pair of limiting rollers (2) are provided on the straightening plate (1).

5. The cable guide for a packing tape rewinder according to claim 2 or 4, characterized in that, The limiting roller (2) is connected to the straightening plate (1) via a movable mounting part (42). The movable mounting part (42) includes a vertical torsion section and a horizontal section that are perpendicular to each other. The limiting roller (2) is rotatably connected to the bottom of the horizontal section. The vertical torsion section is connected to the straightening plate (1) via a torsion spring (48).

6. The cable guide for a packing tape rewinder according to claim 1 or 4, characterized in that, The distance between two adjacent pairs of limiting rollers (2) is within 350mm.

7. The cable guide for a packing tape rewinder according to claim 1, characterized in that, The cable tray mounting part is a cylinder (11), which is located at the bottom of the straightening plate (1) and at one end of the straightening plate (1) near the cable inlet.

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