Vacuum hub telescoping mechanism of compound machine

Abstract

The invention discloses a vacuum hub telescopic mechanism of a compound machine. The vacuum hub telescopic mechanism comprises a hub rail, a mounting seat, a label feeding assembly, a cutting assembly and a vacuum hub assembly, wherein the mounting seat is connected to the hub rail in a sliding manner; and the label feeding assembly, the cutting assembly and the vacuum hub assembly are arranged on the mounting seat. Wherein the label conveying assembly is used for conveying an embedded layer material, the cutting assembly is used for precisely cutting the embedded layer material through a cutter, and the vacuum hub assembly is used for adsorbing and positioning the embedded layer material through negative pressure and attaching the embedded layer material to the surface of a bottom layer material. In addition, due to the optimally-designed guiding piece and the label feeding driving roller and the label feeding driven roller with the adjustable distance, the material conveying stability is improved. Efficient and accurate machining and compounding of the embedded layer material are achieved, the production efficiency and the product quality are remarkably improved, and meanwhile good adaptability and reliability are achieved.

Description

Technical Field

[0001] The present application relates to the field of label production equipment, and in particular to a vacuum hub telescopic mechanism of a composite machine. Background Art

[0002] The RFID laminating machine is the core equipment in the RFID tag production process. It is mainly used to compound Inlay (antenna and chip packaging synthesis) with other materials (such as face paper, backing paper, adhesive layer, protective film, etc.) to form a composite material, and then die-cut to form various specifications of RFID tag finished products. Among them, Inlay is the output product of the upstream packaging equipment of RFID and the input raw material of the laminating machine. It is generally a roll without glue, which is used as the embedding material in the composite material. In the RFID laminating machine, the cutter and the vacuum drum are two key components, each of which has different functions. The cutter is mainly used to cut the continuous embedding material according to the preset size to form a single Inlay unit, which is convenient for subsequent lamination with face paper, backing paper or other materials. The vacuum drum is mainly used to adsorb and position Inlay to ensure its stability and accuracy during the laminating process. The two work together and are the key components for the RFID tag laminating machine to achieve efficient and high-precision production.

[0003] In common laminating machines, the width of the vacuum drum is determined by the maximum width of the base paper that can be processed by the equipment. The wider the base paper, the wider the vacuum drum width required. The width of the vacuum drum in a laminating machine is usually reserved to be the same as the maximum width of the base paper, which is the maximum distance between the upper and lower sides that can be attached to the base paper. Therefore, the vacuum drum of a laminating machine is usually designed to be the maximum width of the base paper. Regardless of the width specification of the label product being processed, the vacuum drum with the maximum width is used. Maintaining such a wide vacuum drum consumes more energy, which is not conducive to long-term use and maintenance, so there is still room for improvement. Summary of the invention

[0004] In order to reduce energy consumption and facilitate use and maintenance, the present application provides a vacuum hub telescopic mechanism for a composite machine.

[0005] The vacuum hub telescopic mechanism of a composite machine provided in this application adopts the following technical solution: A composite machine vacuum hub telescopic mechanism, comprising: A wheel hub track extending along the width direction of the bottom material; A mounting seat, the mounting seat being slidably connected to the hub track and being located above the bottom material passing therethrough; A label delivery component, which is arranged at the feeding end of the mounting seat and is used to deliver the embedding material into the interior of the mounting seat; The cutting assembly and the vacuum hub assembly are both arranged inside the mounting seat and distributed up and down, and a gap is formed between the cutting assembly and the vacuum hub assembly for the embedded material to pass through. The cutting assembly is used to cut the embedded material, and the vacuum hub assembly is used to absorb and position the embedded material, and to stick the embedded material to the surface of the underlying material below.

[0006] By adopting the above technical solution, the overall volume of the vacuum hub telescopic mechanism of the composite machine is reduced. The vacuum hub assembly does not need to increase its own width blindly to adapt to the width of the underlying material, thereby reducing the energy consumption required for vacuuming the vacuum hub assembly. In addition, the label feeding assembly, cutting assembly and vacuum hub assembly are integrated into one body, which also improves the overall rigidity and operating stability, allowing the equipment to run smoothly at a higher speed. The vacuum hub telescopic mechanism adjusts the position of the mounting seat according to the width direction of the underlying material, and sticks the embedded material to the center of the underlying material to meet the composite requirements, thereby improving the adaptability of the equipment. In addition, the design supports modular management, which facilitates rapid switching and upgrading between different devices, meets the needs of various application scenarios, and significantly reduces maintenance costs and difficulty of use.

[0007] Preferably, the vacuum hub assembly includes a negative pressure driving component, a vacuum hub roller rotatably connected to the mounting seat, a vacuum hub driving component for driving the vacuum hub roller to rotate, and an outer cylinder sleeved on the outer circumference of the vacuum hub roller, the outer circumference of the vacuum hub roller is provided with a plurality of circumferentially distributed chambers, the circumferential wall of the outer cylinder is evenly provided with a plurality of adsorption holes connected to the chambers, and the negative pressure driving component is used to evacuate the interior of the chamber to form a negative pressure.

[0008] By adopting the above technical scheme, the vacuum hub assembly can accurately adsorb and position the embedded material and stably adhere it to the surface of the underlying material by arranging a negative pressure drive, a vacuum hub roller, a vacuum hub drive and an outer cylinder with a chamber and an adsorption hole, thereby improving the accuracy and stability of the production process and reducing energy consumption. In addition, in the process of producing electronic labels by a composite machine, fast production speed and high efficiency are required, so the surface of the vacuum hub assembly is easily worn, causing the label to detach and shift, and it needs to be replaced after a long period of use. The vacuum hub assembly is split into a vacuum hub roller and an outer cylinder to facilitate the replacement of the outer cylinder. In addition, the outer cylinder can be split into multiple arc plates and installed in a tile-like manner, so that the outer cylinder can be replaced locally in a targeted manner.

[0009] Preferably, the cutting assembly includes a cutting roller rotatably connected to a mounting seat, a plurality of cutting knives arranged on the peripheral wall of the cutting roller, and a cutting motor for driving the cutting roller to rotate, wherein the plurality of cutting knives extend along the axial direction of the cutting roller and are distributed along the circumference of the cutting axis.

[0010] By adopting the above technical solution, the cutting assembly can efficiently complete the precise cutting of the embedded material by arranging a number of cutters on the peripheral wall of the cutting roller and cooperating with the cutting motor drive, ensuring the accuracy of the cutting size and position, meeting the error requirement within ±0.2mm, and improving product quality and production efficiency.

[0011] Preferably, the outer peripheral surface of the cutting roller is provided with a plurality of mounting grooves, the mounting grooves are used to mount the cutting knife, and the blade of the cutting knife extends out of the mounting grooves.

[0012] By adopting the above technical solution, a plurality of mounting grooves are provided on the outer circumference of the cutting roller, and the cutting knife is installed by using the mounting grooves, and the cutting edge of the cutting knife extends out of the mounting grooves, thereby achieving accurate cutting of the embedded material. This design solution can ensure that the cutting knife is stably installed, and is convenient for adjusting and replacing the cutting knife, thereby improving cutting accuracy and work efficiency.

[0013] Preferably, the label delivery assembly includes an active label delivery roller rotatably connected to the mounting groove, a label delivery motor for driving the active label delivery roller to rotate, a sliding frame slidably connected to the mounting seat, and a driven label delivery roller rotatably connected to the sliding frame, and the distance between the active label delivery roller and the driven label delivery roller can be adjusted according to the thickness of the embedded layer.

[0014] By adopting the above technical solution, the flexible adjustment function of the label feeding component is realized. Specifically, the distance between the label feeding active roller and the label feeding driven roller can be adjusted in real time according to the thickness of the embedded material, so as to adapt to the conveying requirements of embedded materials of different specifications. This design not only improves the compatibility of the equipment, but also ensures the stability of the embedded material during the transmission process, avoids the problem of material jamming or offset caused by thickness difference, and thus improves the working efficiency and product quality of the entire compound machine.

[0015] Preferably, the mounting seat is provided with a lifting member for driving the sliding frame to move radially toward the label-feeding active roller.

[0016] By adopting the above technical solution, the mounting seat is provided with a lifting member to drive the sliding frame to move radially toward the label feeding active roller, and the spacing between the label feeding driven roller and the label feeding active roller can be flexibly adjusted. This design enables the equipment to adapt to embedded materials of different thicknesses, improves the compatibility of the composite machine with diversified materials, reduces the production failure rate caused by changes in material thickness, and thus improves the overall production stability and efficiency.

[0017] Preferably, a guide member for guiding the embedded material is provided in the mounting seat, and the guide member is connected in the gap between the cutting assembly and the vacuum hub assembly and in the gap between the label feeding active roller and the label feeding driven roller.

[0018] By adopting the above technical solution, the guide can accurately guide the transmission path of the embedded material inside the compound machine, ensuring its smooth transition to the gap between the cutting component and the vacuum hub component and the gap between the label feeding active roller and the label feeding driven roller. This design effectively improves the stability of the embedded material during the entire processing process, reduces the scrap rate caused by material deviation, and improves the accuracy of cutting and adsorption positioning, thereby ensuring the quality consistency of the final RFID tag product.

[0019] Preferably, the guide member comprises two guide plates distributed up and down, the gap between the two guide plates allows the embedding material to pass through, a plurality of guide strips are provided at one end of the two guide plates facing the label conveying assembly, the outer peripheral surface of the label conveying active roller and the outer peripheral surface of the label conveying driven roller are provided with a plurality of axially distributed annular grooves, a plurality of the guide strips correspond to a plurality of annular grooves one by one, and the guide strips pass through the corresponding annular grooves.

[0020] By adopting the above technical solution, the gap between the two guide plates ensures that the embedded material passes smoothly and avoids deviation. The guide strip cooperates with the annular grooves on the label feeding active roller and the label feeding driven roller to further enhance the stability of material transmission and reduce the risk of material jamming or misalignment, thereby improving the reliability and efficiency of the entire composite process.

[0021] In summary, the present application includes at least one of the following beneficial technical effects: 1. The vacuum hub telescopic mechanism of the laminating machine realizes the position adjustment function through the sliding connection on the hub track, which can be adapted according to different base paper widths, thereby significantly reducing the size of the equipment and reducing installation requirements; 2. The vacuum hub assembly adopts an optimized chamber and adsorption hole structure, and cooperates with the negative pressure drive to form a high-efficiency adsorption system, which greatly reduces energy consumption while ensuring adsorption force; 3. The cutting assembly accurately completes the inlay material cutting task and works in conjunction with the vacuum hub assembly to improve the processing accuracy and production efficiency of the Inlay unit. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of a whole machine of a compound machine according to an embodiment of the present application.

[0023] Figure 2 It is a schematic diagram of the orientation of the embedded layer material and the bottom layer material in a vacuum hub telescopic mechanism of a composite machine according to an embodiment of the present application.

[0024] Figure 3 It is a schematic diagram of the overall structure of a vacuum hub telescopic mechanism of a composite machine according to an embodiment of the present application.

[0025] Figure 4It is a structural schematic diagram of a composite machine vacuum hub telescopic mechanism after hiding the label delivery component in an embodiment of the present application.

[0026] Figure 5 It is a structural schematic diagram of a chamber in a vacuum hub telescopic mechanism of a composite machine according to an embodiment of the present application.

[0027] Figure 6 It is a schematic structural diagram of an outer cylinder in a vacuum hub telescopic mechanism of a composite machine according to an embodiment of the present application.

[0028] Figure 7 It is a schematic diagram of the assembly of a cutting roller and a cutting knife in a vacuum hub telescopic mechanism of a compound machine according to an embodiment of the present application.

[0029] Explanation of the reference numerals: 1. Embedding material; 2. Bottom material; 3. Mounting seat; 4. Hub track; 5. Vacuum hub assembly; 51. Vacuum hub driver; 52. Vacuum hub roller; 521. Chamber; 53. Outer cylinder; 531. Adsorption hole; 6. Label delivery assembly; 61. Label delivery active roller; 62. Label delivery driven roller; 63. Sliding frame; 64. Lifting member; 65. Label delivery motor; 7. Cutting assembly; 71. Cutting motor; 72. Cutter; 73. Cutting roller; 731. Mounting groove; 8. Guide member; 81. Guide plate; 82. Guide strip; 9. Annular groove. DETAILED DESCRIPTION

[0030] The following is combined with Figure 1-7 This application is described in further detail.

[0031] The present application embodiment discloses a composite machine vacuum hub telescopic mechanism, referring to Figure 1 The main body of the composite machine is driven by an electric control cabinet. When producing labels, the material is fed through the steps of Inlay unwinding, fabric unwinding, and base material unwinding. At the same time, the fabric waste is rolled up. The Inlay, fabric, and base material are compounded at the composite main power mechanism. The die-cutting knife seat cuts the composite material and finally the finished product is rolled up. In production, the roll material is conveyed through the base material drive shaft, the composite drive shaft 1, and the composite drive shaft 2. The base material is processed by the hot melt glue gun 1, the hot melt glue gun 2, the corrector, and the base material buffer, thereby improving the overall processing quality.

[0032] Reference Figure 2 and Figure 3, the vacuum hub telescopic mechanism includes a hub track 4, a mounting seat 3, a label delivery assembly 6, a cutting assembly 7 and a vacuum hub assembly 5. Among them, the hub track 4 extends along the width direction of the bottom material 2, the mounting seat 3 is slidably connected to the hub track 4 and is located above the bottom material 2; the label delivery assembly 6 is arranged at the feeding end of the mounting seat 3 for the introduction of the embedded material 1, and the cutting assembly 7 and the vacuum hub assembly 5 are both arranged inside the mounting seat 3 and distributed up and down, and the gap formed between them allows the embedded material 1 to pass through, the former is responsible for the precise cutting of the embedded material 1, and the latter is used to absorb and accurately position the embedded material 1 and transfer the embedded material 1 to the surface of the bottom material. This design realizes modular flexible assembly and greatly improves the operating efficiency. In this embodiment, the embedded material 1 is a continuous Inlay material, and the bottom material 2 adopts a continuous base paper.

[0033] In this embodiment, the hub track 4 mainly adopts a linear guide rail. An aluminum rectangular cross-section member can be selected and firmly fixed to the side of the fuselage frame by high-strength steel bolts, and stainless steel material is selected to enhance corrosion resistance. The hub track 4 is located above the bottom material 2.

[0034] In this embodiment, the main body of the mounting seat 3 is generally made of cast iron, which is very suitable for such applications because of its good mechanical properties such as strong wear resistance; in order to reduce weight, magnesium alloy casting can also be used partially to achieve the purpose of lightweight. The movement of the mounting seat 3 can be driven by a linear module or a power element of a cylinder.

[0035] In this embodiment, the label delivery assembly 6 includes a label delivery active roller 61, a label delivery driven roller 62, a sliding frame 63 and a label delivery motor 65. Specifically, the label delivery active roller 61 is rotatably connected to the mounting seat 3, and the axial direction of the label delivery active roller 61 is consistent with the width direction of the bottom material 2. The sliding frame 63 is located above the label delivery active roller 61 and is slidably connected to the mounting seat 3 along the radial direction of the label delivery active roller 61. The label delivery driven roller 62 is parallel to the label delivery active roller 61 and is rotatably connected to the sliding frame 63. In addition, the mounting seat 3 is equipped with a lifting member 64 for driving the sliding frame 63 to move radially toward the label delivery active roller 61. The lifting member 64 is specifically a cylinder, so that the distance between the label delivery active roller 61 and the label delivery driven roller 62 can be adjusted according to the thickness of the embedded layer.

[0036] Reference Figures 4 to 6In this embodiment, the vacuum hub assembly 5 includes a negative pressure driving member, a vacuum hub roller 52 rotatably connected to the mounting seat 3, a vacuum hub driving member 51 for driving the vacuum hub roller 52 to rotate, and an outer cylinder 53 sleeved on the outer circumference of the vacuum hub roller 52. The vacuum hub driving member 51 adopts a motor, and the vacuum hub roller 52 is driven to rotate by the motor. The outer circumference of the vacuum hub roller 52 is provided with a plurality of circumferentially distributed chambers 521, and the chambers 521 extend along the axial direction of the vacuum hub roller 52. The peripheral wall of the outer cylinder 53 is evenly provided with a plurality of adsorption holes 531 connected to the chambers 521, and the negative pressure driving member is used to evacuate the interior of the chamber 521 to form a negative pressure. Among them, the negative pressure driving member can adopt a vacuum pump or a vacuum fan, and the pipeline of the vacuum fan is connected to the internal pipeline of the vacuum hub roller 52 through a rotary joint, and is connected to each chamber 521, so as to form a stable negative pressure state in each chamber 521. The adsorption hole 531 is a long hole. By adopting a vacuum hub design with a panel with a long hole, the adsorption force of the vacuum hub can be effectively increased. In addition, the actual adsorption effect can be improved by optimizing and shortening the pipeline, increasing the pipe diameter, improving the smoothness of the inner wall, and reducing leakage pressure loss. By reducing the volume of the vacuum hub assembly 5 and optimizing the structure of each component, the original 2.2KW vacuum fan is reduced to 700W vacuum fan, and the overall energy consumption is reduced.

[0037] Because the production speed and efficiency are required to be high in the process of producing electronic labels in the composite machine, the surface of the vacuum hub assembly 5 is easily worn, causing the label to be dislocated and shifted, and it needs to be replaced after a long period of use. Considering the sealing and machining process, a vacuum hub assembly 5 with replaceable surface is adopted. By splitting the vacuum hub assembly 5 into a vacuum hub roller 52 and an outer cylinder 53, it is convenient to replace the outer cylinder 53. In addition, the outer cylinder 53 can also be split into multiple arc plates, which are installed in a tile-like manner, so that the outer cylinder 53 can be partially replaced by loosening the screws of the arc plates at the corresponding positions.

[0038] Reference Figure 4 and Figure 7In this embodiment, the cutting assembly 7 includes a cutting roller 73, a plurality of cutters 72 and a corresponding driving device, namely a so-called cutting motor 71. The cutting roller 73 should be forged with a special steel material with extremely high hardness to ensure reliable performance under long-term high-frequency operation. The selection of a permanent magnet synchronous type cutting motor 71 is not only energy-saving and environmentally friendly, but also has a rapid response and extremely high control accuracy to meet actual needs. In addition, a plurality of mounting grooves 731 are provided on the outer peripheral surface of the cutting roller 73. The mounting grooves 731 are evenly spaced and circumferentially distributed on the peripheral side of the cutting roller 73. The mounting grooves 731 are used to install the cutter 72. The blade of the cutter 72 extends out of the mounting groove 731, which ensures that the cutter 72 is firmly installed while facilitating the adjustment and replacement of the cutter 72, thereby improving cutting accuracy and work efficiency. It is particularly noted that the cutter 72 can be precisely adjusted in both the axial and radial directions of the cutting roller 73 to ensure cutting accuracy and consistency. When the cutting assembly 7 is working, the cutting roller 73 and the vacuum hub roller 52 rotate in the same direction, and the continuous inlay material 1 is cut according to the preset size to form a single Inlay unit. It is equipped with an electric eye to control the positioning, and the accuracy of the cutting size and position is required to be ensured, and the error is within ±0.2mm. The cutter 72 is required to be installed accurately. The blade of the cutter 72 is balanced. When the blade of the cutter 72 cuts the inlay material 1 on the surface of the outer cylinder 53, the blade of the cutter 72 is perpendicular to the inlay material 1 to achieve the purpose of accurate cutting.

[0039] Reference Figure 3 and Figure 4 In this embodiment, a guide member 8 is also installed in the mounting seat 3, which is used to connect the gap between the cutting assembly 7 and the vacuum hub assembly 5 and the gap between the label delivery active roller 61 and the label delivery driven roller 62. The guide member 8 includes two guide plates 81 distributed up and down, and the gap between the two guide plates 81 can allow the embedded material 1 to pass through. The gap between the two guide plates 81 ensures that the embedded material 1 passes smoothly and avoids deviation. In addition, a plurality of guide strips 82 are provided at one end of the two guide plates 81 facing the label delivery assembly 6, and a plurality of axially distributed annular grooves 9 are provided on the outer peripheral surface of the label delivery active roller 61 and the outer peripheral surface of the label delivery driven roller 62. The plurality of guide strips 82 correspond to the plurality of annular grooves 9 one by one, and the guide strips 82 pass through the corresponding annular grooves 9. The guide strips 82 cooperate with the annular grooves 9 on the label delivery active roller 61 and the label delivery driven roller 62, further enhancing the stability of the transmission of the embedded material 1, reducing the risk of material jamming or dislocation, thereby improving the reliability and efficiency of the entire composite process.

[0040] The implementation principle of this embodiment is: the mechanism integrates various functional components into an integral unit and enables them to move and adjust their positions within a certain range to adapt to the width changes of base paper materials of different specifications, which not only reduces the total volume of the equipment, but also simplifies the operation process and improves work efficiency. In particular, there has been a qualitative leap in energy consumption, effectively reducing operating costs. In addition, the unique long hole design of the outer cylinder 53 panel increases the effective adsorption area, further enhances the adsorption efficiency, and provides a strong guarantee for high-quality product output.

[0041] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A vacuum hub telescopic mechanism for a composite machine, characterized in that: include: A wheel hub track (4), wherein the wheel hub track (4) extends along the width direction of the bottom material (2); A mounting seat (3), the mounting seat (3) being slidably connected to the hub track (4) and being located above the bottom material (2); A label delivery component (6), which is arranged at the feeding end of the mounting seat (3) and is used to deliver the embedding material (1) into the interior of the mounting seat (3); A cutting assembly (7) and a vacuum hub assembly (5), wherein the cutting assembly (7) and the vacuum hub assembly (5) are both arranged inside a mounting seat (3) and distributed up and down, and a gap is formed between the cutting assembly (7) and the vacuum hub assembly (5) for the embedding material (1) to pass through, the cutting assembly (7) is used to cut the embedding material (1), and the vacuum hub assembly (5) is used to absorb and position the embedding material (1), and to attach the embedding material (1) to the surface of a bottom material (2) below.

2. The vacuum hub telescopic mechanism of a composite machine according to claim 1, characterized in that: The vacuum hub assembly (5) comprises a negative pressure driving member, a vacuum hub roller (52) rotatably connected to the mounting seat (3), a vacuum hub driving member (51) for driving the vacuum hub roller (52) to rotate, and an outer cylinder (53) sleeved on the outer peripheral surface of the vacuum hub roller (52), the outer peripheral surface of the vacuum hub roller (52) is provided with a plurality of circumferentially distributed chambers (521), the peripheral wall of the outer cylinder (53) is evenly provided with a plurality of adsorption holes (531) connected to the chambers (521), and the negative pressure driving member is used to evacuate the interior of the chamber (521) to form a negative pressure. The vacuum hub telescopic mechanism of a composite machine according to claim 1 is characterized in that: the cutting assembly (7) includes a cutting roller (73) rotatably connected to the mounting seat (3), a plurality of cutters (72) arranged on the peripheral wall of the cutting roller (73), and a cutting motor (71) for driving the cutting roller (73) to rotate, and the plurality of cutters (72) extend along the axial direction of the cutting roller (73) and are distributed along the circumference of the cutting axis.

3. The vacuum hub telescopic mechanism of a composite machine according to claim 3, characterized in that: The outer peripheral surface of the cutting roller (73) is provided with a plurality of mounting grooves (731), and the mounting grooves (731) are used to mount the cutting knife (72), and the blade portion of the cutting knife (72) extends out of the mounting grooves (731).

4. The vacuum hub telescopic mechanism for a composite machine according to claim 1, characterized in that: The label delivery assembly (6) comprises a label delivery active roller (61) rotatably connected to the mounting groove (731), a label delivery motor (65) for driving the label delivery active roller (61) to rotate, a sliding frame (63) slidably connected to the mounting seat (3), and a label delivery driven roller (62) rotatably connected to the sliding frame (63), wherein the distance between the label delivery active roller (61) and the label delivery driven roller (62) can be adjusted according to the thickness of the embedded layer.

5. The vacuum hub telescopic mechanism for a composite machine according to claim 5, characterized in that: The mounting seat (3) is provided with a lifting member (64) for driving the sliding frame (63) to move radially toward the label-feeding active roller (61).

6. The vacuum hub telescopic mechanism for a composite machine according to claim 5, characterized in that: A guide member (8) for guiding the embedded material (1) is arranged in the mounting seat (3), and the guide member (8) is connected to the gap between the cutting assembly (7) and the vacuum hub assembly (5) and the gap between the label-feeding active roller (61) and the label-feeding driven roller (62).

7. The vacuum hub telescopic mechanism for a composite machine according to claim 7, characterized in that: The guide member (8) comprises two guide plates (81) arranged vertically, a gap between the two guide plates (81) allowing the embedded material (1) to pass through, a plurality of guide strips (82) being arranged at one end of the two guide plates (81) facing the label conveying assembly (6), a plurality of axially distributed annular grooves (9) being arranged on the outer circumference of the label conveying active roller (61) and the outer circumference of the label conveying driven roller (62), a plurality of guide strips (82) corresponding to the plurality of annular grooves (9) one by one, and the guide strips (82) passing through the corresponding annular grooves (9).

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