Non-woven fabric embossing machine

Abstract

The utility model belongs to the technical field of embossing, and particularly relates to a non-woven fabric embossing machine. Comprising an embossing roller assembly, and the embossing roller assembly comprises an embossing roller and a driving mechanism for driving the embossing roller to rotate; the height adjusting mechanism is connected with the embossing roller and is used for automatically adjusting the height of the embossing roller according to the thickness of the non-woven fabric so as to ensure the uniformity and stability of the embossing effect; the thickness detection mechanism is arranged at the feeding end of the embossing roller and used for detecting the thickness of the non-woven fabric to be embossed in real time and transmitting a detection signal to the control system; and the control system is electrically connected with the thickness detection mechanism and the height adjusting mechanism, and the control system controls the height adjusting mechanism to automatically adjust the height of the embossing roller according to a detection signal transmitted by the thickness detection mechanism. According to the non-woven fabric embossing machine, the height of the embossing roller can be automatically adjusted according to the thickness of non-woven fabric, and the uniformity and stability of the embossing effect are ensured.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the embossing technical field especially relates to a non - woven fabric embossing machine. BACKGROUND

[0002] With the rapid development of non - woven fabric industry, the continuous optimization and technical progress of production process, embossing machine plays an important role in the production process of non - woven fabric. Embossing technology uses embossing roller to emboss non - woven fabric, which can not only improve the appearance of non - woven fabric, but also improve its physical properties.

[0003] The utility model discloses a non - woven fabric embossing mechanism discloses a kind of non - woven fabric embossing mechanism, including rack and air heater, rack is rotatably provided with carrier roller and embossing roller, wherein air heater is used to provide hot air to embossing roller, air duct is provided in embossing roller and extends along the axis of embossing roller, the air outlet end of air heater is communicated with air duct to blow hot air into air duct, and one end of embossing roller is provided with back air hole communicated with air duct;The air supply component with air outlet is further included in embossing mechanism, the air supply component is communicated with back air hole for conveying hot air output by back air hole, and the air outlet of air supply component is located at the cloth inlet side of embossing roller and is directed to the upper surface or lower surface of non - woven fabric;In this way, hot air can be more fully contacted with embossing roller, so that heat can be more fully transferred to embossing roller.

[0004] Although the technology uses the technology that can make hot air fully contact with embossing roller, this technology realizes the efficient heat transfer to embossing roller to some extent, ensures the temperature stability of embossing process, and improves embossing quality. However, the technology still has obvious limitations. In actual production, the thickness of non - woven fabric is various due to different application scenarios. However, the existing embossing machine cannot adjust the height of embossing roller according to the thickness of non - woven fabric, so that it is only suitable for the production of non - woven fabric with specific thickness. When facing non - woven fabric with different thickness, it is either too deep to damage the structure of non - woven fabric, or too shallow to achieve the desired texture effect and functional requirements, which seriously limits the application range and production flexibility of embossing machine, and cannot meet the growing diversified market demand. UTILITY MODEL CONTENTS

[0005] The utility model aims at the above -mentioned technical problem, provides a kind of non - woven fabric embossing machine that can automatically adjust the height of embossing roller according to the thickness of non - woven fabric, so that the uniformity and stability of embossing effect of different thickness non - woven fabric can be ensured when passing through embossing roller.

[0006] Therefore, the utility model provides a kind of non - woven fabric embossing machine, which comprises:

[0007] Embossing roller assembly, embossing roller assembly contains embossing roller and the drive mechanism that drives the rotation of embossing roller;

[0008] The height adjusting mechanism is connected with the embossing roller and is used for automatically adjusting the height of the embossing roller according to the thickness of the non-woven fabric, so as to ensure the uniformity and stability of the embossing effect.

[0009] The thickness detection mechanism is arranged at the feeding end of the embossing roller and is used for detecting the thickness of the non-woven fabric to be embossed in real time and transmitting a detection signal to the control system.

[0010] The control system is electrically connected with the thickness detection mechanism and the height adjusting mechanism respectively, and the control system controls the height adjusting mechanism to automatically adjust the height of the embossing roller according to the detection signal transmitted by the thickness detection mechanism, so that the non-woven fabric with different thicknesses can all receive appropriate pressure when passing through the embossing roller, thereby ensuring the uniformity and stability of the embossing effect.

[0011] In the above technical solution, further, the height adjusting mechanism comprises:

[0012] The base frame is provided with a base plate thereon;

[0013] The electric push rod is arranged on the base plate, and the electric push rod is electrically connected with the control system;

[0014] The support frame is arranged on the piston rod of the electric push rod;

[0015] The rotating shafts are rotatably arranged on the left and right sides of the support frame, and the embossing roller is arranged between the two rotating shafts; the driving mechanism is connected with one of the rotating shafts.

[0016] In any of the above technical solutions, further, the thickness detection mechanism comprises:

[0017] The bases are arranged on the left and right sides of the middle part of the base frame;

[0018] The support rollers are uniformly and spacedly arranged along the length direction of the base, and the support rollers are arranged between the two bases and are used for supporting the non-woven fabric;

[0019] The guide rods are arranged between the two bases, and the guide rods are two in total;

[0020] The sliding sleeves are slidably arranged on the guide rods;

[0021] The fixed frame is arranged between the two sliding sleeves on the same side;

[0022] The through slot is formed in the fixed frame, the support roller passes through the through slot, and the inner diameter of the through slot is greater than the outer diameter of the support roller;

[0023] The bidirectional ball screw is rotatably arranged between the two bases, and the fixed frame is threadedly connected with the bidirectional ball screw;

[0024] The hand wheel is arranged on the bidirectional ball screw;

[0025] The laser thickness gauges are arranged on opposite surfaces of the two fixed frames, and a plurality of laser thickness gauges are uniformly distributed along the length direction of the fixed frame and are electrically connected with the control system.

[0026] In any of the above technical solutions, further, the embossing roller is internally provided with an air duct extending along the length direction of the embossing roller; a hot air blower is arranged in the air duct of the embossing roller, and the hot air blower is in communication with the air duct and blows hot air into the air duct.

[0027] In any of the above technical solutions, further, the chassis is provided with a feeding mechanism for feeding the non-woven fabric, and the feeding mechanism comprises:

[0028] The fixed frame is arranged on the top of the chassis and located at the rear side of the embossing roller.

[0029] The bearing seat is arranged on the top and bottom of the fixed frame.

[0030] The transmission shaft is rotatably arranged between the two bearing seats and symmetrically distributed above and below.

[0031] The feeding roller is arranged on the transmission shaft.

[0032] The rack is arranged on the two sides of the bottom of the chassis.

[0033] The servo motor is arranged on the rack.

[0034] The synchronous wheel is arranged on the output shaft of the servo motor and the transmission shaft.

[0035] The synchronous belt is sleeved between the two synchronous wheels.

[0036] In any of the above technical solutions, further, the rear side of the top of the chassis is provided with an unwinding mechanism for supporting the non-woven fabric to be embossed, and the front side of the top of the chassis is provided with a winding mechanism for winding the embossed non-woven fabric.

[0037] In any of the above technical solutions, further, the unwinding mechanism and the winding mechanism comprise:

[0038] The support is arranged at the left and right ends of the front and rear sides of the chassis.

[0039] The groove is arranged at the top end of the support.

[0040] The feeding roller is rotatably arranged between the grooves of the two supports at the rear side and used for supporting the non-woven fabric to be embossed.

[0041] The winding roller is rotatably arranged between the grooves of the two supports at the front side and used for winding the embossed non-woven fabric.

[0042] The non-woven fabric body is sleeved on the feeding roller and the winding roller, and the non-woven fabric body passes through the feeding roller.

[0043] The driving motor is connected with the unwinding roller and the winding roller through an output shaft.

[0044] In any of the above technical solutions, further, the unwinding roller and the winding roller are provided with a locking mechanism for locking the non-woven fabric body, and the locking mechanism comprises:

[0045] The moving sleeve is slidingly arranged at the left and right ends of the unwinding roller and the winding roller.

[0046] The insert is arranged on the opposite surfaces of the two moving sleeves on the same side, and the insert is inserted into the inner diameter of the paper tube of the non-woven fabric body.

[0047] The threaded hole is formed in the moving sleeve.

[0048] The threaded hole is formed in the moving sleeve.

[0049] The handle is arranged on the threaded rod.

[0050] The utility model discloses the beneficial effect is:

[0051] 1、The thickness detection mechanism is through emitting laser beam and receiving reflected light, and the thickness of non-woven fabric is calculated quickly, and this detection signal is transmitted to the control system in the form of electric signal, after the control system receives the signal that thickness detection mechanism transmits, the height adjusting mechanism starts to execute the adjusting action of the height of the embossing roller, thereby realizing the accurate adjustment of the height of the embossing roller, and the non-woven fabric of different thicknesses can obtain accurate and suitable pressure in the embossing process, and then the uniformity and stability of embossing effect are ensured, the product quality is improved, the diversified production demand is satisfied, and the production efficiency and the applicability of equipment are improved.

[0052] 2、The hot air blower inhales ambient air and heats, then blows hot air into the embossing roller air duct, and the embossing roller starts to gradually heat, reaches the preset working temperature needs a certain time, and the hot air blower works continuously during the period, to ensure that the embossing roller is uniformly heated, and ensure that the non-woven fabric of different thicknesses can obtain suitable temperature conditions when embossing, and then the embossing effect is improved, the embossing pattern is clear and firm, the embossing defects caused by uneven temperature are avoided, and the quality of non-woven fabric products is improved.

[0053] 3、The servo motor drives the synchronous wheel on it to rotate, the transmission shaft is driven to rotate through the transmission of the synchronous belt, the transmission shaft drives the feeding roller to rotate, and the friction between the feeding roller and the non-woven fabric makes the non-woven fabric start to convey forward, so that the non-woven fabric is continuously and uniformly conveyed to the embossing roller during the embossing process, the uneven feeding is avoided, the production efficiency and product quality are improved, and the coherence and stability of the entire embossing operation process are ensured.

[0054] 4. The unwinding mechanism is arranged at the top rear side of the chassis, and the winding mechanism is arranged at the front side, the unwinding mechanism can stably release the non-woven fabric to be embossed, and ensure that it is continuously supplied to the embossing area; the winding mechanism timely and neatly winds the non-woven fabric after embossing, facilitates subsequent storage and transportation, ensures the smoothness of material circulation of the non-woven fabric embosser in the production process, improves the production efficiency, and also helps to ensure the stability of the embossing quality;

[0055] 5. According to the length of the non-woven fabric paper tube, the position of the moving sleeve is flexibly adjusted, so that the insert on the moving sleeve can be accurately inserted into the inner diameter of the paper tube of the non-woven fabric body, the rotating screw is rotated and tightened and abuts against the feeding roller or the winding roller, the friction force between the screw and the roller can prevent accidental sliding, thereby ensuring that the insert is always stably inserted into the paper tube, avoiding the loosening and falling phenomenon of the non-woven fabric, maintaining the normal unwinding and winding, and improving the product quality of the non-woven fabric embossing. BRIEF DESCRIPTION OF DRAWINGS

[0056] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0057] Figure 2 It is a schematic diagram of the three-dimensional structure of the adjusting mechanism of the utility model;

[0058] Figure 3 It is a schematic diagram of the three-dimensional structure of the utility model;

[0059] Figure 4 It is a first schematic diagram of the three-dimensional structure of the thickness detection mechanism of the utility model;

[0060] Figure 5 It is a second schematic diagram of the three-dimensional structure of the thickness detection mechanism of the utility model;

[0061] Figure 6 It is a schematic diagram of the three-dimensional structure of the feeding mechanism of the utility model;

[0062] Figure 7 It is a schematic diagram of the three-dimensional structure of the locking mechanism of the utility model;

[0063] Figure 8 It is a system framework diagram of the utility model;

[0064] The figure is marked as: 1, embossing roller assembly; 11, embossing roller; 12, driving mechanism; 2, height adjusting mechanism; 21, base frame; 22, base plate; 23, electric push rod; 24, support frame; 25, rotating shaft; 3, thickness detection mechanism; 31, base; 32, support roller; 33, guide rod; 34, sliding sleeve; 35, fixed frame; 36, through slot; 37, bidirectional ball screw; 38, hand wheel; 39, laser thickness gauge; 4, control system; 5, air duct; 51, hot air blower; 6, feeding mechanism; 61, fixed frame; 62, bearing seat; 63, transmission shaft; 64, feeding roller; 65, rack; 66, servo motor; 67, synchronous wheel; 68, synchronous belt; 7, unwinding mechanism; 8, winding mechanism; 781, support; 782, groove; 784, feeding roller; 785, winding roller; 786, non-woven fabric body; 787, driving motor; 9, locking mechanism; 91, moving sleeve; 92, insert; 93, threaded hole; 94, screw; 95, handle. DETAILED DESCRIPTION

[0065] The technical solutions in the embodiments of the present application will be clearly described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all other embodiments obtained by a person of ordinary skill in the art belong to the scope of protection of the present application.

[0066] In the description of the present application, it should be noted that the terms used herein are only for the purpose of describing the specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. For the convenience of description, the sizes of the various parts shown in the drawings are not drawn in accordance with the actual proportional relationship. The techniques, methods and devices known to those skilled in the relevant art can not be discussed in detail, but in appropriate cases, the techniques, methods and devices should be considered as part of the authorized description. In all examples shown and discussed herein, any specific value should be interpreted as merely exemplary, and not as a limitation. Therefore, other examples of exemplary embodiments can have different values. It should be noted that similar reference numerals and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0067] Embodiment 1:

[0068] As shown in Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 8 , the present embodiment provides a non-woven fabric embossing machine, comprising:

[0069] The embossing roller 11 assembly 1 comprises an embossing roller 11 and a driving mechanism 12 for driving the rotation of the embossing roller 11.

[0070] The height adjusting mechanism 2 is connected to the embossing roller 11 and is used to automatically adjust the height of the embossing roller 11 according to the thickness of the non-woven fabric, ensuring the uniformity and stability of the embossing effect.

[0071] The thickness detection mechanism 3 is arranged at the feeding end of the embossing roller 11 and is used to detect the thickness of the non-woven fabric to be embossed in real time and transmit the detection signal to the control system 4.

[0072] The control system 4 is electrically connected to the thickness detection mechanism 3 and the height adjusting mechanism 2, respectively. According to the detection signal transmitted by the thickness detection mechanism 3, the control system 4 controls the height adjusting mechanism 2 to automatically adjust the height of the embossing roller 11, so that the non-woven fabric of different thicknesses can obtain appropriate pressure when passing through the embossing roller 11, ensuring the uniformity and stability of the embossing effect.

[0073] In the technical solution, the thickness detection mechanism 3 is installed at the feeding end of the embossing roller 11, which can detect the thickness of the non-woven fabric to be embossed in real time and accurately. Whether it is a thin non-woven fabric used for sanitary products or a thick industrial non-woven fabric, the thickness data can be quickly and accurately obtained. The height adjusting mechanism 2 is connected to the embossing roller 11. When the control system 4 receives the non-woven fabric thickness signal from the thickness detection mechanism 3, it will immediately issue an instruction to the height adjusting mechanism 2 to automatically adjust the height of the embossing roller 11, ensuring that the embossing roller 11 is in the best working position when facing non-woven fabrics of different thicknesses. Through the precise adjustment of the height of the embossing roller 11 by the height adjusting mechanism 2, non-woven fabrics of different thicknesses can obtain the appropriate pressure when passing through the embossing roller 11. The pressure is neither too large to damage the non-woven fabric nor too small to affect the embossing effect, thereby ensuring the uniformity and stability of the embossing effect. The control system 4, as the core of the entire device, closely connects the thickness detection mechanism 3 and the height adjusting mechanism 2, realizes the full-automatic control from thickness detection to height adjustment, reduces the manual intervention, reduces the labor intensity, and improves the accuracy and consistency of production.

[0074] Workflow: When the non-woven fabric to be embossed is conveyed to the feed end of the embossing roller 11, the thickness detection mechanism 3 starts working, calculates the thickness of the non-woven fabric quickly by emitting a laser beam and receiving reflected light, and transmits this detection signal to the control system 4 in the form of an electrical signal. After receiving the signal from the thickness detection mechanism 3, the control system 4 analyzes and processes the signal. According to the preset algorithm and program, the control system 4 calculates the required height of the embossing roller 11 for the current non-woven fabric and generates corresponding control instructions. After receiving the instructions from the control system 4, the height adjustment mechanism 2 starts to execute the adjustment action of the height of the embossing roller 11, thereby realizing the precise adjustment of the height of the embossing roller 11. After the height of the embossing roller 11 is adjusted in place, the driving mechanism 12 drives the embossing roller 11 to rotate and performs embossing operation on the passing non-woven fabric. At this time, appropriate pressure is applied to the non-woven fabric, so that a uniform and stable embossed pattern is formed on the surface of the non-woven fabric, and the entire embossing process is completed. Subsequently, the embossed non-woven fabric continues to be conveyed backward and enters the next process. This cycle is repeated to realize continuous and efficient embossing production of non-woven fabric. In this way, the height of the embossing roller 11 is adjusted according to the thickness of the non-woven fabric, and through the automatic adjustment mechanism, non-woven fabrics of different thicknesses can all obtain precisely matched pressure in the embossing process, thereby ensuring the uniformity and stability of the embossing effect, improving product quality, meeting diversified production demands, and improving production efficiency and the applicability of the equipment.

[0075] As shown in Figure 1 , Figure 2 and Figure 8 , in the present embodiment, the optimized height adjustment mechanism 2 comprises:

[0076] a base frame 21, which is provided with a base plate 22;

[0077] an electric push rod 23, which is arranged on the base plate 22, and the electric push rod 23 is electrically connected with the control system 4;

[0078] a support frame 24, which is arranged on the piston rod of the electric push rod 23;

[0079] two rotating shafts 25, which are rotatably arranged on the left and right sides of the support frame 24, and the embossing roller 11 is arranged between the two rotating shafts 25; the driving mechanism 12 is connected with one of the rotating shafts 25.

[0080] In the technical solution, the chassis 21 and the base plate 22 provide a stable foundation support for the entire height adjustment mechanism 2. The chassis 21 ensures the stability of the mechanism during operation, preventing displacement due to vibration or external forces, and the base plate 22 provides a reliable mounting platform for components such as the electric push rod 23, ensuring the accurate relative positions between components, thereby ensuring the smoothness of the entire height adjustment process. The electric push rod 23 is electrically connected with the control system 4, serving as the power source for height adjustment. When the control system 4 issues adjustment instructions based on the non-woven fabric thickness detection signal, the electric push rod 23 can quickly respond by extending and retracting the piston rod to adjust the height of the support frame 24, thereby driving the embossing roller 11 to change height. This driving method has the characteristics of fast response speed and high precision, and can meet the real-time adjustment needs of the embossing roller 11 height for non-woven fabrics of different thicknesses. The support frame 24 is arranged on the piston rod of the electric push rod 23, responsible for carrying the embossing roller 11 and the related shaft 25. When the electric push rod 23 pushes the support frame 24 up and down, the support frame 24 can stably drive the embossing roller 11 to rise and fall synchronously, ensuring the smoothness of the embossing roller 11 during the height adjustment process. At the same time, the shaft 25 is rotatably arranged on the left and right sides of the support frame 24, not only providing rotational support for the embossing roller 11, allowing the embossing roller 11 to rotate smoothly under the drive of the driving mechanism 12 for embossing operation, but also ensuring the levelness of the embossing roller 11 during height adjustment, avoiding the influence of embossing effect due to inclination. The driving mechanism 12 is connected with one side of the shaft 25, providing rotational power for the embossing roller 11 to realize embossing operation on non-woven fabrics.

[0081] Workflow: When the control system 4 receives the non-woven fabric thickness signal from the thickness detection mechanism 3, and analyzes and calculates that the height of the embossing roller 11 needs to be adjusted, it will immediately transmit the command to the electric push rod 23 connected to the height adjusting mechanism 2. After receiving the command from the control system 4, the electric push rod 23 starts working. If the height of the embossing roller 11 needs to be raised, the piston rod will extend upwards; if the height needs to be lowered, the piston rod will retract downwards. In this process, the extension and retraction of the piston rod will drive the support frame 24 to move up and down synchronously, so that the up and down movement of the support frame 24 will directly drive the height adjustment of the embossing roller 11. During the adjustment process, the shaft 25 remains flexible in rotation on the support frame 24, ensuring that the embossing roller 11 always remains horizontal during the lifting process, avoiding tilting and affecting the subsequent embossing effect. When the height of the embossing roller 11 is adjusted to the appropriate position preset by the control system 4, the height adjusting mechanism 2 completes this adjustment task and waits for the next adjustment command. At this time, the driving mechanism 12 starts working, driving the shaft 25 connected to it to rotate, and then driving the embossing roller 11 to start rotating, preparing for the upcoming non-woven fabric embossing operation. When the non-woven fabric is transported to the embossing roller 11, it can be embossed under appropriate pressure, completing the entire embossing process. This cycle realizes continuous and efficient embossing production of non-woven fabrics of different thicknesses, and this automatic adjustment of the height of the embossing roller 11 according to the thickness of the non-woven fabric ensures that non-woven fabrics of different thicknesses can obtain appropriate pressure during embossing, thereby ensuring the uniformity and stability of the embossing effect, effectively improving the quality and production efficiency of non-woven fabric embossing.

[0082] As shown in Figure 1 , Figure 4 , Figure 5 and Figure 8 , in this embodiment, the optimized thickness detection mechanism 3 comprises:

[0083] a base 31 arranged on the left and right sides of the middle part of the chassis 21;

[0084] a support roller 32 having a plurality of uniformly spaced intervals along the length direction of the base 31, the support roller 32 being arranged between the two bases 31 for supporting the non-woven fabric;

[0085] a guide rod 33 arranged between the two bases 31, the guide rod 33 having two in total;

[0086] a sliding sleeve 34 slidingly arranged on the guide rod 33;

[0087] a fixed frame 35 arranged between the two sliding sleeves 34 on the same side;

[0088] a through slot 36 opened on the fixed frame 35, the support roller 32 passing through the through slot 36, the inner diameter of the through slot 36 being greater than the outer diameter of the support roller 32;

[0089] The bidirectional ball screw 37 is rotatably arranged between the two bases 31, and the fixed frame 35 is threadedly connected with the bidirectional ball screw 37.

[0090] The hand wheel 38 is arranged on the bidirectional ball screw 37.

[0091] The laser thickness gauge 39 is arranged on the opposite surfaces of the two fixed frames 35, and a plurality of laser thickness gauges 39 are uniformly and spacedly arranged along the length direction of the fixed frame 35, and the laser thickness gauges 39 are electrically connected with the control system 4.

[0092] In the technical solution, the base 31 is arranged on the left and right sides of the middle part of the chassis 21, a plurality of supporting rollers 32 are uniformly and spacedly arranged along the length direction of the base 31 and arranged between the two bases 31, which are mainly used for stably supporting the non-woven fabric, so as to ensure that the non-woven fabric is kept flat during the conveying process, and to avoid the influence of the accuracy of the thickness detection caused by the sagging or shaking of the non-woven fabric. The guide rod 33 is arranged between the two bases 31, the sliding sleeve 34 can slide on the guide rod 33, the fixed frame 35 is connected between the two sliding sleeves 34 on the same side, and the fixed frame 35 is threadedly connected with the bidirectional ball screw 37. By rotating the hand wheel 38 to drive the bidirectional ball screw 37 to rotate, the fixed frame 35 can be moved along the direction of the guide rod 33, so as to adjust the position of the laser thickness gauge 39 in the width direction of the non-woven fabric, and to meet the demand of the thickness detection of the non-woven fabric with different widths. A plurality of laser thickness gauges 39 are uniformly and spacedly arranged along the length direction of the fixed frame 35 on the opposite surfaces of the two fixed frames 35, and are electrically connected with the control system 4. The laser thickness gauge 39 utilizes the laser reflection principle, emits a laser beam to the surface of the non-woven fabric, accurately measures the thickness of the non-woven fabric through the reflected light, and transmits the detected thickness signal to the control system 4 in real time, so as to provide data basis for the subsequent height adjustment of the embossing roller 11.

[0093] Work flow: Before the non-woven fabric enters the embossing machine for embossing, the operator rotates the hand wheel 38 according to the width of the non-woven fabric, which drives the two-way ball screw 37 to rotate. Since the fixed frame 35 is threadedly connected with the two-way ball screw 37, the fixed frame 35 will move along the guide rod 33 until the laser thickness gauge 39 is adjusted to the appropriate detection position, ensuring that it can cover the entire width range of the non-woven fabric. When the non-woven fabric is conveyed to the support roller 32, it is stably supported and conveyed forward by the support roller 32. At this time, multiple laser thickness gauges 39 work simultaneously, emitting laser beams to the surface of the non-woven fabric. When the laser beams encounter the surface of the non-woven fabric, they are reflected back. The laser thickness gauge 39 accurately calculates the thickness of the non-woven fabric according to the time difference or phase difference between the emitted light and the reflected light. Multiple laser thickness gauges 39 detect multiple points along the width direction of the non-woven fabric, allowing the thickness data at different positions of the non-woven fabric to be obtained, ensuring the comprehensiveness and accuracy of the detection. The laser thickness gauge 39 converts the detected thickness data into electrical signals and transmits them to the control system 4 in real time. The control system 4 analyzes and processes these signals to calculate the average thickness of the non-woven fabric and the thickness variation. Based on the received thickness signals and in combination with the pre-set embossing process parameters, the control system 4 determines whether the height of the embossing roller 11 needs to be adjusted. If adjustment is needed, the control system 4 sends corresponding adjustment instructions to the electric push rod 23 in the height adjustment mechanism 2 to automatically adjust the height of the embossing roller 11, ensuring that non-woven fabrics of different thicknesses can receive appropriate pressure during embossing, and ensuring the uniformity and stability of the embossing effect. During the entire embossing process of the non-woven fabric, the thickness detection mechanism 3 continuously works to monitor the thickness variation of the non-woven fabric, providing dynamic thickness data to the control system 4 for precise control of the embossing process. This can stably support the non-woven fabric and adjust the position of the laser thickness gauge 39 according to actual needs to accurately detect the thickness of non-woven fabrics of different widths, providing accurate thickness data to the control system 4 for automatic adjustment of the height of the embossing roller 11, thereby ensuring the embossing effect of non-woven fabrics of different thicknesses.

[0094] Example 2:

[0095] The embodiment provides a non-woven fabric embossing machine, which has the following technical features in addition to the technical solutions of the above-mentioned embodiments.

[0096] As shown in Figure 2 and Figure 3 , in this embodiment, the optimized embossing roller 11 is provided with an air duct 5 extending along the length direction of the embossing roller 11. A hot air blower 51 is arranged in the air duct 5 of the embossing roller 11. The hot air blower 51 is in communication with the air duct 5, and blows hot air into the air duct 5.

[0097] In the technical solution, the hot air machine 51 serves as a heat source to convert electrical energy into heat energy, generate high-temperature hot air, and continuously deliver the hot air into the air duct 5 inside the embossing roller 11 through the structure connected with the air duct 5. The power and air blowing speed of the hot air machine 51 can be adjusted according to the material and thickness of the non-woven fabric and the embossing process requirements to meet the heat demand in different production scenarios. The air duct 5 is arranged along the length direction of the embossing roller 11, which enables the hot air to be uniformly distributed inside the embossing roller 11, avoiding the situation of local over-high or over-low temperature. When the hot air flows in the air duct 5, the heat is conducted to the surface of the embossing roller 11 through the roller wall, so that a uniform temperature field is formed on the surface of the embossing roller 11, ensuring that the same heat is obtained at each part of the non-woven fabric contacting the embossing roller 11 during the embossing process, and guaranteeing the consistency of the embossing quality.

[0098] Workflow: Before starting the non-woven fabric embossing machine, the operator sets the working parameters of the hot air machine 51 in the control system 4, such as temperature, air speed, etc., according to the characteristics of the non-woven fabric to be embossed and the embossing process requirements. After starting the embossing machine, the hot air machine 51 starts working to suck and heat the ambient air, and then blows hot air into the air duct 5 of the embossing roller 11. At this stage, the embossing roller 11 starts to gradually heat up, and it takes a certain time to reach the preset working temperature, during which the hot air machine 51 continues to work to ensure that the embossing roller 11 is uniformly heated. When the embossing roller 11 reaches the preset temperature, the embossing roller 11 is driven by the driving mechanism 12 to perform embossing operation on the non-woven fabric. At this time, the hot air machine 51 continues to blow hot air into the air duct 5 to maintain the working temperature of the embossing roller 11. Since the hot air is uniformly distributed in the air duct 5, the surface of the embossing roller 11 maintains a stable temperature, and when the non-woven fabric contacts the embossing roller 11, the required embossing pattern is formed on the surface of the non-woven fabric under the joint action of appropriate temperature and pressure. During the entire embossing process, the hot air machine 51 adjusts the working parameters in real time according to the feedback of the control system 4 to ensure that the temperature of the embossing roller 11 always remains within the set range. When the non-woven fabric embossing work is completed, the operator stops the operation of the embossing machine, and the hot air machine 51 stops blowing air first. As the embossing roller 11 no longer receives new heat, its temperature gradually decreases. After the temperature of the embossing roller 11 decreases to a safe range, the entire equipment completes the shutdown process. Before the next use, the start-up and preheating stage operations are repeated to ensure that the embossing machine performs non-woven fabric embossing work in the best working state. By blowing hot air into the air duct 5 extending along the length direction of the embossing roller 11 through the hot air machine 51, the surface temperature of the embossing roller 11 is uniform, ensuring that non-woven fabrics of different thicknesses can obtain appropriate temperature conditions during embossing, thereby improving the embossing effect, ensuring that the embossing pattern is clear and firm, avoiding embossing defects caused by uneven temperature, and improving the quality of non-woven fabric products.

[0099] Example 3:

[0100] The embodiment provides a non-woven fabric embossing machine, which comprises the technical scheme of the above embodiment and has the following technical features.

[0101] As shown in Figure 1 and Figure 6 In the embodiment, the optimized chassis 21 is provided with a feeding mechanism 6 for feeding non-woven fabric, and the feeding mechanism 6 comprises:

[0102] The fixed frame 61 is arranged on the top of the chassis 21 and located on the rear side of the embossing roller 11.

[0103] The bearing seat 62 is arranged on the upper and lower sides of the fixed frame 61.

[0104] The transmission shaft 63 is rotatably arranged between the two bearing seats 62 and symmetrically distributed in the up-down direction.

[0105] The feeding roller 64 is arranged on the transmission shaft 63.

[0106] The rack 65 is arranged on the bottom of the chassis 21.

[0107] The servo motor 66 is arranged on the rack 65.

[0108] The synchronous wheel 67 is arranged on the output shaft of the servo motor 66 and the transmission shaft 63.

[0109] The synchronous belt 68 is sleeved between the two synchronous wheels 67.

[0110] In the technical scheme, after the embossing machine is started, the servo motor 66 starts to operate, the output shaft of the servo motor 66 drives the synchronous wheel 67 to rotate, the synchronous wheel 67 on the transmission shaft 63 is also driven to rotate through the transmission of the synchronous belt 68, and then the transmission shaft 63 is driven to rotate. The rotation of the transmission shaft 63 drives the feeding roller 64 to rotate, and the friction between the feeding roller 64 and the non-woven fabric drives the non-woven fabric to start to be fed forward. When the non-woven fabric reaches the embossing roller 11, the non-woven fabric starts to be embossed under the joint action of the rotation of the embossing roller 11 and the feeding roller 64. When the non-woven fabric embossing work is completed, the operator turns off the servo motor 66, the servo motor 66 gradually slows down until it stops rotating, the feeding roller 64 also stops rotating, and the non-woven fabric stops feeding. Thus, stable and accurate feeding power is provided for the non-woven fabric embossing machine, the non-woven fabric is continuously and uniformly fed to the embossing roller 11 in the embossing process, the non-uniform feeding is avoided to cause poor embossing effect or production interruption, the production efficiency and product quality are improved, and the coherence and stability of the entire embossing operation process are ensured.

[0111] Embodiment 4:

[0112] The embodiment provides a non-woven fabric embossing machine, which comprises the technical scheme of the above embodiment and has the following technical features.

[0113] As Figure 1 , Figure 2 , Figure 6 and Figure 8 shown, in this embodiment, the optimized, the top rear side of the chassis 21 is provided with a pay-off mechanism 7 for supporting the embossed non-woven fabric, the top front side of the chassis 21 is provided with a winding mechanism 8 for winding the embossed non-woven fabric.

[0114] In this technical solution, the pay-off mechanism 7 is arranged at the top rear side of the chassis 21 and the winding mechanism 8 is arranged at the front side, the purpose is to build a complete and efficient non-woven fabric embossing production process. The pay-off mechanism 7 can stably release the non-woven fabric to be embossed, ensuring its continuous supply to the embossing area; the winding mechanism 8 timely and neatly winds the embossed non-woven fabric, facilitating subsequent storage and transportation. The two work together to ensure the smoothness of the material flow in the production process of the non-woven fabric embosser, improve the production efficiency, and also help to ensure the stability of the embossing quality.

[0115] The pay-off mechanism 7 is mainly used to support the non-woven fabric roll to be embossed, and through the internal rotating device, the roll can rotate freely, so as to smoothly release the non-woven fabric. During the pay-off process, the pay-off mechanism 7 needs to have certain tension control ability to ensure that the non-woven fabric maintains appropriate tension during the conveying process, avoiding wrinkles caused by relaxation or stretching deformation caused by excessive tension, providing stable material input for the subsequent embossing process. It is convenient for the operator to quickly replace the new roll when the non-woven fabric roll is about to run out, ensuring the continuity of production. The design of the pay-off mechanism 7 should consider the convenience and safety of operation, so that the operator can efficiently complete the roll replacement work.

[0116] The winding mechanism 8 is responsible for neatly winding the embossed non-woven fabric on the winding roller 785, and by adjusting the winding speed, it matches the overall running speed of the embosser, ensuring that the non-woven fabric does not stretch, twist, etc. during the winding process, ensuring the quality of the finished product. Similar to the pay-off mechanism 7, the winding mechanism 8 also needs to have tension adjustment ability. During the winding process, according to the material and thickness of the non-woven fabric, the winding tension is adjusted in real time, so that the wound non-woven fabric roll is compact and flat, facilitating subsequent handling and storage.

[0117] As Figure 2 and Figure 6 shown, in this embodiment, the optimized, the pay-off mechanism 7 and the winding mechanism 8 include:

[0118] The bracket 781 is arranged at the left and right ends of the front and rear sides of the chassis 21;

[0119] The groove 782 is opened at the top end of the bracket 781;

[0120] A feed roller 784 is rotatably arranged between the grooves 782 of the two rear side supports 781, and is used to support the non-woven fabric to be embossed;

[0121] A winding roller 785 is rotatably arranged between the grooves 782 of the two front side supports 781, and is used to wind the embossed non-woven fabric;

[0122] A non-woven fabric body 786 is sleeved on the feed roller 784 and the winding roller 785, and the non-woven fabric body 786 passes through the feed roller 64;

[0123] A driving motor 787 is connected with the output shaft of the driving motor 787 and the feed roller 784 and the winding roller 785.

[0124] In the technical solution, the rear side supports 781 are arranged at the left and right ends of the two sides of the chassis 21, and the grooves 782 opened at the top ends thereof provide stable support points for the feed roller 784. The feed roller 784 is rotatably arranged between the grooves 782, so that the non-woven fabric roll to be embossed sleeved thereon can be stably placed, avoiding shaking and deviation during unwinding, and ensuring the stability of the non-woven fabric release. The output shaft of the driving motor 787 is directly connected with the feed roller 784, providing a power source for the rotation of the feed roller 784. Through the regulation and control of the control system 4 on the driving motor 787, the speed of the feed roller 784 can be accurately adjusted according to different embossing process requirements, and the unwinding speed of the non-woven fabric is controlled. This ensures that the non-woven fabric maintains appropriate tension and speed when conveyed to the embossing area, preventing problems such as uneven embossing depth, blurred patterns, etc. caused by excessive or insufficient speed and uneven tension.

[0125] The front side supports 781 are also arranged at the left and right ends of the two sides of the chassis 21, and the winding roller 785 is rotatably installed between the grooves 782 and is responsible for tightly and neatly winding the embossed non-woven fabric. The winding roller 785 rotates quickly under the drive of the driving motor 787, realizing efficient winding of the non-woven fabric and ensuring the tightness and appearance quality of the finished non-woven fabric roll, facilitating subsequent storage and transportation. As the diameter of the non-woven fabric roll on the winding roller 785 increases, the driving motor 787 can automatically adjust the speed under the regulation and control of the control system 4. By monitoring the tension change in the winding process in real time, using the tension sensor feedback signal, the control system 4 dynamically adjusts the speed of the driving motor 787 to maintain stable tension during winding. This effectively avoids tension fluctuations caused by changes in roll diameter, preventing problems such as stretching deformation, wrinkles or loose winding of the non-woven fabric during winding.

[0126] Workflow: The operator first carefully wraps the non-woven fabric roll to be embossed around the feed roller 784, ensuring that the roll is securely installed and the center coincides with the axis of the feed roller 784. Then, place the feed roller 784 in the groove 782 at the top of the rear support 781, and check whether the feed roller 784 rotates smoothly. Subsequently, the starting end of the non-woven fabric is led out and passed through the feed roller 64, preparing for subsequent conveying. Finally, according to the material and thickness of the non-woven fabric and the requirements of the embossing process, set the initial speed of the drive motor 787 to determine the appropriate unwinding speed. The drive motor 787 starts to operate, driving the feed roller 784 to rotate, so that the non-woven fabric roll starts to release. As the feed roller 784 continues to rotate, the non-woven fabric is gradually conveyed to the feeding mechanism 6. Throughout the unwinding process, the tension sensor installed on the non-woven fabric conveying path monitors the tension of the non-woven fabric in real time and feeds back the signal to the control system 4. The control system 4 dynamically adjusts the speed of the drive motor 787 according to the overall running speed of the embossing machine and the tension feedback signal, ensuring that the unwinding speed matches the rhythm of the embossing process and maintaining stable conveying of the non-woven fabric.

[0127] When the remaining amount of the roll in the unwinding mechanism 7 is about to be used up, the operator removes the used feed roller 784 from the groove 782 after ensuring that the embossing machine stops safely, and replaces it with a new feed roller 784 wrapped with the non-woven fabric to be embossed. After reinstalling the feed roller 784, check its rotation flexibility and the connection of the starting end of the non-woven fabric with the feed roller 64 again, and start the embossing machine after confirming that there is no error. The unwinding mechanism 7 continues to operate according to the set parameters.

[0128] When the embossed non-woven fabric is transported to the winding mechanism 8 by the feeding mechanism 6, the driving motor 787 is started to drive the winding roller 785 to start winding the non-woven fabric. During winding, the tension sensor installed near the winding roller 785 monitors the tension of the non-woven fabric in real time and feeds back the signal to the control system 4. According to the tension feedback signal, the control system 4 automatically adjusts the rotating speed of the driving motor 787 to keep the winding tension within the set stable range. In addition, as the diameter of the non-woven fabric roll on the winding roller 785 increases, the control system 4 will automatically adjust the motor speed according to the pre-set algorithm to ensure that the winding process always maintains a constant speed and ensures the winding quality. When the non-woven fabric on the winding roller 785 reaches the predetermined roll diameter or weight, the operation of the driving motor 787 is immediately stopped. The operator removes the wound non-woven fabric roll from the winding roller 785 and replaces the new winding roller 785 to prepare for the next winding work. After confirming that the new winding roller 785 is installed correctly, the embossing machine is restarted and the winding mechanism 8 continues to operate, thus realizing reliable support and uniform release of the non-woven fabric to be embossed, efficient and neat winding of the embossed non-woven fabric, ensuring continuous production process and improving production efficiency. At the same time, with the precise power control of the driving motor 787, different non-woven fabric materials and embossing process requirements can be adapted to ensure the transportation quality of the non-woven fabric before and after embossing, and avoid embossing defects or production stagnation caused by material transportation problems.

[0129] As shown in Figure 1 , Figure 6 and Figure 7 , in the present embodiment, the optimized unwinding roller 784 and winding roller 785 are provided with a locking mechanism 9 for locking the non-woven fabric body 786, and the locking mechanism 9 comprises:

[0130] The moving sleeve 91 is slidingly arranged at the left and right ends of the unwinding roller 784 and the winding roller 785.

[0131] The insert 92 is arranged on the opposite surfaces of the two moving sleeves 91 on the same side, and the insert 92 is inserted into the inner diameter of the paper tube of the non-woven fabric body 786.

[0132] The threaded hole 93 is formed in the moving sleeve 91.

[0133] The screw rod 94 is threadedly arranged in the threaded hole 93, and the screw rod 94 abuts against the unwinding roller 784 and the winding roller 785 after being screwed.

[0134] The handle 95 is arranged on the screw rod 94.

[0135] In the technical solution, the mobile sleeve 91 can slide at the left and right ends of the unwinding roller 784 and the winding roller 785, and the operator can flexibly adjust the position of the mobile sleeve 91 according to the length of the non-woven fabric paper tube. When the mobile sleeve 91 is adjusted in place, the inserts 92 on the opposite faces of the two mobile sleeves 91 on the same side can be accurately inserted into the inner diameter of the paper tube of the non-woven fabric body 786, fixing the paper tube from both ends and limiting the axial movement of the non-woven fabric on the roller, thereby ensuring the stability of the non-woven fabric position during unwinding and winding. Threaded holes 93 are formed in the mobile sleeve 91, and a screw rod 94 is threadedly arranged in the threaded holes. When the inserts 92 are inserted into the paper tube, the screw rod 94 is rotated and tightened to abut against the unwinding roller 784 or the winding roller 785. The friction between the screw rod 94 and the roller can prevent the mobile sleeve 91 from accidentally sliding during operation, thereby ensuring that the inserts 92 are always stably inserted into the paper tube and avoiding the loosening and falling of the non-woven fabric, thereby maintaining the normal unwinding and winding. The handle 95 is arranged on the screw rod 94, providing a force point for the operator to easily rotate the screw rod 94. When installing and dismounting the non-woven fabric roll, the operator only needs to rotate the handle 95 to quickly tighten and loosen the screw rod 94, thereby improving work efficiency and reducing labor intensity.

[0136] When the non-woven fabric roll is about to be used up and a new roll needs to be replaced, the operator first stops the operation of the embossing machine. Then, the operator reversely rotates the screw rod 94 by holding the handle 95, so that the screw rod 94 is separated from the unwinding roller 784 and the mobile sleeve 91 is loosened. The inserts 92 are pulled out of the inner diameter of the paper tube, the used non-woven fabric roll is removed, and then a new non-woven fabric roll is installed and locked on the unwinding roller 784 according to the steps in the installation and locking stage, thereby preparing for the next unwinding. In this way, the non-woven fabric body 786 is tightly connected with the unwinding roller 784 and the winding roller 785, and stable operation is ensured. Through the locking mechanism 9, uneven tension, poor feeding, and irregular winding caused by non-woven fabric sliding can be effectively prevented, thereby ensuring the stability and efficiency of the entire production process of the embossing machine and improving the product quality of the non-woven fabric embossing.

[0137] The embodiments of the present application are described above in combination with the drawings, and the embodiments and features in the embodiments in the present application can be combined with each other without conflict, the present application is not limited to the above specific embodiments, the above specific embodiments are only illustrative and not limiting, and a person of ordinary skill in the art can make many forms under the inspiration of the present application without departing from the scope of the present application and the protection scope of the claims, which all belong to the protection of the present application.

Claims

1. A nonwoven embosser characterized by, The utility model relates to a non -woven fabric embossing device, including: Embossing roller assembly (1), the embossing roller assembly (1) includes embossing roller (11) and drive mechanism (12) of driving the rotation of embossing roller (11); Height adjusting mechanism (2) is connected with embossing roller (11), is used for automatically adjusting the height of embossing roller (11) according to the thickness of non -woven fabric, ensures the uniformity and stability of embossing effect; Thickness detection mechanism (3) is arranged at the feeding end of embossing roller (11), is used for real -time detection the thickness of the non -woven fabric to be embossed, and the detection signal is transmitted to control system (4); Control system (4) is electrically connected with thickness detection mechanism (3) and height adjusting mechanism (2) respectively, the control system (4) is transmitted according to the detection signal of thickness detection mechanism (3), controls height adjusting mechanism (2) and automatically adjusts the height of embossing roller (11), thereby guaranteeing that the non -woven fabric of different thicknesses can obtain pressure when passing through embossing roller (11), ensure the uniformity and stability of embossing effect.

2. The embosser according to claim 1, wherein The height adjusting mechanism (2) includes: Chassis (21) is equipped with base plate (22) on it; Electric push rod (23) is arranged on the base plate (22), and the electric push rod (23) is electrically connected with the control system (4); Support frame (24) is arranged on the piston rod of the electric push rod (23); Rotating shaft (25) is rotatably arranged on the left and right sides of the support frame (24), and the embossing roller (11) is arranged between the two rotating shafts (25);The drive mechanism (12) is connected with one side of the rotating shaft (25).

3. The nonwoven embosser of claim 2, wherein The thickness detection mechanism (3) includes: Base (31) is arranged on the left and right sides of the middle part of the chassis (21); Support roller (32) is uniformly spaced along the length direction of the base (31), and the support roller (32) is arranged between the two bases (31) and is used for supporting non -woven fabric; Guide rod (33) is arranged between the two bases (31), and the guide rod (33) has two; Sliding sleeve (34) is slidably arranged on the guide rod (33); Fixed frame (35) is arranged between the two sliding sleeves (34) on the same side; Through groove (36) is formed in the fixed frame (35), the support roller (32) passes through the through groove (36), and the inner diameter of the through groove (36) is greater than the outer diameter of the support roller (32); Two -way ball screw (37) is rotatably arranged between the two bases (31), and the fixed frame (35) is threadedly connected with the two -way ball screw (37); Hand wheel (38) is arranged on the two -way ball screw (37); Laser thickness gauge (39) is arranged on the opposite sides of the two fixed frames (35), and the laser thickness gauge (39) has a plurality of and is uniformly spaced along the length direction of the fixed frame (35), and the laser thickness gauge (39) is electrically connected with the control system (4).

4. The nonwoven embosser of claim 1 wherein, The embossing roller (11) is internally provided with an air duct (5) extending along the length direction of the embossing roller (11); the air duct (5) of the embossing roller (11) is provided with a hot air blower (51) in communication with the air duct (5), and the hot air blower (51) blows hot air into the air duct (5).

5. The nonwoven embosser of claim 2 wherein, The chassis (21) is provided with a feeding mechanism (6) for feeding the non-woven fabric, the feeding mechanism (6) comprises: a fixed frame (61) arranged on the top of the chassis (21) on the front and rear sides, the fixed frame (61) is located on the rear side of the embossing roller (11); a bearing seat (62) arranged on the upper and lower sides of the fixed frame (61); a transmission shaft (63) rotatably arranged between the two bearing seats (62), the transmission shaft (63) is symmetrically distributed upward and downward; a feeding roller (64) arranged on the transmission shaft (63); a rack (65) arranged on the two sides of the bottom of the chassis (21); a servo motor (66) arranged on the rack (65); a synchronous wheel (67) arranged on the output shaft of the servo motor (66) and the transmission shaft (63); a synchronous belt (68) sleeved between the two synchronous wheels (67).

6. A nonwoven embosser as defined in claim 5, wherein The top rear side of the chassis (21) is provided with an unwinding mechanism (7) for supporting the non-woven fabric to be embossed, and the top front side of the chassis (21) is provided with a winding mechanism (8) for winding the embossed non-woven fabric.

7. A nonwoven embosser as defined in claim 6, wherein The unwinding mechanism (7) and the winding mechanism (8) comprise: a support (781) arranged on the left and right ends of the front and rear sides of the chassis (21); a groove (782) formed in the top end of the support (781); a feeding roller (784) rotatably arranged between the grooves (782) of the two supports (781) on the rear side for supporting the non-woven fabric to be embossed; a winding roller (785) rotatably arranged between the grooves (782) of the two supports (781) on the front side for winding the embossed non-woven fabric; a non-woven fabric body (786) sleeved on the feeding roller (784) and the winding roller (785), and the non-woven fabric body (786) passes through the feeding roller (64); a drive motor (787) whose output shaft is connected with the feeding roller (784) and the winding roller (785).

8. The nonwoven embosser of claim 7, wherein, The feeding roller (784) and the winding roller (785) are provided with a locking mechanism (9) for locking the non-woven fabric body (786), and the locking mechanism (9) comprises: a moving sleeve (91) slidably arranged on the left and right ends of the feeding roller (784) and the winding roller (785); an insert (92) arranged on the opposite surfaces of the two moving sleeves (91) on the same side, the insert (92) is inserted into the inner diameter of the paper tube of the non-woven fabric body (786); a threaded hole (93) formed in the moving sleeve (91); a screw rod (94) threadedly arranged in the threaded hole (93), the screw rod (94) abuts against the feeding roller (784) and the winding roller (785) after being screwed; a handle (95) arranged on the screw rod (94).

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