Width-adjustable calender for artificial leather

Abstract

The utility model provides a width-adjustable calender for artificial leather, which belongs to the field of artificial leather production and comprises a support, a fixed calendering roller and an adjustable calendering roller which can be adjusted are mounted on the support; the width of the cutting assembly is adjustable; the adjusting block and the fixed block are rotationally connected with rotating shafts, the outer portions of the rotating shafts are round, the inner portions of the rotating shafts are provided with rectangular grooves, rectangular rods capable of being locked are arranged in the two horizontally-opposite rectangular grooves, the rotating shafts are sleeved with movably-arranged sleeves, the sleeves are fixed to the rotating shafts through fastening bolts, and cutters are fixed to the sleeves. The rectangular rod and the rotating shaft are firmly fixed through the locking bolt, loosening and sliding are prevented, and the cutting precision is guaranteed; the cutter is accurate in adjustment and convenient to replace, the driving mechanism can guarantee synchronous rotation of the upper rotating shaft and the lower rotating shaft, the cutting quality and the production efficiency are effectively improved, and reworking is avoided.

Description

Technical Field

[0001] This utility model relates to the field of artificial leather production technology, and in particular to a calender for artificial leather with adjustable width. Background Technology

[0002] Artificial leather is a type of plastic product that resembles leather in appearance and feel and can be used as a substitute for it. It is usually made by coating synthetic resin and various plastic additives with fabric as the base. There are three main types: PVC artificial leather, PU artificial leather and PU synthetic leather.

[0003] The prior art, disclosed in CN112917792A, describes an adjustable calender for producing PVC artificial leather. Pulling the pull ring moves the pull rod, which in turn moves the pressure plate, separating it from the extrusion groove. This pushes the roller cutter, causing it to move on the cutting shaft and adjust its position. Releasing the pull ring allows the pressure plate to return to its original position under the elastic deformation restoring force of the spring, keeping it firmly against the extrusion groove and fixing the position of the roller cutter.

[0004] The aforementioned prior art uses the elastic force of a spring to fix the roller cutter. This fixing effect is unstable and easily leads to the roller cutter moving, which in turn reduces the cutting quality and requires rework. It has drawbacks in practical use. Therefore, this application proposes a calender for artificial leather with adjustable width. Utility Model Content

[0005] In view of the shortcomings of the existing technology, this utility model provides a calender for artificial leather with adjustable width.

[0006] An embodiment of this utility model provides a calendering machine for adjustable-width artificial leather, comprising:

[0007] A support frame on which a fixed calendering roller and an adjustable calendering roller are mounted;

[0008] An adjustable-width cutting assembly includes two fixed blocks fixed on a bracket and two adjustable blocks movably disposed above the fixed blocks. Each of the adjustable blocks and fixed blocks is rotatably connected to a rotating shaft with a circular outer surface and a rectangular groove inside. Two horizontally opposite rectangular grooves are provided with lockable rectangular rods. A movably disposed sleeve is fitted on the rotating shaft. The sleeve is fixed to the rotating shaft by fastening bolts, and a cutter is fixed on the sleeve.

[0009] Furthermore, a locking bolt is threaded onto the rotating shaft, and the locking bolt abuts against the rectangular rod.

[0010] Furthermore, a connecting plate is fixed on each of the two adjusting blocks to slide against the bracket, and an electric push rod is installed on the bracket, with the output end of the electric push rod fixedly connected to the connecting plate.

[0011] Furthermore, it also includes a drive mechanism for driving the rotating shaft to rotate. The drive mechanism includes a drive box mounted on an adjusting block and a fixing block on the same side. The drive box is provided with a meshing bevel gear. A short shaft is fixed on the bevel gear. The short shaft passes through the drive box and is rotatably connected to it. The short shaft is fixedly connected to the rotating shaft. A motor is mounted on one of the drive boxes. A connecting shaft is fixed to the output end of the motor. The connecting shaft is fixedly connected to the bevel gear.

[0012] Furthermore, a drive tube and a square rod are fixed on the two vertically distributed short axes, respectively, with the drive tube sleeved on the outside of the square rod and slidably disposed.

[0013] Furthermore, the interior of the drive tube is square-shaped, and the exterior of the drive tube is circular-shaped.

[0014] Compared with the prior art, the present invention has the following beneficial effects:

[0015] This invention uses locking bolts to firmly fix the rectangular rod to the rotating shaft, preventing loosening and slippage and ensuring cutting accuracy. The cutter is also precisely adjustable and easy to replace. The drive mechanism ensures that the upper and lower rotating shafts rotate synchronously, effectively improving cutting quality and production efficiency and avoiding rework. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a width-adjustable artificial leather calender as described in an embodiment of this utility model.

[0017] Figure 2 This is a schematic diagram of the vertical tube in a width-adjustable artificial leather calender as described in an embodiment of this utility model.

[0018] Figure 3 This is a schematic diagram of the sleeve in a calender for adjustable-width artificial leather, as described in an embodiment of this utility model.

[0019] Figure 4 This is a schematic diagram of a bevel gear in a width-adjustable artificial leather calender as described in an embodiment of this utility model.

[0020] In the above figures: 1 bracket, 2 fixed pressing roller, 3 adjusting pressing roller, 4 electric push rod, 5 connecting plate, 6 adjusting block, 7 fixing block, 8 rotating shaft, 9 drive box, 10 motor, 11 drive tube, 12 rectangular rod, 13 cutter, 14 sleeve, 15 square rod, 16 bevel gear, 17 connecting shaft, 18 short shaft. Detailed Implementation

[0021] The technical solution of this utility model will be further described below with reference to the accompanying drawings and embodiments.

[0022] like Figures 1-4 As shown in the figure, this utility model embodiment proposes a calender for adjustable width artificial leather, comprising:

[0023] Support bracket 1, serving as the foundation for the entire rolling mill, is made of high-strength, high-stability metal materials, such as high-quality carbon structural steel, to ensure it can withstand significant pressure and vibration during equipment operation and maintain overall structural stability. Support bracket 1 features a wide base equipped with adjustable anchor bolts, facilitating installation and leveling in various ground conditions and ensuring stable equipment operation.

[0024] The calendering roll assembly includes a fixed calendering roll 2 and an adjustable calendering roll 3. The fixed calendering roll 2 is securely mounted on the support 1 via bearings. Its surface is finely machined, exhibiting high hardness and excellent wear resistance, effectively ensuring the flatness and smoothness of the artificial leather surface during calendering. The adjustable calendering roll 3 is mounted on the support 1 via a special adjustment mechanism. This mechanism employs a precision screw-nut transmission structure, coupled with a high-precision displacement sensor, to accurately control the position of the adjustable calendering roll 3, achieving precise adjustment of the calendering gap to accommodate the calendering requirements of artificial leathers of different thicknesses and materials. The surface of the adjustable calendering roll 3 is also specially treated, possessing excellent anti-sticking and wear resistance, reducing the adhesion of artificial leather during calendering and improving production efficiency.

[0025] The width-adjustable cutting assembly is one of the core innovations of this calender. It mainly consists of components such as a fixed block 7, an adjusting block 6, a rotating shaft 8, a rectangular rod 12, a sleeve 14, a cutter 13, a connecting plate 5, and an electric push rod 4.

[0026] Two fixed blocks 7 are securely fixed to the bracket 1, providing a stable support base for the entire cutting assembly. Two adjusting blocks 6 are movably positioned above the fixed blocks 7, and through precise guiding structures, such as linear guides and sliders, ensure that the adjusting blocks 6 can move smoothly and accurately. Both the adjusting blocks 6 and the fixed blocks 7 are rotatably connected to rotating shafts 8. The rotating shafts 8 are made of high-strength, high-precision alloy steel, and their surfaces are hardened to improve their hardness and wear resistance, ensuring long-term stability.

[0027] The rotating shaft 8 has a circular outer surface and a rectangular groove inside. Two horizontally opposite rectangular grooves contain lockable rectangular rods 12. The dimensions of the rectangular rods 12 are precisely matched to the rectangular grooves to ensure stable torque transmission during rotation. A locking bolt is threaded onto the rotating shaft 8. The end of the locking bolt has a high-strength rubber washer. When the locking bolt is tightened, the rubber washer tightly abuts against the rectangular rods 12, increasing friction and firmly fixing the rectangular rods 12 to the rotating shaft 8. This prevents loosening or relative slippage during cutting, ensuring cutting accuracy and stability.

[0028] A movable sleeve 14 is fitted onto the rotating shaft 8. The inner diameter of the sleeve 14 is clearance-fitted with the outer diameter of the rotating shaft 8, ensuring smooth sliding of the sleeve 14 on the rotating shaft 8. The sleeve 14 is fixed to the rotating shaft 8 by fastening bolts with anti-loosening structures, such as lock nuts or anti-loosening washers, to prevent loosening due to vibration during equipment operation. A cutter 13 is fixed to the sleeve 14. The cutter 13 is made of high-hardness, high-toughness alloy material, and its blade is finely ground, possessing extremely high sharpness and wear resistance, ensuring a smooth, burr-free cut surface. After loosening the fastening bolts, the positions of the sleeve 14 and the cutter 13 can be precisely adjusted. The adjustment range can be designed according to actual production needs, with an adjustment accuracy of ±0.1mm to meet the cutting requirements of artificial leather of different widths. After adjustment, tightening the fastening bolts again securely locks the sleeve 14, ensuring the stable position of the cutter 13 during cutting.

[0029] When it is necessary to replace the cutter 13, simply loosen the locking bolts first, so that the rectangular rod 12 is not in contact with the rotating shaft 8 on one side. At this time, the connection between the rotating shafts 8 is released, and the rod is in a free state. Then, loosen the fastening bolts, and the sleeve 14 and the cutter 13 can be easily removed from the rotating shaft 8 for cutter replacement or maintenance. This convenient cutter replacement structure greatly reduces equipment downtime and improves production efficiency.

[0030] Two adjusting blocks 6 are fixed with connecting plates 5 that slide against the bracket 1. The connecting plates 5 are made of high-strength aluminum alloy, which reduces weight while ensuring strength. An electric push rod 4 is installed on the bracket 1. The electric push rod 4 is a high-precision, high-thrust servo electric push rod, and its output end is fixedly connected to the connecting plates 5. By controlling the extension and retraction of the electric push rod 4, the distance between the upper and lower side cutters 13 can be precisely adjusted. During the adjustment process, the displacement sensor of the electric push rod 4 provides real-time feedback of position information to ensure the precision and accuracy of the adjustment. This design not only facilitates the placement of the artificial leather to be cut but also allows for flexible adjustment of the distance between the cutters 13 according to different thicknesses of artificial leather, ensuring that the cutters 13 can completely cut the artificial leather and avoiding incomplete or excessive cutting.

[0031] The drive mechanism is used to drive the rotating shaft 8 to rotate, thereby driving the cutter 13 to perform cutting operations. It includes a drive box 9 mounted on the same side adjustment block 6 and fixing block 7. The drive box 9 adopts a sealed design, which has good dustproof and waterproof performance and can effectively protect the internal transmission components from the influence of the external environment.

[0032] The drive housing 9 contains a meshing bevel gear 16. The bevel gear 16 is made of high-quality alloy steel and has undergone carburizing and quenching treatment, resulting in high strength, high hardness, and good wear resistance, enabling it to withstand large transmission torques. A short shaft 18 is fixed to the bevel gear 16, passing through the drive housing 9 and rotatably connected to it via a high-precision bearing, ensuring smooth and accurate rotation. The short shaft 18 is fixedly connected to the rotating shaft 8, realizing power transmission.

[0033] One of the drive boxes 9 is equipped with a motor 10. The motor 10 is a high-performance AC servo motor, which has the advantages of fast response speed, high control precision, and wide speed range. The output end of the motor 10 is fixed with a connecting shaft 17, which is fixedly connected to a bevel gear 16, so as to transmit the power of the motor 10 to the bevel gear 16, thereby driving the rotating shaft 8 to rotate.

[0034] A drive tube 11 and a square rod 15 are fixed to two vertically distributed short shafts 18, respectively. The drive tube 11 is fitted over the square rod 15 and slidably disposed. The interior of the drive tube 11 is square-shaped, fitting tightly with the square rod 15 to ensure stable torque transmission during rotation; the exterior of the drive tube 11 is circular, facilitating fixed connection with the short shafts 18. This design allows the upper and lower rotating shafts 8 to maintain synchronous rotation when adjusting the spacing of the cutters 13, ensuring both synchronicity and cutting quality.

[0035] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model and are not intended to limit it. Although this utility model has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of this utility model without departing from the spirit and scope of the technical solutions of this utility model, and all such modifications or substitutions should be covered within the scope of the claims of this utility model.

Claims

1. A calender for artificial leather with adjustable width, characterized in that, include: A support (1) is provided, on which a fixed calendering roller (2) and an adjustable calendering roller (3) are mounted; An adjustable width cutting assembly includes two fixed blocks (7) fixed on a bracket (1) and two adjusting blocks (6) movably disposed above the fixed blocks (7). The adjusting blocks (6) and the fixed blocks (7) are rotatably connected to a rotating shaft (8) with a circular outer surface and a rectangular groove inside. The two horizontally opposite rectangular grooves are provided with a lockable rectangular rod (12). A movably disposed sleeve (14) is sleeved on the rotating shaft (8). The sleeve (14) is fixed to the rotating shaft (8) by fastening bolts and a cutter (13) is fixed on the sleeve (14).

2. The adjustable-width calender for artificial leather according to claim 1, characterized in that, in: A locking bolt is threaded onto the rotating shaft (8), and the locking bolt abuts against the rectangular rod (12).

3. The adjustable-width calender for artificial leather according to claim 1, characterized in that, in: Two adjusting blocks (6) are fixed with connecting plates (5) that slide against the bracket (1). An electric push rod (4) is installed on the bracket (1), and the output end of the electric push rod (4) is fixedly connected to the connecting plate (5).

4. A calender for adjustable-width artificial leather according to claim 1, characterized in that, in: It also includes a drive mechanism for driving the rotating shaft (8) to rotate. The drive mechanism includes a drive box (9) mounted on the same side adjustment block (6) and fixing block (7). The drive box (9) is provided with a meshing bevel gear (16). A short shaft (18) is fixed on the bevel gear (16). The short shaft (18) passes through the drive box (9) and is rotatably connected to it. The short shaft (18) is fixedly connected to the rotating shaft (8). A motor (10) is mounted on one of the drive boxes (9). A connecting shaft (17) is fixed at the output end of the motor (10). The connecting shaft (17) is fixedly connected to the bevel gear (16).

5. A calender for adjustable-width artificial leather according to claim 4, characterized in that, in: A drive tube (11) and a square rod (15) are fixed on two vertically distributed short shafts (18), respectively. The drive tube (11) is sleeved on the outside of the square rod (15) and is slidably arranged.

6. A calender for adjustable-width artificial leather according to claim 5, characterized in that, in: The inside of the drive tube (11) is square, and the outside of the drive tube (11) is circular.

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