A low resistance ITO film slitting apparatus

Abstract

The utility model provides a kind of low-resistance ITO film slitting equipment, including round knife group, and one side of round knife group is provided with mounting rod, at least one group of slitting assembly is provided on the outside wall of mounting rod, for the secondary cutting of uncut film material, slitting assembly includes fixed plate slidingly connected on mounting rod, and one end of fixed plate is rotatably connected with transmission rod, and one end of transmission rod is provided with slitting knife, the cutting edge of each slitting knife is coaxially arranged with the cutting edge of each corresponding round knife, to ensure that the cutting position of uncut film material and slitting knife cutting position are completely coincident, the utility model is equipped with slitting assembly on one side of round knife group, and the cutting edge of slitting knife and corresponding round knife is coaxial, can be aimed at round knife blade wear, tension anomaly leads to uncut film material to carry out accurate secondary cutting, ensure that cutting position coincides, avoid tearing film material when winding due to tension accumulation, solve quality problem, improve yield, reduce cost.

Description

Technical Field

[0001] This utility model relates to the field of ITO film slitting technology, specifically to a low-resistivity ITO film slitting device. Background Technology

[0002] The slitting of ITO film (indium tin oxide transparent conductive film) is a key process for cutting large rolls of ITO film into smaller finished products according to specific specifications. It is widely used in touch screens, liquid crystal displays, flexible electronics and other fields.

[0003] In existing technologies, ITO films are generally slit using mechanical slitting devices, which involve cutting the film material with one or more circular blades and then winding it up using a tension control system at the unwinding end and a winding mechanism. This reduces costs, increases efficiency, and is suitable for slitting large quantities of regular shapes.

[0004] However, when cutting with a circular cutter, the blade may wear down due to long-term high-speed cutting (such as localized chipping or nicks), or the magnetic powder clutch at the unwinding end may experience abnormal torque output (such as overload slippage or magnetic attenuation), resulting in uncut sections. During the winding process, the uncut film material may tear due to accumulated tension, causing defects such as wrinkles and edge damage in the finished product. It may also lead to quality problems such as circuit breaks and uneven display in subsequent processes such as lamination and printing, resulting in a decrease in product yield and an increase in rework costs. Utility Model Content

[0005] In view of this, the present invention provides a low-resistance ITO film slitting device, which can provide a slitting component on one side of the circular blade assembly, with the slitting blade and the corresponding circular blade blade being coaxial. This allows for precise secondary cutting of uncut film material caused by wear of the circular blade edge or abnormal tension, ensuring that the cutting positions coincide, avoiding tearing of the film material due to accumulated tension during winding, solving quality problems, improving yield, and reducing costs.

[0006] To solve the above-mentioned technical problems, this utility model provides a low-resistivity ITO film slitting device, including a slitting machine body, a circular blade assembly on the slitting machine body, an mounting rod on the side of the circular blade assembly near the winding mechanism, the mounting rod can be mounted on one side of the circular blade assembly through a support frame, and at least one set of slitting components on the outer wall of the mounting rod for secondary cutting of the uncut film material.

[0007] The slitting assembly includes a fixed plate that is slidably connected to a mounting rod. A transmission rod is laterally inserted into one end of the fixed plate. The transmission rod is rotatably connected to the end of the fixed plate away from the mounting rod via a bearing. A slitting blade is provided at one end of the transmission rod.

[0008] The blade of each slitting blade is coaxially arranged with the blade of each corresponding circular blade (i.e., the center planes of the circular cross-sections of the slitting blade and the circular blade are on the same plane) to ensure that the uncutting position coincides completely with the cutting position of the slitting blade.

[0009] A drive motor is mounted on the vertical surface of the fixed plate away from the slitting blade. The drive motor is bolted to the vertical surface of the fixed plate. The output shaft of the drive motor is connected to one end of the transmission rod via a coupling to drive the slitting blade to rotate.

[0010] A blocking disc is fixedly connected to the outer wall of one end of the transmission rod, and a fixed post is fixedly connected to the end of the transmission rod near the blocking disc. The fixed post is a polygonal structure, and the slitting blade has a snap-fit ​​hole that matches the fixed post. The slitting blade is installed on the outer wall of the fixed post through the snap-fit ​​hole.

[0011] A limiting element is provided at the end of the fixed column away from the blocking plate to limit the position of the slitting blade along the axial direction of the fixed column and prevent the slitting blade from falling off during high-speed rotation.

[0012] The limiting component includes a threaded rod fixedly connected to one end of a fixed post. A limiting cylinder is threadedly connected to the threaded rod. By rotating the limiting cylinder, it moves axially along the threaded rod and abuts against the end face of the slitting blade, thereby achieving axial limiting of the slitting blade.

[0013] The fixing plate is slidably connected to the outer wall of the mounting rod through the mounting hole. A mounting cylinder is installed in the mounting hole. An adjusting cylinder is coaxially fixed to one end of the mounting cylinder. A fastening rod is threadedly connected to the adjusting cylinder. The fastening rod has threads on its outer wall. The fastening rod passes through the adjusting cylinder and is threadedly connected to the adjusting cylinder. A knob is fixedly connected to the end of the fastening rod away from the adjusting cylinder. By rotating the fastening rod, the adjusting cylinder can be detachably fixed in a suitable position on the mounting rod to adapt to the position requirements of different cutting conditions.

[0014] The mounting cylinder is rotatably connected to the mounting hole via a bearing. A torsion spring is fitted on the outer wall of the mounting cylinder. One end of the torsion spring is inserted into a hole on the vertical surface of the adjusting cylinder facing the fixed plate, and the other end of the torsion spring is inserted into a hole on one side of the fixed plate. This is used to adaptively adjust according to the thickness of the membrane material to ensure that the blade of the slitting knife maintains a reasonable contact pressure with the surface of the membrane material.

[0015] A limiting ring is fixedly connected to the end of the mounting cylinder away from the adjusting cylinder. A washer is sleeved between the limiting ring and the fixing plate. That is, the washer is sleeved on the outer wall of the end of the mounting cylinder that extends out of the fixing plate. This is used to reduce the wear caused by rotation between the mounting cylinder and the fixing plate and extend the service life.

[0016] The beneficial effects of the above-mentioned technical solution of this utility model are as follows:

[0017] 1. Secondary cutting ensures cutting integrity and improves product yield: A slitting component is set on one side of the circular blade assembly. By setting the slitting blade and the corresponding circular blade edge coaxially, the film material that was not cut due to wear of the circular blade edge or abnormal tension during the first cut can be accurately cut again. This ensures that the cutting position is completely overlapped, effectively avoiding tearing of the uncut film material due to accumulated tension during winding. This solves the quality problems such as wrinkles, edge damage, circuit breaks, and uneven display in subsequent processes from the root, significantly improving the product yield and reducing rework costs.

[0018] 2. Fixed post and limiting structure to ensure stable and reliable slitting: The polygonal fixed post (such as a quadrilateral) at the end of the transmission rod is adapted to the slitting knife locking hole, which can efficiently transmit the torque of the drive motor and prevent the slitting knife from slipping when rotating at high speed. With the limit cylinder connected to the blocking plate and the threaded rod, the axial limit of the slitting knife is realized by thread adjustment to prevent it from falling off during high-speed operation. This ensures the stability of the slitting knife installation and supports quick disassembly and assembly, which is convenient for equipment maintenance and knife replacement.

[0019] 3. Rotary slitting blade improves cutting efficiency and process smoothness: The drive motor on the fixed plate directly drives the transmission rod and slitting blade to rotate through the coupling, so that the slitting blade performs secondary cutting on the membrane material at a speed matching the circular blade, which significantly improves cutting efficiency. At the same time, the rotating slitting blade can avoid obstructing the membrane material conveying, reduce the damage to the membrane material surface caused by friction, and ensure the smoothness of the slitting process.

[0020] 4. Sliding adjustment and adaptive pressure adjustment to adapt to diverse working conditions: The fixed plate, through the combination structure of the mounting cylinder, adjusting cylinder and fastening rod, can slide along the mounting rod and be fixed in any position, flexibly adapting to the position changes of the circular blade assembly under different slitting conditions, ensuring that the slitting blade and the circular blade are always accurately aligned. The torsion spring on the outside of the mounting cylinder can automatically adjust the contact pressure between the slitting blade and the surface of the membrane according to the thickness of the membrane: when the membrane is thicker, the deformation of the torsion spring increases to provide greater pressure, and when it is thinner, the pressure automatically decreases. Without manual intervention, it can avoid problems such as incomplete cutting or membrane damage caused by improper pressure, significantly improving the adaptability of the equipment to working conditions.

[0021] 5. Wear-resistant design extends equipment lifespan: A washer is placed between the limit ring and the fixed plate. This, combined with the axial positioning of the bearing by the limit ring, effectively reduces wear during relative rotation, improves the rotational stability of the mounting cylinder, reduces wear on the limit ring and fixed plate, extends the overall lifespan of the slitting assembly, reduces maintenance costs and downtime frequency, and ensures long-term stable operation of the equipment. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2This is a schematic diagram of the slitting component structure of this utility model;

[0024] Figure 3 This is a schematic diagram of the other side of the slitting component structure of this utility model;

[0025] Figure 4 This is a schematic diagram of the fixing plate and its components of the present invention.

[0026] In the diagram: 101, circular blade assembly; 102, mounting rod; 103, fixing plate; 104, slitting blade;

[0027] 201. Blocking plate; 202. Fixing post;

[0028] 301. Threaded rod; 302. Limiting sleeve;

[0029] 401. Drive motor;

[0030] 501. Mounting cylinder; 502. Adjusting cylinder; 503. Fastening rod; 504. Knob;

[0031] 601. Torsion spring;

[0032] 701, Limiting ring; 702, Washer. Detailed Implementation

[0033] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the following will be described in conjunction with the accompanying drawings of the embodiments of this utility model. Figure 1-4 The technical solutions of the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the described embodiments of this utility model are within the protection scope of this utility model.

[0034] A low-resistivity ITO film slitting device, such as Figure 1 As shown: The slitting machine includes a slitting machine body, which includes a circular blade assembly 101 for the initial slitting of the ITO film. A mounting rod 102 is provided on the side of the circular blade assembly 101 near the winding mechanism. The mounting rod 102 can be mounted on one side of the circular blade assembly 101 via a support frame. At least one set of slitting components is provided on the outer wall of the mounting rod 102. In this embodiment, each set of slitting components is provided in correspondence with each circular blade for secondary cutting of the uncut film material.

[0035] like Figure 1 , 2As shown: The slitting assembly includes a fixed plate 103 that is slidably connected to the mounting rod 102 (i.e., the fixed plate 103 can be directly slidably connected to the mounting rod 102, but without limit, the fixed plate 103 is prone to skewing). A transmission rod is transversely inserted at one end of the fixed plate 103. The transmission rod is rotatably connected to the end of the fixed plate 103 away from the mounting rod 102 through a bearing. A slitting blade 104 is provided at one end of the transmission rod (i.e., the slitting blade 104 is fixedly connected to the outer wall of the transmission rod).

[0036] The blade of each slitting blade 104 is coaxially arranged with the blade of each corresponding circular blade (i.e., the center plane of the circular cross-section of the slitting blade 104 and the circular blade is on the same plane), to ensure that the uncut position is completely coincident with the cutting position of the slitting blade 104, thereby improving the accuracy of membrane cutting and avoiding membrane damage caused by cutting deviation.

[0037] Furthermore, a blocking disc 201 is fixedly connected to the outer wall of one end of the transmission rod, and a fixing post 202 is fixedly connected to the end of the transmission rod near the blocking disc 201. The fixing post 202 is used to fix and limit the slitting blade 104. The fixing post 202 is set as a polygonal structure. The slitting blade 104 is provided with a snap-fit ​​hole that matches the fixing post 202. The slitting blade 104 is installed on the outer wall of the fixing post 202 through the snap-fit ​​hole.

[0038] In this embodiment, the fixing post 202 is configured as a quadrilateral structure, and the locking hole of the slitting blade 104 is adapted to it, which can efficiently transmit torque and prevent the slitting blade 104 from slipping when rotating at high speed. The slitting blade 104 is supported by the blocking plate 201 in conjunction with the fixing post 202, which can facilitate the quick assembly and disassembly of the slitting blade 104. Furthermore, the slitting blade 104 is in contact with the blocking plate 201, and the blocking plate 201 rotates with the transmission rod. When limiting and blocking one side of the slitting blade 104, the slitting blade 104 will not be stuck.

[0039] like Figure 2 , 4 As shown: A limiting element is provided at the end of the fixed column 202 away from the blocking plate 201 to limit the position of the slitting blade 104 along the axial direction of the fixed column 202 and prevent the slitting blade 104 from falling off during high-speed rotation.

[0040] Furthermore, the limiting component includes a threaded rod 301 fixedly connected to one end of the fixed post 202. A limiting cylinder 302 is connected to the threaded rod 301 through a threaded engagement. By rotating the limiting cylinder 302, it can be moved axially along the threaded rod 301 and abut against the end face of the slitting blade 104, thereby achieving axial limiting of the slitting blade 104.

[0041] The limiting cylinder 302 can limit the slitting blade 104, and together with the fixing column 202 and the blocking plate 201, it can limit and fix the slitting blade 104 while preventing it from jamming when rotating.

[0042] like Figure 3 , 4 As shown: A drive motor 401 is provided on the vertical surface of the fixed plate 103 away from the slitting blade 104. The drive motor 401 is connected to the vertical surface of the fixed plate 103 by bolts. The output shaft of the drive motor 401 is connected to one end of the transmission rod by a coupling, and is used to drive the slitting blade 104 to rotate.

[0043] The rotation of the output shaft of the drive motor 401 can drive the transmission rod to rotate, thereby causing the transmission rod to drive the blocking disc 201, the fixed column 202, the threaded rod 301 and the limiting cylinder 302 to rotate synchronously, which in turn can drive the slitting blade 104 to rotate. Therefore, the speed of secondary cutting of the film material can be increased, and the rotation of the slitting blade 104 can also prevent obstruction of uncut film material.

[0044] like Figure 3 , 4 As shown: The fixing plate 103 is slidably connected to the outer wall of the mounting rod 102 through the mounting hole. The mounting hole is provided with a mounting cylinder 501. The inner diameter of the mounting cylinder 501 is adapted to the mounting rod 102. The fixing plate 103 is slidably connected to the outer wall of the mounting rod 102 through the mounting cylinder 501. One end of the mounting cylinder 501 is coaxially fixedly connected to an adjusting cylinder 502. The adjusting cylinder 502 is connected to a fastening rod 503 through a threaded connection. The outer wall of the fastening rod 503 is threaded (i.e., the fastening rod 503 is set as a threaded rod 301). By rotating the fastening rod 503, the adjusting cylinder 502 can be detachably fixed in a suitable position on the mounting rod 102 to adapt to the position requirements of different cutting conditions.

[0045] When the position of the circular blade assembly 101 needs to be adjusted to cut film materials of different sizes, the position of the mounting cylinder 501 can be adjusted to achieve the purpose of adjusting the position of the slitting blade 104, so that the slitting blade 104 can also be adjusted to correspond to the circular blade. The end of the fastening rod 503 away from the adjusting cylinder 502 is fixedly connected to the knob 504, which can be manually adjusted to increase the friction and improve the adjustment speed.

[0046] like Figure 2 , 3As shown in Figure 4: Further, the mounting cylinder 501 is rotatably connected to the mounting hole via a bearing, allowing the mounting cylinder 501 to rotate within the mounting hole for rotational adjustment. A torsion spring 601 is sleeved on the outer wall of the mounting cylinder 501. One end of the torsion spring 601 is inserted into a hole on the vertical surface of the adjusting cylinder 502 facing the fixing plate 103, and the other end of the torsion spring 601 is inserted into a hole on the vertical surface of the fixing plate 103. This is used for adaptive adjustment according to the thickness of the film material to ensure that the blade of the slitting knife 104 maintains a reasonable contact pressure with the surface of the film material.

[0047] When the thickness of the membrane material changes, the squeezing force generated when the slitting blade 104 contacts the membrane material will cause the fixing plate 103 to rotate relative to the mounting cylinder 501, causing the torsion spring 601 to undergo elastic deformation. The elastic restoring force of the torsion spring 601 will push the fixing plate 103 to maintain the contact pressure on the membrane material. When the thickness is large, the deformation of the torsion spring 601 increases, providing greater pressure. When the thickness is small, the deformation of the torsion spring 601 decreases, and the pressure decreases accordingly. Therefore, no manual intervention is required, which can ensure that the slitting blade 104 always adheres to the surface of the membrane material with reasonable pressure, avoiding incomplete cutting due to insufficient pressure or damage to the membrane material due to excessive pressure.

[0048] like Figure 3 As shown: A limiting ring 701 is fixedly connected to the end of the mounting cylinder 501 away from the adjusting cylinder 502. The limiting ring 701 can prevent the bearing from falling off to one side due to frequent rotation of the mounting cylinder 501, thereby improving the stability of the rotation of the mounting cylinder 501 and its components. A washer 702 is sleeved between the limiting ring 701 and the fixing plate 103. That is, the washer 702 is sleeved on the outer wall of the end of the mounting cylinder 501 that extends out of the fixing plate 103, in order to reduce the wear caused by rotation between the mounting cylinder 501 and the fixing plate 103 and extend the service life.

[0049] In use, mounting rods 102 are installed on the side of the circular blade assembly 101 near the winding mechanism via a support frame to ensure that the mounting rods 102 are parallel to the blade plane of the circular blade assembly 101 and the spacing is adjustable (determined according to the film material conveying path). Each group of cutting components corresponds to one circular blade, which is evenly arranged along the outer wall of the mounting rods 102.

[0050] Align the snap-fit ​​hole of the slitting blade 104 with the polygonal fixing post 202 (such as a quadrilateral) at the end of the transmission rod, and push it in along the axial direction of the fixing post 202 so that the inner end face of the slitting blade 104 fits against the blocking disc 201.

[0051] Rotate the limiting cylinder 302 (so that it is connected to the threaded rod 301 at the end of the fixed column 202 by a thread) until the end face of the limiting cylinder 302 abuts against the outer end face of the slitting blade 104, and fix the slitting blade 104 axially by thread engagement to prevent it from falling off during high-speed rotation;

[0052] According to the cutting position of the circular blade assembly 101, the sliding fixing plate 103 moves the mounting cylinder 501 along the mounting rod 102, adjusting it so that the cutting edge of the slitting blade 104 is coaxial with the corresponding circular blade (i.e., the center plane of their circular cross-sections coincides). The fastening rod 503 (threaded to the adjusting cylinder 502) is rotated, and the mounting cylinder 501 is fixed at the target position of the mounting rod 102 through the adjusting cylinder 502, ensuring that the cutting position of the slitting blade 104 and the circular blade are completely aligned. Then, the secondary slitting process of the membrane material can begin.

[0053] Furthermore, it should be noted that, in the description of this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0054] The above description is the preferred embodiment of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

Claims

1. A low-resistivity ITO film slitting device, comprising a circular blade assembly (101), wherein a mounting rod (102) is provided on one side of the circular blade assembly (101), characterized in that: At least one set of cutting components is provided on the outer wall of the mounting rod (102) for secondary cutting of the uncut membrane material; The slitting assembly includes a fixing plate (103) slidably connected to the mounting rod (102), a transmission rod rotatably connected to one end of the fixing plate (103), and a slitting blade (104) provided at one end of the transmission rod; The blade of each slitting blade (104) is coaxially arranged with the blade of each corresponding circular blade to ensure that the cutting position of the uncut film material completely coincides with the cutting position of the slitting blade (104).

2. The low-resistivity ITO film slitting equipment as described in claim 1, characterized in that: A blocking disc (201) is fixedly connected to the outer wall of one end of the transmission rod. A fixing post (202) is provided at the end of the transmission rod near the blocking disc (201). The fixing post (202) is configured as a polygonal structure. The cutting blade (104) is snapped onto the outer wall of the fixing post (202). The fixed column (202) is provided with a limiting element at the end away from the blocking plate (201) to limit the displacement of the slitting blade (104) along the axial direction of the fixed column (202) and prevent the slitting blade (104) from falling off during high-speed rotation.

3. The low-resistivity ITO film slitting equipment as described in claim 2, characterized in that: The limiting component includes a threaded rod (301) disposed at one end of the fixed column (202). A limiting cylinder (302) is threadedly connected to the threaded rod (301). By rotating the limiting cylinder (302), it moves axially along the threaded rod (301) and abuts against the end face of the slitting blade (104) to achieve axial limiting of the slitting blade (104).

4. The low-resistivity ITO film slitting equipment as described in claim 1, characterized in that: A drive motor (401) is provided on the vertical surface of the fixed plate (103) away from the slitting blade (104). The output shaft of the drive motor (401) is connected to one end of the transmission rod to drive the slitting blade (104) to rotate.

5. The low-resistivity ITO film slitting equipment as described in claim 4, characterized in that: The fixing plate (103) is slidably connected to the mounting rod (102) through the mounting hole. The mounting hole is provided with a mounting cylinder (501). One end of the mounting cylinder (501) is coaxially fixedly connected to an adjusting cylinder (502). The adjusting cylinder (502) is connected to a fastening rod (503) by a threaded connection. By rotating the fastening rod (503), the adjusting cylinder (502) can be fixed in a suitable position on the mounting rod (102) to adapt to the position requirements of different cutting conditions.

6. The low-resistivity ITO film slitting equipment as described in claim 5, characterized in that: The mounting cylinder (501) is rotatably connected in the mounting hole. A torsion spring (601) is provided on the outer wall of the mounting cylinder (501). One end of the torsion spring (601) is connected to the vertical surface of the adjusting cylinder (502) facing the fixing plate (103), and the other end of the torsion spring (601) is connected to the side surface of the fixing plate (103) for adaptive adjustment according to the thickness of the membrane material.

7. The low-resistivity ITO film slitting equipment as described in claim 6, characterized in that: A limiting ring (701) is provided at the end of the mounting cylinder (501) away from the adjusting cylinder (502). A washer (702) is sleeved between the limiting ring (701) and the fixing plate (103) to reduce wear caused by rotation between the mounting cylinder (501) and the fixing plate (103) and extend service life.

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