A reciprocating slitting structure

Abstract

The utility model relates to a reciprocating slitting structure relates to ultrasonic machinery field. Including slitting knife, die head, transducer, ultrasonic generator and reciprocating mechanism, the slitting knife is located the top of die head, is equipped with slitting material between the slitting knife and die head, the transducer is vertically arranged, the top of transducer is connected die head, the bottom is connected with ultrasonic generator through connecting wire, the middle part of transducer is connected die head fixed plate, and the reciprocating mechanism includes bearing platform, and die head fixed plate reciprocating activity connects on bearing platform, the top of bearing platform is equipped with guide rail, the bottom of die head fixed plate is equipped with sliding block, and sliding block sliding connection is established on guide rail, the utility model discloses in the work, through increasing sliding block and guide rail under die head fixed plate, and increase kinetic energy device, make die head move to and fro, avoid appearing cutting groove, the utility model discloses convenient processing, and operation is reliable.

Description

Technical Field

[0001] This utility model relates to the field of ultrasonic mechanics, and in particular to a reciprocating slitting structure. Background Technology

[0002] Ribbons are smooth, lustrous, and flexible textile materials, typically made of silk, fabric, or synthetic fibers such as polyester. Due to their aesthetic and practical properties, ribbons are commonly used in clothing and decoration. Furthermore, ribbons have wide applications in packaging, handicrafts, RFID tags, and other fields.

[0003] Before use, ribbons need to be cut into different sizes according to the application scenario. During ordinary cutting, ribbons are prone to fraying or unraveling because they are woven or knitted from yarn (such as satin or ribbed ribbons) or made by directly bonding fibers (such as non-woven ribbons). During cutting, the yarns or fibers at the edges lose the constraint of the fabric structure, and individual fibers easily detach from the cut (especially smooth synthetic fibers such as polyester and nylon). The edges gradually loosen, forming a rough, "tassel-like" appearance.

[0004] Generally, high-temperature melting (ultrasonic or thermal cutting) is used to fuse and solidify the fiber ends, forming "weld points" to lock the edges. Thermal cutting involves a heated metal blade softening / melting the material through contact heat, while ultrasonic cutting uses ultrasonic vibrations to generate intense molecular friction at the contact point between the blade and the material. This energy is sufficient to instantly melt the cut edges of synthetic fibers (such as polyester, nylon, and ribbon). In contrast, thermal cutting consumes more energy due to continuous heating, carries a higher risk of burns, and is prone to carbonization of the fiber edges. It may also produce smoke and odors when cutting certain materials, and materials can easily stick and carbonize on the blade, especially multi-layered adhesive ribbons, requiring frequent cleaning and affecting the sealing effect. Conversely, ultrasonic cutting, with its core advantages of simultaneous cutting and sealing, superior quality, non-destructive material handling, and high efficiency and environmental friendliness, has become the benchmark technology for high-end, high-quality ribbon production.

[0005] Ultrasonic slitting mainly consists of five parts: a power system, an ultrasonic generator, a transducer, a die head, and a slitting blade; among them,

[0006] The power system mainly consists of a PLC / motion controller, a drive shaft, and a driven shaft, which provides feeding power for the ribbon material and adjusts the corresponding speed.

[0007] An ultrasonic generator is a device that converts 50 / 60Hz mains power into high-frequency (usually 15KHz-40kHz) electrical signals and outputs high-frequency sine wave electrical signals.

[0008] A transducer is a device that converts electrical energy into mechanical vibration energy (piezoelectric effect or magnetostrictive effect);

[0009] The die head is typically a carbide anvil, providing cutting reaction force;

[0010] The slitting blade is a hardened cutting tool that directly contacts the material and focuses ultrasonic vibration energy onto the cutting edge.

[0011] During the slitting process, ensure the ribbon is firmly attached to the die head, the slitting blade presses against the ribbon cutting position, and pressure is applied. First, turn on the ultrasonic generator and allow its frequency to stabilize to the set frequency. Then, turn on the power control system to pull the ribbon for feeding and slitting.

[0012] Because the energy of the ultrasound is focused on the contact point between the blade and the die head, and a certain pressure needs to be applied, the slitting blade must remain stationary during operation to ensure the slitting and sealing effect and to avoid fluctuations in the roundness and levelness of the blade.

[0013] like Figure 4-5 As shown, due to prolonged high-frequency vibration, the blade edge may wear or the die head surface may develop grooves 12. In this case, the blade needs to be rotated at an angle to use the unworn part. At the same time, the die head position should be manually fine-tuned to continue operation using the part without grooves.

[0014] The above method works fine when slitting ordinary ribbons, but its limitations become apparent when slitting coated materials such as TPU (thermoplastic polyurethane) or multi-layered adhesive ribbons. When the die head has no grooves, the slitting and edge-sealing effects are normal. However, when grooves are present, the contact area between the blade and the platform increases (the area of ​​the ribbon being fused increases), leading to poor energy uniformity. The ribbon itself or parts of the coating may carbonize due to localized high temperatures, resulting in a black, dirt-like appearance on the ribbon edges. When this edge-sealing effect is rolled up, the dirt on the sides becomes more noticeable, severely impacting product quality.

[0015] When dealing with edge sealing abnormalities caused by mold wear during the slitting process, increasing the hardness of the cutting tool or die head can alleviate the problem. However, the issue will still occur after prolonged wear.

[0016] Because the blade applies pressure to the die head, the pressure needs to be released when manually rotating the blade or fine-tuning the die head. Otherwise, the hard friction will cause the blade to chip or deform, affecting the slitting and sealing effect. Utility Model Content

[0017] To address the above problems, this utility model provides a simple reciprocating slitting structure that improves product quality.

[0018] The technical solution of this utility model is: a reciprocating slitting structure, including a slitting blade, a die head, a transducer, an ultrasonic generator, and a reciprocating mechanism.

[0019] The slitting blade is located above the die head, and the slitting material is disposed between the slitting blade and the die head;

[0020] The transducer is vertically arranged, with the top of the transducer connected to the mold head and the bottom connected to the ultrasonic generator via a connecting line;

[0021] The transducer is connected to a mold head fixing plate in the middle.

[0022] The reciprocating mechanism includes a support platform, and the die head fixing plate is reciprocally connected to the support platform.

[0023] The top of the support platform is provided with a guide rail, and the bottom of the mold head fixing plate is provided with a slider, which is slidably connected to the guide rail.

[0024] It also includes a kinetic energy device, which is mounted on a support platform and is used to drive the die head fixing plate to reciprocate linear motion.

[0025] The kinetic energy device is a cylinder or a linear actuator.

[0026] The support platform is provided with a sliding hole, and the transducer is located inside the sliding hole.

[0027] The die head is a titanium die tool head.

[0028] In operation, this invention adds a slider and guide rail under the die head fixing plate, and adds a kinetic energy device to make the die head move back and forth, thus avoiding the formation of grooves.

[0029] This invention is easy to process and reliable to operate. Attached Figure Description

[0030] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the accompanying drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. In the drawings, the parts are not necessarily drawn to scale.

[0031] Figure 1 This is a structural schematic diagram of the present invention.

[0032] Figure 2 This is a schematic diagram of the slitting structure in this utility model.

[0033] Figure 3 yes Figure 2 Top view,

[0034] Figure 4 This is a schematic diagram of the slitting structure in the existing technology.

[0035] Figure 5 This is a schematic diagram of the slitting blade forming the cutting groove;

[0036] In the diagram, 1 represents the machine wall, and 2 represents the main drive assembly.

[0037] 3 is a reciprocating slitting structure, 31 is a slitting blade, 32 is a die head, 33 is a transducer, 34 is an ultrasonic generator, 35 is a die head fixing plate, and 36 is a slitting blade assembly.

[0038] 4 is the transmission component, 5 is the ribbon, 6 is the bearing platform, 7 is the guide rail, 8 is the slider, 9 is the kinetic energy device, 10 is the triangular support plate, 11 is the waste edge, and 12 is the grooving. Detailed Implementation

[0039] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0040] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "vertical," "horizontal," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0041] In the description of this utility model, it should be noted that, 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 based on the specific circumstances.

[0042] This utility model is as follows Figure 1-3 As shown, a reciprocating slitting structure includes a slitting blade 31, a die head 32, a transducer 33, an ultrasonic generator 34, and a reciprocating mechanism.

[0043] In the application, it also includes a machine wall 1, on one side of which a main drive assembly 2, a reciprocating slitting structure 3 and a driven assembly 4 are arranged in sequence, and the main drive assembly and the driven assembly are used to transmit the ribbon 5. Figure 1 The middle arrow indicates the direction of the ribbon's movement;

[0044] The slitting blade 31 is located above the die head 3; a slitting material (such as ribbon 5) is provided between the slitting blade and the die head.

[0045] The transducer 33 is vertically arranged, with the top of the transducer 33 connected to the mold head 32 and the bottom connected to the ultrasonic generator 34 via a connecting line; the mold head 32 is located below the ribbon 5.

[0046] The transducer is connected to a mold head fixing plate 35 in the middle.

[0047] The reciprocating mechanism includes a support platform 6, which is horizontally mounted on the machine wall 1.

[0048] The die head fixing plate 35 is reciprocally connected to the support platform 6 on the same plane, and the direction of movement of the die head fixing plate is perpendicular to the direction of movement of the ribbon. Figure 2 , 3 The middle arrow indicates the direction of the mold head movement. Figure 3 The elliptical region is the cutting area formed by the movement of the die head. This is avoided by moving the die head. Figure 4 A single cutting area is formed to create a groove.

[0049] In operation, the mold head (titanium mold tool head) is connected to a transducer, which is mounted on a mold head fixing plate. The mold head fixing plate is mounted on a guide rail via a slider, and the guide rail is fixed to a support platform. Simultaneously, a kinetic energy device is also mounted on the support platform, and its output end is connected to the mold head fixing plate. The support platform is fixed to the machine wall and reinforced with a triangular support plate. The transducer is connected to an ultrasonic generator via a connecting cable.

[0050] The machine wall is equipped with a main drive assembly and a driven drive assembly. The ribbon-like material is threaded between the main drive assembly and the driven drive assembly and is tightly attached to the die head. The slitting knife device is fixed on the machine wall and can drive the slitting knife to press down on the die head. The waste edges 11 of the slitting ribbon are treated by blow-drying or winding.

[0051] The operation of the main drive assembly and the driven drive assembly is a conventional technical means. The main drive assembly and the driven drive assembly each include a pair of rollers that move in opposite directions. For example, the operation of any roller in the main drive assembly is driven by a motor.

[0052] The quality of the cut ribbon end face after slitting using this invention is reliable, and the die head can be used for a long time.

[0053] The top of the support platform is provided with a guide rail 7, and the bottom of the mold head fixing plate is provided with a slider 8, which is slidably connected to the guide rail.

[0054] The slider and guide rail configuration ensures reliable sliding.

[0055] It also includes a kinetic energy device 9, which is mounted on the support platform 6 and is used to drive the die head fixing plate to reciprocate linear motion.

[0056] A kinetic energy device is installed to facilitate the movement of the die head fixing plate. The movement of the die head fixing plate, in turn, drives the movement of the die head.

[0057] The die head reciprocates perpendicular to the conveyor belt direction, and the speed and amplitude of the reciprocation can be adjusted. The speed is within 1 m / min, and the amplitude of the reciprocation is within 50 mm.

[0058] The kinetic energy device 9 is a cylinder or a linear actuator.

[0059] The settings can be selected according to the actual processing requirements.

[0060] The support platform is provided with a sliding hole (not shown in the figure), and the transducer is located inside the sliding hole.

[0061] A sliding hole is provided to allow space for the transducer to move, ensuring reliable operation.

[0062] It also includes a triangular support plate 10, which is connected between the load-bearing platform and the machine wall.

[0063] Install triangular support plates to improve stability.

[0064] The mold head 32 is a titanium mold tool head.

[0065] The titanium mold tool head is designed to increase hardness, thereby extending its service life.

[0066] The slitting blade is connected to the machine wall via a slitting blade device 36, which is a cylinder or a linear actuator.

[0067] The slitting blade is raised and lowered by a slitting blade device. The slitting blade applies pressure to the die head. The pressure is not limited to pneumatic methods and can be controlled within 0.6 MPa or 60 bar.

[0068] The slitting blade must not rotate during the slitting process.

[0069] This invention can process ribbons with a low melting point (80-120 degrees) coating or ribbon materials with a low melting point (100-200 degrees).

[0070] In practical applications, the slitting method of this utility model includes the following steps:

[0071] S1. Turn on the ultrasonic generator and wait for the ultrasonic frequency to stabilize;

[0072] S2. Start the kinetic energy device, and the die head swings back and forth in the vertical direction of the belt conveyor.

[0073] S3. Delay for 5 seconds and wait for the swing to stabilize;

[0074] S4. Start the main drive assembly belt movement;

[0075] S5. Continuous cutting, with the die head continuously oscillating;

[0076] S6. Stop conveyor belt movement;

[0077] S7. The die head stops oscillating;

[0078] S8. Delay for 3 seconds, wait for the swing to stop;

[0079] S9. Turn off the ultrasonic generator.

[0080] In operation, the slitting blade and the die head should not rub against each other. The reciprocating motion of the die head should be started first after the frequency of the ultrasonic generator has stabilized, and a corresponding delay should be made to ensure that the reciprocating operation is stable before the belt slitting is carried out.

[0081] Similarly, at the end of the cutting process, to avoid hard friction, the reciprocating motion needs to be turned off first, and the ultrasonic generator can only be turned off after the reciprocating motion stops.

[0082] In application, considering that there is always mechanical vibration between the slitting blade and the die head during the slitting process, if the die head is moved during this process, no direct hard friction will be generated. Therefore, this utility model can prevent the die head from having grooves by means of the reciprocating motion of the die head.

[0083] This utility model has the following advantages:

[0084] 1) It breaks away from the conventional thinking and method of fixing the slitting blade and the die head in ultrasonic ribbon slitting, and adopts the reciprocating motion of the die head to solve the carbonization phenomenon caused by uneven fusion due to wear;

[0085] 2) Traditional methods produce a large number of grooves (i.e., pits) on the die head, while the new method does not produce pits on the die head, which greatly reduces the wear and rework frequency of the die head.

[0086] 3) Even after long-term reciprocating motion, the die head can still be used by reducing the amplitude of reciprocating motion.

[0087] Regarding the information disclosed in this case, the following points need to be clarified:

[0088] (1) The accompanying drawings of the embodiments disclosed in this case only involve the structures involved in the embodiments disclosed in this case. Other structures can refer to the general design.

[0089] (2) Where there is no conflict, the embodiments and features disclosed in this case can be combined with each other to obtain new embodiments;

[0090] The above are merely specific embodiments disclosed in this case, but the scope of protection of this disclosure is not limited thereto. The scope of protection disclosed in this case shall be determined by the scope of protection of the claims.

Claims

1. A reciprocating slitting structure characterized by, Includes slitting blade, die head, transducer, ultrasonic generator, and reciprocating mechanism. The slitting blade is located above the die head, and the slitting material is disposed between the slitting blade and the die head; The transducer is vertically arranged, with the top of the transducer connected to the mold head and the bottom connected to the ultrasonic generator via a connecting line; The transducer is connected to a mold head fixing plate in the middle. The reciprocating mechanism includes a support platform, and the die head fixing plate is reciprocally connected to the support platform.

2. A reciprocating slitting structure according to claim 1, wherein The top of the support platform is provided with a guide rail, and the bottom of the mold head fixing plate is provided with a slider, which is slidably connected to the guide rail.

3. A reciprocating slitting structure according to claim 2, wherein It also includes a kinetic energy device, which is mounted on a support platform and is used to drive the die head fixing plate to reciprocate linear motion.

4. A reciprocating slitting structure according to claim 3, wherein The kinetic energy device is a cylinder or a linear actuator.

5. The reciprocating slitting structure of claim 1, wherein The support platform is provided with a sliding hole, and the transducer is located inside the sliding hole.

6. A reciprocating slitting structure according to claim 1 wherein, The die head is a titanium die tool head.

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