Melt-blowing die head of melt-blowing machine

Abstract

The melt-blowing die head of the melt-blowing machine comprises a base, a containing groove is formed in the bottom of the base, a spinning nozzle is clamped in the containing groove, a mounting groove is formed in the lower surface of the containing groove, a pressing plate is clamped in the mounting groove, and the pressing plate is connected with the spinning nozzle in a clamped mode. A material conveying channel is formed in the middle of the base, a connecting mechanism is arranged between the pressing plate and the base, a spinning channel is formed in the spinning nozzle, and a cavity is formed in the upper side of the spinning channel. The sliding grooves and the clamping strips are arranged on the two sides of the mounting groove and matched with the clamping grooves in the two sides of the pressing plate, and the clamping strips are stably clamped through cooperation with the elastic force of the springs. During installation, a tool is not needed, connection of the pressing plate and the base can be completed only by pushing the clamping strip, and then the spinning nozzle is fixed. And the dismounting operation is also simple. Compared with a traditional bolt fixing mode, the mounting and dismounting processes are greatly simplified, the time cost is saved, the working efficiency is remarkably improved, and single-person operation is facilitated.

Description

Technical Field

[0001] This utility model relates to the field of meltblown machines, and more specifically, to a meltblown die head for a meltblown machine. Background Technology

[0002] Driven by demand in fields such as medical and health care and air filtration, the importance of meltblown nonwoven fabric has become increasingly prominent. Meltblown machines are key production equipment, and meltblown dies, as their core components, have a significant impact on the quality and production efficiency of meltblown nonwoven fabric. However, existing meltblown dies suffer from problems such as unreasonable structural design leading to uneven fiber distribution, uneven thermal field affecting tensile performance, low processing precision and easy wear, and limited adjustment and control, making it difficult to meet diverse needs. Therefore, the development of new meltblown dies is of great significance.

[0003] The prior art disclosed in patent publication (announcement) number CN213835648U is a meltblown die head for a meltblown machine, including a base, a spinneret, and a pressure plate. Mounting plates are provided on both sides of the base, and fixed suction cups are provided on the mounting plates. A connection port is provided in the middle of the base, and a material conveying channel is provided inside the base. The spinneret is provided at one end of the material conveying channel, and a fixing bolt is provided on the spinneret. A cavity is provided inside the spinneret, and a spinneret channel is provided below the cavity. The pressure plate is provided below the spinneret, and a second fixing bolt is provided on the pressure plate. A hot air channel is provided between the spinneret and the pressure plate. Heating blocks are provided on both sides of the pressure plate, and a mounting groove is provided on one side of each heating block.

[0004] The aforementioned patent document discloses a meltblown die head for a meltblown machine. While this solves the problem that the meltblown die head is too heavy to be installed by a single person, requiring multiple people to install it, thus making it inconvenient to use and reducing installation efficiency, its shortcomings are as follows:

[0005] In the above solutions, fixing bolts one and two are used to fix the spinneret and the pressure plate. During installation and disassembly, tools are needed to tighten or loosen the bolts, which is a relatively complicated operation, increases the time cost of installation and disassembly, and reduces work efficiency. In addition, the melt may contain impurities. If it is not filtered, the impurities may block the spinneret channel, resulting in uneven spinnereting and affecting the quality of meltblown fabric.

[0006] Therefore, we have made improvements to this and proposed a meltblown die head for a meltblown machine. Utility Model Content

[0007] To address the shortcomings of existing technologies, this utility model provides a meltblown die head for a meltblown machine, which solves the problems mentioned in the background art.

[0008] To achieve the above-mentioned objectives, this utility model provides the following technical solution:

[0009] The meltblown die head of the meltblown machine is designed to solve the above problems.

[0010] The application is as follows:

[0011] The device includes a base, a placement groove at the bottom of the base, a spinneret engaged inside the placement groove, an installation groove on the lower surface of the placement groove, a pressure plate engaged inside the installation groove, and the pressure plate and the spinneret engaged in a snap-fit ​​connection. A material conveying channel is provided in the middle of the base, a connecting mechanism is provided between the pressure plate and the base, a spinneret channel is provided inside the spinneret, a cavity is provided on the upper side of the spinneret channel, and the material conveying channel is connected to the cavity.

[0012] The connecting mechanism includes a sliding groove, which is formed on the inner walls of both sides of the mounting groove. A retaining strip is slidably connected inside the sliding groove. Both sides of the pressure plate are provided with retaining grooves. The retaining strip and the retaining groove are connected by a snap-fit ​​connection.

[0013] As a preferred technical solution of this application, a spring is fixedly installed on the inner wall of the slide, and the other end of the spring is fixedly connected to one side surface of the card strip.

[0014] As a preferred technical solution of this application, a connecting rod is fixedly installed on one side surface of the card strip, and the connection between the connecting rod and the base is a sliding connection.

[0015] As a preferred technical solution of this application, a first protruding rod is fixedly installed on the upper surface of the pressure plate, a first slot is opened on the inner wall of the mounting groove, and the connection between the first protruding rod and the first slot is a snap-fit ​​connection.

[0016] As a preferred technical solution of this application, a second protruding rod is fixedly installed on the upper surface of the pressure plate, and a second slot is opened on the lower surface of the spinneret, and the connection between the second protruding rod and the second slot is a snap-fit ​​connection.

[0017] As a preferred technical solution of this application, an installation frame is provided inside the cavity, and a filter screen is fixedly installed inside the installation frame.

[0018] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0019] In the scheme of this application:

[0020] 1. By setting sliding grooves and retaining strips on both sides of the mounting slot, which cooperate with the retaining grooves on both sides of the pressure plate, and with the spring force, the retaining strips are stably locked in place. No tools are required for installation; simply push the retaining strips to connect the pressure plate to the base, thereby fixing the spinneret. Disassembly is equally simple. Compared with the traditional bolt fixing method, this greatly simplifies the installation and disassembly process, saves time and costs, significantly improves work efficiency, and is convenient for single-person operation.

[0021] 2. By creating an installation frame and installing a filter screen inside the spinneret cavity, the molten material enters the cavity from the feeding channel and is first filtered by the filter screen. The filter screen effectively intercepts impurities in the molten material, ensuring the purity of the molten material entering the spinneret channel. This prevents impurities from clogging the spinneret channel, ensuring the uniformity of the spinneret and thus improving the quality of the meltblown fabric. Attached image description:

[0022] Figure 1 This is a three-dimensional structural diagram of the present invention;

[0023] Figure 2 This is a side view of the cross-sectional structure of the present invention;

[0024] Figure 3 This is a top view of the cross-sectional structure of the connecting mechanism of this utility model;

[0025] Figure 4 This is a three-dimensional structural diagram of the pressure plate of this utility model;

[0026] Figure 5 This utility model Figure 3 A magnified structural diagram of part A in the middle.

[0027] The image shows:

[0028] 1. Base; 2. Placement slot; 3. Spinneret; 4. Mounting slot; 5. Pressure plate; 6. Material conveying channel;

[0029] 7. Connecting mechanism; 701. Slide groove; 702. Locking bar; 703. Locking groove; 704. Spring; 705. Connecting rod; 706. First protruding rod; 707. First slot; 708. Second protruding rod; 709. Second slot; 8. Spinning channel; 9. Cavity; 10. Mounting frame; 11. Filter screen. Detailed Implementation

[0030] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described examples are only some embodiments of this utility model, and not all embodiments.

[0031] Therefore, the following detailed description of the embodiments of this utility model is not intended to limit the scope of the claimed utility model, but merely to illustrate some embodiments of the utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without inventive effort are within the scope of protection of this utility model.

[0032] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0033] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0034] In the description of this utility model, it should be noted that the terms "upper" and "lower," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this utility model is in use, or the orientation or positional relationship commonly understood by those skilled in the art. These terms 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 on this utility model. In addition, the terms "first" and "second," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0035] To address the technical problems in the background section, the following meltblown die head for a meltblown machine is provided:

[0036] Combination Figure 1 - Figure 4 As shown, the present invention provides a meltblown die head for a meltblown machine, including a base 1. The bottom of the base 1 is provided with a placement groove 2, and a spinneret 3 is engaged inside the placement groove 2. The lower surface of the placement groove 2 is provided with an installation groove 4, and a pressure plate 5 is engaged inside the installation groove 4. The pressure plate 5 is engaged with the spinneret 3. A material conveying channel 6 is provided in the middle of the base 1. A connecting mechanism 7 is provided between the pressure plate 5 and the base 1. A spinneret channel 8 is provided inside the spinneret 3, and a cavity 9 is provided on the upper side of the spinneret channel 8. The material conveying channel 6 is connected to the cavity 9. The connecting mechanism 7 includes a sliding groove 701, which is opened on the inner walls of both sides of the installation groove 4. A retaining strip 702 is slidably connected inside the sliding groove 701. A retaining groove 703 is opened on both sides of the pressure plate 5. The retaining strip 702 and the retaining groove 703 are connected by an engaging connection.

[0037] In this embodiment: a placement groove 2 is carefully formed at the bottom of the base 1, and the spinneret 3 is engaged in the placement groove 2, which plays a good positioning role during installation and ensures that the spinneret 3 is in the correct position. The lower surface of the placement groove 2 is further provided with an installation groove 4, and the pressure plate 5 is tightly engaged in the installation groove 4. The pressure plate 5 and the spinneret 3 are also connected by an engagement. This multi-layer engagement structure works together to greatly enhance the stability and reliability of the installation of the spinneret 3, and effectively prevents loosening or displacement during operation.

[0038] A material conveying channel 6 is provided in the middle of the base 1, and a spinneret 3 is provided inside the spinneret 8. A cavity 9 is cleverly provided on the upper side of the spinneret 8. The material conveying channel 6 is connected to the cavity 9, so that the melt can flow smoothly from the material conveying channel 6 into the cavity 9 and then be evenly distributed to each spinneret 8, making full preparation for the subsequent spinneret process.

[0039] A connecting mechanism 7 is provided between the pressure plate 5 and the base 1. This connecting mechanism 7 includes sliding grooves 701 formed on the inner walls of both sides of the mounting groove 4. A retaining strip 702 is slidably connected within the sliding grooves 701. Corresponding retaining slots 703 are formed on both sides of the pressure plate 5. The retaining strip 702 and the retaining slots 703 are connected by a snap-fit ​​connection. This eliminates the traditional and complex bolt fixing method. Operators only need to control the retaining strip 702 to slide within the sliding grooves 701 through simple push-pull actions to achieve the snap-fit ​​or separation of the retaining strip 702 and the retaining slots 703. This allows for quick installation and disassembly of the pressure plate 5, greatly improving installation efficiency, reducing operational difficulty, and providing significant convenience for the daily maintenance and repair of the meltblown die head.

[0040] In a preferred embodiment, a spring 704 is fixedly installed on the inner wall of the slide groove 701, and the other end of the spring 704 is fixedly connected to one side surface of the retaining strip 702.

[0041] In this embodiment: the spring 704 can hold the retaining strip 702 in place. When the retaining strip 702 is pushed to disengage from the slot 703, the spring 704 is compressed and stores force. After being released, the spring 704 releases its force, pushing the retaining strip 702 to quickly reset and tightly engage in the slot 703, which greatly enhances the firmness of the engagement and effectively prevents the retaining strip 702 from loosening due to vibration and other factors during operation, thus ensuring the stability of the connection between the pressure plate 5 and the base 1.

[0042] In a preferred embodiment, a connecting rod 705 is fixedly installed on one side surface of the card strip 702, and the connecting rod 705 is connected to the base 1 by a sliding connection.

[0043] In this embodiment, the operator only needs to push the connecting rod 705 to easily move the locking strip 702 within the slide groove 701, which facilitates operation.

[0044] In a preferred embodiment, a first protruding rod 706 is fixedly installed on the upper surface of the pressure plate 5, and a first slot 707 is opened on the inner wall of the mounting groove 4, and the connection between the first protruding rod 706 and the first slot 707 is a snap-fit ​​connection.

[0045] In this embodiment: when the pressure plate 5 is installed into the mounting groove 4, the first protrusion 706 is precisely embedded into the first slot 707. This locking design not only plays a preliminary positioning role for the pressure plate 5, allowing the pressure plate 5 to be placed in the appropriate position quickly and accurately, but also enhances the stability of the installation of the pressure plate 5, effectively preventing the pressure plate 5 from shifting or shaking during operation, and ensuring the stability of the overall structure of the meltblown die head and the reliability of its operation.

[0046] In a preferred embodiment, a second protruding rod 708 is fixedly installed on the upper surface of the pressure plate 5, and a second slot 709 is opened on the lower surface of the spinneret 3, and the connection between the second protruding rod 708 and the second slot 709 is a snap-fit ​​connection.

[0047] In this embodiment: when the pressure plate 5 is installed in place, the second protrusion 708 will simultaneously engage with the second slot 709, further strengthening the connection between the pressure plate 5 and the spinneret 3, effectively preventing the two from becoming loose or misaligned due to factors such as melt flow and equipment vibration during operation, thereby ensuring that the meltblown die head can operate stably and efficiently, and guaranteeing the production quality of meltblown fabric.

[0048] In a preferred embodiment, a mounting frame 10 is provided inside the cavity 9, and a filter screen 11 is fixedly installed inside the mounting frame 10.

[0049] In this embodiment: when the melt flows into the cavity 9 from the feeding channel 6, the filter screen 11 plays a key role in effectively intercepting impurities, particles and other foreign objects that may exist in the melt, preventing them from entering the spinning channel 8, and avoiding the impact on the spinning effect and the quality of the meltblown fabric due to foreign objects blocking the channel.

[0050] Specifically, the working principle of this solution is as follows:

[0051] During use, the melt flows into the upper cavity 9 of the spinneret 3 through the feeding channel 6 in the middle of the base 1. The filter screen 11 in the cavity 9 intercepts impurities in the melt, ensuring its purity. The melt is then evenly distributed to each spinneret channel 8 to complete the spinning. During installation, the spinneret 3 is positioned by the slot 2 at the bottom of the base 1. The pressure plate 5 is inserted into the mounting slot 4 and engages with the spinneret 3, forming a multi-stage stable structure. The pressure plate 5 is connected to the base 1 through the connecting mechanism 7. Pushing the connecting rod 705 causes the locking strip 702 to slide in the slide groove 701, achieving engagement or disengagement with the slot 703 of the pressure plate 5. The elasticity of the spring 704 makes the engagement more secure. At the same time, the first protrusion 706 on the pressure plate 5 is engaged in the first slot 707 of the mounting slot 4 for initial positioning, and the second protrusion 708 is engaged in the second slot 709 of the spinneret 3 to strengthen the connection. This die head, through its multi-layered interlocking, convenient connection, and efficient filtration design, ensures a stable structure, easy operation, and consistent spun yarn quality, thereby improving the production efficiency and quality of meltblown fabric.

[0052] The above is the entire working process of the device, and all contents not described in detail in this specification are existing technologies known to those skilled in the art.

[0053] The above embodiments are only used to illustrate the present utility model and are not intended to limit the technical solutions described in the present utility model. Although the present utility model has been described in detail with reference to the above embodiments, the present utility model is not limited to the specific embodiments described above. Therefore, any modifications or equivalent substitutions to the present utility model, and all technical solutions and improvements that do not depart from the spirit and scope of the utility model, are covered within the scope of the claims of the present utility model.

Claims

1. A meltblown die head for a meltblown machine, comprising a base (1), characterized in that: The base (1) has a placement groove (2) at its bottom, and a spinneret (3) is engaged inside the placement groove (2). The lower surface of the placement groove (2) has an installation groove (4), and a pressure plate (5) is engaged inside the installation groove (4). The pressure plate (5) is engaged with the spinneret (3). The middle part of the base (1) has a material conveying channel (6). A connecting mechanism (7) is provided between the pressure plate (5) and the base (1). The spinneret (3) has a spinneret channel (8) inside, and a cavity (9) is provided on the upper side of the spinneret channel (8). The material conveying channel (6) is connected to the cavity (9). The connecting mechanism (7) includes a slide groove (701), which is opened on both sides of the inner wall of the mounting groove (4). A retaining strip (702) is slidably connected inside the slide groove (701). A retaining groove (703) is opened on both sides of the pressure plate (5). The retaining strip (702) and the retaining groove (703) are connected by a snap-fit ​​connection.

2. The meltblown die head of a meltblown machine according to claim 1, characterized in that: A spring (704) is fixedly installed on the inner wall of the slide (701), and the other end of the spring (704) is fixedly connected to one side surface of the clip (702).

3. The meltblown die head of a meltblown machine according to claim 1, characterized in that: A connecting rod (705) is fixedly installed on one side surface of the card strip (702), and the connecting rod (705) is connected to the base (1) by a sliding connection.

4. The meltblown die head of a meltblown machine according to claim 1, characterized in that: The upper surface of the pressure plate (5) is fixedly installed with a first protruding rod (706), and the inner wall of the mounting groove (4) is provided with a first slot (707), and the connection between the first protruding rod (706) and the first slot (707) is a snap-fit ​​connection.

5. The meltblown die head of a meltblown machine according to claim 1, characterized in that: The upper surface of the pressure plate (5) is fixedly installed with a second protruding rod (708), and the lower surface of the spinneret (3) is provided with a second slot (709), and the connection between the second protruding rod (708) and the second slot (709) is a snap-fit ​​connection.

6. The meltblown die head of a meltblown machine according to claim 1, characterized in that: The cavity (9) has an installation frame (10) inside, and a filter screen (11) is fixedly installed inside the installation frame (10).

Images