Shape memory nonwoven fabric stretching device

Abstract

The utility model relates to a shape memory non -woven fabric stretching device relates to the technical field of fabric stretching equipment, desktop support side cooperation sets up translation slide and elevating slide and carries installation stretching operation platform's tray, the desktop support's table top preset avoidance opening allows the tray to pass through, and two notches install heating softening box and cooling shaping box respectively, two box bodies bottom end open and can be closed by the tray, stretching operation platform bottom adopts the base plate and its surface middle part sets up the central bearing boss, and the base plate surface edge surrounds and sets up multiple sets of fixed tooling and multiple sets of stretching tooling along the center line symmetry, and the fixed tooling includes the positioning column and fixed pressure rod, and the stretching tooling includes linear lead screw module, adapter plate and stretching clamp jaw. Stretching operation platform sets up multiple sets of fixed and stretching tooling, switches between heating softening box and cooling shaping box in combination with elevating translation control, can satisfy temperature demand while realizing partial stretching of multiple positions in different directions.

Description

Technical Field

[0001] This utility model relates to the field of fabric stretching equipment technology, specifically a shape memory nonwoven fabric stretching device. Background Technology

[0002] Shape memory nonwoven fabrics have been widely used in the field of facial mask manufacturing due to their excellent shape memory effect, good biocompatibility, and breathability and moisture permeability. These masks can closely conform to facial contours through their shape memory function, adapting to the curved shapes of different areas such as the eye area, nose wings, and corners of the mouth, thus improving the absorption of skincare ingredients. Therefore, the shape memory nonwoven fabric needs to undergo multi-directional, localized, and precise stretching and shaping during the manufacturing process to meet the mask's fit requirements.

[0003] However, current fabric stretching equipment generally suffers from the following defects: First, the stretching direction is singular, and most can only achieve unidirectional or bidirectional overall stretching, failing to provide multi-position, multi-directional coordinated stretching for products like face masks that require localized differentiated stretching, resulting in poor fabric adaptability after stretching; Second, the fixed points lack flexibility, failing to selectively fix areas that do not require stretching according to the different needs of the face mask, easily leading to fabric displacement and uneven stress during stretching, affecting shaping accuracy; Third, the coordination between temperature control and stretching action is poor. The stretching and shaping of shape memory nonwoven fabrics relies on a continuous process of heating softening - stretching deformation - cooling shaping. Existing equipment mostly uses a single temperature environment, and the temperature treatment links are not well connected, resulting in insufficient fabric softening and poor shaping effect after stretching, failing to fully utilize the performance of shape memory materials.

[0004] To address the aforementioned shortcomings, there is an urgent need for a stretching device that can adapt to the needs of face mask preparation using shape memory nonwoven fabrics, and achieve multi-directional local stretching and effective coordination of temperature and stretching action, in order to solve the problem that existing equipment cannot meet the requirements of face mask preparation processes. Summary of the Invention

[0005] To address the shortcomings of the prior art, this utility model provides a shape memory nonwoven fabric stretching device. The stretching operation table is equipped with multiple sets of fixing and stretching fixtures. Combined with lifting and translation control, it switches between a heating softening box and a cooling shaping box, which can meet the temperature requirements while achieving local stretching in multiple positions and different directions.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a shape memory nonwoven fabric stretching device, comprising a desktop support, a translation slide, a lifting slide, a stretching operation table, a heating softening box, and a cooling shaping box; The desktop support has a sliding slide along its length at the bottom side. A lifting slide is installed on the moving part of the sliding slide. A tray is installed on the moving part of the lifting slide. A stretching operation table is installed on the surface of the tray. A clearance opening is preset at the front end of the desktop support to allow the tray to pass through. Two slots are preset in the middle and rear of the desktop support to install a heating softening box and a cooling shaping box, respectively. The bottom ends of the heating softening box and the cooling shaping box are open and can be closed by the tray. The bottom of the stretching operation table is a base plate with a central bearing boss in the middle of its surface. Multiple sets of fixing fixtures and multiple sets of stretching fixtures are arranged around the edge of the base plate and symmetrically arranged along the center line. The fixing fixture includes a positioning post and a fixing rod. The positioning post is connected and fixed to the base plate. The fixing rod has a mounting hole at its end, is fitted onto the positioning post, and is tightened in place with a locking screw. The fixing rod has a bolt clamping part at its head. The stretching fixture includes a linear screw module, an adapter plate, and stretching jaws. The linear screw module is connected and fixed to the base plate. The adapter plate is inclined and slidably connected to the moving part of the linear screw module along its axial direction. The stretching jaws are horizontally slidably connected to the side wall of the adapter plate. The adapter plate and the stretching jaws are locked in position by locking screws.

[0007] Furthermore, shock-absorbing casters are installed at the four corners of the bottom surface of the desktop support and the sliding slide.

[0008] Furthermore, the top of the positioning post is made into a radially tapering stepped section, and the bottom of the stepped section is flush with the surface of the central bearing boss.

[0009] Furthermore, the bolt clamping component includes a pressure plate and an adjusting bolt. The pressure plate is arranged below the first end of the fixed pressure rod. Two guide rods are symmetrically arranged on the back of the pressure plate and slide in cooperation with two guide holes corresponding to the first end of the fixed pressure rod. The adjusting bolt is located in the middle of the two guide rods and is rotatably connected to the back of the pressure plate. At the same time, the adjusting bolt is screwed in cooperation with the screw hole corresponding to the first end of the fixed pressure rod.

[0010] Furthermore, a silicone pad is provided at the bottom of the tablet press.

[0011] Compared with the prior art, the beneficial effects of this utility model are as follows: This utility model uses a desktop support, a sliding slide, a lifting slide, a heating softening box, and a cooling shaping box to form a main support frame that can flexibly switch operating positions and temperature control. Through the coordinated control of the sliding slide and the lifting slide, the tray can drive the stretching operation table loaded with fabric to flexibly switch between the two boxes. The stretching action is precisely executed in the corresponding temperature environment, ensuring that the fabric is fully deformed in the softened state and stably shaped in the cooling environment, which greatly improves the shape memory effect and shaping stability of the mask. The stretching operation table is symmetrically arranged around the central support boss and equipped with multiple sets of fixing and stretching fixtures, which can not only accurately fix the core area that does not need to be stretched, but also realize local stretching in multiple positions and different directions in the edge area, effectively solving the problem of the single stretching direction of the existing equipment. Attached Figure Description

[0012] Figure 1 This is an isometric schematic diagram of the overall structure of the tensioning device of this utility model; Figure 2 This is an isometric schematic diagram of the stretching operation table in this utility model.

[0013] In the diagram: 1. Desktop support; 2. Translation slide; 3. Lifting slide; 4. Stretching worktable; 5. Heating and softening box; 6. Cooling and shaping box; 301. Tray; 401. Base plate; 402. Positioning post; 403. Fixing rod; 404. Linear screw module; 405. Adapter plate; 406. Stretching gripper; 4011. Central bearing boss; 4031. Bolt clamping component. Detailed Implementation

[0014] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of this utility model. Obviously, the described embodiments are only some embodiments of the utility model, not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the protection scope of this utility model.

[0015] like Figures 1-2 As shown, a shape memory nonwoven fabric stretching device includes a desktop support 1, a translation slide 2, a lifting slide 3, a stretching operation table 4, a heating softening box 5, and a cooling shaping box 6. It is an operating device that targets the intelligent response characteristics of shape memory materials and achieves controllable stretching of shape memory nonwoven fabric through precise and controllable mechanical stretching action combined with temperature change control, so as to transform it from a temporary deformation state to the required shaping state.

[0016] Combination Figure 1As shown, a sliding slide 2 is fixedly installed along the length of the bottom side of the desktop support 1. A lifting slide 3 is fixedly installed on the moving part of the sliding slide 2. A tray 301 is fixedly installed on the moving part of the lifting slide 3. A stretching operating table 4 is installed on the surface of the tray 301. A clearance opening is preset at the front end of the table of the desktop support 1 to allow the tray 301 to move up and down. At the same time, two slots are preset in the middle and rear of the table of the desktop support 1 to install and fix a heating softening box 5 and a cooling shaping box 6, respectively. Both the heating softening box 5 and the cooling shaping box 6 adopt a box structure with an open bottom and can be closed by the tray 301.

[0017] In summary, the main supporting frame of the device is formed by the desktop support 1, the translation slide 2, the lifting slide 3, the heating and softening box 5, and the cooling and shaping box 6, wherein: The desktop support 1 is constructed from profiles, with the tabletop supported by a frame. To facilitate the use of the main support frame, shock-absorbing casters can be installed at the four corners of the bottom of the desktop support 1 and the sliding table 2, which facilitates the movement of the entire device and provides some shock absorption to protect the components.

[0018] The translation slide 2 and the lifting slide 3 can be freely selected, such as a linear motor module or a lead screw module, as long as the displacement control function and control accuracy are met.

[0019] The heating softening box 5 and the cooling shaping box 6 are constant temperature chambers, mainly used to meet the temperature change requirements during the shape memory nonwoven fabric transformation and shaping.

[0020] The tray 301 is a movable component. While assembling the stretching operating table 4, it can be vertically displaced under the control of the lifting slide 3. When it is above the table surface of the desktop support 1, it facilitates the loading and unloading of the shape memory nonwoven fabric and the stretching operating table 4. When it is below the table surface of the desktop support 1, it can be combined with the horizontal displacement control of the translation slide 2 to select the bottom of the heating softening box 5 or the cooling shaping box 6 to be sealed as needed. During the sealing period, the stretching operating table 4 loaded with the shape memory nonwoven fabric is located inside the corresponding box for softening or shaping.

[0021] Combination Figure 2 As shown, the bottom of the stretching operation table 4 uses a base plate 401. A central support boss 4011 is integrally formed at the center of the surface of the base plate 401 for supporting the shape memory nonwoven fabric. The surface contour of the central support boss 4011 should be slightly smaller than the shape memory nonwoven fabric, so that the edge of the shape memory nonwoven fabric is suspended to reserve a clamping and stretching area. A total of 8 fixing fixtures and 6 stretching fixtures are set on the edge of the base plate 401 surface. The overall structure is symmetrical at both ends. All fixtures are symmetrically arranged along the center line of the base plate 401 to ensure the symmetry of the stretching. The fixing fixture is mainly used for fixing the position of the shape memory nonwoven fabric to achieve a specific stretching effect during stretching. It is used to fix the position of areas where stretching is not required, and includes positioning posts 402 and fixing rods 403. The positioning posts 402 are arranged around the central bearing boss 4011 and are connected and fixed to the edge of the substrate 401. The top of the positioning posts 402 is made into a radially tapering stepped section for limiting the installation of the fixing rods 403. The bottom of the stepped section is flush with the surface of the central bearing boss 4011 to prevent the fixing rods 403 from falling into the bottom ineffective area. The end of the fixing rods 403 has a mounting hole and is fitted onto the stepped section of the positioning posts 402. The fixing rods 403 can be adjusted in height and angle on the stepped section of the positioning posts 402 and are tightened in place with locking screws to adjust the position of its head relative to the shape memory nonwoven fabric. A bolt clamping component 4031 is provided at the first end of the fixed pressure rod 403 to press and fix the shape memory nonwoven fabric onto the central bearing boss 4011. The bolt clamping component 4031 consists of a pressure plate and an adjusting bolt. The pressure plate is arranged below the first end of the fixed pressure rod 403. Two guide rods are symmetrically arranged on the back of the pressure plate, which slide and engage with two guide holes corresponding to the first end of the fixed pressure rod 403 to limit the pressure plate to vertical displacement only. The adjusting bolt is located in the middle of the two guide rods and is rotatably connected to the back of the pressure plate. At the same time, the adjusting bolt is screwed into the screw hole corresponding to the first end of the fixed pressure rod 403. The degree of pressure of the pressure plate can be controlled by rotating the adjusting bolt. In addition, to avoid damage to the shape memory nonwoven fabric during the pressing process, a high-temperature resistant silicone pad can be placed at the bottom of the pressure plate.

[0022] The stretching fixture is mainly used for local stretching of shape memory nonwoven fabric at different positions and in different directions. It includes a linear screw module 404, an adapter plate 405, and stretching jaws 406. The linear screw module 404 is arranged around the central bearing boss 4011 and is embedded and fixed to the edge of the base plate 401, allowing free movement from 0 to 50 mm. The moving part of the linear screw module 404 is provided with a sliding groove along its axial direction. The adapter plate 405 is inclined and slidably connected to the moving part of the linear screw module 404 through a slider, and its position is locked with a locking screw. The side wall of the adapter plate 405 is provided with a horizontal slide rail. The stretching jaws 406 can be freely selected, such as electric jaws or pneumatic jaws, as long as they meet the clamping function and clamping force. The stretching jaws 406 are slidably mounted on the side wall of the adapter plate 405 and their position is locked with a locking screw.

[0023] Of the aforementioned 8 fixed fixtures and 6 stretching fixtures, the 6 fixed fixtures and 6 stretching fixtures can be arranged in a cross pattern or other symmetrical arrangements as needed. The remaining 2 fixed fixtures are extended to reach the center of the central bearing boss 4011. It is worth mentioning that... Figure 2The arrangement shown is only a specific design for processing shape memory nonwoven fabric masks in actual operation, and does not mean that the fixed fixtures and stretching fixtures of the stretching worktable 4 can only adopt this arrangement.

[0024] Working principle: In use, the tray 301 is initially positioned directly above the clearance opening of the desktop support 1. The operator places 1 to 10 sheets of shape memory nonwoven fabric to be stretched on the central bearing boss 4011. First, adjust the fixing rods 403 of each fixing fixture so that their bolt clamping parts 4031 are in the required fixed positions. Tighten the locking screws to fix the fixing rods 403 in their fixed positions, and tighten the adjusting bolts of the bolt clamping parts 4031 so that each fixing fixture presses the fixed position of the shape memory nonwoven fabric onto the central bearing boss 4011. Then, adjust the position of the adapter plate 405 relative to the moving part of the linear screw module 404 and the position of the stretching claws 406 relative to the adapter plate 405. Tighten the locking screws to fix the adapter plate 405 and the stretching claws 406 so that the clamping jaws of each stretching claw 406 correspond to the stretching area of ​​the edge of the shape memory nonwoven fabric. Finally, the control system activates the closing and clamping of each stretching gripper 406. The lifting slide 3 drives the tray 301 through the clearance opening of the tabletop support 1 and descends below the table surface. The translation slide 2 drives the lifting slide 3 to translate, moving the tray 301 to below the heating and softening box 5. Then, the lifting slide 3 is controlled to lift the tray 301 to close the bottom of the heating and softening box 5. The internal temperature of the heating and softening box 5 is kept constant at the softening temperature (e.g., 60℃). The linear screw module 404 of each stretching fixture is controlled to drive the stretching gripper 406 to complete the stretching of the shape memory nonwoven fabric at the specified position. Then, the lifting slide 3 and translation slide 2 are controlled in the same way to close the bottom of the cooling and shaping box 6 with the tray 301. The internal temperature of the cooling and shaping box 6 is kept constant at the shaping temperature (e.g., 10℃). This is maintained for a period of time until the shape memory nonwoven fabric is shaped. Then, the tray 301 is controlled to return to the initial position, and the operator removes the stretched shape memory nonwoven fabric.

[0025] It will be apparent to those skilled in the art that this invention is not limited to the details of the exemplary embodiments described above, and that it can be implemented in other forms without departing from the spirit or essential characteristics of this invention. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of this invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of the equivalents of the claims are intended to be included within this invention. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0026] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A shape memory nonwoven fabric stretching device, characterized in that: It includes a desktop support (1), a translation slide (2), a lifting slide (3), a stretching worktable (4), a heating and softening box (5), and a cooling and shaping box (6); The desktop support (1) has a sliding slide (2) on its side bottom along its length direction. A lifting slide (3) is installed on the moving part of the sliding slide (2). A tray (301) is installed on the moving part of the lifting slide (3). A stretching operation table (4) is installed on the surface of the tray (301). A clearance opening is preset at the front end of the desktop support (1) to allow the tray (301) to pass through. Two slots are preset in the middle and rear of the desktop support (1) to install a heating softening box (5) and a cooling shaping box (6) respectively. The bottom ends of the heating softening box (5) and the cooling shaping box (6) are open and can be closed by the tray (301). The bottom of the stretching operation table (4) is made of a base plate (401) and a central bearing boss (4011) is provided in the middle of its surface. Multiple sets of fixing fixtures and multiple sets of stretching fixtures are arranged around the edge of the base plate (401) and symmetrically arranged along the center line. The fixing fixture includes a positioning post (402) and a fixing rod (403). The positioning post (402) is connected and fixed to the base plate (401). The fixing rod (403) has an installation hole at its end, is fitted onto the positioning post (402), and is tightened in place with a locking screw. The fixing rod (403) has a bolt clamping part (4031) at its head. The stretching fixture includes a linear screw module (404), an adapter plate (405), and a stretching gripper (406). The linear screw module (404) is connected and fixed to the base plate (401). The adapter plate (405) is inclined and slidably connected to the moving part of the linear screw module (404) along its axial direction. The stretching gripper (406) is horizontally slidably connected to the side wall of the adapter plate (405). The adapter plate (405) and the stretching gripper (406) are locked in position by locking screws.

2. The shape memory nonwoven fabric stretching device according to claim 1, characterized in that: Shock-absorbing casters are installed at the four corners of the bottom surface of the desktop bracket (1) and the sliding slide (2).

3. The shape memory nonwoven fabric stretching device according to claim 1, characterized in that: The top of the positioning post (402) is made into a radially contracting stepped section, and the bottom of the stepped section is flush with the surface of the central bearing boss (4011).

4. The shape memory nonwoven fabric stretching device according to claim 1, characterized in that: The bolt clamping component (4031) includes a pressure plate and an adjusting bolt. The pressure plate is arranged below the head end of the fixed pressure rod (403). Two guide rods are symmetrically arranged on the back of the pressure plate and slide in cooperation with two guide holes corresponding to the head end of the fixed pressure rod (403). The adjusting bolt is located in the middle of the two guide rods and is rotatably connected to the back of the pressure plate. At the same time, the adjusting bolt is screwed in cooperation with the screw hole corresponding to the head end of the fixed pressure rod (403).

5. The shape memory nonwoven fabric stretching device according to claim 4, characterized in that: A silicone pad is provided at the bottom of the tablet press.

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