Shrinkage and infiltration prevention tool
The detachable connection and clamping structure of the inner and outer frames solves the problem of uneven fixation during the ePTFE impregnation and drying process, achieving uniform shrinkage of the expanded sheet and improving product yield.
Patent Information
- Application Number
- CN202422913520.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-11-27
- Publication Date
- 2025-11-07
- Estimated Expiration
- 2034-11-27
AI Technical Summary
Uneven fixation of ePTFE during impregnation and drying process leads to uneven shrinkage and insufficient product yield.
It adopts an inner frame and an outer frame structure, with the outer frame detachably connected around the inner frame. The outer perimeter of the expanded sheet is clamped between the inner frame and the outer frame to achieve uniform fixation.
It improves the uniformity of shrinkage during the impregnation and drying process, thereby increasing the product yield.
Smart Images
Figure CN223520271U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of expanded material manufacturing, and in particular to an anti-shrinkage infiltration tool. BACKGROUND
[0002] Expanded Polytetrafluoroethylene (ePTFE) is a type of polytetrafluoroethylene (PTFE) that has been specially treated to form a porous structure through physical or chemical methods. This material has many unique properties, including but not limited to extremely low friction coefficient, chemical corrosion resistance, high temperature resistance, good electrical insulation, and biocompatibility. Based on these characteristics, ePTFE has a wide range of applications in medical, industrial, and clothing fields.
[0003] ePTFE is usually treated with an infiltration drying process to impart specific functionality or improve its performance. For example, when manufacturing waterproof and breathable fabrics, ePTFE films may be impregnated with certain chemicals to enhance their waterproofness while maintaining breathability.
[0004] However, current ePTFE is mainly fixed at a single point, which is inconvenient to operate, and the uneven stress during the infiltration drying process leads to uneven shrinkage, resulting in insufficient product yield. CONTENT OF THE INVENTION
[0005] The purpose of the present application is to provide an anti-shrinkage infiltration tool that uniformly fixes the outer periphery of the expanded sheet, has good fixing effect, is convenient to operate, can improve the uniformity of shrinkage during the infiltration drying process, and thus improve the product yield.
[0006] Embodiments of the present application can be implemented as follows:
[0007] In a first aspect, the present application provides an anti-shrinkage infiltration tool, comprising an inner frame and an outer frame, the outer frame surrounds the outer periphery of the inner frame, the outer frame is detachably connected with the inner frame, and the outer periphery wall of the inner frame and the inner periphery wall of the outer frame are used to clamp the expanded sheet.
[0008] In an optional embodiment, the inner frame comprises a plurality of straight bars connected end to end in sequence, and the outer frame comprises a plurality of clamping bars, each side of the straight bar away from the center of the inner frame corresponds to and is connected with at least one clamping bar, and each straight bar and the corresponding at least one clamping bar are used to clamp a part of the expanded sheet.
[0009] In an optional embodiment, the inner frame comprises four straight bars, and the included angle between adjacent two straight bars is 90°.
[0010] In an optional embodiment, the inner frame is rectangular, the four straight bars are divided into two opposite long straight bars and two opposite short straight bars, the long straight bars and the short straight bars are connected at an angle, all the clamping bars include two long clamping bars and two short clamping bars, and each of the two long straight bars has at least one long clamping bar on a side opposite to the other, and each of the two short straight bars has at least one short clamping bar on a side opposite to the other.
[0011] In an optional embodiment, half of the length of each straight bar is less than the length of a corresponding clamping bar, and each straight bar corresponds to a clamping bar.
[0012] In an optional embodiment, the length of each straight bar is equal to the length of a corresponding clamping bar.
[0013] In an optional embodiment, the thickness of the straight bars is the same as the thickness of the clamping bars.
[0014] In an optional embodiment, two adjacent straight bars are welded.
[0015] In an optional embodiment, each of the gaps is connected by a bolt.
[0016] In an optional embodiment, the inner frame is provided with a plurality of first connecting holes, the outer frame is provided with a plurality of second connecting holes, the first connecting holes and the second connecting holes correspond to each other one by one, and each bolt cooperates with a first connecting hole and a second connecting hole.
[0017] Compared with the prior art, the beneficial effects of the embodiments of the present application include, for example:
[0018] By folding the outer periphery of the expanded sheet material such as expanded polytetrafluoroethylene material into the gap between the outer peripheral wall of the inner frame and the inner peripheral wall of the outer frame, and then detachably connecting the outer frame and the inner frame, the expanded sheet material is clamped and fixed, the outer periphery of the expanded sheet material is uniformly fixed, the fixing effect is good, the operation is convenient, the uniformity of shrinkage during the infiltration drying process can be improved, and the product yield can be improved. BRIEF DESCRIPTION OF DRAWINGS
[0019] In order to more clearly illustrate the technical solutions in the specific embodiments or prior art of the present application, the drawings needed in the specific embodiments or prior art description will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can also obtain other drawings according to these drawings without creative labor.
[0020] Figure 1 A schematic view of the shrinkage prevention infiltration tooling of the embodiments of the present application;
[0021] Figure 2 Fig. 1 is a schematic view of the inner frame of the present application; Figure 1
[0022] Figure 3 Fig. 2 is a schematic view of the outer frame of the present application; Figure 1
[0023] Figure 4 Fig. 3 is a schematic view of the clamping strip of the present application; Figure 1
[0024] Fig. 4 is a schematic view of the clamping strip of the present application. DETAILED DESCRIPTION
[0025] In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some but not all of the embodiments of the present application. The components of the embodiments of the present application described and shown in the drawings herein can be arranged and designed in various different configurations.
[0026] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative work fall within the scope of protection of the present application.
[0027] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings.
[0028] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship commonly placed when the product of the present application is used, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" and the like are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.
[0029] In addition, the terms "horizontal", "vertical", "overhang" and the like do not mean that the components must be absolutely horizontal or overhanging, but can be slightly inclined. For example, "horizontal" only means that it is more horizontal relative to "vertical", and does not mean that the structure must be completely horizontal, but can be slightly inclined.
[0030] In the description of the present application, it should be further pointed out that, unless otherwise explicitly specified and limited, the terms "arrangement", "installation", "connection", "connection" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium, or it can be the communication inside two elements. For those skilled in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.
[0031] Some embodiments of the present application will be described in detail below with reference to the accompanying drawings. The following examples and features in the examples can be combined with each other without conflict.
[0032] Reference Figure 1 The embodiments of the present application disclose a shrinkage-preventing infiltration tool, which comprises an inner frame 10 and an outer frame 20, the outer frame 20 surrounds the outer peripheral side of the inner frame 10, the outer frame 20 is detachably connected with the inner frame 10, and a gap for clamping the expanded sheet is formed between the outer peripheral wall of the inner frame 10 and the inner peripheral wall of the outer frame 20.
[0033] In this way, by folding the outer peripheral edge of the expanded sheet such as expanded polytetrafluoroethylene material into the gap between the outer peripheral wall of the inner frame 10 and the inner peripheral wall of the outer frame 20, and then detachably connecting the outer frame 20 and the inner frame 10, the clamping and fixing of the expanded sheet are realized, the outer peripheral edge of the expanded sheet is uniformly fixed, the fixing effect is good, the operation is convenient, the uniformity of shrinkage in the infiltration and drying process can be improved, and the product yield can be improved.
[0034] In addition, the tool only contacts the outer peripheral edge of the expanded sheet, so that the contact between the tool and the middle effective area of the expanded sheet can be avoided, the middle effective area of the expanded sheet is ensured not to contact the tool, and unnecessary damage can be avoided.
[0035] In detail, reference is made to Figure 2, the inner frame 10 comprises a plurality of straight strips 11 connected end to end in sequence, so that the inner frame 10 is polygonal, and the outer frame 20 comprises a plurality of clamping strips 21, each side of each straight strip 11 away from the center of the inner frame 10 corresponds to and is connected to at least one clamping strip 21, and each straight strip 11 and the corresponding at least one clamping strip 21 are used to clamp a part of the expanded sheet, so that by making the outer frame 20 into a plurality of clamping strips 21 in sections, and then connecting the at least one clamping strip 21 corresponding to each straight strip 11 of the inner frame 10 to the straight strip 11, the uniformity of the expanded sheet during folding of the outer peripheral edge of the expanded sheet onto the outer side wall of the inner frame 10 can be ensured, and the outer peripheral edge of the expanded sheet is clamped in sections to achieve uniform fixation of the expanded sheet.
[0036] Of course, in some embodiments, the outer frame 20 can also be an entire part like the inner frame 10, in which a plurality of clamping strips 21 are connected end to end in sequence, and the inner frame 10 and the outer frame 20 can also be circular or other shapes, which can be flexibly set according to the actual shape requirements of the expanded sheet.
[0037] In the embodiment, the inner frame 10 comprises four straight strips 11, and the included angle between adjacent two straight strips 11 is 90°, so that the inner frame 10 is rectangular, and the four edges of the rectangular expanded sheet are folded between the straight strips 11 and the at least one clamping strip 21 corresponding to the straight strips 11, and then the straight strips 11 and the clamping strips 21 are connected and fixed, thereby achieving fixation of the expanded sheet.
[0038] Specifically, in combination with Figures 1 to 4 , the inner frame 10 is rectangular, and the four straight strips 11 are divided into two opposite long straight strips 12 and two opposite short straight strips 13, the long straight strips 12 and the short straight strips 13 are connected at an included angle, all the clamping strips 21 comprise two long clamping strips 22 and two short clamping strips 23, and each side of the two long straight strips 12 away from each other has at least one long clamping strip 22, and each side of the two short straight strips 13 away from each other has at least one short clamping strip 23, so that the length of the clamping strip 21 is also adjusted according to the shape of the inner frame 10 to ensure uniformity of fixation of the four edges of the expanded sheet.
[0039] In the embodiment, each straight strip 11 corresponds to one clamping strip 21, and half the length of each straight strip 11 is less than the length of the corresponding one clamping strip 21, and specifically, the length of each straight strip 11 can be equal to the length of the corresponding one clamping strip 21. In this way, each straight strip 11 only needs to be connected to one clamping strip 21 to conveniently clamp one edge of the expanded sheet. Of course, in some embodiments, half the length of each straight strip 11 is greater than or equal to the length of the corresponding one clamping strip 21, so that each straight strip 11 can correspond to more than two clamping strips 21.
[0040] The thickness of the straight bars 11 is the same as the thickness of the clamping bars 21, for example, a square tube can be selected, and two adjacent straight bars 11 are welded, which facilitates batch manufacturing of the anti-shrinkage infiltration tooling and ensures the strength of the inner frame 10. Of course, in some embodiments, the inner frame 10 can also be integrally formed.
[0041] Each is connected by a bolt, which facilitates quick assembly, transfer or disassembly. Specifically, the straight bars 11 of the inner frame 10 are provided with a plurality of first connecting holes 14, and the clamping bars 21 of the outer frame 20 are provided with a plurality of second connecting holes 24. The first connecting holes 14 and the second connecting holes 24 correspond one by one, and each bolt cooperates with a first connecting hole 14 and a second connecting hole 24. For example, the inner peripheral wall of the first connecting hole 14 or the inner peripheral wall of the second connecting hole 24 can be provided with external threads to be threadedly connected with the bolt.
[0042] Of course, in some embodiments, the inner frame 10 and the outer frame 20 can also be detachably connected in a buckle connection manner. The present application does not specifically limit the specific connection manner, as long as the detachable connection of the inner frame 10 and the outer frame 20 can be achieved, which facilitates quick assembly, transfer or disassembly.
[0043] In summary, the anti-shrinkage infiltration tooling disclosed in the embodiments of the present application can achieve clamping and fixing of the expanded sheet material by folding the outer peripheral edge of the expanded sheet material such as expanded polytetrafluoroethylene material into the gap between the outer peripheral wall of the inner frame 10 and the inner peripheral wall of the outer frame 20, and then detachably connecting the outer frame 20 and the inner frame 10. In this way, the outer peripheral edge of the expanded sheet material is uniformly fixed, the fixing effect is good, the operation is convenient, the uniformity of shrinkage during the infiltration and drying process can be improved, and the product yield can be improved.
[0044] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present application, but not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.
Claims
1. An anti-shrinkage infiltration tooling characterized by, The frame comprises an inner frame (10) and an outer frame (20) surrounding the outer periphery of the inner frame (10), the outer frame (20) is detachably connected with the inner frame (10), and the outer periphery wall of the inner frame (10) and the inner periphery wall of the outer frame (20) are used for clamping the expanded sheet.
2. The shrinkage-preventing infiltration tooling of claim 1, wherein, The inner frame (10) comprises a plurality of straight bars (11) connected end to end in sequence, and the outer frame (20) comprises a plurality of clamping bars (21), each side of each straight bar (11) away from the center of the inner frame (10) corresponds and is connected with at least one clamping bar (21), and each straight bar (11) and the corresponding at least one clamping bar (21) are used for clamping a part of the expanded sheet.
3. The shrinkage-preventing infiltration tooling of claim 2, wherein, The inner frame (10) comprises four straight bars (11), and the included angle between adjacent two straight bars (11) is 90°.
4. The shrinkage-preventing infiltration tooling of claim 3, wherein, The inner frame (10) is rectangular, and the four straight bars (11) are divided into two opposite long straight bars (12) and two opposite short straight bars (13), the long straight bars (12) and the short straight bars (13) are connected at an angle, all the clamping bars (21) comprise two long clamping bars (22) and two short clamping bars (23), and each side of the two long straight bars (12) away from each other has at least one long clamping bar (22), and each side of the two short straight bars (13) away from each other has at least one short clamping bar (23).
5. The shrinkage-preventing infiltration tooling of claim 2, wherein, Half of the length of each straight bar (11) is less than the length of the corresponding clamping bar (21), and each straight bar (11) corresponds to one clamping bar (21).
6. The shrinkage-preventing infiltration tooling of claim 5, wherein, The length of each straight bar (11) is equal to the length of the corresponding clamping bar (21).
7. The shrinkage-preventing infiltration tooling of claim 2, wherein, The thickness of the straight bar (11) and the thickness of the clamping bar (21) are the same.
8. The shrinkage-preventing infiltration tooling of claim 2, wherein, Adjacent two straight bars (11) are welded.
9. The shrinkage-preventing infiltration tooling of claim 1, wherein, Each of the straight bars (11) is connected by a bolt.
10. The shrinkage-preventing infiltration tooling of claim 9, wherein, The inner frame (10) is provided with a plurality of first connecting holes (14), the outer frame (20) is provided with a plurality of second connecting holes (24), the first connecting holes (14) and the second connecting holes (24) correspond one by one, and each bolt cooperates with one first connecting hole (14) and one second connecting hole (24).