An adsorption structure and its manufacturing method

Abstract

This invention discloses an adsorption structure and its manufacturing method, comprising: an adsorption body and a non-circular soft rubber adsorption component, the soft rubber adsorption component having an adsorption surface, the adsorption surface including an annular plane and a trumpet-shaped curved surface connected to the inner periphery of the annular plane, the trumpet-shaped curved surface gradually approaching the adsorption body in a direction pointing towards the geometric center of the soft rubber adsorption component; and an exhaust structure disposed on the adsorption surface and / or the adsorption body. The manufacturing method includes the steps of: injection molding to obtain the adsorption body; performing a secondary injection molding of the adsorption body to form a pre-deformed elastomer, the pre-deformed elastomer having an annular plane and a convex arc surface; cooling the mold to a first temperature and then ejecting the pre-deformed elastomer; cooling the pre-deformed elastomer to room temperature to cause the annular plane and the convex arc surface to shrink into an annular plane and a trumpet-shaped curved surface, respectively. This adsorption structure can control the adsorption surface within a preset shape and size even when the long side dimension of the soft rubber adsorption component is much larger than the short side dimension, resulting in stable adsorption and strong load-bearing capacity.

Description

Technical Field

[0001] This invention relates to the field of daily necessities technology, and in particular to an adsorption structure and its manufacturing method. Background Technology

[0002] Currently, common adsorption structures on the market include an adsorption body and a soft rubber adsorption component on the adsorption body. When in use, the user presses the soft rubber adsorption component onto the surface to be installed so that the gas between the soft rubber adsorption component and the surface to be installed is discharged, thereby fixing the soft rubber adsorption component on the surface to be installed.

[0003] However, the adsorption surface of a typical soft rubber adsorption component is flat. When the user presses the soft rubber adsorption component onto the surface to be installed, most of the adsorption surface is in direct contact with the surface to be installed. The gas between part of the adsorption surface and the surface to be installed cannot be discharged in time, resulting in air bubbles between part of the adsorption surface and the surface to be installed. This leads to a decrease in adsorption force and affects the load-bearing capacity of the soft rubber adsorption component.

[0004] Furthermore, the soft adhesive element is a thermoplastic elastomer obtained through injection molding. However, the cooling and solidification process of thermoplastic elastomers after injection molding is a gradual cooling process from the contour edges towards the center. This causes shrinkage and deformation. When the contour shape of the soft adhesive element is non-circular, for example, a rectangle with a length dimension much larger than its width dimension, the cooling rate in the length direction is much slower than in the width direction. This results in severe shrinkage of the cooled portion of the soft adhesive element, making it impossible to control the adsorption surface within the preset shape and size range. Therefore, when a long adsorption structure needs to be installed along the surface to be mounted, existing single soft adhesive elements cannot meet the requirements. Multiple soft adhesive elements must be stacked to fix the device, which makes it very inconvenient to use. Summary of the Invention

[0005] The present invention aims to at least solve one of the technical problems existing in the prior art. To this end, one objective of the present invention is to provide an adsorption structure with a large adsorption surface, stable adsorption, and strong load-bearing capacity; another objective is to provide a method for manufacturing the above-mentioned adsorption structure, which can control the adsorption surface within a preset shape and size range when the long side dimension of the non-circular soft rubber adsorption part is much larger than the short side dimension, so as to ensure that the adsorption structure has good adsorption capacity.

[0006] According to a first aspect of the present invention, the adsorption body is provided with a non-circular soft rubber adsorption element and an exhaust hole disposed through the middle portion of the soft rubber adsorption element. The soft rubber adsorption element has an adsorption surface protruding from the adsorption body. The adsorption surface includes an annular plane extending inward along the outer periphery of the soft rubber adsorption element and a trumpet-shaped curved surface disposed circumferentially along the exhaust hole and connected to the inner periphery of the annular plane. The trumpet-shaped curved surface can gradually approach the adsorption body in the direction of the inner periphery of the annular plane pointing towards the exhaust hole. A first exhaust groove extends along the long side of the soft rubber adsorption element, is located on the trumpet-shaped curved surface, and communicates with the exhaust hole.

[0007] The adsorption structure according to embodiments of the present invention has at least the following beneficial effects:

[0008] When the above adsorption structure is installed on the surface to be installed, as the adsorption body is pressed, the annular plane first contacts the surface to be installed, and then the trumpet-shaped curved surface gradually contacts the surface to be installed from the inner periphery of the annular plane along the direction towards the exhaust hole, thereby gradually expelling the gas between the adsorption surface and the surface to be installed, reducing air bubbles between the adsorption surface and the surface to be installed. The outline shape of the non-circular soft rubber adsorption part can be set according to the actual use needs, which is beneficial to increase the area of ​​the adsorption surface. The above adsorption structure has the advantages of stable adsorption and strong load-bearing capacity.

[0009] In some embodiments of the present invention, the adsorption body is provided with a rectangular mounting groove, the soft rubber adsorption element is injection molded within the rectangular mounting groove, and the first exhaust groove extends along the length direction of the soft rubber adsorption element to communicate with the exhaust hole.

[0010] In some embodiments of the present invention, the bottom wall of the rectangular mounting groove is formed with a sleeve passing through the geometric center of the soft adhesive adsorption member, the internal channel of the sleeve constitutes the vent hole, the first vent groove is located on the centerline of the short side of the soft adhesive adsorption member, and the first vent groove extends from both ends of the trumpet-shaped curved surface along the length direction to the inlet communicating with the vent hole.

[0011] In some embodiments of the present invention, the trumpet-shaped curved surface is provided with a plurality of second exhaust grooves that intersect with the first exhaust groove, one end of the second exhaust groove is connected to the first exhaust groove, and the other end of the second exhaust groove extends to the outer peripheral edge of the trumpet-shaped curved surface.

[0012] In some embodiments of the present invention, a plurality of second exhaust grooves are arranged at intervals along the extending direction of the first exhaust groove, and an adhesive unit area is defined between two adjacent second exhaust grooves and the first exhaust groove, and adjacent adhesive unit areas are connected by the outer peripheral edge of the trumpet-shaped curved surface.

[0013] In some embodiments of the present invention, a plurality of second exhaust grooves are distributed on both sides of the first exhaust groove, and the second exhaust grooves are orthogonal to the first exhaust groove so that the second exhaust grooves converge the gas into the first exhaust groove.

[0014] In some embodiments of the present invention, the end of the second exhaust groove away from the first exhaust groove is inclined in a direction away from the exhaust hole.

[0015] In some embodiments of the present invention, the trumpet-shaped curved surface is further provided with a plurality of radially distributed third exhaust grooves, one end of the third exhaust grooves being connected to the exhaust hole, and the other end of the third exhaust grooves extending to the outer peripheral edge of the trumpet-shaped curved surface.

[0016] A method for manufacturing the above-described adsorption structure according to a second aspect embodiment of the present invention includes the following steps:

[0017] The adsorption body and the exhaust port are obtained by injection molding.

[0018] The adsorption body is placed in a mold for secondary injection molding. The mold has a first cavity for forming the soft rubber adsorption part. The first cavity has an arched surface, and the arched surface has forming ribs corresponding to the first venting groove. Molten thermoplastic elastomer is injected into the first cavity to form a pre-deformed elastomer. The pre-deformed elastomer has an annular plane, a convex arc surface connected to the inner periphery of the annular plane, and a strip groove formed on the convex arc surface. The convex arc surface matches the arched surface, and the outline edge of the convex arc surface gradually moves away from the adsorption body towards the center of the convex arc surface. After the mold is cooled to a first temperature, the pre-deformed elastomer is ejected. Then, the pre-deformed elastomer is cooled to room temperature so that the annular plane, the convex arc surface, and the strip groove shrink to form the annular plane, the trumpet-shaped curved surface, and the first venting groove, respectively.

[0019] The method for manufacturing an adsorption structure according to an embodiment of the present invention has at least the following characteristics:

[0020] Beneficial effects:

[0021] The above manufacturing method is applicable to the processing of soft rubber adsorption components with non-circular adsorption structures. Even when the long side of the non-circular soft rubber adsorption component is much larger than the short side, the manufacturing method can still control the adsorption surface within the preset shape and size range to form a preset annular plane and trumpet-shaped curved surface, thereby ensuring that the adsorption structure has good adsorption capacity.

[0022] In some embodiments of the present invention, the mold is equipped with a mold temperature controller, which sets the first temperature to 55℃~65℃. The thermoplastic elastomer is TPE. The long side dimension of the soft rubber adsorption part is l, and the short side dimension is w, satisfying: 2<l / w≤4. The height dimension of the middle part of the convex arc surface protruding from the annular plane in the direction away from the adsorption body is 0.15mm~0.25mm. After cooling, the distance by which the trumpet-shaped curved surface is recessed relative to the annular plane in the direction close to the adsorption body is 0.05mm~0.2mm.

[0023] Additional aspects and advantages of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0024] The above and / or additional aspects and advantages of the present invention will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0025] Figure 1 This is a schematic diagram of the adsorption structure of the present invention in Embodiment 1;

[0026] Figure 2 for Figure 1 Schematic diagram of the structural breakdown of the embodiment;

[0027] Figure 3 This is a schematic diagram of the adsorption structure of Example 2 of the present invention;

[0028] Figure 4 This is a schematic diagram of the adsorption structure of Example 3 of the present invention;

[0029] Figure 5 A schematic diagram of the back of one embodiment of the adsorption body;

[0030] Figure 6 This is a schematic diagram illustrating the steps of molding a pre-deformed elastomer and cooling the pre-deformed elastomer into a soft adsorption component in the method for manufacturing the adsorption structure of the present invention. Detailed Implementation

[0031] Embodiments of the present invention 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 the present invention, and should not be construed as limiting the present invention.

[0032] In the description of this invention, it should be understood that the orientation descriptions, such as the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", and "outer", indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limiting this invention.

[0033] In the description of this invention, "several" means one or more, "more than" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0034] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0035] See Figure 1 and Figure 2 The adsorption body 100 of this embodiment of the invention is provided with a non-circular soft rubber adsorption member 200 and an exhaust hole 310 through the middle of the soft rubber adsorption member 200. The soft rubber adsorption member 200 has an adsorption surface 210 protruding from the adsorption body 100. The adsorption surface 210 includes an annular plane 211 extending inward along the outer periphery of the soft rubber adsorption member 200 and a trumpet-shaped curved surface 212 arranged circumferentially along the exhaust hole 310 and connected to the inner periphery of the annular plane 211. The trumpet-shaped curved surface 212 can gradually approach the adsorption body 100 in the direction of the inner periphery of the annular plane 211 pointing towards the exhaust hole 310. A first exhaust groove 320 extends along the long side of the soft rubber adsorption member 200, is located on the trumpet-shaped curved surface 212, and communicates with the exhaust hole 310.

[0036] When the above-constructed adsorption structure is installed on the surface to be installed, as the adsorption body 100 is pressed, the annular plane 211 first contacts the surface to be installed, and then the trumpet-shaped curved surface 212 gradually contacts the surface to be installed from the inner periphery of the annular plane 211 along the direction towards the exhaust hole 310, thereby gradually venting the gas between the adsorption surface 210 and the surface to be installed, reducing the air bubbles between the adsorption surface 210 and the surface to be installed. The outline shape of the non-circular soft rubber adsorption part 200 can be set according to the actual use needs, which is beneficial to increase the area of ​​the adsorption surface 210. The above adsorption structure has the advantages of stable adsorption and strong load-bearing capacity.

[0037] See Figure 2 In some embodiments of the present invention, the adsorption body 100 is provided with a rectangular mounting groove 110, and the soft adhesive adsorption component 200 is injection molded within the rectangular mounting groove 110. The first venting groove 320 extends along the length direction of the soft adhesive adsorption component 200 to communicate with the venting hole 310. It is understood that the rectangular mounting groove 110 provides the soft adhesive adsorption component 200 with an injection-molded mounting space, which helps to define the shape of the soft adhesive adsorption component 200 and prevent the soft adhesive adsorption component 200 from shifting relative to the adsorption body 100. The adsorption surface 210 protrudes entirely from the rectangular mounting groove 110. When the user applies pressure to the soft adhesive adsorption component 200 to fit the surface to be installed, the soft adhesive adsorption component 200 can generate a certain amount of elastic deformation to avoid direct collision between the adsorption body 100 and the surface to be installed. It should be noted that when the adsorption structure is installed on the surface to be installed, as the adsorption body 100 is pressed, the annular plane 211 first contacts the surface to be installed, and then the trumpet-shaped curved surface 212 gradually contacts the surface to be installed along its outer edge toward the center. The gas between the adsorption surface 210 and the surface to be installed moves along the end of the first exhaust groove 320 toward the exhaust hole 310, thereby guiding other gases to the exhaust hole 310 for discharge, improving the situation of air bubbles between the adsorption surface 210 and the surface to be installed. Moreover, the soft rubber adsorption component 200 is set as a rectangle, and the long side of the rectangular soft rubber adsorption component 200 is larger than the short side, which is suitable for cases where the adsorption body 100 is long, avoiding the use of multiple conventional circular adsorption components, making it more convenient to use. Additionally, it should be noted that the farthest distance between the outer contour edge of the non-circular soft adhesive adsorption component 200 and the geometric center of the soft adhesive adsorption component 200 is the long side dimension, and the shortest distance between the outer contour edge of the soft adhesive adsorption component 200 and the geometric center of the soft adhesive adsorption component 200 is the short side dimension.

[0038] Of course, in other embodiments, the outline shape of the soft adhesive adsorption member 200 can also be other shapes in which the long side dimension is greater than the short side dimension. For example, the outline shape of the soft adhesive adsorption member 200 is elliptical, the outline shape of the soft adhesive adsorption member 200 is an irregular strip, etc. The outline shape of the soft adhesive adsorption member 200 can be configured accordingly according to specific usage needs.

[0039] See Figure 2 In some embodiments of the present invention, the bottom wall of the rectangular mounting groove 110 is formed with a sleeve 120 passing through the geometric center of the soft adhesive adsorption component 200. The internal channel of the sleeve 120 forms an exhaust hole 310. The first exhaust groove 320 is located on the midline of the short side of the soft adhesive adsorption component 200, and the first exhaust groove 320 extends from both ends of the trumpet-shaped curved surface 212 along its length to the inlet of the exhaust hole 310. In this embodiment, the adsorption body 100, the rectangular mounting groove 110, and the sleeve 120 are formed by integral injection molding, which helps to simplify the production and processing flow of the adsorption structure. Generally, the adsorption body 100 is made of materials such as PP and PE, which have a fixed shape after molding. Compared with the soft adhesive adsorption component 200, the adsorption body 100 is not elastic. When the soft adhesive adsorption component 200 is injection molded into the rectangular mounting groove 110, the annular plane 211 is a rectangular ring, and the projection of the trumpet-shaped curved surface 212 in the direction perpendicular to the bottom wall of the rectangular mounting groove 110 is also a rectangular ring. The inner periphery of the trumpet-shaped curved surface 212 gradually approaches the bottom wall of the rectangular mounting groove 110 along the direction pointing to the exhaust hole 310.

[0040] See Figure 1 or Figure 3 In some embodiments of the present invention, the trumpet-shaped curved surface 212 is provided with a plurality of second exhaust grooves 330 intersecting with the first exhaust groove 320. One end of the second exhaust groove 330 is connected to the first exhaust groove 320, and the other end of the second exhaust groove 330 extends to the outer peripheral edge of the trumpet-shaped curved surface 212. It should be noted that the main function of the first exhaust groove 320 is to guide the gas near the center line of the short side of the soft adhesive adsorbent 200 to the exhaust hole 310. That is, the first exhaust groove 320 guides the gas out along the length direction of the soft adhesive adsorbent 200, but does not have a corresponding exhaust structure in the width direction of the soft adhesive adsorbent 200. The second exhaust groove 330 is able to guide the gas located at the edge of the long side of the soft adhesive adsorbent 200 to the first exhaust groove 320 for convergence, so that the gas between each position of the trumpet-shaped curved surface 212 and the surface to be installed can be easily guided to the exhaust hole 310 and discharged.

[0041] See Figure 1In some embodiments of the present invention, a plurality of second venting grooves 330 are arranged at intervals along the extending direction of the first venting groove 320, and an adhesive unit area is defined between two adjacent second venting grooves 330 and the first venting groove 320. Adjacent adhesive unit areas are connected by the outer peripheral edge of the trumpet-shaped curved surface 212. It is understood that the formation of multiple adhesive unit areas by the above structure helps to improve the cooling and curing rate of the soft adhesive adsorbent 200, and is beneficial to improving the stability of the shape of the adsorption surface 210 of the soft adhesive adsorbent 200 after shrinkage. When the length dimension of the rectangular soft adhesive adsorbent 200 is much larger than the width dimension of the soft adhesive adsorbent 200, the middle position of the trumpet-shaped curved surface 212 is not prone to a large degree of depression. Moreover, since adjacent adhesive unit areas are connected by the outer peripheral edge of the trumpet-shaped curved surface 212, the entire soft adhesive adsorbent 200 can be formed in one step using thermoplastic elastomer.

[0042] See Figure 1 In some embodiments of the present invention, a plurality of second exhaust grooves 330 are distributed on both sides of the first exhaust groove 320, and the second exhaust grooves 330 are orthogonal to the first exhaust groove 320 so that the second exhaust grooves 330 converge the gas to the first exhaust groove 320. The orthogonality between the second exhaust grooves 330 and the first exhaust groove 320 helps to shorten the path of gas from the outer peripheral edge of the adsorption surface 210 to the first exhaust groove 320, thereby improving the installation efficiency of the adsorption structure. Preferably, the adjacent second exhaust grooves 330 are evenly spaced, which helps to converge the gas between the various positions of the soft adhesive adsorption member 200 in the width direction and the surface to be installed to the first exhaust groove 320 and then discharge it from the exhaust hole 310.

[0043] See Figure 3 In some embodiments of the present invention, the end of the second exhaust groove 330 away from the first exhaust groove 320 is inclined in the direction away from the exhaust hole 310, that is, the end of the second exhaust groove 330 away from the first exhaust groove 320 can extend to the corner of the rectangular soft adhesive adsorption member 200, ensuring that the gas between the outer peripheral edge of the adsorption surface 210 and the surface to be installed can flow smoothly into the first exhaust groove 320 and then be discharged.

[0044] See Figure 4In some embodiments of the present invention, the trumpet-shaped curved surface 212 is further provided with a plurality of radially distributed third exhaust grooves 340. One end of each third exhaust groove 340 is connected to the exhaust hole 310, and the other end of each third exhaust groove 340 extends to the outer peripheral edge of the trumpet-shaped curved surface 212. It should be noted that during the process of the adsorption surface 210 being attached to the surface to be installed, the above exhaust structure utilizes the radially distributed plurality of third exhaust grooves 340 and first exhaust grooves 320 to quickly transport gas at different positions between the trumpet-shaped curved surface 212 and the surface to be installed to the exhaust hole 310, reducing air bubbles between the adsorption surface 210 and the surface to be installed, and improving the adsorption capacity of the adsorption structure.

[0045] The bottom wall of the first exhaust groove 320 protrudes above the inlet of the exhaust hole 310, ensuring that gas can smoothly enter the exhaust hole 310 along the first exhaust groove 320. It is understood that the adsorption surface 210 of the soft adhesive adsorption component 200, formed within the rectangular mounting groove 110, protrudes from the opening edge of the rectangular mounting groove 110 to prevent collision between the adsorption body 100 and the surface to be installed when the soft adhesive adsorption component 200 is pressed. Preferably, the height of the adsorption surface 210 protruding from the opening edge of the rectangular mounting groove 110 is h, satisfying: 1mm ≤ h ≤ 1.5mm; the groove width of the first exhaust groove 320 is 0.8mm to 1.2mm; and the depth of the first exhaust groove 320 is d, satisfying: 0.26mm ≤ d ≤ 0.4mm. When the first exhaust groove 320 meets the above groove width and depth dimensions, the adsorption structure has both good exhaust characteristics and ensures the area and adsorption force of the adsorption surface 210.

[0046] See Figure 5 In some embodiments of the present invention, the adsorption body 100 has a shaping rib 130 parallel to the rectangular mounting groove 110 on the back side of the rectangular mounting groove 110. It is understood that the shaping rib 130 helps to ensure that the bottom wall of the rectangular mounting groove 110 is flat, thereby ensuring the shape and size accuracy of the soft adhesive adsorption component 200 and the shape accuracy of the adsorption surface 210. The shaping rib 130 and the adsorption body 100 are integrally injection molded.

[0047] See Figure 5 Furthermore, in some embodiments of the present invention, the adsorption body 100 is provided with an insert slot 140 on the back side of the rectangular mounting groove 110, which is parallel to the length direction of the soft adhesive adsorption member 200. Correspondingly, the placement device has a plug that matches the insert slot 140. When the plug is inserted into the insert slot 140, the distance between the placement device and the adsorption surface 210 of the soft adhesive adsorption member 200 is shorter, that is, the gravitational torque of the placement device and the item acting on the adsorption structure is smaller, which is beneficial to enhance the load-bearing capacity of the adsorption structure.

[0048] See Figure 5 In some embodiments of the present invention, the adsorption body 100 has a first L-shaped rib 150 and a second L-shaped rib 160 parallel to and opposite to the first L-shaped rib 150 formed on the back side of the rectangular mounting groove 110. An insert slot 140 is defined between the first L-shaped rib 150 and the second L-shaped rib 160. A plug 400 for sealing the end of the insert slot 140 is mounted on the adsorption body 100. The first L-shaped rib 150 and the second L-shaped rib 160 are both formed by integral injection molding. The plug 400 is used to prevent the insert of the placement device from going beyond the required installation position when inserted into the insert slot 140.

[0049] Referring to Figure 6, the present invention also discloses a method for manufacturing the above-mentioned adsorption structure, comprising the following steps:

[0050] The adsorption body 100 and the exhaust hole 310 are obtained by injection molding.

[0051] The adsorption body 100 is placed in the mold 20 for secondary injection molding. The mold 20 has a first mold cavity for forming the soft rubber adsorption part 200. The first mold cavity has an arched surface 21. The arched surface 21 has forming ribs corresponding to the first venting groove 320. Molten thermoplastic elastomer is injected into the first mold cavity to form a pre-deformed elastomer 10. The pre-deformed elastomer 10 has an annular plane 11, a convex arc surface 12 connected to the inner periphery of the annular plane 11, and a strip groove formed on the convex arc surface 12. The convex arc surface 12 matches the arched surface 21. The outline edge of the convex arc surface 12 gradually moves away from the adsorption body 100 towards the center of the convex arc surface 12.

[0052] After cooling the mold 20 to a first temperature, the pre-deformed elastomer 10 is ejected, and then the pre-deformed elastomer 10 is cooled to room temperature so that the annular plane 11, the convex arc surface 12 and the strip groove shrink to form the annular plane 211, the trumpet-shaped curved surface 212 and the first venting groove 320, respectively.

[0053] It should be noted that, unlike the soft plastic adsorption component 200 with a circular outer contour, when the soft plastic adsorption component 200 has a non-circular contour and the long side dimension of the soft plastic adsorption component 200 is much larger than the short side dimension (for example, the length dimension of the rectangular soft plastic adsorption component 200 is 3 times the width dimension), the thermoplastic elastomer gradually cools from the contour edge towards the center after injection molding. Taking the rectangular soft plastic adsorption component 200 as an example, when any position in the width direction of the soft plastic adsorption component 200 has cooled to room temperature, multiple positions in the length direction of the soft plastic adsorption component 200 still have a high temperature and are in a softened state. As time goes on, the subsequently cooled and solidified positions will shrink and dent. Therefore, it is impossible to control the adsorption surface 210 within the preset shape and size range by using conventional methods to process it.

[0054] The method for manufacturing the adsorption structure of the present invention can solve the above-mentioned technical problems. By setting an arched surface 21 in the mold 20, the surface of the pre-deformed elastomer 10 is formed into a convex arc surface 12. After cooling, the convex arc surface 12 can be transformed into a concave trumpet-shaped curved surface 212. That is, the manufacturing method compensates for the shrinkage of the soft rubber adsorption part 200 after cooling by pre-forming a certain arched size, so that the curvature of the trumpet-shaped curved surface 212 reaches the preset condition, thereby ensuring that the adsorption structure has a good adsorption capacity.

[0055] In some embodiments of the present invention, the mold 20 is equipped with a mold temperature controller, which sets the first temperature to 55℃~65℃, the injection temperature of the molten thermoplastic elastomer to 130℃~160℃, the injection pressure to 45MPa~85MPa, the injection speed to 25m / s~35m / s, the holding pressure of the mold 20 to 70MPa~80MPa, the holding time to 5m / s~7m / s, the thermoplastic elastomer to be TPE, the length of the soft adhesive adsorbent 200 to be l, the width to be w, satisfying: 2<l / w≤4, the height of the middle part of the convex arc surface 12 protruding from the annular plane 11 in the direction away from the bottom wall of the rectangular mounting groove 110 to be 0.15mm~0.25mm, and after cooling, the rectangular annular curved surface 212 is recessed relative to the rectangular annular plane 211 by a distance of 0.05mm~0.2mm in the direction close to the bottom wall of the rectangular mounting groove 110.

[0056] It should be noted that if the first temperature is too low, the shrinkage of the pre-deformed elastomer 10 after ejection when cooling to room temperature is very small, resulting in the convex arc surface 12 failing to shrink and form the pre-set trumpet-shaped curved surface 212. If the first temperature is too high, the shrinkage of the pre-deformed elastomer 10 after ejection when cooling to room temperature is large, resulting in the curvature of the trumpet-shaped curved surface 212 formed by the convex arc surface 12 being too large, and thus unable to adsorb and fix well with the surface to be installed. In addition, the injection temperature, injection pressure, holding pressure of the mold 20, and holding time will also have corresponding effects on the molding of the soft rubber adsorption part 200. Through experiments, the pre-deformed elastomer 10 obtained using the above processing conditions can form the pre-set annular plane 211 and trumpet-shaped curved surface 212 after cooling. When the value of l / w is large, that is, the length dimension of the soft rubber adsorption component 200 is much larger than the width dimension, the height dimension of the middle part of the convex arc surface 12 protruding from the annular plane 11 in the direction away from the adsorption body 100 increases accordingly; when the value of l / w is small, the height dimension of the middle part of the convex arc surface 12 protruding from the annular plane 11 in the direction away from the adsorption body 100 decreases accordingly, thereby satisfying the distance requirement of the trumpet-shaped curved surface 212 being concave relative to the annular plane 11.

[0057] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0058] Although embodiments of the invention have been shown and described, those skilled in the art will understand that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims

1. An adsorbing structure, characterized by, The application relates to an adsorption structure, which comprises the following: an adsorption body (100) provided with a non-circular soft rubber adsorption member (200) and an exhaust hole (310) penetrating through the middle of the soft rubber adsorption member (200), wherein the soft rubber adsorption member (200) has an adsorption surface (210) protruding from the adsorption body (100); the adsorption surface (210) comprises an annular plane (211) extending inward along the outer periphery of the soft rubber adsorption member (200) and a horn-shaped curved surface (212) arranged along the circumference of the exhaust hole (310) and connected with the inner periphery of the annular plane (211), and the horn-shaped curved surface (212) can gradually approach the adsorption body (100) in the direction of the inner periphery of the annular plane (211) pointing to the exhaust hole (310); a first exhaust groove (320) is arranged in the direction of the long side of the soft rubber adsorption member (200) and is located on the horn-shaped curved surface (212) and is connected with the exhaust hole (310); a plurality of second exhaust grooves (330) intersecting with the first exhaust groove (320) are arranged on the horn-shaped curved surface (212), one end of the second exhaust groove (330) is connected with the first exhaust groove (320), and the other end of the second exhaust groove (330) extends to the outer periphery of the horn-shaped curved surface (212); or a plurality of third exhaust grooves (340) distributed in a radial manner are arranged on the horn-shaped curved surface (212), one end of the third exhaust groove (340) is connected with the exhaust hole (310), and the other end of the third exhaust groove (340) extends to the outer periphery of the horn-shaped curved surface (212).

2. The adsorption structure according to claim 1, wherein: a plurality of the second exhaust grooves (330) are arranged at intervals in the extension direction of the first exhaust groove (320), and adjacent two second exhaust grooves (330) and the first exhaust groove (320) define a sticking unit area, and adjacent sticking unit areas are connected through the outer periphery of the horn-shaped curved surface (212).

3. The adsorption structure according to claim 2, wherein: a plurality of the second exhaust grooves (330) are distributed on both sides of the first exhaust groove (320), and the second exhaust grooves (330) are perpendicular to the first exhaust groove (320) so that the second exhaust grooves (330) converge gas to the first exhaust groove (320).

4. The adsorption structure according to claim 2, wherein: one end of the second exhaust groove (330) far away from the first exhaust groove (320) is arranged in a direction away from the exhaust hole (310).

5. A method of manufacturing an adsorbing structure for manufacturing an adsorbing structure according to any one of claims 1 to 4, characterized in that, The application further discloses a manufacturing method of the adsorption structure, which comprises the following steps: the adsorption body (100) and the exhaust hole (310) are obtained through injection molding. The adsorption body (100) is put into a mold (20) for secondary injection molding, the mold (20) is internally provided with a first mold cavity for molding the soft rubber adsorption accessory (200), the first mold cavity has an arch surface (21), the arch surface (21) is provided with a molding convex rib corresponding to the first exhaust groove (320), the first mold cavity is filled with molten thermoplastic elastomer to form a pre-deformation elastomer (10), the pre-deformation elastomer (10) has an annular plane (11), a convex arc surface (12) connected with the inner circumferential edge of the annular plane (11), and a strip-shaped groove formed on the convex arc surface (12), the convex arc surface (12) matches the arch surface (21), and the profile edge of the convex arc surface (12) gradually deviates from the middle part of the convex arc surface (12) away from the adsorption body (100); After the mold (20) is cooled to a first temperature, the pre-deformation elastomer (10) is ejected, and then the pre-deformation elastomer (10) is cooled to room temperature to make the annular plane (11), the convex arc surface (12) and the strip-shaped groove respectively shrink to form the annular plane (211), the horn-shaped curved surface (212) and the first exhaust groove (320).

6. The method for manufacturing an adsorption structure according to claim 5, wherein: The mold (20) is provided with a mold temperature machine, the mold temperature machine sets the first temperature to 55-65℃, the thermoplastic elastomer is TPE, the long side dimension of the soft rubber adsorption accessory (200) is l and the short side dimension is w, and 2

Images