Low pressure release type self-adsorption box

Abstract

The present disclosure relates to the technical field of electronic component carriers, and specifically to a low-pressure release type self-adsorption box. The vacuum release type self-adsorption box comprises a box body, an adsorption assembly and a gas extraction assembly. The box body is provided with a first mounting cavity and a second mounting cavity. The self-adsorption box comprises a self-adsorption film and a plurality of support columns. The self-adsorption film is arranged in the first mounting cavity and forms an adsorption space in the first mounting cavity. A plurality of support columns are arranged in the adsorption space at intervals to support the self-adsorption film. The side of the self-adsorption film away from the support columns is used for adsorbing the adsorption component. The gas extraction assembly is arranged in the second mounting cavity. The second mounting cavity and the adsorption space are communicated. When the gas extraction assembly extracts gas, the self-adsorption film is partially embedded in the gap between the support columns.

Description

Technical Field

[0001] This disclosure relates to the field of electronic component carrier technology, and more specifically, to a low-pressure release type self-adhesive box. Background Technology

[0002] With the development and advancement of technology, the application of surface-mount electronic components (SMDs), chips, and ceramic wafers is becoming increasingly widespread. After manufacturing, these SMDs often require transportation or storage. During transportation and storage, SMDs are easily damaged or contaminated.

[0003] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this disclosure, and therefore may include information that does not constitute prior art known to those skilled in the art. Summary of the Invention

[0004] The purpose of this disclosure is to provide a low-pressure release type self-adsorption box, thereby protecting components to at least a certain extent and preventing damage to electronic components during transportation or storage.

[0005] This disclosure provides a low-pressure release type self-adsorption box, the low-pressure release type self-adsorption box comprising:

[0006] The box body has a first mounting cavity and a second mounting cavity inside it;

[0007] An adsorption assembly includes a self-adsorption membrane and a plurality of support columns. The self-adsorption membrane is disposed in a first mounting cavity and forms an adsorption space within the first mounting cavity. The plurality of support columns are spaced apart in the adsorption space to support the self-adsorption membrane. The side of the self-adsorption membrane facing away from the support columns is used to adsorb the object to be adsorbed.

[0008] An air extraction assembly is disposed in the second mounting cavity, which is connected to the adsorption space. When the air extraction assembly extracts air, the self-adsorption membrane is partially embedded in the gap between the support columns.

[0009] According to one embodiment of this disclosure, the box body includes:

[0010] A motherboard, wherein a first mounting cavity is provided on the motherboard, and the first mounting cavity has an opening on the top surface of the motherboard;

[0011] An air extraction block is disposed at the bottom of the motherboard, and an air passage is provided in the air extraction block, which is connected to the first mounting cavity.

[0012] A piston seat, wherein a second mounting cavity is provided inside the piston seat, and the second mounting cavity is connected to the air passage.

[0013] According to one embodiment of this disclosure, the piston seat is disposed on the side of the suction block, and the piston seat is provided with a first balance hole communicating with the second mounting cavity, and a sealing plug is installed in the first balance hole.

[0014] According to one embodiment of this disclosure, the piston seat is located on the side of the suction block away from the main board, and the main board is provided with a second balance hole communicating with the air passage, and a sealing plug is provided in the second balance hole.

[0015] According to one embodiment of the present disclosure, the first mounting cavity includes a first hole segment and a second hole segment. The second hole segment is located at one end of the first hole segment near the top surface of the motherboard. The cross-sectional area of ​​the first hole segment is smaller than the cross-sectional area of ​​the second hole segment to form a stepped first mounting cavity. The self-adhesive membrane is connected to the bottom surface of the second hole segment.

[0016] According to one embodiment of this disclosure, the air extraction assembly is a self-locking piston.

[0017] According to one embodiment of this disclosure, the self-locking piston includes:

[0018] Piston cylinder;

[0019] A piston rod is disposed inside the piston cylinder, and a piston head is provided at the end of the piston rod. The maximum static friction force between the piston head and the piston cylinder is greater than a preset threshold.

[0020] According to one embodiment of this disclosure, the self-adsorption membrane is a flexible membrane.

[0021] According to one embodiment of this disclosure, the box body, the adsorption assembly, and the air extraction assembly are provided with electrostatic dissipation coatings; and / or

[0022] The box body, the adsorption component, and the air extraction component are made of electrostatic dissipative materials.

[0023] According to one embodiment of this disclosure, the low-pressure release type self-adsorption box further includes:

[0024] A lid is provided on the box body and is used to protect the self-adsorption membrane and the object to be adsorbed.

[0025] The low-pressure release self-adsorption box provided in this embodiment includes a box body, an adsorption component, and a vacuum component. The box body has a first mounting cavity and a second mounting cavity. The adsorption component includes a self-adsorption membrane and multiple support pillars. The self-adsorption membrane is disposed in the first mounting cavity and forms an adsorption space within it. The multiple support pillars are spaced apart in the adsorption space to support the self-adsorption membrane. The side of the self-adsorption membrane facing away from the support pillars is used to adsorb the object to be adsorbed. The vacuum component is disposed in the second mounting cavity, which is connected to the adsorption space. When the vacuum component vacuums, the self-adsorption membrane is partially embedded in the gaps between the support pillars. By adsorbing the object to be adsorbed through the self-adsorption membrane disposed within the box body, damage to the object to be adsorbed can be avoided during transportation or storage, thus protecting the object. Furthermore, by vacuuming the gas in the vacuum space, the self-adsorption membrane is partially embedded in the gaps between the support pillars, reducing the suction force between the self-adsorption membrane and the object to be adsorbed, improving the convenience of removing the object from the self-adsorption membrane, preventing damage to the workpiece during removal, and increasing the efficiency of workpiece removal.

[0026] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and are not intended to limit this disclosure. Attached Figure Description

[0027] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this disclosure and, together with the description, serve to explain the principles of this disclosure. It is obvious that the drawings described below are merely some embodiments of this disclosure, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort.

[0028] Figure 1 A schematic diagram of a self-adhesive box assembly provided for an exemplary embodiment of this disclosure;

[0029] Figure 2 An exploded view of a self-adhesive box assembly provided as an exemplary embodiment of this disclosure;

[0030] Figure 3 A schematic diagram of the adsorption state of a self-adsorption membrane provided as an exemplary embodiment of this disclosure;

[0031] Figure 4 A schematic diagram of a self-adsorption membrane retraction provided for an exemplary embodiment of this disclosure;

[0032] Figure 5 A schematic diagram of another self-adhesive box assembly provided as an exemplary embodiment of this disclosure;

[0033] Figure 6 An exploded view of another self-adhesive box assembly provided as an exemplary embodiment of this disclosure;

[0034] Figure 7 A schematic diagram of gas flow direction during evacuation, provided as an exemplary embodiment of this disclosure;

[0035] Figure 8 A schematic diagram of gas flow direction during release, provided as an exemplary embodiment of this disclosure;

[0036] Figure 9 A schematic diagram of an air extraction assembly provided for an exemplary embodiment of this disclosure;

[0037] Figure 10 A schematic diagram of another air extraction assembly provided for an exemplary embodiment of this disclosure;

[0038] Figure 11 A schematic diagram of a piston cylinder provided for an exemplary embodiment of this disclosure.

[0039] Explanation of reference numerals in the attached figures:

[0040] 10. Box body; 11. Main board; 12. Vacuum block; 13. Piston seat; 14. Sealing plug; 20. Adsorption assembly; 21. Self-adsorption membrane; 22. Support column; 30. Vacuum assembly; 31. Piston cylinder; 311. Piston chamber; 32. Piston rod; 33. Piston head; 01. Item to be adsorbed. Detailed Implementation

[0041] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in many forms and should not be construed as limited to the examples set forth herein; rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the example embodiments to those skilled in the art. The described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. In the following description, numerous specific details are provided to give a full understanding of embodiments of this disclosure. However, those skilled in the art will recognize that the technical solutions of this disclosure can be practiced without one or more of the specific details described, or other methods, materials, apparatus, etc., can be employed. In other instances, well-known technical solutions are not shown or described in detail to avoid obscuring various aspects of this disclosure.

[0042] Furthermore, the accompanying drawings are merely illustrative of this disclosure and are not necessarily drawn to scale. The same reference numerals in the drawings denote the same or similar parts, and therefore repeated descriptions of them will be omitted. The terms "a" and "the" are used to indicate the presence of one or more elements; the terms "including" and "having" are used to indicate an open-ended inclusion and that additional elements may exist in addition to those listed.

[0043] An exemplary embodiment of this disclosure provides a low-pressure release type self-adsorption box, such as Figure 1 and Figure 2 As shown, the low-pressure release type self-adsorption box includes: a box body 10, an adsorption component 20, and an air extraction component 30. The box body 10 has a first mounting cavity and a second mounting cavity. Figure 3 and Figure 4 As shown, the adsorption assembly 20 includes a self-adsorption membrane 21 and a plurality of support columns 22. The self-adsorption membrane 21 is disposed in the first mounting cavity and forms an adsorption space in the first mounting cavity. The plurality of support columns 22 are spaced apart in the adsorption space to support the self-adsorption membrane 21. The side of the self-adsorption membrane 21 facing away from the support columns 22 is used to adsorb the object to be adsorbed 01. The air extraction assembly 30 is disposed in the second mounting cavity, which is connected to the adsorption space. When the air extraction assembly 30 extracts air, the self-adsorption membrane 21 is partially embedded in the gap between the support columns 22.

[0044] The low-pressure release self-adsorption box provided in this embodiment includes a box body 10, an adsorption component 20, and an air extraction component 30. The box body 10 has a first mounting cavity and a second mounting cavity. The adsorption component 20 includes a self-adsorption membrane 21 and a plurality of support columns 22. The self-adsorption membrane 21 is disposed in the first mounting cavity and forms an adsorption space in the first mounting cavity. The plurality of support columns 22 are spaced apart in the adsorption space to support the self-adsorption membrane 21. The side of the self-adsorption membrane 21 facing away from the support columns 22 is used to adsorb the object to be adsorbed 01. The air extraction component 30 is disposed in the second mounting cavity, and the second mounting cavity is connected to the adsorption space. When the air extraction component 30 extracts air, the self-adsorption membrane 21 is partially embedded in the gap between the support columns 22. The self-adsorption membrane 21 located inside the box body 10 adsorbs the workpiece 01 to be adsorbed, which can prevent damage to the workpiece 01 during transportation or storage and achieve protection of the workpiece 01. Furthermore, the gas in the suction space is extracted by the suction component 30, so that the self-adsorption membrane 21 is partially embedded in the gap between the support columns 22, reducing the suction force between the self-adsorption membrane 21 and the workpiece 01 to be adsorbed, improving the convenience of removing the workpiece 01 from the self-adsorption membrane 21, avoiding damage to the workpiece during the removal process, and improving the removal efficiency of the workpiece.

[0045] The following will describe in detail the various parts of the low-pressure release type self-adsorption box provided in the embodiments of this disclosure:

[0046] The main body 10 includes a main board 11, an air extraction block 12, and a piston seat 13. The main board 11 has a first mounting cavity with an opening on its top surface. The air extraction block 12 is located at the bottom of the main board 11 and has an air passage that communicates with the first mounting cavity. The piston seat 13 has a second mounting cavity that communicates with the air passage.

[0047] The motherboard 11 can have a cuboid or near-cuboid structure, and the shape of the first mounting cavity matches the shape of the motherboard 11. The first mounting cavity can be a cuboid or near-cuboid blind hole disposed on the motherboard 11, and the first mounting cavity has an opening on the top surface of the motherboard 11. Of course, in practical applications, the motherboard 11 can also be other shapes, such as a cylinder, etc., and the embodiments disclosed herein are not limited thereto.

[0048] The first mounting cavity includes a first hole segment and a second hole segment. The second hole segment is located at one end of the first hole segment near the top surface of the motherboard 11. The cross-sectional area of ​​the first hole segment is smaller than that of the second hole segment to form a stepped first mounting cavity. The self-adhesive membrane 21 is connected to the bottom surface of the second hole segment. The first hole segment is used to accommodate the support post 22, and the second hole segment is used to accommodate the self-adhesive membrane 21.

[0049] The self-adsorption membrane 21 and the bottom wall of the second pore section are sealed together to form a closed suction space. Multiple vent holes are provided on the bottom wall of the first mounting hole, which are used to communicate with the air passages on the suction block 12. For example, when the first mounting hole has a cuboid structure, four vent holes are provided on the bottom wall of the first mounting hole, with each of the four vent holes located at one of the four vertices of the rectangle.

[0050] Multiple support columns 22 are discretely arranged in the air intake space. When the air extraction component 30 extracts air, the pressure in the air intake space is less than atmospheric pressure. At this time, under the action of atmospheric pressure, the part of the self-adsorption membrane 21 outside the support columns 22 is concave downward, thereby reducing the contact area between the self-adsorption membrane 21 and the object to be adsorbed 01, reducing the suction force of the self-adsorption membrane 21 on the object to be adsorbed 01, thus making it easier to remove the object to be adsorbed 01 from the low-pressure release type self-adsorption box and avoiding damage to the object to be adsorbed 01.

[0051] Multiple support pillars 22 can be directly installed at the bottom of the first mounting cavity. For example, multiple support pillars 22 can be connected to the bottom of the first mounting cavity by adhesive bonding, or multiple support pillars 22 can be integrally molded with the motherboard 11 by injection molding or other methods. The surface of the support pillars 22 has a flexible layer, or the support pillars 22 are made of flexible materials to avoid the support pillars 22 damaging the adsorbed component 01.

[0052] It is understandable that multiple support columns 22 can be installed on the base, which is located at the bottom of the first mounting cavity. The multiple support columns 22 are arranged in a topological structure composed of basic shapes such as rectangles, circles, and triangles, so as to support various shapes and sizes of adsorbed objects 01 during vacuum release.

[0053] The suction block 12 is located at the bottom of the main board 11. The air passage on the suction block 12 has an opening on the top surface of the suction block 12, and the orthographic projection of the vent hole on the suction block 12 at least partially coincides with the opening of the air passage. An air inlet is provided on the side of the suction block 12 facing the piston seat 13, and the air inlet is connected to the connecting hole on the piston seat 13.

[0054] In this embodiment, the vacuum block 12 and the main board 11 can be separate molding structures, and the vacuum block 12 and the main board 11 are sealed together. For example, a sealing ring can be provided between the vacuum block 12 and the main board 11, or a sealant layer can be applied between the vacuum block 12 and the main board 11. Of course, in practical applications, the vacuum block 12 and the main board 11 can also be integral molding structures, and this embodiment is not limited thereto.

[0055] A second mounting cavity is provided inside the piston seat 13, and the second mounting cavity is connected to the air passage. The air extraction assembly 30 is located in the second mounting cavity. When the air extraction assembly 30 extracts air, it draws out the air in the air passage connected to the second mounting cavity. As the air extraction assembly 30 continuously extracts air, the air pressure in the air passage and the adsorption space decreases, and a pressure difference is generated between the upper and lower surfaces of the self-adsorption membrane 21. The air pressure on the upper surface of the self-adsorption membrane 21 is greater than the air pressure on the lower surface. Under the action of the pressure difference, the self-adsorption membrane 21 deforms, and the part of the self-adsorption membrane 21 not supported by the support column 22 is concave downward.

[0056] In one feasible implementation, such as Figure 1 and Figure 2 As shown, the low-pressure release type self-adsorption box is a side-mounted adsorption box. The piston seat 13 is located on the side of the suction block 12, and the piston seat 13 is provided with a first balance hole communicating with the second mounting cavity. A sealing plug 14 is installed in the first balance hole.

[0057] When it is necessary to balance the pressure difference between the upper and lower surfaces of the self-adsorption membrane 21, the sealing plug 14 in the first balancing hole is removed. Air enters the second mounting cavity through the first balancing hole and then enters the adsorption space through the air passage, thereby achieving the balance of the pressure difference between the upper and lower surfaces of the self-adsorption membrane 21.

[0058] The piston seat 13 is located on the side of the suction block 12, and the piston seat 13 and the suction block 12 are sealed together. For example, the piston seat 13 and the suction block 12 can be integrally formed; or the piston seat 13 and the suction block 12 can be separately formed, and a seal (such as a sealing ring or a sealing adhesive layer) is provided between the side of the piston seat 13 and the side of the suction block 12.

[0059] A second mounting cavity is provided inside the piston seat 13. An opening is provided at the end of the second mounting cavity opposite to the suction block 12, through which the suction assembly 30 can enter the second mounting cavity. A first balance hole is located on the top surface of the piston seat 13; that is, the sealing plug 14 is installed on the top surface of the piston seat 13. Installing the sealing plug 14 on the top surface of the piston seat 13 facilitates its installation and removal.

[0060] In another feasible implementation, such as Figure 5 and Figure 6 As shown, the low-pressure release type self-adsorption box is a bottom-mounted adsorption box. The piston seat 13 is located on the side of the suction block 12 away from the main board 11 (the piston seat 13 is located at the bottom of the suction block 12). The main board 11 is provided with a second balance hole that communicates with the air passage, and a sealing plug 14 is provided in the second balance hole.

[0061] When it is necessary to balance the pressure difference between the upper and lower surfaces of the self-adsorption membrane 21, the sealing plug 14 in the second balancing hole is removed. Air enters the second mounting cavity through the second balancing hole and then enters the adsorption space through the air passage, thereby achieving the balance of the pressure difference between the upper and lower surfaces of the self-adsorption membrane 21.

[0062] The piston seat 13 is located at the bottom of the suction block 12, and the piston seat 13 and the suction block 12 are sealed together. For example, the piston seat 13 and the suction block 12 can be integrally formed; or the piston seat 13 and the suction block 12 can be separately formed, and a sealing element (such as a sealing ring or a sealing adhesive layer) is provided between the top surface of the piston seat 13 and the bottom surface of the suction block 12.

[0063] A second mounting cavity is provided inside the piston seat 13, which extends through one side of the piston seat 13 (the side of the piston seat 13 has an opening), through which the suction assembly 30 can enter the second mounting cavity. The second balance hole can be provided on the top surface of the main board 11, for example, the second balance hole can be provided on the top edge of the main board 11.

[0064] The vacuum assembly 30 is a self-locking piston. For example, as shown... Figure 9 and Figure 10 The self-locking piston includes a piston cylinder 31 and a piston rod 32. The piston rod 32 is located inside the piston cylinder 31, and a piston head 33 is provided at the end of the piston rod 32. The maximum static friction force between the piston head 33 and the piston cylinder 31 is greater than a preset threshold.

[0065] The inner wall roughness of the piston cylinder 31 ranges from Ra50 to Ra0.8. The piston head 33 can be made of an elastic material, such as rubber. The piston head 33 has a first state and a second state. The first state is the initial state, and the second state is the compressed state, meaning that the size in the second state is smaller than the size in the first state. In the second state, the size of the piston head 33 matches the internal size of the piston cylinder 31. When the piston rod 32 is installed inside the piston cylinder 31, the piston head 33 is pressed against the piston cylinder 31, switching from the first state to the second state. The inner walls of the piston head 33 and the piston cylinder 31 press against each other, causing the maximum static friction between the piston head 33 and the piston cylinder 31 to exceed a preset threshold. This preset threshold of maximum static friction can resist the rebound force of the piston rod 32 after pumping out air, thereby achieving piston self-locking.

[0066] The piston head 33 can be formed by at least one rubber ridge; for example, the number of rubber ridges in the piston head 33 can be one, two, three, or five. The rubber ridge surrounds the piston head 33, and the cross-section of the rubber ridge can be triangular or trapezoidal. The rubber ridge is elastic, and when the piston rod 32 is located inside the piston cylinder 31, the rubber ridge is compressed. The piston cylinder 31 can be connected to the vacuum block 12 through a connecting pipe.

[0067] In some embodiments, low-pressure release self-adsorption boxes often need to be stacked during storage and transportation. To facilitate the stacking of multiple low-pressure release self-adsorption boxes, the low-pressure release self-adsorption boxes can have a cuboid or approximately cuboid structure. Based on this, the main board 11, the suction block 12, the piston seat 13, and the suction assembly 30 are all in the form of a cuboid or approximately cuboid structure.

[0068] For example, such as Figure 11 As shown, the piston chamber 311 inside the piston cylinder 31 is a rectangular cavity with rounded corners. The longitudinal section of the piston chamber 311 is a rounded rectangle, and the longitudinal section is a surface perpendicular to the piston's direction of movement. The length of this rounded rectangle ranges from 3mm to 100mm, and the width ranges from 1mm to 20mm.

[0069] Based on this, the longitudinal section of the piston head 33 is also a rounded rectangular structure. By setting the piston chamber 311 as a cuboid structure, the space utilization rate within the piston seat 13 is improved, the piston stroke is reduced, the overall compactness of the equipment is enhanced, and the piston can extract as much gas as possible within a certain stroke, thereby improving working efficiency.

[0070] In one feasible embodiment of this disclosure, an electrostatic dissipative coating is provided on the box body 10, the adsorption component 20, and the air extraction component 30. The sheet resistance of the material used in the electrostatic dissipative coating is 10⁻⁶. 4 Ω~10 10Ω. By providing an electrostatic dissipation coating on the box body 10, the adsorption component 20 and the air extraction component 30, the low-pressure release self-adsorption box has an electrostatic dissipation function, thereby preventing electrostatic damage to the adsorbed part 01 in the low-pressure release self-adsorption box.

[0071] In another feasible embodiment, the box body 10, the adsorption component 20, and the air extraction component 30 are made of an electrostatic dissipative material. The sheet resistance of the electrostatic dissipative material is 10 ohms. 4 ~10 10 Ω. By making the box body 10, the adsorption component 20 and the air extraction component 30 with electrostatic dissipation material, the low-pressure release self-adsorption box has electrostatic dissipation function, thereby avoiding electrostatic damage to the adsorbed part 01 in the low-pressure release self-adsorption box.

[0072] It is understandable that some components of the box body 10, the adsorption component 20, and the air extraction component 30 are made of electrostatic dissipative materials, while other components of the box body 10, the adsorption component 20, and the air extraction component 30 are covered with an electrostatic dissipative coating.

[0073] The self-adsorption membrane 21 is a flexible membrane, capable of deforming when the pressure on both sides is different. The self-adsorption membrane 21 can automatically adsorb the component 01 to be adsorbed through vacuum adsorption or bonding. The component 01 to be adsorbed can be a surface-mount device, a chip, or a ceramic sheet, etc.

[0074] When the self-adsorption membrane 21 adsorbs the object to be adsorbed 01, the air pressure on both sides of the self-adsorption membrane 21 is the same, and the self-adsorption membrane 21 has a planar or nearly planar structure, resulting in a large contact area between the self-adsorption membrane 21 and the object to be adsorbed 01. When it is necessary to remove the object to be adsorbed 01, the suction space is evacuated by the suction assembly 30, causing the self-adsorption membrane 21 to deform, such as... Figure 10 As shown, the contact area between the self-adsorption membrane 21 and the adsorbent 01 is reduced, thereby reducing the adsorption force between the self-adsorption membrane 21 and the adsorbent 01, making it easier to remove the adsorbent 01.

[0075] The lid is located on the box body 10 and is used to protect the self-adhesive film 21 and the object to be adsorbed 01. The lid and the box body 10 can be connected by snap-fit ​​or by hinge.

[0076] In one feasible embodiment, the preparation method of the low-pressure release type self-adsorption box (side-mounted) provided in this disclosure is as follows:

[0077] Preparation of main board 11, vacuum block 12 and piston seat 13: Using ABS (acrylonitrile, butadiene and styrene terpolymer) material, the main board 11, vacuum block 12 and side-mounted piston seat 13 are prepared by secondary injection molding and the three are connected as one unit; at the same time, the sealing plug 14 is prepared by casting and the first balance hole is blocked.

[0078] Preparation of the vacuum assembly 30 (rounded rectangular self-locking piston): First, using ABS material, the piston cylinder 31 and piston rod 32 are prepared by injection molding. Then, the piston head 33 (rubber ridge) of silicone material is prepared and embedded on the skeleton by mold casting. Then, a small amount of dimethyl silicone oil is applied to the inner surface of the cylinder wall, and the piston rod 32 is inserted into the piston cylinder 31.

[0079] Connect the self-locking piston to the piston seat 13: Place the self-locking piston into the piston seat 13, and connect and seal the piston vent to the vent of the piston seat 13 through a hose.

[0080] Preparation of self-adsorption membrane 21 and support column 22: Self-adsorption membrane 21 is prepared by casting using modified PDMS (polydimethylsiloxane) material, and the membrane surface is adhesive; at the same time, support column 22 is prepared by casting using food-grade silicone. Then, self-adsorption membrane 21 and support column 22 are placed at the bottom of the first mounting cavity of motherboard 11. Self-adsorption membrane 21 automatically adheres to the motherboard 11 and is in a flat state; at this time, the low-pressure release type self-adsorption box has formed a complete and sealed internal space, and the internal air pressure can be adjusted by sealing plug 14 and self-locking piston.

[0081] Preparation of the lid: The lid is made of PMMA (polymethyl methacrylate) material by injection molding and then assembled onto the adsorption box. The preparation is now complete.

[0082] In another feasible embodiment, the preparation method of the low-pressure release type self-adsorption box (bottom-mounted type) provided in this disclosure is as follows:

[0083] Fabrication of main board 11, vacuum block 12, and piston seat 13: Modified ABS composite material (sheet resistance 10) was used. 9 ~10 10 Ω), through a two-stage injection molding process, the main board 11, the vacuum block 12, and the bottom-mounted piston seat 13 are prepared and connected as a single unit; at the same time, modified silicone (sheet resistance of 10) is used. 9 ~10 10 Ω) The balance port sealing plug 14 is prepared by casting and the second balance hole is blocked.

[0084] Fabrication of a rounded rectangular self-locking piston: First, a modified ABS composite material (sheet resistance of 10) is used. 9 ~10 10Piston cylinder 31 and piston rod 32 are prepared by injection molding, and then modified silicone (sheet resistance of 10Ω) is prepared and embedded in the skeleton by mold casting. 9 ~10 10 A piston head 33 (rubber edge) made of Ω material is used; then a small amount of dimethyl silicone oil is applied to the inner surface of the piston cylinder 31, and the piston rod 32 is inserted into the piston cylinder 31.

[0085] Connect the self-locking piston to the piston seat 13: Place the self-locking piston into the piston seat 13, and connect and seal the vent of the self-locking piston to the vent of the piston seat 13 through a hose (with an electrostatic dissipative coating on the surface).

[0086] Preparation of self-adsorption membrane 21 and support column 22: Modified PDMS material (sheet resistance of 10) was used. 7 ~10 10 A self-adsorption membrane 21 was prepared by casting, and the surface of the self-adsorption membrane 21 was adhesive; at the same time, modified silica gel (sheet resistance of 10) was used. 9 ~10 10 Ω) The support column 22 is prepared by mold casting method. Then the self-adsorption membrane 21 and the support column 22 are placed at the bottom of the flat groove of the main board 11. The self-adsorption membrane 21 automatically adheres to the main board 11 and the self-adsorption membrane 21 is in a flat state. At this time, the low-pressure release type self-adsorption box has formed a complete and sealed internal space. The internal air pressure can be adjusted by the sealing plug 14 and the self-locking piston.

[0087] The lid was made of modified PMMA composite material (sheet resistance 10). 9 ~10 10 The lid is prepared by casting and then assembled onto the body 10, thus completing the preparation process.

[0088] The method of using the low-pressure release type self-adsorption box provided in this embodiment is as follows: When it is necessary to store the workpiece 01 to be adsorbed, first remove the sealing plug 14 to balance the pressure on the upper and lower surfaces of the self-adsorption membrane 21, making the self-adsorption membrane 21 flat; place the workpiece 01 to be adsorbed on the self-adsorption membrane 21, ensuring that the bottom surface of the workpiece is completely attached to the self-adsorption membrane 21 and will not move or fall off, then close the box lid to prevent dust. When it is necessary to remove the workpiece to be adsorbed, such as... Figure 7 As shown, first, the balance hole (first balance hole or second balance hole) is sealed with the sealing plug 14. Then, the piston rod 32 is pulled to evacuate the air, significantly reducing the internal air pressure. The self-adsorption membrane 21 bends and deforms. At this time, only a small area of ​​the bottom surface of the workpiece to be adsorbed is in contact with the membrane. After releasing the piston rod 32, the piston can self-lock, and the internal low pressure can remain constant. Then, the workpiece to be adsorbed is removed. Figure 8As shown, after the operation is completed, first pull out the sealing plug 14, and air will automatically enter the box from the balance hole (first balance hole or second balance hole). The internal air pressure will be restored to atmospheric pressure, and the self-adsorption membrane 21 will be deformed back into a flat shape. Then push the piston rod 32 to reset it.

[0089] The low-pressure release self-adsorption box provided in this embodiment includes a box body 10, an adsorption component 20, and an air extraction component 30. The box body 10 has a first mounting cavity and a second mounting cavity. The adsorption component 20 includes a self-adsorption membrane 21 and a plurality of support columns 22. The self-adsorption membrane 21 is disposed in the first mounting cavity and forms an adsorption space in the first mounting cavity. The plurality of support columns 22 are spaced apart in the adsorption space to support the self-adsorption membrane 21. The side of the self-adsorption membrane 21 facing away from the support columns 22 is used to adsorb the object to be adsorbed 01. The air extraction component 30 is disposed in the second mounting cavity, and the second mounting cavity is connected to the adsorption space. When the air extraction component 30 extracts air, the self-adsorption membrane 21 is partially embedded in the gap between the support columns 22. The self-adsorption membrane 21 located inside the box body 10 adsorbs the workpiece 01, which can prevent damage to the workpiece 01 during transportation or storage, thus protecting the workpiece 01. Furthermore, the gas in the suction space is extracted by the suction assembly 30, so that the self-adsorption membrane 21 is partially embedded in the gap between the support columns 22, reducing the suction force between the self-adsorption membrane 21 and the workpiece 01, improving the convenience of removing the workpiece 01 from the self-adsorption membrane 21, avoiding damage to the workpiece 01 during the removal process, and improving the workpiece removal efficiency.

[0090] Other embodiments of this disclosure will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of this disclosure that follow the general principles of this disclosure and include common knowledge or customary techniques in the art not disclosed herein. The specification and examples are to be considered exemplary only, and the true scope and spirit of this disclosure are indicated by the appended claims.

Claims

1. A low-pressure release type self-adsorption box, characterized in that, The low-pressure release type self-adsorption box includes: The box body includes a main board, an air extraction block, and a piston seat. The main board has a first mounting cavity with an opening on its top surface. The air extraction block is located at the bottom of the main board and has an air passage that communicates with the first mounting cavity. The piston seat has a second mounting cavity that communicates with the air passage. An adsorption assembly includes a self-adsorption membrane and a plurality of support columns. The self-adsorption membrane is disposed in a first mounting cavity and forms an adsorption space within the first mounting cavity. The plurality of support columns are spaced apart in the adsorption space to support the self-adsorption membrane. The side of the self-adsorption membrane facing away from the support columns is used to adsorb the object to be adsorbed. An air extraction assembly is disposed in the second mounting cavity, which is connected to the adsorption space. When the air extraction assembly extracts air, the self-adsorption membrane is partially embedded in the gap between the support columns. The air extraction assembly is a self-locking piston, which includes a piston cylinder and a piston rod. The piston rod is located inside the piston cylinder, and a piston head is provided at the end of the piston rod. The maximum static friction between the piston head and the piston cylinder is greater than a preset threshold.

2. The low-pressure release type self-adsorption box as described in claim 1, characterized in that, The piston seat is located on the side of the suction block, and the piston seat is provided with a first balance hole that communicates with the second mounting cavity. A sealing plug is installed in the first balance hole.

3. The low-pressure release type self-adsorption box as described in claim 1, characterized in that, The piston seat is located on the side of the suction block away from the main board. The main board is provided with a second balance hole that communicates with the air passage, and a sealing plug is provided in the second balance hole.

4. The low-pressure release type self-adsorption box as described in claim 1, characterized in that, The first mounting cavity includes a first hole segment and a second hole segment. The second hole segment is located at one end of the first hole segment near the top surface of the motherboard. The cross-sectional area of ​​the first hole segment is smaller than the cross-sectional area of ​​the second hole segment to form a stepped first mounting cavity. The self-adhesive membrane is connected to the bottom surface of the second hole segment.

5. The low-pressure release type self-adsorption box as described in claim 1, characterized in that, The self-adsorption membrane is a flexible membrane.

6. The low-pressure release type self-adsorption box as described in claim 1, characterized in that, The box body, the adsorption component, and the air extraction component are provided with an electrostatic dissipation coating; and / or The box body, the adsorption component, and the air extraction component are made of electrostatic dissipative materials.

7. The low-pressure release type self-adsorption box as described in any one of claims 1-6, characterized in that, The low-pressure release type self-adsorption box also includes: A lid is provided on the box body and is used to protect the self-adsorption membrane and the object to be adsorbed.

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