Fixing device and fixing carrier

Abstract

The utility model discloses a fixing device and a fixing carrier, and the fixing device comprises a movable fixing part which is movably arranged on a fixing platform in the axial direction of the movable fixing part; the elastic piece is used for providing acting force for the movable fixing piece to pull the movable fixing piece to the bottom of the fixing platform in the axial direction of the movable fixing piece; and the fastening piece is detachably connected with the second end of the movable fixing piece, so that the clamped product is clamped between the fastening piece and the second end of the movable fixing piece. The movable fixing piece can move in the axial direction of the movable fixing piece so as to adapt to the relative deformation quantity generated between the clamped product and the fixing device, the relative deformation quantity is compensated through the moving distance of the movable fixing piece, and therefore deformation aggravation caused by rigid fixing of the clamped product can be avoided to a certain extent; the warping amount of the clamped product is reduced, the flatness of the clamped product is ensured, and then the purpose of improving the product quality is achieved.

Description

Technical Field

[0001] The present application belongs to the technical field of precision machining clamping devices, and in particular, relates to a fixing device and a fixing carrier. Background Art

[0002] In the manufacturing process of precision products such as printed circuit boards (PCBs), it is necessary to rigidly fix the products such as PCBs on a fixed carrier to achieve fixed positioning of the products. During the manufacturing process, due to the combined effects of thermal stress, structural stress, and additional stress, the product materials will undergo certain deformation after processing, affecting the quality of the product.

[0003] It should be noted that the information disclosed in the above background technology section is only used to enhance the understanding of the background of the present application, and therefore may include information that does not constitute prior art known to ordinary technicians in the field. Summary of the invention

[0004] The present application aims to at least to some extent solve the technical problem that products are easily deformed during the manufacturing process and affect product quality. To this end, the present application provides a fixing device and a fixing carrier.

[0005] A fixing device provided in an embodiment of the present application includes: a movable fixing piece, which is movably arranged on a fixing platform in the axial direction of the movable fixing piece; an elastic piece, which is used to provide a force for pulling the movable fixing piece toward the bottom of the fixing platform in the axial direction of the movable fixing piece; and a fastener, which is detachably connected to the second end of the movable fixing piece to clamp the clamped product between the fastener and the second end of the movable fixing piece.

[0006] In some embodiments, the first end of the movable fixing member is provided with a first limiting end, and the fixed platform is provided with a first positioning portion matching the first limiting end to limit the movable distance of the movable fixing member relative to the fixed platform in the axial direction of the movable fixing member.

[0007] In some embodiments, the fixing device further includes: a limiter, which is respectively connected to the first end of the movable fixing member and the fixing platform to limit the movable distance of the movable fixing member relative to the fixing platform in the axial direction of the movable fixing member.

[0008] In some embodiments, the first end of the limiting member is movably disposed on the first end of the movable fixing member in the axial direction of the movable fixing member, the second end of the limiting member is connected to the fixed platform, the elastic member is connected between the first end of the movable fixing member and the fixed platform, and the elastic member is in a stretched state when clamping the clamped product.

[0009] In some embodiments, the first end of the limiting member is connected to the first end of the movable fixing member, and the second end of the limiting member is movably disposed on the fixed platform in the axial direction of the movable fixing member, the limiting member and the movable fixing member are respectively located on opposite sides of the fixed platform, the elastic member is disposed between the limiting member and the fixed platform, and the elastic member is in a compressed state when clamping the clamped product.

[0010] In some embodiments, the limiting member includes a limiting column and a limiting portion arranged on the limiting column, and the limiting column is threadedly connected, snap-connected or interference-fitted to the first end of the movable fixing member; the elastic member is a compression spring, which is sleeved on the limiting column, and the compression spring is located between the fixed platform and the limiting portion.

[0011] In some embodiments, the movable fixing member is a movable screw hole or a movable screw, and the fastener is a fastening screw matching the movable screw hole or a fastening nut matching the movable screw.

[0012] The embodiment of the present application further proposes a fixed carrier, which includes a fixed platform and a plurality of the above-mentioned fixing devices; a plurality of mounting holes are opened on the fixed platform, and the movable fixing member is movably arranged in the mounting holes in the axial direction of the movable fixing member.

[0013] In some embodiments, the mounting hole passes through the fixed platform, and the mounting hole includes an axial movable section, a connecting through hole section and a limiting section connected in sequence, the inner diameter of the connecting through hole section is smaller than the inner diameter of the axial movable section, and the inner diameter of the connecting through hole section is smaller than the inner diameter of the limiting section; the movable fixing part is movably arranged in the axial movable section in the axial direction of the movable fixing part; the fixing device also includes a limiting part, the first end of the limiting part passes through the limiting section, the connecting through hole section and is connected to the first end of the movable fixing part; the outer diameter of the second end of the limiting part is larger than the inner diameter of the limiting section; the elastic part is arranged in the limiting section, and the outer diameter of the elastic part is larger than the connecting through hole section, one end of the elastic part is in contact with or abuts against the end portion where the connecting through hole section is connected to the limiting section, and the other end of the elastic part is in contact with or abuts against the bottom of the limiting portion of the limiting part.

[0014] In some embodiments, the mounting hole further includes a countersunk section connected to the limiting section, and the second end of the limiting member is movably disposed in the countersunk section in the axial direction of the movable fixing member.

[0015] In some embodiments, the distance between the bottom of the limiting portion and the first end of the movable fixing member is a first length, the distance between the countersunk section and the axial movable section is a second length, the first length is greater than the second length, and the warping amount of the clamped product is less than or equal to the length difference between the first length and the second length.

[0016] In some embodiments, the cross section of the axial movable segment is a polygonal hole matching the outer circumference of the movable fixing member.

[0017] In some embodiments, the inner diameter of the connecting through-hole section matches the outer diameter of the limiting member; and a chamfered guide portion is provided at the end where the connecting through-hole section is connected to the limiting section.

[0018] In some embodiments, the fixing platform includes a first groove portion and one or more adsorption holes located at the bottom of the first groove portion, and the multiple mounting holes are arranged around the first groove portion.

[0019] In some embodiments, the fixed platform further includes a plurality of support columns located at the bottom of the first groove portion.

[0020] In some embodiments, the fixed platform also includes a second groove portion, the first groove portion is arranged inside the second groove portion, the bottom of the second groove portion includes an annular area located between the edge of the first groove portion and the edge of the second groove portion, and the multiple mounting holes are arranged at intervals in the annular area.

[0021] The embodiments of the present application have at least the following beneficial effects:

[0022] The above-mentioned fixing device, since the movable fixing part is movably arranged on the fixing platform in the axial direction of the movable fixing part, and the force pulling toward the bottom of the fixing platform is provided by the elastic part, when the clamped product is clamped and fixed by the fastener and the movable fixing part, the movable fixing part, the fastener and the clamped product as a whole can still have a certain movable margin in the axial direction of the movable fixing part, thereby realizing a flexible connection between the clamped product and the fixing platform, so that when the clamped product and / or the fixing device are deformed, the movable fixing part can move in the axial direction of the movable fixing part to adapt to the relative deformation amount generated between the clamped product and the fixing device, and the relative deformation amount is compensated by the movable distance of the movable fixing part in the axial direction of the movable fixing part, thereby avoiding to a certain extent the aggravation of deformation caused by the rigid fixation of the clamped product, reducing the warping of the clamped product, ensuring the flatness of the clamped product, and thus achieving the purpose of improving product quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following is a brief introduction to the drawings required for the description of the embodiments. Obviously, the drawings described below are some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work. It should be noted that these drawings are only illustrative of the structure of the technical solution of the present application, and do not represent the actual size and proportion of the technical solution of the present application.

[0024] Figure 1 A schematic diagram of the three-dimensional structure of the fixing device in the first embodiment of the present application is shown;

[0025] Figure 2 Shows Figure 1 A schematic diagram of the longitudinal section structure of the movable fixing member of the fixing device;

[0026] Figure 3 Shows Figure 1 A schematic diagram of the three-dimensional structure of the limiting member of the fixing device;

[0027] Figure 4 A diagram showing the use status of a fixed carrier in the first embodiment of the present application is shown;

[0028] Figure 5 Shows Figure 4 Exploded view of fixed vehicles in the game;

[0029] Figure 6 Shows Figure 4 Assembly drawing of the fixed carrier and the clamped product;

[0030] Figure 7 Shows Figure 4 Schematic diagram of the longitudinal section structure of the fixed platform;

[0031] Figure 8 Shows Figure 4 Schematic diagram of the three-dimensional structure of the fixed platform;

[0032] Fig. 9 Shows Figure 4 Schematic diagram of the vertical section structure of the fixed carrier;

[0033] Fig.10 Shows Figure 4 Schematic diagram of the longitudinal section structure when the fixed carrier is not fixing the clamped product;

[0034] Fig.11 Shows Figure 4 Schematic diagram of the longitudinal section structure when the fixed carrier fixes the clamped product;

[0035] Fig.12 Shows Figure 4 A schematic diagram of the longitudinal cross-section structure of a clamped product fixed by a fixed carrier when it is warped;

[0036] Fig.13 Shows Figure 4 A curve diagram showing the relationship between the warping distance of the clamped product and the elastic member;

[0037] Fig.14 A schematic diagram of the longitudinal cross-section structure when the fixed carrier in the second embodiment of the present application does not fix the clamped product;

[0038] Fig.15 Shows Fig.14 The usage status diagram of the fixed carrier in the middle;

[0039] Fig.16 A schematic diagram of the longitudinal cross-section structure of the third embodiment of the present application when the fixed carrier does not fix the clamped product;

[0040] Fig.17 Shows Fig.16 The usage status diagram of the fixed carrier.

[0041] Reference numerals:

[0042] 100, fixing device; 110, movable fixing member; 111, first end of movable fixing member; 112, second end of movable fixing member; 113, first limiting end; 120, elastic member; 130, fastener; 140, limiting member; 141, first end of limiting member; 142, second end of limiting member; 143, limiting column; 144, limiting part; 200, fixing platform; 210, mounting hole; 211, axial movable section; 212, connecting through hole Segment; 213, limit segment; 214, countersunk segment; 215, chamfered guide; 220, first positioning portion; 230, first groove; 231, bottom of first groove; 232, adsorption hole; 233, support column; 240, second groove; 241, annular area; 300, clamped product; Z, axial direction of movable fixing part; R, radial direction of movable fixing part; D1, first distance; D2, second distance; L1, first length; L2, second length. DETAILED DESCRIPTION

[0043] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0044] In addition, the present application may repeat reference numbers and / or reference letters in different examples, and such repetition is for the purpose of simplicity and clarity, and does not in itself indicate the relationship between the various embodiments and / or settings discussed. In addition, the present application provides various specific examples of processes and materials, but those of ordinary skill in the art may recognize the application of other processes and / or the use of other materials.

[0045] The present application is described below with reference to the accompanying drawings and specific embodiments:

[0046] In the manufacturing process of precision products such as printed circuit boards (PCBs), it is necessary to rigidly fix the circuit boards and other products on a fixed carrier to achieve fixed positioning of the products. In the manufacturing process of the products, due to the combined effects of internal stress, thermal stress, structural stress and additional stress generated by assembly, the product materials will undergo certain deformation after processing, affecting the quality of the products.

[0047] In the production process of electrical and electronic products, bonding is a circuit connection method in the electrical and electronic production process. It is used to connect the internal circuit of the chip with the package pins or the gold-plated copper foil of the circuit board with gold wire or solder before packaging. Surface mount technology (SMT) is generally used for bonding. The basic process of surface mount technology generally includes solder paste printing, component mounting, reflow soldering, and appearance and electrical testing. During the process, the product needs to be fixed to achieve the purpose of product positioning, flatness, protection, and equipment adaptation.

[0048] Taking the processing of circuit boards as an example, surface mounting technology usually uses a clamping plate carrier to fix the substrate of the circuit board. Fixed through holes are opened at the edges of the circuit board substrate and other fixed positions. The substrate is rigidly fixed to the clamping plate carrier with screws. The structure is simple and stable and reliable. However, in temperature change processes such as reflow soldering, due to the combined effects of internal stress, thermal stress, structural stress and additional stress, the circuit board material will undergo certain plastic deformation, resulting in quality problems of the circuit board. For example, in the reflow soldering process, the reflow soldering temperature can generally reach 200℃~300℃. Certain thermal stress, structural stress and additional stress are generated in the reflow soldering process. The circuit board material will undergo certain deformation after heat treatment. When the circuit board is fixed by the clamping plate carrier, the deformation degree of the circuit board will be aggravated; and since the expansion coefficients of the circuit board material and the clamping plate carrier are different, the rigid connection of the clamping plate carrier to the circuit board will aggravate the deformation of the circuit board. This is because during the heat treatment process, the deformation amounts generated by the clamping plate carrier and the circuit board are different, the deformation amount generated by the clamping plate carrier does not match the deformation amount generated by the circuit board, and the deformation of the clamping plate carrier is not synchronized with the deformation of the circuit board. When the clamping plate carrier is rigidly connected to the circuit board, the rigid constraint of the clamping plate carrier on the circuit board will cause the deformation of the area of ​​the circuit board that is not rigidly fixed to increase, and then lead to an increase in the warping of the circuit board, resulting in quality problems in the circuit board product and a reduced manufacturing yield of the circuit board.

[0049] In order to solve the quality problem that products such as circuit boards are prone to deformation in processes with temperature changes, the present application embodiment proposes a fixing device 100, such as Figures 1 to 17 As shown, the fixing device 100 includes: a movable fixing member 110, an elastic member 120 and a fastener 130. The movable fixing member 110 is movably arranged on the fixing platform 200 in the axial direction Z of the movable fixing member; the elastic member 120 provides a force for pulling the movable fixing member 110 toward the bottom of the fixing platform 200 in the axial direction Z of the movable fixing member 110; the fastener 130 is detachably connected to the second end 112 of the movable fixing member to clamp the clamped product 300 between the fastener 130 and the second end 112 of the movable fixing member.

[0050] It should be noted that if Figures 1 to 17 As shown, in the embodiment of the present application, the axial direction Z of the movable fixing member refers to the direction in which the movable fixing member is connected to the fastener, and the radial direction R of the movable fixing member refers to the direction perpendicular to the axial direction Z of the movable fixing member. Optionally, when the fastener is a screw, the axial direction Z of the movable fixing member is parallel to the central axis of the screw, and the radial direction R of the movable fixing member is perpendicular to the central axis of the screw. The radial direction R of the movable fixing member can be any direction perpendicular to the central axis of the screw.

[0051] The fixing device 100 proposed in the embodiment of the present application. Since the movable fixing member 110 is movably arranged on the fixing platform 200 in the axial direction Z of the movable fixing member, and an acting force pulling towards the bottom of the fixing platform 200 is provided by the elastic member 120. When clamping and fixing the product 300 to be clamped through the fastener 130, the movable fixing member 110, the fastener 130 and the product 300 to be clamped as a whole can still have a certain amount of movement margin in the axial direction Z of the movable fixing member, realizing a flexible connection between the product 300 to be clamped and the fixing platform 200. Thus, when the product 300 to be clamped and / or the fixing device 100 generate deformations, the movable fixing member 110 can move in the axial direction Z of the movable fixing member to adapt to the relative deformation amount generated between the product 300 to be clamped and the fixing device 100, and compensate for the relative deformation amount through the movement distance of the movable fixing member 110 in the axial direction Z of the movable fixing member. Therefore, it can to a certain extent avoid the aggravation of deformation caused by the rigid fixing of the product 300 to be clamped, reduce the warpage amount of the product 300 to be clamped, ensure the flatness of the product 300 to be clamped, and further achieve the purpose of improving the product quality.

[0052] For example, in a process with temperature changes, the deformation amount generated by the product 300 to be clamped in the axial direction Z of the movable fixing member is x, and the deformation amount generated by the fixing device 100 in the axial direction Z of the movable fixing member is y. And because the thermal expansion coefficients of the product 300 to be clamped and the fixing device 100 are different, the magnitudes of x and y are different, that is, a relative deformation amount |x - y| is generated between the product 300 to be clamped and the fixing device 100. If the fixing device 100 and the product 300 to be clamped are rigidly connected, on the one hand, the product 300 to be clamped is restricted by the fixing device in the rigid connection area, and the other areas of the product 300 to be clamped are not restricted. The deformations of the rigid connection area of the product 300 to be clamped are different from those of other areas, resulting in an increase in the warpage amount of the product 300 to be clamped; on the other hand, due to the different deformation amounts of the two at the rigid connection, that is, a certain relative deformation amount is generated between the fixing device 100 and the product 300 to be clamped, and the rigid connection area of the product 300 to be clamped is restricted and the deformation is aggravated. The fixing device proposed in the present application, by making the fixing device 100 and the product 300 to be clamped flexibly connected, avoids the product 300 to be clamped from being overly restricted in the axial direction Z of the movable fixing member, enables the product 300 to be clamped to have a certain movement distance in the axial direction Z of the movable fixing member, and compensates for the relative deformation amount generated between the product 300 to be clamped and the fixing device 100 through this movement distance, so as to avoid to a certain extent the aggravation of deformation and the increase in the warpage amount caused by the product 300 to be clamped being overly restricted.

[0053] In some embodiments, the fixing device 100 is made of different materials, and the deformation amount generated when heated is different. If the fixing device 100 is made of a material with a relatively small thermal expansion coefficient such as ceramic, the fixing device can be ignored in the process with temperature change.

[0054] The deformation amount produced by the fixture 100 can mainly consider the influence of the deformation produced by the clamped product 300 on the warpage. If the fixture 100 is made of a relatively large material such as aluminum alloy, the fixture 100 will produce a certain deformation in the process with temperature change, and it is necessary to consider the influence of the deformation produced by the clamped product 300 and the deformation produced by the fixture 100 on the warpage of the clamped product.

[0055] It should be noted that the warpage is a spatial measurement method used to express the degree of curvature of a plane in space. In the present disclosure, the warpage is defined as the distance between the two points on the warpage surface that are farthest apart in the height direction. The warpage can be measured by feeler gauge measurement, image measuring instrument, laser measuring instrument, etc. The warpage surface can be, for example, the surface of one side of the clamped plate-like product.

[0056] Based on the same inventive concept, the present application embodiment also proposes a fixed carrier, such as Figures 4 to 17 As shown, the fixed carrier includes a fixed platform 200 and a plurality of the above-mentioned fixing devices 100 ; a plurality of mounting holes 210 are opened on the fixed platform 200 , and the movable fixing member 110 is movably disposed in the mounting holes 210 in the axial direction Z of the movable fixing member.

[0057] In the fixing carrier proposed in the embodiment of the present application, the fixing device 100 can be set on the fixing platform 200 through the mounting hole 210, and the movable fixing part 110 can be movably set on the fixing platform 200 in the axial direction Z of the movable fixing part. At the same time, the elastic part 120 can provide a pulling force toward the bottom of the fixing platform 200. When the clamped product 300 is clamped and fixed by the fastener 130 and the movable fixing part 110, the movable fixing part 110, the fastener 130 and the clamped product 300 can still have a certain amount of movable margin in the axial direction Z of the movable fixing part, so as to realize the flexible connection between the clamped product 300 and the fixing platform 200, so that when the clamped product 300 and / or the fixing device 100 are deformed, the movable fixing part 110 can The movable fixing part moves in the axial direction Z to adapt to the relative deformation generated between the clamped product 300 and the fixing device 100, and the relative deformation is compensated by the movable distance of the movable fixing part 110 in the axial direction Z of the movable fixing part. In other words, the clamped product 300 can have a certain movable distance in the axial direction Z of the movable fixing part, and the deformation difference between the clamped product 300 and the fixed carrier 100 is compensated by the movable distance, so as to avoid to a certain extent the aggravated deformation caused by the rigid fixation of the clamped product 300, so as to reduce the warping of the clamped product, ensure the flatness of the clamped product, and further achieve the purpose of improving product quality, and reduce the actual flatness and precision requirements of the fixed carrier, which can increase the process window corresponding to the fixed carrier.

[0058] In the manufacturing industry of precision products such as surface mount technology, there are high requirements for the flatness of non-rigid products. In addition, the processing of non-rigid products requires high-temperature welding, oven (OVEN) heating and other temperature and humidity change processes. The stress and thermal expansion between non-rigid products and fixed carriers can easily lead to irreversible (plastic) deformation of non-rigid products.

[0059] In the fixing device 100 proposed in the embodiment of the present application, the movable fixing member 110 is movably arranged on the fixing platform 200 only in the axial direction Z of the movable fixing member, and the movable fixing member 110 is fixed in position in the radial direction R of the movable fixing member. When the clamped product 300 is clamped between the fastener 130 and the second end 112 of the movable fixing member by the fastener 130, the clamped product 300 can be accurately positioned, and the clamped product 300 will not be misaligned in the radial direction R of the movable fixing member due to the movement of the movable fixing member 110 in the axial direction Z of the movable fixing member; while ensuring the plane positioning accuracy of the clamped product 300, the clamped product 300 is fixed in the axial direction Z of the movable fixing member with a certain force, so that the clamped product 300 0 can have a certain positioning effect in the axial direction Z of the movable fixing part, and at the same time have a certain movable margin to adapt to the relative deformation caused by the different expansion coefficients of the clamped product 300 and the fixed platform 200, and can avoid the defects of severe warping and reduced flatness of the clamped product 300 caused by the rigid fixation of the fixed platform 200 and the clamped product 300 to a certain extent; in addition, the fixing device 100 can also adjust the force acting on the movable fixing part 110 by replacing the elastic part 120, which can control the maximum warping amount of the clamped product 300 and thus control the flatness of the product; it can also adapt to the clamped products 300 of different specifications and materials, thereby increasing the application range of the fixing device 100.

[0060] For example, when a 7-inch circuit board substrate is clamped and fixed by the fixing device 100 of the embodiment of the present application, after going through various processes such as fixing and reflow soldering in the surface mounting technology, the warping amount caused by stress after being fixed by the fixing device 100 can be made less than 150μm, and the warping amount caused by temperature changes and other reasons after reflow soldering can be less than 200μm. Compared with the traditional rigid fixing method, the warping amount generated by the circuit board substrate is significantly reduced.

[0061] In the manufacturing industry of precision products such as surface mount technology, fixed carriers need to be frequently disassembled and assembled during use, which can easily lead to problems such as screw stripping and braces damage in the fixed carriers. The replacement of these parts in the fixed carriers often requires the use of special machines or tools. The surface mount technology factory itself often does not have the conditions for maintenance, which not only leads to high maintenance costs for fixed carriers, but also affects the production efficiency of the surface mount technology factory. In addition, the positioning accuracy of the fixed carrier is difficult to guarantee after multiple repairs.

[0062] The fixing device 100 proposed in the embodiment of the present application is as follows: Figures 1 to 17As shown, the fixing device 100 and the movable fixing parts 110, elastic parts 120, fasteners 130, etc. therein are all independent assembly parts, which can be easily replaced after being worn out without using special equipment or tools, which can make the maintenance of the fixing device 100 more convenient, and the surface mounting technology factory itself can realize timely maintenance, which can reduce the maintenance cost of the fixing device 100 to a certain extent, and will not affect the production efficiency of the surface mounting technology factory; in addition, since the replacement of the fixing device 100 and the movable fixing parts 110, elastic parts 120, fasteners 130, etc. therein will not affect the structure of the fixing platform 200 itself, it will not affect the positioning accuracy of the fixing device 100 and the fixed carrier, and can also extend the service life of the fixing platform 200 itself.

[0063] In some embodiments of the present application, Figure 5 As shown, a fixing through hole can be opened on the clamped product 300, and after the fixing through hole is aligned with the movable fixing part 110 in the fixing device 100, the purpose of clamping the clamped product 300 between the fastener 130 and the second end 112 of the movable fixing part can be achieved by passing the fastener 130 through the fixing through hole and connecting it to the second end 112 of the movable fixing part.

[0064] In some embodiments of the present application, Fig.16 and Fig.17 As shown, the elastic member 120 can be directly connected between the movable fixing member 110 and the fixed platform 200, that is, one end of the elastic member 120 is connected to the first end 111 of the movable fixing member, and the other end of the elastic member 120 is connected to the fixed platform 200. When the movable fixing member 110 clamps the clamped product 300 through the fastener 130, the clamped product 300 abuts against the top of the fixed platform 200. Under the support of the fixed platform 200, the movable fixing member 110 is pulled upward to make the movable fixing member suspended in the air, and the elastic member 120 is in a stretched state. Thereby, the elastic member 120 provides a force for the movable fixing member 110 to be pulled toward the bottom of the fixed platform 200, thereby making the movable fixing member 110 have a tendency to move toward the fixed platform 200, and the clamped product 300 is pulled toward the fixed platform 200 and positioned and fixed by the movable fixing member 110 and the fastener 130; at the same time, since the movable fixing member 110 can move in the axial direction Z of the movable fixing member, when the clamped product 300 is deformed, the movable fixing member 110 can move in the axial direction Z of the movable fixing member to adapt to the deformation of the clamped product 300.

[0065] In some other embodiments of the present application, Figures 1 to 15As shown, the elastic member 120 can be indirectly connected to the first end 111 of the movable fixing member through the connection method of the fixing device 100 and the fixed platform 200, and the force is transmitted to the movable fixing member 110 through other structures, so that the elastic member 120 can provide the movable fixing member 110 with a force to pull toward the bottom of the fixed platform 200, thereby making the movable fixing member 110 have a tendency to move toward the fixed platform 200, and then the clamped product 300 is pulled toward the fixed platform 200 and positioned and fixed through the movable fixing member 110 and the fastener 130.

[0066] In some embodiments of the present application, Figures 1 to 12 As shown, the first end 111 of the movable fixing member is connected to the stopper 140, and the second end 112 of the movable fixing member is connected to the fastener 130. The first end 111 of the movable fixing member and the second end 112 of the movable fixing member have different functions, so the first end 111 of the movable fixing member and the second end 112 of the movable fixing member can be provided with threaded holes of different or same diameters to respectively realize threaded connection with the fastener 130 and the stopper 140. In addition, in the case where the threaded hole provided at the first end 111 of the movable fixing member and the threaded hole provided at the second end 112 of the movable fixing member have different diameters, the threaded hole provided at the first end 111 of the movable fixing member and the threaded hole provided at the second end 112 of the movable fixing member can be connected; in the case where the threaded hole provided at the first end 111 of the movable fixing member and the threaded hole provided at the second end 112 of the movable fixing member have different or same diameters, the threaded hole provided at the first end 111 of the movable fixing member and the threaded hole provided at the second end 112 of the movable fixing member may not be connected. For example, the height of the limit member 140 screwed into the movable fixing member 110 can be limited by adjusting the depth of the threaded hole, thereby adjusting the first length L1 between the limit portion 144 of the limit member 140 and the movable fixing member 110; the first length L1 between the limit portion 144 of the limit member 140 and the movable fixing member 110 can also be adjusted by adjusting the length of the limit member 140; the first length L1 between the limit portion 144 of the limit member 140 and the movable fixing member 110 can also be adjusted by adjusting the thickness of the fixing platform and / or the structure / depth of the mounting hole; the compression length / stretching length of the elastic member 120 can be adjusted by adjusting the first length L1 between the limit portion 144 of the limit member 140 and the movable fixing member 110, thereby adjusting the force generated by the elastic member 120, and at the same time, the distance between the limit member 140 and the fastener 130 can be adjusted to avoid interference between the limit member 140 and the fastener 130 on the movable fixing member 110.

[0067] In some embodiments of the present application, Figures 1 to 12As shown, the fastener 130 can be threadedly connected to the second end 112 of the movable fixing member to achieve a detachable connection between the fastener 130 and the second end 112 of the movable fixing member; at the same time, the threaded connection method is convenient for assembly and disassembly, and the clamped product 300 can be easily fixed and disassembled.

[0068] In some embodiments of the present application, Figures 1 to 17 As shown, the elastic member 120 and the first end 111 of the movable fixing member can be directly connected or indirectly connected through other structures. It is only necessary to ensure that the elastic member 120 can provide a force to pull the movable fixing member 110 toward the bottom of the fixed platform 200 in the axial direction Z of the movable fixing member.

[0069] In some embodiments of the present application, Figures 4 to 17 As shown, when the clamped product 300 is a circuit board, a fixing through hole can be opened at the edge of the circuit board, so that the fastener 130 can pass through the fixing through hole to connect with the movable fixing member 110, thereby achieving flexible connection and positioning fixation of the circuit board substrate.

[0070] For the clamped products 300 made of different materials and subjected to different processes, other connection methods may also be used, such as using snap-fit ​​connection or interference fit connection between the fastener 130 and the movable fixing member 110 to clamp the clamped product 300 between the fastener 130 and the movable fixing member 110.

[0071] As an optional implementation, Fig.14 and Fig.15 As shown, the first end 111 of the movable fixing member is provided with a first limiting end 113, and the fixed platform 200 is provided with a first positioning portion 220 matching the first limiting end 113 to limit the movable distance of the movable fixing member 110 relative to the fixed platform 200 in the axial direction Z of the movable fixing member.

[0072] In some embodiments of the present application, Fig.14 and Fig.15 As shown, a first limit end 113 can be provided at the first end 111 of the movable fixing part. For example, the first limit end 113 can be a protrusion with a diameter larger than the aperture of the mounting hole. At the same time, a first positioning portion 220 matching the first limit end 113 is provided on the fixing platform 200. For example, the first positioning portion 220 can be the bottom of the mounting hole or a protruding structure arranged at the bottom of the mounting hole. The first positioning portion 220 can limit the movable distance of the first limit end 113 in the axial direction Z of the movable fixing part, and then the maximum warping amount generated by the clamped product 300 can be limited, thereby controlling the flatness and precision of the clamped product 300.

[0073] As an optional implementation, Figures 1 to 12 , Fig.16 and Fig.17 As shown, the fixing device 100 further includes a limiter 140, which is respectively connected to the first end 111 of the movable fixing member and the fixing platform 200 to limit the movable distance of the movable fixing member 110 relative to the fixing platform 200 in the axial direction Z of the movable fixing member.

[0074] In some embodiments of the present application, Figures 1 to 12 , Fig.16 and Fig.17 As shown, the limit member 140 is connected to the first end 111 of the movable fixing member and the fixed platform 200. The limit member 140 can limit the movable distance of the movable fixing member 110 relative to the fixed platform 200 in the axial direction Z of the movable fixing member, and further limit the maximum warping amount of the clamped product 300, thereby controlling the flatness and accuracy of the clamped product 300.

[0075] As an optional implementation, Fig.16 and Fig.17 As shown, the first end 141 of the upper limit member in the axial Z direction of the movable fixing member is movably arranged at the first end 111 of the movable fixing member, the second end 142 of the limit member is connected to the fixed platform 200, and the elastic member 120 is connected between the first end 111 of the movable fixing member and the fixed platform 200. When clamping the clamped product 300, the elastic member 120 is in a stretched state.

[0076] In some embodiments of the present application, Fig.16 and Fig.17 As shown, the first end 141 of the upper limit member is movably disposed at the first end 111 of the movable fixing member in the axial direction Z of the movable fixing member, and the second end 142 of the limit member is connected to the fixed platform 200, so that the movable fixing member 110 can move relative to the fixed platform 200 in the axial direction Z of the movable fixing member; at the same time, the elastic member 120 is connected between the first end 111 of the movable fixing member and the fixed platform 200, as shown in FIG. Fig.16 As shown, when the clamped product 300 is not clamped, the movable fixing member 110 is supported on the elastic member 120 or the limiting member 140 under the action of gravity, as shown in FIG. Fig.17As shown, when clamping the clamped product 300, the clamped product 300 abuts against the top of the fixed platform 200, and the movable fixing member 110 is pulled upward with the support of the fixed platform 200 to make the movable fixing member suspended in the air, and the elastic member 120 is in a stretched state, so that the elastic member 120 can provide the movable fixing member 110 with a force to pull toward the fixed platform 200, thereby making the movable fixing member 110 have a tendency to move toward the fixed platform 200, and then the clamped product 300 is pulled toward the fixed platform 200 and positioned and fixed through the movable fixing member 110 and the fastener 130. For example, a positioning cavity may be opened in the first end 111 of the movable fixing member, and the first end 141 of the limiting member is placed in the positioning cavity, so that the movable fixing member 110 and the limiting member 140 can be relatively movable in the axial direction Z of the movable fixing member, and the movable distance of the movable fixing member 110 relative to the limiting member 140 in the axial direction Z of the movable fixing member can be limited by the structure of the first end 141 of the limiting member and the positioning cavity; at the same time, the second end 142 of the limiting member can be fixed on the fixed platform 200 by welding, threading, snap-fit, interference fit, etc.

[0077] In some embodiments of the present application, Fig.16 and Fig.17 As shown, the elastic member 120 can be a tension spring, and the two ends of the tension spring can be connected to the first end 111 of the movable fixing member and the fixed platform 200 respectively. Optionally, the minimum distance between the first end 111 of the movable fixing member and the fixed platform 200 can be limited by the limit member 140. When the clamped product 300 is not clamped, the minimum distance between the first end 111 of the movable fixing member and the fixed platform 200 is greater than the natural length of the tension spring. When the clamped product 300 is not clamped, the tension spring can also be in a tensioned state.

[0078] As an optional embodiment, the first end 141 of the limit member is connected to the first end 111 of the movable fixing member, and the second end 142 of the limit member is movably disposed on the fixed platform 200 in the axial Z direction of the movable fixing member. The limit member 140 and the movable fixing member 110 are respectively located on opposite sides of the fixed platform 200, and the elastic member 120 is disposed between the limit member 140 and the fixed platform 200. When clamping the clamped product, the elastic member 120 is in a compressed state.

[0079] In some embodiments of the present application, Figures 1 to 12As shown, the first end 141 of the limiting member is connected to the first end 111 of the movable fixing member, and the second end 142 of the limiting member is movably arranged on the fixed platform 200 in the axial direction Z of the movable fixing member, so that the limiting member 140 and the movable fixing member 110 can synchronously move in the axial direction Z of the movable fixing member relative to the fixed platform 200; the limiting member 140 and the movable fixing member 110 are respectively located on the opposite sides of the fixed platform 200, on the one hand, the fixing device 100 can be positioned and installed on the fixed platform 200, and on the other hand, the limiting member 140 can cooperate with the fixed platform 200 to limit the movable distance of the movable fixing member 110 relative to the fixed platform 200 in the axial direction Z of the movable fixing member, and prevent the fixing device from falling off the fixed platform; at the same time, the elastic member 120 is arranged between the limiting member 140 and the fixed platform 200, as shown in FIG. Fig.10 As shown, when the clamped product 300 is not clamped, the movable fixing member 110 is supported in the mounting hole of the fixed platform under the action of gravity, and the elastic member 120 can be in a compressed state or in a natural state; Fig.11 As shown, when clamping the clamped product 300, the clamped product 300 abuts against the top of the fixed platform 200, and the movable fixing member 110 is pulled upward under the support of the fixed platform 200 to make the movable fixing member suspended in the air, and at the same time, the limiting member 140 is pulled upward, and the limiting member 140 presses the elastic member 120 toward the inside of the fixed platform, so that the elastic member 120 is in a compressed state. Under the restriction of the fixed platform 200, the elastic member 120 can transmit the force in the reverse direction downward to the limiting member 140. Since the limiting member 140 is connected to the movable fixing member 110, the downward force can be transmitted to the movable fixing member 110, and the movable fixing member 110 can be pulled toward the bottom of the fixed platform 200 in the axial direction Z of the movable fixing member, so that the movable fixing member 110 has a tendency to move toward the fixed platform 200, thereby pulling the clamped product 300 toward the fixed platform 200 and positioning and fixing it through the movable fixing member 110 and the fastener 130.

[0080] In some embodiments of the present application, when the clamped product 300 is in contact with the top of the fixed platform 200, the compression amount of the elastic member 120 can be set to a constant value, that is, the force of the elastic member 120 on the movable fixing member 110 can be set to a constant value, and the magnitude of the force can be adjusted by changing the thickness and / or material of the elastic member 120. For example, the force generated by the elastic member 120 can be adjusted according to the material, thickness, etc. of the clamped product 300, so that the force of the elastic member 120 matches the characteristics of the clamped product 300, so that the force generated by the elastic member 120 can be sufficient to pull the clamped product 300 to the required flatness, but not so large that the clamped product 300 is pulled to deformation.

[0081] As an optional implementation, Figures 1 to 12 As shown, the limit member 140 includes a limit column 143 and a limit portion 144 arranged on the limit column 143, and the limit column 143 is threadedly connected, snap-connected or interference-fitted with the first end 111 of the movable fixing member; the elastic member 120 is a compression spring, which is sleeved on the limit column 143, and the compression spring is located between the fixed platform 200 and the limit portion 144.

[0082] In some embodiments of the present application, Figures 1 to 12 As shown, the limit member 140 may include a limit column 143 and a limit portion 144 arranged on the limit column 143. The compression spring serving as the elastic member 120 is sleeved on the limit column 143. After the limit member passes through the mounting hole 210 on the fixed platform 200 and is connected to the movable fixing member 110, the limit member 140 and the movable fixing member 110 can be divided into two sides of the fixed platform 200, and the compression spring is located between the fixed platform 200 and the limit portion 144. When the clamped product 300 is clamped, the compression spring can be in a compressed state through the fixed platform 200 and the limit portion 144; when the clamped product 300 is not clamped, the compression spring can be in a compressed state or in a natural state. The movable fixing part 110 and the limiting part 140 respectively enter the mounting hole 210 from the top and the bottom of the fixing platform 200 to achieve mutual connection. On the one hand, the fixing device 100 can be positioned and installed on the fixing platform 200 and prevented from falling off the fixing platform, so as to facilitate the clamping and fixing of the clamped product 300; on the other hand, when the thread and other structures in the fixing device 100 are damaged, they can also be easily disassembled and replaced.

[0083] In some embodiments of the present application, Figure 3 As shown, the limiting column 143 of the limiting member 140 can be threadedly connected to the first end 111 of the movable fixing member, and an I-shaped groove or a X-shaped groove is provided on the limiting portion 144 of the limiting member 140, so that the limiting member 140 can be easily disassembled and assembled using a screwdriver.

[0084] In some embodiments of the present application, the fixing device 100 is assembled from a plurality of parts, and each of the parts is an independent structure relative to the fixing platform. It can be disassembled and assembled using common tools such as screwdrivers and wrenches, and maintenance is convenient.

[0085] As an optional implementation, Figures 1 to 12 As shown, the movable fixing member 110 may be a movable screw hole or a movable screw, and the fastener 130 is a fastening screw matching the movable screw hole or a fastening nut matching the movable screw.

[0086] In some embodiments of the present application, Figures 1 to 12As shown, the movable fixing part 110 can be a movable screw hole, and correspondingly the fastener 130 can be a fastening screw matching the movable screw hole; the fastening screw can be assembled and disassembled with the movable screw hole by means of tools such as a screwdriver, which is more convenient for the disassembly and assembly of the clamped product 300 and can effectively improve the processing efficiency of the clamped product 300.

[0087] In some embodiments of the present application, the movable fixing part 110 can be a movable screw, and correspondingly the fastener 130 can be a fastening nut matching the movable screw hole; the fastening nut can be replaced with the movable screw by tools such as wrenches, which is more convenient for the disassembly and assembly of the clamped product 300 and can effectively improve the processing efficiency of the clamped product 300.

[0088] In some other embodiments of the present application, the movable fixing member 110 and the fastener 130 may also be connected in a manner different from threaded connection to adapt to different production materials, different processes, and other requirements of the clamped product 300.

[0089] As an optional implementation, Figures 4 to 12 As shown, the mounting hole 210 passes through the fixed platform 200, and the mounting hole 210 includes an axial movable section 211, a connecting through hole section 212 and a limiting section 213 connected in sequence, the inner diameter of the connecting through hole section 212 is smaller than the inner diameter of the axial movable section 211, and the inner diameter of the connecting through hole section 212 is smaller than the inner diameter of the limiting section 213; the movable fixing member 110 is movably arranged in the axial movable section 211 in the axial direction Z of the movable fixing member; the fixing device 100 also includes a limiting member 140, and the first end 141 of the limiting member The first end 111 of the movable fixing member passes through the limiting section 213 and the connecting through-hole section 212; the outer diameter of the second end 142 of the limiting member is larger than the inner diameter of the limiting section 213; the elastic member 120 is arranged in the limiting section 213, and the outer diameter of the elastic member 120 is larger than the connecting through-hole section 212, one end of the elastic member 120 is in contact with or connected to the end portion where the connecting through-hole section 212 is connected to the limiting section 213, and the other end of the elastic member 120 is in contact with or connected to the bottom of the limiting portion 144 of the limiting member 140.

[0090] In some embodiments of the present application, Figures 4 to 12 As shown, by making the mounting hole 210 pass through the fixed platform 200, the movable fixing member 110 and the limiting member 140 are respectively inserted from both ends of the mounting hole 210 to achieve connection; at the same time, by limiting the inner diameter size of each section in the mounting hole 210, each section in the mounting hole 210 can cooperate with the limiting member 140 and the elastic member 120 to achieve the limitation of the movable fixing member 110.

[0091] For example, by making the inner diameter of the connecting through-hole section 212 smaller than the inner diameter of the axial movable section 211, the movable position of the movable fixing member 110 can be limited in the axial direction Z of the movable fixing member by the connecting through-hole section 212, thereby preventing the movable fixing member 110 from passing over the connecting through-hole section 212 and being pulled out of the mounting hole 210 by the elastic member 120.

[0092] For example, by making the inner diameter of the connecting through-hole section 212 smaller than the inner diameter of the limiting section 213, and by making the outer diameter of the elastic member 120 larger than the connecting through-hole section 212, one end of the elastic member 120 can abut against the end portion where the connecting through-hole section 212 and the limiting section 213 are connected, and the position of the elastic member 120 can be limited by the end portion of the connecting through-hole section 212, thereby providing support for the elastic member 120; the other end of the elastic member 120 can abut against the bottom of the limiting portion 144 of the limiting member 140, thereby forming a state in which the elastic member 120 is clamped between the connecting through-hole section 212 and the limiting portion 144, and support is provided for the elastic member 120 by the connecting through-hole section 212 and the limiting portion 144.

[0093] For example, by making the outer diameter of the second end 142 of the limiting member larger than the inner diameter of the limiting section 213, the moving distance of the limiting member 140 in the direction of the movable fixing member 110 can be limited by the limiting section 213. In other words, the moving distance of the movable fixing member 110 in the direction of the clamped product 300 can be limited, that is, the maximum warping amount of the clamped product 300 can be limited.

[0094] As an optional implementation, Figures 5 to 12 As shown, the distance between the bottom of the limiting portion 144 and the first end 111 of the movable fixing member is a first length L1, the distance between the countersunk section 214 and the axial movable section 211 is a second length L2, the first length L1 is greater than the second length L2, and the warping amount of the clamped product is less than or equal to the length difference between the first length L1 and the second length L2.

[0095] In some embodiments of the present application, Figures 5 to 12 As shown, the clamping and state changes of the fastening carrier are as follows:

[0096] like Fig. 9 and Fig.10As shown, when the fastening device is assembled on the fixed platform 200, the stopper 140 is connected to the movable fixing member 110, and the elastic member 120 is in a natural state or compressed. At this time, the compression distance of the elastic member 120 can be recorded as D0. When the fastening device does not clamp the clamped product 300, the movable fixing member 110 is under the action of gravity or the action of the elastic member 120, and the first end 111 of the movable fixing member is attached to the end surface where the axial movable section 211 and the connecting through hole section 212 are connected. The distance between the second end 112 of the movable fixing member and the surface of the fixed platform 200 is the first distance D1, and the distance between the bottom surface of the stopper portion 144 of the stopper 140 and the end surface of the countersunk section 214 is the second distance D2.

[0097] like Fig.11 As shown, when the fastening device clamps the clamped product 300, the fastener 130 needs to pass through the fixing hole of the clamped product 300 and connect with the movable fixing part 110, and the fastener 130 is tightened to pull the movable fixing part 110 upward until the second end 112 of the movable fixing part is in contact with the lower surface of the clamped product 300, and the fastener 130 cannot be twisted further. At this time, under the force generated by the elastic part 120, the clamped product 300 is pulled to be in contact with the surface of the fixing platform 200, thereby completing the positioning and fixation of the clamped product 300. In this process, under the action of the fastener 130 and the clamped product 300, the movable fixing part 110 overcomes the force generated by the elastic part 120 in the axial direction Z of the movable fixing part and moves a first distance D1 in the direction of the clamped product 300, so that the second end 112 of the movable fixing part fits the clamped product 300 and is flush with the surface of the fixed platform 200; the upper limit member 140 in the axial direction Z of the movable fixing part simultaneously moves a first distance D1 in the direction of the clamped product 300, and the elastic part 120 is further compressed. At this time, the compression distance of the elastic part 120 can be recorded as the first distance D1. At this time, the force of the fixing device 100 on the clamped product 300 is equal to the force generated by the elastic part 120, and the force is transmitted to the limit member 140, the movable fixing part 110, the fastener 130, and the clamped product 300 in sequence through the elastic part 120. Fig.13 As shown, assuming that the spring constant of the elastic member 120 is k, the initial force F of the elastic member 120 is F=k*(D0+D1). The initial force is a constant force under normal conditions. This force is only related to the lifting distance of the clamped product 300 and the spring constant k. Factory operators can tighten the fastener 130 at will.

[0098] like Fig.12As shown, when the clamped product 300 is warped, the clamped product 300 is separated from the surface of the fixed platform 200, and the distance between the clamped product 300 and the surface of the fixed platform 200 is the second distance D2. The compression distance of the spring as the elastic member 120 can be recorded as the sum of the second distance D2 and the first distance D1, then the final force F of the elastic member 120 = k*

[0099] (D0+D1+D2); at this time, the bottom surface of the limiting portion 144 of the limiting member 140 contacts the end surface of the countersunk section 214, and the limiting member 140 and the movable fixing member 110 cannot continue to rise in the axial direction Z of the movable fixing member. The source of the force acting on the clamped product 300 is converted from the elastic member 120 to the hard contact between the limiting member 140 and the fixed platform 200. The force increases sharply when it exceeds the threshold value, which can overcome the warping elastic force of the substrate, and the fixed carrier limits the warping amount of the clamped product 300 to within the second distance D2.

[0100] From the above changes in the fastening carrier, it can be seen that the maximum warpage amount limited by the fixed carrier is related to the second distance D2. At the same time, the second distance D2 is related to the first length L1 and the second length L2, and the second distance D2 is equal to the first length L1 minus the second length L2. Therefore, the second distance D2 can be adjusted by adjusting the first length L1 and the second length L2 in the fixed carrier to adjust the maximum warpage amount limited by the fixed carrier.

[0101] As an optional implementation, Figures 4 to 12 As shown, the mounting hole 210 further includes a countersunk hole section 214 connected to the limiting section 213 , and the second end 142 of the limiting member in the axial Z direction of the movable fixing member is movably disposed in the countersunk hole section 214 .

[0102] In some embodiments of the present application, Figures 4 to 12 As shown, by setting a countersunk section 214 in the mounting hole 210, the second end 142 of the limiter can be movably set in the countersunk section 214 in the axial direction Z of the movable fixing member, thereby preventing the second end 142 of the limiter from protruding from the surface of the fixing platform 200.

[0103] As an optional implementation, Figures 5 to 7 As shown, the cross section of the axial movable section 211 is a polygonal hole matching the outer circumference of the movable fixing member 110 .

[0104] In some embodiments of the present application, Figures 5 to 7As shown, by making the cross section of the axial movable section 211 a polygonal hole matching the outer periphery of the movable fixing member 110, when the movable fixing member 110 is placed in the axial movable section 211, the movable fixing member 110 can only move in the axial direction Z of the movable fixing member, and is restricted by the axial movable section 211 in the radial direction R of the movable fixing member, and cannot move or rotate in the radial direction R of the movable fixing member relative to the fixed platform 200. When the fastener 130 or the stopper 140 is connected to the movable fixing member 110 through threads, the movable fixing member 110 will not rotate with the rotation of the fastener 130 or the stopper 140, thereby facilitating the connection of the fastener 130 and the stopper 140 with the movable fixing member 110.

[0105] In some embodiments of the present application, the cross-section of the movable fixing member 110 can be a polygon such as a triangle, rectangle, pentagon, or hexagon. Correspondingly, the cross-section of the axial movable section 211 can be a corresponding polygonal hole such as a triangular hole, rectangular hole, pentagonal hole, or hexagonal hole.

[0106] As an optional implementation, Figures 5 to 12 As shown, the inner diameter of the connecting through hole section 212 matches the outer diameter of the limiting member 140 ; ​​and a chamfered guide portion 215 is provided at the end where the connecting through hole section 212 and the limiting section 213 are connected.

[0107] In some embodiments of the present application, Figures 5 to 12 As shown, by matching the inner diameter of the connecting through-hole section 212 with the outer diameter of the limiting member 140, for example, the inner diameter of the connecting through-hole section 212 can be slightly larger than the outer diameter of the limiting member 140, the central axis of the connecting through-hole section 212 can be made to coincide with the central axis of the limiting member 140, and the position of the limiting member 140 on the radial direction R of the movable fixing member is limited by the connecting through-hole section 212, thereby avoiding deviation in the positioning of the limiting member 140 relative to the fixed platform 200; at the same time, in order to make it easier for the limiting member 140 to penetrate the connecting through-hole section, a chamfered guide portion 215 can be provided at the end where the connecting through-hole section 212 and the limiting section 213 are connected, and the limiting column 143 of the limiting member 140 is guided into the connecting through-hole section 212 by the chamfered guide portion 215.

[0108] As an optional implementation, Figure 8 As shown, the fixing platform 200 includes a first groove portion 230 and one or more adsorption holes 232 located at the bottom 231 of the first groove portion, and a plurality of mounting holes are arranged around the first groove portion 230 .

[0109] In some embodiments of the present application, Figure 8As shown, one or more adsorption holes 232 are provided at the bottom 231 of the first groove portion, and the clamped product 300 can be adsorbed by the adsorption holes 232 to preliminarily fix the clamped product 300. The mounting hole 210 is provided around the first groove portion 230, and a fixing device 100 is provided in the mounting hole 210, and the edge of the clamped product 300 can be clamped by the fixing device 100 to achieve positioning and fixing of the clamped product 300.

[0110] As an optional implementation, Figure 8 As shown, the fixing platform 200 further includes a plurality of supporting columns 233 located at the bottom 231 of the first groove portion.

[0111] In some embodiments of the present application, Figure 8 As shown, a plurality of support columns 233 are provided at the bottom 231 of the first groove portion, and the clamped product 300 can be supported by the support columns 233 to prevent the clamped product 300 from being deformed.

[0112] In some embodiments of the present application, Figure 8 As shown, the height of the support column 233 relative to the bottom 231 of the first groove portion is equivalent to the depth of the first groove portion 230, so that when the edge of the clamped product 300 is clamped by the fixing device surrounding the first groove portion 230, the middle area of ​​the clamped product 300 can be supported by the support column to prevent the middle area of ​​the clamped product 300 from being concave and deformed.

[0113] In some embodiments of the present application, Figure 8 As shown, the middle area of ​​the clamped product 300 is adsorbed onto the support column 233 through the adsorption holes 232, thereby preventing the middle area of ​​the clamped product 300 from arching and deforming relative to other areas.

[0114] As an optional implementation, Figure 8 As shown, the fixed platform also includes a second groove portion 240, the first groove portion 230 is arranged inside the second groove portion 234, the bottom of the second groove portion includes an annular area 241 located between the edge of the first groove portion and the edge of the second groove portion, and a plurality of mounting holes 210 are arranged at intervals in the annular area 241.

[0115] In some embodiments of the present application, Figure 8As shown, by making the first groove portion 230 sleeved inside the second groove portion 234, an annular area 241 can be formed at the bottom of the second groove portion, and the annular area 241 is between the edge of the first groove portion 230 and the edge of the second groove portion 240, and the annular area 241 is higher than the bottom 231 of the first groove portion. By arranging a plurality of mounting holes 210 at intervals in the annular area 241, after the fixing device 100 is assembled into the mounting hole 210, the edge of the clamped product 300 can be clamped in the annular area 241 by the fixing device 100, that is, the edge support of the clamped product 300 is fixed on the annular area 241, so that the middle area of ​​the clamped product 300 is suspended above the first groove portion, and the middle area of ​​the clamped product 300 can also be supported by the support column and fixed by adsorption through the adsorption hole. In some embodiments of the present application, Figure 8 As shown, the height of the annular area 241 relative to the bottom 231 of the first groove portion is equivalent to the height of the support column 233 relative to the bottom 231 of the first groove portion.

[0116] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0117] It should be noted that all directional indications in the embodiments of the present application are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0118] Although the embodiments of the present application have been shown and described, those skilled in the art will appreciate that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present application, and that the scope of the present application is defined by the claims and their equivalents.

Claims

1. A fixing device, characterized in that: The fixing device (100) comprises: A movable fixing member (110), wherein the movable fixing member (110) is movably arranged on the fixed platform (200) in the axial direction (Z) of the movable fixing member; an elastic member (120), wherein the elastic member (120) is used to provide a force for pulling the movable fixing member (110) toward the bottom of the fixing platform (200) in the axial direction (Z) of the movable fixing member; and A fastener (130) is detachably connected to the second end (112) of the movable fixing member to clamp the clamped product (300) between the fastener (130) and the second end (112) of the movable fixing member.

2. The fixing device according to claim 1, characterized in that The first end (111) of the movable fixing member is provided with a first limiting end (113), and the fixed platform (200) is provided with a first positioning portion (220) matching the first limiting end (113) so as to limit the movable distance of the movable fixing member (110) relative to the fixed platform (200) in the axial direction (Z) of the movable fixing member.

3. The fixing device according to claim 1, characterized in that: The fixing device (100) further comprises: A limiting member (140) is connected to the first end (111) of the movable fixing member and the fixed platform (200) respectively, so as to limit the movable distance of the movable fixing member (110) relative to the fixed platform (200) in the axial direction (Z) of the movable fixing member.

4. The fixing device according to claim 3, characterized in that: The first end (141) of the limiting member is movably arranged on the first end (111) of the movable fixing member in the axial direction (Z) of the movable fixing member, the second end (142) of the limiting member is connected to the fixing platform (200), the elastic member (120) is connected between the first end (111) of the movable fixing member and the fixing platform (200), and the elastic member (120) is in a stretched state when clamping the clamped product (300).

5. The fixing device according to claim 3, characterized in that: The first end (141) of the limiting member is connected to the first end (111) of the movable fixing member, and the second end (142) of the limiting member is movably arranged on the fixing platform (200) in the axial direction (Z) of the movable fixing member. The limiting member (140) and the movable fixing member (110) are respectively located on two opposite sides of the fixing platform (200), and the elastic member (120) is arranged between the limiting member (140) and the fixing platform (200). When clamping the clamped product (300), the elastic member (120) is in a compressed state.

6. The fixing device according to claim 5, characterized in that: The limiting member (140) comprises a limiting column (143) 143 and a limiting portion (144) arranged on the limiting column (143), and the limiting column (143) is connected to the first end (111) of the movable fixing member by threading, snap-fitting or interference fitting; the elastic member (120) is a compression spring, which is sleeved on the limiting column (143), and the compression spring is located between the fixed platform (200) and the limiting portion (144).

7. The fixing device according to any one of claims 1 to 6, characterized in that: The movable fixing member (110) 110 is a movable screw hole or a movable screw, and the fastener (130) is a fastening screw matching the movable screw hole or a fastening nut matching the movable screw.

8. A fixed carrier, characterized in that: The fixed carrier comprises a fixed platform (200) and a plurality of fixing devices (100) according to any one of claims 1 to 7; a plurality of mounting holes (210) are provided on the fixed platform (200), and the movable fixing member (110) is movably arranged in the mounting holes (210) in the axial direction (Z) of the movable fixing member.

9. The fixed carrier according to claim 8, characterized in that: The mounting hole (210) passes through the fixed platform (200), and the mounting hole (210) comprises an axial movable section (211), a connecting through hole section (212), and a limiting section (213) which are connected in sequence, the inner diameter of the connecting through hole section (212) being smaller than the inner diameter of the axial movable section (211), and the inner diameter of the connecting through hole section (212) being smaller than the inner diameter of the limiting section (213); The movable fixing member (110) is movably arranged in the axial movable section (211) in the axial direction (Z) of the movable fixing member; The fixing device (100) further comprises a limiting member (140), wherein a first end (141) of the limiting member passes through the limiting section (213), the connecting through hole section (212), and is connected to a first end of the movable fixing member (110); an outer diameter of a second end (142) of the limiting member is greater than an inner diameter of the limiting section (213); The elastic member (120) is arranged in the limiting section (213), and the outer diameter of the elastic member (120) is larger than the connecting through-hole section (212), one end of the elastic member (120) is in contact with or connected to the end portion of the connecting through-hole section (212) connected to the limiting section (213), and the other end of the elastic member (120) is in contact with or connected to the bottom of the limiting portion (144) of the limiting member (140).

10. The fixed carrier according to claim 9, characterized in that: The mounting hole (210) further comprises a countersunk hole section (214) connected to the limiting section (213), and the second end (142) of the limiting member is movably disposed in the countersunk hole section (214) in the axial direction (Z) of the movable fixing member.

11. The fixed carrier according to claim 10, characterized in that: The distance between the bottom of the limiting portion (144) and the first end (111) of the movable fixing member is a first length (L1), the distance between the countersunk section (214) and the axial movable section (211) is a second length (L2), the first length (L1) is greater than the second length (L2), and the warping amount of the clamped product (300) is less than or equal to the length difference between the first length (L1) and the second length (L2).

12. The fixed carrier according to claim 9, characterized in that: The cross section of the axial movable section (211) is a polygonal hole matching the outer circumference of the movable fixing member (110).

13. The fixed carrier according to claim 9, characterized in that: The inner diameter of the connecting through hole section (212) matches the outer diameter of the limiting member (140); and a chamfered guide portion (215) is provided at the end where the connecting through hole section (212) is connected to the limiting section (213).

14. The fixed carrier according to any one of claims 8 to 13, characterized in that: The fixed platform (200) comprises a first groove portion (230) and one or more adsorption holes (232) located at the bottom of the first groove portion (230), and the plurality of mounting holes (210) are arranged around the first groove portion (230).

15. The fixed carrier according to claim 14, characterized in that: The fixed platform (200) further comprises a plurality of support columns (233) located at the bottom of the first groove portion (230).

16. The fixed carrier according to claim 14, characterized in that: The fixed platform (200) further comprises a second groove portion (240), the first groove portion (230) being sleeved inside the second groove portion (240), the bottom of the second groove portion (240) comprising an annular area (241) located between an edge of the first groove portion (230) and an edge of the second groove portion (240), and the plurality of mounting holes (210) being arranged at intervals in the annular area (241).

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