A multi-point pressure maintaining device

Abstract

This application discloses a multi-point pressure-holding device, comprising: a base with a mounting position and a first fixing mechanism for fixing a first workpiece; a first opening extending along a first direction on the top surface of the base; a second fixing mechanism for fixing a second workpiece, including a first fixing seat detachably fixed to the mounting position; a first groove extending along the first direction at one end of a second abutment block; a pressure-holding mechanism including a second fixing seat detachably fixed to the first abutment block or the second abutment block; a pressure-holding rod slidably connected to the second fixing seat in the vertical direction, and a first spring between the second fixing seat and the pressure-holding rod; the pressure-holding rod extending along the first direction and having multiple horizontally upward-facing pressure-holding surfaces at the end away from the second fixing seat, the multiple pressure-holding surfaces being spaced apart in the first direction. This multi-point pressure-holding device can simultaneously maintain pressure at multiple points on the inner surface of the workpiece, while also enabling flexible switching and safe storage of the pressure-holding mechanism between different work positions.

Description

Technical Field

[0001] This specification relates to the field of pressure holding device technology, and in particular to a multi-point pressure holding device. Background Technology

[0002] In the automated production process of electronic products, it is often necessary to apply a certain pressure to the inner surface of tubular, cylindrical or cavitary workpieces (such as housings, frames, sleeves, etc.) and maintain it for a period of time to ensure that they are firmly bonded to the internal components (such as small components, sealing rings, foam, tape, etc.). This process is usually called "pressure holding".

[0003] In existing pressure-holding devices, the end of the pressure-holding rod typically has only one pressure-holding surface, meaning that pressure can only be applied to one point on the inner surface of the workpiece at a time. When multiple points on the inner surface of the workpiece require pressure holding (e.g., multiple critical bonding points on a long, narrow shell), multiple pressure-holding mechanisms are often needed to apply pressure separately, or a moving mechanism is used to sequentially move a single pressure-holding surface to different positions for multiple pressure holding operations. The former results in complex equipment structure, high cost, and large space occupation; the latter increases process time, reduces production efficiency, and multiple positioning can easily lead to cumulative errors, affecting the consistency of pressure holding.

[0004] Furthermore, regarding the slide rail layout of the pressure-holding device, existing designs often place the slide rail centrally on the fixed base, with the slider and pressure-holding rod arranged symmetrically along the slide rail. While this central layout ensures balanced force distribution, for longer workpieces, the centrally positioned slide rail and slider often interfere with the workpiece spatially, limiting the position and angle at which the pressure-holding rod extends into the workpiece, or requiring a larger fixed base to make room, resulting in an increased equipment size.

[0005] Meanwhile, existing pressure-holding mechanisms are typically fixed at a single workstation, making it impossible to flexibly switch between different workstations. When multiple pressure-holding operations are required on the same workpiece at different locations, multiple pressure-holding mechanisms are needed, increasing equipment costs and floor space. When pressure holding is not required, the pressure-holding rod is often exposed, which can easily interfere with surrounding components and poses safety hazards.

[0006] Therefore, how to achieve simultaneous pressure holding at multiple points on the inner surface of a workpiece without the need for multiple independent pressure holding mechanisms or repeated positioning, and ensure that the pressure holding mechanism does not interfere with the workpiece when it is inserted into the long strip workpiece, while also achieving flexible switching and safe storage of the pressure holding mechanism between different workstations, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0007] In view of the shortcomings of the prior art, one object of this specification is to provide a multi-point pressure holding device that can simultaneously hold pressure at multiple points on the inner surface of a workpiece, while also enabling flexible switching and safe storage of the pressure holding mechanism between different workstations.

[0008] To achieve the above objectives, this specification provides a multi-point pressure-holding device, comprising: The base has a mounting position and a first fixing mechanism for fixing a first workpiece; a first abutting block is fixed to one end of the first fixing mechanism along a first direction; the top surface of the base has a first opening extending along the first direction; the mounting position is located on one side of the first fixing mechanism in a second direction; the first opening is located between the first fixing mechanism and the mounting position; the first direction, the second direction, and the vertical direction are mutually perpendicular. The second fixing mechanism for fixing the second workpiece includes a first fixing seat detachably fixed to the mounting position; a second abutting block is fixed to one end of the first fixing seat along a first direction; the first fixing seat is provided with a first groove extending along the first direction at one end of the second abutting block for accommodating the second workpiece; the second workpiece is provided with a first through hole extending along the first direction. The pressure-holding mechanism includes a second fixed seat detachably fixed to the first abutment block or the second abutment block; a pressure-holding rod is slidably connected to the second fixed seat in the vertical direction, and a first spring is provided between the second fixed seat and the pressure-holding rod; the pressure-holding rod extends along a first direction and has a plurality of horizontally upward-facing pressure-holding surfaces at one end away from the second fixed seat, and the plurality of pressure-holding surfaces are spaced apart in the first direction; when the second fixed seat is fixed to the first abutment block, it is in a standby position, and the pressure-holding rod is retracted into the first opening; when the second fixed seat is fixed to the second abutment block, it is in a working position, and the pressure-holding rod extends into the first through hole of the second workpiece, and the pressure-holding surface contacts the inner surface of the second workpiece.

[0009] In a preferred embodiment, the pressure-holding surface is rectangular, and the heights of the plurality of pressure-holding surfaces are different.

[0010] In a preferred embodiment, a slide rail extending vertically is fixedly connected to the second fixed base; a slider is slidably connected to the slide rail, and the slider has a first recess extending vertically to accommodate the first spring; the slide rail is offset from the middle position of the second fixed base in a second direction, and the side of the slide rail fixed to the second fixed base is perpendicular to the second direction; the slider is located on the side of the slide rail facing the mounting position in the second direction; the pressure-holding rod is fixedly connected to the slider.

[0011] In a preferred embodiment, the slider includes a first part and a second part that are connected and perpendicular to each other. The first part is perpendicular to the second direction and is slidably connected to the slide rail. The first part is connected to the second part at the middle position in the second direction. The bottom of the second part is provided with the first recess. The first recess and the slide rail are spaced apart and aligned in the first direction.

[0012] In a preferred embodiment, the pressure-holding mechanism further includes a connecting plate fixedly connected to the second fixed seat; the connecting plate includes a first blocking block located below the second part and a second blocking block located above the second part; the distance between the first blocking block and the second blocking block is greater than the vertical dimension of the second part; one end of the first spring abuts against the first blocking block, and the other end abuts against the bottom surface of the first recess.

[0013] In a preferred embodiment, the connecting plate is fixedly connected to two positioning rods extending in a first direction, and the two positioning rods are spaced apart on both sides of the slider in a second direction; the second fixed seat is slidably connected to a positioning block, and a second spring extending in the second direction is provided between the positioning block and the second fixed seat; the positioning block includes a first positioning surface that contacts the first abutting block or the second abutting block, and a clearance surface for avoiding the positioning rods; the second fixed seat is provided with an abutting post extending in the first direction, and the abutting post has a first abutting surface perpendicular to the first direction; the positioning block is located between two vertically arranged abutting posts.

[0014] In a preferred embodiment, the end of the connecting plate in the second direction includes an inwardly facing first plane; the side of the second fixing seat that contacts the second spring is a second plane; the second part is located between the two second planes in the second direction; a first receiving space is formed between the second fixing seat and the connecting plate for accommodating the positioning block; the first positioning surface and the clearance surface are located between the positioning rod and the slider; the positioning rod is cylindrical, and the clearance surface is curved; the first positioning surface is an inclined plane, parallel to the vertical direction, and intersects both the first and second directions.

[0015] In a preferred embodiment, the positioning block includes a connected and perpendicular operating part and a positioning part; the operating part is located within the first accommodating space; the vertical dimension of the operating part is equal to the vertical dimension of the third accommodating space, the vertical dimension of the operating part is equal to the vertical dimension of the third accommodating space, the vertical dimension of the operating part is equal to the vertical dimension of the third accommodating space, and the vertical dimension of the operating part is smaller than the vertical dimension of the third accommodating space, and larger than the distance between the first plane and the second plane; the positioning part is located between the first plane and the second plane, and the vertical dimension of the positioning part in the second direction is smaller than the distance between the first plane and the second plane; the first positioning surface and the clearance surface are located at the end of the positioning part away from the operating part in the first direction.

[0016] In a preferred embodiment, the first abutting block is provided with a plurality of second abutting surfaces, two first positioning holes and two second positioning surfaces; the two first positioning holes are respectively used to accommodate two positioning rods, the second abutting surfaces are used to abut against the first abutting surfaces and are located above and below the first positioning holes; the second positioning surfaces are used to fit against the first positioning surfaces, the second positioning surfaces are inclined planes, the second positioning surfaces are parallel to the vertical direction and intersect with both the first direction and the second direction.

[0017] In a preferred embodiment, the first fixing mechanism includes a platform and a pressure block. The platform is used to place the first workpiece. The pressure block is located on the side of the platform away from the mounting position in a second direction. The pressure block includes a body slidably disposed on the base in a vertical direction, a third blocking block fixedly connected to the base, and a third spring disposed between the body and the third blocking block. The top of the body is provided with a first receiving hole extending in a vertical direction. The third blocking block is located on one side of the body in a first direction, and at least a portion of the third blocking block extends into the first receiving hole. The upper end of the third spring abuts against the third blocking block, and the lower end abuts against the bottom surface of the first receiving hole.

[0018] Beneficial effects

[0019] The multi-point pressure holding device provided in this embodiment is in a standby position when the second fixed base is fixed to the first abutting block, and the pressure holding rod is stored in the first opening to achieve safe avoidance and without occupying additional space. When the second fixed base is fixed to the second abutting block, it is in a working position, and the pressure holding rod extends horizontally into the first through hole of the second workpiece along the first direction. Multiple pressure holding surfaces simultaneously contact multiple corresponding positions on the inner surface of the second workpiece and apply pressure from below. Thus, with the integrated design of "multiple spaced pressure holding surfaces set on one pressure holding rod", it realizes the simultaneous application of pressure to multiple pressure holding points on the inner surface of the elongated second workpiece. This avoids the equipment complexity and increased cost caused by using multiple independent pressure holding mechanisms, and also avoids the low efficiency and cumulative error caused by multiple movement and positioning of a single pressure holding surface. It significantly improves the pressure holding efficiency and pressure holding consistency. At the same time, one set of pressure holding mechanism can be quickly interchanged and installed between multiple abutting blocks to achieve multi-station sharing. When in standby, it is horizontally stored in the first opening on the top surface to further optimize space utilization.

[0020] Specific embodiments of the present invention are disclosed in detail with reference to the following description and accompanying drawings, indicating how the principles of the invention can be employed. It should be understood that the embodiments of the present invention are not limited in scope as a result.

[0021] Features described and / or illustrated for one embodiment may be used in the same or similar manner in one or more other embodiments, combined with features in other embodiments, or substituted for features in other embodiments.

[0022] It should be emphasized that the term "including / comprises" as used herein refers to the presence of a feature, whole, step, or component, but does not exclude the presence or addition of one or more other features, wholes, steps, or components. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0024] Figure 1 This is a schematic diagram of the structure of a multi-point pressure holding device provided in this embodiment; Figure 2 This is a schematic diagram of another multi-point pressure holding device provided in this embodiment; Figure 3 This is a schematic diagram of the structure of a base provided in this embodiment; Figure 4 for Figure 3Enlarged structural diagram at point A; Figure 5 for Figure 4 Schematic diagram of the internal structure of the intermediate loading platform and the pressure block; Figure 6 This is a three-dimensional structural diagram of a pressure-holding mechanism provided in this embodiment; Figure 7 This is a schematic diagram of the structure of a second fixing base provided in this embodiment; Figure 8 This is a schematic diagram of the structure of a slider provided in this embodiment; Figure 9 This is a schematic diagram of the structure of a connecting plate provided in this embodiment; Figure 10 for Figure 6 The front view after removing the connecting plate and positioning block; Figure 11 This is a schematic diagram of the structure of a positioning block provided in this embodiment; Figure 12 for Figure 11 A structural diagram from another perspective; Figure 13 for Figure 6 A structural diagram from another perspective; Figure 14 for Figure 13 A schematic diagram of the structure after removing one positioning block; Figure 15 This is a schematic diagram of the structure of a second fixing mechanism provided in this embodiment; Figure 16 for Figure 15 A bottom view; Figure 17 for Figure 16 A schematic diagram of the structure after removing the baffle. Figure 18 for Figure 17 A schematic diagram of the structure after removing the blocking block, limiting block, operating block and fourth spring; Figure 19 This is a schematic diagram of the structure of a sealing block provided in this embodiment; Figure 20 for Figure 19 A structural diagram from another perspective.

[0025] Explanation of reference numerals in the attached figures: 10. Pressure holding mechanism; 11. Second fixed seat; 111. Slide rail; 112. Third recess; 113. Abutment post; 114. First abutment surface; 115. First receiving space; 116. Second plane; 12. Slider; 121. First recess; 122. First part; 123. Second part; 13. Connecting plate; 131. First blocking block; 132. Second recess; 133. Second blocking block; 134. Mounting hole; 135. First plane; 14. First spring; 15. Pressure holding rod; 151. Pressure holding surface; 16. Positioning rod; 17. Positioning block; 171. First positioning surface; 172. Clearance surface; 173. Operating part; 1731. Fourth recess; 174. Positioning part; 18. Second spring; 20. Base; 201. First workpiece; 21. First fixing mechanism; 211. First opening; 212. Platform; 213. Pressure block; 214. Body; 2141. First receiving hole; 215. Third blocking block; 216. Third spring; 22. Mounting position; 221. Second magnetic component; 222. First positioning pin; 23. First abutting block; 231. Second abutting surface; 232. First positioning hole; 233. Second positioning surface; 24. Fourth positioning hole; 30. Second fixing mechanism; 301. Second workpiece; 302. First through hole; 31. First fixing seat; 311. Operating surface; 312. Connecting surface; 313. Second receiving space; 314. Third receiving space; 3141. Second receiving hole; 315. Bearing plate; 3151. First groove; 3152. Second positioning pin; 316. Second through hole; 318. First magnetic component; 319. Third positioning hole; 32. Sealing block; 321. Limiting step; 322. Fifth positioning hole; 323. Second groove; 33. Limiting block; 34. Fourth spring; 35. Operating block; 36. Baffle; 37. Second abutment block; 371. Third abutment surface; 372. Second positioning hole; 373. Third positioning surface; X, first direction; Y, second direction; Z, vertical direction. Detailed Implementation

[0026] To enable those skilled in the art to better understand the technical solutions of this invention, the technical solutions of the embodiments of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this invention, and not all embodiments. Based on the embodiments of this invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this invention.

[0027] It should be noted that when an element is referred to as being "set on" another element, it can be directly on the other element or may be interposed with another element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or may be interposed with another element. The terms "vertical," "horizontal," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only possible implementations.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0029] Please see Figures 1 to 20 This application provides a multi-point pressure holding device, including: a base 20, a second fixing mechanism 30, and a pressure holding mechanism 10.

[0030] Among them, such as Figure 3 As shown, the base 20 has a mounting position 22 and a first fixing mechanism 21 for fixing the first workpiece 201. A first abutting block 23 is fixed to one end of the first fixing mechanism 21 along the first direction X. The top surface of the base 20 has a first opening 211 extending along the first direction X. The mounting position 22 is located on one side of the first fixing mechanism 21 in the second direction Y. The first opening 211 is located between the first fixing mechanism 21 and the mounting position 22. The first direction X, the second direction Y, and the vertical direction Z are mutually perpendicular; that is, the first direction X and the second direction Y are two perpendicular directions in the horizontal plane.

[0031] like Figure 1 and Figure 15 As shown, the second fixing mechanism 30 is used to fix the second workpiece 301, including a first fixing seat 31 detachably fixed to the mounting position 22. A second abutment block 37 is fixed to one end of the first fixing seat 31 along the first direction X. The first fixing seat 31 has a first groove 3151 extending along the first direction X at one end of the second abutment block 37 for accommodating the second workpiece 301. The second workpiece 301 has a first through hole 302 extending along the first direction X.

[0032] like Figure 1 and Figure 6As shown, the pressure-holding mechanism 10 includes a second fixing seat 11 detachably fixed to the first abutment block 23 or the second abutment block 37. A pressure-holding rod 15 is slidably connected to the second fixing seat 11 in the vertical direction Z, and a first spring 14 is provided between the second fixing seat 11 and the pressure-holding rod 15. The pressure-holding rod 15 extends along the first direction X and has multiple horizontally upward-facing pressure-holding surfaces 151 at the end away from the second fixing seat 11, with the multiple pressure-holding surfaces 151 spaced apart in the first direction X. Figure 1 As shown, when the second fixing seat 11 is fixed to the first abutment block 23, it is in a standby position, and the pressure holding rod 15 is retracted into the first opening 211. Figure 2 As shown, when the second fixing seat 11 is fixed to the second abutment block 37, it is in the working position, the pressure holding rod 15 extends into the first through hole 302 of the second workpiece 301, and multiple pressure holding surfaces 151 are in contact with the inner surface of the second workpiece 301.

[0033] The multi-point pressure-holding device provided in this embodiment is in a standby position when the second fixing seat 11 is fixed to the first abutting block 23, and the pressure-holding rod 15 is housed in the first opening 211 to achieve safe avoidance and without occupying additional space. When the second fixing seat 11 is fixed to the second abutting block 37, it is in a working position, and the pressure-holding rod 15 extends horizontally into the first through hole 302 of the second workpiece 301 along the first direction X. Multiple pressure-holding surfaces 151 simultaneously contact multiple corresponding positions on the inner surface of the second workpiece 301 and apply pressure from below, thereby achieving "one pressure-holding rod 15 with..." The integrated design of multiple spaced pressure-holding surfaces 151 enables simultaneous pressure application to multiple pressure-holding points on the inner surface of the elongated second workpiece 301. This avoids the equipment complexity and increased costs caused by using multiple independent pressure-holding mechanisms 10, as well as the inefficiency and cumulative errors caused by multiple movements and positioning of a single pressure-holding surface 151. This significantly improves pressure-holding efficiency and consistency. At the same time, a set of pressure-holding mechanisms 10 can be quickly interchanged and installed between multiple abutment blocks to achieve multi-station sharing. When in standby mode, it is horizontally stored in the first opening 211 on the top surface, further optimizing space utilization.

[0034] In this embodiment, the pressure-holding surface 151 is rectangular, and the multiple pressure-holding surfaces 151 have different heights. This allows the multiple pressure-holding surfaces 151 to adapt to the unevenness of the inner surface of the second workpiece 301 in the vertical direction Z or the actual situation where different pressure-holding points are at different heights. For example, when there are steps, protrusions, or inclined structures on the inner surface of the second workpiece 301, the pressure-holding surfaces 151 at different heights can make precise contact with the pressure-holding points at different heights, ensuring that each pressure-holding surface 151 can fully fit with the corresponding pressure-holding point. This avoids the problem of "partial contact and partial suspension" caused by all pressure-holding surfaces 151 being of the same height, further improving the effectiveness and consistency of multi-point pressure holding.

[0035] Specifically, the number of pressure-holding surfaces 151 is at least two. For example... Figure 6 The number of pressure-holding surfaces 151 is four. The shape of the pressure-holding surfaces 151 is preferably rectangular, but it can also be adjusted according to actual needs, and can also be other shapes such as circles.

[0036] This application achieves a modular design for a pressure-holding mechanism 10 that can be used across multiple workstations through a detachable connection between the pressure-holding mechanism 10 and the two abutment blocks. The two fixing mechanisms can also be replaced as needed. When switching workstations of the pressure-holding mechanism 10, simply remove the pressure-holding mechanism 10 from one abutment block and install it onto the other; no tools are required, achieving interchangeability and rapid disassembly / reassembly. During installation, the pressure-holding mechanism 10 achieves high-precision repeatability through a precise fit between its structure and the abutment blocks, ensuring the consistency of the position of the pressure-holding rod 15 after each installation. The pressure-holding rod 15 is slidably connected to the second fixed seat 11 and is provided with elastic force by the first spring 14. Its sliding direction is ensured to be perpendicular by the structure itself, keeping the pressure-holding surface 151 always facing upwards, and the pressure-holding direction perpendicular to the inner surface of the workpiece, ensuring pressure-holding perpendicularity.

[0037] When the pressure holding mechanism 10 is installed on the first abutment block 23, it is in the standby position, and the pressure holding rod 15 is stored in the first opening 211, which does not occupy extra space and avoids interference. When the pressure holding mechanism 10 is installed on the second abutment block 37, it is in the working position, and the pressure holding rod 15 extends horizontally into the first through hole 302, so that the upward-facing pressure holding surface 151 abuts against the inner surface of the second workpiece 301 and applies pressure from below. Thus, in a purely mechanical and unpowered manner, it simultaneously achieves multiple technical effects such as interchangeability and quick disassembly and assembly, high-precision positioning, large pressure output in a small space, guaranteed pressure holding verticality, and space-saving standby storage. It significantly reduces equipment costs and energy consumption, improves changeover efficiency and pressure holding quality, and is especially suitable for the inner surface pressure holding process of precision modules and thin-walled components in electronic products such as mobile phones and computers.

[0038] In this embodiment, a slide rail 111 extending in the vertical direction Z is fixedly connected to the second fixed base 11. A slider 12 is slidably connected to the slide rail 111, such as... Figure 8As shown, the slider 12 has a first recess 121 extending vertically in the Z direction to accommodate the first spring 14. The slide rail 111 is offset from the center of the second fixed seat 11 in the second direction Y, and the side of the slide rail 111 fixed to the second fixed seat 11 is perpendicular to the second direction Y. The slider 12 is located on the side of the slide rail 111 facing the mounting position 22 in the second direction Y. The pressure holding rod 15 is fixedly connected to the slider 12. This eccentric layout causes the slide rail 111 and the slider 12 to be offset away from the mounting position 22, providing more clearance for the second workpiece 301, which has a longer dimension in the first direction X. This avoids interference between the slide rail 111 and the long strip-shaped second workpiece 301 when centrally arranged. At the same time, the insertion position and angle of the pressure holding rod 15 are not affected by the eccentricity of the slide rail 111, achieving the technical effect of "avoidance and function at the same time".

[0039] like Figure 8 As shown, the slider 12 includes a first part 122 and a second part 123 that are connected and perpendicular to each other. The first part 122 is perpendicular to the second direction Y and is slidably connected to the slide rail 111. The first part 122 is connected to the second part 123 at the middle position in the second direction Y. The bottom of the second part 123 is provided with a first recess 121, and the first recess 121 and the slide rail 111 are spaced apart and aligned in the first direction X. This T-shaped slider 12 structure allows the first part 122 to be responsible for sliding cooperation with the slide rail 111 (ensuring guiding accuracy), while the second part 123 is responsible for accommodating the first spring 14 and providing the mounting base for the pressure-holding rod 15 (ensuring functional realization). The two parts are functionally decoupled and each performs its own function, adapting to the layout of the eccentric slide rail 111, further optimizing space utilization while ensuring sliding guiding accuracy.

[0040] Specifically, the pressure-holding mechanism 10 also includes a connecting plate 13 fixedly connected to the second fixed base 11. The connecting plate 13 includes a first blocking block 131 located below the second part 123 and a second blocking block 133 located above the second part 123. The distance between the first blocking block 131 and the second blocking block 133 is greater than the dimension of the second part 123 in the vertical direction Z. One end of the first spring 14 abuts against the first blocking block 131, and the other end abuts against the bottom surface of the first recess 121, forming a double-block-limited elastic pressure-holding structure. The movement range of the first part 122 in the vertical direction Z is precisely limited by the first blocking block 131 and the second blocking block 133, which not only prevents the slider 12 from dislodging from the slide rail 111, but also ensures that the first spring 14 is always within the effective working compression range. At the same time, the spring is housed in the first recess 121 and is not affected by external dust, which improves the reliability and service life of the pressure-holding mechanism 10. Since the elastic force of the first spring 14 is proportional to its compression, the holding pressure can be flexibly set by selecting a first spring 14 with different stiffness or adjusting the pre-compression, so that a large holding pressure output can be achieved in a small space.

[0041] In this embodiment, such as Figure 9 As shown, the first blocking block 131 has a second recess 132 extending in the vertical direction Z, and the depth of the second recess 132 is less than the depth of the first recess 121. Figure 10 As shown, the first spring 14 abuts against the bottom surface of the first recess 121 and the bottom surface of the second recess 132, so that both ends of the first spring 14 are respectively embedded in the two opposing recesses, forming a "double recess opposing" spring receiving structure. Compared with the scheme where one end of the first spring 14 abuts against the plane of the first blocking block 131, this design can simultaneously radially limit both ends of the first spring 14, effectively preventing the first spring 14 from bending, deflecting or dislodging during compression and reset, improving the stability of the movement of the first spring 14 and the consistency of the direction of the holding pressure; at the same time, since the second recess 132 is shallow, it will not significantly weaken the structural strength of the first blocking block 131, ensuring the limiting effect while taking into account the overall reliability.

[0042] Specifically, the connecting plate 13 is fixedly connected to two positioning rods 16 extending along the first direction X, and the two positioning rods 16 are spaced apart on both sides of the slider 12 in the second direction Y. Figure 9As shown, the connecting plate 13 is fixedly provided with mounting holes 134 for fixing and installing the positioning rod 16. The positioning rod 16 provides a precise positioning reference for the entire pressure-holding mechanism 10 when it is installed onto the first abutment block 23 or the second abutment block 37. By engaging the positioning rod 16 with the positioning holes on the first abutment block 23 or the second abutment block 37, the relative position between the pressure-holding mechanism 10 and the second workpiece 301 can be ensured to be accurate, avoiding misalignment of the pressure-holding surface 151 and the second workpiece 301 due to installation deviations, thus improving pressure-holding accuracy and product consistency. The two positioning rods 16 are symmetrically arranged in the second direction Y, allowing the pressure-holding mechanism 10 to obtain positioning constraints from two different directions simultaneously during installation. This effectively restricts the rotational freedom of the pressure-holding mechanism 10 in the first direction X and the second direction Y, ensuring that the pressure-holding mechanism 10 will not deflect or tilt when subjected to reaction forces, guaranteeing that the pressure-holding surface 151 always contacts the second workpiece 301 in the correct posture, thus improving the stability and consistency of pressure holding.

[0043] In this embodiment, a positioning block 17 is slidably connected to the second fixed base 11, and a second spring 18 extending along the second direction Y is provided between the positioning block 17 and the second fixed base 11. The positioning block 17 includes a first positioning surface 171 that contacts the first abutting block 23 or the second abutting block 37, and a clearance surface 172 for avoiding the positioning rod 16. This structure allows the positioning block 17 to automatically extend outward and contact the first abutting block 23 or the second abutting block 37 under the action of the second spring 18 when the pressure holding mechanism 10 is installed on the first abutting block 23 or the second abutting block 37, thereby achieving automatic alignment and elastic positioning; at the same time, the clearance surface 172 provides space for the positioning rod 16, avoiding interference between the positioning block 17 and the positioning rod 16, so that the two can cooperate to complete the positioning function without interference.

[0044] Specifically, the second fixed base 11 is provided with an abutment post 113 extending along the first direction X, and the abutment post 113 has a first abutment surface 114 perpendicular to the first direction X. The first abutment surface 114 is used to contact the first abutment block 23 or the second abutment block 37. The positioning block 17 is located between the two vertically arranged abutment posts 113. The abutment post 113 provides a force fulcrum in the first direction X for the pressure holding mechanism 10, forming a complete triple positioning system of "positioning rod 16 + positioning block 17 + abutment post 113". The positioning rod 16 cooperates with the positioning hole to achieve initial alignment and rotation restriction. The positioning block 17 automatically extends under the action of the second spring 18 and fits against the inclined surface of the abutment block to achieve automatic centering and precise positioning. The abutment surface of the abutment post 113 abuts against the abutment block to bear the pressure holding reaction force. The three work together to ensure the positional consistency of the pressure holding mechanism 10 after each installation and the stability during the pressure holding process.

[0045] Specifically, the first positioning surface 171 and the clearance surface 172 are located between the positioning rod 16 and the slider 12. The positioning rod 16 is cylindrical, as shown below. Figure 11 As shown, the clearance surface 172 is curved. This spatial layout and shape design allows the curved clearance surface 172 of the positioning block 17 to maintain smooth contact or a small gap with the cylindrical positioning rod 16 when the positioning block 17 moves along the second direction Y. This ensures that the positioning rod 16 is not stuck or blocked by the positioning block 17, and also makes the overall structure compact. The curved clearance surface 172 design also reduces stress concentration and improves the strength and durability of the positioning block 17. The cooperation between the cylindrical positioning rod 16 and the curved clearance surface 172 allows the positioning block 17 to smoothly avoid the positioning rod 16 when moving along the second direction Y, avoiding jamming and ensuring smooth locking and unlocking actions.

[0046] Furthermore, the first positioning surface 171 is an inclined plane, parallel to the vertical direction Z, and intersects with both the first direction X and the second direction Y, forming a wedge-shaped or conical positioning structure. When the positioning block 17 extends outward under the action of the second spring 18, the inclined first positioning surface 171 can automatically engage with the mating inclined surface on the first abutment block 23 or the second abutment block 37, generating component forces along the first direction X and the second direction Y, thereby achieving bidirectional automatic centering and correction, further improving the installation positioning accuracy of the pressure holding mechanism 10. When the pressure holding mechanism 10 is subjected to a downward pressure holding reaction force, the inclined plane tightly engages with the corresponding inclined plane on the abutment block, generating a component force along the second direction Y, further tightening and automatically locking the pressure holding mechanism 10 to prevent loosening. Compared with the traditional cylindrical pin positioning, this inclined surface engagement positioning method can achieve higher repeatability (micrometer level), and installation and disassembly do not require tools, achieving a balance of "high precision + rapid disassembly and assembly".

[0047] like Figure 7 As shown, the second fixed base 11 is provided with a third recess 112 extending along the second direction Y. One end of the second spring 18 abuts against the positioning block 17, and the other end abuts against the bottom surface of the third recess 112, which can radially limit the second spring 18, preventing the second spring 18 from bending or deflecting during extension and retraction, and ensuring that the positioning block 17 moves smoothly along the second direction Y under the drive of the second spring 18, thereby improving the reliability and repeatability of automatic positioning. On each side, the number of third recesses 112 can be multiple (e.g., 2, 3, etc.), and the multiple third recesses 112 are arranged at intervals in the vertical direction Z. The number of second springs 18 is consistent with the number of third recesses 112, which can further limit the movement of the positioning block 17 along the second direction Y.

[0048] Furthermore, there are four abutment posts 113, with two abutment posts 113 spaced apart in the vertical Z direction. The positioning block 17 is located between the two vertically arranged abutment posts 113, forming a symmetrical layout of "abutment on both sides and positioning in the middle". The positioning block 17 is located in the middle position, ensuring that the automatic centering function and the force support function do not interfere with each other. The overall structure is subjected to balanced force and accurate positioning, which is suitable for application scenarios that require high pressure holding or high frequency of operation.

[0049] like Figure 9 As shown, the end of the connecting plate 13 in the second direction Y includes an inwardly facing first plane 135. (As...) Figure 7 As shown, the surface of the second fixed base 11 that contacts the second spring 18 is the second plane 116. The second part 123 is located between the two second planes 116 in the second direction Y. Figure 13 and Figure 14 As shown, a first receiving space 115 is formed between the second fixed base 11 and the connecting plate 13 for accommodating the positioning block 17. This first receiving space 115 provides a movement path for the positioning block 17. The first plane 135 and the second plane 116 together restrict the movement path of the positioning block 17 in the second direction Y, as described below.

[0050] Specifically, such as Figure 12 As shown, the positioning block 17 includes a connected and perpendicular operating part 173 and a positioning part 174. The operating part 173 is located within the first receiving space 115. The dimension of the operating part 173 in the vertical direction Z is equal to the dimension of the third receiving space 314 in the vertical direction Z. The dimension of the operating part 173 in the first direction X is equal to the dimension of the third receiving space 314 in the first direction X. The dimension of the operating part 173 in the second direction Y is smaller than the dimension of the third receiving space 314 in the second direction Y, and larger than the distance between the first plane 135 and the second plane 116. Therefore, the operating part 173 can drive the positioning block 17 to move within the first receiving space 115 along the second direction Y.

[0051] The operating part 173 is operated by external force at one end facing outward along the second direction Y, and has a fourth recess 1731 extending along the second direction Y at the other end for accommodating the third spring 216. The fourth recess 1731 corresponds to the third recess 112 one-to-one, with one end of the third spring 216 abutting against the bottom surface of the fourth recess 1731 and the other end abutting against the bottom surface of the third recess 112.

[0052] Reference Figure 6The positioning part 174 is located between the first plane 135 and the second plane 116, and the dimension of the positioning part 174 in the second direction Y is smaller than the distance between the first plane 135 and the second plane 116. The first positioning surface 171 and the clearance surface 172 are located at the end of the positioning part 174 away from the operating part 173 in the first direction X. This stepped structure of the operating part 173 and the positioning part 174 ensures that the operating part 173 is precisely guided when sliding in the second direction Y within the first receiving space 115 (the vertical direction Z and the first direction X are limited, and only the second direction Y is movable), while the positioning part 174 extends from the first receiving space 115, ensuring that the sliding direction of the positioning block 17 is unique and the movement is smooth, while the clearance surface 172 and the positioning rod 16 do not interfere with each other.

[0053] This application forms a complete precision positioning and locking mechanism by fixing two positioning rods 16 extending along the first direction X on the connecting plate 13, and setting a positioning block 17 and a second spring 18 that cooperate with the positioning rods 16 on the second fixed seat 11, as well as setting an abutment post 113 with a first abutment surface 114 perpendicular to the first direction X. When the pressure holding mechanism 10 is installed on the first abutment block 23 or the second abutment block 37, the positioning rods 16 are first inserted into the corresponding positioning holes to achieve coarse positioning (ensuring initial alignment accuracy). Then, the positioning block 17 automatically extends under the action of the second spring 18, and its first positioning surface 171 fits against the corresponding inclined surface on the abutment block. The wedge effect of the inclined surface is used to achieve automatic centering and precise positioning (compensating for installation errors to a small range). At the same time, the abutment surface of the abutment post 113 abuts against the corresponding surface on the abutment block, limiting the displacement of the pressure holding mechanism 10 when subjected to pressure holding reaction force, thereby ensuring the positional consistency (high positioning accuracy) and stability of the pressure holding mechanism 10 after each installation.

[0054] like Figure 3As shown, the first abutment block 23 has multiple second abutment surfaces 231, two first positioning holes 232, and two second positioning surfaces 233. The two first positioning holes 232 are used to accommodate two positioning rods 16 respectively. The second abutment surfaces 231 are used to abut against the first abutment surfaces 114 and are located above and below the first positioning holes 232. The second positioning surfaces 233 are used to fit against the first positioning surfaces 171. The second positioning surfaces 233 are inclined planes, parallel to the vertical direction Z, and intersect with both the first direction X and the second direction Y, forming a high-precision docking interface that perfectly matches the positioning system of the pressure-holding mechanism 10. Two first positioning holes 232 engage with two positioning rods 16, restricting the rotational freedom of the pressure-holding mechanism 10 in the horizontal plane. Second abutment surfaces 231 are distributed above and below the positioning holes, simultaneously abutting from both directions to ensure balanced force. When the inclined second positioning surface 233 is in contact with the inclined first positioning surface 171, the guiding effect of the inclined surface achieves automatic centering and alignment during installation. Even minor initial placement deviations are automatically corrected during the inclined surface contact process, ensuring precise alignment between the pressure-holding rod 15 and the first opening 211 in standby mode. This interface design allows the pressure-holding mechanism 10 to be quickly and accurately installed onto the first abutment block 23 with high repeatability and without the need for any tools.

[0055] Accordingly, the second abutment block 37 is provided with multiple third abutment surfaces 371, two second positioning holes 372, and two third positioning surfaces 373. The two second positioning holes 372 are respectively used to accommodate two positioning rods 16. The third abutment surfaces 371 are used to abut against the first abutment surface 114 and are located above and below the second positioning holes 372. The third positioning surfaces 373 are used to fit against the first positioning surface 171. The third positioning surface 373 is an inclined plane, parallel to the vertical direction Z, and intersects with both the first direction X and the second direction Y. The second abutment block 37 is provided with a docking interface similar in structure to the first abutment block 23 but used for the working position, and the third positioning surface 373 is also an inclined plane. When the pressure-holding mechanism 10 is removed from the first abutment block 23 in the standby position and installed on the second abutment block 37 in the working position, the same positioning rod 16, positioning block 17, and abutment post 113 structure can cooperate with the corresponding interface on the second abutment block 37 to achieve the same fast, accurate, and high-precision positioning and locking. This "interface standardization" design allows the pressure-holding mechanism 10 to be interchangeable among multiple abutment blocks. As long as the position and size of the positioning holes, abutment surfaces, and positioning surfaces on each abutment block are consistent, the modular goal of "one pressure-holding mechanism 10 shared by multiple workstations" can be achieved, and the same positioning accuracy and pressure-holding verticality can be guaranteed regardless of the workstation.

[0056] In a specific application scenario, the pressure holding mechanism 10 is first placed near the second abutment block 37, so that the pressure holding rod 15 is located on one side of the second workpiece 301 in the first direction X, and the two positioning rods 16 are aligned with the two first positioning holes 232, and the first abutment surface 114 is aligned with the second abutment surface 231; then, a force is applied inward along the second direction Y to the operating part 173 of the positioning block 17, and the pressure holding mechanism 10 is pushed along the first direction X, so that the multiple pressure holding surfaces 151 are located directly below the inner surface of the second workpiece 301 that needs to be pressured, and the two positioning rods 16 are inserted into the two first positioning holes 232, the first abutment surface 114 abuts against the second abutment surface 231, the operating part 173 of the positioning block 17 is released, and the first positioning surface 171 and the third positioning surface 373 are attached under the action of the third spring 216, and the pressure holding surface 151 presses the inner surface of the second workpiece 301 that needs to be pressured upward under the action of the first spring 14.

[0057] In this embodiment, such as Figure 4 and Figure 5 As shown, the first fixing mechanism 21 includes a platform 212 and a pressure block 213. The platform 212 is used to place the first workpiece 201. The pressure block 213 is located on the side of the platform 212 away from the mounting position 22 in the second direction Y. The pressure block 213 includes a body 214 slidably disposed on the base 20 in the vertical direction Z, a third blocking block 215 fixedly connected to the base 20, and a third spring 216 disposed between the body 214 and the third blocking block 215. The top of the body 214 is provided with a first receiving hole 2141 extending in the vertical direction Z, and the third blocking block 215 is located on one side of the body 214 in the first direction X, with at least a portion of the third blocking block 215 extending into the first receiving hole 2141. The upper end of the third spring 216 abuts against the third blocking block 215, and the lower end abuts against the bottom surface of the first receiving hole 2141, forming a purely mechanical spring-type pressing structure. It does not require a cylinder or motor drive, and can continuously and stably press the first workpiece 201 by relying on the elastic force of the third spring 216. It is low in cost, does not occupy an additional power source, and the built-in spring design avoids external interference, improving reliability and service life.

[0058] In this embodiment, such as Figure 18 As shown, the first fixing base 31 has a second receiving space 313 and third receiving spaces 314 located on both sides of the second receiving space 313. The second receiving space 313 has a first groove 3151 for placing the second workpiece 301. The first fixing base 31 also has a second through hole 316 connecting the second receiving space 313 and the third receiving space 314. The first fixing base 31 has a plurality of first magnetic elements 318 and two third positioning holes 319 spaced apart in the second direction Y, the third positioning holes 319 penetrating the first fixing base 31. Figure 3As shown, the mounting position 22 includes multiple second magnetic elements 221 and two first positioning pins 222 arranged at intervals in the second direction Y. The third positioning hole 319 cooperates with the first positioning pins 222, and the second magnetic elements 221 and the first magnetic elements 318 are magnetically attracted to each other, so that the installation and removal of the second fixing mechanism 30 and the base 20 do not require any tools. The first fixing seat 31 can be automatically attracted and locked when placed in place. When removing, it is only necessary to overcome the magnetic attraction force and lift it upwards. The changeover time is shortened from minutes to seconds.

[0059] Specifically, the base 20 has two fourth positioning holes 24 on the diagonal, which are used to install the multi-point pressure holding device onto the target equipment (such as the workbench of an automated production line). The two fourth positioning holes 24 arranged diagonally effectively restrict the rotational freedom of the multi-point pressure holding device in the horizontal plane, ensuring the relative positional accuracy of the multi-point pressure holding device with the upstream and downstream equipment.

[0060] Specifically, the second fixing mechanism 30 also includes a blocking block 32, a limiting block 33, and an operating block 35. The blocking block 32 is detachably installed in the second receiving space 313 to fix the second workpiece 301 within the first groove 3151. The blocking block 32 has a limiting step 321. The limiting block 33 is slidably disposed in the third receiving space 314, having a locked position and an unlocked position. A fourth spring 34 is provided between the side of the limiting block 33 away from the second through hole 316 and the first fixing seat 31. Figure 18 and Figure 19 As shown, when the limiting block 33 is in the locked position, the fourth spring 34 pushes the limiting block 33 through the second through hole 316 to engage with the limiting step 321, thereby fixing the sealing block 32 to the first fixing seat 31. When the limiting block 33 is in the unlocked position, the fourth spring 34 is compressed, the limiting block 33 separates from the limiting step 321, and the sealing block 32 can be disassembled. The operating block 35 is fixedly connected to the limiting block 33 and is used to move the limiting block 33 between the locked and unlocked positions.

[0061] The second fixing mechanism 30 utilizes the fourth spring 34 to push the limiting block 33 through the second through hole 316 and cooperate with the limiting step 321 to achieve automatic locking between the sealing block 32 and the first fixing seat 31. When disassembly is required, simply operate the operating block 35 fixedly connected to the limiting block 33 to drive the limiting block 33 to compress the fourth spring 34 to achieve quick unlocking. Thus, the compact structure of "side sliding locking + compression of the fourth spring 34 unlocking" realizes the quick disassembly and assembly of the sealing block 32 and the convenient fixing of the second workpiece 301. At the same time, the multiple first magnetic parts 318 and at least two third positioning holes 319 provided on the first fixing seat 31 realize the quick positioning and magnetic installation between the second fixing mechanism 30 and the base 20. The entire process can be completed without any tools, including loading and unloading the second fixing mechanism 30, assembling and disassembling the sealing block 32, and picking up and placing the second workpiece 301. The operation is simple, significantly improving the efficiency of production line changeover and the convenience of operation. Moreover, the side locking structure does not occupy the upper or lower space, has a small space occupation, and is easy to connect with other automated equipment.

[0062] In this embodiment, such as Figure 15 and Figure 16 As shown, the first fixing base 31 includes an operating surface 311 and a connecting surface 312 that are opposite to each other. The second receiving space 313, the third receiving space 314, and the first magnetic element 318 are all disposed on the connecting surface 312. The third positioning hole 319 passes through the operating surface 311 and the connecting surface 312, so that the connecting surface 312 of the second fixing mechanism 30 concentrates all the functional structures related to the installation of the base 20 (mainly including the third positioning hole 319 and the first magnetic element 318), which facilitates quick docking with the base 20; while the operating surface 311 is used for manual or automated operation.

[0063] like Figure 15 and Figure 18 As shown, the third receiving space 314 includes a second receiving hole 3141 that extends between the operating surface 311 and the connecting surface 312. At least a portion of the operating block 35 is located within the second receiving hole 3141 and on the operating surface 311, allowing the operator or automated actuator to directly contact and drive the operating block 35 from the operating surface 311 without having to operate from the side or bottom, which greatly improves the ergonomic convenience of operation and the feasibility of automated integration.

[0064] like Figure 16As shown, a baffle 36 is fixedly connected to the connecting surface 312 to shield the third accommodating space 314. This effectively prevents dust, debris, or foreign objects from entering the third accommodating space 314, avoiding jamming or wear of moving parts such as the limiting block 33 and the fourth spring 34 due to foreign object intrusion. This improves the reliability and service life of the second fixing mechanism 30 during long-term use. Simultaneously, after the baffle 36 closes the third accommodating space 314, the connecting surface 312 of the second fixing mechanism 30 becomes flatter, facilitating a close fit with the base 20 and avoiding problems such as weak adhesion or unstable positioning caused by an opening in the accommodating space.

[0065] In this embodiment, such as Figure 18 As shown, the first groove 3151 extends along the first direction X, and the two third receiving spaces 314 are located on both sides of the second receiving space 313 in the second direction Y, forming a symmetrical layout of "groove in the center, locked on both sides". This layout allows the sealing block 32 to be installed in the second receiving space 313, and the limiting blocks 33 on both sides can lock the sealing block 32 symmetrically from both left and right directions at the same time, with balanced force, avoiding the problem of the sealing block 32 being skewed or unevenly stressed due to unilateral locking. It is especially suitable for fixing long strip-shaped sealing blocks 32 and long strip-shaped second workpieces 301, improving the fixing stability and reliability.

[0066] like Figure 19 As shown, the sealing block 32 has two limiting steps 321 on each side extending along the first direction X. Every two limiting steps 321 are aligned in the second direction Y, meaning that each side of the sealing block 32 has two limiting steps 321, for a total of four limiting steps 321. This multi-point limiting design, in conjunction with the limiting blocks 33 in the two third accommodating spaces 314, ensures that the sealing block 32 is constrained by four evenly distributed locking points along its length (i.e., the first direction X). Compared to single-point or two-point locking, this design can more effectively prevent the sealing block 32 from warping, twisting, or partially loosening when subjected to external forces, making it particularly suitable for the stable fixing of long or large-sized sealing blocks 32.

[0067] Specifically, such as Figure 17 As shown, each third accommodating space 314 contains an operating block 35 and two limiting blocks 33. The limiting blocks 33 extend along the second direction Y, and the two ends of the operating block 35 are fixedly connected to the two limiting blocks 33 along the first direction X, forming a linkage structure with the operating block 35 in the center and the two ends connected to the limiting blocks 33. When the operator pushes or pulls the operating block 35, the two limiting blocks 33 can move synchronously, realizing the simultaneous locking or releasing of the two limiting steps 321 on the same side. This design not only ensures the reliability of multi-point locking but also simplifies the operation. Only one operating block 35 needs to be operated to control the two limiting blocks 33 on that side, eliminating the need for separate operation and improving the efficiency of assembly and disassembly.

[0068] Specifically, two second positioning holes 372 are spaced apart on both sides of the second receiving space 313 in the second direction Y. Two third positioning holes 319 are spaced apart on both sides of the second receiving space 313 in the second direction Y. The third positioning holes 319 are located on the side of the third receiving space 314 away from the second abutment block 37 in the first direction X, so that one end is positioned by the second abutment block 37 and the other end is positioned by the third positioning hole 319. Compared with single-end positioning, this two-end positioning method can more effectively restrict the rotational freedom of the second fixing mechanism 30 in the horizontal plane, ensuring the consistency of the position of the second fixing mechanism 30 when it is installed on the base 20. At the same time, placing the third positioning hole 319 on the side of the third receiving space 314 away from the second abutment block 37 makes the force on the entire second fixing mechanism 30 more balanced, avoiding the problem of installation instability caused by the excessive concentration of positioning points.

[0069] In this embodiment, the second fixing mechanism 30, which is easy to assemble and disassemble, further includes a support plate 315 disposed in the second receiving space 313, and the support plate 315 is provided with the first groove 3151. The support plate 315 is detachably fixedly connected to the first fixing seat 31. This modular design allows for the replacement of only the support plate 315 with the corresponding groove when processing second workpieces 301 of different sizes or shapes, without the need to replace the entire first fixing seat 31 or redesign the second fixing mechanism 30, greatly improving the versatility and changeover efficiency of the second fixing mechanism 30. At the same time, as a wear-prone part that is in direct contact with the second workpiece 301, the support plate 315 can be replaced separately after long-term use, reducing maintenance costs.

[0070] In addition, such as Figure 18 and Figure 19 As shown, the bearing plate 315 is also provided with second positioning pins 3152 diagonally, and the sealing block 32 is provided with fifth positioning holes 322 at corresponding positions. Thus, through the cooperation of the fifth positioning holes 322 and the second positioning pins 3152, the sealing block 32 can be quickly installed onto the first fixed seat 31. Figure 20 As shown, the side of the sealing block 32 opposite to the operating surface 311 is provided with a second groove 323, which can cooperate with the first groove 3151 to accommodate the second workpiece 301.

[0071] It should be noted that in the description of this specification, the terms "first," "second," etc., are used only for descriptive purposes and to distinguish similar objects; there is no order between them, nor should they be construed as indicating or implying relative importance. Furthermore, in the description of this specification, unless otherwise stated, "a plurality of" means two or more.

[0072] Any numerical values ​​cited herein include all values ​​ranging from a lower limit to an upper limit, increasing by one unit, with at least two units between any lower and any higher value. For example, if the quantity of a component or the value of a process variable (e.g., temperature, pressure, time, etc.) is described as being from 1 to 90, preferably from 20 to 80, more preferably from 30 to 70, the purpose is to illustrate that values ​​such as 15 to 85, 22 to 68, 43 to 51, 30 to 32 are also explicitly listed in this specification. For values ​​less than 1, a unit is appropriately considered to be 0.0001, 0.001, 0.01, 0.1, etc. These are merely examples intended for explicit expression, and it can be assumed that all possible combinations of values ​​listed between the minimum and maximum values ​​are explicitly described in this specification in a similar manner.

[0073] Unless otherwise stated, all ranges include the endpoints and all numbers between them. The terms "approximately" or "about" used with ranges apply to both endpoints of the range. Thus, "approximately 20 to 30" is intended to cover "approximately 20 to approximately 30," including at least the specified endpoints.

[0074] All articles and references disclosed herein, including patent applications and publications, are incorporated herein by reference for various purposes. The term “substantially constitutes…” used to describe a combination should include the identified elements, components, parts, or steps, as well as other elements, components, parts, or steps that do not substantially affect the essential novelty of the combination. The use of the terms “comprising” or “including” to describe combinations of elements, components, parts, or steps herein also contemplates embodiments substantially constituted by such elements, components, parts, or steps. The use of the term “may” herein is intended to indicate that any described attribute included by “may” is optional.

[0075] Multiple elements, components, parts, or steps can be provided by a single integrated element, component, part, or step. Alternatively, a single integrated element, component, part, or step can be divided into multiple separate elements, components, parts, or steps. The use of "a" or "an" to describe an element, component, part, or step does not imply the exclusion of other elements, components, parts, or steps.

[0076] It should be understood that the above description is for illustrative purposes and not for limitation. Many embodiments and applications beyond the provided examples will be apparent to those skilled in the art upon reading the above description. Therefore, the scope of this teaching should not be determined by reference to the above description, but rather by reference to the appended claims and the full scope of their equivalents. For purposes of completeness, all articles and references, including patent applications and publications, are incorporated herein by reference. The omission of any aspect of the subject matter disclosed herein in the preceding claims is not intended as a waiver of that subject matter, nor should it be construed as an indication that the inventors have not considered that subject matter as part of the disclosed inventive subject matter.

Claims

1. A multi-point pressure holding device, characterized in that, include: The base has a mounting position and a first fixing mechanism for fixing a first workpiece; a first abutting block is fixed to one end of the first fixing mechanism along a first direction; the top surface of the base has a first opening extending along the first direction; the mounting position is located on one side of the first fixing mechanism in a second direction; the first opening is located between the first fixing mechanism and the mounting position; the first direction, the second direction, and the vertical direction are mutually perpendicular. The second fixing mechanism for fixing the second workpiece includes a first fixing seat detachably fixed to the mounting position; a second abutting block is fixed to one end of the first fixing seat along a first direction; the first fixing seat is provided with a first groove extending along the first direction at one end of the second abutting block for accommodating the second workpiece; the second workpiece is provided with a first through hole extending along the first direction. A pressure-holding mechanism includes a second fixed seat detachably fixed to the first abutment block or the second abutment block; a pressure-holding rod is slidably connected to the second fixed seat in the vertical direction, and a first spring is provided between the second fixed seat and the pressure-holding rod; the pressure-holding rod extends along a first direction and has a plurality of horizontally upward-facing pressure-holding surfaces at one end away from the second fixed seat, and the plurality of pressure-holding surfaces are spaced apart in the first direction; when the second fixed seat is fixed to the first abutment block, it is in a standby position, and the pressure-holding rod is retracted into the first opening; when the second fixed seat is fixed to the second abutment block, it is in a working position, and the pressure-holding rod extends into the first through hole of the second workpiece, and the pressure-holding surface contacts the inner surface of the second workpiece; A slide rail extending vertically is fixedly connected to the second fixed base; a slider is slidably connected to the slide rail, and the slider has a first recess extending vertically to accommodate the first spring; the slide rail is offset from the middle position of the second fixed base in a second direction, and the side of the slide rail fixed to the second fixed base is perpendicular to the second direction; the slider is located on the side of the slide rail facing the mounting position in the second direction; the pressure holding rod is fixedly connected to the slider; The pressure-holding mechanism further includes a connecting plate fixedly connected to the second fixed seat; the connecting plate is fixedly connected to two positioning rods extending in a first direction, and the two positioning rods are spaced apart on both sides of the slider in a second direction; the second fixed seat is slidably connected to a positioning block, and a second spring extending in a second direction is provided between the positioning block and the second fixed seat; the positioning block includes a first positioning surface that contacts the first abutting block or the second abutting block, and a clearance surface for avoiding the positioning rods; the second fixed seat is provided with an abutting post extending in the first direction, and the abutting post has a first abutting surface perpendicular to the first direction; the positioning block is located between two vertically arranged abutting posts; a first receiving space is formed between the second fixed seat and the connecting plate for receiving the positioning block.

2. The multi-point pressure holding device according to claim 1, characterized in that, The pressure-holding surface is rectangular, and the heights of the multiple pressure-holding surfaces are different.

3. The multi-point pressure holding device according to claim 2, characterized in that, The slider includes a first part and a second part that are connected and perpendicular to each other. The first part is perpendicular to the second direction and is slidably connected to the slide rail. The first part is connected to the second part at the middle position in the second direction. The bottom of the second part is provided with the first recess. The first recess and the slide rail are spaced apart and aligned in the first direction.

4. The multi-point pressure holding device according to claim 3, characterized in that, The connecting plate includes a first blocking block located below the second part and a second blocking block located above the second part; the distance between the first blocking block and the second blocking block is greater than the vertical dimension of the second part; one end of the first spring abuts against the first blocking block, and the other end abuts against the bottom surface of the first recess.

5. The multi-point pressure holding device according to claim 4, characterized in that, The connecting plate includes an inwardly facing first plane at its end in the second direction; the side of the second fixing seat that contacts the second spring is a second plane; the second part is located between two second planes in the second direction; the first positioning surface and the clearance surface are located between the positioning rod and the slider; the positioning rod is cylindrical, and the clearance surface is curved; the first positioning surface is an inclined plane, parallel to the vertical direction, and intersects both the first and second directions.

6. The multi-point pressure holding device according to claim 5, characterized in that, The positioning block includes a connected and perpendicular operating part and a positioning part; the operating part is located within the first accommodating space; the vertical dimension of the operating part is equal to the vertical dimension of the third accommodating space, the vertical dimension of the operating part is equal to the vertical dimension of the third accommodating space, the vertical dimension of the operating part is equal to the vertical dimension of the third accommodating space, the vertical dimension of the operating part is smaller than the vertical dimension of the third accommodating space, and larger than the distance between the first plane and the second plane; The positioning part is located between the first plane and the second plane, and the size of the positioning part in the second direction is smaller than the distance between the first plane and the second plane; the first positioning surface and the avoidance surface are located at the end of the positioning part away from the operating part in the first direction.

7. The multi-point pressure holding device according to claim 6, characterized in that, The first abutting block has multiple second abutting surfaces, two first positioning holes, and two second positioning surfaces; the two first positioning holes are respectively used to accommodate two positioning rods, the second abutting surfaces are used to abut against the first abutting surfaces and are located above and below the first positioning holes; the second positioning surfaces are used to fit against the first positioning surfaces, the second positioning surfaces are inclined planes, the second positioning surfaces are parallel to the vertical direction, and intersect with both the first and second directions.

8. The multi-point pressure holding device according to claim 1, characterized in that, The first fixing mechanism includes a platform and a pressure block. The platform is used to place the first workpiece. The pressure block is located on the side of the platform away from the mounting position in a second direction. The pressure block includes a body that is slidably disposed on the base in a vertical direction, a third blocking block that is fixedly connected to the base, and a third spring disposed between the body and the third blocking block. The top of the body is provided with a first receiving hole extending in a vertical direction. The third blocking block is located on one side of the body in a first direction and at least part of the third blocking block extends into the first receiving hole. The upper end of the third spring abuts against the third blocking block, and the lower end abuts against the bottom surface of the first receiving hole.

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