A fixed pressure maintaining device

Abstract

The application discloses a fixed pressure maintaining device, relates to the field of fixing devices, and comprises a base, a first abutting block fixed to one end of the base along a first direction at a first mounting position, a first fixed carrier comprising a first fixing seat detachably fixed to the first mounting position, a second fixed carrier comprising a second fixing seat detachably fixed to a second mounting position, a first through hole arranged on the upper surface of the second fixing seat, a pressure maintaining mechanism comprising a third fixing seat detachably fixed to the first abutting block or the second abutting block, a pressure maintaining rod slidingly connected to the third fixing seat in a vertical direction, and a first spring arranged between the third fixing seat and the pressure maintaining rod, wherein the pressure maintaining rod is provided with a pressure maintaining surface at an end away from the third fixing seat, and the pressure maintaining surface is arranged horizontally upwards. The fixed pressure maintaining device does not need an external power source, can realize multi-station sharing, rapid interchanging and accurate positioning, and can provide sufficient and vertically directed pressure maintaining force in a narrow space.

Description

Technical Field

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

[0002] In the automated production process of electronic products, it is often necessary to fix multiple workpieces (such as housings, screens, batteries, internal supports, etc.) separately before assembly or pressure holding. For example, on the assembly line of mobile phones or tablets, the mid-frame and internal electronic components need to be fixed to one carrier first, and then the screen module needs to be fixed to another carrier. Then, a certain pressure is applied to the screen module and held for a period of time to ensure that it is firmly bonded to the mid-frame.

[0003] In existing equipment, the fixed carrier and pressure holding mechanism are usually designed and operated independently. Each station is equipped with a dedicated fixed carrier, and each workpiece requiring pressure holding is equipped with a dedicated pressure holding mechanism. This model has the following problems: First, multiple pressure holding mechanisms are usually driven by cylinders or motors, which not only requires air or power sources and control systems, resulting in high equipment costs and large space occupation, but also often unstable pressure holding. Second, when the production line needs to change to produce different specifications of products, multiple pressure holding mechanisms need to be adjusted or replaced simultaneously, resulting in low changeover efficiency and cumbersome operation. Third, the pressure holding mechanism is usually fixedly installed, making it impossible to flexibly adjust and use it between different stations, and its pressure holding direction (usually from top to bottom) is easily affected by the workpiece's own weight and the flatness of the installation, making it difficult to guarantee the verticality of pressure holding. In addition, for workpieces with narrow internal spaces (such as the inner surface of screen modules), traditional pressure holding mechanisms are difficult to extend into to apply pressure, or require complex transmission mechanisms to achieve this.

[0004] Therefore, how to achieve multi-station sharing, rapid interchange, and precise positioning of the pressure holding mechanism without the need for an external power source or relying on cylinders or motors, while providing sufficient and vertically oriented pressure in a confined space, has become a technical problem that urgently needs to be solved in this field. Summary of the Invention

[0005] In view of the shortcomings of the prior art, one object of this specification is to provide a fixed pressure holding device that does not require an external power source, can be used in multiple stations, can be quickly interchanged, and can be accurately positioned, while providing sufficient and vertically oriented pressure holding force in a confined space.

[0006] To achieve the above objectives, this specification provides a fixed pressure-holding device, comprising: The base includes an adjacent first mounting position and a second mounting position; a first abutting block is fixed to one end of the first mounting position along a first direction; the second mounting position is located on one side of the first mounting position in a second direction; the first direction, the second direction, and the vertical direction are mutually perpendicular. A first fixing carrier for fixing a first workpiece and a second workpiece includes a first fixing seat that is detachably fixed to the first mounting position; the bottom surface of the first fixing seat is provided with a clearance space, and the base is provided with a first groove at a position corresponding to the clearance space; The second fixing carrier for fixing the third workpiece includes a second fixing seat that is detachably fixed to the second mounting position; the upper surface of the second fixing seat is provided with a first through hole that exposes one side of the third workpiece; a second abutment block is fixed to one end of the second fixing seat along a first direction. The pressure-holding mechanism includes a third fixed seat detachably fixed to the first abutment block or the second abutment block; the third fixed seat is slidably connected to a pressure-holding rod in the vertical direction, and a first spring is provided between the third fixed seat and the pressure-holding rod; the pressure-holding rod has a pressure-holding surface for contacting a third workpiece at one end away from the third fixed seat, and the pressure-holding surface is horizontally upward; when the third fixed seat is fixed to the first abutment block, it is in a standby position, and the pressure-holding rod is housed in the first groove and the clearance space; when the third fixed seat is fixed to the second abutment block, it is in a working position, the pressure-holding rod extends into the first through hole, and the pressure-holding surface abuts against the inner surface of the third workpiece.

[0007] In a preferred embodiment, a first slide rail extending vertically is fixedly connected to the third fixed base; a slider is slidably connected to the first slide rail, and a first recess extending vertically is provided in the slider; the pressure-holding mechanism further includes a connecting plate fixedly connected to the third fixed base; the connecting plate includes a first sealing block located below the first recess and a blocking block located on the other side of the slider; the distance between the first sealing block and the blocking block is greater than the vertical dimension of the slider; a first spring is disposed in the first recess; one end of the first spring abuts against the first sealing block, and the other end abuts against the bottom surface of the first recess; the pressure-holding rod is fixedly connected to the side of the slider away from the first slide rail; the pressure-holding rod includes a horizontal section extending in a first direction and an inclined section connecting the horizontal section and the pressure-holding surface, the height of the horizontal section being higher than the pressure-holding surface.

[0008] In a preferred embodiment, the first slide rail is located at the middle position of the third fixed base in the second direction; the slider is located on the side of the first slide rail facing the base in the first direction.

[0009] 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 third 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 third 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 third 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.

[0010] In a preferred embodiment, the first positioning surface and the avoidance surface are located between the positioning rod and the slider; the positioning rod is cylindrical, and the avoidance surface is curved; the first positioning surface is an inclined plane, parallel to the vertical direction, and intersects with both the first and second directions.

[0011] 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.

[0012] In a preferred embodiment, the second abutting block is provided with multiple third abutting surfaces, two second positioning holes, and two third positioning surfaces; the two second positioning holes are respectively used to accommodate two positioning rods, and the third abutting surfaces are used to abut against the first abutting surfaces and are located above and below the second positioning holes; the third positioning surfaces are used to fit against the first positioning surfaces, and the third positioning surfaces are inclined planes, parallel to the vertical direction, and intersect with both the first and second directions.

[0013] In a preferred embodiment, the first fixing seat is provided with a second groove and a second slide rail; the second groove extends along a first direction and is used to place a first workpiece; the second slide rail extends along a second direction and is located on the side of the second groove away from the second fixing carrier in the second direction; the first fixing carrier further includes a first push block, a connecting seat, a bearing block, and a second push block; the first push block is slidably connected to the second slide rail and is used to fix the first workpiece in the second direction; the connecting seat is connected to the first fixing seat; the connecting seat is provided with a third slide rail and a fourth slide rail extending along the second direction, the third slide rail and the fourth slide rail being spaced apart in the first direction; the bearing block is slidably connected to the third slide rail; the bearing block is provided with a bearing portion, the bearing portion including a bearing surface and a first protrusion and a second protrusion disposed adjacent to each other on the bearing surface; the second push block is slidably connected to the fourth slide rail; the second push block is disposed opposite to the second protrusion; the first protrusion, the second protrusion, and the second push block are used to fix the second workpiece on the bearing surface; when the first push block, the bearing block, and the second push block are all in the working position, the bearing portion is located above the second groove, and there is a gap between the lower surface of the bearing portion and the upper surface of the first workpiece.

[0014] In a preferred embodiment, the first fixing base is provided with a plurality of first magnetic elements and two third positioning holes spaced apart in a first direction, the third positioning holes penetrating the first fixing base; the second slide rail, the third slide rail and the fourth slide rail are located between the two third positioning holes; the first mounting position includes a plurality of second magnetic elements and two first positioning pins spaced apart in a first direction; the third positioning holes cooperate with the first positioning pins, and the second magnetic elements and the first magnetic elements are magnetically attracted to each other.

[0015] In a preferred embodiment, the second fixing base has a first receiving space and second receiving spaces located on both sides of the first receiving space; the first receiving space has a third groove for placing a third workpiece; the second fixing base also has a second through hole connecting the first receiving space and the second receiving space; the second fixing base has a plurality of third magnetic elements and two fourth positioning holes spaced apart in a second direction, the fourth positioning holes penetrating the first fixing base; the second mounting position includes a plurality of fourth magnetic elements and two second positioning pins spaced apart in a second direction; the fourth positioning holes cooperate with the second positioning pins, and the fourth magnetic elements and the third magnetic elements are magnetically attracted to each other; the second fixing carrier also includes a second sealing block, a limiting block, and an operating block; the second sealing block is detachable. The first receiving space is installed to fix the third workpiece in the third groove; the second sealing block is provided with a limiting step; the limiting block is slidably disposed in the second receiving space and has a locked position and an unlocked position; a third spring is provided between the side of the limiting block away from the second through hole and the second fixing seat; when the limiting block is in the locked position, the third spring pushes the limiting block through the second through hole to cooperate with the limiting step, so that the second sealing block is fixed to the second fixing seat; when the limiting block is in the unlocked position, the third spring is compressed, the limiting block separates from the limiting step, and the second sealing block can be disassembled; the operating block is fixedly connected to the limiting block and is used to drive the limiting block to move between the locked position and the unlocked position.

[0016] Beneficial effects

[0017] The pressure-holding device provided in this embodiment is equipped with a base having a first mounting position and a second mounting position. A first abutting block is fixed at the first mounting position, and a second abutting block is set at the second mounting position. At the same time, a first fixing carrier (for fixing the first workpiece and the second workpiece) and a second fixing carrier (for fixing the third workpiece) are detachably installed at the two mounting positions respectively. The pressure-holding mechanism is designed to be detachably installed on either the first abutting block or the second abutting block. The pressure-holding mechanism adopts a pure mechanical spring structure without any external power source (no cylinder, no motor, no air source). It only relies on the elastic force generated by the compression of the first spring to provide the pressure holding force, thereby achieving a large pressure output in a small space.

[0018] The modular design of a pressure-holding mechanism, shared by multiple workstations, is achieved through the detachable connection between the pressure-holding mechanism and the two abutment blocks. The two fixed carriers can also be replaced as needed. When switching workstations, the pressure-holding mechanism can be easily changed by simply detaching it from one abutment block and installing it onto the other, requiring no tools and enabling quick and easy interchangeability. During installation, the pressure-holding mechanism achieves high-precision, repeatable positioning through the precise fit between its structure and the abutment blocks, ensuring the consistency of the pressure-holding rod's position after each installation. The pressure-holding rod is slidably connected to the third fixed seat and supported by a first spring. Its sliding direction is ensured to be perpendicular by the structure itself, keeping the pressure-holding surface always horizontal and the pressure-holding direction perpendicular to the inner surface of the workpiece, thus ensuring pressure-holding perpendicularity.

[0019] When the pressure holding mechanism is installed on the first abutment block, it is in the standby position. The pressure holding rod is stored in the clearance space on the bottom surface of the first fixed seat and in the first groove of the base, without occupying extra space and avoiding interference. When the pressure holding mechanism is installed on the second abutment block, it is in the working position. The pressure holding rod extends upward into the first through hole of the second fixed seat, so that the horizontally upward-facing pressure holding surface abuts against the inner surface of the third workpiece and applies pressure from below. Thus, in a purely mechanical and power-free manner, it simultaneously achieves multiple technical effects such as interchangeability and quick disassembly and assembly, high-precision positioning, high 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 workpieces such as precision modules and thin-walled components in electronic products such as mobile phones and computers.

[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 fixed pressure-holding device provided in this embodiment; Figure 2 This is a schematic diagram of another fixed 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 This is a three-dimensional structural diagram of a pressure-holding mechanism provided in this embodiment; Figure 5 This is a schematic diagram of the structure of a third fixing base provided in this embodiment; Figure 6 This is a schematic diagram of the structure of a slider provided in this embodiment; Figure 7 This is a schematic diagram of the structure of a connecting plate provided in this embodiment; Figure 8 for Figure 4 A schematic diagram of the structure after removing the pressure holding rod and slider; Figure 9 This is a schematic diagram of the structure of a positioning block provided in this embodiment; Figure 10 This is a three-dimensional structural diagram of a first fixed carrier provided in this embodiment; Figure 11 for Figure 10 A schematic diagram of the structure when the first fixed carrier is loaded with the first workpiece and the second workpiece; Figure 12 for Figure 10 A three-dimensional structural diagram from another perspective; Figure 13 for Figure 10 A three-dimensional structural diagram from another perspective; Figure 14 This is a three-dimensional structural diagram of a first fixing base provided in this embodiment; Figure 15 for Figure 14 A three-dimensional structural diagram from another perspective; Figure 16 This is a schematic diagram of the structure of a second fixed carrier provided in this embodiment; Figure 17 for Figure 16 A schematic diagram of the structure when the second fixed carrier is loaded with the third workpiece; Figure 18 for Figure 17 Another structural diagram from a different perspective; Figure 19 for Figure 18 A schematic diagram of the structure after removing the baffle. Figure 20 for Figure 19 A schematic diagram of the structure after removing the second load-bearing plate; Figure 21 This is a schematic diagram of the structure of a second fixing base provided in this embodiment; Figure 22 for Figure 21 Another structural diagram from a different perspective; Figure 23 This is a schematic diagram of the structure of a second sealing block provided in this embodiment; Figure 24 for Figure 23 Another structural diagram from a different perspective; Figure 25 for Figure 9 A structural diagram from another perspective; Figure 26 for Figure 4 A structural diagram from another perspective; Figure 27 for Figure 26 A schematic diagram of the structure after removing one positioning block.

[0025] Explanation of reference numerals in the attached figures: 10. Pressure holding mechanism; 11. Third fixed seat; 111. First slide rail; 112. Third recess; 113. Abutting post; 114. First abutting surface; 115. Third receiving space; 12. Sliding block; 121. First recess; 13. Connecting plate; 131. First sealing block; 132. Second recess; 133. Blocking block; 134. Mounting hole; 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; 19. Connecting block; 20. First fixed carrier; 201. First workpiece; 202. Second workpiece; 21. First fixed base; 211. Second slide rail; 212. Fifth slide rail; 213. Fifth magnetic component; 214. Fourth spring; 215. Third positioning hole; 216. Clearance space; 217. First magnetic component; 22. First bearing plate; 221. Second groove; 23. First push block; 231. Sixth magnetic component; 24. Connecting base; 241. Third slide rail; 242. Fourth slide rail; 243. Seventh magnetic component; 244. Fifth spring; 245. Ninth magnetic component; 246. Sixth spring; 25. Bearing block; 251. Bearing part; 252. Bearing surface; 253. First protrusion; 254. Second protrusion; 255. Tenth magnetic component; 256. Fourth groove; 26. Second push block; 261. Eighth magnetic component; 262. Push arm; 263. Push surface; 30. Second fixed carrier; 301. Third workpiece; 31. Second fixed base; 311. Operating surface; 312. Connecting surface; 313. First accommodating space; 314. Second accommodating space; 3141. Accommodating hole; 315. Second bearing plate; 3151. Third groove; 3152. Third positioning pin; 316. Second through hole; 317. First through hole; 318. Third magnetic component; 319. Fourth positioning hole; 32. Second sealing block; 321. Limiting step; 322. Fifth positioning hole; 323. Fifth groove; 33. Limiting block; 34. Third spring; 35. Operating block; 36. Baffle; 37. Second abutment block; 371. Third abutment surface; 372. Second positioning hole; 373. Third positioning surface; 40. Base; 41. First mounting position; 411. Second magnetic component; 412. First positioning pin; 42. Second mounting position; 421. Fourth magnetic component; 422. Second positioning pin; 43. First abutting block; 431. Second abutting surface; 432. First positioning hole; 433. Second positioning surface; 44. First groove; 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 24 This application provides a fixed pressure-holding device, including: a base 40, a first fixed carrier 20, a second fixed carrier 30, and a pressure-holding mechanism 10.

[0030] Among them, such as Figure 3 As shown, the base 40 includes an adjacent first mounting position 41 and a second mounting position 42. A first abutment block 43 is fixed to one end of the first mounting position 41 along the first direction X. The second mounting position 42 is located on one side of the first mounting position 41 in the second direction Y. 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 11 As shown, the first fixing carrier 20 is used to fix the first workpiece 201 and the second workpiece 202. The first fixing carrier 20 includes a first fixing base 21 that is detachably fixed to the first mounting position 41. The bottom surface of the first fixing base 21 is provided with a clearance space 216, and the base 40 is provided with a first groove 44 at a position corresponding to the clearance space 216.

[0032] like Figure 1 and Figure 17 As shown, the second fixing carrier 30 is used to fix the third workpiece 301. The second fixing carrier 30 includes a second fixing seat 31 detachably fixed to the second mounting position 42. The upper surface of the second fixing seat 31 is provided with a first through hole 317 that exposes one side of the third workpiece 301. A second abutment block 37 is fixed to one end of the second fixing seat 31 along the first direction X.

[0033] like Figure 1 and Figure 4As shown, the pressure-holding mechanism 10 includes a third fixed seat 11 detachably fixed to the first abutment block 43 or the second abutment block 37. A pressure-holding rod 15 is slidably connected to the third fixed seat 11 in the vertical direction Z, and a first spring 14 is provided between the third fixed seat 11 and the pressure-holding rod 15. The pressure-holding rod 15 has a pressure-holding surface 151 at its end away from the third fixed seat 11 for contacting the third workpiece 301, and the pressure-holding surface 151 is horizontally upward. Figure 1 As shown, when the third fixing seat 11 is fixed to the first abutment block 43, it is in a standby position, and the pressure holding rod 15 is housed in the first groove 44 and the clearance space 216. Figure 2 As shown, when the third 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 317, and the pressure holding surface 151 abuts against the inner surface of the third workpiece 301.

[0034] The pressure-holding device provided in this embodiment is equipped with a base 40 having a first mounting position 41 and a second mounting position 42. A first abutting block 43 is fixed at the first mounting position 41, and a second abutting block 37 is provided at the second mounting position 42. At the same time, a first fixing carrier 20 (for fixing a first workpiece 201 and a second workpiece 202) and a second fixing carrier 30 (for fixing a third workpiece 301) are detachably installed at the two mounting positions respectively. The pressure-holding mechanism 10 is designed to be detachably installed on either the first abutting block 43 or the second abutting block 37. The pressure-holding mechanism 10 adopts a pure mechanical spring structure without any external power source (no cylinder, no motor, no air source). It only relies on the elastic force generated by the compression of the first spring 14 to provide the pressure holding force, thereby achieving a large pressure output in a small space.

[0035] The modular design of the pressure-holding mechanism 10, which can be shared by multiple workstations, is achieved through the detachable engagement between the pressure-holding mechanism 10 and the two abutment blocks. The two fixed carriers 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. During installation, the pressure-holding mechanism 10 achieves high-precision repeatability through the 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 third 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 horizontally upward and the pressure-holding direction perpendicular to the inner surface of the workpiece, thus ensuring the perpendicularity of the pressure-holding.

[0036] When the pressure holding mechanism 10 is installed on the first abutment block 43, it is in the standby position. The pressure holding rod 15 is stored in the clearance space 216 on the bottom surface of the first fixed seat 21 and the first groove 44 of the base 40, without occupying extra space and avoiding interference. When the pressure holding mechanism 10 is installed on the second abutment block 37, it is in the working position. The pressure holding rod 15 extends upward into the first through hole 317 of the second fixed seat 31, so that the horizontally upward-facing pressure holding surface 151 abuts against the inner surface of the third 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.

[0037] In this embodiment, a first slide rail 111 extending in the vertical direction Z is fixedly connected to the third fixed base 11. A slider 12 is slidably connected to the first slide rail 111, such as... Figure 6 As shown, the slider 12 has a first recess 121 extending vertically in the Z direction. The pressure-holding mechanism 10 also includes a connecting plate 13 fixedly connected to the third fixed base 11. The connecting plate 13 includes a first sealing block 131 located below the first recess 121 and a blocking block 133 located on the other side of the slider 12. The movement path of the slider 12 is restricted by the first sealing block 131 and the blocking block 133. The distance between the first sealing block 131 and the blocking block 133 is greater than the dimension of the slider 12 in the vertical Z direction. A first spring 14 is disposed in the first recess 121; one end of the first spring 14 abuts against the first sealing block 131, and the other end abuts against the bottom surface of the first recess 121. A pressure-holding rod 15 is fixedly connected to the side of the slider 12 facing away from the first slide rail 111.

[0038] The pressure-holding mechanism 10 achieves purely mechanical elastic pressure holding through a compact structure built into the first spring 14. When the pressure-holding surface 151 contacts the inner surface of the third workpiece 301, the third workpiece 301 pushes the slider 12 to compress the first spring 14, generating a stable pressure holding force. This not only adapts to the height tolerance of the third workpiece 301 through the elastic deformation of the first spring 14, avoiding damage to the third workpiece 301 from hard impacts, but also provides a continuous and reliable pressure holding force. Simultaneously, the first spring 14 is completely embedded in the first recess 121, unaffected by external dust and debris, resulting in good pressure holding stability, long service life, and a simple overall structure that requires no external power source, is low in cost, and occupies little space. Since the elastic force of the first spring 14 is proportional to its compression, the pressure holding force can be flexibly set by selecting first springs 14 with different stiffnesses or adjusting the pre-compression, achieving a large pressure holding output within a small space.

[0039] Preferably, the first slide rail 111 is located in the middle of the third fixed base 11 in the second direction Y, and the slider 12 is located on the side of the first slide rail 111 facing the base 40 in the first direction X, making the center of gravity of the entire pressure holding mechanism 10 more stable. The central arrangement of the first slide rail 111 ensures the uniformity of force on the slider 12 during the sliding process, avoiding jamming or wear caused by eccentric sliding, thereby ensuring that the movement direction of the pressure holding rod 15 is always perpendicular to the pressure holding surface 151 (i.e., pressure holding perpendicularity). The slider 12 is located on the side of the first slide rail 111 facing the base 40, so that the reaction force on the pressure holding rod 15 can be directly transmitted along the sliding direction of the slider 12 and the first slide rail 111, reducing the generation of torque, and further improving the consistency of the pressure holding direction and long-term reliability.

[0040] In this embodiment, such as Figure 7 As shown, the first sealing block 131 has a second recess 132 extending vertically in the Z direction, and the depth of the second recess 132 is less than the depth of the first recess 121. Figure 8 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 sealing 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 pressure holding; at the same time, since the second recess 132 is shallow, it will not significantly weaken the structural strength of the first sealing block 131, ensuring the limiting effect while taking into account the overall reliability.

[0041] Specifically, a positioning rod 16 is fixedly connected to the connecting plate 13, and the positioning rod 16 extends along the first direction X. For example... Figure 8 As shown, the connecting plate 13 is fixedly provided with mounting holes 134 for fixing and installing the positioning rod 16. This positioning rod 16 provides a precise positioning reference for the entire pressure-holding mechanism 10 when it is installed onto the first abutment block 43 or the second abutment block 37. By engaging the positioning rod 16 with the positioning holes on the first abutment block 43 or the second abutment block 37, the relative position between the pressure-holding mechanism 10 and the third workpiece 301 can be ensured to be accurate, avoiding misalignment between the pressure-holding surface 151 and the third workpiece 301 due to installation deviations, thus improving pressure-holding accuracy and product consistency. Figure 8 As shown, the slider 12 can be further slidably connected to the first slide rail 111 via the connecting block 19.

[0042] Furthermore, there are two positioning rods 16, which are spaced apart on both sides of the slider 12 in the second direction Y, forming a double-sided positioning layout. This symmetrical arrangement allows the pressure holding mechanism 10 to obtain positioning constraints from two different directions simultaneously during installation. Compared with the single-sided positioning scheme, the double-sided positioning can effectively limit the rotational degrees of 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 force, and ensuring that the pressure holding surface 151 always contacts the third workpiece 301 in the correct posture, thereby improving the stability and consistency of pressure holding.

[0043] In this embodiment, a positioning block 17 is slidably connected to the third fixed base 11, and a second spring 18 extending along the second direction Y is provided between the positioning block 17 and the third fixed base 11. The positioning block 17 includes a first positioning surface 171 for contacting the first abutting block 43 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 43 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 43 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 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 9 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.

[0045] 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 43 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 assembly and disassembly".

[0046] like Figure 5 As shown, the third 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.

[0047] Specifically, the third fixed base 11 is provided with an abutment post 113 extending along the first direction X. The abutment post 113 has a first abutment surface 114 for contacting the first abutment block 43 or the second abutment block 37. The first abutment surface 114 is perpendicular to the first direction X. The abutment post 113 provides a force fulcrum in the first direction X for the pressure holding mechanism 10. When the pressure holding rod 15 is subjected to the reaction force (along the vertical direction Z) of the third workpiece 301, the reaction force will generate a component force or torque along the first direction X through the third fixed base 11. The abutment post 113 abuts against the first abutment block 43 or the second abutment block 37 through its first abutment surface 114, which can effectively bear this component force, prevent the pressure holding mechanism 10 from being pushed backward or shaking, and ensure the stable output of the pressure holding pressure.

[0048] Furthermore, there are four abutment posts 113, with two abutment posts 113 spaced apart in the vertical Z direction, and the positioning block 17 located between the two vertically arranged abutment posts 113, forming a symmetrical layout of "abutment on both sides and positioning in the middle". This design allows the four abutment posts 113 to evenly distribute the force when the pressure holding mechanism 10 is subjected to the reaction force from the pressure holding rod 15, avoiding stress concentration or local deformation caused by single-point force; 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, and 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 26 and Figure 27 As shown, the positioning block 17 is specifically disposed within the third accommodating space 115 formed between the third fixed base 11 and the connecting plate 13, which provides a moving path for the positioning block 17. One end of the connecting plate 13 in the second direction Y and the side of the third fixed base 11 with the third recess 112 together restrict the moving path of the positioning block 17 in the second direction Y, as described below.

[0050] Specifically, such as Figure 25 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 third 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 115 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 115 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 115 in the second direction Y, and larger than the distance between one end of the connecting plate 13 in the second direction Y and the side of the third fixing seat 11 with the third recess 112. Thus, the operating part 173 can drive the positioning block 17 to move along the second direction Y within the third receiving space 115.

[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 second spring 18. The fourth recess 1731 corresponds to the third recess 112 one-to-one, with one end of the second spring 18 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 4The positioning part 174 is located between one end of the connecting plate 13 in the second direction Y and the side of the third fixing seat 11 where the third recess 112 is provided, and the size of the positioning part 174 in the second direction Y is smaller than the distance between one end of the connecting plate 13 in the second direction Y and the side of the third fixing seat 11 where the third recess 112 is provided. The first positioning surface 171 and the clearance surface 172 are located at the end of the positioning part 174 in the first direction X away from the operating part 173.

[0053] 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 third fixed seat 11, and setting an abutment post 113 with a first abutment surface 114 perpendicular to the first direction X, a complete precision positioning and locking mechanism is formed. When the pressure holding mechanism 10 is installed on the first abutment block 43 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 3 As shown, the first abutment block 43 is provided with multiple second abutment surfaces 431, two first positioning holes 432, and two second positioning surfaces 433. The two first positioning holes 432 are used to accommodate two positioning rods 16 respectively. The second abutment surfaces 431 are used to abut against the first abutment surfaces 114 and are located above and below the first positioning holes 432. The second positioning surfaces 433 are used to fit against the first positioning surfaces 171. The second positioning surfaces 433 are inclined planes, parallel to the vertical direction Z, and intersect with both the first direction X and the second direction Y, thus forming a high-precision docking interface that is perfectly matched with the positioning system of the pressure holding mechanism 10. Two first positioning holes 432 engage with two positioning rods 16, restricting the rotational freedom of the pressure-holding mechanism 10 in the horizontal plane. Second abutment surfaces 431 are distributed above and below the first positioning holes 432, abutting simultaneously from both directions, ensuring balanced force. An inclined second positioning surface 433 fits against an inclined first positioning surface 171, utilizing the guiding effect of the inclined surface to achieve automatic centering and alignment during installation. Even minor initial deviations are automatically corrected during the inclined surface fitting process. This interface design allows the pressure-holding mechanism 10 to be quickly and accurately installed onto the first abutment block 43 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 43 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 43 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] Specifically, the pressure-holding rod 15 includes a horizontal section extending along the first direction X, and an inclined section connecting the horizontal section and the pressure-holding surface 151. The height of the horizontal section is higher than that of the pressure-holding surface 151. This structural design allows the pressure-holding rod 15 to smoothly enter the interior of the third workpiece 301 from above (the upper surface of the third workpiece 301 has a through hole for the pressure-holding rod 15 to extend into), and then the pressure-holding surface 151 presses down on the inner surface of the third workpiece 301 that needs to be pressure-held.

[0057] 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 positioned above the third workpiece 301 at a predetermined position. Then, the pressure-holding mechanism 10 is moved downwards, so that the pressure-holding rod 15 enters the interior of the third workpiece 301 from above, and the two positioning rods 16 are aligned with the two first positioning holes 432, and the first abutment surface 114 is aligned with the second abutment surface 431. Next, a force is applied inward along the second direction Y to the operating part 173 of the positioning block 17, and Push the pressure holding mechanism 10 along the first direction X so that the pressure holding surface 151 is directly below the inner surface of the third workpiece 301 that needs to be pressure held, and the two positioning rods 16 are inserted into the two first positioning holes 432. The first abutting surface 114 abuts against the second abutting surface 431. Release the operating part 173 of the positioning block 17. Under the action of the second spring 18, the first positioning surface 171 fits against the third positioning surface 373. Under the action of the first spring 14, the pressure holding surface 151 presses upward to hold the inner surface of the third workpiece 301 that needs to be pressure held.

[0058] Please see Figures 10 to 15 The first fixed base 21 is provided with a second groove 221 and a second slide rail 211. For example... Figure 11 As shown, the second groove 221 extends along the first direction X and is used to place the first workpiece 201. The second slide rail 211 extends along the second direction Y and is located on the side of the second groove 221 away from the second fixed carrier 30 in the second direction Y. The first fixed carrier 20 also includes a first push block 23, a connecting seat 24, a bearing block 25, and a second push block 26.

[0059] like Figure 10 As shown, the first push block 23 is slidably connected to the second slide rail 211 and is used to fix the first workpiece 201 in the second direction Y. The connecting seat 24 is connected to the first fixed seat 21. The connecting seat 24 is provided with a third slide rail 241 and a fourth slide rail 242 extending along the second direction Y, and the third slide rail 241 and the fourth slide rail 242 are spaced apart in the first direction X. The bearing block 25 is slidably connected to the third slide rail 241. The bearing block 25 is provided with a bearing portion 251, which includes a bearing surface 252 and a first protrusion 253 and a second protrusion 254 arranged adjacent to each other on the bearing surface 252. The second push block 26 is slidably connected to the fourth slide rail 242. The second push block 26 is arranged opposite to the second protrusion 254. The first protrusion 253, the second protrusion 254, and the second push block 26 are used to fix the second workpiece 202 on the bearing surface 252. When the first push block 23, the bearing block 25, and the second push block 26 are all in the working position, the bearing part 251 is located above the second groove 221, and there is a gap between the lower surface of the bearing part 251 and the upper surface of the first workpiece 201.

[0060] The first fixing carrier 20 has a second groove 221 extending in the first direction X on a first fixing base 21 to place the first workpiece 201, and a second slide rail 211 extending in the second direction Y and a first push block 23 on one side of the second groove 221 to fix the first workpiece 201 in the second direction Y. At the same time, a third slide rail 241 and a fourth slide rail 242 extending in the second direction Y and spaced apart in the first direction X are provided by a connecting seat 24 connected to the first fixing base 21, so that the bearing block 25 and the second push block 26 can slide independently. The bearing part 251 on the bearing block 25 has a bearing surface 252 and adjacent first protrusions 253 and second protrusions 254, which are arranged opposite to the second push block 26 to jointly fix the second workpiece 202. When the first push block 23, the bearing block 25 and the second push block 26 are all in the working position, the bearing part The support part 251 is located above the second groove 221, and a gap is maintained between the lower surface of the support part 251 and the upper surface of the first workpiece 201. Thus, with a double-layer independent fixing structure of "the lower layer fixing the first workpiece 201, the upper layer fixing the second workpiece 202, and a gap between the upper and lower layers", the technical effect of simultaneously fixing two different types of workpieces on the same carrier without interference is achieved. This avoids damaging the first workpiece 201 when fixing the second workpiece 202, and allows the two to be positioned independently to adapt to products of different sizes and specifications. At the same time, it reduces the accumulation of positioning errors and damage risks caused by the transfer of workpieces between different carriers. It can achieve independent and stable fixing of two different types of components in a limited space and ensure the relative positional accuracy between the two, so that the two can be removed separately for other operations in the future. This significantly improves assembly accuracy, production efficiency and product yield.

[0061] Preferably, the first workpiece 201 is elongated, and the second workpiece 202 is approximately square and smaller in size.

[0062] like Figure 13As shown, the first fixed base 21 is provided with multiple first magnetic elements 217 and two third positioning holes 215 spaced apart in the first direction X. The first magnetic elements 217 are located at the bottom of the first fixed base 21, and the third positioning holes 215 penetrate the first fixed base 21. The second slide rail 211, the third slide rail 241, and the fourth slide rail 242 are located between the two third positioning holes 215. The first mounting position 41 includes multiple second magnetic elements 411 and two first positioning pins 412 spaced apart in the first direction X. The third positioning holes 215 cooperate with the first positioning pins 412, and the second magnetic elements 411 and the first magnetic elements 217 are magnetically attracted to each other. The two third positioning holes 215 are spaced apart, which can effectively limit the rotational freedom of the first fixed carrier 20 in the horizontal plane, ensuring that the first fixed carrier 20 is placed in the same position each time. Arranging each slide rail between the two third positioning holes 215 makes the weight of the moving parts on the slide rail evenly distributed between the two positioning points, ensuring the force balance of the carrier after positioning and fixing, and improving the positioning accuracy and stability.

[0063] Precise positioning (micrometer level) is achieved by utilizing the cooperation between the third positioning hole 215 and the first positioning pin 412, while rapid fixation is achieved by utilizing the magnetic attraction between the magnetic components. This allows for tool-free installation and removal between the first fixed carrier 20 and the base 40; simply placing the first fixed seat 21 in place will automatically cause it to engage and lock. Removal only requires overcoming the magnetic attraction and lifting upwards. This "magnetic attraction + positioning pin" rapid installation structure significantly reduces changeover time (from minutes to seconds), making it particularly suitable for production lines that require frequent carrier changes. Simultaneously, the first positioning pin 412 ensures consistent positioning each time, avoiding positioning errors caused by manual placement deviations.

[0064] In this embodiment, such as Figure 10 and Figure 12 As shown, a fifth magnetic element 213 is fixedly mounted on the side of the first fixed base 21 away from the second groove 221 in the second direction Y, and a sixth magnetic element 231 is fixedly mounted on the first push block 23. The fifth magnetic element 213 and the sixth magnetic element 231 are arranged opposite each other in the second direction Y. A fourth spring 214 is provided between the first fixed base 21 and the first push block 23. In the initial state, the fifth magnetic element 213 and the sixth magnetic element 231 are magnetically attracted to each other, the first push block 23 is away from the second groove 221, and the fourth spring 214 is compressed. When the first push block 23 is in the working position, the fifth magnetic element 213 and the sixth magnetic element 231 separate, and the fourth spring 214 applies a force to the first push block 23 along the second direction Y towards the first workpiece 201.

[0065] By setting the fifth magnetic component 213 and the sixth magnetic component 231 to magnetically attract each other, and setting the fourth spring 214 between the first fixed base 21 and the first push block 23, in the initial state, the fifth magnetic component 213 and the sixth magnetic component 231 magnetically attract the first push block 23 away from the second groove 221 and the fourth spring 214 is compressed. When it is necessary to fix the first workpiece 201, the first push block 23 can be pushed against the magnetic attraction force and moved to the working position in the direction of the second groove 221 by an external mechanism (such as a transfer robot or cylinder) or manually. At this time, the fifth magnetic component 213 and the sixth magnetic component 231 separate, the compressed fourth spring 214 releases its elastic force, and applies a continuous pushing force to the first push block 23 to clamp the first workpiece 201. This combination of "magnetic holding + spring force" design allows the first push block 23 to be stably held in a standby position away from the second groove 221 in the initial state, which facilitates the insertion and removal of the first workpiece 201. In the working state, it can provide a stable and reliable clamping force without the need for continuous power supply from an external power source. It has a simple structure, low cost, and rapid response.

[0066] Specifically, the first fixed carrier 20 for the first workpiece 201 also includes a first support plate 22, on which a second groove 221 is provided. The first support plate 22 is detachably fixed to the first fixed seat 21. This modular design allows for the replacement of only the corresponding first support plate 22 when different sizes or shapes of the first workpiece 201 need to be processed, without replacing the entire first fixed seat 21 or redesigning the carrier, greatly improving the versatility and changeover efficiency of the carrier. Furthermore, as a wear-prone part, the first support plate 22 can be replaced individually after long-term use, reducing maintenance costs.

[0067] Furthermore, a seventh magnetic element 243 is fixedly provided on the side of the connecting seat 24 away from the second groove 221 in the second direction Y, and an eighth magnetic element 261 is fixedly provided on the second push block 26. The seventh magnetic element 243 and the eighth magnetic element 261 are arranged opposite to each other in the second direction Y. A fifth spring 244 is provided between the connecting seat 24 and the second push block 26. In the initial state, the seventh magnetic element 243 and the eighth magnetic element 261 are magnetically attracted to each other, the second push block 26 is away from the second groove 221, and the fifth spring 244 is compressed. When the second push block 26 is in the working position, the seventh magnetic element 243 and the eighth magnetic element 261 are separated, and the fifth spring 244 applies a force to the second push block 26 along the second direction Y towards the second workpiece 202.

[0068] By setting a seventh magnetic element 243 on the connecting seat 24, an eighth magnetic element 261 on the second push block 26, and a fifth spring 244 between them, the second push block 26 achieves a "magnetic attraction retention + spring force" driving mode. In the initial state, the seventh magnetic element 243 and the eighth magnetic element 261 are magnetically attracted to each other, keeping the second push block 26 in a standby position away from the second groove 221, facilitating the insertion of the second workpiece 202. During operation, an external mechanism or manual pushing push block 26 overcomes the magnetic attraction and moves towards the second workpiece 202. After separation, the fifth spring 244 releases its elastic force to apply a continuous clamping force to push block 26. This design eliminates the need for a separate cylinder or motor for the second push block 26, simplifying the carrier structure, reducing manufacturing costs, and ensuring the stability and consistency of the clamping force.

[0069] Accordingly, a ninth magnetic element 245 is fixedly provided on the side of the connecting seat 24 away from the second groove 221 in the second direction Y, and a tenth magnetic element 255 is fixedly provided on the support block 25. The ninth magnetic element 245 and the tenth magnetic element 255 are arranged opposite to each other in the second direction Y. A sixth spring 246 is provided between the connecting seat 24 and the support block 25. In the initial state, the ninth magnetic element 245 and the tenth magnetic element 255 are magnetically attracted to each other, the support block 25 is away from the second groove 221, and the sixth spring 246 is compressed. When the support block 25 is in the working position, the ninth magnetic element 245 and the tenth magnetic element 255 are separated, and the sixth spring 246 applies a force to the support block 25 along the second direction Y towards the second groove 221.

[0070] By setting a ninth magnetic element 245 on the connecting seat 24, a tenth magnetic element 255 on the carrier block 25, and a sixth spring 246 between them, a "magnetic attraction + spring force" driving mode for the carrier block 25 is achieved. In the initial state, the ninth magnetic element 245 and the tenth magnetic element 255 are magnetically attracted to each other, keeping the carrier block 25 in a standby position away from the second groove 221, facilitating the placement and removal of the first workpiece 201 and the second workpiece 202. During operation, an external mechanism or manual pushing pushes the carrier block 25 to overcome the magnetic attraction and move it above the second groove 221. After separation, the sixth spring 246 releases its elastic force to apply a continuous pushing force to the carrier block 25, keeping it in the working position above the second groove 221. This design ensures the positional stability of the carrier block 25 in the working state, while the initial magnetic attraction function makes the carrier compact in the non-working state, facilitating conveying and stacking on automated production lines.

[0071] In this embodiment, the support block 25 is provided with a fourth groove 256, and the second push block 26 is provided with a push arm 262 located within the fourth groove 256. The push arm 262 can move along the second direction Y within the fourth groove 256. The push arm 262 includes a push surface 263 disposed opposite to the second protrusion 254, making the relative movement between the second push block 26 and the support block 25 more precise and stable. The fourth groove 256 plays a guiding and limiting role for the push arm 262, preventing the push arm 262 from deviating during movement. At the same time, the push arm 262 is located within the fourth groove 256, making the overall structure more compact and saving space. The push surface 263 is disposed opposite to the second protrusion 254, ensuring that the clamping force on the second workpiece 202 is accurate in direction and uniform in force distribution.

[0072] like Figure 13 and Figure 15 As shown, the bottom of the first fixed base 21 is provided with a fifth slide rail 212 extending along the first direction X. The connecting base 24 is slidably connected to the fifth slide rail 212, so that the connecting base 24 and its supporting block 25 and second push block 26 can move as a whole relative to the first fixed base 21 along the first direction X, thereby adjusting the relative position of the supporting part 251 and the second workpiece 202 in the first direction X. When the size of the first workpiece 201 or the second workpiece 202 changes, the connecting base 24 can be slidably adapted to workpieces of different lengths, or fine-tuned when the second workpiece 202 needs to be precisely positioned in the first direction X, greatly improving the adjustment flexibility and applicability of the carrier.

[0073] like Figure 14 and Figure 15 As shown, the second slide rail 211, the third slide rail 241, and the fourth slide rail 242 are arranged sequentially at intervals in the first direction X. The fifth slide rail 212 is located on the side of the second slide rail 211 opposite to the third slide rail 241, forming a clear functional division. The second slide rail 211 is used for the first push block 23 (fixing the first workpiece 201), the third slide rail 241 and the fourth slide rail 242 are used for the support block 25 and the second push block 26 (fixing the second workpiece 202), and the fifth slide rail 212 is used for the overall position adjustment of the connecting seat 24. Each slide rail is independent of the others and does not interfere with each other. The spatial distribution is reasonable, avoiding interference between moving parts. At the same time, it makes the overall structure compact and the force balanced, which is convenient for the loading, unloading and operation of automated equipment.

[0074] Furthermore, the second slide rail 211, the third slide rail 241, and the fourth slide rail 242 are located on the same side of the two third positioning holes 215 in the second direction Y, and the second groove 221 is located on the other side of the third positioning hole 215. This rational layout ensures that the first fixed carrier 20 is not disturbed by the workpiece picking and placing action during installation, and the reaction force generated by the workpiece during the fixing process will not affect the fitting accuracy of the third positioning hole 215, thus ensuring the long-term stability of the first fixed carrier 20.

[0075] In this embodiment, please refer to Figures 16 to 24 The second fixing base 31 has a first receiving space 313 and second receiving spaces 314 located on both sides of the first receiving space 313. The first receiving space 313 has a third groove 3151 for placing the third workpiece 301. The second fixing base 31 also has a second through hole 316 connecting the first receiving space 313 and the second receiving space 314. The second fixing base 31 has a plurality of third magnetic elements 318 and two fourth positioning holes 319 spaced apart in the second direction Y, the fourth positioning holes 319 penetrating the first fixing base 21. Figure 3 As shown, the second mounting position 42 includes multiple fourth magnetic elements 421 and two second positioning pins 422 arranged at intervals in the second direction Y. The fourth positioning hole 319 cooperates with the second positioning pins 422, and the fourth magnetic elements 421 and the third magnetic elements 318 are magnetically attracted to each other, so that the second fixing carrier 30 itself can also be quickly assembled and disassembled without tools.

[0076] Specifically, the second fixing carrier 30 also includes a second sealing block 32, a limiting block 33, and an operating block 35. The second sealing block 32 is detachably installed in the first receiving space 313 for fixing the third workpiece 301 within the third groove 3151. The second sealing block 32 is provided with a limiting step 321. The limiting block 33 is slidably disposed in the second receiving space 314, having a locked position and an unlocked position. A third spring 34 is provided between the side of the limiting block 33 away from the second through hole 316 and the second fixing seat 31. Figure 19 and Figure 20 As shown, when the limiting block 33 is in the locked position, the third spring 34 pushes the limiting block 33 through the second through hole 316 to engage with the limiting step 321, thereby fixing the second sealing block 32 to the second fixing seat 31. When the limiting block 33 is in the unlocked position, the third spring 34 is compressed, the limiting block 33 separates from the limiting step 321, and the second 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.

[0077] The second fixing carrier 30 has a first receiving space 313 and second receiving spaces 314 located on both sides of the second fixing base 31. The first receiving space 313 has a third groove 3151 for placing the third workpiece 301. The second sealing block 32 is detachably installed in the first receiving space 313 and cooperates with the second fixing base 31 to fix the third workpiece 301 in the third groove 3151. At the same time, the limiting block 33 is slidably disposed in the second receiving space 314. The third spring 34 pushes the limiting block 33 through the second through hole 316 to cooperate with the limiting step 321 to achieve automatic locking between the second sealing block 32 and the second fixing base 31. When disassembly is required, the operating block 35 fixedly connected to the limiting block 33 is operated to drive the limiting block 32. The third spring 34 can be compressed to achieve quick unlocking. Thus, the compact structure of "side sliding locking + compression of the third spring 34 unlocking" enables the quick disassembly and assembly of the second sealing block 32 and the convenient fixation of the third workpiece 301. At the same time, the multiple third magnetic parts 318 and at least two fourth positioning holes 319 provided on the second fixing seat 31 enable quick positioning and magnetic installation between the second fixing carrier 30 and the base 40. The entire process can be completed without any tools, including loading and unloading the second fixing carrier 30, assembling and disassembling the second sealing block 32, and picking up and placing the third workpiece 301. The operation is simple and significantly improves the efficiency and convenience of production line changeover. Moreover, the side locking structure does not occupy the upper or lower space, has a small footprint, and is easy to connect with other automated equipment.

[0078] In this embodiment, such as Figure 17 and Figure 18 As shown, the second fixed base 31 includes an operating surface 311 and a connecting surface 312 that are opposite to each other. The first accommodating space 313, the second accommodating space 314, and the third magnetic element 318 are all disposed on the connecting surface 312. The fourth positioning hole 319 passes through the operating surface 311 and the connecting surface 312, so that the connecting surface 312 of the second fixed carrier 30 concentrates all the functional structures related to the installation of the base 40 (mainly including the fourth positioning hole 319 and the third magnetic element 318), which facilitates quick docking with the base 40; while the operating surface 311 is used for manual or automated operation.

[0079] like Figure 21 and Figure 22 As shown, the second receiving space 314 includes a receiving hole 3141 that passes through the operating surface 311 and the connecting surface 312. At least a portion of the operating block 35 is located within the receiving hole 3141 and on the operating surface 311, so that the operator or automated actuator can 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.

[0080] Specifically, the operating surface 311 is also provided with a first through hole 317, which extends between the operating surface 311 and the first receiving space 313, exposing one side of the third workpiece 301. This allows subsequent operations, such as dispensing, inspection, pressure holding, coding, or optical recognition, to be performed on the exposed surface of the third workpiece 301 after it has been fixed inside the second fixed carrier 30, without having to remove the third workpiece 301 from the second fixed carrier 30. This avoids the accumulation of positioning errors and efficiency losses caused by repeatedly picking up and putting down the third workpiece 301, and also facilitates the visual positioning and processing of the third workpiece 301 by automated equipment from the operating surface 311. More importantly, the first through hole 317 provides movement space for the pressure holding rod 15. The upper surface of the third workpiece 301 is also provided with a through hole, allowing the pressure holding rod 15 to extend its pressure holding surface 151 into the first through hole 317 and the through hole of the third workpiece 301 to contact the part of the inner surface of the third workpiece 301 that needs maintenance.

[0081] like Figure 18 As shown, a baffle 36 is fixedly connected to the connecting surface 312 to shield the second accommodating space 314. This effectively prevents dust, debris, or foreign objects from entering the second accommodating space 314, avoiding jamming or wear of moving parts such as the limiting block 33 and the third spring 34 due to foreign object intrusion. This improves the reliability and service life of the second fixing carrier 30 during long-term use. Simultaneously, after the baffle 36 closes the second accommodating space 314, the connecting surface 312 of the second fixing carrier 30 becomes flatter, facilitating a close fit with the base 40 and avoiding problems such as weak adhesion or unstable positioning caused by an opening in the accommodating space.

[0082] In this embodiment, such as Figure 22 As shown, the third groove 3151 extends along the first direction X, and the two second receiving spaces 314 are located on both sides of the first 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 second sealing block 32 to be installed in the first receiving space 313, and the limiting blocks 33 on both sides can lock the second sealing block 32 symmetrically from both left and right directions at the same time, with balanced force, avoiding the problem of the second sealing block 32 being skewed or unevenly stressed due to unilateral locking. It is especially suitable for fixing the long strip-shaped second sealing block 32 and the long strip-shaped third workpiece 301, improving the fixing stability and reliability.

[0083] like Figure 23 and Figure 24As shown, the second 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 second 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 second receiving spaces 314, ensures that the second sealing block 32 is constrained by four evenly distributed locking points in the length direction (i.e., the first direction X). Compared to single-point or two-point locking, this design can more effectively prevent the second 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 second sealing blocks 32.

[0084] Specifically, each second 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 along the first direction X are fixedly connected to the two limiting blocks 33, 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.

[0085] Specifically, two second positioning holes 372 are spaced apart on both sides of the first receiving space 313 in the second direction Y. Two fourth positioning holes 319 are spaced apart on both sides of the first receiving space 313 in the second direction Y. The fourth positioning holes 319 are located on the side of the second 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 fourth positioning hole 319. Compared with single-end positioning, this two-end positioning method can more effectively restrict the rotational freedom of the second fixing carrier 30 in the horizontal plane, ensuring the consistency of the position of the second fixing carrier 30 when it is installed on the base 40 each time. At the same time, placing the fourth positioning hole 319 on the side of the second receiving space 314 away from the second abutment block 37 makes the force on the entire second fixing carrier 30 more balanced, avoiding the problem of installation instability caused by the excessive concentration of positioning points.

[0086] In this embodiment, the second fixing carrier 30, which is easy to assemble and disassemble, also includes a second support plate 315 disposed in the first receiving space 313, and the second support plate 315 is provided with a third groove 3151; the second support plate 315 is detachably fixedly connected to the second fixing seat 31. This modular design allows for the replacement of only the second support plate 315 with the corresponding groove when processing third workpieces 301 of different sizes or shapes, without the need to replace the entire second fixing seat 31 or redesign the second fixing carrier 30, greatly improving the versatility and changeover efficiency of the second fixing carrier 30. At the same time, the second support plate 315, as a wear-prone part that is in direct contact with the third workpiece 301, can be replaced separately after long-term use, reducing maintenance costs.

[0087] In addition, such as Figure 22 and Figure 23 As shown, a third positioning pin 3152 is also diagonally arranged on the second bearing plate 315, and a fifth positioning hole 322 is provided at the corresponding position on the second sealing block 32. Thus, the cooperation between the fifth positioning hole 322 and the third positioning pin 3152 allows the second sealing block 32 to be quickly installed onto the second fixed seat 31. Figure 24 As shown, the second sealing block 32 has a fifth groove 323 on the side opposite to the operating surface 311, which can cooperate with the third groove 3151 to accommodate the third workpiece 301.

[0088] 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.

[0089] 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.

[0090] 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.

[0091] 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.

[0092] 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.

[0093] 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 fixed pressure-holding device, characterized in that, include: The base includes an adjacent first mounting position and a second mounting position; a first abutting block is fixed to one end of the first mounting position along a first direction; the second mounting position is located on one side of the first mounting position in a second direction; the first direction, the second direction, and the vertical direction are mutually perpendicular. A first fixing carrier for fixing a first workpiece and a second workpiece includes a first fixing seat that is detachably fixed to the first mounting position; the bottom surface of the first fixing seat is provided with a clearance space, and the base is provided with a first groove at a position corresponding to the clearance space; The second fixing carrier for fixing the third workpiece includes a second fixing seat that is detachably fixed to the second mounting position; the upper surface of the second fixing seat is provided with a first through hole that exposes one side of the third workpiece; a second abutment block is fixed to one end of the second fixing seat along a first direction. A pressure-holding mechanism includes a third fixed seat detachably fixed to the first abutment block or the second abutment block; a pressure-holding rod is slidably connected to the third fixed seat in the vertical direction, and a first spring is provided between the third fixed seat and the pressure-holding rod; the pressure-holding rod has a pressure-holding surface for contacting a third workpiece at one end away from the third fixed seat, and the pressure-holding surface is horizontally upward; when the third fixed seat is fixed to the first abutment block, it is in a standby position, and the pressure-holding rod is housed in the first groove and clearance space; when the third fixed seat is fixed to the second abutment block, it is in a working position, the pressure-holding rod extends into the first through hole, and the pressure-holding surface abuts against the inner surface of the third workpiece; A first slide rail extending vertically is fixedly connected to the third fixed base; a slider is slidably connected to the first slide rail, and a first recess extending vertically is provided in the slider; the pressure-holding mechanism further includes a connecting plate fixedly connected to the third fixed base; the connecting plate includes a first sealing block located below the first recess and a blocking block located on the other side of the slider; the distance between the first sealing block and the blocking block is greater than the vertical dimension of the slider; a first spring is disposed in the first recess; one end of the first spring abuts against the first sealing block, and the other end abuts against the bottom surface of the first recess; a pressure-holding rod is fixedly connected to the side of the slider away from the first slide rail; the pressure-holding rod includes a horizontal section extending in a first direction and an inclined section connecting the horizontal section and the pressure-holding surface, the height of the horizontal section being higher than the pressure-holding surface.

2. The fixed pressure-holding device according to claim 1, characterized in that, The first slide rail is located at the middle position of the third fixed base in the second direction; the slider is located on the side of the first slide rail facing the base in the first direction.

3. The fixed pressure-holding device according to claim 1, characterized in that, 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 third 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 third 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 third 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.

4. The fixed pressure-holding device according to claim 3, characterized in that, The first positioning surface and the avoidance surface are located between the positioning rod and the slider; the positioning rod is cylindrical and the avoidance surface is curved; the first positioning surface is an inclined plane, parallel to the vertical direction, and intersects with both the first and second directions.

5. The fixed pressure-holding device according to claim 4, 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.

6. The fixed pressure-holding device according to claim 5, characterized in that, The second abutment block is provided with multiple third abutment surfaces, two second positioning holes, and two third positioning surfaces; the two second positioning holes are respectively used to accommodate two positioning rods, and the third abutment surfaces are used to abut against the first abutment surfaces and are located above and below the second positioning holes; the third positioning surfaces are used to fit against the first positioning surfaces, and the third positioning surfaces are inclined planes, parallel to the vertical direction, and intersect with both the first and second directions.

7. The fixed pressure-holding device according to claim 1, characterized in that, The first fixed base is provided with a second groove and a second slide rail; the second groove extends along a first direction and is used to place a first workpiece; the second slide rail extends along a second direction and is located on the side of the second groove away from the second fixed carrier in the second direction; the first fixed carrier further includes a first push block, a connecting seat, a bearing block, and a second push block; the first push block is slidably connected to the second slide rail and is used to fix the first workpiece in the second direction; the connecting seat is connected to the first fixed base; the connecting seat is provided with a third slide rail and a fourth slide rail extending along the second direction, and the third slide rail and the fourth slide rail are spaced apart in the first direction; the bearing block is slidably connected to the third slide rail; the bearing block is provided with a bearing portion, the bearing portion including a bearing surface and a first protrusion and a second protrusion arranged adjacent to each other on the bearing surface; the second push block is slidably connected to the fourth slide rail; the second push block is arranged opposite to the second protrusion; the first protrusion, the second protrusion, and the second push block are used to fix the second workpiece on the bearing surface; when the first push block, the bearing block, and the second push block are all in the working position, the bearing portion is located above the second groove, and there is a gap between the lower surface of the bearing portion and the upper surface of the first workpiece.

8. The fixed pressure-holding device according to claim 7, characterized in that, The first fixing base is provided with a plurality of first magnetic elements and two third positioning holes spaced apart in a first direction, the third positioning holes penetrating the first fixing base; the second slide rail, the third slide rail and the fourth slide rail are located between the two third positioning holes; the first mounting position includes a plurality of second magnetic elements and two first positioning pins spaced apart in a first direction; the third positioning holes cooperate with the first positioning pins, and the second magnetic elements and the first magnetic elements are magnetically attracted to each other.

9. The fixed pressure-holding device according to claim 1, characterized in that, The second fixing base has a first accommodating space and second accommodating spaces located on both sides of the first accommodating space; the first accommodating space has a third groove for placing a third workpiece; the second fixing base also has a second through hole connecting the first accommodating space and the second accommodating space; the second fixing base has a plurality of third magnetic elements and two fourth positioning holes spaced apart in a second direction, the fourth positioning holes penetrating the first fixing base; the second mounting position includes a plurality of fourth magnetic elements and two second positioning pins spaced apart in a second direction; the fourth positioning holes cooperate with the second positioning pins, and the fourth magnetic elements and the third magnetic elements are magnetically attracted to each other; The second fixing carrier further includes a second sealing block, a limiting block, and an operating block; the second sealing block is detachably installed in the first accommodating space for fixing the third workpiece in the third groove; the second sealing block is provided with a limiting step; the limiting block is slidably disposed in the second accommodating space, having a locked position and an unlocked position; a third spring is provided between the side of the limiting block away from the second through hole and the second fixing seat; when the limiting block is in the locked position, the third spring pushes the limiting block through the second through hole to cooperate with the limiting step, so that the second sealing block is fixed to the second fixing seat; when the limiting block is in the unlocked position, the third spring is compressed, the limiting block separates from the limiting step, and the second sealing block can be disassembled; the operating block is fixedly connected to the limiting block for driving the limiting block to move between the locked position and the unlocked position.

Images