Pressure maintaining jig and pressure maintaining device

Abstract

The application provides a pressure maintaining jig and a pressure maintaining device, relates to the technical field of pressure maintaining tooling, and is used for maintaining pressure of a first workpiece and a second workpiece in adhesive cooperation, wherein the pressure maintaining jig comprises a bottom die and a movable die, the bottom die is provided with a profiling die cavity for placing the first workpiece; the movable die is arranged opposite to the bottom die and is provided with a limiting space for placing the second workpiece, and the movable die can be close to or away from the bottom die; at least one of the bottom die and the movable die is provided with an adsorption structure for adsorbing and fixing the first workpiece or the second workpiece. The technical scheme of the application can improve positioning accuracy and assembly accuracy during product pressure maintaining.

Description

Technical Field

[0001] This invention relates to the field of pressure holding tooling technology, and particularly to a pressure holding fixture and a pressure holding device. Background Technology

[0002] For products like headphones, the housing structure typically includes a back shell and a front shell. During assembly, adhesive is applied and the shells are assembled. After assembly, the front and back shells are pressed together in a pressure-holding fixture until the adhesive cures, thus completing the pressure-holding process. However, due to the small size of products like headphones, positioning during assembly is inconvenient, which can easily lead to misalignment of the front and back shells, affecting assembly accuracy. Summary of the Invention

[0003] The main objective of this invention is to provide a pressure-holding fixture and a pressure-holding device, which aim to improve the positioning accuracy and assembly accuracy of products during pressure holding.

[0004] To achieve the above objectives, the present invention provides a pressure-holding fixture for maintaining pressure on a first workpiece and a second workpiece that are bonded together. The pressure-holding fixture comprises:

[0005] The bottom mold, wherein the bottom mold is provided with a contour cavity for placing the first workpiece; and

[0006] A moving mold is disposed opposite to the bottom mold and is provided with a limiting space for placing the second workpiece. The moving mold can move closer to or further away from the bottom mold.

[0007] At least one of the bottom mold and the moving mold is provided with an adsorption structure, which is used to adsorb and fix the first workpiece or the second workpiece.

[0008] In one embodiment, the pressure-holding fixture further includes a locking and releasing mechanism that locks the moving mold and the bottom mold when the moving mold and the bottom mold are closed.

[0009] In one embodiment, the locking and releasing mechanism includes at least one traction structure that extends along the arrangement direction of the bottom mold and the moving mold, and is elastically telescopic in the extension direction, so that the locking and releasing mechanism can apply an elastic force toward the bottom mold to the moving mold to lock the moving mold and the bottom mold.

[0010] In one embodiment, the locking and releasing mechanism further includes a base plate, the bottom mold is disposed on the base plate, one end of the traction structure is connected to the base plate, and the end of the traction structure away from the bottom mold is provided with a pressing part, which extends toward the moving mold side for pressing the moving mold.

[0011] In one embodiment, the traction structure includes:

[0012] A connector, one end of which is connected to the base plate, and the other end of which extends toward the moving mold side;

[0013] A column, extending along the arrangement direction of the bottom mold and the moving mold, and slidably connected to the connecting member; the end of the column away from the bottom mold is connected to the clamping part; and

[0014] An elastic element acts between the connector and the column to give the column a tendency to move toward the connector.

[0015] In one embodiment, the column and the connector are plugged into each other.

[0016] In one embodiment, the column is provided with a plug hole, a through hole and a movable hole arranged and connected in sequence along the extension direction of the column, the connector is inserted into the plug hole, and the diameter of the through hole is smaller than that of the movable hole;

[0017] The traction structure also includes a locking member, which passes through the through hole. One end of the locking member located in the insertion hole is connected to the connector. One end of the locking member located in the movable hole is provided with a stop portion. The elastic member is located between the bottom wall of the movable hole and the stop portion.

[0018] In one embodiment, the base plate has a connecting part on its side, one end of the connector is connected to the connecting part, one of the connecting part and the column has an insertion interface, and the other of the connecting part and the column has a plug-in part, and the plug-in part can enter and exit the insertion interface when the column slides relative to the connector.

[0019] In one embodiment, at least one surface of the connector is beveled, and the cross-section of the connector gradually decreases along the opening depth direction, and the shape of the plug portion is adapted to the connector.

[0020] In one embodiment, one end of the traction structure is rotatably connected to the base plate so that the traction structure can be flipped outward;

[0021] And / or, the surface of the moving mold facing away from the bottom mold is provided with an elastic pad, and the pressing part presses against at least the elastic pad;

[0022] And / or, the pressing part is provided with one of a snap-fit ​​part and a snap-fit ​​interface on the pressing surface of the moving mold, and the other of the snap-fit ​​part and the snap-fit ​​interface is provided on the surface of the moving mold opposite to the bottom mold, and the snap-fit ​​part is inserted into the snap-fit ​​interface when the pressing part is pressed onto the moving mold;

[0023] And / or, the pressure-holding fixture further includes a positioning post, the positioning post protruding from the base plate, the moving mold having a positioning hole, and the positioning post being inserted into the positioning hole.

[0024] In one embodiment, the moving mold includes a contour positioning mechanism and a pressure block positioning mechanism. The contour positioning mechanism is provided with the limiting space and is disposed opposite to the bottom mold. The pressure block positioning mechanism presses against the contour positioning mechanism, and the pressing part presses against the pressure block positioning mechanism.

[0025] In one embodiment, the contour positioning mechanism is provided with a clamping part, the pressure block positioning mechanism is formed with a clearance opening, and the clamping part passes through the clearance opening.

[0026] In one embodiment, both the bottom mold and the moving mold are provided with the adsorption structure;

[0027] And / or, the bottom mold is provided with the adsorption structure, the adsorption structure includes at least one vacuum suction cup exposed in the mold cavity, and the bottom mold has an air extraction channel communicating with the vacuum suction cup;

[0028] And / or, the moving mold is provided with the adsorption structure, the adsorption structure includes at least one vacuum suction cup exposed in the limiting space, and the moving mold has an air extraction channel communicating with the vacuum suction cup;

[0029] And / or, the moving mold has at least one limiting portion protruding from its surface facing the bottom mold, the limiting portion extending along at least a portion of the contour of the second workpiece to enclose and form the limiting space.

[0030] This application also proposes a pressure-holding device, which includes a pressure-holding fixture as described in any of the foregoing embodiments.

[0031] The technical solution of this invention involves using a pressure-holding fixture to hold pressure on a first and second workpiece that are bonded together, for example, after assembling an earphone's front and rear shells. The pressure-holding fixture has a bottom mold with a contoured cavity adapted to the shape of the first workpiece, and a moving mold with a limiting space adapted to the shape of the second workpiece. This allows for the limiting of the first and second workpieces during pressure holding. Simultaneously, an adsorption structure is provided on at least one of the moving mold and the bottom mold to further improve the positioning accuracy of the first and / or second workpieces, reduce the risk of misalignment during mold closing and pressure holding, ensure product positioning and assembly accuracy, and improve assembly results and pressure holding yield. Attached Figure Description

[0032] 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 the structures shown in these drawings without creative effort.

[0033] Figure 1 This is a structural diagram of an embodiment of the pressure-holding fixture of this application;

[0034] Figure 2 for Figure 1 Cross-sectional view of the pressure-holding fixture;

[0035] Figure 3 for Figure 1 Exploded view of the pressure jig;

[0036] Figure 4 for Figure 1 Diagram showing the central pressure fixture in a state where the locking and releasing mechanism is extended outwards;

[0037] Figure 5 for Figure 4 Structural diagram of the removal of the moving mold from the pressure fixture in the middle;

[0038] Figure 6 for Figure 1 Structural diagram of the removal of the moving mold from the pressure fixture in the middle;

[0039] Figure 7 for Figure 1 Structural diagram of an embodiment of the locking and releasing mechanism in a pressure-holding fixture;

[0040] Figure 8 for Figure 1 Structural diagram of an embodiment of the moving mold in a pressure-holding fixture;

[0041] Figure 9 for Figure 8 Structural diagram of an embodiment of the contour positioning mechanism in a moving mold;

[0042] Figure 10 for Figure 9 Another structural view of the contour positioning mechanism;

[0043] Figure 11 for Figure 9 A cross-sectional view of the contour positioning mechanism;

[0044] Figure 12 for Figure 8 Another structural view of the pressure block positioning mechanism in the moving mold.

[0045] Explanation of icon numbers:

[0046] 100. Pressure holding fixture; 1. Bottom mold; 11. Contouring mold cavity; 2. Moving mold; 21. Contouring positioning mechanism; 211. Main body; 212. Contouring head; 213. Limiting space; 214. Limiting part; 215. Clamping part; 216. Air extraction channel; 22. Pressure block positioning mechanism; 221. Elastic pad; 222. Positioning hole; 223. Bushing; 224. Snap-fit ​​interface; 225. Clearance opening; 3. Locking and releasing mechanism; 31 311. Traction structure; 312. Connector; 313. Column; 314. Insertion hole; 315. Through hole; 316. Movable hole; 317. Insertion interface; 318. Elastic element; 319. Locking element; 310. Stop part; 32. Base plate; 321. Connecting part; 322. Insertion part; 33. Pressing part; 34. Snap-fit ​​part; 35. Positioning post; 46. Adsorption structure; 47. Vacuum suction cup; 58. Buffer pad.

[0047] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0048] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0049] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0050] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0051] For products like headphones, the housing structure typically includes a back shell and a front shell. During assembly, adhesive is applied and the shells are assembled. After assembly, the front and back shells are pressed together in a pressure-holding fixture until the adhesive cures, thus completing the pressure-holding process. However, due to the small size of products like headphones, positioning during assembly is inconvenient, which can easily lead to misalignment of the front and back shells, affecting assembly accuracy.

[0052] To address the aforementioned issues, this application proposes a pressure-holding fixture 100 for holding pressure on a first workpiece and a second workpiece that are bonded together, which can improve product positioning and assembly accuracy.

[0053] Please refer to Figure 1 , Figure 3 as well as Figure 10 In some embodiments of this application, the pressure-holding fixture 100 includes:

[0054] Bottom mold 1, the bottom mold 1 having a contour cavity 11 for placing the first workpiece; and

[0055] The moving mold 2 is disposed opposite to the bottom mold 1 and is provided with a limiting space 213 for placing the second workpiece. The moving mold 2 can move closer to or further away from the bottom mold 1.

[0056] At least one of the bottom mold 1 and the moving mold 2 is provided with an adsorption structure 4, which is used to adsorb and fix the first workpiece or the second workpiece.

[0057] The pressure-holding fixture 100 proposed in this application can be used for pressure holding in products such as headphones, to ensure a tight connection between two bonded workpieces in the product, thereby improving the bonding strength between the two workpieces. The two workpieces requiring pressure holding are defined as a first workpiece and a second workpiece. The first and second workpieces can be the front and rear shells of a product's housing structure, such as the front and rear shells of headphones; the first workpiece can also be a touch module, display screen, or other structure, and the second workpiece can be a housing, etc.

[0058] The pressure-holding fixture 100 includes a bottom mold 1 and a moving mold 2 arranged opposite to each other. During pressure holding, the moving mold 2 is close to the bottom mold 1 to clamp the first workpiece and the second workpiece. When pressure holding is not required, the moving mold 2 can be moved away from the bottom mold 1. At this time, the moving mold 2 can not be arranged opposite to the bottom mold 1, and the moving mold 2 can be completely separated from the bottom mold 1.

[0059] The bottom mold 1 is provided with a contouring cavity 11 for placing the first workpiece. The shape of the contouring mold is adapted to the shape of the first workpiece, which can improve the positioning accuracy of the first workpiece on the bottom mold 1. The contouring cavity 11 can be a groove recessed on the surface of the bottom mold 1, or it can be formed by a positioning structure on the surface of the bottom mold 1. The moving mold 2 is provided with a limiting space 213 for placing the second workpiece. The limiting space 213 can be a groove recessed on the surface of the moving mold 2, or it can be formed by a limiting part 214 on the surface of the moving mold 2. The setting of the limiting space 213 can also improve the positioning accuracy of the second workpiece placed on the moving mold 2 and reduce the risk of the second workpiece being misaligned.

[0060] Furthermore, in this embodiment, an adsorption structure 4 can be provided within the contouring cavity 11 of the bottom mold 1. The adsorption structure 4 can be a pressure suction cup or a vacuum suction cup 41 used in conjunction with a vacuum pumping device. Additionally, depending on the material of the first workpiece, if the first workpiece can be attracted by a magnet, a magnetic suction cup or similar device can also be used. With this configuration, after the first workpiece is placed in the contouring cavity 11, the adsorption structure 4 can be used to adsorb the first workpiece, further improving the positional stability of the first workpiece placed in the bottom mold 1, reducing the risk of the first workpiece shifting, and improving the positioning accuracy of the first workpiece, thereby improving the assembly effect and pressure holding yield of the first and second workpieces.

[0061] In some embodiments, an adsorption structure 4 can be provided in the limiting space 213 of the moving mold 2. The adsorption structure 4 can be a pressure suction cup or a vacuum suction cup 41 used in conjunction with a vacuum pumping device. Additionally, depending on the material of the second workpiece, if the second workpiece can be attracted by a magnet, a magnetic suction cup or similar device can be used. With this configuration, after the second workpiece is placed in the limiting space 213, the adsorption structure 4 can be used to hold the second workpiece, further improving the positional stability of the second workpiece on the moving mold 2, reducing the risk of the second workpiece shifting, and improving the positioning accuracy of the second workpiece, thereby improving the assembly effect and pressure holding yield of the first and second workpieces. Furthermore, it is understood that when the moving mold 2 and the bottom mold 1 are arranged vertically, the adsorption structure 4 on the moving mold 2 can hold the second workpiece in place, preventing it from falling off the moving mold 2.

[0062] Of course, adsorption structures 4 can be provided in both the contouring mold cavity 11 and the limiting space 213 to improve the positioning accuracy of the first workpiece and the second workpiece, thereby improving the product assembly effect and pressure holding yield.

[0063] It should be noted that in the embodiments of this application, the pressure holding fixture 100 can be operated manually to complete the pressure holding operation, or it can be combined with a robot or other mechanical equipment to form a pressure holding device, so that the mechanical equipment controls the movement of the moving mold 2 and other components in the pressure holding fixture 100, thereby realizing the automation of the pressure holding and mold separation processes, improving the degree of automation of the assembly process, and helping to improve the assembly accuracy.

[0064] Therefore, it is understandable that the technical solution of this application uses a pressure-holding fixture 100 to hold pressure on the first and second workpieces that are bonded together, for example, to hold pressure on the front and back shells of an earphone after assembly. The pressure-holding fixture 100 has a contoured mold cavity 11 in the bottom mold 1 that matches the shape of the first workpiece, and a limiting space 213 in the moving mold 2 that matches the shape of the second workpiece. This allows for the limiting of the first and second workpieces respectively during pressure holding. Simultaneously, an adsorption structure 4 is provided on at least one of the moving mold 2 and the bottom mold 1 to further improve the positioning accuracy of the first and / or second workpieces, reduce the risk of misalignment during mold closing and pressure holding, ensure product positioning and assembly accuracy, and improve assembly effect and pressure holding yield.

[0065] Combined with reference Figure 3 as well as Figure 10 In one embodiment, both the bottom mold 1 and the moving mold 2 are provided with the adsorption structure 4; this arrangement can simultaneously improve the positioning accuracy of the first workpiece and the second workpiece, thereby improving the product assembly effect and the pressure holding yield.

[0066] Please refer to Figure 3 In one embodiment, the bottom mold 1 is provided with the adsorption structure 4, the adsorption structure 4 includes at least one vacuum suction cup 41 exposed in the contour mold cavity 11, and the bottom mold 1 has an air extraction channel 216 communicating with the vacuum suction cup 41.

[0067] In this embodiment, the adsorption structure 4 provided on the bottom mold 1 includes at least one vacuum suction cup 41. One end of the vacuum suction cup 41 is inserted into the bottom mold 1, and the adsorption end of the vacuum suction cup 41 is exposed in the contour mold cavity 11. An air extraction channel 216 is provided on the bottom mold 1 to communicate with the vacuum suction cup 41. When the pressure holding fixture 100 is used, a vacuum pumping device can be provided to communicate with the air extraction channel 216. Thus, when the first workpiece is placed in the contour mold cavity 11, the vacuum suction cup 41 adheres to the surface of the first workpiece. The vacuum pumping device extracts air to generate a negative pressure between the vacuum suction cup 41 and the first workpiece, thereby making the vacuum suction cup 41 hold the first workpiece tightly and ensuring the positioning accuracy of the first workpiece.

[0068] When at least two vacuum suction cups 41 are provided on the bottom mold 1, each vacuum suction cup 41 can be connected to an air extraction channel 216, or at least two vacuum suction cups 41 can be connected to the same air extraction channel 216, thereby reducing the number of air extraction channels 216, reducing the processing difficulty, and simplifying the connection structure between the vacuum extraction device and the bottom mold 1.

[0069] Combined with reference Figure 10 and Figure 11In one embodiment, the moving mold 2 is provided with the adsorption structure 4, the adsorption structure 4 includes at least one vacuum suction cup 41 exposed in the limiting space 213, and the moving mold 2 has an air extraction channel 216 communicating with the vacuum suction cup 41.

[0070] In this embodiment, the adsorption structure 4 provided on the moving mold 2 includes at least one vacuum suction cup 41. One end of the vacuum suction cup 41 is inserted into the moving mold 2, and the adsorption end of the vacuum suction cup 41 is exposed in the limiting space 213. An air extraction channel 216 is opened on the bottom mold 1 to communicate with the vacuum suction cup 41. When the pressure holding fixture 100 is used, a vacuum pumping device can be set to communicate with the air extraction channel 216. Thus, when the second workpiece is placed in the limiting space 213, the vacuum suction cup 41 adheres to the surface of the second workpiece. The vacuum pumping device extracts air to generate a negative pressure between the vacuum suction cup 41 and the second workpiece, thereby making the vacuum suction cup 41 tightly suction the second workpiece and ensuring the positioning accuracy of the second workpiece.

[0071] When the moving mold 2 is provided with at least two vacuum suction cups 41, each vacuum suction cup 41 can be connected to a vacuum channel 216, or at least two of the vacuum suction cups 41 can be connected to the same vacuum channel 216, thereby reducing the number of vacuum channels 216, reducing the processing difficulty, and simplifying the connection structure between the vacuum device and the moving mold 2.

[0072] Please refer to Figure 10 In one embodiment, the moving mold 2 has at least one limiting portion 214 protruding from its surface facing the bottom mold 1. The limiting portion 214 extends along at least a portion of the contour of the second workpiece to enclose and form the limiting space 213.

[0073] In this embodiment, a limiting portion 214 may be provided extending along at least a portion of the contour of the second workpiece to enclose and form a limiting space 213. The limiting portion 214 may be an open-loop structure or a closed-loop structure. In some embodiments, at least two limiting portions 214 may be provided at intervals along the contour of the second workpiece to enclose and form the limiting space 213. With this configuration, when the second workpiece is placed in the limiting space 213, the outer wall of the second workpiece is limited by the limiting portions 214, thereby preventing the second workpiece from opening outward due to the extrusion force of the pressure holding fixture 100 during mold closing and pressure holding, ensuring the pressure holding effect and assembly accuracy.

[0074] Please refer to Figures 1 to 3 In one embodiment, the pressure-holding fixture 100 further includes a locking and releasing mechanism 3, which locks the moving mold 2 and the bottom mold 1 when the moving mold 2 and the bottom mold 1 are closed.

[0075] In this embodiment, a locking and releasing mechanism 3 is provided in the pressure holding fixture 100. The locking and releasing mechanism 3 can be a buckle, a magnetic structure, or a traction structure 31 and a pressing structure as described in the following embodiments. The locking and releasing mechanism 3 can lock the moving mold 2 and the bottom mold 1 when they are closed to hold pressure on the product. This can prevent the bottom mold 1 and the moving mold 2 from being misaligned and separated before the pressure holding is completed, thus avoiding the impact on the pressure holding effect. It can also enable the pressure holding fixture 100 to apply a relatively stable pressure to the product during the pressure holding process, thereby ensuring the pressure holding effect.

[0076] Please refer to Figure 1 In one embodiment, the locking and releasing mechanism 3 includes at least one traction structure 31, which extends along the arrangement direction of the bottom mold 1 and the moving mold 2 and is elastically telescopic in the extension direction, so that the locking and releasing mechanism 3 can apply an elastic force toward the bottom mold 1 to the moving mold 2 to lock the moving mold 2 and the bottom mold 1.

[0077] In this embodiment, the locking and releasing mechanism 3 may be provided with only one traction structure 31, or two or more traction structures 31 may be provided to lock the bottom mold 1 and the moving mold 2. The traction structure 31 is elastic and can elastically extend and retract along the arrangement direction of the bottom mold 1 and the fixed mold. One end of the traction structure 31 may be connected to the bottom mold 1 or to the installation position of the bottom mold 1, for example, to the base plate 32 used to support the bottom mold 1. The other end of the traction structure 31 may be connected to the moving mold 2 or to the pressing structure, so that the pressing structure is located on the side of the moving mold 2 away from the bottom mold 1. In this embodiment, the traction structure 31 is in a stretched state. With this configuration, the traction structure 31 can apply an elastic force to the moving mold 2, so that the moving mold 2 has a tendency to move closer to the bottom mold 1 and maintain the mold-closed state with the bottom mold 1, so that the moving mold 2 and the bottom mold 1 are locked by the locking and releasing mechanism 3 when the mold is closed, and a stable holding pressure is maintained to hold the product.

[0078] In this embodiment, the holding pressure can be adjusted by regulating the elastic force of the traction structure 31, thereby making the holding pressure controllable. For example, the connection position at the end of the traction structure 31 can be adjusted to regulate the tensile length of the traction structure 31, thereby regulating the elastic force; or at least the elastic element 313 in the traction structure 31 can be replaced to regulate the elastic force. The traction structure 31 can be a tension spring, a gas spring, or a structure as described in the following embodiments, and is not limited here.

[0079] Combined with reference Figures 1 to 3 In one embodiment, the locking and releasing mechanism 3 further includes a base plate 32, the bottom mold 1 is disposed on the base plate 32, one end of the traction structure 31 is connected to the base plate 32, and the end of the traction structure 31 away from the bottom mold 1 is provided with a pressing part 33, the pressing part 33 extends toward the moving mold 2 and is used to press the moving mold 2.

[0080] In this embodiment, the locking and releasing mechanism 3 includes a traction structure 31, a base plate 32, and a pressing part 33. The base plate 32 and the pressing part 33 are respectively connected to the two ends of the traction structure 31. The base plate 32 is used to support the bottom mold 1, so that the bottom mold 1 and the locking and releasing mechanism 3 form an integral structure. The pressing part 33 is used to press the moving mold 2. Under the action of the traction structure 31, the pressing part 33 has a tendency to move towards the base plate 32 and the bottom mold 1, so that the moving mold 2 can be pressed when the moving mold 2 and the bottom mold 1 are closed, so that the moving mold 2 and the bottom mold 1 maintain a stable mold closing state, so as to apply a stable holding pressure to the product, and avoid the misalignment of the moving mold 2 and the fixed mold, which would cause the first workpiece and the second workpiece to be misaligned, thus ensuring the holding pressure effect and assembly accuracy.

[0081] Please refer to Figure 2 In one embodiment, the traction structure 31 includes:

[0082] Connector 311, one end of which is connected to the base plate 32, and the other end of which extends toward the moving mold 2;

[0083] A column 312 extends along the arrangement direction of the bottom mold 1 and the moving mold 2, and is slidably connected to the connecting member 311. One end of the column 312 away from the bottom mold 1 is connected to the pressing part 33.

[0084] An elastic element 313 acts between the connector 311 and the column 312 to give the column 312 a tendency to move toward the connector 311.

[0085] In this embodiment, the traction structure 31 includes a connector 311, a column 312, and an elastic element 313. The connector 311 is connected to the base plate 32, and the column 312 is connected to the pressing part 33. The column 312 and the connector 311 are slidably connected so that the column 312 can slide relative to the connector 311 in the arrangement direction of the bottom mold 1 and the moving mold 2. The column 312 and the connector 311 can be slidably connected by a guide rail structure, or the column 312 and the connector 311 can be inserted and slidably connected. With these settings, the sliding fit between the column 312 and the connector 311 can be used to guide the movement of the moving mold 2 towards the bottom mold 1, so that the moving mold 2 is accurately aligned and closed with the bottom mold 1, thereby improving the assembly accuracy of the first workpiece and the second workpiece and ensuring the pressure holding effect.

[0086] The elastic element 313 can be a tension spring with its two ends connected to the column 312 and the connector 311 respectively, or it can be configured as described in the following embodiment, which will not be elaborated here.

[0087] Combined with reference Figure 2 and Figure 4 In one embodiment, the column 312 and the connector 311 are inserted into each other. The column 312 can be inserted into the connector 311, or the connector 311 can be inserted into the column 312. This arrangement improves the connection strength between the column 312 and the connector 311, enhances the overall structural stability, and reduces the risk of separation or misalignment between the column 312 and the connector 311.

[0088] Please refer to Figure 2 In one embodiment, the column 312 is provided with a plug hole 3121, a through hole 3122, and a movable hole 3123 arranged and connected sequentially along the extension direction of the column 312. The connector 311 is inserted into the plug hole 3121, and the diameter of the through hole 3122 is smaller than that of the movable hole 3123. The traction structure 31 also includes a locking member 314, which passes through the through hole 3122. One end of the locking member 314 located in the plug hole 3121 is connected to the connector 311. One end of the locking member 314 located in the movable hole 3123 is provided with a stop portion 3141. The elastic member 313 is provided between the bottom wall of the movable hole 3123 and the stop portion 3141.

[0089] In this embodiment, one end of the connector 311 is inserted into the insertion hole 3121 of the column 312, and a through hole 3122 and a movable hole 3123 are sequentially opened at the end of the insertion hole 3121 away from the connector 311, and the through hole 3122 connects the insertion hole 3121 and the movable hole 3123; in addition, a locking member 314 is provided to connect with the connector 311. The locking member 314 passes through the through hole 3122, and a stop part 3141 is provided at the end of the locking member 314 located in the movable hole 3123. The maximum cross-sectional width of the stop part 3141 is greater than the maximum width of the through hole 3122, so that the stop part 3141 cannot pass through the through hole 3122. This setting can prevent the connector 311 from detaching from the column 312. Furthermore, the elastic element 313 is disposed within the movable hole 3123, and is sandwiched between the bottom wall of the movable hole 3123 and the stop portion 3141 of the locking element 314. With this arrangement, when the traction structure 31 is in a stretched state, the elastic element 313 is in a contracted state. At this time, the elastic element 313 applies an elastic force to the bottom wall of the movable hole 3123, that is, it applies an elastic force to the column 312, causing the column 312 to tend to move towards the connecting member 311, thereby driving the pressing part 33 to press the moving mold 2. This arrangement allows the elastic element 313 to be housed and hidden inside the column 312, preventing damage to the elastic element 313, resulting in a relatively neat appearance for the traction structure 31, and making the overall structure of the traction structure 31 more stable.

[0090] In some embodiments, the elastic element 313 can be a spring, which can be sleeved on the outside of the locking element 314 to prevent the spring from bending and improve structural and performance stability. Alternatively, the locking element 314 can be a bolt, with a threaded connection between the bolt and the connecting element 311; alternatively, the locking element 314 may not have threads and can be interference-fitted with the connecting element 311, or a set screw hole can be provided on the side wall of the connecting element 311 for installing a set screw, so that the set screw tightens the locking element 314 to connect the locking element 314 to the connecting element 311.

[0091] Combined with reference Figure 1 and Figure 7 In one embodiment, the base plate 32 is provided with a connecting part 321 on its side, one end of the connector 311 is connected to the connecting part 321, one of the connecting part 321 and the column 312 is provided with an insertion interface 3124, and the other of the connecting part 321 and the column 312 is provided with a plug-in part 322. When the column 312 slides relative to the connector 311, the plug-in part 322 can enter and exit the insertion interface 3124.

[0092] In this embodiment, a connecting portion 321 is provided on the side of the base plate 32, and the connector 311 is connected to the connecting portion 321. A plug-in portion 322 can be provided on the side of the connecting portion 321 facing the column 312, and a corresponding plug-in interface 3124 can be provided at the end of the column 312 facing the connecting portion 321. Alternatively, a plug-in interface 3124 can be provided on the side of the connecting portion 321 facing the column 312, thus forming a plug-in portion 322 at the end of the column 312 facing the connecting portion 321. When the column 312 slides towards the connecting portion 321 under the action of the elastic member 313, the plug-in portion 322 is inserted into the plug-in interface 3124. With this configuration, when the column 312 drives the pressing part 33 to press the moving mold 2 and close the moving mold 2 with the bottom mold 1, the column 312 and the connecting part 321 are inserted and matched, which can limit the position of the column 312 and the traction structure 31, and prevent the traction structure 31 from being affected by external forces in the mold closing state, thus affecting the stability of the mold closing process.

[0093] In some embodiments, the traction structure 31 is rotatably connected to the connecting part 321 so that the traction structure 31 can open outward to facilitate the entry and exit of the moving mold 2. At this time, the column 312 and the connecting part 321 are engaged through the insertion part 322 and the insertion interface 3124, which can limit the traction structure 31 and prevent the traction structure 31 from rotating outward in the mold-closing state of the pressure-holding fixture 100, thereby improving the stability of the mold-closing state. In this state, when it is necessary to separate the moving mold 2 from the bottom mold 1, the column 312 can be pulled up first to disengage the insertion part 322 from the insertion interface 3124. Then, the traction structure 31 can rotate outward relative to the connecting part 321 to avoid the moving mold 2, so that the moving mold 2 can be removed without interfering with the locking and releasing mechanism 3.

[0094] Please refer to Figure 7 In one embodiment, at least one surface of the insertion interface 3124 is inclined, and the cross-section of the insertion interface 3124 gradually decreases along the opening depth direction, and the shape of the insertion portion 322 is adapted to the insertion interface 3124.

[0095] In this embodiment, the cross-section of the insertion interface 3124 is gradually narrowed along the depth direction of the opening, and at least one side surface of the insertion interface 3124 is a slope. With this configuration, when the insertion part 322 enters the insertion interface 3124, even if the insertion part 322 and the insertion interface 3124 are not accurately aligned, the slope can be used to guide the insertion part 322, so that the insertion part 322 can be accurately inserted into the insertion interface 3124.

[0096] In some embodiments, the traction structure 31 is rotatably connected to the connecting part 321 so that the traction structure 31 can open outward to facilitate the entry and exit of the moving mold 2. The insertion part 322 is provided on the connecting part 321, and the outer surface of the insertion part 322 is inclined. When placing the moving mold 2, the traction structure 31 is first rotated outward relative to the connecting part 321 to avoid the moving mold 2. At this time, under the action of the elastic member 313, the column 312 abuts against the inclined surface of the insertion part 322. After the moving mold 2 is placed, the locking and releasing mechanism 3 needs to be activated to pull the moving mold 2. When the moving mold 2 is pressed against the fixed mold, the traction structure 31 only needs to be pushed inward. At this time, the column 312 will automatically slide away from the connector 311 along the inclined surface of the insertion part 322 until the traction structure 31 is in a vertical state. Then, the column 312 will approach the connector 321 under the action of the elastic member 313 to drive the pressing part 33 to press the moving mold 2, and make the insertion part 322 inserted into the insertion interface 3124 to lock the traction structure 31, so as to prevent the traction structure 31 from rotating outward in the mold closing state of the pressure holding fixture 100.

[0097] Please refer to Figure 1 , Figures 4 to 6 In one embodiment, one end of the traction structure 31 is rotatably connected to the base plate 32 so that the traction structure 31 can be flipped outward.

[0098] In this embodiment, the end of the traction structure 31 near the bottom plate 32 is rotatably connected to the bottom plate 32. With this configuration, the traction structure 31 can rotate outward to avoid the moving mold 2, thereby avoiding interference with the locking and releasing mechanism 3 during the process of the moving mold 2 moving in and out of the bottom mold 1, thus avoiding collision between the moving mold 2 and the locking and releasing mechanism 3, and improving the safety of the pressure holding structure during use.

[0099] Furthermore, in some embodiments, the traction structure 31 of the locking and releasing mechanism 3 includes a connector 311, a column 312 and an elastic member 313 as described in the above embodiment, and a connecting part 321 is provided on the side of the base plate 32. The connector 311 is rotatably connected to the connecting part 321, and the column 312 can be inserted and engaged with the connecting part 321 through the insertion part 322 and the insertion interface 3124 when the pressure holding fixture 100 is in the mold-closed state. In this configuration, when placing the moving mold 2, the traction structure 31 is first rotated outward relative to the connecting part 321 to avoid the moving mold 2. At this time, under the action of the elastic element 313, the column 312 abuts against the inclined surface of the insertion part 322. When the moving mold 2 is placed and the locking mechanism 3 needs to pull the moving mold 2 to press the moving mold 2 against the fixed mold, the traction structure 31 only needs to be pushed inward. At this time, the column 312 will automatically slide away from the connecting part 311 along the inclined surface of the insertion part 322 until the traction structure 31 is in a vertical state. Then, under the action of the elastic element 313, the column 312 will approach the connecting part 321 to drive the pressing part 33 to press the moving mold 2, and the insertion part 322 will be inserted into the insertion interface 3124 to lock the traction structure 31, preventing the traction structure 31 from rotating outward in the mold-closing state of the pressure-holding fixture 100.

[0100] Please refer to Figure 4 and Figure 12 In one embodiment, the surface of the moving mold 2 facing away from the bottom mold 1 is provided with an elastic pad 221, and the pressing part 33 presses against the elastic pad 221 at least.

[0101] In this embodiment, an elastic pad 221 is provided on the surface of the moving mold 2 away from the bottom mold 1. The elastic pad 221 is located at least at the pressing position of the pressing part 33, so that when the pressing part 33 presses on the moving mold 2, it presses on the elastic pad 221. With this arrangement, even if the surfaces of the moving mold 2 and the pressing part 33 are not flat, the deformation of the elastic pad 221 can ensure that the pressing part 33 can be pressed on different positions of the moving mold 2, thereby ensuring that the pressing part 33 applies uniform pressure to all parts of the moving mold 2, thereby ensuring that the product is subjected to uniform pressure and improving the pressure holding effect.

[0102] In one embodiment, the pressing part 33 is provided with one of a snap-fit ​​part 331 and a snap-fit ​​interface 224 on the pressing surface of the moving mold 2, and the other of the snap-fit ​​part 331 and the snap-fit ​​interface 224 is provided on the surface of the moving mold 2 opposite to the bottom mold 1. When the pressing part 33 is pressed onto the moving mold 2, the snap-fit ​​part 331 is inserted into the snap-fit ​​interface 224.

[0103] In this embodiment, a snap-fit ​​portion 331 can be provided on the surface of the pressing portion 33 facing the moving mold 2, and a snap-fit ​​interface 224 can be provided on the surface of the moving mold 2 facing the pressing portion 33; alternatively, a snap-fit ​​interface 224 can be provided on the surface of the pressing portion 33 facing the moving mold 2, and a snap-fit ​​portion 331 can be protruded on the surface of the moving mold 2 facing the pressing portion 33. When the pressing portion 33 is pressed onto the moving mold 2, the snap-fit ​​portion 331 is inserted into the snap-fit ​​interface 224, so that the moving mold 2 and the pressing portion 33 maintain a stable relative position, avoid the moving mold 2 from being misaligned relative to the pressing portion 33, and ensure that the moving mold 2 can be accurately aligned with the bottom mold 1, thereby ensuring that the first workpiece and the second workpiece are accurately aligned and assembled, improving the assembly accuracy and pressure holding effect.

[0104] Please refer to Figure 4 In one embodiment, the pressure-holding fixture 100 further includes a positioning post 34, which protrudes from the base plate 32. The moving mold 2 has a positioning hole 222, and the positioning post 34 is inserted into the positioning hole 222.

[0105] In this embodiment, a positioning post 34 is protruded on the base plate 32, and a positioning hole 222 is opened on the moving mold 2. When the moving mold 2 and the bottom mold 1 are closed, the moving mold 2 can move close to the bottom mold 1 along the positioning post 34 so that the moving mold 2 and the bottom mold 1 are accurately aligned and closed, thereby improving the assembly accuracy between the first workpiece and the second workpiece.

[0106] A bushing 223 can be installed in the positioning hole 222, and the positioning pin 34 passes through the bushing 223. The bushing 223 can reduce the wear when the moving mold 2 slides relative to the positioning pin 34. When the bushing 223 wears out, the bushing 223 can be replaced to maintain a good fit between the positioning pin 34 and the moving mold 2. The overall performance can be kept stable without replacing the entire moving mold 2, thus improving the service life of the moving mold 2.

[0107] Please refer to Figures 8 to 12 In one embodiment, the moving mold 2 includes a contour positioning mechanism 21 and a pressure block positioning mechanism 22. The contour positioning mechanism 21 is provided with the limiting space 213 and is disposed opposite to the bottom mold 1. The pressure block positioning mechanism 22 is pressed onto the contour positioning mechanism 21, and the pressing part 33 is pressed onto the pressure block positioning mechanism 22.

[0108] In this embodiment, the moving mold 2 includes a contour positioning mechanism 21 and a pressure block positioning mechanism 22. The contour positioning mechanism 21 is provided with a limiting space 213 and may also be provided with an adsorption structure 4 for adsorbing a second product. The contour positioning mechanism 21 is positioned opposite to the bottom mold 1 when it needs to be closed with the bottom mold 1. The pressure block positioning mechanism 22 is used to press the contour positioning mechanism 21 and can be pressed by the pressing part 33 of the locking mechanism, so that the contour positioning mechanism 21 is driven to close with the bottom mold 1 under the action of the locking mechanism. With this configuration, when the pressure holding fixture 100 is used for pressure holding of different products, only the contour positioning mechanism 21 of the bottom mold 1 and the moving mold 2 needs to be replaced, while the pressure block positioning mechanism 22 in the moving mold 2, which is used to cooperate with the locking mechanism, can be used for different contour positioning mechanisms 21 without replacing all parts, thus improving the flexibility and convenience of use.

[0109] Furthermore, the contour positioning mechanism 21 includes a main body 211 and a contour head 212. The main body 211 cooperates with and is pressed onto the pressure block positioning mechanism 22. The contour head 212 is located on the side of the main body 211 facing the bottom mold 1 and is provided with a limiting space 213. With this configuration, different products can be pressurized by changing the contour head 212.

[0110] Please refer to Figure 8 In one embodiment, the contour positioning mechanism 21 is provided with a clamping part 215, and the pressing block positioning mechanism 22 is formed with a clearance opening 225, and the clamping part 215 passes through the clearance opening 225.

[0111] In this embodiment, the contour positioning mechanism 21 is provided with a clamping part 215. When a mechanical device such as a robot arm is provided to drive the contour positioning mechanism 21 to move, the mechanical device can lock the direction positioning mechanism by clamping the clamping part 215 of the direction positioning mechanism. Furthermore, a clearance opening 225 is provided on the pressure block positioning mechanism 22, so that the clamping part 215 can pass through the clearance opening 225 for the mechanical device to clamp and lock.

[0112] Furthermore, a positioning structure, such as a positioning hole 222 or a positioning pin, can be provided on the contour positioning mechanism 21 to cooperate with the positioning pin or positioning hole 222 and other structures provided on the mechanical equipment, so that the mechanical equipment can accurately position, clamp and fix the contour positioning mechanism 21.

[0113] Please refer to Figure 1 In one embodiment, at least a portion of the outer surface of the pressure-holding fixture 100 is provided with a buffer pad 5 to reduce the risk of damage to the pressure-holding fixture 100 when subjected to an impact. The buffer pad 5 may be a rubber pad, a silicone pad, or other materials, and is not limited thereto.

[0114] This application also proposes a pressure-holding device, which includes a pressure-holding fixture 100 as described in any of the foregoing embodiments. In some embodiments, the adsorption structure 4 in the pressure-holding fixture 100 is a vacuum suction cup 41. In this case, a vacuum pumping device can be provided in the pressure-holding device and connected to the vacuum suction cup 41 so that the vacuum suction cup 41 can firmly hold the product.

[0115] In some embodiments, the pressure-holding device may also include a robotic arm or other mechanical equipment to control the movement of the moving mold 2 and other components in the pressure-holding fixture 100, thereby automating the pressure-holding and mold-separation processes, improving the automation level of the assembly process, and contributing to improved assembly accuracy. Of course, robotic arms and other mechanical equipment, along with a vacuum device, can be installed simultaneously according to actual needs; this is not limited here.

[0116] Since the pressure-holding device proposed in this application adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be repeated here.

[0117] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A pressure-holding fixture for holding pressure on a first workpiece and a second workpiece that are bonded together, characterized in that, The pressure-holding fixture includes: The bottom mold, wherein the bottom mold is provided with a contour cavity for placing the first workpiece; and A moving mold is disposed opposite to the bottom mold and is provided with a limiting space for placing the second workpiece. The moving mold can move closer to or further away from the bottom mold. Both the bottom mold and the moving mold are provided with adsorption structures. The adsorption structure on the bottom mold is used to adsorb and fix the first workpiece, and the adsorption structure on the moving mold is used to adsorb and fix the second workpiece. The pressure-holding fixture also includes a locking and releasing mechanism, which locks the moving mold and the bottom mold when they are closed. The locking and releasing mechanism includes at least one traction structure, which extends along the arrangement direction of the bottom mold and the moving mold and is elastically telescopic in the extension direction, so that the locking and releasing mechanism can apply an elastic force toward the bottom mold to the moving mold to lock the moving mold and the bottom mold. The locking and releasing mechanism also includes a base plate, the bottom mold is disposed on the base plate, one end of the traction structure is connected to the base plate, and the end of the traction structure away from the bottom mold is provided with a pressing part, which extends toward the moving mold side to press the moving mold.

2. The pressure-holding fixture as described in claim 1, characterized in that, The traction structure includes: A connector, one end of which is connected to the base plate, and the other end of which extends toward the moving mold side; A column, extending along the arrangement direction of the bottom mold and the moving mold, and slidably connected to the connecting member; the end of the column away from the bottom mold is connected to the clamping part; and An elastic element acts between the connector and the column to give the column a tendency to move toward the connector.

3. The pressure-holding fixture as described in claim 2, characterized in that, The column and the connector are inserted into each other.

4. The pressure-holding fixture as described in claim 3, characterized in that, The column is provided with insertion holes, through holes and movable holes arranged and connected in sequence along the extension direction of the column. The connector is inserted into the insertion hole, and the diameter of the through hole is smaller than the diameter of the movable hole. The traction structure also includes a locking member, which passes through the through hole. One end of the locking member located in the insertion hole is connected to the connector. One end of the locking member located in the movable hole is provided with a stop portion. The elastic member is located between the bottom wall of the movable hole and the stop portion.

5. The pressure-holding fixture as described in claim 2, characterized in that, The base plate has a connecting part on its side. One end of the connector is connected to the connecting part. One of the connecting part and the column has an insertion interface. The other of the connecting part and the column has a plug-in part. When the column slides relative to the connector, the plug-in part can enter and exit the insertion interface.

6. The pressure-holding fixture as described in claim 5, characterized in that, At least one surface of the connector is beveled, and the cross-section of the connector gradually decreases along the opening depth direction, and the shape of the plug portion is adapted to the connector.

7. The pressure-holding fixture as described in claim 1, characterized in that, One end of the traction structure is rotatably connected to the base plate, so that the traction structure can be flipped outward. And / or, the surface of the moving mold facing away from the bottom mold is provided with an elastic pad, and the pressing part presses against at least the elastic pad; And / or, the pressing part is provided with one of a snap-fit ​​part and a snap-fit ​​interface on the pressing surface of the moving mold, and the other of the snap-fit ​​part and the snap-fit ​​interface is provided on the surface of the moving mold opposite to the bottom mold, and the snap-fit ​​part is inserted into the snap-fit ​​interface when the pressing part is pressed onto the moving mold; And / or, the pressure-holding fixture further includes a positioning post, the positioning post protruding from the base plate, the moving mold having a positioning hole, and the positioning post being inserted into the positioning hole.

8. The pressure-holding fixture as described in claim 1, characterized in that, The moving mold includes a contour positioning mechanism and a pressure block positioning mechanism. The contour positioning mechanism is provided with the limiting space and is arranged opposite to the bottom mold. The pressure block positioning mechanism presses against the contour positioning mechanism, and the pressing part presses against the pressure block positioning mechanism.

9. The pressure-holding fixture as described in claim 8, characterized in that, The contour positioning mechanism is provided with a clamping part, and the pressure block positioning mechanism is formed with a clearance opening, with the clamping part passing through the clearance opening.

10. The pressure-holding fixture as described in any one of claims 1 to 9, characterized in that, The adsorption structure provided on the bottom mold includes at least one vacuum suction cup exposed in the mold cavity, and the bottom mold has an air extraction channel communicating with the vacuum suction cup; And / or, the adsorption structure provided in the moving mold includes at least one vacuum suction cup exposed in the limiting space, and the moving mold has an air extraction channel communicating with the vacuum suction cup; And / or, the moving mold has at least one limiting portion protruding from its surface facing the bottom mold, the limiting portion extending along at least a portion of the contour of the second workpiece to enclose and form the limiting space.

11. A pressure-holding device, characterized in that, The pressure-holding device includes the pressure-holding fixture as described in any one of claims 1 to 10.

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