Pressure holding fixture, locking device, unlocking device, and production line

Abstract

A pressure holding fixture (100), comprising a first carrier (110), a second carrier (120), and self-locking structures (130). Each self-locking structure comprises a moving module (131), a reset member (132), a snap-fit member (133), and an adjusting rod (134). When the moving module is located at a second position: the adjusting rod moves to a locking position, so that the snap-fit member protrudes from the moving module and is snap-fitted with the second carrier, and the first carrier and the second carrier are locked; or the adjusting rod moves to an unlocking position, so that the snap-fit member can retract into the moving module to release the snap-fit between the snap-fit member and the second carrier, the moving module can move to a first position under the action of the reset member, and the first carrier and the second carrier are separated. By means of the pressure holding fixture, the first carrier and the second carrier can hold the pressure for an assembled product, and the pressure holding fixture can be transferred in the pressure holding process and does not need to stay at a pressure-holding station for a long time, thereby effectively improving the overall efficiency of a production line. Also provided are a locking device (200), an unlocking device (300), and a production line.

Description

Pressure-maintaining fixtures, locking devices, unlocking devices, and production lines Technical Field

[0001] The present application relates to the field of mechanical processing technology, and in particular to a pressure-maintaining fixture, a locking device, an unlocking device, and a production line. Background Art

[0002] Currently, when processing certain assembled products, pressure maintenance is required to ensure the proper fit between parts. A common method for maintaining pressure is to set up a pressure maintenance station, where pressure-maintaining equipment is used to maintain pressure on the assembled product. This means that the equipment must continuously apply constant pressure to the product during the pressure maintenance period. To ensure this effective pressure maintenance, the assembled product must remain in the pressure maintenance station for an extended period, reducing the overall efficiency of the production line.

[0003] Summary of the Invention

[0004] Based on this, it is necessary to provide a pressure-holding fixture, locking device, unlocking device and production line that can improve production efficiency in order to address the problem that the existing pressure-holding equipment maintains pressure on the assembled products, affecting the overall efficiency of the production line.

[0005] A pressure-maintaining jig, comprising:

[0006] The first carrier and the second carrier can be controlled to be stacked or separated from each other to compress or release the product; and

[0007] Self-locking structure, including:

[0008] A movable module and a reset member are both provided on the first carrier, the movable module can reciprocate between a first position and a second position, and the reset member can provide a force for the movable module to move toward the first position; and

[0009] The clamping member and the adjusting rod are both provided on the movable module, and the adjusting rod can move relative to the movable module under the action of an external force to adjust the position of the clamping member;

[0010] When the mobile module is located at the second position:

[0011] The adjusting rod is moved to the locked position, so that the clamping member protrudes from the movable module and is clamped with the second carrier, and the first carrier and the second carrier are locked; or

[0012] The adjusting rod moves to the unlocking position, so that the clamping member can be retracted to the movable module to release the clamping member from the second carrier. The movable module can be moved to the first position under the action of the reset member, and the first carrier and the second carrier are separated.

[0013] In one embodiment, the self-locking structure further includes a first limiting member and a second limiting member, and a first mounting hole is formed through the first carrier along the stacking direction of the first carrier and the second carrier;

[0014] The movable module is movably arranged in the first mounting hole along the axial direction of the first mounting hole, the first limiting member and the second limiting member are respectively arranged at both ends of the first mounting hole, the reset member is arranged in the first mounting hole, and one end of the reset member abuts against the second limiting member, and the other end abuts against the movable module.

[0015] In one embodiment, the self-locking structure further includes a third limiting member, which is disposed on the second carrier, and when the movable module moves from the second position toward the first position, the clamping member protruding from the movable module can contact the third limiting member.

[0016] In one embodiment, the third limiting member includes an integrally arranged connecting portion and a limiting portion, the connecting portion is connected to the second carrier, the limiting portion has a limiting hole, the inner diameter of the limiting hole gradually decreases along the direction from the second position to the first position, and the clip protruding from the movable module can abut against the inner wall of the limiting hole.

[0017] In one embodiment, the movable module includes a fixedly connected movable block and a self-locking pin, the movable block is disposed in the first mounting hole and is reciprocatingly movable along the axial direction of the first mounting hole, and the end of the reset member away from the second limiting member abuts against the movable block;

[0018] The clamping member is provided at one end of the self-locking pin away from the moving block and can protrude from the self-locking pin or retract into the self-locking pin;

[0019] When the moving module is located at the second position, the end of the self-locking pin away from the moving block can extend into the second carrier stacked with the first carrier.

[0020] In one embodiment, the self-locking pin is provided with an accommodating channel and a communicating hole, the communicating hole is communicated with the accommodating channel, and the adjusting rod is slidably disposed in the accommodating channel;

[0021] When the adjusting rod moves to the locking position, the adjusting rod squeezes the clamping member through the communicating hole so that the clamping member protrudes from the self-locking pin;

[0022] When the adjusting rod moves to the unlocking position, the clamping member can be retracted to the self-locking pin through the communicating hole to release the clamping member from the second carrier.

[0023] In one embodiment, the adjusting rod is provided with an avoidance groove;

[0024] When the adjusting rod moves to the locking position, the avoiding groove and the communicating hole are staggered;

[0025] When the adjusting rod moves to the unlocking position, the avoidance groove is opposite to the communicating hole, and the clamping member can enter the avoidance groove through the communicating hole to retract to the self-locking pin.

[0026] In one embodiment, an adsorption component capable of adsorbing the clamping component is provided in the avoidance groove.

[0027] In one embodiment, at least one of the first carrier and the second carrier is provided with a heating module, and the heating module is used to heat the product pressed by the first carrier and the second carrier.

[0028] In one embodiment, the heating module includes a heating rod and a heat-conducting block, and the heat-conducting block is used to transfer the heat of the heating rod to the product.

[0029] In one embodiment, the first carrier is provided with a first positioning portion, and the second carrier is provided with a second positioning portion that cooperates with the first positioning portion.

[0030] In one embodiment, the pressure-maintaining fixture includes a plurality of the self-locking structures.

[0031] A locking device for the above-mentioned pressure-maintaining fixture, the locking device comprising:

[0032] frame;

[0033] a pressing mechanism, provided on the frame, for pressing the first carrier and the second carrier that are stacked together; and

[0034] The locking mechanism is arranged on the frame, and the locking mechanism includes a first pressing member and a second pressing member movable relative to the frame, the first pressing member can push the movable module to the second position, and the second pressing member can push the adjustment rod to the locking position.

[0035] In one embodiment, the locking mechanism can be adjusted relative to the frame so that the locking mechanism is opposite to the self-locking structure.

[0036] In one embodiment, the clamping mechanism includes a clamping drive, a base plate, an elastic member and a pressure plate. The clamping drive is transmission-connected to the base plate. One end of the elastic member is connected to the side of the base plate away from the clamping drive, and the other end is connected to the pressure plate. The side of the pressure plate away from the elastic member can be pressed against the first carrier or the second carrier.

[0037] In one embodiment, the clamping mechanism further includes a connecting rod, which extends along the moving direction of the substrate, and one end of the connecting rod is transmission-connected to the clamping drive member, and the other end is connected to the substrate, and the substrate can adjust its position relative to the connecting rod along the length direction of the connecting rod.

[0038] In one embodiment, the locking mechanism further includes a connecting member, a first pressing drive member and a second pressing drive member, the connecting member is used to connect to the frame, the first pressing drive member is arranged on the connecting member, and is simultaneously transmission-connected to the first pressing member and the second pressing drive member to drive the first pressing member and the second pressing drive member to approach or move away from the pressure-holding jig, and the second pressing drive member is transmission-connected to the second pressing member to drive the second pressing member to approach or move away from the pressure-holding jig.

[0039] An unlocking device, used for the above-mentioned pressure-maintaining fixture, the unlocking device comprising:

[0040] a positioning frame capable of positioning the first carrier and the second carrier that are stacked;

[0041] a pressing mechanism, provided on the positioning frame, for pressing and fixing the first carrier and the second carrier positioned on the positioning frame and stacked; and

[0042] A lifting mechanism is provided on the positioning frame, and the lifting mechanism includes a movable lifting member, and the lifting member can abut against and push the adjusting rod to push the adjusting rod located at the locked position to the unlocked position.

[0043] In one embodiment, the pressing mechanism includes a pressing driving member and a pressing member, and the pressing driving member is transmission-connected to the pressing member to drive the pressing member to move closer to or away from the pressure-maintaining fixture positioned on the positioning frame, and the pressing member is provided with a avoidance hole for the adjusting rod to extend into.

[0044] A production line comprises the above-mentioned pressure-maintaining fixture, the above-mentioned locking device and the above-mentioned unlocking device. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0046] FIG1 is a schematic structural diagram of a pressure-maintaining fixture provided in one embodiment of the present application;

[0047] FIG2 is a schematic cross-sectional view of the pressure-maintaining fixture shown in FIG1 , in which the first carrier and the second carrier are capable of being separated from each other;

[0048] FIG3 is a schematic cross-sectional view of the pressure-maintaining fixture shown in FIG1 , in which the first carrier and the second carrier are locked and fixed;

[0049] FIG4 is a schematic structural diagram of the second carrier and the third position-limiting member in the pressure-maintaining fixture shown in FIG1 ;

[0050] FIG5 is a schematic structural diagram of the self-locking structure in the pressure-maintaining fixture shown in FIG1 ;

[0051] FIG6 is an axonometric diagram of the self-locking structure shown in FIG5 without the third limiting member;

[0052] FIG7 is a schematic structural diagram of the self-locking structure shown in FIG5 without the first limiting member, the second limiting member and the third limiting member;

[0053] FIG8 is a schematic structural diagram of a locking device provided in another embodiment of the present application;

[0054] FIG9 is a schematic structural diagram of the locking device shown in FIG8 from another angle;

[0055] FIG10 is a schematic structural diagram of the clamping mechanism in the locking device shown in FIG9 ;

[0056] FIG11 is a schematic structural diagram of the locking mechanism in the locking device shown in FIG9 ;

[0057] FIG12 is a schematic structural diagram of an unlocking device provided in another embodiment of the present application;

[0058] FIG13 is a schematic structural diagram of the pressing mechanism and the lifting mechanism in the unlocking device shown in FIG12 . DETAILED DESCRIPTION

[0059] To make the above-mentioned objects, features, and advantages of the present application more clearly understood, the specific embodiments of the present application are described in detail below with reference to the accompanying drawings. The following description sets forth many specific details to facilitate a full understanding of the present application. However, the present application can be implemented in many other ways than those described herein, and those skilled in the art can make similar improvements without violating the scope of the present application. Therefore, the present application is not limited to the specific embodiments disclosed below.

[0060] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present application.

[0061] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of such features. Throughout the description of this application, "plurality" means at least two, for example, two, three, etc., unless otherwise specifically defined.

[0062] In this application, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in this application based on specific circumstances.

[0063] In this application, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0064] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

[0065] As shown in Figures 1 to 3 , an embodiment of the present application provides a pressure-maintaining fixture 100 that can compress and maintain pressure on a product. The pressure-maintaining fixture 100 includes a first carrier 110 , a second carrier 120 , and a self-locking structure 130 .

[0066] The first carrier 110 and the second carrier 120 can be controllably stacked or separated from each other to compress or release the product.

[0067] The self-locking structure 130 includes a movable module 131, a reset member 132, a clamping member 133, and an adjustment rod 134. Both the movable module 131 and the reset member 132 are disposed on the first carrier 110. The movable module 131 is capable of reciprocating between a first position and a second position. The reset member 132 provides a force for the movable module 131 to move toward the first position.

[0068] The clamping member 133 and the adjusting rod 134 are both disposed on the movable module 131 . The adjusting rod 134 can move relative to the movable module 131 under the action of an external force to adjust the position of the clamping member 133 .

[0069] When the moving module 131 is located at the second position:

[0070] The adjusting rod 134 moves to the locked position, so that the clamping member 133 protrudes from the movable module 131 and is engaged with the second carrier 120, and the first carrier 110 and the second carrier 120 are locked; or the adjusting rod 134 moves to the unlocked position, so that the clamping member 133 can be retracted into the movable module 131 to release the engagement between the clamping member 133 and the second carrier 120, and the movable module 131 can be moved to the first position under the action of the reset member 132, and the first carrier 110 and the second carrier 120 are separated.

[0071] It should be noted that in this embodiment, the product is a display screen and a midframe that fit together. The first carrier 110 and the second carrier 120 are used to press the two together. Of course, in other embodiments, the product can also be other. For ease of understanding, the following description uses the display screen and midframe as an example.

[0072] Initially, the first carrier 110 and the second carrier 120 are separated from each other, and the middle frame and the display screen are respectively carried on the first carrier 110 and the second carrier 120. The movable module 131 is located in the first position under the action of the reset member 132, and the adjustment rod 134 is in the unlocked position.

[0073] During the pressure holding process, the second carrier 120 is transported to the pressing station through the flow channel, and the first carrier 110 is transported to the pressing station by a robot or a transfer device, and then the first carrier 110 and the second carrier 120 are pressed together so that the first carrier 110 and the second carrier 120 are stacked. After the pressing is completed, as shown in Figure 2, an external force is applied to push the movable module 131 to overcome the force of the reset member 132 and move it to the second position, and then the adjustment rod 134 is moved to the locked position, as shown in Figure 3. Next, the external force is removed, and the reset member 132 applies a force toward the first position to the movable module 131, and the protruding clamping member 133 is clamped with the second carrier 120, so that the stacked first carrier 110 and the second carrier 120 are locked and fixed.

[0074] After the pressure is maintained, an external force is applied to push the adjustment rod 134 to the unlocked position. The return member 132 continues to provide a force to move the movable module 131 toward the first position, while the clamping member 133 can retract the movable module 131 under the action of the second carrier 120. Next, the stacked first carrier 110 and second carrier 120 are separated to obtain the product.

[0075] By using the above-mentioned pressure-holding jig 100, the first carrier 110 and the second carrier 120 can hold pressure on the assembled product, and the pressure-holding jig 100 can be circulated during the pressure-holding process without having to stay at the pressure-holding station for a long time, thereby effectively improving the overall efficiency of the production line.

[0076] In addition, the first carrier 110 and the second carrier 120 are locked and fixed and unlocked and separated by the self-locking structure 130, which is simple to operate and further improves the operating efficiency.

[0077] Optionally, in order to facilitate the clamping member 133 to protrude from the movable module 131 or retract into the movable module 131 , the clamping member 133 is preferably a ball.

[0078] Referring to Figure 4 , in one embodiment, at least one of the first carrier 110 and the second carrier 120 is equipped with a heating module. The heating module is used to heat the product pressed between the first carrier 110 and the second carrier 120 to keep the glue at an optimal operating temperature, thereby accelerating the bonding of components in the product.

[0079] Specifically, in the embodiments shown in Figures 2 and 3, the heating module is disposed on the second carrier 120, which is the carrier used to support the display screen in this application. Of course, in other embodiments, the heating module can also be disposed on the first carrier 110 or on both the first carrier 110 and the second carrier 120.

[0080] Furthermore, the heating module includes a heating rod 122 and a heat conducting block 123. The heating rod 122 and the heat conducting block 123 are both arranged on the second carrier 120 next to the adsorption panel 124 for adsorbing the product. The heating rod 122 is used to generate heat, and the heat conducting block 123 is used to transfer the heat of the heating rod 122 to the product.

[0081] Optionally, the heat conducting block 123 is a brass block. The heating rod 122 is inserted into the heat conducting block 123. Of course, in other embodiments, the heat conducting block 123 may also be made of other materials.

[0082] In one embodiment, the adsorption panel 124 is provided with a hollow structure, and a sealing ring is provided around the side of the adsorption panel 124. In this way, a tight seal can be ensured when adsorbing products, while providing comprehensive and uniform vacuum adsorption force, thereby ensuring stable adsorption of products.

[0083] In one embodiment, the first carrier 110 is provided with a first positioning portion, and the second carrier 120 is provided with a second positioning portion 125 that cooperates with the first positioning portion. The first positioning portion and the second positioning portion 125 can cooperate with each other to position the first carrier 110 and the second carrier 120 during the stacking process.

[0084] Specifically, in the embodiment shown in FIG4 , the second positioning portion 125 includes at least two positioning pins, and the corresponding first positioning portion includes at least two positioning holes, with the positioning pins and positioning holes corresponding one to one. Thus, when the first carrier 110 and the second carrier 120 are stacked, the positioning pins are inserted into the corresponding positioning holes, thereby positioning the first carrier 110 and the second carrier 120 relative to each other.

[0085] Of course, in other embodiments, the first positioning portion may also be a positioning pin, and the corresponding second positioning portion 125 may be a positioning hole that cooperates with the positioning pin.

[0086] Referring to Figures 2 and 3 , in one embodiment, the first carrier 110 defines a first mounting hole 111 extending through the first carrier 110 and the second carrier 120 along the stacking direction. A movable module 131 is movably disposed in the first mounting hole 111 along the axial direction of the first mounting hole 111. A reset member 132 is disposed within the first mounting hole 111 to provide a force that causes the movable module 131 to move along the axial direction of the first mounting hole 111 toward the first position.

[0087] Furthermore, a second mounting hole 126 is formed through the second carrier 120 along the stacking direction of the first carrier 110 and the second carrier 120 .

[0088] When the first carrier 110 and the second carrier 120 are stacked, the movable module 131 can extend into the second mounting hole 126 during the process of moving toward the second position.

[0089] As can be seen, the engaging member 133 is disposed at the portion of the movable module 131 that can extend into the second mounting hole 126 . Thus, when the movable module 131 moves from the second position to the first position, the engaging member 133 protruding from the movable module 131 can engage with the second carrier 120 .

[0090] Referring to Figures 5 to 7 , in one embodiment, the self-locking structure 130 further includes a first stopper 135 and a second stopper 136. The first stopper 135 and the second stopper 136 are respectively disposed at opposite ends of the first mounting hole 111. One end of the reset member 132 abuts the second stopper 136, and the other end abuts the movable module 131, thereby pushing the movable module 131 toward the first stopper 135.

[0091] When the movable module 131 contacts the first limiting member 135 , the movable module 131 is located at the first position.

[0092] Optionally, in this embodiment, the reset member 132 is a spring. It is understood that when an external force is applied to push the movable module 131 toward the second position to overcome the force of the reset member 132, the movable module 131 moves toward the second stopper 136. However, because the reset member 132 is disposed between the movable module 131 and the second stopper 136, the movable module 131 does not abut the second stopper 136.

[0093] In one embodiment, the self-locking structure 130 further includes a third stopper 137. The third stopper 137 is disposed on the second carrier 120, and during the movement of the movable module 131 from the second position to the first position, the engaging member 133 protruding from the movable module 131 can contact the third stopper 137 to engage with the third stopper 137 or retract into the movable module 131 under the action of the third stopper 137.

[0094] 3 , the third limiting member 137 includes an integral connecting portion 1371 and a limiting portion 1372 . The connecting portion 1371 is connected to the wall of the second mounting hole 126 , and the limiting portion 1372 is capable of contacting the connecting member 133 protruding from the movable module 131 .

[0095] 2 and 3 , the first limiting member 135, the second limiting member 136, and the third limiting member 137 are all ring-shaped. The first limiting member 135 allows a component that applies an external force to the movable module 131 to pass through, while the second limiting member 136 and the third limiting member 137 allow the movable module 131 to pass through.

[0096] In other embodiments, the first limiting member 135, the second limiting member 136, and the third limiting member 137 may also be structures integrally formed on the first carrier 110 and the second carrier 120. Of course, in a preferred embodiment, the first limiting member 135, the second limiting member 136, and the third limiting member 137 are all detachable for easy maintenance.

[0097] In one embodiment, when the movable module 131 is located at the first position, the adjusting rod 134 is located at the unlocking position, and the locking member 133 is retracted into the movable module 131 .

[0098] When the movable module 131 moves toward the second position, the clamping member 133 is no longer opposite to the limiting portion 1372, but is opposite to the inner wall of the second mounting hole 126 or the connecting portion 1371. Since there is space for the clamping member 133 to protrude between the movable module 131 and the inner wall of the second mounting hole 126 or the connecting portion 1371, the adjusting rod 134 is moved to the locked position at this time, and the clamping member 133 can protrude from the movable module 131.

[0099] Furthermore, the limiting portion 1372 has a limiting hole 1373. The inner diameter of the limiting hole 1373 gradually decreases from the second position to the first position. Thus, when the movable module 131 moves from the second position to the first position, when the adjustment rod 134 is in the unlocked position, the engaging member 133 protruding from the movable module 131 can abut against the inner wall of the limiting hole 1373 and gradually retract into the movable module 131 under the action of the inner wall.

[0100] In one embodiment, the movable module 131 includes a fixedly connected movable block 138 and a self-locking pin 139. The movable block 138 is disposed in the first mounting hole 111 and can move back and forth along the axial direction of the first mounting hole 111, so that the movable module 131 can move back and forth between the first position and the second position. The end of the reset member 132 away from the second limiting member 136 abuts against the movable block 138 to push the movable module 131 toward the first position. One end of the self-locking pin 139 is connected to the movable block 138, and the clamping member 133 is disposed at the end of the self-locking pin 139 away from the movable block 138, and can protrude from the self-locking pin 139 or retract to the self-locking pin 139.

[0101] When the moving module 131 is located at the second position, the end of the self-locking pin 139 away from the moving block 138 can extend into the second carrier 120 stacked with the first carrier 110 .

[0102] To lock the stacked first and second carriers 110 and 120, the movable module 131 is moved to the second position, allowing the end of the self-locking pin 139, away from the movable block 138, to extend into the second carrier 120. The adjustment rod 134 is then moved to the locked position. Under the action of the reset member 132, the movable module 131 moves toward the first position, and the engaging member 133 protruding from the movable module 131 engages with the second carrier 120, thereby locking the first and second carriers 110 and 120.

[0103] It can be understood that when the reset member 132 is a spring, the reset member 132 is sleeved on the outside of the self-locking pin 139, and one end of the reset member 132 is supported on the second limit member 136, and the other end is in contact with the moving block 138 to push the moving block 138 to move, thereby pushing the moving module 131 to move toward the first position.

[0104] Furthermore, the movable block 138 is provided with a through hole, and the self-locking pin 139 is provided with an accommodating channel and a communicating hole 1391. The through hole and the communicating hole 1391 are both connected to the accommodating channel. The adjusting rod 134 is slidably disposed in the accommodating channel.

[0105] Optionally, one end of the adjustment rod 134 is passed through the through hole.

[0106] When the adjusting rod 134 moves to the locked position, the adjusting rod 134 squeezes the clamping member 133 through the connecting hole 1391 so that the clamping member 133 protrudes from the self-locking pin 139; when the adjusting rod 134 moves to the unlocked position, the clamping member 133 can be retracted to the self-locking pin 139 through the connecting hole 1391 to release the clamping member 133 from the second carrier 120.

[0107] It should be noted that when the adjusting rod 134 extrude the clip 133 through the communicating hole 1391, it is meant to extrude the clip 133 from the accommodating passage through the communicating hole 1391, so that the clip 133 protrudes beyond the self-locking pin 139. When the clip 133 retracts to the self-locking pin 139, the clip 133 retracts to the accommodating passage, and a portion of the clip 133 can be located within the communicating hole 1391.

[0108] In one embodiment, the adjusting rod 134 defines a relief groove 1341 .

[0109] When the adjusting rod 134 moves to the locked position, the avoidance groove 1341 is staggered with the connecting hole 1391 to squeeze out the clamping part 133; when the adjusting rod 134 is in the unlocked position, the avoidance groove 1341 is opposite to the clamping part 133, and the clamping part 133 can enter the avoidance groove 1341 through the connecting hole 1391 to retract to the self-locking pin 139.

[0110] 2 and 3 , when the clip 133 is required to protrude beyond the self-locking pin 139 , the adjusting rod 134 is moved to the locked position. During the movement, the adjusting rod 134 squeezes out the clip 133 , causing the clip 133 to protrude beyond the self-locking pin 139 .

[0111] Furthermore, it should be noted that when the self-locking pin 139 extends into the second mounting hole 126 of the second carrier 120, the clip 133, which protrudes from the self-locking pin 139, is restrained by the inner wall of the second mounting hole 126 or the connection portion 1371 and does not disengage from the self-locking pin 139. When the first carrier 110 and the second carrier 120 are separated, the clip 133 retracts back to the self-locking pin 139, i.e., enters the avoidance groove 1341. In this case, an attracting member, such as a magnet, can be provided within the avoidance groove 1341 to attract and secure the clip 133, preventing it from disengaging from the self-locking pin 139.

[0112] Optionally, the adjusting rod 134 may also be made of magnetic material, and the clamping member 133 may be an iron ball.

[0113] In order to facilitate understanding of the technical solution of the present application, the locking process and unlocking process of the pressure-maintaining fixture 100 in the above embodiment are described with reference to FIG2 and FIG3 :

[0114] Initially, the first carrier 110 and the second carrier 120 are stacked, the moving module 131 is located at the first position, and the adjusting rod 134 is located at the unlocking position.

[0115] During the locking process, an external force is first applied to the moving block 138 so that the moving module 131 moves to the second position. Then an external force is applied to the adjusting rod 134 so that the adjusting rod 134 moves to the locked position. The adjusting rod 134 squeezes the clamping member 133 through the connecting hole 1391, and the clamping member 133 protrudes from the self-locking pin 139. Next, the external force is removed, and the reset member 132 pushes the moving module 131 toward the first position. In the process of the moving module 131 moving toward the first position, the clamping member 133 protruding from the self-locking pin 139 is engaged with the limiting portion 1372 of the third limiting member 137, thereby achieving locking between the first carrier 110 and the second carrier 120. In this way, since the reset member 132 can continuously provide thrust to the moving module 131, a certain pressing force can be exerted between the first carrier 110 and the second carrier 120, thereby achieving a pressure-maintaining effect.

[0116] After the pressure is maintained, during the unlocking process, an external force is applied to the adjustment rod 134, causing the adjustment rod 134 to move to the unlocked position, with the avoidance groove 1341 of the adjustment rod 134 facing the connecting hole 1391. Under the action of the reset member 132, the movable module 131 moves toward the first position, causing the clamping member 133 to roll along the inner wall of the limiting hole 1373 and, under the action of the inner wall of the limiting hole 1373, enter the avoidance groove 1341, thereby retracting to the self-locking pin 139. After the clamping member 133 retracts to the self-locking pin 139, the movable module 131 moves to the first position under the action of the reset member 132. The first carrier 110 and the second carrier 120 can be separated from each other, thereby completing the unlocking.

[0117] In one embodiment, the pressure maintaining jig 100 includes a plurality of self-locking structures 130 .

[0118] In conjunction with the above embodiments, it can be determined that when the first carrier 110 and the second carrier 120 are locked and fixed by the self-locking structure 130, the pressing force between the first carrier 110 and the second carrier 120 is provided by the reset member 132. Therefore, the multiple self-locking structures 130 can increase the pressing force between the first carrier 110 and the second carrier 120, ensure the pressure-maintaining effect, and also make the locking effect between the first carrier 110 and the second carrier 120 more stable.

[0119] Please refer to FIG. 8 . The present application provides a locking device 200 . The locking device 200 is used to lock the pressure-maintaining fixture 100 in the above embodiment.

[0120] Referring to Figures 9 to 11 , the locking device 200 further includes a frame 210, and a pressing mechanism 220 and a locking mechanism 230 disposed on the frame 210. The pressing mechanism 220 is used to compress the stacked first and second carriers 110, 120. The locking mechanism 230 includes a first pressing member 231 and a second pressing member movable relative to the frame 210. The first pressing member 231 is capable of pushing the movable module 131 to the second position, and the second pressing member is capable of pushing the adjustment rod 134 to the locked position.

[0121] During the locking process of the stacked first and second carriers 110, 120, the stacked first and second carriers 110, 120 are first moved to the locking device 200, and then the pressing mechanism 220 presses the first and second carriers 110, 120 together. Next, the first pressing member 231 pushes the movable module 131, causing the movable module 131 to overcome the force of the reset member 132 and move to the second position. The second pressing member then pushes the adjustment rod 134 to the locked position, causing the engaging member 133 in the movable module 131 to protrude. The first pressing member 231 and the second pressing member are then separated from the movable module 131 and the adjustment rod 134, respectively. Under the action of the reset member 132, the movable module 131 moves toward the first position. During this movement, the engaging member 133 protruding from the movable module 131 engages with the second carrier 120, thereby locking the compressed first and second carriers 110, 120.

[0122] It should be noted that, in this embodiment, the pressure-maintaining jig 100 is transported to the locking device 200 through the flow channel, and the pressing mechanism 220 and the locking mechanism 230 directly process the pressure-maintaining jig 100 on the flow channel.

[0123] In one embodiment, the pressing mechanism 220 includes a pressing driver 221, a base plate 222, an elastic member 223, and a pressure plate 224. The pressing driver 221 is in transmission connection with the base plate 222 to drive the base plate 222 to move. One end of the elastic member 223 is connected to the side of the base plate 222 facing away from the pressing driver 221, and the other end is connected to the pressure plate 224. The side of the pressure plate 224 facing away from the elastic member 223 can press against the first carrier 110 or the second carrier 120 to compress the stacked first and second carriers 110, 120.

[0124] In addition, since the elastic member 223 is disposed between the base plate 222 and the pressing plate 224 , the force exerted by the pressing plate 224 to press the first carrier 110 and the second carrier 120 is provided by the elastic member 223 , thereby preventing excessive pressure from damaging the product.

[0125] Optionally, the pressing driving member 221 is a pneumatic cylinder or an electric cylinder, and the elastic member 223 is a spring. In addition, the pressing mechanism 220 includes a plurality of elastic members 223 to ensure that the first carrier 110 and the second carrier 120 are pressed tightly.

[0126] Furthermore, the pressing mechanism 220 further includes a guide rod 225. The guide rod 225 is movably connected to the frame 210. The base plate 222 is connected to the guide rod 225 so that the guide rod 225 guides the movement of the base plate 222.

[0127] Similarly, it can be determined that the pressure plate 224 can also be movably connected to the side of the base plate 222 away from the clamping drive member 221 through the same rod-shaped structure as the guide rod 225, and the elastic member 223 is sleeved on the outside of the rod-shaped structure and located between the base plate 222 and the pressure plate 224.

[0128] In one embodiment, the clamping mechanism 220 further includes a connecting rod 226. The connecting rod 226 extends along the direction of movement of the substrate 222, and one end of the connecting rod 226 is in transmission connection with the clamping driver 221, while the other end is connected to the substrate 222. The substrate 222 can be adjusted relative to the connecting rod 226 along the length of the connecting rod 226. In this way, while the stroke of the substrate 222 driven by the clamping driver 221 remains unchanged, the position of the substrate 222 can be adjusted to allow the clamping mechanism 220 to clamp pressure-maintaining fixtures 100 of different thicknesses.

[0129] Optionally, a connecting nut is provided on the base plate 222 , the connecting nut can rotate relative to the base plate 222 , and the connecting nut is threadedly connected to an end of the connecting rod 226 away from the pressing drive member 221 .

[0130] In one embodiment, the locking mechanism 230 can adjust its position relative to the frame 210 so that the locking mechanism 230 is opposite to the self-locking structure 130, thereby ensuring that the first pressing member 231 and the second pressing member in the locking mechanism 230 can respectively abut against the movable module 131 and the adjusting rod 134 during the movement process.

[0131] Furthermore, the locking mechanism 230 further includes a connecting member 232. The connecting member 232 has a clamping portion 2321, which is used to clamp with the frame 210 and can adjust its position relative to the frame 210. The first pressing member 231 and the second pressing member are both provided on the connecting member 232.

[0132] Furthermore, a crossbeam 211 is provided on the frame 210. The clamping portion 2321 is used to clamp with the crossbeam 211 and can adjust the position along the length direction of the crossbeam 211.

[0133] Specifically, in the embodiment shown in Figures 1 and 8 , the pressure-maintaining fixture 100 is equipped with six self-locking structures 130, arranged in two rows, with each row including three self-locking structures 130. Two crossbeams 211 are provided on the corresponding frame 210, each of which is equipped with three locking mechanisms 230. Thus, in actual use, the positions of the locking mechanisms 230 are adjusted according to the positions of the self-locking structures 130 in each row, so that the three locking mechanisms 230 on each crossbeam 211 are aligned with the corresponding three self-locking structures 130.

[0134] In one embodiment, the locking mechanism 230 further includes a first pressing member 233 and a second pressing member 234. The first pressing member 233 is disposed on the connecting member 232 and is in transmission connection with both the first pressing member 231 and the second pressing member 234 to drive the first pressing member 231 and the second pressing member 234 to move, thereby causing the first pressing member 231 and the second pressing member 234 to move closer to or further away from the pressure-maintaining fixture 100. The second pressing member 234 is in transmission connection with the second pressing member to drive the second pressing member to move, thereby causing the second pressing member to move closer to or further away from the pressure-maintaining fixture 100.

[0135] Optionally, the first pressing driving member 233 is a cylinder, and the second pressing driving member 234 is a finger cylinder. Of course, in other embodiments, the first pressing driving member 233 and the second pressing driving member 234 can also be other driving structures.

[0136] It should be noted that in actual use, when the pressure-maintaining jig 100 is moved to the locking device 200, the first carrier 110 and the second carrier 120 are arranged vertically in a stacked arrangement. The connecting member 232 can be adjusted horizontally relative to the frame 210. The pressing driver 221, the first pressing driver 233, and the second pressing driver 234 respectively drive the base plate 222, the first pressing member 231, and the second pressing member to move vertically toward or away from the pressure-maintaining jig 100.

[0137] In addition, the second pressing member is used to abut against the adjusting rod 134 , so the second pressing member may also be rod-shaped, and the diameter of the second pressing member may be the same as the diameter of the adjusting rod 134 .

[0138] Please refer to FIG. 12 and FIG. 13 . The present application further provides an unlocking device 300 , which is used to unlock the pressure-maintaining jig 100 in the above embodiment.

[0139] Furthermore, the unlocking device 300 includes a positioning frame 310, and a pressing mechanism 320 and a lifting mechanism 330 disposed on the positioning frame 310. The positioning frame 310 is used to position the stacked first carrier 110 and the second carrier 120. The pressing mechanism 320 is used to press and secure the stacked first carrier 110 and the second carrier 120 positioned by the positioning frame 310.

[0140] The lifting mechanism 330 includes a movable lifting member 331. The lifting member 331 can abut against and push the adjustment rod 134 to push the adjustment rod 134 in the locked position to the unlocked position.

[0141] To unlock the locked first and second carriers 110, 120, the stacked first and second carriers 110, 120 are first positioned using the positioning frame 310. The pressure-maintaining fixture 100 is then pressed and secured on the positioning frame 310 using the pressing mechanism 320. Next, the lifting member 331 is moved until it contacts and pushes the adjustment rod 134, causing it to move to the unlocked position. The moving module 131 is then moved to the first position under the action of the reset member 132, allowing the first and second carriers 110, 120, to separate from each other.

[0142] It should be noted that after the adjustment rod 134 moves to the unlocking position, the action of the self-locking structure 130 has been described in the above embodiment and will not be repeated here.

[0143] In one embodiment, the pressing mechanism 320 includes a pressing driving member 321 and a pressing member 322. The pressing driving member 321 is disposed on the positioning frame 310 and is in transmission connection with the pressing member 322 to drive the pressing member 322 toward or away from the pressure-maintaining fixture 100 positioned on the positioning frame 310, thereby compressing or releasing the pressure-maintaining fixture 100.

[0144] Optionally, the pressing driving member 321 is a cylinder. Of course, the pressing driving member 321 can also be other driving structures.

[0145] In one embodiment, during movement, the pressing member 322 can abut against the first stopper 135 of the pressure-maintaining fixture 100 positioned by the positioning frame 310. Furthermore, a clearance hole is defined on one end of the pressing member 322 facing the pressure-maintaining fixture 100, so that when the pressing member 322 abuts against the first stopper 135, the adjustment rod 134 can extend into the clearance hole for clearance.

[0146] In one embodiment, the lifting mechanism 330 further includes a lifting driver 332. The lifting driver 332 is disposed on the positioning frame 310 and is in transmission connection with the lifting member 331 to drive the lifting member 331 toward or away from the pressure-maintaining fixture 100 positioned on the positioning frame 310.

[0147] Optionally, the lifting member 331 is also columnar.

[0148] It should be noted that in actual use, both the pressing member 322 and the lifting member 331 move in the vertical direction. The pressing member 322 presses against the upper surface of the pressure-maintaining jig 100 to compress the pressure-maintaining jig 100. The lifting member 331 is located on the lower surface of the pressure-maintaining jig 100, and when it moves, it abuts and pushes the adjustment rod 134 upward, causing the adjustment rod 134 to move to the unlocked position.

[0149] In addition, specifically in the embodiment shown in FIG. 1 and FIG. 12 , with respect to the multiple self-locking structures 130 on the pressure-maintaining jig 100 , the unlocking device 300 in this embodiment also includes multiple pressing mechanisms 320 and lifting mechanisms 330 .

[0150] The present application also provides a production line, which includes the pressure-maintaining fixture 100, the locking device 200 and the unlocking device 300 in the above embodiment.

[0151] To facilitate understanding of the technical solution of the present application, the assembly process of the first carrier 110 and the second carrier 120 on the production line and the locking and unlocking processes of the pressure-maintaining fixture 100 are described in conjunction with the above embodiments.

[0152] The runner first transports the second carrier 120 carrying the display to the assembly station. A robotic arm then places the first carrier 110 carrying the midframe onto the second carrier 120 at the assembly station. The first and second carriers 110, 120, are positioned relative to each other using first and second positioning members 125, with the first carrier 110 positioned above the second carrier 120 (described later as the pressure-holding jig 100).

[0153] Next, the flow channel transports the pressure-holding jig 100 to the self-locking station (before locking the pressure-holding jig 100, the locking device 200 located at the self-locking station can adjust the position of the locking mechanism 230 according to the position of the self-locking structure 130 on the pressure-holding jig 100). The pressing drive 221 in the pressing mechanism 220 drives the base plate 222 to move toward the pressure-holding jig 100, so that the pressure plate 224 presses against the pressure-holding jig 100 to press and fix the pressure-holding jig 100. Then, the first pressing drive 233 in the locking mechanism 230 drives the first pressing member 231 and the second pressing drive 234 to move toward the pressure-holding jig 100 until the first pressing member 231 abuts and pushes the moving block 138, causing the moving module 131 to move to the second position. The second pressing member 234 then drives the second pressing member toward the pressure-maintaining fixture 100 until the second pressing member contacts and pushes the adjusting rod 134, causing the adjusting rod 134 to move to the locked position. The adjusting rod 134 squeezes the connecting member 133 through the connecting hole 1391, causing the connecting member 133 to protrude from the self-locking pin 139. The first pressing member 231 and the second pressing member are then removed, and the moving block 138 moves under the action of the reset member 132, causing the moving module 131 to move toward the first position until the connecting member 133 protruding from the self-locking pin 139 engages with the third limiting member 137 on the second carrier 120, thereby locking the first carrier 110 and the second carrier 120.

[0154] After the first carrier 110 and the second carrier 120 are locked, the pressure between the two is provided by the reset member 132. Next, the pressure-maintaining jig 100 is transported to the pressure-maintaining station for continuous pressure maintenance. After the pressure maintenance is completed, it is transferred to the unlocking station and positioned on the positioning frame 310 of the unlocking station. Next, the pressing driving member 321 drives the pressing member 322 to move toward the pressure-maintaining jig 100 until the pressing member 322 presses against the first limit member 135. Then the lifting driving member 332 drives the lifting member 331 to move toward the pressure-maintaining jig 100 until it abuts and pushes the adjusting rod 134 to move, so that the adjusting rod 134 moves to the unlocking position.

[0155] After the adjustment rod 134 moves to the unlocked position, the avoidance groove 1341 on the adjustment rod 134 faces the connecting hole 1391. Under the action of the reset member 132, the movable module 131 tends to move toward the first position, causing the clamping member 133 to roll along the inner wall of the retaining hole 1373 in the third retaining member 137. Under the action of the retaining hole 1373, it enters the avoidance groove 1341 and retracts to the self-locking pin 139. After the clamping member 133 retracts to the self-locking pin 139, the movable module 131 can be moved to the first position under the action of the reset member 132. This allows the first carrier 110 and the second carrier 120 to separate from each other, thus completing the unlocking process.

[0156] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0157] The above-described embodiments merely represent several implementation methods of the present application. While the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that a person of ordinary skill in the art may make various modifications and improvements without departing from the spirit of the present application, and these modifications and improvements fall within the scope of protection of the present application. Therefore, the scope of protection of the present patent application shall be determined by the appended claims.

Claims

1. A pressure-maintaining fixture, characterized in that: include: The first carrier and the second carrier can be controlled to be stacked or separated from each other to compress or release the product; and Self-locking structure, including: A moving module and a restoring member are both disposed on the first carrier, the moving module can reciprocate between a first position and a second position, and the restoring member can provide a force for the moving module to move toward the first position; and The clamping member and the adjusting rod are both arranged on the moving module, and the adjusting rod can move relative to the moving module under the action of external force to adjust the position of the clamping member; When the mobile module is located at the second position: The adjusting rod moves to the locking position, so that the clamping member protrudes from the moving module and is clamped with the second carrier, and the first carrier and the second carrier are locked; or The adjusting rod moves to the unlocking position, so that the clamping member can be retracted to the movable module to release the clamping member from the second carrier. The movable module can move to the first position under the action of the reset member, and the first carrier and the second carrier are separated.

2. The pressure-maintaining fixture according to claim 1, characterized in that: The self-locking structure further includes a first limiting member and a second limiting member, and a first mounting hole is formed through the first carrier along the stacking direction of the first carrier and the second carrier; The movable module is movably arranged in the first mounting hole along the axial direction of the first mounting hole, the first limiting member and the second limiting member are respectively arranged at two ends of the first mounting hole, the reset member is arranged in the first mounting hole, and one end of the reset member abuts against the second limiting member, and the other end abuts against the movable module.

3. The pressure-maintaining jig according to claim 2, characterized in that: The self-locking structure further includes a third limiting member, which is disposed on the second carrier. When the movable module moves from the second position toward the first position, the clamping member protruding from the movable module can contact the third limiting member.

4. The pressure-maintaining fixture according to claim 3, characterized in that: The third limiting member includes an integrally arranged connecting portion and a limiting portion, the connecting portion is connected to the second carrier, the limiting portion has a limiting hole, the inner diameter of the limiting hole gradually decreases along the direction from the second position to the first position, and the clamping member protruding from the movable module can abut against the inner wall of the limiting hole.

5. The pressure-maintaining jig according to claim 2, characterized in that: The moving module comprises a fixedly connected moving block and a self-locking pin, the moving block is arranged in the first mounting hole and can reciprocate along the axial direction of the first mounting hole, and one end of the reset member away from the second limiting member abuts against the moving block; The clamping member is arranged at one end of the self-locking pin away from the moving block, and can protrude from the self-locking pin or retract to the self-locking pin; When the moving module is located at the second position, the end of the self-locking pin away from the moving block can extend into the second carrier stacked with the first carrier.

6. The pressure-maintaining jig according to claim 5, characterized in that: The self-locking pin is provided with a receiving channel and a communicating hole, the communicating hole is communicated with the receiving channel, and the adjusting rod is slidably arranged in the receiving channel; When the adjusting rod moves to the locking position, the adjusting rod squeezes the clamping member through the communicating hole so that the clamping member protrudes from the self-locking pin; When the adjusting rod moves to the unlocking position, the clamping member can be retracted to the self-locking pin through the communicating hole to release the clamping connection with the second carrier.

7. The pressure-maintaining jig according to claim 6, characterized in that: The adjusting rod is provided with an avoidance groove; When the adjusting rod moves to the locking position, the avoiding groove is staggered with the communicating hole; When the adjusting rod moves to the unlocking position, the avoidance groove is opposite to the communicating hole, and the clamping member can enter the avoidance groove through the communicating hole to be retracted to the self-locking pin.

8. The pressure-maintaining jig according to claim 7, characterized in that: An adsorption component capable of adsorbing the clamping component is arranged in the avoidance groove.

9. The pressure-maintaining jig according to claim 1, characterized in that: At least one of the first carrier and the second carrier is provided with a heating module, and the heating module is used to heat the product pressed by the first carrier and the second carrier.

10. The pressure-maintaining jig according to claim 9, characterized in that: The heating module includes a heating rod and a heat-conducting block, and the heat-conducting block is used to transfer the heat of the heating rod to the product.

11. The pressure-maintaining fixture according to any one of claims 1 to 10, characterized in that: The first carrier is provided with a first positioning portion, and the second carrier is provided with a second positioning portion matched with the first positioning portion.

12. The pressure-maintaining fixture according to any one of claims 1 to 10, characterized in that: The pressure-maintaining fixture includes a plurality of the self-locking structures.

13. A locking device, used for the pressure-maintaining fixture according to any one of claims 1 to 12, characterized in that: The locking device comprises: frame; a pressing mechanism, disposed on the frame, for pressing the first carrier and the second carrier which are stacked; and The locking mechanism is arranged on the frame, and the locking mechanism includes a first pressing member and a second pressing member movable relative to the frame, the first pressing member can push the movable module to the second position, and the second pressing member can push the adjusting rod to the locking position.

14. The locking device according to claim 13, characterized in that: The locking mechanism can adjust its position relative to the frame so that the locking mechanism is opposite to the self-locking structure.

15. The locking device according to claim 13, characterized in that: The clamping mechanism includes a clamping drive member, a base plate, an elastic member and a pressure plate. The clamping drive member is transmission-connected to the base plate. One end of the elastic member is connected to a side of the base plate away from the clamping drive member, and the other end is connected to the pressure plate. The side of the pressure plate away from the elastic member can be pressed against the first carrier or the second carrier.

16. The locking device according to claim 15, characterized in that: The clamping mechanism also includes a connecting rod, which extends along the moving direction of the substrate, and one end of the connecting rod is transmission-connected to the clamping drive member, and the other end is connected to the substrate. The substrate can adjust its position relative to the connecting rod along the length direction of the connecting rod.

17. The locking device according to claim 13, characterized in that: The locking mechanism also includes a connecting member, a first pressing drive member and a second pressing drive member, the connecting member is used to connect to the frame, the first pressing drive member is arranged on the connecting member, and is simultaneously transmission-connected with the first pressing member and the second pressing drive member to drive the first pressing member and the second pressing drive member to approach or move away from the pressure-holding jig, and the second pressing drive member is transmission-connected with the second pressing member to drive the second pressing member to approach or move away from the pressure-holding jig.

18. An unlocking device, used for the pressure-maintaining fixture according to any one of claims 1 to 12, characterized in that: The unlocking device comprises: A positioning frame, capable of positioning the first carrier and the second carrier that are stacked; A pressing mechanism, disposed on the positioning frame, for pressing and fixing the first carrier and the second carrier which are stacked and positioned by the positioning frame; and A lifting mechanism is arranged on the positioning frame, and the lifting mechanism includes a movable lifting member, and the lifting member can abut against and push the adjusting rod to push the adjusting rod located at the locking position to the unlocking position.

19. The unlocking device according to claim 18, characterized in that: The pressing mechanism includes a pressing driving member and a pressing member, wherein the pressing driving member is in transmission connection with the pressing member to drive the pressing member to approach or move away from the pressure-maintaining fixture positioned on the positioning frame, and the pressing member is provided with an avoidance hole for the adjusting rod to extend into.

20. A production line, characterized in that: It comprises the pressure-maintaining fixture described in any one of claims 1 to 12, the locking device described in any one of claims 13 to 17, and the unlocking device described in claim 18 or 19.

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