A positioning crimping device for display module

Abstract

The present invention discloses a positioning and crimping device for a display module, comprising a substrate, a buckling plate fixed on the substrate, a seesaw fixed on the substrate; and a floating plate; the buckling plate comprises a push rod; the seesaw comprises a first bridge arm and a second bridge arm; the seesaw is configured to convert the force applied by the push rod to the first bridge arm into a force driving the floating plate to move upward through the second bridge arm; the device also comprises a hook member located on the substrate; the hook member comprises a closed position for fixing the display module on the table top, and an unfolded position for releasing the display module; the floating plate comprises a corresponding part that cooperates with the hook member to drive the hook member to switch between the closed position and the unfolded position. When the present invention implements a crimping and continuity test on the display module, the positioning of the display module relative to the positioning and crimping device and the crimping and continuity testing process are simplified.

Description

Technical Field

[0001] The present invention relates to the technical field of detection devices, and more specifically, to a positioning and crimping device for a display module. Background Art

[0002] As an important component of most electronic devices, display modules need to be tested for lighting before leaving the factory, including parameters such as chromaticity, brightness, flicker, etc. In the prior art, a positioning crimping device is usually used in conjunction with the display module to detect and test the relevant performance of the display module.

[0003] The positioning crimping device usually includes a substrate and a buckling plate with one side hingedly fixed on the substrate; the buckling plate includes an electrical connector that is used to be crimped and connected with the electrical connector on the display module by plugging it in, and the display module is turned on and tested by flipping the buckling plate. In order to facilitate the crimping and conduction between the buckling plate and the display module, the display module placed on the substrate needs to be positioned before testing. Only after the display module is positioned can the display module to be tested be further electrically connected to the test equipment through the buckling plate for relevant performance testing. The current related crimping devices realize the positioning of the display module through a hook member located on the substrate, but the process of positioning the display module using the hook member and the process of crimping and conducting the display module with the buckling plate are performed separately, requiring multiple operating steps and complex processes. The positioning function of the hook member, whether it is achieved by manual fixation or automatic fixation, requires manual or system control operation, and when testing the display module, generally one performance of the display module is tested by crimping and conducting at one time. The cumbersome process steps of positioning and crimping the display module lead to low work efficiency. Summary of the invention

[0004] In view of the above problems, the present invention aims to provide a positioning and crimping device for display modules. The positioning and crimping device simplifies the positioning of the display module relative to the positioning and crimping device and the crimping and continuity testing process when the crimping and continuity test is performed on the display module through structural improvement.

[0005] In order to achieve one of the above purposes, the present invention adopts the following technical solution:

[0006] The present invention provides a positioning and crimping device for a display module, the device comprising:

[0007] A substrate having a table surface for carrying a display module;

[0008] A buckling plate is fixed on the base plate so as to be flippable up and down by hinge connection, and the buckling plate includes a push rod;

[0009] A seesaw fixed on the substrate via a rotating shaft; and

[0010] A floating plate located below the table top and capable of moving up and down in a direction perpendicular to the table top;

[0011] The seesaw includes a first bridge arm corresponding to the end of the push rod away from the buckling plate, and a second bridge arm located below the floating plate and at least partially corresponding to the floating plate;

[0012] The seesaw is configured to convert the force applied by the push rod to the first bridge arm into a force driving the floating plate to move upward through the second bridge arm;

[0013] The device further comprises a hook member located on the base plate; the hook member comprises a closed position for fixing the display module on the table top, and an extended position for releasing the display module;

[0014] The floating plate includes a corresponding part which cooperates with the hook member and is used to drive the hook member to switch between a closed position and an unfolded position.

[0015] In addition, a preferred solution is that when the second bridge arm drives the floating plate to move upward, the hook member is driven by the floating plate to switch from the extended position to the closed position.

[0016] In addition, a preferred solution is that the hook member includes a hook body and a hook body exposed above the table top;

[0017] In the extension direction of the hook body, the inner surface of the hook body includes an arc surface portion and a straight surface portion located above the arc surface portion;

[0018] When the hook member switches between the closed position and the unfolded position, the corresponding portion of the floating plate abuts against the inner surface of the hook body.

[0019] In addition, a preferred solution is that, within the upward movement of the floating plate, the hook member includes a moving section that switches from the unfolded position to the closed position, and a retaining section located at the closed position;

[0020] The movement section is the stroke of the corresponding part abutting and matching with the arc surface of the inner surface of the hook body;

[0021] The retaining section is a stroke in which the corresponding portion abuts and cooperates with the straight surface portion of the inner side surface of the hook body.

[0022] In addition, a preferred solution is that the hook member is fixed to the base plate via a rotating shaft, and the rotating shaft is located at a position of the straight surface portion close to the hook body;

[0023] A reset member is arranged between the hook member and the base plate, and the reset member is located on a side of the hook body below the rotating shaft away from the corresponding part of the floating plate.

[0024] In addition, a preferred solution is that the floating plate includes a body and a first roller located on the body, and the first roller forms the corresponding portion;

[0025] When the hook member switches between the closed position and the unfolded position, the outer edge end surface of the first roller abuts against and fits on the inner side surface of the hook body.

[0026] In addition, a preferred solution is that the second bridge arm includes a second roller;

[0027] When the second bridge arm drives the floating plate to move upward, the outer edge end surface of the second roller abuts against the floating plate;

[0028] The end of the push rod away from the buckling plate includes a third roller; when the push rod acts on the first bridge arm, the outer edge end surface of the third roller abuts and fits on the first bridge arm.

[0029] In addition, a preferred solution is that the buckling plate includes two push rods respectively located at two opposite sides of the buckling plate, and a third roller is arranged between the ends of the two push rods away from the buckling plate; the outer edge end face of the third roller abuts and fits on the first bridge arm.

[0030] In addition, a preferred solution is that the device includes two hook members arranged opposite to each other;

[0031] The two opposite sides of the floating plate respectively include corresponding parts corresponding to the two hook members.

[0032] In addition, a preferred solution is that the device further comprises an elastic member acting between the floating plate and the base plate, and the acting force of the elastic member is directed toward the direction of the floating member away from the table surface.

[0033] The beneficial effects of the present invention are as follows:

[0034] Compared with the prior art, the positioning and crimping device provided by the present invention can realize the positioning of the display module on the substrate only by flipping the buckling plate during the process of flipping the buckling plate toward the substrate. That is to say, before the electrical connector on the buckling plate and the electrical connector of the display module are docked and connected, the flipping movement of the buckling plate can form the positioning of the display module carried by the substrate by the hook member provided on the substrate, which greatly simplifies the cumbersome positioning and crimping process steps when using the positioning and crimping device to detect the display module, and improves the detection efficiency of the display module. In addition, after the detection is completed, when the buckling plate has not reached the fully open state, the hook member on the substrate can still keep the display module clamped and fixed before its travel range from the closed state to the unfolded state, thereby avoiding the accidental detachment of the display module from the substrate after the detection is completed. BRIEF DESCRIPTION OF THE DRAWINGS

[0035] The specific implementation modes of the present invention are further described in detail below in conjunction with the accompanying drawings.

[0036] Figure 1 The schematic structural diagram of the positioning and crimping device provided by the present invention is shown.

[0037] Figure 2 A schematic structural diagram of the positioning and crimping device provided by the present invention is shown when the buckling plate is in an initial state.

[0038] Figure 3 Show Figure 2 The structural front view of the positioning crimping device shown.

[0039] Figure 4 Show Figure 2 A structural side view of the positioning crimping device shown.

[0040] Figure 5 Show Figure 2 A schematic diagram of the cooperation between the hook member in the positioning crimping device structure and the floating plate when the hook member is in the expanded position.

[0041] Figure 6 The figure shows the overall structure of the positioning and crimping device provided by the present invention when the buckling plate is in the flipping stroke.

[0042] Figure 7 Show Figure 6 A structural side view of the positioning crimping device shown.

[0043] Figure 8 Show Figure 6 The schematic diagram of the cooperation between the hook member in the positioning crimping device structure and the floating plate when the hook member is in the closed position.

[0044] Fig. 9 The figure shows the overall structure of the positioning and crimping device provided by the present invention when the buckling plate is completely buckled on the base plate.

[0045] Fig.10 Show Fig. 9 A structural side view of the positioning crimping device shown.

[0046] Fig.11 Show Fig. 9 The schematic diagram of the cooperation between the hook member in the positioning crimping device structure and the floating plate when the hook member is located in the retaining section. DETAILED DESCRIPTION

[0047] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention unless otherwise specifically stated.

[0048] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0049] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0050] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0051] It should be noted that like reference numerals and letters refer to similar items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0052] In order to solve the defects of the prior art, the present invention provides a positioning and crimping device for a display module, Figures 1 to 11 As shown, specifically, the device includes:

[0053] A substrate 1 having a table surface for carrying a display module 100;

[0054] A buckling plate 2 is fixed on the base plate 1 so as to be flippable up and down by being hinged, and the buckling plate 2 includes a push rod 21;

[0055] A seesaw 3 fixed on the substrate 1 via a rotating shaft; and

[0056] A floating plate 4 located below the table and capable of moving up and down in a direction perpendicular to the table; it should be noted that the floating plate 4 described in the present invention being located below the table should be understood as a relative positional relationship between the floating plate 4 and the substrate 1 and the table formed by the top surface of the substrate 1. As a specific implementation, the floating plate 4 can be described as being located below the substrate 1, or when the substrate 1 has a certain thickness, the floating plate 4 can be accommodated in a cavity formed by the substrate 1. The above-mentioned floating plate being located below the table is not intended to limit the floating plate to being located directly below the substrate table.

[0057] Through the action of the buckling plate, electrical conduction can be achieved between the electrical connector of the display panel and the electrical connector on the test equipment. In the actual structure, one of the electrical connectors of the test equipment is arranged on the substrate, and the buckling plate only plays the role of auxiliary crimping. In another case, a connector is arranged on the buckling plate, and the electrical connection is achieved by plugging the connector with the electrical connector of the display module. In this embodiment, a connector 22 is arranged on the buckling plate 2 to achieve crimping conduction with the electrical connector on the face of the display module, and is described in detail as an example. Those skilled in the art will understand that this example is not limiting.

[0058] Further, in the present invention, the seesaw 3 includes a first bridge arm 31 corresponding to the end of the push rod 21 away from the buckling plate 2, and a second bridge arm 32 located below the floating plate 4 and at least partially corresponding to the floating plate 4;

[0059] The seesaw 3 is configured to convert the force applied by the push rod 21 to the first bridge arm 31 into a force driving the floating plate 4 to move upward through the second bridge arm 32;

[0060] The device further comprises a hook member 5 located on the base plate 1; the hook member 5 comprises a closed position for fixing the display module on the table top, and an unfolded position for releasing the display module;

[0061] The floating plate 4 includes a corresponding portion that cooperates with the hook member 5 to drive the hook member 5 to switch between the closed position and the unfolded position.

[0062] The existing crimping device for crimping and connecting the display module usually realizes the positioning and fixing of the display module by a hook piece located on the substrate, but the process of positioning the display module by using the hook piece and the process of crimping and connecting the display module by the buckling plate are performed separately, that is, the display module is first fixed to the substrate supporting table by the hook piece, and then the crimping and connection detection of the display module is realized by flipping and pressing the buckling plate. The disadvantage is that the positioning function of the hook piece, whether it is realized by manual fixation or automatic fixation, requires manual or system control operation, and when the display module is tested, generally one performance of the display module is tested by crimping and connecting at a time. The cumbersome process steps of positioning and crimping the display module lead to low work efficiency.

[0063] The positioning and crimping device provided by the present invention can realize the positioning of the display module on the substrate only by flipping the buckling plate during the process of flipping the buckling plate toward the substrate. That is to say, before the electrical connector on the buckling plate and the electrical connector of the display module are docked and connected, the flipping movement of the buckling plate can form the positioning of the display module carried by the substrate by the hook member provided on the substrate through the flipping movement of the buckling plate, which greatly simplifies the cumbersome positioning and crimping process steps when using the positioning and crimping device to detect the display module, that is, simplifies at least two steps in the prior art into one operation step in which the positioning and fixing of the display module by the hook member and the crimping between the electrical connector on the buckling plate and the electrical connector of the display module can be realized by flipping the buckling plate, thereby improving the detection efficiency of the display module. Furthermore, by utilizing the positioning crimping device provided by the present invention, after the detection is completed, when the buckling plate has not reached a fully open state, the hook member on the substrate can still maintain clamping and fixing the display module before its travel range from a closed state to an unfolded state, thereby avoiding the display module from accidentally falling off the substrate after the detection is completed.

[0064] Regarding the hook structure and its cooperation with the floating plate, in a specific embodiment, the hook 5 includes a hook body 51 and a hook body 52 exposed above the table; the hook body 52 is used to cooperate with the edge of the display module located on the table to achieve positioning and fixation of the display module.

[0065] In the extension direction of the hook body 51, the inner surface of the hook body 51 includes an arc surface portion 511 and a straight surface portion 512 located above the arc surface portion 511;

[0066] When the hook member 5 switches between the closed position and the unfolded position, the corresponding portion of the floating plate 4 abuts against the inner surface of the hook body 51 .

[0067] Combination Figure 4 , Figure 5 , Figure 7 , Figure 8 , Fig.10 as well as Fig.11 As shown together, within the upward movement of the floating plate 4, the hook member 5 includes a moving section that switches from the unfolded position to the closed position, and a retaining section located at the closed position;

[0068] The movement section is the stroke in which the corresponding portion abuts and cooperates with the arc surface portion 511 on the inner surface of the hook body 51;

[0069] The retaining section is a stroke in which the corresponding portion abuts and cooperates with the straight surface portion 512 on the inner side surface of the hook body 51 .

[0070] In the present invention, when the buckling plate 2 is flipped toward the substrate 1 at a certain angle, the cooperation between the floating plate 4 and the hook member 5 can realize the fixation of the display module by the hook body 52 of the hook member 5 in advance. After the buckling plate 2 is completely flipped and buckled on the substrate 1, that is, when the electrical connector on the buckling plate 2 and the electrical connector on the display module are docked and connected, the hook body 52 of the hook member 5 can ensure the stability of the position of the display module, ensure the accuracy of the crimping connection, improve the quality of the crimping test, reduce the crimping damage to the display module, and improve the detection efficiency. It should be noted that when the hook member 5 is in the closed position and the hook body 52 positions and fixes the display module, the corresponding flipping position of the buckling plate 2 can be the middle section of the flipping stroke of the buckling plate 2 from the fully open state to the fully buckled state on the substrate 1. Such a design can fully ensure that before the electrical connector on the buckling plate and the electrical connector of the display module are docked and plugged, the display module has been positioned and fixed on the substrate table by the hook member. The retaining section of the hook member located at the closed position can provide a corresponding basis for utilizing the positioning crimping device provided by the present invention to electrically connect the electrical connector end at the back of the display module.

[0071] Combined with the illustrated structure, in one embodiment, specifically, when the second bridge arm 32 in the present invention drives the floating plate 4 to move upward, the hook member 5 is driven by the floating plate 4 to realize the conversion from the unfolded position to the closed position. Based on the above design, in one embodiment, the hook member 5 in the present invention is fixed to the base plate 1 through a rotating shaft, and the rotating shaft is located at a position close to the hook body 52 of the straight surface portion 512; a reset member 53 is arranged between the hook member 5 and the base plate 1, and the reset member 53 is located on the side of the hook body 51 below the rotating shaft away from the corresponding part of the floating plate 4. When the buckling plate 2 is lifted from the buckled position on the base plate 1 and moves to the open position, the floating plate 4 moves downward, and the reset member can provide a reset effect for the hook body 51 when the floating plate 4 moves downward.

[0072] In a preferred embodiment, in order to reduce the friction between the corresponding part of the floating plate and the hook body and facilitate the hook member to perform associated actions with the up and down floating of the floating plate, the floating plate 4 includes a main body 41 and a first roller 42 located on the main body 41, and the first roller 42 forms the corresponding part; when the hook member 5 is converted between the closed position and the unfolded position, the outer edge end face of the first roller 42 abuts against the inner surface of the hook body 51.

[0073] Similar to the design of the first roller, the second bridge arm 32 includes a second roller 321. When the second bridge arm 32 drives the floating plate 4 to move upward, the outer edge end surface of the second roller 321 abuts against the floating plate 4. Preferably, the outer edge end surface of the second roller 321 abuts against the bottom surface of the floating plate 4 to ensure the stability of the cooperation between the second bridge arm 32 and the floating plate 4.

[0074] Furthermore, the end of the push rod 21 away from the buckling plate 2 includes a third roller 211; when the push rod 21 acts on the first bridge arm 31, the outer edge end surface of the third roller 211 abuts against the first bridge arm 31. The second roller 321 can reduce the friction between the second bridge arm 32 and the floating plate 4, and the third roller 211 can reduce the friction between the push rod 21 and the first bridge arm 31. Through the configuration of the first roller, the second roller and the third roller, and the linkage between the push rod, the seesaw, the floating plate and the hook, the downward stroke of the buckling part and the cooperation of the floating plate with the hook in its movement direction are smoother, and can also be precisely controlled by automated equipment.

[0075] In order to ensure the stability of the force exerted by the push rod on the first bridge arm, preferably, the buckling plate 2 includes two push rods 21 respectively located on the two opposite sides of the buckling plate 2, and a third roller 211 is arranged between the ends of the two push rods 21 away from the buckling plate 2; the outer edge end face of the third roller 211 abuts and fits on the first bridge arm 31.

[0076] Generally, the positioning and fixing between the display module and the substrate requires fixing the display module from two opposite sides to prevent the non-fixed side of the display module from tilting when the display module is fixed on one side. In a preferred embodiment, the device includes two hooks 5 arranged opposite to each other; the two opposite sides of the floating plate 4 respectively include corresponding parts corresponding to the two hooks 5. That is, the two hooks 5 can be moved simultaneously by the up and down movement of the floating plate 4. The two hooks 5 can be arranged at two opposite edges of the tabletop to position and fix the display module carried by the tabletop from both sides, so as to ensure the stability and reliability of the positioning between the display module and the substrate.

[0077] In one embodiment, the device further comprises an elastic member (not shown) acting between the floating plate 4 and the base plate 1, and the force direction of the elastic member is toward the direction of the floating member away from the table surface. The elastic member can provide a reset force for the floating plate 4. When the buckling plate 2 is flipped upward, the floating plate 4 moves downward under the action of the elastic member, and then drives the hook member 5 to switch from the closed position to the unfolded position through cooperation with the hook member 5, thereby releasing the positioning and fixing of the display module.

[0078] In other embodiments, the elastic member that provides the floating plate with reset capability may also be arranged at other positions in other forms. For example, the elastic member may be arranged as a tension spring or a torsion spring arranged between the second bridge arm and the substrate. The force of the tension spring or the torsion spring acting on the seesaw should be arranged in a direction opposite to the direction in which the push rod acts on the first bridge arm of the seesaw. No further details will be given.

[0079] Another function of the elastic member that provides reset capability for the floating plate configuration is that it can make the structures of the various components of the positioning and crimping device provided by the present invention compact and stable, and the various components are in relative contact with each other without relative separation, thereby avoiding relative shaking between the various components of the positioning and crimping device during actual working applications, which would affect the accuracy of the device's coordination.

[0080] In combination with the illustrated structure, the positioning crimping device provided by the present invention includes a guide member 6 for guiding the floating plate to move up and down in the direction perpendicular to the table surface; the guide member 6 can ensure the accuracy of the floating plate's up and down movement without shaking, offset or deflection.

[0081] In a specific embodiment, the guide member 6 comprises:

[0082] A guide shaft 61 fixed on the substrate 1 and arranged in a direction perpendicular to the table surface; and

[0083] Combined with the shaft sleeve 62 fixed on the floating plate 4;

[0084] The shaft sleeve 62 is sleeved on the guide shaft 61 , and there is a clearance fit between the shaft sleeve 62 and the guide shaft 61 .

[0085] In combination with the illustrated structure, in one embodiment, the positioning and crimping device provided by the present invention further includes a stopper 7 located on the top surface of the substrate and surrounding the table, and the stopper 7 encloses a limited area for positioning the display module 100 carried on the table. Alternatively, the top surface of the substrate is recessed inward to form a groove, and the bottom surface of the groove constitutes the table carrying the display module, and the side wall of the groove is used to position the display module on the table.

[0086] Combined with Figure 4 , Figure 7 , Fig.10 As shown, the working principle of the present invention in actual operation is as follows:

[0087] 1. First, place the display module 100 to be tested on the table of the substrate 1, and use the stopper 7 on the substrate 1 to position and fix the display module 100 and the substrate 1 in the horizontal direction.

[0088] 2. Flip the pressing plate 2 toward the substrate 1. During the flipping process, the pressing plate 2 first presses down the first bridge arm 31 of the rocker 3 through the push rod 21, and the second bridge arm 32 of the rocker 3 is lifted upward to drive the floating plate 4 to move upward.

[0089] 3. When the floating plate 4 moves upward, the corresponding part of the floating plate 4 abuts against the inner surface of the hook body 51. The corresponding part first cooperates with the arc surface 511 on the inner surface of the hook body 51, and the hook member 5 is transformed from the unfolded position to the closed position to form the movement section of the hook member. As the buckling plate 2 continues to flip downward, the corresponding part passes through the arc surface 511 and reaches the junction of the arc surface 511 and the straight surface 512 on the inner surface of the hook body 51, and the hook member 5 realizes the positioning and fixing of the display module 100.

[0090] 4. Subsequently, as the buckling plate 2 continues to flip and press downward, the corresponding portion of the floating plate 4 always corresponds to the straight surface portion 512 on the inner surface of the hook body 51, that is, the corresponding portion moves relative to the hook member 5 within the retaining section of the hook member 5. At this time, the continuous flipping and pressing downward of the buckling plate 2 does not affect the positioning and fixation of the display module 100 by the hook member 5.

[0091] 5. When the electrical connector on the buckling plate 2 is connected to the electrical connector of the display module 100, the hook member 5 always keeps the display module positioned and fixed, which simplifies the positioning of the display module relative to the crimping device and the testing process of crimping and connection, and also ensures the accuracy of crimping and connection.

[0092] In addition, when the display module is tested using the device provided by the present invention, after the test is completed, when the buckling plate 2 has not reached the fully open state, the hook member 5 on the substrate 1 can still maintain the clamping and fixing of the display module before it travels from the closed state to the unfolded state, thereby avoiding the display module from accidentally falling off the substrate after the test is completed.

[0093] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the protection scope of the present invention.

Claims

1. A positioning and crimping device for a display module, characterized in that: The device comprises: A substrate having a table surface for carrying a display module; A buckling plate is fixed on the base plate so as to be flippable up and down by hinge connection, and the buckling plate includes a push rod; A seesaw fixed on the substrate via a rotating shaft; and A floating plate located below the table top and capable of moving up and down in a direction perpendicular to the table top; The seesaw includes a first bridge arm corresponding to the end of the push rod away from the buckling plate, and a second bridge arm located below the floating plate and at least partially corresponding to the floating plate; The seesaw is configured to convert the force applied by the push rod to the first bridge arm into a force driving the floating plate to move upward through the second bridge arm; The device further comprises a hook member located on the base plate; the hook member comprises a closed position for fixing the display module on the table top, and an extended position for releasing the display module; The floating plate includes a corresponding part which cooperates with the hook member and is used to drive the hook member to switch between a closed position and an unfolded position.

2. The positioning crimping device according to claim 1, characterized in that: When the second bridge arm drives the floating plate to move upward, the hook member is driven by the floating plate to switch from the extended position to the closed position.

3. The positioning crimping device according to claim 1, characterized in that: The hook member comprises a hook body and a hook body exposed above the table top; In the extension direction of the hook body, the inner surface of the hook body includes an arc surface portion and a straight surface portion located above the arc surface portion; When the hook member switches between the closed position and the unfolded position, the corresponding portion of the floating plate abuts against the inner surface of the hook body.

4. The positioning crimping device according to claim 3, characterized in that: In the upward movement of the floating plate, the hook member includes a moving section that switches from an extended position to a closed position, and a retaining section located at the closed position; The movement section is the stroke of the corresponding part abutting and matching with the arc surface of the inner surface of the hook body; The retaining section is a stroke in which the corresponding portion abuts and cooperates with the straight surface portion of the inner side surface of the hook body.

5. The positioning crimping device according to claim 3, characterized in that: The hook member is fixed on the base plate via a rotating shaft, and the rotating shaft is located at a position of the straight surface portion close to the hook body; A reset member is arranged between the hook member and the base plate, and the reset member is located on a side of the hook body below the rotating shaft away from the corresponding part of the floating plate.

6. The positioning crimping device according to claim 3, characterized in that: The floating plate comprises a body and a first roller located on the body, wherein the first roller forms the corresponding portion; When the hook member switches between the closed position and the unfolded position, the outer edge end surface of the first roller abuts against and fits on the inner side surface of the hook body.

7. The positioning crimping device according to claim 1, characterized in that: The second bridge arm includes a second roller; When the second bridge arm drives the floating plate to move upward, the outer edge end surface of the second roller abuts against the floating plate; The end of the push rod away from the buckling plate includes a third roller; when the push rod acts on the first bridge arm, the outer edge end surface of the third roller abuts and fits on the first bridge arm.

8. The positioning crimping device according to claim 1, characterized in that: The buckling plate includes two push rods respectively located at two opposite sides of the buckling plate, and a third roller is arranged between the ends of the two push rods away from the buckling plate; the outer edge end surface of the third roller abuts and fits on the first bridge arm.

9. The positioning crimping device according to claim 1, characterized in that: The device comprises two hook members which are arranged opposite to each other; The two opposite sides of the floating plate respectively include corresponding parts corresponding to the two hook members.

10. The positioning crimping device according to claim 1, characterized in that: The device further comprises an elastic member acting between the floating plate and the base plate, wherein the acting force of the elastic member is directed toward the direction of the floating member away from the table surface.

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