An assembly device for a hinge

Abstract

The embodiment of the present application discloses a kind of assembly devices of hinge, including carousel and the arm body feeding station, pre-pressing station, press lamination station, cup head feeding station, U-shaped nail station, unlocking station and sorting station along the rotation direction of carousel, respectively setting arm body assembly feeding mechanism for being transported and placed on assembly carrier arm body assembly, pre-pressing mechanism for being pressed torsional spring of arm body assembly to preset position, press lamination mechanism for being pressed the lamination of arm body assembly to preset position, cup head feeding mechanism for being transported and placed on assembly carrier cup head, U-shaped nail mechanism for being articulated cup head and arm body assembly by U-shaped nail, unlocking mechanism for opening assembly carrier, sorting mechanism for hinge outfeed.The present application is sequentially arranged on carousel by assembly mechanism, not only can effectively improve production efficiency, also greatly reduce manpower, reduce product production cost, can effectively improve hinge quality, can effectively improve product consistency, improve industry competitive strength.

Description

Technical Field

[0001] The present invention relates to the technical field of hinge assembly, and in particular to an assembly device for a hinge. Background Art

[0002] A hinge is a mechanical device used to connect two relatively independent solid bodies, allowing them to rotate relative to each other. Hinges are very commonly used as connectors for furniture doors, utilizing the principle of a living hinge to allow the door to open and close around an axis. A hinge is primarily assembled from a cup head, rocker arm, arm body, triangular piece, laminated plates, base, U-shaped staples, damping tube, torsion spring, plastic round tube, and several connecting staples and screws. Hydraulic hinges utilize high-density oil flowing through the damping tube to achieve a cushioning effect, ensuring a gentle closing even when the door is slammed hard. During overall hinge assembly, the connections between the various components must be aligned, ensuring that the matching connection holes and screw holes in the arm body, base, inner rail assembly, and rocker arm are aligned. The components are then assembled together using rivets. With the exception of the pivoting cup head, the arm body is already assembled with the other components, collectively known as the arm body assembly.

[0003] A hinge with a 90-degree opening angle holds the two door panels parallel at 180 degrees when closed. This hinge can be used in cabinets with two consecutive doors connected in parallel, or with a fixed door panel at one end. It is also widely used for connecting corner cabinet doors. Due to its unique structure, this hinge is currently assembled manually, resulting in low yield and efficiency. Therefore, a suitable assembly device for this hinge is needed. Summary of the Invention

[0004] The technical problem to be solved by the embodiments of the present invention is to provide an assembly device for a hinge.

[0005] In order to solve the above technical problems, an embodiment of the present invention provides an assembly device for a hinge, wherein the hinge includes an arm body component and a cup head, and comprises a turntable and an arm body loading station, a pre-pressing station, a sheet pressing station, a cup head loading station, a U-shaped nail station, an unlocking station and a sorting station arranged along the rotation direction of the turntable. The turntable is provided with a plurality of assembly vehicles that can accommodate the hinge, the arm body loading station is provided with an arm body component loading mechanism for transporting the arm body component and placing it on the assembly vehicle, and the pre-pressing station is provided with an arm body component loading mechanism for The arm body assembly is provided with a pre-pressing mechanism for pressing the torsion spring of the arm body assembly to a preset position, the stacking station is provided with a stacking mechanism for pressing the stacking sheets of the arm body assembly to a preset position, the cup head loading station is provided with a cup head loading mechanism for transporting the cup head and placing it on the assembly vehicle, the U-shaped nail station is provided with a U-shaped nail mechanism for hingedly connecting the cup head and the arm body assembly through U-shaped nails, the unlocking station is provided with an unlocking mechanism for opening the assembly vehicle, and the sorting station is provided with a sorting mechanism for discharging the hinge.

[0006] Furthermore, the arm body assembly loading mechanism includes a transplanting clamp, a first sliding block, an inverted "U"-shaped first slide groove and a first top block arranged on one side of the assembly vehicle at the arm body loading station. The transplanting clamp clamps the arm body assembly and transports it to be placed on the assembly vehicle. The transplanting clamp is fixedly connected to the first sliding block, and the first sliding block is reciprocatingly slidable in the first slide groove. The transplanting clamp includes two pairs of clamps that can move close to or away from each other, and the opposite end faces of the clamps have stepped surfaces for clamping the arm body assembly. The first top block pushes the arm body limiting block of the assembly vehicle, and the arm body limiting block limits and fixes the arm body assembly on the assembly vehicle.

[0007] Furthermore, the prestressing mechanism includes a torsion spring selector bar which can be raised and lowered above one side of the assembly tool at the prestressing station, a torsion spring selector block which can be telescopically slidably arranged on the other side of the assembly tool, and a second top block. The torsion spring selector bar extends into the gap between the hinge laminate and the torsion spring, and pries the end of the torsion spring to expose it from the assembly tool. The torsion spring selector block extends into the arm body assembly to continue to move the end of the torsion spring to a preset position. The second top block pushes the torsion spring limit block of the assembly tool, and the torsion spring limit block limits the torsion spring to a preset position.

[0008] Furthermore, the lamination mechanism has a lamination shifting block which is retractably arranged on one side of the assembly tool of the lamination station, and the lamination shifting block extends into the arm body assembly to shift the lamination to a preset position.

[0009] Furthermore, the cup head loading mechanism includes a cup head vibration plate, a cup head slide, a cup head waiting carrier, a loading clamp, a second sliding block and an inverted "U"-shaped second chute arranged on one side of the assembly vehicle of the cup head loading station. The cup head vibration plate is connected to the input end of the cup head slide, the output end of the cup head slide is connected to the waiting carrier, the loading clamp is fixedly connected to the second sliding block, the second sliding block is reciprocatingly slidable in the second chute, and the loading clamp clamps the cup head on the waiting carrier and transports it to be placed on the assembly vehicle.

[0010] Furthermore, the U-shaped nail mechanism includes a U-shaped nail vibration plate, a U-shaped nail slide, a U-shaped nail carrier and a first nail feeding component arranged on one side of the assembly vehicle of the U-shaped nail station, the U-shaped nail vibration plate is connected to the input end of the U-shaped nail slide, the output end of the U-shaped nail slide is connected to the U-shaped nail carrier, the first nail feeding component is telescopically slidably arranged on the U-shaped nail carrier, the U-shaped nail enters the U-shaped nail carrier from the U-shaped nail vibration plate through the U-shaped nail slide, the first nail feeding component pushes the U-shaped nail in the U-shaped nail carrier onto the assembly vehicle and hinges the cup head and the arm body assembly.

[0011] Furthermore, the U-shaped nail carrier has a second nail feeding member that is retractably slidable, and the second nail feeding member has a U-shaped groove that is adapted to the shape of the U-shaped nail. The U-shaped nail enters the U-shaped groove of the second nail feeding member through the U-shaped nail slide, and the second nail feeding member pushes the U-shaped nail into the first nail feeding member.

[0012] Furthermore, the U-shaped nail mechanism also includes a guide pin and a torsion spring pressure block that are telescopically slidably arranged on the other side of the assembly vehicle and a number of cup head limit blocks that are liftable and arranged above the assembly vehicle. The guide pin is used to guide the U-shaped nail through the cup head, the torsion spring pressure block descends to press the torsion spring, and the cup head limit block descends to fix the position of the cup head.

[0013] Furthermore, the unlocking mechanism includes a first fixed block and a second fixed block which are movably arranged above the assembly vehicle at the unlocking station, and a first unlocking block and a second unlocking block which are flexibly arranged on both sides of the assembly vehicle. The first fixed block and the second fixed block descend to press the arm body assembly and the cup head respectively, and the first unlocking block and the second unlocking block respectively push the arm body limit block and the torsion spring limit block to unlock the hinge.

[0014] Furthermore, the sorting mechanism includes a finished product discharging clamp, a third sliding block, an inverted "U"-shaped third slide, a defective product discharging clamp, a guide rail and a discharging chute arranged on one side of the assembly vehicle of the sorting station. The structures of the finished product discharging clamp and the defective product discharging clamp are the same as those of the transplanting clamp. The finished product discharging clamp is fixedly connected to the third sliding block, and the third sliding block is reciprocatingly slid in the third slide. The finished product discharging clamp clamps the hinge on the assembly vehicle and transports it to the next process. The discharging chute is arranged on one side of the defective product discharging clamp, and the defective product discharging clamp slides on the guide rail. After the defective product discharging clamp clamps the hinge on the assembly vehicle, it moves to the top of the discharging chute, releases the hinge and discharges the material through the discharging chute.

[0015] The implementation of the embodiments of the present invention has the following beneficial effects:

[0016] First, adjust the 90° hinge's laminated plates and torsion springs to the preset positions. Then, load the cup head and U-shaped staples separately and hinge them. Open the limit blocks on the assembly vehicle, and use the sorting mechanism to sort out finished and defective products.

[0017] By sequentially arranging the arm body assembly loading mechanism, pre-pressing mechanism, stacking mechanism, cup head loading mechanism, U-shaped nail mechanism, unlocking mechanism and sorting mechanism on the turntable, not only can the production efficiency be effectively improved, but also the manpower can be greatly reduced and the product production cost can be reduced; while increasing the production capacity, it can effectively improve the hinge quality, effectively improve product consistency and enhance the industry competitiveness. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

[0019] Figure 2 Schematic diagram of a workstation according to an embodiment of the present invention;

[0020] Figure 3 Schematic diagram of the mechanism of an embodiment of the present invention;

[0021] Figure 4 2 is a schematic diagram of the structure of a turntable according to an embodiment of the present invention;

[0022] Figure 5 is a schematic structural diagram of an assembled vehicle according to an embodiment of the present invention;

[0023] Figure 6 1 is a schematic structural diagram of a hinge and an assembled vehicle according to an embodiment of the present invention;

[0024] Figure 7 1 is a schematic diagram of a hinge structure according to an embodiment of the present invention;

[0025] Figure 8This is a schematic diagram of the arm assembly feeding mechanism of an embodiment of the present invention Figure 1 ;

[0026] Figure 9 This is a schematic diagram of the arm assembly feeding mechanism of an embodiment of the present invention Figure 2 ;

[0027] Figure 10 is a schematic diagram of a pre-pressing mechanism according to an embodiment of the present invention;

[0028] Figure 11 2 is a schematic diagram of a sheet lamination mechanism according to an embodiment of the present invention;

[0029] Figure 12 This is a schematic diagram of the cup head loading mechanism of an embodiment of the present invention. Figure 1 ;

[0030] Figure 13 This is a schematic diagram of the cup head loading mechanism of an embodiment of the present invention. Figure 2 ;

[0031] Figure 14 This is a schematic diagram of the U-shaped nail mechanism of an embodiment of the present invention. Figure 1 ;

[0032] Figure 15 This is a schematic diagram of the U-shaped nail mechanism of an embodiment of the present invention. Figure 2 ;

[0033] Figure 16 This is a schematic diagram of the U-shaped nail mechanism of an embodiment of the present invention. Figure 3 ;

[0034] Figure 17 is a schematic diagram of an unlocking mechanism according to an embodiment of the present invention;

[0035] Figure 18 This is a schematic diagram of the sorting mechanism of an embodiment of the present invention. Figure 1 ;

[0036] Figure 19 This is a schematic diagram of the sorting mechanism of an embodiment of the present invention. Figure 2 ;

[0037] In the picture:

[0038] A. Arm loading station, B. Pre-pressing station, C. Laminating station, D. Cup head loading station, E. U-shaped nail station, F. Unlocking station, G. Sorting station, 1. Turntable, 11. Assembly loading device, 111. Arm body limit block, 112. Torsion spring limit block, 2. Arm body assembly loading mechanism, 21. Transplanting clamp, 211. Clamp, 2111. Step surface, 22. First sliding block, 23. First slide, 24. First top block, 3. Pre-pressing mechanism, 31. Torsion spring strip, 32. Torsion spring block, 33. Second top block, 4. Laminating mechanism, 41. Laminating block, 5. Cup head loading mechanism, 51. Cup head vibration plate, 52. Cup head slide, 53. Cup head waiting carrier, 54. Loading clamp, 55. Second slide Moving block, 56, second slide, 6, U-shaped nail mechanism, 61, U-shaped nail vibration plate, 62, U-shaped nail slide, 63, U-shaped nail carrier, 64, first nail feeding member, 65, second nail feeding member, 651, U-shaped groove, 66, guide pin, 67, torsion spring pressure block, 68, cup head limit block, 7, unlocking mechanism, 71, first fixed block, 72, second fixed block, 73, first unlocking block, 74, second unlocking block, 75, cup head shift block, 8, sorting mechanism, 81, finished product discharge clamp, 82, third sliding block, 83, third slide, 84, defective product discharge clamp, 85, guide rail, 86, discharge slide, 9, hinge, 91, arm body assembly, 911, laminated disc, 912, torsion spring, 92, cup head, 93, U-shaped nail. DETAILED DESCRIPTION

[0039] In order to make the objectives, technical solutions and advantages of the present invention more clear, the present invention will be described in further detail below with reference to the accompanying drawings.

[0040] like Figure 1-7As shown, a hinge assembly device, the hinge 9 includes an arm body component 91 and a cup head 92, including a turntable 1 and an arm body loading station A, a pre-pressing station B, a sheet pressing station C, a cup head loading station D, a U-shaped nail station E, an unlocking station F and a sorting station G arranged along the rotation direction of the turntable 1. Each station sequentially completes the assembly work of the arm body component 91 and the cup head 92. The turntable 1 is provided with several assembly containers 11 that can accommodate the hinge 9. The hinge 9 is placed on the assembly container 11 with its bottom facing upward. The arm body loading station A is provided with an arm body component loading mechanism 2 for transporting the arm body component and placing it on the assembly container 11. The pre-pressing station B is provided with a pre-pressing mechanism 3 for pressing the torsion spring 912 of the arm body component 91 to a preset position. The lamination station C is provided with a lamination mechanism 4 for pressing the laminations 911 of the arm body component 91 to a preset position. The cup head loading station D is provided with a cup head loading mechanism 5 for transporting the cup head 92 and placing it on the assembly container 11. The U-shaped nail station E is provided with a U-shaped nail mechanism 6 for hingedly connecting the cup head 92 and the arm body component 91 through a U-shaped nail 93. The unlocking station F is provided with an unlocking mechanism 7 for opening the assembly container 11. The sorting station G is provided with a sorting mechanism 8 for discharging the hinge 9.

[0041] like Figure 8 and 9 As shown, the arm body assembly loading mechanism 2 includes a transplanting clamp 21, a first sliding block 22, an inverted "U"-shaped first slide groove 23 and a first top block 24 arranged on one side of the assembly vehicle 11 of the arm body loading station A. The transplanting clamp 21 clamps the arm body assembly 91 and transports it to be placed on the assembly vehicle 11. The transplanting clamp 21 is fixedly connected to the first sliding block 22, and the first sliding block 22 is reciprocatingly slidable in the first slide groove 23. The transplanting clamp 21 includes two pairs of clamps 211 that can move close to or away from each other. The opposite end faces of the clamps 211 have stepped surfaces 2111 for clamping the arm body assembly 91. Preferably, the transplanting clamp 21 also clamps the front and rear ends of the arm body assembly 91, and the transplanting clamp 21 can clamp the arm body assembly 91 with the assembled base. Then, the first push block 24 pushes the arm body limiting block 111 of the assembly vehicle 11 , and the arm body limiting block 111 limits and fixes the arm body assembly 91 on the assembly vehicle 11 .

[0042] like Figure 10As shown, the prestressing mechanism 3 includes a torsion spring selector bar 31 which can be raised and lowered and is arranged above one side of the assembled tool 11 of the prestressing station B, a torsion spring selector block 32 which can be telescopically slidably arranged on the other side of the assembled tool 11 of the prestressing station B, and a second top block 33. The torsion spring selector bar 31 extends into the gap between the laminate 911 and the torsion spring 912 of the hinge 9, and pries the end of the torsion spring 912 to expose it from the assembled tool 11. The torsion spring selector block 32 extends into the arm body assembly 91 to continue to select the end of the torsion spring 912 to a preset position. The second top block 33 pushes the torsion spring limit block 112 of the assembled tool 11, and the torsion spring limit block 112 limits the torsion spring 912 to a preset position.

[0043] like Figure 11 As shown, the lamination mechanism 4 has a lamination shifting block 41 which is retractably arranged on one side of the assembly tool 11 of the lamination station C. The lamination shifting block 41 extends into the arm body assembly 91 to shift the lamination 911 to a preset position, preparing for loading the cup head 92 of the next station.

[0044] like Figure 12 and 13 As shown, the cup head loading mechanism 5 includes a cup head vibration plate 51, a cup head slide 52, a cup head waiting carrier 53, a loading clamp 54, a second sliding block 55, and an inverted "U"-shaped second chute 56, which are arranged on one side of the assembly tool 11 of the cup head loading station D. The cup head vibration plate 51 is connected to the input end of the cup head slide 52, and the output end of the cup head slide 52 is connected to the waiting carrier. The loading clamp 54 is fixedly connected to the second sliding block 55, and the second sliding block 55 is reciprocatingly slidable in the second chute 56. The loading clamp 54 clamps the cup head 92 on the waiting carrier and transports it to be placed on the assembly tool 11 of the cup head loading station D. Preferably, a sensor can also be provided on one side of the assembly tool 11 to detect the state of the torsion spring.

[0045] like Figure 14-16As shown, the U-shaped nail mechanism 6 includes a U-shaped nail vibration plate 61, a U-shaped nail slide 62, a U-shaped nail carrier 63 and a first nail feeding component 64 arranged on one side of the assembly vehicle 11 of the U-shaped nail station E. The U-shaped nail vibration plate 61 is connected to the input end of the U-shaped nail slide 62, and the output end of the U-shaped nail slide 62 is connected to the U-shaped nail carrier 63. The first nail feeding component 64 is telescopically slidably arranged on the U-shaped nail carrier 63. The U-shaped nail 93 enters the U-shaped nail carrier 63 from the U-shaped nail vibration plate 61 through the U-shaped nail slide 62. The first nail feeding component 64 pushes the U-shaped nail 93 in the U-shaped nail carrier 63 to the assembly vehicle 11 and articulates the cup head 92 and the arm body assembly 91. The U-shaped nail carrier 63 has a second nail feeding member 65 that is slidably arranged to extend and retract. The second nail feeding member 65 has a U-shaped groove 651 that matches the shape of the U-shaped nail. The U-shaped nail 93 enters the U-shaped groove 651 of the second nail feeding member 65 through the U-shaped nail slide 62, and the second nail feeding member 65 pushes the U-shaped nail 93 into the first nail feeding member 64. The U-shaped nail mechanism 6 also includes a guide pin 66 and a torsion spring pressure block 67 that are slidably arranged on the other side of the assembly vehicle 11, and a plurality of cup head limit blocks 68 that are slidably arranged above the assembly vehicle 11. The guide pin 66 is used to guide the U-shaped nail 93 through the cup head 92. The torsion spring pressure block 67 descends to press the torsion spring 912, and the cup head limit block 68 descends to fix the position of the cup head 92.

[0046] like Figure 17 As shown, the unlocking mechanism 7 includes a first fixing block 71 and a second fixing block 72 that can be raised and lowered above the assembly vehicle 11 at the unlocking station F, and a first unlocking block 73 and a second unlocking block 74 that can be retracted and arranged on both sides of the assembly vehicle 11. The first fixing block 71 and the second fixing block 72 descend to press the arm body assembly 91 and the cup head 92 respectively. The first unlocking block 73 and the second unlocking block 74 respectively push the arm body limit block 111 and the torsion spring limit block 112 to unlock the hinge 9. Preferably, a cup head shifting block 75 can also be provided on one side of the assembly vehicle 11 to shift the cup head 92 to a preset position.

[0047] like Figure 18 and 19As shown, the sorting mechanism 8 includes a finished product discharging clamp 81, a third sliding block 82, an inverted "U"-shaped third slide 83, a defective product discharging clamp 84, a guide rail 85 and a discharging chute 86, which are arranged on one side of the assembled vehicle 11 of the sorting station G. The structures of the finished product discharging clamp 81 and the defective product discharging clamp 84 are the same as those of the transplanting clamp 21. The finished product discharging clamp 81 is fixedly connected to the third sliding block 82, and the third sliding block 82 is reciprocatingly slid in the third slide 83. The finished product discharging clamp 81 clamps the hinge 9 on the assembled vehicle 11 and transports it to the next process. The discharging chute 86 is arranged on one side of the defective product discharging clamp 84, and the defective product discharging clamp 84 is slidably arranged on the guide rail 85. The defective product discharging clamp 84 clamps the hinge 9 on the assembled vehicle 11 and moves to the top of the discharging chute 86, releases the hinge 9 and discharges the product through the discharging chute 86. First, adjust the 90° hinge laminate 911 and torsion spring 912 to the preset position, then load the cup head 92 and U-shaped nail 93 separately and hinge them, open the limit block on the assembly vehicle 11, and finally use the sorting mechanism 8 to pick out the finished products and defective products respectively.

[0048] The above embodiments are intended only to illustrate the technical concepts and features of the present invention. Their purpose is to enable those skilled in the art to understand the present invention and implement it accordingly. They are not intended to limit the scope of protection of the present invention. Any modifications made within the spirit of the main technical solution of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A hinge assembly device, wherein the hinge (9) comprises an arm assembly (91) and a cup head (92), characterized in that: The invention comprises a turntable (1) and an arm body loading station (A), a pre-pressing station (B), a sheet stacking station (C), a cup head loading station (D), a U-shaped nail station (E), an unlocking station (F) and a sorting station (G) arranged along the rotation direction of the turntable (1); the turntable (1) is provided with a plurality of assembly vehicles (11) capable of accommodating the hinge (9); the arm body loading station (A) is provided with an arm body component loading mechanism (2) for transporting the arm body component and placing it on the assembly vehicle (11); the pre-pressing station (B) is provided with a pre-pressing mechanism (3) for pressing the torsion spring (912) of the arm body component (91) to a preset position; the stacking station (E) is provided with a plurality of assembly vehicles (11) capable of accommodating the hinge (9); the arm body loading station (A) is provided with an arm body component loading mechanism (2) for transporting the arm body component and placing it on the assembly vehicle (11); the pre-pressing station (B) is provided with a pre-pressing mechanism (3) for pressing the torsion spring (912) of the arm body component (91) to a preset position; The lamination station (C) is provided with a lamination pressing mechanism (4) for pressing the laminations (911) of the arm body component (91) to a preset position, the cup head loading station (D) is provided with a cup head loading mechanism (5) for transporting the cup head (92) and placing it on the assembly vehicle (11), the U-shaped nail station (E) is provided with a U-shaped nail mechanism (6) for hinge-connecting the cup head (92) and the arm body component (91) through a U-shaped nail (93), the unlocking station (F) is provided with an unlocking mechanism (7) for opening the assembly vehicle (11), and the sorting station (G) is provided with a sorting mechanism (8) for discharging the hinge (9); The U-shaped nail mechanism (6) comprises a U-shaped nail carrier (63) and a first nail delivery member (64), wherein the first nail delivery member (64) pushes the U-shaped nail (93) in the U-shaped nail carrier (63) onto the assembly carrier (11) and articulates the cup head (92) and the arm body assembly (91).

2. The hinge assembly device according to claim 1, characterized in that: The arm body component loading mechanism (2) comprises a transplanting clamp (21), a first sliding block (22), an inverted "U"-shaped first slide groove (23) and a first top block (24) arranged on one side of the assembly vehicle (11) of the arm body loading station (A); the transplanting clamp (21) clamps the arm body component (91) and transports it to be placed on the assembly vehicle (11); the transplanting clamp (21) is fixedly connected to the first sliding block (22), and the first sliding block (22) reciprocates. The transplanting clamp (21) is slidably arranged in the first sliding groove (23), and includes two pairs of clamping blocks (211) that can move closer to or farther from each other. The opposite end faces of the clamping blocks (211) each have a stepped surface (2111) for clamping the arm body component (91). The first top block (24) pushes the arm body limiting block (111) of the assembly vehicle (11), and the arm body limiting block (111) limits and fixes the arm body component (91) on the assembly vehicle (11).

3. The hinge assembly device according to claim 2, characterized in that: The prestressing mechanism (3) comprises a torsion spring strip (31) which is liftably arranged above one side of the assembly tool (11) at the prestressing station (B), a torsion spring strip block (32) which is telescopically slidably arranged on the other side of the assembly tool (11), and a second top block (33); the torsion spring strip (31) extends into a gap between the laminate (911) and the torsion spring (912) of the hinge (9), and pries the end of the torsion spring (912) to expose the assembly tool (11); the torsion spring strip block (32) extends into the arm body assembly (91) to continue to slide the end of the torsion spring (912) to a preset position; the second top block (33) pushes the torsion spring limit block (112) of the assembly tool (11); and the torsion spring limit block (112) limits the torsion spring (912) to the preset position.

4. The hinge assembly device according to claim 1, characterized in that: The lamination mechanism (4) comprises a lamination shifting block (41) which is retractably arranged on one side of the assembly tool (11) of the lamination station (C); the lamination shifting block (41) extends into the arm assembly (91) to shift the lamination (911) to a preset position.

5. The hinge assembly device according to claim 1, characterized in that: The cup head loading mechanism (5) comprises a cup head vibration plate (51), a cup head slide (52), a cup head waiting carrier (53), a loading clamp (54), a second sliding block (55) and an inverted "U"-shaped second chute (56) arranged on one side of the assembly loading device (11) of the cup head loading station (D), the cup head vibration plate (51) is connected to the input end of the cup head slide (52), the output end of the cup head slide (52) is connected to the waiting carrier, the loading clamp (54) is fixedly connected to the second sliding block (55), the second sliding block (55) is reciprocatingly slidable in the second chute (56), and the loading clamp (54) clamps the cup head (92) on the waiting carrier and transports it to be placed on the assembly loading device (11).

6. The hinge assembly device according to claim 1, characterized in that: The U-shaped nail mechanism (6) comprises a U-shaped nail vibrating plate (61) and a U-shaped nail slide (62) arranged on one side of the assembly vehicle (11) of the U-shaped nail station (E), the U-shaped nail vibrating plate (61) is connected to the input end of the U-shaped nail slide (62), the output end of the U-shaped nail slide (62) is connected to the U-shaped nail carrier (63), the first nail feeding member (64) is telescopically slidably arranged on the U-shaped nail carrier (63), and the U-shaped nail (93) enters the U-shaped nail carrier (63) from the U-shaped nail vibrating plate (61) through the U-shaped nail slide (62).

7. The hinge assembly device according to claim 6, characterized in that: The U-shaped nail carrier (63) has a second nail feeding member (65) that is telescopically slidable. The second nail feeding member (65) has a U-shaped groove (651) that is adapted to the shape of the U-shaped nail. The U-shaped nail (93) enters the U-shaped groove (651) of the second nail feeding member (65) from the U-shaped nail slide (62). The second nail feeding member (65) pushes the U-shaped nail (93) into the first nail feeding member (64).

8. The hinge assembly device according to claim 7, characterized in that: The U-shaped nail mechanism (6) further comprises a guide pin (66) and a torsion spring pressure block (67) which are telescopically slidably arranged on the other side of the assembly vehicle (11) and a plurality of cup head limiting blocks (68) which are liftably arranged above the assembly vehicle (11). The guide pin (66) is used to guide the U-shaped nail (93) to pass through the cup head (92), the torsion spring pressure block (67) descends to press the torsion spring (912), and the cup head limiting block (68) descends to fix the position of the cup head (92).

9. The hinge assembly device according to claim 3, characterized in that: The unlocking mechanism (7) comprises a first fixed block (71) and a second fixed block (72) which are liftably arranged above the assembly vehicle (11) at the unlocking station (F), and a first unlocking block (73) and a second unlocking block (74) which are retractably arranged on both sides of the assembly vehicle (11). The first fixed block (71) and the second fixed block (72) are lowered to press the arm body assembly (91) and the cup head (92) respectively. The first unlocking block (73) and the second unlocking block (74) respectively push the arm body limiting block (111) and the torsion spring limiting block (112) to unlock the hinge (9).

10. The hinge assembly device according to claim 2, characterized in that: The sorting mechanism (8) comprises a finished product discharging clamp (81) provided on one side of the assembly vehicle (11) of the sorting station (G), a third sliding block (82), an inverted "U"-shaped third chute (83), a defective product discharging clamp (84), a guide rail (85) and a discharging chute (86). The structures of the finished product discharging clamp (81) and the defective product discharging clamp (84) are the same as those of the transplanting clamp (21). The finished product discharging clamp (81) is fixedly connected to the third sliding block (82), and the third sliding block (82) slides back and forth. The finished product discharging clamp (81) is arranged in the third chute (83), clamps the hinge (9) on the assembly vehicle (11) and transports it to the next process, and the discharging chute (86) is arranged on one side of the defective product discharging clamp (84), and the defective product discharging clamp (84) is slidably arranged on the guide rail (85). The defective product discharging clamp (84) clamps the hinge (9) on the assembly vehicle (11) and moves to the top of the discharging chute (86), releases the hinge (9) and discharges the product through the discharging chute (86).

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