Binding device

Abstract

The utility model provides a binding device. The binding device comprises: a mounting base comprising a main body frame; the moving seat is movably arranged on the main body frame in the vertical direction, two first sliding grooves are formed in the moving seat in the first direction, at least one first sliding block is arranged in each first sliding groove in a sliding mode, and at least one first binding needle is arranged at the bottom of each first sliding block; the two screw rods and the two first sliding grooves are arranged in a one-to-one correspondence mode, the two screw rods extend in the first direction, and the first sliding blocks located in the same first sliding groove are sequentially arranged on the correspondingly arranged screw rods in a sleeving mode in the first direction and are in threaded fit with the correspondingly arranged screw rods; the two ends of each screw are rotationally connected with the inner walls of the two ends of the corresponding first sliding groove. According to the technical scheme, the problems that an existing binding device is difficult to adapt to archives of different specifications, and the applicability of the device is low can be solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of file binding, and concretely relates to a binding device. BACKGROUND

[0002] The file is the history record formed directly, inherits the originality and record of the file, and is the original document that reproduces the real appearance of history. The essential attribute of the file is the history reproduction, and other characteristics such as the knowledge, information, politics, culture, society, education and value are general attributes, the file is not only used for recording history and inheriting civilization, but also has the voucher and reference function. The original record formed in various social activities of individuals or organizations, such as text, image and sound, can become the file. The file is an important part of the development of human society, and has important effects on history research, cultural inheritance and knowledge dissemination.

[0003] After searching, it is found that the Chinese patent with the authorized announcement number (CN216683811U) discloses an archive binding device, which comprises a base, a lifting mechanism is fixed on the top of the base, a rotating handle is rotatably connected to the right side wall of the lifting mechanism, a motor is fixed on the top of the lifting mechanism, a plurality of rotating shafts are linearly and equidistantly rotatably connected in the groove on the top of the lifting mechanism, a gear is fixed on the circumferential outer wall of the rotating shaft, a clamping mechanism is fixed on the bottom of the rotating shaft, a cleaning roller is fixed on the bottom of the clamping mechanism, a drill bit is fixed on the bottom of the cleaning roller, an operation table is fixed on the front of the base, an installation plate is fixed in the groove on the top of the operation table, two threaded rods are fixed on the top of the installation plate in a left-right symmetrical structure, an adjusting handle is threadedly connected to the outer surface of the threaded rod, the above-mentioned device drives a plurality of gears to rotate through the motor, so that a plurality of drill bits work simultaneously to drill holes in the file, and the drilling efficiency is improved, but the above-mentioned device cannot adjust the distance between the drill bits, it is difficult to adapt to different specifications of the file, and the applicability of the device is low. UTILITY MODEL CONTENT

[0004] The main purpose of the utility model is to provide a binding device, which can solve the problem that the existing binding device is difficult to be applied to different specifications of the file and has low applicability.

[0005] In order to achieve the above object, the utility model provides a kind of binding device, comprising: mounting seat, including main body frame;Mobile seat is movably arranged in main body frame along vertical direction, along first direction, the inside of mobile seat is provided with two first sliding slots, at least one first sliding block is slidably arranged in each first sliding slot, and the bottom of each first sliding block is provided with at least one first binding needle;Two screw rods, two screw rods are correspondingly arranged with two first sliding slots, two screw rods extend along first direction, first sliding block in the same first sliding slot is sequentially sleeved on the screw rod of corresponding arrangement along first direction, and is threadedly engaged with the screw rod of corresponding arrangement, along first direction, the both ends of each screw rod are rotatably connected with the both end inner wall of corresponding first sliding slot, to drive first sliding block on the screw rod of corresponding arrangement moves along first direction.

[0006] Further, the binding device further includes telescopic limiting structure, along first direction, the both sides of first binding needle are provided with at least one telescopic limiting structure, the distance between the bottom of telescopic end of telescopic limiting structure and the top surface of the article to be bound is H1, the distance between the bottom of first binding needle and the top surface of the article to be bound is H2, in initial state, H1

[0007] Further, telescopic limiting structure includes fixed rod, moving rod and first elastic member, fixed rod has accommodating cavity, at least part of first elastic member is located in accommodating cavity, one end of first elastic member is connected with the inner wall of accommodating cavity, the other end of first elastic member is connected with the end of moving rod close to mobile seat, and moving rod and the inner wall of accommodating cavity are slidably connected.

[0008] Further, the bottom of mobile seat is provided with at least one second binding needle, along first direction, the both sides of each second binding needle are provided with at least one telescopic limiting structure.

[0009] Further, along first direction, the opposite sides of main body frame are provided with avoiding slot extending along vertical direction, the end of two screw rods away from each other is worn out from the avoiding slot of its side, and the length of avoiding slot is greater than or equal to the maximum moving stroke of screw rod in vertical direction.

[0010] Further, the binding device further includes two limiting assemblies, and the mounting seat further includes a placing table, the two limiting assemblies are spaced apart along the first direction and arranged on the placing table, the limiting assembly includes a first limiting portion and a second limiting portion, the first limiting portion is fixedly installed on the placing table, and the second limiting portion is movably arranged on the side of the first limiting portion close to the center of the placing table along the vertical direction.

[0011] Further, the second limiting portion includes a fixed plate, a movable limiting plate and a second elastic member, the fixed plate is fixedly connected with the first limiting portion, one end of the second elastic member is connected with the fixed plate, and the other end of the second elastic member is connected with the movable limiting plate.

[0012] Further, the second sliding block is arranged on one side of the moving limiting plate facing the first limiting part, and the second sliding groove is arranged on one side of the first limiting part facing the moving limiting plate, and the second sliding groove extends along the vertical direction.

[0013] Further, the first limiting part is movably arranged on the placing table along the first direction.

[0014] Further, the binding device further comprises a driving structure mounted on the main frame, and a driving end of the driving structure is drivingly connected with the moving seat to drive the moving seat to move along the vertical direction.

[0015] According to the technical scheme of the utility model, the fixed seat, the moving seat and the two screw rods are arranged, the two first sliding grooves are arranged in the moving seat, the two screw rods and the two first sliding grooves are arranged one by one, the two ends of the two screw rods are rotatably connected with the inner walls of the first sliding grooves arranged correspondingly, at least one first sliding block is arranged in each first sliding groove, all the first sliding blocks in the same first sliding groove are sleeved on the screw rod and are in threaded cooperation with the screw rod, when the screw rod is rotated, the first sliding block moves along the first direction relative to the screw rod and drives the first binding needle arranged on it to move along the first direction. As known from the above, the interval between the first sliding block in one first sliding groove and the first sliding block in the other first sliding groove can be adjusted by rotating the screw rod, the interval between the first binding needles on the first sliding blocks in different first sliding grooves can be adjusted, the binding device can be applicable to different specifications of archives, and the applicability of the device can be improved. BRIEF DESCRIPTION OF DRAWINGS

[0016] The drawings constituting a part of the utility model illustrate the utility model further, the illustrative embodiment and the explanation of the utility model are used for explaining the utility model, and do not constitute the improper limitation of the utility model. In the drawings:

[0017] Figure 1 The structure schematic view of the binding device of the embodiment of the utility model is shown;

[0018] Figure 2 The enlarged view of A in the above-mentioned Figure 1 is shown;

[0019] Figure 3 The partial structure schematic view of the binding device of the embodiment of the utility model (wherein, the telescopic limiting structure is perspective) is shown;

[0020] Figure 4 The enlarged view of B in the above-mentioned Figure 3 is shown.

[0021] Wherein, the above-mentioned drawings include the following reference signs:

[0022] 1. main body frame; 2. moving seat; 3. first sliding block; 4. first sliding slot; 5. screw rod; 6. first binding needle; 7. driving structure; 8. third sliding slot; 9. avoiding slot; 10. fixed rod; 11. moving rod; 12. fifth sliding slot; 13. first elastic member; 14. placing table; 15. first limiting part; 16. fixed plate; 17. second elastic member; 18. moving limiting plate; 19. second sliding slot; 20. fourth sliding slot; 21. second binding needle; 22. second limiting part; 23. telescopic limiting structure. DETAILED DESCRIPTION

[0023] It should be noted that the embodiments in the utility model and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with embodiments.

[0024] In combination with the drawings, Figures 1 to 4 The utility model provides a binding device, the binding device includes: the mounting seat, including main body frame 1, moving seat 2, along vertical direction movably arranged in main body frame 1, along first direction, the inside of moving seat 2 is equipped with two first sliding slot 4, at least one first sliding block 3 is arranged in each first sliding slot 4 and slides, and the bottom of each first sliding block 3 is provided with at least one first binding needle 6, two screw rods 5, two screw rods 5 and two first sliding slot 4 one-to-one correspond setting, two screw rods 5 extend along first direction, the first sliding block 3 in the same first sliding slot 4 is sequentially set on the corresponding screw rod 5 along first direction and is screwed with the corresponding screw rod 5, along first direction, the both ends of each screw rod 5 are respectively connected with the both end inner wall of the corresponding first sliding slot 4 rotationally to drive the first sliding block 3 on the corresponding screw rod 5 moves along first direction.

[0025] In the embodiment, the first direction refers to the length direction of the moving base 2. The interior of the moving base 2 is provided with two first sliding grooves 4, two screw rods 5 are correspondingly arranged in the two first sliding grooves 4, the two ends of the two screw rods 5 are rotationally connected with the inner walls of the first sliding grooves 4 correspondingly arranged, the screw rod 5 can only rotate in the circumferential direction relative to the inner wall of the first sliding groove 4 and does not move in the axial direction of the screw rod 5, at least one first sliding block 3 is arranged in each first sliding groove 4, all the first sliding blocks 3 located in the same first sliding groove 4 are sleeved on the screw rod 5 and are in threaded cooperation with the screw rod 5, when the screw rod 5 is rotated, the first sliding block 3 moves relative to the screw rod 5 in the first direction and drives the first binding needle 6 arranged thereon to move in the first direction, when the number of the first sliding blocks 3 in the same first sliding groove 4 is two or more, when the screw rod 5 is rotated, all the first sliding blocks 3 sleeved on the same screw rod 5 move synchronously in the first direction, and the spacing between the adjacent two first sliding blocks 3 does not change. As known from the above, by rotating the screw rod 5, the spacing between the first sliding block 3 in one of the first sliding grooves 4 and the first sliding block 3 in the other first sliding groove 4 can be adjusted, the spacing between the first binding needles 6 on the first sliding blocks 3 located in different first sliding grooves 4 can be adjusted, and the binding device can be applicable to different specifications of archives, thereby improving the applicability of the device.

[0026] In one embodiment, the two ends of the two screw rods 5 are arranged in the inner walls of the first sliding grooves 4 correspondingly arranged, the two first sliding grooves 4 are provided with limiting rods, the end of the limiting rod close to the other end of the screw rod 5 is connected with the inner wall of the first sliding groove 4, the other end of the limiting rod is clamped into the annular groove and is in sliding cooperation with the annular groove, that is, the limiting rod does not interfere with the rotation of the screw rod 5 in the rotation process of the screw rod 5, and the limiting rod can limit the screw rod 5 in the axial direction of the screw rod 5.

[0027] In combination with FIG. 1, Figures 1 to 4 In one embodiment of the utility model, the binding device further comprises a telescopic limiting structure 23, at least one telescopic limiting structure 23 is arranged on the two sides of the first binding needle 6 in the first direction, the distance between the bottom of the telescopic end of the telescopic limiting structure 23 and the top surface of the to-be-bound member is H1, the distance between the bottom of the first binding needle 6 and the top surface of the to-be-bound member is H2, and in the initial state, H1 < H2.

[0028] In the embodiment, the telescopic limiting structure 23 is installed at the bottom of the first sliding block 3, when the file needs to be bound, the moving seat 2 is moved relative to the main frame 1 to the side where the file is located, the moving seat 2 drives the screw rod 5 and the first sliding block 3 to move synchronously to the direction close to the file, the telescopic ends of the telescopic limiting structure 23 on both sides of the first binding needle 6 are first in contact with and pressed against the top surface of the file, then the first binding needle 6 is in contact with the file and performs the punching operation, the telescopic limiting structure 23 can fix the front and back sides of the position where the file is bound and punched, so that the file can be kept stable when the first binding needle 6 punches the file, thereby ensuring the punching precision and effect of the binding device.

[0029] With reference to Figures 1 to 4 In an embodiment of the utility model, the telescopic limiting structure 23 includes a fixed rod 10, a moving rod 11 and a first elastic member 13, the fixed rod 10 has a containing cavity, at least part of the first elastic member 13 is located in the containing cavity, one end of the first elastic member 13 is connected with the inner wall of the containing cavity, the other end of the first elastic member 13 is connected with the end of the moving rod 11 close to the moving seat 2, and the moving rod 11 is in sliding fit with the inner wall of the containing cavity.

[0030] In the embodiment, when the file needs to be bound, the moving seat 2 is moved relative to the main frame 1 to the side where the file is located, the moving seat 2 drives the screw rod 5 and the first sliding block 3 to move synchronously to the direction close to the file, in the process of moving to the position where the file is located, the bottom of the moving rod 11 first contacts the top surface of the file, with the moving seat 2 continuing to move close to the position where the file is located, the moving rod 11 slides to the direction close to the moving seat 2 relative to the containing cavity under the abutting action of the top surface of the file, at this time, the first elastic member 13 is compressed, under the elastic restoring force of the first elastic member 13, the moving rod 11 can press and fix the file, then the first binding needle 6 is in contact with the file and performs the punching operation. Through the above setting, the front and back sides of the position where the file is bound and punched can be fixed, so that the file can be kept stable when the first binding needle 6 punches the file, thereby ensuring the punching precision and effect of the binding device.

[0031] In an embodiment, the first elastic member 13 is a spring.

[0032] With reference to Figures 1 to 4 In an embodiment of the utility model, the bottom of the moving seat 2 is provided with at least one second binding needle 21, and at least one telescopic limiting structure 23 is arranged on both sides of each second binding needle 21 along the first direction.

[0033] In the embodiment, the second binding needle 21 is fixedly installed at the bottom of the moving seat 2, by rotating the two screw rods 5, the first sliding block 3 provided on the screw rod 5 is moved in the first direction in the first sliding groove 4, the first binding needle 6 and the telescopic limiting structure 23 provided on the first sliding block 3 are moved towards or away from the second binding needle 21, until the first binding needle 6 is moved to the appropriate position and keeps the appropriate distance with the second binding needle 21, then stop rotating the screw rod 5, the spacing between the first binding needle 6 and the second binding needle 21 is adjusted, so that the binding device can not only punch different specifications of archives, but also reduce the manual adjustment time of the operator in the punching process, reduce the labor intensity of the operator, and improve the binding efficiency. And through the above setting, not only the punching precision of the binding device during punching can be improved, but also the punching spacing can be made uniform by rotating the screw rod 5, so that it is helpful to keep the archives stable during long-term storage and reduce the wear or tearing caused by improper binding punching.

[0034] For reference Figures 1 to 4 As shown in the embodiment of the utility model, along the first direction, the opposite sides of the main frame 1 are provided with the avoiding grooves 9 extending in the vertical direction, the ends of the two screw rods 5 far away from each other are out of the avoiding grooves 9 on the side, and the length of the avoiding groove 9 is greater than or equal to the maximum moving stroke of the screw rod 5 in the vertical direction.

[0035] In the embodiment, the ends of the two screw rods 5 far away from each other are out of the avoiding grooves 9 on the side, which is convenient for rotating the screw rod 5. The length of the avoiding groove 9 is greater than or equal to the maximum moving stroke of the screw rod 5 in the vertical direction, so that the interference between the end of the screw rod 5 and the main frame 1 during the moving of the moving seat 2 and the screw rod 5 in the vertical direction can be avoided.

[0036] For reference Figures 1 to 4 As shown in the embodiment of the utility model, the binding device further comprises two limiting assemblies, the mounting seat further comprises the placing table 14, the two limiting assemblies are spaced apart and arranged on the placing table 14 along the first direction, the limiting assembly comprises the first limiting part 15 and the second limiting part 22, the first limiting part 15 is fixedly installed on the placing table 14, and the second limiting part 22 is movably arranged on the side of the first limiting part 15 close to the center of the placing table 14 in the vertical direction.

[0037] In the embodiment, when the archives need to be bound, the second limiting part 22 is moved along the vertical direction until the distance between the second limiting part 22 and the upper surface of the placing table 14 is greater than the thickness of the archives, the archives are placed on the placing table 14, the two ends of the archives are respectively below the second limiting part 22 on the side in the first direction, then the second limiting part 22 is moved along the vertical direction to the direction close to the archives until the second limiting part 22 is pressed on the archives, through the above setting, the two ends of the archives can be limited and fixed in the first direction, and the subsequent binding operation is facilitated.

[0038] With reference to Figures 1 to 4 In the embodiment, the second limiting part 22 comprises a fixed plate 16, a movable limiting plate 18 and a second elastic piece 17, the fixed plate 16 is fixedly connected with the first limiting part 15, one end of the second elastic piece 17 is connected with the fixed plate 16, and the other end of the second elastic piece 17 is connected with the movable limiting plate 18.

[0039] In the embodiment, when the archives need to be bound, the movable limiting plate 18 is manually lifted, then the distance between the movable limiting plate 18 and the upper surface of the placing table 14 is greater than the thickness of the archives, the archives are placed on the placing table 14, the two ends of the archives are respectively below the movable limiting plate 18 on the side in the first direction, then the movable limiting plate 18 is released, at this time, the movable limiting plate 18 is moved to the direction close to the archives under the action of the gravity of the movable limiting plate 18 until the movable limiting plate 18 is in contact with the upper surface of the archives and the archives are pressed. Through the above setting, the two ends of the archives can be limited and fixed in the first direction, and the subsequent binding operation is facilitated.

[0040] In one embodiment, the second elastic piece 17 is a spring.

[0041] With reference to Figures 1 to 4 In the embodiment, for the same limiting assembly, the movable limiting plate 18 is provided with a second sliding block on the side facing the first limiting part 15, the first limiting part 15 is provided with a second sliding groove 19 on the side facing the movable limiting plate 18, the second sliding groove 19 extends along the vertical direction, and the second sliding block is slidingly arranged in the second sliding groove 19.

[0042] Through the above setting, the movable limiting plate 18 can be guided during the movement of the movable limiting plate 18 along the vertical direction, and the stability of the movable limiting plate 18 during the movement is ensured.

[0043] With reference to Figures 1 to 4 In the embodiment, the first limiting part 15 is movably arranged on the placing table 14 in the first direction.

[0044] In the embodiment, the first limiting part 15 is movably arranged on the placing table 14 along the first direction, so that a user can adjust the position of the first limiting part 15 according to the width of the file, and through the above arrangement, the fixing and limiting of files of different specifications can be realized, and the applicability of the binding device is improved.

[0045] With reference to Figures 1 to 4 As shown in the drawings, in one embodiment of the utility model, along the first direction, the opposite sides of the main frame 1 are further provided with third sliding grooves 8, the third sliding grooves 8 are communicated with the avoiding grooves 9 on the sides, the third sliding grooves 8 are located on the side of the avoiding grooves 9 close to the moving base 2, the opposite ends of the moving base 2 are provided with third sliding blocks, the third sliding blocks are correspondingly arranged with the third sliding grooves 8 on the sides, and the third sliding blocks are slidably arranged in the third sliding grooves 8, so that the moving base 2 can be guided when moving along the vertical direction, and the stability of the moving base 2 during movement is ensured.

[0046] With reference to Figures 1 to 4 As shown in the drawings, in one embodiment of the utility model, the placing table 14 is provided with a plurality of fourth sliding grooves 20 arranged at intervals along the second direction at the positions of the two first limiting parts 15, the bottoms of the two first limiting parts 15 are provided with a plurality of fourth sliding blocks, and the plurality of fourth sliding grooves 20 and the plurality of fourth sliding blocks on the same side of the placing table 14 are one-to-one correspondingly arranged, and the fourth sliding blocks are slidably arranged in the fourth sliding grooves 20, so that the first limiting part 15 can be guided and limited when moving along the first direction, and the stability of the first limiting part 15 during movement is ensured.

[0047] With reference to ​ As shown in the drawings, in one embodiment of the utility model, the binding device further comprises a driving structure 7, the driving structure 7 is installed on the main frame 1, and the driving end of the driving structure 7 is drivingly connected with the moving base 2 to drive the moving base 2 to move along the vertical direction.

[0048] Through the above arrangement, the moving base 2 can move along the vertical direction.

[0049] In one embodiment, the driving structure 7 is an electric push rod.

[0050] In one embodiment, a fifth sliding groove 12 is arranged on the inner wall of the accommodating cavity, a fifth sliding block is arranged on the outer wall of the moving rod 11, the fifth sliding block is correspondingly arranged with the fifth sliding groove 12, and the fifth sliding block and the fifth sliding groove 12 are in sliding cooperation, so that the moving rod 11 can be guided when moving along the vertical direction, and the stability of the moving rod 11 during movement is ensured.

[0051] From the above description, it can be seen that the above-mentioned embodiments of the utility model realize the following technical effects: the fixed seat, the moving seat and the two screw rods are arranged, the moving seat is internally provided with two first sliding grooves, the two screw rods and the two first sliding grooves are one-to-one correspondingly arranged, the two ends of the two screw rods are rotationally connected with the inner walls of the first sliding grooves correspondingly arranged, at least one first sliding block is arranged in each first sliding groove, all the first sliding blocks in the same first sliding groove are sleeved on the screw rod and are all in threaded cooperation with the screw rod, when the screw rod is rotated, the first sliding block moves along the first direction relative to the screw rod and drives the first binding needle arranged thereon to move along the first direction. As can be seen from the above, by rotating the screw rod, the interval between the first sliding block in one first sliding groove and the first sliding block in another first sliding groove can be adjusted, the interval between the first binding needles on the first sliding blocks in different first sliding grooves is adjusted, the binding device can be suitable for archives of different specifications, and thus the applicability of the device can be improved.

[0052] Obviously, the above-described embodiments are only a part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor should belong to the protection scope of the utility model.

[0053] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form unless the context clearly indicates otherwise, and furthermore, it should be understood that when the terms "comprise" and / or "include" are used in the specification, there is a feature, step, work, device, component and / or their combination.

[0054] The above only describes the preferred embodiments of the utility model, and is not intended to limit the utility model, and those skilled in the art can make various changes and changes to the utility model. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A binding apparatus characterized by, The utility model relates to a bookbinding device, including: a mounting seat comprising a main frame (1); a moving seat (2) movably arranged in the vertical direction on the main frame (1), two first sliding grooves (4) are arranged in the moving seat (2) along a first direction, at least one first sliding block (3) is slidably arranged in each first sliding groove (4), and at least one first binding needle (6) is arranged at the bottom of each first sliding block (3); two screw rods (5) are arranged in one-to-one correspondence with the two first sliding grooves (4), the two screw rods (5) extend along the first direction, the first sliding block (3) arranged in the same first sliding groove (4) is sequentially sleeved on the corresponding screw rod (5) along the first direction and threadedly cooperates with the corresponding screw rod (5), and the two ends of each screw rod (5) are rotatably connected with the inner walls of the two ends of the corresponding first sliding groove (4) along the first direction to drive the first sliding block (3) arranged on the screw rod (5) to move along the first direction.

2. The binding apparatus according to claim 1, wherein The bookbinding device further comprises a telescopic limiting structure (23), and the two sides of the first binding needle (6) are provided with at least one telescopic limiting structure (23) along the first direction, the distance between the bottom of the telescopic end of the telescopic limiting structure (23) and the top surface of the to-be-bound part is H1, the distance between the bottom of the first binding needle (6) and the top surface of the to-be-bound part is H2, and in the initial state, H1 < H2.

3. The binding apparatus of claim 2, wherein, The telescopic limiting structure (23) comprises a fixed rod (10), a moving rod (11) and a first elastic member (13), the fixed rod (10) has an accommodating cavity, at least part of the first elastic member (13) is located in the accommodating cavity, one end of the first elastic member (13) is connected with the inner wall of the accommodating cavity, the other end of the first elastic member (13) is connected with the end of the moving rod (11) close to the moving seat (2), and the moving rod (11) and the inner wall of the accommodating cavity are in sliding cooperation.

4. The binding apparatus according to claim 2 or 3, characterized in that, The bottom of the moving seat (2) is provided with at least one second binding needle (21), and the two sides of each second binding needle (21) are provided with at least one telescopic limiting structure (23) along the first direction.

5. The binding apparatus according to any one of claims 1 to 3, characterized in that, Along the first direction, the opposite sides of the main frame (1) are provided with avoiding grooves (9) extending along the vertical direction, one end of each screw rod (5) away from each other penetrates out of the avoiding groove (9) on the side, and the length of the avoiding groove (9) is greater than or equal to the maximum moving stroke of the screw rod (5) in the vertical direction.

6. The binding apparatus according to any one of claims 1 to 3, characterized in that, The binding device further comprises two limiting assemblies, the mounting seat further comprises a placement table (14), the two limiting assemblies are arranged at intervals along the first direction on the placement table (14), the limiting assembly comprises a first limiting part (15) and a second limiting part (22), the first limiting part (15) is fixedly installed on the placement table (14), and the second limiting part (22) is movably arranged on the first limiting part (15) on a side close to the center of the placement table (14) along the vertical direction.

7. The binding apparatus of claim 6, wherein The second limiting part (22) comprises a fixed plate (16), a movable limiting plate (18) and a second elastic element (17), the fixed plate (16) is fixedly connected with the first limiting part (15), one end of the second elastic element (17) is connected with the fixed plate (16), and the other end of the second elastic element (17) is connected with the movable limiting plate (18).

8. The binding apparatus of claim 7, wherein, For the same limiting assembly, a second sliding block is arranged on a side of the movable limiting plate (18) facing the first limiting part (15), a second sliding groove (19) is arranged on a side of the first limiting part (15) facing the movable limiting plate (18), the second sliding groove (19) extends along the vertical direction, and the second sliding block is slidingly arranged in the second sliding groove (19).

9. The binding apparatus of claim 6, wherein, The first limiting part (15) is movably arranged on the placement table (14) along the first direction.

10. The binding apparatus according to any one of claims 1 to 3, characterized in that, The binding device further comprises a driving structure, the driving structure is installed on the main body frame (1), and a driving end of the driving structure is drivingly connected with the moving seat (2) to drive the moving seat (2) to move along the vertical direction.

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