A jaw spring assembly tool and assembly method for a steel strip winding roll

Abstract

This invention discloses a jaw spring assembly fixture and assembly method for a steel strip take-up roller. A movable seat is used to be movably installed in a second sinker along a first direction. Multiple pull claws are included, with the first end of each pull claw mounted on the movable seat so that each pull claw can move synchronously with the movable seat in the first direction. The second end of each pull claw is used to penetrate along the second sinker and the first sinker into the receiving groove. The first end of each pull claw is movably connected to the movable seat. The fixture employs a radially opening and closing pull claw structure. In its normal state, the claw head is retracted, with an outer diameter smaller than the inner hole of the spring, allowing it to easily penetrate the central hole of the spring in the deep groove. When expanded, the claw head protrudes radially, firmly hooking onto the spring end face. The entire fixture applies force from inside the spring, eliminating the need for external pressure heads. It is perfectly suited to the enclosed and narrow sinker space inside a fan-shaped plate, solving the problem of traditional external fixtures being unable to penetrate deeply into the working area.

Description

Technical Field

[0001] This invention relates to the field of assembly technology for metallurgical steel strip winding equipment, and in particular to a clamping spring assembly tool and assembly method for a steel strip winding roller. Background Technology

[0002] Steel strip take-up rolls, also known as expansion and contraction rolls, are the core equipment of hot-rolled and cold-rolled strip steel production lines. They consist of multiple sector plates arranged along the circumference. Each sector plate can open and close radially relative to the other, allowing the take-up roll to switch between expansion and contraction states, thereby realizing the strip steel winding and coil unwinding operations.

[0003] One of the sector plates is equipped with a movable clamp, and multiple sets of reset jaw springs are assembled between the clamp and the sector plate: when the take-up roll expands, the internal pyramidal structure pushes the clamp to overcome the spring force and close, clamping the head of the strip to achieve winding; when the take-up roll contracts, the jaw springs release the spring force to push the clamp to reset and open, releasing the constraint on the strip to complete unwinding.

[0004] In actual assembly, the jaw spring is installed in a deep groove inside the sector plate. The spring has high stiffness and strong rebound force, and its length in its free state far exceeds the depth of the groove. The spring must be fully pressed into the groove until its end face is flush with the groove opening before the movable clamp can be installed. The current traditional assembly method has defects: the spring groove is located inside the sector plate, in a small and enclosed space. Conventional pressing tools such as external pressure plates and pressure heads cannot reach deep into the groove for operation. Manual pressing is extremely labor-intensive, and the spring can easily pop out at high speed, posing a serious safety risk of injury. Summary of the Invention

[0005] The purpose of this invention is to provide a clamping spring assembly fixture and assembly method for a steel strip take-up roller, so as to solve the above-mentioned shortcomings in the prior art, realize the controllable synchronous pressing of a large elastic spring in a narrow and deep groove, and after the assembly is completed, the fixture can be retracted and removed without interference, thereby reducing the assembly difficulty and safety risks, and improving the assembly accuracy and efficiency.

[0006] It should be noted that: one of the sector plates is the first sector plate, which is equipped with a movable clamp. The first sector plate has a first jaw extending axially, and the clamp has a second jaw extending axially. The clamp is movably connected to the first sector plate along a first direction, so that the second jaw and the first jaw can switch between an aligned state and a misaligned state. The first direction is the relative movement direction between the sector plate and one of the adjacent sector plates when the steel strip winding roller switches between an expanding state and a contracting state. This adjacent sector plate is the second sector plate.

[0007] A pull rod is provided between the first sector plate and the second sector plate, the pull rod is fixedly connected to the clamp, and the pull rod abuts against the end face of the second sector plate along the first direction.

[0008] When the strip take-up roller switches from the reduced diameter state to the expanded diameter state, each sector plate expands outward radially. The second sector plate moves relative to the first sector plate in the first direction, and the push rod moves synchronously. The pull rod drives the clamp to slide in the first direction, so that the second jaw and the first jaw switch from the aligned state to the misaligned state. The jaw biting gap is reduced, the strip head is clamped, and the strip take-up operation is completed as the drum rotates.

[0009] Multiple sets of jaw springs (reset springs) are provided between the clamp and the first sector plate. The first sector plate is provided with a receiving groove for assembling the clamp along a second direction. The second direction is perpendicular to the first direction and the axis of the steel strip take-up roller. The receiving groove has a first recessed groove on the side wall near the second sector plate for receiving the jaw spring. The second sector plate has a second recessed groove coaxial with the first recessed groove. When the take-up roller is in operation, the second recessed groove is used to receive the end of the pull rod.

[0010] When the steel strip take-up roller switches from the expanded diameter state to the contracted diameter state, the second sector plate retracts relative to the first sector plate along the first direction, the pushing force on the pull rod disappears, the jaw spring releases its elastic potential energy, and drives the clamp to slide and reset in the opposite direction along the first direction, so that the second jaw and the first jaw switch from the misaligned state to the aligned state, the jaw opens and releases the constraint on the head of the strip, so as to complete the uncoiling operation of the steel coil.

[0011] To achieve the above objectives, the present invention adopts the following technical solution: a jaw spring assembly fixture and assembly method for a steel strip take-up roller, wherein the steel strip take-up roller includes a first sector plate and a second sector plate that open and close to each other along a first direction, the first sector plate is provided with a receiving groove for clamps to be assembled onto the first sector plate along a second direction, the second direction is perpendicular to the first direction and perpendicular to the axis of the steel strip take-up roller, the groove wall near the second sector plate of the receiving groove is provided with a first recess for receiving the jaw spring, and the second sector plate is provided with a second recess coaxial with the first recess; characterized in that the jaw spring assembly fixture includes: a movable seat for movably mounting in the second recess along the first direction; and a plurality of pull claws, the first end of each pull claw being mounted on the movable seat so that each pull claw can move synchronously with the movable seat in the first direction. The second end of each of the pull claws is used to penetrate into the receiving groove along the second sinker and the first sinker. The first end of each of the pull claws is movably connected to the movable seat so that the second end of each of the pull claws can open and close relative to each other along the radial direction of the first sinker. The second end of each of the pull claws is provided with a claw head that bends away from the center of the first sinker along the radial direction of the first sinker so that when the second ends of each of the pull claws move away from each other, each claw head can abut against the end of the jaw spring pre-placed in the first sinker away from the second sector plate along the first direction. A fixed seat is used to abut against the second sinker along the first direction. A first driving part is provided between the movable seat and each of the pull claws for driving the second ends of each of the pull claws to move away from each other. A second driving part is provided between the movable seat and the fixed seat for driving the movable seat to move away from the first sinker.

[0012] As a further description of the above technical solution:

[0013] The first end of each of the pull claws is hinged to the movable seat along an axis perpendicular to the first direction; the first driving part includes a driving block, which is movably disposed relative to the movable seat along the first direction, and a driving member for driving the driving block to move away from the first sink trough is provided between the movable seat and the driving block; a first inclined surface and a second inclined surface are provided between the driving block and the pull claw, and the first inclined surface and the second inclined surface are configured to drive each of the pull claws to swing away from each other when the driving block moves away from the first sink trough.

[0014] As a further description of the above technical solution:

[0015] The driving component includes a first bolt, the head of which abuts against the side of the movable seat away from the first sink, and the first bolt passes through a through hole provided on the movable seat and is threadedly connected to the driving block.

[0016] As a further description of the above technical solution:

[0017] The driving block has a limiting groove on its side wall that corresponds to each of the pull claws, and the bottom of the limiting groove forms the first inclined surface.

[0018] As a further description of the above technical solution:

[0019] The end of the claw that abuts against the jaw spring is provided with a ramp surface. The ramp surface is configured such that when the drive block moves toward the first sink groove, each claw can close together under the elastic force of the jaw spring until each claw disengages from the jaw spring.

[0020] As a further description of the above technical solution:

[0021] The fixed base is provided with a guide portion for guiding the movable base to slide along the first direction.

[0022] As a further description of the above technical solution:

[0023] The fixed base includes a cylindrical part, one end of which is used to abut against the second settling tank, and the other end of the cylindrical part is provided with an end plate. The end plate is provided with a through hole. The second driving part includes a second bolt, which passes through the through hole and is threadedly connected to the movable seat. A tension nut is provided on the side of the end plate away from the movable seat. The tension nut is threadedly connected to the second bolt and abuts against the end plate.

[0024] As a further description of the above technical solution:

[0025] The central hole of the cylindrical portion constitutes the guide portion.

[0026] A method for assembling the jaw spring of a steel strip take-up roller, providing a jaw spring assembly fixture for the steel strip take-up roller as described in any one of the claims, characterized in that it includes the following steps:

[0027] S1. Place the jaw spring in the first recess;

[0028] S2. Place the movable seat and the pull claw in the second recess, so that the second end of the pull claw passes through the jaw spring and the second end of the pull claw protrudes from the end of the jaw spring away from the second recess;

[0029] S3. Operate the first drive unit to move the claws of each of the pull claws away from each other until each claw head interferes with the jaw spring in the first direction;

[0030] S4. Place the fixed seat in the second sink and abut against the second sink. Operate the second drive unit to move the movable seat away from the first sink to compress the jaw spring until the end of the jaw spring away from the second sink does not protrude from the side wall of the receiving groove.

[0031] S5. Install the clamps into the receiving slot;

[0032] S6. Operate the second drive unit to reset the jaw spring;

[0033] S7. Operate the first drive unit to disengage the claw head from the jaw spring, thus completing the jaw spring installation.

[0034] Before the steps of placing the movable seat and the pull claw in the second recess, allowing the second end of the pull claw to pass through the jaw spring, and making the second end of the pull claw protrude from the end of the jaw spring away from the second recess, the method further includes the following steps:

[0035] Operate the steel strip take-up roller to bring the first sector plate and the second sector plate into a closed state.

[0036] This invention provides a clamping spring assembly tool and method for a steel strip take-up roller, which has the following advantages:

[0037] 1. In this invention, the tooling employs a radially opening and closing claw structure. In its normal state, the claw head is retracted, with an outer diameter smaller than the inner hole of the spring, allowing it to easily penetrate the central hole of the spring within the deep groove. After expansion, the claw head protrudes radially, firmly hooking onto the spring end face. The entire tooling applies force from within the spring, eliminating the need for external pressure heads. It is perfectly suited to the enclosed and narrow recessed space inside the fan-shaped plate, solving the problem of traditional external tooling being unable to penetrate deeply into the working area.

[0038] 2. In this invention, multiple pull claws are installed together on the same movable seat and move axially synchronously with the movable seat, which can ensure that the compression stroke and end face flatness of all springs in a single group are completely consistent; after the clamps are installed, the clamps are subjected to uniform force on both sides without any skew or jamming problems. This avoids clamping and uneven wear failure from the assembly source, ensuring smooth expansion and contraction of the winding roller and improving the pass rate of the expansion and contraction test at the factory.

[0039] 3. In this invention, after assembly, the first drive unit is reversed to release the tension, and the claw head can automatically retract radially under the action of the spring force, completely separating from the spring end face; the tooling can be directly pulled out from the sink groove as a whole without scratching the inner wall of the spring, the sink groove wall and the mating surface of the clamp, eliminating the risk of parts bumping or scratching, and greatly improving the ease of operation.

[0040] 4. In this invention, the expansion of the pull claw and the compression of the spring are achieved by using a threaded transmission structure of bolts and nuts. With the help of the force amplification effect of the thread, the high-stiffness spring can be compressed with just a manual wrench, without the need for manual brute force. The spring is constrained by the pull claw throughout the process, completely eliminating the safety hazard of the spring popping out and injuring people, greatly reducing labor intensity and improving work safety. Attached Figure Description

[0041] Figure 1 This is a schematic diagram of the jaw spring assembly fixture for the steel strip take-up roller proposed in this invention;

[0042] Figure 2 This is a schematic diagram of the structure of the driving block in this invention;

[0043] Figure 3 This is a schematic diagram of the pull claw structure in this invention;

[0044] Figure 4 This is a schematic diagram of the cylindrical portion in this invention;

[0045] Figure 5 This is a schematic diagram of the tension nut structure in this invention;

[0046] Figure 6 This is a schematic diagram of the clamp structure in this invention;

[0047] Figure 7 This is a schematic diagram of the jaw spring in this invention;

[0048] Figure 8 This is a schematic diagram of the receiving groove in this invention.

[0049] Legend: 1. First sector plate; 11. Receiving groove; 12. First sink groove; 2. Second sector plate; 21. Second sink groove; 3. Jaw spring; 4. Clamp; 5. Movable seat; 6. Pull claw; 61. Claw head; 611. Inclined surface; 62. Second inclined surface; 7. Fixed seat; 71. Cylindrical part; 72. End plate; 73. Guide part; 8. First drive part; 81. Drive block; 811. First inclined surface; 812. Limiting groove; 82. Drive component; 821. First bolt; 9. Second drive part; 91. Second bolt; 92. Tensioning nut; X, First direction; Y, Second direction. Detailed Implementation

[0050] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0051] See Figure 1 , Figure 6 , Figure 8As shown in the figure, this embodiment provides a jaw spring assembly fixture for a steel strip take-up roller, which is adapted to the press-fitting operation of the jaw spring built into the sector plate of the steel strip take-up roller.

[0052] The steel strip take-up roller includes a first sector plate 1 and a second sector plate 2 that open and close to each other along a first direction X; the first sector plate 1 is provided with a receiving groove 11 for assembling clamps 4 along a second direction Y, the second direction Y being perpendicular to the first direction X and the axis of the steel strip take-up roller; the receiving groove 11 is provided with a first recess 12 for receiving clamp springs 3 on one side of its groove wall near the second sector plate 2, and the second sector plate 2 is provided with a second recess 21 coaxial with the first recess 12.

[0053] When the take-up roller is working, the second sector plate 2 moves relative to the first sector plate 1 along the first direction X, and drives the clamp 4 to compress the jaw spring 3 through the pull rod to achieve misaligned clamping of the jaws; when the diameter is reduced, the jaw spring 3 rebounds and pushes the clamp 4 to reset, so that the jaws are aligned and released.

[0054] like Figure 1 As shown, the jaw spring assembly fixture of this embodiment mainly includes a movable seat 5, multiple pull claws 6, a fixed seat 7, a first drive unit 8, and a second drive unit 9.

[0055] The movable seat 5 is a block-shaped load-bearing structure that is movably assembled into the internal cavity of the second sink 21 along the first direction X. The first end (right end, the end closer to the bottom of the second sink 21) of each of the pull claws 6 is mounted on the movable seat 5, so that all the pull claws 6 can move synchronously axially with the movable seat 5 along the first direction X; the second end (left end, the end closer to the first sink 21) of the pull claw 6 is a free end that passes through the second sink 21 and the first sink 12 in sequence along the axial direction and can extend into the interior of the receiving groove 11.

[0056] The first end of each claw 6 is movably connected to the movable seat 5, so that the second end of the claw 6 can open and close radially along the first sink 12; that is, the second ends of multiple claws 6 can approach each other (closed state) or move away from each other (expanded state).

[0057] Each pull claw 6 has a claw head 61 integrally provided at its second end. The claw head 61 bends and protrudes along the radial direction of the first groove 12 and in a direction away from the center of the groove. When the second ends of the pull claws 6 expand away from each other, the right end face of the claw head 61 can form abutment interference with the left end face of the jaw spring 3 (the end away from the second sector plate) along the first direction X, thereby engaging the limiting spring so that the spring can move axially synchronously with the pull claw.

[0058] The fixed seat 7 is assembled at the outer port of the second sink 21 and abuts against the stepped end face of the second sink 21 along the first direction X, serving as a reaction force support base for the spring compression operation. The first driving part 8 is disposed between the movable seat 5 and each pull claw 6, and is used to drive the second end of each pull claw 6 to open and close radially, realizing the engagement, locking and release of the claw head and the spring; the second driving part 9 is disposed between the movable seat 5 and the fixed seat 7, and is used to drive the movable seat 5 to move away from the first sink 12 along the first direction X, thereby pulling the jaw spring 3 axially compressed through the pull claw.

[0059] like Figure 2 , Figure 3 As shown, in this embodiment, the first end of each claw 6 is hinged to the movable seat 5 via a hinge shaft. The axis of the hinge shaft is perpendicular to the first direction X, allowing the claw 6 to swing slightly around the hinge shaft, thereby realizing the radial opening and closing action of the second end.

[0060] The first driving unit 8 includes a driving block 81 and a driving member 82; the driving block 81 is slidably mounted in the central mounting cavity of the movable seat 5 along the first direction X, and the driving member 82 is used to drive the driving block 81 to reciprocate along the first direction X.

[0061] The drive block 81 and the claw 6 are provided with a first inclined surface 811 and a second inclined surface 62 that cooperate with each other: the first inclined surface 811 is provided on the outer side wall of the drive block 81, and the second inclined surface 62 is provided on the inner side wall of the claw 6; when the drive member 82 drives the drive block 81 to move away from the first sink 12 (to the right), the first inclined surface 811 presses the second inclined surface 62, and the inclined surface component force pushes each claw 6 to swing outward around the hinge axis, so that the second ends of each claw move away from each other, and the claw head 61 expands and presses against the spring end face.

[0062] Specifically, the driving component 82 adopts a first bolt 821. A through hole is opened at the center of the right end of the movable seat 5. The first bolt 821 passes through the through hole from right to left. Its screw part is threadedly connected to the central threaded hole of the driving block 81. The bolt head abuts against the right end face of the movable seat. When the first bolt 821 is tightened, the bolt pulls the driving block 81 to move to the right, which realizes the opening action of the pull claw.

[0063] Furthermore, one end of the claw head 61 is provided with a ramp surface 611, which is inclined radially inward from the root of the claw head to the end. When the first bolt 821 is loosened and the drive block 81 moves to the left to reset, the squeezing force of the first ramp surface 811 on the second ramp surface 62 disappears, and the elastic force of the jaw spring 3 acts on the ramp surface 611, generating a radially inward component force, which automatically pushes the second ends of each claw 6 to close together, ultimately causing the claw head 61 to completely detach from the spring end face, realizing automatic shrinkage and demolding without the need for manual pulling of the claws, significantly improving the ease of operation.

[0064] In this embodiment, the fixed seat 7 includes a cylindrical part 71 and an end plate 72; the cylindrical part 71 is a cylindrical structure, with its left end face abutting against the stepped surface of the second sink 21, and its right end fixedly connected to the end plate 72; the central inner hole of the cylindrical part 71 constitutes the guide part 73, and the movable seat 5 slides along the inner wall of the cylindrical part 71, thereby ensuring that the movable seat moves linearly in the first direction X and does not deviate radially.

[0065] The second drive unit 9 includes a second bolt 91 and a tension nut 92; a through hole is provided in the center of the end plate 72, through which the second bolt 91 passes from right to left, and the left end of its screw is threadedly connected to the central threaded hole of the movable seat 5; the tension nut 92 is threadedly fitted to the right end of the second bolt 91, and the left end face of the tension nut abuts against the right end face of the end plate 72.

[0066] During spring compression, the second bolt 91 remains stationary. Tightening the tension nut 92 causes it to move to the left along the bolt via threaded transmission, pushing against the end plate 72. Since the fixed seat 7 cannot move to the left due to its abutment against the step of the second recess 21, the reaction force causes the second bolt 91 and the movable seat 5 to move synchronously to the right, thereby pulling the pull claw 6 and the jaw spring 3 to compress to the right, achieving controllable spring compression. The threaded transmission provides a significant force amplification effect, allowing for easy compression of high-stiffness springs using only a regular wrench, and the compression stroke can be precisely controlled by the number of turns the nut is turned.

[0067] Based on the above tooling structure, this embodiment also provides a method for assembling the jaw spring of a steel strip take-up roller, including the following steps:

[0068] S1. Tooling preparation and workpiece pretreatment:

[0069] Prepare the above-mentioned jaw spring assembly fixture, manually check that the opening and closing of the pull claw and the sliding action of the movable seat are smooth and without jamming; operate the steel strip take-up roller to make the first sector plate 1 and the second sector plate 2 close together, ensuring that the first sink 12 and the second sink 21 are coaxially aligned.

[0070] S2, Spring Preset:

[0071] Insert the jaw spring 3 into the first sink 12 from one side of the receiving slot 11, and the right end of the spring naturally extends out of the sink port.

[0072] S3, Clothing Pull-Action Claw Component:

[0073] The movable seat 5, equipped with the pull claw 6 and the first drive unit 8, is fed into the outer port of the second recess 21, so that the second end of the pull claw 6 passes through the inner hole of the second recess 21 and the jaw spring 3 in sequence to the left, and finally the claw head 61 protrudes from the left end face of the jaw spring 3 (the end away from the second recess); at this time, the pull claw is in a naturally retracted state, and the outer diameter is smaller than the inner hole of the spring, so the insertion process is smooth and without interference.

[0074] S4. Tension locking spring:

[0075] Tighten the first bolt 821 with an Allen wrench, pull the drive block 81 to the right, and push each claw 6 to swing outward and expand through the engagement of the first inclined surface 811 and the second inclined surface 62 until the right end face of the claw head 61 is fully in contact with the left end face of the jaw spring 3, forming axial interference, and completing the locking of the spring end.

[0076] S5, Compression spring inserted into slot:

[0077] Mount the fixing seat 7 on the outside of the second bolt 91 and push it into the second recess 21 so that the left end face of the cylindrical part 71 is pressed against the stepped surface of the second recess. Screw the tension nut 92 into the right end of the second bolt 91 and tighten the tension nut 92 at a uniform speed. Pull the movable seat 5 and the pull claw 6 to move to the right in sync, compressing the jaw spring 3. Continue to tighten until the left end face of the jaw spring 3 is completely retracted into the first recess 12 and does not protrude from the side wall of the receiving groove 11. Stop tightening and maintain the current position.

[0078] S6. Insert the clamps:

[0079] While maintaining the spring compression limit state, push the clamp 4 into the receiving groove 11 of the first sector plate 1 along the second direction Y, so that the tail end face of the clamp is aligned with the left end face of the jaw spring 3.

[0080] S7. Release the tension, and the spring returns to its original position.

[0081] Loosen the tension nut 92 by turning it in the opposite direction to release the axial tension; the jaw spring 3 springs back to the left under its own elastic force, pressing against the tail of the clamp 4, and at the same time pushing the movable seat 5 and the pull claw 6 to move slightly to the left to reset.

[0082] S8. Shrink and demold, remove the tooling:

[0083] Loosen the first bolt 821 by rotating it in the opposite direction, and the drive block 81 moves to the left to reset, thus eliminating the tension force on the jaws. The spring force of the jaw spring acts on the inclined surface 611 of the jaw head, pushing each jaw 6 to swing inward and retract, and the jaw head 61 completely separates from the spring end face. Then, pull the entire set of fixtures out to the right from the second sink 21 to complete the assembly of a single set of jaw springs.

[0084] After all the jaw springs are assembled, assemble the sector plate assembly onto the take-up roller spindle and perform no less than 10 whole-machine expansion and contraction cycle tests to verify that the jaws open and close freely without jamming. Then the factory acceptance test can be completed.

[0085] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A jaw spring assembly fixture for a steel strip take-up roller, characterized in that, The steel strip take-up roller includes a first sector plate (1) and a second sector plate (2) that open and close to each other along a first direction. The first sector plate (1) is provided with a receiving groove (11) for a clamp (4) to be assembled on the first sector plate (1) along a second direction. The second direction is perpendicular to the first direction and perpendicular to the axis of the steel strip take-up roller. The side wall of the receiving groove (11) near the second sector plate (2) is provided with a first recess (12) for receiving a jaw spring (3). The second sector plate (2) is provided with a second recess (21) coaxial with the first recess (12). The clamp spring 3 assembly fixture includes: The movable seat (5) is used to be movably installed in the second sink (21) along the first direction; Multiple pull claws (6), the first end of each pull claw (6) is mounted on the movable seat (5) so that each pull claw (6) can move synchronously with the movable seat (5) in the first direction. The second end of each pull claw (6) is used to penetrate into the receiving groove (11) along the second sinker (21) and the first sinker (12). The first end of each pull claw (6) is movably connected to the movable seat (5) so that the second end of each pull claw (6) can open and close to each other in the radial direction of the first sinker (12). The second end of each pull claw (6) is provided with a claw head (61) bent in the radial direction of the first sinker (12) away from the center of the first sinker (12) so that when the second ends of each pull claw (6) are far apart from each other, each claw head (61) can abut against the end of the jaw spring (3) pre-placed in the first sinker (12) away from the second sector plate (2) in the first direction. A fixing seat (7) is used to abut against the second sink (21) along the first direction; A first driving part (8) is provided between the movable seat (5) and each of the pull claws (6) for driving the second ends of each of the pull claws (6) to move away from each other. A second drive unit (9) is provided between the movable seat (5) and the fixed seat (7) for driving the movable seat (5) to move away from the first sink (12).

2. The jaw spring assembly fixture for the steel strip take-up roller according to claim 1, characterized in that, The first end of each of the pull claws (6) is hinged to the movable seat (5) along an axis perpendicular to the first direction; the first drive unit (8) includes a drive block (81), which is movably disposed relative to the movable seat (5) along the first direction, and a drive member (82) for driving the drive block (81) to move away from the first sink (12) is provided between the movable seat (5) and the drive block (81); a first inclined surface (811) and a second inclined surface (62) are provided between the drive block (81) and the pull claws (6), and the first inclined surface (811) and the second inclined surface (62) are configured to drive each of the pull claws (6) to swing away from each other when the drive block (81) moves away from the first sink (12).

3. The jaw spring assembly fixture for the steel strip take-up roller according to claim 2, characterized in that, The drive component (82) includes a first bolt (821), the bolt head of the first bolt (821) abuts against the side of the movable seat (5) away from the first sinker (12), and the first bolt (821) passes through a through hole provided on the movable seat (5) and is threadedly connected to the drive block (81).

4. The jaw spring assembly fixture for the steel strip take-up roller according to claim 3, characterized in that, The drive block (81) has a limiting groove (812) on its side wall that corresponds one-to-one with each of the pull claws (6), and the bottom of the limiting groove (812) forms the first inclined surface (811).

5. The jaw spring assembly fixture for the steel strip take-up roller according to claim 2, characterized in that, The end of the claw (61) that abuts against the jaw spring (3) is provided with a ramp (611). The ramp (611) is configured such that when the drive block (81) moves toward the first sinker (12), each claw (61) can close together under the elastic force of the jaw spring (3) until each claw (61) disengages from the jaw spring (3).

6. The jaw spring assembly fixture for the steel strip take-up roller according to claim 1 or 2, characterized in that, The fixed seat (7) is provided with a guide part (73) for guiding the movable seat (5) to slide along the first direction.

7. The jaw spring assembly fixture for the steel strip take-up roller according to claim 1, characterized in that, The fixed seat (7) includes a cylindrical part (71), one end of which is used to abut against the second sink (21), and the other end of the cylindrical part (71) is provided with an end plate (72). The end plate (72) is provided with a through hole. The second drive part (9) includes a second bolt (91), which passes through the through hole and is threadedly connected to the movable seat (5). A tension nut (92) is provided on the side of the end plate (72) away from the movable seat (5). The tension nut (92) is threadedly connected to the second bolt (91) and abuts against the end plate (72).

8. The jaw spring assembly fixture for the steel strip take-up roller according to claim 7, characterized in that, The central hole of the cylindrical portion (71) constitutes the guide portion (73).

9. A method for assembling the jaw spring of a steel strip take-up roller, providing the jaw spring assembly fixture of the steel strip take-up roller according to any one of claims 1 to 8, characterized in that, Includes the following steps: S1. The jaw spring (3) is pre-placed in the first recess (12); S2. Place the movable seat (5) and the pull claw (6) in the second recess (21), so that the second end of the pull claw (6) passes through the jaw spring (3) and the second end of the pull claw (6) protrudes from the end of the jaw spring (3) away from the second recess (21); S3. Operate the first drive unit (8) to move the claws (61) of each of the pull claws (6) away from each other until each of the claws (61) interferes with the jaw spring (3) in the first direction; S4. Place the fixed seat (7) in the second sink (21) and abut against the second sink (21). Operate the second drive unit (9) to move the movable seat (5) away from the first sink (12) to compress the jaw spring (3) until the end of the jaw spring (3) away from the second sink (21) does not protrude from the side wall of the receiving groove (11). S5. Install the clamp (4) into the receiving slot (11); S6. Operate the second drive unit (9) to reset the jaw spring (3); S7. Operate the first drive unit (8) to disengage the claw (61) of the pull claw (6) from the jaw spring (3), and the jaw spring (3) is installed.

10. The method for assembling the jaw spring of the steel strip take-up roller according to claim 9, characterized in that, Before placing the movable seat (5) and the pull claw (6) in the second recess (21), such that the second end of the pull claw (6) passes through the jaw spring (3), and such that the second end of the pull claw (6) protrudes from the end of the jaw spring (3) away from the second recess (21), the following steps are also included: Operate the steel strip take-up roller to bring the first sector plate (1) and the second sector plate (2) into a closed state.

Images