Prestressed spring wire bending machine

Abstract

The utility model relates to a steel wire bending machine for prestressed spring, including stand, one side of stand is equipped with work table, is equipped with the rolling axle on the work table, is equipped with power transmission mechanism in the work table, power transmission mechanism drives the rolling axle and rotates around its axis, the outer surface of rolling axle is provided with steel wire fixed establishment, is equipped with steel wire guide mechanism on the stand, steel wire guide mechanism is through the drive mechanism and is slidingly arranged on one side of rolling axle, the utility model's purpose lies in, provide a steel wire bending machine for prestressed spring to solve the existing steel wire bending machine when fixed steel wire's starting end can not provide enough friction, lead to steel wire in the process of winding easy to slip or separate, influence forming accuracy and in the process of pushing steel wire steel wire strength will be influenced and the technical problem of low work efficiency.

Description

Technical Field

[0001] This utility model belongs to the field of spring steel wire processing technology, and in particular relates to a steel wire bending machine for prestressed springs. Background Technology

[0002] Prestressed spring wire has high strength. Currently, bending machines on the market, due to structural limitations, can usually only bend the wire to a certain angle, and cannot bend it to a larger angle or a spring-like structure. To solve the above technical problems, Chinese invention patent CN201910207795.6, entitled "A Bending Device for Processing Spring-Type Steel Wire," discloses a bending device for processing spring-type steel wire. The device includes a worktable, with a roller at the upper end of the worktable. A fixed sleeve is slidably engaged with the outer ring of the roller. A first support plate and a second support plate are rotatably connected to both sides of the roller. A rotating shaft is inserted through the second support plate. One end of the rotating shaft is inserted into the roller, and the other end of the rotating shaft is equipped with a motor. The rotating shaft of the motor is connected to the rotating shaft via a chain. Two support rods are provided on one side of the roller, and a guide roller is provided between the two support rods. A push rod is provided on one side of the guide roller, and the push rod is slidably connected to the worktable via a groove.

[0003] While the above technical solution can bend the steel wire into a spring shape, it still has the following technical defects: 1. The above solution relies solely on the retaining strip of the inner ring of the fixing sleeve to fix the starting end of the steel wire. When processing high-hardness steel wire, this fixing method may not provide sufficient friction, causing the steel wire to easily slip or detach during winding, thus affecting the forming accuracy. 2. The method of pushing the steel wire with a push rod has high friction, which will affect the strength of the steel wire. Furthermore, the push rod needs to be manually pushed, which is inefficient. Utility Model Content

[0004] The purpose of this utility model is to provide a wire bending machine for prestressed springs, so as to solve the technical problems of existing wire bending machines that cannot provide sufficient friction when fixing the starting end of the wire, which causes the wire to slip or come off easily during the winding process, affecting the forming accuracy, and the wire strength and work efficiency are affected during the pushing process.

[0005] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a wire bending machine for prestressed springs, including a frame, a worktable on one side of the frame, a roller on the worktable, a power transmission mechanism inside the worktable, the power transmission mechanism driving the roller to rotate around its axis, a wire fixing mechanism on the outer surface of the roller, a wire guiding mechanism on the frame, and the wire guiding mechanism being slidably disposed on one side of the roller through a drive mechanism.

[0006] Preferably, the power transmission mechanism includes a drive motor, which is fixedly installed in the worktable. The drive end of the drive motor extends out of the worktable through a slot opened on the upper surface of the worktable and a rotating disk is fixedly installed thereon. The roller is vertically arranged on the upper surface of the rotating disk.

[0007] Preferably, the wire fixing mechanism includes a limiting seat fixed to the outer surface of the roller, a pressing component located above the limiting seat, and a control component for driving the pressing component to move up and down.

[0008] Preferably, the clamping assembly includes a drive rod and a clamping block. The limiting seat has a drive groove and several channels communicating with the drive groove. The drive rod is movably disposed in the channels. The top of the drive rod extends outside the limiting seat, the clamping block is fixed thereon, and the bottom of the drive rod extends into the drive groove.

[0009] Preferably, the control component includes a handle, one end of which is connected to a lever extending into the drive groove. The lever is provided with a cam, and the drive lever is upper-limited by an adjustment block, the adjustment block being provided with a drive portion.

[0010] Preferably, one side of the limiting seat is provided with a locking mechanism for restricting the handle from returning to its original position.

[0011] Preferably, the driving part has an upper end and a lower end, the upper end and the cam are correspondingly arranged, when the convex surface of the cam contacts the upper end, the driving part drives the adjusting block to move down and causes the driving rod to move downward, thereby forcing the pressing block to press down, and a spring is provided between the lower end and the bottom surface of the driving groove.

[0012] Preferably, the upper surface of the limiting seat is provided with a limiting hole, the bottom of the clamping block is provided with pressing teeth corresponding to the limiting hole, and the driving rod is arranged at both ends of the limiting hole.

[0013] Preferably, the driving mechanism is a linear drive module, and the wire guide mechanism is fixedly installed on the driving end of the linear drive module and can move longitudinally along the roller. The wire guide mechanism includes a support base, and the support base is provided with a wire guide nozzle for the wire to pass through. A guide component is provided on one side of the support base.

[0014] Preferably, the guide assembly includes two connecting seats, with an upper guide roller and a lower guide roller rotatably disposed between the two connecting seats, and a gap is formed between the upper guide roller and the lower guide roller for the steel wire to pass through.

[0015] Through the above technical solution, compared with the prior art, this utility model has the following beneficial effects: 1. By fixing a steel wire fixing mechanism on the outer surface of the roller, the steel wire fixing mechanism consists of a limiting seat, a pressing component, and a control component. When it is necessary to fix the end of the steel wire, first place the end of the steel wire in the limiting hole at the top of the limiting seat, and then rotate the handle in the control component. The handle will drive the lever fixedly connected to it to rotate synchronously, thereby driving the cam on it to rotate, so that the convex surface of the cam contacts the driving part on the adjusting block, pressing down the driving part. Since the driving part and the adjusting block are fixedly connected, they move synchronously, thereby being pressed down by the convex surface of the cam. The wheel's action causes the adjusting block to move downwards. After the adjusting block moves downwards, the drive rods fixed to its two ends are driven downwards by the adjusting block, causing the clamping block fixed to the outside of the drive rod to press down towards the limiting hole, thus clamping and fixing the steel wire in the limiting hole. Then, the locking mechanism limits the handle, completing the entire steel wire fixing process. When it is necessary to remove the steel wire, simply release the limiting mechanism. At this time, the spring located between the drive part and the bottom surface of the drive groove changes from its stored state to a released state, pushing the adjusting block upwards, returning the handle to its original position, and the cam plane contacts the drive part. The drive rod moves upwards, causing the clamping block to disengage from the steel wire, allowing the steel wire to be removed from the limiting hole. The above-described method of fixing the steel wire end provides strong stability. The cooperation between the clamping block and the limiting seat provides greater friction and increases the strength of the clamping block when clamping the steel wire. This avoids the technical problem of existing fixing methods failing to provide sufficient friction when processing high-hardness steel wire, causing the steel wire to slip or detach during winding, thus affecting the forming accuracy.

[0016] By setting a wire guide mechanism on one side of the roller, and having the wire guide mechanism slide along the longitudinal surface of the roller via a drive mechanism (the drive mechanism being a linear drive module), the wire guide mechanism is installed on the drive end of the linear drive module. The linear drive module drives the wire guide mechanism up and down along the roller. In use, the wire to be bent is passed through the wire nozzle, the upper guide roller, and the lower guide roller in sequence, and then its end is fixed to the wire fixing mechanism. The drive motor drives the roller to rotate via a rotating disk, causing the wire to form a spring-like wire structure around the roller. At this time, the linear drive module starts and drives the wire located on the wire guide mechanism to move downward to assist in wire processing. The entire process does not require manual pushing, saving manpower and improving work efficiency. During this process, the wire does not come into contact with foreign objects, ensuring that the strength of the wire is not affected. This solves the technical problems of existing wire bending machines where the strength of the wire is affected and the work efficiency is low during the wire pushing process.

[0017] By vertically mounting the rollers on the worktable via a rotating disc, it becomes easier to remove the processed springs from above. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0019] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 For the present utility model Figure 1 A magnified structural diagram of point A; Figure 3 This is a schematic diagram of the connection structure between the roller and the drive motor of this utility model. Figure 4 This is a schematic diagram of the steel wire fixing mechanism of this utility model; Figure 5 This is a schematic diagram of the internal structure of the wire fixing mechanism of this utility model; Figure 6 This is a schematic diagram of the clamping assembly in the clamping state of this utility model; Figure 7 This is a schematic diagram of the internal cross-sectional structure of the clamping component of this utility model in the clamping state; Figure 8 This is a schematic diagram of the compressed component in the relaxed state of this utility model; Figure 9 This is a schematic diagram of the internal cross-sectional structure of the clamping component of this utility model in the relaxed state; The utility model reference information is as follows: 1. Stand; 2. Workbench; 3. Roller; 4. Wire fixing mechanism; 5. Wire guiding mechanism; 6. Drive mechanism; 7. Drive motor; 8. Rotary disk; 9. Locking mechanism; 401. Limit seat; 402. Clamping assembly; 403. Control assembly; 404. Drive rod; 405. Clamping block; 406. Drive groove; 407. Channel; 408. Handle; 409. Cam; 410. Adjusting block; 411. Drive unit; 412. Spring; 413. Limit hole; 414. Pressing tooth; 415. Handle; 501. Support seat; 502. Wire guide; 503. Connecting seat; 504. Upper guide roller; 505. Lower guide roller; The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] The following will refer to the appendix in the embodiments of this utility model. Figure 1-9The technical solutions in the embodiments of this utility model are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of this utility model, and not all of them. Based on the embodiments of this utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of this utility model.

[0021] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0022] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. Additionally, the technical solutions of the various embodiments can be combined with each other, but only on the basis of being achievable by those skilled in the art. When the combination of technical solutions is contradictory or impossible to implement, such a combination of technical solutions should be considered non-existent and not within the scope of protection claimed by this utility model.

[0023] like Figure 1-9 As shown: A wire bending machine for prestressed springs includes a frame 1, a worktable 2 on one side of the frame 1, a roller 3 on the worktable 2, a power transmission mechanism inside the worktable 2, the power transmission mechanism drives the roller 3 to rotate around its axis, a wire fixing mechanism 4 is provided on the outer surface of the roller 3, a wire guiding mechanism 5 is provided on the frame 1, and the wire guiding mechanism 5 is slidably disposed on one side of the roller 3 through a drive mechanism 6.

[0024] In this embodiment, the support frame 1 serves as a support, the workbench 2 is fixed to one side of the support frame 1, and the workbench 2 has a cavity inside for placing the drive motor 7 and a slot for the drive end of the drive motor to extend out.

[0025] like Figure 1-3 As shown: The power transmission mechanism includes a drive motor 7, which is fixedly installed in the worktable 2. The drive end of the drive motor 7 extends out of the worktable 2 through a slot on the upper surface of the worktable 2, and a rotating disk 8 is fixedly mounted on it. A roller 3 is vertically arranged on the upper surface of the rotating disk 8. In this embodiment, the rotating disk 8 and the drive end of the drive motor 7 are coupled. The upper surface of the rotating disk 8 is provided with a connecting end that matches the roller 3. The roller 3 is sleeved on the connecting end and limited by a threaded connection. When the drive motor starts, the drive end will drive the rotating disk 8 to rotate, thereby causing the roller 3 to rotate.

[0026] The power transmission mechanism and drive mechanism 6 are connected to the central control system and the power supply system. The central control system controls the operation of both, and the power supply system provides power to both.

[0027] like Figure 4-5 As shown: The wire fixing mechanism 4 includes a limiting seat 401 fixed to the outer surface of the roller 3, a pressing component 402 located above the limiting seat 401, and a control component 403 for driving the pressing component 402 to move up and down. The limiting seat 401 is fixed to the roller 3 in a detachable or integral manner, and the pressing component 402 is located at the end away from the roller 3.

[0028] like Figure 6-9 As shown: The clamping assembly 402 includes a drive rod 404 and a clamping block 405. The limiting seat 401 has a drive groove 406 and several channels 407 connected to the drive groove. The drive rod 404 is movably disposed in the channel 407. The top of the drive rod 404 extends to the outside of the limiting seat 401, and the clamping block 405 is fixed thereon. The bottom of the drive rod 404 extends into the drive groove 406. In this embodiment, two channels 407 are provided, and the drive rod 404 is movably disposed in each of them.

[0029] like Figure 4-5 As shown: The control component 403 includes a handle 415, one end of which is connected to a lever 408 extending into the drive groove 406. A cam 409 is provided on the lever 408. An adjustment block 410 is provided at the upper limit of the drive rod 404. A drive part 411 is provided on the adjustment block 410. The handle 415 is perpendicular to one side of the lever 408. The handle 415 and the lever 408 are integrally formed. The cam 409 and the lever 408 move synchronously. The two ends of the adjustment block 410 have locking parts. The locking parts are composed of locking blocks on both sides and clearance grooves between the locking blocks. When the adjustment block 410 is installed between the two sets of drive rods 404, the drive rod 404 is located in the clearance groove. The locking blocks on both sides are correspondingly set on both sides of the drive rod 404. The upper and lower ends of the locking blocks are limited and fixedly connected to the drive rod 404 by a locking component. The locking component consists of two sets of locking blocks installed on the drive rod 404. Two sets of locking blocks are distributed vertically, forming a gap between them for locking the locking blocks. When the adjusting block 410 is moved up and down, the locking block of the adjusting block 410 abuts against the locking block, thereby stimulating the drive rod 404 to move synchronously.

[0030] like Figure 6-9 As shown: One side of the limiting seat 401 is provided with a locking mechanism 9 for limiting the return of the handle 415. In this embodiment, the locking mechanism 9 includes a positioning hole and a locking rod. When the handle 415 is pressed down to make the pressing block 405 press the steel wire, the locking rod is inserted into the positioning hole. At this time, the locking rod will abut against the top of the handle 415 to prevent it from returning to its original position. Alternatively, the limiting can be achieved by using a spring locking post.

[0031] like Figure 6-9 As shown: The drive unit 411 has an upper end and a lower end. The upper end is correspondingly arranged with the cam 409. When the convex surface of the cam 409 contacts the upper end, the drive unit 411 drives the adjusting block 410 to move down and causes the drive rod 404 to move down, thereby forcing the pressing block 405 to press down. A spring 412 is provided between the lower end and the bottom surface of the drive groove 406. In this embodiment, the drive unit 411 and the adjusting block 410 are integrally formed or the adjusting block 410 has a slot for fixing the drive unit 411. The two sides of the drive unit 411 are provided with locking ends that match the slot.

[0032] like Figure 4-5 As shown: The upper surface of the limiting seat 401 is provided with a limiting hole 413, and the bottom of the pressing block 405 is provided with pressing teeth 414 corresponding to the limiting hole 413. The driving rod 404 is arranged at both ends of the limiting hole 413. In this embodiment, by setting the pressing teeth 414, the friction force on the steel wire can be further improved, thereby pressing the steel wire more firmly.

[0033] In summary, by fixing a wire fixing mechanism 4 to the outer surface of the roller 3, the wire fixing mechanism 4 consists of a limiting seat 401, a pressing component 402, and a control component 403. When it is necessary to fix the end of the wire, the end of the wire is first placed in the limiting hole 413 at the top of the limiting seat 401. Then, the handle 415 in the control component 403 is rotated. The handle 415 will drive the lever 408 fixedly connected to it to rotate synchronously, thereby driving the cam 409 on it to rotate. This causes the convex surface of the cam 409 to contact the driving part 411 on the adjusting block 410, pressing the driving part 410 down. Since the driving part 411 and the adjusting block 410 are fixedly connected and move synchronously, the adjusting block 410 moves down under the action of the cam 409. After the wire moves down, the drive rod 404, which is fixed at both ends, will be driven down by the adjusting block 410, causing the clamping block 405, which is fixed on the outside of the drive rod 404, to press down towards the limiting hole 413, thereby clamping and fixing the wire in the limiting hole 413. Then, the handle 415 is limited by the locking mechanism 9 to complete the entire wire fixing process. When it is necessary to remove the wire, it is only necessary to release the limiting of the locking mechanism 9. At this time, the spring 412 located between the drive part 411 and the bottom surface of the drive groove changes from the original stored state to the released state, pushing the adjusting block 410 upward, the handle 415 returns to its original position, the plane of the cam 409 contacts the drive part 411, and the drive rod 404 moves up to disengage the clamping block 405 from the wire. At this time, the wire can be taken out from the limiting hole 413. The above-mentioned method of fixing the end of the steel wire is highly stable. The cooperation between the clamping block 405 and the limiting seat 401 can provide greater friction and increase the strength of the clamping block when clamping the steel wire. This avoids the technical problem that the existing fixing method cannot provide sufficient friction when processing high-hardness steel wire, which causes the steel wire to slip or come off easily during the winding process, thus affecting the forming accuracy.

[0034] like Figure 1-2 As shown: the drive mechanism 6 is a linear drive module, and the wire guide mechanism 5 is fixedly installed on the drive end of the linear drive module and can move along the longitudinal direction of the roller 3. The wire guide mechanism 5 includes a support base 501, and the support base 501 is provided with a wire guide nozzle 502 for the wire to pass through. The wire guide nozzle 502 has a wire hole for the wire to pass through. A guide component is provided on one side of the support base 501. The linear drive module is existing technology and will not be described in detail here.

[0035] like Figure 2As shown: The guide assembly includes two connecting seats 503. The connecting seats 503 are provided with an adjusting block and adjusting bolt for adjusting the distance between the upper guide roller 504 and the lower guide roller 505. The upper guide roller 504 and the lower guide roller 505 are rotatably arranged between the two connecting seats 503. A gap is formed between the upper guide roller 504 and the lower guide roller 505 for the steel wire to pass through. By setting the upper guide roller 504 and the lower guide roller 505, the friction of the steel wire during the processing can be reduced, and it can also play a guiding role.

[0036] Specifically, a wire guide mechanism 5 is set on one side of the roller 3, and the wire guide mechanism 5 can slide along the longitudinal surface of the roller 3 through the drive mechanism 6. The drive mechanism 6 is a linear drive module, and the wire guide mechanism 5 is installed on the drive end of the linear drive module. The wire guide mechanism 5 moves up and down along the roller 3 through the up and down drive of the linear drive module. In use, the wire to be bent is passed through the wire nozzle 502, the upper guide roller 504, and the lower guide roller 505 in sequence, and then its end is fixed on the wire fixing mechanism 4. The drive motor 7 drives the roller 3 to rotate through the rotating disk 8, so that the wire forms a spring-type wire structure around the roller. At this time, the linear drive module starts and drives the wire located on the wire guide mechanism 5 to move downward to assist the wire processing. The whole process does not require manual pushing, saving manpower and improving work efficiency. In this process, the wire will not come into contact with foreign objects, which can ensure that the strength of the wire is not affected. This solves the technical problems of the wire strength being affected and the work efficiency being low in the existing wire bending machine during the pushing process.

[0037] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A wire bending machine for prestressed springs, comprising a frame (1), characterized in that: A workbench (2) is provided on one side of the stand (1), and a roller (3) is provided on the workbench (2). A power transmission mechanism is provided inside the workbench (2), and the power transmission mechanism drives the roller (3) to rotate around its axis. A wire fixing mechanism (4) is provided on the outer surface of the roller (3). A wire guiding mechanism (5) is provided on the stand (1), and the wire guiding mechanism (5) is slidably disposed on one side of the roller (3) through a drive mechanism (6).

2. The wire bending machine for prestressed springs according to claim 1, characterized in that: The power transmission mechanism includes a drive motor (7), which is fixedly installed in the workbench (2). The drive end of the drive motor (7) extends to the outside of the workbench (2) through a slot opened on the upper surface of the workbench (2) and a rotating disk (8) is fixedly installed on it. The roller (3) is vertically arranged on the upper surface of the rotating disk (8).

3. The wire bending machine for prestressed springs according to claim 1, characterized in that: The wire fixing mechanism (4) includes a limiting seat (401) fixed to the outer surface of the roller (3), a pressing assembly (402) located above the limiting seat (401), and a control assembly (403) for driving the pressing assembly (402) to move up and down.

4. The wire bending machine for prestressed springs according to claim 3, characterized in that: The clamping assembly (402) includes a drive rod (404) and a clamping block (405). The limiting seat (401) has a drive groove (406) and a plurality of channels (407) connected to the drive groove (406). The drive rod (404) is movably disposed in the channel (407). The top of the drive rod (404) extends to the outside of the limiting seat (401), and the clamping block (405) is fixed thereon. The bottom of the drive rod (404) extends into the drive groove (406).

5. The wire bending machine for prestressed springs according to claim 4, characterized in that: The control component (403) includes a handle (415), one end of which is connected to a lever (408) extending into the drive groove (406). The lever (408) is provided with a cam (409). The drive rod (404) has an upper limit adjustment block (410), and the adjustment block (410) is provided with a drive part (411).

6. The wire bending machine for prestressed springs according to claim 5, characterized in that: The limiting seat (401) is provided with a locking mechanism (9) on one side for limiting the return of the handle (415).

7. The wire bending machine for prestressed springs according to claim 6, characterized in that: The drive unit (411) has an upper end and a lower end. The upper end is correspondingly arranged with the cam (409). When the convex surface of the cam (409) contacts the upper end, the drive unit (411) drives the adjusting block (410) to move down and causes the drive rod (404) to move down, thereby forcing the pressing block (405) to press down. A spring (412) is provided between the lower end and the bottom surface of the drive groove (406).

8. The wire bending machine for prestressed springs according to claim 7, characterized in that: The upper surface of the limiting seat (401) is provided with a limiting hole (413), the bottom of the pressing block (405) is provided with pressing teeth (414) corresponding to the limiting hole (413), and the driving rod (404) is arranged at both ends of the limiting hole (413).

9. The wire bending machine for prestressed springs according to any one of claims 1-8, characterized in that: The driving mechanism (6) is a linear driving module. The wire guiding mechanism (5) is fixedly installed on the driving end of the linear driving module and can move along the longitudinal direction of the roller (3). The wire guiding mechanism (5) includes a support base (501). The support base (501) is provided with a wire guide nozzle (502) for wire to pass through. A guiding component is provided on one side of the support base (501).

10. The wire bending machine for prestressed springs according to claim 9, characterized in that: The guide assembly includes two connecting seats (503), with an upper guide roller (504) and a lower guide roller (505) rotatably disposed between the two connecting seats (503), and a gap is formed between the upper guide roller (504) and the lower guide roller (505) for the steel wire to pass through.

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