Steel ring fixing device

Abstract

The utility model belongs to the technical field of machining, and discloses a steel ring fixing device. The steel ring fixing device comprises a first base, a second base, a C-shaped ring and a first driving assembly, at least two positioning wheels are arranged on the first base, the C-shaped ring comprises a first C-shaped section and a second C-shaped section, the first end of the first C-shaped section is rotationally connected with the second base, the two positioning wheels can be attached to the outer wall of the first C-shaped section, and the second end of the first C-shaped section is rotationally connected with the second base. The second C-shaped section is fixed to the second base, the first driving assembly is arranged on the first base, the output end of the first driving assembly is connected with the second end of the first C-shaped section, and the first driving assembly drives the first C-shaped section to contract or reset in the radial direction of the C-shaped ring so that the C-shaped ring can support the steel ring in the radial direction of the steel ring. According to the steel ring fixing device, stable and uniform radial supporting force is provided for the steel ring, the stability of the steel ring is improved, the steel ring fixing device is simple in structure, the manufacturing cost is reduced, the operation complexity is reduced, and the fixing efficiency of the steel ring is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical processing technical field especially relates to steel ring fixing device. BACKGROUND

[0002] Tire steel ring is the important component part of vehicle tire, needs through the tooling to fix the steel ring in the tire production process, and the existing steel ring fixing device mostly adopts the multi -group inner support dog to exert the support force to the steel ring inner wall, realizes the fixation to the steel ring.

[0003] However, because needing the multi -group dog to work cooperatively, mechanical structure is more complex, involves multilayer transmission component and precision fit, leads to the high manufacturing cost, in addition, because the support point distribution of inner support dog is limited, its radial support force to the steel ring is often uneven, can cause the steel ring to appear the problem of deformation or slip in the assembly process, leads to the poor steel ring fixing effect.

[0004] Therefore, the urgent need kind of steel ring fixing device solves the above -mentioned technical problem. UTILITY MODEL CONTENTS

[0005] The utility model discloses a steel ring fixing device, improve the stability of steel ring, reduce the manufacturing cost, reduce the complexity of operation, improve the fixing efficiency of steel ring.

[0006] In order to achieve this purpose, the utility model adopts the following technical scheme:

[0007] Steel ring fixing device, comprising:

[0008] First base and second base, the first base and the second base interval setting, be equipped with at least two positioning wheels on the first base;

[0009] C ring, including first C type section and second C type section, the first end of first C type section is rotatably connected with the second base, two positioning wheels can respectively adhere to the outer wall of first C type section, the second C type section is fixed on the second base;

[0010] First drive assembly, set up on the first base, the output end of first drive assembly is connected with the second end of first C type section, and first drive assembly is configured to drive first C type section to contract or reset along the radial direction of C ring, so that C ring supports steel ring along the radial direction of steel ring.

[0011] Optionally, the first drive assembly comprises:

[0012] First drive cylinder, set up on the first base;

[0013] A first slider is provided on the first base and is slidably arranged on a sliding rail of the first base. A piston rod of the first driving cylinder is connected with the first slider.

[0014] A contraction connecting piece is connected with the first slider at one end and is connected with a second end of the first C-shaped section at the other end.

[0015] Optionally, the first C-shaped section comprises a first C-shaped groove, the second C-shaped section comprises a second C-shaped groove, the first C-shaped groove and the second C-shaped groove are butted along the circumference of the C-shaped ring to form a C-shaped limiting groove, and at least part of the steel ring is limited in the C-shaped limiting groove.

[0016] Optionally, a rotating seat and a support are provided on the second base, a first rotating shaft is arranged in the rotating seat, one end of the first rotating shaft is rotatably connected with the rotating seat, the other end of the first rotating shaft is connected with a first end of the first C-shaped section, and the second C-shaped section is arranged on the support.

[0017] Optionally, the steel ring fixing device further comprises a shaping assembly, the shaping assembly comprises:

[0018] A pushing cylinder is provided, and an output end of the pushing cylinder is provided with a first mounting seat.

[0019] A shaping cylinder is arranged on the first mounting seat, and an output end of the shaping cylinder is provided with a second mounting seat.

[0020] A first lifting cylinder is arranged on the second mounting seat, and an output end of the first lifting cylinder is provided with a shaping jig.

[0021] Optionally, the shaping jig comprises a first shaping plate and a second shaping plate which are perpendicular to each other, and the first shaping plate and the second shaping plate can respectively abut against a side wall and a bottom wall of the steel ring.

[0022] Optionally, the shaping assembly further comprises a first fastener and a second fastener, the first mounting seat is provided with a first mounting hole and an arc-shaped hole, the first fastener is threadedly connected with a cylinder body of the shaping cylinder by being arranged through the first mounting hole, and the second fastener is threadedly connected with the cylinder body of the shaping cylinder by being arranged through the arc-shaped hole.

[0023] Optionally, the steel ring fixing device further comprises a steel ring taking and placing assembly, and the steel ring taking and placing assembly comprises:

[0024] A third base;

[0025] A rotating and lifting assembly is arranged on the third base.

[0026] A clamping assembly is arranged on the output end of the rotating lifting assembly, and the clamping assembly can clamp the steel ring.

[0027] Optionally, the rotating lifting assembly comprises:

[0028] A rotating driving motor is arranged on the third base;

[0029] A second rotating shaft is rotatably arranged on the third base, and a transmission assembly is arranged on the third base, wherein the input end of the transmission assembly is connected with the output end of the rotating driving motor, and the output end of the transmission assembly is connected with the second rotating shaft.

[0030] A lifting mounting plate is arranged on the end of the second rotating shaft away from the third base;

[0031] A second lifting cylinder is arranged on the lifting mounting plate, and the clamping assembly is arranged on the lifting end of the second lifting cylinder.

[0032] Optionally, the clamping assembly comprises:

[0033] Two clamping cantilevers are arranged at an angle on the lifting end of the second lifting cylinder;

[0034] Two clamping cylinders are arranged on each clamping cantilever, and the output end of each clamping cylinder is provided with a clamping jaw.

[0035] Beneficial effects:

[0036] The steel ring fixing device comprises a first base, a second base, a C-shaped ring and a first driving assembly, at least two positioning wheels are arranged on the first base, the C-shaped ring comprises a first C-shaped section and a second C-shaped section, the first end of the first C-shaped section is rotatably connected with the second base, the two positioning wheels can be respectively attached to the outer wall of the first C-shaped section, the second C-shaped section is fixed on the second base, the first driving assembly is arranged on the first base, the output end of the first driving assembly is connected with the second end of the first C-shaped section, and the first driving assembly drives the first C-shaped section to contract or reset along the radial direction of the C-shaped ring, so that the C-shaped ring supports the steel ring along the radial direction of the steel ring, and stable and uniform radial support force is provided for the steel ring, the stability of the steel ring is improved, the steel ring fixing device has simple structure, the manufacturing cost is reduced, the operation complexity is reduced, and the fixing efficiency of the steel ring is improved. BRIEF DESCRIPTION OF DRAWINGS

[0037] Figure 1 is a structural schematic view of the steel ring fixing device provided by the utility model;

[0038] Figure 2 is a structural schematic view of the C-shaped ring under a first visual angle provided by the utility model;

[0039] Figure 3 is a structural schematic view of the C-shaped ring under a second visual angle provided by the utility model;

[0040] Figure 4 is a structural schematic view of the shaping assembly provided by the utility model;

[0041] Figure 5 is a structural schematic view of the steel ring taking and placing assembly provided by the utility model.

[0042] In the drawings:

[0043] 100, first base; 110, positioning wheel; 120, positioning driving assembly; 121, positioning cylinder; 122, mounting block; 123, third rotating shaft; 130, sliding rail;

[0044] 200, second base; 210, rotating seat; 220, first rotating shaft; 230, support;

[0045] 300, C-shaped ring; 310, first C-shaped section; 311, first C-shaped groove; 320, second C-shaped section; 321, second C-shaped groove;

[0046] 400, first driving assembly; 410, first driving cylinder; 420, first sliding block; 430, contraction connecting piece;

[0047] 500, shaping assembly; 510, pushing cylinder; 520, shaping cylinder; 530, first lifting cylinder; 540, first mounting seat; 541, first mounting hole; 542, arc-shaped hole; 550, second mounting seat; 560, shaping jig; 561, first shaping plate; 562, second shaping plate;

[0048] 600, steel ring taking and placing assembly; 610, third base; 620, rotating lifting assembly; 621, rotating driving motor; 622, second rotating shaft; 623, transmission assembly; 6231, first gear; 6232, second gear; 624, lifting mounting plate; 625, second lifting cylinder; 630, clamping assembly; 631, clamp cantilever; 632, clamping cylinder; 633, clamping jaw. DETAILED DESCRIPTION

[0049] The utility model will be further explained in detail in combination with the drawings and embodiments. It can be understood that the specific embodiments described here are only used to explain the utility model, and not limit the utility model. In addition, it should be noted that in order to facilitate the description, only the part related to the utility model is shown in the drawings, not all structures.

[0050] In the description of the utility model, unless another definite provision and limitation, the term "link", "connect", "fix" should be broad sense understanding, for example, can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be two elements internal communication or two element mutual action relationship.For the ordinary skilled in the art, the specific meaning of the above-mentioned terms in the utility model can be understood according to the specific circumstances.

[0051] In the utility model, unless another definite provision and limitation, the first feature is "on" or "under" the second feature can include the first and second features direct contact, also can include the first and second features are not direct contact but through the contact between other features between them.And, the first feature is "on", "above" and "on" the second feature includes the first feature is directly above and obliquely above the second feature, or just indicates that the first feature horizontal height is higher than the second feature.The first feature is "under", "below" and "under" the second feature includes the first feature is directly below and obliquely below the second feature, or just indicates that the first feature horizontal height is less than the second feature.

[0052] In the description of the embodiment, the orientation or position relationship of the terms "on", "under", "left", "right" and the like is based on the orientation or position relationship shown in the drawings, only for the convenience of description and simplification operation, and does not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, therefore cannot be understood as a limitation on the utility model.In addition, the terms "first", "second" are only used to distinguish in the description, and have no special meaning.

[0053] The embodiment provides a steel ring fixing device, such as Figures 1-5As shown, the steel ring fixing device comprises a first base 100, a second base 200, a C-shaped ring 300 and a first driving assembly 400, the first base 100 and the second base 200 are arranged at intervals, at least two positioning wheels 110 are arranged on the first base 100, and the two positioning wheels 110 can rotate freely; the C-shaped ring 300 comprises a first C-shaped section 310 and a second C-shaped section 320, the first end of the first C-shaped section 310 is rotationally connected with the second base 200, the second C-shaped section 320 is fixed on the second base 200, the first driving assembly 400 is arranged on the first base 100, and the output end of the first driving assembly 400 is connected with the second end of the first C-shaped section 310. When it is necessary to fix the steel ring, the first driving assembly 400 drives the first C-shaped section 310 to contract along the radial direction of the C-shaped ring 300, the steel ring is sleeved on the C-shaped ring 300, then the first driving assembly 400 drives the first C-shaped section 310 to reset along the radial direction of the C-shaped ring 300, so as to support the steel ring along the radial direction of the C-shaped ring 300, at this time, the two positioning wheels 110 are respectively attached to the outer wall of the first C-shaped section 310, and effective positioning and support are provided for the C-shaped ring 300 and the steel ring, so that the steel ring has higher stability.

[0054] The steel ring fixing device provided in the embodiment has simpler structure than the existing complex mechanical structure with multiple sets of inner supporting clamping jaws, has better support effect on the steel ring, avoids slippage or deformation of the steel ring, reduces manufacturing cost, reduces operation complexity and improves fixing efficiency of the steel ring.

[0055] It should be noted that, in order to ensure better support effect, the diameter of the C-shaped ring 300 is the same as the diameter of the steel ring to be fixed, so that the attachment between the C-shaped ring 300 and the steel ring is high, and uniform and stable radial support is ensured for the steel ring, thereby improving the fixing effect of the steel ring.

[0056] Optionally, as shown in Figure 2 and Figure 3 the first driving assembly 400 comprises a first driving cylinder 410, a first sliding block 420 and a contraction connecting piece 430, the first driving cylinder 410 is arranged on the first base 100, the first base 100 is provided with a sliding rail 130, the first sliding block 420 is slidingly arranged on the sliding rail 130, the piston rod of the first driving cylinder 410 is connected with the first sliding block 420, one end of the contraction connecting piece 430 is connected with the first sliding block 420, and the other end is connected with the second end of the first C-shaped section 310. The cooperation between the sliding rail 130 and the first sliding block 420 ensures the stability of the movement of the first sliding block 420, avoids the problem of uneven force of the contraction connecting piece 430 caused by shaking or deviation of the first sliding block 420, thereby ensuring the stability of the action of the first C-shaped section 310 along the radial direction, and the support force distribution on the steel ring is more uniform, thereby reducing the risk of deformation or slippage of the steel ring caused by uneven force.

[0057] Optionally, as shown in Figure 2 The first C-shaped section 310 comprises a first C-shaped groove 311, and the second C-shaped section 320 comprises a second C-shaped groove 321. The first C-shaped groove 311 and the second C-shaped groove 321 are butted along the circumference of the C-shaped ring 300 to form a C-shaped limiting groove. At least part of the steel ring is limited in the C-shaped limiting groove, which ensures that the steel ring will not slide axially or radially due to external force during the fixing process, effectively improving the stability and fixing effect of the steel ring.

[0058] Optionally, the second base 200 is provided with a rotating seat 210 and a support 230. The rotating seat 210 is provided with a first rotating shaft 220. One end of the first rotating shaft 220 is rotationally connected with the rotating seat 210, and the other end is connected with the first end of the first C-shaped section 310, so that the first C-shaped section 310 can flexibly rotate around the first rotating shaft 220, thereby realizing smooth radial contraction or resetting. The second C-shaped section 320 is arranged on the support 230, which provides stable support for the second C-shaped section 320 and disperses the radial load generated during the fixing of the steel ring, thereby reducing the risk of deformation and damage of the steel ring.

[0059] Optionally, as shown in Figure 3 The steel ring fixing device further comprises a positioning driving assembly 120. Each positioning wheel 110 is connected with the output end of one positioning driving assembly 120, and the positioning driving assembly 120 can make the positioning wheel 110 elastically contact with the outer wall of the first C-shaped section 310. Specifically, the first base 100 is provided with an oblong hole. The positioning driving assembly 120 comprises a positioning cylinder 121, a mounting block 122, an extension spring, and a third rotating shaft 123. The positioning cylinder 121 is arranged on the back of the first base 100. The mounting block 122 is connected with the piston rod of the positioning cylinder 121. One end of the extension spring is connected with the mounting block 122, and the other end is connected with the third rotating shaft 123. The third rotating shaft 123 is slidingly arranged in the oblong hole. The positioning wheel 110 is rotationally arranged on the third rotating shaft 123. The elastic action of the extension spring effectively buffers the contact force between the positioning wheel 110 and the steel ring, thereby avoiding damage to the surface of the steel ring caused by excessive contact pressure.

[0060] Optionally, as shown in Figure 4As shown, the rim fixing device further comprises a shaping assembly 500, which can shape the rim placed on the C-shaped ring 300 and improve the quality of the rim. Specifically, the shaping assembly 500 comprises a pushing cylinder 510, a shaping cylinder 520 and a first lifting cylinder 530. The output end of the pushing cylinder 510 is provided with a first mounting seat 540, the shaping cylinder 520 is arranged on the first mounting seat 540, the output end of the shaping cylinder 520 is provided with a second mounting seat 550, the first lifting cylinder 530 is arranged on the second mounting seat 550, and the output end of the first lifting cylinder 530 is provided with a shaping jig 560. The shaping jig 560 can be tightly combined with the rim, the shaping cylinder 520 can provide a radial pushing force for the rim, correct the circumferential shape of the rim, and eliminate the roundness error, and the first lifting cylinder 530 can provide an axial pushing force for the rim, adjust the height and end face flatness of the rim, and improve the flatness of the rim.

[0061] Optionally, as shown in Figure 4 The shaping jig 560 comprises a first shaping plate 561 and a second shaping plate 562 perpendicular to each other, and the first shaping plate 561 and the second shaping plate 562 can abut against the side wall and the bottom wall of the rim respectively, so that the rim can be uniformly and accurately adjusted in the radial and axial directions. Through the cooperation of the two shaping plates, the shape deviation of the rim can be effectively corrected. It should be noted that in the embodiment, when the first shaping plate 561 is in contact with the rim, the diameter of the rim is perpendicular to the first shaping plate 561, and the driving force direction of the shaping cylinder 520 is towards the center of the C-shaped ring 300, so as to improve the correction effect.

[0062] Optionally, the shaping assembly 500 further comprises a first fastener and a second fastener, as shown in Figure 4 The first mounting seat 540 is provided with a first mounting hole 541 and an arc-shaped hole 542, the first fastener is threadedly connected with the cylinder body of the shaping cylinder 520 through the first mounting hole 541, and the second fastener is threadedly connected with the cylinder body of the shaping cylinder 520 through the arc-shaped hole 542. When it is necessary to adjust the angle of the shaping jig 560, the first fastener and the second fastener are loosened, the cylinder body of the shaping cylinder 520 is rotated around the first fastener as the axis, the second fastener slides along the arc-shaped hole 542 during the adjustment process, and after the adjustment is completed, the first fastener and the second fastener are tightened, so as to ensure that the shaping jig 560 provides a radial pushing force for the rim.

[0063] In the embodiment, through the cooperation of the first fastener, the second fastener and the arc-shaped hole 542, the adaptability and flexibility of the shaping assembly 500 are improved, the shaping assembly 500 can provide an ideal shaping pushing force for rims of different specifications, so as to improve the production efficiency, reduce the operation complexity, and ensure the consistency and high quality of the shaping effect.

[0064] Optionally, as shown in Figure 5As shown, the rim fixing device further comprises a rim taking and placing assembly 600, the rim taking and placing assembly 600 comprising a third base 610, a rotary lifting assembly 620 arranged on the third base 610, and a clamping assembly 630 arranged on an output end of the rotary lifting assembly 620, the clamping assembly 630 being capable of clamping the rim, and the rotary lifting assembly 620 being capable of driving the clamping assembly 630 to rotate so as to place the rim to be processed on the C-shaped ring 300 or take the processed rim from the C-shaped ring 300, thereby reducing the labor intensity of manual work; and the clamping assembly 630 is capable of accurately clamping the rim and ensuring the taking and placing precision of the rim through cooperation of the rotary lifting assembly 620, thereby reducing human errors and ensuring smooth processing.

[0065] Optionally, the rotary lifting assembly 620 comprises a rotary driving motor 621, a second rotating shaft 622, and a transmission assembly 623, the rotary driving motor 621 being arranged on the third base 610, the second rotating shaft 622 being rotatably arranged on the third base 610, an input end of the transmission assembly 623 being connected with an output end of the rotary driving motor 621, an output end of the transmission assembly 623 being connected with the second rotating shaft 622, a lifting mounting plate 624 being arranged on an end of the second rotating shaft 622 away from the third base 610, a second lifting cylinder 625 being arranged on the lifting mounting plate 624, and the clamping assembly 630 being arranged on a lifting end of the second lifting cylinder 625. The rotary driving motor 621 drives the second rotating shaft 622 to rotate through the transmission assembly 623, so that the clamping assembly 630 rotates in the horizontal plane, and the clamping assembly 630 is aligned with the storage area or the processing area of the rim, and the rim is taken and placed through cooperation of the second lifting cylinder 625 and the clamping cylinder.

[0066] In this embodiment, the transmission assembly 623 comprises a gear set, the gear set comprising a first gear 6231 and a second gear 6232, the first gear 6231 being coaxially fixed with an output shaft of the rotary driving motor 621, and the second gear 6232 being coaxially fixed with the second rotating shaft 622, the first gear 6231 and the second gear 6232 being engaged for power transmission.

[0067] Optionally, the clamping assembly 630 comprises two clamp cantilevers 631 and two clamping cylinders 632, the two clamp cantilevers 631 being arranged at an angle on the lifting end of the second lifting cylinder 625, one clamping cylinder 632 being arranged on each clamp cantilever 631, and a clamping jaw 633 being arranged on an output end of each clamping cylinder 632; the double cantilever design balances the clamping force, further improving the stability during the grabbing process, and the clamping assembly 630 has a simple structure and is convenient to maintain.

[0068] Specifically, the operation process of the rim fixing device provided in this embodiment is as follows:

[0069] Raw material ring taking and placing: the first driving cylinder 410 extends, the driving sliding block slides along the sliding rail 130, the second end of the first C-shaped section 310 is folded to the center of the C-shaped ring 300 through the contraction connecting piece 430, the first end of the first C-shaped section 310 is rotated in the rotating seat 210 through the first rotating shaft 220, and the first C-shaped section 310 is in the contracted state. The rotary drive motor 621 works, the gear set drives the clamping assembly 630 to rotate to the storage position of the raw material ring, the second lifting cylinder 625 is lowered, the clamping cylinder 632 drives the clamping jaw 633 to work, the raw material ring is clamped, the second lifting cylinder 625 is lifted, the raw material ring is taken out from the raw material ring storage area, the rotary drive motor 621 works again, the gear set drives the clamping assembly 630 to rotate to the center of the C-shaped ring 300, at this time the clamping cylinder 632 drives the clamping jaw 633 to loosen, and the raw material ring is placed. After receiving the raw material ring placing signal, the first driving cylinder 410 is retracted, the driving sliding block drives the contraction connecting piece 430 to be reversely tensioned to the center of the C-shaped ring 300, at this time the C-shaped ring 300 is in the tensioned state. After receiving the signal, the pushing cylinder 510 drives the shaping cylinder 520 to extend, at this time the side edge of the shaping jig 560 on the first lifting cylinder 530 contacts the raw material ring and drives the raw material ring to be close to the center of the C-shaped ring 300, the raw material ring is shaped, and the shaping cylinder 520 is reset after the shaping is completed.

[0070] Finished product ring taking and placing: when the finished product ring is taken and placed, the first driving cylinder 410 extends, the driving sliding block drives the contraction connecting piece 430 to be folded to the center of the C-shaped ring 300, the first end of the first C-shaped section 310 is rotated in the rotating shaft seat through the rotating shaft, and the first C-shaped section 310 is in the contracted state. After receiving the signal, the pushing cylinder 510 drives the shaping cylinder 520 to extend, at this time the side edge and the bottom edge of the shaping jig 560 on the first lifting cylinder 530 contact the finished product ring, the first lifting cylinder 530 is upwardly lifted, and the shaping jig 560 drives the finished product ring to be upwardly separated from the C-shaped ring 300. The rotary drive motor 621 works, the gear set drives the clamp to rotate to the center of the C-shaped ring 300, the second lifting cylinder 625 is lowered, the clamping cylinder 632 drives the clamping jaw 633 to work, the finished product ring is clamped, the second lifting cylinder 625 is lifted, and the finished product ring is taken out from the center of the C-shaped ring 300, the rotary drive motor 621 works again, the gear set drives the clamp to rotate to the storage area of the finished product ring, the clamping cylinder 632 is driven, the clamping jaw 633 is loosened, and the finished product ring is placed into the finished product ring storage area.

[0071] The steel ring fixing device provided in the embodiment can automatically take out the steel ring from the raw material ring storage area and place the steel ring on the work station, complete positioning of the steel ring, take out the finished product ring from the work station, and place the finished product ring in the finished product ring storage area. By replacing the C-shaped ring 300 with different diameters, the steel ring working operation of different specifications and sizes can be met, the degree of automation is high, and the applicability is wide.

[0072] Obviously, the above embodiments of the present application are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. Here, it is not necessary and impossible to exhaust all the embodiments. Any modification, equivalent substitution and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application claims.

Claims

1. A stay device for a rim, characterized in that The application relates to a steel ring fixing device. The steel ring fixing device comprises a first base (100) and a second base (200), the first base (100) and the second base (200) are arranged at intervals, and at least two positioning wheels (110) are arranged on the first base (100). The steel ring fixing device further comprises a C-shaped ring (300), which comprises a first C-shaped section (310) and a second C-shaped section (320), the first end of the first C-shaped section (310) is rotationally connected with the second base (200), the two positioning wheels (110) can be attached to the outer wall of the first C-shaped section (310) respectively, and the second C-shaped section (320) is fixed on the second base (200). The steel ring fixing device further comprises a first driving assembly (400) arranged on the first base (100), the output end of the first driving assembly (400) is connected with the second end of the first C-shaped section (310), and the first driving assembly (400) is configured to drive the first C-shaped section (310) to contract or reset along the radial direction of the C-shaped ring (300), so that the C-shaped ring (300) supports the steel ring along the radial direction of the steel ring.

2. The grommet securing device of claim 1, wherein, The first driving assembly (400) comprises a first driving cylinder (410) arranged on the first base (100), a first sliding block (420), a slide rail (130) arranged on the first base (100), and the first sliding block (420) is slidingly arranged on the slide rail (130), and the piston rod of the first driving cylinder (410) is connected with the first sliding block (420). The first C-shaped section (310) comprises a first C-shaped groove (311), the second C-shaped section (320) comprises a second C-shaped groove (321), the first C-shaped groove (311) and the second C-shaped groove (321) are butted along the circumferential direction of the C-shaped ring (300) to form a C-shaped limiting groove, and at least part of the steel ring is limited in the C-shaped limiting groove. The second base (200) is provided with a rotating seat (210) and a support (230), the rotating seat (210) is provided with a first rotating shaft (220) arranged in the rotating seat (210), one end of the first rotating shaft (220) is rotationally connected with the rotating seat (210), the other end is connected with the first end of the first C-shaped section (310), and the second C-shaped section (320) is arranged on the support (230). The steel ring fixing device further comprises a shaping assembly (500), the shaping assembly (500) comprises a pushing cylinder (510), the output end of the pushing cylinder (510) is provided with a first mounting seat (540), a shaping cylinder (520) arranged on the first mounting seat (540), the output end of the shaping cylinder (520) is provided with a second mounting seat (550), and a first lifting cylinder (530) arranged on the second mounting seat (550), the output end of the first lifting cylinder (530) is provided with a shaping jig (560).

3. The grommet securing device of claim 1, wherein, ​ 4. The grommet securing device of claim 1, wherein, ​ 5. The grommet securing device of claim 1, wherein, ​ ​ ​ ​ 6. The grommet securing device of claim 5, wherein, The shaping tool (560) comprises a first shaping plate (561) and a second shaping plate (562) perpendicular to each other, and the first shaping plate (561) and the second shaping plate (562) can abut against the sidewall and the bottom wall of the rim, respectively.

7. The grommet securing device of claim 5, wherein, The shaping assembly (500) further comprises a first fastener and a second fastener, the first mounting seat (540) is provided with a first mounting hole (541) and an arc-shaped hole (542), the first fastener is threaded into the first mounting hole (541) and is screwed with the cylinder body of the shaping cylinder (520), and the second fastener is threaded into the arc-shaped hole (542) and is screwed with the cylinder body of the shaping cylinder (520).

8. The grommet securing device of claim 1, wherein, The rim fixing device further comprises a rim taking and placing assembly (600), the rim taking and placing assembly (600) comprises: a third base (610); a rotary lifting assembly (620) arranged on the third base (610); a clamping assembly (630) arranged on the output end of the rotary lifting assembly (620), the clamping assembly (630) can clamp the rim, and the rotary lifting assembly (620) can drive the clamping assembly (630) to rotate, so as to place the rim to be machined on the C-shaped rim (300) or take out the machined rim from the C-shaped rim (300).

9. The retainer device of claim 8, wherein, The rotary lifting assembly (620) comprises: a rotary drive motor (621) arranged on the third base (610); a second rotating shaft (622) and a transmission assembly (623), the second rotating shaft (622) is rotatably arranged on the third base (610), the input end of the transmission assembly (623) is connected with the output end of the rotary drive motor (621), and the output end of the transmission assembly (623) is connected with the second rotating shaft (622); a lifting mounting plate (624) arranged on one end of the second rotating shaft (622) away from the third base (610); a second lifting cylinder (625) arranged on the lifting mounting plate (624), and the clamping assembly (630) is arranged on the lifting end of the second lifting cylinder (625).

10. The grommet securing device of claim 9, wherein, The clamping assembly (630) comprises: two clamp cantilevers (631) arranged at an angle on the lifting end of the second lifting cylinder (625); two clamping cylinders (632), one clamping cylinder (632) is arranged on each clamp cantilever (631), and the output end of the clamping cylinder (632) is provided with a clamping jaw (633). The clamping assembly (630) comprises: two clamp cantilevers (631) arranged at an angle on the lifting end of the second lifting cylinder (625); two clamping cylinders (632), one clamping cylinder (632) is arranged on each clamp cantilever (631), and the output end of the clamping cylinder (632) is provided with a clamping jaw (633).

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