Spring coiling tool for clamp spring with special-shaped section

Abstract

The spring coiling tool comprises a material guiding part, a special-shaped material guiding groove is formed in the material guiding part, and the special-shaped material guiding groove is matched with a special-shaped clamp spring blank; the material rolling part is arranged at the discharging end of the material guiding part; the feeding pieces are arranged on the two sides of the material guiding piece / on the material guiding piece; the feeding piece comprises at least one feeding smooth wheel and at least one feeding grooved wheel or comprises at least two feeding smooth wheels; and the feeding piece is matched with the guiding piece to guide and convey the special-shaped clamp spring blank to the feeding end of the rolling piece. The clamp spring blank with the special-shaped section is rolled into the clamp spring through a specially-made spring rolling tool. Therefore, the clamp spring can be accurately matched with a clamp spring blank with a special-shaped section or a clamp spring with a special shape and meeting the production requirement, and the forming requirement and working condition of the clamp spring in a specific application scene are met.

Description

Technical Field

[0001] The invention relates to the technical field of retaining spring forming, and in particular to a coil spring tooling for retaining springs with special-shaped cross-sections. Background Art

[0002] In the field of circlip manufacturing, the existing circlip cross-section is mainly circular or rectangular. In the manufacturing process, conventional coil spring tooling is usually used for processing. This traditional manufacturing method has certain stability and maturity based on the characteristics of its material shape and tooling, and can meet basic production needs in many conventional application scenarios. Its working principle is to apply a certain force and movement to the circular or rectangular material through the conventional coil spring tooling, so that it is curled and formed in a preset way.

[0003] However, in some specific application scenarios, such as the special application field of gearboxes, in order to more accurately match the shape of the counterpart to achieve better assembly effects and functional requirements, some circlips with special cross-sectional shapes are required. The shapes of these circlips with special cross-sectional shapes may be more complex and diverse, no longer limited to traditional round or rectangular shapes.

[0004] However, existing conventional coil spring tooling has obvious shortcomings when facing the demand for manufacturing circlips with special cross-sectional shapes. Since the structure and working mode of conventional tooling are designed for round or rectangular materials, they cannot adapt to the characteristics and processing requirements of materials with special cross-sectional shapes. When using conventional coil spring tooling to process special-shaped cross-sectional materials, it is impossible to effectively coil the material according to the required shape and size, resulting in the inability to manufacture circlips that meet the requirements. This not only limits the use of circlips in special application scenarios, but also affects the performance and reliability of related products. Summary of the invention

[0005] The purpose of the present invention is to provide a spring coiling tool for a special-section retaining spring, which solves the pain points of spring coiling processing for special-section retaining springs in the prior art.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is: The present invention provides a coil spring tooling for a special-shaped cross-section retaining spring, comprising: A material guide piece; a special-shaped material guide groove is arranged inside the material guide piece, and the special-shaped material guide groove is adapted to the special-shaped retaining spring blank; A coiled material member, the coiled material member being arranged at a material discharge end of the material guide member; A feeding member, the feeding member is arranged on both sides of the material guide member / on the material guide member; the feeding member includes at least one feeding light wheel and at least one feeding groove wheel or includes at least two feeding light wheels; The feeding member cooperates with the guide member to guide and transport the special-shaped retaining spring blank to the feeding end of the coil member.

[0007] Further, the material guide member includes at least one first guide groove plate, at least one second guide groove plate and at least one third guide groove plate which are separated from each other; the first guide groove plate is arranged close to the feeding end of the coil; the second guide groove plate is arranged between the first guide groove plate and the third guide groove plate; the third guide groove plate is arranged away from the feeding end of the coil.

[0008] Furthermore, a first special-shaped groove for the special-shaped retaining ring blank to pass through is formed on a side of the first guide groove plate; and an inner diameter of the first special-shaped groove is adapted to an outer diameter of the special-shaped retaining ring blank.

[0009] Furthermore, a second special-shaped groove for the special-shaped retaining ring blank to pass through is formed on the second guide groove plate; and the inner diameter of the second special-shaped groove is adapted to the outer diameter of the special-shaped retaining ring blank.

[0010] Furthermore, the third guide groove plate is provided with a third special-shaped groove for the special-shaped retaining ring blank to pass through; the inner diameter of the third special-shaped groove is adapted to the outer diameter of the special-shaped retaining ring blank.

[0011] Furthermore, the coiled part includes a first top spring wheel and a second top spring wheel, the first top spring wheel is arranged on the lower end surface of the special-shaped retaining spring blank, and the second top spring wheel is arranged on the upper end surface of the special-shaped retaining spring blank.

[0012] Furthermore, the first top spring wheel is provided with a first coil spring groove for coiling and forming the special-shaped retaining spring blank, and the second top spring wheel is provided with a second coil spring groove for coiling and forming the special-shaped retaining spring blank.

[0013] Furthermore, a slot width of the first coil spring slot is greater than a slot width of the second coil spring slot.

[0014] Furthermore, a receiving groove is provided on the material guiding member to accommodate the material feeding member, and the receiving groove is provided on the upper end surface of the material guiding member or the side surface of the material guiding member.

[0015] Furthermore, a circle of protrusions is arranged on the feeding smooth wheel, and a circle of feeding grooves is opened on the feeding groove wheel.

[0016] Due to the application of the above technical solution, the present invention has the following advantages compared with the prior art: The present invention is aimed at the circlip blank with a special cross-section, and the circlip blank with a special cross-section is rolled into a circlip by a special spring rolling tool. Thus, it can be accurately adapted to the circlip blank with a special cross-section or the circlip with special production requirements, and meet the molding requirements and working conditions of the circlip in specific application scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Hereinafter, some specific embodiments of the present invention will be described in detail in an exemplary and non-limiting manner with reference to the accompanying drawings. The same reference numerals in the accompanying drawings indicate the same or similar components or parts. It should be understood by those skilled in the art that these drawings are not necessarily drawn to scale. In the accompanying drawings: Figure 1 It is a structural schematic diagram of a coil spring tooling for a special-section retaining spring provided in the present invention; Figure 2 It is a structural schematic diagram of the first guide slot plate provided in the present invention; Figure 3 It is a structural schematic diagram of the second guide slot plate provided in the present invention; Figure 4 It is a schematic structural diagram of the third guide slot plate provided in the present invention; Figure 5 It is a structural schematic diagram of the first top spring wheel provided in the present invention; Figure 6 It is a structural schematic diagram of the second top spring wheel provided in the present invention; Figure 7 It is a structural schematic diagram of the feeding light wheel provided in the present invention; Figure 8 It is a structural schematic diagram of the feeding groove wheel provided in the present invention; Fig. 9 It is a structural schematic diagram of the feeding smooth wheel and the feeding groove wheel provided in the present invention in combination; Fig.10 It is a schematic diagram of forming a coil spring provided in the present invention; The reference numerals are as follows: 1. Material guide; 101. First guide groove plate; 1010. First special-shaped groove; 102. Second guide groove plate; 1020. Second special-shaped groove; 103. Third guide groove plate; 1030. Third special-shaped groove; 2. Material coiling member; 201. First top spring wheel; 2010. First coil spring groove; 2011. First top spring sub-wheel I; 2012. First top spring sub-wheel II; 202. Second top spring wheel; 2020. Second coil spring groove; 2021. Second top spring sub-wheel I; 2022. Second top spring sub-wheel II; 2023. Second top spring sub-wheel III; 3. Material feeding member; 301. Material feeding light wheel; 3010. Protrusion; 302. Material feeding groove wheel; 3020. Material feeding groove. DETAILED DESCRIPTION

[0018] The technical solution of the present invention will be described clearly and completely below in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] See also Figure 1 In an embodiment of the present invention, a spring coiling tool for a special-section retaining spring is provided, and the spring coiling tool for a special-section retaining spring includes a material guide 1, a material coiling component 2 and a material feeding component 3.

[0020] Specifically, the coil member 2 is arranged at the discharge end of the guide member 1. The feed member 3 is arranged on both sides of the guide member 1 and cooperates with the guide member 1 to guide and transport the special-shaped retaining ring blank to the feed end of the coil member 2.

[0021] With respect to the aforementioned material guide member 1, a special-shaped material guide groove is provided thereon, so as to enhance the corresponding guiding and limiting effect for the special-shaped retaining spring blank. Figure 1 as well as Figures 2 to 4 The material guide member 1 includes at least one first guide groove plate 101, at least one second guide groove plate 102 and at least one third guide groove plate 103 which are separated from each other. The first guide groove plate 101, the second guide groove plate 102 and the third guide groove plate 103 cooperate to provide guidance for the special-shaped retaining spring blank to prevent the special-shaped retaining spring blank from deflecting or moving during the coiling operation, thereby affecting the production effect and reducing the product yield. Of course, the first guide groove plate 101, the second guide groove plate 102 and the third guide groove plate 103 can also be arranged to be connected as one piece to form an integrated material guide member 1.

[0022] The aforementioned first guide groove plate 101 is arranged close to the feed end of the aforementioned coil 2; the aforementioned second guide groove plate 102 is arranged between the first guide groove plate 101 and the third guide groove plate 103; the third guide groove plate 103 is arranged away from the feed end of the aforementioned coil 2, that is, it is arranged at the feed end of the special-shaped retaining ring blank. In addition, the number of the first guide groove plate 101, the second guide groove plate 102 and the third guide groove plate 103 is arranged according to the actual production needs, and can be specifically measured according to the size and mass of the special-shaped retaining ring blank. Moreover, the arrangement positions of the above-mentioned first guide groove plate 101, the second guide groove plate 102 and the third guide groove plate 103 are not limited to the arrangement methods disclosed in the above embodiments of the present invention, and other arrangement methods that can reasonably play a role in stabilizing the position limiting and guiding the special-shaped retaining ring blank are all acceptable.

[0023] In the embodiment of the present invention, a first special-shaped groove 1010 is provided on the side of the first guide groove plate 101 for the special-shaped retaining spring blank to pass through, and the inner diameter of the first special-shaped groove 1010 matches the outer diameter of the special-shaped retaining spring blank. In the embodiment of the present invention, a second special-shaped groove 1020 and a third special-shaped groove 1030 are provided on the second guide groove plate 102 and the third guide groove plate 103 for the special-shaped retaining spring blank to pass through, and the inner diameters of the second special-shaped groove 1020 and the third special-shaped groove 1030 also match the outer diameter of the special-shaped retaining spring blank. In addition, the special-shaped grooves arranged in the embodiment of the present invention are special-shaped, and the inner wall of the special-shaped groove can block and limit the special-shaped retaining spring blank, thereby preventing the blank from sliding or falling off during feeding or processing.

[0024] Specifically, the upper ends of the second guide groove plate 102 and the third guide groove plate 103 are provided with special-shaped grooves, which are intended to achieve a stable limiting effect on both sides of the special-shaped retaining spring blank placed in the grooves, and prevent the special-shaped retaining spring blank from deflecting in the two sides perpendicular to its traveling direction. In addition, in the embodiment of the present invention, the side edges of the first guide groove plate 101 are provided with special-shaped grooves, which are intended to limit the upper and lower end surfaces of the special-shaped retaining spring blank placed in the grooves, and prevent the special-shaped retaining spring blank from deflecting in the upper and lower sides during the traveling process.

[0025] And since the inner diameters of the aforementioned first special-shaped groove 1010, the second special-shaped groove 1020 and the third special-shaped groove 1030 are all adapted to the outer diameter of the special-shaped retaining ring blank, each special-shaped groove can ensure that the position of the special-shaped retaining ring blank will not be deflected during the process of the special-shaped retaining ring blank moving toward the feed end of the coil 2, and always maintain the established guide route, thereby providing assistance for subsequent coiling operations.

[0026] In addition, for the material of the first guide groove plate 101, the second guide groove plate 102 and the third guide groove plate 103, in the embodiment of the present invention, Cr12MoV material with good hardness, strength, toughness and wear resistance is selected to ensure that it can stably withstand the force during the processing during long-term use.

[0027] For the aforementioned coil 2, see Figure 1 , Figure 5 and Figure 6, which is intended to roll the received special-shaped circlip blank into a coil spring of the required size. Specifically, the coil piece 2 includes a first top spring wheel 201 and a second top spring wheel 202. The first top spring wheel 201 is arranged at the lower end of the special-shaped circlip blank, and the second top spring wheel 202 is arranged at the upper end of the special-shaped circlip blank. The special-shaped circlip blank is rolled by the first top spring wheel 201 and the second top spring wheel 202 to form a circle. At the same time, the radius of the required coil spring can be adjusted by adjusting the relative positions of the first top spring wheel 201 and the second top spring wheel 202 near the discharge end of the coil piece 2. The specific adjustment strength is reasonably adjusted according to actual production needs.

[0028] In the embodiment of the present invention, a first coil spring groove 2010 for forming a special-shaped retaining spring blank is provided on the first top spring wheel 201, and a second coil spring groove 2020 is provided on the second top spring wheel 202. The special-shaped retaining spring blank is limitedly coiled by means of the first coil spring groove 2010 and the second coil spring groove 2020. In addition, since the retaining spring blank is of a special shape, in the embodiment of the present invention, the groove width of the first coil spring groove 2010 is greater than the groove width of the second coil spring groove 2020, so as to match the special-shaped retaining spring blank, clamp it, and ensure the coiling quality.

[0029] In addition, regarding the material selection of the first top spring wheel 201 and the second top spring wheel 202, in the embodiment of the present invention, GCr15 material is selected. This material has good mechanical properties, moderate hardness and strength, good toughness, and also has certain price advantages.

[0030] The aforementioned feeding member 3 is arranged on both sides of the material guide member 1 or on the material guide member 1, and cooperates with the material guide member 1 to guide and transport the special-shaped retaining ring blank to the feeding end of the coil member 2. When the feeding member 3 is arranged on the material guide member 1, in order to stabilize the feeding member 3, in the embodiment of the present invention, a receiving groove is opened on the side of the material guide member 1 to accommodate the feeding member 3, and then cooperates with the material guide member 1 to feed. Of course, the depth of the opening of the above-mentioned receiving groove on the side of the material guide member 1 can be reasonably arranged according to needs, as long as it can ensure that the feeding member 3 can abut against the special-shaped retaining ring blank.

[0031] Specifically, see Figure 1 , Figure 7 and Figure 8 The feeding member 3 includes at least one feeding wheel 301 and at least one feeding groove wheel 302 or at least two feeding wheels 301. The feeding wheel 301 and the feeding groove wheel 302 or the two feeding wheels 301 cooperate with each other and, with the help of an external driving device, clamp the special-shaped retaining ring blank and realize feeding. Fig. 9The feed wheel 301 is provided with a circle of protrusions 3010, and the feed groove wheel 302 is provided with a circle of feed grooves 3020. The protrusions 3010 and the feed grooves 3020 are combined to clamp the special-shaped retaining ring blank to prevent deflection or falling during movement. In addition, the upper and lower parts of the feed groove 3020 can also limit the upward and downward movement of the blank. The feed wheel 301 and the feed groove wheel 302 are both made of Cr12 material, which has good hardness, strength, toughness and wear resistance, and can ensure the force stability during the processing process.

[0032] In fact, more specifically, the protrusion 3010 arranged on the aforementioned feeding light wheel 301 and the feeding groove 3020 opened on the feeding groove wheel 302 cooperate with the first special-shaped groove 1010 opened on the aforementioned first guide groove plate 101, the second special-shaped groove 1020 opened on the second guide groove plate 102, and the first special-shaped groove 1030 opened on the third guide groove plate 103 to ensure that the special-shaped retaining ring blank will not deflect and maintain continuous movement during the process of moving toward the feeding end of the coil 2.

[0033] For specific rolling, refer to Figure 1 and Fig.10 First, the head of the special-shaped retaining spring blank is fed into the tooling through the feed end of the special-shaped groove opened on the third guide groove plate 103, and then successively passes through the second guide groove plate 102 and the first guide groove plate 101, and with the help of the feeding piece 3 and the external driving device, the special-shaped coil spring blank moves toward the coiling piece 2. When the special-shaped retaining spring blank enters the operating range of the coil 2, the first top spring wheel I2011 located at the lower end of the special-shaped retaining spring blank will provide an upward force to the special-shaped retaining spring blank, and the first top spring wheel II2012 located on the right side of the first top spring wheel I2011 will provide a corresponding curling force to the special-shaped retaining spring blank; the second top spring wheel I2021 and the second top spring wheel II2022 located at the upper end of the special-shaped retaining spring blank cooperate with the aforementioned first top spring wheel I2011 to clamp the special-shaped retaining spring blank and the second top spring wheel III2023 located on the far right will provide a downward adjusting force to the special-shaped retaining spring blank.

[0034] By adjusting the up-down and left-right positions of the first top spring wheel II 2012 and the second top spring wheel III 2023 located on the far right, the angle and radius of the spring can be adjusted to realize the spring winding operation and form a circle.

[0035] In summary, the spring coiling tool for a special-shaped cross-section spring disclosed in the present invention rolls a spring blank with a special cross-section into a spring through a special spring coiling tool. In this way, it can be precisely adapted to the spring blank with a special cross-section or the spring with special production requirements, meeting the forming requirements and working conditions of the spring in specific application scenarios. The various special-shaped grooves and coiling grooves disclosed in the present invention are all adapted to the outer diameter of the special-shaped spring blank, and in the process from the spring feeding to the spring coiling forming, a stable guiding and limiting effect is always maintained to ensure the spring coiling forming effect and improve the product yield.

[0036] The above embodiments are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with this technology to understand the contents of the present invention and implement them accordingly. They cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A coil spring tooling for a special-shaped cross-section retaining spring, characterized in that: include: A material guide piece (1), wherein a special-shaped material guide groove is arranged inside the material guide piece (1), and the special-shaped material guide groove is adapted to the special-shaped retaining spring blank; A material coil (2), the material coil (2) being arranged at a material discharge end of the material guide (1); A feeding member (3), the feeding member (3) being arranged on both sides of the material guide member (1) / on the material guide member (1); the feeding member (3) comprises at least one feeding light wheel (301) and at least one feeding groove wheel (302) or comprises at least two feeding light wheels (301); The feeding member (3) cooperates with the material guiding member (1) to guide and convey the special-shaped retaining spring blank to the feeding end of the coil member (2).

2. A coil spring tooling for a special-section retaining spring according to claim 1, characterized in that: The material guiding member (1) comprises at least one first guide groove plate (101), at least one second guide groove plate (102) and at least one third guide groove plate (103) which are separated from each other; The first guide groove plate (101) is arranged close to the feeding end of the coiled material (2); The second guide groove plate (102) is arranged between the first guide groove plate (101) and the third guide groove plate (103); The third guide groove plate (103) is arranged away from the feeding end of the coiled material (2).

3. A coil spring tooling for a special-section retaining spring according to claim 2, characterized in that: A first special-shaped groove (1010) is provided on the side of the first guide groove plate (101) for the special-shaped retaining ring blank to pass through; the inner diameter of the first special-shaped groove (1010) is adapted to the outer diameter of the special-shaped retaining ring blank.

4. The coil spring tooling for a special-section retaining spring according to claim 2, characterized in that: The second guide groove plate (102) is provided with a second special-shaped groove (1020) for the special-shaped retaining ring blank to pass through; the inner diameter of the second special-shaped groove (1020) is adapted to the outer diameter of the special-shaped retaining ring blank.

5. The coil spring tooling for a special-section retaining spring according to claim 2, characterized in that: The third guide groove plate (103) is provided with a third special-shaped groove (1030) for the special-shaped retaining ring blank to pass through; the inner diameter of the third special-shaped groove (1030) is adapted to the outer diameter of the special-shaped retaining ring blank.

6. The coil spring tooling for a special-section retaining spring according to claim 1, characterized in that: The coiled material (2) comprises a first top spring wheel (201) and a second top spring wheel (202); the first top spring wheel (201) is arranged on the lower end surface of the special-shaped retaining spring blank, and the second top spring wheel (202) is arranged on the upper end surface of the special-shaped retaining spring blank.

7. A coil spring tooling for a special-section retaining spring according to claim 6, characterized in that: The first top spring wheel (201) is provided with a first coil spring groove (2010) for coiling the special-shaped retaining spring blank, and the second top spring wheel (202) is provided with a second coil spring groove (220) for coiling the special-shaped retaining spring blank.

8. The coil spring tooling for a special-section retaining spring according to claim 7, characterized in that: The slot width of the first coil spring slot (2010) is greater than the slot width of the second coil spring slot (2020).

9. The coil spring tooling for a special-section retaining spring according to claim 1, characterized in that: The material guide member (1) is provided with a receiving groove for accommodating the material feeding member (3); the receiving groove is provided on the upper end surface of the material guide member (1) or on the side surface of the material guide member (1).

10. The coil spring tooling for a special-section retaining spring according to claim 1, characterized in that: The feeding smooth wheel (301) is provided with a circle of protrusions (3010), and the feeding groove wheel (302) is provided with a circle of feeding grooves (3020).

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