CN-224222624-U - Spring coiling device

Abstract

The application discloses a coil spring device which comprises a wire feeding mechanism, a forming wheel and a guide piece, wherein the wire feeding mechanism comprises a first wire pressing wheel set and a second wire pressing wheel set which are distributed along a first direction, wire feeding channels are formed in the first wire pressing wheel set and the second wire pressing wheel set respectively, the forming wheel is arranged at the output end of the wire feeding mechanism in a rotating mode, a wire groove is formed in the periphery of the forming wheel, the wire feeding mechanism is used for clamping and conveying a steel wire to the wire groove, the forming wheel can enable the steel wire to be spirally wound to form a spring, the guide piece is arranged between the wire feeding mechanism and the forming wheel, the guide piece is provided with two conveying channels, inlets of the two conveying channels are distributed along the first direction and are arranged in one-to-one correspondence with outlets of the two wire feeding channels, the outlets of the two conveying channels respectively correspond to different positions of the wire grooves, the guide piece comprises a body part and a hole cutter, the hole cutter is detachably arranged at the downstream end of the guide piece along the conveying direction of the steel wire, and the conveying channels penetrate through the body part and the hole cutter, and the two channels in the hole cutter are coplanar and are mutually parallel.

Inventors

• TAN ZHILIANG
• LI HUAGUI
• TAN ZHIMING

Assignees

• 广州市联柔机械设备有限公司

Dates

Publication Date

20260512

Application Date

20250521

Claims (18)

1. 1. A coil spring device is characterized by comprising The wire feeding mechanism comprises a first wire pressing wheel set and a second wire pressing wheel set which are distributed along a first direction, and wire feeding channels are respectively formed in the first wire pressing wheel set and the second wire pressing wheel set; The forming wheel is rotatably arranged at the output end of the wire feeding mechanism, a wire groove is formed in the periphery of the forming wheel, the wire feeding mechanism is used for clamping and conveying the steel wire to the wire groove, and the forming wheel can enable the steel wire to be spirally wound to form a spring; The guide piece is arranged between the wire feeding mechanism and the forming wheel, the guide piece is provided with two conveying channels, the inlets of the two conveying channels are distributed along a first direction and are arranged in one-to-one correspondence with the outlets of the two wire feeding channels, and the outlets of the two conveying channels are respectively corresponding to different positions of the wire groove; The guide piece comprises a body part and a hole cutter, the hole cutter is detachably arranged at the downstream end of the guide piece along the conveying direction of the steel wire, the conveying channel penetrates through the body part and the hole cutter, and two channels in the hole cutter are coplanar and are parallel to each other.
2. 2. The coil spring apparatus according to claim 1, wherein a set of main passages is provided in the hole cutter, a set of body passages is provided in the body portion, the main passages are provided in one-to-one correspondence with the body passages to form the conveying passages, a set of backup passages is provided in the hole cutter, the main passages and the backup passages are not communicated with each other, the mounting position between the hole cutter and the body portion is adjustable, and the body passages are communicated to either one of the main passages and the backup passages to form the conveying passages when the hole cutter is mounted to the body portion in different positions.
3. 3. The device of claim 2, wherein the primary channel and the backup channel are disposed in parallel, and inlet ends of the primary channel and the backup channel are located at opposite ends of the hole cutter.
4. 4. The device of claim 2, wherein the body passage has an aperture corresponding to the diameter of the wire being threaded, and the main passage has an aperture greater than or equal to the aperture of the body passage.
5. 5. The coil spring apparatus as set forth in any one of claims 1 to 4, wherein said hole cutter is constructed of cemented carbide steel, and wherein said hole cutter has a hardness greater than that of said body portion.
6. 6. The coil spring apparatus as set forth in any one of claims 1 to 4, wherein a wire sleeve is provided in said conveying passage in said body portion, said wire sleeve being provided in a cemented carbide steel structure.
7. 7. The coil spring apparatus as set forth in any one of claims 1 to 4, wherein said body portion includes first and second spaced apart portions, a space between said first and second portions defining a drain opening, said delivery passage extending through said first and second portions, or The body part and the hole cutters are arranged at intervals along the conveying direction of the steel wire, and a drain outlet is formed by an interval gap between the body part and the hole cutters.
8. 8. The coil spring apparatus according to any one of claims 1 to 4, wherein the first wire pressing wheel set comprises a first upper wire pressing wheel and a first lower wire pressing wheel which are arranged in pairs along a second direction, the first upper wire pressing wheel and the first lower wire pressing wheel rotate synchronously to clamp the steel wire for transportation along a third direction, the second wire pressing wheel set comprises a second upper wire pressing wheel and a second lower wire pressing wheel which are arranged in pairs along the second direction, the second upper wire pressing wheel and the second lower wire pressing wheel rotate synchronously to clamp another steel wire for transportation along the third direction, the first upper wire pressing wheel and the first upper wire pressing wheel are coaxially arranged, the second upper wire pressing wheel and the second lower wire pressing wheel are coaxially arranged, and the first upper wire pressing wheel and the rotating shaft of the first lower wire pressing wheel are parallel.
9. 9. The coil spring device of claim 8, wherein the rotating shaft of the second upper wire pressing wheel is sleeved on the periphery of the rotating shaft of the first upper wire pressing wheel, a movable gap is formed between the rotating shaft of the first upper wire pressing wheel and the rotating shaft of the second upper wire pressing wheel; The wire feeding mechanism further comprises a pressing assembly, and the pressing assembly alternatively presses the first upper wire pressing wheel or the second upper wire pressing wheel, so that one of the first wire pressing wheel set or the second wire pressing wheel set is close to each other to clamp and convey the steel wire.
10. 10. The coil spring apparatus as set forth in claim 9, wherein said hold-down assembly includes first and second hold-down drives disposed in a first direction, said first hold-down drive driving said first upper sheave toward said first lower sheave and said second hold-down drive driving said second upper sheave toward said second lower sheave.
11. 11. The spring coiling mechanism as recited in claim 10, wherein said hold-down assembly further comprises a first spring and a second spring, said first hold-down drive member is in elastic engagement with said first upper sheave via said first spring, said second hold-down drive member is in elastic engagement with said second upper sheave via said second spring, said first spring is configured to provide said first upper sheave with an elastic force away from said first lower sheave, and said second spring is configured to provide said second upper sheave with an elastic force away from said second lower sheave.
12. 12. The coil spring apparatus as set forth in claim 8, wherein a wire passing groove is provided on an outer peripheral side surface of at least one of the first upper wire pressing wheel and the first lower wire pressing wheel, a wire passing groove is provided on an outer peripheral side surface of at least one of the second upper wire pressing wheel and the second lower wire pressing wheel, the wire passing groove is used for passing a wire therethrough, and a cross-sectional shape of the wire passing groove includes a triangle shape or a circular arc shape.
13. 13. The coil spring assembly as set forth in any one of claims 1 to 4 wherein said forming wheel moves in a plane perpendicular to the axis to vary the distance between said wire channel and the outlet of said delivery channel to vary the waist diameter of the spring.
14. 14. The apparatus of claim 13, wherein the axis of the forming wheel is disposed in a first direction and the two outlets of the feed channel of the guide are disposed in a second direction.
15. 15. The apparatus of claim 13, wherein the axis of the forming wheel is perpendicular to the axes of rotation of the first and second sets of crimping rollers, and wherein the two outlets of the feed path of the guide are disposed in a first direction.
16. 16. The device of claim 1, wherein the device further comprises a frame, a swing rod, a connecting rod and a third driving member, the forming wheel is arranged on the swing rod, one end of the swing rod is arranged on the frame, the other end of the swing rod is connected with the connecting rod, and the third driving member is connected with the swing rod in a driving manner so as to drive the forming wheel to be close to or far away from the outlet of the conveying channel.
17. 17. The coil spring apparatus as set forth in any one of claims 1 to 4, further comprising a thimble disposed at a downstream end of said forming wheel in a conveying direction of the wire, said thimble being movable parallel to an axial direction of said forming wheel, said thimble being for pushing the wire to change a pitch of the spring during winding of the wire.
18. 18. The device of any one of claims 1 to 4, further comprising a cutting mechanism including a cutter disposed at an outlet of the guide member and a fourth driving member for driving the cutter to move or swing to cut the wire.

Description

Spring coiling device Technical Field The application relates to the technical field of spring manufacturing, in particular to a coil spring device. Background The coil spring device is used for spirally winding the steel wire to form a spring. Generally, a coil spring device feeds a wire using a wire feeding mechanism, the wire is fed to a forming wheel at a certain speed, and is wound at the forming wheel to form a spring. A guide member is generally arranged between the wire feeding mechanism and the forming wheel, the inlet of the guide member corresponds to the position of the wire feeding mechanism for outputting the steel wire, the outlet of the guide member corresponds to the groove of the forming wheel, and the distribution of conveying channels in the guide member is also various according to the relative positions of the wire feeding mechanism and the groove of the forming wheel. In the related art, the conveying channels are distributed in the guide in a straight line segment manner, and the steel wire passes through the conveying channels at a high speed and is fed into the grooves of the forming wheel, so that the steel wire is coiled into a spring and is cut off at the outlet of the guide, so that the inner wall of the conveying channels and the outlet of the conveying channels are extremely easy to wear, the guide needs to be replaced periodically, and high maintenance cost is generated. Disclosure of utility model In order to solve at least one of the above technical problems, the present application provides a coil spring device, which can improve the service life of a guide member and reduce the maintenance cost. The coil spring device comprises a wire feeding mechanism, a forming wheel and a guide piece, wherein the wire feeding mechanism comprises a first wire pressing wheel set and a second wire pressing wheel set which are distributed along a first direction, wire feeding channels are respectively formed in the first wire pressing wheel set and the second wire pressing wheel set, the forming wheel is arranged at the output end of the wire feeding mechanism in a rotating mode, a wire groove is formed in the periphery of the forming wheel, the wire feeding mechanism is used for clamping and conveying steel wires to the wire groove, the forming wheel can enable the steel wires to be spirally wound to form a spring, the guide piece is arranged between the wire feeding mechanism and the forming wheel, the guide piece is provided with two conveying channels, inlets of the two conveying channels are distributed along the first direction and are arranged in one-to-one correspondence with outlets of the two wire feeding channels, the outlets of the two conveying channels respectively correspond to different positions of the wire groove, the guide piece comprises a body part and a hole knife, the hole knife is detachably arranged at the downstream end of the guide piece along the conveying direction of the steel wires, and the conveying channels penetrate through the body part and the hole and the two hole knives, and the two hole knives are arranged in parallel to each other. In some embodiments of the present application, a set of main channels is provided in the hole cutter, a set of body channels is provided in the body portion, the main channels are in one-to-one correspondence with the body channels to form the conveying channels, a set of standby channels are provided in the hole cutter, the main channels and the standby channels are not communicated with each other, the mounting positions between the hole cutter and the body portion are adjustable, and when the hole cutter is mounted to the body portion in different positions, the body channels can be communicated to any one of the main channels and the standby channels to form the conveying channels. In some embodiments of the present application, the main channel and the standby channel are disposed in parallel, and inlet ends of the main channel and the standby channel are located at opposite ends of the hole cutter, respectively. In some embodiments of the application, the aperture of the body passageway is adapted to the diameter of the penetrating wire, and the aperture of the main passageway is greater than or equal to the aperture of the body passageway. In certain embodiments of the present application, the hole cutter is provided in a cemented carbide steel structure, the hardness of the hole cutter being greater than the hardness of the body portion. In some embodiments of the application, a wire sleeve is arranged in the conveying channel in the body part, and the wire sleeve is arranged in a hard alloy steel structure. In some embodiments of the application, the body includes a first portion and a second portion spaced apart from each other, the spacing between the first portion and the second portion defining a drain, the delivery passage extending through the first portion and the second portion, or The body part and the