A rope embroidery device

Abstract

This utility model discloses a rope embroidery device, including a mounting frame, a rope feeder mounted on the mounting frame, a rope feeder swing arm structure, and a looper head. The rope feeder includes a rope feeder frame, a pair of mating first rope feeder wheels and second rope feeder wheels mounted on the rope feeder frame, a driver for rotating the first rope feeder wheel, a first swing arm on the rope feeder frame, a pivot shaft of the first swing arm mounted on the rope feeder frame and / or the mounting frame, a second rope feeder wheel on the first swing arm, and an elastic body on the first swing arm for pressing the second rope feeder wheel against the first rope feeder wheel. In this utility model, the first swing arm on the rope feeder frame, the second rope feeder wheel on the first swing arm, the pivot shaft of the first swing arm mounted on the rope feeder frame and / or the mounting frame, and the elastic body on the first swing arm for pressing the second rope feeder wheel against the first rope feeder wheel—the rope feed is achieved by controlling the second rope feeder wheel to press against the first rope feeder wheel through the swing of the first swing arm and the elastic body. The pivot shaft of the first swing arm can more easily maintain the accuracy of the second rope feeder wheel, resulting in low maintenance costs.

Description

Technical Field

[0001] This utility model relates to a rope embroidery device. Background Technology

[0002] The cord feeder and looper are key components of a cord embroidery machine, used in conjunction with the machine needle for cord embroidery operations. The cord feeder requires a pair of cord feed rollers to continuously deliver cord while maintaining sufficient tension for cord embroidery. One cord feed roller slidably engages with a fixed cord feed roller via two guide rails at both ends of an axle. These guide rails also have a driving force to press the sliding cord feed roller against the fixed roller, compressing the cord. This structure requires high precision in the production and installation of the two guide rails, as well as consistent spring force to ensure the sliding roller smoothly presses against the fixed roller. However, with use and wear, the springs on the guide rails, limited by the precision of the guide rails and springs, may not always effectively drive the sliding roller against the fixed roller. This cord feeder has relatively high production and maintenance costs.

[0003] During the rope embroidery process, the looper head needs to rotate at high speed according to the pattern requirements while outputting the rope.

[0004] Existing loop-forming head structures typically mount bearings on the connecting plate of the rope feeding device, driving its rotation via a drive belt. For example, existing loop-forming head drive shafts only have bearings on the upper or lower side of the driven pulley. Because the loop-forming head needs an internal cavity for the needle to pass through, the outer diameter of its drive shaft and the mounted bearings is limited, resulting in smaller bearing sizes and thinner bearing walls. Furthermore, the drive belt usually applies driving force from only one side of the bearing, causing an angle between the bearing's force direction and its preset optimal radial force direction, leading to uneven force distribution. Under high-speed operation of the loop-forming head, the single-bearing structure is prone to premature damage due to uneven loading, requiring frequent downtime for replacement, increasing maintenance costs and impacting production efficiency. Utility Model Content

[0005] This invention addresses the problems of high cost of the rope feeder and easy damage to the bearings in existing rope embroidery devices by providing a rope embroidery device that optimizes the installation structure of the rope feeder and bearings and extends the service life of the bearings.

[0006] The technical solution of this utility model to solve the existing problems is: a rope embroidery device, including a mounting frame, a rope feeder set on the mounting frame, a rope feeder swing arm structure, and a loop head. The rope feeder includes a rope feeder frame, a pair of cooperating first rope feeder wheels and second rope feeder wheels installed on the rope feeder frame, and the first rope feeder wheel is provided with a driver to drive the rope feeder wheel to rotate. As an improvement, the rope feeder frame is provided with a first swing arm, and the rotating shaft of the first swing arm is installed on the rope feeder frame and / or the mounting frame. The second rope feeder wheel is set on the first swing arm, and the first swing arm is provided with an elastic body that makes the second rope feeder wheel press against the first rope feeder wheel.

[0007] As a further improvement, the elastic body is a torsion spring disposed on the first rocker arm.

[0008] As a further improvement, the driver is a first drive motor mounted on the rope feeding frame or mounting bracket.

[0009] As a further improvement, the mounting bracket is provided with a connecting plate, the ringing head is set on the connecting plate, the drive shaft of the ringing head is provided with a driven pulley, a transmission belt is provided between the driven pulley and the drive pulley, the ringing head is equipped with bearings on both axial sides of the driven pulley, and the connecting plate is provided with mounting holes that mate with the outer rings of the two bearings on both axial sides of the driven pulley.

[0010] As a further improvement, the drive shaft of the ring-forming head is either integrated with or separate from the ring-forming head.

[0011] As a further improvement, the connecting plate is provided with a mounting groove for mounting a transmission belt at the passive pulley.

[0012] Compared with the prior art, this utility model has a first swing arm on the rope feeding frame, a second rope feeding wheel on the first swing arm, and the pivot of the first swing arm is mounted on the rope feeding frame and / or mounting bracket. An elastic body is provided on the first swing arm to press the second rope feeding wheel against the first rope feeding wheel. Rope feeding is achieved by controlling the second rope feeding wheel to press against the first rope feeding wheel through the swing of the first swing arm and the elastic body. Its advantages are that the pivot of the first swing arm can more easily maintain the accuracy of the second rope feeding wheel, and there is basically no need for maintenance in the later stage, resulting in low overall cost.

[0013] Bearings are installed on both sides of the driven pulley at the ring head. The connecting plate has mounting holes for these bearings to mate with the two bearings on either side of the driven pulley. The bearings on both sides of the driven pulley can evenly distribute the tension of the transmission belt. The specific effect is as follows: 1. Optimize stress distribution and extend service life: By symmetrically setting two bearings on both sides of the driven pulley along the axis, the radial force generated by the transmission belt is decomposed and borne by the two bearings together, which greatly improves the stress state of a single bearing. This allows the bearing to mainly bear its designed radial load, avoiding early failure caused by off-center loading, and thus significantly extending the service life of the bearing and even the entire ring head structure.

[0014] 2. Improved operational stability: The dual-bearing support structure enhances the rigidity of the drive shaft, reduces vibration and sway at high speeds, and makes the ring-forming head run more smoothly and reliably, which helps to improve the quality of rope embroidery.

[0015] 3. Reasonable structure and easy to implement: The structure is cleverly improved. It can be achieved by simply adding a bearing mounting hole to the existing connecting plate and selecting a standard bearing. The modification cost is low and it is easy to promote and apply on existing equipment. Attached Figure Description

[0016] Figure 1 This is a structural schematic diagram of the rope embroidery of this utility model.

[0017] Figure 2 This is a front view of the structure of the rope embroidery of this utility model.

[0018] Figure 3 yes Figure 2 A sectional view along the AA direction.

[0019] Figure 4 yes Figure 2 An enlarged schematic diagram of point a.

[0020] Figure 5 yes Figure 3 An enlarged schematic diagram of point b.

[0021] Figure 6 This is an enlarged schematic diagram of the rope feeder.

[0022] Figure 7 This is an exploded diagram of the rope output section of the rope embroidery.

[0023] In the diagram: 1. Mounting frame, 2. Rope feeder, 3. Looping head, 4. First swing arm, 5. Drive shaft, 6. Passive pulley, 7. Rope feeder swing arm structure, 11. First drive motor, 12. Connecting plate, 13. Bearing, 21. Rope feeder frame, 22. First rope feeder wheel, 23. Second rope feeder wheel, 61. Transmission belt, 62. Drive pulley, 63. Mounting groove. Detailed Implementation

[0024] See Figure 1-7In this embodiment, a rope embroidery device includes a mounting frame 1, a rope feeder 2 disposed on the mounting frame 1, a rope feeder swing arm structure 7, and a loop head 3. The rope feeder 2 includes a rope feeder frame 21 and a pair of cooperating first rope feeder wheels 22 and second rope feeder wheels 23 mounted on the rope feeder frame 21. The outer periphery of the first rope feeder wheel 22 is provided with elasticity, and the outer periphery of the second rope feeder wheel 23 is provided with conveying teeth.

[0025] The first rope-feeding wheel 22 is equipped with a driver to drive its rotation. The rope-feeding frame 21 is equipped with a first swing arm 4. The pivot of the first swing arm 4 is mounted on the rope-feeding frame 21 and / or the mounting bracket 1. The second rope-feeding wheel 23 is disposed on the first swing arm 4. The first swing arm 4 is equipped with an elastic body that causes the second rope-feeding wheel 23 to press against the first rope-feeding wheel 22. The elastic body can be a compression spring or a tension spring that drives the second rope-feeding wheel 23 to press against the first rope-feeding wheel 22. In this embodiment, preferably, the elastic body is a torsion spring disposed on the first swing arm 4. The torsion spring can be mounted on the pivot of the first swing arm 4. One elastic arm of the torsion spring is positioned on the mounting bracket and / or the rope-feeding frame 21, and the other elastic arm is positioned on the first swing arm 4. The torsion spring drives the first swing arm 4 to rotate around its pivot, causing the second rope-feeding wheel 23 to engage with the first rope-feeding wheel 22.

[0026] The driver is a first drive motor 11 mounted on the rope feeding frame 21 or the mounting bracket 1. The first drive motor 11 drives the first rope feeding wheel 22 to rotate and feed the rope according to the tension of the rope.

[0027] The mounting bracket 1 is equipped with a connecting plate 12, and the ring-forming head 3 is mounted on the connecting plate 12. A driven pulley 6 is mounted on the drive shaft 5 of the ring-forming head 3. A transmission belt 61 is provided between the driven pulley 6 and the drive pulley 62. Bearings 13 are mounted on both axial sides of the driven pulley 6 in the ring-forming head 3. The ring-forming head 3 and the drive shaft 5 are provided with receiving holes that can mate with the machine needle. The connecting plate 12 is provided with mounting holes that mate with the outer rings of the two bearings 13 on both axial sides of the driven pulley 6. When the drive pulley 62 drives the transmission belt 61 to drive the driven pulley 6 and the ring-forming head 3, the two bearings 13 on both axial sides of the driven pulley 6 can effectively balance the force on the driven pulley 6, allowing the two bearings to bear more purely radial force, parallel to the preset radial force of the bearings, making the bearing force more reasonable and effectively extending the bearing life.

[0028] The drive shaft 5 of the ring-forming head 3 is either integral with or separate from the ring-forming head 3.

[0029] The connecting plate 12 is provided with a mounting groove 63 for installing the transmission belt 61 at the passive pulley 6. The mounting groove 63 facilitates the installation of the transmission belt 61.

Claims

1. A rope embroidery device, comprising a mounting frame, a rope feeder disposed on the mounting frame, a rope feeder swing arm structure, and a looper head, wherein the rope feeder includes a rope feeder frame, a pair of cooperating first rope feeder wheels and second rope feeder wheels mounted on the rope feeder frame, wherein the first rope feeder wheel is provided with a driver for driving the rope feeder wheel to rotate, characterized in that: The rope feeding frame is provided with a first swing arm, the pivot of the first swing arm is mounted on the rope feeding frame and / or mounting frame, the second rope feeding wheel is disposed on the first swing arm, and the first swing arm is provided with an elastic body that presses the second rope feeding wheel against the first rope feeding wheel.

2. The rope embroidery device as described in claim 1, characterized in that: The elastic body is a torsion spring mounted on the first rocker arm.

3. The rope embroidery device as described in claim 1, characterized in that: The driver is a first drive motor mounted on the rope feeding frame or mounting bracket.

4. The rope embroidery device as described in claim 1, characterized in that: The mounting bracket is provided with a connecting plate, the ringing head is set on the connecting plate, the drive shaft of the ringing head is provided with a driven pulley, a transmission belt is provided between the driven pulley and the drive pulley, the ringing head is equipped with bearings on both axial sides of the driven pulley, and the connecting plate is provided with mounting holes that mate with the outer rings of the two bearings on both axial sides of the driven pulley.

5. The rope embroidery device as described in claim 4, characterized in that: The drive shaft of the ring-forming head is either integrated with or separate from the ring-forming head.

6. The rope embroidery device as described in claim 4, characterized in that: The connecting plate is provided with a mounting groove for installing a transmission belt at the passive pulley.

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