Pay-off device of overlock sewing machine

Abstract

The utility model relates to the technical field of overlock sewing machines, in particular to a pay-off device of an overlock sewing machine, which comprises a bottom plate and a frame rotatably mounted above the bottom plate, a central cylinder is fixedly mounted at the center of the top end of the frame, and each of two telescopic adjusting components comprises telescopic cylinders which extend out of the outer side wall of the frame in a telescopic sliding and penetrating manner and are arranged in parallel up and down; a motor drives a rotating shaft to drive a gear to rotate, so that an L-shaped rack is driven to linearly move towards the two sides in a meshed mode, then the whole telescopic adjusting assembly and an extrusion plate are pushed to expand outwards, cylindrical inner cavity line rollers of different inner diameter specifications can be rapidly mounted and dismounted, and the device preliminarily has the advantage of being convenient to use; through rotation of the telescopic rod and the extrusion plate and relative sliding of the telescopic rod and the telescopic cylinder, the extrusion plate inclines and is fully attached to the inner wall of the conical inner cavity line roller, installation and disassembly of the conical inner cavity line rollers with different inner diameter specifications can be rapidly completed, and the device further has the advantage of being convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of overlocking machines, in particular to a wire-releasing device of an overlocking machine. Background Art

[0002] The overlock machine, also known as the overlock machine, is generally divided into three-thread, four-thread, five-thread and other types. Its main function is generally to prevent the seams of clothing from pilling. The overlock machine generally needs to be used in conjunction with the pay-off device when in use, but the outer diameter of the traditional pay-off drum is fixed, so only the same model of winding drum can be inserted, which is inconvenient to use.

[0003] The Chinese utility model patent with the authorization announcement number "CN215439111 U" is specifically "a wire release device for an overlocking machine", which allows wire rollers of different specifications to be inserted and fixed by adjusting the position of the support rod;

[0004] The above-mentioned device adjusts the position of the support rod by rotating the fixing ring threadedly mounted on the slide rod, so that the fixing ring spirally descends to squeeze and resist the slip ring, and the descent of the slip ring is coordinated with the outward expansion of the two rocker arms. However, it is provided with two slip rings distributed upper and lower. The fixing ring spirally descends and can only squeeze and resist the slip ring located above, and the slip ring located below does not rise, so that the finally adjusted support rod and the slide rod have a certain inclination angle. Therefore, it can only adapt and adjust the wire roller with a conical inner cavity, while the actual inner cavity of the wire roller is mostly cylindrical in design. Therefore, the above-mentioned device cannot adapt and adjust the wire roller with a cylindrical inner cavity. Utility Model Content

[0005] In view of the above-mentioned shortcomings of the prior art, the utility model provides a wire-releasing device for an overlocking machine, which can effectively solve the problems raised in the background technology.

[0006] In order to achieve the above objectives, the present invention is implemented through the following technical solutions:

[0007] The utility model provides a wire-releasing device for an overlocking machine, comprising a bottom plate and a frame rotatably mounted above the bottom plate, a center tube being fixedly mounted at the top center of the frame, two telescopic adjustment components each comprising a telescopic tube that telescopically slides through and extends out of an outer side wall of the frame and is arranged in parallel up and down, telescopic rods being elastically plugged into one end of the telescopic tube away from the center tube, and the telescopic adjustment component also comprising an extrusion plate that is arranged outside the center tube and rotatably mounted with the corresponding two telescopic rods.

[0008] Furthermore, four screws distributed in a rectangular array are threadedly installed at four corners of the bottom plate.

[0009] Furthermore, a motor is installed in the frame, and a rotating shaft extending into the central tube is installed at the output end of the motor. Two gears are fixedly mounted on the outer shaft wall of the rotating shaft, and two L-shaped racks are meshed and installed on the outer ring walls of the gears.

[0010] Furthermore, the two L-shaped racks are symmetrically distributed about the corresponding gear, and the ends away from the corresponding gear are fixedly connected to the corresponding ends of the telescopic cylinders.

[0011] Furthermore, a socket is provided at one end of the telescopic tube away from the corresponding L-shaped rack, one end of the telescopic rod is adapted to be inserted into the corresponding socket, and a spring is installed between the socket.

[0012] Furthermore, a rubber strip is fixedly installed on one side of the extrusion plate away from the central tube, and a fixed block rotatably connected to the telescopic rod is fixedly installed on one side of the extrusion plate close to the central tube.

[0013] Furthermore, an outer wall of the telescopic tube penetrates through the inner cavity to form a vent hole, and an outer wall of the central tube penetrates through the inner cavity to form a square hole for facilitating the telescopic tube to telescope and slide.

[0014] Compared with the known prior art, the technical solution provided by the utility model has the following beneficial effects:

[0015] 1. The motor drives the rotating shaft to rotate the gear, which in turn drives the L-shaped rack to move linearly to both sides, thereby pushing the entire telescopic adjustment assembly including the extrusion plate to expand outward, and can quickly complete the installation and disassembly of cylindrical inner cavity wire rollers with different inner diameter specifications, and has the initial characteristics of being easy to use;

[0016] 2. The telescopic adjustment component includes a telescopic cylinder connected to the L-shaped rack, a telescopic rod slidably inserted into the telescopic cylinder and installed by a spring, and an extrusion plate rotatably installed together with the two telescopic rods. Therefore, when the conical inner cavity wire roller needs to be assembled, the extrusion plate is tilted and fully fits with the inner wall of the conical inner cavity wire roller through the rotation of the telescopic rod and the extrusion plate and the relative sliding of the telescopic rod and the telescopic cylinder, so that the installation and disassembly of the conical inner cavity wire roller with different inner diameter specifications can be quickly completed, and it is further easy to use. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the telescopic adjustment component structure of the utility model;

[0020] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0021] Figure 4 It is a schematic diagram of the installation structure of the telescopic cylinder and the telescopic rod of the utility model.

[0022] The numbers in the figure represent: 1, base plate; 11, screw; 2, frame; 21, motor; 22, rotating shaft; 23, gear; 24, L-shaped rack; 3, center tube; 31, telescopic tube; 32, telescopic rod; 33, spring; 34, extrusion plate; 35, rubber strip; 36, fixing block; 37, vent; 38, square hole. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solution and advantages of the embodiment of the utility model clearer, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] The utility model is further described below in conjunction with embodiments.

[0025] Example 1

[0026] Reference Figure 1-4 , which is the first embodiment of the utility model, discloses a wire-releasing device for a lock-locking machine, including a base plate 1 and a frame 2 rotatably mounted above the base plate 1, to facilitate the subsequent wire-releasing processing of the wire roller, a center cylinder 3 is fixedly mounted at the top center of the frame 2, two telescopic adjustment assemblies each include a telescopic cylinder 31 that telescopically slides through and extends out of the outer wall of the frame 2 and is arranged in parallel up and down, and a telescopic rod 32 is elastically inserted at one end of the telescopic cylinder 31 away from the center cylinder 3, the telescopic adjustment assembly also includes an extrusion plate 34 that is arranged on the outside of the center cylinder 3 and rotatably mounted with the corresponding two telescopic rods 32, and the extrusion plate 34 can be tilted at an angle to facilitate the effective extrusion and fixation of the wire roller in the conical inner cavity.

[0027] Example 2

[0028] Reference Figure 1-4, which is the second embodiment of the utility model. This embodiment is different from the first embodiment in that: four screws 11 distributed in a rectangular array are threadedly installed at the four corners of the bottom plate 1, which are convenient for detachable installation. A wire hole is opened through the center of the bottom plate 1 to facilitate the connection line of the motor 21 to pass through, so as to avoid the problem of the connection line of the motor 21 being entangled and knotted during the rotation process. The motor 21 is installed in the frame 2, and the output end of the motor 21 is installed with a rotating shaft 22 extending into the center tube 3. The outer shaft wall of the rotating shaft 22 is fixed with two gears 23, and the outer ring wall of the gear 23 is meshed with two L-shaped racks 24. The two L-shaped racks 24 are symmetrically distributed about the corresponding gear 23, and the ends away from the corresponding gear 23 are fixedly connected to the ends of the corresponding telescopic cylinder 31, and the telescopic cylinder 31 is away from the corresponding L A socket is provided at one end of the rack 24, and one end of the telescopic rod 32 is adapted to be inserted into the corresponding socket, and a spring 33 is installed between the socket, one end of the spring 33 is fixedly connected to the inner wall of the socket, and the other end is fixedly connected to the telescopic rod 32 to ensure that the telescopic rod 32 is always located in the socket, a rubber strip 35 is fixedly installed on the side of the extrusion plate 34 away from the center tube 3, and a fixed block 36 rotatably connected to the telescopic rod 32 is fixedly installed on the side of the extrusion plate 34 close to the center tube 3, the outer tube wall of the telescopic tube 31 passes through the inner cavity to provide a vent hole 37 to facilitate the telescopic sliding of the telescopic rod 32 and ensure that the pressure inside and outside the socket remains consistent, the outer tube wall of the center tube 3 passes through the inner cavity to provide a square hole 38 to facilitate the telescopic sliding of the telescopic tube 31, the telescopic tube 31 always slides through the square hole 38 to ensure that the telescopic sliding of the telescopic tube 31 is stable and reliable.

[0029] The remaining structures are the same as those of Example 1.

[0030] The workflow of this utility model is as follows:

[0031] First, the wire roller to be assembled is sleeved around the two rubber strips 35. At this time, the rubber strips 35 are not in contact with the inner wall of the wire roller. The motor 21 is started to drive the rotating shaft 22 to rotate, and then the gear 23 is driven to rotate, so that the two L-shaped racks 24 and the corresponding telescopic cylinders 31 are meshed and driven to move toward the two opposite outer walls of the center cylinder 3. At this time, the extrusion plate 34 and the rubber strip 35 gradually move away from the center cylinder 3, and finally squeeze and contact with the inner cavity wall of the wire roller, completing the assembly and fixation of the wire roller;

[0032] Secondly, if the inner cavity of the wire roller is designed to be conical, when the rubber strip 35 contacts the inner wall of the wire roller, the extrusion plate 34 and the corresponding telescopic rod 32 will be forced to rotate relative to each other, and the corresponding telescopic rod 32 will be further extended into the corresponding telescopic cylinder 31, thereby further squeezing the corresponding spring 33, and the elastic restoring force generated by the deformation of the spring 33 is fed back to the telescopic rod 32 and the extrusion plate 34, so that the rubber strip 35 is more closely attached to the inner wall of the conical inner cavity wire roller;

[0033] Finally, the wire roller installed on the outside of the central tube 3 starts to pay out the wire. During the paying out process, the entire frame 2 and the motor 21 installed in the frame 2, including the central tube 3 and the telescopic adjustment assembly, rotate synchronously. The connecting wire of the motor 21 passes through the wire hole on the bottom plate 1, and there will be no problem of entanglement and knotting.

[0034] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some of the technical features therein by equivalents. These modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the protection scope of the technical solutions of the embodiments of the present invention.

Claims

1. A wire-releasing device for an overlocking machine, comprising a base plate (1) and a frame (2) rotatably mounted above the base plate (1), a center cylinder (3) being fixedly mounted at the top center of the frame (2), characterized in that: Also includes: The two telescopic adjustment components each comprise a telescopic cylinder (31) which is telescopically slidable and extends through the outer wall of the frame (2) and is arranged in parallel up and down, and a telescopic rod (32) is elastically inserted at one end of the telescopic cylinder (31) away from the central cylinder (3). The telescopic adjustment component also comprises an extrusion plate (34) which is arranged outside the central cylinder (3) and is rotatably mounted with the corresponding two telescopic rods (32).

2. A wire release device for an overlocking machine according to claim 1, characterized in that: Four screws (11) distributed in a rectangular array are threadedly installed at the four corners of the bottom plate (1), and a wiring hole is provided through the center of the bottom plate (1).

3. The wire release device of the overlock machine according to claim 1, characterized in that: A motor (21) is installed in the frame (2), and a rotating shaft (22) extending into the central tube (3) is installed at the output end of the motor (21), and two gears (23) are fixedly mounted on the outer axial wall of the rotating shaft (22), and two L-shaped racks (24) are meshedly mounted on the outer annular walls of the gears (23).

4. A wire release device for an overlocking machine according to claim 3, characterized in that: The two L-shaped racks (24) are centrally symmetrically distributed about the corresponding gear (23), and the ends away from the corresponding gear (23) are respectively fixedly connected to the ends of the corresponding telescopic cylinders (31).

5. The wire release device of the overlock machine according to claim 3, characterized in that: The telescopic cylinder (31) is provided with an insertion hole at one end away from the corresponding L-shaped rack (24), one end of the telescopic rod (32) is adapted to be inserted into the corresponding insertion hole, and a spring (33) is installed between the insertion hole.

6. The wire-releasing device of the overlocking machine according to claim 1, characterized in that: A rubber strip (35) is fixedly mounted on the side of the extrusion plate (34) away from the central tube (3), and a fixed block (36) rotatably connected to the telescopic rod (32) is fixedly mounted on the side of the extrusion plate (34) close to the central tube (3).

7. The wire-releasing device of an overlocking machine according to claim 1, characterized in that: The outer wall of the telescopic cylinder (31) penetrates through the inner cavity and is provided with a vent hole (37), and the outer wall of the central cylinder (3) penetrates through the inner cavity and is provided with a square hole (38) for facilitating the telescopic and sliding movement of the telescopic cylinder (31).

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