Thread stand of sewing machine

Abstract

The utility model relates to the technical field of sewing machines, in particular to a thread stand of a sewing machine, which comprises a supporting rod, a transverse plate is fixedly connected to the side wall of the supporting rod, a plurality of trays are rotatably connected to the upper end of the transverse plate, a guide column is fixedly connected to the upper ends of the trays, and a plurality of abutting plates are distributed on the side wall of the guide column in an annular array mode. The side wall of the supporting rod is fixedly connected with a plate block, a plurality of guide grooves are formed in the plate block in a penetrating mode, the side wall of the supporting rod is fixedly connected with a lead plate, and a plurality of lead grooves are formed in the lead plate in a penetrating mode. An operator enables a bobbin with a coil to penetrate through a guide column to be placed at the upper end of a tray, a rod body is rotated through a hexagon wrench, so that a movable block drives a sliding block to slide, when the sliding block slides, an abutting plate transversely slides through cooperation of a connecting block, a connecting rod and a connecting base, and the bobbin is clamped and fixed from the interior; and meanwhile, bobbins with different diameters can be conveniently clamped and fixed through the sliding abutting plate.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machines, in particular to a thread rack of a sewing machine. Background Art

[0002] The thread stand of a sewing machine has a wide range of applications and needs to meet the requirements of using a variety of coils and bobbins. The thread stand design should be flexible and adjustable to meet the needs of using different coils and bobbins. At the same time, when designing the thread stand, the differences between different sewing machines, production processes and sewing materials should be fully considered to minimize production accidents and defective product rates caused by thread stand problems.

[0003] After searching, the utility model patent with Chinese patent publication number CN218561809U discloses an adjustable thread stand for a sewing machine, including a support column, a first fastening sleeve is sleeved on the surface of the lower end of the support column, a support plate is fixedly installed on the right side of the first fastening sleeve, a thread reel is movably installed on the top of the support plate, a guide seat is fixedly installed on the top of the thread reel, a guide rod is fixedly installed on the top of the guide seat, a second fastening sleeve is sleeved on the surface of the upper end of the support column, a thread clamping row is fixedly installed on the right side of the second fastening sleeve, and a guide hole is opened on the front of the thread clamping row. The utility model can limit one end of the thread group by adding a guide tube and a wire tube in the moving direction of the thread group, so that the thread group will not be excessively offset when in use, and the thread group is always limited by the guide tube and the wire tube when moving inside the thread stand, and can also limit the thread group individually, and ensure that the multi-strand thread group will not be entangled when in use, thereby improving the utilization rate.

[0004] After searching the above patent, it was found that the entanglement of multiple strands of wire was handled. However, the device failed to deal with the situation where the wire was pulled too fast and the wire drum could not keep up, causing the wire to break easily, thereby requiring the operator to re-thread the wire, resulting in more troublesome operation. Utility Model Content

[0005] The utility model aims to provide a thread stand for a sewing machine, which can prevent the thread from breaking due to excessive pulling speed, so as to solve the problem of easy breaking due to excessive pulling speed in the prior art.

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

[0007] A thread rack for a sewing machine comprises a support rod, a horizontal plate is fixedly connected to the side wall of the support rod, a plurality of trays are rotatably connected to the upper end of the horizontal plate, a guide column is fixedly connected to the upper end of the tray, a plurality of abutment plates are arranged in a circular array on the side wall of the guide column, a plate is fixedly connected to the side wall of the support rod, the plate is located above the horizontal plate, a plurality of guide grooves are arranged inside the plate, a lead plate is fixedly connected to the side wall of the support rod, the lead plate is located above the plate, a plurality of lead grooves are arranged inside the lead plate.

[0008] Preferably, a rod body is rotatably connected inside the guide column, two movable blocks are slidably connected inside the guide column, the rod body and the movable blocks are rotatably connected through a thread, a plurality of sliders are distributed in a circular array on the side wall of the movable block, and the sliders are slidably connected to the side wall of the guide column.

[0009] Preferably, a connecting block is fixedly connected to the end of the sliding block, two connecting seats are symmetrically fixedly connected to the inner side of the abutment plate, and a connecting rod is hinged between the connecting block and the connecting seat.

[0010] Preferably, a protective pad is fixedly connected to the outer side of the abutment plate.

[0011] Preferably, two rollers are rotatably connected inside the guide groove.

[0012] Preferably, a plurality of movable plates are slidably connected inside the lead plate, a spring is fixedly connected between the lower end of the movable plate and the inside of the lead plate, and the movable plate is slidably connected to the lead groove.

[0013] Compared with the prior art, the advantages of the utility model are:

[0014] 1. The operator places the wire bobbin with the coil through the guide column and on the upper end of the tray. By using a hexagonal wrench to rotate the rod body, the movable block drives the slider to slide. When the slider slides, the support plate slides horizontally through the cooperation between the connecting block, the connecting rod and the connecting seat. The multiple horizontally sliding support plates are opened outward to clamp and fix the wire bobbin from the inside. At the same time, the sliding support plates facilitate the clamping and fixing of wire bobbins of different diameters.

[0015] 2. Pull out the thread end of the coil and pass it through the guide groove and the wire lead groove, and then connect the thread end to the sewing machine. The movable plate of the installed roller can reduce the contact between the thread and the guide groove and the wire lead groove, avoid friction between the thread and the guide groove and the wire lead groove, and cause the thread to break. At the same time, the rotating tray can prevent the sewing machine from pulling the thread too fast and the bobbin from rotating, causing the thread to suddenly tighten and break. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1The utility model is a front cross-sectional structural schematic diagram of a thread rack of a sewing machine.

[0017] Figure 2 The utility model is a schematic diagram of a top view and a cross-sectional structure of a plate of a thread rack of a sewing machine.

[0018] Figure 3 for Figure 1 Schematic diagram of the structure of part A.

[0019] In the figure: 1 support rod, 2 cross plate, 3 tray, 4 guide column, 5 rod body, 6 movable block, 7 slider, 8 connecting block, 9 abutment plate, 10 connecting seat, 11 connecting rod, 12 protective pad, 13 plate, 14 guide groove, 15 roller, 16 lead plate, 17 lead groove, 18 movable plate, 19 spring. DETAILED DESCRIPTION

[0020] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0021] Reference Figure 1-3 A thread stand for a sewing machine comprises a support rod 1, a horizontal plate 2 is fixedly connected to the side wall of the support rod 1, a plurality of trays 3 are rotatably connected to the upper end of the horizontal plate 2, a guide column 4 is fixedly connected to the upper end of the tray 3, a plurality of abutment plates 9 are arranged in a circular array on the side wall of the guide column 4, a plate 13 is fixedly connected to the side wall of the support rod 1, the plate 13 is located above the horizontal plate 2, a plurality of guide grooves 14 are arranged inside the plate 13, a lead plate 16 is fixedly connected to the side wall of the support rod 1, the lead plate 16 is located above the plate 13, a plurality of lead grooves 17 are arranged inside the lead plate 16, an operator places a bobbin with a coil through the guide column 4 on the upper end of the tray 3, opens outward through a plurality of sliding abutment plates 9, clamps and fixes the bobbin from the inside, pulls out the thread end of the coil through the guide groove 14 and the lead groove 17, and then connects the thread end to the sewing machine.

[0022] A rod body 5 is rotatably connected inside the guide column 4, and two movable blocks 6 are slidably connected inside the guide column 4. The rod body 5 and the movable block 6 are rotatably connected through a thread. A plurality of sliders 7 are distributed in a ring array on the side wall of the movable block 6. The slider 7 is slidably connected to the side wall of the guide column 4. A hexagonal notch is provided at the upper end of the rod body 5. By using a hexagonal wrench to rotate the rod body 5, the movable block 6 drives the slider 7 to slide up and down. At the same time, positive and negative threads are provided on the side wall of the rod body 5. The two movable blocks 6 correspond to the positive and negative threads. When the rod body 5 rotates, the two movable blocks 6 slide relative to each other.

[0023] A connecting block 8 is fixedly connected to the end of the slider 7, and two connecting seats 10 are symmetrically fixedly connected to the inner side of the support plate 9. A connecting rod 11 is hinged between the connecting block 8 and the connecting seat 10. When the slider 7 slides, the support plate 9 slides laterally through the cooperation between the connecting block 8, the connecting rod 11 and the connecting seat 10.

[0024] A protective pad 12 is fixedly connected to the outer side of the abutment plate 9, and the installed protective pad 12 is used to flexibly clamp the wire bobbin.

[0025] Two rollers 15 are rotatably connected inside the guide groove 14. The installed rollers 15 can reduce direct contact between the wire and the guide groove 14, avoid friction between the wire and the guide groove 14, and cause the wire to break. At the same time, the rollers 15 rotate as the wire is pulled.

[0026] A plurality of movable plates 18 are slidably connected inside the lead plate 16, a spring 19 is fixedly connected between the lower end of the movable plate 18 and the inside of the lead plate 16, the movable plate 18 is slidably connected to the lead groove 17, and the elasticity of the spring 19 makes the movable plate 18 contact with the wire, thereby reducing the contact between the wire and the lead groove 17.

[0027] In the utility model, the operator places the wire bobbin with the coil through the guide column 4 and on the upper end of the tray 3, and rotates the rod body 5 by using a hexagonal wrench, so that the movable block 6 drives the slider 7 to slide. When the slider 7 slides, the support plate 9 slides horizontally through the cooperation between the connecting block 8, the connecting rod 11 and the connecting seat 10, and the multiple horizontally sliding support plates 9 are opened outward to clamp and fix the wire bobbin from the inside.

[0028] After the thread spool is fixed, the thread end of the coil is pulled out and passed through the guide groove 14 and the lead groove 17, and then the thread end is connected to the sewing machine. The movable plate 18 of the installed roller 15 can reduce the contact between the thread and the guide groove 14 and the lead groove 17, avoiding friction between the thread and the guide groove 14 and the lead groove 17, which may cause the thread to break.

[0029] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A thread stand for a sewing machine, comprising a support rod (1), characterized in that: The side wall of the support rod (1) is penetrated and fixedly connected with a transverse plate (2), the upper end of the transverse plate (2) is rotatably connected with a plurality of trays (3), the upper end of the tray (3) is fixedly connected with a guide column (4), the side wall of the guide column (4) is provided with a plurality of abutment plates (9) in a circular array, the side wall of the support rod (1) is penetrated and fixedly connected with a plate (13), the plate (13) is located above the transverse plate (2), a plurality of guide grooves (14) are penetrated inside the plate (13), the side wall of the support rod (1) is penetrated and fixedly connected with a lead plate (16), the lead plate (16) is located above the plate (13), a plurality of lead grooves (17) are penetrated inside the lead plate (16).

2. A thread stand for a sewing machine according to claim 1, characterized in that: The guide column (4) is internally rotatably connected to a rod body (5), and the guide column (4) is internally slidably connected to two movable blocks (6). The rod body (5) and the movable blocks (6) are rotatably connected via a threaded connection. A plurality of sliders (7) are distributed in a circular array on the side wall of the movable block (6), and the sliders (7) are slidably connected to the side wall of the guide column (4).

3. A thread stand for a sewing machine according to claim 2, characterized in that: The end of the slider (7) is fixedly connected to a connecting block (8), the inner side of the abutment plate (9) is symmetrically fixedly connected to two connecting seats (10), and a connecting rod (11) is hinged between the connecting block (8) and the connecting seat (10).

4. A thread stand for a sewing machine according to claim 1, characterized in that: A protective pad (12) is fixedly connected to the outer side of the abutment plate (9).

5. The thread stand of a sewing machine according to claim 1, characterized in that: Two rollers (15) are rotatably connected inside the guide groove (14).

6. A thread stand for a sewing machine according to claim 1, characterized in that: A plurality of movable plates (18) are slidably connected inside the lead plate (16), a spring (19) is fixedly connected between the lower end of the movable plate (18) and the inside of the lead plate (16), and the movable plate (18) is slidably connected to the lead groove (17).

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