TWI861871B - Electromagnetic thread tension controlling device - Google Patents

Abstract

This disclosure is directed to an electromagnetic thread tension controlling device, having a base, an electromagnet, a guiding rod, a pushing rod, a pushing plate, clamping pieces, a blocking ring and an electrical control component. The electromagnet fixed on the base has a main body and a core. The guiding rod fixed on the base has a central hole. The pushing rod is inserted through the central hole and configured corresponding to the core. The pushing plate sleeves the guiding rod and has a block abutted by the pushing rod. The clamping pieces stacked with each other sleeves the guiding rod and disposed at one side of the pushing plate. The thread is disposed between the clamping pieces. The blocking ring is arranged on the guiding rod. The electrical control component is electrically connected to the electromagnet. The pushing rod, the pushing plate and the clamping pieces are actuated by the core to move when the core is energized by the electrical control component, so that the thread is clamped between the clamping pieces. Accordingly, the thread is transferred through the two clamping pieces with a uniform tension.

Description

Electromagnetic thread tension control device

The present invention relates to the technical field of a sewing thread tension control device, particularly an electromagnetic sewing thread tension control device.

According to the existing sewing machine, the thread guide mainly includes a base, a screw, two thread clamps, a spring and a knob. When the thread tension is to be adjusted, the knob is rotated to move on the screw. When the knob moves toward the thread clamp, the spring in the knob chamber is compressed, and then the thread clamps are pressed against each other, so that the thread passing between the thread clamps can achieve the effect of increasing the tension. When the thread tension is to be reduced, the knob can be rotated in the opposite direction to reduce the pressure on the spring, thereby reducing the pressure of the spring on the thread clamps, and achieving the effect of loosening the thread.

The existing thread guide has the following problems in actual use. Since it controls the tension of the sewing thread through the pressure of the spring, the deformation and pressure of each spring are not exactly the same after winding and heat treatment. The sewing thread tension can only be adjusted according to the feel of each technician, so the quality of the finished products produced by different technicians varies.

Therefore, how to overcome the aforementioned problem of inconsistent seam tension is the technical problem that the inventor wants to solve.

One purpose of the present invention is to provide an electromagnetic sewing thread tension control device, which controls the tension of the sewing thread between two clamping pieces through an electromagnetic iron, and maintains the tension of the sewing thread passing through the two clamping pieces under the same conditions.

In order to achieve the above-mentioned purpose, the present invention provides an electromagnetic sewing wire tension control device, including a base, an electromagnetic iron, a wire rod, a top rod, a push plate, two wire clamping pieces, a stop ring and an electrical control component, the electromagnetic iron is fixed to the base, the electromagnetic iron includes a main body and an iron core that penetrates the main body and can move relative to the main body; the wire rod is fixed to the base, the wire rod has a center hole; the top rod penetrates the center hole and is configured corresponding to the iron core; the push plate is sleeved on the wire rod, the The push plate has a block for the push rod to push against; the two clamping pieces are mutually overlapped and sleeved on the wire rod and formed on one side of the push plate, and the sew wire is arranged between the two clamping pieces; the baffle is arranged on the wire rod and formed on one side of the two clamping pieces; the electrical control component is electrically connected to the electromagnet, and when the electrical control component energizes the electromagnet, the iron core will actuate the push rod, the push plate and one of the clamping pieces to move, thereby clamping the sew wire between the two clamping pieces.

1: Electromagnetic sewing thread tension control device

10: Base

11:Through hole

12: Screw hole

20: Magnet

21: Subject

211: Conductive wire

22: Iron core

30: Conductor rod

31: Loading section

311: Slotting

32: Fixed segment

33: Center hole

34: Internal thread

40: Top pole

50: Push board

51: Semicircular hole

52: Block

60: Wire clip

70: Stop ring

71: Staircase hole

72: Adjustment screw

80:Electrical control components

90: Wire rack

91: First wire hole

92: Second wire hole

95: Soft pad

96: Gasket

A:Sewing machine

L: Seam

Figure 1 is an appearance diagram of the electromagnetic sewing thread tension control device of the present invention combined with a sewing machine.

Figure 2 is an enlarged view of a local area of Figure 1.

Figure 3 is an exploded view of the electromagnetic sewing thread tension control device of the present invention.

Figure 4 is a diagram of the assembly of the electromagnetic sewing thread tension control device of the present invention.

Figure 5 is a cross-sectional view of the electromagnetic sewing thread tension control device of the present invention in use (I).

Figure 6 is a cross-sectional view of the electromagnetic sewing thread tension control device of the present invention in use (II).

The detailed description and technical contents of the present invention are described below with accompanying drawings. However, the attached drawings are only for reference and explanation and are not used to limit the present invention.

Please refer to Figures 1 to 4. The present invention provides an electromagnetic sewing thread tension control device, which is installed on a sewing machine A. The electromagnetic sewing thread tension control device 1 mainly includes a base 10, an electromagnetic iron 20, a wire rod 30, a top rod 40, a push plate 50, two clamping pieces 60, a stop ring 70 and an electrical control component 80.

The base 10 is roughly a rectangular body, with two through holes 11 and a screw hole 12 in the middle.

One end of the electromagnet 20 is fixed to the side of the base 10 by passing through the aforementioned through holes 11 through locking elements such as screws. The electromagnet 20 mainly includes a main body 21 and an iron core 22. The main body 21 mainly includes related components such as a housing and a winding assembly. One end of the main body 21 has a conductive wire 211 connected to the coil assembly. The iron core 22 passes through the main body 21 and can move linearly relative to the main body 21.

One end of the conductor rod 30 is fixed to the base 10, and it mainly includes a bearing section 31 and a fixed section 32 extending from the bearing section 31. The fixed section 32 is a screw corresponding to the screw hole 12 of the base 10, and the bearing section 31 has a slot 311. In addition, a center hole 33 is provided at the center of the conductor rod 30 to penetrate the axis of the bearing section 31 and the fixed section 32. In addition, an internal thread 34 is provided at one end of the bearing section 31 away from the fixed section 32.

The top rod 40 passes through the center hole 33 of the conductor rod 30 and is configured corresponding to the aforementioned iron core 22.

The push plate 50 is a circular sheet, and two semicircular holes 51 are provided in the middle of the push plate 50. A block 52 is formed between the semicircular holes 51. The push plate 50 is sleeved on the bearing section 31 of the conductor rod 30 by using the semicircular holes 51. The block 52 is formed in the aforementioned groove 311, so that one end of the top rod 40 is pressed against the side of the block 52.

Each clamping piece 60 is overlapped and sleeved on the bearing section 31 of the conductor rod 30, and is formed on one side of the push plate 50. A seam L is provided between each clamping piece 60.

The stop ring 70 is fixed to the end of the conductor rod 30 away from the base 10. The center of the stop ring 70 has a stepped hole 71, which is sleeved on the end of the conductor rod 30 away from the base 10, and an adjustment screw 72 is passed through the stepped hole 71 and screwed to the inner thread 34 of the conductor rod 30. The adjustment movement of the adjustment screw 72 limits the movement stroke of the top rod 40.

The electrical control assembly 80 is electrically connected to the electromagnet 20 through the conductive wire 211 of the electromagnet 20. When the electrical control assembly 80 energizes the electromagnet 20, the iron core 22 will actuate the top rod 40, the push plate 50 and one of the clamping pieces 60 to move toward the other clamping piece 60 and the stop ring 70, thereby clamping the sewing thread L between the two clamping pieces 60.

In one embodiment, the electrical control assembly 80 mainly includes a processor, a controller, a display screen, a current generator, etc., which can output a current. The electromagnet 20 generates a corresponding force on the iron core 22 according to the current, and controls the tension of the stitching L between the two clamping pieces 60 through the force and the actuation displacement.

The electromagnetic sewing thread tension control device 1 of the present invention also includes a thread passing frame 90, which is fixed on the base 10 through the wire rod 30, and has a first thread passing hole 91 and a second thread passing hole 92, wherein the first thread passing hole 91 is a thread entry hole, and the second thread passing hole 92 is a thread exit hole, that is, the sewing thread L passes through the first thread passing hole 91, then surrounds the wire rod 30 and is between the two clamping pieces 60, and then passes through the second thread passing hole 92.

The electromagnetic sewing thread tension control device 1 of the present invention also includes a soft pad 95 and a gasket 96. The soft pad 95 is between the thread passing frame 90 and the push plate 50, and the gasket 96 is between the thread clamping plate 60 and the stop ring 70. The soft pad 95 is mainly used to absorb the vibration of the push plate 50 when it is reset and to reduce noise. The gasket 96 is used to reduce the friction and wear of the stop ring 70.

Please refer to FIG. 5 and FIG. 6. When in use, an electric current is transmitted to the electromagnet 20 through the electrical control assembly 80. After receiving the power, the electromagnet 20 will drive the iron core 22 to translate toward the top rod 40, thereby pushing the right side clamping piece 60 to translate through the top rod 40 and the push plate 50 in sequence. At this time, the seam L will be clamped by the two clamping pieces 60 (as shown in FIG. 6), that is, the seam is clamped. The tension of the seam L depends on the size of the aforementioned current. On the contrary, when the electrical control assembly 80 is powered off, the aforementioned iron core 22 will be released by the main body 21, and the tension of the sewing thread L will drive the right side clamping piece 60 to move the push plate 50, the top rod 40 and the iron core 22 toward the right side (as shown in Figure 5), that is, the thread is loosened.

The above is only a preferred embodiment of the present invention and is not intended to limit the patent scope of the present invention. Other equivalent variations that apply the patent spirit of the present invention should all fall within the patent scope of the present invention.

1: Electromagnetic sewing thread tension control device

10: Base

11:Through hole

12: Screw hole

20: Magnet

21: Subject

211: Conductive wire

22: Iron core

30: Conductor rod

31: Loading section

311: Slotting

32: Fixed segment

34: Internal thread

40: Top pole

50: Push board

51: Semicircular hole

52: Block

60: Wire clip

70: stop ring

71: Staircase hole

72: Adjustment screw

80:Electrical control components

90: Wire rack

91: First wire hole

92: Second wire hole

95: Soft pad

96: Gasket

Claims (6)

An electromagnetic sewing thread tension control device comprises: a base; an electromagnetic iron fixed to the base, the electromagnetic iron comprising a main body and an iron core penetrating the main body and capable of moving relative to the main body; a wire rod fixed to the base, the wire rod having a central hole; a top rod penetrating the central hole and corresponding to the iron core; a push plate sleeved on the wire rod, the push plate having a block for the top rod to push against; two clamping pieces, which are overlapped and sleeved on the wire rod and formed on one side of the push plate, the sewing thread is arranged on the wire rod. between two clamping pieces; a baffle disposed on the wire rod and formed on one side of the two clamping pieces; a wire frame fixed to the base through the wire rod, the wire frame having a first wire hole and a second wire hole; a soft pad between the wire frame and the push plate; and an electrical control component electrically connected to the electromagnet. When the electrical control component energizes the electromagnet, the iron core will actuate the push rod, the push plate and one of the clamping pieces to move, thereby clamping the sewing wire between the two clamping pieces. As described in claim 1, the electromagnetic stitch tension control device, wherein the electrical control component is capable of outputting an electric current, and the electromagnet generates a corresponding force and actuation displacement on the iron core according to the electric current, thereby controlling the tension of the stitch between the two clamping pieces. The electromagnetic sewing wire tension control device as described in claim 1, wherein the wire rod includes a bearing section and a fixed section extending from the bearing section, the fixed section is fixed to the base, and the bearing section is used to connect the push plate, the two clamping pieces and the stop ring. As described in claim 3, the electromagnetic stitch tension control device, wherein the push plate is provided with two semicircular holes, the block is formed between the two semicircular holes, the bearing section has a slot, and the block is accommodated in the slot. As described in claim 3, the electromagnetic sewing thread tension control device, wherein the end of the bearing section away from the fixed section is provided with an internal thread, the stop ring has a stepped hole, the stop ring is sleeved with the bearing section through the stepped hole, and an adjustment screw is passed through the stepped hole to screw the internal thread. The electromagnetic sewing thread tension control device as described in claim 1 further includes a gasket, which is located between the two thread clamping pieces and the stop ring.

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