A sequin retainer

Abstract

The present invention discloses a sequin retainer, and the technical key points are as follows: It includes a sequin strip, an embroidery needle, a tool rest seat, a blade holder, a cutting knife, a bottom knife and a chip groove. A sequin retainer is installed on the bottom knife. The sequin retainer includes an integrally formed fixing part, an extending part and a fitting part. The fixing part is fixed on the bottom knife. The fitting part is arranged on the front side of the cutting knife and is in concave-convex fit with the front side of the cutting knife. The extending part is connected between the fixing part and the fitting part. A pressing piece part is integrally formed and bent at the middle position of the fitting part. The pressing piece part is arranged directly above the sequin. The pressing piece part is set as an arc groove bent towards the direction of the cutting knife. In the present invention, by arranging a sequin retainer at the front end of the cutting knife, the first sequin at the front end of the sequin strip is limited by the arc groove-shaped pressing piece part, preventing the sequin from bending under the action of the surface thread, so that the center of the sequin will not shift during the high-speed needle insertion process in different directions, thereby increasing the embroidery speed and improving the embroidery efficiency.

Description

Technical Field

[0001] The invention relates to the field of embroidery machines, and more particularly to a sequin retainer. Background Art

[0002] Sequin embroidery is composed of several sequins and stitches. Sequins are made of hard texture, smooth surface and high glossiness, and are combined with different colors, sizes and shapes to give the embroidery a unique effect.

[0003] Usually the process of placing sequins is as follows: the sequin device places a sequin on the fabric along the specified direction, and at the same time the embroidery needle and the surface thread pierce the fabric at the center of the sequin to fix the position of the sequin, and then pierce a few stitches back and forth along the outer edge of the sequin with this as the center to wrap the sequin and make it close to the fabric.

[0004] However, during the sequin embroidery process, the lower end of the upper thread is fastened to the fabric, during this process the upper thread is in a straightened state, and the embroidery frame is in motion during the embroidery process, and the upper thread is in an inclined and straightened state along the embroidery direction during this process. When the actual embroidery direction is forward and the inclined direction of the upper thread is facing forward, that is, when the upper thread does not contact the sequin to be embroidered, it can operate normally. When the embroidery direction changes, the inclined straightening direction of the upper thread changes, and the straightened upper thread will cause the sequin to flip upward or move forward and backward, causing the center position of the sequin to shift. During the high-speed needle insertion process, the embroidery needle cannot accurately pass through the center of the sequin, resulting in skipping and missing pieces. Especially in full-plate embroidery, skipping and missing pieces will seriously affect the quality of the embroidery.

[0005] In the current market, in order to solve the above problems, the commonly used method is to reduce the needle speed, that is, wait for the bent sequins to recover before inserting the needle, so as to ensure the quality of the embroidery, and at the same time adjust the needle direction of the embroidery and increase the number of needles to ensure that the surface thread and the embroidery piece do not form an angle so that the embroidery process is normal. However, the number of needles increased in this process is 30% to 50%. The above-mentioned reduction in needle speed and change in needle method seriously affect the embroidery efficiency and reduce production efficiency. Summary of the invention

[0006] In view of the deficiencies of the prior art, the present invention provides a sequin retainer.

[0007] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a sequin holder, comprising a sequin strip, an embroidery needle, a knife holder seat, a blade holder, a cutter, a bottom knife and a sheet slot, the blade holder is fixed at the lower end of the knife holder seat, the bottom knife is fixed at the lower side of the blade holder, a cutter shaft is rotatably mounted on the knife holder seat, one end of the cutter is fixed on the cutter shaft, and the other end extends toward the bottom knife, a mounting groove is provided on the bottom knife, the sheet slot is fixed in the mounting groove, the sequins are placed on the sheet slot, the embroidery needle is arranged just above the first sequin at the front end of the sequin strip, and a sequin holder is mounted on the bottom knife.

[0008] Preferably, the sequin retainer includes an integrally formed fixing portion, an extending portion and a fitting portion. The fixing portion is fixed on the bottom knife, the fitting portion is arranged on the front side of the cutting knife and is in concave-convex fit with the front side surface of the cutting knife. The extending portion is connected between the fixing portion and the fitting portion. A pressing piece portion is integrally formed and bent at the middle position of the fitting portion, and the pressing piece portion is arranged directly above the sequin.

[0009] Preferably, the pressing piece portion is bent towards the cutting knife to form an arc-shaped groove, the inner diameter of the arc-shaped groove of the pressing piece portion is smaller than the diameter of the sequin, and the embroidery needle is arranged directly above the inner side of the arc-shaped groove.

[0010] Preferably, the pressing piece portion is bent towards the cutting knife to form a trapezoidal groove, the maximum groove width of the trapezoidal groove of the pressing piece portion is smaller than the diameter of the sequin, and the embroidery needle is arranged directly above the inner side of the trapezoidal groove.

[0011] Preferably, a fitting groove is arranged on the cutting knife, and the width of the fitting groove is larger than that of the pressing piece portion.

[0012] Preferably, an adjusting notch is formed on the fixing portion, and the adjusting notch is fixed on the bottom knife by a bolt.

[0013] Preferably, a stepped groove is arranged on the lower side of the fixing portion, the stepped groove is buckled on the bottom knife, and the side wall of the stepped groove abuts against the front side wall of the bottom knife.

[0014] Preferably, a needle pressing mechanism is fixed on the bottom knife. The needle pressing mechanism includes a needle pressing seat fixed on the bottom knife, a needle pressing shaft rotatably fitted on the needle pressing seat, a sequin needle pressing fixed on the needle pressing shaft, and a needle pressing spring with two ends respectively abutting against the needle pressing seat and the sequin needle pressing. The front end of the sequin needle pressing abuts against the sequin strip.

[0015] In summary, through the above technical solutions, in the present invention, a sequin retainer is provided on the bottom knife. The fixing part of the sequin retainer is used to fixedly install the sequin retainer, and a stepped groove and a bolt are provided for fixation. The side wall of the stepped groove is used to prevent the sequin retainer from deflecting. An adjustment notch is provided to adjust the position of the sequin retainer, so that the fitting part at the front end of the cutter is closer to the cutter without touching the cutter, enabling the cutter to operate normally. The fitting part is arranged on the front side of the cutter through an extension part, which can completely block the front side of the cutter. After the needle speed is increased, the feeding speed of the top thread also increases accordingly. During this process, the top thread on the front section of the embroidery needle will form a swing during the short time when the embroidery needle moves up and down. The fitting part completely blocks the front side of the cutter, which can prevent the swinging top thread from swinging to the cutter position and avoid the possibility of the cutter cutting off the top thread and causing the interruption of the embroidery process. The arc-shaped (trapezoidal groove) pressing part that bends inward towards the cutter can limit the bending of the sequin strip directly above the sequin, keeping it straight, that is, ensuring that the center hole of the sequin does not shift. In this way, the needle insertion speed of the embroidery needle can be increased, and at the same time, the sequin embroidery can be directly and smoothly completed in any direction, thereby reducing the number of needle insertions set due to the deformation of the sequin caused by changing the direction. The improvement is made simultaneously from two aspects of the needle insertion speed and the number of needle insertions to improve the embroidery efficiency.

[0016] In addition, the setting of the needle pressing mechanism can avoid the situation of the sequin strip shrinking due to the horizontal inward top thread pressure received by the sequin during the idle period when the fork is lifted during the embroidery process, thereby avoiding the sequin jumping and missing due to the change of the horizontal direction of the sequin center and ensuring the normal operation of the embroidery. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a schematic structural diagram of a sequin retainer of the present invention;

[0018] Figure 2 is Figure 1 a partial enlarged view of part A in Figure 3 is a schematic structural diagram of the sequin retainer in the present invention.

[0019] Reference numerals: 1, sequin strip; 2, embroidery needle; 3, cutter; 4, bottom knife; 5, sequin slot; 6, sequin retainer; 61, fixing part; 62, extension part; 63, fitting part; 64, pressing part; 7, needle pressing seat; 8, needle pressing shaft; 9, sequin pressing needle; 10, needle pressing spring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Through Figure 1 Figure 3 a further description is made for a sequin retainer of the present invention.

[0021] Embodiment 1: A sequin retainer, comprising a sequin strip 1, an embroidery needle 2, a tool rest base, a blade holder, a cutting knife 3, a bottom knife 4 and a sheet slot 5. The blade holder is fixed to the lower end of the tool rest base, the bottom knife 4 is fixed to the lower side of the blade holder. A cutting knife shaft is rotatably fitted and installed on the tool rest base. One end of the cutting knife 3 is fixed to the cutting knife shaft, and the other end extends towards the bottom knife 4. An installation groove is formed on the bottom knife 4, and the sheet slot 5 is fixed in the installation groove. A sequin groove is formed at the bottom of the sheet slot 5, and sequins are placed in the sequin groove. The embroidery needle 2 is arranged directly above the first sequin at the front end of the sequin strip 1. A sequin retainer 6 is installed on the bottom knife 4. The sequin retainer 6 includes an integrally formed fixing part 61, an extending part 62 and a fitting part 63. An adjustment notch is formed on the fixing part 61, and the adjustment notch is fixed to the bottom knife 4 by bolts. A stepped groove is arranged on the lower side of the fixing part 61, and the stepped groove is buckled on the bottom knife 4. The side wall of the stepped groove abuts against the front side wall of the bottom knife 4. The fitting part 63 is arranged on the front side of the cutting knife 3 and is in concave-convex fit with the front side surface of the cutting knife 3. The extending part 62 is connected between the fixing part 61 and the fitting part 63. A pressing piece part 64 is integrally formed and bent at the middle position of the fitting part 63. The pressing piece part 64 is bent towards the cutting knife 3 and is in an arc groove shape. The inner diameter of the arc groove-shaped pressing piece part 64 is smaller than the diameter of the sequin. The embroidery needle 2 is arranged directly above the inside of the arc groove. A fitting groove is formed on the cutting knife 3, the width of the fitting groove is larger than that of the pressing piece part 64, and the pressing piece part 64 is arranged directly above the sequin.

[0022] Further, a pressing needle mechanism is fixed on the bottom knife 4. The pressing needle mechanism includes a pressing needle seat 7 fixed on the bottom knife 4, a pressing needle shaft 8 rotatably fitted on the pressing needle seat, a sequin pressing needle 9 fixed on the pressing needle shaft 8, and a pressing needle spring 10 with two ends respectively abutting against the pressing needle seat 7 and the sequin pressing needle 9. The front end of the sequin pressing needle 9 abuts against the sequin strip 1. A displacement notch is formed on the pressing needle seat 7, and the displacement notch is fixed to the bottom knife 4 by bolts.

[0023] Embodiment 2: The pressing piece part 64 can also be bent towards the cutting knife and be in a trapezoidal groove shape.

[0024] The above are only the preferred embodiments of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be pointed out that for those of ordinary skill in the art in this technical field, several improvements and refinements made without departing from the principle of the present invention should also be regarded as the protection scope of the present invention.

Claims

1. A sequin retainer, comprising a sequin strip, an embroidery needle, a tool rest seat, a blade holder, a cutting knife, a bottom knife and a chip groove. The blade holder is fixed to the lower end of the tool rest seat, the bottom knife is fixed to the lower side of the blade holder, a cutting knife shaft is rotatably fitted on the tool rest seat, one end of the cutting knife is fixed to the cutting knife shaft, and the other end extends towards the bottom knife. An installation groove is formed on the bottom knife, the chip groove is fixed in the installation groove, sequins are placed on the chip groove, the embroidery needle is arranged directly above the first sequin at the front end of the sequin strip, and it is characterized in that: A sequin retainer is installed on the bottom knife. The sequin retainer includes an integrally formed fixing part, an extending part, and a fitting part. A pressing piece part is integrally formed and bent at the middle position of the fitting part. The pressing piece part is set as an arc groove bent towards the cutter direction.

2. The sequin holder according to claim 1, characterized in that: The fixing part is fixed on the bottom knife. The fitting part is arranged on the front side of the cutter and is in concave-convex fit with the front side surface of the cutter. The extending part is connected between the fixing part and the fitting part. The pressing piece part is arranged directly above the sequin.

3. A sequin holder according to claim 1, characterized in that: The inner diameter of the arc groove is smaller than the diameter of the sequin. The embroidery needle is arranged directly above the inner side of the arc groove.

4. A sequin holder according to claim 1, characterized in that: The pressing piece part is set as a trapezoidal groove bent towards the cutter direction. The maximum groove width of the trapezoidal groove-shaped pressing piece part is smaller than the diameter of the sequin. The embroidery needle is arranged directly above the inner side of the arc groove.

5. The sequin holder according to claim 1, characterized in that: A fitting groove is arranged on the cutter. The width of the fitting groove is larger than that of the pressing piece part.

6. The sequin retainer according to claim 1, wherein: An adjusting notch is formed on the fixing part. The adjusting notch is fixed on the bottom knife through a bolt.

7. A sequin holder according to claim 1, characterized in that: A stepped groove is arranged on the lower side of the fixing part. The stepped groove is buckled on the bottom knife. The side wall of the stepped groove abuts against the front side wall of the bottom knife.

8. A sequin holder according to claim 1, characterized in that: A needle pressing mechanism is fixed on the bottom knife. The needle pressing mechanism includes a needle pressing seat fixed on the bottom knife, a needle pressing shaft rotatably fitted on the needle pressing seat, a sequin needle pressing fixed on the needle pressing shaft, and a needle pressing spring with two ends respectively abutting against the needle pressing seat and the sequin needle pressing. The front end of the sequin needle pressing abuts against the sequin strip.

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