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CN-224227407-U - Inner thread machine with thread cutting function

CN224227407UCN 224227407 UCN224227407 UCN 224227407UCN-224227407-U

Abstract

The utility model discloses an internal thread cutting machine with a thread cutting function, which comprises a sewing body, a rocker arm body, a thread hooking body, a needle plate retaining mechanism and a cutter mechanism, wherein the sewing body is provided with a needle capable of reciprocating, the rocker arm body can swing relative to the sewing body, so that a region through which a groove is formed in the rocker arm body is set as a grooving region, the thread hooking body is provided with a needle plate positioned in the groove to be penetrated by the needle, the needle plate retaining mechanism is used for retaining the needle plate in the swinging process of the rocker arm body, in addition, the cutter mechanism is provided with a movable cutter and a fixed cutter, the movable cutter can rotate in the rocker arm body and is matched with the fixed cutter to cut off the thread, and the fixed cutter can be selectively covered or exposed in the grooving region through the swinging rocker arm body, thereby the internal thread cutting machine has the effect of automatically cutting the thread to improve the convenience of the internal thread cutting machine.

Inventors

  • CHEN XUHUI

Assignees

  • 启翔股份有限公司
  • 启翔针车（上海）有限公司

Dates

Publication Date
20260512
Application Date
20250512

Claims (8)

  1. 1. An internal thread machine with a thread cutting function, comprising: A sewing body provided with a needle capable of reciprocating; The rocker arm body is provided with a slot which can be penetrated by the needle, and the rocker arm body can be connected with the sewing body in a swinging way, so that the rocker arm body can swing relative to the sewing body, and the area through which the slot passes is set as a slot area; The thread hooking body is provided with a needle plate arranged in the groove and a rotating shuttle base arranged in the rocker arm body, the needle plate is connected to the rotating shuttle base and is provided with a needle hole which can be inserted by the needle, and the rotating shuttle base accommodates a rotating shuttle; A needle plate holding mechanism arranged in the rocker arm body and connected with the rotating shuttle base, the needle plate holding mechanism being used for holding the rocker arm body in a static way during the swinging process of the rocker arm body, and The cutter mechanism is provided with a movable cutter capable of rotating in the rocker arm body and a fixed cutter connected to the rotating shuttle base, the movable cutter can be matched with the fixed cutter to cut off a suture, and the fixed cutter is adjacent to the slotting area, so that the rocker arm body swings to enable the slotting to pass through the fixed cutter, and the fixed cutter can selectively present a covering state of being partially covered by the rocker arm body or an exposed state of being wholly located in the slotting.
  2. 2. The internal thread cutting machine according to claim 1, wherein the cutter mechanism further comprises a cutter driving rod capable of rotating inside the rocker arm body and a cutter relay gear capable of operating through the cutter driving rod, and a connecting tooth part capable of being meshed with the cutter relay gear and a movable blade part capable of cutting a thread are arranged on the periphery of the movable cutter.
  3. 3. The internal thread cutting machine according to claim 2, wherein the rotating shuttle base is protruded to form a carrier flange, the fixed cutters are provided with fixed blade parts which are arranged at intervals on the outer edge of the carrier flange, so that a cutter moving area is formed between the carrier flange and the fixed blade parts, and the movable blade parts are arranged on the outer periphery of the carrier flange, so that the movable cutters rotate to enable the movable blade parts to pass through the cutter moving area.
  4. 4. The internal thread cutting machine according to claim 3, wherein one end of the bearing ring flange is provided with a thread hanging edge capable of blocking the thread, and the thread hanging edges are arranged in the cutter moving area at intervals, so that the movable blade part drives the thread to pass through the cutter moving area and contact the thread hanging edge before passing through the cutter moving area.
  5. 5. The internal thread cutting machine according to claim 4, wherein the rotating shuttle base is provided with a communicating groove communicated with the needle hole, two opposite sides of the communicating groove are respectively provided with a groove side wall surface, and the bearing ring flange protrudes out of one groove side wall surface, so that the thread hanging edge is opposite to the communicating groove.
  6. 6. The thread cutting machine according to claim 4, wherein the rotating shuttle base has a needle plate positioning gear connected to the needle plate holding mechanism and a rotating shuttle carrier ring connected to the needle plate, the needle plate positioning gear is recessed to form a positioning groove, the rotating shuttle carrier ring is formed with the carrier ring flange, and a positioning block capable of being engaged with the positioning groove is provided.
  7. 7. The thread cutting machine according to claim 6, wherein the needle plate positioning gear has an outer ring portion formed with the positioning groove and an inner ring portion having a smaller profile than the outer ring portion, a gear contact surface is formed between the outer ring portion and the inner ring portion, and the gear contact surface is contactable with the rotating shuttle carrier ring so that the inner ring portion can penetrate into the rotating shuttle carrier ring.
  8. 8. The internal thread cutting machine according to claim 2, wherein the movable blade part is provided with a thread hooking groove capable of hooking the thread and a movable blade arranged at intervals in the thread hooking groove, and a thread guiding groove capable of accommodating the thread is arranged between the thread hooking groove and the movable blade.

Description

Inner thread machine with thread cutting function Technical Field The utility model relates to an internal thread machine capable of sewing shoes, in particular to an internal thread machine capable of automatically cutting off stitches. Background The sewing machine mainly combines a plurality of layers of sewing materials through sewing, and along with the continuous evolution of technology, the sewing machine on the market at present has various styles, and the sewing machine with different styles can be applied to the sewing operation of different sewing materials, wherein the inner thread machine suitable for sewing the vamp and the sole is available on the market at present. The operation of the inner thread sewing machine mainly depends on a rocker arm body capable of swinging back and forth to execute sewing operation, when the inner thread sewing machine is used for sewing shoes, a welt of the shoes is sleeved into a shuttle at the tail end of the rocker arm body, and soles of the shoes are wound around one circle along with the period that the rocker arm body swings back and forth, so that a main shaft drives a needle to pass through the periphery of the soles of the shoes, needle threads can be interwoven on the bottom threads, and further locking thread traces are formed around the soles of the shoes. However, after the existing internal thread machine finishes the sewing operation, the user needs to rely on a manual mode to cut the thread, which not only causes inconvenience in the sewing operation flow of the existing internal thread machine, but also prolongs the whole sewing time of the existing internal thread machine, so that the production efficiency of the existing internal thread machine can not be improved, even when the existing internal thread machine is used for sewing the shoes with narrow internal space, the user often has difficulty in directly cutting the needle thread and the bottom thread in the shoes due to the limitation of the internal space of the shoes, and the needle thread and the bottom thread need to be pulled to the shoe mouth to be cut, thereby causing the waste of the needle thread and the bottom thread. In order to improve the sewing operation flow of the internal thread machine, the internal thread machine with an automatic thread cutting function is currently available on the market, and the cutter structure adopted by the internal thread machine with the automatic thread cutting function has the problem of fragile structure generally, so that the cutter structure is easy to break, once the cutter structure breaks, a technician needs to disassemble other related components of the internal thread machine in advance, and then the technician can replace the cutter mechanism, so that the process of replacing the cutter mechanism is not only tedious but also quite time-consuming, therefore, the defect of the existing internal thread machine is considered, and the innovation and improvement of the function of the internal thread machine are necessary to improve the use convenience of the internal thread machine, thereby improving the production efficiency of the internal thread machine. Disclosure of utility model The utility model aims to provide an inner threading machine with a thread cutting function, which can improve the convenience of the inner threading machine by improving the defect that the existing inner threading machine needs to rely on manual thread cutting operation, not only can obviously shorten the time required by the inner threading machine for carrying out a seam flow, but also can effectively improve the production efficiency of the inner threading machine. The utility model aims to provide an internal thread machine with a thread cutting function, which improves the disassembly and assembly process of replacing a fixed cutter, so that the disassembly and assembly process of replacing the fixed cutter is greatly simplified, and when a technician wants to replace the fixed cutter, the technician does not need to disassemble other related components of the internal thread machine in advance, and can directly replace the fixed cutter, thereby effectively improving the maintenance efficiency of replacing the fixed cutter and avoiding the possible shutdown time caused by unnecessary disassembly procedures. Another object of the present utility model is to provide an inner thread cutting machine with a thread cutting function, which ensures that the bottom thread exposed from the rotating shuttle can still have a sufficient length after the bottom thread is cut, so that the bottom thread can be smoothly pulled up when the inner thread cutting machine performs the next sewing operation, thereby avoiding the condition of needle leakage caused by insufficient thread end length of the bottom thread. In order to achieve the above object, the present utility model provides 1. An internal thread cutting machine having a thread cutting function, comprising: A