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CN-224227388-U - Hidden seam machine

CN224227388UCN 224227388 UCN224227388 UCN 224227388UCN-224227388-U

Abstract

The technical scheme belongs to the technical field of blind stitch machines, and particularly relates to a blind stitch machine which comprises a frame, a thread trimming device and a presser foot lifting device, wherein the frame is provided with a needle plate, the needle plate is used for supporting and guiding cloth, the thread trimming device comprises a scissors blade, the scissors blade is movably arranged above the needle plate, the thread trimming device is used for receiving an external signal and controlling the scissors blade to perform thread trimming work, the presser foot lifting device comprises a presser foot assembly, the presser foot assembly is movably arranged below the needle plate, the presser foot assembly can move close to the needle plate and clamp the cloth in cooperation with the needle plate, the presser foot lifting device comprises a presser foot lifting driving mechanism, the presser foot lifting driving mechanism comprises a presser foot lifting driving cylinder and a presser foot lifting driving shaft, the presser foot lifting driving cylinder is used for driving the presser foot lifting driving shaft to rotate, the presser foot lifting driving mechanism comprises a presser foot lifting rotating shaft and a presser foot lifting connecting rod group, and the presser foot lifting connecting rod group is used for receiving the presser foot lifting driving shaft to rotate, and inputting the power to the presser foot lifting rotating shaft to enable the presser foot driving shaft to rotate, and the presser foot assembly is arranged at the rear end of the presser foot lifting presser foot rotating shaft.

Inventors

  • CHEN BIN

Assignees

  • 浙江中森缝纫机有限公司

Dates

Publication Date
20260512
Application Date
20250430

Claims (9)

  1. 1. A blind stitching machine, comprising: a frame (1) having a needle plate (11), the needle plate (11) being used for supporting and guiding the cloth; A thread cutting device (2) comprising a shear blade (223), wherein the shear blade (223) is movably arranged above the needle plate (11), the thread cutting device (2) is used for receiving external signals and controlling the shear blade (223) to cut threads, and The presser foot lifting device (3) comprises a presser foot assembly (35), wherein the presser foot assembly (35) is movably arranged below the needle plate (11), and the presser foot assembly (35) can move close to the needle plate (11) and clamp cloth in cooperation with the needle plate (11); Wherein, lift presser foot device (3) include: The presser foot lifting driving mechanism comprises a presser foot lifting driving cylinder (31) and a presser foot lifting driving shaft (32) arranged at the output end of the presser foot lifting driving cylinder (31), and the presser foot lifting driving cylinder (31) is used for driving the presser foot lifting driving shaft (32) to rotate; A presser foot lifting transmission mechanism comprising a presser foot lifting rotating shaft (33) and a presser foot lifting connecting rod group (34), wherein the presser foot lifting connecting rod group (34) is used for receiving the rotation power of the presser foot lifting driving shaft (32) and inputting the power to the presser foot lifting rotating shaft (33) to rotate, and And a presser foot assembly (35) provided at the rear end of the presser foot lifting rotating shaft (33).
  2. 2. The blind stitching machine according to claim 1, wherein the presser foot lifting driving mechanism further comprises a curved driving connecting piece (321), the front end of the driving connecting piece (321) is connected with the output end of the presser foot lifting driving cylinder (31), and the rear end of the driving connecting piece is sleeved outside the presser foot lifting driving shaft (32) and is used for driving the presser foot lifting driving shaft (32) to rotate; The presser foot lifting driving mechanism further comprises a driving reset piece (322) and a reset connecting piece (323), the reset connecting piece (323) is sleeved outside the presser foot lifting driving shaft (32), one end of the driving reset piece (322) is connected to the reset connecting piece (323), and the other end of the driving reset piece is connected to the frame (1).
  3. 3. The blind stitching machine according to claim 2, wherein the presser foot lifting linkage (34) comprises: a hinging rod (341), wherein the middle part of the hinging rod is hinged on a swinging rod seat (12) in the frame (1); The rear end of the presser foot crank (342) is connected with the front end of the hinging rod (341), and the front end of the presser foot crank is sleeved outside the presser foot lifting rotating shaft (33); A presser foot bracket (343) with the front end connected with the rear end of the hinging rod (341) through a presser foot connecting rod (344), the rear end sleeved outside the presser foot lifting driving shaft (32), and A ball screw (346) movably arranged on the presser foot bracket (343) for driving the presser foot connecting rod (344); The ball position screw (346) is provided with a movable position, the presser foot connecting rod (344) is movably arranged in the movable position, the hinge rod (341) is provided with a kidney-shaped hole, and the hinge rod (341) is arranged on the swing rod seat (12) through a hinge pin.
  4. 4. The blind stitching machine according to claim 3, wherein the front end of the presser foot lifting rotating shaft (33) is provided with a presser foot mounting plate (345) extending sideways; The presser foot assembly (35) comprises: a right presser foot bracket (351) arranged on the presser foot mounting plate (345), wherein the right presser foot bracket (351) is also arranged on the presser foot lifting rotating shaft (33) through a right presser foot screw (352); A right presser foot section (353) provided on the right presser foot holder (351); a left presser foot bracket (354) provided on the presser foot mounting plate (345), the left presser foot bracket (354) being further provided on the frame (1) by a left presser foot screw (355), and A left presser foot portion (356) provided on the left presser foot holder (354).
  5. 5. The blind stitching machine according to claim 4, wherein the right presser foot bracket (351) and the left presser foot bracket (354) are respectively provided with a right presser foot lug (357) and a left presser foot lug (358), and the right presser foot lug (357) and the left presser foot lug (358) are erected on the presser foot mounting plate (345); The presser foot assembly (35) further comprises a right presser foot reset piece (359) and a left presser foot reset piece (360), one end of the right presser foot reset piece (359) is connected to the right presser foot support (351), the other end of the right presser foot reset piece is connected to the frame (1), one end of the left presser foot reset piece (360) is connected to the left presser foot support (354), and the other end of the left presser foot reset piece is connected to the frame (1).
  6. 6. The blind stitching machine according to claim 5, further comprising a lifting disc device (4) comprising a lifting disc driving mechanism (41) and a lifting disc portion (42), wherein the lifting disc drives the lifting disc portion (42) to lift through the swing rod seat (12), and the lifting disc portion (42) is located between the right presser foot portion (353) and the left presser foot portion (356).
  7. 7. A blind stitching machine according to any one of claims 1-6, wherein the thread cutting device (2) comprises: a wire clamping mechanism (21) arranged on the top surface of the frame (1), and A thread cutting mechanism (22) provided on the thread clamping mechanism (21); wherein the thread clamping mechanism (21) comprises: A wire clamping bracket (211) provided with two opposite mounting lugs (212), wherein a wire clamping mounting position (213) is formed between the two mounting lugs (212); A lead piece (214) which is arranged at the left side of the thread clamping installation position (213), wherein the front end of the lead piece (214) is provided with a threading hole (215); A wire pressing cylinder (216) arranged on the right side of the wire clamping installation position (213); a wire pressing stator (217) disposed adjacent to the lead piece (214), and And the wire pressing moving plate (218) is arranged at the output end of the wire pressing cylinder (216) and is used for clamping wires by matching with the wire pressing fixed plate (217).
  8. 8. The blind stitching machine according to claim 7, wherein the thread cutting mechanism (22) comprises: a thread cutting cylinder (221) provided on the thread clamping bracket (211), and And a scissors blade (223) provided at an output end of the wire cutting cylinder (221).
  9. 9. The blind stitching machine according to claim 8, wherein the thread clamping bracket (211) is bent downwards to form a thread cutting mounting plate (224), and the thread cutting cylinder (221) is arranged on the thread cutting mounting plate (224) through a thread cutting mounting block (222); the wire clamping bracket (211) is provided with a wire passing hole (225), and the scissors blade (223) is movably arranged below the wire passing hole (225).

Description

Hidden seam machine Technical Field The technical scheme relates to the technical field of blind stitch machines, in particular to a blind stitch machine. Background The existing hidden sewing machine is also called edge prying machine, and is a sewing machine for sewing edges such as a hem, cuffs, a trouser leg opening and the like of the coat. Because the existing automatic presser foot lifting electromagnet is used, larger vibration and noise can be generated during working, and meanwhile, the electromagnet is large in size and inconvenient to install randomly and integrally. Chinese patent CN201347494Y discloses a pneumatic presser foot lifting and thread trimming device of a blind stitch machine, and the transmission structure of the pneumatic presser foot lifting device and the pneumatic thread trimming device of the blind stitch machine is relatively complex, especially the pneumatic presser foot lifting device performs power transmission through a chain, and the power transmission mode is inefficient and easy to fail, and along with updating iteration of the blind stitch machine, the transmission mode is not suitable any more, so a more efficient transmission mode is required. Disclosure of Invention The technical scheme aims to provide the hidden stitch machine, and the problems of low transmission efficiency and complex transmission structure of the original hidden stitch machine are solved by adjusting the installation positions and the matching modes of the thread cutting device and the presser foot lifting device. The technical scheme aims at realizing the following steps: A blind stitch sewing machine comprises a frame, a thread cutting device and a presser foot lifting device, wherein the frame is provided with a needle plate, the needle plate is used for supporting and guiding cloth, the thread cutting device comprises a shear blade which is movably arranged above the needle plate, the thread cutting device is used for receiving external signals and controlling the shear blade to cut threads, the presser foot lifting device comprises a presser foot assembly which is movably arranged below the needle plate and can move close to the needle plate and clamp the cloth in cooperation with the needle plate, the presser foot lifting device comprises a presser foot lifting driving mechanism and a presser foot lifting connecting rod group, the presser foot lifting driving mechanism comprises a presser foot lifting driving cylinder and a presser foot lifting driving shaft which is arranged at the output end of the presser foot lifting driving cylinder, the presser foot lifting driving cylinder is used for driving the presser foot lifting driving shaft to rotate, the presser foot lifting driving mechanism comprises a presser foot lifting rotating shaft and the presser foot lifting connecting rod group which is used for receiving and inputting the power to the presser foot lifting rotating shaft to enable the presser foot to rotate, and the presser foot lifting assembly is arranged at the rear end of the presser foot lifting rotating shaft. Preferably, the presser foot lifting driving mechanism further comprises a bent driving connecting piece, the front end of the driving connecting piece is connected with the output end of the presser foot lifting driving cylinder, the rear end of the driving connecting piece is sleeved outside the presser foot lifting driving shaft and used for driving the presser foot lifting driving shaft to rotate, the presser foot lifting driving mechanism further comprises a driving reset piece and a reset connecting piece, the reset connecting piece is sleeved outside the presser foot lifting driving shaft, one end of the driving reset piece is connected to the reset connecting piece, and the other end of the driving reset piece is connected to the frame. Preferably, the presser foot lifting connecting rod group comprises a hinging rod, a presser foot crank, a presser foot bracket and a ball position screw, wherein the middle of the hinging rod is hinged to a swinging rod seat in the frame, the rear end of the presser foot crank is connected with the front end of the hinging rod, the front end of the presser foot crank is sleeved outside a presser foot lifting rotating shaft, the front end of the presser foot bracket is connected with the rear end of the hinging rod through a presser foot connecting rod, the rear end of the presser foot bracket is sleeved outside a presser foot lifting driving shaft, the ball position screw is movably arranged on the presser foot bracket and used for driving the presser foot connecting rod, the ball position screw is provided with a movable position, the presser foot connecting rod is movably arranged in the movable position, a waist-shaped hole is formed in the hinging rod, and the hinging rod is arranged on the swinging rod seat through a hinging pin. Preferably, the front end of the presser foot lifting rotating shaft is provided with a press