CN210438929U - Multi-needle machine belt cutting device - Google Patents

Abstract

The utility model discloses a multi-needle machine belt cutting device, including fixing the installation piece on the multi-needle machine platen, U type frame include the entablature, with the entablature even lower beam as an organic whole, opening towards the multi-needle machine aircraft nose, the installation piece with the lower beam rigid coupling, the free end of lower beam sets firmly the lower cutter that the blade is up, the free end of entablature sets firmly the sliding seat, with the sliding seat cooperation sets up the slider, the lower extreme of slider sets firmly the upper cutter that the blade is down, the upper cutter with the lower cutter forms low vice mechanism that moves; the free end of entablature still sets firmly the mounting bracket, the driving source sets firmly on the mounting bracket, the drive that receives the driving source of slider for the sliding seat slides from top to bottom. Compared with the prior art, the utility model discloses install on the sewing machine mesa, contactless sewing machine head can not harm former sewing machine head, prevents simultaneously in the use that the aircraft nose from producing vibration and influencing sewing effect.

Description

Multi-needle machine belt cutting device

Technical Field

The utility model relates to a sewing machine specifically is a many needles machine belt cutting device.

Background

The multi-needle machine has various types and is widely applied to decorative sewing. The multi-needle sewing machine is divided into 3-needle, 4-needle, 6-needle, 9-needle, 12-needle, 16-needle, 21-needle, 24-needle, 25-needle, 33-needle, 38-needle and 50-needle sewing machines. The multi-needle machine can realize the functions of pleating, packaging, rubber band wrinkle extraction and the like after being provided with the auxiliary device.

The existing multi-needle machine does not have an automatic belt cutting function, and meanwhile, due to the fact that the number of needles of the multi-needle machine is large, the number of corresponding ropes is large, labor intensity of manual thread trimming is high, thread ends are long, secondary trimming is usually needed by auxiliary work, and efficiency is low.

Disclosure of Invention

The utility model aims at overcoming the not enough of current hemming machine can not automatic trimming, discloses a device that can automatic cutting tape, and the technical scheme of taking is:

the utility model provides a many needles machine belt cutting device which characterized in that: the device comprises a mounting block and a U-shaped frame, wherein the mounting block is fixed on a multi-needle machine platen, the U-shaped frame comprises an upper cross beam, a lower cross beam and a multi-needle machine head, the lower cross beam is connected with the upper cross beam into a whole, an opening faces the multi-needle machine head, the mounting block is fixedly connected with the lower cross beam, a lower cutter with an upward cutting edge is fixedly arranged at the free end of the lower cross beam, a sliding seat is fixedly arranged at the free end of the upper cross beam, a sliding block is arranged in a manner of being matched with the sliding seat, an upper cutter with a downward cutting edge is fixedly arranged at the lower end of the sliding block; the free end of entablature still sets firmly the mounting bracket, the driving source sets firmly on the mounting bracket, the drive that receives the driving source of slider for the sliding seat slides from top to bottom.

The shearing pair is a low-pair mechanism. The kinematic pair is a movable connection that two components are in direct contact and can generate relative motion. The kinematic pairs in surface-to-surface contact have a lower pressure at the contact portion and are called low pairs, while kinematic pairs in point or line contact are called high pairs, which are more susceptible to wear than low pairs. The lower pair is generally provided with a revolute pair, a moving pair and a screw pair, and the higher pair is provided with a wheel and a steel rail, a cam and a driven piece, a gear transmission and the like. All kinematic pairs in the mechanism are low pairs, and the mechanism is called a low pair mechanism; at least one kinematic pair in the mechanism is a high pair, and the mechanism is called a high pair mechanism.

Furthermore, the lower end of the sliding block is connected with the upper cutter through a screw, a spring is sleeved in the screw, and the spring presses the upper cutter. When the upper cutter and the lower cutter cut the belt, the upper cutter has certain floating amount and pre-pressure.

Further, an output shaft of the driving source is fixedly connected with an outer ring of a joint bearing, and an inner ring of the joint bearing is fixedly connected with the sliding block.

Furthermore, the cutting edge of the upper cutter inclines obliquely upwards towards the nose, and the inclination angle is 5-20 degrees.

Further, the driving source is a cylinder.

Further, the driving source is an electromagnet.

Further, the driving source is a linear motor. The linear motor is also called linear motor, linear motor and push rod motor, and is a transmission device which directly converts electric energy into linear motion mechanical energy without any intermediate conversion mechanism.

Compared with the prior art, the utility model discloses install on the sewing machine mesa, contactless sewing machine head can not harm former sewing machine head, prevents simultaneously in the use that the aircraft nose from producing vibration and influencing sewing effect. The driving source is connected with the upper cutter through the joint bearing, so that errors caused by installation can be corrected.

Drawings

FIG. 1 is a schematic structural view of example 1.

Detailed Description

Embodiment 1, referring to the drawings, a multi-needle machine belt cutting device includes an installation block 1 fixed on a multi-needle machine platen, and a U-shaped frame 2, where the U-shaped frame 2 includes an upper beam 21, a lower beam 22 integrated with the upper beam 21, and a multi-needle machine head with an opening facing the multi-needle machine, the installation block 1 is fixedly connected with the lower beam 22, a lower cutter 3 with an upward cutting edge is fixedly arranged at a free end of the lower beam 22, a sliding seat 4 is fixedly arranged at a free end of the upper beam 21, a sliding block 5 is arranged in cooperation with the sliding seat 4, an upper cutter 6 with a downward cutting edge is fixedly arranged at a lower end of the sliding block 5, the cutting edge of the upper cutter 6 is inclined to an obliquely upper side of the machine head, and an inclination angle a is 15 °. The upper cutter 6 and the lower cutter 3 form a low-pair moving pair mechanism; the free end of entablature 21 still sets firmly mounting bracket 7, the driving source 8 sets firmly on the mounting bracket 7, the driving source is the cylinder. An output shaft of the driving source 8 is fixedly connected with an outer ring of a joint bearing 9, and an inner ring of the joint bearing 9 is fixedly connected with the sliding block 5. The slide 5 is driven by a driving source to slide up and down relative to the slide seat 4. The lower end of the sliding block 5 is connected with the upper cutter 6 through a screw 10, a spring 11 is sleeved in the screw, and the spring 11 presses the upper cutter 6.

Claims (7)

1. The utility model provides a many needles machine belt cutting device which characterized in that: the device comprises a mounting block (1) fixed on a multi-needle machine platen and a U-shaped frame (2), wherein the U-shaped frame (2) comprises an upper cross beam (21), a lower cross beam (22) connected with the upper cross beam (21) into a whole, and a multi-needle machine head with an opening facing towards the multi-needle machine, the mounting block (1) is fixedly connected with the lower cross beam (22), a lower cutter (3) with an upward cutting edge is fixedly arranged at the free end of the lower cross beam (22), a sliding seat (4) is fixedly arranged at the free end of the upper cross beam (21), a sliding block (5) is arranged in a matching manner with the sliding seat (4), and an upper cutter (6) with a downward cutting edge is fixedly arranged at the lower end of the sliding block; the free end of entablature (21) still sets firmly mounting bracket (7), set firmly driving source (8) on mounting bracket (7), the drive that receives the driving source of slider (5) for slide from top to bottom sliding seat (4).

2. A multiple needle machine belt cutting apparatus as claimed in claim 1, wherein: the lower end of the sliding block (5) is connected with the upper cutter (6) through a screw (10), a spring (11) is sleeved in the screw, and the spring (11) presses the upper cutter (6).

3. A multiple needle machine belt cutting apparatus as claimed in claim 1, wherein: the output shaft of the driving source (8) is fixedly connected with the outer ring of a joint bearing (9), and the inner ring of the joint bearing (9) is fixedly connected with the sliding block (5).

4. A multiple needle machine belt cutting apparatus as claimed in claim 1, wherein: the cutting edge of the upper cutter (6) inclines obliquely upwards towards the nose direction, and the inclination angle (a) is 5-20 degrees.

5. A multiple needle machine belt cutting apparatus as claimed in claim 1, wherein: the driving source is a cylinder.

6. A multiple needle machine belt cutting apparatus as claimed in claim 1, wherein: the driving source is an electromagnet.

7. A multiple needle machine belt cutting apparatus as claimed in claim 1, wherein: the driving source is a linear motor.

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