CN107954229A - Window-passing cutting electromagnetic antifriction mechanism of single-cavity automatic cutting machine - Google Patents

Abstract

The electromagnetic friction reduction mechanism of the single-chamber automatic cutting machine for through-window cutting includes a vacuum chamber body, which is sealed on all sides, and a vacuum pipe is installed at the bottom. A through hole is opened on the top for laying bristle bricks. A cloth conveying mechanism is arranged inside the chamber, including a main beam, an upper slide rail, a lower slide rail, a bristle brick support plate, bristle bricks, a sprocket, a sprocket driving shaft, a sprocket driven shaft, a transmission chain, and a polytetrafluoroethylene slide. The bristle bricks are installed above the bristle brick support plate, and the two ends of the bristle brick support plate are respectively connected to the transmission chain. Driven by the transmission chain, the bristle brick support plate is cyclically fed around the annular polytetrafluoroethylene slide to realize cloth conveying. A permanent magnet is installed at the bottom of the bristle brick support plate, and an electromagnet with a silicon steel core is installed on the upper slide rail. The direction of the magnetic field generated by the electromagnet is the same as the direction of the magnetic field of the permanent magnet, thereby well offsetting the positive pressure and friction of the bristle brick support plate acting on the polytetrafluoroethylene slide when the vacuum chamber is in a negative pressure state, thereby realizing through-window cutting of the automatic cutting machine.

Description

Electromagnetic anti-friction mechanism for single-chamber automatic cutting machine cutting through the window

technical field

The invention relates to the technical field of clothing cutting. More specifically, the present invention relates to an electromagnetic friction-reducing mechanism for cutting through a window of a single-chamber automatic cutting machine.

Background technique

At present, in the field of clothing cutting, vacuum adsorption and conveying devices are mostly used for the positioning and transmission of multi-layer fabrics. However, most of the current automatic cutting machines work in the four-step cycle of adsorption-cutting-boost-transfer, and the efficiency is low. If the cloth is conveyed while ensuring the adsorption pressure, the cutting efficiency will be improved. Under the action of negative pressure, there will be a lot of extrusion and friction between the slide rail and the felt support plate, which will cause excessive wear of the slide rail and breakage of the transmission chain, resulting in the inability of the cutting machine to work effectively and reducing the service life of the cutting machine . Therefore, it is necessary to improve the existing mechanism so that it can complete the normal cloth transmission and realize the window cutting under the situation of adsorption.

Contents of the invention

The present invention overcomes the above-mentioned shortcomings of the prior art, and provides an electromagnetic friction-reducing mechanism for cutting through a window of a single-chamber automatic cutting machine.

On the basis of the original equipment, the present invention can effectively control the pressure between the slide rail and the felt support plate through structural improvement, thereby overcoming the defects of the broken transmission chain and the damage of the slide rail, and realizing the automatic cutting machine cutting while walking The function of cropping through the window.

The technical scheme implemented in the present invention is as follows:

Single-chamber automatic cutting machine through the window cutting electromagnetic anti-friction mechanism, including a closed vacuum chamber body 10, the vacuum chamber body 10 is connected to the vacuum pipeline 6 for vacuuming, and the top of the vacuum chamber body 10 is used for laying bristles. The opening of the raw brick 3, the vacuum cavity cavity 10 is provided with a cloth conveying mechanism;

The cloth transmission mechanism includes a main beam 7, a track, a bristle brick support plate 4, a bristle brick 3, a sprocket 9, a sprocket driving shaft 8a, a sprocket driven shaft 8b, a transmission chain 2, and a slide bar 11;

The main beam 7 is horizontally suspended and installed inside the vacuum chamber 10, and several circular tracks are installed longitudinally on the main beam 7. The plane of the track is perpendicular to the main beam 7, and the tracks include upper and lower slides respectively located above and below the main beam 7. Rail 1a, lower rail 1b; the rails are parallel to each other, and the two rails on the side are provided with a transmission chain 2, and the two ends of the transmission chain 2 are respectively connected to the sprocket driving shaft 8a and the sprocket driven shaft through the sprocket 9 8b;

The surface of the upper slide rail 1a and the lower rail 1b is provided with a slide bar 11, the surface of the slide bar 11 supports the bristle brick support plate 4, and the bristle brick support plate 4 is lath-shaped, and the top of the bristle brick support plate 4 The bristle brick 3 is installed, and the bottom of the bristle brick support plate 4 is equipped with a permanent magnet 12;

An electromagnet 16 is provided on the upper slide rail 1a, and the electromagnet 16 and the permanent magnet 12 are arranged in the opposite direction of the magnetic pole of the same name;

The two ends of the bristle brick support plate 4 are connected to the transmission chain 2 respectively, and the sprocket drive shaft 8a drives the transmission chain 2 through the sprocket 9, and then drives the bristle brick support plate 4 to circulate and feed along the track to realize the cloth transmission.

Preferably, the electromagnet 16 is composed of a silicon steel core 15 and a coil 13. There are multiple electromagnets 16 on a single upper slide rail 1a, and the coils 13 of each electromagnet 16 are connected in parallel to form a The electromagnet coil parallel group 17 connects the electromagnet coils 13 on each upper slide rail 1 a in parallel to form an overall coil parallel group 18 .

Compared with the prior art, the present invention has a simple structure, less changes to the original automatic cutting machine, can effectively offset the contact friction through electromagnetic force, reduce the failure rate of equipment, realize the window cutting of the automatic cutting machine, and improve the cutting efficiency. efficiency.

Description of drawings

Fig. 1 is the general assembly diagram of the vacuum chamber cavity of the present invention;

Figure 1a is a partially enlarged view of Figure 1;

Fig. 2 is a diagram of the internal structure of the vacuum cavity of the present invention;

Fig. 3 is a structural diagram of a bristle support plate of the present invention;

Fig. 4 is the schematic diagram of electromagnetic friction reducing device of the present invention;

Fig. 5 is a structural diagram of the upper slide rail of the present invention;

Fig. 6 is a structural diagram of the glide rail of the present invention;

Fig. 7 is a schematic diagram of coil wiring of the present invention.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings.

The single-chamber automatic cutting machine shown in Figure 1-7 cuts through the electromagnetic friction reducing mechanism through the window, including a vacuum cavity cavity 10, and the surroundings of the vacuum cavity cavity 10 are sealed, and a circular through hole is opened at the bottom of the cavity for use. When the vacuum pipeline 6 is installed, there is an opening above the cavity for laying bristle bricks 3, and a cloth transmission mechanism is provided inside the cavity. The cloth conveying mechanism includes a main beam 7, a track composed of an upper slide rail 1a and a lower slide rail 1b, a bristle brick support plate 4, a bristle brick 3, a sprocket 9, a sprocket driving shaft 8a, and a sprocket driven shaft 8b , transmission chain 2, polytetrafluoroethylene slide bar 11. The main beam 7 is horizontally suspended and installed inside the vacuum chamber 10. An upper slide rail 1a is installed above the main beam 7, and a lower slide rail 1b is installed below the main beam 7. Both the upper slide rail 1a and the lower slide rail 1b are made of aluminum alloy. Rectangular cavity-like structure of the material, and symmetrically distributed up and down with respect to the main beam 7, the top surface of the upper slide rail 1a and the bottom surface of the lower slide rail 1b are equipped with an annular polytetrafluoroethylene slide bar 11 with a very low friction coefficient. The surface of the polytetrafluoroethylene slide bar 11 supports the bristle brick support plate 4, the bristle brick support plate 4 is lath-shaped, and the top of the bristle brick support plate 4 has an installation hole 5 for installing the bristle brick 3 , the bottom of the bristle brick support plate 4 is arc-shaped and is used to install the permanent magnet 12. The two ends of the bristle brick support plate 4 are connected to the transmission chain 2 respectively, and the sprocket drive shaft 8a drives the transmission chain 2 through the sprocket wheel (9). , and then drive the bristle brick support plate 4 to circulate and feed around the annular polytetrafluoroethylene slide bar 11 to realize the cloth transmission.

The upper slide rail 1a is provided with mounting openings 14 for silicon steel cores 15 at regular intervals on its side for installing silicon steel cores 15 , on which coils 13 are wound. The coil 13 and a single silicon steel core 15 form an electromagnet 16, and the electromagnet 16 is provided with multiple on a single upper slide rail 1a, and the coil 13 of each electromagnet 16 is connected in parallel to form an electromagnet 16. The electromagnet coil parallel group 17 connects the electromagnet coils 13 on each upper slide rail 1a in parallel to form an overall coil parallel group 18, and the energization direction of the coil 13 should ensure that the direction of the magnetic field produced by the coil energization is consistent with the described The directions of the magnetic fields produced by the permanent magnets 12 are opposite to each other with the magnetic poles of the same name, so as to generate opposite forces.

When the equipment of the present invention starts to work, lay multi-layer fabrics on the bristle bricks, and lay an airtight plastic film on the uppermost layer of fabrics, turn on the vacuum pump to extract the air inside the vacuum chamber from the vacuum pipe, and at this time, a negative air is formed in the vacuum chamber. The cloth and film are adsorbed on the bristle bricks by pressure, and at the same time, the bristle support plate is in contact with the PTFE slide bar, and the electromagnet coil is energized. The magnetic field generated by the electromagnet is just in line with the permanent magnet installed at the bottom of the bristle support plate. The direction of the magnetic field is the same, and the interaction force generated can subtly offset the negative pressure, thus greatly reducing the positive pressure and friction between the bristle support plate and the PTFE slider, so when the cloth is cut Without releasing the negative pressure in the vacuum chamber, the next batch of fabrics can be transferred and cut directly, so that the automatic cutting machine can cut through the window and improve the cutting efficiency.

The content described in the embodiments of this specification is only an enumeration of the implementation forms of the inventive concept. The protection scope of the present invention should not be regarded as limited to the specific forms stated in the embodiments. Equivalent technical means that a person can think of based on the concept of the present invention.

Claims (2)

1. The single-chamber automatic cutting machine cuts through the window electromagnetic friction-reducing mechanism, including a closed vacuum chamber (10), which is connected to a vacuum pipeline (6) for vacuuming, and the vacuum chamber There is an opening for laying bristle bricks (3) on the top of the body (10), and the vacuum chamber cavity (10) is provided with a cloth transmission mechanism, which is characterized in that: The cloth conveying mechanism includes a main beam (7), a track, a bristle brick support plate (4), a bristle brick (3), a sprocket (9), a sprocket driving shaft (8a), and a sprocket driven shaft (8b) , transmission chain (2), slide bar (11); The main beam (7) is horizontally suspended and installed inside the vacuum cavity (10), and several circular tracks are installed longitudinally on the main beam (7). The plane where the tracks are located is perpendicular to the main beam (7). The upper and lower rails (1a) and lower rails (1b) above and below the beam (7); the rails are parallel to each other, and the two rails on the sides are provided with transmission chains (2), and the two rails of the transmission chain (2) The ends are respectively connected to the sprocket driving shaft (8a) and the sprocket driven shaft (8b) through the sprocket (9); The surface of the upper slide rail (1a) and the lower rail (1b) is provided with a slide bar (11), and the surface of the slide bar (11) supports the bristle brick support plate (4), and the bristle brick support plate (4) is in the form of Slatted, the top of the bristle brick support plate (4) is equipped with a bristle brick (3), and the bottom of the bristle brick support plate (4) is equipped with a permanent magnet (12); An electromagnet (16) is arranged on the upper slide rail (1a), and the electromagnet (16) and the permanent magnet (12) are arranged in the direction opposite to the magnetic pole of the same name; The two ends of the bristle brick support plate (4) are respectively connected with the transmission chain (2), and the sprocket drive shaft (8a) drives the transmission chain (2) through the sprocket (9), and then drives the bristle brick support plate (4) along the Orbit circular feeding realizes cloth conveying. 2. Electromagnet (16) as claimed in claim 1, is characterized in that: described electromagnet (16) is made up of silicon steel core (15) and coil (13), and electromagnet (16) is on a single upper slide rail (1a) is provided with a plurality of, and the coil (13) of each electromagnet (16) is connected in parallel to form an electromagnet coil parallel group (17), and the electromagnet on each upper slide rail (1a) The iron coils (13) are connected in parallel to form an overall coil parallel group (18).