CN216688591U - Sewing machine - Google Patents

Abstract

The utility model discloses a sewing machine, which comprises a second motor fixed on a mounting plate, wherein an output shaft of the second motor is connected with a first clamping jaw; a feeding plate for conveying an elastic band is arranged in the middle of the rack, and an ultrasonic welding head fixedly connected with the rack is arranged below the feeding plate; the first clamping jaw clamps the head part of the rubber band at the output port of the feeding plate, the first clamping jaw is pulled out and then is rotatably placed on the rubber band body of the feeding plate, and the head part of the rubber band and the rubber band are welded into a ring through the ultrasonic welding head. The utility model can automatically clamp, pull out and rotate the rubber band head to be placed on the rubber band body for welding, the rubber band ring joint after welding is neat and flat, and the sewing processing quality of the rubber band ring is obviously improved.

Description

Sewing machine

Technical Field

The utility model relates to an industrial sewing machine, in particular to a sewing machine for sewing and fixing an elastic ring.

Background

The production of elastic rings, the usual production process is to take bundled or coiled elastic bands as raw materials, cut them by sections and sew them into rings, in the production process, it is usually done by hand or by separate operation of a plurality of single machines with different functions. The utility model discloses an automatic rubber band of rubber band machine takes material feeding unit, correspond patent number 201020269752.5, utility model discloses an automatic rubber band of rubber band machine takes length fixing device, correspond patent number 201020269792.X, utility model discloses an automatic rubber band machine's blank device, correspond patent number 201020269783.0, utility model discloses an automatic rubber band of rubber band machine takes lopping device, correspond patent number 201020269797.2, utility model discloses an automatic rubber band of rubber band machine draws material device, correspond patent number 201020269802.X, a full-automatic rubber band processing equipment that collection arrangement pay-off, the fixed length cuts, concatenation is made as an organic whole, can accomplish the whole production flow that the rubber band was made in full-automatic rubber band area, but this full-automatic rubber band processing equipment still has further improved potentiality in processability, production assembly.

Disclosure of Invention

Aiming at the technical problem that the two ends of an elastic band are not easy to align and affect the sewing quality in the sewing process of the elastic band, the utility model provides the sewing machine, which can align and weld the two ends of the elastic band and then sew and reinforce the elastic band, thereby greatly improving the processing quality of the elastic band.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a sewing machine comprises a second motor fixed on a mounting plate, wherein an output shaft of the second motor is connected with a first clamping jaw; a feeding plate for conveying an elastic band is arranged in the middle of the rack, and an ultrasonic welding head fixedly connected with the rack is arranged below the feeding plate; the first clamping jaw clamps the head of the rubber band at the output port of the feeding plate, the rubber band head is placed on the rubber band body of the feeding plate in a rotating mode after being pulled out, and the rubber band head and the rubber band are welded into a ring through the ultrasonic welding head.

In order to optimize the technical scheme, the utility model also comprises the following improved technical scheme.

The upper part of the frame is provided with a cutter and a cutter cylinder.

Install the first cylinder that is used for carrying the rubber band area in the recess of feed plate, install first motor on the left side board, first motor passes through the first cylinder of hold-in range drive and rotates.

Install first cylinder on the left side board, first cylinder passes through first connecting plate drive transmission shaft and rotates, is connected with the swing arm on the transmission shaft, is equipped with the second cylinder that is used for pressing the material on the swing arm.

And a third motor is fixed at the bottom of the base and drives the mounting plate to move along the first sliding rail through a synchronous belt transmission mechanism.

A first rodless cylinder is installed on the right side of the base, and a second clamping jaw capable of sliding is arranged on the first rodless cylinder.

Compared with the prior art, the sewing machine provided by the utility model can automatically clamp, pull out and rotatably place the head part of the elastic band on the elastic band body for fusion welding through the second motor and the first clamping jaw, the joint of the ring of the elastic band after fusion welding is neat and flat, and the sewing processing quality of the elastic band is obviously improved.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a perspective view of an ultrasonic welding mechanism.

Fig. 3 is a schematic view of another angle of fig. 2.

Fig. 4 is a perspective view of the feed clamping mechanism.

Fig. 5 is a schematic view of another angle of fig. 4.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 1 to 5 are schematic structural views of the present invention.

Wherein the reference numerals are: the welding machine comprises a rack 1, a first air cylinder 2, a first connecting plate 3, a connecting block 4, a transmission shaft 5, a swing arm 6, a second connecting plate 7, a first motor mounting position 8, a synchronizing wheel 9, a synchronous belt 10, a second roller 11, a cutter air cylinder 12, a cutter 13, an ultrasonic welding head 14, a machine base 15, a third motor 16, a mounting plate 17, a third air cylinder 18, a first upper clamping plate 19a, a first lower clamping plate 19b, a first rodless air cylinder 20, a second air cylinder 21, a second upper clamping plate 22a, a second lower clamping plate 22b, a front side plate 23, a first slide rail 24, a left side plate 25, a second motor 26, a right side plate 27, a third slide rail 28, a feeding plate 29, a second slide block 30 and a third connecting plate 32.

The sewing machine comprises the ultrasonic welding mechanism and the feeding clamping mechanism, wherein the feeding clamping mechanism clamps and pulls out the input elastic band and rotates to the ultrasonic welding mechanism for connection, so that subsequent sewing fixation is facilitated.

As shown in fig. 1, 2 and 3, the ultrasonic welding mechanism includes a feeding mechanism, a welding mechanism and a cutting mechanism on the frame 1.

The feeding mechanism is positioned on the left side of the feeding structure and comprises a material rod for mounting an elastic band and a feeding conveying guide rail for guiding the input of the elastic band.

The feeding structure comprises a left side plate 25 and a right side plate 27 which are fixed on the frame 1, a feeding plate 29 is arranged between the left side plate 25 and the right side plate 27, and a first roller is arranged in a groove of the feeding plate 29. The first motor is arranged on the first motor mounting position 8 at the inner side of the left side plate 25. A synchronizing wheel 9 is arranged on an output shaft of the first motor, and the synchronizing wheel 9 drives the first roller to rotate through a synchronizing belt 10 and is used for driving the rubber band to output.

The first cylinder 2 is arranged on the left side plate 25, a piston rod of the first cylinder 2 is connected with the first connecting plate 3, the first connecting plate 3 is fixedly connected with the connecting block 4 through a screw, the middle part of the connecting block 4 is provided with a groove, one end of the transmission shaft 5 is fixed in the groove, and the other end of the transmission shaft is fixed on the right side plate 27 through a shaft sleeve. Two swing arms 6 are arranged on the transmission shaft 5, and the swing arms 6 are connected with two ends of the second roller 11. The first cylinder 2 retracts to drive the first connecting plate 3 and the transmission shaft 5 to rotate, so that the second roller 11 is driven to move downwards, and the elastic band on the first roller is pressed to assist feeding movement.

The welding structure comprises an ultrasonic welding head 14 arranged between the left side plate 25 and the right side plate 27, and the ultrasonic welding head 14 is positioned at the bottom surface of the feeding plate 29 for conveying the elastic band. The rubber band head is placed on the rubber band belt of the feeding plate 29 after being pulled out, and the ultrasonic welding head 14 is used for welding the rubber band head and the rubber band belt together to form a rubber band ring.

The cutting structure comprises a cutter cylinder 12 positioned at the upper end of the ultrasonic welding mechanism, and a piston rod of the cutter cylinder 12 is connected with a cutter 13. When the head of the elastic band is welded with the elastic band, the cutter cylinder 12 drives the cutter 13 to cut off the elastic band ring downwards.

As shown in fig. 4 and 5, the lower end of the machine base 15 is provided with a third motor 16, and the mounting plate 17 can be driven to slide left and right on the first slide rail 24. A second motor 26 is arranged on the mounting plate 17, and an output shaft of the second motor 26 is connected with the first clamping jaw and drives the first clamping jaw to rotate. Mounting plate 17 may move second motor 26 and first jaw along first slide 24. First clamping jaw and second motor 26 are located first slide rail 24 rightmost side when pressing from both sides the rubber band head, and second motor 26 moves one section along first slide rail 24 left behind rubber band head and the butt fusion of rubber band area body, lets out the operating position of second clamping jaw.

The first jaw comprises a third cylinder 18, a first upper jaw 19a and a first lower jaw 19 b. The first upper clamp plate 19a is fixedly mounted on the front end surface of the third cylinder 18, and the piston rod of the third cylinder 18 is connected with the first lower clamp plate 19 b. The piston rod of the third cylinder 18 retracts to drive the first lower clamping plate 19b to move upwards, and the first lower clamping plate and the first upper clamping plate 19a are matched to clamp the head of the rubber band. After the second motor 26 drives the first clamping jaw to rotate, the head of the rubber band can be pulled out and rotated to enable the head of the rubber band to be attached to the body of the rubber band.

The right side of the feeding clamping mechanism is provided with a first rodless cylinder 20, a second sliding block 30 is sleeved on the first rodless cylinder 20, a third sliding rail 28 is arranged on the lower side of the second sliding block 30, a second connecting plate 7 is fixedly arranged on the upper end face of the second sliding block 30, the upper end face of the second connecting plate 7 is connected with a third connecting plate 31, and the third connecting plate 31 is connected with a second clamping jaw. The first rodless cylinder 20 may drive the second jaw to slide back and forth along the third slide rail 28.

The second clamping jaw comprises a second air cylinder 21, a second upper clamping plate 22a and a second lower clamping plate 22b, the cylinder body of the second air cylinder 21 is fixedly connected with the second lower clamping plate 22b, and the piston rod of the second air cylinder 21 is connected with the second upper clamping plate 22 a. The piston rod of the second cylinder 21 retracts to drive the second upper clamping plate 22a to move downwards, and the second upper clamping plate and the second lower clamping plate 22b are matched to clamp the elastic ribbon ring. When the first rodless cylinder 20 drives the second cylinder 21 to move backwards, the position of the second clamping jaw is kept away, so that the first clamping jaw can conveniently clamp the head of the rubber band. When the first rodless cylinder 20 drives the second cylinder 21 to move forwards, the second clamping jaw assists the first clamping jaw to clamp the elastic band.

The front side plate 23 of the feeding clamping mechanism is slidably mounted on the frame 1 through a second slide rail, and the feeding clamping mechanism is driven to move between a feeding position and a clamping position through a second rodless cylinder. The feeding clamping mechanism carries out welding operation when moving to the material clamping position; when the sewing machine moves to the material feeding position, the rubber band on the first clamping jaw and the second clamping jaw is conveniently fed to the sewing machine head for reinforcement.

During operation, the feeding clamping mechanism moves to the material clamping position, the first clamping jaw is located at the rightmost side of the first guide rail 24, and the second clamping jaw is located at the rear yielding position. The first clamping jaw clamps the head of the elastic band at the outlet of the feeding plate 29, and then the second clamping jaw rotates to pull out the head of the elastic band and place the head on the elastic band body of the feeding plate 29. After butt fusion structure fused rubber band head and rubber band area body, the blank structure downcuts the rubber band belt circle, and first clamping jaw removes one section distance left along first guide rail 24 afterwards, and the supplementary centre gripping rubber band ring of second clamping jaw forward movement. The first jaw is then moved a further distance to the left along the first rail 24 so that the welding position is located with the first jaw in the middle of the second jaw. And finally, the feeding clamping mechanism moves to a feeding position, so that the rubber band is conveniently conveyed to a sewing machine to sew and reinforce the welding position.

Claims (6)

1. A sewing machine comprising a second motor (26) fixed to a mounting plate (17), characterized in that: the output shaft of the second motor (26) is connected with the first clamping jaw; a feeding plate (29) for conveying an elastic band is arranged in the middle of the rack (1), and an ultrasonic welding head (14) fixedly connected with the rack (1) is arranged below the feeding plate (29); the first clamping jaw clamps the head of the elastic band at the output port of the feeding plate (29), the elastic band is rotationally placed on the elastic band body of the feeding plate (29) after being pulled out, and the head of the elastic band and the elastic band are welded into a ring through the ultrasonic welding head (14).

2. The sewing machine of claim 1, wherein: the upper part of the frame (1) is provided with a cutter (13) and a cutter cylinder (12).

3. The sewing machine of claim 1, wherein: a first roller for conveying an elastic band is installed in a groove of the feeding plate (29), a first motor is installed on the left side plate (25), and the first motor drives the first roller to rotate through a synchronous belt.

4. The sewing machine of claim 1, wherein: install first cylinder (2) on left side board (25), first cylinder (2) rotate through first connecting plate (3) drive transmission shaft (5), the transmission shaft on be connected with swing arm (6), swing arm (6) on be equipped with second cylinder (11) that are used for pressing the material.

5. The sewing machine of claim 1, wherein: a third motor (16) is fixed at the bottom of the base (15), the third motor (16) drives the mounting plate (17) to move along the first sliding rail (24) through a synchronous belt transmission mechanism.

6. The sewing machine of claim 5, wherein: a first rodless cylinder (20) is installed on the right side of the base (15), and a second clamping jaw capable of sliding is arranged on the first rodless cylinder (20).

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