BG3694U1 - Multifunctional automatic sewing machine for clothing and thin plexiglas sheet products - Google Patents

Abstract

This utility model relates to a multifunctional automatic sewing machine with programmable stitches for the combined production of protective medical masks, protective medical suits and protective face shield of thin plexiglass sheet, as well as for all types of clothing. The main elements are a sewing and/or cutting head (1), fabric stands (118), one or two presses with a rectangular shape, with a fixed bottom plate (92) and a movable top plate (93). On both sides of the press there are fabric clips (66 and 97) and a guillotine (67). Next to each press is arranged a vacuum former (19) with an aspirator (240), a gripper (25) for gripping and moving the finished parts and an optical system, which consists of an overhead projector (21) and a mirror (23).

Description

Field of technology

This utility model applies to a multifunctional sewing machine with programmable stitches for the combined production of protective medical masks, protective medical suits and protective plexiglass helmets, as well as any type of clothing that requires the implementation of pre-set programmable stitches. Depending on the technology of execution can work completely robotic, without human intervention.

BACKGROUND OF THE INVENTION

In the current sewing machines for the production of clothing and products made of thin Plexiglas are used with patterns for cutting and sewing, made of different materials. A separate template is required for each different operation and for each size, which slows down, complicates and increases the cost of the sewing and cutting process.

The disadvantages of the sewing machines used are many, such as the fact that the insertion and removal of the part from the template is manual. The templates used have a cover, which slows down the process and makes the work more expensive.

Technical essence of the utility model

This utility model solves the following problems:

- the machine saves the pre-cutting of the fabric by automatically pulling the fabric directly from the top and automatically cutting it by means of an automatic guillotine;

- provides automatic gluing and breaking of the material from which the individual parts are made;

- provides automatic transportation of the material thus prepared to the place for cutting (performed by a knife attached to the sewing head) and sewing;

- provides a vacuum pattern during the cutting and sewing process, which keeps the part on itself and does not allow displacement and deformation of the part;

- provides an optical template for cutting and sewing, which is projected on the pre-prepared material;

- provides automatic removal of the finished part from the template.

The multifunctional sewing machine for clothes and products made of thin Plexiglas, a head for sewing and / or cutting, a work surface and a metal structure, comprising a group of one or more fabric stands on which one or more piles of fabric are located on the side wall on the work surface. On a metal structure there is a rectangular press, which consists of a fixed lower plate and a movable upper plate, the lower plate of the press has a heater and is connected to sources of steam, vacuum and air, and the upper plate of the press is connected to a source. on vacuum. Between the fabric stand and the first side of the press, a rectangular comb-type clip is fixed, the length of which is substantially equal to the width of the press. Between the clip and the press is a guillotine whose length is substantially equal to the width of the press. A clip is arranged on the work surface, parallel to and adjacent to the second side of the press, which is movably connected to two rails for linear horizontal movement along the X axis, which are arranged parallel to each other on the two long sides of the press. The upper plate of the press is connected to a rail for linear vertical and horizontal movement, which is attached to the metal structure, and the upper plate is connected to a stepper motor for vertical movement, which is located on the metal structure. Next to each press is a rectangular vacuum template, which consists of two layers of thin stainless steel sheet, the lower layer of the vacuum template has grooves, and the upper layer has holes for vacuum and channels. The side of the vacuum template, which is adjacent to the press, is movably connected to a side linear motion rail, which is located between the press and the template. Behind the desk

3879 Descriptions to utility registration certificates № 06.1 / 15.06.2020 field of the head is located rear rail for linear horizontal movement. On the short side of the rectangular vacuum template adjacent to the press is an aspirator, which is fixed to the vacuum template. The aspirator is a rectangular channel with two valves and the valve is located on the short side of the aspirator and the valve is located on the long side of the aspirator. The valve is in contact with one or both vacuum nozzles which are connected to a vacuum distributor which is located on the rear rail, and the valve is in contact with one or both vacuum nozzles which are located on the side rail for linear linear motion. In the working position, the vacuum template is fixed and locked to the rear rail by one or more air cylinders. The multifunctional sewing machine also includes a gripper, which consists of four main long spokes with vacuum hoses and a main axis for linear vertical movement, and at the lower end of the main long spokes with vacuum hoses there are vacuum nozzles, whereby the long spokes with vacuum hoses are assembled. at the top and open at the bottom. In its upper part the long spokes with vacuum hoses are attached to the widening of the main axis, as a leading axis passes through the main axis, and a control chamber is attached at the lower end of the leading axis. The spokes are connected by movable connections to the guide axle and to the long spokes with rigid vacuum hoses, and a motor for linear vertical movement of the axle is fixedly located in the upper part of the axle. The tripper is connected by a short rail plate, a motor for vertical movement of the axle is located on the short rail, where the short rail is movably connected to a long rail by means of a plate, a motor for linear horizontal movement is located in the rear part of the short rail, and on the left side of the long rail is a motor for linear horizontal movement of the gripper. The long rail is fixed on the metal structure, and above the vacuum template is an optical system, which consists of an overhead projector and a mirror.

In one embodiment, the lower plate of the press and the upper plate of the press have interchangeable pads with different relief, and in another embodiment near the work surface are located displays for control and auxiliary table.

Explanation of the attached figures

Figure 1 is a perspective view of the multifunction sewing machine subject to the present utility model.

Figure 2 is a perspective view of the press.

Figure 3 is a perspective view of the gripper.

Figure 4 is a view of the vacuum template.

Figure 5 is a side view of the side rail for moving the vacuum template.

Examples of implementation of the utility model

Figure 1 shows a perspective view of the multifunction machine subject to the present utility model.

The main element of each sewing machine is a sewing head 1. The sewing heads 1 can be of different types: sewing head with needle and thread, sewing head with ultrasonic welding seam. The sewing head 1 can be equipped with different types of knives, such as a laser knife, an ultrasonic knife and a mechanical knife.

On the side of the work surface are located one or more fabric stands 118. The fabric stand can be for one or more fabric piles 94, which fabric can be any textile material - fabric, adhesive material, lining, non-woven fabric, etc. . Figure 1 shows four fabric stands 118 - two on the left side of the sewing machine and two on the right side of the sewing machine.

Next to the cannons with fabric 94, a fixed clip-type comb 66 is located horizontally. Immediately after the clip 66 and parallel to it is placed a guillotine 67.

A press with a movable top plate is arranged parallel to the guillotine 67. Figure 1 shows the left and right presses, which are identical. The press is located on a metal structure 91, on which are mounted a movable upper plate 93, a fixed lower plate 92, a rail for linear vertical and horizontal movement along the X, Y and Z axes 107, which is attached to the metal structure 91, a stepper motor with a screw 112 for lifting and lowering the top plate 93.

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A clamp 97 is arranged on the work surface, parallel to and adjacent to the second side of the press, which is movably connected to two busbars 61 for linear horizontal movement along the X axis, which are arranged parallel to each other on the two long sides of the press. The clip 97 is a comb type and aims to pinch and pull the required length of fabric / fabrics, holding it until the moment of pressing. The clip 97 is gripped laterally on two rails 61 along the bottom plate 92 and moves along the length of the press. The clip 66 serves to hold the fabric (s) after they have been developed by the fabric cannons 94 and pulled by the clip 97. The guillotine 67 cuts the fabric after pulling. After the fabric is pulled out and placed between the two plates of the press, between the upper plate 93 and the lower plate 92 and the press fixes it, the guillotine falls and cuts the fabric (s).

The press performs preparatory operations such as breaking, fixing, smoothing, forming and gluing different types of textile materials. The upper plate 93, in addition to pressing the part against the lower plate 92, then sucks it by lifting, transporting and placing the part on the vacuum template 19. In turn, the vacuum template 19 sucks the material prepared in the press by fixing it on itself. by suction - vacuum, after which the sewing cycle begins. A vacuum 89 is applied to the upper plate 93. On the bar 107, the upper plate 93 of the press moves horizontally forward to the vacuum template 19 and back to the starting position for a new cycle.

The lower plate of the press 92 has a heater and sources of steam, vacuum and air. The bottom plate has several functions - it can be molded with pressure, such as gluing, smoothing or molding pleats or other type of refraction. Performs preparatory operations on the part before sewing. In this case, as shown in the image, the bottom plate is prepared to break the pleats of protective medical masks. The upper plate 93 of the press has a source of vacuum 89 and replaceable pads, with different relief - the pads of the molds can be changed. In this case, the form is for breaking and fixing the pleats of medical masks, which are prepared on a block. The upper plate 93 can be moved back and forth through the bar 107 by lifting the already pressed fabric by vacuum and moving it on the vacuum template 19. The up and down movement of the upper plate 93 is performed by means of a stepper motor with a screw 112.

Figure 2 shows a detailed perspective view of the press in the open position, which is a key element of innovation. The upper plate 93 and the lower plate 92 have replaceable pads with different relief. In Figure 1, on the left side, the clips 66 and 97 are shown in the position where they are next to each other before the fabric is unrolled, and on the right side are shown in their end position after the fabric is pulled out.

The stepper motor with screw 112 moves the upper plate 93 up and down. The drive initially works by lowering the upper plate 93 to the lower plate 92 when there is a textile part between them. This step is shown with the press in the right part of Figure 1. After pressing, the stepper motor with screw 112 raises the upper plate 93, then activates the bar 107 by moving the upper plate 93 to a position above the vacuum template 19, then lowers the upper plate 93 to the vacuum template 19, leaving the prepared material. Next, the top plate 93 is lifted and returned to its original position as shown on the left in Figure 1.

The vacuum template 19 is a major innovative element of the sewing machine according to the present utility model. It, together with the entire vacuum supply and distribution system, guarantees the entire sewing process by fixing the part on itself. Figure 4 shows the vacuum pattern 19, which consists of two layers of thin stainless steel with a lower layer 241 and an upper layer 239, the upper layer 239 being on holes 238 with figurative grooves 237, where the needle sews. The lower layer 241 is dense, with only channels 237, without holes 23 8. The channels 237 serve to pass the needle during sewing, and the holes 238 serve to pass air (vacuum). Between the two layers passes air, which is sucked from a side aspirator 240 located at the end of the short side, respectively, on the left vacuum template 19 - in Figure 1 on the short left side, and on the right vacuum template 19 - in Figure 1 on the short right country. The aspirator 240 is a rectangular channel, with two valves 244 and 242, on the short and long side, respectively. These valves 244 and 242, when operating the vacuum template 19, are connected to the vacuum nozzles 9 and 8 (in Figure 5). Accordingly, the valve on the long side

3881 Descriptions to utility registration certificates № 06.1 / 15.06.2020

242 is connected to the vacuum nozzle 8 of the lateral linear travel bar 17, and the valve on the short side 244 when moving forward is connected to the vacuum nozzle 9 of the rear rail 7. After completing the entire sewing cycle, the vacuum template 19 goes to starting position.

The system 147 holds the template laterally, when moving back and forth, moving it forward to the bus 7 and back. The system consists of two air cylinders 12 for fixing laterally to the lateral linear travel rail 17 when moving back and forth. There is an internal nozzle 8, which laterally supplies a vacuum to the valve 242, to the openings of the template 19. In this way, through small openings on the surface of the template 19, the part is sucked. The vacuum is continuously supplied from the side rail 17, until the vacuum template 19 is glued to the short side of the aspirator 240, to the nozzle 9, which is located at the end of the rail 7. In this way the vacuum is transferred from the side rail to the side linear movement 17 to the rear rail 7, the textile part remaining permanently fixed to the vacuum pattern 19 when moving the vacuum pattern 19.

In Figure 1, a vacuum distributor 132 is located on the rear rail 7, which switches the vacuum to the left or right vacuum pattern 19 - the sewing machine has 2 patterns on 2 workstations on the left and right, respectively.

Air cylinders 11 are fixed to the rear rail 7 for fixing and locking when moving the vacuum template 19. The rear rail 7 is located behind the working field of the sewing head 1, and this rear rail 7 is driven by both the X axis and the Y axis. The vacuum template 19 is fixed to this rear rail 7 by means of two air cylinders 11, which press and lock the vacuum template 19 to the rear rail 7. At the same time, at both ends of the rear rail there are vacuum nozzles 9 which suck the air under the textile part, keeping it static on the vacuum pattern 19 during sewing. The vacuum nozzle 9 meets the pattern when moving forward.

The lateral linear travel bar 17 moves back and forth from the starting position of the vacuum pattern 19, aiming to occupy it pores as it moves forward from the starting position, to the busbar 7 at the beginning of the sewing cycle, and backwards, from the busbar 7 to the exit position. position, at the end of the sewing cycle, the vacuum being applied laterally at all times to the vacuum template 19.

Another main element of the multifunctional sewing machine is the tripper holder, arranged 25, shown in detail in Figure 3. It consists of four main spokes with vacuum hoses, at the lower end of which there are vacuum nozzles ΊΊ and four short internal auxiliary spokes 208. The spokes are assembled at the top and open at the bottom. In its upper part the spokes are attached to the widening of the main axis for linear vertical movement 35. A movable guide axis 206 passes through the main axis 35, and a control chamber 33 is fixed at the lower end of the guide axis 206. The spokes 208 are connected by movable connections with the guide shaft 206 and with the main long spokes with rigid vacuum hoses. The guide shaft 206, at the lower end of which the chamber 33 is attached, aims to open and close the vacuum nozzles 27 as it moves up and down, by gripping the spokes 208, which in turn are attached to the main spokes with rigid vacuum hoses that remove the vacuum from its nozzles ΊΊ. Axis 35 drives the gripper 25 in height. The quality control camera 33 aims to software check for sewing or other type of defects by capturing an image and analyzing the image and signaling for any defects.

The drive shaft 206 is serrated on one side and is driven by a gear motor 210. The motor 210 is fixed on the axle 35 in its upper part. Axis 206 passes through the center of axis 35. Axis 35 is the main axis of the gripper 25, which aims to raise and lower the gripper 25 - to raise it when the tripper has already sucked the part of the vacuum template (19) and lower the gripper, when the part is to be placed on an auxiliary table 119. The shaft 35 is toothed and is driven by the motor 209 by a gear. At the lower end of the shaft 206 there is a chamber 33, which aims to check the quality of the products, as well as to position correctly the vacuum nozzles ΊΊ of the gripper 25 above the finished part.

The auxiliary inner spokes 208 are mounted on movable connections - inwards for the shaft 206, and outwards for the long spokes with rigid vacuum hoses and serve to open and close the vacuum nozzles ΊΊ. When the axle 206 moves upwards, the vacuum nozzles на open sideways, and when moving

3882 Descriptions to utility registration certificates № 06.1 / 15.06.2020 we on the axle 206 down, the vacuum nozzles при are retracted to the chamber 33. The vacuum nozzles ΊΊ are intended to vacuum the finished already sewn part by lifting it from the vacuum pattern 19 and place it on the auxiliary table 119, which completes the sewing cycle. The vacuum in the template is turned off the moment the gripper 25 lifts the product. The plate 201 secures the gripper 25 to the rail 120, which is driven by a motor 212 with a screw pair. The short rail 120 is attached to the long rail 24 by the plate 122. A motor 211 is arranged on the long rail 24, which drives the plate 122 by means of a screw pair, thus moving the gripper left and right. The long rail 24 is fixedly mounted on the metal structure 91. The fastening element 122 provides movement in four directions of the gripper 25.

Above the vacuum template 19 is an optical system consisting of a projector 21 and a mirror 23. The projector 21 is used to project the image received from the cad-cam system of the part directly onto the vacuum template 19. The image that is projected, determines the position of the place where the part should be placed on the vacuum template 19. Allows instant change of dimensions, details and positions, saving a lot of time and cost. The mirror 23 refracts the image projected by the overhead projector 21 so that the image falls on the vacuum template 19. The image indicates exactly where to position the part on the vacuum template 19.

Using the utility model

This utility model relates to a multifunctional sewing machine with programmable seams for the production of medical protective clothing, in particular protective masks, and has the ability to cut transparent plexiglass protective helmets. The machine has the ability to work with both a sewing head with a needle and an ultrasonic sewing head, it can be added as an accessory laser or other type of knife. The machine can perform all kinds of operations for the production of clothing, suitable for working with a template and pre-programmed seams for production, can sew, join, and cut - works on the principle of plotters.

This multifunctional machine can perform the preparatory operations of the products above as follows:

Operations for the production of protective clothing - overalls type

1. Joining seams on the upper parts of the overalls - sleeve, side seams on the back and front, shoulder seams, as well as preparation of the hood - joining the two parts of the hood.

2. Attach the zipper to the front, front of the zipper strap.

3. Connecting outer and inner seams of pants - the lower part of the overalls. Mask production operations

1. Breaking the pleats of the mask.

2. Fixing the pleats with a seam.

3. Trim the sides with additional tape.

4. Cut holes for stringing an elastic band at the ends of the mask.

The most important innovative element consists in the fully automated feeding and removal of the part to the sewing head, as well as the automatic gluing and breaking of the part (when the technology allows), introduction for the first time of a multifunctional vacuum template for transporting the part in the sewing process and cutting.

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List of designations

Sewing and cutting head

Rail for linear horizontal movement

Vacuum nozzles

Vacuum nozzles

Air cylinders

Air cylinders

Rail for lateral linear motion

Vacuum template

Strobe projector

Mirror

Long rail

Gripper

Vacuum nozzles

Control camera

Main axis for linear vertical movement

Control display

Comb type clip

Guillotine

Vacuum source

Metal construction

Bottom plate of the press

Top plate of the press

Top with fabric

A pinch

Rail for linear vertical and horizontal movement

Stepper motor for vertical movement

Fabric stand

Auxiliary table

Short rail

Plank

Vacuum distributor

Template side retention system

Plank

Leading axis

Short auxiliary spokes

Main axle drive motor

Drive axle drive motor

Motor

Motor for linear horizontal movement

Template channels

Pattern holes

Top layer of the template

Aspirator

Bottom layer of the template

Aspirator valve

Aspirator valve

Claims (3)

Claims A multifunctional sewing machine for clothing and thin plexiglass articles, comprising a sewing and / or cutting head (1), a work surface and a basic metal structure (91), characterized in that it comprises the following elements: a group of one or more fabric stands (118) on which are placed one or more fabric piles (94) located on the side wall of the work surface; on the metal structure (91) is a rectangular press, which consists of a fixed lower plate (92) and a movable upper plate (93), the lower plate (92) of the press has a heater and is connected to steam sources, vacuum and air, and the top plate (93) of the press is connected to a vacuum source (89); between the fabric stand (118) and the first side of the press, a rectangular comb-type clip (66) of substantially equal width to the width of the press is fixed, a guillotine is located between the clip (66) and the press. ) whose length is substantially equal to the width of the press; on the work surface, parallel to and adjacent to the second side of the press, there is a clip (97) which is movably connected to two rails (61) for linear horizontal movement along the X axis, which are located parallel to each other on the two long sides. of the press; the upper plate (93) of the press is connected to a rail for linear vertical and horizontal movement (107), which is attached to the metal structure (91), and the upper plate is also connected to a stepper motor for vertical movement (112), which is located on the metal structure (91); a rectangular vacuum template (19) is located next to each press, which consists of two layers of thin stainless steel, the lower layer (241) of the vacuum template (19) having grooves (237) and the upper layer (239) having holes. for vacuum and channels (238), wherein the side of the vacuum template (19) adjacent to the press is movably connected to a side linear travel bus (17) which is located between the press and the template (19) and behind the working field of the head (1) is a rear rail for linear horizontal movement (7); in addition, on the short side of the rectangular vacuum template (19) adjacent to the press is an aspirator (240) which is fixed to the vacuum template (19), the aspirator (240) being a rectangular channel with two valves (244 and 242), on the short side of the aspirator (24) the valve (244) is located, and on the long side of the aspirator (240) the valve (242) is located, whereby the valve (244) is in contact with one or both vacuum nozzles (9), which are connected to a vacuum distributor (132), which is located on the rear rail (7), and the valve (242) is in contact with one or both vacuum nozzles (8), which are located on the rail for lateral linear motion (17), at which in the operating position the vacuum template (19) is fixed and locked to the rear rail (7) by one or more air cylinders (11); the multifunctional sewing machine also includes a gripper (25), which consists of four main long spokes with vacuum hoses and a main axis for linear vertical movement (35); at the lower end of the main long spokes with vacuum hoses there are vacuum nozzles (27), the long spokes with vacuum hoses are assembled at the top and open at the bottom, and at the top the long spokes with vacuum hoses are clamped to the widening of the main axis (35), wherein a leading axis (206) passes through the main axis (35), and a control chamber (33) is fixed at the lower end of the leading axis (206), the spokes (208) being connected by movable connections to the guide shaft (206) and to the long spokes with rigid vacuum hoses; in the upper part of the axle (35) there is a motor for linear vertical movement (210) of the axle (206), the tripper (25) is connected by a bar (201) to a busbar (120), and a motor is located on the short rail for vertical movement (209) of the axle (35), the short rail (120) is movably connected to a long rail (24) by means of a plate (122), in the rear part of the short rail (120) there is a motor for linear horizontal movement ( 212), on the left side of the long rail (24) there is a motor for linear horizontal movement (211) of the tripper (25), the long rail (24) being fixed on the metal structure (91), above the vacuum template (19). ) is an optical system consisting of an overhead projector (21) and a mirror (23). Multifunctional sewing machine according to claim 1, characterized in that the lower plate (92) of the press and the upper plate of the press (93) have interchangeable pads with different relief. Multifunctional sewing machine according to Claim 1, characterized in that control displays (50) and an auxiliary table (119) are arranged close to the working surface.