CN108505232B

CN108505232B - Automatic folding mechanism and method and sleeve vent sewing equipment

Info

Publication number: CN108505232B
Application number: CN201711217376.8A
Authority: CN
Inventors: 阮积祥; 李广伟; 管星斌
Original assignee: Jack Sewing Machine Co Ltd
Current assignee: Jack Technology Co Ltd
Priority date: 2017-10-23
Filing date: 2017-10-23
Publication date: 2021-01-26
Anticipated expiration: 2037-10-23
Also published as: CN108505230B; CN108505228B; CN108505227A; CN108505231A; CN108505230A; CN108505226A; CN108505226B; CN108505232A; CN108505227B; CN108505231B; CN108505228A

Abstract

The invention provides an automatic folding mechanism which comprises a material placing plate with a material placing station, a baffle plate assembly positioned on the outer peripheral side of the material placing station, a material placing cavity formed by the material placing plate and the baffle plate assembly, a movable material folding poking piece and a rotatable material pressing poking piece, wherein the baffle plate assembly is provided with a positioning edge blocking part positioned on the outer peripheral side of the material placing cavity, the material pressing poking piece can be abutted against the positioning edge blocking part, and the material folding poking piece is positioned on the upper side of the baffle plate assembly and can move towards the direction close to or far away from the material placing cavity. In this application, location flange position in the baffle subassembly is located the outer periphery department in blowing chamber, consequently, after pressing the material plectrum and rotating and with location flange looks butt, can press the cut-parts to paste in baffle subassembly and press between the material plectrum to prop cut-parts straight and keep, later by roll over a part outward flange that the material plectrum will be located outside the blowing chamber on the cut-parts again and fold into the blowing chamber, and then accomplish the automatic hem to the cut-parts edge.

Description

Automatic folding mechanism and method and sleeve vent sewing equipment

The application is a divisional application, the application number of a parent application is 201710995576.X, the application date is 2017, 10 and 23, and the invention and creation name is 'an automatic folding mechanism and method, and sleeve fork sewing equipment'.

Technical Field

The invention relates to an automatic folding mechanism.

The invention also relates to an automatic folding method for folding the sleeve vent by using the automatic folding mechanism.

The invention also relates to sleeve vent sewing equipment comprising the automatic folding mechanism.

Background

Currently, the general steps for sewing the sleeve vent are as follows: 1. placing small cut pieces; 2. folding the small cut pieces to enable the rear ends of the small cut pieces to be folded to form sleeve fork sharp corners; 3. placing the large cut pieces, and clamping one part of the large cut pieces in the small cut pieces, wherein the other part of the large cut pieces is positioned above the small cut pieces; 4. and sewing the large cut piece and the small cut piece to finish the sewing of the sleeve vent. Thus, it can be seen that: the folding of the small cut pieces and the large cut pieces is a key step for sewing the sleeve vent, and the folding directly influences the sewing quality and the sewing efficiency of the sleeve vent. If the cut pieces are folded manually, the sewing quality and the sewing efficiency of the sleeve vent are directly and greatly reduced, and the requirements of modern production cannot be met.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide an automatic folding mechanism capable of folding a portion of a cut piece located outside a loading cavity into the loading cavity.

In order to achieve the purpose, the invention provides an automatic folding mechanism which comprises a material placing plate with a material placing station, a baffle plate assembly located on the periphery side of the material placing station, a material placing cavity formed by the material placing plate and the baffle plate assembly, a movable material folding shifting piece and a rotatable material pressing shifting piece, wherein the baffle plate assembly is provided with a positioning flange part located on the periphery side of the material placing cavity, the material pressing shifting piece can be abutted against the positioning flange part, and the material folding shifting piece is located on the upper side of the baffle plate assembly and can move towards the direction close to or far away from the material placing cavity. Here, the positioning flange portion is a third positioning flange portion on a third baffle plate that constitutes a part of the baffle plate assembly in the following embodiments.

Further, still include fixing support, be fixed in fixing support's back shaft, rotationally install drive gear, one end and the drive gear engaged with drive gear at the back shaft periphery drive rack and first drive actuating cylinder, the piston rod of first drive actuating cylinder can be followed and driven rack length direction is flexible and fixed with the other end that drives the rack, press the material plectrum and drive gear fixed mutually.

Preferably, the material pressing shifting piece is rotatably arranged on the baffle plate component.

The material discharging plate is installed on the fixed base plate, a first guide groove is formed in the fixed base plate, a first sliding piece penetrates through the first guide groove, two ends of the first sliding piece are respectively fixed with a piston rod of the sixth driving cylinder and the material folding shifting piece, and the piston rod of the sixth driving cylinder can stretch along the moving direction of the material folding shifting piece.

Furthermore, a plurality of first air suction holes are formed in the material placing plate.

Preferably, the air suction device further comprises an air suction assembly, the air suction assembly comprises an air suction machine and an air suction seat located right below the material discharge plate, an air suction cavity with an opening facing the material discharge plate is formed in the air suction seat, the material discharge plate covers the opening of the air suction cavity, the air suction machine is communicated with the air suction cavity through an air suction pipe, and the air suction cavity is communicated with the first air suction hole.

The invention also provides an automatic folding method, which uses the automatic folding mechanism, and the automatic folding method sequentially comprises the following steps:

s1, placing a cut piece (namely a small cut piece forming a sleeve fork in the following specific embodiment) in the material placing cavity, wherein one part of the outer edge of the cut piece is positioned outside the material placing cavity;

s2, rotating the pressing poking piece until the pressing poking piece is abutted against the positioning flange part in the baffle plate assembly, and pressing the cut piece between the baffle plate assembly and the pressing poking piece;

s3, moving the material folding poking sheet to the direction close to the material placing cavity until a part of the outer edge of the cut piece outside the material placing cavity is folded into the material placing cavity;

s4, the material pressing shifting piece reversely rotates and resets, and the material folding shifting piece moves and resets in the direction far away from the material placing cavity.

The invention further provides sleeve vent sewing equipment which is provided with a cut piece folding station, wherein the automatic folding mechanism is arranged on the cut piece folding station.

As described above, the automatic folding mechanism and method and the cuff vent sewing apparatus according to the present invention have the following advantageous effects:

in this application, location flange position in the baffle subassembly is located the outer periphery department in blowing chamber, consequently, after pressing the material plectrum and rotating and with location flange looks butt, can press the cut-parts to paste in baffle subassembly and press between the material plectrum to prop cut-parts straight and keep, later by roll over a part outward flange that the material plectrum will be located outside the blowing chamber on the cut-parts again and fold into the blowing chamber, and then accomplish the automatic hem to the cut-parts edge.

Drawings

FIG. 1 is a schematic structural view of an armhole sewing device according to the present application.

Fig. 2 is a schematic structural diagram of the left automatic folding mechanism in fig. 1.

Fig. 3 is a schematic structural view of an upper section unit of the automatic folding mechanism in fig. 2.

Fig. 4 and 5 are schematic structural diagrams of the fourth baffle plate and a mounting assembly on the fourth baffle plate in fig. 3 at different viewing angles.

Fig. 6 is a schematic structural view of the material pressing and pushing sheet driving mechanism in the present application.

Fig. 7 to 9 are schematic structural views of a lower section unit of the automatic folding mechanism in fig. 2 at different viewing angles.

Fig. 10 is a top view of fig. 7.

Fig. 11 is a bottom view of fig. 7.

Fig. 12a to 12f are views illustrating the folding process of the sleeve vent according to the present application.

(wherein, the first positioning flange portion 801, the second positioning flange portion 901, the third positioning flange portion 111, and the fourth positioning flange portion 121 are omitted in FIGS. 12b to 12 f.)

Description of the element reference numerals

1 fixed base plate 25 swager

101 guide hole 26 second driving cylinder

102 first guide groove 27 connecting block

103 second guide groove 28 mounting seat

2 Material discharging plate 29 overturning support

201 first air suction hole 30 driving rotating shaft

202 second air suction hole 31 turnover motor

3 discharge chamber 32 pressure flitch

301 third driving cylinder of sleeve fork end forming part 33

Fourth driving cylinder of 4 material folding plectrum 34

5 moving the clamp 35 first guide block

6 fixing clamp 36 first slide rail

7 air suction seat 37 mounting rack

8 first baffle 38 fifth drive cylinder

801 first positioning edge part 39 connecting seat

802 second slide rail of guide edge part 40

9 second stop 41 second guide block

901 second positioning flange part 42 sixth driving cylinder

11 third baffle 43 seventh drive cylinder

111 eighth driving cylinder of third positioning flange part 44

12 fourth baffle 45 splint connecting piece

121 fourth positioning flange part 46 drive tension spring

122 position-limiting flange 47 front fixing plate

13 guide support plate 48 rear fixing plate

14 guide pin 49 third slide rail

15 limiting mounting block 50 and third guide block

16 stop screw 51 fourth slide rail

17 limiting plate 52 fourth guide block

18 pressing poking piece 53 bedplate

181 fifth positioning flange part 54 beam

19 fixed support 55 sleeve vent

20 support the tip of shaft 551

21 drive gear 56 small cut piece

22 drive rack 57 large panel

23 first drive cylinder 59 liner

24 material pressing cylinder

Detailed Description

The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.

It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.

In the following embodiments, the directions are defined as follows, the height direction of the cuff sewing device is defined as the up-down direction, the width direction of the cuff sewing device is defined as the left-right direction, and the length direction of the cuff sewing device is defined as the front-back direction; in addition, in the cuff sewing process, the direction of the cuff sewing device facing the operator is the front direction, the direction of the cuff sewing device facing away from the operator is the rear defense line, one end of the cuff sewing device on the left hand side of the operator is the left end, and one end of the cuff sewing device on the right hand side of the operator is the right end.

The application relates to a cuff vent sewing device, as shown in figure 1, the cuff vent sewing device has a frame, a platen 53 fixed on the frame and a cut-parts folding station, an automatic folding mechanism is installed on the cut-parts folding station, and the automatic folding mechanism is used for automatically folding a small cut-parts 56 and a big cut-parts 57 into cuff vents 55 to be sewn. As shown in fig. 1, the automatic folding mechanism has an upper section unit mounted to a cross member 54 extending left and right in the frame, and a lower section unit mounted to the platen 53. In addition, because the sleeve vent 55 on the left sleeve and the sleeve vent 55 on the right sleeve on the clothes are of a left-right mirror image structure, the cut-parts folding stations in the sleeve vent sewing equipment are arranged in a left-right mode, each cut-part folding station is provided with an automatic folding mechanism, and the automatic folding mechanism arranged at the left cut-part folding station and the automatic folding mechanism arranged at the right cut-part folding station are in a left-right mirror image setting relationship by taking a vertical plane extending from front to back as a center. The preferred embodiment of the automatic folding mechanism will be described below by taking the automatic folding mechanism mounted at the left side panel folding station as an example.

As shown in fig. 2 to 11, the automatic folding mechanism includes a fixed base plate 1 fixed to a platen 53 of the cuff vent sewing machine, a discharge plate 2 fixedly installed on the upper surface of the fixed base plate 1 and having a discharge station at the upper end, a baffle plate assembly located on the outer peripheral side of the discharge station, a discharge chamber 3 formed by the discharge plate 2 and the baffle plate assembly, a material clamping assembly located in the discharge chamber 3 and capable of turning, and a material folding and poking piece 4 provided on the upper end surface of the fixed base plate 1. The outer periphery of the discharging cavity 3 is matched with the folded edge shape of the sleeve fork 55, and the front end of the sleeve fork 55 is provided with a tip 551, so that the front end of the discharging cavity 3 is provided with a sleeve fork end forming part 301 matched with the tip 551 of the sleeve fork 55, and the outer periphery of the discharging cavity 3 is composed of two straight edges which are oppositely arranged left and right and extend front and back, and two bevel edges which form the sleeve fork end forming part 301. The discharging plate 2 is provided with a plurality of first air suction holes 201 which are distributed at intervals along the circumferential direction of the discharging cavity 3 and used for forming negative pressure at the periphery of the discharging cavity 3, so that the small cut pieces 56 can be automatically folded into the peripheral shape of the discharging cavity 3. The material clamping assembly can turn around a turning central axis, and the turning central axis is also a median line of the discharging cavity 3 in the left-right direction; press from both sides the material subassembly including the removal splint 5 and the solid fixed splint 6 of range upon range of setting from top to bottom and form at the double-layered material chamber of removing splint 5 and solid fixed splint 6, remove splint 5 and can reciprocate to the direction that is close to or keeps away from solid fixed splint 6. The material folding plectrum 4 is positioned at the upper side of the baffle assembly and can move left and right in the direction close to or far away from the sleeve vent end forming part 301.

The present invention also provides an automatic folding method for automatically folding the small cut piece 56 and the large cut piece 57 into the sleeve vent 55 by using the automatic folding mechanism, in an initial state before the folding is started, as shown in fig. 7 and 10, the material clamping assembly is positioned in the right half part of the material discharging cavity 3, the movable clamping plate 5 is tilted upwards and is not attached to the fixed clamping plate 6, the material folding plectrum 4 is positioned at the left side of the sleeve vent end forming part 301, and the material discharging cavity 3 is formed by the material discharging plate 2 and the baffle plate assembly. The automatic folding method sequentially comprises the following steps:

step a, the small cut pieces 56 are placed in the feeding cavity 3, and the small cut pieces 56 are placed in the clamping cavity, as shown in fig. 12a, so that a part of the small cut pieces 56 are located between the movable clamping plate 5 and the fixed clamping plate 6, a part of the small cut pieces are located on the feeding plate 2, and a part of the small cut pieces 56 are located on the baffle plate assembly (i.e. located outside the feeding cavity 3).

Step B, air suction is performed, so that negative pressure is formed at the first air suction holes 201, so that a part of the outer edge of the small cut piece 56 positioned outside the material discharge cavity 3 is automatically folded inwards to form a folded edge part, as shown in fig. 12B, and a part of the edge of the small cut piece 56 at the sleeve vent end forming part 301 is not folded into the material discharge cavity 3, exceeds the left oblique edge of the sleeve vent end forming part 301, is positioned outside the material discharge cavity 3, and is also positioned between the material folding plectrum 4 and the material discharge cavity 3.

Step C, the material folding plectrum 4 moves towards the direction close to the sleeve vent end forming part 301 to the right, a part of the edge outside the material discharging cavity 3 in the step B is folded into the material discharging cavity 3 to the right, and then the appearance of the tip part 551 of the sleeve vent 55 is folded, as shown in fig. 12C; under the action of the first air suction holes 201, the small cut pieces 56 are kept in the folded state in the containing cavity 3; the left side of the folded small cut piece 56 is provided with a first straight edge extending forwards and backwards and a first oblique edge extending obliquely towards the right back, the right side of the folded small cut piece 56 is provided with a second straight edge extending forwards and backwards and a second oblique edge extending obliquely towards the left back, and the first oblique edge and the second oblique edge are intersected to form a tip 551 of the sleeve fork 55.

And D, moving the material folding plectrum 4 leftwards in the direction away from the sleeve vent end forming part 301 and resetting.

Step E, the movable clamping plate 5 moves downwards towards the direction close to the fixed clamping plate 6, and the right half part of the folded small cut piece 56 is clamped between the movable clamping plate 5 and the fixed clamping plate 6; taking the front view as a viewing angle, the clamping assembly drives the clamped right half small cut piece 56 to turn counterclockwise by a preset angle in a direction away from the material discharge cavity 3 until an acute included angle is formed between the clamping assembly and the material discharge plate 2, as shown in fig. 12 d; at this time, the fixing splint 6, the right half small cut pieces 56, the moving splint 5, the left half small cut pieces 56, and the discharge plate 2 are sequentially arranged from top to bottom in the up-down direction.

And F, placing the large cut piece 57, wherein the large cut piece 57 is provided with a sleeve fork forming part which is sewed with the small cut piece 56, so that the sleeve fork forming part is positioned between the left half small cut piece 56 which is not clamped in the clamping assembly and the movable clamping plate 5, and the sleeve fork forming part on the large cut piece 57 is kept in the emptying cavity 3 under the action of the first air suction holes 201 as shown in figure 12 e.

And G, the clamping component drives the clamped right half small cut piece 56 to continuously turn over anticlockwise until the fixing clamping plate 6 is attached to the large cut piece 57, at this time, as shown in fig. 12f, the right half part and the left half part of the small cut piece 56 are overlapped, the first straight edge and the second straight edge of the small cut piece 56 are overlapped, and the sleeve vent forming part on the large cut piece 57 is clamped between the folded right half part and the folded left half part of the small cut piece 56, so that the folding of the sleeve vent 55 is completed.

Therefore, the small cut pieces 56 and the large cut pieces 57 can be automatically folded into the sleeve forks 55, so that an operator only needs to place the small cut pieces 56 and the large cut pieces 57, the operation is time-saving and labor-saving, the folding efficiency and the folding quality of the cut pieces are greatly improved, the sewing efficiency and the sewing quality of the sleeve forks 55 are ensured, and the requirements of modern production are met.

As shown in fig. 7 and 10, a row of second air suction holes 202 located at the turning central axis of the material clamping assembly is further formed on the material discharging plate 2, so that the row of second air suction holes 202 is also located at the middle position of the material discharging cavity 3 in the left-right direction, and the second air suction holes 202 are used for improving the holding force for the folded armholes 55, thereby ensuring the folding quality of the armholes 55. Preferably, the automatic folding mechanism further comprises an air suction assembly, as shown in fig. 7 and 8, the air suction assembly comprises an air suction machine (not shown in the figure) fixed on a middle frame of the sleeve fork sewing device and an air suction base 7 fixed on the lower end surface of the fixed bottom plate 1, the air suction machine is located on the lower side of a middle bedplate 53 of the sleeve fork sewing device, the air suction base 7 is located under the material discharge plate 2 and is internally provided with an air suction cavity with an opening facing the material discharge plate 2, an upper end opening of the air suction cavity is covered by the material discharge plate 2, so that a closed cavity is formed between the air suction base 7 and the material discharge plate 2, the air suction machine is communicated with the air suction cavity through an air suction pipe, and the air suction cavity is communicated with the first air suction hole 201 and the second air. Under the action of the aspirator, negative pressure can be formed at the first air suction holes 201 and the second air suction holes 202 to suck the cut pieces. In addition, the apertures of the first air suction holes 201 can be different, and the apertures of the first air suction holes 201 and the second air suction holes 202 can also be different, so that the suction force at different positions can be adjusted, and the flatness of the folded edges of the cut pieces can be ensured.

As shown in fig. 7 to 11, the baffle plate assembly is composed of four baffle plates, namely a first baffle plate 8 positioned at the left side of the discharging chamber 3, a second baffle plate 9 positioned at the right side of the discharging chamber 3, a third baffle plate 11 positioned at the left rear side of the discharging chamber 3 and a fourth baffle plate 12 positioned at the right rear side of the discharging chamber 3, the first baffle plate 8 is provided with a first positioning baffle edge portion 801 for abutting against the first straight edge of the sleeve fork 55 to form the straight edge at the left side of the discharging chamber 3, the second baffle plate 9 is provided with a second positioning baffle edge portion 901 for abutting against the second straight edge of the sleeve fork 55 to form the straight edge at the right side of the discharging chamber 3, the third baffle plate 11 is provided with a third positioning baffle edge portion 111 for abutting against the first oblique edge of the middle tip portion 551 of the sleeve fork 55 to form the oblique edge at the left side of the discharging chamber 3, the fourth baffle plate 12 is provided with a second positioning baffle edge 121 for abutting against the middle tip portion 551 of the sleeve fork 55 to form the oblique edge at the right side of the discharging chamber 3, and, the fourth positioning flange portion 121 intersects with the central turning axis of the clamping assembly. Particularly, the second baffle 9 can move about to the direction of being close to or keeping away from the upset central axis of pressing from both sides the material subassembly, and then after pressing from both sides the material subassembly and driving little cut-parts 56 anticlockwise upset, second baffle 9 moves left and the right edge looks butt of little cut-parts 56 after the upset. The rear edge of the first flap 8 forms a guide stopper portion 802 located on the extension line of the first oblique side on the left side of the sleeve fork tip 551, the rear edge of the fourth flap 12 forms a limit stopper portion 122 located on the extension line of the second oblique side on the right side of the sleeve fork tip 551, the third flap 11 can move in the direction approaching or separating from the sleeve fork end forming portion 301 along the extension direction of the guide stopper portion 802 of the first flap 8, and the fourth flap 12 is mounted on the cross member 54 in the frame and can move up and down. When the automatic folding mechanism is not operated, as shown in fig. 7 and 10, the first baffle 8 and the second baffle 9 are respectively positioned at the left row of the first air suction holes 201 and the right row of the first air suction holes 201, the third baffle 11 is positioned at the left side of the left row of the first air suction holes 201, and the fourth baffle 12 is positioned above the material discharging plate 2; when the automatic folding mechanism starts to work, the fourth baffle plate 12 moves downwards to abut against the discharging plate 2, and the third baffle plate 11 moves to the right and back along the guiding edge blocking part 802 until abutting against the limiting edge blocking part 122 on the fourth baffle plate 12, so that the discharging cavity 3 is formed.

As shown in fig. 4 and 6, a rotatable swaging shift plate 18 is mounted on the upper end surface of the fourth baffle plate 12; when the fourth baffle 12 is located at the periphery of the material placing cavity 3, the material pressing shifting piece 18 is located at the lower side of the material folding shifting piece 4 and can abut against the third positioning edge blocking part 111, so that the left back corner of the small cut piece 56 is pressed, the small cut piece 56 is straightened, and the material folding shifting piece 4 is facilitated to fold only one part of the small cut piece 56 outside the material placing cavity 3 inwards into the material placing cavity 3. Meanwhile, the material pressing shifting piece 18 is provided with a fifth positioning edge blocking part 181, when the material pressing shifting piece 18 abuts against the third positioning edge blocking part 111, the fifth positioning edge blocking part 181 is parallel to the third positioning edge blocking part 111 and extends along the extending direction of the first bevel edge on the left side of the middle tip part 551 of the sleeve fork 55, and then the appearance of the middle tip part 551 of the sleeve fork 55 can be accurately folded. The preferable driving structure of the material pressing shifting piece 18 is as follows: the upper section unit of the automatic folding mechanism further comprises a fixed support 19 fixed on the upper end face of the fourth baffle plate 12, a support shaft 20 fixed on the fixed support 19 and extending up and down, a drive gear 21 rotatably installed on the periphery of the support shaft 20 through a bearing, a drive rack 22 with the front end meshed with the drive gear 21, and a first drive cylinder 23, wherein a piston rod of the first drive cylinder 23 can stretch back and forth along the length direction of the drive rack 22 and is fixed with the rear end of the drive rack 22, and the material pressing plectrum 18 is fixed with the drive gear 21. When a piston rod of the first driving cylinder 23 extends forwards, the first driving cylinder 23 drives the driving rack 22 to move forwards at the same time, so as to drive the driving gear 21 and the material pressing shifting piece 18 to rotate clockwise by an angle until the material pressing shifting piece 18 abuts against the third positioning flange part 111; when the piston rod of the first driving cylinder 23 retracts backwards and returns, the piston rod is returned together through the driving rack 22, the driving gear 21 and the material pressing shifting piece 18. As shown in fig. 4 and 5, a material pressing cylinder 24 is installed on the fourth baffle 12, a piston rod of the material pressing cylinder 24 can extend up and down, and a material pressing rod 25 is fixed at the lower end of the material pressing cylinder 24 and used for pressing the small cut-parts 56.

As shown in fig. 7 to 9, the lower section unit of the automatic folding mechanism further includes a second driving cylinder 26 fixed below the fixed base plate 1 (preferably fixed on the lower end surface of the air suction seat 7), a connecting block 27 fixed with the front end of the piston rod of the second driving cylinder 26, a mounting support 28 fixed with the connecting block 27, and a turning support 29 rotatably mounted on the mounting support 28, the turning support 29, and the fixed base plate 1 are sequentially arranged from front to back along the front-back direction, the piston rod of the second driving cylinder 26 can extend back and forth in the direction close to or far away from the material discharge chamber 3, the first baffle plate 8 and the second baffle plate 9 are both mounted on the mounting support 28, and the material clamping assembly is mounted on the turning support 29. After the step G is executed, the piston rod of the second driving cylinder 26 extends forward, and then the mounting support 28 and the turning support 29 are driven by the connecting block 27 to move forward simultaneously, so as to drive the first baffle plate 8, the second baffle plate 9 and the material clamping component to move forward simultaneously to preset positions until the first baffle plate 8, the second baffle plate 9 and the material clamping component are separated from the small cut piece 56 and the large cut piece 57, and only the small cut piece 56 and the large cut piece 57 are kept on the material placing plate 2, so that the material moving mechanism in the sleeve fork sewing device can move the folded sleeve fork 55 to the sewing head.

In order to ensure that the folded small cut pieces 56 and the folded large cut pieces 57 do not shift in the process of drawing the first baffle plate 8, the second baffle plate 9 and the material clamping assembly forwards, as shown in fig. 3, the upper section unit of the automatic folding mechanism further comprises a material pressing plate 32 capable of moving up and down, wherein the material pressing plate 32 is positioned at the right upper side of the material placing cavity 3 and at the front side of the fourth baffle plate 12; after the above step G is performed, the pressing plate 32 moves downward to press the small cut pieces 56 and the large cut pieces 57 against the material feeding plate 2, and then the piston rod of the second driving cylinder 26 is extended forward. In this embodiment, the structure for driving the material pressing plate 32 to move up and down and the fourth baffle 12 to move up and down is as follows: as shown in fig. 3, a front fixing plate 47 and a rear fixing plate 48 are respectively fixed on the front end surface and the rear end surface of a cross beam 54 of the rack, a third driving cylinder 33 is fixedly installed on the rear fixing plate 48, and a fourth baffle 12 is fixed at the lower end of a piston rod of the third driving cylinder 33; the front fixing plate 47 is fixedly provided with a fourth driving cylinder 34, the pressure plate 32 is fixed at the lower end of a piston rod of the fourth driving cylinder 34, and a piston rod of the third driving cylinder 33 and a piston rod of the fourth driving cylinder 34 can extend and retract along the vertical direction; when the piston rod of the third driving cylinder 33 extends downwards, the fourth baffle plate 12 can be driven to move downwards; when the piston rod of the fourth driving cylinder 34 is extended downward, the pressure plate 32 may be driven to move downward. In order to ensure the stability of the fourth baffle 12 and the pressure plate 32 moving up or down, the device further includes a third slide rail 49 fixed to the fourth baffle 12 and extending up and down, a third guide block 50 fixed to the rear fixing plate 48 and provided with a third slide groove, a fourth slide rail 51 fixed to the pressure plate 32 and extending up and down, and a fourth guide block 52 fixed to the front fixing plate 47 and provided with a fourth slide groove, wherein the third slide rail 49 is matched with the third slide groove, and the fourth slide rail 51 is matched with the fourth slide groove.

As shown in fig. 5 and 7, a guide support 13 is fixed on the upper end surface of the fourth baffle plate 12, guide pins 14 which extend up and down and are located on the left and right sides of the fourth baffle plate 12 are fixed on both left and right ends of the guide support 13, a guide hole 101 which is arranged opposite to the guide pins 14 up and down is formed at the rear edge of the fixed bottom plate 1, and a guide shaft sleeve which is matched with the guide pins 14 is fixedly arranged in the guide hole 101. After the third driving cylinder 33 drives the fourth baffle 12 to move downwards, the accuracy of the position of the fourth baffle 12 moving downwards each time can be ensured through the mutual matching of the guide pin 14 and the guide shaft sleeve in the guide hole 101, and the fourth baffle 12 can be further ensured to be capable of accurately forming the discharging cavity 3.

As shown in fig. 7, the lower section unit of the automatic folding mechanism further includes a driving rotating shaft 30 rotatably installed in the mounting support 28, and a flipping motor 31 installed on the mounting support 28, the driving rotating shaft 30 axially extends in the front-rear direction, the flipping motor 31 is connected to the front end of the driving rotating shaft 30 through a synchronous belt transmission mechanism, a gear transmission mechanism, or other transmission mechanisms, and the rear end of the driving rotating shaft 30 is fixed in the flipping support 29; when the turning motor 31 is operated, the driving shaft 30 is driven to rotate, so that the turning support 29 and the clamping assembly are driven to rotate together through an angle. In addition, a trigger screw is fixed on the overturning support 29, and a proximity sensor capable of sensing the trigger screw is installed on the installation support 28, so that the rotating angle of the overturning support 29 and the material clamping assembly can be accurately controlled.

As shown in fig. 7 to 11, the lower section unit of the automatic folding mechanism further includes a first guide block 35 fixedly connected to the lower end surface of the fixed base plate 1, a first slide rail 36 fixedly connected to the lower end surface of the mounting support 28, a mounting bracket 37 fixedly connected to the first slide rail 36 and extending left and right, a fifth driving cylinder 38 mounted on the rear end surface of the mounting bracket 37, a connecting seat 39 fixedly connected to the front end of the second baffle plate 9, a second slide rail 40 fixedly connected to the mounting bracket 37, and a second guide block 41 fixedly connected to the lower end surface of the second baffle plate 9; a first sliding groove matched with the first sliding rail 36 is formed in the first guide block 35, the first sliding rail 36 and the first sliding groove both extend forwards and backwards along the telescopic direction of the piston rod of the second driving cylinder 26, and the front end of the first baffle plate 8 is fixedly connected with the mounting frame 37; the end of the piston rod of the fifth driving cylinder 38 is fixedly connected with the connecting seat 39, a second sliding groove matched with the second sliding rail 40 is formed in the second guide block 41, and the second sliding rail 40 and the second sliding groove both extend left and right along the extension direction of the piston rod of the fifth driving cylinder 38; the extension and contraction direction of the piston rod of the second driving cylinder 26 is perpendicular to the extension and contraction direction of the piston rod of the fifth driving cylinder 38. Therefore, when the piston rod of the second driving cylinder 26 extends forwards or retracts backwards, the mounting support 28, the first slide rail 36, the mounting rack 37, the first baffle plate 8, the second baffle plate 9, the fifth driving cylinder 38, the connecting seat 39, the second slide rail 40 and the second guide block 41 can be driven to synchronously move forwards or backwards; when the piston rod of the fifth driving cylinder 38 extends leftward or retracts rightward, the second shutter 9 may be driven to move leftward or rightward.

As shown in fig. 7 and 8, a limiting mounting block 15 located on the right side of the second baffle 9 is fixed on the mounting frame 37, so that the limiting mounting block 15 and the first baffle 8 are relatively static, a limiting screw 16 extending left and right along the moving direction of the second baffle 9 is connected in the limiting mounting block 15 in a threaded manner, and a limiting plate 17 is fixed on the right side of the second baffle 9, which is opposite to the discharging cavity 3; when the fifth driving cylinder 38 resets, the second baffle 9 is driven to also move rightwards for resetting, and the reset position of the second baffle 9 can be limited by the abutting of the limiting plate 17 and the left end of the limiting screw 16; the protruding amount of the limit screw 16 from the limit mounting block 15 is adjustable, so that the reset position of the second shutter 9 is adjustable in the left-right direction.

As shown in fig. 7 to 9, the material folding plectrum 4 and the third baffle 11 are movably mounted on the upper end surface of the fixed bottom plate 1, and the specific driving structure is as follows: a sixth driving cylinder 42 and a seventh driving cylinder 43 are fixedly mounted on the lower end face of the fixed base plate 1, a first guide groove 102 and a second guide groove 103 are formed in the fixed base plate 1, a first sliding part penetrates through the first guide groove 102, a second sliding part penetrates through the second guide groove 103, the upper end and the lower end of the first sliding part are respectively fixed with the material folding shifting piece 4 and a piston rod of the sixth driving cylinder 42, the upper end and the lower end of the second sliding part are respectively fixed with the third baffle 11 and a piston rod of the seventh driving cylinder 43, the piston rod of the sixth driving cylinder 42 can stretch along the moving direction of the material folding shifting piece 4, and the piston rod of the seventh driving cylinder 43 can stretch along the moving direction of the third baffle 11.

As shown in fig. 8, the material clamping assembly further includes an eighth driving cylinder 44 mounted on the overturning support 29, a clamping plate connecting member 45 fixed to the movable clamping plate 5, and a driving tension spring 46 extending forward and backward, a piston rod of the eighth driving cylinder 44 can extend and retract up and down and act on the clamping plate connecting member 45, and front and rear ends of the driving tension spring 46 are respectively connected to upper ends of the overturning support 29 and the clamping plate connecting member 45. When the piston rod of the eighth driving cylinder 44 does not extend downwards and does not act on the clamping plate connecting member 45, the upper end of the clamping plate connecting member 45 is pulled forwards under the action of the tension of the driving tension spring 46, so that the lower end of the clamping plate connecting member 45 is tilted upwards, the rear end of the movable clamping plate 5 is tilted upwards, and the small cut piece 56 can be placed between the movable clamping plate 5 and the fixed clamping plate 6; when the piston rod of the eighth driving cylinder 44 extends downward, the lower end of the driving splint connecting member 45 moves downward, so that the rear end of the driving movable splint 5 moves downward and presses against the fixed splint 6, and the small cut-pieces 56 are clamped between the movable splint 5 and the fixed splint 6. Furthermore, as shown in fig. 3, a lining plate 59 is fixed on the left side of the pressure plate 32, and the lower end surface of the lining plate 59 and the upper end surface of the fixing splint 6 are friction surfaces contacting with the small cut pieces 56, so as to increase the friction force between the pressure plate 32 and the cloth when pressing the cloth and the friction force between the clamping assembly and the cloth when clamping the cloth.

In the initial state of the automatic folding mechanism with the above structure, the fourth baffle 12 and the material pressing plate 32 in the upper section unit do not move downwards and are both located above the fixed bottom plate 1, the first baffle 8 and the second baffle 9 in the lower section unit are respectively located on the left end side of the left row of first air suction holes 201 and the right end side of the right row of first air suction holes 201 on the material discharging plate 2, the third baffle 11 in the lower section unit is located on the left front side of the sleeve fork end forming part 301, the material folding shifting sheet 4 in the lower section unit is located on the left side of the sleeve fork end forming part 301, the material clamping assembly is located on the right end side of the second air suction holes 202, and the rear end of the movable clamping plate 5 in the material clamping assembly tilts upwards. The working principle of the folding sleeve fork 55 of the automatic folding mechanism is as follows: 1. the third driving cylinder 33 operates to drive the fourth baffle plate 12 to move downwards, the seventh driving cylinder 43 operates to drive the third baffle plate 11 to move to the right and back along the guiding flange part 802 on the first baffle plate 8 until the third baffle plate is abutted against the limiting flange part 122 on the fourth baffle plate 12, so as to form the discharge cavity 3, and the first positioning flange part 801, the third positioning flange part 111, the fourth positioning flange part 121 and the second positioning flange part 901 are arranged on the outer periphery of the discharge cavity 3, as shown in fig. 12 a. 2. The small cut piece 56 is put in and a part of the small cut piece 56 is positioned in the clamping cavity of the clamping assembly, the material pressing cylinder 24 is actuated to drive the material pressing rod 25 to move downwards, the material pressing rod 25 is adjacent to the third positioning flange part 111, and thus a part of the small cut piece 56 adjacent to the third positioning flange part 111 is pressed on the material placing plate 2. 3. The suction machine is operated to form negative pressure at the first suction holes 201 and the second suction holes 202, so that a part of the small cut piece 56 outside the feeding cavity 3 is automatically folded inwards, as shown in fig. 12b, since the pressing rod 25 presses and adheres to a part of the small cut piece 56 adjacent to the third positioning flange part 111, a part of the outer edge of the small cut piece 56 at the third positioning flange part 111 is not folded and still outside the feeding cavity 3. 4. The material pressing cylinder 24 resets and the material pressing rod 25 is driven to move upwards and reset. 5. The first driving cylinder 23 acts to drive the driving rack 22 to move forward, so that the driving gear 21 and the pressing and dialing piece 18 rotate by an angle until the pressing and dialing piece 18 abuts against and is attached to the third positioning edge blocking portion 111 on the third baffle 11, the left rear end of the small cut piece 56 is pressed and attached between the pressing and dialing piece 18 and the third baffle 11, and the cloth at the third positioning edge blocking portion 111 is straightened. 6. The sixth driving cylinder 42 acts to drive the material folding poking piece 4 to extend rightward, and a part of the edge of the small cutting piece 56, which is positioned outside the material placing cavity 3, is folded rightward into the material placing cavity 3, so that the shape of the middle tip part 551 of the sleeve fork 55 is folded. 6. The first driving cylinder 23 resets and drives the material pressing shifting piece 18 to reset; meanwhile, the eighth driving cylinder 44 acts to drive the movable pressing plate to press down, so as to clamp the small cut pieces 56; the third driving cylinder 33 resets and drives the fourth baffle plate 12 to move upwards and reset. 7. The turnover motor 31 rotates for a preset number of turns, so that the right half part of the small cut-parts 56 driven by the clamping component rotates for a preset angle until an acute included angle is formed between the clamping component and the discharging plate 2. 8. The fifth driving cylinder 38 acts to drive the second baffle 9 to move leftward until the second baffle 9 abuts against the right edge of the small cut piece 56, and at this time, the left edge of the second baffle 9 is also located at the right end of the second air suction hole 202. 9. The large panel 57 is placed so that the sleeve vent forming portion of the large panel 57 is located between the clamping member and the left half portion of the small panel 56, and a part of the large panel 57 is covered above the clamping member. 10. The turning motor 31 continues to rotate for a preset number of turns, so that the material clamping component drives the right half part of the small cut piece 56 to continue to rotate for an angle until the material clamping component is pressed on the large cut piece 57. 11. The fifth driving air cylinder 38 resets and drives the second baffle 9 to move rightwards and reset. 12. The fourth driving cylinder 34 acts to drive the material pressing plate 32 to move downwards, and the material pressing plate 32 is pressed on the large cutting piece 57; meanwhile, the sixth driving air cylinder 42 resets and drives the material folding poking sheet 4 to move leftwards and reset. 13. The second driving cylinder 26 acts to drive the first baffle 8, the second baffle 9 and the clamping assembly to move forwards and separate from the small cut piece 56 and the large cut piece 57, and the small cut piece 56 and the large cut piece 57 are kept on the feeding plate 2 under the action of the pressing plate 32 and the suction force. 14. The fourth driving cylinder 34 resets and drives the material pressing plate 32 to move upwards for resetting, so that the automatic folding of the sleeve vent 55 is completed. Then, the folded sleeve vent 55 is transferred to the sewing head for sewing by a material transferring mechanism of the sleeve vent sewing device. Therefore, after the small cut pieces 56 are put in, the air suction machine operates and starts to fold until the folding is finished, namely, the air suction machine is in the air suction state all the time from the step 3 to the step 14, and the cloth is adsorbed and kept on the discharging plate 2 all the time.

In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.

The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims

1. An automatic folding mechanism which is characterized in that: the material pressing device comprises a fixed bottom plate (1), a material placing plate (2) which is arranged on the upper surface of the fixed bottom plate (1) and is provided with a material placing station, a baffle plate assembly which is positioned on the outer peripheral side of the material placing station, a material placing cavity (3) which is formed by the material placing plate (2) and the baffle plate assembly, a movable material folding poking piece (4) and a rotatable material pressing poking piece (18), wherein the baffle plate assembly is provided with a positioning edge retaining part which is positioned on the outer peripheral side of the material placing cavity (3), the positioning edge retaining part is internally provided with a third positioning edge retaining part (111) which is used for being abutted against a first bevel edge of a middle sharp end part (551) of a sleeve fork (55) and forming a left bevel edge of the material placing cavity (3), the material pressing poking piece (18) can be abutted against the third positioning edge retaining part (111), the baffle plate assembly is internally provided with a fourth baffle plate (12) which can move up and, a guide support plate (13) is further fixed on the upper end face of the fourth baffle plate (12), guide pins (14) which extend up and down and are located on the left side and the right side of the fourth baffle plate (12) are fixed at the left end and the right end of the guide support plate (13), a guide hole (101) which is opposite to the guide pins (14) up and down is formed in the rear edge of the fixed bottom plate (1), and a guide shaft sleeve which is matched with the guide pins (14) is fixedly arranged in the guide hole (101); the material folding poking piece (4) is positioned on the upper side of the baffle plate assembly and can move towards the direction close to or far away from the material discharge cavity (3), and the material folding poking piece (4) is movably arranged on the upper end face of the fixed bottom plate (1); a material pressing cylinder (24) is further mounted on the fourth baffle (12), a piston rod of the material pressing cylinder (24) can stretch up and down, a material pressing rod (25) is fixed at the lower end of the piston rod, when the fourth baffle (12) moves down and the material discharging cavity (3) is formed, and then a small cut piece (56) is placed, the material pressing cylinder (24) acts to drive the material pressing rod (25) to move down, the material pressing rod (25) is close to the third positioning edge blocking part (111), and a part of the small cut piece (56) close to the third positioning edge blocking part (111) is pressed and attached to the material discharging plate (2); after the material pressing shifting piece (18) rotates and abuts against the third positioning edge blocking part (111), the cut piece is pressed between the baffle plate component and the material pressing shifting piece (18), and then a part of the outer edge of the cut piece, which is positioned outside the material placing cavity (3), is folded into the material placing cavity (3) through the material folding shifting piece (4).

2. The automatic folding mechanism of claim 1, characterized in that: still include fixing support (19), be fixed in back shaft (20) of fixing support (19), rotationally install drive gear (21) in back shaft (20) periphery, one end and drive rack (22) that drive gear (21) engaged with mutually and first drive actuating cylinder (23), the piston rod of first drive actuating cylinder (23) can be followed drive rack (22) length direction and stretch out and draw back and fixed mutually with the other end that drives rack (22), press material plectrum (18) and drive gear (21) fixed mutually.

3. The automatic folding mechanism of claim 1, characterized in that: the sleeve fork sewing machine is characterized by further comprising a fixed base plate (1) fixed on a platen (53) in sleeve fork sewing equipment and a sixth driving cylinder (42) installed on the fixed base plate (1), the material discharging plate (2) is installed on the fixed base plate (1), a first guide groove (102) is formed in the fixed base plate (1), a first sliding piece penetrates through the first guide groove (102), two ends of the first sliding piece are fixed with a piston rod of the sixth driving cylinder (42) and a material folding shifting piece (4) respectively, and a piston rod of the sixth driving cylinder (42) can stretch along the moving direction of the material folding shifting piece (4).

4. The automatic folding mechanism of claim 1, characterized in that: the material discharging plate (2) is provided with a plurality of first air suction holes (201).

5. The automatic folding mechanism of claim 4, characterized in that: still include the subassembly of breathing in, the subassembly of breathing in includes the aspirator and is located the air suction seat (7) under blowing board (2), it has the opening towards the chamber of breathing in of blowing board (2) to open in air suction seat (7), blowing board (2) cover the opening in chamber of breathing in, the aspirator is linked together through breathing pipe and the chamber of breathing in, the chamber of breathing in is linked together with first air suction hole (201).

6. An automatic folding method is characterized in that: use of an automatic folding mechanism according to any of claims 1 to 5, the automatic folding method comprising the following steps in sequence:

s1, placing the cut pieces in the feeding cavity (3), wherein a part of the outer edges of the cut pieces are positioned outside the feeding cavity (3);

s2, the pressing shifting sheet (18) rotates until the pressing shifting sheet is abutted against the positioning flange part in the baffle plate assembly, and the cut pieces are pressed between the baffle plate assembly and the pressing shifting sheet (18);

s3, moving the material folding poking sheet (4) towards the direction close to the material placing cavity (3) until a part of the outer edge of the cut piece outside the material placing cavity (3) is folded into the material placing cavity (3);

s4, the material pressing shifting piece (18) rotates reversely and resets, and the material folding shifting piece (4) moves and resets in the direction far away from the material discharging cavity (3).

7. The utility model provides an equipment is made up to sleeve vent, has cut-parts folding station, its characterized in that: the cut piece folding station is provided with an automatic folding mechanism according to any one of claims 1 to 5.