CN210596535U

CN210596535U - A turn-ups mechanism for sewing up line pressing machine

Info

Publication number: CN210596535U
Application number: CN201921031958.1U
Authority: CN
Inventors: 王腊鹏
Original assignee: Zhejiang Lingzhi Intelligent Technology Co ltd
Current assignee: Zhejiang Lingzhi Intelligent Technology Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-05-22
Anticipated expiration: 2029-07-04

Abstract

The utility model relates to a flanging mechanism for sewing thread-pressing machine, which comprises a workbench, a guide plate and a material-turning plate for turning the upper layer of cloth of the sewed double-layer cloth to one side of the sewing part, wherein the material-turning plate is positioned above the workbench; the guide plate is arranged on one side of the material turning plate, at least part of the guide plate is positioned above the workbench, a cavity for accommodating a sewing part is formed between the guide plate and the workbench, and a first gap for the upper-layer cloth to penetrate through is formed between the guide plate and the material turning plate; the lower part of the material turning plate is provided with a contraction section which gradually contracts from top to bottom, the contraction section extends along the advancing direction of the cloth, and a second gap for accommodating the lower layer of cloth is formed between the lower end of the contraction section and the workbench. The lower cloth layer with uneven thickness in the second gap can move smoothly along the advancing direction of the cloth layer, the lower cloth layer cannot be clamped due to large friction force between the material turning plate and the lower cloth layer, so that the upper cloth layer can be turned over conveniently, and the universality is good.

Description

A turn-ups mechanism for sewing up line pressing machine

Technical Field

The utility model relates to a weaving tailoring technical field, concretely relates to turn-ups mechanism for sewing up line pressing machine.

Background

The cloth edge is sewn by an overlock machine in the clothing manufacturing process, the overlock needs to pass through a plurality of steps, firstly, a first cloth is arranged below a second cloth is arranged above the first cloth, the front sides of the two layers of cloth are opposite, then, a thread is uniformly stitched on the back side according to the specified stitching, the stitching width is different according to the thickness and the tightness of the texture of the fabric and the position of the stitching, generally 0.8-1.2 cm, then, the two layers of cloth are unfolded until the two front sides face upwards, the second thread is stitched at the stitching position, namely, the thread is pressed, and finally, the stitched cloth is folded and turned over to be on the first cloth and to be under the second cloth.

The technical process needs sewing technicians to have high proficiency, the sewing quality directly influences the attractive and tidy degree of clothes, defective products and even waste products can be sewn by accident, furthermore, the yarn pressing can be carried out only by pulling and turning the cloth for multiple times during the cloth processing, multiple processes need different sewing technicians to complete the process, and the production efficiency is low.

In order to solve the above-mentioned turning-over problem, for example, a turning-over mechanism for an automatic sewing thread press is proposed in chinese patent application No. CN201810556707.9, which is a turn-over mechanism for an automatic sewing thread press, the turn-over mechanism realizes that the upper layer of cloth is turned over after the double layer of cloth enters the turn-over mechanism, and the sewing part is turned over.

Therefore, further improvements to existing turn-up mechanisms are needed.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a first technical problem that will solve is to the current situation of above-mentioned prior art, provides one kind can realize turning over the turn-ups mechanism that is used for sewing up the moulding press of a book purpose to the inhomogeneous double-deck cloth of thickness.

The utility model discloses the second technical problem that will solve is to above-mentioned prior art's current situation, provides a cloth after will rolling over a blows smooth turn-ups mechanism.

The utility model provides a technical scheme that above-mentioned first technical problem adopted does: a flanging mechanism for a sewing thread press comprises a workbench, a guide plate and a material turning plate, wherein the material turning plate is used for turning upper-layer cloth of sewn double-layer cloth to one side of a sewing position and is positioned above the workbench; the guide plate is arranged on one side of the material turning plate, at least part of the guide plate is positioned above the workbench, a cavity for accommodating a sewing position is formed between the guide plate and the workbench, and a first gap for the upper-layer cloth of the double-layer cloth to penetrate through is formed between the guide plate and the material turning plate; the method is characterized in that: the lower part of the material turning plate is provided with a contraction section which gradually contracts from top to bottom, the contraction section extends along the advancing direction of the cloth, and a second gap for accommodating the lower-layer cloth of the double-layer cloth is formed between the lower end of the contraction section and the workbench.

The side of the contraction section on one side of the guide plate can be an inclined plane which is inclined towards the direction of the guide plate from top to bottom gradually, and can be an arc-shaped surface which is bent towards the direction of the guide plate from top to bottom gradually. Like this, under the inhomogeneous condition of lower floor's cloth thickness, the interval between inclined plane and the workstation increases, and the area of contact of the lower extreme of material turning plate and lower floor's cloth is less, has reduced the frictional force between material turning plate lower extreme and the lower floor's cloth to the lower floor's cloth of the double-deck cloth of being convenient for moves along the direction of advance of cloth.

The utility model provides a technical scheme that above-mentioned second technical problem adopted does: the flanging mechanism also comprises an air blowing device used for blowing the folded cloth to be flat, and an air outlet nozzle of the air blowing device is positioned at the downstream position of the material turning plate along the advancing direction of the cloth.

In order to blow and flatten the upper layer cloth, the lower layer cloth and any position of the turned cloth of the double-layer cloth, so as to facilitate the advance of the cloth or the subsequent pressing of the cloth, the flanging mechanism further comprises at least one blowing piece capable of blowing the cloth to be flattened at any position, and the blowing piece is positioned above the workbench.

The structure form of the blowing piece is various, the form of a hose can be adopted, the movement of the blowing piece can be realized through a driving mechanism, and from the aspects of simple structure and cost, the blowing piece is preferably a telescopic movable hose which is arranged above the workbench through a support.

In order to realize the automatic advance of the lower-layer cloth, a first driving mechanism for driving the lower-layer cloth of the double-layer cloth to move along the cloth advancing direction is arranged on the workbench.

The first driving mechanism comprises a first motor, a first material guide wheel for pulling the lower layer of cloth to move forward and a limiting structure for limiting the lower layer of cloth to move upward, the first motor is arranged on the workbench, the power output end of the first motor is connected with the first material guide wheel, the first material guide wheel is located below the limiting structure, and a third gap for accommodating the lower layer of cloth is formed between the first material guide wheel and the limiting structure.

The limiting structure has multiple structural forms, can adopt the form of limiting plate, can also adopt the form of guide wheel, in order to realize that the cloth advances automatically, can guarantee that the cloth of different thickness advances automatically under the pulling of first guide wheel, preferably, limiting structure includes second guide wheel, connecting plate and the first elastic component that makes the second guide wheel have the trend of moving down all the time, the first end of connecting plate rotates to be set up on the material turning plate, the second guide wheel rotates through the pivot to be set up on the position that the connecting plate is close to the second end, and is formed with foretell third space between second guide wheel and the first guide wheel.

In order to enable the first guide wheel and the second guide wheel to be matched with each other better and ensure that lower-layer cloth with different thicknesses can automatically advance, a fixed plate and a support frame are arranged on the workbench, the first motor and the first guide wheel are arranged on the support frame, the support frame can be arranged on the fixed plate in a vertically sliding mode, and the first driving mechanism further comprises a second elastic piece which is always provided with a trend of pushing the support frame to move upwards so that the peripheral surface part of the first guide wheel is abutted against the peripheral surface of the second guide wheel.

In order to support the lower-layer cloth conveniently and allow the first guide wheel to penetrate out, a supporting plate is arranged on the table top of the workbench, the supporting plate is located below the material turning plate, the second gap is formed between the supporting plate and the material turning plate, and an opening for the first guide wheel to penetrate out is formed in the supporting plate.

Compared with the prior art, the utility model discloses a lower part that is used for sewing up turn-ups board of turn-ups mechanism of book end press has the shrink section that top-down shrinks gradually to the deflector direction, the existence of shrink section, the area of contact of turn-ups board lower extreme and lower floor's cloth has been reduced, thereby reduced and lower floor's frictional force between the cloth, thus, when needs turn over a book to the inhomogeneous double-layer cloth of thickness, the inhomogeneous lower floor's cloth of thickness that is located the second space also can smoothly remove along the direction of advance of cloth, frictional force can not block lower floor's cloth greatly because of turn-ups board and lower floor's cloth, thereby can conveniently realize turning over a book of the upper cloth of the inhomogeneous double-layer cloth of thickness, the commonality.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

FIG. 2 is a cross-sectional view of FIG. 1;

FIG. 3 is a schematic view of the structure of FIG. 2 at another angle;

FIG. 4 is a schematic structural view of a portion of the structure of FIG. 1;

FIG. 5 is a schematic view of the structure of FIG. 4 at another angle;

FIG. 6 is a schematic view of the structure of FIG. 4 with the air-blowing member removed;

fig. 7 is a schematic view of the structure of fig. 6 at another angle.

Detailed Description

The present invention will be described in further detail with reference to the following embodiments.

As shown in fig. 1 to 7, the flanging mechanism for sewing thread press of the embodiment of the present invention includes a workbench 100, a guide plate 2, an air blowing device 3, a first driving mechanism 4, a second driving mechanism 5, a third driving mechanism 6, a fourth driving mechanism 9, a support plate 8, a guide plate 10, an air blowing member 32 capable of blowing the cloth to be flat at any position, and a material turning plate 1 for turning over the upper cloth 71 of the sewn double-layer cloth 7 to one side of the sewing position 72.

In this embodiment, the forward direction along the cloth is forward, the reverse direction along the forward direction of the cloth is backward, the side of the material turning plate adjacent to the guide plate 2 is right, and the side of the material turning plate away from the guide plate 2 is left.

As shown in fig. 1 to 3, the guide plate 2 is disposed on one side of the material-turning plate 1 and on the right side of the material-turning plate 1, the guide plate 2 is at least partially located above the workbench 100, in this embodiment, the guide plate 2 is located on the table top of the workbench 100, and the longitudinal section of the guide plate 2 is "7", as shown in fig. 2 and 3; the guide plate 2 comprises an upper plate 21 and a baffle plate 22 for preventing the sewing part 72 from moving away from the material turning plate 1, and a cavity 1c for accommodating the sewing part 72 is formed between the guide plate 2 and the workbench 100; specifically, the table top of the workbench 100 is provided with a support plate 8, the guide plate 2 and the support plate 8 on the workbench enclose the cavity 1c, the baffle 22 is located at the right side of the support plate 8, and the baffle 22 is in contact with the support plate 8.

As shown in fig. 1 to 7, the material turning plate 1 is vertically disposed on the support 200, the material turning plate 1 is located above the working table 100, and the upper end surface of the material turning plate 1 gradually extends obliquely from bottom to top along the advancing direction of the fabric, that is, the upper end surface of the material turning plate 1 is an arc surface bending downwards, so that the double-layer fabric can be smoothly turned over without generating wrinkles on the material turning plate. As shown in fig. 3, a first gap 1a through which the upper cloth 71 of the double-layer cloth 7 passes is formed between the upper plate 21 of the guide plate 2 and the material-turning plate 1, and in the process that the cloth gradually moves forward, the upper cloth 71 passing through the first gap 1a is gradually folded toward the sewing position 72 under the action of the upper end surface of the material-turning plate 1. In addition, a second gap 1b for accommodating the lower layer cloth 73 of the double-layer cloth 7 is formed between the material-turning plate 1 and the working table 100, specifically, as shown in fig. 3, the support plate 8 is located below the material-turning plate 1, and the second gap 1b is formed between the support plate 8 and the material-turning plate 1. In order to reduce the contact area between the lower end of the material turning plate 1 and the lower layer of cloth 73 and further reduce the friction force between the lower end of the material turning plate 1 and the lower layer of cloth 73, as shown in fig. 2 and 3, the lower part of the material turning plate 1 is provided with a contraction section 11 which gradually contracts towards the direction of the guide plate 2 from top to bottom, that is, the material turning plate 1 comprises a vertical section 12 and a contraction section 11 arranged at the lower part of the vertical section 12, the contraction section 11 extends along the advancing direction of the cloth, and a second gap 1b for accommodating the lower layer of cloth 73 of the double layer of cloth 7 is formed between the lower end of the contraction section 11 and the workbench; the existence of the contraction section reduces the contact area between the lower end of the material turning plate and the lower layer of cloth and reduces the friction force between the lower end of the material turning plate and the lower layer of cloth. In order to make the lower layer cloth with uneven thickness advance smoothly, the side surface of the contraction section 11 on the side departing from the guide plate 2 is an inclined surface 112 which is inclined gradually towards the direction of the guide plate 2 from top to bottom. Further, the constricted section 11 and the vertical section 12 of the material turning plate 1 are located on the same vertical plane at the side surface adjacent to the guide plate 2 side, and the above-described first gap 1a is formed between the material turning plate 1 and the guide plate 2. Under the inhomogeneous condition of lower floor's cloth 73 thickness, the interval between inclined plane 112 and the workstation 100 increases, and the whole lower extreme of material turning plate 1 is less with the area of contact of lower floor's cloth 73, has reduced the frictional force between the cloth with lower floor to the lower floor's cloth of the double-deck cloth of being convenient for moves along the direction of advance of cloth. In addition, in order to conveniently install the double-layer cloth and conveniently turn over the upper-layer cloth subsequently, a guide plate 10 is arranged above the workbench 100, the guide plate 10 is located at the upstream of the material turning plate 1 along the advancing direction of the cloth, the position of the guide plate 10 close to the rear end is connected with the front end of the material turning plate 1, the upper-layer cloth 71 of the double-layer cloth is located above the guide plate 10, and the lower-layer cloth 73 is located below the guide plate 10.

In order to be suitable for the cloth materials with different thicknesses, as shown in fig. 6 and 7, the material turning plate 1 is connected with the power output end of the second driving mechanism 5, and the material turning plate 1 is driven by the second driving mechanism 5 to move up and down relative to the support plate 8 on the workbench 100, so that the material turning plate 1 is close to the support plate 8 to reduce the second gap 1b, and is far away from the support plate 8 to increase the second gap 1b, thereby being suitable for the lower layer cloth materials with different thicknesses, as shown in fig. 2 and 3. The second driving mechanism 5 comprises a third motor 51 and a fixing member 52, the third motor 51 is arranged on the bracket 200, one side of the fixing member 52 is connected with a power output end of the third motor 51, and the other side of the fixing member 52 is relatively and fixedly connected with the material stirring plate 1.

As shown in fig. 4 to 7, the guide plate 2 is connected to the power output end of the fourth driving mechanism 9, and the guide plate 2 is driven by the fourth driving mechanism 9 to move up and down relative to the support plate 8, so that the guide plate 2 is close to the support plate 8 to reduce the cavity 1c, and the guide plate 2 is far from the support plate 8 to enlarge the cavity 1c, thereby accommodating the double-layer cloth of the seams 72 with different thicknesses, as shown in fig. 2 and 3. The fourth driving mechanism 9 includes a second motor 91, a fixed frame 92 and a movable frame 93, the fixed frame 92 can be fixedly connected to the worktable 100, one side of the movable frame 93 is fixedly connected to the guide plate 2, the other side of the movable frame 93 is connected to an output shaft of the second motor 91, the movable frame 93 is slidably disposed on the fixed frame 92 in the up-and-down direction under the action of the second motor 91, and the movable frame 93 can drive the guide plate 2 to move up and down.

As shown in fig. 4 to 7, the guide plate 2 can move left and right under the driving of the third driving mechanism 6, so that the guide plate 2 is close to or far away from the material stirring plate 1, thereby on one hand, adjusting the size of the cavity 1c for placing the sewing place 72, so as to be capable of adapting to the sewing places 72 with different widths; on the other hand, the size of the first gap 1a between the material turning plate 1 and the guide plate 2 for the upper layer cloth 71 to penetrate through is adjusted, so as to adapt to the upper layer cloth with different thickness, as shown in fig. 2 and 3. The third driving mechanism 6 comprises a fourth motor 61 and a connecting frame 62, one side of the connecting frame 62 is connected with the fixed frame 92, and the other side is connected with the power output end of the fourth motor 61; in this embodiment, the third driving mechanism 6 has various structural forms, and only the guide plate 2 needs to move left and right relative to the material stirring plate 1.

According to the thickness condition of the cloth entering the flanging mechanism, the feeding distance can be adjusted by utilizing the second driving mechanism 5, the third driving mechanism 6 and the fourth driving mechanism 9, so that the cloth with different thicknesses or the cloth at the sewing positions with different widths can meet the use requirement of the flanging mechanism.

In order to blow the turned cloth smoothly and facilitate the pressing of the subsequent sewing machine, along the advancing direction of the cloth, as shown in fig. 1 and 7, an air outlet nozzle 31 of the air blowing device is located at the downstream position of the material turning plate 1, and the air outlet nozzle 31 is located above the cloth. In order to blow the cloth evenly at any position, at least one blowing member 32 is arranged on the support 200, the blowing member 32 is a flexible tube capable of moving telescopically, in this embodiment, two blowing members 32 are provided, and the two blowing members are both positioned above the workbench 100. The blowing device may be disposed on the work table 100, or may be disposed at other positions. The air blown out by the air blowing device through the air outlet nozzle 31 can blow the cloth evenly.

As shown in fig. 4 to 7, the first driving mechanism 4 is provided on the table 100, and drives the lower cloth 73 of the double-layered cloth 7 to move along the cloth advancing direction. The first driving mechanism 4 includes a first motor 41, a fixing plate 44, a supporting frame 45, a second elastic member 46, a first material guiding wheel 42 for pulling the lower cloth 73 to move forward, and a limiting structure 43 for limiting the lower cloth 73 to move upward.

As shown in fig. 4 to 7, the limiting structure 43 includes a second guiding wheel 431, a connecting plate 432 and a first elastic member 433 which always makes the second guiding wheel 431 have a downward moving tendency, a first end of the connecting plate 432 is rotatably disposed on the material turning plate 1, and the second guiding wheel 431 is rotatably disposed at a position of the connecting plate 432 adjacent to a second end through a rotating shaft. In this embodiment, the first elastic member is provided in the form: the bracket 200 is provided with a connecting seat 511, a connecting rod 52 penetrates through the connecting seat 511, the upper end of the connecting rod 52 is provided with an end 521 with an enlarged area, the lower end of the connecting rod 52 is provided with a connecting block 53, the upper end surface of the connecting block 53 is provided with an extending column 531 extending upwards, the connecting plate 432 is provided with a supporting piece for supporting the connecting block 53, the first elastic piece 433 is a first spring sleeved on the connecting rod, the upper end of the first spring abuts against the end 521 of the connecting rod 52, and the lower end of the first spring is sleeved on the extending column 531 and abuts against the connecting block 53, as shown in fig. 4 and 5; in addition, there are two sets of the limiting structures 43 respectively located at the left and right sides of the material turning plate 1, and the second material guiding wheels 431 of the two sets of limiting structures 43 are located above the first material guiding wheels 42.

The fixing plate 44 is arranged on the workbench 100 and located on the bottom surface of the workbench 100, the supporting frame 45 is arranged on the fixing plate 44 in a manner of sliding up and down, the first motor 41 and the first material guiding wheel 42 are both arranged on the supporting frame 45 of the workbench 100, the power output end of the first motor 41 can be connected with the first material guiding wheel 42, the first material guiding wheel 42 is located below the limiting structure 43, the supporting plate 8 is provided with an opening 81 through which a part of the corresponding first material guiding wheel 42 penetrates, and in addition, the upper plate 21 of the guide plate 2 is provided with a mouth 211 through which a part of the first material guiding wheel 42 penetrates at a position corresponding to the first material guiding wheel 42; one end of the second elastic member 46 abuts against the bottom plate of the supporting frame 45, the other end of the second elastic member 46 abuts against the supporting leg 441 of the fixing plate 44, and the second elastic member 46 always has a tendency of pushing the supporting frame 45 to move upwards so that the peripheral surface of the first material guiding wheel 42 partially abuts against the peripheral surfaces of the two second material guiding wheels 431; a third gap 4a for accommodating the lower cloth 73 is formed between the portion of the first guide wheel 42 passing through the opening 81 and the mouth 211 and the two second guide wheels 431, as shown in fig. 4 and 7. In this embodiment, the second material guiding wheel 431 and the first material guiding wheel 42 have the same axial direction.

The supporting frame 45 is provided with a first driving wheel 48 and a second driving wheel 47, which are engaged with each other, the first driving wheel 48 is disposed coaxially with the first material guiding wheel 42, and the second driving wheel 47 is disposed coaxially with the output shaft of the first motor 41, in this embodiment, the first driving wheel 48 and the second driving wheel 47 are connected by a chain wheel or a belt pulley is used for the first driving wheel 48 and the second driving wheel 47 and connected by a belt.

The flanging mechanism for the automatic sewing line pressing machine has the following working process:

when the double-layer cloth cutting machine is used, the double-layer cloth 7 is laid on the workbench 100, wherein the lower layer cloth 73 is attached to the supporting plate of the table top of the workbench 100 and located below the guide plate 2, the upper layer cloth covers the guide plate 2, at the moment, the sewing machine located on one side of the guide plate 2 starts to work, the corresponding side of the double-layer cloth 7 is sewn, a sewing position 72 is formed, and a gap is reserved between the lower needle position of the sewing machine and the edge of the cloth, so that redundant gap cloth needs to be cut off when sewing is conducted. The lower layer cloth 73 of the double-layer cloth after sewing is located between the material turning plate 1 and the support plate 8, and advances along with the double-layer cloth 7, wherein the upper layer cloth 71 gradually slides to the material turning plate 1, because the material turning plate 1 has a downward-bent arc-shaped surface along the advancing direction of the double-layer cloth, for the double-layer cloth 7, the upper layer cloth 71 in the double-layer cloth 7 is equivalent to the turnover plate 1 and continuously moves to the high place, and gradually expands to one side of the sewing position 72, and after being completely expanded, a turnover effect can be formed, namely after the double-layer cloth 7 is separated from the flanging mechanism, the whole double-layer cloth 7 is expanded, the original upper layer cloth is located on the right side of the original lower layer cloth, and the sewing position 72 is located.

Claims

1. A flanging mechanism for a sewing thread press comprises a workbench (100), a guide plate (2) and a material turning plate (1) for turning an upper layer cloth (71) of a sewn double-layer cloth (7) to one side of a sewing position (72), wherein the material turning plate (1) is positioned above the workbench (100); the guide plate (2) is arranged on one side of the material turning plate (1), at least part of the guide plate is positioned above the workbench (100), a cavity (1c) for accommodating a sewing part (72) is formed between the guide plate and the workbench (100), and a first gap (1a) for the upper layer cloth (71) of the double-layer cloth (7) to penetrate through is formed between the guide plate (2) and the material turning plate (1); the method is characterized in that: the lower part of the material turning plate (1) is provided with a contraction section (11) which gradually contracts from top to bottom, the contraction section (11) extends along the advancing direction of the cloth, and a second gap (1b) used for accommodating the lower-layer cloth (73) of the double-layer cloth (7) is formed between the lower end of the contraction section (11) and the workbench (100).

2. The turn-ups mechanism of claim 1, characterized in that: the side surface of the contraction section (11) on the side departing from the guide plate (2) is an inclined surface (112) which gradually inclines towards the direction of the guide plate (2) from top to bottom.

3. The turn-ups mechanism of claim 1, characterized in that: the cloth turnover device is characterized by further comprising an air blowing device used for blowing the turned and folded cloth flatly, and an air outlet nozzle (31) of the air blowing device is located at the downstream position of the material turnover plate (1) along the advancing direction of the cloth.

4. The turn-ups mechanism of claim 3, characterized in that: the cloth material blowing device further comprises at least one blowing piece (32) capable of blowing any position of the cloth material to be flat, and the blowing piece (32) is located above the workbench (100).

5. The turn-ups mechanism of claim 4, characterized in that: the blowing piece (32) is a flexible pipe capable of moving in a telescopic mode, and the flexible pipe is arranged above the workbench (100) through a support (200).

6. The turn-up mechanism according to any one of claims 1 to 5, characterized in that: the workbench (100) is provided with a first driving mechanism (4) for driving the lower-layer cloth (73) of the double-layer cloth (7) to move along the cloth advancing direction.

7. The turn-ups mechanism of claim 6, characterized in that: the first driving mechanism (4) comprises a first motor (41), a first guide wheel (42) used for pulling the lower cloth (73) to move forwards and a limiting structure (43) used for limiting the lower cloth (73) to move upwards, the first motor (41) is arranged on the workbench (100), the power output end of the first motor (41) can be connected with the first guide wheel (42), the first guide wheel (42) is located below the limiting structure (43), and a third gap (4a) used for accommodating the lower cloth (73) is formed between the first guide wheel (42) and the limiting structure (43).

8. The turn-ups mechanism of claim 7, characterized in that: the limiting structure (43) comprises a second material guiding wheel (431), a connecting plate (432) and a first elastic member (433) which enables the second material guiding wheel (431) to have a downward moving trend all the time, the first end of the connecting plate (432) is rotatably arranged on the material turning plate (1), the second material guiding wheel (431) is rotatably arranged on the position, close to the second end, of the connecting plate (432) through a rotating shaft, and the third gap (4a) is formed between the second material guiding wheel (431) and the first material guiding wheel (42).

9. The turn-ups mechanism of claim 8, characterized in that: the automatic feeding device is characterized in that a fixing plate (44) and a supporting frame (45) are arranged on the workbench (100), the first motor (41) and the first material guide wheel (42) are arranged on the supporting frame (45), the supporting frame (45) can be arranged on the fixing plate (44) in a vertically sliding mode, and the first driving mechanism (4) further comprises a second elastic piece (46) which is always provided with a trend of pushing the supporting frame (45) to move upwards so that the peripheral surface part of the first material guide wheel (42) is pressed on the peripheral surface of the second material guide wheel (431).

10. The turn-ups mechanism of claim 8, characterized in that: the supporting plate (8) is arranged on the table top of the workbench (100), the supporting plate (8) is located below the material turning plate (1), the second gap (1b) is formed between the supporting plate (8) and the material turning plate (1), and an opening (81) for the first material guide wheel (42) to partially penetrate out is formed in the supporting plate (8).