Blowing device for automatic sewing equipment

Abstract

The present invention relates to a blowing device of an automatic sewing device, the blowing device comprising: a blowing part, connected to the automatic sewing device through a first telescopic mechanism, used to blow straight the first cut piece and the second cut piece; a blowing compensation part, arranged opposite to the blowing part, and connected to the automatic sewing device through a second telescopic mechanism, used to blow straight the first cut piece and the second cut piece when the blowing part stops blowing. In the above scheme, by setting the blowing compensation part arranged opposite to the blowing part, it is possible to take over the blowing part to continue to blow straight the first cut piece and the second cut piece after the blowing part is withdrawn, without affecting the continued sewing of the first cut piece and the second cut piece, so that the first cut piece and the second cut piece can always be kept without curling during the sewing process, thereby improving the sewing quality, ensuring the stability of the sewing quality, and reducing the defective rate.

Description

Technical Field

[0001] The invention relates to the technical field of clothing production equipment, in particular to a blowing device of automatic sewing equipment. Background Art

[0002] As garment manufacturers increase automation, the garment-making process is gradually being replaced by automated sewing equipment rather than manual labor. In the production of knitted garments, there's a process called ribbing. Ribbing involves placing the ribbed and body pieces on a ribbing machine as desired, then sewing them together. When using automated sewing equipment, the edges of the pieces often curl due to the material of the pieces. This problem can be addressed using a blower.

[0003] In existing automatic sewing equipment, the blower must be retracted when sewing the last section of the ribbing leg to prevent the threaded piece from being blocked by the blower and preventing further sewing. When the blower is retracted, the piece, without the support plate and air, will curl, resulting in poor sewing results for the last section of the ribbing leg, unstable stitches, significantly reduced quality, high defective rates, and increased production costs. Summary of the Invention

[0004] Based on this, it is necessary to provide a blowing device for automatic sewing equipment, aiming to solve the problem that the blowing device in the prior art is not suitable for sewing the last part of the rib foot.

[0005] The present application provides a blowing device for an automatic sewing machine, the blowing device comprising:

[0006] A blowing unit connected to the automatic sewing device via a first telescopic mechanism, for blowing the first and second cut pieces straight;

[0007] The blowing compensation part is arranged opposite to the blowing part and is connected to the automatic sewing equipment through a second telescopic mechanism, and is used for straightening the first piece and the second piece when the blowing part stops blowing.

[0008] In the above scheme, by setting a blowing compensation part arranged opposite to the blowing part, the blowing part can be replaced by the blowing part to continue to blow the first and second pieces straight after the blowing part is withdrawn, without affecting the continued sewing of the first and second pieces, so that the first and second pieces can always be kept free of curling during the sewing process, thereby improving the sewing quality, ensuring the stability of the sewing quality, and reducing the defective rate.

[0009] The technical solution of this application is further described below:

[0010] In one embodiment, the blowing part includes an upper blowing plate and a lower blowing plate, and the upper blowing plate and the lower blowing plate are arranged in parallel so that in the blowing state, the upper blowing plate and the lower blowing plate are respectively located above the first piece and the second piece.

[0011] In one embodiment, the upper air blowing plate and the lower air blowing plate are both provided with an air inlet and an air outlet, and a ventilation duct for connecting the air inlet and the air outlet is provided inside the upper air blowing plate or the lower air blowing plate.

[0012] In one embodiment, the blowing compensation portion includes a blowing plate, the blowing plate is provided with an air outlet unit, and the blowing direction of the air outlet unit is toward the blowing portion.

[0013] In one embodiment, the air outlet unit includes an air outlet pipe externally disposed on the air blowing plate, and the air outlet pipe is fixedly connected to the upper surface of the air blowing plate.

[0014] In one embodiment, the blowing compensation portion further includes a cutting piece support plate, which is higher than the blowing plate in the vertical direction, so that in the blowing state, the first cutting piece and the second cutting piece are supported by the cutting piece support plate without being attached to the blowing plate.

[0015] In one embodiment, the cutting plate is connected to the second telescopic mechanism.

[0016] In one embodiment, in the blowing direction of the air outlet plate, the cutting piece support plate is located on one side of the air outlet plate and has a smooth surface.

[0017] In one embodiment, the blowing device further includes a sensing device for sensing the distance between the stitched portions of the first and second panels and the blowing portion.

[0018] In one embodiment, the blowing device further includes an adjusting device, and the adjusting device controls the extension and / or shortening of the first telescopic mechanism and the second telescopic mechanism according to the sensing result of the sensing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The drawings constituting a part of this application are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute improper limitations on the present invention.

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0021] Figure 1 A structural diagram of a blowing device of an automatic sewing machine according to an embodiment of the present invention;

[0022] Figure 2 for Figure 1 Schematic diagram from another perspective;

[0023] Figure 3 for Figure 2 A magnified schematic diagram of point A;

[0024] Figure 4 This is a sewing diagram.

[0025] Description of reference numerals:

[0026] 400, blowing device; 410, blowing part; 411, first telescopic mechanism; 412, upper blowing plate; 413, lower blowing plate; 414, air inlet; 415, air outlet; 420, blowing compensation part; 421, second telescopic mechanism; 422, blowing plate; 423, air outlet pipe; 424, cutting piece support plate; 430, sensing device; 500, sewing device; 20, first cutting piece; 30, second cutting piece. DETAILED DESCRIPTION

[0027] To make the above-mentioned objects, features, and advantages of the present invention more readily apparent, specific embodiments of the present invention are described in detail below with reference to the accompanying drawings. The following description sets forth numerous specific details to facilitate a full understanding of the present invention. However, the present invention can be implemented in many other ways than those described herein, and those skilled in the art may make similar modifications without departing from the scope of the present invention. Therefore, the present invention is not limited to the specific embodiments disclosed below.

[0028] like Figure 4 As shown, during the sewing process, the first and second panels 20, 30 need to be wound around two tensioning wheels to form a closed loop, with one panel nested between the other panel and the tensioning wheels (in this application, the first panel 20 is assumed to be between the second panel 30 and the tensioning wheels). The two tensioning wheels can drive the first and second panels 20, 30 to rotate together around the two tensioning wheels, so that the first and second panels 20, 30 are connected as a whole after sewing. During the sewing process, a blowing device 400 is required to straighten the first and second panels 20, 30 to prevent them from curling.

[0029] like Figures 2 to 4As shown, to achieve a straightening effect on the first and second panels 20, 30, the conventional blowing device 400 is provided with multiple air outlets 415, each located above the first and second panels 20, 30. At least one air outlet 415 is located between the first and second panels 20, 30. Because the first and second panels 20, 30 are in a closed loop, as they rotate, they are sewn together by the sewing device 500. The unsewn areas between the first and second panels 20, 30 gradually decrease, and the gap between the first and second panels 20, 30 also becomes smaller and smaller. At this point, if the blowing device 400 remains between the first and second panels 20, 30, the sewing will be affected, and the blowing device 400 needs to be withdrawn. However, even after the blowing device 400 is withdrawn, the first and second panels 20, 30 still face the risk of curling.

[0030] In response to the above problem, an obvious solution is to improve the blowing structure of the blowing device 400 so that the air outlet 415 of the air outlet device is located above or below the first and second panels 20, 30, or the air outlet 415 is located below the first and second panels 20 and above the second panels 30, respectively, and the existing air outlet 415 located on the brackets of the first and second panels 20, 30 is eliminated. However, such a setting, before the first and second panels 20, 30 are sewn or when the sewn parts are relatively small, has the risk of causing the first and second panels 20, 30 to curl together, and the sewing quality cannot be guaranteed. Compared with the prior art in which the first and second panels 20, 30 may curl after the blowing device 400 is retracted, this improvement method is even less effective and is obviously not suitable as a technical solution to the problems of the prior art.

[0031] Based on this, Figures 1 to 3 As shown, the present application proposes a blowing device 400 of an automatic sewing device, which includes: a blowing section 410, which is connected to the automatic sewing device through a first telescopic mechanism 411, and is used to straighten the first piece 20 and the second piece 30; a blowing compensation section 420, which is arranged opposite to the blowing section 410 and is connected to the automatic sewing device through a second telescopic mechanism 421, and is used to straighten the first piece 20 and the second piece 30 when the blowing section 410 stops blowing.

[0032] It is understood that the purpose of the blowing unit 410 and the blowing compensation unit 420 is to prevent the edge of the cut piece from curling. Generally speaking, curling occurs at the edge of the cut piece and curls inward from the edge of the cut piece. Therefore, the blowing direction of the blowing unit 410 and the blowing compensation unit 420 should include a direction perpendicular to the direction of travel of the cut piece. It is understood that the direction of travel of the cut piece is parallel to the direction of the line connecting the centers of the two tensioning wheels.

[0033] It is understood that the blowing compensation portion 420 serves to supplement the blowing effect of the blowing portion 410. It can be used to blow air to the first and second panels 20, 30 when the blowing portion 410 is withdrawn and paused, allowing the first and second panels 20, 30 to straighten under the action of the wind and prevent curling. It should be noted that the blowing compensation portion 420 can also be used alone, for example, in sewing panels for small-sized clothing.

[0034] It is understood that the first telescopic mechanism 411 can drive the blowing unit 410 to move relative to the automatic sewing device, so that the blowing unit 410 moves closer to or away from the first and second panels 20, 30 in a direction perpendicular to the travel of the panels. Similarly, the second telescopic mechanism 421 can drive the blowing compensation unit 420 to move relative to the automatic sewing device, so that the blowing compensation unit 420 moves closer to or away from the first and second panels 20, 30 in a direction perpendicular to the travel of the panels.

[0035] Specifically, if Figure 1 and Figure 2 As shown, in this embodiment, one end of the first telescopic mechanism 411 is fixedly connected to the automatic sewing equipment, and the other end is connected to the blowing part 410, as shown in FIG. Figure 1 As shown, when the first telescopic mechanism 411 is extended, the blowing portion 410 is close to the first and second cutting pieces 20 and 30, as shown in FIG. Figure 2 As shown, when the first telescopic mechanism 411 is shortened, the blowing portion 410 moves away from the first panel 20 and the second panel 30 .

[0036] like Figure 1 As shown, in this embodiment, one end of the second telescopic mechanism 421 is connected to the automatic sewing equipment, and the other end of the second telescopic mechanism 421 and the blowing compensation part 420 are both connected to a connecting vertical plate, and the second telescopic mechanism 421 and the blowing compensation part 420 are located on the same side of the connecting vertical plate, so that when the second telescopic mechanism 421 is extended, the blowing compensation part 420 is away from the first piece 20 and the second piece 30, and when the second telescopic mechanism 421 is shortened, the blowing compensation part 420 is close to the first piece 20 and the second piece 30.

[0037] It can be understood that the first telescopic mechanism 411 drives the blowing part 410 and the second telescopic mechanism 421 drives the blowing compensation part 420 to move closer to or away from the first piece 20 and the second piece 30, wherein close or away refers to the relative position of the blowing part 410 or the blowing compensation part 420 and the first piece 20 and the second piece 30 on a plane parallel to the plane where the pieces are located when the first telescopic mechanism 411 or the second telescopic mechanism 421 is extended or shortened. It can be understood that the blowing part 410 or the blowing compensation part 420 is relatively close to or relatively away from the first piece 20 and the second piece 30 when the first telescopic mechanism 411 or the second telescopic mechanism 421 is extended or shortened, and is not limited to the position close to the first piece 20 and the second piece 30 as the position close to the first piece 20 and the second piece 30, nor is it limited to the position away from the first piece 20 and the second piece 30 as the position not in contact with the first piece 20 and the second piece 30.

[0038] Specifically, when the first telescopic mechanism 411 is extended, the blowing portion 410 approaches the first panel 20 and the second panel 30. At this time, the end of the blowing portion 410 farthest from the first telescopic mechanism 411 can be close to the first panel 20 and the second panel 30, or can have exceeded the edge of the first panel 20 or the second panel 30 (the edge near the blowing portion 410), so that the blowing portion 410 is located above or below the first panel 20 and the second panel 30. When the first telescopic mechanism 411 is shortened, the blowing portion 410 moves away from the first panel 20 and the second panel 30. At this time, the end of the blowing portion 410 farthest from the first telescopic mechanism 411 must be retracted to the outside of the edge of the first panel 20 and the second panel 30 so that the blowing portion 410 does not affect the sewing of the first panel 20 and the second panel 30.

[0039] Similarly, when the second telescopic mechanism 421 is extended, the blowing compensation part 420 moves away from the first piece 20 and the second piece 30. At this time, the blowing compensation part 420 can be withdrawn to the outside of the edge of the first piece 20 and the second piece 30 (the edge of one side of the near blowing compensation part 420), or it can still exceed the edge of the first piece 20 or the second piece 30, but withdraw toward the side of the far blowing part 410 when the second telescopic mechanism 421 is shortened.

[0040] It should be noted that the function of the first telescopic mechanism 411 and the second telescopic mechanism 421 is to drive the blowing part 410 or the blowing compensation part 420 to move. They can be telescopic cylinders, electric push rods, etc. In this embodiment, the first telescopic mechanism 411 and the second telescopic mechanism 421 are both telescopic cylinders.

[0041] In the above scheme, by setting the blowing compensation part 420 which is arranged opposite to the blowing part 410, the blowing part 410 can be replaced by the blowing part 410 to continue to blow the first piece 20 and the second piece 30 straight after the blowing part 410 is withdrawn, without affecting the continued sewing of the first piece 20 and the second piece 30, so that the first piece 20 and the second piece 30 can always be kept without curling during the sewing process, thereby improving the sewing quality, ensuring the stability of the sewing quality, and reducing the defective rate.

[0042] See also Figure 4 The blowing device 400 further includes a sensing device 430 for sensing the distance between the stitched portions of the first and second panels 20 and 30 and the blowing portion 410 .

[0043] Specifically, the function of the sensing device 430 is to sense the distance between the stitched parts of the first and second panels 20 and 30 so that when the blowing unit 410 may affect the stitching of the first and second panels 20 and 30, the blowing unit 410 can be withdrawn in time.

[0044] Specifically, sensing device 430 can be a contact sensor, whose contacts are activated by the contact and compression of two objects. Common examples include limit switches and two-dimensional matrix position sensors. When a moving object strikes a limit switch, its internal contacts activate, thereby achieving control. During use, sensing device 430 can be positioned between first and second panels 20, 30. When a stitched portion of first and second panels 20, 30 approaches sensing device 430, the stitched portion will contact sensing device 430, causing sensing device 430 to emit a signal.

[0045] The sensing device 430 can also be a proximity switch, which emits an "action" signal when an object approaches a set distance from it, without requiring direct contact with the object. There are many types of proximity switches, including electromagnetic, photoelectric, differential transformer, eddy current, capacitor, reed switch, and Hall effect types. During use, the set distance is the distance between the blowing unit 410 and the stitched portion of the first and second panels 20, 30, which may affect the sewing of the first and second panels 20, 30. When the stitched portion of the first and second panels 20, 30 reaches the set distance, the sensing device 430 emits a signal.

[0046] Furthermore, the blowing device 400 also includes an adjustment device that controls the extension and / or contraction of the first and second telescopic mechanisms 411 and 421 based on the sensing result of the sensing device 430. Specifically, when the adjustment device receives a signal from the sensing device 430, the adjustment device controls the first telescopic mechanism 411 to contract so that the blowing portion 410 moves away from the first and second panels 20 and 30. At this time, the end of the blowing portion 410 farther from the first telescopic mechanism 411 must be retracted to the outside of the edge of the first and second panels 20 and 30 so that the blowing portion 410 does not affect the sewing of the first and second panels 20 and 30. The adjustment device controls the second telescopic mechanism 421 to contract so that the blowing compensation portion 420 moves closer to the first and second panels 20 and 30, thereby taking over from the blowing portion 410 and continuing to straighten the first and second panels 20 and 30 without affecting the continued sewing of the first and second panels 20 and 30.

[0047] See also Figure 2 、 Figure 3 and Figure 4 In one embodiment, the blowing portion 410 includes an upper blowing plate 412 and a lower blowing plate 413 arranged in parallel. The upper blowing plate 412 and the lower blowing plate 413 are respectively located above the first cut piece 20 and the second cut piece 30 when the blowing portion 410 is in the blowing state.

[0048] like Figure 4 As shown, in this embodiment, on the plane where the sewing device 500 is located, the first panel 20 is located below the second panel 30, that is, the first panel 20 is located between the second panel 30 and the tensioning wheel. At this time, the upper air blowing plate 412 is located above the second panel 30, and the lower air blowing plate 413 is located above the first panel 20, that is, the lower air blowing plate 413 is located between the first panel 20 and the second panel 30.

[0049] See also Figure 3 Furthermore, the upper air blowing plate 412 and the lower air blowing plate 413 are both provided with an air inlet 414 and an air outlet 415 , and a ventilation duct for connecting the air inlet 414 and the air outlet 415 is provided inside the upper air blowing plate 412 or the lower air blowing plate 413 .

[0050] It will be appreciated that the air inlet 414 is intended to admit the air necessary to straighten the first or second panel 20, 30. The air inlet 414 should be connected to a device capable of supplying air, such as a blower via an air duct. The ventilation duct connects the air inlet 414 and the air outlet 415, conveying the air from the air inlet 414 to the air outlet 415. The air outlet 415 directs the air toward the first or second panel 20, 30, preventing the first or second panel 20, 30 from curling due to the wind.

[0051] It should be noted that if Figure 3As shown, the air outlet 415 can be provided on the upper surface or lower surface of the upper air blowing plate 412 or the lower air blowing plate 413. However, in order to achieve the best blowing effect of the air blowing portion 410, the blowing direction should be parallel to the plane where the first panel 20 or the second panel 30 is located. Therefore, the upper air blowing plate 412 and the lower air blowing plate 413 can be provided with a blowing tab with a side wall opening to adjust the blowing direction. The blowing tab covers the air outlet 415, and the hollow interior of the blowing tab allows the side wall opening to communicate with the air outlet 415, thereby adjusting the blowing direction to be parallel to the plane where the first panel 20 or the second panel 30 is located. In addition, the blowing tab can be configured to rotate relative to the air outlet 415, so that the direction can be adjusted on a plane parallel to the plane where the first panel 20 or the second panel 30 is located by rotating the blowing tab.

[0052] See also Figure 1 The blowing compensation portion 420 includes a blowing plate 422 , and the blowing plate 422 is provided with an air outlet unit, and the blowing direction of the air outlet unit is toward the blowing portion 410 .

[0053] It can be understood that since the blowing compensation part 420 and the blowing part 410 are arranged relative to each other, and the cut piece is located between the blowing compensation part 420 and the blowing part 410, the blowing direction of the blowing compensation part 420 is toward the direction of the blowing part 410, that is, toward the cut piece.

[0054] It can be understood that the function of the air outlet unit is to make the wind blow toward the first cut piece 20 or the second cut piece 30. The structure of the air outlet unit can be similar to the upper air blowing plate 412 or the lower air blowing plate 413, and an air inlet 414, an air outlet 415 and a ventilation duct connecting the air inlet 414 and the air outlet 415 are provided. Ventilation can also be directly carried out in the blowing direction through the air outlet pipe 423.

[0055] See also Figure 1 In this embodiment, the air outlet unit includes an air outlet pipe 423 externally disposed on the air blowing plate 422 , and the air outlet pipe 423 is fixedly connected to the upper surface of the air blowing plate 422 .

[0056] It can be understood that one end of the air outlet pipe 423 is facing the blowing direction, and is used to blow air toward the first piece 20 and the second piece 30 to prevent the first piece 20 or the second piece 30 from curling. The other end of the air outlet pipe 423 should be connected to a device that can input air, such as a blower connected through an air supply duct.

[0057] It can be understood that the air outlet pipe 423 is fixedly connected to the blowing plate 422, which means that the air outlet pipe 423 can move synchronously with the blowing plate 422, and is relatively stationary without displacement. The connection method can be gluing, welding, snap connection, etc. In this embodiment, the air outlet pipe 423 is welded to the blowing plate 422.

[0058] like Figure 1 and Figure 2 As shown, in this embodiment, the air outlet pipe 423 is L-shaped, and one end of the air outlet pipe 423 is located on the upper surface of the blowing plate 422, and is used to blow air toward the first cut piece 20 and the second cut piece 30. The other end of the air outlet pipe 423 passes through the blowing plate 422 and is located on the lower surface of the blowing plate 422, and is used to connect a device that can input air.

[0059] See also Figure 1 and Figure 2 In one embodiment, the blowing compensation unit 420 further includes a piece support plate 424. The piece support plate 424 is higher than the blowing plate 422. When the blowing compensation unit 420 is in the blowing state, the first piece 20 and the second piece 30 are supported by the piece support plate 424 and are not attached to the blowing plate 422. This prevents the first piece 20 and the second piece 30 from affecting the blowing effect of the blowing plate 422. In other words, in a direction perpendicular to the plane in which the first piece 20 and the second piece 30 lie, the piece support plate 424 is closer to the first piece 20 and the second piece 30 than the blowing plate 422.

[0060] It is understandable that if Figure 4 As shown, the first cut piece 20 and the second cut piece 30 are arranged in parallel, and the blowing compensation part 420 is located below the first cut piece 20. Therefore, in the direction perpendicular to the plane where the first cut piece 20 and the second cut piece 30 are located, the cut piece support plate 424 is closer to the first cut piece 20 and the second cut piece 30 than the blowing plate 422. The cut piece support plate 424 is higher than the blowing plate 422, and plays a supporting role for the first cut piece 20 and the second cut piece 30.

[0061] Furthermore, the cutting piece support plate 424 is connected to the second telescopic mechanism 421 .

[0062] It is understood that the cutting plate 424 can be fixedly connected to the second telescopic mechanism 421, that is, the cutting plate 424 can be relatively stationary and not move relative to the second telescopic mechanism 421, and the connection method can be gluing, welding, threading, snap connection, etc. Similarly, the cutting plate 424 can also be slidably connected to the second telescopic mechanism 421, so that the cutting plate 424 can be adjusted according to the position of the cutting plate to accommodate cutting plates of different widths.

[0063] In this embodiment, the cutting piece support plate 424 is slidably connected to the second telescopic mechanism 421. Figure 1As shown, the cutting plate 424 is connected to the end of the second telescopic mechanism 421 that is connected to the automatic sewing equipment. The cutting plate 424 can be slid to the side of the second telescopic mechanism 421 near the air outlet and fixed. When not manually adjusted, the cutting plate 424 does not move relative to the automatic sewing equipment. In this case, regardless of whether the blowing compensation unit 420 is blowing or not, the cutting plate 424 can support the first and second cutting plates 20, 30.

[0064] See also Figure 1 Furthermore, a smooth panel support 424 is located on one side of the air outlet plate in the direction of the air flow from the air outlet plate. It is understood that the air flow from the air outlet plate is directed toward the air outlet portion, parallel to the plane where the first and second panels 20, 30 lie, and perpendicular to the direction of travel of the first and second panels 20, 30. The panel support 424 is located on one side of the air outlet plate to support the first and second panels 20, 30 when the air outlet plate blows air, preventing the panels from sticking to the air outlet plate and affecting the air flow.

[0065] It can be understood that the cutting piece support plate 424 is used to support the first cutting piece 20 and the second cutting piece 30, and needs to be in contact with the first cutting piece 20 or the second cutting piece 30. Its smooth surface can prevent the first cutting piece 20 or the second cutting piece 30 from being hooked, thereby protecting the first cutting piece 20 and the second cutting piece 30.

[0066] The technical features of the above-mentioned embodiments can be combined arbitrarily. In order to make the description concise, not all possible combinations of the technical features in the above-mentioned embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0067] The above-described embodiments merely illustrate several implementations of the present invention, and while their descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent. It should be noted that a person skilled in the art would be able to make numerous variations and improvements without departing from the spirit of the present invention, all of which fall within the scope of protection of the present invention. Therefore, the scope of protection of the patent for this invention shall be determined by the appended claims.

[0068] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like to indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as limiting the present invention.

[0069] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "plurality" means at least two, such as two, three, etc., unless otherwise specifically defined.

[0070] In the present invention, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integration; mechanical connection, electrical connection; direct connection, or indirect connection through an intermediate medium; internal communication between two components, or interaction between two components, unless otherwise specified. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0071] In the present invention, unless otherwise expressly specified or limited, when a first feature is "above" or "below" a second feature, it may mean that the first and second features are in direct contact, or that the first and second features are in indirect contact through an intermediary. Furthermore, when a first feature is "above," "above," or "above" a second feature, it may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. When a first feature is "below," "below," or "below" a second feature, it may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature.

[0072] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be an intermediate element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be an intermediate element. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used herein are for illustrative purposes only and do not represent the only implementation methods.

Claims

1. A blowing device for automatic sewing equipment, characterized in that: The blowing device comprises: A blowing unit, connected to the automatic sewing device through a first telescopic mechanism, for blowing the first cut piece and the second cut piece straight; A blowing compensation part, which is arranged opposite to the blowing part and connected to the automatic sewing device through a second telescopic mechanism, and is used for straightening the first cut piece and the second cut piece when the blowing part stops blowing; The blowing device further includes a sensing device, which is located between the first and second pieces and is used to sense the distance between the stitched parts of the first and second pieces and the blowing part; the blowing device further includes an adjusting device, which controls the first and second telescopic mechanisms to extend and / or shorten according to the sensing result of the sensing device; When the stitched parts of the first and second pieces are close to the sensing device, the sensing device sends a signal; when the adjusting device receives the signal sent by the sensing device, the adjusting device controls the first telescopic mechanism to shorten so that the blowing part is away from the first and second pieces, and the end of the blowing part away from the first telescopic mechanism is withdrawn to the outside of the edges of the first and second pieces; the adjusting device controls the second telescopic mechanism to shorten so that the blowing compensation part is close to the first and second pieces, so as to take over the blowing part and continue to straighten the first and second pieces.

2. The blowing device of the automatic sewing equipment according to claim 1 is characterized in that: The blowing part includes an upper blowing plate and a lower blowing plate, and the upper blowing plate and the lower blowing plate are arranged in parallel so that in a blowing state, the upper blowing plate and the lower blowing plate are respectively located above the first cut piece and the second cut piece.

3. The blowing device of the automatic sewing equipment according to claim 2 is characterized in that: The upper air blowing plate and the lower air blowing plate are both provided with an air inlet and an air outlet, and a ventilation duct for connecting the air inlet and the air outlet is provided inside the upper air blowing plate or the lower air blowing plate.

4. The blowing device of the automatic sewing equipment according to claim 1, characterized in that: The blowing compensation portion includes a blowing plate, the blowing plate is provided with an air outlet unit, and the blowing direction of the air outlet unit is toward the blowing portion.

5. The blowing device of the automatic sewing equipment according to claim 4 is characterized in that: The air outlet unit comprises an air outlet pipe externally arranged on the air blowing plate, and the air outlet pipe is fixedly connected to the upper surface of the air blowing plate.

6. The blowing device of the automatic sewing equipment according to claim 4, characterized in that: The blowing compensation part further includes a cutting piece supporting plate, which is higher than the blowing plate in a vertical direction, so that in a blowing state, the first cutting piece and the second cutting piece are supported by the cutting piece supporting plate without being attached to the blowing plate.

7. The blowing device of the automatic sewing equipment according to claim 6, characterized in that: The cutting piece supporting plate is connected to the second telescopic mechanism.

8. The blowing device of the automatic sewing equipment according to claim 6, characterized in that: In the blowing direction of the blowing plate, the cutting piece supporting plate is located on one side of the blowing plate and has a smooth surface.

9. The blowing device of the automatic sewing equipment according to claim 1, characterized in that: The sensing device is a contact sensor.

10. The blowing device of the automatic sewing equipment according to claim 1, characterized in that: The sensing device is a proximity switch.

Images