A device and method for folding sleeve gussets

Abstract

This invention discloses a device and method for folding sleeve gussets. It adds an auxiliary pressing mechanism to the original method. The auxiliary pressing mechanism includes a main movable seat, a first assembly consisting of a rotary motor and an upper pressing block, and a second assembly consisting of a pushing cylinder and a pusher plate. The rotary motor drives the upper pressing block to rotate downwards until it presses against the sword-shaped positioning plate. Then, the pushing cylinder pushes the pusher plate towards the front end of the pressure plate, causing the folding part to fold from bottom to top until the pusher plate presses the folding part onto the upper surface of the pressure plate, so that the folding part is completely folded upwards and inwards. Using the solution of this invention, the folding process can be further optimized.

Description

Technical Field

[0001] This invention relates to the field of sewing equipment technology, and more specifically, to a device and method for folding sleeve gussets. Background Technology

[0002] Shirt cuffs often require the addition of sleeve vents to prevent frayed edges and unevenness that affect the appearance. As is common knowledge, when sewing with a sewing machine, the visible stitches on the outside of the fabric are called topstitching, while the invisible stitches on the inside are called concealed stitching. Topstitching produced by a sewing machine is generally considered more aesthetically pleasing and fuller than concealed stitching. Currently, sleeve vents made using a sleeve folding machine are typically folded with the wrong side facing up before the cuff piece is inserted into the vent for sewing. Therefore, the wrong side of the sleeve vent has topstitching while the right side has concealed stitching, resulting in an unattractive appearance on the front of the sewn sleeve vent.

[0003] The applicant filed a Chinese patent application on September 21, 2023, with publication number CN117265788A and publication date December 22, 2023. This patent provides a sleeve folding device and a sleeve folding method. The sleeve folding device and its machine base are fixedly installed with a lower piece folding mechanism, a lifting plate located on the same side as the lower piece folding mechanism, and an upper piece folding mechanism. This invention divides the sleeve folding mechanism into two independent lower piece folding mechanisms and an upper piece folding mechanism. The upper piece folding mechanism can be flipped as a whole, allowing the folded, sword-shaped upper piece with an inwardly folded edge to be folded onto the lower piece, so that the newly folded sleeve fold faces upwards, resulting in a visible seam on the front of the sleeve fold during subsequent sewing.

[0004] Although the above solutions can make the front of the sleeve placket more aesthetically pleasing, optimizing the manufacturing process is always the direction for technological improvement. Summary of the Invention

[0005] The purpose of this invention is to provide a device and method for folding sleeves, which adds an auxiliary pressing scheme to the original method, thereby significantly improving the process.

[0006] The object of the present invention is achieved as follows: a device for folding sleeve gussets, comprising:

[0007] A positioning platform that supports the sleeve fork fabric piece when the sleeve fork is folded;

[0008] Several folding plates are set on the positioning platform, and each folding plate is driven by its driving unit to perform folding action;

[0009] A strip-shaped, sword-shaped positioning plate for shaping, which is driven by a drive unit to flatten the sword-shaped portion of the sleeve fork fabric piece;

[0010] Auxiliary pressing mechanism;

[0011] The auxiliary pressing mechanism includes:

[0012] The main movable seat is horizontally movable and moves to the operating position of the positioning table when the sleeve folds;

[0013] The first assembly consists of a rotary motor and an upper pressure block. The rotary motor is mounted on the main movable seat, and the rotary output end of the rotary motor is fixedly connected to the upper pressure block. During the folding of the sleeve fork, the rotary motor drives the upper pressure block to rotate downward to press against the sword-shaped positioning plate.

[0014] The second assembly consists of a push cylinder and a push plate. The push cylinder is mounted on the main movable seat and is used for linear output in the horizontal direction. Its output end is fixedly connected to the push plate. During the folding process of the sleeve fork, the push plate supports the folded part of the sleeve fork fabric and folds the folded part under the horizontal push of the push cylinder.

[0015] Furthermore, the auxiliary pressing mechanism also includes:

[0016] Fixed base frame;

[0017] A horizontally arranged displacement cylinder has its cylinder barrel fixedly connected to a fixed base frame, and the main movable seat is fixedly connected to the piston rod of the displacement cylinder and moves horizontally with the fixed base frame.

[0018] Furthermore, the auxiliary pressing mechanism also includes a slide rail and a guide block. The slide rail is parallel to the displacement cylinder and is fixedly connected to the main movable seat. The guide block is fixedly connected to the fixed base frame and has a guide groove that is parallel to the slide rail and slides with the slide rail.

[0019] Furthermore, it also includes a pressure plate and a displacement mechanism. The displacement mechanism has degrees of freedom of movement in the vertical and horizontal directions. Driven by the displacement mechanism, the pressure plate presses down on the sleeve fork fabric piece during the folding process and cooperates with the push plate to fold the folded part.

[0020] Furthermore, the displacement cylinder is perpendicular to the length direction of the sword-shaped positioning plate.

[0021] As another aspect of the present invention, a method for folding sleeve gussets is proposed based on the above-mentioned device. In the process of folding sleeve gussets, a flipping folding step is included. In this step, the flipping frame is driven by the drive unit to flip upward, so that the movable part of the positioning table flips up 90°, the sword-shaped part of the sleeve gusset piece is bent upward 90°, the gusset seam of the garment piece is aligned and the sword-shaped part of the sleeve gusset piece is inserted, and then the sleeve gusset piece is folded to form a sword-shaped sleeve gusset that clamps the garment piece.

[0022] The method also includes the following steps in sequence:

[0023] S1. Assisted pressing preparation step: Use the piston rod of the displacement cylinder to push the main movable seat to the operating position of the positioning table, so that the rotary motor, upper pressure block, push cylinder and push plate are all on the positioning table.

[0024] S2, Pressing down step: The sword-shaped positioning plate and the pressure plate are extended by their respective driving units, and then the sleeve fork piece is pressed down, so that the sword-shaped positioning plate flat presses the sword-shaped part of the sleeve fork piece, and the pressure plate presses down on the other part of the sleeve fork piece.

[0025] S3, Assisted pressing action steps: The rotary motor drives the upper pressure block to rotate downward until the upper pressure block presses against the sword-shaped positioning plate. Then, the push cylinder pushes the push plate towards the front end of the pressure plate, so that the folding part folds from bottom to top until the push plate presses the folding part onto the upper plate surface of the pressure plate, so that the folding part is completely folded upward and inward. In this step, all the folding plates are driven by the drive unit to perform folding operations on the sleeve fork cutting pieces.

[0026] S4. Retraction step: Use the push cylinder to pull the push plate back, the rotary motor drives the upper pressure block to rotate upward, release the sword-shaped positioning plate, and then use the retraction action of the piston rod of the displacement cylinder to take the main moving seat away from the positioning table.

[0027] After step S4 is completed, perform the above flipping and folding steps.

[0028] During the folding process of the sleeve fork, the sleeve fork piece is fixed to the upper surface of the positioning table by negative pressure adsorption.

[0029] The beneficial effects of this invention are as follows:

[0030] 1. An auxiliary pressing mechanism was added to the original process, and the auxiliary pressing method was implemented using the auxiliary pressing mechanism, which significantly improved the process.

[0031] 2. During the assisted pressing process, the upper pressure block is used to press down on the sword-shaped positioning plate, which effectively limits the positioning of the sword-shaped positioning plate;

[0032] 3. The cylinder drives the pusher to fold the folded part of the sleeve fork piece, which is equivalent to adding a folded edge on the basis of existing technology, making the sewing connection between the sleeve fork and the garment piece more robust. Attached Figure Description

[0033] Figure 1 This is a structural diagram of the auxiliary pressing mechanism in this invention.

[0034] Figure 2 This is a schematic diagram of the installation position of the auxiliary pressing mechanism in this invention.

[0035] Figure 3This is a schematic diagram showing the usage state of the auxiliary pressing mechanism in this invention.

[0036] Figure 4 yes Figure 3 Enlarged view of part A in the image.

[0037] Figure 5 This is a schematic diagram illustrating the principle of folding using a pusher plate.

[0038] Figure 6 This is a simplified flowchart of the overall process for folding the sleeve gussets.

[0039] Figure 7 This is a schematic diagram showing how a rotary motor drives an upper pressure block to press down on a sword-shaped positioning plate.

[0040] Figure 8 This is a schematic diagram of the auxiliary pressing mechanism in use from an overhead view.

[0041] Figure 9 This is a schematic diagram illustrating the principle of flipping and folding the sleeve gussets and inserting them into the seams of the garment pieces.

[0042] Figure 10 This is a schematic diagram showing the extension of the displacement cylinder during the operation of the auxiliary pressing mechanism.

[0043] Figure 11 This is a schematic diagram showing how a sword-shaped positioning plate and a pressure plate are used to hold down the sleeve fork fabric piece.

[0044] Figure 12 This is a schematic diagram of the auxiliary pressing mechanism.

[0045] Figure 13 This is a schematic diagram of a negative pressure fixing scheme. Detailed Implementation

[0046] The following will refer to the appendices in the embodiments of the present invention. Figure 1-13 The technical solutions in the embodiments of the present invention are clearly and completely described herein. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0047] like Figure 10-13 As shown, a method for folding sleeve gussets is proposed, which adds an auxiliary pressing scheme compared to the applicant's previous patent application (Chinese patent application document with publication number CN117265788A).

[0048] The assisted pressure method includes the following steps:

[0049] S1. Preparation steps for assisted pressing, such as... Figure 10As shown, the piston rod of the displacement cylinder 1 is used to push the main movable seat 2 to the operating position of the positioning table 18, so that the rotary motor 3, the upper pressure block 4, the push cylinder 5 and the push plate 6 are all on the positioning table 18.

[0050] S2, Pressing down step, as follows Figure 11 As shown, the sword-shaped positioning plate 16 and the pressure plate 17 are extended by their respective driving units and then press down on the sleeve fork piece 10, so that the sword-shaped positioning plate 16 presses flat on the sword-shaped part of the sleeve fork piece 10 and the pressure plate 17 presses down on the other part of the sleeve fork piece 10.

[0051] S3, Assisted pressing action steps, such as Figure 12 As shown, the rotary motor 3 drives the upper pressure block 4 to rotate downward until the upper pressure block 4 presses down on the sword-shaped positioning plate 16. Then, the push cylinder 5 pushes the push plate 6 towards the front end of the pressure plate 17, so that the folding part 10e (also called the ear piece) folds from bottom to top until the push plate 6 presses the folding part 10e onto the upper plate surface of the pressure plate 17, so that the folding part 10e is completely folded upward and inward. In this step, all the folding plates are driven by the drive unit to perform folding operations on the sleeve fork cutting piece 10.

[0052] S4, Retraction Step: The pusher cylinder 5 pulls the push plate 6 back, the rotary motor 3 drives the upper pressure block 4 to rotate upwards, releasing the sword-shaped positioning plate 16. Then, the retraction action of the piston rod of the displacement cylinder 1 moves the main movable seat 2 away from the positioning table 18 (e.g., ...). Figure 2 (as shown);

[0053] S5. Flipping and folding step, which is the same as the scheme disclosed in Chinese patent application document with publication number CN117265788A, such as... Figure 6 , 9 As shown, the flipping frame 19 is driven upward by the drive unit, causing the movable part of the positioning table 18 to flip up 90°, bending the sword-shaped part of the sleeve fork piece 10 upward by 90°, as shown. Figure 6 In the third form, the sleeve gusset piece 10 can be divided into a first part 10f (which is a sword-shaped part, including the second fold 10b, the third fold 10c, and the fourth fold 10d) and a second part 10g (including the folded part 10e and the first fold 10a). The folded part 10e is located on one of the short sides of the second part 10g and is on the same side as the apex of the sword-shaped first part 10f. The first part 10f and the second part 10g are perpendicular to each other. The gusset 21 of the garment piece 20 is aligned and the sword-shaped part of the sleeve gusset piece 10 is inserted. Then the sleeve gusset piece 10 is folded again to form a folded effect, thus finally forming the sword-shaped sleeve gusset 11 that clamps the garment piece 20.

[0054] During the folding of the sleeve placket, such as Figure 13As shown, the sleeve fork piece 10 is fixed to the upper surface of the positioning platform 18 by a known negative pressure adsorption method. That is, several air holes are opened on the positioning platform 18 and connected to the negative pressure generating device through pipes. The sleeve fork piece 10 is adsorbed and fixed to the upper surface of the positioning platform 18 by suction. This is one of the conditions for the technical improvement of the present invention.

[0055] To achieve the above method, such as Figure 1-9 As shown, a device for folding sleeve gussets is proposed, comprising:

[0056] Positioning platform 18 supports sleeve fork fabric piece 10 when the sleeve fork is folded;

[0057] Several folding plates are movable on the positioning stage 18. Each folding plate is driven by its driving unit to perform a folding action. Folding plates are mentioned in the prior art and are briefly described here. The folding plates are divided into folding plate one 12, folding plate two 13, folding plate three 14, and folding plate four 15. Figure 4 , 6 As shown, folding plate 12, folding plate 23, folding plate 34, and folding plate 45 are used for the folding operations of the first folding edge 10a, the second folding edge 10b, the third folding edge 10c, and the fourth folding edge 10d, respectively.

[0058] The strip-shaped sword-shaped positioning plate 16 for shaping is driven by the driving unit to flatten the sword-shaped part of the sleeve fork cut piece 10. The sword-shaped positioning plate 16 is equivalent to a folding template, which facilitates the folding and forming of the sleeve fork. The second fold 10b, the third fold 10c, and the fourth fold 10d are all formed by bending relative to one long side, one apex corner, and the other apex corner of the sword-shaped positioning plate 16. The bending direction is upward and inward.

[0059] The flip frame 19 is equipped with a flip drive unit for folding the sleeves as a whole. The sword-shaped positioning plate 16 is horizontally slidably disposed in the flip frame 19, and a corresponding cylinder is disposed in the flip frame 19 to drive the sword-shaped positioning plate 16 to move.

[0060] The components of the aforementioned equipment have been described in detail in the prior art. In order to save space, this invention has made some omissions and appropriate summaries, and describes the technical solutions related to the improvement solution.

[0061] As an improvement to the present invention, the device further includes an auxiliary pressing mechanism, which comprises:

[0062] The main movable seat 2 is horizontally movable and moves to the operating position of the positioning table 18 when the sleeve is folded;

[0063] The first assembly, consisting of a rotary motor 3 and an upper pressure block 4, is as follows: Figure 1 , 4As shown, the rotary motor 3 is mounted on the main movable seat 2, and the rotary output end of the rotary motor 3 is fixedly connected to the upper pressure block 4. During the folding of the sleeve fork, the rotary motor 3 drives the upper pressure block 4 to rotate downward to press against the sword-shaped positioning plate 16, so as to make the position of the sword-shaped positioning plate 16 more stable.

[0064] The second assembly, consisting of the push cylinder 5 and the pusher plate 6, is as follows: Figure 1 , 4 As shown, the push cylinder 5 is mounted on the main movable seat 2. The push cylinder 5 is used for linear output in the horizontal direction. Its output end is fixedly connected to the push plate 6. During the sleeve folding process, the push plate 6 first supports the folded part 10e of the sleeve fold piece 10. Under the horizontal push of the push cylinder 5, the push plate 6 pushes forward, causing the folded part 10e to fold upward, thereby folding the folded part 10e. The push plate 6 then presses down on the folded part 10e (as shown). Figure 5 (As shown).

[0065] In addition, the aforementioned auxiliary pressing mechanism also includes:

[0066] Fixed base frame 9;

[0067] The horizontally arranged displacement cylinder 1 is perpendicular to the length direction of the sword-shaped positioning plate 16. The cylinder barrel of the displacement cylinder 1 is fixedly connected to the fixed base frame 9, and the main movable seat 2 is fixedly connected to the piston rod of the displacement cylinder 1 and moves horizontally with the fixed base frame 9.

[0068] In order to guide the movement trajectory of the main movable seat 2, the auxiliary pressing mechanism also includes a slide rail 7 and a guide block 8. The slide rail 7 is parallel to the displacement cylinder 1 and is fixedly connected to the main movable seat 2. The guide block 8 is fixedly connected to the fixed base frame 9. The guide block 8 has a guide groove that is parallel to the slide rail 7 and slides with the slide rail 7.

[0069] To facilitate the folding action of the pusher plate 6, the device also includes a strip-shaped pressure plate 17 and a displacement mechanism. The pressure plate 17 is parallel to the sword-shaped positioning plate 16. The displacement mechanism has degrees of freedom of movement in the up and down and horizontal directions. Driven by the displacement mechanism, the pressure plate 17 presses down on the sleeve fork fabric piece 10 during the folding process and cooperates with the pusher plate 6 to fold the folding part 10e.

[0070] The first fold 10a is formed by bending upward and inward relative to the long side of the pressure plate 17.

[0071] In the description of this invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention. In this invention, it should also be noted that the terms "installation" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, an integrally formed connection, a mechanical connection, or an indirect connection through intermediate connecting parts. The specific meaning of the terms in this utility model can be understood according to the specific circumstances.

[0072] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the invention can be implemented in other specific forms without departing from its spirit or essential characteristics. Therefore, the embodiments should be considered illustrative and non-limiting in all respects, and the scope of the invention is defined by the appended claims rather than the foregoing description. Thus, all variations falling within the meaning and scope of equivalents of the claims are intended to be included within the present invention, and no reference numerals in the claims should be construed as limiting the scope of the claims.

[0073] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A device for folding sleeve braces, comprising: Positioning platform (18) supports sleeve fork piece (10) when the sleeve fork is folded. The sleeve fork piece (10) is divided into a first part (10f) and a second part (10g). The first part (10f) is a sword-shaped part, including a second fold (10b), a third fold (10c), and a fourth fold (10d). The second part (10g) includes a fold (10e) and a first fold (10a). The fold (10e) is located on one of the short sides of the second part (10g) and is on the same side as the apex of the sword-shaped first part (10f). Several folding plates are set on the positioning table (18), each folding plate is driven by its driving unit for folding operations of the first fold (10a), second fold (10b), third fold (10c) and fourth fold (10d) of the sleeve fork fabric piece (10); A strip-shaped, sword-shaped positioning plate (16) for shaping, which is driven by a drive unit to flatten the sword-shaped portion of the sleeve fork piece (10); The flip frame (19) is equipped with a flip drive unit for driving the sleeve fork to fold as a whole. The sword-shaped positioning plate (16) is horizontally slidably set inside the flip frame (19). A corresponding cylinder is set inside the flip frame (19) to drive the sword-shaped positioning plate (16) to move. The feature is that it further includes an auxiliary pressing mechanism, the auxiliary pressing mechanism comprising: The main movable seat (2) is horizontally movable and moves to the operating position of the positioning platform (18) when the sleeve fork is folded; The first assembly consists of a rotary motor (3) and an upper pressure block (4). The rotary motor (3) is mounted on the main movable seat (2). The rotary output end of the rotary motor (3) is fixedly connected to the upper pressure block (4). During the folding of the sleeve fork, the rotary motor (3) drives the upper pressure block (4) to rotate downward to press against the sword-shaped positioning plate (16). The second assembly consists of a push cylinder (5) and a push plate (6). The push cylinder (5) is mounted on the main movable seat (2). The push cylinder (5) is used for linear output in the horizontal direction. Its output end is fixedly connected to the push plate (6). During the folding process of the sleeve fork, the push plate (6) supports the folded part (10e) of the sleeve fork cut piece (10) and folds the folded part (10e) under the horizontal push of the push cylinder (5). Fixed base frame (9); A horizontally arranged displacement cylinder (1) has its cylinder barrel fixedly connected to a fixed base frame (9). The main movable seat (2) is fixedly connected to the piston rod of the displacement cylinder (1) and is horizontally movable in cooperation with the fixed base frame (9). The slide rail (7) and guide block (8) are parallel to the displacement cylinder (1) and fixedly connected to the main movable seat (2). The guide block (8) is fixedly connected to the fixed base frame (9). The guide block (8) has a guide groove that is parallel to the slide rail (7) and slides with the slide rail (7). The device also includes a pressure plate (17) and a displacement mechanism. The displacement mechanism has degrees of freedom of movement in the up and down and horizontal directions. The sword-shaped positioning plate (16) presses the sword-shaped part of the sleeve fork piece (10). Under the drive of the displacement mechanism, the pressure plate (17) presses the second part (10g) of the sleeve fork piece (10) during the folding process and cooperates with the push plate (6) to fold the folding part (10e).

2. The device for folding sleeve gussets according to claim 1, characterized in that, The displacement cylinder (1) is perpendicular to the length direction of the sword-shaped positioning plate (16).

3. A method for folding sleeve gussets using the device for folding sleeve gussets according to claim 1, comprising a flipping folding step in which the flipping frame (19) is driven upward by the drive unit to flip the movable part of the positioning platform (18) upward by 90°, bending the sword-shaped part of the sleeve gusset piece (10) upward by 90°, aligning and inserting the gusset seam (21) of the garment piece (20) with the sword-shaped part of the sleeve gusset piece (10), and then continuing to fold the sleeve gusset piece (10) to form a sword-shaped sleeve gusset (11) that clamps the garment piece (20), characterized in that: The method also includes the following steps in sequence: S1. Assisted pressing preparation step: Use the piston rod of the displacement cylinder (1) to push the main movable seat (2) to the operating position of the positioning table (18), so that the rotary motor (3), upper pressure block (4), push cylinder (5) and push plate (6) are all on the positioning table (18); S2, Pressing down step, the sword-shaped positioning plate (16) and the pressure plate (17) are extended by their respective driving units and then the sleeve fork piece (10) is pressed down, so that the sword-shaped positioning plate (16) presses flat on the sword-shaped part of the sleeve fork piece (10) and the pressure plate (17) presses down on the second part (10g) of the sleeve fork piece (10). S3, Assisted pressing action steps: The rotary motor (3) drives the upper pressure block (4) to rotate downward until the upper pressure block (4) presses the sword-shaped positioning plate (16). Then, the push cylinder (5) pushes the push plate (6) towards the front end of the pressure plate (17) so that the folding part (10e) folds from bottom to top until the push plate (6) presses the folding part (10e) on the upper plate surface of the pressure plate (17) so that the folding part (10e) is completely folded upward and inward. In this step, all the folding plates are driven by the drive unit to perform folding operations on the sleeve fork cutting piece (10). S4, retraction step: use the push cylinder (5) to pull back the push plate (6), the rotary motor (3) drives the upper pressure block (4) to rotate upward, release the sword-shaped positioning plate (16), and then use the retraction action of the piston rod of the displacement cylinder (1) to take the main movable seat (2) away from the positioning table (18). After step S4 is completed, perform the above flipping and folding steps.

4. A method for folding sleeve gussets according to claim 3, characterized in that, During the folding process of the sleeve fork, the sleeve fork piece (10) is fixed to the upper surface of the positioning table (18) by using negative pressure adsorption.

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