An auxiliary device for tongue trim stitching and a stitching method

Abstract

This invention relates to the field of shoemaking machinery, specifically an auxiliary device and sewing method for sewing decorative parts on shoe tongues. It includes at least a base plate for connection to a pattern sewing machine, with grooves on the base plate for aligning with the sewing area of ​​the pattern sewing machine. The invention is characterized by further including: a material sheet, a decorative sheet, and a sliding guide rail. Using this auxiliary device to sew decorative parts onto the shoe tongue not only improves the yield rate of the sewing but also enhances the comfort and aesthetics of the instep.

Description

Technical Field

[0001] This invention relates to the field of shoemaking machinery, and in particular to an auxiliary device and sewing method for sewing decorative parts for shoe tongues. Background Technology

[0002] With increasing demands for footwear comfort, and in order to better enhance the comfort and aesthetics of the instep while also protecting it, some boots have added various soft decorative elements to the tongue area to protect and improve instep comfort.

[0003] In the production process, the traditional stitching process between decorative parts and shoe tongue requires an adhesive applicator to apply adhesive to the decorative parts and first attach them to the instep area of ​​the shoe tongue, and then sew around the edges to fix the decorative parts to the shoe tongue.

[0004] However, decorative parts sewn and fixed using this method require applying glue before bonding, resulting in a somewhat stiff material after bonding. This affects the comfort of the instep when wearing the shoes. For footwear products, even slight differences in comfort can greatly impact the user experience and thus product sales. Moreover, it is difficult for workers on the assembly line to consistently maintain a uniform amount of glue used. Using too much glue further reduces the product's comfort, while using too little glue results in the decorative parts not being bonded to the tongue. During further sewing, the decorative parts may shift, leading to product defects and increasing the scrap rate. Summary of the Invention

[0005] The purpose of this invention is to provide an auxiliary device and sewing method for sewing decorative parts on shoe tongues. The decorative parts sewn on the shoe tongue using this auxiliary device can not only improve the yield rate of sewing, but also improve the comfort and aesthetics of the instep.

[0006] The technical solution adopted by this invention to solve its technical problem is: an auxiliary device for sewing decorative parts for shoe tongues, comprising at least a base plate for connecting to a pattern sewing machine, wherein the base plate has a base plate groove for aligning the sewing range of the pattern sewing machine, characterized in that it further comprises:

[0007] A material sheet is set on the upper surface of the sole plate, and the material sheet has at least a first material frame that matches the size of the shoe tongue;

[0008] A decorative panel is disposed on the upper surface of a fabric panel. The decorative panel includes at least an upper decorative panel and a lower decorative panel that are movable or detachably connected to each other. The lower decorative panel has at least a second fabric frame for aligning with the sewing range of the pattern machine.

[0009] A sliding guide rail is provided on the lower trim panel. The sliding guide rail includes at least a sliding track and a sliding cover plate. There are two sliding tracks respectively located on two opposite sides of the second trim frame. The two ends of the sliding cover plate are slidably connected to the two sliding tracks. The sliding cover plate has a cover plate groove, the length of which at least covers the maximum height of the second trim frame.

[0010] The aforementioned pattern machine is a programmable electronic pattern machine.

[0011] The base plate has a base plate positioning hole on its upper edge for positioning with the pattern making machine, the material plate has a material plate positioning hole on its upper edge for positioning with the pattern making machine, and the decorative plate has a decorative plate positioning hole on its upper edge for positioning with the pattern making machine. The base plate positioning hole, the material plate positioning hole, and the decorative plate positioning hole have the same shape and are in the same position.

[0012] The base plate has a base plate connecting groove for fixing with the pattern making machine, the material plate has a material plate connecting groove for fixing with the pattern making machine, and the decorative plate has a decorative plate connecting groove for fixing with the pattern making machine. The base plate connecting groove, the material plate connecting groove and the decorative plate connecting groove have the same shape and are in the same position.

[0013] The base plate, sheet plate, and decorative sheet are all made of PVC insulating board. The sheet plate is glued to the base plate, and the upper decorative sheet is glued to the sheet plate.

[0014] The upper and lower trim panels are rotatably connected by hinges or detachably connected by magnetic attraction along the contact edge.

[0015] The thickness of the lower trim panel is the same as the thickness of the decorative part, and the outline size of the second material frame opened on the lower trim panel is the same as the outline size of the decorative part.

[0016] The lower trim panel has two sets of upper and lower sliding track first positioning holes. There are two sliding tracks, one upper and one lower, and each track has a sliding track second positioning hole that matches the position of the first positioning hole. The upper and lower sliding tracks are positioned and fixed on the lower trim panel through the matching positioning holes.

[0017] The distance between the sliding cover plate and the lower trim plate is no more than 0.5 mm, the distance from the cover plate groove to the sliding edge of the sliding cover plate is no more than 2.5 cm, and the sliding edge of the sliding cover plate has a pushing mechanism that can push the trim piece flat.

[0018] A method for sewing a shoe tongue decorative piece, comprising at least the aforementioned auxiliary device for sewing the shoe tongue decorative piece, characterized in that:

[0019] Step 1: Connect the base plate to the pattern making machine;

[0020] Step 2: Lift or remove the trim panel and place the shoe tongue into the first panel frame that matches the size of the shoe tongue;

[0021] Step 3: If the lower trim panel and the upper trim panel are detachably connected, connect the lower trim panel and the upper trim panel, and then press down the lower trim panel. If the lower trim panel and the upper trim panel are movably connected, then press down the lower trim panel directly.

[0022] Step 4: Place the decorative piece into the second sheet frame;

[0023] Step 5: Insert the sewing needle of the pattern sewing machine into the groove of the cover plate;

[0024] Step 6: Start the pattern sewing machine. The pattern sewing machine will sew the decorative parts and the shoe tongue in sequence along the sliding direction of the sliding cover.

[0025] The beneficial effects of this invention are as follows: The auxiliary device and sewing method for sewing shoe tongue decorative parts involve fixing the base plate to the pattern sewing machine, securing the shoe tongue with a material plate on the base plate, and then initially fixing the position of the decorative part with a decorative plate on the material plate. During the pattern sewing process, the sewing is performed sequentially along the sliding direction of the sliding cover plate. Because the sewing needle of the pattern sewing machine penetrates into the groove of the cover plate, the sewing needle drives the sliding cover plate to slide along the sewing method. During this sliding process, the unsewn parts of the shoe tongue and decorative part are pushed by the edge of the sliding cover plate, thus preventing the decorative part from shifting or wrinkling, ensuring the flatness of the shoe tongue and decorative part during the sewing process. Using this auxiliary device for sewing eliminates the need for adhesive bonding of the decorative part, improving the comfort and aesthetics of the instep while saving adhesive. Furthermore, it optimizes the process by combining the two processes of applying adhesive and sewing the shoe tongue decorative part into one, ensuring consistent product quality, improving the yield rate, saving a glue-applying worker, and meeting the requirements of the national occupational health system. Attached Figure Description

[0026] The invention will be further described below with reference to the accompanying drawings.

[0027] Figure 1 The auxiliary device for sewing the decorative part of the shoe tongue is shown in the assembly drawing;

[0028] Figure 2 This is a structural diagram of the base plate;

[0029] Figure 3 This is a schematic diagram of the material sheet structure;

[0030] Figure 4 This is a structural diagram of the decorative panel;

[0031] Figure 5 This is a schematic diagram of the sliding guide rail structure;

[0032] In the diagram: 1. Base plate; 2. Material sheet; 3. Decorative sheet; 4. Sliding guide rail;

[0033] 101. Base plate positioning hole; 102. Base plate connecting groove; 103. Base plate wire groove;

[0034] 201. Sheet positioning hole; 202. Sheet connecting groove; 203. First sheet frame;

[0035] 301. Trim panel positioning hole; 302. Trim panel connecting groove; 303. Upper trim panel; 304. Lower trim panel; 305. Hinge; 306. First positioning hole of sliding track; 307. Second material frame;

[0036] 401. Second positioning hole of sliding track; 402. Sliding track; 403. Sliding cover plate; 404. Cover plate groove; 405. Cover plate roller. Detailed Implementation

[0037] Example 1

[0038] like Figure 1 The auxiliary device for sewing the shoe tongue decorative part is shown in the assembly drawing. It provides an auxiliary device for sewing shoe tongue decorative parts, including at least a base plate 1 for connection to a pattern sewing machine. The base plate 1 has a base plate groove 103 for aligning the sewing range of the pattern sewing machine. It also includes:

[0039] Material plate 2 is set on the upper surface of the base plate 1. The material plate 2 has at least a first material frame 203 that matches the size of the shoe tongue. The function of the material plate 2 is to fix the shoe tongue and prevent it from shifting. Therefore, the outline of the shoe tongue is the same size as the first material frame 203.

[0040] Decorative panel 3 is disposed on the upper surface of material panel 2. Decorative panel 3 includes at least an upper decorative panel 303 and a lower decorative panel 304 that are movably or detachably connected to each other. The lower decorative panel 304 has at least a second material frame 307 for aligning the sewing range of the pattern machine.

[0041] A sliding guide rail 4 is disposed on the lower trim panel 304. The sliding guide rail 4 includes at least a sliding track 402 and a sliding cover plate 403. Two sliding tracks 402 are respectively disposed on opposite sides of the second trim frame 307. The two ends of the sliding cover plate 403 are slidably connected to the two sliding tracks 402. A cover plate groove 404 is formed on the sliding cover plate 403. The length of the cover plate groove 404 at least covers the maximum height of the second trim frame 307. Thus, when the sliding cover plate 403 slides from the initial position to the final position, the coverage area generated by the movement of the cover plate groove 404 can completely cover the second trim frame 307. (See also...) Figure 1In this embodiment, there are two sliding tracks 402, one upper and one lower. The second sheet frame 307 is located between the two sliding tracks 402. The sliding cover plate 403 can slide from left to right. The cover plate groove 404 is arranged vertically. The length of the cover plate groove 404 is the vertical height shown in the figure. This height is greater than the maximum height of the second sheet frame 307, which means that the length of the cover plate groove 404 at least covers the maximum height of the second sheet frame 307. At the same time, the sliding range of the sliding cover plate 403 is such that when it is in the initial sliding position, the cover plate groove 404 is located on one side of the second sheet frame 307, and when it is in the final sliding position, the cover plate groove 404 is located on the other side of the second sheet frame 307. See [reference needed]. Figure 1 In this embodiment, when the sliding cover plate 403 is in the initial sliding position, the cover plate groove 404 is on the left side of the second material frame 307. When the sliding cover plate 403 is in the final sliding position, the cover plate groove 404 should be on the right side of the second material frame 307.

[0042] A method for sewing a shoe tongue decorative piece, comprising at least the aforementioned auxiliary device for sewing shoe tongue decorative pieces, including the following steps:

[0043] Step 1: Securely connect the base plate 1 to the pattern making machine;

[0044] Step 2: Lift or remove the decorative panel 304 and place the shoe tongue into the first material frame 203 that matches the size of the shoe tongue;

[0045] Step 3: If the lower trim panel 304 and the upper trim panel 303 are detachably connected, then connect the lower trim panel 304 and the upper trim panel 303, and press down the lower trim panel 304 after connection. If the lower trim panel 304 and the upper trim panel 303 are movably connected, then press down the lower trim panel 304 directly.

[0046] Step 4: Place the decorative piece into the second sheet frame 307;

[0047] Step 5: Insert the sewing needle of the pattern sewing machine into the cover plate groove 404;

[0048] Step 6: Start the pattern sewing machine. The pattern sewing machine will sew the decorative parts and the shoe tongue in sequence along the sliding direction of the sliding cover plate 403.

[0049] This auxiliary device and sewing method for sewing decorative parts on shoe tongues involves fixing the base plate 1 to the pattern sewing machine, securing the shoe tongue with the material plate 2 on the base plate 1, and then initially fixing the position of the decorative part with the decorative plate 3 on the material plate 2. During the sewing process of the pattern sewing machine, the sewing is performed sequentially along the sliding direction of the sliding cover plate 403. During the sewing process, because the sewing needle of the pattern sewing machine penetrates into the thread groove 404 of the cover plate, the sewing needle will drive the sliding cover plate 403 to slide along the sewing method. During the sliding process, the unsewn parts of the shoe tongue and decorative part are separated. The sliding cover 403 pushes the decorative parts away from shifting or wrinkling, ensuring the flatness of the tongue and decorative parts during sewing. With this auxiliary device, the decorative parts do not need to be glued, which not only improves the comfort and aesthetics of the instep but also saves glue. At the same time, it optimizes the process by combining the two processes of gluing and sewing the tongue decorative parts into one process, ensuring consistent product quality, improving the yield rate, saving a gluing worker, and meeting the requirements of the national occupational health system.

[0050] Example 2

[0051] In this embodiment, the pattern maker is a programmable electronic pattern maker.

[0052] like Figure 2 As shown, the base plate 1 has a base plate positioning hole 101 along its upper edge for positioning with the pattern making machine, as follows: Figure 3 As shown, the upper edge of the material plate 2 has a material plate positioning hole 201 for positioning with the pattern making machine, as follows: Figure 4 As shown, the decorative plate 3 has a decorative plate positioning hole 301 along its upper edge for positioning with the pattern making machine. The base plate positioning hole 101, the material plate positioning hole 201, and the decorative plate positioning hole 301 have the same shape and are in the same position. The base plate 1 has a base plate connecting groove 102 for fixing with the pattern making machine. The material plate 2 has a material plate connecting groove 202 for fixing with the pattern making machine. The decorative plate 3 has a decorative plate connecting groove 303 for fixing with the pattern making machine. The base plate connecting groove 102, the material plate connecting groove 202, and the decorative plate connecting groove 303 have the same shape and are in the same position. In this embodiment, each connecting groove is a 52mm×21mm slot.

[0053] The base plate 1, the sheet plate 2, and the decorative sheet plate 3 are all made of PVC yellow insulating board. The sheet plate 2 is glued to the base plate 1, and the upper decorative sheet plate 303 of the decorative sheet plate 3 is glued to the sheet plate 2.

[0054] Example 3

[0055] like Figure 4As shown, in this embodiment, based on embodiment 1, the upper decorative plate 303 and the lower decorative plate 304 are rotatably connected by a hinge 305. In the process of sewing the shoe tongue decoration, in step 2, the lower decorative plate 304 is lifted directly by the hinge 305, and the shoe tongue is placed into the first material frame 203 that matches the size of the shoe tongue. In step 3, the lower decorative plate 304 is pressed down directly to complete the fixation of the shoe tongue and proceed to the subsequent steps. In addition to the form of rotatable connection by the hinge 305 given in this embodiment, any structure in which the lower decorative plate 304 and the upper decorative plate 303 are movably connected is acceptable as long as the shoe tongue can be pressed into the first material frame 203 by the lower decorative plate 304.

[0056] Example 4

[0057] Based on Embodiment 1, in this embodiment, the upper decorative panel 303 and the lower decorative panel 304 are detachably connected by magnetic attraction along their contact edges. During the sewing process of the shoe tongue decoration, in step 2, the lower decorative panel 304 is directly removed, and the shoe tongue is placed into the first material frame 203, which matches the size of the shoe tongue. In step 3, the upper edge of the lower decorative panel 304 is magnetically connected to the lower edge of the upper decorative panel 303. After connection, the lower decorative panel 304 presses onto the material panel 2 and the first material frame 203, thus completing the fixation of the shoe tongue for subsequent steps. Besides the detachable magnetic connection method given in this embodiment, any structure that allows the shoe tongue to be pressed into the first material frame 203 via the lower decorative panel 304 is acceptable, as long as it enables the shoe tongue to be detachably connected.

[0058] Example 5

[0059] like Figure 5 As shown, the lower trim panel 304 has two sets of upper and lower sliding track first positioning holes 306. The sliding guide rail 4 consists of two upper and lower rails, each with a sliding track second positioning hole 401 that matches the position of the sliding track first positioning hole 306. The upper and lower sliding guide rails 4 are positioned and fixed on the lower trim panel 304 through the matching positioning holes.

[0060] The distance between the sliding cover plate 403 and the lower decorative plate 304 is no more than 0.5 mm, and the thickness of the lower decorative plate 304 is related to the thickness of the decorative part to be sewn onto the shoe tongue. That is, the thickness of the lower decorative plate 304 is the same as the thickness of the decorative part. The outline size of the second material frame 307 opened on the lower decorative plate 304 is the same as the outline size of the decorative part. According to the shape of the decorative part to be sewn on different production lines, lower decorative plates 304 with different thicknesses can be customized, and a second material frame 307 with the same outline size can be opened on the lower decorative plate 304 according to the shape of the decorative part. The sewing needs of decorative parts with different shapes and outlines can be met without the need for overall customization of sewing auxiliary devices.

[0061] Example 6

[0062] In this embodiment, the distance from the cover plate groove 404 to the sliding edge of the sliding cover plate 403 is no more than 2.5 cm, and preferably 2 cm. The sliding edge of the sliding cover plate 403 has a pushing mechanism capable of flattening the decorative piece. In this embodiment, the pushing mechanism is a set of cover plate rollers 405 fixed at the sliding edge of the sliding cover plate 403. Figure 5 As shown, the two ends of the cover plate roller 405 are rotatably connected to the upper and lower ends of the sliding cover plate 403, respectively. During the sliding of the sliding cover plate 403 to the right, the cover plate roller 405 located at its edge rotates and rolls the decorative part through the cover plate roller 405, thereby pushing the decorative part to flatten it and ensuring that the decorative part is flatly embedded in the second material frame 307, avoiding the displacement or wrinkles of the decorative part during the sewing process.

Claims

1. An auxiliary device for tongue trim stitching, comprising at least a base plate (1) for connecting with a pattern machine, a base plate line groove (103) is opened on the base plate (1) for aligning the stitching range of the pattern machine, characterized in that, Also includes: A material plate (2) is set on the upper surface of the base plate (1), and the material plate (2) has at least a first material frame (203) that matches the size of the shoe tongue. Decorative panel (3) is disposed on the upper surface of material panel (2). Decorative panel (3) includes at least an upper decorative panel (303) and a lower decorative panel (304) that are movable or detachably connected to each other. The lower decorative panel (304) has at least a second material frame (307) for aligning the sewing range of the pattern machine. A sliding guide rail (4) is provided on the lower trim panel (304). The sliding guide rail (4) includes at least a sliding track (402) and a sliding cover plate (403). There are two sliding tracks (402), which are respectively provided on two opposite sides of the second trim panel (307). The two ends of the sliding cover plate (403) are slidably connected to the two sliding tracks (402). A cover plate groove (404) is provided on the sliding cover plate (403). The length of the cover plate groove (404) is at least enough to cover the maximum height of the second trim panel (307). The base plate (1) has a base plate positioning hole (101) for positioning with the pattern making machine along its upper edge, the material plate (2) has a material plate positioning hole (201) for positioning with the pattern making machine along its upper edge, and the decorative plate (3) has a decorative plate positioning hole (301) for positioning with the pattern making machine along its upper edge. The base plate positioning hole (101), the material plate positioning hole (201) and the decorative plate positioning hole (301) have the same shape and are in the same position. The base plate (1) has a base plate connecting groove (102) for fixing with the pattern making machine, the material plate (2) has a material plate connecting groove (202) for fixing with the pattern making machine, and the decorative plate (3) has a decorative plate connecting groove (302) for fixing with the pattern making machine. The base plate connecting groove (102), the material plate connecting groove (202) and the decorative plate connecting groove (302) have the same shape and are in the same position. The lower trim panel (304) has two sets of upper and lower sliding track first positioning holes (306). The sliding guide rail (4) consists of two upper and lower rails, each with a sliding track second positioning hole (401) that matches the position of the sliding track first positioning hole (306). The upper and lower sliding guide rails (4) are positioned and fixed on the lower trim panel (304) through the matching positioning holes.

2. The device for assisting in the sewing of a tongue trim according to claim 1, characterized in that: The aforementioned pattern machine is a programmable electronic pattern machine.

3. The device for assisting in the sewing of a tongue trim according to claim 1, wherein: The base plate (1), the sheet plate (2) and the decorative plate (3) are all made of PVC insulating board. The sheet plate (2) is bonded to the base plate (1), and the upper decorative plate (303) of the decorative plate (3) is bonded to the sheet plate (2).

4. An auxiliary device for sewing decorative parts for shoe tongues according to claim 1 or 3, characterized in that: The upper trim panel (303) and the lower trim panel (304) are rotatably connected by a hinge (305) or the upper trim panel (303) and the lower trim panel (304) are detachably connected by magnetic attraction along the contact edge.

5. An auxiliary device for sewing decorative parts for shoe tongues according to claim 1, characterized in that: The thickness of the lower trim panel (304) is the same as the thickness of the decorative part, and the outline size of the second material frame (307) opened on the lower trim panel (304) is the same as the outline size of the decorative part.

6. The auxiliary device for sewing decorative parts for shoe tongues according to claim 1, characterized in that: The distance between the sliding cover plate (403) and the lower trim plate (304) is no more than 0.5 mm, the distance from the cover plate groove (404) to the sliding edge of the sliding cover plate (403) is no more than 2.5 cm, and the sliding edge of the sliding cover plate (403) has a pushing mechanism that can push the trim piece flat.

7. A method for sewing a shoe tongue decorative piece, comprising at least the auxiliary device for sewing a shoe tongue decorative piece as described in claim 1, characterized in that: Step 1: Connect the base plate (1) to the pattern making machine; Step 2: Lift or remove the trim panel (304) and place the shoe tongue into the first material frame (203) that matches the size of the shoe tongue; Step 3: If the lower trim panel (304) and the upper trim panel (303) are detachably connected, then connect the lower trim panel (304) and the upper trim panel (303), and press down the lower trim panel (304) after connection. If the lower trim panel (304) and the upper trim panel (303) are movably connected, then press down the lower trim panel (304) directly. Step 4: Place the decorative piece into the second sheet frame (307); Step 5: Insert the sewing needle of the pattern sewing machine into the cover plate groove (404); Step 6: Start the pattern sewing machine. The pattern sewing machine will sew the decorative parts and the shoe tongue in sequence along the sliding direction of the sliding cover plate (403).

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