Automatic positioning sewing device adapting to vamp change

Abstract

The invention discloses an automatic positioning sewing device adapting to vamp changes, and relates to the technical field of leather shoe processing, the automatic positioning sewing device comprises a platform and an automatic sewing machine, the automatic sewing machine is installed at the top end of the platform, a transmission block is installed on a sliding rail of the automatic sewing machine, and a vamp positioning mechanism is arranged on one side of the transmission block; the vamp positioning mechanism comprises a positioning frame, a positioning insertion plate, a vamp cloth liner and a positioning turning plate, according to the automatic positioning sewing device adapting to the vamp change, the vamp positioning mechanism is arranged, leather vamps in a plane state can be quickly positioned in the positioning frame, the positioning frame is controlled by the automatic sewing machine to move, and the leather vamps can be quickly positioned in the positioning frame; automatic sewing is carried out by matching with a sewing part of an automatic sewing machine, the leather vamp only needs to be placed on the vamp cloth liner of the positioning insertion plate, can be covered and positioned by turning over through the hinged positioning turning plate and can be installed by inserting the positioning frame, and the specific vamp cloth liner and the sewing groove are matched with the shape of the current leather vamp.

Description

Technical Field

[0001] The invention relates to the technical field of leather shoe processing, in particular to an automatic positioning sewing device adapting to changes in shoe uppers. Background Art

[0002] Leather is animal skin that has been denatured and not easy to rot after physical and chemical processes such as dehairing and tanning. Leather is composed of natural protein fibers tightly woven in three-dimensional space. Its surface has a special grain layer with natural grain and luster and feels comfortable.

[0003] Leather shoes are footwear products made of leather. When making shoes, leather and other materials need to be sewn together, but the existing sewing operations are mostly done manually, with the leather fabric held in hand and sewing with a sewing machine. The process is very dependent on the proficiency and skills of the operator. Since the leather fabric is held in hand for sewing, there is a large degree of arbitrariness, and the production efficiency is low due to the difficulty of processing and proficiency. In addition, due to individual differences in the positioning of the leather fabric, the same batch of shoes is prone to slight differences in sewing. Moreover, during sewing, most of the leather fabrics need to be flattened for sewing, so the upper is not in the state when it is worn when sewing. In this way, the sewing line sometimes does not conform to the curve of the wearing state, resulting in reduced wearing comfort. Summary of the invention

[0004] The object of the present invention is to provide an automatic positioning sewing device that can adapt to the changes in the upper of a shoe, so as to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an automatic positioning sewing device that adapts to changes in shoe uppers, comprising a platform and an automatic sewing machine, the automatic sewing machine being installed on the top of the platform, a transmission block being installed on the slide rail of the automatic sewing machine, a shoe upper positioning mechanism being provided on one side of the transmission block, the shoe upper positioning mechanism comprising a positioning frame, a positioning plug plate, a shoe upper pad and a positioning flap, a through groove being provided in the middle of the platform, an adaptive positioning mechanism being provided at the bottom of the through groove, the adaptive positioning mechanism comprising two positioning sleeves, a material storage barrel and a lifting plate, a rectangular plate being fixedly sleeved on the top of the outer wall of the material storage barrel, a side wall of the rectangular plate being fixedly connected to the lifting plate by fixing two sliding blocks thereon, an extrusion mechanism being provided at the bottom of the material storage barrel, and a pick-and-place mechanism being provided at one side of the platform.

[0006] As a preferred technical solution of the present invention, two grooves are provided on one side of the transmission block, and connecting blocks are snap-connected inside the two grooves, and the two connecting blocks are snap-connected to a side wall of the positioning frame.

[0007] As a preferred technical solution of the present invention, the positioning frame is fixedly arranged on the top of the platform, the positioning plug plate is slidably inserted into the inner wall of the positioning frame, the positioning flap is hinged to the positioning plug plate, the middle part of the positioning plug plate is fixedly embedded with a shoe upper padding, and a sewing groove is opened in the middle part of the positioning flap.

[0008] As a preferred technical solution of the present invention, a locking column is rotatably connected to one side of the top of the positioning plug plate, a locking groove is opened on one side of the positioning flap, and the position of the upper padding corresponds to the sewing groove.

[0009] As a preferred technical solution of the present invention, a vertical plate is provided between the rectangular plate and the lifting plate, the two sliding blocks are slidably connected to the sliding groove opened in the middle of the vertical plate, the bottom end of the lifting plate is rotatably connected to a screw rod, the bottom of the side wall of the vertical plate is fixedly connected to a semicircular plate, the screw thread passes through the middle of the semicircular plate, and the bottom of the screw rod is fixedly connected to a turning handle.

[0010] As a preferred technical solution of the present invention, the two positioning sleeves are fixedly arranged at the top of the storage barrel, the top of the positioning sleeve is fixedly provided with a discharge nozzle, and the top of the vertical plate is fixedly connected to the bottom of the platform.

[0011] As a preferred technical solution of the present invention, the extrusion mechanism includes an electric telescopic rod, an extrusion plate and a foaming material, the foaming material is filled in the interior of a storage barrel, the extrusion plate is movably arranged in the interior of the storage barrel, an L-shaped plate is installed on the side wall of the storage barrel, one end of the L-shaped plate is fixedly connected to the electric telescopic rod, the output end of the electric telescopic rod is transmission-connected to the extrusion plate, and the outer wall of the extrusion plate is sleeved with a rubber ring.

[0012] As a preferred technical solution of the present invention, the picking and placing mechanism includes a storage box, a plurality of narrow plates and a plurality of rocker plates. The storage box is fixedly arranged on the side wall of the platform. A plurality of strip grooves are opened at the bottom end of the storage box. One end of the plurality of narrow plates is respectively hinged to the inner wall of one side of the plurality of strip grooves.

[0013] As a preferred technical solution of the present invention, the plurality of seesaws are respectively placed at the bottom of the plurality of narrow plates, a U-shaped plate is fixedly connected to one side of the bottom end of the storage box, a support rod is fixedly passed through the middle of the U-shaped plate, and the middle parts of the bottom ends of the plurality of seesaws are rotatably connected to the support rod.

[0014] As a preferred technical solution of the present invention, one side of the top of each of the plurality of seesaws is fixedly connected with a top column, each of the plurality of top columns corresponds to the positions of a plurality of narrow plates respectively, one end of each of the plurality of seesaws is fixedly connected with a marking plate, and the top of the marking plate is fixedly connected with a marking paper.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. The present invention can quickly position the leather upper in a flat state inside the positioning frame by setting the upper positioning mechanism. The positioning frame is controlled to move by the automatic sewing machine, and the leather upper is automatically sewn in cooperation with the sewing part of the automatic sewing machine. The leather upper only needs to be placed on the upper padding cloth of the positioning plug plate. With the help of the hinged positioning flap, it can be turned over to cover and position, and inserted into the positioning frame for installation. The specific upper padding cloth and sewing groove match the current shape of the leather upper. The one-to-one shape matching can accurately position and sew, improve the sewing accuracy, reduce quality problems such as crooked seams, and reduce the scrap rate. The leather upper is easy to load and unload, and the positioning flap, the positioning plug plate and the upper padding cloth are simple in structure and low in cost. A simpler structure can be used to obtain greater processing efficiency and processing accuracy.

[0017] 2. The present invention provides a through groove on the platform, and an adaptive positioning mechanism is provided at the bottom of the through groove. With the help of a storage barrel and two positioning sleeves, the foaming material can be squeezed out from two discharge nozzles and filled into the inner cavity of the partially formed leather shoe by cooperating with the extrusion mechanism. Since the extrusion process can adapt to the shape of the inner cavity of the leather shoe, a mold structure matching the shape of the inner cavity can be formed after drying to support the inside of the leather shoe and support the curve of the upper so that it can be kept in the wearing state for sewing processing. The sewing line is more in line with the shape of the leather shoe, avoiding the leather shoe upper being flattened and then sewing that does not match the wearing state, so that the direction of the sewing line is more in line with the wearing state, improving the processing quality, and reducing the difficulty of sewing.

[0018] 3. The present invention can store a large number of positioning plugs containing upper cloths of different shapes by providing a storage box, a narrow plate, a seesaw and a plurality of marking plates in the pick-and-place mechanism. According to the current processed upper shape, the corresponding positioning plug can be quickly selected for use. The marking paper on the marking plate is sprayed with upper cloths of different shapes one by one. Therefore, by manually pressing the current marking plate, the positioning plug of this shape can be correspondingly tilted. A large number of positioning structures can be stored on one side of the platform. When replacement is selected, they can be quickly found and used, which is convenient for storing and taking a plurality of different positioning plugs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a structural schematic diagram of the present invention;

[0020] Figure 2 It is a structural schematic diagram of the adaptive positioning mechanism of the present invention;

[0021] Figure 3 It is a structural schematic diagram of the extrusion mechanism of the present invention;

[0022] Figure 4 It is a structural schematic diagram of the upper positioning mechanism of the present invention;

[0023] Figure 5It is a structural schematic diagram of the pick-and-place mechanism of the present invention;

[0024] Figure 6 It is a schematic structural diagram of the seesaw portion of the present invention.

[0025] In the figure: 1, platform; 2, automatic sewing machine; 3, transmission block; 4, upper positioning mechanism; 401, positioning plug plate; 402, positioning flap; 403, upper pad; 404, sewing groove; 405, locking column; 406, locking groove; 407, positioning frame; 5, pick-and-place mechanism; 501, storage box; 502, narrow plate; 503, U-shaped plate; 504, support rod; 505, seesaw; 506, marking plate; 50 7. Top column; 508. Marking paper; 6. Adaptive positioning mechanism; 601. Vertical plate; 602. Slide groove; 603. Lifting plate; 604. Semicircular plate; 605. Screw; 606. Turning screw; 607. Rectangular plate; 608. Storage barrel; 609. Positioning sleeve; 7. Through groove; 8. Extrusion mechanism; 801. Foaming material; 802. Extrusion plate; 803. Electric telescopic rod; 804. L-shaped plate; 9. Connecting block. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0027] See also Figures 1 to 6 The present invention provides a technical solution for an automatic positioning sewing device that adapts to changes in the upper:

[0028] Embodiment 1:

[0029] according to Figure 1 , Figure 4As shown, an automatic positioning sewing device that adapts to the changes in the upper includes a platform 1 and an automatic sewing machine 2. The automatic sewing machine 2 is installed on the top of the platform 1. A transmission block 3 is installed on the slide rail of the automatic sewing machine 2. The automatic sewing machine 2 is controlled by a computer and is provided with an automatic monitoring system, automatic sewing, sewing according to a set trajectory, needle stopping, thread cutting, and a series of sewing machines that can automatically complete a certain sewing process. Here, the automatic sewing machine 2 is controlled by a computer, and drives the movement of the transmission block 3 according to the set trajectory, thereby driving the movement of the positioning plug plate 401 connected thereto, and cooperates with the sewing part of the automatic sewing machine 2 (here it does not move) to complete the sewing processing of the set trajectory. Operation, a shoe upper positioning mechanism 4 is provided on one side of the transmission block 3, the shoe upper positioning mechanism 4 includes a positioning frame 407, a positioning plug plate 401, a shoe upper pad 403 and a positioning flap 402, a through slot 7 is opened in the middle of the platform 1, and an adaptive positioning mechanism 6 is provided at the bottom of the through slot 7, and the adaptive positioning mechanism 6 includes two positioning sleeves 609, a storage barrel 608 and a lifting plate 603, a rectangular plate 607 is fixedly sleeved on the top of the outer wall of the storage barrel 608, and one side wall of the rectangular plate 607 is fixedly connected to the lifting plate 603 by fixing two sliding blocks, an extrusion mechanism 8 is provided at the bottom of the storage barrel 608, and a pick-up and placement mechanism 5 is provided on one side of the platform 1.

[0030] One side of the transmission block 3 is provided with two grooves, the interiors of the two grooves are both engaged with connecting blocks 9, the two connecting blocks 9 are engaged with one side wall of the positioning frame 407, the positioning frame 407 is fixedly arranged at the top of the platform 1, the positioning plug plate 401 is slidably inserted into the inner wall of the positioning frame 407, the positioning flap 402 is hinged to the positioning plug plate 401, the middle part of the positioning plug plate 401 is fixedly embedded with a shoe upper pad 403, the middle part of the positioning flap 402 is provided with a sewing groove 404, and one side of the top of the positioning plug plate 401 is rotatably connected There is a locking column 405, and a locking groove 406 is opened on one side of the positioning flap 402. The position of the upper pad 403 corresponds to the position of the sewing groove 404. The shape of the locking column 405 is consistent with the shape of the locking groove 406. Therefore, when the locking column 405 is rotated a certain angle, it can pass through the locking groove 406. When it rotates, it is misaligned with the locking groove 406, so that the locking column 405 will not be separated from the locking groove 406. In this way, the positioning plug plate 401 and the positioning flap 402 are snapped together, and the leather upper can be limited between the two.

[0031] In specific use, the automatic positioning sewing device of the present invention that adapts to the change of the upper is used. The operator can place the leather upper in a flat state in the upper positioning mechanism 4 to position it, and then use the automatic sewing machine 2 to drive the transmission block 3 to drive the positioning frame 407, and cooperate with the automatic sewing machine 2 to sew the leather upper inserted in the positioning frame 407. The specific operation steps are: select a positioning plug plate 401, rotate the positioning flap 402 to open, place the leather upper to be processed on the upper pad 403, and then cover the positioning flap 402 to position the leather upper. When the positioning flap 402 is covered, the locking groove 406 passes through the locking column 405, and then rotate The locking column 405 is locked, so that the leather shoe upper is positioned between the positioning plug plate 401 and the positioning flap 402. In this way, the current positioning plug plate 401 is inserted into the positioning frame 407. The positioning frame 407 moves under the control of the automatic sewing machine 2, and the automatic sewing machine 2 drives the transmission block 3, the transmission block 3 drives the connecting block 9, and finally drives the movement of the positioning frame 407, and cooperates with the automatic sewing machine 2 to complete the sewing process. The automatic sewing machine 2 will sew the leather upper placed on the upper pad 403 along the sewing groove 404. When the sewing is completed, the positioning plug plate 401 is pulled out of the positioning frame 407, the positioning flap 402 is opened, and the leather upper sewn in between is taken out.

[0032] Embodiment 2:

[0033] On the basis of the first embodiment, Figure 1 and Figure 2 , Figure 3As shown, a vertical plate 601 is provided between the rectangular plate 607 and the lifting plate 603, and two sliders are slidably connected to the slide groove 602 opened in the middle of the vertical plate 601, and the bottom end of the lifting plate 603 is rotatably connected with a screw rod 605, and the bottom of the side wall of the vertical plate 601 is fixedly connected with a semicircular plate 604, and the screw rod 605 threadedly penetrates the middle of the semicircular plate 604, and the bottom of the screw rod 605 is fixedly connected with a handle 606. The positioning sleeve 609 can be driven to rise by adjusting and rotating the screw 605, so as to adjust the height to a height suitable for the operator to operate, and pass through the through groove 7, so that the internal mold of the leather shoe can be made at a suitable height. After the production is completed, it can be supported inside the leather shoe with the help of the dry-formed foaming material 801, so that the shoe upper can be sewn in the state of being worn, and the two positioning sleeves 609 are fixedly arranged on the top of the storage barrel 608, and the top of the positioning sleeve 609 A discharge nozzle is fixedly provided, the top of the vertical plate 601 is fixedly connected to the bottom of the platform 1, the extrusion mechanism 8 includes an electric telescopic rod 803, an extrusion plate 802 and a foaming material 801, the foaming material 801 is filled in the interior of the storage barrel 608, the foaming material 801 is a polymer material, made of foaming powder, polyethanol and glycerin, is soft when extruded, and can adapt to match various shapes, and is formed after being exposed to the air for a period of time to dry, and is supported in the inner cavity of the leather shoe of the corresponding shape, the extrusion plate 802 is movably arranged in the storage barrel 608, and the side wall of the storage barrel 608 is installed with an L-shaped plate 804, one end of the L-shaped plate 804 is fixedly connected to the electric telescopic rod 803, the output end of the electric telescopic rod 803 is transmission-connected to the extrusion plate 802, and the outer wall of the extrusion plate 802 is provided with a rubber ring to increase the sealing and prevent the foaming material 801 from being squeezed out from the bottom during extrusion.

[0034] In specific use, the automatic positioning sewing device of the present invention adapts to the change of the upper. When it is necessary to sew a three-dimensional leather upper with a certain shape, the upper positioning mechanism 4 can be disassembled to expose the through groove 7 on the platform 1, so that the hand holds the bottom of the screw 605 and rotates it, so that the screw 605 rotates to drive the lifting plate 603 to rise, thereby driving the two positioning sleeves 609 to rise. At this time, the leather shoe cover can be placed on the two positioning sleeves 609, and then the electric telescopic rod 803 is turned on, so that the electric telescopic rod 803 drives the extrusion plate 802 to extrude, so that the internal foaming material 801 is squeezed from the two The material is extruded through the discharge nozzle and filled inside the leather shoe. The filling process adapts to the internal shape of the leather shoe. After a period of drying, a foaming mold matching the inner cavity of the current type of leather shoe can be formed. At this time, the foaming mold can be removed and left inside the leather shoe to prop up the leather upper so that it can maintain the curved shape when worn. It is manually held and sewn with the automatic sewing machine 2. After the mold is made, this type of leather upper can be quickly sewn. When the upper is replaced, the foaming material 801 can be filled again in the same steps to make the corresponding filling mold.

[0035] Embodiment three:

[0036] On the basis of the first and second embodiments, Figure 1 and Figure 5 , Figure 6 As shown, the pick-and-place mechanism 5 includes a storage box 501, a plurality of narrow plates 502 and a plurality of rocker plates 505. The storage box 501 is fixedly arranged on the side wall of the platform 1. A plurality of strip grooves are provided at the bottom end of the storage box 501. One end of the plurality of narrow plates 502 is hinged to the inner wall of one side of the plurality of strip grooves.

[0037] A plurality of seesaws 505 are respectively placed at the bottom of a plurality of narrow plates 502, a U-shaped plate 503 is fixedly connected to one side of the bottom end of the storage box 501, a support rod 504 is fixedly passed through the middle of the U-shaped plate 503, the middle parts of the bottom ends of the plurality of seesaws 505 are rotatably connected to the support rod 504, a top column 507 is fixedly connected to one side of the top end of the plurality of seesaws 505, and the plurality of top columns 507 respectively correspond to the positions of the plurality of narrow plates 502, a marking plate 506 is fixedly connected to one end of the plurality of seesaws 505, a marking paper 508 is fixedly connected to the top end of the marking plate 506, and different marking papers 508 are pre-sprayed with corresponding shoe upper pad cloth 403 shapes, so that the operator can observe the marking plate 506 to quickly know the position of the positioning plug plate 401 of the current shape.

[0038] In specific use, the automatic positioning sewing device of the present invention that adapts to the change of the upper is used to sew the flat leather upper. Since different upper shapes correspond to upper pads 403 and sewing grooves 404 of different shapes, multiple positioning plugs 401 with upper pads 403 and sewing grooves 404 of different shapes are stored in reserve according to the different types of leather upper processing. These positioning plugs 401 are respectively inserted into the storage box 501 of the pick-and-place mechanism 5, and each positioning plug 401 corresponds to a narrow plate 502, and at the same time, the corresponding shoe upper pad 403 shape is sprayed on the marking paper 508 of the marking plate 506 corresponding to each narrow plate 502, so that the operator can observe the marking plate 506 to quickly know the position of the positioning plug plate 401 of the current shape, and can manually press the marking plate 506 to tilt the seesaw 505, and use the top column 507 on the seesaw 505 to lift a part of the current corresponding positioning plug plate 401, so that the operator can hold the tilted part and quickly take out the current positioning plug plate 401 for use.

[0039] In the present invention, unless otherwise clearly specified and limited, the first feature "on" or "under" the second feature may be that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. In the description of this specification, the description with reference to the terms "one scheme", "some schemes", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the scheme or example are included in at least one scheme or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same scheme or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more schemes or examples in a suitable manner.

Claims

1. An automatic positioning sewing device adapted to changes in the upper of a shoe, comprising a platform (1) and an automatic sewing machine (2), characterized in that: The automatic sewing machine (2) is installed on the top of the platform (1), a transmission block (3) is installed on the slide rail of the automatic sewing machine (2), a shoe upper positioning mechanism (4) is provided on one side of the transmission block (3), the shoe upper positioning mechanism (4) comprises a positioning frame (407), a positioning plug plate (401), a shoe upper padding (403) and a positioning flap (402), a through slot (7) is opened in the middle of the platform (1), and an adaptive positioning mechanism is provided at the bottom of the through slot (7). The adaptive positioning mechanism (6) comprises two positioning sleeves (609), a material storage barrel (608) and a lifting plate (603); a rectangular plate (607) is fixedly sleeved on the top of the outer wall of the material storage barrel (608); a side wall of the rectangular plate (607) is fixedly connected to the lifting plate (603) by fixing two sliding blocks; an extrusion mechanism (8) is provided at the bottom of the material storage barrel (608); and a pick-up and placement mechanism (5) is provided on one side of the platform (1).

2. The automatic positioning sewing device that adapts to the changes of the upper according to claim 1 is characterized in that: Two grooves are provided on one side of the transmission block (3), and connecting blocks (9) are snap-fitted and connected inside the two grooves. The two connecting blocks (9) are snap-fitted and connected to a side wall of the positioning frame (407).

3. The automatic positioning sewing device that adapts to the change of the upper according to claim 1 is characterized by: The positioning frame (407) is fixedly arranged on the top of the platform (1), the positioning plug plate (401) is slidably inserted into the inner wall of the positioning frame (407), the positioning flap (402) is hinged to the positioning plug plate (401), a shoe upper padding (403) is fixedly embedded in the middle of the positioning plug plate (401), and a sewing groove (404) is opened in the middle of the positioning flap (402).

4. The automatic positioning sewing device adapted to the change of the upper according to claim 3, characterized in that: A locking column (405) is rotatably connected to one side of the top of the positioning plug plate (401), a locking groove (406) is provided on one side of the positioning flap (402), and the positions of the upper padding (403) and the sewing groove (404) correspond to each other.

5. The automatic positioning sewing device that adapts to the change of the upper according to claim 1 is characterized by: A vertical plate (601) is provided between the rectangular plate (607) and the lifting plate (603), and the two sliding blocks are slidably connected to a slide groove (602) provided in the middle of the vertical plate (601). The bottom end of the lifting plate (603) is rotatably connected to a screw rod (605), and the bottom of the side wall of the vertical plate (601) is fixedly connected to a semicircular plate (604), and the screw rod (605) is threadedly passed through the middle of the semicircular plate (604), and the bottom of the screw rod (605) is fixedly connected to a turning handle (606).

6. The automatic positioning sewing device adapted to the change of the upper according to claim 5, characterized in that: The two positioning sleeves (609) are fixedly arranged at the top end of the storage barrel (608), and a discharge nozzle is fixedly arranged at the top end of the positioning sleeve (609). The top end of the vertical plate (601) is fixedly connected to the bottom end of the platform (1).

7. The automatic positioning sewing device adapted to the change of the upper according to claim 1, characterized in that: The extrusion mechanism (8) comprises an electric telescopic rod (803), an extrusion plate (802) and a foaming material (801); the foaming material (801) is filled in a material storage barrel (608); the extrusion plate (802) is movably arranged in the material storage barrel (608); an L-shaped plate (804) is installed on the side wall of the material storage barrel (608); one end of the L-shaped plate (804) is fixedly connected to the electric telescopic rod (803); the output end of the electric telescopic rod (803) is transmission-connected to the extrusion plate (802); and a rubber ring is sleeved on the outer wall of the extrusion plate (802).

8. The automatic positioning sewing device that adapts to the change of the upper according to claim 1 is characterized by: The pick-and-place mechanism (5) comprises a storage box (501), a plurality of narrow plates (502) and a plurality of seesaws (505); the storage box (501) is fixedly arranged on the side wall of the platform (1); a plurality of strip grooves are provided at the bottom end of the storage box (501); one end of the plurality of narrow plates (502) is respectively hinged to the inner wall of one side of the plurality of strip grooves.

9. The automatic positioning sewing device adapted to the change of the upper according to claim 8, characterized in that: The plurality of seesaws (505) are respectively placed at the bottom of the plurality of narrow plates (502); a U-shaped plate (503) is fixedly connected to one side of the bottom end of the storage box (501); a support rod (504) is fixedly passed through the middle of the U-shaped plate (503); and the middle parts of the bottom ends of the plurality of seesaws (505) are rotatably connected to the support rod (504).

10. The automatic positioning sewing device adapting to the change of the upper according to claim 1, characterized in that: One side of the top of each of the plurality of seesaws (505) is fixedly connected to a top column (507), and each of the plurality of top columns (507) corresponds to a position of each of the plurality of narrow plates (502). One end of each of the plurality of seesaws (505) is fixedly connected to a marking plate (506), and a marking paper (508) is fixedly connected to the top of each of the marking plates (506).

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