Special-shaped contour anti-skid pen bag sewing tool

Abstract

This utility model discloses a sewing fixture for irregularly shaped, non-slip pencil cases, relating to the technical field of garment accessory sewing auxiliary equipment. It includes a lower pressure plate assembly and an upper pressure plate assembly. The lower pressure plate assembly includes a lower pressure plate body with a bottom irregular opening that penetrates through the lower pressure plate body. The upper pressure plate assembly includes an upper pressure plate body, a pressure cap, and a rotating plate. One end of the upper pressure plate body is hinged to the lower pressure plate body, and a top irregular opening of the same shape and size is provided on it corresponding to the bottom irregular opening, penetrating through the upper pressure plate body. The pressure cap is disposed within the top irregular opening, and the outer peripheral wall of the pressure cap and the wall of the top irregular opening form a sewing path of the same width. One end of the rotating plate is rotatably mounted to one side of the irregular opening, and the other end of the rotating plate is fixedly connected to the pressure cap. This design solves problems such as poor clamping stability and non-standard sewing when sewing irregularly shaped pencil cases, improving the quality and efficiency of pencil case production.

Description

Technical Field

[0001] This utility model relates to the technical field of sewing auxiliary equipment for clothing accessories, and in particular to a non-slip pencil case sewing garment with an irregular contour. Background Technology

[0002] During the production of pencil cases for clothing, the variety of styles and shapes makes it difficult for employees to quickly adapt to different production requirements, resulting in low operational efficiency. Furthermore, when producing pencil cases with irregular shapes, without suitable auxiliary tooling, problems such as left-right asymmetry and inconsistent shapes and sizes can easily occur. This not only increases the product rework rate but also seriously affects the customer experience.

[0003] Taking the suit pocket disclosed in Chinese patent ZL201220617064.2 as an example, its manufacturing method involves sewing together multiple layers of fabric for the pencil case according to the pocket's outline, then making holes, turning the upper layer of fabric inward from the opening, and finally ironing. However, due to the pocket's irregular shape, it is difficult to ensure standardization when sewing its outline. Currently, the existing solution is to cut a specific shape from cardboard according to the irregular outline, and then have a sewing machine sew along the outline of the cardboard. However, because the fabric is multi-layered, the clamping stability between the cardboard and the fabric is poor during the rotational sewing process, which can easily lead to fabric slippage, resulting in inaccurate sewing and affecting the quality of the pencil case. Utility Model Content

[0004] The purpose of this invention is to provide a non-slip pencil case sewing fixture with irregular contours to solve the problems of poor clamping stability and non-standard sewing in the existing technology when sewing pencil cases with irregular contours, thereby improving the quality and efficiency of pencil case production.

[0005] To achieve the above objectives, this utility model provides a non-slip pencil case sewing fixture with an irregular contour, comprising a lower pressure plate assembly and an upper pressure plate assembly. The lower pressure plate assembly includes a lower pressure plate body with an irregular bottom opening that penetrates through the lower pressure plate body. The upper pressure plate assembly includes an upper pressure plate body, a pressure cap, and a rotating plate. One end of the upper pressure plate body is hinged to the lower pressure plate body, and a top irregular opening of the same shape and size is provided on it corresponding to the bottom irregular opening, penetrating through the upper pressure plate body. The pressure cap is disposed within the top irregular opening, and the shape of the pressure cap is similar to and proportionally reduced from the top irregular opening. The outer peripheral wall of the pressure cap and the wall of the top irregular opening form a sewing path of the same width. One end of the rotating plate is rotatably mounted on one side of the top irregular opening, and the other end of the rotating plate is fixedly connected to the pressure cap. When the rotating plate is rotated, the pressure cap can be driven to extend into the top irregular opening along its rotation trajectory.

[0006] With the above structure, by setting up a lower pressure plate assembly and an upper pressure plate assembly, the upper pressure plate body is hinged to the lower pressure plate body and correspondingly set with irregular openings. The pressure cap is set in the irregular opening at the top and connected to the rotating plate, which can realize the opening and closing action to facilitate the placement and removal of the fabric. At the same time, the upper and lower pressure plates clamp the fabric to ensure the clamping stability of the fabric, effectively avoiding the problem of the fabric sliding due to multi-layer rotation during the sewing process, greatly improving the standardization and stability of sewing, and reducing the rework rate.

[0007] Preferably, there are two rotating plates, located on opposite sides of the irregular opening at the top; a pressure cap is fixed to the other end of each rotating plate. In the initial state, one of the rotating plates can be rotated down so that the corresponding pressure cap extends into the irregular opening at the top. When sewing reaches the position of that rotating plate, the sewing machine head is lifted to replace the rotating plate and avoid the sewing path. This solves the problem of uneven stitching caused by the lack of positioning when the rotating plate blocks the stitching in the existing method, thus improving the accuracy of sewing.

[0008] Preferably, a magnet is installed between the rotating plate and the upper pressure plate; when the rotating plate is in contact with the upper pressure plate, it is magnetically attached to it. This design allows the rotating plate to be securely fixed to the upper pressure plate when not in use, preventing it from wobbling and thus avoiding interference with fabric placement and sewing. Simultaneously, when the rotating plate is needed to assist in fabric positioning, it can be easily removed, making operation convenient and quick, and improving work efficiency.

[0009] Preferably, the side of the pressure cap that extends into the irregularly shaped opening at the bottom is provided with a friction layer, which abuts against the fabric to prevent the fabric from slipping. This design effectively increases the friction between the pressure cap and the fabric. When sewing irregularly shaped pencil cases, the fabric is prone to slipping due to rotation. The friction layer prevents the fabric from slipping, ensuring the stability of the fabric's position during sewing, thereby improving the accuracy and quality of the sewing and making the pencil case more standardized in shape.

[0010] Preferably, the lower pressure plate and the upper pressure plate are provided with clamping magnets that attract each other on the side away from their hinge edges. The attraction force of the clamping magnets allows the two plates to fit more tightly together, further enhancing the clamping force on the fabric. This design effectively prevents the lower and upper pressure plates from separating due to external forces during sewing, ensuring that the fabric remains in a stable clamped state and improving the reliability of sewing.

[0011] Preferably, the hinge edge of the lower pressure plate and the upper pressure plate is bonded together with adhesive tape. This tape bonding method can, to some extent, fix the relative positions of the lower and upper pressure plates without affecting their opening and closing movements. During sewing, the tape bonding provides auxiliary fixation, reducing wobbling between the lower and upper pressure plates, improving the stability of the tooling, and thus enhancing sewing quality, all at a lower cost.

[0012] Preferably, the rotating plate and the upper pressure plate are bonded together with adhesive tape. The adhesive tape bonding enables the rotating assembly of the rotating plate and also has a certain buffering effect, which can reduce the collision and wear between the rotating plate and the upper pressure plate and extend the service life of the tooling.

[0013] Preferably, the corner between the lower pressure plate and the upper pressure plate is a rounded corner. The rounded corner design can prevent the fabric from being scratched or torn by the sharp corner during the sewing process. At the same time, it can also make the fabric pass through the corner more smoothly, reduce the wrinkles and deformation of the fabric at the corner, and improve the overall appearance quality of the pencil case.

[0014] After adopting the above technical solution, the beneficial effects of this utility model are: This utility model, a non-slip pencil case sewing fixture with irregular contours, solves the problems of poor clamping stability and non-standard sewing in existing technologies when sewing irregular contour pencil cases. This utility model uses a lower pressure plate assembly and an upper pressure plate assembly. The upper pressure plate is hinged to the lower pressure plate and has a corresponding irregular opening. The pressure cap is located in the top irregular opening and connected to a rotating plate, allowing for easy placement and removal of the fabric through opening and closing. Simultaneously, the upper and lower pressure plates clamp the fabric, ensuring its clamping stability and effectively preventing slippage caused by multiple layers of rotation during sewing. This greatly improves the standardization and stability of the sewing process and reduces the rework rate. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of an irregularly shaped, non-slip pencil case; Figure 2 This is a structural schematic diagram of a non-slip pencil case sewing fixture with an irregular outline (in unfolded state) according to this utility model; Figure 3 This is a structural schematic diagram of a non-slip pencil case sewing fixture with an irregular contour (closed state) according to this utility model; Figure 4 yes Figure 3 Side sectional view; Figure 5 This is a structural diagram of the pressure cap and the rotating plate.

[0016] In the diagram, 1. multi-layer fabric, 11. stitching, 2. lower pressure plate, 21. bottom irregular opening, 3. upper pressure plate, 31. top irregular opening, 4. pressure cap, 5. rotating plate, 51. magnet, 6. clamping magnet. Detailed Implementation

[0017] The present invention will be further described below with reference to the accompanying drawings.

[0018] The orientations mentioned in this specification refer to the orientation of the irregular contour anti-slip pencil case sewing garment of this utility model during normal operation, and do not limit its orientation during storage and transportation. They only represent relative positional relationships and do not represent absolute positional relationships.

[0019] like Figure 1 As shown, seam lines 11 need to be sewn onto the multi-layered fabric 1 using a sewing machine.

[0020] like Figure 2 , Figure 3 and Figure 4 As shown in the figure, an irregularly shaped, non-slip pencil case sewing fixture includes a lower pressure plate assembly and an upper pressure plate assembly.

[0021] The lower pressure plate assembly includes a lower pressure plate body 2, on which a bottom irregular opening 21 is provided, penetrating the lower pressure plate body 2. The upper pressure plate assembly includes an upper pressure plate body 3, a pressure cover 4, and a rotating plate 5.

[0022] One end of the upper pressure plate 3 is hinged to the lower pressure plate 2, and a top irregular opening 31 with the same shape and size as the bottom irregular opening 21 is provided on it, and the top irregular opening 31 penetrates the upper pressure plate 3.

[0023] The upper pressure plate 3 and the lower pressure plate 2 can be hinged using a flexible hinge. In this embodiment, a flexible tape is used for partial adhesion, with the tape having an elongation rate of no less than 50%. This tape adhesion method can, to a certain extent, fix the relative positions of the lower pressure plate 2 and the upper pressure plate 3 without affecting their opening and closing actions. During the sewing process, the tape adhesion provides a certain degree of auxiliary fixation, reducing the shaking between the lower pressure plate 2 and the upper pressure plate 3, improving the stability of the tooling, and thus enhancing the sewing quality.

[0024] The hinged structure between the upper pressure plate 3 and the lower pressure plate 2 allows for opening and closing, facilitating the placement and removal of fabric. The clamping of the fabric by the upper and lower pressure plates 3 and 2 ensures stability and effectively prevents slippage caused by multi-layer rotation during sewing, significantly improving sewing standardization and stability and reducing rework rates. The pressure cap 4 is positioned within the top irregular opening 31, and its shape is proportionally smaller than and mirrors the opening 31. The outer periphery of the pressure cap 4 and the wall of the top irregular opening 31 form a sewing path of the same width. The dimensional difference between the top irregular opening 31 and the pressure cap 4 is 3-5mm (i.e., the sewing path width), adapting to common sewing machine stitch lengths.

[0025] The lower pressure plate 2 and the upper pressure plate 3 can be made of plastic, metal, or composite materials. The corners of the lower pressure plate 2 and the upper pressure plate 3 are rounded. The rounded corner design prevents the fabric from being scratched or torn by sharp corners during sewing, and also allows the fabric to pass through the corners more smoothly, reducing wrinkles and deformation at the corners and improving the overall appearance of the pencil case.

[0026] like Figure 5 As shown, one end of the rotating plate 5 is rotatably mounted on one side of the top irregular opening 31, and its rotation is preferably achieved by adhesive tape. Adhesive tape bonding also provides a certain buffering effect, reducing collisions and wear between the rotating plate 5 and the upper pressure plate, and extending the service life of the tooling. The other end of the rotating plate 5 is fixedly connected to the pressure cover 4; when the rotating plate 5 is rotated, the pressure cover 4 can be driven to extend into the top irregular opening along its rotation trajectory, used to press and fix the fabric placed between the upper and lower pressure plates.

[0027] The rotating plate 5 can further assist in the positioning and fixing of the fabric, while the pressure plate 4 plays a final fixing role, effectively avoiding the problem of fabric slippage caused by multi-layer rotation during sewing, greatly improving the standardization and stability of sewing, and reducing the rework rate.

[0028] In practical applications, because the rotating plate 5 obstructs part of the sewing path, the sewing process is interrupted at that position. The existing method is to sew the other parts as is, and then sew the part obstructed by the rotating plate 5 after lifting it. However, this method lacks proper positioning during sewing, easily leading to skewing. This embodiment further improves upon the above embodiment. Two rotating plates 5 are provided, located on opposite sides of the top irregular opening 31; each rotating plate 5 has a pressure cap 4 fixed to its other end. Initially, one rotating plate 5 is rotated down, and its corresponding pressure cap 4 is inserted into the top irregular opening 31. When sewing reaches the position of the rotating plate 5, the sewing machine head is lifted, and the rotating plate 5 is replaced, thus avoiding obstructing the sewing path.

[0029] Furthermore, to prevent the pressure cap 4 from wobbling freely on the upper pressure plate 3, a magnet 51 is provided between the rotating plate 5 and the upper pressure plate 3. When the rotating plate 5 is in contact with the upper pressure plate 3, the rotating plate 5 is attracted to the upper pressure plate 3. The attraction force is not less than 0.5N. If the upper pressure plate 3 is a metal plate with a certain degree of magnetism, then magnets 51 only need to be installed on both sides of the rotating plate 5. If the upper pressure plate 3 is made of a non-magnetic material, then metal sheets need to be attached to the corresponding positions on the upper pressure plate 3 to achieve the attraction effect. The magnets 51 are provided on both sides, which can fix the pressure cap 4 in two positions: one is the working position, and the other is the avoidance position.

[0030] This design allows the rotating plate 5 to be securely fixed to the upper pressure plate 3 when not in use, preventing it from wobbling and thus avoiding any impact on fabric placement and sewing processes. At the same time, when the rotating plate 5 is needed to assist in fabric positioning, it can be easily removed, making operation convenient and quick, and improving work efficiency.

[0031] The side of the pressure cap 4 that extends into the bottom irregular opening 21 is provided with a friction functional layer. The friction functional layer is a silicone coating or sandpaper layer with a thickness of 0.5-1mm. This friction functional layer abuts against the fabric, which can effectively increase the friction between the pressure cap 4 and the fabric. When sewing irregularly shaped pencil cases, the fabric is prone to sliding due to rotation. The setting of the friction functional layer can prevent the fabric from sliding, ensure the stability of the fabric position during the sewing process, thereby improving the sewing accuracy and quality, and making the shape of the pencil case more standard.

[0032] Clamping magnets 6 are provided on the side of the lower pressure plate 2 and the upper pressure plate 3 away from their hinge edges, attracting each other. When the lower pressure plate 2 and the upper pressure plate 3 are closed, the attraction force of the clamping magnets 6 makes them fit more tightly together, further enhancing the clamping force on the fabric. This design effectively prevents the lower pressure plate 2 and the upper pressure plate 3 from separating due to external forces during sewing, ensuring that the fabric is always in a stable clamped state and improving the reliability of sewing.

[0033] Of course, the above description is not intended to limit the present utility model, and the present utility model is not limited to the examples given above. Any changes, modifications, additions or substitutions made by those skilled in the art within the scope of the present utility model should also fall within the protection scope of the present utility model.

Claims

1. A sewing tool for a pen bag with a special-shaped profile and anti-skid function, characterized in that: Includes the lower pressure plate assembly and the upper pressure plate assembly; The lower pressure plate assembly includes a lower pressure plate body, and the lower pressure plate body is provided with a bottom irregular opening, which penetrates the lower pressure plate body. The upper pressure plate assembly includes an upper pressure plate body, a pressure cover, and a rotating plate; One end of the upper pressure plate is hinged to the lower pressure plate, and a top irregular opening with the same shape and size as the bottom irregular opening is provided on it, and the top irregular opening penetrates the upper pressure plate. The pressure cap is disposed inside the irregular opening at the top, and the shape of the pressure cap is similar to and proportionally reduced from the irregular opening at the top. The outer peripheral wall of the pressure cap and the hole wall of the irregular opening at the top form a sewing path of the same width. One end of the rotating plate is rotatably mounted on one side of the bottom irregular opening, and the other end of the rotating plate is fixedly connected to the pressure cap; when the rotating plate is rotated, the pressure cap can be driven to extend into the top irregular opening along its rotation trajectory.

2. The sewing tool for the special-shaped profile anti-skid pen bag according to claim 1, characterized in that: There are two rotating plates, which are located on opposite sides of the irregular opening at the top; a pressure cap is fixed to the other end of each rotating plate.

3. The sewing tool for the special-shaped profile anti-skid pen bag according to claim 1, characterized in that: A magnet is provided between the rotating plate and the upper pressure plate; when the rotating plate is attached to the upper pressure plate, the rotating plate is attracted to the upper pressure plate.

4. The sewing tool for the profiled contour non-slip pen bag according to claim 1, characterized in that: The side of the pressure cap that extends into the bottom irregular opening is provided with a friction function layer, which abuts against the fabric to prevent the fabric from sliding.

5. The profiled contour slip-resistant pencil bag sewing tool according to claim 1, characterized in that: The lower pressure plate and the upper pressure plate are provided with clamping magnets that attract each other on the side away from their hinge edge.

6. A sewing tool for a profiled anti-slip pen bag according to claim 1, characterized in that: The hinged side of the lower pressure plate and the upper pressure plate is bonded together with adhesive tape.

7. The sewing tool for the special-shaped profile anti-skid pen bag according to claim 1, characterized in that: The rotating plate and the upper pressure plate are bonded together with adhesive tape.

8. The sewing tool for the special-shaped profile anti-skid pen bag according to claim 1, characterized in that: The corner between the lower pressure plate and the upper pressure plate is an arc angle.

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