Mattress cover rubber band sewing positioning device and sewing equipment

Abstract

The utility model relates to a fitted cover rubber band sewing positioning device and sewing equipment, and belongs to the field of home textiles. According to the technical scheme, the fitted sheet rubber band sewing positioning device comprises a rubber band guide part, the rubber band guide part is provided with a guide channel, the height of the guide channel is matched with the thickness of a rubber band, and a positioning scale is arranged at the rear end of the rubber band guide part in the rubber band conveying direction and can move in the direction perpendicular to the guide channel. According to the positioning device, through the rubber band guiding piece, the rubber band penetrates through the rubber band guiding piece to obtain the wire channel, the conveying position of the rubber band is fixed, an operator only needs to control the cutting piece, meanwhile, the extending length of the rubber band relative to the edge of the cutting piece can be visually reflected through the positioning ruler, the operation process of fitted sheet sewing is simplified, and the production efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of home textiles, and in particular to a positioning device for elastic sewing of fitted sheets, and a sewing machine. Background Technology

[0002] A fitted sheet, also known as a mattress cover or bed sheet, is a common household item. Its main function is to cover the mattress, providing protection and aesthetics. It effectively protects the mattress from dust, sweat, dander, and other contaminants, thus extending the mattress's lifespan. Fitted sheets are usually designed with elastic bands to tightly wrap around the mattress, preventing shifting and making them convenient for daily use.

[0003] The elastic band of a fitted sheet usually protrudes slightly from the edge of the fabric piece. During fitted sheet sewing, the elastic band needs to have a certain amount of stretch so that it retracts to a certain extent after sewing and when flattened, to better secure it around the mattress. It is also important that the exposed portion of the elastic band is as evenly and consistently as possible.

[0004] In summary, the sewing of fitted sheets presents significant challenges and requires advanced technical skills. Firstly, the manual operation makes it difficult to precisely achieve the required elasticity in the elastic bands; secondly, the exposed elastic band dimensions are uneven and non-standard; and thirdly, frequent changes in sewing techniques prevent the sewing equipment from performing optimally. Ultimately, this results in low fitted sheet production capacity and a low pass rate. These problems severely restrict production progress, increase costs, and hinder the improvement of product quality. Summary of the Invention

[0005] This invention addresses the problem that current fitted sheet sewing requires operators to simultaneously manipulate the cut pieces and elastic bands, resulting in high process difficulty and low productivity. It provides a fitted sheet elastic band sewing positioning device.

[0006] To solve the above problems, the technical solution adopted by this utility model is a positioning device for sewing elastic bands in fitted sheets. The device includes an elastic band guide with a guide channel whose height is adapted to the thickness of the elastic band. A positioning scale is provided at the rear end of the elastic band guide along the conveying direction of the elastic band. The positioning scale can move in a direction perpendicular to the guide channel. This positioning device uses the elastic band guide to insert the elastic band into the guide channel, fixing its conveying position. The operator only needs to control the cut piece. Simultaneously, the positioning scale visually indicates the extension length of the elastic band relative to the edge of the cut piece, simplifying the fitted sheet sewing process and improving production efficiency.

[0007] As a preferred embodiment of the fitted sheet elastic band sewing positioning device, the rear end of the elastic band guide is further provided with a tension assembly. The tension assembly includes a positioning plate and a clamping bolt. The positioning plate is located above the elastic band guide, and the clamping bolt is threaded onto the positioning plate, with the stud end of the clamping bolt extending into the guide channel. Through the tension assembly, the clamping bolt presses down on the elastic band, providing a certain resistance during the elastic band conveying process, thereby maintaining a fixed elongation of the elastic band and making the elasticity of the elastic band more uniform.

[0008] As a preferred embodiment of the fitted sheet elastic sewing positioning device, it further includes a cut piece positioning assembly located at one edge of the elastic guide. This assists in cut piece positioning and further simplifies the operation process.

[0009] As a preferred embodiment of a fitted sheet elastic seam positioning device, the cut piece positioning assembly is a wound board structure, including an upper board, a middle board, and a lower board. The upper board and the middle board are respectively connected to the two side edges of the lower board. There is a gap between the upper board and the middle board, a gap between the middle board and the lower board, and a gap between the side edge of the middle board and the bending connection of the upper and lower boards. The cut piece positioning assembly adopts a multi-layer wound design, which enables the edges of the cut pieces to form a flanged effect.

[0010] As a preferred embodiment of the fitted sheet elastic sewing positioning device, it further includes a mounting plate. The elastic guide is mounted on the mounting plate, which has a first elongated hole. The length direction of the first elongated hole is perpendicular to the direction of the wire channel, and a mounting bolt is provided in the first elongated hole. The positioning device is mounted via the mounting plate, and its lateral position can be adjusted through the elongated hole.

[0011] As a preferred embodiment of a fitted sheet elastic seam positioning device, the mounting plate is provided with a ruler guide, and one end of the positioning ruler is provided with a connecting rod, which is inserted into the ruler guide. The top of the ruler guide is provided with a second elongated hole, in which a positioning bolt is inserted, and the positioning bolt is driven into the connecting rod. The ruler is adjustable in length and retraction.

[0012] On the other hand, the present invention also provides a sewing device, including the above-mentioned fitted sheet elastic sewing positioning device, wherein the elastic guide is directly opposite the needle of the sewing device.

[0013] As can be seen from the above technical solutions, the advantages of this utility model are as follows: Through structures such as the elastic band guide, positioning ruler, tension assembly, and cut piece positioning assembly, the sewing process of the fitted sheet is simplified and efficiency is improved. The elastic band guide has a guide channel adapted to the thickness of the elastic band, ensuring the stability and accuracy of the elastic band during transport. The design of the positioning ruler allows the operator to intuitively control the extension length of the elastic band relative to the edge of the cut piece, greatly simplifying the operation steps. Furthermore, the addition of the tension assembly ensures that the elastic band maintains a fixed elongation during transport, guaranteeing the uniformity of the elastic force and thus improving the overall quality of the fitted sheet. The presence of the cut piece positioning assembly further assists in the positioning of the cut pieces, making the operation more convenient. The multi-layer winding design of the cut piece positioning assembly also enables the edge-flanging effect of the cut pieces, enhancing the aesthetics and durability of the fitted sheet. The design of the first elongated hole and the ruler guide on the mounting plate allows for adjustment of the lateral position of the positioning device and the extension and retraction of the ruler, adapting to the production needs of different sizes. Furthermore, the sewing equipment proposed in this utility model combines the fitted sheet elastic sewing positioning device with the sewing equipment, realizing the automation and precision improvement of the sewing process, bringing great convenience and efficiency improvement to fitted sheet production. Attached Figure Description

[0014] To more clearly illustrate the technical solution of this utility model, the drawings used in the description will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0015] Figure 1 This is a structural schematic diagram of Embodiment 1 of the present utility model.

[0016] Explanation of main figure symbols

[0017] 1. Elastic band guide, 2. Positioning scale, 3. Positioning plate, 4. Clamping bolt, 5. Cut piece positioning assembly, 6. Mounting plate, 7. First elongated hole, 8. Mounting bolt, 9. Scale guide, 10. Positioning bolt. Detailed Implementation

[0018] To make the objectives, features, and advantages of this utility model more apparent and understandable, the technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings of the specific embodiments. Obviously, the embodiments described below are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this patent, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this patent.

[0019] Example 1

[0020] like Figure 1 As shown, a fitted sheet elastic band sewing positioning device includes a mounting plate 6. The mounting plate 6 is provided with an elastic band guide 1, a positioning ruler 2, and a cut piece positioning assembly 5. The elastic band guide 1 has a guide channel, the height of which is adapted to the thickness of the elastic band. The rear end of the elastic band guide 1 is also provided with a tension assembly. The tension assembly includes a positioning plate 3 and a clamping bolt 4. The positioning plate 3 is located above the elastic band guide 1. The clamping bolt 4 is threaded onto the positioning plate 3, and the stud end of the clamping bolt 4 extends into the guide channel.

[0021] Along the direction of rubber band conveying, the positioning scale 2 is located at the rear end of the rubber band guide 1. The positioning scale 2 can move in a direction perpendicular to the wire channel. Specifically, the mounting plate is provided with a scale guide 9, and one end of the positioning scale 2 is provided with a plug rod. The plug rod is inserted into the scale guide 9. The top of the scale guide 9 is provided with a second elongated hole, and a positioning bolt 10 is provided in the second elongated hole. The positioning bolt 10 is driven into the plug rod.

[0022] The cut piece positioning component 5 is located at one side edge of the elastic band guide 1. The cut piece positioning component 5 is a wound board structure, including an upper board, a middle board and a lower board. The upper board and the middle board are respectively connected to the two side edges of the lower board. There is a gap between the upper board and the middle board, a gap between the middle board and the lower board, and a gap between the side edge of the middle board and the bending connection of the upper board and the lower board.

[0023] The mounting plate 6 has a first elongated hole 7, the length of which is perpendicular to the direction of the wire channel, and a mounting bolt 8 is provided in the first elongated hole 7.

[0024] Example 2

[0025] This embodiment provides a sewing device, including the fitted sheet elastic sewing positioning device described in Embodiment 1. The mounting plate is installed on the table of the sewing device through the first elongated hole 7 and the mounting bolt 8, and the elastic guide 1 is directly opposite the needle of the sewing device.

[0026] As can be seen from the above embodiments, the beneficial effects of this utility model are that, through the structures such as the elastic guide, positioning ruler, tension assembly, and cut piece positioning assembly, the sewing process of the fitted sheet is simplified and efficiency is improved. The elastic guide has a guide channel adapted to the thickness of the elastic, ensuring the stability and accuracy of the elastic during the conveying process. The design of the positioning ruler allows the operator to intuitively control the extension length of the elastic relative to the edge of the cut piece, greatly simplifying the operation steps. In addition, the addition of the tension assembly ensures that the elastic maintains a fixed elongation during the conveying process, guaranteeing the uniformity of the elastic force and thus improving the overall quality of the fitted sheet. The presence of the cut piece positioning assembly further assists in the positioning of the cut pieces, making the operation process more convenient. The multi-layer winding design of the cut piece positioning assembly can also achieve a flanging effect on the edge of the cut piece, enhancing the aesthetics and durability of the fitted sheet. The design of the first elongated hole and the ruler guide on the mounting plate allows for adjustment of the lateral position of the positioning device and the extension and retraction of the ruler, adapting to the production needs of different sizes. Furthermore, the sewing equipment proposed in this utility model combines the fitted sheet elastic sewing positioning device with the sewing equipment, realizing the automation and precision improvement of the sewing process, bringing great convenience and efficiency improvement to fitted sheet production.

[0027] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A positioning device for elastic seams on fitted sheets, characterized in that, It includes an elastic band guide, which has a guide channel. The height of the guide channel is adapted to the thickness of the elastic band. Along the conveying direction of the elastic band, the rear end of the elastic band guide is provided with a positioning scale that can move in a direction perpendicular to the guide channel.

2. The fitted sheet elastic seam positioning device according to claim 1, characterized in that, The rear end of the elastic band guide is also provided with a tension assembly, which includes a positioning plate and a clamping bolt. The positioning plate is located above the elastic band guide, and the clamping bolt is threaded onto the positioning plate. The stud end of the clamping bolt extends into the guide channel.

3. The fitted sheet elastic seam positioning device according to claim 1, characterized in that, It also includes a piece positioning component, which is located on one side edge of the elastic guide.

4. The fitted sheet elastic seam positioning device according to claim 3, characterized in that, The cutting piece positioning assembly is a wound board structure, including an upper board, a middle board and a lower board. The upper board and the middle board are respectively connected to the two side edges of the lower board. There is a gap between the upper board and the middle board, a gap between the middle board and the lower board, and a gap between the side edge of the middle board and the bending connection of the upper board and the lower board.

5. The fitted sheet elastic seam positioning device according to claim 1, characterized in that, It also includes a mounting plate, on which an elastic guide is mounted. The mounting plate has a first elongated hole, the length of which is perpendicular to the direction of the wire channel, and a mounting bolt is provided in the first elongated hole.

6. The fitted sheet elastic seam positioning device according to claim 5, characterized in that, The mounting plate is equipped with a ruler guide, and one end of the positioning ruler is equipped with a plug rod. The plug rod is inserted into the ruler guide. The top of the ruler guide is equipped with a second elongated hole, and a positioning bolt is installed in the second elongated hole. The positioning bolt is driven into the plug rod.

7. A sewing device, characterized in that, Includes the fitted sheet elastic sewing positioning device as described in any one of claims 1-6, wherein the elastic guide is directly opposite the needle of the sewing equipment.

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