Flat material clamp, flat material assembly and guiding device for edging

Abstract

The application relates to a flat material clamp, a flat material assembly and a guiding device for edge covering, wherein the flat material clamp is used for being assembled to a sewing device and guiding sewing material, the flat material clamp has opposite front and back directions and corresponding two lateral directions, the flat material clamp defines a sewing material channel for the sewing material to pass through in the front and back directions, and the flat material clamp comprises a top part located above the sewing material channel and used for smoothing the sewing material, a detection window is arranged on the top part, and the detection window is used for coupling a detection signal with the sewing material; a bottom part connected to the top part, the bottom part is located below the sewing material channel and provides a supporting surface for the sewing material, and at least one lateral direction of the sewing material channel is provided with a connecting part in an open mode, the connecting part is connected with the top part and / or the bottom part, and the flat material clamp is assembled to the sewing device through the connecting part. The flat material clamp in the application can pre-treat the sewing material, improves production stability, and the sewing material in a stable state can provide a basis for automatic detection and control and expand design space.

Description

Technical Field

[0001] This application relates to the field of sewing equipment technology, and more particularly to a flat clamp, a flat assembly, and a guide device for hemming. Background Technology

[0002] In garment and bag manufacturing, binding prevents fabric from fraying and enhances its appearance. It is done by processing the fabric for binding into long, thin straps, folding and wrapping the straps around the fabric to be bound, thus completing the sewing process. Keeping the fabric flat during binding (i.e., "flat seam") is a crucial step in ensuring the finished product's aesthetics and durability.

[0003] For example, if the fabric is not flattened during the binding process, wrinkles or twists can easily form at the seams, especially with lightweight or elastic fabrics (such as chiffon and knitted fabrics). This results in uneven edges on the finished product, affecting its appearance and even causing misalignment between the bound edge and the fabric. If the fabric wrinkles or bunches up, the sewing machine needle may not be able to reliably penetrate multiple layers of fabric, leading to skipped stitches, broken threads, or the binding strap coming undone. Therefore, in existing technologies, manual pretreatment of the fabric is often required to ensure the binding effect.

[0004] Therefore, how to reduce the impact of defective sewing materials on continuous production has become an urgent problem for those skilled in the art. Utility Model Content

[0005] This application provides a flat material clamp that can pre-treat the sewing material before it is combined with the binding tape, thereby effectively reducing the impact of poor sewing material condition on continuous production and improving production stability; at the same time, sewing material in a stable state can also provide a basis for automated detection and control, and expand the design space.

[0006] One embodiment of this application discloses a flat fabric clamp for mounting to a sewing machine and guiding the fabric. The flat fabric clamp has a relative front-to-back direction and two corresponding lateral directions. The flat fabric clamp defines a fabric channel for the fabric to pass through in the front-to-back direction. The flat fabric clamp includes:

[0007] The top, located above the sewing material channel and used to smooth the sewing material, has a detection window for coupling detection signals with the sewing material;

[0008] The bottom is connected to the top, the bottom is located below the sewing channel and provides a supporting surface for the sewing material, and at least one side of the sewing channel is provided with a connecting part that connects the top and / or the bottom. The flat clip is assembled to the sewing equipment through the connecting part.

[0009] Several alternative methods are provided below, but they are not intended as additional limitations on the overall solution above. They are merely further additions or optimizations. Provided there are no technical or logical contradictions, each alternative method can be combined individually with respect to the overall solution above, or multiple alternative methods can be combined with each other.

[0010] In one embodiment, the flat clamp includes a body formed by bending a sheet, the body having a U-shaped cross-section with the U-shaped opening facing one side, the upper portion of the body being the top, and the lower portion of the body being the bottom.

[0011] In one embodiment, the connecting portion is connected to the body, the connecting portion extends away from the U-shaped opening of the body and forms a mounting portion, the mounting portion having a position adjustment hole that cooperates with the sewing equipment.

[0012] In one embodiment, multiple detection windows are independently provided and arranged sequentially in the front-back direction.

[0013] In one embodiment, in the front-back direction, the connecting portion is connected to the middle position of the top, and the detection windows are respectively located on both sides of the connecting portion.

[0014] One embodiment of this application also discloses a flattening assembly, including:

[0015] The flat clamp is the flat clamp in the above technical solution;

[0016] The first and second detectors work in conjunction with each detection window, respectively.

[0017] In one embodiment, the first detector and the second detector are arranged sequentially in the front-back direction.

[0018] One embodiment of this application also discloses a guiding device for edge binding, comprising:

[0019] The flat clamp is the flat clamp in the above technical solution;

[0020] A binding tube provides a binding channel and is used to guide the binding fold to cover the side edge of the fabric;

[0021] The adjusting mechanism is linked to the flat clamp and the binding pull tube, and they move synchronously relative to the sewing position.

[0022] In one embodiment, the exit directions of the binding channel and the sewing material channel intersect, and the intersection point is located downstream of the detection window in the front-back direction.

[0023] In one embodiment, the adjustment mechanism includes:

[0024] An adjusting seat is provided, and the flat material clamp and the edge-binding pull tube are installed on the adjusting seat.

[0025] A guide member, defining a sliding direction in the lateral direction, and the adjustment seat moving relative to the sewing position in that sliding direction;

[0026] The drive assembly includes a rack connected to the adjustment seat and a drive motor that is driven to the rack;

[0027] The drive motor is rotated in a controlled manner to drive the rack to move and cause the adjusting seat to move in a controlled manner relative to the sewing position in the sliding direction.

[0028] The technical solution disclosed in this application pre-treats the sewing fabric using a flat clamp, thereby effectively controlling the flatness of the sewing fabric and reducing the negative impact of unexpected situations such as different shapes and poor conditions of the sewing fabric on continuous production, thus improving production stability. Furthermore, the flat clamp pre-treats the sewing fabric before it is bonded to the strapping, ensuring that the pre-treated fabric, in a stable state, can stably cooperate with the detector, thereby achieving automated detection and further automated control. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application or the conventional technology, the drawings used in the description of the embodiments or the conventional technology will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a schematic diagram of a flat clamp in one embodiment of this application;

[0031] Figure 2 for Figure 1 A schematic diagram of the front and rear directions of the flat material clamp;

[0032] Figure 3 for Figure 1 A schematic diagram of the vertical direction of the flat material clamp in the middle;

[0033] Figure 4 This is a schematic diagram of a guide device for edge binding in one embodiment of this application;

[0034] Figure 5 for Figure 4 A schematic diagram of the internal fit of the guide device used for edging, omitting the housing;

[0035] Figure 6 for Figure 5A schematic diagram of the guiding device used for edging, viewed from another angle;

[0036] Figure 7 This is a schematic diagram of a sewing device in one embodiment of this application.

[0037] The component labels are as follows:

[0038] 100. Sewing equipment; 101. Needle; 102. Flat material clamp; 1021. Fabric channel; 1022. Top; 1023. Bottom; 1024. Connecting part; 1025. Mounting part; 1031. First inspection window; 1032. Second inspection window; 109. Sewing table;

[0039] 204. Edge binding pull tube; 2041. Slide rail; 2042. Rack; 2043. Edge binding channel; 2044. Adjustment seat; 2045. Drive motor; 290. Housing;

[0040] 301. First detector; 302. Second detector;

[0041] 901. Sewing material; 997. Front and back direction; 998. Left and right direction; 999. Up and down direction. Detailed Implementation

[0042] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0043] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on the other component or there may be an intermediate component. When a component is considered to be "connected to" another component, it can be directly connected to the other component or there may be an intermediate component present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0044] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0045] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level (or in a usage state, or from a certain viewpoint in the drawing) than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level (or in a usage state, or from a certain viewpoint in the drawing) than the second feature.

[0046] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0047] In order to avoid the undesirable state of the sewing material 901 when it is combined with the bag strap, such as not being flattened, wrinkled, twisted or even piled up, in the prior art, this application discloses a flat material clamp 102 to pre-treat the sewing material 901 before it is combined with the bag strap, so as to smooth the sewing material 901.

[0048] For details, please see the appendix. Figure 1 and appendix Figure 4 The illustrated embodiment discloses a flat fabric clip 102 for mounting to a sewing machine and guiding the fabric 901. The flat fabric clip 102 has opposing front-to-back directions 997 and corresponding two lateral directions (e.g., attached). Figure 1As shown in the left-right direction 998 and up-down direction 999), the flat fabric clamp 102 defines a fabric channel 1021 for the fabric 901 to pass through in the front-back direction 997. The flat fabric clamp 102 includes a top 1022, a bottom 1023, and a connecting portion 1024 for positioning the two. The connecting portion 1024 connects the top 1022 and / or the bottom 1023 for positioning in three-dimensional space or controlling the overall movement of the flat fabric clamp 102. The top 1022 and the bottom 1023 cooperate to define the fabric channel 1021. The top 1022 is located above the fabric channel 1021 and is used to smooth the fabric 901, while the bottom 1023 is located below the fabric channel 1021 and provides a supporting surface for the fabric 901. In the specific configuration of the sewing channel 1021, the sewing channel 1021 is open on the upper side in the left-right direction 998. One side edge of the sewing fabric 901 enters the sewing channel 1021, while the opposite side edge can be located outside the sewing channel 1021. The distance between the top 1022 and the bottom 1023 is the working distance of the sewing channel 1021. The working distance of the sewing channel 1021 is greater than the edge thickness of the sewing fabric 901 covered with edging to allow the sewing fabric 901 to pass through the sewing channel 1021. Depending on the different extension trends between the top 1022 and the bottom 1023, the working distance of the sewing channel 1021 is uniformly set or varied in the front-back direction 997. Similarly, the working distance of the sewing channel 1021 is uniformly set or varied in the left-right direction 998. In order to realize the thickness detection of the sewing fabric 901 within the sewing channel 1021, a detection window is provided on the top 1022, which allows the detection signal to be coupled with the sewing fabric 901. The coupling here refers to the upper device obtaining the thickness of the seam material at this position (901) through the detection window. For the specific implementation method, please refer to the description of the detector below, which will not be repeated here.

[0049] For details on the structure of the flat clamp 102, please refer to the appendix. Figure 1 To be continued Figure 3 As shown, the flat clip 102 includes a body formed by bending a sheet material. The body has a U-shaped cross-section with the U-shaped opening facing the left-right direction 998. In the up-down direction 999, the upper part of the body is the top 1022, and the lower part is the bottom 1023, i.e., the bottom 1023 is connected to the top 1022. A connecting part 1024 is connected to the body, extending away from the U-shaped opening of the body and providing an adjustable mounting part 1025. The flat clip 102 is mounted to the sewing equipment via the mounting part 1025. In this embodiment, the mounting part 1025 has a position adjustment hole extending in the left-right direction 998, and the mounting part 1025 cooperates with the sewing equipment through the position adjustment hole. The flat clip 102 can release its movement stroke in the left-right direction 998 through the extension direction of the position adjustment hole, adjusting its mounting position relative to the sewing equipment.

[0050] In one embodiment, multiple detection windows are independently provided and sequentially arranged along a front-to-back direction 997. Multiple detection windows enable multiple detection positions to provide more stable detection data. (See attached image) Figure 3 The device includes two detection windows: a first detection window 1031 and a second detection window 1032. In the front-to-back direction 997, a connecting portion 1024 connects to the middle of the top 1022, with the two detection windows located on either side of the connecting portion 1024. In the front-to-back direction 997, the two detection windows are positioned on either side of the flat material clamp 102 to increase the distance between them. In other words, the first detection window 1031 is located near the entrance of the sewing material channel 1021, and the second detection window 1032 is located near the exit of the sewing material channel 1021.

[0051] The flat clamp 102 provides a favorable environment for the detector to operate. (Refer to the attached document.) Figure 7 In the illustrated embodiment, one embodiment of this application also discloses a flattening assembly, including a flattening clamp 102 and a first detector 301 and a second detector 302 cooperating with the flattening clamp 102. The flattening clamp 102 is the same as the flattening clamp 102 described above. The first detector 301 and the second detector 302 respectively cooperate with each detection window. The first detector 301 and the second detector 302 can be the same type of detector, or they can be set as different types of detectors. For example, in the attached... Figure 7 As shown in the embodiment, the first detector 301 is a detector that physically contacts the sewing fabric 901, such as a position detector with a movable detection part, and obtains the thickness of the sewing fabric 901 by detecting the spatial position of the detection part. The second detector 302 is a detector that does not physically contact the sewing fabric 901, such as a laser or ultrasonic detector. The first detector 301 and the second detector 302 are arranged sequentially in the front-back direction 997. The first detector 301 cooperates with the first detection window 1031, and the second detector 302 cooperates with the second detection window 1032. In this embodiment, the physical contact between the first detector 301 and the sewing fabric 901 can help the flattening clamp 102 smooth the sewing fabric 901. Simultaneously, the cooperation between the first detector 301 and the second detector 302 can enable the judgment of highly elastic fabrics, thereby improving the control accuracy of the hemming. Through the triggering conditions of the detectors, the sewing equipment can control the hemming process according to the relative state of the sewing fabric 901 and the binding tape.

[0052] Reference Appendix Figure 4 To be continued Figure 6The illustrated embodiment discloses a guiding device for binding, including a flat material clamp 102, a binding pull tube 204 cooperating with the flat material clamp 102, and an adjusting mechanism. The flat material clamp 102 is the same as the one described in the above-described technical solution. The binding pull tube 204 provides a binding channel 2043 and is used to guide the binding fold to cover the side edge of the sewing fabric 901. The flat material clamp 102 and the binding pull tube 204 are linked to the adjusting mechanism and move synchronously relative to the sewing position. The exit directions of the binding channel 2043 and the sewing fabric channel 1021 intersect, and the intersection point is located downstream of the detection window in the front-to-back direction 997. This arrangement ensures that the sewing fabric 901 advances past the detection position corresponding to the detection window while cooperating with the binding tape, providing a decision basis for automated control.

[0053] Reference Appendix Figure 5 To be continued Figure 6 In the illustrated embodiment, the adjustment mechanism includes an adjustment seat 2044, a guide, and a drive assembly. A flat clamp 102 and a binding puller 204 are mounted to the adjustment seat 2044. The guide defines a sliding direction in the lateral direction (e.g., the left-right direction in one embodiment) in which the adjustment seat 2044 moves relative to the sewing position. Specifically, the guide may be an attachment... Figure 5 The slide rail 2041 is shown. The drive assembly includes a rack 2042 connected to the adjusting seat 2044 and a drive motor 2045 driven by the rack 2042. The drive motor 2045 is rotated in a controlled manner to drive the rack 2042 to move and cause the adjusting seat 2044 to move in a controlled manner relative to the sewing position in the sliding direction. The adjusting seat 2044 drives the flat material clamp 102 and the binding pull tube 204 to move precisely relative to the needle 101, thereby realizing the adjustment of the sewing material 901 and the binding tape relative to the sewing position.

[0054] Based on the above, see Appendix Figure 7 As shown, this application also discloses a sewing device 100, including a sewing table 109 and a needle 101 that moves relative to the sewing table 109. A guiding device for binding is mounted on the sewing table 109 via its own housing 290. As mentioned in the above technical solution, the flat material clamp 102 smooths the sewing material 901 and then conveys it upstream of the needle 101. As mentioned in the above technical solution, the binding puller 204 conveys binding tape upstream of the needle 101 and wraps it around the side edge of the sewing material 901. The binding is then achieved by the needle 101. During this process, the binding puller 204 and the flat material clamp 102 can move relative to the sewing table 109, the needle 101, and the sewing position to change the binding effect. Based on the detection of multiple detection windows, the binding length can be automatically controlled, thereby providing a sewing device with high continuous production efficiency, good binding effect, and high degree of automation control. Other parts of the sewing device 100 can be implemented in conjunction with existing technology, and will not be described in detail here.

[0055] The technical features of the above embodiments can be combined arbitrarily. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as the combination of these technical features does not contradict each other, it should be considered to be within the scope of this specification. When technical features of different embodiments are embodied in the same drawing, it can be regarded as the drawing also disclosing examples of combinations of the various embodiments involved.

[0056] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the scope of protection of this application. Therefore, the patent protection scope of this application should be determined by the appended claims.

Claims

1. A flat fabric clamp, used for mounting to sewing equipment and guiding the fabric, characterized in that, The flat fabric clamp has a relative front-to-back direction and two corresponding lateral directions. The flat fabric clamp defines a fabric channel for the fabric to pass through in the front-to-back direction. The flat fabric clamp includes: The top, located above the sewing material channel and used to smooth the sewing material, has a detection window for coupling detection signals with the sewing material; The bottom is connected to the top, the bottom is located below the sewing channel and provides a supporting surface for the sewing material, and at least one side of the sewing channel is provided with a connecting part that connects the top and / or the bottom. The flat clip is assembled to the sewing equipment through the connecting part.

2. The flat clamp according to claim 1, characterized in that, The flat clamp includes a body formed by bending a sheet material. The cross-section of the body is U-shaped, with the U-shaped opening facing one side. The upper part of the body is the top, and the lower part of the body is the bottom.

3. The flat clamp according to claim 2, characterized in that, The connecting part is connected to the body, and the connecting part extends away from the U-shaped opening of the body and forms a mounting part. The mounting part has a position adjustment hole that cooperates with the sewing equipment.

4. The flat clamp according to claim 1, characterized in that, The detection windows are independently provided in multiples and are arranged sequentially in the front-back direction.

5. The flat clamp according to claim 4, characterized in that, In the front-back direction, the connecting part is connected to the middle position of the top, and the detection windows are respectively located on both sides of the connecting part.

6. A flat material assembly, characterized in that, include: The flat clamp is the flat clamp as described in any one of claims 1 to 5; The first and second detectors work in conjunction with each detection window, respectively.

7. The flat material assembly according to claim 6, characterized in that, In the front-back direction, the first detector and the second detector are arranged sequentially.

8. A guiding device for edge binding, characterized in that, include: The flat clamp is the flat clamp as described in any one of claims 1 to 5; A binding pull tube provides a binding channel and is used to guide the binding fold to cover the side edge of the fabric; The adjusting mechanism is linked to the flat clamp and the binding pull tube, and they move synchronously relative to the sewing position.

9. The guiding device for edge binding according to claim 8, characterized in that, The exit directions of the edge binding channel and the sewing material channel intersect, and the intersection point is located downstream of the detection window in the front-back direction.

10. The guiding device for edge binding according to claim 8, characterized in that, The adjustment mechanism includes: An adjusting seat is provided, and the flat material clamp and the edge-binding pull tube are installed on the adjusting seat. A guide member, defining a sliding direction in the lateral direction, and the adjustment seat moving relative to the sewing position in that sliding direction; The drive assembly includes a rack connected to the adjustment seat and a drive motor that is driven to the rack; The drive motor is rotated in a controlled manner to drive the rack to move and cause the adjusting seat to move in a controlled manner relative to the sewing position in the sliding direction.

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