Double-layer asymmetric hemming folder

Abstract

A double-layer asymmetric hemming folder comprises a bottom plate, a hemming folder body and a folding mechanism, the folding mechanism is arranged in the middle of the edge of the front side of the bottom plate, the hemming folder body is arranged on the right portion of the edge of the front side of the bottom plate, and the output end of the hemming folder body is connected with the input end of the folding mechanism. A cloth belt output from the output end of the hemming folder enters the folding mechanism from the input end of the folding mechanism and is output from the output end of the folding mechanism, and the output end of the folding mechanism is an output port extending forwards. The upper and lower double-layer asymmetric hemming device can realize upper and lower double-layer asymmetric hemming work on the edge of the fabric, and is matched with sewing equipment to realize upper and lower double-layer asymmetric automatic hemming and covering work on the edge of the fabric.

Description

Technical Field

[0001] The utility model relates to the field of accessories for garment processing, in particular to a double-layer asymmetric curling pull tube. Background Art

[0002] In the current processing of clothing and textiles, it is often necessary to hem the edges of fabrics. The forms of hemming are also varied, including single-layer hemming, upper and lower double-layer hemming, upper and lower double-layer hemming in a symmetrical shape, and asymmetrical shape. Some hemming has its own edge and does not need to be hemmed, and some hemming is a strip of cloth that needs to be hemmed. In the past hemming process, hemming was usually done manually, with low production efficiency and poor consistency of hemming, which affected production quality. With the changes in production and processing, some hemming pullers have gradually emerged, which can assist sewing work and realize automatic hemming. However, in the existing production process, there is a lack of hemming pullers for performing upper and lower double-layer asymmetrical hemming on fabrics, and manual hemming sewing is still required, which has low production efficiency and cannot guarantee production quality. Therefore, it is urgent to develop a hemming puller that can assist sewing equipment in performing upper and lower double-layer asymmetrical hemming on fabrics. Summary of the invention

[0003] In order to solve the above problems, the utility model provides a double-layer asymmetric curling pull tube.

[0004] The technical solution of the utility model is: a double-layer asymmetric curling pull tube, including a base plate, a curling pull tube, and a folding mechanism, wherein the folding mechanism is arranged in the middle of the front edge of the base plate, and the curling pull tube is arranged at the right part of the front edge of the base plate, and the output end of the curling pull tube is connected with the input end of the folding mechanism, and the cloth tape output from the output end of the curling pull tube enters the folding mechanism from the input end of the folding mechanism and is output from the output end of the folding mechanism, and the output end of the folding mechanism is an output port extending forward.

[0005] Preferably, the folding mechanism includes a flat opening guide, the cross-section of which is a horizontal U-shape, the opening guide includes an upper guide piece, a lower guide piece and an intermediate transition piece, the width of the upper guide piece is narrower than that of the lower guide piece, and the right side edge of the upper guide piece and the right side edge of the lower guide piece are connected by the intermediate transition piece; the curling pull tube includes an upper cover piece and a curling piece, the cross-section of the curling piece is in a "W" shape, and the cross-section of the upper cover piece is in a "U" shape, the upper cover piece and the curling piece are arranged to be inserted into each other, the upper cover piece and the edge of the curling piece are fixedly connected, and a gap is formed between the two for the cloth tape to pass through.

[0006] As a further preferred embodiment, the curling pull tube is arranged sideways, that is, the curling piece is arranged sideways, the upper cover piece is also arranged sideways, the center of the upper cover piece is connected to the bottom plate, one side of the upper cover piece is located below the bottom plate, and one side is located above the bottom plate, the curling piece is arranged on the front side of the upper cover piece, and also one side of the curling piece is located below the bottom plate, and one side is located above the bottom plate.

[0007] As further preferred, the curling piece includes a first curling wall, a second curling wall, a third curling wall, a fourth curling wall, a first connecting piece, a second connecting piece and a third connecting piece. The first curling wall, the second curling wall, the third curling wall and the fourth curling wall are arranged in sequence from top to bottom, and there is a gap between them. The upper edge and lower edge of the first connecting piece are respectively connected to the front side of the first curling wall and the front side of the second curling wall, the upper edge and lower edge of the second connecting piece are respectively connected to the rear side of the second curling wall and the rear side of the third curling wall, and the upper edge and lower edge of the third connecting piece are respectively connected to the front side of the third curling wall and the front side of the first curling wall. The front side of the four curling walls; the upper cover includes a first insert piece, a second insert piece and a connecting cover piece, the first insert piece is arranged between the first curling wall and the second curling wall, and does not touch the first connecting piece, the second insert piece is arranged between the third curling wall and the fourth curling wall, and does not touch the third connecting piece, the rear edge of the first insert piece and the rear edge of the second insert piece are connected through the upper and lower edges of the connecting cover piece; the rear edge of the first curling wall and the rear edge of the fourth curling wall are rolled up to the middle and fixed on the upper cover piece; the opening guide is arranged at the output end of the curling pull cylinder and at the outlet center of the curling piece.

[0008] As a further preferred embodiment, the middle transition piece of the opening guide is consistent with the curvature of the second connecting piece, the middle transition piece is attached to the front part of the second connecting piece, and the upper guide piece and the lower guide piece are respectively attached to the lower side surface of the second curling wall and the upper side surface of the third curling wall and extend forward.

[0009] As a further preferred embodiment, the input end to the output end of the curling puller are overall trumpet-shaped, the input end of the curling puller is wide, and the output end of the curling puller is narrow, the input end of the curling puller is provided with an S-bend cloth guide frame, and the upper cover plate is provided with a cloth guide groove.

[0010] As further preferred, the length of the second insertion piece is equal to or longer than the length of the first insertion piece.

[0011] As a further preferred embodiment, the output port of the folding mechanism is arranged forward, and the front end of the middle transition piece is provided with a resting edge extending forward, the resting edge and the output port form a notch, when the double-layer asymmetric curling pull cylinder is fixed on the sewing equipment, the presser foot of the sewing equipment is arranged at the notch, the output end of the folding mechanism rests on the inlet end of the presser foot, and the resting edge rests on the side of the presser foot; the left edge of the upper guide piece extends downward in an arc shape, and the lower guide piece is straight.

[0012] As a further preference, a guide slope is provided above the bottom plate, the guide slope is arched upward, and the front edge of the guide slope transitions to the curling pull tube and folding mechanism; the inlet end of the opening guide is inclined, and an input gap is provided between the inlet end and the guide slope.

[0013] Preferably, a mounting plate is provided below the bottom plate, and an adjustable fixing groove is provided on one side of the mounting plate away from the hemming pull cylinder.

[0014] The beneficial effects of the utility model are as follows: the utility model can realize the work of upper and lower double-layer asymmetric curling of the edge of the fabric, and cooperate with the sewing equipment to realize the work of upper and lower double-layer asymmetric automatic curling and hemming of the edge of the fabric. The cloth strip is fed from the S-bend guide strip to form a cloth belt with a "W" cross section. After passing through the folding mechanism, the two sides of the cloth belt are turned inward to form the edge hemming of the fabric. After passing through the sewing equipment, the double needle sewing can complete the hemming work, and the hemming is smooth, the production quality is good, and the production efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a three-dimensional structural schematic diagram of the utility model observed from the upper rear side.

[0016] Figure 2 It is a three-dimensional structural schematic diagram of the utility model observed from the bottom.

[0017] Figure 3 It is a partial three-dimensional structural schematic diagram of the output end of the curling pull tube of the utility model.

[0018] Figure 4 It is a schematic diagram of the cross-sectional structure of the curling pull tube of the utility model.

[0019] Figure 5 It is a schematic diagram of the cross-sectional structure of the hemming after processing of the utility model.

[0020] Description of symbols

[0021] 1: bottom plate; 2: mounting plate; 3: adjustable fixing groove; 4: cloth guide groove; 5: S-bend cloth guide frame; 6: cloth belt; 7: hemming pull tube; 71: upper cover plate; 72: hemming plate; 73: input end of hemming pull tube; 74: output end of hemming pull tube; 711: first insert plate; 712: connecting cover plate; 713: second insert plate; 721: first hemming wall; 722: first connecting plate; 723: second hemming wall; 7 24: second connecting piece; 725: third rolled edge wall; 726: third connecting piece; 727: fourth rolled edge wall; 8: folding mechanism; 9: guide slope; 10: opening guide; 101: upper guide piece; 102: middle transition piece; 103: lower guide piece; 104: abutting edge; 11: input seam; 12: hemmed cloth; 13: sewing thread; 14: cloth strip; 141: upper hemming; 142: lower hemming. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0023] A double-layer asymmetric curling pull tube comprises a base plate 1, a curling pull tube 7, and a folding mechanism 8. The folding mechanism 8 is arranged in the middle of the front edge of the base plate 1, and the curling pull tube 7 is arranged in the right part of the front edge of the base plate 1. The output end 74 of the curling pull tube is connected with the input end of the folding mechanism 8. The cloth tape 6 output from the output end 74 of the curling pull tube enters the folding mechanism 8 from the input end of the folding mechanism 8 and is output from the output end of the folding mechanism 8. The output end of the folding mechanism 8 is an output port extending forward.

[0024] In this embodiment, the folding mechanism 8 includes a flat opening guide 10, the cross-section of which is a horizontal U-shape, and the opening guide 10 includes an upper guide piece 101, a lower guide piece 103 and an intermediate transition piece 102, the width of the upper guide piece 101 is narrower than the width of the lower guide piece 103, and the right side edge of the upper guide piece 101 and the right side edge of the lower guide piece 103 are connected by the intermediate transition piece 102; the curling pull tube 7 includes an upper cover piece 71 and a curling piece 72, the cross-section of the curling piece 72 is in a "W" shape, and the cross-section of the upper cover piece 71 is in a "U" shape, the upper cover piece 71 and the curling piece 72 are inserted into each other, and the edges of the upper cover piece 71 and the curling piece 72 are fixedly connected, and a gap is formed between the two for the cloth belt 6 to pass through.

[0025] In this embodiment, the hemming pull tube 7 is arranged sideways, that is, the hemming piece 72 is arranged sideways, the upper cover piece 71 is also arranged sideways, the center of the upper cover piece 71 is connected to the bottom plate 1, one side of the upper cover piece 71 is located below the bottom plate 1, and one side is located above the bottom plate 1, and the hemming piece 72 is arranged on the front side of the upper cover piece 71, and one side of the hemming piece 72 is also located below the bottom plate 1, and one side is located above the bottom plate 1. The sideways structure allows the output end 74 of the hemming pull tube to output a horizontally lying cloth strip 14 with a W-shaped cross section.

[0026] In this embodiment, the curling piece 72 includes a first curling wall 721, a second curling wall 723, a third curling wall 725, a fourth curling wall 727, a first connecting piece 722, a second connecting piece 724 and a third connecting piece 726. The first curling wall 721, the second curling wall 723, the third curling wall 725 and the fourth curling wall 727 are arranged in sequence from top to bottom, and there is a gap between them. The upper edge and the lower edge of the first connecting piece 722 are respectively connected to the front side of the first curling wall 721 and the front side of the second curling wall 723, the upper edge and the lower edge of the second connecting piece 724 are respectively connected to the rear side of the second curling wall 723 and the rear side of the third curling wall 725, and the upper edge and the lower edge of the third connecting piece 726 are respectively connected to the front side of the third curling wall 725 and the fourth curling wall The front side of the wall 727; the upper cover 71 includes a first insert piece 711, a second insert piece 713 and a connecting cover piece 712, the first insert piece 711 is arranged between the first curling wall 721 and the second curling wall 723, and does not touch the first connecting piece 722, the second insert piece 713 is arranged between the third curling wall 725 and the fourth curling wall 727, and does not touch the third connecting piece 726, the rear edge of the first insert piece 711 and the rear edge of the second insert piece 713 are connected by the upper and lower edges of the connecting cover piece 712; the rear edge of the first curling wall 721 and the rear edge of the fourth curling wall 727 are rolled up to the middle and fixed on the upper cover 71; the opening guide 10 is arranged at the output end 74 of the curling pull tube, and is arranged at the outlet center of the curling piece 72.

[0027] In this embodiment, the middle transition piece 102 of the opening guide 10 has the same curvature as the second connecting piece 724, and the middle transition piece 102 is attached to the front of the second connecting piece 724. The upper guide piece 101 and the lower guide piece 103 are attached to the lower side of the second curling wall 723 and the upper side of the third curling wall 725 respectively and extend forward. The upper guide piece 101 and the lower guide piece 103 are provided to make the curled cloth strip 14 and the upper and lower surfaces of the edge of the wrapped cloth 12 close to each other without spreading, and feed them to the presser foot of the sewing equipment.

[0028] In this embodiment, the input end 73 of the curling puller to the output end 74 of the curling puller are generally trumpet-shaped, the input end 73 of the curling puller is wide, and the output end 74 of the curling puller is narrow, the input end 73 of the curling puller is provided with an S-bend cloth guide frame 5, and the upper cover plate 71 is provided with a cloth guide groove 4.

[0029] In this embodiment, the length of the second insert piece 713 is equal to or longer than the length of the first insert piece 711. This structure allows the final hemming to be formed with a longer lower portion and a shorter upper portion, thereby forming an asymmetric structure. Figure 5 shown.

[0030] In this embodiment, the output port of the folding mechanism 8 is arranged forward, and the front end of the intermediate transition piece 102 is provided with a forwardly extending abutting edge 104, which forms a gap with the output port. When the double-layer asymmetric hemming pull cylinder is fixed on the sewing device, the presser foot of the sewing device is arranged at the gap, and the output end of the folding mechanism 8 abuts against the inlet end of the presser foot, and the abutting edge 104 abuts against the side of the presser foot; the left edge of the upper guide piece 101 extends downward in an arc shape, and the lower guide piece 103 is straight. This structure can well maintain the shape of the hemming, allowing the sewing device to sew the hemming and the fabric together smoothly.

[0031] In this embodiment, a guide slope 9 is provided above the base plate 1. The guide slope 9 is arched upward, and the front edge of the guide slope 9 transitions to the curling pull tube 7 and the folding mechanism 8. Due to the thickness of the fabric, a guide slope 9 is provided here to provide space for the fabric below to avoid the situation where the fabric is too thick to pass through after being folded; the entrance end of the opening guide 10 is inclined, and an input seam 11 is provided between the entrance end and the guide slope 9. The fabric with completed curling needs to be folded, and the fabric below the base plate 1 needs to be folded upward from the input seam and enter the opening guide 10.

[0032] In this embodiment, a mounting plate 2 is provided below the bottom plate 1 , and an adjustable fixing groove 3 is provided on one side of the mounting plate 2 away from the curling pull tube 7 .

[0033] Working principle: The device can be installed on a sewing device, using double needle sewing, and the position of the entire device can be adjusted by adjusting the installation position of the fixing slot 3. After installation, the presser foot of the sewing device is set at the notch of the folding mechanism 8, the output end of the folding mechanism 8 abuts against the inlet end of the presser foot, and the abutting edge 104 abuts against the side of the presser foot. When the double needles of the sewing device fall, they are respectively located on the upper hemming 141 and the lower hemming 142, as shown in FIG. Figure 5As shown. The cloth tape 6 to be processed is clamped by the S-bend cloth guide 5 and fed to the input end 73 of the hemming pull tube. Through the cloth guide groove 4 of the upper cover plate 71, the cloth tape 6 is clamped with tweezers and sent to the output end 74 of the hemming pull tube. The cross-section of the cloth tape 6 is a horizontal "W" shape when it is output here. Then the cloth tape 6 is folded toward the middle and sent to the folding mechanism 8, and the upper hemming 141 and the lower hemming 142 are respectively placed between the upper guide plate 101 and the lower guide plate 103 of the opening guide 10. The cloth 12 to be hemmed is placed in the opening guide 10 and clamped between the upper hemming 141 and the lower hemming 142. Pressing the presser foot tightly can realize the sewing hemming work. The cross-section of the fabric after hemming is as shown in the figure. Figure 5 As shown, the double-layer asymmetric hemming work is completed. The device can realize automatic input of the cloth belt 6 after installation and direct output of the finished product, with high qualified rate of the products and high production efficiency.

[0034] In the description of the utility model specification, it is necessary to understand that the terms "middle", "right", "output end", "center", "above", "below", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the utility model and simplifying the description, rather than indicating or implying that the device or module referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model.

[0035] In the present invention, unless otherwise clearly specified and limited, the term "connection" and other terms should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. A double-layer asymmetric curling pull tube, characterized in that The invention comprises a bottom plate (1), a curling pull tube (7), and a folding mechanism (8), wherein the folding mechanism (8) is arranged at the middle part of the front edge of the bottom plate (1), the curling pull tube (7) is arranged at the right part of the front edge of the bottom plate (1), the output end (74) of the curling pull tube is connected with the input end of the folding mechanism (8), the cloth tape (6) output from the output end (74) of the curling pull tube enters the folding mechanism (8) from the input end of the folding mechanism (8), and is output from the output end of the folding mechanism (8), and the output end of the folding mechanism (8) is an output port extending forward.

2. The double-layer asymmetric curling pull tube according to claim 1, characterized in that The folding mechanism (8) comprises a flat opening guide (10), the cross section of which is a horizontal U-shape. The opening guide (10) comprises an upper guide piece (101), a lower guide piece (103) and an intermediate transition piece (102). The width of the upper guide piece (101) is narrower than that of the lower guide piece (103). The right side of the upper guide piece (101) and the right side of the lower guide piece (103) are connected via the intermediate transition piece (102). The curling pull tube (7) comprises an upper cover piece (71) and a curling piece (72). The cross section of the curling piece (72) is in the shape of a letter "W". The cross section of the upper cover piece (71) is in the shape of a letter "U". The upper cover piece (71) and the curling piece (72) are arranged to be inserted into each other. The edges of the upper cover piece (71) and the curling piece (72) are fixedly connected, and a gap is formed between the two for the cloth belt (6) to pass through.

3. The double-layer asymmetric curling pull tube according to claim 2, characterized in that The curling pull tube (7) is arranged in a side-standing shape, that is, the curling piece (72) is arranged sideways, and the upper cover piece (71) is also arranged sideways. The center of the upper cover piece (71) is connected to the bottom plate (1), one side of the upper cover piece (71) is located below the bottom plate (1), and one side is located above the bottom plate (1). The curling piece (72) is arranged on the front side of the upper cover piece (71), and one side of the curling piece (72) is also located below the bottom plate (1), and one side is located above the bottom plate (1).

4. The double-layer asymmetric curling pull tube according to claim 3, characterized in that The curling sheet (72) includes a first curling wall (721), a second curling wall (723), a third curling wall (725), a fourth curling wall (727), a first connecting sheet (722), a second connecting sheet (724) and a third connecting sheet (726). The first curling wall (721), the second curling wall (723), the third curling wall (725) and the fourth curling wall (727) are arranged in sequence from top to bottom and have gaps between them. The first connecting sheet (722) is connected to the second curling wall (724) and the third connecting sheet (726). The upper edge and lower edge of the sheet (722) are respectively connected to the front side of the first curling wall (721) and the front side of the second curling wall (723); the upper edge and lower edge of the second connecting sheet (724) are respectively connected to the rear side of the second curling wall (723) and the rear side of the third curling wall (725); the upper edge and lower edge of the third connecting sheet (726) are respectively connected to the front side of the third curling wall (725) and the rear side of the fourth curling wall (727); ) front side; the upper cover sheet (71) includes a first insert sheet (711), a second insert sheet (713) and a connecting cover sheet (712), the first insert sheet (711) is arranged between the first curling wall (721) and the second curling wall (723) and does not touch the first connecting sheet (722), the second insert sheet (713) is arranged between the third curling wall (725) and the fourth curling wall (727) and does not touch the third connecting sheet (726 ), the rear edge of the first insertion piece (711) and the rear edge of the second insertion piece (713) are connected by the upper and lower edges of the connecting cover piece (712); the rear edge of the first curling wall (721) and the rear edge of the fourth curling wall (727) are rolled up to the middle and fixed on the upper cover piece (71); the opening guide (10) is arranged at the output end (74) of the curling pull tube and at the outlet center of the curling piece (72).

5. The double-layer asymmetric curling pull tube according to claim 4, characterized in that The middle transition piece (102) of the opening guide (10) has the same curvature as the second connecting piece (724), and the middle transition piece (102) is attached to the front of the second connecting piece (724). The upper guide piece (101) and the lower guide piece (103) are respectively attached to the lower side surface of the second curling wall (723) and the upper side surface of the third curling wall (725) and extend forward.

6. A double-layer asymmetric curling pull tube according to any one of claims 2 to 5, characterized in that The input end (73) of the hemming pull cylinder to the output end (74) of the hemming pull cylinder are generally trumpet-shaped, the input end (73) of the hemming pull cylinder is wide, and the output end (74) of the hemming pull cylinder is narrow, the input end (73) of the hemming pull cylinder is provided with an S-bend cloth guide frame (5), and the upper cover plate (71) is provided with a cloth guide groove (4).

7. The double-layer asymmetric curling pull tube according to claim 4, characterized in that The length of the second insertion piece (713) is equal to or longer than the length of the first insertion piece (711).

8. A double-layer asymmetric curling pull tube according to any one of claims 2 to 5, characterized in that The output port of the folding mechanism (8) is arranged forward, and the front end of the middle transition piece (102) is provided with a forward extending abutting edge (104), the abutting edge (104) and the output port form a gap. When a double-layer asymmetric curling pull cylinder is fixed on a sewing device, the presser foot of the sewing device is arranged at the gap, the output end of the folding mechanism (8) abuts against the inlet end of the presser foot, and the abutting edge (104) abuts against the side of the presser foot; the left edge of the upper guide piece (101) extends downward in an arc shape, and the lower guide piece (103) is straight.

9. A double-layer asymmetric curling pull tube according to any one of claims 2 to 5, characterized in that A guide slope (9) is provided above the bottom plate (1), the guide slope (9) is arched upward, and the front edge of the guide slope (9) transitions to the curling pull tube (7) and the folding mechanism (8); the inlet end of the opening guide (10) is inclined, and an input gap (11) is provided between the inlet end and the guide slope (9).

10. The double-layer asymmetric curling pull tube according to claim 1, characterized in that A mounting plate (2) is provided below the bottom plate (1), and an adjustable fixing groove (3) is provided on one side of the mounting plate (2) away from the hemming pull tube (7).

Images