A type of edge-binding and edge-cutting sewing machine

Abstract

This utility model provides an overlock and trimming sewing machine, belonging to the field of sewing machine technology. It solves the technical problems of inconvenient installation of the overlock device in existing overlock and trimming sewing machines. This overlock and trimming sewing machine includes a table, a machine head, and an overlock device. A needle plate is fixed on the table, and a cutter is provided on the machine head, aligned with the inner edge of the needle plate. A fixing plate is located on the inner side of the needle plate on the table, and both the front and rear sides of the fixing plate are fixed to the table with screws. A bracket is fixed on the fixing plate, and the overlock device is mounted on the bracket. A notch is provided on the side of the fixing plate opposite to the cutter, and a feed hopper is fixedly installed on the table directly below the notch. This utility model has the advantages of convenient and secure installation of the overlock device.

Description

Technical Field

[0001] This utility model belongs to the field of sewing machine technology, and relates to a sewing machine, particularly an edge-binding and edge-cutting sewing machine. Background Technology

[0002] The edge-binding and trimming sewing machine is used for binding the edges of fabric. When using it, the fabric edge is first trimmed neatly with a cutter, and then the edge-binding device guides the rolled edge to the fabric edge for sewing.

[0003] In existing designs, the hemming device is directly mounted on the table via a bracket, such as the three-in-one sewing machine for cutting, hemming, and sewing disclosed in Chinese patent literature [application number 201520016469.4]. In this patent, the hemming device is directly fixed to the base plate that is integrated with the machine head. Since the machine head is equipped with structures such as needles and cutters, the hemming device is close to the cutter and needle during installation, which makes installation and operation inconvenient. Utility Model Content

[0004] The purpose of this utility model is to address the aforementioned problems in the existing technology by proposing an edge-binding and edge-cutting sewing machine. The technical problem solved by this utility model is to provide a new edge-binding device installation structure.

[0005] The objective of this utility model can be achieved through the following technical solutions:

[0006] An edge-binding and trimming sewing machine includes a table, a machine head, and an edge-binding device. A needle plate is fixed on the table, and a cutter is provided on the machine head. The cutter is aligned with the inner edge of the needle plate. The machine head is characterized in that a fixing plate is provided on the table inside the needle plate. The front and rear sides of the fixing plate are fixed to the table by screws. A bracket is fixed on the fixing plate, and the edge-binding device is mounted on the bracket. A notch is provided on the side of the fixing plate opposite to the cutter, and a discharge hopper is fixedly installed on the table directly below the notch.

[0007] In the aforementioned hemming and trimming sewing machine, the fixed plate has protrusions on both its front and rear sides, and the table plate has corresponding slots for the protrusions. The protrusions of the fixed plate engage with the corresponding slots. This structure improves the connection strength between the fixed plate and the table plate, making the hemming machine more stable during use.

[0008] In the aforementioned overlock and trimming sewing machine, the support frame is L-shaped. One end of the support frame is attached to the fixing plate and fixed to the fixing plate with screws. The other end of the support frame has a round hole and an arc-shaped hole. The round hole is relatively close to the needle plate. The overlock device is fixedly connected to the round hole and the arc-shaped hole with screws. Loosening the screws allows the overlock device to swing up and down a certain position around the round hole and along the arc-shaped hole, which can realize the position adjustment of the overlock device. After adjustment, tightening the screws will fix the position of the overlock device.

[0009] In the aforementioned overlock and trimming sewing machine, a strip-shaped hole is provided on the fixed plate directly below the overlocker. The strip-shaped hole serves to allow the overlocker to swing downwards to a certain position.

[0010] In the aforementioned edge-binding and trimming sewing machine, the upper end of the hopper is provided with an extension plate, and the table is provided with a fixing groove. The extension plate extends into the fixing groove, and a fixing hole is provided on the extension plate. The extension plate is fixed to the table by screws passing through the fixing hole. This structure achieves the fixation of the hopper and the table.

[0011] In the aforementioned edge-binding and trimming sewing machine, a pressure plate is also fixed to the worktable, pressing it firmly against the extension plate. The pressure plate increases the fixing strength of the discharge hopper, and the pressure plate is flush with the worktable, making the worktable surface flat overall.

[0012] In the aforementioned edge-binding and trimming sewing machine, a connecting ring is fixed to the lower side of the worktable, and the connecting ring is fitted onto the lower end of the discharge hopper. The connecting ring securely connects the lower end of the discharge hopper to the worktable, preventing the discharge hopper from shaking.

[0013] In the aforementioned edge-trimming sewing machine, the feed hopper includes a port section, an inclined section, and a straight section arranged sequentially. The port section has a forward-extending extension opening, and the inclined section is inclined relative to the port section. Both the front and rear side walls of the inclined section are vertical surfaces. The extension opening increases the coverage area of ​​the port on the feed hopper, and the inclined section avoids the transmission structure under the sewing machine table.

[0014] Compared with existing technologies, this edge-binding and trimming sewing machine has the following advantages:

[0015] 1. The binding tool can be fixed to the fixed plate first, adjusted into place, and then fixed to the table together with the fixed plate. It is easy to install and firmly fixed. The binding tool can withstand the binding of thicker hemming tape. The binding tool can also swing up and down to adapt to different sewing scenarios.

[0016] 2. The discharge hopper has a reasonable structure and is firmly fixed, reducing vibration and thus lowering noise. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of the edge-binding and edge-cutting sewing machine.

[0018] Figure 2 This is a three-dimensional structural diagram of the internal structure of this edge-binding and edge-cutting sewing machine.

[0019] Figure 3 This is a three-dimensional structural diagram of the edge banding device and the fixing plate.

[0020] Figure 4This is a three-dimensional structural diagram from another perspective when the edge banding device is fixed to the fixing plate.

[0021] Figure 5 This is a schematic diagram of the three-dimensional structure of the support.

[0022] Figure 6 This is a schematic diagram of the three-dimensional structure of the fixed plate.

[0023] Figure 7 This is a schematic diagram of the three-dimensional structure of the discharge hopper.

[0024] Figure 8 This is a front view structural diagram of the discharge hopper.

[0025] Figure 9 This is a schematic diagram of the left-hand structure of the discharge hopper.

[0026] In the diagram, 1. Platform; 11. Machine head; 12. Needle plate; 13. Cutter; 2. Edge binding device; 3. Fixing plate; 31. Protrusion; 32. Strip hole; 33. Notch; 4. Bracket; 41. Round hole; 42. Arc hole; 5. Discharge hopper; 51. Extension plate; 511. Fixing hole; 52. End section; 521. Extension opening; 53. Inclined section; 531. Vertical surface; 54. Straight section; 55. Connecting ring; 6. Pressure plate; 7. Screw. Detailed Implementation

[0027] The following are specific embodiments of the present invention, which are described in conjunction with the accompanying drawings. However, the present invention is not limited to these embodiments.

[0028] like Figures 1 to 6 As shown, the overlock and trimming sewing machine includes a table 1, a machine head 11, and an overlock device 2. The table 1 has an installation port located directly below the machine head 11. A needle plate 12 is fixed to the outside of the installation port. The machine head 11 has a cutter 13, which is aligned with the inner edge of the needle plate 12. The table 1 has a fixing plate 3 located inside the needle plate 12. The fixing plate 3 has protrusions 31 on both the front and rear sides. The table 1 has slots corresponding to the protrusions 31 on the front and rear edges of the installation port. The protrusions 31 of the fixing plate 3 are inserted into the corresponding slots. The protrusions 31 of the fixing plate 3 are fixed to the table 1 by screws 7. A bracket 4 is fixed on the fixing plate 3. The overlock device 2 is mounted on the bracket 4. The fixing plate 3 has a strip hole 32 located directly below the overlock device 2. Specifically, the bracket 4 is L-shaped. One end of the bracket 4 is attached to the fixing plate 3 and fixed to the fixing plate 3 by screws 7. The other end of the bracket 4 has a round hole 41 and an arc-shaped hole 42. The round hole 41 is relatively close to the needle plate 12. The binding device 2 is fixedly connected to the round hole 41 and the arc-shaped hole 42 by screws 7. Loosening the screws 7 allows the binding device 2 to swing up and down a certain position around the round hole 41 along the arc-shaped hole 42, which can realize the position adjustment of the binding device 2.

[0029] like Figures 7 to 9 As shown, the fixing plate 3 has a notch 33 on the side opposite to the cutter 13, and a discharge hopper 5 is fixedly installed on the platform 1 directly below the notch 33. The upper end of the discharge hopper 5 has an extension plate 51, and the platform 1 has a fixing groove. The extension plate 51 extends into the fixing groove, and a fixing hole 511 is opened on the extension plate 51. The extension plate 51 is fixed to the platform 1 by screws 7 passing through the fixing hole 511. A pressure plate 6 is also fixed on the platform 1, and the pressure plate 6 presses against the extension plate 51. A connecting ring 55 is fixed on the lower side of the platform 1. The connecting ring 55 is sleeved on the lower end of the discharge hopper 5, and the lower end of the discharge hopper 5 is fixedly connected to the platform 1 by the connecting ring 55.

[0030] The discharge hopper 5 includes a port section 52, an inclined section 53, and a straight section 54 arranged sequentially. The port section 52 has a forward-extending extension opening 521. The inclined section 53 is inclined relative to the port section 52, and both its front and rear side walls are vertical surfaces 531. The extension opening 521 can increase the area of ​​the upper port of the discharge hopper 5, and the inclined section 53 can avoid the transmission structure under the sewing machine table 1.

[0031] When in use, the edge binding device 2 can be fixed to the fixed plate 3 and adjusted into place before being fixed to the table 1 together with the fixed plate 3. The cutter 13 and the needle plate 12 work together to cut the fabric edge flat. The cutter 13 moves up and down through the drive structure in the machine head 11, and the cut waste material falls directly into the discharge hopper 5 for discharge.

[0032] The specific embodiments described herein are merely illustrative examples illustrating the spirit of this utility model. Those skilled in the art to which this utility model pertains may make various modifications or additions to the described specific embodiments or use similar methods to substitute them, without departing from the spirit of this utility model or exceeding the scope defined by the appended claims.

Claims

1. A binding and trimming sewing machine, comprising a table (1), a sewing head (11), and a binding device (2), wherein a needle plate (12) is fixed on the table (1), and a cutter (13) is provided on the sewing head (11), the cutter (13) being aligned with the inner edge of the needle plate (12), characterized in that, A fixing plate (3) is provided on the inner side of the needle plate (12) on the platform (1). The front and rear sides of the fixing plate (3) are fixed to the platform (1) by screws (7). A bracket (4) is fixed on the fixing plate (3). The edge banding device (2) is installed on the bracket (4). A notch (33) is provided on the side of the fixing plate (3) opposite to the cutter (13). A discharge hopper (5) is fixedly installed on the platform (1) directly below the notch (33).

2. The edge-binding and edge-cutting sewing machine according to claim 1, characterized in that, The fixing plate (3) has protrusions (31) on both the front and rear sides, and the platform (1) has a slot corresponding to the protrusions (31). The protrusions (31) of the fixing plate (3) are inserted into the corresponding slots.

3. The edge-binding and edge-cutting sewing machine according to claim 1, characterized in that, The fixing plate (3) has a strip hole (32) located directly below the edge banding device (2).

4. The edge-binding and edge-cutting sewing machine according to claim 1, 2, or 3, characterized in that, The bracket (4) is L-shaped. One end of the bracket (4) is attached to the fixing plate (3) and fixed to the fixing plate (3) by screws (7). The other end of the bracket (4) has a round hole (41) and an arc-shaped hole (42). The round hole (41) is relatively close to the needle plate (12). The edge banding device (2) is fixedly connected to the round hole (41) and the arc-shaped hole (42) by screws (7).

5. The edge-binding and edge-cutting sewing machine according to claim 1, 2, or 3, characterized in that, The upper end of the discharge hopper (5) is provided with an extension plate (51), the platform (1) is provided with a fixing groove, the extension plate (51) extends into the fixing groove, the extension plate (51) is provided with a fixing hole (511), and the extension plate (51) is fixed to the platform (1) by a screw (7) passing through the fixing hole (511).

6. The edge-binding and edge-cutting sewing machine according to claim 5, characterized in that, A pressure plate (6) is also fixed on the platform (1), and the pressure plate (6) presses against the extension plate (51).

7. The edge-binding and edge-cutting sewing machine according to claim 5, characterized in that, A connecting ring (55) is fixed to the lower side of the platform (1), and the connecting ring (55) is sleeved on the lower end of the discharge hopper (5).

8. The edge-binding and edge-cutting sewing machine according to claim 5, characterized in that, The discharge hopper (5) includes a port section (52), an inclined section (53) and a straight section (54) arranged in sequence. The port section (52) is provided with an extension opening (521) extending forward. The inclined section (53) is inclined relative to the port section (52). The front and rear side walls of the inclined section (53) are both vertical surfaces (531).

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