Sewing device

Abstract

Provided is a sewing device. Mainly solves the problem of insufficient sewing quality caused by height difference between a material clamping plate on a circulating plate and a working surface when a pocket opening machine (pocket patching machine) is used for sewing at present. The lifting boss (4) is provided with an ascending position protruding out of the upper end face of the working table plate and a descending position not protruding out of the upper end face of the working table plate; the boss is correspondingly arranged below the follow-up presser foot; and the through hole (41) is formed in the boss and is opposite to the machine needle. The sewing device is provided with the liftable boss, when the frame body is conveyed in, the boss descends, after the frame body is in place, the boss ascends to be matched with the follow-up presser foot for use, a firm base is provided for a sewing needle, the sewing device is particularly suitable for sewing thick materials or special cloth with high density, and the stability of the sewing process is guaranteed.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of sewing equipment, in particular to a sewing device. BACKGROUND

[0002] The bag attaching machine is a special sewing machine for sewing the bag opening of the garment.

[0003] As shown in the Chinese patent with publication number CN115387038A, the bag attaching machine includes bag folding, sewing and other mechanisms, and the cloth moves between these mechanisms with the frame. During the conventional sewing step, a through hole is usually provided on the base plate, and the cloth is placed on the clamping plate (the clamping plate is placed on the circulating plate) above the base plate, and there is a height difference between the base plate and the clamping plate. Due to the difference in height, problems such as broken thread and unattractive stitches may occur, especially when sewing narrow edges. SUMMARY

[0004] In order to overcome the deficiencies of the background art, the present application provides a sewing device, which mainly solves the problem of insufficient sewing quality caused by the height difference between the clamping plate on the circulating plate and the working surface during sewing on the bag opening machine (bag attaching machine).

[0005] The technical scheme of the present application is, A sewing device, comprising a workbench plate and a machine body, the machine body comprising a machine head, the machine head being provided with a follow-up presser foot and a needle, further comprising A liftable boss having a raised position protruding from the upper end surface of the workbench plate and a lowered position not protruding from the upper end surface of the workbench plate; the boss is correspondingly arranged below the follow-up presser foot; A through hole is provided on the boss and is oppositely arranged with the needle.

[0006] The machine body further comprises a machine base, the machine base being provided with a power source and a mounting plate lifted by the power source, and the boss is arranged on the mounting plate.

[0007] A bottom plate is mounted on the driving rod of the power source, and a support column is arranged on the bottom plate, and the top of the support column is provided with the mounting plate.

[0008] Further comprising a limiting block, the limiting block being correspondingly arranged above the bottom plate.

[0009] A cover plate is detachably connected to the workbench plate, and a guide groove is provided on the cover plate and penetrates through the mounting plate.

[0010] A fixed plate is arranged on the base, a rotating shuttle assembly is arranged below the fixed plate, and the mounting plate is arranged above the fixed plate.

[0011] The base is provided with a detachably connected connecting plate, and the power source and the limiting block are installed on the connecting plate.

[0012] The operation slot is further included, and one or more of the fixing plate, the power source, the bottom plate and the mounting plate are arranged in the operation slot when the cover plate is removed.

[0013] The lower plate detachably installed on the mounting plate is further included, and the boss is arranged on the upper end surface of the lower plate.

[0014] The sewing device provided by the application has the advantages that the sewing device has a liftable boss, which is lowered when a frame body is conveyed in and is raised after the frame body is in place to be matched with a follow-up presser foot for use, thereby providing a firm base for a sewing needle and being particularly suitable for sewing thick materials or special materials with high density, and the stability of the sewing process is ensured. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a partial explosion schematic view of an embodiment of the application.

[0016] Figure 2 It is a three-dimensional schematic view of an embodiment of the application.

[0017] Figure 3 It is a three-dimensional schematic view of an embodiment of the application.

[0018] Figure 4 It is a three-dimensional schematic view of an embodiment of the application.

[0019] Figure 5 It is a three-dimensional schematic view of an embodiment of the application.

[0020] Figure 6 It is a partial three-dimensional schematic view of an embodiment of the application. DETAILED DESCRIPTION

[0021] The application will be further described below with reference to the drawings. A sewing device includes a workbench plate 1 and a machine body 2. The machine body includes a machine head 3, the machine head is provided with a follow-up presser foot 31 and a machine needle 32, and the sewing device further includes a liftable boss 4, which has a raised position protruding from the upper end surface of the workbench plate and a lowered position not protruding from the upper end surface of the workbench plate. The boss is arranged below the follow-up presser foot in correspondence. A through hole 41 is arranged on the boss and is arranged opposite to the machine needle. The liftable boss provides stable support for special sewing positions, cooperates with the follow-up presser foot, effectively prevents wire skipping and needle breaking, and ensures uniform and beautiful stitches. The liftable boss is lowered when a frame body is conveyed in and is raised after the frame body is in place to be matched with the follow-up presser foot for use, thereby providing a firm base for the sewing needle and being particularly suitable for sewing thick materials or fluffy materials, and the stability of the sewing process is ensured.

[0022] The boss can also be driven by other means besides the cylinder mentioned in this article, such as Linear motor: directly connect the mover (primary) of the linear motor to the mounting plate, and fix the stator (secondary) on the base. After electrification, the mover directly generates linear motion to drive the boss up and down.

[0023] Stepping motor / servo motor + ball screw: Implementation: The servo motor or stepping motor drives a precision ball screw through a shaft coupling. The nut on the screw moves up and down, driving the mounting plate up and down.

[0024] Stepping / servo motor + synchronous belt / gear rack: The motor drives the synchronous pulley or gear, and through the synchronous belt or rack, it converts the rotary motion into linear motion to drive the mounting plate up and down, etc.

[0025] In this embodiment, as shown in the figure, the machine body also includes a base 5, on which a power source 51 and a mounting plate 52 driven by the power source are installed, and the boss is provided on the mounting plate. The power source is preferably a cylinder or an electric push rod, which provides power for the boss to rise and fall. Using a cylinder has the advantages of fast speed, simple structure, low cost, and mature technology.

[0026] In this embodiment, as shown in the figure, a bottom plate 53 is installed on the driving rod of the power source, and a support column 54 is provided on the bottom plate, and the top of the support column is provided with the mounting plate. This structure forms a stable transmission chain and smoothly transmits the driving force of the power source to the mounting plate.

[0027] In this embodiment, as shown in the figure, it also includes a limiting block 55, which is correspondingly provided above the bottom plate. In order to ensure the accuracy of the lifting stroke, a limiting block is also included, which is correspondingly provided above the bottom plate, for limiting the upper limit position of the bottom plate and the mounting plate.

[0028] In this embodiment, as shown in the figure, a detachable cover plate 6 is provided on the workbench plate, and a guide groove 61 is provided on the cover plate and corresponds to the mounting plate. In order to facilitate maintenance and adjustment, a detachable cover plate is provided on the workbench plate, and a guide groove is provided on the cover plate and corresponds to the mounting plate. The guide groove can ensure that the mounting plate remains stable during lifting and does not deflect.

[0029] In the embodiment, as shown in the figure, the base is provided with a fixed plate 56, the fixed plate is provided below with a rotating hook assembly 561, and the mounting plate is arranged above the fixed plate. This structure integrates the lifting mechanism of the boss and the core hook thread system (rotating hook) of the sewing machine in space, and the layout is compact. The through holes of all the through holes of the fixed plate are used for the needle to pass through.

[0030] In the embodiment, as shown in the figure, the base is provided with a detachably connected connecting plate 57, and the power source and the limiting block are mounted on the connecting plate. Specifically, the connecting plate can be disassembled and assembled through screws.

[0031] In the embodiment, as shown in the figure, the operation groove 7 is further included, which is exposed after the cover plate is removed, and one or more of the fixed plate, the power source, the bottom plate and the mounting plate are arranged in the operation groove. Through the design of the detachable cover plate (which can be disassembled and assembled through screws), the connecting plate and the operation groove, the installation, debugging and maintenance of the internal mechanism become very convenient.

[0032] In the embodiment, as shown in the figure, the lower plate 521 detachably mounted on the mounting plate is further included, and the boss is arranged on the upper end face of the lower plate. Specifically, the lower plate can be disassembled and assembled through screws.

[0033] The working principle of the present application is as follows: The working principle of the present application is based on an automatic cycle of "avoiding-positioning-working", specifically as follows: when it is necessary to sew the cloth fixed on the frame: avoidance stage boss descending: the power source 51 first drives the boss 4 to descend to its descending position, ensuring that the upper surface of the boss 4 does not protrude from the upper end face of the workbench plate 1. The purpose of this is to provide an unobstructed passage for the smooth movement and accurate positioning of the frame, preventing the boss from interfering or colliding with the frame. Positioning stage frame in place: after the boss 4 is lowered to the low position, the frame carrying the cloth can move smoothly and pass through the area above the boss 4 until it reaches the preset sewing processing position. Working stage boss rising and sewing: after the frame positioning is completed, the power source 51 acts, drives the mounting plate 52 and the boss 4 to rise together through the driving rod, the bottom plate 53 and the support 54, so that the boss 4 protrudes from the workbench surface, forming a stable sewing support platform. Then, the head 3 is started, the needle 32 cooperates with the rotating hook assembly 561, and the sewing operation is carried out under the cooperation of the follow-up presser foot 31. In this process, the boss 4 provides a firm support for the sewing area, effectively ensuring the sewing quality. Cycle ends: after the sewing is completed, the power source 51 retracts, driving the boss 4 to descend again, and the frame is separated from the frame, preparing for the removal of the frame or the entry of the next frame, thereby completing a working cycle. The guide groove 61 ensures that the boss 4 always remains vertical and stable during the lifting process without shaking; the limiting block 55 accurately controls the lifting stroke of the boss 4, ensuring that it can effectively support and not be excessively lifted.

[0034] In the description of the application, it should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the purpose of facilitating the description of the application and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application.

[0035] In addition, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, the meaning of "a plurality of" is two or more, unless otherwise specifically limited.

[0036] The embodiments described with reference to the drawings are exemplary and are intended to explain the application, and cannot be understood as a limitation on the application. The embodiments should not be considered as a limitation on the application, but any improvement made on the basis of the spirit of the application should be within the scope of protection of the application.

Claims

1. A sewing device comprising a worktable plate (1) and a machine body (2), the machine body comprising a machine head (3) provided with a follow-up presser foot (31) and a needle (32), characterized in that: Also include Liftable boss (4) with the upper end of the workbench plate protruding from the upper end of the workbench plate and the lower position of the upper end of the workbench plate; The boss is set below the follow-up presser foot; Through hole (41) is provided on the boss and is arranged opposite to the needle.

2. A sewing device according to claim 1, characterized in that: The machine body also includes a base (5), the base is provided with a power source (51) and a mounting plate (52) driven by the power source, the boss is provided on the mounting plate.

3. A sewing device according to claim 2, characterized in that: The driving rod of the power source is provided with a bottom plate (53), the bottom plate is provided with a support (54), and the top of the support is provided with the mounting plate.

4. A sewing device according to claim 3, characterized in that: Also include limit block (55), the limit block is set above the bottom plate.

5. A sewing device according to claim 1, characterized in that: The workbench plate is provided with a detachable cover plate (6), and the cover plate is provided with a through guide groove (61) matched with the mounting plate.

6. A sewing device according to claim 2, characterized in that: The base is provided with a fixed plate (56), and a rotating shuttle assembly (561) is arranged below the fixed plate, and the mounting plate is arranged above the fixed plate.

7. A sewing device according to claim 4, characterized in that: The base is provided with a detachable connecting plate (57), and the power source and the limit block are installed on the connecting plate.

8. A sewing device according to claim 5, characterized in that: Also include operation slot (7), when the cover plate is removed, one or more of the fixed plate, the power source, the bottom plate and the mounting plate are arranged in the operation slot.

9. A sewing device according to claim 2, characterized in that: Also include the lower plate (521) detachably installed on the mounting plate, and the boss is arranged on the upper end surface of the lower plate.

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