Bag sewing thread thermal cutting-off device for industrial bag sewing machine

Abstract

The utility model discloses a bag sewing thread thermal cutting-off device for an industrial bag sewing machine, belongs to the technical field of industrial bag sewing machinery, and aims to solve the problems that an existing bag sewing thread cutting-off device for the bag sewing machine is low in working efficiency, poor in thread cutting quality and not suitable for high-efficiency bag sewing thread cutting-off work of a packaging production line. A bag sewing thread thermal cutting device connected to an industrial bag sewing machine body is composed of an air cylinder connecting plate, an air cylinder, an electric heating thread cutter, a heat insulation plate, an electric heating cutter base and an electric heating cutter base plate, the electric heating thread cutter connected with the heat insulation plate in a clamping mode is fixed to the bottom of the air cylinder through connecting screws, and the air cylinder is connected with the air cylinder connecting plate through screws. The air cylinder connecting plate, the air cylinder, the heat insulation plate and the electric heating thread cutter are connected to the bag sewing machine body together through fastening screws, the electric heating cutter base plate is fixed to the electric heating cutter base through screws, and the electric heating cutter base and the electric heating cutter base plate are fixed to the bag sewing machine body base together. The device is practical in structure and suitable for being assembled with an industrial bag-sewing machine and used for cutting and fusing the bag-sewing threads.

Description

Technical Field

[0001] This utility model belongs to the field of industrial sewing machinery technology and relates to a cutting device for sewing thread used in sewing machines. Background Technology

[0002] As one of the main pieces of equipment on packaging production lines, industrial bag sewing machines, particularly their thread cutting devices, are crucial components widely used in the sewing and sealing of bagged products such as agricultural products, chemicals, building materials, and minerals. These devices directly affect the sewing and sealing effect and quality of the product packaging bags. In existing technologies, the thread cutting devices of industrial bag sewing machines primarily employ mechanical blade cutting mechanisms and devices mounted on the machine body for mechanical thread cutting. However, limited by the blade's movement speed and the physical characteristics of the sewing thread, this method struggles to meet the high-efficiency thread cutting demands of high-frequency operation on packaging production lines. The cutting efficiency is incompatible with these limitations, and the cutting blades are prone to wear during long-term operation. Increased thread tension and friction worsen the contact between the blade and the thread, potentially leading to incomplete cutting and reduced cutting efficiency. This results in thread residue, requiring regular maintenance and replacement, increasing downtime and labor costs, potentially causing production line stoppages and disrupting normal operations. For example, Chinese Patent Publication No. CN213198995U discloses a technical solution for a sewing machine with automatic cutting function. It employs a sewing machine head fixedly installed on the rear inner wall of the sewing machine body, a motor fixedly installed on one side of the machine body, a worm gear fixedly connected to the output shaft of the motor, and the other end of the worm gear extending into the sewing machine body. A worm wheel is rotatably installed on the rear inner wall of the sewing machine body, meshing with the worm. A round shaft is fixedly welded to the front side of the worm wheel, and a cutting blade is fixedly installed at the bottom of a sliding frame that is movably sleeved on the outer side of the round shaft. However, due to its structural limitations, since the automatic cutting function of the sewing thread is achieved by fixing the cutting blade to the sewing machine body, it can be inferred that when this sewing machine is installed in a packaging production line for sewing and sealing product packaging bags, the cutting blade will suffer from low efficiency and poor cutting quality during long-term operation.

[0003] In view of this, in order to adapt to the continuous improvement and development of the automation and intelligence level of industrial bag sewing machinery, it is necessary to further improve and develop a new type of sewing thread cutting device for industrial bag sealing machines. Utility Model Content

[0004] To overcome the shortcomings of existing technologies and address the problems of low efficiency, poor cutting quality, and unsuitability for high-efficiency cutting of sewing thread in packaging production lines caused by the limited structure of current sewing thread cutting devices for bag sewing machines, this utility model aims to provide a novel and practical sewing thread cutting device for industrial bag sewing machinery in packaging production lines. This device offers high efficiency, is suitable for sealing bags with different types of sewing thread, and allows for simultaneous cutting and sealing, while ensuring safe and convenient operation.

[0005] The technical solution adopted by this utility model to solve the above problems is:

[0006] A hot-cutting device for sewing thread in an industrial bag sewing machine comprises a cylinder connecting plate, a cylinder, an electric heating thread cutter, a heat insulation plate, an electric heating cutter base, and an electric heating cutter pad. The bottom of the cylinder is fixed with connecting screws to the electric heating thread cutter, which clamps the heat insulation plate. The cylinder is connected to the cylinder connecting plate via cylinder connecting screws. The cylinder connecting plate, along with the cylinder, heat insulation plate, and electric heating thread cutter, is fixed to the recessed seat of the machine housing of the bag sewing machine body via fastening screws. The electric heating cutter pad is fixed to the electric heating cutter base by screws. The electric heating cutter base and the electric heating cutter pad are fixed to the base of the bag sewing machine body via through screws.

[0007] The above-mentioned industrial sewing machine uses a hot cutting device for sewing thread, wherein the back of the cylinder is connected to a cylinder clamping plate by a cylinder connecting screw.

[0008] In the above-mentioned industrial sewing machine heat cutting device for sewing thread, a transition connecting plate is also sandwiched between the cylinder connecting plate and the cylinder connecting plate. The cylinder is connected to the transition connecting plate by cylinder connecting screws, and the transition connecting plate is fixedly connected to the cylinder connecting plate by connecting plate screws.

[0009] The above-mentioned industrial sewing machine uses a heat-cutting device for sewing thread, wherein the electric heating thread cutter 5 has a V-shaped electric heating thread cutter connected to the bottom of the thread cutter body, and an electric heater is installed in the inner cavity of the thread cutter body; the electric heater is a temperature-adjustable electric heater.

[0010] In use, according to design requirements and actual needs, the hot-cutting device for sewing thread of this application is installed on a corresponding specification and model industrial sewing machine. The industrial sewing machine equipped with the hot-cutting device is connected to the industrial product packaging production line, and the main electrical controller of the packaging production line is connected. After the sewing machine on the industrial product packaging production line is started, the control system detects the working status of the sewing machine through sensors and starts the electric heater in the hot-cutting device for sewing thread of this application, controlling the temperature within the set range. The heating temperature of the electric heater can be set and adjusted according to the material, thickness, and other characteristics of the sewing thread. At this time, the control system inputs the feedback data from the temperature sensor into the system to ensure... The hot cutting device for sewing bags in this application rapidly heats up to the set temperature and enters standby mode, ready to perform sewing bag cutting operations at any time. When the sewing machine enters sewing mode, the sewing thread begins to sew the opening of the packaging bag. At this time, the control system drives the cylinder to open and close the electric heating cutter according to the set sewing parameters and the working condition of the sewing thread. This causes the V-shaped electric heating cutter of the electric heating cutter to contact the sewing thread, cutting the sewing thread and simultaneously fusing and sealing the thread end. The cutting and sealing are completed simultaneously. After cutting and sealing are completed, the cylinder drives the electric heating cutter to return to its original position, separating the electric heating cutter from the sewing thread. This process is repeated to perform hot cutting operations for sewing bags in coordination with the operation of the packaging production line.

[0011] Because this utility model adopts the above-mentioned technical solution, it uses a cylinder to drive an electric heating wire cutter, which achieves the simultaneous cutting and sealing of the sewing thread ends, thus achieving the effect of synchronous cutting and sealing. This allows the sewing thread ends to be completely fused, resulting in a flat, sealed, and non-loose packaging bag. This design can adapt to the operating efficiency and packaging quality of the packaging production line. Furthermore, the heating temperature of the electric heater can be set and adjusted according to the material, thickness, and other characteristics of the sewing thread, making it applicable to packaging bags made of various types of sewing thread. It effectively solves the problems of low working efficiency, poor cutting quality, and unsuitability for high-efficiency cutting of sewing thread in packaging production lines caused by the limited structure of existing sewing thread cutting devices for bag sewing machines. Actual testing and trials have shown that it has a novel and practical structure, is suitable for high-efficiency cutting of sewing thread in industrial bag sewing machinery for packaging production lines, and is highly efficient. It can handle different types of sewing thread for sealing packaging bags, and its cutting and sealing are synchronized, ensuring safe and convenient operation. It is suitable for use with industrial bag sewing machines such as the GS-11, GS-7, GS-9, and GKS35 for cutting and welding sewing thread for sealing packaging bags in product packaging production lines.

[0012] Other features and advantages of this invention will be set forth in the description which follows, and will be apparent in part from the description, or may be learned by practicing the invention. The objectives and other advantages of this invention can be realized and obtained through the structures pointed out in the description and the accompanying drawings. Attached Figure Description

[0013] To more clearly illustrate the technical solutions of the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0014] Figure 1 This is a three-dimensional exploded schematic diagram of the specific structure of the sewing thread heat cutting device connected to the main body of the industrial sewing machine in the embodiments of this application.

[0015] Figure 2 yes Figure 1 A schematic diagram of the specific connection structure of the sewing thread heat cutting device of the embodiment being installed on the main body of the industrial sewing machine.

[0016] Figure 3 yes Figure 1 An enlarged cross-sectional view of the electrothermal tangent in the embodiment.

[0017] Figure 4 yes Figure 3 A schematic diagram of the right-side structure of the A-direction electric heating tangent in the embodiment.

[0018] The labels in the attached diagram are as follows: 1-Cylinder connecting plate; 101-Fasting screw; 2-Transition connecting plate; 201-Connecting plate screw; 3-Electric heating cutter pad; 4-Electric heating cutter base; 401-Through screw; 5-Electric heating wire cutter; 501-Wire cutter body; 502-Heater; 503-V-shaped electric heating wire cutter; 6-Cylinder; 7-Heat insulation plate; 8-Cylinder clamping plate; 801-Cylinder connecting screw; 9-Industrial bag sewing machine body; 901-Body base of bag sewing machine body; 902-Shell recess seat of bag sewing machine body. Detailed Implementation

[0019] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0020] In the description of this utility model, it should be noted that the terms "upper", "lower", "left", "right", "inner", "outer", "top", "bottom", "front end", "rear end", "head", "tail", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0021] As attached Figures 1-2 As shown, the hot-cutting device for sewing thread on the main body 9 of the industrial sewing machine used in this embodiment is composed of a cylinder connecting plate 1, a cylinder 6, an electric heating thread cutter 5, a heat insulation plate 7, an electric heating cutter base 4, and an electric heating cutter pad 3. The bottom of the cylinder 6 is fixed with connecting screws to the electric heating thread cutter 5, which clamps the heat insulation plate 7. The cylinder 6 is connected to the cylinder connecting plate 1 via cylinder connecting screws 801. The cylinder connecting plate 1, together with the cylinder 6, the heat insulation plate 7, and the electric heating thread cutter 5, is connected and fixed to the recessed seat 902 of the machine body of the sewing machine using fastening screws 101. The electric heating cutter pad 3 is fixedly connected to the electric heating cutter base 4 with screws. The electric heating cutter base 4 and the electric heating cutter pad 3 are fixedly connected to the machine body base 901 of the sewing machine using through screws 401. The industrial sewing machine main body 9 used in this embodiment is a GS-11 type industrial sewing machine main body.

[0022] Preferred options are listed in the appendix. Figures 1-2 In this embodiment, the rear of the cylinder 6 is connected to the cylinder clamp plate 8 by the cylinder connecting screw 801.

[0023] For example, see Appendix Figures 1-2 In this embodiment, a transition connecting plate 2 is also sandwiched between the cylinder 6 and the cylinder connecting plate 1. The cylinder 6 is connected to the transition connecting plate 2 by the cylinder connecting screw 801, and the transition connecting plate 2 is fixedly connected to the cylinder connecting plate 1 by the connecting plate screw 201.

[0024] For details, please see the appendix. Figures 1-4 In this embodiment, the electric heating wire cutter 5 has a V-shaped electric heating wire cutter 503 connected to the bottom of the wire cutter body 501, and an electric heater 502 is installed in the inner cavity of the wire cutter body 501; the electric heater 502 is a temperature-adjustable electric heater.

[0025] The above is merely one embodiment. Any other technical features and solutions derived by adding components, making equivalent substitutions, and making partial improvements without creative effort by those skilled in the art are all within the scope of protection of this utility model patent.

Claims

1. A heat cutting device for sewing thread of a bag sewing machine, which comprises a main body (9) of a bag sewing machine, characterized in that, The sewing machine body (9) is connected with the sewing line hot cutting device, which is connected and composed of the cylinder connecting plate (1), the cylinder (6), the electric hot cutter (5), the heat insulation plate (7), the electric hot cutter base (4) and the electric hot cutter pad (3), the bottom of the cylinder (6) is fixed with the electric hot cutter (5) clamping the heat insulation plate (7) by connecting screws, the cylinder (6) is connected to the cylinder connecting plate (1) through the cylinder connecting screw (801), the cylinder connecting plate (1) is connected and fixed on the sewing machine body shell notch seat (902) together with the cylinder (6), the heat insulation plate (7) and the electric hot cutter (5) through the fastening screw (101), the electric hot cutter pad (3) is fixedly connected on the electric hot cutter base (4) by screws, and the electric hot cutter base (4) is fixedly connected on the sewing machine body base (901) together with the electric hot cutter pad (3) by the penetrating screw (401).

2. A hot wire cutting device for a bag sewing machine according to claim 1, characterized in that, The back of the cylinder (6) is connected with the cylinder clamping plate (8) through the cylinder connecting screw (801).

3. A hot wire cutting device for a bag sewing machine according to claim 1, characterized in that, The cylinder (6) is also clamped with the transition connecting plate (2) between the cylinder connecting plate (1), the cylinder (6) is connected to the transition connecting plate (2) through the cylinder connecting screw (801), and the transition connecting plate (2) is fixedly connected to the cylinder connecting plate (1) through the connecting plate screw (201).

4. The hot wire cutting device for a bag sewing machine for industry according to claim 1, characterized in that, The electric hot cutter (5) is the V-shaped electric hot cutter (503) made on the bottom of the cutter body (501), and the electric heater (502) is arranged in the inner cavity of the cutter body (501); the electric heater (502) is a temperature regulating electric heater.

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