Swing arm structure of heating wire template sewing machine

Abstract

The utility model belongs to the technical field of sewing machines, and relates to a swing arm structure of an electric heating wire template sewing machine, which comprises a rotary machine head and a material disc wound by an electric heating wire, the electric heating wire in the material disc is pulled to a swing arm assembly, and the swing arm assembly synchronously swings along with the sewing frequency of a needle to sew the electric heating wire. The swing arm assembly comprises a swing seat, a thread passing mechanism and a thread trimming mechanism are arranged on the swing seat, the thread trimming mechanism comprises a first shear blade and a second shear blade which are hinged, the first shear blade is fixed to the swing seat, and the driving end of the second shear blade is connected with a thread trimming air cylinder. The thread trimming air cylinder is installed on the swing base and drives the second shear blade to rotate so as to cut off the electric heating wire. According to the swing arm structure of the heating wire template sewing machine, the trimming mechanism is integrated on the swing arm structure, and the swing arm structure has the advantages of being simple in structure and high in automation degree.

Description

Technical Field

[0001] The utility model belongs to the technical field of sewing machines and relates to a swing arm structure of an electric heating wire template sewing machine. Background Art

[0002] A template sewing machine refers to a sewing equipment that combines clothing template CAD software, clothing template sewing CAD software and advanced CNC technology for fully automatic application of template production. A template sewing machine generally includes a frame and a machine head, a bottom line mechanism and a template transmission mechanism arranged on the frame. When working, the template transmission mechanism drives the template to move along a preset trajectory under the control of the controller.

[0003] With the further development of template sewing machines, technicians have developed template sewing machines specifically for sewing heating wires. Existing template sewing machines generally only have a thread trimming mechanism for sewing threads, but not a thread trimming mechanism for heating wires. After the heating wires are sewn, the operator needs to manually trim the heating wires, which is troublesome and affects sewing efficiency.

[0004] Chinese utility model patent CN 220132501 U (publication date 2023-12-05) discloses a sewing device for electric blanket heating wire for a rotating machine head, including a rotating mechanism, a sewing machine head, a shearing mechanism, a thread winding mechanism and a thread passing mechanism, wherein the upper part of the sewing machine head is connected with a rotating mechanism, the side of the sewing machine head is connected with a thread winding mechanism, the lower part of the sewing machine head is provided with a shearing mechanism and a thread passing mechanism, the thread passing mechanism includes a fixed plate, a first cylinder, an electromagnetic valve, a fixed guard block, a second cylinder, a clamping block and a thread passing swing arm, the side of the sewing machine head is connected with a fixed plate, the side of the fixed plate is connected with a first cylinder, the driving end of the first cylinder is connected with a A fixed guard block is connected, a second cylinder is connected inside the fixed guard block, a clamping block is connected to one side of the clamping block, a wire-passing swing arm is connected to one side of the fixed guard block, a solenoid valve is connected to one side of the fixed guard block, the shearing mechanism includes a driving part and a shearing part, the driving part includes a third cylinder, upper and lower connecting plates, a sliding seat, a presser foot rod, a shaft sleeve and a scissors seat, a third cylinder is connected inside the sewing machine head, the driving end of the third cylinder is connected to the upper and lower connecting plates, the upper and lower connecting plates are connected to the sliding seat, the sliding seat is connected to the presser foot rod, the presser foot rod is connected to the scissors, and the presser foot rod outer shell is connected to the shaft sleeve. Although the above-mentioned heating wire sewing device is also provided with an automatic thread cutting structure, its structure is relatively complicated. Utility Model Content

[0005] In view of the deficiencies of the prior art, the utility model provides a swing arm structure of an electric heating wire template sewing machine, in which a thread cutting mechanism is integrated, and the utility model has the advantages of simple structure and high automation.

[0006] In order to solve the above technical problems, the purpose of the utility model is achieved through the following technical solutions:

[0007] A swing arm structure of an electric heating wire template sewing machine comprises a rotating machine head and a material tray on which the electric heating wire is wound, the electric heating wire in the material tray is pulled to a swing arm assembly, the swing arm assembly swings synchronously with the sewing frequency of a random needle to sew the electric heating wire, the swing arm assembly comprises a swing seat, a wire passing mechanism and a wire cutting mechanism are arranged on the swing seat, the wire cutting mechanism comprises a hinged first scissor blade and a second scissor blade, the first scissor blade is fixed on the swing seat, the driving end of the second scissor blade is connected to a wire cutting cylinder, the wire cutting cylinder is mounted on the swing seat and drives the second scissor blade to rotate to cut the electric heating wire.

[0008] In the above-mentioned swing arm structure of an electric heating wire template sewing machine, a fixed seat is arranged on one side of the machine head, a first slider driven by a power device for reciprocating motion is slidably arranged at the bottom of the fixed seat, and the swing seat is fixed on the first slider and swings with the reciprocating motion of the first slider.

[0009] In the above-mentioned swing arm structure of an electric heating wire template sewing machine, the swing seat refers to a structure that is relatively fixed to the first slider and reciprocates therewith. The swing seat can be an independent component or composed of multiple components to facilitate the installation of the thread passing mechanism and the thread cutting mechanism.

[0010] In the above-mentioned swing arm structure of an electric heating wire template sewing machine, the thread-passing mechanism includes a thread-passing slide rail, the thread-passing slide rail is arranged to be inclined downward and is slidably provided with a second slider, a thread-passing assembly is arranged on the second slider, and a thread-passing cylinder installed on the swing seat drives the thread-passing assembly to slide between the sewing position and the standby position, and when the thread-passing assembly is in the sewing position, its end is arranged corresponding to the machine needle.

[0011] In the above-mentioned swing arm structure of an electric heating wire template sewing machine, the wire passing assembly includes a cylinder connecting plate and a wire passing plate, the upper end of the cylinder connecting plate is bent perpendicular to the sliding direction to form an upper folding plate, and the lower end of the wire passing plate is bent perpendicular to the sliding direction to form a lower folding plate, the upper folding plate is connected to the piston rod of the wire passing cylinder and is provided with an upper wire passing sleeve, and the lower folding plate is provided with a lower wire passing sleeve, and the electric heating wire passes through the upper wire passing sleeve and the lower wire passing sleeve in turn and is pulled onto the table of the template machine.

[0012] In the above-mentioned swing arm structure of an electric heating wire template sewing machine, a connecting rod is arranged between the second scissor blade and the thread trimming cylinder, one end of the connecting rod is hinged to the driving end of the second scissor blade, and the other end is hinged to the piston rod of the thread trimming cylinder.

[0013] In the above-mentioned swing arm structure of the electric heating wire template sewing machine, the cutting edges of the first scissor blade and the second scissor blade are bent upward. Preferably, the cutting edge of the first scissor blade is tilted upward from the scissor hinge to the scissor opening; in the initial state, the cutting edge of the second scissor blade is horizontally arranged or tilted downward from the scissor hinge to the scissor opening.

[0014] In the above-mentioned swing arm structure of the electric heating wire template sewing machine, the thread passing mechanism and the thread cutting mechanism are arranged in parallel.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] The utility model provides a swing arm structure of an electric heating wire template sewing machine, which improves the traditional swing arm assembly and further integrates a thread cutting mechanism on the thread passing mechanism of the swing arm assembly, so that the swing arm structure has the function of cutting the electric heating wire on the basis of the existing thread passing function, and the two functions do not interfere with each other.

[0017] The utility model has the advantages of simple structure and high automation degree. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a three-dimensional diagram of the utility model;

[0019] Figure 2 It is a three-dimensional diagram of the swing arm structure of the utility model;

[0020] Figure 3 It is a three-dimensional diagram of the thread trimming mechanism of the utility model;

[0021] Figure numerals: 1. machine head; 2. material tray; 3. swing seat; 4. first scissor blade; 5. second scissor blade; 6. thread-cutting cylinder; 7. fixed seat; 8. first slider; 9. thread-passing slide rail; 10. second slider; 11. thread-passing cylinder; 12. needle; 13. cylinder connecting plate; 14. thread-passing plate; 15. upper folding plate; 16. lower folding plate; 17. upper thread-passing sleeve; 18. lower thread-passing sleeve; 19. connecting rod. DETAILED DESCRIPTION

[0022] The present invention will be further described below with reference to the accompanying drawings. Figure 1-3 :

[0023] A swing arm structure of an electric heating wire template sewing machine comprises a rotating machine head 1 and a material tray 2 on which electric heating wire is wound. The electric heating wire in the material tray 2 is pulled to a swing arm assembly. The swing arm assembly swings synchronously with the sewing frequency of a random needle 12 to sew the electric heating wire. The swing arm assembly comprises a swing seat 3. A wire passing mechanism and a wire cutting mechanism are arranged on the swing seat 3. When working, the swing seat 3 is driven by a power device to swing back and forth, and the wire passing mechanism and the wire cutting mechanism swing back and forth synchronously with the swing seat 3.

[0024] Compare with Figure 2 The structure of the thread-passing mechanism is as follows: the thread-passing mechanism includes a thread-passing slide rail 9, the thread-passing slide rail 9 is tilted downward and is slidably provided with a second slider 10, the second slider 10 is provided with a thread-passing assembly, and a thread-passing cylinder 11 installed on the swing seat 3 drives the thread-passing assembly to slide between the sewing position and the standby position, and when the thread-passing assembly is in the sewing position, its end is arranged corresponding to the needle 12.

[0025] Compare with Figure 3 The structure of the wire cutting mechanism is: the wire cutting mechanism includes a hinged first scissor blade 4 and a second scissor blade 5, the first scissor blade 4 is fixed on the swing seat 3, and the driving end of the second scissor blade 5 is connected to a wire cutting cylinder 6, which is installed on the swing seat 3 and drives the second scissor blade 5 to rotate to cut the heating wire.

[0026] The working process of this embodiment is: Figure 1 When the electric heating wire needs to be sewn, the thread cylinder 11 drives the thread assembly to move downward to the sewing position. When the thread assembly is in the sewing position, the electric heating wire can be pulled to the table of the template machine for sewing. Then the sewing mechanism starts to work and sew. The driving device drives the swing arm assembly to swing at the same frequency as the machine needle 12, and the template drives the cloth to move to pull the heating wire out of the material tray 2, so that the heating wire swings on the left and right sides of the machine needle 12. The heating wire swings once for each sewing of the machine needle 12, so that the sewing thread shuttles between the left and right sides of the heating wire to sew the heating wire and the cloth together firmly, realizing the automatic sewing of the heating wire. After sewing, the thread cylinder 11 drives the thread assembly to move upward to the standby position, and moves the heating wire to the opening of the thread cutting mechanism through the template. The thread cutting cylinder 6 drives the second scissor blade 5 to rotate around the hinge, and the cutting edges of the first scissor blade 4 and the second scissor blade 5 close and cut the electric heating wire. Then the thread cutting cylinder 6 drives the second scissor blade 5 to reset.

[0027] In this embodiment, the driving structure of the swing seat 3 is: a fixed seat 7 is provided on one side of the head 1, and a first slider 8 driven by a power device to reciprocate is provided on the bottom sliding of the fixed seat 7, and the swing seat 3 is fixed on the first slider 8 and swings with the reciprocating motion of the first slider 8.

[0028] In this embodiment, the swing seat 3 refers to a structure that is relatively fixed to the first slider 8 and reciprocates therewith. The swing seat 3 can be an independent component or composed of multiple components to facilitate the installation of the wire passing mechanism and the wire cutting mechanism.

[0029] Compare with Figure 2 In this embodiment, the specific structure of the wire-passing assembly is: the wire-passing assembly includes a cylinder connecting plate 13 and a wire-passing plate 14, the upper end of the cylinder connecting plate 13 is bent perpendicularly to the sliding direction to form an upper folding plate 15, the lower end of the wire-passing plate 14 is bent perpendicularly to the sliding direction to form a lower folding plate 16, the upper folding plate 15 is connected to the piston rod of the wire-passing cylinder 11 and is provided with an upper wire-passing sleeve 17, the lower folding plate 16 is provided with a lower wire-passing sleeve 18, the heating wire passes through the upper wire-passing sleeve 17 and the lower wire-passing sleeve 18 in turn and is pulled to the table of the template machine, the upper wire-passing sleeve 17 and the lower wire-passing sleeve 18 are respectively embedded in the through holes coaxially arranged in the upper folding plate 15 and the lower folding plate 16.

[0030] Furthermore, the thread trimming cylinder 6 drives the driving end of the second scissor blade 5 through the connecting rod 19: a connecting rod 19 is arranged between the second scissor blade 5 and the thread trimming cylinder 6, one end of the connecting rod 19 is hinged to the driving end of the second scissor blade 5, and the other end is hinged to the piston rod of the thread trimming cylinder 6.

[0031] In order to facilitate the heating wire to enter the opening of the wire cutting mechanism and to facilitate cutting the heating wire, the cutting edges of the first scissor blade 4 and the second scissor blade 5 are bent upward. Preferably, the cutting edge of the first scissor blade 4 is tilted upward from the scissor hinge to the scissor opening; in the initial state, the cutting edge of the second scissor blade 5 is horizontally arranged or tilted downward from the scissor hinge to the scissor opening.

[0032] Preferably, the thread passing mechanism and the thread cutting mechanism are arranged in parallel.

[0033] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Therefore, any equivalent changes made based on the structure, shape, and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A swing arm structure of an electric heating wire template sewing machine, comprising a rotating machine head (1) and a material tray (2) on which the electric heating wire is wound, the electric heating wire in the material tray (2) is pulled to a swing arm assembly, and the swing arm assembly swings synchronously with the sewing frequency of the random needle to sew the electric heating wire, characterized in that: The swing arm assembly comprises a swing seat (3), on which a wire passing mechanism and a wire cutting mechanism are arranged, and the wire cutting mechanism comprises a hinged first scissor blade (4) and a second scissor blade (5), wherein the first scissor blade (4) is fixed on the swing seat (3), and a driving end of the second scissor blade (5) is connected to a wire cutting cylinder (6), and the wire cutting cylinder (6) is installed on the swing seat (3) and drives the second scissor blade (5) to rotate so as to cut the heating wire.

2. The swing arm structure of the electric heating wire template sewing machine according to claim 1, characterized in that: A fixed seat (7) is provided on one side of the machine head (1), and a first sliding block (8) driven by a power device to reciprocate is slidably provided at the bottom of the fixed seat (7), and the swing seat (3) is fixed on the first sliding block (8) and swings with the reciprocating motion of the first sliding block (8).

3. The swing arm structure of the electric heating wire template sewing machine according to claim 1, characterized in that: The thread-passing mechanism comprises a thread-passing slide rail (9), the thread-passing slide rail (9) is arranged to be inclined downward and slidably provided with a second slider (10), a thread-passing assembly is provided on the second slider (10), a thread-passing cylinder (11) installed on the swing seat (3) drives the thread-passing assembly to slide between a sewing position and a standby position, and when the thread-passing assembly is in the sewing position, its end is arranged corresponding to the machine needle (12).

4. The swing arm structure of the electric heating wire template sewing machine according to claim 3, characterized in that: The wire-passing assembly comprises a cylinder connecting plate (13) and a wire-passing plate (14); the upper end of the cylinder connecting plate (13) is bent perpendicularly to the sliding direction to form an upper folding plate (15); the lower end of the wire-passing plate (14) is bent perpendicularly to the sliding direction to form a lower folding plate (16); the upper folding plate (15) is connected to the piston rod of the wire-passing cylinder (11) and is provided with an upper wire-passing sleeve (17); the lower folding plate (16) is provided with a lower wire-passing sleeve (18); the heating wire passes through the upper wire-passing sleeve (17) and the lower wire-passing sleeve (18) in sequence and is then pulled onto the table of the template machine.

5. The swing arm structure of the electric heating wire template sewing machine according to claim 1, characterized in that: A connecting rod (19) is provided between the second scissor blade (5) and the thread trimming cylinder (6); one end of the connecting rod (19) is hinged to the driving end of the second scissor blade (5), and the other end is hinged to the piston rod of the thread trimming cylinder (6).

6. The swing arm structure of the electric heating wire template sewing machine according to claim 1, characterized in that: The cutting edges of the first scissor blade (4) and the second scissor blade (5) are bent upwards.

7. The swing arm structure of the electric heating wire template sewing machine according to claim 1, characterized in that: The thread passing mechanism and the thread cutting mechanism are arranged in parallel.

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