Flat seaming machine

Abstract

The flat seaming machine comprises a machine shell, an electric control connector and a thread loosening assembly, the machine shell is provided with a machine shell front portion and a machine shell rear portion, and the machine shell front portion and the machine shell rear portion are arranged on the two sides of the machine shell; the electric control connector is arranged on the rear portion of the machine shell and connected with the machine shell. The thread loosening assembly is arranged on the front portion of the machine shell and connected with the machine shell. Namely, the thread loosening assembly and the electric control connector are arranged on the two sides of the machine shell, so that the gap between the thread loosening assembly and the electric control connector is large, plugging and unplugging of the electric control connector are not affected by the thread loosening assembly, a user can plug and unplug the electric control connector on the flat seaming machine conveniently, and meanwhile the thread loosening assembly and the electric control connector on the flat seaming machine are not affected by the thread loosening assembly. And the action of the wire loosening assembly does not touch the wire on the electric control connector, so that the situation of electric control error report caused by the action of the wire loosening assembly is avoided.

Description

Technical Field

[0001] The utility model belongs to the technical field related to sewing machines, and particularly relates to an overlock sewing machine. Background Art

[0002] At present, the thread loosening structure and the electric control connector of the existing integrated overlock sewing machine are arranged at the rear of the machine shell. This makes the gap between the thread loosening structure and the electric control connector smaller, which is not convenient for the plugging and unplugging of the electric control connector. Sometimes, the electric control error will be caused because the thread loosening plate on the thread loosening structure touches the wire on the electric control connector. Summary of the Utility Model

[0003] In view of this, it is necessary to provide an overlock sewing machine for solving the above technical problems.

[0004] An overlock sewing machine, comprising:

[0005] A machine shell, having a front part and a rear part of the machine shell, the front part and the rear part of the machine shell are arranged on both sides of the machine shell;

[0006] An electric control connector, arranged on the rear part of the machine shell and connected to the machine shell;

[0007] A thread loosening assembly, arranged on the front part of the machine shell and connected to the machine shell.

[0008] It can be understood that arranging the thread loosening assembly and the electric control connector on both sides of the machine shell can make the gap between the thread loosening assembly and the electric control connector larger, so that the plugging and unplugging of the electric control connector are not affected by the thread loosening assembly, and it is convenient for the user to plug and unplug the electric control connector on the overlock sewing machine. At the same time, the movement of the thread loosening assembly will not touch the wire on the electric control connector, avoiding the occurrence of the situation that the electric control error is caused by the movement of the thread loosening assembly.

[0009] In one embodiment, the overlock sewing machine further comprises a thread cutting assembly, the thread cutting assembly is installed on the front part of the machine shell and is in transmission connection with the thread loosening assembly for controlling the movement of the thread loosening assembly;

[0010] Wherein, the thread loosening assembly is arranged on the side of the thread cutting assembly away from the electric control connector.

[0011] It can be understood that through the above structural arrangement, the distance between the thread loosening assembly and the electric control connector can be further increased to ensure that the two do not interfere with each other.

[0012] In one embodiment, the thread-loosening assembly includes a thread-loosening plate fixed crank, a thread-loosening plate, a thread-loosening crank, and a thread-loosening shaft. One end of the thread-loosening plate is fixedly connected to the thread-loosening plate fixed crank, and the other end of the thread-loosening plate is hinged to the thread-loosening crank; the end of the thread-loosening crank away from the thread-loosening plate is fixedly connected to the thread-loosening shaft;

[0013] The thread-loosening shaft is connected to the machine housing in a hinged manner.

[0014] In one embodiment, the overlock sewing machine further includes a thread-cutting assembly. The thread-cutting assembly is installed on the front part of the machine housing. The thread-cutting assembly includes a thread-cutting shaft, and the thread-cutting shaft is in transmission connection with the thread-loosening plate fixed crank;

[0015] Wherein, the installation position of the thread-loosening plate fixed crank on the thread-cutting shaft can be adjusted.

[0016] It can be understood that by adjusting the installation position between the thread-loosening plate fixed crank and the thread-cutting shaft, the debugging of the thread-loosening assembly can be realized to meet the use requirements of the overlock sewing machine.

[0017] In one embodiment, the thread-loosening plate fixed crank is sleeved on the thread-cutting shaft;

[0018] Wherein, a connecting piece is screwed on the thread-loosening plate fixed crank, and the connecting piece can drive the thread-loosening plate fixed crank to clamp the thread-cutting shaft.

[0019] It can be understood that through the above structural arrangement, the user can control the locking / unlocking of the thread-loosening plate fixed crank on the thread-cutting shaft by screwing the connecting piece, which is convenient for subsequent debugging and maintenance of the thread-loosening assembly.

[0020] In one embodiment, the thread-loosening plate has a bent portion, and the bent portion bends and extends towards the direction of the machine housing;

[0021] Wherein, a preset gap is formed between the thread-loosening plate and the machine housing.

[0022] It can be understood that through the above structural arrangement, the assembly of the thread-loosening plate on the machine housing can be made more compact, which has the effect of reducing the external volume of the overlock sewing machine.

[0023] In one embodiment, the overlock sewing machine further includes a switch assembly. The switch assembly is arranged on the front part of the machine housing and is used to detect the action of the thread-loosening assembly and generate a feedback signal.

[0024] It can be understood that integrating the switch assembly into the front part of the machine housing is convenient for observing and debugging the switch assembly.

[0025] In one embodiment, the thread loosening assembly includes a thread loosening plate fixing crank, a thread loosening plate, a thread loosening crank, and a thread loosening shaft. One end of the thread loosening plate is fixedly connected to the thread loosening plate fixing crank, and the other end of the thread loosening plate is hinged to the thread loosening crank; the end of the thread loosening crank away from the thread loosening plate is fixedly connected to the thread loosening shaft; the thread loosening shaft is connected to the machine housing in a hinged manner;

[0026] Wherein, the switch assembly includes a safety switch and a trigger. The safety switch is fixedly installed on the machine housing, and the trigger is installed on the thread loosening plate, and the trigger can trigger the safety switch.

[0027] It can be understood that integrating the trigger for triggering the safety switch onto the thread loosening plate can save the relevant components for carrying the trigger and simplify the components.

[0028] In one embodiment, the safety switch is configured as a Hall sensor;

[0029] And, the trigger is configured as a magnetic part.

[0030] In one embodiment, the switch assembly further includes a fixing plate, and the safety switch can be fixed to the machine housing through the fixing plate;

[0031] Wherein, the installation position of the fixing plate on the machine housing can be adjusted.

[0032] It can be understood that by adjusting the installation position of the fixing plate on the machine housing, the installation position of the safety switch on the machine housing can be adjusted, which can meet the use requirements for debugging the switch assembly.

[0033] Due to the application of the above technical solution, the present utility model has the following advantages compared with the prior art:

[0034] For the overlock sewing machine claimed in this application, the thread loosening assembly and the electric control connector are arranged on both sides of the machine housing, so that the gap between the thread loosening assembly and the electric control connector can be larger, the plugging and unplugging of the electric control connector are not affected by the thread loosening assembly, and it is convenient for the user to plug and unplug the electric control connector on the overlock sewing machine. At the same time, the movement of the thread loosening assembly will not touch the wires on the electric control connector, avoiding the occurrence of electric control error reporting caused by the movement of the thread loosening assembly. Description of the Drawings

[0035] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the accompanying drawings required for the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can also be obtained based on these drawings.

[0036] Figure 1 The structural schematic diagram of an overlock sewing machine provided by an embodiment of the present application.

[0037] Figure 2 The structural schematic diagram when the thread-loosing component, thread-cutting component and switch component in the present application are assembled.

[0038] Figure 3 For Figure 2 The enlarged view of part P in

[0039] Figure 4 The structural schematic diagram when the thread-loosing plate and the magnetic part in the present application are assembled.

[0040] Reference numerals: 100, overlock sewing machine; 10, machine housing; 11, front part of the machine housing; 12, rear part of the machine housing; 20, thread-loosing component; 201, first screw; 202, thread-loosing shaft position screw; 21, thread-loosing plate fixing crank; 211, connecting part; 22, thread-loosing plate; 221, bending part; 23, thread-loosing crank; 24, thread-loosing shaft; 30, thread-cutting component; 31, thread-cutting shaft; 40, switch component; 401, third screw; 41, safety switch; 411, Hall sensor; 42, triggering part; 421, magnetic part; 43, fixing plate; 431, long strip hole. Detailed implementation manners

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model with reference to the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, rather than 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 efforts belong to the protection scope of the present utility model.

[0042] It should be noted that when an element is referred to as "provided on" another element, it can be directly provided on the other element or there may also be an intermediate element. When an element is considered to be "provided on" another element, it can be directly provided on the other element or there may be an intermediate element at the same time. When an element is considered to be "fixed to" another element, it can be directly fixed to the other element or there may be an intermediate element at the same time.

[0043] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which this utility model belongs. The terms used in the description of this utility model are only for the purpose of describing specific embodiments and are not intended to limit this utility model. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0044] As Figure 1 shown, the overlock sewing machine 100 provided by an embodiment of this application includes a machine shell 10, an electric control connector (not shown in the figure), and a thread loosening assembly 20. The machine shell 10 has a front part 11 and a rear part 12 of the machine shell. The front part 11 and the rear part 12 of the machine shell are arranged on both sides of the machine shell 10; the electric control connector is arranged on the rear part 12 of the machine shell and is connected to the machine shell 10; the thread loosening assembly 20 is arranged on the front part 11 of the machine shell and is connected to the machine shell 10. That is to say, the electric control connector and the thread loosening assembly 20 of the overlock sewing machine 100 of this application are arranged on both sides of the machine shell 10. Here, the front part 11 of the machine shell specifically refers to the part in front of the machine shell 10; the rear part 12 of the machine shell specifically refers to the part behind the machine shell 10. It should be noted that the above electric control connector is a connection structure for connecting the overlock sewing machine 100 to an external electrical device.

[0045] It can be understood that arranging the thread loosening assembly 20 and the electric control connector on both sides of the machine shell 10 can make the gap between the thread loosening assembly 20 and the electric control connector larger, so that the plugging and unplugging of the electric control connector are not affected by the thread loosening assembly 20, and it is convenient for the user to plug and unplug the electric control connector on the overlock sewing machine 100. At the same time, the movement of the thread loosening assembly 20 will not touch the wires on the electric control connector, avoiding the situation of electric control error caused by the movement of the thread loosening assembly 20.

[0046] As Figure 1 、 Figure 2 shown, the thread loosening assembly 20 includes a thread loosening plate fixed crank 21, a thread loosening plate 22, a thread loosening crank 23, and a thread loosening shaft 24. One end of the thread loosening plate 22 is fixedly connected to the thread loosening plate fixed crank 21, and the other end of the thread loosening plate 22 is hinged to the thread loosening crank 23; the end of the thread loosening crank 23 far from the thread loosening plate 22 is fixedly connected to the thread loosening shaft 24; the thread loosening shaft 24 is connected to the machine shell 10 in a hinged manner. Here, the thread loosening plate 22 and the thread loosening plate fixed crank 21 are fixedly connected by two first screws 201, the thread loosening plate 22 and the thread loosening crank 23 are hinged by a thread loosening shaft position screw 202, and the thread loosening shaft 24 and the thread loosening crank 23 are fixedly connected by a second screw (not shown in the figure).

[0047] Preferably, as Figure 1 、 Figure 2 and Figure 4As shown, the thread loosening plate 22 has a bent portion 221 which extends in a bent manner towards the direction of the machine housing 10. A preset gap is formed between the thread loosening plate 22 and the machine housing 10. In this way, the assembly of the thread loosening plate 22 on the machine housing 10 can be made more compact, which has the effect of reducing the external volume of the overlock sewing machine 100.

[0048] As Figure 1 , Figure 2 shown, the overlock sewing machine 100 further includes a thread cutting assembly 30 which is installed on the front part 11 of the machine housing and is in driving connection with the thread loosening assembly 20 for controlling the action of the thread loosening assembly 20. That is to say, the power for the action of the thread loosening assembly 20 is provided by the thread cutting assembly 30. It should be noted that the structural composition and working principle of the thread cutting assembly 30 can both adopt the conventional methods of existing overlock sewing machines and will not be elaborated here.

[0049] Preferably, as Figure 1 shown, the thread loosening assembly 20 is arranged on the side of the thread cutting assembly 30 away from the electric control connector. In this way, the distance between the thread loosening assembly 20 and the electric control connector can be further increased to ensure that the two do not interfere with each other.

[0050] As Figure 1 , Figure 2 shown, the thread cutting assembly 30 includes a thread cutting shaft 31 which is in driving connection with the fixed crank 21 of the thread loosening plate and realizes the driving connection between the thread cutting assembly 30 and the thread loosening assembly 20. Here, the installation position of the fixed crank 21 of the thread loosening plate on the thread cutting shaft 31 can be adjusted, so as to realize the debugging of the thread loosening assembly 20 to meet the use requirements of the overlock sewing machine 100.

[0051] As Figure 2 shown, the fixed crank 21 of the thread loosening plate is sleeved on the thread cutting shaft 31. Among them, a connecting piece 211 is screwed on the fixed crank 21 of the thread loosening plate, and the connecting piece 211 can drive the fixed crank 21 of the thread loosening plate to clamp the thread cutting shaft 31. That is to say, the user can control the locking / unlocking of the fixed crank 21 of the thread loosening plate on the thread cutting shaft 31 by screwing the connecting piece 211. And when the fixed crank 21 of the thread loosening plate is unlocked on the thread cutting shaft 31, the installation position of the fixed crank 21 of the thread loosening plate on the thread cutting shaft 31 can be adjusted by translating the fixed crank 21 of the thread loosening plate, which is convenient for the subsequent debugging and maintenance of the thread loosening assembly 20. Here, the connecting piece 211 can be configured as a screw or a bolt, etc.

[0052] As Figure 2 , Figure 3 shown, the overlock sewing machine 100 further includes a switch assembly 40 which is arranged on the front part 11 of the machine housing and is used for detecting the action of the thread loosening assembly 20 and generating a feedback signal. In this way, it is convenient for the observation and debugging of the switch assembly 40.

[0053] Preferably, as Figure 3 , Figure 4 shown, the switch assembly 40 includes a safety switch 41 and a trigger 42. The safety switch 41 is fixedly mounted on the housing 10, and the trigger 42 is mounted on the thread-loosening plate 22. Moreover, the trigger 42 can trigger the safety switch 41. That is to say, in this embodiment, the trigger 42 is integrated onto the thread-loosening plate 22, which can save the related components for carrying the trigger 42 and simplify the components. Here, the safety switch 41 is configured as a Hall sensor 411, and the trigger 42 is configured as a magnetic member 421 such as a magnet or a strong magnet. The magnetic member 421 is specifically assembled onto the thread-loosening plate 22 in a tight-fitting manner. Of course, in other embodiments, the safety switch 41 can also be configured as a microswitch, an optoelectronic switch, etc.

[0054] Preferably, as Figure 3 shown, the switch assembly 40 further includes a fixing plate 43. The safety switch 41 is fixed to the housing 10 through the fixing plate 43. Among them, the installation position of the fixing plate 43 on the housing 10 can be adjusted, and the installation position of the safety switch 41 on the housing 10 can be adjusted accordingly, so as to meet the use requirements for debugging the switch assembly 40. Here, a long slot 431 is formed on the fixing plate 43, and the fixing plate 43 is fixed to the housing 10 by using a third screw 401 passing through the long slot 431 and threadedly connected to the housing 10. By using the structural characteristics of the long slot 431, the installation position of the fixing plate 43 on the housing 10 can be adjusted.

[0055] As can be seen from the above, when the overlock sewing machine 100 of the present application is working, the thread-cutting shaft 31 on the thread-cutting assembly 30 can drive the thread-loosening plate fixing crank 21 and the thread-loosening plate 22 to move, and then the thread-loosening plate 22 is used to drive the thread-loosening crank 23 and the thread-loosening shaft 24 to rotate to complete thread loosening.

[0056] The technical features of the above embodiments can be combined arbitrarily. For the sake of brief description, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope recorded in this specification.

[0057] Those of ordinary skill in the art of this technology should recognize that the above embodiments are only used to illustrate the present invention, rather than to limit the present invention. As long as within the scope of the essential spirit of the present invention, appropriate changes and variations made to the above embodiments fall within the scope claimed by the present invention.

Claims

1. A flat sewing machine, characterized in that: The interlock sewing machine (100) comprises: A casing (10) having a casing front portion (11) and a casing rear portion (12), wherein the casing front portion (11) and the casing rear portion (12) are arranged on two sides of the casing (10); An electric control connector, disposed on the rear portion (12) of the housing and connected to the housing (10); A wire loosening assembly (20) is arranged on the front portion (11) of the casing and connected to the casing (10).

2. The interlock sewing machine according to claim 1, characterized in that: The interlock sewing machine (100) further comprises a thread trimming assembly (30), wherein the thread trimming assembly (30) is mounted on the front portion of the housing (11) and is transmission-connected to the thread loosening assembly (20) for controlling the movement of the thread loosening assembly (20); Wherein, the wire loosening component (20) is arranged on a side of the wire cutting component (30) away from the electric control connector.

3. The interlock sewing machine according to claim 1, characterized in that: The wire loosening assembly (20) comprises a wire loosening plate fixed crank (21), a wire loosening plate (22), a wire loosening crank (23) and a wire loosening shaft (24); one end of the wire loosening plate (22) is fixedly connected to the wire loosening plate fixed crank (21), and the other end of the wire loosening plate (22) is hinged to the wire loosening crank (23); and one end of the wire loosening crank (23) away from the wire loosening plate (22) is fixedly connected to the wire loosening shaft (24); The wire release shaft (24) is connected to the housing (10) in a hinged manner.

4. The interlock sewing machine according to claim 3, characterized in that: The interlock sewing machine (100) further comprises a thread trimming assembly (30), wherein the thread trimming assembly (30) is mounted on the front portion (11) of the housing, and the thread trimming assembly (30) comprises a thread trimming shaft (31), and the thread trimming shaft (31) is drivingly connected to the thread loosening plate fixing crank (21); Wherein, the installation position of the thread loosening plate fixing crank (21) on the thread cutting shaft (31) can be adjusted.

5. The interlock sewing machine according to claim 4, characterized in that: The thread loosening plate fixing crank (21) is sleeved onto the thread cutting shaft (31); Wherein, a connecting piece (211) is screwed onto the thread loosening plate fixing crank (21), and the connecting piece (211) can drive the thread loosening plate fixing crank (21) to clamp the thread cutting shaft (31).

6. The interlock sewing machine according to claim 3, characterized in that: The wire loosening plate (22) has a bending portion (221), and the bending portion (221) bends and extends toward the housing (10); Wherein, a preset gap is formed between the wire loosening plate (22) and the housing (10).

7. The interlock sewing machine according to claim 1, characterized in that: The interlock sewing machine (100) further comprises a switch assembly (40), wherein the switch assembly (40) is arranged on the front part (11) of the casing and is used to detect the action of the thread loosening assembly (20) and generate a feedback signal.

8. The interlock sewing machine according to claim 7, characterized in that: The wire loosening assembly (20) comprises a wire loosening plate fixed crank (21), a wire loosening plate (22), a wire loosening crank (23) and a wire loosening shaft (24); one end of the wire loosening plate (22) is fixedly connected to the wire loosening plate fixed crank (21), and the other end of the wire loosening plate (22) is hinged to the wire loosening crank (23); one end of the wire loosening crank (23) away from the wire loosening plate (22) is fixedly connected to the wire loosening shaft (24); and the wire loosening shaft (24) is hingedly connected to the housing (10); The switch assembly (40) comprises a safety switch (41) and a trigger member (42); the safety switch (41) is fixedly mounted on the housing (10); the trigger member (42) is mounted on the wire release plate (22); and the trigger member (42) can trigger the safety switch (41).

9. The interlock sewing machine according to claim 8, characterized in that: The safety switch (41) is configured as a Hall sensor (411); Furthermore, the triggering member (42) is configured as a magnetic member (421).

10. The interlock sewing machine according to claim 8, characterized in that: The switch assembly (40) further comprises a fixing plate (43), and the safety switch (41) can be fixed to the housing (10) via the fixing plate (43); Wherein, the installation position of the fixing plate (43) on the housing (10) can be adjusted.

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