A device for clamping and cutting thread for embroidery machine

Abstract

The application discloses a thread clamping and cutting integrated device for an embroidery machine and relates to the technical field of embroidery machines, which comprises a thread clamping assembly, an elastic force applied on the thread clamping assembly to keep the thread clamping port of the thread clamping assembly in a normally closed state, a thread cutting assembly, the thread cutting assembly being provided with an openable and closable thread cutting port, a linkage and a motion driving member, the motion driving member being used to drive the thread cutting assembly to move and control the opening and closing of the thread cutting port through the linkage, and the linkage being capable of driving the thread clamping assembly to move and open the thread clamping port during the opening of the thread cutting port. The application has the advantages of simple structure, small size and good action stability of the thread cutting port.

Description

Technical Field

[0001] This application relates to the field of embroidery machine technology, specifically to an integrated device for embroidery machines that combines thread clamping and thread cutting. Background Technology

[0002] Currently, after the embroidery is completed, the embroidery cord and thread need to be cut to separate them from the fabric. The commonly used cord embroidery clamping and cutting mechanisms are driven by separate drive mechanisms, such as CN115821497B. This results in a complex structure, large size, and high cost. Furthermore, since the cord clamping action is completed before the cutting mechanism operates, and the clamping mechanism reopens after the scissors open, both drive mechanisms require high control precision to ensure the sequential operation. To simplify the structure and facilitate control, mechanisms using the same drive mechanism to operate both the clamping and cutting mechanisms have emerged, such as CN216473881U. However, the linkage structure is still relatively complex, resulting in a large integrated cord embroidery clamping and cutting device that is not well-suited for use in locations with limited installation space. Utility Model Content

[0003] In view of this, this application provides an integrated device for clamping and cutting threads for embroidery machines to solve the technical problem of complex linkage structures.

[0004] To achieve the above objectives, this application provides the following technical solution: A thread clamping and cutting device for an embroidery machine includes: The wire clamping assembly, the elastic force applied to the wire clamping assembly keeps the wire clamping opening of the wire clamping assembly in a normally closed state; A wire cutting assembly having an openable and closable wire cutting port; The linkage and the action drive are included. The action drive drives the wire cutting assembly through the linkage to control the opening and closing of the wire cutting port. During the opening of the wire cutting port, the linkage can drive the wire clamping assembly to open the wire clamping port.

[0005] Furthermore, the wire clamping assembly is located directly above the wire cutting assembly.

[0006] Furthermore, the wire clamping assembly includes a hinged active clamping arm and a driven clamping arm, which are linked by a gear pair.

[0007] Furthermore, the wire cutting assembly includes fixed scissors and hinged movable scissors, with a linkage connected to the movable scissors. The linkage drives the active clamping arm to open the wire clamping opening.

[0008] Furthermore, the motion drive component is a translation drive mechanism that drives the linkage component to reciprocate. When the linkage component moves forward, it drives the wire cutting port to open.

[0009] Furthermore, it also includes a movable frame for mounting the wire clamping assembly, the wire cutting assembly, and the actuation drive, with a tension spring connecting the active clamping arm to the movable frame.

[0010] Furthermore, the movable rack has a wire stop block located above the wire clamping assembly.

[0011] Furthermore, it also includes a lifting frame that slides with the movable frame, and a moving drive mechanism is connected between the movable frame and the lifting frame.

[0012] Furthermore, it also includes a connecting frame that is slidably connected to the lifting frame, and a lifting drive mechanism is connected between the lifting frame and the connecting frame.

[0013] Compared with the prior art, the beneficial effects of this application are: In this application, by using a separate linkage component, the actions of opening the wire cutting port and opening the wire clamping port can be driven. Compared with the linkage component, the structure is simpler and the size is smaller. Attached Figure Description

[0014] The accompanying drawings, which form part of this application, are used to provide a further understanding of this application. The illustrative embodiments of this application and their descriptions are used to explain this application and do not constitute an undue limitation of this application.

[0015] Figure 1 This is a schematic diagram of the structure of this application. Figure 1 .

[0016] Figure 2 This is a schematic diagram of the structure of this application. Figure 2 .

[0017] Figure 3 For the purposes of this application Figure 2 A magnified schematic diagram of the structure at point A in the diagram.

[0018] Figure 4 This is a schematic diagram of the structure of this application. Figure 3 .

[0019] Figure 5 This is a schematic diagram illustrating the installation of the fixed scissors in this application.

[0020] Explanation of reference numerals in the attached drawings: 1-Connecting frame; 2-Lifting frame; 3-Lifting drive mechanism; 4-Moving frame; 41-Wire stop block; 5-Moving drive mechanism; 6-Wire clamping assembly; 61-Active clamping arm; 611-Clamping arm drive arm; 62-Driven clamping arm; 7-Wire cutting assembly; 71-Moving scissors; 711-Scissors drive arm; 72-Fixed scissors; 721-Limiting block; 8-Linking component; 81-Support arm; 9-Action drive component; 10-Tension spring. Detailed Implementation

[0021] To make the objectives, technical solutions, and advantages of this application clearer, the application will be further described in detail below with reference to the embodiments and accompanying drawings. Here, the illustrative embodiments and their descriptions are used to explain this application, but are not intended to limit it.

[0022] refer to Figures 1 to 5 ,like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, this embodiment provides an integrated thread clamping and cutting device for an embroidery machine, including a thread clamping assembly 6, a thread cutting assembly 7, a linkage 8, and an action drive 9. An elastic force applied to the thread clamping assembly 6 keeps its clamping opening normally closed. The thread cutting assembly 7 has an openable and closable cutting opening. The action drive 9 drives the thread cutting assembly 7 via the linkage 8 to control the opening and closing of the cutting opening. During the opening of the cutting opening, the linkage 8 drives the thread clamping assembly 6 to open the clamping opening so that the thread or rope to be cut can enter. In use, by separating the linkage 8 from the thread clamping assembly 6, the clamping opening can lag behind the cutting opening in opening. By setting an elastic force, the clamping opening will gradually and automatically close synchronously during the initial closing stage of the cutting opening, ensuring that the clamping opening is in a stable clamping state when cutting the thread.

[0023] In this embodiment, the wire clamping assembly 6 is located directly above the wire cutting assembly 7. Compared to the arrangement where the wire clamping assembly 6 and the wire cutting assembly 7 are set at an angle, this arrangement occupies less space.

[0024] In this embodiment, the wire clamping assembly 6 includes an active clamping arm 61 and a driven clamping arm 62 that are hinged together. The active clamping arm 61 and the driven clamping arm 62 are linked by a gear pair to ensure the synchronization of the actions of the active clamping arm 61 and the driven clamping arm 62, and the structure is simple.

[0025] The wire clamping assembly 6 may also include two sliding clamping arms connected between the two clamping arms, and the linkage 8 has a drive cone that can be inserted between the two clamping arms.

[0026] In this embodiment, the wire cutting assembly 7 includes a fixed scissors 72 and a hinged movable scissors 71. The linkage 8 is connected to the movable scissors 71, and the linkage 8 drives the active clamping arm 61 to open the wire clamping opening.

[0027] Specifically, the movable scissors 71 has a scissor drive arm 711, and the scissor drive arm 711 has a pin. The pin engages with the slot on the linkage 8 to prevent jamming and ensure that the linkage 8 and the wire cutting assembly 7 are always in a follow-up state, so that the action of the wire cutting assembly 7 remains controllable and prevents the wire cutting assembly 7 from opening or closing prematurely due to external force. The active clamping arm 61 has a clamping arm drive arm 611. When the linkage 8 and the clamping arm drive arm 611 come into contact, the clamping port is driven to open.

[0028] In this embodiment, the motion drive 9 is a translation drive mechanism that drives the linkage 8 to reciprocate. When the linkage 8 moves forward, it drives the wire cutting port to open.

[0029] Specifically, the linkage 8 is located on the side of the driven clamping arm 62 away from the active clamping arm 61, and also on the side of the fixed scissors 72 away from the movable scissors 71. The scissor drive arm 711 passes over the fixed scissors 72, and the clamping arm drive arm 611 extends toward the linkage 8. The support arm 81 of the linkage 8, which acts on the clamping arm drive arm 611, is located behind the clamping arm drive arm 611. The clamping arm drive arm 611 and the wire clamping port are located on both sides of the hinge of the active clamping arm 61, so that the wire cutting port is opened when the linkage 8 moves forward. The linkage 8 is used to realize the driving linkage of the wire clamping assembly 6 and the wire cutting assembly 7, so that the linkage structure of multiple structures cooperates. The linkage of this application makes the transmission structure simple, small in size and compact in structure.

[0030] To facilitate modular installation, the embroidery machine's integrated wire clamping and cutting device also includes a movable frame 4 for mounting the wire clamping assembly 6, the wire cutting assembly 7, and the actuation drive 9. A tension spring 10 is connected between the active clamping arm 61 and the movable frame 4, and the deformation of the tension spring 10 provides the elastic force to drive the wire clamping assembly 6 to automatically reset.

[0031] To facilitate the assembly and disassembly of the fixed scissors 72, a limiting block 721 is provided on the fixed scissors 72. A slot that cooperates with the limiting block 721 is provided on the bottom surface of the movable frame 4. The lower surface of the fixed scissors 72 is flush with the bottom surface of the movable frame 4. The limiting block 721 cooperates with the slot to limit the fixed scissors 72, making the fixed scissors 72 easy to assemble and disassemble and its position stable.

[0032] In this embodiment, in order to ensure that the wire / rope entering the clamping opening can stay stably in the clamping opening for tightening and fixing, the movable frame 4 has a wire blocking block 41 located above the wire clamping assembly 6.

[0033] Specifically, the upper baffle of the wire stop block 41 spans above the active clamping arm 61 and the driven clamping arm 62. The upper baffle of the wire stop block 41 blocks the wire / rope from sliding away from the clamping opening, preventing the wire / rope from being misaligned and unable to be clamped. The upper baffle is connected to the main body of the movable frame 4 through the fixing part. The fixing part of the wire stop block 41 is located between the active clamping arm 61 and the driven clamping arm 62. The limiting of the fixing part of the wire stop block 41 prevents the wire clamping assembly 6 from deflecting when resetting under the action of elastic force, ensuring that the reset position of the clamping opening is stable.

[0034] In this embodiment, in order to complete the thread taking and feeding and realize continuous embroidery work, the embroidery machine's integrated thread clamping and cutting device also includes a lifting frame 2 that slides with the moving frame 4. A moving drive mechanism 5 is connected between the moving frame 4 and the lifting frame 2. The moving drive mechanism 5 is used to drive the moving frame 4 forward and backward, thereby driving the thread clamping assembly 6 and the thread cutting assembly 7 forward and backward.

[0035] In this embodiment, in order to facilitate the disassembly and assembly of the overall module and the coordination of thread picking and feeding actions, the embroidery machine's integrated thread clamping and cutting device also includes a connecting frame 1 that is slidably connected to the lifting frame 2, and a lifting drive mechanism 3 is connected between the lifting frame 2 and the connecting frame 1.

[0036] In this embodiment, the lifting drive mechanism 3, the moving drive mechanism 5, and the action drive component 9 are all preferably cylinders.

[0037] In operation, when thread clamping is required, the actuating drive 9 drives the linkage 8 forward, and the thread cutting assembly 7 moves before the thread clamping assembly 6. After the linkage 8 comes into contact with the active clamping arm 61 of the thread clamping assembly 6, the thread cutting assembly 7 and the thread clamping assembly 6 move synchronously. When the thread clamping opening and the thread cutting opening are in place, the moving frame 4 moves forward under the drive of the moving drive mechanism 5, moving the thread clamping opening and the thread cutting opening to the embroidery thread or cord. Then, the linkage 8 moves backward under the action of the actuating drive 9, and the thread clamping opening and the thread cutting opening move simultaneously. When the linkage 8 separates from the active clamping arm 61, the thread clamping opening completes the thread clamping. The linkage 8 continues to move backward, driving the thread cutting assembly 7 to continue moving and complete the thread cutting action. The actions of the thread clamping opening and the thread cutting opening overlap for a short time, which can improve the efficiency of the operation compared to sequential actions.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this application. Those skilled in the art should understand that this application is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this application. Various changes and modifications can be made to this application without departing from the spirit and scope thereof, and all such changes and modifications fall within the scope of this application as claimed. The scope of protection of this application is defined by the appended claims and their equivalents.

Claims

1. A device for embroidery machines that integrates thread clamping and thread cutting, characterized in that, include: The wire clamping assembly (6) is provided with an elastic force that keeps the wire clamping opening of the wire clamping assembly (6) normally closed. A wire cutting assembly (7) having an openable and closable wire cutting port; Linkage component (8) and action drive component (9). The action drive component (9) drives the wire cutting assembly (7) to control the opening and closing of the wire cutting port through the linkage component (8). During the opening of the wire cutting port, the linkage component (8) can drive the wire clamping assembly (6) to open the wire clamping port.

2. The integrated thread clamping and cutting device for embroidery machines according to claim 1, characterized in that, The wire clamping assembly (6) is located directly above the wire cutting assembly (7).

3. The integrated thread clamping and cutting device for embroidery machines according to claim 2, characterized in that, The clamping assembly (6) includes a hinged active clamping arm (61) and a driven clamping arm (62), which are linked by a gear pair.

4. The integrated thread clamping and cutting device for embroidery machines according to claim 3, characterized in that, The wire cutting assembly (7) includes a fixed scissor (72) and a hinged movable scissor (71). The linkage (8) is connected to the movable scissor (71). The linkage (8) drives the active clamping arm (61) to open the wire clamping port.

5. The integrated thread clamping and cutting device for an embroidery machine according to claim 4, characterized in that, The motion drive component (9) is a translation drive mechanism that drives the linkage component (8) to reciprocate. When the linkage component (8) moves forward, it drives the wire cutting port to open.

6. The integrated thread clamping and cutting device for an embroidery machine according to claim 3, characterized in that, It also includes a movable frame (4) for mounting the wire clamping assembly (6), the wire cutting assembly (7) and the actuation drive (9), and a tension spring (10) is connected between the active clamping arm (61) and the movable frame (4).

7. The integrated thread clamping and cutting device for an embroidery machine according to claim 6, characterized in that, The movable frame (4) has a wire stop block (41) located above the wire clamping assembly (6).

8. The integrated thread clamping and cutting device for an embroidery machine according to claim 6, characterized in that, It also includes a lifting frame (2) that slides with the movable frame (4), and a moving drive mechanism (5) is connected between the movable frame (4) and the lifting frame (2).

9. The integrated thread clamping and cutting device for an embroidery machine according to claim 8, characterized in that, It also includes a connecting frame (1) that is slidably connected to the lifting frame (2), and a lifting drive mechanism (3) is connected between the lifting frame (2) and the connecting frame (1).

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