CN215404925U

CN215404925U - Thread clamping device of double-needle sewing machine

Info

Publication number: CN215404925U
Application number: CN202120013016.1U
Authority: CN
Inventors: 胡小滨; 陈初喜
Original assignee: Supreme Intelligent Technology Co Ltd
Current assignee: Supreme Intelligent Technology Co Ltd
Priority date: 2021-01-05
Filing date: 2021-01-05
Publication date: 2022-01-04
Anticipated expiration: 2031-01-05

Abstract

The utility model discloses a thread clamping device of a double-needle sewing machine, which comprises an installation support, wherein the installation support is fixed at the bottom of a sewing machine head, and a first air cylinder and a second air cylinder are arranged on the installation support, and the first air cylinder is used for driving a thread hook to perform thread hooking action, and the second air cylinder is used for driving a thread clamping device to perform thread clamping action. The mounting bracket, the first cylinder, the second cylinder and the thread hook are all positioned behind the machine needle, so that the mounting space at the front end of the machine head is saved, and the mounting positions of various parts of the sewing machine head are optimized.

Description

Thread clamping device of double-needle sewing machine

Technical Field

The utility model relates to a thread clamping device of a sewing machine, in particular to a thread clamping device of a double-needle sewing machine.

Background

The utility model 201620375714.5 discloses a side-slipping thread clamping device for a two-needle sewing machine, which comprises a mounting bracket (1) fixedly connected with a sewing machine head, wherein a side-slipping cylinder is fixed on the mounting bracket (1), and a piston rod of the side-slipping cylinder is connected with a thread clamping mounting rack capable of moving transversely; the wire clamping mounting frame is fixedly provided with two wire clamping cylinders, the wire clamping mounting frame is provided with two wire clamping parts, and a wire clamping frame (41) which can be matched with the wire clamping parts to clamp wires is arranged on a piston rod of each wire clamping cylinder. This trapping mechanism sideslips when needs trapping work, and the cylinder that sideslips can send trapping mounting bracket to operating position department, realizes trapping function. When the thread clamping is not needed, the thread clamping mounting frame is conveyed to the standby position on one side of the sewing machine head by the side sliding cylinder, so that the interference of loading and interference to other workpieces is avoided. The thread clamping structure has the defect of occupying the space in front of the machine needle, so that the installation space of other mechanisms of the double-needle sewing machine is insufficient.

Disclosure of Invention

The utility model provides a thread clamping device of a double-needle sewing machine aiming at the current situation of the prior art, a thread clamping structure is arranged behind a needle, and meanwhile, a transmission structure is optimized, and the installation space is reduced.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a double-needle sewing machine's trapping mechanism, includes the installing support, and the installing support is fixed in sewing machine head's bottom, is equipped with on the installing support to be used for driving the wire hook to carry out the first cylinder that the crochet hook moved to and be used for driving the trapping mechanism to carry out the second cylinder that the trapping mechanism moved.

In order to optimize the technical scheme, the utility model also comprises the following improved technical scheme.

The thread clamping device comprises a thread clamping frame corresponding to the needle, wherein a thread clamping block capable of moving up and down and a spring used for keeping the thread clamping block at a thread clamping position are arranged in the thread clamping frame.

The wire clamping block is connected with a driving block, a rotatable driving handle is arranged on the mounting bracket, the driving handle is provided with an end part applying acting force to the driving block, and a piston rod of the second cylinder is connected with the driving handle.

The mounting bracket is provided with a driving rotating shaft driven by a first cylinder; one end of the first connecting rod is connected with the driving rotating shaft, and the other end of the first connecting rod is connected with the middle part of the wire hook; the mounting bracket is provided with a follow-up second rotating shaft; one end of the second connecting rod is connected with the second rotating shaft, and the other end of the second connecting rod is connected with the tail of the wire hook.

Compared with the prior art, the thread clamping device of the double-needle sewing machine has the advantages that the mounting bracket, the first cylinder, the second cylinder and the thread hook are all positioned behind the machine needle, so that the mounting space at the front end of the machine head is saved, and the mounting positions of various parts of the sewing machine head are optimized.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a side view of the thread tension device of fig. 1.

Fig. 3 is a rear view of fig. 2.

Fig. 4 is a schematic structural view of the wire clamping device in fig. 1.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 1 to 4 are schematic structural views of the present invention.

Wherein the reference numerals are: the wire clamping device comprises a mounting bracket 1, a wire hook 2, a first air cylinder 3, a driving rotating shaft 31, a first connecting rod 32, a second rotating shaft 33, a second connecting rod 34, a wire clamping device 4, a wire clamping frame 41, a wire clamping block 42, a spring 43, a driving block 44, a second air cylinder 5 and a driving handle 51.

The thread clamping device of the double-needle sewing machine comprises a mounting bracket 1, wherein the mounting bracket 1 is fixed at the bottom of a sewing machine head, and a first air cylinder 3 for driving a thread hook 2 to perform thread hooking action and a second air cylinder 5 for driving a thread clamping device 4 to perform thread clamping action are arranged on the mounting bracket 1. The mounting bracket 1, the first cylinder 3, the second cylinder 5 and the thread hook 2 are all located behind the machine needle, so that the mounting space at the front end of the machine head is made, and the mounting positions of various parts of the sewing machine head are optimized.

The gripper 4 includes a gripper frame 41 corresponding to the needle. Each needle has a corresponding thread clamping frame 41. The wire clamping frame 41 is provided with a wire clamping block 42 capable of moving up and down and a spring 43 for keeping the wire clamping block 42 at a wire clamping position.

The wire clamping block 42 is connected with a driving block 44, a rotatable driving handle 51 is arranged on the mounting bracket 1, the driving handle 51 is provided with an end part applying acting force to the driving block 44, and a piston rod of the second air cylinder 5 is connected with the driving handle 51.

When the thread clamping action is needed, the driving block 44 can push the thread clamping block 42 to move downwards, the thread hook 2 passes through the gap between the thread clamping block 42 and the thread clamping frame 41 and hooks the thread into the gap, then the driving block 44 returns, and the thread clamping block 42 keeps the thread clamping state under the action of the spring 43.

The mounting bracket 1 is provided with a driving rotating shaft 31 driven by the first cylinder 3; one end of the first link 32 is connected with the driving rotating shaft 31, and the other end is connected with the middle part of the wire hook 2; the mounting bracket 1 is provided with a follow-up second rotating shaft 33; one end of the second link 34 is connected to the second rotating shaft 33, and the other end is connected to the tail of the wire hook 2.

The first cylinder 3 is connected with the driving rotating shaft 31 through a crank, and can drive the driving rotating shaft 31 to rotate. The driving shaft 31 is fixedly connected to the first link 32, and can drive the first link 32 to rotate around the driving shaft 31, so that the hook 2 can pass through the wire clamping frame 41 to hook the wire and retract. The second rotating shaft 33 is connected with the tail end of the wire hook 2 through the second connecting rod 34, so that the posture of the wire hook 2 in the wire hooking process can be adjusted, and the wire hook 2 can penetrate through the wire clamping frame 41 in a parallel mode to hook the wire.

While the preferred embodiments of the present invention have been illustrated, various changes and modifications may be made by one skilled in the art without departing from the scope of the utility model.

Claims

1. The utility model provides a double-needle sewing machine's trapping mechanism, includes installing support (1), characterized by: the mounting bracket (1) is fixed at the bottom of the sewing machine head, and a first air cylinder (3) for driving the thread hook (2) to hook the thread and a second air cylinder (5) for driving the thread clamp (4) to clamp the thread are arranged on the mounting bracket (1); the mounting bracket (1), the first cylinder (3), the second cylinder (5) and the wire hook (2) are all located behind the needle.

2. The thread clamping device as claimed in claim 1, wherein: the thread clamping device (4) comprises a thread clamping frame (41) corresponding to a needle, wherein a thread clamping block (42) capable of moving up and down and a spring (43) used for keeping the thread clamping block (42) at a thread clamping position are arranged in the thread clamping frame (41).

3. The thread clamping device as claimed in claim 2, wherein: the wire clamping block (42) is connected with a driving block (44), a rotatable driving handle (51) is arranged on the mounting bracket (1), the driving handle (51) is provided with an end part applying acting force to the driving block (44), and a piston rod of the second cylinder (5) is connected with the driving handle (51).

4. The thread clamping device as claimed in claim 1, wherein: the mounting bracket (1) is provided with a driving rotating shaft (31) driven by a first cylinder (3); one end of the first connecting rod (32) is connected with the driving rotating shaft (31), and the other end of the first connecting rod is connected with the middle part of the wire hook (2); the mounting bracket (1) is provided with a follow-up second rotating shaft (33); one end of the second connecting rod (34) is connected with the second rotating shaft (33), and the other end is connected with the tail part of the wire hook (2).