Thread trimming device for screw rod of embroidery machine

Abstract

The utility model discloses a screw rod thread trimming device of an embroidery machine, which comprises a screw rod moving device and is connected with a rotating shuttle thread trimming device through a pull rod, the lead screw moving device comprises a lead screw moving box body, a lead screw is arranged in the lead screw moving box body, and one end of the lead screw is connected with a motor through a lead screw transmission device; a sliding block is arranged in the middle of the lead screw, a linear bearing is arranged in the sliding block and connected with a guide rod fixed in the lead screw movable box, and a pull rod shaft is arranged in the sliding block and fixedly connected with a pull rod; the rotating shuttle thread trimming device comprises a rotating shuttle box body, the rotating shuttle box body is provided with a fixed cutter and a movable cutter, and the movable cutter is connected with a pull rod through a thread trimming transmission device. According to the utility model, through the transmission of the lead screw, one pull rod synchronously controls a plurality of thread trimming devices to trim threads synchronously.

Description

Technical Field

[0001] This utility model relates to the technical field of embroidery machines, specifically to a thread cutting device for embroidery machine screws. Background Technology

[0002] Patent No. 201610079166.6 discloses an automatic thread-cutting device for an embroidery machine. The motor is directly connected to the thread-cutting device. However, the embroidery machine consists of multiple machine heads, and each machine head needs to be equipped with a motor to achieve automatic thread cutting, which is quite complicated. Utility Model Content

[0003] This utility model discloses a thread-cutting device for an embroidery machine, which achieves synchronous thread cutting by multiple thread-cutting devices controlled by a single lever through thread screw transmission. The specific technical solution is as follows:

[0004] A thread-cutting device for an embroidery machine includes a thread-moving device for the thread rod and is connected to multiple rotary hook thread-cutting devices via a pull rod.

[0005] The lead screw moving device includes a lead screw moving housing, in which a lead screw is mounted via a bearing, and one end of the lead screw is connected to a motor via a lead screw transmission device; a slider is provided in the middle of the lead screw, and a linear bearing is provided in the slider to connect to a guide rod fixed in the lead screw moving housing, and a pull rod shaft is provided in the slider to fix and connect to a pull rod.

[0006] The rotary shuttle thread cutting device includes a rotary shuttle box, which is equipped with a fixed blade and a movable blade. The movable blade is connected to a pull rod through a thread cutting transmission device.

[0007] The wire cutting transmission device includes a connecting block fixedly connected to the pull rod, and a rotating cutter shaft connected to the shuttle box via short connecting rod A and short connecting rod B in sequence and connected by bearings; the end of the rotating cutter shaft is connected to a movable cutter, which cooperates with the fixed cutter on the shuttle box.

[0008] The lead screw drive device includes a pulley A fixed to the end of the lead screw and a pulley B fixed to the end of the motor drive shaft, and are connected by a belt.

[0009] The front section of the lead screw is connected to the movable housing of the lead screw via a bearing, and the rear section is connected to the bearing housing via two bearings. The bearing housing is fixed to the movable housing of the lead screw. A clamping ring is also provided at the rear end of the lead screw next to the inner ring of the bearing.

[0010] There are two guide rods, which are symmetrically arranged on both sides below the lead screw.

[0011] A bushing is provided at the point where the pull rod shaft passes through the movable housing of the lead screw.

[0012] The utility model discloses a motor positive rotation or reverse rotation, through the screw rod transmission drive screw rod positive rotation or reverse rotation, make the slider along the screw rod and two guide rods left and right slide, thereby make the fixed in the slider pull rod axle drive pull rod left and right pull, pull rod draw the shearing transmission device connecting block of multiple rotating shuttle thread trimming device, simultaneously draw short connecting rod A and short connecting rod B activity, and drive rotary knife shaft positive rotation or reverse rotation, thereby make the movable knife and fixed knife do shearing action, realize automatic thread trimming. BRIEF DESCRIPTION OF DRAWINGS

[0013] Figure 1 It is structure schematic drawing of the utility model;

[0014] Figure 2 It is the front view of screw rod activity device;

[0015] Figure 3 It is structure schematic drawing of screw rod activity device;

[0016] Figure 4 It is structure schematic drawing of rotating shuttle thread trimming device. DETAILED DESCRIPTION

[0017] As Figures 1-4 Shown, a kind of embroidery machine screw rod thread trimming device, including screw rod activity device 1, and connect multiple rotating shuttle thread trimming device 2 by pull rod 3;

[0018] The screw rod activity device 1, including screw rod activity box body 1-1, screw rod 1-2 front section is connected to screw rod activity box body 1-2 by a bearing 1-3, rear section is connected to bearing seat 1-4 by two bearings 1-3, and bearing seat 1-4 is fixed to screw rod activity box body 1-1;Screw rod 1-2 rear end is also provided with clamping ring 1-5 next to bearing inner ring;Screw rod 1-2 front end is connected to stepper motor 1-6 by screw rod transmission device;Screw rod 1-2 middle part is provided with slider 1-7, and two symmetric linear bearings 1-8 in slider 1-7 are movably connected with two guide rods 1-9 fixed in screw rod activity box body 1-1, and pull rod axle 1-10 fixedly connected with pull rod 3 is arranged in slider 1-7, and shaft sleeve 1-11 is arranged at the place where pull rod axle 1-10 penetrates screw rod activity box body 1-1.

[0019] The screw rod transmission device includes pulley A 1-12 fixed to the front end of screw rod 1-2 and pulley B 1-13 fixed to the end of transmission shaft of motor 1-6, and is connected by belt 1-14.

[0020] The rotating-shuttle thread cutting device 2 comprises a rotating-shuttle box 2-1, a fixed cutter 2-2 and a movable cutter 2-3, the movable cutter 2-3 is connected with a pull rod 3 through a thread cutting transmission device; the thread cutting transmission device comprises a connecting block 2-4 fixedly connected with the pull rod 3, and is sequentially connected with a short connecting rod A 2-5 and a short connecting rod B 2-6, and is movably connected with a rotating cutter shaft 2-7 arranged in the rotating-shuttle box 2-1 and connected with a bearing; the rotating cutter shaft 2-7 is connected with the movable cutter 2-3 at the end and cooperates with the fixed cutter 2-2 on the rotating-shuttle box 2-1.

[0021] The utility model discloses a stepping motor 1-6 normal rotation or reverse rotation, through screw rod transmission device transmission screw rod 1-2 normal rotation or reverse rotation, make the slider 1-7 along screw rod 1-2 and two guide rod 1-9 left and right slide, thereby make fixed in the slider 1-7 pull rod axle 1-10 drive pull rod 3 left and right pull, pull rod 3 draw a plurality of rotating-shuttle thread cutting device 2's thread cutting transmission device connecting block 2-4, simultaneously draw short connecting rod A 2-5 and short connecting rod B 2-6 activity, and drive rotating cutter shaft 2-7 normal rotation or reverse rotation, thereby make movable cutter 2-3 with fixed cutter 2-2 do shearing action, realize automatic thread cutting.

[0022] The above only is the preferred implementation mode of the utility model and is not used to limit the utility model, for the person skilled in the art, the utility model can have various changes and changes. Any modification, equivalent replacement, improvement etc. that is made in the spirit and principle of the utility model should be included in the protection scope of the utility model.

Claims

1. A thread-cutting device for an embroidery machine screw, characterized in that, It includes a lead screw moving device, which is connected to a rotary hook thread cutting device via a pull rod; The lead screw moving device includes a lead screw moving housing, a lead screw is installed inside the lead screw moving housing, one end of the lead screw is connected to a motor through a lead screw transmission device; a slider is installed in the middle of the lead screw, a linear bearing is installed inside the slider to connect to a guide rod fixed inside the lead screw moving housing, and a pull rod shaft is installed inside the slider to fix and connect to a pull rod. The rotary shuttle thread cutting device includes a rotary shuttle box, which is equipped with a fixed blade and a movable blade. The movable blade is connected to a pull rod through a thread cutting transmission device.

2. The embroidery machine thread cutting device according to claim 1, characterized in that, The wire cutting transmission device includes a connecting block fixedly connected to the pull rod, and a rotating cutter shaft housed in the shuttle box is movably connected in sequence through short connecting rod A and short connecting rod B; the end of the rotating cutter shaft is connected to a movable cutter, which cooperates with a fixed cutter on the shuttle box.

3. The embroidery machine thread cutting device according to claim 1, characterized in that, The lead screw drive device includes a pulley A fixed to the end of the lead screw and a pulley B fixed to the end of the motor drive shaft, and are connected by a belt.

4. The embroidery machine thread cutting device according to claim 1, characterized in that, The front section of the lead screw is connected to the movable housing of the lead screw via a bearing, and the rear section is connected to the bearing seat via two bearings, with the bearing seat fixed to the movable housing of the lead screw.

5. The embroidery machine thread cutting device according to claim 1, characterized in that, There are two guide rods, which are symmetrically arranged on both sides below the lead screw.

6. The embroidery machine thread cutting device according to claim 1, characterized in that, A bushing is provided at the point where the pull rod shaft passes through the movable housing of the lead screw.

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