Thread hooking transmission device of embroidery machine

Abstract

A thread hooking transmission device of an embroidery machine comprises a swing rod, a thread hooking pull rod, a hoop, a transmission rod, a stepping motor and a base, the stepping motor is installed on the base, the swing rod is rotationally installed on the base through a rotating shaft, the thread hooking pull rod is connected with the swing rod, the hoop is fixed to an output shaft of the stepping motor, and rotating pieces are installed at the two ends of the transmission rod respectively. The transmission rod is connected with the hoop and the swing rod through the rotating piece, the swing angle of the swing rod is controlled by controlling the rotating angle of the stepping motor, and therefore the movement amount of the thread hooking pull rod is changed.

Description

TECHNICAL FIELD

[0001] The utility model belongs to embroidery machine technical field, and specifically relates to a embroidery machine hooking transmission device BACKGROUND

[0002] At present, for the embroidery machine industry, when starting to embroider another graphic unit, the face thread and the bottom thread under the embroidery material need to be cut. In the cutting process, hooking knife and hooking rod driving device and other mechanical structures are needed. The application number 201910180158.4 discloses a kind of hooking device of embroidery machine multi-point feedback, including hooking rod driving mechanism, hooking rod, sensing mechanism;Hooking rod driving mechanism is connected with hooking rod transmission, for driving hooking rod action, sensing mechanism is used to sense two positions in the hooking stroke from hooking original point position to the maximum position of hooking knife extension, one of the positions is hooking original point position, and control hooking motor in hooking rod driving mechanism according to the opening and closing of hooking original point position and according to other position pause. The above-mentioned hooking device mainly has the following deficiencies, (1) in the working process of driving mechanism, the sliding friction between swing lever and pin shaft reduces the service life of swing lever;(2) the eccentric wheel for driving swing lever to swing is fixed on the motor in the form of locking screw, which causes the eccentric wheel to be easily detached;(3) the sensor is used to control the pause of hooking rod at two fixed stroke positions, when the working position of hooking rod needs to be adjusted, the position of sensor needs to be adjusted, and the convenience of adjustment is poor. SUMMARY

[0003] In view of the above deficiencies, the technical problem to be solved by the utility model is to provide an embroidery machine hooking transmission device for improving the use stability of the transmission device and improving the convenience of adjusting the working position of the hooking rod according to the working requirement.

[0004] To solve the above technical problems, the utility model adopts the technical scheme that,

[0005] An embroidery machine hooking transmission device, comprising a swing lever and a hooking rod, the hooking rod is connected with the swing lever, and the hooking rod is driven to move by the swing lever;It also includes a clamp, a transmission rod and a stepper motor for controlling the rotation angle of the motor, the clamp is fixed on the output shaft of the stepper motor, both ends of the transmission rod are respectively provided with rotating parts, the transmission rod is connected with the clamp and the swing lever through the rotating parts, and the swing angle of the swing lever is controlled by controlling the rotation angle of the stepper motor.

[0006] As a preferred scheme of the utility model, the embroidery machine hooking transmission device further comprises a detection sensor for detecting whether the connection between the clamp and the stepper motor is invalid.

[0007] As a preferred scheme of the utility model, the detection sensor is matched with the line hooking pull rod.

[0008] As a preferred scheme of the utility model, the line hooking pull rod is provided with a baffle, and the baffle is matched with the detection sensor.

[0009] As a preferred scheme of the utility model, two rotating parts on the transmission rod are respectively provided with transmission pins, the middle part of the transmission pin is provided with a limiting part, and the transmission pin is limitedly installed in the rotating part through the limiting part.

[0010] As a preferred scheme of the utility model, the limiting part comprises a limiting section and an adjusting section, the limiting section is abutted with the rotating part, and the adjusting section is abutted with the hoop or the swing rod.

[0011] As a preferred scheme of the utility model, the hoop is provided with a connecting part, and the transmission rod is connected with the hoop through the connecting part.

[0012] As a preferred scheme of the utility model, the swing rod is provided with a connecting rod, and the swing rod is connected with the line hooking pull rod through the connecting rod.

[0013] As a preferred scheme of the utility model, the swing rod is provided with a mounting groove, and the connecting rod is positioned and installed on the swing rod through the mounting groove.

[0014] As a preferred scheme of the utility model, the swing rod is provided with a groove for connecting with the transmission rod, and the groove and the mounting groove are arranged on the same side of the swing rod.

[0015] As a preferred scheme of the utility model, one side of the swing rod is provided with an arc-shaped groove, and the arc-shaped groove is matched with the line hooking pull rod.

[0016] The utility model discloses beneficial effects are, (1) the swing amount of swing rod is controlled through the stepping motor, thereby improving the convenience of embroidery machine line hooking mechanism stroke adjustment.

[0017] (2) the hoop is connected with the stepping motor, the connecting area of the hoop and the motor shaft of the stepping motor is increased, thereby preventing the separation of the transmission structure and the output shaft of the stepping motor, and improving the use stability of the device.

[0018] (3) the power on the hoop is transmitted to the swing rod through the transmission rod, the stability of power transmission is improved, and the transmission rod is connected with the transmission rod and the swing rod through the rotating part respectively, and the service life of the component is improved. ACCURACY OF DRAWINGS

[0019] Figure 1 It is the structural schematic diagram of the device.

[0020] Figure 2 It is Figure 1Structure diagram after rotating by a certain angle.

[0021] Figure 3 Structure diagram after hiding the stepping motor and the base of the device.

[0022] Figure 4 Structure diagram of the swing rod.

[0023] Figure 5 Sectional view of the swing rod.

[0024] Figure 6 Structure diagram of the transmission pin.

[0025] Label: swing rod 1, mounting groove 1-1, groove 1-2, arc-shaped groove 1-3, hooking line pull rod 2, clamp 3, connecting part 3-1, transmission rod 4, stepped hole 4-1, limiting screw 4-2, stepping motor 5, rotating part 6, detection sensor 7, baffle 8, transmission pin 9, limiting section 9-1, adjusting section 9-2, first transmission pin 9-3, second transmission pin 9-4, connecting rod 10, base 11, U-shaped support 12, rotating shaft assembly 13, rotating shaft bearing 13-1, connecting screw 13-2, mounting column 13-3. DETAILED DESCRIPTION

[0026] The utility model will be further described below in combination with the drawings.

[0027] A kind of embroidery machine hooking line transmission device, including swing rod 1, hooking line pull rod 2, clamp 3, transmission rod 4, stepping motor 5 and base 11, stepping motor 5 is installed on base 11, swing rod 1 is installed on base 11 by rotating shaft rotation, hooking line pull rod 2 is connected with swing rod 1, clamp 3 is fixed on the output shaft of stepping motor 5, the both ends of transmission rod 4 are respectively installed with rotating part 6, transmission rod 4 is connected with clamp 3, swing rod 1 by rotating part 6, swing rod 1 swing angle is controlled by controlling the rotation angle of stepping motor 5, to change the movement of hooking line pull rod 2.

[0028] In the embodiment, stepping motor 5 drives clamp 3 to rotate, since one end of transmission rod 4 is installed on clamp 3 by rotating shaft rotation, when clamp 3 rotates, the end of transmission rod 4 is swung around the motor shaft of stepping motor 5, so that transmission rod 4 moves, swing rod 1 swings under the action of transmission rod 4, to drive hooking line pull rod 2 to move, the rotation angle of output shaft of stepping motor 5 can be controlled by electric control system, the movement of transmission rod 4 is changed by controlling the rotation amount of stepping motor 5, to change the swing angle of swing rod 1, to realize the adjustment of the movement of hooking line pull rod 2, facilitate the formation of hooking mechanism and the control adjustment of original point, improve the adjustment convenience of hooking mechanism.

[0029] As a preferred embodiment, the rotating member 6 is a bearing, and a transmission pin 9 is installed in each of the two rotating members 6, the transmission pin 9 including a first transmission pin 9-3 and a second transmission pin 9-4, the first transmission pin 9-3 being connected with the transmission rod 4 through the hoop 3, and the second transmission pin 9-4 being connected with the transmission rod 4 through the swing rod 1, the first transmission pin 9-3 and the second transmission pin 9-4 being similar in structure, each of which is provided with a limiting portion in the middle part, and the first transmission pin 9-3 and the second transmission pin 9-4 are installed in the rotating members 6 on both sides of the transmission rod 4 through the limiting portions; preferably, the first transmission pin 9-3 and the second transmission pin 9-4 are only different in the length of the pin shaft on both sides of the limiting portion.

[0030] The limiting portion includes a limiting segment 9-1 and an adjusting segment 9-2, the limiting segment 9-1 abutting against the inner ring of the rotating member 6, and the diameter of the limiting segment 9-1 being smaller than the outer diameter of the bearing inner ring of the rotating member 6, and the adjusting segment 9-2 abutting against the hoop 3 or the swing rod 1, and the adjusting segment 9-2 being in a hexagonal structure, so as to be fixed by a wrench, and thus a nut is installed on the transmission pin 9.

[0031] Both ends of the transmission pin 9 are provided with external threads, for installing a nut on the transmission pin 9, so as to install the transmission rod 4 and the hoop 3 on both ends of the first transmission pin 9-3, and install the transmission rod 4 and the swing rod 1 on both ends of the first transmission pin 9-3.

[0032] The swing rod 1 is provided with an installation groove 1-1, and the connecting rod 10 is positioned and installed on the swing rod 1 through the installation groove 1-1, and the connecting rod 10 is connected with the line hooking rod 2, and in order to shorten the length of the connecting rod 10, an arc-shaped groove 1-3 is arranged on one side of the swing rod 1, and the arc-shaped groove 1-3 is matched with the line hooking rod 2, that is, the universal joint of the line hooking rod 2 is installed in the arc-shaped groove 1-3.

[0033] The swing rod 1 is provided with a groove 1-2 for connecting with the transmission rod 4, and the groove 1-2 and the installation groove 1-1 are arranged on the side of the swing rod 1 facing the base 11, so that the connecting rod 10 and the second transmission pin 9-4 are installed in the two groove structures, thereby reducing the thickness of the assembly formed after the swing rod, the connecting rod 10 and the second transmission pin 9-4 are assembled, and thus increasing the spacing between the base 11 and the transmission pin 9 and the connecting rod 10.

[0034] The transmission rod 4 is provided with a stepped hole 4-1, and the rotating member 6 is installed in the stepped hole 4-1, and a limiting screw 4-2 is installed on the transmission rod 4, and the limiting screw 4-2 at least partially faces the stepped hole 4-1, so that the rotating member 6 is limited and installed in the stepped hole 4-1 through the limiting screw 4-2.

[0035] The hoop 3 is provided with a connecting portion 3-1, and the transmission rod 4 is connected with the hoop 3 through the connecting portion 3-1.

[0036] The embroidery machine hooking line transmission device further comprises a single detection sensor 7, which is used to detect whether the connection between the hoop 3 and the stepping motor 5 is invalid, that is, whether the stepping motor 5 can drive the hoop 3 to rotate when the stepping motor 5 is working.

[0037] In order to facilitate the detection sensor 7 to detect whether the connection between the hoop 3 and the stepping motor 5 is invalid, in the embodiment, the detection sensor 7 is matched with the hooking line pull rod 2, that is, when the stepping motor 5 is working, whether the hooking line pull rod 2 moves is detected by the detection sensor 7 to infer whether the connection between the hoop 3 and the stepping motor 5 is invalid.

[0038] In some preferred embodiments, the detection sensor 7 is installed on the L-shaped support 12, and the baffle 8 is arranged on the hooking line pull rod 2, the baffle 8 extends into the L-shaped support 12, and the detection sensor 7 is arranged opposite to the baffle 8, the stepping motor 5 drives the hooking line pull rod 2 to reciprocate, so that the baffle 8 moves relative to the detection sensor 7, and the detection sensor 7 can be a distance measuring sensor, whether the hoop 3 is connected with the stepping motor 5 is determined by detecting whether the distance between the baffle 8 and the detection sensor 7 changes.

[0039] A rotating shaft assembly 13 is installed in the middle of the swing rod 1, the rotating shaft assembly 13 comprises a rotating shaft bearing 13-1, a connecting screw 13-2 and an installation column 13-3, the rotating shaft bearing 13-1 is installed in the swing rod 1, the installation column 13-3 is installed in the rotating shaft bearing 13-1, and the connecting screw 13-2 is connected with the installation column 13-3, so that one end of the installation column 13-3 is limited and installed in the rotating shaft bearing 13-1, and the other end of the installation column 13-3 is provided with a screw thread, and the other end of the installation column 13-3 is fixed on the base 11 through a nut.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application; therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0041] Although the corresponding terms of the reference signs in the drawings are used more frequently in the text, the possibility of using other terms is not excluded; the use of these terms is only for the convenience of describing and explaining the essence of the present application; any additional limitation is contrary to the spirit of the present application.

Claims

1. An embroidery machine thread hook transmission device, comprising a swing rod (1) and a thread hook pull rod (2), wherein the thread hook pull rod (2) is connected to the swing rod (1), and the swing rod (1) drives the thread hook pull rod (2) to move; characterized in that: The invention also includes a clamp (3), a transmission rod (4) and a stepper motor (5) for controlling the rotation angle of the motor. The clamp (3) is fixed on the output shaft of the stepper motor (5). Rotating members (6) are respectively installed at both ends of the transmission rod (4). The transmission rod (4) is connected to the clamp (3) and the swing rod (1) through the rotating member (6). The swing angle of the swing rod (1) is controlled by controlling the rotation angle of the stepper motor (5).

2. The thread-hooking transmission device for an embroidery machine according to claim 1, characterized in that: The embroidery machine thread hook transmission device further comprises a detection sensor (7) for detecting whether the connection between the hoop (3) and the stepping motor (5) is invalid.

3. The thread-hooking transmission device for an embroidery machine according to claim 2, characterized in that: The detection sensor (7) is adapted to the line hooking rod (2).

4. The thread-hooking transmission device for an embroidery machine according to claim 1, characterized in that: A transmission pin (9) is installed in each of the two rotating members (6) on the transmission rod (4). A limiting portion is provided in the middle of the transmission pin (9), and the transmission pin (9) is limitedly installed in the rotating member (6) by the limiting portion.

5. The thread-hooking transmission device for an embroidery machine according to claim 4, characterized in that: The limiting portion comprises a limiting section (9-1) and an adjusting section (9-2); the limiting section (9-1) abuts against the rotating member (6); and the adjusting section (9-2) abuts against the clamp (3) or the swing rod (1).

6. The thread hook transmission device for an embroidery machine according to claim 1, characterized in that: The hoop (3) is provided with a connecting portion (3-1), and the transmission rod (4) is connected to the hoop (3) via the connecting portion (3-1).

7. The thread-hooking transmission device for an embroidery machine according to claim 1, characterized in that: A connecting rod (10) is installed on the swing rod (1), and the swing rod (1) is connected to the line hooking rod (2) via the connecting rod (10).

8. The thread-hooking transmission device for an embroidery machine according to claim 7, characterized in that: The swing rod (1) is provided with a mounting groove (1-1), and the connecting rod (10) is positioned and mounted on the swing rod (1) through the mounting groove (1-1).

9. The thread-hooking transmission device for an embroidery machine according to claim 8, characterized in that: The swing rod (1) is provided with a groove (1-2) for connecting with the transmission rod (4), and the groove (1-2) and the mounting groove (1-1) are arranged on the same side of the swing rod (1).

10. The thread-hooking transmission device for an embroidery machine according to claim 1, characterized in that: An arcuate groove (1-3) is provided on one side of the swing rod (1), and the arcuate groove (1-3) is adapted to the line hooking rod (2).

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