Rotating arm movement device

Abstract

The utility model discloses a rotating arm movement device, and relates to the technical field of sewing machines, and the rotating arm movement device comprises a supporting mechanism, a rotating mechanism and a telescopic mechanism. The rotating mechanism is used for driving the rotating arm to rotate and comprises a spline shaft assembly, a synchronous belt assembly and a rotating driving assembly, the spline shaft assembly comprises a spline shaft and a shaft sleeve, the spline shaft is used for installing the rotating arm, can rotate along with the shaft sleeve and can linearly move relative to the shaft sleeve in the axis direction of the shaft sleeve, and the synchronous belt assembly is connected with the shaft sleeve; the rotation driving assembly is connected with the synchronous belt assembly so as to drive the synchronous belt assembly to operate; the telescopic mechanism is used for driving the rotating arm to stretch out and draw back and comprises a spline shaft fixing plate and a telescopic driving assembly, the spline shaft fixing plate is connected with the spline shaft, and the telescopic driving assembly is connected with the spline shaft fixing plate to drive the spline shaft fixing plate and the spline shaft to stretch out and draw back. The rotating arm movement device is simple and compact in structure, small in occupied space, high in stability and low in noise in the operation process.

Description

Technical Field

[0001] The present application relates to the technical field of sewing machines, and in particular to a rotating arm motion device. Background Art

[0002] At present, with the rapid development of the garment industry, more and more sewing machines are equipped with automatic shuttle changing devices, among which the rotating arm motion device is an extremely important device in the automatic shuttle changing device.

[0003] In the existing system, the arm motion device is a device that can realize the rotation and telescopic movement of the arm, and this device is mainly responsible for taking and loading the shuttle. However, with the continuous improvement of the automatic shuttle changing device, various arm motion devices with different structures have emerged. The current arm motion device has a complex structure, a large volume, and poor stability, resulting in a large space occupied by the device and a large noise during operation.

[0004] Therefore, it is necessary for those skilled in the art to provide a rotating arm motion device with a simple and compact structure, high stability and low noise in a timely manner. Utility Model Content

[0005] The purpose of the present application is to provide a rotating arm motion device, which has a simple and compact structure, high stability, and low noise during operation.

[0006] To achieve the above objectives, the present application provides a rotating arm motion device, comprising:

[0007] Support mechanism;

[0008] The rotating mechanism is arranged on the supporting mechanism and is used to drive the rotating arm to rotate, and includes:

[0009] The spline shaft assembly includes a spline shaft and a sleeve. One end of the spline shaft is used to install the swing arm. The spline shaft can rotate with the sleeve and can move along the axis of the sleeve.

[0010] Move linearly relative to the sleeve;

[0011] A timing belt assembly, connected to the shaft sleeve, to drive the spline shaft to rotate;

[0012] The rotating driving assembly is connected to the synchronous belt assembly to drive the synchronous belt assembly to operate;

[0013] The telescopic mechanism is arranged on the supporting mechanism and is used to drive the rotating arm to telescope, and includes:

[0014] A spline shaft fixing plate connected to the other end of the spline shaft;

[0015] The telescopic drive assembly is connected to the spline shaft fixing plate to drive the spline shaft fixing plate and the spline shaft to perform telescopic movement.

[0016] In some embodiments, the telescopic mechanism further comprises:

[0017] A guide shaft is mounted on the supporting mechanism;

[0018] The linear bearing is mounted on the spline shaft fixing plate and cooperates with the guide shaft so that the spline shaft fixing plate moves along the axial direction of the guide shaft.

[0019] In some embodiments, the support mechanism comprises:

[0020] A front fixing plate, used for fixing one end of the guide shaft;

[0021] The rear fixing plate is spaced apart from the front fixing plate and is used for fixing the other end of the guide shaft.

[0022] In some embodiments, the support mechanism further includes a bearing mounting plate, which is disposed between the front fixing plate and the rear fixing plate, and a supporting bearing for supporting the spline shaft is disposed on the bearing mounting plate.

[0023] In some embodiments, a fixing sleeve is provided between the shaft sleeve and the bearing mounting plate to prevent the shaft sleeve from axial movement during rotation.

[0024] In some embodiments, a sensor is installed on the bearing mounting plate, and a sensor sheet is connected to the synchronous belt assembly. The sensor sheet cooperates with the sensor to determine the origin position of the rotary drive assembly.

[0025] In some embodiments, the support mechanism further comprises:

[0026] A rotary drive assembly mounting plate, used for mounting the rotary drive assembly;

[0027] The first mounting base plate is connected between the rotating drive assembly mounting plate and the front fixing plate.

[0028] In some embodiments, the timing belt assembly includes:

[0029] A first synchronous wheel, drivingly connected to the rotary drive assembly;

[0030] A second synchronous wheel is drivingly connected to the shaft sleeve;

[0031] A synchronous belt connecting the first synchronous wheel and the second synchronous wheel;

[0032] A synchronous wheel mounting seat is arranged on the first mounting base plate;

[0033] The synchronous wheel mounting shaft is connected to the first synchronous wheel, and one end of the synchronous wheel mounting shaft extends to one side of the synchronous wheel mounting seat and is connected to the rotation drive component, and the other end of the synchronous wheel mounting shaft extends to the other side of the synchronous wheel mounting seat.

[0034] In some embodiments, the synchronous wheel mounting seat is specifically a U-shaped mounting seat, and a limiting groove for limiting the synchronous wheel mounting seat is provided on the first mounting base plate.

[0035] In some embodiments, a pivot arm clamping ring is provided at one end of the spline shaft, and the pivot arm is mounted on the pivot arm clamping ring.

[0036] Compared with the above background technology, the swing arm motion device provided in the embodiment of the present application is used to drive the swing arm to rotate and telescopic movement, and the swing arm motion device includes a supporting mechanism, a rotating mechanism and a telescopic mechanism. Specifically, the rotating mechanism is arranged on the supporting mechanism, and the rotating mechanism is used to drive the swing arm to rotate. The rotating mechanism includes a spline shaft assembly, a synchronous belt assembly and a rotary drive assembly. The spline shaft assembly includes a spline shaft and a sleeve. One end of the spline shaft is used to install the swing arm. The spline shaft can follow the sleeve to rotate, and the spline shaft can move linearly relative to the sleeve along the axial direction of the sleeve. The synchronous belt assembly is connected to the sleeve to drive the spline shaft to rotate, and the rotary drive assembly is connected to the synchronous belt assembly to drive the synchronous belt assembly to operate; the telescopic mechanism is arranged on the supporting mechanism, and the telescopic mechanism is used to drive the swing arm to telescope. The telescopic mechanism includes a spline shaft fixing plate and a telescopic drive assembly. The spline shaft fixing plate is connected to the other end of the spline shaft, and the telescopic drive assembly is connected to the spline shaft fixing plate to drive the spline shaft fixing plate and the spline shaft to telescopic movement. It can be seen that when the entire device is working, the rotation driving force is provided by the rotation driving assembly, so that the synchronous belt assembly drives the spline shaft assembly and the swing arm to rotate, and the telescopic driving force is provided by the telescopic driving assembly, so that the spline shaft fixing plate, the spline shaft and the swing arm telescopic movement. At the same time, the rotation movement of the swing arm and the telescopic movement of the swing arm are independent movements, that is, the telescopic movement can be started after the swing arm rotates to a fixed position, and the rotation movement can also be started after the swing arm is telescoped to a fixed position. The swing arm motion device configured in this way has a simple and compact structure, occupies a small space, is highly stable, and has low noise during operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0038] Figure 1 This is a schematic diagram of the overall structure of the rotating arm motion device in the embodiment of the present application;

[0039] Figure 2 for Figure 1 A top view of the rotating arm motion device shown.

[0040] in:

[0041] 1. Swivel arm, 2. Front fixed plate, 3. Synchronous belt, 4. Second synchronous wheel, 5. Fixed sleeve, 6. Bearing mounting plate, 7. Sensor, 8. Spline shaft fixed plate, 9. Fixed ring, 10. Telescopic drive assembly, 11. Rear fixed plate, 12. Linear bearing, 13. Guide shaft, 14. Rotary drive assembly, 15. Rotary drive assembly mounting plate, 16. First mounting base plate, 161. Limiting groove, 17. Coupling, 18. Synchronous wheel mounting seat, 19. Spline shaft assembly, 20. Swivel arm clamping ring, 21. Synchronous wheel mounting shaft, 22. First synchronous wheel, 23. Second mounting base plate, 24. Sensor plate. DETAILED DESCRIPTION

[0042] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0043] In order to enable those skilled in the art to better understand the present application, the present application is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0044] It should be noted that the directional words such as "upper end, lower end, left side, right side" described below are all defined based on the drawings in the specification.

[0045] Please refer to Figure 1 and Figure 2 , Figure 1 This is a schematic diagram of the overall structure of the rotating arm motion device in the embodiment of the present application; Figure 2 for Figure 1 A top view of the rotating arm motion device shown.

[0046] The rotating arm movement device provided in the embodiment of the present application is used to drive the rotating arm 1 to rotate and telescopically move. The two ends of the rotating arm 1 can be used to install clamps of different structures for taking and changing shuttle cases to achieve shuttle taking and loading.

[0047] In this embodiment, the rotating arm movement device includes a supporting mechanism, a rotating mechanism and a telescopic mechanism.

[0048] Among them, the rotating mechanism is arranged on the supporting mechanism, and the rotating mechanism is used to drive the rotating arm 1 to rotate. The rotating mechanism includes a spline shaft assembly 19, a synchronous belt assembly and a rotating drive assembly 14. The spline shaft assembly 19 includes a spline shaft and a sleeve. The spline shaft and the sleeve are connected by a spline. One end of the spline shaft is used to install the rotating arm 1. The spline shaft can rotate with the sleeve, and the spline shaft can move linearly relative to the sleeve along the axial direction of the sleeve. The synchronous belt assembly is connected to the sleeve to drive the spline shaft to rotate. The rotating drive assembly 14 is connected to the synchronous belt assembly to drive the synchronous belt assembly to operate; the telescopic mechanism is arranged on the supporting mechanism, and the telescopic mechanism is used to drive the rotating arm 1 to telescope. The telescopic mechanism includes a spline shaft fixing plate 8 and a telescopic drive assembly 10. The spline shaft fixing plate 8 is fixed to the other end of the spline shaft by a fixing ring 9. The telescopic drive assembly 10 is connected to the spline shaft fixing plate 8 to drive the spline shaft fixing plate 8 and the spline shaft to telescope.

[0049] It can be seen that when the entire device is working, the rotational driving force is provided by the rotational driving assembly 14, so that the synchronous belt assembly drives the spline shaft assembly 19 and the swing arm 1 to rotate, and the telescopic driving force is provided by the telescopic driving assembly 10, so that the spline shaft fixing plate 8, the spline shaft and the swing arm 1 can move telescopically.

[0050] At the same time, the rotation movement of the rotating arm 1 and the telescopic movement of the rotating arm 1 are independent movements, that is, the telescopic movement can be started after the rotating arm 1 rotates to a fixed position, or the rotation movement can be started after the rotating arm 1 is telescoped to a fixed position.

[0051] The rotating arm motion device arranged in this way has a simple and compact structure, occupies a small space, is highly stable, and produces little noise during operation.

[0052] Of course, according to actual needs, the above-mentioned rotation drive component 14 can use a motor, and the telescopic drive component 10 can use a cylinder.

[0053] In order to facilitate the guidance of the rotating arm 1 when the rotating arm 1 is telescopic, the telescopic mechanism also includes a guide shaft 13 and a linear bearing 12. Among them, the guide shaft 13 is installed on the support mechanism, and the linear bearing 12 is installed on the spline shaft fixing plate 8. The linear bearing 12 cooperates with the guide shaft 13, so that the spline shaft fixing plate 8 can move along the axial direction of the guide shaft 13.

[0054] In this way, the telescopic driving assembly 10 provides telescopic power to make the spline shaft fixing plate 8, the spline shaft and the rotating arm 1 arranged on the spline shaft move linearly along the extension direction (or axial direction) of the guide shaft 13, thereby realizing the telescopic function of the rotating arm 1.

[0055] In order to facilitate supporting the guide shaft 13, the support mechanism includes a front fixing plate 2 and a rear fixing plate 11, and the two ends of the guide shaft 13 are respectively fixed to the front fixing plate 2 and the rear fixing plate 11. Among them, the front fixing plate 2 is used to fix one end of the guide shaft 13, and the rear fixing plate 11 is spaced apart from the front fixing plate 2, and the rear fixing plate 11 is used to fix the other end of the guide shaft 13. Of course, a second mounting base plate 23 can also be connected between the front fixing plate 2 and the rear fixing plate 11 as a bottom support structure.

[0056] In addition, the telescopic drive assembly 10, that is, the cylinder, is fixed on the rear fixed plate 11, and the output shaft of the cylinder is connected to the spline shaft fixed plate 8. Under the action of the cylinder, the spline shaft fixed plate 8 drives the spline shaft to perform linear reciprocating motion.

[0057] In some embodiments, the support mechanism further includes a bearing mounting plate 6, which is disposed between the front fixing plate 2 and the rear fixing plate 11, and a supporting bearing for supporting the spline shaft is disposed on the bearing mounting plate 6.

[0058] It can be understood that the function of the support bearing is to support the spline shaft when the spline shaft rotates, thereby ensuring the stability and reliability of the operation of the spline shaft and the rotating arm 1 thereon.

[0059] In addition, a fixing sleeve 5 is provided between the shaft sleeve and the bearing mounting plate 6. The two ends of the fixing sleeve 5 along its axial direction respectively abut against the shaft sleeve and the bearing mounting plate 6, so that the shaft sleeve can be limited in the axial direction to prevent the shaft sleeve from axial movement during rotation.

[0060] In order to realize the transmission function, the synchronous belt assembly includes a first synchronous wheel 22, a second synchronous wheel 4 and a synchronous belt 3. Among them, the first synchronous wheel 22 is connected to the rotation drive assembly 14, the second synchronous wheel 4 is connected to the sleeve, and the synchronous belt 3 connects the first synchronous wheel 22 and the second synchronous wheel 4, so that the movement and power of the rotation drive assembly 14 can be transmitted to the spline shaft assembly 19 through the synchronous belt assembly.

[0061] In some embodiments, a sensor 7 is installed on the bearing mounting plate 6 , and a sensor sheet 24 is connected to the synchronous belt assembly. The sensor sheet 24 cooperates with the sensor 7 to determine the origin position of the rotation drive assembly 14 .

[0062] Specifically, the induction sheet 24 can be arranged on the second synchronous wheel 4 of the synchronous belt assembly, and the sensor 7 can be a metal sensor 7. When the induction sheet 24 follows the second synchronous wheel 4 to run to the sensing area that the metal sensor 7 can reach, the metal sensor 7 can identify the induction sheet 24, thereby determining the relevant rotation parameters of the motor. For example, when a failure occurs in the device, the motor can be restored to its origin or initial position through the induction cooperation between the induction sheet 24 and the sensor 7.

[0063] In order to facilitate the installation and support of the rotary drive assembly 14, the support mechanism further includes a rotary drive assembly mounting plate 15 and a first mounting base plate 16. The rotary drive assembly 14 is mounted on the rotary drive assembly mounting plate 15, and the first mounting base plate 16 is connected between the rotary drive assembly mounting plate 15 and the front fixing plate 2.

[0064] In addition, the synchronous belt assembly also includes a synchronous wheel mounting seat 18 and a synchronous wheel mounting shaft 21. The synchronous wheel mounting seat 18 is arranged on the first mounting base plate 16, the synchronous wheel mounting shaft 21 is connected to the first synchronous wheel 22, and one end of the synchronous wheel mounting shaft 21 extends to one side of the synchronous wheel mounting seat 18 and is connected to the output shaft of the rotation drive assembly 14 through the coupling 17, and the other end of the synchronous wheel mounting shaft 21 extends to the other side of the synchronous wheel mounting seat 18.

[0065] In some embodiments, the synchronous wheel mounting seat 18 is specifically a U-shaped mounting seat, and a limiting groove 161 for limiting the synchronous wheel mounting seat 18 is provided on the first mounting base plate 16 .

[0066] In some embodiments, a swing arm clamping ring 20 is provided at one end of the spline shaft, and the swing arm 1 is installed on the swing arm clamping ring 20 .

[0067] In this way, the rotating mechanism is mainly powered by the motor, which transmits the rotating power and motion to the second synchronous wheel 4 through the coupling 17, the synchronous wheel mounting shaft 21, the first synchronous wheel 22, and the synchronous belt 3. The second synchronous wheel 4 is installed on the sleeve of the spline shaft assembly 19, and then drives the spline shaft to rotate. The swivel arm 1 is installed on the swivel arm clamping ring 20 at the end of the spline shaft assembly 19, and the swivel arm 1 rotates synchronously with the spline shaft assembly 19.

[0068] It can be seen that the entire rotating mechanism is driven by a synchronous belt 3, which has the advantages of low noise, high rotation accuracy, high reliability, low cost, and convenient later maintenance compared to gear transmission.

[0069] It should be noted that, in this specification, relational terms such as first and second are merely used to distinguish one entity from other entities, but do not necessarily require or imply any actual relationship or order between these entities.

[0070] The above is a detailed introduction to the arm movement device provided by the present application. This article uses specific examples to illustrate the principle and implementation method of the present application. The above description of the embodiment is only used to help understand the solution and core idea of ​​the present application.

Claims

1. A rotating arm motion device, characterized in that: include: Support mechanism; The rotating mechanism is arranged on the supporting mechanism and is used to drive the rotating arm to rotate, and comprises: A spline shaft assembly, the spline shaft assembly comprising a spline shaft and a sleeve, one end of the spline shaft being used to mount the rotating arm, the spline shaft being able to rotate with the sleeve and to move linearly relative to the sleeve along the axis of the sleeve; A synchronous belt assembly connected to the shaft sleeve to drive the spline shaft to rotate; A rotation driving assembly connected to the synchronous belt assembly to drive the synchronous belt assembly to operate; The telescopic mechanism is arranged on the supporting mechanism and is used to drive the rotating arm to telescope, and comprises: A spline shaft fixing plate connected to the other end of the spline shaft; The telescopic driving assembly is connected to the spline shaft fixing plate to drive the spline shaft fixing plate and the spline shaft to perform telescopic movement.

2. The rotating arm motion device according to claim 1, characterized in that: The telescopic mechanism also includes: A guide shaft, mounted on the support mechanism; A linear bearing is mounted on the spline shaft fixing plate and cooperates with the guide shaft so that the spline shaft fixing plate moves along the axial direction of the guide shaft.

3. The rotating arm motion device according to claim 2, characterized in that: The supporting mechanism comprises: A front fixing plate, used for fixing one end of the guide shaft; The rear fixing plate is spaced apart from the front fixing plate and is used for fixing the other end of the guide shaft.

4. The rotating arm motion device according to claim 3, characterized in that: The support mechanism further comprises a bearing mounting plate, wherein the bearing mounting plate is arranged between the front fixing plate and the rear fixing plate, and a supporting bearing for supporting the spline shaft is arranged on the bearing mounting plate.

5. The rotating arm motion device according to claim 4, characterized in that: A fixing sleeve is arranged between the shaft sleeve and the bearing mounting plate to prevent the shaft sleeve from axial movement during rotation.

6. The rotating arm motion device according to claim 4, characterized in that: The bearing mounting plate is provided with a sensor, the synchronous belt assembly is connected with a sensor sheet, and the sensor sheet cooperates with the sensor to determine the origin position of the rotary drive assembly.

7. The rotating arm motion device according to claim 3, characterized in that: The support mechanism also includes: A rotary drive assembly mounting plate, used for mounting the rotary drive assembly; The first mounting base plate is connected between the rotating drive assembly mounting plate and the front fixing plate.

8. The rotating arm motion device according to claim 7, characterized in that: The synchronous belt assembly comprises: A first synchronous wheel, drivingly connected to the rotary drive assembly; A second synchronous wheel, drivingly connected to the shaft sleeve; A synchronous belt connecting the first synchronous wheel and the second synchronous wheel; A synchronous wheel mounting seat, arranged on the first mounting base plate; A synchronous wheel mounting shaft, wherein the synchronous wheel mounting shaft is connected to the first synchronous wheel, and one end of the synchronous wheel mounting shaft extends to one side of the synchronous wheel mounting seat and is connected to the rotation drive assembly, and the other end of the synchronous wheel mounting shaft extends to the other side of the synchronous wheel mounting seat.

9. The rotating arm motion device according to claim 8, characterized in that: The synchronous wheel mounting seat is specifically a U-shaped mounting seat, and the first mounting base plate is provided with a limiting groove for limiting the synchronous wheel mounting seat.

10. The rotating arm motion device according to any one of claims 1 to 9, characterized in that: One end of the spline shaft is provided with a swing arm clamping ring, and the swing arm is installed on the swing arm clamping ring.

Images