Rotary machine head and template sewing machine thereof

Abstract

The utility model discloses a rotating machine head and a template sewing machine thereof, relates to the technical field of template sewing machines, and aims to solve the problem that a driven wheel of an existing rotating machine head is easy to abrade. The rotating machine head comprises a machine head rotating seat, and the machine head rotating seat is provided with a rotating motor and a synchronous belt transmission assembly connected with the rotating motor; the synchronous belt transmission assembly is connected with the machine head below the machine head rotating seat through a first bearing and comprises a driving wheel, a driven wheel and a synchronous belt wound around the peripheries of the driving wheel and the driven wheel, the driving wheel is connected with a motor shaft of the rotating motor, and the two ends of the driven wheel are provided with a first extending part and a second extending part correspondingly; the first extension part is connected with the machine head through the first bearing, the bearing assembly is arranged on the periphery of the second extension part, the driven wheel is fixed through cooperation of the bearing assembly and the first bearing, the driven wheel can be prevented from being abraded due to single-side stress of the synchronous belt, and the service life of the driven wheel is indirectly prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of template sewing machines, and more particularly to a rotary machine head and a template sewing machine thereof. Background Art

[0002] A sewing machine uses one or more threads to create one or more stitches on a material, interweaving or stitching one or more layers of material. It can sew fabrics such as cotton, linen, wool, and synthetic fibers, as well as products such as leather, plastic, and paper. The stitches are neat, beautiful, smooth, and firm, and the machines are fast and easy to use.

[0003] A template sewing machine refers to a sewing device that combines clothing template CAD software, clothing template sewing CAD software and advanced CNC technology to fully automatically apply template production. A template sewing machine generally includes a frame and a machine head, a bottom thread mechanism and a template transmission mechanism arranged on the frame. When working, the template transmission mechanism drives the template to move along a preset trajectory under the control of the controller. With the development of science and technology, a rotating machine head has appeared in sewing template machines.

[0004] Currently, all heavy-duty rotary head template machines utilize a lifting mechanism for their heads. The rotation of the head is typically achieved through bevel gear transmission, synchronous belt transmission, or spur gear transmission. Synchronous belt transmissions offer reliable operation, compact structure, and simple installation and adjustment. However, the driven wheel of existing rotary heads is mounted on the head using only a single-sided bearing. This makes the driven wheel susceptible to wear due to the unilateral force applied by the synchronous belt.

[0005] Therefore, how to solve the problem that the driven wheel of the existing rotary head is easily worn is an urgent problem to be solved by those skilled in the art. Utility Model Content

[0006] In view of this, the purpose of the present invention is to provide a rotary machine head, which solves the problem of wear of the driven wheel due to unilateral force applied by the synchronous belt, thereby indirectly increasing the service life of the driven wheel.

[0007] Another object of the present invention is to provide a template sewing machine comprising the above-mentioned rotary head, which can prevent the driven wheel from being worn.

[0008] In order to achieve the above purpose, the present invention provides the following technical solutions:

[0009] A rotary head, comprising:

[0010] The machine head rotating seat is provided with a rotating motor and a synchronous belt transmission assembly connected to the rotating motor, and the synchronous belt transmission assembly is connected to the machine head below the machine head rotating seat through a first bearing;

[0011] The synchronous belt transmission assembly includes a driving wheel, a driven wheel, and a synchronous belt wrapped around the outer circumference of the driving wheel and the driven wheel. The driving wheel is connected to the motor shaft of the rotating motor. The two ends of the driven wheel are respectively provided with a first extension part and a second extension part. The first extension part is connected to the machine head through a first bearing, and a bearing assembly is provided on the outer circumference of the second extension part.

[0012] Preferably, the bearing assembly includes an annular bearing disposed on the outer periphery of the second extension portion, and also includes a bearing mounting plate for fixing the annular bearing to the machine head rotating seat.

[0013] Preferably, it also includes a tensioning assembly for adjusting the tension of the synchronous belt. The tensioning assembly is arranged at the bottom of the head rotating seat. The head rotating seat is provided with an installation slot hole for installing the tensioning assembly. The output end of the tensioning assembly abuts against the outer ring surface of the synchronous belt.

[0014] Preferably, the tensioning assembly includes a tensioning wheel, a tensioning wheel mounting plate and a tensioning wheel pin. The tensioning wheel mounting plate is a circular plate. Two symmetrically arranged adjustment holes are provided on the tensioning wheel mounting plate. The tensioning wheel mounting plate is fixed to the mounting slot hole by the cooperation of screws and adjustment holes. The tensioning wheel is fixed to the tensioning wheel pin through two second bearings. The outer peripheral surface of the tensioning wheel abuts against the synchronous belt. The tensioning wheel mounting plate is also provided with an eccentric hole, and the tensioning wheel pin is fixed to the eccentric hole.

[0015] Preferably, the second extension portion is provided with a mounting hole for mounting the slip ring assembly, the mounting hole is provided through the driven wheel and the first extension portion, and a limiting step for limiting the slip ring assembly is provided in the mounting hole.

[0016] Preferably, the slip ring assembly includes a rotating shaft and a sliding sleeve sleeved on the outer circumference of the rotating shaft, the sliding sleeve is rotatably connected to the rotating shaft, and the bottom of the rotating shaft is provided with a connecting plate, which is connected to the limiting step.

[0017] Preferably, a stop plate is provided on the top of the sliding sleeve, a slot is provided on the stop plate, a stop sleeve is provided in the slot, and the stop sleeve is fixed to the mounting seat on the top of the machine head rotating seat by a pin.

[0018] Preferably, the motor shaft is rotatably connected to the machine head rotating seat through a third bearing.

[0019] Preferably, the first bearing is a cross roller bearing, which is connected to the machine head rotating seat via a fastener.

[0020] A template sewing machine comprises the rotary head described in any one of the above items.

[0021] The rotating machine head provided by the utility model includes a machine head rotating seat, a machine head, a first bearing, a rotating motor and a synchronous belt transmission assembly. Specifically, a rotating motor and a synchronous belt transmission assembly connected to the rotating motor are provided on the machine head rotating seat. The synchronous belt transmission assembly is connected to the machine head below the machine head rotating seat through the first bearing. The synchronous belt transmission assembly is driven to rotate by the rotating motor, and the machine head is driven to rotate by the synchronous belt transmission assembly.

[0022] The synchronous belt transmission assembly includes a driving wheel, a driven wheel, and a synchronous belt wound around the outer circumference of the driving wheel and the driven wheel. The driving wheel is connected to the motor shaft of the rotating motor, and the rotating motor drives the driving wheel to rotate, so as to drive the synchronous belt wound around the driving wheel and the driven wheel to rotate, so that the synchronous belt drives the driven wheel to rotate. The two ends of the driven wheel are respectively provided with a first extension part and a second extension part. The first extension part is connected to the machine head through a first bearing. The rotation of the driven wheel can drive the machine head to rotate. The outer periphery of the second extension part is provided with a bearing assembly, the upper end of the driven wheel is provided with a bearing assembly, and the lower end of the driven wheel is provided with a first bearing. The driven wheel is fixed by the cooperation of the bearing assembly and the first bearing to ensure stable and reliable rotation of the machine head, avoid wear of the driven wheel due to unilateral force of the synchronous belt, and indirectly increase the service life of the driven wheel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are merely embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying any creative work.

[0024] Figure 1 This is an exploded view of the rotary head provided by the present invention;

[0025] Figure 2 An exploded view of the tensioning assembly provided by the present invention;

[0026] Figure 3 A schematic structural diagram of the driven wheel provided by the utility model;

[0027] Figure 4 This is a schematic structural diagram of the slip ring assembly provided by the utility model;

[0028] Figure 5 This is a structural schematic diagram of the stop plate provided by the utility model.

[0029] Reference numerals:

[0030] 1-Head rotating seat;

[0031] 2- Rotating motor;

[0032] 3- synchronous belt drive assembly, 31- driving wheel, 32- driven wheel, 321- groove, 33- synchronous belt;

[0033] 4-first bearing;

[0034] 5-Handpiece;

[0035] 6-bearing assembly, 61-annular bearing, 62-bearing mounting plate;

[0036] 7-tensioning assembly, 71-tensioning wheel, 72-tensioning wheel mounting plate, 721-adjusting hole, 722-eccentric hole, 73-tensioning wheel pin;

[0037] 8- second bearing;

[0038] 9-slip ring assembly, 91-rotating shaft, 92-sliding sleeve, 93-connecting plate;

[0039] 10-stop plate, 101-card slot;

[0040] 11- stop sleeve;

[0041] 12-pin;

[0042] 13-mounting seat;

[0043] 14-Third bearing. DETAILED DESCRIPTION

[0044] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0045] In this utility model, unless otherwise specified or limited, the terms "installed," "connected," "connect," "fixed," etc. should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; and internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on specific circumstances.

[0046] It should be noted that the directional words such as "upper" and "lower" below are defined based on the drawings in the specification.

[0047] The core of the present invention is to provide a rotary head, which solves the problem of wear of the driven wheel 32 due to unilateral force applied by the synchronous belt 33, thereby indirectly increasing the service life of the driven wheel 32. Another core of the present invention is to provide a template sewing machine including the rotary head, which can prevent the driven wheel 32 from being worn.

[0048] Please refer to Figure 1 A rotary machine head includes a machine head rotating seat 1, a rotating motor 2, a synchronous belt transmission assembly 3, a first bearing 4 and a machine head 5.

[0049] Specifically, a rotating motor 2 and a synchronous belt transmission assembly 3 connected to the rotating motor 2 are provided on the machine head rotating seat 1. The synchronous belt transmission assembly 3 is connected to the machine head 5 below the machine head rotating seat 1 through a first bearing 4. The synchronous belt transmission assembly 3 is driven to rotate by the rotating motor 2, and the machine head 5 is driven to rotate by the synchronous belt transmission assembly 3.

[0050] The synchronous belt transmission assembly 3 includes a driving wheel 31, a driven wheel 32, and a synchronous belt 33 wound around the outer circumference of the driving wheel 31 and the driven wheel 32. The driving wheel 31 is connected to the motor shaft of the rotating motor 2, and the rotating motor 2 drives the driving wheel 31 to rotate, thereby driving the synchronous belt 33 wound around the driving wheel 31 and the driven wheel 32 to rotate, so that the synchronous belt 33 drives the driven wheel 32 to rotate. The two ends of the driven wheel 32 are respectively provided with a first extension portion and a second extension portion. The first extension portion is connected to the machine head 5 through a first bearing 4. The rotation of the driven wheel 32 can drive the machine head 5 to rotate. The outer circumference of the second extension portion is provided with a bearing assembly 6. The upper end of the driven wheel 32 is provided with a bearing assembly 6, and the lower end of the driven wheel 32 is provided with a first bearing 4. The bearing assembly 6 and the first bearing 4 cooperate to fix the driven wheel 32, ensure that the rotation of the machine head 5 is stable and reliable, and can prevent the driven wheel 32 from being worn by the unilateral force of the synchronous belt 33, thereby indirectly increasing the service life of the driven wheel 32.

[0051] The rotating machine head arranged in the above manner, when the rotating motor 2 is working, drives the driving wheel 31 to rotate, and drives the driven wheel 32 to rotate together through the synchronous belt 33, thereby driving the machine head 5 to rotate. The machine head 5 is mounted on the first bearing 4, and the driven wheel 32 cooperates with the first bearing 4, and a bearing assembly 6 is arranged on the second extension portion above the driven wheel 32 to ensure that the rotation of the machine head 5 is stable and reliable. By arranging the first bearing 4 and the bearing assembly 6, the driven wheel 32 can be prevented from being worn due to unilateral force of the synchronous belt 33, thereby indirectly increasing the service life of the driven wheel 32.

[0052] In the above embodiment, the bearing assembly 6 includes an annular bearing 61 provided on the outer periphery of the second extension portion, and also includes a bearing mounting plate 62 for fixing the annular bearing 61 to the machine head rotating base 1 .

[0053] It should be noted that the annular bearing 61 is fixed to the machine head rotating seat 1 through the bearing mounting plate 62. The annular bearing 61 is arranged on the second extension portion of the driven wheel 32 and is rotatably connected to the driven wheel 32, so that both ends of the driven wheel 32 are rotatably connected to the machine head rotating seat 1, so that the driven wheel 32 is more stable when rotating and will not cause the problem of unilateral wear.

[0054] Please refer to Figure 2 , and also includes a tensioning assembly 7 for adjusting the tension of the synchronous belt 33. The tensioning assembly 7 is arranged at the bottom of the head rotating seat 1. The head rotating seat 1 is provided with an installation slot hole for installing the tensioning assembly 7. The output end of the tensioning assembly 7 is in contact with the outer ring surface of the synchronous belt 33.

[0055] It can be understood that the tensioning assembly 7 is installed on the head rotating base 1 to adjust the tension of the synchronous belt 33.

[0056] Furthermore, the tensioning assembly 7 includes a tensioning wheel 71, a tensioning wheel mounting plate 72 and a tensioning wheel pin 73. The tensioning wheel mounting plate 72 is a circular plate. Two symmetrically arranged adjustment holes 721 are provided on the tensioning wheel mounting plate 72. The tensioning wheel mounting plate 72 is fixed to the mounting slot hole by the cooperation of screws and the adjustment holes 721. The tensioning wheel 71 is fixed to the tensioning wheel pin 73 through two second bearings 8. The outer peripheral surface of the tensioning wheel 71 abuts against the synchronous belt 33. The tensioning wheel mounting plate 72 is also provided with an eccentric hole 722, and the tensioning wheel pin 73 is fixed to the eccentric hole 722.

[0057] It should be noted that the tensioning wheel pin 73 is mounted on the tensioning wheel mounting plate 72, and the tensioning wheel 71 is mounted on the tensioning wheel pin 73 after being engaged with the second bearing 8. The outer periphery of the tensioning wheel 71 abuts against the outer annular surface of the synchronous belt 33. When the tensioning wheel 71 is used to adjust the tension of the synchronous belt 33, the driven wheel 32 is first driven by the rotating motor 2 to rotate the machine head 5, so that the tensioning wheel mounting plate 72 on the machine head rotating seat 1 is staggered with the machine head 5. The adjustment tool is inserted into the eccentric hole 722, and the adjustment tool is rotated to rotate the tensioning wheel mounting plate 72, thereby driving the tensioning wheel 71 on the tensioning wheel mounting plate 72 to rotate eccentrically, thereby adjusting the distance between the tensioning wheel 71 and the synchronous belt 33, so that the tension of the synchronous belt 33 is changed.

[0058] The maximum rotation stroke of the tensioning wheel mounting plate 72 is determined by the length of the adjustment hole 721 . When the screw abuts against the end of the adjustment hole 721 , the tensioning wheel mounting plate 72 rotates to the maximum rotation stroke.

[0059] In the above embodiment, the second extension portion is provided with a mounting hole for mounting the slip ring assembly 9 , the mounting hole is provided through the driven wheel 32 and the first extension portion, and a limiting step for limiting the slip ring assembly 9 is provided in the mounting hole.

[0060] It can be understood that the slip ring assembly 9 is installed on the driven wheel 32, and is installed into the driven wheel 32 from the mounting hole of the second extension portion until the bottom of the slip ring assembly 9 abuts against the limiting step, and then the slip ring assembly 9 is fixed to the limiting step by screws to fix the position of the slip ring assembly 9 and the driven wheel 32.

[0061] There are multiple grooves 321 on the inner wall of the mounting hole. Figure 3 as shown to clear the screw caps.

[0062] Please refer to Figure 1 and Figure 4 The slip ring assembly 9 includes a rotating shaft 91 and a sliding sleeve 92 sleeved on the outer circumference of the rotating shaft 91. The sliding sleeve 92 is rotatably connected to the rotating shaft 91. The bottom of the rotating shaft 91 has a connecting plate 93, and the connecting plate 93 is connected to the limiting step.

[0063] It should be noted that when installing the slip ring assembly 9, the slip ring assembly 9 is installed as a whole into the driven wheel 32 along the mounting hole. After the connecting plate 93 of the slip ring assembly 9 abuts against the limiting step, the connecting plate 93 is fixed to the limiting step by screws so that the intermediate shaft 91 can rotate synchronously with the driven wheel 32.

[0064] Please refer to Figure 1 and Figure 5 A stop plate 10 is provided on the top of the sliding sleeve 92 , a slot 101 is provided on the stop plate 10 , a stop sleeve 11 is provided in the slot 101 , and the stop sleeve 11 is fixed to the mounting seat 13 on the top of the machine head rotating seat 1 by a pin 12 .

[0065] It can be understood that the rotating shaft 91 and the sleeve 92 are rotationally connected, the sleeve 92 is used to transmit energy, the stop plate 10 is installed on the sleeve 92, and the stop sleeve 11 is fixed to the mounting seat 13 of the machine head rotating seat 1 by the pin 12. After the stop sleeve 11 installed on the machine head rotating seat 1 cooperates with the slot 101 of the stop plate 10, the sleeve 92 does not rotate with the rotation of the driven wheel 32.

[0066] As a preferred embodiment, the motor shaft is rotatably connected to the machine head rotating base 1 through a third bearing 14 .

[0067] It should be noted that a third bearing 14 is arranged below the machine head rotating seat 1 at a position concentric with the rotating motor 2 to achieve a rotational connection between the motor shaft and the machine head rotating seat 1 .

[0068] In the above case, the first bearing 4 is a cross roller bearing, which is connected to the machine head rotating seat 1 via fasteners.

[0069] It is understandable that the first bearing 4 is configured as a cross roller bearing to improve the overall integration. The cross roller bearing has high rotation accuracy and can improve the output accuracy of the rotating motor 2.

[0070] In summary, the rotating machine head provided by the present invention has a machine head 5 installed on a cross roller bearing, the driven wheel 32 cooperates with the cross roller bearing, and an annular bearing 61 is arranged above the driven wheel 32 to ensure that the rotation of the machine head 5 is stable and reliable, the overall structure is compact, and the installation and adjustment are convenient.

[0071] In addition to the rotating machine head disclosed in the above embodiments, the present invention also provides a template sewing machine including the above rotating machine head. For the structures of other parts of the template sewing machine, please refer to the prior art and will not be described in detail herein.

[0072] 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.

[0073] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0074] The above is a detailed introduction to the rotary head and template sewing machine provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only intended to help understand the method and core concept of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the principles of the present invention, various improvements and modifications can be made to the present invention, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A rotary head, characterized in that: include: A machine head rotating seat (1), wherein a rotating motor (2) and a synchronous belt transmission assembly (3) connected to the rotating motor (2) are provided on the machine head rotating seat (1), and the synchronous belt transmission assembly (3) is connected to the machine head (5) below the machine head rotating seat (1) via a first bearing (4); The synchronous belt transmission assembly (3) comprises a driving wheel (31), a driven wheel (32), and a synchronous belt (33) wound around the outer peripheries of the driving wheel (31) and the driven wheel (32); the driving wheel (31) is connected to the motor shaft of the rotating motor (2); a first extension portion and a second extension portion are respectively provided at both ends of the driven wheel (32); the first extension portion is connected to the machine head (5) via the first bearing (4); and a bearing assembly (6) is provided on the outer periphery of the second extension portion.

2. The rotary head according to claim 1, characterized in that: The bearing assembly (6) includes an annular bearing (61) provided on the outer periphery of the second extension portion, and also includes a bearing mounting plate (62) for fixing the annular bearing (61) to the machine head rotating seat (1).

3. The rotary head according to claim 1, characterized in that: It also includes a tensioning assembly (7) for adjusting the tension of the synchronous belt (33), the tensioning assembly (7) is arranged at the bottom of the head rotating seat (1), the head rotating seat (1) is provided with a mounting slot for mounting the tensioning assembly (7), and the output end of the tensioning assembly (7) abuts against the outer annular surface of the synchronous belt (33).

4. The rotary head according to claim 3, characterized in that: The tensioning assembly (7) comprises a tensioning wheel (71), a tensioning wheel mounting plate (72) and a tensioning wheel pin (73). The tensioning wheel mounting plate (72) is a circular plate. Two symmetrically arranged adjustment holes (721) are provided on the tensioning wheel mounting plate (72). The tensioning wheel mounting plate (72) is fixed to the mounting slot hole by screws and the adjustment holes (721). The tensioning wheel (71) is fixed to the tensioning wheel pin (73) through two second bearings (8). The outer peripheral surface of the tensioning wheel (71) abuts against the synchronous belt (33). The tensioning wheel mounting plate (72) is also provided with an eccentric hole (722). The tensioning wheel pin (73) is fixed to the eccentric hole (722).

5. The rotary head according to claim 1, characterized in that: The second extension portion is provided with a mounting hole for mounting the slip ring assembly (9), the mounting hole being provided through the driven wheel (32) and the first extension portion, and a limiting step for limiting the position of the slip ring assembly (9) being provided in the mounting hole.

6. The rotary head according to claim 5, characterized in that: The slip ring assembly (9) comprises a rotating shaft (91) and a sliding sleeve (92) sleeved on the outer periphery of the rotating shaft (91), wherein the sliding sleeve (92) is rotatably connected to the rotating shaft (91), and a connecting plate (93) is provided at the bottom of the rotating shaft (91), and the connecting plate (93) is connected to the limiting step.

7. The rotary head according to claim 6, characterized in that: A stop plate (10) is provided on the top of the sliding sleeve (92), a slot (101) is provided on the stop plate (10), a stop sleeve (11) is provided in the slot (101), and the stop sleeve (11) is fixed to the mounting seat (13) on the top of the machine head rotating seat (1) through a pin (12).

8. The rotary head according to claim 1, wherein: The motor shaft is rotationally connected to the machine head rotating seat (1) via a third bearing (14).

9. The rotary head according to claim 1, characterized in that: The first bearing (4) is a cross roller bearing, and the cross roller bearing is connected to the machine head rotating seat (1) via a fastener.

10. A template sewing machine, characterized in that: The invention comprises the rotating head according to any one of claims 1 to 9.

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