阅读说明：本技术 一种用于立柱式缝纫机的送料传动装置 (Feeding transmission device for column type sewing machine ) 是由 张金法 陈建复 黄贤华 于 2020-06-03 设计创作，主要内容包括：本发明涉及一种用于立柱式缝纫机的送料传动装置,送料传动装置包括送料组件(3)、驱动机构(4)和传动机构(5)。送料组件(3)包括送料固定板(31)和靠近针板组件(21)设置的送料齿轮环(32),送料固定板(31)设有对送料齿轮环(32)限位的第一凹槽(33)；传动机构(5)包括组件固定板(51)、传动组件(52)和联接组件(53),组件固定板(51)沿立柱座体(2)长度方向滑动并组设于立柱座体(2)上,联接组件(53)分别与驱动机构(4)和传动组件(52)连接,传动组件(52)与送料齿轮环(32)连接。本发明可以减小送料组件对旋梭的影响,还可以调节送料齿轮环与针板组件的相对高度。(The invention relates to a feeding transmission device for a column type sewing machine, which comprises a feeding component (3), a driving mechanism (4) and a transmission mechanism (5). The feeding assembly (3) comprises a feeding fixing plate (31) and a feeding gear ring (32) which is arranged close to the needle plate assembly (21), and the feeding fixing plate (31) is provided with a first groove (33) for limiting the feeding gear ring (32); the transmission mechanism (5) comprises an assembly fixing plate (51), a transmission assembly (52) and a connecting assembly (53), the assembly fixing plate (51) slides along the length direction of the upright post base body (2) and is assembled on the upright post base body (2), the connecting assembly (53) is respectively connected with the driving mechanism (4) and the transmission assembly (52), and the transmission assembly (52) is connected with the feeding gear ring (32). The invention can reduce the influence of the feeding component on the rotating shuttle and can also adjust the relative height of the feeding gear ring and the needle plate component.)

1. The utility model provides a pay-off transmission for column sewing machine, column sewing machine includes support (1) and locates stand pedestal (2) on support (1), stand pedestal (2) top is equipped with faller subassembly (21), pay-off transmission includes:

the feeding assembly (3) comprises a feeding fixing plate (31) abutted to the upright post base body (2) and a feeding gear ring (32) arranged close to the needle plate assembly (21), a first groove (33) matched with the feeding gear ring (32) in part of shape and size is formed in one side of the feeding fixing plate (31), and the first groove (33) is matched with the upright post base body (2) to complete axial and radial limiting on the feeding gear ring (32);

a drive mechanism (4); and

drive mechanism (5), drive mechanism (5) are fixed in including being fixed with subassembly fixed plate (51), the rotation of pay-off fixed plate (31) are fixed in drive assembly (52) and the rotation of subassembly fixed plate (51) are fixed in coupling subassembly (53) of stand pedestal (2), subassembly fixed plate (51) are followed stand pedestal (2) length direction slides and the group is located on stand pedestal (2), coupling subassembly (53) both ends respectively with actuating mechanism (4) and drive assembly (52) are connected, drive assembly (52) with the other end that coupling subassembly (53) are connected with pay-off gear ring (32) are connected.

2. The feed transmission of claim 1, wherein the transmission assembly (52) comprises a transmission shaft (521) and a transmission gear (522), the transmission shaft (521) is connected with the coupling assembly (53) at one end, a conversion gear (5211) engaged with the transmission gear (522) is arranged at the other end, and the transmission gear (522) is engaged with the feed gear ring (32).

3. The feeding transmission device as claimed in claim 2, wherein the transmission gear (522) is rotatably fixed on the component fixing plate (51) through a fixing seat (523), a circular area for accommodating the fixing seat (523) is arranged in the middle of the transmission gear (522), a plurality of spheres (524) are arranged between the transmission gear (522) and the fixing seat (523), a second groove is formed in the side wall of the middle of the transmission gear (522) along the circumferential direction, a third groove matched with the second groove in position is formed in the outer side of the fixing seat (523) along the circumferential direction, and the second groove and the third groove are combined to form a space for accommodating the spheres (524).

4. The feed transmission of claim 3, wherein the drive gear (522) includes a first drive gear (5221) meshed with the shift gear (5211) and a second drive gear (5222) fixed to the first drive gear (5221), the first drive gear (5221) and second drive gear (5222) are coaxially disposed, and the second drive gear (5222) is meshed with the feed gear ring (32).

5. The feed transmission device as claimed in claim 4, wherein the fixing seat (523) includes a first fixing seat (5231) fixed to the component fixing plate (51) and a second fixing seat (5232) detachably fixed to the first fixing seat (5231), edges of the first and second fixing seats (5231, 5232) are each provided with a chamfer, and the chamfer forms the third groove when the first and second fixing seats (5231, 5232) are fixed.

6. The feed transmission device as claimed in claim 2, wherein a driving shaft sleeve (511), and a driving retainer (512) and a coupling retainer (513) which are located on two sides of the driving shaft sleeve (511) are arranged on the assembly fixing plate (51), and the driving shaft (521) sequentially passes through the driving retainer (512) and the driving shaft sleeve (511) and is fixed with the driving retainer (512) and the coupling retainer (513).

7. The feed transmission device as claimed in claim 6, wherein the coupling assembly (53) comprises a coupling sleeve (531), a coupling block (533) and a connecting shaft (532) disposed through the coupling sleeve (531), the coupling sleeve (531) is fixed to the carrier (1), one end of the connecting shaft (532) is provided with a fourth groove (534), the coupling retainer (513) is provided with a fifth groove (535), the fourth groove (534) and the fifth groove (535) are disposed opposite and intersecting, and the coupling block (533) comprises a first projection (536) and a second projection (537) respectively disposed in the fourth groove (534) and the fifth groove (535).

8. The feed drive as claimed in claim 7, wherein a third transmission gear (5321) is fastened to the connecting shaft (532), and the drive mechanism (4) is provided with a fourth transmission gear (5322) which meshes with the third transmission gear (5321).

9. The feed transmission device as claimed in claim 1, wherein the column housing (2) is rotatably fixed with an eccentric adjusting pin (6), the assembly fixing plate (51) is provided with an adjusting groove (61) which matches the position of the eccentric adjusting pin (6) and accommodates part of the eccentric adjusting pin (6), and the eccentric adjusting pin (6) rotates to adjust the assembly fixing plate (51) to slide along the length direction of the column housing (2).

10. The feed drive as claimed in claim 1, wherein the drive mechanism (4) is a stepper motor.

Technical Field

The present invention relates generally to the field of column sewing machines. More particularly, the present invention relates to a feed drive for a column sewing machine.

Background

A sewing machine is a machine that uses one or more sewing threads to form one or more stitches in a material to be sewn, thereby interweaving or stitching one or more layers of material. The sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like and products such as leather, plastic, paper and the like, and the sewed stitches are neat, beautiful, flat and firm, and have the characteristics of high sewing speed and simple and convenient use.

The feeding action of the traditional column type sewing machine is realized by adopting a mechanical connecting rod and gear mechanism transmission mode, the mode is more complex in structure, and faults are easy to occur in the using process. Wherein, the pay-off gear of traditional column sewing machine is fixed through the axis of rotation alone, because the position of pay-off gear and rotating shuttle is nearer, therefore the structure of current pay-off gear produces the influence to rotating shuttle easily. Meanwhile, when the position of the existing feeding gear and needle plate assembly is adjusted (for example, the relative height of the feeding gear and the needle plate assembly is adjusted), the adjustment operation is often completed after the casing of the feeding mechanism is disassembled, and the adjustment mode can cause the adjustment process to be too complex, so that the sewing speed of the column sewing machine is easily influenced.

Disclosure of Invention

In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a feeding transmission device for a column-type sewing machine, which can reduce the influence of a feeding assembly on a rotating shuttle and can adjust the relative heights of a feeding gear ring and a needle plate assembly.

In order to achieve the purpose, the invention provides the following technical solutions:

in one aspect, the present invention provides a feeding transmission device for a column sewing machine, the column sewing machine including a support and a column base provided on the support, a needle plate assembly being provided on a top of the column base, the feeding transmission device including:

the feeding assembly comprises a feeding fixing plate abutted against the stand column seat body and a feeding gear ring arranged close to the needle plate assembly, a first groove matched with the feeding gear ring in part in shape and size is formed in one side of the feeding fixing plate, and the first groove is matched with the stand column seat body to complete axial and radial limiting on the feeding gear ring;

a drive mechanism; and

the transmission mechanism comprises a component fixing plate fixed with the feeding fixing plate, a transmission component rotationally fixed on the component fixing plate and a connecting component rotationally fixed on the stand column base body, the component fixing plate slides along the length direction of the stand column base body and is assembled on the stand column base body, two ends of the connecting component are respectively connected with the driving mechanism and the transmission component, and the other end of the transmission component connected with the connecting component is connected with the feeding gear ring.

In one embodiment, the transmission assembly comprises a transmission shaft and a transmission gear, one end of the transmission shaft is connected with the coupling assembly, the other end of the transmission shaft is provided with a conversion gear meshed with the transmission gear, and the transmission gear is meshed with the feeding gear ring.

In one embodiment, the transmission gear is rotatably fixed on the component fixing plate through a fixing seat, a circular area for accommodating the fixing seat is arranged in the middle of the transmission gear, a plurality of balls are arranged between the transmission gear and the fixing seat, a second groove is arranged on the side wall of the middle of the transmission gear along the circumferential direction, a third groove matched with the second groove in position is arranged on the outer side of the fixing seat along the circumferential direction, and the second groove and the third groove are combined to form a space for accommodating the balls.

In one embodiment, the transmission gears include a first transmission gear engaged with the switching gear and a second transmission gear fixed to the first transmission gear, the first transmission gear and the second transmission gear are coaxially disposed, and the second transmission gear is engaged with the feeding gear ring.

In one embodiment, the fixing seats comprise a first fixing seat rotationally fixed on the component fixing plate and a second fixing seat detachably fixed with the first fixing seat, the edges of the first fixing seat and the second fixing seat are both provided with chamfers, and the chamfers form the third grooves when the first fixing seat and the second fixing seat are used.

In one embodiment, the assembly fixing plate is provided with a transmission shaft sleeve, and a transmission retaining ring and a connection retaining ring which are positioned on two sides of the transmission shaft sleeve, and the transmission shaft sequentially penetrates through the transmission retaining ring and the transmission shaft sleeve and is fixed with the transmission retaining ring and the connection retaining ring.

In one embodiment, the coupling assembly comprises a coupling shaft sleeve, a connecting shaft penetrating through the coupling shaft sleeve and a coupling block, the coupling shaft sleeve is fixed on the support, a fourth groove is formed in one end of the connecting shaft, a fifth groove is formed in the coupling retainer ring, the fourth groove and the fifth groove are opposite and are arranged in a crossed mode, and the coupling block comprises a first bump and a second bump which are located in the fourth groove and the fifth groove respectively.

In one embodiment, a third transmission gear is fixed on the connecting shaft, and a fourth transmission gear meshed with the third transmission gear is arranged on the driving mechanism.

In one embodiment, the upright base is rotatably fixed with an eccentric adjusting pin, the assembly fixing plate is provided with an adjusting groove which is matched with the eccentric adjusting pin in position and accommodates part of the eccentric adjusting pin, and the eccentric adjusting pin rotates to adjust the assembly fixing plate to slide along the length direction of the upright base.

In one embodiment, the drive mechanism is a stepper motor.

Compared with the prior art, the feeding mechanism has the advantages that the feeding fixing plate, the feeding gear ring and the stand column seat body are arranged, so that parts and structures of a conventional feeding gear which is rotationally fixed through the rotating shaft can be reduced, and the influence of structures such as the rotating shaft on the disassembly or rotation of the rotating shuttle can be avoided. The component fixing plate arranged on the stand column seat body through the sliding group can adjust the relative height of the feeding gear ring and the needle plate component, so that the feeding transmission device can meet different feeding condition requirements.

Drawings

The above and other objects, features and advantages of exemplary embodiments of the present disclosure will become readily apparent from the following detailed description read in conjunction with the accompanying drawings. Several embodiments of the present disclosure are illustrated by way of example, and not by way of limitation, in the figures of the accompanying drawings and in which like reference numerals refer to similar or corresponding parts and in which:

FIG. 1 is a schematic diagram showing the construction of a feed drive according to the present invention;

FIG. 2 is a schematic cross-sectional view showing a feed drive according to the present invention;

FIG. 3 is an enlarged, fragmentary, schematic view showing a feed assembly of the feed drive according to the present invention;

FIG. 4 is an enlarged, fragmentary, schematic view showing the drive mechanism of the feed drive according to the present invention;

FIG. 5 is an enlarged schematic view showing a coupling assembly of the feed drive according to the present invention; and

fig. 6 is a partial schematic view showing the feed actuator according to the present invention.

Detailed Description

The technical solutions in the embodiments of the present disclosure will be clearly and completely described below with reference to the drawings in the embodiments of the present disclosure. It is to be understood that the described embodiments are only a few embodiments of the present disclosure, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

Specific embodiments of the present disclosure are described in detail below with reference to the accompanying drawings.

Fig. 1 is a schematic view showing the structure of a feed transmission according to the present invention. As shown in fig. 1, the present invention provides a feeding transmission device, which is used for feeding of a column sewing machine, the column sewing machine comprises a support 1 and a column base body 2 arranged on the support 1, and a needle plate assembly 21 is arranged at the top of the column base body 2. In one embodiment, the feed drive may include a feed assembly 3, a drive mechanism 4, and a drive mechanism 5. Preferably, the driving mechanism 4 is a stepping motor, and can perform forward rotation and reverse rotation to perform forward and reverse feeding of the joint material 7. The feeding assembly 3 includes a feeding fixing plate 31 abutting against the column base body 2 and a feeding gear ring 32 disposed close to the needle plate assembly 21, a first groove 33 (as shown in fig. 6) matching with the feeding gear ring 32 in shape and size is disposed on one side of the feeding fixing plate 31, and the first groove 33 and the column base body 2 cooperate to complete axial and radial limiting of the feeding gear ring 32. In addition, the transmission mechanism 5 includes an assembly fixing plate 51 fixed with the feeding fixing plate 31, a transmission assembly 52 rotationally fixed to the assembly fixing plate 51, and a connection assembly 53 rotationally fixed to the column base body 2, the assembly fixing plate 51 slides along the length direction of the column base body 2 and is assembled on the column base body 2, two ends of the connection assembly 53 are respectively connected with the driving mechanism 4 and the transmission assembly 52, and the other end of the transmission assembly 52 connected with the connection assembly 53 is connected with the feeding gear ring 32.

In actual operation, when the sewing material 7 needs to be fed, the driving mechanism 4 drives the connecting component 53 to rotate, the connecting component 53 correspondingly drives the transmission component 52 connected with the connecting component 53 to rotate, and finally the transmission component 53 drives the feeding gear ring 32 to rotate. Due to the characteristic that the feeding gear ring 32 is provided with gear teeth, the friction force between the feeding gear ring 32 and the sewing material 7 can be increased, so that when the feeding gear ring 32 rotates, the feeding gear ring 32 drives the sewing material 7 to complete feeding operation of the sewing material 7. Because the feeding fixing plate 31, the feeding gear ring 32 and the upright post base body 2 are structurally arranged, components and structures of the conventional feeding gear which is rotationally fixed on the upright post base body 2 through the rotating shaft can be reduced, and the influence of redundant rotating shaft structures and the like on operations such as the disassembly or rotation of the rotating shuttle can be avoided. In addition, because the feeding gear ring 32 is fixed on the assembly fixing plate 51, and the assembly fixing plate 51 is slidably assembled on the column base body 2, the relative height between the feeding gear ring 32 and the needle plate assembly 21 can be adjusted by sliding the assembly fixing plate 51, so that the feeding transmission device can meet different feeding requirements.

FIG. 2 is a schematic cross-sectional view showing a feed drive according to the present invention; FIG. 3 is an enlarged schematic view of a portion of the feed assembly showing the feed drive according to the present invention. As shown in fig. 2 and 3, in one embodiment, the driving assembly 52 may include a driving shaft 521 and a driving gear 522, the driving shaft 521 is connected to the coupling assembly 53 at one end, the other end is provided with a transfer gear 5211 engaged with the driving gear 522, and the driving gear 522 is engaged with the feeding gear ring 32. As further shown in fig. 3, the transmission gear 522 may be rotatably fixed to the component fixing plate 51 through the fixing seat 523, a circular region for accommodating the fixing seat 523 is disposed in the middle of the transmission gear 522, a plurality of balls 524 are disposed between the transmission gear 522 and the fixing seat 523, a second groove is disposed along a circumferential direction on a side wall in the middle of the transmission gear 522, a third groove matched with the second groove is disposed along a circumferential direction on an outer side of the fixing seat 523, and the second groove and the third groove are combined to form a space for accommodating the balls 524. When the balls 524 are located in the space formed by the second and third grooves, the balls 524 simultaneously abut against the insides of the second and third grooves. Because the spacing mating reaction of spheroid 524 with second recess and third recess, a plurality of spheroids 524 only can move in the space that second recess and third recess formed, simultaneously again because the effect of a plurality of spheroids 524 can make radial and axial displacement can't appear in drive gear 522 and fixing base 523, and this drive gear 522 only can rotate around fixing base 523 promptly. In an application scenario, the space formed by the combination of the second groove and the third groove can accommodate a plurality of balls 524 to realize the relative rotation of the transmission gear 522 and the fixing seat 523, and a plurality of cylinders can be arranged in the space formed by the combination of the second groove and the third groove to achieve the purpose of the relative rotation of the transmission gear 522 and the fixing seat 523. Specifically, when the cylinder is located in the space formed by the second groove and the third groove, the axis of the cylinder is perpendicular to the annular surface of the annular second groove or the annular surface of the third groove (since the transmission gear 522 and the fixing seat 523 need to rotate relatively, both the corresponding second groove and the corresponding third groove are annular), and the axial length of the cylinder is equal to the groove width of the second groove and the third groove. Preferably, the diameter of the cylinder is greater than or equal to the sum of the groove depths of the second and third grooves. When the transmission gear 522 and the fixed seat 523 rotate relatively, the plurality of cylinders roll in a space formed by the second groove and the third groove.

As shown in fig. 2, in one embodiment, the assembly fixing plate 51 may be provided with a driving sleeve 511, and a driving collar 512 and a coupling collar 513 disposed at two sides of the driving sleeve 511, and the driving shaft 521 may sequentially pass through the driving collar 512 and the driving sleeve 511 and be fixed with the driving collar 512 and the coupling collar 513. Because the driving retainer 512 and the coupling retainer 513 are respectively fixed to the driving sleeve 511, and the driving sleeve 511 fixed to the assembly fixing plate 51 is disposed between the driving retainer 512 and the coupling retainer 513, the driving shaft 521 can rotate in the driving sleeve 511 without axial movement.

As shown in fig. 3, in one or more embodiments, the drive gears 522 can include a first drive gear 5221 meshed with the transfer gear 5211 and a second drive gear 5222 fixed to the first drive gear 5221, the first drive gear 5221 and the second drive gear 5222 being coaxially disposed, and the second drive gear 5222 being meshed with the feed gear ring 32. The force transmitted from the transmission shaft 521 can be transmitted to the feeding gear ring 32 through the first transmission gear 5221 and the second transmission gear 5222 which are coaxially arranged, so that the force of the driving mechanism 4 can be transmitted to the feeding gear ring 32, and the feeding gear ring 32 can rotate to complete the forward or reverse feeding of the sewing material 7. Wherein, a plurality of teeth of the first transmission gear 5221 are positioned on one side thereof, and the plurality of teeth are arranged in a ring shape and engaged with the teeth of the conversion gear 5211. The first transmission gear 5221 is embedded in the second transmission gear 5222, the second transmission gear 5222 is fixed to the other side surface of the first transmission gear 5221, and the outer side edge of the second transmission gear 5222 is provided with a plurality of gear teeth arranged in a ring shape and meshed with the feeding gear ring 32. By the structure that the first transmission gear 5221 is embedded in the second transmission gear 5222, the space occupied by the whole formed by the first transmission gear 5221 and the second transmission gear 5222 can be reduced on the basis of transmission of the conversion gear 5211 and the feeding gear ring 32, so that the whole volume of the feeding transmission device can be correspondingly reduced.

In one or more embodiments, the fixing seat 523 may include a first fixing seat 5231 fixed to the component fixing plate 51 and a second fixing seat 5232 detachably fixed to the first fixing seat 5231, edges of the first and second fixing seats 5231 and 5232 are each provided with a chamfer, and the chamfer forms a third groove when the first and second fixing seats 5231 and 5232 are fixed. Due to the arrangement of the first fixing seat 5231 and the second fixing seat 5232, a plurality of balls 524 can be placed between the fixing seat 523 and the transmission gear 522. Further, a limiting groove is formed in the first fixing seat 5231, a limiting bump matched with the limiting groove is formed in the second fixing seat 5232, and when the first fixing seat 5231 and the second fixing seat 5232 are fixed, the chamfer positions of the first fixing seat 5231 and the second fixing seat 5232 are opposite to each other and form a third groove, and the limiting bump is located in the limiting groove. Due to the arrangement of the limiting projection and the limiting groove, when the first fixing seat 5231 and the second fixing seat 5232 are fixed, the whole fixed by the first fixing seat 5231 and the second fixing seat 5232 can meet the predetermined requirement. In an application scenario, the fixing base 523, the transmission gear 522 and the module fixing plate 51 may be assembled in the following manner: first, the first fixing seat 5231 is fixed to the module fixing plate 51; next, the transmission gear 522 is sleeved on the first fixing seat 5231; then, the balls 524 are placed at the chamfers of the second groove and the first fixing seat 5231; finally, the second fixing seat 5232 is fixed to the first fixing seat 5231, and the fixing seat 523, the transmission gear 522, and the module fixing plate 51 are assembled. In another application scenario, the manner of assembling the fixing base 523, the transmission gear 522 and the module fixing plate 51 may also be as follows: first, the transmission gear 522 is sleeved on the first fixing seat 5231; next, the balls 524 are placed at the chamfers of the second groove and the first fixing seat 5231; then, the second fixing seat 5232 is fixed to the first fixing seat 5231; finally, the fixing base 523 to which the transmission gear 522 is assembled is fixed to the module fixing plate 51, and the fixing base 523, the transmission gear 522, and the module fixing plate 51 are assembled.

FIG. 4 is an enlarged, fragmentary, schematic view showing the drive mechanism of the feed drive according to the present invention; FIG. 5 is an enlarged schematic view showing the coupling assembly of the feed drive according to the present invention. As shown in fig. 4 and 5, the coupling assembly 53 includes a coupling bushing 531, a connecting shaft 532 disposed through the coupling bushing 531, and a coupling block 533, the coupling bushing 531 is fixed to the support 1, the connecting shaft 532 has a fourth groove 534 at one end, the coupling retainer 513 has a fifth groove 535, the fourth groove 534 and the fifth groove 535 are disposed opposite to and across from each other, and the coupling block 533 includes a first projection 536 and a second projection 537 respectively disposed in the fourth groove 534 and the fifth groove 535. Due to the arrangement of the connecting block 533, when the assembly fixing plate 51 moves along the length direction of the column base 2 and drives the transmission shaft 521 to move, through the cooperation between the first projection 536 and the fourth groove 534 and the cooperation between the second projection 537 and the fifth groove 535, after the assembly fixing plate 51 moves a certain distance, the rotation of the connecting shaft 532 can still be transmitted to the connecting retaining ring 513 through the connecting block 533, and finally transmitted to the feeding gear ring 32, so that the feeding gear ring 32 rotates. Further, since the fourth groove 534 and the fifth groove 535 are disposed opposite and across to each other, and the first projection 536 and the second projection 537 corresponding to the fourth groove 534 and the fifth groove 535 are also disposed across to each other, during the rotation of the connecting shaft 532, the coupling block 533 has a limiting function on the first projection 536 along the radial direction of the connecting shaft 532 due to the structural characteristics of the first projection 536 and the second projection 537, and the fourth groove 534 has a limiting function on the second projection 537 along the radial direction of the coupling retaining ring 513, so that the first projection 536 and the second projection 537 do not disengage from the fourth groove 534 and the fifth groove 535 along the radial directions of the connecting shaft 532 and the coupling retaining ring 513.

As shown in fig. 5, in one embodiment, a third transmission gear 5321 is fixed to one end of the connecting shaft 532 remote from the connecting block 533, and the driving mechanism 4 is provided with a fourth transmission gear 5322 meshed with the third transmission gear 5321. The driving mechanism 4 drives the fourth transmission gear 5322 to rotate so as to drive the third transmission gear 5321 engaged with the fourth transmission gear 5322 to rotate, and finally enables the connecting shaft 532 fixed with the third transmission gear 5321 to rotate, thereby completing the driving of the feeding gear ring 32. Preferably, the third transmission gear 5321, the fourth transmission gear 5322, and the above-mentioned conversion gear 5211 are all bevel gears. Further, a limiting portion is disposed at an end of the connecting shaft 532 close to the connecting block 533, and a fourth groove 534 is disposed on the limiting portion. Wherein, the outer diameter of the limiting part is larger than the inner diameter of the coupling shaft sleeve 531, and the outer diameter of the third transmission gear 5321 is larger than the inner diameter of the coupling shaft sleeve 531. Meanwhile, the limiting portion and the third transmission gear 5321 are respectively located at two ends of the coupling shaft sleeve 531, so that the connecting shaft 532 can be limited, and the connecting shaft 532 can only rotate in the coupling shaft sleeve 531 and cannot move axially.

Fig. 6 is a partial schematic view showing the feed actuator according to the present invention. As shown in fig. 6, an eccentric adjusting pin 6 is rotatably fixed on the column housing 2 (not shown), and the module fixing plate 51 may be provided with an adjusting groove 61 which is matched with the eccentric adjusting pin 6 in position and accommodates part of the eccentric adjusting pin 6, and the eccentric adjusting pin 6 is rotated to adjust the module fixing plate 51 to slide along the length direction of the column housing 2. Wherein the eccentric adjusting pin 6 comprises an eccentric shaft positioned in the adjusting groove 61, the eccentric shaft is not coincident with the axis of the partial eccentric adjusting pin 6 rotationally fixed on the upright post base body 2, therefore, when the eccentric adjusting pin 6 is rotated, the rotating shaft of the eccentric shaft positioned in the adjusting groove 61 is not coincident with the axis of the eccentric shaft, so that the eccentric shaft has different heights when rotating, thereby completing the movement of the assembly fixing plate 51 by matching with the adjusting groove 61, and completing the relative height adjustment of the feeding gear ring 32 and the needle plate assembly 21 according to the position of the corresponding adjusting assembly fixing plate 51 on the upright post base body 2. In one embodiment, the column housing 2 is provided with an adjustment hole for receiving the eccentric adjustment pin 6, the adjustment hole is internally provided with an internal thread, the eccentric adjustment pin 6 is partially located in the adjustment hole, and the portion of the eccentric adjustment pin 6 located in the adjustment hole is provided with an external thread matching the internal thread of the adjustment hole. The rotational adjustment of the eccentric adjustment pin 6 can be accomplished by the cooperative rotation of the internal thread and the external thread. Further, a plurality of strip-shaped through holes are formed in the component fixing plate 51, a plurality of bolts matched with the strip-shaped through holes are formed in the stand body 2, and each bolt penetrates through one strip-shaped through hole to be detachably fixed with the stand body 2. When the assembly fixing plate 51 is adjusted by the eccentric adjustment pin 6 to move the assembly fixing plate 51, the assembly fixing plate 51 can slide relative to the column base 2 by loosening the bolt. Then, after the assembly fixing plate 51 is adjusted by the eccentric adjustment pin 6 such that the assembly fixing plate 51 slides a certain distance, the fixing of the assembly fixing plate 51 is completed by tightening the bolts. Wherein the sliding distance of the component fixing plate 51 is equal to the length of the strip-shaped through hole.

It should be understood that the terms "first," "second," "third," and "fourth," etc. in the claims, description, and drawings of the present disclosure are used to distinguish between different objects and are not used to describe a particular order. The terms "comprises" and "comprising," when used in the specification and claims of this disclosure, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, integers, steps, operations, elements, components, and/or groups thereof.

It is also to be understood that the terminology used in the description of the disclosure herein is for the purpose of describing particular embodiments only, and is not intended to be limiting of the disclosure. As used in the specification and claims of this disclosure, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should be further understood that the term "and/or" as used in the specification and claims of this disclosure refers to any and all possible combinations of one or more of the associated listed items and includes such combinations.

As used in this specification and claims, the term "if" may be interpreted contextually as "when", "upon" or "in response to a determination" or "in response to a detection". Similarly, the phrase "if it is determined" or "if a [ described condition or event ] is detected" may be interpreted contextually to mean "upon determining" or "in response to determining" or "upon detecting [ described condition or event ]" or "in response to detecting [ described condition or event ]".

Although the embodiments of the present invention are described above, the descriptions are only examples for facilitating understanding of the present invention, and are not intended to limit the scope and application scenarios of the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.