CN216972838U

CN216972838U - Feeding device of sewing machine

Info

Publication number: CN216972838U
Application number: CN202220159579.6U
Authority: CN
Inventors: 陈初喜
Original assignee: Supreme Intelligent Technology Co Ltd
Current assignee: Supreme Intelligent Technology Co Ltd
Priority date: 2022-01-21
Filing date: 2022-01-21
Publication date: 2022-07-15
Anticipated expiration: 2032-01-21

Abstract

The utility model discloses a feeding device of a sewing machine, which comprises an XY feeding transmission mechanism, a template locking structure and a lifting and pressing frame structure, wherein the template locking structure comprises a second cylinder, a piston rod of the second cylinder is connected with a step block, and the step block is provided with a guide inclined plane; the lower end of the guide pin is provided with a guide arc surface matched with the guide inclined surface of the step block; the first hole on the guide pin is rotationally connected with the sixth hole of the second connecting block through the first shaft pin; the second hole on the guide pin is rotatably connected with the third hole of the first connecting block through a second shaft pin; a fourth hole of the first connecting block is rotationally connected with a second supporting arm of the mounting seat through a third shaft pin; a seventh hole of the second connecting block is rotationally connected with a first supporting arm of the mounting seat through a fourth shaft pin; the fifth hole of the first connecting block is rotationally connected with the tenth hole of the pressing claw through a fifth shaft pin; and the eighth hole of the second connecting block is rotationally connected with the ninth hole of the pressing claw through a sixth shaft pin.

Description

Feeding device of sewing machine

Technical Field

The utility model relates to the field of industrial sewing machines, in particular to a feeding device of a sewing machine.

Background

The utility model patent number is 201621311031.X discloses an automatic frame device that presses of style machine, including frame, briquetting and the driving piece that can drive the briquetting and remove to the template in the frame, set firmly connecting plate 4 on the frame 1, briquetting 31 is the strip of buckling, and the one end of briquetting 31 articulates on connecting plate 4, and the other end of briquetting 31 is towards the middle part of frame 1, and the middle part of briquetting 31 is connected with driving piece 32. The pressing block 31 swings under the driving of the driving piece 32 and presses the template 7 through the end part, and the lower pressure borne by the template 7 is borne by the vertical plate, so that the pressing block 31 and the supporting plate 2 clamp the template 7, and the stability can be effectively kept; after sewing, the pressing block 31 is opened, the template 7 can be taken out, four pressing claw structures are arranged in the template, and two pressing claw structures are arranged at two ends of the frame 1 at intervals respectively. The automatic frame pressing device of the pattern sewing machine disclosed in the patent has certain defects, such as incapability of continuously pressing the template and automatically lifting the pressing frame when the air cylinder is suddenly cut off.

Disclosure of Invention

Aiming at the problems in the prior art, the utility model provides the feeding device of the sewing machine, which realizes template locking by matching the step block and the guide pin, and does not influence the stability of the template in the sewing process even if the air pressure is unstable or the air is cut off.

The technical scheme adopted by the utility model for solving the technical problems is as follows: a feeding device of a sewing machine comprises an XY feeding transmission mechanism, a template locking structure and a pressure lifting frame structure, wherein the template locking structure comprises a second air cylinder, a piston rod of the second air cylinder is connected with a step block, and the step block is provided with a guide inclined plane; the lower end of the guide pin is provided with a guide arc surface matched with the guide inclined surface of the step block; the first hole on the guide pin is rotationally connected with the sixth hole of the second connecting block through the first shaft pin; the second hole on the guide pin is rotatably connected with the third hole of the first connecting block through a second shaft pin; the fourth hole of the first connecting block is rotatably connected with the second supporting arm of the mounting seat through a third shaft pin; a seventh hole of the second connecting block is rotationally connected with the first supporting arm of the mounting seat through a fourth shaft pin; the fifth hole of the first connecting block is rotationally connected with the tenth hole of the pressing claw through a fifth shaft pin; and the eighth hole of the second connecting block is rotationally connected with the ninth hole of the pressing claw through a sixth shaft pin.

In order to optimize the technical scheme, the utility model also comprises the following improved technical scheme.

The mounting base is provided with a bolt, and the bolt is sleeved with a spring for driving the pressing claw to lift up and reset.

The bottom of the mounting seat is provided with a positioning convex body connected with the template, and the positioning convex body is provided with a limiting plate for limiting the descending height of the first connecting block.

The XY feeding transmission mechanism comprises an X-axis motion structure and a Y-axis motion structure.

The X-axis motion structure comprises an X motor arranged in the sewing machine body; the X motor is connected with a first gear through a driving gear, and the first gear is sleeved on the spline shaft in a sliding manner and is fixedly connected with a spline sleeve on the spline shaft; the front end of the spline shaft is connected with a second gear, and the second gear is meshed with a rack on the second connecting plate.

The Y-axis motion structure comprises a transmission shaft driven by a Y motor, and the transmission shaft drives the support to move in the Y-axis direction through a driving wheel and a synchronous belt.

Compared with the prior art, the template is locked by the aid of the pressing claw, the pressing claw is driven by the second air cylinder to extend into the lower end of the guide pin to keep a locking state, and therefore even if air pressure of the air cylinder is unstable or air is cut off, the template can be kept in the locking state, and defective products caused by influence on sewing quality are avoided.

Drawings

Fig. 1 is a schematic perspective view of an embodiment of the present invention.

Fig. 2 is a perspective view of the XY feed transmission mechanism.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a schematic perspective view of the formwork locking structure and the pressure raising frame structure.

Fig. 5 is an exploded view of fig. 4.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 1 to 5 are schematic structural views of the present invention.

Wherein the reference numerals are: a first cylinder 1, a third connecting plate 2, a fourth connecting plate 3, a fourth slider 4, a vertical slide rail 5, a frame 6, a second cylinder 7, a step block 8, a guide slope 8a, a guide pin 9, a guide arc surface 9a, a first hole 9b, a second hole 9c, a mounting seat 10, a first support arm 10a, a second support arm 10b, a first connecting block 11, a third hole 11a, a fourth hole 11b, a fifth hole 11c, a second connecting block 12, a sixth hole 12a, a seventh hole 12b, an eighth hole 12c, a pressing claw 13, a ninth hole 13a, a tenth hole 13b, a bolt 14, a spring 15, a positioning convex body 16, a limiting plate 17, a second connecting plate 18, a first stopper 19, a second stopper 20, a first slider 21, a third connecting block 22, a third slider 23, an X-axis slide rail 24, a mounting plate 25, a rack 26, a bracket 27, a fixing block 28, a synchronous belt 29, a driven wheel 30, a driving wheel 31, The driving shaft 32, the first connecting plate 33, the Y-axis slide rail 34, the spline shaft 35, the optical axis 35a, the first gear 36, the second gear 37, the bearing 38, the bearing mounting seat 39, the sewing machine main body 40, the machine base 41, the driven wheel mounting seat 42 and the spline housing 43.

The feeding device of the sewing machine comprises an XY feeding transmission mechanism, a template locking structure and a pressure lifting frame structure. The XY feeding transmission mechanism comprises an X-axis motion structure and a Y-axis motion structure. The Y-axis motion structure, the template locking structure and the pressure lifting frame structure are provided with two sets and are symmetrically installed.

As shown in fig. 2 and 3, the X-axis moving structure includes an X-motor installed in the sewing machine main body 40. The X motor drives the first gear 36 to rotate through the driving gear, and the first gear 36 is sleeved on the spline shaft 35 and is fixedly connected with the spline housing 43 on the spline shaft 35. The first gear 36 rotates the spline shaft 35 via the spline housing 43, while the spline shaft 35 can slide axially in the spline housing 43.

The front end of the spline shaft 35 has a section of optical axis 35a, and the bearing 38 is mounted in a circular hole in the middle of the bearing mount 39. The optical axis 35a passes through the inner ring of the bearing 38 and is fixedly connected with the second gear 37, and the second gear 37 is located in a groove formed in the middle of the mounting plate 25. The side wall of the mounting plate 25 is provided with an X-axis slide rail 24, and the inner wall of the second connecting plate 18 is fixedly connected with the two third sliding blocks 23. And second stoppers 20 are mounted on two sides of the X-axis slide rail 24 to limit the sliding distance of the X-axis slide rail 24.

The second connecting plate 18 is in an inverted L shape, the inner wall of the upper flat plate of the second connecting plate 18 is connected with a rack 26, and the rack 26 is meshed with a second gear 37. The second gear 37 is driven to rotate through the rotation of the spline shaft 35, and the second gear 37 is meshed with the rack 26, so that the second connecting plate 18 is driven to move in the X direction, and the front end of the second connecting plate 18 is connected with the template locking structure, so that the template locking structure is driven to move in the X direction.

The Y-axis movement structure comprises a Y motor arranged on a machine base 41, the Y motor drives a transmission shaft 32 to rotate, two driving wheels 31 are sleeved on the transmission shaft 32, the driving wheels 31 are connected with driven wheels 30 through synchronous belts 29, the driven wheels 30 are arranged on driven wheel mounting seats 42, a third connecting block 22 is connected with the synchronous belts 29 through fixing blocks 28, a first connecting plate 33 is arranged at the upper end of the third connecting block 22, and two sides of the first connecting plate 33 are fixedly connected with the machine base 41. The upper end of the first connecting plate 33 is connected to a Y-axis slide rail 34, and first stoppers 19 are mounted at both ends of the Y-axis slide rail 34 for limiting the sliding distance of the first slider 21. The bottom end of the support 27 is fixedly connected with the two first sliding blocks 21, two side surfaces of the third connecting block 22 are connected with the bottom end of the support 27, and the front end of the support 27 is connected with the mounting plate 25. The transmission shaft 32 rotates to drive the driving wheel 31 to rotate, the synchronous belt 29 is driven to rotate, the lower end of the support 27 is fixedly connected with the synchronous belt 29 through the third connecting block 22 and the fixing block 28, the support 27 is driven to push the mounting plate 25 to move in the Y-axis direction, and therefore the template locking structure is driven to move in the Y-axis direction.

As shown in fig. 4 and 5, the formwork locking structure and the lifting and pressing frame structure are symmetrically arranged on the left side and the right side of the second connecting plate 18 respectively.

The template locking structure comprises a second air cylinder 7, a piston rod of the second air cylinder 7 is connected with a step block 8, the step block 8 is provided with a guide inclined surface 8a, a guide pin 9 abuts against the step block 8, and the lower end of the guide pin 9 is provided with a guide arc surface 9a matched with the guide inclined surface 8a of the step block 8. The first hole 9b of the guide pin 9 is rotationally connected with the sixth hole 12a of the second connecting block 12 through a first shaft pin; the second hole 9c of the guide pin 9 is pivotally connected to the third hole 11a of the first link block 11 by a second pivot pin. The fourth hole 11b of the first connecting block 11 is rotatably connected with the second supporting arm 10b of the mounting seat 10 through a third shaft pin; the seventh hole 12b of the second connecting block 12 is rotatably connected to the first support arm 10a of the mounting seat 10 by a fourth shaft pin. The fifth hole 11c of the first connecting block 11 is rotatably connected with the tenth hole 13b of the pressing claw 13 through a fifth shaft pin; the eighth hole 12c of the second connecting block 12 is rotatably connected to the ninth hole 13a of the pressing claw 13 by a sixth shaft pin.

When a piston rod of the second air cylinder 7 extends out, the step block 8 is pushed forwards, the guide pin 9 rises along with the height of the surface of the step block 8 through the matching of the guide inclined surface 8a and the guide cambered surface 9a, and the first connecting block 11 and the second connecting block 12 drive the pressing claw 13 to move downwards to lock the template through the lever principle.

The step block 8 can keep the position of the guide pin 9 unchanged under the condition that the second air cylinder 7 is cut off, so that the pressing claw 13 is not enabled to release the template, and sewing errors are avoided, and the quality is not influenced.

A spring 15 is sleeved on a bolt 14 used for connecting the first supporting arm 10a with the seventh hole 12b of the second connecting block 12 on the mounting seat 10, the bolt 14 is mounted on the mounting seat 10, the piston rod of the second cylinder 7 retracts, and the spring 15 is matched with the bolt 14 to lift the pressing claw 13 through the elastic force of the spring 15.

The bottom end of the mounting seat 10 is provided with a positioning convex body 16 matched with the template, and the positioning convex body 16 is provided with a limiting plate 17 for limiting the pressing height of the first connecting block 11, so that the pressing distance of the pressing claw 13 is limited.

The pressure raising frame structure comprises a first cylinder 1, a piston rod of the first cylinder 1 is fixedly connected with one end of a third connecting plate 2, and the other end of the third connecting plate 2 is connected with a fourth connecting plate 3. Fourth connecting plate 3 is "L" shape, and the back and the fourth slider 4 of fourth connecting plate 3 are connected, and vertical slide rail 5 is installed on second connecting plate 18, fourth slider 4 and vertical slide rail 5 direction cooperation. The bottom surface of the fourth connecting plate 3 is connected with a frame 6 for pressing cloth, and the frame 6 is driven to move up and down to lift and press the frame.

Claims

1. The utility model provides a sewing machine's material feeding unit, includes XY pay-off drive mechanism, template locking structure and lifts and presses frame structure, characterized by: the template locking structure comprises a second air cylinder (7), a piston rod of the second air cylinder (7) is connected with a step block (8), and the step block (8) is provided with a guide inclined plane (8 a); the lower end of the guide pin (9) is provided with a guide cambered surface (9a) matched with the guide inclined surface (8a) of the step block (8); a first hole (9b) on the guide pin (9) is rotationally connected with a sixth hole (12a) of the second connecting block (12) through a first shaft pin; the second hole (9c) on the guide pin (9) is rotatably connected with the third hole (11a) of the first connecting block (11) through a second shaft pin; a fourth hole (11b) of the first connecting block (11) is rotatably connected with a second supporting arm (10b) of the mounting seat (10) through a third shaft pin; a seventh hole (12b) of the second connecting block (12) is rotatably connected with a first supporting arm (10a) of the mounting seat (10) through a fourth shaft pin; the fifth hole (11c) of the first connecting block (11) is rotationally connected with the tenth hole (13b) of the pressing claw (13) through a fifth shaft pin; the eighth hole (12c) of the second connecting block (12) is rotatably connected with the ninth hole (13a) of the pressing claw (13) through a sixth shaft pin.

2. The feeding device of claim 1, wherein: the mounting seat (10) is provided with a bolt (14), and the bolt (14) is sleeved with a spring (15) for driving the pressing claw (13) to lift and reset.

3. The feeding device of claim 1, wherein: the bottom of mount pad (10) is installed and is connected location convex body (16) with the template, location convex body (16) on be equipped with and be used for restricting first connecting block (11) limiting plate (17) of descending height.

4. The feeding device as set forth in claim 1, wherein: the XY feeding transmission mechanism comprises an X-axis motion structure and a Y-axis motion structure.

5. The feeding device of claim 4, wherein: the X-axis movement structure comprises an X motor arranged in a sewing machine main body (40); the X motor is connected with a first gear (36) through a driving gear, the first gear (36) is sleeved on the spline shaft (35) in a sliding mode and is fixedly connected with a spline sleeve (43) on the spline shaft (35); the front end of the spline shaft (35) is connected with a second gear (37), and the second gear (37) is meshed with a rack (26) on the second connecting plate (18).

6. The feeding device of claim 4, wherein: the Y-axis motion structure comprises a transmission shaft (32) driven by a Y motor, wherein the transmission shaft (32) drives a support (27) to move in the Y-axis direction through a driving wheel (31) and a synchronous belt (29).