Needle pitch adjusting mechanism for flat seaming machine

Abstract

The utility model discloses a stitch length adjusting mechanism for a flat seaming machine, which belongs to the technical field of flat seaming machines, and comprises a feed dog assembly and a stitch length adjusting assembly, the feed dog assembly comprises feed dogs, an eccentric wheel, a main shaft, a synchronizing part, a driven gear and a feed dog motor, and the stitch length adjusting assembly comprises a stitch length adjusting motor, a driving gear and a driver. The stitch length adjusting motor and the feed dog motor are respectively provided with an output shaft, the driving gear is movably arranged on the output shaft of the stitch length adjusting motor, the driver is in driving connection with the driving gear, the driven gear is fixedly arranged on the output shaft of the feed dog motor, and the feed dog motor is arranged on the driven gear. The driving gear is movably meshed with the driven gear, the synchronizing part is connected with an output shaft of the feed dog motor and one end of the main shaft, the other end of the main shaft is connected with the eccentric wheel, the feed dog is arranged on the main shaft, and the eccentric wheel is connected with the feed dog.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of binding machine, especially relates to a stitch length adjusting mechanism for binding machine. BACKGROUND

[0002] The binding machine is a kind of high-efficiency, accurate sewing equipment, mainly used for the sewing of two or more layers of sewing material, and is especially suitable for sewing knitted garments, such as sweatshirts, underpants, sportswear, etc. The working principle of the binding machine is based on the cooperation of shuttle and needle, and the sewing of cover chain stitch is completed through the coordinated operation of the head, the table plate and the frame.

[0003] At present, the stitch length adjusting mechanism of the binding machine generally adjusts the distance between the needle plate and the needle rod to realize the adjustment of the stitch length, which can be completed by manually rotating an adjusting knob or using an electric control system. However, this adjusting method has poor accuracy, and the stitch length is unstable and the working efficiency is low after being opened. UTILITY MODEL CONTENTS

[0004] In order to solve the problems of poor accuracy, instability after opening the stitch length and low working efficiency caused by adjusting the distance between the needle plate and the needle rod to realize the adjustment of the stitch length, the utility model provides a stitch length adjusting mechanism for binding machine, which can improve the accuracy, is still stable after opening the stitch length and has high working efficiency.

[0005] The technical scheme of the utility model is as follows:

[0006] The stitch length adjusting mechanism for binding machine comprises a fabric feeding tooth assembly and a stitch length adjusting assembly. The fabric feeding tooth assembly comprises a fabric feeding tooth, an eccentric wheel, a main shaft, a synchronizing part, a driven gear and a fabric feeding tooth motor. The stitch length adjusting assembly comprises a stitch length adjusting motor, a driving gear and a driver. The stitch length adjusting motor and the fabric feeding tooth motor are each provided with an output shaft. The driving gear is movably arranged on the output shaft of the stitch length adjusting motor. The driver is drivingly connected with the driving gear. The driven gear is fixedly arranged on the output shaft of the fabric feeding tooth motor. The driving gear is movably engaged with the driven gear. The synchronizing part is connected with the output shaft of the fabric feeding tooth motor and one end of the main shaft. The other end of the main shaft is connected with the eccentric wheel. The fabric feeding tooth is arranged on the main shaft, and the eccentric wheel is connected with the fabric feeding tooth.

[0007] Further, a speed reducer is arranged on the stitch length adjusting motor.

[0008] Further, the driver comprises a clutch cylinder, a driving rod and a pull fork. One end of the driving rod is connected with the clutch cylinder, and the other end of the driving rod is connected with the pull fork. The pull fork clamps the driving gear.

[0009] Further, the pause assembly comprises a locking cylinder and a positioning pin, the locking cylinder is arranged above the positioning pin and can be extended to touch the positioning pin, and the positioning pin is arranged above the eccentric wheel.

[0010] Further, the synchronizing component comprises a first synchronizing wheel, a second synchronizing wheel and a synchronizing belt, the first synchronizing wheel is fixedly arranged on the output shaft of the cloth feeding tooth motor, the second synchronizing wheel is fixedly arranged on one end of the main shaft, and the synchronizing belt is sleeved on the first synchronizing wheel and the second synchronizing wheel.

[0011] Further, the clutch cylinder is arranged in parallel with the driving rod.

[0012] Further, a vertical connecting piece is arranged between the clutch cylinder and the driving rod.

[0013] The beneficial effects of the present application are as follows:

[0014] The principle of adjusting the eccentric amount of the eccentric wheel to change the movement track of the cloth feeding tooth is adopted to realize the adjustment of the needle spacing, the eccentric amount of the eccentric wheel is indirectly adjusted through the arrangement of the needle spacing adjustment assembly, more flexible and accurate control can be realized, the needle spacing adjustment motor can provide greater torque and stability, so that the needle spacing adjustment is more accurate, the needle spacing can be kept stable after being opened, and the working efficiency is high. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 It is a whole structure schematic view of the needle spacing adjustment mechanism for the binding sewing machine.

[0016] Figure 2 It is a structure schematic view of the needle spacing adjustment assembly of the needle spacing adjustment mechanism for the binding sewing machine.

[0017] Figure 3 It is an enlarged structure schematic view of the pause assembly of the needle spacing adjustment mechanism for the binding sewing machine.

[0018] Figure 4 It is an enlarged structure schematic view of the synchronizing component of the needle spacing adjustment mechanism for the binding sewing machine.

[0019] Reference numerals: 1, feed dog assembly, 11, feed dog, 12, eccentric wheel, 13, main shaft, 14, synchronizing part, 141, first synchronizing wheel, 142, second synchronizing wheel, 143, synchronous belt, 15, driven gear, 16, feed dog motor, 2, stitch adjustment assembly, 21, stitch adjustment motor, 22, driving gear, 23, driver, 231, clutching cylinder, 232, driving rod, 233, pull fork, 234, vertical connecting part, 24, decelerating part, 3, pausing assembly, 31, locking cylinder, 32, positioning pin, 4, output shaft. DETAILED DESCRIPTION

[0020] In order to make the technical problems, technical solutions and beneficial effects of the present application clearer, the present application will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and do not limit the present application.

[0021] It should be noted that when an element is referred to as being "mounted on", "provided on", "covered on", "sleeved on", "clamped on" another element, it can be directly on the other element or indirectly on the other element.

[0022] It should be understood that in the description of the present application, the meaning of "several" is two or more than two, unless otherwise explicitly and specifically limited.

[0023] In addition, the orientations or positional relationships indicated by the terms "inner", "upper", "between", "two sides", "one side", "top", "bottom", "side edge" and the like are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0024] It should be noted that the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features limited by "first", "second", "third" and the like can explicitly or implicitly include one or more of the features.

[0025] It should be noted that "and / or" in this paper is only a description of the association relationship between the associated objects, which means that there can be three relationships, for example, A and / or B, which means that there are three cases of A alone, A and B together, and B alone. Wherein, A and B can be singular or plural. EMBODIMENT

[0026] Please refer to Figures 1-4The utility model provides a stitch length adjusting mechanism for binding machine, including cloth feeding tooth subassembly 1 and stitch length adjusting assembly 2, cloth feeding tooth subassembly 1 includes cloth feeding tooth 11, eccentric wheel 12, main shaft 13, synchronous part 14, driven gear 15 and cloth feeding tooth motor 16, stitch length adjusting assembly 2 includes stitch length adjusting motor 21, driving gear 22 and driver 23, stitch length adjusting motor 21 and cloth feeding tooth motor 16 all are equipped with output shaft 4, driving gear 22 can be removed and set on the output shaft 4 of stitch length adjusting motor 21, driver 23 drives and connects driving gear 22, driven gear 15 is fixedly arranged on the output shaft 4 of cloth feeding tooth motor 16, driving gear 22 can remove and engage driven gear 15, synchronous part 14 connects the output shaft 4 of cloth feeding tooth motor 16 and one end of main shaft 13, the other end of main shaft 13 is connected with eccentric wheel 12, cloth feeding tooth 11 is arranged on main shaft 13, and eccentric wheel 12 is connected with cloth feeding tooth 11.

[0027] Working process is:

[0028] Cloth feeding tooth motor 16 works, drives synchronous part 14 on its output shaft 4 and main shaft 13 to rotate, and then drives eccentric wheel 12 to rotate, drives cloth feeding tooth 11 to do reciprocating motion.

[0029] When needing to adjust stitch length, cloth feeding tooth motor 16 stops working, driver 23 controls driving gear 22 to move to the side of driven gear 15, and driving gear 22 and driven gear 15 engage, stitch length adjusting motor 21 works, driving gear 22 and driven gear 15 rotate simultaneously, drive synchronous part 14 to work, adjust eccentric amount of eccentric wheel 12 through the rotation of main shaft 13, thereby adjusting stitch length.

[0030] Therefore, the principle of adjusting eccentric amount of eccentric wheel 12 to change the motion track of cloth feeding tooth 11 is adopted to realize the adjustment of stitch length, and the eccentric amount of eccentric wheel 12 is indirectly adjusted by setting stitch length adjusting assembly 2, so that more flexible and accurate control can be realized, stitch length adjusting motor 21 can provide greater torque and stability, so that the adjustment of stitch length is more accurate, the stitch length can still be kept stable after being opened, and the working efficiency is high.

[0031] Further, a speed reducer 24 is arranged on the stitch length adjusting motor 21, the speed reducer 24 is also connected with the output shaft 4 of the stitch length adjusting motor 21, the torque can be increased through the speed reducer 24, the control accuracy is further increased, and automatic control can be realized according to needs.

[0032] Specifically, the driver 23 comprises a clutch cylinder 231, a driving rod 232 and a pull fork 233, one end of the driving rod 232 is connected to the clutch cylinder 231, the other end of the driving rod 232 is connected to the pull fork 233, the pull fork 233 holds the driving gear 22, the clutch cylinder 231 drives the driving rod 232 and the pull fork 233 to perform extension and retraction movement, and drives the driving gear 22 to move on the output shaft 4 of the pitch adjusting motor 21, when the pitch adjustment is needed, the driving gear 22 is driven to engage with the driven gear 15; when the pitch adjustment is not needed, the driving gear 22 is reset, and the driving gear 22 does not engage with the driven gear 15.

[0033] Further, in order to more safely adjust the pitch, a pause assembly 3 is further included, the pause assembly 3 comprises a locking cylinder 31 and a positioning pin 32, the locking cylinder 31 is arranged above the positioning pin 32, and the locking cylinder 31 can extend to touch the positioning pin 32, the positioning pin 32 is arranged above the eccentric wheel 12, and the eccentric wheel 12 is locked by the locking cylinder 31 pressing the positioning pin 32, and the driving feed dog 11 is paused from reciprocating movement.

[0034] Specifically, the synchronization member 14 comprises a first synchronization wheel 141, a second synchronization wheel 142 and a synchronization belt 143, the first synchronization wheel 141 is fixedly arranged on the output shaft 4 of the feed dog motor 16, the second synchronization wheel 142 is fixedly arranged on one end of the main shaft 13, and the synchronization belt 143 is sleeved on the first synchronization wheel 141 and the second synchronization wheel 142.

[0035] Preferably, the synchronization wheel can be replaced by a cam, and the synchronization belt 143 can be replaced by a chain.

[0036] Further, in order to make the structure of the flat seaming machine more compact, the clutch cylinder 231 is arranged in parallel with the driving rod 232.

[0037] Further, a vertical connecting member 234 is arranged between the clutch cylinder 231 and the driving rod 232, and the driving rod 232 performs extension and retraction movement in parallel with the clutch cylinder 231 through the vertical connecting member 234. Embodiment

[0038] The difference from the embodiment 1 is that the synchronization member 14 and the main shaft 13 are omitted, the output shaft 4 of the feed dog motor 16 is directly connected to drive the eccentric wheel 12, and the pitch adjusting assembly 2 also needs to be arranged close to the feed dog motor 16.

[0039] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A stitch length adjustment mechanism for a flat seaming machine, characterized by, The utility model provides a knitting machine needle gauge adjusting device, including the feed dog assembly (1) and the needle gauge adjusting assembly (2), the feed dog assembly (1) includes feed dog (11), eccentric wheel (12), main shaft (13), synchronization (14), driven gear (15) and feed dog motor (16), the needle gauge adjusting assembly (2) includes needle gauge adjusting motor (21), driving gear (22) and driver (23), needle gauge adjusting motor (21) and feed dog motor (16) are equipped with output shaft (4), driving gear (22) can be removed and is arranged on the output shaft (4) of needle gauge adjusting motor (21), driver (23) drivingly connected driving gear (22), driven gear (15) is fixedly arranged on the output shaft (4) of feed dog motor (16), driving gear (22) can remove and engage driven gear (15), synchronization (14) is connected the output shaft (4) of feed dog motor (16) and one end of main shaft (13), the other end of main shaft (13) is connected eccentric wheel (12), feed dog (11) is located on main shaft (13), and eccentric wheel (12) is connected feed dog (11).

2. The gauge adjustment mechanism for a flat seaming machine according to claim 1, characterized in that, The needle gauge adjusting motor (21) is provided with a speed reducer (24).

3. The gauge adjustment mechanism for a flat seaming machine according to claim 1, wherein The driver (23) includes a clutch cylinder (231), a driving rod (232), and a pull fork (233). One end of the driving rod (232) is connected to the clutch cylinder (231). The other end of the driving rod (232) is connected to the pull fork (233). The pull fork (233) clamps the driving gear (22).

4. The gauge adjustment mechanism for a flat seaming machine according to claim 1, wherein It also includes a pause assembly (3), which includes a locking cylinder (31) and a positioning pin (32). The locking cylinder (31) is arranged above the positioning pin (32), and the locking cylinder (31) can be extended to touch the positioning pin (32). The positioning pin (32) is arranged above the eccentric wheel (12).

5. The gauge adjustment mechanism for a flat seaming machine according to claim 1, wherein The synchronization (14) includes a first synchronous wheel (141), a second synchronous wheel (142), and a synchronous belt (143). The first synchronous wheel (141) is fixedly arranged on the output shaft (4) of the feed dog motor (16). The second synchronous wheel (142) is fixedly arranged on one end of the main shaft (13). The synchronous belt (143) is sleeved on the first synchronous wheel (141) and the second synchronous wheel (142).

6. The gauge adjustment mechanism for a flat seaming machine according to claim 3, wherein The clutch cylinder (231) and the driving rod (232) are arranged in parallel.

7. The stitch regulation mechanism for a flat seaming machine according to claim 6, characterized in that, A vertical connecting piece (234) is arranged between the clutch cylinder (231) and the driving rod (232).

Images