CN217809967U

CN217809967U - Rocker arm mechanism of side sewing machine

Info

Publication number: CN217809967U
Application number: CN202221494789.7U
Authority: CN
Inventors: 徐晓兵
Original assignee: Wenzhou Jinkai Shoes Machinery Manufacturing Co ltd
Current assignee: Wenzhou Jinkai Shoes Machinery Manufacturing Co ltd
Priority date: 2022-06-14
Filing date: 2022-06-14
Publication date: 2022-11-15
Anticipated expiration: 2032-06-14

Abstract

The utility model relates to a rocker arm mechanism of side sewing machine, which comprises a base, be equipped with rotating shuttle rotating assembly, faller transmission component, rotating shuttle power input subassembly, location transmission assembly and rocking arm on the base, rotating shuttle rotating assembly is including colluding line ware and rotating shuttle driving medium, rotating shuttle power input subassembly includes first action wheel, first driving band, the first driving wheel that is connected with external power source, first transmission shaft and transmission sprocket group from the driving wheel, first transmission shaft set up along horizontal direction, first from the driving wheel setting on first transmission shaft, and realize rotating through first transmission band between first driven wheel and the first action wheel and be connected, first transmission shaft and rotating shuttle driving medium between realize the transmission through transmission sprocket group and be connected. Adopt above-mentioned technical scheme, the utility model provides a rocker arm mechanism of side sewing machine, it passes through gear fit transmission and sprocket complex transmission mode for the overall structure of rocking arm is compact, and the transmission is reliable.

Description

Rocker arm mechanism of side sewing machine

Technical Field

The utility model belongs to the technical field of the sewing machine technique and specifically relates to a rocker mechanism of side sewing machine is related to.

Background

The traditional side sewing machine consists of a machine head, a base and a rocker arm, wherein the machine head and the rocker arm are matched in a reciprocating swing mode to finish sewing work on a product, and the rocker arm is matched with an external power source and a gear to realize the work of the rocker arm.

The utility model discloses a "leather bag sewing machine structure" that current chinese utility model patent grant publication No. CN2500696 discloses, including a board, a U type rocker body, a collude line ware drive mechanism, a constant position swing mechanism and a sewing link gear, by the portion of actuating locate the inboard at front stall top, and wear to locate in the first main shaft by the second main shaft of sewing link gear, and have and to be applicable to the leather bag that thickness is thin, the preparation of big leather suitcase even, simultaneously through adopting belt and belt pulley to link collude line ware drive mechanism and constant position swing mechanism, can effectively avoid taking off a chain and produce a plurality of problems such as jump needle, broken string and noise, and can practice thrift manufacturing cost. But still have the disadvantages: because the turning joint in the U-shaped rocker arm body adopts a universal joint connection transmission mode, the universal joint is composed of extremely small parts, namely a pin, a sleeve and a sliding block, the universal joint is extremely easy to wear in the rotation process, gaps are generated, the phenomena of inaccurate transmission, needle breakage and the like are caused, and even the problems of universal joint fracture and the like are caused.

Disclosure of Invention

The utility model aims at: in order to overcome the defects of the prior art, the utility model provides a rocker arm mechanism of side sewing machine, it passes through gear cooperation transmission and sprocket complex transmission mode for the overall structure of rocking arm is compact, and the transmission is reliable.

The technical scheme of the utility model: a rocker arm mechanism of a side sewing machine comprises a base, wherein a rotating shuttle rotating assembly, a needle plate transmission assembly, a rotating shuttle power input assembly, a positioning transmission assembly and a rocker arm are arranged on the base, the rotating shuttle rotating assembly comprises a thread hooking device, a rotating shuttle and a rotating shuttle transmission member, the rotating shuttle and the rotating shuttle transmission member are integrally arranged to realize synchronous rotation of the rotating shuttle and the rotating shuttle transmission member, the thread hooking device and the rotating shuttle synchronously rotate, a cavity is arranged on the thread hooking device, a shuttle shell and a shuttle core are arranged in the cavity, the shuttle core is arranged in the shuttle shell and connected with the shuttle shell, the needle plate transmission assembly comprises a needle plate seat and a needle plate fixedly arranged on the needle plate seat, an accommodating cavity is arranged on the needle plate seat, the thread hooking device is arranged in the accommodating cavity, the rotating shuttle power input assembly provides power for the rotating shuttle rotating assembly and drives the thread hooking device to rotate to realize knotting, the positioning transmission assembly is connected with the rocker arm, the needle plate positioning device is characterized in that the rotating shuttle rotating assembly further comprises a horn head and a horn cover, the horn head and the horn cover are connected to form an installation cavity, the rotating shuttle, the thread hooking device, the rotating shuttle transmission member and the needle plate seat are all arranged in the installation cavity, a hollow central shaft sleeve is arranged on one side of the rotating shuttle close to the rotating shuttle transmission member, the rotating shuttle transmission member is arranged on the central shaft sleeve, an installation shaft is arranged in the installation cavity, the central shaft sleeve is sleeved on the installation shaft, the rotating shuttle power input assembly comprises a first driving wheel, a first driving belt, a first driven wheel, a first transmission shaft and a transmission chain wheel set, the first driving shaft is arranged along the transverse direction, the first driven wheel is arranged on the first transmission shaft, and the first driven wheel and the first driving wheel are connected in a rotating mode through the first transmission belt, the first transmission belt is arranged in the vertical direction and perpendicular to the first transmission shaft, the first transmission shaft and the rotating shuttle transmission part are connected in a transmission mode through the transmission chain wheel set, the positioning transmission assembly comprises a second driving wheel, a second transmission belt, a second driven wheel and a second transmission shaft, the second transmission belt is arranged in parallel to the first transmission belt, the second transmission shaft is sleeved on the periphery of the first transmission shaft, the second driven wheel is arranged at one end of the second transmission shaft, the second driven wheel and the second driving wheel are connected in a rotating mode through the second transmission belt, and the other end of the second transmission shaft is connected with the needle plate seat in a transmission mode through the transmission bevel gear set.

By adopting the technical scheme, firstly, the central shaft sleeve and the rotating shuttle are concentrically arranged, the rotating shuttle is matched with a needle on a side sewing machine, and the rotating shuttle and a rotating shuttle transmission part are integrally arranged to realize synchronous rotation, so that the reliable uniform rotation of the rotating shuttle can be effectively ensured, simultaneously, the hook line matching of the rotating shuttle and the needle is stable and reliable, and the occurrence of missed stitches can be effectively reduced.

The utility model discloses a further set up: the transmission chain wheel set comprises a driving chain wheel and a chain, the driving chain wheel is arranged at the end part of the first transmission shaft, the rotating shuttle transmission part is arranged by adopting a driven chain wheel, the driving chain wheel and the driven chain wheel are in transmission connection through the chain, and the driven chain wheel and the rotating shuttle are integrally arranged.

By adopting the further arrangement, the driving chain wheel is driven to rotate through the rotation of the first transmission shaft, the rotating shuttle transmission part is driven to rotate through the chain, the thread hooking device is driven to rotate, the thread hooking device is matched with the machine needle to realize the sewing of stitches, and the transmission structure is simple.

The utility model discloses a further setting again: the needle plate transmission assembly further comprises a gear ring connected with the needle plate seat, the transmission bevel gear set comprises a first bevel gear, a second bevel gear and a third transmission shaft, the first bevel gear is arranged at the other end of the second transmission shaft, the second bevel gear is arranged at the end part of the third transmission shaft and meshed with the first bevel gear, the third transmission shaft is arranged in parallel with the second transmission belt, the other end of the third transmission shaft is provided with a bevel gear rod, a gear meshed with the gear ring is arranged in the installation cavity, one side of the gear is provided with the third bevel gear, and the third bevel gear is meshed with the bevel gear rod to realize positioning transmission of the needle plate.

By adopting the above further arrangement, the second transmission shaft rotates to drive the first bevel gear to rotate, the first bevel gear is meshed with the second bevel gear to drive the third transmission shaft to rotate, and then the bevel gear rod and the third bevel gear are driven to rotate, so as to drive the gear and the gear ring to rotate.

The utility model discloses a still further set up: the first transmission sleeve is provided with a plurality of embedded grooves, the second transmission sleeve is correspondingly provided with a plurality of embedded feet, and the embedded grooves and the embedded feet are mutually embedded and locked to realize the fixed connection of the first transmission sleeve and the second transmission sleeve.

Adopt above-mentioned still further setting, easy dismounting is convenient for the installation between third transmission shaft and the bevel gear stick.

The utility model discloses a still further set up: the base comprises a vertical supporting sleeve, a supporting seat and Niu Jiao, the vertical supporting sleeve is sleeved on the second transmission sleeve, the supporting seat is of an L-shaped structure and is sleeved on the second transmission shaft, a sleeved portion which extends along the vertical direction and is hollow inside is formed on the supporting seat towards the vertical supporting sleeve, the vertical supporting sleeve is embedded in a hollow cavity of the sleeved portion, niu Jiao is hollow inside and consists of a horn seat sleeved portion and a horn seat hollow column which are perpendicular to each other, one end, far away from the sleeved portion, of the supporting seat is arranged in the horn seat sleeved portion, and the first transmission belt and the second transmission belt are arranged in the hollow cavity of the horn seat hollow column.

By adopting the above further arrangement, the structure is stable, the positioning transmission assembly is coated, the exposure is prevented, the service life is long, and the safety is higher.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present invention;

FIG. 2 is an internal schematic view of an embodiment of the present invention;

FIG. 3 is a schematic view of a positioning transmission assembly according to an embodiment of the present invention;

FIG. 4 is a schematic view of a rotary shuttle power input assembly in accordance with an embodiment of the present invention;

FIG. 5 is a side view of a rotary shuttle power input assembly in accordance with an embodiment of the present invention;

fig. 6 is an exploded view of the transmission assembly of the thread catcher according to the embodiment of the present invention;

fig. 7 is a cross-sectional view of a base according to an embodiment of the present invention.

Detailed Description

The technical solutions in the embodiments will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.

It should be noted that all the directional indicators (such as upper, lower, front and rear … …) in the description of the present invention are only used to explain the relative position relationship between the components, the motion situation, etc. in a specific posture (as shown in the drawings), and if the specific posture is changed, the directional indicator is changed accordingly.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless explicitly defined otherwise.

In addition, the technical solutions of the embodiments of the present invention can be combined with each other, but it is necessary to use the technical solutions that can be realized by those skilled in the art as a basis, and when the technical solutions are combined and contradictory or cannot be realized, the combination of the technical solutions should not exist, and is not within the protection scope of the present invention.

As shown in fig. 1 to 7, a rocker arm mechanism of a side sewing machine includes a base 1, a rotating shuttle rotating assembly 2, a needle plate transmission assembly 3, a rotating shuttle power input assembly 4, a positioning transmission assembly 5 and a rocker arm are arranged on the base 1, the rotating shuttle rotating assembly 2 includes a thread hooking device 21, a rotating shuttle 20 and a rotating shuttle transmission member 22, the rotating shuttle 20 and the rotating shuttle transmission member 22 rotate synchronously, the thread hooking device 21 and the rotating shuttle 20 rotate synchronously, a shuttle point 211 is formed on the thread hooking device 21, a first notch 212 is formed between the shuttle point 211 and a body of the thread hooking device 21, and a shuttle hook 200 on the rotating shuttle 20 is inserted into the first notch 212 of the thread hooking device 21 after passing through a gear ring 56, so that the rotating shuttle 20 can drive the thread hooking device 21 to rotate together; the thread hooking device 21 is provided with a cavity, the cavity is internally provided with a bobbin case 26 and a bobbin 27, the bobbin 27 is arranged in the bobbin case 26, the bobbin case 26 is connected, when in sewing, a bottom thread is positioned on the bobbin 27, a power source of a side sewing machine is transmitted to the rotary shuttle 20 through various parts in a rocker arm, the rotary shuttle 20 pushes the thread hooking device 21 to perform interval variable speed rotation through a shuttle hook 200, which is shown in figure 6, the needle plate transmission component 3 comprises a needle plate seat 31 and a needle plate 32 fixedly arranged on the needle plate seat 31, the needle plate seat 31 is provided with a containing cavity, the thread hooking device 21 is arranged in the containing cavity, the rotary shuttle power input component 4 provides power for the rotary shuttle rotation component 2 and drives the thread hooking device 21 to rotate to realize knotting, the positioning transmission component 5 is connected with the rocker arm, and the positioning transmission component 5 can realize positioning transmission of the needle plate transmission component 3 and position positioning of the needle plate 32, the rotating shuttle rotating component 2 further comprises a bull horn head 23 and a bull horn cover 24, the bull horn head 23 is connected with the bull horn cover 24 to form an installation cavity 25, the rotating shuttle 20, the thread hooking device 21, the rotating shuttle transmission member 22 and the needle plate seat 31 are all arranged in the installation cavity 25, the bull horn cover 24 is provided with an installation groove 241 communicated with the installation cavity 25, the needle plate 32 is arranged in the installation groove 241 and fixedly connected with the needle plate seat 31, one side of the rotating shuttle 20 close to the rotating shuttle transmission member 22 is provided with a hollow central shaft sleeve 201, the rotating shuttle transmission member 22 is arranged on the central shaft sleeve 201, an installation shaft 251 is arranged in the installation cavity 25, the central shaft sleeve 201 is sleeved on the installation shaft 251, the rotating shuttle power input component 4 comprises a first driving wheel 41 connected with an external power source, a first driving belt 42, a first driven wheel 43, a first driving shaft 44 and a transmission chain wheel set 45, an external power source is arranged by adopting a motor, the first transmission shaft 44 is arranged along the transverse direction, the first driven wheel 43 is arranged on the first transmission shaft 44, the first driven wheel 43 is rotatably connected with the first driving wheel 41 through the first transmission belt 42, the first transmission belt 42 is arranged along the vertical direction and is perpendicular to the first transmission shaft 44, the first transmission shaft 44 is in transmission connection with the rotating shuttle transmission member 22 through a transmission chain wheel set 45, the positioning transmission assembly 5 comprises a second driving wheel 51, a second transmission belt 52, a second driven wheel 53 and a second transmission shaft 54, the base is provided with a fixing sleeve 11, the second driving wheel 51 is arranged on the fixing sleeve 11, the second transmission belt 52 is arranged in parallel with the first transmission belt 42, the second transmission shaft 54 is sleeved on the periphery of the first transmission shaft 44, and the second driven wheel 53 is arranged at one end of the second transmission shaft 54, and the second driven wheel 53 is rotatably connected with the second driving wheel 51 through a second transmission belt 52, and the other end of the second transmission shaft 54 is in transmission connection with the needle plate seat 31 through a transmission bevel gear set 55, firstly, because the central shaft sleeve 211 and the rotating shuttle 20 are concentrically arranged, the rotating shuttle 20 is matched with a needle on a side sewing machine, and the rotating shuttle 20 and the rotating shuttle transmission member 22 synchronously rotate, so that the reliable uniform rotation of the thread hooking device 21 can be effectively ensured, meanwhile, the thread hooking device 21 and the needle are stably and reliably matched, and the occurrence of missed stitches can be effectively reduced, secondly, the rotating shuttle power input assembly 4 realizes transmission through the matching of the transmission belt and a chain wheel set, the positioning transmission assembly 5 realizes transmission through the matching of the transmission belt and the gear as well as the transmission shaft and the bevel gear, and the transmission structures of the positioning transmission assembly and the gear are not interfered with each other, and compared with a universal joint connection transmission mode, the transmission mode of the transmission mode effectively solves the problem that gaps exist at the connection positions of related parts, and the gaps exist and the transmission structure does not interfere with each other The fit is not tight, and the stability and reliability of transmission are improved; in addition, the second transmission shaft is sleeved on the periphery of the first transmission shaft, so that the space layout can be optimized, and the space occupation can be reduced.

Specifically, transmission sprocket group 45 includes drive sprocket 451 and chain 452, drive sprocket 451 sets up at first transmission shaft 44 tip, rotating shuttle driving medium 22 adopts the driven sprocket setting, drive sprocket 451 and driven sprocket 22 between realize the transmission through chain 452 and be connected, outside first transmission shaft 44 both ends all extended to second transmission shaft 54, one pot head was equipped with first follow driving wheel, another pot head was equipped with drive sprocket 451, driven sprocket and rotating shuttle 20 an organic whole set up, rotate through first transmission shaft 44 and drive sprocket 451 and rotate to drive rotating shuttle driving medium 22 through chain 452 and rotate, and then drive rotating shuttle 20 and rotate, make the sewing of stitch, transmission simple structure are realized with the eedle cooperation to collude line ware 21.

Specifically, the needle board transmission assembly 5 further includes a gear ring 56 connected to the needle board seat 31, the transmission bevel gear set 55 includes a first bevel gear 551, a second bevel gear 552 and a third transmission shaft 553, the first bevel gear 551 is disposed at the other end of the second transmission shaft 54, the second bevel gear 552 is disposed at the end of the third transmission shaft 553 and is engaged with the first bevel gear 551, the third transmission shaft 553 is disposed in parallel with the second transmission belt 53, a chain 452 is disposed at the outer periphery of the third transmission shaft 553, the other end of the third transmission shaft 553 is provided with a bevel gear rod 554, a gear 7 engaged with the gear ring 56 is disposed in the installation cavity 25, a third bevel gear 71 is disposed at one side of the gear 7, the third bevel gear 71 is engaged with the bevel gear rod 554 to realize the positioning transmission of the needle board 32, the second transmission shaft 54 rotates to drive the first bevel gear 551, the first bevel gear 551 is engaged with the second bevel gear 552, the third transmission shaft 553 is driven to rotate, and then the bevel gear rod 554 and the third bevel gear 71 are driven to rotate, so as to drive the gear 7 and the gear ring 56 to rotate, because the second driving wheel 51 arranged in the cavity of the rocker arm is fixed on the fixing sleeve 11, the fixing sleeve 11 is fixed, so the second driving wheel 51 is also fixed, and the second driven wheel 53 is driven to rotate along with the rotation of the rocker arm, and the rotation direction is opposite to the rotation direction of the rocker arm, at this time, the torque is transmitted to the needle plate seat 31 through the second transmission shaft 54, the bevel gear rod, the matching of the gear and the gear ring, and the needle plate seat 31 is also driven to rotate in the opposite direction relative to the rocker arm, and the rotation speed of the rocker arm is the same as the rotation speed of the needle plate seat but the rotation directions of the two are opposite through setting the gear tooth number transmission ratio, so that the needle plate seat is kept stationary relative to the second transmission belt wheel, and the needle plate is also kept still so as to keep the positioning of the needle plate 32, and the transmission structure is simple.

The base is including vertical supporting sleeve 8, bearing 9 and ox horn seat 10, vertical supporting sleeve 8 cover is established on second transmission cover 35, bearing 9 is "L" shape structure and cover and establishes on second transmission shaft 54, and this bearing 9 is formed with and extends the hollow portion of cup jointing that sets up and inside along vertical direction towards vertical supporting sleeve 8, vertical supporting sleeve 8 inlays and establishes in the cavity die cavity of this portion of cup jointing, the inside cavity of ox horn seat 10 just comprises mutually perpendicular ox horn seat cover spare and ox horn seat cavity post, bearing 9 is kept away from the one end setting of portion of cup jointing is in the ox horn seat cover spare, first drive belt 42 and second drive belt 52 all set up in the cavity die cavity of ox horn seat cavity post, and stable in structure wraps the location transmission subassembly, prevents to expose, makes its long service life to it is safer.

The positioning transmission assembly is arranged to ensure that the needle plate is positioned in the rotating process of the rocker arm to ensure the matching relation between the needle plate and the thread hooking device, and the needle plate seat can rotate reversely at the same speed when the rocker arm rotates so as to counteract the rotating speed of the rocker arm; the fixed sleeve in the positioning transmission assembly is fixedly connected with an external base and keeps absolutely stationary, when the rocker arm rotates, the second driving wheel arranged in the cavity of the rocker arm is fixed on the fixed sleeve and also keeps stationary, but the rocker arm is fixedly connected with the horn base, the second driven wheel is driven to rotate along with the rotation of the rocker arm, a second transmission belt which is in rotating connection with the second driven wheel also rotates, but the second driving wheel keeps stationary, in the process, the second driving wheel serves as a reference system, the second transmission belt drives the second driven wheel to rotate along the second driving wheel, the second transmission belt does rotating motion and drives the second driven wheel to rotate, the rotating direction is opposite to the rotating direction of the rocker arm, the torque is further transmitted to the needle plate base to enable the needle plate base to rotate in the opposite direction relative to the rocker arm, and the rotating speed of the rocker arm is the same as the rotating speed of the needle plate base but the rotating directions of the second driven wheel are opposite to each other by setting the gear number transmission ratio, so that the needle plate base keeps stationary relative to achieve the purpose of positioning the needle plate.

The utility model discloses an operating principle, the article that at first will make up are arranged in the ox horn overhead, the power supply of side seam machine is in proper order through first action wheel, first driving band, first from driving wheel, first transmission shaft and chain wheel group transmit to the rotating shuttle driving medium, the rotation of drive rotating shuttle driving medium, the rotating shuttle driving medium drives the rotating shuttle and colludes the line ware and do the uniform rotation, and collude the line ware and make the suture action on article with the eedle (not shown in the figure) cooperation of side seam machine to realize making up of stitch seam. When the rocker arm needs to be rotated along with the appearance of an article, the second driving wheel arranged in the cavity of the rocker arm is fixed on the fixing sleeve, and the fixing sleeve is fixed, so that the second driving wheel is also kept still, the second driven wheel can be driven to rotate along with the rotation of the rocker arm, the rotation direction of the second driving wheel is opposite to that of the rocker arm, the torque is transmitted to the needle plate seat through the matching of the second transmission shaft, the bevel gear rod, the gear and the gear ring, the needle plate seat is enabled to rotate in the opposite direction relative to the rocker arm, the rotation speed of the rocker arm is enabled to be the same as that of the needle plate seat but the rotation directions of the rocker arm and the gear ring are opposite through the arrangement of the gear tooth number transmission ratio, the needle plate seat is enabled to be kept still relative to the second transmission belt wheel, and the needle plate is also kept still, so that the positioning of the needle plate is kept.

Claims

1. A rocker arm mechanism of a side sewing machine comprises a base, wherein a rotating shuttle rotating assembly, a needle plate transmission assembly, a rotating shuttle power input assembly, a positioning transmission assembly and a rocker arm are arranged on the base, the rotating shuttle rotating assembly comprises a thread hooking device, a rotating shuttle and a rotating shuttle transmission member, the rotating shuttle and the rotating shuttle transmission member are integrally arranged to realize synchronous rotation of the rotating shuttle and the rotating shuttle transmission member, the thread hooking device and the rotating shuttle synchronously rotate, a cavity is arranged on the thread hooking device, a shuttle shell and a shuttle core are arranged in the cavity, the shuttle core is arranged in the shuttle shell and connected with the shuttle shell, the needle plate transmission assembly comprises a needle plate seat and a needle plate fixedly arranged on the needle plate seat, an accommodating cavity is arranged on the needle plate seat, the thread hooking device is arranged in the accommodating cavity, the rotating shuttle power input assembly provides power for the rotating shuttle rotating assembly and drives the thread hooking device to rotate to realize knotting, the positioning transmission assembly is connected with the rocker arm, the needle plate positioning device is characterized in that the rotating shuttle rotating assembly further comprises a horn head and a horn cover, the horn head and the horn cover are connected to form an installation cavity, the rotating shuttle, the thread hooking device, the rotating shuttle transmission member and the needle plate seat are all arranged in the installation cavity, a hollow central shaft sleeve is arranged on one side of the rotating shuttle close to the rotating shuttle transmission member, the rotating shuttle transmission member is arranged on the central shaft sleeve, an installation shaft is arranged in the installation cavity, the central shaft sleeve is sleeved on the installation shaft, the rotating shuttle power input assembly comprises a first driving wheel, a first driving belt, a first driven wheel, a first transmission shaft and a transmission chain wheel set, the first driving shaft is arranged along the transverse direction, the first driven wheel is arranged on the first transmission shaft, and the first driven wheel and the first driving wheel are connected in a rotating mode through the first transmission belt, the first transmission belt is arranged in the vertical direction and perpendicular to the first transmission shaft, the first transmission shaft and the rotating shuttle transmission part are connected in a transmission mode through the transmission chain wheel set, the positioning transmission assembly comprises a second driving wheel, a second transmission belt, a second driven wheel and a second transmission shaft, the second transmission belt is arranged in parallel to the first transmission belt, the second transmission shaft is sleeved on the periphery of the first transmission shaft, the second driven wheel is arranged at one end of the second transmission shaft, the second driven wheel and the second driving wheel are connected in a rotating mode through the second transmission belt, and the other end of the second transmission shaft is connected with the needle plate seat in a transmission mode through the transmission bevel gear set.

2. The rocker arm mechanism of the side sewing machine according to claim 1, wherein the driving sprocket set comprises a driving sprocket and a chain, the driving sprocket is disposed at an end of the first driving shaft, the rotating shuttle driving member is disposed by using a driven sprocket, the driving sprocket and the driven sprocket are in driving connection by the chain, and the driven sprocket and the rotating shuttle are integrally disposed.

3. The rocker arm mechanism of the side sewing machine according to claim 1 or 2, wherein the needle plate transmission assembly further comprises a gear ring connected with the needle plate seat, the transmission bevel gear set comprises a first bevel gear, a second bevel gear and a third transmission shaft, the first bevel gear is arranged at the other end of the second transmission shaft, the second bevel gear is arranged at the end of the third transmission shaft and meshed with the first bevel gear, the third transmission shaft is arranged in parallel with the second transmission shaft, a bevel gear rod is arranged at the other end of the third transmission shaft, a gear meshed with the gear ring is arranged in the installation cavity, the third bevel gear is arranged on one side of the gear, and the third bevel gear is meshed with the bevel gear rod to realize positioning transmission of the needle plate.

4. The rocker arm mechanism of the side sewing machine as claimed in claim 3, wherein the first transmission sleeve is provided with a plurality of embedding grooves, the second transmission sleeve is correspondingly provided with a plurality of embedding feet, and the embedding grooves and the embedding feet are mutually embedded and locked to realize the fixed connection of the first transmission sleeve and the second transmission sleeve.

5. The rocker arm mechanism of the side sewing machine according to claim 4, wherein the base comprises a vertical support sleeve, a support seat and Niu Jiao, the vertical support sleeve is sleeved on the second transmission sleeve, the support seat is in an L-shaped structure and sleeved on the second transmission shaft, a sleeved part which extends in the vertical direction and is hollow is formed on the support seat towards the vertical support sleeve, the vertical support sleeve is embedded in a hollow cavity of the sleeved part, the Niu Jiao is hollow and consists of a horn seat sleeved part and a horn seat hollow column which are perpendicular to each other, one end of the support seat, which is far away from the sleeved part, is arranged in the horn seat sleeved part, and the first transmission belt and the second transmission belt are both arranged in the hollow cavity of the horn seat hollow column.