CN216304152U

CN216304152U - Transmission device for controlling movement of needle frame of pattern exterior line machine

Info

Publication number: CN216304152U
Application number: CN202122821858.2U
Authority: CN
Inventors: 叶利锋; 沈利新; 王志平; 孙宏裕
Original assignee: Changshu Greatrich Machinery Co ltd
Current assignee: Changshu Greatrich Machinery Co ltd
Priority date: 2021-11-17
Filing date: 2021-11-17
Publication date: 2022-04-15
Anticipated expiration: 2031-11-17

Abstract

A transmission device for controlling the movement of a needle frame of an exterior pattern sewing machine comprises: a main drive shaft; the faceplate cam assembly comprises a faceplate cam body, a gear plate and a gear plate positioning sleeve, wherein the gear plate positioning sleeve is arranged on a machine head body of the pattern external machine; the rocker shaft assembly comprises a rocker shaft body and a swinging rocker, the swinging rocker comprises a swinging rocker connecting sleeve, a swinging rocker transmission rod and a swinging rocker output rod, and the swinging rocker output rod is provided with an adjusting long groove; the connecting rod mechanism comprises a draw bar and a swinging connecting rod; the transition swing assembly comprises a swing shaft and a needle frame swing arm; the needle frame main body is arranged at the lower part of the transition swing component and is connected with the needle frame swing arm; the needle seat is arranged on the needle frame main body and is provided with a needle. Can sew various abundant decorative pattern stitch combinations on the shoes, and is suitable for the sewing requirements of different pattern stitches.

Description

Transmission device for controlling movement of needle frame of pattern exterior line machine

Technical Field

The utility model belongs to the technical field of textile sewing mechanical equipment, and particularly relates to a transmission device for controlling the movement of a needle frame of a pattern outside machine.

Background

The figure exterior line is mainly applied to figure sewing operation of the upper and the sole of the shoe, and is particularly widely applied to the manufacturing procedures of craft shoes such as hemp sole casual shoes and the like. When a manufacturer uses the existing figure outside line sewing machine to manufacture the shoe, firstly, the upper of the shoe is shaped on the sole, then the sole and the upper are placed and abutted between a feeding roller and a pressing roller of the figure outside line sewing machine, then when the shoe is sewn, a user can operate the figure outside line sewing machine to enable a machine needle to penetrate through the lower part of the upper and further penetrate out from the side edge of the sole, thereby completing the sewing operation of a sewing line stitch, and then the user pushes the shoe to move forward by hands to repeat the sewing operation, thereby orderly finishing the figure outside line sewing of the whole shoe.

The prior Chinese patent document does not contain documents related to the structure of the pattern exterior machine, for example, the utility model patent document with the Chinese patent authorization number of CN204625968U discloses a support arm device of the pattern exterior machine, the pattern exterior machine can clamp an upper and a sole between a feeding roller and a pressing wheel on a machine head through the upward lifting of the feeding roller of the support arm, so that the intermittent feeding can be realized, and the feeding of the gap of the feeding roller is matched through the simultaneous back and forth gap motion of a needle seat and a shuttle of the pattern exterior machine, so that the pattern stitch of the sewing thread is realized. However, because the needle frame and the needle seat can not move transversely, the combination of each transmission mechanism is less, so the types of pattern stitches are less, the combination of the decorative pattern stitches is single, and the ever-increasing aesthetic requirements of people on the shoe can not be met, thereby the product competitiveness of manufacturers can not be ensured.

In view of the above, there is a need for a transmission mechanism of a needle bed of an existing figure outside line sewing machine. For this reason, the applicant has made an advantageous search for a design, in which the solution to be described below is made.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a transmission device for controlling the movement of a needle frame of a pattern outside line machine, which has a compact structure, is stable and reliable, is suitable for industrial mass production, is beneficial to realizing intermittent transverse movement of the needle frame and finishing sewing operation of pattern sewing threads by adopting a pattern cam body with a cam curve groove and a whole set of transmission assembly, is beneficial to sewing various rich decorative pattern stitch combinations on shoes and is suitable for the sewing requirements of different pattern sewing threads.

The task of the utility model is achieved by a transmission device for controlling the movement of a needle frame of an exterior pattern sewing machine, which comprises: a main drive shaft rotated by an input of external power; the disc chuck cam assembly is arranged on one side of the main transmission shaft and comprises a disc chuck cam body, a gear disc and a gear disc positioning sleeve, the gear disc positioning sleeve is arranged on a machine head body of the pattern external line machine, the gear disc is positioned and arranged on the gear disc positioning sleeve and is in transmission connection with the main transmission shaft, the disc chuck cam body is sleeved on the upper portion of the gear disc and can rotate under the driving of the gear disc, and an annular cam curve groove is formed in the surface, facing the upper side, of the disc chuck cam body; the rocking arm shaft assembly is arranged at one side of the faceplate cam assembly, which is far away from the main transmission shaft, and comprises a rocking arm shaft body and a rocking arm, the rocking arm comprises a rocking arm connecting sleeve sleeved on the rocking arm shaft body, a rocking arm transmission rod and a rocking arm output rod, the rocking arm transmission rod and the rocking arm output rod are formed on the rocking arm connecting sleeve, one end part of the rocking arm transmission rod is matched and connected with the cam curved groove, and the rocking arm output rod is provided with an adjusting elongated slot which is extended and arranged in a state of being parallel to the length direction of the rocking arm output rod; the connecting rod mechanism is arranged at one side of the rocker shaft assembly, which is far away from the faceplate cam assembly, and comprises a traction rod and a swinging connecting rod, one end part of the traction rod in the length direction is connected to an adjusting elongated slot of the swinging rocker output rod, the traction rod can change the fixed position of the traction rod on the adjusting elongated slot, and one end part of the swinging connecting rod in the length direction is rotatably connected with the other end part of the traction rod in the length direction; the transition swing assembly is arranged at one side of the connecting rod mechanism far away from the rocker shaft assembly and comprises a swing shaft and a needle frame swing arm which extend along the vertical direction, the upper end and the lower end of the swing shaft in the height direction are positioned and connected to a machine head body of the pattern outer machine, one end part of the swing connecting rod in the length direction far away from the traction rod is sleeved at a position which is on the upper side of the middle part of the swing shaft in the height direction, and the needle frame swing arm is fixedly connected to the lower end part of the swing shaft; a needle frame main body which is arranged at the lower part of the transition swing component and is connected with the needle frame swing arm; a needle seat fixedly arranged on the needle frame main body, and a needle is arranged on the needle seat.

In a specific embodiment of the utility model, a driving gear is fixedly sleeved at a position near the middle of the shaft body of the main transmission shaft in the height direction, the driving gear is meshed with a tooth part on the outer peripheral side of a gear disc of the faceplate cam assembly, and the driving gear can drive the gear disc to rotate.

In another specific embodiment of the utility model, a gear plate positioning shaft is formed at the central position of the upper side surface of the gear plate positioning sleeve, the gear plate positioning sleeve is fixedly installed on the machine head body of the pattern external machine in a screw connection mode, a gear plate convex sleeve is formed at the central position of the upper side surface of the gear plate, a gear plate convex sleeve through hole penetrating through the gear plate convex sleeve and the gear plate is formed inside the gear plate convex sleeve, the gear plate positioning shaft is arranged in the gear plate convex sleeve through hole in a penetrating mode, a pair of bearings is arranged between the gear plate convex sleeve through hole and the gear plate positioning shaft, the top end surface of the gear plate positioning shaft is flush with the top end surface of one bearing positioned at the upper part, the pair of bearings is sleeved on the shaft body of the gear plate positioning shaft, a gear plate positioning shaft threaded hole is formed at the middle position of the top end surface of the gear plate positioning shaft, and a washer and a fastener are arranged at the upper part of the top end of the gear disc positioning shaft, the washer is positioned and installed on a bearing at the upper end and the end surface of the top end of the gear disc positioning shaft, and the fastener is connected with the threaded hole of the gear disc positioning shaft after penetrating through the washer, so that the positioning and installation of the washer are realized.

In still another specific embodiment of the present invention, a faceplate cam through hole is formed at a central position of the faceplate cam body, a gear plate cam sleeve of the gear plate is inserted into the faceplate cam through hole and is in fit connection with the faceplate cam through hole, a positioning pin is formed on an upward-facing side surface of the gear plate and at a position outside a circumferential edge corresponding to the gear plate cam sleeve, a positioning hole is formed on the faceplate cam body and at a position corresponding to the positioning pin, the positioning pin is fitted in the positioning hole, thereby achieving positioning of the gear plate and the faceplate cam body, a plurality of faceplate threaded holes penetrating through a thickness direction thereof are formed on the gear plate, a faceplate cam mounting hole is formed on the faceplate cam body and at a position corresponding to the faceplate threaded holes, all set a flower disc cam mounting screw in this flower disc cam mounting hole, this flower disc cam mounting screw pass behind the flower disc cam mounting hole with the cooperation installation is realized to the toothed disc screw hole to realize the fixed mounting of flower disc cam body and toothed disc.

In another specific embodiment of the present invention, a rocker shaft body of the rocker shaft assembly extends along a vertical direction, and a rocker shaft positioning sleeve is sleeved on a top end portion of the rocker shaft body in a height direction, the rocker shaft positioning sleeve is fixedly connected with a machine head body of a pattern external machine in a fastening manner, a shaft body at the lower part of the rocker shaft body is matched and installed with the machine head body of the pattern external machine, a swing rocker connecting sleeve of the swing rocker is sleeved on the shaft body of the rocker shaft body at the upper part of the machine head body, and a fastening ring is further connected to the shaft body of the rocker shaft body and at a position corresponding to the upper part of the swing rocker connecting sleeve.

In a further specific embodiment of the present invention, a roller pin is inserted through an end of the swing rocker transmission rod that is far from the swing rocker connection sleeve in the length direction, and a roller pin fastening screw for installing and locking the roller pin is further connected to a position in the swing rocker transmission rod and near the roller pin, the roller pin protrudes downward out of the swing rocker transmission rod, and a roller is installed on a lower shaft body of the roller pin that is located outside the swing rocker transmission rod, the roller is arranged in and matched with the cam curved groove, and the roller can move in the cam curved groove, so that the swing rocker performs intermittent swing in the process that the disc cam body drives the swing rocker transmission rod to perform intermittent movement.

In a further specific embodiment of the present invention, the link mechanism further includes an adjusting pin and a link pin, and an end portion of the link mechanism, which is far away from the swing link in the length direction of the link rod, is provided with an adjusting pin locating sleeve, the adjusting pin is inserted into the adjusting pin locating sleeve, and the adjusting pin penetrates through the adjusting pin locating sleeve and then extends into an adjusting elongated slot on the output rod of the swing rocker arm and can be in sliding fit with the adjusting elongated slot, and the lower portion of the adjusting pin is provided with an adjusting pin threaded portion, and an adjusting pin nut is arranged on the adjusting pin threaded portion, and can be in threaded locking fit with the adjusting pin threaded portion and can realize fixed connection of the entire adjusting pin and the output rod of the swing rocker arm; and a draw bar pin positioning sleeve is formed on one end part of the draw bar of the link mechanism close to the swing link in the length direction, a draw bar pin connecting hole penetrating through the thickness direction is formed on one end part of the swing link, the draw bar pin penetrates through the draw bar pin positioning sleeve and then extends into the draw bar pin connecting hole, and a draw bar pin hoisting screw for installing and locking the draw bar pin is further connected in the swing link and at a position close to the shaft body of the draw bar pin.

In a more specific embodiment of the present invention, a swing shaft locking portion is formed at one end of the swing link in the length direction, which is close to the swing shaft of the transition swing assembly, a swing shaft positioning hole is formed in the swing shaft locking portion, a middle portion of the swing shaft body is inserted into the swing shaft positioning hole, a pair of locking portion clamping plates is further formed on the swing shaft locking portion, a locking portion clamping groove is formed between the two locking portion clamping plates, two threaded holes are formed in each of the pair of locking portion clamping plates, and the swing shaft locking portion realizes the relative movement of the two locking portion clamping plates by a pair of screws, so as to realize the clamping and locking of the swing shaft.

In yet another specific embodiment of the present invention, an upper end portion of the swing shaft of the transition swing assembly in the height direction is sleeved with a positioning sleeve on the swing shaft, a shaft body near the lower end portion of the swing shaft in the height direction is sleeved with a lower positioning sleeve of the swing shaft, the upper positioning sleeve and the lower positioning sleeve of the swing shaft are both fixedly mounted on the machine head body of the pattern external machine, a needle frame swing arm connecting portion is formed at a position near the swing shaft in the length direction of the needle frame swing arm, a swing shaft connecting hole is formed on the needle frame swing arm connecting portion, the lower end portion of the swing shaft is inserted into the swing shaft connecting hole, a pair of connecting portion clamping plates is further formed on the needle frame swing arm connecting portion, a connecting portion clamping groove is formed between the two connecting portion clamping plates, and two threaded holes are formed on the pair of connecting portion clamping plates, the needle frame swing arm connecting part realizes the relative movement of the two connecting part clamping plates by a pair of screws, thereby realizing the installation and connection of the needle frame swing arm and the swing shaft.

In a still more specific embodiment of the present invention, a needle frame connecting shaft extending upward along a vertical direction is formed on an upper end surface of the needle frame main body, and a needle frame connecting shaft positioning hole is formed at an end portion of the needle frame swinging arm of the transition swinging assembly close to the needle frame connecting shaft in a length direction, and the needle frame connecting shaft is fixedly inserted into the needle frame connecting shaft positioning hole, so as to realize the installation and connection of the needle frame swinging arm and the needle frame.

The technical scheme provided by the utility model has the technical effects that: firstly, a cam curved groove is formed on a cam body of the faceplate, the cam curved groove can drive a roller arranged in the cam curved groove to move in the cam curved groove, so that the intermittent swing of a swing rocker arm is realized, the action quantity of a needle frame main body in a pattern stitch period (for example, one stitch is composed of three needles or four needles) is controlled through a series of transmission, the intermittent movement of the needle frame main body is completed, and the pattern sewing operation on the side edge of a craft shoe such as a linen-bottom shoe is realized; secondly, an adjusting elongated slot is arranged on an output rod of the swinging rocker arm, and the adjustment control of the movement amount of the needle frame main body, namely the adjustment of the size of the needle size, is finally realized by adjusting the connecting position of the traction rod in the adjusting elongated slot, so that the sewing machine is suitable for the sewing requirements of different pattern stitches; thirdly, the driving gear and the gear disc are in meshed transmission, a user changes the driving gear arranged on the shaft body of the main transmission shaft to realize the change of the transmission ratio of the driving gear and the gear disc, so that various intermittent actions of the needle frame main body are realized through a series of transmissions, sewing operations of more stitches are completed by matching with the actions of other mechanisms, the application range is further widened, different sewing requirements are met, and more abundant decorative pattern stitch combinations can be sewn on the shoe; finally, the needle holder is compact in overall structure, stable and reliable, firm in connection, not prone to needle leakage, suitable for industrial large-scale production and application, and capable of achieving overall movement of the needle holder.

Drawings

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

Fig. 2 is a plan sectional view of the embodiment shown in fig. 1.

FIG. 3 is an illustration of an application of an embodiment of the present invention.

In the figure: 1. a main transmission shaft, 11. a driving gear; 2. the gear disc cam assembly comprises a disc chuck cam assembly, 21, a disc chuck cam body, 211, a cam curve groove, 212, a disc chuck cam through hole, 213, a positioning hole, 214, a disc chuck cam mounting hole, 2141, a disc chuck cam mounting screw, 22, a gear disc, 221, a gear disc convex fit, 2211, a gear disc convex fit through hole, 222, a bearing, 223, a positioning pin, 224, a gear disc threaded hole, 23, a gear disc positioning sleeve, 231, a gear disc positioning shaft, 2311, a gear disc positioning shaft threaded hole, 2312, a washer, 2313 and a fastener; 3. the rocker arm assembly comprises a rocker arm shaft assembly 31, a rocker arm shaft body 311, a rocker arm shaft positioning sleeve 312, a tight ring 312, a swing rocker arm 32, a swing rocker arm 321, a swing rocker arm connecting sleeve 322, a swing rocker arm transmission rod 322, a 3221 roller pin, a 3222 roller pin fastening screw, a 3223 roller, 323 a swing rocker arm output rod 3231 and an adjusting long groove; 4. the device comprises a connecting rod mechanism, 41, a traction rod, 411, an adjusting pin positioning sleeve, 412, a traction rod pin positioning sleeve, 42, a swinging connecting rod, 421, a traction rod pin connecting hole, 422, a traction rod pin hoisting screw, 423, a swinging shaft locking part, 4231, a swinging shaft positioning hole, 4232, a locking part clamping plate, 4233, a locking part clamping groove, 43, an adjusting pin, 431, an adjusting pin threaded part, 432, an adjusting pin nut and 44, a traction rod pin; 5. the needle frame comprises a transition swing assembly, 51 swing shafts, 511 swing shaft upper positioning sleeves, 512 swing shaft lower positioning sleeves, 52 needle frame swing arms, 521 needle frame swing arm connecting parts, 5211 swing shaft connecting holes, 5212 connecting part clamping plates, 5213 connecting part clamping grooves and 522 needle frame connecting shaft positioning holes; 6. the needle frame body and 61 are connected with the needle frame connecting shaft; 7. a needle seat; 8. a needle; 10. a machine head body; 20. upper, 30, sole; 40. pattern stitches.

Detailed Description

In order to clearly understand the technical spirit and the advantages of the present invention, the following detailed description is given by way of examples, but the description of the examples is not intended to limit the scope of the present invention, and any equivalent changes made according to the present inventive concept, which are merely in form and not in substance, should be considered as the scope of the present invention.

In the following description, any concept related to the directions or orientations of up, down, left, right, front and rear is based on the position state of fig. 1, and thus it should not be understood as a specific limitation to the technical solution provided by the present invention.

Referring to fig. 1 to 2, there is shown a transmission device for controlling the movement of a needle frame of a figure outside machine, comprising a main transmission shaft 1, the main transmission shaft 1 being rotated by the input of external power; the disc chuck cam assembly 2 is arranged on one side of the main transmission shaft 1 and comprises a disc chuck cam body 21, a gear disc 22 and a gear disc positioning sleeve 23, the gear disc positioning sleeve 23 is arranged on the machine head body 10 of the pattern external machine, the gear disc 22 is positioned and arranged on the gear disc positioning sleeve 23 and is in transmission connection with the main transmission shaft 1, the disc chuck cam body 21 is sleeved on the upper part of the gear disc 22 and can rotate under the driving of the gear disc 22, and a circular cam curve groove 211 is formed on the surface of the disc chuck cam body 21, which faces the upper side; the rocker arm shaft assembly 3 is arranged at one side position of the faceplate cam assembly 2, which is far away from the main transmission shaft 1, the rocker arm shaft assembly 3 comprises a rocker arm shaft body 31 and a swinging rocker arm 32, the swinging rocker arm 32 comprises a swinging rocker arm connecting sleeve 321 sleeved on the rocker arm shaft body 31, a swinging rocker arm transmission rod 322 and a swinging rocker arm output rod 323, the swinging rocker arm transmission rod 322 is formed on the swinging rocker arm connecting sleeve 321, one end part of the swinging rocker arm transmission rod 322 is matched and connected with the cam curved groove 211, and the swinging rocker arm output rod 323 is formed with an adjusting elongated groove 3231 which is extended and arranged in a state of being parallel to the length direction of the swinging rocker arm output rod 323; the link mechanism 4 is arranged at a position of the rocker shaft assembly 3 far away from the faceplate cam assembly 2, the link mechanism 4 comprises a traction rod 41 and a swinging link 42, one end part of the traction rod 41 in the length direction is connected to the adjusting elongated slot 3231 of the swinging rocker output rod 323, the traction rod 41 can change the fixed position on the adjusting elongated slot 3231, and one end part of the swinging link 42 in the length direction is rotatably connected with the other end part of the traction rod 41 in the length direction; the transition swing assembly 5 is arranged at one side position of the connecting rod mechanism 4 far away from the rocker shaft assembly 3, the transition swing assembly 5 comprises a swing shaft 51 and a needle frame swing arm 52, the swing shaft 51 and the needle frame swing arm 52 are arranged in an extending mode along the vertical direction, the upper end and the lower end of the swing shaft 51 in the height direction are positioned and connected to the machine head body 10 of the pattern external line machine, one end part of the swing connecting rod 42 in the length direction far away from the pull rod 41 is sleeved at a position which is higher than the middle part of the shaft body in the height direction of the swing shaft 51, and the needle frame swing arm 52 is fixedly connected to the lower end part of the swing shaft 51; a needle frame main body 6 which is arranged at the lower part of the transition swing component 5 and is connected with the needle frame swing arm 52; a needle seat 7 fixedly arranged on the needle frame main body 6, and a needle 8 is arranged on the needle seat 7.

In this embodiment, a driving gear 11 is fixedly sleeved at a position near the middle of the shaft body of the main transmission shaft 1 in the height direction, the driving gear 11 is meshed with a tooth part on the outer peripheral side of a gear disc 22 of the faceplate cam assembly 2, and the driving gear 11 can drive the gear disc 22 to rotate, and by replacing the driving gear 11 mounted on the shaft body of the main transmission shaft 1, a user can change the transmission ratio of the driving gear 11 and the gear disc 2, for example (1: 3 or 1: 2), so that various types of intermittent motions of the needle frame main body 6 and the needle base 7 are realized through a series of transmissions, and various types of decorative pattern stitch combinations are sewn on the shoe.

Further, a gear plate positioning shaft 231 is formed at the central position of the upper side surface of the gear plate positioning sleeve 23, the gear plate positioning sleeve 23 is fixedly mounted on the machine head body 10 of the pattern exterior line machine in a screw connection manner, a gear plate convex sleeve 221 is formed at the central position of the upper side surface of the gear plate 22, a gear plate convex sleeve through hole 2211 penetrating through the gear plate convex sleeve 221 and the gear plate 22 is formed inside the gear plate convex sleeve 221, the gear plate positioning shaft 231 is arranged in the gear plate convex sleeve through hole 2211 in a penetrating manner, a pair of bearings 222 is arranged between the gear plate convex sleeve through hole 2211 and the gear plate positioning shaft 231, the top end surface of the gear plate positioning shaft 231 is flush with the top end surface of one bearing 222 positioned at the upper part, and the pair of bearings 222 is sleeved on the shaft body of the gear plate positioning shaft 231, a gear plate positioning shaft threaded hole 2311 is formed in the middle of the top end face of the gear plate positioning shaft 231, a washer 2312 and a fastener 2313 are arranged on the top end of the gear plate positioning shaft 231, the washer 2312 is positioned and installed on a bearing 222 at the upper end and the top end face of the gear plate positioning shaft 231, and the fastener 2313 is connected with the gear plate positioning shaft threaded hole 2311 after penetrating through the washer 2312 and realizes the positioning and installation of the washer 2312.

Further, a faceplate cam through hole 212 is formed at a central position of the faceplate cam body 21, a gear plate cam sleeve 221 of the gear plate 22 is inserted into the faceplate cam through hole 212 and is in fit connection with the faceplate cam through hole 212, a positioning pin 223 is formed on an upward-facing side surface of the gear plate 22 and at an outer side position corresponding to a circumferential edge of the gear plate cam sleeve 221, a positioning hole 213 is formed on the faceplate cam body 21 and at a position corresponding to the positioning pin 223, the positioning pin 223 is fit-mounted in the positioning hole 213 to achieve positioning of the gear plate 22 and the faceplate cam body 21, a plurality of gear plate screw holes 224 are formed on the gear plate 22 in a thickness direction thereof, a faceplate cam mounting hole 214 is formed on the faceplate cam body 21 and at a position corresponding to the gear plate screw holes 224, a faceplate cam mounting screw 2141 is disposed in each faceplate cam mounting hole 214, and the faceplate cam mounting screw 2141 is inserted into the faceplate cam mounting hole 214 and then is mounted in cooperation with the gear plate threaded hole 224, so that the faceplate cam body 21 and the gear plate 22 are fixedly mounted.

In this embodiment, the rocker shaft body 31 of the rocker shaft assembly 3 extends along the vertical direction, and the top end of the rocker shaft body 31 in the height direction is sleeved with a rocker shaft positioning sleeve 311, the rocker shaft positioning sleeve 311 is fixedly connected with the machine head body 10 of the pattern external machine in a fastening manner, the lower shaft body of the rocker shaft body 31 is matched and installed with the machine head body 10 of the pattern external machine, the swing rocker arm connecting sleeve 321 of the swing rocker arm 32 is sleeved on the shaft body of the rocker shaft body 31 at the upper part of the machine head body 10, and the shaft body of the rocker shaft body 31 and the position corresponding to the upper part of the swing rocker arm connecting sleeve 321 are further connected with a fastening ring 312.

Further, a roller pin 3221 is disposed through an end portion of the rocking arm transmission rod 322 in the length direction away from the rocking arm connection sleeve 321, and a roller pin fastening screw 3222 for mounting and locking the roller pin 3221 is further connected to a position inside the rocking arm transmission rod 322 and close to the roller pin 3221, the roller pin 3221 protrudes downward out of the rocking arm transmission rod 322, and a roller 3223 is mounted on a lower shaft body of the roller pin 3221 located outside the rocking arm transmission rod 322, the roller 3223 is disposed inside the cam curved groove 211 and is engaged therewith, and the roller 3223 can move inside the cam curved groove 211, so that the rocking arm 32 intermittently swings when the faceplate cam body 21 drives the rocking arm transmission rod 322 to intermittently move.

With continued reference to fig. 1 and fig. 2, the link mechanism 4 further includes an adjusting pin 43 and a link pin 44, an adjusting pin locating sleeve 411 is formed on an end portion of the tie rod 41 of the link mechanism 4, which is away from the swing link 42 in the length direction, the adjusting pin 43 is inserted into the adjusting pin locating sleeve 411, the adjusting pin 43 penetrates through the adjusting pin locating sleeve 411 and then extends into the adjusting elongated slot 3231 of the swing rocker output rod 323 and can be in sliding fit with the adjusting elongated slot 3231, an adjusting pin thread portion 431 is formed on a lower portion of the adjusting pin 43, an adjusting pin nut 432 is disposed on the adjusting pin thread portion 431, and the adjusting pin nut 432 can be in threaded locking fit with the adjusting pin thread portion 431 and can realize fixed connection of the adjusting pin 43 integrally with the swing rocker output rod 323; a drawbar pin locating sleeve 412 is formed at one end part of the length direction of the drawbar 41 of the link mechanism 4 close to the swing link 42, a drawbar pin connecting hole 421 penetrating through the thickness direction of the swing link 42 is formed at one end part of the swing link 42, the drawbar pin 44 penetrates through the drawbar pin locating sleeve 412 and then is inserted into the drawbar pin connecting hole 421, and a drawbar pin fastening screw 422 for mounting and locking the drawbar pin 44 is connected to the position close to the shaft body of the drawbar pin 44 in the swing link 42.

In the present embodiment, a swing shaft locking portion 423 is formed at one end of the swing link 42 in the length direction close to the swing shaft 51 of the transition swing assembly 5, a swing shaft positioning hole 4231 is formed in the swing shaft locking portion 423, a middle portion of the shaft body of the swing shaft 51 is inserted into the swing shaft positioning hole 4231, a pair of locking portion clamping plates 4232 is further formed on the swing shaft locking portion 423, a locking portion clamping groove 4233 is formed between the two locking portion clamping plates 4232, two threaded holes are formed in each of the pair of locking portion clamping plates 4232, and the swing shaft locking portion 423 realizes relative movement of the two locking portion clamping plates 4232 by a pair of screws, thereby realizing clamping and locking of the swing shaft 51.

Preferably, an upper positioning sleeve 511 of the swing shaft 51 of the transition swing assembly 5 is sleeved on the upper end portion in the height direction, a lower positioning sleeve 512 of the swing shaft is sleeved on the shaft body near the lower end portion in the height direction of the swing shaft 51, the upper positioning sleeve 511 and the lower positioning sleeve 512 of the swing shaft are both fixedly mounted on the machine head body 10 of the pattern sewing machine, a needle frame swing arm connecting portion 521 is formed at a position close to the swing shaft 51 in the length direction of the needle frame swing arm 52, a swing shaft connecting hole 5211 is formed on the needle frame swing arm connecting portion 521, the lower end portion of the swing shaft 51 is inserted into the swing shaft connecting hole 5211, a pair of connecting portion clamping plates 5212 is further formed on the needle frame swing arm connecting portion 521, a connecting portion clamping groove 5213 is formed between the two connecting portion clamping plates 5212, and two threaded holes are formed on the pair of connecting portion clamping plates 5212, the needle holder swing arm connecting portion 521 realizes relative movement of the two connecting portion clamping plates 5212 by a pair of screws, thereby realizing mounting connection of the needle holder swing arm 52 and the swing shaft 51.

Furthermore, a needle frame connecting shaft 61 extending upward along the vertical direction is formed on the upper end face of the needle frame main body 6, a needle frame connecting shaft positioning hole 522 is formed at one end part of the needle frame swinging arm 52 of the transition swinging assembly 5 close to the needle frame connecting shaft 61 in the length direction, and the needle frame connecting shaft 61 is fixedly arranged in the needle frame connecting shaft positioning hole 522 in a penetrating manner, so that the needle frame swinging arm 52 is installed and connected with the needle frame main body 6.

Referring to fig. 1 and fig. 2 in combination with fig. 3, the applicant briefly describes the working principle of the present invention: when the corresponding pattern sewing operation is required to be performed on the side edges of the craft shoes such as the hemp-sole shoes, the upper 20 and the sole 30 of the hemp-sole shoes are firstly placed between the feeding roller and the pressing wheel of the pattern sewing machine and just positioned below the needle seat 7, at the moment, the pattern sewing machine is operated, the power is transmitted to the main transmission shaft 1, the main transmission shaft 1 drives the gear disc 22 of the disc cam assembly 2 to rotate, the brake gear 11 drives the gear disc 22 to rotate according to the set transmission ratio (1: 3 or 1: 2), the gear disc 22 drives the disc cam body 21 to rotate, the disc cam body 21 drives the roller pin 3221 and the swing rocker arm transmission rod 322 to perform intermittent motion through the cam curve groove 211 in the rotating process, so that the intermittent swing of the swing rocker arm 32 is realized, and the swing arm 32 further drives the pull rod 41 and the swing connecting rod 42 of the connecting rod mechanism 4 to perform intermittent motion through the swing arm output rod 323, And the transmission of the swing shaft 51 of the transition swing component 5 and the needle frame swing arm 52, so that the needle frame body 6 drives the needle seat 7 to do intermittent transverse reciprocating movement, and drags the shoe sole 20 and the shoe sole 30 to complete feeding movement of a stitch distance together, the machine needle 8 can puncture the shoe sole 20 and the shoe sole 30 and can complete knotting with the shuttle, and the machine needle 8 can sometimes make the shoe sole 20 and the shoe sole 30 penetrate without realizing feeding and sometimes feeding in a pattern stitch sewing period due to the setting of the transmission ratio of the driving gear 11 and the gear disc 22 and the change of the curve track of the cam curve groove 211 of the cam curve groove 21, and simultaneously cooperates with the forward and backward movement of the shuttle seat in the process, so that the sewing work of a pattern stitch 40 (shown in fig. 3) on the shoe is completed.

In conclusion, the technical scheme provided by the utility model overcomes the defects in the prior art, successfully completes the utility model task and truly realizes the technical effects of the applicant in the technical effect column.

Claims

1. A transmission device for controlling the movement of a needle frame of an exterior pattern sewing machine is characterized by comprising: a main drive shaft (1), the main drive shaft (1) rotates by the input of external power; the pattern disc cam assembly (2) is arranged on one side of the main transmission shaft (1) and comprises a pattern disc cam body (21), a gear disc (22) and a gear disc positioning sleeve (23), the gear disc positioning sleeve (23) is installed on a machine head body (10) of the pattern outer line machine, the gear disc (22) is positioned and installed on the gear disc positioning sleeve (23) and is in transmission connection with the main transmission shaft (1), the pattern disc cam body (21) is sleeved on the upper portion of the gear disc (22) and can rotate under the driving of the gear disc (22), and a cam curve groove (211) in an annular shape is formed in the surface of the pattern disc cam body (21) on the side facing upwards; the rocking arm shaft assembly (3) is arranged at one side position of the faceplate cam assembly (2) far away from the main transmission shaft (1), the rocking arm shaft assembly (3) comprises a rocking arm shaft body (31) and a rocking arm (32), the rocking arm (32) comprises a rocking arm connecting sleeve (321) sleeved on the rocking arm shaft body (31), a rocking arm transmission rod (322) and a rocking arm output rod (323) which are formed on the rocking arm connecting sleeve (321), one end part of the rocking arm transmission rod (322) is matched and connected with the cam curved groove (211), and an adjusting long groove (3231) which is arranged in parallel with the length direction of the rocking arm output rod (323) in an extending mode is formed on the rocking arm output rod (323); the connecting rod mechanism (4) is arranged at one side position of the rocker shaft assembly (3) far away from the faceplate cam assembly (2), the connecting rod mechanism (4) comprises a traction rod (41) and a swinging connecting rod (42), one end part of the traction rod (41) in the length direction is connected to an adjusting elongated slot (3231) of the swinging rocker output rod (323), the traction rod (41) can change the fixed position of the traction rod on the adjusting elongated slot (3231), and one end part of the swinging connecting rod (42) in the length direction is rotatably connected with the other end part of the traction rod (41) in the length direction; the transition swing assembly (5) is arranged at one side position of the connecting rod mechanism (4) far away from the rocker shaft assembly (3), the transition swing assembly (5) comprises a swing shaft (51) and a needle frame swing arm (52), the swing shaft (51) extends along the vertical direction, the upper end and the lower end of the swing shaft (51) in the height direction are positioned and connected to a machine head body (10) of the pattern sewing machine, one end part of the swing connecting rod (42) in the length direction far away from the pull rod (41) is sleeved at a position which is on the upper side of the middle part of the shaft body of the swing shaft (51) in the height direction, and the needle frame swing arm (52) is fixedly connected to the lower end part of the swing shaft (51); a needle frame main body (6) which is arranged at the lower part of the transition swing component (5) and is connected with the needle frame swing arm (52); a needle seat (7) fixedly arranged on the needle frame main body (6), and a machine needle (8) is arranged on the needle seat (7).

2. The transmission device for controlling the movement of the needle frame of the figure outside machine according to the claim 1 is characterized in that a driving gear (11) is fixedly sleeved at the position near the middle of the height direction of the shaft body of the main transmission shaft (1), the driving gear (11) is meshed with the tooth part at the outer peripheral side of the gear disc (22) of the faceplate cam assembly (2), and the driving gear (11) can drive the gear disc (22) to rotate.

3. The transmission device for controlling the movement of the needle frame of the pattern exterior line machine according to the claim 1 is characterized in that a gear plate positioning shaft (231) is formed at the center position of the upward side surface of the gear plate positioning sleeve (23), the gear plate positioning sleeve (23) is fixedly installed on the machine head body (10) of the pattern exterior line machine by means of screw connection, a gear plate convex sleeve (221) is formed at the center position of the upward side surface of the gear plate (22), a gear plate convex sleeve through hole (2211) penetrating through the gear plate and the gear plate (22) is formed inside the gear plate convex sleeve (221), the gear plate positioning shaft (231) penetrates through the gear plate convex sleeve through hole (2211), and a pair of bearings (222) is arranged between the gear plate convex sleeve through hole (2211) and the gear plate positioning shaft (231), the end face of the top end of the gear disc positioning shaft (231) is flush with the end face of the top end of the bearing (222) positioned at the upper part, the pair of bearings (222) is sleeved on the shaft body of the gear disc positioning shaft (231), a gear disc positioning shaft threaded hole (2311) is formed in the middle of the end face of the top end of the gear disc positioning shaft (231), a gasket (2312) and a fastener (2313) are arranged at the upper part of the top end of the gear disc positioning shaft (231), the gasket (2312) is positioned and installed on the end faces of the top ends of the bearing (222) and the gear disc positioning shaft (231) positioned at the upper end, and the fastener (2313) is connected with the gear disc positioning shaft threaded hole (2311) after penetrating through the gasket (2312) and realizes the positioning and installation of the gasket (2312).

4. The transmission device for controlling the movement of the needle frame of the figure outside machine according to the claim 3 is characterized in that a figure disc cam through hole (212) is formed at the center position of the figure disc cam body (21), the gear disc convex sleeve (221) of the gear disc (22) is arranged in the figure disc cam through hole (212) in a penetrating way and is in matching connection with the figure disc cam through hole (212), a positioning pin (223) is formed on the upper side surface of the gear disc (22) and at the outer side position corresponding to the circumferential edge of the gear disc convex sleeve (221), a positioning hole (213) is formed on the figure disc cam body (21) and at the position corresponding to the positioning pin (223), the positioning pin (223) is in matching installation in the positioning hole (213), thereby realizing the positioning of the gear disc (22) and the figure disc cam body (21), and a plurality of gear disc threaded holes (224) penetrating through the gear disc (22) in the thickness direction are formed in the gear disc (22), a disc chuck cam mounting hole (214) is formed in each disc chuck cam body (21) and at a position corresponding to the gear disc threaded hole (224), a disc chuck cam mounting screw (2141) is arranged in each disc chuck cam mounting hole (214), and the disc chuck cam mounting screws (2141) are installed in a matched manner with the gear disc threaded holes (224) after penetrating through the disc chuck cam mounting holes (214), so that the disc chuck cam bodies (21) and the gear disc (22) are fixedly installed.

5. The transmission device for controlling the movement of a needle frame of an exterior figure sewing machine according to claim 1, it is characterized in that a rocker shaft body (31) of the rocker shaft assembly (3) extends along the vertical direction, and a rocker shaft positioning sleeve (311) is sleeved on the top end part of the rocker shaft body (31) in the height direction, the rocker shaft positioning sleeve (311) is fixedly connected with a machine head body (10) of the pattern outer line machine in a fastener connection mode, the lower shaft body of the rocker shaft body (31) is matched and installed with the machine head body (10) of the pattern outer line machine, a swinging rocker arm connecting sleeve (321) of the swinging rocker arm (32) is sleeved on a shaft body of the rocker shaft body (31) which is positioned at the upper part of the machine head body (10), and a fastening ring (312) is connected to the shaft body of the rocker shaft body (31) at a position corresponding to the upper part of the swinging rocker connecting sleeve (321).

6. The transmission device for controlling the needle frame movement of figure outside machine according to claim 5, characterized in that a roller pin (3221) is inserted into the end of the swing rocker arm transmission rod (322) far away from the swing rocker arm connection sleeve (321) in the length direction, a roller pin fastening screw (3222) for fixing and locking the roller pin (3221) is connected to the swing rocker arm transmission rod (322) and near to the roller pin (3221), the roller pin (3221) protrudes downwards from the swing rocker arm transmission rod (322), a roller (3223) is installed on the lower shaft body of the roller pin (3221) outside the swing rocker arm transmission rod (322), the roller (3223) is arranged in the cam curved groove (211) and is matched with the cam curved groove, and the roller (3223) can move in the cam curved groove (211), therefore, the swinging rocker arm (32) intermittently swings in the process that the disc chuck cam body (21) drives the swinging rocker arm transmission rod (322) to intermittently move.

7. The transmission device for controlling the movement of the needle frame of the figure exterior machine according to the claim 1, characterized in that the link mechanism (4) further comprises an adjusting pin (43) and a pull rod pin (44), and an adjusting pin locating sleeve (411) is formed on one end of the pull rod (41) of the link mechanism (4) far away from the swing link (42) in the length direction, the adjusting pin (43) is arranged in the adjusting pin locating sleeve (411) in a penetrating way, the adjusting pin (43) penetrates through the adjusting pin locating sleeve (411) and then extends into an adjusting long groove (3231) on the swing rocker output rod (323) and can be in sliding fit with the adjusting long groove (3231), an adjusting pin thread part (431) is formed on the lower part of the adjusting pin (43), an adjusting pin nut (432) is arranged on the adjusting pin thread part (431), and the adjusting pin nut (432) can be in locking fit with the adjusting pin thread part (431) and realize the adjusting pin thread locking fit (43) The whole is fixedly connected with the output rod (323) of the swing rocker arm; and a drawbar pin locating sleeve (412) is formed on one end part of the drawbar (41) of the link mechanism (4) close to the swinging link (42) in the length direction, a drawbar pin connecting hole (421) penetrating through the thickness direction of the swinging link (42) is formed on one end part of the swinging link (42), the drawbar pin (44) penetrates through the drawbar pin locating sleeve (412) and then extends into the drawbar pin connecting hole (421), and a drawbar pin fastening screw (422) for installing and locking the drawbar pin (44) is further connected inside the swinging link (42) and at the position close to the shaft body of the drawbar pin (44).

8. The transmission device for controlling the movement of the needle frame of the figure outside machine according to claim 1, characterized in that a swing shaft locking part (423) is formed at one end of the swing link (42) close to the swing shaft (51) of the transition swing component (5) in the length direction, a swing shaft positioning hole (4231) is formed on the swing shaft locking part (423), the middle part of the shaft body of the swing shaft (51) is inserted into the swing shaft positioning hole (4231), a pair of locking part clamping plates (4232) is further formed on the swing shaft locking part (423), a locking part clamping groove (4233) is formed between the two locking part clamping plates (4232), two threaded holes are formed on the pair of locking part clamping plates (4232), the swing shaft locking part (423) realizes the relative movement of the two locking part clamping plates (4232) by means of a pair of screws, thereby realizing clamping locking of the swing shaft (51).

9. The transmission device for controlling the movement of the needle frame of the pattern external machine according to claim 1, wherein an upper end of the swing shaft (51) of the transition swing component (5) in the height direction is sleeved with a lower positioning sleeve (511) of the swing shaft, a lower positioning sleeve (512) of the swing shaft is sleeved on the shaft body near the lower end of the swing shaft (51) in the height direction, the upper positioning sleeve (511) and the lower positioning sleeve (512) of the swing shaft are both fixedly mounted on the machine head body (10) of the pattern external machine, a needle frame swing arm connecting part (521) is formed at the position close to the swing shaft (51) in the length direction of the needle frame swing arm (52), a swing shaft connecting hole (5211) is formed on the needle frame swing arm connecting part (521), the lower end of the swing shaft (51) is inserted into the swing shaft connecting hole (5211), and a pair of connecting part clamping plates (5212) are further formed on the needle frame swinging arm connecting part (521), a connecting part clamping groove (5213) is formed between the two connecting part clamping plates (5212), two threaded holes are formed in the pair of connecting part clamping plates (5212), and the needle frame swinging arm connecting part (521) realizes the relative movement of the two connecting part clamping plates (5212) through a pair of screws, so that the needle frame swinging arm (52) and the swinging shaft (51) are installed and connected.

10. The transmission device for controlling the needle frame movement of a figure exterior line machine according to claim 1, characterized in that a needle frame connecting shaft (61) extending upward along the vertical direction is formed on the upper end face of the needle frame main body (6), a needle frame connecting shaft positioning hole (522) is formed at one end part of the needle frame swinging arm (52) of the transition swinging assembly (5) close to the needle frame connecting shaft (61) in the length direction, and the needle frame connecting shaft (61) is fixedly arranged in the needle frame connecting shaft positioning hole (522) so as to realize the installation and connection of the needle frame swinging arm (52) and the needle frame main body (6).