Supporting arm device of horizontal box packaging machine

Abstract

A supporting arm device of a horizontal box packaging machine comprises a supporting arm sleeve body. The turning type support arm assembly comprises a support arm body and a support arm connecting seat; the transmission base is arranged at the end part of the rear end of the supporting arm sleeve body; the eccentric wheel transmission assembly is in transmission connection with the transmission base; the feeding shaft assembly comprises a front feeding shaft and a rear feeding shaft, and the rear feeding shaft is connected with the eccentric wheel transmission assembly; the swinging transmission shaft assembly comprises a front swinging transmission shaft and a rear swinging transmission shaft; the power transmission assembly is arranged in the support arm connecting seat and is in transmission connection with the feeding shaft assembly; the shuttle hook unit is in transmission connection with the power transmission assembly; and the swinging feeding unit is in transmission connection with the swinging transmission shaft assembly and can swing back and forth under the driving of the swinging transmission shaft assembly. The structure is characterized in that the side edge of the case body can be horizontally attached to the support arm body by arranging the turning type support arm assembly and optimizing the design of the composite transmission system, high precision and stability of case sewing are achieved, and uniformity and efficiency of zipper sewing are remarkably improved.

Description

Technical Field

[0001] This utility model belongs to the technical field of sewing machine machinery and equipment, specifically relating to a horizontal bag support arm device. Background Technology

[0002] Bag sewing machines are among the most commonly used sewing machines in bag making. Also known as industrial flatbed sewing machines, they are used to sew the fabric, lining, and various other details of bags, offering high speed, even stitching, and easy tension control. In the bag sewing machine field, horizontal bag sewing machines are widely used due to their straight-arm support structure. This type of sewing equipment typically relies on the cooperation of the straight-arm support and the sewing table to complete the sewing of the bag and zipper. However, this straight-arm design has a significant drawback: when sewing a zipper around the side of a rolling suitcase, the bag must be placed on the straight arm, causing the side to be sewn to not be kept horizontal. This limitation makes it difficult for the operator to accurately align the fabric, making it unsuitable for sewing rolling suitcase zippers. Furthermore, it requires additional manual support to prevent the bag from slipping, increasing labor intensity and affecting sewing efficiency. Existing technologies attempt to alleviate the above problems by improving the support structure. For example, patent application CN202410690446.5 discloses an automatic sewing device for bag production. This device uses an adjustable support tube structure to provide auxiliary support force to the adjustable support tube driven by a torsion spring. However, it does not change the fundamental limitation of the straight-arm structure and cannot solve the problem of horizontal placement of the bag's side. Another example is the use of a high-platform support arm mechanism on sewing machines. While using a "U"-shaped support arm with synchronous belt drive can improve the sewing efficiency of tubular fabrics, its design is intended for small-sized fabrics such as cuffs and trouser legs, and is not suitable for the horizontal positioning requirements of large bags. Some manufacturers have also made reasonable improvements to the overall structure of the sewing machine support arm, enhancing its stability and achieving a rigid connection through a multi-layer beam frame structure. However, this is still based on a straight-arm design and cannot adapt to the horizontal sewing requirements of the bag's side.

[0003] In view of the above, the core problem with existing technologies is that the straight-arm support arm of a horizontal bag sewing machine cannot be horizontally positioned when sewing the sides of the bag, requiring manual adjustment and support, which limits the degree of automation and sewing quality. Therefore, there is an urgent need for an innovative support arm structure that can achieve natural horizontal placement of bags and reduce manual intervention. To this end, the applicant has made a beneficial design, and the technical solution described below arose in this context. Summary of the Invention

[0004] The objective of this invention is to provide a horizontal bag sewing machine support arm device. By optimizing the overall structure, setting up a curved support arm assembly, and adapting to the design of a composite transmission system, the side of the bag can be horizontally attached to the support arm body to achieve horizontal positioning, significantly improving the work efficiency of bag sewing, achieving high precision and stability in bag sewing, reducing labor intensity, and adapting to the needs of batch sewing of large-size bags.

[0005] The present invention achieves its objective as follows: a horizontal bag-making machine support arm device, comprising: a support arm sleeve, which is horizontally arranged and has an inner cavity extending through its length; and a turning support arm assembly, which includes a horizontally arranged support arm body and a vertically arranged support arm connecting seat. The support arm connecting seat is disposed at the front end of the support arm sleeve along its length, and is hollow inside, forming a hollow cavity that communicates with the inner cavity of the support arm sleeve. The support arm body is fixedly connected to the support arm sleeve. The support arm connecting seat is located at its bottom position; a transmission base is disposed at the rear end of the support arm sleeve along its length; an eccentric wheel transmission assembly is capable of reciprocating under the drive of the machine head, and the eccentric wheel transmission assembly is connected to the transmission base; a feeding shaft assembly passes through the support arm body and includes a front feeding shaft and a rear feeding shaft connected together, the rear end of the rear feeding shaft passes through the transmission base and is connected to the eccentric wheel transmission assembly, and the front end of the front feeding shaft protrudes outwards. The support arm body extends into the cavity of the support arm connecting seat; the swing transmission shaft assembly also passes through the support arm body and includes a front swing transmission shaft and a rear swing transmission shaft connected front to back. The rear swing transmission shaft can swing back and forth under the drive of the transmission base, while the front end of the front swing transmission shaft extends into the support arm connecting seat; the power transmission assembly is disposed in the cavity of the support arm connecting seat and is connected to the feeding shaft assembly; the shuttle unit uses water The shuttle unit is installed in a flat state within the support arm body and extends into the cavity of the support arm connecting seat to achieve a transmission connection with the power transmission assembly. The shuttle unit also includes a shuttle body, a shuttle support shaft, a shuttle core, and a shuttle seat located at the front of the support arm body. The shuttle body and the shuttle support shaft are connected in a transmission connection and can reciprocate under the drive of the power transmission assembly. The oscillating feeding unit is disposed within the support arm body and the support arm connecting seat, and is connected in a transmission connection with the oscillating transmission shaft assembly and can reciprocate under its drive.

[0006] In a specific embodiment of this utility model, the support arm body is hollow inside and forms an inner cavity of the support arm body that extends from its front end to its rear end. A needle plate is provided at the upper part of the front section of the support arm body. The needle plate has a relief groove corresponding to the upper bag machine needle. The shuttle body of the shuttle unit and the front component of the swing feeding unit are located below the relief groove.

[0007] In another specific embodiment of this utility model, a support arm sleeve mating seat is formed at the center of the front end of the support arm sleeve, and a mating hole is correspondingly formed on the upper part of the support arm connecting seat. The support arm sleeve mating seat is fitted into the mating hole of the support arm connecting seat, thereby realizing the mating connection between the support arm sleeve and the support arm connecting seat; and a support arm sleeve internal bracket is also fixedly installed at the middle of the inner cavity of the support arm sleeve, which is used for the support arm sleeve... The front feeding shaft and the rear feeding shaft, as well as the front swing transmission shaft and the rear swing transmission shaft, are positioned together. A protruding part of the arm connecting seat is formed at the lower front side of the arm connecting seat, and an arm body mating seat is formed at the center of the rear end of the arm body. A corresponding lower mating hole of the arm connecting seat is opened at the center of the protruding part of the arm connecting seat. The arm body mating seat is installed in the lower mating hole of the arm connecting seat, thereby realizing the positioning connection between the arm body and the arm connecting seat.

[0008] In another specific embodiment of this utility model, the eccentric wheel transmission assembly includes an eccentric wheel connecting rod, a driving eccentric wheel, a driven gear, a synchronous connecting rod, and a synchronous rocker arm. The eccentric wheel connecting rod is connected to the machine head and can reciprocate under the drive of the machine head. The bottom end of the eccentric wheel connecting rod is eccentrically connected to the driving eccentric wheel. An eccentric wheel connecting rod pin is disposed at the bottom of the eccentric wheel connecting rod, passing through the driving eccentric wheel and achieving a transmission connection between the eccentric wheel connecting rod and the driving eccentric wheel through a pin nut. A driving eccentric wheel gear portion is formed on the circumferential surface of the driving eccentric wheel, and a driving eccentric wheel through hole is formed at the center of the driving eccentric wheel. A driving eccentric wheel bushing is disposed inside the driving eccentric wheel, and a gear pin is fitted inside the driving eccentric wheel bushing. The length of the gear pin is... One end of the drive eccentric wheel is mounted on the transmission base to achieve a transmission connection between the drive eccentric wheel and the transmission base. The driven gear includes a driven gear gear portion and a driven gear connecting portion formed on one side of the driven gear gear portion. The driven gear gear portion meshes with the drive eccentric wheel gear portion of the drive eccentric wheel to achieve a transmission connection between the driven gear and the drive eccentric wheel. The rear feed shaft of the feed shaft assembly passes through the driven gear connecting portion and is fixedly connected to the driven gear through a clamping sleeve I, so that the rear feed shaft can reciprocate under the drive of the driven gear. The lower part of the synchronous connecting rod is connected to the lower part of the lower synchronous rocker arm through a synchronous swing pin passing through both. The rear end of the rear swing transmission shaft of the swing transmission shaft assembly is connected to the upper part of the lower synchronous rocker arm.

[0009] In another specific embodiment of this utility model, the rear end of the front feeding shaft of the feeding shaft assembly and the front end of the rear feeding shaft are connected by a keyway. A feeding shaft connecting sleeve for fixing the two is also provided at the connection between the front feeding shaft and the rear feeding shaft. The feeding shaft connecting sleeve passes through the bracket in the support arm sleeve and is installed therewith. A front feeding shaft bearing seat is also installed on the bracket in the support arm sleeve. The front feeding shaft is rotatably connected to the front feeding shaft bearing seat through a front feeding shaft rear bearing set on the rear part of its shaft body. The front feeding shaft is rotatably connected to the support arm sleeve through a front feeding shaft front bearing set on the front part of its shaft body. The rear feeding shaft is rotatably connected to the transmission base body through a rear feeding shaft rear bearing set on the rear part of its shaft body.

[0010] In another specific embodiment of this utility model, the rear end of the front swing transmission shaft of the swing transmission shaft assembly and the front end of the rear swing transmission shaft are also connected by a keyway connection. A swing transmission shaft connecting sleeve for fixing the two is also provided at the connection between the front swing transmission shaft and the rear swing transmission shaft. The swing transmission shaft connecting sleeve passes through the bracket in the support arm sleeve and is installed therewith. A front swing transmission shaft bearing seat is also installed on the bracket in the support arm sleeve. The front swing transmission shaft is rotatably connected to the front swing transmission shaft bearing seat through a front swing transmission shaft rear bearing set on the rear part of its shaft body. The rear swing transmission shaft is rotatably connected to the transmission base body through a rear swing transmission shaft rear bearing set on the rear part of its shaft body.

[0011] In a further specific embodiment of this utility model, the power transmission assembly includes a power input gear, a synchronous belt, and a power output gear. The power input gear is located at the upper part of the cavity inside the support arm connecting seat, and the front end of the front feeding shaft of the feeding shaft assembly extends into the power input gear and can drive the power input gear to rotate. The power input gear is also equipped with a clamping sleeve II and a fastening ring for fixing it to the front feeding shaft. The power output gear is located at the lower part of the cavity inside the support arm connecting seat, and the shuttle shaft of the shuttle unit passes through the support arm connecting seat and engages with the power output gear, enabling the power output gear to drive the shuttle shaft to reciprocate. The synchronous belt is vertically positioned within the cavity of the support arm connecting seat and is sleeved on the power input gear and the power output gear, achieving a transmission connection between them.

[0012] In a further specific embodiment of this utility model, the shuttle unit's shuttle shaft includes a shuttle shaft body and a shuttle member formed at the front end of the shuttle shaft body. The shuttle shaft body is disposed within the support arm body and passes through and engages with the power output gear, enabling the power output gear to drive the shuttle shaft body to reciprocate. A rear cover plate of the support arm connecting seat is also fixedly installed at the lower rear part of the support arm connecting seat. The rear end of the shuttle shaft body is rotatably connected to the rear cover plate of the support arm connecting seat via a shuttle shaft shaft rear bearing. A front bearing for the shuttle support shaft is also fitted on the front part of the body. The shuttle support shaft is rotatably connected to the support arm body through the front bearing. The shuttle body and the shuttle core are both mounted on the shuttle support. A shuttle support cam is formed on the shuttle support shaft at the connection between the shuttle support shaft and the shuttle support. The shuttle support cam is used to connect with the oscillating feeding unit to jointly complete the feeding action. The shuttle seat of the oscillating shuttle unit is fixedly mounted on the front end of the support arm body by fasteners, and a shuttle seat retaining ring is installed between the shuttle seat and the support arm body.

[0013] In another specific embodiment of this utility model, the oscillating feeding unit includes a oscillating connecting rod, a feeding oscillating rocker arm, a feeding oscillating shaft, a short connecting rod, an oscillating seat, and a feeding tooth; wherein, the oscillating connecting rod is vertically disposed in the cavity of the support arm connecting seat, and the oscillating connecting rod is connected to the front end of the front oscillating transmission shaft of the oscillating transmission shaft assembly through a oscillating connecting rod linkage arm, and the oscillating connecting rod can reciprocate under the drive of the front oscillating transmission shaft; the feeding oscillating rocker arm is disposed at the lower part of the cavity of the support arm connecting seat and is connected to the lower end of the oscillating connecting rod; and the feeding oscillating shaft is horizontally disposed within the support arm body, and the feeding oscillating shaft... The rear end of the feeding swing arm is inserted into the feeding swing arm for mating connection, and an arc-shaped feeding swing arm is formed at the front end of the feeding swing shaft. The upper end of the swing seat and the upper end of the feeding swing arm are connected by the short connecting rod, so that the swing seat can reciprocate under the drive of the feeding swing shaft, and the feeding tooth is fixedly installed on the swing seat by fasteners. A swing seat mating groove is formed on the swing seat, the shape of which is adapted to the shape of the shuttle shaft cam, and the shuttle shaft cam is fitted into the swing seat mating groove, so that the shuttle shaft and the swing seat are positioned and connected together, so that the swing seat can move up and down under the drive of the shuttle shaft.

[0014] In another specific embodiment of this utility model, an arm pin and an arm connecting rod are also fitted inside the arm body; wherein, the rear end of the arm pin is fitted to the lower part of the arm connecting seat, and the arm connecting rod is fitted to the front end of the arm pin, and the swing seat is fitted to the arm connecting rod, thereby positioning the swing seat is achieved through the arm connecting rod.

[0015] The beneficial effects of this utility model are as follows: First, this technical solution achieves progress in three aspects—spatial adaptability, transmission accuracy, and operational efficiency—through structural improvements and transmission system innovation. By setting a curved support arm assembly and utilizing the support arm body and support arm connecting seat, a unique curved support arm structure design is achieved. The bending angle of the head of this curved support arm assembly precisely matches the curved surface of the inner cavity of the suitcase, allowing the side of the suitcase to be horizontally fitted to the support arm body. Compared to the forced twisting of the suitcase angle by the traditional straight arm structure, this solution allows the side to be sewn to naturally present a horizontal state, providing an ideal working plane for the presser foot needle, completely solving the problem of angle misalignment during side sewing of bags, effectively improving the flatness of zipper stitching, reducing labor intensity, and increasing sewing efficiency. Second, the transmission system has been effectively adapted and optimized by adopting a synchronous belt-type power transmission assembly and other transmission components. The combination scheme of the moving unit direct shaft drive retains the rigid support characteristics of direct shaft drive, while reducing mechanical vibration through the flexible transmission of synchronous belt. It is also adapted to the overall structure of the corner support arm assembly, so that the overall mechanism with the corner support arm structure can maintain the continuity and reliability of power transmission even at complex angles. Furthermore, the overall structure adopts a modular design, making it easy to disassemble and assemble key transmission components, facilitating daily maintenance. The synchronous belt drive system is more wear-resistant than traditional chains, reducing downtime caused by parts replacement and improving the overall efficiency of equipment use. The curved shape of the corner support arm assembly is ergonomic, eliminating the need to forcibly fit the box into the straight arm during operation. Instead, it achieves quick positioning through natural fit. This design significantly reduces the physical exertion when loading and unloading boxes, and is especially suitable for the mass sewing needs of large-size bags. It is easy to assemble and has significant promotional value. Attached Figure Description

[0016] Figure 1 This is an exploded view of the overall structure of this utility model;

[0017] Figure 2 This is a cross-sectional view of the overall structure of this utility model;

[0018] Figure 3 This is a cross-sectional view of the transmission structure of this utility model;

[0019] Figure 4 This is an example diagram illustrating the application of this utility model.

[0020] In the diagram: 1. Support arm sleeve, 11. Support arm sleeve mating seat, 12. Support arm sleeve middle bracket, 121. Front feed shaft bearing seat, 122. Front swing transmission shaft bearing seat; 2. Cornering support arm assembly, 21. Support arm body, 211. Support arm body inner cavity, 212. Needle plate, 213. Support arm body mating seat, 214. Support arm pin, 215. Support arm connecting rod, 22. Support arm connecting seat, 221. Support arm connecting seat hollow cavity, 222. Support arm connecting seat upper mating hole, 223. Support arm connecting seat protrusion, 224. Support arm connecting seat 225. Lower mating hole; 3. Support arm connecting seat rear cover plate; 4. Transmission base; 4. Eccentric wheel transmission assembly; 41. Eccentric wheel connecting rod; 411. Eccentric wheel connecting rod pin; 412. Pin nut; 42. Driving eccentric wheel; 421. Driving eccentric wheel gear part; 422. Driving eccentric wheel through hole; 423. Driving eccentric wheel bushing; 424. Gear pin; 43. Driven gear part; 431. Driven gear part gear part; 432. Driven gear part connecting part; 433. Clamping sleeve I; 44. Synchronizing connecting rod; 45. Lower synchronous rocker arm; 46. 5. Synchronous swing pin; 5. Feed shaft assembly, 51. Front feed shaft, 511. Rear bearing of front feed shaft, 512. Front bearing of front feed shaft, 52. Rear feed shaft, 521. Rear bearing of rear feed shaft, 53. Feed shaft connecting sleeve; 6. Swing transmission shaft assembly, 61. Front swing transmission shaft, 611. Rear bearing of front swing transmission shaft, 62. Rear swing transmission shaft, 621. Rear bearing of rear swing transmission shaft, 63. Swing transmission shaft connecting sleeve; 7. Power transmission assembly, 71. Power input gear, 711. Clamping sleeve II, 712. Fastening ring, 72. Synchronous belt, 73. Power output Gear components; 8. Shuttle unit, 81. Shuttle body, 82. Shuttle support shaft, 821. Shuttle support shaft body, 8211. Shuttle support shaft body rear bearing, 8212. Shuttle support shaft body front bearing, 822. Shuttle support component, 823. Shuttle support shaft cam part, 83. Shuttle core, 84. Shuttle seat, 841. Shuttle seat retaining ring; 9. Swinging feeding unit, 91. Swinging connecting rod, 911. Swinging connecting rod linkage arm, 92. Feeding swing arm, 93. Feeding swing shaft, 931. Feeding swing shaft swing arm, 94. Short connecting rod, 95. Swing seat, 951. Swing seat mating groove, 96. Feeding tooth. Detailed Implementation

[0021] The following will provide a detailed description by way of embodiments. However, the description of the embodiments is not intended to limit the present utility model. Any formal but not substantive equivalent transformations made based on the present utility model concept should be considered within the scope of the present utility model's technical solution.

[0022] In the following description, all directional or orientational concepts involving up, down, left, right, front, and back refer to the current situation. Figure 1The description pertains to the location and state of the object, and therefore should not be construed as a specific limitation on the technical solution provided by this utility model.

[0023] Please refer to Figures 1 to 3This invention illustrates a horizontal luggage machine support arm device, comprising: a support arm sleeve 1, which is horizontally arranged and has an inner cavity extending through its length; and a turning support arm assembly 2, which includes a horizontally arranged support arm body 21 and a vertically arranged support arm connecting seat 22. The support arm connecting seat 22 is disposed at the front end of the support arm sleeve 1 along its length. The support arm connecting seat 22 is hollow inside and forms a hollow cavity 221 that communicates with the inner cavity of the support arm sleeve 1. The support arm body 21 is fixed to the bottom of the support arm connecting seat 22. The trolley case to be processed can be placed horizontally on the horizontally arranged support arm body 21, thereby facilitating the zipper assembly. The sewing process includes: a transmission base 3, which is located at the rear end of the support arm sleeve 1 along its length; an eccentric wheel transmission assembly 4, which is located on the side of the transmission base 3 opposite to the support arm sleeve 1, capable of reciprocating under the drive of the machine head, and connected to the transmission base 3; and a feeding shaft assembly 5, which passes through the support arm body 21 and includes a front feeding shaft 51 and a rear feeding shaft 52 connected together. The rear end of the rear feeding shaft 52 passes through the transmission base 3 and is connected to the eccentric wheel transmission assembly 4, while the front end of the front feeding shaft 51 extends out of the support arm body 21. And it extends into the cavity 221 of the aforementioned support arm connecting seat; the swing transmission shaft assembly 6, which also passes through the support arm body 21 and includes a front swing transmission shaft 61 and a rear swing transmission shaft 62 connected together, the rear end of the aforementioned rear swing transmission shaft 62 is engaged with the aforementioned eccentric wheel transmission assembly 4 and can swing back and forth under the drive of the aforementioned transmission base 3, while the front end of the aforementioned front swing transmission shaft 61 extends into the aforementioned support arm connecting seat 22; the power transmission assembly 7, which is disposed in the cavity 221 of the aforementioned support arm connecting seat 22 and is connected to the aforementioned feeding shaft assembly 5; the shuttle unit 8, which is horizontally inserted into the aforementioned support arm body 21. The aforementioned shuttle unit 8 also includes a shuttle body 81, a shuttle support shaft 82, a shuttle core 83, and a shuttle seat 84 disposed at the front of the support body 21. The aforementioned shuttle body 81 and shuttle support shaft 82 are connected by transmission and can reciprocate under the drive of the power transmission component 7. The aforementioned shuttle feeding unit 9 is disposed in the aforementioned support body 21 and support arm connecting seat 22. The aforementioned shuttle feeding unit 9 is connected by transmission and can reciprocate under the drive of the aforementioned shuttle transmission shaft component 6. The aforementioned shuttle feeding unit 9 is connected by cooperation with the aforementioned shuttle support shaft 82 and together with the shuttle support shaft 82 completes the feeding action.

[0024] In this embodiment, the aforementioned support arm body 21 is hollow inside and has a support arm body cavity 211 extending from its front end to its rear end. A needle plate 212 is provided at the upper part of the front section of the support arm body 21. The needle plate 212 has a relief groove corresponding to the upper bag machine needle. The shuttle body 81 of the aforementioned shuttle unit 8 and the front component of the swing feeding unit 9 are located at the lower part corresponding to the relief groove.

[0025] Furthermore, a support arm sleeve mating seat 11 is formed at the center of the front end of the aforementioned support arm sleeve 1, and a corresponding mating hole 222 is provided on the upper part of the aforementioned support arm connecting seat 22. The aforementioned support arm sleeve mating seat 11 is fitted into the mating hole 222 of the support arm connecting seat, thereby realizing the mating connection between the aforementioned support arm sleeve 1 and the support arm connecting seat 22. In this embodiment, the aforementioned support arm sleeve mating seat 11 is a stepped cylindrical boss and is interference-fitted with the mating hole 222 of the support arm connecting seat. In addition, a support arm sleeve bracket 12 is fixedly installed at the middle of the inner cavity of the aforementioned support arm sleeve 1. The middle bracket 12 is used to position the aforementioned front feeding shaft 51 and rear feeding shaft 52, as well as the front swing transmission shaft 61 and rear swing transmission shaft 62. A support arm connecting seat protrusion 223 is also formed at the lower front side of the aforementioned support arm connecting seat 22. A support arm body mating seat 213 is formed at the center of the rear end of the aforementioned support arm body 21. A lower mating hole 224 of the support arm connecting seat protrusion 223 of the aforementioned support arm connecting seat 22 is correspondingly opened at the center of the support arm connecting seat protrusion 223. The aforementioned support arm body mating seat 213 is fitted into the lower mating hole 224 of the support arm connecting seat, thereby realizing the positioning connection between the support arm body 21 and the support arm connecting seat 22.

[0026] Please continue reading Figure 1The aforementioned eccentric wheel transmission assembly 4 includes an eccentric wheel connecting rod 41, a driving eccentric wheel 42, a driven gear 43, a synchronous connecting rod 44, and a synchronous rocker arm 45. The eccentric wheel connecting rod 41 is connected to the machine head and can reciprocate under the drive of the machine head. The bottom end of the eccentric wheel connecting rod 41 is eccentrically connected to the driving eccentric wheel 42. An eccentric wheel connecting rod pin 411 is disposed at the bottom of the eccentric wheel connecting rod 41, and the eccentric wheel connecting rod pin 411 passes through the driving eccentric wheel 42. The spindle 42 is connected to the eccentric wheel connecting rod 41 via a pin and nut 412. A drive eccentric wheel gear portion 421 is formed on the circumferential surface of the drive eccentric wheel 42, and a drive eccentric wheel through hole 422 is formed at the center of the drive eccentric wheel 42. A drive eccentric wheel bushing 423 is disposed inside the drive eccentric wheel 42, and a gear pin 424 is fitted inside the drive eccentric wheel bushing 423. One end of the gear pin 424 in the length direction... The drive eccentric wheel 42 is mounted on the transmission base 3, thereby achieving a transmission connection between the drive eccentric wheel 42 and the transmission base 3. The driven gear 43 includes a driven gear gear portion 431 and a driven gear connecting portion 432 formed on one side of the driven gear gear portion 431. The driven gear gear portion 431 meshes with the drive eccentric wheel gear portion 421 of the drive eccentric wheel 42, thereby achieving a transmission connection between the driven gear 43 and the drive eccentric wheel 42. The aforementioned feed shaft assembly 5... The rear feed shaft 52 is inserted into the aforementioned driven gear connecting part 432 and fixedly connected to the driven gear 43 through a clamping sleeve I 433, so that the rear feed shaft 52 can reciprocate under the drive of the driven gear 43; the lower part of the aforementioned synchronous connecting rod 44 and the lower part of the lower synchronous rocker arm 45 are connected by a synchronous swing pin 46 passing through them, and the rear end of the rear swing transmission shaft 62 of the aforementioned swing transmission shaft assembly 6 is connected to the upper part of the lower synchronous rocker arm 45.

[0027] Furthermore, the rear end of the front feed shaft 51 of the aforementioned feed shaft assembly 5 is connected to the front end of the rear feed shaft 52 by a keyway connection. A feed shaft connecting sleeve 53 for fixing the two is also provided at the connection between the front feed shaft 51 and the rear feed shaft 52. The feed shaft connecting sleeve 53 passes through the bracket 12 in the aforementioned support arm sleeve and is installed therewith. A front feed shaft bearing seat 121 is also installed on the bracket 12 in the aforementioned support arm sleeve. The aforementioned front feed shaft 51 is rotatably connected to the front feed shaft bearing seat 121 by a front feed shaft rear bearing 511 set on the rear part of its shaft body. The front feed shaft 51 is rotatably connected to the aforementioned support arm sleeve 1 by a front feed shaft front bearing 512 set on the front part of its shaft body. The aforementioned rear feed shaft 52 is rotatably connected to the aforementioned transmission base 3 body by a rear feed shaft rear bearing 521 set on the rear part of its shaft body.

[0028] In this embodiment, the rear end of the front swing transmission shaft 61 and the front end of the rear swing transmission shaft 62 of the aforementioned swing transmission shaft assembly 6 are also connected by a keyway. A swing transmission shaft connecting sleeve 63 for fixing the two is also provided at the connection between the front swing transmission shaft 61 and the rear swing transmission shaft 62. The swing transmission shaft connecting sleeve 63 passes through the bracket 12 in the aforementioned support arm sleeve and is installed therewith. A front swing transmission shaft bearing seat 122 is also installed on the bracket 12 in the aforementioned support arm sleeve. The aforementioned front swing transmission shaft 61 is rotatably connected to the front swing transmission shaft bearing seat 122 through a front swing transmission shaft rear bearing 611 provided on the rear part of its shaft body. The aforementioned rear swing transmission shaft 62 is rotatably connected to the aforementioned transmission base 3 body through a rear swing transmission shaft rear bearing 621 provided on the rear part of its shaft body.

[0029] Please continue reading Figures 1 to 3The aforementioned power transmission assembly 7 includes a power input gear 71, a synchronous belt 72, and a power output gear 73; wherein, the aforementioned power input gear 71 is located at the upper part of the cavity 221 of the support arm connecting seat inside the aforementioned support arm connecting seat 22, and the front end of the front feeding shaft 51 of the aforementioned feeding shaft assembly 5 extends into the power input gear 71 and can drive the power input gear 71 to rotate, and the aforementioned power input gear 71 is also equipped with a clamping sleeve II 711 and a fastening ring 712 for fixing it to the front feeding shaft 51; The aforementioned power output gear 73 is located at the lower part of the cavity 221 inside the support arm connecting seat 22. The shuttle shaft 82 of the aforementioned shuttle unit 8 passes through the support arm connecting seat 22 and engages with the power output gear 73, so that the power output gear 73 can drive the aforementioned shuttle shaft 82 to reciprocate. The aforementioned synchronous belt 72 is vertically arranged in the cavity 221 of the aforementioned support arm connecting seat, and the synchronous belt 72 is sleeved on the aforementioned power input gear 71 and power output gear 73 to realize the transmission connection between the two.

[0030] Furthermore, the shuttle shaft 82 of the aforementioned shuttle unit 8 includes a shuttle shaft body 821 and a shuttle member 822 formed at the front end of the shuttle shaft body 821. The shuttle shaft body 821 is disposed in the support arm body 21 and passes through the aforementioned power output gear 73 and is connected to it, so that the aforementioned power output gear 73 can drive the shuttle shaft body 821 to reciprocate. A support arm connecting seat rear cover plate 225 is also fixedly installed at the lower rear part of the aforementioned support arm connecting seat 22. The rear end of the aforementioned shuttle shaft body 821 is rotatably connected to the support arm connecting seat rear cover plate 225 through a shuttle shaft body rear bearing 8211. A sleeve is also provided on the front part of the shuttle shaft body 821. A front bearing 8212 is provided for the shuttle support shaft body 821, through which the shuttle support shaft body 821 is rotatably connected to the support arm body 21; the shuttle body 81 and the shuttle core 83 are both mounted on the shuttle support member 822; a shuttle support shaft cam portion 823 is formed on the shuttle support shaft 82 at the connection between the shuttle support shaft body 821 and the shuttle support member 822, and the shuttle support shaft cam portion 823 is used to cooperate with the swing feeding unit 9 to jointly complete the feeding action; the shuttle seat 84 of the shuttle unit 8 is fixedly mounted at the front end of the support arm body 21 by fasteners, and a shuttle seat retaining ring 841 is also installed between the shuttle seat 84 and the support arm body 21.

[0031] Preferably, the aforementioned oscillating feeding unit 9 includes an oscillating connecting rod 91, a feeding oscillating rocker arm 92, a feeding oscillating shaft 93, a short connecting rod 94, an oscillating seat 95, and a feeding tooth 96; wherein, the aforementioned oscillating connecting rod 91 is vertically disposed in the cavity 221 of the support arm connecting seat 22, and the oscillating connecting rod 91 is connected to the front end of the front oscillating transmission shaft 61 of the aforementioned oscillating transmission shaft assembly 6 through an oscillating connecting rod linkage arm 911, and the oscillating connecting rod 91 can reciprocate under the drive of the front oscillating transmission shaft 61; the aforementioned feeding oscillating rocker arm 92 is disposed at the lower part of the cavity 221 of the aforementioned support arm connecting seat and is connected to the lower end of the aforementioned oscillating connecting rod 91; and the aforementioned feeding oscillating shaft 93 is horizontally disposed in the aforementioned support arm body 21, and the rear end of the feeding oscillating shaft 93 passes through the aforementioned feeding tooth 96. The material swing arm 92 is connected to the material swing arm 92, and an arc-shaped material swing arm 931 is formed at the front end of the material swing shaft 93. The upper end of the aforementioned swing seat 95 and the upper end of the material swing arm 931 are connected by the aforementioned short connecting rod 94, so that the swing seat 95 can reciprocate under the drive of the material swing shaft 93. The aforementioned feeding tooth 96 is fixedly installed on the aforementioned swing seat 95 by fasteners. A swing seat mating groove 951 is formed on the aforementioned swing seat 95. The shape of the swing seat mating groove 951 is adapted to the shape of the aforementioned shuttle shaft cam 823, and the aforementioned shuttle shaft cam 823 is mated in the swing seat mating groove 951. Thus, the aforementioned shuttle shaft 82 and the swing seat 95 are positioned and connected together, so that the swing seat 95 can move up and down under the drive of the shuttle shaft 82.

[0032] In this embodiment, a support arm pin 214 and a support arm connecting rod 215 are also fitted inside the aforementioned support arm body 21. The rear end of the aforementioned support arm pin 214 is fitted to the lower part of the aforementioned support arm connecting seat 22, while the aforementioned support arm connecting rod 215 is fitted to the front end of the support arm pin 214. The aforementioned swing seat 95 is fitted to the support arm connecting rod 215, thereby positioning the aforementioned swing seat 95 through the support arm connecting rod 215.

[0033] Please continue reading Figures 1 to 4The applicant briefly describes the working principle of the technical solution provided by this utility model: When it is necessary to sew the side of the bag, the bag is placed horizontally on the support arm body 21, and the bag machine is started, so that the machine head drives the eccentric wheel connecting rod 41 in the eccentric wheel transmission assembly 4 to rotate, and in turn drives the feeding shaft assembly 5 and the transmission base 3 to reciprocate through the transmission of the active eccentric wheel 42 and the driven gear 43. At the same time, the synchronous connecting rod 44 and the lower synchronous rocker arm 45 further drive the swing transmission shaft assembly 6 to rotate; then the front feeding shaft 51 of the feeding shaft assembly 5 drives the synchronous belt drive power transmission assembly 7 to move, and the power output gear 73 further drives the oscillating transmission shaft assembly 6 to rotate. The step drives the shuttle shaft 82 in the shuttle unit 8 to rotate back and forth, causing the shuttle body 81 and the bobbin 83 to swing back and forth. At the same time, the front swing transmission shaft 61 of the swing transmission shaft assembly 6 drives the swing connecting rod 91 in the swing feeding unit 9 to move up and down. The swing connecting rod 91 further drives the feeding swing shaft 93 to swing back and forth through the feeding swing rocker arm 92. The feeding swing shaft 93 then drives the short connecting rod 94 and the swing seat 95 to swing left and right. Meanwhile, the swing seat 95 moves up and down under the drive of the shuttle shaft 82, which further drives the feeding tooth 96 to swing back and forth, realize the feeding action, and complete the sewing work for the bag.

[0034] It should be noted that the above embodiments can be freely combined as needed. The above are merely preferred embodiments of this utility model. It should be pointed out that for those skilled in the art, several improvements and modifications can be made without departing from the principle of this utility model, and these improvements and modifications should also be considered within the protection scope of this utility model.

[0035] In summary, the technical solution provided by this utility model makes up for the shortcomings of the prior art, successfully completes the utility model task, and faithfully realizes the technical effects described by the applicant in the above technical effect column.

Claims

1. A horizontal bag-making machine support arm device, characterized in that, include: A support arm sleeve (1), which is arranged laterally and has a support body inner cavity extending through its length; a turning arm assembly (2), which includes a laterally arranged arm body (21) and a vertically arranged arm connecting seat (22), wherein the arm connecting seat (22) is disposed at the front end position of the support arm sleeve (1) in the length direction, the arm connecting seat (22) is hollow inside and forms an arm connecting seat hollow cavity (221) communicating with the inner cavity of the support arm sleeve (1), and the arm body (21) is fixed to the bottom position of the arm connecting seat (22); a transmission base (3), which is disposed on the arm body sleeve (1) and the support arm sleeve (1) in the length direction; At the rear end of the support arm sleeve (1) along its length; an eccentric wheel transmission assembly (4), which is capable of reciprocating under the drive of the machine head, and is connected to the transmission base (3); a feeding shaft assembly (5), which passes through the support arm body (21) and includes a front feeding shaft (51) and a rear feeding shaft (52) connected together, the rear end of the rear feeding shaft (52) passes through the transmission base (3) and is connected to the eccentric wheel transmission assembly (4), and the front end of the front feeding shaft (51) extends out of the support arm body (21) and enters the hollow cavity (221) of the support arm connecting seat; A swing transmission shaft assembly (6) passes through the support arm body (21) and includes a front swing transmission shaft (61) and a rear swing transmission shaft (62) connected front to back. The rear swing transmission shaft (62) can swing back and forth under the drive of the transmission base (3), while the front end of the front swing transmission shaft (61) extends into the support arm connecting seat (22); a power transmission assembly (7) is disposed in the cavity (221) of the support arm connecting seat (22) and is connected to the feeding shaft assembly (5); a shuttle unit (8) is horizontally inserted through the support arm body (21). The shuttle unit (8) is inserted into the hollow cavity (221) of the support arm connecting seat and is connected to the power transmission assembly (7) for transmission. The shuttle unit (8) also includes a shuttle body (81), a shuttle support shaft (82), a shuttle core (83) and a shuttle seat (84) disposed at the front of the support arm body (21). The shuttle body (81) and the shuttle support shaft (82) are connected for transmission and can reciprocate under the drive of the power transmission assembly (7). The oscillating feeding unit (9) is disposed in the support arm body (21) and the support arm connecting seat (22). The oscillating feeding unit (9) is connected for transmission with the oscillating transmission shaft assembly (6) and can reciprocate under its drive.

2. The horizontal baggage machine support arm device according to claim 1, characterized in that: The arm body (21) is hollow inside and has an inner cavity (211) that extends from its front end to its rear end. A needle plate (212) is provided at the upper front part of the arm body (21). The needle plate (212) has a relief groove corresponding to the upper bag machine needle. The shuttle body (81) of the shuttle unit (8) and the front assembly of the swing feeding unit (9) are located below the relief groove.

3. The horizontal baggage machine support arm device according to claim 2, characterized in that: A support arm sleeve mating seat (11) is formed at the center of the front end of the support arm sleeve (1), and a mating hole (222) is correspondingly provided on the upper part of the support arm connecting seat (22). The support arm sleeve mating seat (11) is fitted into the mating hole (222) of the support arm connecting seat, thereby realizing the mating connection between the support arm sleeve (1) and the support arm connecting seat (22). In addition, a support arm sleeve middle bracket (12) is fixedly installed at the middle of the inner cavity of the support arm sleeve (1). The support arm sleeve middle bracket (12) is used to support the front feeding shaft (51) and the rear feeding shaft (52) and the front... The swing transmission shaft (61) and the rear swing transmission shaft (62) are positioned; a support arm connecting seat protrusion (223) is also formed at the lower front part of the support arm connecting seat (22), and a support arm body mating seat (213) is formed at the center of the rear end of the support arm body (21). A lower mating hole (224) of the support arm connecting seat is correspondingly opened at the center of the support arm connecting seat protrusion (223) of the support arm connecting seat (22). The support arm body mating seat (213) is fitted into the lower mating hole (224) of the support arm connecting seat, thereby realizing the positioning connection between the support arm body (21) and the support arm connecting seat (22).

4. The horizontal baggage machine support arm device according to claim 1, characterized in that: The eccentric wheel transmission assembly (4) includes an eccentric wheel connecting rod (41), a driving eccentric wheel (42), a driven gear (43), a synchronous connecting rod (44), and a synchronous rocker arm (45); wherein, the eccentric wheel connecting rod (41) is connected to the machine head and can reciprocate under the drive of the machine head, and the bottom end of the eccentric wheel connecting rod (41) is eccentrically connected to the driving eccentric wheel (42), and an eccentric wheel connecting rod pin (411) is provided at the bottom of the eccentric wheel connecting rod (41), the eccentric wheel connecting rod pin (411) passing through the driving eccentric wheel (42). The eccentric wheel (42) is connected to the eccentric wheel connecting rod (41) via a pin and nut (412). The circumferential surface of the eccentric wheel (42) is formed with an eccentric wheel gear (421), and an eccentric wheel through hole (422) is formed at the center of the eccentric wheel (42). An eccentric wheel bushing (423) is provided inside the eccentric wheel (42), and a gear pin (424) is fitted inside the eccentric wheel bushing (423). One end of the gear pin (424) in the length direction is... The drive eccentric wheel (42) is mounted on the transmission base (3) to achieve a transmission connection between the drive eccentric wheel (42) and the transmission base (3). The driven gear (43) includes a driven gear gear part (431) and a driven gear connecting part (432) formed on one side of the driven gear gear part (431). The driven gear gear part (431) meshes with the drive eccentric wheel gear part (421) of the drive eccentric wheel (42) to achieve a transmission connection between the driven gear (43) and the drive eccentric wheel (42). The feed shaft assembly (5) The rear feed shaft (52) is inserted into the driven gear connecting part (432) and fixedly connected to the driven gear (43) through a clamping sleeve I (433), so that the rear feed shaft (52) can reciprocate under the drive of the driven gear (43); the lower part of the synchronous connecting rod (44) is connected to the lower part of the lower synchronous rocker arm (45) through a synchronous swing pin (46) passing through the two, and the rear end of the rear swing transmission shaft (62) of the swing transmission shaft assembly (6) is connected to the upper part of the lower synchronous rocker arm (45).

5. The horizontal baggage machine support arm device according to claim 3, characterized in that: The rear end of the front feed shaft (51) of the feed shaft assembly (5) is connected to the front end of the rear feed shaft (52) by a keyway connection. A feed shaft connecting sleeve (53) for fixing the two is also provided at the connection between the front feed shaft (51) and the rear feed shaft (52). The feed shaft connecting sleeve (53) passes through the bracket (12) in the support arm sleeve and is installed therewith. A front feed shaft bearing seat (121) is also installed on the bracket (12) in the support arm sleeve. The front feeding shaft (51) is rotatably connected to the front feeding shaft bearing seat (121) through a front feeding shaft rear bearing (511) provided on the rear part of its shaft body, and the front feeding shaft (51) is rotatably connected to the support arm sleeve (1) through a front feeding shaft front bearing (512) provided on the front part of its shaft body, and the rear feeding shaft (52) is rotatably connected to the transmission base (3) body through a rear feeding shaft rear bearing (521) provided on the rear part of its shaft body.

6. The horizontal baggage machine support arm device according to claim 3, characterized in that: The rear end of the front swing transmission shaft (61) of the swing transmission shaft assembly (6) and the front end of the rear swing transmission shaft (62) are connected by a keyway. A swing transmission shaft connecting sleeve (63) for fixing the two is also provided at the connection between the front swing transmission shaft (61) and the rear swing transmission shaft (62). The swing transmission shaft connecting sleeve (63) is inserted into the bracket (12) in the support arm sleeve and is installed therewith. A front swing transmission shaft bearing seat (122) is also installed on the bracket (12) in the support arm sleeve. The front swing transmission shaft (61) is rotatably connected to the front swing transmission shaft bearing seat (122) through a front swing transmission shaft rear bearing (611) set on the rear part of its shaft body. The rear swing transmission shaft (62) is rotatably connected to the transmission base (3) body through a rear swing transmission shaft rear bearing (621) set on the rear part of its shaft body.

7. The horizontal baggage machine support arm device according to claim 1, characterized in that: The power transmission assembly (7) includes a power input gear (71), a synchronous belt (72), and a power output gear (73); wherein, the power input gear (71) is located at the upper part of the cavity (221) of the support arm connecting seat (22) inside the support arm connecting seat (22), and the front end of the front feeding shaft (51) of the feeding shaft assembly (5) extends into the power input gear (71) and can drive the power input gear (71) to rotate, and the power input gear (71) is also equipped with a clamping sleeve II (711) and a fastening ring (712) for fixing it to the front feeding shaft (51); The power output gear (73) is located at the lower part of the cavity (221) of the support arm connecting seat (22). The shuttle shaft (82) of the shuttle unit (8) passes through the support arm connecting seat (22) and engages with the power output gear (73) to drive the shuttle shaft (82) to rotate back and forth. The synchronous belt (72) is vertically arranged in the cavity (221) of the support arm connecting seat and is sleeved on the power input gear (71) and the power output gear (73) to achieve the transmission connection between them.

8. The horizontal baggage machine support arm device according to claim 7, characterized in that: The shuttle unit (8) has a shuttle shaft (82) with a shuttle shaft body (821) and a shuttle member (822) at the front end of the shuttle shaft body (821). The shuttle shaft body (821) is disposed in the support arm body (21) and passes through the power output gear (73) and is connected to it, so that the power output gear (73) can drive the shuttle shaft body (821) to reciprocate. A support arm connecting seat rear cover plate (225) is fixedly installed at the lower rear part of the support arm connecting seat (22). The rear end of the shuttle shaft body (821) is rotatably connected to the support arm connecting seat rear cover plate (225) through a shuttle shaft body rear bearing (8211). A shuttle shaft is also sleeved on the front part of the shuttle shaft body (821). The front bearing (8212) of the shuttle shaft (821) enables the shuttle shaft body (821) to rotate with the support arm body (21); the shuttle body (81) and the shuttle core (83) are both fitted on the shuttle support member (822); a shuttle shaft cam (823) is formed on the shuttle shaft (82) at the connection between the shuttle shaft body (821) and the shuttle support member (822), and the shuttle shaft cam (823) is used to cooperate with the swing feeding unit (9) to jointly complete the feeding action; the shuttle seat (84) of the swing shuttle unit (8) is fixedly installed at the front end of the support arm body (21) by fasteners, and a shuttle seat retaining ring (841) is also installed between the shuttle seat (84) and the support arm body (21).

9. A horizontal bag-making machine support arm device according to claim 8, characterized in that: The swing feeding unit (9) includes a swing link (91), a feeding swing arm (92), a feeding swing shaft (93), a short link (94), a swing seat (95), and a feeding tooth (96); wherein, the swing link (91) is arranged vertically in the cavity (221) of the support arm connecting seat (22), and the swing link (91) is connected to the front end of the front swing transmission shaft (61) of the swing transmission shaft assembly (6) by a swing arm. The moving linkage arm (911) is connected to the swing linkage (91), which can reciprocate under the drive of the front swing transmission shaft (61). The feeding swing arm (92) is located at the lower part of the cavity (221) in the support arm connecting seat and is connected to the lower end of the swing linkage (91). The feeding swing shaft (93) is transversely inserted into the support arm body (21), and the rear end of the feeding swing shaft (93) is inserted into the feeding arm body (61). The material swing arm (92) is connected to the material swing arm (92), and an arc-shaped material swing arm (931) is formed at the front end of the material swing shaft (93). The upper end of the swing seat (95) is connected to the upper end of the material swing arm (931) through the short connecting rod (94), so that the swing seat (95) can reciprocate under the drive of the material swing shaft (93), and the feeding tooth (96) is fixedly installed in the material swing arm (93) by fasteners. The swing seat (95) has a swing seat mating groove (951) on it. The shape of the swing seat mating groove (951) is adapted to the shape of the shuttle shaft cam (823). The shuttle shaft cam (823) is fitted into the swing seat mating groove (951). Thus, the shuttle shaft (82) and the swing seat (95) are positioned together, so that the swing seat (95) can move up and down under the drive of the shuttle shaft (82).

10. A horizontal bag-making machine support arm device according to claim 9, characterized in that: Inside the support arm body (21), there is also a support arm pin (214) and a support arm connecting rod (215); wherein, the rear end of the support arm pin (214) is fitted to the lower part of the support arm connecting seat (22), and the support arm connecting rod (215) is fitted to the front end of the support arm pin (214). The swing seat (95) is fitted to the support arm connecting rod (215), thereby positioning the swing seat (95) is achieved through the support arm connecting rod (215).

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