Needle bar device of template machine

Abstract

The technical scheme belongs to the technical field of template machines, and particularly relates to a needle rod device of a template machine, which comprises a rack, a needle rod, a needle head, a needle rod, a needle rod and a needle rod, the displacement mechanism is arranged on the machine frame, the displacement mechanism comprises a displacement driving part and a needle rod connector arranged at the output end of the displacement driving part, the front end of the needle rod connector is arranged outside the machine needle rod in a sleeving mode, and the displacement driving part drives the machine needle rod to move in a reciprocating mode in the needle inserting direction through the needle rod connector; the rotating mechanism is arranged on the machine frame, the rotating mechanism comprises a rotating driving part, the machine needle rod is arranged at the output end of the rotating driving part, and the rotating driving part is used for driving the machine needle rod to rotate with the axis of the machine needle rod as the center.

Description

Technical Field

[0001] This technical solution relates to the field of template machine technology, and specifically refers to a needle bar device for a template machine. Background Technology

[0002] Template sewing machines refer to fully automated template production that combines garment template CAD software, garment template sewing CAD software, and advanced CNC technology. This improves production efficiency and product quality, reduces the technical requirements for skilled workers, and replaces the original manually operated sewing machines with more automated, computer-controlled machines. This reduces reliance on highly skilled personnel, ensures quality, and solves the problems of labor shortages and skill deficiencies in the industry. It also automates garment sewing and promotes the assembly line production of garment template processes.

[0003] The needle of a template sewing machine has a thread inlet, which is mostly flat. Therefore, the needle's orientation needs to match the direction of the sewing stitch when sewing. When the template sewing machine is sewing the edges of clothing, the fabric needs to be turned, and the needle also needs to turn accordingly. Chinese patent CN221029015 discloses a template sewing machine with a vertical rotary hook mechanism. The structure of this template sewing machine is that the needle, upper thread cutting assembly, presser foot assembly, and sewing assembly are set on the same rotatable platform. When the needle needs to be rotated, the entire platform is driven to rotate to achieve the rotation of the needle. This template sewing machine has a complex structure and many rotating parts, which increases the power burden on the drive components, is unsafe, and increases the risk of damage to the parts. Summary of the Invention

[0004] The purpose of this technical solution is to provide a needle bar device for a template machine. By setting independent displacement and rotation mechanisms for the needle bar, the problem of needing to drive multiple components when the original needle bar rotates is solved.

[0005] The purpose of this technical solution is achieved as follows:

[0006] A needle bar device for a template machine includes: a frame on which a needle bar is movably mounted, the needle bar having a needle tip at its front end; a displacement mechanism mounted on the frame, the displacement mechanism including a displacement drive and a needle bar connector at its output end, the front end of the needle bar connector being sleeved outside the needle bar, the displacement drive driving the needle bar to reciprocate vertically via the needle bar connector; and a rotation mechanism mounted on the frame, the rotation mechanism including a rotation drive, the needle bar being disposed at the output end of the rotation drive, the rotation drive driving the needle bar to rotate around its axis.

[0007] Preferably, the needle bar device further includes a thread take-up mechanism, which is mounted on the frame and includes: a thread take-up drive; a thread take-up rod disposed at the output end of the thread take-up drive; and a guide tube disposed at the output end of the rotating mechanism and connected to the needle bar; wherein the guide tube is hollow to form a guide channel, the needle bar is hollow to form a thread feeding channel, and the needle is located below the thread feeding channel; the sewing thread enters the guide channel from the thread take-up hole at the front end of the thread take-up rod, and then extends through the thread feeding channel and enters the needle.

[0008] Preferably, the displacement mechanism further includes: a crank-connecting rod assembly disposed at the output end of the displacement drive; a guide slide disposed on the frame and having a guide groove; and a guide slider movably disposed within the guide groove; wherein the needle bar connector is sequentially connected to the output end of the crank-connecting rod assembly and the guide slider, and with the cooperation of the guide slider and the guide groove, the crank-connecting rod assembly is used to convert the rotation of the output end of the displacement drive into the movement of the needle bar connector, thereby realizing the movement of the needle bar.

[0009] Preferably, the displacement mechanism further includes a displacement assembly comprising: a displacement drive element; a first synchronous pulley disposed at the output end of the displacement drive element; a displacement drive shaft disposed on the frame; a second synchronous pulley disposed on the displacement drive shaft; a manual pulley disposed on the displacement drive shaft; and a first synchronous belt disposed outside the first and second synchronous pulleys; wherein, the front end of the displacement drive shaft is connected to a crank-connecting rod assembly, and the displacement drive element or the manual pulley is used to drive the crank-connecting rod assembly to work via the displacement drive shaft.

[0010] Preferably, the crank-connecting rod assembly includes: a needle bar crank disposed on the displacement drive shaft; a crank pin disposed on the needle bar crank; and a needle bar connecting rod, the upper end of which is connected to the needle bar crank via the crank pin, and the lower end of which is connected to the machine needle bar via the needle bar connector; wherein, the rotation of the displacement drive shaft drives the needle bar crank to swing, and the displacement of the machine needle bar is realized through the needle bar connecting rod.

[0011] Preferably, the displacement mechanism further includes two stops, both of which are disposed on the needle bar and located on both sides of the needle bar connector; the stops cooperate with the needle bar connecting rod to realize the movement of the needle bar.

[0012] Preferably, the rotating mechanism further includes a rotating assembly comprising: a third synchronous pulley disposed at the output end of the rotating drive component; a fourth synchronous pulley disposed on the frame via a bearing; and a second synchronous belt sleeved over the third and fourth synchronous pulleys; wherein the guide tube is connected to the fourth synchronous pulley, and the fourth synchronous pulley drives the needle rod to rotate via the guide tube.

[0013] Preferably, the rotating mechanism further includes a connecting assembly for adjusting the connection position of the lead tube and the needle bar, comprising: a mounting bracket rotatably mounted on the frame and having a connecting slide; and a connecting joint disposed at the connection between the lead tube and the needle bar and movably mounted on the connecting slide via a connecting slider on its end side.

[0014] The key and beneficial technical effects of this technical solution compared to existing technologies are:

[0015] 1. This technical solution designs an independent rotating drive component to realize the rotation of the needle bar. The rotating drive component is only used to drive the rotation of the needle bar and is not used as a power source for the operation of other parts. At the same time, the rotating drive component will not affect the movement of the needle bar. This simplifies the original structure of the parts used for the rotation of the needle bar, saves power, and reduces safety risks.

[0016] 2. The thread take-up mechanism designed in this technical solution has a thread guide channel inside the guide tube and a thread feeding channel inside the needle bar. The sewing thread enters the guide channel and the thread feeding channel through the thread take-up lever, avoiding the situation where the sewing thread is exposed when the original template machine is working. This reduces the risk of sewing thread tangling, knotting, and snagging. At the same time, when the sewing thread extends out of the thread feeding channel, it is closer to the needle tip, which can reduce the angle of the sewing thread during its journey, thus making the thread feeding more stable and improving the sewing quality. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the structure of this technical solution.

[0018] Figure 2 This is an exploded view of the technical solution.

[0019] Figure 3 This is a structural schematic diagram of some parts.

[0020] Figure 4 This is a cross-sectional view of the technical solution.

[0021] Reference numerals: 1. Frame; 11. Needle bar; 111. Wiring channel; 2. Displacement mechanism; 21. Crank-connecting rod assembly; 211. Needle bar crank; 212. Crank pin; 213. Needle bar connecting rod; 22. Displacement assembly; 221. Displacement drive component; 222. Synchronous pulley one; 223. Displacement drive shaft; 224. Synchronous pulley two; 225. Manual pulley; 226. Synchronous belt one; 23. Guide slide; 24. Guide groove; 25. Guide slider 26. Needle bar connector; 27. Stop block; 3. Rotating mechanism; 31. Rotating assembly; 311. Rotating drive component; 312. Synchronous pulley three; 313. Synchronous pulley four; 314. Synchronous belt two; 32. Connecting assembly; 321. Mounting bracket; 322. Connecting slide; 323. Connecting connector; 324. Connecting slider; 4. Thread take-up mechanism; 41. Thread take-up drive component; 42. Thread take-up rod; 43. Wire tube; 44. Wire channel; 45. Thread take-up hole. Detailed Implementation

[0022] The specific implementation of this technical solution will be further described in detail below with reference to the accompanying drawings.

[0023] like Figure 1 As shown, a needle bar device for a template machine includes a frame 1, a needle bar 11, a needle head, a displacement mechanism 2, a rotation mechanism 3, and a thread take-up mechanism 4. The needle bar 11 is movably mounted on the frame 1. In this embodiment, the needle bar 11 can move up and down and rotate around an axis. The needle head is located at the lower end of the needle bar 11. When the needle bar 11 moves or rotates, the needle head can move or rotate. The displacement mechanism 2, the rotation mechanism 3, and the thread take-up mechanism 4 are all mounted on the frame 1. The displacement mechanism 2 and the rotation mechanism 3 are both connected to the needle bar 11. The thread take-up mechanism 4 is located above the needle bar 11. The displacement mechanism 2 is used to control the up and down movement of the needle bar 11, the rotation mechanism 3 is used to control the rotation of the needle bar 11 around an axis, and the thread take-up mechanism 4 is used to feed sewing thread to the needle bar 11 and also to take up the thread.

[0024] Specifically, such as Figure 2-4As shown, the displacement mechanism 2 includes a displacement assembly 22, a crank-connecting rod assembly 21, a guide slide 23, a guide slider 25, a needle bar connector 26, and a stop block 27. The crank-connecting rod assembly 21 is located at the output end of the displacement assembly 22. The needle bar connector 26 is located at the output end of the crank-connecting rod assembly 21, and its front end is sleeved on the outside of the needle bar 11. The stop block 27 is sleeved on the outside of the needle bar 11 and is located on both sides of the front end of the needle bar connector 26. The guide slide 23 is mounted on the frame 1, and the guide slider 25 is movably mounted on the guide slide 23. The guide groove 24 of 3 is also located at the rear end of the needle bar connector 26. The displacement component 22 is used to provide input power, and the crank connecting rod assembly 21 is used to transmit power to the needle bar connector 26. The power input by the displacement component 22 to the crank connecting rod assembly 21 causes the crank connecting rod assembly 21 to swing. As the crank connecting rod assembly 21 continues to transmit this swinging power to the needle bar connector 26, the guide slide 23 and the guide slider 25 cooperate to convert this power into power for raising and lowering the needle bar 11.

[0025] Furthermore, the displacement assembly 22 can be powered mechanically or manually. The displacement assembly 22 includes a displacement drive 221, a first synchronous pulley 222, a displacement drive shaft 223, a second synchronous pulley 224, a manual pulley 225, and a first synchronous belt 226. In this embodiment, the displacement drive 221 is a motor. The first synchronous pulley 222 is sleeved on the outside of the motor shaft. The displacement drive shaft 223 is mounted on the frame 1 through bearings. The manual pulley 225 and the second synchronous pulley 224 are sleeved on its outside. The first synchronous pulley 222 and the second synchronous pulley 224 are connected by the first synchronous belt 226. The crank connecting rod assembly 21 is located at the front end of the displacement drive shaft 223. In this way, the displacement drive 221 can drive the crank connecting rod assembly 21 to perform sewing work, or the manual pulley 225 can drive the crank connecting rod assembly 21 to perform needle fine-tuning work.

[0026] Furthermore, the crank-connecting rod assembly 21 includes a needle bar crank 211, a crank pin 212, and a needle bar connecting rod 213. The needle bar crank 211 is mounted on the displacement drive shaft 223, and the crank pin 212 is mounted on the needle bar crank 211. The upper end of the needle bar connecting rod 213 is connected to the needle bar crank 211 via the crank pin 212, and the lower end is connected to the needle bar 11 via the needle bar connector 26. The rotation of the displacement drive shaft 223 causes the needle bar crank 211 to swing, and the needle bar 11 is displaced through the needle bar connecting rod 213.

[0027] like Figure 2-4As shown, the thread take-up mechanism 4 includes a thread take-up drive 41, a thread take-up rod 42, and a guide tube 43. The thread take-up rod 42 is located at the output end of the thread take-up drive 41, and the guide tube 43 is located at the output end of the rotating mechanism 3 and is connected to the needle rod 11. The guide tube 43 is hollow inside to form a guide channel 44, and the needle rod 11 is hollow inside to form a thread passage 111. The needle is located below the thread passage 111. The sewing thread enters the guide channel 44 from the thread take-up hole 45 at the front end of the thread take-up rod 42, and then extends out through the thread passage 111 and enters the needle.

[0028] like Figure 2-4 As shown, the rotating mechanism 3 includes a rotating component 31 and a connecting component 32. The rotating component 31 is used to input rotational power to the needle rod 11, and the connecting component 32 is used to connect the guide tube 43 and the needle rod 11. Specifically, the rotating component 31 includes a rotating drive component 311, a third synchronous pulley 312, a fourth synchronous pulley 313, and a second synchronous belt 314. In this embodiment, the rotating drive component 311 is installed on the motor. The third synchronous pulley 312 is sleeved on the outside of the motor shaft. The fourth synchronous pulley 313 is installed on the frame 1 through a bearing. The second synchronous belt is sleeved on the outside of the third synchronous pulley 312 and the fourth synchronous pulley 313. The guide tube 43 or the needle rod 11 is connected to the fourth synchronous pulley 313, thereby realizing the rotation of the needle rod 11.

[0029] Furthermore, the connecting assembly 32 is used to adjust the connection position of the lead tube 43 and the needle bar 11. The connecting assembly 32 includes a mounting bracket 321 and a connecting joint 323. The mounting bracket 321 is rotatably mounted on the frame 1 and has a connecting slide 322. The connecting joint 323 is located at the connection between the lead tube 43 and the needle bar 11 and is movably mounted on the connecting slide 322 via a connecting slider 324 on the end side. The position of the connecting joint 323 on the mounting bracket 321 can be adjusted. After adjusting to a suitable position, the lead tube 43 and the needle bar 11 are then connected and fixed.

[0030] The foregoing has shown and described the basic principles, main features, and advantages of this technical solution. Those skilled in the art should understand that this technical solution is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this technical solution. Various changes and modifications can be made to this technical solution without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed technical solution. The scope of protection of this technical solution is defined by the appended claims and their equivalents.

Claims

1. A needle bar device for a template machine, characterized in that, include: A frame (1) is movably mounted on which a needle bar (11) is provided, and a needle tip is provided at the front end of the needle bar (11); A displacement mechanism (2) is mounted on the frame (1). The displacement mechanism (2) includes a displacement drive (221) and a needle bar connector (26) at its output end. The front end of the needle bar connector (26) is sleeved outside the needle bar (11). The displacement drive (221) drives the needle bar (11) to reciprocate vertically through the needle bar connector (26). A rotating mechanism (3) is provided on the frame (1). The rotating mechanism (3) includes a rotating drive (311). The needle bar (11) is provided at the output end of the rotating drive (311). The rotating drive (311) is used to drive the needle bar (11) to rotate around its axis.

2. The needle bar device of a template machine according to claim 1, characterized in that: It also includes a thread-taking mechanism (4), which is mounted on the frame (1) and comprises: Thread picking drive (41); A take-up lever (42), which is disposed at the output end of the take-up drive (41); and A guide tube (43) is disposed at the output end of the rotating mechanism (3) and connected to the needle rod (11); The wire tube (43) is hollow inside to form a wire channel (44), the needle rod (11) is hollow inside to form a thread channel (111), and the needle is located below the thread channel (111). The sewing thread enters the wire channel (44) from the thread take-up hole (45) at the front end of the thread take-up lever (42), and then extends through the thread channel (111) and enters the needle.

3. The needle bar device of a template machine according to claim 2, characterized in that, The displacement mechanism (2) further includes: A crank-connecting rod assembly (21) is disposed at the output end of the displacement drive (221); A guide slide (23), which is mounted on the frame (1) and has a guide groove (24); and The guide slider (25) is movably positioned within the guide groove (24); The needle bar connector (26) is connected in sequence to the output end of the crank connecting rod assembly (21) and the guide slider (25). With the cooperation of the guide slider (25) and the guide groove (24), the crank connecting rod assembly (21) is used to convert the rotation of the output end of the displacement drive (221) into the movement of the needle bar connector (26), thereby realizing the movement of the needle bar (11).

4. The needle bar device of a template machine according to claim 3, characterized in that: The displacement mechanism (2) further includes a displacement component (22), which comprises: Displacement drive component (221); Synchronous pulley 1 (222) is disposed at the output end of the displacement drive (221); A displacement drive shaft (223) is mounted on the frame (1); Synchronous pulley two (224) is mounted on the displacement drive shaft (223); A manual wheel (225) is mounted on the displacement drive shaft (223); and Synchronous belt one (226) is disposed outside synchronous pulley one (222) and synchronous pulley two (224); The displacement drive shaft (223) is connected to the crank connecting rod assembly (21) at its front end. The displacement drive component (221) or the manual wheel (225) is used to drive the crank connecting rod assembly (21) through the displacement drive shaft (223).

5. The needle bar device of a template machine according to claim 4, characterized in that, The crank-connecting rod assembly (21) includes: A needle crank (211) is mounted on the displacement drive shaft (223); A crank pin (212) is disposed on the needle bar crank (211); and The needle bar connecting rod (213) is connected at its upper end to the needle bar crank (211) via the crank pin (212) and at its lower end to the needle bar (11) via the needle bar connector (26). The displacement drive shaft (223) rotates to drive the needle bar crank (211) to swing, and the needle bar (11) is displaced through the needle bar connecting rod (213).

6. The needle bar device of a template machine according to claim 5, characterized in that: The displacement mechanism (2) also includes two stops (27), both of which are disposed on the needle bar (11) and located on both sides of the needle bar connector (26); The stop (27) works in conjunction with the needle bar connecting rod (213) to move the needle bar (11).

7. The needle bar device of a template machine according to claim 6, characterized in that: The rotating mechanism (3) further includes a rotating assembly (31), which comprises: Synchronous pulley three (312) is disposed at the output end of the rotation drive (311); Synchronous pulley four (313), which is mounted on the frame (1) via bearings; and Synchronous belt two (314) is sleeved on the outside of synchronous pulley three (312) and synchronous pulley four (313); The guide tube (43) is connected to the fourth synchronous pulley (313), and the fourth synchronous pulley (313) drives the needle rod (11) to rotate through the guide tube (43).

8. The needle bar device of a template machine according to claim 7, characterized in that: The rotating mechanism (3) further includes a connecting assembly (32) for adjusting the connection position of the guide tube (43) and the needle bar (11), which comprises: Mounting bracket (321), rotatably mounted on the frame (1), having a connecting slide (322); and A connecting connector (323) is provided at the connection between the wire tube (43) and the needle rod (11), and is movably mounted on the connecting slide (322) via a connecting slider (324) on the end side.

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