Differential regulation structure

Abstract

The utility model relates to the field of clothing processing especially, and relates to a differential adjustment structure. A differential adjustment structure, including drive assembly, first cloth feeding assembly, second cloth feeding assembly and adjustment assembly, first cloth feeding assembly includes main feeding tooth and first drive unit, and first drive unit is connected with drive assembly, and main feeding tooth is connected with first drive unit, second cloth feeding assembly includes difference feeding tooth and second drive unit, and second drive unit is connected with first drive unit, adjustment assembly is connected with second drive unit, second drive unit includes first connecting rod, adjustment frame and second connecting rod, and first connecting rod is detachably connected with adjustment frame, and adjustment frame and second connecting rod are connected, and adjustment assembly is connected with adjustment frame, and can drive adjustment frame to move to make first connecting rod connect at different positions of adjustment frame. Its advantage lies in, adjustment assembly adjusts differential ratio to make the differential adjustment structure and the application of its binding seam machine suitable for more fabric and technology.

Description

Technical Field

[0001] This utility model relates to the field of garment processing, and in particular to a differential adjustment structure. Background Technology

[0002] Coverstitching machines are widely used in the garment processing industry. They typically include a main feed dog and a differential feed dog, which can reciprocate along a preset trajectory to transport garment fabric. Since the garment fabric needs to be stretched or compressed during the production process, a differential ratio is required between the main feed dog and the differential feed dog. The differential ratio = differential feed amount / main feed amount.

[0003] However, the existing differential ratio adjustment of covert sewing machines only has one setting, and the adjustment range is relatively small, which cannot meet the increasingly complex garment processing requirements. Moreover, the adjustment requires the use of a fork structure, which is too complex and costly, and is also a major cause of noise in the machine. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a differential adjustment structure.

[0005] A differential adjustment structure, applied to a coverstitch sewing machine, includes: a drive assembly; a first feed assembly including a main feed dog and a first transmission unit, the first transmission unit being connected to the drive assembly, and the main feed dog being connected to the first transmission unit; a second feed assembly including a differential feed dog and a second transmission unit, the second transmission unit being connected to the first transmission unit, and the differential feed dog being connected to the second transmission unit; and an adjustment assembly connected to the second transmission unit; wherein the second transmission unit includes a first connecting rod, an adjustment frame, and a second connecting rod, the first connecting rod being detachably connected to the adjustment frame, the adjustment frame being connected to the second connecting rod, the second connecting rod being used to drive the differential feed dog to move, and the adjustment assembly being connected to the adjustment frame and capable of driving the adjustment frame to move, so that the first connecting rod is connected to different positions of the adjustment frame.

[0006] In this configuration, the drive assembly, connected to the first transmission unit, drives the first transmission unit to move, which in turn drives the main feed dog. The second transmission unit, connected to the first transmission unit, is driven in response to the first transmission unit and drives the differential feed dog. The differential feed dog and the main feed dog are used to transport the garment fabric, and the differential ratio between them allows the garment fabric to be stretched or compressed. The first connecting rod and the adjusting frame are detachably connected, so the first connecting rod can be connected to different positions on the adjusting frame. When its connection position with the adjusting frame changes, the range of its movement path for the differential feed dog also changes, that is, the feed amount of the differential feed dog changes. Since the differential ratio = differential feed amount / main feed amount, the adjusting assembly adjusts the adjusting frame to connect the first connecting rod to different positions on the adjusting frame, thereby adjusting the differential ratio. This allows the differential adjustment structure and the covertsew machine it is used to be suitable for more fabrics and processes. Moreover, the above structure is simple, stable, low-cost, and can also reduce noise.

[0007] In one embodiment, the adjusting frame has an adjusting groove, a portion of the first connecting rod can extend into the adjusting groove and move along the length direction of the adjusting groove, and is fixedly connected to any position within the adjusting groove.

[0008] In one embodiment, the end of the first connecting rod near the adjusting frame is provided with a connecting shaft, the connecting shaft extending into the adjusting groove, and the adjusting groove is configured as an arc-shaped groove.

[0009] In one embodiment, the second transmission unit further includes a fixed shaft, a differential actuator shaft, and a differential gear frame. The fixed shaft is fixedly connected to the outer housing. The adjusting frame is sleeved on the outer periphery of the fixed shaft and can rotate relative to the fixed shaft. One end of the second connecting rod is rotatably connected to the adjusting frame, and the other end is connected to the differential actuator shaft. The differential actuator shaft is connected to the differential gear frame, and the differential gear frame is provided with the differential tooth feeder.

[0010] In one embodiment, the adjustment frame includes a slotted section, a rotating section and an adjustment section connected in sequence. The slotted section has an adjustment slot, the rotating section is sleeved on the fixed shaft, and the adjustment section is connected to the adjustment assembly.

[0011] In one embodiment, a sliding seat is constructed on the adjusting section, the sliding seat is movable along the length direction of the adjusting section, and a first connecting shaft and a second connecting shaft are respectively provided on both sides of the sliding seat. The first connecting shaft is rotatably connected to the adjusting assembly, and the second connecting shaft is rotatably connected to the second connecting rod.

[0012] In one embodiment, the adjustment assembly includes a wrench, an adjustment crank, and a connecting plate. The wrench is rotatably connected to the outer housing and connected to the adjustment crank. The adjustment crank is connected to the connecting plate, and the connecting plate is connected to the adjustment frame.

[0013] In one embodiment, the adjustment assembly further includes an adjustment plate connected to the outer housing and corresponding to the wrench, the adjustment plate being provided with angle scale.

[0014] In one embodiment, the first transmission unit includes an active drive shaft and an active tooth frame. The active drive shaft is connected to the drive assembly and the active tooth frame, and drives the main tooth feeder to move through the active tooth frame. The first connecting rod is sleeved on the active drive shaft.

[0015] In one embodiment, the drive assembly includes a main shaft and a fabric feeder, the main shaft being connected to the fabric feeder and the end connected to the fabric feeder being eccentrically positioned, and the fabric feeder being connected to the first transmission unit.

[0016] Compared to existing technologies, this invention features a detachable connection between the first connecting rod and the adjusting frame. The first connecting rod can be connected to different positions on the adjusting frame. When its connection position with the adjusting frame changes, the range of motion of the differential feed dog also changes, that is, the feed amount of the differential feed dog changes. Since the differential ratio = differential feed amount / main feed amount, the adjusting component adjusts the adjusting frame to connect the first connecting rod to different positions on the adjusting frame, thereby adjusting the differential ratio. This makes the differential adjustment structure and the covertsew machine it is used in suitable for more fabrics and processes. Moreover, the above structure is simple, stable, low in cost, and can also reduce noise. Attached Figure Description

[0017] Figure 1 A schematic diagram of one embodiment of the differential adjustment structure provided by this utility model;

[0018] Figure 2 A schematic diagram of another angle of one embodiment of the differential adjustment structure provided by this utility model;

[0019] Figure 3 A partial structural schematic diagram of one embodiment of the differential adjustment structure provided by this utility model;

[0020] Figure 4 A schematic diagram of one embodiment of the second fabric feeding assembly provided by this utility model;

[0021] Figure 5 A schematic diagram of one embodiment of the first fabric feeding assembly provided by this utility model.

[0022] The symbols in the diagram represent the following meanings:

[0023] 100. Differential adjustment structure; 10. Drive assembly; 11. Main shaft; 12. Fabric feed frame; 20. First fabric feed assembly; 21. First transmission unit; 211. Main drive shaft; 212. Active toothed bracket; 22. Main feed tooth; 30. Second fabric feed assembly; 31. Differential feed tooth; 32. Second transmission unit; 321. First connecting rod; 3211. Mating shaft; 322. Adjusting frame; 3221. Slotted section; 3222. Rotating section; 3223. Adjusting section; 3224. Sliding seat; 3225. First connecting shaft; 3226. Adjusting groove; 323. Second connecting rod; 324. Fixed shaft; 325. Differential drive shaft; 326. Differential toothed bracket; 40. Adjustment assembly; 41. Wrench; 42. Adjusting crank; 43. Connecting plate; 44. Adjusting plate; 50. Machine housing. Detailed Implementation

[0024] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0025] It should be noted that when a mechanism is referred to as being "fixed to" or "set on" another mechanism, it can be directly on the other mechanism or there may be an intervening mechanism. When a mechanism is considered to be "connected to" another mechanism, it can be directly connected to the other mechanism or there may be an intervening mechanism. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application's specification are for illustrative purposes only and do not represent the only possible implementation.

[0026] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0027] In this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature and the second feature are in indirect contact through an intermediate medium. Furthermore, "above," "over," and "on top" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0028] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in this application is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. The term "and / or" as used in this application includes any and all combinations of one or more of the associated listed items.

[0029] This utility model provides a differential adjustment structure 100, which is applied to a cover stitch machine. The adjustment component 40 drives the adjustment frame 322 to move, so that the first connecting rod 321 is connected to different positions of the adjustment frame 322, thereby achieving a larger differential ratio.

[0030] Please see Figures 1-5 A differential adjustment structure 100, applied to a coverstitch sewing machine, includes a drive assembly 10, a first feed assembly 20, a second feed assembly 30, and an adjustment assembly 40. The first feed assembly 20 includes a main feed dog 22 and a first transmission unit 21, the first transmission unit 21 being connected to the drive assembly 10, and the main feed dog 22 being connected to the first transmission unit 21. The second feed assembly 30 includes a differential feed dog 31 and a second transmission unit 32, the second transmission unit 32 being connected to the first transmission unit 21, and the differential feed dog 31 being connected to the second transmission unit 32. The first link 32 is connected to the second transmission unit 32; the second transmission unit 32 includes a first link 321, an adjustment frame 322, and a second link 323. The first link 321 is detachably connected to the adjustment frame 322, and the adjustment frame 322 is connected to the second link 323. The second link 323 is used to drive the differential feed tooth 31 to move. The adjustment component 40 is connected to the adjustment frame 322 and can drive the adjustment frame 322 to move so that the first link 321 is connected to different positions of the adjustment frame 322.

[0031] Thus, the drive assembly 10 drives the first transmission unit 21 to move through its connection with the first transmission unit 21, and drives the main feed tooth 22 to move. The second transmission unit 32 is connected to the first transmission unit 21 and is driven in response to the first transmission unit 21, driving the differential feed tooth 31 to move. The differential feed tooth 31 and the main feed tooth 22 are used to transport the garment fabric, and the differential ratio between them allows the garment fabric to be stretched or compressed. The first connecting rod 321 and the adjusting frame 322 are detachably connected, so the first connecting rod 321 can be connected to different positions of the adjusting frame 322. When its connection position with the adjusting frame 322 changes, the range of the movement path of the differential feed tooth 31 will also change, that is, the feeding amount of the differential feed tooth 31 will change. Since the differential ratio = differential feed amount / main feed amount, the adjusting component 40 adjusts the adjusting frame 322 to connect the first connecting rod 321 to different positions of the adjusting frame 322, thereby adjusting the differential ratio so that the differential adjusting structure 100 and the covertsew machine it is used in are suitable for more fabrics and processes. Moreover, the above structure is simple and stable, low in cost, and can also reduce noise.

[0032] It needs to be explained that, assuming the original differential ratio range is AB; if the position of the first link 321 connected to the adjusting frame 322 is adjusted downwards, the feed rate remains the same compared to the original setting, thus increasing the swing of the adjusting frame 322. This leads to a larger range of motion for the second link 323 and the differential feed tooth 31, and the differential ratio of the device becomes CD (C > A, D > C). Conversely, when the position of the first link 321 connected to the adjusting frame 322 is adjusted upwards, the swing of the adjusting frame 322 decreases, and the differential ratio of the device becomes EF (E < A, F < B). Therefore, it can be understood that by changing the connection position of the first link 321 and the adjusting frame 322, the range of the connection position can be from the top to the bottom, resulting in a differential ratio range of ED (greater than the original AB).

[0033] Furthermore, the adjusting frame 322 has an adjusting groove 3226, and a portion of the first connecting rod 321 can extend into the adjusting groove 3226 and move along the length of the adjusting groove 3226, and is fixedly connected to any position within the adjusting groove 3226. In this way, the first connecting rod 321 can be adjusted to multiple positions through its connection with the adjusting groove 3226, resulting in a simple structure and convenient adjustment.

[0034] Understandably, in other embodiments, multiple through holes may be provided on the adjustment frame 322, allowing the first connecting rod 321 to optionally connect to any of the through holes, thereby completing the adjustment of the connection position, and not limited to the above-described scheme of adjustment groove 3226.

[0035] Specifically, the end of the first connecting rod 321 near the adjusting frame 322 is equipped with a mating shaft 3211, which extends into the adjusting groove 3226, which is an arc-shaped groove. Thus, the groove wall of the arc-shaped adjusting groove 3226 guides the movement direction of the mating shaft 3211, facilitating the rotation of the first connecting rod 321 with the mating shaft 3211 within the adjusting groove 3226. In this embodiment, the mating shaft 3211 is a bolt, with a threaded hole on the first connecting rod 321. The bolt's engagement with the threaded hole allows the bolt head to press against the adjusting frame 322, thereby achieving a fixed connection. Preferably, a washer is provided between the bolt head and the adjusting frame 322 to prevent structural damage.

[0036] The second transmission unit 32 also includes a fixed shaft 324, a differential actuator shaft 325, and a differential gear frame 326. The fixed shaft 324 is fixedly connected to the outer housing 50. The adjusting bracket 322 is sleeved on the outer periphery of the fixed shaft 324 and can rotate relative to the fixed shaft 324. One end of the second connecting rod 323 is rotatably connected to the adjusting bracket 322, and the other end is connected to the differential actuator shaft 325. The differential actuator shaft 325 is connected to the differential gear frame 326, and the differential gear frame 326 is provided with a differential feed tooth 31. Thus, the fixed shaft 324 is connected to the outer housing 50 and its position remains fixed. The adjusting bracket 322 is sleeved on the fixed shaft 324 and can rotate relative to the fixed shaft 324 around the axis of the fixed shaft 324. The differential actuator shaft 325 is connected to the differential gear frame 326. The first link 321 is connected to the first transmission unit 21. When the first transmission unit 21 moves in response to the drive assembly 10, the first link 321 moves synchronously and drives the adjustment frame 322 to move through contact with the adjustment groove 3226. The adjustment frame 322 is connected to the second link 323 and drives the second link 323 to move. The second link 323 drives the differential drive shaft 325 to move, and then drives the differential tooth to move through the differential tooth frame 326, thus realizing the operation process of the second transmission unit 32.

[0037] Specifically, the adjusting frame 322 includes a slotted section 3221, a rotating section 3222, and an adjusting section 3223 connected in sequence. The slotted section 3221 has an adjusting groove 3226. The rotating section 3222 is fitted onto the fixed shaft 324, and the adjusting section 3223 is connected to the adjusting assembly 40. Thus, the slotting on the slotted section 3221 does not affect the structural strength of the rotating section 3222 and the adjusting section 3223. The rotating section 3222, connected to the fixed shaft 324, guides the rotation direction of the slotted section 3221 and the adjusting section 3223.

[0038] Furthermore, a sliding seat 3224 is constructed on the adjusting section 3223. The sliding seat 3224 can move along the length of the adjusting section 3223. A first connecting shaft 3225 and a second connecting shaft are respectively provided on both sides of the sliding seat 3224. The first connecting shaft 3225 is rotatably connected to the adjusting assembly 40, and the second connecting shaft is rotatably connected to the second connecting rod 323. In this way, the sliding seat 3224 can slide in response to the action of the adjusting section 3223. The adjusting assembly 40 drives the sliding seat 3224 through the first connecting shaft 3225, and then drives the adjusting frame 322 to rotate through the sliding seat 3224, thereby realizing the adjustment.

[0039] The adjustment assembly 40 includes a wrench 41, an adjustment crank 42, and a connecting plate 43. The wrench 41 is rotatably connected to the outer housing 50 and is connected to the adjustment crank 42. The adjustment crank 42 is connected to the connecting plate 43, and the connecting plate 43 is connected to the adjustment frame 322. Thus, the user can move the adjustment crank 42 by operating the wrench 41, and the adjustment crank 42 drives the adjustment frame 322 through the connecting plate 43.

[0040] The adjustment assembly 40 also includes an adjustment plate 44, which is connected to the outer housing 50 and correspondingly positioned with a wrench 41. The adjustment plate 44 has an angle scale. Thus, the wrench 41 can be used to precisely adjust the differential ratio by referring to the angle scale on the adjustment plate 44.

[0041] The first transmission unit 21 includes a main drive shaft 211 and a drive tooth holder 212. The main drive shaft 211 is connected to the drive assembly 10 and the drive tooth holder 212, and drives the main tooth feeder 22 to move via the drive tooth holder 212. A first connecting rod 321 is sleeved on the main drive shaft 211. Thus, the main drive shaft 211 is connected to the drive assembly 10, and as the drive assembly 10 moves, the first connecting rod 321, sleeved on the main drive shaft 211, moves along with the main drive shaft 211.

[0042] The drive assembly 10 includes a main shaft 11 and a fabric feeding frame 12. The main shaft 11 is connected to the fabric feeding frame 12, and the end connected to the fabric feeding frame 12 is eccentrically positioned. The fabric feeding frame 12 is connected to the first transmission unit 21. Thus, the main shaft 11 drives the fabric feeding frame 12 to move laterally through the eccentrically positioned end, thereby driving the first fabric feeding assembly 20 and the second fabric feeding assembly 30 to move.

[0043] Specifically, the aforementioned active drive shaft 211 is connected to the end of the fabric feeding frame 12, and the fabric feeding frame 12 is also provided with a hollow, through which the differential drive shaft 325 passes, and the second connecting rod 323 drives the differential drive shaft 325 to move in the hollow.

[0044] Compared to existing technologies, this utility model features a detachable connection between the first connecting rod 321 and the adjusting frame 322. The first connecting rod 321 can be connected to different positions on the adjusting frame 322. When its connection position with the adjusting frame 322 changes, the range of motion path of the differential feed tooth 31 will also change, that is, the feeding amount of the differential feed tooth 31 will change. Since the differential ratio = differential feed amount / main feed amount, the adjusting component 40 adjusts the adjusting frame 322 to connect the first connecting rod 321 to different positions on the adjusting frame 322, thereby adjusting the differential ratio. This makes the differential adjusting structure 100 and the covertsew machine it is used in suitable for more fabrics and processes. Moreover, the above structure is simple and stable, low in cost, and can also reduce noise.

[0045] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0046] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A differential adjustment structure applied to a coverstitch sewing machine, characterized in that, include: Driver component (10); The first feeding assembly (20) includes a main feed tooth (22) and a first transmission unit (21). The first transmission unit (21) is connected to the drive assembly (10), and the main feed tooth (22) is connected to the first transmission unit (21). The second fabric feeding assembly (30) includes a differential feed tooth (31) and a second transmission unit (32), wherein the second transmission unit (32) is connected to the first transmission unit (21), and the differential feed tooth (31) is connected to the second transmission unit (32); The adjustment component (40) is connected to the second transmission unit (32); The second transmission unit (32) includes a first connecting rod (321), an adjusting frame (322), and a second connecting rod (323). The first connecting rod (321) is detachably connected to the adjusting frame (322). The adjusting frame (322) is connected to the second connecting rod (323). The second connecting rod (323) is used to drive the differential feed tooth (31) to move. The adjusting component (40) is connected to the adjusting frame (322) and can drive the adjusting frame (322) to move so that the first connecting rod (321) is connected to different positions of the adjusting frame (322).

2. The differential adjustment structure according to claim 1, characterized in that, The adjustment frame (322) has an adjustment groove (3226), and a portion of the first connecting rod (321) can extend into the adjustment groove (3226) and move along the length direction of the adjustment groove (3226), and is fixedly connected to any position within the adjustment groove (3226).

3. The differential adjustment structure according to claim 2, characterized in that, The first connecting rod (321) has a mating shaft (3211) at one end near the adjusting frame (322), the mating shaft (3211) extends into the adjusting groove (3226), and the adjusting groove (3226) is set as an arc groove.

4. The differential adjustment structure according to claim 1, characterized in that, The second transmission unit (32) further includes a fixed shaft (324), a differential actuator shaft (325), and a differential gear frame (326). The fixed shaft (324) is fixedly connected to the outer housing (50). The adjusting frame (322) is sleeved on the outer periphery of the fixed shaft (324) and can rotate relative to the fixed shaft (324). One end of the second connecting rod (323) is rotatably connected to the adjusting frame (322), and the other end is connected to the differential actuator shaft (325). The differential actuator shaft (325) is connected to the differential gear frame (326), and the differential gear frame (326) is provided with the differential feed tooth (31).

5. The differential adjustment structure according to claim 4, characterized in that, The adjustment frame (322) includes a slotted section (3221), a rotating section (3222) and an adjustment section (3223) connected in sequence. The slotted section (3221) has an adjustment groove (3226). The rotating section (3222) is sleeved on the fixed shaft (324). The adjustment section (3223) is connected to the adjustment assembly (40).

6. The differential adjustment structure according to claim 5, characterized in that, The adjustment section (3223) is provided with a sliding seat (3224), which can move along the length of the adjustment section (3223). A first connecting shaft (3225) and a second connecting shaft are respectively provided on both sides of the sliding seat (3224). The first connecting shaft (3225) is rotatably connected to the adjustment component (40), and the second connecting shaft is rotatably connected to the second connecting rod (323).

7. The differential adjustment structure according to claim 1, characterized in that, The adjustment assembly (40) includes a wrench (41), an adjustment crank (42), and a connecting plate (43). The wrench (41) is rotatably connected to the outer housing (50) and connected to the adjustment crank (42). The adjustment crank (42) is connected to the connecting plate (43), and the connecting plate (43) is connected to the adjustment frame (322).

8. The differential adjustment structure according to claim 7, characterized in that, The adjustment assembly (40) also includes an adjustment plate (44), which is connected to the outer housing (50) and is correspondingly set with the wrench (41). The adjustment plate (44) is provided with an angle scale.

9. The differential adjustment structure according to claim 1, characterized in that, The first transmission unit (21) includes a main drive shaft (211) and an active tooth frame (212). The main drive shaft (211) is connected to the drive assembly (10) and the active tooth frame (212), and drives the main tooth feeder (22) to transport through the active tooth frame (212). The first connecting rod (321) is sleeved on the main drive shaft (211).

10. The differential adjustment structure according to claim 1, characterized in that, The drive assembly (10) includes a main shaft (11) and a fabric feeder (12). The main shaft (11) is connected to the fabric feeder (12), and the end connected to the fabric feeder (12) is eccentrically arranged. The fabric feeder (12) is connected to the first transmission unit (21).

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