Wire shifting mechanism

Abstract

The utility model relates to the technical field of sewing equipment, and discloses a thread shifting mechanism which comprises a thread shifting connecting plate which is rotatably arranged on a machine frame through a pin shaft and connected with a power mechanism so that the power mechanism can drive the thread shifting connecting plate to rotate around the pin shaft relative to the machine frame. The connecting end of the shifting rod is rotatably connected with the thread shifting connecting plate, and the free end of the shifting rod is provided with a thread shifting rod assembly used for shifting a thread; and the sliding groove clamping jaw is arranged below the wire shifting connecting plate and is rotatably arranged on the rack, the shifting rod is installed in the sliding groove clamping jaw in a sliding mode, and the sliding groove clamping jaw is used for limiting the moving direction of the shifting rod. The thread shifting connecting plate, the shifting rod and the sliding groove clamping jaw form a crank sliding block mechanism, the sliding groove clamping jaw is arranged below the thread shifting connecting plate, the thread shifting mechanism shifts threads up and down, compared with existing left-right thread shifting, the movement track of the shifting rod is effectively restrained, the movement range of the shifting rod in the horizontal direction is reduced, the movement space needed by the thread shifting mechanism is further reduced, and the thread shifting mechanism is convenient to use. And the space utilization rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing equipment, and more specifically, to a thread deflecting mechanism. Background Art

[0002] The existing thread deflecting mechanism deflects threads left and right, and requires a large movement space in the horizontal direction, which is prone to movement interference with newly added auxiliary equipment on the production line and difficult to meet the installation requirements of the newly added auxiliary equipment on the production line.

[0003] In summary, how to reduce the movement space required by the thread deflecting mechanism is an urgent problem to be solved by those skilled in the art at present. Content of the Utility Model

[0004] In view of this, the purpose of the utility model is to provide a thread deflecting mechanism that deflects threads up and down, reduces the movement space required by the thread deflecting mechanism, and facilitates the setting of newly added auxiliary equipment on the production line.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A thread deflecting mechanism, comprising:

[0007] A thread deflecting connecting plate, which is rotatably arranged on a frame through a pin shaft and is connected with a power mechanism, so that the power mechanism drives the thread deflecting connecting plate to rotate relative to the frame around the pin shaft;

[0008] A deflecting rod, whose connecting end is rotatably connected with the thread deflecting connecting plate, and whose free end is provided with a thread deflecting rod assembly for deflecting a sewing thread;

[0009] A chute claw arranged below the thread deflecting connecting plate, which is rotatably arranged on the frame, and the deflecting rod is slidably installed in the chute claw, and the chute claw is used to limit the movement direction of the deflecting rod.

[0010] Preferably, the thread deflecting connecting plate is an L-shaped plate, and one side of the L-shaped plate is a horizontal side extending in the horizontal direction. The pin shaft and the connecting pin for connecting the thread deflecting connecting plate and the deflecting rod are both arranged on the horizontal side, and the axis of the chute claw passes through the midpoint of the horizontal side.

[0011] Preferably, the chute claw is arranged on the frame through a limit seat, the chute claw is rotatably connected with the limit seat through a bearing, and the limit seat is detachably connected with the frame.

[0012] Preferably, the limit seat is slidably connected with the frame, and a locking member is arranged between the limit seat and the frame, and the locking member is used to fix the relative positions of the limit seat and the frame.

[0013] Preferably, the wire pushing rod assembly includes:

[0014] A wire pushing mounting seat, one end of which is detachably connected to the free end of the pushing rod, and the other end is provided with a wire hole for inserting a wire pushing wire, and the wire hole is arranged through the radial direction of the wire pushing mounting seat;

[0015] A pressing positioning sleeve, which is detachably sleeved outside the wire pushing mounting seat and is used to press the wire pushing wire on the positioning step surface of the wire pushing mounting seat.

[0016] Preferably, the pressing positioning sleeve is provided with an internal thread, and the wire pushing mounting seat is provided with an external thread that matches the internal thread.

[0017] Preferably, a connection hole is provided in the center of the pressing positioning sleeve, and a threaded hole is provided at the end of the wire pushing mounting seat. After the set screw passes through the connection hole, it is connected to the threaded hole.

[0018] Preferably, the wire pushing rod assembly includes a wire pushing mounting seat for detachably connecting to the pushing rod. The wire pushing mounting seat is provided with a wire hole and a limiting hole that are both used for inserting a wire pushing wire. The wire hole is arranged through the radial direction of the wire pushing mounting seat, and the wire hole and the limiting hole are arranged along the axial direction of the wire pushing mounting seat, so that the wire pushing wire is bent and inserted into the limiting hole after passing through the wire hole.

[0019] In the wire pushing mechanism provided by the present invention, the wire pushing connecting plate, the pushing rod and the chute claw constitute a crank-slider mechanism. The chute claw is arranged below the wire pushing connecting plate, effectively restricting the movement track of the pushing rod, reducing the moving range of the pushing rod in the horizontal direction, changing the wire pushing of the wire pushing mechanism from left and right to up and down, thereby reducing the required movement space of the wire pushing mechanism and facilitating the setting of additional auxiliary equipment on the production line. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained according to the provided drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a specific embodiment of the wire pushing mechanism provided by the present invention;

[0022] Figure 2 It is an exploded view of the wire pushing mechanism;

[0023] Figure 3 It is a schematic principle diagram of the wire pushing mechanism;

[0024] Figure 4 It is a structural schematic diagram of the dialing connection board;

[0025] Figure 5 is a structural schematic diagram of a claw assembly;

[0026] Figure 6 It is a structural schematic diagram of the wire-pushing lever assembly.

[0027] Figures 1-6 middle:

[0028] 1-wire-pulling connecting plate; 11-fixing hole; 2-connecting pin; 3-pushing rod; 41-slideway claw; 42-circlip; 43-gasket; 44-needle bearing; 45-bearing set screw; 46-limiting seat; 51-wire-pulling mounting seat; 52-wire-pulling wire; 53-tightening ring; 54-compression positioning sleeve; 55-tightening screw. DETAILED DESCRIPTION

[0029] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0030] The core of the utility model is to provide a wire-digging mechanism. The wire-digging mechanism can divert the wires up and down, thus reducing the movement space required by the wire-digging mechanism and facilitating the setting of new auxiliary equipment on the production line.

[0031] The wire dialing mechanism provided by the utility model comprises:

[0032] The wire-push connecting plate 1 is rotatably arranged on the frame through the pin shaft 2 and is connected to the power mechanism so that the power mechanism drives the wire-push connecting plate 1 to rotate around the pin shaft relative to the frame;

[0033] A shifting rod 3, whose connecting end is rotatably connected to the thread shifting connecting plate 1, and whose free end is provided with a thread shifting rod assembly for shifting the suture;

[0034] The slide groove claw 41 disposed below the wire-pulling connecting plate 1 is rotatably disposed on the frame, and the shifting rod 3 is slidably installed in the slide groove claw 41 . The slide groove claw 41 is used to limit the movement direction of the shifting rod 3 .

[0035] The wire-shifting connecting plate 1, the shifting rod 3 and the sliding groove claw 41 constitute a crank slider mechanism, wherein the wire-shifting connecting plate 1 is connected to the power mechanism and can be regarded as the active part of the crank slider mechanism; the shifting rod 3 is the driven part of the crank slider mechanism; the sliding groove claw 41 is slidably connected to the shifting rod 3 and is a slider structure that limits the movement direction of the shifting rod 3.

[0036] Please refer to Figure 1 , a pin shaft is installed in the fixing hole 11 of the wire-pulling connecting plate 1. The wire-pulling connecting plate 1 is rotatably arranged on the frame through the pin shaft. A connecting pin 2 is arranged in the connecting hole of the wire-pulling connecting plate 1. The wire-pulling connecting plate 1 is rotatably connected to the power mechanism and the lever 3 through the connecting pin 2;

[0037] Driven by the power mechanism, the wire-pulling connecting plate 1 can rotate relative to the frame around the pin shaft, drive the lever 3 to rotate relative to the wire-pulling connecting plate 1, and at the same time, the lever 3 slides relative to the chute claw 41.

[0038] Of course, the power mechanism can also drive the pin shaft of the wire-pulling connecting plate 1 to rotate, so as to drive the wire-pulling connecting plate 1 to rotate relative to the frame.

[0039] In order to reduce the moving range of the lever 3 in the horizontal direction, the chute claw 41 is arranged below the wire-pulling connecting plate 1, so that the lever 3 extends vertically as a whole. The connecting end at the top of the lever 3 is rotatably connected to the wire-pulling connecting plate 1 through the connecting pin 2, and the free end at the bottom is provided with a wire-pulling rod assembly. The specific structure, size, connection method, etc. of the wire-pulling rod assembly can be determined by referring to the wire-pulling mechanism in the prior art.

[0040] The chute claw 41 is slidably connected to the lever 3 and is used to limit the sliding of the lever 3 along the extending direction of the chute claw 41; at the same time, the chute claw 41 is rotatably connected to the frame, so that when the lever 3 rotates relative to the connection part with the wire-pulling connecting plate 1, the chute claw 41 can rotate together with the lever 3.

[0041] Therefore, the chute claw 41 is connected to the lever 3 through a sliding pair and is connected to the frame through a rotating pair. The chute claw 41 can be directly rotatably connected to the frame, or can be rotatably arranged on the limit seat 46 and then connected to the frame through the limit seat 46.

[0042] Preferably, in order to avoid modifying the frame, the chute claw 41 is usually arranged on the frame through the limit seat 46. The chute claw 41 is rotatably connected to the limit seat 46 through a bearing, and the limit seat 46 is detachably connected to the frame.

[0043] For example, please refer to Figure 2 and Figure 5 , a snap ring 42 is installed on the chute claw 41. The chute claw 41 is sleeved in the needle roller bearing 44 to form a claw assembly. The claw assembly is connected to the limit seat 46 through a gasket 43 and a bearing set screw 45.

[0044] When the power mechanism drives the wire-pulling connecting plate 1 to drive the lever 3 to rotate upward, since the height of the chute claw 41 relative to the frame remains unchanged, the lever 3 slides upward relative to the chute claw 41; conversely, when the power mechanism drives the wire-pulling connecting plate 1 to drive the lever 3 to rotate downward, the lever 3 slides downward relative to the chute claw 41, thereby driving the wire-pulling rod assembly provided on the lever 3 to move up and down.

[0045] In this embodiment, the wire-pulling connecting plate 1, the lever 3 and the chute claw 41 form a crank-slider mechanism. The chute claw 41 is provided below the wire-pulling connecting plate 1, effectively restricting the movement trajectory of the lever 3, reducing the movement range of the lever 3 in the horizontal direction, changing the wire-pulling mechanism from left-right wire-pulling to up-down wire-pulling, and further reducing the required movement space of the wire-pulling mechanism, facilitating the setting of new auxiliary equipment on the production line.

[0046] The distance from the connection point of the wire-pulling connecting plate 1 and the lever 3 to the rotating shaft of the wire-pulling connecting plate 1, the horizontal distance from the connection point of the wire-pulling connecting plate 1 and the lever 3 to the chute claw 41, and the vertical distance from the connection point of the wire-pulling connecting plate 1 and the lever 3 to the chute claw 41 will all affect the movement trajectory of the lever 3, and thus affect the movement trajectory of the wire-pulling rod assembly.

[0047] On the basis of the above embodiment, in order to further reduce the required horizontal space of the wire-pulling mechanism, the wire-pulling connecting plate 1 can be set as an L-shaped plate, and one side of the L-shaped plate is a horizontal side extending in the horizontal direction. The pin shaft and the connection pin 2 for connecting the wire-pulling connecting plate 1 and the lever 3 are both provided on the horizontal side, and the axis of the chute claw 41 passes through the midpoint of the horizontal side.

[0048] Please refer to Figure 1 , one side of the wire-pulling connecting plate 1 is a horizontal side, and the other side is inclined upward to reserve enough installation space for the power mechanism;

[0049] The chute claw 41 is located on the center line of the horizontal side of the wire-pulling connecting plate 1. On the premise that the sizes of the wire-pulling connecting plate 1, the lever 3 and the chute claw 41 are certain, the required horizontal space of the wire-pulling mechanism is the smallest, effectively reducing the required movement space of the wire-pulling mechanism, which is beneficial to improving the space utilization rate of the production line.

[0050] On the basis of the above embodiment, the structure of the wire-pulling rod assembly is defined. The wire-pulling rod assembly includes:

[0051] A wire-pulling mounting seat 51, one end of which is detachably connected to the free end of the lever 3, and the other end is provided with a wire hole for inserting a wire-pulling wire 52. The wire hole penetrates the radial direction of the wire-pulling mounting seat 51;

[0052] A pressing positioning sleeve 54, detachably sleeved outside the wire-pulling mounting seat 51, for pressing the wire-pulling wire 52 against the positioning step surface of the wire-pulling mounting seat 51.

[0053] Among them, the wire-pulling mounting seat 51 is used to mount the wire-pulling steel wire 52 and connect the wire-pulling rod assembly and the shifting lever 3. The wire-pulling mounting seat 51 and the shifting lever 3 can be detachably connected by common connecting parts such as fastening bolts and connecting pins;

[0054] The wire-pulling mounting seat 51 includes a connecting part for connecting with the shifting lever 3 and a mounting part for mounting the wire-pulling steel wire 52. The outer diameter of the mounting part is smaller than that of the connecting part, so as to form a positioning step surface between the connecting part and the mounting part. The positioning step surface is used to cooperate with the pressing positioning sleeve 54 to press the wire-pulling steel wire 52.

[0055] In order to effectively press the wire-pulling steel wire 52, a set screw ring 53 is usually provided between the mounting part and the pressing positioning sleeve 54. The set screw ring 53 is mostly set as a rubber ring, etc., so as to prevent the mounting part and the pressing positioning sleeve 54 from being only in line contact, resulting in poor pressing stability.

[0056] The mounting part is provided with a steel wire hole penetrating along the radial direction. The wire-pulling steel wire 52 is inserted into the steel wire hole. By adjusting the length of the inserted wire-pulling steel wire 52, the movement track of the wire-pulling rod assembly can be adjusted to meet the wire-pulling requirements of different wire-pulling heights.

[0057] The pressing positioning sleeve 54 is detachably connected to the wire-pulling mounting seat 51. It can be that the pressing positioning sleeve 54 is provided with internal threads, and the outer peripheral surface of the mounting part of the wire-pulling mounting seat 51 is provided with external threads matching the internal threads, and the pressing positioning sleeve 54 is threadedly connected to the wire-pulling mounting seat 51;

[0058] It can also be that a connecting hole is provided in the center of the pressing positioning sleeve 54, and a threaded hole is provided at the end of the wire-pulling mounting seat 51. The set screw 55 passes through the connecting hole and is connected to the threaded hole, as Figure 6 shown.

[0059] In this embodiment, the wire-pulling steel wire 52 is pressed on the positioning step surface of the wire-pulling mounting seat 51 by the pressing positioning sleeve 54. The structure is simple, convenient for assembly, and convenient for replacing the wire-pulling steel wire 52. By changing the relative position between the wire-pulling steel wire 52 and the steel wire hole, or replacing the wire-pulling steel wire 52 with different lengths, the movement track of the wire-pulling rod assembly can be changed to meet the wire-pulling requirements of different wire-pulling heights.

[0060] Of course, in order to adjust the movement track of the wire-pulling rod assembly, a limit seat 46 can also be set to be slidably connected to the frame, and a locking part is provided between the limit seat 46 and the frame to fix the relative position between the limit seat 46 and the frame by using the locking part. By adjusting the position of the chute claw 41 relative to the wire-pulling connecting plate 1, the movement tracks of the shifting lever 3 and the wire-pulling rod assembly are adjusted.

[0061] Preferably, in order to simplify the structure of the wire-pulling rod assembly, the wire-pulling rod assembly may be provided with a wire-pulling mounting seat 51 for detachably connecting to the lever 3. The wire-pulling mounting seat 51 is provided with a wire hole and a limiting hole both for inserting the wire-pulling wire 52. The wire hole is arranged through the radial direction of the wire-pulling mounting seat 51, and the wire hole and the limiting hole are arranged along the axial direction of the wire-pulling mounting seat 51, so that the wire-pulling wire 52 is bent and inserted into the limiting hole after passing through the wire hole.

[0062] The limiting hole may be arranged on the outer peripheral surface of the wire-pulling mounting seat 51 or on the end surface of the wire-pulling mounting seat 51 relatively far from the lever 3.

[0063] During assembly, the wire-pulling wire 52 is inserted into the wire hole of the wire-pulling mounting seat 51, then the wire-pulling wire 52 is bent, and then the bent section of the wire-pulling wire 52 is bent and inserted into the limiting hole, and the bent section of the wire-pulling wire 52 is closely attached to the outer peripheral surface of the wire-pulling mounting seat 51, so as to fix and limit the wire-pulling wire 52 by the bent section of the wire-pulling wire 52 and the part inserted into the limiting hole.

[0064] In this specification, each embodiment is described in a progressive manner. The key point of each embodiment is to illustrate the differences from other embodiments. The same or similar parts among the embodiments can be referred to each other.

[0065] The wire-pulling mechanism provided by the present utility model has been introduced in detail above. Specific examples are used herein to elaborate on the principle and implementation manner of the present utility model. The description of the above embodiments is only used to help understand the method and its core idea of the present utility model. It should be noted that for those of ordinary skill in the art in this technical field, without departing from the principle of the present utility model, several improvements and modifications can still be made to the present utility model, and these improvements and modifications also fall within the protection scope of the claims of the present utility model.

Claims

1. A wire dialing mechanism, characterized in that: include: A wire-push connecting plate (1) is rotatably arranged on a frame via a pin shaft and is connected to a power mechanism so that the power mechanism drives the wire-push connecting plate (1) to rotate relative to the frame around the pin shaft; A shifting rod (3), the connection end of which is rotatably connected to the thread shifting connecting plate (1), and the free end of which is provided with a thread shifting rod assembly for shifting the suture thread; A slide groove claw (41) disposed below the wire-shifting connecting plate (1) is rotatably disposed on a frame, and the shifting rod (3) is slidably mounted in the slide groove claw (41). The slide groove claw (41) is used to limit the movement direction of the shifting rod (3).

2. The wire-pulling mechanism according to claim 1, characterized in that: The wire-shifting connecting plate (1) is an L-shaped plate, and one side of the L-shaped plate is a horizontal side extending in a horizontal direction. The pin shaft and the connecting pin (2) for connecting the wire-shifting connecting plate (1) and the shifting rod (3) are both arranged on the horizontal side, and the axis of the sliding groove claw (41) passes through the midpoint of the horizontal side.

3. The wire-dial mechanism according to claim 1, characterized in that: The slide groove claw (41) is arranged on the frame via a limit seat (46); the slide groove claw (41) is rotatably connected to the limit seat (46) via a bearing; and the limit seat (46) is detachably connected to the frame.

4. The wire-dial mechanism according to claim 3, characterized in that: The limit seat (46) is slidably connected to the frame, and a locking member is provided between the limit seat (46) and the frame, the locking member being used to fix the relative position of the limit seat (46) and the frame.

5. The wire dialing mechanism according to any one of claims 1 to 4, characterized in that: The dial lever assembly comprises: A wire-pulling mounting seat (51), one end of which is detachably connected to the free end of the shifting rod (3), and the other end of which is provided with a wire hole for inserting a wire-pulling steel wire (52), the wire hole being arranged in a radial direction through the wire-pulling mounting seat (51); A pressing and positioning sleeve (54) is detachably sleeved outside the wire-driving mounting seat (51) and is used to press the wire-driving steel wire (52) onto the positioning step surface of the wire-driving mounting seat (51).

6. The wire-pulling mechanism according to claim 5, characterized in that: The pressing and positioning sleeve (54) is provided with an internal thread, and the wire-drivable mounting seat (51) is provided with an external thread that matches the internal thread.

7. The wire-pulling mechanism according to claim 5, characterized in that: A connecting hole is provided at the center of the pressing and positioning sleeve (54), a threaded hole is provided at the end of the wire-drivable mounting seat (51), and a set screw (55) passes through the connecting hole and is connected to the threaded hole.

8. The wire dialing mechanism according to any one of claims 1 to 4, characterized in that: The wire-driving rod assembly comprises a wire-driving mounting seat (51) for being detachably connected to the wire-driving rod (3); the wire-driving mounting seat (51) is provided with a wire hole and a limit hole both for inserting a wire-driving wire (52); the wire hole is arranged in a radial direction through the wire-driving mounting seat (51); the wire hole and the limit hole are arranged in an axial direction of the wire-driving mounting seat (51), so that the wire-driving wire (52) is bent and inserted into the limit hole after passing through the wire hole.

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