Working rotating shuttle angle positioning mechanism

Abstract

The utility model discloses a working rotating shuttle angle positioning mechanism which comprises an adjusting assembly, a clamping assembly is installed at the front end of the adjusting assembly, the clamping assembly comprises a shell, a pair of wedge-shaped blocks which are symmetrical left and right is connected in the shell in a sliding mode, and the inner ends of the wedge-shaped blocks are connected with wedge-shaped extrusion blocks in a sliding mode. The front end of the shell is fixedly connected with a pair of wedge-shaped extrusion blocks, the rear end of each wedge-shaped extrusion block is fixedly connected with an electric push rod, the front ends of the pair of wedge-shaped blocks are fixedly connected with a clamping strip, and the clamping strips penetrate through the front end of the shell. The pair of wedge-shaped blocks are pushed towards the two sides, the rotating shuttle is placed between the pair of wedge-shaped blocks, then the electric push rod and the wedge-shaped extrusion block are reversely driven to move backwards, then the pair of wedge-shaped blocks are driven to be close to each other, the clamping strips are driven to be close to each other to clamp the rotating shuttle, and the adjustable clamping strips can clamp and position the rotating shuttles of different sizes.

Description

Technical Field

[0001] The utility model relates to the field of rotary hook positioning, in particular to an upper rotary hook angle positioning mechanism. Background Art

[0002] The rotary hook is a key component of a sewing machine, mainly used in industrial sewing machines and high-end household sewing machines. During the sewing process, it plays an important role in hooking and guiding the upper thread to wrap around the lower thread to form a lockstitch. It is like a delicate little hook that cooperates with the upper thread to allow the thread to shuttle and interweave between the fabrics, thereby sewing the fabrics together.

[0003] China's published patent application number: CN202420408894.7, provides a horizontal rotating hook structure. This solution uses the projection of the slide rail along the axial direction of the inner shuttle to overlap with the positioning groove, which is 30% to 60% of the width of the positioning groove. When the sewing needle is lifted, the thread buckle is pulled upward to apply force. Since the position of the sewing needle corresponds to the position approximately in the middle of the positioning block (it will swing within a certain range), the thread buckle cooperates with the end of the slide rail to form a small pullback force, eliminating the claw mechanism in the prior art and reducing the complex mechanical structure. However, when the shuttle is working, it is necessary to repeatedly calibrate the angular position of the shuttle, which is more troublesome. When shuttles of different sizes need to be positioned, it is more troublesome to replace the shuttle.

[0004] Therefore, we propose an upper working hook angle positioning mechanism. Utility Model Content

[0005] In order to overcome the shortcomings of the prior art, the purpose of the utility model is to provide an upper working hook angle positioning mechanism, which clamps hooks of different sizes by utilizing two wedge blocks to move relative or oppositely. When the electric push rod pushes the wedge-shaped extrusion block to move forward, the pair of wedge blocks are pushed to both sides, placing the hook between the pair of wedge blocks, and then the electric push rod is driven in the opposite direction, the wedge-shaped extrusion block moves backward, and then drives the pair of wedge blocks to move closer to each other, thereby driving the clamping bar to move inward to clamp the hook. The adjustable clamping bar can clamp and position hooks of different sizes.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions:

[0007] A hook angle positioning mechanism includes an adjustment assembly, a clamping assembly installed at the front end of the adjustment assembly, and a housing. A pair of bilaterally symmetrical wedge blocks are slidably connected to the interior of the housing. The inner ends of the pair of wedge blocks are slidably connected to wedge-shaped extrusion blocks. The rear ends of the wedge-shaped extrusion blocks are fixedly connected to electric push rods. The front ends of the pair of wedge blocks are fixedly connected to clamping bars, and the clamping bars pass through the front end of the housing.

[0008] By arranging a pair of left-right symmetrical wedge blocks inside the shell, the inner ends of the wedge blocks are slidably connected to the wedge extrusion blocks, the rear ends of the wedge extrusion blocks are connected to the electric push rod, and the front ends of the wedge blocks are connected to the clamping bars, so that the electric push rod is used to push the wedge extrusion blocks to move, thereby enabling the wedge blocks to drive the clamping bars to clamp rotary hooks of different sizes.

[0009] Furthermore, the adjustment assembly includes a U-shaped base, the top end of the U-shaped base is rotatably connected to a screw rod, one end of the screw rod passes through the left end of the U-shaped base and is fixedly connected to a knob;

[0010] A screw rod with a rotation connection is arranged at the top of the U-shaped base, and one end of the screw rod is connected to a knob, so that the purpose of driving the screw rod to rotate by rotating the knob is achieved.

[0011] Furthermore, a sliding rod is fixedly connected to the top of the base and located in front of the screw rod, and the sliding rod is symmetrically distributed with the screw rod;

[0012] By arranging a fixedly connected sliding rod at the top of the U-shaped base and in front of the screw rod, and the sliding rod and the screw rod are symmetrically distributed, the purpose of providing support and guidance for the subsequent stable sliding of the slider is achieved.

[0013] Furthermore, the adjustment component also includes a slider, the front end of which is sleeved on the middle part of the slide rod, and the slider is slidably connected to the slide rod.

[0014] Furthermore, a screw sleeve is fixedly connected to the rear end of the slider, the screw sleeve is sleeved on the middle part of the screw rod, and the screw sleeve is threadedly connected to the screw rod.

[0015] Furthermore, a pair of symmetrical buckles are fixedly connected to the front end of the slider, and the buckles are adapted to the housing.

[0016] Furthermore, the front end of the shell is provided with an opening adapted to fit the clamping strip.

[0017] Furthermore, a sliding groove adapted to the wedge block is provided at the front end of the interior of the shell, and the sliding groove is slidably connected to the wedge block.

[0018] In summary, the present invention has the following beneficial effects:

[0019] 1. The rotary hook can be clamped by cooperating with the various parts of the clamping assembly. The two wedge blocks move relative to or opposite to each other to clamp rotary hooks of different sizes. When the electric push rod pushes the wedge-shaped extrusion block forward, the wedge-shaped extrusion block squeezes the pair of wedge blocks, and the pair of wedge blocks are pushed to both sides. The pair of wedge blocks move away from each other, and the pair of wedge blocks are separated. The rotary hook is placed between the pair of wedge blocks, and then the electric push rod is driven in the opposite direction. The wedge-shaped extrusion block moves backward, and then drives the pair of wedge blocks closer to each other, thereby driving the clamping bar inward to clamp the rotary hook. The adjustable clamping bar can clamp and position rotary hooks of different sizes.

[0020] 2. The position of the clamping assembly is adjusted by the adjusting assembly, so that the shuttle can be moved as needed, which is beneficial to subsequent sewing. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 Schematic diagram of the overall structure of this embodiment;

[0022] Figure 2 This is a schematic diagram of the overall split structure in this embodiment;

[0023] Figure 3 This is a schematic diagram of the structure of the disassembled clamping assembly in this embodiment;

[0024] Figure 4 Schematic diagram of the structure of the electric push rod in this embodiment;

[0025] Figure 5 Schematic diagram of the structure of the clamping bar in this embodiment.

[0026] In the figure, 1. Adjustment component; 2. Clamping component; 101. U-shaped base; 102. Screw rod; 103. Sliding rod; 104. Knob; 105. Screw sleeve; 106. Slider; 107. Buckle; 201. Housing; 202. Wedge block; 203. Wedge-shaped extrusion block; 204. Electric push rod; 205. Clamping bar. DETAILED DESCRIPTION

[0027] The present invention will be described in further detail below with reference to the accompanying drawings.

[0028] Identical components are denoted by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "upper," and "lower" used in the following description refer to directions in the accompanying drawings, and the terms "bottom," "top," "inner," and "outer" refer to directions toward or away from the geometric center of a particular component, respectively.

[0029] Reference Figure 1-Figure 5As shown, an upper hook angle positioning mechanism in a preferred embodiment of the present invention includes an adjustment component 1, a clamping component 2 is installed at the front end of the adjustment component 1, and the clamping component 2 includes a housing 201. A pair of bilaterally symmetrical wedge blocks 202 are slidably connected to the interior of the housing 201. The inner ends of the pair of wedge blocks 202 are slidably connected to wedge-shaped extrusion blocks 203. The rear ends of the wedge-shaped extrusion blocks 203 are fixedly connected to electric push rods 204. The front ends of the pair of wedge blocks 202 are fixedly connected to clamping bars 205. The clamping bars 205 pass through the front end of the housing 201.

[0030] A pair of bilaterally symmetrical wedge blocks 202 are provided inside the housing 201. The inner ends of the wedge blocks 202 are slidably connected to the wedge-shaped extrusion blocks 203. The rear ends of the wedge-shaped extrusion blocks 203 are connected to the electric push rod 204. The front ends of the wedge blocks 202 are connected to the clamping bars 205. The electric push rod 204 pushes the wedge-shaped extrusion blocks 203 to move, thereby enabling the wedge blocks 202 to drive the clamping bars 205 to clamp hooks of different sizes.

[0031] Reference Figure 2 As shown, the adjustment assembly 1 includes a U-shaped base 101, the top of the U-shaped base 101 is rotatably connected to a screw rod 102, one end of the screw rod 102 passes through the left end of the U-shaped base 101 and is fixedly connected to a knob 104;

[0032] By arranging a rotatably connected screw rod 102 at the top of the U-shaped base 101 , one end of the screw rod 102 is connected to the knob 104 , so that the purpose of driving the screw rod 102 to rotate by rotating the knob 104 is achieved.

[0033] A sliding rod 103 is fixedly connected to the top of the base 101 and located in front of the screw rod 102. The sliding rod 103 is symmetrically distributed with the screw rod 102.

[0034] By providing a fixedly connected slide bar 103 at the top of the U-shaped base 101 and in front of the screw rod 102 , and the slide bar 103 and the screw rod 102 are symmetrically distributed, the purpose of providing support and guidance for the stable sliding of the subsequent slider 106 is achieved.

[0035] The adjustment assembly 1 further includes a slider 106, the front end of which is sleeved on the middle portion of the slide bar 103, and the slider 106 is slidably connected to the slide bar 103;

[0036] By sleeve-fitting the front end of the slider 106 onto the middle portion of the slide bar 103 and slidably connecting the slider 106 therewith, the slider 106 can slide smoothly on the slide bar 103 .

[0037] The rear end of the slider 106 is fixedly connected with a screw sleeve 105, which is sleeved on the middle part of the screw rod 102, and the screw sleeve 105 is threadedly connected to the screw rod 102;

[0038] By setting a fixedly connected screw sleeve 105 at the rear end of the slider 106, the screw sleeve 105 is sleeved on the middle part of the screw rod 102 and threadedly connected thereto, so that when the screw rod 102 rotates, the screw sleeve 105 and the slider 106 are driven to move along the screw rod 102.

[0039] A pair of symmetrical buckles 107 are fixedly connected to the front end of the slider 106, and the buckles 107 are adapted to the housing 201;

[0040] By providing a pair of symmetrical buckles 107 at the front end of the slider 106 , and the buckles 107 are adapted to the housing 201 , the housing 201 is stably mounted on the front end of the slider 106 .

[0041] Reference Figure 3-Figure 5 As shown, the front end of the housing 201 is provided with an opening adapted to fit the clamping strip 205;

[0042] By providing an opening adapted to the clamping bar 205 at the front end of the housing 201, a channel is provided for the movement of the clamping bar 205, so that the clamping bar 205 can smoothly extend out of the housing 201 to clamp the rotary hook.

[0043] The front end of the housing 201 is provided with a slide groove adapted to fit the wedge block 202, and the slide groove is slidably connected to the wedge block 202;

[0044] By providing a slide groove adapted to the wedge block 202 at the front end of the housing 201 and making the slide groove and the wedge block 202 slidably connected, a guide is provided for the movement of the wedge block 202 to ensure the stable movement of the wedge block 202.

[0045] Specific implementation process: First, according to the size of the rotary hook, start the electric push rod 204. When the electric push rod 204 pushes the wedge-shaped extrusion block 203 to move forward, the wedge-shaped extrusion block 203 squeezes the pair of wedge blocks 202, and the pair of wedge blocks 202 are pushed to both sides. The pair of wedge blocks 202 move back to each other, and the pair of wedge blocks 202 are separated. Then, place the rotary hook between the pair of wedge blocks 202, and then drive the electric push rod 204 in the opposite direction. The wedge-shaped extrusion block 203 moves backward, and then drives the pair of wedge blocks 202 to move closer to each other, thereby driving the clamping bar 205 to move inward to clamp the rotary hook. The adjustable clamping bar 205 can clamp and position rotary hooks of different sizes. When the position of the rotary hook needs to be adjusted, rotate the knob 104, and the knob 104 drives the screw rod 102 to rotate. Since the screw sleeve 105 is sleeved on the middle part of the screw rod 102 and is aligned with the screw rod 102, Threaded connection, the screw sleeve 105 at the rear end of the slider 106 will move along the screw rod 102 as the screw rod 102 rotates. At the same time, the front end of the slider 106 is sleeved on the middle part of the slide rod 103 and is slidably connected to the slide rod 103. The slide rod 103 provides support and guidance for the movement of the slider 106, so that the slider 106 can move stably. The front end of the slider 106 is connected to the housing 201 through the buckle 107, thereby driving the clamping assembly 2 and the clamped shuttle to move, making it easy to drive the shuttle to move as needed, which is beneficial to subsequent sewing.

[0046] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions are merely illustrative of the principles of the present invention. Various changes and improvements may be made to the present invention without departing from the spirit and scope of the present invention. Such changes and improvements are intended to fall within the scope of the present invention. The scope of protection claimed in this invention is defined by the appended claims and their equivalents.

Claims

1. An upper hook angle positioning mechanism, characterized by: It comprises an adjusting component (1), wherein a clamping component (2) is installed at the front end of the adjusting component (1); The clamping assembly (2) comprises a housing (201), a pair of bilaterally symmetrical wedge blocks (202) being slidably connected to the interior of the housing (201), a wedge-shaped extrusion block (203) being slidably connected to the inner ends of the pair of wedge blocks (202), an electric push rod (204) being fixedly connected to the rear ends of the wedge-shaped extrusion blocks (203), and a clamping bar (205) being fixedly connected to the front ends of the pair of wedge blocks (202), wherein the clamping bar (205) passes through the front end of the housing (201).

2. The upper hook angle positioning mechanism according to claim 1, characterized in that: The adjustment assembly (1) comprises a U-shaped base (101), the top end of the U-shaped base (101) being rotatably connected to a screw rod (102), one end of the screw rod (102) passing through the left end of the U-shaped base (101) and being fixedly connected to a knob (104).

3. The upper hook angle positioning mechanism according to claim 2, characterized in that: A sliding rod (103) is fixedly connected to the top end of the ssU-shaped base (101) and located in front of the screw rod (102), and the sliding rod (103) and the screw rod (102) are symmetrically distributed.

4. The upper hook angle positioning mechanism according to claim 1, characterized in that: The adjustment component (1) further comprises a slider (106), the front end of which is sleeved on the middle portion of the slide bar (103), and the slider (106) is slidably connected to the slide bar (103).

5. The upper hook angle positioning mechanism according to claim 4, characterized in that: The rear end of the slider (106) is fixedly connected to a screw sleeve (105), the screw sleeve (105) is sleeved on the middle part of the screw rod (102), and the screw sleeve (105) is threadedly connected to the screw rod (102).

6. The upper hook angle positioning mechanism according to claim 4, characterized in that: A pair of symmetrical buckles (107) are fixedly connected to the front end of the slider (106), and the buckles (107) are adapted to the housing (201).

7. The upper hook angle positioning mechanism according to claim 1, characterized in that: The front end of the housing (201) is provided with an opening adapted to fit the clamping strip (205).

8. The upper hook angle positioning mechanism according to claim 7, characterized in that: A sliding groove adapted to the wedge block (202) is provided at the front end of the interior of the housing (201), and the sliding groove is slidably connected to the wedge block (202).

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