Seamless underwear machine head with detachable and adjustable machine needle

Abstract

The utility model relates to the technical field of needle replacement of sewing machines, in particular to a seamless underwear machine head with a detachable and adjustable needle, which comprises a fixing sleeve, a needle, an adjusting mechanism and a clamping mechanism. The adjusting mechanism is arranged outside the fixing sleeve and comprises a sliding sleeve, a driving wheel, a circular groove and an abutting part; the sliding sleeve is arranged in the fixed sleeve in a sliding manner; the driving wheel is rotationally arranged outside the fixed sleeve and located on one side of the sliding sleeve, and when the sliding sleeve slides, the driving wheel can be in a rotating state; the abutting part is rotationally arranged on the fixing sleeve and located on one side of the driving wheel. And the clamping mechanism is arranged at the bottom of the sliding sleeve. According to the technical scheme, through the adjusting mechanism, a user can adjust the height of the needle head without repeatedly rotating the sliding sleeve, and the situation that when the sewing machine drives the fixing sleeve and the needle head to do reciprocating descending work, the sliding sleeve displaces due to vibration can be effectively prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of sewing machine needle replacement, and particularly to a seamless underwear machine head with a detachable and adjustable sewing needle. Background Art

[0002] In the manufacturing field of seamless underwear machines, the height adjustment of sewing needles is a key technical link. In the design of traditional seamless underwear machine heads, it is often necessary to finely adjust the height of the needles to adapt to fabrics of different thicknesses and materials. However, in the existing technology, when adjusting the height of the needles, it is usually necessary to repeatedly rotate the sliding sleeve, which is a cumbersome and time-consuming process, reducing production efficiency.

[0003] More critically, when the traditional seamless underwear machine is working, due to the vibration of the machine head, the bolts for fixing the needles often become loose. The loosening of the bolts not only affects the stability of the sewing needles, resulting in a decline in sewing quality, but also may pose safety hazards during the sewing process. In addition, frequent bolt loosening will increase the maintenance cost of the equipment because it is necessary to regularly check and tighten the bolts.

[0004] Chinese Patent Grant Publication No. CN220907854U discloses a seamless underwear machine head, which includes a sleeve and a sewing needle. A connecting column is threadedly connected to the inner wall of the sleeve. The other end of the connecting column is fixedly connected to a fixing column. The other end of the fixing column is connected to a limiting component, and the other end of the limiting component is connected to the sewing needle. In this kind of seamless underwear machine head, by arranging a limiting component, a fixing column and a connecting column between the sleeve and the sewing needle, when the height of the sewing needle is inappropriate, rotate the fixing column, and the connecting column connected to the top of the fixing column will slowly rotate out from the inside of the sleeve, thereby completing the height adjustment of the sewing needle; if the sewing needle breaks during use, just loosen the limiting component to disassemble and install a new sewing needle, which is convenient and fast. And through the above connection method, the connection between the sewing needle and the limiting component, and between the fixing column and the sleeve is more stable, not easy to shake, making the processing more stable.

[0005] However, in actual use of the above structure, since the sewing machine will generate certain vibration and impact force during high-speed operation, this vibration and impact force will act on the connecting column and the sleeve, resulting in the gradual loosening of the threaded connection between the two. The loosening of the threaded connection will not only reduce the accuracy and stability of the connecting column for adjusting the position of the needle, but also may cause the needle to shift or shake during sewing, thereby affecting the sewing quality and efficiency. Summary of the Utility Model

[0006] Aiming at the above problems, a seamless underwear machine head with a detachable and adjustable sewing needle is provided. Through an adjustment mechanism, the problem that the needle will be displaced due to vibration is solved.

[0007] To solve the problems of the existing technology, the utility model provides a seamless underwear machine head with a detachable and adjustable needle, which includes a fixed sleeve and a needle head. The seamless underwear machine head further includes an adjusting mechanism and a clamping mechanism; the adjusting mechanism is arranged outside the fixed sleeve, and the adjusting mechanism includes a sliding sleeve, a driving wheel, a circular groove and an abutting part; the sliding sleeve is slidably arranged inside the fixed sleeve; the driving wheel is rotatably arranged outside the fixed sleeve and on one side of the sliding sleeve, and the driving wheel can be in a rotating state when the sliding sleeve slides; the abutting part is rotatably arranged on the fixed sleeve and on one side of the driving wheel, and when the abutting part rotates, it can abut against the driving wheel and limit the rotation of the driving wheel; the clamping mechanism is arranged at the bottom of the sliding sleeve.

[0008] Preferably, the adjusting mechanism further includes a rotating block and an elastic piece; the rotating block is rotatably arranged outside the fixed sleeve and on one side of the abutting part; the elastic piece is arranged outside the fixed sleeve, and the elastic piece is located on the top of the abutting part.

[0009] Preferably, the adjusting mechanism further includes a clamping post; a clamping groove is formed at the top of the abutting part, and a plurality of clamping grooves are arranged in an array along the circumferential direction of the abutting part; the clamping post is arranged outside the rotating block, and when the rotating block flips, it can drive the clamping post to abut against the inside of the clamping groove.

[0010] Preferably, the clamping mechanism includes a clamping sleeve and a clamping block; the clamping sleeve is slidably arranged outside the sliding sleeve; there are a pair of clamping blocks which are respectively arranged on the top of the clamping sleeve; a through groove for the clamping block to insert and rotate is formed at the bottom of the sliding sleeve.

[0011] Preferably, the clamping mechanism further includes a fixing plate and a sliding post; the fixing plate is arranged on the top of the clamping sleeve; the sliding post is slidably arranged on the top of the fixing plate.

[0012] Preferably, the clamping mechanism further includes a limiting sleeve, a sliding clamping block and a clamping rod; the limiting sleeve is arranged inside the clamping sleeve and outside the fixing plate; there are a pair of sliding clamping blocks which are respectively slidably arranged on the top of the limiting sleeve; the clamping rod is arranged on the right side of the sliding clamping block.

[0013] Preferably, the clamping mechanism further includes a connecting rod; the connecting rod is rotatably connected with the sliding clamping block, and the other end of the connecting rod is rotatably connected with the sliding post. When the sliding post slides upward, it can drive the sliding clamping block and the clamping rod to slide relatively closer through the connecting rod.

[0014] Preferably, the clamping mechanism further includes a clamping plate, a positioning rod and a connecting piece; the clamping plate is arranged on the outside of the clamping sleeve and on one side of the connecting piece; the connecting piece is arranged outside the sliding post and on the top of the fixing plate, and a stroke groove is formed on the connecting piece; the positioning rod is arranged on the connecting piece, and the positioning rod can abut against the clamping plate by screwing; the connecting piece is arranged on the outside of the clamping sleeve.

[0015] The beneficial effects of the present utility model compared with the prior art are as follows:

[0016] 1. By setting the adjustment mechanism in the present utility model, the user can adjust the height of the needle without repeatedly rotating the sliding sleeve, and it can effectively prevent the sliding sleeve from shifting due to vibration when the sewing machine drives the fixed sleeve and the needle to reciprocate downwards.

[0017] 2. By setting the clamping mechanism in the present utility model, it can achieve quick installation and clamping without manually repeatedly rotating the clamping sleeve, and it can prevent the position of the needle from changing when the sewing machine is working. Description of the Drawings

[0018] Figure 1 is the three-dimensional structure diagram of the head of a seamless underwear machine with a detachable and adjustable sewing needle from the first perspective of the present utility model;

[0019] Figure 2 is the three-dimensional structure diagram of the head of a seamless underwear machine with a detachable and adjustable sewing needle from the second perspective of the present utility model;

[0020] Figure 3 is the partially cut-away three-dimensional structure diagram of the head of a seamless underwear machine with a detachable and adjustable sewing needle of the present utility model;

[0021] Figure 4 is Figure 2 the enlarged structure diagram at B in

[0022] Figure 5 is the three-dimensional structure diagram of the elastic piece of the head of a seamless underwear machine with a detachable and adjustable sewing needle of the present utility model;

[0023] Figure 6 is Figure 1 the enlarged structure diagram at A in

[0024] Figure 7 is the three-dimensional structure diagram of the sliding sleeve of the head of a seamless underwear machine with a detachable and adjustable sewing needle of the present utility model;

[0025] Figure 8 is the partially sectional three-dimensional structure diagram of the head of a seamless underwear machine with a detachable and adjustable sewing needle of the present utility model;

[0026] Figure 9 is the three-dimensional structure diagram of the head of a seamless underwear machine with a detachable and adjustable sewing needle of the present utility model in the state where the sliding clamping blocks are relatively close to each other.

[0027] The reference numerals in the figure are: 1, fixed sleeve; 2, needle; 3, adjusting mechanism; 31, sliding sleeve; 311, through groove; 32, driving wheel; 321, circular groove; 33, abutting part; 34, rotating clamping block; 35, elastic piece; 36, clamping column; 4, clamping mechanism; 41, clamping sleeve; 42, clamping block; 43, fixing plate; 44, sliding column; 45, limiting sleeve; 46, sliding clamping block; 47, clamping rod; 48, connecting rod; 49, clamping plate; 491, positioning rod; 492, connecting piece. Detailed implementation manners

[0028] To further understand the features, technical means, specific purposes and functions achieved by the present utility model, the present utility model will be described in further detail below in conjunction with the drawings and specific implementation manners.

[0029] See Figures 1 - 3 As shown, a seamless underwear machine head with a detachable and adjustable sewing needle includes a fixed sleeve 1 and a needle 2. The seamless underwear machine head further includes an adjusting mechanism 3 and a clamping mechanism 4; the adjusting mechanism 3 is arranged outside the fixed sleeve 1, and the adjusting mechanism 3 includes a sliding sleeve 31, a driving wheel 32, a circular groove 321 and an abutting part 33; the sliding sleeve 31 is slidably arranged inside the fixed sleeve 1; the driving wheel 32 is rotatably arranged outside the fixed sleeve 1 and on one side of the sliding sleeve 31, and when the sliding sleeve 31 slides, the driving wheel 32 can be in a rotating state; the abutting part 33 is rotatably arranged on the fixed sleeve 1 and on one side of the driving wheel 32, and when the abutting part 33 rotates, it can abut against the driving wheel 32 and limit the rotation of the driving wheel 32; the clamping mechanism 4 is arranged at the bottom of the sliding sleeve 31.

[0030] A circular groove 321 is formed at the right end of the driving wheel 32, and a plurality of circular grooves 321 are arranged in an array along the circumferential direction of the driving wheel 32. The abutting part 33 can abut inside the circular groove 321. First, the fixed sleeve 1 is installed at the stamping position of the sewing machine. Then the needle 2 is clamped on the clamping mechanism 4. When the height of the needle 2 needs to be adjusted, the sliding sleeve 31 is first slidably installed inside the fixed sleeve 1. During this process, the sliding sleeve 31 can contact the driving wheel 32 and make it rotate. When the sliding sleeve 31 and the clamping mechanism 4 are installed, if the height of the needle 2 needs to be further adjusted, first rotate the abutting part 33 in the reverse direction until it loses the limiting effect on the driving wheel 32. At this time, the sliding sleeve 31 can move downward along the fixed sleeve 1. When the sliding sleeve 31 moves to the height required for work, rotate the abutting part 33 and abut it in the corresponding circular groove 321 formed on the driving wheel 32, so as to limit the rotation of the driving wheel 32. At this time, the sliding sleeve 31 is in a fixed state. This enables the user to adjust the height of the needle 2 without repeatedly rotating the sliding sleeve 31, and can effectively prevent the sliding sleeve 31 from shifting due to vibration when the sewing machine drives the fixed sleeve 1 and the needle 2 to perform reciprocating downward work.

[0031] See Figure 4 and Figure 5 As shown, the adjusting mechanism 3 further includes a rotating block 34 and an elastic piece 35; the rotating block 34 is rotatably arranged outside the fixed sleeve 1 and is located on one side of the abutting portion 33; the elastic piece 35 is arranged outside the fixed sleeve 1, and the elastic piece 35 is located on the top of the abutting portion 33.

[0032] When the abutting portion 33 abuts inside the circular groove 321, the elastic piece 35 will deform and effectively abut the rotating block 34 at the top position of the abutting portion 33.

[0033] See Figure 5 As shown, the adjusting mechanism 3 further includes a clamping post 36; a clamping groove is formed at the top of the abutting portion 33, and a plurality of clamping grooves are arranged in an array along the circumferential direction of the abutting portion 33; the clamping post 36 is arranged outside the rotating block 34, and when the rotating block 34 flips, it can drive the clamping post 36 to abut inside the clamping groove.

[0034] When the rotating block 34 is squeezed by the elastic piece 35 and contacts the abutting portion 33, it can drive the clamping post 36 to abut in the clamping groove formed on the abutting portion 33, which can effectively prevent the thread loosening phenomenon caused by the reciprocating vibration of the abutting portion 33 during the working state of the sewing machine.

[0035] See Figure 8 As shown, the clamping mechanism 4 includes a clamping sleeve 41 and a clamping block 42; the clamping sleeve 41 is slidably arranged outside the sliding sleeve 31; there are a pair of clamping blocks 42 and they are respectively arranged on the top of the clamping sleeve 41; a through groove 311 for the clamping block 42 to insert and rotate is formed at the bottom of the sliding sleeve 31.

[0036] A through hole for the needle 2 to insert is formed at the bottom of the clamping sleeve 41. When installing the needle 2, it can be inserted through the through hole. When the clamping sleeve 41 needs to be quickly installed at the bottom of the sliding sleeve 31, first insert the clamping block 42 into the inside of the through groove 311 formed on the sliding sleeve 31 until the clamping block 42 abuts inside the through groove 311, and then rotate the clamping sleeve 41. At this time, the quick installation between the clamping sleeve 41 and the sliding sleeve 31 is completed.

[0037] See Figure 8 As shown, the clamping mechanism 4 further includes a fixing plate 43 and a sliding column 44; the fixing plate 43 is arranged on the top of the clamping sleeve 41; the sliding column 44 is slidably arranged on the top of the fixing plate 43.

[0038] When the needle 2 is inserted into the inside of the clamping sleeve 41, it can first contact the sliding column 44, and when contacting, it can drive the sliding column 44 to slide upward.

[0039] See Figure 8 andFigure 9 As shown, the clamping mechanism 4 further includes a limiting sleeve 45, a sliding clamping block 46 and a clamping rod 47; the limiting sleeve 45 is arranged inside the clamping sleeve 41 and outside the fixing plate 43; there are a pair of sliding clamping blocks 46 which are respectively arranged on the top of the limiting sleeve 45 in a sliding manner; the clamping rod 47 is arranged on the right side of the sliding clamping block 46.

[0040] On both sides of the needle 2, there are clamping interfaces for inserting the clamping rod 47. When the sliding column 44 slides upward, it can drive the sliding clamping block 46 and the clamping rod 47 to slide stably relatively close along the limiting sleeve 45 until the clamping rod 47 is inserted into the clamping interfaces opened on both sides of the needle 2.

[0041] See Figure 8 and Figure 9 As shown, the clamping mechanism 4 further includes a connecting rod 48; the connecting rod 48 is rotatably connected to the sliding clamping block 46, and the other end of the connecting rod 48 is rotatably connected to the sliding column 44. When the sliding column 44 slides upward, it can drive the sliding clamping block 46 and the clamping rod 47 to slide relatively close through the connecting rod 48.

[0042] When the sliding column 44 and the limiting sleeve 45 slide upward, they can drive a pair of connecting rods 48 to be relatively close, and during this process, the connecting rod 48 can drive the sliding clamping block 46 and the clamping rod 47 to slide, completing the rapid installation of the needle 2, and rapid installation and clamping can be achieved without manually rotating the clamping sleeve 41 repeatedly.

[0043] See Figure 8 and Figure 9 As shown, the clamping mechanism 4 further includes a clamping plate 49, a positioning rod 491 and a connecting piece 492; the clamping plate 49 is arranged outside the clamping sleeve 41 and on one side of the connecting piece 492; the connecting piece 492 is arranged outside the sliding column 44 and on the top of the fixing plate 43, and a travel groove is opened on the connecting piece 492; the positioning rod 491 is arranged on the connecting piece 492, and the positioning rod 491 can be screwed to abut against the clamping plate 49; the connecting piece 492 is arranged outside the clamping sleeve 41.

[0044] During the process of the sliding column 44 rising, it can drive the connecting piece 492 to slide synchronously. In the initial state, the positioning rod 491 does not abut against the clamping plate 49. After the sliding column 44 rises and drives the clamping rod 47 to clamp the needle 2, when the user rotates the positioning rod 491 and abuts it against the clamping plate 49, at this time, the connecting piece 492 can be fixed on the clamping sleeve 41 without displacement. A rubber block is sleeved on the positioning rod 491, and this rubber block contacts and abuts against the connecting piece 492, which can increase the friction between the positioning rod 491 and the connecting piece 492, so that the position of the needle 2 will not change when the sewing machine is working.

[0045] Working principle: When it is necessary to adjust the height of the needle 2, first slide the sliding sleeve 31 inside the fixed sleeve 1 and make it contact and rotate with the driving wheel 32. After installation, if further height adjustment is required, reverse-rotate the tightening part 33 to release the restriction on the driving wheel 32, so that the sliding sleeve 31 can descend along the fixed sleeve 1. When the sliding sleeve 31 reaches the required height, rotate the tightening part 33 and make it abut against the circular groove 321 of the driving wheel 32, thereby fixing the sliding sleeve 31. This process does not require repeated rotation of the sliding sleeve 31 and can effectively prevent the displacement of the sliding sleeve 31 caused by vibration. When the tightening part 33 abuts against the circular groove 321, the elastic piece 35 deforms, pushing the rotating clamping block 34 to abut the clamping column 36 in the clamping groove of the tightening part 33 to prevent the thread from loosening due to vibration. A through hole for the needle 2 to be inserted is provided at the bottom of the clamping sleeve 41. During installation, insert the clamping block 42 into the through groove 311 of the sliding sleeve 31, and then rotate the clamping sleeve 41 to complete the installation. When the needle 2 is inserted into the clamping sleeve 41, it first contacts the sliding column 44. During this process, the connecting rod 48 can stably slide along the limiting sleeve 45 through the rotationally connected sliding clamping block 46 and the clamping rod 47 until the clamping rod 47 is inserted into the clamping interface of the needle 2, realizing rapid installation. When the sliding column 44 rises, it also drives the connecting piece 492 to slide. In the initial state, the positioning rod 491 does not abut against the clamping plate 49. After clamping is completed, rotate the positioning rod 491 and make it abut against the clamping plate 49 to fix the connecting piece 492. The rubber block on the positioning rod 491 increases the friction with the connecting piece 492 to ensure the stable position of the needle 2 during the operation of the sewing machine.

[0046] The above embodiments only represent one or several implementation manners of the present utility model, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the present utility model. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several deformations and improvements can still be made, and these all belong to the protection scope of the present utility model. Therefore, the protection scope of the present utility model should be subject to the appended claims.

Claims

1. A seamless underwear machine head with a detachable and adjustable needle, comprising a fixing sleeve (1) and a needle head (2), characterized in that: The head of the seamless underwear machine further comprises an adjusting mechanism (3) and a clamping mechanism (4); the adjusting mechanism (3) is arranged outside the fixed sleeve (1), and comprises a sliding sleeve (31), a driving wheel (32) and a pressing portion (33); the sliding sleeve (31) is slidingly arranged inside the fixed sleeve (1); the driving wheel (32) is rotatably arranged outside the fixed sleeve (1) and located on one side of the sliding sleeve (31); when the sliding sleeve (31) slides, the driving wheel (32) can be in a rotating state; the pressing portion (33) is rotatably arranged on the top of the fixed sleeve (1) and located on one side of the driving wheel (32); when the pressing portion (33) rotates, it can abut against the driving wheel (32) and restrict the rotation of the driving wheel (32); and the clamping mechanism (4) is arranged at the bottom of the sliding sleeve (31).

2. The seamless underwear machine head with detachable and adjustable needle according to claim 1, characterized in that: The adjustment mechanism (3) further comprises a rotating clamping block (34) and an elastic sheet (35); the rotating clamping block (34) is rotatably arranged outside the fixing sleeve (1) and is located on one side of the abutting portion (33); the elastic sheet (35) is arranged outside the fixing sleeve (1), and is located on the top of the abutting portion (33).

3. The seamless underwear machine head with detachable and adjustable needle according to claim 2, characterized in that: The adjustment mechanism (3) further comprises a clamping column (36); a clamping groove is provided at the top of the abutting portion (33), and a plurality of the clamping grooves are arranged in an array along the circumferential direction of the abutting portion (33); the clamping column (36) is arranged outside the rotating clamping block (34), and when the rotating clamping block (34) is turned over, the clamping column (36) can be driven to abut against the inside of the clamping groove.

4. The seamless underwear machine head with detachable and adjustable needle according to claim 1, characterized in that: The clamping mechanism (4) comprises a clamping sleeve (41) and a clamping block (42); the clamping sleeve (41) is slidably arranged outside the sliding sleeve (31); the clamping block (42) has a pair of clamping blocks respectively arranged on the top of the clamping sleeve (41); and the bottom of the sliding sleeve (31) is provided with a through groove (311) for the clamping block (42) to be inserted and rotated.

5. The seamless underwear machine head with detachable and adjustable needle according to claim 4, characterized in that: The clamping mechanism (4) further comprises a fixed plate (43) and a sliding column (44); the fixed plate (43) is arranged on the top of the clamping sleeve (41); and the sliding column (44) is slidably arranged on the top of the fixed plate (43).

6. The seamless underwear machine head with detachable and adjustable needle according to claim 5, characterized in that: The clamping mechanism (4) further comprises a limiting sleeve (45), a sliding clamping block (46) and a clamping rod (47); the limiting sleeve (45) is arranged inside the clamping sleeve (41) and outside the fixing plate (43); the sliding clamping block (46) has a pair of sliding clamps respectively arranged on the top of the limiting sleeve (45); and the clamping rod (47) is arranged on the right side of the sliding clamping block (46).

7. The seamless underwear machine head with detachable and adjustable needle according to claim 6, characterized in that: The clamping mechanism (4) further comprises a connecting rod (48); the connecting rod (48) is rotatably connected to the sliding clamping block (46); the other end of the connecting rod (48) is rotatably connected to the sliding column (44); when the sliding column (44) rises and slides, the connecting rod (48) can drive the sliding clamping block (46) and the clamping rod (47) to slide relatively close to each other.

8. The seamless underwear machine head with detachable and adjustable needle according to claim 4, characterized in that: The clamping mechanism (4) further comprises a clamping plate (49), a positioning rod (491) and a connecting piece (492); the clamping plate (49) is arranged outside the clamping sleeve (41) and located on one side of the connecting piece (492); the connecting piece (492) is arranged outside the sliding column (44) and located on the top of the fixing plate (43); a travel groove is provided on the connecting piece (492); the positioning rod (491) is arranged on the connecting piece (492), and the positioning rod (491) can be screwed into the clamping plate (49) by a screw thread; the connecting piece (492) is arranged outside the clamping sleeve (41).

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