Cylinder type thread trimming structure of computer pattern sewing machine

Abstract

The invention discloses a barrel type thread trimming structure of a computerized pattern sewing machine, which comprises a machine shell, a driving device and a blade, and a sleeve is arranged at the front end of the machine shell and extends forwards; a mounting cylinder is arranged in the sleeve, and a shuttle race shaft of the main machine penetrates from the tail end of the mounting cylinder to the front end of the mounting cylinder; the blades comprise a fixed blade and a movable blade, the fixed blade is mounted at the front end of the sleeve, and the movable blade is mounted on the shuttle race shaft; the head end of the movable blade is provided with a movable cutting edge, and the head end of the fixed blade is provided with a fixed cutting edge. The movable blade is rotated to be meshed with the fixed blade in a staggered mode to achieve thread trimming, so that products such as gloves and handbags which are small in size and are of cylindrical structures can be conveniently arranged on the sleeve in a sleeved mode to be sewn, trimmed and the like, meanwhile, other conventional products can be machined, and the universality of equipment is improved. Meanwhile, the equipment is simpler in structure and convenient to debug, the thread end length can be more accurately controlled, the problems that thread feeding cannot be carried out during sewing and the thread is broken are solved, and the noise of thread trimming is lower.

Description

Technical Field

[0001] The invention relates to the technical field of computer pattern machines, and in particular to a thread cutting structure applied to computer pattern machines. Background Art

[0002] Computer pattern machines are commonly used textile machinery and equipment. They are widely used in sewing operations of luggage, handbags, shoes, gloves and other products in relatively narrow operating spaces, and can achieve relatively fast, efficient and accurate sewing of products. The thread cutting structure of traditional computer patterns is generally set inside the machine body, such as the double thread cutting moving knife driving structure of a computer flat car disclosed in Chinese invention patent CN207176250U, and its thread cutting structure is a recessed structure relative to the machine body. This structure does not hinder the processing of flat products, but it has processing obstacles for some small-sized and cylindrical products, such as gloves, handbags, etc. For example, the front mouth width of an ordinary computer pattern machine is usually 135mm, which makes it impossible to sew and cut the thread for cylindrical products less than 135mm. At the same time, it uses the relative rotation of two moving knives to cut the thread, resulting in a more complex structure, higher cost, poor reliability, and more prone to failure. In addition, most of the existing computerized pattern machines of this type use cylinders to pull the connecting rod to complete the thread trimming action, which makes it difficult to accurately control the length of the thread ends each time the thread is trimmed, which is more likely to cause the sewing thread to fail or break. Moreover, this type of thread trimming makes a lot of noise, and the product structure and debugging process are more complicated, which requires more time to debug. Summary of the invention

[0003] In view of the defects in the prior art, the present invention provides a computer pattern machine barrel-type thread trimming structure which has a simpler structure, lower cost, higher reliability and can adapt to products of more different sizes.

[0004] In order to solve the above technical problems, the present invention adopts the following technical solutions: a computer pattern machine barrel-type thread cutting structure, comprising a machine housing, a driving device and a blade, the driving device is mounted on the machine housing and connected with the shuttle bed shaft of the main machine, characterized in that: a sleeve is arranged at the front end of the machine housing, the sleeve extends forward to protrude from the front of the machine housing; a mounting sleeve is arranged in the sleeve, and the shuttle bed shaft passes through from the rear end of the mounting sleeve to the front end; the blade comprises a fixed blade and a movable blade, the fixed blade is mounted at the front end of the sleeve, and the movable blade is mounted on the shuttle bed shaft to form a structure opposite to the fixed blade; the head end of the movable blade has a movable blade, and the head end of the fixed blade has a fixed blade, and the suture is cut by rotating the movable blade until its movable blade and the fixed blade of the fixed blade are staggered and engaged.

[0005] Furthermore, the upper wall of the sleeve is arranged as an opening structure, so that the entire sleeve forms a groove structure; the fixed blade is installed on the front end outer wall of the sleeve, and the fixed blade of the fixed blade bends and extends upward and extends into the interior of the sleeve from the opening structure; the movable blade is installed against the front end inner wall of the sleeve but does not contact the sleeve, and the movable blade is located on the inside and the fixed blade is located on the outside.

[0006] Preferably, the outer diameter of the sleeve is 3-8 cm, such as 5 cm; the sleeve and the housing are integrally cast to form an integrated structure.

[0007] Furthermore, the tail of the movable blade is connected to a movable blade holder, which is assembled and fixed to the shuttle shaft in front of the front end of the mounting tube, and the movable blade extends forward from the side of the movable blade holder and is close to the front end inner wall of the sleeve.

[0008] Furthermore, a blade seat with a thickness less than that of the sleeve wall is provided at the front end of the sleeve, and the fixed blade is fixed to the blade seat by an adjustable screw and extends beyond the head end of the blade seat into the opening structure of the sleeve to facilitate docking with the movable blade in the sleeve.

[0009] Furthermore, the driving device adopts a motor, the output shaft of the motor is connected to a driving wheel, a driven wheel is installed on the shuttle bed shaft, and the driven wheel is connected to the driving wheel.

[0010] Preferably, the driving wheel and the driven wheel are both gears, which mesh with each other.

[0011] Furthermore, a fixing seat is arranged at the front section of the sleeve, the front end of the mounting tube is mounted in the fixing seat and passes through the fixing seat, and the fixed blade and the movable blade are located in front of the fixing seat.

[0012] Furthermore, a fixing plate is connected to the rear end of the sleeve, the fixing plate and the sleeve form a T-shaped structure, and the fixing plate is fixed to the front end surface of the casing.

[0013] Preferably, a line dividing piece is installed on the inner wall of the front end of the sleeve, the line dividing piece is close to the inner side of the fixed blade, and is used to guide the suture and prevent the suture from being rolled into the shuttle bed.

[0014] The present invention provides a sleeve protruding outward at the front end of the housing, installs a fixed blade to cooperate with a movable blade at the front end of the sleeve, and the movable blade is connected to a motor as a drive. The movable blade is rotated to interlock with the fixed blade to cut the thread, so that some small-sized and cylindrical products such as gloves and handbags can be easily put on the sleeve for sewing and thread cutting, and other conventional products can also be processed, thereby improving the universality of the equipment. At the same time, the equipment structure is simpler, the debugging is more convenient, and the thread length can be controlled more accurately, solving the problem of sewing without thread and thread breakage, and the thread cutting noise is also smaller. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a structural schematic diagram of another angle of the present invention; Figure 3 for Figure 1 An enlarged view of part A is shown; Figure 4 for Figure 2 An enlarged view of part B is shown; Figure 5 This is a schematic diagram of the structure after the casing is removed.

[0016] In the figure, 1 is a casing, 2 is a sleeve, 21 is a fixed plate, 22 is a fixed seat, 23 is a blade seat, 3 is a motor, 31 is a driving wheel, 32 is a driven wheel, 4 is a mounting cylinder, 5 is a fixed blade, 51 is a fixed blade, 6 is a movable blade, 61 is a movable blade, 62 is a movable blade seat, 7 is a shuttle bed shaft, and 8 is a wire dividing piece. DETAILED DESCRIPTION

[0017] In this embodiment, refer to Figure 1-Figure 5 The computer pattern machine cylinder-type thread trimming structure comprises a housing 1 (a housing belonging to a main machine), a driving device and a blade, wherein the driving device is mounted on the housing 1 and connected to a shuttle bed shaft 7 of the main machine; a sleeve 22 is arranged at the front end of the housing 1, and the sleeve extends forward to protrude in front of the housing 1, so that a avoidance position can be formed, so that some small-sized, cylindrical objects can be conveniently sewn and thread trimmed; a mounting cylinder 4 is mounted in the sleeve 2, and the shuttle bed shaft 7 passes through from the rear end of the mounting cylinder 4 to the front end, but does not contact each other; the blade comprises a fixed blade 5 and a movable blade 6, the fixed blade 5 is mounted at the front end of the sleeve 2, and the movable blade 6 is mounted on the shuttle bed shaft 7 to form a structure opposite to the fixed blade 5; the head end of the movable blade 6 has a movable blade 61, and the head end of the fixed blade 5 has a fixed blade 51, and the movable blade 6 is rotated to the point where its movable blade 61 interlocks with the fixed blade 51 of the fixed blade 5 to cut the suture.

[0018] The upper wall of the sleeve 2 is arranged as an open structure, so that the entire sleeve 2 forms a groove structure; the fixed blade 5 is installed on the front end outer wall of the sleeve 2, and the fixed blade 51 of the fixed blade 5 is bent and extended upward and extends into the interior of the sleeve 2 from the opening structure so as to be able to dock with the movable blade 6; the movable blade 6 is installed against the front end inner wall of the sleeve 2 but does not contact the sleeve 2, and the movable blade 6 is located on the inside and the fixed blade 5 is located on the outside.

[0019] The tail of the movable blade 6 is connected to a movable blade holder 62 , which is assembled and fixed to the shuttle shaft 7 in front of the front end of the mounting tube 4 . The movable blade 6 extends forward from the side of the movable blade holder 62 and is close to the front end inner wall of the sleeve 2 .

[0020] A blade seat 23 having a thickness less than that of the wall of the sleeve 2 is provided at the front end of the sleeve 2. The fixed blade 5 is fixed to the blade seat 23 by an adjustable screw and extends beyond the head end of the blade seat 23 into the opening structure of the sleeve 2 so as to dock with the movable blade 6 in the sleeve 2. After loosening the adjustable screw, the position of the fixed blade 5 can be fine-tuned to achieve a higher precision in thread cutting.

[0021] The driving device adopts a motor 3 , the output shaft of the motor 3 is connected to a driving wheel 31 , a driven wheel 32 is installed on the shuttle bed shaft 7 , and the driven wheel 32 is connected to the driving wheel 31 .

[0022] The driving wheel 31 and the driven wheel 32 are both gears, which mesh with each other.

[0023] A fixed seat 22 is provided at the front section of the sleeve 2. The front end of the mounting tube 4 is mounted in the fixed seat 22 and passes through the fixed seat 22 to improve the stability of the mounting structure of the movable blade 6. The fixed blade 5 and the movable blade 6 are located in front of the fixed seat 22.

[0024] A fixing plate 21 is connected to the rear end of the sleeve 2 . The fixing plate 21 and the sleeve 2 form a T-shaped structure. The fixing plate 21 is fixed to the front end surface of the housing 1 .

[0025] A line splitter 8 is installed on the front end inner wall of the sleeve 2, and the line splitter 8 is close to the inner side of the fixed blade 5 for guiding the suture to prevent the suture from being rolled into the shuttle bed. Of course, the line splitter 8 itself belongs to the prior art.

[0026] The outer diameter of the sleeve 2 is 3-8 cm, for example, 5 cm, which can be inserted into most products for sewing operations. The sleeve 2 and the housing 1 are integrally cast to form an integral structure.

[0027] After the sewing is finished, the electric control transmits a signal to the motor 3, and the motor 3 drives the shuttle bed shaft 7, so that the movable blade 6 rotates accordingly. After the movable blade 6 rotates 120 degrees, the fixed blade 5 bites and cuts the thread, and then the motor 3 immediately reverses and returns to the starting angle.

[0028] The present invention has been described in detail above. The above description is only a preferred embodiment of the present invention and should not limit the scope of implementation of the present invention. That is, all equivalent changes and modifications made within the scope of this application should still fall within the scope of the present invention.

Claims

1. A computer pattern machine cylinder-type thread trimming structure, comprising a housing, a driving device and a blade, wherein the driving device is mounted on the housing and connected to the shuttle bed shaft of the host, characterized in that: A sleeve is arranged at the front end of the housing, and the sleeve extends forward to protrude from the front of the housing; a mounting sleeve is arranged in the sleeve, and the shuttle bed shaft passes through from the rear end of the mounting sleeve to the front end; the blade includes a fixed blade and a movable blade, the fixed blade is arranged at the front end of the sleeve, and the movable blade is arranged on the shuttle bed shaft to form a structure opposite to the fixed blade; The head end of the movable blade is provided with a movable blade, and the head end of the fixed blade is provided with a fixed blade. The suture is cut by rotating the movable blade until its movable blade and the fixed blade of the fixed blade interlock and bite.

2. The cylinder-type thread trimming structure of the computer pattern machine according to claim 1, characterized in that: The upper wall of the sleeve is set as an open structure, so that the entire sleeve forms a groove structure; the fixed blade is installed on the front end outer wall of the sleeve, and the fixed blade of the fixed blade bends and extends upward and extends into the interior of the sleeve from the opening structure; The movable blade is installed close to the front inner wall of the sleeve but does not contact the sleeve, and the movable blade is located on the inner side and the fixed blade is located on the outer side.

3. The cylinder-type thread trimming structure of a computer pattern machine according to claim 1 or 2, characterized in that: The tail of the movable blade is connected with a movable blade holder, which is assembled and fixed with the shuttle shaft in front of the front end of the installation tube, and the movable blade extends forward from the side of the movable blade holder and is close to the front end inner wall of the sleeve.

4. The cylinder-type thread trimming structure of the computer pattern machine according to claim 2, characterized in that: A blade seat with a thickness less than that of the sleeve wall is arranged at the front end of the sleeve. The fixed blade is fixed on the blade seat by an adjustable screw and extends into the opening structure of the sleeve beyond the head end of the blade seat.

5. The cylinder-type thread trimming structure of the computer pattern machine according to claim 1 is characterized in that: The driving device adopts a motor, the output shaft of the motor is connected with a driving wheel, a driven wheel is installed on the shuttle bed shaft, and the driven wheel is connected with the driving wheel.

6. The cylinder-type thread trimming structure of the computer pattern machine according to claim 5, characterized in that: The driving wheel and the driven wheel both adopt gears, and the two mesh with each other.

7. The cylinder-type thread trimming structure of the computer pattern machine according to claim 2, characterized in that: A fixing seat is arranged at the front section of the sleeve, the front end of the mounting tube is mounted in the fixing seat and passes through the fixing seat, and the fixed blade and the movable blade are located in front of the fixing seat.

8. The cylinder-type thread trimming structure of a computer pattern machine according to claim 1, characterized in that: The rear end of the sleeve is connected to a fixing plate, the fixing plate and the sleeve form a T-shaped structure, and the fixing plate is fixed to the front end surface of the casing.

9. The cylinder-type thread trimming structure of a computer pattern machine according to claim 2, characterized in that: A wire splitting piece is installed on the inner wall of the front end of the sleeve, and the wire splitting piece is close to the inner side of the fixed blade.

10. The cylinder-type thread trimming structure of a computer pattern machine according to claim 1, characterized in that: The outer diameter of the sleeve is 3-8 cm; the sleeve and the casing are integrally cast to form an integral structure.

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