CN111663257A - A thread trimming device for a glove sewing machine - Google Patents

Abstract

The invention discloses a thread end trimming device of a glove overlocking machine, which solves the problems of excessively long thread ends and complex structural design of glove overlock trimming at the present stage. It includes a fixed trimming blade, a movable trimming blade, a linkage mechanism and a suction mechanism, and the suction hole is aligned with the edge-locking working position of the worktable; the fixed trimming blade is fixed on the suction frame and one side thereof is fitted. At the wrist of the glove processed on the worktable, the movable trimmer blade is hingedly installed on the suction frame, and the trimming range of the fixed trimmer blade and the movable trimmer blade trims the glove seam thread head sucked into the suction hole; the linkage mechanism is in the control of Under the control of the system, the movable trimming blade is driven to trim the glove after the glove is finished. The thread ends on the gloves are trimmed very short, and the excess thread ends are almost invisible, the influence of the glove overlock thread ends on the aesthetics is eliminated, the appearance quality of the gloves is improved, the service life of the trimming blade is significantly prolonged, and the overall structure design is simple.

Description

A thread trimming device for a glove sewing machine

technical field

The invention relates to the technical field of glove processing equipment, in particular to a thread trimming device of a glove sewing machine.

Background technique

In order to be beautiful and durable, knitted gloves usually need to lock the wrist of the glove and wrap a rubber band in it for easy use after knitting. At present, the most common method is to use a special glove overlocking machine, which is completed by one person operating a machine, that is, manually placing the glove bowl under the presser foot of the overlocking machine, and then starting the motor through the foot pedal, thereby Finish the seaming of the glove bowl; in this process, the operator not only has to operate the motor to drive the seaming machine to work, so as to make it rotate several times to complete the overall seaming of the wrist of the glove, but also after the seaming is completed. The work of manually cutting the seam thread and trimming the thread ends is very tedious and requires both hands and feet to maintain coordination, and at the same time requires attention to ensure that the seam joints are coincident, so this work requires workers to have certain skills, and due to the machine's The rotational speed is fixed, and only the more skilled workers can be employed to barely improve the work efficiency. Recently, an automatic glove overlocking machine has appeared on the market. Its working process is as follows: put the glove under the presser foot of the sewing machine head, start the motor and complete the overlocking, and remove the glove by the action of the glove grabbing device. , the whole line device moves the overlocking line to the trimming position, and the thread trimming device acts to cut the overlocking line. However, the design of each device is too complicated. The power source of the thread trimming device is linked with the motor, and the thread trimming action is always performed when the motor is started for overlocking, so it is easy to cut the normal overlocking thread on the glove, resulting in the disconnection of the overlocking thread. The wrist of the glove is loose, resulting in excessive glove waste and increasing the production cost. On the other hand, thread trimmers that are always in operation with overlock have a very short service life due to their long operating time. In order to solve the problem that the thread trimming device cuts the overlock line, some companies designed a shrapnel on the thread trimming position of the thread trimmer. The thread left on the glove after the thread is relatively long, which seriously affects the appearance and quality of the glove.

SUMMARY OF THE INVENTION

Purpose of the present invention: In order to overcome the defects of the prior art, the present invention provides a thread trimming device for a glove overlocking machine, which solves the problems that the glove trimming is easy to cut the overlocking thread and the thread end is too long at this stage.

The technical scheme of the present invention: the glove overlocking machine includes a worktable, a frame and a control system, and the thread trimming device includes a fixed trimming blade, a movable trimming blade, a link mechanism and a suction mechanism, and the suction mechanism includes a A suction frame and a suction drive, the suction frame is installed on one side of the worktable, and the suction frame is provided with a suction port for inhaling the glove seam thread, and the suction port is aligned with the work The fixed trimming blade is fixed on the suction frame, and one side of the fixed trimming blade fits the glove wrist part processed on the worktable, and the movable trimming blade is hingedly installed on the suction frame. On the frame, the trimming range of the fixed trimming blade and the movable trimming blade is located at the suction port to form the trimming of the glove seaming thread in the suction port; the linkage mechanism is connected with the movable trimming blade, and the connecting rod The mechanism is electrically connected with the control system, and the linkage mechanism drives the movable trimming blade to perform repeated trimming actions after the glove is finished locking the edge under the control of the control system.

Using the above technical solution, the thread ends are sucked into the orifice, and the movable trimming blade moves to trim the thread ends. Since the thread ends absorbed by the suction mechanism and the fixed trimming blades are attached to the wrist of the gloves processed on the worktable, the thread ends on the gloves are trimmed very well. Short, almost no excess thread can be seen, eliminating the impact of the glove overlock thread on the aesthetics and improving the appearance quality of the glove; in addition, the movable trimmer blade has an independent power source, and the movable trimmer blade only trims after the glove is overlocked. , The trimming action is not performed during the sewing process, which effectively avoids cutting the normal overlocking line, improves the qualified rate of glove overlocking, reduces the production cost, and at the same time, the service life of the two trimming blades is significantly prolonged, the overall structure is also simple in design, and the number of parts is small. , easy to process; effectively improve the work efficiency, reduce the labor intensity of the staff, and can be applied to the existing glove sewing machine for modification.

A further arrangement of the present invention: the link mechanism includes a first rocking rod, a second rocking rod, a connecting piece and a link driving piece, the link driving piece is fixed on the frame, and the output of the link driving piece is The shaft is fixed to one end of the connecting piece, the other end of the connecting piece is hinged with one end of the first swing rod, the other end of the first swing rod is hinged with one end of the second swing rod, and the second swing rod is hinged. The other end is fixedly connected with the movable trimming blade, and the first swing rod and the second swing rod form an included angle.

With the above-mentioned further arrangement, the connecting rod driving element drives the first swing rod to swing repeatedly, and the second swing rod drives the movable trimming blade to repeatedly move around its hinged end, thereby constituting the repeated trimming action of the movable trimming blade.

In a further arrangement of the present invention, the connecting rod driving member is an air cylinder, a hydraulic cylinder or a solenoid valve.

With the above-mentioned further arrangement, a variety of driving elements can be selected as the power source, and the scope of application is wide.

The present invention further provides that the fixed trimmer blade is located on the inner side of the movable trimmer blade, and the outer side of the movable trimmer blade is provided with a pressing mechanism for increasing the closeness of the movable trimmer blade to the fixed trimmer blade.

By adopting the above-mentioned further arrangement, the pressing mechanism can increase the closeness between the movable trimming blade and the fixed trimming blade, so that the trimming is sharper, and the thread ends can be effectively cut off.

The present invention is further provided: the pressing mechanism includes a clip, a spring, a screw and a fixing arm; the clip is in the shape of an "n" shape, one side of which is fixed on the fixed trimming blade, and the other side is fixed on the fixed trimming blade. The film wrapping acts on the outer side of the movable trimming blade; the fixed arm is fixed on the suction frame, the screw thread penetrates the fixed arm, the spring is covered on the screw, and the two ends of the spring are respectively abutted on the fixed arm. arm and clip.

With the above-mentioned further arrangement, the spring enhances the clamping effect of the clip on the movable trimming blade, so that the movable trimming blade is more tightly pressed on the fixed trimming blade, so as to ensure that the short thread ends can also be cut off.

A further arrangement of the present invention is that the control system can selectively control whether the link mechanism drives the movable trimming blade to perform repeated trimming actions before the glove starts to hem.

With the above-mentioned further settings, according to the needs of the glove, it is possible to choose whether to trim the glove before the glove starts to be seamed. .

The present invention further provides that: the control system can adjust the action frequency of the control link mechanism in one cycle.

By adopting the above-mentioned further setting, the action frequency of the linkage mechanism can be adjusted according to the thread length and material of the glove overlock thread, thereby adjusting the trimming frequency of the movable trimming blade, so as to achieve the purpose of trimming to the shortest overlock thread end, and avoid trimming. Excessive use will shorten the life of both trimming blades.

Description of drawings

1 is a schematic structural diagram of a specific embodiment of the present invention;

2 is a top view of a specific embodiment of the present invention;

Among them, the fixed trimming blade 1, the movable trimming blade 2, the link mechanism 3, the suction mechanism 4, the worktable 5, the suction frame 41, the suction port 411, the first swing rod 31, the second swing rod 32, The connecting piece 33 , the connecting rod driving piece 34 , the pressing mechanism 6 , the clip 61 , the spring 62 , the screw 63 , and the fixing arm 64 .

Detailed ways

As shown in Figures 1 and 2, a thread trimming device for a glove overlocking machine includes a worktable 5, a frame and a control system. The wrist of the glove is placed on the worktable 5, and the lock The glove rotates around the worktable 5 during the edge. The thread trimming device includes a fixed trimming blade 1, a movable trimming blade 2, a link mechanism 3 and a suction mechanism 4. The suction mechanism 4 includes a suction frame 41 and a suction drive member, and the suction frame 41 is fixedly installed on the workbench. A suction port 411 is opened on one side of the plate 5 and on the suction frame 41. The suction port 411 is aligned with the edge-locking working position of the worktable 5. The suction drive part is connected to the suction frame 41, and the suction frame 41 is a hollow structure. When the inhalation driving member is driven, it can provide power to the inhalation hole 411, and the inhalation hole 411 can suck the glove seam thread. The fixed trimmer blade 1 is fixed on the suction frame 41 , the outer side of the fixed trimmer blade 1 fits the glove wrist cuff processed on the worktable 5 , and the inner side of the fixed trimmer blade 1 fits the movable trimmer blade 2 . The movable trimmer blade 2 is hingedly mounted on the suction frame 41, and the cutting edges of the fixed trimmer blade 1 and the movable trimmer blade 2 are on the suction port 411, so that their trimming range is located at the suction port 411, so that the suction port 411 can The air port 411 sucks in the trim of the glove seam thread. The linkage mechanism 3 is connected with the movable trimming blade 2, and the linkage mechanism 3 is electrically connected with the control system. After the glove is locked, the linkage mechanism 3 will drive the movable trimming blade 2 to perform repeated displacements, so as to make the fixed trimming The cutting edges of the blade 1 and the movable trimming blade 2 are repeatedly opened and closed to constitute a trimming action. When working, the wrist part of the glove is put on the worktable 5, so that the wrist can fit the fixed trimmer blade 1, the suction driver drives the suction hole 411 to suck the thread end, and the link mechanism 3 drives the movable trimmer blade 2 to move, Cut the end of the thread at the suction port 411 .

The link mechanism 3 includes a first rocker rod 31, a second rocker rod 32, a connecting member 33 and a link driving member 34. The first rocker rod 31 is installed above the suction rack 41, and the second rocker rod 32 is vertically mounted on the On one side of the outer side of the movable trimming blade 2, the connecting rod driving member 34 is fixed on the frame, and the output shaft of the connecting rod driving member 34 is fixed with one end of the connecting member 33, and the other end of the connecting member 33 is connected with the first swing rod 31. One end is hinged, the other end of the first swing rod 31 is hinged with one end of the second swing rod 32, the other end of the second swing rod 32 is fixedly connected with the movable trimming blade 2, the first swing rod 31 and the second swing rod 32 form an angle. The connecting rod driver 34 may be an air cylinder, a hydraulic cylinder or a solenoid valve. Taking the air cylinder as an example, the piston rod of the air cylinder is repeatedly extended and retracted, which drives the first swing rod 31 and the second swing rod 32 to swing, so that the movable trimming blade 2 moves up and down repeatedly around its hinged end with the suction frame 41, thereby fixing the trimming blade 1. And the cutting edge of the movable trimming blade 2 will open and close repeatedly.

The fixed trimming blade 1 is located on the inner side of the movable trimming blade 2 , and the outer side of the movable trimming blade 2 is provided with a pressing mechanism 6 . The pressing mechanism 6 includes a clip 61, a spring 62, a screw 63 and a fixed arm 64; the clip 61 is in the shape of an "n" shape, one side of which is fixed on the fixed trimming blade 1, and the other side is attached On the outer side of the movable trimmer blade 2 , the clip 61 has a wrapping effect on the fixed trimmer blade 1 and the movable trimmer blade 2 , so that the movable trimmer blade 2 is initially attached to the fixed trimmer blade 1 . The fixing arm 64 is fixed on the suction frame 41 , the screw 63 thread penetrates the fixing arm 64 , the spring 62 is sheathed on the screw 63 , and the two ends of the spring 62 abut on the fixing arm 64 and the clip 61 respectively. The screw 63 is used to limit the spring 62, and the elastic force of the spring 62 acts on the movable trimming blade 2, further making the movable trimming blade 2 closely adhere to the fixed trimming blade 1, so that the cutting edges of both are sharper, which is beneficial to trimming.

Through the control selection of the control system, it can be selected whether to activate the link mechanism 3 to drive the movable trimming blade 2 to perform repeated trimming actions before the glove starts to be seamed, so as to trim the seaming thread before the glove is seamed. For the case where the glove can be completely cut off after the glove is seamed, the link mechanism 3 can be selected not to be activated before the glove begins to be seamed. The control system can also adjust the action frequency of the control link mechanism 3 in one cycle, that is, the action frequency of the link mechanism 3 in each cycle, so that the trimming frequency of the movable trimming blade 2 can be adjusted. In this way, the number of movements of the movable trimming blade 2 can be moderately reduced on the premise of trimming to the required shortest overlock thread, thereby further prolonging the service life of the two trimming blades.

Claims (7)

1. The utility model provides a line head trimming means of gloves machine of lockstitching a border, gloves machine of lockstitching a border including work platen, frame and control system, its characterized in that: the string head trimming device comprises a fixed trimming blade, a movable trimming blade, a connecting rod mechanism and an air suction mechanism, wherein the air suction mechanism comprises an air suction frame and an air suction driving piece, the air suction frame is arranged on one side of the working table plate and is provided with an air suction hole for sucking the string head of the glove overlock, and the air suction hole is aligned to the overlock working position of the working table plate; the fixed trimming blade is fixed on the air suction frame, one side surface of the fixed trimming blade is attached to the glove wrist opening processed on the working table plate, the movable trimming blade is hinged to the air suction frame, and the trimming range of the fixed trimming blade and the movable trimming blade is located at the air suction hole to trim the air suction hole to suck the glove locking line head; the connecting rod mechanism is connected with the movable trimming blade and is electrically connected with the control system, and the connecting rod mechanism drives the movable trimming blade to perform repeated trimming actions after the glove is subjected to edge locking under the control of the control system.

2. The thread end trimming device of a glove stitcher according to claim 1, wherein: the connecting rod mechanism comprises a first oscillating rod, a second oscillating rod, a connecting piece and a connecting rod driving piece, the connecting rod driving piece is fixed on the rack, an output shaft of the connecting rod driving piece is fixed to one end of the connecting piece, the other end of the connecting piece is hinged to one end of the first oscillating rod, the other end of the first oscillating rod is hinged to one end of the second oscillating rod, the other end of the second oscillating rod is fixedly connected with the movable trimming blade, and an included angle is formed between the first oscillating rod and the second oscillating rod.

3. The thread end trimming device of a glove stitcher according to claim 2, wherein: the connecting rod driving part is an air cylinder, a hydraulic cylinder or an electromagnetic valve.

4. The thread end trimming device of a glove stitcher according to claim 1 or 3, wherein: the fixed trimming blade is positioned on the inner side surface of the movable trimming blade, and the outer side surface of the movable trimming blade is provided with a pressing mechanism for increasing the clinging degree of the movable trimming blade to the fixed trimming blade.

5. The thread end trimming device of a glove stitcher according to claim 4, wherein: the pressing mechanism comprises a clamping piece, a spring, a screw and a fixed arm; the clamping pieces are n-shaped, one side piece is fixed on the fixed trimming blade, and the other side piece is clamped and acts on the outer side face of the movable trimming blade; the fixing arm is fixed on the air suction frame, the screw threads penetrate through the fixing arm, the spring is sleeved on the screw, and two ends of the spring are respectively abutted to the fixing arm and the clamping piece.

6. The thread end trimming device of a glove stitcher according to claim 1 or 3, wherein: the control system can selectively control whether the connecting rod mechanism drives the movable trimming blade to perform repeated trimming actions before the gloves begin to be trimmed.

7. The thread end trimming device of a glove stitcher according to claim 6, wherein: the control system can adjust the action frequency of one period of the control link mechanism.

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