CN209568220U - A kind of cutter structure of drum-type sewing machine - Google Patents

Abstract

A kind of cutter structure of drum-type sewing machine, including driving mechanism, push rod, stationary knife and moving knife, stationary knife and moving knife are respectively positioned on the lower section of the needle plate of sewing machine, stationary knife is fixed on needle plate, push rod is mounted in the drive output of the driving mechanism, moving knife is mobile relative to stationary knife under the drive of push rod, it is characterized by: moving knife is rotatably arranged on needle plate, rotating block is installed in needle plate bottom, it is rotatably arranged in the middle part of rotating block on the needle plate, the first end of rotating block and the push rod are rotatablely connected, the second end of rotating block and the first end of connecting rod are rotatablely connected, the second end of connecting rod is rotatably connected on the moving knife.Utility model has the advantages that the moving knife of the cutter structure of the drum-type sewing machine is rotatably arranged below needle plate, push rod can drive moving knife to rotate relative to stationary knife by rotating fast and connecting rod, to property cut suture, and the cutter structure is simple, reasonable, can be well matched with needle plate use.

Description

A kind of cutter structure of drum-type sewing machine

Technical field

The utility model relates to a kind of cutter structures, more particularly, to a kind of cutter structure of drum-type sewing machine.

Background technique

Sewing machine is formed one or more kinds of stitchings on sewing, is made one layer or more with one or more sewing threads The machine that layer sewing interweaves or unite by a seam.Currently, being mostly used automatic when the continuity of high-volume clothing cutting plate sews stitching Template sewing machine.Template sewing machine mainly includes sewing machine horn, head of sewing machine, tugboat and workbench, and working principle is substantially For template to be placed on the needle plate on workbench, lower cutter locating piece corresponding with upper cutter is set, and the two is formed on needle plate Cutter, is arranged sewing corresponding with cutter region in template, roller compression in template outer edge and its pass through Rotate driving module is moved centered on cutter along its region of sewing, according to the wiring path preset in template The cloth being clipped in auxiliary template is sewed and processed.

For some annular workpieces, needs to use specific drum-type sewing machine, be provided with rotation on drum-type sewing machine Rotaring sleeve, annular workpieces are fixed on turnbarrel and rotate with turnbarrel, due to drum-type sewing machine and existing common There are larger differences in structure for template sewing machine, and therefore, the cutter structure of existing template sewing machine is not particularly suited for drum-type seam It threads machine.

Utility model content

Technical problem to be solved in the utility model be for above-mentioned state of the art, provide a kind of structure it is simple, Suture cuts the cutter structure of convenient drum-type sewing machine.

Technical solution adopted by the utility model to solve the above technical problems is as follows: the cutter knot of the drum-type sewing machine Structure, including driving mechanism, push rod, stationary knife and moving knife, the stationary knife and moving knife are respectively positioned on the lower section of the needle plate of sewing machine, described fixed Knife is fixed on needle plate, and the push rod is mounted in the drive output of the driving mechanism, drive of the moving knife in push rod It is lower mobile relative to stationary knife, it is characterised in that: the moving knife is rotatably arranged on the needle plate, is equipped with rotation in needle plate bottom Block is rotatably arranged on the needle plate in the middle part of the rotating block, and the first end of rotating block and the push rod are rotatablely connected, rotation The second end of block and the first end of connecting rod are rotatablely connected, and the second end of the connecting rod is rotatably connected on the moving knife.

In order to enable moving knife smooth rotation, have in the bead formed on back of the needle plate for accommodating the connecting rod and to connect The groove of extension bar offer rotation space.

Rotating block can have a variety of structures, it is preferable that the rotating block includes main rotating block and is fixed on main rotating block Secondary rotating block, it is described pair rotating block have convex be set to the main rotating block male part, the first end of the connecting rod It is rotatably connected in the male part.

Secondary rotating block can be fixed on main rotating block with various ways, it is preferable that the pair rotating block and main rotating block It mutually reclines and the middle part of secondary rotating block is fixedly connected by fixed pin with the main rotating block.

Rotating block and moving knife can be there are many mounting structures, it is preferable that the first mounting hole and the are provided on the needle plate The middle part of two mounting holes, the rotating block is mounted on first mounting hole by the first pin shaft, and the moving knife passes through second Pin shaft is mounted on second mounting hole.

Further preferably, pin hole is provided on the needle plate, close to the pin hole, the moving knife is set the edge of a knife of the stationary knife In the lower section of the stationary knife, and moving knife can swing back and forth below pin hole and be cut off and the cooperation with stationary knife from pin hole and be worn The suture crossed.

Driving mechanism can have a variety of structures, it is preferable that the driving mechanism includes electric machine support, motor, the first cone Gear, second bevel gear, shaft and centering block, the motor are mounted on electric machine support, and the first bevel gear is mounted on described On the output shaft of motor, the second bevel gear is meshed with first bevel gear, and the shaft is vertically provided at the motor branch On frame, the second bevel gear is mounted in the shaft, and the first end of the centering block is mounted in the shaft and and shaft It rotates synchronously, the push rod is horizontally disposed, and the second end of the centering block and the push rod are rotatablely connected.

Compared with the prior art, the advantages of the utility model are: the moving knife of the cutter structure of the drum-type sewing machine turns Dynamic to be arranged below needle plate, push rod can drive moving knife to rotate relative to stationary knife by rotating fast and connecting rod, so that property cut stitches Line, and the cutter structure is simple, reasonable, can be well matched with needle plate use.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of the utility model embodiment；

Fig. 2 is the partial exploded view of the utility model embodiment；

Fig. 3 is partial structural diagram of the utility model embodiment before cutting suture；

Fig. 4 is partial structural diagram of the utility model embodiment after cutting suture.

Specific embodiment

The utility model is described in further detail below in conjunction with figure embodiment.

As shown in Figures 1 to 4, the cutter structure of the drum-type sewing machine of the present embodiment, including driving mechanism 1, push rod 2, The components such as stationary knife 3 and moving knife 4, wherein stationary knife 3 and moving knife 4 are respectively positioned below the needle plate 5 of sewing machine, and needle plate 5 is fixed plate, In It is provided with the pin hole 53 matched with the head of sewing machine (in figure for show) on needle plate 5, stationary knife 3 is fixed on needle plate 5 and stationary knife 3 Close to pin hole 53, moving knife 4 is set to the lower section of stationary knife 3 and is rotatably arranged on needle plate 5 edge of a knife 31.One end of push rod 2 is mounted on drive In the drive output of motivation structure 1, the other end of push rod 2 stretches to the lower section of needle plate 5, and moving knife 4 can be under the drive of push rod 2 The lower section of pin hole 53 swings back and forth, and moving knife 4 is rotated relative to stationary knife 3, and the edge of a knife 31 of stationary knife 3 can be made after moving knife 4 and the cooperation of stationary knife 3 Cut off the suture (showing in figure) passed through from pin hole 53.

It is provided with the first mounting hole 51 and the second mounting hole 52 on needle plate 5, be additionally provided with rotating block 6 in 5 bottom of needle plate and connects The middle part of extension bar 7, rotating block 6 is mounted on the first mounting hole 51 by the first pin shaft 8 and is rotatablely connected with needle plate 5, rotating block 6 First end and push rod 2 be rotatablely connected, the first end of the second end of rotating block 6 and connecting rod 7 is rotatablely connected, the of connecting rod 7 Two ends are rotatably connected on moving knife 4.Moving knife 4 is mounted on the second mounting hole 52 by the second pin shaft 9.In order to avoid needle plate 5 with Connecting rod 7 generates interference, has in the bead formed on back of needle plate 5 for accommodating connecting rod 7 and providing the recessed of rotation space for connecting rod Slot 50.

In the present embodiment, rotating block 6 includes the main secondary rotating block 62 rotating block 61 and be fixed on main rotating block, pair rotation Block 62 mutually reclines with main rotating block 61 and the middle part of secondary rotating block 62 is fixedly connected by fixed pin 63 with main rotating block 61.It is secondary The male part 621 that there is rotating block 62 convex to be set to main rotating block 61, the first end of connecting rod 7 are rotatably connected on male part On 621.

The driving mechanism 1 of the present embodiment includes electric machine support 11, motor 12, first bevel gear 13, second bevel gear 14, turns Axis 15 and centering block 16.Wherein, motor 12 is mounted on electric machine support 11, and first bevel gear 13 is mounted on the output shaft of motor 12 On, second bevel gear 14 is meshed with first bevel gear 13, and shaft 15 is vertically provided on electric machine support 11, second bevel gear 14 are mounted in shaft 15, and the first end of centering block 16 is mounted in shaft 15 and rotates synchronously with shaft, and push rod 2 is horizontally disposed, The second end and push rod 2 of centering block 16 are rotatablely connected.

When work, motor 12 drives first bevel gear 13 to rotate, and second bevel gear 14 is under the drive of first bevel gear 13 Rotation, shaft 15 is rotated synchronously with second bevel gear 14, and with the rotation of shaft 15, centering block 16 is made to swing and push rod 2 is driven to move Dynamic, push rod 2 drives moving knife 4 to rotate by link block 6, connecting rod 7, and the moving knife 4 of rotation is matched with stationary knife 3, passes through needle plate The suture cutting of 5 53 lower section of pin hole.

Above description is merely a prefered embodiment of the utility model, it is noted that for those of ordinary skill in the art For, under the premise of not departing from the principles of the present invention, a variety of remodeling or improvement can be carried out to the utility model, for example, Driving mechanism is not limited to the driving mechanism in the present embodiment, can also use the driving mechanism of other structures, these equal quilts It is considered as within the protection scope of the utility model.

Claims (7)

1. a kind of cutter structure of drum-type sewing machine, including driving mechanism (1), push rod (2), stationary knife (3) and moving knife (4), institute It states stationary knife (3) and moving knife (4) is respectively positioned below the needle plate (5) of sewing machine, the stationary knife (3) is fixed on needle plate (5), described to push away Bar (2) is mounted in the drive output of the driving mechanism (1), the moving knife (4) opposite stationary knife under the drive of push rod (2) (3) mobile, it is characterised in that: the moving knife (4) is rotatably arranged on the needle plate (5), is equipped with rotation in needle plate (5) bottom Block (6) is rotatably arranged on the needle plate (5) in the middle part of the rotating block (6), the first end of rotating block (6) and the push rod (2) it being rotatablely connected, the second end of rotating block (6) and the first end of connecting rod (7) are rotatablely connected, and the second of the connecting rod (7) End is rotatably connected on the moving knife (4).

2. the cutter structure of drum-type sewing machine according to claim 1, it is characterised in that: the back in the needle plate (5) Face is formed for accommodating the connecting rod (7) and providing the groove (50) of rotation space for connecting rod.

3. the cutter structure of drum-type sewing machine according to claim 1, it is characterised in that: the rotating block (6) includes There is convex to be set to institute for main rotating block (61) and the secondary rotating block (62) being fixed on main rotating block, the pair rotating block (62) The male part (621) of main rotating block (61) is stated, the first end of the connecting rod (7) is rotatably connected on the male part (621).

4. the cutter structure of drum-type sewing machine according to claim 3, it is characterised in that: it is described pair rotating block (62) with Main rotating block (61) mutually reclines and the middle part of secondary rotating block (62) is fixed by fixed pin (63) and the main rotating block (61) Connection.

5. the cutter structure of drum-type sewing machine according to claim 1, it is characterised in that: opened on the needle plate (5) There are the first mounting hole (51) and the second mounting hole (52), the middle part of the rotating block (6) is mounted on described by the first pin shaft (8) On first mounting hole (51), the moving knife (4) is mounted on second mounting hole (52) by the second pin shaft (9).

6. the cutter structure of drum-type sewing machine according to claim 1, it is characterised in that: opened on the needle plate (5) Have pin hole (53), for the edge of a knife (31) of the stationary knife (3) close to the pin hole (53), the moving knife (4) is set to the stationary knife (3) Lower section, and moving knife (4) can swing back and forth below pin hole (53) and be cut off by the cooperation with stationary knife (3) from pin hole (53) The suture passed through.

7. according to claim 1 to the cutter structure of drum-type sewing machine described in any claim in 6, it is characterised in that: The driving mechanism (1) includes electric machine support (11), motor (12), first bevel gear (13), second bevel gear (14), shaft (15) it is mounted on electric machine support (11) with centering block (16), the motor (12), the first bevel gear (13) is mounted on described On the output shaft of motor (12), the second bevel gear (14) is meshed with first bevel gear (13), and the shaft (15) is vertical It is arranged on the electric machine support (11), the second bevel gear (14) is mounted on the shaft (15), the centering block (16) First end be mounted on the shaft (15) and rotated synchronously with shaft, the push rod (2) is horizontally disposed, the centering block (16) Second end and the push rod (2) be rotatablely connected.