阅读说明：本技术 一种上下切刀组合装置 (A kind of cutter combination unit up and down ) 是由 焦克山 彭家成 于 2019-09-20 设计创作，主要内容包括：本发明涉及缝纫机械技术领域的一种上下切刀组合装置,包括安装在机架上的上切刀组合件和下定刀组合件；上切刀组合件包括：内置有导轨部件的壳体；安装在壳体上的上气缸；安装在上气缸活塞杆下端的、处于壳体之内且与导轨部件上下活动配合的连接组件；以及安装在连接组件上的、竖直布置的上切刀；下定刀组合件包括：固定在机架上的下支架；旋转轴；下旋转座,下旋转座旋转端通过旋转轴转动连接在下支架上；竖直安装在下旋转座上的、与上切刀配合以剪切布料的下定刀；以及弹性连接下旋转座自由端和下支架的复位弹簧。以使得下定刀能够在剪切时产生适应性旋转摆动,以减轻上切刀和下定刀的相互磨损,提升上切刀和下定刀的使用寿命。(The present invention relates to a kind of cutter combination units, including rack-mounted upper cutter sub-assembly and lower stationary knife sub-assembly up and down of sewing machine technical field；Upper cutter sub-assembly includes: the shell for being built-in with guide rail part；The upper cylinder being mounted on shell；It is mounted on upper cylinder piston-rod lower end, connection component within shell and with the up and down cooperation of guide rail part；And it is mounted on upper cutter on connection component, arranging vertically；Lower stationary knife sub-assembly includes: the lower bracket being fixed on the rack；Rotary shaft；Lower rotating seat, lower rotating seat round end are rotatably connected on lower bracket by rotary shaft；It is vertically installed at lower stationary knife on lower rotating seat, that cloth is sheared with upper cutter cooperation；And under elastic connection rotating seat free end and lower bracket reset spring.So that lower stationary knife can generate adaptability rotary oscillation in shearing, to mitigate the mutual abrasion of upper cutter and lower stationary knife, the service life of upper cutter and lower stationary knife is promoted.)

1. a kind of cutter combination unit, including rack-mounted upper cutter sub-assembly and lower stationary knife sub-assembly up and down, special Sign is:

The upper cutter sub-assembly includes:

It is built-in with the shell (1) of guide rail part；

It is mounted on upper cylinder (2) on shell (1), arranging vertically, piston rod is downward；

Be mounted on upper cylinder (2) piston-rod lower end, within shell (1) and the connection with the up and down cooperation of guide rail part Component；And

It is removably mounted on upper cutter (11) on connection component, arranging vertically；

The lower stationary knife sub-assembly includes:

The lower bracket (16) being fixed on the rack；

The rotary shaft (15) being vertically arranged；

Lower rotating seat (13), lower rotating seat (13) round end are rotatably connected on lower bracket (16) by rotary shaft (15)；

It is vertically installed at lower stationary knife (12) on lower rotating seat (13), that cloth is sheared with upper cutter (11) cooperation；And

The reset spring (14) of rotating seat (13) free end and lower bracket (16) under elastic connection.

2. a kind of cutter combination unit up and down according to claim 1, it is characterised in that: under described from vertical view visual angle Rotating seat (13) is 0-4 ° to the inclined angle in upper cutter (11) direction before shearing.

3. a kind of cutter combination unit up and down according to claim 1, it is characterised in that: the connecting component includes and shell The intermediate active block (3) that body (1) inner wall is slidably matched, the intermediate active block (3) also cooperate with the vertical activity of guide rail part, institute Stating connecting component further includes the upper cutter connecting plate (10) being removably mounted on intermediate active block (3), and the upper cutter connects Fishplate bar (10) lower end activity is pierced by shell (1) and is detachably connected with upper cutter (11).

4. a kind of cutter combination unit up and down according to claim 3, it is characterised in that: the guide rail part includes one solid Fixed way block (5) of the Dingan County on shell (1) inner wall, further include one touch shell (1) inner wall, can be in the horizontal direction The adjustable guide rail block (6) of adjusting position, the fixed way block (5) and adjustable guide rail block (6) are vertical to be extended, described Upper cutter connecting plate (10) is slidably matched with fixed way block (5), adjustable guide rail block (6), the fixed way block (5) Intermediate active block (3) is clamped with adjustable guide rail block (6) and is cooperated respectively with two opposite side activities of intermediate active block (3), Matched slack adjuster members are installed with adjustable guide rail block (6), to adjust adjustable guide rail block (6) on the shell (1) With the gap between fixed way block (5).

5. a kind of cutter combination unit up and down according to claim 4, it is characterised in that: the slack adjuster members include Several abutting against screw rod (8) along the arrangement of adjustable guide rail block (6) length direction, it is described to abut against (8) one sections of screw rod and penetrate shell (1) To abut against adjustable guide rail block (6) side wall, so that adjustable guide rail block (6) and fixed way block (5) clamp intermediate active block (3), and the screw rod (8) that abuts against is threadedly coupled with the wall of shell (1), it is described abut against another section of screw rod (8) in shell (1) it It is outer and be provided with manipulatable end, it is described abut against be set on screw rod (8) for lock self-position, except shell (1) Locking bar nut (7).

6. a kind of cutter combination unit up and down according to claim 4, it is characterised in that: the intermediate active block (3) Two opposite sides, which are equipped with, erects straight arranged several idler wheels (4), and the idler wheel (4) is rotatably mounted on intermediate active block (3), and two Idler wheel (4) are arranged to cooperate with fixed way block (5) side, (6) one side roll of adjustable guide rail block respectively.

7. a kind of cutter combination unit up and down according to claim 3, it is characterised in that: shell (1) inner wall is equipped with The intermediate sliding slot (1a) extended vertically, the intermediate active block (3) are slidably matched with intermediate sliding slot (1a).

8. a kind of cutter combination unit up and down according to claim 4, it is characterised in that: the adjustable guide rail block (6) On be at least threaded with about two guider screws being spaced apart (9), the upper cutter connecting plate (10) is equipped with slotted hole The length direction of the pilot hole (10a) of structure, the pilot hole (10a) is parallel to the direction of motion of upper cutter (11), described to lead It is installed in pilot hole (10a) to the spiral shell head movement of screw (9).

9. a kind of cutter combination unit up and down according to claim 5, it is characterised in that: several abut against screw rod (8) are along can The arrangement of mode way block (6) equal spacing in length direction.

10. a kind of cutter combination unit up and down described in any one of -9 according to claim 1, it is characterised in that: on described The lower part cutting edge of cutter (11) is incline structure, and the relatively close rotary shaft of lower part cutting edge least significant end of upper cutter (11) (15)。

Technical field

The present invention relates to sewing machine technical fields, are a kind of shears that can shear cloth up and down specifically.

Background technique

Currently, during cutting cloth, a kind of cutting mode is to cut up and down, is cut using on rack-mounted Knife sub-assembly and lower stationary knife sub-assembly cutting cloth together, wherein upper cutter sub-assembly is driven by power unit and is constantly carried out up and down Movement, lower stationary knife sub-assembly are then fixed on the position below upper cutter sub-assembly.But with the extension of use time, it above cuts Mutual abrasion is inevitably resulted between knife sub-assembly and lower stationary knife sub-assembly, influences cutting-tool's used life.

Summary of the invention

The object of the present invention is to provide a kind of cutters up and down to combine the unit, and fits so that lower stationary knife can be generated in shearing Answering property rotary oscillation, to mitigate the mutual abrasion of upper cutter and lower stationary knife.

The object of the present invention is achieved like this: it is a kind of up and down cutter combination unit, including it is rack-mounted on cut Knife sub-assembly and lower stationary knife sub-assembly；

The upper cutter sub-assembly includes:

It is built-in with the shell of guide rail part；

It is mounted on upper cylinder on shell, arranging vertically, piston rod is downward；

It is mounted on upper cylinder piston-rod lower end, connection group within shell and with the up and down cooperation of guide rail part Part；And

It is removably mounted on upper cutter on connection component, arranging vertically；

The lower stationary knife sub-assembly includes:

The lower bracket being fixed on the rack；

The rotary shaft being vertically arranged；

Lower rotating seat, the lower rotating seat round end are rotatably connected on lower bracket by rotary shaft；

It is vertically installed at lower stationary knife on lower rotating seat, that cloth is sheared with upper cutter cooperation；And

The reset spring of rotating seat free end and lower bracket under elastic connection.

It further, is 0- to the inclined angle in upper cutter direction before shearing from the lower rotating seat from visual angle is overlooked 4°。

Further, the connecting component includes the intermediate active block being slidably matched with inner walls, the intermediate active Block also cooperates with the vertical activity of guide rail part, the connecting component further include be removably mounted on intermediate active block on cut Knife connecting plate, the upper cutter connecting plate lower end activity are pierced by shell and are detachably connected with upper cutter.

Further, the guide rail part includes the fixed way block in a fixed installation on the inner wall of the housing, further includes One touch inner walls, can adjusting position in the horizontal direction adjustable guide rail block, the fixed way block and adjustable Way block extends vertically, and the upper cutter connecting plate is slidably matched with fixed way block, adjustable guide rail block, the fixation Intermediate active block is clamped and is cooperated respectively with two opposite side activities of intermediate active block, institute by formula way block and adjustable guide rail block It states and slack adjuster members matched with adjustable guide rail block is installed on shell, to adjust adjustable guide rail block and fixed guide rail Gap between block.

Further, the slack adjuster members include it is several along adjustable guide rail block length direction arrangement abut against spiral shell Bar, it is described to abut against one section of screw rod and penetrate shell to abut against adjustable guide rail block side wall, so as to adjustable guide rail block and fixed lead Rail block clamps intermediate active block, and the screw rod that abuts against is threadedly coupled with the wall of shell, described to abut against another section of screw rod in shell Except body and it is provided with manipulatable end, described abut against is set with for locking self-position, lock except shell on screw rod Stem nut.

Further, two opposite sides of the intermediate active block, which are equipped with, erects straight arranged several idler wheels, and the idler wheel turns It is mounted on intermediate active block dynamicly, two rows of idler wheels are matched with fixed way block side, one side roll of adjustable guide rail block respectively It closes.

Further, the inner walls are equipped with the intermediate sliding slot extended vertically, the intermediate active block and intermediate sliding slot It is slidably matched.

Further, about two guider screws being spaced apart at least are threaded on the adjustable guide rail block, The upper cutter connecting plate is equipped with the pilot hole of oval pore structure, and the length direction of the pilot hole is parallel to the movement of upper cutter The spiral shell head movement in direction, the guider screw is installed in pilot hole.

Further, several screw rods that abut against equidistantly are arranged along adjustable guide rail block length direction.

Further, the lower part cutting edge of the upper cutter is incline structure, and the lower part cutting edge least significant end phase of upper cutter To close to rotary shaft.

The beneficial effects of the present invention are:

1) enable to lower stationary knife that can generate adaptability rotary oscillation in shearing, to mitigate upper cutter and lower stationary knife Mutually abrasion promotes upper cutter and lower stationary knife service life, and after the completion of shearing, under the rebound effect of reset spring, Lower rotating seat can drive rapidly lower stationary knife to reset together；

2) guiding performance of the elevating movement of upper cutter is fine, and intermediate active block is fixed formula way block and adjustable guide rail block It clamps, and intermediate active block and fixed way block, adjustable guide rail block roll and cooperate, and can reduce intermediate active block and go up and down The frictional force generated when movement, meanwhile, the motion guide of intermediate active block can also be protected, and intermediate sliding slot then further adds The strong motion guide of intermediate active block, to ensure the motion guide of upper cutter, further, guider screw with above cut The pilot hole activity of knife connecting plate cooperates, and also plays good guiding role, so that the motion guide performance of upper cutter reaches It is promoted to further；

3) gap between adjustable guide rail block and fixed way block can accurately be adjusted, adjustable adjusting When position in way block horizontal direction, all locking bar nuts can be unscrewed, all screw rods that abut against are threaded in or out, and makes It is equal to obtain all protruded lengths for abutting against screw rod, so that adjustable guide rail block is at vertical state in adjusting afterwards in place, and Achieve the purpose that adjust gap between adjustable guide rail block and fixed way block, so as to adjust adjustable guide rail block with it is fixed Way block is to the clamping tightness of intermediate movable block, so that intermediate active block can swimmingly carry out elevating movement, while With good motion guide.

Detailed description of the invention

Fig. 1 is general assembly drawing of the invention.

Fig. 2 is the schematic diagram of internal structure of shell.

Fig. 3 is the matching relationship schematic diagram of intermediate active block and fixed way block, adjustable guide rail block.

Fig. 4 is the decomposition diagram of lower stationary knife sub-assembly.

Fig. 5 is the cooperation principle sketch for overlooking upper cutter and lower stationary knife under visual angle.

Fig. 6 is the matching relationship schematic diagram of upper cutter connecting plate Yu adjustable guide rail block.

In figure, 1 shell, the centre 1a sliding slot, 2 upper cylinders, 3 intermediate active blocks, 4 idler wheels, 5 fixed way blocks, 6 is adjustable Way block, 7 locking bar nuts, 8 abut against screw rod, and 9 guider screws, 10 upper cutter connecting plates, 10a pilot hole, 11 upper cutters, 12 is lower fixed Knife, 13 lower rotating seats, 14 reset springs, 15 rotary shafts, 16 lower brackets, 17 cloth support tables.

Specific embodiment

The present invention is further described for 1-6 and specific embodiment with reference to the accompanying drawing.

As shown in Figure 1, a kind of cutter combination unit, including rack-mounted upper cutter sub-assembly and lower stationary knife up and down Sub-assembly.

In conjunction with shown in Fig. 2-3, above-mentioned upper cutter sub-assembly includes:

It is built-in with the shell 1 of guide rail part；

It is mounted on upper cylinder 2 on shell 1, arranging vertically, piston rod is downward；

It is mounted on 2 piston-rod lower end of upper cylinder, connection within shell 1 and with the up and down cooperation of guide rail part Component；And

It is removably mounted on upper cutter 11 on connection component, arranging vertically.

In conjunction with shown in Fig. 1,4,5, above-mentioned lower stationary knife sub-assembly includes:

The lower bracket 16 being fixed on the rack；

The rotary shaft 15 being vertically arranged；

Backspin transposase 11 3,3 round end of backspin transposase 11 are rotatably connected on lower bracket 16 by rotary shaft 15；

It is vertically installed at 12 (common knowledge of lower stationary knife on backspin transposase 11 3, that cloth is sheared with the cooperation of upper cutter 11 In lower stationary knife 12 close to cloth support table 17)；And

The reset spring 14 of elastic connection backspin transposase 11 3 free end and lower bracket 16.

In conjunction with shown in Fig. 2,3, above-mentioned connecting component includes the intermediate active block 3 being slidably matched with 1 inner wall of shell, and centre is living Motion block 3 also cooperates with the vertical activity of guide rail part, connecting component further include be removably mounted on intermediate active block 3 on cut Knife connecting plate 10, the 10 lower end activity of upper cutter connecting plate are pierced by shell 1 and are detachably connected with upper cutter 11.In above-mentioned shell 1 Wall is equipped with the intermediate sliding slot 1a extended vertically, and intermediate active block 3 is slidably matched with centre sliding slot 1a.

Above-mentioned guide rail part includes a fixed way block 5 being fixedly mounted on 1 inner wall of shell, further includes one touching shell 1 inner wall of body, can adjusting position in the horizontal direction adjustable guide rail block 6, fixed way block 5 and adjustable guide rail block 6 are equal Vertical to extend, upper cutter connecting plate 10 is slidably matched with fixed way block 5, adjustable guide rail block 6, fixed 5 He of way block Intermediate active block 3 is clamped and is cooperated respectively with two opposite side activities of intermediate active block 3 by adjustable guide rail block 6, pacifies on shell 1 Equipped with slack adjuster members matched with adjustable guide rail block 6, to adjust between adjustable guide rail block 6 and fixed way block 5 Gap.

Above-mentioned slack adjuster members include it is several along 6 equal spacing in length direction of adjustable guide rail block arrangement abut against screw rod 8, It abuts against 8 one sections of screw rod and penetrates shell 1 to abut against 6 side wall of adjustable guide rail block, so that adjustable guide rail block 6 and fixed way block 5 clamp intermediate active block 3, and abut against screw rod 8 and be threadedly coupled with the wall of shell 1, abut against 8 another sections of screw rod except shell 1 And it is provided with manipulatable end, it abuts against and is set on screw rod 8 for locking self-position, locking bar nut 7 except shell 1, Screw rod 8 is abutted against by locking bar nut 7 is tightened to lock.The manipulatable end structure type except shell 1 for abutting against screw rod 8 is more Sample can be screw head structure, directly to be operated using spanner, is also possible to structure with groove, is inserted into using screwdriver Screw rod 8 is abutted against with precession or back-out in groove.

Two opposite sides of above-mentioned intermediate movable block 3, which are equipped with, erects straight arranged several idler wheels 4, and idler wheel 4 is rotatably mounted at On intermediate active block 3, two rows of idler wheels 4 cooperate with fixed 5 side of way block, 6 one side roll of adjustable guide rail block respectively.

As shown in Figure 2,6, about the two guiding spiral shells being spaced apart at least are threaded on above-mentioned adjustable guide rail block 6 Nail 9, upper cutter connecting plate 10 are equipped with the pilot hole 10a of oval pore structure, and the length direction of pilot hole 10a is parallel to upper cutter 11 The direction of motion, the spiral shell head movement of guider screw 9 is installed in pilot hole 10a.

As shown in figure 5, in the present embodiment, the lower part cutting edge of upper cutter 11 is incline structure, and the lower part of upper cutter 11 The relatively close rotary shaft 15 of cutting edge least significant end, in common knowledge, upper cutter 11 and lower stationary knife 12 are necessarily mutually staggered to be formed and be cut Cut gap.In shearing cloth process, cloth is placed on cloth support table 17, the lower part cutting edge least significant end of upper cutter 11 is first Lower stationary knife 12 is contacted, then when upper cutter 11 is in and cuts state entirely, under the abutment action of upper cutter 11, lower stationary knife 12 is driven Backspin transposase 11 3 is rotated to the direction for deviateing upper cutter 11, while 3 compression reseting spring 14 of backspin transposase 11, so that lower fixed Knife 12 can promptly generate small adaptability beat rotation under the abutment action of upper cutter 11, with reduce lower stationary knife 12 with Abrasion between upper cutter 11.Reset spring 14 is the spring with strong elasticity herein, can be rapid when upper cutter 11 rises Ground resets.So the program can adapt to high-frequency shear action.

It specifically, is 0- to the inclined angle in 11 direction of upper cutter before shearing from backspin transposase 11 3 from visual angle is overlooked 4 °, lower stationary knife 12 may make to have enough shearing forces preferably to cut cloth in cutting with upper cutter 11 in this way.

In shearing, the elevating movement guiding performance needs of upper cutter 11 are protected, to guarantee shearing quality.Intermediate active Block 3 and fixed way block 5, adjustable guide rail block 6 roll and cooperate, and can reduce what intermediate active block 3 was generated in elevating movement Frictional force, meanwhile, the motion guide of intermediate active block 3 can also be protected, and intermediate sliding slot 1a then further enhances centre The motion guide of movable block 3, to ensure the motion guide of upper cutter 11, further, guider screw 9 and upper cutter connect The pilot hole 10a activity of fishplate bar 10 cooperates, and also plays good guiding role.

When adjusting the position in 6 horizontal direction of adjustable guide rail block, all locking bar nuts 7 can be unscrewed, will be owned It abuts against screw rod 8 to be threaded in or out, and makes all protruded lengths for abutting against screw rod 8 equal, so that adjustable guide rail block 6 is being adjusted It is at vertical state afterwards in place, and achievees the purpose that adjust gap between adjustable guide rail block 6 and fixed way block 5, So as to adjust the clamping tightness of adjustable guide rail block 6 and 5 pairs of fixed way block intermediate movable blocks 3, so that intermediate active Block 3 can swimmingly carry out elevating movement, while also have good motion guide.It is all when the adjustment is completed, tightening Locking bar nut 7 all abuts against screw rod 8 to lock.

Because rack is common knowledge, therefore omit associated description.

It is the preferred embodiment of the present invention above, those of ordinary skill in the art can also carry out various changes on this basis It changes or improves, under the premise of not departing from the present invention total design, these transformation or improve all should belong to that the present invention claims guarantors Within the scope of shield.