CN211814895U - Upper and lower cutter composite set - Google Patents
Upper and lower cutter composite set Download PDFInfo
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- CN211814895U CN211814895U CN201921570049.5U CN201921570049U CN211814895U CN 211814895 U CN211814895 U CN 211814895U CN 201921570049 U CN201921570049 U CN 201921570049U CN 211814895 U CN211814895 U CN 211814895U
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- guide rail
- cutter
- block
- rail block
- middle movable
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Abstract
The utility model relates to an upper and lower cutter combination device in the technical field of sewing machinery, which comprises an upper cutter combination piece and a lower fixed cutter combination piece which are arranged on a frame; the upper cutter assembly includes: a housing with a built-in guide rail member; an upper cylinder mounted on the housing; the connecting component is arranged at the lower end of the piston rod of the upper cylinder, is positioned in the shell and is in movable fit with the guide rail component up and down; and a vertically arranged upper cutter mounted on the connecting assembly; the lower stationary knife assembly comprises: a lower bracket fixed on the frame; a rotating shaft; the rotating end of the lower rotary seat is rotationally connected to the lower bracket through a rotating shaft; the lower fixed cutter is vertically arranged on the lower rotating seat and is matched with the upper cutter to cut the cloth; and a return spring elastically connecting the free end of the lower swivel base and the lower bracket. So that lower stationary knife can produce the rotatory swing of adaptability when cuting to alleviate the mutual wearing and tearing of cutter and lower stationary knife, promote the life of cutter and lower stationary knife.
Description
Technical Field
The utility model relates to a sewing machine technical field particularly, is a shearing mechanism of cloth can be cuted from top to bottom.
Background
At present, in the process of cutting cloth, there is a cutting mode of up-and-down cutting, in which an upper cutter assembly and a lower fixed cutter assembly mounted on a frame are used together to cut cloth, wherein the upper cutter assembly is driven by a power unit to move up and down continuously, and the lower fixed cutter assembly is fixed at a position below the upper cutter assembly. However, as the service life of the cutter is prolonged, the upper cutter assembly and the lower fixed cutter assembly are inevitably worn mutually, and the service life of the cutter is influenced.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an upper and lower cutter composite set to make down the stationary knife can produce the rotatory swing of adaptability when cuting, in order to alleviate the mutual wearing and tearing of cutter and lower stationary knife.
The purpose of the utility model is realized like this: an upper and lower cutter combination device comprises an upper cutter combination piece and a lower fixed cutter combination piece which are arranged on a rack;
the upper cutter assembly includes:
a housing with a built-in guide rail member;
an upper cylinder mounted on the housing and arranged vertically with its piston rod facing downward;
the connecting component is arranged at the lower end of the piston rod of the upper cylinder, is positioned in the shell and is in movable fit with the guide rail component up and down; and
a vertically arranged upper cutter detachably mounted on the connecting assembly;
the lower stationary knife assembly comprises:
a lower bracket fixed on the frame;
a vertically arranged rotating shaft;
the rotating end of the lower rotary seat is rotatably connected to the lower bracket through a rotating shaft;
the lower fixed cutter is vertically arranged on the lower rotating seat and is matched with the upper cutter to cut the cloth; and
the return spring is elastically connected with the free end of the lower swivel base and the lower bracket.
Further, the angle at which the lower swivel base is inclined in the direction toward the upper cutter before shearing is 0 to 4 ° from a top view.
Furthermore, the connecting assembly comprises a middle movable block in sliding fit with the inner wall of the shell, the middle movable block is vertically and movably matched with the guide rail part, the connecting assembly further comprises an upper cutter connecting plate detachably mounted on the middle movable block, and the lower end of the upper cutter connecting plate movably penetrates through the shell and is detachably connected with the upper cutter.
Further, the guide rail part comprises a fixed guide rail block fixedly arranged on the inner wall of the shell and an adjustable guide rail block attached to the inner wall of the shell and capable of adjusting the position along the horizontal direction, the fixed guide rail block and the adjustable guide rail block vertically extend, the upper cutter connecting plate is in sliding fit with the fixed guide rail block and the adjustable guide rail block, the fixed guide rail block and the adjustable guide rail block clamp the middle movable block and are respectively in movable fit with two opposite sides of the middle movable block, and a gap adjusting part matched with the adjustable guide rail block is arranged on the shell to adjust a gap between the adjustable guide rail block and the fixed guide rail block.
Further, clearance adjustment part includes that a plurality of tops of arranging along adjustable guide rail block length direction lean on the screw rod, the top is leaned on one section screw rod and is penetrated the casing and lean on adjustable guide rail block lateral wall in order to make adjustable guide rail block and fixed guide rail block carry middle movable block, just the top is leaned on the wall threaded connection of screw rod and casing, the top is leaned on screw rod another section department outside the casing and is provided with the control end, the top is leaned on the screw rod on the cover be equipped with be used for locking self position, be in the lock rod nut outside the casing.
Furthermore, a plurality of rollers which are vertically arranged are arranged on two opposite sides of the middle movable block, the rollers are rotatably arranged on the middle movable block, and the two rows of rollers are respectively in rolling fit with one side of the fixed guide rail block and one side of the adjustable guide rail block.
Further, the inner wall of the shell is provided with a middle sliding groove which extends vertically, and the middle movable block is in sliding fit with the middle sliding groove.
Furthermore, at least two guide screws which are distributed at intervals up and down are connected to the adjustable guide rail block in a threaded manner, guide holes with long round hole structures are formed in the upper cutter connecting plate, the length direction of each guide hole is parallel to the movement direction of the upper cutter, and the head parts of the guide screws are movably arranged in the guide holes in a penetrating manner.
Furthermore, a plurality of abutting screws are arranged at equal intervals along the length direction of the adjustable guide rail block.
Furthermore, the lower cutting edge of the upper cutter is of an inclined structure, and the lowest end of the lower cutting edge of the upper cutter is relatively close to the rotating shaft.
The beneficial effects of the utility model reside in that:
1) the lower fixed cutter can generate adaptive rotary swing during shearing so as to reduce the mutual abrasion of the upper cutter and the lower fixed cutter, prolong the service life of the upper cutter and the lower fixed cutter, and after the shearing is finished, the lower rotary seat can rapidly drive the lower fixed cutter to reset together under the resilience action of the reset spring;
2) the guiding performance of the lifting motion of the upper cutter is good, the middle movable block is clamped by the fixed guide rail block and the adjustable guide rail block, and the middle movable block is in rolling fit with the fixed guide rail block and the adjustable guide rail block, so that the friction force generated by the middle movable block during the lifting motion can be reduced, meanwhile, the motion guiding performance of the middle movable block can be ensured, the motion guiding performance of the middle movable block is further enhanced by the middle sliding chute, the motion guiding performance of the upper cutter is ensured, further, the guide screw is in movable fit with the guide hole of the upper cutter connecting plate, a good guiding effect is also achieved, and the motion guiding performance of the upper cutter can be further improved;
3) the clearance between guide rail piece and the fixed guide rail piece with adjustable can obtain accurate regulation, when adjusting the ascending position of guide rail piece horizontal direction with adjustable, can unscrew all locking lever nuts, will all push up to lean on the screw rod to screw in or screw out, and make all push up to lean on the exposed length of screw rod equal, make the guide rail piece with adjustable can be in vertical state after adjusting to target in place, and reach the purpose of adjusting the clearance between guide rail piece with adjustable and the fixed guide rail piece, thereby adjust the guide rail piece with adjustable and the fixed guide rail piece to the centre gripping elasticity degree of middle movable block, make middle movable block can smoothly carry out elevating movement, also have good motion guidance quality simultaneously.
Drawings
Fig. 1 is an assembly diagram of the present invention.
Fig. 2 is a schematic view of the internal structure of the housing.
FIG. 3 is a schematic view of the fit relationship between the middle movable block and the fixed guide rail block and the adjustable guide rail block.
Fig. 4 is an exploded schematic view of the lower stationary knife assembly.
Fig. 5 is a schematic view of the upper and lower stationary blades in a plan view.
Fig. 6 is a schematic view of the matching relationship between the upper cutter connecting plate and the adjustable guide rail block.
In the figure, a shell 1, a middle sliding groove 1a, an upper cylinder 2, a middle movable block 3, rollers 4, a fixed guide rail block 5, an adjustable guide rail block 6, a lock rod nut 7, an abutting screw rod 8, a guide screw 9, an upper cutter connecting plate 10, a guide hole 10a, an upper cutter 11, a lower fixed cutter 12, a lower rotary seat 13, a return spring 14, a rotating shaft 15, a lower support 16 and a cloth supporting table 17 are arranged.
Detailed Description
The invention will be further described with reference to the accompanying figures 1-6 and the specific embodiments.
As shown in fig. 1, an upper and lower cutter assembly includes an upper cutter assembly and a lower fixed cutter assembly mounted on a frame.
As shown in fig. 2 to 3, the upper cutter assembly includes:
a housing 1 having a guide rail member built therein;
an upper cylinder 2 mounted on the housing 1 and arranged vertically with its piston rod facing downward;
the connecting component is arranged at the lower end of the piston rod of the upper cylinder 2, is positioned in the shell 1 and is in up-and-down movable fit with the guide rail component; and
a vertically arranged upper cutter 11 detachably mounted on the connecting assembly.
As shown in fig. 1, 4 and 5, the lower stationary blade assembly includes:
a lower bracket 16 fixed on the frame;
a vertically disposed rotating shaft 15;
a lower rotary seat 13, wherein the rotary end of the lower rotary seat 13 is rotatably connected on a lower bracket 16 through a rotary shaft 15;
a lower stationary blade 12 vertically installed on the lower rotary base 13 and cooperating with the upper blade 11 to cut the cloth (the lower stationary blade 12 is close to the cloth support base 17 in the conventional knowledge); and
a return spring 14 elastically connecting the free end of the lower swivel base 13 and the lower bracket 16.
Combine as shown in fig. 2, 3, above-mentioned coupling assembling includes with the middle movable block 3 of 1 inner wall sliding fit of casing, middle movable block 3 still with the vertical clearance fit of guide rail part, coupling assembling still includes detachably installs the last cutter connecting plate 10 on middle movable block 3, goes up cutter connecting plate 10 lower extreme activity and wears out casing 1 and can dismantle with last cutter 11 and be connected. The inner wall of the shell 1 is provided with a middle sliding groove 1a which extends vertically, and the middle movable block 3 is in sliding fit with the middle sliding groove 1 a.
The guide rail part comprises a fixed guide rail block 5 fixedly arranged on the inner wall of the shell 1 and an adjustable guide rail block 6 which is attached to the inner wall of the shell 1 and can adjust the position along the horizontal direction, the fixed guide rail block 5 and the adjustable guide rail block 6 both vertically extend, an upper cutter connecting plate 10 is in sliding fit with the fixed guide rail block 5 and the adjustable guide rail block 6, the fixed guide rail block 5 and the adjustable guide rail block 6 clamp the middle movable block 3 and are respectively in movable fit with two opposite sides of the middle movable block 3, and a gap adjusting part matched with the adjustable guide rail block 6 is arranged on the shell 1 so as to adjust the gap between the adjustable guide rail block 6 and the fixed guide rail block 5.
The clearance adjusting part comprises a plurality of abutting screw rods 8 which are arranged at equal intervals along the length direction of the adjustable guide rail block 6, one section of the abutting screw rod 8 penetrates through the shell 1 to abut against the side wall of the adjustable guide rail block 6, so that the adjustable guide rail block 6 and the fixed guide rail block 5 clamp the middle movable block 3, the abutting screw rod 8 is in threaded connection with the wall of the shell 1, the other section of the abutting screw rod 8 is positioned outside the shell 1 and is provided with an operating end, a locking rod nut 7 which is used for locking the position of the abutting screw rod 8 and is positioned outside the shell 1 is sleeved on the abutting screw rod 8, and the abutting screw rod 8 is locked by screwing the locking rod nut 7. The operating end of the abutting screw 8 outside the housing 1 has various structural forms, and may be a screw head structure for direct operation with a wrench, or a structure with a groove into which a screwdriver may be inserted to screw in or out the abutting screw 8.
The two opposite sides of the middle movable block 3 are respectively provided with a plurality of rollers 4 which are vertically arranged, the rollers 4 are rotatably arranged on the middle movable block 3, and the two rows of rollers 4 are respectively matched with one side of the fixed guide rail block 5 and one side of the adjustable guide rail block 6 in a rolling way.
As shown in fig. 2 and 6, at least two guide screws 9 are screwed on the adjustable guide rail block 6, the guide screws 9 are distributed at intervals up and down, the upper cutter connecting plate 10 is provided with a guide hole 10a with an oblong hole structure, the length direction of the guide hole 10a is parallel to the movement direction of the upper cutter 11, and the screw head of each guide screw 9 is movably inserted into the corresponding guide hole 10 a.
As shown in fig. 5, in the present embodiment, the lower edge of the upper cutter 11 is inclined, and the lowest end of the lower edge of the upper cutter 11 is relatively close to the rotating shaft 15, and in the conventional knowledge, the upper cutter 11 and the lower fixed cutter 12 are necessarily staggered to form a cutting gap. In the process of cutting the cloth, the cloth is placed on the cloth supporting table 17, the lowest end of the lower cutting edge of the upper cutter 11 contacts the lower fixed cutter 12 first, then when the upper cutter 11 is in a full-cutting state, the lower fixed cutter 12 drives the lower rotary seat 13 to rotate towards the direction deviating from the upper cutter 11 under the abutting action of the upper cutter 11, and meanwhile, the lower rotary seat 13 compresses the return spring 14, so that the lower fixed cutter 12 can rapidly generate tiny adaptive deflection rotation under the abutting action of the upper cutter 11, and the abrasion between the lower fixed cutter 12 and the upper cutter 11 is reduced. The return spring 14 is a spring having a strong elasticity and is capable of rapidly returning when the upper cutter 11 is raised. Therefore, this scheme can accommodate a high frequency shearing action.
Specifically, the angle of inclination of the lower rotary base 13 in the direction of the upper cutter 11 before cutting is 0 to 4 ° in a top view, so that the lower fixed cutter 12 and the upper cutter 11 have sufficient shearing force to cut the cloth better when cutting.
During shearing, the lifting motion guidance of the upper cutter 11 needs to be ensured so as to ensure the shearing quality. The middle movable block 3 is matched with the fixed guide rail block 5 and the adjustable guide rail block 6 in a rolling manner, so that the friction force generated by the middle movable block 3 during the lifting motion can be reduced, meanwhile, the motion guidance of the middle movable block 3 can also be ensured, the motion guidance of the middle movable block 3 is further enhanced by the middle sliding chute 1a, the motion guidance of the upper cutter 11 is ensured, and further, the guide screw 9 is movably matched with the guide hole 10a of the upper cutter connecting plate 10, so that a good guiding effect is also achieved.
When the position of the adjustable guide rail block 6 in the horizontal direction is adjusted, all the lock rod nuts 7 can be unscrewed, all the abutting screw rods 8 are screwed in or screwed out, the exposed lengths of all the abutting screw rods 8 are equal, the adjustable guide rail block 6 can be in a vertical state after being adjusted in place, and the purpose of adjusting the gap between the adjustable guide rail block 6 and the fixed guide rail block 5 is achieved, so that the clamping tightness degree of the adjustable guide rail block 6 and the fixed guide rail block 5 on the middle movable block 3 is adjusted, the middle movable block 3 can smoothly perform lifting motion, and good motion guidance is achieved. When the adjustment is completed, all the lock rod nuts 7 are tightened to lock all the abutting screws 8.
Since the housing is common knowledge, the description thereof will be omitted.
The above are preferred embodiments of the present invention, and those skilled in the art can make various changes or improvements on the above embodiments without departing from the general concept of the present invention, and such changes or improvements should fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides an upper and lower cutter composite set, is including installing last stationary knife sub-assembly and the lower stationary knife sub-assembly in the frame, its characterized in that:
the upper cutter assembly includes:
a housing (1) having a rail member built therein;
an upper cylinder (2) which is arranged vertically and is arranged on the shell (1), and a piston rod of the upper cylinder faces downwards;
the connecting component is arranged at the lower end of the piston rod of the upper cylinder (2), is positioned in the shell (1) and is in up-and-down movable fit with the guide rail component; and
a vertically arranged upper cutter (11) detachably mounted on the connecting assembly;
the lower stationary knife assembly comprises:
a lower bracket (16) fixed on the frame;
a vertically arranged rotating shaft (15);
the rotating end of the lower rotary seat (13) is rotatably connected to the lower bracket (16) through a rotating shaft (15);
a lower fixed knife (12) which is vertically arranged on the lower rotary seat (13) and is matched with the upper cutting knife (11) to cut the cloth; and
a return spring (14) elastically connecting the free end of the lower swivel base (13) and the lower bracket (16).
2. The upper and lower cutter assemblies as claimed in claim 1, wherein: the angle of inclination of the lower rotary seat (13) to the upper cutter (11) before shearing is 0-4 degrees in top view.
3. The upper and lower cutter assemblies as claimed in claim 1, wherein: coupling assembling includes middle movable block (3) with casing (1) inner wall sliding fit, middle movable block (3) still with the vertical clearance fit of guide rail part, coupling assembling still includes upper cutter connecting plate (10) of detachably installing on middle movable block (3), go up cutter connecting plate (10) lower extreme activity and wear out casing (1) and can dismantle with last cutter (11) and be connected.
4. A combination upper and lower cutter assembly as defined in claim 3, wherein: the guide rail part comprises a fixed guide rail block (5) fixedly arranged on the inner wall of the shell (1), and further comprises an adjustable guide rail block (6) which is attached to the inner wall of the shell (1) and can adjust the position along the horizontal direction, the fixed guide rail block (5) and the adjustable guide rail block (6) extend vertically, the upper cutter connecting plate (10) is in sliding fit with the fixed guide rail block (5) and the adjustable guide rail block (6), the fixed guide rail block (5) and the adjustable guide rail block (6) clamp the middle movable block (3) and are respectively in movable fit with two opposite sides of the middle movable block (3), and a gap adjusting part matched with the adjustable guide rail block (6) is arranged on the shell (1) to adjust the gap between the adjustable guide rail block (6) and the fixed guide rail block (5).
5. An upper and lower cutter unit as defined in claim 4, wherein: the clearance adjustment part includes that a plurality of tops of arranging along adjustable guide rail piece (6) length direction lean on screw rod (8), the top is leaned on screw rod (8) one section and is penetrated casing (1) and lean on adjustable guide rail piece (6) lateral wall in order to make adjustable guide rail piece (6) and fixed guide rail piece (5) clip middle movable block (3), just the top is leaned on the wall threaded connection of screw rod (8) and casing (1), the top is leaned on screw rod (8) another section department outside casing (1) and is provided with the control end, the top is leaned on screw rod (8) to go up the cover and is equipped with locking rod nut (7) that are used for locking self position, are outside casing (1).
6. An upper and lower cutter unit as defined in claim 4, wherein: the double-phase opposite sides of the middle movable block (3) are respectively provided with a plurality of vertically arranged idler wheels (4), the idler wheels (4) are rotatably arranged on the middle movable block (3), and the two rows of idler wheels (4) are respectively in rolling fit with one side of the fixed guide rail block (5) and one side of the adjustable guide rail block (6).
7. A combination upper and lower cutter assembly as defined in claim 3, wherein: the inner wall of the shell (1) is provided with a middle sliding groove (1a) which vertically extends, and the middle movable block (3) is in sliding fit with the middle sliding groove (1 a).
8. An upper and lower cutter unit as defined in claim 4, wherein: at least two guide screws (9) distributed at intervals up and down are connected to the adjustable guide rail block (6) in a threaded mode, guide holes (10a) of a long round hole structure are formed in the upper cutter connecting plate (10), the length direction of each guide hole (10a) is parallel to the movement direction of the upper cutter (11), and the head of each guide screw (9) is movably arranged in each guide hole (10a) in a penetrating mode.
9. An upper and lower cutter unit as defined in claim 5, wherein: the plurality of abutting screws (8) are arranged at equal intervals along the length direction of the adjustable guide rail block (6).
10. An upper and lower cutter unit as claimed in any one of claims 1 to 9, wherein: the lower cutting edge of the upper cutter (11) is of an inclined structure, and the lowest end of the lower cutting edge of the upper cutter (11) is relatively close to the rotating shaft (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570049.5U CN211814895U (en) | 2019-09-20 | 2019-09-20 | Upper and lower cutter composite set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570049.5U CN211814895U (en) | 2019-09-20 | 2019-09-20 | Upper and lower cutter composite set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211814895U true CN211814895U (en) | 2020-10-30 |
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ID=72994348
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921570049.5U Active CN211814895U (en) | 2019-09-20 | 2019-09-20 | Upper and lower cutter composite set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211814895U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528191A (en) * | 2019-09-20 | 2019-12-03 | 上海富山精密机械科技有限公司 | A kind of cutter combination unit up and down |
-
2019
- 2019-09-20 CN CN201921570049.5U patent/CN211814895U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110528191A (en) * | 2019-09-20 | 2019-12-03 | 上海富山精密机械科技有限公司 | A kind of cutter combination unit up and down |
| CN110528191B (en) * | 2019-09-20 | 2024-05-14 | 上海富山精密机械科技有限公司 | Upper and lower cutter composite set |
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