CN213866777U - Novel hemming machine trimming mechanism and hemming machine - Google Patents
Novel hemming machine trimming mechanism and hemming machine Download PDFInfo
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- CN213866777U CN213866777U CN202022484618.3U CN202022484618U CN213866777U CN 213866777 U CN213866777 U CN 213866777U CN 202022484618 U CN202022484618 U CN 202022484618U CN 213866777 U CN213866777 U CN 213866777U
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- thread trimming
- trimming mechanism
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Abstract
The utility model belongs to the technical field of overedgers, in particular to a novel overedger thread trimming mechanism and an overedger, wherein the thread trimming mechanism is arranged on a frame and performs thread trimming action, the rear end part of a thread trimming shaft of the thread trimming mechanism is provided with a crank, and a bayonet lock is arranged on the crank; the swing arm assembly is arranged at the lower part of the rack; the middle part of the swing arm component is rotatably arranged on the rack, and the right side force arm of the rotating point drives the thread trimming mechanism; the bracket is adjustably arranged on the rack, and the bracket is provided with a propping part of a limiting crank; after the right force arm leaves the bayonet lock, the crank is tightly attached to the abutting part under the action of the reset spring, through the design of the adjustable bracket, when the position of the bracket is moved rightwards, the swinging amplitude of the crank can be reduced, and the swinging frequency of the scissors is reduced; when the position of the bracket is moved leftwards, the swinging amplitude of the crank can be increased, the swinging frequency of the scissors is increased, and the adjustment is convenient.
Description
Technical Field
The utility model belongs to the technical field of overedger, refer in particular to a novel overedger thread trimming mechanism and overedger that contains above-mentioned mechanism.
Background
ZL201720628787.5 discloses a hemming machine trimming lifts presser foot integral structure, drives the main shaft through the driving piece in this scheme and rotates to drive trimming cam and rotate, with the help of the cam appearance, trimming tongue piece supports and leans on trimming cam, makes trimming cam can drive trimming tongue piece motion, influences the stroke of trimming ejector pin simultaneously.
Therefore, when the stroke of the thread trimming ejector rod needs to be adjusted to change the swinging frequency of the scissors, the thread trimming cam needs to be redesigned and replaced, the structure is inconvenient to adjust, the cost is high, and further improvement is needed.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a novel hemming machine's trimming mechanism through adjustable support, solves the problem that can't adjust scissors oscillating frequency among the current sewing machine.
The purpose of the utility model is realized like this:
a novel thread trimming mechanism of overedger comprises
The driving motor is arranged on the rack and provides power for the rest parts;
the thread trimming mechanism is arranged on the rack and performs thread trimming action, a crank is arranged at the rear end part of a thread trimming shaft of the thread trimming mechanism, and a clamping pin is arranged on the crank;
also comprises
The swing arm component is arranged at the lower part of the frame; the middle part of the swing arm component is a rotating point which is rotatably arranged on the rack, and the right side force arm of the rotating point drives the thread trimming mechanism; the outer end part of the left force arm of the rotating point is driven by the driving motor to move up and down;
the bracket is adjustably arranged on the rack, and the bracket is provided with a propping part of a limiting crank; after the right side force arm leaves the clamping pin, the crank is tightly attached to the abutting part under the action of the return spring.
Preferably, the bracket is provided with a strip-shaped fixing hole, and the fastener penetrates through the strip-shaped fixing hole to enable the bracket to be arranged on the rack in an adjustable mode.
Preferably, the right side force arm above the pushing part is further provided with a clamping hook part,
in the process of trimming the thread by the right force arm, the bayonet lock of the thread trimming mechanism slides along the pushing part and enters the clamping hook part;
when the thread trimming mechanism is clamped by an external force, the right side force arm moves upwards and forcibly drives the bayonet lock to reset through the clamping hook part.
Preferably, the pushing portion has a guide curved surface depressed inward.
Preferably, an extension handle is installed at the upper end of the right force arm, and the extension handle is provided with the pushing part and the clamping hook part.
Preferably, the downside of extension handle is provided with the bar hole, and bolt assembly passes the bar hole and locks the extension handle on the right side arm of force.
Preferably, the upper end of the right force arm is provided with a pushing part, and when the right force arm swings to a set position from top to bottom, the pushing part drives a bayonet lock of the thread trimming mechanism and performs thread trimming; when the right side force arm moves reversely to a set position, the pushing part is separated from the bayonet lock.
Preferably, the driving motor is transversely installed at the upper part of the rack, and a motor shaft of the driving motor is provided with a swing rod; the outer end of the swing rod and the end of the force arm on the left side of the rotating point are in transmission through a universal ball head connecting rod.
Preferably, the swing arm assembly is L-shaped, the length of the left side force arm is larger than that of the right side force arm, and the rotating point is arranged at the intersection of the two force arms.
An overlock machine comprises a thread trimming mechanism.
Compared with the prior art, the utility model outstanding and profitable technological effect is:
1. by the design of the adjustable bracket, when the position of the bracket is moved rightwards, the swing amplitude of the crank can be reduced, and the swing frequency of the scissors is reduced; when the position of the bracket is moved leftwards, the swinging amplitude of the crank can be increased, the swinging frequency of the scissors is increased, and the adjustment is convenient.
2. The utility model discloses a design of bar fixed orifices, in actual accommodation process, through unscrewing the fastener after, the support passes through the bar fixed orifices and can be in the periphery shift position of fastener, adjusts to suitable position after, screws up the fastener again and makes support fixed mounting, and it is convenient to adjust.
3. The utility model discloses a trip portion reaches the effect of forcing to reset, reliable and stable with the design of bayonet lock. In the thread trimming process, under the operation of a return spring, the bayonet lock always keeps the trend of moving leftwards, and when the thread trimming mechanism is clamped, the bayonet lock cannot move leftwards, the resetting of the thread trimming mechanism can be realized only by slightly pushing the bayonet lock by the clamping hook part.
4. The utility model discloses a design of guide curved surface for the bayonet lock gets into trip portion more easily, and the resistance is littleer.
5. The utility model discloses a design of extension handle, bolt assembly pass the bar hole and with the locking of extension handle on the arm of force of right side for the extension handle can be adjusted from top to bottom slightly, in order to adapt to different situations.
6. Through the design of the pushing part, when the right force arm swings from top to bottom to a set position, the pushing part drives the bayonet lock of the thread trimming mechanism and performs thread trimming; when the right side arm of force reverse motion was to the settlement position, this pushing part with the bayonet lock separation, compare in current trimming and lift presser foot design, this scheme is more succinct, and stable.
7. The utility model provides a swing arm component is the L type, and left side arm of force length is greater than right side arm of force length, and swing arm component stroke has reduced the work efficiency who has improved the motor to and overall structure's stability.
Drawings
Fig. 1 is a schematic view of a thread trimming and presser foot lifting mechanism mounted on a frame.
Fig. 2 is a first structural schematic diagram of a thread trimming and presser foot lifting mechanism.
Fig. 3 is a structural schematic diagram of a thread trimming and presser foot lifting mechanism.
Fig. 4 is an exploded view of the components of the thread trimming and presser foot lifting mechanism.
Fig. 5 is a schematic view of the engagement of the crank and the abutment.
Fig. 6 is a schematic structural view of the hook portion and the detent.
In the figure: 1-a frame; 2-driving the motor; 3-a presser foot lifting mechanism; 4-a thread trimming mechanism; 5-a return spring; 6-a swing arm assembly; 7-hooking; 8-universal ball head connecting rod; 9-motor shaft; 10-a swing rod; 14-a scaffold; 15-an abutment; 16-a crank; 17-a shear spool; 18-scissors; 19-a bayonet; 21-lifting a presser foot lever; 23-a bolt assembly; 31-a hook part; 32-an elongate handle; 33-a pushing part; 61-right side moment arm; 62-a rotation point; 63-left side force arm; 73-strip shaped fixing holes; 74-fasteners.
Detailed Description
The invention will be further described with reference to specific embodiments below:
as shown in figures 1-6, a novel thread trimming mechanism of overedger comprises
The driving motor 2 is arranged on the frame 1 and provides power for the rest parts;
the thread trimming mechanism 4 is arranged on the rack and performs thread trimming, a crank 16 is arranged at the rear end part of a thread trimming shaft 17 of the thread trimming mechanism, and a bayonet 19 is arranged on the crank 16;
also comprises
A swing arm assembly 6 disposed at a lower portion of the frame 1; the middle part of the swing arm component is a rotating point 62, the rotating point 62 is rotatably arranged on the rack, and the right side force arm 61 of the rotating point drives the thread trimming mechanism 4; wherein, the outer end part of the left force arm 63 of the rotating point is driven by the driving motor 2 to move up and down;
referring to fig. 5, the bracket 14 is adjustably mounted on the frame 1, and the bracket 14 is provided with an abutting part 15 of a limit crank 16; after the right arm 61 leaves the detent 19, the crank 16 abuts against the abutting portion 15 under the action of the return spring 5, and the abutting portion 15 is designed to still push the detent 19 when the pushing portion 33 swings over again.
By moving the position of the bracket 14 to the right, the swing amplitude of the crank 16 can be reduced, and the swing frequency of the scissors can be reduced; when the position of the bracket 14 is moved leftwards, the swinging amplitude of the crank 16 can be increased, the swinging frequency of the scissors is increased, and the adjustment is convenient.
Referring to fig. 5 in detail, the adjusting structure of the bracket 14 is further described, a strip-shaped fixing hole 73 is formed in the bracket 14, a fastener 74 penetrates through the strip-shaped fixing hole 73 to enable the bracket 14 to be adjustably arranged on the rack 1, after the fastener 74 is unscrewed, the bracket 14 can move to a position on the periphery of the fastener 74 through the strip-shaped fixing hole 73, and after the position is adjusted to a proper position, the fastener 74 is screwed down to enable the bracket 14 to be fixedly installed, and the adjustment is convenient.
Referring to fig. 6, the right arm 61 above the pushing portion 33 is further provided with a hook portion 31,
in the process of trimming the thread by the right force arm 61, the bayonet 19 of the thread trimming mechanism slides along the pushing part 33 and enters the hook part 31;
when the thread trimming mechanism 4 is clamped by an external force, the right side force arm 61 moves upwards and forcibly drives the clamping pin 19 to reset through the clamping hook part 31.
When the thread trimming mechanism 4 is clamped by an external force, the right side force arm 61 moves upwards and forcibly drives the clamping pin 19 to reset through the clamping hook part 31. Through the design of trip portion 31 and bayonet lock 19, reach the effect of forcing to reset, it is reliable and stable. In the thread trimming process, under the operation of a return spring, the bayonet lock 19 always keeps moving leftwards, and when the thread trimming mechanism 4 is clamped to prevent the bayonet lock 19 from moving leftwards, the resetting of the thread trimming mechanism can be realized only by slightly pushing the bayonet lock 19 by the clamping hook part 31.
Referring specifically to fig. 6, the pushing portion 33 has a guide curved surface depressed inward. The design of the guiding curve makes it easier for the detent 19 to enter the catch 31 with less resistance.
Referring to fig. 6, an extension handle 32 is installed at the upper end of the right force arm 61, the push portion 33 and the hook portion 31 are disposed on the extension handle 32, and the extension handle 32 can be replaced or designed in different styles according to the circumstances.
Looking specifically at fig. 6, the underside of the elongate handle 32 is provided with a slotted hole through which the bolt assembly 23 passes and locks the elongate handle 32 to the right side moment arm 61. this design allows the elongate handle 32 to be adjusted slightly up or down to accommodate different conditions.
Referring to fig. 6 in detail, the upper end of the right force arm 61 has a pushing portion 33, and when the right force arm 61 swings from top to bottom to a set position, the pushing portion 33 drives the pin 19 of the thread trimming mechanism 4 and performs thread trimming; when the right force arm 61 moves reversely to a set position, the pushing part 33 is separated from the bayonet pin 19, and compared with the existing thread cutting and presser foot lifting design, the scheme is simpler and more stable.
Specifically referring to fig. 1, the driving motor 2 is transversely installed at the upper part of the frame, and a motor shaft 9 of the driving motor is provided with a swing rod 10; the outer end of the swing rod and the end of the force arm 63 on the left side of the rotating point are transmitted through a universal ball head connecting rod 8.
Because the overedger is a mature machine type, the main body parts of the trimming and presser foot lifting mechanisms are both shaped and are not easy to change. The main body parts of the presser foot lifting mechanism and the thread cutting mechanism in the scheme can refer to the structure ZL201420140236.0 in the prior art, so that the presser foot lifting mechanism and the thread cutting mechanism are not unfolded. Further, the scheme can be compatible with the original machine type to the maximum extent, has high exchange rate of parts and components and is easy to market.
The swing arm assembly is L-shaped, the length of the left force arm 63 is greater than that of the right force arm 61, the rotating point 62 is arranged at the intersection of the two force arms, the stroke of the swing arm assembly is a labor-saving lever, the working efficiency of the motor is improved, and the stability of the whole structure is improved.
The overedger comprises the thread trimming mechanism.
The above-mentioned embodiment is only the preferred embodiment of the present invention, and does not limit the protection scope of the present invention according to this, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (10)
1. A novel thread trimming mechanism of overedger comprises
The driving motor (2) is arranged on the rack (1) and provides power for the rest parts;
the thread trimming mechanism (4) is arranged on the rack and performs thread trimming, a crank (16) is arranged at the rear end part of a thread trimming shaft (17) of the thread trimming mechanism, and a bayonet lock (19) is arranged on the crank (16);
it is characterized by also comprising
The swing arm assembly (6) is arranged at the lower part of the frame (1); the middle part of the swing arm component is a rotating point (62), the rotating point (62) is rotatably arranged on the rack, and a right side force arm (61) of the rotating point drives the thread cutting mechanism (4); the outer end part of the left force arm (63) of the rotating point is driven by the driving motor (2) to move up and down;
the support (14) is adjustably mounted on the rack (1), and the support (14) is provided with an abutting part (15) of a limiting crank (16); after the right side force arm (61) leaves the clamping pin (19), the crank (16) is tightly attached to the abutting part (15) under the action of the return spring (5).
2. The novel thread trimming mechanism of an overlock machine as claimed in claim 1, wherein the support (14) is provided with a strip-shaped fixing hole (73), and the fastener (74) passes through the strip-shaped fixing hole (73) to enable the support (14) to be arranged on the machine frame (1) in an adjustable mode.
3. The novel thread trimming mechanism of overedger according to claim 1, characterized in that the right arm (61) above the pushing part (33) is further provided with a hook part (31),
in the process of trimming the thread by the right side force arm (61), the bayonet pin (19) of the thread trimming mechanism slides along the pushing part (33) and enters the clamping hook part (31);
when the thread trimming mechanism (4) is clamped by external force, the right side force arm (61) moves upwards and forcibly drives the clamping pin (19) to reset through the clamping hook part (31).
4. A novel overlock machine thread trimming mechanism according to claim 3, characterized in that said pushing portion (33) has an inwardly concave guiding curve.
5. The novel thread trimming mechanism of overedger according to claim 3, wherein an extension handle (32) is mounted at the upper end of the right force arm (61), and the push part (33) and the hook part (31) are arranged on the extension handle (32).
6. The novel overedger thread trimming mechanism according to claim 5, wherein a strip-shaped hole is formed in the lower side of the extension handle (32), and the bolt assembly (23) penetrates through the strip-shaped hole and locks the extension handle (32) on the right side force arm (61).
7. The novel thread trimming mechanism of overedger according to claim 1, characterized in that the upper end of the right force arm (61) is provided with a pushing part (33), when the right force arm (61) swings from top to bottom to a set position, the pushing part (33) drives the bayonet (19) of the thread trimming mechanism (4) and performs thread trimming; when the right side force arm (61) moves reversely to the set position, the pushing part (33) is separated from the bayonet (19).
8. The novel overedger thread trimming mechanism according to claim 1, wherein the driving motor (2) is transversely arranged at the upper part of the frame, and a motor shaft (9) of the driving motor is provided with a swing rod (10); the outer end of the swing rod and the end of the force arm (63) on the left side of the rotating point are transmitted through a universal ball head connecting rod (8).
9. The novel overedger trimming mechanism according to claim 8, wherein the swing arm assembly is L-shaped, the length of the left side force arm (63) is greater than that of the right side force arm (61), and the rotation point (62) is arranged at the intersection of the two force arms.
10. An overlock machine, characterized in that: comprising a thread trimming mechanism according to any one of claims 1 to 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022484618.3U CN213866777U (en) | 2020-10-31 | 2020-10-31 | Novel hemming machine trimming mechanism and hemming machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022484618.3U CN213866777U (en) | 2020-10-31 | 2020-10-31 | Novel hemming machine trimming mechanism and hemming machine |
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| Publication Number | Publication Date |
|---|---|
| CN213866777U true CN213866777U (en) | 2021-08-03 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022484618.3U Active CN213866777U (en) | 2020-10-31 | 2020-10-31 | Novel hemming machine trimming mechanism and hemming machine |
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| Country | Link |
|---|---|
| CN (1) | CN213866777U (en) |
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2020
- 2020-10-31 CN CN202022484618.3U patent/CN213866777U/en active Active
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