CN219470385U - Feed lifting mechanism of sewing machine - Google Patents

Abstract

The utility model discloses a feed lifting mechanism of a sewing machine, which comprises a shell, wherein a feed rack is arranged in the shell, two ends of the feed rack are respectively provided with a feed connecting rod and a sliding block, the feed connecting rod drives the feed connecting rod to reciprocate through a feed shaft, the sliding block is in sliding connection with a feed lifting fork crank, the feed lifting fork crank is in sliding connection with a feed lifting shaft, the feed lifting shaft is used for controlling the sliding block to reciprocate up and down, and the upper surface of the feed lifting shaft is fixedly connected with an air injection mechanism.

Description

Feed lifting mechanism of sewing machine

Technical Field

The utility model relates to the technical field of sewing machines, in particular to a tooth lifting mechanism of a sewing machine.

Background

A sewing machine is a machine that interweaves or sews one or more layers of stitching material by forming one or more stitches on the stitching material with one or more stitching threads.

Patent number is CN202122983510.3, and patent name is a sewing machine lifts the device of tooth mechanism discloses, has debris such as dust or cotton fibre on the automatically cleaning tooth frame, guarantees that tooth frame can raise the advantage to the required height when practical, but because adopt the push rod to promote the compression case and produce gas and clean dust cotton fibre, the compression case contacts repeatedly and rubs with the push rod, and the durability is not good enough, and for this reason, proposes a sewing machine lifts tooth mechanism.

Disclosure of Invention

The utility model aims to provide a feed lifting mechanism of a sewing machine, which aims to solve the problems in the background technology.

In order to solve the technical problems, the utility model provides the following technical scheme: the utility model provides a sewing machine lifts tooth mechanism, includes the shell, the inside of shell is equipped with the tooth frame, the both ends of tooth frame are equipped with pay-off connecting rod and slider respectively, it is reciprocal rotatory that pay-off connecting rod passes through the pay-off axle drive, slider sliding connection has lifts the forked crank of tooth, it has to lift forked crank sliding connection of tooth to lift the tooth axle, it is used for control to lift the tooth axle the slider is reciprocal up-and-down motion, it has jet-propelled mechanism to lift the upper surface fixedly connected with of tooth axle, jet-propelled mechanism includes the main part, the main part is cylindrically, just the upper end of main part is the opening form, the inside activity of main part is equipped with the piston, the upper end inner peripheral surface of main part is equipped with the spacing ring, the surface fixedly connected with movable tube of piston, the terminal surface of piston runs through and is equipped with the through-hole with the movable tube intercommunication, the upper end outer peripheral surface fixedly connected with of movable tube with the movable tube intercommunication air jet, be equipped with the spring between the piston and the main part.

According to the technical scheme, the check valve is arranged in the movable pipe and penetrates through the end face of the main body, the check valve comprises a check valve main body, annular limiting blocks are fixedly connected to two ends of the inner surface of the check valve main body respectively, a valve core is movably arranged in the check valve main body, an elastic piece is arranged between the valve core and the corresponding check valve main body, through grooves are formed in the side wall of the valve core in a penetrating mode, and annular grooves are formed in the inner peripheral surface of the check valve main body.

According to the technical scheme, the one-way valve is arranged at one end, away from the limiting ring, of the side wall of the main body correspondingly.

According to the technical scheme, the limiting ring is movably connected with the main body.

According to the technical scheme, the inner peripheral surface of the main body is provided with the sliding groove, the sliding block is fixedly connected to the outer peripheral surface of the limiting ring corresponding to the sliding groove, the driving screw is rotationally arranged in the sliding groove and penetrates through the end surface of the sliding block and is in threaded connection with the sliding block.

Compared with the prior art, the utility model has the following beneficial effects: according to the utility model, the shell is arranged, the main body is arranged on the lifting tooth shaft in the shell, the movable piston is arranged in the main body and driven by the movable pipe connected with the main body, when the lifting tooth shaft moves, the movable pipe slides relative to the main body and resets under the action of the spring, and the piston reciprocates in the main body, so that gas is sprayed out from the air spraying port connected with the movable pipe to clean dust cotton wool on the lifting tooth shaft, the friction between equipment is small, and the durability is greatly improved.

Drawings

The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate the utility model and together with the embodiments of the utility model, serve to explain the utility model. In the drawings:

FIG. 1 is a schematic view of a front cross-sectional structure of the present utility model;

FIG. 2 is a schematic view of a front cross-sectional structure of an air jet mechanism according to the present utility model;

FIG. 3 is a schematic view of the jet mechanism of the present utility model;

FIG. 4 is a schematic view of a cross-sectional front view of a check valve according to the present utility model;

in the figure: the device comprises a 1-shell, a 2-tooth frame, a 3-feeding connecting rod, a 4-sliding block, a 5-feeding shaft, a 6-lifting fork-shaped crank, a 7-lifting shaft, an 8-main body, a 9-piston, a 10-limiting ring, an 11-movable pipe, a 12-through hole, a 13-air nozzle, a 14-spring, a 15-one-way valve main body, a 16-annular limiting block, a 17-valve core, an 18-through groove, a 19-annular groove, a 20-sliding groove, a 21-sliding block and a 22-driving screw.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

Referring to fig. 1-4, the present utility model provides the following technical solutions: the utility model provides a sewing machine lifts tooth mechanism, includes shell 1, the inside of shell 1 is equipped with the tooth frame 2, the both ends of tooth frame 2 are equipped with pay-off connecting rod 3 and sliding block 4 respectively, pay-off connecting rod 3 passes through its reciprocal rotation of pay-off axle 5 drive, sliding block 4 sliding connection has lifts the forked crank 6 of tooth, it has lifts the tooth axle 7 to lift forked crank 6 sliding connection, it is used for controlling to lift the tooth axle 7 sliding block 4 is reciprocal up-and-down motion, has been disclosed by prior art above, under the effect of lifting tooth axle 7 and pay-off connecting rod 3, makes tooth frame 2 remove, removes the dress material. The upper surface of the lifting tooth shaft 7 is fixedly connected with an air injection mechanism, and the air injection mechanism is used for cleaning dust attached to the tooth frame 2. The air injection mechanism comprises a main body 8, as shown in fig. 2, the main body 8 is cylindrical, the upper end of the main body 8 is in an opening shape, a piston 9 is movably arranged in the main body 8, the piston 9 can move up and down in the main body 8, a limiting ring 10 is arranged on the inner peripheral surface of the upper end of the main body 8, the limiting ring 10 and the main body 8 are coaxially arranged, the piston 9 cannot be separated from the main body 8 under the action of the limiting ring 10, a movable pipe 11 is fixedly connected with the outer surface of the piston 9, the movable pipe 11 is movably connected with the limiting ring 10, the end surface of the piston 9 is penetrated through a through hole 12 communicated with the movable pipe 11, an air injection port 13 communicated with the movable pipe 11 is fixedly connected with the outer peripheral surface of the upper end of the movable pipe 11, and is directed to the tooth frame 2, so that when a tooth lifting shaft 7 moves, the movable pipe 11 contacts with the upper side wall of a shell 1, the movable pipe 11 moves relative to the main body 8 under the action of stress, the piston 9 is driven to move in the main body 8, air is automatically blown out of the main body 8, dust on the tooth frame 2 is automatically cleaned by the air injection port 13, a spring 14 is arranged between the main body 8 and the piston 9, and the movable pipe 9 is in a reciprocating mode, and the piston 11 is relatively moved by the spring 14;

specifically, the inside of the movable tube 11 and the end face of the main body 8 are provided with one-way valves in a penetrating way, the one-way valves enable gas to flow only in one direction, when the movable tube 11 drives the piston 9 to move, the gas in the main body 8 is compressed, the gas can only flow out of the one-way valves arranged on the movable tube 11 and is sprayed out of the air jet ports 13, when the movable tube is reset under the action of the springs 14, the external gas can enter the inside of the main body 8 through the one-way valves on the side walls of the main body 8, so that when dust is cleaned through the air jet ports 13, the cleaned dust cannot enter the inside of the main body 8 through the air jet ports 13, the one-way valves comprise one-way valve main bodies 15, annular limiting blocks 16 are fixedly connected to the two ends of the inner surface of each one-way valve main body 15 respectively, valve cores 17 are movably arranged in the one-way valve main body 15, the valve cores 17 cannot be separated from the one-way valve main body 15 under the action of the annular limiting blocks 16, elastic pieces are arranged between the valve cores 17 and the corresponding one-way valve main bodies 15, the elastic pieces are arranged under the action of the elastic pieces, the valve cores 17 are contacted with one-way limiting blocks 16, so that the one-way valve is in a closed state, when the dust is cleaned through the air jet ports 13, and the side walls of the one-way valve grooves 18 are provided with annular grooves 19; the annular groove 19 and the check valve body 15 are coaxially arranged, under the action of pressure, gas flows into the check valve body 15, the valve core 17 compresses the corresponding elastic piece to move, then the gas flows into the annular groove 19, enters the valve core 17 from the through groove 18, flows through the check valve body 15, and when the gas moves reversely, the valve core 17 is tightly attached to the annular limiting block 16 under the action of pressure, and the gas cannot flow.

Specifically, the one-way valve is arranged at one end of the side wall of the main body 8, which is far away from the limiting ring 10;

specifically, the limiting ring 10 is movably connected with the main body 8, so that the limiting ring 10 can move in the main body 8, and the moving stroke of the piston 9 in the main body 8 can be controlled by controlling the position of the limiting ring 10 in the main body 8; the amount of gas blown out in a single movement can thus be controlled by adjusting the tendency of the piston 9 to move by adjusting the position of the stop collar 10 within the body 8.

Specifically, the inner peripheral surface of the main body 8 is provided with a chute 20, the chute 20 and the length extending direction of the main body 8 are arranged in the same direction, a sliding block 21 is fixedly connected to the outer peripheral surface of the limiting ring 10 corresponding to the chute 20, when the limiting ring 10 slides in the main body 8, the sliding block 21 also synchronously slides in the chute 20, a driving screw 22 is rotatably arranged in the chute 20, the extending direction of the driving screw 22 and the length direction of the chute 20 are arranged in the same direction, the driving screw 22 penetrates through the end surface of the sliding block 21 and is in threaded connection with the sliding block 21, a knob for controlling the driving screw 22 to rotate is arranged outside the main body 8, the driving screw 22 is controlled to rotate through the knob, the sliding block 21 slides along the inside of the chute 20 under the action of threaded fit, the sliding block 21 drives the limiting ring 10 to slide in the inside of the main body 8, and the position of the limiting ring 10 is adjusted.

When the utility model is used, when the tooth lifting shaft 7 moves, the movable pipe 11 is contacted with the upper side wall of the shell 1, so that the movable pipe 11 moves relative to the main body 8 under the action of stress, the piston 9 is driven to move in the main body 8, gas is blown out from the gas jet 13, dust on the tooth rack 2 is cleaned, and the spring 14 automatically resets the piston 9, so that the movable pipe 11 can reciprocate relative to the main body 8.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present utility model, and the present utility model is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present utility model has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model should be included in the protection scope of the present utility model.

Claims (5)

1. The utility model provides a feed lifting mechanism of sewing machine, includes shell (1), the inside of shell (1) is equipped with tooth frame (2), the both ends of tooth frame (2) are equipped with pay-off connecting rod (3) and sliding block (4) respectively, it is reciprocal rotation that pay-off connecting rod (3) drive it through pay-off axle (5), sliding block (4) sliding connection has and lifts tooth fork crank (6), it has and lifts tooth axle (7) to lift tooth fork crank (6) sliding connection, it is used for controlling to lift tooth axle (7) reciprocating up-and-down motion is done to sliding block (4), its characterized in that: the utility model provides a lift upper surface fixedly connected with jet mechanism of tooth axle (7), jet mechanism includes main part (8), main part (8) are cylindricly, just the upper end of main part (8) is the opening form, the inside activity of main part (8) is equipped with piston (9), the upper end inner peripheral surface of main part (8) is equipped with spacing ring (10), the surface fixedly connected with movable tube (11) of piston (9), the terminal surface of piston (9) runs through be equipped with through-hole (12) of movable tube (11) intercommunication, the upper end outer peripheral surface fixedly connected with of movable tube (11) with jet (13) of movable tube (11) intercommunication, piston (9) with be equipped with spring (14) between main part (8).

2. The sewing machine lift-off mechanism of claim 1, wherein: the inside of activity pipe (11) and terminal surface of main part (8) run through and are provided with the check valve, the check valve includes check valve main part (15), the internal surface both ends department of check valve main part (15) are fixedly connected with annular stopper (16) respectively, the inside activity of check valve main part (15) is equipped with case (17), be provided with the elastic component between case (17) and the corresponding check valve main part (15), the lateral wall of case (17) runs through and is provided with logical groove (18), the inner peripheral surface of check valve main part (15) is provided with ring channel (19).

3. The sewing machine lift-off mechanism of claim 2, wherein: the one-way valve is arranged at one end, away from the limiting ring (10), of the side wall of the main body (8) correspondingly.

4. A sewing machine lift-off mechanism as recited in claim 3 wherein: the limiting ring (10) is movably connected with the main body (8).

5. The sewing machine feed lifting mechanism of claim 4, wherein: the inner peripheral surface of main part (8) is equipped with spout (20), the outer peripheral surface of spacing ring (10) corresponds spout (20) department fixedly connected with slider (21), the inside rotation of spout (20) is equipped with drive screw (22), drive screw (22) run through the terminal surface of slider (21) and with slider (21) spiro union.