CN112853631A - Flat seaming machine - Google Patents
Flat seaming machine Download PDFInfo
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- CN112853631A CN112853631A CN201911192192.XA CN201911192192A CN112853631A CN 112853631 A CN112853631 A CN 112853631A CN 201911192192 A CN201911192192 A CN 201911192192A CN 112853631 A CN112853631 A CN 112853631A
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- tooth
- lifting
- feed
- connecting rod
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B27/00—Work-feeding means
- D05B27/24—Feed-dog lifting and lowering devices
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention provides a flat seaming machine, which comprises a main shaft, a cloth feeding tooth rack, cloth feeding teeth arranged on the cloth feeding tooth rack, a differential tooth rack, differential teeth arranged on the differential tooth rack, a tooth lifting mechanism, a driving source and a transmission assembly, wherein the main shaft is connected with the cloth feeding tooth rack and the differential tooth rack through the tooth lifting mechanism, and the driving source is connected with a tooth lifting transmission part in the tooth lifting mechanism through the transmission assembly; when the driving source acts, the transmission assembly acts on the tooth lifting transmission component to change the inclination of the tooth lifting transmission component or drive the cloth feeding tooth and the differential tooth to descend. The feed dog and the differential dog can be automatically descended when cloth is put in, so that the cloth can be conveniently put below the presser foot, and then the driving source is reset, and the whole set of the feed dog mechanism of the flat seaming machine can be reset; when the driving source acts and is kept at the position after the action, the inclination of a feed lifting tooth transmission part in the feed lifting tooth mechanism is changed, so that the transmission efficiency of the feed lifting tooth mechanism is changed, the height of the feed lifting tooth is adjustable, and the cloth feeding efficiency and the cloth feeding capacity of the flat seaming machine are improved.
Description
Technical Field
The invention relates to a flat seaming machine.
Background
At present, a main shaft, a feed dog frame and a differential dog frame which are arranged side by side along the axial direction of the main shaft, a feed dog arranged on the feed dog frame, a differential dog arranged on the differential dog frame, a feed mechanism and a feed lifting mechanism are all arranged in a flat seaming machine, for example, the flat seaming machine disclosed in the Chinese patent with the application number of 201510219424.1. The main shaft is connected with the feed dog frame and the differential dog frame through the feed mechanism, and drives the feed dog frame and the differential dog frame to reciprocate back and forth in the horizontal direction, and the movement in the direction controls the needle pitch of the flat seaming machine. The main shaft is connected with the feed dog frame and the differential dog frame through the feed dog lifting mechanism to drive the feed dog frame and the differential dog frame to reciprocate up and down in the vertical direction, the motion in the direction controls the height of a feed dog and the differential dog in the flat seaming machine, namely the height of the feed dog is controlled, and the height of the feed dog is also the distance from the feed dog and the differential dog to the upper surface of the needle plate when the feed dog and the differential dog move to the highest point in the up-down direction. Therefore, the cloth feeding tooth frame and the differential tooth frame do the combined motion of the back-and-forth reciprocating motion and the up-and-down reciprocating motion to drive the cloth feeding tooth and the differential tooth to do the combined motion of the back-and-forth reciprocating motion and the up-and-down reciprocating motion, thereby realizing the cloth feeding.
However, the existing flat seaming machines have the following disadvantages:
1. when the presser foot of the flat seaming machine is lifted and cloth is put in before sewing is started, the machine needle is located at the highest point in the stroke range, the machine needle, the feed dog and the differential dog are in linkage relation and are driven by the main shaft, and the feed dog and the differential dog are also located at the highest point in the respective stroke ranges, namely the feed dog and the differential dog both protrude upwards from the tooth groove of the needle plate and are located above the needle plate, so that the cloth is not favorably placed below the presser foot, particularly thick materials are not favorable for affecting the sewing of the thick materials.
2. The feed lifting tooth height of the existing flat seaming machine is a fixed value set when the flat seaming machine leaves a factory, the fixed feed lifting tooth height cannot meet the adaptability of different fabrics, and the fixed feed lifting tooth height reduces the cloth feeding efficiency and the cloth feeding capacity of the flat seaming machine aiming at different fabrics and different fabric thicknesses.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, it is an object of the present invention to provide a flat seaming machine which is capable of adjusting the feed dog height and lowering the feed dog and the differential dog when feeding in the cloth.
In order to achieve the purpose, the invention provides a flat seaming machine which comprises a main shaft, a cloth feeding tooth rack, cloth feeding teeth, a differential tooth rack, differential teeth, a tooth lifting mechanism, a driving source and a transmission assembly, wherein the cloth feeding teeth, the differential tooth rack, the differential teeth, the tooth lifting mechanism, the driving source and the transmission assembly are arranged on the cloth feeding tooth rack; when the driving source acts, the transmission assembly acts on the tooth lifting transmission component to change the inclination of the tooth lifting transmission component or drive the cloth feeding tooth and the differential tooth to descend.
Further, the driving source is a motor.
Further, the feed lifting mechanism comprises a feed lifting eccentric wheel fixed on the main shaft, a feed lifting connecting rod, a first swinging connecting rod, a middle connecting rod, a first swinging crank with a fixed swinging fulcrum, a second swinging connecting rod, a feed lifting shaft parallel to the main shaft, a feed lifting crank fixed on the feed lifting shaft, a first feed lifting sliding block and a second feed lifting sliding block, wherein one end of the feed lifting connecting rod is rotatably sleeved on the periphery of the feed lifting eccentric wheel, the other end of the feed lifting connecting rod is coaxially hinged with one end of the middle connecting rod and one end of the first swinging connecting rod, two ends of the first swinging crank are respectively hinged with the other end of the middle connecting rod and one end of the second swinging connecting rod, the other end of the second swinging connecting rod is hinged with the feed lifting crank, a first eccentric shaft section is arranged on the main shaft, a second eccentric shaft section is arranged on the feed lifting shaft, and the first feed lifting sliding block is rotatably arranged on the first eccentric shaft section, the second feed lifting tooth sliding block is rotatably arranged on the second eccentric shaft section, and the feed tooth rack and the differential tooth rack are respectively provided with a first sliding chute in sliding fit with the first feed lifting tooth sliding block and a second sliding chute in sliding fit with the second feed lifting tooth sliding block; the first swing connecting rod is the tooth lifting transmission part, and the other end of the first swing connecting rod is connected with the transmission assembly.
Furthermore, the transmission assembly comprises an adjusting shaft which is rotatably arranged in the flat seaming machine shell, a rotation driving unit which is connected between a driving source and one end of the adjusting shaft, and a second swing crank which is fixed at the other end of the adjusting shaft, wherein the second swing crank is hinged with the tooth lifting transmission component.
Further, the rotation driving unit comprises a third swing crank and a third swing connecting rod which are driven by the driving source to rotate, and an adjusting wrench fixed at one end of the adjusting shaft, wherein two ends of the third swing connecting rod are hinged with the third swing crank and the adjusting wrench respectively.
Further, the one end of regulating spindle is equipped with axle flange portion, spacing mounting groove has been seted up on the terminal surface of axle flange portion, the regulation spanner has the spanner installation department that adapts to in spacing mounting groove, the spanner installation department be located spacing mounting groove and pass through screw fixed connection with axle flange portion.
As described above, the flat seaming machine according to the present invention has the following advantageous effects:
in the application, by controlling the action of the driving source, the cloth feeding teeth and the differential teeth can be automatically lowered when cloth is put in, particularly the differential teeth are controlled to automatically fall below the upper surface of the needle plate, the material putting space between the needle plate and the presser foot is enlarged, the cloth is conveniently put below the presser foot, and then the driving source is reset, so that the whole set of tooth lifting mechanism of the flat seaming machine can be reset; in addition, after the driving source acts and is kept at the position after the driving source acts, the inclination of a tooth lifting transmission part in the tooth lifting mechanism is changed, so that the transmission efficiency of the tooth lifting mechanism is changed, the tooth lifting heights of the cloth feeding teeth and the differential teeth are changed, the tooth lifting heights are adaptive to the characteristics of different cloth materials, the cloth feeding efficiency and the cloth feeding capacity of the flat seaming machine are improved, and the flat seaming machine meets higher sewing requirements.
Drawings
Fig. 1 is a schematic view of the structure of the flat seaming machine of the present application.
Fig. 2 to 4 are schematic structural views of the flat seaming machine of fig. 1 at different viewing angles without the casing.
Fig. 5 is a schematic view of the connection between the feed lifting teeth connecting rod, the first swing connecting rod, the middle connecting rod, the first swing crank, the second swing crank and the adjusting shaft.
Description of the element reference numerals
1 spindle
101 first eccentric shaft section
2 feed dog frame
3 feed dog
4 differential tooth rack
5 differential tooth
6 driving source
7 eccentric cam of lifting tooth
8 lifting tooth connecting rod
9 first swinging link
10 intermediate connecting rod
11 first oscillating crank
12 second swing link
13 lifting tooth shaft
131 second eccentric shaft section
14 lifting rock shaft crank
15 first lifting tooth slide block
16 second tooth lifting slide block
17 first runner
18 second runner
19 adjusting shaft
191 axle flange part
192 limit mounting groove
193 shaft body part
20 second oscillating crank
21 third oscillating crank
22 third swing link
23 adjusting spanner
231 wrench mounting portion
24 support shaft
241 limiting flange part
25 first copper sheathing
26 first limit retainer ring
27 second copper sleeve
28 second limit retainer ring
29 flat seaming machine casing
30 motor mounting plate
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, proportions, and dimensions shown in the drawings and described herein are for illustrative purposes only and are not intended to limit the scope of the present invention, which is defined by the claims, but rather by the claims. In addition, the terms such as "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for convenience of description only and are not intended to limit the scope of the present invention, and changes or modifications of the relative relationship thereof may be made without substantial technical changes and modifications.
The present application provides a flat seaming machine having a main shaft 1 with a shaft driven by a main motor, the main shaft 1 being rotatably mounted in a flat seaming machine housing 29, as shown in fig. 1 and 3. For convenience of description, in the following examples, the directions are defined as follows: defining the axial direction of the main shaft 1 as a left-right direction, wherein the direction of the main shaft 1 towards the nose (namely the needle side) of the flat seaming machine is a left direction, and the direction of the main shaft 1 towards the tail of the flat seaming machine is a right direction; defining the moving direction of the cloth as the front direction when the flat seaming machine sews; the direction orthogonal to both the left-right direction and the front-rear direction is the up-down direction.
As shown in fig. 1 and 2, the flat seaming machine according to the present application includes a main shaft 1 extending left and right, a feed dog frame 2, a feed dog 3 fixedly mounted on the feed dog frame 2, a differential dog frame 4, a differential dog 5 fixedly mounted on the differential dog frame 4, a dog lifting mechanism, a drive source 6 and a transmission assembly, the main shaft 1 is connected with the feed dog frame 2 and the differential dog frame 4 through the dog lifting mechanism, the feed dog frame 2 and the differential dog frame 4 are driven to reciprocate up and down, the feed dog frame 2 drives the feed dog 3 to reciprocate up and down to make the feed dog 3 perform a dog lifting action, and the differential dog frame 4 drives the differential dog 5 to reciprocate up and down to make the differential dog 5 perform a dog lifting action. The feed dog frame 2 and the differential dog frame 4 are arranged side by side along the axial direction of the main shaft 1, and the feed dog frame 2 is positioned on the right side of the differential dog frame 4. In the front-rear direction, the feed dog 3, a needle drop hole which is formed in a needle plate of the flat seaming machine and is penetrated by a needle up and down, and the differential tooth 5 are sequentially arranged from front to back, so that the differential tooth 5 is closer to an operator relative to the feed dog 3, the differential tooth 5 is positioned on the rear side of the needle drop hole on the needle plate, and the feed dog 3 is positioned on the front side of the needle drop hole on the needle plate. In particular, the drive source 6 is connected to a feed element in the feed mechanism via a transmission assembly.
When the flat seaming machine is used for normal sewing, the driving source 6 is kept still, and the flat seaming machine keeps the current feed lifting teeth to run at high level. When the cloth is taken away after sewing of the flat seaming machine is finished and the cloth is put into the flat seaming machine before sewing, a presser foot in the flat seaming machine is lifted upwards, a driving source 6 acts, acts on a tooth lifting transmission component through a transmission assembly, the inclination of the tooth lifting transmission component is changed, namely the tooth lifting transmission component rotates by an angle, so that a cloth feeding tooth rack 2 and a differential tooth rack 4 are driven to move, a cloth feeding tooth 3 and a differential tooth 5 are driven to descend, at least the differential tooth 5 is completely descended below the upper surface of a needle plate, and the discharge space between the needle plate and the presser foot is enlarged, so that the flat seaming machine executes a lower supply action, an operator can take the cloth away from the lower part of the presser foot conveniently, and the operator can place the cloth into the lower part of the presser foot conveniently; after the cloth is taken and placed, the driving source 6 is reset, under the action of the driving source 6 and the transmission assembly, the tooth lifting transmission component in the tooth lifting mechanism is also reset, namely the whole tooth lifting mechanism of the flat seaming machine is reset, and the flat seaming machine runs at the tooth lifting height before the execution of the lower supply action. When the feed lifting tooth height needs to be adjusted, the flat seaming machine stops running, the driving source 6 is controlled to act, the inclination of the feed lifting tooth transmission part is changed, the feed lifting tooth transmission part is kept at the inclination, the inclinations of the feed dog frame 2 and the differential dog frame 4 are changed, and therefore the transmission efficiency of the feed lifting tooth mechanism is changed, namely the movement amplitude of the main shaft 1 when the feed dog frame 2 and the differential dog frame 4 are driven to reciprocate up and down through the feed lifting tooth mechanism is changed, the feed lifting tooth height of the feed dog 3 and the differential dog 5 is changed, the feed lifting tooth height is made to be adaptive to the characteristics of different cloth, the cloth feeding efficiency and the cloth feeding capacity of the flat seaming machine are improved, and the flat seaming machine meets high sewing requirements.
Therefore, the flat seaming machine has the functions of lower supply and adjustable tooth lifting height; the lower supply function realizes that the flat seaming machine at least enables the differential tooth 5 which is positioned at the rear side of the needle falling hole and closer to an operator to automatically descend below the upper surface of the needle plate when the presser foot is lifted to pick and place the cloth, even if the differential tooth 5 does not protrude upwards from the tooth socket of the needle plate, the cloth is convenient to pick and place; the function of adjusting the height of the feed dog is realized, the inclination of the feed dog frame 2 and the inclination of the differential dog frame 4 of the flat seaming machine are adjusted in a stepless manner within a certain range, namely the height of the feed dog 3 and the height of the feed dog of the differential dog 5 are adjusted in a stepless manner within a certain range, different movement tracks of the feed dog 3 and different movement tracks of the differential dog 5 are realized, and the flat seaming machine is suitable for sewing cloth with different characteristics. Further, in the present embodiment, when the flat seaming machine performs the feed operation, the drive source 6 tilts the feed dog carriers 2 and the differential dog carriers 4 rearward and downward via the transmission mechanism, thereby lowering all the differential teeth 5 below the upper surface of the needle plate and also lowering the feed dog 3.
Preferably, in the present application, the driving source 6 is a motor, preferably a stepping motor, and the flat seaming machine can perform a downward feeding action or perform a feed lifting height adjusting action by controlling the stepping motor to rotate through different angles. As shown in fig. 1 and 2, the driving source 6 is fixedly mounted on a motor mounting plate 30, and the motor mounting plate 30 is fixed to the flat seaming machine casing 29.
Further, the preferable structure of the tooth lifting mechanism is as follows: as shown in fig. 2 to 5, the feed lifting mechanism comprises a feed lifting eccentric 7 fixed on the main shaft 1, a feed lifting connecting rod 8, a first swing connecting rod 9, an intermediate connecting rod 10, a first swing crank 11 with a fixed swing fulcrum, a second swing connecting rod 12, a feed lifting shaft 13 parallel to the main shaft 1, a feed lifting crank 14 fixed on the feed lifting shaft 13, a first feed lifting slider 15 and a second feed lifting slider 16; one end of a feed lifting tooth connecting rod 8 is rotatably sleeved on the periphery of the feed lifting tooth eccentric wheel 7, the other end of the feed lifting tooth connecting rod 8, one end of an intermediate connecting rod 10 and one end of a first swinging connecting rod 9 are coaxially hinged through a pin extending left and right, and the other end of the intermediate connecting rod 10 is hinged with one end of a first swinging crank 11, the other end of the first swinging crank 11 is hinged with one end of a second swinging connecting rod 12 and the other end of the second swinging connecting rod 12 is hinged with a feed lifting crank 14 through pins extending left and right; a first eccentric shaft section 101 which extends leftwards and is eccentric to the main shaft 1 is arranged at the left end of the main shaft 1, a second eccentric shaft section 131 which extends leftwards and is eccentric to the feed lifting shaft 13 is arranged at the left end of the feed lifting shaft 13, the first feed lifting slide block 15 is rotatably arranged on the first eccentric shaft section 101, and the second feed lifting slide block 16 is rotatably arranged on the second eccentric shaft section 131; the front end sides of the cloth feeding tooth rack 2 and the differential tooth rack 4 are both provided with a first sliding chute 17 which is in sliding fit with the first tooth lifting sliding block 15 and extends forwards and backwards, and the first tooth lifting sliding block 15 is in surface contact with the groove wall of the first sliding chute 17; the rear end sides of the cloth feeding tooth rack 2 and the differential tooth rack 4 are both provided with a second sliding chute 18 which is in sliding fit with the second tooth lifting sliding block 16 and extends forwards and backwards, and the groove walls of the second tooth lifting sliding block 16 and the second sliding chute 18 are in surface contact. In the tooth lifting mechanism, a first swing connecting rod 9 is a tooth lifting transmission part; based on this, the transmission assembly is connected to the other end of the first swing link 9. When the flat seaming machine performs downward feeding, a motor forming a driving source 6 rotates by an angle, the inclination of a first swing connecting rod 9 (namely, the position angle of the first swing connecting rod 9) is changed through a transmission assembly, the first swing connecting rod 9 drives a feed lifting shaft 13 to rotate by an angle through a middle connecting rod 10, a first swing crank 11, a second swing connecting rod 12 and a feed lifting crank 14, and further drives a feed dog frame 2 and a differential dog frame 4 to incline backwards and downwards, so that the differential dog 5 is completely descended below the upper surface of a needle plate, and the feed dog 3 is descended; after the cloth is taken and placed, the driving source 6 is reset, and the first swing connecting rod 9 is also reset. When the flat seaming machine executes the feed lifting height adjustment, a motor forming the driving source 6 rotates by another angle, the position angle of the first swing connecting rod 9 is changed through the transmission assembly, the first swing connecting rod 9 is kept at the position angle, then the flat seaming machine operates, the swing amplitude of the main shaft 1 which drives the feed lifting shaft 13 to swing through the feed lifting eccentric wheel 7, the feed lifting connecting rod 8, the first swing connecting rod 9, the middle connecting rod 10, the first swing crank 11, the second swing connecting rod 12 and the feed lifting crank 14 is changed, and the motion amplitude of the feed lifting shaft 13 which drives the feed lifting tooth rack 2 and the differential tooth rack 4 to reciprocate in the vertical direction is changed, so that the feed lifting height adjustment of the feed lifting tooth 3 and the feed lifting height adjustment of the differential tooth 5 are realized.
Preferably, as shown in fig. 3 and 5, the fixed swing fulcrum of the first swing crank 11 is formed in a manner that: the first swing crank 11 is fixed at the right end of a support shaft 24 extending left and right, the support shaft 24 is rotatably arranged in a flat seaming machine shell 29 through a first copper sleeve 25, the support shaft 24 forms a fixed swing fulcrum of the first swing crank 11, and the first swing crank 11 rotates around the central axis of the support shaft 24; the first copper bush 25 is fixed to the flat seaming machine housing 29, and the support shaft 24 has a fixed central axis. The support shaft 24 has a stopper flange portion 241 at its left end, and the support shaft 24 is further fixed with a first stopper 26, and the stopper flange portion 241 and the first stopper 26 are respectively in contact with the left and right sides of the first copper bush 25 to axially stopper the first copper bush 25.
Further, the preferable structure of the transmission assembly is as follows: as shown in fig. 2 and 3, and fig. 5, the transmission assembly includes an adjusting shaft 19 rotatably installed in the flat seaming machine housing 29 and extending left and right, a rotation driving unit connected between the driving source 6 and the left end of the adjusting shaft 19, and a second swing crank 20 fixed to the right end of the adjusting shaft 19, the second swing crank 20 being hinged to the first swing link 9 by a pin extending left and right. The rotation driving unit comprises a third swinging crank 21 fixed with an output shaft of the driving source 6, a third swinging connecting rod 22 and an adjusting wrench 23 fixed at the left end of the adjusting shaft 19, the third swinging crank 21 is directly driven by the driving source 6 to rotate, the front end of the third swinging connecting rod 22 is hinged with the third swinging crank 21 through a pin extending left and right, and the rear end of the third swinging connecting rod 22 is hinged with the adjusting wrench 23 through a shaft position screw extending left and right. The fixing structure between the adjusting shaft 19 and the adjusting wrench 23 is preferably: the adjusting shaft 19 includes a shaft body portion 193 extending left and right and a shaft flange portion 191 provided at the left end of the shaft body portion 193, the diameter of the shaft flange portion 191 is larger than that of the shaft body portion 193, a limit mounting groove 192 is provided on the left end surface of the shaft flange portion 191, the adjusting wrench 23 has a wrench mounting portion 231 adapted to the limit mounting groove 192, and the wrench mounting portion 231 is located in the limit mounting groove 192 and fixedly connected to the shaft flange portion 191 by screws. In addition, the second copper sleeve 27 is sleeved on the periphery of the shaft body part 193, the adjusting shaft 19 is rotatably installed in the flat seaming machine shell 29 through the second copper sleeve 27, the second copper sleeve 27 is fixed on the flat seaming machine shell 29, and the adjusting shaft 19 has a central axis with a fixed position; the shaft body 193 is further fixed with a second limit stop 28, the shaft flange 191 and the second limit stop 28 abut against the left and right sides of the second copper bush 27 respectively to limit the second copper bush 27 in the axial direction, the second limit stop 28 is located on the left side of the second rocking crank 20, and the second rocking crank 20 is fixed at the right end of the shaft body 193.
In the flat seaming machine, the main shaft 1, the feed lifting teeth shaft 13, the supporting shaft 24 and the adjusting shaft 19 are parallel; in the front-rear direction, the support shaft 24, the adjusting shaft 19, the main shaft 1 and the feed lifting shaft 13 are sequentially arranged from front to back, the support shaft 24 is positioned on the front upper side of the adjusting shaft 19, and the adjusting shaft 19 is positioned on the front lower side of the main shaft 1.
The flat seaming machine with the structure has the working principle that:
when the flat seaming machine is used for sewing normally, a motor forming the driving source 6 does not rotate, and the adjusting shaft 19 and the second swinging crank 20 are kept under a position angle, so that one end of the first swinging connecting rod 9 connected with the second swinging crank 20 is kept at the position angle; a main motor in the flat seaming machine drives a main shaft 1 to rotate, a feed lifting eccentric wheel 7 rotates along with the main shaft 1 to drive a feed lifting connecting rod 8 to swing, the feed lifting connecting rod 8 drives a first swing connecting rod 9 and a middle connecting rod 10 to swing, the middle connecting rod 10 drives a first swing crank 11 to swing around a supporting shaft 24, the first swing crank 11 drives a second swing connecting rod 12 to swing, the second swing connecting rod 12 drives a feed lifting crank 14 to swing, a feed lifting shaft 13 swings along with the feed lifting crank 14, a feed lifting shaft 13 drives a second feed lifting slide block 16 to move up and down, the main shaft 1 also drives a first feed lifting slide block 15 to move up and down, finally, the feed lifting slide block 15 and the second feed lifting slide block 16 drive a feed lifting tooth frame 2 and a differential lifting tooth frame 4 to move up and down, a feed lifting tooth 3 moves up and down along with the feed lifting tooth frame 2, and a differential lifting tooth 5 moves up and down along with the differential lifting tooth frame 4.
When the flat seaming machine takes away the cloth after sewing is finished and the flat seaming machine puts the cloth in before sewing, the main motor stops rotating, a presser foot in the flat seaming machine is lifted upwards, the motor forming the driving source 6 rotates by an angle, the driving source 6 drives the adjusting wrench 23 to rotate anticlockwise (seen from the view angle of fig. 1) through the third swinging connecting rod 22 and the third swinging crank 21, the adjusting shaft 19 and the second swinging crank 20 rotate along with the adjusting wrench 23, the second swinging crank 20 drives the first swinging connecting rod 9 to act, the first swinging connecting rod 9 drives the tooth lifting shaft 13 to rotate by an angle through the middle connecting rod 10, the first swinging crank 11, the second swinging connecting rod 12 and the tooth lifting crank 14, and finally the differential tooth 5 is completely descended below the upper surface of the needle plate, and the cloth feeding tooth 3 is descended at the same time, so that an operator can take and place the cloth. After the cloth taking and placing are finished, the motor forming the driving source 6 is reset.
When the lifting tooth height is adjusted, the main motor stops rotating, the motor forming the driving source 6 rotates by another angle, the driving source 6 drives the adjusting wrench 23 to rotate through the third swinging connecting rod 22 and the third swinging crank 21, the adjusting shaft 19 and the second swinging crank 20 rotate along with the adjusting wrench 23, the position angle of the hinged point of the second swinging crank 20 and the first swinging connecting rod 9 is changed, and the hinged point of the second swinging crank 20 and the first swinging connecting rod 9 is kept at the position angle. Then, when the flat seaming machine sews, the swing amplitude of the spindle 1 which drives the feed lifting tooth shaft 13 to swing through the feed lifting tooth eccentric wheel 7, the feed lifting tooth connecting rod 8, the first swing connecting rod 9, the middle connecting rod 10, the first swing crank 11, the second swing connecting rod 12 and the feed lifting tooth crank 14 is changed, the motion amplitude of the feed lifting tooth shaft 13 which drives the feed lifting tooth frame 2 and the differential feed lifting tooth frame 4 to reciprocate in the up-down direction is further changed, and finally the feed lifting tooth height of the feed lifting tooth 3 and the feed lifting tooth height of the differential feed lifting tooth 5 are changed.
In conclusion, the present invention effectively overcomes various disadvantages of the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (6)
1. The utility model provides a flat seaming machine, includes main shaft (1), work feed dental articulator (2), installs work feed tooth (3) on work feed dental articulator (2), differential dental articulator (4), installs differential tooth (5) on differential dental articulator (4) and lifts tooth mechanism, main shaft (1) is continuous with work feed dental articulator (2) and differential dental articulator (4) through lifting tooth mechanism, its characterized in that: the tooth lifting mechanism further comprises a driving source (6) and a transmission assembly, wherein the driving source (6) is connected with a tooth lifting transmission part in the tooth lifting mechanism through the transmission assembly; when the driving source (6) acts, the transmission assembly acts on the tooth lifting transmission component to change the inclination of the tooth lifting transmission component or drive the cloth feeding tooth (3) and the differential tooth (5) to descend.
2. The flat seaming machine of claim 1, wherein: the driving source (6) is a motor.
3. The flat seaming machine of claim 1, wherein: the tooth lifting mechanism comprises a tooth lifting eccentric wheel (7) fixed on a main shaft (1), a tooth lifting connecting rod (8), a first swinging connecting rod (9), a middle connecting rod (10), a first swinging crank (11) with a fixed swinging fulcrum, a second swinging connecting rod (12), a tooth lifting shaft (13) parallel to the main shaft (1), a tooth lifting crank (14) fixed on the tooth lifting shaft (13), a first tooth lifting sliding block (15) and a second tooth lifting sliding block (16), wherein one end of the tooth lifting connecting rod (8) is rotatably sleeved on the periphery of the tooth lifting eccentric wheel (7), the other end of the tooth lifting connecting rod (8) is coaxially hinged with one end of the middle connecting rod (10) and one end of the first swinging connecting rod (9), two ends of the first swinging crank (11) are respectively hinged with the other end of the middle connecting rod (10) and one end of the second swinging connecting rod (12), the other end of the second swing connecting rod (12) is hinged to a feed lifting crank (14), a first eccentric shaft section (101) is arranged on the main shaft (1), a second eccentric shaft section (131) is arranged on the feed lifting shaft (13), the first feed lifting slide block (15) is rotatably mounted on the first eccentric shaft section (101), the second feed lifting slide block (16) is rotatably mounted on the second eccentric shaft section (131), and the feed feeding dental frame (2) and the differential dental frame (4) are respectively provided with a first sliding chute (17) in sliding fit with the first feed lifting slide block (15) and a second sliding chute (18) in sliding fit with the second feed lifting slide block (16); the first swing connecting rod (9) is the tooth lifting transmission part, and the other end of the first swing connecting rod (9) is connected with the transmission assembly.
4. A flat seaming machine according to claim 1 or 3, wherein: the transmission assembly comprises an adjusting shaft (19) rotatably arranged in a flat seaming machine shell (29), a rotation driving unit connected between a driving source (6) and one end of the adjusting shaft (19), and a second swinging crank (20) fixed to the other end of the adjusting shaft (19), wherein the second swinging crank (20) is hinged to the feed lifting tooth transmission component.
5. The flat seaming machine of claim 4, wherein: the rotation driving unit comprises a third swinging crank (21) driven to rotate by a driving source (6), a third swinging connecting rod (22) and an adjusting wrench (23) fixed at one end of an adjusting shaft (19), and two ends of the third swinging connecting rod (22) are hinged to the third swinging crank (21) and the adjusting wrench (23) respectively.
6. The flat seaming machine of claim 5, wherein: one end of adjusting axle (19) is equipped with axle flange portion (191), spacing mounting groove (192) have been seted up on the terminal surface of axle flange portion (191), adjust spanner (23) and have spanner installation department (231) of adaptation in spacing mounting groove (192), spanner installation department (231) are arranged in spacing mounting groove (192) and pass through screw fixed connection with axle flange portion (191).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192192.XA CN112853631B (en) | 2019-11-28 | 2019-11-28 | Flat seaming machine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911192192.XA CN112853631B (en) | 2019-11-28 | 2019-11-28 | Flat seaming machine |
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| Publication Number | Publication Date |
|---|---|
| CN112853631A true CN112853631A (en) | 2021-05-28 |
| CN112853631B CN112853631B (en) | 2022-07-05 |
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|---|---|---|---|
| CN201911192192.XA Active CN112853631B (en) | 2019-11-28 | 2019-11-28 | Flat seaming machine |
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Citations (12)
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