CN110952230A - Automatic change duplex flush joint machine presser foot device - Google Patents
Automatic change duplex flush joint machine presser foot device Download PDFInfo
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- CN110952230A CN110952230A CN201911339785.4A CN201911339785A CN110952230A CN 110952230 A CN110952230 A CN 110952230A CN 201911339785 A CN201911339785 A CN 201911339785A CN 110952230 A CN110952230 A CN 110952230A
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- 238000009958 sewing Methods 0.000 claims abstract description 23
- 239000000463 material Substances 0.000 claims abstract description 15
- 239000003990 capacitor Substances 0.000 claims description 24
- 230000000903 blocking effect Effects 0.000 claims description 7
- 230000002265 prevention Effects 0.000 claims description 6
- 239000004744 fabric Substances 0.000 description 24
- 230000000694 effects Effects 0.000 description 13
- 230000009286 beneficial effect Effects 0.000 description 10
- 238000010586 diagram Methods 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
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- 244000025254 Cannabis sativa Species 0.000 description 1
- 235000012766 Cannabis sativa ssp. sativa var. sativa Nutrition 0.000 description 1
- 235000012765 Cannabis sativa ssp. sativa var. spontanea Nutrition 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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- 235000005607 chanvre indien Nutrition 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000011487 hemp Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000010985 leather Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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- 238000009423 ventilation Methods 0.000 description 1
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/06—Presser feet
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B29/00—Pressers; Presser feet
- D05B29/02—Presser-control devices
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05D—INDEXING SCHEME ASSOCIATED WITH SUBCLASSES D05B AND D05C, RELATING TO SEWING, EMBROIDERING AND TUFTING
- D05D2305/00—Operations on the work before or after sewing
- D05D2305/32—Measuring
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- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention discloses an automatic double-needle flat sewing machine presser foot device, which comprises: the device comprises a fixed column and a pressing plate, wherein the fixed column is arranged in the vertical direction, a guide hole in the vertical direction is formed in the lower end of the fixed column, a first spring is arranged in the guide hole, one end of the first spring is connected with the bottom wall of the guide hole, the other end of the first spring is connected with one end of a guide rod, the guide rod can reciprocate up and down in the guide hole, the pressing plate is arranged at one end, away from the first spring, of the guide rod, the guide rod is movably connected with the pressing plate, and a pressing foot is arranged on one side of the pressing plate. The invention aims to provide an automatic double-needle flat sewing machine presser foot device which is not easy to crush materials and convenient to adjust the position of a pressing plate.
Description
Technical Field
The invention belongs to the technical field of sewing machines, and particularly relates to an automatic double-needle flat sewing machine presser foot device.
Background
The flat sewing machine can sew fabrics such as cotton, hemp, silk, wool, artificial fiber and the like, and products such as leather, plastics, paper and the like, the flat sewing machine is the most basic vehicle type in sewing equipment, the existing sewing machine tends to be more and more automatic and intelligent, and the working efficiency is higher and higher. But the condition that the processed object is damaged easily appears in the presser foot device course of processing of sewing machine for current production to make the effect of product relatively poor, the quality can't obtain the guarantee.
Disclosure of Invention
Therefore, the technical problem to be solved by the invention is to overcome the problem of the damage of the processed object in the prior art.
Therefore, the technical scheme is that the automatic double-needle flat sewing machine presser foot device comprises: the device comprises a fixed column and a pressing plate, wherein the fixed column is arranged in the vertical direction, a guide hole in the vertical direction is formed in the lower end of the fixed column, a first spring is arranged in the guide hole, one end of the first spring is connected with the bottom wall of the guide hole, the other end of the first spring is connected with one end of a guide rod, the guide rod can reciprocate up and down in the guide hole, the pressing plate is arranged at one end, away from the first spring, of the guide rod, the guide rod is movably connected with the pressing plate, and a pressing foot is arranged on one side of the pressing plate.
Preferably, the two sides of the outer wall of the fixed column are provided with guide openings in the vertical direction, one end of the connecting column is connected with the upper end of the guide rod, and the other end of the connecting column penetrates through the guide openings, extends out of the fixed column and is connected with a sliding block.
Preferably, still be provided with on the outer wall of fixed column and prevent that the material crushes the device, prevent that the material crushes the device and include:
the groove body is arranged on the outer wall of the fixed column, a moving rod in the vertical direction is arranged in the groove body, sliding sleeves are respectively arranged at the upper end and the lower end of the moving rod, the moving rod can reciprocate up and down in the sliding sleeves, the outer wall of each sliding sleeve is connected with the inner wall of the groove body through a supporting rod, a push rod in the horizontal direction is arranged at the lower end of the moving rod, one end of the push rod is connected with the outer wall of the moving rod, the other end of the push rod extends to the position above the sliding block, and the push rod is positioned between the two sliding sleeves;
the first rack is arranged in the vertical direction, one end of the first rack is connected with the upper end of the moving rod, the other end of the first rack extends upwards, a gear is arranged in the groove body and is positioned on the left side of the first rack, the first rack is meshed with the gear, a rotating shaft is arranged on the axis of the gear and is fixedly connected with the gear, and two ends of the rotating shaft are mounted on the inner wall of the groove body through bearings;
the movable column is arranged in the guide hole, the movable column is fixedly connected with one end, far away from the guide rod, of the first spring, a groove is formed in the outer wall of the movable column, a through hole is formed in the outer wall of the fixed column, a fixed rod is arranged in the through hole, one end of the fixed rod is inserted into the groove, the other end of the fixed rod extends into the groove, a separation blade is fixedly connected with the fixed rod, a second spring is sleeved on the fixed rod, one end of the second spring is fixedly connected with the outer wall of the fixed column, the other end of the second spring is fixedly connected with the separation blade, one end of a second rack in the horizontal direction is fixedly connected with the separation blade, and the other end of the second rack extends to the lower portion of the gear and is.
Preferably, the outer wall of the groove body is provided with an access hole, and a cover plate is arranged on the access hole.
Preferably, the cover plate is connected with the outer wall of the groove body through a screw.
Preferably, an air cylinder is arranged above the fixed column, and a piston rod of the air cylinder vertically extends downwards and is fixedly connected with the upper end of the fixed column.
Preferably, a plurality of air holes are formed in the outer wall of the groove body.
Preferably, a filter screen is arranged in the air holes.
Preferably, the bottom wall of the guide hole is provided with a pressure sensor, the pressure sensor is located above the movable column, the outer wall of the fixed column is provided with a shell, a processor is arranged in the shell, the outer wall of the shell is provided with an alarm, the pressure sensor is electrically connected with the processor, and the processor is electrically connected with the alarm.
Preferably, a control circuit is disposed in the processor, and the control circuit includes: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1, an inductor L2, an inductor L3, a diode D1, a comparator U1 and a comparator U2;
the output end of the pressure sensor is electrically connected with one end of the resistor R1, the other end of the resistor R1 is electrically connected with one end of the inductor L2, the other end of the inductor L2 is electrically connected with one end of the resistor R5 and one end of the resistor R6 respectively, the other end of the resistor R5 is electrically connected with the positive phase input end of the comparator U1, the other end of the resistor R6 is electrically connected with one end of the inductor L3, the other end of the inductor L3 is electrically connected with the positive phase input end of the comparator U2, two ends of the resistor R5 are connected in parallel with the capacitor C1, and two ends of the resistor R6 are connected in parallel with the capacitor C2;
one end of the resistor R2 is electrically connected to the output end of the pressure sensor, the other end of the resistor R2 is electrically connected to the anode of the diode D1 and one end of the inductor L1, the cathode of the diode D1 is grounded, the other end of the inductor L1 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to the inverting input end of the comparator U1, the signal output end of the comparator U1 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to the inverting input end of the comparator U2, the signal output end of the comparator U2 is electrically connected to one end of the resistor R7, the other end of the resistor R7 is electrically connected to the input end of the processor, the capacitor C3 is connected to the two ends of the resistor R4 in parallel, and the capacitor C4 is connected to the two ends of the resistor R7 in.
The technical scheme of the invention has the following advantages: the invention discloses an automatic double-needle flat sewing machine presser foot device, which comprises: the device comprises a fixed column and a pressing plate, wherein the fixed column is arranged in the vertical direction, a guide hole in the vertical direction is formed in the lower end of the fixed column, a first spring is arranged in the guide hole, one end of the first spring is connected with the bottom wall of the guide hole, the other end of the first spring is connected with one end of a guide rod, the guide rod can reciprocate up and down in the guide hole, the pressing plate is arranged at one end, away from the first spring, of the guide rod, the guide rod is movably connected with the pressing plate, and a pressing foot is arranged on one side of the pressing plate. Because the cloth can have the uneven condition of thickness, when cloth thickness changed, first spring can be along with the thickness change of cloth, and is flexible from top to bottom for the change of clamp plate mountain-down removal adaptation cloth thickness also provides the pretightning force simultaneously and flattens the cloth, can prevent again that the pressure of clamp plate is too big to crush the cloth, has played the effect of protection processing material.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic view of the structure of the guide opening and the slider of the present invention.
Fig. 3 is a schematic structural view of the material crushing prevention device in the invention.
Fig. 4 is a partially enlarged view of a portion a in fig. 3.
Fig. 5 is a schematic structural view of a cylinder in the present invention.
Fig. 6 is a schematic structural diagram of the alarm device of the present invention.
FIG. 7 is a schematic diagram of a control circuit according to the present invention.
The drawings are numbered as follows: 1-fixed column, 2-pressing plate, 3-guiding hole, 4-first spring, 5-guiding rod, 6-pressing foot, 7-guiding opening, 8-connecting column, 9-sliding block, 10-groove body, 11-moving rod, 12-sliding sleeve, 13-supporting rod, 14-pushing rod, 15-first rack, 16-gear, 17-rotating shaft, 18-moving column, 19-groove, 20-through hole, 21-fixing rod, 22-blocking piece, 23-second spring, 24-second rack, 25-maintenance opening, 26-cover plate, 27-air cylinder, 28-piston rod, 29-air vent, 30-pressure sensor, 31-shell, 32-processor and 33-alarm.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
The embodiment of the invention provides an automatic double-needle flat sewing machine presser foot device, as shown in figure 1, comprising: the fixing device comprises a fixing column 1 and a pressing plate 2, wherein the fixing column 1 is arranged in the vertical direction, a guide hole 3 in the vertical direction is formed in the lower end of the fixing column 1, a first spring 4 is arranged in the guide hole 3, one end of the first spring 4 is connected with the bottom wall of the guide hole 3, the other end of the first spring 4 is connected with one end of a guide rod 5, the guide rod 5 can reciprocate up and down in the guide hole 3, the pressing plate 2 is arranged at one end, away from the first spring 4, of the guide rod 5, the guide rod 5 is movably connected with the pressing plate 2, and a pressing foot 6 is arranged on one side of the pressing plate 2.
The working principle and the beneficial technical effects of the technical scheme are as follows: the upper end of the fixed column 1 is fixedly arranged on the machine head of the sewing machine, the guide rod 5 is pushed upwards, the cloth to be sewn is placed on the table top of the sewing machine below the pressing plate 2, the guide rod 5 is loosened, the guide rod 5 is pushed to move downwards along the guide hole 3 under the action of the elastic force of the first spring 4, the pressing plate 2 is pressed on the cloth to flatten the cloth, the transmission mechanism on the table top of the sewing machine drives the cloth to move, and the sewing needle on the machine head of the sewing machine can penetrate through an open slot on the pressing foot 6 to sew the cloth. Because the cloth can have the uneven condition of thickness, when cloth thickness changed, first spring 4 can stretch out and draw back from top to bottom along with the thickness change of cloth for 2 mountain downstones of clamp plate move the change that adapts to cloth thickness, also provide the pretightning force simultaneously and flatten the cloth, can prevent again that the too big cloth of pressure of clamp plate 2 from crushing, played the effect of protection processing material.
In one embodiment, as shown in fig. 2, two sides of the outer wall of the fixed column 1 are provided with vertical guide openings 7, one end of a connecting column 8 is connected with the upper end of the guide rod 5, and the other end of the connecting column 8 passes through the guide openings 7 to extend out of the fixed column 1 and is connected with a sliding block 9.
The working principle and the beneficial technical effects of the technical scheme are as follows: the slider 9 can reciprocate along guide way 7, drives spliced pole 8 and guide bar 5 and reciprocates, has injectd the extreme displacement that guide bar 5 reciprocated to can prevent guide bar 5 at the 3 rotations of guiding hole, guide bar 5 can only drive clamp plate 2 and remove in upper and lower certain limit, makes clamp plate 2 remove more steadily, accurate.
In one embodiment, as shown in fig. 3 to 4, a material crushing prevention device is further disposed on an outer wall of the fixing column 1, and the material crushing prevention device includes:
the groove body 10 is arranged on the outer wall of the fixed column 1, a moving rod 11 in the vertical direction is arranged in the groove body 10, sliding sleeves 12 are respectively arranged at the upper end and the lower end of the moving rod 11, the moving rod 11 can reciprocate up and down in the sliding sleeves 12, the outer wall of each sliding sleeve 12 is connected with the inner wall of the groove body 10 through a support rod 13, a push rod 14 in the horizontal direction is arranged at the lower end of the moving rod 11, one end of the push rod 14 is connected with the outer wall of the moving rod 11, the other end of the push rod 14 extends to the position above the sliding block 9, and the push rod 14 is located between the two sliding sleeves;
the first rack 15 is arranged in the vertical direction, one end of the first rack 15 is connected with the upper end of the moving rod 11, the other end of the first rack 15 extends upwards, a gear 16 is arranged in the groove body 10, the gear 16 is positioned on the left side of the first rack 15, the first rack 15 is meshed with the gear 16, a rotating shaft 17 is arranged on the axis of the gear 16, the rotating shaft 17 is fixedly connected with the gear 16, and two ends of the rotating shaft 17 are mounted on the inner wall of the groove body 10 through bearings;
the movable column 18 is arranged in the guide hole 3, the movable column 18 is fixedly connected with one end, far away from the guide rod 5, of the first spring 4, a groove 19 is formed in the outer wall of the movable column 18, a through hole 20 is formed in the outer wall of the fixed column 1, a fixing rod 21 is arranged in the through hole 20, one end of the fixing rod 21 is inserted into the groove 19, the other end of the fixing rod 21 extends into the groove body 10 and is fixedly connected with a blocking piece 22, a second spring 23 is sleeved on the fixing rod 21, one end of the second spring 23 is fixedly connected with the outer wall of the fixed column 1, the other end of the second spring 23 is fixedly connected with the blocking piece 22, one end of a second rack 24 in the horizontal direction is fixedly connected with the blocking piece 22, and the other end of the second rack 24 extends to the lower portion of the gear 16 and is meshed with the gear 16.
The working principle and the beneficial technical effects of the technical scheme are as follows: when the cloth is folded and the thickness is suddenly increased, the pressing plate 2 moves upwards for a large distance, the pressing plate 2 drives the guide rod 5, the connecting column 8 and the sliding block 9 to move upwards, the sliding block 9 touches the push rod 14, then the moving rod 11 is driven to move upwards along the sliding sleeve 12, the moving rod 11 drives the first rack 15 to move upwards, the gear 16 is driven to rotate anticlockwise through the meshing of the first rack 15 and the gear 16, the gear 16 is driven to move rightwards through the meshing of the gear 16 and the second rack 24, the second rack 24 drives the blocking piece 22 and the fixing rod 21 to move rightwards along the through hole 20, the second spring 23 is stretched at the same time, the left end of the fixing rod 21 moves out of the groove 19, the moving column 18 cannot be fixed and is in a free state, and under the pressure state of the pressing plate 2, the moving column 18, the first spring 4 and the pressing plate 2 at the level of the guide rod 5 are in a, therefore, the pressing plate 2 can not apply large pressure, and the cloth can not be crushed even if the thickness of the cloth is increased by multiple times suddenly, so that the cloth and the pressing plate are protected. When the pressing plate needs to be restored to the initial state, the pressing plate 2 is pulled downwards, the pressing plate 2 drives the guide rod 5, the first spring 4 and the moving column 18 to move downwards, the groove 19 in the moving column 18 moves to the through hole 20, and the fixing rod 21 moves leftwards and is clamped into the groove 19 under the action of the elastic force of the second spring 23, so that the device is restored to the initial state for standby. The material crushing prevention device can prevent accidents caused by the fact that the thickness of thick materials is suddenly increased due to the stacking of the processed materials, the pressure plate 2 moves upwards to the warning displacement, the fixing of the moving column 18 is invalid, and therefore the materials and the presser foot device are protected; after the fixing device fails, the pressing sheet 2 is pulled downwards by hands or moves downwards by means of self gravity to quickly recover to the initial state of the device, and the operation is simple.
In one embodiment, the outer wall of the groove body 10 is provided with an access opening 25, and the access opening is provided with a cover plate 26.
The working principle and the beneficial technical effects of the technical scheme are as follows: when the parts in the groove body 10 are damaged, the cover plate 26 is opened, and the parts are repaired and replaced from the access hole 25.
In one embodiment, the cover plate 26 is connected to the outer wall of the groove body 10 by screws.
The working principle and the beneficial technical effects of the technical scheme are as follows: the cover plate 26 is connected with the outer wall of the groove body 10 through screws, so that the installation and the disassembly are convenient.
In one embodiment, as shown in fig. 5, an air cylinder 27 is disposed above the fixed column 1, and a piston rod 28 of the air cylinder 27 extends vertically downward and is fixedly connected with the upper end of the fixed column 1.
The working principle and the beneficial technical effects of the technical scheme are as follows: the cylinder 27 drives the piston rod 28 up and down to adjust the position of the pressing sheet 2 in the vertical direction for processing materials of different thicknesses.
In one embodiment, a plurality of ventilation holes 29 are formed on the outer wall of the groove body 10.
The working principle and the beneficial technical effects of the technical scheme are as follows: the air holes 29 allow air in the groove body 10 to circulate with the outside, thereby facilitating heat dissipation.
In one embodiment, a filter screen is arranged in the air hole 29.
The working principle and the beneficial technical effects of the technical scheme are as follows: the filter screen can prevent dust or foreign matters from entering the groove body 10 through the air holes 29.
In one embodiment, as shown in fig. 6, a pressure sensor 30 is disposed on the bottom wall of the guide hole 3, the pressure sensor 30 is located above the moving column 18, a housing 31 is disposed on the outer wall of the fixed column 1, a processor 32 is disposed in the housing 31, an alarm 33 is disposed on the outer wall of the housing 31, the pressure sensor 30 is electrically connected to the processor 32, and the processor 32 is electrically connected to the alarm 33.
The working principle and the beneficial technical effects of the technical scheme are as follows: when the movable column 18 is fixed and fails, the movable column moves upwards to collide with the pressure sensor 30, the pressure sensor 30 can detect a pressure value and transmit the pressure value to the processor 32, the processor 32 starts the alarm 33 to remind a worker that the cloth is overlapped, and measures are taken to reduce defective goods in cloth processing.
In one embodiment, as shown in fig. 7, a control circuit is disposed within the processor 32, the control circuit including: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1, an inductor L2, an inductor L3, a diode D1, a comparator U1 and a comparator U2;
the output end of the pressure sensor 30 is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to one end of the inductor L2, the other end of the inductor L2 is electrically connected to one end of the resistor R5 and one end of the resistor R6, the other end of the resistor R5 is electrically connected to the positive input end of the comparator U1, the other end of the resistor R6 is electrically connected to one end of the inductor L3, the other end of the inductor L3 is electrically connected to the positive input end of the comparator U2, the two ends of the resistor R5 are connected in parallel to the capacitor C1, and the two ends of the resistor R6 are connected in parallel to the capacitor C2;
one end of the resistor R2 is electrically connected to the output end of the pressure sensor 30, the other end of the resistor R2 is electrically connected to the anode of the diode D1 and one end of the inductor L1, the cathode of the diode D1 is grounded, the other end of the inductor L1 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to the inverting input end of the comparator U1, the signal output end of the comparator U1 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to the inverting input end of the comparator U2, the signal output end of the comparator U2 is electrically connected to one end of the resistor R7, the other end of the resistor R7 is electrically connected to the input end of the processor 32, the capacitor C3 is connected to both ends of the resistor R4 in parallel, and the capacitor C4 is connected to both ends of the resistor R7 in parallel.
The working principle and the beneficial technical effects of the technical scheme are as follows: compared with U1 and U2, the signal detected by the pressure sensor 30 can be amplified step by step, the detection sensitivity is improved, the circuit is more stable due to the capacitance and the inductance, the instability of current and voltage is prevented, and the whole control circuit is simple in structure and easy to implement.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (10)
1. The utility model provides an automatic change duplex flush joint machine presser foot device which characterized in that includes: the fixing device comprises a fixing column (1) and a pressing plate (2), wherein the fixing column (1) is arranged in the vertical direction, a guide hole (3) in the vertical direction is formed in the lower end of the fixing column (1), a first spring (4) is arranged in the guide hole (3), one end of the first spring (4) is connected with the bottom wall of the guide hole (3), the other end of the first spring (4) is connected with one end of a guide rod (5), the guide rod (5) can vertically reciprocate in the guide hole (3), the pressing plate (2) is arranged at one end, away from the first spring (4), of the guide rod (5), the guide rod (5) is movably connected with the pressing plate (2), and a pressing foot (6) is arranged on one side of the pressing plate (2).
2. The automatic double-needle flat sewing machine presser foot device according to claim 1, characterized in that two sides of the outer wall of the fixed column (1) are provided with vertical guide openings (7), one end of a connecting column (8) is connected with the upper end of the guide rod (5), and the other end of the connecting column (8) passes through the guide openings (7) and extends out of the fixed column (1) and is connected with a sliding block (9).
3. The automatic double-needle flat sewing presser foot device of claim 2, wherein the outer wall of the fixed column (1) is further provided with a material crushing prevention device, and the material crushing prevention device comprises:
the fixing column comprises a groove body (10) and a fixing column body (1), wherein a moving rod (11) in the vertical direction is arranged in the groove body (10), sliding sleeves (12) are respectively arranged at the upper end and the lower end of the moving rod (11), the moving rod (11) can reciprocate up and down in the sliding sleeves (12), the outer wall of each sliding sleeve (12) is connected with the inner wall of the groove body (10) through a supporting rod (13), a horizontal push rod (14) is arranged at the lower end of the moving rod (11), one end of each push rod (14) is connected with the outer wall of the corresponding moving rod (11), the other end of each push rod (14) extends to the position above a sliding block (9), and each push rod (14) is located between two sliding sleeves (12);
the first rack (15) is arranged in the vertical direction, one end of the first rack (15) is connected with the upper end of the moving rod (11), the other end of the first rack (15) extends upwards, a gear (16) is arranged in the groove body (10), the gear (16) is located on the left side of the first rack (15), the first rack (15) is meshed with the gear (16), a rotating shaft (17) is arranged on the axis of the gear (16), the rotating shaft (17) is fixedly connected with the gear (16), and two ends of the rotating shaft (17) are mounted on the inner wall of the groove body (10) through bearings;
the movable column (18) is arranged in the guide hole (3), the movable column (18) is fixedly connected with one end, far away from the guide rod (5), of the first spring (4), a groove (19) is formed in the outer wall of the movable column (18), a through hole (20) is formed in the outer wall of the fixed column (1), a fixed rod (21) is arranged in the through hole (20), one end of the fixed rod (21) is inserted into the groove (19), the other end of the fixed rod (21) extends into the groove body (10) and is fixedly connected with a blocking piece (22), a second spring (23) is sleeved on the fixed rod (21), one end of the second spring (23) is fixedly connected with the outer wall of the fixed column (1), the other end of the second spring (23) is fixedly connected with the blocking piece (22), and one end of a second rack (24) in the horizontal direction is fixedly connected with the blocking piece (22), the other end of the second rack (24) extends to the lower part of the gear (16) and is meshed with the gear (16).
4. The automatic double-needle flat sewing machine presser foot device according to claim 3, characterized in that an access opening (25) is arranged on the outer wall of the groove body (10), and a cover plate (26) is arranged on the access opening.
5. The automatic double needle lockstitch presser foot device according to claim 4, wherein said cover plate (26) is connected with the outer wall of said groove body (10) by screws.
6. The automatic double-needle flat sewing machine presser foot device according to claim 1, characterized in that a cylinder (27) is arranged above the fixed column (1), and a piston rod (28) of the cylinder (27) extends vertically downwards and is fixedly connected with the upper end of the fixed column (1).
7. The automatic double-needle flat sewing presser foot device according to claim 3, wherein a plurality of air holes (29) are formed in the outer wall of the groove body (10).
8. The automatic double-needle flat sewing presser foot device according to claim 7, characterized in that a filter screen is arranged in the air vent (29).
9. The automatic double-needle lockstitch presser foot device according to claim 3, wherein a pressure sensor (30) is disposed on the bottom wall of the guide hole (3), the pressure sensor (30) is located above the moving column (18), a housing (31) is disposed on the outer wall of the fixed column (1), a processor (32) is disposed in the housing (31), an alarm (33) is disposed on the outer wall of the housing (31), the pressure sensor (30) is electrically connected with the processor (32), and the processor (32) is electrically connected with the alarm (33).
10. The automated double needle lockstitch presser foot device of claim 9, wherein a control circuit is disposed within said processor (32), said control circuit comprising: a resistor R1, a resistor R2, a resistor R3, a resistor R4, a resistor R5, a resistor R6, a resistor R7, a capacitor C1, a capacitor C2, a capacitor C3, a capacitor C4, an inductor L1, an inductor L2, an inductor L3, a diode D1, a comparator U1 and a comparator U2;
the output end of the pressure sensor (30) is electrically connected to one end of the resistor R1, the other end of the resistor R1 is electrically connected to one end of the inductor L2, the other end of the inductor L2 is electrically connected to one end of the resistor R5 and one end of the resistor R6, the other end of the resistor R5 is electrically connected to the positive input end of the comparator U1, the other end of the resistor R6 is electrically connected to one end of the inductor L3, the other end of the inductor L3 is electrically connected to the positive input end of the comparator U2, the two ends of the resistor R5 are connected in parallel to the capacitor C1, and the two ends of the resistor R6 are connected in parallel to the capacitor C2;
one end of the resistor R2 is electrically connected to the output end of the pressure sensor (30), the other end of the resistor R2 is electrically connected to the anode of the diode D1 and one end of the inductor L1, the cathode of the diode D1 is grounded, the other end of the inductor L1 is electrically connected to one end of the resistor R3, the other end of the resistor R3 is electrically connected to the inverting input end of the comparator U1, the signal output end of the comparator U1 is electrically connected to one end of the resistor R4, the other end of the resistor R4 is electrically connected to the inverting input end of the comparator U2, the signal output end of the comparator U2 is electrically connected to one end of the resistor R7, the other end of the resistor R7 is electrically connected to the input end of the processor (32), the capacitors C3 are connected to both ends of the resistor R4 in parallel, and the capacitors C4 are connected to both ends of the resistor R7 in parallel.
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| CN201911339785.4A CN110952230B (en) | 2019-12-23 | 2019-12-23 | Automatic change duplex flush joint machine presser foot device |
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| CN201911339785.4A CN110952230B (en) | 2019-12-23 | 2019-12-23 | Automatic change duplex flush joint machine presser foot device |
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| CN110952230B CN110952230B (en) | 2020-08-04 |
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| CN110952230B (en) | 2020-08-04 |
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Application publication date: 20200403 Assignee: Yancheng Airun Electrical Appliance Co.,Ltd. Assignor: JIANGSU AIHUJIA HEALTH TECHNOLOGY Co.,Ltd. Contract record no.: X2023980044045 Denomination of invention: An automated double needle flat sewing machine presser foot device Granted publication date: 20200804 License type: Common License Record date: 20231024 Application publication date: 20200403 Assignee: Jiangsu aiaijia Medical Equipment Co.,Ltd. Assignor: JIANGSU AIHUJIA HEALTH TECHNOLOGY Co.,Ltd. Contract record no.: X2023980044043 Denomination of invention: An automated double needle flat sewing machine presser foot device Granted publication date: 20200804 License type: Common License Record date: 20231024 |