CN114672931A - Lower hem sewing machine - Google Patents

Abstract

The invention discloses a lower hem sewing machine which comprises a rack, wherein the rack is provided with a feeding mechanism, a material spitting mechanism, a material receiving mechanism, a folding mechanism and a material receiving mechanism; the feeding mechanism is located below the material spitting mechanism, the cloth output by the feeding mechanism is input into the material spitting mechanism, the cloth with a set length is pulled out by the material spitting mechanism and cut off and placed at the material receiving mechanism, the cut-off cloth is folded by the folding mechanism and moved to a sewing position for sewing, and finally the cut-off cloth is stored by the material receiving mechanism. The full-automatic cloth feeding, pulling, cutting, folding, sewing and receiving device realizes full automation of cloth feeding, pulling, cutting, folding, sewing and receiving, and improves the working efficiency.

Description

Lower hem sewing machine

Technical Field

The invention relates to the technical field of garment processing equipment, in particular to a lower hem sewing machine.

Background

The utility model discloses a patent application number is 201821704683.9 utility model discloses a knitted fabric granny rag machine, including setting up the frame on spreading the cloth platform, rotate in the frame and install first transmission roller, rack-mounted has two sets of devices of dialling the limit, every group is dialled the limit device and is set up in the backup pad and is reverse motion's group limit mechanism including the backup pad of installing in the frame and two pairs of intervals, dial limit mechanism including rotating the first belt pulley of installing in the backup pad, rotate the second belt pulley of installing in the backup pad, the cover is established the transmission band on first belt pulley and second belt pulley, install in the backup pad and with first belt pulley connection's power component, the transport face of transmission band and the limit contact of cloth, and the transport face of transmission band is higher than the roll surface of first transmission roller. The disclosed work station of a knitted fabric spreader has certain defects, such as that the length of the fabric conveyed to a fabric laying table is often not accurate enough, the fabric is not fixed during cutting, and the cutting is not smooth.

Disclosure of Invention

The present invention provides a lower hem sewing machine to solve the above problems.

The technical scheme adopted by the invention for solving the technical problems is as follows: a lower hem sewing machine comprises a frame, wherein the frame is provided with a feeding mechanism, a material spitting mechanism, a material receiving mechanism, a folding mechanism and a material receiving mechanism; the feeding mechanism is located below the material spitting mechanism, the cloth output by the feeding mechanism is input into the material spitting mechanism, the cloth with a set length is pulled out by the material spitting mechanism and cut off and placed at the material receiving mechanism, the cut-off cloth is folded by the folding mechanism and moved to a sewing position for sewing, and finally the cut-off cloth is stored by the material receiving mechanism.

In order to optimize the technical scheme, the invention also comprises the following improved technical scheme.

The material spitting mechanism comprises a left mounting plate and a right mounting plate which can move back and forth; a first connecting plate and a second connecting plate are fixed between the left mounting plate and the right mounting plate; the second connecting plate is provided with a rotatable fourth roller, and the first connecting plate is provided with a sixth motor for driving the fourth roller to rotationally convey the cloth; a rotating pressing shaft is arranged between the left mounting plate and the right mounting plate, and a pressing plate for pressing cloth is fixed on the pressing shaft; the first connecting plate is provided with a material pressing cylinder for driving the material pressing shaft to rotate.

A first cross rod is fixed between the left mounting plate and the right mounting plate, a cutter motor mounting seat capable of sliding left and right is arranged on the first cross rod, a cutter motor is fixed on the cutter motor mounting seat, and a cutter is arranged on an output shaft of the cutter motor; and a second motor for driving the cutter motor mounting seat to move is arranged on the first cross rod.

The material receiving mechanism comprises a fifth connecting plate arranged on the rack, a third slide rail is arranged on the fifth connecting plate, and the first material receiving plate and the second material receiving plate are arranged on the third slide rail in a sliding manner; a set of clamping device is respectively arranged on the outer side of the first material receiving plate and the outer side of the second material receiving plate; the first material receiving plate and the second material receiving plate are located on two different planes and can be mutually overlapped and close to adjust the distance between the two sets of clamping devices.

The folding mechanism comprises a second cross bar, the second cross bar is provided with a first folding synchronous wheel, a second folding synchronous wheel, an eighth synchronous belt and a folding motor for driving the eighth synchronous belt to rotate; the second cross rod is provided with a left clamping device and a right clamping device which can move left and right; and the left clamping device and the right clamping device are respectively connected with two sections of the eighth synchronous belt.

The second cross bar is provided with a first folding synchronizing wheel mounting seat, and the first folding synchronizing wheel mounting seat is connected with a folding motor through a folding motor mounting seat; the output shaft of the doubling-up motor is connected with the first folding synchronizing wheel.

The second cross rod is fixedly connected with a seventh connecting plate, and a fourth sliding rail is arranged on the bottom surface of the seventh connecting plate; the left side of the fourth sliding rail is provided with an eighth sliding block which can slide, and the right side of the fourth sliding rail is provided with a fifth sliding block and a twelfth sliding block which can slide; the left clamping device is arranged on the eighth sliding block, and the right clamping device is arranged on the fifth sliding block.

The right clamping device comprises a third mounting plate, a first cylinder, a first material clamping plate and a first lower clamping plate; the first lower clamping plate is fixed at the bottom of the third mounting plate; the first cylinder body is fixed in the middle of the third mounting plate, and a piston rod of the first cylinder is connected with the first material clamping plate through a fourth right clamp connecting block and can drive the first material clamping plate to move up and down to be matched with the first lower clamping plate for material clamping; and a sixth sliding rail and a seventh sliding block which guide the first clamping plate to lift are arranged on the third mounting plate.

The material receiving mechanism comprises a material receiving cylinder and a material receiving motor which are arranged on the rack; the piston rod of the material receiving cylinder is connected with the material hitting plate, the material hitting plate is rotatably installed on the rack, a material discharging box is arranged below the material hitting plate, and a finished product material discharging plate driven by a material receiving motor and capable of lifting is arranged in the material discharging box.

The feeding mechanism comprises a right side plate and a left side plate which are fixed on two sides of the rack, a first roller and a second roller which can rotate are arranged between the right side plate and the left side plate, and a feeding motor for driving the first roller to rotate is installed on the right side plate; a first sensor for detecting the output quantity of the cloth is arranged below the cloth output between the first roller and the second roller; the cloth output between the first roller and the second roller is conveyed to a spitting mechanism through a first feeding shaft and a second feeding shaft.

Compared with the prior art, the lower hem sewing machine can realize automatic feeding of cloth, and after the cloth is used up, the feeding mechanism facilitates manual replacement of the cloth barrel. The material spitting mechanism can pull out the cloth with the set length and cut the cloth down to be placed at the material receiving mechanism, the folding mechanism folds the cut cloth and moves to the sewing position for sewing, and finally the cut cloth is stored by the material receiving mechanism. The lower hem sewing machine realizes full automation of cloth feeding, material pulling, cutting, folding, sewing and material receiving, and improves the working efficiency.

Drawings

Fig. 1 is a schematic view of the overall structure of the embodiment of the present invention.

Fig. 2 is a schematic structural view of the feeding mechanism.

Fig. 3 is an exploded view of fig. 2.

Fig. 4 is a schematic structural view of the spitting mechanism.

Fig. 5 is an exploded view of fig. 4.

FIG. 6 is a schematic structural view of the mounting mechanism.

Fig. 7 is an exploded view of the receiving mechanism of fig. 6.

Fig. 8 is a schematic structural view of the folding mechanism.

Fig. 9 is an exploded view of fig. 8.

Fig. 10 is a schematic structural view of the receiving mechanism.

Detailed Description

Embodiments of the present invention are described in further detail below with reference to the accompanying drawings.

Fig. 1 to 10 are schematic structural views of the present invention.

The reference numerals are that a rack 1, a right side plate 2, a feeding motor 3, a first gear 4, a second gear 5, a first roller 6, a second roller 7, a left side plate 8, a bearing mounting seat 9, a fixing plate 10, a pressing plate 11, a first feeding shaft 12, a second feeding shaft 13, a first motor 14, a material pressing cylinder 15, a material pressing cylinder mounting seat 16, a left mounting plate 17, a right mounting plate 18, a first material pressing connecting block 19, a fixing sleeve 20, a second material pressing connecting block 21, a feeding plate 22, a sixth motor 23, a sixth motor mounting seat 24, a first feeding synchronizing wheel 25, a second feeding synchronizing wheel 26, a first synchronizing belt 27, a fourth roller 28, a third roller 29, a second bearing mounting seat 30, a third bearing mounting seat 31, a second connecting plate 32, a feeding connecting block 33, a feeding shaft 34, a handle 35, a first connecting plate 36, a cutter 37, a cutter motor 38, a cutter motor mounting seat 39, a cutter motor mounting seat 36, a cutter motor 14, a cutter motor seat 14, a third shaft, a fourth shaft, a third shaft, a fourth shaft, a third shaft, a fourth shaft, a third shaft, A third connecting plate 40, a first belt connecting block 41, a second motor 42, a second synchronous belt 43, a first sliding block 44, a second connecting strip 45, a first slide rail 46, a first cross bar 47, a material pressing shaft 48, a fourth connecting plate 49, a second inductor 50, a third motor 51, a third motor mounting seat 52, a third synchronous belt 53, a first driving shaft 54, a third synchronous wheel 55, a fourth synchronous belt 56, a mounting plate connecting seat 57, a second belt connecting block 58, a second sliding block 59, a second slide rail 60, a fifth connecting plate 61, a fourth motor 62, a motor connecting plate 63, a fifth synchronous wheel 64, a fifth synchronous wheel mounting seat 65, a fifth synchronous belt 66, a sixth synchronous wheel 67, a sixth synchronous wheel mounting seat 68, a third slide rail 69, a third sliding block 70, a first material receiving plate 71, a second material receiving plate 72, a first mounting plate 73, a driving rod 75, a material pressing cylinder 76, a third clamping connecting block 77, The press rod 78, the fourth belt connecting block 79, the fourth clamping connecting block 80, the fifth motor 81, the fifth motor mounting seat 82, the sixth synchronous belt 83, the seventh synchronous belt 84, the second folding connecting block 85, the third belt connecting block 86, the fourth slider 87, the doubling motor 88, the doubling motor mounting seat 89, the first folding synchronous wheel 90, the eighth synchronous belt 91, the second folding synchronous wheel 92, the first right clamping connecting block 93, the seventh connecting plate 94, the fifth slider 95, the third cylinder 96, the second right clamping connecting plate 97, the second cylinder 98, the third right clamping connecting block 99, the fifth slide rail 101, the third mounting plate 102, the mounting block 103, the first lower clamp plate 104, the first cylinder 105, the fourth right clamping connecting block 106, the first clamping plate 107, the sixth slide rail 108, the seventh slider 109, the first left clamping connecting plate 110, the first left clamping connecting block 111, the fifth belt connecting block 112, the eighth slider 113, the fourth right clamping connecting block 106, the first clamping plate 107, the sixth slide rail 108, the seventh slide block 109, the first left clamping connecting block 110, the left clamping connecting block 111, the belt connecting block 112, the fifth belt connecting block 113, A third left clamp connecting block 114, a first left clamp mounting plate 115, a fourth cylinder 116, a second clamp plate 117, a second lower clamp plate 118, a fourth left clamp connecting block 119, a seventh slide rail 120, a ninth slider 121, a second left clamp mounting plate 122, a third left clamp mounting plate 123, a fifth cylinder 124, a fifth left clamp connecting block 125, an eighth slide rail 126, a sixth cylinder 128, a sixth left clamp mounting block 129, a press plate 130, a ninth slide rail 132, a semi-finished product receiving motor 133, a turbine box 134, a semi-finished product discharging plate 135, a tenth slide rail 136, a receiving motor 137, a receiving cylinder 138, a first fixing seat 139, a striking plate 140, a second fixing seat 141, a second cross bar 142, a third inductor 143, a fourth inductor 144, a tenth clamp connecting plate 146, a discharging box 147, a finished product discharging plate 148, a clamping cylinder mounting seat 149, a first folding synchronous wheel mounting seat 150, a fourth slide rail 151, a synchronous belt 151, A twelfth sliding block 152, a second right clamp connecting block 153, a second left clamp connecting block 154, a first cutting synchronizing wheel mounting seat 155, a second cutting synchronizing wheel mounting seat 156, a sixth belt connecting block 157, a sensing piece 158, a first connecting plate mounting hole 159, a second connecting plate mounting hole 160, a first cross beam 161, a second cross beam 162, a first cross rod mounting hole 163, a fourth mounting plate 164, a third synchronizing wheel mounting seat 165, a fourth synchronizing wheel mounting seat 166, a mounting column 167, a vertical rod 168, a fourth bearing mounting seat 169 and a material receiving cylinder mounting seat 170.

The invention discloses a lower hem sewing machine which comprises a feeding mechanism, a material discharging mechanism, a cutting mechanism, a material receiving mechanism, an installing mechanism, a folding mechanism and a material receiving mechanism.

As shown in fig. 1, 2 and 3. The feeding mechanism comprises a feeding motor 3 arranged on the right side plate 2, an output shaft of the feeding motor 3 is connected with a first gear 4, and the first gear 4 is meshed with a second gear 5. The second gear 5 is fixedly connected with the right end part of the first roller 6 through a fixing plate 10, the right end of the first roller 6 can also rotatably penetrate through a first bearing mounting seat 9, the first bearing mounting seat 9 is mounted on the right side plate 2, and the left end of the first roller 6 is mounted on the left side plate 8 through the first bearing mounting seat 9. The first bearing mounting seats 9 at two ends of the second roller 7 are fixedly mounted on the left side plate 8 and the right side plate 2. During feeding, the material distribution barrel is placed between the first roller 6 and the second roller 7, the feeding motor 3 drives the first roller 6 to rotate, and the cloth flows out from a gap between the first roller 6 and the second roller 7.

A first sensor for correlation sensing is arranged on the machine frame 1 below the feeding mechanism, and when the cloth hangs down too much, a light signal which is correlated with the first sensor is blocked. After the first sensor detects the signal, the control system controls the feeding motor 3 to pause feeding, and feeding is continued after the cloth does not trigger the detection signal.

The cloth passing through the gap between the first roller 6 and the second roller 7 passes through the first feeding shaft 12 and the second feeding shaft 13 in sequence, and is finally placed below the pressing plate 11. The first feeding shaft 12 is rotatably mounted on mounting posts 167 at both sides of the frame 1 through a fourth bearing mounting base 169. The first motor 14 is installed on the installation column 167 of the frame 1, and the output shaft of the first motor 14 is connected with a third feeding synchronous wheel, and is connected with a fourth feeding synchronous wheel on the second feeding shaft 13 through a tenth synchronous belt 145. The first motor 14 drives the second feeding shaft 13 to rotate through the tenth timing belt 145, so as to prevent the length of the cloth drawn out from being too short due to elasticity.

As shown in fig. 4 and 5. The spitting mechanism includes two swaging cylinders 15 located below the first connecting plate 36. Two swaging cylinders 15 are mounted on both sides of the first connection plate 36 through swaging cylinder mounting seats 16, and both ends of the first connection plate 36 are fixedly mounted on the first connection plate mounting holes 159 of the left mounting plate 17 and the right mounting plate 18, respectively. The piston rod of the material pressing cylinder 15 is rotatably connected with one end of the first material pressing connecting block 19, the other end of the first material pressing connecting block 19 is sleeved on the material pressing shaft 48, and two ends of the material pressing shaft 48 are rotatably mounted on the left mounting plate 17 and the right mounting plate 18 respectively. The pressing shaft 48 is sleeved with five fixing sleeves 20, and the fixing sleeves 20 are fixedly connected with the pressing plate 11 through a second pressing connecting block 21. The piston rod of the pressing cylinder 15 contracts, and the pressing shaft 48 rotates to drive the pressing plate 11 to press or release.

One end of the fourth roller 28 is rotatably mounted on a second bearing mount 30, and the second bearing mount 30 is fixedly connected with a second connecting plate 32. The other end of the fourth roller 28 is fixedly connected with the first feeding synchronizing wheel 25, the first feeding synchronizing wheel 25 is installed between the two third bearing installation seats 31, and the two third bearing installation seats 31 are fixedly connected with the second connecting plate 32. Both ends of the second connecting plate 32 are fixedly mounted on the second connecting plate mounting holes 160 of the left mounting plate 17 and the right mounting plate 18. The sixth motor 23 is mounted on the lower surface of the first connection plate 36 by a sixth motor mounting seat 24. The output shaft of the sixth motor 23 is connected to a second feeding synchronizing wheel 26, and is connected to a first feeding synchronizing wheel 25 on a fourth roller 28 through a first synchronizing belt 27. The upper surface of the second connecting plate 32 is fixedly connected with the feeding plate 22. A third roller 29 is arranged above the feeding plate 22, and both ends of the third roller 29 are connected with a feeding shaft 34 through feeding connecting blocks 33. Two ends of the feeding shaft 34 are respectively and rotatably arranged on the left mounting plate 17 and the right mounting plate 18, and the right end of the feeding shaft 34 is connected with the handle 35. Since the third roller 29 is heavier than the feed shaft 34, the third roller 29 presses against the fourth roller 28 by gravity down through the slot in the middle of the feed plate 22. The third roller 29 is lifted by the handle 35 to facilitate manual insertion of the cloth. The sixth motor 23 drives the fourth roller 28 to rotate, the third roller 29 is pressed above the fourth roller 28 due to gravity, and the cloth is positioned between the third roller 29 and the fourth roller 28, so that feeding is performed.

The cutting mechanism includes a first cross bar 47, the first cross bar 47 being mounted on first cross bar mounting holes 163 of the left and right mounting plates 17 and 18, respectively. First cutting synchronizing wheel mount 155 is installed to first horizontal pole 47 one end, and second cutting synchronizing wheel mount 156 is installed to the other end, and first cutting synchronizing wheel mount 155 fixed mounting has second motor 42, and second motor 42 drives the second hold-in range 43 of installing between first cutting synchronizing wheel mount 155 and second cutting synchronizing wheel mount 156. The first cross bar 47 is fixedly provided with a first slide rail 46 through a second connecting bar 45, and the first slide block 44 on the first slide rail 46 is provided with a third connecting plate 40. The cutter motor 38 is mounted on the cutter motor mount 39. The cutter motor mounting seat 39 is fixed on the third connecting plate 40 and is connected with the second synchronous belt 43 through the first belt connecting block 41. The output shaft of the cutter motor 38 is provided with a cutter 37, and the cutter 37 is positioned at the cloth output port of the spitting mechanism. When the material is cut, the cutter motor 38 is close to the right mounting plate 18. The cutter motor 38 drives the cutter 37 to rotate to cut the fabric, and the second motor 42 drives the cutter 37 to move towards the left mounting plate 17 through the second synchronous belt 43 to cut the fabric.

Both sides of the fourth link plate 49 are respectively mounted on the upper ends of the first cutting sync wheel mounting seat 155 and the second cutting sync wheel mounting seat 156. A second inductor 50 is mounted on the right side of the fourth connecting plate 49 and an induction piece 158 is mounted on the third connecting plate 40. When the second motor 42 drives the cutter motor 38 to reset, the second sensor 50 senses the position information of the sensing piece 158, thereby controlling the second motor 38 to stop.

As shown in fig. 6. The mounting mechanism comprises a frame 1, and a first beam 161 and a second beam 162 are respectively arranged in the middle and at two sides of the frame 1. A fourth mounting plate 164 is fixedly mounted to the second cross member 162. The third motor 51 is mounted on the first beam 161 by the third motor mount 52. The output end of the third motor 51 is connected with a first synchronous wheel, and the first synchronous wheel is connected with a second synchronous wheel through a third synchronous belt 53. Two first driving shafts 54 are provided at both sides of the second synchronizing wheel, one end of the first driving shaft 54 is connected to the second synchronizing wheel and can rotate together therewith, and the other end of the first driving shaft 54 is connected to the third synchronizing wheel 55 and can rotate together therewith. The third synchronizing wheel 55 is fixed to a mounting post 167 of the frame 1 by a third synchronizing wheel mounting base 165. The third timing wheel 55 is connected to the fourth timing wheel via a fourth timing belt 56. The fourth synchronizing wheel is mounted in the middle of the second cross member 162 by a fourth synchronizing wheel mount 166. The fourth synchronous belts 56 on the two sides of the machine frame 1 are fixedly connected with the right mounting plate 18 and the left mounting plate 17 through the mounting plate connecting seat 57 and the second belt connecting block 58 respectively. The left mounting plate 17 and the right mounting plate 18 are respectively mounted on the second slider 59, and the second slide rail 60 is mounted on the fourth mounting plate 164. The third motor 51 drives the left mounting plate 17 and the right mounting plate 18 to move along the second slide rail 60 through the synchronous belt assembly, and drives the spitting mechanism to move back and forth. The third motor 51 and the first motor 14 are at the same speed, so that there is no tension between the fabrics.

As shown in fig. 7. The receiving mechanism comprises a fifth connecting plate 61, and the fifth connecting plate 61 is fixedly arranged between the fourth mounting plates 164 at two sides. Two third slide rails 69 are arranged on the fifth connecting plate 61, and the first material receiving plate 71 and the second material receiving plate 72 are slidably mounted on the third slide rails 69 through a third slider 70. A set of clamping devices is respectively arranged on the outer side of the first material receiving plate 71 and the outer side of the second material receiving plate 72. The first material receiving plate 71 and the second material receiving plate 72 are located on two different planes, and the first material receiving plate 71 and the second material receiving plate 72 can be close to each other and overlapped, so that the distance between the two clamping devices can be adjusted, and the cloth with different widths can be adapted.

The clamping device comprises a first mounting plate 73, a pressure rod 78 mounted on the first mounting plate 73 and a clamping cylinder 76 for driving the pressure rod 78 to press materials. A ninth synchronizing wheel mounting seat 65 and a sixth synchronizing wheel mounting seat 68 are mounted on two sides of the bottom of the fifth connecting plate 61, and a fifth synchronous belt 66 is arranged between a fifth synchronizing wheel 64 on the ninth synchronizing wheel mounting seat 65 and a sixth synchronizing wheel 67 on the sixth synchronizing wheel mounting seat 68. The bottom of the fifth connecting plate 61 is provided with a fourth motor 62 through two motor connecting plates 63, and the output shaft of the fourth motor 62 is connected with a fifth synchronous wheel 64, so as to drive a fifth synchronous belt 66 to rotate.

The first mounting plate 73 is fixedly connected with the fifth synchronous belt 66 through a fourth belt connecting block 79 and a fourth clamping connecting block 80. The first mounting plates 73 of the two clamping devices are respectively connected with two sections of the five-time belt 66, and when the fifth-time belt 66 rotates, the two clamping devices can approach or move away from each other.

The right end of the first mounting plate 73 is rotatably connected with the middle part of the swaging drive rod 75, the lower end face of the first mounting plate 73 is fixedly connected with the clamping cylinder mounting seat 149, and the clamping cylinder mounting seat 149 is rotatably connected with the cylinder body of the clamping cylinder 76. A piston rod of the clamping cylinder 76 is rotatably connected with the lower end of the material pressing driving rod 75 through a third clamping connection block 77, and the upper end of the material pressing driving rod 75 is fixedly connected with the pressing rod 78.

The first mounting plate 73 is fixedly mounted at the bottom of the first material receiving plate 71 or the second material receiving plate 72, and the third slide rail 69 can guide the movement of the clamping devices corresponding to the first material receiving plate 71 and the second material receiving plate 72. The clamping cylinder 76 can drive the pressing rod 78 to rotate to fix the cloth on the first material receiving plate 71 or the second material receiving plate 72.

The fifth motor 81 is mounted on the first beam 161 by a fifth motor mount 82. The output end of the fifth motor 81 is provided with a seventh synchronizing wheel, and the seventh synchronizing wheel is connected with the eighth synchronizing wheel through a sixth synchronizing belt 83. And second driving shafts are respectively arranged on two sides of the eighth synchronizing wheel. One end of the second driving shaft is connected with the eighth synchronizing wheel and can rotate together, and the other end of the second driving shaft is connected with the ninth synchronizing wheel and can rotate together. The ninth synchronizing wheel is installed in the middle of the inner wall of the fourth installation plate 164 through a ninth synchronizing wheel installation seat. The ninth synchronizing wheel is connected with the tenth synchronizing wheel through a seventh synchronizing belt 84. The tenth synchronizing wheel is mounted on the fourth mounting plate 164 by a tenth synchronizing wheel mount. The vertical rods 168 at the two ends of the folding mechanism are connected with the seventh synchronous belts 84 at the two sides of the mounting mechanism through a second folding connecting block 85 and a third belt connecting block 86. The vertical bars 168 at the two ends of the folding mechanism are mounted on the fourth slide block 87, and the fourth slide block moves in cooperation with the second slide rail 60. The fifth motor 81 drives the folding mechanism to move back and forth along the second slide rail 60 through a seventh timing belt 84.

As shown in fig. 8 and 9. The folding mechanism includes a second cross bar 142. The second cross bar 142 is provided with a first folding synchronizing wheel mounting seat 150, and the first folding synchronizing wheel mounting seat 150 is connected with the folding motor 88 through a folding motor mounting seat 89. The output shaft of the folio motor 88 is provided with a first folding synchronizing wheel 90. The first folding timing wheel 90 is connected to a second folding timing wheel 92 on the other side of the second cross bar 142 via an eighth timing belt 91. The folding motor 88 drives the left and right pinching devices to move toward and away from each other through an eighth timing belt 91 to perform a folding motion.

The second cross bar 142 is fixedly connected with a seventh connecting plate 94, and a fourth sliding rail 151 is installed on the bottom surface of the seventh connecting plate 94. The fourth slide rail 151 is provided with a fifth slide block 95 and a twelfth slide block 152 on the right side thereof and with an eighth slide block 113 on the left side thereof.

The right clamping device includes a third mounting plate 102, a first cylinder 105, a first clamping plate 107, and a first lower clamping plate 104. A first lower clamping plate 104 is secured to the bottom of the third mounting plate 102. The cylinder body of the first cylinder 105 is fixed in the middle of the third mounting plate 102, and the piston rod of the first cylinder 105 is connected with the first material clamping plate 107 through the fourth right clamping connecting block 106, so that the first material clamping plate 107 can be driven to move up and down to be matched with the first lower clamping plate 104 for clamping. The third mounting plate 102 is provided with a sixth slide rail 108 and a seventh slide block 109 for guiding the first material clamping plate 107 to move up and down.

The middle part of the third mounting plate 102 is provided with a first mounting groove for mounting a first cylinder 105. Two sides of the first material clamping plate 107 are connected with a seventh sliding block 109, and a sixth sliding rail 108 is installed in the middle of the installation block 103. The third mounting plate 102 has second mounting grooves on both sides for accommodating the seventh slider 109 and the sixth slide rail 108, reducing the mounting volume of the third mounting plate 102 and the first material clamping plate 107. The piston rod of the first cylinder 105 extends out to drive the first material clamping plate 107 to descend, and the bottom surface of the first material clamping plate 107 is matched with the upper surface of the first lower clamping plate 104 to clamp materials.

The twelfth sliding block 152 is provided with a second right clamping connecting plate 97, the second right clamping connecting plate 97 is provided with a second air cylinder 98, and a piston rod of the second air cylinder 98 is connected with the third mounting plate 102 through a third right clamping connecting block 99. The second cylinder 98 can drive the right clamping device to integrally lift along the fifth slide rail 101. The twelfth slider 152 may guide the right clamping device to move along the fourth sliding rail 151.

The second right clamp connecting block 153 is installed to fifth slider 95, and the second right clamp connecting block 153 is fixed with first right clamp connecting plate 146, and first right clamp connecting plate 146 is connected with one section of eighth hold-in range 91 through first right clamp connecting block 93, fifth belt connecting block 112, and eighth hold-in range 91 can drive the second right clamp connecting block 153 and remove along fourth slide rail 151. The second right clamp connecting block 153 is provided with a third air cylinder 96, and a piston rod of the third air cylinder 96 is connected with the second right clamp connecting plate 97. When the eighth synchronous belt 91 drives the second right clamp connection block 153 to move, the third cylinder 96 is used to connect and drive the second right clamp connection plate 97 and the right clamp device to synchronously move along the fourth slide rail 151. The piston rod of the third air cylinder 96 can drive the second right clamp connecting plate 97 to move independently relative to the second right clamp connecting block 153.

The piston rod of the third cylinder 96 extends to drive the right clamp device to move leftward such that the right clamp device is spaced from the middle of the second cross bar 142 by the same distance as the left clamp. The piston rod of the third air cylinder 96 retracts to drive the right clamping device to move rightwards, and the open position is convenient for the material taking device at the sewing position to take materials. The piston rod of the second cylinder 98 retracts to drive the right clamp device to move up and down for folding.

Eighth slider 113 installs the left clamp connecting block 154 of second, and the left clamp connecting block 154 of second is fixed with first left clamp connecting plate 110, and first left clamp connecting plate 110 is connected with another section of eighth hold-in range 91 through first left clamp connecting block 111, sixth belt connecting block 157, and eighth hold-in range 91 can drive the left clamp connecting block 154 of second and remove along fourth slide rail 151. The second left clamp link block 154 is mounted on the first left clamp mounting plate 115 through the third left clamp link block 114. The eighth slider 113 may guide the left clamping device to move along the fourth slide rail 151.

The left clamp device includes a fourth cylinder 116, a second material clamping plate 117, a second lower clamping plate 118, and a first left clamp mounting plate 115. The second lower clamping plate 118 is secured to the first left clamp mounting plate 115. The cylinder body of the fourth cylinder 116 is fixed on the second material clamping plate 117, and the piston rod of the fourth cylinder 116 is connected with the first left clamp mounting plate 115 through the fourth left clamp connecting block 119. The second material clamping plate 117 is mounted on the first left material clamping mounting plate 115 through a ninth slider 121 and a seventh slide rail 120 in a manner of moving up and down. The fourth cylinder 116 drives the second material clamping plate 117 to move along the seventh slide rail 120, so that the second material clamping plate 117 cooperates with the second lower clamping plate 118 to clamp the materials.

The first left clamp mounting plate 115 is fixedly connected with the third left clamp mounting plate 123. The third left clamp mounting plate 123 is provided with a fifth cylinder 124, and a piston rod of the fifth cylinder 124 is connected with a fifth left clamp connecting block 125. The fifth left clamp connecting block 125 is fixedly connected with the second left clamp mounting plate 122. The fifth cylinder 124 can drive the second left clamp mounting plate 122 to move along the eighth slide rail 126. The second left clamp mounting plate 122 is provided with a sixth air cylinder 128, and a piston rod of the sixth air cylinder 128 is connected with the pressure plate 130 through a sixth left clamp mounting block 129. The sixth air cylinder 128 drives the pressing plate 130 to move up and down along the ninth slide rail 132 through the sixth left clamp mounting block 129, so that the pressing plate 130 presses the folded part of the cloth.

When the piston rod of the fifth cylinder 124 extends to drive the second left clamp mounting plate 122 to move along the eighth slide rail 126, the connecting belt pressing plate 130 is connected to move along the eighth slide rail 126 through the sixth cylinder 128.

A third inductor 143 is provided on the second rail 142. When the right clip device moves to the third sensor 143, the third sensor 143 senses the position information of the right clip device, and controls the half-folding motor 88 to stop.

As shown in fig. 6 and 10. The material receiving mechanism comprises a semi-finished product material receiving device positioned between the material receiving mechanism and the sewing position and a finished product material receiving device positioned below the sewing position. The semi-finished product receiving device comprises a semi-finished product receiving motor 133 mounted below, and an output shaft of the semi-finished product receiving motor 133 drives the semi-finished product discharging plate 135 to ascend and descend along a tenth sliding rail 136 through a turbine box 134. When a semi-finished product is needed, the fifth motor 81 drives the folding mechanism to move to the position above the semi-finished product receiving device. The left and right clamping devices loosen the cloth and the cloth falls onto the semi-finished product discharge plate 135.

The finished product receiving device comprises a receiving cylinder 138 mounted on the frame 1 and a receiving motor 137 mounted on one side of the material discharge box 147. The cylinder body of the material receiving cylinder 137 is rotatably connected with the mounting seat 170 of the material receiving cylinder. The receiving cylinder mounting base 170 is fixedly connected with the frame 1 through a first fixing base 139. The piston rod of the material receiving cylinder 138 is connected with the material hitting plate 140, the lower end of the material hitting plate 140 is connected with the material receiving shaft through the material receiving connecting block, and two ends of the material receiving shaft are rotatably mounted on the frame 1 through the second fixing seat 141. The material receiving cylinder 138 drives the striking plate 140 to move, and the striking plate 140 presses down the sewn cloth from the sewing position to be fed into the discharge box 147. The receiving motor 137 drives the ninth timing belt to rotate. The ninth timing belt is fixedly connected to the finished product discharging plate 148 through a connecting member, and drives the finished product discharging plate 148 to ascend and descend.

The outer walls of the two sides of the discharging box 147 are provided with fourth inductors 144. When the cloth is put in, the light signal between the fourth sensors 144 is blocked, and the material receiving motor 137 is controlled to move, so that the finished material placing plate 148 is lowered.

Before processing, according to the difference of the cloth width, the fourth motor 62 drives the two sets of clamping devices to approach or separate from each other through the fifth synchronous belt 66, and drives the first material receiving plate 71 and the second material receiving plate 72 to move left and right along the third slide rail 69. The cloth is drawn out from the gap between the first roller 6 and the second roller 7, passes through the first feeding shaft 12 and the second feeding shaft 13 in sequence, passes between the third roller 29 and the fourth roller 28, and is finally placed below the pressing plate 11. During processing, the piston rod of the material pressing cylinder 15 extends out to drive the pressing plate 11 to press the cloth. Then the feeding motor 3 drives the first roller 6 to rotate, and the first motor 14 drives the second feeding shaft 13 to rotate, so as to feed. Meanwhile, the material discharging mechanism is driven by the third motor 51 to move forward to a specified position according to the required cloth length. Then the piston rod of the material pressing cylinder 15 retracts to drive the pressing plate 11 to open. The third motor 51 drives the spitting mechanism to move a distance backwards. When the material discharging mechanism moves backwards, the sixth motor 23 drives the fourth roller 28 to rotate, and the third roller 29 and the fourth roller 28 feed the cloth. The cloth is placed on the first receiving plate 71 and the second receiving plate 72, and the two material clamping devices clamp the cloth through the clamping cylinder 76. Then the cutter motor 38 drives the cutter 37 to rotate, and the second motor 42 drives the cutter motor 38 to move leftwards to cut the material. After the material cutting is finished, the third motor 51 drives the material discharging mechanism to return to the home position, and the second motor 42 drives the cutter motor 38 to return to the home position. The two material clamping devices loosen the cloth. The fifth motor 81 drives the folding mechanism to move backwards, the two ends of the cloth are clamped by the left clamping device and the right clamping device, and the fifth motor 81 drives the folding mechanism to move forwards for a certain distance. The piston rod of the third cylinder 96 is then extended to drive the right gripper device to move to the left and the piston rod of the second cylinder 98 is retracted to drive the right gripper device to move upwardly. The folding motor 88 drives the left clamping device and the right clamping device to be close to each other through a synchronous belt for folding. The fifth motor 81 drives the folding mechanism to move forward to the sewing machine head. The right gripper releases the cloth and the piston rod of the third cylinder 96 retracts, driving the right gripper to move to the right out of the way position. At the same time, sixth cylinder 128 drives platen 130 against the fold. The fifth cylinder 124 drives the pressing plate 130 to move forward, so as to push the cloth forward. The material taking device at the head of the sewing machine takes away the cloth and sends the cloth to be sewn. The fifth motor 81 drives the folding mechanism to reset, and the doubling-up motor 88 drives the left clamp and the right clamp to move away from each other and reset. After sewing, the material receiving cylinder 138 drives the material beating plate 140 to move, and the sewn cloth is pressed down from the sewing position and is sent into the material discharging box 147. The material distribution position is sensed by the two sensors, so that the material receiving motor 137 is controlled to enable the finished product discharging plate 148 to descend through the synchronous belt assembly.

Claims (10)

1. The utility model provides a lower hem sewing machine, includes frame (1), characterized by: the frame (1) is provided with a feeding mechanism, a spitting mechanism, a receiving mechanism, a folding mechanism and a receiving mechanism; the feeding mechanism is positioned below the material spitting mechanism, the cloth output by the feeding mechanism is input into the material spitting mechanism, the cloth with a set length is pulled out by the material spitting mechanism and cut off and placed at the material receiving mechanism, the cut-off cloth is folded by the folding mechanism and moved to a sewing position for sewing, and finally the cut-off cloth is stored by the material receiving mechanism.

2. The lower hem sewing machine according to claim 1, wherein: the material spitting mechanism comprises a left mounting plate (17) and a right mounting plate (18) which can move back and forth; a first connecting plate (36) and a second connecting plate (32) are fixed between the left mounting plate (17) and the right mounting plate (18); the second connecting plate (32) is provided with a rotatable fourth roller (28), and the first connecting plate (36) is provided with a sixth motor (23) for driving the fourth roller (28) to rotationally convey the cloth; a rotary pressing shaft (48) is arranged between the left mounting plate (17) and the right mounting plate (18), and a pressing plate (11) for pressing cloth is fixed on the pressing shaft (48); the first connecting plate (36) is provided with a material pressing cylinder (15) for driving the material pressing shaft (48) to rotate.

3. The lower hem sewing machine according to claim 2, wherein: a first cross rod (47) is fixed between the left mounting plate (17) and the right mounting plate (18), a cutter motor mounting seat (39) capable of sliding left and right is arranged on the first cross rod (47), a cutter motor (38) is fixed on the cutter motor mounting seat (39), and a cutter (37) is arranged on an output shaft of the cutter motor (38); and a second motor (42) for driving the cutter motor mounting seat (39) to move is arranged on the first cross rod (47).

4. The lower hem sewing machine of claim 1, wherein: the material receiving mechanism comprises a fifth connecting plate (61) arranged on the rack (1), a third sliding rail (69) is arranged on the fifth connecting plate (61), and a first material receiving plate (71) and a second material receiving plate (72) are slidably arranged on the third sliding rail (69); a set of clamping device is respectively arranged on the outer side of the first material receiving plate (71) and the outer side of the second material receiving plate (72); the first material receiving plate (71) and the second material receiving plate (72) are located on two different planes, and the first material receiving plate (71) and the second material receiving plate (72) can be mutually overlapped and close to adjust the distance between the two sets of clamping devices.

5. The lower hem sewing machine according to claim 1, wherein: the folding mechanism comprises a second cross bar (142), the second cross bar (142) is provided with a first folding synchronous wheel (90), a second folding synchronous wheel (92), an eighth synchronous belt (91) and a folding motor (88) for driving the eighth synchronous belt (91) to rotate; the second cross rod (142) is provided with a left clamping device and a right clamping device which can move left and right; the left clamping device and the right clamping device are respectively connected with two sections of the eighth synchronous belt (91).

6. The lower hem sewing machine of claim 5, wherein: a first folding synchronizing wheel mounting seat (150) is mounted on the second cross bar (142), and the first folding synchronizing wheel mounting seat (150) is connected with a folding motor (88) through a folding motor mounting seat (89); the output shaft of the doubling-up motor (88) is connected with the first folding synchronizing wheel (90).

7. The lower hem sewing machine of claim 6, wherein: the second cross bar (142) is fixedly connected with a seventh connecting plate (94), and a fourth sliding rail (151) is mounted on the bottom surface of the seventh connecting plate (94); an eighth sliding block (113) which can slide is arranged on the left side of the fourth sliding rail (151), and a fifth sliding block (95) and a twelfth sliding block (152) which can slide are arranged on the right side of the fourth sliding rail; the left clamping device is arranged on an eighth sliding block (113), and the right clamping device is arranged on a fifth sliding block (95).

8. The lower hem sewing machine of claim 7, wherein: the right clamping device comprises a third mounting plate (102), a first air cylinder (105), a first material clamping plate (107) and a first lower clamping plate (104); the first lower clamping plate (104) is fixed at the bottom of the third mounting plate (102); a cylinder body of a first cylinder (105) is fixed in the middle of a third mounting plate (102), a piston rod of the first cylinder (105) is connected with a first material clamping plate (107) through a fourth right clamp connecting block (106), and the first material clamping plate (107) can be driven to move up and down to be matched with a first lower clamping plate (104) for material clamping; a sixth sliding rail (108) and a seventh sliding block (109) which guide the first material clamping plate (107) to lift are arranged on the third mounting plate (102).

9. The lower hem sewing machine of claim 1, wherein: the material receiving mechanism comprises a material receiving cylinder (138) and a material receiving motor (137) which are arranged on the rack (1); the piston rod of the material receiving cylinder (138) is connected with the material hitting plate (140), the material hitting plate (140) is rotatably installed on the rack (1), a material discharging box (147) is arranged below the material hitting plate (140), and a finished product material discharging plate (148) which is driven by a material receiving motor (137) and can lift up and down is arranged in the material discharging box (147).

10. The lower hem sewing machine of claim 1, wherein: the feeding mechanism comprises a right side plate (2) and a left side plate (8) which are fixed on two sides of the rack (1), a first rotary drum (6) and a second rotary drum (7) which can rotate are arranged between the right side plate (2) and the left side plate (8), and the right side plate (2) is provided with a feeding motor (3) which is used for driving the first rotary drum (6) to rotate; a first sensor for detecting the cloth output quantity is arranged below the cloth output between the first roller (6) and the second roller (7); the cloth output between the first roller (6) and the second roller (7) is conveyed to a spitting mechanism through a first feeding shaft (12) and a second feeding shaft (13).

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