CN109183289B - Automatic leather strap doubling and sewing machine - Google Patents
Automatic leather strap doubling and sewing machine Download PDFInfo
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- CN109183289B CN109183289B CN201810934089.7A CN201810934089A CN109183289B CN 109183289 B CN109183289 B CN 109183289B CN 201810934089 A CN201810934089 A CN 201810934089A CN 109183289 B CN109183289 B CN 109183289B
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- 238000009958 sewing Methods 0.000 title claims abstract description 62
- 239000010985 leather Substances 0.000 title claims abstract description 47
- 238000005452 bending Methods 0.000 claims description 16
- 230000000903 blocking effect Effects 0.000 claims description 13
- 238000004804 winding Methods 0.000 claims description 3
- 239000000047 product Substances 0.000 description 2
- 210000000078 claw Anatomy 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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Classifications
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B31/00—Workpiece holders or hold-downs in machines for sewing leather
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B17/00—Details of apparatus or machines for manufacturing or treating skins, hides, leather, or furs
- C14B17/06—Work feeding or clamping devices
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- C—CHEMISTRY; METALLURGY
- C14—SKINS; HIDES; PELTS; LEATHER
- C14B—MECHANICAL TREATMENT OR PROCESSING OF SKINS, HIDES OR LEATHER IN GENERAL; PELT-SHEARING MACHINES; INTESTINE-SPLITTING MACHINES
- C14B5/00—Clicking, perforating, or cutting leather
- C14B5/04—Clicking, perforating, or cutting leather for making leather belts or strips
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- D—TEXTILES; PAPER
- D05—SEWING; EMBROIDERING; TUFTING
- D05B—SEWING
- D05B35/00—Work-feeding or -handling elements not otherwise provided for
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Textile Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Sewing Machines And Sewing (AREA)
Abstract
The invention relates to an automatic leather strap doubling and sewing machine, which is characterized in that: the sewing machine comprises a working platform, wherein a feeding and cutting unit, a sewing unit and a transferring unit are arranged on the working platform; the transfer unit comprises a transfer part and a clamping part, and the transfer part is used for transferring the clamping part between the feeding and cutting unit and the sewing unit, so that the raw leather strips are cut and sewn. The belt ring processing machine can realize automatic feeding, cutting, transferring and sewing of the raw leather strips, so that the leather strips are processed into the belt ring, the belt ring processing machine has high processing efficiency, higher processing quality can be ensured, and the processing quality is consistent.
Description
Technical Field
The invention relates to an automatic leather strap folding and sewing machine, and belongs to the technical field of processing of bags and leatherware.
Background
Belt loops are common fittings on leather belts and, after the belt is fastened, an excess length is typically threaded into the belt loop to restrain the belt and prevent the excess length from hanging down. The traditional belt loop adopts a manual processing mode, specifically, a preset length is firstly cut from a long leather strip, then the cut leather strip is sewn, so that the belt loop is formed, and finally, the belt loop is turned inside and outside to obtain a final product. The manual processing mode has low efficiency, and is difficult to ensure uniform processing quality all the time.
Disclosure of Invention
In view of the above problems, an object of the present invention is to provide an automatic leather strip doubling and sewing machine with high working efficiency and stable processing quality.
In order to achieve the purpose, the invention adopts the following technical scheme: the utility model provides an automatic change leather strap fifty percent discount sewing machine which characterized in that: the sewing machine comprises a working platform, wherein a feeding and cutting unit, a sewing unit and a transferring unit are arranged on the working platform;
the transfer unit comprises a transfer part and a clamping part, and the transfer part is used for transferring the clamping part between the feeding and cutting unit and the sewing unit so as to cut and sew the raw leather strips; the feeding and cutting unit comprises a rack, a feeding disc for winding leather strips into coils is rotatably arranged at the top of the rack, a first linear motion cylinder and a second linear motion cylinder which are arranged along the vertical direction are arranged on the rack, the output end of the first linear motion cylinder is fixedly connected with a first connecting arm, a first slide bar is fixedly arranged at the top of the first connecting arm and is connected with the rack in a sliding manner, a vertical plate is arranged at the front end of the first connecting arm, a cutting knife is arranged at the bottom of the vertical plate, a first push-pull electromagnet is fixedly connected at the bottom of the first connecting arm, the output end of the first push-pull electromagnet is fixedly connected with a clamping arm, a guide rod is arranged at the rear side of the vertical plate, and the clamping arm is connected with the guide rod in a sliding manner; a gap for leather strips to pass through is reserved between the clamping arm and the vertical plate, a positioning square hole for leather strips to pass through is formed in the rack above the vertical plate, a supporting column is arranged on the rack on one side of the positioning square hole, two to four horizontal positioning columns are arranged on the supporting column, and the horizontal positioning columns are located right above the positioning square hole; the machine frame is arranged below the vertical plate and is provided with a clamp holder, the machine frame is also fixedly provided with a second push-pull electromagnet arranged along the front-back direction, the output end of the second push-pull electromagnet is fixedly connected with a second connecting arm, the second connecting arm is in sliding connection with a first guide rail arranged on the machine frame, the front end of the second connecting arm is provided with a lower cutting knife, and the lower cutting knife is matched with an upper cutting knife so as to cut the leather strips; the output end of the second linear motion cylinder is fixedly connected with a bending arm, the bending arm comprises a horizontal section and a vertical section, the lower end of the vertical section is provided with a shaft sleeve, a rotating shaft is rotatably connected in the shaft sleeve, one end of the rotating shaft is fixedly connected with a push rod which is obliquely arranged forwards and upwards, the other end of the rotating shaft is fixedly connected with a polygonal block, a rectangular frame is fixedly connected to one side of the vertical section of the bending arm, the top of the rectangular frame is connected with a first bolt through threaded fit, the bottom of the rectangular frame is connected with a top block in a sliding mode along the vertical direction, the top block is connected with the first bolt through a first spring, and the bottom of the top block abuts against the polygonal block; a second sliding rod arranged in the front-rear direction in the horizontal direction is arranged on the rack below the bending arm in a sliding mode, a baffle is arranged on the second sliding rod, a second spring is arranged between the baffle and the rack, an L-shaped push rod is connected to the second sliding rod on the rear side of the baffle in a sliding mode, a push block with an inclined driving surface is arranged at the front end of the L-shaped push rod, a third push-pull electromagnet is fixedly connected to the L-shaped push rod, and when the output end of the third push-pull electromagnet extends out and a second linear motion cylinder drives the bending arm to move downwards, the push rod pushes the L-shaped push rod to move forwards through the output end of the third push-pull electromagnet; a mounting plate is arranged at the front end of the second sliding rod, a track groove is fixedly arranged on the front side of the mounting plate, a second guide rail arranged along the horizontal direction is arranged in the track groove in a sliding mode, and the sliding direction of the second guide rail is perpendicular to the movement direction of the L-shaped push rod; a semicircular ejector block used for being in contact with the inclined driving surface is arranged at one end, close to the L-shaped push rod, of the second guide rail, a spring mounting plate is arranged on the rail groove, and one end, close to the push block, of the second guide rail is connected with the spring mounting plate through a third spring; a horizontal deflector rod is arranged at one end of the second guide rail, which is far away from the push block; the sewing unit adopts a sewing machine.
The clamping part comprises an upper clamping arm, a lower clamping arm and an opening and closing control assembly, and the opening and closing control assembly is used for controlling opening and closing between the upper clamping arm and the lower clamping arm.
The opening and closing control assembly comprises a first upright post, a second upright post and a fourth push-pull electromagnet; the two first stand columns are arranged on the top surface of the end part of the cantilever, the two second stand columns are arranged on the bottom surface of the end part of the cantilever, a first block is arranged at the top end of each first stand column, and a second block is arranged at the bottom end of each second stand column; the root parts of the upper clamping arms are arranged on the two first stand columns in a sliding mode, the root parts of the lower clamping arms are arranged on the two second stand columns in a sliding mode, and fourth springs are arranged between the upper clamping arms and the first blocking blocks and between the lower clamping arms and the second blocking blocks; the fourth push-pull electromagnet is fixedly arranged on one side of the end part of the cantilever, the output end of the fourth push-pull electromagnet is rotatably connected with the first connecting rod and the second connecting rod, the other end of the first connecting rod is rotatably connected with the upper clamping arm, and the other end of the second connecting rod is rotatably connected with the lower clamping arm.
The clamping part also comprises a cutting length positioning component; the cutting length positioning assembly comprises a positioning rod, a positioning block, a blocking piece and an L-shaped support arm; the end part of the cantilever is of a Z-shaped structure consisting of a first horizontal section, a vertical section and a second horizontal section; the positioning rod penetrates through the second horizontal section along the length direction and is in clearance fit with the second horizontal section; the positioning block is fixed at one end of the positioning rod and is positioned between the upper clamping arm and the lower clamping arm, and the blocking piece is fixed at the other end of the positioning rod; a fifth spring is sleeved on the positioning rod between the blocking piece and the second horizontal section; the baffle is formed by connecting two sheet bodies, and an obtuse angle is formed between the two sheet bodies; the L-shaped support arm is fixedly connected to the front side of the rack, and the top of the L-shaped support arm is connected with an adjusting bolt used for adjusting the front position and the rear position of the positioning rod in a threaded fit mode.
The clamp holder is connected with the rack in a sliding mode along the vertical direction, the rack is connected with a second adjusting bolt arranged along the vertical direction in a threaded fit mode, and the stud end of the adjusting bolt is rotatably connected with the bottom of the clamp holder.
The transfer part comprises four horizontal cantilevers, the roots of the four cantilevers are fixedly connected with a rotating shaft together, and the bottom of the rotating shaft is connected with a rotary motion output device; the clamping part is arranged at the end part of each cantilever.
The sewing machine comprises a sewing machine body, a sewing machine head, a sewing machine needle and a sewing platform; the sewing machine needle is arranged at the bottom of the sewing machine head, and the sewing platform is positioned below the sewing machine needle.
The first linear motion cylinder and the second linear motion cylinder adopt air cylinders, electric cylinders or hydraulic cylinders.
Due to the adoption of the technical scheme, the invention has the following advantages: the belt ring processing machine can realize automatic feeding, cutting, transferring and sewing of the raw leather strips, so that the leather strips are processed into the belt ring, the belt ring processing machine has high processing efficiency, higher processing quality can be ensured, and the processing quality is consistent.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic diagram of the structure of the transfer unit of the present invention;
FIG. 3 is a schematic view of the feed and cutting unit of the present invention;
FIG. 4 is an enlarged partial schematic view of the feed and cutting unit of the present invention;
FIG. 5 is an enlarged partial schematic view of the feed and cutting unit of the present invention;
FIG. 6 is an enlarged partial schematic view of the feed and cutting unit of the present invention;
FIG. 7 is an enlarged partial schematic view of the feed and cutting unit of the present invention;
FIG. 8 is a schematic view of the structure of the clamping portion of the present invention;
FIG. 9 is a schematic view of the construction of the suturing unit of the present invention.
Detailed Description
The invention is described in detail below with reference to the figures and examples.
As shown in FIG. 1, the present invention provides an automatic leather strap doubling and sewing machine, which comprises a working platform 10, wherein a feeding and cutting unit 20, a sewing unit 30 and a transferring unit 50 are arranged on the working platform 10.
As shown in fig. 2, the transfer unit 50 includes a transfer portion 501 and a clamping portion 502, and the transfer portion 501 is used for transferring the clamping portion 502 between the feeding and cutting unit 20 and the sewing unit 30, so as to cut and sew the raw leather strap.
As shown in fig. 3 to 7, the feeding and cutting unit 20 includes a frame 201, a feeding tray 202 rotatably provided on a top of the frame 201 for winding the leather strips into a roll, and a first linear moving cylinder 203 and a second linear moving cylinder 204 vertically arranged on the frame 201. The output end of the first linear motion cylinder 203 is fixedly connected with a first connecting arm 205, a first sliding rod 206 is fixedly arranged at the top of the first connecting arm 205, and the first sliding rod 206 is slidably connected with the frame 201. A vertical plate 207 is provided at the front end of the first connecting arm 205, and an upper cutting knife 208 is provided at the bottom of the vertical plate 207. The bottom of the first connecting arm 205 is fixedly connected with a first push-pull electromagnet 209, the output end of the first push-pull electromagnet 209 is fixedly connected with a clamping arm 210, the rear side of the vertical plate 207 is provided with a guide rod 211, and the clamping arm 210 is slidably connected with the guide rod 211. A gap for the leather strip to pass through is reserved between the clamping arm 210 and the vertical plate 207. A positioning square hole 213 for the leather strap to pass through is arranged on the frame 201 above the vertical plate 207. A support column 214 is provided on the frame 201 on one side of the positioning square hole 213, two to four horizontal positioning columns 215 are provided on the support column 214, and the horizontal positioning columns 215 are located right above the positioning square hole 213. A clamp 217 is arranged on the frame 201 below the vertical plate 207, and any existing electric mechanical claw can be used as the clamp 217. A second push-pull electromagnet 219 arranged along the front-back direction is further fixedly arranged on the rack 201, the output end of the second push-pull electromagnet 219 is fixedly connected with a second connecting arm 220, the second connecting arm 220 is slidably connected with a first guide rail 221 arranged on the rack 201, a lower cutting knife 224 is arranged at the front end of the second connecting arm 220, and the lower cutting knife 224 is used for being matched with the upper cutting knife 208 to cut the leather strips. The output end of second rectilinear motion cylinder 204 and bending arm 227 fixed connection, bending arm 227 includes horizontal segment and vertical section, the lower extreme of vertical section is provided with axle sleeve 261, rotation connection pivot 262 in the axle sleeve 261, the one end of pivot 262 and the push rod 263 fixed connection who arranges to the upper place slope forward, the other end and the polygonal piece 264 fixed connection of pivot 262, at one side fixed connection rectangle frame 265 of the vertical section of bending arm 227, the top of rectangle frame 265 is connected with first bolt 266 through screw-thread fit, there is kicking block 267 at rectangle frame 265 bottom along vertical direction sliding connection, be connected through first spring 268 between kicking block 267 and the first bolt 266, the bottom and the polygonal piece 264 of kicking block 267 offset. A second sliding rod 270 arranged in the front-rear direction in the horizontal direction is slidably provided on the frame 201 below the bending arm 227, a flap 271 is provided on the second sliding rod 270, a second spring 272 is provided between the flap 271 and the frame 201, an L-shaped push rod 273 is slidably connected on the second sliding rod 270 at the rear side of the flap 271, a push block 275 having an inclined driving surface is provided at the front end of the L-shaped push rod 273, and a third push-pull electromagnet 276 is fixedly connected on the L-shaped push rod 273. When the output end of the third push-pull electromagnet 276 extends and the second linear motion cylinder 204 drives the bending arm 227 to move downward, the push rod 263 pushes the L-shaped push rod 273 to move forward through the output end of the third push-pull electromagnet 276. A mounting plate 269 is provided at a front end of the second slide bar, a rail groove 278 is fixedly provided at a front side of the mounting plate 269, a second guide rail 279 arranged in a horizontal direction is slidably provided in the rail groove 278, and a sliding direction of the second guide rail 279 is perpendicular to a moving direction of the L-shaped push rod 273. A semicircular top block 280 for contacting with the inclined driving surface is provided at one end of the second guide rail 279 near the L-shaped push rod 273, a spring mounting plate 282 is provided on the rail groove 278, and one end of the second guide rail 279 near the push block 275 is connected with the spring mounting plate 282 by a third spring 284. A horizontal toggle lever 286 is provided at an end of the second rail 279 remote from the push block 275.
The working process and principle of the feeding and cutting unit 20 are as follows: a roll of raw hide tape is placed on the feed tray 202 prior to starting the feed and cutting unit. The free end of the leather strap is manually pulled downwards, so that the leather strap passes around each horizontal positioning post 215 in an S shape, then passes downwards through the positioning square hole 213 and then passes through the gap between the clamping arm 210 and the vertical plate 207 until the free end of the leather strap is slightly lower than the gap between the clamping arm 210 and the vertical plate 207. After the feeding and cutting unit is started, firstly, the output end of the first push-pull type electromagnet 209 extends forwards, and pushes the clamping arm 210 to move forwards, so that the clamping arm 210 is matched with the vertical plate 207 to clamp the leather strips. Then, the output end of the first linear motion cylinder 203 moves downward to pull the free end of the leather strip downward, and at this time, the supply tray 202 rotates to perform the supply of the leather strip. When the free end of the strap is pulled down to the position of the gripper 217, the first linear motion cylinder 203 stops moving and the gripper 217 is then activated to grip the free end of the strap. Thereafter, the output end of the first push-pull electromagnet 209 is retracted so that the gripping arm 210 leaves the leather strip, and then the output end of the first linear motion cylinder 203 is raised. Then, the second linear motion cylinder 204 is started, the output end of the second linear motion cylinder 204 drives the push rod 263 to move downwards through the bending arm 227, at this time, the output end of the third push-pull electromagnet 276 is in an extended state, and the push rod 263 pushes the L-shaped push rod 273 to move forwards through the output end of the third push-pull electromagnet 276. The push rod 273, which is moved forward, first pushes the second rail 279 to move horizontally by the inclined driving surface, thereby driving the horizontal shift lever 286 to extend horizontally to one side of the leather strap. The gripper 217 is then controlled to release the free end of the strap. When the push rod 273 is moved forward to be in contact with the flap 271, the push rod 273 is moved forward continuously to move the second guide rail 279 forward, so that the extended horizontal lever 286 is moved forward, whereby the leather strap is shifted into the grip 502 of the transfer unit 50 in a folded state by the horizontal lever 286. The gripping portion 502 then grips the folded strip. After the holding portion 502 holds the folded leather strap, the output end of the second push-pull type electromagnet 219 is controlled to extend forward until the lower cutting blade 224 is positioned directly below the upper cutting blade 208. The output end of the first linear motion cylinder 203 is then controlled to move downward again, so that the upper cutting knife 208 is driven to move downward to the lower cutting knife 224, and the knife edges are closed to cut off the leather strips.
The sewing unit 30 employs a sewing machine. After the supply and cutting unit 20 cuts the leather strips, the holding portion 502 holds the cut leather strips in the folded state, and rotates to the position of the sewing unit 30 by the driving of the transfer portion 501. The stitching unit 30 is then activated to stitch the folded strip at the end to form a belt loop. The sewn belt loop is then transferred by the transfer unit 50 to a finished product input station, namely: and (4) transferring the belt ring which is sewn to the appointed station, and then releasing the belt ring.
Further, as shown in fig. 2, the transfer portion 501 includes four horizontal cantilevers 505, the roots of the four cantilevers 505 are jointly and fixedly connected with a rotating shaft 506, and the bottom of the rotating shaft 506 is connected with a rotary motion output device 508. A clamping portion 502 is provided at an end of each cantilever 505.
Further, as shown in fig. 8, the clamping portion 502 includes an upper clamping arm 510, a lower clamping arm 511, and an opening and closing control component for controlling the opening and closing between the upper clamping arm 510 and the lower clamping arm 511.
Further, the opening and closing control assembly comprises a first upright post 513, a second upright post 514 and a fourth push-pull electromagnet 515. The two first vertical columns 513 are disposed on the top surface of the end portion of the cantilever 505, the two second vertical columns 514 are disposed on the bottom surface of the end portion of the cantilever 505, a first block 517 is disposed on the top end of each first vertical column 513, and a second block 518 is disposed on the bottom end of each second vertical column 514. The root of the upper clamping arm 510 is slidably disposed on the two first posts 513, the root of the lower clamping arm 511 is slidably disposed on the two second posts 514, and fourth springs 520 are disposed between the upper clamping arm 510 and the first block 517 and between the lower clamping arm 511 and the second block 518. The fourth push-pull electromagnet 515 is fixedly arranged on one side of the end part of the cantilever 505, the output end of the fourth push-pull electromagnet 515 is rotatably connected with the first connecting rod 522 and the second connecting rod 523, the other end of the first connecting rod 522 is rotatably connected with the upper clamping arm 510, and the other end of the second connecting rod 523 is rotatably connected with the lower clamping arm 511.
Further, the clamping portion 502 also includes a cut length positioning assembly 530. The cut length positioning assembly 530 includes a positioning rod 531, a positioning block 532, a blocking piece 533, and an L-shaped support arm 534. The end of the cantilever 505 is a "Z" shaped structure made up of a first horizontal segment 5051, a vertical segment 5052, and a second horizontal segment 5053. The positioning rod 531 extends through the second horizontal segment 5053 in the length direction and is in clearance fit with the second horizontal segment 5053. The positioning block 532 is fixed to one end of the positioning rod 531 and located between the upper clamp arm 510 and the lower clamp arm 511, and the stopper 533 is fixed to the other end of the positioning rod 531. A fifth spring 536 is sleeved on the positioning rod 531 between the blocking piece 533 and the second horizontal segment 5053. The blocking piece 533 is formed by connecting two pieces 5331, and an obtuse angle is formed between the two pieces 5331. The L-shaped arm 534 is fixedly connected to the front side of the frame 201, and an adjusting bolt 538 for adjusting the front and rear positions of the positioning lever 531 is connected to the top of the L-shaped arm 534 in a screw-fit manner. The distance between the positioning block 532 positioned at the front end of the positioning rod 531 and the clamping end can be controlled through the adjusting bolt 538, so that the length of the leather strip which is pushed into the clamping part 502 by the horizontal shifting rod 286 is controlled, the length of the cut leather strip is changed, and the purpose of controlling the size of a finished product belt ring is finally achieved. In conjunction with the cut length positioning assembly 530, the holder 217 should be height-adjustable on the frame 201 to control the cut length of the leather strip. Therefore, the clamper 217 is slidably connected with the frame 201 in the vertical direction, and at the same time, the frame 201 is connected with an adjusting bolt 290 arranged in the vertical direction through thread fit, and the stud end of the adjusting bolt 290 is rotatably connected with the bottom of the clamper 217.
Further, as shown in fig. 9, the sewing machine includes a sewing machine body 301, a sewing machine head 302, a sewing machine needle 303, and a sewing table 304. The sewing machine needle 303 is disposed at the bottom of the sewing machine head 302, and the sewing platform 304 is located below the sewing machine needle 303.
Further, the first linear motion cylinder 203 and the second linear motion cylinder 204 employ an air cylinder, an electric cylinder, or a hydraulic cylinder.
The present invention has been described in terms of the above embodiments, and various modifications, arrangements, and connections of the components may be made without departing from the scope of the invention.
Claims (8)
1. The utility model provides an automatic change leather strap fifty percent discount sewing machine which characterized in that: the sewing machine comprises a working platform, wherein a feeding and cutting unit, a sewing unit and a transferring unit are arranged on the working platform;
the transfer unit comprises a transfer part and a clamping part, and the transfer part is used for transferring the clamping part between the feeding and cutting unit and the sewing unit so as to cut and sew the raw leather strips;
the feeding and cutting unit comprises a rack, a feeding disc for winding leather strips into coils is rotatably arranged at the top of the rack, a first linear motion cylinder and a second linear motion cylinder which are arranged along the vertical direction are arranged on the rack, the output end of the first linear motion cylinder is fixedly connected with a first connecting arm, a first slide bar is fixedly arranged at the top of the first connecting arm and is connected with the rack in a sliding manner, a vertical plate is arranged at the front end of the first connecting arm, a cutting knife is arranged at the bottom of the vertical plate, a first push-pull electromagnet is fixedly connected at the bottom of the first connecting arm, the output end of the first push-pull electromagnet is fixedly connected with a clamping arm, a guide rod is arranged at the rear side of the vertical plate, and the clamping arm is connected with the guide rod in a sliding manner; a gap for leather strips to pass through is reserved between the clamping arm and the vertical plate, a positioning square hole for leather strips to pass through is formed in the rack above the vertical plate, a supporting column is arranged on the rack on one side of the positioning square hole, two to four horizontal positioning columns are arranged on the supporting column, and the horizontal positioning columns are located right above the positioning square hole; the machine frame is arranged below the vertical plate and is provided with a clamp holder, the machine frame is also fixedly provided with a second push-pull electromagnet arranged along the front-back direction, the output end of the second push-pull electromagnet is fixedly connected with a second connecting arm, the second connecting arm is in sliding connection with a first guide rail arranged on the machine frame, the front end of the second connecting arm is provided with a lower cutting knife, and the lower cutting knife is matched with an upper cutting knife so as to cut the leather strips; the output end of the second linear motion cylinder is fixedly connected with a bending arm, the bending arm comprises a horizontal section and a vertical section, the lower end of the vertical section is provided with a shaft sleeve, a rotating shaft is rotatably connected in the shaft sleeve, one end of the rotating shaft is fixedly connected with a push rod which is obliquely arranged forwards and upwards, the other end of the rotating shaft is fixedly connected with a polygonal block, a rectangular frame is fixedly connected to one side of the vertical section of the bending arm, the top of the rectangular frame is connected with a first bolt through threaded fit, the bottom of the rectangular frame is connected with a top block in a sliding mode along the vertical direction, the top block is connected with the first bolt through a first spring, and the bottom of the top block abuts against the polygonal block; a second sliding rod arranged in the front-rear direction in the horizontal direction is arranged on the rack below the bending arm in a sliding mode, a baffle is arranged on the second sliding rod, a second spring is arranged between the baffle and the rack, an L-shaped push rod is connected to the second sliding rod on the rear side of the baffle in a sliding mode, a push block with an inclined driving surface is arranged at the front end of the L-shaped push rod, a third push-pull electromagnet is fixedly connected to the L-shaped push rod, and when the output end of the third push-pull electromagnet extends out and a second linear motion cylinder drives the bending arm to move downwards, the push rod pushes the L-shaped push rod to move forwards through the output end of the third push-pull electromagnet; a mounting plate is arranged at the front end of the second sliding rod, a track groove is fixedly arranged on the front side of the mounting plate, a second guide rail arranged along the horizontal direction is arranged in the track groove in a sliding mode, and the sliding direction of the second guide rail is perpendicular to the movement direction of the L-shaped push rod; a semicircular ejector block used for being in contact with the inclined driving surface is arranged at one end, close to the L-shaped push rod, of the second guide rail, a spring mounting plate is arranged on the rail groove, and one end, close to the push block, of the second guide rail is connected with the spring mounting plate through a third spring; a horizontal deflector rod is arranged at one end of the second guide rail, which is far away from the push block;
the sewing unit adopts a sewing machine.
2. The automated foxing-welt-doubling and sewing machine of claim 1, further comprising: the transfer part comprises four horizontal cantilevers, the roots of the four cantilevers are fixedly connected with a rotating shaft together, and the bottom of the rotating shaft is connected with a rotary motion output device; the clamping part is arranged at the end part of each cantilever.
3. An automated foxing-doubled sewing machine as claimed in claim 2, wherein: the clamping part comprises an upper clamping arm, a lower clamping arm and an opening and closing control assembly, and the opening and closing control assembly is used for controlling opening and closing between the upper clamping arm and the lower clamping arm.
4. An automated foxing-doubled sewing machine as claimed in claim 3, wherein: the opening and closing control assembly comprises a first upright post, a second upright post and a fourth push-pull electromagnet; the two first stand columns are arranged on the top surface of the end part of the cantilever, the two second stand columns are arranged on the bottom surface of the end part of the cantilever, a first block is arranged at the top end of each first stand column, and a second block is arranged at the bottom end of each second stand column; the root parts of the upper clamping arms are arranged on the two first stand columns in a sliding mode, the root parts of the lower clamping arms are arranged on the two second stand columns in a sliding mode, and fourth springs are arranged between the upper clamping arms and the first blocking blocks and between the lower clamping arms and the second blocking blocks; the fourth push-pull electromagnet is fixedly arranged on one side of the end part of the cantilever, the output end of the fourth push-pull electromagnet is rotatably connected with the first connecting rod and the second connecting rod, the other end of the first connecting rod is rotatably connected with the upper clamping arm, and the other end of the second connecting rod is rotatably connected with the lower clamping arm.
5. An automated foxing-doubled sewing machine as claimed in claim 3, wherein: the clamping part also comprises a cutting length positioning component; the cutting length positioning assembly comprises a positioning rod, a positioning block, a blocking piece and an L-shaped support arm; the end part of the cantilever is of a Z-shaped structure consisting of a first horizontal section, a vertical section and a second horizontal section; the positioning rod penetrates through the second horizontal section along the length direction and is in clearance fit with the second horizontal section; the positioning block is fixed at one end of the positioning rod and is positioned between the upper clamping arm and the lower clamping arm, and the blocking piece is fixed at the other end of the positioning rod; a fifth spring is sleeved on the positioning rod between the blocking piece and the second horizontal section; the baffle is formed by connecting two sheet bodies, and an obtuse angle is formed between the two sheet bodies; the L-shaped support arm is fixedly connected to the front side of the rack, and the top of the L-shaped support arm is connected with an adjusting bolt used for adjusting the front position and the rear position of the positioning rod in a threaded fit mode.
6. An automated foxing-doubled sewing machine as claimed in claim 5, wherein: the clamp holder is connected with the rack in a sliding mode along the vertical direction, the rack is connected with a second adjusting bolt arranged along the vertical direction in a threaded fit mode, and the stud end of the adjusting bolt is rotatably connected with the bottom of the clamp holder.
7. The automated foxing-welt-doubling and sewing machine of claim 1, further comprising: the sewing machine comprises a sewing machine body, a sewing machine head, a sewing machine needle and a sewing platform; the sewing machine needle is arranged at the bottom of the sewing machine head, and the sewing platform is positioned below the sewing machine needle.
8. The automated foxing-welt-doubling and sewing machine of claim 1, further comprising: the first linear motion cylinder and the second linear motion cylinder adopt air cylinders, electric cylinders or hydraulic cylinders.
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| CN201810934089.7A CN109183289B (en) | 2018-08-16 | 2018-08-16 | Automatic leather strap doubling and sewing machine |
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| CN201810934089.7A CN109183289B (en) | 2018-08-16 | 2018-08-16 | Automatic leather strap doubling and sewing machine |
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| CN109183289B true CN109183289B (en) | 2020-06-30 |
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| CN111232634B (en) * | 2020-01-14 | 2021-09-10 | 肇庆市丰威实业有限公司 | A automatic strap machine of going up for case and bag draw zipper head |
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| GB465728A (en) * | 1935-11-09 | 1937-05-10 | Percival Thomas Evans | Improved method of and apparatus for manufacturing links for v-belting from sheet material |
| CN104480647A (en) * | 2014-11-22 | 2015-04-01 | 宁波舒普机电科技有限公司 | Braid processing method |
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