CN115648717A - Stitching device for inner and outer woven bags - Google Patents

Abstract

The invention discloses a sewing device for inner and outer woven bags, and relates to a woven bag processing device. The automatic bag opening and closing device comprises a frame body provided with a conveying mechanism, an opening mechanism, an ultrasonic sewing mechanism and a leveling and blanking mechanism, and further comprises a rotary bag turning mechanism and a woven bag opening mechanism matched with the opening mechanism for use; the rotary bag turning mechanism consists of a bag opening rotating assembly and a bag tail rotating assembly; the sack rotating assembly passes through actuating mechanism and movably installs on the support body of opening mechanism one side, the braided bag props a mouthful mechanism and installs on actuating mechanism, so that the braided bag props a mouthful mechanism and can alternate in opening the mechanism. The invention effectively prevents the phenomenon that the inner bag and the outer bag are easy to fall off after being separated from each other, improves the production reliability, and ensures that the sewed part of the inner bag and the outer bag is smooth and beautiful.

Description

Stitching device for inner and outer bags of woven bag

Technical Field

The invention relates to a woven bag processing device, in particular to a sewing device for inner and outer woven bags.

Background

The sewing procedure of the inner and outer bags of the traditional woven bag is mostly realized by adopting a manual sewing mode. The mode not only wastes labor cost, but also has lower working efficiency and often cannot meet the production requirement.

In order to solve the problem, some equipment manufacturers provide corresponding woven bag production devices. The production line for the woven bags disclosed by the publication No. CN208881195U comprises an inner bag conveying line, an outer bag conveying line and a woven bag conveying line, wherein an inner bag uncoiling mechanism, an inner bag fixed-length cutting mechanism, a turnover mechanism and an inner bag pushing mechanism are sequentially arranged on the inner bag conveying line along the conveying direction of the inner bag, the inner bag uncoiling mechanism is used for supporting an inner bag coil and uncoiling the inner bag coil, the turnover mechanism is used for fixing and overturning the end part, close to the outer bag, of the inner bag, and the inner bag pushing mechanism is used for pushing the inner bag into the outer bag; an outer bag uncoiling mechanism, an outer bag fixed-length cutting mechanism and an outer bag opening mechanism are sequentially arranged on the outer bag conveying line along the conveying direction of the outer bags; the woven bag conveying line is sequentially provided with a bottom sewing mechanism, an ultrasonic welding mechanism and a leveling mechanism along the conveying direction of the woven bag, wherein the bottom sewing mechanism is used for performing spot welding sewing on the inner bag and the outer bag at the periphery of the opening of the woven bag, and the leveling mechanism is used for leveling and conveying the woven bag. The production line can automatically complete the production of woven bags, improves the automation degree, and has high efficiency and stable work.

However, in practical applications, the production line still has some problems. For example, the mechanism part is sewed up to the inside and outside bag of this production line, and the braided bag of the sack of its braided bag opens the device and adsorbs the back with the upper and lower layer of interior outer bag separately, often has the unstable phenomenon of absorption, leads to the part of being adsorbed to appear dropping, influences normal production. The detection shows that the main reason for the phenomenon is that the air leakage phenomenon easily occurs in the adsorption process of the opening mechanism due to the fact that the surface of the outer bag is uneven and gaps exist among the weaving strips. Moreover, the phenomenon is continuous, so that the inner bag is unstably adsorbed by the opening mechanism, and the inner bag is easy to drop.

Disclosure of Invention

The invention aims to solve the technical problem of the prior art, provides a sewing device for inner and outer bags of a woven bag, and solves the problem that the inner bag is easy to be unstably adsorbed and falls off due to continuous air leakage in the adsorption process of an opening mechanism because the surface of the outer bag is uneven and gaps exist among woven strips.

The invention relates to a sewing device for inner and outer woven bags, which comprises a frame body provided with a conveying mechanism, an opening mechanism, an ultrasonic sewing mechanism and a leveling blanking mechanism, and further comprises a rotary bag turning mechanism and a woven bag opening mechanism matched with the opening mechanism; the rotary bag turning mechanism consists of a bag opening rotating assembly and a bag tail rotating assembly; the sack rotating assembly passes through actuating mechanism and movably installs on the support body of opening mechanism one side, the braided bag props a mouthful mechanism and installs on actuating mechanism, so that the braided bag props a mouthful mechanism and can alternate in opening the mechanism.

The woven bag opening supporting mechanism comprises a connecting rod, an upper air pipe and a lower air pipe; the connecting rod is fixedly arranged on the driving mechanism and extends to one side of the bag opening rotating assembly close to the opening mechanism; the upper air pipe and the lower air pipe are fixedly arranged at the tail end of the connecting rod, one side of the upper air pipe, which is far away from the lower air pipe, is provided with a plurality of upper air outlet holes, and one side of the lower air pipe, which is far away from the upper air pipe, is provided with a plurality of lower air outlet holes; the upper air pipe and the lower air pipe are both connected with an external air supply source.

And a bag opening flattening mechanism is installed on one side of the connecting rod.

The bag opening flattening mechanism comprises a side rod, a first mounting seat, a first bolt and a pressing plate; the side rod is fixedly arranged on one side of the connecting rod, the first mounting seat is fixedly arranged on one side of the side rod, the first bolt is screwed in the first mounting seat, and the first bolt penetrates through the first mounting seat; the pressing plate is provided with a through hole with a diameter larger than that of the first bolt, and the first bolt is inserted into the through hole; the tail end of the first bolt is screwed with a locknut; and an elastic stretching assembly which enables the pressure plate to be always in an inclined state is arranged between the pressure plate and the side rods.

The elastic stretching assembly comprises a second mounting seat, a second bolt and a first spring; the second mounting seat is fixedly mounted on one side of the side rod, the second bolt is screwed in the second mounting seat, and the second bolt penetrates through the second mounting seat; one end of the first spring is fixedly installed at the end part of the second bolt, the other end of the first spring is fixedly installed on the pressing plate, and the joint of the first spring and the pressing plate is located on the pressing plate, far away from one side of the mounting base, of the through hole.

The driving mechanism comprises a first support, a first air cylinder, an installation plate and two first sliding rods; the first support is fixedly arranged on the first support body, the two first sliding rods are fixedly arranged above the first support, and the mounting plate is provided with two through holes which are in one-to-one corresponding sliding connection with the two sliding rods; the first air cylinder is fixedly installed on the first support, and the piston end of the first air cylinder is fixedly installed on the installation plate.

The bag opening rotating assembly comprises two rollers, a rotating driving part and a hinge driving part, wherein the rotating driving part is used for driving the two rollers to synchronously rotate in the same direction, and the hinge driving part is used for driving the rollers to move towards the outer side of the frame body;

the bag tail rotating assembly comprises a lifting driving part and a translation driving part, wherein the lifting driving part is used for lifting the bag tail of the woven bag from the conveying mechanism, and the translation driving part is used for driving the lifting driving part to move back and forth along the conveying direction.

The hinge driving part comprises a second cylinder, a V-shaped connecting piece and a support rod; the support rod is fixedly arranged on one side of the mounting plate, and the cylinder II is rotatably arranged between the support rod and the mounting plate; the lower extreme at branch is installed in the rotation of the V type corner of V type connecting piece, the one end of V type connecting piece is connected with the piston end rotation of cylinder two, the other end rotation of V type connecting piece installs the pivot, the pivot is close to the braided bag and props the one end fixed mounting of a mouthful mechanism and has the gyro wheel, the other end and the drive end of rotation drive division of pivot are connected.

The lifting driving part comprises an upper supporting plate, a lower supporting plate, a motor II and a mounting box II; the upper supporting plate is fixedly arranged at the driving end of the translation driving part, a third air cylinder is arranged below the upper supporting plate, and the lower supporting plate is fixedly arranged at the piston end of the third air cylinder; the second motor is fixedly arranged below the lower supporting plate, and the second mounting box is fixedly connected with an output shaft of the second motor; two sides of the second mounting box are provided with a third clamping disc through elastic components, a second rotary table is arranged on the second mounting box on one side of the third clamping disc, a double-shaft motor is arranged in the second mounting box, and two shaft ends of the double-shaft motor are fixedly connected with the two second rotary tables in a one-to-one correspondence manner; and a second rotating arm is fixedly arranged on the circumferential surface of the second rotating disk, and a fourth clamping disk which can be in three-phase contact with the clamping disk is fixedly arranged at the tail end of the second rotating arm.

The conveying mechanism comprises two electric slide rails symmetrically arranged below the frame body, a first installation box, a first motor, a first rotary table, a first rotating arm, a first clamping disc and a second clamping disc, wherein the first installation box, the first motor, the first rotary table, the first rotating arm, the first clamping disc and the second clamping disc are arranged on a slide block of each electric slide rail; the first mounting box is fixedly mounted on the sliding block, the first motor is fixedly mounted on one side of the first mounting box, and an output shaft of the first motor penetrates through the first mounting box and extends into the first mounting box; the first rotating disc is fixedly arranged on an output shaft of the first motor, the first rotating arm is fixedly arranged on one side of the first rotating disc, the first clamping disc is fixedly arranged at the tail end of the first rotating arm, and the first mounting box is fixedly provided with a second clamping disc which can be in contact with the first clamping disc; and the frame body above the electric slide rail is provided with a long slotted hole, the two clamping discs are positioned in the long slotted hole, and the top end surfaces of the two clamping discs are flush with the top end surface of the frame body.

Advantageous effects

The invention has the advantages that:

1. the woven bag opening supporting mechanism mainly composed of an upper air pipe and a lower air pipe is arranged, and after the two air pipes enter the bag opening, air supply is carried out on the air pipes through an external air supply source. The air is blown out from the air outlet and blown to the bag opening, so that the bag opening is more uniformly opened, and the problem that the inner bag is unstably adsorbed and falls off due to continuous air leakage in the adsorption process of the opening mechanism caused by uneven surface of the outer bag and gaps among the weaving strips is avoided. The problem that the inner bag and the outer bag are easy to fall off after being separated is solved, and the production reliability is improved.

2. Set up the sack mechanism that flattens in one side of ultrasonic wave sewing mechanism to the department of sewing up of treating that makes the sack at first sews up through flattening the processing again, can effectually avoid among the overturning process because of the interior outer bag not laminating have the unevenness that the clearance appears, lead to the not pleasing to the eye problem of interior outer bag splice behind the ultrasonic bonding.

Drawings

FIG. 1 is a perspective view of a suturing device of the present invention;

FIG. 2 is a partial schematic view of the delivery mechanism of the present invention;

FIG. 3 is an enlarged view of the structure at A in FIG. 1;

FIG. 4 is an enlarged view of the structure of FIG. 3 at C;

FIG. 5 is an enlarged view of the structure at B in FIG. 1;

fig. 6 is a sectional view of an installation structure of a sleeve and a grip disk iii of the present invention.

Wherein: 1-frame body, 2-conveying mechanism, 3-opening mechanism, 4-ultrasonic sewing mechanism, 5-woven bag opening supporting mechanism, 6-bag opening rotating assembly, 7-bag tail rotating assembly, 8-driving mechanism, 9-bag opening flattening mechanism, 10-photoelectric switch, 11-conveyor belt, 12-driving device, 13-guide plate, 14-material receiving mechanism, 21-electric slide rail, 22-installation box I, 23-motor I, 24-turntable I, 25-rotating arm I, 26-clamping disk I, 27-clamping disk II, 28-long groove hole, 31-cylinder IV, 32-sealing air pipe I, 33-sealing air pipe II, 34-sliding rod, 35-suction disk, 36-air hole II 41-six cylinder, 42-ultrasonic welding device, 43-supporting platform, 51-connecting rod, 52-upper air pipe, 53-lower air pipe, 54-air outlet hole, 61-roller, 62-two cylinder, 63-V-shaped connecting piece, 64-supporting rod, 65-three motor, 66-driven wheel, 67-driving belt, 71-upper supporting plate, 72-lower supporting plate, 73-two motor, 74-mounting box II, 75-three cylinder, 76-three clamping disc, 77-two rotary disc, 78-two rotary arm, 79-four clamping disc, 710-two bracket, 711-five cylinder, 712-mounting sliding plate, 713-two slide rod, 714-sleeve, 715-two spring, 716-movable rod, 717-limiting ring, 81-bracket I, 82-cylinder I, 83-mounting plate, 84-sliding rod I, 91-side rod, 92-mounting seat I, 93-bolt I, 94-pressing plate, 95-mounting seat II, 96-bolt II and 97-spring I.

Detailed Description

The invention is further described below with reference to examples, but not to be construed as being limited thereto, and any number of modifications which can be made by anyone within the scope of the claims are also within the scope of the claims.

Referring to fig. 1, the sewing device for inner and outer woven bags of the invention comprises a frame body 1 provided with a conveying mechanism 2, an opening mechanism 3, a rotary bag turning mechanism, a woven bag opening mechanism 5 used in cooperation with the opening mechanism, an ultrasonic sewing mechanism 4 and a leveling and blanking mechanism. Wherein, the one side of 1 tip of support body is established to the feed end, and the braided bag passes through the feed end and is gone up to support body 1. The other side of the end part of the frame body 1 is provided with a photoelectric switch 10 for detecting whether a woven bag is arranged on the frame body 1. If there is the braided bag to be placed on support body 1, then photoelectric switch 10 signals to PLC, and PLC will start conveying mechanism 2 to convey the braided bag.

The conveying mechanism 2 is used for conveying the woven bag sleeved with the inner bag in the outer bag to the opening mechanism. Referring to fig. 2, the conveying mechanism 2 includes two electric slide rails 21 symmetrically installed below the frame body 1, a first installation box 22 installed on a slide block of the electric slide rail 21, a first motor 23, a first rotary table 24, a first rotary arm 25, a first clamping disc 26, and a second clamping disc 27. The first mounting box 22 is fixedly mounted on the sliding block, the first motor 23 is fixedly mounted on one side of the first mounting box 22, and an output shaft of the first motor 23 penetrates through the first mounting box 22 and extends into the first mounting box 22. The first rotating disc 24 is fixedly arranged on an output shaft of the first motor 23, the first rotating arm 25 is fixedly arranged on one side of the first rotating disc 24, the first clamping disc 26 is fixedly arranged at the tail end of the first rotating arm 25, and the second clamping disc 27 which can be in contact with the first clamping disc 26 and is completely matched after being in contact is fixedly arranged on the first installation box 22. A long slot hole 28 is formed in the frame body 1 above the electric slide rail 21, the second clamping disc 27 is located in the long slot hole 28, and the top end face of the second clamping disc 27 is flush with the top end face of the frame body 1.

When the photoelectric switch 10 sends a signal to the PLC, the PLC sends a signal to a motor controller of the first motor 23, so that the first motor 23 acts to drive the first rotating arm 25 and the first clamping disk 26 to rotate. When the first clamping disk 26 is contacted with the second clamping disk 27, the bag tail of the woven bag can be clamped. After the clamping disc clamps the woven bag, the electric slide rail 21 is started. Under the driving action of the electric slide rail 21, the woven bag is conveyed to the rotary bag turning mechanism of the sewing device.

After the woven bag is conveyed to the rotary bag overturning mechanism, the opening mechanism 3 is firstly actuated. The opening mechanism 3 is used for opening the bag opening at the end to be sewn of the woven bag, and opening the bag openings of the inner bag and the outer bag at the same time.

Referring to fig. 3, the opening mechanism 3 of the present embodiment includes a cylinder four 31, a sealing air pipe one 32 and a sealing air pipe two 33. The cylinder four 31 is fixedly arranged on the bracket one 81, and the sealing air pipe one 32 is fixedly arranged at the tail end of the cylinder four 31. Two sliding rods 34 are fixedly arranged above the first sealed air pipe 32, and the sliding rods 34 are movably inserted in the first bracket 81. One side of the first sealing air pipe 32, which is far away from the fourth air cylinder 31, is provided with a plurality of first air holes, and suction cups 35 are arranged in the first air holes. The second sealed air pipe 33 is fixedly installed in the frame body 1 below the first sealed air pipe 32, and the surface of the second sealed air pipe 33 is flush with the surface of the frame body 1. A plurality of second air holes 36 are formed in one side, close to the first sealing air pipe 32, of the second sealing air pipe 33, and the first sealing air pipe 32 and the second sealing air pipe 33 are connected with an external vacuum pump.

When the braided bag stops the conveying back, cylinder four 31 action to drive sealed trachea one 32 and move down, and after the piston rod of cylinder four 31 extended to the longest, cylinder four 31 stopped the action, and sucking disc 35 at this moment will press on the braided bag. And starting a vacuum pump, and exhausting the sealed air pipe through the vacuum pump. Because the inner bag is a plastic bag made of a plastic film and is not air-permeable, the two sides of the woven bag can be respectively adsorbed on the corresponding sealed air pipes by pumping the two sealed air pipes. When the cylinder four 31 acts to make the piston rod contract, the upper side of the woven bag is taken up, so that the bag opening of the woven bag is opened.

The rotary bag turning mechanism consists of a bag opening rotating assembly 6 and a bag tail rotating assembly 7 and is used for driving the woven bag to integrally rotate by taking the central line of the woven bag as an axis. The bag mouth rotating assembly 6 is movably arranged on the frame body 1 at one side of the opening mechanism 3 through a driving mechanism 8. The woven bag opening supporting mechanism 5 is installed on the driving mechanism 8, so that the woven bag opening supporting mechanism 5 can be inserted into the opening mechanism 3 in a penetrating mode.

The driving mechanism 8 includes a first bracket 81, a first cylinder 82, a mounting plate 83, and two first sliding rods 84. The first support 81 is fixedly installed on the frame body 1, the first two sliding rods 84 are fixedly installed above the first support 81, and two through holes which are in one-to-one corresponding sliding connection with the first two sliding rods 84 are formed in the installing plate 83. The first cylinder 82 is fixedly mounted on the first bracket 81, and the piston end of the first cylinder 82 is fixedly mounted on the mounting plate 83.

Through the flexible action of cylinder 82, can drive mounting panel 83 and install sack swivel subassembly 6 and the braided bag on mounting panel 83 and prop a mouthful mechanism 5 and carry out the back-and-forth movement to realize sack swivel subassembly 6 and braided bag and prop a mouthful mechanism 5 and get into or shift out the sack.

Referring to fig. 4, the woven bag opening supporting mechanism 5 includes a connecting rod 51, an upper air pipe 52, and a lower air pipe 53. Connecting rod 51 fixed mounting is on mounting panel 83, and connecting rod 51 extends to sack rotating assembly 6 and is close to one side of opening mechanism 3 to make actuating mechanism 8 drive the braided bag and prop mouthful mechanism 5 and sack rotating assembly 6 when moving toward the braided bag direction, the braided bag props mouthful mechanism 5 and at first enters into the sack. Go up trachea 52 and lower trachea 53 and all fixed mounting at the end of connecting rod 51, go up trachea 52 and seted up a plurality of ventholes 54 on keeping away from the one side of lower trachea 53, lower trachea 53 is kept away from the one side of going up trachea 52 and is seted up a plurality of ventholes down. The upper air pipe 52 and the lower air pipe 53 are connected to an external air supply source.

When the piston rod of the first cylinder 82 of the driving mechanism 8 extends and the woven bag opening supporting mechanism 5 enters the bag opening, the external air supply source supplies air to the air pipe. Gas is blown out from the air outlet and blown to the bag opening, so that the bag opening is more uniformly opened, and the problem that the inner bag is unstably adsorbed and falls off due to continuous air leakage in the adsorption process of the opening mechanism 3 caused by uneven surface of the outer bag and gaps among the weaving strips is avoided.

The bag opening rotating assembly 6 of this embodiment includes two rollers 61 and a rotation driving portion for driving the two rollers 61 to rotate synchronously and in the same direction, and a hinge driving portion for driving the rollers 61 to move toward the outside of the frame body 1. The bag tail rotating assembly 7 comprises a lifting driving part for lifting the bag tail of the woven bag from the conveying mechanism 2 and a translation driving part for driving the lifting driving part to move back and forth along the conveying direction.

Specifically, the rotation driving portion includes a third motor 65, a driving wheel, and two driven wheels 66. The motor three 65 is installed at one side of the installation plate 83, and an output shaft of the motor three 65 penetrates through the installation plate 83. The driving wheel is fixedly arranged at the tail end of an output shaft of the motor III 65. The driving wheel is mounted on a mounting plate 83 on one side of the driving wheel. The hinge driving part comprises a second air cylinder 62, a V-shaped connecting piece 63 and a support rod 64. The supporting rod 64 is fixedly arranged on one side of the mounting plate 83, and the second air cylinder 62 is rotatably arranged between the supporting rod 64 and the mounting plate 83. The lower extreme at branch 64 is installed in the rotation of the V type corner of V type connecting piece 63, and the one end of V type connecting piece 63 is connected with the piston end rotation of two 62 cylinders, and the other end of V type connecting piece 63 rotates installs the pivot, and the pivot is close to the one end fixed mounting that the braided bag propped mouthful mechanism 5 and is had gyro wheel 61, and the other end fixed mounting of pivot has one to follow driving wheel 66. The driving wheel, the tensioning wheel and the two driven wheels 66 are connected by a transmission belt 67.

Referring to fig. 5 and 6, the translation driving part includes a second bracket 710, a fifth cylinder 711, and a mounting slide 712. The lifting driving part comprises an upper supporting plate 71, a lower supporting plate 72, a third air cylinder 75, a second motor 73 and a second mounting box 74. The second support 710 is fixedly arranged on the frame body 1, the fifth cylinder 711 is fixedly arranged on the second support 710, and the upper support plate 71 is fixedly arranged at the tail end of a piston rod of the fifth cylinder 711. The upper support plate 71 is fixedly connected with a mounting sliding plate 712, and the mounting sliding plate 712 is slidably mounted above the second bracket 710. And a third cylinder 75 is arranged below the upper supporting plate 71, and the lower supporting plate 72 is fixedly arranged at the piston end of the third cylinder 75. Four second sliding rods 713 are fixedly mounted below the upper support plate 71, the second sliding rods 713 penetrate through the lower support plate 72, and the second sliding rods 713 are connected with the penetrating parts in a sliding mode. The second motor 73 is fixedly arranged below the lower supporting plate 72, and the second mounting box 74 is fixedly connected with an output shaft of the second motor 73. To ensure stability, the output shaft of the second motor 73 may be connected to the lower support plate 72 through a bearing housing.

The equal fixed mounting in both sides of two 74 of installation boxes has sleeve 714, and the activity is pegged graft in the sleeve 714 has movable rod 716, and the inner wall of sleeve 714 below and the outer wall of movable rod 716 top all are equipped with spacing ring 717, and there is the interference face two spacing rings 717 to avoided movable rod 716 to drop from sleeve 714. A third clamping disc 76 is fixedly arranged below the movable rod 716, and a second spring 715 is sleeved on the movable rod 716 between the third clamping disc 76 and the sleeve 714, so that the two clamping discs have a buffer function when clamping the woven bag. A second rotating disc 77 is arranged on the second mounting box 74 on one side of the third clamping disc 76, a double-shaft motor is mounted in the second mounting box 74, and two shaft ends of the double-shaft motor are fixedly connected with the second rotating discs 77 in one-to-one correspondence. A second rotating arm 78 is fixedly arranged on the circumferential surface of the second rotating disk 77, and a fourth clamping disk 79 which can be contacted with the third clamping disk 76 is fixedly arranged at the tail end of the second rotating arm 78. In addition, the frame body 1 positioned below the second mounting box 74 is hollowed out, so that the third clamping disc 76 and the fourth clamping disc 79 can clamp the woven bag.

When the first cylinder 82 of the driving mechanism 8 extends the piston rod and makes the roller 61 enter the bag opening, and the woven bag opening supporting mechanism 5 acts, the piston rod of the second cylinder 62 extends. At the same time, the piston rod of cylinder five 711 is also extended. The piston rod of the second cylinder 62 is extended to rotate the V-shaped connecting member 63, so as to drive the roller 61 to move toward the outside of the frame body 1 and finally contact with the inner wall of the bag opening. And the extension of the piston rod of the cylinder III 75 can make the installation box II 74 descend, and when the piston rod of the cylinder III 75 extends to the longest, the clamping disc III 76 is contacted with the woven bag. After the third cylinder 75 acts in place, the double-shaft motor is started to drive the fourth clamping disc 79 to rotate, and finally the clamping disc and the third clamping disc 76 form clamping on the bag tail of the woven bag. And then, the piston rods of the third air cylinder 75 are contracted until the transmission gaps between the bag tails of the woven bags and the conveyor belt group are positioned on the same horizontal plane. At this moment, motor three 65 and motor two 73 start simultaneously, and motor three 65 orders about gyro wheel 61 and rotates to realize the upset of sack, and motor two 73 drive install bin two 74 rotates in order to realize the upset of bag tail, and the upset direction of sack and bag tail is unanimous, can realize the upset of braided bag.

In order to avoid the problem that the welding position of the inner bag and the outer bag after ultrasonic welding is not beautiful due to the fact that the inner bag and the outer bag are not attached to each other and have unevenness, a bag opening flattening mechanism 9 is arranged on one side of a connecting rod 51, and the bag opening flattening mechanism 9 is located on one side of an ultrasonic sewing mechanism 4, so that the position of a bag opening to be sewn is firstly flattened by the bag opening flattening mechanism 9 and then is welded and sewn.

Specifically, the bag mouth flattening mechanism 9 comprises a side rod 91, a first mounting seat 92, a first bolt 93 and a pressing plate 94. The side rod 91 is fixedly arranged at one side of the connecting rod 51, the mounting seat I92 is fixedly arranged at one side of the side rod 91, the bolt I93 is screwed in the mounting seat I92, and the bolt I93 penetrates through the mounting seat I92. The platen 94 is an L-shaped structure. The pressing plate 94 is provided with a through hole with a diameter larger than that of the first bolt 93, and the first bolt 93 is inserted into the through hole. The tail end of the first bolt 93 is screwed with a locknut. An elastic stretching component which enables the pressure plate 94 to be always in an inclined state is arranged between the pressure plate 94 and the side rods 91. The pressing plate 94 is inclined to the side away from the opening mechanism 3, and the position where the pressing plate 94 contacts with the woven bag and the surface of the frame body 1 have a thickness slightly larger than that of one side of the woven bag. If the sum of the wall thickness of one side of the inner bag and the wall thickness of one side of the outer bag is 0.2 mm, the distance between the pressure plate 94 and the frame body 1 can be 0.3 mm or 0.4 mm.

After the roller 61 is advanced into the pocket, the platen 94 is positioned at the seam of the pocket. When the bag turning mechanism is rotated to drive the woven bag to turn over, the pressing plate 94 flattens the seam.

In this embodiment, the elastic tension assembly includes a second mounting seat 95, a second bolt 96 and a first spring 97. The second mounting seat 95 is fixedly mounted on one side of the side rod 91, and the second mounting seat 95 is located above the pressing plate 94. The second bolt 96 is screwed into the second mounting seat 95, and the second bolt 96 penetrates through the second mounting seat 95. One end of the first spring 97 is fixedly installed at the end part of the second bolt 96, the other end of the first spring 97 is fixedly installed on the pressure plate 94, and the joint of the first spring 97 and the pressure plate 94 is located on the pressure plate 94 on the side, far away from the second mounting base 95, of the through hole.

Since the second mounting seat 95 is located above the pressure plate 94, the first spring 97 is in an inclined state after being mounted. And the joint of the first spring 97 and the pressure plate 94 is positioned on the pressure plate 94 at one side of the through hole far away from the second mounting seat 95, so that when the first spring 97 is in a stretching state, one end of the pressure plate 94 is stressed, and the pressure plate 94 is in an inclined state. The second bolt 96 is used to adjust the extension length of the first spring 97, thereby changing the force of the first spring 97 on the pressure plate 94.

The ultrasonic sewing mechanism 4 is used for sewing the bag openings of the rotating woven bags so as to sew the bag openings of the inner bag and the outer bag.

Specifically, the ultrasonic suturing mechanism 4 includes a cylinder six 41, an ultrasonic welding device 42, and a support platform 43. The cylinder six 41 is installed below the installation plate 83, the ultrasonic welding device 42 is installed at the tail end of a piston rod of the cylinder six 41 through a cross rod, and the supporting platform 43 is arranged in the sealed air pipe two 33 so as to divide the sealed air pipe two 33 into two sections.

When the first cylinder 82 of the driving mechanism 8 stops, the ultrasonic welding device 42 is located above the supporting platform 43. Then the cylinder six 41 acts to make the ultrasonic welding device 42 descend to the position where the bag mouth of the woven bag can be sewed. When the woven bag is driven to rotate by the rotary bag turning mechanism, the ultrasonic welding device 42 works simultaneously to sew the bag opening of the woven bag.

It should be noted that the ultrasonic welding device 42 and its application to sewing a pocket mouth in the present embodiment are conventional techniques, and therefore, further discussion thereof will not be provided herein.

The leveling and blanking mechanism is used for conveying the woven bags with the inner bags and the outer bags sewn and leveling the woven bags during conveying. Wherein, flattening blanking mechanism includes flattening mechanism and receiving agencies.

As shown in fig. 1, the flattening mechanism of the present embodiment is composed of eight conveyor belts 11 and a driving device 12 for driving the conveyor belts 11. The eight conveyor belts 11 are uniformly distributed and arranged in parallel up and down. The two vertically parallel conveyor belts 11 form a conveyor belt group, and the conveying directions of the conveying surfaces of the conveyor belt group, to which the two conveyor belts 11 are attached, are the same. The drive device 12 includes a reduction motor and a connecting shaft mounted on an output shaft of the reduction motor. The connecting shaft is connected to the conveyor belt 11 on the same horizontal plane to realize driving of the conveyor belt 11.

The feed ends of the conveyor belt groups on the two sides of the rack body 1 are positioned behind the feed ends of the two conveyor belt groups in the rack body 1. When translation drive division drives the bag tail rotating assembly 7 that the centre gripping has the braided bag that stitches to remove toward leveling mechanism direction, the braided bag contacts with two conveyer belt group feed ends in the support body 1 to realize that the braided bag enters into conveyer belt and organizes and carry out the flattening conveying.

Because the braided bag belongs to flexible bag, its two end angles will hang down, for the conveyer belt group that ensures that the end angle position of braided bag can enter into 1 both sides of support body, the conveyer belt of 1 both sides of support body group feed end the place ahead all is equipped with the leading-in plate 13 that the slope was arranged to the guide is braided bag end angle department and is entered into in the conveyer belt of 1 both sides of support body is organized.

Note that, in this embodiment, the feed end of the conveyor belt 11 is the front.

The specific structure and the working principle of the material receiving mechanism 14 are the prior art, and the material receiving mechanism is not improved by the invention, so that the material receiving mechanism is not discussed further herein.

The working principle of the invention is as follows:

firstly, a woven bag with a bag opening to be sewn is put into the frame body 1 through a feeding end. When the photoelectric switch 10 detects that a woven bag is placed on the frame body 1, the first motor 23 acts to drive the first rotating arm 25 and the first clamping disc 26 to rotate so as to clamp the bag tail of the woven bag. After the woven bag is clamped, the electric slide rail 21 is started. Under the driving action of the electric slide rail 21, the woven bags are conveyed to the seam rotating bag overturning mechanism.

And secondly, when the woven bag is conveyed to the rotary bag turning mechanism and the electric slide rail 21 stops moving, the cylinder four 31 moves to drive the sealing air pipe one 32 to move downwards, and the cylinder four 31 stops moving after a piston rod of the cylinder four 31 extends to the longest. The suction cup 35 will press on the woven bag at this time. And then starting a vacuum pump, and pumping air from the sealed air pipe through the vacuum pump so as to enable the two sides of the woven bag to be respectively adsorbed on the corresponding sealed air pipes. When the cylinder four 31 is reset, the upper side of the woven bag is taken up, so that the opening of the woven bag is opened.

And thirdly, after the bag opening of the woven bag is opened, starting the first air cylinder 82 to extend a piston rod of the first air cylinder, so that the bag opening rotating assembly 6 and the woven bag opening supporting mechanism 5 move towards the bag opening direction, and the bag opening rotating assembly 6 and the woven bag opening supporting mechanism 5 enter the bag opening.

And fourthly, after the first air cylinder 82 stops acting, starting an external air supply source, such as an air pump. The air pipe is supplied with air through an external air supply source. The air is blown out from the air outlet and blown to the bag opening, so that the bag opening is more uniformly opened.

And a fifth step of simultaneously starting the second air cylinder 62 and the third air cylinder 75 to extend the piston rods of the second air cylinder and the third air cylinder. The piston rod of the second cylinder 62 extends to rotate the V-shaped connecting member 63, so as to drive the roller 61 to move toward the outside of the frame body 1 and finally contact with the inner wall of the bag opening. And the extension of the piston rod of the cylinder III 75 can make the installation box II 74 descend, and when the piston rod of the cylinder III 75 extends to the longest, the clamping disc III 76 is contacted with the woven bag. After the third cylinder 75 acts in place, the double-shaft motor is started to drive the fourth clamping disc 79 to rotate, and finally the clamping disc and the third clamping disc 76 form clamping on the bag tail of the woven bag. And after the fourth 79 and the third 76 clamping discs clamp the bag tail of the woven bag, the first motor 23 reversely acts to drive the first clamping disc 26 to reset, so that the first clamping disc 26 is separated from the second clamping disc 27, and the clamping of the bag tail is released.

And then, the piston rods of the third air cylinder 75 are contracted until the transmission gaps between the bag tails of the woven bags and the conveyor belt group are positioned on the same horizontal plane. Cylinder six 41 is actuated. And after the cylinder six 41 is in place, the motor three 65, the motor two 73 and the ultrasonic welding device 42 are started simultaneously. The third motor 65 drives the roller 61 to rotate so as to realize the turning of the bag mouth, the second motor 73 drives the second mounting box 74 to rotate so as to realize the turning of the bag tail, and the turning directions of the bag mouth and the bag tail are consistent so as to realize the turning of woven bags. And in the process of overturning the woven bag, the ultrasonic welding device carries out spot welding and sewing on the inner bag and the outer bag on the periphery of the opening of the woven bag.

Sixthly, after the woven bag is turned for a circle, the process of sewing the bag opening of the woven bag is completed, the second motor 73 and the third motor 65 stop simultaneously, and the sixth cylinder 41, the second cylinder 62 and the first cylinder 82 reset in sequence to move the bag opening rotating assembly 6 and the woven bag opening supporting mechanism 5 out of the bag opening. The vacuum pump stops working.

And seventhly, actuating a cylinder fifth 711 of the translation driving part, and contracting a piston rod of the translation driving part to enable the bag tail rotating assembly 7 clamping the woven bag to move towards the leveling mechanism. When the braided bag entered into two conveyer belt groups in the support body 1, the biax motor counter-action made centre gripping dish four reset to the release is to the centre gripping of braided bag. And the piston rod of cylinder three 75 is reset after release. Next, the cylinder five 711 stops operating, and is reset. The contraction speed of the piston rod of the cylinder five 711 is preferably consistent with the conveying speed of the conveying belts 11, and the distance between two adjacent conveying belts 11 on the left and right is larger than the diameter of the clamping disc four 79.

The braided bag is at the in-process of leveling mechanism conveying, extrudees the conveying of braided bag through the conveying belt group, can be with the gas outgoing in the bag, realizes the flattening to the braided bag.

The braided bag will enter into receiving agencies 14 after the conveying of leveling mechanism comes out, realizes the collection to the braided bag through receiving agencies.

In the working principle of the suturing device, the control of the motor, the air cylinder and the electric slide rail 21 is completed by a PLC. Although the present invention improves the structure of the sewing device, the control process is consistent with that of the woven bag sewing mechanism in the prior art, and the present invention does not improve the control process.

In the present invention, the fixing device may adopt any fixing connection means known at present, such as bolt connection, welding, etc. The fixed mounting in this embodiment is preferably achieved by welding.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that those skilled in the art can make various changes and modifications without departing from the structure of the invention, which will not affect the effect of the invention and the practicability of the patent.

Claims (10)

1. A sewing device for inner and outer bags of a woven bag comprises a frame body (1) provided with a conveying mechanism (2), an opening mechanism (3), an ultrasonic sewing mechanism (4) and a leveling blanking mechanism, and is characterized by further comprising a rotary bag turning mechanism and a woven bag opening mechanism (5) matched with the opening mechanism (3) for use; the rotary bag turning mechanism consists of a bag opening rotating assembly (6) and a bag tail rotating assembly (7); sack rotating assembly (6) are movably installed on support body (1) of opening mechanism (3) one side through actuating mechanism (8), the braided bag props a mouthful mechanism (5) and installs on actuating mechanism (8), so that the braided bag props a mouthful mechanism (5) and can alternate in opening mechanism (3).

2. A sewing device for inner and outer bags of a woven bag according to claim 1, wherein the woven bag mouth-stretching means (5) comprises a connecting rod (51), an upper air tube (52) and a lower air tube (53); the connecting rod (51) is fixedly arranged on the driving mechanism (8), and the connecting rod (51) extends to one side of the bag opening rotating assembly (6) close to the opening mechanism (3); the upper air pipe (52) and the lower air pipe (53) are fixedly arranged at the tail end of the connecting rod (51), one side of the upper air pipe (52) far away from the lower air pipe (53) is provided with a plurality of upper air outlet holes (54), and one side of the lower air pipe (53) far away from the upper air pipe (52) is provided with a plurality of lower air outlet holes; the upper air pipe (52) and the lower air pipe (53) are both connected with an external air supply source.

3. A seaming apparatus for inner and outer woven bags according to claim 2, wherein a bag mouth flattening mechanism (9) is mounted to one side of the connecting bar (51).

4. A seaming apparatus for inner and outer woven bags according to claim 3, wherein the bag mouth flattening mechanism (9) comprises a side bar (91), a first mounting seat (92), a first bolt (93) and a pressure plate (94); the side rod (91) is fixedly arranged on one side of the connecting rod (51), the first mounting seat (92) is fixedly arranged on one side of the side rod (91), the first bolt (93) is screwed in the first mounting seat (92), and the first bolt (93) penetrates through the first mounting seat (92); a through hole with the diameter larger than that of the first bolt (93) is formed in the pressing plate (94), and the first bolt (93) is inserted into the through hole; the tail end of the first bolt (93) is screwed with a locknut; an elastic stretching assembly which enables the pressing plate (94) to be always in an inclined state is arranged between the pressing plate (94) and the side rods (91).

5. A seaming apparatus for woven inner and outer bags according to claim 4, wherein the elastic tension member comprises a second mounting seat (95), a second bolt (96) and a first spring (97); the second mounting seat (95) is fixedly mounted on one side of the side rod (91), the second bolt (96) is screwed in the second mounting seat (95), and the second bolt (96) penetrates through the second mounting seat (95); one end of the first spring (97) is fixedly installed at the end part of the second bolt (96), the other end of the first spring (97) is fixedly installed on the pressing plate (94), and the joint of the first spring (97) and the pressing plate (94) is located on the pressing plate (94) on one side, away from the second mounting seat (95), of the through hole.

6. A seaming apparatus for inner and outer woven bags according to claim 2, wherein the driving mechanism (8) comprises a first bracket (81), a first air cylinder (82), a mounting plate (83) and two first sliding bars (84); the support I (81) is fixedly arranged on the frame body (1), the two sliding rods I (84) are fixedly arranged above the support I (81), and the mounting plate (83) is provided with two through holes which are in one-to-one corresponding sliding connection with the two sliding rods I (84); the first air cylinder (82) is fixedly installed on the first support (81), and the piston end of the first air cylinder (82) is fixedly installed on the installation plate (83).

7. A seaming apparatus for inner and outer pockets of a woven bag according to claim 6, wherein the pocket mouth rotation assembly (6) comprises two rollers (61) and a rotation driving portion for driving the two rollers (61) to rotate synchronously and in the same direction, a hinge driving portion for driving the rollers (61) to move toward the outer side of the frame body (1);

the bag tail rotating assembly (7) comprises a lifting driving part and a translation driving part, wherein the lifting driving part is used for lifting the bag tail of the woven bag from the conveying mechanism (2), and the translation driving part is used for driving the lifting driving part to move back and forth along the conveying direction.

8. A seaming apparatus for inner and outer woven bags according to claim 7, wherein the hinge driving part comprises a second cylinder (62), a V-shaped connector (63) and a strut (64); the supporting rod (64) is fixedly arranged on one side of the mounting plate (83), and the second air cylinder (62) is rotatably arranged between the supporting rod (64) and the mounting plate (83); the lower extreme in branch (64) is installed in the rotation of the V type corner of V type connecting piece (63), the one end of V type connecting piece (63) is connected with the piston end rotation of two (62) of cylinder, the other end rotation of V type connecting piece (63) installs the pivot, the pivot is close to the one end fixed mounting that the braided bag propped a mouthful mechanism (5) and has gyro wheel (61), the other end of pivot is connected with the drive end that rotates the drive division.

9. A suturing device for inner and outer woven bags according to claim 7, wherein the lifting driving part comprises an upper support plate (71), a lower support plate (72), a second motor (73) and a second installation box (74); the upper supporting plate (71) is fixedly arranged at the driving end of the translation driving part, a third cylinder (75) is arranged below the upper supporting plate (71), and the lower supporting plate (72) is fixedly arranged at the piston end of the third cylinder (75); the second motor (73) is fixedly arranged below the lower supporting plate (72), and the second mounting box (74) is fixedly connected with an output shaft of the second motor (73); a clamping disc III (76) is mounted on two sides of the mounting box II (74) through elastic components, a rotary disc II (77) is arranged on the mounting box II (74) on one side of the clamping disc III (76), a double-shaft motor is mounted in the mounting box II (74), and two shaft ends of the double-shaft motor are fixedly connected with the two rotary discs II (77) in a one-to-one correspondence manner; and a second rotating arm (78) is fixedly arranged on the circumferential surface of the second rotating disk (77), and a fourth clamping disk (79) which can be in contact with the third clamping disk (76) is fixedly arranged at the tail end of the second rotating arm (78).

10. The sewing device for inner and outer woven bags according to claim 1, characterized in that the conveying mechanism (2) comprises two electric slide rails (21) symmetrically installed below the frame body (1), a first installation box (22) installed on a slide block of the electric slide rails (21), a first motor (23), a first rotating disc (24), a first rotating arm (25), a first clamping disc (26) and a second clamping disc (27); the first mounting box (22) is fixedly mounted on the sliding block, the first motor (23) is fixedly mounted on one side of the first mounting box (22), and an output shaft of the first motor (23) penetrates through the first mounting box (22) and extends into the first mounting box (22); the first rotating disc (24) is fixedly arranged on an output shaft of the first motor (23), the first rotating arm (25) is fixedly arranged on one side of the first rotating disc (24), the first clamping disc (26) is fixedly arranged at the tail end of the first rotating arm (25), and the first mounting box (22) is fixedly provided with a second clamping disc (27) which can be in contact with the first clamping disc (26); the rack body (1) above the electric slide rail (21) is provided with a long slot hole (28), the second clamping disk (27) is positioned in the long slot hole (28), and the top end face of the second clamping disk (27) is flush with the top end face of the rack body (1).

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