CN113138428A - Plastic woven bag upper and lower bottom edge folding detection and picking device - Google Patents
Plastic woven bag upper and lower bottom edge folding detection and picking device Download PDFInfo
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- CN113138428A CN113138428A CN202110441599.2A CN202110441599A CN113138428A CN 113138428 A CN113138428 A CN 113138428A CN 202110441599 A CN202110441599 A CN 202110441599A CN 113138428 A CN113138428 A CN 113138428A
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- 229920003023 plastic Polymers 0.000 title claims abstract description 216
- 239000004033 plastic Substances 0.000 title claims abstract description 216
- 238000001514 detection method Methods 0.000 title claims abstract description 75
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000008859 change Effects 0.000 claims abstract description 4
- 238000000926 separation method Methods 0.000 claims description 27
- 230000006835 compression Effects 0.000 claims description 19
- 238000007906 compression Methods 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 14
- 238000004891 communication Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 17
- 230000009471 action Effects 0.000 abstract description 11
- 238000003708 edge detection Methods 0.000 abstract description 11
- 230000008569 process Effects 0.000 abstract description 10
- 238000007689 inspection Methods 0.000 abstract description 7
- 230000003068 static effect Effects 0.000 description 14
- 238000006073 displacement reaction Methods 0.000 description 5
- 230000005484 gravity Effects 0.000 description 5
- 238000003825 pressing Methods 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 238000000465 moulding Methods 0.000 description 4
- 238000007789 sealing Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000005452 bending Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229920013716 polyethylene resin Polymers 0.000 description 1
- -1 polypropylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/02—Measures preceding sorting, e.g. arranging articles in a stream orientating
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B07—SEPARATING SOLIDS FROM SOLIDS; SORTING
- B07C—POSTAL SORTING; SORTING INDIVIDUAL ARTICLES, OR BULK MATERIAL FIT TO BE SORTED PIECE-MEAL, e.g. BY PICKING
- B07C5/00—Sorting according to a characteristic or feature of the articles or material being sorted, e.g. by control effected by devices which detect or measure such characteristic or feature; Sorting by manually actuated devices, e.g. switches
- B07C5/34—Sorting according to other particular properties
- B07C5/3404—Sorting according to other particular properties according to properties of containers or receptacles, e.g. rigidity, leaks, fill-level
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- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- General Physics & Mathematics (AREA)
- Geophysics (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
Abstract
The invention relates to the technical field of plastic woven bags, in particular to a device for detecting and picking up upper and lower bottom hems of a plastic woven bag, which comprises a main frame, a forming frame and a controller; the main frame is provided with a detection electric eye in the area of the forming frame and the conveying belt, and the detection electric eye judges the light path change of the detection area through a built-in photoelectric sensor; the plastic woven bag has the advantages that due to the edge folding action of the upper bottom of the plastic woven bag and the lower bottom of the plastic woven bag, an ineffective and upright state can be generated in the processing process, so that the plastic woven bag is incomplete when being placed and heat-sealed, and the plastic woven bag is easy to miss inspection during manual inspection, so that a finished product contains the plastic woven bag with quality problems, and further, hidden troubles are left when the plastic woven bag is used; therefore, the invention detects whether the folded edge of the plastic woven bag is effectively folded and erected to be right-angled through the arranged photoelectric sensor, realizes the function of automatically detecting and rejecting unqualified products, converts manual detection into mechanical and electrical equipment to complete detection, reduces the omission ratio, improves the product quality, and further realizes the operation effect of the plastic woven bag upper and lower bottom folded edge detection and rejection device.
Description
Technical Field
The invention relates to the technical field of plastic woven bags, in particular to a device for detecting and removing upper and lower bottom folded edges of a plastic woven bag.
Background
The plastic woven bag is a product designed mainly from polypropylene and polyethylene resin, resin raw materials of the plastic woven bag in the production process are extruded and stretched into flat filaments, and then the flat filaments are woven and folded to seal and form the plastic woven bag.
At present, the production of plastic woven bags solves the problem that the upper and lower bottom folding edges of the plastic woven bags cannot be effectively folded into a right angle, so that the heat sealing of the overlapping position is incomplete, the condition of easy leak detection during manual inspection is changed into mechanical and electrical appliance completion detection through manual detection, the leak detection rate is reduced, and the product quality is improved.
The plastic woven bag edge folding shaping machine comprises a clamping base, a working electric sliding block, a displacement frame, a synchronizing device, two positioning clamps, a portal frame, a driving air cylinder, a pressing device and a hot stamping device, wherein the working electric sliding block is arranged on the clamping base, the displacement frame is arranged on the working electric sliding block, the synchronizing device is arranged in the middle of the displacement frame, the two positioning clamps are arranged at the left end and the right end of the synchronizing device, the hot stamping device is arranged in the middle of the displacement frame, the portal frame is arranged on the displacement frame, and the upper end of the portal frame is connected with the pressing device through the driving air cylinder; the technical scheme solves the problems that the conventional edge folding machine usually adopts rigid pressing to the woven cloth, the woven cloth is repeatedly pressed by two pressing dies, but the woven cloth is a flexible fabric, so clear creases can be formed only by repeated pressing, the edge folding shaping effect is poor, and the like; but this technical scheme does not solve because of last lower hem of plastic woven bag can not effectively be rolled over and found right-angle form, leads to taking the position heat-seal incomplete, and the problem of leaking the inspection easily during manual inspection.
In view of this, the invention provides a device for detecting and picking up upper and lower bottom hems of a plastic woven bag, which solves the technical problems.
Disclosure of Invention
In order to make up for the defects of the prior art, the invention provides the upper and lower bottom folding edge detection and rejection device for the plastic woven bag, which is used for detecting whether the folding edge of the plastic woven bag is effectively folded and erected into a right-angle shape through the arranged photoelectric sensor, realizing the function of automatically detecting and rejecting unqualified products, converting manual detection into mechanical and electrical equipment to complete detection, reducing the omission ratio and improving the product quality, thereby realizing the operation effect of the upper and lower bottom folding edge detection and rejection device for the plastic woven bag.
The invention relates to a plastic woven bag upper and lower bottom edge folding detection and rejection device, which comprises a main frame, a forming frame and a controller; forming frames are arranged on two sides of the main frame, and a conveying belt is arranged between the forming frames of the main frame; the main frame is provided with a compression roller belt, the compression roller belt is respectively positioned above two sides of the conveying belt and is parallel to the advancing direction of the conveying belt, the compression roller belt enables the plastic woven bag to be attached to the conveying belt, and the compression roller belt and the conveying belt keep the same running state; the conveying belt enables the upper bottom end and the lower bottom end of the conveyed plastic woven bag to be located on two sides of the conveying belt, the conveying belt conveys the edge-folded plastic woven bag to the area of the forming frame, and the upper end and the lower end of the plastic woven bag are respectively located on the forming frame on two sides of the conveying belt; the main frame is provided with a detection electric eye in the areas of the forming frame and the conveyor belt, the detection electric eye is slidably arranged on a slide rail of the main frame, and the detection electric eye judges the light path change of a detection area through a built-in photoelectric sensor; the main frame is also provided with a truss at the tail end in the advancing direction of the conveyor belt, a seat plate is also arranged on the end face, facing the conveyor belt, of the truss in a sliding manner, and a driving motor is arranged on the seat plate; an electric sucker is arranged below the seat plate, and a lifting rod is fixedly connected between the seat plate and the electric sucker; the electric sucker is separated from the conveying belt by adsorbing the plastic woven bag; the controller is used for adjusting the operation of the main frame, and data communication is carried out between the controller and the detection electric eye through a shielding cable;
in the prior art, the plastic woven bag has incomplete overlapping and heat sealing due to the fact that the plastic woven bag is not effectively and vertically folded in the processing process due to the edge folding action of the upper bottom and the lower bottom of the plastic woven bag, and the plastic woven bag is easy to miss detection in manual inspection, so that a finished product contains plastic woven bags with quality problems, and further hidden dangers are left when the plastic woven bag is used;
therefore, the invention detects the state that the upper and lower bottom folding edges of the plastic woven bag on the main frame are in a right angle through the arranged detection electric eye, the plastic woven bag on the conveying belt is positioned by the compression roller belt, then conveyed to the area of the forming frame by the conveying belt after being folded, the position of the detection electric eye on the sliding rail is manually adjusted to ensure that the position of the detection electric eye is matched with the width size of the plastic woven bag, when the detection electric eye above the conveying belt detects that the plastic woven bag is conveyed to the position of the forming frame, a detection signal is sent to the controller through the shielding cable, the detection electric eye above the forming frame is operated according to a set instruction, when the upper and lower bottom forming folding edges of the plastic woven bag are effectively erected in a right angle shape, the detection electric eye in the area of the forming frame is blocked, the information transmitted to the controller indicates that the conveyed bag is a qualified bag, and then the plastic woven bag is conveyed to the next procedure through the conveying belt, if one of the detection electric eyes detects that the bag is not effectively shielded, the bag is judged to be unqualified and then a command of rejecting unqualified products is executed, at the moment, the controller drives the seat plate to move to the upper part of the conveyor belt along the truss through the motor, then the lifting rod is controlled to descend to enable the electric sucker to adsorb the plastic woven bag, then the seat plate is driven to be separated from the area of the conveyor belt along the truss through the motor, the unqualified products of the plastic woven bag are rejected, and the folding edge quality of the plastic woven bag conveyed on the conveyor belt is maintained; the invention utilizes the arranged photoelectric sensor to detect whether the edge of the plastic woven bag is effectively folded and erected to be right-angled, realizes the function of automatically detecting and rejecting unqualified products, converts manual detection into mechanical and electrical equipment to complete detection, reduces the omission ratio, improves the product quality, and further realizes the operation effect of the upper and lower bottom edge folding detection and rejection device of the plastic woven bag.
Preferably, a rotary swing rod is further arranged on the main rack and located between the roller belt and the forming frame, a blocking piece is fixedly connected between the bottoms of the swing rods and is perpendicular to the advancing direction of the conveying belt; the separation blades protrude out of the two sides of the conveying belt, the length of each separation blade is smaller than that of the plastic woven bag on the conveying belt after being folded, and the bottom ends of the separation blades are in sliding contact with the surface of the conveying belt; when the plastic woven bag folding machine works, after the folding of the plastic woven bag with smaller weight is finished, the upper and lower bottoms of the plastic woven bag are easy to be out of synchronization, so that the plastic woven bag is in an inclined state on a conveying belt; the swing rods are arranged between the press roller belt and the forming frame, the separation blades fixedly connected between the swing rods are overlapped on the conveying belt, after the plastic woven bag inclined on the conveying belt is contacted with a certain position on the separation blades, the plastic woven bag is deflected on the conveying belt under the weight of the swing rods and the separation blades, when the plastic woven bag in the deflection process is righted to be in contact with the separation blades in a fit manner, the static friction force between the plastic woven bag and the conveying belt overcomes the gravity of the separation blades, the swing rods deflect, then the plastic woven bag on the conveying belt enters the forming frame area through the separation blades in a righting posture, the detection electric eyes of the forming frame area are positioned at two ends of the width size of the plastic woven bag, the condition that the plastic woven bag after edge folding is in an inclined posture on the conveying belt and the light path of the detection electric eyes of the forming frame area is not shielded is avoided, and the detection accuracy of the detection electric eyes on the upper bottom edge and the lower edge of the plastic woven bag is improved, thereby improving the operation effect of the plastic woven bag upper and lower bottom folding edge detection and removal device.
Preferably, a straight rod is fixedly connected between the top ends of the swing rods, a shaft rod is rotatably mounted in the middle of the straight rod, and the shaft rod is perpendicular to the plane of the conveying belt; the straight rod is rotatably installed on the main frame through a shaft lever, a torsion spring fixedly connected is further arranged between the straight rod and the main frame, and the torsion spring and the shaft lever have the same axle center; when the plastic woven bag bending machine works, when a plastic woven bag inclined on a conveying belt contacts with a baffle, the baffle deflects along with the plastic woven bag by a connecting rod arranged between swing rods and a rotating shaft rod on a main frame, the baffle is prevented from causing wrinkles of the plastic woven bag to interfere with the righting of the plastic woven bag when the static friction force between the plastic woven bag and the conveying belt is not overcome at the moment that the baffle in a fixed posture contacts with the edge of the plastic woven bag in an inclined posture, a torsional spring arranged between a straight rod and a main frame drives the torsional spring between the straight rod and the main frame to generate torsion by the baffle and the swing rods when the acting force generated at the moment that the baffle contacts with the plastic woven bag is smaller than the static friction force on the conveying belt, the torsional force generated by the torsional spring is transmitted to the baffle, so that when the inclined plastic woven bag bears the gradually increased acting force on the baffle, a moving space still exists on the conveying belt, and the shape of the plastic woven bag on the conveying belt is further maintained, thereby maintaining the operation effect of the plastic woven bag upper and lower bottom folding edge detection and removal device.
Preferably, an annular cambered surface is further arranged on the shaft rod, and the shaft rod is in contact fit with the annular cambered surface; the cambered surface increases the length of the shaft lever when the shaft lever rotates, so that the straight rod on the shaft lever drives the baffle plate to move downwards; when the plastic woven bag lifting mechanism works, the plastic woven bag in the inclined posture on the conveyor belt is in contact with the blocking piece at the moment; through setting up annular cambered surface on the axostylus axostyle, make the deflection of separation blade transmit on the axostylus axostyle at straight-bar middle part, and then drive the axostylus axostyle and rotate along its annular cambered surface, the axostylus axostyle makes the separation blade of deflection increase the pressure to the conveyer belt under the effect of its annular cambered surface, and the axostylus axostyle of increase length has increased the length of torsional spring equally, and then the torsional force of torsional spring has been strengthened, and cooperate with the pressure that the separation blade increased on the conveyer belt on the surface, separation blade is to the effort of moulding the braided bag under the state of having increased deflection, it is convenient for to reform transform into exact gesture to make the bag of moulding on the conveyer belt, ensure to detect the actual hem condition of the measuring light path feedback out of moulding the braided bag, thereby the operation effect that the lower hem detected the picking device about moulding the braided bag has been promoted.
Preferably, the surface of the conveyor belt is also provided with spherical bulges which are arranged intermittently, and the spherical bulges are positioned in the middle of the conveyor belt; the spherical bulges enable the plastic woven bags on the conveyor belt to be in a state of bulging in the middle; when the plastic woven bag straightening machine works, the plastic woven bag inclined on the conveying belt needs to be deflected and returned to the correct position and the resistance between the plastic woven bag and the conveying belt in the straightening process under the action of the blocking piece; through the spherical bulge arranged in the middle of the conveyor belt, the inclined plastic woven bag takes the spherical bulge contact as a rotating shaft when being straightened, the static friction of the plastic woven bag straightened on the conveyor belt is changed into the rotating friction, then the inclined posture of the plastic woven bag is convenient to be straightened, and when the plastic woven bag is straightened and is attached to a separation blade, the static friction between the plastic woven bag and the spherical bulge overcomes the gravity of the separation blade to deflect the swing rod, the conveyor belt continues to transport the plastic woven bag, and therefore the operation effect of the upper bottom edge folding and the lower bottom edge folding detection and removal device of the plastic woven bag is maintained.
Preferably, air grooves are further formed in the two sides of the conveying belt and are located in the area between the blocking piece and the compression roller belt; the air groove enables the air flow generated by the air pump to be obliquely blown to the blocking piece along the surface of the conveyor belt; during operation, air current is formed on the surface of the conveying belt through the arranged air grooves, then the plastic woven bag is suspended under the action of the air current on the surface of the conveying belt, the friction force between the plastic woven bag and the conveying belt is reduced, the inclined posture of the plastic woven bag is convenient to restore, the deflection force applied to the swing rod is increased by the air current blown to the separation blade in an inclined mode, after the plastic woven bag is in contact with the separation blade in the suspended state under the action of the air current, the separation blade can be jacked up only by means of the static friction force of the spherical bulge in the middle of the conveying belt, the smoothness of the plastic woven bag moving on the surface of the conveying belt is ensured, and therefore the operation effect of the upper bottom folding edge detection and picking-out device of the plastic woven bag is promoted.
The invention has the following beneficial effects:
1. the invention detects whether the folded edge of the plastic woven bag is effectively folded and erected to be right-angled through the photoelectric sensor, realizes the function of automatically detecting and rejecting unqualified products, converts manual detection into mechanical and electrical equipment to complete detection, reduces the omission ratio and improves the product quality.
2. According to the invention, the swing rods are arranged between the press roller belt and the forming frame, the separation blades fixedly connected between the swing rods are overlapped on the conveying belt, the plastic woven bag is deflected on the conveying belt under the weight of the swing rods and the separation blades, when the plastic woven bag in the deflection process is returned to be in contact with the separation blades in a fit manner, the condition that the light path of the detection electric eye is not shielded due to the fact that the plastic woven bag with the folded edge is in an inclined posture on the conveying belt is avoided, and the accuracy of the detection electric eye for the upper bottom folded edge and the lower bottom folded edge of the plastic woven bag is improved.
3. According to the invention, the spherical bulge is arranged in the middle of the conveyor belt, so that the contact of the spherical bulge is used as a rotating shaft when the inclined plastic woven bag is righted, and the air flow is formed on the surface of the conveyor belt by matching with the arranged air groove, so that the friction force between the plastic woven bag and the conveyor belt is reduced, the inclined posture of the plastic woven bag is conveniently righted, and the smoothness of the movement of the plastic woven bag on the surface of the conveyor belt is ensured.
Drawings
The invention is further described with reference to the following figures and embodiments.
FIG. 1 is a perspective view of the upper and lower bottom folding edge detecting and removing device for the plastic woven bag of the present invention;
FIG. 2 is an enlarged view of the rocker portion of FIG. 1;
FIG. 3 is a top view of the detecting electric eye portion of the present invention;
FIG. 4 is an enlarged view of a portion of FIG. 2 at A;
in the figure: the device comprises a main frame 1, a slide rail 11, a forming frame 2, a conveying belt 3, a spherical bulge 31, an air duct 32, a press roller belt 4, a detection electric eye 5, a truss 6, a seat plate 61, a motor 611, an electric suction cup 62, a lifting rod 63, a swing rod 7, a baffle 71, a straight rod 72, a torsion spring 721, a shaft rod 73 and an arc surface 731.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
As shown in fig. 1 to 4, the device for detecting and removing the upper and lower bottom folding edges of the plastic woven bag comprises a main frame 1, a forming frame 2 and a controller; forming frames 2 are arranged on two sides of the main frame 1, and a conveyor belt 3 is arranged between the forming frames 2 of the main frame 1; the main frame 1 is provided with a compression roller belt 4, the compression roller belt 4 is respectively positioned above two sides of the conveyor belt 3 and is parallel to the advancing direction of the conveyor belt, the compression roller belt 4 enables the plastic woven bag to be attached to the conveyor belt 3, and the compression roller belt 4 and the conveyor belt 3 keep the same running state; the conveying belt 3 enables the upper bottom end and the lower bottom end of the conveyed plastic woven bag to be positioned on two sides of the conveying belt, the conveying belt 3 conveys the edge-folded plastic woven bag to the area of the forming frame 2, and the upper end and the lower end of the plastic woven bag are respectively positioned on the forming frame 2 on two sides of the conveying belt 3; the main frame 1 is provided with a detection electric eye 5 in the area of the forming frame 2 and the conveyor belt 3, the detection electric eye 5 is slidably mounted on a slide rail 11 of the main frame 1, and the detection electric eye 5 judges the light path change of a detection area through a built-in photoelectric sensor; the tail end of the main frame 1 in the advancing direction of the conveyor belt 3 is also provided with a truss 6, a seat plate 61 is further mounted on the end face, facing the conveyor belt 3, of the truss 6 in a sliding manner, and a driving motor 611 is arranged on the seat plate 61; an electric suction cup 62 is arranged below the seat plate 61, and a lifting rod 63 is fixedly connected between the seat plate 61 and the electric suction cup 62; the electric suction disc 62 is separated from the conveyor belt 3 by adsorbing the plastic woven bag; the controller is used for adjusting the operation of the main frame 1, and data communication is carried out between the controller and the detection electric eye 5 through a shielded cable;
in the prior art, the plastic woven bag has incomplete overlapping and heat sealing due to the fact that the plastic woven bag is not effectively and vertically folded in the processing process due to the edge folding action of the upper bottom and the lower bottom of the plastic woven bag, and the plastic woven bag is easy to miss detection in manual inspection, so that a finished product contains plastic woven bags with quality problems, and further hidden dangers are left when the plastic woven bag is used;
therefore, the invention detects the state that the upper and lower bottom folding edges of the plastic woven bag on the main frame 1 are in a right angle through the arranged detection electric eye 5, after the plastic woven bag on the conveying belt 3 is positioned by the press roll belt 4 and is conveyed to the area of the forming frame 2 by the conveying belt 3 after being folded, manually adjusts the position of the detection electric eye 5 on the slide rail 11 to ensure that the position of the detection electric eye 5 is matched with the width size of the plastic woven bag, when the detection electric eye 5 above the conveying belt 3 detects the position of the plastic woven bag conveyed to the forming frame 2, a detection signal is sent to the controller through the shielded cable, and the detection electric eye 5 above the forming frame 2 is operated according to a set instruction, when the upper and lower bottom forming folding edges of the plastic woven bag are in an effective and straight right angle shape, the detection electric eye 5 in the area of the forming frame 2 is blocked, the information sent to the controller indicates that the conveyed bag is a qualified bag, conveying the plastic woven bags to the next procedure through the conveyor belt 3, judging the plastic woven bags to be unqualified if one detection electric eye 5 detects that the plastic woven bags are not effectively shielded, and then executing a command of picking out unqualified products, wherein the controller drives the seat plate 61 to move to the upper part of the conveyor belt 3 along the truss 6 through the motor 611 at the moment, then controls the lifting rod 63 to descend to enable the electric suction cup 62 to adsorb the plastic woven bags, then drives the seat plate 61 to be separated from the area of the conveyor belt 3 along the truss 6 through the motor 611, and then picks out the unqualified products of the plastic woven bags, so that the edge folding quality of the plastic woven bags conveyed on the conveyor belt 3 is maintained; the invention utilizes the arranged photoelectric sensor to detect whether the edge of the plastic woven bag is effectively folded and erected to be right-angled, realizes the function of automatically detecting and rejecting unqualified products, converts manual detection into mechanical and electrical equipment to complete detection, reduces the omission ratio, improves the product quality, and further realizes the operation effect of the upper and lower bottom edge folding detection and rejection device of the plastic woven bag.
As an embodiment of the invention, a rotary swing rod 7 is further arranged on the main frame 1, the swing rod 7 is positioned between the compression roller belt 4 and the forming frame 2, a baffle 71 is fixedly connected between the bottoms of the swing rods 7, and the baffle 71 is perpendicular to the advancing direction of the conveyor belt 3; the separation blade 71 protrudes out of the two sides of the conveyor belt 3, the length of the separation blade 71 is smaller than that of the plastic woven bag on the conveyor belt 3 after being folded, and the bottom end of the separation blade 71 is in sliding contact with the surface of the conveyor belt 3; when the plastic woven bag folding machine works, after the folding of the plastic woven bag with smaller weight is finished, the upper and lower bottoms of the plastic woven bag are easy to be out of synchronization, so that the plastic woven bag is in an inclined state on the conveyor belt 3; the swing rod 7 arranged between the press roll belt 4 and the forming frame 2 is used, the baffle piece 71 fixedly connected between the swing rods 7 is attached to the conveyor belt 3 in an overlapping mode, after a plastic woven bag inclined on the conveyor belt 3 is contacted with a certain position on the baffle piece 71, the plastic woven bag generates deflection on the conveyor belt 3 under the weight of the swing rods 7 and the baffle piece 71, when the plastic woven bag in the deflection process is righted to be in contact with the baffle piece 71 in an attaching mode, the static friction force between the plastic woven bag and the conveyor belt 3 overcomes the gravity of the baffle piece 71, the swing rods 7 deflect, the plastic woven bag on the conveyor belt 3 enters the forming frame 2 area through the baffle piece 71 in a righting mode, the detecting electric eyes 5 in the forming frame 2 area are located at two ends of the width dimension of the plastic woven bag, the situation that the folded plastic woven bag is in an inclined mode on the conveyor belt 3 to cause that the light path of the detecting electric eyes 5 in the forming frame 2 area is not shielded is avoided, the accuracy of the detection of the electric eye 5 on the upper and lower bottom hems of the plastic woven bag is increased, so that the operation effect of the upper and lower bottom hems detection and rejection device of the plastic woven bag is improved.
As an embodiment of the invention, a straight rod 72 is further fixedly connected between the top ends of the swing rods 7, a shaft rod 73 is rotatably mounted in the middle of the straight rod 72, and the shaft rod 73 is perpendicular to the plane of the conveyor belt 3; the straight rod 72 is rotatably mounted on the main frame 1 through a shaft rod 73, a torsion spring 721 fixedly connected is further arranged between the straight rod 72 and the main frame 1, and the torsion spring 721 and the shaft rod 73 are coaxial; when the plastic woven bag tilting on the conveyor belt 3 contacts the baffle plate 71, the baffle plate 71 deflects along with the plastic woven bag by the connecting rod arranged between the swing rods 7 and the rotating shaft rod 73 on the main frame 1 when the baffle plate 71 in the fixed posture contacts with the edge of the plastic woven bag in the tilting posture, the static friction force between the plastic woven bag and the conveyor belt 3 is not overcome at the moment of the contact of the baffle plate 71 in the fixed posture, the plastic woven bag is prevented from being folded to interfere the recovery of the plastic woven bag, the torsion spring 721 arranged between the straight rod 72 and the main frame 1 drives the torsion spring 721 between the straight rod 72 and the main frame 1 to generate torsion through the baffle plate 71 and the swing rods 7 when the acting force generated at the moment of the contact of the baffle plate 71 with the plastic woven bag is smaller than the static friction force on the conveyor belt 3, the torsion force generated by the torsion spring 721 is transmitted to the baffle plate 71, so that the tilting plastic woven bag still has a moving space on the conveyor belt 3 when bearing the gradually increased acting force on the baffle plate 71, thereby maintaining the shape of the plastic woven bag on the conveyor belt 3 and further maintaining the operation effect of the upper and lower bottom folding edge detection and removal device of the plastic woven bag.
As an embodiment of the present invention, an annular arc 731 is further disposed on the shaft rod 73, and the shaft rod 73 is in contact with the annular arc 731; the arc surface 731 increases the length of the shaft rod 73 during rotation, so that the straight rod 72 on the shaft rod 73 drives the blocking piece 71 to move downwards; when the plastic woven bag lifting mechanism works, the plastic woven bag in the inclined posture on the conveyor belt 3 is in contact with the blocking piece 71 at the moment; through the annular arc 731 arranged on the shaft rod 73, the deflection of the baffle plate 71 is transmitted to the shaft rod 73 in the middle of the straight rod 72, and then the shaft rod 73 is driven to rotate along the annular arc 731, the deflected baffle plate 71 increases the pressure on the conveying belt 3 under the action of the annular arc 731 of the shaft rod 73, the length of the torsion spring 721 is increased by the shaft rod 73 with the increased length, the torsion force of the torsion spring 721 is further enhanced, and is matched with the pressure of the baffle plate 71 on the surface of the conveying belt 3, the acting force of the baffle plate 71 on the plastic woven bag in the deflection state is increased, so that the plastic woven bag on the conveying belt 3 is convenient to return to a correct posture, the actual folding condition of the plastic woven bag is fed back by a measuring light path of the detection electric eye 5, and the operation effect of the upper and lower bottom folding edge detection and rejection device of the plastic woven bag is improved.
As an embodiment of the present invention, the surface of the conveyor belt 3 is further provided with intermittently arranged spherical protrusions 31, and the spherical protrusions 31 are located in the middle of the conveyor belt 3; the spherical bulge 31 enables the plastic woven bag on the conveyor belt 3 to be in a state that the middle part is raised; when the plastic woven bag straightening machine works, the plastic woven bag inclined on the conveyor belt 3 needs to be subjected to resistance between the plastic woven bag and the conveyor belt 3 when the plastic woven bag deflects and returns in the straightening process under the action of the baffle plate 71; through the spherical bulge 31 arranged in the middle of the conveyor belt 3, the contact of the spherical bulge 31 is used as a rotating shaft when the inclined plastic woven bag is righted, the static friction of the righted plastic woven bag on the conveyor belt 3 is changed into the rotating friction, then the inclined posture of the plastic woven bag is righted conveniently, and when the plastic woven bag is righted and is in contact with the blocking piece 71 in a fit manner, the static friction between the plastic woven bag and the spherical bulge 31 overcomes the gravity of the blocking piece 71 to deflect the swing rod 7, the conveyor belt 3 continues to transport the plastic woven bag, and therefore the operation effect of the upper bottom edge folding edge detection and removal device and the lower bottom edge folding edge detection and removal device of the plastic woven bag is maintained.
As an embodiment of the present invention, the two sides of the conveyor belt 3 are further provided with air ducts 32, and the air ducts 32 are located in the area between the blocking sheet 71 and the press roll belt 4; the air duct 32 enables the air flow generated by the air pump to be obliquely blown to the baffle 71 along the surface of the conveyor belt 3; during operation, air flow is formed on the surface of the conveying belt 3 through the arranged air grooves 32, then the plastic woven bag is suspended under the action of the air flow on the surface of the conveying belt 3, so that the friction force between the plastic woven bag and the conveying belt 3 is reduced, the inclined posture of the plastic woven bag is convenient to return, the deflection force applied to the swing rod 7 is increased by the air flow obliquely blown to the baffle 71, after the plastic woven bag contacts the baffle 71 in the suspension state under the action of the air flow, the baffle 71 can be jacked up only by the static friction force of the spherical bulge 31 in the middle of the conveying belt 3, the smoothness of the plastic woven bag moving on the surface of the conveying belt 3 is ensured, and the operation effect of the upper bottom folding edge and the lower bottom folding edge detection and removal device of the plastic woven bag is promoted.
The specific working process is as follows:
the upper and lower bottom folding edges of a plastic woven bag on a main frame 1 are detected in a right-angled state through an arranged detection electric eye 5, the plastic woven bag on a conveying belt 3 is positioned by a compression roller belt 4 and then conveyed to the area of a forming frame 2 through the conveying belt 3 after being folded, the position of the detection electric eye 5 on a slide rail 11 is manually adjusted, so that the position of the detection electric eye 5 is matched with the width size of the plastic woven bag, when the detection electric eye 5 above the conveying belt 3 detects that the plastic woven bag is conveyed to the position of the forming frame 2, a detection signal is sent to a controller through a shielded cable, the detection electric eye 5 above the forming frame 2 is operated according to a set instruction, when the upper and lower bottom forming folding edges of the plastic woven bag are effectively and vertically erected, the detection electric eye 5 in the area of the forming frame 2 is blocked by a right angle, the information sent to the controller shows that the conveyed bag is a qualified bag, and then the plastic woven bag is conveyed to a next procedure through the conveying belt 3, if one of the detection electric eyes 5 detects that the bag is not effectively shielded, the bag is judged to be unqualified, and then a command of rejecting unqualified products is executed, at the moment, the controller drives the seat plate 61 to move to the upper part of the conveyor belt 3 along the truss 6 through the motor 611, then the lifting rod 63 is controlled to descend to enable the electric suction cup 62 to absorb the plastic woven bag, then the seat plate 61 is driven through the motor 611 to be separated from the area of the conveyor belt 3 along the truss 6, the unqualified products of the plastic woven bag are rejected, and the edge folding quality of the plastic woven bag conveyed on the conveyor belt 3 is maintained; the swing rod 7 is arranged between the compression roller belt 4 and the forming frame 2, the baffle piece 71 fixedly connected between the swing rods 7 is attached to the conveyor belt 3 in an overlapping mode, after the plastic woven bag inclined on the conveyor belt 3 is contacted with a certain position on the baffle piece 71, the plastic woven bag generates deviation on the conveyor belt 3 under the weight of the swing rods 7 and the baffle piece 71, when the plastic woven bag in the deviation process is righted to be in contact with the baffle piece 71 in an attaching mode, the static friction force between the plastic woven bag and the conveyor belt 3 overcomes the gravity of the baffle piece 71, the swing rods 7 deflect, and then the plastic woven bag on the conveyor belt 3 enters the forming frame 2 area through the baffle piece 71 in a righting posture; the connecting rod arranged between the swing rods 7 is matched with the shaft rod 73 rotating on the main rack 1, so that the baffle sheet 71 deflects along with the plastic woven bag, and the plastic woven bag is prevented from being folded to interfere the restoration of the plastic woven bag when the static friction force between the plastic woven bag and the conveyor belt 3 is not overcome at the moment that the baffle sheet 71 in the fixed posture is contacted with the edge of the plastic woven bag in the inclined posture; the annular arc surface 731 is arranged on the shaft lever 73, so that the deflection of the baffle plate 71 is transmitted to the shaft lever 73 in the middle of the straight rod 72, the shaft lever 73 is driven to rotate along the annular arc surface 731, the deflected baffle plate 71 increases the pressure on the conveyor belt 3 under the action of the annular arc surface 731 of the shaft lever 73, the length of the torsion spring 721 is increased by the length-increased shaft lever 73, the torsion force of the torsion spring 721 is further enhanced, and the torsion force is matched with the pressure, increased on the surface of the conveyor belt 3, of the baffle plate 71, the acting force of the baffle plate 71 on the plastic woven bag in a deflected state is increased, and the plastic woven bag on the conveyor belt 3 is convenient to return to a correct posture; the spherical bulge arranged in the middle of the conveying belt enables the inclined plastic woven bag to use the contact of the spherical bulge as a rotating shaft when the inclined plastic woven bag is righted, and the air grooves arranged in a matched mode form air flow on the surface of the conveying belt, so that the friction force between the plastic woven bag and the conveying belt is reduced, the inclined posture of the plastic woven bag is conveniently righted, and the smoothness of the plastic woven bag moving on the surface of the conveying belt is ensured.
The foregoing illustrates and describes the principles, general features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (6)
1. The plastic woven bag upper and lower bottom edge folding detection and rejection device comprises a main frame (1), a forming frame (2) and a controller; forming frames (2) are arranged on two sides of the main frame (1), and a conveyor belt (3) is further arranged between the forming frames (2) of the main frame (1); the method is characterized in that: the plastic woven bag conveying device is characterized in that a compression roller belt (4) is arranged on the main rack (1), the compression roller belt (4) is respectively positioned above two sides of the conveying belt (3) and is parallel to the advancing direction of the conveying belt, the compression roller belt (4) enables the plastic woven bag to be attached to the conveying belt (3), and the compression roller belt (4) and the conveying belt (3) keep the same running state; the conveying belt (3) enables the upper bottom end and the lower bottom end of the conveyed plastic woven bag to be positioned on two sides of the conveying belt, the conveying belt (3) conveys the edge-folded plastic woven bag to the area of the forming frame (2), and the upper end and the lower end of the plastic woven bag are respectively positioned on the forming frame (2) on two sides of the conveying belt (3); the main frame (1) is provided with a detection electric eye (5) in the areas of the forming frame (2) and the conveyor belt (3), the detection electric eye (5) is slidably mounted on a slide rail (11) of the main frame (1), and the detection electric eye (5) judges the light path change of the detection area through a built-in photoelectric sensor; the tail end of the main frame (1) in the advancing direction of the conveyor belt (3) is also provided with a truss (6), a seat plate (61) is further mounted on the end face, facing the conveyor belt (3), of the truss (6) in a sliding mode, and a driving motor (611) is arranged on the seat plate (61); an electric sucker (62) is arranged below the seat plate (61), and a lifting rod (63) is fixedly connected between the seat plate (61) and the electric sucker (62); the electric sucker (61) is separated from the conveyor belt (3) by adsorbing the plastic woven bag; the controller is used for adjusting the operation of the main frame (1), and data communication is carried out between the controller and the detection electric eye (5) through a shielded cable.
2. The upper and lower bottom folding edge detecting and removing device of the plastic woven bag according to claim 1, characterized in that: a rotary swing rod (7) is further arranged on the main rack (1), the swing rod (7) is located between the compression roller belt (4) and the forming frame (2), a blocking piece (71) is fixedly connected between the bottoms of the swing rods (7), and the blocking piece (71) is perpendicular to the advancing direction of the conveyor belt (3); the separation blade (71) protrudes out of the two sides of the conveyor belt (3), the length of the separation blade (71) is smaller than that of the plastic woven bag folded on the conveyor belt (3), and the bottom end of the separation blade (71) is in sliding contact with the surface of the conveyor belt (3).
3. The upper and lower bottom folding edge detecting and removing device of the plastic woven bag according to claim 2, characterized in that: a straight rod (72) is fixedly connected between the top ends of the swing rods (7), a shaft rod (73) is rotatably mounted in the middle of the straight rod (72), and the shaft rod (73) is perpendicular to the plane of the conveyor belt (3); the straight rod (72) is rotatably installed on the main frame (1) through a shaft lever (73), a torsion spring (721) fixedly connected is further arranged between the straight rod (72) and the main frame (1), and the torsion spring (721) and the shaft lever (73) are coaxial.
4. The upper and lower bottom folding edge detecting and removing device of the plastic woven bag according to claim 3, characterized in that: an annular cambered surface (731) is further arranged on the shaft lever (73), and the shaft lever (73) is in contact fit with the annular cambered surface (731); the cambered surface (731) enables the length of the shaft lever (73) to be increased when the shaft lever rotates, so that the straight rod (72) on the shaft lever (73) drives the blocking piece (71) to move downwards.
5. The upper and lower bottom folding edge detecting and removing device of the plastic woven bag according to claim 2, characterized in that: the surface of the conveyor belt (3) is also provided with spherical protrusions (31) which are arranged intermittently, and the spherical protrusions (31) are positioned in the middle of the conveyor belt (3); the spherical bulge (31) enables the plastic woven bag on the conveyor belt (3) to be in a state that the middle part is raised.
6. The upper and lower bottom folding edge detecting and removing device of the plastic woven bag according to claim 5, characterized in that: air grooves (32) are further formed in the two sides of the conveyor belt (3), and the air grooves (32) are located in the area between the blocking piece (71) and the compression roller belt (4); the air duct (32) enables the air flow generated by the air pump to be obliquely blown to the baffle piece (71) along the surface of the conveyor belt (3).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110441599.2A CN113138428B (en) | 2021-04-23 | Plastic woven bag upper and lower bottom edge folding detection and removal device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110441599.2A CN113138428B (en) | 2021-04-23 | Plastic woven bag upper and lower bottom edge folding detection and removal device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113138428A true CN113138428A (en) | 2021-07-20 |
| CN113138428B CN113138428B (en) | 2024-05-17 |
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