Automatic bag feeding machine for packaging machine

Abstract

The present invention discloses an automatic bag feeding machine for a packaging machine, wherein the bag feeding device comprises a bag feeding longitudinal slide seat provided on a frame, a bag feeding push rod installed on the bag feeding longitudinal slide seat, the bag feeding push rod is driven by the bag feeding longitudinal sliding driving device, and the bag feeding push rod is driven to rise and fall by the bag feeding lifting power device; the bag feeding device comprises a bag feeding lifting power support seat, the bag feeding lifting power device is installed on the bag feeding lifting power support seat, the bag feeding longitudinal power device is fixedly installed on the bag feeding longitudinal power support seat, the bag feeding longitudinal sliding frame is longitudinally slidably installed on the bag feeding connecting plate, the bag feeding mounting frame is installed with a lifting suction cup, and the frame is also installed with a supporting device; the bag opening and turning device comprises a turning main shaft, a bag opening mounting seat is fixedly installed in the middle, a bag opening shaft is rotatably installed on the bag opening mounting seat, and bag opening claws are installed at both ends of the bag opening shaft; the bag feeding machine can automatically convey the packaging bags and turn them over to open, and the processes are all automated operations, which reduces manual participation and improves production efficiency.

Description

Technical Field

[0001] The invention relates to the technical field of packaging equipment, and mainly relates to an automatic bag feeding machine of a packaging machine. Background Art

[0002] A packaging bag is a flexible transport packaging container with the advantages of moisture-proof and dust-proof. It can hold some materials that are difficult to transport, making it convenient for loading, unloading and handling.

[0003] In order to improve the packaging efficiency, it is necessary to use an automated device. The public document with patent number 202320276692.7 records an automatic packaging machine, including: a frame; a bag supply device, installed on one side of the frame, suitable for placing rubber bags; a bag taking device, vertically installed on the frame, located above the bag supply device; suitable for adsorbing the rubber bag and transferring the bag opening of the rubber bag upward to the loading station; a bag clamping device, installed on the frame, aligned or approximately aligned with the bag opening of the rubber bag, and arranged along the central axis of the bag opening of the rubber bag; suitable for clamping and fixing the two top corners of the bag opening of the rubber bag; a bag opening device, installed on the frame, aligned or approximately aligned with the bag opening of the rubber bag, and located on both sides of the central axis of the bag opening of the rubber bag; suitable for opening the bag opening of the rubber bag; the automatic packaging machine has the following disadvantages: 1. 1. The bag bin is fixedly mounted on the frame, so it can only be used for one type of packaging bags. It has poor adaptability to different types of packaging bags when supplying bags, which affects the bag supply; 2. The baffle is driven by a linear module to move back and forth along the groove, so a larger linear module is required to ensure the range of movement, which affects the overall structural size and increases the cost of use; 3. When sucking packaging bags, the suction cups are also fixedly installed, and cannot accurately suck when sucking packaging bags of different sizes; 4. The bag-taking device sucks the upper part of the packaging bag, and when the packaging bag is rising, there is no effective support structure at the bottom, which affects the subsequent bag clamping; 5. The rotating clamps are fixed between each other. When the packaging bag needs to be clamped, the packaging bag needs to contact the second clamp on the rotating overtime when rising, which will cause uneven clamping during clamping, affecting subsequent processing. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide an automatic bag feeding machine for a packaging machine, which can automatically convey the packaging bags and flip them open. The entire process is automated, reducing manual participation and improving production efficiency.

[0005] The bag-feeding mechanism is a vertical cam which is mounted on the support frame of the machine and has a base for holding the bag in a vertical direction and forcing the bag to pass through the cam and move the bag-feeding mechanism therethrough so that the bag-feeding mechanism can be adjusted accordingly.

[0006] The bag feeding device is further installed on the frame, and the bag feeding device includes a bag feeding lifting power support seat fixedly installed on the frame, and the bag feeding lifting power support seat is installed with a bag feeding lifting power device, and a bag feeding connecting plate is provided below the bag feeding lifting power support seat, and the bag feeding connecting plate is driven to lift and lower by the bag feeding lifting power device. A bag feeding longitudinal power support seat is fixedly installed on the bag feeding connecting plate, and a bag feeding longitudinal power support device is fixedly installed on the bag feeding connecting plate

[0007] The bag opening and turning device is further provided on the frame at the bag feeding station; the bag opening and turning device includes a turning spindle rotatably mounted on the frame and located above the bag feeding station, a bag opening mounting seat is fixedly mounted on the middle of the turning spindle, a bag opening shaft is rotatably mounted on the bag opening mounting seat, bag opening hook claws are mounted at both ends of the bag opening shaft, and the bag opening shaft is driven to rotate by a bag opening deflection adjustment device, and a first swinging clamping device and a second swinging clamping device for tightening and clamping the two ends of the packaging bag are further provided at both ends of the turning spindle, the turning spindle is driven to rotate by a main deflection adjustment device, and an opening mechanism for sucking the lower part of the bag opening of the packaging bag to open it is installed on the frame below the bag opening hook claw.

[0008] As a preferred solution, the bag supply longitudinal sliding drive device includes a bag supply linear power device, a bag supply first connecting rod and a bag supply second connecting rod. One end of the bag supply first connecting rod is hingedly mounted on the frame, one end of the bag supply second connecting rod is hingedly mounted on the bag supply longitudinal slide, the other end of the bag supply first connecting rod and the other end of the bag supply second connecting rod are hingedly connected, and the bag supply linear power device is hingedly mounted in the middle of the frame and the bag supply first connecting rod to drive the bag supply first connecting rod to swing.

[0009] As a preferred solution, two longitudinal bag supply rails are installed on the frame, the longitudinal bag supply slide is slidably installed on the longitudinal bag supply rails, and a bag supply slide is fixedly installed on the longitudinal bag supply slide. A first longitudinal bag supply adjustment structure is provided between the bag supply slide and the longitudinal bag supply slide, and the bag supply push rod is lifted and installed on the bag supply slide. The first longitudinal bag supply adjustment structure includes a bag supply longitudinal adjustment slot provided on the bag supply slide, and the bag supply slide and the longitudinal bag supply slide are connected by a bag supply push rod adjustment screw, and the bag supply push rod adjustment screw passes through the bag supply longitudinal adjustment slot.

[0010] As a preferred solution, the bag feeding longitudinal sliding frame includes bag feeding longitudinal guide rods installed on both sides of the bag feeding longitudinal power support seat, the bag feeding longitudinal guide rods are longitudinally slidably installed on the bag feeding connecting plate, the upstream end and the downstream end of the bag feeding longitudinal guide rods are provided with bag feeding fixing frames, the bag feeding mounting frame is installed on the bag feeding fixing frame, the bag feeding longitudinal power device includes a bag feeding longitudinal cylinder, the bag feeding longitudinal cylinder is installed between the bag feeding longitudinal power support seat and one of the bag feeding fixing frames, and a bag feeding synchronization rod is installed between the bag feeding fixing frames;

[0011] The bag delivery mounting frame includes a first bag delivery mounting frame and a second bag delivery mounting frame, and the first bag delivery mounting frame and the second bag delivery mounting frame are respectively mounted on the lateral sides of the upstream bag delivery fixing frame. The first bag delivery mounting frame and the second bag delivery mounting frame are provided with a bag delivery adjustment structure for adjusting the position of the lifting suction cup, and the lifting suction cup is also installed on the downstream bag delivery fixing frame on the bag delivery longitudinal guide rod.

[0012] As a preferred solution, the first bag feeding mounting bracket and the second bag feeding mounting bracket have the same structure, the first bag feeding mounting bracket includes a bag feeding transverse connecting rod and a bag feeding longitudinal connecting rod, the adjustment structure includes a bag feeding longitudinal strip through-slot opened on the bag feeding longitudinal connecting rod, the lifting suction cup is constrained in the bag feeding longitudinal strip through-slot and is locked and fixed by fasteners, the bag feeding transverse connecting rod is provided with a bag feeding transverse strip through-slot, the bag feeding transverse connecting rod is fixedly mounted on the upstream bag feeding fixing bracket by a screw passing through the bag feeding transverse strip through-slot, the bag feeding longitudinal connecting rod is fixedly mounted on the bag feeding transverse connecting rod by a screw passing through the bag feeding longitudinal strip through-slot, and the downstream bag feeding fixing bracket is provided with a bag feeding opening strip through-slot, the lifting suction cup is constrained in the bag feeding opening strip through-slot and is locked and fixed by fasteners.

[0013] As a preferred solution, the support device includes a support swing arm hingedly mounted on a frame, a support plate for supporting the bottom of the packaging bag is fixedly mounted on the free end of the support swing arm, a support yaw connecting block is fixedly connected to the hinge of the support swing arm, a support linear cylinder is hinged on the frame, and the guide rod of the support linear cylinder is hinged to the support yaw connecting block.

[0014] As a preferred solution, the first swinging clamping device and the second swinging clamping device have the same structure, and the first swinging clamping device includes a first clamping mounting seat fixedly mounted on the flip main shaft, and a first clamping link is swingably mounted on the first clamping mounting seat, and the swing center of the first clamping link is perpendicular to the axis of the flip main shaft; the free end of the first clamping link is provided with a first bag clamping claw for opening or closing, and the first clamping link is driven to swing back and forth by a first bag clamping linear power device to make the first bag clamping claw approach or move away from the two sides of the bag opening of the packaging bag, and a bag clamping limiting structure for limiting the swing range of the first clamping link is provided on the flip main shaft, and the first bag clamping claw is driven to open and close by the first bag clamping opening and closing power device to clamp or release the two sides of the bag opening of the packaging bag.

[0015] As a preferred solution, the first bag clamping claw includes a first upper claw and a first lower claw, and the first upper claw and the first lower claw are respectively hingedly mounted on the first clamping link, and the first upper claw is hingedly connected to the power end of the first bag clamping opening and closing power device, and the first upper claw is driven to swing by the first bag clamping opening and closing power device, and a bag clamping synchronization link is hinged between the first upper claw and the first lower claw, and when the first upper claw swings, the first lower claw is driven to swing synchronously through the bag clamping synchronization link.

[0016] As a preferred solution, the bag clamping limiting structure includes a bag clamping fixing rod fixedly mounted on the flip main shaft, and a bag clamping limiting top block is threadedly mounted on the bag clamping fixing rod to support the outer side of the first clamping connecting rod; a corresponding bag clamping limiting structure is also provided on one side of the second swing clamping device.

[0017] As a preferred solution, the opening mechanism includes an opening lifting frame that is lifted and slidably installed on a frame, an opening auxiliary adsorption plate is fixedly installed on the opening lifting frame, an opening suction cup is also installed on the opening lifting frame, and an exposure hole is provided on the opening auxiliary adsorption plate to facilitate the exposure of the opening suction cup, and an opening lifting power device that drives the opening lifting frame to rise and fall is installed on the frame.

[0018] The bag-feeding mechanism is a vertical cam which is mounted on the support frame of the machine and has a vertical cam which is adapted to move the bag-feeding mechanism toward the support frame, whereby the bag-feeding mechanism is mounted on the support frame to move the bag-feeding mechanism toward the support frame.

[0019] The bag feeding device is further installed on the frame, and the bag feeding device includes a bag feeding lifting power support seat fixedly installed on the frame, and the bag feeding lifting power support seat is installed with a bag feeding lifting power device, and a bag feeding connecting plate is provided below the bag feeding lifting power support seat, and the bag feeding connecting plate is driven to lift and lower by the bag feeding lifting power device. A bag feeding longitudinal power support seat is fixedly installed on the bag feeding connecting plate, and a bag feeding longitudinal power support device is fixedly installed on the bag feeding connecting plate

[0020] The frame is further provided with a bag opening and turning device at the bag feeding station; the bag opening and turning device comprises a turning spindle rotatably mounted on the frame and located above the bag feeding station, a bag opening mounting seat is fixedly mounted on the middle of the turning spindle, a bag opening shaft is rotatably mounted on the bag opening mounting seat, bag opening hook claws are mounted at both ends of the bag opening shaft, and the bag opening shaft is driven to rotate by the bag opening deflection adjustment device, and a first swing clamping device and a second swing clamping device for tightening and clamping the two ends of the packaging bag are further provided at both ends of the turning spindle, the turning spindle is driven to rotate by the main deflection adjustment device, and an opening mechanism for sucking the lower part of the bag opening of the packaging bag to open it is installed on the frame below the bag opening hook claw;

[0021] First, the packaging bags are stacked on the feeding station of the bag support plate, and the horizontal position is limited by the horizontal limiting structure. Then, the longitudinal positioning structure accurately positions the packaging bags in the longitudinal position on the feeding station. Then, the longitudinal sliding drive device of the bag supply enables the bag supply push rod to push the packaging bags from the feeding station to the suction station. The longitudinal positioning structure determines that the packaging bags are in the exact position on the suction station. At this time, the packaging bags continue to be stacked on the feeding station, and the bag supply lifting power device drives the bag supply push rod to descend. The bag supply longitudinal sliding drive device enables the bag supply push rod to return to the feeding station. Then, the bag supply push rod rises. After the packaging bags on the suction station are sucked, it continues to push the packaging bags; the bag feeding lifting power device drives the bag feeding connecting plate to descend. The bag feeding connecting plate is at the suction station, and the lifting suction cup controls the vacuum system to suck the packaging bags below. Then The bag feeding connecting plate rises, and the bag feeding longitudinal power device drives the bag feeding longitudinal sliding frame to move toward the bag feeding station, so that the lifting suction cup drives the packaging bag to move longitudinally, and at the same time the supporting device supports the bottom of the packaging bag, and then the opening mechanism sucks the lower part of the bag opening of the packaging bag. In this way, the lifting suction cup sucks the upper part of the bag opening of the packaging bag to open the bag opening, and then the bag opening shaft is driven to rotate through the bag opening deflection adjustment device, and then the bag opening claw swings and hooks into the bag opening of the packaging bag. The first swing clamping device and the second swing clamping device clamp both sides of the packaging bag and tighten the bag opening of the packaging bag. The opening mechanism stops sucking the lower part of the bag opening of the packaging bag, and then the main deflection adjustment device drives the flipping main shaft to rotate, so that the bag opening of the packaging bag is deflected and accurately covered at the material outlet; the bag feeding machine can automatically transport the packaging bag to flip and open, and the process is all automated operation, which reduces manual participation and improves production efficiency.

[0022] Since the longitudinal sliding drive device for supplying bag includes a linear power device for supplying bag, a first connecting rod for supplying bag and a second connecting rod for supplying bag, one end of the first connecting rod for supplying bag is hingedly mounted on the frame, one end of the second connecting rod for supplying bag is hingedly mounted on the longitudinal sliding seat for supplying bag, and the other end of the first connecting rod for supplying bag and the other end of the second connecting rod for supplying bag are hingedly connected, the linear power device for supplying bag is hingedly connected to the middle part of the frame and the first connecting rod for supplying bag to drive the first connecting rod for supplying bag to swing; the deflection of the first connecting rod for supplying bag can drive the deflection of the second connecting rod for supplying bag, and the cooperation between the first connecting rod for supplying bag and the second connecting rod for supplying bag can enlarge the swing distance of the first connecting rod for supplying bag driven by the linear power device for supplying bag, thereby improving efficiency.

[0023] Furthermore, since two bag supply longitudinal slide rails are installed on the frame, the bag supply longitudinal slide seat is slidably installed on the bag supply longitudinal slide rails, and the bag supply slide plate is fixedly installed on the bag supply longitudinal slide seat. A first bag supply longitudinal adjustment structure is provided between the bag supply slide plate and the bag supply longitudinal slide seat, and the bag supply push rod is lifted and installed on the bag supply slide plate. The first bag supply longitudinal adjustment structure includes a bag supply longitudinal adjustment slot provided on the bag supply slide plate, and the bag supply slide plate is connected to the bag supply longitudinal slide seat by a bag supply push rod adjustment screw, and the bag supply push rod adjustment screw penetrates The bag supply longitudinal adjustment slot; the bag supply longitudinal slide can slide on the bag supply longitudinal slide rail, and at the same time, the position between the bag supply slide plate and the bag supply longitudinal slide can be longitudinally adjusted through the bag supply first longitudinal adjustment structure of the bag supply, so that the bag supply push rod on the bag supply slide plate can be longitudinally adjusted, so that the bag supply push rod can accurately fit the packaging bag to be pushed, thereby accurately supplying bags; by loosening the bag supply push rod adjusting screw, the bag supply slide plate can slide along the bag supply longitudinal adjustment slot, and then tightening the bag supply push rod adjusting screw can press and fix the bag supply slide plate. The structure is simple, effective and easy to use.

[0024] The lifting of the lifting mechanism is to lift the lifting mechanism on the lifting side of the lifting frame, and the lifting mechanism is to lift the lifting mechanism on the lifting side of the lifting frame to lift the lifting mechanism, so that the lifting mechanism can be lifted and lowered into the lifting mechanism on the lifting mechanism.

[0025] The bag feeding mounting frame includes a first bag feeding mounting frame and a second bag feeding mounting frame, and the first bag feeding mounting frame and the second bag feeding mounting frame are respectively mounted on the lateral sides of the upstream bag feeding fixing frame, and the first bag feeding mounting frame and the second bag feeding mounting frame are provided with a bag feeding adjustment structure for adjusting the position of the lifting suction cup, and the lifting suction cup is also installed on the downstream bag feeding fixing frame on the bag feeding longitudinal guide rod; in this way, the lifting suction cups are distributed at both ends, and can be close to the edge when sucking up the packaging bag, effectively sucking the entire packaging bag, and the bag feeding adjustment structure can cope with packaging bags of different sizes, thereby improving the flexibility of the device.

[0026] Since the structures of the first bag feeding mounting bracket and the second bag feeding mounting bracket are the same, the first bag feeding mounting bracket includes a bag feeding transverse connecting rod and a bag feeding longitudinal connecting rod, the bag feeding adjustment structure includes a bag feeding longitudinal strip through slot provided on the bag feeding longitudinal connecting rod, the lifting suction cup is constrained in the bag feeding longitudinal strip through slot and is locked and fixed by a fastener, the bag feeding transverse connecting rod is provided with a bag feeding transverse strip through slot, the bag feeding transverse connecting rod is fixedly mounted on the upstream bag feeding fixing bracket by a screw passing through the bag feeding transverse strip through slot, and the bag feeding longitudinal connecting rod is fixedly mounted on the upstream bag feeding fixing bracket by a screw passing through the bag feeding transverse strip through slot, and the bag feeding longitudinal connecting rod is fixedly mounted on the upstream bag feeding fixing bracket by a screw passing through the bag feeding transverse connecting rod. The screws passing through the longitudinal strip slots of the bag delivery are fixed on the transverse connecting rod of the bag delivery, and the downstream bag delivery fixing frame is provided with an opening strip slot of the bag delivery, and the lifting suction cup is constrained in the opening strip slot of the bag delivery and is locked and fixed by fasteners; the transverse connecting rod of the bag delivery can move laterally along the transverse strip slot of the bag delivery, so as to adjust the transverse position of the lifting suction cup, and the lifting suction cup can adjust its position longitudinally along the longitudinal strip slot of the bag delivery, and the lifting suction cup on the downstream bag delivery fixing frame can also be adjusted in position through the opening strip slot of the bag delivery, so as to change the position of the lifting suction cup.

[0027] Furthermore, since the supporting device includes a supporting swing arm hingedly mounted on the frame, a support plate supporting the bottom of the packaging bag is fixedly mounted on the free end of the supporting swing arm, a supporting yaw connecting block is fixedly connected to the hinge of the supporting swing arm, a supporting linear cylinder is hinged on the frame, and the guide rod of the supporting linear cylinder is hinged to the supporting yaw connecting block; through the extension and retraction of the supporting linear cylinder, the supporting swing arm can be driven to swing through the supporting yaw connecting block, and the support plate can be swung, thereby cooperating with the lifting suction cup to effectively support the packaging bag and prevent the lower part of the packaging bag from falling, facilitating subsequent processing and improving practicality.

[0028] and a control mechanism that the first bag clamping jaws are connected to the control mechanism, the control mechanism comprising: a first bag clamping jaw that is fixedly mounted on the first pivot axis and a second bag clamping jaw that is swiveled to close the control mechanism.

[0029] Since the first bag clamping claw includes a first upper claw and a first lower claw, the first upper claw and the first lower claw are respectively hingedly mounted on the first clamping connecting rod, the first upper claw is hingedly connected to the power end of the first bag clamping opening and closing power device, and the first upper claw is driven to swing by the first bag clamping opening and closing power device. A bag clamping synchronization connecting rod is hinged between the first upper claw and the first lower claw, and when the first upper claw swings, the first lower claw is driven to swing synchronously through the bag clamping synchronization connecting rod; in this way, when the first upper claw and the first lower claw need to be opened, it is only necessary to control the swing of the first upper claw through the first bag clamping opening and closing power device, and then the first upper claw can make the first lower claw swing synchronously through the bag clamping synchronization connecting rod, so that the opening and closing of the first upper claw and the first lower claw are controlled by one power device, saving costs and improving practicality.

[0030] Furthermore, since the bag clamping limiting structure includes a bag clamping fixing rod fixedly mounted on the flip main shaft, a bag clamping limiting top block is threadedly mounted on the bag clamping fixing rod and presses against the outer side of the first clamping link; a corresponding bag clamping limiting structure is also provided on one side of the second swinging clamping device; in this way, when the first upper claw and the first lower claw on the first clamping link clamp one side of the packaging bag, they can effectively press against the outer side of the first clamping link when they swing, thereby preventing the first clamping link from swinging too much and damaging the packaging bag, thereby ensuring the bag opening efficiency.

[0031] Furthermore, since the opening mechanism includes an opening lifting frame that is lifted and slidably mounted on the frame, an opening auxiliary adsorption plate is fixedly mounted on the opening lifting frame, an opening suction cup is also mounted on the opening lifting frame, and an exposure hole is provided on the opening auxiliary adsorption plate to facilitate the exposure of the opening suction cup, and an opening lifting power device for driving the opening lifting frame to lift is mounted on the frame; the opening lifting power device can be used to control the opening of the opening lifting frame to rise, the opening suction cup first contacts the lower part of the packaging bag, and then the opening auxiliary adsorption plate continues to rise and contacts the packaging bag, and the opening lifting frame descends. After the descent is completed, the opening suction cup pulls the bag opening downward to ensure accurate bag opening. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below with reference to the accompanying drawings and examples.

[0033] Figure 1 It is a structural diagram of an embodiment of the present invention;

[0034] Figure 2 is a top view of a bag supply device according to an embodiment of the present invention;

[0035] Figure 3 This is a front view of a bag supply device according to an embodiment of the present invention;

[0036] Figure 4 yes Figure 3 A-direction view;

[0037] Figure 5 This is a front view of the bag feeding device according to an embodiment of the present invention.

[0038] Figure 6 This is a left side view of the bag feeding device according to an embodiment of the present invention;

[0039] Figure 7 yes Figure 6 B-direction view;

[0040] Figure 8 1 is a schematic structural diagram of a supporting device according to an embodiment of the present invention;

[0041] Figure 9 This is a front view of the bag opening and turning device according to an embodiment of the present invention;

[0042] Figure 10 2. It is a schematic structural diagram of a bag opening and turning device according to an embodiment of the present invention;

[0043] Figure 11 This is a left side view of the bag opening and turning device according to an embodiment of the present invention;

[0044] Figure 12 yes Figure 9 A local enlarged view of point C;

[0045] In the accompanying drawings: 101, frame; 102, bag support plate; 103, bag supply longitudinal slide; 104, bag supply push rod; 105, feeding station; 106, suction station; 107, bag supply longitudinal slide rail; 108, bag supply slide plate; 109, bag supply sliding roller; 110, bag supply longitudinal strip hole; 111, bag supply longitudinal adjustment slot; 112, bag supply push rod adjustment screw; 113, bag supply first connecting rod; 11 4. Second connecting rod for bag supply; 115. Linear cylinder for bag supply; 116. Fixed transverse baffle; 117. Movable transverse baffle; 118. Transverse limit strip slot; 119. Lifting cylinder for bag supply; 120. First sliding positioning plate; 121. Second sliding positioning plate; 122. First adjustment slot; 123. Second adjustment slot; 124. Push plate for bag supply; 125. Connecting plate for bag supply; 126. Movable notch;

[0046] 201. Support arm; 202. Power support seat for bag delivery and lifting; 203. Guide rod for bag delivery and lifting; 204. Rotating roller for bag delivery and lifting; 205. Cylinder for bag delivery and lifting; 206. Connecting plate for bag delivery; 207. Power support seat for longitudinal direction of bag delivery; 208. Longitudinal guide rod for bag delivery; 209. Fixed sleeve for bag delivery; 210. Fixed frame for bag delivery; 211. Longitudinal cylinder for bag delivery; 212. Synchronous rod for bag delivery; 213. First mounting frame for bag delivery; 214. Transverse connecting rod for bag delivery ; 215, bag feeding longitudinal connecting rod; 216, bag feeding transverse strip slot; 217, bag feeding longitudinal strip slot; 218, bag feeding second mounting frame; 219, bag feeding opening strip slot; 220, bag feeding screw; 221, lifting suction cup; 222, bag feeding limit top block; 223, support swing arm; 224, support plate; 225, support yaw connecting block; 226, support linear cylinder; 227, exhaust system; 228, blowing system; 229, bag feeding station;

[0047] 301. Turning spindle; 302. Bag opening mounting seat; 303. Bag opening axis; 304. Bag opening hook; 305. Bag opening yaw connecting rod; 306. Bag opening linear cylinder; 307. First clamping mounting seat; 308. First clamping connecting rod; 309. Second clamping mounting seat; 310. Second clamping connecting rod; 311. First bag clamping jaw; 312. Second bag clamping jaw; 313. First bag clamping linear cylinder; 314. First cylinder hinge plate; 315. Second cylinder hinge plate; 316. Second bag clamping linear cylinder; 317. First upper jaw; 318. First lower jaw; 319. Bag clamping synchronization connecting rod; 320. Bag clamping extension connecting rod; 321. First bag clamping opening and closing cylinder; 322. Second bag clamping opening and closing cylinder; 323. Second upper claw; 324. Second lower claw; 325. Main yaw link for bag opening; 326. Support seat for bag opening; 327. Main linear cylinder for bag opening; 328. Bag clamping fixing rod; 329. Limiting top block for bag clamping; 330. Bag clamping protrusion; 331. Bag opening hook link; 332. Strip through hole for bag opening; 333. Sliding strip hole for bag clamping; 334. Adjusting screw for bag opening; 335. Opening lifting frame; 336. Auxiliary adsorption plate for opening; 337. Suction cup for opening; 338. Exposure hole; 339. Opening lifting cylinder; 340. Opening fixing seat; 341. Ventilation rod; 342. Guide spring; 343. Spring guide rod. DETAILED DESCRIPTION

[0048] The present invention is further described in detail below through specific examples.

[0049] The longitudinal direction in the bag supply device is the moving direction of the push rod, and vice versa is the transverse direction.

[0050] The longitudinal direction in the bag feeding device and the bag opening and turning device is the moving direction of the bag feeding longitudinal guide rod 208, and vice versa is the transverse direction.

[0051] like Figures 1 to 12As shown, an automatic bag feeding machine of a packaging machine includes a frame 101, a bag supporting plate 102 is provided on the frame 101, a transverse limiting structure for limiting the transverse position of the packaging bag is provided on the bag supporting plate 102, a longitudinal positioning structure for longitudinally positioning the packaging bag is provided on the bag supporting plate 102, the transverse limiting structure and the longitudinal limiting structure form a placement area for placing the packaging bag, a feeding station 105 and a suction station 106 are provided on the placement area, a longitudinal slide 103 for supplying bags that moves longitudinally is provided on the frame 101, and the longitudinal slide 103 for supplying bags that moves longitudinally is provided. A bag supply push rod 104 is installed on the bag support plate 102. At least two bag supply longitudinal strip holes 110 extending from the feeding station 105 to the suction station 106 are provided on the bag supply plate 102. The bag supply push rod 104 passes through the bag support plate 102 and is constrained in the bag supply longitudinal strip holes 110. The bag supply push rod 104 drives the bag supply longitudinal slide 103 to reciprocate between the feeding station 105 and the suction station 106 through the bag supply longitudinal sliding drive device. The bag supply push rod 104 is driven to rise and fall by the bag supply lifting power device so that the bag supply push rod 104 is higher or lower than the support surface of the bag support plate 102;

[0052] The frame 101 is also equipped with a bag feeding device, which includes a bag feeding lifting power support seat 202 fixedly mounted on the frame 101, a bag feeding lifting power device is installed on the bag feeding lifting power support seat 202, a bag feeding connecting plate 206 is provided below the bag feeding lifting power support seat 202, and the bag feeding connecting plate 206 is driven to rise and fall by the bag feeding lifting power device, a bag feeding longitudinal power support seat 207 is fixedly mounted below the bag feeding connecting plate 206, and a bag feeding longitudinal power support seat 207 is fixed on the bag feeding longitudinal power support seat 207. A bag feeding longitudinal power device is installed, and a bag feeding longitudinal sliding frame is longitudinally slidably installed on the bag feeding connecting plate 206. The bag feeding longitudinal sliding frame is driven by the bag feeding longitudinal power device to slide longitudinally between the suction station 106 and the bag supply station 229. A bag feeding mounting frame is fixedly installed below the bag feeding longitudinal sliding frame, and a plurality of lifting suction cups 221 for sucking packaging bags are installed on the bag feeding mounting frame. The lifting suction cups 221 are connected to the exhaust system 227. A supporting device for supporting the bottom of the packaging bag is also installed on the frame 101;

[0053] The frame 101 is further provided with a bag opening and turning device at the bag supplying station 229; the bag opening and turning device includes a turning spindle 301 rotatably mounted on the frame 101 and located above the bag supplying station 229, a bag opening mounting seat 302 is fixedly mounted on the middle of the turning spindle 301, a bag opening shaft 303 is rotatably mounted on the bag opening mounting seat 302, bag opening hooks 304 are mounted at both ends of the bag opening shaft 303, the bag opening shaft 303 is driven to rotate by a bag opening deflection adjustment device, a first swinging clamping device and a second swinging clamping device for tightening and clamping the two ends of the packaging bag are further provided at both ends of the turning spindle 301, the turning spindle 301 is driven to rotate by a main deflection adjustment device, and an opening mechanism for sucking the lower part of the bag mouth of the packaging bag to open it is installed on the frame 101 below the bag opening hook 304.

[0054] like Figure 2 As shown, two longitudinal bag supply rails 107 are installed on the frame 101, and the longitudinal bag supply slide 103 is slidably installed on the longitudinal bag supply rails 107. A bag supply slide 108 is fixedly installed on the longitudinal bag supply slide 103. A first longitudinal bag supply adjustment structure is provided between the bag supply slide 108 and the longitudinal bag supply slide 103. The bag supply push rod 104 is lifted and installed on the bag supply slide 108. Two longitudinal bag supply rails 107 are installed on the frame 101, and a bag supply sliding roller 109 cooperating with the longitudinal bag supply rail 107 is provided on the longitudinal bag supply slide 103. Two bag supply sliding rollers 109 are slidably installed on the upper and lower parts of one bag supply longitudinal slide 107, and the bag supply sliding rollers 109 are rotatably installed on the longitudinal bag supply slide 103. On the upper side, corresponding bag supply sliding rollers 109 are provided on both sides, so that the bag supply longitudinal slide 103 can effectively slide on the bag supply longitudinal slide rail 107 through the bag supply sliding rollers 109 when sliding, and two bag supply longitudinal strip holes 110 are provided on the bag support plate 102 for pushing the packaging bags to slide longitudinally. There is a bag supply push rod 104 corresponding to each of the two bag supply push rods 104 strip grooves. The bag supply push rod 104 rises and falls and slides in the bag supply longitudinal strip holes 110. At the same time, the position between the bag supply slide plate 108 and the bag supply longitudinal slide seat 103 can be longitudinally adjusted through the first longitudinal adjustment structure of the bag supply, so that the bag supply push rod 104 on the bag supply slide plate 108 can be longitudinally adjusted, so that the bag supply push rod 104 can accurately fit the packaging bag to be pushed, thereby accurately supplying the bag.

[0055] Furthermore, the first longitudinal adjustment structure of the bag supply includes a bag supply longitudinal adjustment slot 111 provided on the bag supply slide 108, and the bag supply slide 108 is connected to the bag supply longitudinal slide 103 via a bag supply push rod adjustment screw 112, and the bag supply push rod adjustment screw 112 passes through the bag supply longitudinal adjustment slot 111; the bag supply push rod 104 is first fixedly installed on the bag supply slide 108, and two bag supply longitudinal adjustment slots 111 are provided at the longitudinal ends of the bag supply push rod 104, and the bag supply longitudinal adjustment slots 111 on one bag supply push rod 104 form a straight line, and the two bag supply longitudinal adjustment slots 111 correspond to a bag supply longitudinal strip hole 110 on the bag support plate 102, and the other bag supply push rod 104 is provided with a bag supply longitudinal strip hole 110. The same applies to the push rod 104. The corresponding bag supply longitudinal adjustment slot 111 is provided with a bag supply push rod adjustment screw 112, and the bag supply push rod adjustment screw 112 is threadedly connected to the bag supply longitudinal slide 103. In this way, the bag supply slide 108 can be pressed against the bag supply longitudinal slide 103 by the bag supply push rod adjustment screw 112. The bag supply slide 108 can be fixed to the bag supply longitudinal slide 103 by loosening the bag supply push rod adjustment screw 112. The bag supply slide 108 can be slid along the bag supply longitudinal adjustment slot 111, and then the bag supply push rod adjustment screw 112 can be tightened and fixed. In this way, by adjusting the longitudinal position of the bag supply push rod 104, it can adapt to packaging bags of different sizes, ensuring accurate bag supply, and the structure is simple, effective and easy to use.

[0056] like Figure 4The bag supply longitudinal sliding drive device includes a bag supply linear power device, a bag supply first connecting rod 113 and a bag supply second connecting rod 114, one end of the bag supply first connecting rod 113 is hingedly mounted on the frame 101, one end of the bag supply second connecting rod 114 is hingedly mounted on the bag supply longitudinal slide 103, the other end of the bag supply first connecting rod 113 and the other end of the bag supply second connecting rod 114 are hingedly connected, and the bag supply linear power device is hingedly mounted on the frame 101 and the bag supply first connecting rod 113. The middle part of 113 drives the first bag supply link 113 to swing; the bag supply linear power device includes a bag supply linear cylinder 115, the base of the bag supply linear cylinder 115 is hinged on the frame 101, and the guide rod of the bag supply linear cylinder 115 is hinged to the rod body of the first bag supply link 113; the bag supply first link 113 is hinged to one side of the frame 101 and swings around the hinge point, while the bag supply second link 114 is hinged to the first bag supply link 113, and the bag supply second link 114 is hinged to the first bag supply link 113. It is hinged to the longitudinal slide 103 of the bag supply, and the longitudinal slide 103 of the bag supply can only move longitudinally. In this way, when the first connecting rod 113 of the bag supply swings, it can drive the second connecting rod 114 of the bag supply to move, so that the second connecting rod 114 of the bag supply can push the longitudinal slide 103 of the bag supply to slide along the longitudinal guide rail of the bag supply, and the linear cylinder 115 of the bag supply is hinged to one end of the frame 101. In this way, when the guide rod is extended, the guide rod pushes the first connecting rod 113 of the bag supply, and the first connecting rod 113 of the bag supply swings. Therefore, the guide rod pushed by the bag supply linear cylinder 115 will also swing through the hinge, which effectively improves flexibility. When the first bag supply link 113 drives the second bag supply link 114 to slide longitudinally, the distance the guide rod of the bag supply linear cylinder 115 extends can be effectively enlarged, so that the reciprocating movement between the feeding station 105 and the suction station 106 can be met without a cylinder with a large stroke; the telescopic effect of the bag supply linear cylinder 115 is enlarged, the usage volume of the bag supply linear cylinder 115 is reduced, and the cost is reduced.

[0057] The movable transverse baffle 117 is fixed to the bag support plate 102 and is movable transverse baffle 117 for transverse movement. The movable transverse baffle 117 is installed on the bag support plate 102 through a transverse adjustment structure. The transverse adjustment structure is the same as the first longitudinal adjustment structure of the bag supply; the fixed transverse baffle 116 limits the transverse side of the packaging bag, and the bag support plate 102 is provided with a transverse limiting bar groove 118 for facilitating the sliding of the movable transverse baffle 117. There are three transverse limiting bar grooves 118, which are evenly spaced on the bag support plate 102. The movable transverse baffle 117 is provided with a threaded hole, and a transverse adjustment screw is provided under the bag support plate 102. In this way, the movable transverse baffle 117 can be fixed by tightening the transverse adjustment screw, and the movable transverse baffle 117 can be adjusted by loosening the transverse adjustment screw so that it can limit the packaging bag laterally. Adjusting the position of the movable transverse baffle 117 helps to limit packaging bags of different sizes, and at the same time ensures that the packaging bags can move accurately and neatly when the bag supply push rod 104 is pushed.

[0058] In this embodiment, the longitudinal positioning structure includes a first sliding positioning plate 120 longitudinally slidably mounted on the feeding station 105 and a second sliding positioning plate 121 longitudinally slidably mounted on the suction station 106, the first sliding positioning plate 120 positions the upstream side of the packaging bag, the first sliding positioning plate 120 is provided with a receiving groove for accommodating the bag supply push rod 104, the second sliding positioning plate 121 positions the downstream side of the packaging bag, the first sliding positioning plate 120 and the second sliding positioning plate 121 are adjusted by the second longitudinal adjustment structure of the bag supply and the third longitudinal adjustment structure of the bag supply, the second longitudinal adjustment structure of the bag supply and the third longitudinal adjustment structure of the bag supply are the same as the first longitudinal adjustment structure of the bag supply; the second longitudinal adjustment structure of the bag supply The structure includes two first adjustment slots 122 arranged on the bag support plate 102, and a threaded hole is provided on the first sliding positioning plate 120. The first adjustment screw passes through the first adjustment slot 122 and is threadedly connected to the threaded hole. By tightening or loosening the first adjustment screw, the longitudinal position of the first sliding positioning plate 120 can be changed, thereby changing the starting pushing position of the packaging bag on the feeding station 105; the third longitudinal adjustment structure of the bag supply includes two second adjustment slots 123, and the second sliding positioning plate 121 is threadedly connected with a second adjustment screw passing through the second adjustment slot 123. The second sliding positioning plate 121 can adjust the packaging bag to a suitable end position on the suction station 106, thereby improving the flexibility of pushing corresponding to different packaging bags.

[0059] like Figure 2 and Figure 3As shown, the lifting power device includes a bag supply lifting cylinder 119, which is fixedly mounted on the bag supply slide 108. The bag supply longitudinal slide 103 is provided with a movable notch 126 for facilitating the longitudinal movement of the bag supply lifting cylinder 119. When the bag supply slide 108 is adjusted, the bag supply lifting cylinder 119 will change due to the change in the position of the bag supply slide 108. Therefore, the movement of the bag supply lifting cylinder 119 can be facilitated through the movable notch 126, so that the bag supply push rod 104 can be controlled to descend, so that the bag supply push rod 104 can avoid contact with the packaging bag on the feeding station 105 when returning to the feeding station 105, and then rise from the receiving tank to continue pushing.

[0060] In this embodiment, the bag supply push rod 104 includes a bag supply push plate 124 that contacts the packaging bag. The bag supply push plate 124 is connected to the guide rod of the bag supply lifting cylinder 119 via a bag supply connecting plate 125. The lower end of the bag supply push plate 124 corresponds to the position of the movable notch 126. The bag supply push plate 124 can increase the contact area with the packaging bag to facilitate pushing, and when the guide rod is extended or retracted, the bag supply push plate 124 will also extend or retract to ensure that the bag supply push plate 124 is not affected.

[0061] like Figure 6 As shown, the bag feeding longitudinal sliding frame includes a bag feeding longitudinal guide rod 208 installed on both sides of the bag feeding longitudinal power support seat 207, the bag feeding longitudinal guide rod 208 is longitudinally slidably installed on the bag feeding connecting plate 206, and the upstream end and downstream end of the bag feeding longitudinal guide rod 208 are both provided with a bag feeding fixing frame 210, the bag feeding mounting frame is installed on the bag feeding fixing frame 210, the bag feeding longitudinal power device includes a bag feeding longitudinal cylinder 211, the bag feeding longitudinal cylinder 211 is installed between the bag feeding longitudinal power support seat 207 and one of the bag feeding fixing frames 210, and a bag feeding synchronization rod 212 is installed between the bag feeding fixing frames 210; since the bag feeding longitudinal power support seat 207 and the bag feeding longitudinal power support seat 207 are fixedly installed below the bag feeding connecting plate 206, the bag feeding longitudinal power device 211 includes a bag feeding longitudinal cylinder 211, and the bag feeding longitudinal cylinder 211 is installed between the bag feeding longitudinal power support seat 207 and one of the bag feeding fixing frames 210, and a bag feeding synchronization rod 212 is installed between the bag feeding fixing frames 210; Towards the power support seat 207, the bag feeding longitudinal cylinder 211 is fixedly installed on the bag feeding longitudinal power support seat 207. The bag feeding longitudinal cylinder 211 is installed in the longitudinal direction, and the guide rod is longitudinally extended and retracted. Two bag feeding fixed shaft sleeves 209 are symmetrically installed on both sides of the bag feeding longitudinal power support seat 207. The bag feeding fixed shaft sleeves 209 are fixedly installed on the bag feeding connecting plate 206, and the bag feeding longitudinal guide rod 208 passes through the bag feeding fixed shaft sleeve 209. In this way, when the bag feeding longitudinal cylinder 211 drives the bag feeding fixing frame 210 to move toward the bag feeding station 229, the bag feeding longitudinal guide rod 208 will follow the longitudinal movement, while ensuring the accuracy of the longitudinal movement, and effectively supporting the bag feeding mounting frame below to improve the firmness of the device.

[0062] like Figure 7As shown, the bag feeding mounting frame includes a first bag feeding mounting frame 213 and a second bag feeding mounting frame 218, which are respectively mounted on the lateral sides of the upstream bag feeding fixed frame 210, and the first bag feeding mounting frame 213 and the second bag feeding mounting frame 218 are provided with a bag feeding adjustment structure for adjusting the position of the lifting suction cup 221, and the lifting suction cup 221 is also installed on the downstream bag feeding fixed frame 210 on the bag feeding longitudinal guide rod 208; since the packaging bag is rectangular, it is necessary to effectively suck the four corners of the packaging bag to ensure that the packaging bag can be stably sucked and moved, so the first bag feeding mounting frame 213 and the second bag feeding mounting frame 218 can respectively accurately suck the two sides of the packaging bag at the upstream end, and the packaging bag on the downstream end is sucked by the lifting suction cup 221 on the downstream bag feeding fixed frame 210 to ensure accurate suction. The bag feeding adjustment structure can cope with packaging bags of different sizes, thereby improving the flexibility of the device.

[0063] Furthermore, the structures of the first bag feeding mounting frame 213 and the second bag feeding mounting frame 218 are the same. The first bag feeding mounting frame 213 includes a bag feeding transverse connecting rod 214 and a bag feeding longitudinal connecting rod 215. The bag feeding adjustment structure includes a bag feeding longitudinal strip through groove 217 provided on the bag feeding longitudinal connecting rod 215. The lifting suction cup 221 is constrained in the bag feeding longitudinal strip through groove 217 and is locked and fixed by fasteners. The bag feeding transverse connecting rod 214 is provided with a bag feeding transverse strip through groove 216. The bag feeding transverse connecting rod 214 is fixed to the upstream bag feeding fixing frame 2 by screws passing through the bag feeding transverse strip through groove 216. 10, the bag feeding longitudinal connecting rod 215 is fixedly installed on the bag feeding transverse connecting rod 214 by means of screws passing through the bag feeding longitudinal strip through slot 217, and the downstream bag feeding fixing frame 210 is provided with a bag feeding opening strip through slot 219, and the lifting suction cup 221 is constrained in the bag feeding opening strip through slot 219 and is locked and fixed by fasteners; the bag feeding second mounting frame 218 also includes corresponding bag feeding transverse connecting rod 214 and bag feeding longitudinal connecting rod 215, and the bag feeding longitudinal connecting rod 215 on the bag feeding second mounting frame 218 is also provided with a corresponding lifting suction cup 221, so that it is symmetrically installed with the bag feeding first mounting frame 213, and the bag feeding transverse connecting rod 214 is fixedly installed with the bag feeding first mounting frame 213. The lateral connecting rod 214 is installed on both sides of the upstream bag feeding fixing frame 210, and the bag feeding lateral connecting rod 214 is provided with a bag feeding lateral strip through groove 216, and the fastener is a bag feeding screw 220. The bag feeding screw 220 passes through the bag feeding lateral strip through groove 216 and is threadedly connected to the upstream bag feeding fixing frame 210, so that the bag feeding lateral connecting rod 214 can adjust its position along the bag feeding lateral strip through groove 216 to change the lateral distance, so that the lifting suction cup 221 fixed on the bag feeding longitudinal connecting rod 215 can adjust the distance laterally, and the bag feeding longitudinal connecting rod 215 is respectively provided with two lifting suction cups 221, and the bag feeding longitudinal connecting rod 215 is also provided with corresponding The longitudinal strip groove 217 for feeding bags, the lifting suction cup 221 can effectively adjust the position along the longitudinal strip groove 217 for feeding bags, and can be adjusted horizontally and vertically in cooperation with the transverse connecting rod 214 for feeding bags. At the same time, the downstream bag feeding fixing frame 210 is provided with two transversely symmetrically installed bag feeding opening strip grooves 219, and each bag feeding opening strip groove 219 is installed with a lifting suction cup 221. The bag feeding opening strip groove 219 is arranged horizontally, so that the lifting suction cup 221 can be adjusted horizontally. In this way, three lifting suction cups 221 are provided on one side and can be adjusted longitudinally and horizontally, ensuring that after the packaging bag is sucked up, the packaging bag can move smoothly without affecting the transportation.

[0064] like Figure 5 and Figure 6As shown, the bag feeding connection plate 206 is equipped with a bag feeding lifting guide rod 203, and the bag feeding lifting guide rod 203 is located on both sides of the bag feeding lifting power support seat 202. The bag feeding lifting power support seat 202 is fixedly equipped with bag feeding lifting rotating rollers 204 that cooperate with the bag feeding lifting guide rod 203 on both sides. The bag feeding lifting power device includes a bag feeding lifting cylinder 205, and the guide rod of the bag feeding lifting cylinder 205 is hingedly connected to the bag feeding connection plate 206. Since the bag feeding lifting power support seat 202 is fixedly installed on the frame 101 through the support arm 201, the bag feeding lifting The power support seat 202 supports the installation of the bag feeding lifting cylinder 205, and the guide rod of the bag feeding lifting cylinder 205 can be lifted and retracted. Four bag feeding lifting rotating rollers 204 are installed on both sides of the bag feeding lifting power support seat 202, and are installed opposite to each other, so that the bag feeding lifting guide rod 203 passes vertically through the middle. When the bag feeding lifting cylinder 205 drives the bag feeding connecting plate 206 to lift and lower, the bag feeding lifting guide rod 203 can be accurately lifted and guided, effectively driving the lifting suction cup 221 to lift and lower stably, improving accurate guidance, and the guide rod and the bag feeding connecting plate 206 are hinged to ensure good flexibility.

[0065] In this embodiment, a bag delivery limiting structure for limiting the descent of the lifting suction cup 221 is installed on the bag delivery fixing frame 210. The bag delivery limiting structure includes a bag delivery limiting top block 222 fixedly installed on the upstream bag delivery fixing frame 210 and the downstream bag delivery fixing frame 210, and the end of the bag delivery limiting top block 222 is spherical. The height of the bag delivery limiting top block 222 is less than the height of the lifting suction cup 221. In this way, when the lifting suction cup 221 is sucking, the lifting suction cup 221 is compressed until the bag delivery limiting top block 222 contacts the packaging bag. After the suction is completed, the lifting suction cup 221 can be driven up to avoid excessive suction of the lifting suction cup 221 affecting the suction effect.

[0066] like Figure 8As shown, the supporting device includes a supporting swing arm 223 hingedly mounted on the frame 101, the free end of the supporting swing arm 223 is fixedly mounted with a support plate 224 for supporting the bottom of the packaging bag, the hinge of the supporting swing arm 223 is fixedly connected with a supporting yaw connection block 225, a supporting linear cylinder 226 is hinged on the frame 101, and the guide rod of the supporting linear cylinder 226 is hinged to the supporting yaw connection block 225; the supporting swing arm 223 is hingedly mounted in the frame 101, and the supporting swing arm 223 can yaw back and forth by 90°, and the support plate 224 swings synchronously with the supporting swing arm 223 In this way, the support plate 224 is located below the packaging bag at the downstream end, supporting the lower part of the packaging bag, and the support yaw connection block 225 is fixedly installed at the hinge of the support swing arm 223, and the guide rod is hinged to the support yaw connection block 225. In this way, when the support linear cylinder 226 extends the guide rod, the guide rod can push the support yaw connection block 225 to swing, thereby driving the support swing arm 223 to swing, and the support linear cylinder 226 is also hinged on the frame 101. When the guide rod is extended, it will also swing with the support yaw connection block 225, so that the support linear cylinder 226 can effectively move and follow the swing. The structure is simple and easy to use.

[0067] like Figure 10As shown, the first swing clamping device and the second swing clamping device have the same structure. The first swing clamping device includes a first clamping mounting seat 307 fixedly mounted on the flip main shaft 301. A first clamping link 308 is swingably mounted on the first clamping mounting seat 307. The swing center of the first clamping link 308 is perpendicular to the axis of the flip main shaft 301. The free end of the first clamping link 308 is provided with a first bag clamping claw 311 that can be opened or closed. The first clamping link 308 is driven to swing back and forth by the first bag clamping linear power device to make the first bag clamping claw 311 approach or move away from the two sides of the bag opening of the packaging bag. The flip spindle 301 is provided with a bag clamping limit structure that limits the swing range of the first clamping link 308, and the first bag clamping claw 311 is driven to open and close by the first bag clamping opening and closing power device to clamp or release the two sides of the bag opening of the packaging bag; in order to accurately open the bag opening of the packaging bag, after the bag opening hook 304 is hooked, it is necessary to tighten both sides to effectively tighten and open the bag opening, so that the bag opening can still be accurately opened when the packaging bag is flipped. Therefore, the first clamping link 308 is driven by the first bag clamping linear power device to pass against one side of the bag opening of the packaging bag, and then the first bag clamping claw 311 is driven by the first bag clamping opening and closing power device to clamp The second bag clamping claw 312 is driven to open or close by the second bag clamping linear power device; the first bag clamping linear power device includes a first bag clamping linear cylinder 310, and the second bag clamping claw 312 is driven to open or close by the second bag clamping linear power device; the first bag clamping linear power device includes a first bag clamping linear cylinder 311, and the second bag clamping claw 312 is driven to open or close by the second bag clamping linear power device; the first bag clamping linear power device includes a first bag clamping linear cylinder 312, and the second bag clamping claw 312 is driven to open or close by the second bag clamping linear power device; the second bag clamping claw 312 is driven to open or close by the second bag clamping linear power device; the second bag clamping linear cylinder 31 ... 3. The first cylinder hinge plate 314 and the second cylinder hinge plate 315 are fixedly installed on the flip main shaft 301. The first bag clamping linear cylinder 313 is hingedly installed on the first cylinder hinge plate 314. The guide rod of the first bag clamping linear cylinder 313 is hinged to the upper part of the first clamping link 308, so that the first bag clamping linear cylinder 313 drives the first clamping link 308 to swing. Similarly, the second bag clamping linear power device includes a second bag clamping linear cylinder 316. The second cylinder hinge plate 315 is hingedly installed with the second bag clamping linear cylinder 316. The guide rod of the second bag clamping linear cylinder 316 is hinged to the upper part of the second clamping link 310.

[0068] like Figure 12When the cam 318 is in the closed position, the locking lever 314 is locked and the locking lever 316 is locked, so that the cam 318 can be locked directly to the user. The first bag clamping opening and closing cylinder 321 is hingedly mounted on the middle of the first clamping link 308. After the guide rod of the first bag clamping opening and closing cylinder 321 is hingedly connected to the first upper claw 317, when the first upper claw 317 swings upward, the bag clamping synchronous link 319 also swings upward, thereby driving the bag clamping extension link 320 to swing upward, and the first one swings downward. In this way, the first upper claw 317 and the first lower claw 318 are controlled by a power device. Opening and closing, saving costs and improving practicality; the second bag clamping opening and closing power device includes a second bag clamping opening and closing cylinder 322, the second bag clamping opening and closing cylinder 322 is hingedly installed in the middle of the second clamping link 310, and the guide rod of the second bag clamping opening and closing cylinder 322 is hinged to the second upper claw 323, and a bag clamping synchronization link 319 is also provided between the second upper claw 323 and the second lower claw 324, so that the second upper claw 323 and the second lower claw 324 can also be controlled to swing, which also improves practicality.

[0069] In this embodiment, the main deflection adjustment device includes a bag opening main deflection link 305 fixedly connected to the flip spindle 301, and a bag opening support seat 326 is provided on the frame 101 for convenient rotation and installation of the flip spindle 301. A main linear power device is hinged between the bag opening main deflection link 325 and the frame 1, and the main linear power device drives the bag opening main deflection link 325 to swing; the main linear power device includes a bag opening main linear cylinder 327, and the bag opening main linear cylinder 327 is vertically It is directly hingedly installed on the frame 101, and the guide rod of the main linear cylinder 327 for bag opening is hinged to the main yaw link 325 for bag opening. In this way, the extension and retraction of the guide rod can make the main yaw link 325 for bag opening swing, and the flip main shaft 301 can rotate. The bag opening claw 304, the first clamping link 308 and the second clamping link 310 installed on the flip main shaft 301 can effectively deflect, and the main linear cylinder 327 for bag opening will also swing with the main yaw link 325 for bag opening, and the overall yaw can be improved to improve synchronization.

[0070] In this embodiment, the bag clamping limiting structure includes a bag clamping fixing rod 328 fixedly mounted on the flip main shaft 301, and a bag clamping limiting top block 329 is threadedly mounted on the bag clamping fixing rod 328 to support the outer side of the first clamping link 308; a corresponding bag clamping limiting structure is also provided on one side of the second swinging clamping device; in this way, when the first clamping link 308 and the second clamping link 310 swing outward, they will be supported by the corresponding bag clamping limiting top block 329, ensuring that the swing amplitude is too large and the bag opening of the packaging bag is not damaged, thereby ensuring the accuracy of bag opening.

[0071] In this embodiment, the contact surfaces of the first upper jaw 317 and the first lower jaw 318 are provided with mutually cooperating bag clamping protrusions 330, and similarly, the second upper jaw 323 and the second lower jaw 324 are also provided with corresponding bag clamping protrusions 330, so that the clamping degree is improved when clamping the two sides of the bag opening, thereby ensuring a firm clamping.

[0072] like Figure 11 As shown, bag opening claw connecting rods 331 are fixedly installed at both ends of the bag opening shaft 303, and the bag opening claw 304 is installed on the bag opening claw connecting rod 331, and the bag opening claw connecting rod 331 is provided with a claw adjustment mechanism that can adjust the height of the bag opening claw 304; the claw adjustment device includes two bag opening strip through holes 332 opened on the bag opening claw connecting rod 331, and a bag opening adjustment screw 334 threadedly connected to the bag opening claw 304 is provided in the bag opening strip through hole 332. By loosening or tightening the bag opening adjustment screw 334, the height position of the bag opening claw 304 can be adjusted, and the packaging bags within a certain height range delivered can be adjusted to accurately hook the bag, thereby improving the flexibility of the claw and improving the use effect.

[0073] like Figure 12As shown, the opening mechanism includes an opening lifting frame 335 that is lifted and slidably mounted on the frame 101, an opening auxiliary adsorption plate 336 is fixedly mounted on the opening lifting frame 335, an opening suction cup 337 is also mounted on the opening lifting frame 335, and an exposure hole 338 is provided on the opening auxiliary adsorption plate 336 for facilitating the exposure of the opening suction cup 337, and an opening lifting power device for driving the opening lifting frame 335 to lift is installed on the frame 101; the opening lifting power device includes an opening lifting cylinder 339, and the opening holy sword cylinder is vertically fixedly mounted on the opening fixing seat 340, and the opening fixing seat 340 is fixedly mounted on the machine On the frame 101, the opening fixing seat 340 is provided with a ventilation rod 341 that passes through the opening lifting frame 335 and is connected to the opening suction cup 337. The ventilation rod 341 is connected to the exhaust system 227 so that it is convenient for the opening suction cup 337 to suck. At the same time, a guide spring 342 is provided between the opening lifting frame 335 and the opening fixing seat 340. A spring guide rod 343 is provided inside the guide spring 342, which effectively plays a role of accurate guidance, and the exposed hole 338 can ensure that the opening suction cup 337 can accurately absorb the packaging bag during use, and the bag mouth of the packaging bag can also evenly contact the opening auxiliary adsorption plate 336, effectively supporting the packaging bag and ensuring a good bag opening effect.

[0074] The corresponding exhaust system 227 and blowing system 228 are installed on the top of the frame 101. The lifting suction cup 221 and the open suction cup 337 are provided with exhaust ports, which are connected to the exhaust system 227 through exhaust pipes and ventilation pipes to facilitate suction. At the same time, each cylinder also needs air intake and exhaust to control the extension and retraction of the guide rod. By arranging the exhaust system 227 and the blowing system 228 at the top, it is convenient to connect the ventilation pipe.

[0075] The working principle of this embodiment is as follows: first, the packaging bag is stacked on the feeding station 105, positioned by the fixed transverse baffle 116, and then the position of the movable transverse baffle 117 is adjusted, and then the position of the first sliding positioning plate 120 and the second sliding positioning plate 121 is adjusted, and the packaging bag is aligned with the first sliding positioning plate 120, and the bag supply push rod 104 is in the receiving groove, and then the bag supply linear cylinder 115 extends to push the first bag supply link 113, and the bag supply second link 114 drives the bag supply longitudinal slide 103 to slide from the feeding station 105 to the suction station 106, and the packaging bag contacts the second sliding positioning plate 121 and stops moving, and then the guide rod of the lifting drive descends, the guide rod of the bag supply linear cylinder 115 retracts, and the bag supply longitudinal slide 103 returns to the feeding station 105, and the bag supply push rod 104 rises from the receiving groove, ready for the next push,

[0076] Then the guide rod of the bag feeding lifting cylinder 205 extends, controlling the bag feeding connecting plate 206 to descend, thereby causing the lifting suction cup 221 to descend, and the lifting suction cup 221 is on the suction station 106 to suck the packaging bag below. Then the lifting suction cup 221 sucks the packaging bag and rises, and the guide rod of the bag feeding longitudinal cylinder 211 extends to push the bag feeding fixing frame 210 to move toward the bag feeding station 229, so that the lifting suction cup 221 sucks the packaging bag and also moves to the bag feeding station 229. At the same time, the supporting linear cylinder 226 extends the supporting swing arm 223 to swing, and the supporting plate 224 follows and swings to the bottom of the packaging bag, that is, the bag feeding station 229 is supported.

[0077] Then the opening lifting cylinder 339 drives the opening lifting frame 335 to rise, the opening suction cup 337 contacts the bottom of the bag opening until the opening auxiliary adsorption plate 336 contacts the bottom of the bag opening, the opening lifting frame 335 descends, the opening suction cup 337 pulls the bottom of the bag opening, and at the same time the lifting suction cup 221 also keeps sucking the upper part of the bag, and the bag opening is opened. Then the guide rod of the bag opening linear cylinder 306 extends out, and the bag opening yaw link 305 swings downward, so that the bag opening claw 304 also swings downward, and the bag opening claw 304 extends into the bag opening. Then the guide rods of the first bag clamping linear cylinder 313 and the second bag clamping linear cylinder 316 retract, and the first clamping link 308 and the second clamping link 310 approach both sides of the bag. Then the first bag clamping opening and closing cylinder 321 and the second bag clamping opening and closing cylinder 322 control the first bag clamping opening and closing cylinder 326 to open the bag. After the bag is opened, the first and second bag clamping jaws 311 and 312 clamp the two sides of the bag opening, and the opening suction cup 337 stops sucking. The first clamping link 308 and the second clamping link 310 move away from the two sides of the bag, tightening the bag opening. Then the guide rod of the main linear cylinder 327 for bag opening extends, and the main yaw link 325 for bag opening swings downward. The flip spindle 301 starts to rotate, and the first bag clamping jaw 311, the second bag clamping jaw 312 and the bag opening hook jaw 304 flip the bag opening, starting from the bag feeding station 229, so that the bag opening is facing upward and is put on the discharge port. After the bag is clamped through the next process, the first bag clamping jaw 311, the second bag clamping jaw 312 and the bag opening hook jaw 304 are reset, and the guide rod of the longitudinal cylinder 211 for bag delivery retracts, and the bag is sucked again to open the next bag.

[0078] The above-described embodiments are merely descriptions of preferred implementations of the present invention and are not intended to limit the scope of the present invention. Various modifications and alterations to the technical solutions of the present invention without departing from the spirit of the present invention shall fall within the scope of protection defined by the claims of the present invention.

Claims

1. An automatic bag feeder for a packaging machine, comprising a frame, a bag support plate disposed on the frame, a transverse limiting structure disposed on the bag support plate for laterally limiting the packaging bag, and a longitudinal positioning structure disposed on the bag support plate for longitudinally positioning the packaging bag. The transverse limiting structure and the longitudinal limiting structure form a placement area for placing the packaging bag, the placement area being provided with a feeding station and a suction station, characterized in that: The frame is provided with a longitudinal slide for supplying bags which moves longitudinally, a bag supply push rod is installed on the longitudinal slide for supplying bags which is lifted and lowered, and the bag support plate is provided with at least two longitudinal strip holes for supplying bags which extend from the feeding station to the suction station, the bag supply push rod passes through the bag support plate and is constrained in the longitudinal strip holes for supplying bags, the bag supply push rod drives the longitudinal slide for supplying bags to move back and forth between the feeding station and the suction station through the longitudinal sliding driving device for supplying bags, and the bag supply push rod is driven to rise and fall by the bag supply lifting power device so that the bag supply push rod is higher or lower than the supporting surface of the bag support plate; The bag feeding device is further installed on the frame, and the bag feeding device includes a bag feeding lifting power support seat fixedly installed on the frame, and the bag feeding lifting power support seat is installed with a bag feeding lifting power device, and a bag feeding connecting plate is provided below the bag feeding lifting power support seat, and the bag feeding connecting plate is driven to lift and lower by the bag feeding lifting power device. A bag feeding longitudinal power support seat is fixedly installed on the bag feeding connecting plate, and a bag feeding longitudinal power support device is fixedly installed on the bag feeding connecting plate The bag-opening and turning device is further provided on the frame at the bag-feeding station; the bag-opening and turning device comprises a turning spindle rotatably mounted on the frame and located above the bag-feeding station, a bag-opening mounting seat is fixedly mounted on the middle of the turning spindle, a bag-opening shaft is rotatably mounted on the bag-opening mounting seat, and bag-opening hook claws are mounted on both ends of the bag-opening shaft, and the bag-opening shaft is driven to rotate by the bag-opening deflection adjustment device, and a first swing clamping device and a second swing clamping device for tightening and clamping the two ends of the packaging bag are further provided at both ends of the turning spindle, the turning spindle is driven to rotate by the main deflection adjustment device, and the bag-opening hook claw on the frame is fixedly mounted on the bag-opening mounting seat, and the bag-opening shaft is rotatably ... driven to rotate by the bag-opening deflection adjustment device. An opening mechanism for sucking the lower part of the bag opening of the packaging bag is installed below it to open it, the bag feeding longitudinal sliding frame includes bag feeding longitudinal guide rods installed on both sides of the bag feeding longitudinal power support seat, the bag feeding longitudinal guide rods are longitudinally slidably installed on the bag feeding connecting plate, the upstream end and the downstream end of the bag feeding longitudinal guide rods are provided with bag feeding fixing frames, the bag feeding mounting frame is installed on the bag feeding fixing frame, the bag feeding longitudinal power device includes a bag feeding longitudinal cylinder, the bag feeding longitudinal cylinder is installed between the bag feeding longitudinal power support seat and one of the bag feeding fixing frames, and a bag feeding synchronization rod is installed between the bag feeding fixing frames; The bag feeding mounting frame includes a first bag feeding mounting frame and a second bag feeding mounting frame, and the first bag feeding mounting frame and the second bag feeding mounting frame are respectively mounted on two lateral sides of the upstream bag feeding fixing frame.

2. The automatic bag feeding machine of a packaging machine according to claim 1, characterized in that: The longitudinal sliding drive device for supplying bags includes a linear power device for supplying bags, a first connecting rod for supplying bags and a second connecting rod for supplying bags. One end of the first connecting rod for supplying bags is hingedly mounted on the frame, one end of the second connecting rod for supplying bags is hingedly mounted on the longitudinal sliding seat for supplying bags, the other end of the first connecting rod for supplying bags and the other end of the second connecting rod for supplying bags are hingedly connected, and the linear power device for supplying bags is hingedly mounted in the middle of the frame and the first connecting rod for supplying bags to drive the first connecting rod for supplying bags to swing.

3. The automatic bag feeding machine of a packaging machine according to claim 2, characterized in that: Two longitudinal bag supply rails are installed on the frame, and the longitudinal bag supply slide is slidably installed on the longitudinal bag supply rails, and the longitudinal bag supply slide is fixedly installed on the longitudinal bag supply slide. A first longitudinal bag supply adjustment structure is provided between the bag supply slide and the longitudinal bag supply slide, and the bag supply push rod is lifted and installed on the bag supply slide. The first longitudinal bag supply adjustment structure includes a longitudinal bag supply adjustment slot provided on the bag supply slide, and the bag supply slide and the longitudinal bag supply slide are connected by a bag supply push rod adjustment screw, and the bag supply push rod adjustment screw passes through the longitudinal bag supply adjustment slot.

4. The automatic bag feeding machine of a packaging machine according to claim 3, characterized in that: The supporting device includes a supporting swing arm hingedly mounted on a frame, a support plate for supporting the bottom of the packaging bag being fixedly mounted on the free end of the supporting swing arm, a supporting yaw connecting block being fixedly connected at the hinge of the supporting swing arm, a supporting linear cylinder being hingedly mounted on the frame, and a guide rod of the supporting linear cylinder being hingedly mounted to the supporting yaw connecting block.

5. The automatic bag feeding machine of a packaging machine according to claim 4, characterized in that: The first swinging clamping device and the second swinging clamping device have the same structure, and the first swinging clamping device includes a first clamping mounting seat fixedly mounted on the flip main shaft, and a first clamping link is swingably mounted on the first clamping mounting seat, and the swing center of the first clamping link is perpendicular to the axis of the flip main shaft; the free end of the first clamping link is provided with a first bag clamping claw that opens or closes, and the first clamping link is driven to swing back and forth by the first bag clamping linear power device to make the first bag clamping claw approach or move away from the two sides of the bag opening of the packaging bag, and a bag clamping limiting structure that limits the swing range of the first clamping link is provided on the flip main shaft, and the first bag clamping claw is driven to open and close by the first bag clamping opening and closing power device to clamp or release the two sides of the bag opening of the packaging bag.

6. The automatic bag feeding machine of a packaging machine according to claim 5, characterized in that: The first bag clamping claw includes a first upper claw and a first lower claw, and the first upper claw and the first lower claw are respectively hingedly mounted on the first clamping link, and the first upper claw is hingedly connected to the power end of the first bag clamping opening and closing power device, and the first upper claw is driven to swing by the first bag clamping opening and closing power device, and a bag clamping synchronization link is hinged between the first upper claw and the first lower claw, and when the first upper claw swings, the first lower claw is driven to swing synchronously through the bag clamping synchronization link.

7. The automatic bag feeding machine of a packaging machine according to claim 6, characterized in that: The bag clamping and limiting structure includes a bag clamping fixing rod fixedly installed on the flip main shaft, and a bag clamping and limiting top block is threadedly installed on the bag clamping fixing rod to support the outside of the first clamping connecting rod; a corresponding bag clamping and limiting structure is also provided on one side of the second swing clamping device.

8. The automatic bag feeding machine of a packaging machine according to claim 7, characterized in that: The opening mechanism includes an opening lifting frame that is installed on the frame for lifting and sliding. An opening auxiliary adsorption plate is fixedly installed on the opening lifting frame. An opening suction cup is also installed on the opening lifting frame. An exposure hole is provided on the opening auxiliary adsorption plate to facilitate the exposure of the opening suction cup. An opening lifting power device that drives the opening lifting frame to rise and fall is installed on the frame.

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