Corner cutting device for environment-friendly packaging bag manufacturing

Abstract

The invention discloses a corner cutting device for environment-friendly packaging bag manufacturing, and relates to the technical field of environment-friendly packaging bag manufacturing. The device comprises a supporting and positioning assembly; the supporting and positioning assembly comprises a base. The top of the base is rotationally matched with a pressing assembly. The pressing assembly comprises threaded rods symmetrically connected to the top of the base in a threaded mode, a lifting plate is connected between the two threaded rods in a threaded mode, first lug plates are fixedly connected to the two opposite side faces of the lifting plate, first L-shaped plates are fixedly connected to the bottoms of the first lug plates, and first sliding blocks are fixedly connected to one side faces of the first L-shaped plates. And ejector rods are symmetrically and fixedly connected to the bottom of the lifting plate. According to the environment-friendly packaging bag flattening device, environment-friendly packaging bags are flattened through movement of the flattening plate, meanwhile, the flattening plate moves downwards to be pressed on the tops of the environment-friendly packaging bags, and therefore the tightness between the environment-friendly packaging bags is guaranteed, the flatness of the sections of the environment-friendly packaging bags at the corner cutting positions is guaranteed, and the overall quality of the environment-friendly packaging bags is improved.

Description

Technical Field

[0001] The invention belongs to the technical field of environmentally friendly packaging bag making, and in particular relates to a corner cutting device for environmentally friendly packaging bag making. Background Art

[0002] Packaging bags are bags used to package various items, making it easy to transport and store goods during production and circulation. They are widely used in daily life and industrial production. Actual figures show that 80% of used plastic bags are eventually transported to garbage dumps like general garbage, and only 7% of plastics are recycled.

[0003] At present, in the production process of environmentally friendly packaging bags, it is necessary to perform corner cutting on the bottom corners of environmentally friendly packaging bags to make them more beautiful. However, the existing corner cutting device has the following shortcomings during use: the environmentally friendly packaging bags are not smoothed and pressed before corner cutting, resulting in the cross section of the corner of the environmentally friendly packaging bags being not smooth enough, thereby affecting the production quality of the environmentally friendly packaging bags. To this end, we provide a corner cutting device for environmentally friendly packaging bags to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a corner cutting device for making environmentally friendly packaging bags. The environmentally friendly packaging bags can be smoothed by moving a smoothing plate. At the same time, the smoothing plate moves downward and presses the top of the environmentally friendly packaging bags, thereby ensuring the tightness between the environmentally friendly packaging bags and the cross-sectional flatness of the environmentally friendly packaging bags at the cut corners, thereby improving the overall quality of the environmentally friendly packaging bags. The problem that the existing corner cutting device does not smooth and press the environmentally friendly packaging bags before corner cutting is solved, resulting in the cross-sectional area of ​​the cut corner of the environmentally friendly packaging bags being not flat enough, thereby affecting the production quality of the environmentally friendly packaging bags, and the problem that the corner cutting size of the corner cutting device is fixed and cannot meet the use requirements of different corner cutting sizes, thereby affecting the universality of the corner cutting device.

[0005] In order to solve the above technical problems, the present invention is achieved through the following technical solutions: The present invention is a corner cutting device for making environmentally friendly packaging bags, comprising a supporting and positioning assembly; the supporting and positioning assembly comprises a base, and the top of the base is rotatably matched with a pressing assembly; the pressing assembly comprises a threaded rod symmetrically threadedly connected to the top of the base, a lifting plate is threadedly connected between the two threaded rods, the two opposite side surfaces of the lifting plate are fixedly connected with a first ear plate, the bottom of the first ear plate is fixedly connected with a first L-shaped plate, and one side of the first L-shaped plate is fixedly connected with a first slider; the bottom of the lifting plate is symmetrically fixedly connected with a push rod, the bottom end of the push rod is fixedly connected with a first U-shaped plate, and a smoothing assembly is slidably matched between the two first sliders.

[0006] The smoothing assembly includes a vertical plate that slides together between two first sliders, one side of the vertical plate is symmetrically penetrated and fixedly connected with a circular ring, and the two opposite side surfaces of the vertical plate are hingedly connected with a rotating plate, and the rotating plate slides and fits on the circumferential side of the corresponding circular ring, and a first spring correspondingly sleeved on the circular ring is fixedly connected between the vertical plate and the rotating plate; the top of the rotating plate is slidably connected to the second slider, and a push-pull rod is hingedly connected between the adjacent second sliders and the vertical plate, and the push-pull rod and the first U-shaped plate are in one-to-one contact with each other; the bottom of the rotating plate is hingedly connected to a plurality of rotating rods, and a smoothing plate is hingedly connected between the plurality of rotating rods, and the bottom of the rotating plate is fixedly connected to an L-shaped limit plate that matches the rotating rods in a one-to-one manner.

[0007] The present invention is further configured such that the support positioning assembly also includes support columns symmetrically fixedly connected to the top of the base, a top plate is fixedly connected between each of the support columns, a positioning box is fixedly connected to the top of the base, and a first guide groove is symmetrically opened on the top of the top plate in an inclined manner.

[0008] The present invention is further configured such that the smoothing component also includes a groove formed on a side surface of the vertical plate, a right-angle notch formed on the top of the smoothing plate, a first slide groove connected to the right-angle notch formed inside the smoothing plate, a second slide groove connected to the first slide groove formed inside the smoothing plate, a notch formed at the bottom of the vertical plate, and a pressure roller rotatably connected between two opposite inner side surfaces of the notch.

[0009] The present invention is further configured such that the pressing assembly further includes second ear plates symmetrically fixedly connected to opposite side surfaces of the lifting plate, and the second ear plates are slidably fitted in a one-to-one correspondence on the peripheral side surfaces of the support column.

[0010] The present invention is further configured such that a first guide rod is fixedly connected inside the groove, the first slider is slidably mounted on the first guide rod and slidably cooperates with the groove, and a second spring mounted on the first guide rod is fixedly connected between the first slider and the groove.

[0011] The present invention is further configured such that the top sliding of the base is equipped with a cutting angle assembly, and the cutting angle assembly includes a first vertical plate symmetrically slidably connected to the top of the base, the two opposite side surfaces of the two first vertical plates are slidably connected to first mounting blocks, a cross bar is fixedly connected between the two first mounting blocks, a moving block is symmetrically slidably connected to the peripheral side surface of the cross bar, and a second guide rod that passes through the two moving blocks is fixedly connected between the two first mounting blocks; a mounting plate is fixedly connected to the top of the base, a side surface of the mounting plate passes through and is rotatably connected to a screw rod, a second U-shaped plate is fixedly connected between the two first vertical plates, and the second U-shaped plate is threadedly connected to the peripheral side surface of the screw rod.

[0012] The present invention is further configured such that a slide plate is slidably connected inside the second slide groove, an extension plate is fixedly connected to one side of the slide plate, a triangular plate slidably matched with the first slide groove is fixedly connected to one side of the extension plate, a first swing plate and a second swing plate are slidably matched with the first slide groove, and a first swing plate and a second swing plate are fixedly connected to one side of the two slide plates respectively. The first swing plate and the second swing plate are cross-slidably matched with each other, a first rectangular groove is penetrated by one side of the first swing plate, the second swing plate and the first rectangular groove are slidably matched with each other, and the first swing plate, the second swing plate and the first mounting block are hingedly matched with each other in a one-to-one correspondence.

[0013] The present invention is further configured as follows: a second vertical plate is fixedly connected to the top of the triangular plate, a second rectangular groove is opened on a side surface of the second vertical plate, a second L-shaped plate is slidably connected inside the second rectangular groove, a return spring is fixedly connected between the second L-shaped plate and the second rectangular groove, a fillet knife is fixedly connected to the bottom of the second L-shaped plate, a second mounting block is slidably connected inside the first guide groove, a cylinder is fixedly connected to the bottom of the second mounting block, and the output end of the cylinder is fixedly matched with the second L-shaped plate.

[0014] The present invention is further configured such that the top of the base is fixedly equipped with a driving assembly, and the driving assembly includes a double-headed motor fixedly connected to the top of the base, both end output ends of the double-headed motor are fixedly connected to the first rotating shaft, the end of the first rotating shaft is fixedly connected to the first bevel gear, the top of the base is symmetrically fixedly connected to the second rotating shaft, the top of the second rotating shaft is fixedly connected to the second bevel gear meshing with the first bevel gear, the peripheral side surface of the second rotating shaft is fixedly connected to the first sprocket, the peripheral side surface of the screw rod is fixedly connected to the second sprocket, and a chain meshing with adjacent first sprockets and second sprockets.

[0015] The present invention has the following beneficial effects: The first U-shaped plate is pressed against the top of the environmentally friendly packaging bag, thereby ensuring the tightness between the environmentally friendly packaging bags and further ensuring the cross-sectional flatness of the environmentally friendly packaging bags at the cutting corners.

[0016] 2. The present invention controls the movement of the rounding knife to adjust the position between the rounding knife and the corner of the environmentally friendly packaging bag, so that the corner cutting of the environmentally friendly packaging bag can be cut to the size of the corner cutting of the environmentally friendly packaging bag according to actual use needs, thereby meeting the use requirements of different corner cutting sizes of environmentally friendly packaging bags.

[0017] 3. The present invention starts a double-headed motor, and the driving ends at both ends of the double-headed motor drive the first rotating shaft to rotate, so that the first rotating shaft drives the first bevel gear to rotate, and then drives the second bevel gear meshing with it to rotate, and the second bevel gear further drives the second rotating shaft to rotate, so that the second rotating shaft drives the first sprocket to rotate, and the first sprocket drives the second sprocket meshing with it to rotate through the chain, so that the second sprocket drives the threaded rod to rotate, providing power for the rotation of the threaded rod.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0020] Figure 1 The present invention is a schematic diagram of the three-dimensional structure of a corner cutting device for making environmentally friendly packaging bags.

[0021] Figure 2 for Figure 1 Schematic diagram of the front plan structure.

[0022] Figure 3 It is a schematic diagram of the three-dimensional structure of the supporting and positioning assembly in the present invention.

[0023] Figure 4 It is a bottom-up stereoscopic structural schematic diagram of the connection between the top plate and the first guide groove in the present invention.

[0024] Figure 5 It is a schematic diagram of the three-dimensional structure of the sliding fit between the pressing component and the smoothing component in the present invention.

[0025] Figure 6 It is a schematic diagram of the three-dimensional structure of the pressing component in the present invention.

[0026] Figure 7 It is a schematic diagram of the three-dimensional structure of the smoothing component in the present invention.

[0027] Figure 8 It is a schematic diagram of the cross-sectional three-dimensional structure of the caressing plate in the present invention.

[0028] Fig. 9 It is a schematic diagram of the three-dimensional structure of the corner cutting assembly in the present invention.

[0029] Fig.10 It is a schematic diagram of the three-dimensional structure of the connection between the second vertical plate and the second L-shaped plate in the present invention.

[0030] Fig.11 It is a schematic diagram of the three-dimensional structure of the connection between the screw rod and the second U-shaped plate in the present invention.

[0031] Fig.12 It is a schematic diagram of the three-dimensional structure of the sliding fit between the smoothing plate and the corner cutting assembly in the present invention.

[0032] Fig.13 It is a schematic diagram of the three-dimensional structure of the driving component in the present invention.

[0033] In the accompanying drawings, the components represented by the reference numerals are listed as follows: 1-support positioning assembly, 101-base, 102-support column, 103-top plate, 104-positioning box, 105-first guide groove, 2-pressing assembly, 201-threaded rod, 202-lifting plate, 203-first ear plate, 204-first L-shaped plate, 205-first slider, 206-top rod, 207-first U-shaped plate, 208-second ear plate, 209-first guide rod, 210-second spring, 3-smoothing assembly, 301-vertical plate, 302-ring, 303-rotating plate, 304-first spring, 305-second slider, 306-push-pull rod, 307-rotating rod, 308-smoothing plate, 309-L-shaped limiting plate, 310-groove, 311-right-angle notch, 312-first slide groove, 313-second slide groove, 314-notch, 31 5-pressure roller, 4-angle cutting assembly, 401-first vertical plate, 402-first mounting block, 403-cross bar, 404-moving block, 405-second guide rod, 406-mounting plate, 407-screw rod, 408-second U-shaped plate, 409-slide plate, 410-extension plate, 411-triangular plate, 412-first swing plate, 413-second swing plate, 414-first rectangular groove, 415-second vertical plate, 416-second rectangular groove, 417-second L-shaped plate, 418-reset spring, 419-rounded corner knife, 420-second mounting block, 421-cylinder, 5-driving assembly, 501-double-headed motor, 502-first rotating shaft, 503-first bevel gear, 504-second rotating shaft, 505-second bevel gear, 506-first sprocket, 507-second sprocket. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] For example, see Figure 1-13 The present invention provides the following technical solutions: a corner cutting device for making environmentally friendly packaging bags, comprising a supporting positioning component 1; the supporting positioning component 1 comprises a base 101, the supporting positioning component 1 further comprises supporting columns 102 symmetrically fixedly connected to the top of the base 101, a top plate 103 is fixedly connected between each supporting column 102, a positioning box 104 is fixedly connected to the top of the base 101 (one side of the positioning box 104 is open and unobstructed, and a through notch is provided on the other side opposite to the positioning box 104, in order to better flatten the environmentally friendly packaging bag by pressing the component 2), and a first guide groove 105 is symmetrically provided on the top of the top plate 103 and arranged obliquely The top of the base 101 is rotatably engaged with a pressing component 2; the pressing component 2 includes a threaded rod 201 symmetrically threadedly connected to the top of the base 101, a lifting plate 202 is threadedly connected between the two threaded rods 201, and the two opposite side surfaces of the lifting plate 202 are fixedly connected with a first ear plate 203, the bottom of the first ear plate 203 is fixedly connected with a first L-shaped plate 204, and one side of the first L-shaped plate 204 is fixedly connected with a first slider 205; the bottom of the lifting plate 202 is symmetrically fixedly connected with a push rod 206, the bottom end of the push rod 206 is fixedly connected with a first U-shaped plate 207, and a smoothing component 3 is slidably engaged between the two first sliders 205.

[0036] The smoothing component 3 includes a vertical plate 301 that is slidably fitted between the two first sliders 205. A circular ring 302 is symmetrically passed through and fixedly connected to one side of the vertical plate 301. The two opposite sides of the vertical plate 301 are both hingedly connected to a rotating plate 303. The rotating plate 303 is slidably fitted on the circumferential side of the corresponding circular ring 302. A first spring 304 correspondingly sleeved on the circular ring 302 is fixedly connected between the vertical plate 301 and the rotating plate 303. A second slider 305 is slidably connected to the top of the rotating plate 303. The adjacent second sliders 305 and the vertical plate 301 are hingedly connected. A push-pull rod 306 is connected, and the push-pull rod 306 and the first U-shaped plate 207 are in one-to-one contact with each other; the bottom of the rotating plate 303 is hingedly connected to a plurality of rotating rods 307, and a smoothing plate 308 is hingedly connected between the plurality of rotating rods 307 (the bottom of the smoothing plate 308 is coated with a Teflon coating. The use of the Teflon coating reduces the friction between the smoothing plate 308 and the environmentally friendly packaging bag, so that the smoothing plate 308 can smooth the environmentally friendly packaging bag more smoothly, avoiding the process of the smoothing plate 308 pressing down the environmentally friendly packaging bag, and at the same time, the smoothing movement action is performed outward, and The bottom of the rotating plate 303 is fixedly connected with an L-shaped limit plate 309 corresponding to the rotating rod 307. The smoothing component 3 also includes a groove 310 formed on one side of the vertical plate 301. The top of the smoothing plate 308 is provided with a right-angle notch 311. The inside of the smoothing plate 308 is provided with a first slide groove 312 connected to the right-angle notch 311. The inside of the smoothing plate 308 is provided with a second slide groove 313 connected to the first slide groove 312. The bottom of the vertical plate 301 is provided with a notch 314. The notch 311 is provided with a first notch 312. A pressing roller 315 is rotatably connected between the two opposite inner side surfaces. The pressing assembly 2 further comprises second ear plates 208 symmetrically fixedly connected to the two opposite side surfaces of the lifting plate 202. The second ear plates 208 are slidably matched on the peripheral side surface of the support column 102 in a one-to-one correspondence. The first guide rod 209 is fixedly connected inside the groove 310. The first slider 205 is slidably sleeved on the first guide rod 209 and slidably matched with the groove 310. A second spring 210 sleeved on the first guide rod 209 is fixedly connected between the first slider 205 and the groove 310.

[0037] The operation process of this embodiment is as follows: first, place the whole stack of environmentally friendly packaging bags to be rounded inside the positioning box 104, so that one side of the packaging bag just fits against the side of the positioning box 104 with a notch; then, control the threaded rod 201 to rotate, so that the threaded rod 201 drives the lifting plate 202 to move downward; further, the lifting plate 202 drives the first L-shaped plate 204 and the first slider 205 to move downward, and simultaneously drives the top rod 206 and the first U-shaped plate 207 to move downward, so that the first L-shaped plate 204 drives the first slider 205 and the smoothing component 3 to move downward, and then drives the pressure roller 315 in the smoothing component 3 to move downward until it just touches the top of the whole stack of environmentally friendly packaging bags, and at the same time, the smoothing plate 308 also just fits against the top of the whole stack of environmentally friendly packaging bags (at this time, the first U-shaped plate 207 just fits against the outer wall of the push-pull rod 306).

[0038] The threaded rod 201 is continuously controlled to drive the lifting plate 202 to move downward, so that the lifting plate 202 continues to drive the first L-shaped plate 204 and the first slider 205 to move downward, and the first slider 205 moves downward along the groove 310, so that the first slider 205 squeezes the second spring 210, and synchronously drives the first U-shaped plate 207 to continue to move downward, and the first U-shaped plate 207 contacts the push-pull rod 306, driving the push-pull rod 306 to rotate in the direction close to the vertical plate 301, and then through the rotation of the push-pull rod 306, the rotating plate 303 is driven to the direction close to the smoothing plate 308 The rotation of the rotating plate 303 drives the rotating rod 307 to rotate in the direction away from the vertical plate 301, so that the smoothing plate 308 moves in the direction away from the vertical plate 301. Through the movement of the smoothing plate 308, the smoothing plate 308 smoothes the environmentally friendly packaging bag from the middle to the outside. At the same time, when the smoothing component 3 moves downward as a whole, the smoothing plate 308 is pressed against the top of the environmentally friendly packaging bag, thereby ensuring the tightness between the environmentally friendly packaging bags, and then ensuring the cross-sectional flatness of the environmentally friendly packaging bags at the cutting corners, thereby improving the overall quality of the environmentally friendly packaging bags (such as Figure 3 , 5 , 6, and 7).

[0039] For example 2, please refer to Figure 1-13The second embodiment of the present invention is improved on the basis of the first embodiment as follows: the top of the base 101 is slidably provided with a cutting corner assembly 4, the cutting corner assembly 4 includes a first vertical plate 401 symmetrically slidably connected to the top of the base 101, the two first vertical plates 401 are slidably connected to the first mounting blocks 402 on the two opposite sides, a cross bar 403 is fixedly connected between the two first mounting blocks 402, a moving block 404 is symmetrically slidably connected to the surrounding side of the cross bar 403, and a second guide rod 405 that passes through the two moving blocks 404 is fixedly connected between the two first mounting blocks 402; a mounting plate 406 is fixedly connected to the top of the base 101, a screw rod 407 is rotatably connected to one side of the mounting plate 406, and a second U-shaped plate 408 is fixedly connected between the two first vertical plates 401. The second U-shaped plate 408 is threadedly connected to the peripheral side of the screw rod 407; the second slide groove 313 is slidably connected with a slide plate 409 inside, and an extension plate 410 is fixedly connected to one side of the slide plate 409, and a triangular plate 411 that slides with the first slide groove 312 is fixedly connected to one side of the extension plate 410, and a triangular plate 411 that slides with the first slide groove 312 is fixedly connected to one side of the two slide plates 409. The first swing plate 412 and the second swing plate 413 are cross-slidably matched. A first rectangular groove 414 is provided on one side of the first swing plate 412, and the second swing plate 413 slides with the first rectangular groove 414. The first swing plate 412, the second swing plate 413 and the first mounting block 402 are hingedly matched one by one.

[0040] A second vertical plate 415 is fixedly connected to the top of the triangular plate 411, a second rectangular groove 416 is opened on one side of the second vertical plate 415, a second L-shaped plate 417 is slidably connected inside the second rectangular groove 416, a return spring 418 is fixedly connected between the second L-shaped plate 417 and the second rectangular groove 416, a fillet knife 419 is fixedly connected to the bottom of the second L-shaped plate 417, a second mounting block 420 is slidably connected inside the first guide groove 105, a cylinder 421 is fixedly connected to the bottom of the second mounting block 420, and the output end of the cylinder 421 is fixedly matched with the second L-shaped plate 417.

[0041] The operation process of this embodiment is as follows: in the process of the smoothing component 3 moving downward to complete the compression and smoothing of the environmentally friendly packaging bag, synchronously, the first swing plate 412 and the second swing plate 413 are driven downward by the smoothing plate 308, and the first swing plate 412 and the second swing plate 413 move in the direction away from the vertical plate 301 along with the smoothing plate 308. At the same time, the angle between the triangular plates 411 also increases with the movement of the two smoothing plates 308. After the threaded rod 201 stops rotating, the smoothing plate 308 stops moving. Then, the control screw rod 407 is controlled to rotate clockwise or counterclockwise to drive the second U-shaped plate 408 to move forward or backward, and further drive the first vertical plate 401 to move forward or backward. The first vertical plate 401 moves forward, so that the first vertical plate 401 drives the cross bar 403 to move forward, and then drives the moving block 404 to move forward, thereby driving the first swing plate 412 and the second swing plate 413 to move forward along the second slide groove 313, and further The first vertical plate 401 moves backward, so that the first vertical plate 401 drives the cross bar 403 to move backward, and then drives the moving block 404 to move backward, thereby driving the first swing plate 412 and the second swing plate 413 to move backward along the second slide groove 313, and further drives the slide plate 409, the extension plate 410, the triangular plate 411 and the rounding knife 419 to move backward, thereby realizing the adjustment of the position between the rounding knife 419 and the corner of the environmentally friendly packaging bag, so that the cutting angle of the environmentally friendly packaging bag can be cut according to the actual use requirements, conveniently and quickly to realize the size of the cutting angle of the environmentally friendly packaging bag, thereby meeting the use requirements of different sizes of cutting angles of environmentally friendly packaging bags, and finally starting the cylinder 421, the output end of the cylinder 421 drives the second L-shaped plate 417 to move downward, thereby driving the rounding knife 419 to move downward, so that the rounding knife 419 completes the corner cutting operation of the environmentally friendly packaging bag.

[0042] For example 3, please refer to Figure 1-13 , this embodiment three makes the following improvements on the basis of embodiment one: the top of the base 101 is fixedly matched with a driving component 5, and the driving component 5 includes a double-headed motor 501 fixedly connected to the top of the base 101, and the output ends of the double-headed motor 501 are fixedly connected with a first rotating shaft 502 at both ends, and the end of the first rotating shaft 502 is fixedly connected with a first bevel gear 503, and the top of the base 101 is symmetrically fixedly connected with a second rotating shaft 504, and the top of the second rotating shaft 504 is fixedly connected with a second bevel gear 505 meshing with the first bevel gear 503, the peripheral side surface of the second rotating shaft 504 is fixedly connected with a first sprocket 506, and the peripheral side surface of the screw rod 407 is fixedly connected with a second sprocket 507, and a chain is meshed between adjacent first sprockets 506 and second sprockets 507.

[0043] The operation process of this embodiment is: start the double-headed motor 501, and the driving ends at both ends of the double-headed motor 501 drive the first rotating shaft 502 to rotate, so that the first rotating shaft 502 drives the first bevel gear 503 to rotate, and then drives the second bevel gear 505 meshing with it to rotate, and the second bevel gear 505 further drives the second rotating shaft 504 to rotate, so that the second rotating shaft 504 drives the first sprocket 506 to rotate, and the first sprocket 506 drives the second sprocket 507 meshing with it to rotate through the chain, so that the second sprocket 507 drives the threaded rod 201 to rotate, providing power for the rotation of the threaded rod 201.

[0044] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0045] The preferred embodiments of the present invention disclosed above are only used to help illustrate the present invention. The preferred embodiments do not describe all the details in detail, nor do they limit the invention to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can understand and use the present invention well. The present invention is limited only by the claims and their full scope and equivalents.

Claims

1. A corner cutting device for making environmentally friendly packaging bags, comprising a supporting and positioning assembly (1); characterized in that: The supporting and positioning assembly (1) comprises a base (101), and the top of the base (101) is rotatably matched with a pressing assembly (2); The pressing assembly (2) comprises a threaded rod (201) symmetrically threadedly connected to the top of the base (101); a lifting plate (202) is threadedly connected between the two threaded rods (201); two opposite side surfaces of the lifting plate (202) are fixedly connected to first ear plates (203); the bottom of the first ear plate (203) is fixedly connected to a first L-shaped plate (204); and one side of the first L-shaped plate (204) is fixedly connected to a first sliding block (205); The bottom of the lifting plate (202) is symmetrically fixedly connected to a top rod (206), the bottom end of the top rod (206) is fixedly connected to a first U-shaped plate (207), and a smoothing component (3) is slidably fitted between the two first sliding blocks (205); The smoothing component (3) comprises a vertical plate (301) slidably fitted between two first sliding blocks (205); a circular ring (302) is symmetrically penetrated and fixedly connected to one side surface of the vertical plate (301); two opposite side surfaces of the vertical plate (301) are hingedly connected to rotating plates (303); the rotating plates (303) are slidably fitted on the circumferential side surfaces of the corresponding circular rings (302); and a first spring (304) correspondingly sleeved on the circular rings (302) is fixedly connected between the vertical plate (301) and the rotating plate (303); The top of the rotating plate (303) is slidably connected to a second sliding block (305), a push-pull rod (306) is hingedly connected between the adjacent second sliding block (305) and the vertical plate (301), and the push-pull rod (306) and the first U-shaped plate (207) are in one-to-one contact engagement; The bottom of the rotating plate (303) is hingedly connected to a plurality of rotating rods (307), a smoothing plate (308) is hingedly connected between the plurality of rotating rods (307), and the bottom of the rotating plate (303) is fixedly connected to an L-shaped limiting plate (309) that matches the rotating rods (307) in a one-to-one correspondence.

2. The corner cutting device for making environmentally friendly packaging bags according to claim 1, characterized in that: The support positioning assembly (1) further comprises support columns (102) symmetrically fixedly connected to the top of the base (101), a top plate (103) being fixedly connected between each of the support columns (102), a positioning box (104) being fixedly connected to the top of the base (101), and a first guide groove (105) being symmetrically provided on the top of the top plate (103) and arranged in an inclined manner.

3. The corner cutting device for making environmentally friendly packaging bags according to claim 2, characterized in that: The smoothing component (3) further comprises a groove (310) formed on a side surface of the vertical plate (301); a right-angled notch (311) is formed on the top of the smoothing plate (308); a first sliding groove (312) connected to the right-angled notch (311) is formed inside the smoothing plate (308); a second sliding groove (313) connected to the first sliding groove (312) is formed through the inside of the smoothing plate (308); a notch (314) is formed at the bottom of the vertical plate (301); a pressure roller (315) is rotatably connected between two inner side surfaces opposite to the notch (314).

4. The corner cutting device for making environmentally friendly packaging bags according to claim 3, characterized in that: The pressing assembly (2) further comprises second ear plates (208) symmetrically fixedly connected to opposite side surfaces of the lifting plate (202), wherein the second ear plates (208) are slidably fitted on the peripheral side surfaces of the support column (102) in a one-to-one correspondence.

5. The corner cutting device for making environmentally friendly packaging bags according to claim 4, characterized in that: A first guide rod (209) is fixedly connected inside the groove (310); the first slider (205) is slidably sleeved on the first guide rod (209) and slidably cooperates with the groove (310); and a second spring (210) sleeved on the first guide rod (209) is fixedly connected between the first slider (205) and the groove (310).

6. The corner cutting device for making environmentally friendly packaging bags according to claim 5, characterized in that: The top of the base (101) is slidably provided with a corner cutting assembly (4), the corner cutting assembly (4) comprising a first vertical plate (401) symmetrically slidably connected to the top of the base (101), first mounting blocks (402) being slidably connected to two opposite side surfaces of the two first vertical plates (401), a cross bar (403) being fixedly connected between the two first mounting blocks (402), a moving block (404) being symmetrically slidably connected to the surrounding side surfaces of the cross bar (403), and a second guide rod (405) penetrating the two moving blocks (404) being fixedly connected between the two first mounting blocks (402); A mounting plate (406) is fixedly connected to the top of the base (101), a screw rod (407) is rotatably connected to one side of the mounting plate (406), a second U-shaped plate (408) is fixedly connected between the two first vertical plates (401), and the second U-shaped plate (408) is threadedly connected to the peripheral side of the screw rod (407).

7. The corner cutting device for making environmentally friendly packaging bags according to claim 6, characterized in that: A slide plate (409) is slidably connected inside the second slide groove (313), an extension plate (410) is fixedly connected to one side of the slide plate (409), a triangular plate (411) slidably matched with the first slide groove (312) is fixedly connected to one side of the extension plate (410), a first swing plate (412) and a second swing plate (413) are respectively fixedly connected to one side of the two slide plates (409), the first swing plate (412) and the second swing plate (413) are cross-slidably matched, a first rectangular groove (414) is provided on one side of the first swing plate (412), the second swing plate (413) is slidably matched with the first rectangular groove (414), and the first swing plate (412), the second swing plate (413) and the first mounting block (402) are hingedly matched one by one.

8. The corner cutting device for making environmentally friendly packaging bags according to claim 7, characterized in that: The top of the triangular plate (411) is fixedly connected to a second vertical plate (415); a second rectangular groove (416) is provided on one side of the second vertical plate (415); a second L-shaped plate (417) is slidably connected inside the second rectangular groove (416); a return spring (418) is fixedly connected between the second L-shaped plate (417) and the second rectangular groove (416); a fillet knife (419) is fixedly connected to the bottom of the second L-shaped plate (417); a second mounting block (420) is slidably connected inside the first guide groove (105); a cylinder (421) is fixedly connected to the bottom of the second mounting block (420); an output end of the cylinder (421) is fixedly matched with the second L-shaped plate (417).

9. The corner cutting device for making environmentally friendly packaging bags according to claim 8, characterized in that: The top of the base (101) is fixedly fitted with a driving assembly (5), the driving assembly (5) comprising a double-headed motor (501) fixedly connected to the top of the base (101), and both output ends of the double-headed motor (501) are fixedly connected to a first rotating shaft (502); The end of the first rotating shaft (502) is fixedly connected to a first bevel gear (503); the top of the base (101) is symmetrically fixedly connected to a second rotating shaft (504); the top of the second rotating shaft (504) is fixedly connected to a second bevel gear (505) meshing with the first bevel gear (503); the peripheral side surface of the second rotating shaft (504) is fixedly connected to a first sprocket (506); the peripheral side surface of the lead screw (407) is fixedly connected to a second sprocket (507); and a chain meshing with adjacent first sprockets (506) and second sprockets (507) is provided.

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